Lower fork fixing and welding die

Abstract

The utility model relates to the technical field of electric bicycle production and processing, in particular to a lower fork fixing and welding die. The lower fork fixing and welding die comprises a base, the two sides of the base are provided with a first fixing block and a first limiting assembly respectively, the first fixing block is provided with a limiting groove structure used for containing a lower fork pipe and a mud plate piece, and the base is provided with a pressing assembly. According to the utility model, the lower fork tube welded and fixed with the fork hook in the lower fork is placed in the limiting groove structure, and meanwhile, the fork hook is positioned through the first limiting assembly, so that the lower fork tube welded and fixed with the fork hook is limited in the limiting groove structure, and then a mud plate sheet is placed in the limiting groove structure; the pressing assembly presses the mud plate piece so that the mud plate piece can be fixed in the limiting groove structure, then the positions of the mud plate piece and the lower fork pipe are fixed, the lower fork pipe and the mud plate piece do not need to be manually fixed, and the welded lower fork is high in size precision and small in error.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle manufacturing and processing technology, specifically to a lower fork fixing welding mold. Background Technology

[0002] Electric bicycles include left and right chainstays, each of which consists of mudguards, chainstay tubes, and fork hooks.

[0003] Currently, the general procedure is to first weld the fork hook and the lower fork tube together. Then, the mudplate and the welded lower fork tube and fork hook are placed in a traditional mold. The traditional mold includes a horizontally placed base with a U-shaped groove for placing the lower fork tube. Positioning pins are symmetrically connected to both sides of the base. The lower fork tube is placed into the U-shaped groove, and then the two holes of the mudplate are aligned with the positioning pins and placed on the surface of the base. After being manually fixed in place, the lower fork tube and mudplate are spot welded together. Then, the entire lower fork is manually welded using an argon arc welding machine in the next process.

[0004] Because the aforementioned mold requires workers to manually fix the position of the lower fork tube and mud plate when welding them, the position may shift during spot welding, resulting in low dimensional accuracy and large dimensional error of the welded lower fork. Utility Model Content

[0005] (I) The problem to be solved by this utility model is: how to fix the lower fork pipe and mud plate to improve the welding accuracy.

[0006] (II) Technical Solution

[0007] This utility model provides a lower fork fixing welding mold for fixing the lower fork. The lower fork includes mud plate, lower fork tube and fork hook. The fork hook and the lower fork tube are welded and fixed. It includes a base. The two sides of the base are respectively provided with a first fixing block and a first limiting component.

[0008] The first fixing block is provided with a limiting groove structure for placing the lower fork tube and the mud plate;

[0009] The base is provided with a clamping component, which is used to fix the mud plate in the limiting groove structure.

[0010] The first limiting component is used to position the fork hook so that the lower fork tube is limited within the limiting groove structure.

[0011] According to one embodiment of the present invention, the limiting groove structure includes a positioning groove and a U-shaped groove that are connected to each other;

[0012] The U-shaped groove is used to place the lower fork tube;

[0013] The positioning groove is used to place the mud slab.

[0014] According to one embodiment of the present invention, the base includes a base plate and a mounting plate. The base plate is connected to the mounting plate via a support plate. The mounting plate has a mounting surface, and an angle is formed between the mounting surface and a vertical surface. The angle is between 10 and 30 degrees.

[0015] According to one embodiment of the present invention, the clamping assembly includes a first clamping member and two second clamping members;

[0016] The two second clamping components are respectively located on both sides of the first clamping component, and each second clamping component is provided with a first fixing block between it and the first clamping component;

[0017] The first clamping member and the two second clamping members are each connected to the mounting plate via a driving member;

[0018] The first clamping component includes a first connecting plate and two first pressure rods;

[0019] The second clamping member includes a second connecting plate and a second pressure bar;

[0020] The first pressure rod and the second pressure rod correspond one-to-one, and the first pressure rod and the second pressure rod cooperate to fix the mud plate in the positioning groove.

