A sealing gasket production mold for water hydrogen production

Abstract

The present invention discloses a production mold for sealing gaskets for hydrogen production from water, and relates to the technical field of sealing gasket production equipment. The production mold for sealing gaskets for hydrogen production from water includes a press base and a pressing mold, wherein the pressing mold is located on the press base, and the pressing mold includes an outer mold body, a bottom mold arranged below the inner wall of the outer mold body, and an inner mold body located in the outer mold body, wherein the outer wall of the inner mold body, the inner wall of the outer mold body, and the upper surface of the bottom mold form a mold cavity, and a middle and lower mold are arranged above the mold cavity, wherein the outer diameter of the middle and lower mold is greater than the outer diameter of the outer mold body, and the present invention can automatically separate the middle and lower molds and the inner mold body from the sealing gasket during the rotation of the lifting rod, and the outer mold body and the bottom mold rotate to eliminate the stress between the sealing gasket and the sealing gasket, thereby achieving automatic demoulding while ensuring that the sealing gasket is intact.

Description

Technical Field

[0001] The invention relates to the technical field of sealing gasket production equipment, in particular to a sealing gasket production mould for water-to-hydrogen production. Background Art

[0002] At present, compression molding is mostly used in the production process of water-to-hydrogen sealing gaskets. The principle of compression molding is to pour powder containing polytetrafluoroethylene and additives into the mold, flatten the raw materials, and form the gasket by pressing the mold. The mold generally includes an outer mold, an inner mold, a middle and lower mold, and a middle and upper mold. During production, the inner mold and the outer mold are fixed on the press. In order to ensure the convenience and uniformity of laying the material, the middle and lower molds need to be lifted to a certain position to facilitate the flattening of the raw materials. At the same time, the product after compression molding also needs to be taken by lifting the mold to a flat surface.

[0003] The existing mold lifting method is to drill four holes under the press, install a lifting table under the press, and have four lifting columns on the table, which are controlled by a cylinder. When the cylinder is working, the lifting column is raised, and the lifting column contacts the middle and lower molds to lift the mold. When the cylinder is used for lifting, the accuracy cannot be controlled, and the height distance of the lifted mold cannot be controlled. It needs to be manually measured and adjusted multiple times, which is inefficient.

[0004] In addition, during demolding, the operator needs to manually demold, but there is a certain stress between the sealing gasket formed by pressing and the inner wall of the mold cavity, which makes demolding difficult. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a production mold for a sealing gasket for hydrogen production from water, which solves the problems of low lifting accuracy of the middle and lower molds and laborious demoulding in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a production mold for sealing gaskets for water-to-hydrogen production, including a press base, and also including: a pressing mold, the pressing mold is located on the press base, the pressing mold includes an outer mold body, a bottom mold arranged below the inner wall of the outer mold body, and an inner mold body located in the outer mold body, the outer wall of the inner mold body, the inner wall of the outer mold body and the upper surface of the bottom mold form a mold cavity, and a middle and lower mold is arranged above the mold cavity, and the outer diameter of the middle and lower mold is larger than the outer diameter of the outer mold body; a lifting rod, the lifting rod is rotatably installed on the press base, and the lifting rod is located on the outside of the pressing mold, the upper end of the lifting rod is provided with an upper threaded portion, and the upper threaded portion is threadedly connected with a lifting nut 1, and the lifting rod can actively rotate so that the lifting nut 1 moves upward along the axial direction of the lifting rod to lift the middle and lower molds upward to form a middle and lower mold. The state of the mold being separated from the mold cavity; an L-shaped rod, the L-shaped rod is fixedly arranged on the lower surface of the outer mold body, and the L-shaped rod is inserted into the inside of the press base; a rotation drive assembly, the upper surface of the press base is provided with a limiting circular groove, the outer mold body is located in the limiting circular groove, the rotation drive assembly is located in the press base, and is used to push the L-shaped rod so that the outer mold body can be limited to rotate in the circular groove; a rotation movement assembly, the rotation movement assembly includes a rotating structure and a moving structure, the rotating structure is located between the inner mold body and the L-shaped rod, and is used to transmit the rotation force of the outer mold body to the inner mold body, and make the rotation direction of the outer mold body and the inner mold body opposite, so that the outer mold body, the bottom mold and the inner mold body can be circumferentially separated from the sealing gasket, the moving structure is located below the press base, and is used to enable the rotating inner mold body to move downward, so that the inner mold body can be axially separated from the sealing gasket.

[0007] Furthermore, the rotating structure includes: an outer mold shaft, which is fixed to the end of the L-shaped rod away from the bottom mold, and the outer mold shaft is located in the axial direction of the outer mold body, and an active umbrella wheel is fixedly provided at the end of the outer mold shaft close to the outer mold body; an inner mold shaft, the upper end of the inner mold shaft is fixedly provided at the center of the circle of the lower surface of the inner mold body, and the lower end of the inner mold shaft passes through the active umbrella wheel and the outer mold shaft, and the inner mold shaft and the active umbrella wheel are gap-matched; a positioning cylinder, the positioning cylinder is sleeved on the upper end of the inner mold shaft, and the positioning cylinder is limited to a state that can only rotate by a second limit seat, and the positioning cylinder can synchronously drive the inner mold shaft to rotate when it rotates, and a driven umbrella wheel is fixedly provided on the outside of the positioning cylinder; a transmission umbrella wheel, the transmission umbrella wheel is meshed between the driven umbrella wheel and the active umbrella wheel, so that the rotational force of the active umbrella wheel is transmitted to the driven umbrella wheel through the transmission umbrella wheel, and the driven umbrella wheel rotates in the opposite direction to the active umbrella wheel; the inner mold shaft can slide along the axial direction of the positioning cylinder to compensate for the axial displacement of the inner mold body driven by the moving structure.

