Double-sided dispensing clamp for underfill adhesive

Abstract

The utility model relates to the technical field of clamp, concretely to a double -sided point gum clamp of bottom filling glue, this clamp includes bottom plate, top plate and positioning piece, and positioning piece sets up between bottom plate and top plate, and positioning piece sets up two groups together, the inside of bottom plate has seted up first through groove, and the inside of top plate has seted up second through groove, one side of second through groove has seted up first connecting groove and second connecting groove, and the other side of second through groove has seted up third connecting groove, and first connecting groove and third connecting groove are in same vertical horizontal line, and first through groove and second through groove set up two groups respectively, and first through groove and second through groove are in same perpendicular horizontal line, and the both sides of top plate near third connecting groove one end have seted up locating groove, and locating groove sets up two groups together, and locating groove takes the central axis of top plate as reference standard, and is symmetric distribution, the utility model has the advantages of simple structure, reasonable in design, can not need secondary clamping simultaneously, has greatly promoted efficiency and has guaranteed the advantages such as double -sided alignment precision.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a double-sided dispensing clamp with bottom-filled adhesive. Background Technology

[0002] In the field of electronic product manufacturing, especially in processes involving chip underfill, it is usually necessary to apply adhesive to both sides of the printed circuit board assembly. During this process, special fixtures are required to firmly clamp and precisely position the PCBA.

[0003] Existing fixtures have complex structures and unreasonable designs. In actual production, they require dispensing adhesive on the back of the product and then dispensing adhesive on the top on another production line, which increases the number of production steps, resulting in low production efficiency and significantly increased production costs. To address this problem, the inventors designed a double-sided dispensing fixture with bottom-filled adhesive. Utility Model Content

[0004] The purpose of this utility model is to provide a double-sided dispensing fixture for bottom-filled adhesive, which has the advantages of simple structure, reasonable design, and no need for secondary clamping, greatly improving efficiency and ensuring double-sided alignment accuracy, thus solving the problems mentioned in the above technical background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a double-sided dispensing fixture for bottom filling adhesive, the fixture comprising a bottom plate, a top plate and positioning members, the positioning members being disposed between the bottom plate and the top plate, and two sets of positioning members being disposed in total;

[0006] The bottom plate has a first through groove inside, and the top plate has a second through groove inside;

[0007] The second through groove has a first connecting groove and a second connecting groove on one side, and a third connecting groove on the other side. The first connecting groove and the third connecting groove are on the same vertical horizontal line.

[0008] Preferably, the first through groove and the second through groove are provided in two sets, and the first through groove and the second through groove are on the same vertical horizontal line.

[0009] Preferably, the top plate has positioning grooves on both sides near the end of the third connecting groove. There are two sets of positioning grooves, and the positioning grooves are symmetrically distributed with the central axis of the top plate as a reference standard.

[0010] Preferably, the positioning groove is provided with a limiting component, which includes a threaded post and a positioning post, with the positioning post located at the top of the threaded post.

[0011] Preferably, the threaded column includes a connecting pipe and a positioning block, which are integrally formed. The connecting pipe is threaded to the outside of the threaded column, and the positioning block is located inside the positioning groove.

[0012] Preferably, the positioning element is made of silicone pillars, and a set of the positioning elements consists of four silicone pillars. The silicone pillars are fixed to the end face of the base plate and distributed around the first through groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a double-sided dispensing fixture for bottom-filled adhesive. The fixture includes a base plate, a top plate, and positioning components. The base plate has a first through groove, and the top plate has a second through groove. The overall structure is simple and reasonably designed. Through the design of the first and second through grooves, after clamping once, only the fixture needs to be flipped as a whole to perform dispensing operations on the top and back surfaces of the PCBA through different windows in sequence, without the need for secondary clamping. This greatly improves efficiency and ensures double-sided alignment accuracy. Furthermore, the through grooves and connecting grooves on the base plate and top plate with misaligned shapes cooperate to form a multi-directional, multi-point snap-fit ​​limit on the edge of the PCBA board, effectively preventing any movement or slippage of the PCBA during dispensing or flipping.

[0015] 2. This utility model uses silicone pillars as positioning and force application medium, providing flexible clamping force and avoiding component damage or product scratches caused by rigid clamps. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a structural diagram of the base plate of this utility model;

[0019] Figure 4 This is a structural diagram of the limiting component of this utility model.

[0020] The reference numerals and names in the figure are as follows:

[0021] 1. Base plate; 11. First through groove; 2. Top plate; 21. Second through groove; 211. First connecting groove; 212. Second connecting groove; 213. Third connecting groove; 22. Positioning groove; 3. Limiting component; 31. Threaded post; 32. Positioning post; 321. Connecting pipe; 322. Positioning block; 4. Positioning component; 41. Silicone post. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] Please see Figures 1 to 4 The present invention provides an embodiment of a double-sided dispensing fixture for bottom filling adhesive, the fixture including a bottom plate 1, a top plate 2 and a positioning member 4, the positioning member 4 being disposed between the bottom plate 1 and the top plate 2, and two sets of the positioning member 4 being disposed in total;

[0026] The bottom plate 1 has a first through groove 11 inside, and the top plate 2 has a second through groove 21 inside;

[0027] The second through groove 21 has a first connecting groove 211 and a second connecting groove 212 on one side, and a third connecting groove 213 on the other side. The first connecting groove 211 and the third connecting groove 213 are on the same vertical horizontal line.

