A PU leather wood grain transfer head assembly and a transfer device

Abstract

The utility model relates to box body surface treatment technical field, the utility model discloses a PU leather wood grain transfer head subassembly and transfer printing device, transfer head subassembly includes: connecting seat, the top of connecting seat is equipped with drive hole, and the side of connecting seat is equipped with installation slot, and installation slot communicates with drive hole, baffle, baffle sets up in installation slot, and baffle is equipped with the guide hole that penetrates along installation slot direction, press bar, press bar slides along guide hole, and the both ends of press bar are driven end part and tight compression end part respectively, and driven end part includes the circular table towards baffle, and the top side of driven end part is equipped with driven inclined plane, and the inclination direction of driven inclined plane is configured as when driven inclined plane receives the pressure that goes down along drive hole axis direction, drives press bar to stretch to the outside of connecting seat, and tight compression end part goes out from guide hole to the outside of connecting seat, reset spring, reset spring sets up between baffle and circular table and drives press bar to move towards drive hole.

Description

Technical Field

[0001] This utility model relates to the field of box surface treatment technology, and in particular to a PU leather wood grain transfer head assembly and transfer device. Background Technology

[0002] When performing wood grain transfer on PU leather surfaces, the transfer head assembly is a crucial component for achieving precise transfer of the wood grain pattern. Its structural design directly affects the stability, accuracy, and transfer effect of the transfer pressure. Currently, most PU leather wood grain transfer head assemblies on the market employ a direct pushing or unidirectional force design for the pressure rod drive structure used to apply transfer pressure to the PU leather. This results in poor matching between the pressure transmission direction and the extension / retraction direction of the pressure rod, often leading to low pressure conversion efficiency. Consequently, the movement of the pressure rod towards the PU leather is not smooth enough, easily causing uneven force distribution on the PU leather. This results in insufficient clarity and blurred edges in the transferred wood grain pattern, failing to meet the requirements for high-quality PU leather wood grain transfer. Utility Model Content

[0003] The present invention aims to improve at least one technical problem in the prior art.

[0004] This utility model provides a PU leather wood grain transfer head assembly, including: A connector, wherein the top surface of the connector is provided with a drive hole and the side surface of the connector is provided with a mounting groove, the mounting groove communicating with the drive hole; A baffle is disposed in the mounting groove, and the baffle is provided with a guide hole that extends through the mounting groove. A pressure rod slides along the guide hole. The pressure rod has a driven end and a pressing end at its two ends. The driven end is located inside the drive hole and includes a frustum facing the baffle. The top side of the driven end is provided with a driven inclined surface. The inclination direction of the driven inclined surface is configured such that when the driven inclined surface is subjected to downward pressure along the axis of the drive hole, it drives the pressure rod to extend out of the connecting seat. The pressing end extends out of the guide hole to the outside of the connecting seat. A reset spring is provided between the baffle and the frustum and drives the pressure rod to move toward the drive hole.

[0005] The beneficial effects of this utility model are as follows: In this PU leather wood grain transfer head assembly, the connecting seat provides reasonable space for the installation and movement of the pressure rod through the connection design of the drive hole and the mounting groove; the frustum structure of the driven end of the pressure rod cooperates with the return spring to enable the pressure rod to stably return to its original position after being subjected to force; and the inclined direction of the driven slope can convert the downward pressure along the axis of the drive hole into a force that drives the pressure rod to extend beyond the connecting seat, making the pressing effect of the transfer head when in contact with the PU leather more stable, which helps to improve the clarity and consistency of the wood grain transfer.

[0006] As some sub-solutions of the above technical solution, the combination of the mounting groove, baffle, pressure rod, and return spring constitutes a spring-loaded structure, and there are multiple spring-loaded structures. Having multiple spring-loaded structures allows the pressure application points of the transfer head assembly on the PU leather to be more dispersed, avoiding the problem of excessive or insufficient local pressure caused by concentrated force on a single spring-loaded structure. This results in a more balanced transfer pressure across different areas of the PU leather, further optimizing the transfer effect and improving the uniformity of the wood grain on the surface of the PU leather after transfer.

[0007] As a sub-solution of the above technical solution, the number of the spring-loaded structures is four. The configuration of four spring-loaded structures makes the pressure coverage range more reasonable and the force distribution more balanced, which is suitable for the placement slot of the square box, reduces the situation of poor local adhesion of the transfer film, and improves the overall adhesion tightness.

