CN113426874B

CN113426874B - Hydraulic inclined spinning flanging machine

Info

Publication number: CN113426874B
Application number: CN202110837931.7A
Authority: CN
Inventors: 刘新; 刘波; 潘艳飞; 韩辉; 朱益林; 许健
Original assignee: Jiangsu Yangtze River Intelligent Manufacturing Research Institute Co ltd
Current assignee: Jiangsu Yangtze River Intelligent Manufacturing Research Institute Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2023-06-02
Anticipated expiration: 2041-07-23
Also published as: CN113426874A

Abstract

The invention discloses a hydraulic bevel spinning flanging machine, which comprises a clamping mechanism and a flanging mechanism, wherein the clamping mechanism is suitable for clamping a workpiece, and the flanging mechanism is suitable for extruding the end face to be flanged of the workpiece; the flanging mechanism comprises a pressure plate which is contacted with the end face to be flanged of the workpiece, the end face normal line of the pressure plate is obliquely arranged with the central shaft of the workpiece, and the pressure plate can move in a plane parallel to the end face of the pressure plate and rotate around a fixed central shaft in the plane parallel to the end face of the pressure plate. According to the invention, the edge turnup machine is used for flanging the inclined plane of the workpiece through the inclined arrangement of the end surface normal line of the pressure plate and the central axis of the workpiece, and simultaneously, the pressure plate is used for carrying out rotary motion with different radiuses through the combination of the plane movement of the pressure plate and the rotary motion around the fixed central axis, so that the pressure plate can be contacted with each point on the elliptical end surface of the workpiece.

Description

Hydraulic inclined spinning flanging machine

Technical Field

The invention relates to the field of flanger design, in particular to a hydraulic bevel spinning flanger.

Background

The end face flanging machine of the long cylindrical pipe is quite common, manual and automatic are available, however, the bevel flanging equipment of the long cylindrical pipe is quite few, and the long cylindrical pipe is generally finished by manual flanging, so that the efficiency is quite low.

Disclosure of Invention

The invention provides a hydraulic bevel spinning flanging machine for solving the technical problems that the bevel flanging of a long cylindrical pipe in the prior art can be finished only manually and has low efficiency.

The technical scheme adopted for solving the technical problems is as follows: the hydraulic bevel spinning flanging machine comprises a clamping mechanism and a flanging mechanism, wherein the clamping mechanism is suitable for clamping a workpiece, and the flanging mechanism is suitable for extruding an end face to be flanged of the workpiece; the flanging mechanism comprises a pressure plate which is contacted with the end face to be flanged of the workpiece, the end face normal line of the pressure plate is obliquely arranged with the central shaft of the workpiece, and the pressure plate can move in a plane parallel to the end face of the pressure plate and rotate around a fixed central shaft in the plane parallel to the end face of the pressure plate.

Further, the clamping mechanism comprises a cylinder guide supporting shaft and a base plate, the cylinder guide supporting shaft is suitable for sleeving a cylindrical workpiece, and the cylinder guide supporting shaft and the flanging mechanism are positioned on two sides of the base plate.

The included angle between the cylinder guide supporting shaft and the normal line of the end face of the pressure plate is an acute angle.

The backing plate is provided with an elliptical opening which is suitable for the workpiece to pass through; when the pressing plate presses the workpiece, the flanging of the workpiece is attached to the backing plate.

Furthermore, the clamping mechanism further comprises a frame which is suitable for a workpiece to pass through, and the backing plate is formed by splicing a left backing plate and a right backing plate.

The left base plate is fixed with the frame, the right base plate is connected with the frame through an opening and closing mechanism, and the opening and closing mechanism drives the right base plate to be close to or far away from the left base plate, so that arc-shaped side lines of the left base plate and the right base plate are spliced to form an oval opening.

Further, the opening and closing mechanism is a push-pull air cylinder fixed on the frame, and a piston rod of the push-pull air cylinder is fixedly connected with the right backing plate.

Further, the flanging mechanism comprises a rotating shaft, a driving motor and a fixed disc, wherein the driving motor is suitable for driving the rotating shaft to rotate, and the fixed disc is fixedly connected with the rotating shaft; the rotating shaft is arranged in parallel with the normal line of the end face of the pressure plate.

