Macromolecular plastic bag making device

Abstract

The utility model relates to the technical field of plastic bag making devices, and provides a macromolecule plastic bag making device which comprises a base, a frame rod is arranged on the base, a cutting mechanism is arranged on the side, away from the frame rod, of the top of the base, a supporting frame is arranged between the frame rod and the cutting mechanism, and the supporting frame is connected with the top of the base in a sliding mode. A fixing assembly used for fixing the supporting frame is arranged on the base, a tensioning roller is arranged in the supporting frame and rotationally connected with the inner walls of the two sides of the supporting frame, and an adjusting mechanism used for adjusting the height of the tensioning roller is arranged on the supporting frame. According to the technical scheme, the quality and appearance of the finished plastic bag are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag making devices, and in particular to a polymer plastic bag making device. Background Art

[0002] Polymer plastic bag making devices are widely used in the food industry to produce food packaging bags, such as food preservation bags, freezer bags, etc., to ensure the hygiene and safety of food. Secondly, the medical industry is also an important application field for it, used to manufacture plastic bags for medical purposes, such as infusion bags, medical waste bags, etc., to ensure the safety and hygiene of medical equipment and items. In addition, polymer plastic bag making devices are also used to produce packaging bags for general items, such as shopping bags, mailing bags, etc., playing an important role in business and daily life, providing convenience for the packaging and transportation of items.

[0003] An existing bag making device for plastic processing includes a frame, a frame plate, a frame rod, a plastic film limiting and seaming mechanism, a separation mechanism and a transverse cutting mechanism, etc.; a pair of frame plates are fixedly connected to the frame, the frame plates are rotatably connected to the frame rods, the frame is fixedly connected to the plastic film limiting and seaming mechanism, the top of the frame is fixedly connected to the separation mechanism, and one side of the frame is fixedly connected to the transverse cutting mechanism.

[0004] Although the above-mentioned related technologies solve the problem of uneven cutting, due to the lack of a device to adjust the tension of the plastic bag between the rack and the transverse cutting, the plastic bag is prone to wrinkles during transportation, resulting in an uneven surface during the cutting process, which may make the blade of the cutting mechanism unable to completely fit the surface of the plastic bag, resulting in uneven and irregular cuts, affecting the quality and appearance of the finished plastic bag. Utility Model Content

[0005] The utility model provides a polymer plastic bag making device, which improves the quality and appearance of the finished plastic bags.

[0006] The technical solution of the utility model is as follows: a polymer plastic bag making device, comprising a base, a frame rod is provided on the base, a cutting mechanism is provided on the side of the top of the base away from the frame rod, a support frame is provided between the frame rod and the cutting mechanism, and the support frame is slidably connected to the top of the base, a fixing component for fixing the support frame is provided on the base, a tensioning roller is provided in the support frame, and the tensioning roller is rotatably connected to the inner walls on both sides of the support frame, and an adjustment mechanism for adjusting the height of the tensioning roller is provided on the support frame.

[0007] Further, the fixing component includes a fixing screw and a fixing nut. Both sides of the top of the base are provided with sliding grooves, and both bottom sides of the support frame are provided with sliding blocks. The sliding blocks are slidably connected to the inner walls of the sliding grooves. A fixing groove is provided at the top of the sliding groove and is communicated with the inside of the sliding groove. The fixing screw is arranged on the sliding block and fixedly connected to the sliding block. One end of the fixing screw extends outside the fixing groove, and the fixing screw is slidably connected to the inner wall of the fixing groove. The fixing nut is threadedly connected to the fixing screw and abuts against the top of the base.

[0008] Further, the adjusting mechanism includes a rotating shaft, an adjusting screw, an adjusting block, and a servo motor. Adjusting grooves are provided on both sides of the support frame. The rotating shaft is arranged on the top of the support frame and is rotatably connected to the inside of the support frame. The adjusting screw is arranged in the adjusting groove and is rotatably connected to the inner wall of the adjusting groove. The adjusting block is threadedly connected to the adjusting screw and is slidably connected to the inner wall of the adjusting groove. The tensioning roller is rotatably connected to the adjusting block. The rotating shaft is connected to the adjusting screw through a bevel gear set. One end of the rotating shaft extends outside the support frame, and the output end of the servo motor is connected to the side of the rotating shaft away from the support frame.

