Gap adjusting mechanism for automobile welding production line

Abstract

The invention discloses an automobile welding production line gap adjusting mechanism, and relates to the technical field of automobile welding, the automobile welding production line gap adjusting mechanism comprises a first limiting block and a second limiting block, a fixing groove is formed in the center of the top of the first limiting block in a penetrating manner, an insertion bolt is in threaded connection with the interior of the fixing groove, and a guide hole is formed in the center of the interior of the second limiting block in a penetrating manner; the tail end of the inserting bolt extends into the guide hole and is in sliding connection with the guide hole, a plurality of stepped first limiting steps are arranged on the bottom face of the first limiting block, a first guide inclined face is arranged between every two adjacent first limiting steps, and a plurality of stepped second limiting steps are arranged above the second limiting block. The first limiting steps correspond to the second limiting steps in position, and a second guide inclined face is arranged between every two adjacent second limiting steps. The device has the advantages that new welding requirements can be quickly met through the adjusting mechanism, the downtime during vehicle type conversion is shortened, repeated adjustment and waiting in the welding process are reduced, and the overall production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile welding and assembly, and in particular to a gap adjustment mechanism for an automobile welding and assembly production line. Background Art

[0002] Existing cars generally adopt the rear door form of hatchback tailgate, which is composed of sheet metal assembly, windshield, interior trim and various accessories, and uses electric struts or gas springs for power opening. There are many structural parts of this type, resulting in the weight of the entire rear door being as high as more than 37kg. At the same time, the opening form of the hatchback tailgate is an upward opening form with an opening angle of about 58°, which limits its function. During driving, the hatchback tailgate must be kept closed. At the same time, due to its fastback shape, the space in the trunk is limited and large items cannot be placed. During the production process, the hatchback tailgate needs to go through multiple processes such as stamping, welding, adjustment, matching and assembly, with many parts and complex processes.

[0003] At present, in the process of welding the car body and the rear cover door, it is generally necessary to use a fixing tool to limit the gap between the two before subsequent welding can be carried out. However, the gap between the car body and the rear cover door is often affected by the vehicle model and needs to be adjusted frequently. Different vehicle models have different gaps between the two, which makes the welding process relatively troublesome. Every time the vehicle model is changed, the fixing tool needs to be readjusted or replaced. This poorly adaptable operation method will lead to frequent process adjustments, increase the complexity and downtime of the production line, and increase the complexity of the production line. The process of adjustment using the fixed tool increases the complexity of production and reduces the overall efficiency. In view of the above problems, a gap adjustment mechanism for an automobile welding production line is proposed to solve them. Summary of the invention

[0004] In order to solve the above technical problems, a gap adjustment mechanism for an automobile welding production line is provided, which solves the above-mentioned problem that in the current welding process of the car body and the rear cover door, it is generally necessary to use a fixed tool to limit the gap between the two before subsequent welding can be carried out. However, the gap between the car body and the rear cover door is often affected by the vehicle model and needs to be adjusted frequently. Different vehicle models have different gaps between the two, which makes the welding process relatively troublesome. Every time the vehicle model is changed, the fixed tool needs to be readjusted or replaced. This poorly adaptable operation method will lead to frequent process adjustments, increase the complexity and downtime of the production line, and the process of adjustment using fixed tools increases the complexity of production and reduces the overall efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a gap adjustment mechanism for an automobile welding production line, comprising a first limit block and a second limit block, a fixing groove is penetrated at the center of the top of the first limit block, a plug bolt is threadedly connected inside the fixing groove, a guide hole is penetrated at the center position inside the second limit block, the end of the plug bolt extends into the guide hole and is slidably connected to the guide hole, a plurality of stepped first limit steps are arranged on the bottom surface of the first limit block, a first guide inclined surface is arranged between two adjacent first limit steps, a plurality of stepped second limit steps are arranged above the second limit block, the first limit step corresponds to the position of the second limit step, and a second guide inclined surface is arranged between two adjacent second limit steps.