The linear driving mechanism is fixed on the fixed disc, and the pressure disc is connected with one end of the fixed disc in a sliding manner and is driven by the linear driving mechanism to move along a straight line in a plane parallel to the end face of the pressure disc.

Further, the terminal surface of fixed disk is fixed with first slide rail, and sliding fit has the slider on the first slide rail, the pressure disk rotates with the slider to be connected, the slider is connected with linear drive mechanism.

Further, the flanging mechanism further comprises a box body, a box seat and a base, and the rotating shaft is rotatably connected in the box body.

The box body is fixed on the box seat, and a vertical locking mechanism is connected between the box seat and the base, so that the box seat and the base are vertically locked.

The box seat is positioned on the base and driven by the horizontal driving mechanism to reciprocate on the base.

Further, one end of the backing plate, which faces the pressure plate, is provided with a convex edge which protrudes out of the end face of the backing plate, and the convex edge is arranged along the oval opening.

Further, the cylinder guide support shaft comprises a first hydraulic cylinder fixed on the mounting seat, a conical cylinder connected with a piston rod of the first hydraulic cylinder, a shaft cylinder sleeved on the periphery of the piston rod of the first hydraulic cylinder and fixed with the mounting seat, and a tensioning claw sleeved on the periphery of the conical cylinder and fixed with the shaft cylinder, wherein a workpiece is suitable for being sleeved on the tensioning claw.

The diameter of the conical cylinder gradually increases from one end close to the first hydraulic cylinder to one end far away from the first hydraulic cylinder, and when the conical cylinder stretches, the tensioning claw is always attached to the outer surface of the conical cylinder.

Further, one end of the rotating shaft far away from the fixed disc is connected with a rotating joint, a fixed support is fixed on the box body, the outer ring of the rotating joint is fixedly connected with the fixed support, the inner ring of the rotating joint is fixedly connected with the rotating shaft, and the rotating joint is connected with the linear driving mechanism through an oil pipe.

The beneficial effects of the invention are as follows:

(1) According to the invention, the edge turnup machine is used for flanging the inclined plane of the workpiece through the inclined arrangement of the end surface normal line of the pressure plate and the central axis of the workpiece, and simultaneously, the pressure plate is used for carrying out rotary motion with different radiuses through the combination of the plane movement of the pressure plate and the rotary motion around the fixed central axis, so that the pressure plate can be contacted with each point on the elliptical end surface of the workpiece.

(2) The backing plate is formed by splicing the left backing plate and the rear backing plate, and the opening and closing of the backing plate are controlled through the opening and closing mechanism, so that the workpiece can be disassembled and assembled more conveniently.

(3) According to the invention, the tensioning claw and the convex edge can be quickly replaced, so that workpieces with different diameters can be more conveniently turned over.

(4) According to the invention, the rotary motor drives the mounting seat to rotate, so that the included angle between the cylinder guide support shaft and the normal line of the end surface of the pressure plate is changed, and workpieces with different bevel angles can be more conveniently turned.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a front view of an embodiment of a hydraulic bezel spin flanger according to the present invention;

FIG. 2 is a top view of an embodiment of the hydraulic bezel spin flanger of the present invention;

FIG. 3 is an enlarged view of FIG. 1 at a;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 5 is a B-B cross-sectional view of FIG. 1;

FIG. 6 is a C-C cross-sectional view of FIG. 1;

FIG. 7 is a schematic view of the flanging mechanism in the present invention;

FIG. 8 is a front view of an embodiment of a hydraulic bezel spin flanger according to the present invention;

FIG. 9 is a schematic view of the structure of the cylinder guide support shaft in the work piece removal state of the present invention;

fig. 10 is a schematic view of the structure of the cylinder guide support shaft in the working state of the present invention.

