Injection mold of valve body
By designing injection molds for the moving mold assembly and the fixed mold assembly, and utilizing a passive molding mechanism, the bypass valve body can be produced in a "one-out-two" manner, which solves the problems of high mold cost and low efficiency, and achieves cost reduction and efficiency improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-20
AI Technical Summary
Existing bypass valve body molding molds are costly to manufacture and have low production efficiency, making it impossible to mold multiple valve bodies simultaneously.
The injection mold design includes a moving mold assembly and a fixed mold assembly. It utilizes a passive molding mechanism to achieve "one-out-of-two" production, reducing the use of cylinders and sharing the passive molding mechanism.
This reduced mold manufacturing costs, improved production efficiency, and enabled the simultaneous molding of two valve bodies.
Smart Images
Figure CN224012893U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a valve body's injection mold. BACKGROUND
[0002] The bypass valve is installed on the bypass pipeline, and its main function is to protect the equipment or system from overpressure or other abnormal conditions by adjusting the flow path of the fluid. The material of the bypass valve body can be selected according to the pressure of the use occasion. The bypass valve body used in a fluid system with small pressure can be made of plastic. The production of the bypass valve body made of plastic is realized by relying on a matched forming mold and with the help of an injection molding machine.
[0003] Because the bypass valve body is designed with interfaces or connecting pipes on multiple surfaces, the existing bypass valve body forming mold must set a cylinder on each surface to achieve the functions of shaping and demolding, so the manufacturing cost of the mold is high. Moreover, due to the limitation of the space structure, the forming mold can only realize "one out of one", that is, only one valve body can be produced by one-time injection molding, so the production efficiency is low and needs to be further improved. INVENTION CONTENTS
[0004] In view of the above-mentioned status of the prior art, the technical problem to be solved by the utility model is to provide a valve body injection mold which reduces the manufacturing cost of the mold to a certain extent and improves the production efficiency.
[0005] The utility model adopts the technical scheme that: a valve body injection mold, including respectively front and back set and mutually cooperate's dynamic die assembly and fixed die assembly, dynamic die assembly includes dynamic module, fixed in dynamic module front side's shunt block, fixed in shunt block front side's feed block, and the first mold closing block that embeds in dynamic module rear side, fixed die assembly includes fixed die, fixed in fixed die rear side's seat block, embeds in fixed die front side and with first mold closing block each other cooperation's second mold closing block, and set up between seat block and fixed die and mutually cooperate's ejection mechanism, its characterized in that:
[0006] The end face of the second mold closing block is provided with a concave cavity, and a passive forming mechanism is further arranged in the concave cavity. The passive forming mechanism includes an isosceles trapezoidal drive block fixed on the end face of the first mold closing block, and two split blocks movably connected in the concave cavity to have up and down vertical movement functions and symmetrically arranged on the upper and lower sides of the isosceles trapezoidal drive block. One side of each of the two split blocks towards the isosceles trapezoidal drive block is formed with an inclined surface. The inclined surfaces on the two split blocks are movably connected to the upper and lower two side outer walls of the isosceles trapezoidal drive block to have the function of inclined sliding along the corresponding side outer wall of the isosceles trapezoidal drive block.
[0007] The end face of the first mold module is provided with two horizontally arranged semi-circular shaped recesses which are respectively distributed above and below, and correspondingly, the upper side edge of the opening of the recess is provided with a first arc shaped groove, the upper front edge of the upper one of the mold modules is provided with a second arc shaped groove, and the lower front edge of the lower one of the mold modules is provided with a second arc shaped groove, and the two second arc shaped grooves are respectively matched with the two first arc shaped grooves and the two semi-circular shaped recesses.
[0008] The upper side edge of the opening of the recess and the upper side edge of the second mold module, and the lower side edge of the opening of the recess and the lower side edge of the second mold module are respectively provided with two first interface arc shaped grooves which are respectively distributed left and right, and correspondingly, the upper side edge of the opening of the upper one of the semi-circular shaped recesses and the upper side edge of the first mold module, and the lower side edge of the opening of the lower one of the semi-circular shaped recesses and the lower side edge of the first mold module are respectively provided with two second interface arc shaped grooves which are respectively distributed left and right and are respectively matched with the two first interface arc shaped grooves.
