Bolt welding device

Abstract

The utility model discloses a bolt welding device, which is used for fixing a bolt in a mounting hole of a workpiece through welding, and comprises a first electrode, a second electrode and a third electrode, a positioning hole and a mounting channel are formed in the second electrode, the positioning hole extends in the first direction and is used for positioning a bolt, the mounting channel extends in the second direction, one end of the mounting channel is communicated with the positioning hole, the other end of the mounting channel penetrates through the surface of the second electrode in the second direction, and the first direction is perpendicular to the second direction; and the mounting channel is configured to be suitable for enabling the bolt to be matched in the positioning hole through the mounting channel. According to the bolt welding device, the bolt can be pre-positioned when the bolt is welded, so that the perpendicularity of the bolt during welding is effectively guaranteed, and the bolt welding quality is effectively improved. In addition, the bolts can be conveniently mounted on and dismounted from the bolt welding device, so that the operation process is effectively simplified, and the bolt welding efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially is a kind of bolt welding device. BACKGROUND

[0002] In the field of automobile welding production, bolts are used as a common body standard part, commonly applied in reinforcing plate, longitudinal beam and other parts, usually a plurality of specifications of bolts are provided on a part, and the welding of bolts in the automobile industry is carried out by using a special projection welding machine.

[0003] In the prior art, the welding of bolts on vehicle parts needs to be realized on a special projection welding station and a special projection welding machine, so that the welding site occupies a large area, and the logistics and equipment costs are high.In addition, the welding quality of the bolts welded by the projection welding machine is unstable, which affects the welding effect. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a bolt welding device, which can effectively ensure the perpendicularity during bolt welding, thereby effectively improving the quality of bolt welding, and can effectively simplify the operation process of bolt welding, thereby effectively improving the efficiency of bolt welding.

[0005] According to the bolt welding device of the utility model, the bolt is fixed in the mounting hole of the workpiece by welding, and the bolt welding device comprises: a first electrode; a second electrode, the second electrode is formed with a positioning hole and a mounting channel, the positioning hole extends along a first direction to position the bolt, the mounting channel extends along a second direction, one end of the mounting channel communicates with the positioning hole and the other end penetrates the surface of the second electrode along the second direction, the first direction is perpendicular to the second direction, and the mounting channel is configured to be adapted to allow the bolt to be fitted into the positioning hole through the mounting channel.

[0006] According to the bolt welding device of the utility model, the first electrode and the second electrode are arranged in the bolt welding device, the second electrode is formed with a positioning hole and a mounting channel, the positioning hole extends along a first direction to position the bolt, the mounting channel extends along a second direction, one end of the mounting channel communicates with the positioning hole and the other end penetrates the surface of the second electrode along the second direction, the first direction is perpendicular to the second direction, and the mounting channel is configured to be adapted to allow the bolt to be fitted into the positioning hole through the mounting channel, which can pre-position the bolt during welding, thereby effectively ensuring the perpendicularity during bolt welding, and effectively improving the quality of bolt welding. In addition, the bolt can be conveniently installed and removed on the bolt welding device, thereby effectively simplifying the operation process, and effectively improving the efficiency of bolt welding.

[0007] In some embodiments, the mounting channel extends in a straight line in the radial direction of the positioning hole.

[0008] In some embodiments, the diameter of the positioning hole is configured to be greater than the nominal diameter of the bolt, and the difference between the diameter of the positioning hole and the nominal diameter of the bolt is less than or equal to 0.2 mm.

[0009] In some embodiments, the diameter of the positioning hole is equal to the width of the mounting channel in the third direction, which is perpendicular to the first direction and the second direction.

[0010] In some embodiments, both ends of the positioning hole in the first direction respectively pass through two side surfaces of the second electrode oppositely arranged in the first direction; both ends of the mounting channel in the first direction respectively pass through two side surfaces of the second electrode oppositely arranged in the first direction.

[0011] In some embodiments, the second electrode has a main body section and a connecting section arranged in the second direction and connected to each other, the positioning hole and the mounting channel are both formed on the main body section, in the first direction, the height of the connecting section is lower than the height of the main body section, and the side surface of the connecting section facing away from the first electrode is flush with the side surface of the main body section facing away from the first electrode.

