Capacitor pin and lead welding machine

Abstract

The invention relates to the technical field of welding equipment, and discloses a capacitor pin and lead welding machine which comprises two wire pressing plates, a rotating assembly, a pin mounting assembly and a pin separating assembly. A pair of electrodes is arranged between the two wire pressing plates, a pair of wire separating needles is arranged between the two electrodes, and a wire feeder is arranged above the wire separating needles; the two branching needles are inserted into the pin lead in the state that the vertical plane where the connecting line of the two branching needles is located is parallel to the axial direction of the pin lead, then the branching needles rotate, the branching needles are opened and separated from the pin lead at the last stage of rotation so that a hole cavity allowing a welding wire to penetrate is formed in the pin lead, and the welding wire is inserted into the hole cavity which is being formed through the wire feeder; according to the utility model, the contact area between the welding material and the copper wires is increased, the number of the copper wires in contact with the welding material in the lead pins is increased, the amount of the welding material permeating into the gaps of the copper wires is increased, the connection strength between the welding material and the capacitor is increased, and the connection strength between the lead pins and the welding material is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to a capacitor pin lead welding machine. Background Art

[0002] The pin lead is generally composed of a copper wire group and an insulating material. The copper wire group exposed from the insulating material serves as the welded part. The welding and fixing of the copper wire group at the welding position of the capacitor are realized through the connection and fixing of the copper wire with the welding material and the connection and fixing of the welding material with the capacitor.

[0003] After welding, since mainly the outer copper wires of the copper wire group contact the welding material, and the melted and formed welding material covers the copper wires in an umbrella shape, a two-point contact is formed between the welding material and the capacitor. The welding material during the melting process is not easy to effectively penetrate into the gaps between the copper wires, and the number of copper wires in the copper wire group contacting the welding material is also not easy to meet the welding strength requirements, making it easy for the copper wire group to be pulled out from between the welding material and the capacitor under the action of external force, that is, the welding is prone to being not firm. To solve this problem, in the prior art, usually the copper wire group is flattened to increase the number of copper wires in contact with the welding material to enhance the welding firmness. However, the flattening method will make the copper wires more dense, making it more difficult for the melted welding material to penetrate into the copper wire gaps, and the improvement of the welding strength is limited. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a capacitor pin lead welding machine, which can effectively solve the problems put forward in the background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A capacitor pin lead welding machine includes two pressing plates; a pair of electrodes is arranged between the two pressing plates, a pair of wire dividing needles is arranged between the two electrodes, and a wire feeder is arranged above the wire dividing needles.

[0006] The two wire dividing needles are inserted into the pin lead in a state where the vertical plane where their connection line is located is parallel to the axial direction of the pin lead, then rotated, and opened and separated from the pin lead at the end of the rotation to form a cavity for the welding wire to penetrate on the pin lead, and the wire feeder inserts the welding wire into the cavity being formed.

[0007] Preferably, it further includes a rotating assembly, a needle mounting assembly, and a needle separating assembly; the needle mounting assembly is used to mount the wire dividing needles on the rotating output end of the rotating assembly and provide guidance for the opening and separation of the wire dividing needles from the pin lead, and the needle separating assembly is used to cooperate with the needle mounting assembly to open the two wire dividing needles.

[0008] Preferably, the rotating assembly includes a swivel sleeve capable of rotating and axially moving; the needle mounting assembly includes a follower block with one end axially inserted into the swivel sleeve and the other end rotatably mounted with a gear shaft. A rack is meshed on each side of the gear shaft. The rack is slidably connected to the follower block. A needle mounting block for mounting a wire separating needle is slidably mounted on each of the opposite ends of the two racks. The two needle mounting blocks extend into two guiding grooves on the follower block respectively.

