Pre-tensioning device of gilding press

Abstract

The utility model belongs to the technical field of gilding equipment, and particularly relates to a pre-tensioning device of a gilding press, which comprises a base. The top of the base is fixedly connected with a fixing frame. The top of the fixing frame is fixedly connected with an air cylinder; the bottom of the air cylinder is fixedly connected with a fixed block; the bottom of the fixing block is fixedly connected with a pressing block; a pair of first fixing plates is fixedly connected to the side wall of the fixing block. A winding roller is mounted on the inner side wall of the first fixing plate; a pair of second fixing plates is fixedly connected to the side wall, away from the first fixing plate, of the fixing block. A fixing assembly is arranged in the middle of the second fixing plate; a discharging roller is installed in the fixing assembly. A buffer assembly is arranged at the top of the base; the buffering assembly is fixedly connected with a discharging table. By means of the structure, the fixing frame and the supporting rollers are arranged, the aluminum foil can be pre-tensioned during hot stamping, and therefore the tension between the aluminum foil is increased, and the situation that the middle of the aluminum foil droops, wrinkles are generated during hot stamping, and the hot stamping effect is affected is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot stamping equipment, in particular to a pre-tensioning device of a hot stamping machine. Background Art

[0002] A hot stamping machine is a device used to apply metal foil to printed matter or other materials. It transfers the metal foil to the surface of the material through heat and pressure to form a golden or silver pattern. It is widely used in packaging, labels, greeting cards, book covers and other fields to increase the visual appeal and texture of the product.

[0003] During the hot stamping process, the anodized aluminum foil contacts the hot stamping plate and the substrate. The heating of the electric heating plate makes the hot stamping plate have a certain amount of heat. The anodized aluminum is heated to melt the hot-melt dyed resin layer and adhesive. The aluminum layer is peeled off from the anodized aluminum base film and transferred to the substrate at the same time. During long-term use and observation, it was found that during the hot stamping process, the hot stamping machine transfers the aluminum foil to the substrate through pressure and heating, and the aluminum foil is usually in a state of winding and unwinding. When the winding and unwinding position stroke is long, the middle part of the aluminum foil will sag, resulting in wrinkles in the aluminum foil during the downward pressure process, which causes uneven hot stamping.

[0004] To this end, the utility model provides a pre-tensioning device for a hot stamping machine. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background art, a pre-tensioning device for a hot stamping machine is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problem is as follows: the pre-tensioning device of the hot stamping machine described in the utility model comprises a base; a fixing frame is fixedly connected to the top of the base; a cylinder is fixedly connected to the top of the fixing frame; a fixing block is fixedly connected to the bottom of the cylinder; a pressure block is fixedly connected to the bottom of the fixing block; a pair of first fixing plates are fixedly connected to the side wall of the fixing block; a winding roller is installed on the inner side wall of the first fixing plate; a pair of second fixing plates are fixedly connected to the side wall of the fixing block away from the first fixing plate; a fixing assembly is provided in the middle of the second fixing plate; the fixing assembly A feeding roller is installed in the component; a buffer assembly is provided on the top of the base; a feeding platform is fixedly connected to the buffer assembly; two pairs of third fixed plates are fixedly connected to the side walls of the fixed block; a locking assembly is provided in the middle of the third fixed plate; a pair of fixed frames are installed on the locking assembly; a pair of side walls of the fixed frames are connected to support rollers for common rotation; through the above structure, the fixed frames and support rollers are provided, and the aluminum foil can be pre-tightened during hot stamping, so that the tension between the aluminum foils becomes larger, so as to reduce the sagging of the middle part of the aluminum foil, which causes wrinkles during hot stamping and affects the hot stamping effect.

[0007] Preferably, a pair of first fixed plate side walls are slidably connected to the first slider; the fixed block side walls are fixedly connected to a pair of spring telescopic rods; the ends of the spring telescopic rods are fixedly connected to the side walls of the first slider; the side walls of the first slider are rotatably connected to the first pressure roller; through the above structure, the spring telescopic rods and the first pressure roller are set, which can squeeze the aluminum foil when winding the aluminum foil, so as to improve the tightness of the aluminum foil when winding, and at the same time reduce the curling and overlapping of the aluminum foil when winding, resulting in distortion of the aluminum foil at the printing position, causing uneven hot stamping.

