Plastic bag unreeling machine

Abstract

The utility model discloses a plastic bag unreeling machine which comprises a workbench, a clamping mechanism and a leveling mechanism. A supporting plate is arranged at the rear end of the upper surface of the workbench, an unwinding roller is rotationally connected to the upper end of the front side face of the supporting plate, and a support is arranged at the right end of the upper surface of the workbench; the clamping mechanism comprises a blocking piece, limiting grooves, sliding columns, sliding blocks and a baffle ring, the blocking piece is fixedly arranged on the outer wall of the unwinding roller in a sleeving mode, the limiting grooves are formed in the left end and the right end of the front side of the unwinding roller correspondingly, the sliding columns are slidably connected into the unwinding roller, the sliding blocks are arranged on the left side and the right side of the front end of each sliding column correspondingly, and the sliding blocks are slidably connected with the adjacent limiting grooves correspondingly; the outer side ends of the sliding blocks are fixedly connected with the inner side wall of the baffle ring. According to the plastic bag unreeling machine, when a plastic bag is unreeled, a plastic bag roll is fixed more firmly, the plastic bag cannot deviate when unreeled, the plastic bag unreeling effect is prevented from being affected, and meanwhile the plastic bag is leveled and prevented from wrinkling.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, in particular to a plastic bag unwinding machine. Background Art

[0002] Plastic bags are made of plastic (commonly used plastics include polypropylene, polyester, nylon, etc.) and are essential items in people's daily lives. They are often used to carry other items. They are widely used because of their low cost, extremely light weight, large capacity, and easy storage. However, due to the disadvantages of plastic bags' extremely long degradation cycle and difficulty in disposal, some countries have banned their production and use.

[0003] In some existing plastic bag unwinding machines, the plastic bag is put on the unwinding roller, and then the motor drives the unwinding roller to rotate and unwind;

[0004] The traditional plastic bag unwinding machine has the following problems: when the plastic bag is unwinding, the plastic bag roll is not firmly fixed, the plastic bag roll will deviate, affecting the unwinding effect of the plastic bag. At the same time, when the plastic bag is unwinding, the plastic bag will wrinkle. For this reason, we propose a plastic bag unwinding machine. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a plastic bag unwinding machine. When the plastic bag is unrolled, the plastic bag roll is fixed more firmly, so that the plastic bag will not deviate during unwinding, thereby avoiding affecting the unwinding effect of the plastic bag. At the same time, the plastic bag is flattened to avoid wrinkles in the plastic bag, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a plastic bag unwinding machine, comprising a workbench, a clamping mechanism and a leveling mechanism;

[0007] Workbench: A support plate is provided at the rear end of its upper surface, an unwinding roller is rotatably connected to the upper end of the front side of the support plate, and a bracket is provided at the right end of the upper surface of the workbench;

[0008] Clamping mechanism: It includes a baffle, a limiting groove, a sliding column, a slider and a retaining ring. The baffle is fixedly sleeved on the outer wall of the unwinding roller. The left and right ends of the front side of the unwinding roller are respectively provided with limiting grooves. The sliding column is slidably connected to the inside of the unwinding roller. The left and right sides of the front end of the sliding column are respectively provided with sliders. The sliders are respectively slidably connected to the adjacent limiting grooves. The outer ends of the sliders are fixedly connected to the inner wall of the retaining ring.

[0009] Leveling mechanism: It is set inside the bracket. When the plastic bag is unrolled, it fixes the plastic bag roll more firmly, so that the plastic bag will not deviate during unrolling, avoiding affecting the unrolling effect of the plastic bag. At the same time, it flattens the plastic bag to avoid wrinkles.

[0010] Furthermore, a control switch group is provided at the left end of the upper surface of the workbench, and the input end of the control switch group is electrically connected to an external power supply to provide electrical connection for various electrical appliances.

[0011] Furthermore, a motor 1 is provided on the rear side of the support plate, the front end of the output shaft of the motor 1 is fixedly connected to the rear end of the unwinding roller, and the input end of the motor 1 is electrically connected to the output end of the control switch group to provide unwinding drive.