[0006] Preferably, a return spring is sleeved on the outer surface of the plug bolt, the upper end of the return spring is fixedly connected to the bottom surface of the first limit block, and the lower end of the return spring is fixedly connected to the inner bottom surface of the second limit block.

[0007] Preferably, a first sliding groove is provided on an outer surface of one side of the first limiting block, and a second sliding groove is provided on an outer surface of the second limiting block at a position corresponding to the first sliding groove.

[0008] Preferably, first limiting grooves are provided on both left and right sides of the first sliding groove, and second limiting grooves are provided on both left and right sides of the second sliding groove.

[0009] Preferably, a fixing plate is slidably connected inside the first sliding groove and the second sliding groove, and limiting protrusions matching the first limiting groove and the second limiting groove are fixedly connected on the left and right sides of the fixing plate, and a through hole is opened through the end surface of the fixing plate.

[0010] Preferably, a fixing ring is fixedly connected above the outer surface of the first limit block, a plurality of arc-shaped friction protrusions are arranged on the outer side of the fixing ring, a first plug-in hole is penetrated through the upper surface of the fixing ring at a position corresponding to the friction protrusion, and a fixing component is plugged into the first plug-in hole.

[0011] Preferably, a fixing seat is fixedly connected to the outer surface of the second limiting block at a position corresponding to the second limiting step at the highest point, and a second plug hole is formed through the upper surface of the fixing seat.

[0012] Preferably, the fixing assembly includes a plug-in column, the plug-in column is slidably connected to the inside of the first plug-in hole, and the lower end of the plug-in column extends to the inside of the second plug-in hole.

[0013] Preferably, a limiting ball is fixedly connected to the top of the plug-in column, and installation grooves are provided on the outer surface of the plug-in column and on both sides below the fixing seat. A limiting rod is rotatably connected to the bottom of the installation groove, and an extrusion spring is fixedly connected to the top of the installation groove. The end of the extrusion spring away from the installation groove is fixedly connected to the end of the limiting rod away from the rotating shaft.

[0014] Preferably, a scale for observation is provided on the outer surface of the second limiting block at a position corresponding to the second limiting step, and an anti-slip pad is fixedly connected to the bottom surface of the second limiting block.

[0015] Compared with the prior art, the advantages of the present invention are: the gap adjustment mechanism integrates a number of optimized designs, and its significant advantages are: the automatic reset function provided by the reset spring ensures the accuracy and stability of the gap adjustment; the precise matching of the sliding groove and the limit groove, and the reinforced connection of the fixing plate greatly enhance the stability and durability of the mechanism; the fixing component adopts the innovative design of plug-in columns, limit rods and extrusion springs, which not only realizes a fast and firm connection, but also has an automatic locking function, effectively preventing accidental falling off; at the same time, the introduction of scale marks makes the gap adjustment more intuitive and precise, and the addition of anti-slip pads further enhances the stability of the mechanism in the working state. The mechanism can quickly adjust the distance between the car body and the rear cover, greatly improving the flexibility of the production line. When the production line needs to switch to different models, the operator can quickly adapt to the new welding requirements through the adjustment mechanism, reducing the downtime during model conversion, reducing repeated adjustments and waiting during the welding process, and improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the first limit block in the present invention; Figure 3 It is a schematic diagram of the structure of the second limiting block in the present invention; Figure 4 It is a structural schematic diagram of the second limiting block in the present invention from another viewing angle; Figure 5 It is a top view of the present invention; Figure 6 for Figure 5 Sectional view at AA in the middle; Figure 7 It is a schematic diagram of the structure of the fixing component in the present invention; Figure 8 for Figure 7 A partial enlarged view of the middle A; Fig. 9 for Figure 3 A partial enlarged view of point B in the middle; Fig.10 for Figure 2 A partial enlarged view of point C in the middle; Fig.11 for Figure 1 A partial enlarged view of point D in the middle.