[0009] Further, an installation groove is provided on the side of the rotating shaft close to the servo motor. The output end of the servo motor is slidably connected to the inside of the installation groove. The cross-sections of the installation groove and the output end of the servo motor are both semi-circular structures. A through hole is provided on the output end of the servo motor. Fixing holes corresponding to the through hole are provided on both sides of the installation groove. Bolts are threadedly connected in the fixing holes. A fixing plate is provided on the side of the rotating shaft close to the support frame.

[0010] Further, guide blocks are provided on both sides of the adjusting groove, and guide grooves are provided on both sides of the adjusting block. The guide blocks are slidably connected to the inner walls of the guide grooves.

[0011] Further, a turntable is fixedly connected to the side of the rotating shaft away from the servo motor. A handle is fixedly connected to the turntable. A rubber sleeve is provided on the handle, and anti-slip patterns are provided on the rubber sleeve.

[0012] Further, a ratchet is fixedly connected to the side of the rotating shaft away from the support frame. A pawl is rotatably connected to the side of the support frame close to the ratchet, and the pawl is engaged with the ratchet. Pin holes are provided on both sides of the support frame opposite to the pawl, and pins are slidably connected in the pin holes.

[0013] Further, a rotating groove is provided on the side of the adjusting block close to the tensioning roller. A rolling bearing is provided in the rotating groove. The tensioning roller is fixedly connected to the inner ring of the rolling bearing.

[0014] The working principle and beneficial effects of the present utility model are as follows:

[0015] The utility model can ensure stable tension during the transportation of plastic plastic bags through a support frame, a fixing component, a tensioning roller, and an adjusting mechanism, avoiding wrinkles during transportation, thus keeping it flat when passing through a cutting mechanism, reducing the possibility of plastic bag deformation and distortion, and improving the quality and appearance of the finished plastic bags. The provided adjusting mechanism enables the utility model to adapt to plastic tapes of different models, improving the flexibility and application range of the bag-making device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0017] Figure 1 Structural schematic of the present utility model Figure 1 ;

[0018] Figure 2 is Figure 1 an enlarged schematic view of part A of

[0019] Figure 3 is Figure 2 a partial sectional schematic view of

[0020] Figure 4 Structural schematic of the present utility model Figure 2 ;

[0021] Figure 5 is Figure 4 an enlarged schematic view of part D in

[0022] Figure 6 is Figure 5 a disassembled structural schematic view of

[0023] Figure 7 Partial structural sectional schematic view of the present utility model

[0024] Figure 8 is Figure 7 an enlarged schematic view of part B of

[0025] Figure 9 is Figure 7 an enlarged schematic view of part C of

[0026] In the figure: 1. Base; 101. Support rod; 102. Cutting mechanism; 2. Support frame; 201. Tensioning roller; 202. Fixed screw; 203. Fixed nut; 204. Chute; 205. Slide block; 206. Fixed groove; 3. Rotating shaft; 301. Adjusting screw; 302. Adjusting block; 303. Adjusting groove; 304. First bevel gear; 305. Second bevel gear; 306. Guide block; 307. Guide groove; 4. Turntable; 401. Handle; 402. Rubber sleeve; 403. Ratchet; 404. Pawl; 405. Rotating groove; 406. Rolling bearing; 5. Servo motor; 501. Mounting groove; 502. Through hole; 503. Fixed hole; 504. Bolt; 505. Fixed plate; 6. Pin hole; 601. Plug. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028] Refer to Figures 1-9 , a plastic bag making device for high molecular plastics, including a base 1, a support rod 101 is provided on the base 1, and a cutting mechanism 102 is provided on one side of the top of the base 1 away from the support rod 101. In this application, the cutting mechanism 102 and other devices are all products that can be directly purchased on the market, and their working principles and connection methods are all well-known prior arts to those skilled in the art, so they will not be elaborated here. A support frame 2 is provided between the support rod 101 and the cutting mechanism 102, and the support frame 2 is slidably connected to the top of the base 1. A fixing component for fixing the support frame 2 is provided on the base 1. A tensioning roller 201 is provided in the support frame 2, and the tensioning roller 201 is rotatably connected to the inner walls on both sides of the support frame 2. An adjusting mechanism for adjusting the height of the tensioning roller 201 is provided on the support frame 2.