[0012] In some embodiments, the first electrode comprises an electrode main body and an electrode cap, the electrode cap is detachably connected to one end of the electrode main body in the first direction towards the second electrode, and the electrode cap is adapted to abut against the bolt.

[0013] In some embodiments, the bolt welding device further comprises a first clamp, the first electrode is arranged on the first clamp; and a second clamp, the second electrode is arranged on the second clamp.

[0014] In some embodiments, the first electrode is detachably connected to the first clamp, and the second electrode is detachably connected to the second clamp.

[0015] In some embodiments, the first clamp comprises a first connecting plate and a second connecting plate arranged in a stack in the first direction, the first connecting plate and the second connecting plate cooperatively define a connecting groove open in the first direction towards the second electrode, one end of the connecting groove in the second direction passes through the first connecting plate and / or the second connecting plate, a limiting protruding rib is arranged on the opposite side wall of the connecting groove in the third direction, one end of the first electrode away from the second electrode forms a connecting block, the connecting block is slidably fitted into the connecting groove and located on the side of the limiting protruding rib towards the bottom wall of the connecting groove, and the connecting block abuts against the limiting protruding rib in the first direction.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a bolt welding device according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of a bolt welding device according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the first electrode according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the second electrode according to an embodiment of the present invention.

[0021] Figure label:

[0022] 100. Bolt welding device;

[0023] 10. First electrode; 11. Electrode body; 111. Connecting block; 12. Electrode cap;

[0024] 20. Second electrode; 201. Mounting channel; 21. Main body section; 22. Connecting section;

[0025] 30. First clamp; 31. First connecting plate; 32. Second connecting plate; 301. Connecting groove; 3011. Limiting rib;

[0026] 200. Workpiece;

[0027] 300. Bolts;

[0028] 400. First cable;

[0029] 500, Second Cable. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] The following is for reference. Figures 1-4 Description of a bolt welding device 100 according to an embodiment of the present utility model.

[0032] like Figures 1-4As shown, according to the bolt welding device 100 of the embodiment of the utility model, for fixing bolt 300 through welding in the mounting hole of workpiece 200, bolt welding device 100 includes: first electrode 10 and second electrode 20.

[0033] Second electrode 20 is formed with positioning hole and installation channel 201, positioning hole extends along the first direction (for example Figure 4 Up and down direction in) for positioning bolt 300, installation channel 201 extends along the second direction (for example Figure 4 Front and back direction in), one end of installation channel 201 communicates with positioning hole and the other end penetrates the surface of second electrode 20 along the second direction, the first direction is perpendicular to the second direction, installation channel 201 is configured to be adapted to make bolt 300 fit in positioning hole through installation channel 201.

[0034] It should be noted that, in a specific example, as Figures 1-4 Shown, the first direction is up and down direction, the second direction is front and back direction, the third direction is left and right direction, the first direction, the second direction and the third direction are perpendicular to each other.In a specific example, as Figure 4 Shown, positioning hole is arranged at the right end of second electrode 20, positioning hole extends along the up and down direction, when bolt 300 is located in positioning hole, the hole wall of positioning hole can effectively limit the movement of bolt 300.

[0035] For example Figure 4 Shown, installation channel 201 is arranged at the right end of second electrode 20, installation channel 201 extends along the front and back direction, the rear end of installation channel 201 communicates with positioning hole, and the front end of installation channel 201 extends forward and penetrates the front side of second electrode 20. Bolt 300 can be conveniently removed from positioning hole through installation channel 201.

[0036] It should be noted that, in a specific example, as Figure 4 Shown, the type of bolt 300 is face projection welding bolt, the face projection welding bolt is composed of nut, screw rod and a plurality of projection welding points, a plurality of projection welding points are arranged on the side surface of nut towards screw rod. Workpiece 200 is provided with bolt via hole corresponding to screw rod of face projection welding bolt, when welding face projection welding bolt, a plurality of projection welding points generate heat under the action of electric current to form welding, thereby realizing the connection of bolt 300 and workpiece 200.

