A needle bar holder for a hot stamping machine head

Abstract

A needle bar holder of a hot stamping machine head according to the present invention is provided with a locking mechanism, which includes a driven wheel locking block, a driven wheel locking torsion spring, a mounting shaft and a second bearing. The mounting shaft is fixed at the bottom of the needle bar holder body. The driven wheel locking block is sleeved on the mounting shaft. The driven wheel locking block is provided with a locking end and a transmission end. The driven wheel locking torsion spring is sleeved on the mounting shaft and one end is connected to the driven wheel locking block, and the other end is connected to the needle bar holder body. A driven wheel locking block and a driven wheel locking torsion spring are provided for each driven wheel. In the present invention, the second bearing presses the driven road locking block to rotate it around the mounting shaft, so that the transmission end of the driven wheel locking block is lifted to keep a distance from the driven wheel, releasing the locking of the driven wheel and preventing it from interfering with the film feeding. Through the action of the driven wheel locking torsion springs of other film belts, the locking ends of the driven wheel locking blocks are respectively pressed against the driven wheels to lock them, avoiding the running of other film belts. Compared with the prior art, the structure is simpler and more reliable.

Description

Technical Field

[0001] The invention discloses a needle rod frame for a sheet ironing machine head, and relates to the field of sheet ironing machines. Background Art

[0002] In recent years, the embroidery market has been expanding, and the embroidery methods have been increasing. The hot stamping machine is one of the more popular special embroidery. The hot stamping machine is used to punch the film tape into patterns of different shapes and colors through the needle bar assembly and put it on the transfer paper to form the required pattern. When hot stamping is required, the heating plate is heated, and a certain pressure, specific temperature and time are used to adhere the layer and thermosetting glue on the transfer paper to the substrate or penetrate into the substrate.

[0003] In the prior art of the film ironing machine, the film belt is subjected to a pulling force by a driving mechanism, and the film belt is discharged and output by a film belt reel. When the film belt moves, the rest of the film belt needs to remain stationary.

[0004] To this end, the known patent with application number CN202020268169.6 discloses a solution in which the force of the self-buckle reset spring pushes the self-buckle push rod clamping block, and the trapezoidal head at the end of the self-buckle push rod pops out and is limited in the tooth groove of the film feeding driven gear. In this way, the non-working film belt is kept stationary. However, in this solution, when changing colors, the self-buckle bearing fixed on the self-buckle bearing seat needs to contact the self-buckle push rod clamping block on the self-buckle fixing block fixed on the hot plate head assembly. During the color change process, the self-buckle bearing continuously squeezes the self-buckle push rod clamping block, the self-buckle reset spring is continuously compressed, and the self-buckle push rod gradually withdraws from the tooth groove of the film feeding driven gear. While the self-buckle push rod retreats, the film feeding active gear and the film feeding driven gear gradually complete the meshing. After the self-buckle push rod is completely withdrawn, the machine starts to operate.

[0005] Therefore, it has the disadvantages of being too complicated, low fault tolerance, easy damage to the machine, and difficult installation of the mechanism. Summary of the invention

[0006] Aiming at the problems existing in the prior art, the present invention proposes a new type of ironing machine head needle bar frame, which has the advantages of simple structure and high reliability.

[0007] The present invention discloses a sheet ironing machine head needle bar frame, comprising a needle bar frame body and a film belt driving assembly, wherein the film belt driving assembly is movably arranged behind the needle bar frame to realize the color changing function, and a plurality of sheet feeding roller groups are arranged at the rear of the bottom of the needle bar frame body, and the sheet feeding roller groups include a driven wheel and a bearing;

[0008] A locking mechanism is provided, which includes a driven wheel locking block, a driven wheel locking torsion spring, a mounting shaft and a second bearing. The mounting shaft is fixed to the bottom of the needle bar frame body, the driven wheel locking block is sleeved on the mounting shaft, and the driven wheel locking block is provided with a locking end and a transmission end.

