Auxiliary frame welding clamp

Abstract

The utility model discloses an auxiliary frame welding fixture, and relates to the technical field of automobile welding fixtures, the auxiliary frame welding fixture comprises a bottom plate and a clamping mechanism, the top of the clamping mechanism is diagonally distributed, the clamping mechanism comprises a supporting seat fixedly arranged on the bottom plate, the top of the supporting seat is fixedly connected with a cylinder body, the end part of the cylinder body is fixedly provided with an air pump, and the air pump is fixedly connected with the air pump. An air groove is formed in the cylinder body, the inflation end of the air pump communicates with the air groove, a first piston in sliding fit with the air groove is arranged in the air groove, and the side wall of the first piston is fixedly connected with a first movable rod in sliding fit with the end of the cylinder body; a first spring is fixedly connected to the position, located on the outer side of the first movable rod, between the first piston and the air groove, the clamping mechanism is arranged, the top of the auxiliary frame is pressed and positioned, the auxiliary frame is clamped and positioned in the horizontal direction, and therefore the clamping stability of the clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding fixtures, in particular to a subframe welding fixture. Background Art

[0002] The subframe can be regarded as the skeleton of the front and rear axles, and is a component of the front and rear axles. The subframe is not a complete frame, but a bracket that supports the front and rear axles and suspension, so that the axles and suspension are connected to the "main frame" through it, and is customarily called the "subframe". The function of the subframe is to block vibration and noise and reduce their direct entry into the car compartment, so it mostly appears in luxury cars and off-road vehicles. Some cars also install subframes for the engine, and the subframe needs to be fixed on the workbench by a clamp during welding to prevent the subframe from moving during welding, resulting in errors in the welding position and affecting the processing accuracy of the subframe.

[0003] The existing sub-frame welding fixture usually uses a cylinder to drive a pressure block to clamp the four corners of the frame for positioning. This clamping and positioning method only exerts a longitudinal pressure on the sub-frame, and the clamping effect is not good. Utility Model Content

[0004] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the utility model is to provide a subframe welding fixture to solve the problem of poor clamping effect of the existing subframe welding fixture mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subframe welding fixture, including a base plate and a clamping mechanism diagonally distributed on its top, the clamping mechanism including a support seat fixedly arranged on the base plate, the top of the support seat fixedly connected to a cylinder, the end of the cylinder fixedly installed with an air pump, and the cylinder is provided with an air groove inside, and the inflation end of the air pump is connected to the air groove, the inside of the air groove is provided with a first piston slidingly matched with the first piston, the side wall of the first piston is fixedly connected to a first movable rod slidingly matched with the end of the cylinder, a first spring is fixedly connected to the outside of the first movable rod between the first piston and the air groove, the outer wall of the support seat is provided with a horizontal clamping assembly for horizontally clamping the subframe, and the end of the first movable rod is connected to a longitudinal clamping assembly for longitudinally positioning the subframe.

[0006] Preferably, a first air hole is formed at the end of the cylinder.

[0007] Preferably, the horizontal clamping assembly includes a fixed seat fixedly arranged on the outer wall of the support seat, the fixed seat is an L-shaped structure, two groups of inner grooves are symmetrically opened inside the fixed seat, and an air duct connected to the two groups of inner grooves is opened inside the fixed seat, and a hose is connected between the air duct and the inner groove, and an elastic sliding structure is arranged inside the inner groove.

[0008] Preferably, the elastic sliding structure includes a second piston that slides with the inner groove, the side wall of the second piston is fixedly connected to a second movable rod that passes through the outer wall of the fixed seat, the end of the second movable rod is fixedly connected to a first clamping block, and a second spring is fixedly connected to the outside of the second movable rod between the second piston and the inner groove.

[0009] Preferably, a first rubber pad is fixedly provided on the outer wall of the first clamping block, and a second air hole communicating with the inner groove is opened on the outer wall of the fixing seat.

