A heat sink bonding and pressing device for automotive lights

Abstract

This utility model discloses a heat sink bonding and pressing device for automotive lights, including a drive mechanism mounted on top of a pressing table via a limiting rod, a pressure plate slidably disposed between the pressing table and the drive mechanism, the pressure plate being connected to the output shaft of the drive mechanism, and an external thread at the bottom of the limiting rod. A protective assembly includes a fixed sleeve, a rod sleeve, and a first return spring, the internal thread of which is threadedly connected to the external thread of the limiting rod. The rod sleeve is damped and fitted within a first cavity of the fixed sleeve, and the first return spring is disposed between the fixed sleeve and the rod sleeve. The rod sleeve cooperates with the pressure plate. In this utility model, the rod sleeve and fixed sleeve form a damping structure, with the fixed sleeve threaded onto the limiting rod and a return spring positioned between them. When the pressure plate presses down, it first compresses the return spring, pushing the rod sleeve to slide within the fixed sleeve, generating resistance. This buffer structure can absorb pressure fluctuations and localized stress, resulting in a more uniform pressure distribution and reducing impact damage to the mold and workpiece.

Description

Technical Field

[0001] This utility model relates to the field of heat sink processing technology for automotive lamps, and in particular to a heat sink bonding and pressing device for automotive lamps. Background Technology

[0002] In existing technologies, while machine pressing and bonding of heat sinks can solve the problem of excessively high thermal resistance due to uneven pressure, high-efficiency pressing equipment (such as hydraulic presses) can generate fluctuations in the hydraulic system during operation. These fluctuations may cause air bubbles or uneven bonding between the heat sink and the shielding cover, similar to the phenomenon when applying a screen protector to a mobile phone. In addition, due to the complex structure of the shielding cover, overload pressure can easily lead to its structural breakage. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] To address the aforementioned problems, this utility model provides the following technical solution: A heat sink bonding and pressing device for automotive lamps includes a drive mechanism mounted on top of a pressing table via a limiting rod, a pressure plate slidably disposed between the pressing table and the drive mechanism, the pressure plate being connected to the output shaft of the drive mechanism, and the bottom of the limiting rod being provided with an external thread. It also includes a protective component, which includes a fixed sleeve, a rod sleeve, and a first return spring. The internal thread of the fixed sleeve is threadedly connected to the external thread of the limiting rod. The rod sleeve is damped and disposed in the first cavity of the fixed sleeve. The first return spring is disposed between the fixed sleeve and the rod sleeve. The rod sleeve cooperates with the pressure plate.

[0005] Preferably, the upper surface of the pressing table is provided with a product mold box.

[0006] Preferably, the pressure plate is provided with a lubricating sleeve, and the limiting rod is sleeved on the inner wall of the lubricating sleeve.

[0007] Preferably, one end of the rod sleeve is provided with a second extension disc, one end of the fixed sleeve is provided with a first extension disc, one end of the first return spring is fixed to the first extension disc, and the other end of the first return spring is fixed to the second extension disc.

[0008] Preferably, the sleeve is provided with a first piston, which is movably engaged with the first cavity.

[0009] Preferably, the first cavity is connected to the second cavity of the liquid storage cylinder through a flared opening. The liquid storage cylinder is fixed on a fixed sleeve. The second cavity is slidably engaged with the second piston, and the second piston is connected to the inside of the liquid storage cylinder through a second return spring.

[0010] Preferably, the narrow opening of the flared mouth is connected to the first cavity, and the wide opening of the flared mouth is connected to the second cavity.

[0011] The beneficial effects of this invention are as follows: the rod sleeve and the fixed sleeve constitute a damping structure, wherein the fixed sleeve is installed on the limiting rod via a threaded connection, and the two are elastically connected by a first return spring. When the pressure plate is pressed down, the system sequentially generates the following buffering effects: the first return spring is compressed; the rod sleeve moves axially along the inner cavity of the fixed sleeve, generating sliding damping. This composite buffering mechanism effectively alleviates pressure fluctuations in the hydraulic system and local stress concentrations caused by uneven workpiece material through the absorption of spring elastic deformation energy and frictional damping dissipation, thereby achieving uniform pressure distribution. At the same time, the deformation energy storage characteristics of the first return spring can significantly attenuate instantaneous impact loads, playing a dual role in protecting the mold and the workpiece. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a perspective view of the entire embodiment.

[0013] Figure 2 This is an example. Figure 1 Partial 3D view.

[0014] Figure 3 This is a perspective view of the protective components in this embodiment.

[0015] Figure 4 This is a cross-sectional view of the protective component in this embodiment.

