Edge-covered graphite gasket production device and method

Abstract

The invention relates to the technical field of graphite gasket processing equipment, in particular to an edge-covered graphite gasket production device and method. Comprising a rotary table, a plurality of mounting rings are arranged on the periphery of the rotary table, a supporting table is rotatably mounted in each mounting ring, a base disc is vertically mounted on the side of the rotary table, a movable disc is vertically and slidably mounted at the lower end of the base disc, a first elastic part is arranged between the movable disc and the base disc, a pressing ring is rotatably mounted at the lower end of the movable disc, and an edge folding ring is vertically and slidably mounted on the movable disc; a flanging buckle is horizontally installed in the installation ring in a sliding mode, and a second elastic piece is arranged between the flanging buckle and the installation ring. The edge folding ring and the edge turning buckle alternately work, so that the metal ring is subjected to two-side bending to achieve edge covering, the whole process is synchronously completed along with lifting of the telescopic rod, and the edge covering efficiency is higher. The upper end face and the lower end face of the non-edge-covering part of the graphite gasket are pressed and buckled by the supporting table and the pressing ring respectively, and the graphite gasket is prevented from being damaged due to exposure. And the graphite gasket rotates in a non-independent manner, so that the possibility of abrasion caused by rotation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of graphite gasket processing equipment, in particular to a device for producing edge-wrapped graphite gaskets. Background Art

[0002] Graphite gaskets are cut or punched from pure graphite plates or metal (toothed plates, flat plates, mesh) reinforced graphite plates. In order to enhance the structural strength of the gasket and prevent edge damage that affects the sealing performance, the edges of the gasket are usually wrapped with metal or other materials. The edge wrapping of annular graphite gaskets is divided into: outer edge wrapping that only wraps the outer edge surface, inner edge wrapping that only wraps the inner circle surface, and full edge wrapping that wraps both the inner and outer circles.

[0003] When producing the outer-edge graphite gasket, the hemming machine is generally used: the hemming machine mainly includes two guide wheels and a driving roller. The two guide wheels are set at intervals, and the graphite gasket is embedded between the two guide wheels (one guide wheel is against the outer ring of the graphite gasket, and the other is against the inner ring of the graphite gasket), and the driving roller is pressed against the surface of the graphite gasket. The worker manually wraps the end of the metal belt on the edge of the graphite gasket, and drives the graphite gasket to rotate through the rotation of the driving roller. The worker guides the metal belt to fit the edge of the graphite gasket. As the graphite gasket rotates, the metal belt is rolled along the edge by the driving roller, so that it is wrapped on the edge of the graphite gasket. This process has a high rate of manual participation, not only low efficiency, but also unstable qualified rate of finished products. At the same time, the hemming by rolling with the driving roller is easy to produce marks on the surface of the graphite gasket, affecting the performance of the graphite gasket. Another method is to first place the metal ring on the end face of the circular groove, then place the graphite gasket on the metal ring, and then use mechanical stamping to buckle the metal ring and the graphite gasket into the circular groove, so that the metal ring is bent 90 degrees, and then the metal ring is pressed on the outer edge of the graphite gasket by a roller, thereby realizing the hemming operation of the graphite gasket. However, this method also has the problem of scratches and bruises during the mechanical stamping process.

[0004] Therefore, in order to reduce the influence of manual participation on the qualified rate of finished products and also reduce the probability of scratch damage on the surface of the graphite gasket, the present invention provides a production device for edge-wrapped graphite gaskets. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a production device for edge-wrapped graphite gaskets.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A device for producing edge-wrapped graphite gaskets comprises a turntable, wherein a plurality of semi-circular mounting rings are arranged around the turntable, a support for suspending graphite gaskets is rotatably mounted in each mounting ring, a base plate is vertically mounted on the upper side of the turntable driven by a lifting device, a movable plate is vertically slidably mounted at the lower end of the base plate, an elastic member 1 is arranged between the movable plate and the base plate, a pressure ring is rotatably mounted at the lower end of the movable plate, a folding ring is vertically slidably mounted on the movable plate, a flange buckle is horizontally slidably mounted in the mounting ring, an elastic member 2 is arranged between the flange buckle and the mounting ring, and a driving structure is arranged on the movable plate so that the folding ring first folds the edge by 90°, and then bends the folded edge again through the flange buckle.

[0007] Preferably, the driving structure includes a plurality of connecting rods rotatably installed at the lower end of the base plate, a connecting rod rotatably connected to a connecting rod 2 at a lower end of the connecting rod, a connecting rod 3 fixedly connected to a folding ring at a lower end of the connecting rod, and the connecting rod 3 vertically slides with the movable plate, and a sleeve fixed to the lower end of the base plate is provided on the connecting rod 3 close to the axis of the turntable, and the sleeve extends to the hinged position between the connecting rod 1 and the connecting rod 2 to limit the connecting rod 2, and a conical sleeve is provided on the outer wall of the sleeve, and the conical sleeve abuts against a crowbar rotatably installed on the movable plate, and the crowbar abuts against the flanging buckle.

