CN220700455U - Curtain cloth trimming device and wirecord cloth processing system - Google Patents

Abstract

The utility model provides a curtain cloth trimming device and a wirecord cloth processing system. The curtain cloth trimming device comprises: a mounting assembly; the positioning assembly is arranged on the mounting assembly, at least one part of the positioning assembly can move relative to the mounting assembly, and the positioning assembly is provided with a positioning channel for the curtain cloth to pass through; the cutting assembly is arranged on the mounting assembly, is positioned at the downstream of the positioning assembly in the movement direction of the curtain cloth and cuts the curtain cloth passing through the positioning channel, and the cutting assembly can cut the curtain cloth from two sides of the curtain cloth in the thickness direction. The utility model solves the problem of poor trimming effect of the giant tire wirecord fabric in the prior art.

Description

Cord trimming device and steel cord processing system

Technical field

The utility model relates to the field of tire production equipment, in particular to a cord trimming device and a steel cord processing system.

Background technique

In the manufacturing process of engineering tires and giant radial tires used in mining engineering machinery, the steel cord belt carcass is one of the important components. The production of engineering tire and giant tire steel cord carcass requires the calendered steel cord to be cut according to the required angle and width, and then spliced and rolled for molding and use.

The edges of the usual calendered steel cords do not exactly meet the needs of the joints, resulting in problems such as excessive cord spacing at the joints or insufficient joint strength. Usually, the rolled cord needs to be trimmed after the cutting process to meet the joint requirements.

The traditional technical solution for repairing rubber edges by cold trimming with a disc knife: At present, the thickness of the traditional all-steel and semi-steel carcass cords is usually between 1mm and 4mm. The cords are usually trimmed by cold trimming with a disc knife. Extra glue edge. Torque motors are used to drive disc knives on both sides of the cord to trim the edges close to the cord and trim the excess rubber edges. This method is only suitable for traditional all-steel and semi-steel carcass cord trimming. The thickness is usually between 1mm and 4mm. The spacing of thin steel wires is small. The thickness of steel wire cords for engineering tires and giant tires is usually between 3mm and 13mm. The spacing between thick steel wires is large, and the amount of trimming glue remaining when using a torque motor-driven disc cutter will be unstable. The amount of trimming glue remaining cannot meet the requirement of half the steel wire spacing according to different steel wire spacings.

Therefore, there is a problem in the prior art that the trimming effect of the steel cord for giant tires is poor.

Utility Model Content

The main purpose of this utility model is to provide a cord trimming device and a steel cord processing system to solve the problem of poor trimming effect of giant tire steel cord in the prior art.

In order to achieve the above object, according to one aspect of the present invention, a curtain trimming device is provided, which includes: a mounting component; a positioning component, the positioning component is arranged on the mounting component, at least a part of the positioning component can move relative to the mounting component, and The positioning assembly has a positioning channel for the curtain to pass; the cutting assembly is arranged on the installation assembly. In the movement direction of the curtain, the cutting assembly is located downstream of the positioning assembly and cuts the curtain passing through the positioning channel, and the cutting assembly can be The cord is cut on both sides in the thickness direction of the cord.

Furthermore, the positioning assembly includes at least two roller groups that are arranged opposite to each other, each roller group has a plurality of rollers, and a positioning channel is provided between the two roller groups that are arranged opposite to each other.

Further, the axial direction of the rollers is the same as the width direction of the cord; and/or the number of rollers in each roller group is the same.

Furthermore, the circumferential side walls of at least three rollers of all the rollers of the two oppositely arranged roller groups have a first positioning protrusion or a second positioning protrusion, and a positioning gap is provided between the first positioning protrusion and the second positioning protrusion in the width direction of the curtain.

Further, the positioning assembly also includes a first driving assembly. The first driving assembly is connected with the roller having the first positioning protrusion or the second positioning protrusion and drives the roller to move in the axial direction to adjust the first positioning protrusion and the second positioning protrusion. Position the distance between bumps.

