TPU film cutting device

Abstract

The utility model discloses a TPU film cutting device, and relates to the technical field of film cutting. The device comprises a base table, a vertical sliding groove is formed in the bottom of the base table, a rectangular frame is slidably connected into the vertical sliding groove, a transverse sliding groove is formed in the inner top of the rectangular frame, a connecting sliding block is slidably connected into the transverse sliding groove, a mounting table is mounted at the bottom of the connecting sliding block, and a storage groove is formed in the bottom of the mounting table; and an inserting groove is formed in the inner top of the storage groove, and a cutting knife is slidably connected into the inserting groove. According to the TPU film cutting device, when the driving mounting table drives the cutting knife to approach the TPU film, the resilience characteristic of the abutting spring is utilized, so that the abutting spring pushes the pre-fixing ring to drive the abutting ball to form rolling abutting with the TPU film, and then the cutting knife is pushed to penetrate through the pre-fixing ring to form extrusion cutting on the surface of the TPU film; therefore, the abutting balls are conveniently used for forming fixed abutting on the periphery of the cutting point of the cutting knife and the TPU film, and the situation that cutting is pushed by the cutting knife to generate deviation or deformation is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of film cutting technology, and in particular to a TPU film cutting device. Background Art

[0002] With the rapid advancement of science and technology and the continued growth of the socioeconomic landscape, TPU (thermoplastic polyurethane) film, as a new material, is finding increasing application in a variety of fields, including electronics, energy, and transportation. Due to its excellent physical and chemical properties, such as high elasticity, abrasion resistance, oil resistance, and low-temperature resistance, TPU film has become the material of choice for many high-end products. TPU film is particularly indispensable in areas such as smartphones, automotive parts, industrial control equipment, and cable casing.

[0003] However, in the traditional TPU film production and processing process, mechanical blades are mostly used as the main tool in the cutting process. Although this method meets the basic cutting needs to a certain extent, it exposes many shortcomings when facing TPU film, a highly elastic and wear-resistant material.

[0004] First, during the mechanical blade cutting process, due to the elasticity of the TPU film, it is often difficult for the blade to cut the material in one go. Therefore, it is necessary to increase the cutting pressure on the cutting head, which can easily cause the blade to push the TPU film to deform or offset, thereby reducing the cutting accuracy of the device. Utility Model Content

[0005] The purpose of this application is to solve the problem that due to the elasticity of TPU film, it is often difficult for the blade to cut the material in one go, so it is necessary to increase the cutting pressure on the cutting head, which easily causes the blade to push the TPU film to deform or offset, thereby reducing the cutting accuracy of the device. This application provides a TPU film cutting device.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] The top of the lifting block is provided with a lifting mechanism, and the lifting mechanism is connected with the lifting mechanism by the lifting mechanism, and the lifting mechanism is connected with the lifting mechanism of the lifting mechanism are connected with the lifting mechanism of the lifting mechanism.

[0008] By adopting the above technical solution and setting up the coordinated use of the ejection assembly and the transmission mechanism, it is convenient to utilize the rebound characteristics of the resistance spring when the driving mounting table drives the cutting knife to approach the TPU film, so that the resistance spring pushes the pre-fixed ring to drive the resistance ball to form a rolling resistance with the TPU film, and then pushes the cutting knife through the pre-fixed ring to form an extrusion cut on the surface of the TPU film, so that the resistance ball can be used to form a fixed resistance around the cutting point of the cutting knife and the TPU film, effectively reducing the situation where the cutting is offset or deformed by the push of the cutting knife, and improving the cutting accuracy of the device.

[0009] Furthermore, the transmission mechanism includes a transmission rack 1 fixedly connected to one end of the cutting knife, a transmission gear meshed with the transmission rack 1 is rotatably connected inside the storage groove, one end of the connecting rod is fixedly connected to a transmission rack 2 meshed with the transmission gear, and a guide assembly is installed on the inner side of the storage groove.

