Self-positioning die seat

Abstract

The utility model discloses a self-positioning die seat, which belongs to the technical field of metal processing, and comprises a support component and a die seat component, the support component comprises a fixed seat, and a positioning hole is formed in the fixed seat in a penetrating manner; the die base assembly comprises a supporting part and a protruding part, the protruding part is connected with the supporting part, the supporting part is movably connected with the fixing base, the protruding part penetrates through the positioning hole, the inner diameter of the positioning hole is larger than the outer diameter of the protruding part, a center through groove is formed in the middle of the protruding part in the axial direction of the protruding part in a penetrating mode, and a drawing die is coaxially arranged in the center through groove. A to-be-drawn pipe body can be arranged in the central through groove and the drawing die in a penetrating manner; the supporting part can move relative to the fixing base and drive the protruding part to move in the radial direction of the positioning hole so as to adjust the axis position of the center through groove, self-adaptive adjustment can be conducted according to the center line positions of copper pipes with different pipe diameters, the production efficiency is improved, and the defect that a traditional fixing die base cannot adapt to the copper pipes with different pipe diameters is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal processing technical field especially relates to a self -positioning mould seat. BACKGROUND

[0002] Copper pipe stretching as the important technological link in copper pipe processing, aims at changing the shape and size of copper pipe through stretching, obtains the high-precision copper pipe with specific outer diameter, wall thickness and length to satisfy the demand of various industrial and civilian fields.

[0003] Referring to Figure 1 As shown, copper pipe disc stretcher produces the tensile force to realize the stretching effect of copper pipe 200 by the friction force between big disc 100 and copper pipe 200. However, due to the fixed shape and structure of big disc 100, its outer circle size is constant, which leads to the change of the relative position of copper pipe 200 center line on big disc 100 when the outer diameter of copper pipe 200 is different, that is, the greater the outer diameter of copper pipe 200, the farther the center line distance from the center of big disc 100.

[0004] And in the prior art, the mould seat is usually fixedly arranged, and this fixed mould seat cannot adapt to the stretching demand of copper pipe 200 with different pipe diameters. When stretching copper pipe 200 with different pipe diameters, the center line of the mould and the center line of copper pipe 200 will have a large deviation. This deviation is easy to cause the pipe breaking phenomenon in the stretching process, and also causes the eccentricity of pipe wall thickness, thereby seriously affecting the stretching quality and yield of copper pipe 200. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a self-positioning mould seat to solve the technical problems of fixed position of the mould seat in the prior art and the inability to adapt to copper pipes with different pipe diameters.

[0006] As conceived above, the technical scheme adopted by the utility model is:

[0007] A self-positioning mould seat, comprising:

[0008] A supporting assembly, comprising a fixed seat, and a positioning hole is through-set on the fixed seat;

[0009] A mould seat assembly, comprising a supporting part and a convex part, the convex part is connected with the supporting part, the supporting part is movably connected with the fixed seat, the convex part is through-set in the positioning hole, the inner diameter of the positioning hole is greater than the outer diameter of the convex part, a center through slot is through-set on the middle part of the convex part along the axial direction of the convex part, a drawing die is coaxially arranged in the center through slot, and a pipe body to be drawn can be through-set in the center through slot and the drawing die; the supporting part can move relative to the fixed seat, drive the convex part to move along the radial direction of the positioning hole, and adjust the axial position of the center through slot.

[0010] Preferably, the support assembly further comprises universal balls, the universal balls are arranged on the fixing base, the support part is in contact with the universal balls, and the support part is in sliding connection with the fixing base through the universal balls.

[0011] Preferably, a plurality of universal balls are arranged, and the universal balls are arranged at intervals in the circumferential direction of the positioning hole.

[0012] Preferably, the number of universal balls is greater than or equal to six and less than or equal to eight.

[0013] Preferably, the support assembly further comprises ball seats, one mounting groove is arranged on the fixing base for each universal ball, one ball seat is arranged in each mounting groove, the universal ball is arranged in the ball seat, and a plurality of balls are arranged between the universal ball and the ball seat.

