Gravity casting equipment

Abstract

The utility model discloses gravity casting equipment which comprises a casting table, a front mold base and a rear mold base are arranged on the casting table, a front mold and a rear mold are arranged on the opposite side faces of the front mold base and the rear mold base respectively, and the front mold base and the rear mold base can move front and back relatively and are provided with a mold closing power source in a matched mode. The mold is characterized in that the front mold and the rear mold are respectively connected with the front mold base and the rear mold base in an inserting manner, and the inserting direction is from top to bottom. The die holder is reasonable in structure, and the die can be quickly mounted and replaced on the die holder.

Description

Technical Field

[0001] This utility model relates to an improvement invention in the field of casting and molding, and more particularly to an improvement invention of gravity casting equipment. Background Technology

[0002] Existing gravity casting equipment typically includes a front mold base and a rear mold base that can move relative to each other. A front mold and a rear mold are fixedly mounted on the front mold base and rear mold base, respectively. After the front mold and rear mold are closed, a casting gate is formed at the top. Molten material is poured into the casting gate, and gravity fills the mold cavity. After the mold has cooled and solidified, the front mold and rear mold separate, and the cast product is demolded. Different molds are required to cast different products; however, because the molds are fixed to the mold base, mold replacement is difficult, severely impacting the efficiency of the casting operation, or even impossible, reducing the utilization rate of the gravity casting equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a gravity casting device with quick mold replacement.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the gravity casting equipment includes a front mold base and a rear mold base arranged opposite to each other. The front mold base and the rear mold base are respectively provided on opposite sides, and the front mold base and the rear mold base can be moved back and forth relative to each other. It is equipped with a mold closing power source. The characteristic is that the front mold base and the rear mold base are respectively connected to the front mold base and the rear mold base by insertion, and the insertion direction is from top to bottom.

[0005] Both the front mold base and the rear mold base are provided with left and right slot plates arranged opposite each other. The left and right slot plates cooperate with each other to form a mold slot, and the mold is equipped with a downward limiting structure.

[0006] The front mold and the rear mold are respectively connected to the front mold base and the rear mold base by dovetail groove and trapezoidal guide rail, and the mold is equipped with a downward limiting structure.

[0007] The front mold base and the rear mold base are set on the casting platform. The casting platform is also provided with a fixing plate. Several guide pillars are provided between the fixing plate and the front mold base. The corresponding rear mold base can be moved back and forth and is set on the guide pillars. The rear mold base is also connected to the mold closing power source for transmission.

[0008] The mold closing power source is a first cylinder, which is mounted on a fixed plate, and the drive shaft of the first cylinder is connected to the rear mold base for transmission.

[0009] The left and right slot plates on the front mold base are each equipped with a swing block that can strike the mold. The corresponding front mold base is equipped with a second cylinder, which is driven by the swing block.

[0010] The front mold is equipped with an automatic core-pulling mechanism.

[0011] The automatic core-pulling mechanism includes a mandrel, a return spring, and a third cylinder. One end of the mandrel is movable and passes through and is limited on the front mold. The return spring is sleeved on the mandrel and is limited between the other end of the mandrel and the front mold. The third cylinder is in transmission cooperation with the other end of the mandrel.

[0012] The casting table includes a table surface and a support. The table surface is rotatably mounted on the support with a rotation angle of less than 90 degrees. The table surface is equipped with a rotation power source.

[0013] Both the front mold and the rear mold are equipped with lifting parts.

[0014] The beneficial effects of this utility model are that the improved gravity casting equipment has a reasonable structure, and the mold and mold base are connected by a plug-in connection, which realizes the quick installation and replacement of the mold and effectively improves the efficiency of the casting operation. Attached Figure Description

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a side view of the structure of this utility model.

[0018] Figure 3 This is a structural diagram of the present invention arranged on the casting platform.