[0009] The left and right inner walls of the two ends of each of the semi-circular shaped recesses and the left and right outer walls of the first mold module are respectively provided with a first tapered interface groove, and correspondingly, the left side edge of the opening of the recess and the left side edge of the second mold module, and the right side edge of the opening of the recess and the right side edge of the second mold module are respectively provided with two second tapered interface grooves which are respectively distributed above and below, the upper two second tapered interface grooves are respectively matched with the two first tapered interface grooves of the upper one of the semi-circular shaped recesses, and the lower two second tapered interface grooves are respectively matched with the two first tapered interface grooves of the lower one of the semi-circular shaped recesses.
[0010] Preferably, the mold module and the second mold module are further provided with two first active forming mechanisms which are symmetrically distributed left and right, and two second active forming mechanisms which are symmetrically distributed above and below, the first active forming mechanism comprises a first slider which is movably connected to the front side of the mold module to have a left and right translation function and is located to the left or right of the second mold module, a first forming cylinder which is fixed to the left or right outer wall of the mold module, and two first forming columns which are horizontally fixed to one side of the first slider and face the outer wall of the second mold module, the two first forming columns in the left one of the first active forming mechanisms are movably arranged in the two second tapered interface grooves on the left, and the two first forming columns in the right one of the first active forming mechanisms are movably arranged in the two second tapered interface grooves on the right.
[0011] Preferably, the second active forming mechanism comprises a second slider movably connected to the front side of the fixed die set to have up-and-down vertical movement and located on the upper side or the lower side of the second die set, a second forming cylinder fixed on the outer wall of the upper side or the lower side of the fixed die set, and two second forming columns vertically fixed on the outer wall of one side of the second die set, the two second forming columns in the upper second active forming mechanism are movably arranged in the two upper first interface arc-shaped grooves respectively, and the two second forming columns in the lower second active forming mechanism are movably arranged in the two lower first interface arc-shaped grooves respectively.
[0012] Preferably, two first semicircular interface grooves are arranged on the upper and lower inner walls of the concave cavity respectively and distributed left and right and intersect with one first arc-shaped forming groove on the same side, and correspondingly, two second semicircular interface grooves are arranged on the outer wall of one first arc-shaped forming groove on the same side of each of the two split die sets respectively and distributed left and right, the two second semicircular interface grooves on the upper split die set are matched with the two upper first semicircular interface grooves respectively, and the two second semicircular interface grooves on the lower split die set are matched with the two lower first semicircular interface grooves respectively.
[0013] Preferably, two interface forming columns are further fixed on the upper and lower side edges of the bottom surface of the concave cavity and arranged transversely, the two upper interface forming columns are concentrically arranged in the two upper first semicircular interface grooves respectively, and the two lower interface forming columns are concentrically arranged in the two lower first semicircular interface grooves respectively.
[0014] Preferably, two first outer forming blocks are further embedded on the upper and lower side edges of the end face of the second die set respectively and distributed left and right, and correspondingly, two second outer forming blocks are further embedded on the upper and lower side edges of the end face of the first die set respectively and distributed left and right, a first arc-shaped clamping groove vertically distributed is arranged on the end face of each first outer forming block, and a second arc-shaped clamping groove vertically distributed is arranged on the end face of each second outer forming block.
[0015] Preferably, the first arc-shaped clamping grooves on the two upper first outer forming blocks are concentrically arranged with the two upper first interface arc-shaped grooves and communicate with each other respectively, the first arc-shaped clamping grooves on the two lower first outer forming blocks are concentrically arranged with the two lower first interface arc-shaped grooves and communicate with each other respectively, the second arc-shaped clamping grooves on the two upper second outer forming blocks are concentrically arranged with the two upper second interface arc-shaped grooves and communicate with each other respectively, and the second arc-shaped clamping grooves on the two lower second outer forming blocks are concentrically arranged with the two lower second interface arc-shaped grooves and communicate with each other respectively.
[0016] Preferably, the end of each of the second forming columns is outwardly formed with a forming seat, the end face of the forming seat is formed with a first arc face, the first arc face is outwardly formed with a convex strip and two first protrusions symmetrically arranged on the front and back sides of the convex strip, and two open grooves symmetrically arranged on the front and back sides of the convex strip are further formed in the first arc face, and the two open grooves are located between the two first protrusions.
[0017] Preferably, the end of each of the second forming columns is outwardly formed with a forming seat, the end face of the forming seat is formed with a first arc face, the first arc face is outwardly formed with a convex strip and two first protrusions symmetrically arranged on the front and back sides of the convex strip, and two open grooves symmetrically arranged on the front and back sides of the convex strip are further formed in the first arc face, and the two open grooves are located between the two first protrusions.
