Self-centering locking mold for wax mold forming of regulating valve

Abstract

The utility model belongs to the field of mold manufacturing, and provides a self-centering locking mold for regulating valve wax mold forming. Comprising a first module, a second module and a third module. Wherein the first die set comprises a left half die and a right half die which are spliced with each other in the first direction; the second module comprises a front cover plate and a rear cover plate which are arranged at intervals in the second direction, a left half die and a right half die are arranged between the front cover plate and the rear cover plate, first insertion holes extending in the second direction are formed in the left half die and the right half die respectively, and second insertion holes corresponding to the first insertion holes are formed in the front cover plate and the rear cover plate respectively. The second module further comprises a plug pin used for being inserted into the first inserting hole and the second inserting hole. The third module comprises a long cylinder core and a short cylinder core which are coaxially arranged, and further comprises a pull rod detachably connected to the long cylinder core and a nut in threaded connection with the pull rod.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of mold manufacturing, and particularly relates to a self-centering locking mold for wax mold forming of a regulating valve. BACKGROUND

[0002] Wax mold forming of a regulating valve is a precision casting process, and its basic principle is to inject molten wax into a pre-designed mold cavity, and then form a wax mold after the wax cools and solidifies. This wax mold is then used as a core or shell in the casting process, and through the lost wax casting technology, a high-precision regulating valve component can be produced. In the traditional wax mold forming process, in order to achieve accurate closing of the mold and smooth injection of the wax, a complex support structure is usually designed to ensure the stability and positioning accuracy of each part of the mold. However, the complex support structure increases the difficulty and cost of mold manufacturing, which undoubtedly also increases the manufacturing cost of the regulating valve component. Therefore, it is necessary to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a self-centering locking mold for wax mold forming of a regulating valve, so as to solve the technical problem of high manufacturing cost of the mold for wax mold forming of the regulating valve in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is: a self-centering locking mold for wax mold forming of a regulating valve is provided, comprising:

[0005] A first mold set, comprising a left half mold and a right half mold which are spliced with each other along a first direction;

[0006] A second mold set, comprising a front cover plate and a rear cover plate which are arranged at intervals along a second direction, the second direction being perpendicular to the first direction, the left half mold and the right half mold being arranged between the front cover plate and the rear cover plate, the left half mold and the right half mold being respectively provided with first insertion holes extending along the second direction, the front cover plate and the rear cover plate being respectively provided with second insertion holes corresponding to the first insertion holes, the second mold set further comprising a bolt for being inserted into the first insertion holes and the second insertion holes;

[0007] The third module comprises a long cylinder core and a short cylinder core coaxially arranged, and further comprises a pull rod detachably connected to the long cylinder core and a nut threadedly connected to the pull rod. The long cylinder core penetrates through the front cover plate and forms a first flange abutting against the front cover plate on a side of the front cover plate away from the first module. The short cylinder core penetrates through the rear cover plate and forms a second flange abutting against the rear cover plate on a side of the rear cover plate away from the first module. The first module and the second module cooperate with the long cylinder core and the short cylinder core to form a cavity for forming a target wax mold. The left half mold and the right half mold further cooperate to form a wax injection opening communicated with the cavity. The pull rod penetrates through the short cylinder core, and the axial direction of the thread on the pull rod is parallel to the second direction. The nut and the long cylinder core are distributed on opposite sides of the short cylinder core along the axial direction of the short cylinder core, and the short cylinder core abuts against the nut.

[0008] Optionally, an end of the pull rod forms a clamping plate perpendicular to the axial direction of the pull rod. A lug is formed on the clamping plate and is distributed on opposite sides of the clamping plate along the radial direction of the pull rod. The nut and the clamping plate are distributed on opposite sides of the short cylinder core along the axial direction of the short cylinder core.

[0009] The long cylinder core is coaxially arranged with the pull rod. The pull rod is slidingly connected to the short cylinder core and can move along the axial direction of the long cylinder core and rotate around the axial direction of the long cylinder core. A connecting hole is formed on the long cylinder core for the clamping plate to fit through. A notch is formed on the side wall of the connecting hole for the lug to fit through. A recess is communicated with the notch and extends in the circumferential direction. The extension plane of the recess is perpendicular to the axial direction of the long cylinder core. The notch and the recess are distributed along the axial direction of the long cylinder core, and the notch is closer to the clamping plate than the recess.

