Stud bolt clamping jaw assembly, clamping device and punching equipment

Abstract

The invention relates to accessories or devices specially suitable for thread cutting machine tools or devices, in particular to a stud clamping jaw assembly, a clamping device and punching equipment. The double-end bolt clamping jaw assembly comprises a pressing beam, clamping rings are arranged at the two ends of the pressing beam respectively, each clamping ring is provided with an arc-shaped clamping opening used for being matched with a variable-diameter section of a double-end bolt, and a pressing driving device is connected to the pressing beam. The pressing driving device is provided with a fixed part and a telescopic output end capable of outputting linear motion relative to the fixed part, and the fixed part is provided with a connecting structure used for being fixedly connected with punching equipment. And the pressing beam can be close to the stud bolt under the action of the telescopic output end and is clamped on the variable-diameter section of the stud bolt through the clamping rings at the two ends of the pressing beam. When the double-end bolt clamping jaw assembly is used, the double-end bolt can be locked in the radial direction and the axial direction at the same time, and therefore the problem that when end punching is conducted on the double-end bolt, the double-end bolt is prone to axially moving is solved.

Description

Technical Field

[0001] The invention relates to an accessory or device specially suitable for a thread cutting machine tool or device, and in particular to a stud bolt clamping jaw assembly, a clamping device and a punching device. Background Art

[0002] like Figure 1 As shown, the stud bolt 6 generally refers to a threaded fastener with threads at both ends. Its production generally includes processes such as heat treatment, flaw detection, blanking, turning, numbering, processing hexagonal holes, thread rolling, surface treatment and packaging. The blade bolt is a type of stud bolt and is the core component connecting the fan blade and the hub. The material is generally 42CrMoA, the performance level is generally 10.9 and 12.9, the length is 300-1000mm, and it is divided into threaded sections 63 of unequal length at both ends, the middle polished rod 61, and the reducing section 62 located between the middle polished rod 61 and the threaded section 63 along the length direction, wherein the diameter of the threaded section 63 is greater than the diameter of the middle polished rod 61, and the reducing section 62 is conical, which plays a transitional role between the middle polished rod 61 and the threaded section 63. During installation, workers use tools such as hexagonal wrenches to screw the stud bolts into the fan blades through the hexagonal holes at the ends to fix the fan blades.

[0003] At present, in order to improve the degree of automation and thus improve the processing efficiency of stud bolts, horizontal punching equipment is used to punch the hexagonal holes at the ends of stud bolts. Before the horizontal punching equipment punches the stud bolt processing bar, the bare rod section of the stud bolt processing bar is clamped by a corresponding clamping device, and the stud bolt processing bar is punched in the axial direction to obtain the hexagonal hole at the end. However, due to the large pulling force of the punching head, the punching head may not be pulled out after the punching is completed, thereby causing the stud bolt to undergo axial displacement, affecting subsequent processing operations.

[0004] For example, a Chinese utility model patent with authorization announcement number CN220462509U and authorization announcement date of February 9, 2024 discloses a quick clamping mechanism for double-headed screw processing. The clamping mechanism includes a fixed ring body, in which extrusion blocks that can be controlled to move closer and farther away from each other are arranged. When in use, the double-headed screw can be inserted into the ring body so that it is located between the extrusion blocks, and the middle polished rod of the double-headed screw is fixed by the extrusion blocks, so that it can be processed accordingly. When the clamping mechanism is used for punching holes at the end of the double-headed screw, the above problems will exist. Summary of the invention

[0005] The object of the present invention is to provide a stud bolt clamp assembly to solve the problem that the stud screw rod is prone to axial movement when punching holes at the end of the stud bolt and removing the punch.

[0006] At the same time, the purpose of the present invention is also to provide a stud bolt clamping device and a stud bolt punching device using the above-mentioned stud bolt clamping jaw assembly.

[0007] In order to solve the above problems, the stud bolt clamp assembly of the present invention adopts the following technical solution: the stud bolt clamp assembly includes a clamping beam, and clamping rings are respectively provided at both ends of the clamping beam, and the clamping ring has an arc-shaped bayonet for cooperating with the reducing section of the stud bolt. A clamping drive device is connected to the clamping beam, and the clamping drive device has a fixed part and a telescopic output end that can output linear motion relative to the fixed part. The fixed part has a connecting structure for fixed connection with a punching device. The clamping beam can approach the stud bolt under the action of the telescopic output end and clamp on the reducing section of the stud bolt through the clamping rings at both ends.

