A dowel pin shaft assembly welding apparatus

Abstract

The present application relates to pin shaft welding technical field, disclose a kind of locating pin shaft assembly welding equipment, including chassis, further comprising: intermittent rotation is installed on the top of chassis and upper rotating disc, the edge position of the upper rotating disc is opened with multiple groups of annular distribution design edge groove, and each group of the edge groove is equipped with the positioning element for vertical clamping positioning of locating pin;Ear piece groove is opened above edge groove and can be inserted and limited by ear piece, and the ear piece groove can make the position of ear piece upper hole and the locating pin below keep coaxial state;With the upper rotating disc corresponding position of chassis as reference is respectively set as assembly area and welding area.This equipment integrates positioning, assembly and welding function, reduces previous assembly process, improves production efficiency, reduces manual error, improves assembly precision and welding quality, and is suitable for efficient automation production of pin shaft and ear piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pin shaft welding, in particular to a positioning pin shaft assembly welding equipment. BACKGROUND

[0002] Pin shafts are key connecting parts in the fields of mechanical manufacturing and automobile parts manufacturing, and often need to be welded after being matched with lugs to form a stable connecting structure. The traditional welding process of pin shafts and lugs usually involves separately manufacturing the two, then assembling the lug and pin shaft, and then welding after being fixed by a clamp.

[0003] A movable pin shaft welding tool is disclosed in a Chinese patent with the authorization announcement number CN118635776B. The welding tool rotates the platform through a driving mechanism, allowing multiple groups of workpiece placement areas to sequentially pass through the welding area for welding. During this process, while the workpiece in the welding area is being welded, the operator can take or place the pin shaft in the other workpiece placement area, remove the finished product, and install a new pin shaft and lug. The workpiece is replaced during the welding time, saving waiting time after welding and achieving continuous production, thereby effectively improving the welding efficiency of batch production of pin shafts and lugs.

[0004] However, although this device can achieve continuous welding processing, the pin shaft and lug still need to be assembled before welding, which results in the need for an additional assembly process before welding, and then the assembled positioning pin and lug are welded by the above-mentioned welding tool. Not only is the process complicated, but the cost of labor input will also increase, and the work efficiency during batch welding will also be affected. SUMMARY

[0005] The present application aims to provide a positioning pin shaft assembly welding equipment to solve at least one of the technical problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a positioning pin shaft assembly welding equipment, comprising a chassis, further comprising:

[0007] An upper rotating disc is installed on the top of the chassis and can rotate intermittently. A plurality of edge slots are arranged in a ring shape at the edge of the upper rotating disc, and each edge slot is provided with a positioning member for vertically clamping and positioning the positioning pin.

[0008] An ear lug slot is provided above the edge slot and can accommodate and limit the ear lug. The ear lug slot can keep the position of the upper hole of the ear lug coaxial with the positioning pin below.

[0009] The corresponding position of the upper rotating disc is set as an assembling area and a welding area with the chassis as a reference, a ejection part is arranged below the edge groove in the assembling area, a limiting sheet is arranged above the edge groove, the ejection part can eject the positioning pin and insert the positioning pin into the hole of the ear sheet to complete the assembling, and a welding assembly is further arranged on the chassis in the welding area.

[0010] Optionally, the top of the chassis is further fixed with an upper fixing disc and a lower fixing disc through a supporting rod, a center shaft is rotatably arranged in the center of the upper fixing disc, the top end of the center shaft is fixedly connected with the center of the upper rotating disc, the bottom end of the center shaft is further fixed with a lower rotating disc which is rotatably arranged on the inner wall of the lower fixing disc, and a driving member for driving the intermittent rotation of the lower rotating disc is further arranged between the chassis and the lower rotating disc.

[0011] Optionally, the driving member comprises a plurality of convex pins which are fixed in the bottom of the lower rotating disc in a ring shape, and comprises a sliding strip which is slidingly arranged on the top of the chassis, a swing rod is rotatably arranged on the outer wall of the sliding strip, a driving shaft driven by a motor is arranged on the top of the chassis, a driving rod is fixed on the outer wall of the driving shaft, one end of the driving rod is rotatably connected with the middle part of the swing rod, the end of the swing rod away from the sliding strip is provided as a yoke, and the yoke can make the convex pin embedded and driven to rotate.

