Multi-sided mold opening and closing mechanism

Abstract

The present invention relates to a multi-sided mold opening and closing mechanism, comprising a bottom mold, a bottom mold fixed to the bottom mold, a plurality of side molds and an upper mold, a side mold locking ring is fixed to the top of the bottom mold, an upper mold is fixed to the top of the upper mold, a connecting rod 1 is fixed to the top of each side mold, a strip hole is provided on the upper mold for the upper end of the connecting rod 1 to pass through, a plurality of guide blocks are fixed on the upper mold, the upper end of the connecting rod 1 is hinged to the connecting rod 3 through the connecting rod 2, the other end of the connecting rod 3 is hinged to the opening and closing control plate, the two ends of the connecting rod are rotatably mounted with rolling bearings, and the side walls of the guide blocks are provided with guide grooves. The present invention greatly saves mold costs. The number of side molds can be adjusted according to the product structure without being restricted by the machine cylinder, the structure is light and the size is more uniform, the temperature field of the side molds is more uniform, the cooling arrangement of the side molds is relatively easy, and it is more helpful to improve the casting flash between the side molds. Finally, this structure can greatly reduce the mold opening height of the mold to save the mold opening and closing time.

Description

Technical Field

[0001] The invention relates to a polygonal mould opening and closing mechanism, belonging to the technical field of mechanical moulds. Background Art

[0002] At present, the side molds of wheel hub molds on the market are mostly two-open and four-open mold structures. The side molds are connected to the oil cylinder of the casting equipment for opening and closing to achieve the purpose of demoulding. However, this structure has many disadvantages, which are summarized as follows:

[0003] 1. The number of side molds is limited by the number of cylinders on the equipment, and the side molds and side mold cylinders need to be manually connected. During the production process, the cylinders need to be opened and closed continuously, which increases energy consumption.

[0004] 2. Since the side mold needs to be connected to the side mold cylinder and the opening and closing structure, the side mold structure is complex and bulky. In addition, the complexity of the side mold opening and closing mechanism leads to uneven temperature field of the side mold casting mold, resulting in high center temperature and low surrounding temperature, which ultimately affects product performance and even causes scrapping.

[0005] 3. Due to the limitation of the side mold structure, it is relatively difficult to arrange the side mold cooling. For products whose heat junction is just located on the side mold parting surface, it is difficult to design good cooling, which leads to casting difficulties.

[0006] 4. Due to the imbalance of the temperature field of the side mold, the mold is deformed, and it is easy to have flash on the casting. And due to the diversity of product structures, it is difficult to reserve a reasonable matching gap. As a result, the cast products often have flash on the matching parts of the side molds, which requires additional removal processes and consumes manpower and material resources.

[0007] 5. During the up and down opening and closing process of the equipment, the equipment must rise to above the height of the side mold before it can transfer to the receiving tray and put down the product. This directly affects the opening and closing height of the equipment and ultimately affects the overall opening and closing time of the mold casting process.

[0008] Since the current mold opening and closing structure has the above-mentioned many defects, a completely new structure is needed. Summary of the invention

[0009] The present invention provides a multilateral mold opening and closing mechanism to solve the problems that the number of mold side molds is limited by the number of oil cylinders, the use of oil cylinders to control the opening and closing of the side molds causes a complex structure, resulting in an uneven temperature field of the side molds, difficult side mold cooling arrangement, and easy deformation and flash, and the increase in the opening and closing height affects the opening and closing time.

[0010] The present invention relates to a multilateral mold opening and closing mechanism, including a bottom mold, a bottom mold fixed to the bottom mold, a plurality of side molds and an upper mold. A side mold locking ring is fixed to the top of the bottom mold. The side mold locking ring limits and locks the lower part of the side mold after mold closing between the outer side of the bottom film and the side mold locking ring. An upper mold is fixed to the top of the upper mold. A connecting rod 1 is fixed to the top of each side mold. The upper mold is provided with a through hole for vertical and horizontal movement of the connecting rod 1. The upper end of the connecting rod 1 is movably connected to an opening and closing control panel through a connecting rod mechanism. A rolling bearing is rotatably installed on the connecting rod 1. A guide groove is provided on the upper mold. The mold gate sleeve is fixed on the bottom mold, and the diverter cone is fixed on the upper mold. After the mold is closed, the side mold locking ring can lock the bottom of the side mold to realize the mechanical locking function, eliminating the structure in the current mold that uses the oil pressure of the side mold cylinder for continuous locking.