[0016] Figure 5 This is an example. Figure 4 A partial view.

[0017] In the figure: pressing table 101, product mold box 102, limit rod 103, external thread 103a, pressure plate 104, lubrication sleeve 105, drive mechanism 106; Protective component 200, fixing sleeve 201, first extension disc 201a, first cavity 201b, internal thread 201c, flared mouth 201e, rod sleeve 202, second extension disc 202a, first piston 202b; First reset spring 203, liquid storage cylinder 204, second cavity 204a, second reset spring 204b, second piston 204c. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] Example 1 Reference Figures 1 to 5 This is an embodiment of the present utility model. This embodiment provides a heat sink bonding and pressing device for automotive lamps, including a drive mechanism 106 set on the top of the pressing table 101 by a limiting rod 103, a pressure plate 104 slidably provided between the pressing table 101 and the drive mechanism 106, the pressure plate 104 being connected to the output shaft of the drive mechanism 106, and an external thread 103a provided at the bottom of the limiting rod 103. It also includes a protective component 200, which includes a fixed sleeve 201, a rod sleeve 202, and a first return spring 203. The internal thread 201c of the fixed sleeve 201 is threadedly connected to the external thread 103a of the limiting rod 103. The rod sleeve 202 is damped and sleeved in the first cavity 201b of the fixed sleeve 201. The first return spring 203 is located between the fixed sleeve 201 and the rod sleeve 202. The rod sleeve 202 cooperates with the pressure plate 104.

[0022] Specifically, the drive mechanism 106 may use a hydraulic system or a pneumatic system (cylinder). In common use, a hydraulic system is used to fix the pressing table 101 and the other two components by means of a limit rod 103. A pressure plate 104 is installed on the output shaft of the drive mechanism 106 and is slidably sleeved on the limit rod 103. Four limit rods are evenly installed on the limit rod 103 to ensure that the pressure plate 104 maintains uniform pressure when it is pressed down by the drive mechanism 106. The sleeve 202 and the fixed sleeve 201 form a damping structure, wherein the fixed sleeve 201 is installed on the limiting rod 103 by a threaded connection, and the two are elastically connected by the first return spring 203. When the pressure plate 104 is pressed down, the system generates the following buffering effects in sequence: (1) the first return spring 203 is compressed; (2) the sleeve 202 moves axially along the inner cavity of the fixed sleeve 201 to generate sliding damping. This composite buffering mechanism can effectively alleviate the pressure fluctuation of the hydraulic system and the local stress concentration caused by the unevenness of the workpiece material through the absorption of the elastic deformation energy of the spring and the dissipation of frictional damping, thereby achieving the uniformity of pressure distribution. At the same time, the deformation energy storage characteristics of the first return spring 203 can significantly attenuate the instantaneous impact load, playing a dual role in protecting the mold and the workpiece; Since the fixed sleeve 201 is threaded onto the limiting rod 103, increasing the thread density of the external thread 103a on the limiting rod 103 can change the distance of the pressure plate 104 pressing the rod sleeve 202 by raising or lowering the fixed sleeve 201. Thus, each adjustment of the height of the fixed sleeve 201 on the limiting rod 103 is equivalent to adjusting the elastic coefficient of the first return spring 203 and the intervention stage of the protective component 200. If the shielding structure is fragile, the fixed sleeve 201 is raised to allow the protective component 200 to intervene prematurely, which can reduce the probability of the shielding structure breaking. If the shielding structure is sturdy, the fixed sleeve 201 is lowered, so that the heat sink and the shielding are pressed and adhered better.

[0023] For example, the upper surface of the pressing table 101 is provided with a product mold box 102, which is used to hold a shield and a heat sink so that the pressure of the two is uniform during pressing.

[0024] For example, the pressure plate 104 is provided with a lubricating sleeve 105, and the limiting rod 103 is sleeved on the inner wall of the lubricating sleeve 105. This helps to reduce the frictional resistance of the sliding between the pressure plate 104 and the limiting rod 103 and reduce the vibration caused by the sliding between the pressure plate 104 and the limiting rod 103, thus ensuring the effect of pressing and fitting the heat sink and the shielding cover.

[0025] For example, the first return spring 203 is connected to the fixed sleeve 201 and the rod sleeve 202 through two extension discs. Specifically, one end of the rod sleeve 202 is provided with a second extension disc 202a, one end of the fixed sleeve 201 is provided with a first extension disc 201a, one end of the first return spring 203 is fixed to the first extension disc 201a, and the other end is fixed to the second extension disc 202a.

