Automatic alignment clamp for chip welding

Abstract

The invention discloses an automatic alignment clamp for chip welding in the technical field of chip welding, comprising a turntable, a substrate connected to the top of the turntable, a fixed side clamp slidably connected to the top of the substrate, a positioning frame slidably connected between the fixed side clamp and the substrate, a mounting cylinder fixedly connected to the bottom of a synchronous support, and a clamping outer cylinder slidably connected to the bottom of the mounting cylinder. A guide cylinder and a limiting rod are fixedly connected to the top in the clamping outer cylinder, the clamping outer cylinder, the guide cylinder and the limiting rod are fixedly connected to the bottom of the synchronous support, an operation cylinder is slidably connected between the clamping outer cylinder and the guide cylinder, a suction cup is fixedly installed at the bottom of the operation cylinder, and a piston rod is slidably connected between the guide cylinder and the limiting rod. According to the chip welding device, time is saved, high efficiency is achieved, the stability of a chip is guaranteed, the welding quality is guaranteed, operation is easy, use is easy, and the chip welding device is easy to put into use.

Description

Technical Field

[0001] The invention relates to the technical field of chip welding, in particular to an automatic alignment clamp for chip welding. Background Art

[0002] Chip, in English, is Chip. Chip generally refers to the carrier of integrated circuits, and is also the result of integrated circuits being designed, manufactured, packaged, and tested. It is usually an independent whole that can be used immediately. When using chips, they need to be connected to different carriers. During the manufacturing process, most chips are soldered on circuit boards. The traditional welding method is to manually take the chip and manually match each pin of the chip with the pin of the circuit board one by one, and then solder the chip on the circuit board. The fixation during welding is also mostly manual, or the chip is fixed by spot welding at two diagonal points first, and then the two points of welding positioning are processed after welding is completed; this method is prone to offset errors during manual alignment and welding, affecting the final production quality control, and each chip and circuit board need to be manually aligned and fixed again, which is time-consuming and labor-intensive, troublesome, and has low production efficiency.

[0003] Based on this, the present invention designs a chip welding automatic alignment clamp to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic chip welding alignment clamp to solve the problem that manual welding proposed in the above background technology is prone to offset errors during the manual alignment and welding process, affecting the final production quality control, and each chip and circuit board needs to be manually aligned and fixed again, which is time-consuming, labor-intensive, troublesome and has low production efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A chip welding automatic alignment clamp comprises a turntable, the top of the turntable is connected to a substrate, the top of the substrate is slidably connected to a fixed side clamp, a positioning frame is slidably connected between the fixed side clamp and the substrate, a corner of the positioning frame located in the substrate is fixedly connected to a chip frame, the top of the positioning frame located at the opposite corner of the chip frame is fixedly connected to a synchronous bracket, the bottom of the synchronous bracket is fixedly connected to a mounting cylinder, the bottom of the mounting cylinder is slidably connected to a clamping outer cylinder, the top of the clamping outer cylinder is fixedly connected to a guide cylinder and a limiting rod, the bottom of the synchronous bracket is fixedly connected to a clamping outer cylinder, a guide cylinder and a limiting rod, the clamping outer cylinder, the guide cylinder and the limiting rod are sequentially sleeved from the outside to the inside, and the center of the clamping outer cylinder is at On the same axis, an operating cylinder is slidably connected between the clamping outer cylinder and the guide cylinder, a suction cup is fixedly installed at the bottom of the operating cylinder, a piston rod is slidably connected between the guide cylinder and the limiting rod, a piston disk is fixedly connected at the bottom of the piston rod, the piston disk is located in the operating cylinder, a fixed groove is provided at the bottom of the guide cylinder, a sliding window is provided in the middle of the limiting rod, a positioning block that can pop out to both sides is installed inside the upper end of the piston rod, the positioning block is located in the sliding window, a hanging ring is fixedly connected to the bottom of the clamping outer cylinder, a positioning ring is fixedly connected to the top of the operating cylinder, the positioning block is located at the top of the positioning ring after extending out and passes through the fixed groove, a push rod is slidably provided in the operating cylinder, and the push rod can press the positioning block back by moving upward.