[0010] Optionally, the notch is connected to the end of the recess.

[0011] Optionally, a guide connecting portion is formed on a side of the long cylinder core close to the short cylinder core. A guide connecting inner cavity is formed on the short cylinder core for accommodating the guide connecting portion.

[0012] The guide connecting portion forms the connecting hole, the notch, and the recess.

[0013] Optionally, the guide connecting portion is slidingly connected to the side wall of the guide connecting inner cavity. A guide segment is formed on the guide connecting portion to facilitate the guide connecting portion to enter the guide connecting inner cavity.

[0014] Optionally, a guide cone is formed on the lug to facilitate the lug to pass through the notch.

[0015] Optionally, handles are respectively connected to opposite sides of the nut along the radial direction of the nut.

[0016] Optionally, a handle is connected to the end of the pull rod away from the connecting hole.

[0017] Optionally, a boss coaxial with the nut is formed on the short cylinder core, and the short cylinder core abuts against the nut through the boss.

[0018] Optionally, the first module further comprises a guide pin extending in the first direction.

[0019] The guide pin is connected to the left half mold, and the right half mold is provided with a hole for inserting the guide pin.

[0020] And / or

[0021] The guide pin is connected to the right half mold, and the left half mold is provided with a hole for inserting the guide pin.

[0022] The self-centering locking mold for wax mold forming of the regulating valve provided in the application has the following advantages compared with the prior art. First, the left half mold and the right half mold mutually spliced in the first direction are clamped between the front cover plate and the rear cover plate arranged in the second direction. Since the first insertion hole extending in the second direction is arranged on the left half mold and the right half mold respectively, and since the second insertion hole corresponding to the first insertion hole is arranged on the front cover plate and the rear cover plate respectively, when the insertion pin is inserted into the first insertion hole and the second insertion hole, the left half mold and the right half mold cannot be separated from each other in the first direction. Second, the first flange and the second flange are arranged on the long cylinder core and the short cylinder core respectively, and the front cover plate and the rear cover plate are clamped between the first flange and the second flange. Since the pull rod detachably connected to the long cylinder core passes through the short cylinder core and is threadedly connected to the nut, and since the axial thread between the pull rod and the nut is parallel to the second direction and the short cylinder core abuts against the nut, when the nut moves along the axial direction of the pull rod and approaches the long cylinder core, the long cylinder core can abut against the short cylinder core, so that the first flange and the second flange can clamp the front cover plate and the rear cover plate in the second direction, and thus the front cover plate and the rear cover plate cannot move away from each other in the second direction. Therefore, the self-centering locking mold for wax mold forming of the regulating valve provided in the application does not need to introduce a redundant support structure, and only through the mutual support between the various module parts can a high positioning accuracy be achieved, which can significantly reduce the complexity and manufacturing cost of the self-centering locking mold for wax mold forming of the regulating valve in the embodiment, and is much better than the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 Figure 1 is a schematic diagram of the overall structure of a self-centering locking mold for wax mold forming of a regulating valve according to an embodiment of the present application;

[0025] Figure 2 Figure 2 is a schematic diagram of an exploded structure of a self-centering locking mold for wax mold forming of a regulating valve according to an embodiment of the present application;

[0026] Figure 3 Figure 3 is a schematic diagram of a partial structure of a self-centering locking mold for wax mold forming of a regulating valve according to an embodiment of the present application; Figure 1

[0027] Figure 4 Figure 4 is a schematic diagram of a partial structure of a self-centering locking mold for wax mold forming of a regulating valve according to an embodiment of the present application; Figure 2

[0028] Figure 5 Figure 5 is a top view of the overall structure of a self-centering locking mold for wax mold forming of a regulating valve according to an embodiment of the present application;

[0029] Figure 6 Figure 6 is a sectional view along line A-A in Figure 5. Figure 5

