Multi-port valve body automatic ejection mold

Abstract

The application discloses a kind of multi-way valve body automatic material-removing mould, including upper die plate, upper die, lower die, ejector plate and lower die base from top to bottom correspondingly, two groups of identical structure equal size are arranged between the upper die and lower die, including first cavity and second cavity, the ejector plate is provided with the ejector pin passing through lower die and corresponding with first cavity and second cavity, the edge of the lower die is provided with a plurality of hydraulic core-pulling mechanisms corresponding to the first cavity and the second cavity, and the lower die is also provided with a wedge core-pulling mechanism corresponding between the first cavity and the second cavity.The application ensures that the overall wax part is short in setting shrinkage time and stable in shrinkage rate through cooling structure, achieves the benefits of high wax output and stable wax size; the mould has two cavities in one mould, and the wax output in the same wax injection unit time is doubled; PLC program control is used to sequentially execute full-automatic wax injection operation, to avoid human operation causing the inner cavity of the mould to be knocked, pressed and injured.

Description

Technical Field

[0001] This invention belongs to the field of precision casting wax injection molding technology, and particularly relates to an automatic unloading mold for a multi-way valve body. Background Technology

[0002] Wax injection molding and stripping is the first process in precision casting. Currently, the industry widely uses a spiral-positioned manual core-pulling system to form the inner hole, directly blowing air to release the wax part from the mold. However, the core-pulling rod lacks a cooling circuit system, causing deformation of the wax part. The overall process of wax injection molding and mold release is time-consuming. After manually pulling out the core, it is then spirally reset. Due to the lack of precision and sequential resetting of multiple cores manually, irreversible damage to the core and the upper and lower molds can easily occur, affecting the mold's lifespan. Therefore, in order to overcome the above shortcomings, the present invention proposes an automatic unloading mold for multi-port valve bodies, which can simultaneously prepare wax parts with two multi-port holes. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide an automatic unloading mold for multi-way valve bodies. Through a cooling structure, it ensures short shrinkage time and stable shrinkage rate for the overall wax part shaping, achieving the benefits of high wax part output and stable wax part size. The mold has two cavities, doubling the output of wax parts in the same wax injection unit time. The fully automatic wax injection operation is executed sequentially by PLC program control, and the mold life can reach 1 million cycles, avoiding bumps and damage to the inner cavity of the mold caused by human operation.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing an automatic stripping mold for a multi-way valve body, including an upper template, an upper mold, a lower mold, an ejector plate, and a lower mold base arranged from top to bottom. Two sets of mold cavities with the same structure and equal size are provided between the upper mold and the lower mold, including a first mold cavity and a second mold cavity. The ejector plate is provided with ejector pins that pass through the lower mold and correspond to the first mold cavity and the second mold cavity. Multiple sets of hydraulic core-pulling mechanisms corresponding to the first mold cavity and the second mold cavity are provided along the edge of the lower mold. A wedge-shaped core-pulling mechanism is also provided between the first mold cavity and the second mold cavity of the lower mold.

[0005] In a preferred embodiment of the present invention, the first mold cavity and the second mold cavity are arranged to rotate 180° around the driving axis of the wedge-shaped core-pulling mechanism, and the first wax part and the second wax part, which are processed by the first mold cavity and the second mold cavity, have the same structure and are equal in size, and are also arranged to rotate 180° around the driving axis of the wedge-shaped core-pulling mechanism.

[0006] In a preferred embodiment of the present invention, the first wax element or the second wax element is provided with 6-12 inner holes, specifically 10 inner holes.

[0007] In a preferred embodiment of the present invention, the upper part of the first wax piece is provided with a first inner hole and a second inner hole, and the two sides are respectively provided with three inner holes: a third inner hole, a fourth inner hole, a fifth inner hole, a sixth inner hole, a seventh inner hole and an eighth inner hole, and the front and rear ends are respectively provided with a ninth inner hole and a tenth inner hole.