[0021] According to one embodiment of the present invention, the driving component includes a cylinder;

[0022] The fixed end of the cylinder is detachably connected to the mounting plate, and the first connecting plate and the second connecting plate are respectively connected to the pushing end of one of the cylinders.

[0023] According to one embodiment of the present invention, first positioning pins are symmetrically arranged on the first fixing block, and each first positioning pin is connected to the first fixing block through a first locking member. The first positioning pin is used to limit the mud plate in the positioning groove.

[0024] The first fixing block is slidably connected to the mounting plate, and the first fixing block is fixed to the mounting plate by a first fastener.

[0025] According to one embodiment of the present utility model, the first locking member includes a first threaded post, and the first fixing block is provided with a first mounting groove and a first threaded groove that are connected to each other, and the first threaded post is screwed into the first threaded groove.

[0026] The axial direction of the first mounting groove is perpendicular to the axial direction of the first threaded groove;

[0027] One end of the first positioning pin is located in the first mounting groove, and the other end is located in the positioning groove.

[0028] According to one embodiment of the present invention, the first limiting component includes a second fixing block and a third fixing block disposed on the mounting plate;

[0029] The second fixing block, the third fixing block, and the first fixing block correspond one-to-one;

[0030] The upper surfaces of the second fixing block and the third fixing block are located on the same plane;

[0031] A second positioning pin is connected to the second fixing block via a second locking member, and the second positioning pin is used to position the fork hook.

[0032] According to one embodiment of the present invention, the second fixing block is slidably connected to the mounting plate, and the second fixing block is fixed to the mounting plate by a second fastener.

[0033] According to one embodiment of the present invention, a control handle is provided on one side of the base, and the control handle is electrically connected to the cylinder.

[0034] The beneficial effects of this utility model are:

[0035] While the lower fork tube, which is welded and fixed to the fork hook, is placed into the limiting groove structure, the fork hook is positioned by the first limiting component, so that the lower fork tube welded and fixed to the fork hook is limited in the limiting groove structure. Then, the mud plate is placed into the limiting groove structure, and the pressing component presses the mud plate to fix it in the limiting groove structure, thereby fixing the position of the mud plate and the lower fork tube. There is no need to manually fix the lower fork tube and the mud plate. The welded lower fork has high dimensional accuracy and small error. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 A three-dimensional schematic diagram of the lower fork fixing welding mold provided in an embodiment of this utility model;

[0038] Figure 2 Provided for the embodiments of this utility model Figure 1 An enlarged schematic diagram of part A in the middle;

[0039] Figure 3 A three-dimensional schematic diagram of the lower fork fixed to the lower fork fixing welding mold provided for an embodiment of this utility model;

[0040] Figure 4 A side view of the lower fork fixed to the lower fork fixing welding mold provided for an embodiment of this utility model;

[0041] Figure 5 A perspective view of the first fixing block provided in an embodiment of this utility model.

[0042] Icons: 1. Base; 101. Base plate; 102. Mounting plate; 103. Support plate; 104. First strip hole; 105. Second strip hole; 106. Third strip hole; 2. First fixing block; 201. First mounting groove; 202. First threaded groove; 3. Positioning groove; 4. U-shaped groove; 5. First connecting plate; 6. First pressure rod; 7. Second connecting plate; 8. Second pressure rod; 9. Cylinder; 10. First connecting block; 11. First positioning pin; 12. Second fixing block; 13. Third fixing block; 14. Second positioning pin; 15. Second threaded post; 16. Control handle. Detailed Implementation

[0043] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] like Figures 1-5 As shown, one embodiment of this utility model provides a lower fork fixing welding mold for fixing the lower fork. The lower fork includes mud plate, lower fork tube and fork hook, the fork hook and lower fork tube are welded and fixed, including base 1, and a first fixing block 2 and a first limiting component are respectively provided on both sides of the base 1.

[0045] The first fixing block 2 is provided with a limiting groove structure for placing the lower fork tube and mud plate;

[0046] A clamping assembly is provided on the base 1, which is used to fix the mud plate in the limiting groove structure;

[0047] The first limiting component is used to position the fork hook so that the lower fork tube is limited within the limiting groove structure.

