An adjustable low pressure casting mold for casting a profile

Abstract

The utility model relates to metal casting technical field, and disclose a kind of low-pressure casting mould of adjustable casting cavity, including top die, bottom die, side mould, top rod, top rod plate, connecting plate, pull rod, the top die includes top die body, top die core, slider, inclined guide pillar, stop block, spring, the top die body is fixedly connected with stop block by bolt, and slidingly connected between slider, the top die core is fixedly connected with shunt cone, top die core and slider can be relatively moved between.The inclined guide pillar is fixed on connecting plate, connecting plate fixed pull rod, pull rod top end sets drive mechanism, for the lifting of inclined guide pillar, the slider corresponding inclined guide pillar direction sets a from top to bottom inclined through-hole, when inclined guide pillar moves downward, it can be inserted into the inclined through-hole of slider, slider is driven to move in direction away from top die core.This structure mould structure when switching size offset product does not need to add additional top die core, and can easily realize the change type work on die-casting machine platform, i.e. simple structure, convenient operation, improve metal utilization rate can also save time and increase production efficiency, save production cost.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, and in particular to a low-pressure casting mold with an adjustable casting cavity. Background Technology

[0002] The aftermarket for wheels offers a diverse range of products, with many different offsets available for the same design and size (as shown in the attached image). Figure 1 As shown, when products with different offsets are produced using a single mold, the following problem arises: when producing small offsets, the machining amount is small and the metal utilization rate is high; however, when producing large offsets, the machining amount is large, there are many casting defects, and the casting structure is not dense, affecting the strength, resulting in low metal utilization. The current solution to this problem is to use a mold core, where multiple offset products are divided into multiple mold cores according to the offset value, and the mold is run on the machine multiple times. The disadvantage of this method is that it requires frequent running on the machine, which prevents continuous production, reduces production capacity, and wastes production time and costs.

[0003] Therefore, developing a low-pressure casting mold with an adjustable casting cavity, which can improve metal utilization and does not require frequent machine loading, is an urgent problem to be solved in actual production. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a low-pressure casting mold with an adjustable casting cavity, thereby solving the problems of low metal utilization rate in multi-offset products or frequent machine loading, which affects production efficiency and cost.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model invention is as follows:

[0006] A low-pressure casting mold with an adjustable casting cavity includes a top mold, a bottom mold, a side mold, an ejector rod, an ejector rod plate, a flow divider cone plate, a connecting plate, and a tie rod. The top mold includes a top mold body, a top mold core, a slider, an inclined guide post, a stop block, and a spring. The top mold body and the stop block are fixedly connected by bolts and slidably connected to the slider. The top mold core and the flow divider cone are fixedly connected, and the top mold core and the slider can move relative to each other. The inclined guide post is fixed to the connecting plate, and the connecting plate fixes the tie rod. A drive mechanism is provided at the top of the tie rod for adjusting the lifting and lowering of the inclined guide post. The slider has an inclined through hole from top to bottom corresponding to the inclined guide post, so that when the inclined guide post moves downward, it can be inserted into the inclined through hole of the slider, driving the slider to move away from the top mold core. The slider and the stop block have a circular hole in the same horizontal direction, in which a spring is installed, and one end of the spring is fixed in the circular hole of the slider. When the drive mechanism drives the inclined guide post to move upward, the slider will move towards the top mold core through the sliding key on the top mold. When the inclined guide post completely comes out of the inclined through hole of the slider, the spring will push the slider towards the top mold core, so that the slider contacts the top mold core. At this time, the slider, top mold core, top mold body, bottom mold, side mold and flow divider cone constitute the casting cavity.

[0007] The mold also includes an ejector rod for ejecting and demolding the wheel blank. The ejector rod 41 has a locking block 42 above the ejector plate 4 and a locking block 43 above the flow divider cone plate 31.

[0008] The number of sliders and stops is 4. The 4 sliders are assembled together to form a circle. Each slider has an inclined guide post above it. The 4 inclined guide posts are connected to the connecting plate. The connecting plate is fixed with 2 pull rods.

[0009] The beneficial effects of this utility model are as follows:

[0010] In this invention, the top mold core and the flow divider cone are fixedly connected, the top mold body and the stop block are fixedly connected, and the slider is slidably connected. The ejector rod passes through the ejector plate, and a locking block is set below the ejector plate. When it is necessary to change to produce products with different offsets during production, the drive mechanism drives the inclined guide column to slide the slider away from the top mold core. By adjusting the two locking blocks on the ejector rod, the die-casting machine drive moves the flow divider cone, the top mold core, and the central ejector rod upward together. The distance moved is determined by the difference in wheel offset before and after the mold change. At this time, the inclined guide column moves upward and disengages from the slider. The spring in the stop block pushes the slider towards the top mold core to cooperate with the top mold core and form a new casting cavity. The two locking blocks are adjusted again to fix the ejector rod, completing the mold change. This structure is simple and easy to operate, and mold change can be easily achieved on the die-casting machine. This improves metal utilization, saves time, increases production efficiency, and thus saves production costs. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of a multi-offset wheel.

[0013] Figure 2 This is the mold closing state when producing large offset wheels according to this utility model.

[0014] Figure 3 This is the mold closing state when producing small offset wheels according to this utility model.

[0015] Figure 4 This is a structural schematic diagram of the utility model in the mold-opening state.

[0016] Figure 5 This is a schematic diagram of the structure of the utility model in the demolded state.

