Positioning pin shaft piece assembling and welding equipment

Abstract

The invention relates to the technical field of pin shaft part welding, and discloses positioning pin shaft part assembling and welding equipment which comprises a base plate and further comprises an upper rotating disc which is installed at the top of the base plate and can rotate intermittently, and multiple sets of edge grooves distributed annularly are formed in the edge position of the upper rotating disc. A positioning piece for vertically clamping and positioning the positioning pin is arranged in each group of edge grooves; the lug sheet groove is formed above the edge groove and can be used for embedding and limiting the lug sheet, and the lug sheet groove can enable the position of the hole in the lug sheet and the positioning pin below to be kept in a coaxial state; and the corresponding positions of the upper rotating disc are respectively set as an assembling area and a welding area by taking the chassis as a reference. The equipment integrates the functions of positioning, assembling and welding, reduces the previous assembling procedure, improves the production efficiency, reduces the manual error, improves the assembling precision and the welding quality, and is suitable for efficient and automatic production of the pin shaft and the lug piece.

Description

Technical Field

[0001] The present invention relates to the technical field of pin welding, and specifically to an assembly and welding device for positioning pin parts. Background Art

[0002] Pins are key connecting parts in the fields of mechanical manufacturing and automotive parts manufacturing. They often need to be welded after being matched with lugs to form a stable connection structure. The traditional welding process for pins and lugs usually involves separately manufacturing the two first, then assembling the lugs and pins, and then fixing them with jigs and welding.

[0003] For example, a movable pin welding tooling disclosed in a Chinese patent with the authorization announcement number CN118635776B drives a platform to rotate through a driving mechanism, so that multiple workpiece placement areas sequentially pass through the welding area for welding. During this process, when the workpiece located in the welding area is being welded, the operator can take or place pins in other workpiece placement areas, take out the welded finished products, and install new pins and lugs, and use the welding time period to replace workpieces, saving waiting time after welding, thereby realizing continuous production and effectively improving the welding efficiency of batch production of pins and lugs.

[0004] However, although this device can achieve continuous welding processing, since the pins and lugs still need to be assembled before welding, this leads to an additional assembly process in welding, and then the assembled positioning pins and lugs are welded through the above-mentioned welding tooling. This not only makes the process cumbersome, but also increases the labor cost, and also affects the working efficiency during batch welding. Summary of the Invention

[0005] The purpose of the present invention is to provide an assembly and welding device for positioning pin parts to solve at least one of the technical problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An assembly and welding device for positioning pin parts, including a chassis, and further including:

[0007] An upper rotating disk installed on the top of the chassis and capable of intermittent rotation. A plurality of groups of edge grooves distributed in a ring shape are provided at the edge position of the upper rotating disk, and a positioning member for vertically clamping and positioning the positioning pin is provided in each group of edge grooves;

[0008] An earpiece groove opened above the edge groove and capable of embedding and limiting the earpiece, and the earpiece groove can make the position of the hole on the earpiece coaxial with the positioning pin below;

[0009] Taking the chassis as a reference, the corresponding positions of the upper rotating disc are respectively set as an assembly area and a welding area. Below the side groove located in the assembly area, there is an ejection part, and above it, there is a limit piece. The ejection part can push up the positioning pin and insert it into the hole of the ear piece to complete the assembly. In the welding area, there is also a welding component installed on the chassis.

[0010] Optionally, the top of the chassis is also fixed with an upper fixed disc and a lower fixed disc through a support rod. The center of the upper fixed disc is rotatably installed with a central shaft passing through it. The top end of the central shaft is fixedly connected to the center of the upper rotating disc. The bottom end of the central shaft is also fixed with a lower rotating disc rotatably installed on the inner wall of the lower fixed disc. Between the chassis and the lower rotating disc, there is also a driving part for driving the intermittent rotation of the lower rotating disc.

