Cutting machine for PE packaging bag

Abstract

The utility model relates to the field of packaging bag cutting, and discloses a PE packaging bag cutting machine which comprises a machine table, a cutting assembly is arranged at the rear end of the upper surface of the machine table, a positioning assembly is arranged at the front end of the upper surface of the machine table, a quick-release assembly is arranged on the front surface of the machine table, and the quick-release assembly comprises a supporting block. And a rotating shaft is inserted into the upper surface of the supporting block, the outer wall of the rotating shaft is sleeved with a packaging bag body, the positioning assembly comprises a supporting plate, the left surface of the supporting plate penetrates through and is rotationally connected with a guide roller, and a guide plate is fixedly connected to the upper surface of the machine table. According to the packaging bag transverse positioning device, through cooperation of the positioning assemblies, the distance between the guide blocks can be flexibly adjusted according to the width of a packaging bag, so that the packaging bag is transversely positioned, it is guaranteed that transverse inclination cannot be generated when the packaging bag is pulled, the problem that notches are uneven due to inclination of the packaging bag is solved, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging bag cutting, in particular to a cutting machine for PE packaging bags. Background Art

[0002] In today's society, PE packaging bags have become an indispensable packaging material in various fields due to their good physical properties, low cost and wide applicability. PE packaging bags can be seen in the packaging of food, daily necessities, industrial products, etc. With the continuous growth and changes in market demand for packaging of various products, the processing requirements for PE packaging bags are also increasing.

[0003] After searching, Chinese patent announcement number: CN218138251U discloses a cutting device for packaging bags, including a box body, wherein supporting feet are installed at the four corners of the bottom of the box body, connecting seats are symmetrically installed at both ends of the shorter edge on one side of the top of the box body, two rollers are arranged up and down between the inner sides of the connecting seats, and limiting plates are symmetrically installed on the two longer edges of the top of the box body, and fixing plates are symmetrically installed at both ends of the narrower side of the outer periphery of the box body close to the connecting seat, and a card slot is opened at the end of the top of the fixing plate away from the box body. Compared with the existing packaging bag cutting, the utility model can make the packaging bag be pulled out smoothly through design, prevent the cutting line of the packaging bag from tilting when it is laid flat, so that the incision of the packaging bag is smoother when it is cut.

[0004] Although this device has certain improvements, it still has the following shortcomings.

[0005] 1. The bag winding rod in the device is directly connected to the fixed plate. When the packaging bag is pulled quickly, the roller will accelerate the rotation, and the roller is easy to fall off due to the rotation, and the stability is poor.

[0006] 2. Although the device can flatten the packaging bag to ensure the flatness of the packaging bag when it is cut, the widths of different packaging bags are different, and the width of the roller is fixed, so the packaging bag cannot be positioned laterally. The packaging bag is prone to tilt when being pulled, which easily leads to uneven cuts and affects the cutting quality. Therefore, a PE packaging bag cutting machine is proposed to solve the above problems. Utility Model Content

[0007] In order to make up for the above shortcomings, the utility model provides a cutting machine for PE packaging bags, aiming to improve the problem in the prior art that the packaging bags cannot be positioned laterally when cutting, resulting in the packaging bags being easily tilted when pulled and uneven cuts after cutting.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cutting machine for PE packaging bags, comprising a machine table, a cutting assembly is arranged at the rear end of the upper surface of the machine table, a positioning assembly is arranged at the front end of the upper surface of the machine table, a quick-release assembly is arranged on the front surface of the machine table, the quick-release assembly comprises a support block, a rotating shaft is inserted into the upper surface of the support block, a packaging bag body is sleeved on the outer wall of the rotating shaft, the positioning assembly comprises a support plate, a guide roller is penetrated and rotatably connected to the left surface of the support plate, a guide plate is fixedly connected to the upper surface of the machine table, a slider is slidably connected to the upper surface of the guide plate, the upper surface of the machine table is slidably connected to the guide block, and a connecting rod is hinged on the front surface of the slider.

[0009] As a further description of the above technical solution:

[0010] The positioning assembly also includes a limiting rod, a limiting groove is provided on the upper surface of the guide plate, and a round block is elastically connected to the inner wall of the sliding block via a compression spring.

[0011] As a further description of the above technical solution:

[0012] The quick-release assembly also includes a positioning block, and the inner wall of the support block is elastically connected to a U-shaped plate via a positioning spring.

[0013] As a further description of the above technical solution:

[0014] The rear surface of the support block is fixedly connected to the front surface of the machine, the lower surface of the support plate is fixedly connected to the upper surface of the machine, the packaging bag body and the upper surface of the guide roller are fitted together, and the guide plate is set in a concave shape.