[0014] Preferably, a limiting plate is arranged on the outer periphery of the fixing base, the limiting plate comprises a horizontal plate and a vertical plate, the horizontal plate and the vertical plate are arranged in an L shape, the horizontal plate is used for limiting the axial movement of the support part relative to the positioning hole, and the vertical plate is used for limiting the radial movement of the support part relative to the positioning hole.

[0015] Preferably, the distance between the edge of the support part and the vertical plate is a first distance value, and the first distance value is greater than or equal to 3 mm and less than or equal to 10 mm.

[0016] Preferably, the distance between the outer wall of the convex part and the inner wall of the positioning hole is a second distance value, and the second distance value is greater than or equal to 3 mm and less than or equal to 10 mm.

[0017] Preferably, the support assembly further comprises an arc-shaped pad, the arc-shaped pad is arranged at the bottom of the support part, and the arc-shaped surface of the arc-shaped pad is in contact with the support part.

[0018] Preferably, a clamping groove is arranged at one end of the convex part close to the support part, and the drawing die can be detachably embedded in the clamping groove.

[0019] The utility model discloses the beneficial effects of:

[0020] The self-positioning mold holder proposed in this utility model features a movable connection between the support and the fixed base. This allows the support to move flexibly according to the needs of different diameter pipe bodies, thereby promptly adjusting the position of the protrusion and improving the adaptability and working efficiency of the mold holder. A through-hole on the fixed base provides installation space for the protrusion. The design of the inner diameter of the positioning hole being larger than the outer diameter of the protrusion leaves sufficient clearance for the protrusion to move radially along the positioning hole. This allows for precise adjustment of the axial position of the central slot, ensuring that the mold centerline and the centerline of the pipe body are aligned when stretching pipe bodies of different diameters, solving the problem of centerline deviation caused by a fixed mold holder position. The drawing mold is coaxially arranged within the central slot, ensuring smooth passage of the pipe body and providing a stable and reliable channel for stretching, ensuring the continuity and stability of the stretching process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a copper tube disc stretching machine in the prior art;

[0022] Figure 2 This is a cross-sectional view of the self-positioning mold base provided in this embodiment of the utility model;

[0023] Figure 3 This is a first structural schematic diagram of the support component provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the second structure of the support component provided in this embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the mold base assembly provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 100, large plate; 200, copper tube; 300, drawing die;

[0028] 1. Support assembly; 11. Fixing base; 111. Positioning hole; 112. Mounting groove; 12. Universal ball; 13. Ball seat; 14. Ball bearing; 15. Limiting plate; 151. Horizontal plate; 152. Vertical plate; 16. Arc-shaped pad;

[0029] 2. Mold base assembly; 21. Support part; 22. Protrusion; 221. Central through groove; 222. Slot; Detailed Implementation

[0030] The embodiments of the present application are described below in detail, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the description of the present application, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless explicitly defined and limited otherwise, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The technical scheme of the present application is further illustrated below by combining the drawings and through specific embodiments.

[0034] Referring to Figures 2 to 5 The self-positioning mold base provided by the embodiments of the present application comprises a support assembly 1 and a mold base assembly 2. The support assembly 1 comprises a fixed seat 11, and a positioning hole 111 is formed through the fixed seat 11. The mold base assembly 2 comprises a support part 21 and a protruding part 22, the protruding part 22 is connected with the support part 21, the support part 21 is movably connected with the fixed seat 11, the protruding part 22 is arranged in the positioning hole 111, the inner diameter of the positioning hole 111 is greater than the outer diameter of the protruding part 22, a central through groove 221 is formed through the middle part of the protruding part 22 along the axial direction of the protruding part 22, a drawing die 300 is coaxially arranged in the central through groove 221, and a pipe body to be drawn can be arranged in the central through groove 221 and the drawing die 300. The support part 21 can move relative to the fixed seat 11, and drive the protruding part 22 to move along the radial direction of the positioning hole 111, so as to adjust the axial position of the central through groove 221.

