Chamfering clamping mechanism for production of Henjie ring

Abstract

The utility model discloses a chamfer clamping mechanism for production of Henjie rings, and relates to the technical field of Henjie rings, the chamfer clamping mechanism comprises a hydraulic clamp and a driving piece symmetrically arranged at one end of the hydraulic clamp, a supporting point is formed from the middle of a supporting block through a limiting pin, so that a clamping spring can drive one end of the supporting block to be close to each other to form clamping, and the other end of the supporting block is clamped. At the moment, the semicircular clamping groove and the cambered surface chamfering part on the circular clamping groove are spliced into a complete circular groove body to provide a placement position for the metal circular pipe, the lower end of the strap is in contact with the cambered surface chamfering part during extrusion, and the inner wall of the cambered surface chamfering part forms pressure towards the central axis on the outer side of the lower end of the strap, so that the metal circular pipe is clamped. By means of the structure, the lower end of the Jiangling ring is shrunk, so that under the condition that the pressure is too large, the lower end of the Jiangling ring has a certain inward shrunk space, the connecting firmness between the Jiangling ring and the metal round pipe is further improved, meanwhile, the swelling phenomenon caused by too large pressure is effectively avoided, and great convenience is provided for assembling work.

Description

Technical Field

[0001] The utility model relates to the technical field of Hejie ring production, in particular to a chamfering clamping mechanism for Hejie ring production. Background Art

[0002] A Hejie ring is a metal product used to connect two metal round tubes on mechanical or electrical equipment, especially refrigeration equipment. Hydraulic clamps are often used when connecting metal round tubes together through a Hejie ring.

[0003] When the hydraulic clamp is extruding the Jiejie ring and the metal round tube, the clamping mechanism on it is provided with a placement groove so that the Jiejie ring and the metal round tube can be placed in the clamp. However, the placement groove provided on the support block on the clamping mechanism of some existing hydraulic clamps is often in the shape of an integrated through-type arc groove. This makes the end face of the support block form horizontal and vertical extrusion on the Jiejie ring when the Jiejie ring and the metal round tube are extruded and connected. When the pressure is too large, the Jiejie ring is prone to bulging at the connecting end of the Jiejie ring and the metal round tube, causing many inconveniences to the assembly work. Utility Model Content

[0004] The purpose of the utility model is to provide a chamfering clamping mechanism for producing a Hejie ring, so as to solve the technical problems mentioned in the above background technology.

[0005] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0006] A chamfering clamping mechanism for producing a Hejie ring, comprising a hydraulic clamp and a driving member symmetrically arranged at one end of the hydraulic clamp;

[0007] A pressing member and a clamping member are respectively arranged inside the two groups of driving members, and a clamping structure is arranged on the end surface of the clamping member opposite to the pressing member.

[0008] The clamping structure includes symmetrically arranged support blocks, semicircular clamping grooves provided on the end faces of the support blocks close to each other, arc chamfered portions provided on the top of the support blocks and connected to the semicircular clamping grooves, side grooves provided on the end faces of the support blocks close to each other, and the side grooves are located at one end away from the semicircular clamping grooves, a clamping spring provided between the side grooves, and a fixing groove provided on the top of the support blocks, and the fixing groove is located between the semicircular clamping grooves and the side grooves;

[0009] A fixing plate is arranged on the top of the clamping member, and the fixing plate is located above the supporting block. Limiting pins are symmetrically arranged on the fixing plate, and the limiting pins penetrate through the fixing grooves.

[0010] As a further solution of the utility model: a protective plate is symmetrically arranged at the edge of one end of the hydraulic pliers where the driving member is provided, and the protective plate is on the outer side of the driving member.

[0011] As a further solution of the utility model: the end face of the clamping member provided with the clamping structure is provided with a buffer groove, a flat-headed rod is provided inside the buffer groove, and the flat-headed rod is located below the supporting block, and a buffer spring is sleeved on the outer side of the flat-headed rod.

[0012] As a further solution of the utility model: a return spring for driving the press-down piece and the clamping piece to return to their original position is arranged between the press-down piece and the fixing plate.

[0013] As a further solution of the utility model: a guide groove is provided on the top of the fixing plate, and the guide groove is located between the limit pin and the return spring, and a safety column matching the guide groove is provided on the end surface of the clamping member relative to the pressing member.

