Packaging bag slitting equipment capable of preventing deformation

Abstract

The utility model relates to the technical field of packaging bag production, and discloses anti-deformation packaging bag slitting equipment which comprises a machine body, an air cylinder is fixedly installed at the top of the machine body, a pressing plate is fixedly installed at the piston end of the air cylinder, slitting teeth are fixedly installed at the bottom of the pressing plate, and the slitting teeth are fixedly installed at the bottom of the machine body. According to the packaging bag slitting equipment capable of preventing deformation, the air cylinder drives the pressing plate and the slitting teeth to move downwards, so that a packaging bag can be slit, meanwhile, the air cylinder drives the pressing plate and the slitting teeth to move downwards, and meanwhile the packaging bag can be slit. According to the packaging bag slitting device, the packaging bag can be tightly pressed on the machine body in cooperation with a positioning rod, a limiting block, a positioning plate, a rubber pad and a spring, the situation that the packaging bag is displaced when the slitting teeth slit the packaging bag is avoided, therefore, the situation that a notch deforms can be avoided, the stability of the packaging bag in the slitting process is improved, and the product yield can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag production, in particular to packaging bag cutting equipment capable of preventing deformation. Background Art

[0002] Plastic packaging bags are made of plastic as raw material and are used to produce various daily necessities. They are widely used in daily life and industrial production. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic and can be used to hold food.

[0003] According to a publicly disclosed slitting device for the production of food packaging bags (publication number: CN218892294U), the above application uses a reciprocating slitting component to conveniently drive the slitting teeth to move, making slitting convenient. The buffer component can provide buffering during slitting to avoid complete cutting of the food packaging bags during slitting.

[0004] The above technical solution performs the cutting operation on the packaging bag by moving the cutting teeth downward, but the cutting teeth will pull the packaging bag during the extrusion and cutting process, causing the packaging bag to be displaced during the cutting process, which may cause the incision to be deformed, etc., which is prone to defective products and affects subsequent production. Utility Model Content

[0005] The purpose of the utility model is to provide a packaging bag cutting device that can prevent deformation, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a packaging bag slitting device capable of preventing deformation, comprising a body, a cylinder fixedly mounted on the top of the body, a pressure plate fixedly mounted on the piston end of the cylinder, a slitting tooth fixedly mounted on the bottom of the pressure plate, a positioning mechanism provided on the pressure plate, by providing the positioning mechanism, the packaging bag can be fixed to prevent the slitting tooth from causing displacement of the packaging bag when the packaging bag is slitting, an auxiliary mechanism provided on the positioning mechanism, by providing the auxiliary mechanism, the packaging bag can be flattened before slitting, which is conducive to improving the flatness of the packaging bag cut, the positioning mechanism comprising:

[0007] A positioning rod, the positioning rod is slidably connected to the inner wall of the pressure plate and passes through the pressure plate, a limit block is fixedly installed on the top of the positioning rod, and a positioning plate is fixedly installed on the bottom of the positioning rod;

[0008] A rubber pad is fixedly mounted on the bottom of the positioning plate and can be used to compact the packaging bag;

[0009] A spring is sleeved on the outer wall of the positioning rod, one end of the spring is fixedly mounted on the bottom of the limit block, and the other end of the spring is fixedly mounted on the top of the pressure plate. By setting the spring in conjunction with the limit block, the positioning rod can press the positioning plate tightly against the surface of the packaging bag.

[0010] Preferably, the auxiliary mechanism includes a rocker arm, one end of which is hinged to the side wall of the positioning plate, and the other end of which is rotatably connected to a pressure roller, and the packaging bag can be flattened by arranging the pressure roller.

[0011] Preferably, a torsion spring is provided at the hinge between the rocker arm and the positioning plate, and the rocker arm can be driven to rotate and reset by the torsion spring.

[0012] Preferably, two groups of the rocker arms are provided, and the two groups of the rocker arms are mirror-imaged on the side walls of the positioning plate with the positioning rod as the central axis.

[0013] Preferably, two groups of positioning rods are provided, and the two groups of positioning rods are mirror-imaged and arranged on the inner wall of the positioning plate with the cylinder as the central axis.

[0014] Preferably, the cutting teeth are located in the middle of the two groups of positioning rods.

[0015] Compared with the prior art, the present invention provides a packaging bag cutting device that can prevent deformation and has the following beneficial effects:

[0016] 1. This anti-deformation packaging bag slitting equipment can slit the packaging bags by driving the pressure plate and slitting teeth downward through the cylinder. At the same time, the packaging bags can be pressed against the machine body in conjunction with the positioning rod, limit block, positioning plate, rubber pad and spring to prevent the slitting teeth from causing the packaging bags to move when slitting, thereby avoiding deformation of the incision and improving the stability of the packaging bags during slitting, thereby improving the product yield.

