A plastic bag rolling device

Abstract

The utility model relates to the technical field of plastic bag production, disclose a plastic bag winding device, including base, plastic bag passes through the top of base along the production direction, still include: winding roller, set up in the end of production direction, be provided with the clamping plate on the winding roller, the clamping plate has the elastic tendency to the winding roller, a pair of tensioning rollers, opposite arrangement is in the both sides of base top, and is parallelly distributed with winding roller, be provided with drive assembly on the base, and the drive end of drive assembly is linked with a pair of tensioning rollers to make a pair of tensioning rollers close to each other or away from each other, tensioning roller can lift along the vertical direction, and tensioning roller is rotatably connected with the base, and rolls contact with the bottom surface of plastic bag, can realize the winding quality of improving plastic bag roll.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, and in particular to a plastic bag winding device. Background Technology

[0002] Plastic bags are a type of packaging bag. During the production and processing, the processed plastic bags need to be rolled up, which requires the use of a rolling device.

[0003] In existing technologies, such as the winding mechanism of a blown film device for plastic bag processing (application number 202120879999.7), the winding roller is stabilized by a fixed rod and a roll. However, there is no effective tensioning method during the plastic bag winding process, which can lead to the plastic bag roll becoming loose after winding, affecting the quality of the winding operation. Therefore, there is an urgent need for a plastic bag winding device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a plastic bag winding device to solve the problems existing in the prior art and improve the winding quality of plastic bag rolls.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a plastic bag winding device, including a base, wherein the plastic bag passes over the top of the base along the production direction, and further includes:

[0006] A take-up roller is disposed at the end of the production direction, and a clamp is provided on the take-up roller, the clamp having an elastic tendency toward the take-up roller;

[0007] A pair of tension rollers are arranged opposite each other on the top sides of the base and are distributed parallel to the take-up roller. A drive assembly is provided on the base. The drive end of the drive assembly is connected to the pair of tension rollers so that the pair of tension rollers can move closer or further away from each other. The tension rollers can rise and fall in the vertical direction. The tension rollers are rotatably connected to the base and roll in contact with the bottom surface of the plastic bag.

[0008] Preferred options also include:

[0009] A fixing plate is located on one side of the base and fixed directly below the take-up roller. A power component is provided on one side of the fixing plate. The output end of the power component is detachably connected to the take-up roller so that the take-up roller can rotate relative to the base.

[0010] Preferably, the power assembly includes:

[0011] A rotating motor is fixed to one side of the top surface of the fixed plate, and the mounting plate extends vertically upward. The rotating motor is fixed to the outer wall of the mounting plate.

[0012] A rotating rod is rotatably connected above the fixed plate. The output shaft of the rotating motor passes through the mounting plate and is coaxially fixed to the rotating rod. A retaining ring is fitted on each side of the rotating rod. The retaining ring on the side furthest from the rotating motor is threadedly connected to the rotating rod. An installation area is defined between the two retaining rings. A key shaft is coaxially fixed to the rotating rod within the installation area. A keyway with both ends is provided inside the take-up roller, and the take-up roller is keyed to the key shaft.

[0013] Preferably, a groove is provided on one side of the take-up roller, the groove extends along the axial direction of the take-up roller, the clamping plate slides in the groove, and support rods are fixedly connected to both ends of the clamping plate. The two ends of a spring are fixedly connected between the support rods and the inner wall of the bottom end of the groove, the bottom surface of the clamping plate is arranged in the groove, and the top surface of the clamping plate extends out of the groove.

[0014] Preferably, the driving component includes:

[0015] A pair of drive plates are distributed opposite each other on the top of the base. A through groove is provided in the base along the production direction. The drive plates are mounted above the through groove, and both ends of the drive plates are slidably connected to the base.

[0016] A driving component is disposed on the base, and the driving end of the driving component is connected to a pair of driving plates so that the pair of driving plates move closer or further apart from each other. The tension roller is rotatably connected to the top surface of the driving plate.

[0017] Preferably, the driving element includes:

[0018] A bidirectional lead screw has sliding grooves on opposite sides of the top of the base. The sliding grooves are parallel to the through grooves. The bidirectional lead screw is rotatably connected in any one of the sliding grooves. A drive motor is fixedly connected to the outer wall of the base. The output shaft of the drive motor is coaxially fixedly connected to the bidirectional lead screw.

