Heavy shock absorber and bar feeder

Abstract

The utility model relates to the technical field of bar machining equipment, and provides a heavy shock absorber which comprises a driving part, an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are oppositely arranged, and the upper clamping block is movably arranged in the direction close to or away from the lower clamping block; the driving piece is connected with the upper clamping block and used for controlling the upper clamping block to move linearly. A first limiting groove is formed in the side, facing the lower clamping block, of the upper clamping block, a second limiting groove is formed in the side, facing the upper clamping block, of the lower clamping block, the first limiting groove and the second limiting groove are used for limiting a bar, and the upper clamping block and the lower clamping block are used for clamping the bar. The bar clamping device has the effect of increasing the bar clamping force. In addition, the utility model further provides a bar feeding machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bar processing equipment, in particular to a heavy shock absorber and a bar feeder. BACKGROUND

[0002] In the current bar processing industry, equipment such as lathes is often used to perform processing tasks such as cutting, turning, and polishing. In order to effectively feed the bar into the lathe, it is necessary to rely on the bar feeder to realize the automatic conveying process. However, due to the certain spatial distance between the bar feeder and the lathe, when the lathe is in a working state, part of the bar will be suspended between the lathe and the feeder. The bar in this suspended state is prone to vibration during processing.

[0003] Currently, a kind of shock absorber of bar feeder is disclosed in Chinese patent with announcement number CN218746445U, which includes air claw air cylinder and top rod, air claw air cylinder includes cylinder body and two pieces of clamping block slidingly connected at one end of cylinder body, cylinder body controls two pieces of clamping block to slide towards each other or away from each other, top rod is adjustably arranged on the two pieces of clamping block along the sliding direction of clamping block, and the two top rods are on the same straight line;Clamping block is provided with elastic part, and bar is clamped between two pieces of elastic part, when two pieces of elastic part clamp the opposite sides of bar, the ends of two top rods close to each other abut against each other.

[0004] For the related technology in the above, the weight of the processing object (bar) of the bar feeder is getting heavier, and the vibration phenomenon is more obvious during conveying. The traditional air clamp damping method does not meet the needs, and the clamping force of air clamp is relatively limited, so it is necessary to open a shock absorber with better clamping damping performance. CONTENT OF THE INVENTION

[0005] In order to increase the clamping force of the bar and improve the damping and stability effect of bar conveying, the present application provides a heavy shock absorber.

[0006] In the first aspect, the heavy shock absorber provided by the present application adopts the following technical scheme:

[0007] A heavy shock absorber, comprising a driving member, an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are oppositely arranged, and the upper clamping block is movably arranged along the direction close to or away from the lower clamping block;The driving member is connected with the upper clamping block and is used to control the linear movement of the upper clamping block;A first limiting groove is formed on one side of the upper clamping block facing the lower clamping block, a second limiting groove is formed on one side of the lower clamping block facing the upper clamping block, the first limiting groove and the second limiting groove are used to limit the bar, and the upper clamping block and the lower clamping block are used to clamp the bar.

[0008] By adopting the technical scheme, in the production process, the bar is between the upper clamp block and the lower clamp block, the running driving member drives the upper clamp block to move in the direction of approaching the lower clamp block, so that the bar is clamped on the lower clamp block, the sizes of the first limiting groove and the second limiting groove are matched with the diameter of the clamped bar, the bar can be clamped more firmly, and the damping and stability effects of bar conveying are improved.

[0009] Preferably, the first connecting block, the second connecting block and the linkage assembly are further included, the upper clamp block is detachably connected to the first connecting block, and the driving member is connected to the first connecting block; the lower clamp block is detachably connected to the second connecting block, and the first connecting block and the second connecting block are connected through the linkage assembly; when the driving member controls the first connecting block to move downward, the linkage assembly drives the second connecting block to move upward.