[0010] Preferably, the longitudinal clamping assembly includes a fixing plate fixedly arranged on the outer wall of the support seat and located above the fixing seat, the end of the fixing plate is provided with a movable column slidably matched with the movable column, the bottom of the movable column is fixedly connected with a second clamping block, the end of the first movable rod is located on the outer side of the movable column and is symmetrically fixedly connected with two groups of guide rods, and guide grooves are provided inside the two groups of guide rods, and guide columns slidably matched with the guide grooves are respectively fixed on the outer wall of the movable column.

[0011] Preferably, a second rubber pad is fixedly provided at the bottom of the second clamping block, and the guide rods are all obliquely provided at the ends of the first movable rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model fixes the sub-frame, under the action of the clamping mechanism, the air pump inflates the air groove, and the gas is firstly transported to the two groups of inner grooves through the hose and the airway. Under the filling pressure of the gas, the second piston slides in the inner groove and squeezes the second spring, so that the second movable rod drives the first clamping block to move, and the two groups of first clamping blocks on the same clamping mechanism adaptively abut against the edge of the sub-frame. After the first clamping blocks all abut against the edge of the sub-frame and cannot continue to move, the pressure of the gas begins to push the first piston to slide in the air groove, the first piston squeezes the first spring, and the first piston pushes the first movable rod to move, and the first movable rod drives the guide rod to move horizontally, and the guide groove in the guide rod pushes the guide column, so that the movable column slides longitudinally in the fixed plate, and the second clamping block at the bottom of the movable column presses the top of the sub-frame. When the second clamping blocks on the clamping mechanism are all pressed against the top of the sub-frame, the air pump is turned off. At this time, the clamping mechanism not only presses and positions the top of the sub-frame, but also clamps and positions the sub-frame in the horizontal direction, thereby improving the clamping stability of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 It is a partial front view cross-sectional structural schematic diagram of the clamping mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of a top cross-sectional structure of a horizontal clamping assembly of the utility model;

[0018] Figure 5 For this utility model Figure 2 Enlarged view of point A in .

[0019] In the figure: 1, bottom plate; 2, support seat; 3, cylinder; 4, air pump; 5, air groove; 6, first piston; 7, first movable rod; 8, first spring; 9, first air hole; 10, fixed seat; 11, inner groove; 12, airway; 13, hose; 14, second piston; 15, second movable rod; 16, first clamping block; 17, first rubber pad; 18, second spring; 19, second air hole; 20, fixed plate; 21, movable column; 22, second clamping block; 23, second rubber pad; 24, guide rod; 25, guide groove; 26, guide column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5The utility model provides a technical solution: a sub-frame welding fixture, including a base plate 1 and a clamping mechanism diagonally distributed on the top thereof, the clamping mechanism including a support seat 2 fixedly arranged on the base plate 1, a cylinder 3 fixedly connected to the top of the support seat 2, an air pump 4 fixedly installed at the end of the cylinder 3, and an air groove 5 is arranged inside the cylinder 3, and the inflation end of the air pump 4 is connected to the air groove 5, a first piston 6 slidingly matched with the first piston 6 is arranged inside the air groove 5, a first movable rod 7 slidingly matched with the end of the cylinder 3 is fixedly connected to the side wall of the first piston 6, a first spring 8 is fixedly connected to the outside of the first movable rod 7 between the first piston 6 and the air groove 5, a horizontal clamping assembly for horizontally clamping the sub-frame is arranged on the outer wall of the support seat 2, and a longitudinal pressing assembly for longitudinally positioning the sub-frame is connected to the end of the first movable rod 7.

[0022] A first air hole 9 is formed at the end of the cylinder 3 , and the first piston 6 discharges the air on its right side through the first air hole 9 when sliding, so as to ensure the air pressure balance in the air groove 5 .

[0023] The horizontal clamping assembly includes a fixing seat 10 fixedly arranged on the outer wall of the supporting seat 2. The fixing seat 10 is an L-shaped structure. Two groups of inner grooves 11 are symmetrically opened inside the fixing seat 10, and an air passage 12 connected with the two groups of inner grooves 11 is opened inside the fixing seat 10. A hose 13 is connected between the air passage 12 and the inner groove 11. An elastic sliding structure is arranged inside the inner groove 11. The subframe can be clamped in the horizontal direction through the horizontal clamping assembly.

