Die with ejector rod convenient to replace

Abstract

The utility model relates to a mould convenient to replace mandril, including lower mould subassembly and upper mould subassembly, lower mould subassembly includes lower mould plate, connecting plate and lower mould base, lower mould plate is equipped with first push rod hole, be equipped with locating piece, spring and push rod in the first push rod hole, locating piece with first push rod hole threaded connection, connecting plate is equipped with second push rod hole, the second push rod hole is equipped with second push rod. The lower die base is provided with an ejection hole and a forming cavity, the push rod extends into the second push rod hole from the first push rod hole, and an ejection rod is fixed to the upper end of the push rod and extends into the forming cavity. A groove is formed in the lower end of the positioning block, a connecting shaft is fixed in the groove and sleeved with a connecting rod, a containing groove is formed in the lower surface of the lower die plate, a first magnet is fixed to the connecting rod, a second magnet is fixed in the containing groove, and when the connecting rod rotates to enter the containing groove, the first magnet is connected with the second magnet in a magnetic attraction mode. According to the utility model, the ejector rod and the spring can be conveniently and quickly assembled and disassembled, and the die maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of moulds, especially the mould of the top rod of easy replacement. BACKGROUND

[0002] The lower die assembly of stamping die will be provided with ejector rod, and the ejector rod is fixedly arranged on the sliding plate that can slide up and down. After stamping is completed, the sliding plate is pushed up and down, so as to drive the ejector rod to slide up and down. The workpiece is pushed out from the forming cavity by the ejector rod. When the ejector rod needs to be replaced, the entire lower die assembly needs to be disassembled, which is time-consuming and laborious, and the efficiency is low. SUMMARY

[0003] The utility model aims at providing a kind of mould of the top rod of easy replacement with high dismounting efficiency of ejector rod.

[0004] The technical scheme for achieving the utility model is as follows:

[0005] The mould of the top rod of easy replacement, comprising lower die assembly and upper die assembly, the lower die assembly includes lower die plate, connecting plate fixedly connected with the lower die plate and lower die seat fixedly connected with the connecting plate, the lower die plate is provided with first push rod hole, the first push rod hole is provided with positioning block, spring and push rod, the positioning block is threadedly connected with the first push rod hole, one end of the spring is connected with the positioning block, and the other end is connected with the push rod, the connecting plate is provided with second push rod hole, the lower die seat is provided with material pushing hole communicated with the second push rod hole and forming cavity communicated with the material pushing hole, the push rod extends into the second push rod hole from the first push rod hole, the upper end of the push rod is fixed with ejector rod, and the ejector rod extends through the material pushing hole and extends into the forming cavity upward.

[0006] The lower end of the positioning block is provided with recess, the recess is fixed with connecting shaft, the connecting shaft is rotatably connected with connecting rod, the lower surface of the lower die plate is provided with accommodating groove corresponding to the recess, the end of the connecting rod away from the connecting shaft is fixed with first magnet, the accommodating groove in the lower die plate is fixed with second magnet, and the first magnet and the second magnet are magnetically connected when the connecting rod rotates into the accommodating groove.

[0007] With the above structure, when the ejector rod is loaded, the push rod is first pushed into the first push rod hole and the second push rod hole, so that the ejector rod extends into the material ejecting hole, the spring is loaded into the first push rod hole, then the positioning block is screwed into the first push rod hole, the connecting rod is rotated so that the connecting rod extends out of the groove, by exerting a force on the connecting rod rotating around the axis of the push rod, the positioning block can still be rotated under force after entering the first push rod hole, so as to adjust the position of the positioning block in the first push rod hole, and thus adjust the elastic force of the spring on the ejector rod after the workpiece is formed, after the positioning block is installed, the connecting rod is rotated so that the connecting rod enters the groove, the connecting rod is fixed in the groove by the first magnet and the second magnet, when the spring loses elasticity or the ejector rod needs to be taken out and replaced, only the connecting rod is rotated so that the connecting rod extends out of the groove, then the positioning block is rotated by the connecting rod, and the spring and the ejector rod can be conveniently taken out by being screwed out, the ejector rod and the spring can be conveniently and quickly disassembled and assembled, and the efficiency of mold maintenance is improved.

[0008] Preferably, in order to facilitate the connecting rod to be pushed out of the accommodating groove, the lower die seat is provided with an operation groove in communication with the accommodating groove, and the width of the operation groove is greater than that of the accommodating groove, so that when the connecting rod needs to be rotated, the connecting rod can be extended into the operation groove and abutted with the connecting rod to rotate the connecting rod.

[0009] Preferably, in order to facilitate the positioning of the lower die seat and the connecting plate, a positioning boss is fixedly arranged on the lower die seat and extends into the second push rod hole, and the material ejecting hole extends from the lower die seat to the positioning boss, and the ejector rod extends into the forming cavity through the positioning boss and the lower die seat.

[0010] Preferably, the upper die assembly comprises an upper die plate, an upper die seat fixedly connected with the upper die plate, and a die head fixed on the upper die seat, and the die head extends into the forming cavity. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be explained further in detail in combination with the drawings and specific embodiment.

[0012] Figure 1 It is the external structure schematic diagram of the utility model.

[0013] Figure 2 It is the internal structure schematic diagram of the utility model.

[0014] Figure 3 It is the positioning block and connecting rod connecting structure schematic diagram of the utility model.

[0015] Figure 4 It is the connecting rod rotates out of the groove structure schematic diagram of the utility model.