[0030] In the drawings, reference numerals: 101, left half mold; 102, right half mold; 103, front cover plate; 104, rear cover plate; 105, first insertion hole; 106, second insertion hole; 107, bolt; 108, long barrel core; 109, short barrel core; 110, pull rod; 111, nut; 112, first flange; 113, second flange; 114, cavity; 115, wax injection port; 116, clamping plate; 117, lug; 118, connecting hole; 119, notch; 120, sink; 121, guide connection; 122, guide connection inner cavity; 123, guide section; 124, guide cone; 125, handle; 126, pull handle; 127, boss; 128, guide pin. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] ​​​It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, indicate directions or positions based on the directions or positions shown in the drawings, and are used for convenience of description and simplification of description only, and do not indicate or imply that the device or element 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.

[0034] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0035] Please refer to Figures 1 to 6 , now a self-centering locking mold for wax mold forming of a regulating valve provided by the embodiments of the present application will be described. The self-centering locking mold for wax mold forming of the regulating valve comprises a first mold group, a second mold group and a third mold group. Among them:

[0036] The first mold set comprises a left half mold 101 and a right half mold 102 which are spliced together along a first direction; the second mold set comprises a front cover plate 103 and a rear cover plate 104 which are arranged in parallel along a second direction, the second direction being perpendicular to the first direction, the left half mold 101 and the right half mold 102 being arranged between the front cover plate 103 and the rear cover plate 104, the left half mold 101 and the right half mold 102 being respectively provided with a first insertion hole 105 extending along the second direction, the front cover plate 103 and the rear cover plate 104 being respectively provided with a second insertion hole 106 corresponding to the first insertion hole 105, the second mold set further comprising a bolt 107 inserted into the first insertion hole 105 and the second insertion hole 106; the third mold set comprises a long cylinder core 108 and a short cylinder core 109 which are coaxially arranged, further comprising a pull rod 110 detachably connected to the long cylinder core 108 and a nut 111 threadedly connected to the pull rod 110, the long cylinder core 108 penetrating through the front cover plate 103 and forming a first flange 112 abutting against the front cover plate 103 on a side of the front cover plate 103 facing away from the first mold set, the short cylinder core 109 penetrating through the rear cover plate 104 and forming a second flange 113 abutting against the rear cover plate 104 on a side of the rear cover plate 104 facing away from the first mold set, the first mold set and the second mold set cooperating with the long cylinder core 108 and the short cylinder core 109 to form a mold cavity 114 for forming a target wax mold, the left half mold 101 and the right half mold 102 further cooperating to form a wax injection port 115 communicating with the mold cavity 114; the pull rod 110 penetrates through the short cylinder core 109 and an axial direction of the pull rod 110 is parallel to the second direction, the nut 111 and the long cylinder core 108 being distributed on opposite sides of the short cylinder core 109 along an axial direction of the short cylinder core 109, the short cylinder core 109 abutting against the nut 111. Figure 1 The first direction and the second direction are respectively an x direction and a y direction in the accompanying drawings.

[0037] According to the above structure provided in the embodiment, the left half mold 101 and the right half mold 102 spliced with each other along the first direction are clamped between the front cover plate 103 and the rear cover plate 104 arranged at intervals along the second direction. Since the first insertion hole 105 extending along the second direction is arranged on the left half mold 101 and the right half mold 102 respectively, and the second insertion hole 106 corresponding to the first insertion hole 105 is arranged on the front cover plate 103 and the rear cover plate 104 respectively, when the bolt 107 is inserted into the first insertion hole 105 and the second insertion hole 106, the left half mold 101 and the right half mold 102 cannot be separated from each other along the first direction. In addition, the first flange 112 and the second flange 113 are arranged on the long cylinder core 108 and the short cylinder core 109 respectively, and the front cover plate 103 and the rear cover plate 104 are clamped between the first flange 112 and the second flange 113. Since the pull rod 110 detachably connected to the long cylinder core 108 penetrates the short cylinder core 109 and is threadedly connected to the nut 111, the threaded axis between the pull rod 110 and the nut 111 is parallel to the second direction, and the short cylinder core 109 abuts against the nut 111. Therefore, when the nut 111 moves along the axial direction of the pull rod 110 and approaches the long cylinder core 108, the long cylinder core 108 can abut against the short cylinder core 109, so that the first flange 112 and the second flange 113 can clamp the front cover plate 103 and the rear cover plate 104 in cooperation in the second direction, and the front cover plate 103 and the rear cover plate 104 cannot move away from each other in the second direction. Therefore, the self-centering locking mold for wax mold forming of the regulating valve provided in the embodiment does not need to introduce a redundant supporting structure, and a high positioning accuracy can be achieved only by mutual support between the various part modules. Therefore, the complexity and manufacturing cost of the self-centering locking mold for wax mold forming of the regulating valve in the embodiment can be significantly reduced, which is much better than the prior art.