[0012] Furthermore, the clamping mechanism also includes a socket, a slide, a telescopic rod, a spring, a slide and an insertion block. The outer wall of the unwinding roller is provided with evenly distributed sockets, the rear end of the slide is provided with a slide, the inside of the slide is slidably connected to the slide, the left end of the slide is fixedly connected to the insertion block, the insertion block is installed in coordination with the socket, a front-to-back symmetrical telescopic rod is fixedly connected between the right end of the slide and the left side wall of the slide, and a spring is respectively sleeved on the outside of the telescopic rod to achieve fixation.

[0013] Furthermore, the leveling mechanism includes a lower leveling roller, two telescopic rods and two springs. The inner side walls of the bracket are respectively provided with sliding grooves. The lower side between the two sliding grooves is slidably connected with the lower leveling roller. The bottom wall of the sliding groove and the front and rear ends of the lower surface of the lower leveling roller are respectively fixedly connected with two telescopic rods. The outside of the two telescopic rods is respectively provided with two springs to achieve leveling.

[0014] Furthermore, the leveling mechanism also includes a screw and an upper leveling roller. The upper leveling roller is slidably connected to the upper side between the two sliding grooves. The top walls of the two sliding grooves are respectively rotatably connected to the screws. The threaded holes at the front and rear ends of the upper leveling roller are respectively threadedly connected to the adjacent screws to facilitate leveling.

[0015] Furthermore, the leveling mechanism also includes motor 2, pulley 1, a belt and pulley 2. A protective cover is provided at the upper end of the bracket. The upper end of the front screw is fixedly connected to pulley 1, and the upper end of the rear screw is fixedly connected to pulley 2. Pulley 1 and pulley 2 are connected by a belt transmission. Motor 2 is arranged at the upper end of the protective cover. The lower end of the output shaft of motor 2 is fixedly connected to the upper end of the front screw. The input end of motor 2 is electrically connected to the output end of the control switch group to provide leveling drive.

[0016] Furthermore, the four corners of the lower end of the workbench are respectively provided with supporting legs for easy support.

[0017] Furthermore, a traction roller 1 is rotatably connected to the middle portion of the front side surface of the support plate, and a traction roller 2 is rotatably connected to the right end of the front side surface of the support plate to facilitate traction.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the plastic bag unwinding machine has the following advantages:

[0019] 1. When it is necessary to produce plastic bags and unwind the plastic bag roll, first put the plastic bag roll on the unwind roller so that the rear end of the plastic bag roll contacts the front side of the baffle. Then insert the sliding column into the inside of the unwind roller, and the sliders are respectively slidably connected to the inside of the limiting grooves. When the rear end of the sliding column enters the inside of the unwind roller, under the pressure of the inner side wall of the sliding groove in the unwind roller, the insertion block contracts inside the chute. Then the sliding column continues to slide inside the unwind roller. When the insertion block slides to the insertion hole, the insertion block is released from the pressure, and under the resilience of the first expansion link and the first spring, the insertion block is ejected and inserted into the insertion hole, thereby fixedly clamping the plastic bag roll. When unwinding the plastic bag, the plastic bag roll is fixed more firmly, so that the plastic bag will not shift during unwinding, avoiding affecting the plastic bag unwinding effect.

[0020] 2. Then, by adjusting the control switch group, the first motor operates. The front end of the output shaft of the first motor drives the unwind roller to rotate, thereby driving the plastic bag roll to rotate. Pull the end of the plastic bag roll to the upper end of the lower flattening roller, then pass through the upper end of the lower flattening roller and connect to the transmission shaft. Then, by adjusting the control switch group, the second motor operates. The output shaft of the second motor drives the first pulley at the upper end of the front side screw rod to rotate. The rotation of the first pulley will drive the second pulley to rotate through belt transmission, thereby driving the screw rods at both ends to rotate respectively. The rotation of the screw rods will drive the upper flattening roller to move downward to flatten the plastic bag. The lower flattening roller, under the resilience of the second expansion link and the second spring, adapts to plastic bags of different thicknesses for flattening. When unwinding the plastic bag, the plastic bag is flattened to avoid wrinkles on the plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0023] Figure 3 is an enlarged structural diagram at A of the present utility model;

[0024] Figure 4 is an enlarged structural diagram at B of the present utility model.

