Concave pressing equipment for side wall of metal barrel-shaped container

By designing a concave pressing device including a load block, a rotating barrel, a tooth ring and an electric cylinder, the problems of poor limiting effect and inconvenient position adjustment in the prior art are solved, and efficient concave pressing and convection of metal barrel containers are achieved. Quick position adjustment.

CN222242173UActive Publication Date: 2024-12-27SHENYANG HAOXING MASCH MFG CO LTD
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Patent Information

Application Number
CN202422307280.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2024-12-27
Estimated Expiration
2034-09-23

AI Technical Summary

Technical Problem

The existing concave equipment is difficult to improve the limiting effect of the metal barrel container, and it is not convenient to quickly adjust the position of the barrel body relative to the indentation head.

Method used

A concave device including a bearing block, a rotating barrel, a tooth ring, an electric cylinder and an adjusting block is designed. Through the coordination of the electric cylinder and the gear, the inner and outer walls of the metal barrel are compressed, and through the adjustment block and an electric cylinder are The synergistic effect of the drum is convenient to adjust the position of the barrel relative to the indenter.

Benefits of technology

It improves the limiting effect of metal barrel containers, simplifies the rapid adjustment of the position of the barrel body, and improves the concave efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of indenting equipment, in particular to indenting equipment for the side wall of a metal barrel-shaped container, which comprises a bearing block. A fixing disc is fixedly connected to the upper end of the bearing block, a rotating cylinder is rotationally installed on the inner wall of the fixing disc, a gear ring is fixedly connected to the side wall of the rotating cylinder, a bearing cylinder is fixedly connected to the upper end of the rotating cylinder, the bottom of the bearing cylinder is of a closed structure, first groove bodies are evenly distributed in the inner wall of the bearing cylinder, and first extrusion blocks are movably arranged on the inner walls of the first groove bodies. And first electric cylinders which are uniformly distributed are fixedly connected to the outer side wall of the bearing cylinder. A motor is started to drive a gear to rotate, the gear is meshed with a gear ring, a rotating barrel is driven to rotate, the rotating barrel drives a bearing barrel to rotate, and therefore a metal barrel body which is extruded and fixed is driven to rotate, and a fourth electric cylinder is started to enable an inner pressing block to move towards the inner wall of the metal barrel body; and the upper part of the inner wall of the metal barrel body can be indented until the inner wall of the metal barrel body is extruded and deformed.
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Description

Technical Field

[0001] The utility model belongs to the field of denting equipment, and in particular relates to a denting equipment for the side wall of a metal barrel-shaped container. Background Art

[0002] Metal barrel containers are widely used to store and transport various liquid or solid substances. They are usually made of metal materials such as steel, aluminum or stainless steel. Metal barrels usually have high durability and strength and can withstand greater pressure and impact.

[0003] At present, when processing metal barrel containers, it is sometimes necessary to perform local denting treatment on the side walls of the metal barrel containers to achieve specific process requirements or aesthetic effects. In the prior art, the metal barrel container is usually fixed and then the side walls of the metal barrel container are dented using a high-strength alloy pressing head. However, the denting equipment in the prior art is usually difficult to improve the limiting effect of the metal barrel container, and it is not convenient to quickly adjust the position of the barrel relative to the pressing head, which needs further improvement.

[0004] Therefore, a denting device for the side wall of a metal barrel-shaped container is proposed, which can improve the limiting effect of the metal barrel-shaped container and facilitate rapid adjustment of the position of the barrel body relative to the pressure head. Utility Model Content

[0005] In order to overcome the problems that the denting equipment in the prior art is usually difficult to improve the limiting effect on the metal barrel container and it is not convenient to quickly adjust the position of the barrel body relative to the pressure head, a denting equipment for the side wall of the metal barrel container is proposed.

