CN115625465B

CN115625465B - Diode welding equipment capable of preventing pins from being broken

Info

Publication number: CN115625465B
Application number: CN202211335926.7A
Authority: CN
Inventors: 刘吉海
Original assignee: Semtech Semiconductor Technology Dongguan Co Ltd
Current assignee: Semtech Semiconductor Technology Dongguan Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-07-28
Anticipated expiration: 2042-10-28
Also published as: CN115625465A

Abstract

The invention relates to the technical field of welding devices, in particular to diode welding equipment for preventing pins from being broken, which comprises a fixed seat for clamping a diode, wherein the diode can rotate in the fixed seat, a welding plate sliding along the extending direction of the pins of the diode and a clamping mechanism arranged on the welding plate and used for clamping the pins are arranged at the side of the fixed seat, a correction component for repairing the pins along with the clamping of the clamping mechanism is arranged on the clamping mechanism, the pins of the diode are protected through the clamping mechanism, the pins of the diode are prevented from being broken, and meanwhile, the pins of the diode are prevented from being displaced through the secondary positioning of the clamping mechanism, and the correction component can play a role of guiding the pins while repairing the pins of the diode along with the clamping action of the clamping mechanism through the arrangement of the correction component, so that two pins of the diode can be accurately butted with a workpiece.

Description

Diode welding equipment capable of preventing pins from being broken

Technical Field

The invention relates to the technical field of welding devices, in particular to diode welding equipment for preventing pins from being broken.

Background

The diode is an electronic device made of semiconductor materials (silicon, selenium, germanium and the like), two anode pins and cathode pins of the diode are required to be welded to a welded object through a welding machine in the process of processing the diode, the welding device for processing the diode generally refers to a low-voltage single-point welding machine, the basic idea is that the welding is realized by utilizing the principle of charging and discharging an electrolytic capacitor, the existing welding device is inconvenient to clamp and fix the diode when the diode is welded, the diode is easy to displace and inconvenient to weld in the process of welding the diode, pins of the diode are in a suspended state, and the pins of the diode are easy to bend and break in the process of welding the diode.

Chinese patent CN217475182U discloses a welding set for diode processing, which comprises a workbench, the side of workstation is provided with base, controller, welder, servo slip table, fixed establishment and protection mechanism, its fixed establishment is through fixed lath down and go up fixed lath with diode centre gripping and fix it, thereby avoid the problem of displacement to appear in the in-process of welding diode, after passing through T type sliding block slidable mounting with the mounting panel through protection mechanism on the processing bench, can let the positive and negative pole pin cover of diode in the guard post, and with pin elastic clamping between the holding strip, thereby prevent to bend the rupture when welding to the diode pin, though the purpose of protecting the pin of diode has been played through the guard post, but its pin through the diode passes the mode that the guard post exposes its pin again, after the welding is accomplished, the inconvenient diode is taken out from the guard post, can increase staff's operation burden from this, simultaneously in the removal process of diode, because current loading attachment can cause the pin in the guard post in the removal process can cause the pin to take place in the holding strip in the certain slope of diode, if the two can ' T take place in the holding strip, the pin is difficult to take place in the guard post, if the accurate, can ' T take place between the two pairs of the holding strip, can's the pin takes place, the protector is difficult to take place, and the two if the pin is inserted between the two protector posts are accurate, can ' T take place, the protector has the pin has the big to the end.

Disclosure of Invention

According to the diode welding equipment capable of preventing the pins from being broken, the pins of the diode are protected through the clamping mechanism, the pins of the diode are prevented from being broken, meanwhile, the pins of the diode are prevented from being displaced through secondary positioning of the clamping mechanism, and the correction assembly can repair the pins of the diode along with the clamping action of the clamping mechanism and plays a role in guiding the pins, so that two pins of the diode can be accurately butted with a workpiece.

In order to solve the problems in the prior art, the invention adopts the following technical scheme:

the utility model provides a prevent diode welding equipment of pin rupture, includes the fixing base that is used for carrying out the centre gripping to the diode, and the diode can rotate in the fixing base, and the side of fixing base is provided with along the gliding welded plate of the extending direction of the pin of diode and sets up on the welded plate and be used for carrying out the fixture of centre gripping to the pin, is provided with on the fixture and carries out prosthetic correction subassembly to the pin along with fixture's centre gripping.

