Bag cutting device for food plastic packaging bags

Abstract

The utility model discloses a plastic food packaging bag cutting device, which relates to the technical field of plastic food packaging, and comprises a workbench, a bidirectional threaded rod, a fixed tensioning assembly and a driving device, the bidirectional threaded rod is movably connected to the bottom of the workbench, one end of the bidirectional threaded rod is fixedly connected with a first gear, and the other end of the bidirectional threaded rod is fixedly connected with a second gear. The driving device comprises a driving motor and a second gear. The fixed tensioning assembly comprises a first movable plate, a movable groove, a clamping plate and a reset spring. A reset spring drives a clamping plate to fix a packaging bag, then a driving motor is started to drive a first gear to drive a second gear to rotate, and then a two-way threaded rod rotates to drive a first movable plate to move relatively under the action that a first threaded groove is in threaded engagement with the outer walls of the two ends of the two-way threaded rod; and therefore, the purpose of tensioning the packaging bag is achieved, and the situation that the packaging bag is driven by a cutting knife to be wrinkled during cutting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of food plastic packaging, in particular to a bag cutting device for food plastic packaging bags. Background Art

[0002] Food packaging bags are a type of packaging design. In order to facilitate the preservation and storage of food in life, product packaging bags are produced. In the production process of food-grade plastic packaging bags, heat sealing, cutting and other production processes are required. The cutting process requires a cutting device, and the existing food plastic packaging bag cutting device cannot fix and tighten the food packaging bag well during use, resulting in wrinkles caused by the cutting knife during cutting, and the cutting accuracy cannot be guaranteed, affecting subsequent use. Summary of the invention

[0003] The utility model provides a bag cutting device for food plastic packaging bags to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A bag cutting device for food plastic packaging bags comprises a workbench, a bidirectional threaded rod, a fixed tensioning assembly, and a driving device. The bidirectional threaded rod is movably connected to the bottom of the workbench, one end of the bidirectional threaded rod is fixedly connected to a first gear, the driving device comprises a driving motor and a second gear, the fixed tensioning assembly comprises a first movable plate, a movable groove, a clamping plate, and a reset spring, the first movable plate is movably connected to both ends of the workbench, the clamping plate is movably connected to the inside of the movable groove, and the reset spring is fixedly connected to the upper end of the clamping plate.

[0006] A further improvement of the technical solution of the utility model is that: the driving motor is fixedly connected to one end of the workbench, the second gear is fixedly connected to the output shaft of the driving motor through a coupling, and the first gear and the second gear are meshed.

[0007] By adopting the above technical solution, the driving motor in the solution can drive the first gear to drive the second gear to rotate, thereby causing the bidirectional threaded rod to rotate.

[0008] A further improvement of the technical solution of the utility model is that: limiting grooves are provided at both ends of the workbench, limiting blocks are fixedly connected to both ends of the first movable plate, and the limiting blocks are slidably connected to the inside of the limiting grooves.

[0009] By adopting the above technical solution, the limiting groove and the limiting block in the solution can play a limiting role, so that the first movable plate can perform linear sliding motion.

[0010] A further improvement of the technical solution of the utility model is that a first thread groove is opened at the bottom of the first movable plate, the first thread groove is threadedly engaged with the outer wall of the bidirectional threaded rod, the first movable plate is movably connected to the two ends of the bidirectional threaded rod, the bottom of the workbench is fixedly connected to a support plate, and the bidirectional threaded rod is fixedly connected to the inside of the support plate through a bearing.

[0011] By adopting the above technical solution, when the bidirectional threaded rod in the solution rotates, it can drive the first movable plate to make relative movement under the action of the first thread groove thread engaging with the outer walls at both ends of the bidirectional threaded rod, thereby achieving the purpose of tightening the packaging bag so that it will not be driven by the cutting knife and cause wrinkles during cutting.

[0012] A further improvement of the technical solution of the utility model is that: both ends of the upper surface of the workbench are fixedly connected with fixed plates, the interior of the fixed plate is movably connected with a second movable plate, and the second movable plate includes a cutting knife.

