Die-casting die with double-wedge core-pulling structure

Abstract

The utility model belongs to the field of dies, and provides a die-casting die with a double-wedge core-pulling structure, which comprises a fixed die holder and a movable die holder. And the first forming assembly is arranged on the movable mold base, a first forming rod is arranged on the first forming assembly, and the first forming rod can penetrate through the first wedge block and is movably inserted into the second wedge block when extending into the product cavity, so that the first forming rod is supported in a horizontal posture. Compared with the prior art, the forming device has the advantages that through the design of the first wedge block and the second wedge block, the stability is guaranteed when the first through hole is formed by the first forming rod, and the first forming rod is prevented from falling and inclining in the forming process to influence the forming quality of a product; and meanwhile, a second through hole is stably formed through the second forming rod, certain supporting force can be provided for the first forming rod, secondary machining operation is not needed, accurate connection between the two through holes is ensured, the stability of the whole forming structure is enhanced, and the overall quality of a product is improved.

Description

Technical Field

[0001] The utility model belongs to the field of molds, and in particular relates to a die-casting mold with a double-wedge core-pulling structure. Background Art

[0002] With the rapid development of technology, people have higher and higher requirements for product processing technology and processing quality.

[0003] When it is necessary to form a first through hole and a second through hole that are perpendicular to each other and connected inside a product, the traditional solution is mostly to use secondary machining to achieve it, that is, to pre-form a first through hole with a larger depth through a mold, and then use machining to form the second through hole. In this process, the positioning and clamping of the product will inevitably affect the accuracy of the connection between the first through hole and the second through hole. At the same time, because the depth of the first through hole is relatively large, the first forming rod in the mold is prone to falling and tilting due to the long distance when forming the first through hole, which ultimately affects the molding quality of the product. If the first through hole is pre-formed using a mold, the subsequent machining will not be able to complete the longer second through hole structure. It can be seen that these methods cannot meet the processing accuracy and processing quality required by the product, and the low production efficiency cannot be applied to large-scale production needs. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a die-casting mold with a double-wedge core-pulling structure.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a die-casting die with a double-wedge core-pulling structure, which is used for forming a first through hole and a second through hole that are perpendicular to and connected to each other on a product, wherein the axis of the first through hole and the axis of the second through hole are not coplanar, and the depth of the first through hole is greater than the depth of the second through hole, comprising: a fixed die base;

[0006] A movable mold base is movably arranged below the fixed mold base, and after the fixed mold base and the movable mold base are attached to each other, a product cavity is formed between the fixed mold base and the movable mold base;

[0007] A first wedge block and a second wedge block are spaced apart and arranged in the fixed mold seat, and the first wedge block and the second wedge block can movably abut against the bottom wall of the product cavity when the die-casting mold is closed;

[0008] a first molding assembly disposed on the movable mold base, wherein the first molding assembly is provided with a first molding rod, and when the first molding rod is inserted into the product cavity, the first molding rod can pass through the first wedge block and be movably inserted into the second wedge block to support the first molding rod in a horizontal posture;

[0009] A second forming assembly is arranged on the movable die holder and arranged perpendicularly to the first forming assembly, and a second forming rod is arranged on the second forming assembly, and an inner concave arc-shaped portion is formed at an end of the second forming rod, which can be movably attached to the outer wall of the first forming rod when the second forming rod is inserted into the product cavity, and is used to support and limit the movement of the second forming rod relative to the first forming rod, so as to form the first through hole and the second through hole which are communicated with each other.

[0010] In the die casting die with the double wedge block core pulling structure, the first forming assembly and the second forming assembly each include:

[0011] A fixed support is arranged on the movable die holder;

[0012] A moving block is movably arranged in the movable die holder, and the first forming rod or the second forming rod is connected to the moving block;

[0013] A driving member is arranged on the fixed support, and an output end of the driving member is connected to the moving block, and is used to drive the first forming rod or the second forming rod to extend into or be separated from the product cavity.

[0014] In the die casting die with the double wedge block core pulling structure, a positioning hole is arranged on the first wedge block, a blind hole coaxially arranged with the positioning hole is formed on the second wedge block, and the first forming rod penetrates through the positioning hole and is movably arranged in the blind hole.

[0015] In the die casting die with the double wedge block core pulling structure, a fixed plate is also symmetrically arranged in the movable die holder, a clamping groove is formed in the fixed plate, clamping blocks are formed on both sides of the moving block, and the clamping blocks are movably clamped in the clamping groove.

[0016] In the die casting die with the double wedge block core pulling structure, a cover plate is detachably connected to the fixed plate, and the cover plate is pressed on the moving block to limit the displacement of the moving block in the vertical direction.

[0017] In the die casting die with the double wedge block core pulling structure, a plurality of die holder ejector rods are arranged in the die holder, and the die holder ejector rods are movably extended into the product cavity to reserve the formed workpiece on the movable die holder.