[0007] Preferably, sliding holes are provided inside both sides of the operating cylinder, the push rod is slidably connected in the sliding holes, a return wedge is fixedly connected to the top of the push rod, the return wedge cooperates with the positioning block to press the positioning block back, and the width of the positioning block is greater than the width of the return wedge in the sliding hole.

[0008] Preferably, a pressing block is elastically connected to the outside of the operating cylinder, a limiting window is provided at the bottom of the sliding hole of the operating cylinder, a wedge-shaped push rod is slidably connected in the limiting window, the inclined surface of the wedge-shaped push rod contacts the bottom of the push rod, the bottom of the push rod is spherical, one end of the wedge-shaped push rod is fixedly connected to the pressing block, and a pressing spring is fixedly connected between the pressing block and the operating cylinder. The limiting window is located above the piston disc.

[0009] Preferably, an air intake rod is fixedly connected to the inner side of the lower end of the pressing block, and an expansion plug is fixedly connected to the end of the air intake rod. A connecting hole is opened at the side wall of the operating cylinder located below the piston disk, and the air intake rod is slidably connected to the connecting hole and the expansion plug can seal the connecting hole.

[0010] Preferably, the positioning block includes an outer block and an inner block, the outer block and the inner block are distributed on both sides of the piston rod and the inner end of the inner block can be folded into the outer block, an outward push spring is fixedly connected between the inner block and the outer block, and the ends of the inner block and the outer block are provided with a folding wedge angle.

[0011] Preferably, a bottom ring is fixedly connected to the inner side of the operating cylinder, the piston disc is located above the bottom ring, a retaining spring is fixedly connected between the hanging ring and the inner top of the clamping outer cylinder, or a friction pad is provided between the hanging ring and the inner wall of the clamping outer cylinder.

[0012] Preferably, a pull rod is fixedly connected to the bottom of the fixed edge clamp, the pull rod passes through the base plate and slidably cooperates with the base plate, and the end of the pull rod is rotatably connected to an eccentric pressure handle.

[0013] Preferably, the bottom of the substrate is elastically connected to a bottom frame, a plurality of bottom through holes are opened in the substrate, a balancing block is fixedly connected to the top of the bottom frame, and the balancing block corresponds to the bottom through holes one by one and is slidably connected in the bottom through holes.

[0014] Preferably, an extension piece is fixedly connected to the side wall of the bottom frame, and the extension piece is sleeved outside the pull rod and located inside the eccentric pressure handle. A suspension rod is fixedly connected to the bottom of the base plate, and the suspension rod passes through the bottom frame and is slidably connected thereto. A suspension spring is fixedly connected between the bottom frame and the base plate.

[0015] Preferably, an inner rod is fixedly connected to the bottom of the mounting tube, inner channels are opened inside the two sides of the clamping outer tube, the inner rod is located in the inner channel and the two are slidably matched, the bottom ring of the mounting tube and the top ring of the clamping outer tube are respectively installed with an iron ring and an iron magnet ring, and the iron ring and the iron magnet ring are adsorbed and fixed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention adjusts the position of the chip frame according to the position of the chip on the circuit board to be welded. After the adjustment, the chip is placed in the chip frame, and then the clamping outer cylinder is pulled down so that the suction cup is tightly attached to the top of the chip and connected with the suction cup. The circuit board to be welded is placed, and one corner of the circuit board is fitted with the corner of the fixed side clamp. Then the operating cylinder is pulled down to just press the chip on the circuit board to be welded, so that the chip and the circuit board are clamped between the chip frame and the suction cup, and the fixing is fast and the alignment is accurate. There is no need to repeat the alignment adjustment steps for mass-produced circuit boards, which saves time and is more efficient. Both hands are freed to a large extent, and no other tools are needed for assistance. The welding operation field of view is good.

[0018] The operating cylinder can move downward for a distance to enlarge the space between the chip and the piston disc, while the internal gas remains unchanged. The chip will be more strongly and firmly attached to the suction cup under the action of atmospheric pressure, thereby enhancing the firmness during the welding process and being able to resist the interference caused by the welding process without being easily loosened, thereby ensuring the stability of the chip and the welding quality.

