A fully automated assembly and welding device for track pulley rims

Abstract

This application discloses a fully automatic assembly and welding device for track pulley rims, relating to the field of track pulley processing technology. It includes an assembly section and a welding assembly. The assembly section includes a conveying assembly and sequentially arranged rim unloading cylinder, lower shim loading assembly, steel ball injection assembly, and upper shim loading assembly. The welding assembly includes an upper welding head and a lower welding head, the distance between which is dynamically adjusted through a mechanism. Both the upper and lower welding heads are equipped with electrode plates for spot welding. An insulating guide pin is elastically provided on the inner side of the first electrode plate. The technical advantages of this application are: the rim unloading cylinder, lower shim loading assembly, steel ball injection assembly, and upper shim loading assembly enable automated assembly of the pulley workpiece; the conveying assembly automatically feeds the assembled pulley workpiece into the welding assembly, completing the automatic integrated assembly of the pulley workpiece; and the use of insulating guide pins enables centering of the assembled pulley workpiece before spot welding, improving the success rate of subsequent automatic welding of the welding assembly.

Description

Technical Field

[0001] This application relates to the field of track pulley processing technology, and in particular to a fully automatic assembly and welding device for track pulley rims. Background Technology

[0002] In various automated transmission equipment and mechanical transmission systems, track pulleys are core components for achieving precise displacement and efficient operation of parts. Their structural stability and operational reliability directly affect the overall working efficiency of the equipment. The mainstream structure of existing track pulleys typically consists of a pulley seat, wheel rim, conical washer, pin, and steel balls. The pulley seat provides overall support and positioning; the wheel rim contacts the track to achieve rolling transmission; the conical washer optimizes force distribution through its cooperation with the steel balls; the pin secures the various components; and the steel balls, as rolling elements, are crucial for reducing friction and ensuring smooth operation. This multi-component collaborative structural design not only meets the basic requirements of track pulleys in terms of load-bearing and guidance but also provides the hardware foundation for subsequent automated assembly and performance optimization. With the continuous acceleration of industrial automation, achieving automated assembly, automated conveying, and automated welding of pulley workpieces, and ultimately realizing unmanned production, has become an inevitable trend in industry development.

[0003] Currently, the production of track pulleys still relies mainly on manual assembly and welding. These pulleys contain multiple components such as wheel rims, conical washers, pins, and steel balls. After manual assembly, welding is required before the next pulley assembly can begin. This not only results in low production efficiency but also continuously increases labor costs. Fully automated assembly and welding equipment for pulleys must not only accurately automate the core processes of feeding, positioning, assembly, and welding of each component, but also ensure the stability and reliability of the assembled structure during the conveying process, while simultaneously improving the success rate of subsequent automated welding. Summary of the Invention

[0004] This device provides a fully automated assembly and welding apparatus for track pulley rims, the specific implementation of which is as follows:

[0005] A fully automated assembly and welding device for track pulley rims, comprising:

[0006] An assembly section is set along the conveying direction of the pulley workpiece. The assembly section includes a conveying component and a wheel rim unloading cylinder, a lower shim loading component, a steel ball injection component, and an upper shim loading component arranged in sequence. The pulley workpiece is introduced into the conveying component from the wheel rim unloading cylinder and is driven to be conveyed backward by the V-shaped chuck that moves back and forth.

[0007] A welding assembly located at the end of the pulley workpiece conveying section, which serves as a welding part, includes an upper welding head and a lower welding head. The distance between the two is dynamically coordinated by an adjustment structure. The conveying assembly feeds the assembled pulley workpiece between the upper and lower welding heads.

[0008] Both the upper and lower welding heads are equipped with electrode plates for spot welding. The first electrode plate is located at the bottom of the upper welding head, and an insulating guide pin is elastically provided on the inner side of the first electrode plate. When the upper welding head moves downward, the insulating guide pin is first inserted into the central through hole of the pulley workpiece for centering.

[0009] The second electrode is located at the top of the lower welding head, and a telescopic base is elastically provided around the second electrode. After the upper welding head is pressed down, the telescopic base moves downward and the second electrode is exposed. The exposed second electrode and the first electrode work together to act inward on the contact welding part of the pulley workpiece.

