Bent hole demolding forming device based on MIM technology

Abstract

The utility model provides a bent hole demoulding forming device based on an MIM technology, which comprises a mould consisting of a plate A, a plate B, a plate C, a support column and a clamping piece, and an injection molding opening is formed in the middle of the top end of the plate A; the plate C, the supporting column and the clamping piece are arranged between the plate A and the plate B, the supporting column is arranged at the top of the plate C and used for supporting the clamping piece, and drawing structures are arranged on the two side faces of the mold. A linkage structure composed of the first plate, the second plate and the connecting holes used in cooperation with the hydraulic device enables the hydraulic device to achieve a slight receding effect during rotation, so that an auxiliary part can be pulled out without hindrance, the integrity of a product is guaranteed, and it is guaranteed that the product is flawless.

Description

Technical Field

[0001] The utility model relates to a bending hole demoulding and forming device based on MIM technology. Background Art

[0002] Metal Injection Molding (MIM) technology is an advanced manufacturing technology that mixes metal powder with an organic binder and manufactures three-dimensional complex-shaped metal parts through injection molding. However, in actual use, due to the special shape of the bending hole, the integrity of the manufactured product needs to be considered during demoulding. Conventional forming molds are only driven by a hydraulic or mechanical system to separate the molds, but the corresponding sliding demoulding structure matching the hydraulic or mechanical system drive is likely to cause certain damage to the product, resulting in possible defects or even breakage of the product. Summary of the Utility Model

[0003] The utility model provides a bending hole demoulding and forming device based on MIM technology, which can effectively solve the above problems.

[0004] The utility model is realized as follows:

[0005] A bending hole demoulding and forming device based on MIM technology includes a mold composed of an A plate, a B plate, a C plate, support columns and clamping parts. An injection port is formed in the middle of the top end of the A plate; the C plate, the support columns and the clamping parts are arranged between the A plate and the B plate. The support columns are arranged on the top of the C plate to support the clamping parts. Pulling structures are arranged on both sides of the mold. Among them, the pulling structure includes

[0006] A first plate and a second plate. A connecting hole for the rotation of a rotating block is formed on the corresponding surfaces of the first plate and the second plate. The two ends of the rotating block are provided with rotating shafts connected to the connecting holes for rotation. A hydraulic device is installed in the middle of the rotating block. One end of the hydraulic device is provided with a connecting piece. One end of the connecting piece is connected with a pulling plate. Sliding convex edges are arranged on both sides of the pulling plate;

[0007] It further includes a third plate and a fourth plate. Arc-shaped chutes are formed on the corresponding surfaces of the third plate and the fourth plate, which are connected with the sliding convex edges; among them, the hydraulic device drives the connecting piece and the pulling plate to slide downward in the arc-shaped chutes on the third plate and the fourth plate, so that an auxiliary part connected to the pulling plate is drawn out of the mold to complete demoulding.

[0008] As a further improvement, the hydraulic device includes a hydraulic cylinder. A hydraulic rod is arranged at one end of the hydraulic cylinder. The hydraulic rod is connected with the connecting piece to complete demoulding.

[0009] As a further improvement, the inner diameter of the connecting hole is larger than the outer diameter of the rotating shaft.

[0010] As a further improvement, a first clamping plate, a second clamping plate, and a first pressing plate and a second pressing plate are provided between the A plate and the clamping member, and the first pressing plate and the second pressing plate are placed at the lower ends of the first clamping plate and the second clamping plate.

[0011] As a further improvement, the first clamping plate and the second clamping plate are assembled to form a guide column, and a guide port is formed at one end of the guide column.

[0012] As a further improvement, the first clamping plate and the second clamping plate are assembled to form a guide groove, and the left and right ends of the guide groove are connected to diversion grooves to allow the solution to enter the mold to form a product.

[0013] As a further improvement, the joints between the first pressing plate and the second pressing plate, and the first clamping plate and the second clamping plate are provided with sealing gaskets.

[0014] Connecting rods are provided at the four corners of the fixed end of the clamping piece.

[0015] The beneficial effects of the utility model are:

[0016] (1) In this case, the solution is poured into the guide column from the injection port, and the solution enters the diversion groove along the guide groove. The solution in the diversion groove then falls into the cavity in the mold, and the auxiliary parts are also extended into the mold cavity, thereby completing the pouring. After the pouring is completed, the hydraulic device is turned on, and the hydraulic rod in the hydraulic device drives the connecting parts and the pull-out plate to slide downward on the arc-shaped slide grooves on the third plate and the fourth plate, so that the auxiliary parts connected to the pull-out plate are pulled out of the mold to complete the demoulding. At the same time, the linkage structure composed of the first plate, the second plate and the connecting hole used in conjunction with the hydraulic device enables the hydraulic device to achieve a slight giving effect when rotating, so that the auxiliary parts can be pulled out without hindrance, thereby ensuring the integrity of the product and ensuring that the product is flawless. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is the main view of the present utility model.

