A die-casting mold for an end plate

Abstract

The present invention relates to the technical field of die-casting molds, and provides a die-casting mold for an end plate, including: a fixed mold assembly; a movable mold assembly, a fixed mold assembly, a feeding assembly, an ejection assembly, and a slider mechanism. The feeding assembly has: a main runner, a first feeding groove, a second feeding groove, a third feeding groove. The lengths of the first feeding groove, the second feeding groove, and the third feeding groove are all greater than two-thirds of the width of the product cavity. Compared with the prior art, the advantage of the present invention is that by setting the lengths of the first feeding groove, the second feeding groove, and the third feeding groove provided on the injection assembly to be greater than two-thirds of the width of the product cavity, the product cavity can be fed linearly along the width direction of the product cavity when feeding, so that the molten metal will not be welded at the middle position of the end plate, thereby reducing die-casting defects such as welding marks and air holes in the product cavity and ensuring the die-casting quality of the end plate.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting molds, and particularly to a die-casting mold for an end plate. Background Art

[0002] End plate parts are relatively common mechanical parts in various mechanical structures. Most of them are flat thin plate structures, such as the cover plates of engines, speed reducers, and clutches. These end plate parts are mostly produced by die-casting molds. Since they mostly need to withstand the impact force of various oils during work, they have relatively high requirements for their structural strength during work. However, in the production process of traditional die-casting molds, due to the defect in the design of the feeding structure, welding or air entrapment phenomena will occur in the middle position of the end plate during the forming process of the end plate, resulting in die-casting defects such as welding marks, pores, and material shortage in the middle position of the end plate. Such end plates will crack under the impact of oil during work, making the end plate unable to meet the use requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a die-casting mold for an end plate in view of the current situation of the prior art.

[0004] The technical solution adopted by the present invention to solve the above technical problem is to propose a die-casting mold for an end plate, including: a fixed mold assembly;

[0005] a movable mold assembly, which is movably arranged below the fixed mold assembly, and a product cavity is formed between the fixed mold assembly and the movable mold assembly after they are fitted together;

[0006] a feeding assembly, the feeding assembly having: a main runner, which is arranged on the fixed mold assembly and communicates with the upper end surface of the fixed mold assembly; a first feeding groove, which is arranged on the fixed mold assembly, and one end of the first feeding groove communicates with the main runner; a second feeding groove, which is arranged on the movable mold assembly; a third feeding groove, which is arranged on the fixed mold assembly and both ends of the third feeding groove communicate with the first feeding groove and the product cavity respectively. The second feeding groove is below the first feeding groove and the third feeding groove. The depth of the first feeding groove on the fixed mold assembly is greater than the depth of the third feeding groove on the fixed mold assembly, and the lengths of the first feeding groove, the second feeding groove, and the third feeding groove are all greater than two-thirds of the width of the product cavity;

[0007] a ejecting assembly, which is arranged on the movable mold assembly, and the ejecting assembly is used to eject the end plate formed in the product cavity from the movable mold assembly;

[0008] A slider mechanism is provided on the moving die assembly. The slider mechanism has a side core that is movably disposed within the product mold cavity. The slider mechanism is used to drive the side core to extend into or away from the product cavity.

[0009] In the above-mentioned die-casting mold for an end plate, a plurality of waist-shaped grooves are equidistantly distributed at the bottom of the third feed groove.

[0010] In the above-mentioned die-casting mold for an end plate, a fourth feed groove is provided at one end of the second feed groove that is away from the connection with the product cavity. The depth of the fourth feed groove on the moving die assembly is less than the depth of the second feed groove.

[0011] In the above-mentioned die-casting mold for an end plate, the main runner is directly opposite the middle position of the first feed groove. A diversion bump extends outward from the middle position within the first feed groove. The cross-section of the diversion bump is an isosceles triangle, and one angle of the isosceles triangle is directly opposite the main runner.

[0012] In the above-mentioned die-casting mold for an end plate, a plurality of overflow grooves communicating with the product cavity are provided on one side of the moving die assembly and / or the fixed die assembly away from the main runner.