[0009] Preferably, the minute hand assembly includes a lifting block, a cross and a lifting rail. The cross-section of the lifting block is in the shape of a right trapezoid, and the oblique line in the right trapezoid forms a "V" shape with the central axis of the swivel sleeve. The lifting rail is fixed on the outer circumferential surface of the swivel sleeve and has an inclined surface that forms an obtuse angle with the rotating direction of the swivel sleeve. The cross is fixedly connected to the lifting block and can cooperate with the inclined surface on the lifting rail; a driving column capable of cooperating with the inclined surface on the lifting block is fixed on one of the racks.

[0010] Preferably, the guiding grooves and the follower block are distributed in a "V" shape, and have a first inclined groove portion and a second inclined groove portion from near to far relative to the follower block. The inclination angle of the second inclined groove portion is greater than that of the first inclined groove portion; a torsion spring is installed between the gear shaft and the follower block.

[0011] Preferably, the lifting block is an arc-shaped block structure coaxial with the swivel sleeve, and the lifting block can axially move.

[0012] Preferably, the end faces of the two wire separating needles that are away from each other are in a "V" shape, and the end faces that are close to each other are also in a "V" shape.

[0013] Preferably, auxiliary blocks are fixed on the end faces of the two wire separating needles that are away from each other. The end of the auxiliary block away from the needle mounting block is flush with the end of the wire separating needle away from the needle mounting block. The end of the auxiliary block facing the needle mounting block is inclined away from the needle mounting block; in the direction of inserting the wire separating needle into the pin lead, the length of the auxiliary block is less than the diameter of the pin lead.

[0014] Preferably, perforations for the welding wire to pass through are provided in both the follower block and the gear shaft, and the diameter of the perforation is greater than the diameter of the welding wire.

[0015] Preferably, the pressure plate has a notch for the pin lead to pass through.

[0016] Compared with the prior art, the present invention provides a capacitor pin lead welding machine, having the following

[0017] Beneficial effects:

[0018] 1. Two pressure plates with notches press on the pin leads. While positioning the pin leads at the welding position on the capacitor, it avoids flattening the pin leads. Two wire separating needles form a cavity on the pin leads, and the welding wire is inserted into the hole cavity being formed, enabling the inner copper wire in the pin leads to contact the welding wire. Also, the molten welding wire can first fill the hole cavity, penetrate into the inner copper wire gaps, then cover the outer copper wire, and penetrate into the outer copper wire gaps. This increases the area on the welding material that can contact the copper wire, increases the number of copper wires in the lead pins that contact the welding material, and increases the amount of welding material that penetrates into the copper wire gaps, achieving an increase in the connection strength between the lead pins and the welding material.

[0019] 2. The welding material forms a three - point contact with the welding position on the capacitor, achieving an increase in the connection strength between the welding material and the capacitor. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the present invention;

[0021] Figure 2 It is a partial structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the cooperation between the electrode and the pressure plate;

[0023] Figure 4 It is a schematic structural diagram of the rotating assembly, the needle - loading assembly, and the wire - separating assembly;

[0024] Figure 5 It is an unfolded partial structural diagram of the needle - loading assembly;

[0025] Figure 6 It is a schematic diagram of the connection between the wire - separating needle and the auxiliary block;

[0026] Figure 7 It is a schematic diagram of the pin leads before and after the formation of the hole cavity;

[0027] Figure 8 It is a cross - sectional view when the welding material, the pin leads, and the capacitor are connected together in the present invention.

[0028] Wherein: 1. Welding table; 2. Tooling; 3. Column; 4. Lifting table; 41. Spring column; 42. Transmission frame; 5. Top plate; 51. Limiting frame; 6. Driving unit one; 7. Pressing plate; 8. Electrode; 9. Wire dividing needle; 91. Auxiliary block; 10. Wire feeder; 11. Rotating assembly; 12. Needle loading assembly; 13. Needle separating assembly; 71. Lifting groove; 72. Guide rod one; 73. Spring; 81. Driving unit two; 111. Central column; 112. Gear; 113. Rotary sleeve; 114. Driving unit three; 121. Follow-up block; 122. Gear shaft; 123. Rack; 124. Needle loading block; 125. Guide groove; 126. Cylinder; 127. Driving column; 128. Torsion spring; 131. Lifting block; 132. Cross; 133. Lifting rail; 134. Guide rod two. Specific embodiments