[0038] In another embodiment of the present application, referring to Figures 1 to 6 , the end of the pull rod 110 forms a clamping plate 116 perpendicular to the axial direction of the pull rod 110, the clamping plate 116 forms a lug 117, and the lug 117 is distributed on opposite sides of the clamping plate 116 in the radial direction of the pull rod 110; the nut 111 and the clamping plate 116 are distributed on opposite sides of the short cylinder core 109 in the axial direction of the short cylinder core 109; the long cylinder core 108 is coaxially arranged with the pull rod 110, the pull rod 110 is slidingly connected to the short cylinder core 109 and can move along the axial direction of the long cylinder core 108 and rotate around the axial direction of the long cylinder core 108, the long cylinder core 108 forms a connecting hole 118 for the clamping plate 116 to fit through, the side wall of the connecting hole 118 forms a slot 119 for the lug 117 to fit through and a recess 120 connected to the slot 119 and extending in the circumferential direction, the extension plane of the recess 120 is perpendicular to the axial direction of the long cylinder core 108, and the slot 119 and the recess 120 are distributed in the axial direction of the long cylinder core 108, and the slot 119 is closer to the clamping plate 116 than the recess 120.

[0039] According to the above structure provided in this embodiment, during the movement of the pull rod 110 along the axial direction of the long cylinder core 108 and approaching the long cylinder core 108, the clamping plate 116 can pass through the connecting hole 118 and make the lug 117 connected to the clamping plate 116 pass through the notch 119. After the lug 117 passes through the notch 119 and enters the recess 120, the pull rod 110 can rotate around the axial direction of the long cylinder core 108 and make the lug 117 unable to exit the notch 119 along the axial direction of the long cylinder core 108, so that after the nut 111 is tightened, the long cylinder core 108 can be tightly pressed against the short cylinder core 109 and make the front cover plate 103 and the rear cover plate 104 be clamped between the first flange 112 and the second flange 113. After the wax mold is formed, the pull rod 110 can be rotated reversely and the lug 117 can be made to correspond to the notch 119 to separate the pull rod 110 from the long cylinder core 108, and the long cylinder core 108 and the short cylinder core 109 can be separated immediately. Thus, the self-centering locking mold for wax mold forming of a regulating valve provided in this embodiment not only can make the long cylinder core 108 and the short cylinder core 109 form a stable connection, but also can further improve the positioning accuracy therebetween, which is beneficial to further reduce the manufacturing cost of the self-centering locking mold for wax mold forming of a regulating valve provided in this embodiment.

[0040] In another embodiment of the present application, please refer to Figures 1 to 6 , the notch 119 is connected to the end of the recess 120. According to the above structure provided in this embodiment, the connection of the notch 119 to the end of the recess 120 can make the end of the recess 120 serve as a positioning structure of the lug 117, thereby facilitating the quick installation of the lug 117 in place or the exit of the lug 117 from the recess 120, which is beneficial to further improve the positioning accuracy of the self-centering locking mold for wax mold forming of a regulating valve provided in this embodiment.

