Pre-pressing device for automobile steel plate spring machining

Abstract

The utility model relates to the field of steel plate spring production equipment, in particular to a pre-pressing device for automobile steel plate spring machining. The pre-pressing device comprises a rack; the pressing head is mounted on the rack; the lifting frame is mounted on the rack in a liftable manner and is configured to drive the steel plate spring to be close to or away from the pressing head; the feeding mechanism comprises an annularly-arranged conveying belt, a mounting box fixed to the conveying belt, a limiting disc fixed to the mounting box, a mounting disc rotationally connected with the limiting disc, a clamping base fixed to the mounting disc and an electric motor driving the clamping base to rotate. The electric motor is installed in the installation box, and a motor shaft of the electric motor is connected with the installation disc. According to the pre-pressing device for machining the automobile steel plate spring, manual feeding is replaced with the feeding mechanism, the labor intensity of workers can be reduced, and the feeding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of leaf spring production equipment, in particular to a pre-pressing device for processing automobile leaf springs. Background Art

[0002] Leaf spring is the most widely used elastic element in automobile suspension. It is an elastic beam of approximately equal strength composed of several alloy spring leaves of equal width but unequal length (the thickness can be equal or unequal).

[0003] During the processing of leaf springs, the raw alloy spring sheets are cut → processed with center holes and rivet holes → processed with sheet ends → punched for positioning bulges → rolled ears and wrapped ears → quenched → tempered → pressure tested, and then assembled into the final product. At the same time, after the assembly is completed, the assembled leaf springs need to be pre-pressed to eliminate the assembly gap between each spring sheet and ensure that each spring sheet can fit closely and work together. However, in actual use, the assembled leaf springs are manually fed, which is labor-intensive and has low feeding efficiency.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0005] In order to improve or solve the technical problems of manual feeding in the prior art, which is labor-intensive and has low feeding efficiency, the utility model provides a pre-pressing device for processing automobile leaf springs. The pre-pressing device includes: a frame; a pressure head, which is installed on the frame; a lifting frame, which can be lifted and lowered on the frame and is configured to drive the leaf spring close to or away from the pressure head; a feeding mechanism, including a conveyor belt arranged in an annular shape, a mounting box fixed on the conveyor belt, a limit plate fixed on the mounting box, a mounting plate rotatably connected to the limit plate, a clamping seat fixed on the mounting plate, and an electric motor that drives the clamping seat to rotate; the electric motor is installed in the mounting box, and the motor shaft of the electric motor is connected to the mounting plate.

[0006] Furthermore, a flat key is arranged on the motor shaft of the electric motor, and a keyway matching the flat key is arranged on the mounting plate.

[0007] Furthermore, the limiting plate includes a fixing portion fixedly connected to the installation box and a limiting portion formed on the fixing portion; the limiting portion is sleeved on the circumferential outer side of the installation plate.

[0008] Furthermore, the clamping seat includes a base plate connected to the mounting plate and a support plate installed on the base plate, and two support plates are arranged opposite to each other; a connecting column is arranged between the two support plates, and a positioning column matching the fixing bolts on the leaf spring is arranged in the middle position of the connecting column.

[0009] Furthermore, a through hole matching the positioning column is formed on the connecting column, and a limiting ring is arranged on the positioning column, and the diameter of the limiting ring is larger than the diameter of the through hole.

[0010] Furthermore, the lifting frame includes a first arm and a second arm arranged relatively to each other, and supporting blocks are slidably arranged on the first arm and the second arm; a sliding groove for accommodating the sliding of the supporting block is opened in the first arm, and a rodless cylinder for driving the supporting block to slide is arranged in the sliding groove.

[0011] Furthermore, a support block slidably connected to the supporting block is arranged in the slide groove, and a pulley is arranged on the support block.

[0012] Furthermore, a V-shaped groove is provided on the supporting block.