[0028] The base plate 1 serves as the reference platform for the fixture, supporting the PCBA and positioning system. The top plate 2 and the base plate 1 are precisely fitted together to form a three-dimensional clamping and closed positioning cavity for the PCBA. The first connecting groove 211, the second connecting groove 212, and the third connecting groove 213 are designed with the edge shape of the first through groove 11 of the base plate 1 offset, forming a snap-fit ​​mechanical limit on the edge of the PCBA from multiple directions and points, effectively preventing the PCBA from moving or sliding in any horizontal direction.

[0029] Two sets of first through slots 11 and second through slots 21 are provided respectively, and the first through slots 11 and the second through slots 21 are on the same vertical horizontal line.

[0030] The first through slot 11 provides an operating window and clearance space for the area at the bottom of the PCBA where dispensing is required, ensuring that the dispensing needle can work without obstruction. The second through slot 21 is the main working window for dispensing components at the top of the PCBA.

[0031] Positioning grooves 22 are provided on both sides of the top plate 2 near the third connecting groove 213. There are two sets of positioning grooves 22, and the positioning grooves 22 are symmetrically distributed with the central axis of the top plate 2 as the reference standard.

[0032] The positioning groove 22 is used to accommodate and guide the positioning block 322 of the limiting member 3.

[0033] The positioning groove 22 is provided with a limiting component 3, which includes a threaded post 31 and a positioning post 32, with the positioning post 32 located on top of the threaded post 31.

[0034] The threaded column 31 is the core transmission component, which is vertically fixed to the base plate 1. Its external thread is used to cooperate with the connecting pipe 321 to convert the rotational motion into linear or positioning motion at a specific angle.

[0035] The threaded column 31 includes a connecting pipe 321 and a positioning block 322. The connecting pipe 321 and the positioning block 322 are integrally formed. The connecting pipe 321 is threaded to the outside of the threaded column 31, and the positioning block 322 is located inside the positioning groove 22.

[0036] The connecting pipe 321 has internal threads that engage with the threaded post 31. When it is rotated by the positioning post 32, it moves axially along the threaded post 31. The positioning block 322 is used to lock the top plate 2 firmly onto the bottom plate 1 like a latch.

[0037] The positioning element 4 is composed of silicone pillars 41. A set of positioning elements 4 consists of four silicone pillars 41. The silicone pillars 41 are fixed to the end face of the base plate 1 and are distributed around the first through groove 11.

[0038] The silicone pillar 41 provides flexible and adjustable positioning and clamping force, and can play a preliminary guiding and alignment role when placing the top plate 2.

[0039] Working principle: When the fixture is needed, firstly, guided by the silicone pillar 41, two sets of PCBAs are placed on top of the base plate 1. Then, with the design of the positioning groove 22, the top plate 2 is placed on top of the base plate 1, so that the silicone pillar 41 is clamped between the base plate 1 and the top plate 2. With the design of the first connecting groove 211, the second connecting groove 212 and the third connecting groove 213, the shapes of the first through groove 11 and the second through groove 21 are not the same, so that the PCBA can be firmly clamped between the base plate 1 and the top plate 2. Then, a rotational force is applied to the positioning pillar 32, and the connecting tube 321 rotates outside the threaded pillar 31, so that the positioning block 322 is rotated 90 degrees. After the positioning block 322 is attached to the surface of the top plate 2, with the design of the first through groove 11, the dispensing machine first processes the back of the PCBA. Then, the fixture is flipped, and with the design of the second through groove 21, the dispensing machine processes the top surface of the PCBA.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A double-sided dispensing fixture for bottom-filling adhesive, characterized in that, include: The base plate (1), the top plate (2) and the positioning component (4) are provided. The positioning component (4) is located between the base plate (1) and the top plate (2). There are two sets of positioning components (4). The bottom plate (1) has a first through groove (11) inside, and the top plate (2) has a second through groove (21) inside. The second through groove (21) has a first connecting groove (211) and a second connecting groove (212) on one side, and a third connecting groove (213) on the other side. The first connecting groove (211) and the third connecting groove (213) are on the same vertical horizontal line.

2. The double-sided dispensing fixture for bottom-filling adhesive according to claim 1, characterized in that, The first through groove (11) and the second through groove (21) are provided in two sets respectively, and the first through groove (11) and the second through groove (21) are on the same vertical horizontal line.

3. The double-sided dispensing fixture for bottom-filling adhesive according to claim 1, characterized in that, The top plate (2) has positioning grooves (22) on both sides near the third connecting groove (213). There are two sets of positioning grooves (22), and the positioning grooves (22) are symmetrically distributed with the central axis of the top plate (2) as the reference standard.

4. A double-sided dispensing fixture for bottom-filling adhesive according to claim 3, characterized in that, The positioning groove (22) is provided with a limiting component (3), which includes a threaded post (31) and a positioning post (32). The positioning post (32) is located on the top of the threaded post (31).

5. A double-sided dispensing fixture for bottom-filling adhesive according to claim 4, characterized in that, The threaded column (31) includes a connecting pipe (321) and a positioning block (322). The connecting pipe (321) and the positioning block (322) are integrally formed. The connecting pipe (321) is threaded to the outside of the threaded column (31), and the positioning block (322) is located inside the positioning groove (22).

6. A double-sided dispensing fixture for bottom-filling adhesive according to claim 1, characterized in that, The positioning element (4) is composed of silicone pillars (41). A set of the positioning elements (4) consists of four silicone pillars (41). The silicone pillars (41) are fixed on the end face of the base plate (1) and the silicone pillars (41) are distributed around the first through groove (11).

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