[0014] As a further solution of the utility model: the pressing member and the clamping member are slidably connected via a sliding rod.

[0015] Beneficial effects of the utility model:

[0016] The utility model forms a support point from the middle of the support block through a limit pin, so that the clamping spring can drive one end of the support block to move closer to each other to form a clamp. At this time, the semicircular clamping groove and the arc chamfered portion thereon are spliced ​​into a complete circular groove body, providing a placement position for the metal round tube. When extruding, the lower end of the Hejie ring contacts the arc chamfered portion, and the inner wall of the arc chamfered portion forms pressure toward the central axis on the outer side of the lower end of the Hejie ring, causing the lower end of the Hejie ring to shrink. Therefore, when the pressure is too high, there is a certain space for the lower end of the Hejie ring to shrink inwardly, which further improves the connection firmness between the Hejie ring and the metal round tube and effectively avoids the phenomenon of bulging caused by excessive pressure, providing great convenience for assembly work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional schematic diagram of the whole device in the utility model;

[0019] Figure 2 It is a three-dimensional schematic diagram of the clamping mechanism in the utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of the support block in the utility model.

[0021] In the figure: 1. hydraulic pliers; 2. pressing piece; 3. clamping piece; 4. protective plate; 5. supporting block; 6. semicircular clamping groove; 7. arc chamfered part; 8. side groove; 9. clamping spring; 10. fixing groove; 11. fixing plate; 12. limit pin; 13. buffer groove; 14. flat head rod; 15. buffer spring; 16. reset spring; 17. guide groove; 18. safety column; 19. slide rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-3 As shown, a chamfering clamping mechanism for the production of Hejie rings includes a hydraulic clamp 1 and a driving member symmetrically arranged at one end of the hydraulic clamp 1. A protective plate 4 is symmetrically arranged at the edge of one end of the hydraulic clamp 1 where the driving member is arranged, and the protective plate 4 is on the outside of the driving member. The protective plate 4 can cover the movement area of ​​the driving member when it is opened and closed, so as to avoid pinching the staff during use;

[0024] A pressing member 2 and a clamping member 3 are arranged opposite to each other inside the two groups of driving members, and a clamping structure is arranged on the end surface of the clamping member 3 relative to the pressing member 2. A reset spring 16 for driving the pressing member 2 and the clamping member 3 to reset is arranged between the pressing member 2 and the fixing plate 11. A guide groove 17 is opened on the top of the fixing plate 11, and the guide groove 17 is located between the limit pin 12 and the reset spring 16. A safety column 18 matching the guide groove 17 is arranged on the end surface of the clamping member 3 relative to the pressing member 2. A sliding connection is formed between the pressing member 2 and the clamping member 3 through a sliding rod 19. When the fastener ring and the metal round pipe need to be assembled, the hydraulic pliers 1 can be The driving member controls the pressing member 2 and the clamping member 3 to move relative to each other, at which time the return spring 16 is compressed, thereby causing extrusion between the Jiehuan ring and the metal round tube to achieve the purpose of assembly. The slide bar 19 guides and limits the movement of the pressing member 2 and the clamping member 3. When the pressing member 2 and the clamping member 3 are misaligned, the safety column 18 cannot be normally inserted into the guide groove 17, which hinders the movement of the two, thereby reminding the staff to perform maintenance to avoid damage to the device and the product. After the processing is completed, the return spring 16 can help the pressing member 2 and the clamping member 3 to reset under the action of the elastic force, which is convenient for the next use;