[0008] Furthermore, the clamping ring has a tail rod and is connected to a tail handle through the tail rod. The tail handle is movably cooperated with the clamping beam guide along the length direction of the clamping beam. A connecting rod is connected to the tail handle. The other end of the connecting rod is connected to a tightening drive device. The tightening drive device has a fixed part and a telescopic part that can output linear motion. The telescopic part, the connecting rod and the corresponding tail handle form a double slider mechanism.

[0009] Furthermore, more than two clamping rings are arranged in the tail handle, and each clamping ring and its tail rod are arranged in a stacked manner, and as the distance from the clamping beam increases, the arc-shaped clamping opening of each clamping ring increases step by step.

[0010] Furthermore, the tail rod is a plate-shaped tail rod, each tail rod is parallel to each other in the stacking direction and cooperates with the tail handle guide through two sides, each tail rod is provided with a tiltable tongue piece in the middle of the tail end, and an inclined platform is provided on the inner wall of the tail handle in the stacking direction of the tail rod, and when the clamping ring moves relative to the tail handle to approach the tail handle, the inclined platform squeezes and fixes the tongue pieces on each tail rod.

[0011] Furthermore, the tongue piece is formed by arranging slits on both sides of the tail of the tail rod and the portion between the slits on both sides.

[0012] Furthermore, a stop protrusion is provided on one side of the inclined platform close to the clamping beam, and is used to stop and cooperate with the tail rod of the clamping ring with the smallest bayonet.

[0013] Furthermore, a guide bar is provided on one of the tail rod and the tail handle, and a guide groove corresponding to the guide bar is provided on the other, and the tail rod and the tail handle are guided and matched by the guide bar and the guide groove.

[0014] Furthermore, a telescopic connection mechanism that can be extended and retracted along the opening direction of the clamping ring is provided on the clamping beam, and the telescopic connection mechanism includes an inner connecting platform and an outer connecting sleeve, the clamping drive device is connected to the connecting platform, and the pressing drive device is connected to the connecting sleeve.

[0015] Furthermore, a clamping groove for clamping the middle rod body of the double-headed screw is arranged on the connecting platform.

[0016] Furthermore, a clamping groove or a clamping block is provided on the clamping ring for hooking and cooperating with the clamping ring on the other radial side of the double-start screw.

[0017] Beneficial effects: The stud bolt clamp assembly of the present invention is a pioneering invention. Specifically, the stud bolt clamp assembly of the present invention is provided with clamping rings at both ends of the clamping beam, and an arc-shaped clamping mouth for cooperating with the reducing section of the stud bolt is provided on the clamping ring, so that it can not only provide radial clamping force for the stud bolt to limit it, but also utilize the characteristic that the reducing section of the stud bolt is conical, and provide axial stopping force for the stud bolt through the clamping rings at both ends of the clamping beam. When in use, by connecting the fixed part of the clamping drive device with the punching equipment, the stud bolt can be locked radially and axially at the same time by outputting linear motion through its telescopic output end, thereby solving the problem of easy axial movement of the stud screw during the end punching operation of the stud bolt.

[0018] The stud bolt clamping device of the present invention adopts the following technical scheme: the stud bolt clamping device includes two stud bolt clamping jaw assemblies opposed to each other for cooperating to clamp the stud bolts, the stud bolt clamping jaw assembly includes a clamping beam, and clamping rings are respectively provided at both ends of the clamping beam, and the clamping ring has an arc-shaped bayonet for cooperating with the reducing section of the stud bolt. A clamping drive device is connected to the clamping beam, and the clamping drive device has a fixed part and a telescopic output end that can output linear motion relative to the fixed part, and the fixed part has a connecting structure for fixed connection with a punching device. The clamping beam can approach the stud bolt under the action of the telescopic output end and clamp on the reducing section of the stud bolt through the clamping rings at both ends thereof.