[0009] The driven wheel locking torsion spring is sleeved on the installation shaft, with one end connected to the driven wheel locking block and the other end connected to the needle bar holder body. For each driven wheel, there is a driven wheel locking block and a driven wheel locking torsion spring. Under the action of each driven wheel locking torsion spring, the locking ends of the respective driven wheel locking blocks are respectively pressed against a corresponding driven wheel to lock the driven wheel.

[0010] There is one second bearing, which is arranged on the film belt driving assembly. During the movement of the film belt driving assembly, the second bearing can move between the driving ends of the respective driven wheel locking blocks. When the second bearing stops at a certain driving end, it can press to make it rotate around the installation shaft, causing the driving end of the driven wheel locking block to tilt up and maintain a distance from the driven wheel, thereby releasing the locking of the driven wheel.

[0011] Furthermore, the film belt driving assembly is provided with a driving wheel for driving the driven wheel to rotate, and the driving wheel and the second bearing are in a vertical plane.

[0012] Furthermore, the film belt driving assembly includes a fixed seat, a swing seat, a first driving motor, and a second driving motor. The swing seat is pivotally connected to one side of the fixed seat by a first rivet. The first driving motor is installed on the side of the fixed seat opposite to the swing seat. A second rivet is fixed on the fixed seat, and the second rivet penetrates through the swing seat. The swing seat is provided with a guiding hole for cooperating with the second rivet. An eccentric sleeve is installed on the output shaft of the first driving motor, and a driving rod is installed on the outer circumference of the eccentric sleeve.

[0013] The second driving motor and the driving wheel are installed at one end of the swing seat opposite to the driving rod, and the driving wheel is connected to the output shaft of the second driving motor.

[0014] When the film belt driving assembly moves to the rear of the corresponding film belt, the first driving motor drives the eccentric sleeve to rotate, thereby causing the driving rod to rotate in one direction. The driving rod abuts against one end of the swing seat to make the swing seat rotate around the first rivet, and then drives the driving wheel at the other end of the swing seat to rotate around the first rivet, so that the driving wheel contacts and connects with the driven wheel, thereby causing the driven wheel to rotate. Relying on the friction of the driven wheel, the film belt moves.

[0015] Furthermore, the film belt driving assembly is provided with a swing seat return torsion spring and a positioning screw. The swing seat return torsion spring is sleeved on the first rivet, and the positioning screw is fixed on the swing seat. One end of the swing seat return torsion spring is fixed to the positioning screw, and the other end is fixed to the edge of the swing seat.

[0016] Furthermore, it includes a film disc bracket, and the film disc bracket is provided with a plurality of installation grooves, and two rollers are provided at the bottom of each installation groove.

[0017] Further, the film reel support is provided with a plurality of triangular plates which are arranged at intervals. An installation groove is formed between the triangular plates. A shaft is respectively provided at two corners at the bottom of each triangular plate to penetrate and connect all the triangular plates. The rollers in the installation groove are sleeved on the shafts.

[0018] Further, a film break detection component is provided. The film break detection component includes a tensioning shaft, a plurality of tensioning adjustment brackets arranged on the tensioning shaft, a tensioning torsion spring positioning shaft, and a proximity switch.

[0019] There are several tensioning adjustment brackets which are sleeved on the tensioning shaft. The tensioning torsion spring positioning shaft is arranged adjacent to the tensioning shaft. The tensioning adjustment bracket is provided with a guiding end and a detection end. A tensioning torsion spring is provided on the tensioning shaft corresponding to each tensioning adjustment bracket. One end of the tensioning torsion spring is connected to the detection end, and the other end is connected to the tensioning torsion spring positioning shaft. The proximity switch is installed on the film belt driving component and can move between the detection ends of each tensioning adjustment bracket following the film belt driving component.

[0020] Further, the driving wheel and the proximity switch are in a vertical plane.

[0021] Further, an LED fluorescent lamp is provided at the top of the needle bar holder body.