[0029] Through the support frame 2, the fixing component, the tensioning roller 201, and the adjusting mechanism, it is possible to ensure a stable tension during the transportation of plastic bags, avoid wrinkles during transportation, so that it remains flat when passing through the cutting mechanism 102, reduce the possibility of plastic bag deformation and distortion, and thus improve the quality and appearance of the finished plastic bags. The provided adjusting mechanism enables the present invention to adapt to plastic tapes of different models, improving the flexibility and application range of the bag making device.

[0030] Specifically, the fixing component includes a fixing screw 202 and a fixing nut 203. Both sides of the top of the base 1 are provided with sliding grooves 204. Both bottom sides of the support frame 2 are provided with sliding blocks 205. The sliding blocks 205 are slidably connected to the inner walls of the sliding grooves 204. The top of the sliding groove 204 is provided with a fixing groove 206, and the fixing groove 206 is internally connected to the sliding groove 204. The fixing screw 202 is arranged on the sliding block 205 and fixedly connected to the sliding block 205. One end of the fixing screw 202 extends outside the fixing groove 206, and the fixing screw 202 is slidably connected to the inner wall of the fixing groove 206. The width of the sliding groove 204 is greater than the diameter of the fixing screw 202, so that the fixing screw 202 can move within the sliding groove 204. The fixing nut 203 is threadedly connected to the fixing screw 202, and the fixing nut 203 abuts against the top of the base 1.

[0031] When the staff needs to adjust the tension of the plastic belt, first use a tool to loosen the fixing nut 203. Then, the staff can move the support frame 2 to adjust the tension force of the tension roller 201 on the plastic belt. When the appropriate tension force is adjusted, the staff can use a tool to tighten the fixing nut 203. Utilizing the principle of friction, the support frame 2 is fixed on the base 1. A gasket can be provided at the bottom of the fixing nut 203 to increase the contact area between the nut and the base 1, thereby improving the fixing effect. The fixing component in this example can meet the adjustment requirements of the tension roller 201 at any position, improving the applicable range of the bag-making device. At the same time, because the threaded connection has self-locking property, it can ensure that under the action of vibration, impact or other external forces, the fixing nut 203 will not loosen by itself, which improves the stability and reliability of the support frame 2.

[0032] Furthermore, the adjusting mechanism includes a rotating shaft 3, an adjusting screw 301, an adjusting block 302, and a servo motor 5. Adjusting grooves 303 are provided on both sides of the support frame 2. The rotating shaft 3 is arranged on the top of the support frame 2 and is rotatably connected to the inside of the support frame 2. The adjusting screw 301 is arranged in the adjusting groove 303 and is rotatably connected to the inner wall of the adjusting groove 303. The adjusting block 302 is threadedly connected to the adjusting screw 301 and is slidably connected to the inner wall of the adjusting groove 303. The adjusting block 302 and the cross-section of the adjusting groove 303 are both square structures. The square-structured adjusting block 302 can prevent the adjusting block 302 from rotating when the adjusting screw 301 rotates, restricting the radial freedom of the adjusting block 302 and enabling the adjusting block 302 to only move up and down along the adjusting groove 303, improving the stability of the movement of the adjusting block 302. The tensioning roller 201 is rotatably connected to the adjusting block 302. The rotating shaft 3 is connected to the adjusting screw 301 through a bevel gear set. One end of the rotating shaft 3 extends outside the support frame 2. A rotating groove 405 is provided on the side of the adjusting block 302 close to the tensioning roller 201. A rolling bearing 406 is provided in the rotating groove 405. The tensioning roller 201 is fixedly connected to the inner ring of the rolling bearing 406. The tensioning roller 201 can be fixedly connected to the inner ring of the rolling bearing 406 through AB glue, which is a well-known prior art to those skilled in the art and will not be elaborated here. By providing the rolling bearing 406, the friction between the tensioning roller 201 and the adjusting block 302 can be reduced, thereby increasing the service life of the tensioning roller 201 and the adjusting block 302. The output end of the servo motor 5 is connected to the side of the rotating shaft 3 away from the support frame 2.