[0012] Optionally, the positioning member comprises a mounting groove which is arranged in the upper rotating disc and communicated with the edge groove, a sliding block is limitingly slidingly arranged on the inner wall of the mounting groove, a spring is connected between the sliding block and the inner wall of the mounting groove, a pull rod is slidingly arranged in the sliding block, one end of the pull rod extends into a groove in the center of the upper rotating disc from the inside of the upper rotating disc, two half ring plates are rotatably arranged on the end of the pull rod inserted into the edge groove, the two half ring plates can form a complete ring, a connecting rod is rotatably connected between the sliding block and the two half ring plates, and a clamping convex is further fixed on the outer wall of the pull rod between the sliding block and the half ring plate.

[0013] The top of the upper fixing disc is further integrally formed with a connecting disc which extends into the groove below the upper rotating disc, a cam groove is arranged on the top surface of the connecting disc, and a pin shaft slidingly arranged in the cam groove is fixed on the end of the pull rod extending into the groove.

[0014] Optionally, a plurality of clamping rods arranged along the radial direction are slidingly arranged on the inner wall of the half ring plate, a clamping wheel is rotatably arranged on the end of the clamping rod, an arc-shaped groove is arranged on the arc surface of the outer wall of the half ring plate, an adjusting ring plate is slidingly arranged in the arc-shaped groove, an arc groove is arranged on the outer wall of the adjusting ring plate, a fixed pin slidingly arranged in the arc groove is fixed on the outer wall of the clamping rod, and the two ends of the connecting rod are rotatably arranged on the sliding block and the adjusting ring plate, respectively.

[0015] Optionally, the ejection part comprises a through hole formed through the top of the edge of the upper fixing disc, and a lifting rod capable of intermittent vertical upward ejection is installed in the through hole, a compression spring capable of exerting downward force on the lifting rod is further installed between the lifting rod and the inner wall of the through hole, the top of the upper fixing disc is further fixed with a grommet, and the grommet is provided with 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, the lower fixing disc is also provided with a through hole corresponding to the top of the lifting rod, and a jacking rod is slidably installed in the through hole.

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

[0018] Optionally, the inner wall of the mounting groove is provided with a limiting groove, and the outer wall of the sliding block is fixed with a limiting block slidably installed in the limiting groove.

[0019] Optionally, with the bottom disc as a reference, the upper rotating disc is further provided with a feeding area and a discharging area corresponding to the positions, the discharging area is provided with a receiving plate fixed to the top of the bottom disc, and the feeding area is further provided with a feeding channel fixed to the top of the bottom disc.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] Firstly, the present application integrates the functions of positioning, assembly and welding, eliminates the previous assembly process, directly completes the assembly and welding on the welding tool, reduces the production steps, improves the production efficiency, realizes the automatic conveying of the positioning pin and the ear piece through the intermittent rotation of the upper rotating disc, reduces the waiting time of the intermediate link, makes the production process more smooth, and realizes the efficient connection of the assembly and welding processes through the reasonable layout of the assembly area and the welding area, thereby improving the overall operation efficiency of the equipment.

[0022] Secondly, the present application can accurately vertically clamp and position the positioning pin through the positioning member, so that the positioning pin remains in a vertical state, the shape of the ear piece groove is the same as that of the ear piece, and the depth of the ear piece groove is the same as the thickness of the ear piece, which ensures that the hole on the ear piece remains coaxial with the positioning pin after the ear piece is embedded, effectively reduces the coaxiality error of the positioning pin and the ear piece after assembly, guarantees the product quality after welding, and further improves the quality of the positioning pin shaft by dividing the assembly process into two steps, which can preliminarily position the positioning pin and the ear piece, and ensure the coaxial accuracy in the subsequent assembly process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1isometric view of the present application;

[0024] Figure 2 isometric view of the present application;

[0025] Figure 3 isometric view of the present application;

[0026] Figure 4 isometric view of the present application Figure 3 view along A-A and partial view of the present application;

[0027] Figure 5 isometric view of the present application Figure 4 view along B-B of the present application;

[0028] Figure 6 isometric view of the present application Figure 4 view along C-C of the present application;

[0029] Figure 7 isometric view of the present application

[0030] Figure 8 isometric view of the present application

[0031] Figure 9 isometric view of the present application Figure 4 isometric view of the present application