[0022] Beneficial effects:

[0023] The present invention uses a locking structure. By pressing the driven path locking block with the second bearing to make it rotate around the installation shaft, the driving end of the driven wheel locking block is lifted to keep a distance from the driven wheel, releasing the locking of the driven wheel so that it will not interfere with the film feeding. For other film belts, through the action of each driven wheel locking torsion spring, the locking ends of the driven wheel locking blocks are respectively pressed against the driven wheels to lock them, preventing other film belts from running. Compared with the prior art, the structure is simpler and more reliable.

[0024] It has a film break detection function. When the film belt is used up or disconnected, its detection end will approach the proximity switch under the action of the tensioning torsion spring to realize an alarm reminder.

[0025] It has a film reel support that is easy to replace the film reel. When the film belt on the film reel is used up and the old film reel is removed, the new film reel can be directly placed into the installation groove to complete the replacement.

[0026] The lighting function is added to facilitate the installation of the film belt. Description of the drawings

[0027] Figure 1 is the side view of the present invention;

[0028] Figure 2 and Figure 3 are the perspective views of the present invention from different perspectives;

[0029] Figure 4 This is the structural decomposition diagram of the film reel bracket of the present invention;

[0030] Figure 5 This is the schematic side view of the mating state of the film belt drive assembly and the film feeding roller set of the present invention;

[0031] Figure 6 This is the schematic perspective view of the mating state of the film belt drive assembly and the film feeding roller set of the present invention;

[0032] Figure 7 This is the structural explosion diagram of the film belt drive assembly of the present invention;

[0033] Figure 8 This is the schematic perspective view of the mechanism for detecting broken pieces of the present invention;

[0034] Figure 9 This is the schematic side view of the mechanism for detecting broken pieces of the present invention;

[0035] Figure 10 This is the structural schematic diagram of the needle bar holder body;

[0036] Explanation of reference numerals:

[0037] Film belt A;

[0038] Needle bar holder body 1;

[0039] Film belt drive assembly 2, drive wheel 21, fixed seat 22, swing seat 23, guide hole 23a, first drive motor 24, second drive motor 25, first rivet 26, second rivet 27, eccentric sleeve 28, drive rod 29, swing seat return torsion spring 210, positioning screw 211, second proximity switch 212;

[0040] Driven wheel 31, bearing 32, driven wheel shaft 33, bearing mounting shaft 34;

[0041] Driven wheel locking block 41, locking end 41a, transmission end 41b, driven wheel locking torsion spring 42, mounting shaft 43, second bearing 44;

[0042] Film reel bracket 5, mounting groove 5a, roller 51, triangular plate 52, shaft 53, film reel 54;

[0043] Tensioning shaft 61, tensioning adjustment bracket 62, guiding end 62a, detecting end 62b, tensioning torsion spring 63, tensioning torsion spring positioning shaft 64, proximity switch 65;

[0044] LED fluorescent lamp 7;

[0045] Hot stamping die assembly 8. Detailed implementation manners

[0046] The present invention will be further described below in conjunction with the accompanying drawings of the specification and specific embodiments. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention described below generally only represent some of the embodiments of the present invention, rather than all of the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0047] As Figure 1-4 shown, a needle bar holder of a hot stamping machine head includes a film reel support 5. The film reel support 5 is provided with a number of triangular plates 52, which are arranged at intervals. At the two bottom corners of each triangular plate 52, there is a shaft 53 passing through all the triangular plates 52. A number of rollers 51 are sleeved on both shafts 53, and the rollers 51 are located between the triangular plates 52. The rollers 51 can keep a certain interval between the triangular plates 52. Due to the interval between the triangular plates 52, an installation groove 5a is formed. The rollers 51 on the two shafts 53 are at the bottom of the installation groove 5a. A film reel 54 wound and storing a film tape A of one color can be placed in each installation groove 5a. The film reel 54 is placed in the installation groove 5a and is carried by the rollers 51. When the film tape A is pulled out, the film reel 54 can rotate freely on the two rollers 51. This film reel support 5 has the advantage of easy replacement of the film reel 54. When the film tape A on the film reel 54 is used up, after removing the film reel 54, a new film reel 54 can be directly placed in the installation groove 5a.