[0025] In the figure: 1 workbench, 2 support plate, 3 first traction roller, 4 second traction roller, 5 bracket, 6 first motor, 7 unwind roller, 8 clamping mechanism, 801 insertion hole, 802 baffle, 803 limiting groove, 804 sliding column, 805 slider, 806 retaining ring, 807 chute, 808 first expansion link, 809 first spring, 810 sliding plate, 811 insertion block, 9 flattening mechanism, 91 second motor, 92 first pulley, 93 belt, 94 second pulley, 95 screw rod, 96 upper flattening roller, 97 lower flattening roller, 98 second expansion link, 99 second spring, 10 protective cover, 11 control switch group, 12 support leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figure 1-4 , this embodiment provides a technical solution: a plastic bag unwinder, including a workbench 1, a clamping mechanism 8 and a flattening mechanism 9;

[0028] Workbench 1: A support plate 2 is provided at the rear end of its upper surface. The upper end of the front side of the support plate 2 is rotatably connected to an unwinding roller 7. A bracket 5 is provided at the right end of the upper surface of the workbench 1. A control switch group 11 is provided at the left end of the upper surface of the workbench 1. The input end of the control switch group 11 is electrically connected to an external power source. A motor 6 is provided on the rear side of the support plate 2. The front end of the output shaft of the motor 6 is fixedly connected to the rear end of the unwinding roller 7. The input end of the motor 6 is electrically connected to the output end of the control switch group 11. Legs 12 are respectively provided at the four corners of the lower end of the workbench 1. The middle of the front side of the support plate 2 is rotatably connected to a first traction roller 3, and the right end of the front side of the support plate 2 is rotatably connected to a second traction roller 4;

[0029] Clamping mechanism 8: It includes a retaining piece 802, a limiting groove 803, a sliding column 804, a sliding block 805 and a retaining ring 806. The retaining piece 802 is fixedly sleeved on the outer wall of the unwinding roller 7. Limiting grooves 803 are respectively opened at the left and right ends on the front side of the unwinding roller 7. The sliding column 804 is slidably connected to the inside of the unwinding roller 7. Sliding blocks 805 are respectively provided on the left and right sides of the front end of the sliding column 804. The sliding blocks 805 are respectively slidably connected to the adjacent limiting grooves 803. The outer ends of the sliding blocks 805 are fixedly connected to the inner side wall of the retaining ring 806. The clamping mechanism 8 further includes an insertion hole 801, a sliding groove 807, a first telescopic rod 808, a first spring 809, a sliding plate 810 and an insertion block 811. Uniformly distributed insertion holes 801 are opened on the outer wall of the unwinding roller 7. A sliding groove 807 is opened at the rear end of the sliding column 804. A sliding plate 810 is slidably connected to the inside of the sliding groove 807. An insertion block 811 is fixedly connected to the left end of the sliding plate 810. The insertion block 811 is cooperatively installed with the insertion hole 801. Symmetrically arranged first telescopic rods 808 are fixedly connected between the right end of the sliding plate 810 and the left side wall of the sliding groove 807. The outer parts of the first telescopic rods 808 are respectively sleeved with first springs 809. When producing plastic bags, when unwinding the plastic bags, first, the plastic bag roll is sleeved on the unwinding roller 7, so that the rear end of the plastic bag roll contacts the front side of the retaining piece 802. Then, the sliding column 804 is inserted into the inside of the unwinding roller 7, so that the sliding blocks 805 are respectively slidably connected to the inside of the limiting grooves 803. When the rear end of the sliding column 804 enters the inside of the unwinding roller 7, under the pressure of the inner side wall of the sliding groove inside the unwinding roller 7, the insertion block 811 contracts inside the sliding groove 807. Then, the sliding column 804 continues to slide inside the unwinding roller 7. When the insertion block 811 slides to the insertion hole 801, the insertion block 811 is released from the pressure, and the insertion block 811 is pushed out by the first telescopic rod 808 and the first spring 809 to be inserted into the insertion hole 801, thereby fixedly clamping the plastic bag roll;

