Automatic material changing device of gilding press

Abstract

The utility model relates to the technical field of packaging equipment, and particularly discloses an automatic material changing device of a gilding press. Comprising a frame, a paper feeding roller pair, feeding discs and a welding mechanism, the paper feeding roller pair is rotationally arranged between two side plates of the frame, the feeding discs are symmetrically arranged on the upper face and the lower face of a sliding way in a sliding mode respectively, paper shafts are detachably arranged at the tails of the feeding discs, paper clamps are arranged at the heads of the feeding discs, and the welding mechanism is arranged between the two side plates of the frame; an upper feeding disc and a lower feeding disc are arranged to alternately supply materials to the gilding press, a welding mechanism is arranged, when one roll of gilding foil is used up, a new layer of gilding foil and an old layer of gilding foil are welded in a welding mode, feeding of the new paper is completed in the mode that the old paper is taken with the new paper, and a locking mechanism and a detachable paper shaft are further arranged. Loading is facilitated when the gilding press runs, shutdown is not needed in the material changing process, and the working efficiency is improved; a worker can pull out the feeding disc for operation, and the danger of material changing operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to an automatic material changing device for a hot stamping machine. Background Art

[0002] Hot stamping is a common process in the packaging and printing industry. During hot stamping, a hot stamping roller needs to be made according to a designed pattern, and an electroplated aluminum film is hot-dip coated on the surface of the packaging paper shell through a hot pressing process. The hot stamping paper used is generally a rolled film. When loading hot stamping paper, the existing hot stamping machine needs to be stopped first. The worker uses a blade to cut the remaining material between the feed roller and the hot stamping paper roller, and then takes out the exhausted hot stamping paper roller for replacement. The machine needs to be stopped during the material replacement process, and manual drilling is required to operate in the material bin of the hot stamping machine. There are relatively large safety hazards during the operation. In addition, the machine must be stopped and the material must be replaced when the hot stamping paper is used up, which affects production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic material changing device for a hot stamping machine to solve the problems existing in the prior art.

[0004] The utility model is implemented by the following technical scheme: an automatic material changing device of a hot stamping machine, comprising a frame, a pair of paper feed rollers, a feeding tray and a welding mechanism, a pair of paper feed rollers is rotatably provided between the two side plates of the frame, a slide is provided on the frame, a feeding tray is symmetrically slidably provided on the upper and lower surfaces of the slide, a paper shaft is detachably provided at the tail of the feeding tray, and a paper clamp is provided at the head of the feeding tray; a welding mechanism is provided between the two side plates of the frame, the welding mechanism comprises a swing frame, a hot pressing head, a driving mechanism and a connecting shaft, a swing frame is symmetrically provided above the upper feeding tray and below the lower feeding tray, the free ends of the two swing arms of the swing frame are fixed with connecting shafts, the connecting shaft passes through the side plates on both sides of the frame and is transmission-connected to the driving mechanism, a hot pressing head is fixedly installed on the crossbeam of the swing frame, the hot pressing head swings and is placed between the paper clip and the paper shaft of the feeding tray, and the swing arm of the swing frame is in active contact with the free end of the paper clip swing arm.

[0005] Furthermore, the two swing arms of the paper clip are hinged to the two sides of the feed tray respectively, the horizontal plate of the paper clip is in movable contact with the horizontal plate at the head of the feed tray, a torsion spring is sleeved on the hinge shaft between the paper clip and the feed tray, and the two ends of the torsion spring are respectively in contact with the feed tray and the paper clip, and a roller is provided at the free end of each of the two swing arms of the paper clip, and the swing arms of the swing frame are in movable contact with the roller.

[0006] Furthermore, a locking hook is provided on the feed tray, the middle part of the locking hook is hinged to the feed tray, the top of the locking hook is provided with a barb that is movably engaged with the free end of the paper clip swing arm, and the bottom of the locking hook is elastically connected to the feed tray through a tension spring.

[0007] Furthermore, more than two hot pressing heads are arranged side by side on the crossbeam of the swing frame of the welding mechanism, and a guide shaft is vertically provided on the crossbeam of the swing frame. The two ends of the hot pressing head are slidingly sleeved on the guide shaft, and a spring is sleeved on the guide shaft, and the spring is abutted between the hot pressing head and the crossbeam of the welding mechanism.

