Buffering frame structure for automobile part machining workpieces
By designing a buffer rack structure with a buffer spring support plate, silicone pad limiting, and adjustable auxiliary support, the problem of damage to rod-shaped workpieces during the buffering process was solved, achieving stable support and flexible storage of workpieces, thereby improving production efficiency and workpiece quality.
Patent Information
- Application Number
- CN202511962241.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-02-27
AI Technical Summary
In the use of existing automotive parts processing workpiece buffer racks, rod-shaped workpieces are prone to rolling and collision due to vibration, resulting in damage to precision machined surfaces, and are difficult to adapt to the stable storage of workpieces of different lengths.
A buffer rack structure was designed, which uses a buffer spring support plate frame and a silicone pad limiting component, combined with an adjustable auxiliary support and an airbag pad, to provide flexible support and stable positioning, prevent workpiece rolling and friction damage, and facilitate handling through the through slot.
It effectively reduces scratches and damage to workpieces during storage and retrieval, improves the versatility and space utilization of the buffer rack, and enhances the flexibility and safety of the production line.
Smart Images
Figure CN121572255A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of buffer rack structures, in particular to a buffer rack structure for automobile part machining workpieces. BACKGROUND
[0002] In an automobile part precision machining production line, a buffer rack is a key logistics equipment for connecting upper and lower processes, balancing production rhythm and temporarily storing workpieces to be machined or machined. Its performance directly affects production efficiency, workpiece quality and production cost.
[0003] At present, the general-purpose racks or simple welding type buffer racks commonly used in workshops have the following significant defects, especially in the rod-shaped parts of automobile parts.
[0004] Most of the racks use metal mesh plates, ordinary steel beams or rough welded edges or use supports with simple V-shaped grooves or notches to horizontally place the rods. The rods may still roll in the V-shaped groove due to slight external force, such as vibration caused by the passing of a forklift, causing collision with each other or rolling out of the groove. When the rods are stored, transferred or subjected to slight vibration of the equipment, the precision machined surfaces such as rod matching surfaces, sealing surfaces and threads are prone to direct friction and scratching with hard support structures, resulting in scratches, fuzz and even indentations. This not only damages the surface quality of the workpiece, but also requires additional polishing or rework processes in the subsequent process. In severe cases, it may cause size to be out of tolerance, directly leading to the scrap of the rod. Therefore, a buffer rack structure for automobile part machining workpieces is needed to solve the above problems. SUMMARY
[0005] The purpose of the present application is to solve the problems raised in the background art.
[0006] In order to achieve the above purpose, the application adopts the following technical scheme: A buffer rack structure for automobile part machining workpieces, comprising a buffer rack disc, the buffer rack disc comprises a bottom supporting plate, two supporting frames are symmetrically connected to the left and right sides of the bottom supporting plate at the bottom end, side supporting frames are arranged on the left and right sides of the top end of the bottom supporting plate, and a plurality of limiting components for limiting support are installed on the surface of the side supporting frames at equal intervals, and a concave surface is formed on the surface of the bottom supporting plate, and an adjusting component for auxiliary support is movably arranged in the concave surface. The limiting component comprises a base fixed on the top surface of the side supporting frame, side plates A are connected to the left and right sides of the top end of the base, supporting plate frames are arranged on the inner end surface of the side plates A, and silica gel pads are attached to the inner wall of the supporting plate frames.
[0007] Preferably, the left side of the bottom plate concave is provided with an inclined lower groove, and two strip-shaped grooves are provided at the edge of the bottom plate concave. The arrangement of the inclined lower groove and the strip-shaped groove provides structural convenience for the overturning operation of the placing plate. When it is needed to convert the buffer frame into a flat workbench or place a plate-shaped workpiece, the edge plate can be easily pried up through the lower groove to realize the quick overturning and function switching of the frame plate. The concave design of the bottom plate can not only accommodate the adjusting assembly, but also collect the possible falling debris or coolant for easy cleaning. The symmetrical support frames on both sides not only provide stable support, but also form a through groove structure between the support frames and the bottom plate, which facilitates the insertion of the forklift fork to realize the quick handling of the whole frame and is suitable for flexible scheduling between processes in the workshop.
