Die-casting die with variable die cavity

Abstract

The utility model relates to the technical field of die-casting dies, in particular to a die cavity variable type die-casting die which comprises a workbench, a die placing table is fixedly connected to the middle of the workbench, a lower die is placed in the die placing table, and a lower pressing plate is fixedly connected to the top of the workbench. An upper die used for being matched with the lower die for die casting is fixedly connected to the middle of the bottom of the lower pressing plate, replacement mechanisms used for rapidly and conveniently replacing the lower die are arranged on the two sides of the workbench, and demolding mechanisms used for demolding a die casting in the lower die are arranged on the two sides of the die containing table. Compared with the prior art, the die cavity of the die can be changed according to actual machining requirements, multiple types of parts can be machined through one device, meanwhile, production delay and product damage caused by difficult demolding of die-cast materials are avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting moulds, in particular to a die casting mould with a variable mould cavity. Background Art

[0002] Die-casting molds are tools for casting metal parts, mainly used to complete the die-casting process on special die-casting forging machines. The basic process of die-casting is: the molten metal is first cast and filled into the mold cavity at a low speed or high speed. The mold has a movable cavity surface, which is pressurized and forged with the cooling process of the molten metal, which not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state, thereby significantly improving the comprehensive mechanical properties of the blank. The main application areas of die-casting molds include the automotive industry, electronic and electrical industry, machinery manufacturing industry, aerospace industry, railway transportation industry and medical equipment industry, etc. These industries usually require high-precision and high-quality metal parts.

[0003] The Chinese patent discloses: a die-casting mold, patent application number: 202320987970.X, which "includes an outer bracket, a die-casting lower mold constraint sleeve, a die-casting lower mold connecting slide rod, a die-casting lower mold, a die-casting upper mold constraint sleeve, a die-casting upper mold connecting slide rod, a die-casting upper mold, a connecting sleeve, an articulated frame, an articulated block, an articulated shaft, an axle frame, a roller shaft, a contact roller and a buffer spring, and the middle part of the inner bottom end of the outer bracket is connected to the bottom end of the die-casting lower mold constraint sleeve."

[0004] Although the mold is turned over by the hinge block through the hinge shaft under the constraint of the hinge frame until the die-casting lower mold is supported and fixed by the top of the die-casting lower mold constraint sleeve, and the mold is restrained and buffered by the flipping activity of the lower mold to avoid direct contact and collision damage, the mold cavity is unchangeable. Therefore, a die-casting mold can only process one type of plate, with a small actual processing range, poor flexibility, and a narrow application field. If other types of parts need to be processed, other equipment is required, which is costly, time-consuming, labor-intensive, inefficient, and inconvenient for users. At the same time, the equipment cannot demould the parts in the mold. Due to the influence of various factors such as mold temperature and mold design, the parts that have just been finalized may fit tightly with the mold or produce excessive friction, making it difficult for the product to be demoulded smoothly. This will not only affect production efficiency, but may also cause product damage or scrapping, bring economic losses to the company, and be inconvenient to use. Utility Model Content

[0005] In view of this, the purpose of the utility model is to propose a die-casting mold with a variable cavity to solve the problem that a die-casting mold can only process one type of plate, has a small actual processing range, poor flexibility, and cannot demold the parts in the mold.

[0006] Based on the above-mentioned purpose, the utility model provides a die-casting mold with a variable mold cavity, including a workbench, a mold placing table is fixedly connected to the middle part of the workbench, a lower mold is placed inside the mold placing table, a lower pressure plate is fixedly connected to the top of the workbench, an upper mold for die-casting in cooperation with the lower mold is fixedly connected to the bottom middle part of the lower pressure plate, replacement mechanisms for quickly and conveniently replacing the lower mold are provided on both sides of the workbench, and demolding mechanisms for demolding the die-casting in the lower mold are provided on both sides of the mold placing table.

