Hinge type pressing plate clamp

Abstract

The invention discloses a hinge type pressing plate clamp and aims to overcome the defect that in the prior art, when a clamp clamps a valve body, the valve body is difficult to stably clamp due to the fact that the surface of the valve body is irregular. The technical problem is solved through the following technical scheme that a lifting pressing plate capable of ascending and descending is arranged on a base; a first pressing head assembly and a second pressing head assembly are arranged at the two ends of the lifting pressing plate correspondingly. The first pressing head assembly and the second pressing head assembly each comprise a first pressing rod hinged to the lifting pressing plate, the two ends of each first pressing rod are provided with a first pressing head and a second pressing rod, and the two ends of each second pressing rod are provided with a second pressing head and a third pressing head respectively. When the valve body is pressed, the first pressing rod and the second pressing rod swing in a plane perpendicular to the base. And the first pressing head, the second pressing head and the third pressing head can automatically adjust the height to automatically adapt to the uneven condition of the surface of the valve body, so that the valve body is clamped more firmly.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and more particularly to a hinged pressure plate clamp. Background Art

[0002] Valve bodies are used in various technical fields. During the processing of valve bodies, fixtures are needed to position the valve bodies. Since the shapes, sizes, and concave-convex degrees of different types of valve bodies are different, specific fixtures are usually required for different types of valve bodies to position the valve bodies to be processed.

[0003] Although the clamps in the prior art have various forms for valve bodies with square structures, it is difficult to completely press the surface of the square valve body to be processed due to the uneven surface of the valve body, so errors are prone to occur in the valve body during processing. Summary of the invention

[0004] The present invention overcomes the deficiency of the clamp in the prior art that it is difficult to stably clamp the valve body due to the irregularity of the valve body surface when clamping the valve body, and provides a hinged pressure plate clamp that can adapt to the unevenness of the clamp surface, thereby clamping the clamp in all directions; in addition, the clamp in the present application can clamp two valve bodies at the same time, thereby improving the efficiency of valve body clamping and processing.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a hinged pressure plate clamp, comprising: A base, on which a lifting and lowering pressure plate capable of being raised and lowered is arranged; The two ends of the lifting and lowering pressure plate are respectively provided with a first pressure head assembly and a second pressure head assembly; The first pressing head assembly and the second pressing head assembly each include a first pressing rod hinged on the lifting pressing plate, one end of the first pressing rod is provided with a first pressing head, the other end of the first pressing rod is hinged with a second pressing rod, and the two ends of the second pressing rod are respectively provided with a second pressing head and a third pressing head; When the valve body is pressed, both the first pressing rod and the second pressing rod swing in a plane perpendicular to the base.

[0006] When the present invention is used, two valve bodies to be processed can be directly placed in a position that matches the first pressure head assembly and the second pressure head assembly, and then the lifting and lowering pressure plate moves downward, so that the first pressure head assembly and the second pressure head assembly are respectively pressed on the two valve bodies. In the process of the first pressure head assembly and the second pressure head assembly being pressed on the valve body, since the first pressure rod is hinged on the lifting and lowering pressure plate, when the two ends of the first pressure rod are subjected to uneven force, the first pressure rod will rotate around the lifting and lowering pressure plate, thereby automatically adjusting the angle of the first pressure rod. Similarly, when the two ends of the second pressure rod are subjected to uneven force, the two ends of the first pressure rod will also rotate around the end of the first pressure rod, automatically adjusting the angle, so that the two ends of the first pressure rod and the second pressure rod are subjected to uniform force. Therefore, in the present application, when the first pressure head assembly and the second pressure head assembly are pressed on the valve body, the first pressing head, the second pressing head and the third pressing head can automatically adjust the height, automatically adapt to the uneven condition of the valve body surface, so that the valve body is clamped more firmly.

[0007] By using three clamping heads to act on the valve body, a single clamping head cooperates to form three force points, so that it can act on the valve body better, making the valve body clamped more stably.

[0008] In addition, when the lifting and lowering pressure plate moves downward, the first pressure head assembly and the second pressure head assembly are driven to move at the same time, so that the two valve bodies can be clamped at the same time, thereby improving the clamping efficiency of the valve body and further improving the processing efficiency of the valve body. In addition, the first pressure head assembly and the second pressure head assembly cooperate with each other, so that the lifting and lowering pressure plate is more stably stressed, and the stability of the valve body after clamping is also improved.