[0008] In a preferred embodiment of the present invention, the upper mold is provided with two fixed first core pullers in the first mold cavity, and the lower mold is provided with two fixed second core pullers in the second mold cavity. The two first core pullers correspond one-to-one with the first inner hole and the second inner hole of the first wax piece, and the two second core pullers correspond one-to-one with the first inner hole and the second inner hole of the second wax piece.

[0009] In a preferred embodiment of the present invention, the multiple sets of hydraulic core-pulling mechanisms include a first hydraulic core-pulling mechanism and a second hydraulic core-pulling mechanism on both sides, a third hydraulic core-pulling mechanism and a fourth hydraulic core-pulling mechanism on the front side, and a fifth hydraulic core-pulling mechanism and a sixth hydraulic core-pulling mechanism on the rear side.

[0010] In a preferred embodiment of the present invention, the first hydraulic core-pulling mechanism includes a first pull-out cylinder, a first core-pulling base, a first linear slide rail, and a third core-pulling mechanism. The first pull-out cylinder is horizontally fixed on the left side of the lower mold and the driving end faces the first mold cavity. The bottom of the first core-pulling base is fixed on the lower mold through the first linear slide rail. One side of the first core-pulling base is connected to the driving end of the first pull-out cylinder, and the other end is provided with three third core-pulling mechanisms corresponding to the first mold cavity. The three third core-pulling mechanisms correspond one-to-one with the third inner hole, the fourth inner hole, and the fifth inner hole of the first wax piece. The second hydraulic core-pulling mechanism includes a second pull-out cylinder, a second core-pulling base, a second linear slide rail, and a fourth core-pulling mechanism. The second pull-out cylinder is horizontally fixed on the right side of the lower mold with its drive end facing the second mold cavity. The bottom of the second core-pulling base is fixed to the lower mold via the second linear slide rail. One side of the second core-pulling base is connected to the drive end of the second pull-out cylinder, and the other end is provided with three fourth core-pulling mechanisms corresponding to the second mold cavity. The three fourth core-pulling mechanisms correspond one-to-one with the third inner hole, the fourth inner hole, and the fifth inner hole of the second wax piece. The third hydraulic core-pulling mechanism includes a third pull-out cylinder, a third core-pulling base, a third linear slide rail, and a fifth core-pulling mechanism. The third pull-out cylinder is horizontally fixed to the front side of the lower mold and its driving end faces the first mold cavity. The bottom of the third core-pulling base is fixed to the lower mold via the third linear slide rail. One side of the third core-pulling base is connected to the driving end of the third pull-out cylinder, and the other end is provided with a fifth core-pulling mechanism corresponding to the first mold cavity. The fifth core-pulling mechanism corresponds to the ninth inner hole of the first wax piece. The fourth hydraulic core-pulling mechanism includes a fourth pull-out cylinder, a fourth core-pulling base, a fourth linear slide rail, and a sixth core-pulling mechanism. The fourth pull-out cylinder is horizontally fixed to the front side of the lower mold with its driving end facing the second mold cavity. The bottom of the fourth core-pulling base is fixed to the lower mold via the fourth linear slide rail. One side of the fourth core-pulling base is connected to the driving end of the fourth pull-out cylinder, and the other end is provided with a sixth core corresponding to the second mold cavity. The sixth core corresponds to the ninth inner hole of the second wax piece. The fifth hydraulic core-pulling mechanism includes a fifth pull-out cylinder, a fifth core-pulling base, a fifth linear slide rail, and a seventh core-pulling mechanism. The fifth pull-out cylinder is horizontally fixed to the rear side of the lower mold and its driving end faces the first mold cavity. The bottom of the fifth core-pulling base is fixed to the lower mold via the fifth linear slide rail. One side of the fifth core-pulling base is connected to the driving end of the fifth pull-out cylinder, and the other end is provided with a seventh core-pulling mechanism that corresponds to the tenth inner hole of the first wax piece. The sixth hydraulic core-pulling mechanism includes a sixth pull-out cylinder, a sixth core-pulling base, a sixth linear slide rail, and an eighth core puller. The sixth pull-out cylinder is horizontally fixed to the rear side of the lower mold with its drive end facing the second mold cavity. The bottom of the sixth core-pulling base is fixed to the lower mold via the sixth linear slide rail. One side of the sixth core-pulling base is connected to the drive end of the sixth pull-out cylinder, and the other end is provided with an eighth core puller that corresponds to the tenth inner hole of the second wax piece.