[0010] By adopting the technical scheme, when the driving member controls the first connecting block to move vertically downward, the upper clamp block moves downward synchronously; meanwhile, under the action of the linkage assembly, the downward movement of the first connecting block is converted into the upward movement of the second connecting block, so that the lower clamp block moves upward synchronously with the second connecting block, that is, the upper clamp block and the lower clamp block approach each other, so as to clamp the bar. When the driving member controls the first connecting block to move vertically upward, the second connecting block moves downward, at this time, the upper clamp block and the lower clamp block move away from each other, so as to release the bar.

[0011] Preferably, the linkage assembly includes a connecting shaft, a connecting plate, a first clamping column and a second clamping column, the connecting plate is arranged on the connecting shaft and rotates around the connecting shaft, and first and second through holes are arranged in the connecting plate; one end of the first clamping column is arranged on the first connecting block, and the other end passes through the first through hole; one end of the second clamping column is arranged on the second connecting block, and the other end passes through the second through hole.

[0012] By adopting the technical scheme, in the process of moving downward of the first connecting block, the first clamping column moves downward synchronously, the movement of the first clamping column acts on the connecting plate, so that the connecting plate rotates around the connecting shaft. The rotation of the connecting plate acts on the second clamping column in turn, and then indirectly drives the second connecting block to move upward.

[0013] Preferably, a first T-shaped groove is arranged in the first connecting block, and the upper clamp block is clamped in the first T-shaped groove; a second T-shaped groove is arranged in the second connecting block, and the lower clamp block is clamped in the second T-shaped groove.

[0014] By adopting the technical scheme, the upper clamp block is clamped in the first T-shaped groove, so as to realize the detachability of the upper clamp block; the lower clamp block is clamped in the second T-shaped groove, so as to realize the detachability of the lower clamp block, which facilitates the disassembly and replacement of the upper clamp block and the lower clamp block.

[0015] Preferably, the upper clamp block is provided with a third limiting groove on the side away from the lower clamp block, the size of the third limiting groove is different from the size of the first limiting groove, the lower clamp block is provided with a fourth limiting groove on the side away from the upper clamp block, and the third limiting groove and the fourth limiting groove are used for limiting the bar.

[0016] By adopting the above technical scheme, since the upper clamp block and the lower clamp block can be disassembled, in the production process, the upper clamp block can be taken out from the first T-shaped groove and clamped in the second T-shaped groove, and the lower clamp block can be taken out from the second T-shaped groove and clamped in the first T-shaped groove, that is, the positions of the upper clamp block and the lower clamp block are exchanged, so that the third limiting groove and the fourth limiting groove are opposite to each other. Since the size of the third limiting groove is different from the size of the first limiting groove, different sizes of the bar can be clamped, one object can be used in two ways, and the flexibility of production is improved.

[0017] Preferably, the upper clamp block and the lower clamp block are both provided with a clamping groove, the two clamping grooves are located on the same side, and are used for clamping a screwdriver.

[0018] By adopting the above technical scheme, when the upper clamp block and the lower clamp block need to be taken out, the worker can clamp the screwdriver into the clamping groove and then apply a pulling force to pull out the upper clamp block and the lower clamp block.

[0019] Preferably, the device further comprises a fixed plate and a baffle, the fixed plate is fixedly arranged above the upper clamp block, the driving member is arranged on the fixed plate, and the baffle is arranged on the side where the clamping groove is located and is detachably connected to the fixed plate through a fastener.

[0020] By adopting the above technical scheme, the baffle can play a role of isolation and protection.

[0021] Preferably, the driving member is a pneumatic cylinder, an oil cylinder or an electric push rod.

[0022] By adopting the above technical scheme, the pneumatic cylinder, the oil cylinder or the electric push rod can all be used as an execution device for controlling the linear movement of the upper clamp block.

