Investment mold structure of TA2 valve body and method thereof

Abstract

The invention discloses an investment mold structure of a TA2 valve body and a method of the investment mold structure. The table top is fixedly arranged at the bottom end of an inner cavity of the vertical seat in the horizontal direction; a mounting plate is fixedly arranged at the top end of an inner cavity of the vertical seat; the first hydraulic cylinder is fixedly arranged at the top end of the vertical seat; the fixed die is fixedly arranged at the top end of the table board; the movable mold is assembled above the fixed mold, and the bottom end of the first hydraulic cylinder is fixedly arranged at the top end of the movable mold; the demolding mechanism is arranged at the top end of the tabletop; and the injection molding opening moving mechanism is arranged at the top end of the movable mold. According to the fired mold structure of the TA2 valve body and the method of the fired mold structure, the demolding mechanism is arranged, so that the pull handle can be automatically controlled to move towards the outer side to support and move the plug core and the insertion column, the movable mold can be separated after the insertion column is separated from the movable mold and the fixed mold, and the fired mold is supported by controlling the plug core, so that workers can conveniently demold the fired mold.

Description

Technical Field

[0001] The invention relates to the field of investment mold technology, in particular to an investment mold structure of a TA2 valve body and a method thereof. Background Art

[0002] The products obtained by investment casting are precise and complex, close to the final shape of the parts, and can be used directly without processing or with little processing. It is an advanced process of near-net shape and an excellent process technology in the casting industry. It is widely used. It is not only suitable for casting of various types and alloys, but also produces castings with higher dimensional accuracy and surface quality than other casting methods. Even complex, high-temperature resistant and difficult-to-process castings that are difficult to cast by other casting methods can be cast by investment casting. The investment casting process is to select suitable investment materials to make investment molds, repeatedly apply refractory coatings on the investment molds, sprinkle refractory sand, harden and dry them, and then melt the internal investment mold materials; then obtain a shell mold with sufficient strength and no residual investment mold materials through roasting, which is used to pour molten metal, thereby obtaining high-precision castings;

[0003] Injection molding is usually used to make the valve body investment mold. However, after the valve body injection molded investment mold is opened, it is not easy to take out the investment mold separately due to the large valve body, and demolding is difficult. In addition, after the residual investment material at the injection port is connected to the valve body investment mold, the valve body investment mold is easily damaged during demolding, thereby reducing production quality. Summary of the invention

[0004] The object of the present invention is to provide a TA2 valve body investment mold structure and method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a TA2 valve body investment mold structure, comprising: a stand, a table, a mounting plate, a first hydraulic cylinder, a fixed mold, a movable mold, a demolding mechanism and an injection port moving mechanism; the table is fixedly arranged at the bottom end of the inner cavity of the stand along the horizontal direction; the mounting plate is fixedly arranged at the top end of the inner cavity of the stand; the first hydraulic cylinder is fixedly arranged at the top end of the stand; the fixed mold is fixedly arranged at the top end of the table; the movable mold is assembled above the fixed mold, and the bottom end of the first hydraulic cylinder is fixedly arranged at the top end of the movable mold; the demolding mechanism is arranged at the top end of the table; and the injection port moving mechanism is arranged at the top end of the movable mold.

[0006] Preferably, the demolding mechanism includes: a plugging core, which is inserted into the front sides of the left and right ends of the fixed mold and the movable mold; the outer side of the plugging core extends out of the outer side of the fixed mold and the movable mold and is fixedly provided with a sealing cover; the inner side of the sealing cover is fixedly provided with a plurality of plug posts along the circumferential direction, and the plug posts are fixedly connected to the outer sides of the fixed mold and the movable mold.

[0007] Preferably, a pull handle is fixedly provided on the front side of the front sealing cover.

[0008] Preferably, the demoulding mechanism also includes: a cylinder, which is fixedly arranged on both sides of the inner bottom end of the stand; one end of the cylinder extends out of the outside of the stand and is fixedly arranged with a support column; a guide rod is fixedly arranged on the inner side of the support column, and the guide rod is adapted to be plugged into the outer side of the table top; a strip groove is opened at the top end of the outer side of the support column, and a support plate is plugged into the inner cavity of the strip groove; a second hydraulic cylinder is fixedly arranged on the outer side of the support column; a support plate is fixedly arranged on the top end of the second hydraulic cylinder, and the support plate is plugged into the inner cavity of the strip groove, and the support plate is fixedly arranged at the bottom end of the support plate; a connecting column is fixedly arranged on the inner side of the support plate, and the support plate is fixedly connected to the outer side of the sealing cover.