[0018] Preferably, the end of each of the second forming columns is outwardly formed with a forming seat, the end face of the forming seat is formed with a first arc face, the first arc face is outwardly formed with a convex strip and two first protrusions symmetrically arranged on the front and back sides of the convex strip, and two open grooves symmetrically arranged on the front and back sides of the convex strip are further formed in the first arc face, and the two open grooves are located between the two first protrusions.
[0019] Compared with the prior art, the utility model has the advantages that: the utility model with the aid of the passive forming mechanism realizes "one out of two", that is, two valve bodies can be produced by one injection molding, and the similar sides of the two valve bodies share the passive forming mechanism, so that the use of two cylinders is saved without affecting the shaping and demolding, thereby reducing the manufacturing cost of the mold and improving the production efficiency to a certain extent. BRIEF DESCRIPTION OF DRAWINGS
[0020] The above and other features, advantages, and aspects of the embodiments of the present application will become more apparent by describing in detail the following specific embodiments with reference to the attached drawings; identical or similar components denoted by identical or similar reference numerals throughout the drawings; it should be understood that the drawings are schematic, and the original and elements are not necessarily drawn according to the scale; in the drawings:
[0021] Figure 1 It is a right front side exploded view of the utility model;
[0022] Figure 2 It is a right front side exploded view of the second mold closing module, the first active forming mechanism and the second active forming mechanism of the utility model;
[0023] Figure 3 It is a right front side view of the passive forming mechanism of the utility model;
[0024] Figure 4 It is a left rear side view of the first mold closing module of the utility model;
[0025] Figure 5The right front side structure drawing of the second forming column of the utility model;
[0026] Figure 6 The right front side structure drawing of the first active forming mechanism of the utility model;
[0027] Figure 7 The right front side structure drawing of the interface forming column of the utility model;
[0028] Figure 8 The right front side structure drawing of the valve body of the utility model. DETAILED DESCRIPTION
[0029] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the usual meaning as understood by a person with ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprise", "include", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are merely used to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.
[0030] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted.
[0031] As shown in Figures 1-8 An injection mold for a valve body, comprising a movable mold assembly and a fixed mold assembly arranged in front of and behind each other respectively, the movable mold assembly comprising a movable mold block 1, a flow divider 5 fixed to the front side of the movable mold block 1, a feeding block 6 fixed to the front side of the flow divider 5, and a first closing block 3 embedded in the rear side of the movable mold block 1, the fixed mold assembly comprising a fixed mold block 2, a seat block 7 fixed to the rear side of the fixed mold block 2, a second closing block 4 embedded in the front side of the fixed mold block 2 and cooperating with the first closing block 3, and an ejection mechanism 8 arranged between the seat block 7 and the fixed mold block 2 and cooperating with each other;
[0032] The end face of the second mold module 4 is provided with a concave cavity 41, and the concave cavity 41 is further provided with a passive forming mechanism 12. The passive forming mechanism 12 comprises an isosceles trapezoidal driving block 121 fixed on the end face of the first mold module 3, and two mold blocks 122 which are both movably connected in the concave cavity 41 to have the function of vertical movement and are symmetrically arranged on the upper and lower sides of the isosceles trapezoidal driving block 121. The side of each of the two mold blocks 122 facing the isosceles trapezoidal driving block 121 is formed with an inclined surface 1223, and the inclined surface 1223 on each of the two mold blocks 122 is movably connected to the outer wall on the upper and lower sides of the isosceles trapezoidal driving block 121 to have the function of inclined sliding along the corresponding side outer wall of the isosceles trapezoidal driving block 121.
[0033] The end face of the first mold module 3 is provided with two semicircular forming grooves 31 which are transversely arranged and are distributed above and below respectively. Correspondingly, the upper and lower side edges of the opening of the concave cavity 41 are both formed with a first arc forming groove 46. The front upper edge of the upper mold block 122 and the front lower edge of the lower mold block 122 are both formed with a second arc forming groove 1221. The two second arc forming grooves 1221 are respectively matched with the two first arc forming grooves 46 and the two semicircular forming grooves 31.