[0007] Preferably, the replacement mechanism includes mounting grooves provided on both sides of the top of the mold placing table, mounting plates are fixedly connected to both sides of the lower mold, the mounting plates are adapted to the interior of the mounting grooves, the side walls on both sides of the mold placing table are rotatably connected with rotating plates, the rotating plate is rotatably connected to a side close to the mold placing table with two elastic connecting pieces, the tops of the two elastic connecting pieces are rotatably connected to a limiting block together, grooves are provided on both side walls of the mold placing table, the bottoms of the two limiting blocks are rotatably connected to the grooves respectively, the bottom of the far limiting block away from the elastic connecting piece is fixedly connected to an extrusion spring, the extrusion spring One end of the spring is fixedly connected in the groove, and the bottom of one end of the two limit blocks is respectively in contact with the top of the mounting plate; the mold placement platform is fixedly connected to a support frame on the side away from the elastic connecting piece; the top of the support frame is rotatably connected to an extrusion block, and one end of the extrusion block is in contact with one end of the top of the limit block for pressing down; two first guide rings are fixedly connected to the outer wall of one side of the mold placement platform, a second guide ring is fixedly connected between one ends of the support frame, and a pull rope is fixedly connected to the side wall of the rotating plate, and one end of the pull rope passes through the first guide ring and the second guide ring and is fixedly connected to the side wall of one end of the extrusion block.

[0008] Preferably, the demolding mechanism includes support rods fixedly connected to both sides of the upper mold, the support rods are rotatably connected inside with relatively arranged demolding rods, the demolding rods are fixedly connected with a return spring between one side of the demolding rods close to the inner wall of the support rods, the mold placing table is slidably connected with a demolding plate, both ends of the demolding plate pass through the outer wall of the sliding mold placing table and are fixedly connected with a demolding module, the tops of both ends of the demolding plate are fixedly connected with sliding rods, one end of the sliding rod passes through the top of the sliding mold placing table, the outer wall of the sliding rod is sleeved with a compression spring, one end of the compression spring is fixedly connected to the top of the demolding plate, the other end of the compression spring is fixedly connected to the inside of the mold placing table, the middle part of the demolding plate is fixedly connected with a ejection plate, and one end of the ejection plate passes through the top of the sliding lower mold.

[0009] Preferably, a handle is fixedly connected to the top of the rotating plate, and an anti-slip groove is provided on the outer wall of the handle.

[0010] Preferably, one end of the extrusion block close to the limiting block is arc-shaped.

[0011] Preferably, the stripping module is elliptical in shape.

[0012] Preferably, a connection port is fixedly connected to the top of the lower pressing plate.

[0013] Beneficial effects of the utility model:

[0014] 1. This kind of cavity variable die-casting mold, when it is necessary to die-cast parts of other shapes and sizes, by pulling the handle toward one end, the handle then drives the rotating plate to rotate, when the rotating plate rotates, it drives the elastic connecting piece to rotate, when the elastic connecting piece rotates, it pulls the limit block at one end of the elastic connecting piece, at this time the limit block rotates in the groove, and the other end of the limit block leaves the top of the mounting plate, and at the same time the rotating plate pulls the pull rope, and then the pull rope pulls one end of the extrusion block, at this time the extrusion block rotates in the direction of the limit block and squeezes the end of the limit block close to the extrusion block, and then the limit block rotates in the groove and squeezes the extrusion spring at the bottom, and then the bottom of one end of the limit blocks on both sides of the mold placement table releases the limit on the mounting plate, and then the staff can take out the lower mold and replace the required mold, which is easy to replace and install, so that the mold cavity of the mold can be changed according to actual processing needs, so that one device can process various types of parts, reduce costs, have a large processing range, save time and effort, improve production efficiency and flexibility, and facilitate user use.