In the figure, 1, a clamping mechanism, 101, a cylinder guide supporting shaft, 102, a left backing plate, 103, a right backing plate, 104, a frame, 105, an opening and closing mechanism, 106, a second sliding rail, 107, a first hydraulic cylinder, 108, a mounting seat, 109, a convex edge, 110, an oval opening, 111, a conical cylinder, 112, a shaft cylinder, 113, a tensioning claw, 114, a fixing seat, 115, a rotating motor, 2, a flanging mechanism, 201, a platen, 202, a rotating shaft, 203, a driving motor, 204, a fixed disk, 205, a linear driving mechanism, 206, a bearing, 207, a driving wheel, 208, a rotating pulley, 209, a connecting column, 210, a first sliding rail, 211, a sliding block, 2111, a sliding panel, 2112, a sleeve, 212, a box seat, 213, a box, 214, a base, 2141, a third sliding rail, 2142, a notch, 215, a vertical locking mechanism, 2151, a baffle, 216, a horizontal driving mechanism, 217, a rotating joint, 218, a fixed bracket, 219, and oil pipes.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Example 1

As shown in fig. 1 to 7, a hydraulic bezel spinning flanging machine for flanging a beveled end surface of a cylindrical workpiece, includes:

the flanging mechanism 2 is suitable for extruding the end face to be flanged of the workpiece; the flanging mechanism 2 includes a platen 201 that is in contact with an end face of the workpiece to be flanged, an end face normal of the platen 201 is arranged obliquely to a central axis of the workpiece, and the platen 201 is movable in a plane parallel to the end face of the platen 201 and rotatable around a fixed central axis in a plane parallel to the end face of the platen 201. That is, the platen 201 can perform both rotational movement and planar movement, and the rotation axis of the rotational movement is perpendicular to the direction of movement, and when the platen 201 moves in the plane, the radius of rotation of the platen 201 changes, so that the contact area of the platen 201 with the end face of the workpiece changes. Since the inclined end face of the workpiece is an elliptical end face, it is necessary to change the radius of gyration of the platen 201 so that the platen 201 can be brought into contact with each point on the end face of the workpiece.

The clamping mechanism 1 is used for clamping a workpiece, the workpiece processed by the invention is of a cylindrical tubular structure, and the following clamping mechanism 1 can be selected: the device comprises a cylinder guide supporting shaft 101 and a backing plate, wherein the cylinder guide supporting shaft 101 is suitable for sleeving a cylindrical workpiece, the central shaft of the cylinder guide supporting shaft 101 is the central shaft of the workpiece, and the cylinder guide supporting shaft 101 and the flanging mechanism 2 are positioned on two sides of the backing plate. The angle between the cylinder guide support shaft 101 and the end surface normal of the platen 201 is an acute angle. The backing plate is provided with an oval opening 110 which is suitable for the workpiece to pass through; when the platen 201 presses the workpiece, the flange of the workpiece is attached to the backing plate. As shown in the figure, the diameter of the cylinder guide supporting shaft 101 is slightly smaller than the inner diameter of the workpiece, the cylinder guide supporting shaft 101 is used for supporting the workpiece, the flanging mechanism 2 is located on the left side of the backing plate, the end face of the workpiece to be flanged is located at the rightmost end of the cylinder guide supporting shaft 101, and the end face of the workpiece to be flanged is opposite to the pressure plate 201. The backing plate is used for providing a support surface for the workpiece after flanging, the oval opening 110 is slightly larger than the outer diameter of the workpiece, and when the workpiece is extruded by the flanging mechanism 2, the turnover part of the workpiece is positioned between the backing plate and the pressure plate 201.

The flanging mechanism 2 in the present embodiment includes a rotation shaft 202, a driving motor 203 adapted to drive the rotation shaft 202 to rotate, and a fixed disk 204 fixedly connected with the rotation shaft 202; the rotation shaft 202 is disposed parallel to the end surface normal of the platen 201. The fixed disk 204 is fixed with a linear driving mechanism 205, and the pressure disk 201 is slidably connected to one end of the fixed disk 204 and is driven by the linear driving mechanism 205 to move linearly in a plane parallel to the end face of the pressure disk 201. The rotating shaft 202 can be erected on a fixed structure, the rotating shaft 202 is driven by the driving motor 203, so that the fixed disc 204 is driven to rotate, the fixed disc 204 drives the pressure disc 201 to rotate, and meanwhile, the pressure disc 201 can be driven to move on the fixed disc 204 by the linear driving mechanism 205.