[0009] Preferably, both end portions of the lifting and pressing plate are provided with a first opening groove, both sides of the first opening groove are provided with a first through hole, the first pressure rod is provided with a first hinged head matching with the first opening groove, the first hinged head is provided with a first hinge hole matching with the first through hole, and the first pin shaft passes through the first through hole and the first hinged hole.

[0010] The first hinge joint and the first opening groove cooperate to enable the first pressure rod to rotate freely at the end of the lifting and lowering pressure plate, so that when the forces on both ends of the first pressure rod are unbalanced, the angle of the first pressure rod can be automatically adjusted. Thus, it can automatically adapt to the unevenness of the valve body surface. In addition, the cooperation of the first hinge joint and the first pin shaft can greatly facilitate the installation of the first pressure rod.

[0011] Preferably, the first hinged joint is arranged at a middle position of the first pressure rod.

[0012] The above structure enables the two ends of the first pressure rod to maintain equal forces, and the two ends of the first pressure rod can also ensure the same forces as much as possible, so that when the forces on the two ends of the first pressure rod are unbalanced, the first pressure rod can adjust the angle more sensitively.

[0013] Preferably, a second hinged joint is provided at the end of the first pressure rod away from the first pressing head, a second hinged hole is penetrated through the second pressure rod, and the second hinged joint is inserted into the second hinged hole.

[0014] The end of the first pressure rod is set as a second hinge joint. Through the cooperation of the second hinge joint and the second hinge hole, the second pressure rod can rotate freely at the end of the first pressure rod, making its own structure simpler and convenient to assemble.

[0015] Preferably, the second hinged joint is arranged at a middle position of the second pressure rod.

[0016] The above structure makes the distance from both ends of the second pressure rod to the second hinge joint equal, so that when the pressures on the two ends of the second pressure rod are different, the second pressure rod itself can adjust the angle more sensitively, so that the clamping heads at both ends of the second pressure rod can better fit the uneven surface of the valve body.

[0017] Preferably, the first pressing head, the second pressing head and the third pressing head are all made of rubber material.

[0018] The first pressing head, the second pressing head and the third pressing head are made of rubber material, which can reduce the damage to the surface of the valve body. At the same time, when the valve body is being processed, the first pressing head, the second pressing head and the third pressing head made of rubber material can reduce the vibration generated by the processing, and have the effect of buffering and reducing vibration.

[0019] Preferably, the bottoms of the first pressing head, the second pressing head and the third pressing head are all provided with pressing convex heads, and a plurality of regularly arranged convex heads are provided on the pressing convex heads.

[0020] Several convex heads are regularly arranged to form a convex head surface, which can increase the friction when contacting the surface of the valve body, so that the first pressing head, the second pressing head and the third pressing head can all be stably pressed on the surface of the valve body.

[0021] Preferably, a mounting bottom block is detachably provided at the center position of the base, a mounting bottom hole is provided on the mounting bottom block, and a mounting bolt threadedly matched with the mounting bottom hole is provided in the mounting bottom hole; a lifting through hole is provided on the lifting and lowering pressure plate, and the mounting bolt passes through the lifting through hole and is connected to the mounting bottom hole.

[0022] When the valve body is clamped, the mounting bolt is rotated to drive the lifting and lowering pressure plate to move downward, so that the first pressure head assembly and the second pressure head assembly act on the valve body to clamp the valve body. The device has the characteristics of simple structure and convenient operation.

[0023] Preferably, a plurality of support pads are provided on the base.

[0024] The support pad is installed on the base by bolts. The support pad can adjust its position on the base according to the specific shape of the valve body, so as to provide good support for the valve body.

[0025] Preferably, a supporting base plate is provided on the base, and supporting positioning pins are provided on the supporting base plate.

[0026] The support positioning pin can position the valve. The valve body can be accurately seated on the base according to the function of the support positioning pin, thereby improving the stable clamping speed of the valve body and further improving the processing efficiency of the valve body.

