Equal-wall contracted pipe mold capable of rapidly replacing core rod

Abstract

The utility model discloses an equal-wall contracted pipe mold capable of rapidly replacing a core rod. The equal-wall contracted pipe mold comprises a sliding supporting piece, a mold core rod and a power mechanism, a forming cavity is formed in the sliding supporting piece, the mold core rod comprises a core rod body and a forming head, one end of the core rod body is a forming end, the forming head is detachably connected to the forming end of the core rod body, the other end of the core rod body is a fixed end, and the power mechanism is in transmission connection with the fixed end of the core rod body. And the forming head of the mold core rod is driven to extend into or be separated from the forming cavity of the sliding supporting piece. The forming head of the mold core rod is designed to be the detachable forming end, during replacement, the forming end can be directly detached, and replacement of the forming head is more convenient and faster. In addition, when the use frequency of the forming head reaches the preset number of materials, the forming head can be disassembled, assembled and replaced in a disassembling mode, the whole forming head does not need to be replaced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal workpiece processing, in particular to a uniform wall shrinkage tube die for quickly replacing a core rod. Background Art

[0002] Equal wall shrinking is a metal tube processing technology that aims to change the diameter of the tube while maintaining a uniform wall thickness. This process is widely used in industries such as aerospace, automobile manufacturing, and petrochemicals. The key to achieving equal wall shrinking is to accurately control the material flow and deformation process to ensure uniform wall thickness distribution throughout the forming area. In the processing process, the equal wall shrinking mold plays a key forming role.

[0003] The existing equal-wall tube reduction mold, as shown in patent number CN11509774A, includes a unary unit and a binary unit, which are respectively slidably mounted on the tube reduction equipment, and both have the functions of synchronous sliding process and independent sliding process. Among them, the unary unit is provided with a tube reduction mold core for reducing the diameter of the tube, and the binary unit is provided with a mold core rod for maintaining the wall thickness of the tube after diameter reduction uniform. The tube reduction mold core and the mold core realize equal-wall diameter reduction of the metal tube under the sliding cooperation of the unary unit and the binary unit, so as to meet the use requirements of different industries for metal tubular hollow products.

[0004] However, one end of the existing mold core rod is fixed in the binary unit, and the other end extends into the unary unit. The core rod is a consumable part. In the prior art, replacing the core rod requires manual disassembly of the binary unit and removal of the core rod, which takes several hours and has low work efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide an equal-wall shrinkage tube mold with a quick replacement core rod. Since the molding head of the mold core rod is the position that is subjected to the greatest pressure during the equal-wall shrinkage process, this part is most susceptible to deformation or wear. For this reason, the present application designs the molding head of the mold core rod as a detachable molding end. When replacing, it can be directly disassembled, and the replacement of the molding head is more convenient and quick. In addition, when the frequency of use of the molding head reaches the preset number of materials, it can be disassembled and replaced by disassembling, without the need to replace the entire head, thereby reducing production costs.

[0006] The purpose of the utility model is achieved by adopting the following technical scheme: a uniform wall shrink tube mold for quickly replacing core rods, comprising a sliding support, a mold core rod, and a power mechanism; the sliding support has a molding cavity, the mold core rod comprises a core rod body and a molding head, one end of the core rod body is a molding end, the molding head is detachably connected to the molding end of the core rod body, and the other end of the core rod body is a fixed end, the power mechanism is transmission-connected to the fixed end of the core rod body, and drives the molding head of the mold core rod to extend into or out of the molding cavity of the sliding support.

[0007] Furthermore, the forming head is detachably mounted on the forming end of the mandrel body through a threaded connection, and the fixed end of the mandrel body is conical.

[0008] Furthermore, the forming head includes the first connecting segment, the second connecting segment, and the third connecting segment. The first connecting segment, the second connecting segment, and the third connecting segment are split structures and are detachably sleeved on the core rod body.

[0009] Furthermore, the sliding support is fixedly installed on one side of the first support seat, and the power mechanism is fixed on the other side of the first support seat through a clamp assembly. The clamp assembly loosens or clamps the power mechanism to make the mold core rod in a detachable state or an equal wall shrinkage tube working state.

[0010] Furthermore, the clamp assembly includes a fixed guide frame fixed on the first support seat, two clamping blocks slidably mounted on the fixed guide frame, and a first cylinder assembly that drives the two clamping blocks to move closer to or away from each other to clamp or release the power mechanism.