[0048] It should be noted that the mudplate is welded to the side wall of the lower fork pipe.

[0049] While the lower fork tube, which is welded and fixed to the fork hook, is placed into the limiting groove structure, the fork hook is positioned by the first limiting component, so that the lower fork tube welded and fixed to the fork hook is limited in the limiting groove structure. Then, the mud plate is placed into the limiting groove structure, and the pressing component presses the mud plate to fix it in the limiting groove structure, thereby fixing the position of the mud plate and the lower fork tube. There is no need to manually fix the lower fork tube and the mud plate. The welded lower fork has high dimensional accuracy and small error.

[0050] Furthermore, by fixing the lower fork tube and mud plate, the fixed welding mold can be placed on the robot operating table, and the robot can directly weld it in one go, replacing manual spot welding and welding by argon arc welding machine. The number of processes is reduced, the efficiency is improved, and the robot welding has better precision and is less prone to deformation during robot welding.

[0051] According to one embodiment of the present invention, the limiting groove structure includes a positioning groove 3 and a U-shaped groove 4 that are connected to each other;

[0052] U-shaped groove 4 is used to place the lower fork tube;

[0053] Positioning groove 3 is used to place mud slabs.

[0054] The depth of the U-shaped groove 4 is equal to the diameter of the lower fork tube. The lower fork tube is placed in the U-shaped groove 4, and then the mud plate is placed into the positioning groove 3. The mud plate contacts the lower fork tube, the pressing component fixes the mud plate, and the first limiting component fixes the fork hook, thereby fixing the lower fork tube and ensuring that the welding position between the mud plate and the lower fork tube remains unchanged, thus improving the welding accuracy.

[0055] The U-shaped groove 4 includes a connected arc-shaped groove and a straight groove. When the lower fork tube is placed in place, the side wall of the lower fork tube fits against the inner wall of the arc-shaped groove. The diameter of the arc-shaped groove is equal to the width of the straight groove, which can restrict the lower fork tube from swaying left and right.

[0056] The width of the positioning groove 3 is 0.01mm larger than the width of the clay plate, so that the clay plate will not move along the width direction of the positioning groove 3 after it is placed in.

[0057] According to one embodiment of the present invention, the base 1 includes a base plate 101 and a mounting plate 102. The base plate 101 is connected to the mounting plate 102 by at least one support plate 103. The mounting plate 102 has a mounting surface, and an angle is formed between the mounting surface and the vertical surface, with the angle being between 10 and 30 degrees.

[0058] Preferably, the included angle is 15 degrees. Setting the included angle between the mounting surface and the vertical plane to 15 degrees allows the robotic welding gun to better weld the workpiece weld seam, resulting in a fuller weld and reducing the probability of welding defects.

[0059] According to one embodiment of the present invention, the clamping assembly includes a first clamping member and two second clamping members;

[0060] Two second clamping components are located on both sides of the first clamping component, and a first fixing block 2 is provided between each second clamping component and the first clamping component;

[0061] The first clamping member and the two second clamping members are each connected to the mounting plate 102 via a driving member;

[0062] The first clamping component includes a first connecting plate 5 and two first clamping rods 6;

[0063] The second clamping component includes a second connecting plate 7 and a second pressure bar 8;

[0064] The first pressure rod 6 and the second pressure rod 8 correspond one-to-one. The first pressure rod 6 and the second pressure rod 8 work together to fix the mud plate in the positioning groove 3.

[0065] According to one embodiment of the present invention, the driving component includes a cylinder 9;

[0066] The fixed end of the cylinder 9 is detachably connected to the mounting plate 102, and the first connecting plate 5 and the second connecting plate 7 are respectively connected to the pushing end of one of the cylinders 9.

[0067] The bottom of the cylinder 9, which is connected to the second connecting plate 7, is connected to the first connecting block 10. The first connecting block 10 is fixed to the mounting plate 102 by the fourth fastener. The fourth fastener has the same structure and adjustment method as the first fastener, so it will not be described in detail.