[0008] Furthermore, a cavity seat is fixedly provided in the middle of the lower inner surface of the press base; the movable structure includes: a follower ring, which is fixed to the lower end of the inner mold shaft through spokes and can rotate with the inner mold shaft, and the follower ring is located in the cavity seat; a spiral groove 1, which is arranged on the outer surface of the follower ring; a force slider 1, one end of which is fixed to the inner wall of the fixed surrounding ring, and the other end is inserted into the spiral groove 1, and the lower end of the fixed surrounding ring is fixed to the bottom surface of the press base. When the follower ring rotates, it can generate axial displacement through the guiding action of the spiral groove 1 and the force slider 1, so as to drive the inner mold body to generate axial displacement.

[0009] Furthermore, the lower section of the lifting rod is provided with a lower threaded portion, and the lower threaded portion is threadedly connected with a lifting nut 2, and the lifting nut 2 can move along the axial direction of the lifting rod; the rotation driving assembly comprises: a moving column, the moving column is located outside the lifting rod and is located at the upper end of the lower threaded portion, the moving column and the lifting rod are clearance-matched, and a reserved length is provided between the moving column and the lifting nut 2; a rotating cylinder, the rotating cylinder is located at the periphery of the moving column, and a limit seat 1 is provided at the periphery of the rotating cylinder, and the limit seat 1 is fixed by a bending frame to limit the limit seat 1 to be stationary, and the rotating cylinder is limited to be able to rotate in the limit seat 1; a force sliding block 2, the force sliding block 2 is fixed on one side of the outer surface of the moving column, and the inner wall of the rotating cylinder is provided with a spiral groove 2 adapted to the force sliding block 2, and the lifting When nut 2 passes the reserved length and moves to the lower end of the moving column, it can push the moving column upward and make the force-applying slider 2 move along the spiral groove 2, forming a state in which the rotating cylinder rotates; a limiting ring is fixed at the lower end of the moving column, and a limiting groove is provided on the lower surface of the limiting ring, and a limiting protrusion adapted to the limiting groove is provided on the upper surface of the lifting nut 2 to limit the circumferential rotation of the moving column; a fan-shaped gear, the fan-shaped gear is fixed on the side of the rotating cylinder close to the L-shaped rod, and a fan-shaped gear ring is assembled on the side of the L-shaped rod close to the fan gear through a connecting rod, and the center of the fan-shaped gear ring coincides axially with the center of the bottom mold, so that when the fan gear rotates, the fan-shaped gear ring pushes the outer mold body and the bottom mold to rotate; the rotation angle of the outer mold body is 3°-5°.

[0010] Furthermore, a lifting ring is provided between the two lifting nuts, and the lifting ring rises and falls synchronously with the lifting nut two; it also includes an inner mold support seat for providing supporting force to the inner mold main body, and the inner mold support seat includes: a support block, the support block is located below the inner mold main body, the support block is supported on the upper surface of the cavity seat by a column, and there is a spacing space between two adjacent support blocks; a cushion block, the cushion block is located on the upper surface of the support block, and the support block is supported on the cushion block when the support block presses the sealing ring; a pull rod, the pull rod is fixed on the cushion block; a push rod, an articulated seat is provided in the area on the upper surface of the lifting ring opposite to the pull rod, one end of the push rod is rotatably mounted on the articulated seat, and the other end of the push rod is rotatably connected to the pull rod, so that when the lifting ring pushes the push rod upward, the upper end of the push rod can pull the pull rod, forming a state in which the cushion block radially separates from the support block, so that the inner mold main body has space to descend with the moving structure during the demolding stage.

[0011] Furthermore, the position of the spacing space is opposite to the L-shaped rod, and the width of the spacing space is greater than the displacement of the L-shaped rod when the bottom mold rotates.

[0012] Furthermore, the thickness of the cushion block is greater than a maximum threshold value of the inner mold body descending.

[0013] Furthermore, a groove cavity for accommodating the cushion block is provided in an area on the upper side plate of the press base opposite to the cushion block; and a guide cavity is provided in a position on the upper side plate of the press base opposite to the pull rod.

[0014] Furthermore, a compensation cavity is provided in the area on the upper side plate of the press base opposite to the L-shaped rod to compensate for the rotation amount of the L-shaped rod.

[0015] Furthermore, a large gear ring is rotatably installed at the lower part of the press base; a small gear is fixed to the lower end of the lifting rod, and the small gear is meshed with the inner wall of the large gear ring; a servo motor for driving one of the small gears to rotate is installed at the bottom of the press base; a fixed ring is provided on the periphery of the large gear ring through a bearing.

[0016] The present invention has the following beneficial effects:

[0017] (1) The production mold of the sealing gasket for water-to-hydrogen production can automatically separate the middle and lower molds and the inner mold body from the sealing gasket during the rotation of the lifting rod, and the outer mold body and the bottom mold rotate to eliminate the stress between the outer mold body and the sealing gasket. The outer mold body and the bottom mold rotate in a circumferential direction, while the inner mold body is demolded in the circumferential direction and axial direction, which can avoid damage to the sealing gasket caused by excessive axial shear force on the sealing gasket, and realize automatic demolding while ensuring that the sealing gasket is intact.

[0018] (2) The production mold of the sealing gasket for water-to-hydrogen production can accurately control the lifting height by using a servo motor, thereby improving the lifting accuracy.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an appearance diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a front view of the internal structure of the present invention;

[0023] Figure 4 A cutaway view of a pressing die of the present invention;

[0024] Figure 5 For the present invention Figure 4 Exploded diagram of

[0025] Figure 6 It is a partial structural diagram of the present invention. Figure 1 ;

[0026] Figure 7 It is a partial structural diagram of the present invention. Figure 2 ;

[0027] Figure 8 For the present invention Figure 7 Another perspective of the picture;

[0028] Fig. 9 It is a state diagram of the lower mold being lifted in the present invention;

[0029] Fig.10 For the present invention Fig. 9 The state diagram of the inner mold body moving downward after the middle and lower molds are continuously lifted on the basis;

[0030] Fig.11 It is a schematic diagram of arranging a part of the bottom mold on the main body of the inner mold in the present invention;

[0031] Fig.12 For the present invention Fig.11 Exploded diagram of

[0032] Fig.13 is an overall diagram of the lifting device in the present invention;

[0033] Fig.14 For the present invention Fig.13 Another perspective of the picture;

[0034] Fig.15 It is a structural schematic diagram of the rotary drive assembly in the present invention;

[0035] Fig.16A diagram showing the relative positions of the rotary drive assembly and the lifting rod in the present invention;

[0036] Fig.17 It is a cross-sectional view of the rotating drum in the present invention;

[0037] Fig.18 It is a schematic diagram of the installation of the pressing die and the rotating moving assembly in the present invention;

[0038] Fig.19 For the present invention Fig.18 A magnified image of area A;

[0039] Fig. 20 It is a schematic diagram of the partial structure of the present invention Figure 3 ;

[0040] Fig.21 It is an assembly diagram of the inner mold support seat and the lifting ring in the present invention.