[0011] Preferably, the through hole is a strip hole, and the length direction of the strip hole is along the opening and closing direction of the side mold, so that the connecting rod 1 can move up and down and along the opening and closing direction in the strip hole.

[0012] Preferably, a guide block fixed on the upper template is provided on one side of each through hole, and a guide groove is provided on the side wall of the guide block, which is convenient for machining the guide groove and installing the rolling bearing.

[0013] Preferably, the rolling bearing first rolls downward and then rolls outward along the guide groove as the opening and closing control plate is pressed down. The guide groove can be used to control the side mold to move downward first, separate from the upper mold, and then move outward to separate from the side mold when the mold is opened.

[0014] Preferably, the guide groove is L-shaped, and an arc-shaped transition groove is provided between the vertical section and the horizontal section of the guide groove, so that the guide groove can roll outward more smoothly when turning from vertical to horizontal.

[0015] Preferably, the connecting rod mechanism includes connecting rod three and connecting rod two which are movably connected to the opening and closing control plate. The other end of connecting rod three is hinged to connecting rod one through connecting rod two. The rolling bearing is fixedly installed on the end of connecting rod two. The connection structure is simple and practical, and the rolling bearing is easy to install.

[0016] Preferably, a hinge base is fixed to the bottom of the opening and closing control plate, and the hinge base is hinged to the connecting rod three and the connecting rod four through a connecting pin, so that the mold opening and closing process is smoother.

[0017] Preferably, two connecting rods 1 are fixed on each side mold, connecting rod 4 is provided above connecting rod 3, the other end of connecting rod 4 is hinged to connecting rod 1 through connecting rod 5, connecting rod 3 is hinged to connecting rod 1 through connecting rod 2, which can control the opening and closing of the mold, and the other end of connecting rod 4 is hinged to connecting rod 1 through connecting rod 5, which can prevent the mold from shaking during the mold opening process, which not only ensures the smooth opening and closing of the side mold, but also effectively prevents the shaking of the side mold during the opening and closing movement, making the movement more stable and reliable.

[0018] Preferably, the lower end of the connecting rod 1 is fixed and locked on the side template by a nut, and can be easily disassembled.

[0019] Preferably, both ends of the second connecting rod are provided with C-shaped buckles, which are convenient for limiting and fixing the connecting rod, and the rolling bearing can be conveniently installed and fixed through the C-shaped buckles.

[0020] Compared with the prior art, the present invention has the following beneficial effects.

[0021] First of all, this structure eliminates a large number of mold parts such as the side mold back plate, triangle block, guide slide, upper mold ejector, etc., greatly saving mold costs. Secondly, this opening and closing mechanism completely subverts the traditional side mold structure. It can adjust the number of side molds according to the product structure without being restricted by the machine cylinder, and does not require manual connection. In addition, the new side mold structure is lightweight and has more uniform dimensions, the side mold temperature field is more uniform, and the side mold cooling arrangement is relatively easy. At the same time, it is more helpful to improve the casting flash between the side molds. Finally, this structure can greatly reduce the mold opening height to save the mold opening and closing time. After the mold is closed, the side mold locking ring can lock the bottom of the side mold to achieve a mechanical locking function, eliminating the current structure in the mold that has been using the oil pressure of the side mold cylinder to continuously lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the demoulding process one;

[0025] Figure 4 It is a structural schematic diagram of the demoulding process 2;

[0026] Figure 5 It is a structural schematic diagram of the demoulding process three;

[0027] Figure 6 It is a structural schematic diagram of demoulding process four;

[0028] Figure 7 It is a structural schematic diagram of the demoulding process five;

[0029] Figure 8 It is a schematic diagram of the structure after complete demoulding;

[0030] Fig. 9 It is a schematic diagram of the structure of 5 side molds;