[0006] The technical scheme of the utility model is as follows: a denting device for the side wall of a metal barrel-shaped container comprises a bearing block; a fixed plate is fixedly connected to the upper end of the bearing block, a rotating cylinder is rotatably installed on the inner wall of the fixed plate, a gear ring is fixedly connected to the side wall of the rotating cylinder, a bearing cylinder is fixedly connected to the upper end of the rotating cylinder, the bottom of the bearing cylinder is a closed structure, a uniformly distributed first groove body is opened on the inner wall of the bearing cylinder, a first extrusion block is movably arranged on the inner wall of the first groove body, a uniformly distributed first electric cylinder is fixedly connected to the outer wall of the bearing cylinder, an output shaft of the first electric cylinder passes through the wall layer of the bearing cylinder and is fixedly connected to an end of the first extrusion block away from the center of the bearing cylinder, a uniformly distributed second groove body is opened on the upper end of the bearing block, a second electric cylinder is fixedly connected to the bottom surface of the inner wall of the second groove body, a lifting block is fixedly connected to the upper end of the output shaft of the second electric cylinder, a third groove body is opened on the upper end of the bearing block, a motor is fixedly connected to the bottom surface of the inner wall of the third groove body, the output shaft of the motor passes through the fixed plate and is fixedly connected to the lifting block. There are gears, and the gears and gear rings are meshed with each other. Four first adjusting blocks are hinged on the side walls of the fixed plate, and the upper end of the first adjusting block is fixedly connected to a first hinge seat, and the second adjusting block is hinged on the first hinge seat. A movable cylinder is movably arranged above the bearing block, and four evenly distributed second hinge seats are fixedly connected to the outer side wall of the movable cylinder. The other end of the second adjusting block is hinged to the second hinge seat, and an evenly distributed third electric cylinder is fixedly connected to the outer side wall of the movable cylinder. The output shaft of the third electric cylinder passes through the wall layer of the movable cylinder and is fixedly connected to the second extrusion block. A fourth groove body is opened at the upper end of the bearing block, and an insert block is movably arranged on the inner wall of the fourth groove body, and one end of the insert block is fixedly connected to a fixed block, and both sides of the fixed block are fixedly connected to the fourth electric cylinder and the fifth electric cylinder, and the fifth electric cylinder is located above the fourth electric cylinder, and an inner pressure block is fixedly connected to the output shaft of the fourth electric cylinder, and a connecting block is fixedly connected to the output shaft of the fifth electric cylinder, and an outer pressure block is fixedly connected to the end of the connecting block close to the fixed block.

[0007] Preferably, when in use, the metal barrel body to be dented is first placed on the inner wall of the carrying cylinder, and then the first electric cylinder is turned on to make the first extrusion block move toward the center of the carrying cylinder, so that the outer wall of the metal barrel body can be extruded and fixed, and then the motor is turned on to drive the gear to rotate, and the gear and the gear ring are meshed with each other, which will drive the rotating cylinder to rotate, and the rotating cylinder will drive the carrying cylinder to rotate, thereby driving the metal barrel body that has been squeezed and fixed to rotate. At this time, the upper part of the outer wall of the metal barrel body will move along the inner walls of the four second extrusion blocks, and then the inner and outer walls of the metal barrel body are dented, first the insertion block is placed on the inner wall of the fourth slot body, and then the fifth electric cylinder is turned on to make the connecting block move in the direction of the fixed block, so that the outer pressure block contacts the upper part of the outer wall of the metal barrel body, and the upper part of the outer wall of the metal barrel body can be dented, and the fourth electric cylinder is turned on The cylinder makes the inner pressure block move toward the inner wall of the metal barrel body until the inner wall of the metal barrel body is squeezed and deformed, thereby realizing denting the upper part of the inner wall of the metal barrel body. When it is necessary to adjust the position of the barrel body relative to the pressure head, the extrusion of the outer wall of the metal barrel body by the first extrusion block is released, and the third electric cylinder is turned on to make the second extrusion block squeeze the side wall of the metal barrel body. Then, the second electric cylinder is turned on to move the lifting block upward, which will make the first adjustment block rotate upward, and the second adjustment block will drive the movable cylinder to move upward, thereby realizing the upward movement of the metal barrel body. Then, the inner pressure block and the outer pressure block can be used again to dent the parts of the metal barrel body at different depths, which solves the problem that the denting equipment in the prior art is usually difficult to improve the limiting effect of the metal barrel container and is not convenient to quickly adjust the position of the barrel body relative to the pressure head.