[0019] Furthermore, the clamping ring has a tail rod and is connected to a tail handle through the tail rod. The tail handle is movably cooperated with the clamping beam guide along the length direction of the clamping beam. A connecting rod is connected to the tail handle. The other end of the connecting rod is connected to a tightening drive device. The tightening drive device has a fixed part and a telescopic part that can output linear motion. The telescopic part, the connecting rod and the corresponding tail handle form a double slider mechanism.

[0020] Furthermore, more than two clamping rings are arranged in the tail handle, and each clamping ring and its tail rod are arranged in a stacked manner, and as the distance from the clamping beam increases, the arc-shaped clamping opening of each clamping ring increases step by step.

[0021] Furthermore, the tail rod is a plate-shaped tail rod, each tail rod is parallel to each other in the stacking direction and cooperates with the tail handle guide through two sides, each tail rod is provided with a tiltable tongue piece in the middle of the tail end, and an inclined platform is provided on the inner wall of the tail handle in the stacking direction of the tail rod, and when the clamping ring moves relative to the tail handle to approach the tail handle, the inclined platform squeezes and fixes the tongue pieces on each tail rod.

[0022] Furthermore, the tongue piece is formed by arranging slits on both sides of the tail of the tail rod and the portion between the slits on both sides.

[0023] Furthermore, a stop protrusion is provided on one side of the inclined platform close to the clamping beam, and is used to stop and cooperate with the tail rod of the clamping ring with the smallest bayonet.

[0024] Furthermore, a guide bar is provided on one of the tail rod and the tail handle, and a guide groove corresponding to the guide bar is provided on the other, and the tail rod and the tail handle are guided and matched by the guide bar and the guide groove.

[0025] Furthermore, a telescopic connection mechanism that can be extended and retracted along the opening direction of the clamping ring is provided on the clamping beam, and the telescopic connection mechanism includes an inner connecting platform and an outer connecting sleeve, the clamping drive device is connected to the connecting platform, and the pressing drive device is connected to the connecting sleeve.

[0026] Furthermore, a clamping groove for clamping the middle rod body of the double-headed screw is arranged on the connecting platform.

[0027] Furthermore, a clamping groove or a clamping block is provided on the clamping ring for hooking and cooperating with the clamping ring on the other radial side of the double-start screw.

[0028] Beneficial effects: The stud bolt clamping device of the present invention is a pioneering invention. Specifically, in the stud bolt clamping device of the present invention, the stud bolt clamping claw assembly is provided with clamping rings at both ends of the clamping beam, and an arc-shaped bayonet for cooperating with the reducing section of the stud bolt is provided on the clamping ring. Therefore, it can not only provide radial clamping force for the stud bolt to limit its position, but also utilize the characteristic that the reducing section of the stud bolt is conical, and provide axial stopping force for the stud bolt through the clamping rings at both ends of the clamping beam. When in use, by connecting the fixed part of the clamping drive device with the punching equipment, the stud bolt can be locked radially and axially at the same time by outputting linear motion through its telescopic output end, thereby solving the problem of easy axial movement of the stud screw during the end punching operation of the stud bolt.

[0029] The stud bolt punching equipment of the present invention adopts the following technical scheme: the stud bolt punching equipment includes an equipment body, on which a stud bolt clamping device is arranged, the stud bolt clamping device includes two stud bolt clamping jaw assemblies opposed to each other for cooperating and clamping the stud bolts, the stud bolt clamping jaw assembly includes a clamping beam, both ends of the clamping beam are respectively provided with clamping rings, the clamping ring has an arc-shaped bayonet for cooperating with the reducing section of the stud bolt, a clamping drive device is connected to the clamping beam, the clamping drive device has a fixed part and a telescopic output end that can output linear motion relative to the fixed part, the fixed part has a connecting structure for fixedly connecting to the punching equipment, the clamping beam can approach the stud bolt under the action of the telescopic output end and clamp on the reducing section of the stud bolt through the clamping rings at both ends thereof.

[0030] Furthermore, the clamping ring has a tail rod and is connected to a tail handle through the tail rod. The tail handle is movably cooperated with the clamping beam guide along the length direction of the clamping beam. A connecting rod is connected to the tail handle. The other end of the connecting rod is connected to a tightening drive device. The tightening drive device has a fixed part and a telescopic part that can output linear motion. The telescopic part, the connecting rod and the corresponding tail handle form a double slider mechanism.