[0010] By adopting the above technical solution, by setting up the guide component and the coordinated use of the transmission rack 1, the transmission gear, and the transmission rack 2, it is convenient to push the transmission rack 2 to engage with the transmission gear when the driving mounting table drives the resistance ball to form a rolling conflict with the TPU film, and drive the transmission gear to engage with the transmission rack 1, so that the transmission rack 1 pushes the cutting knife to squeeze the TPU film to form a cut, effectively improving the practicality of the device.

[0011] Furthermore, the guide assembly includes a guide slot symmetrically opened on the inner side of the receiving groove, and one end of the abutment ring is symmetrically fixedly connected with a guide slider adapted to the guide slot.

[0012] By adopting the above-mentioned technical solution, by setting up the coordinated use of the guide groove and the guide slider, when the cutting knife is driven to move along the length direction of the slot, the axial rotation angle of the cutting knife is guided by the guide groove and the guide slider, thereby reducing the rotation of the cutting knife during cutting and further improving the cutting accuracy of the device.

[0013] Furthermore, the ejection assembly includes an ejection electric push rod fixedly connected to the inside of the connecting slider, one end of the mounting platform is symmetrically fixedly connected to the ejection slide rod, and one end of the ejection slide rod is slidably connected to the connecting slider.

[0014] By adopting the above technical solution and arranging the ejection electric push rod and the ejection slide rod for use in conjunction, it is convenient to start the ejection electric push rod to push the mounting table to drive the cutting knife and the resistance ball to move toward or away from the TPU film along the length direction of the ejection slide rod, thereby further improving the practicality of the device.

[0015] Furthermore, one end of the mounting platform is fixedly connected to a liquid nitrogen tank, an output end of the liquid nitrogen tank is provided with a solenoid valve, an annular air guide chamber connected to the interference ball is opened inside the pre-fixed ring, and the output end of the liquid nitrogen tank is connected to the annular air guide chamber through a pipeline.

[0016] By adopting the above technical solution, by setting up the solenoid valve and the annular air guide chamber for use, it is convenient to guide the liquid nitrogen inside the liquid nitrogen tank to exchange heat and cool with the friction balls, and use the friction balls to exchange heat and cool with the surface of the TPU film, thereby effectively reducing the impact of the high temperature environment formed by the cutting knife and the TPU film end on the TPU film, and further improving the cutting accuracy of the device.

[0017] Furthermore, the vertical slide is internally rotatably connected to a vertical screw, one end of the rectangular frame is threadedly connected to the vertical screw, one end of the base is fixedly connected to a vertical motor, the output end of the vertical motor is fixedly connected to the vertical screw, the horizontal slide is internally rotatably connected to a horizontal screw threadedly connected to the connecting slider, one end of the rectangular frame is fixedly connected to a horizontal motor, and the output end of the horizontal motor is fixedly connected to the horizontal screw.

[0018] By adopting the above technical solution, by setting the vertical screw and rectangular frame, and the horizontal screw and connecting slider in coordination, starting the vertical motor and the horizontal motor can respectively drive the mounting table to drive the cutting knife to move along the length direction of the vertical slide groove and the horizontal slide groove respectively, thereby effectively improving the practicality of the device.

[0019] Furthermore, the four corners of the top of the base are slidably connected with locking slide rods, one end of the locking slide rod is symmetrically fixedly connected with a resistance block, the top of the resistance block is fixedly connected with a locking spring, one end of the locking spring is fixedly connected to the base, and one end of the locking slide rod is fixedly connected with a pressing block.

[0020] By adopting the above technical solution, by setting the locking spring and cooperating with the resistance block, the locking slide rod and the pressing block, it is convenient to utilize the rebound characteristics of the locking spring to push the resistance block to drive the locking slide rod to push the pressing block to extrude and fix the TPU film, thereby facilitating the fixing of the TPU film on the top of the base, thereby improving the cutting stability of the TPU film.

[0021] Furthermore, a rubber pad is fixedly connected to the bottom of the pressing block.

[0022] By adopting the above technical solution and arranging the rubber pad for use in conjunction with the pressing block, the friction between the pressing block and the TPU film is effectively increased, and the stability of the device is further improved.

