Mechanical adjusting device for working height of hot stamping roller of license plate hot stamping machine

Abstract

This utility model discloses a mechanical adjustment device for the working height of the hot stamping roller of a license plate hot stamping machine, including a roller body frame (1), on which a roller seat (2) that can move longitudinally is provided via an elastic element; a main adjustment component (3) and a right-angle seat (4) are provided on the front side of the roller body frame (1), and a fine adjustment support plate (5) is provided on the rear side of the roller body frame (1), with a fine adjustment mechanism (6) provided on the fine adjustment support plate (5). A steering component (7) is provided at the transmission end of the fine adjustment mechanism (6), and a transmission self-locking component (8) is provided at the driven end of the steering component (7). The upper end of the driven part of the transmission self-locking component (8) is connected to the end of the main adjustment component (3) via a thread, and its lower end abuts against the right-angle seat (4). This utility model achieves precise adjustment of the distance between the hot stamping roller and the license plate surface through the combined use of the main adjustment component and the fine adjustment mechanism, meeting the requirements for precise hot stamping under diverse working conditions.

Description

Technical Field

[0001] This utility model relates to the field of license plate hot stamping equipment, and in particular to a mechanical adjustment device for the working height of the hot stamping roller of a license plate hot stamping machine. Background Technology

[0002] A dedicated hot stamping machine for license plates heats an upper rubber roller via a heating unit, and uses the rolling action between the upper rubber roller and the lower steel roller to transfer and fix the hot stamping film onto the surface of the license plate, thus achieving hot stamping. In the prior art, Chinese utility model patent CN223187218U discloses a manual hot stamping mechanism, including a worktable, an unwinding roller, a rewinding roller, and a hot stamping assembly. The hot stamping assembly is located between the unwinding roller and the rewinding roller, both of which are rotatably connected to the worktable. It also includes a conveyor belt, with a first conveyor roller and a second conveyor roller rotatably connected to both ends of the worktable. The conveyor belt is tensioned by the first and second conveyor rollers. A support plate is fixedly connected to the worktable, supporting the conveyor belt and located between the conveyor belt and the hot stamping assembly, facilitating the removal of the license plate from the worktable.

[0003] However, in actual production operations, license plates come in different thicknesses and hot stamping films of different materials. To ensure uniform hot stamping pressure and stable film transfer under different working conditions, the distance between the hot stamping roller and the license plate needs to be precisely adjusted. In existing technologies, although the hot stamping roller can be driven by a swing drive rod to switch between the hot stamping position and the maintenance position, meeting the basic needs of equipment operation and maintenance, this swing drive rod structure can only achieve switching between two fixed positions. It cannot continuously and precisely adjust the distance between the hot stamping roller and the license plate, making it difficult for the equipment to adapt to license plates of different thicknesses and hot stamping films of different materials, and failing to meet the precise hot stamping requirements under diverse working conditions. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical adjustment device for the working height of the hot stamping roller in a license plate hot stamping machine. This invention, through the combined use of a main adjustment component and a fine-tuning mechanism, achieves precise adjustment of the distance between the hot stamping roller and the license plate surface, meeting the requirements for accurate hot stamping under diverse working conditions.

[0005] The technical solution of this utility model: a mechanical adjustment device for the working height of the hot stamping roller of a license plate hot stamping machine, including a roller body frame, on which a roller seat that can move longitudinally is provided via an elastic element; a main adjustment component and a right-angle seat are provided on the front side of the roller body frame, and a fine adjustment support plate is provided on the rear side of the roller body frame, with a fine adjustment mechanism on the fine adjustment support plate. The transmission end of the fine adjustment mechanism is provided with a steering component, and the driven end of the steering component is provided with a transmission self-locking component. The upper end of the driven part of the transmission self-locking component is connected to the end of the main adjustment component via a thread, and its lower end abuts against the right-angle seat.