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 5 , a capacitor pin lead welding machine, including a welding table 1, a tooling 2 and a column 3 are fixedly connected to the top end of the welding table 1. The tooling 2 is used to position the capacitor and make the welding position on the capacitor face upward. There are two columns 3, and a top plate 5 is fixedly connected to the tops of the two columns 3. A driving unit one 6 for driving the lifting table 4 to slide is fixedly installed on the top plate 5.

[0031] Two inverted "L"-shaped transmission frames 42 are fixedly installed on the lifting table 4. A "C"-shaped limiting frame 51 is respectively fixed above the two transmission frames 42 on the top plate 5. A guide rod one 72 is respectively arranged on the two transmission frames 42. The guide rod one 72 is arranged vertically, and the top end of the guide rod one 72 penetrates and slidably connects the horizontal part of the transmission frame 42, the horizontal part below the limiting frame 51 and extends into the limiting frame 51. The bottom end of the guide rod one 72 is fixedly connected with a pressing plate 7. A limiting nut is screwed on the guide rod one 72 located in the limiting frame 51. A spring 73 is sleeved on the outer surface of the guide rod one 72 between the horizontal part of the transmission frame 42 and the pressing plate 7. A spring column 41 is embedded at the bottom end of the longitudinal part of the transmission frame 42. The moving end of the spring column 41 can be inserted into and removed from the top of the pressing plate 7. A lifting groove 71 capable of cooperating with the moving end of the spring column 41 is arranged in the middle of the pressing plate 7;

[0032] During the process of extending through the output end of the first driving unit 6 to drive the lifting table 4 to move downward, the spring column 41 embedded in the wire pressing plate 7 drives the wire pressing plate 7 to move downward until the lead pin is pressed against the capacitor by the wire pressing plate 7. At this time, the limit nut on the first guide rod 72 contacts the lower inner side of the limit frame 51. Then, the output end of the first driving unit 6 further extends, and the lifting table 4 further moves downward, compressing the spring 73, driving the movable end of the spring column 41 to disengage from the wire pressing plate 7 and move downward relative to the wire pressing plate 7 until the movable end of the spring column 41 extends into the lifting groove 71;

[0033] During the process of retracting through the output end of the first driving unit 6 to drive the lifting table 4 to move upward, the spring column 41 located in the lifting groove 71 drives the wire pressing plate 7 to move upward, causing the wire pressing plate 7 and the lifting table 4 to move upward synchronously until the top end of the first guide rod 72 contacts the upper inner side of the limit frame 51. Then, the output end of the first driving unit 6 further retracts, driving the lifting table 4 to further move upward, the spring 73 resets, and the movable end of the spring column 41 disengages from the lifting groove 71 and moves upward relative to the wire pressing plate 7 until one end of the spring column 41 is embedded in the top of the wire pressing plate 7 again.

[0034] Each wire pressing plate 7 is composed of two vertical parts and an inclined part, and the inclined part is located between the two vertical parts. The upper vertical part is fixedly connected to the first guide rod 72. The lower vertical part has a notch for the pin lead to pass through. The inclined parts of the two wire pressing plates 7 are distributed in a "V" shape; a pair of electrodes 8 are arranged between the two wire pressing plates 7. The two electrodes 8 are respectively parallel to the inner sides of the two inclined parts. A second driving unit 81 for driving the electrode 8 to move along the inclined part of the wire pressing plate 7 is fixed on each of the two wire pressing plates 7. The two electrodes 8 are respectively electrically connected to the two poles of the welding power supply;

[0035] After the wire pressing plate 7 contacts the capacitor, the two wire pressing plates 7 are respectively located on both sides of the welding position on the capacitor. The part of the pin lead for welding passes through the two notches and is cylindrical. Then, after the welding wire contacts the pin lead, the two second driving units 81 respectively drive the two electrodes 8 to move and contact the lead pin, energize the electrode 8, heat the lead pin and the welding wire, melt the welding wire, and perform welding.