[0019] The chip and the circuit board are fixed in a very convenient and efficient manner, and the operation is easy, the operation is simple, and the device is easy to use.

[0020] The base plate can be rotated by rotating the turntable, thereby driving the circuit board and chip thereon to rotate together, so as to facilitate the welding of each edge without manual shifting, simplifying the work, improving efficiency, and the synchronous bracket exposes a wider field of view, which is conducive to operation and welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention from a top view;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom-up perspective;

[0024] Figure 3 It is a schematic diagram of a half-section top view of the inner part of the clamping outer cylinder of the present invention;

[0025] Figure 4 It is a schematic diagram of a half-section front view of the inner part of the clamping outer cylinder of the present invention;

[0026] Figure 5 It is a schematic diagram of the enlarged structure of part A of the present invention;

[0027] Figure 6 It is a schematic diagram of the inner half section of the clamping outer cylinder of the present invention when it is clamped and used;

[0028] Figure 7 It is a schematic diagram of the enlarged structure of part B of the present invention;

[0029] Figure 8 For the present invention Figure 4 The enlarged schematic diagram of the cross section at C in the middle;

[0030] Fig. 9 For the present invention Figure 4 The enlarged schematic diagram of the cross section at D in the middle;

[0031] Fig.10 This is a schematic diagram of a stepped cross-section of the clamping outer cylinder of the present invention;

[0032] Fig.11 It is a side half-section schematic diagram of the overall structure of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Turntable; 2. Base plate; 3. Fixed side clamp; 4. Positioning frame; 5. Chip frame; 6. Synchronous bracket; 7. Clamping outer cylinder; 8. Guide cylinder; 9. Limiting rod; 10. Operating cylinder; 11. Suction cup; 12. Piston rod; 13. Piston disc; 14. Fixed groove; 15. Sliding window; 16. Positioning block; 17. Hanging ring; 18. Positioning ring; 19. Push rod; 20. Return wedge block; 21. Pressing block ; 22. Limit window; 23. Press spring; 24. Intake rod; 25. Expansion plug; 26. Connecting hole; 161. Outer block; 162. Inner block; 163. Outward push spring; 164. Closing wedge angle; 31. Bottom ring; 32. Pull rod; 33. Eccentric pressure handle; 34. Bottom frame; 35. Balance block; 36. Extension piece; 37. Hanging rod; 38. Wedge-shaped push rod; 39. Mounting tube 40. Inner rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-11 , the present invention provides a technical solution:

[0037] A chip welding automatic alignment clamp comprises a turntable (1), the top of the turntable (1) is connected to a substrate (2), the top of the substrate (2) is slidably connected to a fixed side clamp (3), a positioning frame (4) is slidably connected between the fixed side clamp (3) and the substrate (2), a chip frame (5) is fixedly connected to a corner of the positioning frame (4) located inside the substrate (2), a synchronous bracket (6) is fixedly connected to the top of the positioning frame (4) located at the opposite corner of the chip frame (5), and the bottom of the synchronous bracket (6) is fixedly connected to There is a mounting cylinder (39), the bottom of the mounting cylinder (39) is slidably connected to a clamping outer cylinder (7), the top of the clamping outer cylinder (7) is fixedly connected to a guide cylinder (8) and a limiting rod (9), the bottom of the synchronous bracket (6) is fixedly connected to the clamping outer cylinder (7), the guide cylinder (8) and the limiting rod (9), the clamping outer cylinder (7), the guide cylinder (8) and the limiting rod (9) are sequentially sleeved from the outside to the inside, the center of the clamping outer cylinder (7) and the center of the chip frame (5) are on the same axis, and the clamping outer cylinder (7) is fixedly connected to the top of the synchronous bracket (6). An operating cylinder (10) is slidably connected between the guide cylinder (7) and the guide cylinder (8), a suction cup (11) is fixedly installed at the bottom of the operating cylinder (10), a piston rod (12) is slidably connected between the guide cylinder (8) and the limiting rod (9), a piston plate (13) is fixedly connected at the bottom of the piston rod (12), and the piston plate (13) is located in the operating cylinder (10), a fixing groove (14) is provided at the bottom of the guide cylinder (8), a sliding window (15) is provided in the middle of the limiting rod (9), and the piston rod (12) is fixedly connected to the bottom of the limiting rod (9). 2) A positioning block (16) is installed inside the upper end and can be ejected to both sides. The positioning block (16) is located in the sliding window (15). A hanging ring (17) is fixedly connected to the bottom of the clamping outer cylinder (7). A positioning ring (18) is fixedly connected to the top of the operating cylinder (10). After the positioning block (16) is extended, it is located at the top of the positioning ring (18) and passes through the fixed groove (14). A push rod (19) is slidably provided in the operating cylinder (10). The push rod (19) can press the positioning block (16) back by moving upward.

