Film punching head and film punching machine

Abstract

The utility model provides a film punching head and a film punching machine thereof, including a punching cylinder, a pressing cylinder, and an elastic member; the punching cylinder is a hollow structure, the outer circle of the punching cylinder is provided with an upper limit ring and a lower limit ring, and the bottom end of the punching cylinder is formed with punching teeth; the pressing cylinder includes an integrally formed cylinder top surface and a cylinder wall, the cylinder top surface is formed with a sleeve hole for the punching cylinder to pass through, the inner diameter of the sleeve hole is smaller than the outer diameter of the lower limit ring, and the cylinder top surface is sleeved between the upper limit ring and the lower limit ring; the elastic member is sleeved on the outer surface of the punching cylinder and is located between the upper limit ring and the cylinder top surface. When punching, the pressing cylinder presses the film, so that the film is in a tensioned state, which is helpful for accurate punching; after the punching is completed, the film around the hole will not be lifted up along with the punching cylinder, and will not affect the subsequent punching operation, thereby achieving high-quality punching.

Description

[Technical field]

[0001] The utility model relates to the technical field of film punching, in particular to a film punching head and a film punching machine. [Background technology]

[0002] Film is made of plastic (commonly used plastics include polypropylene, polyester, nylon, etc.) as the main raw material. Because of its cheapness and light weight, it is mainly used to be processed into common items in life such as plastic bags and express bags. In the process of producing express bags, a punching device is often required to perform a punching operation on them. For example, the prior art CN103359527A discloses a film punching machine, including a film punching device, and the film punching device includes a punching mechanism and a power mechanism; the punching mechanism includes a die, a stamping module and a punch, and the punch is arranged below the power mechanism to cooperate with the die to achieve punching. Under ideal circumstances, the waste after punching will fall into the waste box below. Since the film is very thin and light, the edge of the film after punching is easily lifted up by the punch, affecting the subsequent punching operation.

[0003] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. [Contents of the utility model]

[0004] The utility model aims to solve the above technical problems and provides a film punching head and a film punching machine thereof, wherein the film will not be lifted up by the punching teeth after punching, thereby achieving high-quality punching.

[0005] The utility model is implemented as follows: a film punching head comprises a punching cylinder, a pressing cylinder and an elastic member; the punching cylinder is a hollow structure, the outer circle of the punching cylinder is provided with an upper limit ring and a lower limit ring, and the bottom end of the punching cylinder is formed with punching teeth; the pressing cylinder comprises an integrally formed cylinder top surface and a cylinder wall, the cylinder top surface is formed with a sleeve hole for the punching cylinder to pass through, the inner diameter of the sleeve hole is smaller than the outer diameter of the lower limit ring, and the cylinder top surface is sleeved between the upper limit ring and the lower limit ring; the elastic member is sleeved on the outer surface of the punching cylinder and is located between the upper limit ring and the cylinder top surface.

[0006] Furthermore, an annular groove is formed at the bottom end of the cylindrical wall, and an elastic ring gasket is installed in the annular groove.

[0007] Furthermore, it also includes a T-shaped inner top column movably assembled in the punching column, the T-shaped inner top column includes a cylindrical surface and a cylindrical body; an inner limit ring is formed in the middle of the inner wall of the punching column, and the cylindrical surface movably presses against the inner limit ring.

[0008] Furthermore, the upper limit ring is detachably connected to the punching column, and the lower limit ring is integrally formed with the punching column.

[0009] Furthermore, an internal thread is formed on the inner wall of the punching cylinder.

[0010] Furthermore, the punching teeth are distributed in a circular array at the bottom end of the punching cylinder.

[0011] Furthermore, the punching column is made of metal material.

[0012] Furthermore, the pressing cylinder is integrally injection-molded using plastic material.

[0013] Furthermore, the elastic member is a spring.

[0014] On the other hand, a film punching machine includes multiple film punching heads, multiple drivers, a mounting frame, and a punching platform; the mounting frame is installed on the punching platform, and multiple drivers are fixedly installed side by side on the mounting frame, and the multiple drivers respectively drive the multiple film punching heads to move up and down to perform punching operations.

[0015] The advantages of the utility model are that when the film punching head punches holes, the pressing cylinder presses the film, so that the film is in a tensioned state, which is conducive to accurate punching; after the punching is completed, the film around the hole will not be lifted up along with the punching cylinder, and the subsequent punching operation will not be affected, thereby achieving high-quality punching.

Brief Description of the Drawings

[0016] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of a film punching head in the utility model.

[0018] Figure 2 It is one of the cross-sectional views of the film punching head in the utility model.

[0019] Figure 3 This is the second cross-sectional view of the film punching head in the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of multiple states of the film punching head during the punching operation in the utility model.

[0021] Figure 5 It is a structural schematic diagram of a film punching machine in the utility model.

