Reflow soldering clamp used in SMT (Surface Mount Technology)

Abstract

The utility model provides a reflow soldering fixture for SMT (surface mount technology), which relates to the technical field of reflow soldering fixtures for SMT, and comprises a support underframe, the clamping assembly is driven; the driving clamping assembly comprises a motor fixedly connected to the bottom end of the supporting bottom frame, the driving end of the motor is fixedly connected with a driving bevel gear, one end of the outer side of the supporting bottom frame is rotationally connected with a first driven bevel gear, and the other end of the outer side of the supporting bottom frame is rotationally connected with a second driven bevel gear. According to the design, the adjustable clamp is used to adapt to elements of different sizes and types, the dependence on various special clamps is reduced, excessive clamping of the clamp is avoided, the risk of damage is reduced, the effect of fine clamping adjustment can be continuously achieved through manual operation while machine clamping is stopped, and the production efficiency is improved. Therefore, the stress at the clamping position of the workpiece to be machined can be reduced while the positioning effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to SMT patch reflow soldering fixture technical field especially relates to a kind of reflow soldering fixture in SMT patch. BACKGROUND

[0002] In surface mount technology patch process, reflow soldering fixture is a kind of specially designed fixing device, for keeping the position of printed circuit board and its components stable during welding process.

[0003] The existing part of fixture is usually fixed design, and is designed and manufactured for specific size and type of patch component, which leads to frequent replacement of fixture when welding components of different sizes, shapes and types, reduces production efficiency, and increases production cost.

[0004] Therefore, the utility model provides a kind of reflow soldering fixture in SMT patch. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in prior art, and provides a kind of reflow soldering fixture in SMT patch.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of reflow soldering fixture in SMT patch, including;

[0007] Support chassis;

[0008] Drive clamping assembly;The drive clamping assembly includes motor fixedly connected at the bottom end of support chassis, the driving end of the motor is fixedly connected with driving bevel gear, one end of the outer side of support chassis is rotatably connected with driven bevel gear one, the other end of the outer side of support chassis is rotatably connected with driven bevel gear two, the far end of driven bevel gear one and driven bevel gear two is fixedly connected with lead screw, the outer side of lead screw is slidably connected with clamping block, the top end of support chassis is fixedly connected with workbench, the inside of drive clamping assembly is movably connected with pressure reaction component;

[0009] Fine adjustment component;The fine adjustment component includes electromagnetic block fixedly connected in the inside of clamping block, metal block is slidably connected in the inside of clamping block, straight tooth gear is rotatably connected in the inside of clamping block, adjustment handle is fixedly connected on one side of straight tooth gear.

[0010] Preferably, the pressure reaction assembly comprises a reactor fixedly connected to a clamping block, a cylinder fixedly connected to a bottom end of the clamping block, a support ring fixedly connected to an inner wall of the cylinder, a spring fixedly connected to one end of the support ring, a telescopic column slidingly connected to an inner portion of the cylinder, a contact block fixedly connected to one end of the telescopic column close to the reactor, and a clamping plate fixedly connected to the other end of the telescopic column away from the contact block.

[0011] Preferably, one end of the spring away from the support ring is fixedly connected to the telescopic column.

[0012] Preferably, the bottom end of the clamping plate is slidingly connected to the sliding groove.

[0013] Preferably, the outer side of the lead screw is threadedly connected to the straight gear, and the bottom end of the metal block is engaged with the outer side of the straight gear.

[0014] Preferably, the driving bevel gear is meshingly connected with the driven bevel gear one, and the driving bevel gear is meshingly connected with the driven bevel gear two.

[0015] Preferably, the outer side of the clamping block is slidingly connected to the workbench.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that

[0017] The utility model discloses a kind of clamps for reflow soldering in SMT patch, including workbench, motor, driving bevel gear, driven bevel gear one, driven bevel gear two, floating block, metal block, straight gear, telescopic column, contact block, spring, clamping plate, reaction ware, sliding groove and lead screw, the driving bevel gear is fixedly connected to the motor, the driven bevel gear one is fixedly connected to the driving bevel gear, the driven bevel gear two is fixedly connected to the driving bevel gear, the floating block is fixedly connected to the driven bevel gear one, the metal block is fixedly connected to the floating block, the straight gear is fixedly connected to the metal block, the telescopic column is slidingly connected to the straight gear, the contact block is fixedly connected to one end of the telescopic column, the spring is fixedly connected to the other end of the telescopic column, the clamping plate is fixedly connected to the telescopic column, the reaction ware is fixedly connected to the clamping plate, the sliding groove is arranged in the clamping block, and the lead screw is fixedly connected to the workbench. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of the reflow soldering clamp for SMT patch is provided for the utility model;

[0019] Figure 2 A driving clamping assembly structure schematic view of the reflow soldering clamp for SMT patch is provided for the utility model;

[0020] Figure 3 This utility model provides a schematic diagram of the pressure reaction component structure of a reflow soldering fixture for SMT chip mounting;

[0021] Figure 4 This utility model provides a schematic diagram of a fine adjustment component for a reflow soldering fixture used in SMT assembly.

