Upper demolding structure of long-stroke seamless tube

Abstract

The utility model discloses an upper demolding structure of a long-stroke seamless tube, the upper demolding structure comprises a linear demolding device capable of performing linear reciprocating motion and a demolding transmission device, the moving direction of the linear demolding device is parallel to the demolding moving direction of the seamless tube, and the linear demolding device is fixedly connected with one end of the demolding transmission device; when demolding is needed, the demolding transmission device is in contact connection with the top end of the seamless pipe, the demolding transmission device transmits demolding power of the linear demolding device to the seamless pipe to achieve seamless pipe demolding, and the linear demolding device linearly moves in the demolding direction of the seamless pipe to achieve demolding. Force is applied in parallel in the seamless tube demolding direction, the utilization efficiency of the acting force is the highest, the linear demolding device comprises a moving part capable of moving in a reciprocating mode and a power part providing moving power for the moving part, a hydraulic cylinder is preferably selected, and the hydraulic cylinder is simple in structure, easy to operate, stable in operation and high in economical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless pipe processing, in particular to a long-stroke seamless pipe demoulding structure for upper die. Background Art

[0002] A seamless pipe is a long pipe with a hollow cross-section and no seams around it. Its material can be aluminum alloy, carbon steel, alloy steel, stainless steel, etc. Different from welded pipes, seamless pipes do not require welding during the production process, so there cannot be weld seams. From the appearance, seamless pipes are smoother than welded pipes and have no obvious weld marks.

[0003] The production processes of seamless pipes mainly include rolling method, extrusion method, drawing method, forging method, etc.

[0004] 1. Rolling method: The rolling method is the most common method for producing seamless pipes. In this method, the billet is heated to a certain temperature and then rolled, and then formed by a shaping machine, and finally cooled. The seamless pipes produced by the rolling method have uniform wall thickness, but the production efficiency is low.

[0005] 2. Extrusion method: The extrusion method is to produce seamless pipes by pressing the heated billet into a tubular shape. The extrusion method can produce seamless pipes with large diameters, but there are problems such as tube deformation and uneven wall thickness during the production process.

[0006] 3. Drawing method: The drawing method is a process of stretching the heated billet into a tubular shape. The seamless pipes produced by this method have uniform wall thickness and smooth surface, but the production cost is high and the production efficiency is low. The seamless pipes produced by the drawing method are mainly used for high-precision mechanical parts.

[0007] 4. Forging method: The forging method is to produce seamless pipes by forging the heated billet. The seamless pipes produced by the forging method have uniform wall thickness, smooth surface, no pores and no impurities, and have high toughness and high strength. However, the production cost of the forging method is relatively high, and it is only suitable for producing seamless pipes on a small scale.

[0008] In the technology of manufacturing large-diameter aluminum alloy seamless pipes by the relevant forging method, the seamless pipe forging machine includes an upper die seat and a lower die seat. An upper die column and a lower die cavity are arranged between the upper die seat and the lower die seat. A billet for forging seamless pipes is placed in the lower die cavity. The upper die column repeatedly punches the billet in the lower die cavity up and down under pressure, so that seamless pipes of corresponding specifications can be made.

[0009] As Figure 1 shown, after the seamless pipe is stamped and manufactured, the seamless pipe moves upward with the upper die column. When the upper die column rises to the top, a demoulding device is arranged beside the forging machine, usually a demoulding arm. The demoulding arm exerts force downward on the top of the seamless pipe to separate the seamless pipe from the upper die column, so as to achieve demoulding.

[0010] In this demoulding method, the mechanical demoulding arm moves in a curve, resulting in low working efficiency, low utilization efficiency of the acting force, complex structure of the mechanical demoulding arm, high manufacturing cost, and high maintenance rate during operation. Summary of the Invention

[0011] In view of the problems in the related art, the present application discloses an upper demoulding structure for a long-stroke seamless pipe, which solves the problems of low demoulding efficiency and high economic cost of seamless pipes in the related art.

[0012] To achieve the above object, the present application provides the following technical solutions:

[0013] An upper demoulding structure for a long-stroke seamless pipe includes a lower die base and an upper die base. A lower die cavity is provided in the upper part of the lower die base, and the lower die cavity is a U-shaped cavity structure. An upper die post connected to a power mechanism is provided in the lower part of the upper die base. The upper die post can be pressed downward under the action of the power mechanism to manufacture a seamless pipe. The upper demoulding structure includes a linear demoulding device that can move linearly in a reciprocating manner. The moving direction of the linear demoulding device is parallel to the demoulding moving direction of the seamless pipe. It also includes a demoulding transmission device. One end of the linear demoulding device is fixedly connected to the demoulding transmission device, and the other end of the demoulding transmission device is in contact connection with the seamless pipe. The demoulding transmission device transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve demoulding of the seamless pipe.