[0032] Figure 10 isometric view of the present application

[0033] Figure 11 isometric view of the present application

[0034] Figure 12 isometric view of the present application

[0035] In the figure: 1, base plate; 2, upper rotating disc; 3, ear slot; 4, welding assembly; 5, lower fixed disc; 6, upper fixed disc; 7, side slot; 8, limiting piece; 9, connecting disc; 10, lower rotating disc; 11, central shaft; 12, lifting rod; 13, jacking rod; 14, pull rod; 15, mounting slot; 16, sliding block; 17, spring; 18, clamping protrusion; 19, connecting rod; 20, cam groove; 21, half 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 slot; 28, driving rod; 29, protruding pin; 30, sliding bar; 31, connecting rod; 32, swing rod; 33, driving shaft; 34, material receiving plate; 35, material feeding channel. DETAILED DESCRIPTION

[0036] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the present application.

[0037] Please refer to Figures 1 to 12 The present application provides a technical solution: a positioning pin shaft assembly welding equipment, comprising a chassis 1, further comprising:

[0038] An upper rotating disc 2 is installed on the top of the chassis 1 and can rotate intermittently. A plurality of edge grooves 7 are arranged in a ring shape at the edge position of the upper rotating disc 2, and a positioning member for vertically clamping and positioning the positioning pin is arranged in each edge groove 7.

[0039] An ear piece groove 3 is arranged above the edge groove 7 and can be inserted and limited by the ear piece. The ear piece groove 3 can keep the position of the upper hole of the ear piece coaxial with the positioning pin below.

[0040] The corresponding positions of the upper rotating disc 2 are respectively set as an assembly area and a welding area with the chassis 1 as a reference. A knockout portion is arranged below the edge groove 7 in the assembly area, and a limiting piece 8 is arranged above the edge groove 7. The knockout portion can knock up the positioning pin and insert it into the hole of the ear piece to complete the assembly. A welding assembly 4 is further arranged on the chassis 1 in the welding area.

[0041] When the welding equipment is used, the operator places the positioning pin in each edge groove 7 and clamps and positions the positioning pin through the positioning member in the edge groove 7, so that the positioning pin can keep a vertical state. At the same time, the ear piece is also inserted into the ear piece groove 3, as shown in Figure 2 The shape of the ear piece groove 3 is the same as that of the ear piece, and the depth is the same as the thickness of the ear piece. In this way, the ear piece can keep the positioning effect after being inserted, so that the hole on the ear piece keeps coaxial with the positioning pin. In the subsequent assembly process, the coaxiality of the positioning pin and the ear piece after assembly can be maximized to ensure the product quality after welding. At the same time, it can also avoid the mechanical stress unevenly received by the local position of the ear piece due to the offset effect when the positioning pin is inserted into the hole on the ear piece, thereby avoiding the deformation and further improving the product quality.

[0042] Secondly, after the positioning pin and the ear piece are filled, under the driving of the external structure, the upper rotating disc 2 rotates intermittently and rotates the positioning pin and the ear piece to the assembly area, in the assembly area, the ear piece groove 3 is rotated to the lower side of the limiting piece 8 to limit it, and the ejection part under the side groove 7 drives the positioning pin to be ejected upwards until it is inserted into the hole on the ear piece, so as to complete the assembly process, and then the upper rotating disc 2 rotates the assembled positioning pin shaft to the welding area, and the welding assembly 4 is used to perform the final welding process, and the welding assembly 4 can adopt the existing electric arc welding mode, for example, a welding robot is used to operate, which can effectively improve the welding efficiency and the stability of the welding quality.

[0043] Finally, the operator takes down the welded positioning pin shaft, and then repeats the above process;

[0044] It is worth mentioning that by integrating the positioning, assembling and welding functions, the previous assembly process is reduced, the assembling and welding are completed directly on the welding tooling, the production efficiency is improved, and the positioning piece ensures the accurate matching and positioning of the pin shaft and the ear piece, reduces the error caused by manual operation, and improves the assembly precision.