[0031] In the figure: 1, bottom template, 2, bottom mold, 3, side mold locking ring, 4, casting, 5, upper mold, 6, side mold, 7, nut, 8, connecting rod one, 9, strip hole, 10, upper template, 11, guide groove, 12, rolling bearing, 13, guide block, 14, connecting rod two, 15, C-shaped buckle ring, 16, connecting rod three, 17, connecting pin, 18, hinge base, 19, opening and closing control panel, 20, connecting rod four, 21, connecting rod five. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0033] like Figure 1 and 2 The mold shown includes a bottom mold 1, a bottom mold 2 fixed to the bottom mold 1, a plurality of side molds 6 and an upper mold 5, the number of side molds includes 2 and more than 2, a side mold locking ring 3 is fixed to the top of the bottom mold 1, an upper mold 10 is fixed to the top of the upper mold 5, a connecting rod 8 is fixed to the top of each side mold 6, a through hole for the vertical and horizontal movement of the connecting rod 8 is provided on the upper mold 10, the upper end of the connecting rod 8 is movably connected to an opening and closing control board 19 through a connecting rod mechanism, a rolling bearing 12 is rotatably installed on the connecting rod 8, and a guide groove 11 is provided on the upper mold 10. The mold gate sleeve is fixed on the bottom mold, and the diverter cone is fixed on the upper mold.

[0034] Only by moving the mold opening and closing control panel, the rolling bearing on the connecting rod 1 is driven to move along the guide groove to complete the entire process of demoulding the casting and opening and closing the side mold. It is simpler and more convenient.

[0035] The through hole is a strip hole 9 , and the length direction of the strip hole 9 is along the opening and closing direction of the side mold 6 .

[0036] A guide block 13 fixed on the upper template 10 is provided on one side of each through hole, and the guide groove 11 is arranged on the side wall of the guide block 13 .

[0037] As the opening and closing control plate 19 is pressed down, the rolling bearing 12 first rolls downward along the guide groove 11 and then rolls outward.

[0038] The guide groove 11 is L-shaped, and an arc-shaped transition groove is provided between the vertical section and the horizontal section of the guide groove 11 .

[0039] The connecting rod mechanism includes a connecting rod three 16 and a connecting rod two 14 movably connected to the opening and closing control plate 19 . The other end of the connecting rod three 16 is hinged to the connecting rod one 8 through the connecting rod two 14 , and the rolling bearing 12 is fixedly installed on the end of the connecting rod two 14 .

[0040] A hinge base 18 is fixed to the bottom of the opening and closing control panel 19 , and the hinge base 18 is connected to the connecting rod 3 16 through a connecting pin 17 .

[0041] Two connecting rods 8 are fixed on each side mold 6, and a connecting rod 4 21 is arranged above the connecting rod 3 16, and the other end of the connecting rod 4 20 is hinged to the connecting rod 8 through the connecting rod 5 21.

[0042] The lower end of the connecting rod 8 is fixed and locked on the side mold 6 plate through the nut 7

[0043] Both ends of the connecting rod 14 are provided with C-shaped buckle rings 15 .

[0044] The side mold does not need to be equipped with a complicated oil cylinder and a structure that drives the side mold to open, close and lock. The side mold structure is simpler and lighter. In addition, there is no need to manually connect the side mold and the side mold oil cylinder, which reduces labor. During the production process, the oil cylinder does not need to be opened and closed continuously, which reduces energy consumption. Due to the simple structure of the side mold, the arrangement of the side mold cooling is relatively easy. For products whose heat junction is just located on the side mold parting surface, good cooling can be designed, making casting easier.

[0045] The bottom template 1 is fixed on the lower platen of the casting machine, and the upper template 10 is fixed on the upper platen of the casting machine. The rolling bearing 12 is fixed by a C-shaped buckle 14; the mold opening and closing control panel is connected to the mold lowering cylinder. During the mold opening and closing process, the rolling bearing 12 moves in the guide groove of the motion guide block.

[0046] The opening and closing movement process of the mold is as follows: For the convenience of description, we call the bottom mold plate 1, the bottom mold 2, and the side mold locking ring 3 the lower mold assembly, the upper mold 5, the upper mold plate 10, and the guide block 13 are collectively called the upper mold assembly, and the side mold 6, the nut 9, the connecting rod 1 8, the rolling bearing 12, the connecting rod 2 15, the C-shaped retaining ring 14, the connecting rod 3 16, the connecting pin 17, and the hinge base 18 are collectively called the side mold assembly.

[0047] The upper platen of the mold moves upward and drives the upper mold assembly, the side mold assembly and the casting 4 and the casting 5 fixed on the upper platen to separate from the lower mold. Figure 3 shown.

[0048] The casting machine applies downward force to the oil cylinder to drive the opening and closing control plate 19 of the mold to move downward. At the same time, the opening and closing movement plate 19 drives the side mold assembly and the casting 4 to move downward. At this time, the casting is separated from the upper mold. Figure 4 and Figure 5 shown.