[0030] Leveling mechanism 9: It is arranged inside the bracket 5. The leveling mechanism 9 includes a lower leveling roller 97, a second telescopic rod 98, and a second spring 99. Sliding grooves are respectively formed on the inner side walls of the bracket 5. The lower leveling roller 97 is slidably connected below between the two sliding grooves. Second telescopic rods 98 are respectively fixedly connected between the bottom walls of the sliding grooves and the front and rear ends of the lower surface of the lower leveling roller 97. Second springs 99 are respectively sleeved outside the second telescopic rods 98. The leveling mechanism 9 further includes a lead screw 95 and an upper leveling roller 96. The upper leveling roller 96 is slidably connected above between the two sliding grooves. Lead screws 95 are respectively rotatably connected to the top walls of the two sliding grooves. Threaded holes at the front and rear ends of the upper leveling roller 96 are respectively threadedly connected to the adjacent lead screws 95. The leveling mechanism 9 further includes a second motor 91, a first pulley 92, a belt 93, and a second pulley 94. A protective cover 10 is provided at the upper end of the bracket 5. The upper end of the front lead screw 95 is fixedly connected to the first pulley 92. The upper end of the rear lead screw 95 is fixedly connected to the second pulley 94. The first pulley 92 and the second pulley 94 are driven by the belt 93. The second motor 91 is arranged at the upper end of the protective cover 10. The lower end of the output shaft of the second motor 91 is fixedly connected to the upper end of the front lead screw 95. The input end of the second motor 91 is electrically connected to the output end of the control switch group 11. Then, by adjusting the control switch group 11, the first motor 6 operates. The front end of the output shaft of the first motor 6 drives the unwinding roller 7 to rotate, thereby driving the plastic bag roll to rotate, pulling the end of the plastic bag roll to the upper end of the lower leveling roller 97, then passing through the upper end of the lower leveling roller 97, connecting the transmission shaft. Then, by adjusting the control switch group 11, the second motor 91 operates. The output shaft of the second motor 91 drives the first pulley 92 at the upper end of the front lead screw 95 to rotate. The rotation of the first pulley 92 will drive the second pulley 94 to rotate through the belt 93, thereby respectively driving the lead screws 95 at both ends to rotate. The rotation of the lead screws 95 will drive the upper leveling roller 96 to move downward to level the plastic bag. The lower leveling roller 97 adapts to plastic bags of different thicknesses for leveling under the resilience of the second telescopic rod 98 and the second spring 99.

[0031] The working principle of the plastic bag unwinding machine provided by the present invention is as follows: when the plastic bag needs to be produced and the plastic bag is unwound, the plastic bag roll is first put on the unwinding roller 7 so that the rear end of the plastic bag roll contacts the front side of the baffle 802, and then the slide post 804 is inserted into the interior of the unwinding roller 7, so that the sliders 805 are respectively slidably connected to the interior of the limiting groove 803. When the rear end of the slide post 804 enters the interior of the unwinding roller 7, the insert block 811 is contracted inside the slide groove 807 under the pressure of the inner side wall of the sliding groove inside the unwinding roller 7, and then the slide post 804 continues to slide inside the unwinding roller 7. When the insert block 811 slides to the insertion hole 801, the insert block 811 is released from the pressure, and the insert block 811 is pushed out and plugged into the insertion hole 801 under the rebound of the telescopic rod 1 808 and the spring 1 809. The plastic bag roll is then fixed and clamped, and then the control switch group 11 is adjusted to operate the motor 16. The front end of the output shaft of the motor 16 drives the unwinding roller 7 to rotate, thereby driving the plastic bag roll to rotate, pulling the end of the plastic bag roll to the upper end of the lower leveling roller 97, and then passing through the upper end of the lower leveling roller 97 to connect the transmission shaft, and then the control switch group 11 is adjusted to operate the motor 2 91. The output shaft of the motor 2 91 drives the pulley 1 92 at the upper end of the front screw rod 95 to rotate. The rotation of the pulley 1 92 will drive the pulley 2 94 to rotate through the belt 93, and then respectively drive the screw rods 95 at both ends to rotate. The rotation of the screw rod 95 will drive the upper leveling roller 96 to move downward to level the plastic bag. The lower leveling roller 97 adapts to plastic bags of different thicknesses and level them under the rebound of the telescopic rod 2 98 and the spring 2 99.

