Universal die for cutting off pouring gate of die casting

Abstract

The utility model belongs to the field of die casting machining, and provides a universal die for cutting off a pouring gate of a die casting, the universal die comprises an upper die and a lower die, the upper die and the lower die are provided with a plurality of pairs of pressing columns which are oppositely arranged, the front side of the upper die and the front side of the lower die are respectively provided with a sliding groove, and the pressing columns are arranged in the sliding grooves. A plurality of cutter blocks are arranged in each sliding groove, the upper cutter blocks and the lower cutter blocks are oppositely arranged, a row of extrusion nuts are screwed into the side edges of the front faces of the upper die and the lower die, and the tail ends of the extrusion nuts abut against the cutter blocks in an extrusion mode. Before the sprues of the die casting are cut off, the mounting positions of the upper cutter block and the lower cutter block are adjusted according to the positions of the sprues on the die casting, then the die casting is placed on the lower die according to corresponding requirements, at the moment, the sprues at all positions are borne on the lower cutter block, each upper cutter block corresponds to and aligns to the corresponding sprue, and finally the upper die moves downwards; and after the upper cutter block moves towards the pouring gate until the pouring gate is cut off, the upper die is reset to wait for cutting off the next die casting.

Description

Technical Field

[0001] The utility model belongs to the field of die casting processing, in particular to a universal mold for cutting off a gate of a die casting. Background Art

[0002] It is well known that during die casting operations, whether large or small die casting parts, the gate needs to be cut after die casting. The die casting needs to be clamped before cutting the gate to increase the cutting effect of the die casting.

[0003] When cutting the gate of a die-casting, the die-casting is clamped and fixed with the help of a mold, and then the gate is cut. The traditional way of cutting the gate is generally to use one mold for one die-casting, that is, a mold needs to be designed for each die-casting to saw the die-casting gate. This has a long mold development cycle and high processing costs. At the same time, different types of molds take up more space. Therefore, a universal mold for cutting the gate of a die-casting is proposed, which can clamp die-castings of different sizes to cut the gate. Although there are some universal molds for cutting the gate of die-castings, the adjustment of the universal clamp is more troublesome when installing the knife block, and the knife block is not installed stably enough, resulting in poor cutting quality. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a universal mold for cutting off the inlet gate of a die casting, aiming to solve the problems that the existing mold for cutting off the inlet gate of a die casting has low adaptability and poor cutting quality.

[0005] The utility model adopts the following technical scheme: the universal mold comprises an upper mold and a lower mold, and the upper mold and the lower mold are provided with a plurality of pairs of pressure columns arranged oppositely. The front sides of the upper mold and the lower mold are each provided with a slide groove, and each slide groove is provided with a plurality of knife blocks, and the upper and lower knife blocks are arranged oppositely. A row of extrusion nuts are screwed into the front sides of the upper and lower molds, and the ends of the extrusion nuts are extruded and abutted against the knife blocks.

[0006] Furthermore, a slot is provided on the outer side of each upper knife block, wherein the upper slide slot is provided with a clamping strip matching the slot, wherein the lower slide slot is provided with a baffle strip, and the end of the extrusion nut is squeezed and abutted against the corresponding clamping strip and baffle strip.

[0007] Furthermore, the four corners of the lower mold are all provided with guide openings, and the four corners of the upper mold are all provided with matching guide rods facing the guide openings.

[0008] Furthermore, a plurality of threaded holes are opened on the top surface of the lower mold, a pair of limit screws are screwed into the left and right sides of the lower mold, and a pair of adjustable limit components are also provided on the lower mold.

[0009] Furthermore, the limiting assembly includes a limiting block, a limiting groove is opened on the limiting block, a limiting nut is inserted into the limiting groove, and the bottom of the limiting nut is screwed into the corresponding threaded hole.