[0041] In the figure, 1, press base; 2, lifting device; 21, lifting rod; 211, upper threaded part; 212, smooth part; 213, lower threaded part; 22, lifting nut 1; 221, guide block; 23, servo motor; 24, small gear; 25, large gear ring; 26, lifting nut 2; 261, limiting protrusion; 27, guide rod; 28, lifting ring; 281, hinged seat; 29, transmission gear set; 3, inner mold support seat; 31, push rod; 32, pull rod; 33, cushion block; 34, support block; 35, column; 4, cavity seat; 5, pressing mold; 51, outer mold body; 52, bottom mold; 521, L-shaped rod; 53, inner mold body ;54, middle and lower molds;6, rotary drive assembly;61, limit seat one;611, bending frame;62, sector gear;63, rotary cylinder;631, spiral groove two;64, moving column;65, limit ring;66, force slider two;67, sector gear ring;68, connecting rod;7, rotary moving assembly;71, rotary structure;711, active umbrella wheel;712, outer mold shaft;713, driven umbrella wheel;714, transmission umbrella wheel;715, inner mold shaft;716, positioning cylinder;717, limit seat two;72, moving structure;721, follower ring;722, spiral groove one;723, force slider one;724, spokes;8, fixed ring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] According to the following Figure 1-Figure 21 The present invention describes a production mold for a sealing gasket for hydrogen production from water provided by an embodiment of the present invention.

[0045] Example 1: Please refer to Figure 1-Figure 5 An embodiment of the present invention provides a production mold for a sealing gasket for water-to-hydrogen production, including a press base 1 and a pressing mold 5. The pressing mold 5 is located on the press base 1. The pressing mold 5 includes an outer mold body 51 and a bottom mold 52 arranged below the inner wall of the outer mold body 51. In order to adapt to the shape of the sealing gasket, the outer mold body 51 is arranged to be an annular structure, and its upper and lower ends are both open structures. The bottom mold 52 is located at the lower end opening. Preferably, the bottom mold 52 and the outer mold body 51 are an integrated structure, and the wall thickness of the lower part of the outer mold body 51 is greater than the wall thickness of the upper part, thereby improving the stability of the outer mold body 51.

[0046] An inner mold body 53 is also provided in the outer mold body 51. The outer wall of the inner mold body 53, the inner wall of the outer mold body 51 and the upper surface of the bottom mold 52 form a mold cavity. After the polytetrafluoroethylene powder and the remaining powder ingredients are placed in the mold cavity, they are scraped and leveled, and then they can be pressed. Therefore, a middle and lower mold 54 for pressing is also provided here, which is located above the mold cavity. There is also a middle and upper mold (not shown) above the middle and lower mold 54. When the press is working, it can provide pressure to the middle and upper mold. This pressure is transmitted to the powder in the mold cavity through the middle and lower mold 54, so that the powder is formed into a sealing gasket.

[0047] In order to facilitate the upward separation of the middle and lower molds 54 from the mold cavity (it needs to be separated from the mold cavity in two states, one is the feeding stage and the powder scraping stage, and the other is the stage of the middle and lower molds 54 separating from the sealing gasket upward after the sealing gasket is formed), the outer diameter of the middle and lower molds 54 is designed to be larger than the outer diameter of the outer mold body 51, so that the periphery of the middle and lower molds 54 protrudes from the outer mold body 51, so that the purpose of separating from the mold cavity can be achieved by only lifting the protruding part of the middle and lower molds 54 from the bottom upward, so a lifting device 2 is provided here, and the lifting device 2 includes a lifting rod 21, and the lifting rod 21 is rotatably mounted on the press base 1 On the outside of the pressing mold 5, four groups of lifting rods 21 are arranged in the present embodiment, which are evenly distributed in four directions of the pressing mold 5. An upper threaded portion 211 is arranged at the upper end of the lifting rod 21, and a lifting nut 22 is threadedly connected to the upper threaded portion 211. When the lifting rod 21 rotates actively, the lifting nut 22 moves upward under the action of the thread force, so that the lifting nut 22 can lift the middle and lower molds 54 upward and separate the middle and lower molds 54 from the mold cavity upward. At this time, the operation of loading and scraping can be carried out, or the middle and lower molds 54 have completed the demolding process with the formed sealing gasket.

[0048] Preferably, a steel frame for positioning the upper end of the lifting rod 21 is provided above the press base 1, and the upper end of the lifting rod 21 is mounted on the steel frame through a bearing, a guide block 221 is provided on the lifting nut 22, and a long groove for guiding the guide block 221 is provided on the steel frame to ensure that the lifting nut 22 can only move up and down.