[0034] The upper side edge between the opening of the concave cavity 41 and the upper side edge of the second mold module 4 and the lower side edge between the opening of the concave cavity 41 and the lower side edge of the second mold module 4 are both provided with two first interface arc grooves 44 which are respectively distributed on the left and right sides. Correspondingly, the upper side edge between the opening of the upper semicircular forming groove 31 and the upper side edge of the first mold module 3 and the lower side edge between the opening of the lower semicircular forming groove 31 and the lower side edge of the first mold module 3 are both provided with two second interface arc grooves 33 which are respectively distributed on the left and right sides and are respectively matched with the two first interface arc grooves 44.
[0035] The inner wall of each semicircular forming groove 31 at the left and right ends is further formed with a first tapered interface groove 32 between the left and right side outer walls of the first mold module 3. Correspondingly, the left side edge between the opening of the concave cavity 41 and the left side edge of the second mold module 4 and the right side edge between the opening of the concave cavity 41 and the right side edge of the second mold module 4 are both provided with two second tapered interface grooves 43 which are respectively distributed above and below. The upper two second tapered interface grooves 43 are respectively matched with the two first tapered interface grooves 32 on the upper semicircular forming groove 31. The lower two second tapered interface grooves 43 are respectively matched with the two first tapered interface grooves 32 on the lower semicircular forming groove 31.
[0036] Two first active forming mechanisms 13 and two second active forming mechanisms 14 are symmetrically arranged between the fixed mold module 2 and the second combined mold module 4, the first active forming mechanism 13 comprises a first slider 131 movably connected to the front side of the fixed mold module 2 to have a left-right translation function and located at the left or right side of the second combined mold module 4, a first forming cylinder 132 fixed to the left or right outer wall of the fixed mold module 2, and two first forming columns 133 fixed transversely to the first slider 131 and towards the outer wall of the second combined mold module 4.
[0037] The two first forming columns 133 in the first active forming mechanism 13 on the left side are movably arranged in the two second taper interface grooves 43 on the left side respectively, and the two first forming columns 133 in the first active forming mechanism 13 on the right side are movably arranged in the two second taper interface grooves 43 on the right side respectively.
[0038] The second active forming mechanism 14 comprises a second slider 141 movably connected to the front side of the fixed mold module 2 to have an up-down vertical movement function and located at the upper or lower side of the second combined mold module 4, a second forming cylinder 142 fixed to the upper or lower outer wall of the fixed mold module 2, and two second forming columns 143 vertically fixed to the second slider 141 and towards the outer wall of the second combined mold module 4.
[0039] The two second forming columns 143 in the second active forming mechanism 14 on the upper side are movably arranged in the two first interface arc grooves 44 on the upper side respectively, and the two second forming columns 143 in the second active forming mechanism 14 on the lower side are movably arranged in the two first interface arc grooves 44 on the lower side respectively.
[0040] Two first semicircular interface grooves 45 are arranged on the upper and lower inner walls of the concave cavity 41 respectively and symmetrically, and intersect with the first arc forming groove 46 on the same side, and correspondingly, two second semicircular interface grooves 1222 are arranged on the outer wall of each of the two split mold modules 122 towards the first arc forming groove 46 on the same side, the two second semicircular interface grooves 1222 on the upper split mold module 122 are matched with the two first semicircular interface grooves 45 on the upper side respectively, and the two second semicircular interface grooves 1222 on the lower split mold module 122 are matched with the two first semicircular interface grooves 45 on the lower side respectively.
[0041] Two interface forming columns 11 are fixed to the upper and lower side edges of the bottom surface of the concave cavity 41, the two interface forming columns 11 on the upper side are concentrically arranged in the two first semicircular interface grooves 45 on the upper side respectively, and the two interface forming columns 11 on the lower side are concentrically arranged in the two first semicircular interface grooves 45 on the lower side respectively.
[0042] The upper and lower side edges of the end face of the second mold module 4 are also embedded with two first outer forming blocks 9 distributed left and right respectively, and correspondingly, the upper and lower side edges of the end face of the first mold module 3 are also embedded with two second outer forming blocks 10 distributed left and right respectively. The end face of each first outer forming block 9 is provided with a first arc-shaped clamping groove 91 vertically distributed, and the end face of each second outer forming block 10 is provided with a second arc-shaped clamping groove 101 vertically distributed.