[0008] Furthermore, the driving mechanism includes a disc, a driving motor, a connecting rod and a rocker arm. The connecting shaft passes through the frame and is fixedly connected to the rocker arm. The driving motor is fixed on the frame between the upper and lower connecting shafts on the same side. The disc is fixed on the output shaft of the driving motor. Two connecting rods are hinged at relative positions on the disc, and the other end of the connecting rod is hinged to the free end of the rocker arm.

[0009] Furthermore, an open slot is provided at the tail of the feed tray, and a protrusion is integrally formed on the feed tray and at the bottom of the open slot. A top screw is provided through the protrusion, and the paper shaft is slidably set in the open slot. The paper shaft is detachably connected to the feed tray through the top screw.

[0010] Furthermore, it also includes a locking mechanism, which includes a spring card, a fixed card, a slider and a compression spring. A slot is provided on the frame, and a slide groove is provided at the slot position on the outside of the frame. The spring card is slidably arranged in the slot, and a slider is slidably provided in the slide groove. The slider is fixedly connected to the spring card, and a compression spring is abutted between the top surface of the slider and the slide groove. A first slot is provided at the position of the spring card on the feed tray; a second slot is provided horizontally on both sides of the feed tray, and the opening direction of the second slot is parallel to the slide. A fixed card is provided on the inner side of the frame at the position corresponding to the second slot.

[0011] The advantages of this utility model are as follows: by setting up two upper and lower feeding trays, the hot stamping machine is fed alternately, and a welding mechanism is provided. When one roll of hot stamping paper is used up, the old and new layers of hot stamping paper are welded together, and the new paper is fed in by using the old paper to carry the new paper. Furthermore, a locking mechanism and a detachable paper shaft are provided, which are convenient for loading while the hot stamping machine is running. The material changing process does not require the machine to be shut down, thereby improving work efficiency. Workers can pull out the feeding tray for operation, thereby reducing the risk of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the local structure of the welding mechanism.

[0014] Figure 3 It is a schematic diagram of the local structure of the paper clip and the welding mechanism.

[0015] Figure 4 It is a schematic diagram of the local structure of the locking hook.

[0016] Figure 5Schematic diagram of the local structure of the driving mechanism.

[0017] Figure 6 It is a schematic diagram of the local structure of the locking mechanism.

[0018] In the figure: frame 1, paper feed roller 2, feed tray 3, welding mechanism 4, locking mechanism 5, slide 101, notch 102, slide 103, paper shaft 301, paper clip 302, torsion spring 303, roller 304, locking hook 305, opening slot 306, protrusion 307, top screw 308, first slot 309, second slot 310, swing frame 401, hot pressing head 402, driving mechanism 403, connecting shaft 404, guide shaft 405, spring 406, disc 407, driving motor 408, connecting rod 409, rocker arm 410, spring clip 501, fixing clip 502, slider 503, compression spring 504. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] like Figure 1The figure shows: an automatic material changing device for a hot stamping machine, comprising a frame 1, a pair of paper feed rollers 2, a feeding tray 3 and a welding mechanism 4. A pair of paper feed rollers 2 is rotatably provided between the two side plates of the frame 1. The pair of paper feed rollers 2 is transmission-connected to the driving structure of the hot stamping machine. The hot stamping paper is clamped between the two rollers. When paper needs to be fed to the hot stamping machine, the two rollers rotate in opposite directions to pull the hot stamping paper out from the paper roll; a slide 101 is provided on the frame 1, and a feeding tray 3 is symmetrically slidably provided on the upper and lower surfaces of the slide 101. The upper and lower layers of the feeding trays 3 are symmetrically arranged, and a hot stamping paper roll is installed on each feeding tray 3, which can be fed alternately; a paper shaft 301 is detachably provided at the tail end of the feeding tray 3, and a hot stamping paper roll is manually sleeved on the paper shaft 301. It should be noted that the paper shaft 301 adopts the same paper shaft structure as that used in the existing hot stamping machine, and a mechanism for clamping the paper roll is provided on the paper shaft 301 to prevent the hot stamping paper roll from rotating freely. The paper roll will rotate around the paper shaft 301 to release the hot stamping paper only when an external force is applied to pull the end of the hot stamping paper; an opening slot 306 is provided at the tail end of the feeding tray 3, and a protrusion 307 is integrally formed on the feeding tray 3 and at the bottom of the opening slot 306. A top screw 308 is provided through the protrusion 307, and the paper shaft 301 is slidably set in the opening slot 306. The paper shaft 301 is detachably connected to the feeding tray 3 through the top screw 308; a paper clip 303 is provided at the head of the feeding tray 3 02. The two swing arms of the paper clip 302 are hinged to the two sides of the feeding tray 3 respectively. The horizontal plate of the paper clip 302 is in movable contact with the horizontal plate at the head of the feeding tray 3, which is used to temporarily fix the free end of the hot stamping paper. A torsion spring 303 is sleeved on the hinge axis between the paper clip 302 and the feeding tray 3. The two ends of the torsion spring 303 are in contact with the feeding tray 3 and the paper clip 302 respectively. The torsion spring 303 applies pressure to the paper clip 302 to press the horizontal plate of the paper clip 302 and the horizontal plate at the head of the feeding tray 3 tightly.