[0013] In the above-mentioned die-casting mold for an end plate, the slider mechanism includes:

[0014] A fixed block is provided on the side wall of the moving die assembly;

[0015] A driving member is fixedly provided on the fixed block;

[0016] A slider seat is detachably connected to the output end of the driving member;

[0017] A slider is connected to one end of the slider seat away from the driving member. A first stepped hole is provided on the slider along the moving direction of the slider. The large end of the first stepped hole faces the slider seat. A first blocking block is provided at one end of the side core away from the product cavity. When the side core passes through the first stepped hole, the first blocking block abuts against the bottom of the large end of the first stepped hole.

[0018] In the above-mentioned die-casting mold for an end plate, the ejection mechanism includes:

[0019] An ejector rod push plate is movably provided below the moving die assembly;

[0020] An ejector rod fixing plate abuts against the upper end of the ejector rod push plate. A second stepped hole penetrating the thickness direction of the ejector rod fixing plate is provided on the ejector rod fixing plate;

[0021] The ejector rod, one end of which passes through the second stepped hole and is movably inserted into the product cavity, and a second blocking block is arranged at the other end of the ejector rod. When the ejector rod passes through the second stepped hole, the second blocking block abuts against the bottom of the large end of the second stepped hole.

[0022] Compared with the prior art, the advantages of the present invention are that by setting the lengths of the first feed groove, the second feed groove and the third feed groove provided on the injection assembly to be greater than two-thirds of the width of the product cavity, the product cavity can be fed linearly along the width direction of the product cavity when feeding, so that the molten metal will not be welded at the middle position of the end plate, thereby reducing die-casting defects such as welding marks and air holes in the product cavity and ensuring the die-casting quality of the end plate. Description of the Drawings

[0023] Figure 1 is a perspective view of a die-casting mold for an end plate according to the present invention;

[0024] Figure 2 is Figure 1 the top view in

[0025] Figure 3 is Figure 2 the sectional view taken along the line A-A in

[0026] Figure 4 is a perspective view of the fixed mold assembly;

[0027] Figure 5 is a perspective view of the movable mold assembly;

[0028] Figure 6 is a perspective view of the slider;

[0029] Figure 7 is a perspective view of the side core.

[0030] In the figure, 1. fixed mold assembly; 2. movable mold assembly; 3. product cavity; 4. main runner; 5. first feed groove; 6. second feed groove; 7. third feed groove; 8. ejection assembly; 9. slider mechanism; 10. side core; 11. kidney-shaped groove; 12. fourth feed groove; 13. shunt convex block; 14. overflow groove; 15. fixed block; 16. driving part; 17. slider seat; 18. slider; 19. first stepped hole; 20. first blocking block; 21. ejector rod push plate; 22. ejector rod fixing plate; 23. second stepped hole; 24. ejector rod. Detailed Embodiments

[0031] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0032] As Figures 1 to 7As shown in the figure, a die-casting mold for an end plate according to the present invention includes: a fixed mold assembly 1; a movable mold assembly 2, which is movably arranged below the fixed mold assembly 1. After the fixed mold assembly 1 and the movable mold assembly 2 are fitted, a product cavity 3 is formed between the fixed mold assembly 1 and the movable mold assembly 2; a feeding assembly, the feeding assembly has: a main runner 4, which is arranged on the fixed mold assembly 1 and communicates with the upper end surface of the fixed mold assembly 1; a first feeding groove 5, which is arranged on the fixed mold assembly 1, and one end of the first feeding groove 5 communicates with the main runner 4; a second feeding groove 6, which is arranged on the movable mold assembly 2; a third feeding groove 7, which is arranged on the fixed mold assembly 1 and both ends of the third feeding groove 7 communicate with the first feeding groove 5 and the product cavity 3 respectively. The second feeding groove 6 is located below the first feeding groove 5 and the third feeding groove 7. The depth of the first feeding groove 5 on the fixed mold assembly 1 is greater than the depth of the third feeding groove 7 on the fixed mold assembly 1, and the lengths of the first feeding groove 5, the second feeding groove 6 and the third feeding groove 7 are all greater than two-thirds of the width of the product cavity 3; an ejection assembly 8, which is arranged on the movable mold assembly 2, and the ejection assembly 8 is used to eject the end plate formed in the product cavity 3 from the movable mold assembly 2; a slider mechanism 9, which is arranged on the movable mold assembly 2, and the slider mechanism 9 has a side core 10 movably arranged in the product cavity. The slider mechanism 9 is used to drive the side core 10 to extend into or away from the product cavity 3.