[0038] See also Figure 1-3When the present invention is used, the position of the chip frame 5 is first adjusted according to the position where the chip needs to be welded on the circuit board. When adjusting, a transparent circuit board printed part can be used to compare the position of the chip frame 5, or a circuit board printed part is attached to the substrate 2, so that the chip frame 5 can be adjusted accordingly; when adjusting, the positioning frame 4 can be directly pulled, so that the chip frame 5 is aligned with the position to be welded, and the fixed side clamp 3 is pressed downward to fix the positioning frame 4 between the substrate 2 and the fixed side clamp 3. The adjustment is simple and fast. After the adjustment, the chip is placed in the chip frame 5, and then the clamping outer cylinder 7 is pulled down to drive the internal whole and the bottom suction cup 11 to descend together, so that the suction cup 11 is tightly attached to the top of the chip and squeezes out the air in the suction cup 11 so that the chip can be connected to the suction cup 11 under the action of atmospheric pressure, and then the clamping outer cylinder 7 is pushed back upward to reset the clamping outer cylinder 7 and connect and fix it with the mounting cylinder 39. At this time, the chip is lifted by the suction cup 11 and is higher than the substrate 2, which is convenient for placing the circuit board to be welded.

[0039] See also Figure 3-7 After the chip is adsorbed, the circuit board to be soldered is put in, and one corner of the circuit board is fitted with the corner of the fixed side clamp 3, so that the position of the circuit board where the chip needs to be soldered is the same as the position of the chip frame to accommodate the chip, and then the operating cylinder 10 is pulled down. At this time, the outer cylinder 7 is clamped and does not move, and the operating cylinder 10 drives the internal piston rod 12 to descend together. When the operating cylinder 10 moves to the bottom of the clamping outer cylinder 7, the positioning block 16 at the top of the piston rod 12 gradually moves to the fixed groove 14 at the bottom of the guide cylinder 8, so that under the action of the internal spring, the positioning block 16 pops out to both sides and extends into the fixed groove 14, so that the piston rod 12 cannot move upward. At the same time, the positioning block 16 also reaches the lowest end of the sliding window 15, and the piston rod 12 cannot move downward, while the operating cylinder 10 can move downward for a distance. When the hanging ring 17 is fitted with the positioning ring 18, the outer end of the positioning block 16 pops out further without obstruction and blocks above the hanging ring 17, so that the hanging ring 17 can neither move up nor down, thereby fixing the position of the operating cylinder 10 (please refer to Figure 6 , 7 ), stop here and just press the chip on the circuit board to be welded. The operating cylinder 10 cannot move up and down, and it clamps the chip and the circuit board between the chip frame 5 and the suction cup 11. The fixation is fast and the alignment is accurate. No other tools are required, and the welding operation field of view is good.

[0040] When the piston rod 12 cannot move up and down, but the operating cylinder 10 can move down a certain distance, the operating cylinder 10 moves down and the piston plate 13 moves upward relative to the operating cylinder 10, and then the operating cylinder 10 is also fixed and cannot move up and down, thereby making the space between the chip and the piston plate 13 larger, while the internal gas remains unchanged, and the piston plate 13 is restricted in the current position and will not loosen, so the chip will be more firmly attached to the suction cup 11 under the action of atmospheric pressure (please refer to Figure 6, 7 ), thereby enhancing firmness during the welding process, being able to resist interference generated during the welding process and not easily loosen, ensuring the stability of the chip and the welding quality.