[0043] The first arc-shaped clamping grooves 91 on the upper two first outer forming blocks 9 are concentrically arranged with the upper two first interface arc-shaped grooves 44 and are in communication with each other, and the first arc-shaped clamping grooves 91 on the lower two first outer forming blocks 9 are concentrically arranged with the lower two first interface arc-shaped grooves 44 and are in communication with each other; the second arc-shaped clamping grooves 101 on the upper two second outer forming blocks 10 are concentrically arranged with the upper two second interface arc-shaped grooves 33 and are in communication with each other, and the second arc-shaped clamping grooves 101 on the lower two second outer forming blocks 10 are concentrically arranged with the lower two second interface arc-shaped grooves 33 and are in communication with each other.
[0044] The end of each second forming column 143 is formed with a forming seat 1431 outward, and the end face of the forming seat 1431 is formed with a first arc surface 1432, and the first arc surface 1432 is formed with a convex strip 1434 and two first protrusions 1433 symmetrically arranged on the front and back sides of the convex strip 1434 outward, and two open grooves 1435 symmetrically arranged on the front and back sides of the convex strip 1434 are also provided on the first arc surface 1432, and the two open grooves 1435 are located between the two first protrusions 1433.
[0045] The end center of one of the first forming columns 133 in each first active forming mechanism 13 is formed with a boss 1331 outward, and the end center of the other first forming column 133 is provided with a recess 1332, and the outer wall of each first forming column 133 towards the end of the same side of one of the first forming columns 133 is provided with a first positioning groove 1334 and two positioning cavities 1333 symmetrically arranged on the front and back sides of the first positioning groove 1334, and the first positioning groove 1334 cooperates with the convex strip 1434, and the two positioning cavities 1333 respectively cooperate with the two first protrusions 1433.
[0046] The end of the interface forming column 11 is formed with a second arc surface 111 cooperating with the outer wall of the first forming column 133, and the second arc surface 111 is formed with a second protrusion 112 and two third protrusions 113 symmetrically arranged on the upper and lower sides of the second protrusion 112 outward.
[0047] Working principle:
[0048] The feeding block 6 and the seat block 7 are respectively installed on the action mechanism and the machine body of the injection molding machine, the feeding block 6 is driven to move backward by the action mechanism, and then the movable mold block 1 is driven to move toward the fixed mold block 2 by the flow distribution block 5 until the two are combined with each other, so that the first mold closing block 3 and the second mold closing block 4 are combined with each other (prior art) ; at this time, the opening of each first groove 91 is combined with the opening of a corresponding second groove 104, each semicircular forming groove 31 is combined with a corresponding first arc forming groove 46, each first tapered interface groove 32 is combined with a corresponding second tapered interface groove 43, each second interface arc-shaped groove 33 is combined with a corresponding first interface arc-shaped groove 44, and each first arc-shaped clamping groove 91 on the first outer forming block 9 is combined with a corresponding second arc-shaped clamping groove 101 on the second outer forming block 10.
[0049] During the movement of the first mold closing block 3 toward the second mold closing block 4, the isosceles trapezoidal driving block 121 in the passive forming mechanism 12 is synchronously moved, and then the two flow distribution blocks 122 are forced to slide along the upper and lower outer walls of the isosceles trapezoidal driving block 121, respectively, since the flow distribution blocks 122 are movably connected in the cavity 41, they can only move up and down and cannot leave the cavity 41, so the two flow distribution blocks 122 move upward and downward, respectively, and then the second arc forming groove 1221 on each flow distribution block 122 moves toward a first arc forming groove 46 on the same side until the two are combined with each other.
[0050] Then the extension end of the first forming cylinder 132 in each first active forming mechanism 13 is driven to extend outward to drive the two first forming columns 133 to move toward the second mold closing block 4 by the first sliding block 131; at the same time, the extension end of the second forming cylinder 142 in each second active forming mechanism 14 is driven to extend outward to drive the two second forming columns 143 to also move toward the second mold closing block 4 by the second sliding block 141.
[0051] Afterwards, the molten material enters into the distribution block 5 through the gate provided in the feeding block 6, and then enters into each semicircular forming groove 31 and a corresponding first arc forming groove 46 and a second arc forming groove 1221 through the runner provided in the distribution block 5, and then two valve bodies 15 can be formed simultaneously after cooling; subsequently, the feeding block 6 is driven to move forward by the action mechanism, and then the movable mold block 1 is driven to move forward and away from the fixed mold block 2, and the extension end of each first forming cylinder 132 and each second forming cylinder 142 is driven to shrink inward to drive each first forming column 133 and each second forming column 143 to move reversely and reset, and the isosceles trapezoidal driving block 121 is driven to move forward with the first mold block 3, and then the two distribution blocks 122 are forced to move away from the first arc forming groove 46 on the same side, and finally the two formed valve bodies 15 are driven to move forward by the ejection mechanism 8 (prior art).