[0014] As a further solution of the present application: The linear demoulding device includes a moving part that can move reciprocally, and a power part that provides moving power for the moving part. One end of the moving part is fixedly connected to the demoulding transmission device, and the other end of the moving part is in power connection with the power part. The power part drives the moving part to move linearly in a reciprocating manner, and the moving part drives the demoulding transmission device to move linearly in a reciprocating manner during the moving process.

[0015] As a further solution of the present application: The linear demoulding device is fixedly arranged on the upper part of the lower die base.

[0016] As a further solution of the present application: The linear demoulding device is fixedly arranged on the lower part of the upper die base.

[0017] As a further solution of the present application: The demoulding transmission device includes a transmission rod. The transmission rod is rod-shaped. One end of the transmission rod is fixedly connected to the linear demoulding device, and the other end of the transmission rod is in contact connection with the seamless pipe. The rod-shaped transmission rod transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve demoulding of the seamless pipe.

[0018] As a further solution of the present application: The demoulding transmission device includes a transmission plate which is plate-shaped. The outer side of the transmission plate is fixedly connected to the linear demoulding device. A transmission hole is provided in the center of the transmission plate, and the transmission hole can be sleeved outside the upper die column. The outer edge of the transmission hole can be in contact connection with the seamless pipe. The transmission plate transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve seamless pipe demoulding.

[0019] In summary, the beneficial effects of the present application are as follows:

[0020] 1. The upper demoulding structure of the long-stroke seamless pipe includes a linear demoulding device that can move linearly back and forth and a demoulding transmission device. The moving direction of the linear demoulding device is parallel to the demoulding moving direction of the seamless pipe. One end of the linear demoulding device is fixedly connected to the demoulding transmission device, and the other end of the demoulding transmission device can be in contact connection with the seamless pipe. When demoulding is required, the demoulding transmission device is in contact connection with the top end of the seamless pipe. The demoulding transmission device transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve seamless pipe demoulding. The linear demoulding device moves linearly along the demoulding direction of the seamless pipe to achieve demoulding. By applying force parallel to the demoulding direction of the seamless pipe, the utilization efficiency of the force is the highest. The linear demoulding device includes a movable part that can move back and forth and a power part that provides moving power for the movable part. Preferably, a hydraulic cylinder is used. The hydraulic cylinder has a simple structure, simple operation, stable operation, and high economy.

[0021] 2. The linear demoulding device is fixedly arranged on the upper part of the lower die seat or the lower part of the upper die seat, with a simple structure and high-efficiency demoulding at a short distance.

[0022] 3. The demoulding transmission device includes a rod-shaped transmission rod. One end of the transmission rod is fixedly connected to the linear demoulding device, and the other end of the transmission rod can be in contact connection with the seamless pipe. One or more transmission rods can be provided around the seamless pipe. The transmission rod transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve seamless pipe demoulding, with a simple and efficient structure and stable operation.

[0023] 4. The demoulding transmission device includes a plate-shaped transmission plate. The outer side of the transmission plate is fixedly connected to one or more linear demoulding devices. A transmission hole is provided in the center of the transmission plate, and the transmission hole can be sleeved outside the upper die column. The outer edge of the transmission hole can be in contact connection with the seamless pipe. The transmission plate transmits the demoulding power of the linear demoulding device to the seamless pipe to achieve seamless pipe demoulding, with a simple structure, stable operation, and high-efficiency demoulding. Description of the Drawings

[0024] The drawings are used to provide a further understanding of the present application and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application and do not constitute a limitation to the present application.

[0025] In the drawings:

[0026] Figure 1It is a schematic structural diagram of a demolding device in the related art.

[0027] Figure 2 It is a schematic structural diagram of the upper part of a linear demolding device for a long-stroke seamless pipe demolding structure in the present application.

[0028] Figure 3 It is a schematic structural diagram of the lower part of a linear demolding device for a long-stroke seamless pipe demolding structure in the present application.

[0029] Figure 4 It is a schematic structural diagram of a transfer plate for a long-stroke seamless pipe demolding structure in the present application.

[0030] Figure 5 It is a schematic structural diagram of a transfer rod for a long-stroke seamless pipe demolding structure in the present application.