[0011] In a preferred embodiment of the present invention, a first external circulation cooling circuit and a second external circulation cooling circuit are respectively provided in the upper mold and the lower mold, and a first closed-loop cooling channel and a second closed-loop cooling channel are respectively provided in the fifth core puller and the sixth core puller.

[0012] In a preferred embodiment of the present invention, the wedge-shaped core-pulling mechanism includes a seventh pull-out cylinder, a seventh linear slide rail, an active wedge slider, a first driven block, a first positioning component, a ninth core-pulling mechanism, a second driven block, a second positioning component, and a tenth core-pulling mechanism. The seventh pull-out cylinder is horizontally fixed in the middle of the rear side of the lower mold with its drive ends distributed inward. The active wedge slider is fixed to the lower mold via the seventh linear slide rail, and the tail end of the active wedge slider is connected to the drive end of the seventh pull-out cylinder. The head of the active wedge slider has a conical structure, and its two inclined surfaces are connected to the first and second driven blocks via concave-convex snap-fit ​​slide rails. The first driven block is limited on both sides and top by a first positioning component. The first driven block has three ninth core pulls on the first mold cavity side, and the three ninth core pulls correspond one-to-one with the sixth, seventh, and eighth inner holes of the first wax piece. The second driven block is limited on both sides and top by a second positioning component. The second driven block has three tenth core pulls on the second mold cavity side, and the three tenth core pulls correspond one-to-one with the sixth, seventh, and eighth inner holes of the second wax piece. The forward and backward movement of the active wedge slider along the Y-axis is converted into the lateral core pull forward and backward movement of the first driven block and the second driven block along the X-axis.

[0013] The beneficial effects of this invention are as follows: The multi-way valve body automatic unloading mold pointed out in this invention ensures a short shrinkage time and stable shrinkage rate for the overall wax part shaping through a cooling structure, thereby achieving the benefits of high wax part output and stable wax part size; the mold has two cavities, doubling the output of wax parts in the same wax injection unit time; the PLC program control sequentially executes fully automatic wax injection operations, and the mold life can reach 1 million cycles, avoiding bumps and damage to the inner cavity of the mold caused by human operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a perspective view of the upper and lower molds unfolded according to a preferred embodiment of an automatic unloading mold for a multi-way valve body of the present invention; Figure 2 This is a perspective view of the lower mold of a preferred embodiment of an automatic unloading mold for a multi-way valve body according to the present invention; Figure 3 This is a perspective view of a preferred embodiment of the concave-convex snap-fit ​​slide rail of an automatic unloading mold for a multi-way valve body according to the present invention; Figure 4This is another perspective view of the lower mold of a preferred embodiment of an automatic unloading mold for a multi-way valve body according to the present invention; Figure 5 This is a left view of a preferred embodiment of an automatic unloading mold for a multi-way valve body according to the present invention; Figure 6 This is a perspective view of the first wax piece of a preferred embodiment of an automatic unloading mold for a multi-way valve body according to the present invention; Figure 7 This is another perspective view of the first wax part of a preferred embodiment of an automatic unloading mold for a multi-way valve body according to the present invention. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-7 As shown, embodiments of the present invention include: An automatic unloading mold for a multi-way valve body includes an upper template 1, an upper mold 2, a lower mold 3, an ejector plate 4, and a lower mold base 5, arranged from top to bottom.

[0017] The upper mold 2 and the lower mold 3 are provided with two sets of mold cavities of the same structure and size, including a first mold cavity 6 and a second mold cavity 7.