Further, the roller groups are divided into two groups, and each roller group has three rollers. Among the three rollers of the roller group, the rollers on both sides have first positioning protrusions respectively, and the roller in the middle has a third positioning protrusion. Two positioning protrusions, the positioning assembly also includes a first driving assembly, the first driving assembly is drivingly connected to the roller with the second positioning protrusion to adjust the distance between the first positioning protrusion and the second positioning protrusion.

Further, the positioning assembly includes a second driving assembly, and the second driving assembly is drivingly connected to at least one of the two opposing roller groups, so that the two opposing roller groups move closer to or farther away from each other along the edge. direction movement.

Further, the positioning assembly includes a positioning plate, which is L-shaped and includes a first section and a second section connected in sequence. The first section is connected to the installation assembly, and all the roller groups are arranged on the second section.

Further, the cutting assembly includes a first cutting part and a second cutting part arranged oppositely. The first cutting part and the second cutting part engage with each other and cut the curtain fabric from both sides of the curtain fabric respectively.

Furthermore, the mounting assembly includes: a mounting plate having a slide rail; a connecting plate movably disposed on the mounting plate and capable of moving along the slide rail, and the positioning assembly and the cutting assembly are respectively disposed on the connecting plate; and a third driving assembly, which is drivingly connected to the connecting plate.

Further, the cord trimming device further includes: a glue edge lead-out component, the tape edge lead-out component is located downstream of the cutting component, and at least a part of the tape edge lead-out component is connected to the connecting plate.

According to another aspect of the utility model, a steel cord fabric processing system is provided, comprising a frame, and the above-mentioned cord fabric trimming devices are respectively arranged on both sides of the frame.

Applying the technical solution of the present invention, the curtain trimming device in this application includes a mounting component, a positioning component and a cutting component. The positioning component is provided on the installation component, at least part of the positioning component can move relative to the installation component, and the positioning component has a positioning channel for the curtain to pass; the cutting component is provided on the installation component, and in the direction of movement of the curtain, the cutting component is located on the positioning component downstream and cuts the cord passing through the positioning channel, and the cutting assembly can cut the cord from both sides in the thickness direction of the cord.

When using the cord trimming device in this application, since the cord trimming device has a mounting assembly, the cord trimming device can be installed at the position where the cord passes through the mounting assembly, thereby cutting the sides of the cord. Moreover, since the curtain trimming device also has a positioning component, when the curtain passes through the positioning channel of the positioning component, the positioning component can adjust the position of the curtain, thereby changing the relative position of the curtain and the cutting component, and thereby adjusting the cutting component to the curtain The cutting position ensures that the cord trimming device in this application can flexibly cut the side edges of the cord. At the same time, since the cutting assembly in the present application can cut the cord from both sides in the thickness direction of the cord, the cutting thickness of the cord trimming device in the present application can meet the thickness of the giant tire steel cord. Therefore, the cord trimming device in the present application effectively solves the problem of poor trimming effect of giant tire steel cord in the prior art.

Moreover, since the above-mentioned cord trimming devices are respectively provided on both sides of the frame of the steel cord processing system in this application, the steel cord processing system in this application can trim both sides of the giant tire steel cord at the same time.

Description of drawings

The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

Figure 1 shows a schematic structural diagram of a curtain trimming device according to a specific embodiment of the present invention;

FIG2 shows a right side view of the cord trimming device in FIG1 ;

Figure 3 shows a top view of the curtain trimming device in Figure 1;

Figure 4 shows a schematic diagram of the positional relationship between the frame and the cord trimming device in the steel cord processing system according to a specific embodiment of the present application;

Figure 5 shows a schematic structural diagram of a steel cord processing system according to a specific embodiment of the present application;

Figure 6 shows a schematic diagram of curtain trimming according to a specific embodiment of the present application.