[0027] Compared with the prior art, the present invention has the following beneficial effects: (1) The two valve bodies to be processed can be directly placed in a position that matches the first pressure head assembly and the second pressure head assembly, and then the lifting and lowering pressure plate moves downward, so that the first pressure head assembly and the second pressure head assembly are respectively pressed on the two valve bodies. In the process of pressing the first pressure head assembly and the second pressure head assembly on the valve body, since the first pressure rod is hinged on the lifting and lowering pressure plate, when the two ends of the first pressure rod are subjected to uneven force, the first pressure rod will rotate around the lifting and lowering pressure plate, thereby automatically adjusting the angle of the first pressure rod. Similarly, when the two ends of the second pressure rod are subjected to uneven force, the two ends of the first pressure rod will also rotate around the end of the first pressure rod and automatically adjust the angle so that the two ends of the first pressure rod and the second pressure rod are subjected to uniform force. Therefore, in the present application, when the first pressure head assembly and the second pressure head assembly are pressed on the valve body, the first pressing head, the second pressing head and the third pressing head can automatically adjust the height and automatically adapt to the unevenness of the valve body surface, so that the valve body is clamped more firmly.

[0028] (2) Three clamping heads are used to act on the valve body. A single clamping head cooperates to form three force points, so that it can better act on the valve body, making the valve body clamped more stably.

[0029] (3) When the lifting and lowering pressure plate moves downward, the first pressure head assembly and the second pressure head assembly are driven to move at the same time, so that the two valve bodies can be clamped at the same time, thereby improving the clamping efficiency of the valve body and further improving the processing efficiency of the valve body. In addition, the first pressure head assembly and the second pressure head assembly cooperate with each other, so that the lifting and lowering pressure plate is more stably stressed, and the stability of the valve body after clamping is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural diagram of the present invention.

[0031] Figure 2 It is a state diagram when the present invention is used.

[0032] Figure 3 It is an exploded view of the local structure of the present invention.

[0033] Figure 4 It is an exploded view from another angle of the present invention.

[0034] In the figure: 1, base, 11, support pad, 12, support bottom plate, 121, support positioning pin; 2. lifting plate, 21. lifting through hole, 22. first opening slot, 221. first through hole; 3. First pressing head assembly, 31. First pressing rod, 311. First pressing head, 312. First hinge joint, 313. First hinge hole, 314. First pin shaft, 315. Second hinge joint, 32. Second pressing rod, 321. Second pressing head, 322. Third pressing head, 323. Second hinge hole; 4. Second pressure head assembly; 5. Install the bottom block, 51. Install the bottom hole, 52. Install the bolts. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: Reference Figures 1 to 4 As shown, a hinged pressure plate clamp comprises: A base 1, on which a lifting and lowering plate 2 capable of being raised and lowered is arranged; The two ends of the lifting and lowering plate 2 are respectively provided with a first pressing head assembly 3 and a second pressing head assembly 4; The first pressing head assembly 3 and the second pressing head assembly 4 both include a first pressing rod 31 hinged on the lifting and lowering pressing plate 2, one end of the first pressing rod 31 is provided with a first pressing head 311, the other end of the first pressing rod 31 is hinged with a second pressing rod 32, and the two ends of the second pressing rod 32 are respectively provided with a second pressing head 321 and a third pressing head 322; When the valve body is pressed, the first pressing rod 31 and the second pressing rod 32 both swing in a plane perpendicular to the base 1 .

[0036] In the present application, when in use, the two valve bodies to be processed can be directly placed in a position that matches the first pressure head assembly 3 and the second pressure head assembly 4, and then the lifting and lowering plate 2 moves downward, so that the first pressure head assembly 3 and the second pressure head assembly 4 are respectively pressed on the two valve bodies. In the process of the first pressure head assembly 3 and the second pressure head assembly 4 being pressed on the valve body, since the first pressure rod 31 is hinged on the lifting and lowering plate 2, when the two ends of the first pressure rod 31 are subjected to uneven force, the first pressure rod 31 will rotate around the lifting and lowering plate 2, thereby automatically adjusting the angle of the first pressure rod 31. Similarly, when the two ends of the second pressure rod 32 are subjected to uneven force, the two ends of the first pressure rod 31 will also rotate around the end of the first pressure rod 31, automatically adjusting the angle, so that the two ends of the first pressure rod 31 and the second pressure rod 32 are subjected to even force. Therefore, in the present application, when the first pressing head assembly 3 and the second pressing head assembly 4 are pressed against the valve body, the first pressing head 311, the second pressing head 321 and the third pressing head 322 can automatically adjust the height and automatically adapt to the uneven condition of the valve body surface, thereby making the valve body clamped more firmly.