[0045] In one of the alternative embodiments, an implementation of the upper rotating disc 2 is provided;

[0046] The top of the bottom disc 1 is further fixed with an upper fixed disc 6 and a lower fixed disc 5 through a support rod, the center of the upper fixed disc 6 is rotatably installed with a center shaft 11, the top end of the center shaft 11 is fixedly connected with the center of the upper rotating disc 2, and the bottom end of the center shaft 11 is further fixed with a lower rotating disc 10 rotatably installed in the inner wall of the lower fixed disc 5, and the bottom disc 1 and the lower rotating disc 10 are further installed with a driving member for driving the lower rotating disc 10 to rotate intermittently.

[0047] For details, please refer to Figure 4 The upper fixed disc 6 and the lower fixed disc 5 serve as mounting brackets, and the center shaft 11 coaxially connects the upper rotating disc 2 and the lower rotating disc 10, so that when the lower rotating disc 10 is driven to rotate intermittently by the driving member, the upper rotating disc 2 is also driven to rotate intermittently, thereby achieving the purpose of automatically conveying the positioning pin and the ear piece.

[0048] In one of the alternative embodiments, an implementation of the driving member is provided;

[0049] The driving member comprises a plurality of protruding pins 29 fixed in a ring shape on the bottom of the lower rotating disc 10, and a sliding strip 30 slidingly installed on the top of the base 1. The outer wall of the sliding strip 30 is rotatably installed with a swing lever 32. The top of the base 1 is installed with a driving shaft 33 driven by a motor. The outer wall of the driving shaft 33 is fixed with a driving lever 28. One end of the driving lever 28 is rotatably connected with the middle part of the swing lever 32. The end of the swing lever 32 away from the sliding strip 30 is provided as a yoke, and the yoke can make the protruding pin 29 embedded and driven to rotate.

[0050] Specifically refer to Figure 4 and Figure 6 The swing lever 32, the sliding strip 30 and the driving shaft 33 together form a crank slider structure. First, the motor drives the driving shaft 33 to rotate. The motor can be installed on the bottom of the base 1. When the driving shaft 33 rotates, the swing lever 32 swings, and the sliding strip 30 reciprocally slides.

[0051] During the swinging of the swing lever 32, the yoke at the end of the swing lever 32 makes the protruding pin 29 inserted and driven to rotate with the swinging of the swing lever 32 until the yoke is separated from the protruding pin 29. Thus, the intermittent rotation of the lower rotating disc 10 and the upper rotating disc 2 can be achieved by the continuous swinging of the swing lever 32, thereby achieving the automatic feeding effect.

[0052] In one of the alternative embodiments, an implementation of a positioning member is provided.

[0053] The positioning member comprises a mounting groove 15 opened in the upper rotating disc 2 and communicated with the side groove 7. The inner wall of the mounting groove 15 is slidingly installed with a sliding block 16. The sliding block 16 is connected with the inner wall of the mounting groove 15 through a spring 17. The inside of the sliding block 16 is slidingly installed with a pull rod 14. One end of the pull rod 14 extends into the recess in the center of the upper rotating disc 2 from the inside of the upper rotating disc 2. Two half ring plates 21 are rotatably installed on the end of the pull rod 14 inserted into the side groove 7. The two half ring plates 21 can form a complete ring. A connecting rod 19 is rotatably connected between the sliding block 16 and the two half ring plates 21. The outer wall of the pull rod 14 between the sliding block 16 and the half ring plate 21 is further fixed with a clamping protrusion 18.

[0054] The top of the upper fixed disc 6 is further integrally formed with a connecting disc 9 extending into the recess below the upper rotating disc 2. The top surface of the connecting disc 9 is opened with a cam groove 20. The end of the pull rod 14 extending into the recess is fixed with a pin shaft slidingly installed in the cam groove 20.

[0055] The inner wall of the half ring plate 21 is slidably provided with a plurality of radial clamping rods 23, the end of the clamping rod 23 is rotatably provided with a clamping wheel 24, the arc outer wall of the half ring plate 21 is provided with an arc-shaped slot, and the arc-shaped slot is slidably provided with an adjusting ring plate 22, the outer wall of the adjusting ring plate 22 is provided with an arc slot 27, the outer wall of the clamping rod 23 is fixedly provided with a fixed pin 26 slidably arranged in the arc slot 27, and the two ends of the connecting rod 19 are rotatably arranged on the sliding block 16 and the adjusting ring plate 22 respectively.