[0011] Optionally, the driving part includes a plurality of convex pins annularly distributed and fixed at the bottom of the lower rotating disc, and also includes a slide bar slidably installed on the top of the chassis. A swing rod is rotatably installed on the outer wall of the slide bar. The top of the chassis is installed with a driving shaft driven by a motor. A driving rod is fixed on the outer wall of the driving shaft. One end of the driving rod is rotatably connected to the middle position of the swing rod. The end of the swing rod away from the slide bar is set as a fork, and the fork can make the convex pin embed and drive its rotation.

[0012] Optionally, the positioning part includes an installation groove opened in the upper rotating disc and communicating with the side groove. A slider is slidably installed on the inner wall of the installation groove in a limited way, and a spring is connected between the slider and the inner wall of the installation groove. A pull rod is slidably installed through the inside of the slider, and one end of the pull rod penetrates into the upper rotating disc from the inside and extends into the groove at the center of the upper rotating disc. The end of the pull rod penetrating into the side groove is rotatably installed with two semi-circular plates, and the two semi-circular plates can form a complete ring. Connecting rods are rotatably connected between the slider and the two semi-circular plates respectively, and a clamping convex is also fixed on the outer wall of the pull rod between the slider and the semi-circular plate;

[0013] On the top of the upper fixed disc, there is also an integrally formed connecting disc extending into the groove below the upper rotating disc, and a cam groove is opened on the top surface of the connecting disc. The end of the pull rod extending into the groove is fixed with a pin shaft slidably installed in the cam groove.

[0014] Optionally, a plurality of clamping rods arranged in the radial direction are slidably installed on the inner wall of the semi-circular plate. Clamping wheels are rotatably installed at the ends of the clamping rods. An arc-shaped groove is opened on the arc-shaped outer wall of the semi-circular plate, and an adjusting ring plate is slidably installed in the arc-shaped groove. An arc groove is opened on the outer wall of the adjusting ring plate. Fixed pins slidably installed in the arc groove are fixed on the outer wall of the clamping rod, and the two ends of the connecting rod are respectively rotatably installed on the slider and the adjusting ring plate.

[0015] Optionally, the ejection part includes a through hole formed through the top of the edge of the upper fixed disk, and a lifting rod capable of intermittently jacking up vertically is installed in the through hole. A compression spring applying a downward acting force to the lifting rod is also installed between the lifting rod and the inner wall of the through hole. A cushion ring is further fixed on the top of the upper fixed disk, and the cushion ring is set as a first step in the corresponding assembly area and a second step in the corresponding welding area, and the height of the second step is higher than that of the first step.

[0016] Optionally, a through hole is also formed through the lower fixed disk corresponding to the top of the lifting rod, and a top rod is slidably installed in the through hole. A connecting rod is rotatably installed between the bottom end of the top rod and the slide bar.

[0017] Optionally, the limiting piece is L-shaped and is fixed on the arc-shaped side wall of the upper fixed disk. The top surface of the limiting piece is in contact with and flush with the top surface of the upper rotating disk.

[0018] Optionally, a limiting groove is formed in the inner wall of the installation groove, and a limiting block slidably installed in the limiting groove is fixed on the outer wall of the slider.

[0019] Optionally, with the chassis as a reference, a feeding area and a discharging area are further provided at the corresponding position of the upper rotating disk. A receiving plate fixed on the top of the chassis is provided in the discharging area, and a feeding channel fixed on the top of the chassis is further provided in the feeding area.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] First, by integrating the positioning, assembly, and welding functions into one, the present invention eliminates the previous assembly process, directly completes the assembly and welding on the welding fixture, reduces the production steps, improves the production efficiency, and through the intermittent rotation of the upper rotating disk, realizes the automatic conveying of the positioning pins and lugs, reduces the waiting time in the intermediate links, makes the production process smoother, and with the reasonable layout of the assembly area and the welding area, realizes the efficient connection of the assembly and welding processes, and improves the overall operation efficiency of the equipment.

