An SMT process carrier
By designing an adjustable SMT process carrier, the problems of increased cost and reduced efficiency caused by changes in PCB board size were solved. It was able to flexibly adapt to PCB boards of different sizes, reduce fixture costs and improve work efficiency.
Patent Information
- Application Number
- CN202521977579.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-15
AI Technical Summary
Existing SMT process carriers need to be remanufactured when the PCB board size changes, which leads to increased costs and reduced work efficiency, resulting in low adaptability.
Design a carrier that includes a fixed frame, a width adjustment component, and a length adjustment component. The carrier can be flexibly adjusted through a bidirectional threaded rod, an extension rod, and a sliding groove structure to adapt to PCB boards of different sizes.
It reduces the manufacturing cost of fixtures, improves the efficiency and adaptability of SMT processes, and reduces rework caused by size changes.
Smart Images
Figure CN224684458U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of carrier technology, specifically an SMT process carrier. Background Technology
[0002] SMT is an abbreviation for Surface Mount Technology, which is an electronic assembly technology that uses professional automated assembly equipment such as solder paste printers, pick-and-place machines, and reflow soldering machines to directly attach and solder surface mount components onto the surface of a circuit board. It is one of the technologies commonly used in the production of computer components. SMT reflow trays or reflow carriers are trays or carriers used to hold PCBs and then take them to the reflow oven.
[0003] During use, the SMT process carrier needs to be remade as the size of the PCB changes, which increases the cost of the fixture and affects the efficiency and manufacturing cost of the SMT process. At the same time, the overall adaptability of the device is also low.
[0004] Therefore, this utility model provides an SMT process carrier to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This invention provides an SMT process carrier, which aims to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: It includes a fixed frame and a plate. Two square frames are slidably connected inside the fixed frame. A width adjustment component is provided inside the fixed frame. A length adjustment component includes two extension rods, which are slidably connected inside the two square frames. A sleeve and a rod are fixedly connected to the ends of the two extension rods, respectively. Gear grooves are evenly distributed on the tops of the two extension rods. A fixed frame is fixedly connected to the top of each of the two square frames. A sliding rod is slidably connected inside the fixed frame. A limit spring is fixedly connected to the bottom of the sliding rod, and a rack is fixedly connected to the bottom of the sliding rod. During use, the width and length adjustment mechanisms can be adjusted to meet the support and limiting requirements of plates of different sizes, eliminating the need to remake the carrier according to the size of the plate. This design reduces fixture costs and accelerates SMT process efficiency. When adjusting the fixture width, a knob is turned to rotate the bidirectional threaded rod. This rotation causes two threaded sleeves to move towards or away from each other along the outer edge of the rod, ultimately moving the two sleeves closer together or further apart. Simultaneously, the sleeve rod slides and extends within the sleeve, limiting the board's width in different directions. To adjust the fixture length, the slide rod is pulled to disengage the rack from the meshing groove, releasing the extension rod and allowing it to extend outwards within the frame, further limiting the board's length. This flexible adjustment of length and width allows for the limiting of boards of different sizes, improving adaptability and flexibility while significantly reducing costs.
[0009] As a preferred technical solution of this application, the length adjustment component further includes two limiting springs, which are respectively sleeved on the outside of the two slide rods. The rack engages with the inside of the tooth groove. By engaging the rack with the inside of the tooth groove, the extension rod can be limited after sliding and extending inside the frame, thereby achieving locking after length adjustment.
[0010] As a preferred technical solution of this application, a sleeve is fixedly connected to the outside of one of the extension rods, and a sleeve rod is fixedly connected to the outside of the other extension rod. The sleeve rod is sleeved inside the sleeve, and the overall integrity of the device can be further improved by the sliding extension and contraction of the sleeve inside the sleeve rod.
[0011] As a preferred technical solution of this application, two sliding grooves are provided on the outside of the fixed frame, and the two squares extend to the outside of the fixed frame through the two sliding grooves respectively. The sliding grooves can limit the sliding trajectory of the squares.
