Deep cupping device

Abstract

The present application relates to oil storage cylinder convex point processing technical field, especially to a kind of deep cylinder inner convex point extruding device, when the oil storage cylinder is extruded and processed by inside to outside convex point, the inner side wall of the oil storage cylinder is supported and limited by the support pipe of being threaded, and the outer wall of the oil storage cylinder is ringed and is tightly limited by the cladding assembly of ringed cladding, the both ends of the oil storage cylinder are respectively limited by the limiting plate, and the end is tightly limited by the claw, specifically by the cooperation of support pipe, cladding assembly, limiting plate and tight claw, it is realized that the oil storage cylinder is ringed, axially all-around support and limit, so that the oil storage cylinder does not appear displacement when forming convex point, leading to processing deviation, and, by the inner and outer limit combination of support pipe and cladding assembly, it is guaranteed that the convex point processing part of the oil storage cylinder does not appear pipe diameter deformation due to the force action when convex point processing, improve the processing precision of the oil storage cylinder.

Description

Technical Field

[0001] This invention relates to the field of oil reservoir protrusion processing technology, and particularly to a deep cylinder protrusion extrusion device. Background Technology

[0002] Oil reservoirs are essential components of automotive shock absorbers, typically machined from hollow round tubes. Due to structural requirements, some oil reservoirs have rectangular protrusions on their bodies to prevent rotation during use. Currently, the main methods for machining rectangular grooves in oil reservoirs on the market are external stamping, one-piece molding, and internal extrusion. External stamping can affect the roundness of the stamped portion of the oil reservoir, causing deformation. One-piece molding uses a single mold suitable only for one type of oil reservoir, resulting in excessive costs. Internal extrusion, due to its structural limitations, can only machine rectangular protrusions shortly from the cylinder opening and cannot machine protrusions on deeper cylinders.

[0003] For example, Chinese patent application number 202211407679.7 discloses an automatic forming machine for metal pipe fittings with double protrusions. Specifically, it includes a cylinder body, a piston 1 is arranged inside the cylinder body, a servo electric cylinder is arranged on the top outer wall of the cylinder body, one end of the output shaft of the servo electric cylinder is connected to the piston 1 by bolts, a support tube is integrally formed on the bottom outer wall of the cylinder body, a guide hole is arranged inside the support tube, a connecting channel is arranged inside the support tube, the guide hole is connected to the cylinder body through the connecting channel, an extrusion column 1 and an extrusion column 2 are arranged inside the guide hole, a piston 2 is fixed at one end of each of the extrusion column 1 and the extrusion column 2, and a limit groove is arranged on the bottom outer wall of each of the extrusion column 1 and the extrusion column 2.

[0004] Although the above-mentioned technical solution can process double protrusions on pipe fittings, the following technical problems still exist when processing double protrusions on pipe fittings: 1. It is impossible to achieve synchronous positioning of both ends of the pipe fitting, which will cause the position of the protrusion on the pipe fitting to deviate; 2. The depth of the protrusion on the pipe fitting cannot be precisely adjusted; 3. When the pipe fitting is formed with protrusions, if the pipe fitting is not fully positioned, the formed protrusion will cause the pipe fitting to deform under stress. Summary of the Invention

[0005] To address the above problems, this invention provides a deep cylinder internal protrusion extrusion device. Through the cooperation of the support tube, the covering component, the limiting plate, and the clamping claw, the device achieves all-round support and limiting of the oil storage cylinder in the circumferential and axial directions. This prevents displacement of the oil storage cylinder during protrusion forming, thus avoiding processing deviations. Furthermore, the combination of inner and outer limiting of the support tube and the covering component ensures that the protrusion processing area of ​​the oil storage cylinder will not deform due to the force applied during protrusion processing, thereby improving the processing accuracy of the oil storage cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A deep cylinder internal protrusion extrusion device is provided. When the oil storage cylinder is subjected to protrusion extrusion processing from the inside to the outside, the inner wall of the oil storage cylinder is supported and limited by the through-through support pipe, and the outer wall of the oil storage cylinder is circumferentially clamped and limited by the circumferentially wrapped covering component. The two ends of the oil storage cylinder are respectively clamped and limited by the limiting plate and the clamping claw.