[0008] As a sub-solution of the above technical solution, the PU leather wood grain transfer head assembly also includes a pressure plate, which is detachably connected to the pressing end of the pressure rod. This detachable connection design between the pressure plate and the pressing end of the pressure rod allows operators to replace pressure plates of different sizes and shapes according to the shape of the groove to be placed, improving the adaptability of the assembly and expanding its application range. It meets the needs of different transfer scenarios without requiring the replacement of the entire transfer head assembly.

[0009] As a sub-solution of the above technical solution, the pressure plate includes a slot, the top surface of which is provided with a screw hole. The screw hole extends through the side away from the slot, and the clamping end is inserted into the slot. A screw is threaded into the screw hole, and the tail of the screw abuts against the clamping end. The pressure plate engages with the clamping end of the pressure rod through the slot and is fixed by the screw in the screw hole. The structure where the tail of the screw abuts against the clamping end makes the disassembly and assembly of the pressure plate simple and quick, while ensuring the firmness of the connection between the pressure plate and the pressure rod. This reduces the relative displacement between the pressure plate and the pressure rod during the transfer process, improves the stability of the transfer process, and indirectly ensures the transfer quality.

[0010] This utility model also provides a transfer device, including a PU leather wood grain transfer head assembly as described in any of the above technical solutions. Because this transfer device includes the aforementioned PU leather wood grain transfer head assembly, it possesses the advantages of stable pressure transmission, good transfer effect, and strong adaptability provided by this assembly. This improves the overall working performance of the transfer device, making it more reliable in PU leather wood grain transfer operations, and helps to improve transfer efficiency and finished product qualification rate. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of a PU leather wood grain transfer head assembly according to the present invention; Figure 2 This is a schematic diagram of the structure of a PU leather wood grain transfer head assembly according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a PU leather wood grain transfer head assembly according to this utility model. Figure 3 .

[0012] In the attached image: 1-Connector; 11-Drive hole; 12-Mounting slot; 2-Baffle; 3-Compression rod; 31-Driven end; 311-Driven inclined surface; 312-Frustum; 32-Firmly pressed end; 4-Return spring; 5-Pressure plate; 52-Screw hole; 6-Drive mechanism. Detailed Implementation

[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0014] The following is combined Figures 1 to 3 The embodiments of this utility model are described below.

[0015] Reference Figures 1 to 3 This embodiment discloses a PU leather wood grain transfer head assembly, such as... Figure 1 As shown, the component includes a connecting base 1, which serves as the mounting base for the entire component. Its structural design directly affects the assembly stability of each component. The top surface of the connecting base 1 has an integrally formed drive hole 11, which receives external driving force. The side surface of the connecting base 1 has a horizontally oriented mounting groove 12. The depth of the mounting groove 12 matches the radial dimension of the connecting base 1, and the mounting groove 12 maintains communication with the drive hole 11. This communication structure provides a channel for power transmission to subsequent components.

[0016] A baffle 2 is fixed in the mounting groove 12 by bolts. The shape of the baffle 2 matches the shape of the groove cavity of the mounting groove 12 to ensure the installation stability of the baffle 2 in the mounting groove 12. In order to make the sliding fit between the baffle 2 and the pressure rod 3 stable, this utility model also provides a guide hole that runs through the mounting groove 12. The guide hole is opened in the middle of the baffle 2, and its diameter accuracy is controlled within ±0.02mm to reduce the gap shaking during the subsequent sliding process of the pressure rod 3.

[0017] A pressure rod 3 is inserted through the guide hole. The pressure rod 3 can slide freely along the axial direction of the guide hole. The two ends of the pressure rod 3 are the driven end 31 and the pressing end 32, respectively. The driven end 31 is located inside the drive hole 11 to ensure that the external driving force can be directly applied to this end. The driven end 31 includes an integrally formed frustum 312, which faces the baffle 2. Its diameter gradually increases from the end closer to the baffle 2 to the end farther away from the baffle 2. The top side of the driven end 31 is machined with a driven inclined surface 311. The angle between the driven inclined surface 311 and the axis of the pressure rod 3 is set to 30°-45°. The inclination direction is specifically configured such that when the driven inclined surface 311 is subjected to downward pressure along the axis of the driving hole 11, the pressure can be decomposed into a horizontal component along the axis of the pressure rod 3. This horizontal component can drive the pressure rod 3 to extend outward from the connecting seat 1. The pressing end 32 of the pressure rod 3 passes through the guide hole to the outside of the connecting seat 1. Its end face is polished and the surface roughness is controlled below Ra0.8 to reduce contact wear with the subsequent pressure plate 5.

[0018] A return spring 4 is provided between the baffle 2 and the frustum 312. The return spring 4 is sleeved on the outside of the pressure rod 3. One end of the return spring 4 abuts against the side of the baffle 2 and the other end abuts against the end face of the frustum 312. The return spring 4 is always in a pre-compressed state, thereby continuously applying a force to the pressure rod 3 to move toward the drive hole 11. When the external pressure is removed, the pressure rod 3 can quickly return to the initial position under the action of the return spring 4.