[0019] Figure 2 It is an exploded view of the present utility model.

[0020] Figure 3 It is a splicing schematic diagram of the first clamping plate, the second clamping plate, the first pressing plate and the second pressing plate of the present utility model.

[0021] Figure 4 It is a structural schematic diagram of the hydraulic cylinder of the present utility model.

[0022] Explanation of the reference numerals in the attached drawings:

[0023] 1. Plate A; 2. Plate B; 3. Plate C; 4. Support column; 5. Clamping member;

[0024] 6. Pulling structure; 60. First plate; 61. Second plate; 62. Connecting hole; 63. Rotating block; 64. Rotating shaft; 65. Hydraulic cylinder; 66. Hydraulic rod; 67. Pulling plate; 68. Sliding convex edge; 69. Connecting member; 610. Third plate; 611. Fourth plate; 612. Arc-shaped chute;

[0025] 7. Connecting rod; 8. Injection port; 9. First clamping plate; 10. Second clamping plate; 11. First pressing plate; 12. Second pressing plate; 13. Diversion column; 14. Diversion port; 15. Diversion groove; 16. Shunt groove; 17. Auxiliary member. Specific embodiments

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "plural" means two or more unless otherwise specifically defined.

[0028] Refer to Figures 1-4As shown in the figure, a bending hole demoulding and forming device based on MIM technology includes a mould composed of a plate A 1, a plate B 2, a plate C 3, support columns 4 and clamping parts 5. An injection port 8 is formed in the middle of the top end of the plate A 1; the plate C 3, the support columns 4 and the clamping parts 5 are arranged between the plate A 1 and the plate B 2, and the support columns 4 are arranged on the top of the plate C 3 for supporting the clamping parts 5.

[0029] Pulling structures 6 are arranged on both side surfaces of the mould. The pulling structure 6 includes a first plate 60 and a second plate 61. A connecting hole 62 for the rotation of a rotating block 63 is formed on the opposite surfaces of the first plate 60 and the second plate 61. Rotating shafts 64 for connecting and rotating with the connecting hole 62 are arranged at both ends of the rotating block 63. A hydraulic device is installed in the middle of the rotating block 63. One end of the hydraulic device is provided with a connecting part 69. One end of the connecting part 69 is connected with a pulling plate 67. Sliding convex edges 68 are arranged on both sides of the pulling plate 67; it also includes a third plate 610 and a fourth plate 611. Arc-shaped sliding grooves 612 are formed on the opposite surfaces of the third plate 610 and the fourth plate 611 corresponding to the sliding convex edges 68.

[0030] It should be noted that since the product in this case is a specific product, a special auxiliary part 17 needs to be set. After the product is formed, the auxiliary part 17 is pulled out, and a hollow cavity is formed at one end of the product, thereby completing and determining the shape of the product.

[0031] The working principle of this case is as follows: First, structures such as the plate A 1, the plate B 2, the plate C 3, the support columns 4 and the clamping parts 5 are assembled. Subsequently, the solution is poured into the diversion column 13 from the injection port 8. The solution flows along the diversion groove 15 into the diversion slot 16, and the solution in the diversion slot 16 then falls into the cavity in the mould. The auxiliary part 17 also extends into the cavity in the mould, thereby completing the perfusion. After the perfusion is completed, the hydraulic device is started. The hydraulic rod 66 in the hydraulic device drives the connecting part 69 and the pulling plate 67 to slide downward along the arc-shaped sliding grooves 612 on the third plate 610 and the fourth plate 611, so that the auxiliary part 17 connected to the pulling plate 67 is pulled out of the mould, completing the demoulding.

[0032] The hydraulic device includes a hydraulic cylinder 65. A hydraulic rod 66 is arranged at one end of the hydraulic cylinder 65. The hydraulic rod 66 is connected with the connecting part 69, thereby completing the demoulding. Among them, the hydraulic device is a prior art and will not be elaborated here.

