SMT (Surface Mount Technology) chip mounting jig

Abstract

The utility model discloses an SMT (Surface Mount Technology) chip mounting jig, which relates to the technical field of SMT chip mounting and comprises a jig outer box mechanism, a manual adjustment centering mechanism is rotatably arranged in the jig outer box mechanism, and a mechanical fixing mechanism is rotatably arranged on one side of the manual adjustment centering mechanism. In order to solve the problems that different jigs need to be designed for positioning flatly, compatibility is poor, the jigs are various in variety, disordered in placement, difficult to manage and the like, and the production efficiency of SMT patches is seriously affected due to the fact that corresponding jigs need to be replaced for repositioning every time different patch substrates are switched for production, the utility model aims at solving the problem that the production efficiency of the SMT patches is seriously affected. The fixing center of the circuit board is kept constant, the circuit board is convenient to adapt to substrate changes, patch parameters are adjusted, the production efficiency is improved, and the manual adjustment centering mechanism and the mechanical fixing mechanism are arranged in a matched mode and can be adjusted respectively to adapt to the fixing requirements of different patch substrates.

Description

Technical Field

[0001] This utility model relates to the field of SMT (Surface Mount Technology) technology, specifically to an SMT mounting fixture. Background Technology

[0002] SMT stands for Surface Mount Technology, which is currently the most popular technology and process in the electronics assembly industry. SMT assembly refers to a series of processes that are carried out on the basis of PCB.

[0003] In actual production, some incoming PCB boards and aluminum substrates may warp or deform. The surface mount substrates have a large span and are flexible and droopy, requiring positioning fixtures to position and flatten them. Existing fixtures require different designs for each different surface mount substrate, resulting in poor compatibility, a wide variety of fixtures, chaotic placement, and difficulty in management. Furthermore, each time a different surface mount substrate is switched for production, the corresponding fixture must be replaced and repositioned, which seriously affects the production efficiency of SMT assembly.

[0004] To address the aforementioned issues, an SMT (Surface Mount Technology) fixture is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an SMT placement fixture that solves the problems of existing fixtures in the background art, which require different fixtures to be designed for each different SMT substrate to ensure flat positioning, resulting in poor compatibility, a large variety of fixtures, chaotic placement, and difficulty in management. Furthermore, each time a different SMT substrate is switched for production, the corresponding fixture must be replaced and repositioned, which seriously affects the production efficiency of SMT placement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an SMT placement fixture, including a fixture outer box mechanism, a manually adjustable centering mechanism rotatably disposed inside the fixture outer box mechanism, a mechanical fixing mechanism rotatably disposed on one side of the manually adjustable centering mechanism, the fixture outer box mechanism including an upper cover, the upper cover having four sliding grooves, the manually adjustable centering mechanism including a manually adjustable disc rotatably engaged on the upper cover, a first gear colinearly disposed with the manually adjustable disc, a first rotating tooth meshing on one side of the first gear, two sets of first moving rods movably engaged within the first rotating tooth, the mechanical fixing mechanism including a second rotating tooth disposed parallel to the first rotating tooth, a second moving rod movably engaged within the second rotating tooth, four sets of the first and second moving rods being provided in total, slidably engaged within the four sliding grooves.

[0007] Preferably, the fixture outer box mechanism further includes a sealing box, the sealing box having a motor bayonet, the sealing box being fixed to the upper cover with screws, the lower end of the upper cover being fixedly provided with a reinforcing member, and the upper cover being fixedly provided with a manual control area mark and a mechanical control area mark.

[0008] Preferably, the center of the reinforcement component is provided with a central column.

[0009] Preferably, the manual adjustment disc is arranged collinearly with the center of the first gear, and the number of teeth of the first gear is less than the number of teeth of the first rotating gear.

[0010] Preferably, the first rotating tooth has an arc-shaped groove corresponding to the movement of the first moving rod, the two sides of the first rotating tooth have intersecting openings, and the outer side of the first rotating tooth is provided with a circular ring tooth.

[0011] Preferably, a clamping block is fixed to the upper end of the first moving rod.

[0012] Preferably, the mechanical fixing mechanism further includes a drive motor engaged in the motor bayonet, and a second gear disposed at the output end of the drive motor, wherein the second gear meshes with the second rotating tooth.

[0013] Preferably, the second rotating tooth and the first rotating tooth are components with the same structural support and are arranged vertically side by side.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The SMT placement fixture provided by this utility model, through the setting of the fixture outer box mechanism, keeps the fixed center of the circuit board constant, which is convenient to adapt to changes in the substrate, adjust the placement parameters, and improve production efficiency. It solves the problem that existing fixtures have to be replaced and repositioned every time they switch to different placement substrates, which seriously affects the production efficiency of SMT placement.