[0006] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the main adjustment component includes a main adjustment bracket set on the front side of the roller body frame. A linkage block is hinged to the upper end of the main adjustment bracket, an adjustment swing rod is hinged to one end of the linkage block, and a linkage rod is connected to the end of the linkage block. An internal threaded sleeve connected to the transmission self-locking component is passed through the lower end of the main adjustment bracket, and the upper end of the internal threaded sleeve is hinged to the linkage rod.

[0007] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the fine-tuning mechanism includes a fine-tuning limit block connected to the fine-tuning support plate, a fine-tuning main rod connected to the fine-tuning limit block via a bearing, and a fixing knob for locking the fine-tuning main rod on the fine-tuning limit block; one end of the fine-tuning main rod is connected to the steering assembly via a universal joint.

[0008] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the steering component includes a right-angle block, and the right-angle block has a drive shaft and a driven shaft arranged at 90 degrees. The drive shaft and the driven shaft are connected by bevel gear transmission. One end of the drive shaft is connected to the fine-tuning main rod via a universal joint, and one end of the driven shaft is connected to the drive end of the transmission self-locking component.

[0009] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the end of the adjustment lever has a ball.

[0010] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the transmission self-locking component includes a square frame, within which a main gear shaft and a secondary gear shaft are staggered at 90 degrees. The main gear shaft is provided with a main drive gear, and the secondary gear shaft is provided with a secondary drive gear. The main drive gear and the secondary drive gear mesh with each other. The upper end of the secondary gear shaft is connected to an internal threaded sleeve via a thread, and the lower end of the secondary gear shaft abuts against a right-angle seat.

[0011] In the aforementioned mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine, the outer side of the fine-tuning limit block and surrounding the fine-tuning main rod have a scale bar.

[0012] Compared with the prior art, the present invention has the following advantages: 1. In this utility model, the main adjustment component is first pulled upwards. The lower end of the main adjustment component is connected to the transmission self-locking component. The driven end of the transmission component abuts against the right-angle seat, realizing coarse adjustment between the hot stamping roller and the license plate. Then, the fine adjustment mechanism is activated to drive the steering component to run. The steering component then drives the transmission self-locking component to run. The upper end of the driven part of the transmission self-locking component is threadedly connected to the end of the main adjustment component. The rotation of the driven part of the transmission self-locking component will cause the end of the main adjustment component to move up and down, realizing fine adjustment between the hot stamping roller and the license plate. Through the two adjustment methods of coarse and fine, the distance between the hot stamping roller and the license plate surface can be precisely adjusted to meet the precise hot stamping requirements under various working conditions.

[0013] 2. The transmission self-locking assembly uses the 90-degree staggered meshing of the main gear shaft and the auxiliary gear shaft, combined with the threaded connection structure between the auxiliary gear shaft and the internal threaded sleeve, to form a two-way self-locking mechanism: on the one hand, the reverse locking characteristic of the gear meshing can prevent the auxiliary gear shaft from rotating due to vibration during the hot stamping operation; on the other hand, the self-locking effect of the threaded connection can stably maintain the relative position of the internal threaded sleeve and the auxiliary gear shaft, ensuring the stability of the height of the hot stamping roller during continuous operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the steering components; Figure 3 This is a schematic diagram of the fine-tuning mechanism; Figure 4 This is a schematic diagram of a transmission self-locking assembly; Figure 5 This is a schematic diagram of the scale bar.