Preferably, the welding plate is provided with a chute perpendicular to the extending direction of the pins, the clamping mechanism is provided with clamping assemblies which are the same as the pins in number and correspond to each other one by one, each clamping assembly comprises two clamping plates, the two clamping plates can slide on the chute, and a transmission assembly which enables the two clamping plates to slide relatively is arranged between the two clamping plates.

Preferably, the number of the deviation rectifying components is the same as that of the clamping components and corresponds to the number of the clamping components one by one, the deviation rectifying components comprise grooves respectively positioned at the middle parts of the opposite sides of the two clamping plates, and after the grooves between the two clamping plates are closed, clamping holes penetrating through the clamping components are formed.

Preferably, the diameter of the clamping hole gradually decreases from one end of the clamping hole close to the fixing seat to one end of the clamping hole far away from the fixing seat.

Preferably, the deviation rectifying assembly further comprises inclined planes which are respectively positioned on opposite sides of the two clamping plates and used for guiding the pins to slide towards the grooves of the clamping plates, and the inclined planes on the two clamping plates are matched with each other.

Preferably, the transmission assembly comprises a gear and two racks, the gear can rotate at the bottom of the welding plate, the gear is positioned between the two clamping plates, the two racks are respectively and fixedly connected to the bottoms of the two clamping plates, and the two racks are both connected with the gear in a meshed manner.

Preferably, the clamping mechanism is further provided with first guide plates, the number of which is the same as that of the clamping assemblies, the first guide plates are fixedly connected to the fixing base, one side, close to the clamping plates, of each first guide plate is provided with an inclined first guide groove, one of the clamping plates in the clamping assemblies is in sliding fit with the first guide groove, and when the welding plate drives the clamping plate to move towards the fixing base, the first guide plate can drive the clamping plate in sliding fit with the first guide plate to move.

Preferably, the clamping mechanism is further provided with second guide plates with the same number as the clamping assemblies, the second guide plates can be slidably positioned on the welding plates, the second guide plates are elastically connected with the welding plates, the sliding directions of the second guide plates and the clamping plates are mutually perpendicular, one side, close to the clamping plates, of the second guide plates is provided with inclined second guide grooves, one of the clamping plates in the clamping assemblies is in sliding fit with the second guide grooves, and the fixing base is provided with a fixing assembly for fixing the second guide plates and starting or closing the fixing assembly through the butt joint of the welding plates and the fixing base.

Preferably, the fixing component comprises a jack arranged on the fixing seat, a plug connector arranged on the second guide plate and a trigger used for controlling the connection state of the jack and the plug connector, and the trigger is positioned on one side, close to the welding plate, of the fixing seat.

Preferably, the bottom of the welding plate is provided with a servo sliding table for driving the welding plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the pins of the diode are protected through the clamping mechanism, breakage of the pins is prevented, meanwhile, the pins of the diode are prevented from being displaced through secondary positioning of the clamping mechanism, the correction assembly is arranged, so that the correction assembly can repair the pins of the diode along with the clamping action of the clamping mechanism, the clamping mechanism can clamp the pins conveniently, the two pins can also play a role in guiding, the two pins of the diode can be accurately butted with a workpiece, the workpiece and the pins can be welded conveniently by the welding assembly, and the stability of equipment is improved.

Drawings

FIG. 1 is a schematic perspective view of a diode soldering apparatus for preventing pin breakage;

FIG. 2 is a schematic perspective view of a fixing base, a clamping mechanism and a welding plate in a diode welding device for preventing pins from being broken;

FIG. 3 is a state diagram of a clamping mechanism in a diode welding apparatus for preventing pin breakage;

FIG. 4 is a state diagram of a clamping mechanism in a diode soldering apparatus for preventing pin breakage;

FIG. 5 is a schematic perspective view of a bonding plate in a diode bonding apparatus for preventing pin breakage;

FIG. 6 is a schematic perspective view of a second guide plate and a bonding plate in a diode bonding apparatus for preventing pin breakage;

FIG. 7 is a schematic diagram showing a perspective view of a clamping assembly in a diode soldering apparatus for preventing pin breakage;

FIG. 8 is a schematic diagram showing a second perspective view of a clamping assembly of a diode soldering apparatus for preventing pin breakage;

FIG. 9 is an elevation view of a clamping assembly in a pin breaking prevention diode welding apparatus;

FIG. 10 is a side view of one of the clamping plates in a pin breaking prevention diode welding apparatus;

FIG. 11 is a schematic perspective view showing a first guide plate and a fixing base in a diode welding device for preventing pins from being broken;

FIG. 12 is a schematic perspective view of a second guide plate of a diode soldering apparatus for preventing pin breakage;

fig. 13 is a schematic perspective view of a fixing base in a diode welding device for preventing pins from breaking.

