Nozzle excess material punching die for hardware casting

Abstract

The utility model provides a water gap excess material punching die of a hardware casting, which comprises an upper base plate and a lower base plate which are oppositely arranged in parallel, an upper die plate which is elastically arranged below the upper base plate through a spring, and a lower die plate which is elastically arranged above the lower base plate through a spring, the upper cutter is fixedly installed on the upper base plate and arranged around the peripheral edge of the upper die plate, the lower cutter is fixedly installed on the lower base plate and arranged around the peripheral edge of the lower die plate and is opposite to a cutting edge of the upper cutter, and the oil pressure jacking device is arranged below the lower base plate. The movable end of the oil pressure jacking device penetrates through the lower base plate and is connected with the lower die plate so that the lower die plate can be jacked upwards by a certain distance when the upper cutter and the lower cutter conduct cutting. When the upper cutter and the lower cutter are closed to cut off the water gap, the oil pressure jacking device jacks the lower template upwards for a certain distance, so that excess materials at the cut-off position of the water gap are removed, and a cut-off line is not formed.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing equipment, in particular to a sprue residue punching die for hardware castings. Background Art

[0002] For the hardware parts formed by casting, thicker sprues will be formed at the inlet and outlet of the product corresponding to the forming die, which need to be removed subsequently. Usually, the method adopted is to remove the sprues through a trimming die. However, due to the certain width and thickness of the sprue residue, when the upper and lower cutting blades cut, especially when the precision decreases or the cutting blades are worn, a cutting line will be formed between the blades, thus affecting the shape of the hardware product. Therefore, it is necessary to make improvements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sprue residue punching die without a cutting line.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A sprue residue punching die for hardware castings, comprising an upper substrate and a lower substrate which are arranged opposite and parallel to each other, an upper template elastically installed below the upper substrate through a spring, a lower template elastically installed above the lower substrate through a spring, an upper cutting blade fixedly installed on the upper substrate and arranged along the periphery of the upper template, a lower cutting blade fixedly installed on the lower substrate and arranged along the periphery of the lower template and opposite to the cutting edge of the upper cutting blade, and an oil pressure lifting device arranged below the lower substrate; the movable end of the oil pressure lifting device passes through the lower substrate and is connected with the lower template to be used for jacking the lower template upward by a certain distance when the upper cutting blade and the lower cutting blade perform cutting.

[0006] A preferred scheme, the oil pressure lifting device comprises an oil cylinder, a top plate driven by the oil cylinder and arranged parallel to the lower substrate, and a plurality of support columns vertically fixed on the top plate; the support columns pass through the lower substrate upward and are fixed to the lower template.

[0007] A preferred scheme, an upper partition board is also fixedly attached below the upper substrate, and an upper mounting plate for installing the upper cutting blade is also fixedly attached below the upper partition board; the spring for installing the upper template penetrates through the upper mounting plate and the upper partition board, and in the closed die state, there is a spacing space between the upper template and the upper mounting plate.

[0008] A preferred scheme, in the closed die state, there is a spacing space between the lower template and the lower substrate.

[0009] A preferred scheme, the upper cutting blade and the lower cutting blade include multiple groups arranged along the peripheries of the upper template and the lower template.

[0010] The beneficial effects of the present utility model are as follows: when the upper cutting knife and the lower cutting knife are closed to cut the water inlet, the hydraulic lifting device jacks up the lower template upward by a certain distance, so that the surplus material at the water inlet cutting part is removed and no cutting line will be formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0012] Figure 1 It is a schematic diagram of the overall installation structure of the punching die in the embodiment;

[0013] Figure 2 It is a schematic diagram of the upper half structure of the punching die in the embodiment;

[0014] Figure 3 It is a schematic diagram of the lower half structure of the punching die in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be further described below with reference to the drawings:

[0016] It should be noted that the words indicating directions in this application document, such as the top surface, the bottom surface, the vertical direction, etc., are only for more intuitive description of the structure in combination with the drawings and do not limit the product structure.