[0068] The bottom of the cylinder 9, which is connected to the first connecting plate 5, is connected to a second connecting block. The second connecting block has a sliding hole, and the mounting plate 102 has a third sliding groove. The second connecting block is slidably connected in the third sliding groove. The third sliding groove has multiple through holes. The fixing bolt passes through the sliding hole and the through hole in sequence and is screwed to the fixing nut to fix the second connecting block to the mounting plate 102.

[0069] According to one embodiment of the present invention, a control handle 16 is provided on one side of the base 1, and the control handle 16 is electrically connected to the cylinder 9.

[0070] First, while the lower fork tube is placed into the U-shaped groove 4, the second positioning pin 14 is inserted into one hole of the fork hook. The two sides of the fork hook overlap the upper surfaces of the second fixing block 12 and the third fixing block 13, respectively, so that the lower fork tube is fixed in the U-shaped groove 4. Then, the mud plate is placed into the positioning groove 3, and the lower surface of the mud plate contacts the bottom wall of the positioning groove 3. The two first positioning pins 11 on the positioning groove 3 are respectively inserted into the two holes of the mud plate to limit the positioning groove 3. By manually adjusting the control handle 16, the first pressure rod 6 and the second pressure rod 8 are pressed down simultaneously under the drive of their respective cylinders 9, fixing the mud plate in the positioning groove 3, so that the relative position between the mud plate and the lower fork tube does not change, thus improving the subsequent welding accuracy.

[0071] like Figure 3 As shown, by setting the first clamping component and two second clamping components, the two first fixing blocks 2, the two second fixing blocks 12 and the two third fixing blocks 13 can simultaneously fix the left and right lower forks, which facilitates welding with the machine welding gun and improves work efficiency.

[0072] Of course, in this embodiment, only one set of the first clamping component can be provided. In this case, the lower left fork or the lower right fork can be welded and fixed. The purpose has not deviated from the design concept of this utility model. Therefore, it should fall within the protection scope of this utility model.

[0073] According to one embodiment of the present invention, first positioning pins 11 are symmetrically arranged on the first fixing block 2. Each first positioning pin 11 is connected to the first fixing block 2 through a first locking member. The first positioning pin 11 is used to limit the mud plate in the positioning groove 3.

[0074] The first fixing block 2 is slidably connected to the mounting plate 102, and the first fixing block 2 is fixed to the mounting plate 102 by the first fastener.

[0075] The two first positioning pins 11 on each first fixing block 2 are located on both sides of the U-shaped groove 4 opened on the first fixing block 2.

[0076] The first fixing block 2 has a protrusion on the side near the mounting plate 102. The mounting plate 102 has a first sliding groove. The protrusion is slidably connected in the first sliding groove, thereby realizing the sliding connection between the first fixing block 2 and the mounting plate 102. The first fastener includes a first locking bolt. The mounting plate 102 has a first strip hole 104. The first locking bolt passes through the first strip hole 104 and is screwed to the first fixing block 2. By tightening the first locking bolt, the distance from the head of the first locking bolt to the first fixing block 2 is reduced, thereby fixing the first fixing block 2 to the mounting plate 102.

[0077] Preferably, the first positioning pin 11 includes a cylinder and a cone connected together. The diameter of the cone at one end near the cylinder is larger than the diameter at the other end, and the maximum diameter of the cone is equal to the diameter of the cylinder. This arrangement facilitates the placement of the clay slab. The second positioning pin 14 has the same structure as the first positioning pin 11.

[0078] According to one embodiment of the present invention, the first locking member includes a first threaded post, and the first fixing block 2 is provided with a first mounting groove 201 and a first threaded groove 202 that are connected to each other, and the first threaded post is screwed into the first threaded groove 202.

[0079] The axial direction of the first mounting groove 201 is perpendicular to the axial direction of the first threaded groove 202;

[0080] One end of the first positioning pin 11 is located in the first mounting groove 201, and the other end is located in the positioning groove 3.