[0026] For example, the rod sleeve 202 is provided with a first piston 202b, which is movably engaged with the first cavity 201b. The first cavity 201b is connected to the second cavity 204a of the liquid storage cylinder 204 through the flared mouth 201e. The liquid storage cylinder 204 is fixed on the fixed sleeve 201. The second cavity 204a is slidably engaged with the second piston 204c, and the second piston 204c is connected to the inside of the liquid storage cylinder 204 through the second return spring 204b. For example, the narrow opening of the horn opening 201e is connected to the first cavity 201b, and the wide opening of the horn opening 201e is connected to the second cavity 204a. Specifically, in this embodiment, the medium in the first cavity 201b of the fixed sleeve 201 and the second cavity 204a of the reservoir 204 is hydraulic oil. When the pressure plate 104 is pressed down, the rod sleeve 202 pushes the first piston 202b, causing the hydraulic oil in the first cavity 201b to flow through the flared end 201e to the reservoir 204. Because the flow velocity is fast at the narrow end of the flared end 201e and slow at the wide end, the oil flow produces a controllable damping effect. Combined with the elastic rebound of the second return spring 204b, a "mechanical + hydraulic" dual buffer is formed, which can more smoothly resolve the impact and absorb the pressure fluctuations of the hydraulic system. Moreover, the wide end of the flared end 201e faces the second cavity 204a of the reservoir 204, and its liquid return response is faster. Traditional spring buffers have a fixed elastic coefficient, making them unable to flexibly adapt to the pressing requirements of different materials. The improved hydraulic system, through the gradual design of the 201e bell mouth, allows the oil flow rate to automatically adjust with pressure changes: at low-speed pressing, the oil flow is smooth and the buffering is gentle, making it suitable for brittle materials (such as ceramics and glass). During high-speed pressing, the oil flow accelerates and the damping is enhanced, which can effectively suppress hydraulic shock and protect the mold.

[0027] In addition, the second piston 204c compresses the second return spring 204b under hydraulic pressure, further storing energy, and assists in reset after the compression is completed, so that the system returns to its initial state and improves the equipment's cycle efficiency.

[0028] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0029] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fin-attaching press device for an automobile lamp, characterized by: The drive mechanism (106) is mounted on the top of the pressing table (101) via a limiting rod (103). A pressure plate (104) is slidably provided between the pressing table (101) and the drive mechanism (106). The pressure plate (104) is connected to the output shaft of the drive mechanism (106). The bottom of the limiting rod (103) is provided with an external thread (103a). It also includes a protective component (200), which includes a fixed sleeve (201), a rod sleeve (202), and a first return spring (203). The internal thread (201c) of the fixed sleeve (201) is threadedly connected to the external thread (103a) of the limiting rod (103). The rod sleeve (202) is damped and disposed in the first cavity (201b) of the fixed sleeve (201). The first return spring (203) is disposed between the fixed sleeve (201) and the rod sleeve (202). The rod sleeve (202) cooperates with the pressure plate (104).

2. The fin attaching and pressing device for an automobile lamp according to claim 1, characterized in that: The upper surface of the pressing table (101) is provided with a product mold box (102).

3. The fin attaching and pressing device for an automobile lamp according to claim 1, characterized in that: The pressure plate (104) is provided with a lubricating sleeve (105), and the limiting rod (103) is sleeved on the inner wall of the lubricating sleeve (105).

4. The fin attaching and pressing device for an automobile lamp according to claim 1, characterized in that: One end of the sleeve (202) is provided with a second extension disc (202a), one end of the fixed sleeve (201) is provided with a first extension disc (201a), one end of the first return spring (203) is fixed to the first extension disc (201a), and the other end of the spring is fixed to the second extension disc (202a).

5. The fin attaching and pressing device for an automobile lamp according to claim 4, characterized in that: The sleeve (202) is provided with a first piston (202b), which is movablely engaged with the first cavity (201b).

6. The fin attaching and pressing device for an automobile lamp according to claim 5, characterized in that: The first cavity (201b) is connected to the second cavity (204a) of the liquid storage cylinder (204) through the flared mouth (201e). The liquid storage cylinder (204) is fixed on the fixed sleeve (201). The second cavity (204a) is slidably engaged with the second piston (204c), and the second piston (204c) is connected to the inside of the liquid storage cylinder (204) through the second return spring (204b).

7. The fin attaching and pressing device for an automobile lamp according to claim 6, characterized in that: The narrow opening of the flared mouth (201e) is connected to the first cavity (201b), and the wide opening of the flared mouth (201e) is connected to the second cavity (204a).

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