Automatic film feeding device for plastic bag production

Abstract

The utility model relates to the field of plastic bag production, and discloses an automatic film feeding device for plastic bag production, which comprises a base, the top of the base is fixedly connected with two groups of mounting racks, one sides, close to each other, of the two groups of mounting racks are fixedly connected with a bottom plate, and the bottom plate is fixedly connected with the bottom plate. The winding device comprises a bottom plate, a winding mechanism is arranged above the bottom plate, the winding mechanism comprises a stepping motor, the stepping motor is fixedly mounted on the front sides of mounting frames, conveying rollers are rotatably mounted on the sides, close to each other, of the two mounting frames, a pressing mechanism is arranged on the right of the conveying rollers, and a controller is fixedly connected to the front sides of the mounting frames. According to the utility model, when the flattening mechanism is arranged and the stepping motor works to drive the plastic bag film to slide below the guide plate, the inclined guide plate can increase the transverse tension of the plastic bag film, so that the possibility that the plastic bag film is wrinkled during rolling is reduced, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic bag production, especially a film automatic feeding device for plastic bag production. BACKGROUND

[0002] Plastic film refers to the film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products account for an increasingly large share of the market, especially composite plastic soft packaging, which has been widely used in food, medicine, chemical industry and other fields. These products have brought great convenience to people's life. During the processing of plastic film, it needs to be wound on the core after the plastic film is formed by flow forming.

[0003] After searching, the patent with patent number CN210190755U discloses a feeding device for plastic film bag making, which comprises a main support, an adjusting piece is welded at the front end of the main support, two groups of clamping strips are connected at the front end of the adjusting piece, a film winding roller is installed between the opposite sides of the two groups of clamping strips, a transfer roller is installed at the front end of the main support, and a limiting chuck is connected between the top side walls of the main support. The patent limits the position of the film by winding it on the feeding roller between the two limiting blocks, preventing the film from shifting left and right on the surface of the feeding roller, improving the stability of the film feeding and the product quality. However, the plastic bag film may wrinkle during feeding, affecting the appearance quality of the plastic bag film and causing problems such as printing deviation, loose sealing and other problems during subsequent processing, resulting in reduced product quality. Therefore, a film automatic feeding device for plastic bag production is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a film automatic feeding device for plastic bag production, aiming to improve the problem of "plastic bag film may wrinkle and reduce product quality" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a film automatic feeding device for plastic bag production, comprising a base, the top of the base is fixedly connected with a mounting frame, the number of mounting frames is two groups, the side of the two groups of mounting frames close to each other is fixedly connected with a bottom plate, a winding mechanism is arranged above the bottom plate, the winding mechanism comprises a stepping motor, the stepping motor is fixedly installed on the front side of the mounting frame, a conveying roller is rotatably installed on the side of the two groups of mounting frames close to each other, a pressing mechanism is arranged on the right side of the conveying roller, a controller is fixedly connected to the front side of the mounting frame, and a flattening mechanism is arranged above the bottom plate.

[0006] As a further description of the above technical solutions:

[0007] The winding mechanism further comprises a rotating shaft, the rotating shaft is fixedly installed at the rear end of the output shaft of the stepping motor, the rotating shaft penetrates and is rotatably installed on the inner wall of the mounting frame, and the circumferential surface of the rotating shaft is fixedly connected with a winding core.

[0008] As a further description of the above technical solutions:

[0009] The pressing mechanism comprises a regulating screw rod, the regulating screw rod penetrates and is rotatably installed on the inner wall of the mounting frame, and the front side of the regulating screw rod is fixedly connected with a knob.

[0010] As a further description of the above technical solutions:

[0011] The pressing mechanism further comprises a limiting baffle, the limiting baffle is slidably installed on the circumferential surface of the regulating screw rod, the surface of the mounting frame is provided with a sliding groove, and the limiting baffle slides on the inner wall of the sliding groove.

[0012] As a further description of the above technical solutions:

[0013] The flattening mechanism comprises a pressing roller, and the circumferential surface of the pressing roller is fixedly connected with a guide plate.

[0014] As a further description of the above technical solutions:

[0015] The flattening mechanism further comprises a pressing rod, one end of the pressing rod is fixedly connected with the pressing roller, and the other end of the pressing rod is rotatably installed on the inner wall of the mounting frame.

[0016] As a further description of the above technical solutions:

[0017] The flattening mechanism further comprises a positioning rod and a sliding block, one end of the positioning rod is rotatably connected with the middle part of the pressing rod, and the other end of the positioning rod is rotatably connected with the surface of the sliding block.

[0018] As a further description of the above technical solutions:

[0019] The inner wall of the mounting frame is provided with a groove, the sliding block is slidably installed on the inner wall of the groove, and the sliding block is elastically connected with the inner wall of the groove through a spring.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1、The flattening mechanism is arranged in the utility model, when the stepping motor works to drive the plastic bag film to slide below the guide plate, the guide plate arranged in an inclined manner can increase the transverse tension of the plastic bag film, thereby reducing the possibility of wrinkles of the plastic bag film during winding and improving the quality of products.

