Cutting device for PET packaging material production

Abstract

The cutting device for PET packaging material production comprises a machining table, a cutting assembly is arranged on the upper end face of the machining table, a pressing assembly is arranged above the machining table, and an electric push rod is controlled to do contraction action, so that the electric push rod can drive a supporting frame to move downwards through a linkage supporting plate; the supporting frame can drive the cutter and the positioning pressing plate to descend together, and in the process, the extrusion force of the compression spring can apply downward extrusion force to the positioning pressing plate through the connecting rod, so that the descending positioning pressing plate can press and fix the PET packaging film sheet, the displacement condition of the PET packaging film sheet in the cutting process is avoided, and the cutting quality of the PET packaging film sheet is improved. When the PET packaging film is cut and separated, the descending cutter can pierce the PET packaging film, then the motor is controlled to rotate forwards or reversely, the motor can drive the external threaded rod to rotate forwards or reversely together, and the external threaded rod rotating forwards or reversely can drive the cutter to move forwards and backwards together through the displacement seat and the connecting seat to cut and separate the PET packaging film.

Description

Technical Field

[0001] The utility model relates to the technical field of PET packaging material cutting, in particular to a cutting device for producing PET packaging materials. Background Art

[0002] PET, or polyethylene terephthalate, is the most important type of thermoplastic polyester. PET packaging materials are widely used in the packaging of food, electronics, electrical appliances and other fields due to their advantages such as light weight, good flexibility and not easy to break. During the production process of PET film materials, in order to make it adapt to the packaging of products of corresponding sizes, it is often necessary to use a cutting device to cut it.

[0003] However, when the cutting device in the prior art is cutting the PET film material, there is no corresponding auxiliary fixing structure to position the PET film material. Since the PET film material is relatively soft, after the cutting knife cuts downward and then shrinks upward to separate from the PET film material, it is easy for the PET film material to adhere to the cutting knife and move with the cutting knife, causing the cutting edge of the PET film material to curl, thereby affecting the aesthetics of the PET film material and poor practicality. Utility Model Content

[0004] The purpose of the utility model is to provide a cutting device for producing PET packaging materials to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cutting device for producing PET packaging materials comprises a processing table, a PET packaging film sheet and a supporting box, wherein the lower end surface of the processing table is fixedly connected to the supporting box, the upper end surface of the processing table is placed with a PET packaging film sheet, the upper end surface of the processing table is provided with a cutting component, and the cutting component is used to cut the PET packaging film sheet placed on the upper end surface of the processing table, and a pressing component is provided above the processing table, and the pressing component is used to press and position the PET packaging film sheet.

[0007] Preferably, the cutting assembly includes a support frame, a motor, a cutting knife, a through slot, a connecting seat, an electric push rod, a linkage support plate, a displacement seat and an externally threaded rod. The support frame is installed inside the processing table, a linkage support plate is provided at the bottom of the support frame, an electric push rod is installed at the middle position of the lower end surface of the linkage support plate, a motor is installed on the upper side of the rear end surface of the support frame, an externally threaded rod is installed at the front end of the motor, a displacement seat is installed on the externally threaded annular side surface, a connecting seat is connected to the middle position of the lower end surface of the displacement seat, the cutting knife is installed at the lower end of the connecting seat, and a through slot is provided in the middle position of the upper end surface of the processing table.

[0008] Preferably, the pressing assembly includes a positioning pressure plate, a connecting rod, a support rod and an extension plate. The left and right end surfaces of the support frame are symmetrically fixedly connected with the extension plates. The support rod is inserted inside the extension plate. The connecting rod is installed on the lower side of the support rod. The bottom of the connecting rod is connected to the positioning pressure plate.

[0009] Preferably, a limiting cavity is provided at the lower side of the interior of the support rod, a compression spring is installed inside the limiting cavity, and an anti-drop cover is installed on the lower end surface of the support rod.