Among them, the above-mentioned drawings include the following reference signs:

10. Installation assembly; 11. Installation plate; 12. Slide rail; 13. Connecting plate; 14. Third driving assembly; 20. Positioning assembly; 21. Roller group; 211. Roller; 212. First positioning protrusion; 213. Second positioning protrusion; 22. First driving assembly; 23. Positioning plate; 24. Second driving assembly; 30. Cutting assembly; 31. First cutting section; 32. Second cutting section; 40. Rubber edge guide assembly; 50. Frame; 60. Curtain trimming device; 70. Curtain guide roller mechanism; 80. Curtain tensioning assembly; 90. Clamping material pulling device; 100. Cutting host device; 200. Guide device; 300. Pad take-up device; 400. Steel curtain material roll; 500. Cutting conveyor belt device; 600. Curtain; 610. Steel wire; 620. Rubber; 630. Rubber edge.

Detailed ways

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings commonly understood by those of ordinary skill in the technical field to which this application belongs.

In the present invention, unless otherwise specified, the directional words used such as "up, down, top, bottom" usually refer to the direction shown in the drawings, or refer to the vertical position of the component itself. , vertically or in the direction of gravity; similarly, for ease of understanding and description, "inside and outside" refers to the inside and outside relative to the outline of each component itself, but the above directional terms are not used to limit the present utility model.

In order to solve the problem of poor trimming effect of steel cord fabric for giant tires in the prior art, the present application provides a cord trimming device and a steel cord processing system.

Furthermore, as shown in FIG. 4 and FIG. 5 , the steel cord fabric processing system in the present application includes a frame 50 , and the following cord fabric trimming devices 60 are respectively disposed on both sides of the frame 50 .

As shown in FIGS. 1 to 6 , the curtain trimming device in this application includes a mounting component 10 , a positioning component 20 and a cutting component 30 . The positioning component 20 is provided on the installation component 10. At least a part of the positioning component 20 can move relative to the installation component 10, and the positioning component 20 has a positioning channel for the curtain to pass; the cutting component 30 is provided on the installation component 10, in the direction of movement of the curtain. On the screen, the cutting assembly 30 is located downstream of the positioning assembly 20 and cuts the curtain passing through the positioning channel, and the cutting assembly 30 can cut the curtain from both sides in the thickness direction of the curtain.

When the cord trimming device in the present application is used, since the cord trimming device has an installation assembly 10, the cord trimming device can be installed at the position where the cord 600 passes through the installation assembly 10, so as to achieve cutting of the side of the cord 600. In addition, since the cord trimming device also has a positioning assembly 20, when the cord passes through the positioning channel of the positioning assembly 20, the positioning assembly 20 can adjust the position of the cord, thereby changing the relative position of the cord and the cutting assembly 30, and then adjusting the cutting position of the cord by the cutting assembly 30, ensuring that the cord trimming device in the present application can flexibly cut the side of the cord. At the same time, since the cutting assembly 30 in the present application can cut the cord from both sides of the thickness direction of the cord, the cutting thickness of the cord trimming device in the present application can meet the thickness of the giant tire steel cord. Therefore, the cord trimming device in the present application effectively solves the problem of poor trimming effect of giant tire steel cord in the prior art.

In a specific embodiment of the present application, the cord trimming device is installed on the frame 50 of the steel cord processing system through the mounting assembly 10 .

Moreover, in the embodiment shown in Figure 4, since the above-mentioned cord trimming devices 60 are respectively provided on both sides of the frame 50 of the steel cord processing system in this application, the steel cord processing system in this application can simultaneously Trim both sides of the giant tire steel cord at the same time.

