CN104305922B - Joint paper device - Google Patents

Abstract

A paper saver, used to control the length of a paper strip of a paper roll, is characterized in that the paper saver includes a first paper press roller, a second paper press roller, and a paper press roller connected to the second paper press The first vertical transmission part of the roller, the second vertical transmission part engaged with the first vertical transmission part, the screw rod connected to the second vertical transmission part, the gravity block installed on the screw rod, the sleeve set on the gravity block, And the limit assembly installed on the upper end of the sleeve, a one-way bearing is arranged between the gravity block and the screw rod, the first paper pressing roller and the second paper pressing roller are used to clamp the paper strip; when the paper strip is drawn out, the first paper pressing roller The second platen roller is rotated by the friction force of the paper strip, thereby driving the screw to rotate through the first vertical transmission part and the second vertical transmission part to push the gravity block to move upward until it is stopped by the limit assembly to control The length of the strip to be pulled out. The paper saver of the present invention realizes the mechanical control of the length of the paper strip to be pulled out, and the paper saver is low in cost, practical and environment-friendly.

Description

paper saver

technical field

The invention relates to a paper saver, in particular to a paper saver which can prevent roll paper from being torn off by too long and is environmentally friendly.

Background technique

In daily life, during the use of paper rolls in public places, it is often difficult for users to control the length of the paper during the process of tearing. The paper is easy to be too fast and too long, that is, to pull out a long section at once, instead of slowly controlling the length to tear the paper, resulting in unnecessary waste; in addition, children will tear off very Throwing away long paper strips will also cause a lot of waste, which is not in line with the social trend of environmental protection and conservation. However, controlling the length of the paper strip through an electronic sensor has high cost, is easily damaged, and is difficult to popularize and use.

Contents of the invention

Therefore, the object of the present invention is to provide a low-cost, practical and environment-friendly paper saver.

A paper saver is used to control the pulling-out length of a paper strip of a paper roll, the paper saver includes a first paper pressing roller, a second paper pressing roller, a first paper pressing roller connected to the second paper pressing roller The vertical transmission part, the second vertical transmission part engaged with the first vertical transmission part, the screw rod connected with the second vertical transmission part, the gravity block installed on the screw rod, the sleeve set on the gravity block, and the The limit assembly at the upper end of the sleeve, a one-way bearing is provided between the gravity block and the screw rod, and the first paper pressing roller and the second paper pressing roller are used to clamp the paper strip; the paper strip is led out At this time, the second platen roller is rotated by the friction force of the paper strip, thereby driving the screw to rotate through the first vertical transmission part and the second vertical transmission part, so as to push the gravity block to move upward until it is subjected to the limit Stop after the blocking of the component to control the length of the paper strip.

Further, the limiting assembly includes a plug body, a locking member and an adjusting member, the locking member has a top end and an outer abutting portion, the adjusting member is threadedly combined with the plug body, and the adjusting member abuts against the The top end of the locking member, the top of the locking member elastically abuts against the inner wall of the sleeve.

Further, the abutting portion is correspondingly snapped into the guide groove of the sleeve.

Further, the inner wall of the sleeve is provided with several vertical guide grooves, and the outer wall of the gravity block is provided with several vertical accommodation grooves, and the accommodation grooves correspond to the guide grooves one by one; the paper-saving The device also includes several balls, each ball part is embedded in the accommodating groove of the gravity block, and the other part is embedded in the guide groove of the gravity block.

Further, the inner wall of the sleeve is provided with several vertical guide grooves, and the outer wall of the gravity block is provided with several ribs correspondingly inserted into the guide grooves of the sleeve.

Further, the first vertical transmission member is a worm, and the second vertical transmission member is a worm wheel.

Further, the first vertical transmission member and the second vertical transmission member are vertical bevel gears meshing with each other.

Further, a one-way mechanism is installed on the second paper pressing roller, so as to prevent the paper strip from exiting reversely from between the first paper pressing roller and the second paper pressing roller.

Further, the surface of the screw is provided with a helical groove, and the inner wall of the one-way bearing is protruded with an engaging portion to be correspondingly embedded in the helical groove of the screw.

Further, the sleeve is arranged in a hollow rectangular shape, and the gravity block is arranged in a rectangular shape corresponding to the hollow part.