[0019] Figure 4 This is a structural diagram showing the rotatable configuration of this utility model. Detailed Implementation

[0020] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1-4 The gravity casting equipment includes a casting platform 1 and an equipment operation panel. The casting platform 1 is provided with a front mold base 2 and a rear mold base 3. The front mold base 2 and the rear mold base 3 are respectively provided with a front mold 4 and a rear mold 5 on their opposite sides. The front mold 4 and the rear mold 5 can be closed to form an upper casting port. The front mold base 2 and the rear mold base 3 can be moved back and forth relative to each other and are equipped with a mold closing power source 6. The front mold 4 and the rear mold 5 are respectively connected to the front mold base 2 and the rear mold base 3 by plug-in connection, and the plug-in direction is from top to bottom. That is, the front mold 4 can be inserted from the upper end of the front mold base 2 and confined on the front mold base 2, and the rear mold 5 can be inserted from the upper end of the rear mold base 3 and confined on the rear mold base 3, so as to realize quick installation and replacement.

[0021] As one specific embodiment of the mold base and mold insertion connection, both the front mold base 2 and the rear mold base 3 are provided with left groove plate 7 and right groove plate 8 arranged opposite to each other. The left groove plate 7 and right groove plate 8 cooperate with each other to form a mold slot, which is shaped like a T-slot and serves to limit the front, back, left and right movement. The corresponding two sides of the mold are inserted into the mold slot, and the mold is equipped with a downward limiting structure. Preferably, the downward limiting structure is a limiting plate 14 set at the lower end of the left groove plate 7 and right groove plate 8, or the downward limiting structure is a limiting block set on the mold. The limiting block is limited and cooperates with the upper end of the left groove plate 7 and right groove plate 8. During installation, the two sides of the mold are aligned with the left groove plate 7 and right groove plate 8 respectively, and inserted from above until the mold moves down into place.

[0022] In a second specific implementation method where the mold base and mold are connected by insertion, the front mold 4 and rear mold 5 are respectively connected to the front mold base 2 and rear mold base 3 via dovetail grooves and trapezoidal guide rails. The mold is equipped with a downward limiting structure, preferably a limiting plate located at the lower end of the guide rail, or a limiting block located on the mold, which engages with the dovetail groove or the upper end of the guide rail. That is, the mold is provided with a dovetail groove or trapezoidal guide rail, and the corresponding mold base is provided with a trapezoidal guide rail or dovetail groove. To improve stability, they are arranged symmetrically on both sides. During installation, the dovetail groove corresponds to the trapezoidal guide rail and is inserted from above until the mold moves down into place.

[0023] As a specific implementation of the relative movement of the front mold base 2 and the rear mold base 3, the casting table 1 is also provided with a fixing plate 9, and a plurality of guide pillars 10 are provided between the fixing plate 9 and the front mold base 2. The corresponding rear mold base 3 can be moved back and forth and is disposed on the guide pillars 10, and the rear mold base 3 is driven and cooperated with the mold closing power source 6. The mold closing power source 6 is preferably a first cylinder, which is disposed on the fixing plate 9, and the drive shaft of the first cylinder is driven and connected to the rear mold base 3.

[0024] As one specific implementation method for assisting demolding, the left groove plate 7 and the right groove plate 8 on the front mold base 2 are each provided with a swing block 13 that can strike the mold. The middle of the corresponding swing block 13 is hinged in the mounting groove on the side of the left groove plate 7 or the right groove plate 8. The corresponding front mold base 2 is provided with a second cylinder 11. The second cylinder 11 is driven by the swing block 13. When working, the drive shaft of the second cylinder 11 touches one end of the swing block 13, causing the other end of the swing block 13 to strike the mold and generate vibration, thereby reducing the adhesion between the product cast in the mold and the mold cavity.