[0008] As an improvement, the support tube is horizontally installed via a mounting base. A protrusion extrusion assembly is installed on the support tube, and the protrusion extrusion assembly includes a protrusion core and an inclined top shaft. The protrusion core is radially lifted along the oil reservoir, and the inclined top shaft passes through the support tube. The inclined top shaft is axially telescopically movable along the support tube, and the inclined top shaft extrudes the protrusion core through an inclined surface, causing the protrusion core to be lifted onto the side wall of the oil reservoir and processed from the inside out.

[0009] As an improvement, the protruding core is elastically mounted on the arc-shaped plate, which is detachably mounted on the opening of the support tube by means of a snap fastener.

[0010] As an improvement, the coating component includes an upper coating block and a lower coating block, both of which are slidably arranged along the radial direction of the oil reservoir. The upper and lower coating blocks close together to encircle the oil reservoir, thereby limiting the circumferential degree of freedom of the oil reservoir.

[0011] As an improvement, the inner wall of the upper covering block is recessed with a raised groove, which is correspondingly matched with the raised core.

[0012] As an improvement, the outer rings of the upper and lower covering blocks are provided with a clamping module. The clamping module moves and adjusts along the axial direction of the support tube, and the clamping module drives the upper and lower covering blocks to close by squeezing with inclined surfaces.

[0013] As an improvement, the limiting plate is sleeved on the support tube, and the limiting plate is movably arranged along the axial direction of the support tube to adjust the depth of the oil storage cylinder sleeved on the support tube.

[0014] As an improvement, the clamping claw is linked to the inclined top shaft. When the inclined top shaft pushes and lifts the protruding core, the inclined top shaft simultaneously drives the clamping claw to open and clamp the end edge of the oil reservoir.

[0015] As an improvement, when the inclined shaft drives the clamping claw to retract, the clamping claw retracts to within the inner diameter range of the support tube.

[0016] As an improvement, the clamping claw is threadedly connected to the support pipe via a threaded connecting pipe. When the sleeve depth of the oil reservoir changes, the clamping claw changes synchronously by adjusting the depth of the threaded connecting pipe screwed into the support pipe.

[0017] The beneficial effects of this invention are as follows:

[0018] (1) The present invention uses the inner wall of the support tube oil storage cylinder and the outer covering component to cover the oil storage cylinder to achieve the internal and external support and fixation of the protrusion processing part. At the same time, the covering component hugs the oil storage cylinder and limits the circumferential movement of the oil storage cylinder. With the cooperation of the limiting plate and the tightening claw, the radial ends of the oil storage cylinder are blocked and limited, realizing the circumferential and axial all-round limiting of the oil storage cylinder. This ensures that the oil storage cylinder will not be displaced when forming the protrusion, which would lead to processing deviation. In addition, it ensures that the protrusion processing part of the oil storage cylinder will not cause the pipe diameter deformation of the oil storage cylinder due to the force during the protrusion processing, thus improving the processing accuracy of the oil storage cylinder.

[0019] (2) By improving the limiting plate, the limiting plate can move axially in the support tube, thereby adapting to the processing of protrusions at different depths on oil storage tanks of different lengths and specifications, making the range of applicable product specifications wider, the applicability stronger, and saving processing costs.

[0020] (3) The present invention links the pushing of the inclined top shaft with the opening and closing of the clamping claw, so that before the inclined top shaft lifts the protruding core, it first drives the clamping claw to open and limit the axial end of the oil reservoir. Then, the inclined top shaft lifts the protruding core to complete the protrusion processing. The entire processing steps are closely connected and do not interfere with each other, which can perfectly process a high-precision protruding oil reservoir. In addition, the clamping claw can retract as the inclined top shaft moves and resets, so that the loading and unloading of the oil reservoir is smooth and the operation of the top claw is fully automatic.

[0021] (4) The present invention designs the installation structure of the clamping claw and the support tube so that the clamping claw can be moved and adjusted in the axial direction of the support tube, thereby adapting to the processing of oil storage cylinders of different lengths. When adjusting, it is only necessary to rotate the clamping claw so that the clamping claw can be moved on the threaded connecting tube without disassembly. The whole adjustment process is convenient and efficient.

