A movable pin welding tool

Abstract

The present invention provides a movable pin welding tool, which relates to the technical field of auxiliary equipment for pin welding, including a tool base, a driving motor is fixedly connected to the tool base by bolts at the bottom, a lower rotating table is fixedly connected to the rotating shaft of the driving motor, a rotating table support frame is fixedly connected to the top of the lower rotating table, and an upper rotating table is welded to the top of the rotating table support frame. The pin welding tool in the present application has the functions of automatic clamping and automatic unloading of the pin, and does not require manual or automated mechanical control, thereby improving production efficiency and reducing production costs, and solving the problem that the traditional pin ear piece welding tool needs to be manually or mechanically installed on the tool before welding can be started, and after welding is completed, the finished workpiece needs to be taken out manually or mechanically and a new pin and ear piece needs to be installed, and the welding work is stopped during this process, and the intermittent time process is not conducive to efficient and continuous welding work.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary equipment for pin shaft welding, and in particular to a movable pin shaft welding tool. Background Art

[0002] The tailgate pin is one of the key components of the automobile tailgate. It mainly connects and fixes the tailgate. During the manufacturing process of some models of tailgate pins, it is necessary to weld ears at the end of the pin body to limit the axial movement of the pin. Traditional ear welding generally fixes the pin body through tooling, and then inserts the ear, and welds along the gap by welding robots or manually.

[0003] When using the traditional pin shaft and ear piece welding tool, the pin shaft and the ear piece need to be installed on the tool manually or by a robot before welding can be started. After welding is completed, the finished workpiece needs to be removed manually or mechanically and new pin shafts and ear pieces need to be installed. During this process, the welding work is stopped, and the intermittent time process is not conducive to efficient and continuous welding work. When using the traditional welding tool, after the pin shaft is installed manually, the tool needs to be operated to clamp and fix the pin shaft, which is cumbersome and will also affect production efficiency. If automated machinery is used in conjunction with a robot to place and fix the pin shaft, high-precision automated machinery needs to be used, which is not conducive to controlling production costs. Summary of the invention

[0004] The disclosed embodiment relates to a movable pin welding tool to solve the problem that when using a traditional pin and ear welding tool, it is necessary to manually or mechanically install the pin and the ear on the tool before welding can be started, and after welding is completed, the finished workpiece needs to be taken out manually or mechanically and new pins and ears need to be installed. During this process, the welding work is stopped, and the intermittent time process is not conducive to efficient and continuous welding work; when using a traditional welding tool, after the pin is manually installed, the tool needs to be operated to clamp and fix the pin, which is cumbersome and will also affect production efficiency. If an automated machine is used in conjunction with a robot to place and fix the pin, high-precision automated machinery needs to be used, which is not conducive to controlling production costs.

[0005] The present invention discloses a first aspect, which provides a movable pin welding tool, specifically including a tool base, a driving motor is fixedly connected to the tool base by bolts at the bottom, a lower rotating table is fixedly connected to the rotating shaft of the driving motor, a rotating table support frame is fixedly connected to the top of the lower rotating table, an upper rotating table is welded to the top of the rotating table support frame, the lower rotating table is coaxial with the upper rotating table, the upper rotating table and the lower rotating table are both installed on the rotating shaft of the driving motor by interference fit, four positioning sleeves are fixedly connected to the top of the lower rotating table, the positioning sleeve is a split structure, two lifting top plates are movably connected to the inside of the positioning sleeve, and two built-in clamps are movably connected to the inside of the positioning sleeve.

[0006] In at least some embodiments, a limiting ring with a circular structure is fixedly connected to the upper surface of the tooling base, and a fastening boss with a cylindrical structure is protruded from the rear end of the limiting ring.

[0007] In at least some embodiments, two arc-shaped unloading wedges are fixedly connected to the front of the upper surface of the tooling base. The two unloading wedges are arranged in a front-to-back manner, are concentric with the tooling base, and both ends of the upper surface of the unloading wedges are processed with slope structures.

[0008] In at least some embodiments, the lower rotating table is provided with four square-structured limit guide openings running longitudinally therethrough, each limit guide opening is provided with a push rod through hole on the inner and outer sides respectively, a push rod limit opening is provided above the push rod through hole, and the push rod limit opening is coaxial with the push rod through hole.

[0009] In at least some embodiments, eight upper sockets with circular hole structures are longitudinally penetrated through the upper surface of the upper rotating table, and eight ear plate placement cavities are also opened on the upper surface of the upper rotating table, and the eight ear plate placement cavities are respectively located directly above the eight upper sockets.