[0049] The opening and closing control plate continues to move downward, and the rolling bearing connected to the side mold assembly begins to move along the circular arc transition groove of the motion guide block, and drives the side mold assembly to move along this arc. Figure 6 shown.

[0050] The opening and closing control panel continues to move downward, and the rolling bearing begins to roll outward, driving the side mold assembly to move outward until the end of the guide block groove. Then the casting completely leaves the side mold and falls down into the receiving tray, completing the entire demoulding process. Figure 7 and Figure 8 shown.

[0051] The equipment lowers the oil cylinder to move upward, and the rolling bearing drives the side mold assembly to move in the opposite direction of the mold opening process until the side mold is closed. Then the upper machine plate drives the upper mold assembly and the side mold assembly to move downward together until the mold is completely closed. The whole movement process is over.

[0052] The entire process of demoulding the casting and opening and closing the side mold can be completed only through the mold opening and closing control panel. It is simpler and more convenient.

[0053] This patented structure completely adjusts the number of side molds according to product requirements without being limited by the side mold cylinder of the equipment. In this case, the structure is designed with five side molds based on the product having five spokes. Fig. 9 shown.

[0054] In summary, the present invention eliminates a large number of mold parts such as the side mold back plate, triangle block, guide slide, upper mold push rod, etc., greatly saving mold costs. Secondly, the opening and closing mechanism completely subverts the traditional side mold structure. The number of side molds can be adjusted according to the product structure without being restricted by the machine cylinder, and no manual connection is required. In addition, the new side mold structure is lightweight and has more uniform dimensions, the side mold temperature field is more uniform, and the side mold cooling arrangement is relatively easy. At the same time, it is more helpful to improve the casting flash between the side molds. Finally, this structure can greatly reduce the mold opening height to save the mold opening and closing time. After the mold is closed, the side mold locking ring can lock the bottom of the side mold to realize the mechanical locking function, eliminating the current structure in the mold that has been using the oil pressure of the side mold cylinder for continuous locking.

[0055] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A multi-sided mold opening and closing mechanism, comprising a bottom mold (1), a bottom mold (2) fixed to the bottom mold (1), a plurality of side molds (6) and an upper mold (5), characterized in that: A side mold locking ring (3) is fixed to the top of the bottom mold (1), an upper mold (10) is fixed to the top of the upper mold (5), a connecting rod (8) is fixed to the top of each side mold (6), a through hole for vertical and horizontal movement of the connecting rod (8) is provided on the upper mold (10), an opening and closing control plate (19) is movably connected to the upper end of the connecting rod (8) through a connecting rod mechanism, a rolling bearing (12) is rotatably installed on the connecting rod (8), and a guide groove (11) is provided on the upper mold (10); As the opening and closing control plate (19) is pressed downward, the rolling bearing (12) first rolls downward and then rolls outward along the guide groove (11); the guide groove (11) is L-shaped, and an arc-shaped transition groove is provided between the vertical section and the horizontal section of the guide groove (11); The connecting rod mechanism comprises a connecting rod three (16) and a connecting rod two (14) movably connected to the opening and closing control plate (19); the other end of the connecting rod three (16) is hinged to the connecting rod one (8) through the connecting rod two (14); a rolling bearing (12) is fixedly mounted on the end of the connecting rod two (14); a hinge base (18) is fixed to the bottom of the opening and closing control plate (19); the hinge base (18) is hinged to the connecting rod three (16) through a connecting pin (17); two connecting rods one (8) are fixed to each side mold (6); a connecting rod four (20) is provided above the connecting rod three (16); the other end of the connecting rod four (20) is hinged to the connecting rod one (8) through a connecting rod five (21).

2. The multi-sided mold opening and closing mechanism according to claim 1, characterized in that: The through hole is a strip-shaped hole (9), and the length direction of the strip-shaped hole (9) is along the opening and closing direction of the side mold (6).

3. The multilateral mold opening and closing mechanism according to claim 1 or 2, characterized in that: A guide block (13) fixed to the upper template (10) is provided on one side of each through hole, and a guide groove (11) is provided on a side wall of the guide block (13).

4. The multi-sided mold opening and closing mechanism according to claim 1, characterized in that: The lower end of the connecting rod 1 (8) is fixed and locked on the side mold (6) plate through a nut (7).

5. The multi-sided mold opening and closing mechanism according to claim 1, characterized in that: Both ends of the second connecting rod (14) are provided with C-shaped buckles (15).

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