[0037] Further, as Figure 2As shown, the first electrode 10 is connected with the spot welding gun through the first cable 400, the second electrode 20 is connected with the spot welding gun through the second cable 500, the material of the bolt 300 and the workpiece 200 is steel, and the material of the first electrode 10 and the second electrode 20 is steel. Preferably, the length of the first electrode 10 can be 200 mm, the diameter of the first electrode 10 can be 16 mm, the opening of the workpiece 200 can be 40 mm x 40 mm, the wall thickness can be 1.5 mm, and the model of the bolt 300 can be M6 x 20.

[0038] In this embodiment, when the bolt 300 is welded by the bolt welding device 100, the workpiece 200 is first placed on the second electrode 20, the bolt hole on the workpiece 200 is aligned with the positioning hole on the second electrode 20, and then the bolt 300 is inserted through the bolt hole of the workpiece 200 so that the bolt 300 is located in the positioning hole. In this way, the hole wall of the positioning hole can effectively limit the movement of the bolt 300, avoiding the shaking of the bolt 300 during welding, thereby effectively ensuring the perpendicularity of the bolt 300 during welding, and further effectively improving the quality of the bolt 300 welding.

[0039] Then, the bolt welding device 100 is powered on, and the current flows into the first electrode 10, the bolt 300, the workpiece 200 and the second electrode 20 in sequence through the first cable 400, thereby forming a complete resistance spot welding current loop. Since the resistivity of copper is much smaller than that of steel, the current heat is mainly concentrated at the contact surface position of the workpiece 200 and the bolt 300, thereby melting the end face of the bolt 300 and the workpiece 200, and further forming a nugget to weld the bolt 300 on the workpiece 200.

[0040] After the bolt 300 is welded, the workpiece 200 and the bolt 300 are removed from the bolt welding device 100 through the installation channel 201 of the second electrode 20, that is, when the workpiece 200 and the bolt 300 are removed, the bolt 300 only needs to be moved in the direction of the extension of the installation channel 201 in the horizontal plane, and then the workpiece 200 and the bolt 300 can be removed. In this way, the operation process can be effectively simplified, thereby effectively improving the welding efficiency.

[0041] According to an embodiment of the present invention, a bolt welding device 100 is provided with a first electrode 10 and a second electrode 20. The second electrode 20 has a positioning hole and an installation channel 201. The positioning hole extends along a first direction for positioning a bolt 300. The installation channel 201 extends along a second direction, with one end communicating with the positioning hole and the other end penetrating the surface of the second electrode 20 along the second direction. The first direction is perpendicular to the second direction. The installation channel 201 is configured to allow the bolt 300 to fit into the positioning hole via the installation channel 201. This allows for pre-positioning of the bolt 300 during welding, effectively ensuring the perpendicularity of the bolt 300 during welding and thus effectively improving the quality of the bolt welding. Furthermore, it facilitates the installation and removal of the bolt 300 on the bolt welding device 100, thereby simplifying the operation process and improving the efficiency of bolt welding.

[0042] In a specific example, such as Figure 4 As shown, the mounting channel 201 extends in a straight line radially from the positioning hole. In a specific example, as... Figure 4 As shown, the mounting channel 201 extends in a straight line in the front-to-back direction. That is, after the bolt 300 is welded to the workpiece 200, the bolt 300 moves forward in a straight line through the mounting channel 201 and eventually moves out of the mounting channel 201 of the second electrode 20. This effectively simplifies the movement process of the bolt 300 and thus effectively improves the convenience of operation.

[0043] This embodiment, by setting the mounting channel 201 to extend in a straight line in the radial direction of the positioning hole, can not only effectively simplify the structural construction of the mounting channel 201, but also effectively simplify the operation process of removing the bolt 300 from the mounting channel 201, thereby effectively improving the convenience of removing the bolt 300.

[0044] In one specific example, the diameter of the locating hole is configured to be greater than the nominal diameter of bolt 300, and the difference between the diameter of the locating hole and the nominal diameter of bolt 300 is less than or equal to 0.2 mm. For example, the difference between the diameter of the locating hole and the nominal diameter of bolt 300 can be 0.2 mm, 0.16 mm, 0.12 mm, 0.08 mm, and 0.04 mm.