[0025] The clamping structure includes symmetrically arranged support blocks 5, semicircular clamping grooves 6 provided on the end faces of the support blocks 5 close to each other, arc chamfered portions 7 provided on the top of the support blocks 5 and connected to the semicircular clamping grooves 6, side grooves 8 provided on the end faces of the support blocks 5 close to each other, and the side grooves 8 are located at the end away from the semicircular clamping grooves 6, a clamping spring 9 provided between the side grooves 8, a fixing groove 10 provided on the top of the support block 5, and the fixing groove 10 is located between the semicircular clamping grooves 6 and the side grooves 8, a fixing plate 11 is provided on the top of the clamping member 3, and the fixing plate 11 is located above the support block 5, and limit pins 12 are symmetrically provided on the fixing plate 11, and the limit pins 12 penetrate the fixing grooves 10, when the fastener and the metal round tube are assembled, the limit pins 12 are used to fix them from the middle position of the support block 5, thereby fixing the support block 5. The movement forms a limit, and forms a support point structure. The support block 5 can swing around the limit pin 12, so that the clamping spring 9 can drive one end of the support block 5 to move closer to each other to form a clamp. The two groups of support blocks 5 are close together, and the semicircular clamping grooves 6 and the arc chamfered parts 7 thereon are spliced ​​into a complete circular groove body, providing a placement position for the metal round tube. When the Hejie ring and the metal round tube are squeezed, the lower end of the Hejie ring contacts the arc chamfered part 7, and the inner wall of the arc chamfered part 7 forms a pressure toward the central axis on the outer side of the lower end of the Hejie ring, causing the lower end of the Hejie ring to shrink. Therefore, when the pressure is too high, there is a certain space for the lower end of the Hejie ring to shrink inwardly, which further improves the connection firmness between the Hejie ring and the metal round tube while effectively avoiding the phenomenon of bulging caused by excessive pressure.

[0026] In the present embodiment, specifically, the clamping member 3 is provided with a buffer groove 13 on the end face of the clamping structure, a flat-headed rod 14 is arranged inside the buffer groove 13, and the flat-headed rod 14 is located below the support block 5, and a buffer spring 15 is sleeved on the outer side of the flat-headed rod 14. When the support block 5 is excessively squeezed by the fast ring, the support block 5 causes the flat-headed rod 14 to squeeze the buffer spring 15 downward, thereby ensuring that the support block 5 can move downward a certain distance to avoid excessive squeezing and damage to the device.

[0027] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A chamfering clamping mechanism for producing a Hejie ring, comprising a hydraulic clamp (1) and a driving member symmetrically arranged at one end of the hydraulic clamp (1); characterized in that: A pressing member (2) and a clamping member (3) are respectively arranged inside the two groups of driving members in a manner opposite to each other, and a clamping structure is arranged on the end surface of the clamping member (3) opposite to the pressing member (2); The clamping structure comprises symmetrically arranged support blocks (5), semicircular clamping grooves (6) provided on the end surfaces of the support blocks (5) close to each other, an arc chamfered portion (7) provided on the top of the support blocks (5) and connected to the semicircular clamping grooves (6), side grooves (8) provided on the end surfaces of the support blocks (5) close to each other, and the side grooves (8) are located at one end away from the semicircular clamping grooves (6), a clamping spring (9) provided between the side grooves (8), and a fixing groove (10) provided on the top of the support blocks (5), and the fixing groove (10) is located between the semicircular clamping grooves (6) and the side grooves (8); A fixing plate (11) is arranged on the top of the clamping member (3), and the fixing plate (11) is located above the supporting block (5). Limiting pins (12) are symmetrically arranged on the fixing plate (11), and the limiting pins (12) penetrate the fixing groove (10).

2. The chamfering clamping mechanism for producing Hejie rings according to claim 1 is characterized in that: The hydraulic pliers (1) are symmetrically provided with a protective plate (4) at the edge of one end where the driving member is provided, and the protective plate (4) is on the outer side of the driving member.

3. The chamfering clamping mechanism for producing Hejie rings according to claim 1 is characterized in that: The clamping member (3) is provided with a clamping structure and has an end surface with a buffer groove (13). A flat-headed rod (14) is arranged inside the buffer groove (13). The flat-headed rod (14) is located below the support block (5). A buffer spring (15) is sleeved on the outer side of the flat-headed rod (14).

4. The chamfering clamping mechanism for producing Hejie rings according to claim 1 is characterized in that: A return spring (16) for driving the press-down member (2) and the clamping member (3) to return to their original position is arranged between the press-down member (2) and the fixing plate (11).

5. The chamfering clamping mechanism for producing Hejie rings according to claim 1 is characterized in that: A guide groove (17) is provided on the top of the fixing plate (11), and the guide groove (17) is located between the limit pin (12) and the return spring (16). The end surface of the clamping member (3) relative to the pressing member (2) is provided with a safety column (18) matching the guide groove (17).

6. The chamfering clamping mechanism for producing Hejie rings according to claim 1, characterized in that: The pressing member (2) and the clamping member (3) are slidably connected via a sliding rod (19).

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