Specifically, in the embodiment shown in FIGS. 1 to 3 , the positioning assembly 20 includes at least two sets of roller groups 21 arranged opposite each other. Each roller group 21 has a plurality of rollers 211 . The two roller groups 21 are arranged opposite each other. There are positioning channels between groups 21. In this application, since during the process of cutting the cord, the conveying device for transporting the cord does not convey the cord in the horizontal direction, but in the vertical or approximately vertical direction, so the cord is transported through The cord trimming device moves in a vertical or approximately vertical direction, so by arranging at least two sets of opposite roller groups 21, the two sides of the cord movement direction can be limited, thereby ensuring that the cutting assembly 30 is in the opposite direction. The stability of the fabric during cutting. Since the roller group 21 has a plurality of rollers 211, that is to say, the rollers 211 can rotate relative to the curtain when the curtain passes through the positioning channel, thereby effectively reducing the resistance of the curtain when passing through the positioning channel.

Moreover, the two roller groups 21 arranged opposite to each other in the present application can also support the curtain fabric.

Optionally, the axial direction of the roller 211 is the same as the width direction of the curtain. This arrangement can further ensure the positioning effect of the roller group on the curtain fabric to ensure that the curtain fabric can move in the preset direction. At the same time, such an arrangement can further effectively reduce the resistance between the stick and the cord, thus ensuring the stable operation of the cord trimming device.

Optionally, in the embodiment shown in FIGS. 1 to 3 , the number of rollers 211 in each roller group 21 is the same. Through this arrangement, when the curtain passes through the positioning channel, the stability of the curtain can be effectively ensured and the force on the curtain can be more uniform.

Specifically, the circumferential side walls of at least three rollers 211 of all the rollers 211 of the two roller groups 21 arranged opposite to each other have the first positioning protrusion 212 or the second positioning protrusion 213, and there is a positioning gap between the first positioning protrusion 212 and the second positioning protrusion 213 in the width direction of the curtain. In addition, the positioning assembly 20 also includes a first driving assembly 22, which is connected to the roller 211 having the first positioning protrusion 212 or the second positioning protrusion 213 and drives the roller 211 to move axially to adjust the distance between the first positioning protrusion 212 and the second positioning protrusion 213. In this embodiment, the total number of the first positioning protrusion 212 and the second positioning protrusion 213 is at least three, so that the linear positioning of the curtain can be achieved through all the first positioning protrusions 212 and the second positioning protrusions 213, so that the curtain can be ensured to move in a preset direction. At the same time, since there is a positioning gap between the first positioning protrusion 212 and the second positioning protrusion 213, the steel wire 610 in the curtain can be clamped by the first positioning protrusion 212 and the second positioning protrusion 213, and the steel wire 610 clamped by the first positioning protrusion 212 and the second positioning protrusion 213 can be changed at the same time, so that the relative position between the positioning assembly 20 and the curtain can be adjusted, thereby adjusting the relative position of the cutting assembly 30 and the curtain, and then changing the cutting position of the cutting assembly 30 on the curtain, so that the curtain trimming device in the present application can trim the curtain to different degrees.

That is to say, in this application, in the direction in which the curtain passes, the first positioning protrusion 212 and the second positioning protrusion 213 are respectively at different positions in the length direction of the curtain, and the connection lines of all the first positioning protrusions 212 Parallel to the running direction of the curtain, all connecting lines of the second positioning protrusions 213 are parallel to the running direction of the curtain. By driving the first positioning protrusion 212 or the second positioning protrusion 213 by the first driving component 22, the positioning gap between the first positioning protrusion 212 and the second positioning protrusion 213 can be changed, thereby ensuring the first positioning. The protrusion 212 and the second positioning protrusion 213 can clamp the steel wire in the curtain to achieve position adjustment or limitation of the curtain. In this application, by selecting the steel wire clamped by the first positioning protrusion 212 and the second positioning protrusion 213, the position adjustment of the curtain can be achieved. After the first positioning protrusion 212 and the second positioning protrusion 213 clamp the selected steel wire, the curtain can be limited.