[0019] A pair of sliders are threaded along the center symmetrically at both ends of the bidirectional lead screw. The pair of sliders are fixedly connected to the pair of drive plates in a one-to-one correspondence. The sliders are slidably connected to the slide groove.

[0020] A guide block is fixed to one end of the drive plate away from the slider, and the two guide blocks are symmetrically slidably connected to both ends of the guide rod along the center. The guide rod is fixed in the groove and distributed opposite to the bidirectional lead screw.

[0021] Preferably, the top surface of the drive plate is provided with an installation groove, the bottom surface of the drive plate is fixedly connected to a servo cylinder, the piston rod of the servo cylinder extends vertically upward and is fixedly connected to a lifting plate, the two ends of the lifting plate are respectively slidably connected to the opposite side of the inner wall of the installation groove, the top surface of the lifting plate is fixedly connected to a support frame, and the tension roller is rotatably connected inside the support frame.

[0022] Preferably, a limiting groove is formed on the opposite side of the inner wall of the mounting groove, a limiting rod is fixedly connected in the vertical direction in the limiting groove, and limiting blocks are fixedly connected to both ends of the lifting plate, the limiting blocks are sleeved on the limiting rod and slide in the limiting groove.

[0023] The present invention discloses the following technical effects:

[0024] This technical solution involves conveying the plastic bag to the base along the production direction and finally winding it up using a take-up roller. The plastic bag passes through a pair of tension rollers at the top of the base. A drive assembly moves the pair of tension rollers closer together or further apart, and the tension rollers roll and contact the plastic bag by rising and falling, thus fully flattening and unfolding the plastic bag. This ensures that the surface of the plastic bag remains taut during the winding process. The ends of the plastic bag are clamped and fixed by elastically connected clamps on the take-up rollers, thereby achieving stable and reliable tensioning and winding of the plastic bag, significantly improving the winding quality of the plastic bag. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a diagram showing the positional relationship between the base and the winding roller in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the take-up roller and key shaft in this utility model;

[0028] Figure 3 In this utility model Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 This is a schematic diagram of the tension roller in this utility model;

[0030] Figure 5 This is a diagram showing the connection relationship between the limiting block and the limiting rod in this utility model;

[0031] The components are as follows: 1. Base; 2. Take-up roller; 3. Clamping plate; 4. Tensioning roller; 5. Fixing plate; 6. Rotating motor; 7. Mounting plate; 8. Rotating rod; 9. Snap ring; 10. Key shaft; 11. Support rod; 12. Spring; 13. Drive plate; 14. Bidirectional lead screw; 15. Drive motor; 16. Slider; 17. Guide block; 18. Guide rod; 19. Servo cylinder; 20. Lifting plate; 21. Support frame; 22. Limiting rod; 23. Limiting block. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1-5 This utility model provides a plastic bag winding device, including a base 1, wherein the plastic bag passes over the top of the base 1 along the production direction, and further includes:

[0035] The take-up roller 2 is located at the end of the production direction, and a clamping plate 3 is provided on the take-up roller 2. The clamping plate 3 has an elastic tendency toward the take-up roller 2.

[0036] A pair of tension rollers 4 are arranged opposite each other on the top two sides of the base 1 and are distributed parallel to the take-up roller 2. A drive assembly is provided on the base 1. The drive end of the drive assembly is connected to the pair of tension rollers 4 so that the pair of tension rollers 4 can move closer or further away from each other. The tension rollers 4 can rise and fall in the vertical direction. The tension rollers 4 are rotatably connected to the base 1 and roll in contact with the bottom surface of the plastic bag.

[0037] This technical solution involves conveying the plastic bag along the production direction to the base 1, and finally winding it up by the take-up roller 2. The plastic bag passes through a pair of tension rollers 4 at the top of the base 1. The drive assembly moves the pair of tension rollers 4 closer to each other or further apart, and the tension rollers 4 rise and fall to make rolling contact with the plastic bag, thereby fully flattening and unfolding the plastic bag. This ensures that the surface of the plastic bag remains taut during the winding process. The ends of the plastic bag are clamped and fixed by the clamping plate 3 elastically connected to the take-up roller 2, thus achieving stable and reliable tensioning and winding of the plastic bag, which greatly improves the winding quality of the plastic bag.