[0008] Preferably, the side walls of the pressing block are hinged with two pairs of support arms through torsion springs; the two pairs of support arms are symmetrically distributed; each pair of side walls of the support arms are rotatably connected to a second pressing roller; the second pressing roller is in an eight-shaped structure and expands to both sides of the pressing block; through the above structure, the support arms and the second pressing roller can be set to flatten the aluminum foil and the substrate by pulling during hot stamping, so as to reduce the occurrence of wrinkles during hot stamping and cause uneven hot stamping.

[0009] Preferably, the locking assembly includes a bidirectional screw; the bidirectional screw is rotatably connected to the middle portion of a pair of third fixed plates; the middle portion of the bidirectional screw is threadedly connected to a pair of second sliders; the second slider is arranged close to the inner side of the third fixed plate; the fixing frame is rotatably connected to the middle portion of the bidirectional screw; the fixing frame contacts the outer side of the third fixed plate; a pair of first slide rails are fixed to the inner side of the third fixed plate; the first slide rails are correspondingly arranged to the second slider; the third fixed plate is made of tough material; through the above structure, the bidirectional screw is arranged with the second slider and the first slide rail, and the fixing frames on both sides can be synchronously locked and unlocked by rotating the bidirectional screw, so as to reduce the traditional method of using separate fixing tools, resulting in more cumbersome fixing, so as to improve convenience in use.

[0010] Preferably, a pair of second slide rails are fixedly connected to the top of the unloading table; a pull plate is slidably connected to the inside of the pair of second slide rails; through the above structure, the second slide rails and the pull plate are set, which can facilitate the removal and placement of the substrate from under the pressing block during hot stamping. By keeping away from the pressing block, the occurrence of burns and inconvenience in operation caused by the small gap between the pressing block and the substrate can be reduced.

[0011] Preferably, the buffer assembly includes a support plate; the support plate is fixed to the bottom of the discharge table; a plurality of damping spring shock absorbers are fixed to the bottom of the support plate; the damping spring shock absorber is fixed to the top of the base; through the above structure, the support plate and the damping spring shock absorber are arranged to reduce vibration during hot stamping, so as to reduce the shaking of the substrate and the aluminum foil caused by vibration, resulting in uneven hot stamping.

[0012] Preferably, the fixing assembly includes a pair of slots; the slots are opened in the middle of the second fixing plate; a pair of snap rings are fixed to the side walls of the second fixing plate; the snap rings are arranged corresponding to the slots; a bolt is installed in the middle of the snap ring; through the above structure, the slots, snap rings and bolts are arranged, which can facilitate the fixation of the discharge roller, so as to reduce the use of more fixing tools such as chucks in the traditional way, resulting in a more complicated disassembly and assembly process.

[0013] Preferably, the second pressing roller is made of rubber; through the above structure, setting the second pressing roller to be made of rubber can increase the friction between the second pressing roller and the aluminum foil and the printing material, so as to reduce the slipping of the second pressing roller and improve the flattening effect of the aluminum foil and the printing material.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The pre-tensioning device of a hot stamping machine described in the present invention can pre-tension the aluminum foil during hot stamping by providing a fixed frame and a support roller, thereby increasing the tension between the aluminum foils to reduce sagging in the middle of the aluminum foil, resulting in wrinkles during hot stamping that affect the hot stamping effect.

[0016] 2. The pre-tensioning device of the hot stamping machine described in the utility model, by providing a spring telescopic rod and a first pressure roller, can squeeze the aluminum foil when winding the aluminum foil, so as to improve the tightness of the aluminum foil when winding, and at the same time reduce the curling and overlapping of the aluminum foil when winding, which causes the aluminum foil at the printing position to twist and cause uneven hot stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the support roller in the utility model;

[0020] Figure 3 This is a schematic structural diagram of the winding roller in the utility model;

[0021] Figure 4 It is a structural diagram of the unloading table in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the unwinding roller in the utility model.

