Film feeding device of film die-cutting machine

Abstract

The utility model discloses a film feeding device of a film die-cutting machine, and relates to the technical field of die-cutting machines, the film feeding device comprises a film feeding structure and a traction structure, the film feeding structure comprises a conveying roller and a conveying compression roller; the traction structure comprises a pressing plate, a supporting plate, an erecting strip, a sliding seat, a plate sheet, a second spring, a sliding sleeve, a screw rod and a first spring, an anti-skid rubber mat is pasted to the bottom of the pressing plate, a guide notch is machined in the top of the erecting strip, and the section of the guide notch is a right triangle; according to the technical key points, a pressing plate is pressed downwards, a first spring is compressed, the pressing plate is matched with a supporting plate, one end of a film sent out between a conveying pressing roller and a conveying roller is clamped and fixed at the first time, and when a sliding seat is subsequently guided by the inclined inner wall of the bottom of a guide notch, the film clamped by the pressing plate and the supporting plate is pulled; by means of the film cutting device, the problems that when a film penetrates out of a conveying compression roller and a conveying roller, the film cannot be guided in time, the conveying angle is affected, the size of a cut product can be guaranteed only by using a larger film, and waste is likely to be caused can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field, and specifically to a film feeding device of a film die-cutting machine. Background Technique

[0002] A die-cutting machine, also known as a beer machine, a cutting machine, and a numerical control stamping machine, is mainly used for die-cutting, indentation, hot stamping, laminating, and automatic waste discharging of some non-metallic materials, self-adhesive labels, EVA, double-sided tape, electronics, mobile phone gaskets, etc. The die-cutting machine uses steel knives, metal molds, and steel wires to apply a certain pressure through an impression plate to cut the printed matter or cardboard into a certain shape. It is an important device for post-printing packaging processing and forming.

[0003] With the rapid development of the printing and packaging industry, the scale of enterprises is constantly expanding. The application market of fully automatic flat-bed die-cutting machines will continue to expand. In contrast, the sales market of semi-automatic flat-bed die-cutting and indentation machines will further decline. In addition to reasons such as low productivity and high labor intensity of operators, the main reason for its decline is the poor safety and the easy occurrence of work-related injury accidents.

[0004] The application range of die-cutting machines is relatively wide. As one of the main processing objects, automotive films also have good application prospects. When automotive films are produced and processed, they will be cut to size according to the application position of the film to meet subsequent usage requirements.

[0005] The patent document with the publication number CN217780284U, a film feeding device of a film die-cutting machine, improves the stability of transmission by setting a lifting mechanism. The lifting mechanism drives the upper pressure rollers on both sides of the device to move up and down through a lifting plate. The upper pressure rollers cooperate with the lower pressure rollers through a pressing mechanism to clamp the film and prevent it from falling off.

[0006] At the same time, by setting a first drive roller and a second drive roller, the first drive roller is located between the lower pressure rollers, and the second drive roller is located below the movable plate and moves with the lifting mechanism. The film can pass through the lower end of the second drive roller. After the movable plate moves downward, the second drive roller is staggered from the first drive roller, and the film moves along the first drive roller and the second drive roller in a curve to achieve the purpose of tensioning, improving the functionality of the device.

[0007] However, through research, it is found that there are certain drawbacks in the existing bowl-shaped plug assembly tools during use:

[0008] The existing film feeding device of a film die-cutting machine uses a lifting mechanism to clamp the film and is controlled by a first drive roller and a second drive roller to achieve the purpose of tensioning the film. However, in the actual application process, at the front end of die-cutting, a die-cutting knife is used for slitting. The film transported to the bottom of the die-cutting knife is prone to a slight deviation in the transport angle, resulting in the film to be die-cut being inclined, which is not conducive to die-cutting the final product on the smallest-sized film and is likely to cause a large amount of waste. Summary of the Invention

[0009] To overcome the deficiencies of the prior art, an embodiment of the present application provides a film feeding device for a film die-cutting machine. By pressing the pressure plate from top to bottom, the first spring can be compressed between the pressure plate and the sliding seat, enabling the bottom of the pressure plate to cooperate with the top of the support plate, and clamping and fixing one end of the film sent out between the conveying pressure roller and the conveying roller in the first place. When the sliding seat is subsequently guided by the inclined inner wall at the bottom of the guiding slot and compresses the second spring between the plate and the erection bar, the film clamped by the pressure plate and the support plate can be pulled, achieving the technical effect of preventing the film from being unable to be timely guided when passing through the conveying pressure roller and the conveying roller, affecting its conveying angle, and resulting in the inability to cut fixed-size products from the film during subsequent cutting.