[0015] The markings in the attached diagram are as follows: 1-Roller stand, 2-Roller seat, 3-Main adjustment assembly, 4-Right angle seat, 5-Fine adjustment support plate, 6-Fine adjustment mechanism, 7-Steering assembly, 8-Transmission self-locking assembly, 9-Main adjustment bracket, 10-Linkage block, 11-Adjusting swing arm, 12-Linkage rod, 13-Internal threaded sleeve, 14-Fine adjustment limit block, 15-Fine adjustment main rod, 16-Fixing knob, 17-Right angle block, 18-Drive shaft, 19-Driven shaft, 20-Sphere, 21-Square frame, 22-Main gear shaft, 23-Secondary gear shaft, 24-Main transmission gear, 25-Secondary transmission gear, 26-Scale bar. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example: A mechanical adjustment device for the working height of the hot stamping roller of a license plate hot stamping machine, including a roller support 1, as shown in the attached figure. Figure 1As shown, a roller seat 2, which can move longitudinally, is provided on the roller frame 1 via an elastic element. A hot stamping roller is mounted on the roller seat. When the roller seat moves, the hot stamping roller moves longitudinally accordingly. A spring is provided between the rear side of the roller frame and the roller seat. A main adjustment assembly 3 and a right-angle seat 4 are installed on the front side of the roller frame 1, and a fine adjustment support plate 5 is installed on the rear side of the roller frame 1. A fine adjustment mechanism 6 is installed on the fine adjustment support plate 5, and a steering assembly 7 is installed on the transmission end of the fine adjustment mechanism 6, as shown in the attached figure. Figure 2 As shown, the driven end of the steering assembly 7 is provided with a transmission self-locking assembly 8. The upper end of the driven part of the transmission self-locking assembly 8 is connected to the end of the main adjustment assembly 3 via a thread, and its lower end abuts against the right-angle seat 4. Since the roller support and the roller seat are connected by a spring, the lower end of the driven part of the transmission self-locking assembly always abuts against the right-angle seat.

[0018] The main adjustment component 3 includes a main adjustment bracket 9 located on the front side of the roller stand 1. A linkage block 10 is hinged to the upper end of the main adjustment bracket 9, and an adjusting lever 11 is hinged to one end of the linkage block 10. The end of the adjusting lever 11 has a ball 20. Holding the ball improves the stability of the adjustment when using the adjusting lever. A linkage rod 12 is connected to the end of the linkage block 10. An internal threaded sleeve 13, connected to the transmission self-locking component 8, is passed through the lower end of the main adjustment bracket 9. The upper end of the internal threaded sleeve 13 is hinged to the linkage rod 12. When the main adjustment component is in use, the adjusting lever swings, causing the linkage block to swing. Through the transmission of the linkage rod, the internal threaded sleeve moves up or down, thereby causing the transmission self-locking component connected to the internal threaded sleeve to move up and down, thus adjusting the hot stamping roller. This allows for a wide range of coarse adjustments to the height of the hot stamping roller, adapting to different types of license plates that need to be hot stamped.

[0019] The fine-tuning mechanism 6 includes a fine-tuning limiting block 14 connected to the fine-tuning support plate 5, as shown in the attached figure. Figure 3 As shown, a fine-tuning main rod 15 is connected to the fine-tuning limit block 14 via a bearing. The fine-tuning limit block 14 has a fixing knob 16 for locking the fine-tuning main rod 15. When the fine-tuning main rod is positioned after rotational adjustment, rotating the fixing knob causes its inner end to contact the surface of the fine-tuning main rod. One end of the fine-tuning main rod 15 is connected to the steering assembly 7 via a universal joint. The outer side of the fine-tuning limit block 14, surrounding the fine-tuning main rod 15, has a scale strip 26, as shown in the attached diagram. Figure 5As shown, a scale bar is provided on the fine-tuning limit block to intuitively understand the rotation angle of the fine-tuning main rod. The steering assembly 7 includes a right-angle block 17, within which are a drive shaft 18 and a driven shaft 19 arranged at 90 degrees. The drive shaft 18 and the driven shaft 19 are connected by bevel gear transmission. One end of the drive shaft 18 is connected to the fine-tuning main rod 15 via a universal joint, and one end of the driven shaft 19 is connected to the drive end of the transmission self-locking assembly 8. In the fine-tuning mechanism, rotating the fine-tuning main rod causes the drive shaft to rotate via an outward joint. The drive shaft and the driven shaft are connected by bevel gear meshing transmission. The rotation of the driven shaft transmits the output power to the transmission self-locking assembly, enabling the operation of the transmission self-locking assembly.