[0048] As Figure 1 shown, the needle bar holder of the hot stamping machine head includes a needle bar holder body 1. There is a hot stamping die assembly 8 at the bottom of the needle bar holder body 1. The film reel support 5 is located above the needle bar holder body 1. The needle bar holder body 1 guides the film tape A. The film tape A is pulled out one by one from the film reel 53, passes through the guidance of the needle bar holder body 1, enters the hot stamping die assembly 8, and then enters the subsequent mechanism. The present application does not limit the structure of the hot stamping die assembly 8 at the bottom of the needle bar holder body 1. The needle bar holder body 1 and the hot stamping die assembly 8 can adopt any structure of the needle bar holder body 1 and the hot stamping die assembly 8 in the prior art.

[0049] As Figures 1-3 , Figures 4-6As shown in the figure, the needle bar holder of the ironing machine head includes a film belt driving assembly 2, which is arranged on the back of the needle bar holder body 1. A driving assembly for driving the film belt driving assembly 2 to move linearly in the horizontal direction of the needle bar holder body 1 is provided on the back of the needle bar holder body 1. During color change, the driving assembly moves the film belt driving assembly 2 to complete the color change. When it moves behind a film belt A, a force can be applied to it to move the film belt A; and a broken piece detection assembly is provided on the film belt driving assembly 2. When the film belt driving assembly 2 moves behind a film belt A, if the film belt A is in a state of being used up or broken, the broken piece detection assembly can sense it, so that the machine can stop in time to avoid the machine running idly and causing damage to the machine.

[0050] The film belt driving assembly 2 includes a fixed seat 22, a swing seat 23, a first driving motor 24, a second driving motor 25, and a driving wheel 21. The swing seat 23 is pivotally connected to one side of the fixed seat 22 by a first rivet 26. The first driving motor 24 is installed on the side of the fixed seat 22 opposite to the swing seat 23. A second rivet 27 is fixed on the fixed seat 22, and the second rivet 27 penetrates through the swing seat 23. A guiding hole 23a cooperating with the second rivet 27 is provided on the swing seat 23. An eccentric sleeve 28 is installed on the output shaft of the first driving motor 24, and a driving rod 29 is installed on the outer periphery of the eccentric sleeve 28. The first driving motor 24 drives the eccentric sleeve 28 to rotate, and then the driving rod 29 rotates in one direction. The driving rod 29 abuts against one end of the swing seat 23 to make the swing seat 23 rotate around the first rivet 26. The second rivet 27 and the guiding hole 23a can make the rotation of the swing seat 23 more stable;

[0051] The second driving motor 25 and the driving wheel 21 are installed at one end of the swing seat 23 opposite to the driving rod 29, and the driving wheel 21 is connected to the output shaft of the second driving motor 25. The rotation of the swing seat 23 can drive the driving wheel 21 to rotate around the first rivet 26;

[0052] Behind the ironing die assembly 8 at the bottom of the needle bar holder body 1, a driven wheel shaft 33 and a bearing mounting shaft 34 are provided. A corresponding number of driven wheels 31 are arranged on the driven wheel shaft 33 according to the number of film belts A, and a corresponding number of bearings 32 are arranged on the bearing mounting shaft 34 corresponding to the number of film belts A. The driven wheels 31 and the bearings 32 are arranged in one-to-one correspondence to form a number of film feeding roller groups, and each film belt A is clamped by a film feeding roller group;

[0053] When the film belt drive assembly 2 moves behind a certain film belt A, the eccentric sleeve 28 is driven by the first drive motor 24 to rotate, thereby causing the drive rod 29 to rotate in one direction. The drive rod 29 abuts against one end of the swing seat 23, causing the swing seat 23 to rotate around the first rivet 26. Further, the drive wheel 21 at the other end of the swing seat 23 also rotates around the first rivet 26, bringing the drive wheel 21 into contact connection with the driven wheel 31. Then, the driven wheel 31 rotates, and relying on the friction of the driven wheel 31, the film belt A moves.