[0018] In the die casting die with the double wedge block core pulling structure, a guide column is arranged in the die holder, and a guide hole is arranged in the movable die holder, and the guide column is movably arranged in the guide hole.

[0019] Compared with the prior art, the first wedge and the second wedge are designed, the stability of the first forming rod in forming the first through hole is ensured, the first forming rod is effectively prevented from tilting downward in the forming process to affect the quality of product forming, the second forming rod is used for stably forming the second through hole, the first forming rod is provided with certain supporting force, secondary machining operation is not needed, the connection between the two through holes is ensured to be accurate, the stability of the whole forming structure is enhanced, and the overall quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an explosion view between the fixed die seat and the movable die seat;

[0021] Figure 2 is an explosion view between the first forming rod, the moving block and the driving piece;

[0022] Figure 3 is a structural schematic view of the first forming rod and the second forming rod in forming a product.

[0023] In the figure, 1, fixed die seat;10, fixed die ejector rod;11, guide column;

[0024] 2, movable die seat;20, movable die cavity;21, fixed plate;210, clamping groove;211, cover plate;22, guide hole;23, cavity block;230, protruding block;

[0025] 30, first wedge;300, positioning hole;31, second wedge;310, blind hole;

[0026] 4, first forming assembly;40, first forming rod;

[0027] 5, second forming assembly;50, second forming rod;500, inner concave arc-shaped part;

[0028] 60, fixed support;61, moving block;610, clamping block;62, driving piece. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the utility model and in combination with the drawings, the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0030] For example Figures 1 to 3The utility model discloses a die -casting die with double wedge block core -pulling structure for forming first through -hole and second through -hole that are perpendicular and intercommunicate on product, the axial line of first through -hole and the axial line of second through -hole are not coplanar arrangement, and the depth of first through -hole is greater than the depth of second through -hole, wherein, the die -casting die includes: fixed mould base 1;Movable die seat 2 is movably arranged below fixed mould base 1, and after fixed mould base 1 and movable die seat 2 are adhered, product cavity is formed between fixed mould base 1 and movable die seat 2;First wedge block 30 and second wedge block 31 are spaced apart and arranged in fixed mould base 1, and first wedge block 30 and second wedge block 31 can be movably abutted on the bottom wall of product cavity when the die -casting die is closed;First forming assembly 4 is arranged on movable die seat 2, and first forming rod 40 is arranged on first forming assembly 4, first forming rod 40 can penetrate first wedge block 30 and be movably inserted into second wedge block 31 when being inserted into product cavity, so as to support first forming rod 40 in a horizontal posture;Second forming assembly 5 is arranged on movable die seat 2 and is arranged perpendicularly to first forming assembly 4, and second forming rod 50 is arranged on second forming assembly 5, and the end of second forming rod 50 forms concave arc portion 500, and concave arc portion 500 can be movably attached to the outer wall of first forming rod 40 when second forming rod 50 is inserted into product cavity, for supporting and limiting the movement of second forming rod 50 relative to first forming rod 40, so as to form first through -hole and second through -hole that are interconnected.

[0031] The utility model mainly is in order to form first through -hole and second through -hole that are perpendicular and intercommunicate on product, specifically, as shown in the figure, Figures 1 to 3 As shown, first forming assembly 4 and second forming assembly 5 in the embodiment are arranged perpendicularly on movable die seat 2, so that first forming rod 40 and second forming rod 50 can keep perpendicular intersection, and when fixed mould base 1 and movable die seat 2 are closed, first wedge block 30 and second wedge block 31 are abutted in product cavity, at this time, first forming assembly 4 can drive first forming rod 40 to pass through first wedge block 30 and further insert into second wedge block 31. Since the axial distance of the first through -hole to be formed is relatively long, the structure provides guarantee for the stability of first forming rod 40 when forming the first through -hole by the cooperation of first wedge block 30 and second wedge block 31, effectively avoids the inclination of first forming rod 40 in the forming process, and affects the quality of product forming. At the same time, second forming assembly 5 drives second forming rod 50 to enter product cavity, and the end of second forming rod 50 can be closely attached to the outer wall of first forming rod 40 by the design of concave arc portion 500 (as shown in the figure, mainly attached to the position of the lower half of first forming rod 40, similar to the palm lifting action), thereby providing a certain supporting force for first forming rod 40, ensuring the accurate connection between the two through -holes, enhancing the stability of the whole forming structure, without secondary machining operation, and improving the overall quality of the product. Figure 3 As shown, first forming assembly 4 and second forming assembly 5 in the embodiment are arranged perpendicularly on movable die seat 2, so that first forming rod 40 and second forming rod 50 can keep perpendicular intersection, and when fixed mould base 1 and movable die seat 2 are closed, first wedge block 30 and second wedge block 31 are abutted in product cavity, at this time, first forming assembly 4 can drive first forming rod 40 to pass through first wedge block 30 and further insert into second wedge block 31. Since the axial distance of the first through -hole to be formed is relatively long, the structure provides guarantee for the stability of first forming rod 40 when forming the first through -hole by the cooperation of first wedge block 30 and second wedge block 31, effectively avoids the inclination of first forming rod 40 in the forming process, and affects the quality of product forming. At the same time, second forming assembly 5 drives second forming rod 50 to enter product cavity, and the end of second forming rod 50 can be closely attached to the outer wall of first forming rod 40 by the design of concave arc portion 500 (as shown in the figure, mainly attached to the position of the lower half of first forming rod 40, similar to the palm lifting action), thereby providing a certain supporting force for first forming rod 40, ensuring the accurate connection between the two through -holes, enhancing the stability of the whole forming structure, without secondary machining operation, and improving the overall quality of the product.