[0010] The technical solution adopted by the embodiment of the present application to solve its technical problems is:

[0011] A film feeding device for a film die-cutting machine includes a film feeding structure and a traction structure, and the traction structure is arranged on one side of the film feeding structure;

[0012] Among them, the film feeding structure includes a conveying roller, a conveying pressure roller is arranged on the top of the conveying roller, and vertical frames are arranged at both ends of the conveying pressure roller and the conveying roller;

[0013] The traction structure includes a pressure plate, an anti-slip rubber pad is pasted on the bottom of the pressure plate, the central area at the bottom of the protective rubber pad is recessed towards the bottom, a support plate is arranged at the bottom of the pressure plate, erection bars are arranged at both ends of the support plate and the pressure plate, a guiding slot is processed on the top of the erection bar, the cross-section of the guiding slot is a right triangle, a sliding seat is slidably connected to the top of the erection bar, a plate is inserted and connected inside the sliding seat, a second spring is arranged between the plate and the erection bar, a sliding sleeve is integrally formed at one end of the plate, a connecting shaft rod is rotatably connected inside the sliding sleeve, screw rods are processed at the bottoms of both ends of the pressure plate, a first spring is sleeved outside the screw rods, the screw rods are slidably connected inside one side of the sliding seat, and a nut is connected to one end of the screw rods to prevent the screw rods from detaching from the inside of the sliding seat.

[0014] Preferably, the sliding seat is arranged in an F shape, the sliding seat is buckled on the top of the erection bar, and the inner wall of the top of the sliding seat is adapted to the inner wall of the bottom of the guiding slot.

[0015] Preferably, a first horizontal slot and a second vertical slot are processed inside the erection bar, the first horizontal slot and the second vertical slot are internally connected, both ends of the sliding sleeve slide inside the first horizontal slot on both sides respectively, and the plate slides inside the second vertical slot.

[0016] Preferably, a guide rod is sleeved inside the second spring. The guide rod is pin-connected to the inside of both ends of the erection strip and supports the compression and relaxation of the second spring inside the second groove.

[0017] Preferably, one end of the connecting shaft rod extends into the inside of one end of the support plate and is in rolling connection therewith. A positioning ring groove is machined in the middle of the connecting shaft rod, and a snap ring is clamped inside the positioning ring groove. The snap ring is located between the support plate and the erection strip.

[0018] Preferably, a die-cutting table is arranged at the bottom of the support plate. A die-cutting boss is machined at the top of one side of the die-cutting table. The bottom of one side of the die-cutting table and the die-cutting boss is adapted to the surface of the conveying roller, and the top plane of the die-cutting boss is lower than the highest point of the conveying roller.

[0019] Preferably, the cross-section of the support plate is U-shaped. The support plate is adaptively connected to one side of the die-cutting boss. The pressing plate presses the film sent out between the conveying pressure roller and the conveying roller from top to bottom against the top of both ends of the support plate.

[0020] Preferably, the pressing plate can move from top to bottom by means of hydraulic cylinder control, electric push rod control, and moving along with the die-cutting knife holder of the die-cutting machine.

[0021] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0022] First, the film feeding device of the film die-cutting machine of the present utility model can compress the first spring between the pressing plate and the sliding seat by pressing the pressing plate from top to bottom, so that the bottom of the pressing plate cooperates with the top of the support plate to clamp and fix one end of the film sent out between the conveying pressure roller and the conveying roller in the first place. When the sliding seat is subsequently guided by the inclined inner wall at the bottom of the guide groove and compresses the second spring between the plate piece and the erection strip, the film clamped by the pressing plate and the support plate can be pulled to prevent the film from being unable to be guided in time when passing through the conveying pressure roller and the conveying roller, affecting its conveying angle, resulting in the inability to cut fixed-size products from the film during subsequent cutting (that is, when cutting fixed-size products, a larger film needs to be used, which is likely to cause waste).

[0023] Second, the film feeding device of the film die-cutting machine of the present utility model is provided with a mutually adapted die-cutting boss and a support plate on the top of the die-cutting table. When the film passes through between the conveying pressure roller and the conveying roller, it can be placed on a platform with a flat surface, and there will be no situation of partial warping or abnormal conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present utility model;

[0025] Figure 2It is a cross-sectional view of the erection strip of the present utility model;

[0026] Figure 3 It is the present utility model Figure 2 An enlarged schematic view of part A in it;

[0027] Figure 4 It is a structural schematic diagram of the present utility model in a state where the support plate and the sliding sleeve are disengaged;

[0028] Figure 5 For the present utility model Figure 4 An enlarged schematic view of part B in it.

