Stainless steel double-cone slender rod die

Abstract

The utility model relates to the technical field of dies, in particular to a stainless steel double-cone slender rod die. Comprising an upper die, a first lower die and a second lower die which are opposite are arranged below the upper die in a matched mode, an anti-deviation rod is arranged in an inner cavity of the first lower die in the axial direction, and a rod hole matched with the anti-deviation rod is formed in the upper die in the axial direction; fixing assemblies are oppositely arranged at the upper parts of the first lower mold and the second lower mold and are used for preventing the raw material pipe from shaking; the anti-deviation rod and the rod hole are bidirectionally matched to form axial constraint, and the inner cavity of the first lower die and the inner cavity of the second lower die are precisely matched with the outer wall of a product, so that radial deviation of the slender rod in the stamping process is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to die technical field especially is related to a stainless steel double taper slender rod die. BACKGROUND

[0002] The stainless steel double taper slender rod is a hollow tubular structure with tapered ends, commonly used in the cyclone separation process, also known as a cyclone tube. The overall structure of the stainless steel double taper slender rod is slender, and two-phase separation is achieved through centrifugal force. The slender structure can extend the rotational path of the fluid in the tube, allowing particles to obtain more complete centrifugal acceleration, facilitating separation.

[0003] During the stamping process, the stainless steel double taper slender rod has a slender structure, and the upper die for stamping is also slender. After forming, the surface of the stainless steel double taper slender rod should be smooth and free of distortion, and the wall thickness should be uniform. Therefore, the stamping of the upper die and the lower die should be kept on the same axis. According to actual measurements, if there is a deviation in the center, that is, the axis of the upper and lower dies deviates more than ±0.1 mm, the wall thickness difference of the workpiece can reach 15%, which seriously affects the separation efficiency.

[0004] Therefore, the present application provides a stainless steel double taper slender rod die to solve the problems raised in the background. SUMMARY

[0005] The utility model aims at providing a stainless steel double taper slender rod die to solve the problem of uneven wall thickness of the existing double taper slender rod die due to its slender structure, which causes the axis of the upper and lower dies to deviate during the stamping process.

[0006] To solve the above technical problems, the utility model provides a stainless steel double taper slender rod die, which includes an upper die, a first lower die and a second lower die arranged oppositely below the upper die, an inner cavity of the first lower die is arranged along the axial direction to prevent deviation of the rod, and a rod hole is opened in the axial direction of the upper die to adapt to the anti-deviation rod.

[0007] The upper parts of the first lower die and the second lower die are oppositely arranged with a fixed component, which is used to prevent the raw material pipe from shaking.

[0008] The further improvement of the technical scheme of the utility model is that the upper die includes a hydraulic rod joint, a baffle and a die rod arranged in sequence from top to bottom, the hydraulic rod joint, the baffle and the die rod are integrally arranged, the baffle is perpendicular to the axial direction of the die rod, a plurality of first positioning holes are opened in the axial direction of the die rod on the baffle, and the outer side wall of the die rod is adapted to the inner side wall of the stainless steel double taper slender rod.

[0009] A further improvement of the present invention is that: the first lower mold and the second lower mold are engaged with each other, the inner sidewalls of the first lower mold and the second lower mold are adapted to the outer sidewall of the stainless steel double-cone slender rod, and an anti-deviation rod is fixedly provided at the bottom of the first lower mold, extending along the axial direction of the first lower mold to the upper part of the first lower mold.

[0010] A further improvement of this utility model is that a first positioning pin is provided on the first lower mold and the second lower mold with a first positioning hole adapted to it.

[0011] A further improvement of this utility model is that: the engaging surface of the first lower mold is provided with multiple second positioning pins, and the second lower mold is provided with positioning holes corresponding to the multiple second positioning pins.

[0012] A further improvement of the present invention is that a fixing component is embedded in the upper part of the first lower mold and the second lower mold respectively, and the fixing component fixes and supports the upper end of the stainless steel double-cone slender rod.

[0013] A further improvement of the present invention is that the fixing component includes symmetrically opened limiting grooves in the first lower mold and the second lower mold, a telescopic rod controlled by a spring is provided in the limiting groove, limiting plates are symmetrically arranged on both sides of the telescopic rod, and a fixing head is provided at the end of the telescopic rod, the arc surface of the fixing head is adapted to the inner arc surface of the first lower mold.

[0014] A further improvement of the present invention is that: cooling grooves are formed along the outer contour of the stainless steel double-cone slender rod on the first and second lower molds, and multiple cooling holes are provided through the cooling grooves.