[0016] 2. The SMT mounting fixture provided by this utility model, through the combination of a manual centering mechanism and a mechanical fixing mechanism, allows for the adjustment of the first and second moving rods to adapt to the fixing requirements of different mounting substrates, and to the fixing needs of substrates with different lengths and widths. It has good compatibility and solves the problem that existing fixtures require different fixtures to be designed for each different mounting substrate to achieve flat positioning, resulting in poor compatibility, a large variety of fixtures, chaotic placement, and difficulty in management. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the fixture outer box mechanism of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0019] Figure 3 This is a top view of the outer box mechanism of the fixture of this utility model;

[0020] Figure 4 This is a schematic diagram of the manual centering mechanism and the mechanical fixing mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram showing the disassembled structure of the manual centering mechanism and the mechanical fixing mechanism of this utility model.

[0022] In the diagram: 1. Fixture outer box mechanism; 11. Sealing box; 111. Motor bayonet; 12. Top cover; 121. Manual control area marking; 122. Mechanical control area marking; 13. Slide groove; 14. Reinforcing component; 141. Central column; 2. Manual adjustment centering mechanism; 21. Manual adjustment disc; 22. First gear; 23. First rotating gear; 231. Arc groove; 232. Circular ring gear; 233. Intersecting joint; 24. First moving rod; 241. Clamping block; 3. Mechanical fixing mechanism; 31. Drive motor; 32. Second gear; 33. Second rotating gear; 34. Second moving rod. Detailed Implementation

[0023] 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.

[0024] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0025] Combination Figure 1 This utility model discloses an SMT placement fixture, including a fixture outer box mechanism 1. A manual adjustment centering mechanism 2 is rotatably arranged inside the fixture outer box mechanism 1. A mechanical fixing mechanism 3 is rotatably arranged on one side of the manual adjustment centering mechanism 2. The fixture outer box mechanism 1 includes a top cover 12 with four sliding grooves 13. The manual adjustment centering mechanism 2 includes a manual adjustment disc 21 rotatably engaged with the top cover 12, a first gear 22 colinearly arranged with the manual adjustment disc 21, and a first rotating tooth 23 meshing with one side of the first gear 22. Two sets of first moving rods 24 are movably engaged within the first rotating tooth 23. The mechanical fixing mechanism 3 includes a second rotating tooth 33 arranged parallel to the first rotating tooth 23, and a second moving rod 34 movably engaged within the second rotating tooth 33. A total of four sets of first and second moving rods 24 are arranged, slidably engaged within the four sliding grooves 13.

[0026] Specifically, the top cover 12 is fixedly installed, and the four slides 13 are arranged in a circular array. The manual adjustment disc 21 and the first gear 22 can rotate synchronously. The first gear 22 can drive the first rotating tooth 23 to rotate through meshing. Since the first moving rod 24 is movably engaged in the slide 13 and the first rotating tooth 23, the rotation of the first rotating tooth 23 can drive the first moving rod 24 to move towards each other along the opposite slides 13. This structure allows the surface mount circuit board to be manually centered through the manual adjustment centering mechanism 2 to complete the initial adjustment. After the initial adjustment is completed, the second moving rod 34, under the mechanical drive of the second rotating tooth 33, also moves along the other two sets of opposite slides 13 to achieve mechanical surface mount fixing. The fixture keeps the fixing center of the circuit board constant, which is convenient to adapt to changes in the substrate, adjust the surface mount parameters, and improve production efficiency. At the same time, the separate adjustment of the first moving rod 24 and the second moving rod 34 can adapt to the fixing requirements of different surface mount substrates and the fixing requirements of substrates with different lengths and widths, with good compatibility.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Example 1:

[0029] Combination Figures 2-5 The fixture outer box mechanism 1 also includes a sealing box 11. The sealing box 11 has a motor bayonet 111 inside. The sealing box 11 and the upper cover 12 are fixed together with screws. The lower end of the upper cover 12 is fixedly provided with a reinforcement member 14. The upper cover 12 is fixedly provided with a manual control area mark 121 and a mechanical control area mark 122. The motor bayonet 111 is used to fix the drive motor 31. The sealing box 11 and the upper cover 12 realize the sealing of the internal structure. The reinforcement member 14 reinforces the upper cover 12. The manual control area mark 121 and the mechanical control area mark 122 indicate the adjustment position.

[0030] The center of the reinforcement 14 is provided with a central column 141, which passes through and fixes the first rotating tooth 23, the second rotating tooth 33 and the reinforcement 14, so as to realize the internal sleeve fixation of the fixture outer box mechanism 1.