[0018] The first mold cavity 6 and the second mold cavity 7 are arranged to rotate 180° with respect to the driving axis of the wedge-shaped core-pulling mechanism. The first wax part 8 and the second wax part 9, which are processed by the first mold cavity 6 and the second mold cavity 7, have the same structure and are equal in size. They are also arranged to rotate 180° with respect to the driving axis of the wedge-shaped core-pulling mechanism, and two wax parts are formed at one time.

[0019] The first wax part 8 or the second wax part 9 is provided with 6-12 inner holes. The relevant molding components are designed in a targeted manner according to the inner hole requirements of different wax parts. In this application, there are specifically 10 inner holes.

[0020] The first wax piece 8 has a first inner hole 10 and a second inner hole 11 on its upper part, and three inner holes 12, 13, 14, 15, 16 and 17 distributed on its two sides, respectively. The front and rear ends are provided with a ninth inner hole 18 and a tenth inner hole 19, respectively. The second wax piece 9 has the same configuration after being rotated 180°.

[0021] The ejector plate 4 is provided with ejector pins 20 that pass through the lower mold 3 and correspond to the first mold cavity 6 and the second mold cavity 7, for demolding the first wax part 8 and the second wax part 9 after they are formed in the first mold cavity 6 and the second mold cavity 7.

[0022] The upper mold 2 is provided with two fixed first core pullers 21 in the first mold cavity 6, and the lower mold 3 is provided with two fixed second core pullers 22 in the second mold cavity 7. The two first core pullers 21 correspond one-to-one with the first inner hole 10 and the second inner hole 11 of the first wax part 8, and the two second core pullers 22 correspond one-to-one with the first inner hole 10 and the second inner hole 11 of the second wax part 9, for the forming of the first inner hole 10 and the second inner hole 11 of the first wax part 8 and the second wax part 9.

[0023] The lower mold 3 is provided with multiple sets of hydraulic core-pulling mechanisms corresponding to the first mold cavity 6 and the second mold cavity 7 along its edge, which are set according to the required number of inner holes of the wax part.

[0024] The multiple hydraulic core-pulling mechanisms include a first hydraulic core-pulling mechanism and a second hydraulic core-pulling mechanism on both sides, a third hydraulic core-pulling mechanism and a fourth hydraulic core-pulling mechanism on the front side, and a fifth hydraulic core-pulling mechanism and a sixth hydraulic core-pulling mechanism on the rear side.

[0025] The first hydraulic core-pulling mechanism includes a first pull-out cylinder 23, a first core-pulling base 24, a first linear slide rail 25, and a third core-pulling mechanism 26.

[0026] The first pull-out cylinder 23 is horizontally fixed on the left side of the lower mold 3 with its driving end facing the first mold cavity 6. The bottom of the first core-pulling base 24 is fixed on the lower mold 3 through the first linear slide rail 25. One side of the first core-pulling base 24 is connected to the driving end of the first pull-out cylinder 23, and the other end is provided with three third cores 26 corresponding to the first mold cavity 6. The three third cores 26 correspond one-to-one with the third inner hole 12, the fourth inner hole 13 and the fifth inner hole 14 of the first wax part 8. The first pull-out cylinder 23 drives the first core-pulling base 24 to drive the third cores 26 to move linearly on the first linear slide rail 25. When the first wax part 8 is formed, the three third cores 26 are used to form the third inner hole 12, the fourth inner hole 13 and the fifth inner hole 14.

[0027] The second hydraulic core-pulling mechanism includes a second pull-out cylinder 27, a second core-pulling base 28, a second linear slide rail 29, and a fourth core-pulling mechanism 30.

