Leaf spring assembly riveting device

Abstract

Leaf spring assembly riveting device, comprising a support assembly, a pressing assembly, and a moving unit; the support assembly includes a fixed seat, two support blocks, a support seat, and an elastic reset member. The two support blocks are arranged oppositely, and support members are respectively arranged at the opposite ends. The support seat is located between the two support members and can move along the height direction of the fixed seat. The upper surface of the support seat forms a support surface, and the elastic reset member is used to provide an elastic stress for pushing the support seat upward; the pressing assembly includes a pressing rod and a pressing sleeve extending along the height direction. A pressing head is fixed to the lower end of the pressing rod, and a pressing surface is formed on the lower end surface of the pressing sleeve. The pressing surface cooperates with the support member to form a clamping mechanism for clamping the leaf spring and the clamp. In the present invention, through a single pressing process at one station, the riveting and bending actions are simultaneously completed, improving the assembly efficiency of the leaf spring assembly.

Description

Technical Field

[0001] The present invention relates to a processing device for vehicle parts, and particularly to a riveting device for a leaf spring assembly. Background Art

[0002] A leaf spring assembly is usually composed of a plurality of stacked steel leaf springs. During assembly, it is necessary to use a clamp to tighten the plurality of steel leaf springs. Specifically, the clamp is U-shaped, the middle part of the clamp is connected to one steel leaf spring through a rivet, the two sides of the clamp are bent and located on the side of the leaf spring assembly, and then the two ends of the clamp are connected and tightened by bolts. The current assembly method is to rivet the middle part of a strip-shaped clamp through a rivet into a rivet hole opened on the steel leaf spring, and then bend the parts of the clamp extending out of both sides of the steel leaf spring. Its riveting step and bending step are completed at two workstations respectively, resulting in a low assembly efficiency of the leaf spring assembly. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a riveting device for a leaf spring assembly, which can improve the assembly efficiency of the leaf spring assembly.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The riveting device for a leaf spring assembly includes a support assembly, a pressing assembly located above the support assembly, and a driving unit for driving the pressing assembly to move up and down;

[0006] The support assembly includes a fixed seat, two support blocks, a support seat, and an elastic reset member. The two support blocks are both installed on the fixed seat and are arranged oppositely, and one support member is respectively provided at the opposite ends of the two support blocks. The two support members respectively support below the two ends of the clamp. The support seat is located between the two support members and can move along the height direction of the fixed seat. The upper surface of the support seat forms a support surface for supporting the rivet, the steel leaf spring, and the middle part of the clamp. The elastic reset member is used to provide an elastic stress for pushing the support seat upward;

[0007] The pressing assembly includes a pressure rod extending along the height direction and a pressure sleeve sleeved outside the pressure rod. A pressure head for pressing the rivet is fixed at the lower end of the pressure rod and is located directly above the support seat. The lower end surface of the pressure sleeve forms a pressing surface, and the pressing surface cooperates with the support seat to form a clamping mechanism for clamping the steel leaf spring and the clamp;

[0008] The two support blocks are slidably matched with the fixed seat, and both of the two support blocks can move between a first position away from the support seat and a second position close to the support seat along the length direction of the fixed seat; the support assembly further includes two push components respectively corresponding to the two support blocks. The push component is used to push the corresponding support block to move from the first position to the second position when the support seat moves downward;

[0009] The jacking assembly includes a movable rod located outside the support block, a movable member located below the support block and slidable along the length direction of the fixed seat, and a movable seat installed on the support seat. The middle part of the movable rod is hinged on the fixed seat. The top of the movable rod abuts against the outside of the support block, and the bottom abuts against the outside of the movable member. The inner side of the movable member abuts against the movable seat, and the movable seat is used to jack the movable member outward when the support seat moves downward;

[0010] A first adjusting bolt that abuts against the outside of the support block is screwed on the top of the movable rod, and a second adjusting bolt that abuts against the outside of the movable member is screwed on the bottom of the movable rod.