[0032] It is worth noting that, in the above embodiments, the motor 1 6 and the motor 2 91 are selected from V5-040130FC2A and 5I k12RGU-CF respectively. The control switch group 11 is provided with switch buttons corresponding to the motor 1 6 and the motor 2 91 for controlling their switching operation.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A plastic bag unwinding machine, characterized in that: It includes a workbench (1), a clamping mechanism (8) and a leveling mechanism (9); Workbench (1): At the rear end of its upper surface, there is a support plate (2). At the upper end of the front side of the support plate (2), a unwind roller (7) is rotatably connected. At the right end of the upper surface of the workbench (1), there is a bracket (5); Clamping mechanism (8): It includes a retaining piece (802), a limiting groove (803), a sliding column (804), a sliding block (805) and a retaining ring (806). The retaining piece (802) is fixedly sleeved on the outer wall of the unwind roller (7). Limiting grooves (803) are respectively opened at the left and right ends on the front side of the unwind roller (7). The sliding column (804) is slidably connected to the inside of the unwind roller (7). At the left and right sides of the front end of the sliding column (804), there are respectively sliding blocks (805). The sliding blocks (805) are respectively slidably connected to the adjacent limiting grooves (803). The outer ends of the sliding blocks (805) are fixedly connected to the inner side wall of the retaining ring (806); Leveling mechanism (9): It is arranged inside the bracket (5).

2. The plastic bag uncoiler according to claim 1, wherein: At the left end of the upper surface of the workbench (1), there is a control switch group (11). The input end of the control switch group (11) is electrically connected to an external power supply.

3. The plastic bag uncoiler according to claim 2, characterized in that: At the rear side of the support plate (2), there is a first motor (6). The front end of the output shaft of the first motor (6) is fixedly connected to the rear end of the unwind roller (7). The input end of the first motor (6) is electrically connected to the output end of the control switch group (11).

4. A plastic bag unwinding machine according to claim 2, characterized in that: The clamping mechanism (8) further includes a jack (801), a sliding groove (807), a first telescopic rod (808), a first spring (809), a sliding plate (810) and an inserting block (811). Uniformly distributed jacks (801) are opened on the outer wall of the unwind roller (7). A sliding groove (807) is opened at the rear end of the sliding column (804). A sliding plate (810) is slidably connected inside the sliding groove (807). The left end of the sliding plate (810) is fixedly connected to an inserting block (811). The inserting block (811) is cooperatively installed with the jack (801). Between the right end of the sliding plate (810) and the left side wall of the sliding groove (807), symmetric first telescopic rods (808) are fixedly connected front and back. The outer parts of the first telescopic rods (808) are respectively sleeved with first springs (809).

5. The plastic bag unwinder according to claim 2, characterized in that: The leveling mechanism (9) includes a lower leveling roller (97), a second telescopic rod (98) and a second spring (99). Sliding grooves are respectively opened on the inner side walls of the bracket (5). The lower leveling roller (97) is slidably connected below between the two sliding grooves. Between the bottom wall of the sliding groove and the front and back ends of the lower surface of the lower leveling roller (97), second telescopic rods (98) are respectively fixedly connected. The outer parts of the second telescopic rods (98) are respectively sleeved with second springs (99).

6. The plastic bag unwinder according to claim 5, wherein: The leveling mechanism (9) further includes a lead screw (95) and an upper leveling roller (96). The upper leveling roller (96) is slidably connected above between the two sliding grooves. Lead screws (95) are respectively rotatably connected to the top walls of the two sliding grooves. The threaded holes at the front and back ends of the upper leveling roller (96) are respectively threadedly connected to the adjacent lead screws (95).

7. A plastic bag unwinding machine according to claim 5, characterized in that: The leveling mechanism (9) further comprises a second motor (91), a first pulley (92), a belt (93) and a second pulley (94); a protective cover (10) is provided at the upper end of the bracket (5); the upper end of the front screw rod (95) is fixedly connected to the first pulley (92); the upper end of the rear screw rod (95) is fixedly connected to the second pulley (94); the first pulley (92) and the second pulley (94) are connected by a belt (93); the second motor (91) is arranged at the upper end of the protective cover (10); the lower end of the output shaft of the second motor (91) is fixedly connected to the upper end of the front screw rod (95); the input end of the second motor (91) is electrically connected to the output end of the control switch group (11).

8. A plastic bag unwinding machine according to claim 1, characterized in that: Support legs (12) are respectively provided at the four corners of the lower end of the workbench (1).

9. The plastic bag unwinder according to claim 1, wherein: The middle portion of the front side surface of the support plate (2) is rotatably connected to a traction roller 1 (3), and the right end of the front side surface of the support plate (2) is rotatably connected to a traction roller 2 (4).

Images