The paper saver of the present invention realizes the mechanical control of the length of the paper strip to be pulled out through the connection and cooperation of the screw rod, the one-way bearing and the gravity block. The paper saver is low in cost, practical and environment-friendly.

Description of drawings

Fig. 1 is a structural schematic diagram of the paper saver of the present invention installed in a carton.

FIG. 2 is a partially enlarged view of the paper saver in FIG. 1 .

detailed description

In order to make the technical solution of the present invention more clearly expressed, the present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 to FIG. 2 , it is a paper saver according to a preferred embodiment of the present invention, which is used to install in a paper box 90 to control the length of the paper strip 92 torn out from the paper roll 91 . The paper saver includes a first paper pressing roller 10, a second paper pressing roller 20, a first vertical transmission member 31 connected to the second paper pressing roller 20, and a second vertical transmission member engaged with the first vertical transmission member 31. 32, the screw rod 40 connected to the second vertical transmission member 32, the gravity block 50 installed on the screw rod 40, the sleeve 60 covering the gravity block 50, and the limit assembly 70 installed on the upper end of the sleeve 60 . A one-way bearing 80 is provided between the gravity block 50 and the screw rod 40 . When the paper strip 92 is drawn out, the second platen roller 20 is rotated by the friction force of the paper strip 92, thereby driving the screw 40 to rotate through the first vertical transmission member 31 and the second vertical transmission member 32, so as to Push the gravity block 50 to move upward until it stops after being blocked by the limiting assembly 70, thereby preventing the paper strip 92 from being drawn out in turn.

The paper box 90 is a box for loading paper rolls 91, which can be made of plastic, metal and other materials, and is usually fixed on the wall by a fixing piece for the user to pull. The paper roll 91 is pivotally connected to the paper box 90 . Specifically, the paper box 90 is provided with a horizontal shaft, and the center of the paper roll 91 is sleeved on the shaft to achieve the effect of pivoting. The paper strip 92 is drawn out from the paper roll 91 , passes between the first paper pressing roller 10 and the second paper pressing roller 20 , and is drawn out from the outlet of the paper box 90 . More preferably, the paper strip 92 is provided with horizontal tooth-shaped grooves at intervals, so that the user can easily break it when tearing it.

The surfaces of the first paper pressing roller 10 and the second paper pressing roller 20 are rough to increase the frictional force on the paper strip 92 . Specifically, the surface of the second platen roller 20 is provided with soft thorns, so as to ensure the traction of the paper strip 92 during rotation. In this embodiment, in order to prevent the paper strip 92 from reversely exiting between the first paper pressing roller 10 and the second paper pressing roller 20, the second paper pressing roller 20 is equipped with a one-way mechanism 25, such as a ratchet or a one-way bearing, etc. ; Understandably, the one-way mechanism 25 can be installed on the first platen roller 10 .

The axis of the second platen roller 20 is connected to a knob device (not shown in the figure), and the knob device protrudes from the outer wall of the paper box 90 to facilitate the user to manually rotate the second paper platen roller 20 to output the paper strip 92 , so that the paper strip 92 can be manually unscrewed when the paper roll 91 is initially installed into the paper cassette 90 .

The first vertical transmission member 31 is coaxially fixed with the second platen roller 20; the second vertical transmission member 32 is coaxially fixed with the screw rod 40; the first vertical transmission member 31 and the second vertical transmission member 32 The axes are perpendicular to each other. Wherein, the first vertical transmission member 31 and the second vertical transmission member 32 may be a vertical transmission combination in which worm gears, vertical bevel gears, etc. are engaged with each other, so as to convert the rotation of the first vertical transmission member 31 around the horizontal axis into the second vertical transmission member. The rotation of the vertical transmission member 32 around the vertical axis. In this embodiment, the first vertical transmission member 31 is a worm, and the second vertical transmission member 32 is a worm wheel.

The lower end of the screw rod 40 is fixed to the second vertical transmission member 32 . The surface of the screw 40 is provided with a helical groove 41 . An engaging portion 81 protrudes from an inner wall of the inner ring of the one-way bearing 80 for correspondingly inserting into the helical groove 41 of the screw rod 40 . Specifically, the engaging portion 81 is a plurality of bumps or a section of thread. The gravity block 50 is fixed to the outer ring of the one-way bearing 80 .