The reference numerals in the figures are:

1-a fixed seat;

11-a fixed assembly; 111-jacks; 112-a plug; 113-a trigger;

2-welding plates;

21-a mounting base;

22-sliding grooves;

23-a servo slipway;

3-a clamping mechanism;

31-a clamping assembly; 311-clamping plates;

32-a transmission assembly; 321-racks; 322-gear;

33-a first guide plate; 331-first guide grooves;

34-a second guide plate; 341-a second guide groove; 342-limiting plate; 343-an elastic member; 344-guide post;

35-a deviation rectifying component; 351-grooves; 352-clamping hole; 353-incline;

4-welding the assembly.

Detailed Description

The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.

As shown in fig. 1 to 13: the utility model provides a prevent diode welding equipment of pin rupture, includes the fixing base 1 that is used for carrying out the centre gripping to the diode, and the diode can rotate in fixing base 1, and fixing base 1's side is provided with along the gliding welded plate 2 of the extending direction of the pin of diode and sets up on welded plate 2 and is used for carrying out the fixture 3 of centre gripping to the pin, is provided with on the fixture 3 and carries out prosthetic correction subassembly 35 to the pin along with the centre gripping of fixture 3.

The welding component 4 is located the top of welding plate 2, place the diode level on fixing base 1, rethread fixing base 1 carries out the centre gripping to the diode, the work piece that will need to weld with the pin of diode is placed on welding plate 2 this moment, be provided with on the welding plate 2 and carry out the mount pad 21 that fixes to the work piece that needs to weld, slide to fixing base 1 through the extending direction of welding plate 2 along the diode this moment, welding plate 2 has driven fixture 3, make fixture 3 can remove the side of the pin of diode, make the pin on the diode only leave its part with the work piece welded, the work piece on the mount pad 21 is followed the removal of welding plate 2 and the pin butt joint of diode this moment, start fixture 3 carries out the centre gripping to the pin of diode this moment, protect the pin of diode through fixture 3, prevent its rupture, avoid the pin of diode to take place the displacement through fixture 3 secondary location simultaneously.

Its pin discovery slope at diode material loading's in-process, the pin that causes fixture 3 to diode easily is accurate when moving with the work piece butt joint, when diode is placed on fixing base 1, because the spacing to the diode is not, make the position of two pins be a height one by one setting, cause the inconvenient pin butt joint with the diode of work piece, make the unable welded problem of welding assembly 4, through the setting of rectifying assembly 35, make rectifying assembly 35 can repair the pin of diode along with fixture 3's centre gripping action, fixture 3 is convenient for carry out the centre gripping to the pin, the effect of direction also can be played to two pins of height one by one to the pin is also to the two pins of height when repairing, make the position of two pins be located same horizontal plane, diode can rotate in fixing base 1 along with the removal of pin this moment, fixing base 1's inside accessible sets up the bearing, make fixing base 1 can rotate when carrying out the centre gripping to the diode, can not cause the rupture because of the diode can't rotate when being convenient for the pin is adjusted, thereby make two pins of diode can dock with the work piece, the welding assembly 4 is convenient for welding the pin accurately, stability to the work piece is improved.

As shown in fig. 1 to 6: the welding plate 2 is provided with a chute 22 perpendicular to the extending direction of the pins, the clamping mechanism 3 is provided with clamping assemblies 31 which are the same as the pins in number and correspond to each other one by one, each clamping assembly 31 comprises two clamping plates 311, the two clamping plates 311 can slide on the chute 22, and a transmission assembly 32 which enables the two clamping plates 311 to slide relatively is arranged between the two clamping plates 311.

Through the setting of spout 22 for two grip blocks 311 of clamping assembly 31 can slide on spout 22, when the pin department of fixture 3 is removed to grip assembly 31, through driving one of them grip block 311 and remove, grip block 311 can drive assembly 32, make two grip blocks 311 be close to each other through drive assembly 32, carry out the centre gripping to the pin of diode through two grip blocks 311, the protection to the pin of diode has been realized, simultaneously after the welding is accomplished, keep away from each other through two grip blocks 311, be convenient for take out the diode from fixture 3, avoid the inconvenient problem of taking out the diode among the prior art.