[0017] The numbers in the figure are: 1. First limiting block; 101. First sliding groove; 102. First limiting groove; 103. First limiting step; 104. First guiding slope; 2. Second limiting block; 201. Second sliding groove; 202. Second limiting groove; 203. Second limiting step; 204. Second guiding slope; 3. Anti-skid pad; 4. Guide hole; 5. Fixed groove; 6. Connecting bolt; 7. Reset spring; 8. Fixed ring; 9. Friction protrusion; 10. First plug-in hole; 11. Fixed seat; 12. Second plug-in hole; 13. Fixed assembly; 1301. Plug-in column; 1302. Limiting ball; 1303. Mounting groove; 1304. Limiting rod; 1305. Extrusion spring; 14. Fixed sheet; 15. Limiting protrusion; 16. Through hole. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] Reference Figure 1 - Fig.11 As shown, a gap adjustment mechanism for an automobile welding production line includes a first limit block 1 and a second limit block 2. A fixing groove 5 is penetrated at the center of the top of the first limit block 1, and a plug bolt 6 is threadedly connected inside the fixing groove 5. A guide hole 4 is penetrated at the center position inside the second limit block 2, and the end of the plug bolt 6 extends into the guide hole 4 and is slidably connected to the guide hole 4. A plurality of stepped first limit steps 103 are arranged on the bottom surface of the first limit block 1, and a first guiding inclined surface 104 is arranged between two adjacent first limit steps 103. A plurality of stepped second limit steps 203 are arranged above the second limit block 2, and the first limit steps 103 correspond to the positions of the second limit steps 203, and a second guiding inclined surface 204 is arranged between two adjacent second limit steps 203.

[0020] Specifically, in combination with the above scheme, Figures 1 to 11As shown, a return spring 7 is sleeved on the outer surface of the plug bolt 6, the upper end of the return spring 7 is fixedly connected to the bottom surface of the first limit block 1, and the lower end of the return spring 7 is fixedly connected to the inner bottom surface of the second limit block 2. The return spring 7 provides the gap adjustment mechanism with an automatic return function. When an external force acts on the first limit block 1 and the second limit block 2, causing them to move relative to each other, the return spring 7 will be stretched. Once the external force disappears, the return spring 7 will release energy to push the first limit block 1 and the second limit block 2 back to their initial positions, thereby realizing the automatic return function.

[0021] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, a first sliding groove 101 is provided on the outer surface of one side of the first limit block 1, and a second sliding groove 201 is provided on the outer surface of the second limit block 2 at a position corresponding to the first sliding groove 101. When the mechanism is not in use, the first sliding groove 101 and the second sliding groove 201 provide a sliding track for the fixing plate 14, so that the fixing plate 14 can be stably inserted between the first limit block 1 and the second limit block 2, so that the first limit block 1 and the second limit block 2 do not slide relative to each other when they are at the zero position.

[0022] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, the first sliding groove 101 is provided with a first limiting groove 102 on both sides thereof, and the second sliding groove 201 is provided with a second limiting groove 202 on both sides thereof. The first limiting groove 102 and the second limiting groove 202 cooperate with the limiting protrusion 15 of the fixing plate 14, further enhancing the connection stability between the fixing plate 14 and the limiting block, and preventing the fixing plate 14 from being offset or falling off during the sliding process.

[0023] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, a fixing plate 14 is slidably connected inside the first sliding groove 101 and the second sliding groove 201, and limiting protrusions 15 that are compatible with the first limiting groove 102 and the second limiting groove 202 are fixedly connected on the left and right sides of the fixing plate 14. A through hole 16 is opened through the end surface of the fixing plate 14, and the through hole 16 can be used for inserting strip-like objects, so as to facilitate removing the fixing plate 14 from the first sliding groove 101 and the second sliding groove 201. The fixing plate 14 is used to limit the first limiting block 1 and the second limiting block 2 when they are at the zero position to prevent the two first limiting blocks 1 and the second limiting blocks 2 from sliding against each other.