[0008] Preferably, the lower end surface of the first adjustment block fits with the upper end surface of the supporting block, the first adjustment block is located directly above the second slot body, and the first adjustment block can be supported by the upper end of the supporting block, which is conducive to the stable placement of the first adjustment block.

[0009] Preferably, the third electric cylinder and the second hinge seat are staggered, the height of the second extrusion block is greater than the height of the movable cylinder, and the second extrusion block is arc-shaped. The staggered distribution of the third electric cylinder and the second hinge seat and the setting that the second extrusion block is higher than the movable cylinder can increase the clamping effect of the barrel body and improve the stability of the barrel body clamping.

[0010] Preferably, a bolt is threadedly installed on the side wall of the supporting block, a screw hole is penetrated through the plug block, the bolt passes through the wall layer of the supporting block and is threadedly installed on the inner wall of the screw hole, the plug block is inserted into the inner wall of the fourth slot body, and then the bolt passes through the wall layer of the supporting block and is threadedly installed on the inner wall of the screw hole, so that the plug block can be stably installed and fixed on the supporting block.

[0011] Preferably, the outer pressure block is located above the inner pressure block, and the two outer pressure blocks are symmetrical with respect to the fixed block. The arrangement of the two outer pressure blocks facilitates rapid concave pressing of the upper portion of the outer side wall of the metal barrel.

[0012] Preferably, the inner pressure block is in a semi-cylindrical structure, and the two inner pressure blocks are symmetrical with respect to the fixed block. The arrangement of the two inner pressure blocks facilitates rapid denting of the upper portion of the inner side wall of the metal barrel body.

[0013] Preferably, the central axis of the supporting cylinder and the central axis of the movable cylinder are collinear, and the central axis of the second extrusion block and the central axis of the movable cylinder are collinear. The setting of the second extrusion block can limit the outer wall of the metal barrel body, which is beneficial to the stable rotation of the metal barrel body.

[0014] Beneficial effects of the utility model:

[0015] 1. By placing the metal barrel body to be dented on the inner wall of the carrying cylinder, and then starting the first electric cylinder to move the first extrusion block toward the center of the carrying cylinder, the outer wall of the metal barrel body can be extruded and fixed, and then the motor is turned on to drive the gear to rotate, and the gear and the gear ring are meshed with each other, which will drive the rotating cylinder to rotate, and the rotating cylinder will drive the carrying cylinder to rotate, thereby driving the metal barrel body that has been squeezed and fixed to rotate. At this time, the upper part of the outer wall of the metal barrel body will move along the inner walls of the four second extrusion blocks, and then the inner and outer walls of the metal barrel body are dented. First, the insert block is placed on the inner wall of the fourth slot body, and then the fifth electric cylinder is turned on to move the connecting block in the direction of the fixed block, so that the outer pressure block contacts the upper part of the outer wall of the metal barrel body, and the upper part of the outer wall of the metal barrel body can be dented. The fourth electric cylinder is turned on to move the inner pressure block toward the inner wall of the metal barrel body until the inner wall of the metal barrel body is squeezed and deformed, so as to realize the denting of the upper part of the inner wall of the metal barrel body, which solves the problem that the denting equipment in the prior art is usually difficult to improve the limiting effect of the metal barrel container;

[0016] 2. When the position of the barrel body relative to the pressure head needs to be adjusted, the first extrusion block is released from the outer wall of the metal barrel body, and the third electric cylinder is turned on to make the second extrusion block squeeze the side wall of the metal barrel body, and then the second electric cylinder is turned on to move the lifting block upward, which will cause the first adjustment block to rotate upward, and the second adjustment block will drive the movable cylinder to move upward, thereby realizing the upward movement of the metal barrel body, and then the inner and outer pressure blocks are used again to dent the parts of the metal barrel body at different depths, which solves the problem that the denting equipment in the prior art is not convenient for quickly adjusting the position of the barrel body relative to the pressure head;

[0017] 3. Insert the plug into the inner wall of the fourth slot body, and then pass the bolt through the wall layer of the bearing block and install it on the inner wall of the screw hole, so that the plug can be stably installed and fixed on the bearing block. The setting of the two outer pressure blocks is convenient for quickly pressing the upper part of the outer wall of the metal barrel body, and the setting of the two inner pressure blocks is convenient for quickly pressing the upper part of the inner wall of the metal barrel body, thereby improving the pressing efficiency of the metal barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a three-dimensional structural schematic diagram of a denting device for the side wall of a metal barrel-shaped container of the utility model;