[0028] The second pull-out cylinder 27 is horizontally fixed on the right side of the lower mold 3 with its drive end facing the second mold cavity 7. The bottom of the second core-pulling base 28 is fixed on the lower mold 3 through the second linear slide rail 29. One side of the second core-pulling base 28 is connected to the drive end of the second pull-out cylinder 27, and the other end is provided with three fourth core-pulling elements 30 corresponding to the second mold cavity 7. The three fourth core-pulling elements 30 correspond one-to-one with the third inner hole 12, the fourth inner hole 13 and the fifth inner hole 14 of the second wax part 9. The second pull-out cylinder 27 drives the second core-pulling base 28 to move the fourth core-pulling elements 30 linearly on the second linear slide rail 29. When the second wax part 9 is formed, the three fourth core-pulling elements 30 are used to form the third inner hole 12, the fourth inner hole 13 and the fifth inner hole 14.

[0029] The third hydraulic core-pulling mechanism includes a third pull-out cylinder 31, a third core-pulling base 32, a third linear slide rail 33, and a fifth core-pulling mechanism 34.

[0030] The third pull-out cylinder 31 is horizontally fixed to the front side of the lower mold 3 with its driving end facing the first mold cavity 6. The bottom of the third core-pulling base 32 is fixed to the lower mold 3 via the third linear slide rail 33. One side of the third core-pulling base 32 is connected to the driving end of the third pull-out cylinder 31, and the other end is provided with a fifth core-pulling 34 corresponding to the first mold cavity 6. The fifth core-pulling 34 corresponds to the ninth inner hole 18 of the first wax part 8. The third pull-out cylinder 31 drives the third core-pulling base 32 to drive the fifth core-pulling 34 to move linearly on the third linear slide rail 33. When the first wax part 8 is formed, the fifth core-pulling 34 is used for forming the ninth inner hole 18.

[0031] The fourth hydraulic core-pulling mechanism includes a fourth pull-out cylinder 35, a fourth core-pulling base 36, a fourth linear slide rail 37, and a sixth core-pulling mechanism 38.

[0032] The fourth pull-out cylinder 35 is horizontally fixed to the front side of the lower mold 3 with its driving end facing the second mold cavity 7. The bottom of the fourth core-pulling base 36 is fixed to the lower mold 3 via the fourth linear slide rail 37. One side of the fourth core-pulling base 36 is connected to the driving end of the fourth pull-out cylinder 35, and the other end is provided with a sixth core-pulling cylinder 38 corresponding to the second mold cavity 7. The sixth core-pulling cylinder 38 corresponds to the ninth inner hole 18 of the second wax part 9. The fourth core-pulling base 36 is driven by the fourth pull-out cylinder 35 to move the sixth core-pulling cylinder 38 linearly on the fourth linear slide rail 37. When the second wax part 9 is formed, the sixth core-pulling cylinder 38 is used for forming the ninth inner hole 18.

[0033] The fifth hydraulic core-pulling mechanism includes a fifth pull-out cylinder 39, a fifth core-pulling base 40, a fifth linear slide rail 41, and a seventh core-pulling mechanism 42.

[0034] The fifth pull-out cylinder 39 is horizontally fixed to the rear side of the lower mold 3 with its driving end facing the first mold cavity 6. The bottom of the fifth core-pulling base 40 is fixed to the lower mold 3 through the fifth linear slide rail 41. One side of the fifth core-pulling base 40 is connected to the driving end of the fifth pull-out cylinder 39, and the other end is provided with a seventh core-pulling cylinder 42 corresponding to the tenth inner hole 19 of the first wax part 8. The fifth core-pulling base 40 is driven by the fifth pull-out cylinder 39 to drive the seventh core-pulling cylinder 42 to move linearly on the fifth linear slide rail 41. When the second wax part 9 is formed, the seventh core-pulling cylinder 42 is used to form the tenth inner hole 19.

[0035] The sixth hydraulic core-pulling mechanism includes a sixth pull-out cylinder 43, a sixth core-pulling base 44, a sixth linear slide rail 45, and an eighth core-pulling mechanism 46.