[0015] As a further description of the above technical solution:

[0016] The guide roller passes through the right surface of the guide block, the front end of the connecting rod is hinged to the rear surface of the guide block, and two groups of connecting rods and guide blocks are provided, and the two groups of connecting rods and guide blocks are symmetrically distributed about the center line of the guide roller.

[0017] As a further description of the above technical solution:

[0018] The round block is slidably connected to the inner wall of the slider, the limit rod passes through and is slidably connected to the upper surface of the slider, the limit rod is inserted into the inner wall of the limit groove, the limit rod passes through and is fixedly connected to the upper surface of the round block, one end of the compression spring is fixedly connected to the inner wall of the top of the slider, and the other end of the compression spring is fixedly connected to the upper surface of the round block.

[0019] As a further description of the above technical solution:

[0020] The upper surface of the positioning block is opened as an inclined surface, and the positioning block is slidably connected to the inner wall of the supporting block. The U-shaped plate is set to a U shape, and the upper surface of the U-shaped plate is fixedly connected to the lower surface of the positioning block. The U-shaped plate passes through and is slidably connected to the lower surface of the supporting block. One end of the positioning spring is fixedly connected to the rear surface of the U-shaped plate, and the other end of the positioning spring is fixedly connected to the inner wall on the rear side of the supporting block.

[0021] As a further description of the above technical solution:

[0022] The cutting assembly comprises an electric telescopic rod, which is arranged on the upper surface of the machine platform. The upper surface of the electric telescopic rod is fixedly connected with a top plate, and a cutting knife is installed on the lower surface of the top plate.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, through the cooperation of the positioning components, the spacing of the guide blocks can be flexibly adjusted according to the width of the packaging bag, so as to position the packaging bag laterally, ensuring that the packaging bag will not be tilted laterally when being pulled, thus solving the problem of uneven cutting caused by tilting of the packaging bag and improving the processing quality.

[0025] 2. In the present invention, the shaft can be quickly disassembled and assembled through the cooperation of the quick-release assembly, and when the shaft is installed, the upper surface will be blocked by the positioning block, and the shaft cannot be separated from the support block, thereby enhancing the stability of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic front view of the three-dimensional structure of the overall device in the utility model;

[0027] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the support block in the utility model;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure section of the guide plate, the connecting rod and the sliding block in the utility model.

[0029] Legend:

[0030] 1. Machine; 21. Electric telescopic rod; 22. Top plate; 23. Cutting knife; 31. Support block; 32. Rotating shaft; 33. Positioning block; 34. Positioning spring; 35. U-shaped plate; 4. Packaging bag body; 51. Support plate; 52. Guide plate; 53. Guide roller; 54. Slider; 55. Limit rod; 56. Compression spring; 57. Round block; 58. Connecting rod; 59. Guide block; 501. Limit groove. DETAILED DESCRIPTION

[0031] 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.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a cutting machine for PE packaging bags, comprising a machine table 1 for supporting the overall device, a cutting assembly is arranged at the rear end of the upper surface of the machine table 1, and the cutting assembly can cut the PE packaging bag, a positioning assembly is arranged at the front end of the upper surface of the machine table 1, and the positioning assembly can keep the PE packaging bag centered when it moves backward, and can prevent the PE packaging bag from tilting, so as to ensure that the incision is neat during cutting, a quick-release assembly is arranged on the front surface of the machine table 1, and the quick-release assembly can quickly disassemble and assemble the rotating shaft 32 wrapped around the PE packaging bag, and the quick-release assembly comprises a supporting block 31, and a rotating shaft 32 is inserted on the upper surface of the supporting block 31, and a packaging bag body 4 is sleeved on the outer wall of the rotating shaft 32, and the packaging bag body 4 can be released when the rotating shaft 32 rotates, and the positioning assembly comprises a supporting plate 51, the left surface of the support plate 51 is penetrated and rotatably connected with a guide roller 53, the support plate 51 provides support for the guide roller 53, the upper surface of the machine 1 is fixedly connected with a guide plate 52, the lower surface of the guide plate 52 is hollow, the packaging bag body 4 can pass through, which can prevent the packaging bag body 4 from tilting and not being flat when moving backward, the upper surface of the guide plate 52 is slidably connected with a slider 54, the slider 54 slides in the front and rear directions, the upper surface of the machine 1 is slidably connected with a guide block 59, the guide block 59 slides laterally along the upper surface of the machine 1, the left surface of the guide block 59 is opened as an inclined surface, the PE packaging bag will slide downward along the inclined surface of the guide block 59 when being straightened, the front surface of the slider 54 is hinged with a connecting rod 58, and the slider 54 will pull the connecting rod 58 when moving.