[0033] During die casting, the die casting mold is fixed on the die casting machine, and the die casting machine drives the movable mold assembly 2 to move relative to the fixed mold assembly 1 to complete the opening and closing of the die casting mold. After the movable mold assembly 2 and the fixed mold assembly 1 are attached, the die casting machine injects the molten metal from the feed assembly into the product cavity 3. When the molten metal flows in the feed assembly, it first passes through the main channel 4 and then enters the first feed trough 5. Since the depth of the third feed trough 7 is smaller than that of the first feed trough 5, the molten metal flows through the first feed trough 5 and enters the second feed trough 6 and the third feed trough 7. When the metal solution enters the product cavity 3, the flow rate of the metal solution rushing into the product cavity begins to decrease, reducing the frontal impact between the metal solution and the product cavity 3 after entering the product cavity 3, generating a vortex in the product cavity 3, surrounding the air in the product cavity 3, and finally preventing the metal solution from generating trapped air in the product to form pores on the end plate. In addition, the depth of the third feed trough 7 is smaller than that of the first feed trough 5, which can also reduce the contact area between the residual material head on the runner assembly and the end plate, preventing the end plate from being short of material when the material head is removed later. The first feed trough 5 and the second feed trough 6 are connected. The length of the third feed trough 7 is set to be greater than two-thirds of the width of the product cavity 3, so that the product cavity 3 can be fed in a straight line along the width direction of the product cavity 3, so that the metal solution will not be welded in the middle position of the end plate, thereby reducing the die-casting defects such as welding marks and pores in the product cavity 3, and ensuring the die-casting quality of the end plate. After the metal in the product cavity 3 is initially cooled and solidified, the die-casting machine drives the movable mold assembly 2 to move it to separate it from the fixed mold assembly 1. During the separation process, the side core 10 inserted into the product cavity 3 forms the side hole of the end plate while preventing the rear plate from sticking to the fixed mold assembly 1 after the mold is opened, so that the end plate can be ejected normally from the movable mold assembly 2. After the slider mechanism 9 drives the side core 10 to completely separate from the side of the end plate, the ejection assembly 8 pushes the end plate away from the movable mold assembly 2 to complete the demolding of the end plate.

[0034] Furthermore, a plurality of waist-shaped grooves 11 are evenly spaced at the bottom of the third feed trough 7 .

[0035] In the process of metal raw materials entering the product cavity 3 from the feeding assembly, the waist-shaped grooves 11 arranged at equal intervals at the bottom of the third feeding trough 7 can increase the flow rate of the metal raw materials before entering the product cavity 3, thereby increasing the feeding speed in the product cavity 3, thereby reducing the air in the product cavity 3 from being integrated into the metal solution, and finally further reducing the occurrence of die-casting defects such as end plate surface patterns, weld marks and pores.

[0036] Furthermore, a fourth feed trough 12 is provided at one end of the second feed trough 6 away from the product cavity 3 , and the depth of the fourth feed trough 12 on the movable mold assembly 2 is smaller than the depth of the second feed trough 6 .

[0037] A fourth feed groove 12 with a depth less than that of the second feed groove 6 is provided on the moving die assembly 2, which can reduce the thickness of the sprue remaining on the second feed groove 6, thereby reducing the structural strength of the sprue and making it easier for the subsequent sprue to separate from the end plate.

[0038] Further, the main runner 4 is aligned with the middle position of the first feed groove 5. A flow splitting bump 13 extends outward from the middle position within the first feed groove 5. The cross-section of the flow splitting bump 13 is an isosceles triangle, and one angle of the isosceles triangle faces the main runner 4.