[0023] In summary, this application has at least one of the following beneficial effects:

[0024] 1. By setting up the coordinated use of the ejection assembly and the transmission mechanism, when the driving mounting table drives the cutting knife to approach the TPU film, the rebound characteristics of the resistance spring are utilized, so that the resistance spring pushes the pre-fixed ring to drive the resistance ball to form a rolling resistance with the TPU film, and then pushes the cutting knife through the pre-fixed ring to form an extrusion cut on the surface of the TPU film. In this way, the resistance ball forms a fixed resistance around the cutting point of the cutting knife and the TPU film, effectively reducing the situation where the cutting knife is pushed to cause deviation or deformation, thereby improving the cutting accuracy of the device.

[0025] 2. By setting up the solenoid valve and the annular air guide chamber, it is convenient to guide the liquid nitrogen inside the liquid nitrogen tank to exchange heat and cool with the friction ball, and use the friction ball to exchange heat and cool with the surface of the TPU film, thereby effectively reducing the impact of the high temperature environment formed by the cutting knife and the TPU film end on the TPU film, and further improving the cutting accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is an exploded view of the internal structure of the storage tank in this application.

[0028] Figure 3 It is an exploded view of the internal structure of the annular air guide chamber in this application.

[0029] Figure 4It is an exploded view of the internal structure of the base in this application.

[0030] Description of reference numerals:

[0031] 1. Base; 2. Vertical slide; 3. Rectangular frame; 4. Horizontal slide; 5. Connecting slider; 6. Mounting table; 7. Storage slot; 8. Slot; 9. Cutting knife; 10. Interference ring; 11. Connecting rod; 12. Pre-fixing ring; 13. Interference ball; 14. Interference spring; 15. Transmission rack 1; 16. Transmission gear; 17. Transmission rack 2; 18. Guide slide; 19. Guide slider; 20. Ejection push rod; 21. Ejection slide; 22. Liquid nitrogen tank; 23. Solenoid valve; 24. Annular air guide chamber; 25. Vertical screw; 26. Vertical motor; 27. Horizontal screw; 28. Horizontal motor; 29. Locking slide; 30. Interference block; 31. Locking spring; 32. Pressing block; 33. Rubber pad. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a TPU film cutting device.

[0034] Reference Figure 1-Figure 3 A TPU film cutting device includes a base 1, a vertical slide 2 is provided at the bottom of the base 1, a rectangular frame 3 is slidably connected to the interior of the vertical slide 2, a horizontal slide 4 is provided at the inner top of the rectangular frame 3, a connecting slider 5 is slidably connected to the inner side of the horizontal slide 4, a mounting platform 6 is installed at the bottom of the connecting slider 5, a receiving groove 7 is provided at the bottom of the mounting platform 6, a slot 8 is provided at the inner top of the receiving groove 7, a cutting blade 9 is slidably connected to the interior of the slot 8, and a resistance ring 10 is slidably connected to the interior of the receiving groove 7. The bottom of the interference ring 10 is fixedly connected to a connecting rod 11, the bottom of the connecting rod 11 is fixedly connected to a pre-fixed ring 12, the bottom of the pre-fixed ring 12 is evenly hinged with a plurality of interference balls 13, the inner top of the receiving groove 7 is fixedly connected to a interference spring 14, the interference spring 14 is fixedly connected to the top of the interference ring 10, the interior of the receiving groove 7 is installed with a transmission mechanism for driving the cutting knife 9 to pass through the pre-fixed ring 12, and one end of the connecting slider 5 is installed with an ejection assembly for driving the interference balls 13 to move toward the top of the base 1;

[0035] Among them, the transmission mechanism includes a transmission rack 15 fixedly connected to one end of the cutting knife 9, a transmission gear 16 meshing with the transmission rack 15 is rotatably connected inside the storage groove 7, and a transmission rack 2 17 meshing with the transmission gear 16 is fixedly connected to one end of the connecting rod 11. A guide assembly is installed inside the storage groove 7;

[0036] Moreover, the guide assembly includes a guide slot 18 symmetrically provided inside the receiving slot 7, and one end of the abutment ring 10 is symmetrically fixedly connected with a guide slider 19 adapted to the guide slot 18;

[0037] Moreover, the ejection assembly includes an ejection electric push rod 20 fixedly connected to the inside of the connecting slider 5, and one end of the mounting platform 6 is symmetrically fixedly connected to the ejection slide 21, and one end of the ejection slide 21 is slidably connected to the connecting slider 5.