[0033] The bevel gear set includes a first bevel gear 304 and a second bevel gear 305. The first bevel gear 304 is arranged on the rotating shaft 3 and is fixedly connected to the rotating shaft 3. The second bevel gear 305 is arranged on the adjusting screw 301 and is fixedly connected to the adjusting screw 301, and the first bevel gear 304 meshes with the second bevel gear 305.

[0034] When the staff needs to adjust the height of the tensioning roller 201, the servo motor 5 is started. The servo motor 5 drives the rotating shaft 3 to rotate. The rotating shaft 3 drives the first bevel gear 304 to rotate. At the same time, the first bevel gear 304 drives the second bevel gear 305 to rotate. The second bevel gear 305 drives the adjusting screw 301 to rotate, so that the tensioning roller 201 on the adjusting block 302 moves.

[0035] In this embodiment, in order to prevent the adjustment block 302 from shifting or misaligning during movement, guide blocks 306 are provided on both sides of the adjustment groove 303, and guide grooves 307 are provided on both sides of the adjustment block 302. The guide blocks 306 are slidably connected to the inner walls of the guide grooves 307. By providing the adjustment block 302 and the adjustment groove 303, it is possible to effectively prevent the components from being misaligned or displaced during movement or operation, and ensure that the adjustment block 302 is always maintained in the correct position and direction, improving the stability of the movement of the adjustment block 302.

[0036] Under long-term use, if the servo motor 5 fails, the staff can manually adjust the height of the tensioning roller 201. In order to be able to adjust the height of the tensioning roller 201 during maintenance, in this embodiment, an installation groove is provided on one side of the rotating shaft 3 close to the servo motor 5. The output end of the servo motor 5 is slidably connected to the inside of the installation groove 501. The cross-sections of the installation groove and the output end of the servo motor 5 are both semi-circular structures. A through hole 502 is provided on the output end of the servo motor 5, and fixing holes 503 corresponding to the through hole 502 are provided on both sides of the installation groove 501. A bolt 504 is threadedly connected in the fixing hole 503, and a fixing plate 505 is provided on one side of the rotating shaft 3 close to the support frame.

[0037] Designing the cross-sections of the installation groove 501 and the output end of the servo motor 5 into semi-circular structures can help the staff quickly locate the output end of the rotating shaft 3 and the servo motor 5, thereby improving the installation efficiency of the staff. At the same time, the semi-circular installation groove 501 can provide a larger contact area, making the connection between the rotating shaft 3 and the output end of the servo motor 5 firmer and more stable, ensuring the stability of the operation of the servo motor 5. And the provided bolt 504 can connect the output end of the servo motor 5 to the rotating shaft. The bolt 504 connection can effectively reduce loosening and friction at the connection, ensuring the stability and efficiency of the operation of the rotating shaft 3 (it should be noted here that a threaded section can also be provided in the through hole 502 to improve the connection stability between the output end of the servo motor 5 and the rotating shaft 3). Secondly, the bolt 504 connection can make the servo motor 5 and the rotating shaft detachable, facilitating maintenance and replacement. Setting the fixing plate 505 facilitates the staff to fix the rotating shaft 3 when removing the bolt 504, preventing the rotating shaft 3 from rotating when the bolt 504 is screwed, thereby facilitating the staff to disassemble and improving the efficiency of disassembling the servo motor 5.