[0023] Preferably, the oil injection member and the oil removal assembly are further included, when the upper clamp block and the lower clamp block are clamped to each other, a liquid flow channel is formed between the upper clamp block and the lower clamp block, the oil injection member is used to inject lubricating oil into the liquid flow channel, the oil removal assembly is arranged on one side of the clamping opening of the upper clamp block and the lower clamp block, and is used to blow off the lubricating oil on the rod; the oil removal assembly comprises an outer ring, an inner ring and a blowing member, the inner ring is arranged in the outer ring and is hollow, the inner ring is used for the rod to pass through, the inner ring is provided with a ring groove, and a plurality of air holes are formed in the inner ring, the air holes are distributed along the circumference of the inner ring and are communicated with the ring groove, and the blowing member is arranged on the outer ring and is communicated with the ring groove; and the air holes are obliquely arranged.

[0024] By adopting the above technical scheme, when the rod is clamped by the upper clamp block and the lower clamp block, the sliding friction on the outer surface of the rod is large during the conveying of the rod, and the outer surface of the rod is easily damaged. By additionally arranging the oil injection member and the oil removal assembly, the oil injection member can inject lubricating oil into the liquid flow channel, so that the lubricating oil enters the first limiting groove and the second limiting groove and contacts the rod, thereby achieving the lubricating effect. As the rod is conveyed, the rod is conveyed out of the inner ring, at this time, the blowing member starts to work, the blowing member blows gas into the ring groove, so that the gas is blown out of the air holes. Since there is a gap between the rod and the inner wall of the inner ring, the airflow can blow off the oil droplets on the outer surface of the rod, so as to recycle the lubricating oil.

[0025] In the second aspect, the application further provides a rod feeder comprising the heavy shock absorber with all the above structures.

[0026] In summary, the application has at least one of the following beneficial technical effects:

[0027] (1) By arranging the upper clamp block and the lower clamp block, the rod is placed between the upper clamp block and the lower clamp block during production. By operating the driving member, the upper clamp block is controlled to move towards the lower clamp block to clamp the rod. The sizes of the first limiting groove and the second limiting groove match the diameter of the clamped rod, ensuring that the rod is firmly clamped. Such a design helps to improve the shock absorption and stability during the conveying of the rod.

[0028] (2) By arranging the linkage assembly, when the driving member causes the first connecting block to move vertically downward, the upper clamp block will synchronously descend; at the same time, due to the action of the linkage assembly, the descending action of the first connecting block will be converted into the ascending action of the second connecting block, causing the lower clamp block to synchronously ascend. In this way, the upper clamp block and the lower clamp block approach each other, thereby realizing the clamping of the rod.

[0029] (3) By arranging the first T-shaped groove and the second T-shaped groove, the upper clamp block and the lower clamp block are detachable, facilitating the disassembly and replacement of the upper clamp block and the lower clamp block. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a heavy-duty shock absorber in Embodiment 1 of the present application;

[0031] Figure 2 is a partial structural schematic diagram of a heavy-duty shock absorber in Embodiment 1 of the present application;

[0032] Figure 3 is Figure 2 a structural schematic diagram from another perspective;

[0033] Figure 4 is a structural schematic diagram of a heavy-duty shock absorber in Embodiment 2 of the present application;

[0034] Figure 5 is a sectional schematic diagram of a heavy-duty shock absorber in Embodiment 2 of the present application;

[0035] Figure 6 is a structural schematic diagram of an upper clamp block in Embodiment 3 of the present application;

[0036] Figure 7 is a structural schematic diagram of a bar feeder in the present application.

[0037] Reference signs: 1, driving member; 2, upper clamp block; 3, lower clamp block; 4, first limiting groove; 5, second limiting groove; 6, first connecting block; 7, second connecting block; 8, linkage assembly; 81, connecting shaft; 82, connecting plate; 83, first clamping column; 84, second clamping column; 9, first through hole; 10, second through hole; 11, first T-shaped groove; 12, second T-shaped groove; 13, third limiting groove; 14, fourth limiting groove; 15, clamping groove; 16, fixing plate; 17, baffle; 18, oil injection member; 19, oil removal assembly; 191, outer ring; 192, inner ring; 193, air blowing member; 20, liquid flow channel; 21, ring groove; 22, air hole. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The present application can be embodied in various different forms, and is not limited to the embodiments described here.