[0036] A pair of wire dividing needles 9 are arranged between the two electrodes 8. The wire dividing needles 9 are used to divide the pin lead located between the two wire pressing plates 7 into two parts, that is, a cavity is formed on the pin lead located between the two wire pressing plates 7; this cavity is used for inserting the welding wire.

[0037] It should be noted that before and after the cavity is formed, the state of the pin lead is as Figure 7 shown. Figure 7 In the figure, the multiple lines at both ends of the arrow represent the multiple copper wires in the pin lead, and the round hole in the direction of the arrow represents the cavity.

[0038] In the above technical solution, both the driving unit I (6) and the driving unit II (81) can be driving devices that directly output linear motion, such as cylinders, hydraulic cylinders, or electric push rods in the prior art.

[0039] As a further illustration of the above technical solution, the capacitor pin lead welding machine further includes a wire feeder (10), a rotating assembly (11), a needle mounting assembly (12), and a needle separating assembly (13); the wire feeder 10 is used to convey welding wire, the needle mounting assembly (12) is used to mount the wire separating needle (9) on the rotating output end of the rotating assembly (11) and provide guidance for the opening and detachment of the wire separating needle (9) from the pin lead, and the needle separating assembly (13) is used to cooperate with the needle mounting assembly (12) to open the two wire separating needles (9). Specifically as follows:

[0040] The wire feeder 10 is arranged above the wire separating needle 9. The wire feeder 10 is a roller conveyor and is used to move the welding wire downward and insert it into the hole cavity; the top end of the frame of the wire feeder 10 is fixedly connected to the lifting table 4;

[0041] The rotating assembly 11 includes a central column 111 and a driving unit III (114). The top end of the central column 111 is fixedly connected to the bottom end of the frame of the wire feeder 10. A rotary sleeve 113 is rotatably sleeved on the outer circumferential surface of the central column 111. A circle of teeth is formed on the upper part of the outer circumferential surface of the rotary sleeve 113. The housing of the driving unit III (114) is fixed to the top end of the lifting table 4. The output end of the driving unit III (114) penetrates downward through the lifting table 4 and is fixedly sleeved with a gear 112. The gear 112 meshes with the teeth; by moving the lifting table 4 up and down, the wire feeder 10 and the rotating assembly 11 are moved up and down. By driving the gear 112 to rotate by the driving unit III (114), the teeth rotate, realizing the rotation of the rotary sleeve 113, so that the rotary sleeve 113 can rotate and move axially; the driving unit III (114) is a device in the prior art that can directly output rotational motion, such as a motor, a motor, or a rotary cylinder.

[0042] The needle loading assembly 12 includes a follower block 121. One end of the follower block 121 is axially embedded in the rotary sleeve 113 and moves together with the rotary sleeve 113. The other end of the follower block 121 faces downward and is rotatably installed with a gear shaft 122. The gear shaft 122 is arranged coaxially with the rotary sleeve 113. A rack 123 is meshed on each side of the gear shaft 122. The rack 123 is slidably connected to the follower block 121. Needle loading blocks 124 for installing wire separating needles 9 are slidably installed at opposite ends of the two racks 123 respectively. The needle loading blocks 124 slide axially along the rotary sleeve 113. Guide grooves 125 are respectively provided at opposite ends of the follower block 121. A cylinder 126 extends from each of the two needle loading blocks 124, and the two cylinders 126 respectively extend into the two guide grooves 125. Through the rotation and axial movement of the rotary sleeve 113, the rotation and axial movement of the needle loading assembly 12 and the two wire separating needles 9 are realized. Through the rotation of the gear shaft 122, the opening and closing of the two needle loading blocks 124 are realized, and further the opening and closing of the two wire separating needles 9 are realized.