[0008] Preferably, an extension rod is provided on the side of the flange buckle facing the turntable axis, the second elastic member is arranged between the extension rod and the mounting ring, the extension rod is provided with a socket penetrating up and down, and the lower end of the crowbar is inserted into the socket.

[0009] Preferably, a conical cylindrical positioning piece is provided at the lower end of the pressure ring, a conical groove matching with the positioning piece is provided on the support platform, and a friction layer is provided on the contact surface of the positioning piece and the support platform.

[0010] Preferably, a convex step is provided between the lower end of the pressure ring and the positioning member.

[0011] Preferably, the inner wall of the mounting ring is provided with a limit platform cooperating with the folding ring.

[0012] Preferably, a plurality of limit members cooperating with the graphite gaskets are vertically slidably mounted on the inner wall of the mounting ring, a horizontal lever is disposed at the upper end of the limit member, and an elastic member three is disposed between the lever and the mounting ring.

[0013] Preferably, the limiting members are arranged on both sides of the flange buckle, and the boss is provided with a notch that cooperates with the limiting members.

[0014] Preferably, it also includes two groups of spacing feeding mechanisms and a feeding mechanism for spacing graphite gaskets and metal rings respectively.

[0015] A method for producing an edge-wrapped graphite gasket, comprising: S1: stack graphite gaskets and metal rings one by one; S2: Mechanical stamping: S2-1: Press down and fix the graphite gasket and the metal ring; S2-2: The metal ring is punched and bent at 90°; S2-3: The metal ring is flanged by 90°; S3: Stamping reset; S4: Cutting materials.

[0016] Compared with the prior art, the present invention provides a device for producing edge-wrapped graphite gaskets, which has the following beneficial effects: 1. The present invention realizes hemming by alternately operating the hemming ring and the flanging buckle, so that the metal ring is bent on both sides. The whole process is completed synchronously with the lifting and lowering of the telescopic rod, so that the hemming efficiency is higher.

[0017] 2. In the present invention, the upper and lower end surfaces of the non-edged portion of the graphite gasket are respectively pressed by the support and the pressure ring, which reduces the possibility of damage to the graphite gasket due to exposure; and the graphite gasket does not rotate independently, thereby avoiding the possibility of wear due to rotation.

[0018] 3. The present invention precisely limits the size and positional relationship of the folding ring, flanging buckle, pressure ring, support platform, etc. The flanging is also performed by pressing the metal ring, which does not directly act on the graphite gasket, thereby reducing the probability of indentations and marks on the surface of the graphite gasket.

[0019] 4. The present invention has an integrated design of the secondary flanging structure, which is concentrated and occupies a small space.

[0020] 5. The present invention greatly reduces manual involvement and avoids the instability caused by manual operation.

[0021] 6. In the present invention, the placement of the graphite gasket and the metal ring does not affect the hemming process through the coordination of the turntable and the lifting device, so as to realize continuous production without stopping the machine and improve production efficiency.

[0022] Other advantages, objectives and features of the present invention will be described in part in the following description; and in part, will be apparent to those skilled in the art based on an examination of the following; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of the present invention Figure 1 .

[0024] Figure 2 A three-dimensional schematic diagram of the present invention Figure 2 .

[0025] Figure 3 It is a front cross-sectional schematic diagram of the present invention after the turntable drive is removed.

[0026] Figure 4 For the present invention Figure 3 Local schematic diagram of point A.

[0027] Figure 5 For the present invention Figure 4 Schematic diagram after removing view interference.

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of assembly on the base plate.

[0029] Figure 7 For the present invention Figure 5 Schematic diagram of a single mounting ring assembly.

[0030] Figure 8 It is a three-dimensional partial schematic diagram of the installation ring assembly of the present invention.

[0031] Fig. 9 It is a schematic diagram of the initial position relationship of the present invention.

[0032] Fig.10 It is a schematic diagram of the positional relationship between the metal ring and the graphite gasket when buckling the metal ring of the present invention.

[0033] Fig.11 For the present invention Fig.10 Partial schematic diagram of point B.

[0034] Fig.12 It is a schematic diagram of the positional relationship of the metal ring of the present invention when it is flanged at 90°.

[0035] Fig.13 For the present invention Fig.12 Partial schematic diagram at point C.

[0036] Fig.14 It is a schematic diagram of the positional relationship of the metal ring of the present invention after being folded again.

[0037] Fig.15 For the present invention Fig.14 Local schematic diagram at point D.

[0038] Fig.16 For the present invention Figure 7 Schematic diagram of another position relationship of the elastic member between the middle flange buckle and the mounting ring.

[0039] Fig.17 It is a bottom-up stereoscopic schematic diagram of the base installation of the present invention.

[0040] Fig.18 It is a schematic diagram of the structure of two types of material unloading mechanisms of the present invention.

[0041] Fig.19It is a schematic diagram of another structural state of the support platform and the pressure ring of the present invention.