[0033] Reference Figure 1 - Figure 3 The positioning assembly also includes a limiting rod 55, a limiting groove 501 is provided on the upper surface of the guide plate 52, the bottom end of the limiting rod 55 is fitted in the limiting groove 501, the limiting groove 501 is slightly larger than the limiting rod 55, and the inner wall of the slider 54 is elastically connected with a round block 57 through a compression spring 56.

[0034] Reference Figure 1 - Figure 3 The quick-release assembly also includes a positioning block 33 , and the inner wall of the support block 31 is elastically connected to a U-shaped plate 35 via a positioning spring 34 .

[0035] Reference Figure 1 - Figure 3The rear surface of the support block 31 is fixedly connected to the front surface of the machine 1, and the machine 1 provides support for the support block 31. The lower surface of the support plate 51 is fixedly connected to the upper surface of the machine 1. The upper surfaces of the packaging bag body 4 and the guide roller 53 are in contact and will move along the track of the guide roller 53. The guide plate 52 is set to be concave.

[0036] Reference Figure 1 - Figure 3 The guide roller 53 passes through the right surface of the guide block 59. The guide block 59 will not affect the rotation of the guide roller 53. The outer wall of the guide roller 53 is in contact with the guide block 59. The front end of the connecting rod 58 is hinged on the rear surface of the guide block 59. When the connecting rod 58 swings, it will drive the guide block 59 to move laterally. There are two groups of connecting rods 58 and guide blocks 59. The two groups of connecting rods 58 and guide blocks 59 are symmetrically distributed on the left and right sides with respect to the center line of the guide roller 53. Under the influence of the connecting rod 58, the two groups of guide blocks 59 will shrink or open synchronously.

[0037] Reference Figure 1 - Figure 3 The round block 57 is slidably connected to the inner wall of the slider 54 and slides longitudinally. The limiting rod 55 passes through and is slidably connected to the upper surface of the slider 54. The upper surface of the limiting rod 55 is set to a convex shape for easy grasping. The limiting rod 55 is inserted into the inner wall of the limiting groove 501 to limit the slider 54. The limiting rod 55 passes through and is fixedly connected to the upper surface of the round block 57. When the limiting rod 55 moves, it will drive the round block 57 to move synchronously. One end of the compression spring 56 is fixedly connected to the inner wall at the top of the slider 54, and the other end of the compression spring 56 is fixedly connected to the upper surface of the round block 57. When the round block 57 moves upward, it will squeeze the compression spring 56 to generate a reaction force.

[0038] Reference Figure 1 - Figure 3 The upper surface of the positioning block 33 is opened as an inclined surface. By squeezing the inclined surface of the upper surface of the positioning block 33, the positioning block 33 will move backward to release the obstruction. The positioning block 33 is slidably connected to the inner wall of the support block 31 and slides horizontally. The U-shaped plate 35 is set to a U shape. The upper surface of the U-shaped plate 35 is fixedly connected to the lower surface of the positioning block 33. The positioning block 33 and the U-shaped plate 35 will move synchronously. The U-shaped plate 35 passes through and is slidably connected to the lower surface of the support block 31. One end of the positioning spring 34 is fixedly connected to the rear surface of the U-shaped plate 35, and the other end of the positioning spring 34 is fixedly connected to the inner wall of the rear side of the support block 31. When the U-shaped plate 35 moves backward, it will squeeze the positioning spring 34 to generate a reaction force.

[0039] Reference Figure 1 - Figure 3The cutting assembly includes an electric telescopic rod 21, which is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The electric telescopic rod 21 is arranged on the upper surface of the machine 1, and a top plate 22 is fixedly connected to the upper surface of the electric telescopic rod 21. A cutting knife 23 is installed on the lower surface of the top plate 22. The electric telescopic rod 21 can drive the top plate 22 and the cutting knife 23 to move longitudinally, and the cutting knife 23 can cut the packaging bag when it moves downward.

[0040] Working principle: First, insert the rotating shaft 32 wrapped with the packaging bag body 4 into the supporting block 31. When the rotating shaft 32 is plugged in, the inclined surface of the upper surface of the positioning block 33 will be squeezed to make it move backward and drive the U-shaped plate 35 to move synchronously, squeezing the positioning spring 34 to generate a reaction force. At this time, the rotating shaft 32 can be smoothly inserted. When the rotating shaft 32 is inserted into place, under the reaction force of the positioning spring 34, the positioning block 33 and the U-shaped plate 35 are reset to form a blocking and fixing for the rotating shaft 32. When disassembly is required, the U-shaped plate 35 is moved backward to drive the positioning block 33 to move synchronously to release the blocking of the rotating shaft 32, and then the rotating shaft 32 can be removed.