[0031] Furthermore, more than two clamping rings are arranged in the tail handle, and each clamping ring and its tail rod are arranged in a stacked manner, and as the distance from the clamping beam increases, the arc-shaped clamping opening of each clamping ring increases step by step.

[0032] Furthermore, the tail rod is a plate-shaped tail rod, each tail rod is parallel to each other in the stacking direction and cooperates with the tail handle guide through two sides, each tail rod is provided with a tiltable tongue piece in the middle of the tail end, and an inclined platform is provided on the inner wall of the tail handle in the stacking direction of the tail rod, and when the clamping ring moves relative to the tail handle to approach the tail handle, the inclined platform squeezes and fixes the tongue pieces on each tail rod.

[0033] Furthermore, the tongue piece is formed by arranging slits on both sides of the tail of the tail rod and the portion between the slits on both sides.

[0034] Furthermore, a stop protrusion is provided on one side of the inclined platform close to the clamping beam, and is used to stop and cooperate with the tail rod of the clamping ring with the smallest bayonet.

[0035] Furthermore, a guide bar is provided on one of the tail rod and the tail handle, and a guide groove corresponding to the guide bar is provided on the other, and the tail rod and the tail handle are guided and matched by the guide bar and the guide groove.

[0036] Furthermore, a telescopic connection mechanism that can be extended and retracted along the opening direction of the clamping ring is provided on the clamping beam, and the telescopic connection mechanism includes an inner connecting platform and an outer connecting sleeve, the clamping drive device is connected to the connecting platform, and the pressing drive device is connected to the connecting sleeve.

[0037] Furthermore, a clamping groove for clamping the middle rod body of the double-headed screw is arranged on the connecting platform.

[0038] Furthermore, a clamping groove or a clamping block is provided on the clamping ring for hooking and cooperating with the clamping ring on the other radial side of the double-start screw.

[0039] Beneficial effects: The stud bolt punching device of the present invention is an improved invention. Specifically, in the stud bolt punching device of the present invention, the stud bolt clamping claw assembly of the stud bolt clamping device is provided with clamping rings at both ends of the clamping beam, and an arc-shaped bayonet for cooperating with the reducing section of the stud bolt is provided on the clamping ring. Therefore, it can not only provide radial clamping force for the stud bolt to limit it, but also utilize the characteristic that the reducing section of the stud bolt is conical, and provide axial stopping force for the stud bolt through the clamping rings at both ends of the clamping beam. When in use, by connecting the fixed part of the clamping drive device with the punching device, the stud bolt can be locked radially and axially at the same time by outputting linear motion through its telescopic output end, thereby solving the problem of easy axial movement of the stud screw during the end punching operation of the stud bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of a stud bolt; Figure 2 It is a diagram of a use state of an embodiment of the stud bolt clamping device of the present invention; Figure 3 yes Figure 2 A schematic diagram of the structure of the stud bolt clamping device in another perspective of the use state; Figure 4 yes Figure 2 A schematic diagram of the structure of the compression beam in FIG. Figure 5 yes Figure 2 A cross-sectional view of the caudal peduncle in; Figure 6 yes Figure 2 Stereoscopic view of the caudal peduncle in; Figure 7 yes Figure 2 A schematic diagram of the structure of the snap ring; Figure 8 yes Figure 2 A schematic diagram of a clamping ring clamping a stud bolt; Fig. 9It is a schematic diagram of the hook-and-hang cooperation of the clamping rings of the two stud bolt clamping jaw assemblies of the stud bolt clamping device; Fig.10 yes Figure 1 Schematic diagram of the cooperation between the compression beam and the middle rod of the stud bolt; Fig.11 yes Figure 2 Schematic diagram of the use status of the stud bolt clamping device on the punching equipment.