[0042] In the figure: 1. turntable; 2. mounting ring; 3. support frame; 4. support platform; 5. pressure ring; 6. convex step; 7. graphite gasket; 8. metal ring; 9. telescopic rod; 10. base plate; 11. movable plate; 12. folding edge ring; 13. connecting rod one; 14. connecting rod two; 15. connecting rod three; 16. sleeve; 17. taper sleeve; 18. pry bar; 19. extension rod; 20. flanging buckle; 21. limit table; 22. limit member; 23. interval feeding mechanism; 24. unloading mechanism; 25. positioning member. DETAILED DESCRIPTION

[0043] The following will be combined with the attached embodiment of the present invention Figure 1-19 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Embodiment 1, in order to solve the problems existing in the prior art, this embodiment provides a device for producing edge-wrapped graphite gaskets, comprising: a turntable 1, a plurality of mounting rings 2 are arranged around the turntable 1, a support 4 for suspending a graphite gasket 7 is rotatably installed in each mounting ring 2, a base plate 10 is vertically installed on the upper side of the turntable 1 driven by a lifting device, a movable plate 11 is vertically slidably installed at the lower end of the base plate 10, an elastic member 1 is arranged between the movable plate 11 and the base plate 10, a pressure ring 5 is rotatably installed at the lower end of the movable plate 11, a folding ring 12 is vertically slidably installed on the movable plate 11, a flange buckle 20 is horizontally slidably installed in the mounting ring 2, an elastic member 2 is arranged between the flange buckle 20 and the mounting ring 2, and a driving structure is arranged on the movable plate 11 so that the folding ring 12 first folds the edge 90°, and then bends the folded edge again through the flange buckle 20.

[0045] Principle details of this embodiment: The turntable 1 is a metal truncated table with an anti-corrosion layer and a wear-resistant layer on the surface; the turntable 1 can be opened and closed at intervals by the drive of the motor 1, that is, it can rotate at intervals by a certain angle; the motor 1 is fastened and installed on the base (usually a metal table top in the workshop) by bolts.

[0046] The turntable 1 has a plurality of notches in a circular array around the turntable 1. The notches are semicircular at the outer edge of the turntable 1. A semicircular mounting ring 2 is provided at the notch. The upper and lower ends of the mounting ring 2 extend out of the upper and lower ends of the turntable 1. The bottom end of the turntable 1 is located on the side of each mounting ring 2 facing the axis of the turntable 1. An L-shaped support frame 3 is provided. The horizontal part of the support frame 3 extends from the lower end of the mounting ring 2 to the inside of the mounting ring 2. Motor 2 is fastened and installed on each support frame 3 by bolts. A support platform 4 is fixedly installed on the output shaft of motor 2. As a platform for placing graphite gasket 7, the support platform 4 is coaxially arranged with the mounting ring 2. The upper end of the support platform 4 is circular to match the circular appearance of the graphite gasket 7. The diameter of the support platform 4 is smaller than the outer diameter of the graphite gasket 7, and is adapted to the outer diameter of the exposed part of the graphite gasket 7 after being coated with metal, so as to prevent the metal ring 8 from being wrapped around the side of the support platform 4 during the edging. The metal ring 8 is a metal sheet, such as 201, 304, 316 stainless steel, aluminum and other materials, which has a certain flexibility and can be bent and deformed by a small force.

[0047] A bracket (not shown in the attached drawings) is provided on the side of the turntable 1, and the bracket is provided with a lifting device. The lifting device includes a telescopic rod 9 fastened and installed on the upper end of the bracket by bolts, and the telescopic rod 9 is located just above the axis of the mounting ring 2. The telescopic rod 9 is any one of a hydraulic rod, a pneumatic rod, and an electric telescopic rod. A base plate 10 is fixed to the extended end of the telescopic rod 9, and a plurality of guide holes are arranged in an annular array on the base plate 10, and a guide column is inserted into each guide hole. A movable plate 11 is connected to the lower ends of the plurality of guide columns, and the movable plate 11 is vertically slidably matched with the base plate 10 under the cooperation of the guide column and the guide hole. An elastic member 1 is provided between the movable plate 11 and the base plate 10, and the elastic member 1 is a plurality of springs 1 sleeved on the guide column, and the upper and lower ends of the spring 1 are respectively hooked and fixed to the lower end of the base plate 10 and the upper end of the movable plate 11, and the position of the movable plate 11 is limited by the spring pair, so that the movable plate 11 will not move relative to the base plate 10 when it is not subjected to force. Preferably, each guide column has an external thread on its upper end, and a nut is screwed onto the external thread. The nut is larger than the guide hole, and the nut is used to limit the movement and prevent the moving disk 11 from falling off the base disk 10 due to spring failure.

[0048] The movable disk 11 is rotatably mounted with a rotating shaft, which passes through the movable disk 11 (not shown in the attached figure). The lower end of the rotating shaft is connected with a pressing ring 5, so that the pressing ring 5 is rotatably mounted on the movable disk 11. The outer diameter of the pressing ring 5 is equal to the sum of the outer diameter of the graphite gasket 7 and the thickness of the metal ring 8, which can not only press and limit the metal ring 8, but also avoid interference with the vertical movement of the folding ring 12.

[0049] A full-ring folding ring 12 is vertically slidably mounted on the moving plate 11. The vertical sliding cooperation between the folding ring 12 and the moving plate 11 refers to the connection relationship between the moving plate 11 and the base plate 10. The inner diameter of the folding ring 12 is consistent with the outer wall of the pressure ring 5.