In a specific embodiment of the present application, as shown in FIGS. 1 to 3 , the roller group 21 is divided into two groups. Each roller group 21 has three rollers 211 , and one group of the roller group 21 has three rollers. The rollers 211 on both sides of 211 have first positioning protrusions 212 respectively, and the roller 211 in the middle has a second positioning protrusion 213. The positioning assembly 20 also includes a first driving assembly 22, and the first driving assembly 22 has a second positioning protrusion 212. The roller 211 of the positioning protrusion 213 is drivingly connected to adjust the distance between the first positioning protrusion 212 and the second positioning protrusion 213 . In this embodiment, two first positioning protrusions 212 and one second positioning protrusion 213 among the three rollers 211 form staggered "V"-shaped protrusions, which are used to embed two single steel wires near the edge of the curtain. side, preferably the second steel wire at the edge of the curtain. And by driving the second positioning protrusion 213, the curtain is slowly clamped to achieve the positioning and guiding function.

Specifically, as shown in FIGS. 1 to 3 , the positioning assembly 20 includes a second driving assembly 24 , and the second driving assembly 24 is drivingly connected to at least one of the two oppositely arranged roller groups 21 , so as to The two opposite sets of rollers 21 are moved in a direction toward or away from each other. Through this arrangement, the positioning assembly 20 can position curtains of different thicknesses. That is to say, when the thickness of the cord to be trimmed is different, the roller group 21 can be driven by the second driving assembly 24 to ensure that the positioning channel of the positioning assembly 20 can adapt to the thickness of the cord to be trimmed. That is to say, in this application, the second driving assembly 24 is provided to drive the roller group 21 to adjust the size of the positioning channel, especially the size of the positioning channel corresponding to the thickness direction of the curtain to be trimmed.

Optionally, as shown in Figure 3, the positioning assembly 20 includes a positioning plate 23. The positioning plate 23 is L-shaped and includes a first section and a second section connected in sequence. The first section is connected to the installation assembly 10, and all rollers The barrel group 21 is arranged on the second section. That is to say, in this application, the positioning assembly 20 is installed on the mounting assembly 10 through the positioning plate 23, and the first section of the positioning plate 23 is used to connect with the mounting assembly 10, and the second section of the positioning plate 23 is used to set the roller. The purpose of setting the positioning plate 23 in an L shape is to reduce the interference between the roller set 21 and the installation assembly 10 during use, thereby ensuring the stable operation of the cord trimming device.

Specifically, the cutting assembly 30 includes a first cutting part 31 and a second cutting part 32 arranged oppositely. The first cutting part 31 and the second cutting part 32 mesh with each other and cut the curtain from both sides of the curtain respectively. Of course, in this application, the structural forms of the first cutting part 31 and the second cutting part 32 can be adjusted to at least ensure that the cutting assembly 30 can cut the thickness direction of the curtain through the first cutting part 31 and the second cutting part 32 respectively. Just cut both sides at the same time. Preferably, the first cutting part 31 and the second cutting part 32 respectively have circular cutter discs.

In a specific embodiment of the present application, the mounting assembly 10 includes a mounting plate 11 and a connecting plate 13 . The mounting plate 11 has a slide rail 12; the connecting plate 13 is movably arranged on the mounting plate 11 and can move along the sliding rail 12, the positioning component 20 and the cutting component 30 are respectively arranged on the connecting plate 13; the third driving component 14, the third driving component The component 14 is drivingly connected to the connecting plate 13 . Through this arrangement, the connecting plate 13 can drive the positioning component 20 and the cutting component 30 to move together, thereby changing the relative positions of the positioning component 20 and the cutting component 30 and the curtain, thus changing the trimming position of the curtain, thereby achieving the adjustment of the amount of trimming glue. Adjust to ensure that the remaining amount of trimming glue meets the requirements of controlling the amount of remaining glue at half the steel wire spacing for different steel wire densities. Furthermore, it should be noted that in this application, the cutting part of the curtain fabric by the cutting assembly 30 is a part of the part where the curtain fabric passes through the positioning channel.