[0010] Preferably, the front-to-back movable distance of the cutting knife is smaller than the front-to-back length of the through slot, and the front-to-back movable distance of the cutting knife is larger than the front-to-back width of the PET packaging film sheet. The processing table has limited through cavities symmetrically arranged on both sides of the front and rear ends of the upper end, and the limited through cavities match the support frame. An internal threaded through hole is arranged on the upper inner side of the displacement seat.

[0011] Preferably, a fixing screw is installed on the right end surface of the extension plate, an anti-slip sheet is pasted on the lower end surface of the positioning pressure plate, the connecting rod is T-shaped, and a height scale line is provided on the right end surface of the support rod.

[0012] Preferably, a box door is installed on the front end surface of the support box, and the box door is an openable and closable structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the production process of PET packaging film sheets, by controlling the electric push rod to retract, the electric push rod can drive the support frame to move downward through the linkage support plate, and the downward support frame will drive the cutting knife to descend together. When the cutting knife descends to the required position, the motor can be controlled to rotate forward or reverse, so that the motor can drive the external threaded rod to rotate forward or reverse together, and the external threaded rod rotating forward or reverse will drive the cutting knife to move forward and backward through the displacement seat and the connecting seat to cut and separate the PET packaging film sheets;

[0015] 2. When the support frame moves downward, the positioning platen will be driven to move downward together. During this process, the extrusion force of the compression spring will apply downward extrusion force to the positioning platen through the connecting rod, so that the descending positioning platen can press and fix the PET packaging film sheet to prevent the PET packaging film sheet from displacement during the cutting process. When the cutting knife moves upward and separates from the PET packaging film sheet, the positioning platen will continue to press and fix the PET packaging film sheet to prevent the PET packaging film sheet from moving upward with the cutting knife, resulting in curling and burrs at the cutting edge, thereby ensuring the aesthetics of the PET packaging film sheet after cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a structural diagram of the pressing component and the cutting component of the utility model when they are not in use;

[0018] Figure 3 It is a structural diagram of the pressing component and the cutting component in the utility model;

[0019] Figure 4 It is a front cross-sectional view of the pressing component and the cutting component in the utility model;

[0020] Figure 5 It is a partial structural diagram of the cutting component in the utility model;

[0021] Figure 6 for Figure 4 A magnified view of middle;

[0022] Figure 7 It is a structural diagram of the processing table in the utility model.

[0023] In the figure: 1. processing table; 2. PET packaging film sheet; 3. pressing assembly; 31. positioning pressure plate; 311. anti-slip sheet; 32. connecting rod; 33. supporting rod; 331. anti-slip cover; 34. fixing screw; 35. extension plate; 36. compression spring; 37. limiting cavity; 4. cutting assembly; 41. supporting frame; 42. motor; 43. cutting knife; 44. through groove; 45. connecting seat; 46. electric push rod; 47. linkage support plate; 48. displacement seat; 481. internal thread through hole; 49. external thread rod; 411. limiting cavity; 5. supporting box; 51. box door. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-7 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A cutting device for producing PET packaging materials comprises a processing table 1, a PET packaging film sheet 2 and a support box 5. The support box 5 is fixedly connected to the lower end surface of the processing table 1, and the support box 5 can stably support the processing table 1. The PET packaging film sheet 2 is placed on the upper end surface of the processing table 1. A box door 51 is installed on the front end surface of the support box 5, and the box door 51 is an openable and closable structure. The openable and closable box door 51 facilitates later staff to enter the support box 5. A control panel is installed on the front end surface of the processing table 1, and the control panel is connected to the motor 42 and the electric push rod 46 respectively through wires. The control panel facilitates the staff to control the motor 42 and the electric push rod 46 to work according to needs. Since the internal detailed structure and working principle of the control panel are relatively mature technologies in the prior art, they will not be described in detail here.