[0037] By using three clamping heads to act on the valve body, a single clamping head cooperates to form three force points, so that it can act on the valve body better, making the valve body clamped more stably.

[0038] In addition, when the lifting plate 2 moves downward, the first pressure head assembly 3 and the second pressure head assembly 4 are driven to move at the same time, so that the two valve bodies can be clamped at the same time, thereby improving the clamping efficiency of the valve body, and then improving the processing efficiency of the valve body. In addition, the first pressure head assembly 3 and the second pressure head assembly 4 cooperate with each other, so that the lifting plate 2 is more stably stressed, and the stability of the valve body after clamping is also improved.

[0039] Example 2: Reference Figures 1 to 4 As shown, a hinged pressure plate clamp comprises: a base 1, on which a lifting and lowering pressure plate 2 capable of being raised and lowered is arranged; a first pressure head assembly 3 and a second pressure head assembly 4 are respectively arranged at both ends of the lifting and lowering pressure plate 2.

[0040] The first pressing head assembly 3 and the second pressing head assembly 4 both include a first pressing rod 31 hinged on the lifting and lowering pressing plate 2, one end of the first pressing rod 31 is provided with a first pressing head 311, the other end of the first pressing rod 31 is hinged with a second pressing rod 32, and the two ends of the second pressing rod 32 are respectively provided with a second pressing head 321 and a third pressing head 322; When the valve body is pressed, the first pressing rod 31 and the second pressing rod 32 both swing in a plane perpendicular to the base 1 .

[0041] The specific structures of the first pressing head assembly 3 and the second pressing head assembly 4 can be the same or different. In this embodiment, the first pressing head assembly 3 and the second pressing head assembly 4 have the same structure, and the first pressing head assembly 3 and the second pressing head assembly 4 are symmetrically arranged on both sides of the base 1.

[0042] The lifting plate 2 drives the first pressure head assembly 3 and the second pressure head assembly 4 to move away from or towards the base 1 to achieve the clamping of the valve body. The lifting plate 2 can be lifted and lowered in a variety of ways, such as using a cylinder structure, a ball screw structure, etc. to achieve the movement of the lifting plate 2, so that the lifting plate 2 can move closer to or away from the base 1.

[0043] In this embodiment, in order to simplify the overall structure of the clamp, the lifting function of the lifting and lowering plate 2 is realized. A mounting bottom block 5 is detachably provided at the center position of the base 1, and the mounting bottom block 5 is fixedly installed on the base 1 by bolts. A mounting bottom hole 51 is provided on the mounting bottom block 5, and the mounting bottom hole 51 is provided on the upper end surface of the mounting bottom block 5, and the mounting bottom hole 51 is provided along the vertical direction. A mounting bolt 52 threadedly matched with the mounting bottom hole 51 is provided in the mounting bottom hole 51; a lifting and lowering through hole 21 is provided on the lifting and lowering plate 2, and the mounting bolt 52 passes through the lifting and lowering through hole 21 and is connected to the mounting bottom hole 51. Therefore, when the valve body is clamped, by rotating the mounting bolt 52, the lifting and lowering plate 2 is driven to move downward by the action of the mounting bolt 52, so that the first pressure head assembly 3 and the second pressure head assembly 4 act on the valve body to achieve clamping of the valve body.

[0044] In one embodiment, both ends of the lifting and pressing plate 2 are provided with first opening slots 22, and the opening directions of the first opening slots 22 at both ends of the lifting and pressing plate 2 are opposite. First through holes 221 are provided on both sides of the first opening slot 22, and the first pressure rod 31 is provided with a first hinged head 312 matched with the first opening slot 22, and the first hinged head 321 is provided with a first hinged hole 313 matched with the first through hole 221, and the first pin shaft 314 passes through the first through hole 221 and the first hinged hole 313, so that the first hinged head 321 can rotate around the first pin shaft 314.