[0023] Legend:

[0024] 1. Base; 11. Fixed frame; 12. Cylinder; 13. Fixed block; 14. Pressure block; 15. First fixed plate; 16. Winding roller; 17. Second fixed plate; 18. Unloading roller; 19. Unloading table; 110. Third fixed plate; 111. Fixed frame; 112. Support roller; 2. First slider; 21. Spring telescopic rod; 22. First pressure roller; 3. Support arm; 31. Second pressure roller; 4. Bidirectional screw; 41. Second slider; 42. First slide rail; 5. Second slide rail; 51. Pull plate; 6. Support plate; 61. Damping spring shock absorber; 7. Slot; 71. Snap ring; 72. Bolt. DETAILED DESCRIPTION

[0025] 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.

[0026] Specific examples are given below.

[0027] like Figures 1 to 5As shown, a pre-tensioning device for a hot stamping machine according to an embodiment of the present invention comprises a base 1; a fixing frame 11 is fixedly connected to the top of the base 1; a cylinder 12 is fixedly connected to the top of the fixing frame 11; a fixing block 13 is fixedly connected to the bottom of the cylinder 12; a pressure block 14 is fixedly connected to the bottom of the fixing block 13; a pair of first fixing plates 15 are fixedly connected to the side wall of the fixing block 13; a winding roller 16 is installed on the inner side wall of the first fixing plate 15; a pair of second fixing plates 17 are fixedly connected to the side wall of the fixing block 13 away from the first fixing plate 15 The second fixed plate 17 is provided with a fixing assembly in the middle; a feeding roller 18 is installed in the fixing assembly; a buffer assembly is provided on the top of the base 1; a feeding table 19 is fixedly connected to the buffer assembly; two pairs of third fixed plates 110 are fixedly connected to the side walls of the fixed block 13; a locking assembly is provided in the middle of the third fixed plate 110; a pair of fixing frames 111 are installed on the locking assembly; the side walls of the pair of fixing frames 111 are connected to the supporting roller 112 for common rotation; when working, the aluminum foil roll is installed on the feeding roller 1 when hot stamping 8, then fix the unwinding roller 18 on the second fixed plate 17, then pull open the aluminum foil roll so that the middle part passes around the support rollers 112 on both sides and passes under the fixed block 13, and then wind the end part around the take-up roller 16. At this time, the support roller 112 will stretch the aluminum foil from the inside of the aluminum foil, thereby forming a tensile support force, and then place the printing material on the unwinding table 19, and then start the cylinder 12 to stretch and drive the fixed block 13 to move toward the printing material below, and then hot stamp the aluminum foil on the printing material, and then start the take-up roller 16 to tighten the aluminum foil. For winding, the unused aluminum foil can be pulled to the top of the unloading table 19, and then subsequent hot stamping can be carried out. When it is necessary to adjust the tension of the aluminum foil, the expansion angle of the support roller 112 can be changed or the height of the support roller 112 relative to the substrate can be moved on the locking assembly. Through the above structure, the fixed frame 111 and the support roller 112 are set, and the aluminum foil can be pre-tightened during hot stamping, so that the tension between the aluminum foils becomes larger, so as to reduce the sagging in the middle of the aluminum foil, resulting in wrinkles during hot stamping and affecting the hot stamping effect.

[0028] like Figure 3As shown, the side walls of a pair of first fixed plates 15 are slidably connected to the first slider 2; the side walls of the fixed block 13 are fixedly connected to a pair of spring telescopic rods 21; the ends of the spring telescopic rods 21 are fixedly connected to the side walls of the first slider 2; the side walls of the first slider 2 are connected to the first pressure roller 22 for common rotation; during operation, when the winding roller 16 rewinds the aluminum foil, the first pressure roller 22 will contact the surface of the aluminum foil wound on the winding roller 16, thereby pressing the aluminum foil tightly against the surface of the winding roller 16. When the aluminum foil is wound, the thickness will continue to increase, and at this time, the spring telescopic rod will be pushed to retract. The rod 21 contracts, thereby driving the first slider 2 and the first pressure roller 22 to slide toward the side away from the winding roller 16. At this time, the rebound force generated by the spring telescopic rod 21 will act on the first pressure roller 22, so that the first pressure roller 22 always presses the surface of the aluminum foil. Through the above structure, the spring telescopic rod 21 and the first pressure roller 22 are arranged, which can squeeze the aluminum foil when winding the aluminum foil, so as to improve the tightness of the aluminum foil when winding, and at the same time reduce the curling and overlapping of the aluminum foil when winding, resulting in distortion of the aluminum foil at the printing position, causing uneven hot stamping.