[0041] In another embodiment of the present application, please refer to Figures 1 to 6 , a guide connecting portion 121 is formed on the side of the long cylinder core 108 close to the short cylinder core 109, and a guide connecting inner cavity 122 for accommodating the guide connecting portion 121 is formed on the short cylinder core 109; the guide connecting portion 121 forms the connecting hole 118, the notch 119 and the recess 120. According to the above structure provided in this embodiment, the guide connecting portion 121 accommodated in the guide connecting inner cavity 122 can make the long cylinder core 108 and the short cylinder core 109 form a more stable connection, which is beneficial to further improve the positioning accuracy of the self-centering locking mold for wax mold forming of a regulating valve provided in this embodiment.

[0042] In another embodiment of the present application, please refer to Figures 1 to 6The guide connection part 121 is slidably connected to the side wall of the guide inner cavity 122, and a guide section 123 is formed on the guide connection part 121 to facilitate the entry of the guide connection part 121 into the guide inner cavity 122. According to the above structure provided in the embodiment, the guide section 123 formed on the guide connection part 121 can facilitate the entry of the guide connection part 121 into the guide inner cavity 122, thereby further improving the positioning accuracy of the self-centering locking mold for wax mold forming of the regulating valve.

[0043] In another embodiment of the present application, referring back to Figures 1 to 6 A guide cone 124 is formed on the lug 117 to facilitate the passage of the lug 117 through the slot 119. According to the above structure provided in the embodiment, the guide cone 124 provided on the lug 117 can facilitate the passage of the lug 117 through the sink 120, thereby further improving the positioning accuracy of the self-centering locking mold for wax mold forming of the regulating valve.

[0044] In another embodiment of the present application, referring back to Figures 1 to 6 The nut 111 is connected with a handle 125 on opposite sides in the radial direction of the nut 111. According to the above structure provided in the embodiment, the handle 125 provided on the nut 111 can facilitate the rotation of the nut 111 by the operator, thereby further improving the positioning accuracy of the self-centering locking mold for wax mold forming of the regulating valve.

[0045] In another embodiment of the present application, referring back to Figures 1 to 6 The lug 110 is connected with a handle 126 at the end away from the connecting hole. According to the above structure provided in the embodiment, the handle 126 connected to the lug 110 can facilitate the pushing or rotating of the lug 110 by the operator, thereby facilitating the passage of the lug 117 through the slot 119 and into the sink 120, and further improving the positioning accuracy of the self-centering locking mold for wax mold forming of the regulating valve.

[0046] In another embodiment of the present application, referring back to Figures 1 to 6 A boss 127 is formed on the short cylinder core 109 coaxially with the nut 111, and the short cylinder core 109 abuts against the nut 111 through the boss 127. According to the above structure provided in the embodiment, the boss 127 formed on the short cylinder core 109 can effectively improve the structural strength of the short cylinder core 109, thereby further improving the positioning accuracy of the self-centering locking mold for wax mold forming of the regulating valve.

[0047] In another embodiment of the present application, referring back to ​The first module further comprises a guide pin 128 extending along the first direction; the guide pin 128 is connected to the left half mold 101, and the right half mold 102 is provided with a hole for inserting the guide pin 128; and / or the guide pin 128 is connected to the right half mold 102, and the left half mold 101 is provided with a hole for inserting the guide pin 128. According to the above structure provided in the embodiment, the guide pin 128 connected to the left half mold 101 or the right half mold 102 can provide guidance for the splicing of the left half mold 101 and the right half mold 102 by inserting the hole formed on the right half mold 102 or the left half mold 101, which is conducive to further improving the positioning accuracy of the self-centering locking mold for the wax mold forming of the regulating valve in the embodiment.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A self-centering locking mold for molding wax models of regulating valves, characterized in that, The utility model relates to a self-centering locking mould for wax mould forming of regulating valve, which comprises the following components: a first mould module, comprising a left half mould (101) and a right half mould (102) which are spliced together along a first direction; a second mould module, comprising a front cover plate (103) and a rear cover plate (104) which are arranged at intervals along a second direction perpendicular to the first direction, the left half mould (101) and the right half mould (102) being arranged between the front cover plate (103) and the rear cover plate (104), the left half mould (101) and the right half mould (102) each being provided with a first insertion hole (105) extending along the second direction, the front cover plate (103) and the rear cover plate (104) each being provided with a second insertion hole (106) corresponding to the first insertion hole (105), the second mould module further comprising a bolt (107) for insertion into the first insertion hole (105) and the second insertion hole (106); a third mould module, comprising a long barrel core (108) and a short barrel core (109) which are coaxially arranged, further comprising a pull rod (110) detachably connected to the long barrel core (108) and a nut (111) threadedly connected to the pull rod (110), the long barrel core (108) penetrating through the front cover plate (103) and forming a first flange (112) abutting against the front cover plate (103) on a side of the front cover plate (103) facing away from the first mould module, the short barrel core (109) penetrating through the rear cover plate (104) and forming a second flange (113) abutting against the rear cover plate (104) on a side of the rear cover plate (104) facing away from the first mould module, the first mould module and the second mould module cooperating with the long barrel core (108) and the short barrel core (109) to form a mould cavity (114) for forming a target wax mould, the left half mould (101) and the right half mould (102) further cooperating to form a wax injection port (115) communicating with the mould cavity (114); the pull rod (110) penetrating through the short barrel core (109) and the axial direction of the pull rod (110) being parallel to the second direction, the nut (111) and the long barrel core (108) being distributed on opposite sides of the short barrel core (109) along the axial direction of the short barrel core (109), the short barrel core (109) abutting against the nut (111).