[0012] As a preferred technical solution of this application, the width adjustment component includes a bidirectional threaded rod, which is rotatably connected to the inside of the fixed frame. The external thread of the bidirectional threaded rod is connected to two threaded sleeves, which are respectively fixedly connected to the far ends of the two squares. By rotating the bidirectional threaded rod, the two threaded sleeves can be displaced towards or away from each other along the external thread of the bidirectional threaded rod, which can further drive the two squares closer or further away.
[0013] As a preferred technical solution of this application, a knob is fixedly connected to the proximal end of the bidirectional threaded rod. The knob extends to the outside of the fixed frame, and grooves are evenly provided on the outside of the knob. The grooves can improve friction and prevent slippage. The rotation adjustment of the bidirectional threaded rod can be easily controlled by rotating the knob.
[0014] As a preferred technical solution of this application, a support strip is attached to the inner wall of one side of the two opposing frames, and the support strip can provide horizontal support for the plate when the whole device is in use.
[0015] (III) Beneficial Effects
[0016] When using the carrier, the width adjustment component and the length adjustment component allow the distance between the two frames to be adjusted when supporting the width of the board, thereby limiting the width of the supported board. The length adjustment component allows the length of the board to be limited. During use, the width adjustment mechanism and the length adjustment mechanism can be adjusted to meet the support and limiting tasks of boards of different sizes. There is no need to remake the carrier according to the size of the board, which reduces the cost of the fixture and speeds up the SMT process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the cross-section of this utility model;
[0019] Figure 3 This is a structural diagram showing the internal disassembly of the square frame in this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.
[0021] In the picture:
[0022] 1. Fixed frame; 2. Slide groove; 3. Plate; 4. Two-way threaded rod; 5. Knob; 6. Square frame; 7. Extension rod; 8. Gear groove; 9. Sleeve; 10. Sleeve rod; 11. Bearing bar; 12. Threaded sleeve; 13. Fixed bracket; 14. Slide rod; 15. Rack; 16. Limiting spring. 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] This utility model provides an SMT process carrier, such as Figure 1-4 As shown, this SMT process carrier includes: a fixed frame 1 and a board body 3. Two square frames 6 are slidably connected inside the fixed frame 1. A width adjustment component is provided inside the fixed frame 1. A length adjustment component includes two extension rods 7, which are slidably connected inside the two square frames 6. Sleeves 9 and rods 10 are fixedly connected to the ends of the two extension rods 7, respectively. Gear grooves 8 are evenly distributed on the tops of the two extension rods 7. A fixing frame 13 is fixedly connected to the top of each of the two square frames 6. A sliding rod 14 is slidably connected inside the fixing frame 13. A limit spring 16 is fixedly connected to the bottom of the sliding rod 14. A rack 15 is fixedly connected to the bottom of 14. When using the carrier, the width adjustment component and the length adjustment component can be used to adjust the distance between the two square frames 6 when supporting the width of the board 3, thereby limiting the width of the supported board 3. The length adjustment component can limit the length of the board 3. When in use, the width adjustment mechanism and the length adjustment mechanism can be adjusted to meet the support and limiting tasks of boards 3 of different sizes. There is no need to remake the carrier according to the size of the board 3, which reduces the cost of the fixture and speeds up the work efficiency of the SMT process.
[0025] The length adjustment assembly also includes two limiting springs 16, which are respectively sleeved on the outside of the two sliding rods 14. The rack 15 is engaged with the inside of the tooth groove 8. By the rack 15 being engaged with the inside of the tooth groove 8, the extension rod 7 can be limited after sliding and extending inside the frame 6, thus achieving locking after length adjustment. A sleeve 9 is fixedly connected to the outside of one extension rod 7, and a sleeve rod 10 is fixedly connected to the outside of the other extension rod 7. The sleeve rod 10 is sleeved inside the sleeve 9. By the sliding and extending of the sleeve 9 inside the sleeve rod 10, the overall integrity of the device can be further improved.