[0022] Film punching machine 1000, film punching head 100, driver 200, mounting frame 300, punching platform 400,

[0023] Punching cylinder 1, upper limit ring 11, lower limit ring 12, punching teeth 13, inner limit ring 14,

[0024] Pressing cylinder 2, cylinder top surface 21, cylinder wall 22, sleeve hole 23, elastic ring gasket 24,

[0025] Elastic parts 3,

[0026] T-shaped inner top column 4, cylindrical surface 41, and cylindrical body 42. [Specific implementation method]

[0027] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0029] See also Figures 1 to 4 As shown, the utility model provides a film punching head 100, including a punching cylinder 1, a pressing cylinder 2, and an elastic member 3. The punching cylinder 1 is a hollow structure, and an upper limit ring 11 and a lower limit ring 12 are provided on the outer circumference of the punching cylinder 1, and a punching tooth 13 is formed at the bottom end of the punching cylinder 1. The punching teeth 13 are distributed in a circular array at the bottom end of the punching cylinder 1; the wall thickness of the punching cylinder 1 at the punching teeth 13 is less than the wall thickness of the punching cylinder 1, and the smaller the wall thickness of the punching teeth 13, the higher the punching quality. The pressing cylinder 2 includes an integrally formed cylinder top surface 21 and a cylindrical wall 22, and the cylinder top surface 21 is formed with a sleeve hole 23 for the punching cylinder 1 to pass through, and the inner diameter of the sleeve hole 23 is smaller than the outer diameter of the lower limit ring 12, and the cylinder top surface 21 is sleeved between the upper limit ring 11 and the lower limit ring 12. The elastic member 3 is sleeved on the outer surface of the punching column 1 and is located between the upper limit ring 11 and the cylinder top surface 21 .

[0030] When the film punching head 100 of the utility model punches a hole, the pressing cylinder 2 presses the film to put the film in a tensioned state, which is helpful for accurate punching; after the punching is completed, the film around the hole will not be lifted up along with the punching cylinder 1, and the subsequent punching operation will not be affected.

[0031] In the present invention, an annular groove is formed at the bottom end of the cylindrical wall 22, and an elastic ring gasket 24 is installed in the annular groove. The setting of the elastic ring gasket 24 makes the contact between the pressing cylinder 2 and the film more flexible, avoiding the film from being crushed. Preferably, the elastic ring gasket 24 is a rubber ring gasket made of rubber.

[0032] In this utility model, reference is made to the attached Figure 3 As shown, it also includes a T-shaped inner push column 4 movably assembled in the punching column 1, and the T-shaped inner push column 4 is used to push out the waste film after punching. The T-shaped inner push column 4 includes a cylindrical surface 41 and a cylindrical body 42; when the elastic member 3 is in a non-compressed state, the distance between the top surface of the cylindrical surface 41 and the bottom surface of the output shaft is recorded as a gap H.

[0033] An inner limit ring 14 is formed in the middle of the inner wall of the punching cylinder 1, and the cylindrical surface 41 is movably pressed against the inner limit ring 14. The length A of the cylinder 42 is greater than the distance between the top surface of the inner limit ring 14 and the bottom of the punching tooth 13, which is recorded as the distance length B. When the elastic member 3 is in a non-compressed state, the bottom surface of the cylinder 42 passes through the bottom surface of the punching cylinder 1, and the passing distance is recorded as C. Preferably, the length of the gap H is greater than the passing distance C, so that the T-shaped inner top column 4 has room for movement, thereby avoiding interference between the T-shaped inner top column 4 and the output shaft of the driver 200 during punching, resulting in the problem that the punching tooth 13 cannot contact the film.

[0034] In the present invention, the outer diameter of the cylindrical surface 41 is larger than the inner diameter of the inner limit ring 14 , and the outer diameter of the cylindrical surface 41 is smaller than the inner diameter of the punching column 1 , so that the T-shaped inner top column 4 can move up and down smoothly inside the punching column 1 .

[0035] In this utility model, reference is made to the attached Figure 3 As shown, the upper limit ring 11 is detachably connected to the punching cylinder 1, and the lower limit ring 12 is integrally formed with the punching cylinder 1. Preferably, the upper limit ring 11 is an elastic snap ring, and an annular groove is formed on the outer circumferential surface of the punching cylinder 1, and the elastic snap ring is assembled in the annular groove. The design of the annular groove and the elastic snap ring facilitates the assembly of the film punching head 100.

[0036] The assembly steps of the film punching head 100 are as follows: first, the pressing cylinder 2 is sleeved on the outside of the punching cylinder 1 until the top surface 21 of the cylinder abuts against the upper and lower limit rings 12, then the elastic part 3 is inserted, and finally the upper limit ring 11 (elastic clamp) is snapped into the annular groove to just press the elastic part 3; then the T-shaped inner top column 4 is installed into the punching cylinder 1, so that the cylindrical surface 41 abuts against the inner limit ring 14; finally, the punching cylinder 1 is threadedly connected to the output shaft of the driver 200.