[0017] Figure 6 This is a schematic diagram of the 3D structure of the slider in the utility model.

[0018] In the diagram: 1--Top mold; 11--Top mold body; 111--Guide groove; 12--Top mold core; 13--Slider; 131--Angled through hole; 132--Spring hole; 133--Guide key; 14--Stop block; 2--Angled guide post; 21--Connecting plate; 22--Tie rod; 23--Drive mechanism; 3--Diverter cone; 31--Diverter cone plate; 32--Die casting machine drive; 4--Ejector plate; 41--Ejector rod; 42--No. 1 locking block; 43--No. 2 locking block; 5--Bottom mold; 6--Side mold. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figure 1-5 As shown, a low-pressure casting mold with an adjustable casting cavity includes a top mold 1, a bottom mold 5, a side mold 6, an ejector pin 41, an ejector pin plate 4, and a flow divider cone plate 31. The top mold 1 includes a top mold body 11, a top mold core 12, a slider 13, an inclined guide post 2, a stop block 14, and a spring 133. A guide key 133 is provided on the lower end face of the slider 13. A guide groove is designed at the contact surface between the top mold body 11 and the slider 13. The top mold body 11 is fixedly connected to the stop block 14 by bolts and slidably connected to the slider 13. The top mold core 12 is fixedly connected to the flow divider cone 3, and the top mold core 12 and the slider 13 can move relative to each other.

[0021] The number of sliders 13 and stops 14 is 4. The 4 sliders are assembled together to form a circle. Each slider 13 is provided with an inclined guide post 2 above it. The 4 inclined guide posts 2 are connected to the connecting plate 21. The connecting plate 21 is fixed with two pull rods 22.

[0022] The inclined guide post 2 passes through the stop block 14 and is fixed on the connecting plate 21. The connecting plate 21 fixes the pull rod 22. The top of the pull rod 22 is provided with a drive mechanism 23 for adjusting the lifting of the inclined guide post 2.

[0023] The slider 13 has a downward-facing oblique through hole 131 corresponding to the oblique guide post 2, allowing the oblique guide post 2 to be inserted into the oblique through hole 131 of the slider 13 when it moves downward, thus driving the slider 13 to move away from the top mold core 12. The slider 13 and the stop block 14 have spring holes 132 in the same horizontal direction, where springs are installed and one end of the spring is fixed inside the spring hole 132 of the slider 13.

[0024] The top rod 41 is provided with a first locking block 42 above the top rod plate 4 and a second locking block 43 above the diversion cone plate 31.

[0025] The operation steps for changing from a large offset product to a small offset product using this utility model mold are as follows:

[0026] Step 1: The drive mechanism 23 drives the pull rod 22, which in turn drives the inclined guide post 2 to move downward, so that the inclined guide post 2 is inserted into the inclined through hole 131 of the slider 13, and drives the slider 13 to move away from the top mold core 12.

[0027] Step 2: Adjust the No. 2 locking block 43 on the top rod to the upper end face of the diversion cone plate 31 and then lock it.

[0028] Step 3: The die-casting machine drive 32 drives the flow divider cone 31, which in turn drives the top mold core 12 and the ejector rod 41 to move upward. The upward movement value is determined by the offset difference between the two products.

[0029] Step 4: Adjust the No. 1 locking block 42 on the top rod to lock it on the upper end face of the top rod plate 4, and open the No. 2 locking block 43 and move it to the lower end face of the top rod plate 4 to lock it. The purpose is to fix the adjusted top rod 41.

[0030] Step 4: After the inclined guide post 2 is pulled away from the slider 13 by the drive mechanism 23, it returns to its original position. At this time, the spring in the stop block 14 and the slider 13 will push the slider 13 towards the top mold core 12 to cooperate with the top mold core 12. At this time, the mold profile with small offset is ready.

[0031] Step 5: After the aluminum liquid is filled, the side mold 6 is opened, and the top mold 1 and the top mold core 12, along with the casting, move upward from the bottom mold 5, completing the first mold opening action; the drive mechanism 23 drives the inclined guide post 2 to move downward, and the inclined guide post 2 inserts into the inclined through hole 131 of the slider 13, causing the slider 13 to move away from the top mold core 12, completing the second mold opening action; finally, the ejector plate 4 drives the ejector rod 41 to move downward to complete the ejection action.

Claims

1. A low-pressure casting mold with an adjustable casting cavity, comprising a top mold, a bottom mold, a side mold, an ejector pin, an ejector pin plate, a flow divider cone plate, a connecting plate, and a tie rod, characterized in that: The top mold includes a top mold body, a top mold core, a slider, an inclined guide post, a stop block, and a spring. A guide key is provided on the lower end face of the slider. A guide groove is designed at the contact surface between the top mold body and the slider. The top mold body and the stop block are fixedly connected by bolts and are slidably connected to the slider. The top mold core and the flow divider cone are fixedly connected. The top mold core and the slider can move relative to each other.

2. The low-pressure casting mold with adjustable casting cavity according to claim 1, characterized in that: The top rod has a No. 1 locking block above the top rod plate and a No. 2 locking block above the diversion cone plate.

3. The low-pressure casting mold with adjustable casting cavity according to claim 1, characterized in that: The inclined guide post passes through the stop block and is fixed to the connecting plate. The connecting plate fixes the pull rod, and a drive mechanism is set at the top of the pull rod for adjusting the lifting and lowering of the inclined guide post.

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