[0024] Specifically, in combination with the above scheme, Figures 1 to 11As shown, a fixing ring 8 is fixedly connected above the outer surface of the first limit block 1, and a plurality of arc-shaped friction protrusions 9 are arranged on the outer side of the fixing ring 8. A first plug-in hole 10 is penetrated through the upper surface of the fixing ring 8 at a position corresponding to the friction protrusion 9, and a fixing component 13 is plugged into the first plug-in hole 10. The fixing ring 8 provides an additional gripping point, and the friction protrusion 9 increases the friction between the fixing ring 8 and the hand, so as to facilitate the application of force to the first limit block 1.

[0025] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, a fixing seat 11 is fixedly connected to the outer surface of the second limiting block 2 at a position corresponding to the second limiting step 203 at the highest point, and a second plug hole 12 is formed through the upper surface of the fixing seat 11 .

[0026] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, the fixing assembly 13 includes a plug-in column 1301 , which is slidably connected to the inside of the first plug-in hole 10 , and the lower end of the plug-in column 1301 extends to the inside of the second plug-in hole 12 .

[0027] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, a limiting ball 1302 is fixedly connected to the top of the plug-in column 1301, and mounting grooves 1303 are provided on the outer surface of the plug-in column 1301 and on both sides below the fixing seat 11. A limiting rod 1304 is rotatably connected to the lower part of the mounting groove 1303, and an extrusion spring 1305 is fixedly connected to the upper part of the mounting groove 1303. The end of the extrusion spring 1305 away from the mounting groove 1303 is fixedly connected to the end of the limiting rod 1304 away from the rotating shaft. The coordinated use of the limiting rod 1304 and the extrusion spring 1305 also provides an automatic locking function to prevent the plug-in column 1301 from accidentally falling off.

[0028] Specifically, in combination with the above scheme, Figures 1 to 11 As shown, a scale for observation is provided at a position corresponding to the second limit step 203 on the outer surface of the second limit block 2, and the scale provides an intuitive reading for the user, so that they can accurately adjust the gap between the first limit block 1 and the second limit block 2 as needed. An anti-skid pad 3 is fixedly connected to the bottom surface of the second limit block 2, and the anti-skid pad 3 increases the friction between the second limit block 2 and the contact surface, thereby preventing the gap adjustment mechanism from sliding or shifting during use.

[0029] Working principle: when it is necessary to adjust the gap between the vehicle body and the rear cover, first pull out the fixing plate 14 and the fixing assembly 13, and then insert the mechanism between the vehicle body and the rear cover, the end of the first limit block 1 contacts the surface of the vehicle body, and the end of the second limit block 2 contacts the surface of the rear cover, and it is only necessary to move the upper first limit block 1 along the axis of the plug bolt 6 toward the direction of the nut. At this time, the two mutually meshing first limit steps 103 and second limit steps 203 will separate, and then hold the fixing ring 8 and use the friction protrusion 9 to rotate the first limit block 1 close to the nut in the direction of the scale. Since the first limit block 1 and the second limit block 2 are meshed with each other in a step-by-step manner along the inclined direction, they can be gradually lifted. Therefore, after the upper first limit block 1 rotates, after letting go, under the reset action of the reset spring 7, the first limit block 1 and The second limit block 2 will engage again, and the connection line spacing between the endpoints outside the first limit block 1 and the second limit block 2 will change, so that the distance between the vehicle body and the rear cover can be easily adjusted. In order to prevent the first limit block 1 and the second limit block 2 from sliding, the plug-in column 1301 is inserted into the first plug-in hole 10 and the second plug-in hole 12. When the end of the plug-in column 1301 extends to the outside of the fixing seat 11, the extrusion spring 1305 will restore the elastic force to push the limit rod 1304, so that the limit rod 1304 rotates around its rotating axis, thereby preventing the plug-in column 1301 from being disengaged from the first plug-in hole 10 and the second plug-in hole 12, and further preventing the first limit block 1 and the second limit block 2 from sliding against each other. When removing the fixing assembly 13, you only need to pinch the two limit rods 1304 so that the limit rods 1304 enter the inside of the installation groove 1303.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A gap adjustment mechanism for an automobile welding production line, characterized in that: The invention comprises a first limiting block (1) and a second limiting block (2), wherein a fixing groove (5) is provided through the center of the top of the first limiting block (1), a plug bolt (6) is threadedly connected inside the fixing groove (5), a guide hole (4) is provided through the center of the inside of the second limiting block (2), a tip of the plug bolt (6) extends into the inside of the guide hole (4) and is slidably connected to the guide hole (4), a plurality of stepped first limiting steps (103) are provided on the bottom surface of the first limiting block (1), a first guiding inclined surface (104) is provided between two adjacent first limiting steps (103), a plurality of stepped second limiting steps (203) are provided above the second limiting block (2), the first limiting steps (103) and the second limiting steps (203) are located at positions corresponding to each other, and a second guiding inclined surface (204) is provided between two adjacent second limiting steps (203).