[0022] Second, the present invention can accurately vertically clamp and position the positioning pins through the positioning parts to keep them in a vertical state. At the same time, the shape of the lug groove is the same as that of the lug and the depth is the same as the thickness of the lug, ensuring that the holes on the lug are coaxial with the positioning pins after the lug is embedded, effectively reducing the coaxiality error after the assembly of the positioning pins and lugs, guaranteeing the product quality after welding, and splitting the assembly process into two steps, which can not only perform the preliminary positioning of the positioning pins and lugs, but also ensure the accuracy of coaxiality in the subsequent assembly process, further improving the quality of the positioning pin shaft parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1Top view of the present invention;

[0024] Figure 2 Schematic three-dimensional structure diagram of the present invention;

[0025] Figure 3 Front view of the present invention;

[0026] Figure 4 For the present invention Figure 3 Cross-sectional view along A-A and partial view in the present invention;

[0027] Figure 5 For the present invention Figure 4 Cross-sectional view along B-B in the present invention;

[0028] Figure 6 For the present invention Figure 4 Cross-sectional view along C-C in the present invention;

[0029] Figure 7 State diagram when the pull rod of the present invention moves outwards;

[0030] Figure 8 Schematic state diagram of the semi-circular ring plate of the present invention in an open state;

[0031] Figure 9 For the present invention Figure 4 Schematic cross-sectional three-dimensional structure diagram and partial view from the reverse perspective in the present invention;

[0032] Figure 10 Enlarged three-dimensional view of the spacer ring of the present invention;

[0033] Figure 11 Exploded three-dimensional view of the positioning member of the present invention;

[0034] Figure 12 Schematic diagram after assembly of the fixed pin shaft member of the present invention.

[0035] In the figure: 1, chassis; 2, upper rotating disc; 3, earpiece groove; 4, welding assembly; 5, lower fixed disc; 6, upper fixed disc; 7, side groove; 8, limiting piece; 9, connecting disc; 10, lower rotating disc; 11, central shaft; 12, lifting rod; 13, ejector rod; 14, pull rod; 15, installation groove; 16, slider; 17, spring; 18, clamping projection; 19, connecting rod; 20, cam groove; 21, semi-circular ring plate; 22, adjusting ring plate; 23, clamping rod; 24, clamping wheel; 25, spacer ring; 251, first step; 252, second step; 26, fixed pin; 27, arc groove; 28, driving rod; 29, convex pin; 30, slide bar; 31, connecting rod; 32, swing rod; 33, driving shaft; 34, receiving plate; 35, feeding channel. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 belong to the scope of protection of the present invention.

[0037] Please refer to Figures 1 to 12 , the present invention provides a technical solution: a positioning pin assembly welding device, including a chassis 1, and further including:

[0038] An upper rotating disk 2 installed on the top of the chassis 1 and capable of intermittent rotation. A plurality of sets of edge grooves 7 distributed in a ring shape are provided at the edge position of the upper rotating disk 2, and a positioning member for vertically clamping and positioning the positioning pin is provided in each set of edge grooves 7;

[0039] An earpiece groove 3 opened above the edge groove 7 and capable of embedding and limiting the earpiece, and the earpiece groove 3 can make the position of the upper hole of the earpiece coaxial with the positioning pin below;

[0040] Taking the chassis 1 as a reference, the corresponding positions of the upper rotating disk 2 are respectively set as an assembly area and a welding area. A jacking part is provided below the edge groove 7 in the assembly area, and a limiting piece 8 is provided above it. The jacking part can jack up the positioning pin and insert it into the hole of the earpiece to complete the assembly. A welding assembly 4 installed on the chassis 1 is also provided in the welding area.

[0041] When the welding device is in use, the operator places the positioning pins in each edge groove 7, and clamps and positions the positioning pins through the positioning members therein to keep them in a vertical state. At the same time, the earpieces are also embedded in the earpiece grooves 3. As Figure 2 shown, the shape of the earpiece groove 3 is the same as that of the earpiece, and the depth is also the same as the thickness of the earpiece. In this way, the earpiece can maintain a positioning effect after being embedded, and the hole on the earpiece is coaxial with the positioning pin. In this way, in the subsequent assembly process, the coaxiality after the assembly of the positioning pin and the earpiece can be minimized to ensure the quality of the welded product. At the same time, it can also avoid the uneven mechanical stress on the local position of the earpiece caused by the offset when the positioning pin is inserted into the hole of the earpiece, thereby avoiding deformation, and further improving the quality of the product;