As shown in fig. 7, the rotation shaft 202 is erected in the box 213 and is rotatably connected with the box 213 through a bearing 206, a driving motor 203 is fixed at the top of the box 213, a driving wheel 207 is arranged at the output end of the driving motor 203, one end of the rotation shaft 202 extends out of the box 213 and is sleeved with a rotation belt pulley 208, the driving wheel 207 is connected with the rotation belt pulley 208 through belt transmission, the other end of the rotation shaft 202 extends out of the box 213 and is fixedly connected with a fixed disc 204, the fixed disc 204 is in a hollow roller structure, a linear driving mechanism 205 is fixed inside the fixed disc 204, and the linear driving mechanism 205 can be a hydraulic cylinder, an air cylinder or the like. The end face of the fixed disc 204, on which the pressure disc 201 is arranged, is provided with a through hole, the pressure disc 201 is of a disc-shaped structure, the pressure disc 201 is sleeved and fixed on a columnar connecting column 209, and the connecting column 209 penetrates through the through hole on the fixed disc 204 to be connected with the movable end of the linear driving mechanism 205. The through hole on the fixed disk 204 is in a waist-round or rectangular structure, so that a space is reserved for the plane movement of the connecting column 209 and the pressure disk 201. The center of the pressure plate 201 is hollowed out, and the workpiece is extruded and turned over mainly by the end face of the periphery of the pressure plate 201.

Preferably, one end of the pad facing the platen 201 has a convex edge 109 protruding from the end surface of the pad, and the convex edge 109 is disposed along the oval opening 110. When the workpiece is turned over, the turned-over portion is pressed between the flange 109 and the platen 201. The flange 109 may also be provided separately from the backing plate, for example, the flange 109 may have a shoulder that fits inside the oval opening 110, so that workpieces of different diameters may be more conveniently turned by changing the flange 109 to a different size.

Example two

In the first embodiment, when the platen 201 contacts with the workpiece, the platen 201 only rotates along with the rotation shaft 202, and the platen 201 does not have a free rotation function, so that the friction force between the platen 201 and the workpiece is large, the workpiece is easy to be damaged, and secondly, the plane motion of the platen 201 is controlled by the linear driving mechanism 205 only, and when the rotation shaft 202 rotates rapidly, the linear driving mechanism 205 also rotates along with the rotation, so that stable linear expansion and contraction of the linear driving mechanism 205 are difficult to realize. For this purpose, the present embodiment is modified as follows:

the end surface of the fixed disk 204 is fixed with a first sliding rail 210, a sliding block 211 is in sliding fit with the first sliding rail 210, the pressure disk 201 is rotationally connected with the sliding block 211, and the sliding block 211 is connected with the linear driving mechanism 205. As shown in fig. 6 and 7, the sliding block 211 is composed of a sliding panel 2111 attached to the end surface of the fixed disk 204 and a sleeve 2112 passing through a through hole of the fixed disk 204, the connecting column 209 is located at the inner periphery of the sleeve 2112 and is rotatably connected with the sleeve 2112 through a bearing 206, and both sides of the sliding panel 2111 are attached to the first slide rail 210, so that the sliding panel 2111 reciprocates along the first slide rail 210, and the extending direction of the first slide rail 210 is parallel to the extending direction of the linear driving mechanism 205.

In this embodiment, the linear motion of the platen 201 in the plane may be limited by the first slide rail 210, and the linear driving mechanism 205 need not be completely controlled by the linear driving mechanism 205, and the linear driving mechanism 205 need only be responsible for providing the pushing power. In addition, when the pressure plate 201 is pressed on the end face of the workpiece and rotates around the rotating shaft 202, the pressure plate 201 can do rotary motion around the central shaft of the pressure plate 201, and the pressure plate 201 can freely rotate along the direction of the friction force under the action of the friction force, so that the friction force is reduced, and the abrasion of the pressure plate 201 to the workpiece is reduced.