[0036] The sixth pull-out cylinder 43 is horizontally fixed to the rear side of the lower mold 3 with its driving end facing the second mold cavity 7. The bottom of the sixth core-pulling base 44 is fixed to the lower mold 3 through the sixth linear slide rail 45. One side of the sixth core-pulling base 44 is connected to the driving end of the sixth pull-out cylinder 43, and the other end is provided with an eighth core-pulling cylinder 46 corresponding to the tenth inner hole 19 of the second wax part 9. The sixth core-pulling base 44 is driven by the sixth pull-out cylinder 43 to drive the eighth core-pulling cylinder 46 to move linearly on the sixth linear slide rail 45. When the second wax part 9 is formed, the eighth core-pulling cylinder 46 is used to form the tenth inner hole 19.

[0037] The upper mold 2 and the lower mold 3 are respectively provided with a first external circulation cooling circuit 47 and a second external circulation cooling circuit 48. The fifth core pull 34 and the sixth core pull 38 are respectively provided with a first closed-loop cooling channel 49 and a second closed-loop cooling channel 50, which together form a cooling structure to cool down the first wax part 8 and the second wax part 9 during molding, while ensuring the dimensional stability of the wax parts.

[0038] The lower mold 3 is also provided with a wedge-shaped core-pulling mechanism between the first mold cavity 6 and the second mold cavity 7.

[0039] The wedge-shaped core-pulling mechanism includes a seventh pull-out cylinder 51, a seventh linear slide rail 52, an active wedge slider 53, a first driven block 54, a first positioning component 55, a ninth core-pulling mechanism 56, a second driven block 57, a second positioning component 58, and a tenth core-pulling mechanism 59. The seventh pull-out cylinder 51 is horizontally fixed to the middle of the rear side of the lower mold 3 with its driving end distributed inward. The active wedge slider 53 is fixed to the lower mold 3 by the seventh linear slide rail 52, and the tail end of the active wedge slider 53 is connected to the driving end of the seventh pull-out cylinder 51. The active wedge slider 53 has a tapered head and its two inclined surfaces are connected to the first driven block 54 and the second driven block 57 via a concave-convex snap-fit ​​slide rail 60. The sides and top of the first driven block 54 are limited by the first positioning component 55. The first driven block 54 has three ninth core pullers 56 on the side of the first mold cavity 6. The three ninth core pullers 56 correspond one-to-one with the sixth inner hole 15, the seventh inner hole 16, and the eighth inner hole 17 of the first wax part 8. The second driven block 57... The sides and top of the mold cavity 7 are limited by the second positioning component 58. The second driven drive block 57 is provided with three tenth core pullers 59 on the side of the second mold cavity 7. The three tenth core pullers 59 correspond one-to-one with the sixth inner hole 15, the seventh inner hole 16, and the eighth inner hole 17 of the second wax part 9. The forward and backward movement of the active wedge slider 53 in the Y-axis is converted into the lateral core puller movement in the X-axis of the first driven drive block 54 and the second driven drive block 57. The active wedge slider 53 is driven by the seventh pull-out cylinder 51 to move along the seventh linear slide rail 52. The upper and lower parts move back and forth, which is the Y-axis. The first driven drive block 54 and the second driven drive block 57, with the cooperation of the concave and convex buckle slide rail 60, the first positioning component 55 and the second positioning component 58, drive the ninth core puller 56 and the tenth core puller 59 to move laterally, which is the X-axis. This realizes the transformation of the Y-axis drive to the X-axis drive. When the first wax part 8 and the second wax part 9 are formed, the ninth core puller 56 and the tenth core puller 59 are used for the synchronous forming of the sixth inner hole 15, the seventh inner hole 16 and the eighth inner hole 17 of the first wax part 8 and the second wax part 9.

[0040] The entire drive process is controlled by a unified PLC, eliminating the need for manual operation, ensuring control accuracy, reducing labor intensity, and avoiding the impact of human factors on processing operations.