[0029] Reference numerals: 1, conveying pressure roller; 2, conveying roller; 3, vertical frame; 4, pressing plate; 5, sliding seat; 6, die-cutting boss; 7, guiding notch; 8, die-cutting table; 9, erection strip; 10, first groove; 11, second groove; 12, support plate; 13, sliding sleeve; 14, connecting shaft rod; 15, screw; 16, first spring; 17, guiding rod; 18, second spring; 19, plate piece; 20, positioning ring groove. Specific embodiments

[0030] Embodiment 1:

[0031] A film feeding device of a film die-cutting machine, as Figures 1 - 5 shown, includes a film feeding structure and a traction structure arranged on one side of the film feeding structure. The film feeding structure includes a conveying roller 2, a conveying pressure roller 1 is arranged on the top of the conveying roller 2, and vertical frames 3 are arranged at both ends of the conveying pressure roller 1 and the conveying roller 2;

[0032] As Figures 1 to 3 shown, the traction structure includes a pressing plate 4. An anti-slip rubber pad is pasted on the bottom of the pressing plate 4 (the central area at the bottom of the protective rubber pad is recessed towards the bottom, so that when the pressing plate 4 presses down, the film is not pressed on the surface of the die-cutting boss 6, affecting the cooperation between the pressing plate 4 and the support plate 12 to pull the film). A support plate 12 is arranged at the bottom of the pressing plate 4. Erection strips 9 are arranged at both ends of the support plate 12 and the pressing plate 4, and a guiding notch 7 is machined on the top of the erection strip 9;

[0033] Among them, the cross-section of the guiding notch 7 is a right triangle, and the sliding seat 5 is arranged in an F shape. When the sliding seat 5 is buckled on the top of the erection strip 9, by means of the inner wall of the top of the sliding seat 5 being adapted to the inner wall of the bottom of the guiding notch 7, pressure can be applied to the top of the sliding seat 5 to make the sliding seat 5 slide along the inclined inner wall at the bottom of the guiding notch 7 (its sliding direction is from the high point at one end to the low point at one end);

[0034] As Figure 3As shown, a sliding seat 5 is connected to the top of the erection bar 9 in a sliding manner. A plate piece 19 is connected to the inside of the sliding seat 5 in a plug-in manner. A second spring 18 is arranged between the plate piece 19 and the erection bar 9. One end of the plate piece 19 is integrally formed with a sliding sleeve 13. A connecting shaft rod 14 is connected to the inside of the sliding sleeve 13 in a rolling manner. Screws 15 are processed at the bottoms of both ends of the pressing plate 4. A first spring 16 is sleeved on the outside of the screws 15;

[0035] Among them, by making the screw 15 be connected to the inside of one side of the sliding seat 5 in a sliding manner and connecting a nut to one end thereof, the detachment of the screw 15 from the inside of the sliding seat 5 is restricted. When pressure is applied to the top of the pressing plate 4, the pressing plate 4 can slide from the top to the bottom. The pressure is transmitted to the sliding seat 5 by means of the first spring 16, so that the sliding seat 5 slides along the inclined inner wall at the bottom of the guiding groove 7, thereby compressing the second spring 18 (in this process, the downward pressing pressing plate 4 cooperates with the supporting plate 12 to clamp one end of the film between the conveying pressure roller 1 and the conveying roller 2 and synchronously pull it to one side);

[0036] Secondly, in order to provide a storage space for the second spring 18 and mount the plate piece 19 and the sliding sleeve 13 into the erection bar 9, as Figure 1 and Figure 3 shown, a first horizontal groove 10 and a second vertical groove 11 are processed inside the erection bar 9. By making the inside of the first groove 10 and the second groove 11 communicate with each other, when the sliding seat 5 slides along the inclined inner wall at the bottom of the guiding groove 7, both ends of the sliding sleeve 13 can slide inside the two sides of the first groove 10 respectively, while the plate piece 19 slides inside the second groove 11 to control the compression state of the second spring 18;

[0037] Furthermore, in order to stably compress and expand the second spring 18 between the plate piece 19 and the erection bar 9, so that after the pressing plate 4 is pressed down and reset, the sliding seat 5 slides from one end to the other end on the top of the erection bar 9, as Figure 3 shown, a guiding rod 17 is sleeved inside the second spring 18. By making the guiding rod 17 be pinned to the inside of both ends of the erection bar 9, it can support the compression and expansion of the second spring 18 inside the second groove 11;