[0049] On the other hand, combined Figure 2 and Figure 3 As shown, in order to facilitate the mutual demolding of the outer mold body 51 and the bottom mold 52 from the sealing gasket, a limiting circular groove is provided on the upper surface of the press base 1, and the outer mold body 51 is limited in the limiting circular groove. It can rotate a certain angle in the limiting circular groove and cannot move axially or radially. The reason why the outer mold body 51 is arranged to be rotatable to a certain angle is that when the outer mold body 51 rotates, it can be separated from the pressed sealing gasket, and at this time the bottom mold 52 will also be separated from the sealing gasket accordingly; a rotating drive component 6 for driving the outer mold body 51 to rotate is also provided, and the rotating drive component 6 is located in the press base 1. The rotating drive component 6 is driven to rotate by the lifting rod 21, and is used to push the L-shaped rod 521, so that the outer mold body 51 can be limited to rotate in the circular groove, so as to achieve the circumferential separation of the outer mold body 51 and the bottom mold 52 from the sealing gasket.

[0050] Furthermore, refer to Figure 6-Figure 8 as well as Fig.18As shown, in order to enable the inner mold body 53 to be separated from the pressed sealing gasket, an L-shaped rod 521 and a rotating moving assembly 7 are also provided. The L-shaped rod 521 is fixed to the lower surface of the outer mold body 51, and the L-shaped rod 521 is inserted into the inside of the press base 1. In this embodiment, four groups of L-shaped rods 521 are provided. The upper ends of the four groups of L-shaped rods 521 are at the same distance from the center of the inner mold body 53, and the lower ends of the L-shaped rods 521 extend below the center of the inner mold body 53. The rotating moving assembly 7 includes a rotating structure 71 and a moving structure 7. 2. The rotating structure 71 is located between the inner mold body 53 and the L-shaped rod 521, and is used to transmit the rotating force of the outer mold body 51 to the inner mold body 53, and make the outer mold body 51 rotate in opposite directions to the inner mold body 53, so that the inner mold body 53 can also circumferentially separate from the sealing gasket, and the moving structure 72 is located below the press base 1, and is used to make the rotating inner mold body 53 move downward, so that the inner mold body 53 can axially separate from the sealing gasket, that is, at this time, the inner surface of the annular sealing gasket formed by pressing can be completely exposed. Fig. 9 The inner mold body 53 is in a state where it has not yet moved downward. Fig.10 The inner mold body 53 is in a state where it has been downwardly separated from the sealing gasket. At this time, since there is no stress between the sealing gasket and the pressing mold 5 on each surface, the operator can directly remove the sealing gasket from the bottom mold 52.

[0051] Therefore, the sealing gasket production mold for water-to-hydrogen production provided in the embodiment of the present invention can automatically separate the middle and lower molds 54 and the inner mold body 53 from the sealing gasket during the rotation of the lifting rod 21. When the outer mold body 51 and the bottom mold 52 rotate, a certain shear force will be generated on the outer surface of the sealing gasket. This shear force will eliminate the stress between the sealing gasket and the inner wall of the mold, thereby facilitating demolding.

[0052] Preferably, a compensation cavity is provided in the area on the upper side plate of the press base 1 opposite to the L-shaped rod 521 to compensate for the rotation amount of the L-shaped rod 521 and prevent the press base 1 from blocking the rotation of the L-shaped rod 521 .

[0053] It is worth noting that a part of the bottom mold 52 can also be arranged on the inner mold body 53 (refer to Fig.11 ), so that when the inner mold body 53 moves downward, the pressed and formed sealing gasket actually protrudes from the inner cavity of the bottom mold 52 on the outer mold body 51, so that the operator can more conveniently take out the sealing gasket.

[0054] Specific, combined Fig.13 and Fig.14As shown, in order to realize the synchronous rotation of the above-mentioned lifting rods 21, the lifting device 2 is also provided with a large gear ring 25, and the large gear ring 25 is rotatably installed at the lower part of the inner part of the press base 1. A pinion 24 is fixed at the lower end of the lifting rod 21, and the pinion 24 is meshed with the inner wall of the large gear ring 25. A servo motor 23 for driving one of the pinions 24 to rotate is installed at the bottom of the press base 1 (the servo motor 23 is placed horizontally, and a transmission gear set 29 is arranged between it and the central axis of the pinion 24, and the transmission gear set 29 is formed by two meshing bevel gears). When the servo motor 23 is working, one of the pinions 24 rotates, and then drives the large gear ring 25 to rotate. When the large gear ring 25 rotates, it can drive all the pinions 24 to rotate together, and then make all the lifting rods 21 rotate synchronously.

[0055] Preferably, in order to improve the rotational stability of the large gear ring 25 , a fixed ring 8 is provided on the periphery of the large gear ring 25 through a bearing, and the lower end of the fixed ring 8 is fixed to the bottom surface of the press base 1 .

[0056] Combination Figure 6-Figure 8 as well as Figure 15-17 As shown, in order to achieve the purpose of the above-mentioned rotation drive component 6 being able to drive the outer mold body 51 to rotate a certain angle, a lower threaded portion 213 is provided at the lower section of the lifting rod 21 (a smooth portion 212 is provided between the lower threaded portion 213 and the upper threaded portion 211), and a lifting nut 26 is threadedly connected to the lower threaded portion 213. The lifting nut 26 can move axially along the lifting rod 21. Here, the upward thrust of the lifting nut 26 is used as the power to realize the rotation of the rotation drive component 6.

[0057] Specifically, the above-mentioned rotation drive assembly 6 includes a moving column 64, which is located outside the lifting rod 21 and at the upper end of the lower threaded portion 213. The moving column 64 and the lifting rod 21 are clearance-matched (that is, there is no contact between the moving column 64 and the lifting rod 21). A reserved length is provided between the moving column 64 and the lifting nut 26. This reserved length is to allow a certain time difference between the upward movement of the middle and lower molds 54 for demolding and the rotation of the outer mold body 51 for demolding. That is, when the lifting rod 21 rotates, the lifting nut 1 22 and the lifting nut 2 26 move upward synchronously, and the lifting nut 1 22 that moves upward can move upward. The middle and lower molds 54 are lifted, but at this time the lifting nut 26 is still moving upward within the reserved length until the lifting nut 22 is about to lift the middle and lower molds 54 to the maximum height, and then the lifting nut 26 starts to push the moving column 64, and the rotation of the outer mold body 51 is realized by the upward movement of the moving column 64, that is, when the middle and lower molds 54 are about to reach the maximum height, the outer mold body 51 starts to rotate (in the loading and scraping stages, the outer mold body 51 does not need to be lifted to the highest position, so the rotation drive assembly 6 will not work at this time, thereby ensuring that the pressing mold 5 is stationary during the loading and scraping stages).