[0022] Legend:

[0023] 1. Support frame;

[0024] 2. Drive clamping assembly; 21. Motor; 22. Driving bevel gear; 23. Driven bevel gear one; 24. Driven bevel gear two; 25. Lead screw; 26. Clamping block; 27. Worktable;

[0025] 3. Pressure reaction assembly; 31. Reactor; 32. Cylinder; 33. Support ring; 34. Spring; 35. Telescopic column; 36. Contact block; 37. Clamping plate; 38. Slide groove;

[0026] 4. Fine adjustment component; 41. Electromagnetic block; 42. Metal block; 43. Spur gear; 44. Adjustment handle. Detailed Implementation

[0027] 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.

[0028] like Figure 1 - Figure 2 As shown, this embodiment provides a technical solution: a reflow soldering fixture for SMT chip mounting, comprising;

[0029] Support frame 1;

[0030] Drive clamping assembly 2; Drive clamping assembly 2 includes a motor 21 fixedly connected to the bottom end of the support base 1. The drive end of the motor 21 is fixedly connected to a drive bevel gear 22. A driven bevel gear 23 is rotatably connected to one outer end of the support base 1. The drive bevel gear 22 and the driven bevel gear 23 are meshed. A driven bevel gear 24 is rotatably connected to the other outer end of the support base 1. The drive bevel gear 22 and the driven bevel gear 24 are meshed. A lead screw 25 is fixedly connected to the opposite ends of the driven bevel gear 23 and the driven bevel gear 24. A clamping block 26 is slidably connected to the outside of the lead screw 25. A worktable 27 is fixedly connected to the top end of the support base 1. The outside of the clamping block 26 is slidably connected to the worktable 27.

[0031] The support base 1 serves as the basic structure of the entire device, providing stability and a fixed position. The motor 21 provides the power source to drive the operation of the entire clamping assembly. The driving bevel gear 22 transmits the power of the motor 21 to the driven bevel gear. The driven bevel gear 1 23 and the driven bevel gear 24, through meshing with the driving bevel gear 22, transmit the rotational motion to the lead screw 25. The lead screw 25 converts the rotational motion into linear motion, pushing or pulling the clamping block 26. The clamping block 26 acts directly on the workpiece, realizing the clamping and release of the workpiece. The worktable 27 is fixed on the top of the support base 1, providing a stable working platform for the workpiece to be processed, ensuring that the workpiece will not move or deform during processing, thereby ensuring the processing quality.

[0032] like Figure 1 - Figure 3 As shown, a pressure reaction assembly 3 is movably connected inside the drive clamping assembly 2. The pressure reaction assembly 3 includes a reactor 31 fixedly connected to the clamping block 26. A cylinder 32 is fixedly connected to the bottom end of the clamping block 26. A support ring 33 is fixedly connected to the inner wall of the cylinder 32. A spring 34 is fixedly connected to one end of the support ring 33. A telescopic column 35 is slidably connected inside the cylinder 32. The end of the spring 34 away from the support ring 33 is fixedly connected to the telescopic column 35. A contact block 36 is fixedly connected to the end of the telescopic column 35 near the reactor 31. A locking plate 37 is fixedly connected to the end of the telescopic column 35 away from the contact block 36. A sliding groove 38 is opened inside the clamping block 26. The bottom end of the locking plate 37 is slidably connected to the sliding groove 38.

[0033] Reactor 31 is fixedly connected to clamping block 26 and is used to detect changes in pressure or force on clamping block 26. By monitoring the pressure of clamping block 26 in real time, the precise control of clamping force can be ensured, avoiding excessive or insufficient pressure on the workpiece, thereby protecting the workpiece from damage. The interior of cylinder 32 is used to accommodate other components of pressure reaction assembly 3. Support ring 33 provides a fixing point for spring 34, ensuring that spring 34 can maintain a stable position and shape when subjected to force, thereby achieving the expected elastic response. Telescopic column 35 can slide freely inside cylinder 32 and expand and contract according to changes in pressure on clamping block 26. This design enables pressure reaction assembly 3 to respond to pressure changes during clamping in real time and make corresponding adjustments. Contact block 36 is fixedly connected to one end of telescopic column 35 near reactor 31 and is used to contact reactor 31 or other components or transmit signals. The design of clamping plate 37 is to directly contact the workpiece to be processed to achieve the positioning effect. The design of slide groove 38 allows clamping plate 37 to slide freely inside clamping block 26 while maintaining a tight fit with clamping block 26.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the fine adjustment component 4 includes an electromagnetic block 41 fixedly connected inside the clamping block 26, a metal block 42 slidably connected inside the clamping block 26, a spur gear 43 rotatably connected inside the clamping block 26, the outer side of the lead screw 25 threadedly connected to the spur gear 43, the bottom end of the metal block 42 engaging with the outer side of the spur gear 43, and an adjustment handle 44 fixedly connected to one side of the spur gear 43.

