Film cutting device
Through the magnetic attraction mechanism of the thin film cutting device, the problem of bending of the thin film cutting edge of the film was solved, and the flat cutting of the film and the high -quality production of disposable gloves were realized.
Patent Information
- Application Number
- CN202411757394.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-01-28
AI Technical Summary
When the blade cuts the film, the edge of the film tends to one side and bends, affecting the production of disposable gloves.
Design a thin film cutting device that uses the magnetic attraction mechanism of the short -iron core and long iron core to achieve flat cutting of the film through the drawing needle and cutting line.
The flat cutting of the edge of the film is achieved, avoiding the bending of the edges, and improving the quality of disposable gloves.
Smart Images
Figure CN119369489A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of film processing, in particular to film cutting equipment. Background Art
[0002] The film used to make disposable gloves needs to be cut into several long strips after being formed, and then the long strips of film are made into disposable gloves. The existing technology uses a blade to cut the film. When the blade cuts the film, the edge of the blade will lean to one side, causing the edge of the film to bend to one side. When making disposable gloves later, there is a gap between the two layers of film, making it difficult to fit them together completely. Summary of the invention
[0003] The technical problem solved by the present invention is that when a blade cuts a film, the edge of the film will be inclined to one side, causing the edge of the film to bend to one side, which is not conducive to the subsequent production of disposable gloves.
[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a thin film cutting device, comprising a short iron core and a long iron core, characterized in that: the short iron core and the long iron core are respectively located on both sides of the thin film, the short iron core is provided with a first small-diameter pinhole, the long iron core is provided with a second small-diameter pinhole and a large-diameter pinhole, the large-diameter pinhole and the second small-diameter pinhole are connected end to end, the center line of the second small-diameter pinhole coincides with the center line of the first small-diameter pinhole, a lead needle is matched in the second small-diameter pinhole, the front end of the lead needle points to the first small-diameter pinhole, the tail end of the lead needle is fixedly connected to the cutting line, the tail of the cutting line is fixedly connected to the large-diameter needle, the outer diameter of the large-diameter needle is larger than the outer diameter of the lead needle, and the large-diameter needle is matched in the large-diameter pinhole;
[0005] The length of the lead needle is greater than the gap between the short iron core and the long iron core, and the length of the cutting wire is greater than the gap between the short iron core and the long iron core;
[0006] The first coil is wound around the short iron core. When the first coil is energized, the short iron core generates magnetic force to attract the lead needle to pass through the film and go deep into the first small-diameter needle hole. The large-diameter needle that moves with the cutting line abuts against the tail end of the second small-diameter needle hole to tighten the cutting line.
[0007] According to the above technical solution, the film is conveyed forward by the conveying roller, passes through the gap between the short iron core and the long iron core, and the first coil is energized through the wire. The first coil generates magnetic force in the short iron core, attracting the lead needle in the long iron core to enter the first small-diameter needle hole of the short iron core, and the lead needle passes through the film. At this time, the cutting line is located in the gap between the short iron core and the long iron core, the conveying roller conveys the film forward, and the cutting line cuts the film, dividing the whole film into several strips of film for making disposable gloves.
[0008] The front end convex part of the short iron core is provided with a first limiting sleeve, which limits the front end of the lead needle which goes deep into the first small diameter pinhole. The first limiting sleeve makes the lead needle stop at the first limiting sleeve to prevent the lead needle from leaving the first small diameter pinhole.
[0009] A second limiting sleeve is installed on the convex part of the tail end of the long iron core, and the second limiting sleeve limits the tail end of the large-diameter needle to prevent the large-diameter needle from detaching from the long iron core.
[0010] The front end of the long iron core is wound with the second coil, the tail of the long iron core is provided with a permanent magnet, the permanent magnet is arranged on the second limiting sleeve, the tail of the lead needle protrudes backward from the second coil, the magnetic force of the permanent magnet on the large diameter needle makes the large diameter needle located at the tail of the long iron core, and the magnetic force generated by the second coil makes the lead needle located at the front of the long iron core. In this way, before the first coil is powered, the lead needle and the large diameter needle stay in the long iron core. After the first coil is powered, the magnetic force on the lead needle overcomes the magnetic force of the second coil and the magnetic force of the permanent magnet, and drills into the first small diameter needle hole of the short iron core.
[0011] The short iron core is clamped by a first clamp which is mounted on a first strip plate; the long iron core is clamped by a second clamp which is mounted on a second strip plate; the first strip plate and the second strip plate are mounted on a support which is mounted on a frame of the film cutting device.