[0010] In at least some embodiments, the positioning sleeve is a split sleeve body formed by combining two sleeve bodies by screws, a sleeve positioning hole is longitudinally penetrated through the positioning sleeve, a positioning rod guide cavity is processed inside the positioning sleeve, and eight sleeve positioning holes in the four positioning sleeves are coaxial with the eight upper sockets respectively.

[0011] In at least some embodiments, the two ends of the positioning rod guide cavity are respectively connected to the two sleeve positioning holes, and a guide cavity limiting opening is provided at the bottom of the positioning rod guide cavity, and the lower end of the guide cavity limiting opening passes through the lower surface of the positioning sleeve.

[0012] In at least some embodiments, a round-headed push rod is vertically welded to the lower end of the lifting top plate, the lifting top plate is slidably connected in the socket positioning hole, the round-headed push rod is slidably connected to the push rod through hole, and the two round-headed push rods located in front of the lower rotating table are slidably connected to the two unloading wedge plates.

[0013] In at least some embodiments, the built-in clamp block is slidably connected to the inside of the positioning rod guide cavity. Two built-in clamp blocks are provided inside the positioning rod guide cavity. Two reset springs are installed between the two built-in clamp blocks. A clamp block arc groove is provided at the outer end of the built-in clamp block.

[0014] In at least some embodiments, the arc groove of the clamp block is in an arc-shaped structure, and an arc groove wedge edge is respectively provided on the upper edge and the lower edge of the arc groove of the clamp block. A clamp block limit push plate is provided on the lower surface of the built-in clamp block, and clamp block wedge edges are processed on both edges of the clamp block limit push plate. The clamp block limit push plate is slidably connected in the limit opening of the guide cavity and the limit guide opening.

[0015] The present invention provides a movable pin welding tool, which has the following beneficial effects:

[0016] 1. The pin welding tool in the present invention has multiple groups of workpiece mounting ports, and the pin welding tool is a rotating platform, which can be driven to rotate by a driving mechanism so that multiple groups of workpiece placement areas can pass through the welding area for sequential welding. In this process, when the workpiece located in the welding area is welded, the operator can take or place the pins in other workpiece placement areas, take out the welded finished product, and install new pins and ears. The workpiece is replaced during the welding time period, which saves waiting time after welding is completed, thereby realizing continuous production and effectively improving the welding efficiency of batch production of pins and ears.

[0017] The two clamping blocks are positioned in a position to push the two clamping blocks against the two positioning holes of the two sleeves, respectively, to push and clamp the pins in the positioning holes of the sleeves, thereby preventing the pins from moving or rotating during welding and affecting the welding accuracy. When welding is completed, as the rotary table rotates, the two built-in clamping blocks in the positioning sleeve are disengaged from the fastening bosses, releasing the limit of the built-in clamping blocks, and then releasing the clamping of the pins, so that the pins are restored to freedom, which is convenient for the staff to take out the finished workpiece. It can be seen that the pin welding tool in the present application has the functions of automatic clamping and automatic unloading of the pins, without the need for manual or automatic mechanical control, thereby improving production efficiency and reducing production costs.

[0018] 3. The present application also provides an automatic pin-pushing mechanism formed by the cooperation of the lifting top plate and the unloading wedge plate. When the rotating table rotates, the lifting top plate is driven to enter the unloading wedge plate. As the rotating table rotates, the spherical structure at the bottom of the round-headed push rod is controlled to slide toward the middle along the slope of the unloading wedge plate, and the lifting top plate rises along the slope of the unloading wedge plate, automatically pushing the pin to the top, making it easier for the staff to take out the finished product after welding, making the welding work more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 A schematic diagram showing the overall structure of the present application;

[0023] Figure 2 The structural schematic diagram at the bottom of this application is shown;

[0024] Figure 3 It shows a schematic diagram of the structure of the rotary table and the tooling base in the present application in a separated state;

[0025] Figure 4 The structural schematic diagram of the rotating platform of the present application is shown;

[0026] Figure 5 The schematic diagram of the structure inside the rotating platform of the present application is shown;

[0027] Figure 6 The structural schematic diagram of the rotating platform in this application is shown;

[0028] Figure 7 A schematic diagram of the structure inside the positioning sleeve of the present application is shown;

[0029] Figure 8 It shows a schematic structural diagram of the installation position of the lifting top plate and the built-in clamping block in the positioning sleeve of the present application;

[0030] Fig. 9 This application shows Figure 3 A schematic diagram of the partially enlarged structure at point A in the middle;

[0031] Fig.10 This application shows Figure 5 A schematic diagram of the partially enlarged structure at B in the middle;

[0032] Fig.11 This application shows Figure 6 Schematic diagram of the partially enlarged structure at point C in the middle.

