CN104553064A - A handle preheating device for rice bag welding handle bag making - Google Patents

Abstract

The present invention discloses a handle preheating device for making rice bag handles by welding the handles, comprising a frame and a heating device, wherein a heating channel for the handle to slide through is arranged on the frame, and the heating device is used to heat the handle passing through the heating channel. In order to solve the problems of indentation and loose bonding when the handle is welded to the composite film and to improve the bag making speed, the handle is preheated before spot welding (a suitable preheating temperature is selected according to handles of different materials), and the handle is bonded to the composite film after it has reached a certain temperature, so that it can be bonded to the composite film without absorbing a lot of heat, and the spot welding time will be effectively shortened, and the heat sealing temperature and heat sealing pressure can be adjusted within a reasonable range, and no indentation will appear when the composite film is bonded to the handle, which not only ensures the beauty of the bag, but also reduces the spot welding time and improves the bag making efficiency.

Description

A handle preheating device for rice bag welding handle bag making

technical field

The invention relates to a handle preheating device for rice bag welding handle bag making.

Background technique

When the rice bag is made by welding the handle, the handle should be sent between the upper and lower composite films in advance and fixed by spot welding to facilitate the next step of bag forming. Due to the different materials of each handle, the heat sealability of the handle is significantly different. Since the handle itself has a certain thickness, it needs to absorb a large amount of heat to be bonded to the composite film when it is heat-sealed with the composite film. The film is scalded; if the spot welding temperature is too low, the bond between the handle and the composite film will not be firm. In order to improve the bonding firmness, it is often necessary to increase the heat sealing time or heat sealing pressure, so that it is easy to have indentations on the composite film. If the temperature is adjusted to a suitable value and the spot welding time is increased to ensure the adhesion of the handle to the composite film, the bag making speed will not be increased, and the indentation will also exist, and the bag will always be unattractive.

Contents of the invention

In order to solve the above problems, the present invention provides a handle preheating device for rice bag welding handle bag making.

The technical solution adopted by the present invention to solve its technical problems is:

A handle preheating device for rice bag welding handle bag making, including a frame and a heating device, the frame is provided with a heating channel for the handle to slide through, and the heating device is used to heat the handle passing through the heating channel. heating.

A through hole is arranged at the bottom of the heating channel, and the transverse dimension of the through hole is smaller than the transverse dimension of the handle.

The heating device includes an upper heating device and a lower heating device, the upper heating device is located above the through hole for heating the upper part of the handle, and the lower heating device is located below the through hole for heating the lower part of the handle.

The upper heating device includes a first preheating plate, a guide rod, a spring and a first heating tube. One end of the guide rod is slidably installed on the frame, and the other end is fixedly connected to the first preheating plate. A heating pipe is arranged inside the first preheating plate, and one end of the spring is against the frame, and the other end is against the first preheating plate.

The lower heating device includes a second preheating plate and a second heating pipe, the second preheating plate is installed on the frame and located in the through hole, and the second heating pipe is arranged in the second preheating plate.

The through hole can simultaneously cover multiple handles in the longitudinal direction.

The first preheating plate can cover multiple handles at the same time.

The second preheating plate can cover multiple handles at the same time.

The beneficial effects of the present invention are: in order to solve the problem of indentation and weak bonding when the handle and the composite film are welded and to increase the bag-making speed, the handle is selected to be preheated before the handle is spot-welded (according to different materials) Select the appropriate preheating temperature for the handle), let the handle have a certain temperature before bonding with the composite film, it can be bonded with the composite film without absorbing a lot of heat, the spot welding time will be effectively shortened, heat sealing The temperature and heat sealing pressure can be adjusted within a reasonable range, and there will be no indentation when the composite film is bonded to the handle, which not only ensures the beautiful appearance of the bag, but also reduces the spot welding time and improves the bag making efficiency.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is a schematic diagram one of the present invention;

Fig. 2 is schematic diagram two of the present invention;

Fig. 3 is the schematic diagram of handle spot welding on the composite film;

Fig. 4 is a finished schematic diagram of the handle completely welded on the bag body.

Detailed ways

Referring to Figures 1 to 4, the present invention is a handle preheating device for rice bag welding handle bag making, including a frame 1 and a heating device, and the frame 1 is provided with a heating channel 2 for the handle 0 to slide through. The heating device is used to heat the handle 0 passing through the heating channel 2 . In order to solve the problems of indentation and weak bonding when the handlebar and the composite film 10 are welded and to increase the speed of bag making, it is chosen to preheat the handlebar before spot welding the handlebar (according to the handlebar of different materials) Select a suitable preheating temperature), let the handle 0 have a certain temperature before bonding with the composite film 10, it can be bonded with the composite film 10 without absorbing a lot of heat, the spot welding time will be effectively shortened, heat The sealing temperature and heat sealing pressure can be adjusted within a reasonable range. There will be no indentation when the composite film 10 is bonded to the handle 0, which not only ensures the beautiful appearance of the bag, but also reduces the spot welding time and improves the bag making process. efficiency.