[0039] In the description of the present application, the expressions of "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics expressed in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics expressed can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0041] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection; can also be detachable connection; or integrated; or mechanical connection. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art can combine and combine the different embodiments or examples expressed in the present application and the features of the different embodiments or examples without conflict.

[0043] Embodiment 1

[0044] The embodiments of the present application disclose a heavy shock absorber. Referring to Figure 1 and Figure 2 , the heavy shock absorber comprises a driving member 1, an upper clamp block 2 and a lower clamp block 3. The upper clamp block 2 and the lower clamp block 3 are oppositely arranged, the upper clamp block 2 is directly above the lower clamp block 3, and the upper clamp block 2 is movably arranged in the direction of approaching or moving away from the lower clamp block 3. The driving member 1 is connected with the upper clamp block 2 and is used for controlling the linear movement of the upper clamp block 2. The driving member 1 can be but is not limited to a pneumatic cylinder, an oil cylinder or an electric push rod, and in the present embodiment, the driving member 1 is a pneumatic cylinder, and the piston rod of the pneumatic cylinder is connected with the upper clamp block 2.

[0045] The side of the upper clamp block 2 facing the lower clamp block 3 is provided with a first limiting groove 4, the first limiting groove 4 is semicircular in shape, the side of the lower clamp block 3 facing the upper clamp block 2 is provided with a second limiting groove 5, the second limiting groove 5 is also semicircular in shape and has the same diameter as the first limiting groove 4. The first limiting groove 4 and the second limiting groove 5 are used for limiting the bar, and the upper clamp block 2 and the lower clamp block 3 are used for clamping the bar.

[0046] In the production process, the bar is between the upper clamp block 2 and the lower clamp block 3, the driving member 1 is operated, the driving member 1 controls the upper clamp block 2 to move in the direction of approaching the lower clamp block 3, so as to clamp the bar on the lower clamp block 3, the size of the first limiting groove 4 and the second limiting groove 5 is matched with the diameter of the clamped bar, so that the bar can be clamped more firmly, and the shock absorption and stability effect of bar conveying is improved.

[0047] In combinationFigure 3 Specifically, the heavy-duty shock absorber further comprises a first connecting block 6, a second connecting block 7 and a linkage assembly 8. The piston rod of the cylinder is connected with the first connecting block 6, and the upper clamp block 2 is detachably connected with the first connecting block 6. In the embodiment, the first connecting block 6 is in the shape of the Chinese character “7”. The lower clamp block 3 is detachably connected with the second connecting block 7, and the second connecting block 7 is arranged in a lifting manner. The first connecting block 6 and the second connecting block 7 are connected through the linkage assembly 8. When the cylinder controls the first connecting block 6 to move downward, the linkage assembly 8 drives the second connecting block 7 to move upward.

[0048] The linkage assembly 8 comprises a connecting shaft 81, a connecting plate 82, a first clamping column 83 and a second clamping column 84. The connecting shaft 81 is fixedly installed on the external rack, and the connecting plate 82 is rotatably connected with the connecting shaft 81 and takes the connecting shaft 81 as a rotation shaft. First and second through holes 9 and 10 are formed at both ends of the connecting plate 82. One end of the first clamping column 83 is fixedly connected with the first connecting block 6, and the other end penetrates through the first through hole 9. One end of the second clamping column 84 is fixedly connected with the second connecting block 7, and the other end penetrates through the second through hole 10.

[0049] When the driving member 1 controls the first connecting block 6 to move vertically downward, the upper clamp block 2 and the first clamping column 83 move downward synchronously, and the movement of the first clamping column 83 acts on the connecting plate 82, so that the connecting plate 82 rotates around the connecting shaft 81. The rotation of the connecting plate 82 acts on the second clamping column 84 in turn, thereby indirectly driving the second connecting block 7 to move upward, that is, the upper clamp block 2 and the lower clamp block 3 move close to each other, so as to clamp the bar. When the driving member 1 controls the first connecting block 6 to move vertically upward, the linkage assembly 8 controls the second connecting block 7 to move downward, and at this time, the upper clamp block 2 and the lower clamp block 3 move away from each other, so as to release the bar.

