Casting mold for gearbox shell of agricultural machine

Abstract

The utility model discloses an agricultural machinery gearbox shell casting mold which comprises a lower mold body, the lower mold body is connected with an upper mold body through a plurality of guide columns, the upper mold body is connected to the outer walls of the guide columns in a sliding mode, and one side of the lower mold body and one side of the upper mold body are jointly and fixedly provided with a pushing device. Two clamping grooves, two placement grooves and a mold groove are symmetrically formed in the upper end face of the lower mold, a second sliding groove is formed in the inner side wall of each clamping groove, a driving device is arranged in each clamping groove, and the output end of each driving device extends into the corresponding second sliding groove; and two moving grooves are symmetrically formed in the bottom wall of the mold groove. The ejection device, the driving device and the clamping block are arranged to be matched with separation and combination of the upper mold and the lower mold, a cast part can be rapidly separated from the mold groove, and the part ejected by the ejection device can be rapidly separated from the interior of the mold by arranging the pushing device.

Description

Technical Field

[0001] The utility model relates to the technical field of gearbox manufacturing, in particular to a casting mould for a gearbox housing of an agricultural machinery. Background Art

[0002] Casting refers to the process of pouring liquid metal into a mold cavity that matches the shape and size of the part, and waiting for it to cool and solidify to obtain a blank or part. In the manufacturing process of agricultural machinery such as tractors, harvesters, and seeders, many parts are made through casting processes, such as the gearbox housing. When the gearbox housing is produced by casting, the molten metal is first injected into the mold cavity. After the molten metal cools and solidifies, the mold is separated and retreated, and finally the cast product is taken out.

[0003] However, in the process of removing the product, due to the influence of thermal expansion and contraction, the casting will shrink and deform to a certain extent after cooling, causing some parts with complex shapes to be stuck in the mold cavity and difficult to remove. To this end, the present application proposes a casting mold for an agricultural machinery gearbox housing in order to solve the above problem. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes a casting mould for a gearbox housing of an agricultural machinery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A casting mold for a gearbox housing of an agricultural machinery comprises a lower mold, wherein the lower mold is connected to an upper mold via a plurality of guide columns, and the upper mold is slidably connected to the outer walls of the plurality of guide columns, a pushing device is fixedly mounted on one side of the lower mold and the upper mold, and the upper end surface of the lower mold is symmetrically provided with two card slots, two placement slots and a mold slot, a second slide slot is provided on the inner side wall of each of the card slots, a driving device is provided in each of the card slots, and an output end of the driving device extends to a second slide slot corresponding in position, and two movable slots are symmetrically provided on the bottom wall of the mold slot, each of the movable slots is provided with an ejection device, and the output end of the ejection device is fixedly connected to the output end of the driving device.

[0007] Preferably, two clamping blocks are symmetrically mounted on the lower end surface of the upper mold, and a pouring port is provided on the upper end surface of the upper mold.

[0008] Preferably, a guide groove is provided on one side of the lower mold.

[0009] Preferably, the pushing device includes two fixed blocks, and the two fixed blocks are respectively installed on one side of the upper mold and the lower mold, a first sliding groove is opened on one side of each of the fixed blocks, a first slider is slidably clamped in each of the first sliding grooves, a rotating ball is rotatably clamped at one end of each of the first sliders, a support plate is fixedly connected to each of the rotating balls, and the two support plates are connected by a rotating shaft.

[0010] Preferably, mounting blocks are fixedly mounted on both sides of one of the support plates, and a push rod is fixedly mounted on one side of each of the mounting blocks.

[0011] Preferably, each of the driving devices comprises a plurality of springs, and the plurality of springs are fixedly mounted in the slots, a second slider is fixedly mounted on one end of the plurality of springs, and the second slider is slidably mounted in the slots corresponding in position.

[0012] Preferably, a connection block is fixedly mounted on one side of the second sliding block, and the connection block is slidably clamped in a second sliding groove at a corresponding position, and the output end of the ejection device is fixedly connected to the connection block.

[0013] Preferably, each of the ejection devices comprises a connecting column, and the connecting column is fixedly connected to one end of the connecting block, the upper end surface of the connecting column is fixedly connected to the ejection block, and the ejection block is in contact with the inner wall of the movable groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting the ejector device, the driving device and the clamping block, when the upper mold and the lower mold are engaged, the driving device is compressed by the clamping block so that the output end of the ejector device fits with the bottom wall of the mold groove without affecting the casting of the parts. When the upper mold and the lower mold are separated, the driving device can drive the ejector device to eject the parts in the mold groove, so that the parts and the mold groove are quickly separated.

[0016] 2. By setting up a pushing device and utilizing the separation and combination of the upper mold and the lower mold, when the ejection device ejects the part from the mold slot, the part can be pushed out of the mold slot through the pushing device, thereby realizing the rapid separation and removal of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a casting mold for a gearbox housing of an agricultural machinery proposed in the utility model;

[0018] Figure 2 This is a schematic diagram of a driving device portion of a casting mold for a gearbox housing of an agricultural machinery proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of the fixed block portion of a casting mold for a gearbox housing of an agricultural machinery proposed by the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the interior of a lower mold of a casting mold for a gearbox housing of an agricultural machinery.