[0020] The transmission self-locking assembly 8 includes a square frame 21, as shown in the attached figure. Figure 4 As shown, the square frame 21 contains a main gear shaft 22 and a secondary gear shaft 23 arranged at 90° angles. The main gear shaft 22 is equipped with a main drive gear 24, and the secondary gear shaft 23 is equipped with a secondary drive gear 25. The main drive gear 24 and the secondary drive gear 25 mesh with each other. The upper end of the secondary gear shaft 23 is connected to the internal thread sleeve 13 via a thread, and the lower end of the secondary gear shaft 23 abuts against the right-angle seat 4. In the transmission self-locking assembly, the main shaft receives power from the driven shaft to achieve rotation. The main drive gear on the main gear shaft meshes with the secondary drive gear on the secondary gear shaft, and the meshing between the two has self-locking properties. After the secondary gear shaft rotates, its upper end is connected to the internal thread sleeve, and its lower end abuts against the right-angle seat. The rotation of the secondary gear shaft will produce relative displacement with respect to the fixed internal thread sleeve. The secondary gear shaft pushes the right-angle seat to move, thereby realizing the movement of the roller seat. At the same time, the entire square frame will move accordingly.

[0021] The transmission self-locking assembly uses a 90-degree staggered meshing transmission between the main gear shaft and the auxiliary gear shaft, combined with the threaded connection structure between the auxiliary gear shaft and the internal threaded sleeve, to form a two-way self-locking mechanism: on the one hand, the reverse locking characteristic of the gear meshing can prevent the auxiliary gear shaft from rotating due to vibration during the hot stamping operation; on the other hand, the self-locking effect of the threaded connection can stably maintain the relative position between the internal threaded sleeve and the auxiliary gear shaft, ensuring the stability of the hot stamping roller height during continuous operation.

[0022] The working principle of this utility model is as follows: When it is necessary to adapt to license plates of different thicknesses, the height of the hot stamping roller is coarsely adjusted over a wide range through the main adjustment component 3. The operator holds the adjustment lever 11 and swings it clockwise or counterclockwise. The adjustment lever 11 is hinged to the linkage block 10, and the swinging motion drives the linkage block 10 to rotate around the hinge point at the upper end of the main adjustment bracket 9. The other end of the linkage block 10 is fixedly connected to the linkage rod 12, and the rotational motion is converted into the longitudinal pushing and pulling motion of the linkage rod 12. The lower end of the linkage rod 12 is hinged to the internal threaded sleeve 13, and the pushing and pulling motion drives the internal threaded sleeve 13 to move up and down along the longitudinal channel of the main adjustment bracket 9. The internal threaded sleeve 13 drives the displacement of the secondary gear shaft 23, and the displacement of the secondary gear shaft 23 is indirectly transmitted to the roller seat 2. Combined with the elastic support force of the spring, the roller seat 2 and the hot stamping roller move up and down synchronously, realizing a certain range of coarse adjustment, quickly reducing the initial distance between the hot stamping roller and the license plate surface, and adapting to the basic height requirements of license plates of different thicknesses. For further fine adjustment, the operator... The operator observes the scale strip 26 surrounding the fine-tuning main rod 15 on the outer side of the fine-tuning limit block 14 and rotates the fine-tuning main rod 15; the fine-tuning limit block 14 is fixed to the fine-tuning support plate 5, and one end of the fine-tuning main rod 15 is connected to the drive shaft 18 of the steering assembly 7 through a universal joint. Inside the right-angle block 17 of the steering assembly 7, the drive shaft 18 and the driven shaft 19 are arranged at 90° and meshed through bevel teeth to achieve vertical steering of the power direction, transmitting the rotation of the drive shaft 18 to the driven shaft 19; the driven shaft 19 and the transmission The main gear shaft 22 of the self-locking assembly 8 is connected, driving the main gear shaft 22 to rotate; the main transmission gear 24 on the main gear shaft 22 and the secondary transmission gear 25 on the secondary gear shaft 23 are interleaved at 90°, converting the rotation of the main gear shaft 22 into the slow rotation of the secondary gear shaft 23; since the secondary gear shaft 23 is threadedly connected to the internal threaded sleeve 13, and the lower end of the secondary gear shaft 23 abuts against the right angle seat 4 and cannot move longitudinally, the rotation of the secondary gear shaft 23 will drive the internal threaded sleeve 13 to produce a slight rise and fall along the axial direction of the secondary gear shaft 23.