[0015] A further improvement to the technical solution of this utility model is that handles are symmetrically arranged on the first lower mold and the second lower mold.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This utility model provides a stainless steel double-cone slender rod mold. The anti-deviation rod of the mold and the rod hole cooperate in both directions to form axial constraint. Combined with the precise fit between the inner cavity of the first lower mold and the second lower mold and the outer wall of the product, it effectively prevents the slender rod from radially deviating during the stamping process. This structure can control the eccentricity error within ±0.05mm.

[0018] 2. The present invention provides a stainless steel double-cone slender rod mold. The integrated structure of the hydraulic rod connector and the mold rod ensures the linearity of pressure transmission. With the help of multiple first positioning holes on the baffle, the mold can be accurately positioned. The second positioning pin and the second positioning hole form a two-stage positioning mechanism, so that the mold closing accuracy reaches 0.02mm level. It is particularly suitable for stamping slender rods with a length-to-diameter ratio > 15:1.

[0019] 3. The utility model provides a kind of stainless steel double-cone slender rod mould, the fixed component of this mould realizes the upper part of raw material pipe and is fixed and supported, it is favorable to prevent raw material pipe from vibrating, specifically, the diameter of raw material pipe is slightly larger than the diameter of mould rod bottom end, in the stamping process, raw material pipe is inserted into the anti-deviation rod first, the upper mould is slowly moved downward under the impetus of hydraulic machine, the mould rod bottom end of upper mould is inserted into the inner cavity of raw material pipe, raw material pipe is downward hot-stamping, the outside wall of raw material pipe is in contact with fixed head, with raw material pipe constantly thickening, fixed head relatively moves away;The whole raw material pipe is stretched and thickened during hot-stamping, fixed head is always in contact with follow-up movement, the length of fixed head is consistent with the length of limiting groove, fixed head is completely embedded into limiting groove, the camber of fixed head is adapted to the inner camber of first lower mould.

[0020] 4. The utility model provides a kind of stainless steel double-cone slender rod mould, cooling groove and cooling hole are set along the outer contour of stainless steel double-cone slender rod in this mould, form symmetrical cooling runner, three-dimensional heat dissipation network is formed by surrounding type cooling groove cooperation cooling hole, and mould cooling speed is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 It is a whole schematic view of a kind of stainless steel double-cone slender rod mould;

[0023] Figure 2 It is the structure schematic view of the upper mould of the utility model;

[0024] Figure 3 It is Figure 2 The structure schematic view of part A;

[0025] Figure 4 It is the structure schematic view of the first lower mould of the utility model;

[0026] Figure 5 It is the front view of a kind of stainless steel double-cone slender rod mould;

[0027] Figure 6 It is the sectional view of a kind of stainless steel double-cone slender rod mould;

[0028] Figure 7 It is the structure schematic view of the fixed component of the utility model.

[0029] Sign: 1, upper die; 11, hydraulic rod joint; 12, baffle; 13, die rod; 2, first positioning hole; 3, first positioning pin; 4, first lower die; 41, second positioning pin; 5, second lower die; 51, second positioning hole; 6, anti-deviation rod; 7, rod hole; 8, fixing assembly; 81, limiting groove; 82, spring; 83, telescopic rod; 84, limiting sheet; 85, fixed head; 86, cooling groove; 87, cooling hole; 88, handle. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The present application will be further explained and described below in conjunction with specific embodiments.

[0034] As Figures 1-7As shown, the embodiment provides a stainless steel double-cone slender rod mold, which comprises an upper mold 1, and a first lower mold 4 and a second lower mold 5 arranged below the upper mold 1. An inner cavity of the first lower mold 4 is provided with an anti-deviation rod 6 along the axial direction, and a rod hole 7 of the upper mold 1 is provided with the anti-deviation rod 6 along the axial direction. The upper parts of the first lower mold 4 and the second lower mold 5 are provided with a fixing assembly 8 in a relative manner, and the fixing assembly 8 is used for preventing the raw material pipe from shaking. The raw material pipe used in the mold is a 304 stainless steel pipe with uniform thickness, and has high ductility (elongation ≥40%) after heating.