[0038] At the same time, when the downward pressing pressing plate 4 cooperates with the supporting plate 12 to clamp one end of the film sent out between the conveying pressure roller 1 and the conveying roller 2, by means of the sliding seat 5 sliding along the inclined inner wall at the bottom of the guiding groove 7 on the top of the erection bar 9 and using the movement of the plate piece 19 along with the sliding seat 5 to compress the second spring 18, in order to enable the connecting shaft rod 14 rolling inside the sliding sleeve 13 to drive the supporting plate 12 to pull the film, as Figure 4 and Figure 5As shown, a positioning ring groove 20 is machined in the middle of the connecting shaft rod 14. A snap ring is clamped inside the positioning ring groove 20. By inserting one end of the connecting shaft rod 14 into the inside of one end of the support plate 12 and making it roll-connected therewith, and making the snap ring located between the support plate 12 and the erection strip 9, when the two ends of the connecting shaft rod 14 roll inside the support plate 12 and the sliding sleeve 13 respectively, it can slide out from any one of them, ensuring the connection effect.

[0039] Embodiment 2:

[0040] On the basis of Embodiment 1, as Figures 1 - 4 shown, this embodiment is the support structure at the bottom of the support plate 12. A die-cutting table 8 is arranged at the bottom of the support plate 12, and a die-cutting boss 6 is machined at the top of one side of the die-cutting table 8;

[0041] Among them, by making the bottom sides of one side of the die-cutting table 8 and the die-cutting boss 6 adapt to the surface of the conveying roller 2, it can be ensured that when the film passes through between the conveying roller 2 and the conveying pressure roller 1, it will not sag due to gravity and fall into the gap between the die-cutting boss 6 and the conveying roller 2, affecting the conveying work of the film;

[0042] The cross-section of the support plate 12 is U-shaped. The support plate 12 is adaptively connected to one side of the die-cutting boss 6. When the support plate 12 is buckled towards one side of the die-cutting boss 6, it can be ensured that the top planes of the support plate 12 and the die-cutting boss 6 form a whole plane; it is convenient for the pressing plate 4 to press the film sent out between the conveying pressure roller 1 and the conveying roller 2 from the top to the bottom on the tops of both ends of the support plate 12; at the same time, it can make the top plane of the die-cutting boss 6 lower than the highest point of the conveying roller 2, so that when the film passes through between the conveying roller 2 and the conveying pressure roller 1, it can be sent to the top of the die-cutting boss 6 and be clamped and pulled by the pressing plate 4 and the support plate 12 immediately;

[0043] In some examples, the way for the pressing plate 4 to move from the top to the bottom can adopt hydraulic cylinder control, electric push rod control and moving along with the die-cutting knife holder of the die-cutting machine. Finally, it is ensured that the pressing plate 4 moves towards the bottom, presses both sides of the film on the tops of both ends of the support plate 12, and after pulling the film to one side, the die-cutting knife of the die-cutting machine completes the die-cutting work on the top of the die-cutting boss 6.

[0044] In the film feeding device of a film die-cutting machine of the present utility model, a fixed die-cutting boss 6 and a movable support plate 12 (the support plate 12 and the die-cutting boss 6 are adapted to form a flat plate) are arranged on the top of the die-cutting table 8, and a pressing plate 4 supported by two sliding seats 5 is arranged on the top of one side of the support plate 12. When the pressing plate 4 is squeezed from the top to the bottom, the pressing plate 4 first moves from the bottom to the bottom, compresses the first spring 16 between the pressing plate 4 and the sliding seat 5 (the screw rod 15 slides inside one end of the sliding seat 5), so that the bottom of the pressing plate 4 cooperates with the top of the support plate 12, and immediately clamps and fixes one end of the film sent out between the conveying pressure roller 1 and the conveying roller 2;

[0045] Subsequently, continue to apply pressure to the top of the bottom pressing plate 4 (the anti-slip rubber pad at the bottom of the pressing plate 4 is compressed, providing the basic condition for the pressing plate 4 to continue to move downward under pressure). When the sliding seat 5 receives enough force to overcome the resistance of the second spring 18 between the sheet 19 and the erection bar 9, the sliding seat 5 slides along the inclined inner wall at the bottom of the guiding notch 7 on the top of the erection bar 9 from one end to the other end. By means of the movement of the sheet 19 following the sliding seat 5, when the second spring 18 is compressed, and by using the sliding sleeve 13 sliding inside the first slot 10 to drive one end of the connecting shaft rod 14 to roll inside it, while the other end rolls inside one end of the support plate 12, the support plate 12 and the pressing plate 4 that cooperate to hold the film can pull the film on the top of the die-cutting table 8.