[0009] Preferably, both front and rear sides of the inner cavity of the strip groove are provided with slide grooves in the up-down direction, a sliding block is inserted into the inner cavity of the slide groove, and the sliding block is fixedly arranged on the outer side of the support plate.

[0010] Preferably, the injection port moving mechanism includes: a sliding plate, grooves are provided on both sides of the top of the movable mold, and the sliding plate is plugged into one side of the inner cavity of the groove; the stud is screwed to the top of the sliding plate, and the stud is communicated with the inner cavity of the movable mold; the injection tube is fixedly arranged on the top of the stud, and the injection tube is communicated with the inner cavity of the stud, and the injection tube extends out of the inner cavity of the groove.

[0011] Preferably, the bottom end of the sliding plate is arc-shaped and matches the curvature of the inner cavity of the movable mold.

[0012] A method for making an investment mold of a TA2 valve body comprises the following steps:

[0013] Step 1: Assemble and merge the movable mold and the fixed mold, insert the plug and the plug into the movable mold and the fixed mold, and inject the mold liquid into the movable mold and the fixed mold through the injection tube on one side. After the mold liquid fills the fixed mold and the movable mold, the mold liquid flows out through the injection tube on the other side, so as to confirm that the mold injection is completed;

[0014] Step 2: When demolding, push the injection tube inward to move the sliding plate inward, so as to separate the melt mold in the injection tube at the top of the melt mold from the melt mold in the movable mold, and rotate the injection tube to separate the stud from the top of the sliding plate, so as to facilitate the cleaning of the stud and the residual melt mold in the injection tube, thereby avoiding the movable mold driving the melt mold to move and damage the melt mold when moving the movable mold, so as to ensure product quality;

[0015] Step 3: Start the first hydraulic cylinder to drive the movable mold to move upward to open the mold. After the movable mold is raised, start the cylinder to push the support column to move outward so that the support column moves outward under the restriction of the guide rod, and the support plate can drive the support plate to move outward, thereby pulling the sealing cover outward through the pull handle to make the plugging core and the plugging column on the left and right sides of the movable mold and the fixed mold move outward. When the plugging column is pulled out of the outer side of the movable mold and the fixed mold, start the second hydraulic cylinder to push the support plate upward so that the support plate pushes the support plate to move vertically upward under the restriction of the slide groove and the slider to drive the plugging core to move upward and lift the melt mold from the inner cavity of the fixed mold to facilitate the staff to demold the melt mold. When demolding the large valve body melt mold, the melt mold is lifted up with the help of the plugging cores on both sides, so that the staff can independently complete the demolding operation, and the demolding effect of the melt mold is stable, avoiding damage and reducing the difficulty of demolding.

[0016] The invention provides a TA2 valve body investment mold structure and method thereof, which has the following beneficial effects:

[0017] 1. The present invention can move the injection tube by providing an injection port moving mechanism, so that the sliding plate can cut off and separate the melt mold, thereby preventing the movable mold from moving and damaging the melt mold when the movable mold is moved, thereby ensuring product quality, and the stud and the injection tube can be separated from the sliding plate by rotating the injection tube, thereby facilitating the cleaning of the melt mold in the injection tube and the stud for subsequent injection molding;

[0018] 2. The present invention is equipped with a demolding mechanism that can automatically control the pull handle to move outward to support the movement of the plugging core and the plugging column. The movable mold can be separated by separating the plugging column from the movable mold and the fixed mold. The molten mold can be lifted up by controlling the plugging core to facilitate the staff to demold the molten mold, so that the staff can independently complete the demolding operation, and the demolding effect of the molten mold is stable, avoiding damage and reducing the difficulty of demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 A in the enlarged view;

[0021] Figure 3 It is a right side cross-sectional view of the fixed mold and the movable mold of the present invention;

[0022] Figure 4 It is a front cross-sectional view of the fixed mold and the movable mold of the present invention;

[0023] Figure 5 It is a right side cross-sectional view of the support column of the present invention.