[0035] The pipe body to be drawn can be a pipe body to be drawn, an iron pipe or other tubular component, and the size, material and shape thereof are not limited.

[0036] The self-positioning mold base provided by the utility model, the support part 21 is movably connected with the fixed base 11, so that the support part 21 can be moved flexibly according to the requirements of pipe bodies to be drawn with different diameters, thereby timely driving the protruding part 22 to adjust the position, and the adaptability and working efficiency of the mold base are improved. The positioning hole 111 penetratingly formed on the fixed base 11 provides installation space for the protruding part 22, the design that the inner diameter of the positioning hole 111 is greater than the outer diameter of the protruding part 22 leaves sufficient clearance for the protruding part 22, the protruding part 22 is facilitated to move radially along the positioning hole 111, thereby the axial position of the center through groove 221 can be accurately adjusted, the center line deviation problem caused by the fixed position of the mold base is solved, and the center line of the mold is highly centered with the center line of the pipe body to be drawn when the pipe body to be drawn with different diameters is stretched. The drawing die 300 is coaxially arranged in the center through groove 221, so that the pipe body to be drawn can smoothly pass through, a stable and reliable channel is provided for the stretching of the pipe body to be drawn, and the continuity and stability of the stretching process are ensured.

[0037] The specific structure of the self-positioning mold base will be described below.

[0038] Referring to Figure 3 and Figure 4 , the fixed base 11 is in the shape of a cuboid as a whole, and the positioning hole 111 is formed at the center position of the upper surface. The positioning hole 111 is a cylindrical through hole, and the inner wall thereof is polished to reduce friction and abrasion when the protruding part 22 is in contact.

[0039] Specifically, the support assembly 1 further comprises a universal ball 12, the universal ball 12 is arranged on the fixed base 11, the support part 21 is in contact with the universal ball 12, and the support part 21 is slidably connected with the fixed base 11 through the universal ball 12. The universal ball 12 makes the sliding connection between the support part 21 and the fixed base 11 more flexible and smooth. When the support part 21 is adjusted in position, the universal ball 12 can freely roll in multiple directions, thereby reducing the resistance and jamming phenomenon of the support part 21 during movement.

[0040] More specifically, the universal ball 12 is provided in plurality, and the plurality of universal balls 12 are arranged at intervals along the circumference of the positioning hole 111. The plurality of universal balls 12 jointly bear the pressure and friction force during movement of the support part 21, so that the sliding of the support part 21 is more stable and uniform, the instability and deviation caused by single-point support are avoided, the support part 21 can be more effectively guided to move in the desired direction, and the accuracy and reliability of self-positioning of the mold base are further improved.

[0041] Exemplarily, the number of universal balls 12 is greater than or equal to six and less than or equal to eight. The number of universal balls 12 can be six, seven, eight, etc., and the specific number is not limited herein.

[0042] Exemplarily, the diameter of the universal ball 12 is greater than or equal to 15 mm and less than or equal to 30 mm, the material of the universal ball 12 uses high-hard bearing steel, and the load of a single universal ball 12 is greater than or equal to 50 kg and less than or equal to 300 kg.

[0043] In order to facilitate the fixing of the universal ball 12, the support assembly 1 further comprises a ball seat 13, and one mounting groove 112 is arranged on the fixing seat 11 corresponding to each universal ball 12. Each mounting groove 112 is provided with a ball seat 13, and the universal ball 12 is arranged in the ball seat 13, thereby ensuring that the universal ball 12 is installed firmly and accurately positioned, avoiding phenomena such as deviation or dislocation during work, and providing reliable protection for the stable sliding of the support part 21. A plurality of rolling balls 14 are arranged between the universal ball 12 and the ball seat 13, which reduces the friction of the universal ball 12 rotating, makes the universal ball 12 move more flexible and smooth, and drives the support part 21 to move more agilely and accurately.