[0045] In this embodiment, by setting the diameter of the positioning hole to be greater than the nominal diameter of the bolt 300, and the difference between the diameter of the positioning hole and the nominal diameter of the bolt 300 is less than or equal to 0.2mm, not only can the bolt 300 be smoothly inserted into the positioning hole, but also the bolt 300 can be prevented from shaking too much in the positioning hole, thereby effectively fixing the bolt 300 and thus effectively improving the positioning accuracy of the bolt 300.

[0046] In one specific example, as shown in Figure 4 the diameter of the positioning hole is equal to the width of the mounting channel 201 in the third direction (e.g. the left-right direction) which is perpendicular to the first direction and the second direction. It should be noted that in one specific example, as shown in Figure 4 the first direction is the up-down direction, the second direction is the front-back direction, and the third direction is the left-right direction, and the first direction, the second direction and the third direction are perpendicular to each other. Figures 1-4

[0047] When the bolt 300 is removed from the positioning hole and the mounting channel 201 after completing the welding with the workpiece 200, since the diameter of the positioning hole is equal to the width of the mounting channel 201 in the left-right direction, the bolt 300 can be safely and smoothly transferred from the positioning hole to the mounting channel 201, and then quickly removed from the second electrode 20 through the mounting channel 201.

[0048] By setting the diameter of the positioning hole to be equal to the width of the mounting channel 201 in the third direction which is perpendicular to the first direction and the second direction, the embodiment can effectively improve the smoothness of the bolt 300 being removed from the second electrode 20, avoid the situation that the bolt 300 is stuck or needs to be adjusted when being removed, and thus can effectively simplify the process of the workpiece 200 and the bolt 300 being removed from the second electrode 20.

[0049] In one specific example, as shown in Figure 2 and Figure 4 the two ends of the positioning hole in the first direction respectively pass through the two side surfaces of the second electrode 20 which are oppositely arranged in the first direction, and the two ends of the mounting channel 201 in the first direction respectively pass through the two side surfaces of the second electrode 20 which are oppositely arranged in the first direction. For example, as shown in Figure 4 the two ends of the positioning hole in the up-down direction respectively pass through the upper side surface and the lower side surface of the second electrode 20, and the two ends of the mounting channel 201 in the up-down direction respectively pass through the upper side surface and the lower side surface of the second electrode 20.

[0050] By setting the two ends of the positioning hole in the first direction to respectively pass through the two side surfaces of the second electrode 20 which are oppositely arranged in the first direction, and setting the two ends of the mounting channel 201 in the first direction to respectively pass through the two side surfaces of the second electrode 20 which are oppositely arranged in the first direction, the embodiment can effectively simplify the structural configuration of the positioning hole and the mounting channel 201, and thus effectively simplify the structural configuration of the second electrode 20, and further simplify the design and manufacturing process of the second electrode 20, so as to effectively reduce the production cost.

[0051] In one specific example, as shown in Figure 4 ​As shown in the figure, the second electrode 20 has a body section 21 and a connecting section 22 arranged in the second direction and connected with each other, the positioning hole and the mounting channel 201 are formed on the body section 21, in the first direction, the height of the connecting section 22 is lower than the height of the body section 21, and the side surface of the connecting section 22 away from the first electrode 10 is flush with the side surface of the body section 21 away from the first electrode 10.

[0052] In a specific example, as shown in the figure, Figure 4 As shown in the figure, the body section 21 of the second electrode 20 is arranged on the right side of the connecting section 22, the positioning hole and the mounting channel 201 are formed on the body section 21, and the two ends of the positioning hole and the mounting channel 201 penetrate the upper side surface and the lower side surface of the body section 21 in the up-down direction. In the up-down direction, the upper side surface of the connecting section 22 is lower than the upper side surface of the body section 21, the lower side surface of the connecting section 22 is flush with the lower side surface of the body section 21, and further, the width dimension of the connecting section 22 and the body section 21 in the front-rear direction is the same. That is, in the front-rear direction, the projection shape of the second electrode 20 is L-shaped.

[0053] Preferably, the length dimension of the second electrode 20 in the left-right direction can be 50 mm, the width dimension of the body section 21 and the connecting section 22 in the front-rear direction can be 25 mm, the height dimension of the body section 21 in the up-down direction can be 25 mm, and the height dimension of the connecting section 22 in the up-down direction can be 15 mm.