[0008] Preferably, the bottom end of the support plate frame is connected with a bottom insertion shaft, and the bottom end of the bottom insertion shaft is inserted into the inside of the base through a buffer hole. The bottom end surface of the bottom insertion shaft and the inner end surface of the buffer hole of the base are connected and fixed by a buffer spring. In the limiting component, the support plate frame adopts a V-shaped structure and is provided with a flat section at the bottom. It can not only stably support cylindrical rod members, but also be suitable for workpieces with flat or special-shaped cross sections. The bottom insertion shaft and the buffer spring form a vertical buffer system, which can effectively absorb the impact energy when the workpiece is placed.
[0009] Preferably, two limiting blocks are symmetrically installed on the left and right sides of the support plate frame, and the limiting blocks are movably installed in the inside of the side plate A through guide grooves. The cooperation of the limiting blocks and the guide grooves in the side plate A limits the horizontal displacement of the support plate frame, ensures that it only moves in the vertical direction, and avoids the lateral sliding of the workpiece.
[0010] Preferably, the support plate frame as a whole adopts a V-shaped structure, the V-shaped bottom end surface of the support plate frame adopts a flat structure, and the V-shaped side top ends of the support plate frame are all provided with extended vertical plate ends.
[0011] Preferably, the adjusting assembly includes two placing frame plates movably installed at the concave of the bottom plate. The left side of each placing frame plate is connected with an edge plate, and the top end of each placing frame plate is connected with a side stand. The inner end surface of the side stand is provided with a plurality of guide shafts, and the two guide shafts form a group. The surface of each guide shaft is provided with two auxiliary support parts which can be adjusted.
[0012] Preferably, the auxiliary support part includes a movable block sleeved on the surface of the guide shaft. The inner end surface of one of the movable blocks is rotatably installed with a threaded shaft, and the threaded shaft penetrates the inside of the other movable block through a threaded hole. The end of the threaded shaft is connected with a knob. The top end of each movable block is connected with a side stop. By rotating the knob to drive the threaded shaft to rotate, the spacing between the two movable blocks can be adjusted steplessly to adapt to the end support requirements of workpieces of different lengths.
[0013] Preferably, the top of the movable block is provided with a constraint frame, and the vertical plate end of the constraint frame abuts against the inner wall of the side guard. The bottom end of the constraint frame is fixed to the surface of the movable block by bolts. The airbag pad on the inner wall of the constraint frame can flexibly cover the middle section of the workpiece after inflation, which not only provides additional anti-rolling constraint, but also avoids hard contact damage to the surface of the workpiece.
[0014] Preferably, the inner wall of the constraint frame is provided with an airbag pad, and the various parts of the airbag pad are interconnected. After the airbag pad is inflated, it can wrap around the middle of the workpiece. Both the silicone pad and the airbag pad are made of flexible materials, which not only provide cushioning protection, but their high friction surface can also enhance the stability of the workpiece placement and prevent minor slippage caused by workshop vibration.
[0015] The present invention has at least the following beneficial effects: 1. This invention, by setting up a support plate frame with a buffer spring and a limiting component with a silicone pad attached to the surface, can absorb impact and reduce vibration transmission when placing rod-shaped workpieces, and avoid direct contact between the workpiece and the hard structure. This prevents the precision machined surfaces of rod-shaped workpieces, such as threads and sealing surfaces, from being scratched, indented or roughened during storage, handling and turnover, thereby reducing the rework and scrap rate.
[0016] 2. The auxiliary support in the adjustment component of the present invention can achieve bidirectional spacing adjustment through the cooperation of the threaded shaft and the movable block, supporting the stable placement of workpieces of different lengths; after the airbag is inflated, it can wrap the middle section of the workpiece to prevent it from rolling or shifting, which is suitable for the classified storage of short shafts, long shafts and irregularly shaped workpieces, improving the versatility and space utilization of the buffer rack.
[0017] 3. The bottom support plate and the support frame of the present invention are provided with a through groove, which facilitates the insertion and lifting of forklifts and other handling equipment; the placement rack plate can be flipped flat and laid flat, and after the rubber pad is laid upside down, it can be used as a temporary workbench or to place workpieces of other shapes, which enhances the emergency adaptability and usage flexibility of the buffer rack in the production line. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the external structure of a buffer rack structure for processing automotive parts according to the present invention; Figure 2 This is a schematic diagram of the flipping state structure of the adjustment component in a buffer rack structure for processing automotive parts proposed in this invention. Figure 3For the present invention Figure 2 Enlarged structural diagram of A in the middle; Figure 4 This is a three-dimensional structural diagram of the adjustment component in a buffer rack structure for processing automotive parts proposed in this invention; Figure 5 This is a three-dimensional disassembly diagram of the limiting component in a buffer rack structure for processing automotive parts proposed in this invention. Figure 6 This is a partial disassembly diagram of the adjustment component in a buffer rack structure for processing automotive parts proposed in this invention. Figure 7 This is a three-dimensional structural diagram of the auxiliary support part in a buffer rack structure for processing automotive parts proposed in this invention. Figure 8 This is a three-dimensional disassembly diagram of the limiting component in a buffer rack structure for processing automotive parts proposed in this invention.