Example III

Since the backing plate has a function of clamping the workpiece and requires a burring for supporting the workpiece, the oval opening 110 of the backing plate is slightly larger than the outer diameter of the workpiece to be approximately fitted to the outer periphery of the workpiece, and in the above embodiment, the backing plate is of a unitary structure, and it is difficult for the workpiece to pass through the workpiece between the cylindrical guide support shaft 101 and the oval opening 110 when the workpiece is mounted, for which reason, the present embodiment is modified as follows:

the clamping mechanism 1 is suitable for a rack 104 through which a workpiece passes, and the backing plate is formed by splicing a left backing plate 102 and a right backing plate 103. The left pad 102 is fixed with the frame 104, the right pad 103 is connected with the frame 104 through an opening and closing mechanism 105, the opening and closing mechanism 105 drives the right pad 103 to be close to or far away from the left pad 102, so that arc-shaped side lines of the left pad 102 and the right pad 103 are spliced to form an elliptical opening 110, as shown in fig. 3 and 4, the left pad 102 and the right pad 103 are positioned at one end of the frame 104, which faces the flanging mechanism 2, a second sliding rail 106 is fixed on the frame 104, the right pad 103 is clamped in the second sliding rail 106 through a stepped structure at the upper edge and the lower edge, the right pad 103 is always attached to the end face of the frame 104, the opening and closing mechanism 105 can be a push-pull cylinder fixed on the frame 104, and a piston rod of the push-pull cylinder is fixedly connected with the right pad 103. Before installing the workpiece, the right pad plate 103 is pulled out rightward to be in an open state, then the workpiece is installed on the cylinder guide supporting shaft 101 along the direction shown in the figure, and finally the opening and closing mechanism 105 is driven reversely, and the right pad plate 103 approaches to the left until the two are attached.

Example IV

In order to further facilitate the installation of the workpiece, this embodiment is further designed based on the above embodiment as follows: the flanging mechanism 2 further comprises a box seat 212 and a base 214, the box body 213 is positioned on the box seat 212, and a vertical locking mechanism 215 is connected between the box seat 212 and the base 214 so as to enable the box seat 212 and the base 214 to be vertically locked, and the box seat 212 is fixed on the base 214 and driven by a horizontal driving mechanism 216 to reciprocate on the base 214. The top of the base 214 is provided with a third sliding rail 2141, the box base 212 is driven by the horizontal driving mechanism 216 to reciprocate along the third sliding rail 2141, the horizontal driving mechanism 216 can be an air cylinder or a hydraulic cylinder, as shown in fig. 1, the horizontal driving mechanism 216 is fixed on the frame 104, and the movable end of the horizontal driving mechanism 216 is connected to the box base 212, when the workpiece is installed, the horizontal driving mechanism 216 retracts to pull the box 213 to a specified position. The vertical locking mechanism 215 may also be an air cylinder or a hydraulic cylinder, as shown in fig. 5, the fixed part of the vertical locking mechanism 215 is fixed on the base 212, a notch 2142 is formed at the top of the base 214, a baffle 2151 is formed at the movable part of the vertical locking mechanism 215, and the baffle 2151 is located below the notch 2142, when the position of the base 212 is adjusted, the movable part of the vertical locking mechanism 215 is retracted, so that the baffle 2151 is propped against the lower part of the top plate of the base 214, thereby realizing the locking of the base 214 and the base 212.

Example five

On the basis of the above embodiment, the present embodiment increases the tensioning function of the workpiece, and avoids the occurrence of deformation when the workpiece is turned up due to the existence of a gap between the cylindrical guide support shaft and the workpiece, specifically, the cylindrical guide support shaft 101 includes a first hydraulic cylinder 107 fixed on the mounting seat 108, a conical cylinder 111 connected with a piston rod of the first hydraulic cylinder 107, a shaft cylinder 112 sleeved on the outer periphery of the piston rod of the first hydraulic cylinder 107 and fixed with the mounting seat 108, and a tensioning claw sleeved on the outer periphery of the conical cylinder 111 and fixed with the shaft cylinder 112, and the workpiece is suitable for being sleeved on the tensioning claw 113. The diameter of the conical cylinder 111 gradually increases from one end close to the first hydraulic cylinder 107 to one end far away from the first hydraulic cylinder 107, and when the conical cylinder 111 stretches, the tensioning claw 113 is always attached to the outer surface of the conical cylinder 111.