As shown in the figure, in order to improve the preheating effect, a through hole 3 is provided at the bottom of the heating channel 2, so that the lower heating device can directly contact the handle 0. The lateral dimension of the through hole 3 is smaller than that of the handle 0. The through hole 3 Multiple handles O can be covered simultaneously in the longitudinal direction, so that the heating device can heat multiple handles O at the same time.

As shown in the figure, the heating device can specifically adopt the following embodiments, including an upper heating device and a lower heating device, the upper heating device is located above the through hole 3, and is used to heat the upper part of the handle 0, and the lower heating device is located below the through hole 3, It is used to heat the lower part of the handle 0; the upper heating device includes a first preheating plate 41, a guide rod 42, a spring 43 and a first heating tube 44, one end of the guide rod 42 is slidably installed on the frame 1, and the other end is connected to the The first preheating plate 41 is fixedly connected, the first heating pipe 44 is arranged inside the first preheating plate 41, one end of the spring 43 is against the frame 1, and the other end is against the first preheating plate 41. A preheating plate 41 is located above the through hole 3, and the first preheating plate 41 can cover multiple handles 0 at the same time; the lower heating device includes a second preheating plate 51 and a second heating tube 52, and the second preheating plate 51 is installed On the frame 1 and located in the through hole 3 , the second heating pipe 52 is arranged in the second preheating plate 51 , and the second preheating plate 51 can cover multiple handles 0 at the same time. The specific action of the heating device with the above structure is as follows. The handle 0 moves forward in a stepping manner under the action of the driving device (the driving device adopts the existing mature technology, which will not be described in detail here). When passing through the position of the through hole 3, Under the action of the spring 43, the first preheating plate 41 acts on the handle 0, and the handle 0 is pressed against the second preheating plate 51, through the first preheating plate 41 and the second preheating plate 51 in step The opened gap heats the handle O. Since the first preheating plate 41 and the second preheating plate 51 can cover multiple handles O, each handle O will be heated by the first preheating plate 41 and the second preheating plate 51 through the through hole 3. The second preheating plate 51 is heated multiple times, and then its temperature is raised to the set requirement before spot welding.

The specific spot welding process is as follows. After the handle 0 is preheated, it is sent between the two layers of composite film 10, and then the middle position of the handle 0 is instantly spot-welded with the composite film 10 by the spot welding device. Both sides of the handle 0 are There are two positions that are spot-welded with the composite film 10, and the relative position between the spot-welded handle and the composite film 10 is fixed, and then the spot-welded handle 0 and the composite film 10 are sent to the subsequent process Do a full weld.

The above-mentioned embodiments are only preferred versions of the present invention, and the present invention also has other embodiments. Those skilled in the art can also make equivalent modifications or replacements without departing from the spirit of the present invention, and these equivalent modifications or replacements are all included within the scope set by the claims of the present application.

Claims (8)

1. a handle preheating device for rice bag weldering handle bag, is characterized in that comprising frame and heater, frame is provided with a heat tunnel slipped over for handle, and described heater is used for heating the handle through heat tunnel.

2. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 1, it is characterized in that being provided with a through hole bottom described heat tunnel, through hole lateral dimension is less than the lateral dimension of handle.

3. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 2, it is characterized in that described heater comprises heater and lower heater, described upper heater is positioned at above through hole, for heating handle top, described lower heater is positioned at below through hole, for heating handle bottom.

4. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 3, it is characterized in that described upper heater comprises the first preheating table, guide rod, spring and the first heating tube, described guide rod is slidably arranged in frame, the other end is fixedly connected with the first preheating table, it is inner that described first heating tube is arranged on this first preheating table, described spring one end is resisted against in frame, and the other end is resisted against on the first preheating table.

5. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 3, it is characterized in that described lower heater comprises the second preheating table and the second heating tube, described second preheating table to be arranged in frame and to be positioned at through hole, and described second heating tube is arranged in the second preheating table.

6. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 2, is characterized in that described through hole is in longitudinally can cover multiple handle simultaneously.

7. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 4, is characterized in that described first preheating table can cover multiple handle simultaneously.

8. the handle preheating device of a kind of meter of bag weldering handle bag as claimed in claim 5, is characterized in that described second preheating table can cover multiple handle simultaneously.