[0042] Secondly, after the positioning pins and lugs are both loaded, driven by the external structure, the upper rotating disc 2 rotates intermittently and turns the positioning pins and lugs to the assembly area. In the assembly area, the lug groove 3 rotates to the lower part of the limiting piece 8 to play a limiting role. At the same time, the ejecting part under the side groove 7 drives the positioning pin to move upward until it is inserted into the hole on the lug to complete the assembly process. Subsequently, the upper rotating disc 2 turns the assembled positioning pin shaft parts to the welding area, and the welding assembly 4 is used to perform the final welding process on them. The welding assembly 4 can adopt the existing arc welding method, such as using a welding robot for operation, which can effectively improve the welding efficiency and the stability of welding quality.

[0043] Finally, the operator can remove the welded positioning pin shaft parts, and then repeat the above process;

[0044] It is worth mentioning that by integrating the functions of positioning, assembly and welding, the previous assembly processes are reduced, and the assembly and welding are directly completed on the welding fixture, which improves the production efficiency. Moreover, the positioning parts ensure the precise fit and positioning of the pin shaft and the lug, reduce the errors caused by manual operation, and improve the assembly accuracy.

[0045] In one optional embodiment, an implementation manner of installing the upper rotating disc 2 is provided;

[0046] On the top of the chassis 1, an upper fixed disc 6 and a lower fixed disc 5 are also fixed through support rods. The center of the upper fixed disc 6 is rotatably installed through a central shaft 11. The top end of the central shaft 11 is fixedly connected to the center of the upper rotating disc 2. The bottom end of the central shaft 11 is also fixedly installed with a lower rotating disc 10 that rotates on the inner wall of the lower fixed disc 5. A driving member for driving the lower rotating disc 10 to rotate intermittently is also installed between the chassis 1 and the lower rotating disc 10.

[0047] Specifically, refer to Figure 4 , the upper fixed disc 6 and the lower fixed disc 5 act as mounting brackets, and the central shaft 11 can coaxially connect the upper rotating disc 2 and the lower rotating disc 10. Therefore, when the driving member drives the lower rotating disc 10 to rotate intermittently, the upper rotating disc 2 can be driven to rotate intermittently, so as to achieve the above-mentioned purpose of automatically transporting the positioning pins and lugs.

[0048] In one optional embodiment, an implementation manner of the driving member is provided;

[0049] The driving member includes a plurality of convex pins 29 fixedly distributed in a ring shape at the bottom of the lower rotating disk 10, and further includes a slide bar 30 slidably mounted on the top of the chassis 1. A swing rod 32 is rotatably mounted on the outer wall of the slide bar 30. A driving shaft 33 driven by a motor is mounted on the top of the chassis 1. A driving rod 28 is fixed to the outer wall of the driving shaft 33. One end of the driving rod 28 is rotatably connected to the middle position of the swing rod 32. The end of the swing rod 32 away from the slide bar 30 is provided as a fork, and the fork can embed the convex pin 29 and drive it to rotate.

[0050] Specifically, reference can be made to Figure 4 and Figure 6 Through the crank-slider structure jointly composed of the driving shaft 33, the slide bar 30 and the swing rod 32, first, the motor drives the driving shaft 33 to rotate. The motor can be installed at the bottom of the chassis 1. When the driving shaft 33 rotates, it will drive the swing rod 32 to swing, and at the same time, the slide bar 30 will also reciprocate.

[0051] During the swinging process of the swing rod 32, the fork at its end will insert the convex pin 29 and drive it to rotate as the swing rod 32 swings until the fork disengages from the convex pin 29. In this way, by continuously swinging the swing rod 32, the purpose of driving the intermittent rotation of the lower rotating disk 10 and the upper rotating disk 2 can be achieved, and then the above-mentioned automatic feeding function can be achieved.