Optionally, the cord trimming device further includes a glue edge lead-out assembly 40 , which is located downstream of the cutting assembly 30 , and at least a portion of the glue edge lead-out assembly 40 is connected to the connecting plate 13 . Through this arrangement, the cut edge material of the cord can be separated from the cord using the glue edge lead-out assembly 40 .

Optionally, the rubber edge export assembly 40 includes: at least one export roller, which is rotatably connected to the connecting plate 13; a conveyor belt, which is located downstream of the export roller and can transport the cut edge; a collecting hopper, which collects the edge. The hopper is located below the conveyor belt and can receive the rubber edge 630 transported by the conveyor belt. Of course, in this application, the conveyor belt may not be provided, so that the material edges are directly collected through the collecting hopper after the lead-out roller leads out.

The third driving component 14 includes: a screw; a nut seat, which is fixedly connected to one end of the support plate, and the nut seat is rotationally connected to the screw and can move along the screw; a driving part, which is connected to one end of the screw connected and capable of driving the screw to rotate. In this application, the forms of the first driving assembly 22 and the second driving assembly 24 can be flexibly adjusted, as long as it is ensured that the first driving assembly 22 can drive the roller 211 and the second driving assembly 24 can drive the roller set 21 Just drive. That is to say, in this application, the first driving component 22 and the second driving component 24 may be a driving motor, a driving cylinder, a driving structure that drives a screw nut, or other structures.

In the present application, the steel cord processing system also includes a guide device 200, which is used to guide the steel cord fabric roll 400, and peel the padding cloth off and roll it onto the reel through the padding cloth winding device 300 and the padding cloth winding device 300. The peeled cord is actively transported to the cord trimming device position through the cord guide pull-out roller mechanism 70, and then the cord is tensioned and transported to the storage arc position by the cord tensioning assembly 80. At the same time, the trimmed rubber edge 630 is guided out by the rubber edge guide assembly 40 for recycling. The trimmed thick cord is drawn by the clamp pulling device 90 to a fixed length, and is cut to a fixed length by the cutting host device 100. The cut cord strips are transported to the splicing joint device by the cutting conveyor belt device 500 for splicing and winding.

FIG6 is a schematic diagram of trimming the cord, wherein the cord 600 is composed of a plurality of parallel steel wires 610 and rubber 620 which are calendered by a calender. Assuming that the spacing between the steel wires is a, in order to ensure that the spacing between the steel wires after the two cords are joined is as close as possible, the relative positions of the positioning assembly 20 and the cutting assembly 30 are adjusted to achieve a trimming thickness of the excess rubber of 1/2 times a.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: when using the cord trimming device in this application, since the cord trimming device has the mounting assembly 10, the cord trimming device can By installing the mounting assembly 10 to the position where the curtain passes, the side edges of the curtain can be cut. Moreover, since the curtain trimming device also has a positioning assembly 20, when the curtain passes through the positioning channel of the positioning assembly 20, the positioning assembly 20 can adjust the position of the curtain, thereby changing the relative position of the curtain and the cutting assembly 30, and thereby adjusting The cutting position of the cord fabric by the cutting assembly 30 ensures that the cord trimming device in this application can flexibly cut the side edges of the cord fabric. At the same time, since the cutting assembly 30 in the present application can cut the cord from both sides in the thickness direction of the cord, the cutting thickness of the cord trimming device in the present application can meet the thickness of the giant tire steel cord. Therefore, the cord trimming device in the present application effectively solves the problem of poor trimming effect of giant tire steel cord in the prior art.

Obviously, the above-described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of the present utility model.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, work, means, components and/or combinations thereof.