[0022] When loading paper into the feeding tray 3, first loosen the top screw 308 and remove the paper shaft 301, pass the hot stamping paper roll through the paper shaft 301 and fix it, slide the paper shaft 301 with the hot stamping paper roll to the bottom along the opening slot 306, tighten the top screw 308 to fix the paper shaft 301, then pull out a part of the hot stamping paper, press the end of the hot stamping paper between the horizontal plate of the paper clamp 302 and the horizontal plate at the head of the feeding tray 3, and keep the torsion spring 303 in a compressed state so that the end of the hot stamping paper is temporarily fixed to the paper clamp 302.

[0023] like Figure 2As shown: a welding mechanism 4 is provided between the two side plates of the frame 1, and the welding mechanism 4 includes a swing frame 401, a hot pressing head 402, a driving mechanism 403 and a connecting shaft 404. The swing frames 401 are symmetrically provided above the upper feeding tray 3 and below the lower feeding tray 3. The free ends of the two swing arms of the swing frame 401 are fixed with connecting shafts 404. The connecting shafts 404 pass through the side plates on both sides of the frame 1 and are connected to the driving mechanism 403. When one roll of hot stamping paper is almost used up, the driving mechanism 403 can drive the upper and lower swing arms to rotate. The frame 401 swings back and forth, and a hot pressing head 402 is fixedly installed on the crossbeam of the swinging frame 401. The hot pressing head 402 adopts a PTC electric heating element to generate heat, and its hot melting temperature is controlled by electric control. The hot pressing head 402 swings and is placed between the paper clip 302 and the paper shaft 301 of the feeding tray 3. When the two swinging frames 401 are relatively close to each other, the upper and lower hot pressing heads 402 are relatively close to each other, and the hot stamping papers on the upper and lower layers of the feeding frames 3 are hot-melt-joined. As the paper feeding roller 2 continues to feed, the old paper drives the welded new paper to continue feeding the hot stamping machine.

[0024] like Figure 3 As shown: In order to ensure that the two downward hot pressing heads 402 can be stably pressed, more than two hot pressing heads 402 are arranged side by side on the crossbeam of the swing frame 401, and a guide shaft 405 is vertically provided on the crossbeam of the swing frame 401. The two ends of the hot pressing heads 402 are slidingly sleeved on the guide shaft 405, and the hot pressing heads 402 can slide up and down along the guide shaft 405. A spring 406 is sleeved on the guide shaft 405, and the spring 406 is in contact with the hot pressing head 402 and the crossbeam of the welding mechanism 4. When the two lower swing frames 401 are close to each other, the new and old layers of hot stamping paper are sandwiched between the upper and lower sets of hot pressing heads 402. In order to ensure that the new and old layers of hot stamping paper are stably attached, the swing frame 401 will continue to swing downward a little to compress the spring 406 and apply a certain pressure to the hot pressing head 402 to ensure that the new and old layers of hot stamping paper are fully joined during the hot melting process.