[0022] In summary, this invention has the advantages of high automation, high processing accuracy, high yield, low processing cost, and convenient and quick operation, and is especially suitable for the field of protrusion forming processing technology for automotive oil reservoirs. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2This is a schematic cross-sectional view of the present invention;

[0025] Figure 3 This is a partial structural diagram of the encapsulation component of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the overlay block of the present invention;

[0027] Figure 5 This is a cross-sectional view of the clamping module of the present invention;

[0028] Figure 6 This is a schematic diagram of a partial structure of the support tube of the present invention;

[0029] Figure 7 This is a front view schematic diagram of the convex core structure of the present invention;

[0030] Figure 8 This is a schematic cross-sectional view of the convex core structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the inclined top shaft of the present invention;

[0032] Figure 10 This is a schematic diagram of the clamping claw in the open state of the present invention;

[0033] Figure 11 This is a schematic diagram of the clamping claw clamping the oil reservoir with openings at both ends according to the present invention.

[0034] Figure 12 This is a schematic diagram of the adsorption state of the clamping claw on the oil reservoir with one end open according to the present invention;

[0035] Figure 13 This is a schematic cross-sectional view of the clamping claw structure of the present invention;

[0036] Figure 14 This is a schematic diagram of the retracted state of the clamping claw of the present invention;

[0037] Figure 15 This is a schematic diagram of the three-dimensional structure of the threaded connecting pipe of the present invention;

[0038] Figure 16 This is a schematic diagram of the three-dimensional structure of the movable block of the present invention;

[0039] Figure 17 This is a schematic diagram of the three-dimensional structure of the clamping claw of the present invention;

[0040] Figure 18 This is a schematic diagram of the three-dimensional structure of the threaded ring of the present invention;

[0041] Figure 19 This is a three-dimensional structural diagram of the connector of the present invention.

[0042] The diagram shows the following components: support pipe 1, oil reservoir 10, mounting base 11, opening 110, buckle 1101, covering assembly 2, slide rail module 20, hook spring 201, upper covering block 21, protrusion and groove 211, metal block 212, lower covering block 22, clamping module 23, tapered groove 231, clamping cylinder 232, limiting plate 3, electric linear module 31, clamping claw 4, waist-shaped groove 40, guide shaft 401, threaded connecting pipe 41, notch 410, guide groove 4101, threaded pipe 411, threaded secondary pipe 412, and moving block 41. 3. Semi-circular protrusion 4131, connector 414, buffer spring 4141, threaded shaft 415, limit nut 4151, limit head 4152, protrusion 416, threaded ring 417, slot 418, protrusion extrusion assembly 5, protrusion core 51, arc plate 511, mounting plate 5111, through hole 5112, pin 5113, protrusion forming end 512, extrusion end 513, spring ring 514, square limit plate 515, inclined top shaft 52, oil cylinder 520, inclined surface 521, connecting part 522, extrusion part 523. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Example 1:

[0047] like Figures 1-13As shown, a deep cylinder internal protrusion extrusion device is used. When the oil storage cylinder 10 is processed by protrusion extrusion from the inside to the outside, the inner side wall of the oil storage cylinder 10 is supported and limited by the through support pipe 1, and the outer wall of the oil storage cylinder 10 is circumferentially clamped and limited by the circumferentially wrapped covering component 2. The two ends of the oil storage cylinder 10 are respectively clamped and limited by the limiting plate 3 and the clamping claw 4.

[0048] Specifically, the support tube 1 is horizontally installed via the mounting base 11. The inner diameter of the oil reservoir 10 is adapted to the outer diameter of the support tube 1, allowing the oil reservoir 10 to be smoothly fitted onto the support tube 1. The support tube 1 supports the inner ring of the oil reservoir 10. A protrusion extrusion assembly 5 is installed on the support tube 1. The protrusion extrusion assembly 5 includes a protrusion core 51 and an inclined top shaft 52. The protrusion core 51 is radially lifted along the oil reservoir 10. Specifically, the protrusion forming end 512 of the protrusion core 51 is square, while the extrusion end 513 of the protrusion core 51 is spherical. The protrusion core 51 is elastically mounted on the arc plate 511 via a spring coil 514. Specifically, a U-shaped mounting plate 5111 is provided on the arc plate 511. A through hole 5112 is provided in the mounting plate 5111 for the protruding core 51 to pass through. The protruding core 51 is inserted into the mounting plate 5111. A square limiting plate 515 is provided on the protruding core 51. The two ends of the spring coil 514 abut against the square limiting plate 515 and the arc plate 511 respectively. After the protruding core 51 is lifted, it is elastically reset by the spring coil 514. The two ends of the arc plate 511 are provided with inserts 5113. A buckle 1101 is provided at the opening 110 of the support tube 1. The inserts 5113 and the buckle 1101 are inserted and cooperate to form a buckle, so that the arc plate 511 can be detachably installed on the opening 110 of the support tube 1 through the buckle. This allows the protruding core 51 to be replaced at any time, and the protrusion shape on the oil reservoir 10 can be switched at any time.

