Pipe clamping and pressing die

Abstract

The utility model relates to the field of pipe machining equipment, in particular to a pipe clamping and pressing die which comprises two die assemblies, each die assembly comprises a fixed die and two movable dies, clamping and pressing protrusions are arranged on the movable dies and the fixed die, each die assembly further comprises two arc-shaped installation blocks, the fixed dies and the movable dies are arranged between the two arc-shaped installation blocks, and the arc-shaped installation blocks are arranged on the fixed dies and the movable dies. A mounting groove is formed in the side, away from the movable mold, of each arc-shaped mounting block, a guide groove is formed in the side, close to the movable mold, of each arc-shaped mounting block, a through groove is formed between each guide groove and the corresponding mounting groove in a communicating mode, a spring is arranged in each mounting groove, one end of each spring is connected with a movable block, each movable block is connected with a pin shaft, and each pin shaft penetrates through the corresponding through groove and then is fixedly connected with the movable mold; the spring is arranged in the mounting groove in the side, away from the movable mold, of the arc-shaped mounting block, so that the sealing performance is improved, the spring is convenient to disassemble and replace, the service life of the mold is prolonged, the use cost is reduced, and the use reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing equipment, and in particular to a pipe clamping mold. Background Technology

[0002] With the continuous development of the pipe industry, thin-walled designs have made press-fit connections between pipes possible. A press-fit connection is a method of sealing pipes and fittings through cold extrusion. Electric hydraulic crimping pliers are commonly used in press-fit connections of thin-walled pipes. Both the left and right molds of the pliers have crimping protrusions for crimping fittings. During the press-fit connection process, the operator inserts the pre-sealed pipe into the socket of the fitting, then places the fitting between the crimping grooves of the left and right molds inside the pliers. The hydraulic drive mechanism then presses the molds together, applying circumferential pressure to the connection section of the socket from the outside. This causes the connection section of the socket, along with the inserted pipe, to deform and lock together, thus securing the fitting to the pipe and forming a seal through the sealing ring, enabling interconnection between the pipes.

[0003] Currently, each mold typically includes two moving molds and a fixed mold positioned between them. Both moving molds are connected to the fixed mold via springs, ensuring that during pressing, the two moving molds of the left mold contact the two moving molds of the right mold first. The elasticity of the springs absorbs some of the impact force, providing a buffer during pressing and reducing the impact on the mold and pipe fittings when the hydraulic drive structure suddenly applies pressure. This reduces pipe fitting deformation or damage caused by impact, resulting in better pressing performance. However, because the springs are connected between the moving and fixed molds without a sealing structure, moisture can easily enter between them, causing the springs to rust. This affects the closing accuracy of the moving and fixed molds, reducing reliability. Furthermore, it is difficult to disassemble and replace the springs; if a spring is damaged, the entire mold needs to be replaced, shortening the mold's lifespan and increasing operating costs. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a pipe clamping mold that extends the service life of the mold, reduces the cost of use and improves the reliability of use.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A pipe clamping mold includes two symmetrically arranged mold assemblies. Each mold assembly includes a fixed mold and two movable molds disposed on both sides of the fixed mold. Both the movable molds and the fixed mold are provided with clamping protrusions. Each mold assembly also includes two arc-shaped mounting blocks. The fixed mold and the movable molds are disposed between the two arc-shaped mounting blocks. Each arc-shaped mounting block has a mounting groove on the side away from the movable mold and a guide groove on the side closer to the movable mold. A through groove is provided between the guide groove and the mounting groove. A spring is provided in the mounting groove. One end of the spring abuts against a movable block. The movable block is connected to a pin. The pin passes through the through groove and is fixedly connected to the movable mold. The movable mold is provided with a semi-circular groove. A ball is rolled in the guide groove and embedded in the semi-circular groove.

[0007] Preferably, the fixed mold is fixedly connected to the arc-shaped mounting block by screws.

[0008] Preferably, each of the two moving molds of one mold assembly is provided with a positioning protrusion, and each of the two moving molds of the other mold assembly is provided with a positioning groove, with the two positioning protrusions respectively movably fitted into the two positioning grooves.

[0009] Preferably, a sealing cap is movably fitted onto the top of the mounting slot.

[0010] Preferably, the inner side of the mounting groove is provided with a raised edge, and the bottom of the sealing cover abuts against the raised edge.

[0011] Preferably, the top side of the mounting groove is chamfered.

[0012] Preferably, a first sleeve is connected to the inner side of the mounting groove, a second sleeve is connected to one side of the movable block, one end of the spring is embedded in the second sleeve, and the other end is embedded in the first sleeve.

[0013] Preferably, a stud is connected to the end of the pin away from the movable block, and the stud is connected to the moving mold by a thread.