[0039] Setting the main runner 4 to be aligned with the middle position of the first feed groove 5 facilitates the filling of the first feed groove 5 with the metal raw material. Since the first feed groove 5 is relatively long and the main runner 4 is aligned with the middle position of the first feed groove 5, the metal raw material fills relatively fast at the middle position of the first feed groove 5. Compared with the traditional feeding method, the feeding length of the first feed groove 5 is longer. Therefore, the filling speed on both sides of the first feed groove 5 is slower than that at the middle position. This will cause the metal raw material flowing into the product cavity 3 from the first feed groove 5 not to advance along the width direction of the product cavity 3 according to the designed route. So, in this embodiment, a flow splitting bump 13 with a cross-section of an isosceles triangle and one angle of the isosceles triangle facing the main runner 4 is provided at the middle position of the first feed groove 5. The flow splitting bump 13 reduces the filling speed at the middle part of the first feed groove 5 during the filling process of the first feed groove 5 and increases the feeding speed on both sides of the first feed groove 5, thereby ensuring that the metal raw material can enter the product cavity 3 smoothly after passing through the second feed groove 6 and the third feed groove 7.

[0040] Further, several overflow grooves 14 communicating with the product cavity 3 are provided on the side of the moving die assembly 2 and / or the fixed die assembly 1 away from the main runner 4.

[0041] After the metal raw material enters the product cavity 3, the metal raw material that first enters the product cavity 3 will lose heat during movement, and the metal that first enters the product cavity 3 will incorporate a part of the air in the product cavity 3 into the metal. If this part of the metal becomes a part of the end plate, it will cause die-casting defects such as weld lines and pores on the end plate. The overflow grooves 14 provided on the moving die assembly 2 and / or the fixed die assembly 1 and communicating with the product cavity 3 can accommodate this part of the metal, thereby reducing die-casting defects such as weld lines and pores on the end plate.

[0042] Further, the slider mechanism 9 includes: a fixed block 15 disposed on the side wall of the moving die assembly 2; a driving member 16 fixedly provided on the fixed block 15; a slider seat 17 detachably connected to the output end of the driving member 16; a slider 18 connected to one end of the slider seat 17 away from the driving member 16. A first stepped hole 19 is provided on the slider 18 along the moving direction of the slider 18. The large end of the first stepped hole 19 faces the slider seat 17. A first blocking block 20 is provided at one end of the side core 10 away from the product cavity 3. When the side core 10 passes through the first stepped hole 19, the first blocking block 20 abuts against the bottom of the large end of the first stepped hole 19.

[0043] Before the die-casting mold is closed and before the end plate ejects the moving die assembly 2, the driving member 16 drives the slider 18 to move by driving the slider seat 17 to move on the moving die assembly 2. When the slider 18 moves, it drives the connected side core 10 to move, thereby realizing the movement of the side core 10 relative to the product cavity 3. The first stepped hole 19 provided on the slider 18 and the first blocking block 20 provided on the side core 10 can fix the side core 10 in a detachable connection manner between the slider 18 and the slider seat 17, so that the slider 18 can drive the side core 10 to move when it moves. The driving member 16 is preferably an oil cylinder.

[0044] Further, the ejection mechanism includes: an ejector rod push plate 21 movably disposed below the moving die assembly 2; an ejector rod fixing plate 22 abutted against the upper end of the ejector rod push plate 21. A second stepped hole 23 penetrating the thickness direction of the ejector rod fixing plate 22 is provided on the ejector rod fixing plate 22; an ejector rod 24, one end of which passes through the second stepped hole 23 and is movably inserted into the product cavity 3. A second blocking block is provided at the other end of the ejector rod 24. When the ejector rod 24 passes through the second stepped hole 23, the second blocking block abuts against the bottom of the large end of the second stepped hole 23.