[0035] As shown in the figure, Figures 1-3 In the embodiment, the upper mold 1 comprises a hydraulic rod joint 11, a baffle 12 and a mold rod 13 arranged in sequence from top to bottom. The hydraulic rod joint 11, the baffle 12 and the mold rod 13 are integrally arranged. The upper end of the hydraulic rod joint 11 is connected with a hydraulic machine. The baffle 12 is perpendicular to the axial direction of the mold rod 13. A plurality of first positioning holes 2 are arranged on the baffle 12 along the axial direction of the mold rod 13. A first positioning pin 3 is arranged on the first lower mold 4 and the second lower mold 5 in a matched manner with the first positioning hole 2. The first positioning pin 3 and the first positioning hole 2 form axial constraint in cooperation. The outer side wall of the mold rod 13 is matched with the inner side wall of the stainless steel double-cone slender rod. The integrated structure of the hydraulic rod joint 11 and the mold rod 13 of the mold ensures the linearity of pressure transmission, and realizes accurate alignment of the mold in cooperation with the plurality of first positioning holes 2 on the baffle 12. The second positioning pin 41 and the second positioning hole 51 form a two-stage positioning mechanism, so that the mold closing accuracy reaches the level of 0.02 mm, and the mold is particularly suitable for stamping of slender rods with a length-diameter ratio of >15:1.

[0036] As shown in the figure, Figure 1 , Figure 4 , Figure 5 In the embodiment, the first lower mold 4 and the second lower mold 5 are arranged in a relative clamping manner. The inner side walls of the first lower mold 4 and the second lower mold 5 are matched with the outer side wall of the stainless steel double-cone slender rod. The anti-deviation rod 6 is fixedly arranged at the bottom of the first lower mold 4 and extends to the upper part of the first lower mold 4 along the axial direction of the first lower mold 4. The anti-deviation rod 6 of the mold forms axial constraint in cooperation with the rod hole 7. In combination with the accurate matching of the inner cavities of the first lower mold 4 and the second lower mold 5 and the outer wall of the product, the radial deviation of the slender rod in the stamping process is effectively prevented. The eccentric error can be controlled within ±0.05 mm.

[0037] As shown in the figure, Figures 4-7As shown, in this embodiment, the engaging surface of the first lower mold 4 is provided with multiple second positioning pins 41, and the second lower mold 5 is provided with second positioning holes 51 corresponding to the multiple second positioning pins 41. The second positioning pins 41 and the second positioning holes 51 cooperate to form a radial constraint, tightly engaging the first lower mold 4 and the second lower mold 5. A fixing component 8 is embedded through the upper part of the first lower mold 4 and the second lower mold 5, and the fixing component 8 fixes and supports the upper end of the stainless steel double-cone slender rod. The fixing component 8 includes symmetrically opened limiting grooves 81 in the first lower mold 4 and the second lower mold 5. A telescopic rod 83 controlled by a spring 82 is provided in the limiting groove 81. Limiting plates 84 are symmetrically arranged on both sides of the telescopic rod 83. A fixing head 85 is provided at the end of the telescopic rod 83. The arc surface on the fixing head 85 is adapted to the inner arc surface of the first lower mold 4. The limiting plates 84 prevent the fixing head 85 from rotating, so that the arc surface on the fixing head 85 is smoothly embedded into the inner arc surface of the first lower mold 4. The fixing component 8 of the mold provides fixed support for the upper part of the raw material pipe, which helps to prevent the raw material pipe from vibrating. Specifically, the diameter of the raw material pipe is slightly larger than the diameter of the bottom end of the die rod 13. During the stamping process, the raw material pipe is first inserted into the anti-deviation rod 6. The upper die 1 moves slowly downward under the push of the hydraulic press. The bottom end of the die rod 13 of the upper die 1 is inserted into the inner cavity of the raw material pipe, and the raw material pipe is hot-stamped downward. The outer wall of the raw material pipe abuts against the fixing head 85. As the raw material pipe becomes thicker, the fixing head 85 moves away from it. Throughout the process of the hot-stamped raw material pipe extending and thickening, the fixing head 85 always abuts against and follows the movement. The length of the fixing head 85 is consistent with the length of the limiting groove 81. The fixing head 85 is completely embedded in the limiting groove 81. The arc surface on the fixing head 85 is adapted to the inner arc surface of the first lower die 4.

[0038] like Figure 4 As shown, in this embodiment, cooling grooves 86 are formed along the outer contour of the stainless steel double-cone slender rod on the first lower mold 4 and the second lower mold 5, and multiple cooling holes 87 are provided through the cooling grooves 86. The cooling grooves 86 and cooling holes 87 formed along the outer contour of the stainless steel double-cone slender rod create symmetrical cooling channels. The surrounding cooling grooves 86 and cooling holes 87 form a three-dimensional heat dissipation network, accelerating the cooling speed of the mold. Handles 88 are symmetrically provided on the first lower mold 4 and the second lower mold 5 for easy movement.

[0039] The working principle of the technical solution provided by this utility model is as follows:

[0040] The operator first inserts the raw material pipe into the anti-deviation rod 6. The upper mold 1 moves slowly downward under the push of the hydraulic press. The rod hole 7 of the mold rod 13 is aligned with the anti-deviation rod 6 and they pass through each other. The bidirectional cooperation between the anti-deviation rod 6 and the rod hole 7 forms an axial constraint to prevent the slender rod from radially deviating during the stamping process. The first positioning pin 3 and the first positioning hole 2 cooperate to further strengthen the axial constraint.