[0044] In order to further improve the stability of the support part 21 during movement, the support assembly 1 further comprises an arc-shaped pad 16 arranged at the bottom of the support part 21, and the arc surface of the arc-shaped pad 16 is in contact with the support part 21. The arc-shaped pad 16 provides more uniform and stable support for the support part 21, effectively disperses the pressure borne by the support part 21, reduces local stress concentration, and thereby prolongs the service life of the support part 21. The contact mode of the arc surface enables the support part 21 to slide more smoothly during movement, reduces frictional resistance, and improves the efficiency and accuracy of self-positioning adjustment of the mold seat. In addition, the arc-shaped pad 16 can also play a certain buffering role for the support part 21, absorbing the vibration and impact generated during work.

[0045] In addition, a limiting plate 15 is arranged on the outer periphery of the fixing seat 11, and the limiting plate 15 comprises a horizontal plate 151 and a vertical plate 152 arranged in an L shape. The horizontal plate 151 is used to limit the axial movement of the support part 21 relative to the positioning hole 111, and the vertical plate 152 is used to limit the radial movement of the support part 21 relative to the positioning hole 111. The horizontal plate 151 can limit the axial movement of the support part 21 relative to the positioning hole 111, avoid unnecessary displacement of the support part 21 in the axial direction, and ensure the stability and reliability of the mold seat during work. The vertical plate 152 can limit the excessive radial movement of the support part 21 relative to the positioning hole 111, thereby ensuring that the support part 21 drives the protruding part 22 to make accurate and moderate radial position adjustment.

[0046] Specifically, the distance between the edge of the support part 21 and the vertical plate 152 is a first distance value, which is greater than or equal to 3 mm and less than or equal to 10 mm. The setting range of the first distance value provides a proper space for the radial movement of the support part 21, while preventing excessive movement of the support part 21, avoiding misalignment due to excessive movement, and ensuring the accuracy and stability of the self-positioning of the mold seat assembly 2.

[0047] Exemplarily, the first distance value can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm.

[0048] More specifically, the distance between the outer wall of the protruding part 22 and the inner wall of the positioning hole 111 is a second distance value, which is greater than or equal to 3 mm and less than or equal to 10 mm. This distance range provides sufficient space for the radial movement of the protruding part 22 in the positioning hole 111, enabling it to respond flexibly to the stretching needs of different pipe diameters of the pipe body to be drawn, ensuring accurate adjustment of the axis position of the central through slot 221. At the same time, it avoids the problem of unstable movement and inaccurate positioning of the protruding part 22 caused by excessive distance. Within the range of 3 mm to 10 mm, the movement amplitude of the protruding part 22 can be effectively controlled, ensuring its stability and accuracy of movement, reducing deviations and vibrations caused by unreasonable distance, thereby improving the self-positioning performance and working precision of the mold seat.

[0049] Exemplarily, the second distance value can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm.

[0050] Referring to Figure 5 , the support part 21 and the protruding part 22 are integrally formed, the support part 21 is in a plate structure, and the protruding part 22 is in a cylindrical shape with a diameter smaller than the width of the support part 21. One end of the protruding part 22 is connected to the support part 21, and the other end extends into the positioning hole 111.

[0051] Specifically, the protruding part 22 has a clamping groove 222 at one end close to the support part 21, and the drawing die 300 can be detachably embedded in the clamping groove 222. When the drawing die 300 is worn or damaged, it can be quickly disassembled and replaced to improve production efficiency. The fixing method of the clamping groove 222 can ensure the stability of the drawing die 300 during work, avoiding displacement or loosening, thereby ensuring the accuracy and quality of the stretching of the pipe body to be drawn.

[0052] In the embodiment, the drawing die 300 is made of high-strength wear-resistant hard alloy material and has a cylindrical shape as a whole. An inside of the drawing die 300 is provided with a tapered channel which is gradually tapered in an axial direction. The channel has a large inlet diameter and a small outlet diameter to gradually stretch the pipe body to be drawn. The drawing die 300 has an outer diameter matched with the size of the clamping groove 222 and can be tightly fitted in the clamping groove 222.