As shown in fig. 3 and 7 to 10: the number of the rectifying components 35 is the same as that of the clamping components 31 and corresponds to one another, the rectifying components 35 comprise grooves 351 respectively positioned at the middle parts of the opposite sides of the two clamping plates 311, and after the grooves 351 between the two clamping plates 311 are closed, clamping holes 352 penetrating through the clamping components 31 are formed.

Through the setting of recess 351 for when two grip blocks 311 are close to each other, the inner wall of grip block 311 can contact with the pin of diode, because the diode can rotate in fixing base 1, make the removal of grip block 311 can drive the pin and slide on the inner wall of grip block 311, thereby drive the rotation of diode, until the pin of diode rotates to the recess 351 departments on grip block 311, carry out spacing to the pin of diode through recess 351 departments, the centre gripping hole 352 that folds the formation at last through two grip blocks 311 is to the pin of diode, make the pin of slope or two pins that are not located same horizontal plane are adjusted at gliding in-process, play and restore the pin and lead the effect to the pin, improve the pin and the accuracy of work piece butt joint.

As shown in fig. 7 to 10: the diameter of the holding hole 352 gradually decreases from its end near the fixing base 1 to its end far from the fixing base 1.

In the sliding process of the clamping mechanism 3 to the fixing base 1, the diameter of the clamping hole 352 is gradually reduced from one end, close to the fixing base 1, to one end, far away from the fixing base 1, of the clamping mechanism, the pin of the diode can be better inserted into the clamping hole 352 of the clamping assembly 31 through the larger end of the inner diameter of the clamping hole 352, meanwhile, the pin is guided through the gradually reduced diameter of the clamping mechanism, the inclined pin is repaired while the pin is guided, and the pin is clamped through the smaller end of the inner diameter of the clamping hole 352.

As shown in fig. 3, 8 and 9: the rectifying assembly 35 further includes inclined surfaces 353 on opposite sides of the two clamping plates 311, respectively, for guiding the pins to slide toward the grooves 351 of the clamping plates 311, and the inclined surfaces 353 on the two clamping plates 311 are matched with each other.

Through the setting of inclined plane 353 for the inside contact of pin and grip block 311 can be better to recess 351 department slip, be convenient for improve the effect of leading to the pin, simultaneously through the setting of the inclined plane 353 of two grip block 311 mutual matches, make two grip block 311 can accomplish the matching when being close to each other, do not influence the foling of its inside recess 351, the shaping of grip block of being convenient for.

As shown in fig. 6 and 8: the transmission assembly 32 comprises a gear 322 and two racks 321, the gear 322 can rotate and is positioned at the bottom of the welding plate 2, the gear 322 is positioned between the two clamping plates 311, the two racks 321 are respectively and fixedly connected to the bottoms of the two clamping plates 311, and the two racks 321 are both in meshed connection with the gear 322.

Through the setting of gear 322 and two racks 321 for can drive the removal of the rack 321 of its bottom through driving one of them grip block 311, can drive the rotation of gear 322 through the removal of rack 321, can drive the removal of another rack 321 through the rotation of gear 322, drive the grip block 311 of another side through this rack 321, make two grip blocks 311 can do relative motion, make things convenient for it to carry out the centre gripping to the pin of diode, thereby the convenience is taken out in the centre gripping subassembly 31 with the diode simultaneously when two grip blocks 311 loosen the centre gripping.

As shown in fig. 1, 2 and 11: the clamping mechanism 3 is further provided with first guide plates 33, the number of which is the same as that of the clamping assemblies 31, the first guide plates 33 are fixedly connected to the fixed seat 1, one side, close to the clamping plates 311, of each first guide plate 33 is provided with an inclined first guide groove 331, one clamping plate 311 of the clamping assemblies 31 is in sliding fit with the first guide groove 331, and when the welding plate 2 drives the clamping plates 311 to move towards the fixed seat 1, the first guide plates 33 can drive the clamping plates 311 in sliding fit with the welding plate 2 to move.

First embodiment: through the setting of first deflector 33 for welded plate 2 is when removing fixing base 1, drives the removal rather than sliding fit's grip block 311 through the first guide slot 331 of first deflector 33, and the removal of one of them grip block 311 can drive the removal of another grip block 311 through drive assembly 32, realizes two grip blocks 311 from this and carries out the centre gripping to the pin of diode, through the setting of first deflector 33, need not to set up extra drive source and just can drive the operation of grip block 31, reduces the input of cost.