[0050] The first connecting block 6 is provided with a first T-shaped groove 11, and the upper clamp block 2 is clamped in the first T-shaped groove 11, so as to realize the detachability of the upper clamp block 2 by clamping force. The second connecting block 7 is provided with a second T-shaped groove 12, and the lower clamp block 3 is clamped in the second T-shaped groove 12, so as to realize the detachability of the lower clamp block 3 by clamping force. As shown in the drawings, the side of the upper clamp block 2 away from the lower clamp block 3 is further provided with a third limiting groove 13, and the size of the third limiting groove 13 is different from that of the first limiting groove 4. In the embodiment, the size of the third limiting groove 13 is smaller than that of the first limiting groove 4. The side of the lower clamp block 3 away from the upper clamp block 2 is provided with a fourth limiting groove 14, and the size of the fourth limiting groove 14 is the same as that of the third limiting groove 13, and both of them are in the shape of a semicircle. The third limiting groove 13 and the fourth limiting groove 14 are also used for limiting the bar.

[0051] Since the upper clamp block 2 and the lower clamp block 3 can be disassembled, during the production process, the upper clamp block 2 can be taken out from the first T-shaped groove 11 and clamped in the second T-shaped groove 12, and at the same time, the lower clamp block 3 can be taken out from the second T-shaped groove 12 and clamped in the first T-shaped groove 11, that is, the positions of the upper clamp block 2 and the lower clamp block 3 are exchanged, so that the third limiting groove 13 and the fourth limiting groove 14 are opposite to each other. Since the size of the third limiting groove 13 is different from the size of the first limiting groove 4, different sizes of the bar can be clamped, one object is used in two ways, and the flexibility of production is improved.

[0052] According to some embodiments of the present application, optionally, please refer to Figure 2 . The upper clamp block 2 and the lower clamp block 3 are both provided with clamping grooves 15, the two clamping grooves 15 are located on the same side, and are used for clamping a screwdriver. When the upper clamp block 2 and the lower clamp block 3 need to be taken out, the worker can clamp the screwdriver into the clamping groove 15, and then apply a pulling force, so as to pull out the upper clamp block 2 and the lower clamp block 3.

[0053] In addition, the upper side of the first connecting block 6 is also fixedly provided with a fixed plate 16, and the air cylinder is installed on the fixed plate 16, and the piston rod of the air cylinder is connected through the fixed plate 16 and the first connecting block 6. The side close to the two clamping grooves 15 is also detachably connected with a baffle 17, the baffle 17 is detachably connected on the fixed plate 16 through a fastener, the fastener is a fastening bolt or a fastening screw, and the baffle 17 is used for shielding the upper clamp block 2 and the lower clamp block 3.

[0054] The implementation principle of the heavy shock absorber according to an embodiment of the present application is as follows: during the production process, the bar is placed between the upper clamp block 2 and the lower clamp block 3. By operating the driving member 1, the upper clamp block 2 is controlled to move towards the lower clamp block 3 to clamp the bar. The sizes of the first limiting groove 4 and the second limiting groove 5 match the diameter of the clamped bar, so as to ensure that the bar is clamped firmly. Such a design helps to improve the shock absorption and stability during the bar conveying process.

[0055] Embodiment 2

[0056] Based on embodiment 1, as shown in Figure 2 , Figure 4 and Figure 5 , the heavy shock absorber according to an embodiment of the present application further comprises an oil injection member 18 and an oil removal assembly 19. When the upper clamp block 2 and the lower clamp block 3 are clamped with each other, a liquid flow channel 20 is formed between the upper clamp block 2 and the lower clamp block 3. The oil injection member 18 is installed on the baffle 17 and is used for injecting lubricating oil into the liquid flow channel 20. The oil removal assembly 19 is arranged on the side of the clamping opening of the upper clamp block 2 and the lower clamp block 3 and is used for blowing off the lubricating oil on the bar.