[0054] In one embodiment, the first drive motor 24 of the film belt drive assembly 2 can reverse, so that the drive wheel 21 disengages from the driven wheel 31. During the color change process, that is, when the film belt A drive group moves linearly horizontally along the needle bar holder body 1, the drive wheel 21 does not interfere with the driven wheel 31.

[0055] In another embodiment, the film belt drive assembly 2 is provided with a swing seat return torsion spring 210 and a positioning screw 211. The swing seat return torsion spring 210 is sleeved on the first rivet 26, and the positioning screw 211 is fixed on the swing seat 23. One end of the swing seat return torsion spring 210 is fixed to the positioning screw 211, and the other end is fixed to the edge of the swing seat 23. The setting of the swing seat return torsion spring 210 can automatically reset the driven wheel 31. When the film belt drive assembly 2 moves, the first drive motor 24 is powered off, and the swing seat return torsion spring 210 drives the swing seat 23 to reset, causing the drive wheel 21 to disengage from the driven wheel 31. During the process of the film belt drive assembly 2 moving linearly horizontally along the needle bar holder body 1, the drive wheel 21 does not interfere with the driven wheel 31. This implementation method is more stable and reliable compared to the forward and reverse control of the first drive motor 24.

[0056] In this embodiment, a color change origin sensing function is provided. It relies on the second proximity switch 212 provided on the fixed seat 22 to sense the origin position of the first drive motor 24, avoiding the collision between the drive wheel 21 and the driven wheel 31 during the movement of the film belt drive assembly 2 when changing colors due to the first drive motor 24 not being at the origin position.

[0057] As an important improvement point of the present invention, in order to keep the remaining film belts A stationary when one film belt A moves, a locking mechanism composed of a driven wheel locking block 41, a driven wheel locking torsion spring 42, a mounting shaft 43, and a second bearing 44 is designed;

[0058] Refer to Figure 4 、 Figure 5 As shown, the locking mechanism includes a driven wheel locking block 41, a driven wheel locking torsion spring 42, a mounting shaft 43, and a second bearing 44. The mounting shaft 43 is fixed to the bottom of the needle bar holder body 1. The driven wheel locking block 41 is sleeved on the mounting shaft 43. The driven wheel locking block 41 is provided with a locking end 41a and a transmission end 41b.

[0059] The driven wheel locking torsion spring 42 is sleeved on the mounting shaft 43, with one end connected to the driven wheel locking block 41 and the other end connected to the needle bar holder body 1. For each driven wheel 31, there is a driven wheel locking block 41 and a driven wheel locking torsion spring 42. Under the action of each driven wheel locking torsion spring 42, the locking ends 41a of the respective driven wheel locking blocks 41 are respectively pressed against a corresponding driven wheel 31 to lock the driven wheel 31.

[0060] There is one second bearing 44, which is arranged on the film belt driving assembly 2. During the movement of the film belt driving assembly 2, the second bearing 44 can move between the driving ends 41b of the respective driven wheel locking blocks 41. When the second bearing 44 stops at a certain driving end 41b, it can press on it to rotate around the mounting shaft 43, causing the driving end 41b of the driven wheel locking block 41 to tilt up and maintain a distance from the driven wheel 31, thereby releasing the locking of the driven wheel 31.

[0061] The position of the driving wheel 21 of the film belt driving assembly 2 and the position of the second bearing 44 are in a vertical plane. When the film belt driving assembly 2 moves behind a certain film belt A during color change, the second bearing 44 will unlock its corresponding driven wheel 31 to prevent the driven wheel locking block 41 from interfering with the rotation of the driven wheel 31. For the remaining driven wheel locking blocks 41, under the action of the driven wheel locking torsion spring 42, the locking ends 41a are pressed against the driven wheels 31 to achieve the locking function and prevent other film belts A from running. Compared with the existing technology solutions, it is simpler and more reliable.