[0020] In the picture: 1. Cache rack; 11. Base plate; 12. Support frame; 13. Side support frame; 14. Inclined lower groove; 2. Limiting component; 21. Base; 22. Side plate A; 23. Support plate frame; 24. Limiting block; 25. Bottom insert shaft; 26. Buffer spring; 27. Silicone pad; 3. Adjustment assembly; 31. Placement shelf; 32. Side plate; 33. Side stand; 34. Guide shaft; 35. Auxiliary support; 351. Movable block; 352. Side guard; 353. Constraint frame; 354. Airbag cushion; 36. Threaded shaft; 37. Knob. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0022] Reference Figures 1-8 A buffer rack structure for processing automotive parts includes a buffer rack tray 1, the buffer rack tray 1 includes a base plate 11, two support frames 12 are symmetrically connected to the left and right sides of the bottom end of the base plate 11, and side support frames 13 are provided on the left and right sides of the top end of the base plate 11. Several limiting components 2 for limiting support are installed at equal intervals on the surface of the side support frames 13. The surface of the base plate 11 has a concave surface, and an adjustment component 3 for auxiliary support is movable in the concave surface. The limiting component 2 includes a base 21 fixed to the top surface of the side support frame 13. The top left and right sides of the base 21 are connected to side plates A22, and the inner end face of the side plate A22 is provided with a support plate frame 23. The inner wall of the support plate frame 23 is fitted with a silicone pad 27.
[0023] An inclined groove 14 is provided on the left side of the concave surface of the bottom support plate 11, and two strip grooves are provided at the edge of the concave surface of the bottom support plate 11.
[0024] A bottom insertion shaft 25 is connected to the center of the bottom end of the support plate frame 23, and the bottom end of the bottom insertion shaft 25 is inserted into the base 21 through a buffer hole. The bottom end face of the bottom insertion shaft 25 is connected and fixed to the inner end face of the buffer hole of the base 21 by a buffer spring 26.
[0025] Two limiting blocks 24 are symmetrically installed on the left and right sides of the support plate frame 23, and the limiting blocks 24 are movably installed inside the side plate A22 through guide grooves.
[0026] The support frame 23 has an overall V-shaped structure. The bottom surface of the V-shape of the support frame 23 is a flat structure, and the top of the V-shaped side of the support frame 23 is provided with an extended vertical plate end.
[0027] The adjustment assembly 3 includes two placement racks 31 movably mounted on the concave surface of the base plate 11. The two placement racks 31 are connected to each other through a common left side plate 32 to form a linkage frame unit. The top of each of the two placement racks 31 is connected to a side stand 33. The frame unit is movably mounted on the concave surface of the base plate 11 through a hinge or pivot structure, so that it can be flipped relative to the base plate 11 as a whole. The inner end face of the side stand 33 is provided with a number of guide shafts 34. Two guide shafts 34 form a group. The surface of the guide shaft 34 is provided with two adjustable auxiliary supports 35.
[0028] The auxiliary support 35 includes a movable block 351 sleeved on the surface of the guide shaft 34. The movable block 351 is sleeved on the surface of the guide shaft 34 through a through hole. A threaded shaft 36 is rotatably installed on the inner end face of one of the movable blocks 351, and the threaded shaft 36 passes through the interior of the other movable block 351 through a threaded hole. A knob 37 is connected to the end of the threaded shaft 36, and side stops 352 are connected to both sides of the top of the movable block 351.
[0029] The top of the movable block 351 is provided with a constraint frame 353, and the vertical plate end of the constraint frame 353 abuts against and fits against the inner wall of the side block 352. The bottom end of the constraint frame 353 is fixed to the surface of the movable block 351 by bolts.