[0011] The pressure sleeve is movably sleeved on the pressure rod, and an elastic buffer is arranged between the pressure rod and the pressure sleeve. The elastic buffer is used to provide an elastic stress for jacking the pressure sleeve downward.

[0012] An upper support plate is fixed at the top end of the pressure rod, a lower support plate located below the upper support plate is fixed at the top end of the pressure sleeve, the elastic buffer is installed between the upper support plate and the lower support plate, and the output end of the driving unit is connected to the upper support plate.

[0013] The elastic buffer includes a plurality of air springs evenly distributed on the outer periphery of the pressure rod. The upper end of the air spring is connected to the upper support plate, and the lower end is connected to the lower support plate.

[0014] The pressure head is fixed to the lower end of the pressure rod in a detachable manner.

[0015] The top of the pressure head is inserted into the installation groove opened on the lower end surface of the pressure rod. A machine screw is arranged on the pressure rod and extends radially to press and fix the pressure head on the pressure rod. An avoidance groove for avoiding the machine screw is arranged on the pressure sleeve.

[0016] The support member is a roller pivotally connected to the inside of the support block.

[0017] The support seat includes a rod portion extending in the height direction and a support platform radially extending outward from the top end of the rod portion. The movable seat is sleeved on the rod portion. Two inclined surfaces are respectively arranged on both sides of the movable seat. The inclined surfaces gradually incline towards the rod portion from top to bottom, and the two inclined surfaces are respectively used to jack the inner sides of the two movable members.

[0018] An installation hole is opened on the fixed seat, the movable seat is placed in the installation hole, and a limiting step for limiting the maximum displacement of the downward movement of the movable seat is arranged on the side wall of the installation hole.

[0019] A connecting seat is fixed at the lower end of the rod portion, a bottom plate is connected below the fixed seat, and the elastic resetting member is a spring installed between the bottom plate and the connecting seat.

[0020] The beneficial effects of the present invention are as follows:

[0021] In the present invention, a pressure head is provided at the lower end of the pressure rod, and a pressure sleeve is arranged outside the pressure rod. When the pressure head presses the rivet, while the clamp and the leaf spring are riveted together, the pressure sleeve is used to move the clamp downward, and the two ends of the clamp are jacked upward by the support member, so that the clamp is bent on both sides of the leaf spring, that is, in one working station, through one pressing process, the riveting and bending actions are completed simultaneously, improving the assembly efficiency of the leaf spring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 is Figure 2 an enlarged view of part A in

[0025] Figure 4 a schematic view of a working state of the present invention;

[0026] Figure 5 is a schematic view of another working state of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] Next, in combination with the drawings and the specific embodiments, the present invention will be further described:

[0028] As shown in Figure 1 and 2, as shown in FIGS. 3, the riveting device for leaf spring assemblies of the present invention is used to rivet the clamp 91 and the leaf spring 90 together, and at the same time, both ends of the clamp 91 are bent upward by 90° from both sides of the leaf spring 90. The riveting device for leaf spring assemblies includes a support assembly 200, a pressing assembly 100 located above the support assembly 200, and a driving unit. During riveting, the rivet 92, the clamp 91, and the leaf spring 90 are placed between the support assembly 200 and the pressing assembly 100, and the driving unit drives the pressing assembly 100 to move downward to complete the riveting and the bending action of the clamp 91. After completion, the driving unit drives the pressing assembly 100 to move upward to prepare for the next riveting and bending action.Specifically, the support assembly 200 includes a fixed seat 210, two support blocks 220, a support seat 230, and a spring 260. The fixed seat 210 is the installation base part of the entire support assembly 200. The two support blocks 220 are both installed on the fixed seat 210 and are arranged oppositely. Support members are respectively provided at the opposite ends of the two support blocks 220. The above-mentioned support seat 230 is located between the two support members and can move along the height direction (i.e., the Z direction in the figure). The upper surface of the support seat 230 forms a support surface for supporting the middle parts of the rivet 92, the leaf spring 90, and the clamp 91. The spring 260 is used to push the support seat 230 upward at the bottom of the support seat 230, that is, the spring 260 can always provide an elastic stress that pushes the support seat 230 upward. The pressing assembly 100 includes a pressing rod 110 and a pressing sleeve 120. The pressing rod 110 extends along the height direction. The pressing sleeve 120 is sleeved outside the pressing rod 110. A pressing head 111 is fixed at the lower end of the pressing rod 110. The pressing head 111 is located directly above the support seat 203. The lower end surface of the pressing sleeve 120 forms a pressing surface 122. During riveting, the rivet head of the rivet 92 faces downward and is placed on the support seat 230. The rivet 92 passes upward through the rivet holes on the clamp 91 and the rivet holes on the leaf spring 92 in sequence. The upper end of the rivet 92 has a part protruding from the upper surface of the leaf spring 90. This part deforms during riveting to cooperate with the rivet head of the rivet 92 to connect the leaf spring 90 and the clamp 91 together. After the clamp 91 is placed on the support seat 230, both ends of the clamp 91 are respectively lapped on the support members of the two support blocks 220. That is to say, the two support members respectively support the lower parts of both ends of the clamp 91. When the driving unit drives the pressing assembly 100 to move downward, the pressing head 111 presses the rivet 92 to rivet the clamp 91 and the leaf spring 90 together. At the same time, the pressing sleeve 120 pushes the leaf spring 90 and the clamp 91 downward, and the pressing surface 122 at the lower end of the pressing sleeve 120 cooperates with the support surface on the support seat 230 to form a clamping mechanism to clamp the clamp 91 and the leaf spring 90. The support seat 230 moves downward with the pressing sleeve 120. Since both ends of the clamp 91 are supported by the support members, when the clamp 91 is clamped by the clamping mechanism and moves downward, the two end parts of the clamp 91 are bent upward. As long as the distance between the two support members is set to be slightly larger than the width of the leaf spring 90, a die structure can be formed between the two support members. In this way, when the clamp 91 moves downward with the support seat 230, the two support members bend the two ends of the clamp 91 upward, and the bending angle gradually becomes larger as the clamp 91 moves downward until the bending angle reaches 90°.

[0029] In the present invention, a pressing head is provided at the lower end of a pressing rod, and a pressing sleeve is arranged outside the pressing rod. By using the pressing head to press a rivet, while riveting a clamp and a leaf spring together, the pressing sleeve is used to move the clamp downward, and both ends of the clamp are jacked upward by a support member, so that the clamp is bent on both sides of the leaf spring, that is, the riveting and bending actions are simultaneously completed through a single pressing process at one station, improving the assembly efficiency of the leaf spring assembly.