[0016] Figure 5 It is the lower die plate bottom structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] As Figures 1 to 5 shown, the utility model discloses a convenient replacement ejector pin's mould includes lower mould subassembly and upper mould subassembly, and lower mould subassembly includes lower mould plate 1, and the connecting plate 2 of fixed connection with lower mould plate and the lower mould seat 3 of fixed connection with connecting plate, and lower mould plate, connecting plate and lower mould seat are fixedly connected through bolt, and lower mould plate is provided with first push rod hole 4, and first push rod hole is provided with positioning block 5, spring 6 and push rod 7, positioning block is threadedly connected with first push rod hole, and one end of spring is connected with positioning block, and the other end is connected with push rod, and connecting plate is provided with second push rod hole 8, and lower mould seat is provided with top feeding hole 9 that communicates with second push rod hole and the forming cavity 10 that communicates with top feeding hole, and push rod extends into second push rod hole from first push rod hole, and the upper end of push rod is fixed with ejector pin, and ejector pin extends through top feeding hole and extends into forming cavity upwards;Upper mould subassembly includes upper mould plate 19, upper mould seat 20 of fixed connection with upper mould plate and mould head 21 fixed on upper mould seat, and the mould head extends into forming cavity.

[0018] As Figures 2 to 5 shown, the lower end of positioning block is provided with recess 11, and connecting shaft 12 is fixed in recess, and connecting rod 13 that is rotatably connected with connecting shaft is sleeved on connecting shaft, and the lower surface of lower mould plate is provided with accommodating groove 14 that corresponds with recess, and the end of connecting rod away from connecting shaft is fixed with first magnet 15, and the accommodating groove in lower mould plate is fixed with second magnet 16, and when connecting rod rotates into accommodating groove, first magnet and second magnet are magnetically connected, and lower mould seat is provided with operating groove 17 that communicates with accommodating groove, and the width of operating groove is greater than the width of accommodating groove.

[0019] In some embodiments, scale 22 is provided on connecting rod 13, and when positioning block is rotated through connecting rod 13, the depth of positioning block can be directly observed through scale.

[0020] In some embodiments, as Figure 2 shown, positioning boss 18 is fixedly arranged on lower mould seat, and positioning boss extends into second push rod hole, and top feeding hole extends from lower mould seat to positioning boss, and push rod extends into forming cavity through positioning boss and lower mould seat.

[0021] With the above structure, when the ejector rod is loaded, the push rod is first pushed into the first push rod hole and the second push rod hole, so that the ejector rod extends into the material ejecting hole, the spring is loaded into the first push rod hole, then the positioning block is screwed into the first push rod hole, the connecting rod is rotated to make the connecting rod extend out of the groove, by exerting a force on the connecting rod around the axis of the push rod, the positioning block can still be rotated under force after entering the first push rod hole, so as to adjust the position of the positioning block in the first push rod hole, and thus adjust the elastic force of the spring on the ejector rod after the workpiece is formed, after the positioning block is installed, the connecting rod is rotated to make the connecting rod enter the groove, the first magnet and the second magnet are used to fix the connecting rod in the groove, when the spring loses elasticity or the ejector rod needs to be taken out and replaced, only the connecting rod is rotated to make the connecting rod extend out of the groove, then the positioning block is rotated by the connecting rod, and the spring and the ejector rod can be conveniently taken out by screwing out the positioning block, the ejector rod and the spring can be conveniently and quickly disassembled and assembled, and the efficiency of mold maintenance is improved.

[0022] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation obtained by using the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A mold for easily replacing a push rod, including a lower mold assembly and an upper mold assembly, characterized in that: The lower mold assembly includes a lower mold plate, a connecting plate fixedly connected to the lower mold plate, and a lower mold base fixedly connected to the connecting plate, the lower mold plate is provided with a first push rod hole, a positioning block, a spring and a push rod are provided in the first push rod hole, the positioning block is threadedly connected to the first push rod hole, one end of the spring is connected to the positioning block, and the other end is connected to the push rod, the connecting plate is provided with a second push rod hole, the lower mold base is provided with a ejection hole connected to the second push rod hole and a molding cavity connected to the ejection hole, the push rod extends from the first push rod hole into the second push rod hole, the upper end of the push rod is fixed with a ejector rod, and the ejector rod extends upward through the ejection hole and extends into the molding cavity; A groove is provided at the lower end of the positioning block, a connecting shaft is fixed in the groove, a connecting rod is mounted on the connecting shaft and is rotatably connected to the connecting shaft, a receiving groove corresponding to the groove is provided on the lower surface of the lower template, a first magnet is fixed at one end of the connecting rod away from the connecting shaft, a second magnet is fixed in the receiving groove of the lower template, and when the connecting rod rotates into the receiving groove, the first magnet is magnetically connected to the second magnet.

2. The mold for convenient ejector pin replacement according to claim 1, characterized in that: The lower die base is provided with an operating groove communicated with the accommodating groove, and the width of the operating groove is greater than the width of the accommodating groove.

3. The mold for convenient ejector pin replacement according to claim 1, characterized in that: A positioning boss is fixedly provided on the lower die base, and the positioning boss extends into the second push rod hole. The ejector hole extends from the lower die base to the positioning boss, and the ejector rod passes through the positioning boss and the lower die base and extends into the forming cavity.

4. The mold for convenient ejector pin replacement according to claim 1, characterized in that: The upper mold assembly includes an upper mold plate, an upper mold base fixedly connected to the upper mold plate, and a mold head fixed on the upper mold base, and the mold head extends into the molding cavity.

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