[0013] A further improvement of the technical solution of the utility model is that a guide groove is provided inside the fixed plate, and guide blocks are fixedly connected to both ends of the second movable plate, and the guide blocks are slidably connected to the inside of the guide groove.

[0014] By adopting the above technical solution, the guide groove and the guide block in the solution can play a limiting role, so that the second movable plate can perform linear sliding motion.

[0015] A further improvement of the technical solution of the utility model is that: the front and rear ends of one end of the fixed plate are fixedly connected to a fixed block, the interior of the fixed block is movably connected to a driving threaded rod through a bearing, and a second thread groove is opened at one end of the second movable plate, and the second thread groove is threadedly engaged with the outer wall of the driving threaded rod.

[0016] By adopting the above technical solution, the driving threaded rod in the solution can rotate to drive the second movable plate to perform linear sliding motion under the action of the second thread groove threadedly engaging with the outer wall of the driving threaded rod, thereby adjusting the position of the second movable plate and the cutting knife.

[0017] A further improvement of the technical solution of the utility model is that a slide groove is provided inside the second movable plate, two ends of the cutting knife are fixedly connected with sliders, and the cutting knife is slidably connected to the inside of the slide groove through the sliders.

[0018] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0019] The utility model provides a bag cutting device for food plastic packaging bags, which fixes the packaging bags by driving a clamping plate through a reset spring, and then starts a driving motor to drive a first gear to drive a second gear to rotate, thereby causing a bidirectional threaded rod to rotate and drive a first movable plate to make relative movement under the action of the first thread groove thread meshing with the outer walls at both ends of the bidirectional threaded rod, thereby tightening the packaging bag so that the packaging bag will not be driven by a cutting knife to cause wrinkles during cutting.

[0020] The utility model provides a bag cutting device for food plastic packaging bags, which drives a second movable plate to perform linear sliding motion under the action of a second thread groove threadedly meshing with an outer wall of the driving thread rod by rotating a driving thread rod, thereby adjusting the position of the second movable plate and a cutting knife, thereby facilitating cutting at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a bag cutting device for a food plastic packaging bag according to an embodiment of the utility model;

[0022] Figure 2 This is a structural diagram of a workbench of a food plastic packaging bag cutting device according to an embodiment of the utility model;

[0023] Figure 3 It is a fixing and tightening assembly of a bag cutting device for a food plastic packaging bag according to an embodiment of the utility model;

[0024] Figure 4 The invention is a bag cutting device for a food plastic packaging bag according to an embodiment of the utility model. Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 This is a structural diagram of a workbench of a food plastic packaging bag cutting device according to an embodiment of the utility model;

[0026] Figure 6 The utility model is a structural diagram of a movable plate of a bag cutting device for a plastic food packaging bag according to an embodiment of the utility model.

[0027] In the figure: 1. workbench; 101. support plate; 102. limit groove; 103. fixed plate; 104. guide groove; 105. fixed block; 106. driving threaded rod; 2. bidirectional threaded rod; 201. first gear; 3. fixed tensioning assembly; 301. first movable plate; 302. first thread groove; 303. limit block; 304. movable groove; 305. clamping plate; 306. reset spring; 4. driving device; 401. driving motor; 402. second gear; 5. second movable plate; 501. guide block; 502. second thread groove; 503. slide groove; 504. cutting knife. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The present invention is further described in detail below in conjunction with the embodiments:

[0030] Example 1

[0031] like Figure 1-6 As shown, the utility model provides a bag cutting device for food plastic packaging bags, including a workbench 1, a bidirectional threaded rod 2, a fixed tensioning assembly 3, and a driving device 4. The bidirectional threaded rod 2 is movably connected to the bottom of the workbench 1, one end of the bidirectional threaded rod 2 is fixedly connected to a first gear 201, the driving device 4 includes a driving motor 401 and a second gear 402, the fixed tensioning assembly 3 includes a first movable plate 301, a movable groove 304, a clamping plate 305, and a reset spring 306, the first movable plate 301 is movably connected to both ends of the workbench 1, the clamping plate 305 is movably connected to the inside of the movable groove 304, and the reset spring 306 is fixedly connected to the upper end of the clamping plate 305.