[0010] Preferably, it also includes a worktable for placing the assembly part. The worktable is provided with a positioning plate along the conveying direction of the pulley workpiece. The positioning plate and each V-shaped claw clamp together to hold the two ends of the wheel rim in the pulley workpiece. The end of the worktable is provided with a welding position with an arc-shaped cross-section, and the upper and lower ends of the welding position correspond axially with the upper welding head and the lower welding head, respectively.

[0011] Based on the above technical solutions, by setting up a wheel rim unloading cylinder, a lower shim loading assembly, a steel ball injection assembly, and an upper shim loading assembly, the automated assembly of pulley workpieces was successfully realized. At the same time, the conveying assembly automatically transfers the assembled pulley workpieces to the welding assembly, thereby achieving a fully automated integrated assembly process for pulley workpieces from assembly to welding.

[0012] Preferably, the welding assembly also includes a housing, the lower part of which is fixedly connected to the main body of the lower welding head, the upper part of which is slidably connected to the upper welding head, and the housing is also provided with an adjustment structure for driving the upper welding head to move vertically.

[0013] Preferably, the inner side of the upper welding head is slidably connected to the top end of the insulating guide pin, and a second spring is provided between the two.

[0014] Preferably, a telescopic base is axially slidably sleeved on the outer side of the second electrode sheet, and a first spring is provided between the telescopic base and the body of the lower welding head, and the range of motion of the telescopic base is less than the vertical depth of the welding position.

[0015] Based on the above technical solutions, by configuring insulated guide pins, the assembled pulley workpiece can be accurately centered before the welding components are spot welded, which effectively improves the success rate of automatic welding; while the telescopic chassis can prevent the first electrode plate and the second electrode plate from being accidentally triggered when there is no pulley workpiece.

[0016] Preferably, the conveying assembly includes a transverse translation drive and a longitudinal translation drive mounted on the workbench. The output ends of both are connected to translation plates. The translation plates and the positioning plates are arranged in parallel on the same horizontal plane, and the translation plates are provided with a number of V-shaped claws at equal intervals along their length.

[0017] Based on the above technical solutions, both the lateral translation drive and the longitudinal translation drive are conventional lead screw structures. The V-shaped groove of the V-shaped claw faces the positioning plate, and the height of the positioning plate is higher than the height of the wheel rim.

[0018] Preferably, a first flattening component and a second flattening component are sequentially arranged directly above the pulley workpiece conveying direction. The first flattening component is located at the steel ball injection position of the steel ball injection component, and the second flattening component is located at the front end of the welding component.

[0019] Preferably, the first flattening component and the second flattening component have the same structure. Taking the first flattening component as an example, it includes a second pneumatic push rod arranged vertically. The second pneumatic push rod is suspended on the worktable by a mounting bracket, and the output end of the second pneumatic push rod is provided with an elastic pressure head.

[0020] Based on the above technical solution, by setting a first flattening component and a second flattening component, the first flattening component performs the first flattening after the steel balls are injected into the wheel rim, and the second flattening component achieves the second compaction of the pulley workpiece after the upper shim is installed, thereby improving the stability of the subsequent conveying components.

[0021] Preferably, the steel ball injection assembly includes a storage tank and a support. A feed plate is fixedly installed below the support, and the feed plate is vertically aligned with the inner top of the wheel rim through the feed port. A feeding slide is slidably installed between the support and the feed plate. A vertically guiding storage port is opened on the feeding slide. The storage tank is vertically connected to the storage port of the feeding slide in the initial state through the ball injection pipeline and the support. After the feeding slide moves horizontally, it feeds the steel ball into the feed port. After the horizontal movement, the end of the feeding slide is sealed at the outlet of the ball injection pipeline.

[0022] Based on the above technical solution, by configuring a bracket, a feeding plate and a feeding slide, the quantitative feeding of steel balls into the wheel rim can be realized: when the storage port corresponds to the ball injection pipeline, the quantitative storage of steel balls is completed; when the storage port corresponds to the feeding port, the steel balls are automatically guided into the wheel rim by gravity, and at the same time, with the help of the first flattening component, the uniformity of steel ball distribution when automatically guided into the wheel rim is effectively improved.