[0025] like Figure 4As shown: a roller 304 is provided at each free end of the two swing arms of the paper clip 302, and the swing arm of the swing frame 401 is in active contact with the roller 304. When the swing frame 401 swings downward, the swing arm of the swing frame 401 is connected to the roller 304, pressing the paper clip 302 up using the lever principle to release the hot stamping paper; a locking hook 305 is provided on the feeding tray 3, and the middle part of the locking hook 305 is hinged to the feeding tray 3, and a barb is provided on the top of the locking hook 305 to movably engage with the free end of the swing arm of the paper clip 302, and the bottom of the locking hook 305 is elastically connected to the feeding tray 3 by a tension spring. When the swing frame 401 presses the paper clip 302, the free end of the swing arm of the paper clip 302 drops, and the barb on the top of the locking hook 305 exceeds the top of the swing arm of the paper clip 302 When the hot stamping paper is fused with the old paper, the locking hook 305 is engaged with the paper clip 302, so that the paper clip 302 remains in an open state. After the hot stamping head 402 completes the hot melting, the swing frame 401 opens in the opposite direction, and the hot stamping head 402 is separated from the hot stamping paper. At this time, the new paper and the old paper are fused together, and the paper clip 302 is engaged with the locking hook 305. The free end of the new paper is also released from the paper clip 302. The paper feeding roller 2 can smoothly use the old paper to drive the new paper to complete the uninterrupted material replacement. It should be noted that there is a partial overlap between the old paper and the new paper. The preset program of the hot stamping machine can be used to control the idling feeding for a distance to completely use up the overlapping part of the old paper and the new paper. This method is a technology well known to those skilled in the art. Its control program and method are commonly used methods in the prior art, so they will not be described in detail.

[0026] like Figure 5 As shown: the driving mechanism 403 includes a disc 407, a driving motor 408, a connecting rod 409 and a rocker arm 410. The connecting shaft 404 passes through the frame 1 and is fixedly connected to the rocker arm 410. The driving motor 408 is fixedly provided on the frame 1 between the upper and lower connecting shafts 404 on the same side. The disc 407 is fixedly provided on the output shaft of the driving motor 408. Two connecting rods 409 are hinged at relative positions on the disc 407. The other end of the connecting rod 409 is hinged to the free end of the rocker arm 410. The driving motor 408 adopts a stepping motor to conveniently control the rotation angle of the disc 407. By adopting the above structure, a group of motors can be used to drive the upper and lower swing frames 401 to move simultaneously.

[0027] like Figure 6As shown: In order to facilitate the disassembly of the feeding tray 3, a locking mechanism 5 is also provided, which includes a spring card 501, a fixed card 502, a slider 503 and a compression spring 504. A notch 102 is provided on the frame 1, and a slide groove 103 is provided at the position of the notch 102 on the outer side of the frame 1. The spring card 501 is slidably arranged in the notch 102, and the spring card 501 can slide up and down along the notch 102. A slider 503 is slidably provided in the slide groove 103, and the slider 503 is fixedly connected to the spring card 501. A compression spring 504 is abutted between the top surface of the slider 503 and the slide groove 103, and the compression spring 504 presses the spring card 501 connected to the slider 503 downward, and a first slot 309 is provided at the position of the feeding tray 3 corresponding to the spring card 501. When the feeding tray 3 is pushed in along the slideway 101, the feeding tray 3 is When the feeding tray 3 contacts the spring card 501, it continues to be pushed in. The spring card 501 is pushed up and then falls into the first card slot 309. The compression spring 504 presses the spring card 501 tightly in the first card slot 309, which plays a role of temporary fixation; second card slots 310 are opened horizontally on both sides of the feeding tray 3, and the opening direction of the second card slot 310 is parallel to the slide 101. A fixing card 502 is provided on the inner side of the frame 1 at the position corresponding to the second card slot 310. When the feeding tray 3 is pushed in, the fixing card 502 slides into the second card slot 310 and is fixed by the two fixing points of the spring card 501 and the fixing card 502, so that the feeding tray 3 is stably fixed on the frame 1, so that it will not loosen during feeding, and when material change is required, the feeding tray 3 can be pulled out for material change operation without tools, thereby improving work efficiency.