[0038] When in use, the TPU film is first laid on the top of the base 1, and the ejection electric push rod 20 is started to push the mounting platform 6 to move toward the surface of the TPU film along the length direction of the ejection slide rod 21, and the mounting platform 6 drives the resistance ball 13 to form a rolling resistance with the TPU film, and at the same time, the pre-fixing ring 12 pushes the connecting rod 11 to drive the resistance ring 10 to move upward along the length direction of the guide slide groove 18, and squeezes the resistance spring 14 to produce a contraction deformation, and then utilizes the rebound characteristics of the resistance spring 14 to make the resistance spring 14 push the pre-fixing ring 12 downward along the length direction of the guide slide groove 18 to drive the resistance ball 13 to form an extrusion resistance with the surface of the TPU film;

[0039] At the same time, the connecting rod 11 drives the transmission rack 2 17 to engage with the transmission gear 16, so that the transmission gear 16 rotates and drives the transmission gear 16 to engage with the transmission rack 15. At the same time, the transmission rack 15 is pushed to drive the cutting knife 9 along the length direction of the guide groove 18 through the interior of the pre-fixed ring 12, and forms an extrusion cut on the surface of the TPU film, so as to facilitate the use of the resistance ball 13 to form a fixed resistance around the cutting point of the cutting knife 9 and the TPU film, effectively reducing the situation where the cutting is pushed by the cutting knife 9 to cause displacement or deformation, thereby improving the cutting accuracy of the device.

[0040] Reference Figure 1-Figure 3 One end of the mounting platform 6 is fixedly connected to a liquid nitrogen tank 22, and an electromagnetic valve 23 is provided at the output end of the liquid nitrogen tank 22. An annular air guide chamber 24 connected to the conflicting ball 13 is opened inside the pre-fixed ring 12, and the output end of the liquid nitrogen tank 22 is connected to the annular air guide chamber 24 through a pipeline.

[0041] During use, when the driving friction ball 13 forms a rolling friction with the TPU film, the solenoid valve 23 is opened, so that the liquid nitrogen inside the liquid nitrogen tank 22 is introduced into the interior of the annular air guide chamber 24 through the pipeline, and the annular air guide chamber 24 is used to perform contact heat exchange with the surface of the friction ball 13 to reduce the surface temperature of the friction ball 13. At the same time, the friction ball 13 is used to exchange heat and cool the surface of the TPU film, so as to facilitate rapid cooling of the cutting end between the cutting knife 9 and the TPU film, thereby reducing the impact of the high temperature environment formed by the cutting knife 9 and the TPU film end on the TPU film, and further improving the cutting accuracy of the device.

[0042] Reference Figure 1 and Figure 4 The vertical slide 2 is internally rotatably connected with a vertical screw 25, one end of the rectangular frame 3 is threadedly connected to the vertical screw 25, one end of the base 1 is fixedly connected with a vertical motor 26, and the output end of the vertical motor 26 is fixedly connected to the vertical screw 25, the horizontal slide 4 is internally rotatably connected with a horizontal screw 27 threadedly connected to the connecting slider 5, one end of the rectangular frame 3 is fixedly connected with a horizontal motor 28, and the output end of the horizontal motor 28 is fixedly connected to the horizontal screw 27.