[0043] As a further description of the needle loading assembly 12, the guide grooves 125 and the follower block 121 are distributed in a "V" shape, and have a first inclined groove portion and a second inclined groove portion from near to far relative to the follower block 121. The inclination angle of the second inclined groove portion is greater than that of the first inclined groove portion. The inclination angle of the first inclined groove portion is 10° to 20°, such as 10°, 15° and 20°, etc. The inclination angle of the second inclined groove portion is 50° to 70°, such as 50°, 60° and 70°, etc., so that during the opening process of the two needle loading blocks 124, the two cylinders 126 move away from each other, and first slowly move upward along the first inclined groove portion, and then quickly move upward along the second inclined groove portion, thereby driving the needle loading blocks 124 to first slide upward slowly on the racks 123 and then quickly slide upward, realizing the action that the two wire separating needles 9 first slowly move upward to separate from the pin leads and then quickly move upward to separate from the pin leads during the opening process. Through such a setting, during the process of forming a cavity by opening the two wire separating needles 9 in the pin leads, the welding wire can have enough time to be inserted into the cavity in the process, avoiding insertion failure.

[0044] A torsion spring 128 is installed between the gear shaft 122 and the follower block 121. During the movement of the two racks 123 to open the two wire separating needles 9, the torsion spring 128 undergoes elastic deformation, and the elastic potential energy of the torsion spring 128 is used to drive the two wire separating needles 9 to move closer and reset.

[0045] The minute hand assembly 13 includes a lifting block 131, a cross 132, a lifting rail 133 and a second guide rod 134;

[0046] Among them, the lifting block 131 is an arc-shaped block structure coaxial with the rotary sleeve 113. The cross-sectional shape of the lifting block 131 is a right trapezoid, and the oblique line in the right trapezoid forms a "V" shape with the central axis of the rotary sleeve 113;

[0047] The lifting rail 133 is fixed on the outer circumferential surface of the rotating sleeve 113 and has an inclined surface which is at an obtuse angle to the rotating direction of the rotating sleeve 113;

[0048] One end of the vertical portion of the cross 132 is fixedly connected to the top of the lifting block 131, and the other end of the vertical portion is coaxially inserted into the output end of the driving unit three 114. The cross 132 does not rotate with the rotation of the output end of the driving unit three 114, and can move axially relative to the output end of the driving unit three 114. The transverse portion of the cross 132 can cooperate with the inclined surface on the lifting rail 133.

[0049] The bottom end of the second guide rod 134 is fixed to the top end of the lifting block 131 , and the top end of the second guide rod 134 penetrates and is slidably connected to the lifting platform 4 ; an anti-drop nut is also screwed on the second guide rod 134 located above the lifting platform 4 .

[0050] When the lifting block 131 is only acted upon by its own gravity, the anti-dropping nut on the second guide rod 134 keeps in contact with the top surface of the lifting platform 4 .

[0051] Through the above arrangement, the two branching needles 9 that are closed together are inserted into the pin lead with the vertical plane of their connection line parallel to the axial direction of the pin lead. Then, the two branching needles 9 are rotated 90° so that the vertical plane of their connection line is rotated to be perpendicular to the axial direction of the pin lead.

[0052] During the hole formation process, the rotation process of the dividing line needle 9 is divided into the early stage of rotation, the middle stage of rotation and the final stage of rotation. In the early stage and the middle stage of rotation of the dividing line needle 9, the inclined surface on the lifting rail 133 is close to the lateral part of the cross 132. In the final stage of rotation of the dividing line needle 9, the inclined surface on the lifting rail 133 contacts the lateral part of the cross 132, and lifts the cross 132, so that the lifting block 131 moves axially upward, opens the dividing line needle 9 and detaches from the pin lead. The rotation angle when the inclined surface on the lifting rail 133 starts to contact the cross 132 is 70° to 80°, such as 70°, 75° and 80 degrees.