[0030] The inner wall of the constraint frame 353 is provided with an airbag pad 354, and the various parts of the airbag pad 354 are interconnected. After inflation, the airbag pad 354 can wrap around the middle of the workpiece. As a flexible medium, the inflated airbag pad 354 forms an effective buffer isolation layer between the workpiece and the rigid constraint frame 353. It can absorb the impact energy generated by the workpiece due to handling, equipment vibration or accidental collision, and avoid direct contact and friction between the precision surface of the workpiece and the hard metal frame, thereby preventing quality damage such as scratches and indentations. The inflated airbag pad 354 can adaptively expand according to the slight differences in the shape of the workpiece, so that its inner wall tightly and evenly fits the outer circumference of the workpiece. This wrapping effect provides a distributed radial constraint force, which can effectively limit the horizontal movement and rolling of the workpiece, significantly improving the placement stability of the workpiece on the buffer frame. It is especially suitable for preventing slender rods from deflecting or swaying in the middle part between support points.
[0031] When the workpiece is placed into the V-groove of the support plate 23, the instantaneous impact force is transmitted through the support plate 23 to the bottom insert shaft 25, which in turn compresses the buffer spring 26 located at its bottom end. During the compression process, the buffer spring 26 converts the kinetic energy of the workpiece into its own elastic potential energy and dissipates it partially, thereby significantly attenuating the impact load transmitted to the rigid structure of the entire buffer frame. This effectively avoids hard-on-hard contact between the workpiece and the rigid support structure, reducing the risk of indentation, micro-deformation, or damage to the precision structure of the workpiece surface caused by instantaneous impact. The limiting block 24 and the guide groove inside the side plate A22, which are precisely matched, together form a set of high-precision linear motion guide pairs. Its core function is to strictly constrain the degree of freedom of movement of the support plate 23, so that it can only move up and down in the vertical direction perpendicular to the bottom support plate 11.
[0032] The V-shaped opening of the support plate 23 faces upwards, and its two inclined surfaces form a natural guiding and positioning area. When a cylindrical or near-cylindrical rod-shaped workpiece is placed in, it will automatically roll down under gravity and stay stably at the bottom of the V-shaped groove. This structure achieves automatic alignment of the workpiece, ensuring that the workpiece axis remains roughly horizontal and consistent in position without the need for fine adjustment, which is convenient for batch storage and subsequent mechanical gripping. The contact between the V-shaped surface and the workpiece is a two-line contact, which provides sufficient support while significantly reducing the contact area and frictional resistance compared to planar support, making the placement and removal of workpieces smoother. The bottom of the V-groove is designed as a flat surface, i.e., a "flat-bottomed V-shape". This allows the support plate 23 to not only perfectly support a standard cylinder, but also to stably fit the flat part of the workpiece when it has a flat square, milled plane, or non-circular cross-section, preventing the workpiece from rotating freely in the groove. For workpieces with completely non-circular cross-sections or short shafts, this flat surface can be used directly as the main support surface. In addition, compared with the pointed-bottomed V-shape, the flat-bottomed structure increases the stability of the workpiece in a static state. Slight external vibrations are less likely to cause the workpiece to continuously roll slightly in the groove, thereby reducing the risk of surface damage caused by mutual collisions.
[0033] Through its hinged design, the entire adjustment assembly 3 can be rotated as a single unit within the concave surface of the base plate 11. When upright, the auxiliary support 35 provides intermediate support for rod-shaped workpieces. When folded flat, it frees up bottom space or forms a temporary flat surface for storing other types of workpieces or serving as an operating table, achieving multi-functional conversion. The side support 33 provides a sturdy, vertical mounting base for multiple guide shafts 34, ensuring that all guide shafts 34 are parallel to each other and on the same working plane, creating conditions for the smooth sliding and precise adjustment of the multiple auxiliary support 35. This forms a stable and reliable auxiliary support platform that can adapt to different workpiece lengths and the number of support points. The design of two guide shafts 34 as a group enhances the stability and anti-overturning ability of the auxiliary support part 35 when sliding. On this stable basis, each auxiliary support part 35 can slide independently along the guide shaft 34, and the two auxiliary support parts 35 connected by the threaded shaft 36 can achieve linkage and precision adjustment. This allows the support points to be freely arranged within the entire length of the guide shaft 34, and also to precisely control the specific span between the two points, so as to flexibly cope with the complex buffering requirements of single long workpieces, multiple short workpieces, or mixed placement of long and short workpieces.