[0062] Refer to Figures 1-3 , Figure 8 , Figure 9As shown in the figure, in this embodiment, the fragment detection component includes a tensioning shaft 61, a plurality of tensioning adjustment brackets 62 arranged on the tensioning shaft 61, a tensioning torsion spring positioning shaft 64, and a proximity switch 65. The number of the tensioning adjustment brackets 62 is set corresponding to the number of the film tapes A. The tensioning adjustment brackets 62 are sleeved on the tensioning shaft 61. The tensioning torsion spring positioning shaft 64 is arranged adjacent to the tensioning shaft 61. The tensioning adjustment brackets 62 are provided with a guiding end 62a and a detection end 62b. A tensioning torsion spring 63 is arranged on the tensioning shaft 61 corresponding to each tensioning adjustment bracket 62. One end of the tensioning torsion spring 63 is connected to the detection end 62b, and the other end is connected to the tensioning torsion spring positioning shaft 64. The proximity switch 65 is installed on the film tape driving component 2 and can move between the detection ends 62b of the respective tensioning adjustment brackets 62 following the film tape driving component 2. The film tape A bypasses from behind the guiding end 62a and presses the tensioning adjustment bracket 62. The reaction force of the pressing can tension the film tape A, and the pressing force enables the detection end 62b at the other end to maintain a certain distance from the proximity switch 65. Therefore, when the film tape driving component 2 moves behind a certain film tape A, the proximity switch 65 does not alarm. However, when the film tape A is used up or disconnected, the detection end 62b will reset under the action of the tensioning torsion spring 63, making the distance between the detection end 62b and the proximity switch 65 very close to achieve an alarm. The driving wheel 21 and the proximity switch 65 are in a vertical plane, that is, it can be detected whether the film tape A is used up or disconnected before the driving wheel 21 drives the driven wheel 31.

[0063] In this embodiment, an LED fluorescent lamp 7 is provided at the top of the needle bar holder body 1 to facilitate the installation of the film tape A.

[0064] As Figure 10 shown in the figure, in this embodiment, the needle bar holder body 1 adopts an integral structure formed by integral molding. Compared with the prior art, it reduces multiple parts to one, solves the problem of non-concentric machining and installation of multiple parts, reduces material and labor costs, and simplifies the installation.

[0065] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should all fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A needle bar holder for a heat press head, comprising a needle bar holder body (1) and a film belt drive assembly (2). The film belt drive assembly (2) is movably arranged behind the needle bar holder to achieve the color change function. It is characterized in that: A number of film feeding roller sets are provided at the rear of the bottom of the needle bar holder body (1). The film feeding roller sets include driven wheels (31) and bearings (32); A locking mechanism is provided, which includes a driven wheel locking block (41), a driven wheel locking torsion spring (42), a mounting shaft (43) and a second bearing (44). The mounting shaft (43) is fixed to the bottom of the needle bar holder body (1). The driven wheel locking block (41) is sleeved on the mounting shaft (43). The driven wheel locking block (41) is provided with a locking end (41a) and a transmission end (41b); The driven wheel locking torsion spring (42) is sleeved on the mounting shaft (43) and one end is connected to the driven wheel locking block (41), and the other end is connected to the needle bar holder body (1). For each driven wheel (31), one driven wheel locking block (41) and one driven wheel locking torsion spring (42) are provided. Under the action of each driven wheel locking torsion spring (42), the locking ends (41a) of the respective driven wheel locking blocks (41) are respectively pressed against a corresponding driven wheel (31) to lock the driven wheel (31); There is one second bearing (44), which is arranged on the film belt drive assembly (2). During the movement of the film belt drive assembly (2), the second bearing (44) can move between the transmission ends (41b) of the respective driven wheel locking blocks (41). When the second bearing (44) stops at the transmission end of any driven wheel locking block, it can press the driven wheel locking block to rotate around the mounting shaft (43) to make the transmission end of the driven wheel locking block tilt up and keep a distance from the driven wheel (31), thereby releasing the locking of the driven wheel (31); It includes a film reel support (5). The film reel support (5) is provided with a number of mounting grooves (5a), and two rollers (51) are provided at the bottom of each mounting groove (5a); A film break detection assembly is provided. The film break detection assembly includes a tensioning shaft (61), a plurality of tensioning adjustment brackets (62) arranged on the tensioning shaft (61), a tensioning torsion spring positioning shaft (64), and a proximity switch (65); There are a number of tensioning adjustment brackets (62). The tensioning adjustment brackets (62) are sleeved on the tensioning shaft (61). The tensioning torsion spring positioning shaft (64) is arranged adjacent to the tensioning shaft (61). The tensioning adjustment brackets (62) are provided with a guiding end (62a) and a detection end (62b). For each tensioning adjustment bracket (62) on the tensioning shaft (61), a tensioning torsion spring (63) is provided. One end of the tensioning torsion spring (63) is connected to the detection end (62b), and the other end is connected to the tensioning torsion spring positioning shaft (64). The proximity switch (65) is installed on the film belt drive assembly (2) and can move between the detection ends (62b) of the respective tensioning adjustment brackets (62) following the film belt drive assembly (2).