[0058] In order to achieve the purpose of driving the outer mold body 51 to rotate by the movable column 64, a rotating cylinder 63 is provided here. The rotating cylinder 63 is located outside the movable column 64, and the up and down movement of the movable column 64 is used to drive the rotating cylinder 63 to rotate. Specifically, a force slider 2 66 is fixed on one side of the outer surface of the movable column 64, and the inner wall of the rotating cylinder 63 is provided with a spiral groove 2 631 adapted to the force slider 2 66. When the lifting nut 26 passes the reserved length and moves to the lower end of the movable column 64, it can push the movable column 64 upward and make the force slider 2 66 move along the spiral groove 2 631, thereby driving the rotating cylinder 63 to rotate.

[0059] A sector gear 62 is fixed on one side of the rotating cylinder 63 close to the L-shaped rod 521, and a sector gear ring 67 is assembled on one side of the L-shaped rod 521 close to the sector gear 62 via a connecting rod 68. The center of the sector gear ring 67 coincides axially with the center of the bottom mold 52, so that when the sector gear 62 rotates, the sector gear ring 67 pushes the outer mold body 51 and the bottom mold 52 to rotate.

[0060] Optionally, the sector gear 62 drives the outer mold body 51 to rotate at an angle of 3°-5°; this is because the outer mold body 51 only needs to rotate slightly to achieve the demoulding action.

[0061] It should be noted that when the force-applying slider 2 66 and the spiral groove 2 631 work together, it is necessary to limit the radial and axial displacement of the rotating cylinder 63 so that it can only rotate, and it is necessary to limit the rotation and radial movement of the moving column 64 so that it can only move axially. Therefore, a limit seat 1 61 is provided on the periphery of the rotating cylinder 63, and the limit seat 1 61 is fixed by a bent frame 611 to limit the limit seat 1 61 to be immobile (preferably, the end of the bent frame 611 away from the limit seat 1 61 is installed on the upper end of the fixed ring 8, so that the position of the limit seat 1 61 is locked, and the limit seat 1 61 is essentially used as a bearing seat of the rotating cylinder 63), and the rotating cylinder 63 is limited to be able to rotate in the limit seat 1 61, and cannot move axially or radially. A limit ring 65 is fixed at the lower end of the moving column 64, and a limit groove is provided on the lower surface of the limit ring 65, and a limit protrusion 261 adapted to the limit groove is provided on the upper surface of the lifting nut 26 to limit the circumferential rotation and radial movement of the moving column 64. A lifting ring 28 is provided between the lifting nuts 26 , and the lifting ring 28 rises and falls synchronously with the lifting nuts 26 .

[0062] Reference Figure 18-Figure 20As shown, specifically, the rotating structure 71 mentioned in the embodiment of the present invention that can make the outer mold body 51 and the inner mold body 53 rotate synchronously and in opposite directions includes an outer mold shaft 712, and the outer mold shaft 712 is fixed to the end of the L-shaped rod 521 away from the bottom mold 52, and the outer mold shaft 712 is located in the axial direction of the outer mold body 51. When the outer mold body 51 rotates, the outer mold shaft 712 rotates accordingly. An inner mold shaft 715 is fixed at the center of the lower surface of the inner mold body 53. The lower end of the inner mold shaft 715 passes through the outer mold shaft 712, and the inner mold shaft 715 and the outer mold shaft 712 are clearance-matched (the two are not in contact). A positioning cylinder 716 is sleeved on the upper end of the inner mold shaft 715, and the positioning cylinder 716 is limited to a state that can only rotate by a limiting seat 717. When the positioning cylinder 716 rotates, it can synchronously drive the inner mold shaft 715 to rotate, so that an active umbrella wheel 711 is fixedly provided at one end of the outer mold shaft 712 close to the outer mold body 51, a driven umbrella wheel 713 is fixedly provided outside the positioning cylinder 716, and a transmission umbrella wheel 714 is meshed between the driven umbrella wheel 713 and the active umbrella wheel 711, so that when the outer mold body 51 rotates a certain angle, the active umbrella wheel 711 can drive the driven umbrella wheel 713 to rotate through the transmission umbrella wheel 714, and the rotation direction of the driven umbrella wheel 713 is opposite to that of the active umbrella wheel 711, and the driven umbrella wheel 713 can drive the inner mold body 53 to rotate through the positioning cylinder 716 and the inner mold shaft 715, so as to achieve the purpose of the outer mold body 51 and the inner mold body 53 rotating in opposite directions.

[0063] Preferably, the inner mold shaft 715 passes through the active umbrella wheel 711 , and a clearance fit is formed between the inner mold shaft 715 and the active umbrella wheel 711 .

[0064] Preferably, the inner mold shaft 715 can slide axially along the positioning cylinder 716 to compensate for the axial displacement of the inner mold body 53 driven by the movable structure 72, so the part of the inner mold shaft 715 that can slide in the positioning cylinder 716 is set as a hexagonal column, and the inner cavity of the positioning cylinder 716 is set as a hexagonal cavity.

[0065] Combination Figure 2 and Fig.18As shown, the movable structure 72 mentioned in the embodiment of the present invention that can move the inner mold body 53 downward includes a follower ring 721, and the follower ring 721 is fixed to the lower end of the inner mold shaft 715 through spokes 724 so that the follower ring 721 can rotate synchronously with the inner mold shaft 715, and a cavity seat 4 is fixed in the middle of the inner lower surface of the press base 1, and the follower ring 721 is accommodated in the interior of the cavity seat 4, and a spiral groove 722 is arranged on the outer surface of the follower ring 721, and a force slider 723 adapted to the spiral groove 722 is fixed on the inner wall of the fixed ring 8, and the other end of the force slider 723 is inserted into the spiral groove 722. When the follower ring 721 rotates, due to the blocking and guiding effect of the force slider 723, the follower ring 721 can also produce a downward displacement, so that the entire inner mold body 53 can be driven to move downward through the inner mold shaft 715, thereby realizing the downward movement and demolding of the inner mold body 53.