[0017] 2. This anti-deformation packaging bag slitting equipment can make the pressure roller roll closely against the surface of the machine body by moving the pressure plate downward in conjunction with the positioning rod, positioning plate, rocker arm, and torsion spring. The rolling of the pressure roller can flatten the packaging bag, so that the packaging bag can be cut in a flat state, further improving the flatness of the packaging bag cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall side planar structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the pressing plate of the utility model;

[0021] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure.

[0022] In the figure: 1. Machine body; 2. Cylinder; 3. Pressing plate; 4. Cutting teeth; 5. Positioning mechanism; 51. Positioning rod; 52. Rubber pad; 53. Spring; 54. Positioning plate; 55. Limiting block; 6. Auxiliary mechanism; 61. Rocker; 62. Pressing roller; 63. Torsion spring. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a packaging bag cutting device that can prevent deformation, including a body 1, a cylinder 2 is fixedly installed on the top of the body 1, a pressure plate 3 is fixedly installed on the piston end of the cylinder 2, and a cutting tooth 4 is fixedly installed on the bottom of the pressure plate 3. When the packaging bag to be cut is placed on the body 1 and placed under the cutting tooth 4, the cylinder 2 is then started to drive the pressure plate 3 to move downward. At this time, the pressure plate 3 will drive the cutting tooth 4 to move downward synchronously, and the packaging bag can be cut by the downward-moving cutting tooth 4. The cutting tooth 4 is located in the middle of the two groups of positioning rods 51. After the cylinder 2 is reset, the cutting tooth 4 is The distance between the tooth tip and the pressure plate 3 is smaller than the distance between the rubber pad 52 and the pressure plate 3. A positioning mechanism 5 is provided on the pressure plate 3. By setting the positioning mechanism 5, the packaging bag can be fixed to prevent the cutting teeth 4 from causing the packaging bag to move when cutting the packaging bag, thereby avoiding deformation of the incision and improving the stability of the packaging bag during cutting, thereby improving the product yield. An auxiliary mechanism 6 is provided on the positioning mechanism 5. By setting the auxiliary mechanism 6, the packaging bag can be flattened before cutting the packaging bag, so that the packaging bag can be cut in a flat state, further improving the flatness of the incision of the packaging bag.

[0024] The above-mentioned positioning mechanism 5 includes a positioning rod 51, a rubber pad 52, a spring 53, a positioning plate 54, and a limit block 55; the positioning rod 51 is slidably connected to the inner wall of the pressure plate 3, and the positioning rod 51 passes through the pressure plate 3, and there are two groups of positioning rods 51. The two groups of positioning rods 51 are mirror-imaged on the inner wall of the positioning plate 54 with the cylinder 2 as the central axis. The top of the positioning rod 51 is fixedly installed with a limit block 55, and the bottom of the positioning rod 51 is fixedly installed with a positioning plate 54. The rubber pad 52 is fixedly installed at the bottom of the positioning plate 54. When the pressure plate 3 moves downward, it will drive the positioning rod 51 to move downward synchronously. Since the distance between the bottom of the cutting tooth 4 and the pressure plate 3 is smaller than the distance between the rubber pad 52 and the pressure plate 3, after the cutting tooth 4 contacts the packaging bag Before the bag is opened, the rubber pad 52 contacts the packaging bag first, and the packaging bag is pressed by the rubber pad 52, which can prevent the cutting teeth 4 from causing the packaging bag to move when cutting the packaging bag, thereby preventing the incision from being deformed. The spring 53 is sleeved on the outer wall of the positioning rod 51, and one end of the spring 53 is fixedly mounted on the bottom of the limit block 55, and the other end of the spring 53 is fixedly mounted on the top of the pressure plate 3. As the pressure plate 3 continues to move downward, the rubber pad 52 will press the packaging bag tightly against the machine body 1, and at this time, the pressure plate 3 continues to move downward to stretch the spring 53, so that the spring 53 pulls the limit block 55 downward, thereby causing the limit block 55 to squeeze the positioning rod 51 downward, so that the positioning plate 54 at the bottom of the positioning rod 51 presses the rubber pad 52 tightly against the surface of the packaging bag.

[0025] The above-mentioned auxiliary mechanism 6 includes a rocker arm 61, a pressure roller 62, and a torsion spring 63; one end of the rocker arm 61 is hinged to the side wall of the positioning plate 54, and the other end of the rocker arm 61 is rotatably connected to the pressure roller 62. When the positioning plate 54 moves downward, the rocker arm 61 will drive the pressure roller 62 to move downward synchronously. When the pressure roller 62 contacts the machine body 1 during the downward movement, it will roll in contact with the surface of the machine body 1. At the same time, the rocker arm 61 will rotate and drive the pressure roller 62 to gradually move away from the pressure plate 3. The packaging bag can be flattened by the rolling of the pressure roller 62, so that the packaging bag can be cut in a flat state, further improving the flatness of the packaging bag cut. A torsion spring 63 is provided at the hinge between the rocker arm 61 and the positioning plate 54. Two groups of rocker arms 61 are provided. The two groups of rocker arms 61 are mirror-imaged on the side wall of the positioning plate 54 with the positioning rod 51 as the center axis. The elastic cooperation of the torsion spring 63 with the rocker arm 61 can make the pressure roller 62 always roll in contact with the surface of the machine body 1.