[0049] The inclined shaft 52 is inserted into the support tube 1. The inclined shaft 52 is driven by the oil cylinder 520 at its end and moves axially along the support tube 1. The inclined shaft 52 is configured with a variable diameter and includes a connecting part 522 that matches the inner diameter of the support tube 1 and a pressing part 523 with a diameter smaller than that of the connecting part 522. The connecting part 522 cooperates with the mounting base 11 to support the support tube 1. The inclined surface 521 is set on the pushing end of the pressing part 523 and abuts against the pressing end 513. When the inclined shaft 52 extends and retracts, the pressing guide of the inclined surface 521 causes the protrusion core 51 to rise and fall. When the protrusion core 51 rises, protrusions are machined from the inside to the outside on the side wall of the oil reservoir 10.

[0050] In order to ensure that the circumferential degree of freedom of the oil reservoir 10 is restricted during the forming protrusion processing, the present invention adopts a covering component 2 to cover and limit the circumferential degree of freedom of the oil reservoir 10. Specifically, the covering component 2 includes an upper covering block 21 and a lower covering block 22.

[0051] The upper covering block 21 and the lower covering block 22 are both slidably adjusted along the radial direction of the oil reservoir 10 via the slide rail module 20. Both the upper covering block 21 and the lower covering block 22 have semi-circular covering grooves 211. When the covering grooves 211 are closed, the upper covering block 21 and the lower covering block 22 encircle the oil reservoir 10 in the circumferential direction, limiting the circumferential freedom of the oil reservoir 10. It should be noted that the upper covering block 21 and the lower covering block 22 are made of rubber material with high hardness and rigidity. The inner wall of the upper covering block 21 has a recessed protrusion groove 211, which corresponds to and cooperates with the protrusion core 51. Furthermore, the portion of the upper covering block 21 with the protrusion groove 211 is separately constructed using a separate metal block 212. The metal block 212 is connected to the upper covering block 21 via a threaded component or by embedding.

[0052] When the upper covering block 21 and the lower covering block 22 are closed and covered, they are squeezed and covered by the externally arranged clamping module 23. Specifically, the overall shape of the upper covering block 21 and the lower covering block 22 is similarly set as a semi-conical shape. The clamping module 23 is provided with a conical groove 231 that is adapted to the upper covering block 21 and the lower covering block 22. Specifically, the clamping module 23 is adjusted by moving along the axial direction of the support tube 1 driven by the clamping cylinder 232. After the conical groove 231 is inserted and fitted with the upper covering block 21 and the lower covering block 22, as the clamping module 23 continues to move, the clamping module 23 drives the upper covering block 21 and the lower covering block 22 to close by squeezing with the inclined surface.

[0053] It should be explained in detail here that, since the upper covering block 21 and the lower covering block 22 are made of rubber, while the clamping module 23 is made of metal, when the clamping module 23 squeezes the upper covering block 21 and the lower covering block 22, the upper covering block 21 and the lower covering block 22 will undergo a certain deformation, tightly covering the oil storage cylinder 10, thus limiting the circumferential movement of the oil storage cylinder 10, and also forming a certain limiting effect in the axial direction of the oil storage cylinder.

[0054] Furthermore, it should be noted that after the clamping module 23 is removed, the upper covering block 21 is moved and reset by the pulling of the stretched hook spring 201, while the lower covering block 22 is moved and reset by gravity.

[0055] When the oil reservoir is being processed for protrusions, one end of the oil reservoir 10 is limited by a limiting plate 3 in the axial direction. In order to adapt to the processing of oil reservoirs 10 of different lengths, the limiting plate 3 is sleeved on the support tube 1. The limiting plate 3 is moved along the axial direction of the support tube 1 to adjust the depth of the oil reservoir 10 sleeved on the support tube 1.