[0066] It is worth mentioning that the reason why the circumferential rotation and axial movement of the inner mold body 53 are carried out synchronously is that the thickness of the sealing gasket for hydrogen production from water is relatively small, generally 3 mm. Therefore, if the axial demolding method of the inner mold body 53 is directly adopted instead of the rotational demolding method, the sealing gasket will be subjected to a large shear force in the axial direction, which may easily damage the sealing gasket.

[0067] Embodiment 2: With regard to the above contents, during the pressing stage, the outer mold body 51 and the bottom mold 52 of the pressing mold 5 are supported by the upper surface of the press base 1, while for the inner mold body 53, it only relies on the self-locking of the lifting rod 21 and the support of the follower ring 721 by the force slider 723 as the supporting force, resulting in insufficient stability of the inner mold body 53 during the pressing stage. Therefore, this embodiment is based on Embodiment 1 and provides the inner mold body 53 with an inner mold support seat 3. The inner mold support seat 3 can support the inner mold body 53 during the pressing stage to maintain the stability of the inner mold body 53 during the pressing stage, and does not hinder the downward movement of the inner mold body 53 during the demolding stage.

[0068] Combination Figure 2 , Figure 3 , Figure 6 , Fig.13 , Fig.14 as well as Fig.21 Specifically, the inner mold support seat 3 includes a support block 34, which is located below the inner mold body 53. The support block 34 is supported on the upper surface of the cavity seat 4 through the column 35, and there is a spacing space between two adjacent support blocks 34. This spacing space is used to accommodate the L-shaped rod 521. Preferably, the width of the spacing space is greater than the displacement of the L-shaped rod 521 when the bottom mold 52 rotates, so that after the L-shaped rod 521 and the outer mold body 51 rotate at a certain angle (the angle here is preferably 3°-5°), the support block 34 still does not block the L-shaped rod 521.

[0069] A cushion block 33 is arranged on the upper surface of the support block 34. During the stage of pressing the sealing ring, the support block 34 is supported on the cushion block 33. During the demoulding stage, the cushion block 33 is radially separated from the support block 34, thereby providing a movable space for the downward movement of the inner mold body 53. Preferably, the thickness of the cushion block 33 is greater than the maximum threshold of the descent of the inner mold body 53. Specifically, a lifting ring 28 is provided between the lifting nuts 26, and the lifting ring 28 rises and falls synchronously with the lifting nuts 26. A pull rod 32 is fixed on the side of the cushion block 33 away from the inner mold body 53, and a hinge seat 281 is provided on the upper surface of the lifting ring 28 in an area opposite to the pull rod 32. A push rod 31 is hinged between one end of the pull rod 32 away from the inner mold body 53 and the hinge seat 281. When the lifting ring 28 pushes the push rod 31 upward, the upper end of the push rod 31 can pull the pull rod 32, forming a state in which the cushion block 33 is radially separated from the support block 34, thereby providing a movable descending space for the downward movement of the inner mold body 53.

[0070] Preferably, a guide rod 27 for guiding the lifting ring 28 is assembled inside the press base 1 to ensure the vertical movement of the lifting ring 28 .

[0071] It is worth mentioning that when the lifting rod 21 initially rotates, the lifting nut 1 22 and the lifting nut 2 26 move upward at the same time. The lifting nut 1 22 lifts the middle and lower molds 54 upward at this time. The lifting ring 28 on the lifting nut 26 makes the cushion block 33 radially separate from the support block 34 through the push rod 31. When the lifting nut 26 still contacts the rotation drive assembly 6, the cushion block 33 has completely separated from the support block 34. When the lifting nut 26 contacts the rotation drive assembly 6, the rotation drive assembly 6 can start working. At this time, the rotation of the outer mold body 51 and the rotation and lowering of the inner mold body 53 begin.

[0072] Preferably, a groove cavity for accommodating the cushion block 33 is opened in the area opposite to the cushion block 33 on the upper side plate of the press base 1 to accommodate the cushion block 33 after it is separated from the support block 34.

[0073] Preferably, a guide cavity is provided on the upper side plate of the press base 1 at a position opposite to the pull rod 32 to ensure horizontal movement of the pull rod 32 .

[0074] When in use (at work):

[0075] ① Loading stage:

[0076] First, the servo motor 23 is driven to work, and each lifting rod 21 is driven to rotate through the small gear 24 and the large gear ring 25. During the rotation of the lifting rod 21, the lifting nut 1 22 and the lifting nut 2 26 move upward synchronously. The lifting nut 1 22 can lift the middle and lower molds 54 to a certain height. There is still a distance between this height and the maximum height that the lifting nut 1 22 can reach, so the lifting nut 2 26 will not generate thrust on the rotary drive assembly 6 (although the pad 33 no longer supports the inner mold body 53 at this time, since the press has not started the pressing operation at this time, it will not affect the inner mold body 53), so that the rotary drive assembly 6 will not move, and the entire pressing mold 5 can be kept in a stationary state. At this time, the powder can be loaded into the inside of the mold cavity and scraped flat. After scraping flat, the servo motor 23 drives the lifting nut 1 22 and the lifting nut 2 26 to move downward, and then the middle and lower molds 54 descend into the mold cavity, and the lifting nut 2 26 descends to the initial position.

[0077] ②Suppression stage:

[0078] The press drives the upper die to start moving downward, and the upper die presses down the middle and lower dies 54, so that the middle and lower dies 54 can press the powder into a sealing gasket, and then maintain the pressure.