[0043] During use, by starting the vertical motor 26, the vertical screw 25 can be driven to form a threaded connection with the rectangular frame 3, and the rectangular frame 3 can be driven to drive the mounting platform 6 to move along the length direction of the vertical slide 2. Then, by starting the horizontal motor 28, the horizontal screw 27 can be driven to form a threaded connection with the connecting slider 5, and the connecting slider 5 can be driven to drive the mounting platform 6 to move along the length direction of the horizontal slide 4. This makes it easier to drive the mounting platform 6 to drive the cutting knife 9 to move along the length directions of the vertical slide 2 and the horizontal slide 4 respectively, thereby effectively improving the practicality of the device.

[0044] Reference Figure 1 and Figure 4 , the four corners of the top of the base 1 are slidably connected with locking slide rods 29, one end of the locking slide rod 29 is symmetrically fixedly connected to the resistance block 30, the top of the resistance block 30 is fixedly connected to the locking spring 31, one end of the locking spring 31 is fixedly connected to the base 1, and one end of the locking slide rod 29 is fixedly connected to the pressing block 32;

[0045] The bottom of the pressing block 32 is fixedly connected with a rubber pad 33 .

[0046] When in use, first lay the TPU film on the top of the base 1, then pull the locking slide 29 to drive the resistance block 30 to squeeze the locking spring 31 to produce a contraction deformation, and at the same time make the locking slide 29 drive the pressing block 32 to move away from the base 1, and then pull the four corners of the TPU film to be embedded between the pressing block 32 and the base 1, and then use the rebound characteristics of the locking spring 31 to make the locking spring 31 push the resistance block 30 to drive the locking slide 29 to move downward, and at the same time make the locking slide 29 drive the pressing block 32 to push the locking spring 31 to squeeze and fix the TPU film, so as to facilitate fixing the TPU film on the top of the base 1, thereby improving the cutting stability of the TPU film.

[0047] The implementation principle of a TPU film cutting device in this embodiment is as follows: first, the TPU film is laid on the top of the base 1, and then the locking slide bar 29 is pulled to drive the resistance block 30 to squeeze the locking spring 31 to produce contraction deformation, and at the same time, the locking slide bar 29 drives the pressing block 32 to move away from the base 1, and then the four corners of the TPU film are pulled to be embedded between the pressing block 32 and the base 1, and then the rebound characteristics of the locking spring 31 are used to make the locking spring 31 push the resistance block 30 to drive the locking slide bar 29 to move downward, and at the same time, the locking slide bar 29 drives the pressing block 32 to push the locking spring 31 to squeeze and fix the TPU film;

[0048] Then, by starting the ejection electric push rod 20, the mounting platform 6 is pushed to move toward the surface of the TPU film along the length direction of the ejection slide rod 21, and the mounting platform 6 drives the resistance ball 13 to form a rolling resistance with the TPU film. At the same time, the pre-fixing ring 12 pushes the connecting rod 11 to drive the resistance ring 10 to move upward along the length direction of the guide slide groove 18, and squeezes the resistance spring 14 to produce a contraction deformation. Then, by utilizing the rebound characteristic of the resistance spring 14, the resistance spring 14 pushes the pre-fixing ring 12 downward along the length direction of the guide slide groove 18 to drive the resistance ball 13 to form an extrusion resistance with the surface of the TPU film.

[0049] At the same time, the connecting rod 11 drives the transmission rack 2 17 to engage with the transmission gear 16, so that the transmission gear 16 rotates and drives the transmission gear 16 to engage with the transmission rack 15. At the same time, the transmission rack 15 drives the cutting knife 9 to pass through the interior of the pre-fixed ring 12 along the length direction of the guide groove 18, and extrudes and cuts the surface of the TPU film;

[0050] Then, by opening the solenoid valve 23, the liquid nitrogen inside the liquid nitrogen tank 22 is introduced into the interior of the annular air guide chamber 24 through the pipeline, and the annular air guide chamber 24 is in contact with the surface of the resistance ball 13 for heat exchange to reduce the surface temperature of the resistance ball 13. At the same time, the resistance ball 13 is used to exchange heat and cool down with the surface of the TPU film.