[0024] The elastic sliding structure includes a second piston 14 that slides with the inner groove 11, and the side wall of the second piston 14 is fixedly connected to a second movable rod 15 that penetrates the outer wall of the fixed seat 10, and the end of the second movable rod 15 is fixedly connected to a first clamping block 16. A second spring 18 is fixedly connected to the outside of the second movable rod 15 between the second piston 14 and the inner groove 11. Under the filling pressure of the gas, the second piston 14 slides in the inner groove 11 and squeezes the second spring 18. At the same time, the second piston 14 drives the second movable rod 15 to slide, and the second movable rod 15 drives the first clamping block 16 to move, so that the two groups of first clamping blocks 16 on the same clamping mechanism adaptively contact the edge of the sub-frame.

[0025] A first rubber pad 17 is fixedly provided on the outer wall of the first clamping block 16, and a second air hole 19 communicating with the inner groove 11 is opened on the outer wall of the fixing seat 10. When the second piston 14 slides, the air on its right side is discharged through the second air hole 19 to ensure the air pressure balance in the inner groove 11. The first clamping block 16 avoids surface scratches when clamping the sub-frame through the first rubber pad 17 on its outer wall.

[0026] The longitudinal clamping assembly includes a fixing plate 20 fixedly arranged on the outer wall of the support seat 2 and located above the fixing seat 10, and a movable column 21 slidably matched therewith is arranged at the end of the fixing plate 20, and a second clamping block 22 is fixedly connected to the bottom of the movable column 21, and the end of the first movable rod 7 is located on the outer side of the movable column 21 and is symmetrically fixedly connected with two groups of guide rods 24, and guide grooves 25 are provided inside the two groups of guide rods 24, and guide columns 26 slidably matched with the guide grooves 25 are respectively fixed on the outer wall of the movable column 21, and the sub-frame can be longitudinally clamped and positioned by the longitudinal clamping assembly.

[0027] A second rubber pad 23 is fixedly provided at the bottom of the second clamping block 22, and the guide rods 24 are all obliquely arranged at the ends of the first movable rod 7. The second clamping block 22 avoids surface scratches when the sub-frame is pressed by the second rubber pad 23 on its outer wall, and since the guide rod 24 is obliquely arranged, the guide groove 25 in the guide rod 24 pushes the guide column 26, so that the movable column 21 slides longitudinally in the fixed plate 20.

[0028] Working principle: When using the sub-frame welding fixture, first, place the sub-frame on the bottom plate 1 and between the clamping mechanisms, and start the air pump 4 on the clamping mechanism. The air pump 4 inflates the air tank 5. Since the elastic force of the first spring 8 is greater than the second spring 18, the gas is first transported to the two sets of inner tanks 11 through the hose 13 and the air channel 12. Under the pressure of the gas, the second piston 14 slides in the inner tank 11 and squeezes the second spring 18. At the same time, the second piston 14 drives the second movable rod 15 to slide. , the second movable rod 15 drives the first clamping block 16 to move, so that the two groups of first clamping blocks 16 on the same clamping mechanism adaptively abut against the edge of the sub-frame, wherein the second piston 14 discharges the air on its right side through the second air hole 19 when sliding, so as to ensure the air pressure balance in the inner groove 11, and the first clamping block 16 avoids surface scratches when clamping the sub-frame through the first rubber pad 17 on its outer wall. After the first clamping blocks 16 on the clamping mechanism abut against the edge of the sub-frame, the sub-frame can be horizontally limited;