[0030] In a preferred embodiment, the present invention slidably mounts two support blocks 220 on a fixed seat 210, enabling the two support blocks 220 to slide along the length direction of the fixed seat 210 (i.e., the X direction in the figure), that is, in the length direction of the fixed seat 210, the support block 220 can move between a first position away from the support seat 230 and a second position close to the support seat 230. The support member on the support block 220 moves with the support block 220 to approach or move away from the support seat 230. Specifically, two baffles 2101 are protrudingly provided on the fixed block 210, and a chute is formed between the two baffles 2101. The support block 220 is placed in the chute, and a cover plate is fixed to the top of each baffle 2101 to prevent the support block 220 from detaching from the top of the baffle 2101. The extending direction of the baffle 2101 is consistent with the length direction of the fixed seat 210. In this way, the extending direction of the chute is consistent with the length direction of the fixed seat 210, and the support block 220 can slide along the chute; meanwhile, the support assembly further includes two pushing components, which are respectively arranged corresponding to the two support blocks 220. When the support seat 230 is pushed downward by the pressing head 111, the pushing component is pushed by the support seat 230, and it can drive the support block 220 to generate a small displacement amount towards the support seat 230, that is, to move from the above-mentioned first position towards the second position. That is to say, the support member on the support block 220 moves towards the support seat 230. In this way, during the bending process of the clamp 91, the clamp 91 moves downward with the support seat 230, and its end is supported by the support member and bent. During the downward movement of the clamp 91, the support member pushes the bent part of the clamp 91 towards the support seat 230, accelerating the bending speed of the clamp 91, and at the same time, ensuring that the angle of the bent part of the clamp 91 is 90°;Specifically, the pushing component includes a movable rod 240, a movable member 280, and a movable seat 270. The movable rod 240 is installed at the end of the fixed seat 210, that is, outside the support block 220. The movable member 280 is located below the support block 220 and can slide along the length direction of the fixed seat 210. The movable seat 270 is installed on the support seat 230. The middle part of the movable rod 240 is hinged to the fixed seat 210 through a pivot 2102 to form a lever structure. The top of the movable rod 240 abuts against the outside of the support block 220, and the bottom abuts against the outside of the movable member 280. When the support seat 230 receives a downward pushing force from the pressing sleeve 120, the support seat 230 moves downward, driving the movable seat 270 to move downward. During the downward movement of the movable seat 270, it can push the movable member 280 outward. In this way, the pushing force is transmitted to the movable block 220 through the movable rod 240, and the direction of the pushing force is reversed to push the movable block 220 inward. Then, the movable block 220 drives the support member inside the air to move toward the support seat 230. Thus, through the horizontally moving support member, when bending the clamping hoop 91, the bending part of the clamping hoop is extruded to ensure that the angle of the clamping hoop 91 after bending reaches 90°, overcoming the defect that the bending angle of the clamping hoop is greater than 90° due to the springback of the metal sheet after bending. To improve the bending accuracy of the clamping hoop 91, a first adjusting bolt 241 is screwed at the top end of the movable rod 240, and a second adjusting bolt 242 is screwed at the bottom end of the movable rod 240. The first adjusting bolt 241 abuts against the outside of the movable block 220, and the second adjusting bolt 242 abuts against the outside of the movable member 280. When the angle of the clamping hoop 91 after bending is greater than 90°, rotate the first adjusting bolt 241 and the second adjusting bolt 242 to move them inward by a certain distance. On the contrary, when the bending angle is less than 90°, rotate the first adjusting bolt 241 and the second adjusting bolt 242 to move them outward by a certain distance.;

[0031] In addition, in order to achieve a better bending effect, in the present invention, after the support base 230 moves downward by a certain displacement, the support base 230 starts to drive the movable seat 270 to move downward. In this way, after the support member pre-bends the clamp 91 by a certain angle, the support member is laterally displaced to extrude the bent portion of the clamp 91. Specifically, the support base 230 of the present invention includes a rod portion 233 and a support table 232 located at the top of the rod portion 232. The support table 232 extends radially outward from the top of the rod portion 233, that is, the outer diameter of the support table 232 is larger than the outer diameter of the rod portion 233. The movable seat 270 is sleeved outside the rod portion 233. An inclined surface 271 is provided on each side of the movable seat 233. The inclined surface 271 gradually inclines toward the rod portion 233 from top to bottom. The two inclined surfaces 271 are respectively matched with the inner ends of the two movable members 280. When the support base 230 starts to move downward, the movable seat 270 remains in place, and at this time, the pushing assembly is not triggered. When the support base 230 moves downward until the support table 232 contacts the upper end surface of the movable seat 270, the movable seat 270 moves downward under the drive of the support base 230. The inclined surface 271 thereon pushes the movable member 280. Through the change of direction of the inclined surface 271, the downward displacement of the movable seat 270 is converted into the displacement of the movable member 280 moving outward along the length direction of the fixed seat 210, so that the movable rod 240 swings, causing the movable block 220 to move inward. In addition, the top of the support base 230 is provided with a support table 232 with a larger outer diameter, so that the support surface formed on the upper surface of the support table 232 can better support and position the rivet, the clamp, and the leaf spring. In addition, a positioning groove 231 similar to the shape of the rivet head of the rivet can be provided on the upper surface of the support table 232. Of course, in order to avoid the situation of jamming when the inclined surface 271 pushes the movable member 280, the inner end of the movable member 280 can be set as an inclined surface 281, and this inclined surface 281 also gradually inclines toward the rod portion 233 from top to bottom. In the present invention, the outer side of the movable seat 270 can also be set as a conical shape with a gradually decreasing diameter from top to bottom. In this way, even when the movable seat 270 rotates, it can still push the movable member 280 through the conical surface on its outer surface. In addition, an installation hole 2103 is provided on the fixed seat 210. The above-mentioned movable seat 270 is placed in the installation hole. A limiting step 2104 is provided on the side wall of the installation hole 2103. This limiting step 2104 is used to limit the movable seat 270 when the movable seat 270 moves downward with the support base 230, so as to limit its maximum downward displacement amount and prevent it from moving below the movable member 280 and causing jamming.