[0013] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) By setting a feeding mechanism, the clamping seat is used to support the leaf spring, and the conveyor belt is used to drive the support seat to move, so as to transport the leaf spring to the lifting frame; the installation box is fixedly connected to the conveyor belt, and the clamping seat is rotatably connected to the installation box. When the leaf spring is transported, the extension direction of the leaf spring can be consistent with the direction of the conveyor belt to prevent the leaf spring from colliding with debris during the feeding process; when the leaf spring is transported to the lifting frame, the electric motor can drive the clamping seat to rotate, so that the leaf spring rotates 90 degrees, so that the lifting seat can drive the leaf spring to rise and fall; the feeding mechanism replaces manual feeding, which can reduce the labor intensity of workers and improve feeding efficiency;

[0015] (2) By providing a supporting block and a rodless cylinder, the position of the supporting block can be adjusted more conveniently to adapt to leaf springs of different lengths, thereby improving the application range of the preload device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a schematic diagram of an embodiment of a preloading device for processing an automobile leaf spring according to the utility model;

[0018] Figure 2This is a schematic diagram of the cooperation between a supporting block and a lifting frame in a preloading device for processing an automobile leaf spring according to the utility model;

[0019] Figure 3 The utility model is a schematic diagram of a feeding mechanism in a preloading device for processing an automobile leaf spring.

[0020] List of reference numerals: 1. frame; 11. protective curtain; 2. lifting frame; 21. first arm; 22. second arm; 23. hydraulic cylinder; 24. supporting block; 25. rodless cylinder; 26. supporting block; 3. pressing head; 41. loading platform; 411. mounting seat; 412. shell; 42. conveyor belt; 43. mounting box; 431. connecting block; 44. limiting plate; 441. fixing part; 442. limiting part; 45. mounting plate; 46. clamping seat; 461. bottom plate; 462. supporting plate; 47. electric motor; 48. connecting column; 49. positioning column; 491. limiting ring. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0022] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In order to improve or solve the technical problems of manual feeding in the prior art, which is labor-intensive and has low feeding efficiency, the utility model provides a pre-pressing device for automobile leaf spring processing. The pre-pressing device includes: a frame 1; a pressure head 3, which is installed on the frame 1; a lifting frame 2, which is installed on the frame 1 and can be lifted and lowered, and is configured to drive the leaf spring to approach or move away from the pressure head 3; a feeding mechanism, including a conveyor belt 42 arranged in an annular shape, a mounting box 43 fixed on the conveyor belt 42, a limit plate 44 fixed on the mounting box 43, a mounting plate 45 rotatably connected to the limit plate 44, a clamping seat 46 fixed on the mounting plate 45, and an electric motor 47 for driving the clamping seat 46 to rotate; the electric motor 47 is installed in the mounting box 43, and the motor shaft of the electric motor 47 is connected to the mounting plate 45.

[0025] Figure 1 This is a schematic diagram of an embodiment of a preloading device for processing an automobile leaf spring according to the utility model. Figure 1 As shown, in one or more embodiments, the utility model provides a pre-pressing device for processing an automobile leaf spring, comprising a frame 1, a lifting frame 2, a pressing head 3 and a feeding mechanism.

[0026] Continue to see Figure 1 In one or more embodiments, the frame 1 is roughly gantry-shaped. The frame 1 includes two columns arranged side by side and a crossbeam connecting the two columns. Protective curtains 11 are arranged on both the front and rear sides of the frame 1. Specifically, the protective curtains 11 are suspended on the frame 1 by hanging ropes. An opening is provided on the protective curtain 11, and the opening faces the feeding mechanism to facilitate the feeding of the leaf spring.