2. The gap adjustment mechanism for an automobile welding production line according to claim 1, characterized in that: A return spring (7) is sleeved on the outer surface of the plug bolt (6), the upper end of the return spring (7) is fixedly connected to the bottom surface of the first limit block (1), and the lower end of the return spring (7) is fixedly connected to the inner bottom surface of the second limit block (2).

3. The gap adjustment mechanism for an automobile welding production line according to claim 1, characterized in that: A first sliding groove (101) is provided on the outer surface of one side of the first limiting block (1), and a second sliding groove (201) is provided on the outer surface of the second limiting block (2) at a position corresponding to the first sliding groove (101).

4. The gap adjustment mechanism for an automobile welding production line according to claim 3 is characterized in that: The first sliding groove (101) is provided with first limiting grooves (102) on both left and right sides, and the second sliding groove (201) is provided with second limiting grooves (202) on both left and right sides.

5. The gap adjustment mechanism for an automobile welding production line according to claim 3, characterized in that: A fixing plate (14) is slidably connected inside the first sliding groove (101) and the second sliding groove (201), and limiting protrusions (15) matching the first limiting groove (102) and the second limiting groove (202) are fixedly connected on the left and right sides of the fixing plate (14), and a through hole (16) is formed through the surface of the end of the fixing plate (14).

6. The gap adjustment mechanism for an automobile welding production line according to claim 1, characterized in that: A fixing ring (8) is fixedly connected to the upper portion of the outer surface of the first limit block (1); a plurality of arc-shaped friction protrusions (9) are arranged on the outer side of the fixing ring (8); a first plug-in hole (10) is formed through the upper surface of the fixing ring (8) at positions corresponding to the friction protrusions (9); a fixing component (13) is plugged into the interior of the first plug-in hole (10).

7. The gap adjustment mechanism for an automobile welding production line according to claim 1, characterized in that: A fixing seat (11) is fixedly connected to the outer surface of the second limiting block (2) at a position corresponding to the second limiting step (203) at the highest point, and a second plug hole (12) is formed through the upper surface of the fixing seat (11).

8. The gap adjustment mechanism for an automobile welding production line according to claim 6, characterized in that: The fixing assembly (13) comprises a plug-in column (1301), wherein the plug-in column (1301) is slidably connected to the inside of the first plug-in hole (10), and the lower end of the plug-in column (1301) extends to the inside of the second plug-in hole (12).

9. The gap adjustment mechanism for an automobile welding production line according to claim 8, characterized in that: The top of the plug-in column (1301) is fixedly connected to a limiting ball (1302); the outer surface of the plug-in column (1301) and both sides below the fixing seat (11) are provided with mounting grooves (1303); the lower part of the mounting groove (1303) is rotatably connected to a limiting rod (1304); the upper part of the mounting groove (1303) is fixedly connected to an extrusion spring (1305); one end of the extrusion spring (1305) away from the mounting groove (1303) is fixedly connected to one end of the limiting rod (1304) away from the rotating shaft.

10. The gap adjustment mechanism for an automobile welding production line according to claim 1, characterized in that: A scale for observation is provided at a position on the outer surface of the second limiting block (2) corresponding to the second limiting step (203), and an anti-slip pad (3) is fixedly connected to the bottom surface of the second limiting block (2).

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