Hub mold structure capable of adjusting sand core gap

Abstract

The utility model discloses a hub mould structure capable of adjusting sand core clearance, which comprises a lower mould core, an upper mould core and a side mould, a plurality of mounting holes are arranged on the upper end face of the lower mould core, filling blocks or heightening blocks are mounted in the mounting holes, the upper end faces of the filling blocks are flush with the upper end face of the lower mould core, and the upper end faces of the heightening blocks are higher than the upper end face of the lower mould core. The gap between the sand core and the mold can be adjusted, and the sand core is prevented from being crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more specifically to a hub mold structure capable of adjusting sand core gaps. Background Art

[0002] Large-sized sand cores tend to be too high during the production process, and the thermal expansion of the product mold itself is also random. When the mold is first made, it is difficult to design the gap between the sand core and the mold in one go. During the casting production process, if the product mold presses on the sand core, the sand core will fall off, resulting in the inability to produce castings. The machine needs to be taken down to repair the mold, and the amount of mold repair is difficult to control. This will also affect the progress of product sample delivery. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provide a hub mold structure with adjustable sand core gap.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a wheel hub mould structure with adjustable sand core gap, comprising a lower mould core, an upper mould core and side moulds, wherein the upper end surface of the lower mould core is provided with a plurality of mounting holes, in which filling blocks or padding blocks are mounted, the upper end surface of the filling blocks is flush with the upper end surface of the lower mould core, and the upper end surface of the padding blocks is higher than the upper end surface of the lower mould core.

[0006] Furthermore, a step hole is provided in the middle of the pad block, a fixing screw is provided at the step hole, and the lower end of the fixing screw is screwed into the lower mold core.

[0007] Furthermore, a plurality of mounting holes are evenly distributed in a circular shape on the lower mold core.

[0008] Furthermore, the number of the mounting holes is set to be at least three.

[0009] The beneficial effect of the utility model is that a height difference is formed between the upper mold core and the lower mold core by arranging the padding block, so that the sand core will not be crushed, and the sample can be made without repairing the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of a hub mold structure capable of adjusting the sand core gap in this embodiment;

[0011] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0012] Figure 3 It is a top view of the lower mold core in this embodiment.

[0013] Figure numerals: 1, lower mold core; 2, mounting hole; 3, spacer block; 4, step hole; 5, fixing screw; 6, upper mold core; 7, side mold; 8, sand core. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] As attached Figure 1 , Attachment Figure 3 As shown, a wheel hub mold structure with adjustable sand core gap includes a lower mold core 1, an upper mold core 6 and a side mold 7. The upper end surface of the lower mold core 1 is provided with a plurality of mounting holes 2, and the mounting holes 2 are evenly distributed in a circular shape on the lower mold core 1, and also includes a filling block or a padding block 3.

[0016] When the mold is installed on the machine for the first time, install the leveling block in the mounting hole 2, and the upper end surface of the leveling block is flush with the upper end surface of the mounting hole 2. If the sand core 8 located between the upper mold core 6 and the lower mold core 1 is not crushed during the production process, it indicates that the mold design is in place. If the sand core 8 is crushed, it indicates that the mold design is not in place, and the leveling block is removed from the mounting hole 2. Install the pad block 3 in the mounting hole 2, and the upper end surface of the pad block 3 is higher than the upper end surface of the lower mold core 1. In this way, when the upper mold core 6 and the lower mold core 1 are closed, the lower end surface of the upper mold core 6 will rest on the upper end surface of the pad block 3, forming a height difference between the upper mold core 6 and the lower mold core 1, and then observe the condition of the sand core 8, and decide whether the remaining pad blocks 3 need to be replaced.

[0017] There are many specifications of the padding block 3. The upper end surface of the padding block 3 used for the first time is 0.5mm higher than the upper end surface of the lower mold core 1. With this height difference, the sand core 8 will basically not be crushed. If it is still crushed, replace the padding block 3 with an upper end surface 0.8mm higher than the upper end surface of the lower mold core 1.

[0018] As attached Figure 2 As shown, a step hole 4 is opened in the middle position of the raising block 3, and a fixing screw 5 is provided at the step hole 4. The head of the fixing screw 5 is stuck in the step of the step hole 4, and the lower end of the fixing screw 5 is screwed into the lower mold core 1. The raising block 3 is effectively fixed in the mounting hole 2 by the fixing screw 5.

[0019] The number of the mounting holes 2 is at least three, so that the installed raising block 3 can stably support the upper mold core 6 .

[0020] The diameter of the heightening block 3 is 0.2-0.3 mm smaller than the diameter of the mounting hole 2, and is preferably 0.25 mm.

[0021] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wheel hub mold structure with adjustable sand core gap, characterized in that: The mold comprises a lower mold core (1), an upper mold core (6) and a side mold (7); the upper end surface of the lower mold core (1) is provided with a plurality of mounting holes (2); a filling block or a padding block (3) is installed in the mounting hole (2); the upper end surface of the filling block is flush with the upper end surface of the lower mold core (1); the upper end surface of the padding block (3) is higher than the upper end surface of the lower mold core (1).

2. A wheel hub mold structure with adjustable sand core gap according to claim 1, characterized in that: A step hole (4) is provided in the middle of the padding block (3), a fixing screw (5) is provided at the step hole (4), and the lower end of the fixing screw (5) is screwed into the lower mold core (1).

3. The wheel hub mold structure with adjustable sand core gap according to claim 1, characterized in that: The plurality of mounting holes (2) are evenly distributed in a circular shape on the lower mold core (1).

4. A wheel hub mold structure with adjustable sand core gap according to claim 3, characterized in that: The number of the mounting holes (2) is at least three.

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