[0027] Figure 2 This is a schematic diagram of the cooperation between the support block and the lifting frame in a preloading device for processing automobile leaf springs of the utility model. Figure 1 and Figure 2As shown, the lifting frame 2 can be lifted and lowered on the frame 1. In one or more embodiments, the lifting frame 2 includes a first arm 21, a second arm 22 and a connecting arm. The first arm 21 and the second arm 22 are symmetrically arranged and both are roughly L-shaped. The connecting arm connects the first arm 21 and the second arm 22. Further, the connecting arm is connected with a hydraulic cylinder 23. Specifically, the hydraulic cylinder 23 is installed on the frame 1, and the hydraulic shaft of the hydraulic cylinder 23 passes through the frame 1 and is connected to the connecting arm. Further, two hydraulic cylinders 23 are provided, and the two hydraulic cylinders 23 are symmetrically arranged. Further, a supporting block 24 is slidably arranged on the first arm 21 and the second arm 22. The following is an explanation taking the first arm 21 as an example. A slide groove for accommodating the sliding of the supporting block 24 is provided on the first arm 21, and a rodless cylinder 25 for driving the supporting block 24 to slide is arranged in the slide groove. Specifically, the slide is a roughly rectangular groove, the rodless cylinder 25 is fixed at the bottom of the slide, the support block 24 is arranged above the rodless cylinder 25, and the two are connected by a slider. The rodless cylinder 25 drives the slider to slide, and then drives the support block 24 to slide. Further, support blocks 26 are arranged on both sides of the rodless cylinder 25, and pulleys are arranged on the support blocks 26. The pulleys support the support blocks 24 and reduce the friction between the support blocks 26 and the support blocks 24. Further, a V-shaped groove is arranged on the top of the support block 24, and the V-shaped groove is used to support the leaf spring. Specifically, a support column is inserted into the coil ear of the leaf spring, and the support column matches the V-shaped groove. Further, the pressure head 3 is fixedly installed on the frame 1, and one end of the pressure head 3 passes through the connecting arm. When the feeding mechanism transports the leaf spring to the lifting frame 2, the hydraulic cylinder 23 drives the lifting frame 2 to rise, and then drives the leaf spring to rise, and the positioning column 49 on the leaf spring is just placed in the V-shaped groove; the leaf spring continues to rise under the drive of the lifting frame 2, approaches the pressure head 3, and abuts against the pressure head 3, thereby achieving pre-compression of the leaf spring; then, the hydraulic cylinder 23 drives the lifting frame 2 to move downward, away from the pressure head 3, and places the leaf spring on the feeding mechanism.

[0028] Figure 3 This is a schematic diagram of a feeding mechanism in a preloading device for processing automobile leaf springs according to the utility model. Figure 1 and Figure 3As shown, in one or more embodiments, the feeding mechanism includes a feeding platform 41 extending in a direction perpendicular to the frame 1, a conveyor belt 42 installed in the feeding platform 41, a mounting box 43 connected to the conveyor belt 42, a limit plate 44 fixed on the mounting box 43, a mounting plate 45 rotatably connected to the limit plate 44, a clamping seat 46 fixed on the mounting plate 45, and an electric motor 47 driving the clamping seat 46 to rotate. Specifically, the feeding platform 41 is roughly rectangular box-shaped, and the feeding platform 41 includes a mounting seat 411 and a shell 412 arranged at the bottom of the mounting seat 411. Among them, the mounting seat 411 is used to install the conveyor belt 42 and the mounting box 43, and the shell 412 is used to accommodate the clamping seat 46. Further, the upper and lower sides of the mounting seat 411 are provided with a slide groove matching the mounting box 43, and the mounting box 43 moves on the mounting seat 411 along the slide groove direction. Further, the conveyor belt 42 is arranged in a ring shape, and two are provided. The two conveyor belts 42 are respectively arranged on the left and right sides of the installation box 43. Specifically, an active roller, a driven roller and a motor are arranged at the end of the loading platform 41, and the conveyor belt 42 is sleeved on the active roller and the driven roller. The motor drives the active roller to rotate, and then drives the conveyor belt 42 to move. Further, a connecting block 431 is arranged on the installation box 43, and the connecting block 431 is locked on the conveyor belt 42. Specifically, the connecting block 431 can have a built-in clamping structure and be locked on the conveyor belt 42; it can also be directly locked on the conveyor belt 42 by connecting parts such as bolts, and the specific structure is no longer limited here. Further, the installation box 43 is in the shape of a hollow box, and the electric motor 47 is installed in the installation box 43. The motor shaft of the electric motor 47 extends out of the installation box 43, and a flat key is arranged on the motor shaft. Further, the limiting plate 44 is installed on the installation box 43, and the limiting plate 44 includes a fixing portion 441 fixedly connected to the installation box 43 and a limiting portion 442 formed on the fixing portion 441. The fixing portion 441 is roughly disc-shaped and is fixedly connected to the installation box 43 by bolts. The limiting portion 442 is roughly cylindrical and is sleeved on the circumferential outer side of the installation plate 45. Further, the installation plate 45 is roughly disc-shaped. The installation plate 45 is provided with a keyway matching the flat key. When the electric motor 47 rotates, it drives the installation plate 45 to rotate, and then drives the clamping seat 46 to rotate. Further, the clamping seat 46 includes a bottom plate 461 connected to the installation plate 45 and a support plate 462 installed on the bottom plate 461, and two support plates 462 are arranged relatively, and a connecting column 48 is arranged between the two support plates 462. The connecting column 48 can enhance the stability of the clamping seat 46. Furthermore, a positioning column 49 matching with the fixing bolt on the leaf spring is arranged in the middle of the connecting column 48. A through hole is provided on the positioning column 49, and the through hole matches with the fixing bolt. The positioning column 49 is located in the middle of the leaf spring, and the connecting column 48 is located in the middle of the clamping seat 46, which can conveniently align the leaf spring and the clamping seat 46 for subsequent pre-compression.Furthermore, a through hole is provided on the connecting column 48, and a limiting ring 491 is provided on the positioning column 49, and the diameter of the limiting ring 491 is larger than the diameter of the through hole to prevent the positioning column 49 from being separated from the connecting column 48. Specifically, the positioning column 49 includes a first half and a second half that are detachably connected, and a limiting ring 491 is arranged on each of the first half and the second half, and the limiting ring 491 is respectively located on both sides of the connecting column 48 by cooperation. The first half and the second half are detachably connected by a threaded structure. When it is necessary to convey the leaf spring, the clamping seat 46 is arranged longitudinally, and the extension direction of the leaf spring is consistent with the conveying direction. The conveyor belt 42 drives the clamping seat 46 to move toward the lifting frame 2; when reaching the lifting frame 2, the electric motor 47 is remotely started by the remote control, driving the mounting plate 45 to rotate, and then driving the clamping seat 46 to rotate, and the leaf spring rotates to be consistent with the length direction of the lifting frame 2, and then the lifting frame 2 drives the leaf spring to be pre-compressed.