[0050] A through installation groove is provided at the upper end of the installation ring 2, and a flange buckle 20 is horizontally slidably installed in the installation groove. The flange buckle 20 is semi-circular, and the diameter of the flange buckle 20 is adapted to the diameter of the graphite gasket 7. An elastic member 2 is provided between the flange buckle 20 and the installation ring 2. The elastic member 2 is a spring 2. The two ends of the spring 2 are respectively hooked and fixed on the installation ring 2 and the flange buckle 20, and are used to pull the flange buckle 20 to reset.

[0051] According to the above technical solution: When in use, the turntable 1 rotates in a clockwise direction. The stacked graphite gaskets 7 and metal rings 8 are manually placed one by one on the support platform 4. When placing, the center of the support platform 4 is placed as much as possible to reduce the side deviation of the edge.

[0052] The placed graphite gasket 7 and metal ring 8 move to the bottom of the telescopic rod 9, and the telescopic rod 9 extends, causing the base plate 10 to descend. The base plate 10 descends with the movable plate 11 until the movable plate 11 buckles against the upper end surface of the mounting ring 2. At this time, the movable plate 11 will not continue to descend, and the pressure ring 5 on the movable plate 11 presses against the upper surface of the metal ring 8, while the metal ring 8 and the graphite gasket 7 are stacked and placed on the support 4, so that the metal ring 8 and the graphite gasket 7 are buckled and limited by the cooperation of the pressure ring 5 and the support 4. The movable plate 11 is supported by the upper end surface of the mounting ring 2, thereby preventing it from continuing to descend, and the pressure applied to the metal ring 8 and the graphite gasket 7 increases, resulting in indentations and marks.

[0053] When the base plate 10 continues to descend, the moving plate 11 is pushed up by the mounting ring 2 and stops descending, while the folding ring 12 is driven by the driving structure and continues to descend with the base plate 10. The folding ring 12 will press against the metal ring 8 and bend along the outer edge of the graphite gasket 7, thereby achieving a 90° bend of the metal ring 8 and completing the first step of the hemming.

[0054] When the base plate 10 continues to descend, the folding ring 12 stops moving after completing the 90° flanging, and then the flanging buckle 20 is driven by the driving structure to move toward the metal ring 8. The stop position of the folding ring 12 is such that: the lower end surface of the folding ring 12 does not exceed the upper end surface of the graphite gasket 7 downward, avoiding interference with the movement of the flanging buckle 20. The flanging buckle 20 moves toward the metal ring 8, and bends again against the side of the metal ring 8, so that the metal ring 8 at this point is buckled on the lower end surface of the graphite gasket 7. Then the motor 2 is started, and the motor 2 drives the support 4 to rotate, and the support 4 rotates synchronously with the graphite gasket 7 and the pressure ring 5, and the metal ring 8 passes through the flanging buckle 20 for multiple full circles, so that the metal ring 8 is completely pressed on the graphite gasket 7 to achieve complete coverage of the metal gasket.

[0055] After the coating is completed, the motor 2 is turned off, the telescopic rod 9 retracts, the base plate 10 rises with the movable plate 11, and the flange buckle 20, the folding ring 12, and the movable plate 11 are reset; the turntable 1 continues to rotate, driving the graphite gasket 7 that has completed the hemming to transfer to the hemming position, and then it can be removed, and after polishing and other processes, it can be stored after passing the quality inspection.

[0056] According to the above scheme, the folding ring 12 and the flanging buckle 20 are operated alternately, so that the metal ring 8 is bent on both sides to achieve the edging. The whole process is completed synchronously with the lifting and lowering of the telescopic rod 9, which makes the edging efficiency faster. The upper and lower end surfaces of the non-edging part of the graphite gasket 7 are respectively pressed by the support 4 and the pressure ring 5, which reduces the possibility of damage to the graphite gasket 7 due to exposure; and in this scheme, the graphite gasket 7 does not rotate independently, thereby avoiding the possibility of wear due to rotation. This scheme accurately limits the size and position relationship of the folding ring 12, the flanging buckle 20, the pressure ring 5, the support 4, etc., and the flanging is also performed by pressing the metal ring 8, and does not directly act on the graphite gasket 7, thereby reducing the probability of indentations and marks on the surface of the graphite gasket 7.

[0057] In this embodiment, a rubber ring can also be provided on the upper end surface of the support 4, and the rubber ring can be used to enhance the elastic squeezing force on the graphite gasket 7, thereby avoiding the generation of indentations as much as possible, and enhancing the tightness of the connection between the graphite gasket 7 and the support 4 and the pressure ring 5, so that the motor 2 can drive the graphite gasket 7 to rotate synchronously with the support 4 and the pressure ring 5.