[0032] In this embodiment, the packaging bag is fixed by driving the clamping plate 305 through the reset spring 306, and then the driving motor 401 is started to drive the first gear 201 to drive the second gear 402 to rotate, so that the bidirectional threaded rod 2 rotates and drives the first movable plate 301 to make relative movement under the action of the first thread groove 302 threadedly engaged with the outer walls at both ends of the bidirectional threaded rod 2, thereby achieving the purpose of tightening the packaging bag so that it will not be driven by the cutting knife 504 during cutting and cause wrinkles.

[0033] Example 2

[0034] like Figure 1-6As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the driving motor 401 is fixedly connected to one end of the workbench 1, the second gear 402 is fixedly connected to the output shaft of the driving motor 401 through a coupling, the first gear 201 and the second gear 402 are meshed with each other, and limiting grooves 102 are provided at both ends of the workbench 1, and limiting blocks 303 are fixedly connected to both ends of the first movable plate 301, and the limiting blocks 303 are slidably connected to the inside of the limiting groove 102, and a first thread groove 302 is provided at the bottom of the first movable plate 301, and the first thread groove 302 is threadedly meshed with the outer wall of the bidirectional threaded rod 2, and the first movable plate 301 is movably connected to the two ends of the bidirectional threaded rod 2, and the bottom of the workbench 1 is fixedly connected to the support plate 101, and the bidirectional threaded rod 2 is fixedly connected to the inside of the support plate 101 through a bearing.

[0035] In this embodiment, the driving motor 401 can drive the first gear 201 to drive the second gear 402 to rotate, thereby causing the bidirectional threaded rod 2 to rotate. The limit groove 102 and the limit block 303 can play a limiting role, so that the first movable plate 301 can perform linear sliding motion. When the bidirectional threaded rod 2 rotates, it can drive the first movable plate 301 to perform relative motion under the action of the first thread groove 302 threadedly engaging with the outer walls at both ends of the bidirectional threaded rod 2, thereby achieving the purpose of tightening the packaging bag so that it will not be driven by the cutting knife 504 during cutting, thereby causing wrinkles.

[0036] Example 3

[0037] like Figure 1-6 As shown, on the basis of Example 1 and Example 2, the utility model provides a technical solution: preferably, fixed plates 103 are fixedly connected at both ends of the upper surface of the workbench 1, and a second movable plate 5 is movably connected inside the fixed plate 103, and the second movable plate 5 includes a cutting knife 504. A guide groove 104 is provided inside the fixed plate 103, and guide blocks 501 are fixedly connected at both ends of the second movable plate 5, and the guide block 501 is slidably connected to the inside of the guide groove 104. The front and rear ends of one end of the fixed plate 103 are fixedly connected to a fixed block 105, and the inside of the fixed block 105 is movably connected to a driving threaded rod 106 through a bearing. A second thread groove 502 is provided at one end of the second movable plate 5, and the second thread groove 502 is threadedly engaged with the outer wall of the driving threaded rod 106. A slide groove 503 is provided inside the second movable plate 5, and sliders are fixedly connected at both ends of the cutting knife 504, and the cutting knife 504 is slidably connected to the inside of the slide groove 503 through the slider.

[0038] In this embodiment, the guide groove 104 and the guide block 501 can play a limiting role, so that the second movable plate 5 can make a linear sliding motion. The driving threaded rod 106 can rotate to drive the second movable plate 5 to make a linear sliding motion under the action of the second threaded groove 502 threadedly engaged with the outer wall of the driving threaded rod 106, thereby adjusting the position of the second movable plate 5 and the cutting knife 504.

[0039] The working principle of the bag cutting device of the food plastic packaging bag is described in detail below.