[0015] 2. This kind of cavity variable die-casting mold, when the demoulding mechanism is in use, the upper mold is driven to move downward by the external telescopic device, so that the upper mold and the lower mold are die-casting. At this time, the demoulding rod is at the bottom of the demoulding module. After the die-casting is completed, the upper mold is driven upward by the external telescopic device and the support rod is driven to move. Then the support rod drives the demoulding rod to move. At this time, one end of the demoulding rod will hook the demoulding module, so that the demoulding module drives the demoulding plate to slide inside the mold placement table. When the demoulding plate slides, it will drive the ejector plate to move upward and lift up the die-casting material inside the lower mold, thereby completing the demoulding operation, avoiding production delays and product damage caused by demoulding difficulties after die-casting, improving production efficiency, avoiding economic losses to the enterprise, and making it more convenient to take and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the replacement mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the elastic connecting piece and the limiting block of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the extrusion block of the utility model;

[0021] Figure 5 It is a schematic diagram of the demoulding mechanism structure of the utility model.

[0022] The markings in the figure are:

[0023] 1. Workbench; 2. Mold placement table; 3. Lower mold; 4. Lower pressure plate; 5. Upper mold; 6. Mounting groove; 7. Mounting plate; 8. Rotating plate; 9. Elastic connecting piece; 10. Limit block; 11. Groove; 12. Extrusion spring; 13. Support frame; 14. Extrusion block; 15. First guide ring; 16. Second guide ring; 17. Pull rope; 18. Support rod; 19. Demolding rod; 20. Reset spring; 21. Demolding plate; 22. Demolding module; 23. Sliding rod; 24. Compression spring; 25. Ejector plate; 26. Handle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 5As shown, a cavity-variable die-casting mold comprises a workbench 1, a mold placement table 2 is fixedly connected to the middle portion of the workbench 1, a lower mold 3 is placed inside the mold placement table 2, a lower pressure plate 4 is fixedly connected to the top of the workbench 1, a connecting port is fixedly connected to the top of the lower pressure plate 4, an upper mold 5 for die-casting in cooperation with the lower mold 3 is fixedly connected to the middle portion of the bottom of the lower pressure plate 4, replacement mechanisms for quickly and conveniently replacing the lower mold 3 are provided on both sides of the workbench 1, and demolding mechanisms for demolding the die-casting in the lower mold 3 are provided on both sides of the mold placement table 2.

[0027] For further information, see Attachment Figures 2 to 4 As shown, the replacement mechanism includes mounting grooves 6 opened on both sides of the top of the mold placement platform 2, mounting plates 7 are fixedly connected on both sides of the lower mold 3, and the mounting plates 7 are adapted to the inside of the mounting grooves 6. The side walls of the mold placement platform 2 are rotatably connected with rotating plates 8, and the rotating plates 8 are rotatably connected to the side close to the mold placement platform 2. The tops of the two elastic connecting plates 9 are rotatably connected to the limiting blocks 10 together, and the side walls of the mold placement platform 2 are provided with grooves 11. The bottoms of the two limiting blocks 10 are rotatably connected in the grooves 11 respectively, and the bottom of the limiting block 10 away from the elastic connecting plate 9 is fixedly connected with an extrusion spring 12, and one end of the extrusion spring 12 is fixedly connected in the groove 11. The bottom of one end of the two limit blocks 10 are respectively in contact with the top of the mounting plate 7, and the side of the mold placement table 2 away from the elastic connecting piece 9 is fixedly connected to a support frame 13, and the top of the support frame 13 is rotatably connected to an extrusion block 14, and the end of the extrusion block 14 close to the limit block 10 is arc-shaped, and one end of the extrusion block 14 contacts the top end of the limit block 10 to press down, and one side outer wall of the mold placement table 2 is fixedly connected to two first guide rings 15, and one end of the support frame 13 is fixedly connected to the second guide ring 16, and the side wall of the rotating plate 8 is fixedly connected to a pull rope 17, and one end of the pull rope 17 passes through the first guide ring 15 and the second guide ring 16 and is fixedly connected to the side wall of one end of the extrusion block 14;