[0012] The first clamp comprises a first upper clamp and a first lower clamp, the first upper clamp is fixedly connected to the first strip plate, and the second clamp comprises a second upper clamp and a second lower clamp, the second upper clamp is fixedly connected to the second strip plate.
[0013] As an improvement, the tail end of the large diameter needle is connected to a wire, which passes through the second limiting sleeve and is connected to a power source, and the power source heats the cutting wire to make it a hot wire. In this way, when the cutting wire cuts the film, the edge after cutting is smoother.
[0014] Compared with the blade cutting in the prior art, the edge of the film after wire cutting is smooth, which is conducive to the subsequent production of disposable gloves. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention will be further described below in conjunction with the accompanying drawings:
[0016] Figure 1 is a schematic diagram of a film cutting device;
[0017] Figure 2 for Figure 1 Left view of
[0018] Figure 3 for Figure 1 Middle AA section view;
[0019] Figure 4 for Figure 3Schematic diagram of the middle lead needle 30 penetrating into the short iron core 10;
[0020] Figure 5 It is a schematic diagram of the short iron core 10 being installed on the first strip plate 61;
[0021] Figure 6 It is a schematic diagram of the long iron core 20 being installed on the second strip member 62;
[0022] Figure 7 is an appearance diagram of the short iron core 10;
[0023] Figure 8 FIG. 2 is an appearance diagram of the long iron core 20 .
[0024] Explanation of symbols in the figure:
[0025] 10. short iron core; 11. first small diameter pinhole; 12. first coil; 13. first limit sleeve;
[0026] 20. long iron core; 21. second small-diameter pinhole; 22. large-diameter pinhole; 23. second limit sleeve; 24. second coil; 25. permanent magnet;
[0027] 30. Lead needle; 31. Cutting wire; 32. Large diameter needle;
[0028] 40. first clamp; 41. first upper clamp; 42. first lower clamp;
[0029] 50. second clamp; 51. second upper clamp; 52. second lower clamp;
[0030] 61. first strip plate; 62. second strip plate; 63. support;
[0031] 90. Film. DETAILED DESCRIPTION
[0032] like Figure 3 , Figure 4A thin film cutting device includes a short iron core 10 and a long iron core 20, characterized in that: the short iron core and the long iron core are respectively located on both sides of a thin film 90, the short iron core is provided with a first small-diameter pinhole 11, the long iron core is provided with a second small-diameter pinhole 21 and a large-diameter pinhole 22, the large-diameter pinhole and the second small-diameter pinhole are connected end to end, the center line of the second small-diameter pinhole coincides with the center line of the first small-diameter pinhole, a lead needle 30 is matched in the second small-diameter pinhole, the front end of the lead needle points to the first small-diameter pinhole, the tail end of the lead needle is fixedly connected to a cutting line 31, the tail of the cutting line is fixedly connected to a large-diameter needle 32, the outer diameter of the large-diameter needle is larger than the outer diameter of the lead needle, and the large-diameter needle is matched in the large-diameter pinhole. The length of the lead needle is larger than the gap between the short iron core and the long iron core, and the length of the cutting line is larger than the gap between the short iron core and the long iron core. The first coil 12 is wound around the short iron core 10. When the first coil is energized, the short iron core generates magnetic force to attract the lead needle 30 to pass through the film and go deep into the first small-diameter needle hole 11. The large-diameter needle that moves with the cutting line abuts against the tail end of the second small-diameter needle hole to tighten the cutting line 31.
[0033] A first limiting sleeve 13 is installed on the front end convex portion of the short iron core 10 , and the first limiting sleeve limits the front end of the lead needle 30 that penetrates into the first small-diameter needle hole 11 .
[0034] A second limiting sleeve 23 is installed on the convex portion at the tail end of the long iron core 20 , and the second limiting sleeve limits the tail end of the large-diameter needle 32 .
[0035] The front end of the long iron core 20 is wound with the second coil 24, and the tail of the long iron core is provided with a permanent magnet 25, which is arranged on the second limiting sleeve 23. The tail of the lead needle 30 protrudes backward from the second coil, and the magnetic force of the permanent magnet on the large diameter needle 32 makes the large diameter needle located at the tail of the long iron core. The magnetic force generated by the second coil makes the lead needle located at the front of the long iron core.