[0052] Each first interface arc-shaped groove 44 and a corresponding second interface arc-shaped groove 33 form two connecting pipes 151 on the valve body 15, each first tapered interface groove 32 and a corresponding second tapered interface groove 43 form end interfaces 153 at both ends of the valve body 15, each first arc-shaped clamping groove 91 on the first outer forming block 9 and a corresponding second arc-shaped clamping groove 101 on the second outer forming block 10 form a clamping port 154 outside the end opening of each connecting pipe 151, and the two interface forming columns 11 form two short connecting pipes 153 on the valve body 15.
[0053] The utility model discloses with the help of passive forming mechanism 12 realizes " one out two ", namely, once injection molding can produce two valve bodies, and the similar side of two valve bodies shares passive forming mechanism 12, and then can save the use of two cylinders under the prerequisite of not affecting setting and demolding, and then reduces the manufacturing cost of mould and improves production efficiency to a certain extent.
[0054] Finally, it should be noted that: the above examples are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that it can still modify the technical scheme recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of each embodiment of the utility model.
Claims
1. An injection mold for a valve body, comprising a moving mold assembly and a fixed mold assembly respectively arranged front to rear and cooperating with each other, the moving mold assembly including a moving module, a flow divider block fixed to the front side of the moving module, a feed block fixed to the front side of the flow divider block, and a first assembly module embedded at the rear side of the moving module, the fixed mold assembly including a fixed module, a seat block fixed to the rear side of the fixed module, a second assembly module embedded at the front side of the fixed module and cooperating with the first assembly module, and an ejection mechanism disposed between the seat block and the fixed module and cooperating with each other, characterized in that: The second assembly module has a recessed cavity at the center of its end face. The cavity is also equipped with a passive forming mechanism. The passive forming mechanism includes an isosceles trapezoidal drive block fixed on the end face of the first assembly module, and two sub-modules that are movably connected in the cavity and have the function of vertical movement up and down, and are symmetrically arranged on the upper and lower sides of the isosceles trapezoidal drive block, respectively. The two sub-modules have inclined surfaces formed on the side facing the isosceles trapezoidal drive block. The inclined surfaces on the two sub-modules are movably connected to the upper and lower outer walls of the isosceles trapezoidal drive block, respectively, so that they have the function of inclined sliding along the corresponding outer wall of the isosceles trapezoidal drive block. Two horizontally arranged and vertically distributed semi-circular grooves are formed on the end face of the first composite module. Correspondingly, a first arc-shaped groove is formed on the upper and lower edges of the opening of the cavity. A second arc-shaped groove is formed on the upper front edge of the upper sub-module and the lower front lower edge of the lower sub-module. The two second arc-shaped grooves cooperate with the two first arc-shaped grooves and the two semi-circular grooves respectively. Two first interface arc-shaped grooves, respectively distributed left and right, are provided between the upper edge of the opening of the cavity and the upper edge of the second assembly module, and between the lower edge of the opening of the cavity and the lower edge of the second assembly module. Correspondingly, two second interface arc-shaped grooves, respectively distributed left and right and cooperating with the two first interface arc-shaped grooves, are provided between the upper edge of the opening of the upper semi-circular forming groove and the upper edge of the first assembly module, and between the lower edge of the opening of the lower semi-circular forming groove and the lower edge of the first assembly module. Each of the left and right inner walls of the semicircular forming groove is further formed with a first conical interface groove between the left and right outer walls of the first assembly module. Correspondingly, two second conical interface grooves are respectively provided between the left edge of the opening of the cavity and the left edge of the second assembly module, and between the right edge of the opening of the cavity and the right edge of the second assembly module. The two upper second conical interface grooves cooperate with the two first conical interface grooves on the upper semicircular forming groove, and the two lower second conical interface grooves cooperate with the two first conical interface grooves on the lower semicircular forming groove.