[0046] It should be noted that during use, after the pressing plate 4 and the support plate 12 hold the film, the prerequisite for continuing to move downward can be changed from the compressible anti-slip rubber pad to a telescopic form at the part where the pressing plate 4 contacts the film and at the part where the pressing plate 4 is connected to the sliding seat 5 (for example, disassembling the pressing plate 4 into upper and lower parts, connecting the top to the two sliding seats 5, and connecting the bottom to the film, with a spring between the top and the bottom).

[0047] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly illustrating the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A film feeding device for a thin film die cutting machine, characterized in that, Comprising: Film feeding structure; Traction structure, which is arranged on one side of the film feeding structure; Wherein, the film feeding structure includes a conveying roller (2), a conveying pressure roller (1) is arranged on the top of the conveying roller (2), and vertical frames (3) are arranged at both ends of the conveying pressure roller (1) and the conveying roller (2); The traction structure includes a pressing plate (4), an anti-slip rubber pad is pasted on the bottom of the pressing plate (4), the central area of the bottom of the protective rubber pad is recessed towards the bottom, a support plate (12) is arranged at the bottom of the pressing plate (4), erection bars (9) are arranged at both ends of the support plate (12) and the pressing plate (4), a guiding notch (7) is machined on the top of the erection bar (9), the cross section of the guiding notch (7) is a right triangle, a sliding seat (5) is slidably connected to the top of the erection bar (9), a plate piece (19) is plugged and connected inside the sliding seat (5), a second spring (18) is arranged between the plate piece (19) and the erection bar (9), a sliding sleeve (13) is integrally formed at one end of the plate piece (19), and a connecting shaft rod (14) is rotatably connected inside the sliding sleeve (13); Screws (15) are machined at the bottoms of both ends of the pressing plate (4), a first spring (16) is sleeved outside the screws (15), the screws (15) are slidably connected inside one side of the sliding seat (5), and nuts are connected to one ends of the screws (15) to prevent the screws (15) from detaching from the inside of the sliding seat (5).

2. The film feeding device of a film die-cutting machine according to claim 1, characterized in that: The sliding seat (5) is arranged in an F shape, the sliding seat (5) is buckled on the top of the erection bar (9), and the inner wall of the top of the sliding seat (5) is adapted to the inner wall of the bottom of the guiding notch (7).

3. The film feeding device of a thin film die cutting machine according to claim 1, characterized in that: A first horizontal slot (10) and a second vertical slot (11) are machined inside the erection bar (9), and the inside of the first slot (10) and the second slot (11) are communicated with each other; Wherein, both ends of the sliding sleeve (13) slide inside the two sides of the first slot (10) respectively, and the plate piece (19) slides inside the second slot (11).

4. The film feeding device of a thin film die-cutting machine according to claim 1, characterized in that: A guiding rod (17) is sleeved inside the second spring (18), the guiding rod (17) is pinned to the inside of both ends of the erection bar (9) and supports the second spring (18) to be compressed and relaxed inside the second slot (11).

5. The film feeding device of a thin film die cutting machine according to claim 1, wherein: One end of the connecting shaft rod (14) extends into the inside of one end of the support plate (12) and is rotatably connected thereto. A positioning ring groove (20) is machined in the middle of the connecting shaft rod (14), and a snap ring is clamped inside the positioning ring groove (20), and this snap ring is located between the support plate (12) and the erection bar (9).

6. The film feeding device of a thin film die cutting machine according to claim 1, characterized in that: A die-cutting table (8) is arranged at the bottom of the support plate (12), a die-cutting boss (6) is machined on the top of one side of the die-cutting table (8), the bottom of one side of the die-cutting table (8) and the die-cutting boss (6) are adapted to the surface of the conveying roller (2), and the top plane of the die-cutting boss (6) is lower than the highest point of the conveying roller (2).

7. The film feeding device of a film die-cutting machine according to claim 1, characterized in that: The cross-section of the support plate (12) is U-shaped. The support plate (12) is adaptively connected to one side of the die-cutting boss (6). The pressing plate (4) presses the film sent out between the conveying pressure roller (1) and the conveying roller (2) from top to bottom against the tops of both ends of the support plate (12).

8. The film feeding device of a thin film die-cutting machine according to claim 7, characterized in that: The way the pressing plate (4) moves from top to bottom can be controlled by a hydraulic cylinder, an electric push rod, or by following the movement of the die-cutting tool holder of the die-cutting machine.

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