[0053] A driving column 127 is fixed on one of the racks 123 and can cooperate with the inclined surface on the lifting block 131. Specifically, when the inclined surface on the lifting rail 133 contacts the cross 132, the driving column 127 contacts the inclined surface of the lifting block 131, and pushes the rack 123 connected thereto to slide as the lifting block 131 moves upward, driving the gear shaft 122 to rotate, moving the two needle-loading blocks 124 away from each other, thereby opening the two branching needles 9 and disengaging the pin leads.

[0054] In the above technical solution, when the output end of the driving unit three 114 is reversed, the lifting rail 133 rotates and disengages from the horizontal part of the cross 132, the lifting block 131 moves axially downward, and the coil spring 128 drives the gear shaft 122 to rotate, bringing the two dividing needles 9 closer together.

[0055] It should be noted that in the above technical solution, through holes for the welding wire to pass through are provided in the center column 111, the follower block 121, and the gear shaft 122, and the diameter of the through holes is larger than the diameter of the welding wire.

[0056] It should be noted that the end faces of the two branching needles 9 that are far away from each other are in a "V" shape, and the end faces that are close to each other are in a "V" shape, so as to facilitate the insertion of the welding wire into the hole cavity between the two branching needles 9.

[0057] In the present invention, the branching needle 9 is installed on the rotating output end of the rotating component 11 through the needle assembly 12; after the branching needle 9 is inserted into the pin lead, the rotating component 11 drives the branching needle 9 to rotate, and in the rotation process, cooperates with the branching needle assembly 13 and the needle assembly 12 to drive the two branching needles 9 to open and detach from the pin lead, so as to form a hole cavity on the pin lead for the welding wire to penetrate, and the wire feeder 10 inserts the welding wire into the hole cavity being formed, so that during welding, the molten welding wire first fills the hole cavity and penetrates into the gap between the inner copper wires, and then covers the outer copper wires and penetrates into the gap between the outer copper wires, and the welding material forms a three-point contact with the welding position on the capacitor, such as Figure 8 As shown, this increases the area on the welding material that can contact the copper wire, increases the number of copper wires in contact with the welding material in the lead pins, and increases the amount of welding material that penetrates into the gaps between the copper wires, thereby increasing the connection strength between the lead pins and the welding material. At the same time, it increases the connection strength between the welding material and the capacitor, and also makes the lead pins exposed by the welding material remain close to a cylindrical shape, which is aesthetically pleasing.

[0058] It should be noted that in Figure 8 In the figure, the shaded part of the rectangular frame represents the capacitor, the two black circles represent the two copper wires on both sides of the cavity, and the shaded area of the lines covering the two black circles represents the welding material.

[0059] As a further explanation of the above technical solution, Figure 6 As shown, auxiliary blocks 91 are fixed to the end faces of the two wire-dividing needles 9 that are away from each other. The end of the auxiliary block 91 away from the needle-loading block 124 is flush with the end of the wire-dividing needle 9 away from the needle-loading block 124, and the auxiliary block 91 is inclined toward the end of the needle-loading block 124 away from the needle-loading block 124; in the direction in which the wire-dividing needle 9 is inserted into the pin lead, the length of the auxiliary block 91 is smaller than the diameter of the pin lead. By setting the auxiliary block 91, in the process of the wire-dividing needle 9 moving up and away from the lead pin, the auxiliary block 91 can move the lead pin copper wires on both sides of the wire-dividing needle 9, increase the gap between the copper wires around the cavity, so that the molten welding wire can better penetrate into the inner copper wire gap, and further increase the welding strength.

[0060] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A capacitor pin lead soldering machine, characterized in that: It includes two wire pressing plates (7); a pair of electrodes (8) are arranged between the two wire pressing plates (7), a pair of wire splitting needles (9) are arranged between the two electrodes (8), and a wire feeder (10) is arranged above the wire splitting needles (9); The two wire splitting needles (9) are inserted into the pin lead in a state where the vertical plane where their connection line is located is parallel to the axial direction of the pin lead, then rotated, and opened and separated from the pin lead at the end of the rotation to form a cavity for the welding wire to penetrate on the pin lead, and the wire feeder (10) inserts the welding wire into the cavity being formed.