[0019] Figure 2 The three-dimensional structure schematic diagram of the supporting cylinder of the denting device for the side wall of a metal barrel-shaped container of the utility model is shown;

[0020] Figure 3 The schematic diagram of the cross-sectional three-dimensional structure of a bearing block of a denting device for the side wall of a metal barrel-shaped container of the utility model is shown;

[0021] Figure 4 The present invention shows a schematic diagram of the three-dimensional structure of a movable cylinder of a metal barrel container side wall denting device of the present invention;

[0022] Figure 5 The present invention shows a schematic diagram of the three-dimensional disassembly structure of a bearing block and an insert block of a denting device for the side wall of a metal barrel-shaped container;

[0023] Figure 6 What is shown is a three-dimensional structural schematic diagram of an insert block of a denting device for the side wall of a metal barrel-shaped container of the utility model.

[0024] The marks in the attached drawings are: 1. bearing block; 2. fixed plate; 3. rotating cylinder; 4. gear ring; 5. bearing cylinder; 6. first slot body; 7. first electric cylinder; 8. first extrusion block; 9. second slot body; 10. second electric cylinder; 11. lifting block; 12. third slot body; 13. motor; 14. gear; 15. first adjusting block; 16. first hinge seat; 17. second adjusting block; 18. movable cylinder; 19. second hinge seat; 20. third electric cylinder; 21. second extrusion block; 22. fourth slot body; 23. bolt; 24. insert block; 25. screw hole; 26. fixing block; 27. fourth electric cylinder; 28. inner pressure block; 29. ​​fifth electric cylinder; 30. connecting block; 31. outer pressure block. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-Figure 6The utility model provides an embodiment: a denting device for the side wall of a metal barrel-shaped container, comprising a bearing block 1; a fixed plate 2 is fixedly connected to the upper end of the bearing block 1, a rotating cylinder 3 is rotatably mounted on the inner wall of the fixed plate 2, a gear ring 4 is fixedly connected to the side wall of the rotating cylinder 3, a bearing cylinder 5 is fixedly connected to the upper end of the rotating cylinder 3, the bottom of the bearing cylinder 5 is a closed structure, the inner wall of the bearing cylinder 5 is provided with uniformly distributed first grooves 6, the inner wall of the first groove 6 is movably provided with a first extrusion block 8, and the outer wall of the bearing cylinder 5 is fixedly connected with uniformly distributed first electric cylinders 7 The output shaft of the first electric cylinder 7 passes through the wall layer of the bearing tube 5 and is fixed to the end of the first extrusion block 8 away from the center of the bearing tube 5. The upper end of the bearing block 1 is provided with uniformly distributed second slots 9. The inner wall bottom surface of the second slot 9 is fixedly connected to the second electric cylinder 10. The upper end of the output shaft of the second electric cylinder 10 is fixedly connected to the lifting block 11. The upper end of the bearing block 1 is provided with a third slot 12. The bottom surface of the inner wall of the third slot 12 is fixedly connected to the motor 13. The output shaft of the motor 13 passes through the fixed plate 2 and is fixedly connected to the gear 14. The gear 14 and the gear ring 4 are mutually connected. The side wall of the fixed plate 2 is hinged with four first adjustment blocks 15, the upper end of the first adjustment block 15 is fixedly connected to a first hinge seat 16, and the first hinge seat 16 is hinged with a second adjustment block 17. A movable cylinder 18 is movably arranged above the bearing block 1, and the outer side wall of the movable cylinder 18 is fixedly connected with four evenly distributed second hinge seats 19, and the other end of the second adjustment block 17 is hinged on the second hinge seat 19. The outer side wall of the movable cylinder 18 is fixedly connected with evenly distributed third electric cylinders 20, and the output shaft of the third electric cylinder 20 passes through the wall layer of the movable cylinder 18 and is fixed A second extrusion block 21 is connected, a fourth slot body 22 is opened at the upper end of the supporting block 1, an insert block 24 is movably provided on the inner wall of the fourth slot body 22, one end of the insert block 24 is fixedly connected to a fixed block 26, both sides of the fixed block 26 are fixedly connected to a fourth electric cylinder 27 and a fifth electric cylinder 29, the fifth electric cylinder 29 is located above the fourth electric cylinder 27, an inner pressure block 28 is fixedly connected to the output shaft of the fourth electric cylinder 27, a connecting block 30 is fixedly connected to the output shaft of the fifth electric cylinder 29, and an outer pressure block 31 is fixedly connected to the end of the connecting block 30 close to the fixed block 26.