[0045] During operation, the ejection device on the die-casting machine pushes the ejector rod push plate 21 to drive the ejector rod fixing plate 22 and the ejector rod 24 to move together, thereby driving the ejector rod 24 to eject the end plate on the moving die assembly 2, and finally completing the ejection of the end plate. The second stepped hole 23 on the ejector rod fixing plate 22 and the second blocking block provided at the other end of the ejector rod 24 are used to fix the ejector rod 24 on the ejector rod fixing plate 22.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0047] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute them, but will not deviate from the scope defined by the spirit of the present invention.

Claims

1. A die-casting mold for an end plate, characterized in that , including: Fixed mold assembly; Moving mold assembly, which is movably arranged below the fixed mold assembly. After the fixed mold assembly and the moving mold assembly are fitted together, a product cavity is formed between the fixed mold assembly and the moving mold assembly; Feeding assembly, the feeding assembly has: a main runner, which is arranged on the fixed mold assembly and communicates with the upper end face of the fixed mold assembly; a first feeding groove, which is arranged on the fixed mold assembly, and one end of the first feeding groove communicates with the main runner; a second feeding groove, which is arranged on the moving mold assembly; a third feeding groove, which is arranged on the fixed mold assembly and the two ends of the third feeding groove communicate with the first feeding groove and the product cavity respectively. The second feeding groove is below the first feeding groove and the third feeding groove. The depth of the first feeding groove on the fixed mold assembly is greater than the depth of the third feeding groove on the fixed mold assembly, and the lengths of the first feeding groove, the second feeding groove and the third feeding groove are all greater than two-thirds of the width of the product cavity; Ejecting assembly, which is arranged on the moving mold assembly, and the ejecting assembly is used to eject the end plate formed in the product cavity away from the moving mold assembly; Slider mechanism, which is arranged on the moving mold assembly, and the slider mechanism has a side core movably arranged in the product cavity, and the slider mechanism is used to drive the side core to extend into or away from the product cavity.

2. The die-casting mold for an end plate according to claim 1, characterized in that, A plurality of waist-shaped grooves are equidistantly distributed at the bottom of the third feeding groove.

3. The die-casting mold for an end plate according to claim 2, characterized in that, A fourth feeding groove is arranged at one end of the second feeding groove far from the connection with the product cavity, and the depth of the fourth feeding groove on the moving mold assembly is less than the depth of the second feeding groove.

4. The die-casting mold for an end plate according to claim 1, characterized in that, The main runner is directly opposite to the middle position of the first feeding groove. A diversion bump extends outward from the middle position in the first feeding groove. The cross section of the diversion bump is an isosceles triangle, and one angle of the isosceles triangle is directly opposite to the main runner.

5. The die-casting mold for an end plate according to claim 1, characterized in that, A plurality of overflow grooves communicating with the product cavity are arranged on one side of the moving mold assembly and / or the fixed mold assembly far from the main runner.

6. The die-casting mold for an end plate according to claim 1, characterized in that, The slider mechanism includes: Fixed block, which is arranged on the side wall of the moving mold assembly; Driving part, which is fixedly arranged on the fixed block; Slider seat, which is detachably connected to the output end of the driving part; Slider, which is connected to one end of the slider seat far from the driving part. A first stepped hole is arranged on the slider along the moving direction of the slider. The large end of the first stepped hole faces the slider seat. A first blocking block is arranged at one end of the side core far from the product cavity. When the side core passes through the first stepped hole, the first blocking block abuts against the bottom of the large end of the first stepped hole.

7. The die-casting mold for an end plate according to claim 1, characterized in that, The ejecting assembly includes: Ejector rod push plate, which is movably arranged below the moving mold assembly; Ejector rod fixing plate, which abuts against the upper end of the ejector rod push plate. A second stepped hole penetrating the thickness direction of the ejector rod fixing plate is arranged on the ejector rod fixing plate; The ejector rod, one end of which passes through the second stepped hole and is movably inserted into the product cavity, and a second blocking block is provided at the other end of the ejector rod. When the ejector rod passes through the second stepped hole, the second blocking block abuts against the bottom of the large end of the second stepped hole.

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