[0023] Preferably, the lower gasket feeding assembly has the same structure as the upper gasket feeding assembly. Taking the lower gasket feeding assembly as an example, it includes a feeding vibratory plate and a T-shaped conveying trough. The T-shaped conveying trough is composed of a second conveying trough and a first conveying trough that is laterally connected to the second conveying trough. The end of the first conveying trough is connected to the feeding vibratory plate. One end of the second conveying trough is provided with a first pneumatic push rod, and the other end of the second conveying trough corresponds to the wheel rim to be assembled.

[0024] Based on the above technical solutions, the feeding vibratory plate is a conventional component in the field. The upper and lower pads are connected by corresponding openings at the outlet of the feeding vibratory plate to limit the orientation of the pads when they are being discharged.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] 1. This invention achieves automated assembly of pulley workpieces by setting up a wheel rim unloading cylinder, a lower shim loading assembly, a steel ball injection assembly, and an upper shim loading assembly. The conveying assembly automatically feeds the assembled pulley workpieces into the welding assembly, completing the automatic integrated assembly of pulley workpieces and greatly improving the assembly efficiency of pulleys.

[0027] 2. The present invention has a simple structure. By setting an insulating guide pin, it realizes the centering operation of the assembly pulley workpiece before the welding assembly is spot welded, thereby improving the success rate of automatic welding of the subsequent welding assembly.

[0028] 3. By setting up a first flattening component and a second flattening component, the first flattening component performs the first flattening after the steel balls are injected into the wheel rim, and the second flattening component achieves secondary compaction of the pulley workpiece after the upper shim is installed, thereby improving the stability of the subsequent conveying component.

[0029] 4. The present invention can achieve quantitative feeding of steel balls into the wheel rim by setting up a bracket, a feeding plate and a feeding slide plate. When the storage port corresponds to the ball injection pipeline, the steel balls are quantitatively stored. When the storage port corresponds to the feeding port, the steel balls are introduced into the wheel rim. Furthermore, the uniformity of the steel balls being automatically introduced into the wheel rim is improved by using the first flattening component. Attached Figure Description

[0030] Figure 1 This is an exploded structural diagram of the pulley workpiece in use according to the present invention;

[0031] Figure 2 This is a cross-sectional schematic diagram of the pulley workpiece structure in use according to the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the present invention;

[0033] Figure 4 This is a side view of the assembly section in this invention.

[0034] Figure 5 This is a top view of the assembly section in this invention.

[0035] Figure 6 This is a cross-section of the steel ball injection assembly structure in this invention. Figure 1 ;

[0036] Figure 7 This is a cross-section of the steel ball injection assembly structure in this invention. Figure 2 ;

[0037] Figure 8 This is a front view structural diagram of the welded part in this invention;

[0038] Figure 9 This is a side view of the welded portion in this invention.

[0039] Figure 10 This is a schematic diagram of the welding assembly in this invention;

[0040] Figure 11 This is an exploded structural diagram of the welding assembly in this invention;

[0041] Figure 12 This is a cross-sectional view of the welding assembly structure in this invention;

[0042] Figure 13 This is a schematic diagram of the upper welding head in this invention;

[0043] Figure 14 This is a schematic diagram of the structure of the lower welding head in this invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Pulley workpiece; 2. Conveying assembly; 3. Workbench; 4. Steel ball injection assembly; 5. Lower shim feeding assembly; 6. Upper shim feeding assembly; 7. Welding assembly; 8. First flattening assembly; 9. Second flattening assembly; 10. Pin; 11. Wheel rim unloading cylinder; 12. Sleeve; 13. V-shaped collecting plate; 14. Pulley seat.

[0046] 101. Wheel rim; 102. Lower gasket; 103. Steel ball; 104. Upper gasket; 105. Welded joint; 201. Translation plate; 202. V-shaped chuck; 203. Lateral translation drive component; 204. Longitudinal translation drive component; 301. Positioning plate; 302. Welding position; 401. Storage box; 402. Bead injection pipeline; 403. Feed plate; 404. Feeding slide plate; 405. Bracket; 501. First conveying trough; 502. Second conveying trough; 503. First pneumatic push rod; 504. Feeding vibratory plate; 701. Upper welding head; 702. Lower welding head; 703. Housing; 704. Insulating guide pin; 705. Telescopic chassis; 706. First spring; 707. Second spring; 801. Mounting bracket; 802. Second pneumatic push rod; 803. Elastic pressure head.