[0032] Preferably, as Figure 1 shown, the embodiment is further provided with a cavity block 23 in the movable die seat 2, and a protruding block 230 is formed in the cavity block 23, which can be matched with the product cavity formed when the mold is closed to shape the required product shape. On the basis of not affecting the overall molding quality of the product, the first molding rod 40 can pass through the protruding block 230, and then pass through the first wedge block 30 and the second wedge block 31 in sequence, further ensuring the accuracy and stability of the first molding rod 40 with a longer length when molding the first through hole.

[0033] The first wedge block 30 is provided with a positioning hole 300, and the second wedge block 31 is formed with a blind hole 310 coaxially arranged with the positioning hole 300, and the first molding rod 40 passes through the positioning hole 300 and is movably arranged in the blind hole 310.

[0034] Further, as Figure 1 shown, the first wedge block 30 and the second wedge block 31 in the embodiment are the same in overall structure and material, and the only difference is that the first wedge block 30 is provided with a positioning hole 300, while the second wedge block 31 is provided with a blind hole 310. That is to say, when the first molding rod 40 passes through the positioning hole 300 on the first wedge block 30, due to the existence of the positioning hole 300, it is ensured that the first molding rod 40 can accurately travel along the predetermined path, and finally enter the blind hole 310 coaxially arranged with the positioning shaft. The design of the blind hole 310 limits the further movement of the first molding rod 40, ensuring that the first molding rod 40 accurately extends into the specified position of the product cavity, and also provides a guarantee for the stability of the first molding rod 40 in a horizontal posture.

[0035] The first molding assembly 4 and the second molding assembly 5 each include a fixed support 60 arranged on the movable die seat 2, a moving block 61 movably arranged in the movable die seat 2, the first molding rod 40 or the second molding rod 50 connected to the moving block 61, and a driving member arranged on the fixed support 60, the output end of the driving member connected to the moving block 61, for driving the first molding rod 40 or the second molding rod 50 to extend into or away from the product cavity.

[0036] As Figure 1 and Figure 2As shown, the fixed bracket 60 in this embodiment facilitates the installation and removal of the driver. Since the quality of the first and second forming rods 40 and 50 determines the quality of the final product, if the forming rods become worn or damaged, they can be removed from the movable block 61. It should be noted that the assembly and removal of the first and second forming rods 40 and 50 from the movable block 61 in this embodiment are achieved through the interlocking engagement between a T-block (not shown) and a T-slot (not shown), thereby saving time for workers. This structure uses the driver to directly control the movement of the movable block 61, allowing for very precise control of the position of the forming rods, reducing manual intervention while effectively improving the dimensional accuracy of the product.

[0037] A fixed plate 21 is symmetrically provided in the movable mold base 2 , and a snap-fit ​​groove 210 is formed in the fixed plate 21 . Snap-fit ​​blocks 610 are formed on both sides of the movable block 61 , and the snap-fit ​​blocks 610 are movably snap-fitted in the snap-fit ​​groove 210 .

[0038] Further, if Figure 2 As shown, in this embodiment, there are two fixed plates 21, and the opening directions of the two engaging grooves 210 are arranged relative to each other. The engaging block 610 on the moving block 61 is movably engaged in the engaging groove 210, so that the driving member can ensure that the moving block 61 moves along a predetermined trajectory during the driving process, greatly improving the accuracy of the first forming rod 40 and the second forming rod 50 during the forming and positioning.

[0039] Preferably, if Figure 1 As shown, this embodiment further includes a cover plate 211 detachably connected to the fixed plate 21. When the movable block 61 is movably disposed between the two fixed plates 21, the cover plate 211 can be pressed against the movable block 61, thereby limiting the vertical displacement of the movable block 61. This effectively prevents vibration or offset during the movement of the movable block 61, thereby enhancing the stability and reliability of the entire structure. It should be noted that the detachable connection referred to in this embodiment can be replaced by other fasteners such as screws.