[0029] So far, the technical scheme of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical schemes after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A preloading device for automobile leaf spring processing, characterized in that: include: Rack (1); A pressure head (3) is mounted on the frame (1); A lifting frame (2) is installed on the frame (1) in a liftable manner and is configured to drive the leaf spring to move closer to or away from the pressure head (3); The feeding mechanism comprises a conveyor belt (42) arranged in an annular shape, a mounting box (43) fixed on the conveyor belt (42), a limiting plate (44) fixed on the mounting box (43), a mounting plate (45) rotatably connected to the limiting plate (44), a clamping seat (46) fixed on the mounting plate (45), and an electric motor (47) for driving the clamping seat (46) to rotate; the electric motor (47) is installed in the mounting box (43), and the motor shaft of the electric motor (47) is connected to the mounting plate (45).

2. A preloading device for processing an automobile leaf spring according to claim 1, characterized in that: A flat key is arranged on the motor shaft of the electric motor (47), and a keyway matching the flat key is arranged on the mounting plate (45).

3. The preloading device for processing an automobile leaf spring according to claim 1, characterized in that: The limiting plate (44) comprises a fixing portion (441) fixedly connected to the installation box (43) and a limiting portion (442) formed on the fixing portion (441); the limiting portion (442) is sleeved on the circumferential outer side of the installation plate (45).

4. The preloading device for processing an automobile leaf spring according to claim 1, characterized in that: The clamping seat (46) includes a base plate (461) connected to the mounting plate (45) and a support plate (462) mounted on the base plate (461), wherein two support plates (462) are arranged opposite to each other; a connecting column (48) is arranged between the two support plates (462), and a positioning column (49) matching the fixing bolt on the leaf spring is arranged in the middle position of the connecting column (48).

5. The preloading device for processing an automobile leaf spring according to claim 4, characterized in that: A through hole matching the positioning column (49) is provided on the connecting column (48), and a limiting ring (491) is arranged on the positioning column (49), wherein the diameter of the limiting ring (491) is larger than the diameter of the through hole.

6. The preloading device for processing an automobile leaf spring according to claim 1, characterized in that: The lifting frame (2) comprises a first support arm (21) and a second support arm (22) which are arranged opposite to each other, and a supporting block (24) is slidably arranged on the first support arm (21) and the second support arm (22); a sliding groove for accommodating the sliding of the supporting block (24) is provided in the first support arm (21), and a rodless cylinder (25) is arranged in the sliding groove for driving the supporting block (24) to slide.

7. A preloading device for processing an automobile leaf spring according to claim 6, characterized in that: A support block (26) slidably connected to the supporting block (24) is also arranged in the slide groove, and a pulley is arranged on the support block (26).

8. The preloading device for processing an automobile leaf spring according to claim 6, characterized in that: The supporting block (24) is provided with a V-shaped groove.

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