[0014] The beneficial effects of this utility model are as follows:

[0015] This pipe clamping die improves sealing performance and facilitates spring disassembly and replacement by placing the spring in the mounting groove on the side of the arc-shaped mounting block away from the moving mold, thereby extending the die's service life, reducing usage costs, and increasing reliability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a pipe clamping mold.

[0017] Figure 2 This is a front view of the pipe clamping mold.

[0018] Figure 3 This is a three-dimensional schematic diagram of the mold assembly.

[0019] Figure 4 This is a schematic diagram of the internal structure of the mounting slot.

[0020] Figure 5 This is an exploded view of the mold assembly.

[0021] Figure 6 This is a front view of the mold assembly.

[0022] Figure 7 for Figure 6 Sectional view at point AA.

[0023] In the diagram: 1. Mold assembly; 101. Fixed mold; 102. Moving mold; 103. Clamping protrusion; 104. Arc-shaped mounting block; 105. Mounting groove; 106. Guide groove; 107. Through groove; 108. Spring; 109. Movable block; 110. Pin; 111. Semicircular groove; 112. Ball bearing; 113. Sealing cap; 114. Raised edge; 115. Chamfer; 116. Screw; 117. First sleeve; 118. Second sleeve; 119. Stud; 2. Positioning protrusion; 3. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-7 This utility model provides a technical solution: a pipe clamping mold, comprising two symmetrically arranged mold components 1. Each mold component 1 includes a fixed mold 101 and two movable molds 102 disposed on both sides of the fixed mold 101. Both the movable molds 102 and the fixed mold 101 are provided with clamping protrusions 103. Each mold component 1 also includes two arc-shaped mounting blocks 104. The fixed mold 101 and the movable molds 102 are disposed between the two arc-shaped mounting blocks 104. Each arc-shaped mounting block 104 has a mounting groove on the side away from the movable mold 102. 105, and a guide groove 106 is provided on the side of the moving mold 102. A through groove 107 is provided between the guide groove 106 and the mounting groove 105. A spring 108 is provided in the mounting groove 105. One end of the spring 108 abuts against a movable block 109. A pin 110 is connected to the movable block 109. The pin 110 passes through the through groove 107 and is fixedly connected to the moving mold 102. A semi-circular groove 111 is provided on the moving mold 102. A ball 112 is rolled in the guide groove 106. The ball 112 is embedded in the semi-circular groove 111.

[0026] The width of the mounting groove 105 and the width of the guide groove 106 are both greater than the width of the through groove 107. By setting the spring 108 in the mounting groove 105 on the side of the arc-shaped mounting block 104 away from the moving mold 102, the sealing performance is improved and the spring 108 is easy to disassemble and replace, thus extending the service life of the mold, reducing the cost of use and improving the reliability of use.

[0027] In order to facilitate the disassembly and replacement of the fixed mold 101, in this embodiment, preferably, the fixed mold 101 is fixedly connected to the arc-shaped mounting block 104 by screws 116. The purpose is that the fixed mold 101 is detachably connected to the arc-shaped mounting block 104 by screws 116, so that the fixed mold 101 can be disassembled and replaced when the screws 116 are removed.

[0028] To facilitate ensuring the accuracy and consistency of the two mold components 1 during the mold closing process, in this embodiment, preferably, each of the two moving molds 102 of one mold component 1 is provided with a positioning protrusion 2, and each of the two moving molds 102 of the other mold component 1 is provided with a positioning groove 3. The two positioning protrusions 2 are respectively movably engaged in the two positioning grooves 3. The purpose is to ensure that the two positioning protrusions 2 are respectively engaged in the two positioning grooves 3 when the two mold components 1 are closed, thereby ensuring the accuracy and consistency of the two mold components 1 during the mold closing process and preventing the two mold components 1 from shifting or shaking during the mold closing pressure process.

[0029] To improve sealing, in this embodiment, preferably, a sealing cover 113 is movably fitted onto the top of the mounting groove 105. The purpose of the sealing cover 113 is to seal the mounting groove 105, prevent moisture or dust from entering the mounting groove 105, thereby preventing the spring 108 from rusting, ensuring the mold closing accuracy of the moving mold 102 and the fixed mold 101, and improving the reliability of use.

[0030] In order to facilitate the support of the sealing cover 113, in this embodiment, preferably, the inner side of the mounting groove 105 is provided with a raised edge 114, and the bottom of the sealing cover 113 abuts against the raised edge 114.

[0031] To facilitate the disassembly of the sealing cap 113, in this embodiment, preferably, a chamfer 115 is provided on one side of the top of the mounting groove 105. The purpose of the chamfer 115 is to achieve position avoidance. The user can use a tool to push the sealing cap 113 upward at the chamfer 115 to remove it, thereby disassembling the sealing cap 113.