The mounting seat 108 is fixed on the frame 104, the tensioning claw 113 is made of a ductile material, and when the conical cylinder 111 is retracted along with the first hydraulic cylinder 107, the diameter of the end face of the conical cylinder 111 in the same vertical plane is gradually increased, so that the tensioning claw 113 is enlarged, and in a working state, a workpiece can be tensioned to avoid deformation of the workpiece (as shown in fig. 10). When the conical cylinder 111 extends out along with the first hydraulic cylinder 107, the diameter of the end face of the conical cylinder 111 in the same vertical plane is gradually reduced, the tensioning force of the conical cylinder 111 to the tensioning claw 113 is gradually reduced, the tensioning claw 113 is gradually contracted and is always attached to the conical cylinder 111, and at the moment, the opening size of the tensioning claw 113 is smaller than the diameter of a workpiece, so that the workpiece can be conveniently taken out (as shown in fig. 9). In addition, the workpiece with different diameters can be conveniently tensioned by replacing the tensioning claws 113 with different outer diameter sizes.

Example six

When the linear driving mechanism 205 adopts a hydraulic cylinder, since the linear driving mechanism 205 is a rotating member, if a fixed hydraulic station is used for directly supplying oil, an oil pipe winding phenomenon occurs, and for this purpose, the following structure is added in this embodiment: as shown in fig. 7, a rotary joint 217 is connected to one end of the rotary shaft 202 far away from the fixed disk 204, a fixed bracket 218 is fixed to the housing 213, an outer ring of the rotary joint 217 is fixedly connected to the fixed bracket 218, an inner ring of the rotary joint 217 is fixedly connected to the rotary shaft 202, and the rotary joint 217 is connected to the linear driving mechanism 205 through an oil pipe 219.

The rotary joint is a closed rotary connector for 360-degree rotary conveying medium, belongs to the prior art and is commercially available, an input oil port of the rotary joint 217 is connected with a hydraulic station, an output oil port of the rotary joint 217 is connected with the linear driving mechanism 205, and the rotary joint 217 and the linear driving mechanism 205 synchronously rotate, so that the problem of winding of an oil pipe 219 can not occur.

Example seven

In the third embodiment, only the right pad 103 can be pushed and pulled, so the left pad 102 is still very close to the cylinder guiding support shaft 101, which makes the workpiece difficult to install, and the following improvement is made in this embodiment: as shown in fig. 8, a fixed base 114 is fixed on the frame 104, the mounting seat 108 is located on the fixed base 114 and is driven to rotate by a rotating motor 115, when the right pad 103 is opened, the rotating motor 115 is started to rotate the cylinder guide support shaft 105 by a certain angle in the direction of the right pad 103, so that the cylinder guide support shaft is separated from the left pad 102, and a workpiece is conveniently placed.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.

With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A hydraulic inclined spinning flanging machine is characterized in that: the workpiece flanging device comprises a clamping mechanism (1) and a flanging mechanism (2), wherein the clamping mechanism (1) is suitable for clamping a workpiece, and the flanging mechanism (2) is suitable for extruding the end face of the workpiece to be flanged;

the flanging mechanism (2) comprises a pressing disc (201) which is contacted with the end face to be flanged of the workpiece, the end face normal line of the pressing disc (201) is obliquely arranged with the central axis of the workpiece, and the pressing disc (201) can move in the plane parallel to the end face of the pressing disc (201) and rotate around the fixed central axis in the plane parallel to the end face of the pressing disc (201);

the clamping mechanism (1) comprises a cylinder guide supporting shaft (101) and a base plate, wherein the cylinder guide supporting shaft (101) is suitable for sleeving a cylindrical workpiece, and the cylinder guide supporting shaft (101) and the flanging mechanism (2) are positioned on two sides of the base plate;