[0027] See also Figure 1 , Figure 3 and Figure 4 In this embodiment, the lower end surface of the first adjusting block 15 is in contact with the upper end surface of the bearing block 1 , and the first adjusting block 15 is located directly above the second slot body 9 .

[0028] See also Figure 4 In this embodiment, the third electric cylinder 20 and the second hinge seat 19 are staggered, the height of the second extrusion block 21 is greater than the height of the movable cylinder 18, and the second extrusion block 21 is arc-shaped.

[0029] See also Figure 5 and Figure 6In this embodiment, a bolt 23 is threadedly installed on the side wall of the bearing block 1, a screw hole 25 is penetrated through the insert block 24, and the bolt 23 passes through the wall layer of the bearing block 1 and is threadedly installed on the inner wall of the screw hole 25.

[0030] See also Figure 6 In this embodiment, the outer pressure block 31 is located above the inner pressure block 28 , and the two outer pressure blocks 31 are symmetrical with respect to the fixed block 26 . The inner pressure block 28 is a semi-cylindrical structure, and the two inner pressure blocks 28 are symmetrical with respect to the fixed block 26 .

[0031] See also Figure 1 , Figure 2 and Figure 4 In this embodiment, the central axis of the supporting cylinder 5 and the central axis of the movable cylinder 18 are collinear, and the central axis of the second extrusion block 21 and the central axis of the movable cylinder 18 are collinear.

[0032] When working, first, place the metal barrel body to be dented on the inner wall of the bearing tube 5, then start the first electric cylinder 7 to move the first extrusion block 8 toward the center of the bearing tube 5, and then the outer wall of the metal barrel body can be extruded and fixed, and then the motor 13 is turned on to drive the gear 14 to rotate, and the gear 14 and the gear ring 4 are meshed with each other, which will drive the rotating tube 3 to rotate, and the rotating tube 3 will drive the bearing tube 5 to rotate, thereby driving the metal barrel body that has been squeezed and fixed to rotate, and at this time, the upper part of the outer wall of the metal barrel body will move along the inner wall of the four second extrusion blocks 21;

[0033] Then, the inner and outer walls of the metal barrel are concavely pressed, and the insert block 24 is first placed on the inner wall of the fourth slot 22, and the bolt 23 is threaded through the wall layer of the bearing block 1 and installed on the inner wall of the screw hole 25, so that the insert block 24 is stably installed and fixed on the bearing block 1;

[0034] Next, the fifth electric cylinder 29 is turned on to move the connecting block 30 toward the direction where the fixing block 26 is located, so that the outer pressing block 31 contacts the upper part of the outer wall of the metal barrel body, and the upper part of the outer wall of the metal barrel body can be dented. The fourth electric cylinder 27 is turned on to move the inner pressing block 28 toward the inner wall of the metal barrel body, until the inner wall of the metal barrel body is squeezed and deformed, and the upper part of the inner wall of the metal barrel body can be dented.