[0031] Annotation of reference numerals:

[0032] 1. Lower die base; 2. Upper die base; 3. Lower die cavity; 4. Upper die post; 5. Seamless pipe; 6. Demolding arm; 7. Linear demolding device; 71. Moving part; 72. Power part; 8. Demolding transfer device; 81. Transfer rod; 82. Transfer plate; 83. Transfer hole; Detailed implementation manners

[0033] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects disclosed in this embodiment as detailed in the appended claims.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0035] In addition, in the embodiments, descriptions such as "first" and "second" are for descriptive purposes only, and do not particularly refer to the order or sequence, nor are they used to limit this application. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] To further understand the content, features and effects of this application, the following embodiments are exemplified and described in detail with reference to the accompanying drawings as follows:

[0037] As Figure 2 - 5 shown:

[0038] The demolding structure for a long-stroke seamless tube 5 includes a lower die base 1 and an upper die base 2. A lower die cavity 3 is provided in the upper part of the lower die base 1. The lower die cavity 3 is a U-shaped cavity structure. An upper die post 4 connected to a power mechanism is provided in the lower part of the upper die base 2. The upper die post 4 can be pressed downward under the action of the power mechanism to manufacture the seamless tube 5.

[0039] The upper demolding structure includes a linear demolding device 7 that can move linearly in a reciprocating manner. The moving direction of the linear demolding device 7 is parallel to the demolding moving direction of the seamless tube 5. It also includes a demolding transmission device 8. One end of the linear demolding device 7 is fixedly connected to the demolding transmission device 8. The other end of the demolding transmission device 8 is in contact connection with the seamless tube 5. The demolding transmission device 8 transmits the demolding power of the linear demolding device 7 to the seamless tube 5 to achieve demolding of the seamless tube 5.

[0040] Among them, the linear demolding device 7 includes a moving part 71 that can move reciprocally, and a power part 72 that provides moving power for the moving part 71. Preferably, it is a hydraulic cylinder. One end of the moving part 71 is fixedly connected to the demolding transmission device 8. The other end of the moving part 71 is power-connected to the power part 72. The power part 72 drives the moving part 71 to move linearly in a reciprocating manner. The moving part 71 drives the demolding transmission device 8 to move linearly in a reciprocating manner during the moving process.

[0041] As Figure 3 shown: The linear demolding device 7, preferably a hydraulic cylinder, is fixedly arranged on the upper part of the lower die base 1.

[0042] As Figure 2 shown: The linear demolding device 7, preferably a hydraulic cylinder, is fixedly arranged on the lower part of the upper die base 2.

[0043] Among them, as Figure 5As shown: The demolding transfer device 8 includes a transfer rod 81. The transfer rod 81 is rod-shaped. One end of the transfer rod 81 is fixedly connected to the hydraulic cylinder. There are four hydraulic cylinders around the upper die column 4. The other end of the transfer rod 81 is in contact connection with the seamless pipe 5. After the seamless pipe 5 is manufactured, the transfer rod 81 moves downward to contact the top of the seamless pipe 5. The rod-shaped transfer rod 81 transfers the demolding power of the hydraulic cylinder to the seamless pipe 5 to achieve demolding of the seamless pipe 5.

[0044] As Figure 4 shown: The demolding transfer device 8 includes a transfer plate 82. The transfer plate 82 is plate-shaped. The outside of the transfer plate 82 is fixedly connected to the hydraulic cylinder. There is a transfer hole 83 in the center of the transfer plate 82. The transfer hole 83 can be sleeved outside the upper die column 4. The outer edge of the transfer hole 83 is in contact connection with the seamless pipe 5. After the seamless pipe 5 is manufactured, the transfer plate 82 moves downward to contact the top of the seamless pipe 5. The transfer plate 82 transfers the demolding power of the hydraulic cylinder to the seamless pipe 5 to achieve demolding of the seamless pipe 5.

[0045] In practical applications:

[0046] The upper demolding structure of the long-stroke seamless pipe 5 includes a linear demolding device 7 that can move linearly back and forth and a demolding transfer device 8. The moving direction of the linear demolding device 7 is parallel to the demolding moving direction of the seamless pipe 5. The linear demolding device 7 is fixedly connected to one end of the demolding transfer device 8. The other end of the demolding transfer device 8 is in contact connection with the seamless pipe 5. When demolding is required, the demolding transfer device 8 is in contact connection with the top of the seamless pipe 5. The demolding transfer device 8 transfers the demolding power of the linear demolding device 7 to the seamless pipe 5 to achieve demolding of the seamless pipe 5. The linear demolding device 7 moves linearly along the demolding direction of the seamless pipe 5 to achieve demolding. Applying force parallel to the demolding direction of the seamless pipe 5, the utilization efficiency of the force is the highest. The linear demolding device 7 includes a moving part 71 that can move back and forth, and a power part 72 that provides moving power for the moving part 71. Preferably, a hydraulic cylinder is used. The hydraulic cylinder has a simple structure, simple operation, stable operation, and high economy.