Claims

1. An automatic material changing device for a hot stamping machine, characterized in that: The invention comprises a frame (1), a pair of paper feed rollers (2), a feeding tray (3) and a welding mechanism (4); the pair of paper feed rollers (2) is rotatably provided between two side plates of the frame (1); a slideway (101) is provided on the frame (1); a feeding tray (3) is symmetrically slidably provided on the upper and lower surfaces of the slideway (101); a paper shaft (301) is detachably provided at the tail of the feeding tray (3); and a paper clamp (302) is provided at the head of the feeding tray (3); a welding mechanism (4) is provided between the two side plates of the frame (1); the welding mechanism (4) comprises a swing frame (401), a hot pressing head (402), a driving mechanism (403) and a connecting rod (404). A shaft (404) is symmetrically provided on the upper side of the upper feeding tray (3) and the lower side of the lower feeding tray (3). The free ends of the two swing arms of the swing frame (401) are fixed with connecting shafts (404). The connecting shafts (404) pass through the side plates on both sides of the frame (1) and are transmission-connected with the driving mechanism (403). A hot pressing head (402) is fixedly installed on the crossbeam of the swing frame (401). The hot pressing head (402) is swingably placed between the paper clip (302) of the feeding tray (3) and the paper shaft (301). The swing arms of the swing frame (401) are in active contact with the free ends of the swing arms of the paper clip (302).

2. The automatic material changing device for a hot stamping machine according to claim 1, characterized in that: The two swing arms of the paper clip (302) are respectively hinged to the two sides of the feeding tray (3), and the transverse plate of the paper clip (302) is in active contact with the transverse plate at the head of the feeding tray (3). A torsion spring (303) is sleeved on the hinge axis between the paper clip (302) and the feeding tray (3), and the two ends of the torsion spring (303) are respectively in contact with the feeding tray (3) and the paper clip (302). A roller (304) is respectively provided at the free end of the two swing arms of the paper clip (302), and the swing arms of the swing frame (401) are in active contact with the rollers (304).

3. The automatic material changing device for a hot stamping machine according to claim 2, characterized in that: A locking hook (305) is provided on the feed tray (3), the middle portion of the locking hook (305) is hinged to the feed tray (3), a barb is provided on the top of the locking hook (305) and is movably engaged with the free end of the swing arm of the paper clip (302), and the bottom of the locking hook (305) is elastically connected to the feed tray (3) via a tension spring.

4. The automatic material changing device for a hot stamping machine according to claim 1, characterized in that: Two or more hot pressing heads (402) are arranged side by side on the cross beam of the swing frame (401) of the welding mechanism (4), a guide shaft (405) is vertically provided on the cross beam of the swing frame (401), both ends of the hot pressing head (402) are slidably sleeved on the guide shaft (405), a spring (406) is sleeved on the guide shaft (405), and the spring (406) is in contact between the hot pressing head (402) and the cross beam of the welding mechanism (4).

5. The automatic material changing device for a hot stamping machine according to claim 1, characterized in that: The driving mechanism (403) comprises a disk (407), a driving motor (408), a connecting rod (409) and a rocker arm (410); a connecting shaft (404) passes through the frame (1) and is fixedly connected to the rocker arm (410); a driving motor (408) is fixedly provided on the frame (1) between two upper and lower connecting shafts (404) on the same side; a disk (407) is fixedly provided on the output shaft of the driving motor (408); two connecting rods (409) are hingedly connected to relative positions on the disk (407); and the other end of the connecting rod (409) is hingedly connected to the free end of the rocker arm (410).

6. The automatic material changing device for a hot stamping machine according to claim 1, characterized in that: An open slot (306) is provided at the rear of the feed tray (3), a protrusion (307) is integrally formed on the feed tray (3) and at the bottom of the open slot (306), a top screw (308) is provided through the protrusion (307), and the paper shaft (301) is slidably arranged in the open slot (306). The paper shaft (301) is detachably connected to the feed tray (3) via the top screw (308).

7. An automatic material changing device for a hot stamping machine according to any one of claims 1 to 6, characterized in that: The locking mechanism (5) further comprises a spring clamp (501), a fixing clamp (502), a slider (503) and a compression spring (504). A notch (102) is provided on the frame (1), a slide groove (103) is provided at the position of the notch (102) outside the frame (1), the spring clamp (501) is slidably arranged in the notch (102), a slider (503) is slidably provided in the slide groove (103), and the slider (503) and the spring clamp (501) are connected to each other. 501) is fixedly connected, a compression spring (504) is abutted between the top surface of the slider (503) and the slide groove (103), and a first clamping groove (309) is opened at a position of the feeding disk (3) corresponding to the spring clamp (501); second clamping grooves (310) are opened horizontally on both sides of the feeding disk (3), and the opening direction of the second clamping groove (310) is parallel to the slideway (101), and a fixed clamp (502) is provided on the inner side of the frame (1) at a position corresponding to the second clamping groove (310).

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