[0028] A cutting assembly 4 is provided on the upper end surface of the processing table 1, and the cutting assembly 4 is used to cut the PET packaging film sheet 2 placed on the upper end surface of the processing table 1. A pressing assembly 3 is provided above the processing table 1, and the pressing assembly 3 is used to press and position the PET packaging film sheet 2.

[0029] The cutting assembly 4 includes a support frame 41, a motor 42, a cutting knife 43, a through slot 44, a connecting seat 45, an electric push rod 46, a linkage support plate 47, a displacement seat 48 and an external threaded rod 49. The processing table 1 is internally installed with a support frame 41, and the support frame 41 is concave in shape. The support frame 41 is connected to the linkage support plate 47 and the extension plate 35 by welding. The support frame 41 can support the motor 42, the external threaded rod 49 and the extension plate 35. A linkage support plate 47 is provided at the bottom of the support frame 41, and the linkage support plate 47 can support the support frame 41. The linkage support plate 47 can support the support frame 41. An electric push rod 46 is installed in the middle position of the lower end surface of the plate 47. When working, the electric push rod 46 can drive the support frame 41 to move up and down through the linkage support plate 47. A motor 42 is installed on the upper side of the rear end surface of the support frame 41. When working, the motor 42 can drive the external threaded rod 49 to rotate. The external threaded rod 49 is installed at the front end of the motor 42. An internal threaded through hole 481 is opened on the upper side of the displacement seat 48, and the internal threaded through hole 481 is meshed with the external threaded rod 49. When the external threaded rod 49 rotates forward or reversely, it can drive the internal threaded through hole 481 to drive the displacement seat 48 to move forward and backward.

[0030] A displacement seat 48 is installed on the side of the external thread ring, and the displacement seat 48 is connected to the connecting seat 45 by welding. The displacement seat 48 can support the connecting seat 45. The middle position of the lower end surface of the displacement seat 48 is connected to the connecting seat 45. The connecting seat 45 can support the cutting knife 43. The lower end of the connecting seat 45 is installed with a cutting knife 43. The front and rear movable distance of the cutting knife 43 is less than the front and rear length of the through groove 44, and the front and rear movable distance of the cutting knife 43 is greater than the front and rear width of the PET packaging film sheet 2. When the cutting knife 43 contacts with the PET packaging film sheet 2 and moves back and forth, it can cut the PET packaging film sheet 2. The ET packaging film sheet 2 is cut and separated, and the cutting knife 43 is a detachable structure. The detachable cutting knife 43 is convenient for the later staff to replace it separately. A through groove 44 is opened in the middle position of the upper end surface of the processing table 1. The through groove 44 prevents the cutting knife 43 from contacting with the processing table 1. The upper end surface of the processing table 1 is symmetrically provided with limited through cavities 411 on both sides of the front and rear sides, and the limited through cavities 411 are matched with the support frame 41. The limited through cavity 411 not only facilitates the support frame 41 to move up and down inside the processing table 1, but also prevents the support frame 41 from deflecting or shaking during the lifting and use process.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, in this embodiment, when the support frame 41 moves downward, the positioning pressure plate 31 will be driven to move downward together. During this process, the extrusion force of the compression spring 36 will apply a downward extrusion force to the positioning pressure plate 31 through the connecting rod 32, so that the descending positioning pressure plate 31 can press and fix the PET packaging film sheet 2 to prevent the PET packaging film sheet 2 from being displaced during the cutting process.

[0033] The pressing assembly 3 includes a positioning pressure plate 31, a connecting rod 32, a support rod 33 and an extension plate 35. The left and right end surfaces of the support frame 41 are symmetrically fixedly connected with the extension plates 35, and the extension plates 35 can support the support rods 33. The extension plates 35 are inserted with support rods 33 inside, and the support rods 33 can support the connecting rods 32. A connecting rod 32 is installed on the lower side of the support rods 33. The connecting rod 32 is connected to the positioning pressure plate 31 by welding. The connecting rod 32 is T-shaped. The T-shaped connecting rod 32 can not only support the positioning pressure plate 31, but also facilitate the anti-detachment cover 331 to limit and block it. The bottom of the connecting rod 32 is connected with the positioning pressure plate 31. After moving downward, the positioning pressure plate 31 can press and position the PET packaging film sheet 2 to avoid displacement of the PET packaging film sheet 2 during the cutting process.