[0058] In this embodiment, a driving structure is provided to realize the vertical movement of the hemming ring 12 and the horizontal movement of the hemming buckle 20 in the above solution. The driving structure includes a plurality of connecting rods 13 rotatably mounted on the lower end surface of the base plate 10, and the plurality of connecting rods 13 are arranged in a circular array on the lower end surface of the base plate 10; and the connecting rods 13 are arranged at intervals from the guide column, with a certain spacing to avoid movement interference. The lower end of each connecting rod 13 is rotatably connected to a connecting rod 2 14, and the lower end of the connecting rod 2 14 is rotatably connected to a connecting rod 3 15, and the lower end of the connecting rod 3 15 is fixedly connected to the hemming ring 12, and the mobile disk 11 is provided with a through hole for the connecting rod 3 15 to pass through, and the cooperation between the through hole and the connecting rod 3 15 enables the connecting rod 3 15 to vertically slide with the mobile disk 11, and then enables the hemming ring 12 to vertically slide with respect to the mobile disk 11.

[0059] A sleeve 16 is sleeved on the connecting rod 3 15 near the axis of the turntable 1, and a plurality of mounting rods are arranged in a circular array on the upper end of the sleeve 16, and the upper ends of the mounting rods are fixed on the base plate 10, so that the sleeve 16 is fixedly connected to the base plate 10, and the sleeve 16 moves with the movement of the base plate 10. The sleeve 16 has a certain depth, which satisfies: when the lower end of the sleeve 16 is located at the intersection of the connecting rod 3 15 and the connecting rod 2 14, the upper end of the sleeve 16 is located at the intersection of the connecting rod 2 14 and the connecting rod 1 13.

[0060] The upper end surface of the mounting ring 2 is provided with an open groove along the radial direction, and an extension rod 19 is horizontally slidably installed in the open groove. An elastic member 2 is fixed to one end of the extension rod 19 facing the axis of the turntable 1, and the other end of the elastic member 2 is fixed to the end of the open groove facing the axis of the turntable 1; when the elastic member 2 is a spring 2, it can be located above or below the extension rod 19, or can be sleeved on the extension rod 19. The end of the extension rod 19 facing away from the axis of the turntable 1 is fixedly connected to the flange buckle 20, and is limited by the pulling of the elastic member 2. A mounting groove is provided on the moving plate 11 just above the extension rod 19, and a crowbar 18 is rotatably installed in the mounting groove. A coil spring is provided between the crowbar 18 and the rotating part of the mounting groove. Under the restriction of the coil spring, the lower end of the crowbar 18 tends to tilt toward one side of the axis of the turntable 1; a cone sleeve 17 is fixed to the side wall of the sleeve 16. A plug hole is provided on the extension rod 19 that runs through from top to bottom, and the lower end of the crowbar 18 is inserted into the plug hole. The length of the upper portion of the crowbar 18 located at the rotation axis is shorter than the length of the lower portion of the rotation axis, thereby realizing a drive range extension design.

[0061] The inner wall of the mounting ring 2 is provided with a limiting platform 21 matched with the folding ring 12 , the limiting platform 21 is horizontally aligned with the metal ring 8 , and the upper end of the folding ring 12 is provided with an outer eaves platform.

[0062] According to the above technical solution: When in use, under the action of the elastic member 1, the positions of the movable disk 11 and the base disk 10 remain unchanged, and the upper and lower ends of the sleeve 16 are respectively sleeved on the intersection of the connecting rod 3 15 and the connecting rod 2 14, and the intersection of the connecting rod 2 14 and the connecting rod 1 13, thereby restricting the connecting rod 2 14, so that the connecting rod 1 13, the connecting rod 2 14, and the connecting rod 3 15 remain in a vertical state without deflection.

[0063] The base plate 10 is driven by the telescopic rod 9 to descend, and the movable plate 11 is lowered accordingly, while the hemming ring 12 is pressed down synchronously by the connecting rod 1 13, the connecting rod 2 14, and the connecting rod 3 15. When the movable plate 11 abuts against the upper end surface of the mounting ring 2 and stops moving downward, but as the base plate 10 continues to descend, the movable plate 11 does not move; and the hemming ring 12 presses down the metal ring 8 as the base plate 10 continues to descend, realizing the first flanging of the metal ring 8. Until the outer edge platform of the hemming ring 12 abuts against the limit platform 21, the hemming ring 12 is braked by the top and no longer descends; at the same time, the sleeve 16 descends as the base plate 10 descends, until the sleeve 16 is separated from the junction of the connecting rod 2 14 and the connecting rod 1 13, at which time the upper end of the connecting rod 2 14 and the lower end of the connecting rod 1 13 lose the limit, and the connecting rod 1 13 and the connecting rod 2 14 deflect relative to the connecting rod 3 15, thereby no longer giving the hemming ring 12 downward pressing power.

[0064] As the base plate 10 continues to descend, the sleeve 16 continues to descend, and the upper end of the pry bar 18 contacts the outer wall of the cone sleeve 17. As the base plate 10 moves downward, the cone sleeve 17 deflects against the pry bar 18, and the pry bar 18 pushes against the extension rod 19 to drive the flange buckle 20 to move toward the metal ring 8, thereby completing the partial flanging of the second flanging. Then, as the motor 2 rotates, the entire hemming operation is completed.