[0033] Reference numerals list

[0034] 1. Tooling base; 101. Limiting ring; 102. Fastening boss; 103. Unloading wedge plate; 2. Driving motor; 3. Lower rotating table; 301. Limiting guide port; 302. Ejector rod through hole; 303. Ejector rod limiting port; 4. Rotating table support frame; 5. Upper rotating table; 501. Upper socket; 502. Ear plate placement cavity; 6. Positioning sleeve; 601. Sleeve positioning hole; 602. Positioning rod guide cavity; 603. Guide cavity limiting port; 7. Lifting top plate; 701. Round head ejector; 8. Built-in clamping block; 801. Clamping block arc groove; 802. Arc groove wedge edge; 803. Clamping block limiting push plate; 804. Clamping block wedge edge; 805. Reset tension spring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 11 :

[0037] The present invention proposes a movable pin welding tool, comprising a tool base 1, a driving motor 2 is fixedly connected to the tool base 1 by bolts, a limiting ring 101 with a circular ring structure is fixedly connected to the upper surface of the tool base 1, a fastening boss 102 with a cylindrical structure is convexly provided at the rear end of the limiting ring 101, and two unloading wedge plates 103 with a circular arc structure are fixedly connected to the front of the upper surface of the tool base 1, the two unloading wedge plates 103 are arranged front and back, the two unloading wedge plates 103 are concentric with the tool base 1, and both ends of the upper surface of the unloading wedge plates 103 are reinforced. The machine has a slope structure, a lower rotating table 3 is fixedly connected to the rotating shaft of the driving motor 2, a rotating table support frame 4 is fixedly connected above the lower rotating table 3, an upper rotating table 5 is welded above the rotating table support frame 4, the lower rotating table 3 is coaxial with the upper rotating table 5, the upper rotating table 5 and the lower rotating table 3 are both installed on the rotating shaft of the driving motor 2 by interference fit, four positioning sleeves 6 are fixedly connected above the lower rotating table 3, the positioning sleeve 6 is a split structure, two lifting top plates 7 are movably connected inside the positioning sleeve 6, and two built-in clamping blocks 8 are movably connected inside the positioning sleeve 6.

[0038] In the embodiment of the present disclosure, four limiting guide openings 301 of square structure are longitudinally penetrated on the lower rotating table 3, and a push rod through hole 302 is respectively provided on the inner and outer sides of each limiting guide opening 301, and a push rod limiting opening 303 is provided above the push rod through hole 302, and the push rod limiting opening 303 is coaxial with the push rod through hole 302. Eight upper sockets 501 of circular hole structure are longitudinally penetrated on the upper surface of the upper rotating table 5, and eight ear plate placement cavities 502 are also provided on the upper surface of the upper rotating table 5. The eight ear plate placement cavities 502 are respectively located directly above the eight upper sockets 501. The lower rotating table 3 and the upper rotating table 5 are fixedly connected by the rotating table support frame 4 to form a rotating table main body, and are fixed to the rotating shaft of the driving motor 2 The rotating table is connected with a fixed connection, and is driven to rotate by a driving motor 2. A plurality of workpiece placement areas are provided. During the rotation of the rotating table, the plurality of workpieces can be controlled to pass through the welding area respectively, and the workpieces located in the welding area can be welded separately by a manipulator. While the workpiece located in the welding area is being welded, the operator can take or place the pins in other workpiece placement areas, take out the welded finished product, and install new pins and ears. The workpieces are replaced during the welding time period, which saves waiting time after welding is completed, thereby realizing continuous production. The upper socket 501 is used to install the pin, and the ear plate placement cavity 502 is used to place the ear to prevent the ear from rotating, so as to avoid affecting the welding effect due to the rotation of the ear.

[0039] In the disclosed embodiment, the positioning sleeve 6 is a split sleeve body formed by combining two sleeve bodies by screws. A sleeve positioning hole 601 is longitudinally penetrated on the positioning sleeve 6, and a positioning rod guide cavity 602 is processed inside the positioning sleeve 6. Eight sleeve positioning holes 601 in the four positioning sleeves 6 are coaxial with the eight upper sockets 501 respectively. The split positioning sleeve 6 is easy to assemble and disassemble, and it is easy to install the lifting top plate 7 and the built-in clamping block 8 inside the positioning sleeve 6, and it is also beneficial to the lubrication, maintenance and replacement of its internal parts. The pin shaft is placed through the sleeve positioning hole 601, and the pin shaft is inserted into the sleeve positioning hole 601 and the upper socket 501 to limit the radial direction of the pin shaft and keep the pin shaft vertical.