[0033] The inner diameter of the connecting hole 62 is larger than the outer diameter of the rotating shaft 64. It should be noted that the inner diameter of the connecting hole 62 is slightly larger than the outer diameter of the rotating shaft 64, and it is necessary to ensure that the rotating shaft 64 can be restricted within the connecting hole 62 to prevent the rotating shaft 64 from disengaging from the connecting hole 62 during rotation. Further, when the hydraulic device pulls the connecting member 69 and the pulling plate 67, since the arc-shaped chute 612 is a special-shaped slideway, when the sliding convex edges 68 on both sides of the pulling plate 67 slide on the arc-shaped chute 612, they can form a linkage with the special-shaped slideway to prevent the pulling plate 67 from being unable to slide on the slideway, thereby facilitating the removal of the auxiliary member 17 from the mold.

[0034] A first clamping plate 9, a second clamping plate 10, a first pressing plate 11, and a second pressing plate 12 are provided between the A plate 1 and the clamping member 5. The first pressing plate 11 and the second pressing plate 12 are placed at the lower ends of the first clamping plate 9 and the second clamping plate 10; the first clamping plate 9 and the second clamping plate 10 are assembled to form a diversion column 13, and a diversion port 14 is formed at one end of the diversion column 13; the first clamping plate 9 and the second clamping plate 10 are assembled to form a diversion groove 15, and diversion grooves 16 are connected to the left and right ends of the diversion groove 15, so that the solution enters the mold to form a product.

[0035] Further, sealing gaskets are respectively provided at the splicing gaps where the first pressing plate 11 and the second pressing plate 12, the first clamping plate 9 and the second clamping plate 10 are spliced. Among them, the sealing gasket is made of rubber or metal material, etc. The specific material can be selected according to actual needs.

[0036] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bent hole demoulding molding device based on MIM technology, comprising a mold consisting of an A plate (1), a B plate (2), a C plate (3), a support column (4) and a clamping member (5), wherein an injection port (8) is formed in the middle of the top end of the A plate (1); the C plate (3), the support column (4) and the clamping member (5) are placed between the A plate (1) and the B plate (2), and the support column (4) is arranged on the top of the C plate (3) for supporting the clamping member (5), characterized in that: Both sides of the mold are provided with a pull-out structure (6), wherein the pull-out structure (6) includes A first plate (60) and a second plate (61), a connecting hole (62) for rotating a rotating block (63) is formed on one side corresponding to the first plate (60) and the second plate (61), a rotating shaft (64) connected to and rotating with the connecting hole (62) is provided at both ends of the rotating block (63), a hydraulic device is installed in the middle of the rotating block (63), a connecting piece (69) is provided at one end of the hydraulic device, a pull-out plate (67) is connected to one end of the connecting piece (69), and sliding convex edges (68) are provided on both sides of the pull-out plate (67); It also includes a third plate (610) and a fourth plate (611), and the sides corresponding to the third plate (610) and the fourth plate (611) are formed with the sliding convex edge (68); wherein the hydraulic device drives the connecting member (69) and the pull-out plate (67) to slide downward on the arc-shaped sliding groove (612) on the third plate (610) and the fourth plate (611), so that the auxiliary member (17) connected to the pull-out plate (67) is pulled out of the mold to complete the demoulding.

2. The bent hole demoulding forming device based on MIM technology according to claim 1, characterized in that: The hydraulic device comprises a hydraulic cylinder (65), one end of which is provided with a hydraulic rod (66), and the hydraulic rod (66) is connected to the connecting piece (69), thereby completing demoulding.

3. The bent hole demoulding forming device based on MIM technology according to claim 1, characterized in that: The inner diameter of the connecting hole (62) is larger than the outer diameter of the rotating shaft (64).

4. The bent hole demoulding forming device based on MIM technology according to claim 1, characterized in that: A first clamping plate (9) and a second clamping plate (10) and a first pressing plate (11) and a second pressing plate (12) are provided between the A plate (1) and the clamping member (5), and the first pressing plate (11) and the second pressing plate (12) are placed at the lower ends of the first clamping plate (9) and the second clamping plate (10).

5. The bent hole demoulding forming device based on MIM technology according to claim 4, characterized in that: The first clamping plate (9) and the second clamping plate (10) are assembled to form a guide column (13), and a guide port (14) is formed at one end of the guide column (13).

6. The bent hole demoulding forming device based on MIM technology according to claim 4, characterized in that: The first clamping plate (9) and the second clamping plate (10) are assembled to form a guide groove (15), and the left and right ends of the guide groove (15) are connected to a diversion groove (16), so that the solution enters the mold to form a product.

7. The bent hole demoulding forming device based on MIM technology according to claim 4, characterized in that: Sealing gaskets are provided at the joint gaps between the first pressing plate (11) and the second pressing plate (12), and the first clamping plate (9) and the second clamping plate (10).

8. The bent hole demoulding forming device based on MIM technology according to claim 1, characterized in that: Connecting rods (7) are provided at the four corners of the fixed end of the clamping member (5).

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