[0037] In the present invention, the punching column 1 is made of metal material, such as stainless steel, copper, iron, etc.

[0038] In the utility model, the pressing cylinder 2 is integrally injection-molded using plastic material.

[0039] In the present utility model, the elastic member 3 is a spring.

[0040] Reference Figure 4 As shown, the punching operation of the film punching head 100 of the utility model includes the following four steps:

[0041] Step 1: Before punching, the film punching head 100 is in a normal state.

[0042] Step 2: When punching, the driver 200 drives the film punching head 100 to descend, the bottom surface of the cylindrical surface 41 of the T-shaped inner top column 4 presses against the waste area, the bottom end of the cylindrical wall 22 presses the film, and the punching teeth 13 continue to move downward to punch holes in the film.

[0043] Step three: After punching, the driver 200 retracts the punching cylinder 1 and returns it to its upward position. Under the action of elastic force, the bottom end of the cylindrical wall 22 continues to press the film. At this time, the punching cylinder 1 does not drive the T-shaped inner top column 4 to rise together, but makes the T-shaped inner top column 4 continue to press the waste area. When the punching teeth 13 are higher than the film, the cylindrical wall 22 separates from the film; the punching cylinder 1 continues to rise so that the top surface of the inner limit ring 14 presses against the bottom surface of the cylindrical surface 41, and the punching cylinder 1 drives the T-shaped inner top column 4 to rise together.

[0044] Step 4: After the punching is completed, the cylindrical wall 22 is separated from the film, and finally the film punching head 100 is in a normal state.

[0045] Reference Figure 5 As shown, the utility model also includes a film punching machine 1000, which includes a plurality of film punching heads 100, a plurality of drivers 200, a mounting frame 300, and a punching platform 400; the mounting frame 300 is mounted on the punching platform 400, and a plurality of drivers 200 are fixedly mounted side by side on the mounting frame 300, and the plurality of drivers 200 respectively drive the plurality of film punching heads 100 to move up and down to perform punching operations.

[0046] As a specific embodiment, the upper portion of the inner wall of the punching cylinder 1 is formed with an internal thread, and the output shaft of the driver 200 is formed with an external thread, which is used for threaded and detachable connection with the punching cylinder 1. The connection method between the film punching head 100 and the driver 200 of the utility model is not limited to this embodiment, and any connection method that can realize the driver 200 driving the film punching head 100 to move up and down to punch holes is acceptable.

[0047] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A film punching head, characterized in that: It includes a punching column, a pressing cylinder and an elastic part; The punching cylinder is a hollow structure, an upper limit ring and a lower limit ring are provided on the outer circle of the punching cylinder, and punching teeth are formed at the bottom end of the punching cylinder; The pressing cylinder comprises an integrally formed cylinder top surface and a cylindrical wall, the cylinder top surface is formed with a sleeve hole for the punching column to pass through, the inner diameter of the sleeve hole is smaller than the outer diameter of the lower limit ring, and the cylinder top surface is sleeved between the upper limit ring and the lower limit ring; The elastic piece is sleeved on the outer surface of the punching column and is located between the upper limit ring and the top surface of the cylinder.

2. The film punching head according to claim 1, characterized in that: An annular groove is formed at the bottom end of the cylindrical wall, and an elastic ring pad is installed in the annular groove.

3. The film punching head according to claim 2, characterized in that: It also includes a T-shaped inner top column movably assembled in the punching column, the T-shaped inner top column includes a cylindrical surface and a cylindrical body; an inner limit ring is formed in the middle of the inner wall of the punching column, and the cylindrical surface movably presses against the inner limit ring.

4. The film punching head according to claim 1, characterized in that: The upper limit ring is detachably connected to the punching column, and the lower limit ring is integrally formed with the punching column.

5. The film punching head according to claim 4, characterized in that: An internal thread is formed on the inner wall of the punching column.

6. The film punching head according to claim 5, characterized in that: The punching teeth are distributed in a circular array at the bottom end of the punching column.

7. The film punching head according to claim 6, characterized in that: The punching column is made of metal material.

8. The film punching head according to claim 1, characterized in that: The pressing cylinder is integrally injection-molded by using plastic material.

9. The film punching head according to claim 1, characterized in that: The elastic member is a spring.

10. A film punching machine, characterized in that: It includes a plurality of film punching heads as described in any one of claims 1 to 9, a plurality of drivers, a mounting frame, and a punching platform; the mounting frame is installed on the punching platform, a plurality of drivers are fixedly installed side by side on the mounting frame, and the plurality of drivers respectively drive the plurality of film punching heads to move up and down to perform punching operations.

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