[0034] Rotating a single knob 37 drives the threaded shaft 36 to rotate, converting the rotational motion into relative linear movement between two movable blocks 351 via threaded transmission. This design allows the operator to precisely and continuously adjust the support span between the two constraint frames 353, perfectly accommodating rod-shaped workpieces of different lengths. Whether a long workpiece requires support at both ends or a short workpiece needs to be placed side by side, this adjustment allows for quick matching, greatly improving the versatility of the buffer rack for workpiece dimensions. The sliding engagement between the movable block 351 and the guide shaft 34 ensures smooth and highly linear movement, providing a stable motion foundation for the constraint frame 353. This structure supports two adjustment modes: one is precise relative distance adjustment via the threaded shaft 36; the other is that the two movable blocks 351 can slide synchronously along the guide shaft 34 to adjust the longitudinal position of the entire auxiliary support on the buffer frame. The threaded drive has reliable self-locking characteristics. Once adjusted to the correct position via the knob 37, the threaded engagement effectively resists loosening caused by vibration or workpiece load without external force, ensuring that the distance between the two movable blocks 351 remains fixed. Combined with the tight sliding engagement between the movable block 351 and the guide shaft 34, they together form a rigid and stable support unit capable of reliably bearing the weight of the workpiece.
[0035] The constraint frame 353 achieves self-centering and anti-displacement during installation by fitting its vertical end against the inner wall of the side guard 352, ensuring accurate relative positioning with the movable block 351. The bolted connection provides reliable rigid fixation, preventing displacement or loosening of the constraint frame 353 under workpiece pressure or external vibration, thus guaranteeing continuous and stable constraint on the workpiece. This connection method, combined with the sliding adjustment function of the movable block 351 on the guide shaft 34, allows the position of the constraint frame 353 to be flexibly adjusted according to the workpiece length. Simultaneously, this structure provides a stable installation foundation for integrating flexible support components such as the airbag cushion 354 within the constraint frame 353.
[0036] Working principle: According to the appendix Figure 1 With appendix Figure 8 As shown, when a rod-shaped workpiece or spline workpiece needs to be placed, the rod-shaped workpiece is placed on the surface of the limiting component 2. When the rod-shaped workpiece is placed, it applies pressure to the support plate frame 23. The support plate frame 23 can drive the limiting block 24 to move in the guide groove on the inner wall of the side plate A22. At the same time, the movement of the support plate frame 23 can drive the bottom insertion shaft 25 to move in the buffer hole of the base 21. The movement of the bottom insertion shaft 25 can push the buffer spring 26 and then compress the buffer spring 26. The buffering force of the buffer spring 26 can relieve the impact force generated when the rod-shaped workpiece is placed to a certain extent. The silicone pad 27 can support and separate the rod-shaped workpiece to prevent the rod-shaped workpiece from directly colliding with the support plate frame 23 during rolling or jumping. Secondly, according to the appendix Figure 4 , Figure 6 and Figure 7As shown, when the rod-shaped workpiece is placed horizontally on the surfaces of the two limiting components 2, the airbag 354 in the auxiliary support 35 can wrap and limit the middle section of the rod-shaped workpiece after inflation, preventing the rod-shaped workpiece from jumping or rotating. When the rod-shaped workpiece is short, the knob 37 can be turned, which drives the threaded shaft 36 to rotate, controlling one of the movable blocks 351 to move on the surface of the threaded shaft 36, expanding the distance between the two movable blocks 351. At this time, one end of the short-shaft rod-shaped workpiece is placed on the surface of the support plate frame 23, and the silicone pad 27 is attached to the inner wall of the support plate frame 23 to support one end of the short-shaft rod-shaped workpiece. The other end is placed in the constraint frame 353, driving the airbag 354 to wrap the short-shaft rod-shaped workpiece. Then, two pieces can be placed in a single row. At the same time, the two movable blocks 351 can move on the surface of the guide shaft 34 simultaneously, thereby adapting to the length of the short-shaft rod-shaped workpiece. Two short-shaft rod-shaped workpieces can be placed at the same time, or long and short-shaft rod-shaped workpieces can be arranged in a row. Finally, according to the appendix Figure 2 With appendix Figure 3 As shown, the side plate 32 can be pushed upwards by tilting the lower groove 14. The side plate 32 can drive the placement rack 31 to rotate, and the placement rack 31 can drive the side upright 33 to flip. When the side upright 33 is flipped and placed flat, the auxiliary support 35 can be supported on the ground surface. The surface of the inverted placement rack 31 is covered with a rubber pad, which can be used for emergency placement of workpieces of other shapes. A through groove is formed between the support frame 12 and the bottom support plate 11, which can facilitate short-distance insertion and lifting by forklifts and other transportation equipment, ensuring convenient insertion.