[0041] The popping out of the positioning block 16 not only fixes the position of the piston disc 13 but also fixes the position of the operating cylinder 10, and can also limit the relative position of the piston disc 13 and the operating cylinder 10. The operation is simple, and it can be achieved by simply pulling down the operating cylinder 10. The fixation of the chip is strengthened and the positioning of the operating cylinder 10 is achieved, and the fixation of the relative position of the chip and the circuit board is achieved. It is very convenient and efficient, easy to operate, simple to use, and easy to put into use.

[0042] See also Figure 1-2 During the welding process, the chip needs to be welded on multiple sides. The rotation of the turntable 1 can make the substrate 2 rotate, thereby driving the circuit board and the chip thereon to rotate together, thereby facilitating the welding of each side without manual shifting, simplifying the work and improving efficiency. The synchronous bracket 6 exposes a wider field of view, which is conducive to operation and welding.

[0043] After welding is completed, air can be introduced into the suction cup 11, and then the push rod 19 is pushed upward. The push rod 19 moves upward to drive the return wedge block 20 to move upward, thereby squeezing the positioning block 16 inward, so that the positioning block 16 retracts and no longer blocks the hanging ring 17. At this time, the operating cylinder 10 can be moved upward and retracted, and the positioning block 16 retracts into the fixed groove 14. When the operating cylinder 10 is pushed back upward, the piston rod 12 is driven to move upward. When the piston rod 12 moves upward, the positioning block 16 is also driven to move upward. Under the action of the retracted wedge angle 164 of the positioning block 16, the positioning block 16 is squeezed and retracted into the piston rod 12, so that the operating cylinder 10 and the piston rod 12 can be gradually retracted to their original positions, so as to facilitate the next use.

[0044] See also Figure 3 , 4 , wherein sliding holes are provided inside the two sides of the operating cylinder (10), the push rod (19) is slidably connected in the sliding holes, and a return wedge (20) is fixedly connected to the top of the push rod (19), and the return wedge (20) cooperates with the positioning block (16) to press the positioning block (16) back, and the width of the positioning block (16) is greater than the width of the sliding hole return wedge (20).

[0045] The push rod 19 moves upward to drive the return wedge 20 to move upward, thereby squeezing the positioning block 16 inward, causing the positioning block 16 to retract, so that the positioning block 16 can overlap the two sides of the groove accommodating the return wedge 20, while fixing the hanging ring 17 and the operating cylinder 10, and when the return wedge 20 pushes upward, it can act on the positioning block 16 to squeeze it back.

[0046] See also Figure 4 , 5, wherein a pressing block (21) is elastically connected to the outside of the operating cylinder (10), a limiting window (22) is provided at the bottom of the sliding hole of the operating cylinder (10), a wedge-shaped push rod (38) is slidably connected in the limiting window (22), the inclined surface of the wedge-shaped push rod (38) contacts the bottom of the push rod (19), the bottom of the push rod (19) is spherical, one end of the wedge-shaped push rod (38) is fixedly connected to the pressing block (21), a pressing spring (23) is fixedly connected between the pressing block (21) and the operating cylinder (10), and the limiting window (22) is located above the piston disc (13).

[0047] Manual operation is more convenient by directly pressing the pressing blocks 21 on both sides. When the pressing block 21 is pressed, the internal wedge-shaped push rod 38 is driven to move inward, and the push rod 19 is gradually pushed upward under the action of its inclined surface, so that the return wedge block 20 moves upward to squeeze and retract the positioning block 16, which facilitates the unlocking of the operating cylinder 10.

[0048] See also Figure 4 , 5 , wherein an air intake rod (24) is fixedly connected to the inner side of the lower end of the pressing block (21), and an expansion plug (25) is fixedly connected to the end of the air intake rod (24), and a connecting hole (26) is opened at the side wall of the operating cylinder (10) located below the piston plate (13), and the air intake rod (24) is slidably connected to the connecting hole (26) and the expansion plug (25) can block the connecting hole (26).