[0034] The support rod 33 is provided with a limit cavity 37 at the lower side thereof, and the limit cavity 37 matches the connecting rod 32, and the limit cavity 37 facilitates the upper end of the connecting rod 32 to move up and down inside the support rod 33. A compression spring 36 is installed inside the limit cavity 37, and the compression spring 36 can not only exert a downward squeezing force on the connecting rod 32, but also enable the connecting rod 32 to have the ability to retract up and down. An anti-detachment cover 331 is installed on the lower end surface of the support rod 33, and the anti-detachment cover 331 prevents the connecting rod 32 from slipping during use. A fixing screw 34 is installed on the right end surface of the extension plate 35, and the fixing screw 34 can fix the support rod 33 inserted in the extension plate 35. An anti-slip sheet 311 is pasted on the lower end surface of the positioning pressure plate 31, and the anti-slip sheet 311 makes the lower end surface of the positioning pressure plate 31 more anti-slip. A height scale line is set on the right end surface of the support rod 33, and the height scale line is convenient for the staff to observe the height of the support rod 33, so as to adjust the two groups of support rods 33 on the left and right sides to the same height in the later stage.

[0035] Working principle: During the production of the PET packaging film sheet 2, the staff first lays the PET packaging film sheet 2 to be cut on the upper end surface of the processing table 1, and then adjusts the PET packaging film sheet 2 to the left and right so that the area to be cut of the PET packaging film sheet 2 is directly below the cutting knife 43 (refer to Figure 1 ), after the adjustment is completed, the electric push rod 46 can be controlled to retract, so that the electric push rod 46 drives the support frame 41 to move downward through the linkage support plate 47, and the support frame 41 will drive the support rod 33 to move downward together through the extension plate 35, and the support rod 33 will drive the positioning pressure plate 31 to descend together through the connecting rod 32. In this process, the extrusion force of the compression spring 36 will apply a downward extrusion force to the positioning pressure plate 31 through the connecting rod 32, so that the descending positioning pressure plate 31 presses and fixes the PET packaging film sheet 2 to prevent the PET packaging film sheet 2 from being displaced during the cutting process; at the same time, the descending support frame 41 will bring the displacement seat 48 and the connecting seat 45 The movable cutting knife 43 descends synchronously until the cutting knife 43 pierces the PET packaging film sheet 2. At this time, the electric push rod 46 can be stopped, and then the motor 42 is controlled to rotate forward through the control panel, so that the forward rotating motor 42 drives the external threaded rod 49 to rotate forward together, and the forward rotating external threaded rod 49 will mesh with the internal threaded through hole 481 and drive the displacement seat 48 to move backward, so that the displacement seat 48 drives the cutting knife 43 to move backward together through the connecting seat 45. Similarly, when the motor 42 is controlled to be reversed, the displacement seat 48 can drive the cutting knife 43 to move forward through the connecting seat 45, so that the PET packaging film sheet 2 can be cut and separated with the help of the cutting knife 43 moving forward and backward.