2. The capacitor pin lead soldering machine according to claim 1, wherein: It further includes a rotating assembly (11), a needle mounting assembly (12) and a needle separating assembly (13); the needle mounting assembly (12) is used to mount the wire splitting needles (9) on the rotating output end of the rotating assembly (11) and provide guidance for the opening and separation of the wire splitting needles (9) from the pin lead, and the needle separating assembly (13) is used to cooperate with the needle mounting assembly (12) to open the two wire splitting needles (9).

3. A capacitor pin lead soldering machine according to claim 2, characterized in that: The rotating assembly (11) includes a rotating sleeve (113) that can rotate and move axially; the needle mounting assembly (12) includes a follower block (121) with one end axially embedded in the rotating sleeve (113) and the other end rotatably mounted with a gear shaft (122). A rack (123) is meshed on each side of the gear shaft (122). The rack (123) is slidably connected to the follower block (121). A needle mounting block (124) for mounting the wire splitting needle (9) is slidably mounted at each of the opposite ends of the two racks (123). The two needle mounting blocks (124) respectively extend into two guiding grooves (125) on the follower block (121).

4. The capacitor pin lead soldering machine according to claim 3, characterized in that: The needle separating assembly (13) includes a lifting block (131), a cross (132) and a lifting rail (133). The cross-section of the lifting block (131) is in the shape of a right trapezoid, and the oblique line in the right trapezoid forms a "V" shape with the central axis of the rotating sleeve (113). The lifting rail (133) is fixed on the outer circumferential surface of the rotating sleeve (113) and has an inclined surface that forms an obtuse angle with the rotating direction of the rotating sleeve (113). The cross (132) is fixedly connected to the lifting block (131) and can cooperate with the inclined surface on the lifting rail (133); a driving column (127) that can cooperate with the inclined surface on the lifting block (131) is fixed on one of the racks (123).

5. A capacitor pin lead soldering machine according to claim 4, characterized in that: The guiding grooves (125) are distributed in a "V" shape with respect to the follower block (121), and have a first inclined groove portion and a second inclined groove portion from near to far with respect to the follower block (121). The inclination angle of the second inclined groove portion is greater than that of the first inclined groove portion; a coil spring (128) is installed between the gear shaft (122) and the follower block (121).

6. The capacitor pin lead soldering machine according to claim 5, characterized in that: The lifting block (131) is an arc-shaped block structure coaxial with the rotating sleeve (113), and the lifting block (131) can move axially.

7. A capacitor pin lead soldering machine according to claim 6, characterized in that: The end faces of the two wire splitting needles (9) that are far away from each other are in a "V" shape, and the end faces that are close to each other are also in a "V" shape.

8. A capacitor pin lead soldering machine according to claim 7, characterized in that: Auxiliary blocks (91) are respectively fixed on the end faces of the two wire dividing needles (9) that are far away from each other. One end of the auxiliary block (91) that is far away from the needle mounting block (124) is flush with one end of the wire dividing needle (9) that is far away from the needle mounting block (124). One end of the auxiliary block (91) facing the needle mounting block (124) is inclined to the side far away from the needle mounting block (124); in the direction of the wire dividing needle (9) inserting into the pin lead, the length of the auxiliary block (91) is smaller than the diameter of the pin lead.

9. The capacitor pin lead soldering machine according to claim 8, wherein: Perforations for the welding wire to pass through are provided inside the follower block (121) and inside the gear shaft (122), and the diameter of the perforations is larger than the diameter of the welding wire.

10. A capacitor pin lead soldering machine according to claim 1, characterized in that: The wire pressing plate (7) has a notch for the pin lead to pass through.

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