[0047] 4031, feed inlet; 4041, storage inlet; 7011, first electrode plate; 7021, second electrode plate; 7031, sliding plate; 7032, cylinder. Detailed Implementation

[0048] The specific embodiments of the present invention are described below with reference to the accompanying drawings and examples:

[0049] It should be noted that the structures, proportions, sizes, etc. illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification, so that those skilled in the art can understand and read them, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0050] Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0051] The following is in conjunction with the appendix Figure 1-14 This application will be described in further detail.

[0052] This application discloses a fully automated assembly and welding device for track pulley rims.

[0053] Example 1

[0054] Reference Figures 1 to 7This embodiment discloses a fully automatic assembly and welding device for track pulley rims, including a workbench 3 and an assembly section arranged along the conveying direction of the pulley workpiece 1. The assembly section includes a conveying component 2 and a rim unloading cylinder 11, a lower pad loading component 5, a steel ball injection component 4, a first flattening component 8, an upper pad loading component 6, and a second flattening component 9 arranged in sequence. The pulley workpiece 1 is introduced into the conveying component 2 from the rim unloading cylinder 11 and driven to be conveyed backward by the reciprocating V-shaped claws 202. In this structure, the workbench 3 is provided with a positioning plate 301 along the conveying direction of the pulley workpiece 1. The positioning plate 301 and each V-shaped claw 202 together clamp and act on both ends of the rim 101 in the pulley workpiece 1. The first flattening component 8 is located at the steel ball 103 injection position of the steel ball injection component 4, and the second flattening component 9 is located at the front end of the welding component 7.

[0055] The conveying assembly 2 includes a transverse translation drive 203 and a longitudinal translation drive 204 mounted on the workbench 3. The output ends of both are connected to a translation plate 201. The translation plate 201 and the positioning plate 301 are arranged in parallel on the same horizontal plane. The translation plate 201 is provided with several V-shaped claws 202 at equal intervals along its length. In this structure, both the transverse translation drive 203 and the longitudinal translation drive 204 are conventional lead screw structures. The two are combined at right angles to realize the longitudinal and transverse movement of the translation plate 201.

[0056] The steel ball injection assembly 4 includes a storage tank 401 and a bracket 405. A feed plate 403 is fixedly installed below the bracket 405, and the feed plate 403 is vertically aligned with the inner top of the wheel rim 101 through the feed port 4031. A feeding slide plate 404 is slidably installed between the bracket 405 and the feed plate 403. A vertically guiding storage port 4041 is opened on the feeding slide plate 404. The storage tank 401 is vertically connected to the storage port 4041 of the feeding slide plate 404 in the initial state through the ball injection pipe 402 and the bracket 405. After the feeding slide plate 404 is translated, it feeds the steel ball 103 into the feed port 4031. After the translation, the end of the feeding slide plate 404 is blocked at the outlet of the ball injection pipe 402.

[0057] The lower gasket feeding assembly 5 has the same structure as the upper gasket feeding assembly 6. Taking the lower gasket feeding assembly 5 as an example, it includes a feeding vibratory plate 504 and a T-shaped conveying groove. The T-shaped conveying groove is composed of a second conveying groove 502 and a first conveying groove 501 that is laterally connected to the second conveying groove 502. The end of the first conveying groove 501 is connected to the feeding vibratory plate 504. One end of the second conveying groove 502 is provided with a first pneumatic push rod 503. The other end of the second conveying groove 502 corresponds to the wheel rim 101 to be assembled. In this structure, the first conveying groove 501 is in the shape of a slope.

[0058] The first flattening component 8 and the second flattening component 9 have the same structure. Taking the first flattening component 8 as an example, it includes a second pneumatic push rod 802 arranged vertically. The second pneumatic push rod 802 is suspended on the workbench 3 by the mounting bracket 801, and the output end of the second pneumatic push rod 802 is provided with an elastic pressure head 803.