[0035] When it is necessary to adjust the position of the barrel body relative to the pressure head, the first extrusion block 8 is released from the extrusion of the outer wall of the metal barrel body, and the third electric cylinder 20 is turned on to make the second extrusion block 21 squeeze the side wall of the metal barrel body. Then, the second electric cylinder 10 is turned on to make the lifting block 11 move upward, which will cause the first adjustment block 15 to rotate upward, and the second adjustment block 17 will drive the movable cylinder 18 to move upward, thereby realizing the upward movement of the metal barrel body. Then, the inner pressure block 28 and the outer pressure block 31 are used again to press the parts of the metal barrel body at different depths.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A denting device for the side wall of a metal barrel-shaped container, comprising a bearing block (1); characterized in that: The upper end of the bearing block (1) is fixedly connected to a fixed disk (2), a rotating cylinder (3) is rotatably mounted on the inner wall of the fixed disk (2), a gear ring (4) is fixedly connected to the side wall of the rotating cylinder (3), a bearing cylinder (5) is fixedly connected to the upper end of the rotating cylinder (3), the bottom of the bearing cylinder (5) is a closed structure, the inner wall of the bearing cylinder (5) is provided with uniformly distributed first grooves (6), the inner wall of the first grooves (6) is movably provided with first extrusion blocks (8), the outer wall of the bearing cylinder (5) is fixedly connected to uniformly distributed first electric cylinders (7), the output shaft of the first electric cylinder (7) passes through the wall layer of the bearing cylinder (5) and is fixedly connected to the first extrusion block (8) at one end away from the center of the bearing tube (5), the upper end of the bearing block (1) is provided with evenly distributed second grooves (9), the inner wall bottom surface of the second grooves (9) is fixedly connected to a second electric cylinder (10), the upper end of the output shaft of the second electric cylinder (10) is fixedly connected to a lifting block (11), the upper end of the bearing block (1) is provided with a third groove (12), the inner wall bottom surface of the third grooves (12) is fixedly connected to a motor (13), the output shaft of the motor (13) passes through the fixed plate (2) and is fixedly connected to a gear (14), the gear (14) and the gear ring (4) are meshed with each other, and the side wall of the fixed plate (2) is hinged with four first adjustment The first adjusting block (15) is fixedly connected to a first hinge seat (16) at the upper end of the first adjusting block (15), a second adjusting block (17) is hingedly connected to the first hinge seat (16), a movable cylinder (18) is movably arranged above the bearing block (1), an outer wall of the movable cylinder (18) is fixedly connected to four evenly distributed second hinge seats (19), the other end of the second adjusting block (17) is hingedly connected to the second hinge seat (19), an outer wall of the movable cylinder (18) is fixedly connected to evenly distributed third electric cylinders (20), an output shaft of the third electric cylinder (20) passes through the wall layer of the movable cylinder (18) and is fixedly connected to a second extrusion block (21), and the bearing A fourth slot body (22) is provided at the upper end of the carrier block (1); an insert block (24) is movably provided on the inner wall of the fourth slot body (22); one end of the insert block (24) is fixedly connected to a fixed block (26); both sides of the fixed block (26) are fixedly connected to a fourth electric cylinder (27) and a fifth electric cylinder (29); the fifth electric cylinder (29) is located above the fourth electric cylinder (27); an inner pressure block (28) is fixedly connected to the output shaft of the fourth electric cylinder (27); a connecting block (30) is fixedly connected to the output shaft of the fifth electric cylinder (29); and an outer pressure block (31) is fixedly connected to one end of the connecting block (30) close to the fixed block (26).

2. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: The lower end surface of the first adjustment block (15) is in contact with the upper end surface of the bearing block (1), and the first adjustment block (15) is located directly above the second slot body (9).

3. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: The third electric cylinder (20) and the second hinge seat (19) are arranged in a staggered manner, the height of the second extrusion block (21) is greater than the height of the movable cylinder (18), and the second extrusion block (21) is arc-shaped.

4. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: A bolt (23) is threadedly mounted on the side wall of the bearing block (1), a screw hole (25) is formed through the insert block (24), and the bolt (23) passes through the wall layer of the bearing block (1) and is threadedly mounted on the inner wall of the screw hole (25).

5. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: The outer pressure block (31) is located above the inner pressure block (28), and the two outer pressure blocks (31) are symmetrical with respect to the fixed block (26).

6. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: The internal pressure block (28) has a semi-cylindrical structure, and the two internal pressure blocks (28) are symmetrical with respect to the fixed block (26).

7. The denting device for the side wall of a metal barrel-shaped container according to claim 1, characterized in that: The central axis of the bearing cylinder (5) and the central axis of the movable cylinder (18) are collinear, and the central axis of the second extrusion block (21) and the central axis of the movable cylinder (18) are collinear.