[0010] The beneficial effect of the utility model is that before cutting off the gate of the die-casting, firstly, the installation position of the upper and lower knife blocks is adjusted according to the position of each gate on the die-casting, and then the die-casting is placed on the lower mold according to the corresponding requirements. At this time, each gate is carried on the lower knife block, and each upper knife block corresponds to and aligns with each gate. At the same time, the pressure column on the lower mold plays a role in supporting the die-casting. Finally, the upper mold moves downward, and the upper knife block moves toward the gate until the gate is cut off. At this time, the pressure column on the upper mold presses the die-casting, and the upper mold is reset to wait for the next die-casting to be cut off. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a side view of a universal mold for cutting off a gate of a die casting.

[0012] Figure 2 This is a front view of a universal mold for cutting off a gate for a die casting provided by the utility model

[0013] Figure 3 The utility model provides a schematic diagram of the upper mold structure.

[0014] Figure 4 The utility model provides a schematic diagram of the lower mold structure. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0017] For the convenience of explanation, only the parts related to the embodiment of the present utility model are shown.

[0018] Combination Figure 1-4 As shown, the universal mold includes an upper mold 1 and a lower mold 2, and a plurality of pairs of relatively arranged pressure columns 3 are provided on the upper mold 1 and the lower mold 2. A slide groove 4 is opened on the front side of the upper mold 1 and the lower mold 3, and a plurality of knife blocks are arranged in each slide groove 4. The upper and lower knife blocks are relatively arranged, wherein the upper knife block is marked as 51 and the lower knife block is marked as 52. A row of extrusion nuts 6 are screwed into the front sides of the upper and lower molds, and the ends of the extrusion nuts 6 are squeezed and abutted against the knife blocks.

[0019] As is known to all, during die casting operation, die castings need to cut the gate after die casting. Some die castings can use this universal mold to clamp and fix the die castings before cutting the gate, so as to improve the cutting effect of the gate of the die castings.

[0020] The mold is used as a universal mold for the gate of die castings. Before cutting the gate of some die castings, the positions of the upper and lower sets of knife blocks can be adjusted according to the die castings of different sizes.

[0021] Before cutting off the gate of the die-casting, first adjust the installation position of the upper and lower knife blocks according to the position of each gate on the die-casting, and then place the die-casting on the lower mold according to the corresponding requirements. At this time, each gate is carried on the lower knife block, and each upper knife block corresponds to and aligns with each gate. At the same time, the pressure column on the lower mold plays a role in supporting the die-casting. Finally, the upper mold moves downward, and the upper knife block moves toward the gate until the gate is cut off. At this time, the pressure column on the upper mold presses the die-casting, and the upper mold is reset, waiting to cut off the next die-casting.

[0022] As a preferred structure, a slot 7 is formed on the outer side of each upper knife block 51, wherein a clamping strip 8 matching the slot 7 is also formed in the upper slide groove, wherein a baffle 9 is formed in the lower slide groove, and the end of the extrusion nut 6 is squeezed and abutted against the corresponding clamping strip 8 and baffle 9.

[0023] When the installation position of the upper blade block needs to be adjusted, firstly, a matching number of upper blade blocks are inserted into the upper chute according to the number of gates, and the upper blade blocks are gradually slid so that the blade edges of the upper blade blocks are all aligned with the gates at one place, and finally, the extrusion nuts at the upper ends are tightened one by one, and the clamping strips are inserted and abutted into the clamping slots of all the upper blade blocks under the push of the extrusion nuts, and the upper blade blocks are installed and fixed under the limiting and abutting effects of the clamping strips. The whole process is relatively simple, and under the abutment of the clamping strips, the installation of the upper blade blocks is more stable.

[0024] Since the lower mold is located on the workbench, and the die casting is located on the lower knife block. Similarly, according to the number of gates, the corresponding lower knife block is inserted into the slide chute and adjusted, that is, the lower knife block corresponds to and aligns with each gate, and the lower knife block is squeezed through the baffle to prevent the lower knife block from sliding during the process of cutting the gate. Specifically: after determining the installation position of each lower knife block, tighten a row of extrusion nuts on the lower mold one by one, and under the push of the extrusion nut, the baffle squeezes and resists all the lower knife blocks.