[0057] Specifically, the degreasing assembly 19 includes an outer ring 191, an inner ring 192, and an air blowing component 193. The inner ring 192 is fixedly installed inside the outer ring 191 and is hollow. The inner diameter of the inner ring 192 is larger than the outer diameter of the rod, and the inner ring 192 is used for the rod to pass through. An annular groove 21 is formed on the outer surface of the inner ring 192, and several air holes 22 are also formed through the inner ring 192. The air holes 22 are distributed at intervals along the circumference of the inner ring 192 and all communicate with the annular groove 21. The air blowing component 193 is installed on the outer ring 191 and communicates with the annular groove 21. The air holes 22 are obliquely arranged inward, and the air outlet end of the air hole 22 faces the clamping opening formed by the upper clamping block 2 and the lower clamping block 3.

[0058] After the bar is clamped by the upper clamping block 2 and the lower clamping block 3, the sliding friction force on the outer surface of the bar is relatively large as the bar is conveyed, which can easily damage the outer surface of the bar. By adding an oil spraying component 18 and an oil removal component 19, the oil spraying component 18 can inject lubricating oil into the liquid flow channel, so that the lubricating oil enters the first limiting groove 4 and the second limiting groove 5 and comes into contact with the bar to achieve a lubrication effect. As the bar is conveyed, the bar will be conveyed out from the inner ring 192. At this time, the air blowing component 193 starts to work, and the air blowing component 193 blows gas into the ring groove 21, so that the gas is blown out from each air hole 22. Since there is a gap between the bar and the inner wall of the inner ring 192, the airflow can blow off the oil droplets on the outer surface of the bar so as to recover the lubricating oil.

[0059] Example 3

[0060] Based on Example 1, such as Figure 6 As shown, the heavy-duty shock absorber of this embodiment differs in the structure of the upper clamping block 2 and the lower clamping block 3. The upper clamping block 2 and the lower clamping block 3 are cubes. The upper clamping block 2 can be engaged in the first T-slot 11 in four directions, and the lower clamping block 3 can be engaged in the second T-slot 12 in four directions. Two first limiting grooves 4 are provided on the side of the upper clamping block 2 facing the lower clamping block 3. The two first limiting grooves 4 are perpendicular to each other and have different diameters. Two first limiting grooves 4 are also provided on the side of the upper clamping block 2 away from the lower clamping block 3. The two first limiting grooves 4 are perpendicular to each other and have different diameters. Similarly, two second limiting grooves 5 are provided on the side of the lower clamping block 3 facing the upper clamping block 2. The two second limiting grooves 5 are perpendicular to each other and have different diameters. Two second limiting grooves 5 are also provided on the side of the lower clamping block 3 away from the upper clamping block 2. The two second limiting grooves 5 are perpendicular to each other and have different diameters. During production, the position of the upper clamping block 2 inserted into the first T-slot 11 can be changed, and the position of the lower clamping block 3 inserted into the second T-slot 12 can be changed accordingly. This allows for clamping of bars of different sizes, achieving multiple uses with a single component and improving production flexibility. In some embodiments, the upper clamping block 2 and the lower clamping block 3 can also be regular hexahedrons or regular octahedrons.

[0061] Based on the above embodiments, such as Figure 7As shown, the embodiment of the present application further provides a bar feeder, which comprises all the structures of the heavy shock absorber. Since the heavy shock absorber has been described above, no further description is given here.

[0062] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A heavy-duty shock absorber, characterized in that, The device includes a drive unit (1), an upper clamping block (2), and a lower clamping block (3). The upper clamping block (2) and the lower clamping block (3) are arranged opposite to each other. The upper clamping block (2) is movable in a direction that is close to or away from the lower clamping block (3). The drive unit (1) is connected to the upper clamping block (2) and is used to control the linear movement of the upper clamping block (2). The upper clamping block (2) has a first limiting groove (4) on the side facing the lower clamping block (3), and the lower clamping block (3) has a second limiting groove (5) on the side facing the upper clamping block (2). The first limiting groove (4) and the second limiting groove (5) are used to limit the bar material. The upper clamping block (2) and the lower clamping block (3) are used to clamp the bar material.