[0041] In the figure: 1, connecting platform; 2, connecting sleeve; 3, connecting rod; 4, clamping drive device; 5, tightening drive device; 6, double-headed screw; 7, tail handle; 8, snap ring; 9, punching mechanism; 10, punching and pushing mechanism; 12, cross arm; 13, cross arm connecting ear; 14, clamping groove; 15, platform connecting seat; 16, avoidance; 17, guide hole; 21, sleeve connecting seat; 61, middle light rod; 62, reducing section; 63, threaded section; 71, tail handle plug hole; 72, guide groove; 73, inclined surface; 74, stop protrusion; 75, inclined platform; 81, tail rod; 82, ring body; 83, arc-shaped bayonet; 84, clamping groove; 85, clamping block; 86, slit. DETAILED DESCRIPTION

[0042] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0043] like Figure 1 As shown in the figure, as a typical structure of the stud bolt 6, it includes threaded sections 63 at both ends, an intermediate rod body 61 in the middle, and a reducing section 62 connected between the end of the intermediate rod body 61 and the corresponding threaded section 63. The diameter of the intermediate rod body 61 is smaller than the diameter of the threaded section 63, and the reducing section 62 plays a role of transition between the threaded section and the intermediate rod body, so it is a frustum-shaped structure, and the diameter of the end close to the threaded section 63 is larger than the diameter of the end close to the intermediate rod body 61. Based on the above typical structure of the stud bolt, the present invention uses the shape of the reducing section 62 to change the way of fixing the intermediate rod body 61 of the stud bolt in the traditional process to fixing the reducing section 62, and by radially constraining the reducing sections at both ends respectively, the axial constraint can be achieved at the same time, thereby achieving simultaneous axial and radial fixation of the stud bolt, thereby preventing the stud bolt from axial displacement due to axial force during processing.

[0044] Based on the above inventive concept, a basic implementation of the stud bolt clamp assembly of the present invention is as follows: Figure 2-3As shown, the stud bolt clamp assembly includes a clamping beam, and a clamping ring 8 is provided at both ends of the clamping beam. The ring body 82 of the clamping ring 8 has an arc-shaped bayonet 83 for cooperating with the diameter-reducing section of the stud bolt 6. By providing the clamping ring 8 at both ends of the clamping beam, when the clamping beam is close to the stud bolt 6, the bayonet of the clamping ring 8 at both ends can be clamped on the diameter-reducing section 62 at both ends of the stud bolt 6. At this time, only two stud bolt clamping jaw assemblies are required to clamp the diameter-reducing section of the stud bolt 6 from both radial sides of the stud bolt, so as to achieve simultaneous axial and radial locking of the stud bolt 6. It can be seen from the above description that the arc-shaped bayonet 83 of the clamping ring 8 plays a role in the working process, and the shape of its outer part is irrelevant. Therefore, in a specific embodiment, the clamping ring as a whole can adopt any shape under the condition that the clamping ring has a suitable arc-shaped bayonet 83.

[0045] In order to realize the automatic clamping of the stud bolts 6, a clamping drive device 4 is connected to the clamping beam. The clamping drive device 4 has a fixed part and a telescopic output end that can output linear motion relative to the fixed part. In some cases, it can adopt a cylinder, a hydraulic cylinder, etc., or a motor; the fixed part has a connecting structure for fixed connection with the punching equipment. When in use, the clamping drive device 4 can be fixedly installed on the frame of the punching equipment through the connecting structure of the fixed part, and the clamping beam is driven to move by the linear motion of the telescopic output end. Of course, the movement should be perpendicular to the clamping beam, and when it is along the opening direction of the bayonet of the clamping ring 8, under the action of the clamping drive device 4, the clamping beam can approach the stud bolt 6, and be clamped on the reducing section of the stud bolt 6 through the clamping ring 8 provided at its end, so as to realize the clamping of the stud bolt 6; of course, when the clamping beam moves in the opposite direction under the action of the clamping drive device 4, the clamping rings 8 at both ends will leave the stud bolt and release the corresponding stud bolt.