[0035] The electromagnetic block 41, through the action of electromagnetic force, can precisely control the position and movement of the metal block 42, thereby achieving fine adjustment of the clamping block 26. This design improves the stability of the clamping process. The metal block 42, as the medium for transmitting electromagnetic force, transmits the force generated by the electromagnetic block 41 to the spur gear 43, thereby achieving fine adjustment of the position of the clamping block 26. This design makes the clamping process more precise and flexible. The spur gear 43 is threadedly connected to the lead screw 25 to achieve reciprocating movement of the clamping block 26. The adjustment handle 44 provides a manual operation mode, allowing users to finely adjust the position of the clamping block 26 according to the actual situation. This design increases the adjustment of the clamping stress of the reflow soldering fixture, meeting the processing requirements of different workpieces.

[0036] Working principle:

[0037] like Figure 1 - Figure 4 As shown:

[0038] In use: First, place the workpiece on the worktable 27 and then start the motor 21. The motor 21 drives the driving bevel gear 22 to rotate, thereby causing the driven bevel gear 1 23 and driven bevel gear 24 to rotate synchronously. This, in turn, drives the lead screws 25 on both sides to rotate. At this time, the electromagnetic block 41 is in the closed state, so that the metal block 42 engages with the spur gear 43 under the action of gravity. When the lead screw 25 rotates, it can drive the threaded connection of the spur gear 43 to move closer to the clamping block 26, thereby fixing the workpiece. When the clamping plate 37 contacts the surface of the workpiece, the clamping plate 37 will be subjected to pressure. This causes the spring 34 to deform, thereby making the contact block 36 on the telescopic column 35 contact the reactor 31, thus stopping the operation of the motor 21. At this time, the electromagnetic block 41 can be activated, which will attract the metal block 42, causing the metal block 42 to disengage from the limit of the spur gear 43. Then, by rotating the adjustment handle 44, which is fixedly connected to the spur gear 43, the spur gear 43 will rotate and move on the lead screw 25. This achieves the effect of adjusting the position of the clamping block 26, ensuring that the clamping plate 37 is positioned on the workpiece, and accurately adjusting the stress on the workpiece, avoiding the problem of stress concentration and damage caused by excessive rotation of the motor 21.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A reflow soldering fixture for SMT (Surface Mount Technology) assembly, characterized in that, include; Support base frame (1); Drive clamping assembly (2); The drive clamping assembly (2) includes a motor (21) fixedly connected to the bottom end of the support base (1), the drive end of the motor (21) is fixedly connected to an active bevel gear (22), one outer end of the support base (1) is rotatably connected to a driven bevel gear (23), the other outer end of the support base (1) is rotatably connected to a driven bevel gear (24), the opposite ends of the driven bevel gear (23) and the driven bevel gear (24) are fixedly connected to a lead screw (25), the outer side of the lead screw (25) is slidably connected to a clamping block (26), the top end of the support base (1) is fixedly connected to a worktable (27), and the inside of the drive clamping assembly (2) is movably connected to a pressure response assembly (3); Fine adjustment component (4); the fine adjustment component (4) includes an electromagnetic block (41) fixedly connected inside the clamping block (26), a metal block (42) slidably connected inside the clamping block (26), a spur gear (43) rotatably connected inside the clamping block (26), and an adjustment handle (44) fixedly connected to one side of the spur gear (43).

2. A reflow soldering fixture for SMT assembly according to claim 1, characterized in that: The pressure reaction assembly (3) includes a reactor (31) fixedly connected to a clamping block (26). A cylinder (32) is fixedly connected to the bottom end of the clamping block (26). A support ring (33) is fixedly connected to the inner wall of the cylinder (32). A spring (34) is fixedly connected to one end of the support ring (33). A telescopic column (35) is slidably connected inside the cylinder (32). A contact block (36) is fixedly connected to the end of the telescopic column (35) near the reactor (31). A clamping plate (37) is fixedly connected to the end of the telescopic column (35) away from the contact block (36). A sliding groove (38) is opened inside the clamping block (26).

3. A reflow soldering fixture for SMT assembly according to claim 2, characterized in that: The end of the spring (34) away from the support ring (33) is fixedly connected to the telescopic column (35).

4. A reflow soldering fixture for SMT assembly according to claim 2, characterized in that: The bottom end of the card plate (37) is slidably connected to the slide groove (38).

5. A reflow soldering fixture for SMT assembly according to claim 1, characterized in that: The outer side of the lead screw (25) is threaded onto the spur gear (43), and the bottom end of the metal block (42) engages with the outer side of the spur gear (43).

6. A reflow soldering fixture for SMT assembly according to claim 1, characterized in that: The driving bevel gear (22) is meshed with the driven bevel gear one (23), and the driving bevel gear (22) is meshed with the driven bevel gear two (24).

7. A reflow soldering fixture for SMT assembly according to claim 1, characterized in that: The outer side of the clamping block (26) is slidably connected to the worktable (27).

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