[0059] Combination Figure 1 and Figure 2 When in use, the pulley workpiece 1 is installed on the side of the pulley seat 14, and a sleeve 12 for changing the distance is provided between the side of the pulley seat 14 and the pulley workpiece 1. The connection is positioned on the pulley seat 14 by a pin 10. The pulley workpiece 1 includes a wheel rim 101. The two ends of the wheel rim 101 are respectively provided with an inwardly conical lower pad 102 and an upper pad 104. A V-shaped ring is formed laterally between the two. The outer side of the V-shaped ring and the inner side of the wheel rim 101 are used to fill steel balls 103. Therefore, only the lower pad 102 and the upper pad 104 with the same structure and opposite direction need to be welded. The abutting end of the two is the butt weld 105. After butt welding, the pulley workpiece 1 can be assembled as a whole.

[0060] The specific fully automated assembly process is as follows: the wheel rim 101 falls vertically from the wheel rim unloading cylinder 11 into the worktable 3; the transverse translation drive 203 and the longitudinal translation drive 204 operate alternately, and the V-shaped claw 202 combines with the positioning plate 301 to achieve step-by-step forward conveying of the wheel rim 101; when the wheel rim 101 passes the lower pad feeding assembly 5, the V-shaped claw 202 and the positioning plate 301 clamp the wheel rim 101, the feeding vibrating plate 504 feeds the lower pad 102 along the first conveying groove 501 into the second conveying groove 502, the first pneumatic push rod 503 sends the lower pad 102 out along the second conveying groove 502, and the lower pad 102 automatically falls vertically into the wheel rim 101. The end of the wheel rim is chamfered, so the lower pad 102 can be automatically centered after falling. The V-shaped claw 202 pushes the wheel rim 101 into the steel ball injection component 4. The steel balls 103 in the storage box 401 are introduced into the storage port 4041 of the feeding slide plate 404 through the ball injection pipe 402. The size of the storage port 4041 limits the number of steel balls 103 required for a single wheel rim 101. After the feeding slide plate 404 is pushed out horizontally, the storage port 4041, the inlet 4031 and the wheel rim 101 are vertically aligned. The steel balls 103 fall into the inner side of the wheel rim 101 and above the lower pad 102. During this period, the first flattening component 8 acts on the steel balls 103 to flatten the steel balls 103 on the inner side of the wheel rim 101.

[0061] The V-shaped chuck 202 pushes the wheel rim 101 into the upper shim feeding assembly 6, and the upper shim 104 falls vertically into the wheel rim 101, realizing the automatic assembly of the steel ball 103, wheel rim 101, lower shim 102 and upper shim 104; after automatic assembly, the V-shaped chuck 202 pushes the wheel rim 101 into the second flattening assembly 9, and the second flattening assembly 9 presses down to realize the stable assembly of the pulley workpiece 1; after the V-shaped chuck 202 reciprocates again, it sends the assembled pulley workpiece 1 into the welding position 302, and pushes the previous pulley workpiece 1 that was stopped at the welding position 302 and has been welded away from the welding position 302.

[0062] Example 2

[0063] Reference Figures 1 to 14 In addition to the above embodiments, this embodiment also discloses a fully automatic assembly and welding device for track pulley rims, which further includes a welding assembly 7 located at the end of the conveying process of the pulley workpiece 1 as a welding part. The assembly 7 includes an upper welding head 701 and a lower welding head 702, the distance between which is dynamically adjusted by a mechanism. The conveying assembly 2 feeds the assembled pulley workpiece 1 between the upper welding head 701 and the lower welding head 702. In this structure, the end of the workbench 3 is provided with a welding position 302 with an arc-shaped cross-section, and the upper and lower ends of the welding position 302 correspond axially to the upper welding head 701 and the lower welding head 702, respectively. Each of the 702 is provided with an electrode plate for spot welding. The first electrode plate 7011 is located at the bottom end of the upper welding head 701, and an insulating guide pin 704 is elastically provided on the inner side of the first electrode plate 7011. When the upper welding head 701 moves downward, the insulating guide pin 704 is first inserted into the central through hole of the pulley workpiece 1 for centering. The lower part of the lower welding head 702 is provided with a V-shaped material collection plate 13 for receiving the pulley workpiece 1. In this structure, before spot welding, the insulating guide pin 704 is first inserted into the inner side of the lower shim 102 and the upper shim 104 to realize the centering operation of the wheel rim 101, the lower shim 102 and the upper shim 104 before welding.