[0046] Based on the above basic implementation, as a preferred implementation, Figure 7 , 8 As shown, a tail rod 81 is arranged on the ring body 82 of the clamping ring 8, and the tail rod 81 and the connected ring body 82 together form an L-shaped structure; a tail handle 7 of the clamping ring 8 is arranged on the clamping beam, wherein the tail handle 7 is reciprocally mounted on the clamping beam along the length direction of the clamping beam. Figure 4In the embodiment shown, the clamping beam includes three parts, namely, a connecting platform 1 in the middle and two cross arms 12 fixed on the left and right sides of the connecting platform 1, wherein each cross arm 12 is provided with a cross arm connecting ear 13 on the side close to the connecting platform 1 and forms an L shape with the cross arm connecting ear, and the cross arm 12 is detachably connected to the connecting platform 1 through its cross arm connecting ear 13, and a guide hole 17 is provided at the end of each cross arm 12 away from the connecting platform 1, and the tail handle 7 is inserted into the guide hole of the corresponding cross arm, so as to cooperate with the clamping beam guide. It should be particularly noted here that in Figure 4 In the embodiment shown, the clamping beam is configured as a split structure combining the connecting platform 1 and the cross arm 12 in order to simplify the production process of the clamping beam and make it easier to process. In some other embodiments, the clamping beam can also be configured as an integrated structure. In this case, although the manufacture of the clamping beam will become complicated, its installation will become simpler.

[0047] like Figure 2 , 3 As shown, the tail handle 7 is connected with a connecting rod 3, and the other end of the connecting rod 3 is connected with a tightening drive device 5. The tightening drive device 5 has a fixed part and a telescopic part that can output linear motion. In some cases, it can be a cylinder, a hydraulic cylinder, etc., or a motor. The telescopic part, the connecting rod 3 and the corresponding tail handle 7 form a double slider mechanism. Figure 5 , 6 As shown, in order to connect with the connecting rod 3, a hinged connection seat is provided on the tail handle 7. In order to have a more compact structure, a relief opening 16 is provided on the side wall of the cross arm 12 near the connecting rod. When the telescopic part of the tightening driving device 5 moves linearly, the tail handle 7 will synchronously reciprocate along the length direction of the cross arm. Through this structural design, the clamping ring 8 can have a wider working range to adapt to the clamping of stud bolts of different lengths.

[0048] exist Figure 5 , 6 In the embodiment shown, a tail handle insertion hole 71 is provided at one end of the tail handle 7 away from the middle of the clamping beam, and the tail rod 81 of the clamping ring 8 is inserted into the tail handle insertion hole 71 of the corresponding tail handle. Figure 5 , 6 In the illustrated embodiment, the clamping ring 8 is a plate-shaped clamping ring, and its tail rod 81 is also plate-shaped, and both are formed by bending the same base material; three clamping rings are arranged in the tail handle socket 71, and the three clamping rings are stacked, and as the distance from the clamping beam increases, the arc-shaped clamping opening 83 of each clamping ring 8 increases step by step, so as to be able to perform multiple clamping on the reducing section at the same end of the stud bolt 6. It can be seen that in some other embodiments, it is possible to set the number of clamping rings 8 to two or more.

[0049] Regarding the cooperation between the tail rod 81 and the tail handle 7, it should be easy for those skilled in the art to understand that the two can be fixedly cooperated. When the tail handle 7 moves under the action of the tightening drive device 5, the three snap rings 8 will act synchronously and finally act synchronously on the stud screw 6. However, although the above method is feasible, it will put forward strict requirements on the bayonet size of each snap ring 8, and it can only be used for stud bolts of a certain diameter specification. In order to solve this problem, the stud bolt clamping jaw assembly of the present invention provides the following preferred implementation: the tail rod 81 of the snap ring 8 and the corresponding tail handle 7 are guided to cooperate, and the direction of the guiding cooperation here is the length direction of the tail handle 7. Specifically, a guide groove 72 is provided on the opposite side wall of the tail handle insertion hole 71 of the tail handle 7, and a guide bar 87 is provided on the corresponding side of the tail rod 81. Through the cooperation of the guide bar and the corresponding guide groove, the above-mentioned guiding cooperation between the tail rod 81 and the tail handle 7 is realized. Of course, in some other embodiments, the positions of the guide bar and the guide groove can be interchanged, which should be understandable to those skilled in the art and will not be repeated here.