[0024] In the figure: 1. stand; 2. table; 3. mounting plate; 4. hydraulic cylinder; 5. fixed mold; 6. movable mold; 7. demoulding mechanism; 71. plug core; 72. sealing cover; 73. plug column; 74. pull handle; 75. cylinder; 76. support column; 77. guide rod; 78. support plate; 79. strip groove; 710. second hydraulic cylinder; 711. support plate; 712. connecting column; 713. slide groove; 714. slider; 8. injection port moving mechanism; 81. sliding plate; 82. groove; 83. stud; 84. injection tube. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1, please refer to Figure 1-5 The present invention provides a technical solution: an investment mold structure of a TA2 valve body and a method thereof, providing an investment mold structure of a TA2 valve body, comprising: a stand 1, a table 2, a mounting plate 3, a first hydraulic cylinder 4, a fixed mold 5, a movable mold 6, a demoulding mechanism 7 and an injection port moving mechanism 8;

[0027] The table 2 is fixedly arranged at the bottom end of the inner cavity of the stand 1 in the horizontal direction, the mounting plate 3 is fixedly arranged at the top end of the inner cavity of the stand 1, the first hydraulic cylinder 4 is fixedly arranged at the top end of the stand 1, the fixed mold 5 is fixedly arranged at the top end of the table 2, the movable mold 6 is assembled above the fixed mold 5, and the bottom end of the first hydraulic cylinder 4 is fixedly arranged at the top end of the movable mold 6, the demolding mechanism 7 is arranged at the top end of the table 2, and the injection port moving mechanism 8 is arranged at the top end of the movable mold 6.

[0028] As a preferred solution, further, the demoulding mechanism 7 includes: a plug core 71, a sealing cover 72, a plug column 73, a pull handle 74, a cylinder 75, a support column 76, a guide rod 77, a support plate 78, a strip groove 79, a second hydraulic cylinder 710, a support plate 711, a connecting column 712, a slide groove 713 and a slider 714;

[0029] In order to enable injection molding of the molten mold, plugging cores 71 are inserted into the front sides of the left and right ends of the fixed mold 5 and the movable mold 6. The outer side of the plugging core 71 extends out of the outer side of the fixed mold 5 and the movable mold 6 and is fixedly provided with a sealing cover 72. The inner side of the sealing cover 72 is fixedly provided with a plurality of plug posts 73 along the circumferential direction, and the plug posts 73 are fixedly connected to the outer sides of the fixed mold 5 and the movable mold 6. The molten mold in the fixed mold 5 and the movable mold 6 is shaped by the plugging core 71 and the plug posts 73.

[0030] As a preferred solution, further, a pull handle 74 is fixedly provided on the front side of the front sealing cover 72 to facilitate pulling out the front sealing cover 72 .

[0031] In order to facilitate the mold support, cylinders 75 are fixedly arranged on both sides of the inner bottom end of the stand 1, and one end of the cylinder 75 extends out of the outer side of the stand 1 and is fixedly arranged with a support column 76;

[0032] In order to support the support column 76, the guide rod 77 is fixedly arranged on the inner side of the support column 76, and the guide rod 77 is adapted and plugged with the outer side of the table 2;

[0033] In order to support the sealing cover 72, a strip groove 79 is opened at the outer top end of the support column 76, and the inner cavity of the strip groove 79 is plugged with a support plate 78, the second hydraulic cylinder 710 is fixedly set on the outer side of the support column 76, the support plate 711 is fixedly set at the top end of the second hydraulic cylinder 710, and the support plate 711 is plugged with the inner cavity of the strip groove 79, the support plate 711 is fixedly set at the bottom end of the support plate 78, the connecting column 712 is fixedly set on the inner side of the support plate 78, and the support plate 78 is fixedly connected to the outer side of the sealing cover 72, the second hydraulic cylinder 710 can push the support plate 711 to move upward, so that the support plate 711 pushes the support plate 78 to move vertically upward under the restriction of the slide groove 713 and the slider 714.

[0034] In order to limit the support plate 78 , the inner cavity of the strip groove 79 is provided with a slide groove 713 along the up and down direction on both the front and rear sides. The inner cavity of the slide groove 713 is inserted with a slider 714 , and the slider 714 is fixedly arranged on the outer side of the support plate 78 .