[0052] In one optional embodiment, an implementation manner of a positioning member is provided;

[0053] The positioning member includes a mounting groove 15 opened in the upper rotating disk 2 and communicating with the side groove 7. A slider 16 is slidably mounted on the inner wall of the mounting groove 15 in a limited manner, and a spring 17 is connected between the slider 16 and the inner wall of the mounting groove 15. A pull rod 14 is slidably mounted through the inside of the slider 16, and one end of the pull rod 14 penetrates into the upper rotating disk 2 from the inside and extends into the groove at the center of the upper rotating disk 2. Two half-ring plates 21 are rotatably mounted at the end of the pull rod 14 penetrating into the side groove 7, and the two half-ring plates 21 can form a complete ring. Link rods 19 are rotatably connected between the slider 16 and the two half-ring plates 21, and a clamping projection 18 is further fixed to the outer wall of the pull rod 14 located between the slider 16 and the half-ring plate 21;

[0054] A connecting disk 9 integrally formed on the top of the upper fixed disk 6 extends into the groove below the upper rotating disk 2, and a cam groove 20 is opened on the top surface of the connecting disk 9. A pin shaft slidably mounted in the cam groove 20 is fixed to the end of the pull rod 14 extending into the groove.

[0055] A plurality of clamping rods 23 arranged in the radial direction are slidably mounted on the inner wall of the semi-circular plate 21. A clamping wheel 24 is rotatably mounted at the end of the clamping rod 23. An arc-shaped groove is formed in the arc-shaped outer wall of the semi-circular plate 21, and an adjusting ring plate 22 is slidably mounted in the arc-shaped groove. An arc-shaped groove 27 is formed in the outer wall of the adjusting ring plate 22. A fixing pin 26 slidably mounted in the arc-shaped groove 27 is fixed to the outer wall of the clamping rod 23. Both ends of the connecting rod 19 are respectively rotatably mounted on the slider 16 and the adjusting ring plate 22.

[0056] Specifically, refer to Figure 4 and Figure 5 . During the rotation of the upper rotating disk 2, it will form a relative rotation with the upper fixed disk 6, and the pin shaft on the pull rod 14 will slide in the cam groove 20. Refer to Figure 5 . The cam groove 20 is divided into an inner groove with a smaller diameter and a curved groove with a larger diameter, and the two are smoothly transitioned. In this way, under the action of the pin shaft, the pull rod 14 will drive the pull rod 14 to perform centrifugal or centripetal sliding when transitioning between the inner groove and the curved groove, so as to change the different usage states of the positioning member. The specific method is as follows:

[0057] When the pull rod 14 performs centripetal sliding, that is, the pull rod 14 will first pull the semi-circular plate 21 and the adjusting ring plate 22 to move together. Under the action of the connecting rod 19, the two adjusting ring plates 22 will rotate and close, that is, from Figure 8 state to Figure 7 state, so as to close the positioning pin in the semi-circular plate 21 to perform a preliminary positioning function. Then, as the pull rod 14 continues to perform centripetal sliding, at this time, due to the elastic force of the spring 17 on the slider 16, the slider 16 and the connecting rod 19 will apply an outward acting force to the adjusting ring plate 22, so that the adjusting ring plate 22 slides in the arc-shaped groove of the semi-circular plate 21. During the sliding process, using the sliding fit between the fixing pin 26 and the arc-shaped groove 27, the clamping rod 23 will be driven to slide centripetally along the radius direction of the semi-circular plate 21 until the clamping wheel 24 contacts and clamps the positioning pin. In this way, through the centering and clamping of the positioning pin by a plurality of clamping rods 23, a further centering and clamping process of the positioning pin is achieved, thus preparing for the subsequent assembly;

[0058] Then, as the pull rod 14 continues to perform centripetal sliding, the clamping protrusion 18 contacts the slider 16. At this time, the pull rod 14 can slide the whole structure in the side groove 7 together until the pin shaft on the pull rod 14 slides and transitions to the inner groove with a smaller diameter. In this way, when the pin shaft slides in the inner groove, the corresponding pull rod 14 can play a continuous clamping and positioning role for the pin shaft, and at the same time can convey it to facilitate its assembly;