[0056] Specifically refer to Figure 4 and Figure 5 In the process of rotating the upper rotating disc 2, it will form relative rotation with the upper fixed disc 6, and the pin shaft on the pull rod 14 will slide in the cam groove 20, referring 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, so that under the action of the pin shaft, the pull rod 14 will make the pull rod 14 do centrifugal or centripetal sliding when transitioning between the inner groove and the curved groove, so as to change the different use states of the positioning member, the specific mode is as follows:

[0057] When the pull rod 14 does centripetal sliding, the pull rod 14 will first pull the half ring plate 21 and the adjusting ring plate 22 to move together, and under the action of the connecting rod 19, the two adjusting ring plates 22 will rotate to close, that is, from Figure 8 state to Figure 7 state, so as to fold the positioning pin in the half ring plate 21 to perform a preliminary positioning function, and then with the continuous centripetal sliding of the pull rod 14, the sliding block 16 and the connecting rod 19 will exert an outward force on the adjusting ring plate 22 due to the elastic force of the spring 17 on the sliding block 16, so that the adjusting ring plate 22 slides in the arc-shaped slot of the half ring plate 21, and in the process of sliding, the sliding cooperation between the fixed pin 26 and the arc slot 27 will drive the clamping rod 23 to slide centripetally along the radius direction of the half ring plate 21, until the clamping wheel 24 contacts and clamps the positioning pin, so that the positioning pin is further clamped and centered by the multiple clamping rods 23, thereby providing preparation for subsequent assembly;

[0058] Then, with the continuous centripetal sliding of the pull rod 14, the clamping convex 18 contacts the sliding block 16, at this time the pull rod 14 can slide in the whole structure together with the side slot 7, until the pin shaft on the pull rod 14 slides to the inner groove with a smaller diameter, so that when the pin shaft slides in the inner groove, the corresponding pull rod 14 can continuously clamp and position the pin shaft, and at the same time, the pin shaft can be transported for assembly;

[0059] In summary, in the above process, the main purpose is to process the positioning pin during assembly and welding, so the inner groove part of the cam groove 20 corresponds to the assembly area and the welding area;

[0060] When the pin shaft on the pull rod 14 is transitioned from the inner groove to the outer groove, the pull rod 14 is moved away from the center, and the two half ring plates 21 are opened, so that the welded positioning pin shaft can be removed or the to-be-processed positioning pin can be placed in. The outer groove of the cam groove 20 corresponds to the feeding and discharging areas.

[0061] That is, with the chassis 1 as the reference, the feeding and discharging areas are arranged at the corresponding positions of the upper rotating disc 2. The discharging area is provided with a receiving plate 34 fixed to the top of the chassis 1, and the feeding area is provided with a feeding channel 35 fixed to the top of the chassis 1.

[0062] It is worth mentioning that the positioning pin is centrally positioned by the vertical clamping wheel 24, which can keep the positioning pin in a vertical and central state and allow the positioning pin to move along the axis in a vertically limited state, thereby facilitating subsequent assembly.

[0063] In one of the alternative embodiments, an implementation of the ejection portion is provided;

[0064] The ejection portion includes a through hole formed in the top of the edge of the upper fixing disc 6, and a lifting rod 12 capable of intermittent vertical lifting is installed in the through hole. A compression spring is installed between the lifting rod 12 and the inner wall of the through hole to apply a downward force to the lifting rod 12. The top of the upper fixing disc 6 is also fixed with a grommet 25, which is provided with a first step 251 in the assembly area and a second step 252 in the welding area. The height of the second step 252 is higher than that of the first step 251.

[0065] For details, please refer to Figure 4 and Figure 10 After the positioning member centrally positions the positioning pin, the bottom end of the positioning pin will slide on the top of the upper fixing disc 6 during the rotation of the upper rotating disc 2, and there will be a gap between the positioning pin and the ear piece. Therefore, when the bottom end of the positioning pin slides to the first step 251 of the grommet 25, the positioning pins will slide relative to each other under the height difference of the first step 251, and the top end of the positioning pin will be inserted into the hole of the ear piece. Please refer to Figure 12 Generally, the end of the positioning pin is chamfered, so when the top end of the positioning pin is inserted into the hole of the ear piece, it can play a certain positioning and correcting role to further reduce the deviation between the positioning pin and the hole of the ear piece.

[0066] In this way, the assembly process is divided into two steps, which can preliminarily position the positioning pin and the ear piece, and ensure the coaxial accuracy in the subsequent assembly process, thereby further improving the quality of the positioning pin shaft.