[0035] As a preferred solution, further, the injection port moving mechanism 8 includes: a sliding plate 81, a groove 82, a stud 83 and an injection tube 84;

[0036] In order to clean the injection molded product, grooves 82 are provided on both sides of the top of the movable mold 6, and the sliding plate 81 is plugged into one side of the inner cavity of the groove 82, and the stud 83 is screwed into the top of the sliding plate 81, and the stud 83 is communicated with the inner cavity of the movable mold 6;

[0037] In order to remove the stud 83 and the injection tube 84 , the injection tube 84 is fixedly disposed on the top of the stud 83 , and the injection tube 84 is communicated with the inner cavity of the stud 83 , and the injection tube 84 extends out of the inner cavity of the groove 82 .

[0038] As a preferred solution, further, the bottom end of the sliding plate 81 is arc-shaped and matches the curvature of the inner cavity of the movable mold 6 , so that the sliding plate 81 matches the inner cavity of the movable mold 6 .

[0039] A method for making an investment mold of a TA2 valve body comprises the following steps:

[0040] Step 1: Assemble and merge the movable mold 6 and the fixed mold 5, insert the plug 71 and the plug post 73 into the movable mold 6 and the fixed mold 5, and inject the mold liquid into the movable mold 6 and the fixed mold 5 through the injection tube 84 on one side. After the mold liquid fills the fixed mold 5 and the movable mold 6, the mold liquid flows out through the injection tube 84 on the other side, so as to confirm that the mold injection is completed;

[0041] Step 2: When demolding, push the injection tube 84 inward to move the sliding plate 81 inward, so as to separate the melt in the injection tube 84 at the top of the melt from the melt in the movable mold 6, and rotate the injection tube 84 to separate the stud 83 from the top of the sliding plate 81, so as to facilitate the cleaning of the stud 83 and the residual melt in the injection tube 84, thereby avoiding the movable mold 6 driving the melt to move and destroy the melt when moving the movable mold 6, so as to ensure the product quality;

[0042] Step 3: Start the first hydraulic cylinder 4 to drive the movable mold 6 to move upward to open the mold. After the movable mold 6 is raised, start the cylinder 75 to drive the support column 76 to move outward, so that the support column 78 moves outward under the restriction of the guide rod 77. The support plate 76 can drive the support plate 78 to move outward, thereby pulling the sealing cover 72 outward through the pull handle 74 to move the plug core 71 and the plug column 73 on the left and right sides of the movable mold 6 and the fixed mold 5 outward. When the plug column 73 is pulled out of the outer side of the movable mold 6 and the fixed mold 5, start the second hydraulic cylinder 710 to 0 pushes the supporting plate 711 to move upward, so that the supporting plate 711 pushes the supporting plate 78 to move vertically upward under the restriction of the slide groove 713 and the slider 714, so as to drive the plugging core 71 to move upward, and lift the melt mold from the inner cavity of the fixed mold 5, so that the staff can demould the melt mold, and continue to control the cylinder 75 to push the supporting column 76 to move outward to separate the plugging core 71 from the melt mold. When demoulding the large valve body melt mold, the melt mold is lifted by the plugging cores 71 on both sides, so that the staff can independently complete the demoulding operation, and the demoulding effect of the melt mold is stable, avoiding damage and reducing the difficulty of demoulding.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An investment mold structure for a TA2 valve body, characterized in that: include; stand(1); A table top (2) is fixedly arranged at the bottom end of the inner cavity of the stand (1) in a horizontal direction; A mounting plate (3) fixedly arranged on the top of the inner cavity of the stand (1); A first hydraulic cylinder (4) is fixedly arranged on the top of the stand (1); A fixed mold (5) is fixedly arranged on the top of the table (2); A movable mold (6) is mounted above the fixed mold (5), and the bottom end of the first hydraulic cylinder (4) is fixedly arranged on the top end of the movable mold (6); A demoulding mechanism (7) is arranged on the top of the table (2); The injection port moving mechanism (8) is arranged at the top end of the movable mold (6).

2. The investment mold structure of a TA2 valve body according to claim 1, characterized in that: The demoulding mechanism (7) comprises: A plugging core (71), the left and right front sides of the fixed mold (5) and the movable mold (6) are both plugged with a plugging core (71); A sealing cover (72), the outer side of the plugging core (71) extends out of the outer sides of the fixed mold (5) and the movable mold (6) and is fixedly provided with the sealing cover (72); Insertion columns (73), a plurality of insertion columns (73) are fixedly arranged along the circumferential direction on the inner side of the sealing cover (72), and the insertion columns (73) are fixedly connected to the outer sides of the fixed mold (5) and the movable mold (6).