[0040] like Figure 1-6 As shown, by pulling the clamp 305, the packaging bag is placed at the bottom of the clamp 305, and then the clamp 305 is loosened so that the reset spring 306 drives the clamp 305 to fix the packaging bag, and then the drive motor 401 is started to drive the first gear 201 to drive the second gear 402 to rotate, so that the two-way threaded rod 2 rotates and drives the first movable plate 301 to make relative movement under the action of the first thread groove 302 threadedly engaged with the outer walls at both ends of the two-way threaded rod 2, thereby achieving the purpose of tightening the packaging bag, and then the driving threaded rod 106 is rotated to drive the second movable plate 5 to make a linear sliding motion under the action of the second thread groove 502 threadedly engaged with the outer wall of the driving threaded rod 106, and then the position of the second movable plate 5 and the cutting knife 504 is adjusted, and then the cutting knife 504 can be slid to cut the packaging bag.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A bag cutting device for food plastic packaging bags, comprising a workbench (1), a bidirectional threaded rod (2), a fixed tensioning assembly (3), and a driving device (4), characterized in that: The bidirectional threaded rod (2) is movably connected to the bottom of the workbench (1); one end of the bidirectional threaded rod (2) is fixedly connected to a first gear (201); the driving device (4) comprises a driving motor (401) and a second gear (402); the fixed tensioning assembly (3) comprises a first movable plate (301), a movable groove (304), a clamping plate (305), and a return spring (306); the first movable plate (301) is movably connected to both ends of the workbench (1); the clamping plate (305) is movably connected to the inside of the movable groove (304); and the return spring (306) is fixedly connected to the upper end of the clamping plate (305).

2. A food plastic packaging bag cutting device according to claim 1, characterized in that: The driving motor (401) is fixedly connected to one end of the workbench (1); the second gear (402) is fixedly connected to the output shaft of the driving motor (401) via a coupling; and the first gear (201) and the second gear (402) are meshed.

3. The food plastic packaging bag cutting device according to claim 1, characterized in that: The workbench (1) has limit slots (102) at both ends, and the first movable plate (301) has limit blocks (303) fixedly connected at both ends. The limit blocks (303) are slidably connected to the inside of the limit slots (102).

4. The food plastic packaging bag cutting device according to claim 1, characterized in that: A first thread groove (302) is formed at the bottom of the first movable plate (301), the first thread groove (302) is threadedly engaged with the outer wall of the bidirectional threaded rod (2), the first movable plate (301) is movably connected to the two ends of the bidirectional threaded rod (2), the bottom of the workbench (1) is fixedly connected to a support plate (101), and the bidirectional threaded rod (2) is fixedly connected to the inside of the support plate (101) via a bearing.

5. The food plastic packaging bag cutting device according to claim 1, characterized in that: Fixed plates (103) are fixedly connected to both ends of the upper surface of the workbench (1), and a second movable plate (5) is movably connected inside the fixed plate (103), wherein the second movable plate (5) includes a cutting knife (504).

6. A food plastic packaging bag cutting device according to claim 5, characterized in that: A guide groove (104) is provided inside the fixed plate (103), and guide blocks (501) are fixedly connected to both ends of the second movable plate (5), and the guide blocks (501) are slidably connected to the inside of the guide groove (104).

7. The food plastic packaging bag cutting device according to claim 5, characterized in that: A fixing block (105) is fixedly connected to the front and rear ends of one end of the fixing plate (103); a driving threaded rod (106) is movably connected to the interior of the fixing block (105) via a bearing; a second thread groove (502) is formed at one end of the second movable plate (5); the second thread groove (502) is threadably engaged with the outer wall of the driving threaded rod (106).

8. The food plastic packaging bag cutting device according to claim 5, characterized in that: A sliding groove (503) is provided inside the second movable plate (5), and sliding blocks are fixedly connected to both ends of the cutting knife (504), and the cutting knife (504) is slidably connected to the inside of the sliding groove (503) via the sliding blocks.

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