[0045] The first hinge joint 321 cooperates with the first opening slot 22, so that the first pressure rod 31 can rotate freely at the end of the lifting and lowering plate 2, so that when the forces on both ends of the first pressure rod 31 are unbalanced, the angle of the first pressure rod 31 can be automatically adjusted. Thus, it can automatically adapt to the unevenness of the valve body surface. In addition, through the cooperation of the first hinge joint 321 and the first pin shaft 314, the installation of the first pressure rod 31 can be very convenient.

[0046] In addition, in this embodiment, the first hinge joint 321 is arranged in the middle of the first pressure rod 31. Thus, the two ends of the first pressure rod 31 can maintain equal forces, and the two ends of the first pressure rod 31 can also ensure the same forces as much as possible. When the forces on the two ends of the first pressure rod 31 are unbalanced, the angle can be adjusted more sensitively.

[0047] In one embodiment, a second hinged joint 315 is provided at the end of the first pressure rod 31 away from the first pressing head 311, and the second hinged joint 315 is cylindrical. A second hinged hole 323 is provided through the second pressure rod 32, and the second hinged joint 315 is inserted into the second hinged hole 323. The end of the first pressure rod 31 is provided as the second hinged joint 315, and through the cooperation between the second hinged joint 315 and the second hinged hole 323, the second pressure rod 32 can rotate freely at the end of the first pressure rod 31, so that its own structure can be simpler and convenient to assemble.

[0048] In addition, the second hinge joint 315 in this embodiment is arranged in the middle of the second pressure rod 32. Thus, the distances from the two ends of the second pressure rod 32 to the second hinge joint 315 are equal, so that when the pressures on the two ends of the second pressure rod 32 are different, the second pressure rod 32 itself can adjust the angle more sensitively, so that the pressing heads at the two ends of the second pressure rod 32 can better fit the uneven surface of the valve body.

[0049] Through the above structure, the first clamping head 311, the second clamping head 321 and the third clamping head 322 are interconnected to form an isosceles triangle clamping sealing area. When this triangular clamping sealing area acts on the valve body, the valve body can be stably set on the base 1, thereby preventing the position of the valve body from being shifted during the valve body processing and reducing the occurrence of valve body processing errors.

[0050] The first pressing head 311, the second pressing head 321 and the third pressing head 322 are all made of rubber material. The first pressing head 311, the second pressing head 321 and the third pressing head 322 are made of rubber material, which can reduce the damage to the surface of the valve body. At the same time, when the valve body is being processed, the first pressing head 311, the second pressing head 321 and the third pressing head 322 made of rubber material can reduce the vibration generated by the processing, and have a buffering and vibration reduction effect.

[0051] In addition, the bottoms of the first pressing head 311, the second pressing head 321 and the third pressing head 322 are all provided with pressing convex heads, and a plurality of regularly arranged convex heads are provided on the pressing convex heads. The plurality of convex heads are regularly arranged to form a convex head surface, which can increase the friction force when contacting with the surface of the valve body, so that the first pressing head 311, the second pressing head 321 and the third pressing head 322 can all be stably pressed on the surface of the valve body.

[0052] In the present application, when in use, the two valve bodies to be processed can be directly placed in a position that matches the first pressure head assembly 3 and the second pressure head assembly 4, and then the lifting and lowering plate 2 moves downward, so that the first pressure head assembly 3 and the second pressure head assembly 4 are respectively pressed on the two valve bodies. In the process of the first pressure head assembly 3 and the second pressure head assembly 4 being pressed on the valve body, since the first pressure rod 31 is hinged on the lifting and lowering plate 2, when the two ends of the first pressure rod 31 are subjected to uneven force, the first pressure rod 31 will rotate around the lifting and lowering plate 2, thereby automatically adjusting the angle of the first pressure rod 31. Similarly, when the two ends of the second pressure rod 32 are subjected to uneven force, the two ends of the first pressure rod 31 will also rotate around the end of the first pressure rod 31, automatically adjusting the angle, so that the two ends of the first pressure rod 31 and the second pressure rod 32 are subjected to even force. Therefore, in the present application, when the first pressing head assembly 3 and the second pressing head assembly 4 are pressed against the valve body, the first pressing head 311, the second pressing head 321 and the third pressing head 322 can automatically adjust the height and automatically adapt to the uneven condition of the valve body surface, thereby making the valve body clamped more firmly.

