Pipe expansion processing equipment
By using the expansion and expansion array assembly and inner support core rod in the pipe expansion processing equipment, the axial sliding friction between the die and the inner wall of the pipe in the prior art is solved, and the effect of reducing wear and simplifying processing operations is achieved.
Patent Information
- Application Number
- CN202421358462.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In the prior art, during the process of flaring the metal pipe, the axial sliding friction between the die and the inner wall of the pipe causes severe wear of the die, and the complexity of the processing operation is increased.
A pipe expansion and expansion processing equipment is designed, using an expansion and expansion array assembly and an inner support core rod, and the expansion force is applied to the inner wall of the pipe through the radial movement of the expansion and expansion to avoid axial sliding friction.
It reduces wear of expansion and dies, improves the service life of the equipment, reduces the complexity of processing operations, and avoids the need for oil injection lubrication.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal pipe processing, in particular to a pipe expansion processing device. Background Art
[0002] In the prior art, when the port of a metal pipe is expanded, a punch (expansion mold) is used to punch the end of the pipe. Since the outer diameter of the punch is larger than the port diameter of the pipe, the punch expands the end of the pipe outward after punching into the port of the pipe, so that the end of the pipe forms an expanded structure.
[0003] During the traditional expansion process, as the die moves along the axial direction of the tube and punches into the port of the tube, huge sliding friction is generated between the die and the inner wall of the tube. During long-term use, the die surface will be severely worn. In order to minimize the friction between the die and the inner wall of the tube, oil spray lubrication is also required between the punch and the tube during the stamping process, which increases the complexity of the processing operation. Summary of the invention
[0004] The utility model aims to solve the deficiencies in the prior art and provide a pipe expansion processing device.
[0005] The purpose of the utility model is achieved through the following technical solutions: pipe expansion processing equipment, including a frame, the frame is provided with a clamping die and a feeding device, the clamping die is used to clamp the pipe, the feeding mechanism is provided with a shifting mechanism, and the shifting mechanism is provided with an expansion die; the expansion die includes a punch seat, an expansion piece limiting component, and an expansion piece, the expansion piece limiting component is provided with an expansion piece array assembly, the expansion piece array assembly is composed of a plurality of expansion pieces arranged in a circular array, and a second spring is provided between the expansion piece and the expansion piece limiting component; the punch seat is provided with an inner support core rod, the inner support core rod is provided with a conical surface, and each expansion piece on the expansion piece array assembly is in contact with the conical surface on the inner support core rod; a guide reset mechanism is provided between the punch seat and the expansion piece limiting component.
[0006] Preferably, the feed mechanism comprises a fixed seat, a first guide rail is provided on the fixed seat, a feed movable seat is slidably connected to the first guide rail, a feed driving member for driving the feed movable seat to move is provided on the fixed seat, and a shifting mechanism is arranged on the feed movable seat.
[0007] Preferably, the transposition mechanism comprises a second guide rail arranged on the feed movable seat, the second guide rail is slidably connected with the transposition movable seat, a driving mechanism is arranged between the transposition movable seat and the feed movable seat, and the punch seat on the expansion mold is fixedly arranged on the transposition movable seat.
[0008] Preferably, the driving mechanism comprises a rack arranged on the transposition movable seat, a transposition motor arranged on the feed movable seat, and the transposition motor is connected to a gear meshing with the rack.
[0009] Preferably, the first guide rail and the second guide rail are perpendicular.
[0010] Preferably, the expansion member limiting component is provided with an expansion member restraining cavity, which is a cylindrical cavity. The expansion member includes a guide body and an inner support body. The guide body is arranged in the expansion member restraining cavity and can move radially along the expansion member restraining cavity.
[0011] Preferably, a spring hole is provided on the expansion member, one end of the second spring is connected to the spring hole, and the other end of the second spring contacts the inner wall of the expansion member restraining cavity.
[0012] Preferably, the guide reset mechanism includes a guide column and a first spring, one end of the guide column is connected to the expansion member limiting component, a guide hole is provided on the punch seat, the guide column is slidably connected in the guide hole, and the first spring is arranged between the punch seat and the expansion member limiting component.
[0013] The beneficial effects of the utility model are as follows: when the utility model performs expansion processing on the pipe, an outward expansion force is applied to the inner wall of the pipe through the radial movement of the expansion piece. During the processing, there is no axial sliding friction between the expansion piece and the inner wall of the pipe, and the friction and wear caused to the surface of the expansion piece are small, thereby improving the service life of the expansion mold and reducing the requirements for the wear resistance of the expansion piece material; and when the pipe is expanded by the device, there is no need to perform oil spray lubrication operation, thereby reducing the complexity of the processing operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the structure of the feeding mechanism and the shifting mechanism.
[0016] Figure 3 This is an exploded diagram of the expansion die structure.
[0017] Figure 4 It is a cross-sectional view of the expansion mold.
[0018] Figure 5 It is a schematic diagram of the structure of the expansion component array assembly.
[0019] Figure 6 Schematic diagram of the expansion die performing expansion processing on the pipe.