[0022] 2. The utility model discloses a compact structure, through setting up the pressing mechanism, rotates the knob, drives two sets of limit baffle to be close to each other and be away from each other, make the limit baffle to the plastic bag film downward press tightly, can adjust according to the width of plastic bag film, and the adaptability is higher, can adapt to different production environment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole three-dimensional structure overhead view schematic diagram in the utility model;

[0024] Figure 2 It is the whole three-dimensional structure bottom view schematic diagram in the utility model;

[0025] Figure 3 It is the utility model Figure 1 A place enlarged three-dimensional structure schematic diagram in the utility model;

[0026] Figure 4 It is the utility model Figure 3 B place enlarged three-dimensional structure schematic diagram in the utility model.

[0027] Legend:

[0028] 1, base plate;2, mounting frame;3, stepper motor;4, rotating shaft;5, roll core;6, control screw;7, knob;8, limit baffle;9, sliding slot;10, bottom plate;11, conveying roller;12, controller;13, pressing roller;14, guide plate;15, pressing rod;16, positioning rod;17, sliding block;18, spring;19, recess. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] Refer to Figure 1The utility model provides an embodiment: a kind of film automatic feeding device for plastic bag production, including base 1, base 1 plays the role of support, provide stability when working, improve the accuracy when film feeding, the top of base 1 is fixedly connected with the mounting bracket 2 of being set in vertical state, the quantity of mounting bracket 2 is set to two groups, the side of two groups mounting bracket 2 close to each other is fixedly connected with the bottom plate 10 of being set in horizontal state, bottom plate 10 is set to cubic, the above of bottom plate 10 is provided with winding mechanism, winding mechanism includes stepper motor 3, stepper motor 3 is set to servo motor, can accurately control the angle of its output shaft rotation, to accurately control the length of film winding, stepper motor 3 is fixedly installed on the front side of mounting bracket 2, winding mechanism further includes shaft 4, shaft 4 is fixedly installed on the output shaft rear end of stepper motor 3, stepper motor 3 works to provide power and drive shaft 4 rotation, shaft 4 penetrates and is rotatably installed on the inner wall of mounting bracket 2, the circumferential surface of shaft 4 is fixedly connected with the winding core 5 for winding film, it is convenient to store film, the side of two groups mounting bracket 2 close to each other is rotatably installed with conveying roller 11, the right of conveying roller 11 is provided with pressure mechanism, the front side of mounting bracket 2 is fixedly connected with the controller 12 for controlling the working state of stepper motor 3, and the working state and parameter of equipment can be viewed through the screen of controller 12, the above of bottom plate 10 is provided with paving mechanism.

[0031] Refer to Figure 1 , Figure 2 , pressure mechanism includes regulating screw rod 6, regulating screw rod 6 is set to bidirectional screw rod, the surface of regulating screw rod 6 is provided with two thread grooves with opposite rotation direction, regulating screw rod 6 penetrates and is rotatably installed on the inner wall of mounting bracket 2, the front side of regulating screw rod 6 is fixedly connected with knob 7 for facilitating staff to rotate regulating screw rod 6, the surface of knob 7 is provided with anti-slip key pattern, for increasing the friction force of knob 7 and hand, reduce the possibility of skidding, pressure mechanism further includes limiting baffle 8, limiting baffle 8 is J-shaped, the end of limiting baffle 8 away from regulating screw rod 6 contacts film, limiting baffle 8 is slidably installed on the circumferential surface of regulating screw rod 6, the number of limiting baffle 8 is set to two groups, two groups limiting baffle 8 are slidably installed on thread groove with opposite thread respectively, the surface of mounting bracket 2 is provided with sliding slot 9, limiting baffle 8 slides on the inner wall of sliding slot 9, regulating screw rod 6 rotation drives limiting baffle 8 to be close to each other or away from each other on the axial direction of regulating screw rod 6.

[0032] Refer to Figure 1 , Figure 3 Figure 4 ​The flattening mechanism comprises a pressing roller 13, the circumferential surface of the pressing roller 13 is fixedly connected with two groups of guide plates 14 arranged symmetrically, the two groups of guide plates 14 are respectively inclined outward, the guide plates 14 are arranged to improve the transverse tension of the film when the film slides below the guide plates 14, and wrinkles are prevented from occurring during winding. The flattening mechanism further comprises a pressing rod 15, one end of the pressing rod 15 is fixedly connected with the pressing roller 13, the other end of the pressing rod 15 is rotatably installed on the inner wall of the mounting frame 2, the pressing rod 15 is fixedly installed on the front and rear sides of the pressing roller 13, and the flattening mechanism further comprises a positioning rod 16 and a sliding block 17. One end of the positioning rod 16 is rotatably connected with the middle part of the pressing rod 15, the length of the positioning rod 16 is shorter than that of the pressing rod 15, and the positioning rod 16 plays a transmission role. The other end of the positioning rod 16 is rotatably connected with the surface of the sliding block 17, a groove 19 is formed in the inner wall of the mounting frame 2, and the sliding block 17 is slidably installed on the inner wall of the groove 19. The sliding direction of the sliding block 17 is upward and downward sliding, and the sliding block 17 is elastically connected with the inner wall of the groove 19 through a spring 18. The spring 18 applies a downward elastic force to the sliding block 17.