As shown in fig. 1 to 4, 12 and 13: the clamping mechanism 3 is further provided with second guide plates 34 the same as the clamping assemblies 31 in number, the second guide plates 34 can be slidably positioned on the welding plates 2, the second guide plates 34 are elastically connected with the welding plates 2, the sliding directions of the second guide plates 34 and the clamping plates 311 are mutually perpendicular, one side, close to the clamping plates 311, of the second guide plates 34 is provided with inclined second guide grooves 341, one clamping plate 311 in the clamping assemblies 31 is slidably matched with the second guide grooves 341, and the fixing base 1 is provided with a fixing assembly 11 for fixing the second guide plates 34 and starting or closing the fixing assemblies through the abutting connection of the welding plates 2 and the fixing base 1.

Second embodiment: the bottom of the welding plate 2 is provided with guide posts 344 which are the same as the second guide plates 34 in number and correspond to each other one by one, the guide posts 344 are arranged in a horizontal state, the bottom of the second guide plates 34 is provided with limit plates 342, the guide posts 344 penetrate through the limit plates 342, the guide posts 344 are in sliding fit with the limit plates 342, elastic pieces 343 are further arranged between the guide posts 344 and the limit plates 342, two ends of each elastic piece 343 are fixedly connected with the limit plates 342 and the side walls of the welding plate 2 respectively, the second guide plates 34 and the welding plate 2 are enabled to be in elastic connection, when the welding plate 2 moves towards the fixed seat 1, the second guide plates 34 move along with the welding plate 2 due to the elastic connection of the second guide plates 34 and the welding plate 2, at the moment, the second guide plates 34 move along with the clamping mechanisms 3, the second guide grooves 341 of the second guide plates 34 cannot drive the clamping plates 311 to move, and after the welding plate 2 abuts against the fixed seat 1, at this time, the welding plate 2 starts the fixing assembly 11, the second guide plate 34 is fixed through the fixing assembly 11, at this time, the clamping mechanism 3 is driven to move to the side far away from the fixing seat 1 through the welding plate 2, because the second guide plate 34 is fixed, one clamping plate 311 is driven by the second guide groove 341 of the second guide plate 34 in the moving process of the welding plate 2, the clamping plate 311 drives the other clamping plate 311 through the transmission assembly 32, the pins are clamped through the relative movement of the two clamping plates, so that the pins and the workpieces are conveniently butted and welded, after welding, in order to loosen the clamping of the pins, the clamping plate 311 is driven to the side of the fixing seat 1 through the welding plate 2, so that the clamping of the pins is loosened by the two clamping plates 311, and the diode after welding is taken out, after the welding plate 2 is abutted against the fixing seat 1 for the second time, the fixing assembly 11 is closed, so that the second guide plate 34 cannot be connected with the fixing seat 1, and at the moment, the second guide plate 34 can be far away from the fixing seat 1 along with the resetting of the welding plate 2.

When a plurality of fixing bases 1 are arranged to connect and feed the diodes through a conveyor belt, the diodes cannot be fed to the welding plate 2 in the horizontal direction because the first guide plates 33 are fixedly connected with the fixing bases 1 when the first guide plates 33 in the first embodiment are used, pins of the diodes can be blocked by the first guide plates 33, so that the fixing bases 1 can only feed the diodes to the welding plate 2 from the vertical direction, and the feeding mode of a feeding mechanism is limited greatly; when the second guide plate 34 in the second embodiment is used, the second guide plate 34 is not connected with the fixing seat 1, so that the feeding mechanism can feed materials to the position of the welding plate 2 in any direction, and the adaptability of the device is improved.

As shown in fig. 1 to 4, 12 and 13: the fixing assembly 11 comprises an insertion hole 111 arranged on the fixing base 1, a plug 112 arranged on the second guide plate 34 and a trigger 113 for controlling the connection state of the insertion hole 111 and the plug 112, wherein the trigger 113 is positioned on one side of the fixing base 1 close to the welding plate 2.