[0038] Furthermore, it also includes:

[0039] The fixing plate 5 is located on one side of the base 1 and fixed directly below the take-up roller 2. A power component is provided on one side of the fixing plate 5. The output end of the power component is detachably connected to the take-up roller 2 so that the take-up roller 2 can rotate relative to the base 1.

[0040] The power assembly is supported by the fixed plate 5, which provides driving force to the take-up roller 2, enabling the take-up roller 2 to rotate and rewind. The take-up roller 2 is detachable from the power assembly, making it convenient to replace the plastic bag roll after winding and improving efficiency.

[0041] Furthermore, the powertrain components include:

[0042] Rotating motor 6, mounting plate 7 is fixedly connected to one side of the top surface of fixed plate 5, mounting plate 7 extends vertically upward, rotating motor 6 is fixedly connected to the outer wall of mounting plate 7;

[0043] The rotating rod 8 is rotatably connected above the fixed plate 5. The output shaft of the rotating motor 6 passes through the mounting plate 7 and is coaxially fixed to the rotating rod 8. The two sides of the rotating rod 8 are respectively fitted with retaining rings 9. The retaining ring 9 on the side away from the rotating motor 6 is threadedly connected to the rotating rod 8. The two retaining rings 9 define the installation range. The rotating rod 8 is coaxially fixed to the key shaft 10 within the installation range. The winding roller 2 has a keyway that passes through both ends. The winding roller 2 is keyed to the key shaft 10.

[0044] By using the key connection between the take-up roller 2 and the key shaft 10, and by using the rotating motor 6 to provide rotational power to the rotating rod 8, the take-up roller 2 can be rotated and wound. After disassembling the retaining ring 9 from the rotating rod 8 by twisting the retaining ring 9 on the side away from the rotating motor 6, the take-up roller 2 can be slid out from the key shaft 10, thus achieving a detachable connection between the rotating rod 8 and the take-up roller 2.

[0045] Specifically, the diameter of the key shaft 10 is larger than the diameter of the rotating rod 8, and the diameter of the retaining ring 9 is larger than the diameter of the take-up roller 2, so as to facilitate the fixing of the take-up roller 2, and the take-up roller 2 can be slid out after the retaining ring 9 is screwed off.

[0046] To ensure the stability of the winding roller 2, another retaining ring 9, located near the rotating motor 6, is fitted onto the rotating rod 8 and fixedly connected to it.

[0047] Furthermore, a groove is provided on one side of the take-up roller 2, the groove extends along the axial direction of the take-up roller 2, the clamping plate 3 slides in the groove, and the two ends of the clamping plate 3 are respectively fixedly connected to the support rods 11, and the two ends of the springs 12 are respectively fixedly connected between the support rods 11 and the inner wall of the bottom end of the groove. The bottom surface of the clamping plate 3 is arranged in the groove, and the top surface of the clamping plate 3 extends out of the groove.

[0048] The clamping plate 3 is elastically slidably connected in the groove by the support rod 11 and the spring 12, and the top surface of the clamping plate 3 extends out of the groove, making it convenient for personnel to pull the clamping plate 3. After the bottom surface of the clamping plate 3 is elastically stretched out of the groove, the end of the plastic bag is inserted and then the clamping plate 3 is released, thereby clamping and fixing the end of the plastic bag to the winding roller 2.

[0049] Furthermore, the driving components include:

[0050] A pair of drive plates 13 are distributed opposite each other on the top of the base 1. A through groove is provided in the base 1 along the production direction. The drive plates 13 are mounted on the through groove, and the two ends of the drive plates 13 are slidably connected to the base 1.

[0051] A driving component is mounted on the base 1. The driving end of the driving component is connected to a pair of driving plates 13 so that the pair of driving plates 13 can move closer or further apart from each other. A tension roller 4 is rotatably connected to the top surface of the driving plate 13.

[0052] The driving component drives a pair of driving plates 13 to move closer or further apart, and the tension roller 4 is rotatably connected to the driving plate 13, thereby realizing the driving control of the tension roller 4. The tension roller 4 is moved back and forth along the production direction to achieve the tensioning of the plastic bag.