[0079] ③ Demolding stage:

[0080] First, the servo motor 23 is driven to work, and each lifting rod 21 is driven to rotate through the small gear 24 and the large gear ring 25. During the rotation of the lifting rod 21, the lifting nut 1 22 and the lifting nut 2 26 move upward synchronously. The lifting nut 1 22 can lift the middle and lower molds 54 upward, but it does not reach the highest position. During this process, the lifting nut 26 can push the push rod 31 upward through the lifting ring 28, providing conditions for the subsequent downward movement of the inner mold body 53; as the lifting rod 21 continues to rotate, the lifting nut 1 22 and the lifting nut 2 26 continues to move upward, at this time, the lifting nut 26 pushes the moving column 64 upward, and when the moving column 64 moves upward, the force-applying slider 2 66 moves along the spiral groove 2 631, thereby pushing the rotating cylinder 63 to rotate, so that the sector gear 62 can drive the sector gear ring 67 to rotate, and then due to the action of the L-shaped rod 521, the outer mold body 51 can be rotated (rotated 3°-5°), so that the outer mold body 51 and the bottom mold 52 can rotate in the circumferential direction, thereby eliminating the stress between the sealing gasket and the outer mold body 51 and the bottom mold 52, which is convenient for the sealing gasket to be fixed with the outer mold body 51 and the bottom mold. The outer mold body 52 is separated. During the rotation of the outer mold body 51, the outer mold shaft 712 rotates accordingly. The active umbrella wheel 711 can drive the driven umbrella wheel 713 to rotate through the transmission umbrella wheel 714, and the rotation direction of the driven umbrella wheel 713 is opposite to that of the active umbrella wheel 711. The driven umbrella wheel 713 can drive the inner mold body 53 to rotate through the positioning cylinder 716 and the inner mold shaft 715, so as to achieve the purpose of the outer mold body 51 and the inner mold body 53 rotating in opposite directions. When the inner mold body 53 rotates, it can drive the lower mold body 53 through the inner mold shaft 715. The follower ring 721 rotates together, and due to the blocking and guiding effect of the force-applying slider 723, the follower ring 721 can also produce a downward displacement, so that the entire inner mold body 53 can be driven to move downward through the inner mold shaft 715, thereby realizing the downward movement and demolding of the inner mold body 53, and then the staff can easily take out the sealing gasket. After taking out the sealing gasket, the next cycle of loading can be carried out. Before the next cycle of loading, it is necessary to lower the lifting nut 1 22 and the lifting nut 2 26 for a distance, so that the pressing mold 5 is reset to a state where a mold cavity can be formed.

Claims

1. A production mold for sealing gaskets for water-to-hydrogen production, comprising a press base (1), characterized in that: Also includes: A pressing mold (5), the pressing mold (5) being located on a press base (1), the pressing mold (5) comprising an outer mold body (51), a bottom mold (52) arranged below the inner wall of the outer mold body (51), and an inner mold body (53) located inside the outer mold body (51), the outer wall of the inner mold body (53), the inner wall of the outer mold body (51), and the upper surface of the bottom mold (52) forming a mold cavity, a middle and lower mold (54) being arranged above the mold cavity, the outer diameter of the middle and lower mold (54) being larger than the outer diameter of the outer mold body (51); A lifting rod (21), wherein the lifting rod (21) is rotatably mounted on the press base (1), and the lifting rod (21) is located outside the pressing mold (5), and an upper threaded portion (211) is provided at the upper end of the lifting rod (21), and a lifting nut (22) is threadedly connected to the upper threaded portion (211), and the lifting rod (21) can actively rotate so that the lifting nut (22) moves axially upward along the lifting rod (21) to lift the middle and lower molds (54) upward, thereby forming a state in which the middle and lower molds (54) are separated from the mold cavity; An L-shaped rod (521), wherein the L-shaped rod (521) is fixedly arranged on the lower surface of the outer mold body (51), and the L-shaped rod (521) is inserted into the interior of the press base (1); A rotation drive assembly (6), wherein the upper surface of the press base (1) is provided with a limiting circular groove, the outer mold body (51) is located in the limiting circular groove, the rotation drive assembly (6) is located in the press base (1), the rotation drive assembly (6) is driven by a lifting rod (21), and the rotation drive assembly (6) is used to push the L-shaped rod (521) so that the outer mold body (51) can rotate within the circular groove; A rotational movement assembly (7), the rotational movement assembly (7) comprising a rotational structure (71) and a movement structure (72), the rotational structure (71) being located between the inner mold body (53) and the L-shaped rod (521) and being used to transmit the rotational force of the outer mold body (51) to the inner mold body (53) and to make the outer mold body (51) rotate in opposite directions to the inner mold body (53), and the movement structure (72) being located below the press base (1) and being used to enable the inner mold body (53) to move downwards while rotating.

2. A sealing gasket production mold for water hydrogen production according to claim 1, characterized in that: The rotating structure (71) comprises: An outer mold shaft (712), wherein the outer mold shaft (712) is fixed to an end of the L-shaped rod (521) away from the bottom mold (52), and the outer mold shaft (712) is located in the axial direction of the outer mold body (51), and an active umbrella wheel (711) is fixedly provided at one end of the outer mold shaft (712) close to the outer mold body (51); An inner mold shaft (715), wherein the upper end of the inner mold shaft (715) is fixedly arranged at the center of the lower surface of the inner mold body (53), and the lower end of the inner mold shaft (715) passes through the active umbrella wheel (711) and the outer mold shaft (712), and a clearance fit is formed between the inner mold shaft (715) and the active umbrella wheel (711); A positioning cylinder (716), wherein the positioning cylinder (716) is sleeved on the upper end of the inner mold shaft (715), and the positioning cylinder (716) is limited to a state where it can only rotate by a second limiting seat (717). When the positioning cylinder (716) rotates, it can synchronously drive the inner mold shaft (715) to rotate, and a driven umbrella wheel (713) is fixedly disposed on the outside of the positioning cylinder (716); a transmission umbrella wheel (714), wherein the transmission umbrella wheel (714) is meshed between the driven umbrella wheel (713) and the driving umbrella wheel (711), the rotational force of the driving umbrella wheel (711) is transmitted to the driven umbrella wheel (713) through the transmission umbrella wheel (714), and the driven umbrella wheel (713) rotates in opposite directions to the driving umbrella wheel (711); The inner mold shaft (715) is capable of sliding along the axial direction of the positioning cylinder (716).