[0059] In summary, in the above process, it mainly aims at the processes of the positioning pin during assembly and welding. Therefore, the inner groove part of the cam groove 20 corresponds to the assembly area and the welding area;

[0060] On the contrary, when the pin shaft on the pull rod 14 transitions from the inner groove to the outer groove, the pull rod 14 moves centrifugally at this time, and at the same time, the two semi-ring plates 21 rotate and open, so that the already welded positioning pin shaft part can be removed, or the positioning pin to be processed can be placed. Therefore, the outer groove part of the cam groove 20 corresponds to the two areas of loading and unloading;

[0061] That is, with the chassis 1 as a reference, the corresponding position of the upper rotating disk 2 is also provided with a feeding area and a discharging area. A receiving plate 34 fixed to the top of the chassis 1 is provided in the discharging area, and a feeding channel 35 fixed to the top of the chassis 1 is also provided in the feeding area.

[0062] And it is worth mentioning that the positioning pin is centered by the clamping wheel 24 in the vertical direction. In this way, not only can it maintain a vertically centered state, but also the positioning pin is allowed to move along the axis under the state of vertical limit, which provides convenience for subsequent assembly.

[0063] In one optional embodiment, an implementation manner of the ejecting part is provided;

[0064] The ejecting part includes a through hole penetrating through the top edge of the upper fixed disk 6, and a lifting rod 12 that can intermittently jack up vertically is installed in the through hole. A compression spring that applies a downward acting force to the lifting rod 12 is also installed between the inner wall of the through hole and the lifting rod 12. A cushion ring 25 is fixed to the top of the upper fixed disk 6, and the cushion ring 25 is provided with a first step 251 corresponding to the assembly area and a second step 252 corresponding to the welding area, and the height of the second step 252 is higher than that of the first step 251.

[0065] Specifically, refer to Figure 4 and Figure 10 , after the above positioning part centers the positioning pin, when it rotates with the upper rotating disk 2, the bottom end of the positioning pin will slide on the top of the upper fixed disk 6, and there will be a certain gap between the positioning pin and the ear piece at this time. Therefore, when the bottom end of the positioning pin slides to the first step 251 of the cushion ring 25, the positioning pins will slide relative to each other under the elevation of the first step 251, and the top part of the positioning pins will be inserted into the holes of the ear pieces. Refer to Figure 12 , generally, a chamfer is provided at the end of the positioning pin. Therefore, when the chamfered part at the top of the positioning pin is inserted into the hole on the ear piece, it can play a certain positioning and correction role to further reduce the offset between the positioning pin and the hole on the ear piece;

[0066] In this way, by splitting the assembly process into two steps, not only can the positioning pin and the ear piece be initially positioned, but also the coaxial accuracy can be ensured in the subsequent assembly process, further improving the quality of the positioning pin shaft part.

[0067] Subsequently, when the positioning pin moves to the position of the lifting rod 12, i.e., the assembly area, as Figure 4 shown, the lifting rod 12 is vertically pushed upward by the drive of the external structure, pushing the positioning pin upward and inserting it into the hole on the lug, completing the assembly process. Then, as the upper rotating disc 2 continues to rotate, the bottom end of the assembled positioning pin shaft member will come into contact with the second step 252 again, and under the elevation effect of the second step 252, it will move upward again. At this time, the upward movement of the positioning pin can push the lug out of the lug groove 3. On the one hand, this facilitates the welding operation of the welding assembly 4 in the welding area, and on the other hand, it also prepares for subsequent detachment. When the welding is completed and it rotates to the discharging area, it can be detached from the side groove 7 under the pushing action of the pull rod 14, completing the discharging process;

[0068] In one alternative embodiment, an implementation method for driving the intermittent upward movement of the lifting rod 12 is provided;

[0069] The lower fixed disc 5 is also provided with a through hole corresponding to the top of the lifting rod 12, and a top rod 13 is slidably installed in the through hole. A connecting rod 31 is rotatably installed between the bottom end of the top rod 13 and the slide bar 30.