[0040] In the disclosed embodiment, the two ends of the positioning rod guide cavity 602 are respectively connected to the two sleeve positioning holes 601, and a guide cavity limit opening 603 is opened at the bottom of the positioning rod guide cavity 602. The lower end of the guide cavity limit opening 603 passes through the lower surface of the positioning sleeve 6. The positioning rod guide cavity 602 is used to guide and limit the built-in clamping block 8 to keep the built-in clamping block 8 moving straight.

[0041] When the lifting plate 7 is in the forward position, the upper end of the lifting plate 7 is welded with a round head push rod 701, and the lifting plate 7 is slidably connected to the sleeve positioning hole 601. The round head push rod 701 is slidably connected to the push rod through hole 302. The two round head push rods 701 located in the front position of the lower rotating table 3 are slidably connected to the two unloading wedge plates 103 respectively. When the rotating table rotates, the lifting plate 7 is driven to move forward, so that the spherical structure at the bottom of the round head push rod 701 passes through the unloading wedge plate 103 and moves upward with the slope of the unloading wedge plate 103, and the lifting plate 7 is controlled to move slowly upward. When the lifting plate 7 at this position is completely located in front of the workbench, the lifting plate 7 is in the highest position, and the pin shaft inside the positioning sleeve 6 is pushed upward by the lifting plate 7, so that the upper end of the pin shaft protrudes from the upper surface of the upper rotating table 5, which is convenient for the staff to remove the welded pin shaft.

[0042] Embodiment 2, on the basis of embodiment 1, the built-in clamping block 8 is slidably connected inside the positioning rod guide cavity 602, two built-in clamping blocks 8 are arranged inside the positioning rod guide cavity 602, two reset tension springs 805 are installed between the two built-in clamping blocks 8, the outer end of the built-in clamping block 8 is provided with a clamping block arc groove 801, the clamping block arc groove 801 is an arc-shaped structure, the upper edge and the lower edge of the clamping block arc groove 801 are respectively provided with an arc groove wedge edge 802, the lower surface of the built-in clamping block 8 is provided with a clamping block limiting push plate 803, the two edges of the clamping block limiting push plate 803 are processed with clamping block wedge edges 804, the clamping block limiting push plate 803 is slidably connected in the guide cavity limiting opening 603 and the limiting guide opening 301, when the rotating platform of the pin welding tooling is working, the tooling is rotated by the rotation of the rotating platform When the workpiece is transferred to the welding area, the group of pins is located at the rear end of the rotating table. At this time, the two clamping block limit push plates 803 are respectively located in front of and behind the fastening boss 102. The clamping block limit push plates 803 are limited by the fastening boss 102, so that the two built-in clamping blocks 8 inside the positioning sleeve 6 respectively apply thrust to the inside of the two sleeve positioning holes 601, and push the pins inside the sleeve positioning holes 601 to clamp them, so as to prevent the pins from moving or rotating during the welding process and affecting the welding accuracy. When the welding is completed, as the rotating table rotates, the two built-in clamping blocks 8 inside the positioning sleeve 6 are disengaged from the fastening boss 102, releasing the limit on the built-in clamping blocks 8, and then releasing the clamping of the pins, so that the pins are restored to freedom, thereby realizing the fixed-point automatic clamping and fixing function of the workpiece.

[0043] The working principle of this embodiment is as follows: first, the main body of the pin is vertically inserted from the upper socket 501, so that the lower end of the pin is inserted into the inside of the sleeve positioning hole 601, and an ear piece is installed on the upper end of the pin shaft so that the ear piece is placed in the ear plate placement cavity 502, and the drive motor 2 is started, and the drive motor 2 is controlled to rotate intermittently with a rotation period of ninety degrees. When the pin shaft located on the rotating table enters the welding area driven by the rotating table, the clamp block limiting push plate 803 is in close contact with the fastening boss 102, and the built-in clamp block 8 is limited by the fastening boss 102, so that the two built-in clamp blocks 8 inside the positioning sleeve 6 respectively apply thrust to the inside of the two sleeve positioning holes 601, and the pin shaft inside the sleeve positioning hole 601 is pushed and clamped, so as to prevent the pin shaft from moving or rotating during welding and causing damage to the welding accuracy. The welding robot is turned on to weld the workpiece in the welding area. The staff installs or removes other workpieces on the rotating table during welding. When welding is completed, as the rotating table rotates, the two built-in clamping blocks 8 inside the positioning sleeve 6 are disengaged from the fastening boss 102, releasing the limit on the built-in clamping blocks 8, and then releasing the clamping of the pin shaft, so that the pin shaft is free again. When the rotating table continues to rotate, it drives the lifting top plate 7 to enter the unloading wedge plate 103. As the rotating table rotates, the spherical structure at the bottom of the round head push rod 701 is controlled to slide toward the middle along the slope of the unloading wedge plate 103, and the lifting top plate 7 rises along the slope of the unloading wedge plate 103, and the pin shaft is automatically pushed out. The staff uses tools to take out the finished product after welding, and then continuous welding work can be carried out.