2. The injection mold for a valve body according to claim 1, characterized in that, Between the fixed module and the second assembly module, there are two first active forming mechanisms symmetrically distributed from left to right and two second active forming mechanisms symmetrically distributed from top to bottom. The first active forming mechanism includes a first slider movably connected to the front side of the fixed module to have left and right translation function and located to the left or right of the second assembly module, a first forming cylinder fixed to the outer wall of the left or right side of the fixed module, and two first forming columns horizontally fixed to the first slider on one side of the outer wall facing the second assembly module. The two first forming columns in the first active forming mechanism on the left are respectively movably disposed in the two second conical interface slots on the left, and the two first forming columns in the first active forming mechanism on the right are respectively movably disposed in the two second conical interface slots on the right.
3. The injection mold for a valve body according to claim 2, characterized in that, The second active molding mechanism includes a second slider movably connected to the front of the fixed module to have vertical movement function and located on the upper or lower side of the second assembly module, a second molding cylinder fixed on the upper or lower outer wall of the fixed module, and two second molding columns vertically fixed on the second slider on one side of the outer wall facing the second assembly module. The two second molding columns in the upper second active molding mechanism are respectively movably disposed in the two upper first interface arc grooves, and the two second molding columns in the lower second active molding mechanism are respectively movably disposed in the two lower first interface arc grooves.
4. The injection mold for a valve body according to claim 1, characterized in that, Two first semicircular interface slots are respectively provided on the inner walls of the upper and lower sides of the cavity and intersect with a first arc-shaped groove on the same side. Correspondingly, two second semicircular interface slots are respectively provided on the outer walls of the first arc-shaped groove on the same side of the two sub-modules. The two second semicircular interface slots on the upper sub-module cooperate with the two first semicircular interface slots on the upper side, and the two second semicircular interface slots on the lower sub-module cooperate with the two first semicircular interface slots on the lower side.
5. The injection mold for a valve body according to claim 4, characterized in that, Two horizontally arranged interface forming posts are fixed on the upper and lower edges of the bottom surface of the concave cavity. The two upper interface forming posts are respectively concentrically arranged in the two upper first semicircular interface grooves, and the two lower interface forming posts are respectively concentrically arranged in the two lower first semicircular interface grooves.
6. The injection mold for a valve body according to claim 1, characterized in that, The end face of the second assembly module is also provided with two first outer forming blocks that are respectively distributed left and right on both the upper and lower edges. Correspondingly, the end face of the first assembly module is also provided with two second outer forming blocks that are respectively distributed left and right on both the upper and lower edges. Each first outer forming block has a vertically distributed first arc-shaped snap-fit groove on its end face, and each second outer forming block has a vertically distributed second arc-shaped snap-fit groove on its end face.
7. The injection mold for a valve body according to claim 6, characterized in that, The first arc-shaped snap-fit grooves on the two upper first outer molding blocks are concentrically arranged and interconnected with the two upper first interface arc-shaped grooves, respectively; the first arc-shaped snap-fit grooves on the two lower first outer molding blocks are concentrically arranged and interconnected with the two lower first interface arc-shaped grooves, respectively; the second arc-shaped snap-fit grooves on the two upper second outer molding blocks are concentrically arranged and interconnected with the two upper second interface arc-shaped grooves, respectively; the second arc-shaped snap-fit grooves on the two lower second outer molding blocks are concentrically arranged and interconnected with the two lower second interface arc-shaped grooves, respectively.
8. The injection mold for a valve body according to claim 3, characterized in that, Each of the second forming columns has a forming seat formed outward at its end. A first arc surface is formed on the end face of the forming seat. A protrusion and two first protrusions symmetrically arranged on the front and rear sides of the protrusion are formed outward on the first arc surface. Two opening slots symmetrically distributed on the front and rear sides of the protrusion are also provided on the first arc surface. The two opening slots are located between the two first protrusions.
9. The injection mold for a valve body according to claim 8, characterized in that, In each of the first active forming mechanisms, a boss is formed outward from the center of the end of one of the first forming columns, and a recess is formed at the center of the end of the other first forming column. Each first forming column has a first positioning groove and two positioning cavities symmetrically arranged on the front and rear sides of the first positioning groove on the outer wall of the end of the first forming column facing the same side. The first positioning groove cooperates with the protrusion, and the two positioning cavities cooperate with the two first protrusions respectively.
10. The injection mold for a valve body according to claim 5, characterized in that, The end of the interface molding post has a second arc surface that cooperates with the outer wall of the first molding post. A second protrusion and two third protrusions symmetrically arranged on the upper and lower sides of the second protrusion are formed outward on the second arc surface.