2. The heavy-duty shock absorber according to claim 1, characterized in that, It also includes a first connecting block (6), a second connecting block (7) and a linkage component (8). The upper clamping block (2) is detachably connected to the first connecting block (6), and the driving component (1) is connected to the first connecting block (6). The lower clamping block (3) is detachably connected to the second connecting block (7). The first connecting block (6) and the second connecting block (7) are connected by the linkage component (8). When the driving component (1) controls the first connecting block (6) to move down, the linkage component (8) drives the second connecting block (7) to move up.

3. A heavy-duty shock absorber according to claim 2, characterized in that, The linkage component (8) includes a connecting shaft (81), a connecting plate (82), a first locking pin (83), and a second locking pin (84). The connecting plate (82) is disposed on the connecting shaft (81) and uses the connecting shaft (81) as a pivot. The connecting plate (82) has a first through hole (9) and a second through hole (10). One end of the first locking pin (83) is disposed on the first connecting block (6), and the other end passes through the first through hole (9). One end of the second locking pin (84) is disposed on the second connecting block (7), and the other end passes through the second through hole (10).

4. A heavy-duty shock absorber according to claim 2, characterized in that, The first connecting block (6) has a first T-slot (11) and the upper clamping block (2) is engaged in the first T-slot (11); the second connecting block (7) has a second T-slot (12) and the lower clamping block (3) is engaged in the second T-slot (12).

5. A heavy-duty shock absorber according to claim 4, characterized in that, The upper clamping block (2) has a third limiting groove (13) on the side away from the lower clamping block (3). The size of the third limiting groove (13) is different from that of the first limiting groove (4). The lower clamping block (3) has a fourth limiting groove (14) on the side away from the upper clamping block (2). The third limiting groove (13) and the fourth limiting groove (14) are used to limit the bar.

6. A heavy-duty shock absorber according to claim 4, characterized in that, Both the upper clamping block (2) and the lower clamping block (3) are provided with slots (15), and the two slots (15) are located on the same side and are used for screwdrivers to be inserted.

7. A heavy-duty shock absorber according to claim 6, characterized in that, It also includes a fixing plate (16) and a baffle (17). The fixing plate (16) is fixedly installed and located above the upper clamping block (2). The driving member (1) is installed on the fixing plate (16). The baffle (17) is installed on the side where the slot (15) is located and is detachably connected to the fixing plate (16) by fasteners.

8. A heavy-duty shock absorber according to claim 1, characterized in that, The upper clamping block (2) and the lower clamping block (3) are cubes or regular hexahedrons. The upper clamping block (2) has a plurality of first limiting grooves (4), each of which has a different diameter. The lower clamping block (3) has a plurality of second limiting grooves (5), each of which has a different diameter.

9. A heavy-duty shock absorber according to claim 1, characterized in that, It also includes an oil spraying component (18) and an oil removal component (19). When the upper clamping block (2) and the lower clamping block (3) are clamped together, a liquid flow channel (20) is formed between the upper clamping block (2) and the lower clamping block (3). The oil spraying component (18) is used to inject lubricating oil into the liquid flow channel (20). The oil removal component (19) is located on one side of the clamping jaws of the upper clamping block (2) and the lower clamping block (3) and is used to blow off the lubricating oil on the bar. The oil removal component (19) includes an outer ring (191), an inner ring (192), and an air blowing component (193). 193), the inner ring (192) is disposed inside the outer ring (191) and is hollow. The inner ring (192) is used for the rod to pass through. The inner ring (192) has an annular groove (21) and a plurality of air holes (22) are also provided. Each air hole (22) is distributed at intervals along the circumference of the inner ring (192) and is connected to the annular groove (21). The air blowing element (193) is disposed on the outer ring (191) and is connected to the annular groove (21). The air holes (22) are obliquely arranged.

10. A bar feeder, characterized in that, Includes the heavy-duty shock absorber as described in any one of claims 1 to 9.

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