[0050] In order to achieve locking of each snap ring 8 in place, a tongue piece that can be tilted is provided in the middle of the tail end of each tail rod 81. In the stacking direction of the tail rod 81, a ramp 75 is provided on the inner wall of the tail handle 7. When the snap ring moves relative to the tail handle to approach the tail handle, the inclined surface 73 on the ramp 75 squeezes and fixes the tongue pieces on each tail rod. On this basis, as a preferred embodiment, the tongue piece is formed by providing slits 86 on both sides of the tail of the tail rod 81, and is formed by the part between the slits 86 on both sides. Of course, in some other embodiments, the tongue piece can also be a tongue piece structure that is suspended separately at the rear end of the tail rod 81 and protrudes backward. In order to achieve reliable tightening of the snap ring, in some preferred embodiments, a stop protrusion 74 for cooperating with the tail rod stop of the snap ring with the smallest bayonet is provided on one side of the ramp 75 close to the clamping beam. The stop protrusion can be as follows Figure 5 As shown, it can be directly arranged on the inclined platform 75, or it can be independently arranged in the tail handle insertion hole of the tail handle relative to the inclined platform.

[0051] As a preferred embodiment, a connecting sleeve 2 is also provided on the connecting platform 1 of the clamping beam, and the connecting sleeve 2 can move relative to the connecting platform 1 along the opening direction of the clamping ring, so that the two together constitute a telescopic connection mechanism, wherein the above-mentioned clamping drive device 4 is connected to the connecting platform 1, and the pressing drive device 5 is connected to the connecting sleeve 2. In order to achieve connection with the clamping drive device and the pressing drive device, a platform connecting seat 15 is provided on one side of the connecting platform 1, and a sleeve connecting seat 21 is provided on the connecting sleeve 2. In order to ensure the compactness of the structure, the above-mentioned platform connecting seat 15 and sleeve connecting seat 21 are respectively provided on the opposite sides of the connecting sleeve and the connecting seat.

[0052] Based on the above preferred implementation, as a more preferred implementation, Fig.10 As shown, a clamping groove 14 for clamping the intermediate rod body of the stud screw is provided on the connecting platform 1. The clamping groove 14 can be set as a V-shaped groove or an arc groove as required, and can be synchronized with the clamping ring 8 to clamp the stud bolt 6, so as to achieve further reliable clamping and fixing of the stud bolt. In this regard, those skilled in the art should be able to understand that the clamping groove 14 does not need to be bound to the connecting platform, that is, in some other embodiments, even if the connecting platform does not exist, the clamping groove can be directly provided on the clamping beam, and the above-mentioned effect can also be achieved in this case.

[0053] Since the double-headed screw clamping jaw assembly of the present invention is used in pairs when in use, as a preferred embodiment, Fig.10 As shown, a clamping groove 84 is provided on the clamping ring 8 for hooking and cooperating with the clamping ring on the other radial side of the double-headed screw. Of course, the clamping groove can also be replaced by a clamping block 85. Figure 8 , 9 In the illustrated embodiment, a clamping groove is provided at one end of the clamping ring, and a clamping block is provided at the other end. This arrangement is also feasible.

[0054] When the stud bolt clamp assembly of the present invention is used to fix the stud bolt, Figure 2 , 3 As shown in Figures 1 and 11, a pair of clamping jaw assemblies can be arranged up and down, and the clamping drive device 4 and the jacking drive device 5 are fixed on a frame respectively. When the stud bolt 6 to be processed is sent between the two, one of the clamping jaw assemblies can be started first, and its clamping beam approaches the stud bolt 6 along the radial direction of the stud bolt 6 under the action of the clamping drive device 4, and the jacking drive device 5 drives the tail handle of its clamping ring 8 to approach the end of the stud screw through the connecting rod 3, as shown in Figures 1 and 11. Figure 5 , 8 As shown in the figure, during this process, the three clamping rings 8 will reach the working position in sequence, and will be tightly attached to the corresponding position of the reducing section of the stud bolt 6 and generate pressure. As the tail handle 7 continues to move, the stop protrusion in the tail handle will push the Figure 8 The tail rod of the lowest snap ring shown in the figure, and the ramp 75 will cause the tongue pieces on the tail rods of each snap ring 8 to tilt up and squeeze together, thereby preventing any snap ring from retreating; the working process of the other clamping jaw assembly is the same and will not be repeated here. When the two clamping jaw assemblies are clamped in place, the hook structures on the snap rings of the two clamping jaw assemblies are hooked together. At this time, even if the reducing section of the double-headed screw will generate a force to drive the two to expand outward, the two hooked snap rings will firmly bind them to avoid loosening. At this time, the punching work can be carried out by the punching mechanism 9 of the punching equipment and the punching push mechanism 10 arranged opposite to the punching mechanism 9.