[0056] Specifically, the limiting plate 3 is driven to move by the electric linear module 31 set below, and the lower end of the limiting plate 3 is slidably adjusted by the slide rail module.

[0057] Furthermore, relative to the limiting plate 3, the other end of the oil reservoir 10 is tightened and limited by the clamping claw 4. Specifically, in this invention, the clamping claw 4 is preferably provided in 4 sets. The 4 sets of clamping claw 4 are arranged at equal intervals along the circumference of the oil reservoir 10, and each set of clamping claw 4 is provided with a waist-shaped groove 40. A guide shaft 401 passes through the waist-shaped groove 40. The clamping claw 4 can rotate and swing through the cooperation between the waist-shaped groove 40 and the guide shaft 401. It should be noted that when the clamping claw 4 rotates and swings open, the clamping claw 4 can clamp the end edge of the oil reservoir 10. When the clamping claw 4 closes, the clamping claw 4 can retract to the inner diameter range of the support tube 1, so that the oil reservoir 10 can be sleeved on the support tube 1.

[0058] It should be emphasized that the oil reservoir 10 processed by this invention can be a cylindrical workpiece with open ends or a cylindrical workpiece with one end open and the other end closed. When the oil reservoir 10 is a cylindrical workpiece with open ends, the clamping claw 4 rotates and swings to unfold, clamping the end edge of the oil reservoir 10. When the oil reservoir 10 is a cylindrical workpiece with one end open and the other end closed, a strong magnet is provided on the clamping claw 4. When the clamping claw 4 swings and unfolds, the clamping claw 4 adheres to the inner wall of the oil reservoir 10. Through the strong magnet, the clamping claw 4 just attracts the oil reservoir 10, limiting the corresponding end of the oil reservoir 10.

[0059] Example 2:

[0060] Referring to Example 1, the difference between Example 2 and Example 1 lies in the following:

[0061] like Figures 10-19As shown, the clamping claw 4 is connected to the support tube 1 via a threaded connecting tube 41. Specifically, one end of the threaded connecting tube 41 is a threaded tube 411 with a full circle of threads, and the end of the support tube 1 that is threaded to the threaded connecting tube 41 is also provided with an internal thread. The threaded connecting tube 41 and the support tube 1 are connected by threads, and the threaded connecting tube 41 can be adjusted by the internal thread to adjust the depth of the threaded connecting tube 41 screwed into the support tube 1, thereby adjusting the clamping claw 4 according to the sleeve depth of the oil reservoir 10. That is, when the sleeve depth of the oil reservoir 10 on the support tube 1 becomes shorter, the depth of the threaded connecting tube 41 screwed into the support tube 1 becomes less, causing the threaded connecting tube 41 to extend outward, thereby ensuring that the clamping claw 4 is always at the end of the oil reservoir 10, and vice versa.

[0062] The other end of the threaded connecting pipe 41 is a threaded auxiliary pipe 412 with a notch 410. Semi-circular guide grooves 4101 are formed on both sides of the notch 410. A moving block 413 is slidably mounted on the guide groove 4101. Semi-circular protrusions 4131 corresponding to and cooperating with the guide groove 4101 are provided on both sides of the moving block 413. A guide shaft 401 passes through the moving block 413, allowing the clamping claw 4 to be suspended on the moving block 413. The clamping claw 4 is located at the rotating and swinging end of the threaded connecting tube 41 and is hinged through the connector 414. The connector 414 is connected to the inclined top shaft 52 through the threaded shaft 415, so that the clamping claw 4 and the inclined top shaft 52 are linked. That is, when the inclined top shaft 52 pushes and lifts the protruding core 51, the inclined top shaft 52 simultaneously drives the clamping claw 4 to open. When the inclined top shaft 52 pulls back, the inclined top shaft 52 drives the clamping claw 4 to close.

[0063] Furthermore, a threaded shaft 415 passes through the connector 414, and a limit nut 4151 is provided on the threaded shaft 415. A buffer spring 4141 is provided between the limit nut 4151 and the connector 414. When the inclined top shaft 52 pushes the connector 414 through the threaded shaft 415, causing the clamping claw 4 to open into place, the buffer spring 4141 buffers the clamping claw 4 to enter place before the protrusion core 51. Then the protrusion core 51 completes the protrusion processing. The end of the threaded shaft 415 that penetrates the connector 414 is provided with a limit head 4152. When the inclined top shaft 52 is pulled back to reset, the threaded shaft 415 pulls the connector 414 to move through the limit head 4152.