[0029] Then, after the first clamping block 16 all hits the edge of the sub-frame and cannot move further, the gas pressure starts to push the first piston 6 to slide in the gas groove 5, and the first piston 6 squeezes the first spring 8, wherein the first piston 6 discharges the air on its right side through the first air hole 9 when sliding, to ensure the gas pressure balance in the gas groove 5, and the first piston 6 pushes the first movable rod 7 to move, and the first movable rod 7 drives the guide rod 24 to move horizontally. Since the guide rod 24 is inclined, the guide groove 25 in the guide rod 24 pushes the guide column 26, so that the movable column 21 slides longitudinally in the fixed plate 20, and passes through the bottom of the movable column 21. The second clamping block 22 presses the top of the sub-frame, and the second clamping block 22 avoids surface scratches when pressing the sub-frame through the second rubber pad 23 on the outer wall. When the second clamping blocks 22 on the clamping mechanism are all pressed on the top of the sub-frame, the air pump 4 is turned off. At this time, the clamping mechanism not only presses and positions the top of the sub-frame, but also clamps and positions the sub-frame in the horizontal direction, thereby improving the clamping stability of the clamp. Otherwise, the air pump 4 is turned on to evacuate air. Under the action of the first spring 8 and the second spring 18, the first clamping block 16 and the second clamping block 22 are moved and reset, and the positioned sub-frame can be disassembled.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A subframe welding fixture, comprising a bottom plate (1) and a diagonally distributed clamping mechanism on its top, characterized in that: The clamping mechanism comprises a support seat (2) fixedly arranged on a bottom plate (1), a cylinder (3) fixedly connected to the top of the support seat (2), an air pump (4) fixedly installed at the end of the cylinder (3), an air groove (5) arranged inside the cylinder (3), and an inflation end of the air pump (4) is connected to the air groove (5), a first piston (6) slidably matched with the air groove (5) is arranged inside the air groove (5), a first movable rod (7) slidably matched with the end of the cylinder (3) is fixedly connected to the side wall of the first piston (6), a first spring (8) is fixedly connected to the outside of the first movable rod (7) between the first piston (6) and the air groove (5), a horizontal clamping component for horizontally clamping the sub-frame is arranged on the outer wall of the support seat (2), and a longitudinal clamping component for longitudinally positioning the sub-frame is connected to the end of the first movable rod (7).

2. The subframe welding fixture according to claim 1, characterized in that: A first air hole (9) is provided at the end of the cylinder (3).

3. The subframe welding fixture according to claim 1, characterized in that: The horizontal clamping assembly comprises a fixing seat (10) fixedly arranged on the outer wall of the supporting seat (2), the fixing seat (10) being an L-shaped structure, the fixing seat (10) being symmetrically provided with two groups of inner grooves (11) inside, and an air passage (12) communicating with the two groups of inner grooves (11) inside the fixing seat (10), and a hose (13) being connected between the air passage (12) and the inner groove (11), and an elastic sliding structure being provided inside the inner groove (11).

4. The subframe welding fixture according to claim 3, characterized in that: The elastic sliding structure comprises a second piston (14) slidably matched with the inner groove (11); a second movable rod (15) penetrating the outer wall of the fixing seat (10) is fixedly connected to the side wall of the second piston (14); a first clamping block (16) is fixedly connected to the end of the second movable rod (15); and a second spring (18) is fixedly connected to the outer side of the second movable rod (15) between the second piston (14) and the inner groove (11).

5. The subframe welding fixture according to claim 4, characterized in that: A first rubber pad (17) is fixedly disposed on the outer wall of the first clamping block (16), and a second air hole (19) communicating with the inner groove (11) is formed on the outer wall of the fixing seat (10).

6. The subframe welding fixture according to claim 1, characterized in that: The longitudinal clamping assembly comprises a fixing plate (20) fixedly arranged on the outer wall of the support seat (2) and located above the fixing seat (10); a movable column (21) slidably matched with the fixing plate (20) is arranged at the end of the fixing plate (20); a second clamping block (22) is fixedly connected to the bottom of the movable column (21); the end of the first movable rod (7) is located outside the movable column (21) and is symmetrically fixedly connected to two groups of guide rods (24); guide grooves (25) are provided inside the two groups of guide rods (24); and guide columns (26) slidably matched with the guide grooves (25) are respectively fixed to the outer wall of the movable column (21).

7. The subframe welding fixture according to claim 6, characterized in that: A second rubber pad (23) is fixedly arranged at the bottom of the second clamping block (22), and the guide rods (24) are all obliquely arranged at the ends of the first movable rod (7).

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