3. The investment mold structure of a TA2 valve body according to claim 2, characterized in that: A pull handle (74) is fixedly provided on the front side of the sealing cover (72) at the front side.

4. The investment mold structure of a TA2 valve body according to claim 3, characterized in that: The demoulding mechanism (7) further comprises: Cylinders (75), the cylinders (75) are fixedly arranged on both left and right sides of the inner bottom end of the stand (1); A support column (76), one end of the cylinder (75) extends out of the outside of the stand (1) and is fixedly provided with the support column (76); A guide rod (77) is fixedly arranged on the inner side of the support column (76), and the guide rod (77) is adapted to be plugged into the outer side of the table top (2); A support plate (78), wherein a strip groove (79) is formed on the outer top end of the support column (76), and the support plate (78) is inserted into the inner cavity of the strip groove (79); A second hydraulic cylinder (710) is fixedly disposed on the outer side of the support column (76); A support plate (711) is fixedly arranged at the top end of the second hydraulic cylinder (710), and the support plate (711) is plugged into the inner cavity of the strip groove (79), and the support plate (711) is fixedly arranged at the bottom end of the support plate (78); The connecting column (712) is fixedly arranged on the inner side of the supporting plate (78), and the supporting plate (78) is fixedly connected to the outer side of the sealing cover (72).

5. The investment mold structure of a TA2 valve body according to claim 4, characterized in that: The inner cavity of the strip groove (79) is provided with sliding grooves (713) in the up-down direction on both the front and rear sides thereof, the inner cavity of the sliding groove (713) is plugged with a sliding block (714), and the sliding block (714) is fixedly arranged on the outer side of the support plate (78).

6. The investment mold structure of a TA2 valve body according to claim 1, characterized in that: The injection port moving mechanism (8) comprises: A sliding plate (81), grooves (82) are provided on both the left and right sides of the top of the movable mold (6), and the sliding plate (81) is plugged into one side of the inner cavity of the groove (82); A stud (83) is screwed to the top of the sliding plate (81), and the stud (83) is in communication with the inner cavity of the movable mold (6); An injection tube (84) is fixedly arranged on the top end of the stud (83), the injection tube (84) is communicated with the inner cavity of the stud (83), and the injection tube (84) extends out of the inner cavity of the groove (82).

7. The investment mold structure of a TA2 valve body according to claim 6, characterized in that: The bottom end of the sliding plate (81) is arc-shaped and matches the curvature of the inner cavity of the movable mold (6).

8. The method for using the investment mold structure of a TA2 valve body according to claim 4, characterized in that: The following steps are involved: Step 1: Assemble and merge the movable mold (6) and the fixed mold (5), insert the plugging core (71) and the plug post (73) into the movable mold (6) and the fixed mold (5), and inject the mold liquid into the movable mold (6) and the fixed mold (5) through the injection tube (84) on one side, so that the mold liquid fills the fixed mold (5) and the movable mold (6), and then the mold liquid flows out through the injection tube (84) on the other side; Step 2: When demolding, the injection tube (84) is pushed inwardly to move the sliding plate (81) inwardly, thereby separating the melt mold in the injection tube (84) at the top of the melt mold from the melt mold in the movable mold (6), and rotating the injection tube (84) to separate the stud (83) from the top of the sliding plate (81), thereby facilitating the cleaning of the residual melt mold in the stud (83) and the injection tube (84); Step 3: Start the first hydraulic cylinder (4) so ​​that the first hydraulic cylinder (4) drives the movable mold (6) to move upward to open the mold. After the movable mold (6) rises, start the cylinder (75) so that the cylinder (75) pushes the support column (76) to move outward, so that the support column (76) moves outward under the restriction of the guide rod (77), and the support plate (76) can drive the support plate (78) to move outward, thereby pulling the sealing cover (72) outward through the pull handle (74), so that the movable mold (6) and the fixed mold (5) The plugging core (71) and the inserting column (73) on the left and right sides move outward. When the inserting column (73) is pulled out of the outer sides of the movable mold (6) and the fixed mold (5), the second hydraulic cylinder (710) is started to enable the second hydraulic cylinder (710) to push the supporting plate (711) to move upward, so that the supporting plate (711) pushes the supporting plate (78) to move vertically upward under the restriction of the sliding groove (713) and the sliding block (714), so as to drive the plugging core (71) to move upward and lift the melt mold from the inner cavity of the fixed mold (5).

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