[0044] In this article, there are a few points to note:

[0045] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0046] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0047] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A movable pin welding tool, comprising a tool base (1), a driving motor (2) being fixedly connected to the tool base (1) by bolts at the bottom, a lower rotating table (3) being fixedly connected to the rotating shaft of the driving motor (2), a rotating table support frame (4) being fixedly connected to the top of the lower rotating table (3), an upper rotating table (5) being welded to the top of the rotating table support frame (4), the lower rotating table (3) being coaxial with the upper rotating table (5), the upper rotating table (5) and the lower rotating table (3) being mounted on the rotating shaft of the driving motor (2) by interference fit, characterized in that: Four positioning sleeves (6) are fixedly connected above the lower rotating platform (3); the positioning sleeves (6) are of a split structure; two lifting top plates (7) are movably connected inside the positioning sleeves (6); and two built-in clamping blocks (8) are movably connected inside the positioning sleeves (6); A limiting ring (101) with a circular ring structure is fixedly connected to the upper surface of the tooling base (1), and a fastening boss (102) with a cylindrical structure is protruded at the rear end of the limiting ring (101); Two unloading wedge plates (103) with arc-shaped structures are fixedly connected to the front of the upper surface of the tooling base (1), the two unloading wedge plates (103) are arranged in a front-to-back manner, the two unloading wedge plates (103) are cocentric with the tooling base (1), and both ends of the upper surface of the unloading wedge plates (103) are processed with slope structures; The lower rotating platform (3) is provided with four limiting guide openings (301) of a square structure extending longitudinally therethrough, each limiting guide opening (301) is provided with a push rod through hole (302) on the inner side and the outer side respectively, and a push rod limiting opening (303) is provided above the push rod through hole (302), and the push rod limiting opening (303) is coaxial with the push rod through hole (302); The upper surface of the upper rotating platform (5) is provided with eight upper sockets (501) with circular hole structures extending longitudinally therethrough. The upper surface of the upper rotating platform (5) is also provided with eight ear plate placement cavities (502), and the eight ear plate placement cavities (502) are respectively located directly above the eight upper sockets (501); The positioning sleeve (6) is a split sleeve body formed by screwing two sleeve parts together, a sleeve positioning hole (601) is longitudinally penetrated on the positioning sleeve (6), a positioning rod guide cavity (602) is processed inside the positioning sleeve (6), and eight sleeve positioning holes (601) in the four positioning sleeves (6) are coaxial with the eight upper sockets (501) respectively; The two ends of the positioning rod guide cavity (602) are respectively connected to the two sleeve positioning holes (601); a guide cavity limiting opening (603) is provided at the bottom of the positioning rod guide cavity (602); and the lower end of the guide cavity limiting opening (603) passes through the lower surface of the positioning sleeve (6); A round-headed push rod (701) is vertically welded to the lower end of the lifting top plate (7), the lifting top plate (7) is slidably connected in the socket positioning hole (601), the round-headed push rod (701) is slidably connected to the push rod through hole (302), and the two round-headed push rods (701) located in front of the lower rotating platform (3) are slidably connected to the two unloading wedge plates (103) respectively; The built-in clamping block (8) is slidably connected to the inside of the positioning rod guide cavity (602). Two built-in clamping blocks (8) are provided inside the positioning rod guide cavity (602). Two reset tension springs (805) are installed between the two built-in clamping blocks (8). The outer ends of the built-in clamping blocks (8) are provided with clamping block arc grooves (801).

2. The movable pin welding tool according to claim 1, characterized in that: The clamp block arc groove (801) is in an arc-shaped structure, and an arc groove wedge edge (802) is respectively provided on the upper edge and the lower edge of the clamp block arc groove (801). A clamp block limit push plate (803) is provided on the lower surface of the built-in clamp block (8), and clamp block wedge edges (804) are processed on both edges of the clamp block limit push plate (803). The clamp block limit push plate (803) is slidably connected in the guide cavity limit opening (603) and the limit guide opening (301).

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