[0065] After the hemming is completed, the base plate 10 rises with the retraction of the telescopic rod 9, the cone sleeve 17 rises, and the crowbar 18 is reset under the action of the coil spring and the elastic member 2 pulling the extension rod 19. During the rising process of the sleeve 16, it will press against the side wall of the connecting rod 2 14, so that the connecting rod 2 14 tends to be vertical from the side, until it is again sleeved on the hinged part of the connecting rod 2 14 and the connecting rod 1 13. Finally, the components on the base plate 10 are separated from the graphite gasket 7 as the base plate 10 rises.

[0066] In this embodiment, in order to improve the stability of the rotation transmission between the support 4 and the pressure ring 5, the lower end of the pressure ring 5 is provided with a conical cylindrical positioning piece 25, and the support 4 is provided with a conical groove that cooperates with the positioning piece 25. The self-positioning of the graphite gasket 7 can be achieved by the cooperation of the conical cylindrical positioning piece 25 and the conical groove, thereby reducing the required accuracy and difficulty of the placement of the graphite gasket 7, improving the placement efficiency, and then improving the production efficiency; at the same time, the support 4 is in direct contact with the pressure ring 5, so that the rotation driving force of the support 4 is directly transmitted to the pressure ring 5, reducing the mechanical damage of the graphite gasket 7 when transmitting torque. The contact surface of the positioning piece 25 and the support 4 is provided with a friction layer to improve the contact offset resistance, thereby improving the stability of driving the turntable 1 to drive the pressure ring 5 to rotate synchronously.

[0067] The limiting platform 21 corresponds to the metal part. When the metal ring 8 is placed, the metal ring 8 is against the inner circle of the limiting platform 21 to facilitate the centering and positioning of the supporting platform 4.

[0068] Preferably, a convex step 6 is provided between the lower end of the pressing ring 5 and the positioning member 25, and the height of the convex step 6 matches the thickness of the metal ring 8, thereby increasing the contact surface between the pressing ring 5 and the upper end of the metal gasket, so that the pressure is dispersed, which not only makes the buckling more stable, but also can further reduce the probability of indentation.

[0069] In this embodiment, in order to make the graphite gasket 7 correspond more accurately to the axis of the support platform 4 when it is placed, a plurality of limiters 22 cooperating with the graphite gasket 7 are vertically slidably installed on the inner wall of the mounting ring 2, and a support ring is provided at the lower end of the limiter 22, and a horizontal lever is provided at the upper end of the limiter 22. An elastic member 3 is provided between the lever and the mounting ring 2, and the elastic member 3 is a plurality of springs 2 arranged around the mounting ring 2, and a semi-annular connecting plate is commonly connected to the upper ends of the plurality of springs 2; or the elastic member 2 is a semi-annular rubber ring.

[0070] When not subjected to external force, the elastic member 3 normally expands and contracts and extends to the upper end surface of the mounting ring 2, the position of the limiter 22 is the highest, and the support ring corresponds to the upper end surface of the support platform 4. When the graphite gasket 7 is placed, the graphite gasket 7 is against the side wall of the support ring, thereby positioning the graphite gasket 7. When the moving plate 11 descends, the moving plate 11 is against the elastic member 3, and the elastic member 3 is compressed as the moving plate 11 descends. The limiter 22 descends and is misaligned with the graphite gasket 7, thereby avoiding interference caused by the folding ring 12 pressing down the metal ring 8.

[0071] Preferably, the limiting member 22 is arranged on both sides of the flange buckle 20, so as to be offset from the flange buckle 20 and move without interfering with each other; and a notch is provided on the limiting platform 21 to cooperate with the limiting member 22, leaving a channel for the limiting member 22 to move up and down, and a guide plate is used to limit the limiting member 22's movement up and down.

[0072] In this embodiment, the metal ring 8 of the upper layer of the graphite gasket 7 is compressed by the pressure ring 5, and the compression is relatively tight, while the lower layer is flanging for the second time by the rotation of the flange buckle 20 and the support 4, and the tightness of the lower layer is poor. Therefore, a pressing mechanism is additionally provided to assist the flange buckle 20 in the secondary flanging pressing. The pressing mechanism includes a second telescopic rod, which is fixed on the support frame 3, and the second telescopic rod is symmetrically arranged with the flange buckle 20. A pressure roller is rotatably installed on the extended end of the second telescopic rod. In this way, after the flange buckle 20 presses against the metal ring 8 for flanging, and the support 4 rotates for more than one circle, the second telescopic rod extends, and the pressure roller presses against the metal ring 8 and buckles against the bending part of the lower end of the graphite gasket 7, thereby rolling, so that the tightness of the lower layer is improved.

[0073] Preferably, in this solution, a turntable 1 can be equipped with multiple lifting devices and edging structures. The turntable 1 rotates so that multiple graphite gaskets 7 and metal rings 8 are transferred to the bottom of the base plates 10 corresponding to the multiple lifting devices, so that multi-station edging operations can be performed and production efficiency can be improved.

[0074] The complete implementation process of this program: When in use, the turntable 1 rotates in a clockwise direction. The stacked graphite gaskets 7 and metal rings 8 are manually placed one by one on the support platform 4. When placing, the metal rings 8 and graphite gaskets 7 are positioned and limited by the limit platform 21 and the limit member 22, respectively, so as to facilitate the positioning with the axis of the support platform 4.