[0028] When it is necessary to die-cast parts of other shapes and sizes, the handle 26 is pulled toward one end, and then the handle 26 drives the rotating plate 8 to rotate. When the rotating plate 8 rotates, it drives the elastic connecting piece 9 to rotate. When the elastic connecting piece 9 rotates, it pulls the limit block 10 at one end of the elastic connecting piece 9. At this time, the limit block 10 rotates in the groove 11, and the other end of the limit block 10 leaves the top of the mounting plate 7. At the same time, the rotating plate 8 pulls the pull rope 17, and then the pull rope 17 pulls one end of the extrusion block 14. At this time, the extrusion block 14 rotates in the direction of the limit block 10 and extrudes The limit block 10 is close to one end of the extrusion block 14, and then the limit block 10 will rotate in the groove 11 and squeeze the extrusion spring 12 at the bottom, and then the bottom of one end of the limit block 10 on both sides of the mold placement table 2 releases the limit on the mounting plate 7, and then the staff can take out the lower mold 3 and replace the required mold. The replacement and installation are convenient, so that the mold cavity can be changed according to the actual processing needs, so that one device can process various types of parts, reduce costs, save time and effort, improve production efficiency and flexibility, and facilitate user use.

[0029] For further information, see Attachment Figure 5 As shown, the demoulding mechanism includes a support rod 18 fixedly connected to both sides of the upper mold 5, the support rod 18 is internally rotatably connected with a demoulding rod 19 arranged oppositely, the demoulding rod 19 is fixedly connected with a reset spring 20 between one side of the inner wall of the support rod 18, the mold placement table 2 is internally slidably connected with a demoulding plate 21, both ends of the demoulding plate 21 penetrate the outer wall of the sliding mold placement table 2 and are fixedly connected with a demoulding module 22, the shape of the demoulding module 22 is elliptical, the top of both ends of the demoulding plate 21 is fixedly connected with a slide bar 23, one end of the slide bar 23 penetrates the top of the sliding mold placement table 2, the outer wall of the slide bar 23 is sleeved with a compression spring 24, one end of the compression spring 24 is fixedly connected to the top of the demoulding plate 21, and the other end of the compression spring 24 is fixedly connected to the inside of the mold placement table 2, the middle part of the demoulding plate 21 is fixedly connected with a top plate 25, and one end of the top plate 25 penetrates the top of the sliding lower mold 3;

[0030] When the demoulding mechanism is in use, the upper mold 5 is driven downward by the external telescopic device, so that the upper mold 5 and the lower mold 3 are die-casting. At this time, the demoulding rod 19 is at the bottom of the demoulding module 22. After the die-casting is completed, the upper mold 5 is driven upward by the external telescopic device and the support rod 18 is driven to move. Then the support rod 18 drives the demoulding rod 19 to move. At this time, one end of the demoulding rod 19 will hook the demoulding module 22, so that the demoulding module 22 drives the demoulding plate 21 to slide inside the mold placement table 2. When the demoulding plate 21 slides, it will drive the ejector plate 25 to move upward and lift up the die-casting material inside the lower mold 3, thereby completing the demoulding operation, avoiding production delays and product damage caused by demoulding difficulties after die-casting, and making it more convenient to take and easy to use.

[0031] For further information, see Attachment Figure 3 As shown, a handle 26 is fixedly connected to the top of the rotating plate 8, and an anti-skid groove is provided on the outer wall of the handle 26. The anti-skid groove increases friction and facilitates better pulling of the handle 26.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0033] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A die-casting mold with a variable cavity, comprising a workbench (1), a mold placement table (2) is fixedly connected to the middle part of the workbench (1), a lower mold (3) is placed inside the mold placement table (2), a lower pressing plate (4) is fixedly connected to the top of the workbench (1), and an upper mold (5) for cooperating with the lower mold (3) for die-casting is fixedly connected to the middle part of the bottom of the lower pressing plate (4), characterized in that: Both sides of the workbench (1) are provided with replacement mechanisms for quickly and conveniently replacing the lower mold (3), and both sides of the mold placement platform (2) are provided with demoulding mechanisms for demoulding the die-casting inside the lower mold (3).