[0041] When adjusting the position of the guide block 59 according to the width of the packaging bag body 4, first pull the limit rod 55 upward to drive the round block 57 to move upward to squeeze the compression spring 56 to generate a reaction force, and the limit rod 55 moving upward will disengage from the limit groove 501 to release the limit on the slider 54, and then move the slider 54 in the front and rear directions to squeeze the connecting rod 58. When the slider 54 moves backward, it will pull the connecting rod 58 to make it rotate, and the connecting rod 58 will drive the two groups of guide blocks 59 to move closer. When the slider 54 moves forward, it will squeeze the connecting rod 58 to make it rotate in the opposite direction, further driving the two groups of guide blocks 59 to separate. When the guide block 59 reaches the appropriate position, release the limit rod 55, and the reaction force of the compression spring 56 will push the round block 57 and the limit rod 55 to move downward, and the limit rod 55 will be plugged into the limit groove 501 to limit the slider 54 to ensure stability.

[0042] At this time, pulling the packaging bag body 4 will drive the rotating shaft 32 to rotate, and the packaging bag body 4 will move backward. When the packaging bag body 4 reaches the cutting position, the electric telescopic rod 21 is started, and the electric telescopic rod 21 drives the top plate 22 and the cutting knife 23 to move downward to cut the packaging bag, thereby achieving accurate cutting of the PE packaging bag.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PE packaging bag cutting machine, comprising a machine platform (1), characterized in that: A cutting assembly is arranged at the rear end of the upper surface of the machine (1), a positioning assembly is arranged at the front end of the upper surface of the machine (1), and a quick-release assembly is arranged at the front surface of the machine (1), the quick-release assembly comprises a support block (31), a rotating shaft (32) is inserted into the upper surface of the support block (31), and the outer wall of the rotating shaft (32) is sleeved with a packaging bag body (4), the positioning assembly comprises a support plate (51), a guide roller (53) is penetrated and rotatably connected to the left surface of the support plate (51), the upper surface of the machine (1) is fixedly connected to the guide plate (52), the upper surface of the guide plate (52) is slidably connected to a slider (54), the upper surface of the machine (1) is slidably connected to a guide block (59), and the front surface of the slider (54) is hinged to a connecting rod (58).

2. A PE packaging bag cutting machine according to claim 1, characterized in that: The positioning assembly also includes a limiting rod (55), a limiting groove (501) is provided on the upper surface of the guide plate (52), and the inner wall of the sliding block (54) is elastically connected to a round block (57) via a compression spring (56).

3. A PE packaging bag cutting machine according to claim 1, characterized in that: The quick-release assembly also includes a positioning block (33), and the inner wall of the support block (31) is elastically connected to a U-shaped plate (35) via a positioning spring (34).

4. A PE packaging bag cutting machine according to claim 1, characterized in that: The rear surface of the support block (31) is fixedly connected to the front surface of the machine (1), the lower surface of the support plate (51) is fixedly connected to the upper surface of the machine (1), the packaging bag body (4) and the upper surface of the guide roller (53) are in contact with each other, and the guide plate (52) is arranged in a concave shape.

5. The PE packaging bag cutting machine according to claim 1, characterized in that: The guide roller (53) passes through the right surface of the guide block (59), the front end of the connecting rod (58) is hinged to the rear surface of the guide block (59), and the connecting rod (58) and the guide block (59) are provided in two groups, and the two groups of the connecting rod (58) and the guide block (59) are symmetrically distributed on the left and right sides with respect to the center line of the guide roller (53).

6. A PE packaging bag cutting machine according to claim 2, characterized in that: The round block (57) is slidably connected to the inner wall of the slider (54), the limiting rod (55) passes through and is slidably connected to the upper surface of the slider (54), the limiting rod (55) is inserted into the inner wall of the limiting groove (501), the limiting rod (55) passes through and is fixedly connected to the upper surface of the round block (57), one end of the compression spring (56) is fixedly connected to the inner wall of the top end of the slider (54), and the other end of the compression spring (56) is fixedly connected to the upper surface of the round block (57).

7. A PE packaging bag cutting machine according to claim 3, characterized in that: The upper surface of the positioning block (33) is provided with an inclined surface, the positioning block (33) is slidably connected to the inner wall of the support block (31), the U-shaped plate (35) is arranged in a U shape, the upper surface of the U-shaped plate (35) is fixedly connected to the lower surface of the positioning block (33), the U-shaped plate (35) penetrates and is slidably connected to the lower surface of the support block (31), one end of the positioning spring (34) is fixedly connected to the rear surface of the U-shaped plate (35), and the other end of the positioning spring (34) is fixedly connected to the inner wall of the rear side of the support block (31).

8. The PE packaging bag cutting machine according to claim 1, characterized in that: The cutting assembly comprises an electric telescopic rod (21), the electric telescopic rod (21) being arranged on the upper surface of the machine platform (1), the upper surface of the electric telescopic rod (21) being fixedly connected to a top plate (22), and the lower surface of the top plate (22) being equipped with a cutting knife (23).

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