the included angle between the cylinder guide supporting shaft (101) and the end surface normal of the pressure plate (201) is an acute angle;

the backing plate has an oblong opening (110) therein adapted for the workpiece to pass therethrough; when the pressure plate (201) extrudes the workpiece, the flanging of the workpiece is attached to the backing plate;

the flanging mechanism (2) comprises a rotating shaft (202), a driving motor (203) suitable for driving the rotating shaft (202) to rotate and a fixed disc (204) fixedly connected with the rotating shaft (202); the rotating shaft (202) is arranged in parallel with the end surface normal line of the pressure plate (201);

the fixed disc (204) is fixedly provided with a linear driving mechanism (205), and the pressure disc (201) is connected with one end of the fixed disc (204) in a sliding way and is driven by the linear driving mechanism (205) to move along a straight line in a plane parallel to the end face of the pressure disc (201);

the cylinder guide support shaft (101) comprises a first hydraulic cylinder (107) fixed on a mounting seat (108), a conical cylinder (111) connected with a piston rod of the first hydraulic cylinder (107), a shaft cylinder (112) sleeved on the periphery of the piston rod of the first hydraulic cylinder (107) and fixed with the mounting seat (108), and a tensioning claw sleeved on the periphery of the conical cylinder (111) and fixed with the shaft cylinder (112), wherein a workpiece is suitable for being sleeved on the tensioning claw (113);

the diameter of the conical cylinder (111) gradually increases from one end close to the first hydraulic cylinder (107) to one end far away from the first hydraulic cylinder (107), and when the conical cylinder (111) stretches, the tensioning claw (113) is always attached to the outer surface of the conical cylinder (111).

2. The hydraulic bezel spin-flanging machine of claim 1, wherein: the clamping mechanism (1) further comprises a frame (104) which is suitable for a workpiece to pass through, and the backing plate is formed by splicing a left backing plate (102) and a right backing plate (103);

the left base plate (102) is fixed with the frame (104), the right base plate (103) is connected with the frame (104) through an opening and closing mechanism (105), and the opening and closing mechanism (105) drives the right base plate (103) to be close to or far away from the left base plate (102), so that arc-shaped side lines of the left base plate (102) and the right base plate (103) are spliced to form an elliptical opening (110).

3. The hydraulic bezel spin-flanging machine of claim 2, wherein: the opening and closing mechanism (105) is a push-pull cylinder fixed on the frame (104), and a piston rod of the push-pull cylinder is fixedly connected with the right backing plate (103).

4. The hydraulic bezel spin-flanging machine of claim 1, wherein: the end face of the fixed disc (204) is fixed with a first sliding rail (210), a sliding block (211) is slidably matched on the first sliding rail (210), the pressure plate (201) is rotationally connected with the sliding block (211), and the sliding block (211) is connected with the linear driving mechanism (205).

5. The hydraulic bezel spin-flanging machine of claim 1, wherein: the flanging mechanism (2) further comprises a box body (213), a box seat (212) and a base (214), and the rotating shaft (202) is rotatably connected in the box body (213);

the box body (213) is fixed on the box seat (212), and a vertical locking mechanism (215) is connected between the box seat (212) and the base (214) so as to vertically lock the box seat (212) and the base (214);

the box seat (212) is positioned on the base (214) and driven by the horizontal driving mechanism (216) to reciprocate on the base (214).

6. The hydraulic bezel spin-flanging machine of claim 1, wherein: one end of the backing plate, which faces the pressure plate (201), is provided with a convex edge (109) protruding out of the end face of the backing plate, and the convex edge (109) is arranged along the oval opening (110).

7. The hydraulic bezel spin-flanging machine of claim 5, wherein: one end of the rotating shaft (202) far away from the fixed disc (204) is connected with a rotary joint (217), a fixed support (218) is fixed on the box body (213), the outer ring of the rotary joint (217) is fixedly connected with the fixed support (218), the inner ring of the rotary joint (217) is fixedly connected with the rotating shaft (202), and the rotary joint (217) is connected with the linear driving mechanism (205) through an oil pipe (219).