[0011] Furthermore, the power mechanism is fixedly mounted on the second support seat; the power mechanism is a second cylinder assembly, the cylinder body portion of the second cylinder assembly is fixedly mounted on the third support seat, the telescopic arm of the second cylinder assembly is transmission-connected to the fixed end of the core rod body through two clamping blocks of the clamping assembly; an annular limiting groove is provided at the end of the telescopic arm, and an annular clamping opening matching the shape and size of the annular limiting groove is provided between the two clamping blocks of the clamping assembly, and the two clamping blocks are clamped in the annular limiting groove of the telescopic arm to clamp the power mechanism.

[0012] Furthermore, one end of the sliding support member is fixedly mounted on one side of the first support seat through a flange, and the other end of the sliding support member is penetrated on the third support seat.

[0013] Furthermore, the first support seat is installed on the guide rail via a slider, and the third support seat is installed on the guide rail via another slider; the first support seat and the third support seat have a synchronous sliding process and an independent sliding process.

[0014] Furthermore, a third oil cylinder assembly is arranged between the first support seat and the third support seat, the cylinder body portion of the third oil cylinder assembly is fixed on the third support seat, and the telescopic arm portion of the third oil cylinder assembly is fixed on the first support seat.

[0015] Furthermore, the wall tube reduction mold also includes a tube reduction mold core, and the tube reduction mold core is installed on a side of the sliding support away from the flange.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) Since the molding head of the mold core rod is the position that is subjected to the greatest pressure during the equal wall reduction process, especially the most concentrated axial tension, this part is most susceptible to deformation or wear; the locking nut of the mold core rod and the connection with the tube reduction mold core are respectively subjected to axial and lateral forces. Long-term use exceeding the component fatigue period may cause this part to break, causing the mold core to be stuck in the product, making it difficult to quickly remove the mold core rod and the tube reduction mold core. For this reason, the present application designs the molding head of the mold core rod to be a detachable molding end. When replacing, it can be directly disassembled, and replacement of the molding head is more convenient and quick. In addition, when the frequency of use of the molding head reaches the preset number of materials, it can be disassembled and replaced by disassembly, without the need to replace the entire piece, thereby reducing production costs.

[0018] (2) The threaded connection between the forming head and the forming end of the mandrel body makes disassembly most convenient, improves the timeliness of replacing parts, and improves the operating efficiency of the equipment.

[0019] (3) Since the molding head of the mold core rod needs to be designed with a certain tube diameter due to the need for tube blank molding, dividing it into multiple detachable connecting sections is conducive to designing molding heads of different diameters according to the molding conditions and improving the adaptability of the product.

[0020] (4) The present application designs a clamp assembly, and utilizes a cylinder assembly and a clamp block to clamp the telescopic arm of the power mechanism to support the fixed end of the core rod body. This design is conducive to the mechanical automation and rapid replacement of the core rod, without the need for manual replacement of fixing auxiliary parts such as the disassembly flange, thereby realizing automated core replacement.

[0021] (5) The third cylinder assembly is designed to improve the distance accuracy between the first support seat and the second support seat, thereby effectively ensuring the uniformity of the wall thickness of the tube blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a uniform wall shrink tube mold for quickly replacing a mandrel in a preferred embodiment of the utility model;

[0023] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 3 This is a partial structural cross-sectional view of an equal-wall shrink tube mold for quickly replacing a mandrel in a preferred embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the partial structure disassembly of a uniform wall shrink tube mold for quickly replacing a core rod in a preferred embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the assembly structure of the sliding support member, the mold core rod, and the shrinking tube mold core in a preferred embodiment of the utility model;

[0027] Figure 6 for Figure 5 Schematic diagram of the longitudinal section structure;

[0028] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle.

[0029] In the figure: 1. sliding support; 101. forming cavity; 2. mold core rod; 21. core rod body; 22. forming head; 221. first connecting section; 222. second connecting section; 223. third connecting section; 3. power mechanism; 31. second cylinder assembly; 311. cylinder body; 312. telescopic arm; 3121. annular limit groove; 4. first support seat; 5. clamp assembly; 51. fixed guide frame; 52. clamp block; 521. annular clamping port; 53. first cylinder assembly; 6. second support seat; 7. flange; 8. third support seat; 9. slide block; 10. third cylinder assembly; 11. shrink tube core; G. tube blank. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] like Figure 1-7 As shown, a uniform wall shrink tube mold for quickly replacing core rods includes a sliding support 1, a mold core rod 2, and a power mechanism 3; the sliding support 1 has a molding cavity 101, the mold core rod 2 includes a core rod body 21 and a molding head 22, one end of the core rod body 21 is a molding end, the molding head 22 is detachably connected to the molding end of the core rod body 21, and the other end of the core rod body 21 is a fixed end, the power mechanism 3 is transmission-connected to the fixed end of the core rod body 21, and drives the molding head 22 of the mold core rod 2 to extend into or out of the molding cavity 101 of the sliding support 1.