[0053] Specifically, the outer surface of the drawing die 300 is provided with uniformly distributed heat dissipation grooves to improve the heat dissipation performance during the stretching of the pipe body to be drawn and prevent the die from being overheated to affect the service life and the stretching quality.

[0054] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited to the above embodiments. Without departing from the spirit and scope of the present application, various changes and modifications can be made to the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-locating mold base characterized by, The utility model relates to a support assembly (1) and a die seat assembly (2) which are used for adjusting the axial line position of a center through groove (221) of the die seat assembly (2). The support assembly (1) comprises a fixing seat (11) having a positioning hole (111) formed through the fixing seat (11); the die seat assembly (2) comprises a support part (21) and a protruding part (22), the protruding part (22) is connected with the support part (21), the support part (21) is movably connected with the fixing seat (11), the protruding part (22) is arranged in the positioning hole (111), the inner diameter of the positioning hole (111) is larger than the outer diameter of the protruding part (22), a center through groove (221) is formed through the middle part of the protruding part (22) along the axial direction of the protruding part (22), a drawing die (300) is coaxially arranged in the center through groove (221), and a pipe body to be drawn can be arranged in the center through groove (221) and the drawing die (300); the support part (21) can move relative to the fixing seat (11) to drive the protruding part (22) to move along the radial direction of the positioning hole (111) so as to adjust the axial line position of the center through groove (221). The support assembly (1) further comprises universal balls (12), the universal balls (12) are arranged on the fixing seat (11), the support part (21) is in contact with the universal balls (12), and the support part (21) is slidably connected with the fixing seat (11) through the universal balls (12).

2. The self-positioning mold seat of claim 1, wherein, The universal balls (12) are arranged in a plurality of forms, and the universal balls (12) are arranged in a circumferential interval along the positioning hole (111).

3. The self-positioning mold seat of claim 2, wherein, The number of the universal balls (12) is greater than or equal to six and less than or equal to eight.

4. The self-positioning mold nest of claim 3, wherein, The support assembly (1) further comprises ball seats (13), one mounting groove (112) is arranged on the fixing seat (11) corresponding to each universal ball (12), one ball seat (13) is arranged in each mounting groove (112), the universal ball (12) is arranged in the ball seat (13), and a plurality of balls (14) are arranged between the universal ball (12) and the ball seat (13).

5. The self-positioning mold nest of claim 2, wherein, A limiting plate (15) is arranged on the outer periphery of the fixing seat (11), the limiting plate (15) comprises a horizontal plate (151) and a vertical plate (152), the horizontal plate (151) and the vertical plate (152) are arranged in an L shape, the horizontal plate (151) is used for limiting the axial movement of the support part (21) relative to the positioning hole (111), and the vertical plate (152) is used for limiting the radial movement of the support part (21) relative to the positioning hole (111).

6. The self-positioning mold nest of claim 1 wherein, The distance between the edge of the support part (21) and the vertical plate (152) is a first distance value, the first distance value is greater than or equal to 3 mm and less than or equal to 10 mm.

7. The self-positioning mold nest of claim 6, wherein, The distance between the outer wall of the protruding part (22) and the inner wall of the positioning hole (111) is a second distance value, the second distance value is greater than or equal to 3 mm and less than or equal to 10 mm.

8. The self-positioning mold nest of claim 1, wherein, The support assembly (1) further comprises an arc-shaped pad (16), the arc-shaped pad (16) is arranged at the bottom of the support part (21), and the arc-shaped surface of the arc-shaped pad (16) is in contact with the support part (21).

9. A self-locating mold nest according to any of claims 1-8, wherein, ​ 10. A self-locating mold nest according to any of claims 1-8, wherein, The protruding part (22) is provided with a clamping groove (222) near one end of the supporting part (21), and the drawing die (300) is detachably embedded in the clamping groove (222).

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