[0064] It should also be noted that the movable block 413 has a protrusion 416 protruding outward, and a threaded ring 417 is fitted on the threaded connecting pipe 41. The inner ring of the threaded ring 417 has a groove 418. Through the cooperation of the protrusion 416 and the groove 418, the movable block 413 can be fixed in the notch 410. Furthermore, through the rotation of the threaded ring 417, all the protrusions 416 can be moved synchronously, thereby driving all the clamping claws 4 to move synchronously, realizing the adjustment of the movement of the clamping claws 4. This allows the clamping claws 4 to be able to just press against the top of the oil reservoir 10 when they are open, or to just adhere to the inner wall of the oil reservoir 10.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deep cylinder inner convex point extrusion device, characterized in that: When the oil storage cylinder (10) is subjected to inner-to-outer convex point extrusion processing, the inner side wall of the oil storage cylinder (10) is supported and limited by the support pipe (1) penetrating through, and the outer wall of the oil storage cylinder (10) is circumferentially tightly limited by the circumferentially wrapped wrapping assembly (2), and the two ends of the oil storage cylinder (10) are respectively limited by the limiting plate (3) and the clamping claw (4). The support pipe (1) is horizontally installed by the mounting seat (11), the convex point extrusion assembly (5) is installed on the support pipe (1), the convex point extrusion assembly (5) comprises a convex point core (51) and an inclined jacking shaft (52), the convex point core (51) is vertically arranged along the radial direction of the oil storage cylinder (10), the inclined jacking shaft (52) penetrates through the support pipe (1), the inclined jacking shaft (52) is arranged to axially stretch and contract along the support pipe (1), and the inclined jacking shaft (52) extrudes the convex point core (51) through the inclined surface (521), so that the convex point core (51) is jacked on the side wall of the oil storage cylinder (10) to process the convex point from the inside to the outside. The clamping claw (4) is connected with the inclined jacking shaft (52), when the inclined jacking shaft (52) pushes and jacks the convex point core (51), the inclined jacking shaft (52) synchronously drives the clamping claw (4) to open and clamp the end edge of the oil storage cylinder (10). When the inclined jacking shaft (52) drives the clamping claw (4) to close, the clamping claw (4) is retracted to the inner diameter range of the support pipe (1). The clamping claw (4) is threadedly connected with the support pipe (1) through the threaded connecting pipe (41), when the sleeving depth of the oil storage cylinder (10) changes, the clamping claw (4) synchronously changes by adjusting the depth of the threaded connecting pipe (41) screwed into the support pipe (1).

2. The deep cylinder inner convex point extrusion device according to claim 1, characterized in that: The convex point core (51) is elastically mounted on the arc-shaped plate (511), and the arc-shaped plate (511) is detachably mounted on the opening (110) of the support pipe (1) through buckling.

3. The deep cylinder inner convex point extrusion device according to claim 1, characterized in that: The wrapping assembly (2) comprises an upper wrapping block (21) and a lower wrapping block (22), the upper wrapping block (21) and the lower wrapping block (22) are arranged to slide along the radial direction of the oil storage cylinder (10), and the upper wrapping block (21) and the lower wrapping block (22) are arranged to wrap the oil storage cylinder (10) in the circumferential direction, and limit the circumferential freedom degree of the oil storage cylinder (10).

4. The deep cylinder inner convex point extrusion device according to claim 3, characterized in that: The inner side wall of the upper wrapping block (21) is recessed to form a convex point groove (211), and the convex point groove (211) is correspondingly arranged with the convex point core (51).

5. The deep cylinder inner convex point extrusion device according to claim 3, characterized in that: The outer ring of the upper and lower covering blocks (21) and (22) is provided with a clamping module (23), which is adjusted along the axial movement of the support pipe (1), and the clamping module (23) drives the upper and lower covering blocks (21) and (22) to fold through inclined surface cooperation extrusion.

6. The deep barrel inner protrusion point extrusion device according to claim 1, characterized in that: The limiting plate (3) is sleeved on the support pipe (1), and the limiting plate (3) is arranged to move along the axial direction of the support pipe (1) to adjust the depth of the oil storage cylinder (10) sleeved on the support pipe (1).

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