[0029] like Figure 4 As shown, the side walls of the pressing block 14 are hinged with two pairs of support arms 3 through torsion springs; the two pairs of support arms 3 are symmetrically distributed; the side walls of each pair of support arms 3 are rotatably connected to the second pressing roller 31; the second pressing roller 31 is in an eight-shaped structure and expands to both sides of the pressing block 14; when working, when the pressing block 14 moves toward the substrate below, it will drive the support arms 3 and the second pressing roller 31 on both sides to move. Before the pressing block 14 contacts the substrate, the second pressing roller 31 will first contact the substrate below, so that it can press the aluminum foil and the substrate. As it continues to descend, the second pressing roller 31 will be squeezed to move to both sides. At this time, the second pressing roller 31 will roll over the aluminum foil and the substrate during the movement, thereby generating a pulling effect to both sides, which can flatten the aluminum foil and the substrate. When the pressing block 14 is away from the substrate, the second pressing roller 31 and the support arm 3 will be reset under the action of the torsion spring. Through the above structure, the support arm 3 and the second pressing roller 31 can be set to flatten the aluminum foil and the substrate by pulling during hot stamping, so as to reduce the occurrence of wrinkles during hot stamping and cause uneven hot stamping.

[0030] like Figure 2As shown, the locking assembly includes a bidirectional screw 4; the bidirectional screw 4 is rotatably connected to the middle part of a pair of third fixed plates 110; the middle part of the bidirectional screw 4 is threadedly connected to a pair of second sliders 41; the second slider 41 is arranged close to the inner side of the third fixed plate 110; the fixing frame 111 is rotatably connected to the middle part of the bidirectional screw 4; the fixing frame 111 is in contact with the outer side of the third fixed plate 110; a pair of first slide rails 42 are fixed to the inner side of the third fixed plate 110; the first slide rails 42 are correspondingly arranged with the second slider 41; the third fixed plate 110 is made of tough material; when working, the second slider 41 in the middle can be driven to move toward the third fixed plate 110 by rotating the bidirectional screw 4 when locking the fixing frame 111. When the second slider 41 continuously squeezes the third fixing plate 110, the third fixing plate 110 will fit tightly with the surface of the fixing frame 111, thereby fixing the position of the fixing frame 111. When the angle or height of the fixing frame 111 needs to be adjusted, the second slider 41 is driven away from the third fixing plate 110 by rotating the bidirectional screw 4 in the opposite direction. After the adjustment is completed, the bidirectional screw 4 is rotated forward to cause the second slider 41 to lock the fixing frame 111. Through the above structure, the bidirectional screw 4 is provided with the second slider 41 and the first slide rail 42, and the fixing frames 111 on both sides can be synchronously locked and unlocked by rotating the bidirectional screw 4, so as to reduce the traditional method of using separate fixing tools, resulting in a more cumbersome fixation, thereby improving convenience during use.

[0031] like Figure 4 As shown, a pair of second slide rails 5 are fixedly connected to the top of the unloading table 19; a pull plate 51 is slidably connected in the pair of second slide rails 5; during operation, the printing material is placed on the pull plate 51 for hot stamping. After the hot stamping is completed, the pull plate 51 is pulled to move it out from under the pressure block 14, and then a new printing material is placed on the pull plate 51, and then the pull plate 51 is pushed back to its original position, and the hot stamping work is cyclically performed. Through the above structure, the second slide rails 5 and the pull plate 51 are set, which can facilitate the removal and placement of the printing material from under the pressure block 14 during hot stamping. By keeping away from the pressure block 14, the situation of burns and inconvenience in operation caused by the small gap between the pressure block 14 and the printing material can be reduced.

[0032] like Figure 4 As shown, the buffer assembly includes a support plate 6; the support plate 6 is fixedly connected to the bottom of the discharge table 19; a plurality of damping spring shock absorbers 61 are fixedly connected to the bottom of the support plate 6; the damping spring shock absorber 61 is fixedly connected to the top of the base 1; during operation, when the pressure block 14 applies pressure to the substrate below, vibration will be generated due to the impact, and at this time the damping spring shock absorber 61 will perform buffering and vibration reduction through its own contraction and rebound. Through the above structure, the support plate 6 and the damping spring shock absorber 61 can be provided to reduce vibration during hot stamping, so as to reduce the shaking of the substrate and the aluminum foil caused by vibration, thereby causing uneven hot stamping.