[0054] The embodiment can effectively ensure the structural strength of the second electrode 20 and effectively reduce the material of the second electrode 20, thereby effectively reducing the weight of the second electrode 20, by arranging the body section 21 and the connecting section 22 arranged in the second direction and connected with each other in the second electrode 20, the positioning hole and the mounting channel 201 are formed on the body section 21, in the first direction, the height of the connecting section 22 is lower than the height of the body section 21, and the side surface of the connecting section 22 away from the first electrode 10 is flush with the side surface of the body section 21 away from the first electrode 10.

[0055] In a specific example, as shown in the figure, Figure 2 and Figure 3 As shown in the figure, the first electrode 10 includes an electrode body 11 and an electrode cap 12, the electrode cap 12 is detachably connected to the end of the electrode body 11 in the first direction towards the second electrode 20, and the electrode cap 12 is adapted to abut against the bolt 300.

[0056] For example Figure 2 and Figure 3As shown, the electrode cap 12 is detachably connected to the lower end of the electrode body 11, and further, the material of the electrode cap 12 can be copper, so that the electrode cap 12 can effectively transmit current and provide the necessary pressure for the bolt 300 during the welding process of the bolt 300. In addition, when the electrode cap 12 needs to be repaired or replaced, the detachable connection of the electrode cap 12 and the electrode body 11 can facilitate the maintenance of the electrode cap 12. Preferably, the electrode cap 12 can be a large spherical electrode cap 12.

[0057] The present embodiment sets the electrode body 11 and the electrode cap 12 in the first electrode 10, and the electrode cap 12 is detachably connected to one end of the electrode body 11 facing the second electrode 20 in the first direction, and the electrode cap 12 is adapted to abut against the bolt 300, not only enabling the electrode cap 12 to effectively transmit current during the welding process of the bolt 300, but also effectively improving the convenience of maintaining the electrode cap 12, thereby effectively improving the maintenance efficiency of the electrode cap 12.

[0058] In one specific example, as shown in Figure 1 and Figure 2 The bolt welding device 100 further comprises a first clamp 30 and a second clamp.

[0059] The first electrode 10 is arranged on the first clamp 30, and the second electrode 20 is arranged on the second clamp. For example, the first clamp 30 can be a fixed plate, and the second clamp can be a support plate, and further, the first clamp 30 can be connected to various devices such as robots, clamp rocker arms, manual handles, etc., so as to effectively realize manual welding or automatic welding, and the second electrode 20 can be conveniently assembled on the support plate, so as to effectively improve the assembly efficiency of the second clamp.

[0060] It should be noted that when manual welding is used, a bolt 300 copper sleeve can be sleeved on the nut of the bolt 300, and the bolt 300 copper sleeve hole is arranged in the bolt 300 copper sleeve, and the diameter of the bolt 300 copper sleeve hole is less than or equal to the diameter of the bolt 300 by 1mm. In addition, a detection hole can be designed on the bolt 300 copper sleeve, and a sensor is used to detect whether the bolt 300 is missing.

[0061] In one specific example, as shown in Figure 1 and Figure 2 The positions of the first clamp 30 and the second clamp in the up-down direction are adjustable, the positions of the first clamp 30 and the second clamp in the front-rear direction are adjustable, and the positions of the first clamp 30 and the second clamp in the left-right direction are adjustable. When welding the bolt 300, the positions of the first clamp 30 and the second clamp can be adjusted as needed, so that the first electrode 10 and the second electrode 20 can be effectively moved.

[0062] For example, for the bolt 300 welding of a large piece such as a longitudinal beam, the operator does not need to move the longitudinal beam, but only needs to move the first clamp 30 and the second clamp to make the first electrode 10 and the second electrode 20 be located at a suitable welding position, and then the welding work is carried out, so that the labor intensity can be effectively reduced, the logistics cost can be saved, and the welding speed can be effectively improved. In a specific example, the bolt welding device 100 of the application can save 1 stud 300 projection welding operator, reduce the labor cost by about 120,000 yuan, save the logistics cost by about 20,000 yuan / year, and effectively improve the stud 300 welding quality. The stud 300 is welded by the stud welding gun, and the comprehensive cost of the stud welding gun can be controlled to 0.2 yuan per stud.