[0081] Insert the first locating pin 11 into the corresponding first mounting groove 201, and screw the first threaded post so that the first threaded post tightly abuts against the side wall of the first locating pin 11, thereby fixing it into the first mounting groove 201. This facilitates the installation and removal of the first locating pin 11, and allows adjustment of the length of the first locating pin 11 protruding from the first mounting groove 201, thus better positioning the mud plate.

[0082] The first locking element can also be in other forms. For example, a screw hole is provided on the side wall of the first positioning pin 11. In this case, the diameter of the first threaded groove 202 is larger than the diameter of the first threaded post. The first threaded post is passed through the first threaded groove 202 and screwed to the first positioning pin 11. By screwing the first threaded post, the distance from the end of the first threaded post away from the first positioning pin 11 to the side wall of the first positioning pin 11 is reduced, and the first positioning pin 11 is fixed. Its purpose has not deviated from the design concept of this utility model. Therefore, it should fall within the protection scope of this utility model.

[0083] According to one embodiment of the present invention, the first limiting component includes a second fixing block 12 and a third fixing block 13 disposed on the mounting plate 102;

[0084] The second fixing block 12, the third fixing block 13 and the first fixing block 2 correspond one-to-one;

[0085] The upper surface of the second fixing block 12 and the upper surface of the third fixing block 13 are located on the same plane;

[0086] The second fixing block 12 is connected to the second positioning pin 14 by the second locking member. The second positioning pin 14 is used to position the fork hook.

[0087] The lower fork tube is placed into the limiting groove structure. The U-shaped groove 4 and the second positioning pin 14 cooperate to restrict the movement of the lower fork tube along its length. Then, the mud plate is placed in the positioning groove 3 to block the opening of the U-shaped groove 4. The two first positioning pins 11 limit the mud plate. The clamping assembly clamps the positioning groove 3, so that the positioning groove 3 is fixed in the limiting groove structure. At the same time, the lower fork tube cannot move along the axis of the second positioning pin 14, thus fixing the lower fork tube in the U-shaped groove 4, thereby fixing the mud plate and the lower fork tube and improving the subsequent welding accuracy.

[0088] The second locking component includes a second threaded post 15. The second fixing block 12 has a second mounting groove and a second threaded groove that are connected to each other. The axis of the second mounting groove and the axis of the second threaded groove are perpendicular to each other. The second threaded post is screwed into the second threaded groove. By turning the second threaded post, one end of it abuts against the second positioning pin 14, thereby fixing the second positioning pin 14 onto the second fixing block 12.

[0089] Furthermore, a third positioning pin can be detachably connected to the third fixing block 13. The third positioning pin can be inserted into another hole in the fork hook, working in conjunction with the second positioning pin 14 to position the fork hook, resulting in a better fixing effect. The third fixing block 13 can also use a strong magnet to firmly attract the fork hook, improving the retention effect.

[0090] The axis direction of the first locating pin 11 is the same as that of the second locating pin 14.

[0091] According to one embodiment of the present invention, the second fixing block 12 is slidably connected to the mounting plate 102, and the second fixing block 12 is fixed on the mounting plate 102 by a second fastener.

[0092] The mounting plate 102 has a second sliding groove and a second strip hole 105 that are connected to each other. One end of the second fixing block 12 is slidably connected in the second sliding groove. The second fastener is a second locking bolt, which passes through the second strip hole 105 and is screwed to the second fixing block 12.

[0093] The mounting plate 102 has a third slotted hole 106. The third fixing block 13 is fixed to the mounting plate 102 by a third fastener, which is a third locking bolt. The third locking bolt passes through the third slotted hole 106 and is screwed to the third fixing block 13. By using the first, second, and third fasteners, the positions of the first fixing block 2, the second fixing block 12, and the third fixing block 13 can be adjusted and different specifications can be easily replaced, thus enabling application to different specifications of lower forks and increasing versatility. The fastening methods of the second and third fasteners are the same as those of the first fastener and will not be described in detail further.