[0026] Working principle: When the packaging bag that needs to be cut is placed on the machine body 1 and placed under the cutting teeth 4, the cylinder 2 is then started to drive the pressure plate 3 to move downward. At this time, the pressure plate 3 will drive the cutting teeth 4 to move downward synchronously. The packaging bag can be cut by the downward-moving cutting teeth 4. When the pressure plate 3 moves downward, it will also drive the positioning rod 51 to move downward synchronously. Since the distance between the bottom of the cutting teeth 4 and the pressure plate 3 is smaller than the distance between the rubber pad 52 and the pressure plate 3, the rubber pad 52 will first contact the packaging bag before the cutting teeth 4 contact the packaging bag, and as the pressure plate 3 continues to move downward, the rubber pad 52 will press the packaging bag tightly against the machine body 1. At this time, the pressing plate 3 continues to move downward, stretching the spring 53, causing the spring 53 to pull the limit block 55 downward, thereby causing the limit block 55 to squeeze the positioning rod 51 downward, causing the positioning plate 54 at the bottom of the positioning rod 51 to press the rubber pad 52 tightly against the surface of the packaging bag, thereby pressing the packaging bag tightly against the machine body 1. At the same time, as the pressing plate 3 continues to move downward, the packaging bag can be cut by the cutting teeth 4. At this time, the packaging bag is pressed by the rubber pad 52, which can prevent the cutting teeth 4 from causing the packaging bag to move when cutting the packaging bag, thereby preventing the incision from being deformed, improving the stability of the packaging bag during cutting, and thus improving the product yield.

[0027] When the positioning plate 54 moves downward, it will drive the rocker arm 61 to move downward synchronously. At the same time, the rocker arm 61 will drive the pressure roller 62 to move downward synchronously. When the pressure roller 62 contacts the machine body 1 during the downward movement, it will roll on the surface of the machine body 1. At the same time, the rocker arm 61 will rotate and drive the pressure roller 62 to gradually move away from the pressure plate 3. At this time, the rocker arm 61 will compress the torsion spring 63. The elasticity of the torsion spring 63 and the rocker arm 61 can make the pressure roller 62 always roll on the surface of the machine body 1. At this time, the packaging bag can be flattened by the rolling of the pressure roller 62, so that the packaging bag can be cut in a flat state, further improving the flatness of the packaging bag cut.

[0028] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A packaging bag cutting device capable of preventing deformation, comprising a body (1), characterized in that: A cylinder (2) is fixedly mounted on the top of the machine body (1), a pressure plate (3) is fixedly mounted on the piston end of the cylinder (2), a cutting tooth (4) is fixedly mounted on the bottom of the pressure plate (3), a positioning mechanism (5) is provided on the pressure plate (3), an auxiliary mechanism (6) is provided on the positioning mechanism (5), and the positioning mechanism (5) comprises: A positioning rod (51), wherein the positioning rod (51) is slidably connected to the inner wall of the pressure plate (3), and the positioning rod (51) passes through the pressure plate (3), a limit block (55) is fixedly installed on the top of the positioning rod (51), and a positioning plate (54) is fixedly installed on the bottom of the positioning rod (51); A rubber pad (52), wherein the rubber pad (52) is fixedly mounted on the bottom of the positioning plate (54); A spring (53) is sleeved on the outer wall of the positioning rod (51), one end of the spring (53) is fixedly mounted on the bottom of the limit block (55), and the other end of the spring (53) is fixedly mounted on the top of the pressure plate (3).

2. The anti-deformation packaging bag cutting device according to claim 1, characterized in that: The auxiliary mechanism (6) comprises a rocker (61), one end of which is hinged to the side wall of the positioning plate (54), and the other end of which is rotatably connected to a pressure roller (62).

3. The anti-deformation packaging bag cutting device according to claim 2, characterized in that: A torsion spring (63) is provided at the hinge between the rocker (61) and the positioning plate (54).

4. The anti-deformation packaging bag cutting device according to claim 2, characterized in that: Two groups of the swing rods (61) are provided, and the two groups of the swing rods (61) are mirror-imaged and arranged on the side wall of the positioning plate (54) with the positioning rod (51) as the central axis.

5. The anti-deformation packaging bag cutting device according to claim 1, characterized in that: Two groups of positioning rods (51) are provided, and the two groups of positioning rods (51) are mirror-imaged and arranged on the inner wall of the positioning plate (54) with the cylinder (2) as the central axis.

6. The deformation-resistant packaging bag slitting device according to claim 1, characterized in that: The cutting teeth (4) are located in the middle of the two groups of positioning rods (51).

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