[0032] In addition, to facilitate the installation of the spring 260 and enable the spring 260 to provide a better resilient supporting force to the supporting seat 230, in the present invention, a connecting seat 290 is fixed to the lower end of the rod portion 233. At the same time, a bottom plate 250 is fixed below the fixed seat 210 by a plurality of screw rods 251, and the spring 260 is placed between the bottom plate 250 and the connecting seat 290. In other embodiments, an elastic reset member such as an elastic rubber block may be used to replace the above-mentioned spring 260. The elastic reset member may be placed between the bottom plate 250 and the connecting seat 290, or other structures may be used to install the elastic reset member. In short, as long as the elastic reset member can apply an upward elastic stress to the supporting seat 230 to ensure that the supporting seat 230 can return to its initial position after the riveting and bending actions are completed.

[0033] In this preferred embodiment, the support member of the present invention is a roller 221. The roller 221 is placed at the inner end of the support block 220 and is pivotally connected to the support block 220 by a pivot. When preparing for riveting, both ends of the clamp are respectively placed on the rollers 221 on the two support blocks 220. During the bending process, the clamp is squeezed by the rollers 221, and it cooperates with the surface of the clamp in a rolling friction manner, reducing the frictional resistance when the clamp moves downward, and at the same time, avoiding damage to the surface of the clamp.

[0034] During the riveting process, the rivet 92 is pressed downward by the pressure head 111 to deform the rivet 92 so as to rivet the clamp 91 and the leaf spring 90 together. The pressing surface 122 at the lower end of the pressing sleeve 120 cooperates with the supporting surface at the top of the supporting seat 230 to clamp the leaf spring 90 and the clamp 91. On the premise of accurately controlling the deformation amount of the rivet 92, the pressure rod 110 and the pressing sleeve 120 can be fixedly matched. However, in the actual processing process, since the deformation amount of the rivet 92 is difficult to determine, therefore, in the present invention, the pressing sleeve 120 is movably sleeved outside the pressure rod 110, and an elastic buffer is arranged between the two of them. The elastic buffer is used to provide an elastic stress that will always push the pressing sleeve 120 downward. That is to say, the pressure rod 110 is rigidly matched with the power output end of the driving unit, and the pressing sleeve 120 is flexibly matched with the power output end of the driving unit. The pressure rod 110 drives the pressure head 111 to press the rivet 92 downward. When the pressure head 111 contacts the rivet 92, the pressing surface 122 is pressed on the leaf spring 90, or there is only a tiny gap between the pressure head 111 and the leaf spring 90. That is to say, before the rivet 92 is completely deformed into the shape of riveting the clamp 91 and the leaf spring 90, the pressing surface 122 contacts the upper surface of the leaf spring 90 to cooperate with the supporting surface on the supporting seat 230 to clamp the leaf spring 90 and the clamp 91. During the process that the pressure head 111 continuously pushes the rivet 92 downward, since the elastic buffer plays a buffering role on the pressing sleeve 120, it avoids the pressing sleeve 120 moving downward to damage the leaf spring 90 and the clamp 91, and at the same time ensures that the pressure head 111 continuously presses the rivet 92 to ensure that the rivet 92 is fully deformed. An upper supporting plate 113 is fixedly installed at the top of the pressure rod 110, and a lower supporting plate 121 is fixed at the top of the pressing sleeve 120. The lower supporting plate 121 is located below the upper supporting plate 113. The pressure rod 110 passes through a hole preset on the lower supporting plate 121 into the pressing sleeve 120. The elastic buffer is installed between the upper supporting plate 113 and the lower supporting plate 121. In this way, the upper supporting plate 113 and the lower supporting plate 121 are used to provide an installation basis for the elastic buffer to facilitate the installation of the elastic buffer. The output end of the driving unit is connected to the upper supporting plate 113. It should be noted that the driving unit of the present invention preferably adopts a hydraulic cylinder, and the telescopic rod of the hydraulic cylinder is fixed on the upper supporting plate 113. Of course, the driving unit can also adopt a pneumatic cylinder, or other driving units powered by electricity. In short, as long as it can push the pressing assembly 100 to move up and down. The above-mentioned elastic buffer may include a plurality of air springs 130. The plurality of air springs 130 are evenly distributed on the outer periphery of the pressure rod 110. The upper end of the air spring 130 is connected to the upper supporting plate 113, and the lower end is connected to the lower supporting plate 121. Using a plurality of air springs 130 to form an elastic buffer can provide a large elastic buffer force, so that the pressing surface 122 and the supporting surface fully clamp the leaf spring 90 and the clamp 91, and avoid the leaf spring 90 and the clamp 91 from shifting during the riveting and bending processes.The elastic buffer can also be other elastic components, such as elastic rubber blocks, springs, etc.