[0053] Furthermore, the driving components include:

[0054] The bidirectional lead screw 14 has sliding grooves on both sides of the top of the base 1. The sliding grooves and through grooves are distributed in parallel. The bidirectional lead screw 14 is rotatably connected in any one of the sliding grooves. The outer wall of the base 1 is fixedly connected to a drive motor 15. The output shaft of the drive motor 15 is coaxially fixedly connected to the bidirectional lead screw 14.

[0055] A pair of sliders 16 are threaded along the center symmetrically at both ends of the bidirectional lead screw 14. The pair of sliders 16 are fixedly connected to a pair of drive plates 13 in a one-to-one correspondence. The sliders 16 are slidably connected to the slide groove.

[0056] Guide blocks 17 are fixedly connected to the end of the drive plate 13 away from the slider 16, and the two guide blocks 17 are symmetrically slidably connected to the two ends of the guide rod 18 along the center. The guide rod 18 is fixedly connected in the slide groove and is distributed opposite to the bidirectional lead screw 14.

[0057] The drive motor 15 drives the bidirectional lead screw 14 to rotate. A pair of sliders 16 are threaded onto both ends of the bidirectional lead screw 14 and fixed to the drive plate 13. Combined with the sliding support of the guide block 17 and the guide rod 18 on the other end of the drive plate 13, the bidirectional lead screw 14 drives the pair of drive plates 13 to move closer or further apart, so as to unfold and flatten the plastic bag.

[0058] Specifically, both the rotary motor 6 and the drive motor 15 are common servo-controlled motors.

[0059] Furthermore, the top surface of the drive plate 13 is provided with an installation groove, and the bottom surface of the drive plate 13 is fixedly connected to a servo cylinder 19. The piston rod of the servo cylinder 19 extends vertically upward and is fixedly connected to a lifting plate 20. The two ends of the lifting plate 20 are respectively slidably connected to the opposite side of the inner wall of the installation groove. The top surface of the lifting plate 20 is fixedly connected to a support frame 21, and a tension roller 4 is rotatably connected inside the support frame 21.

[0060] The tension roller 4 is raised by the lifting plate 20 driven by the servo cylinder 19, so that the height of the tension roller 4 is higher than that of the take-up roller 2, ensuring the effect of rolling contact between the tension roller 4 and the plastic bag. The tensioning and unfolding are achieved by the rolling contact between the tension roller 4 and the plastic bag.

[0061] Furthermore, a limiting groove is opened on the opposite side of the inner wall of the installation groove, and a limiting rod 22 is fixedly connected in the vertical direction in the limiting groove. Limiting blocks 23 are fixedly connected to both ends of the lifting plate 20, and the limiting blocks 23 are sleeved on the limiting rod 22 and slidably connected to the limiting groove.

[0062] The cooperation of the limiting block 23, the limiting groove, and the limiting rod 22 provides stable sliding support for both ends of the lifting plate 20, ensuring the stability of the lifting plate 20 driving the tension roller 4 to rise and fall.

[0063] This utility model provides the working principle of a plastic bag winding device:

[0064] The plastic bag is fed into the top of the base 1 along the production direction, and the end of the plastic bag is clamped and fixed to the take-up roller 2 by the clamp 3. The take-up roller 2 is driven to rotate by the rotating motor 6, which provides a winding force to the plastic bag. During the process, the servo cylinder 19 drives the tension roller 4 to rise, and the tension roller 4 rolls into contact with the bottom surface of the plastic bag. At the same time, the drive motor 15 drives a pair of tension rollers 4 to reciprocate by moving closer or further away from each other, so as to achieve tensioning and unfolding of the plastic bag. Combined with the take-up roller 2, the winding operation is carried out to improve the winding quality of the plastic bag roll.

[0065] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0066] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A plastic bag winding device, comprising a base (1), wherein a plastic bag passes over the top of the base (1) along the production direction, characterized in that, Also includes: A take-up roller (2) is provided at the end of the production direction, and a clamp (3) is provided on the take-up roller (2), the clamp (3) having an elastic tendency toward the take-up roller (2); A pair of tension rollers (4) are arranged opposite to each other on the top sides of the base (1) and are distributed parallel to the take-up roller (2). A drive assembly is provided on the base (1). The drive end of the drive assembly is connected to the pair of tension rollers (4) so ​​that the pair of tension rollers (4) move closer or further away from each other. The tension rollers (4) can move up and down in the vertical direction. The tension rollers (4) are rotatably connected to the base (1) and roll in contact with the bottom surface of the plastic bag.