[0026] Two sliding grooves 2 are provided on the outside of the fixed frame 1. Two square frames 6 extend to the outside of the fixed frame 1 through the two sliding grooves 2 respectively. The sliding grooves 2 can limit the sliding trajectory of the square frames 6.
[0027] The width adjustment assembly includes a bidirectional threaded rod 4, which is rotatably connected to the inside of the fixed frame 1. The external thread of the bidirectional threaded rod 4 is connected to two threaded sleeves 12, which are fixedly connected to the outer ends of the two square frames 6 respectively. By rotating the bidirectional threaded rod 4, the two threaded sleeves 12 can be displaced towards or away from each other along the external thread of the bidirectional threaded rod 4, which can further drive the two square frames 6 closer or further away. A knob 5 is fixedly connected to the near end of the bidirectional threaded rod 4. The knob 5 extends to the outside of the fixed frame 1. The knob 5 has evenly spaced grooves on its outer side to improve friction and prevent slippage. Rotating the knob 5 allows for easy control of the rotation adjustment of the bidirectional threaded rod 4. A support strip 11 is fitted to the inner wall of the opposite side of the two square frames 6. The support strip 11 can provide horizontal support for the plate 3 when the whole device is in use.
[0028] When using this SMT process carrier, to adjust the carrier width, the knob 5 is turned to rotate the bidirectional threaded rod 4. As the bidirectional threaded rod 4 rotates, the two threaded sleeves 12 move towards or away from each other along the outer edge of the bidirectional threaded rod 4. This causes the two threaded sleeves 12 to move the two square frames 6 closer together or further apart. Simultaneously, the sleeve rod 10 slides and extends within the sleeve 9, limiting the board body 3 in different width directions. When adjusting the carrier length, the slide rod 14 is pulled to disengage the rack 15 from the meshing groove 8, releasing the extension rod 7 from its limit. This allows the extension rod 7 to extend outward within the square frame 6, further limiting the length of the board body 3. By flexibly adjusting the length and width, boards of different sizes can be limited, improving adaptability and flexibility while significantly reducing costs.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An SMT process carrier, comprising a fixed frame (1) and a board (3), characterized in that: The fixed frame (1) has two sliding connections inside, and the fixed frame (1) is provided with a width adjustment component inside; The length adjustment assembly includes two extension rods (7), which are slidably connected to the inside of two square frames (6). The ends of the two extension rods (7) are respectively fixedly connected to sleeves (9) and sleeve rods (10). The tops of the two extension rods (7) are evenly provided with toothed grooves (8). The tops of the two square frames (6) are fixedly connected to a fixing frame (13). The inside of the fixing frame (13) is slidably connected to a sliding rod (14). The bottom of the sliding rod (14) is fixedly connected to a limit spring (16), and the bottom of the sliding rod (14) is fixedly connected to a rack (15).
2. The SMT process carrier according to claim 1, characterized in that: The length adjustment assembly also includes two limiting springs (16), which are respectively sleeved on the outside of the two slide rods (14), and the rack (15) is engaged in the inside of the tooth groove (8).
3. The SMT process carrier according to claim 1, characterized in that: One of the extension rods (7) is externally fixedly connected to a sleeve (9), and the other extension rod (7) is externally fixedly connected to a sleeve (10).
4. The SMT process carrier according to claim 1, characterized in that: Two grooves (2) are provided on the outside of the fixed frame (1), and the two square frames (6) extend to the outside of the fixed frame (1) through the two grooves (2).
5. The SMT process carrier according to claim 1, characterized in that: The width adjustment assembly includes a bidirectional threaded rod (4), which is rotatably connected to the inside of the fixed frame (1), and the external thread of the bidirectional threaded rod (4) is connected to two threaded sleeves (12).
6. The SMT process carrier according to claim 5, characterized in that: A knob (5) is fixedly connected to the proximal end of the bidirectional threaded rod (4), and the knob (5) extends to the outside of the fixed frame (1).
7. The SMT process carrier according to claim 1, characterized in that: A bearing strip (11) is fitted onto the inner wall of one of the opposite sides of the two square frames (6).