[0055] Embodiments of the stud bolt clamping device of the present invention: The stud bolt clamping device of the present invention comprises two stud bolt clamping jaw assemblies of the present invention. The two clamping jaw assemblies are opposed to each other when in use, and will not be described in detail here.

[0056] Embodiments of the stud bolt punching device of the present invention: The stud bolt punching device of the present invention comprises a device body and a stud bolt clamping device of the present invention arranged on the device body, wherein the structure of the device body is prior art, and the structure of the clamping device has been described above and will not be repeated here.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A stud bolt clamp assembly, characterized in that: It includes a clamping beam, both ends of which are respectively provided with clamping rings, and the clamping rings have an arc-shaped clamping socket for cooperating with the reducing section of the stud bolt. A clamping drive device is connected to the clamping beam, and the clamping drive device has a fixed part and a telescopic output end that can output linear motion relative to the fixed part. The fixed part has a connecting structure for fixed connection with a punching device. Under the action of the telescopic output end, the clamping beam can approach the stud bolt and be clamped on the reducing section of the stud bolt through the clamping rings at both ends.

2. The stud bolt clamp assembly according to claim 1, characterized in that: The clamping ring has a tail rod and is connected to a tail handle through the tail rod. The tail handle is movably matched with the clamping beam guide along the length direction of the clamping beam. A connecting rod is connected to the tail handle. The other end of the connecting rod is connected to a tightening drive device. The tightening drive device has a fixed part and a telescopic part that can output linear motion. The telescopic part, the connecting rod and the corresponding tail handle form a double slider mechanism.

3. The stud bolt clamp assembly according to claim 2, characterized in that: More than two clamping rings are arranged in the tail handle, and the clamping rings and their tail rods are arranged in a stacked manner. As the distance from the clamping beam increases, the arc-shaped clamping openings of the clamping rings increase step by step.

4. The stud bolt clamp assembly according to claim 3, characterized in that: The tail rod is a plate-shaped tail rod, each tail rod is parallel to each other in the stacking direction and cooperates with the tail handle guide through two sides. Each tail rod is provided with a tiltable tongue piece in the middle of the tail end. In the stacking direction of the tail rod, an inclined platform is provided on the inner wall of the tail handle. When the clamping ring moves relative to the tail handle to approach the tail handle, the inclined platform squeezes and fixes the tongue pieces on each tail rod.

5. The stud bolt clamp assembly according to claim 4, characterized in that: The tongue piece is formed by arranging slits on both sides of the tail of the tail rod and the portion between the slits on both sides.

6. The stud bolt clamp assembly according to claim 4 or 5, characterized in that: A stop protrusion for stoppering and cooperating with the tail rod of the clamping ring with the smallest bayonet is arranged on one side of the inclined platform close to the clamping beam.

7. The stud bolt clamp assembly according to claim 4 or 5, characterized in that: A guide bar is arranged on one of the tail rod and the tail handle, and a guide groove corresponding to the guide bar is arranged on the other, and the tail rod and the tail handle are guided and matched by the guide bar and the guide groove.

8. The stud bolt clamp assembly according to any one of claims 2 to 5, characterized in that: A telescopic connection mechanism that is telescopic and retractable along the opening direction of the clamping ring is arranged on the clamping beam, and the telescopic connection mechanism includes an inner connecting platform and an outer connecting sleeve, the clamping drive device is connected to the connecting platform, and the pressing drive device is connected to the connecting sleeve.

9. The stud bolt clamp assembly according to claim 8, characterized in that: The connecting platform is provided with a clamping groove for clamping the middle rod body of the double-headed screw.

10. The stud bolt clamp assembly according to any one of claims 2 to 5, characterized in that: The clamping ring is provided with a clamping groove or a clamping block for hooking and cooperating with the clamping ring on the other radial side of the double-start screw.

11. A stud bolt clamping device, characterized in that: It comprises two stud bolt clamping jaw assemblies as described in any one of claims 1 to 10, and the two stud bolt clamping devices are opposite to each other and are used for clamping the stud bolts in cooperation.

12. A stud bolt punching device, comprising a device body, on which a stud bolt clamping device is arranged, characterized in that: The stud bolt clamping device is the stud bolt clamping device according to claim 11.

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