[0032] To facilitate the positioning and installation of the spring 108, in this embodiment, preferably, the inner side of the mounting groove 105 is connected to a first sleeve 117, and one side of the movable block 109 is connected to a second sleeve 118. One end of the spring 108 is embedded in the second sleeve 118, and the other end is embedded in the first sleeve 117. The purpose is to embed one end of the spring 108 in the second sleeve 118 and the other end in the first sleeve 117, thereby achieving the positioning and installation of the spring 108. Conversely, the spring 108 can be quickly disassembled.

[0033] To facilitate the disassembly and replacement of the moving mold 102, in this embodiment, preferably, a stud 119 is connected to the end of the pin 110 away from the movable block 109. The stud 119 is threadedly connected to the moving mold 102. The purpose is to connect the pin 110 to the moving mold 102 through the stud 119, and conversely, to allow for quick disassembly of the pin 110, thereby allowing the moving mold 102 to be removed and replaced between the two arc-shaped mounting blocks 104.

[0034] The working principle and usage process of this utility model are as follows: Two mold assemblies 1 are driven to press together via a hydraulic drive mechanism. When the two mold assemblies 1 are closed, the two moving molds 102 of one mold assembly 1 first contact the two moving molds 102 of the other mold assembly 1, and the two positioning protrusions 2 are respectively embedded in the two positioning grooves 3. This ensures the accuracy and consistency of the two mold assemblies 1 during the mold closing process and prevents the two mold assemblies 1 from shifting or shaking during the pressing process. During the continued pressing process, the pin 110 slides along the through groove 107. Furthermore, the ball bearing 112 rolls along the guide groove 106, improving the accuracy of the moving mold 102's travel. The pin 110 compresses the spring 108 through the movable block 109, and the elasticity of the spring 108 absorbs some of the impact force, giving the two mold components 1 a certain buffering process during pressing. This reduces the impact on the mold and pipe when the hydraulic drive mechanism suddenly applies pressure, thus preventing deformation or damage to the pipe due to the impact. When the hydraulic drive mechanism releases the pressure, the spring 108 can automatically restore the moving mold 102 to its initial state.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipe clamping die, comprising two symmetrically arranged die assemblies (1), each die assembly (1) comprising a fixed die (101) and two movable dies (102) disposed on both sides of the fixed die (101), wherein both the movable dies (102) and the fixed die (101) are provided with clamping protrusions (103), characterized in that: Each mold assembly (1) further includes two arc-shaped mounting blocks (104). The fixed mold (101) and the moving mold (102) are both disposed between the two arc-shaped mounting blocks (104). Each arc-shaped mounting block (104) has a mounting groove (105) on the side away from the moving mold (102) and a guide groove (106) on the side closer to the moving mold (102). A through groove (107) is provided between the guide groove (106) and the mounting groove (105). A spring (108) is provided in the groove (105). One end of the spring (108) abuts against a movable block (109). The movable block (109) is connected to a pin (110). The pin (110) passes through the through groove (107) and is fixedly connected to the moving mold (102). The moving mold (102) is provided with a semi-circular groove (111). A ball (112) is rolled in the guide groove (106). The ball (112) is embedded in the semi-circular groove (111).

2. The pipe clamping die according to claim 1, characterized in that: The fixed mold (101) is fixedly connected to the arc-shaped mounting block (104) by screws (116).

3. The pipe clamping die according to claim 1, characterized in that: One of the mold components (1) has positioning protrusions (2) on both moving molds (102), and the other mold component (1) has positioning grooves (3) on both moving molds (102). The two positioning protrusions (2) are respectively movably embedded in the two positioning grooves (3).

4. The pipe clamping die according to claim 1, characterized in that: A sealing cap (113) is movably fitted onto the top of the mounting groove (105).

5. The pipe clamping die according to claim 4, characterized in that: The inner side of the mounting groove (105) is provided with a raised edge (114), and the bottom of the sealing cover (113) abuts against the raised edge (114).

6. The pipe clamping die according to claim 4 or 5, characterized in that: The top side of the mounting groove (105) is provided with a chamfer (115).

7. The pipe clamping die according to claim 1, characterized in that: The inner side of the mounting groove (105) is connected to a first sleeve (117), and one side of the movable block (109) is connected to a second sleeve (118). One end of the spring (108) is embedded in the second sleeve (118), and the other end is embedded in the first sleeve (117).

8. The pipe clamping die according to claim 1, characterized in that: The end of the pin (110) away from the movable block (109) is connected to a stud (119), and the stud (119) is connected to the moving mold (102) by a thread.

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