[0038] In this embodiment, in order to facilitate the staff to rotate the rotating shaft 3, a turntable 4 is fixedly connected to the side of the rotating shaft 3 away from the servo motor 5. A handle 401 is fixedly connected to the turntable 4. A rubber sleeve 402 is provided on the handle 401. Anti-slip patterns are provided on the rubber sleeve 402. The turntable 4 can help the staff obtain a greater torque. The provided handle 401 provides a point of application for the staff to apply force, facilitating the staff to rotate the turntable 4. The rubber sleeve 402 provides a soft and comfortable gripping surface, enabling the staff to firmly grasp the handle 401. The anti-slip patterns increase the comfort of the staff's grip. When the staff rotates the rotating shaft 3 through the handle 401, the rotating shaft 3 will drive the first bevel gear 304 to rotate. At the same time, the first bevel gear 304 will drive the second bevel gear 305 to rotate, and the second bevel gear 305 will drive the adjusting screw 301 to rotate, so that the tension roller 201 on the adjusting block 302 moves.

[0039] At the same time, in order to improve the self-locking property of the adjusting mechanism, a ratchet 403 is fixedly connected to the side of the rotating shaft 3 away from the support frame 2. A ratchet pawl 404 is rotatably connected to the side of the support frame 2 close to the ratchet 403, and the ratchet pawl 404 meshes with the ratchet 403. Pin holes 6 are provided on both sides of the support frame 2 opposite to the ratchet pawl 404. A pin 601 is slidably connected in the pin hole 6. When the staff does not need to use it, the pin 601 can be inserted into the pin hole 6 to fix the position of the ratchet pawl 404 and prevent the ratchet pawl 404 from meshing with the ratchet 403. By providing the ratchet 403 and the ratchet pawl 404, it is possible to prevent the adjusting mechanism from gradually loosening due to the working vibration of the bag-making device, thereby improving the stability of the tension roller 201 during operation.

[0040] When the servo motor 5 is being repaired and the staff needs to adjust the tension of the plastic belt, first, one hand fixes the rotating shaft 3 through the fixing plate 505, and then the other hand uses a tool to screw out the bolt 504. When the bolt 504 disengages from the fixing hole 503, the staff can separate the servo motor 5 from the rotating shaft. When separating, the staff holds the handle 401 and rotates it counterclockwise. Since the ratchet pawl 404 and the ratchet 403 can only mesh unidirectionally, the rotating shaft 3 will rotate counterclockwise. The first bevel gear 304 will drive the second bevel gear 305 to rotate counterclockwise, and the adjusting screw 301 will rotate counterclockwise, thereby driving the adjusting block 302 to move downward to adjust the tension. When the staff needs to move the support frame 2 left and right, first use a tool to loosen the fixing nut 203 of the bolt 504. Then, the staff can move the support frame 2 to adjust the tension of the tension roller 201 on the plastic belt. When the appropriate tension is adjusted, the staff can use a tool to tighten the fixing nut 203 and fix the support frame 2 on the base 1 using the principle of friction.

[0041] When the staff wants to move the adjusting block 302 upward, first, lift the pawl 404 with one hand and fix the pawl 404 through the bolt 601 to prevent the pawl 404 from engaging with the ratchet wheel 403. Then, rotate the handle 401 clockwise, and the rotating shaft 3 will rotate clockwise. At the same time, the first bevel gear 304 will drive the second bevel gear 305 to rotate clockwise, and the adjusting screw 301 will rotate clockwise, thereby driving the adjusting block 302 to move upward, and further realizing the adjustment of the tension (it should be noted here that when driven by the servo motor 5, the pawl 404 is fixed by the bolt 601 and thus will not engage with the ratchet wheel 403).