[0070] Specifically, reference can be made to Figure 4 and Figure 6 , from the above content, it can be seen that during the rotation of the driving rod 28 driving the swing rod 32 to swing, the slide bar 30 will also be driven to reciprocate. When the fork of the swing rod 32 contacts the convex pin 29, at this time, the slide bar 30 drives the lifting rod 12 to move downward through the connecting rod 31;

[0071] When the fork of the swing rod 32 continues to rotate after disengaging from the convex pin 29, the upper rotating disc 2 is in a stationary state. At this time, the slide bar 30 drives the top rod 13 to move upward through the connecting rod 31 until it contacts the lifting rod 12 and drives it to move upward to complete the process of pushing the positioning pin upward for assembly. In this way, the intermittent rotation conveying and the assembly process can be alternately carried out, further improving the working efficiency.

[0072] In one alternative embodiment, the limiting piece 8 is L-shaped and is fixed on the arc-shaped side wall of the upper fixed disc 6. The top surface of the limiting piece 8 is in contact with and flush with the top surface of the upper rotating disc 2. Refer to Figure 2 , the design of the L-shaped limiting piece 8 provides limitation for the lugs in the assembly area. The contact surface with the lugs can also be set as a partial concave surface, which allows sufficient space for the positioning pin to be pushed out.

[0073] In one alternative embodiment, a limiting groove is provided on the inner wall of the installation groove 15, and a limiting block fixedly installed on the outer wall of the slider 16 is slidably installed in the limiting groove. Refer to Figure 4 , the cooperation between the limiting groove and the limiting block can play a role in sliding limitation for the slider 16, preventing it from detaching from the installation groove 15.

[0074] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification and drawings, they can also be directly processed without any doubt based on the existing common technical knowledge. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts and equipment all adopt the conventional models in the existing technology. Therefore, no specific description will be made here.

[0075] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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 positioning pin shaft component assembly and welding device, including a chassis (1), characterized in that, Also includes: An upper rotating disk (2) is installed on the top of the chassis (1) and can rotate intermittently, and the edge of the upper rotating disk (2) is provided with a plurality of side grooves (7) arranged in an annular distribution, and each group of the side grooves (7) is provided with a positioning piece for vertically clamping and positioning the positioning pin; An ear piece slot (3) is provided above the side slot (7) and can be used for the ear piece to be inserted and limited in position, and the ear piece slot (3) can keep the position of the hole on the ear piece coaxial with the positioning pin below; With the chassis (1) as a reference, the corresponding positions of the upper rotating disk (2) are respectively set as an assembly area and a welding area. An ejection portion is provided below the side groove (7) in the assembly area, and a limit plate (8) is provided above the side groove (7). The ejection portion can push up the positioning pin and insert it into the hole of the ear plate to complete the assembly. A welding assembly (4) installed on the chassis (1) is also provided in the welding area.

2. The positioning pin assembly and welding equipment according to claim 1, characterized in that: An upper fixed plate (6) and a lower fixed plate (5) are fixed to the top of the chassis (1) through a support rod; a central shaft (11) is rotatably mounted through the center of the upper fixed plate (6); the top end of the central shaft (11) is fixedly connected to the center of the upper rotating plate (2); a lower rotating plate (10) rotatably mounted on the inner wall of the lower fixed plate (5) is fixed to the bottom end of the central shaft (11); and a driving member for driving the lower rotating plate (10) to intermittently rotate is also installed between the chassis (1) and the lower rotating plate (10).

3. The positioning pin assembly and welding equipment according to claim 2, wherein: The driving member comprises a plurality of protruding pins (29) distributed in an annular manner and fixed at the bottom of the lower rotating disk (10), and also comprises a sliding bar (30) slidably mounted on the top of the chassis (1), a swing rod (32) being rotatably mounted on the outer wall of the sliding bar (30), a driving shaft (33) driven by a motor being mounted on the top of the chassis (1), an active rod (28) being fixed on the outer wall of the driving shaft (33), one end of the active rod (28) being rotatably connected to the middle position of the swing rod (32), and one end of the swing rod (32) away from the sliding bar (30) being set as a shift fork, and the shift fork can make the protruding pin (29) embedded and shift it to rotate.