[0053] By using three clamping heads to act on the valve body, a single clamping head cooperates to form three force points, so that it can act on the valve body better, making the valve body clamped more stably.

[0054] In addition, when the lifting plate 2 moves downward, the first pressure head assembly 3 and the second pressure head assembly 4 are driven to move at the same time, so that the two valve bodies can be clamped at the same time, thereby improving the clamping efficiency of the valve body, and then improving the processing efficiency of the valve body. In addition, the first pressure head assembly 3 and the second pressure head assembly 4 cooperate with each other, so that the lifting plate 2 is more stably stressed, and the stability of the valve body after clamping is also improved.

[0055] Example 3: Reference Figures 1 to 4 As shown, a hinged pressure plate clamp comprises: a base 1, on which a lifting and lowering pressure plate 2 capable of being raised and lowered is arranged; a first pressure head assembly 3 and a second pressure head assembly 4 are respectively arranged at both ends of the lifting and lowering pressure plate 2.

[0056] The first pressing head assembly 3 and the second pressing head assembly 4 both include a first pressing rod 31 hinged on the lifting and lowering pressing plate 2, one end of the first pressing rod 31 is provided with a first pressing head 311, the other end of the first pressing rod 31 is hinged with a second pressing rod 32, and the two ends of the second pressing rod 32 are respectively provided with a second pressing head 321 and a third pressing head 322; When the valve body is pressed, the first pressing rod 31 and the second pressing rod 32 both swing in a plane perpendicular to the base 1 .

[0057] The specific structures of the first pressing head assembly 3 and the second pressing head assembly 4 can be the same or different. In this embodiment, the first pressing head assembly 3 and the second pressing head assembly 4 have the same structure, and the first pressing head assembly 3 and the second pressing head assembly 4 are symmetrically arranged on both sides of the base 1.

[0058] The lifting plate 2 drives the first pressure head assembly 3 and the second pressure head assembly 4 to move away from or towards the base 1 to achieve the clamping of the valve body. The lifting plate 2 can be lifted and lowered in a variety of ways, such as using a cylinder structure, a ball screw structure, etc. to achieve the movement of the lifting plate 2, so that the lifting plate 2 can move closer to or away from the base 1.

[0059] In this embodiment, in order to simplify the overall structure of the clamp, the lifting function of the lifting and lowering plate 2 is realized. A mounting bottom block 5 is detachably provided at the center position of the base 1, and the mounting bottom block 5 is fixedly installed on the base 1 by bolts. A mounting bottom hole 51 is provided on the mounting bottom block 5, and the mounting bottom hole 51 is provided on the upper end surface of the mounting bottom block 5, and the mounting bottom hole 51 is provided along the vertical direction. A mounting bolt 52 threadedly matched with the mounting bottom hole 51 is provided in the mounting bottom hole 51; a lifting and lowering through hole 21 is provided on the lifting and lowering plate 2, and the mounting bolt 52 passes through the lifting and lowering through hole 21 and is connected to the mounting bottom hole 51. Therefore, when the valve body is clamped, by rotating the mounting bolt 52, the lifting and lowering plate 2 is driven to move downward by the action of the mounting bolt 52, so that the first pressure head assembly 3 and the second pressure head assembly 4 act on the valve body to achieve clamping of the valve body.

[0060] In one embodiment, both ends of the lifting and pressing plate 2 are provided with first opening slots 22, and the opening directions of the first opening slots 22 at both ends of the lifting and pressing plate 2 are opposite. First through holes 221 are provided on both sides of the first opening slot 22, and the first pressure rod 31 is provided with a first hinged head 312 matched with the first opening slot 22, and the first hinged head 321 is provided with a first hinged hole 313 matched with the first through hole 221, and the first pin shaft 314 passes through the first through hole 221 and the first hinged hole 313, so that the first hinged head 321 can rotate around the first pin shaft 314.

[0061] The first hinge joint 321 cooperates with the first opening slot 22, so that the first pressure rod 31 can rotate freely at the end of the lifting and lowering plate 2, so that when the forces on both ends of the first pressure rod 31 are unbalanced, the angle of the first pressure rod 31 can be automatically adjusted. Thus, it can automatically adapt to the unevenness of the valve body surface. In addition, through the cooperation of the first hinge joint 321 and the first pin shaft 314, the installation of the first pressure rod 31 can be very convenient.