[0033] like Figure 5 As shown, the fixing assembly includes a pair of slots 7; the slots 7 are opened in the middle of the second fixing plate 17; a pair of snap rings 71 are fixed to the side walls of the second fixing plate 17; the snap rings 71 are arranged corresponding to the slots 7; a bolt 72 is installed in the middle of the snap ring 71; when working, when fixing the discharge roller 18, the snap ring 71 is opened, and then the two ends of the discharge roller 18 are placed in the slots 7, and then the snap ring 71 is rotated to close and then connected by the bolt 72, at this time the discharge roller 18 can be fixed. Through the above structure, the slots 7, the snap rings 71 and the bolts 72 are set, which can facilitate the fixation of the discharge roller 18, so as to reduce the use of more fixing tools such as chucks in the traditional way, resulting in a more cumbersome disassembly and assembly process.

[0034] like Figure 4 As shown, the second pressing roller 31 is made of rubber; through the above structure, setting the second pressing roller 31 to be made of rubber can increase the friction between the second pressing roller 31 and the aluminum foil and the printing material, so as to reduce the slipping of the second pressing roller 31 and improve the flattening effect of the aluminum foil and the printing material.

[0035] Working principle: When hot stamping, install the aluminum foil roll on the unloading roller 18, and then fix the unloading roller 18 on the second fixed plate 17, then pull the aluminum foil roll so that the middle part passes around the support rollers 112 on both sides and passes under the fixed block 13, and then wind the end part on the winding roller 16. At this time, the support roller 112 will stretch the aluminum foil from the inside of the aluminum foil, thereby forming a tightening force, and then place the printing material on the unloading table 19, and then start the cylinder 12 to stretch and drive the fixed block 13 to move toward the printing material below, and then hot stamp the aluminum foil on the printing material, and then start the winding roller 16 to wind the aluminum foil. The unused aluminum foil can be pulled above the unloading table 19, and then subsequent hot stamping can be carried out. When the tension of the aluminum foil needs to be adjusted, it can be adjusted by changing By changing the expansion angle of the support roller 112 or moving the support roller 112 relative to the substrate on the locking assembly, when the winding roller 16 winds up the aluminum foil, the first pressure roller 22 will contact the surface of the aluminum foil wound on the winding roller 16, thereby pressing the aluminum foil tightly against the surface of the winding roller 16. When the aluminum foil is wound, the thickness will continue to increase, and at this time, the spring telescopic rod 21 will be pushed to contract, thereby driving the first slider 2 and the first pressure roller 22 to slide away from the winding roller 16. At this time, the rebound force generated by the spring telescopic rod 21 will act on the first pressure roller 22, so that the first pressure roller 22 always presses the surface of the aluminum foil. When the pressing block 14 moves toward the substrate below, it will drive the support arms 3 and the second pressure roller 31 on both sides to move. When the pressing block 14 contacts the substrate Before the pressing block 14 is lifted up, the second pressing roller 31 will first contact the printing material below, thereby pressing the aluminum foil and the printing material. When the pressing block 14 continues to descend, it will squeeze the second pressing roller 31 to move to both sides. At this time, the second pressing roller 31 will roll over the aluminum foil and the printing material during the movement, thereby generating a pulling effect to both sides, which can flatten the aluminum foil and the printing material. When the pressing block 14 is away from the printing material, the second pressing roller 31 and the support arm 3 will be reset under the action of the torsion spring. When locking the fixed frame 111, the second slider 41 in the middle can be driven to move toward the third fixed plate 110 by rotating the bidirectional screw 4. When the second slider 41 continuously squeezes the third fixed plate 110, the third fixed plate 110 will fit tightly with the surface of the fixed frame 111, thereby fixing the fixed frame 111 The position is fixed. When the angle or height of the fixed frame 111 needs to be adjusted, the second slider 41 is driven away from the third fixed plate 110 by rotating the bidirectional screw 4 in the reverse direction. After the adjustment is completed, the bidirectional screw 4 is rotated forward to make the second slider 41 lock the fixed frame 111, and the substrate is placed on the pull plate 51 for hot stamping. After the hot stamping is completed, the pull plate 51 is pulled to move it out from under the pressure block 14, and then a new substrate is placed on the pull plate 51, and then the pull plate 51 is pushed back to its original position, and the hot stamping operation is repeated. When the pressure block 14 applies pressure to the substrate below, vibration will be generated due to the impact. At this time, the damping spring shock absorber 61 will perform buffering and vibration reduction through its own contraction and rebound. When fixing the discharge roller 18, the clamping ring 71 is opened.Then place both ends of the discharge roller 18 in the clamping groove 7, and then rotate the clamping ring 71 to close it and then connect the clamping ring 71 with the bolt 72. At this time, the discharge roller 18 can be fixed.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A pre-tensioning device for a hot stamping machine, comprising a base (1); characterized in that: The top of the base (1) is fixedly connected to a fixing frame (11); the top of the fixing frame (11) is fixedly connected to a cylinder (12); the bottom of the cylinder (12) is fixedly connected to a fixing block (13); the bottom of the fixing block (13) is fixedly connected to a pressure block (14); the side wall of the fixing block (13) is fixedly connected to a pair of first fixing plates (15); the inner side wall of the first fixing plate (15) is installed with a winding roller (16); the side wall of the fixing block (13) away from the first fixing plate (15) is fixedly connected to a pair of second fixing plates (17) ; A fixing assembly is provided in the middle of the second fixing plate (17); a discharge roller (18) is installed in the fixing assembly; a buffer assembly is provided on the top of the base (1); a discharge platform (19) is fixedly connected to the buffer assembly; two pairs of third fixing plates (110) are fixedly connected to the side walls of the fixing block (13); a locking assembly is provided in the middle of the third fixing plate (110); a pair of fixing frames (111) are installed on the locking assembly; a pair of side walls of the fixing frames (111) are connected to support rollers (112) in a manner of rotation therewith.

2. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: A pair of side walls of the first fixed plates (15) are both slidably connected to a first slider (2); a pair of spring telescopic rods (21) are fixedly connected to the side walls of the fixed block (13); ends of the spring telescopic rods (21) are fixedly connected to the side walls of the first slider (2); and the side walls of the first slider (2) are rotatably connected to a first pressure roller (22).

3. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: The side walls of the pressing block (14) are hinged with two pairs of support arms (3) via torsion springs; the two pairs of support arms (3) are symmetrically distributed; the side walls of each pair of support arms (3) are rotatably connected to a second pressing roller (31); the second pressing roller (31) is in an eight-shaped structure and expands toward both sides of the pressing block (14).

4. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: The locking assembly includes a bidirectional screw (4); the bidirectional screw (4) is rotatably connected to the middle of a pair of third fixed plates (110); the middle of the bidirectional screw (4) is threadedly connected to a pair of second sliders (41); the second sliders (41) are arranged close to the inner side of the third fixed plate (110); the fixed frame (111) is rotatably connected to the middle of the bidirectional screw (4); the fixed frame (111) is in contact with the outer side of the third fixed plate (110); a pair of first slide rails (42) are fixed to the inner side of the third fixed plate (110); the first slide rails (42) and the second sliders (41) are arranged correspondingly; the third fixed plate (110) is made of a tough material.

5. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: A pair of second slide rails (5) are fixedly connected to the top of the unloading platform (19); a pull plate (51) is slidably connected in the pair of second slide rails (5).

6. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: The buffer assembly includes a support plate (6); the support plate (6) is fixed to the bottom of the discharge platform (19); a plurality of damping spring shock absorbers (61) are fixed to the bottom of the support plate (6); the damping spring shock absorbers (61) are fixed to the top of the base (1).

7. The pre-tensioning device of a hot stamping machine according to claim 1, characterized in that: The fixing assembly comprises a pair of clamping grooves (7); the clamping grooves (7) are provided in the middle of the second fixing plate (17); a pair of clamping rings (71) are fixedly connected to the side walls of the second fixing plate (17); the clamping rings (71) are arranged corresponding to the clamping grooves (7); and a bolt (72) is installed in the middle of the clamping rings (71).

8. The pre-tensioning device of a hot stamping machine according to claim 3, characterized in that: The second pressing roller (31) is made of rubber.

Images