[0035] The indenter 111 of the present invention is fixed to the lower end of the pressure rod 110 in a detachable manner. In this way, when the indenter 111 is deformed or damaged, the indenter 111 can be conveniently disassembled and replaced with a new one. Specifically, the top of the indenter 111 is inserted into the installation groove opened on the lower end surface of the pressure rod 110. A machine screw 112 extending radially along the pressure rod 110 is provided on the pressure rod 110. The machine screw 112 penetrates into the installation groove from the outside to the inside and presses against the indenter 111. By tightening the machine screw 112, the indenter 111 can be tightened to fix the indenter 111 to the pressure rod 110. When replacing the indenter 111, just loosen the machine screw 112. In addition, for the convenience of operation and to avoid the influence of the machine screw 112 on the relative movement between the pressure sleeve 120 and the pressure rod 110, an avoidance groove 1201 for avoiding the machine screw 112 is provided on the pressure sleeve 120.

[0036] Combined Figure 4 , 5 As shown in the figure, when riveting the present invention, the rivet cap of the rivet 92 is placed downward in the groove 231, and the clamp 91 and the leaf spring 90 are successively placed on the support seat 230, so that the rivet 92 passes through the rivet holes on the clamp 91 and the leaf spring 90. Start the driving unit to drive the pressing assembly 100 to move downward. The indenter 111 presses down the rivet 92. The pressure sleeve 120 and the support seat 230 clamp the leaf spring 90 and the clamp, and use the downward movement of the indenter 111 to push the support seat 230 downward. The two ends of the clamp 91 are respectively jacked up by the two rollers 221. During the continuous downward movement of the support seat 230, the top-pushing assembly is triggered to make the rollers 221 move horizontally inward, and the bent part on the clamp 91 is pushed inward, finally ensuring that the bending angle on the clamp 91 reaches 90°. After one riveting and bending are completed, the driving unit drives the pressing assembly 100 to move upward to the initial position, and at the same time, the spring 260 rebounds to push the support seat 230 to the initial position.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Leaf spring assembly riveting device, Characterized in that, It includes a support assembly, a pressing assembly located above the support assembly, and a driving unit for driving the pressing assembly to move up and down; The support assembly includes a fixed seat, two support blocks, a support seat, and an elastic reset member. The two support blocks are both installed on the fixed seat and are arranged oppositely, and one support member is respectively provided at the opposite ends of the two support blocks. The two support members respectively support under the two ends of the clamp. The support seat is located between the two support members and can move along the height direction of the fixed seat. The upper surface of the support seat forms a support surface for supporting the rivet, the leaf spring, and the middle part of the clamp. The elastic reset member is used to provide an elastic stress for pushing the support seat upward; The pressing assembly includes a pressure rod extending along the height direction and a pressure sleeve sleeved outside the pressure rod. A pressure head for pressing the rivet is fixed at the lower end of the pressure rod and is located directly above the support seat. The lower end surface of the pressure sleeve forms a pressing surface, and the pressing surface cooperates with the support seat to form a clamping mechanism for clamping the leaf spring and the clamp; The two support blocks are slidably matched with the fixed seat, and both of the two support blocks can move between a first position away from the support seat and a second position close to the support seat along the length direction of the fixed seat; the support assembly further includes two top-pushing components respectively corresponding to the two support blocks one by one. The top-pushing