4. The positioning pin assembly and welding equipment according to claim 3, characterized in that: The positioning member comprises a mounting groove (15) which is provided in the upper rotating disk (2) and communicated with the side groove (7); a slider (16) is mounted on the inner wall of the mounting groove (15) in a limited sliding manner, and a spring (17) is connected between the slider (16) and the inner wall of the mounting groove (15); a pull rod (14) is mounted in a sliding manner inside the slider (16), and one end of the pull rod (14) penetrates from the inside of the upper rotating disk (2) and extends to a groove at the center of the upper rotating disk (2); two semi-ring plates (21) are rotatably mounted on the end of the pull rod (14) which penetrates into the side groove (7), and the two semi-ring plates (21) can form a complete circular ring; a connecting rod (19) is rotatably connected between the slider (16) and the two semi-ring plates (21), and a clamping protrusion (18) is also fixed to the outer wall of the pull rod (14) between the slider (16) and the semi-ring plates (21); The top of the upper fixed disk (6) is also integrally formed with a connecting disk (9) extending into the groove below the upper rotating disk (2), and a cam groove (20) is formed on the top surface of the connecting disk (9). One end of the pull rod (14) extending into the groove is fixed with a pin shaft slidably installed in the cam groove (20).

5. The positioning pin assembly and welding equipment according to claim 4, characterized in that: A plurality of clamping rods (23) arranged in the radial direction are slidably installed on the inner wall of the semi-circular plate (21). A clamping wheel (24) is rotatably installed at the end of the clamping rod (23). An arc-shaped groove is formed on the outer arc surface of the semi-circular plate (21), and an adjusting ring plate (22) is slidably installed in the arc-shaped groove. An arc groove (27) is formed on the outer wall of the adjusting ring plate (22). A fixing pin (26) slidably installed in the arc groove (27) is fixed on the outer wall of the clamping rod (23). Both ends of the connecting rod (19) are respectively rotatably installed on the slider (16) and the adjusting ring plate (22).

6. The positioning pin assembly and welding equipment according to claim 5, characterized in that: The ejecting part includes a through hole formed through the top edge of the upper fixed disk (6), and a lifting rod (12) capable of intermittently lifting vertically is installed in the through hole. A compression spring applying a downward acting force to the lifting rod (12) is also installed between the inner wall of the through hole and the lifting rod (12). A cushion ring (25) is also fixed on the top of the upper fixed disk (6). The cushion ring (25) is provided with a first step (251) corresponding to the assembly area and a second step (252) corresponding to the welding area, and the height of the second step (252) is higher than that of the first step (251).

7. The positioning pin assembly and welding equipment according to claim 6, characterized in that: A through hole is also formed in the lower fixed disk (5) corresponding to the top of the lifting rod (12), and a ejecting rod (13) is slidably installed in the through hole. A connecting rod (31) is rotatably installed between the bottom end of the ejecting rod (13) and the slide bar (30).

8. The positioning pin assembly and welding equipment according to claim 2, characterized in that: The limiting piece (8) is L-shaped and is fixed on the arc-shaped side wall of the upper fixed disk (6). The top surface of the limiting piece (8) is in contact with and flush with the top surface of the upper rotating disk (2).

9. The positioning pin assembly and welding equipment according to claim 4, characterized in that: A limiting groove is formed on the inner wall of the installation groove (15), and a limiting block slidably installed in the limiting groove is fixed on the outer wall of the slider (16).

10. The positioning pin assembly and welding equipment according to any one of claims 1-9, characterized in that: With the chassis (1) as a reference, a feeding area and a discharging area are also provided at corresponding positions on the upper rotating disk (2). A receiving plate (34) fixed on the top of the chassis (1) is provided in the discharging area, and a feeding channel (35) fixed on the top of the chassis (1) is also provided in the feeding area.

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