After the welding plate 2 moves to be in butt joint with the fixing base 1, the plug connector 112 on the second guide plate 34 can be inserted into the jack 111 on the fixing base 1, at this time, the butt joint of the welding plate 2 and the fixing base 1 can start the trigger 113, the jack 111 and the plug connector 112 are fixedly connected through the trigger 113, the jack 111 can be provided with an electromagnetic block, the plug connector 112 is an iron block matched with the electromagnetic block, the trigger 113 is preferably a contact sensor, when the contact sensor senses that the welding plate 2 is in butt joint with the fixing base 1, an electric signal can be sent to a controller at the rear end, the electromagnetic block of the jack 111 is electrified through the controller, the electromagnetic block generates magnetic force to adsorb the plug connector 112 inserted into the jack 111, the second guide plate 34 is connected with the fixing base 1, when the welding plate 2 is in butt joint with the fixing base 1 for a second time, the electromagnetic block is in power failure to lose the magnetic force, the electromagnetic block can not adsorb the plug connector 112, the second guide plate 34 can move along with the welding plate 2, the plug connector 112 and the jack 111 can also be provided with an elastic buckle connection, the trigger 113 can be set to be in the same production cost as the connecting rod, and the same effect can be achieved when the connecting rod is driven.

As shown in fig. 1: the bottom of the welding plate 2 is provided with a servo slide 23 for driving it.

Realize the position drive of welding plate 2 through servo slip table 23 for the welding plate 2 can be more accurate removal, the convenience is to the control of welding plate 2.

The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The diode welding equipment for preventing the pins from being broken comprises a fixing seat (1) for clamping the diode, and the diode can rotate in the fixing seat (1), and is characterized in that a welding plate (2) sliding along the extending direction of the pins of the diode and a clamping mechanism (3) arranged on the welding plate (2) and used for clamping the pins are arranged at the side of the fixing seat (1), and a deviation rectifying assembly (35) for repairing the pins along with the clamping of the clamping mechanism (3) is arranged on the clamping mechanism (3);

the welding device is characterized in that sliding grooves (22) perpendicular to the extending direction of the pins are formed in the welding plate (2), clamping assemblies (31) which are the same as the pins in number and correspond to each other one by one are arranged on the clamping mechanism (3), each clamping assembly (31) comprises two clamping plates (311), the two clamping plates (311) can slide on the sliding grooves (22), and a transmission assembly (32) which enables the two clamping plates (311) to slide relatively is arranged between the two clamping plates;

the clamping mechanism is characterized in that second guide plates (34) with the same number as the clamping assemblies (31) are further arranged on the clamping mechanism (3), the second guide plates (34) can slide on the welding plates (2), the second guide plates (34) are elastically connected with the welding plates (2), the sliding directions of the second guide plates (34) and the clamping plates (311) are mutually perpendicular, inclined second guide grooves (341) are formed in one side, close to the clamping plates (311), of the second guide plates (34), one clamping plate (311) in the clamping assemblies (31) is in sliding fit with the second guide grooves (341), and fixing seats (1) are provided with fixing assemblies (11) for fixing the second guide plates (34) and starting or closing through the abutting connection of the welding plates (2) and the fixing seats (1).

2. The diode welding device for preventing pin breakage according to claim 1, wherein the number of rectifying assemblies (35) is the same as the number of the clamping assemblies (31) and corresponds to one, the rectifying assemblies (35) comprise grooves (351) respectively positioned at the middle parts of opposite sides of the two clamping plates (311), and the grooves (351) between the two clamping plates (311) form clamping holes (352) penetrating through the clamping assemblies (31) after being closed.

3. A diode welding device for preventing breakage of pins according to claim 2, characterized in that the diameter of the holding hole (352) is gradually smaller from its end close to the holder (1) to its end far from the holder (1).

4. A diode welding device for preventing breakage of pins according to claim 2, characterized in that the rectifying assembly (35) further comprises inclined surfaces (353) located on opposite sides of the two clamping plates (311) respectively for guiding the pins to slide towards the grooves (351) of the clamping plates (311), and the inclined surfaces (353) on the two clamping plates (311) are matched with each other.

5. The diode welding device for preventing pin breakage according to claim 1, wherein the transmission assembly (32) comprises a gear (322) and two racks (321), the gear (322) is rotatably positioned at the bottom of the welding plate (2), the gear (322) is positioned between the two clamping plates (311), the two racks (321) are respectively fixedly connected to the bottoms of the two clamping plates (311), and the two racks (321) are both in meshed connection with the gear (322).

6. A diode welding device for preventing breakage of pins according to claim 1, characterized in that the fixing assembly (11) comprises a jack (111) arranged on the fixing base (1), a plug (112) arranged on the second guide plate (34) and a trigger (113) for controlling the direct state of the jack (111) and the plug (112), wherein the trigger (113) is positioned on one side of the fixing base (1) close to the welding plate (2).

7. Diode soldering apparatus for preventing breakage of pins according to any of claims 1-6, characterized in that the bottom of the soldering plate (2) is provided with a servo ramp (23) for driving it.