[0036] Combination Figure 1 , Figure 2 , Figure 5 , Figure 6 The short iron core 10 is clamped by the first clamp 40, and the first clamp is installed on the first strip plate 61. The long iron core 20 is clamped by the second clamp 50, and the second clamp is installed on the second strip plate 62. The first strip plate and the second strip plate are installed on the support 63, and the support is installed on the frame of the film cutting equipment.
[0037] The first clamp 40 includes a first upper clamp 41 and a first lower clamp 42 , and the first upper clamp is fixedly connected to the first strip plate 61 . The second clamp 50 includes a second upper clamp 51 and a second lower clamp 52 , and the second upper clamp is fixedly connected to the second strip plate 62 .
[0038] refer to Figure 3 , Figure 4Before the first coil 12 is powered, the lead needle 30 and the large diameter needle 32 stay in the long iron core 20 under the magnetic force of the second coil 24 and the magnetic force of the permanent magnet 25. After the first coil 12 is powered, the magnetic force on the lead needle 30 overcomes the magnetic force of the second coil 24 and the magnetic force of the permanent magnet 25, and drills into the first small diameter needle hole 11 of the short iron core 10. The lead needle 30 passes through the film 90 conveyed forward by the conveying roller, and the cutting line 31 is located in the gap between the short iron core 10 and the long iron core 20. The conveying roller conveys the film 90 forward, and the cutting line 31 cuts the film, dividing the whole film into a plurality of strips of film for making disposable gloves.
[0039] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.
Claims
1. A thin film cutting device, comprising a short iron core (10) and a long iron core (20), characterized in that: The short iron core and the long iron core are respectively located on both sides of the film (90), the short iron core is provided with a first small-diameter pinhole (11), the long iron core is provided with a second small-diameter pinhole (21) and a large-diameter pinhole (22), the large-diameter pinhole and the second small-diameter pinhole are connected end to end, the center line of the second small-diameter pinhole coincides with the center line of the first small-diameter pinhole, a lead needle (30) is matched in the second small-diameter pinhole, the front end of the lead needle points to the first small-diameter pinhole, the tail end of the lead needle is fixedly connected to the cutting line (31), the tail of the cutting line is fixedly connected to the large-diameter needle (32), the outer diameter of the large-diameter needle is greater than the outer diameter of the lead needle, and the large-diameter needle is matched in the large-diameter pinhole; The length of the lead needle is greater than the gap between the short iron core and the long iron core, and the length of the cutting wire is greater than the gap between the short iron core and the long iron core; A first coil (12) is wound around the short iron core (10). When the first coil is energized, the short iron core generates a magnetic force to attract the lead needle (30) to penetrate the film and penetrate into the first small-diameter needle hole (11). As the cutting line moves, the large-diameter needle abuts against the tail end of the second small-diameter needle hole to tighten the cutting line (31).
2. The film cutting device according to claim 1, characterized in that: A first limiting sleeve (13) is installed on the front end convex portion of the short iron core (10), and the first limiting sleeve limits the front end of the lead needle (30) that penetrates into the first small-diameter needle hole (11).
3. The film cutting device according to claim 1, characterized in that: A second limiting sleeve (23) is installed on the convex portion at the tail end of the long iron core (20), and the second limiting sleeve limits the tail end of the large-diameter needle (32).
4. The film cutting device according to claim 3, characterized in that: The front end of the long iron core (20) is wound with a second coil (24), the tail of the long iron core is provided with a permanent magnet (25), the permanent magnet is arranged on the second limiting sleeve (23), the tail of the lead needle (30) protrudes backwards from the second coil, the magnetic force of the permanent magnet on the large diameter needle (32) causes the large diameter needle to be located at the tail of the long iron core, and the magnetic force generated by the second coil causes the lead needle to be located at the front of the long iron core.
5. The film cutting device according to claim 1, characterized in that: The short iron core (10) is clamped by a first clamp (40), and the first clamp is mounted on a first strip plate (61). The long iron core (20) is clamped by a second clamp (50), and the second clamp is mounted on a second strip plate (62). The first strip plate and the second strip plate are mounted on a support (63), and the support is mounted on a frame of the film cutting device.
6. The film cutting device according to claim 5, characterized in that: The first clamp (40) comprises a first upper clamp (41) and a first lower clamp (42), the first upper clamp is fixedly connected to the first strip plate (61), and the second clamp (50) comprises a second upper clamp (51) and a second lower clamp (52), the second upper clamp is fixedly connected to the second strip plate (62).