[0094] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0095] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0096] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lower fork fixing welding mold for fixing a lower fork, the lower fork comprising a mudplate, a lower fork tube, and a fork hook, the fork hook and the lower fork tube being welded and fixed, characterized in that, Includes a base (1), on both sides of which a first fixing block (2) and a first limiting component are respectively provided; The first fixing block (2) is provided with a limiting groove structure for placing the lower fork tube and the mud plate; A clamping assembly is provided on the base (1), which is used to fix the mud plate in the limiting groove structure; The first limiting component is used to position the fork hook so that the lower fork tube is limited within the limiting groove structure.

2. The lower fork fixing welding mold according to claim 1, characterized in that, The limiting groove structure includes a connected positioning groove (3) and a U-shaped groove (4); The U-shaped groove (4) is used to place the lower fork tube; The positioning groove (3) is used to place the mud slab.

3. The lower fork fixing welding mold according to claim 2, characterized in that, The base (1) includes a base plate (101) and a mounting plate (102). The base plate (101) is connected to the mounting plate (102) via a support plate (103). The mounting plate (102) has a mounting surface, and an angle is formed between the mounting surface and the vertical surface. The angle is between 10 and 30 degrees.

4. The lower fork fixing welding mold according to claim 3, characterized in that, The clamping assembly includes a first clamping member and two second clamping members; Two second clamping components are located on both sides of the first clamping component, and each second clamping component is provided with a first fixing block (2) between it and the first clamping component; The first clamping member and the two second clamping members are each connected to the mounting plate (102) via a driving member; The first clamping member includes a first connecting plate (5) and two first pressure rods (6); The second clamping member includes a second connecting plate (7) and a second pressure bar (8); The first pressure rod (6) and the second pressure rod (8) correspond one-to-one. The first pressure rod (6) and the second pressure rod (8) cooperate to fix the mud plate in the positioning groove (3).

5. A lower fork fixing welding mold according to claim 4, characterized in that, The driving component includes a cylinder (9); The fixed end of the cylinder (9) is detachably connected to the mounting plate (102), and the first connecting plate (5) and the second connecting plate (7) are respectively connected to the pushing end of one of the cylinders (9).

6. The lower fork fixing welding mold according to claim 3, characterized in that, The first fixing block (2) is symmetrically provided with first positioning pins (11), and each first positioning pin (11) is connected to the first fixing block (2) through a first locking member. The first positioning pin (11) is used to limit the mud board piece in the positioning groove (3). The first fixing block (2) is slidably connected to the mounting plate (102), and the first fixing block (2) is fixed to the mounting plate (102) by a first fastener.

7. A lower fork fixing welding mold according to claim 6, characterized in that, The first locking member includes a first threaded post, and the first fixing block (2) is provided with a first mounting groove (201) and a first threaded groove (202) that are connected to each other. The first threaded post is screwed into the first threaded groove (202). The axial direction of the first mounting groove (201) is perpendicular to the axial direction of the first threaded groove (202); One end of the first positioning pin (11) is located in the first mounting groove (201), and the other end is located in the positioning groove (3).

8. The lower fork fixing welding mold according to claim 3, characterized in that, The first limiting component includes a second fixing block (12) and a third fixing block (13) disposed on the mounting plate (102); The second fixing block (12), the third fixing block (13), and the first fixing block (2) correspond one-to-one; The upper surface of the second fixing block (12) and the upper surface of the third fixing block (13) are located on the same plane; The second fixing block (12) is connected to a second positioning pin (14) by a second locking member. The second positioning pin (14) is used to position the fork hook.

9. A lower fork fixing welding mold according to claim 8, characterized in that, The second fixing block (12) is slidably connected to the mounting plate (102), and the second fixing block (12) is fixed to the mounting plate (102) by a second fastener.

10. A lower fork fixing welding mold according to claim 5, characterized in that, The base (1) is provided with a control handle (16) on one side, and the control handle (16) is electrically connected to the cylinder (9).

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