The sleeve 60 can be in the shape of a hollow circle, a hollow rectangle, etc., and the shape of the gravity block 50 corresponds to the hollow part of the sleeve 60. For example, when the sleeve 60 is a hollow rectangle, the gravity block 50 is in the shape of the hollow Some parts are arranged in a corresponding rectangular shape, so that the gravity block 50 only rotates up and down relative to the sleeve 60 but does not rotate relative to the sleeve 60; in this embodiment, the sleeve 60 is arranged in a cylindrical shape. The inner wall of the sleeve 60 is provided with several vertical guide grooves 61 , and the guide grooves 61 extend along the axial direction of the sleeve 60 and are evenly distributed. The outer wall of the gravity block 50 is provided with several vertical accommodating grooves 51 , and the accommodating grooves 51 are in one-to-one correspondence with the guiding grooves 61 of the sleeve 60 . In this embodiment, the number of the guide grooves 61 is four, and they are arranged oppositely; the number of the accommodation grooves 51 is four, and each accommodation groove 51 is opposite to a guide groove 61 . The paper saver also includes several balls 55 , each ball 55 is partially embedded in the accommodating groove 51 of the gravity block 50 , and the other portion is embedded in the guiding groove 61 . Multiple or only one ball 55 can be embedded in each receiving groove 51 and the corresponding guiding groove 61 . The gravity block 50 is provided with a blocking portion corresponding to the bottom end of the accommodating groove 51 to prevent the ball 55 from falling off from the bottom end of the accommodating groove 51; in other embodiments, the gravity block 50 corresponds to the accommodating The top of the groove 51 can also be provided with a blocking portion to prevent the ball 55 from falling out from the top of the accommodating groove 51 .

In this embodiment, the gravity block 50 slides up and down along the guide groove 61 of the sleeve 60 by setting the accommodation groove 51 on the surface to cooperate with the ball 55; in other embodiments, the gravity block 50 can be set on the surface The ribs are correspondingly inserted into the guide grooves 61 of the sleeve 60 to achieve the effect of sliding up and down. A lubricating material can be coated in the guide groove 61 to increase the lubricity between the gravity block 50 and the sleeve 60 .

The limiting component 70 includes a plug body 71 , a locking component 72 and an adjusting component 73 . The plug body 71 , the engaging member 72 and the regulating member 73 are all provided with a central hole for the screw rod 40 to selectively pass through. The engaging member 72 is connected to the plug body 71 . The engaging member 72 has a top end 720 and an outer abutting portion 725 . The engaging member 72 is elastic. The abutting portion 725 is correspondingly snapped into the guide groove 61 of the sleeve 60 to ensure that the plug body 71 can move up and down relative to the sleeve 60 to adjust its position. The adjusting member 73 is threadedly combined with the plug body 71 and can move up and down relative to the plug body 71 in a screw manner. The adjusting member 73 abuts against the top 720 of the engaging member 72 . When the adjusting member 73 moves downward relative to the plug body 71, the adjusting member 73 presses the top 720 of the engaging member 72 downward, so that the abutting portion 725 of the engaging member 72 expands outward to elastically abut against or compress the The inner wall of the sleeve 60 makes the limiting component 70 fixed relative to the sleeve 60 . It can be understood that the abutting portion 725 does not need to be snapped into the guide groove 61, but guide rails are provided on the side surface of the plug body 71 to correspondingly snap into the guide groove 61 of the sleeve 60, so as to ensure that the plug body 71 can be relatively sleeved. The barrel 60 moves up and down to adjust the position.

In this embodiment, the middle part of the plug body 71 is provided with internal threads, and the side surface of the adjustment member 73 is provided with external threads to combine with the plug body 71 . In other embodiments, the top outer surface of the plug body 71 can be provided with external threads, and the middle inner surface of the adjustment member 73 can be combined with internal threads, wherein the top of the locking member 72 is sleeved on the periphery of the plug body 71 and connected to the The bottom of the adjusting member 73 touches the top.

When the paper strip 92 is pulled outward, the paper strip 92 drives the first paper pressing roller 10 and the second paper pressing roller 20 to rotate, and the second paper pressing roller 20 passes through the first vertical transmission member 31 and the second vertical transmission member 32 Drive the screw rod 40 to rotate, thereby driving the inner ring of the one-way bearing 80 to rotate; since the inner ring is in an engaged state when it rotates along the circumferential direction during installation, the inner ring drives the outer ring of the one-way bearing 80 and the gravity block 50 to rotate , so the screw 40 pushes the one-way bearing 80 and the gravity block 50 to move upwards until the gravity block 50 abuts against the limit assembly 70, which in turn restricts the rotation of the second platen roller 20, and the paper strip 92 can no longer Stretch out, then paper strip 92 is torn off the length of setting.