[0025] In this structure, combined Figure 3-4 The four corners of the lower mold 2 are all provided with guide openings 13 , and the four corners of the upper mold 1 are all provided with matching guide rods 14 facing the guide openings 13 .

[0026] When the universal mold is used to cut the die casting inlet, the upper mold is moved downward as a whole. In this process, the four guide rods all move toward the guide port. Under the guidance of the guide rods, the upper mold is more stable during the movement, thereby improving the cutting effect of the die casting inlet.

[0027] Further as a preferred structure, Figure 4 The top surface of the lower mold 2 is provided with a plurality of threaded holes 15 , and a pair of limit screws 16 are screwed into the left and right sides of the lower mold 2 . The lower mold 2 is also provided with a pair of adjustable limit assemblies.

[0028] When the die-casting is installed on the lower mold as required, the die-casting is located on the pressure column on the lower mold and each gate of the die-casting is supported on the lower knife block. The two pairs of limiting screws are respectively screwed into the threaded holes located on and close to the two sides of the die-casting. The die-casting is limited by the left and right pairs of limiting screws. Finally, the two sets of limiting components are installed on the rear side of the die-casting to limit the die-castings of different specifications.

[0029] Further as a preferred structure, the limit assembly includes a limit block 17, a limit groove (blocked in the figure) is opened on the limit block, a limit nut 18 is inserted into the limit groove, and the bottom of the limit nut 18 is screwed into the corresponding threaded hole 15.

[0030] In this structure, when two sets of limit assemblies are used to limit the rear end of the die casting, the limit block is placed on the lower mold and in contact with the rear end of the die casting, the limit nut is inserted into the limit block and screwed into the corresponding threaded hole to lock it, and the limit block is now installed.

[0031] In actual situations, the installation position of the limit block can be further fine-tuned. When the limit block is fine-tuned, the limit nut is loosened, and the limit block can move a short distance forward and backward, and then the limit nut is tightened. In this way, fast positioning of different die castings can be achieved.

[0032] In addition, if Figure 2 , Figure 4 The four corners of the lower mold 2 are also provided with limiters 19. When the upper knife block completes the cutting of the gate, the top of the limiter is supported on the upper mold to avoid the upper mold continuing to move downward after cutting, causing damage to the upper and lower knife blocks.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the present utility model.

Claims

1. A universal mold for cutting off the gate of a die casting, characterized in that: The universal mold includes an upper mold and a lower mold, and a plurality of pairs of pressure columns are arranged opposite to each other on the upper mold and the lower mold. A slide groove is opened on the front side of the upper mold and the lower mold, and a plurality of knife blocks are arranged in each slide groove. The upper and lower knife blocks are arranged opposite to each other. A row of extrusion nuts are screwed into the front sides of the upper and lower molds, and the ends of the extrusion nuts are squeezed and abutted against the knife blocks.

2. A universal mold for cutting a gate for a die casting as claimed in claim 1, characterized in that: A card slot is formed on the outer side of each upper blade block, wherein a card strip matching the card slot is provided in the upper slide slot, wherein a baffle is provided in the lower slide slot, and the end of the extrusion nut is pressed against the corresponding card strip and baffle.

3. A universal mold for cutting a gate of a die casting as claimed in claim 2, characterized in that: The four corners of the lower mold are all provided with guide openings, and the four corners of the upper mold are all provided with matching guide rods facing the guide openings.

4. A universal mold for cutting a gate for a die casting as claimed in claim 3, characterized in that: The top surface of the lower mold is provided with a plurality of threaded holes, a pair of limiting screws are screwed into the left and right sides of the lower mold, and a pair of adjustable limiting components are also provided on the lower mold.

5. A universal mold for cutting a gate of a die casting as claimed in claim 4, characterized in that: The limiting assembly comprises a limiting block, a limiting groove is formed on the limiting block, a limiting nut is inserted into the limiting groove, and the bottom of the limiting nut is screwed into the corresponding threaded hole.

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