[0064] The second electrode 7021 is located at the top of the lower welding head 702, and the outer periphery of the second electrode 7021 is elastically provided with a telescopic base 705. After the upper welding head 701 is pressed down, the telescopic base 705 moves downward and the second electrode 7021 is exposed. The exposed second electrode 7021 and the first electrode 7011 work together to act inward on the welding part 105 of the pulley workpiece 1. The welding assembly 7 also includes a housing 703. The lower part of the housing 703 is fixedly connected to the main body of the lower welding head 702, and the upper part of the housing 703 is slidably connected to the upper welding head 701. The housing 703 is also provided with an adjustment structure for driving the upper welding head 701 to move vertically. In this structure, the adjustment structure includes a cylinder 7032 located on the side of the housing 703, and its arm end is connected to the body of the upper welding head 701 through a sliding plate 7031.

[0065] The inner side of the upper welding head 701 is slidably connected to the top end of the insulating guide needle 704, and a second spring 707 is provided between the two; the outer side of the second electrode plate 7021 is axially slidably fitted with a telescopic base 705, and a first spring 706 is provided between the telescopic base 705 and the body of the lower welding head 702. When the telescopic base 705 is not under pressure, the height of the telescopic base 705 is higher than the height of the second electrode plate 7021, and the top end of the telescopic base 705 is flush with the worktable 3, so as to ensure that the pulley workpiece 1 can be horizontally fed in, and can also effectively prevent the second electrode plate 7021 from contacting the first electrode plate 7011 when there is no pulley workpiece 1.

[0066] The specific automatic welding process is as follows: After the V-shaped chuck 202 horizontally feeds the pulley workpiece 1 into the welding position 302, the cylinder 7032 drives the upper welding head 701 to move downward, and the insulating guide needle 704 is inserted into the wheel rim 101, the lower shim 102 and the upper shim 104; the upper welding head 701 continues to move downward, the telescopic base 705 retracts, and the second electrode plate 7021 is exposed. The second electrode plate 7021 and the first electrode plate 7011 work together to act inward on the butt welding part 105 of the pulley workpiece 1, realizing the butt welding of the lower shim 102 and the upper shim 104, and the steel ball 103 is interference-fitted between the V-ring and the wheel rim 101; after the butt welding is completed, the upper welding head 701 moves upward and the telescopic base 705 is reset under the action of the first spring 706.

[0067] Many other changes and modifications can be made without departing from the concept and scope of this invention. It should be understood that this invention is not limited to the specific embodiments, and the scope of this invention is defined by the appended claims.

Claims

1. A fully automatic assembly and welding device for track pulley rims, characterized in that, include: An assembly section is provided along the conveying direction of the pulley workpiece (1); The pulley workpiece (1) includes a wheel rim (101), with an inwardly tapered lower pad (102) and an upper pad (104) respectively provided at both ends of the wheel rim (101), forming a V-shaped ring laterally between the two, and steel balls (103) are used to fill the space between the outer side of the V-shaped ring and the inner side of the wheel rim (101). The abutting ends of the lower pad (102) and the upper pad (104) are welded parts (105). The assembly unit includes a conveying assembly (2) and a wheel rim unloading cylinder (11), a lower gasket loading assembly (5), a steel ball injection assembly (4), and an upper gasket loading assembly (6) arranged in sequence. The pulley workpiece (1) is introduced into the conveying assembly (2) from the wheel rim unloading cylinder (11) and is driven to be conveyed backward by the V-shaped chuck (202) that moves back and forth. The welding assembly (7), which is located at the end of the conveying of the pulley workpiece (1) and serves as the welding part, includes an upper welding head (701) and a lower welding head (702). The distance between the two is dynamically coordinated by the adjustment structure. The conveying assembly (2) sends the assembled pulley workpiece (1) between the upper welding head (701) and the lower welding head (702). Both the upper welding head (701) and the lower welding head (702) are provided with electrode plates for spot welding. The first electrode plate (7011) is located at the bottom end of the upper welding head (701), and an insulating guide pin (704) is elastically provided on the inner side of the first electrode plate (7011). When the upper welding head (701) moves downward, the insulating guide pin (704) is first inserted into the central through hole of the pulley workpiece (1) for centering. The second electrode plate (7021) is located at the top of the lower welding head (702), and the outer periphery of the second electrode plate (7021) is elastically provided with a telescopic base plate (705). After the upper welding head (701) is pressed down, the telescopic base plate (705) moves downward and the second electrode plate (7021) is exposed. The exposed second electrode plate (7021) and the first electrode plate (7011) work together to act inward on the welding part (105) of the pulley workpiece (1). It also includes a workbench (3) for placing the assembly part. The workbench (3) is provided with a positioning plate (301) along the conveying direction of the pulley workpiece (1). The positioning plate (301) and each of the V-shaped claws (202) clamp the two ends of the wheel rim (101) in the pulley workpiece (1). The end of the workbench (3) is provided with a welding position (302) with an arc-shaped cross-section. The upper and lower ends of the welding position (302) are respectively axially corresponding to the upper welding head (701) and the lower welding head (702). The inner side of the upper welding head (701) is slidably connected to the top end of the insulating guide pin (704), and a second spring (707) is provided between the two. The outer side of the second electrode sheet (7021) is axially slidably fitted with a telescopic base (705), and a first spring (706) is provided between the telescopic base (705) and the body of the lower welding head (702).