[0040] A plurality of fixed die ejector pins 10 are further provided in the fixed die base 1 , and the fixed die ejector pins 10 are movably extended into the product cavity to reserve the formed workpiece on the movable die base 2 .

[0041] like Figure 1As shown, several fixed mold ejector rods 10 in the embodiment are movably arranged in the fixed mold base 1, and after the fixed mold base 1 and the movable mold base 2 are combined and the product is formed, the product can be uniformly pushed by the several fixed mold ejector rods 10 during the mold opening process, so that the product after mold opening is retained in the movable mold cavity 20 on the movable mold base 2, so that the subsequent movable mold ejector rod (not shown in the figure) can smoothly push out the product to complete the demolding action. It should be noted that the structure and working principle of the fixed mold ejector rod 10 are the same as those of the existing mold fixed mold ejection structure, and will not be described in detail here.

[0042] Preferably, as Figure 1 As shown, when the fixed mold base 1 and the movable mold base 2 are combined, the guide column 11 in the fixed mold base 1 is movably inserted into the guide hole 22 in the movable mold base 2, which ensures the accurate alignment of the movable mold base 2 and the fixed mold base 1, avoids product defects caused by poor alignment, and improves the forming precision of the product.

[0043] It should be noted that the driving member in the embodiment can be replaced by other driving devices such as hydraulic drive and air cylinder drive.

[0044] It should be noted that in the embodiment of the utility model, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, in the utility model, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0046] In the utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0047] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on that a person having ordinary skill in the art can realize, when the combination of technical solutions appears mutual contradiction or cannot be realized, it should be considered that the combination of such technical solutions does not exist, also not within the protection scope required by the utility model.

Claims

1. A die casting mold having a double wedge core structure for molding a first through-hole and a second through-hole which are perpendicular to each other and communicate with each other, an axis line of the first through-hole being disposed non-coplanar with an axis line of the second through-hole, and a depth of the first through-hole being greater than a depth of the second through-hole, characterized in that, The die-casting die comprises: a fixed die seat; a movable die seat movably arranged below the fixed die seat, and a product cavity being formed between the fixed die seat and the movable die seat after the fixed die seat and the movable die seat are closed; first and second wedge blocks movably arranged in the fixed die seat and abutting against a bottom wall of the product cavity when the die-casting die is closed; a first forming assembly arranged on the movable die seat, the first forming assembly being provided with a first forming rod, the first forming rod being capable of penetrating through the first wedge block and movably arranged in the second wedge block when the first forming rod is inserted into the product cavity, so as to support the first forming rod in a horizontal posture; a second forming assembly arranged on the movable die seat and arranged perpendicularly to the first forming assembly, the second forming assembly being provided with a second forming rod, an inner concave arc-shaped portion being formed at an end of the second forming rod, the inner concave arc-shaped portion being capable of abutting against an outer wall of the first forming rod when the second forming rod is inserted into the product cavity, so as to support and limit the second forming rod from moving relative to the first forming rod, so as to form the first and second through holes which are communicated with each other.

2. The die casting mold having a double wedge core-pulling structure according to claim 1, characterized in that, The first forming assembly and the second forming assembly both comprise: a fixed support arranged on the movable die seat; a moving block movably arranged in the movable die seat, the first forming rod or the second forming rod being connected to the moving block; a driving member arranged on the fixed support, an output end of the driving member being connected to the moving block, so as to drive the first forming rod or the second forming rod to be inserted into or separated from the product cavity.

3. The die casting mold having a double wedge core-pulling structure according to claim 1, wherein The first wedge block is provided with a positioning hole, the second wedge block is formed with a blind hole coaxially arranged with the positioning hole, and the first forming rod penetrates through the positioning hole and is movably arranged in the blind hole.

4. The die casting mold having a double wedge core-pulling structure according to claim 2, wherein The movable die seat is further provided with a fixed plate symmetrically arranged therein, the fixed plate is formed with a clamping groove, and both sides of the moving block are formed with clamping blocks which are movably clamped in the clamping groove.

5. The die casting mold having a double wedge core-pulling structure according to claim 4, wherein The fixed plate is detachably connected with a cover plate, the cover plate being pressed against the moving block, so as to limit the moving block from moving in a vertical direction.

6. The die casting mold having a double wedge core-pulling structure according to claim 1, wherein The fixed die seat is further provided with a plurality of fixed die ejector rods, the fixed die ejector rods being movably inserted into the product cavity, so as to reserve the formed workpiece on the movable die seat.

7. The die casting mold having a double wedge core-pulling structure according to claim 1, wherein The fixed die seat is further provided with a guide column, and the movable die seat is provided with a guide hole, the guide column being movably arranged in the guide hole.

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