[0041] In summary, the multi-way valve body automatic ejection mold of this invention ensures short shrinkage time and stable shrinkage rate of the overall wax part through a cooling structure, achieving the benefits of high wax part output and stable wax part size; the mold has two cavities, doubling the output of wax parts in the same wax injection unit time; the PLC program control sequentially executes the fully automatic wax injection operation, and the mold life can reach 1 million cycles, avoiding bumps and damage to the inner cavity of the mold caused by human operation.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic unloading mold for a multi-way valve body, comprising an upper template, an upper mold, a lower mold, an ejector plate, and a lower mold base arranged from top to bottom, characterized in that, Two sets of mold cavities of the same structure and size are provided between the upper mold and the lower mold, including a first mold cavity and a second mold cavity. The ejector plate is provided with ejector pins that pass through the lower mold and correspond to the first mold cavity and the second mold cavity. The edge of the lower mold is provided with multiple sets of hydraulic core pulling mechanisms corresponding to the first mold cavity and the second mold cavity. The lower mold is also provided with a wedge-shaped core pulling mechanism between the first mold cavity and the second mold cavity.

2. The automatic unloading mold for multi-way valve bodies according to claim 1, characterized in that, The first mold cavity and the second mold cavity are arranged to rotate 180° with respect to the driving axis of the wedge-shaped core-pulling mechanism. The first wax part and the second wax part, which are processed and formed by the first mold cavity and the second mold cavity, have the same structure and are equal in size. They are also arranged to rotate 180° with respect to the driving axis of the wedge-shaped core-pulling mechanism.

3. The automatic unloading mold for multi-way valve bodies according to claim 2, characterized in that, The first or second wax piece is provided with 6-12 internal holes, specifically 10 internal holes.

4. The automatic unloading mold for multi-way valve bodies according to claim 3, characterized in that, The first wax piece has a first inner hole and a second inner hole on its upper part, and three inner holes distributed on each side: a third inner hole, a fourth inner hole, a fifth inner hole, a sixth inner hole, a seventh inner hole, and an eighth inner hole. The front and rear ends are respectively provided with a ninth inner hole and a tenth inner hole.

5. The automatic unloading mold for multi-way valve bodies according to claim 1, characterized in that, The upper mold has two fixed first core pullers in the first mold cavity, and the lower mold has two fixed second core pullers in the second mold cavity. The two first core pullers correspond one-to-one with the first inner hole and the second inner hole of the first wax piece, and the two second core pullers correspond one-to-one with the first inner hole and the second inner hole of the second wax piece.

6. The automatic unloading mold for multi-way valve bodies according to claim 1, characterized in that, The multiple hydraulic core-pulling mechanisms include a first hydraulic core-pulling mechanism and a second hydraulic core-pulling mechanism on both sides, a third hydraulic core-pulling mechanism and a fourth hydraulic core-pulling mechanism on the front side, and a fifth hydraulic core-pulling mechanism and a sixth hydraulic core-pulling mechanism on the rear side.