[0063] It should be noted that in the conventional technology, a stud welding factory generally plans a special stud projection welding station for stud welding. One stud projection welding machine needs to be equipped for one specification of stud projection welding. A domestic projection welding machine costs about 150-200 thousand yuan, and an imported brand costs as high as 250-300 thousand yuan. The entire factory needs to invest millions of yuan. In addition, the projection welding machine also needs to occupy the factory building area. Compared with the conventional technology, the stud welding device 100 of the application can be integrated on the first clamp 30 and the second clamp, and the welding clamp is a very mature product in the welding workshop, so that the factory process planning can be facilitated, thereby effectively reducing the production cost.

[0064] In the embodiment, the first electrode 10 is arranged on the first clamp 30, and the second electrode 20 is arranged on the second clamp, so that the first electrode 10 and the second electrode 20 can be effectively fixed on the first clamp 30 and the second clamp respectively, thereby effectively improving the stability of the first electrode 10 and the second electrode 20 during the stud 300 welding, preventing the position of the first electrode 10 or the second electrode 20 from deviating due to vibration or external force during the welding process, and further effectively ensuring the welding quality.

[0065] In a specific example, as shown in Figure 1 and Figure 2 , the first electrode 10 is detachably connected with the first clamp 30, and the second electrode 20 is detachably connected with the second clamp. When different specifications of studs 300 need to be welded, different specifications of second electrodes 20 can be selected and installed on the second clamp, without the need to replace the entire stud welding device 100. Further, for different specifications of second electrodes 20, the sizes of the positioning holes and the installation channel 201 are different. Therefore, the applicability and flexibility of the stud welding device 100 can be effectively improved.

[0066] When the first electrode 10 and the second electrode 20 need to be repaired or replaced, the first electrode 10 and the second electrode 20 can be respectively detached from the first clamp 30 and the second clamp for maintenance without replacing the entire bolt welding device 100, thereby effectively improving the convenience of maintenance and effectively improving the maintenance efficiency.

[0067] In one specific example, as shown in Figure 2 and Figure 3 The first clamp 30 includes: a first connecting plate 31 and a second connecting plate 32 arranged in a first direction, the first connecting plate 31 and the second connecting plate 32 cooperatively define a connecting groove 301 open to the second electrode 20 in the first direction, one end of the connecting groove 301 in a second direction penetrates the first connecting plate 31 and / or the second connecting plate 32, the connecting groove 301 is provided with a limiting rib 3011 on the opposite side walls in a third direction, one end of the first electrode 10 away from the second electrode 20 is formed with a connecting block 111, the connecting block 111 is slidably fitted in the connecting groove 301 and located on one side of the limiting rib 3011 toward the bottom wall of the connecting groove 301, and the connecting block 111 abuts against the limiting rib 3011 in the first direction.

[0068] For example, one end of the connecting groove 301 in the front-rear direction penetrates the first connecting plate 31; for another example, one end of the connecting groove 301 in the front-rear direction penetrates the second connecting plate 32; for another example, one end of the connecting groove 301 in the front-rear direction penetrates the first connecting plate 31 and the second connecting plate 32. In one specific example, as shown in Figure 2 and Figure 3 The first connecting plate 31 is arranged on the upper side of the second connecting plate 32, and the front end of the connecting groove 301 in the front-rear direction penetrates the second connecting plate 32, the connecting groove 301 is open downward, the limiting rib 3011 is arranged on the left side wall and the right side wall of the connecting groove 301, the upper end of the first electrode 10 is provided with the connecting block 111, when the connecting block 111 is installed in the connecting groove 301, the connecting block 111 can slide in the connecting groove 301 in the front-rear direction, and the connecting block 111 is located on the upper side of the limiting rib 3011, and the connecting block 111 abuts against the limiting rib 3011 in the up-down direction.

[0069] Further, the connecting mode between the first connecting plate 31 and the second connecting plate 32 can adopt bolt 300 connection, the connecting mode between the connecting block 111 and the first connecting plate 31 can adopt bolt 300 connection, and the material of the first connecting plate 31 and the second connecting plate 32 is steel material, so as to effectively fix the connecting block 111 on the first clamp 30, and further effectively fix the first electrode 10, thereby effectively improving the stability of the first electrode 10. Preferably, the size of the first connecting plate 31 can be 50mm×20mm×5mm, and the size of the second connecting plate 32 can be 50mm×20mm×5mm.