It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. A cord trimming device, characterized in that it includes: Installing assembly (10); Positioning component (20), the positioning component (20) is provided on the mounting component (10), at least a part of the positioning component (20) can move relative to the mounting component (10), and the positioning component (20) It has a positioning channel for the curtain to pass; A cutting assembly (30), wherein the cutting assembly (30) is arranged on the mounting assembly (10), and in the movement direction of the curtain, the cutting assembly (30) is located downstream of the positioning assembly (20) and cuts the curtain passing through the positioning channel, and the cutting assembly (30) can cut the curtain from both sides in the thickness direction of the curtain. 2. The cord trimming device according to claim 1, characterized in that the positioning assembly (20) includes at least two sets of roller sets (21) arranged oppositely, and each set of the roller sets (21) has a There are a plurality of rollers (211), and the positioning channel is provided between two opposite roller groups (21). 3. The curtain trimming device according to claim 2, characterized in that, The axial direction of the roller (211) is the same as the width direction of the cord; and/or The number of rollers (211) in each roller group (21) is the same. 4. The cord trimming device according to claim 2, characterized in that at least three of the rollers (211) of all the rollers (211) of the two oppositely arranged roller groups (21) ) has a first positioning protrusion (212) or a second positioning protrusion (213) on the circumferential side wall, and the first positioning protrusion (212) and the second positioning protrusion (213) are in contact with each other in the width direction of the curtain. There is a positioning gap between the protrusions (213). 5. The curtain trimming device according to claim 4, characterized in that the positioning component (20) further includes a first driving component (22), and the first driving component (22) is connected with the first driving component. The roller (211) of the positioning protrusion (212) or the second positioning protrusion (213) is connected and drives the roller (211) to move in the axial direction to adjust the first positioning protrusion (212) and the second positioning protrusion (213). 6. The cord trimming device according to claim 4, characterized in that the roller group (21) is composed of two groups, and each roller group (21) has three rollers (211). Among the three rollers (211) of the roller group (21), the rollers (211) located on both sides have the first positioning protrusions (212) respectively, and the roller located in the middle (211) has the second positioning protrusion (213), the positioning assembly (20) also includes a first driving assembly (22), the first driving assembly (22) and the second positioning protrusion The roller (211) of (213) is drivingly connected to adjust the distance between the first positioning protrusion (212) and the second positioning protrusion (213). 7. The curtain trimming device according to claim 2, characterized in that the positioning component (20) includes a second driving component (24), and the second driving component (24) is connected with two sets of oppositely arranged groups. At least one of the roller groups (21) is driven and connected, so that two opposite groups of the roller groups (21) move in a direction toward or away from each other. 8. The curtain trimming device according to claim 2 is characterized in that the positioning assembly (20) also includes a positioning plate (23), the positioning plate (23) is L-shaped and includes a first section and a second section connected in sequence, the first section is connected to the mounting assembly (10), and all the roller groups (21) are arranged on the second section. 9. The curtain trimming device according to any one of claims 1 to 8, characterized in that the cutting assembly (30) includes a first cutting part (31) and a second cutting part (32) arranged oppositely. , the first cutting part (31) and the second cutting part (32) mesh with each other and cut the curtain fabric from both sides of the curtain fabric respectively. 10. The cord trimming device according to any one of claims 1 to 8, characterized in that the mounting assembly (10) comprises: Mounting plate (11), the mounting plate (11) has a slide rail (12); Connecting plate (13), the connecting plate (13) is movably arranged on the mounting plate (11) and can move along the slide rail (12), the positioning assembly (20) and the cutting assembly (30 ) are respectively arranged on the connecting plate (13); A third driving component (14). The third driving component (14) is drivingly connected to the connecting plate (13). 11. The cord trimming device according to claim 10, characterized in that the cord trimming device further includes: Glue edge lead-out component (40), the glue edge lead-out component (40) is located downstream of the cutting component (30), and at least a part of the glue edge lead-out component (40) is connected to the connecting plate (13) . 12. A steel cord processing system, characterized in that it includes a frame (50), and the cord trimming device () according to any one of claims 1 to 11 is provided on both sides of the frame (50). 60).