[0067] Subsequently, when the positioning pin moves to position 12 of the lifting rod, i.e., the assembly area, as shown... Figure 4 As shown, the lifting rod 12 is driven vertically upward by the external structure, pushing the positioning pin upward and inserting it into the hole on the ear piece to complete the assembly process. Then, as the upper rotating disk 2 continues to rotate, the bottom end of the assembled positioning pin shaft will re-contact the second step 252 and move upward again under the propulsion of the second step 252. At this time, the upward movement of the positioning pin can push the ear piece out of the ear piece groove 3. This facilitates the welding operation of the welding component 4 in the welding area and prepares for subsequent detachment. When the welding is completed and the shaft rotates to the discharge area, it can be detached from the side groove 7 under the pushing action of the pull rod 14 to complete the discharge process.

[0068] In one alternative embodiment, an implementation is provided that can drive the lifting rod 12 to move upward intermittently;

[0069] The lower fixed plate 5 also has a through hole at 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] For details, please refer to [link / reference]. Figure 4 and Figure 6 As can be seen from the above, during the rotation of the active lever 28, which drives the swing arm 32 to swing, it will also drive the slide bar 30 to slide back and forth. When the fork of the swing arm 32 contacts the protrusion 29, the slide bar 30 will drive the lifting rod 12 to move down through the connecting rod 31.

[0071] When the fork of the rocker arm 32 disengages from the convex pin 29 and continues to rotate, the upper rotating disk 2 remains stationary. At this time, the slide bar 30 will drive 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, so as to complete the process of assembling the positioning pin. In this way, the intermittent rotation conveying and assembly processes can be alternated, which further improves the work efficiency.

[0072] In one optional embodiment, the limiting piece 8 is L-shaped and fixed to the arc-shaped sidewall of the upper fixed plate 6. The top surface of the limiting piece 8 contacts and is flush with the top surface of the upper rotating plate 2. (See figure) Figure 2 The L-shaped limiting piece 8 provides a limit for the ear piece in the assembly area, and the contact surface with the ear piece can also be set as a partially concave surface, which allows the positioning pin to have enough ejection space.

[0073] In one optional embodiment, a limiting groove is formed on the inner wall of the mounting groove 15, and a limiting block is fixed to the outer wall of the slider 16 and slidably installed in the limiting groove. See [reference] Figure 4 The cooperation between the limiting groove and the limiting block can limit the sliding of the slider 16 and prevent it from disengaging from the mounting groove 15.

[0074] The standard parts used in the embodiments can be directly purchased from the market, and the non-standard structural parts according to the description and drawings can be directly processed according to the existing technical knowledge without doubt, and the connection mode of each part adopts the mature conventional means in the existing technology, and the machinery, parts and equipment adopt the conventional models in the existing technology, so specific description is not made here.

[0075] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pin shaft assembly welding apparatus comprising a chassis (1), characterised in that, Also include: The upper rotating disc (2) is intermittently rotated and installed on the top of the chassis (1), the edge of the upper rotating disc (2) is provided with a plurality of edge grooves (7) arranged in a ring shape, and each edge groove (7) is provided with a positioning member for vertically clamping and positioning the positioning pin; The ear piece groove (3) is provided above the edge groove (7) and can embed and limit the ear piece, and the ear piece groove (3) can keep the position of the upper hole of the ear piece coaxial with the positioning pin below; The corresponding positions of the upper rotating disc (2) are respectively set as an assembly area and a welding area with the chassis (1) as a reference, the edge groove (7) in the assembly area is provided with an ejection portion below and a limiting piece (8) above, the ejection portion can eject the positioning pin and insert it into the hole of the ear piece to complete the assembly, and a welding assembly (4) is further installed on the chassis (1) in the welding area; the top of the chassis (1) is further fixed with an upper fixed disc (6) and a lower fixed disc (5) through a supporting rod; The positioning member comprises a mounting groove (15) provided in the upper rotating disc (2) and communicating with the edge groove (7), a sliding block (16) is limitedly and slidably installed on the inner wall of the mounting groove (15), a spring (17) is connected between the sliding block (16) and the inner wall of the mounting groove (15), a pull rod (14) is slidably installed in the sliding block (16), one end of the pull rod (14) penetrates into the recess in the center of the upper rotating disc (2) from the inside of the upper rotating disc (2), two half ring plates (21) are rotatably installed on one end of the pull rod (14) penetrating into the edge groove (7), the two half ring plates (21) can form a complete ring, and a connecting rod (19) is rotatably connected between the sliding block (16) and the two half ring plates (21), and a clamping convex (18) is further fixed on the outer wall of the pull rod (14) between the sliding block (16) and the half ring plate (21); The top of the upper fixed disc (6) is further integrally provided with a connecting disc (9) extending into the recess below the upper rotating disc (2), the top surface of the connecting disc (9) is provided with a cam groove (20), and one end of the pull rod (14) extending into the recess is fixedly provided with a pin shaft slidably installed in the cam groove (20).