When the paper strip 92 is torn off, the gravity block 50 is driven by its own gravity, and slides downward along the guide groove 61 of the sleeve 60, and the spiral groove 41 of the inner circle of the one-way bearing 80 and the spiral groove 41 of the screw rod 40 when upward In the opposite direction, the spiral descends. At this time, the connection relationship between the inner ring and the outer ring is a pivotal connection, so that the screw rod 40 will not be driven to rotate, and the problem of driving the second platen roller 20 to reverse in reverse is avoided. The one-way mechanism 25 installed on the second platen roller 20 also effectively ensures the reverse rotation of the second platen roller 20 at this time. In addition, since the limit assembly 70 can move and be fixed relative to the position of the sleeve 60 , the moving stroke of the gravity block 50 can be adjusted, thereby adjusting the protruding length of the paper strip 92 . Of course, in other embodiments, if the position-adjusting function of the limit assembly 70 is not required, it can also be changed to a simple cover.

The paper saver of the present invention realizes the mechanical control of the length of the paper strip to be pulled out through the connection and cooperation of the screw rod, the one-way bearing and the gravity block. The paper saver is low in cost, practical and environment-friendly.

The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A paper saver, used to control the pull-out length of a paper strip of a paper roll, characterized in that: the paper saver includes a first paper pressing roller, a second paper pressing roller, connecting the second The first vertical transmission part of the platen roller, the second vertical transmission part meshed with the first vertical transmission part, the screw rod connected with the second vertical transmission part, the gravity block installed on the screw rod, and the gravity block covered on the gravity block A sleeve, and a limit assembly installed on the upper end of the sleeve, a one-way bearing is provided between the gravity block and the screw rod, and the first paper pressing roller and the second paper pressing roller are used to clamp the paper strip; When the paper strip is drawn out, the second platen roller is rotated by the frictional force of the paper strip, thereby driving the screw to rotate through the first vertical transmission member and the second vertical transmission member, so as to push the gravity block to move upward, Stop until it is blocked by the limit assembly, so as to control the pull-out length of the paper strip. 2. The paper saver according to claim 1, characterized in that: the limit assembly includes a plug body, a locking member and an adjustment member, the locking member has a top end and an outer abutting portion, the adjustment The adjusting part is threadedly combined with the plug body, the adjusting part abuts against the top of the engaging part, and the abutting part of the engaging part elastically abuts against the inner wall of the sleeve. 3. The paper saver according to claim 2, wherein the abutting portion is correspondingly snapped into the guide groove of the sleeve. 4. The paper saver according to claim 1, characterized in that: the inner wall of the sleeve is provided with a number of vertical guide grooves, and the outer wall of the gravity block is provided with a number of vertical accommodating grooves, the accommodating The placement grooves correspond to the guide grooves one by one; the paper saver also includes a number of balls, each ball is partially embedded in the accommodating groove of the gravity block, and other parts are embedded in the guide groove of the gravity block. 5. The paper saver according to claim 1, characterized in that: the inner wall of the sleeve is provided with a number of vertical guide grooves, and the outer wall of the gravity block is provided with a number of ribs corresponding to the guides embedded in the sleeve groove. 6. The paper saver according to claim 1, wherein the first vertical transmission member is a worm, and the second vertical transmission member is a worm wheel. 7. The paper saver according to claim 1, wherein the first vertical transmission member and the second vertical transmission member are vertical bevel gears meshing with each other. 8. The paper saver according to claim 1, wherein a one-way mechanism is installed on the second pressing roller to prevent the paper strip from passing between the first pressing roller and the second pressing roller. Reverse exit. 9. The paper saver according to claim 1, characterized in that: the surface of the screw is provided with a spiral groove, and the inner wall of the one-way bearing is protruded with an engaging part to correspond to the spiral groove embedded in the screw. groove. 10. The paper saver according to claim 1, wherein the sleeve is arranged in a hollow rectangular shape, and the gravity block is arranged in a rectangular shape corresponding to the hollow part.