2. The self-centering locking mould for wax mould forming of regulating valve according to claim 1, wherein: an end portion of the pull rod (110) forms a clamping plate (116) perpendicular to the axial direction of the pull rod (110), the clamping plate (116) being provided with lugs (117) distributed on opposite sides of the clamping plate (116) along the radial direction of the pull rod (110), the nut (111) and the clamping plate (116) being distributed on opposite sides of the short barrel core (109) along the axial direction of the short barrel core (109). The long cylinder core (108) is coaxially arranged with the pull rod (110), the pull rod (110) is slidingly connected with the short cylinder core (109) and can move along the axial direction of the long cylinder core (108) and rotate around the axial direction of the long cylinder core (108), the connecting hole (118) is formed on the long cylinder core (108) for the clamping plate (116) to pass through, the notch (119) and the groove (120) extending in the circumferential direction and connected with the notch (119) are formed on the side wall of the connecting hole (118) for the lug (117) to pass through, the extension plane of the groove (120) is perpendicular to the axial direction of the long cylinder core (108), the notch (119) and the groove (120) are distributed along the axial direction of the long cylinder core (108), and the notch (119) is closer to the clamping plate (116) than the groove (120).

3. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 2, characterized in that: The notch (119) is connected at the end of the groove (120).

4. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 2, characterized in that: The long cylinder core (108) is formed with a guide connection portion (121) on the side close to the short cylinder core (109), and the short cylinder core (109) is formed with a guide connection inner cavity (122) for accommodating the guide connection portion (121); The guide connection portion (121) is formed with the connecting hole (118), the notch (119) and the groove (120).

5. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 4, characterized in that: The guide connection portion (121) is slidingly connected with the side wall of the guide connection inner cavity (122), and the guide connection portion (121) is formed with a guide segment (123) for facilitating the guide connection portion (121) to enter the guide connection inner cavity (122).

6. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 2, characterized in that: The lug (117) is formed with a guide cone (124) for facilitating the lug (117) to pass through the notch (119).

7. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 2, characterized in that: The nut (111) is connected with a handle (125) on each of the opposite sides in the radial direction of the nut (111).

8. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 2, characterized in that: The pull rod (110) is connected with a pull handle (126) at the end away from the connecting hole.

9. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 1, characterized in that: The short cylinder core (109) is formed with a boss (127) coaxially arranged with the nut (111), and the short cylinder core (109) abuts against the nut (111) through the boss (127).

10. The self-centering locking mold for wax mold forming of a regulating valve as claimed in claim 1, characterized in that: The first mold set further comprises a guide pin (128) extending in the first direction; The guide pin (128) is connected to the left half mold (101) and the right half mold (102) is provided with a hole for inserting the guide pin (128); and / or The guide pin (128) is connected to the right half mold (102) and the left half mold (101) is provided with a hole for inserting the guide pin (128).

Images