[0041] The bottom end of the die rod 13 of the upper die 1 is inserted into the inner cavity of the raw material pipe, and the raw material pipe is hot-stamped downward, the outer wall of the raw material pipe abuts against the fixed head 85, and the fixed head 85 is relatively far away as the raw material pipe is continuously thickened; during the whole extension and thickening process of the raw material pipe, the fixed head 85 always abuts against the movement, the length of the fixed head 85 is consistent with the length of the limiting groove 81, the fixed head 85 is completely embedded into the limiting groove 81, and the arc surface on the fixed head 85 is matched with the inner arc surface of the first lower die 4.

[0042] The die is provided with a cooling groove 86 and a cooling hole 87 along the outer contour of the stainless steel double-cone slender rod, a symmetrical cooling flow channel is formed, a three-dimensional heat dissipation network is formed by the surrounding cooling groove 86 and the cooling hole 87, the cooling speed of the die is accelerated, and after stamping is completed, the hydraulic machine drives the upper die 1 upward to perform demolding.

[0043] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A stainless steel double-cone elongated rod mold characterized by, The utility model provides a mould for producing stainless steel double taper slender rod, which comprises an upper mould (1), a first lower mould (4) and a second lower mould (5) are arranged below the upper mould (1), an anti-deviation rod (6) is arranged in the inner cavity of the first lower mould (4) along the axial direction, and a rod hole (7) is formed in the upper mould (1) along the axial direction and is matched with the anti-deviation rod (6); the upper parts of the first lower mould (4) and the second lower mould (5) are matched with a fixing assembly (8), and the fixing assembly (8) is used for preventing the raw material pipe from shaking.

2. A stainless steel double-cone elongated rod die according to claim 1, characterized in that, The upper mould (1) comprises a hydraulic rod joint (11), a baffle (12) and a mould rod (13) which are sequentially arranged from top to bottom, the hydraulic rod joint (11), the baffle (12) and the mould rod (13) are integrally arranged, the baffle (12) is perpendicular to the axial direction of the mould rod (13), a plurality of first positioning holes (2) are formed in the baffle (12) along the axial direction of the mould rod (13), and the outer side wall of the mould rod (13) is matched with the inner side wall of the stainless steel double taper slender rod.

3. A stainless steel double-cone elongated rod die according to claim 1, wherein The first lower mould (4) and the second lower mould (5) are matched and arranged, the inner side walls of the first lower mould (4) and the second lower mould (5) are matched with the outer side wall of the stainless steel double taper slender rod, the anti-deviation rod (6) is fixedly arranged at the bottom of the first lower mould (4) and extends to the upper part of the first lower mould (4) along the axial direction of the first lower mould (4).

4. A stainless steel double-cone elongated rod die according to claim 2, wherein The first positioning holes (2) are arranged on the first lower mould (4) and the second lower mould (5) and matched with first positioning pins (3).

5. A stainless steel double-cone elongated rod die according to claim 1, wherein A plurality of second positioning pins (41) are arranged on the clamping surface of the first lower mould (4), and a second positioning hole (51) is formed in the second lower mould (5) corresponding to the plurality of second positioning pins (41).

6. A stainless steel double-cone elongated rod die according to claim 1, wherein The upper parts of the first lower mould (4) and the second lower mould (5) are embedded and arranged in the fixing assembly (8) in a penetrating mode, and the fixing assembly (8) fixedly supports the upper end of the stainless steel double taper slender rod.

7. A stainless steel double-cone elongated rod die according to claim 6, characterized in that, The fixing assembly (8) comprises limit grooves (81) which are symmetrically formed in the first lower mould (4) and the second lower mould (5), a telescopic rod (83) which is controlled by a spring (82) is arranged in the limit groove (81), limit pieces (84) are symmetrically arranged on the two sides of the telescopic rod (83), a fixing head (85) is arranged at the end of the telescopic rod (83), and the arc surface of the fixing head (85) is matched with the inner arc surface of the first lower mould (4).

8. A stainless steel double-cone elongated rod die according to claim 1, wherein Cooling grooves (86) are formed in the first lower mould (4) and the second lower mould (5) along the outer contour of the stainless steel double taper slender rod, and a plurality of cooling holes (87) are formed in the cooling grooves (86) in a penetrating mode.

9. A stainless steel double-cone elongated rod die according to claim 1, wherein Handles (88) are symmetrically arranged on the first lower mould (4) and the second lower mould (5).

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