Claims

1. A mechanical adjustment device for the working height of the hot stamping roller of a license plate hot stamping machine, comprising a roller body frame (1), and a roller seat (2) that can move longitudinally on the roller body frame (1) via an elastic element; characterized in that: The front side of the roller frame (1) is provided with a main adjustment component (3) and a right angle seat (4). The rear side of the roller frame (1) is provided with a fine adjustment support plate (5). The fine adjustment support plate (5) is provided with a fine adjustment mechanism (6). The transmission end of the fine adjustment mechanism (6) is provided with a steering component (7). The driven end of the steering component (7) is provided with a transmission self-locking component (8). The upper end of the driven part of the transmission self-locking component (8) is connected to the end of the main adjustment component (3) by a thread, and its lower end abuts against the right angle seat (4).

2. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 1, characterized in that: The main adjustment component (3) includes a main adjustment bracket (9) set on the front side of the roller frame (1). A linkage block (10) is hinged to the upper end of the main adjustment bracket (9). An adjustment swing rod (11) is hinged to one end of the linkage block (10). A linkage rod (12) is connected to the end of the linkage block (10). An internal threaded sleeve (13) connected to the transmission self-locking component (8) is passed through the lower end of the main adjustment bracket (9). The upper end of the internal threaded sleeve (13) is hinged to the linkage rod (12).

3. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 1, characterized in that: The fine-tuning mechanism (6) includes a fine-tuning limit block (14) connected to the fine-tuning support plate (5). The fine-tuning limit block (14) is connected to the fine-tuning main rod (15) via a bearing. The fine-tuning limit block (14) has a fixing knob (16) for locking the fine-tuning main rod (15). One end of the fine-tuning main rod (15) is connected to the steering assembly (7) via a universal joint.

4. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 3, characterized in that: The steering assembly (7) includes a right-angle block (17), which has a drive shaft (18) and a driven shaft (19) arranged at 90 degrees. The drive shaft (18) and the driven shaft (19) are connected by bevel gear transmission. One end of the drive shaft (18) is connected to the fine-tuning main rod (15) via a universal joint, and one end of the driven shaft (19) is connected to the drive end of the transmission self-locking assembly (8).

5. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 2, characterized in that: The end of the adjusting lever (11) has a ball (20).

6. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 1, characterized in that: The transmission self-locking assembly (8) includes a square frame (21), which has a main gear shaft (22) and a secondary gear shaft (23) arranged at 90 degrees. The main gear shaft (22) is provided with a main transmission gear (24), and the secondary gear shaft (23) is provided with a secondary transmission gear (25). The main transmission gear (24) and the secondary transmission gear (25) mesh with each other. The upper end of the secondary gear shaft (23) is connected to the internal thread sleeve (13) by a thread, and the lower end of the secondary gear shaft (23) abuts against the right angle seat (4).

7. The mechanical adjustment device for the working height of the hot stamping roller of the license plate hot stamping machine according to claim 3, characterized in that: The fine-tuning limit block (14) has a scale bar (26) on its outer side and around the fine-tuning main rod (15).

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