[0070] The embodiment is characterized in that the first connecting plate 31 and the second connecting plate 32 arranged in a stacked manner in the first direction are arranged in the first clamp 30, the first connecting plate 31 and the second connecting plate 32 cooperatively define a connecting groove 301 which is open toward the second electrode 20 in the first direction, one end of the connecting groove 301 in the second direction penetrates the first connecting plate 31 and / or the second connecting plate 32, the connecting groove 301 is provided with a limiting convex rib 3011 on the opposite side wall in the third direction, one end of the first electrode 10 away from the second electrode 20 is formed with a connecting block 111, the connecting block 111 is slidably fitted in the connecting groove 301 and located at one side of the limiting convex rib 3011 toward the bottom wall of the connecting groove 301, and the connecting block 111 abuts against the limiting convex rib 3011 in the first direction, so that the first electrode 10 can be effectively fixed to the first clamp 30, the stability and reliability of the first electrode 10 are effectively improved, and the installation process of the first electrode 10 on the first clamp 30 is effectively simplified, so that the assembly efficiency is effectively improved.

[0071] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0072] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0073] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0074] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bolt welding device for fixing bolts into mounting holes of workpieces by welding, characterized in that, The bolt welding device includes: First electrode; The second electrode has a positioning hole and a mounting channel formed thereon. The positioning hole extends along a first direction for positioning the bolt. The mounting channel extends along a second direction, with one end communicating with the positioning hole and the other end penetrating the surface of the second electrode along the second direction. The first direction is perpendicular to the second direction. The mounting channel is configured to allow the bolt to engage with the positioning hole via the mounting channel.

2. The bolt welding device according to claim 1, characterized in that, The mounting channel extends in a straight line in the radial direction of the positioning hole.

3. The bolt welding device according to claim 1, characterized in that, The diameter of the positioning hole is configured to be larger than the nominal diameter of the bolt, and the difference between the diameter of the positioning hole and the nominal diameter of the bolt is less than or equal to 0.2 mm.

4. The bolt welding device according to claim 1, characterized in that, The diameter of the positioning hole is equal to the width of the mounting channel in a third direction, which is perpendicular to the first direction and the second direction.

5. The bolt welding device according to claim 1, characterized in that, The positioning holes penetrate the two opposite surfaces of the second electrode arranged in the first direction at their respective ends in the first direction. The mounting channel passes through both ends of the second electrode on its two oppositely arranged surfaces in the first direction.

6. The bolt welding device according to claim 1, characterized in that, The second electrode has a main body segment and a connecting segment arranged and connected in a second direction. The positioning hole and the mounting channel are both formed on the main body segment. In the first direction, the height of the connecting segment is lower than the height of the main body segment, and the side surface of the connecting segment facing away from the first electrode is flush with the side surface of the main body segment facing away from the first electrode.

7. The bolt welding device according to claim 1, characterized in that, The first electrode includes an electrode body and an electrode cap, the electrode cap being detachably connected to one end of the electrode body facing the second electrode in the first direction, and the electrode cap being adapted to abut against the bolt.

8. The bolt welding device according to claim 1, characterized in that, Also includes: A first clamp, wherein the first electrode is disposed on the first clamp; The second clamp, on which the second electrode is disposed.

9. The bolt welding device according to claim 8, characterized in that, The first electrode is detachably connected to the first clamp, and the second electrode is detachably connected to the second clamp.

10. The bolt welding device according to claim 8, characterized in that, The first fixture includes: a first connecting plate and a second connecting plate stacked in the first direction, the first connecting plate and the second connecting plate cooperating to define a connecting groove that opens toward the second electrode in the first direction, one end of the connecting groove in the second direction passing through the first connecting plate and / or the second connecting plate, and the connecting groove having limiting ribs on opposite sidewalls in the third direction. A connecting block is formed at the end of the first electrode away from the second electrode. The connecting block is slidably fitted into the connecting groove and located on the side of the limiting rib facing the bottom wall of the connecting groove. The connecting block and the limiting rib abut against each other in the first direction.

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