[0062] In addition, in this embodiment, the first hinge joint 321 is arranged in the middle of the first pressure rod 31. Thus, the two ends of the first pressure rod 31 can maintain equal forces, and the two ends of the first pressure rod 31 can also ensure the same forces as much as possible. When the forces on the two ends of the first pressure rod 31 are unbalanced, the angle can be adjusted more sensitively.

[0063] In one embodiment, a second hinged joint 315 is provided at the end of the first pressure rod 31 away from the first pressing head 311, and the second hinged joint 315 is cylindrical. A second hinged hole 323 is provided through the second pressure rod 32, and the second hinged joint 315 is inserted into the second hinged hole 323. The end of the first pressure rod 31 is provided as the second hinged joint 315, and through the cooperation between the second hinged joint 315 and the second hinged hole 323, the second pressure rod 32 can rotate freely at the end of the first pressure rod 31, so that its own structure can be simpler and convenient to assemble.

[0064] In addition, the second hinge joint 315 in this embodiment is arranged in the middle of the second pressure rod 32. Thus, the distances from the two ends of the second pressure rod 32 to the second hinge joint 315 are equal, so that when the pressures on the two ends of the second pressure rod 32 are different, the second pressure rod 32 itself can adjust the angle more sensitively, so that the pressing heads at the two ends of the second pressure rod 32 can better fit the uneven surface of the valve body.

[0065] Through the above structure, the first clamping head 311, the second clamping head 321 and the third clamping head 322 are interconnected to form an isosceles triangle clamping sealing area. When this triangular clamping sealing area acts on the valve body, the valve body can be stably set on the base 1, thereby preventing the position of the valve body from being shifted during the valve body processing and reducing the occurrence of valve body processing errors.

[0066] The first pressing head 311, the second pressing head 321 and the third pressing head 322 are all made of rubber material. The first pressing head 311, the second pressing head 321 and the third pressing head 322 are made of rubber material, which can reduce the damage to the surface of the valve body. At the same time, when the valve body is being processed, the first pressing head 311, the second pressing head 321 and the third pressing head 322 made of rubber material can reduce the vibration generated by the processing, and have a buffering and vibration reduction effect.

[0067] In addition, the bottoms of the first pressing head 311, the second pressing head 321 and the third pressing head 322 are all provided with pressing convex heads, and a plurality of regularly arranged convex heads are provided on the pressing convex heads. The plurality of convex heads are regularly arranged to form a convex head surface, which can increase the friction force when contacting with the surface of the valve body, so that the first pressing head 311, the second pressing head 321 and the third pressing head 322 can all be stably pressed on the surface of the valve body.

[0068] The structure of this embodiment is similar to that of Example 2, except that in this embodiment, a plurality of support pads 11 are provided on the base 1. The support pads 11 support the valve body being processed, and the support pads 11 are made of rubber material, which has the advantages of buffering and vibration reduction. The support pads 11 are also installed on the base 1 in a detachable manner. Specifically, the support pads 11 are installed on the base 1 by bolts. The support pads 11 can adjust their position on the base 1 according to the specific shape of the valve body, so as to provide good support for the valve body. In this embodiment, three support pads 11 are respectively provided below the first pressure head assembly 3 and the second pressure head assembly 4, and the three support pads 11 are respectively supported at the three corners of the valve body.

[0069] In addition, a support bottom plate 12 is provided on the base 1, and a support positioning pin 121 is provided on the support bottom plate 12. The support positioning pin 121 can position the valve, and the valve body can be accurately seated on the base 1 according to the function of the support positioning pin 121, thereby improving the stable clamping speed of the valve body and further improving the processing efficiency of the valve body.