component is used to push the corresponding support block to move from the first position to the second position when the support seat moves downward; The top-pushing component includes a movable rod located outside the support block, a movable member located below the support block and slidable along the length direction of the fixed seat, and a movable seat installed on the support seat. The middle part of the movable rod is hinged on the fixed seat. The top of the movable rod abuts against the outside of the support block, and the bottom abuts against the outside of the movable member. The inside of the movable member abuts against the movable seat, and the movable seat is used to push the movable member outward when the support seat moves downward; A first adjusting bolt abutting against the outside of the support block is screwed on the top of the movable rod, and a second adjusting bolt abutting against the outside of the movable member is screwed on the bottom of the movable rod.

2. The leaf spring assembly riveting device according to claim 1, Characterized in that, The pressure sleeve is movably sleeved on the pressure rod, and an elastic buffer member is arranged between the pressure rod and the pressure sleeve. The elastic buffer member is used to provide an elastic stress for pushing the pressure sleeve downward.

3. The leaf spring assembly riveting device according to claim 2, Characterized in that, An upper support plate is fixed at the top end of the pressure rod, a lower support plate located below the upper support plate is fixed at the top end of the pressure sleeve, the elastic buffer member is installed between the upper support plate and the lower support plate, and the output end of the driving unit is connected to the upper support plate.

4. The leaf spring assembly riveting device according to claim 3, Characterized in that, The elastic buffer member includes a plurality of air springs evenly distributed on the outer periphery of the pressure rod. The upper end of the air spring is connected to the upper support plate, and the lower end is connected to the lower support plate.

5. The leaf spring assembly riveting device according to claim 1, Characterized in that, The pressure head is fixed to the lower end of the pressure rod in a detachable manner.

6. The leaf spring assembly riveting device according to claim 5, Characterized in that, The top of the indenter is inserted into the installation groove opened on the lower end surface of the pressure bar. A grub screw is provided on the pressure bar and extends radially along it to press and fix the indenter on the pressure bar. An avoidance groove for avoiding the grub screw is provided on the pressure sleeve.

7. The leaf spring assembly riveting device according to claim 1, characterized in that, The support member is a roller pivotally connected to the inner side of the support block.

8. The leaf spring assembly riveting device according to claim 1, characterized in that, The support seat includes a rod portion extending in the height direction and a support platform radially extending outward from the top end of the rod portion. The movable seat is sleeved on the rod portion. Two inclined surfaces are respectively provided on both sides of the movable seat. The inclined surfaces are gradually inclined towards the rod portion from top to bottom, and the two inclined surfaces are respectively used to push the inner sides of the two movable members.

9. The leaf spring assembly riveting device according to claim 8, characterized in that, An installation hole is opened on the fixed seat. The movable seat is placed in the installation hole. A limit step for defining the maximum displacement of the downward movement of the movable seat is provided on the side wall of the installation hole.

10. The leaf spring assembly riveting device according to claim 8, characterized in that, A connecting seat is fixed to the lower end portion of the rod portion. A bottom plate is connected below the fixed seat. The elastic resetting member is a spring installed between the bottom plate and the connecting seat.

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