2. The dowel pin shaft assembly welding apparatus of claim 1, wherein: The center of the upper fixed disc (6) is rotatably provided with a center shaft (11), the top end of the center shaft (11) is fixedly connected with the center of the upper rotating disc (2), and the bottom end of the center shaft (11) is further fixedly provided with a lower rotating disc (10) rotatably installed on the inner wall of the lower fixed disc (5), and a driving member for driving the intermittent rotation of the lower rotating disc (10) is further installed between the chassis (1) and the lower rotating disc (10).

3. The dowel pin shaft assembly welding apparatus of claim 2, wherein: The driving member comprises a plurality of convex pins (29) fixed on the bottom of the lower rotating disc (10) in a ring shape, and a sliding bar (30) slidingly installed on the top of the base disc (1), the outer wall of the sliding bar (30) is rotatably installed with a swing rod (32), the top of the base disc (1) is installed with a driving shaft (33) driven by a motor, the outer wall of the driving shaft (33) is fixed with a driving rod (28), one end of the driving rod (28) is rotatably connected with the middle part of the swing rod (32), the end of the swing rod (32) away from the sliding bar (30) is provided as a yoke, and the yoke can embed and drive the convex pin (29) to rotate.

4. The dowel pin shaft assembly welding apparatus of claim 3, wherein: The inner wall of the semi-ring plate (21) is slidingly installed with a plurality of clamping rods (23) arranged in the radial direction, the end of the clamping rod (23) is rotatably installed with a clamping wheel (24), the arc outer wall of the semi-ring plate (21) is provided with an arc-shaped groove, and the arc-shaped groove is slidingly installed with an adjusting ring plate (22), the outer wall of the adjusting ring plate (22) is provided with an arc groove (27), the outer wall of the clamping rod (23) is fixed with a fixed pin (26) slidingly installed in the arc groove (27), and the two ends of the connecting rod (19) are rotatably installed on the sliding block (16) and the adjusting ring plate (22) respectively.

5. The dowel pin shaft assembly welding apparatus of claim 4, wherein: The ejection part comprises a through hole passing through the top edge of the upper fixed disc (6), and a lifting rod (12) capable of intermittent vertical lifting is installed in the through hole, a compression spring applying a downward force to the lifting rod (12) is further installed between the lifting rod (12) and the inner wall of the through hole, the top of the upper fixed disc (6) is further fixed with a spacer ring (25), the spacer ring (25) is provided with a first step (251) in the corresponding assembly area, a second step (252) in the corresponding welding area, and the height of the second step (252) is higher than that of the first step (251).

6. The dowel pin shaft assembly welding apparatus of claim 5, wherein: 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 slidingly installed in the through hole, and a connecting rod (31) is rotatably installed between the bottom end of the top rod (13) and the sliding bar (30).

7. The dowel pin shaft assembly welding apparatus of claim 2, wherein: The limiting piece (8) is L-shaped and fixed on the arc 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).

8. The dowel pin shaft assembly welding apparatus of claim 1, wherein: The inner wall of the mounting groove (15) is provided with a limiting groove, and the outer wall of the sliding block (16) is fixed with a limiting block slidingly installed in the limiting groove.

9. The dowel pin shaft assembly welding apparatus of any of claims 1-8, wherein: With the base disc (1) as the reference, the upper rotating disc (2) is further provided with a feeding area and a discharging area, the discharging area is provided with a receiving plate (34) fixed on the top of the base disc (1), and the feeding area is further provided with a feeding channel (35) fixed on the top of the base disc (1).

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