[0033] Working principle: in use, the plastic bag film is passed below the one end of the limiting baffle 8 away from the regulating screw 6, then the plastic bag film is passed below the guide plate 14, then one end of the plastic bag film is fixed on the surface of the winding core 5, then the power of the stepping motor 3 is started through the controller 12, the stepping motor 3 works to drive the rotating shaft 4 to rotate, the rotating shaft 4 drives the winding core 5 to rotate, and then the plastic bag film is wound up.

[0034] Before winding, the distance between the two groups of limiting baffles 8 can be adjusted to adapt to plastic bag films of different widths. When adjusting, the knob 7 is first rotated, the knob 7 drives the regulating screw 6 to rotate, the regulating screw 6 drives the two groups of limiting baffles 8 to move closer to or away from each other, and when the winding core 5 winds the plastic bag film under the action of the stepping motor 3, the two groups of limiting baffles 8 press the plastic bag film downward, so that the plastic bag film remains taut during winding, thereby preventing the wound film from being loose.

[0035] During winding, the spring 18 applies a downward elastic force to the sliding block 17, so that the sliding block 17 has a downward displacement tendency, and then presses the positioning rod 16 downward. The positioning rod 16 applies a downward force to the pressing roller 13 through the pressing rod 15, so that the guide plate 14 and the plastic bag film are attached together. When the plastic bag film slides relative to the guide plate 14, since the two groups of guide plates 14 are arranged at an outwardly inclined angle, the possibility of wrinkles in the plastic bag film during winding is reduced.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A film automatic feeding device for plastic bag production, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with mounting racks (2), the number of the mounting racks (2) is set to two groups, the side close to each other of the two groups of mounting racks (2) is fixedly connected with a bottom plate (10), the upper side of the bottom plate (10) is provided with a winding mechanism, the winding mechanism comprises a stepping motor (3), the stepping motor (3) is fixedly installed on the front side of the mounting rack (2), the side close to each other of the two groups of mounting racks (2) is rotatably installed with a conveying roller (11), the right side of the conveying roller (11) is provided with a pressing mechanism, the front side of the mounting rack (2) is fixedly connected with a controller (12), the upper side of the bottom plate (10) is provided with a flattening mechanism.

2. The automatic film feeding device for plastic bag production according to claim 1, characterized in that: The winding mechanism further comprises a rotating shaft (4), the rotating shaft (4) is fixedly installed at the output shaft rear end of the stepping motor (3), the rotating shaft (4) penetrates and is rotatably installed on the inner wall of the mounting rack (2), the circumferential surface of the rotating shaft (4) is fixedly connected with a winding core (5).

3. The automatic film feeding device for plastic bag production according to claim 1, characterized in that: The pressing mechanism comprises a regulating screw (6), the regulating screw (6) penetrates and is rotatably installed on the inner wall of the mounting rack (2), the front side of the regulating screw (6) is fixedly connected with a knob (7).

4. The automatic film feeding device for plastic bag production according to claim 3, characterized in that: The pressing mechanism further comprises a limiting baffle (8), the limiting baffle (8) is slidingly installed on the circumferential surface of the regulating screw (6), the surface of the mounting rack (2) is provided with a sliding groove (9), the limiting baffle (8) slides on the inner wall of the sliding groove (9).

5. The automatic film feeding device for plastic bag production according to claim 1, characterized in that: The flattening mechanism comprises a pressing roller (13), the circumferential surface of the pressing roller (13) is fixedly connected with a guide plate (14).

6. The automatic film feeding device for plastic bag production according to claim 5, characterized in that: The flattening mechanism further comprises a pressing rod (15), one end of the pressing rod (15) is fixedly connected with the pressing roller (13), the other end of the pressing rod (15) is rotatably installed on the inner wall of the mounting rack (2).

7. The automatic film feeding device for plastic bag production according to claim 6, characterized in that: The flattening mechanism further comprises a positioning rod (16) and a sliding block (17), one end of the positioning rod (16) is rotatably connected with the middle part of the pressing rod (15), the other end of the positioning rod (16) is rotatably connected with the surface of the sliding block (17).

8. The automatic film feeding device for plastic bag production according to claim 7, characterized in that: The inner wall of the mounting rack (2) is provided with a groove (19), the sliding block (17) is slidingly installed on the inner wall of the groove (19), the sliding block (17) is elastically connected with the inner wall of the groove (19) through a spring (18).

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