[0031] Example 2:

[0032] Combination Figure 4 and Figure 5 The hand adjustment disc 21 and the first gear 22 are set on the same line. The number of teeth of the first gear 22 is less than the number of teeth of the first rotating tooth 23. The hand adjustment disc 21 drives the first gear 22 to rotate synchronously, thereby realizing the direction adjustment of the first rotating tooth 23. The fact that the number of teeth of the first gear 22 is less than that of the first rotating tooth 23 can improve the rotation accuracy of the first rotating tooth 23.

[0033] The first rotating tooth 23 has an arc-shaped groove 231 corresponding to the movement of the first moving rod 24. The two sides of the first rotating tooth 23 have intersecting openings 233. The outer side of the first rotating tooth 23 has a circular ring tooth 232. The first moving rod 24 is slidably disposed in the arc-shaped groove 231. The position of the intersecting opening 233 corresponds to the rotation range of the second moving rod 34 to prevent it from affecting the displacement of the mechanical fixing mechanism 3. The circular ring tooth 232 meshes with the first gear 22 to achieve transmission.

[0034] A clamping block 241 is fixed to the upper end of the first moving rod 24. The clamping block 241 facilitates the straight-line fixing of the side of the substrate.

[0035] The mechanical fixing mechanism 3 also includes a drive motor 31 engaged in the motor bayonet 111, a second gear 32 disposed at the output end of the drive motor 31, the second gear 32 meshing with the second rotating tooth 33, the drive motor 31 driving the second gear 32 to rotate, and simultaneously driving the second rotating tooth 33 to rotate to realize the position adjustment of the second moving rod 34.

[0036] The second rotating tooth 33 and the first rotating tooth 23 are components with the same structural support, arranged vertically side by side. The mutual perpendicularity of the second rotating tooth 33 and the first rotating tooth 23 corresponds to the vertical distribution of the second moving rod 34 and the first moving rod 24, so as to realize the individual adjustment of the opposing second moving rod 34 and the first moving rod 24.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An SMT placement fixture, comprising a fixture outer box mechanism (1), characterized in that: The jig outer box mechanism (1) is internally equipped with a manual centering mechanism (2), and a mechanical fixing mechanism (3) is rotatably provided on one side of the manual centering mechanism (2); The fixture outer box mechanism (1) includes an upper cover (12) with four sliding grooves (13) on the upper cover (12). The manual centering mechanism (2) includes a manual adjustment disc (21) that is rotatably engaged on the upper cover (12), a first gear (22) that is colinearly arranged with the manual adjustment disc (21), and a first rotating tooth (23) that meshes with one side of the first gear (22). Two sets of first moving rods (24) are movably engaged in the first rotating tooth (23). The mechanical fixing mechanism (3) includes a second rotating tooth (33) arranged parallel to the first rotating tooth (23) and a second moving rod (34) that is movably engaged in the second rotating tooth (33). There are four sets of the first moving rods (24) and the second moving rods (34), which are slidably engaged in the four sliding grooves (13).

2. The SMT mounting fixture according to claim 1, characterized in that: The fixture outer box mechanism (1) also includes a sealing box (11), which has a motor bayonet (111) inside. The sealing box (11) and the upper cover (12) are fixed together with screws. The lower end of the upper cover (12) is fixedly provided with a reinforcing member (14). The upper cover (12) is fixedly provided with a manual control area mark (121) and a mechanical control area mark (122).

3. The SMT mounting fixture according to claim 2, characterized in that: The center of the reinforcement member (14) is provided with a central column (141).

4. The SMT mounting fixture according to claim 1, characterized in that: The manual adjustment disc (21) and the first gear (22) are arranged with their centers on the same line, and the number of teeth of the first gear (22) is less than the number of teeth of the first rotating gear (23).

5. An SMT placement fixture according to claim 1, characterized in that: The first rotating tooth (23) has an arc-shaped groove (231) corresponding to the movement of the first moving rod (24), and staggered openings (233) are provided on both sides of the first rotating tooth (23). A circular ring tooth (232) is provided on the outer side of the first rotating tooth (23).

6. The SMT placement fixture according to claim 1, characterized in that: A clamping block (241) is fixed to the upper end of the first moving rod (24).

7. An SMT mounting fixture according to claim 2, characterized in that: The mechanical fixing mechanism (3) also includes a drive motor (31) engaged in the motor bayonet (111) and a second gear (32) disposed at the output end of the drive motor (31), wherein the second gear (32) meshes with the second rotating tooth (33).

8. An SMT placement fixture according to claim 1, characterized in that: The second rotating tooth (33) and the first rotating tooth (23) are components with the same structural support and are arranged vertically side by side.

Images