[0049] In order to separate the chip from the suction cup 11 after welding is completed and facilitate the removal of the welded circuit board, the air intake rod 24 is moved inward while pressing the pressing block 21, so that the expansion plug 25 moves inward so that the originally closed connecting hole 26 becomes connected to the outside, so that air enters the space between the chip and the suction cup 11, and the suction cup 11 loses the pressure acting on the chip and automatically releases the chip. At this time, the suction cup 11 can be directly lifted without lifting the chip or the circuit board, and no other means are required to remove the chip first. The chip is released and the operating cylinder 10 is unlocked while pressing the pressing block 21, so that there is no need to wait for the chip to be released first when resetting the moving operating cylinder 10, thereby improving efficiency and avoiding other operations affecting the quality of the just welded circuit board.

[0050] See also Figure 6 , 7 , wherein the positioning block (16) includes an outer block (161) and an inner block (162), the outer block (161) and the inner block (162) are distributed on both sides of the piston rod (12), and the inner end of the inner block (162) can be folded into the outer block (161), an outward push spring (163) is fixedly connected between the inner block (162) and the outer block (161), and the ends of the inner block (162) and the outer block (161) are both provided with a folding wedge angle (164).

[0051] The inner block 162 and the outer block 161 can be pushed outward at the same time by the outward push spring 163. In order to make the positioning block 16 be well folded in the guide cylinder 8 and span the guide cylinder 8 and play the role of fixing the hanging ring 17, the positioning block 16 is designed as two blocks in which the inner block 162 can be stored in the outer block 161, so that the smaller storage space can accommodate the longer block. The folding wedge angle 164 can be used to achieve that when the inner block 162 and the outer block 161 are pushed back a part, the folding wedge angle 164 contacts the fixing groove 14, thereby realizing the movable The plug rod 12 moves upward to automatically squeeze and retract the inner block 162 and the outer block 161; when the inner block 162 and the outer block 161 are extended to the extreme position, the retracted wedge angle 164 does not contact the inner edge of the fixed groove 14, so it can well define the position of the piston rod 12 and the hanging ring 17, and after the inner block 162 and the outer block 161 are partially squeezed in by pressing the pressing block 21, the retracted wedge angle 164 contacts the fixed groove 14, realizing the function of unlocking the operating cylinder 10 first and then unlocking the piston rod 12, which is convenient for the subsequent resetting of the piston disc 13.

[0052] See also Figure 4 , 5 , wherein a bottom ring (31) is fixedly connected to the inner side of the operating cylinder (10), the piston disc (13) is located above the bottom ring (31), and a retaining spring is fixedly connected between the hanging ring (17) and the inner top of the clamping outer cylinder (7), or a friction pad is provided between the hanging ring (17) and the inner wall of the clamping outer cylinder (7).

[0053] After the operating cylinder 10 is unlocked first, the operating cylinder 10 is moved upward so that the operating cylinder 10 can move upward relative to the piston disc 13, thereby resetting the piston disc 13 to a position in contact with the bottom ring 31. During this process, the positioning block 16 is also gradually retracted, so that when the operating cylinder 10 continues to move upward, the piston disc 13 and the piston rod 12 are also driven upward and reset under the action of the bottom ring 21; after the operating cylinder 10 is reset, the hanging ring 17 can stay in the reset position without external force by maintaining the spring or friction pad, so that there is a certain space between the bottom and the substrate, which is convenient for inserting chips or positioning circuit boards, etc.

[0054] See also Figure 3 , 4 , wherein an inner rod (40) is fixedly connected to the bottom of the mounting tube (39), inner channels are opened inside the two sides of the clamping outer tube (7), the inner rod (40) is located in the inner channel and the two are slidably matched, and the bottom ring of the mounting tube (39) and the top ring of the clamping outer tube (7) are respectively installed with an iron ring and an iron magnet ring, and the iron ring and the iron magnet ring are adsorbed and fixed.

[0055] When the clamping outer cylinder 7 moves downward, it is necessary to use a little force to separate the clamping outer cylinder 7 from the mounting cylinder 39. The inner channel and the inner rod 40 cooperate to provide guidance and support for the clamping outer cylinder 7 to move downward. After the clamping outer cylinder 7 is reset, the iron ring and the iron magnet ring cooperate to keep the clamping outer cylinder 7 in place. Even when the operating cylinder 10 is pulled down subsequently, the clamping outer cylinder 7 and the guide cylinder 8 cannot be driven to move. The magnetic fixation is fast and stable, which is convenient for subsequent operations.