2. The variable cavity die-casting mold according to claim 1, characterized in that: The replacement mechanism comprises mounting grooves (6) provided on both sides of the top of the mold placement platform (2), mounting plates (7) are fixedly connected on both sides of the lower mold (3), the mounting plates (7) and the interior of the mounting grooves (6) are adapted to each other, the side walls of the mold placement platform (2) are rotatably connected with rotating plates (8), the rotating plates (8) are rotatably connected with two elastic connecting plates (9) on the side close to the mold placement platform (2), the tops of the two elastic connecting plates (9) are rotatably connected with a limiting block (10) together, the side walls of the mold placement platform (2) are provided with grooves (11), the bottoms of the two limiting blocks (10) are rotatably connected in the grooves (11) respectively, the bottom of the limiting block (10) away from the elastic connecting plate (9) is fixedly connected with an extrusion spring (12), one end of the extrusion spring (12) is fixedly connected to the mold placement platform (2) and the bottom of the limiting block (10) is fixedly connected with an extrusion spring (12). The mold placing platform (2) is fixedly connected in the groove (11), and the bottom of one end of the two limit blocks (10) is respectively in contact with the top of the mounting plate (7); the mold placing platform (2) is fixedly connected to a support frame (13) on the side away from the elastic connecting piece (9); the top of the support frame (13) is rotatably connected to an extrusion block (14); one end of the extrusion block (14) is in contact with one end of the top of the limit block (10) to press down; two first guide rings (15) are fixedly connected to the outer wall of one side of the mold placing platform (2); a second guide ring (16) is fixedly connected between one end of the support frame (13); a pull rope (17) is fixedly connected to the side wall of the rotating plate (8); one end of the pull rope (17) passes through the first guide ring (15) and the second guide ring (16) and is fixedly connected to the side wall of one end of the extrusion block (14).

3. The variable cavity die-casting mold according to claim 1, characterized in that: The demoulding mechanism comprises a support rod (18) fixedly connected to both sides of the upper mold (5), the support rod (18) is internally rotatably connected to a demoulding rod (19) arranged oppositely, a return spring (20) is fixedly connected between the demoulding rod (19) and the inner wall of the support rod (18), the mold placement platform (2) is internally slidably connected to a demoulding plate (21), both ends of the demoulding plate (21) penetrate the outer wall of the sliding mold placement platform (2) and are fixedly connected to a demoulding module (22), and both ends of the demoulding plate (21) are A slide rod (23) is fixedly connected to the top, one end of which passes through the top of the sliding mold placement platform (2), and a compression spring (24) is sleeved on the outer wall of the slide rod (23), one end of which is fixedly connected to the top of the stripping plate (21), and the other end of which is fixedly connected to the inside of the mold placement platform (2). A top plate (25) is fixedly connected to the middle part of the stripping plate (21), and one end of which passes through the top of the sliding lower mold (3).

4. The variable cavity die-casting mold according to claim 2, characterized in that: A handle (26) is fixedly connected to the top of the rotating plate (8), and an anti-slip groove is provided on the outer wall of the handle (26).

5. The variable cavity die-casting mold according to claim 2, characterized in that: One end of the extrusion block (14) close to the limiting block (10) is in an arc shape.

6. The variable cavity die-casting mold according to claim 3, characterized in that: The stripping module (22) is elliptical in shape.

7. The variable cavity die-casting mold according to claim 1, characterized in that: The top of the lower pressing plate (4) is fixedly connected with a connecting port.

Images