2. The plastic bag winding device according to claim 1, characterized in that, Also includes: A fixing plate (5) is located on one side of the base (1) and fixed directly below the take-up roller (2). A power component is provided on one side of the fixing plate (5). The output end of the power component is detachably connected to the take-up roller (2) so that the take-up roller (2) can rotate relative to the base (1).

3. The plastic bag winding device according to claim 2, characterized in that, The power assembly includes: Rotating motor (6), mounting plate (7) is fixedly connected to one side of the top surface of the fixed plate (5), the mounting plate (7) extends vertically upward, and the rotating motor (6) is fixedly connected to the outer wall of the mounting plate (7); A rotating rod (8) is rotatably connected above the fixed plate (5). The output shaft of the rotating motor (6) passes through the mounting plate (7) and is coaxially fixed to the rotating rod (8). Snap rings (9) are respectively fitted on both sides of the rotating rod (8). The snap ring (9) on the side away from the rotating motor (6) is threadedly connected to the rotating rod (8). An installation range is defined between the two snap rings (9). A key shaft (10) is coaxially fixed to the rotating rod (8) within the installation range. A keyway with both ends is opened in the winding roller (2). The winding roller (2) is keyed to the key shaft (10).

4. The plastic bag winding device according to claim 1, characterized in that: A groove is provided on one side of the take-up roller (2), the groove extends along the axial direction of the take-up roller (2), the clamping plate (3) slides in the groove, and support rods (11) are fixedly connected to both ends of the clamping plate (3). The two ends of springs (12) are fixedly connected between the support rods (11) and the inner wall of the bottom end of the groove, the bottom surface of the clamping plate (3) is arranged in the groove, and the top surface of the clamping plate (3) extends out of the groove.

5. The plastic bag winding device according to claim 1, characterized in that, The driving component includes: A pair of drive plates (13) are distributed opposite to each other on the top of the base (1). A through groove is provided in the base (1) along the production direction. The drive plates (13) are mounted above the through groove, and the two ends of the drive plates (13) are slidably connected to the base (1). A driving component is disposed on the base (1). The driving end of the driving component is connected to a pair of driving plates (13) so that the pair of driving plates (13) move closer or further away from each other. The top surface of the driving plate (13) is rotatably connected to the tension roller (4).

6. The plastic bag winding device according to claim 5, characterized in that, The driving component includes: A bidirectional lead screw (14) is provided with sliding grooves on opposite sides of the top of the base (1). The sliding grooves are distributed parallel to the through grooves. The bidirectional lead screw (14) is rotatably connected in any one of the sliding grooves. A drive motor (15) is fixedly connected to the outer wall of the base (1). The output shaft of the drive motor (15) is coaxially fixedly connected to the bidirectional lead screw (14). A pair of sliders (16) are threaded along the center symmetrically at both ends of the bidirectional lead screw (14). The pair of sliders (16) are fixedly connected to the pair of drive plates (13) in a one-to-one correspondence. The sliders (16) are slidably connected to the groove. Guide blocks (17) are fixed to one end of the drive plate (13) away from the slider (16), and the two guide blocks (17) are symmetrically slidably connected to the two ends of the guide rod (18) along the center. The guide rod (18) is fixed in the groove and distributed opposite to the bidirectional lead screw (14).

7. The plastic bag winding device according to claim 5, characterized in that: The top surface of the drive plate (13) is provided with an installation groove. A servo cylinder (19) is fixedly connected to the bottom surface of the drive plate (13). The piston rod of the servo cylinder (19) extends vertically upward and is fixedly connected to a lifting plate (20). The two ends of the lifting plate (20) are respectively slidably connected to the opposite side of the inner wall of the installation groove. A support frame (21) is fixedly connected to the top surface of the lifting plate (20). The tension roller (4) is rotatably connected inside the support frame (21).

8. The plastic bag winding device according to claim 7, characterized in that: A limiting groove is provided on the opposite side of the inner wall of the mounting groove. A limiting rod (22) is fixedly connected in the vertical direction in the limiting groove. A limiting block (23) is fixedly connected to both ends of the lifting plate (20). The limiting block (23) is sleeved on the limiting rod (22) and slides in the limiting groove.

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