[0032] Since the molding head 22 of the mold core rod 2 is the position that is subjected to the greatest pressure during the equal wall shrinkage process, this part is most susceptible to deformation or wear. Therefore, the present application designs the molding head 22 of the mold core rod 2 as a detachable molding end, which can be directly disassembled when replaced, making it more convenient and quick to replace the molding head 22. In addition, when the molding head 22 is used at a frequency that reaches the preset number of materials, it can be disassembled and replaced by disassembling, without having to replace the entire piece, thereby reducing production costs.

[0033] As a further preferred solution, the forming head 22 is detachably mounted on the forming end of the mandrel body 21 through a threaded connection, and the fixed end of the mandrel body 21 is tapered. The threaded connection makes disassembly most convenient, improves the timeliness of replacing parts, and improves the operating efficiency of the equipment.

[0034] As a further preferred solution, the molding head 22 includes the first connecting segment 221, the second connecting segment 222, and the third connecting segment 223. The first connecting segment 221, the second connecting segment 222, and the third connecting segment 223 are split structures and are respectively detachably sleeved on the mandrel body 21. Since the molding head 22 of the mold mandrel 2 needs to be designed as a molding head with a certain tube diameter due to the need for molding the tube blank G, dividing it into a plurality of detachable connecting segments is conducive to designing molding heads of different diameters according to the molding conditions, thereby improving the adaptability of the product.

[0035] As a further preferred solution, the sliding support member 1 is fixedly installed on one side of the first support seat 4, and the power mechanism 3 is fixed on the other side of the first support seat 4 through a clamp assembly 5. The clamp assembly 5 loosens or clamps the power mechanism 3 to make the mold core rod 2 in a detachable state or an equal wall shrinkage tube working state.

[0036] The present application designs a clamp assembly 5, and utilizes a cylinder assembly and a clamp block 52 to clamp the telescopic arm of the power mechanism 3 to support the fixed end of the core rod body 21. This design is conducive to the mechanical automation and rapid replacement of the core rod, without the need for manual replacement of fixing auxiliary parts such as the disassembly flange, thereby realizing automated core replacement.

[0037] As a further preferred embodiment, the clamp assembly 5 includes a fixed guide frame 51 fixed on the first support seat 4, two clamping blocks 52 slidably mounted on the fixed guide frame 51, and a first cylinder assembly 53 that drives the two clamping blocks 52 to move closer to or away from each other to clamp or release the power mechanism 3.

[0038] As a further preferred scheme, the power mechanism 3 is fixedly mounted on the second support seat 6; the power mechanism 3 is a second cylinder assembly 31, the cylinder body part 311 of the second cylinder assembly 31 is fixedly mounted on the third support seat 8, and the telescopic arm 312 of the second cylinder assembly 31 is transmission-connected to the fixed end of the core rod body 21 through the two clamping blocks 52 of the clamping assembly 5; an annular limiting groove 3121 is provided at the end of the telescopic arm, and an annular clamping opening 521 which is adapted to the shape and size of the annular limiting groove 3121 is provided between the two clamping blocks 52 of the clamping assembly 5, and the two clamping blocks 52 are clamped in the annular limiting groove 3121 of the telescopic arm to clamp the power mechanism 3.

[0039] As a further preferred solution, one end of the sliding support member 1 is fixedly mounted on one side of the first support seat 4 through a flange 7, and the other end of the sliding support member 1 is passed through the third support seat 8. The sliding support member 1 is a mounting member for the mold core rod 2 and the tube shrinking mold core 11, which not only provides installation space for the two, but also the hollow molding cavity 101 thereof is a molding space for the equal wall tube shrinking process, and the moving distance between the mold core rod 2 and the tube shrinking mold core 11 is utilized to achieve the tube shrinking and equal wall thickness effects of the tube blank G. One end of the sliding support member 1 is usually fixed on the first support seat 4 through a flange 7, and the other end is passed through the third support seat 8, and the first support seat 4 drives it to actively feed or passively retract, so as to achieve the tube shrinking and equal wall process of the tube blank G.