Claims

1. A TPU film cutting device, comprising a base (1), characterized in that: The bottom of the base (1) is provided with a vertical slide groove (2), the interior of the vertical slide groove (2) is slidably connected to a rectangular frame (3), the inner top of the rectangular frame (3) is provided with a horizontal slide groove (4), the interior of the horizontal slide groove (4) is slidably connected to a connecting slider (5), the bottom of the connecting slider (5) is installed with a mounting platform (6), the bottom of the mounting platform (6) is provided with a receiving groove (7), the inner top of the receiving groove (7) is provided with a slot (8), the interior of the slot (8) is slidably connected to a cutting knife (9), the interior of the receiving groove (7) is slidably connected to a resistance ring (10), the resistance ring The bottom of (10) is fixedly connected to a connecting rod (11), the bottom of the connecting rod (11) is fixedly connected to a pre-fixing ring (12), the bottom of the pre-fixing ring (12) is uniformly spherically hinged with a plurality of resistance balls (13), the inner top of the receiving groove (7) is fixedly connected to a resistance spring (14), the resistance spring (14) is fixedly connected to the top of the resistance ring (10), the interior of the receiving groove (7) is equipped with a transmission mechanism for driving the cutting knife (9) to pass through the pre-fixing ring (12), and one end of the connecting slider (5) is equipped with an ejection component for driving the resistance ball (13) to move toward the top of the base (1).

2. A TPU film cutting device according to claim 1, characterized in that: The transmission mechanism includes a transmission rack 1 (15) fixedly connected to one end of the cutting knife (9), a transmission gear (16) meshing with the transmission rack 1 (15) is rotatably connected inside the receiving groove (7), and one end of the connecting rod (11) is fixedly connected to a transmission rack 2 (17) meshing with the transmission gear (16), and a guide assembly is installed on the inner side of the receiving groove (7).

3. The TPU film cutting device according to claim 2, characterized in that: The guide assembly comprises a guide slot (18) symmetrically arranged inside the receiving slot (7), and one end of the abutment ring (10) is symmetrically fixedly connected to a guide slider (19) adapted to the guide slot (18).

4. The TPU film cutting device according to claim 1, characterized in that: The ejection assembly includes an ejection electric push rod (20) fixedly connected to the inside of the connecting slider (5), one end of the mounting platform (6) is symmetrically fixedly connected to an ejection slide rod (21), and one end of the ejection slide rod (21) is slidably connected to the connecting slider (5).

5. The TPU film cutting device according to claim 1, characterized in that: One end of the mounting platform (6) is fixedly connected to a liquid nitrogen tank (22), an output end of the liquid nitrogen tank (22) is provided with a solenoid valve (23), an annular air guide chamber (24) in communication with the abutting ball (13) is provided inside the pre-fixing ring (12), and the output end of the liquid nitrogen tank (22) is in communication with the annular air guide chamber (24) via a pipeline.

6. The TPU film cutting device according to claim 1, characterized in that: The vertical chute (2) is internally rotatably connected to a vertical screw (25), one end of the rectangular frame (3) is threadedly connected to the vertical screw (25), one end of the base (1) is fixedly connected to a vertical motor (26), the output end of the vertical motor (26) is fixedly connected to the vertical screw (25), the horizontal chute (4) is internally rotatably connected to a horizontal screw (27) threadedly connected to the connecting slider (5), one end of the rectangular frame (3) is fixedly connected to a horizontal motor (28), the output end of the horizontal motor (28) is fixedly connected to the horizontal screw (27).

7. The TPU film cutting device according to claim 1, characterized in that: The four corners of the top of the base (1) are all slidably connected to locking slide bars (29), one end of the locking slide bar (29) is symmetrically fixedly connected to a resistance block (30), the top of the resistance block (30) is fixedly connected to a locking spring (31), one end of the locking spring (31) is fixedly connected to the base (1), and one end of the locking slide bar (29) is fixedly connected to a pressing block (32).

8. The TPU film cutting device according to claim 7, characterized in that: A rubber pad (33) is fixedly connected to the bottom of the pressing block (32).

Images