7. The automatic unloading mold for multi-way valve bodies according to claim 1, characterized in that, The first hydraulic core-pulling mechanism includes a first pull-out cylinder, a first core-pulling base, a first linear slide rail, and a third core-pulling mechanism. The first pull-out cylinder is horizontally fixed on the left side of the lower mold with its driving end facing the first mold cavity. The bottom of the first core-pulling base is fixed to the lower mold via the first linear slide rail. One side of the first core-pulling base is connected to the driving end of the first pull-out cylinder, and the other end is provided with three third core-pulling mechanisms corresponding to the first mold cavity. The three third core-pulling mechanisms correspond one-to-one with the third inner hole, fourth inner hole, and fifth inner hole of the first wax piece. The second hydraulic core-pulling mechanism includes a second pull-out cylinder, a second core-pulling base, a second linear slide rail, and a fourth core-pulling mechanism. The second pull-out cylinder is horizontally fixed on the right side of the lower mold with its drive end facing the second mold cavity. The bottom of the second core-pulling base is fixed to the lower mold via the second linear slide rail. One side of the second core-pulling base is connected to the drive end of the second pull-out cylinder, and the other end is provided with three fourth core-pulling mechanisms corresponding to the second mold cavity. The three fourth core-pulling mechanisms correspond one-to-one with the third inner hole, the fourth inner hole, and the fifth inner hole of the second wax piece. The third hydraulic core-pulling mechanism includes a third pull-out cylinder, a third core-pulling base, a third linear slide rail, and a fifth core-pulling mechanism. The third pull-out cylinder is horizontally fixed to the front side of the lower mold and its driving end faces the first mold cavity. The bottom of the third core-pulling base is fixed to the lower mold via the third linear slide rail. One side of the third core-pulling base is connected to the driving end of the third pull-out cylinder, and the other end is provided with a fifth core-pulling mechanism corresponding to the first mold cavity. The fifth core-pulling mechanism corresponds to the ninth inner hole of the first wax piece. The fourth hydraulic core-pulling mechanism includes a fourth pull-out cylinder, a fourth core-pulling base, a fourth linear slide rail, and a sixth core-pulling mechanism. The fourth pull-out cylinder is horizontally fixed to the front side of the lower mold with its driving end facing the second mold cavity. The bottom of the fourth core-pulling base is fixed to the lower mold via the fourth linear slide rail. One side of the fourth core-pulling base is connected to the driving end of the fourth pull-out cylinder, and the other end is provided with a sixth core corresponding to the second mold cavity. The sixth core corresponds to the ninth inner hole of the second wax piece. The fifth hydraulic core-pulling mechanism includes a fifth pull-out cylinder, a fifth core-pulling base, a fifth linear slide rail, and a seventh core-pulling mechanism. The fifth pull-out cylinder is horizontally fixed to the rear side of the lower mold and its driving end faces the first mold cavity. The bottom of the fifth core-pulling base is fixed to the lower mold via the fifth linear slide rail. One side of the fifth core-pulling base is connected to the driving end of the fifth pull-out cylinder, and the other end is provided with a seventh core-pulling mechanism that corresponds to the tenth inner hole of the first wax piece. The sixth hydraulic core-pulling mechanism includes a sixth pull-out cylinder, a sixth core-pulling base, a sixth linear slide rail, and an eighth core puller. The sixth pull-out cylinder is horizontally fixed to the rear side of the lower mold with its drive end facing the second mold cavity. The bottom of the sixth core-pulling base is fixed to the lower mold via the sixth linear slide rail. One side of the sixth core-pulling base is connected to the drive end of the sixth pull-out cylinder, and the other end is provided with an eighth core puller that corresponds to the tenth inner hole of the second wax piece.

8. The automatic unloading mold for multi-way valve bodies according to claim 7, characterized in that, The upper mold and the lower mold are respectively provided with a first external circulation cooling circuit and a second external circulation cooling circuit, and the fifth core puller and the sixth core puller are respectively provided with a first closed-loop cooling channel and a second closed-loop cooling channel.

9. The automatic unloading mold for multi-way valve bodies according to claim 1, characterized in that, The wedge-shaped core-pulling mechanism includes a seventh pull-out cylinder, a seventh linear slide rail, an active wedge slider, a first driven block, a first positioning component, a ninth core-pulling mechanism, a second driven block, a second positioning component, and a tenth core-pulling mechanism. The seventh pull-out cylinder is horizontally fixed in the middle of the rear side of the lower mold with its drive ends facing inward. The active wedge slider is fixed to the lower mold via the seventh linear slide rail, and its tail end is connected to the drive end of the seventh pull-out cylinder. The head of the active wedge slider has a conical structure, and its two inclined surfaces are connected to the first and second driven blocks via concave-convex snap-fit ​​slide rails. The sides and top of the block are limited by the first positioning component. The first driven block is provided with three ninth core pulls on the first mold cavity side. The three ninth core pulls correspond one-to-one with the sixth, seventh and eighth inner holes of the first wax part. The sides and top of the second driven block are limited by the second positioning component. The second driven block is provided with three tenth core pulls on the second mold cavity side. The three tenth core pulls correspond one-to-one with the sixth, seventh and eighth inner holes of the second wax part. The forward and backward movement of the active wedge slider along the Y-axis is converted into the lateral core pull forward and backward movement of the first driven block and the second driven block along the X-axis.

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