[0075] The base plate 10 descends with the movable plate 11 until the movable plate 11 buckles against the upper end surface of the mounting ring 2. The pressing ring 5 on the movable plate 11 presses against the upper surface of the metal ring 8, and the metal ring 8 and the graphite gasket 7 are stacked on the support 4, so that the metal ring 8 and the graphite gasket 7 are buckled and limited by the cooperation of the pressing ring 5 and the support 4.

[0076] The base plate 10 continues to descend, and the movable plate 11 is held up by the upper end surface of the mounting ring 2 and cannot continue to descend; the folding ring 12 continues to descend with the base plate 10 and presses down the metal ring 8 to achieve the first flanging of the metal ring 8. Until the outer edge platform of the folding ring 12 abuts against the limit platform 21, the folding ring 12 is braked by the upper top and no longer descends; at the same time, the sleeve 16 descends with the descent of the base plate 10 until the sleeve 16 is separated from the junction of the second connecting rod 14 and the first connecting rod 13, at which time the upper end of the second connecting rod 14 and the lower end of the first connecting rod 13 lose their limit, and the first connecting rod 13 and the second connecting rod 14 deflect relative to the third connecting rod 15, so that the folding ring 12 is no longer pressed down.

[0077] As the base plate 10 continues to descend, the sleeve 16 continues to descend, and the upper end of the pry bar 18 contacts the outer wall of the cone sleeve 17. As the base plate 10 moves downward, the cone sleeve 17 deflects against the pry bar 18, and the pry bar 18 pushes against the extension rod 19 to drive the flange buckle 20 to move toward the metal ring 8, thereby completing the partial flanging of the second flanging. Then, as the motor 2 rotates, the entire hemming operation is completed.

[0078] After the coating is completed, the motor 2 is turned off, the telescopic rod 9 retracts, the base plate 10 rises with the movable plate 11, and the flange buckle 20, the folding ring 12, and the movable plate 11 are reset; the turntable 1 continues to rotate, driving the graphite gasket 7 that has completed the hemming to transfer to the hemming position, and then it can be removed, and after polishing and other processes, it can be stored after passing the quality inspection.

[0079] Embodiment 2, in a further embodiment of the present scheme, in order to improve the degree of automation of the present equipment, it also includes two groups of spacing feeding mechanisms 24 and a feeding mechanism 24 for spacing the graphite gaskets 7 and the metal rings 8 respectively.

[0080] The two groups of interval unloading mechanisms 24 have the same structure: both include a material table, a circular groove is provided on the material table, a groove wheel is rotatably installed in the circular groove, and the groove wheel is driven by a motor 3 fixed at the lower end of the material table (not shown in the attached figure). The grooves on the outer edge of the groove wheel in the two groups of interval unloading mechanisms 24 are respectively consistent with the size of the graphite gasket 7 and the metal ring 8, and the thickness of the groove wheel is respectively consistent with the thickness of the graphite gasket 7 and the metal ring 8. The material table is tilted, and a track is provided on the side of the material table for the graphite gasket 7 or the metal ring 8 to slide down, and the outlet at the lower end of the track is directly opposite to the end face of the support platform 4. A barrel is suspended on the material table, and the barrel is used to stack graphite gaskets 7 or metal rings 8. The upper and lower ends of the barrel are open, and the lower end of the barrel is flush with the end face of the groove wheel.

[0081] When in use, the graphite gasket 7 in one barrel falls onto the slide rail as the motor 3 rotates, driven by the groove wheel interval, and finally falls onto the support platform 4; while the metal ring 8 in the other barrel falls onto the slide rail as the motor 3 rotates, driven by the groove wheel interval, and finally falls onto the graphite gasket 7. In this way, the stacking of the graphite gasket 7 and the metal ring 8 on the support platform 4 can be completed autonomously, further reducing the instability caused by manual participation; and the degree of automation is high, and the production efficiency is further improved.

[0082] Preferably, the arrangement of the groove wheel and the material platform can be modified, such as the material platform is provided with a discharge port corresponding to the graphite gasket 7 or the metal ring 8 in the circular groove, the discharge port is symmetrically arranged with the material barrel, the material platform is suspended above the turntable 1, and the discharge port corresponds to the mounting ring 2. In this way, as the groove wheel rotates, the graphite gasket 7 or the metal ring 8 will fall from the discharge port by itself, and the placement position is more accurate compared to the sliding of the slide rail.

[0083] The unloading mechanism 24 includes an unloading platform arranged at the side of the turntable 1, on which a nylon brush is rotatably mounted, the nylon brush being located just above the mounting ring 2, and driven by a motor 4 fixed on the unloading platform (not shown in the drawings). As the nylon brush rotates, the edge-wrapped graphite gasket 7 on the support platform 4 is pushed onto the unloading platform to realize the unloading operation.