[0019] Furthermore, in one embodiment of the present invention, the combination of the mounting groove 12, the baffle 2, the pressure rod 3, and the return spring 4 forms a spring-loaded structure. Multiple spring-loaded structures are evenly distributed along the circumference of the connecting seat 1, with equal included angles between adjacent spring-loaded structures, ensuring that the forces exerted by each spring-loaded structure are uniformly superimposed. In this embodiment, four spring-loaded structures are preferably arranged corresponding to the four sides of the connecting seat 1. This arrangement ensures the uniformity of the transfer pressure without making the component structure overly complex.

[0020] To improve the compatibility of the components, this PU leather wood grain transfer head assembly also includes a pressure plate 5. The pressure plate 5 and the clamping end 32 of the pressure rod 3 are detachably connected. Specifically, the pressure plate 5 includes an integrally formed slot. The inner diameter of the slot matches the outer diameter of the clamping end 32 of the pressure rod 3, ensuring that the clamping end 32 can be smoothly inserted into the slot. A screw hole 52 is provided on the top surface of the slot. The side of the screw hole 52 away from the slot extends through the upper surface of the pressure plate 5. When the clamping end 32 is inserted into the slot, a screw is threaded into the screw hole 52. The tail of the screw passes through the screw hole 52 and abuts against the outer wall of the clamping end 32. Tightening the screw can fix the pressure plate 5 and the pressure rod 3. Loosening the screw can quickly remove the pressure plate 5, making it easy to replace the pressure plate 5 of different specifications according to the transfer requirements.

[0021] This embodiment also discloses a transfer device, which includes the PU leather wood grain transfer head assembly of any of the above embodiments. The transfer device also includes a first driving mechanism and a second driving mechanism. Both the first driving mechanism 7 and the second driving mechanism are cylinders. The output end of the first driving mechanism is driven and connected to a moving stage. The second driving mechanism and the connecting seat are both installed on the moving stage 71. The second driving mechanism 6 cooperates with the driving hole 11 of the connecting seat 1. By applying pressure to the driven inclined surface 311 through the driving mechanism, the pressure rod 3 can be controlled to drive the pressure plate 5 to approach the PU leather and apply transfer pressure. The transfer process is stable and reliable, and the wood grain pattern after transfer has high clarity and good consistency.

[0022] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A PU leather wood grain transfer head assembly, characterized in that: include: A connecting seat (1) is provided with a driving hole (11) on its top surface and a mounting groove (12) on its side surface. The mounting groove (12) is connected to the driving hole (11). Baffle (2), the baffle (2) is disposed in the mounting groove (12), and the baffle (2) is provided with a guide hole that runs through the mounting groove (12); A pressure rod (3) slides along the guide hole. The two ends of the pressure rod (3) are a driven end (31) and a pressing end (32). The driven end (31) is located inside the drive hole (11). The driven end (31) includes a frustum (312) facing the baffle (2). The top side of the driven end (31) is provided with a driven inclined surface (311). The inclined direction of the driven inclined surface (311) is configured such that when the driven inclined surface (311) is subjected to a downward pressure along the axis of the drive hole (11), the pressure rod (3) is driven to extend out of the connecting seat (1). The pressing end (32) passes through the guide hole to the outside of the connecting seat (1). A reset spring (4) is disposed between the baffle (2) and the frustum (312) and drives the pressure rod (3) to move toward the drive hole (11).

2. The PU leather wood grain transfer head assembly according to claim 1, characterized in that: The combination of the mounting groove (12), baffle (2), pressure rod (3) and reset spring (4) is a spring-loaded structure, and there are multiple spring-loaded structures.

3. The PU leather wood grain transfer head assembly according to claim 2, characterized in that: The number of elastic compression structures is four.

4. The PU leather wood grain transfer head assembly according to claim 1, characterized in that: The PU leather wood grain transfer head assembly also includes a pressure plate (5), which is detachably connected to the pressing end (32) of the pressure rod (3).

5. The PU leather wood grain transfer head assembly according to claim 4, characterized in that: The pressure plate (5) includes a slot, and the top surface of the slot is provided with a screw hole (52). The screw hole (52) is through the side away from the slot. The clamping end (32) is inserted into the slot. A screw is threaded into the screw hole (52), and the tail of the screw abuts against the clamping end (32).

6. A transfer device, characterized in that: Includes a PU leather wood grain transfer head assembly as described in any one of claims 1-5.

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