[0070] In the present application, when in use, the two valve bodies to be processed can be directly placed in a position that matches the first pressure head assembly 3 and the second pressure head assembly 4, and then the lifting and lowering plate 2 moves downward, so that the first pressure head assembly 3 and the second pressure head assembly 4 are respectively pressed on the two valve bodies. In the process of the first pressure head assembly 3 and the second pressure head assembly 4 being pressed on the valve body, since the first pressure rod 31 is hinged on the lifting and lowering plate 2, when the two ends of the first pressure rod 31 are subjected to uneven force, the first pressure rod 31 will rotate around the lifting and lowering plate 2, thereby automatically adjusting the angle of the first pressure rod 31. Similarly, when the two ends of the second pressure rod 32 are subjected to uneven force, the two ends of the first pressure rod 31 will also rotate around the end of the first pressure rod 31, automatically adjusting the angle, so that the two ends of the first pressure rod 31 and the second pressure rod 32 are subjected to even force. Therefore, in the present application, when the first pressing head assembly 3 and the second pressing head assembly 4 are pressed against the valve body, the first pressing head 311, the second pressing head 321 and the third pressing head 322 can automatically adjust the height and automatically adapt to the uneven condition of the valve body surface, thereby making the valve body clamped more firmly.

[0071] By using three clamping heads to act on the valve body, a single clamping head cooperates to form three force points, so that it can act on the valve body better, making the valve body clamped more stably.

[0072] In addition, when the lifting plate 2 moves downward, the first pressure head assembly 3 and the second pressure head assembly 4 are driven to move at the same time, so that the two valve bodies can be clamped at the same time, thereby improving the clamping efficiency of the valve body, and then improving the processing efficiency of the valve body. In addition, the first pressure head assembly 3 and the second pressure head assembly 4 cooperate with each other, so that the lifting plate 2 is more stably stressed, and the stability of the valve body after clamping is also improved.

[0073] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A hinged plate clamp, characterized in that: include: A base, on which a lifting and lowering pressure plate capable of being raised and lowered is arranged; The two ends of the lifting and lowering pressure plate are respectively provided with a first pressure head assembly and a second pressure head assembly; The first pressing head assembly and the second pressing head assembly each include a first pressing rod hinged on the lifting pressing plate, one end of the first pressing rod is provided with a first pressing head, the other end of the first pressing rod is hinged with a second pressing rod, and the two ends of the second pressing rod are respectively provided with a second pressing head and a third pressing head; When the valve body is pressed, both the first pressing rod and the second pressing rod swing in a plane perpendicular to the base.

2. The hinged plate clamp according to claim 1, characterized in that: Both end portions of the lifting and pressing plates are provided with first opening grooves, both sides of the first opening grooves are provided with first through holes, the first pressure rod is provided with a first hinged head matched with the first opening grooves, the first hinged head is provided with a first hinged hole matched with the first through hole, and the first pin shaft passes through the first through hole and the first hinged hole.

3. The hinged plate clamp according to claim 2, characterized in that: The first hinged joint is arranged at the middle position of the first pressure rod.

4. The hinged pressure plate clamp according to any one of claims 1 to 3, characterized in that: A second hinged joint is arranged at the end of the first pressing rod away from the first pressing head, a second hinged hole is penetrated through the second pressing rod, and the second hinged joint is inserted into the second hinged hole.

5. The hinged plate clamp according to claim 4, characterized in that: The second hinged joint is arranged at the middle position of the second pressing rod.

6. The hinged pressure plate clamp according to any one of claims 1 to 3, characterized in that: The first pressing head, the second pressing head and the third pressing head are all made of rubber material.

7. The hinged pressure plate clamp according to any one of claims 1 to 3, characterized in that: The bottoms of the first pressing head, the second pressing head and the third pressing head are all provided with pressing convex heads, and a plurality of regularly arranged convex heads are provided on the pressing convex heads.

8. The hinged pressure plate clamp according to any one of claims 1 to 3, characterized in that: A mounting bottom block is detachably provided at the center of the base, a mounting bottom hole is provided on the mounting bottom block, and a mounting bolt threadedly matched therewith is provided in the mounting bottom hole; a lifting through hole is provided on the lifting and lowering pressure plate, and the mounting bolt passes through the lifting through hole and is connected to the mounting bottom hole.

9. The hinged pressure plate clamp according to any one of claims 1 to 3, characterized in that: A plurality of support pads are arranged on the base.

10. The hinged plate clamp according to claim 9, characterized in that: A supporting bottom plate is arranged on the base, and a supporting positioning pin is arranged on the supporting bottom plate.

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