[0017] Refer to Figures 1 to 3 As shown, a punching die for surplus material of the water inlet of a hardware casting includes an upper substrate 1 and a lower substrate 2 which are arranged opposite to and parallel to each other, an upper template 11 elastically installed below the upper substrate 1 by a spring, a lower template 21 elastically installed above the lower substrate 2 by a spring, an upper cutting knife 12 fixedly installed on the upper substrate 1 and arranged along the perimeter of the upper template 11, a lower cutting knife 22 fixedly installed on the lower substrate 2 and arranged along the perimeter of the lower template 21 and opposite to the cutting edge of the upper cutting knife 12, and a hydraulic lifting device 3 arranged below the lower substrate 2; the movable end of the hydraulic lifting device 3 passes through the lower substrate 2 and is connected to the lower template 21 for jacking up the lower template 21 upward by a certain distance when the upper cutting knife 12 and the lower cutting knife 22 perform cutting.

[0018] When the upper cutting knife 12 and the lower cutting knife 22 are closed to cut the water inlet, the hydraulic lifting device 3 jacks up the lower template 21 upward by a certain distance, so that the surplus material at the water inlet cutting part is removed and no cutting line will be formed.

[0019] A preferred solution is that the hydraulic jacking device 3 in this embodiment includes an oil cylinder 31, a top plate 32 driven by the oil cylinder 31 and arranged parallel to the lower base plate 2, and a plurality of support columns 33 vertically fixed on the top plate 32; the support columns 33 pass upward through the lower base plate 2 and are fixed to the lower template 21. Through the parallel top plate 32, the jacking force can be balanced, so as to ensure smooth cutting of each side of the hardware part.

[0020] A preferred solution is that a upper partition plate 101 is also fixedly attached to the lower side of the upper base plate 1 in this embodiment, and an upper mounting plate 102 for installing the upper cutter 12 is fixedly attached to the lower side of the upper partition plate 101; the spring for installing the upper template 11 passes through the upper mounting plate 102 and the upper partition plate 101, and in the mold closing state, there is a spacing space between the upper template 11 and the upper mounting plate 102. To reserve an elastic yielding space for the upper template 11.

[0021] A preferred solution is that in this embodiment, in the mold closing state, there is a spacing space between the lower template 21 and the lower base plate 2. To reserve an elastic yielding space for the lower template 21.

[0022] A preferred solution is that the upper cutter 12 and the lower cutter 22 include multiple groups arranged along the circumferences of the upper template 11 and the lower template 21. Each group of cutters can be maintained and replaced separately, reducing the use cost.

[0023] The above does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. A gating residue punching die for a hardware casting, characterized in that: It includes an upper substrate and a lower substrate which are relatively and parallelly arranged, an upper template elastically mounted below the upper substrate by a spring, a lower template elastically mounted above the lower substrate by a spring, an upper cutting knife fixedly mounted on the upper substrate and arranged around the periphery of the upper template, a lower cutting knife fixedly mounted on the lower substrate and arranged around the periphery of the lower template and opposite to the cutting edge of the upper cutting knife, and an oil pressure lifting device arranged below the lower substrate; the movable end of the oil pressure lifting device passes through the lower substrate and is connected to the lower template to be used for jacking up the lower template by a certain distance when the upper cutting knife and the lower cutting knife perform cutting.

2. The gate residue punching die for a hardware casting according to claim 1, wherein: The oil pressure lifting device includes an oil cylinder, a top plate driven by the oil cylinder and arranged parallel to the lower substrate, and a plurality of support columns vertically fixed on the top plate; the support columns pass through the lower substrate upward and are fixed to the lower template.

3. The gating residue punching die for a hardware casting according to claim 1, wherein: An upper partition board is also fixedly attached to the lower part of the upper substrate, and an upper mounting plate for mounting the upper cutting knife is also fixedly attached to the lower part of the upper partition board; the spring for mounting the upper template penetrates through the upper mounting plate and the upper partition board, and in the mold closing state, there is a spacing space between the upper template and the upper mounting plate.

4. The gate residue punching die for a hardware casting according to claim 3, characterized in that: In the mold closing state, there is a spacing space between the lower template and the lower substrate.

5. The gate waste blanking die for a hardware casting according to claim 1, characterized in that: The upper cutting knife and the lower cutting knife include multiple groups arranged around the peripheries of the upper template and the lower template.

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