2. The needle bar holder of a hot stamping machine head according to claim 1, characterized in that: The film belt drive assembly (2) is provided with a drive wheel (21) for driving the driven wheel (31) to rotate. The drive wheel (21) and the second bearing (44) are in a vertical plane.

3. The needle bar holder of the ironing machine head according to claim 2, characterized in that: The film belt driving assembly (2) includes a fixed seat (22), a swing seat (23), a first driving motor (24), and a second driving motor (25). A first rivet (26) is provided on the swing seat (23). The swing seat (23) is pivotally connected to one side of the fixed seat (22) through the first rivet (26). The first driving motor (24) is installed on the side of the fixed seat (22) opposite to the swing seat (23). A second rivet (27) is fixed on the fixed seat (22). The second rivet (27) penetrates through the swing seat (23). A guiding hole (23a) cooperating with the second rivet (27) is provided on the swing seat (23). An eccentric sleeve (28) is installed on the output shaft of the first driving motor (24). A driving rod (29) is installed on the outer periphery of the eccentric sleeve (28). The second driving motor (25) and the driving wheel (21) are installed at one end of the swing seat (23) opposite to the driving rod (29), and the driving wheel (21) is connected to the output shaft of the second driving motor (25). When the film belt driving assembly (2) moves to the rear of the corresponding film belt (A), the first driving motor (24) drives the eccentric sleeve (28) to rotate, thereby causing the driving rod (29) to rotate in one direction. The driving rod (29) abuts against one end of the swing seat (23) to make the swing seat (23) rotate around the first rivet (26), thereby driving the driving wheel (21) at the other end of the swing seat (23) to rotate around the first rivet (26), making the driving wheel (21) contact and connect with the driven wheel (31), and then causing the driven wheel (31) to rotate. Relying on the friction force of the driven wheel (31), the film belt (A) is moved.

4. The needle bar holder of a hot stamping machine head according to claim 3, characterized in that: The film belt driving assembly (2) is provided with a swing seat return torsion spring (210) and a positioning screw (211). The swing seat return torsion spring (210) is sleeved on the first rivet (26). The positioning screw (211) is fixed on the swing seat (23). One end of the swing seat return torsion spring (210) is fixed to the positioning screw (211), and the other end is fixed to the edge of the swing seat (23). A second proximity switch (212) for detecting whether the swing seat (23) is reset is provided on the fixed seat (22).

5. A needle bar holder of a hot stamping machine head according to claim 1, characterized in that: The disc holder (5) is provided with a plurality of triangular plates (52). The triangular plates (52) are arranged at intervals, and the installation groove (5a) is formed between the triangular plates (52). A shaft (53) is provided at each of the two bottom corners of the triangular plate (52) to penetrate and connect all the triangular plates (52). The roller (51) in the installation groove (5a) is sleeved on the shaft (53).

6. The needle bar holder of a hot stamping machine head according to claim 2, characterized in that: The driving wheel (21) and the proximity switch (65) are in a vertical plane.

7. The needle bar holder of a hot stamping machine head according to claim 1, characterized in that: An LED fluorescent lamp (7) is provided at the top of the needle bar holder body (1).

8. A needle bar holder of a hot stamping machine head according to claim 1, characterized in that: The needle bar holder body (1) adopts an integral structure.

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