[0025] As a second specific implementation method for assisting demolding, the front mold 4 is equipped with an automatic core-pulling mechanism 12. Specifically, the automatic core-pulling mechanism 12 includes a mandrel, a return spring, and a third cylinder. Preferably, multiple mandrels are provided, each corresponding to multiple parts of the cast product. Each mandrel is equipped with a return spring, and multiple mandrels are driven by the third cylinder. One end of the mandrel is movably inserted through and limited on the front mold 4, and the limitation is achieved by a boss at the end of the mandrel. The return spring is sleeved on the mandrel, and the return spring is limited between the other end of the mandrel and the front mold 4. The third cylinder is driven by the other end of the mandrel. During operation, the front mold 4 and the rear mold 5 are pre-separated, and the cast product remains in the front mold 4. The third cylinder pushes the other end of the mandrel forward, overcoming the elastic force of the return spring. The corresponding mandrel end extends into the mold cavity of the front mold 4 to push out the cast product. Afterward, the third cylinder resets, and the mandrel is reset by the return spring.

[0026] For a specific implementation method of uniform casting, see Appendix Figure 4 The casting table 1 includes a tabletop and a support. The tabletop is rotatably mounted on the support with a rotation angle of less than 90 degrees. A rotational power source 15 is provided on the tabletop. Specifically, a rotating shaft is located at the middle of the front and rear ends of the tabletop. The rotating shaft is mounted on the support via bearings and bearing seats. The rotational power source is a motor, and the output shaft of the motor is connected to one end of the rotating shaft via gear transmission. During operation, by swinging the tabletop at a small angle, the material to be cast in the mold is evenly filled into the mold cavity, improving the casting quality.

[0027] As a specific implementation method for convenient mold handling, both the front mold 4 and the rear mold 5 are equipped with lifting parts. The lifting parts are preferably handles set at the top of the mold or crossbars set on the left and right sides of the mold.

[0028] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gravity casting apparatus, comprising a front mold base and a rear mold base arranged opposite to each other, wherein a front mold and a rear mold are respectively provided on opposite sides of the front mold base and the rear mold base, and the front mold base and the rear mold base are movable relative to each other back and forth, and are equipped with a mold closing power source, characterized in that: The front mold and the rear mold are connected to the front mold base and the rear mold base respectively by plugging, and the plugging direction is from top to bottom.

2. The gravity casting equipment as described in claim 1, characterized in that: Both the front mold base and the rear mold base are provided with left and right slot plates arranged opposite each other. The left and right slot plates cooperate with each other to form a mold slot, and the mold is equipped with a downward limiting structure.

3. The gravity casting equipment as described in claim 1, characterized in that: The front mold and the rear mold are respectively connected to the front mold base and the rear mold base by dovetail groove and trapezoidal guide rail, and the mold is equipped with a downward limiting structure.

4. The gravity casting equipment as described in claim 1, characterized in that: The front mold base and the rear mold base are set on the casting platform. The casting platform is also provided with a fixing plate. Several guide pillars are provided between the fixing plate and the front mold base. The corresponding rear mold base can be moved back and forth and is set on the guide pillars. The rear mold base is also connected to the mold closing power source for transmission.

5. The gravity casting equipment as described in claim 4, characterized in that: The mold closing power source is a first cylinder, which is mounted on a fixed plate, and the drive shaft of the first cylinder is connected to the rear mold base for transmission.

6. The gravity casting equipment as described in claim 2, characterized in that: The left and right slot plates on the front mold base are each equipped with a swing block that can strike the mold. The corresponding front mold base is equipped with a second cylinder, which is driven by the swing block.

7. The gravity casting equipment as described in claim 1, characterized in that: The front mold is equipped with an automatic core-pulling mechanism.

8. The gravity casting equipment as described in claim 7, characterized in that: The automatic core-pulling mechanism includes a mandrel, a return spring, and a third cylinder. One end of the mandrel is movable and passes through and is limited on the front mold. The return spring is sleeved on the mandrel and is limited between the other end of the mandrel and the front mold. The third cylinder is in transmission cooperation with the other end of the mandrel.

9. The gravity casting equipment as described in claim 4, characterized in that: The casting table includes a table surface and a support. The table surface is rotatably mounted on the support with a rotation angle of less than 90 degrees. The table surface is equipped with a rotation power source.

10. The gravity casting equipment as described in claim 1, characterized in that: Both the front mold and the rear mold are equipped with lifting parts.

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