3. A sealing gasket production mold for water hydrogen production according to claim 2, characterized in that: A cavity seat (4) is fixedly provided in the middle of the lower surface of the press base (1); The mobile structure (72) comprises: A follower ring (721), the follower ring (721) being fixed to the lower end of the inner mold shaft (715) via spokes (724) and being capable of rotating along with the inner mold shaft (715), and the follower ring (721) being located in the cavity seat (4); A spiral groove (722), wherein the spiral groove (722) is formed on the outer surface of the follower ring (721); A force-applying slider (723), one end of which is fixed to the inner wall of the fixed ring (8), and the other end of which is inserted into the spiral groove (722); the lower end of the fixed ring (8) is fixed to the bottom surface of the press base (1); when the follower ring (721) rotates, it can generate axial displacement through the guiding effect of the spiral groove (722) and the force-applying slider (723), thereby driving the inner mold body (53) to generate axial displacement.

4. A sealing gasket production mold for water-to-hydrogen production according to claim 3, characterized in that: The lower section of the lifting rod (21) is provided with a lower threaded portion (213), and a second lifting nut (26) is threadedly connected to the lower threaded portion (213), and the second lifting nut (26) is capable of axially moving along the lifting rod (21); The rotary drive assembly (6) comprises: A movable column (64), wherein the movable column (64) is located outside the lifting rod (21) and at the upper end of the lower threaded portion (213), the movable column (64) and the lifting rod (21) are clearance-matched, and a reserved length is provided between the movable column (64) and the second lifting nut (26); A rotating cylinder (63), the rotating cylinder (63) being located on the periphery of the moving column (64), a limiting seat (61) being provided on the periphery of the rotating cylinder (63), the limiting seat (61) being fixed by a bent frame (611), and the rotating cylinder (63) being able to rotate within the limiting seat (61); A force-applying slider (66) is fixed on one side of the outer surface of the movable column (64); the inner wall of the rotating cylinder (63) is provided with a spiral groove (631) adapted to the force-applying slider (66); when the lifting nut (26) passes through a reserved length and moves to the lower end of the movable column (64), it can push the movable column (64) upwards and make the force-applying slider (66) move along the spiral groove (631), thereby forming a state in which the rotating cylinder (63) rotates; a limiting ring (65) is fixedly provided at the lower end of the movable column (64); a limiting groove is provided on the lower surface of the limiting ring (65); and a limiting protrusion (261) adapted to the limiting groove is provided on the upper surface of the lifting nut (26); a sector gear (62), the sector gear (62) being fixed to a side of the rotating cylinder (63) close to the L-shaped rod (521); a sector gear ring (67) being assembled on a side of the L-shaped rod (521) close to the sector gear (62) via a connecting rod (68); the center of the sector gear ring (67) being axially coincident with the center of the bottom mold (52), so that when the sector gear (62) rotates, the sector gear ring (67) can push the outer mold body (51) and the bottom mold (52) to rotate; The rotation angle of the outer mold body (51) is 3°-5°.

5. A sealing gasket production mold for water-to-hydrogen production according to claim 4, characterized in that: A lifting ring (28) is provided between the second lifting nut (26), and the lifting ring (28) rises and falls synchronously with the second lifting nut (26); It also includes an inner mold support seat (3) for providing support force to the inner mold body (53), and the inner mold support seat (3) includes: A support block (34), the support block (34) being located below the inner mold body (53), the support block (34) being supported on the upper surface of the cavity seat (4) via a column (35), and a spacing space being provided between two adjacent support blocks (34); A cushion block (33), wherein the cushion block (33) is located on the upper surface of the support block (34), and the support block (34) is supported on the cushion block (33) during the sealing ring pressing stage; A pull rod (32), wherein the pull rod (32) is fixed on a cushion block (33); A push rod (31), an area on the upper surface of the lifting ring (28) opposite to the pull rod (32) is provided with a hinge seat (281), one end of the push rod (31) is rotatably mounted on the hinge seat (281), and the other end of the push rod (31) is rotatably connected to the pull rod (32), and when the lifting ring (28) pushes the push rod (31) upward, the upper end of the push rod (31) can pull the pull rod (32), forming a state in which the cushion block (33) is radially separated from the support block (34).

6. A sealing gasket production mold for water-to-hydrogen production according to claim 5, characterized in that: The position of the spacing space is opposite to the L-shaped rod (521), and the width of the spacing space is greater than the displacement of the L-shaped rod (521) when the bottom mold (52) rotates.

7. A sealing gasket production mold for water-to-hydrogen production according to claim 6, characterized in that: The thickness of the cushion block (33) is greater than the maximum threshold value of the descent of the inner mold body (53).

8. A sealing gasket production mold for water-to-hydrogen production according to claim 7, characterized in that: A groove cavity for accommodating the cushion block (33) is provided on the upper side plate of the press base (1) in an area opposite to the cushion block (33); A guide cavity is provided on the upper side plate of the press base (1) at a position opposite to the pull rod (32).

9. A sealing gasket production mold for water-to-hydrogen production according to claim 1, characterized in that: A compensation cavity is provided in an area on the upper side plate of the press base (1) opposite to the L-shaped rod (521) to compensate for the rotation amount of the L-shaped rod (521).

10. A production mold for a sealing gasket for hydrogen production from water according to any one of claims 1 to 9, characterized in that: A large gear ring (25) is rotatably mounted at the lower part of the press base (1); A small gear (24) is fixed to the lower end of the lifting rod (21), and the small gear (24) is meshed with the inner wall of the large gear ring (25). A servo motor (23) for driving one of the small gears (24) to rotate is installed at the bottom of the press base (1); The periphery of the large gear ring (25) is provided with a fixed surrounding ring (8) via a bearing.

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