[0084] Embodiment 3, in a further embodiment of this solution, in embodiment 1, the placement of the graphite gasket 7 is limited by the limiting member 22. If the elastic force of the elastic member 3 is too large, the position state requirements of the moving plate 11 and the base plate 10 will be affected; if the elastic force of the elastic member 3 is small, the elastic member 3 will fail to function after long-term use. Therefore, in this embodiment, this can be modified: The mechanism of the support platform 4 is redesigned, and a conical cylindrical positioning member 25 is arranged on the support platform 4, and a conical groove is arranged on the pressure ring 5. When the graphite gasket 7 is placed in this way, the graphite gasket 7 is sleeved on the positioning member 25, and self-positioning can be achieved.

[0085] The material removal structures described in this embodiment and in embodiment 2 are not used simultaneously.

[0086] Embodiment 4, a method for producing a hemmed graphite gasket 7, comprising: S1: stacking graphite gaskets 7 and metal rings 8 one by one; S2: Mechanical stamping: S2-1: Pressing down and fixing the graphite gasket 7 and the metal ring 8; S2-2: The metal ring 8 is punched and bent by 90°; S2-3: The metal ring 8 is flanging and then flanging by 90°; S3: Stamping reset; S4: Cutting materials.

[0087] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A device for producing edge-wrapped graphite gaskets, characterized in that: The invention comprises a turntable (1), wherein a plurality of semi-circular mounting rings (2) are arranged around the turntable (1), and a support platform (4) for suspending a graphite gasket (7) is rotatably mounted in each mounting ring (2). A base plate (10) is vertically mounted on the upper side of the turntable (1) driven by a lifting device, and a movable plate (11) is vertically slidably mounted on the lower end of the base plate (10), and an elastic member 1 is arranged between the movable plate (11) and the base plate (10). A pressure ring (5) is rotatably mounted on the lower end of the movable plate (11), and a folding ring (12) is vertically slidably mounted on the movable plate (11), and a flange buckle (20) is horizontally slidably mounted in the mounting ring (2), and an elastic member 2 is arranged between the flange buckle (20) and the mounting ring (2). A driving structure is arranged on the movable plate (11) so that the folding ring (12) first folds the edge by 90 degrees, and then bends the folded edge again through the flange buckle (20).

2. The device for producing edge-wrapped graphite gaskets according to claim 1, characterized in that: The driving structure comprises a plurality of connecting rods (13) rotatably mounted on the lower end of the base plate (10); the lower end of the connecting rod (13) is rotatably connected to the connecting rod (14); the lower end of the connecting rod (14) is rotatably connected to the connecting rod (15) fixedly connected to the folding ring (12); the connecting rod (15) and the movable plate (11) are vertically slidably matched; the connecting rod (15) close to the axis of the turntable (1) is sleeved with a sleeve (16) fixed to the lower end of the base plate (10); the sleeve (16) extends to the hinged portion between the connecting rod (13) and the connecting rod (14) to limit the connecting rod (14); a cone sleeve (17) is provided on the outer wall of the sleeve (16); the cone sleeve (17) is abutted against a crowbar (18) rotatably mounted on the movable plate (11); the crowbar (18) abuts against the flanging buckle (20).

3. The device for producing edge-wrapped graphite gaskets according to claim 2, characterized in that: An extension rod (19) is provided on the side of the flange buckle (20) facing the axis of the turntable (1), and the second elastic member is arranged between the extension rod (19) and the mounting ring (2). The extension rod (19) is provided with an insertion hole extending vertically, and the lower end of the crowbar (18) is inserted into the insertion hole.

4. The device for producing edge-wrapped graphite gaskets according to claim 1, characterized in that: A conical cylindrical positioning piece (25) is provided at the lower end of the pressure ring (5), the support platform (4) is provided with a conical groove that matches the positioning piece (25), and the contact surfaces of the positioning piece (25) and the support platform (4) are both provided with a friction layer.

5. The device for producing edge-wrapped graphite gaskets according to claim 4, characterized in that: A convex step (6) is provided between the lower end of the pressure ring (5) and the positioning member (25).

6. The device for producing edge-wrapped graphite gaskets according to claim 2, characterized in that: The inner wall of the mounting ring (2) is provided with a limiting platform (21) that cooperates with the folding ring (12).

7. The device for producing edge-wrapped graphite gaskets according to claim 6, characterized in that: A plurality of limit members (22) cooperating with the graphite gasket (7) are vertically slidably mounted on the inner wall of the mounting ring (2), a horizontal lever is provided at the upper end of the limit member (22), and an elastic member three is provided between the lever and the mounting ring (2).

8. The device for producing edge-wrapped graphite gaskets according to claim 7, characterized in that: The limiting members (22) are arranged on both sides of the flange buckle (20), and the boss is provided with a notch that cooperates with the limiting members (22).

9. The device for producing edge-wrapped graphite gaskets according to claim 1, characterized in that: It also includes two groups of spacing feeding mechanisms (24) for respectively placing the graphite gasket (7) and the metal ring (8) at intervals, and a feeding mechanism (24).

10. A method for producing a hemmed graphite gasket, characterized in that: include: S1: stacking graphite gaskets (7) and metal rings (8) one by one; S2: Mechanical stamping: S2-1: Pressing down and fixing the graphite gasket (7) and the metal ring (8); S2-2: The metal ring (8) is bent by 90° by punching; S2-3: The metal ring (8) is flanged and then flanged 90°; S3: Stamping reset; S4: Cutting materials.

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