[0037] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.
Claims
1. A buffer rack structure for processing workpieces of automobile parts, characterized by, Including the buffer frame tray (1), the buffer frame tray (1) includes the bottom supporting plate (11), the bottom end of the bottom supporting plate (11) is symmetrically connected with two support frames (12) on both sides, the top of the bottom supporting plate (11) is provided with a side support frame (13) on both sides, and a plurality of limiting assemblies (2) for limiting support are equidistantly mounted on the surface of the side support frame (13), and the surface of the bottom supporting plate (11) is provided with a concave surface, and the concave surface is movably provided with an adjusting assembly (3) for auxiliary support; The limiting assembly (2) includes a base (21) fixed on the top surface of the side support frame (13), and the base (21) is connected with a side plate A (22) on both sides of the top, and a support plate frame (23) is arranged on the inner end surface of the side plate A (22), and the support plate frame (23) is attached with a silica gel pad (27).
2. The buffering rack structure for processing workpieces of automobile parts according to claim 1, characterized in that, The left side of the concave surface of the bottom supporting plate (11) is provided with an inclined lower groove (14), and two strip-shaped grooves are formed at the edge of the concave surface of the bottom supporting plate (11).
3. The buffering rack structure for processing workpieces of automobile parts according to claim 1, characterized in that, The bottom end of the support plate frame (23) is connected with a bottom insertion shaft (25), and the bottom insertion shaft (25) is inserted into the inside of the base (21) through the buffer hole, and the bottom end surface of the bottom insertion shaft (25) and the inner end surface of the buffer hole of the base (21) are connected and fixed by the buffer spring (26).
4. The buffering rack structure for processing workpieces of automobile parts according to claim 3, characterized in that, The support plate frame (23) is symmetrically provided with two limiting blocks (24) on both sides, and the limiting blocks (24) are movably installed in the inside of the side plate A (22) through the guide groove.
5. The buffering rack structure for processing workpieces of automobile parts according to claim 4, characterized in that, The support plate frame (23) is symmetrically provided with two limiting blocks (24) on both sides, and the limiting blocks (24) are movably installed in the inside of the side plate A (22) through the guide groove.
6. The buffering rack structure for processing workpieces of automobile parts according to claim 1, characterized in that, The support plate frame (23) is symmetrically provided with two limiting blocks (24) on both sides, and the limiting blocks (24) are movably installed in the inside of the side plate A (22) through the guide groove.
7. The buffering rack structure for processing workpieces of automobile parts according to claim 6, characterized in that, The adjusting assembly (3) includes two placing frame plates (31) movably installed at the concave surface of the bottom supporting plate (11), the left side of the two placing frame plates (31) is connected with a side plate (32), the top of the two placing frame plates (31) is connected with a side stand (33), the inner end surface of the side stand (33) is provided with a plurality of guide shafts (34), the two guide shafts (34) are a group, the surface of the guide shaft (34) is provided with two auxiliary support parts (35) which can be movably adjusted.
8. The buffering rack structure for processing workpieces of automobile parts according to claim 7, characterized in that, The auxiliary support part (35) includes a movable block (351) sleeved on the surface of the guide shaft (34), the movable block (351) is sleeved on the surface of the guide shaft (34) through the through hole, one end of the screw shaft (36) is rotatably connected with the inner end surface of the movable block (351), and the other end of the screw shaft (36) penetrates the inside of the movable block (351) through the threaded hole, the screw shaft (36) is connected with a knob (37), and the movable block (351) is connected with a side stop (352) on both sides of the top. The movable block (351) is provided with a constraint frame (353) on the top, and the vertical plate end of the constraint frame (353) abuts and fits in the inner wall of the side stop (352), and the bottom end of the constraint frame (353) is fixed on the surface of the movable block (351) by bolts.
9. The buffering rack structure for processing workpieces of automobile parts according to claim 8, characterized in that, The inner wall of the constraint frame (353) is provided with air bag cushions (354), and each part of the air bag cushions (354) is communicated with each other, and the air bag cushions (354) can wrap the middle part of the workpiece after being inflated.