[0056] See also Figure 1 , 2 , 11, wherein a pull rod (32) is fixedly connected to the bottom of the fixed edge clamp (3), the pull rod (32) passes through the base plate (2) and slidably cooperates therewith, and the end of the pull rod (32) is rotatably connected to an eccentric pressure handle (33).

[0057] After adjusting the relative position of the chip frame 5 , the eccentric pressing handle 33 can be rotated and pressed down to pull the pull rod 32 downward, thereby acting on the fixed side clamp 3 to clamp the positioning frame 4 between the fixed side clamp 3 and the substrate 2 .

[0058] The bottom of the base plate (2) is elastically connected to a bottom frame (34), a plurality of bottom through holes are provided in the base plate (2), a balancing block (35) is fixedly connected to the top of the bottom frame (34), and the balancing block (35) corresponds to the bottom through holes one by one and is slidably connected in the bottom through holes.

[0059] When placing the circuit board, by adding balancers 35 around the circuit board, the supporting points of the circuit board can be increased, so that the circuit board can be placed more stably and not easily tilted.

[0060] Among them, an extension piece (36) is fixedly connected to the side wall of the bottom frame (34), and the extension piece (36) is sleeved outside the pull rod (32) and located on the inner side of the eccentric pressure handle (33). The bottom of the base plate (2) is fixedly connected to a suspension rod (37), and the suspension rod (37) passes through the bottom frame (34) and is slidably connected thereto. A suspension spring is fixedly connected between the bottom frame (34) and the base plate (2).

[0061] When the eccentric pressing handle 33 is rotated and pressed down, the extension piece 36 is also pressed down, so that the bottom frame 34 is lifted up while the side clamp 3 is pressed down to fix the positioning frame 4, so that the balance block 35 rises and is flush with the top of the chip frame 5 after the position of the chip frame 5 is adjusted, thereby increasing the support of the circuit board. At the same time, when the position of the chip frame 5 is adjusted, it does not protrude and does not hinder the position adjustment of the chip frame 5. It is simple and flexible to use, saves manpower and material resources, and improves efficiency.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A chip welding automatic alignment clamp, characterized in that: The invention comprises a turntable (1), wherein the top of the turntable (1) is connected to a base plate (2), the top of the base plate (2) is slidably connected to a fixed side clamp (3), a positioning frame (4) is slidably connected between the fixed side clamp (3) and the base plate (2), a corner of the positioning frame (4) located inside the base plate (2) is fixedly connected to a chip frame (5), the top of the positioning frame (4) located at the diagonal of the chip frame (5) is fixedly connected to a synchronous bracket (6), the bottom of the synchronous bracket (6) is fixedly connected to a mounting cylinder (39), the bottom of the mounting cylinder (39) is slidably connected to a clamping outer cylinder (7), the top of the clamping outer cylinder (7) is fixedly connected to a guide cylinder (8) and a limiting rod (9), the clamping outer cylinder (7), the guide cylinder (8) and the limiting rod (9) are sequentially sleeved from the outside to the inside, the center of the clamping outer cylinder (7) and the center of the chip frame (5) are on the same axis, an operating cylinder (10) is slidably connected between the clamping outer cylinder (7) and the guide cylinder (8), A suction cup (11) is fixedly installed at the bottom of the operating cylinder (10); a piston rod (12) is slidably connected between the guide cylinder (8) and the limiting rod (9); a piston plate (13) is fixedly connected to the bottom of the piston rod (12); the piston plate (13) is located in the operating cylinder (10); a fixing groove (14) is provided at the bottom of the guide cylinder (8); a sliding window (15) is provided in the middle of the limiting rod (9); and a sliding door (15) is installed inside the upper end of the piston rod (12) which can be moved in both directions. A positioning block (16) is ejected from the side, the positioning block (16) is located in the sliding window (15), a hanging ring (17) is fixedly connected to the bottom of the clamping outer cylinder (7), a positioning ring (18) is fixedly connected to the top of the operating cylinder (10), the positioning block (16) is located at the top of the positioning ring (18) and passes through the fixed groove (14) after being extended, and a push rod (19) is slidably provided in the operating cylinder (10), and the push rod (19) can press the positioning block (16) back when it moves upward.