[0036] After the PET packaging film sheet 2 is cut and separated, the motor 42 is stopped first, and then the electric push rod 46 is controlled to extend, so that the support frame 41 can drive the cutting knife 43 and the extension plate 35 to rise together. In this process, the cutting knife 43 will be separated from the PET packaging film sheet 2 first, and the anti-slip sheet 311 will be separated from the PET packaging film sheet 2 later, so as to prevent the cutting knife 43 from driving the PET packaging film sheet 2 to move upward. When the support frame 41 moves up a certain distance, the support rod 33 will drive the positioning pressing plate 31 to move upward through the connecting rod 32, so that the anti-slip sheet 311 is separated from the PET packaging film sheet 2. At this time, the staff can take away the cut PET packaging film sheet 2; in the later use process, the staff only needs to loosen the fixing screw 34 with the help of an external wrench, and then the use height of the support rod 33 can be adjusted up and down. In this process, when the support rod 33 moves downward, the pressing force of the positioning pressing plate 31 will increase accordingly, and vice versa, the pressing force of the positioning pressing plate 31 will decrease accordingly, so that the staff can adjust the pressing force of the positioning pressing plate 31 according to the needs.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing PET packaging materials, comprising a processing table (1), a PET packaging film sheet (2) and a supporting box (5), characterized in that: The lower end surface of the processing table (1) is fixedly connected to a support box (5); a PET packaging film sheet (2) is placed on the upper end surface of the processing table (1); a cutting component (4) is arranged on the upper end surface of the processing table (1), and the cutting component (4) is used to cut the PET packaging film sheet (2) placed on the upper end surface of the processing table (1); a pressing component (3) is arranged above the processing table (1), and the pressing component (3) is used to press and position the PET packaging film sheet (2); The cutting assembly (4) comprises a support frame (41), a motor (42), a cutting blade (43), a through slot (44), a connecting seat (45), an electric push rod (46), a linkage support plate (47), a displacement seat (48) and an externally threaded rod (49); the support frame (41) is installed inside the processing table (1); a linkage support plate (47) is arranged at the bottom of the support frame (41); an electric push rod (46) is installed at a middle position of a lower end surface of the linkage support plate (47); a motor (42) is installed on the upper side of a rear end surface of the support frame (41); an externally threaded rod (49) is installed at the front end of the motor (42); a displacement seat (48) is installed on a circular side surface of the externally threaded rod; a connecting seat (45) is connected to a middle position of a lower end surface of the displacement seat (48); a cutting blade (43) is installed at the lower end of the connecting seat (45); and a through slot (44) is provided at a middle position of an upper end surface of the processing table (1); The pressing assembly (3) comprises a positioning pressing plate (31), a connecting rod (32), a supporting rod (33) and an extension plate (35); the left and right end surfaces of the supporting frame (41) are symmetrically fixedly connected with the extension plates (35); the supporting rod (33) is inserted into the extension plate (35); the connecting rod (32) is installed on the lower side of the supporting rod (33); and the bottom of the connecting rod (32) is connected to the positioning pressing plate (31).

2. A cutting device for producing PET packaging materials according to claim 1, characterized in that: A limiting cavity (37) is provided on the lower inner side of the support rod (33), a compression spring (36) is installed inside the limiting cavity (37), and an anti-drop cover (331) is installed on the lower end surface of the support rod (33).

3. A cutting device for producing PET packaging materials according to claim 1, characterized in that: The front-to-back movable distance of the cutting blade (43) is less than the front-to-back length of the through slot (44), and the front-to-back movable distance of the cutting blade (43) is greater than the front-to-back width of the PET packaging film sheet (2). The processing table (1) has symmetrically disposed limit cavities (411) on both sides of the front and rear ends of the upper end surface, and the limit cavities (411) match the support frame (41). The displacement seat (48) has an internal threaded through hole (481) disposed on the upper side thereof.

4. A cutting device for producing PET packaging materials according to claim 1, characterized in that: A fixing screw (34) is installed on the right end surface of the extension plate (35), an anti-slip sheet (311) is pasted on the lower end surface of the positioning pressure plate (31), the connecting rod (32) is T-shaped, and a height scale line is provided on the right end surface of the support rod (33).

5. A cutting device for producing PET packaging materials according to claim 1, characterized in that: A box door (51) is installed on the front end surface of the support box (5), and the box door (51) is an openable and closable structure.

Images