[0040] As a further preferred solution, the first support seat 4 is installed on the guide rail through a slider 9, and the third support seat 8 is installed on the guide rail through another slider 9; the first support seat 4 and the third support seat 8 have a synchronous sliding process and an independent sliding process.

[0041] As a further preferred solution, a third oil cylinder assembly 10 is further provided between the first support seat 4 and the third support seat 8, the cylinder body portion 311 of the third oil cylinder assembly 10 is fixed on the third support seat 8, and the telescopic arm portion of the third oil cylinder assembly 10 is fixed on the first support seat 4. The third oil cylinder assembly 10 is designed to improve the accuracy of the distance between the first support seat 4 and the second support seat 6, thereby effectively ensuring the uniformity of the wall thickness of the tube blank G and the like.

[0042] As a further preferred solution, the equal-wall tube reduction mold further comprises a tube reduction mold core 11 , and the tube reduction mold core 11 is installed on a side of the sliding support 1 away from the flange.

[0043] The process of replacing the mold core rod 2 in this application is as follows:

[0044] When the mold core rod 2 needs to be replaced, the two clamping blocks 52 of the clamp assembly 5 are loosened, and the telescopic arm part of the power mechanism 3 is in a non-fixed free state. At this time, the telescopic arm part retreats into the cylinder part 311, and the conical fixed end of the mold core rod 2 is in an exposed state. At this time, the conical head can be grasped, and the mold core rod 2 can be directly taken out, and the molding head 22 of the core rod can be quickly replaced to achieve efficient replacement of the core rod.

[0045] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A uniform wall shrink tube die for rapid replacement of mandrels, characterized in that: It includes a sliding support, a mold core rod, and a power mechanism; the sliding support has a molding cavity, the mold core rod includes a core rod body and a molding head, one end of the core rod body is a molding end, the molding head is detachably connected to the molding end of the core rod body, and the other end of the core rod body is a fixed end, the power mechanism is transmission-connected to the fixed end of the core rod body, and drives the molding head of the mold core rod to extend into or out of the molding cavity of the sliding support.

2. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 1, characterized in that: The forming head is detachably mounted on the forming end of the mandrel body through a threaded connection, and the fixed end of the mandrel body is tapered.

3. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 1, characterized in that: The forming head comprises a first connecting section, a second connecting section and a third connecting section. The first connecting section, the second connecting section and the third connecting section are split structures and are detachably sleeved on the core rod body.

4. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 1, characterized in that: The sliding support is fixedly mounted on one side of the first support seat, and the power mechanism is fixed on the other side of the first support seat through a clamp assembly. The clamp assembly loosens or clamps the power mechanism to place the mold core rod in a detachable state or an equal wall shrinkage tube working state.

5. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 4, characterized in that: The clamp assembly includes a fixed guide frame fixed on the first support seat, two clamping blocks slidably mounted on the fixed guide frame, and a first cylinder assembly that drives the two clamping blocks to move closer to or away from each other to clamp or release the power mechanism.

6. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 5, characterized in that: The power mechanism is fixedly mounted on the second support seat; the power mechanism is a second cylinder assembly, the cylinder body portion of the second cylinder assembly is fixedly mounted on the third support seat, the telescopic arm of the second cylinder assembly is transmission-connected to the fixed end of the mandrel body through the two clamping blocks of the clamping assembly; an annular limiting groove is provided at the end of the telescopic arm, and an annular clamping opening that is adapted to the shape and size of the annular limiting groove is provided between the two clamping blocks of the clamping assembly, and the two clamping blocks are clamped in the annular limiting groove of the telescopic arm to clamp the power mechanism.

7. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 4, characterized in that: One end of the sliding support member is fixedly mounted on one side of the first support seat through a flange, and the other end of the sliding support member is penetrated on the third support seat.

8. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 7, characterized in that: The first support seat is installed on the guide rail through a slider, and the third support seat is installed on the guide rail through another slider; the first support seat and the third support seat have a synchronous sliding process and an independent sliding process.

9. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 7, characterized in that: A third oil cylinder assembly is also arranged between the first support seat and the third support seat. The cylinder body of the third oil cylinder assembly is fixed on the third support seat, and the telescopic arm of the third oil cylinder assembly is fixed on the first support seat.

10. The equal-wall shrink tube mold for quickly changing the mandrel according to claim 7, characterized in that: The wall tube shrinking mold also includes a tube shrinking mold core, which is installed on a side of the sliding support away from the flange.

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