2. The chip welding automatic alignment clamp according to claim 1, characterized in that: Sliding holes are provided inside the two sides of the operating cylinder (10), and the push rod (19) is slidably connected in the sliding holes. A return wedge (20) is fixedly connected to the top of the push rod (19). The return wedge (20) cooperates with the positioning block (16) to press the positioning block (16) back, and the width of the positioning block (16) is greater than the width of the sliding hole return wedge (20).

3. The chip welding automatic alignment clamp according to claim 2, characterized in that: The operating cylinder (10) is elastically connected to a pressing block (21) on the outside, and a limit window (22) is provided at the bottom of the sliding hole of the operating cylinder (10). A wedge-shaped push rod (38) is slidably connected in the limit window (22). The inclined surface of the wedge-shaped push rod (38) contacts the bottom of the push rod (19). The bottom of the push rod (19) is spherical. One end of the wedge-shaped push rod (38) is fixedly connected to the pressing block (21). A pressing spring (23) is fixedly connected between the pressing block (21) and the operating cylinder (10). The limit window (22) is located above the piston disc (13).

4. The chip welding automatic alignment clamp according to claim 3, characterized in that: An air intake rod (24) is fixedly connected to the inner side of the lower end of the pressing block (21), and an expansion plug (25) is fixedly connected to the end of the air intake rod (24). A connecting hole (26) is opened at the side wall of the operating cylinder (10) located below the piston disk (13), and the air intake rod (24) is slidably connected to the connecting hole (26) and the expansion plug (25) can block the connecting hole (26).

5. The chip welding automatic alignment clamp according to claim 1, characterized in that: The positioning block (16) includes an outer block (161) and an inner block (162). The outer block (161) and the inner block (162) are distributed on both sides of the piston rod (12), and the inner end of the inner block (162) can be folded into the outer block (161). An outward push spring (163) is fixedly connected between the inner block (162) and the outer block (161). The ends of the inner block (162) and the outer block (161) are both provided with a folding wedge angle (164).

6. The chip welding automatic alignment clamp according to claim 1, characterized in that: A bottom ring (31) is fixedly connected to the inner side of the operating cylinder (10), the piston disc (13) is located above the bottom ring (31), and a retaining spring is fixedly connected between the hanging ring (17) and the inner top of the clamping outer cylinder (7), or a friction pad is provided between the hanging ring (17) and the inner wall of the clamping outer cylinder (7).

7. The chip welding automatic alignment clamp according to claim 1, characterized in that: The bottom of the fixed edge clamp (3) is fixedly connected to a pull rod (32), the pull rod (32) passes through the base plate (2) and slidably cooperates therewith, and the end of the pull rod (32) is rotatably connected to an eccentric pressure handle (33).

8. The chip bonding automatic alignment clamp according to claim 7, characterized in that: The bottom of the base plate (2) is elastically connected to a bottom frame (34), a plurality of bottom through holes are provided in the base plate (2), a balancing block (35) is fixedly connected to the top of the bottom frame (34), and the balancing block (35) corresponds to the bottom through holes one by one and is slidably connected in the bottom through holes.

9. The chip bonding automatic alignment clamp according to claim 8, characterized in that: The side wall of the bottom frame (34) is fixedly connected with an extension piece (36), and the extension piece (36) is sleeved outside the pull rod (32) and located inside the eccentric pressure handle (33). The bottom of the base plate (2) is fixedly connected with a suspension rod (37), and the suspension rod (37) passes through the bottom frame (34) and is slidably connected thereto. A suspension spring is fixedly connected between the bottom frame (34) and the base plate (2).

10. The chip bonding automatic alignment clamp according to claim 1, characterized in that: The bottom of the installation cylinder (39) is fixedly connected with an inner rod (40), and inner channels are opened inside the two sides of the clamping outer cylinder (7). The inner rod (40) is located in the inner channel and the two are slidably matched. The bottom ring of the installation cylinder (39) and the top ring of the clamping outer cylinder (7) are respectively installed with an iron ring and an iron magnet ring, and the iron ring and the iron magnet ring are adsorbed and fixed.

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