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A polymer plastic bag making device, comprising a base (1), a frame rod (101) being provided on the base (1), a cutting mechanism (102) being provided on a side of the top of the base (1) away from the frame rod (101), characterized in that: A support frame (2) is provided between the frame rod (101) and the cutting mechanism (102), and the support frame (2) is slidably connected to the top of the base (1), a fixing component for fixing the support frame (2) is provided on the base (1), a tensioning roller (201) is provided inside the support frame (2), and the tensioning roller (201) is rotatably connected to the inner walls on both sides of the support frame (2), and an adjustment mechanism for adjusting the height of the tensioning roller (201) is provided on the support frame (2); The adjustment mechanism comprises a rotating shaft (3), an adjusting screw (301), an adjusting block (302), and a servo motor (5); both sides of the support frame (2) are provided with an adjusting groove (303); the rotating shaft (3) is arranged at the top of the support frame (2) and is rotatably connected to the inside of the support frame (2); the adjusting screw (301) is arranged in the adjusting groove (303) and is rotatably connected to the inner wall of the adjusting groove (303); the adjusting block (302) is threadedly connected to the adjusting screw (301) and is slidably connected to the inner wall of the adjusting groove (303); the tensioning roller (201) is rotatably connected to the adjusting block (302); the rotating shaft (3) is connected to the adjusting screw (301) via a bevel gear set; one end of the rotating shaft (3) extends to the outside of the support frame (2); and the output end of the servo motor (5) is connected to a side of the rotating shaft (3) away from the support frame (2).

2. A polymer plastic bag making device according to claim 1, characterized in that: The fixing assembly comprises a fixing screw (202) and a fixing nut (203). Slide grooves (204) are provided on both sides of the top of the base (1). Slide blocks (205) are provided on the bottom of both sides of the support frame (2). The slide blocks (205) are slidably connected to the inner wall of the slide groove (204). A fixing groove (206) is provided on the top of the slide groove (204), and the fixing groove (206) is communicated with the inside of the slide groove (204). The fixing screw (202) is arranged on the slide block (205) and is fixedly connected to the slide block (205). One end of the fixing screw (202) extends to the outside of the fixing groove (206), and the fixing screw (202) is slidably connected to the inner wall of the fixing groove (206). The fixing nut (203) is threadedly connected to the fixing screw (202), and the fixing nut (203) abuts against the top of the base (1).

3. A polymer plastic bag making device according to claim 1, characterized in that: A mounting groove (501) is provided on a side of the rotating shaft (3) close to the servo motor (5); an output end of the servo motor (5) is slidably connected to the inside of the mounting groove (501); cross sections of the mounting groove (501) and the output end of the servo motor (5) are both semicircular structures; a through hole (502) is provided on the output end of the servo motor (5); fixing holes (503) corresponding to the through hole (502) are provided on both sides of the mounting groove (501); bolts (504) are connected to the inner threads of the fixing holes (503); and a fixing plate (505) is provided on a side of the rotating shaft (3) close to the support frame (2).

4. A polymer plastic bag making device according to claim 1, characterized in that: Guide blocks (306) are provided on both sides of the adjustment groove (303), guide grooves (307) are provided on both sides of the adjustment block (302), and the guide blocks (306) are slidably connected to the inner wall of the guide groove (307).

5. The polymer plastic bag making device according to claim 1, characterized in that: A rotating disk (4) is fixedly connected to the side of the rotating shaft (3) away from the servo motor (5), a handle (401) is fixedly connected to the rotating disk (4), a rubber sleeve (402) is provided on the handle (401), and an anti-slip pattern is provided on the rubber sleeve (402).

6. A polymer plastic bag making device according to claim 5, characterized in that: A ratchet (403) is fixedly connected to the side of the rotating shaft (3) away from the support frame (2), and a pawl (404) is rotatably connected to the side of the support frame (2) close to the ratchet (403), and the pawl (404) is meshed with the ratchet (403). A pin hole (6) is provided on the side of the support frame (2) opposite to the pawl (404), and a latch (601) is slidably connected in the pin hole (6).

7. The polymer plastic bag making device according to claim 1, characterized in that: A rotation groove (405) is provided on one side of the adjustment block (302) close to the tensioning roller (201), a rolling bearing (406) is provided in the rotation groove (405), and the tensioning roller (201) is fixedly connected to the inner ring of the rolling bearing (406).

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