[0020] In the figure: 1, frame, 2, feed drive member, 3, expansion mold, 3-1, punch seat, 3-2, inner support core rod, 3-3, first spring, 3-4, guide column, 3-5, expansion member limit sleeve, 3-6, second spring, 3-7, expansion member, 3-7a, guide body, 3-7b, inner support body, 3-7c, spring hole, 3-8, cover plate, 3-11, guide hole, 4, fixed seat, 5, feed movable seat, 6, first guide rail, 7, transposition movable seat, 9, clamping die, 10, pipe, 11, gear, 12, rack, 13, transposition motor. DETAILED DESCRIPTION
[0021] 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 in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0022] like Figures 1 to 6 As shown, a pipe expansion processing equipment comprises a frame 1, on which a clamping die 9 and a feeding device are provided, the clamping die 9 is used to clamp the pipe 10, the feeding mechanism is provided with a shifting mechanism, on which an expansion die 3 is provided; the expansion die 3 comprises a punch seat 3-1, an expansion piece limiting component, and an expansion piece 3-7, on which an expansion piece array assembly is provided, the expansion piece array assembly is composed of a plurality of expansion pieces 3-7 arranged in a circular array, a second spring 3-6 is provided between the expansion piece 3-7 and the expansion piece limiting component; on the punch seat 3-1, an inner support core rod 3-2 is provided, on which a conical surface is provided, and each expansion piece 3-7 on the expansion piece array assembly is in contact with the conical surface on the inner support core rod 3-2; between the punch seat 3-1 and the expansion piece limiting component, a guiding and resetting mechanism is provided.
[0023] The feeding mechanism is used to drive the expansion mold 3 to realize the feeding movement, and the feeding movement moves along the axial direction of the inner support core rod 3-2; the transposition mechanism is provided with a plurality of expansion molds 3 arranged in a straight line, and the transposition action of the expansion mold 3 is realized by the transposition mechanism.
[0024] The inner support core rod 3-2 extends into the center of the expansion component array assembly. When the inner support core rod 3-2 moves in one direction, each expansion component 3-7 moves toward the radial outer side of the expansion component array assembly under the action of the conical surface on the inner core rod. When the inner support core rod 3-2 moves in the other direction, each expansion component 3-7 moves toward the center of the expansion component array assembly under the action of the second spring 3-6. The clamping die 9 is opposite to the expansion die 3.
[0025] When the utility model performs expansion processing on the tube 10, the tube 10 is first clamped and fixed by the clamping die 9, and one end of the tube 10 is opposite to the expansion piece 3-7; the feeding mechanism drives the punch seat 3-1 to move forward so that one end of the expansion piece 3-7 extends into the port of the tube 10, and the expansion piece limiting component contacts with one end of the tube 10, and then the inner support core rod 3-2 continues to move, and under the action of the conical surface on the inner core rod, each expansion piece 3-7 moves toward the radial outside of the expansion piece array assembly, so that the expansion piece array assembly expands as a whole, thereby expanding the end of the tube 10, so that the end of the tube 10 forms an expansion structure; after the expansion is completed, the punch seat 3-1 retreats, and each expansion piece 3-7 moves toward the center direction of the expansion piece array assembly and resets under the action of the second spring 3-6, and then the expansion piece 3-7 withdraws from the port of the tube 10.
[0026] The feeding mechanism includes a fixed seat 4, which is fixedly arranged on the frame 1, and a first guide rail 6 is arranged on the fixed seat 4, and a feeding movable seat 5 is slidably connected to the first guide rail 6, and a feeding driving member 2 for driving the feeding movable seat 5 to move is arranged on the fixed seat 4, and a transposition mechanism is arranged on the feeding movable seat 5. In some embodiments of the present invention, the feeding driving member 2 is a cylinder piston hydraulic cylinder. The feeding driving member 2 drives the feeding movable seat 5 to move along the direction of the first guide rail 6, thereby realizing the feeding movement of the expansion mold 3.
[0027] The transposition mechanism includes a second guide rail arranged on the feed movable seat 5, and the first guide rail 6 is perpendicular to the second guide rail. A transposition movable seat 7 is slidably connected to the second guide rail, and a driving mechanism is arranged between the transposition movable seat 7 and the feed movable seat 5, and the punch seat 3-1 on the expansion mold 3 is fixedly arranged on the transposition movable seat 7. Specifically, the driving mechanism includes a rack 12 arranged on the transposition movable seat 7 and a transposition motor 13 arranged on the feed movable seat 5, the rack 12 is parallel to the second guide rail, and the transposition motor 13 is connected to a gear 11 meshing with the rack 12. The gear 11 is driven to rotate by the transposition motor 13, and the transposition movable seat 7 is driven to move along the second guide rail through the cooperation between the gear 11 and the rack 12, thereby realizing the transposition action of the expansion mold 3.
[0028] Furthermore, an expansion member restraint cavity is provided on the expansion member limiting component, and the expansion member restraint cavity is a cylindrical cavity; the expansion member 3-7 is "L"-shaped as a whole, and the expansion member 3-7 includes a guide body 3-7a and an inner support body 3-7b, and the guide body 3-7a is arranged in the expansion member restraint cavity and can move radially along the expansion member restraint cavity.