[0047] The linear demolding device 7 is fixedly arranged on the upper part of the lower die base 1 or the lower part of the upper die base 2, with a simple structure and high-efficiency demolding at a short distance.

[0048] The demolding transfer device 8 includes a rod-shaped transfer rod 81. One end of the transfer rod 81 is fixedly connected to the linear demolding device 7. The other end of the transfer rod 81 is in contact connection with the seamless pipe 5. There can be one or more transfer rods 81 around the seamless pipe 5. The transfer rod 81 transfers the demolding power of the linear demolding device 7 to the seamless pipe 5 to achieve demolding of the seamless pipe 5, with a simple and efficient structure and stable operation.

[0049] The demolding transfer device 8 includes a plate-shaped transfer plate 82. The outside of the transfer plate 82 is fixedly connected to one or more linear demolding devices 7. A transfer hole 83 is provided at the center of the transfer plate 82. The transfer hole 83 can be sleeved outside the upper die post 4. The outer edge of the transfer hole 83 can be in contact connection with the seamless tube 5. The transfer plate 82 transfers the demolding power of the linear demolding device 7 to the seamless tube 5 to realize the demolding of the seamless tube 5. The structure is simple, the operation is stable, and the demolding is efficient.

[0050] Finally, it should be noted that the above disclosure is only the preferred embodiment of the present application and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. The scope of the present application is only limited by the appended claims.

Claims

1. A long-stroke seamless pipe upper demoulding structure, comprising a lower die base (1) and an upper die base (2), wherein the upper portion of the lower die base (1) is provided with a lower die cavity (3), wherein the lower die cavity (3) is a U-shaped cavity structure, and the lower portion of the upper die base (2) is provided with an upper die column (4) connected to a power mechanism, wherein the upper die column (4) can be pressed downward to produce a seamless pipe (5) under the action of the power mechanism, and wherein the characteristics are: The upper demoulding structure comprises a linear demoulding device (7) capable of linear reciprocating motion, wherein the moving direction of the linear demoulding device (7) is parallel to the demoulding moving direction of the seamless pipe (5), and further comprises a demoulding transmission device (8), wherein the linear demoulding device (7) is fixedly connected to one end of the demoulding transmission device (8), and the other end of the demoulding transmission device (8) is contactably connected to the seamless pipe (5), and the demoulding transmission device (8) transmits the demoulding power of the linear demoulding device (7) to the seamless pipe (5) to realize demoulding of the seamless pipe (5).

2. The demoulding structure for a long-stroke seamless pipe according to claim 1, characterized in that: The linear demoulding device (7) comprises a moving part (71) that can move back and forth, and a power part (72) that provides moving power for the moving part (71); one end of the moving part (71) is fixedly connected to the demoulding transmission device (8); the other end of the moving part (71) is connected to the power part (72); the power part (72) drives the moving part (71) to move back and forth linearly; and the moving part (71) drives the demoulding transmission device (8) to move back and forth linearly during the moving process.

3. The demoulding structure for a long-stroke seamless pipe according to claim 1, characterized in that: The linear demoulding device (7) is fixedly arranged on the upper part of the lower mold base (1).

4. The demoulding structure for a long-stroke seamless pipe according to claim 1, characterized in that: The linear demoulding device (7) is fixedly arranged at the lower part of the upper mold base (2).

5. The demoulding structure for a long-stroke seamless pipe according to claim 1, characterized in that: The demoulding transmission device (8) comprises a transmission rod (81), which is rod-shaped. One end of the transmission rod (81) is fixedly connected to the linear demoulding device (7), and the other end of the transmission rod (81) is contactably connected to the seamless pipe (5). The rod-shaped transmission rod (81) transmits the demoulding power of the linear demoulding device (7) to the seamless pipe (5) to realize demoulding of the seamless pipe (5).

6. The demoulding structure for a long-stroke seamless pipe according to claim 1, characterized in that: The demoulding transmission device (8) comprises a transmission plate (82), which is in the shape of a plate. The outer side of the transmission plate (82) is fixedly connected to the linear demoulding device (7). A transmission hole (83) is provided at the center of the transmission plate (82). The transmission hole (83) can be sleeved on the outside of the upper mold column (4). The outer edge of the transmission hole (83) can be in contact with and connected to the seamless pipe (5). The transmission plate (82) transmits the demoulding power of the linear demoulding device (7) to the seamless pipe (5) to realize demoulding of the seamless pipe (5).

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