2. The fully automatic assembly and welding device for track pulley rims according to claim 1, characterized in that, The welding assembly (7) also includes a housing (703), which is fixedly connected to the body of the lower welding head (702) at the bottom and slidably connected to the upper welding head (701) at the top. The housing (703) is also provided with an adjustment structure for driving the upper welding head (701) to move vertically.

3. The fully automatic assembly and welding device for track pulley rims according to claim 2, characterized in that, The conveying assembly (2) includes a transverse translation drive (203) and a longitudinal translation drive (204) mounted on the workbench (3), and the output ends of both are connected to a translation plate (201). The translation plate (201) and the positioning plate (301) are arranged in parallel on the same horizontal plane, and the translation plate (201) is provided with a plurality of V-shaped claws (202) at equal intervals along its length.

4. The fully automatic assembly and welding device for track pulley rims according to claim 3, characterized in that, A first flattening component (8) and a second flattening component (9) are arranged sequentially above the conveying direction of the pulley workpiece (1). The first flattening component (8) is located at the injection position of the steel ball (103) of the steel ball injection component (4), and the second flattening component (9) is located at the front end of the welding component (7).

5. The fully automatic assembly and welding device for track pulley rims according to claim 4, characterized in that, The steel ball injection assembly (4) includes a storage tank (401) and a bracket (405). A feed plate (403) is fixedly provided below the bracket (405), and the feed plate (403) is vertically aligned with the inner top of the wheel rim (101) through the feed port (4031). A feeding slide plate (404) is slidably provided between the bracket (405) and the feeding plate (403). A vertically guiding storage port (4041) is provided on the feeding slide plate (404). The storage box (401) is vertically connected to the storage port (4041) of the feeding slide plate (404) in the initial state through the bead injection pipe (402) and the bracket (405). After the feeding slide plate (404) is translated, it sends the steel ball (103) into the feeding port (4031). After the translation, the end of the feeding slide plate (404) is sealed at the outlet of the bead injection pipe (402).

6. The fully automatic assembly and welding device for track pulley rims according to claim 5, characterized in that, The lower pad feeding assembly (5) has the same structure as the upper pad feeding assembly (6). Taking the lower pad feeding assembly (5) as an example, it includes a feeding vibratory plate (504) and a T-shaped conveying groove. The T-shaped conveying groove is composed of a second conveying groove (502) and a first conveying groove (501) that is laterally connected to the second conveying groove (502). The end of the first conveying groove (501) is connected to the feeding vibratory plate (504). One end of the second conveying groove (502) is provided with a first pneumatic push rod (503). The other end of the second conveying groove (502) corresponds to the wheel rim (101) to be assembled.

7. The fully automatic assembly and welding device for track pulley rims according to claim 6, characterized in that, The first flattening component (8) and the second flattening component (9) have the same structure. Taking the first flattening component (8) as an example, it includes a second pneumatic push rod (802) arranged vertically. The second pneumatic push rod (802) is suspended on the workbench (3) by a mounting bracket (801), and the output end of the second pneumatic push rod (802) is provided with an elastic pressure head (803).

Images