[0029] The expansion member limiting component includes an expansion member limiting sleeve 3-5 and a cover plate 3-8 connected to one side of the expansion member limiting sleeve 3-5, and the cover plate 3-8 and the expansion member limiting sleeve 3-5 together define an expansion member restraining cavity. The cover plate 3-8 and the expansion member limiting sleeve 3-5 are bolted. The cover plate 3-8 is annular, and the hollow area in the center of the cover plate 3-8 is used for the inner support body 3-7b to pass through.
[0030] The expansion member 3-7 is provided with a spring hole 3-7c, which is arranged at one end of the guide body 3-7a on the expansion member 3-7, one end of the second spring 3-6 is connected to the spring hole 3-7c, and the other end of the second spring 3-6 contacts the inner wall of the expansion member constraint cavity. The second spring 3-6 is arranged along the radial direction of the expansion member constraint cavity.
[0031] The guide reset mechanism includes a guide post 3-4 and a first spring 3-3. One end of the guide post 3-4 is connected to the expansion member limit sleeve 3-5. The punch seat 3-1 is provided with a guide hole 3-11. The guide post 3-4 is slidably connected in the guide hole 3-11. The first spring 3-3 is set between the punch seat 3-1 and the expansion member limit member. The first spring 3-3 is sleeved on the guide post 3-4, and the guide post 3-4 is parallel to the inner support core rod 3-2. The punch seat 3-1 and the expansion member limit member can move relative to each other along the axial direction of the guide post 3-4.
[0032] The utility model has the following advantages:
[0033] When the utility model performs expansion processing on the pipe 10, an outward expansion force is applied to the inner wall of the pipe 10 through the radial movement of the expansion piece 3-7. During the processing, there is no axial sliding friction between the expansion piece 3-7 and the inner wall of the pipe 10, and the friction and wear caused to the surface of the expansion piece 3-7 are small, thereby improving the service life of the expansion mold and reducing the requirements for the wear resistance of the expansion piece 3-7 material; and when the pipe 10 is expanded by the device, there is no need to perform oil spray lubrication operation, thereby reducing the complexity of the processing operation.
[0034] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.
Claims
1. Pipe expansion processing equipment, characterized in that: It includes a frame, on which a clamping die and a feeding device are provided, the clamping die is used to clamp the pipe, the feeding mechanism is provided with a shifting mechanism, and the shifting mechanism is provided with an expansion die; the expansion die includes a punch seat, an expansion piece limiting component, and an expansion piece, the expansion piece limiting component is provided with an expansion piece array assembly, the expansion piece array assembly is composed of a number of expansion pieces arranged in a circular array, and a second spring is provided between the expansion piece and the expansion piece limiting component; the punch seat is provided with an inner support core rod, the inner support core rod is provided with a conical surface, and each expansion piece on the expansion piece array assembly is in contact with the conical surface on the inner support core rod; a guiding reset mechanism is provided between the punch seat and the expansion piece limiting component.
2. The pipe expansion processing equipment according to claim 1, characterized in that: The feeding mechanism comprises a fixed seat, a first guide rail is arranged on the fixed seat, a feeding movable seat is slidably connected to the first guide rail, a feeding driving member for driving the feeding movable seat to move is arranged on the fixed seat, and a shifting mechanism is arranged on the feeding movable seat.
3. The pipe expansion processing equipment according to claim 2, characterized in that: The transposition mechanism comprises a second guide rail arranged on the feed movable seat, the second guide rail is slidably connected with the transposition movable seat, a driving mechanism is arranged between the transposition movable seat and the feed movable seat, and the punch seat on the expansion die is fixedly arranged on the transposition movable seat.
4. The pipe expansion processing equipment according to claim 3, characterized in that: The driving mechanism comprises a rack arranged on the transposition movable seat, a transposition motor arranged on the feed movable seat, and the transposition motor is connected with a gear meshing with the rack.
5. The pipe expansion processing equipment according to claim 3, characterized in that: The first guide rail and the second guide rail are perpendicular.
6. The pipe expansion processing equipment according to any one of claims 1 to 5, characterized in that: The expansion member limiting component is provided with an expansion member restraining cavity, which is a cylindrical cavity. The expansion member includes a guide body and an inner support body. The guide body is arranged in the expansion member restraining cavity and can move radially along the expansion member restraining cavity.
7. The pipe expansion processing equipment according to claim 6, characterized in that: The expansion piece is provided with a spring hole, one end of the second spring is connected to the spring hole, and the other end of the second spring contacts the inner wall of the expansion piece restraining cavity.
8. The pipe expansion processing equipment according to any one of claims 1 to 5, characterized in that: The guide reset mechanism includes a guide column and a first spring. One end of the guide column is connected to the expansion member limiting component. The punch seat is provided with a guide hole. The guide column is slidably connected in the guide hole. The first spring is arranged between the punch seat and the expansion member limiting component.