[0021] In the figure: 1 lower mold, 2 upper mold, 3 guide column, 4 pouring port, 5 guide groove, 6 clamping groove, 7 connecting block, 8 fixed block, 9 clamping block, 10 support plate, 11 push rod, 12 mounting block, 13 rotating shaft, 14 first slide groove, 15 slider, 16 rotating ball, 17 second slide groove, 18 moving groove, 19 top block, 20 spring, 21 second slider. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 A casting mold for a gearbox housing of an agricultural machinery comprises a lower mold 1, which is connected to an upper mold 2 through a plurality of guide columns 3, and the upper mold 2 is slidably connected to the outer wall of the plurality of guide columns 3. A pushing device is fixedly installed on one side of the lower mold 1 and the upper mold 2. Two card slots 6, two placement slots and a mold slot are symmetrically provided on the upper end surface of the lower mold 1. A guide slot 5 is provided on one side of the lower mold 1. It should be noted that after the parts are processed, the formed parts can be withdrawn from the mold through the guide slot 5.

[0024] A second slide groove 17 is provided on the inner side wall of each slot 6, a driving device is provided in each slot 6, and the output end of the driving device extends to the second slide groove 17 at the corresponding position, two movable grooves 18 are symmetrically provided on the bottom wall of the mold groove, an ejection device is provided in each movable groove 18, and the output end of the ejection device is fixedly connected to the output end of the driving device, two blocks 9 are symmetrically installed on the lower end surface of the upper mold 2, and a pouring port 4 is provided on the upper end surface of the upper mold 2. It should be noted that: the molten metal can be poured into the mold through the pouring port 4.

[0025] The pushing device includes two fixed blocks 8, and the two fixed blocks 8 are respectively installed on one side of the upper mold 2 and the lower mold 1. A first slide groove 14 is opened on one side of each fixed block 8, and a first slider 15 is slidably clamped in each first slide groove 14. A rotating ball 16 is rotatably clamped at one end of each first slider 15, and each rotating ball 16 is fixedly connected to a support plate 10. The two support plates 10 are connected by a rotating shaft 13. Both sides of one of the support plates 10 are fixedly installed with mounting blocks 12, and one side of each mounting block 12 is fixedly installed with a push rod 11. It should be noted that the cast parts can be ejected into the guide groove 5 by the push rod 11.

[0026] Each driving device includes a plurality of springs 20, and the plurality of springs 20 are fixedly installed in the card slot 6, a second slider 21 is fixedly installed on one end of the plurality of springs 20, and the second slider 21 is slidably carded in the card slot 6 at a corresponding position, a connecting block 7 is fixedly installed on one side of the second slider 21, and the connecting block 7 is slidably carded in the second slide slot 17 at a corresponding position, and the output end of the ejection device is fixedly connected to the connecting block 7. It should be noted that: the output end of the ejection device is fixedly connected to the connecting block 7, and the movement of the connecting block 7 can be used to drive the ejection device to move synchronously.

[0027] Each ejection device includes a connecting column, and the connecting column is fixedly connected to one end of the connecting block 7 , and the upper end surface of the connecting column is fixedly connected to a ejection block 19 , and the ejection block 19 is in contact with the inner wall of the movable groove 18 .

[0028] When the utility model is in use, the upper mold 2 is first engaged with the lower mold 1. When the upper mold 2 is engaged with the lower mold 1, the two blocks 9 fixedly installed on the lower end surface of the upper mold 2 will abut against the second slider 21 in the slot 6 on the lower mold 1. Then the two blocks 9 will compress the second slider 21, and the second slider 21 will compress the multiple springs 20 downward. At the same time, when the second slider 21 moves, the second slider 21 will drive the connecting column to move through the connecting block 7, and the connecting column will drive the top block 19 to move in the moving groove 18. At this time, the upper end surface of the top block 19 will fit with the bottom wall of the mold groove.

[0029] When the upper mold 2 approaches the lower mold 1, the fixed blocks 8 fixedly installed on one side of the upper mold 2 and the lower mold 1 will move closer to each other. At the same time, the first sliders 15 fixed in the first slide grooves 14 will move away from each other. At this time, the first sliders 15 will drive the two support plates 10 to move by rotating the balls 16. At the same time, the two support plates 10 will rotate through the rotating shafts 13 until the upper mold 2 is engaged with the lower mold 1. At the same time, the mounting blocks 12 fixedly installed on both sides of one of the support plates 10 will drive the two push rods 11 to move synchronously until the two push rods 11 are engaged in the corresponding placement grooves.

[0030] When the part is cast, the upper mold 2 is separated from the lower mold 1. At this time, the spring 20 is reset, and the spring 20 drives the second slider 21 to move. At the same time, the second slider 21 drives the connecting block 7 to move. At this time, the connecting block 7 pushes the top block 19 out of the moving groove 18 through the connecting column. At this time, the cast part will be pushed out of the mold groove by the top block 19.

[0031] When pouring is completed, the upper mold 2 and the lower mold 1 move away from each other, and the two support plates 10 are displaced by the first slider 15. At this time, the two support plates 10 are rotated again by the rotating shaft 13, and the two ends of the two support plates 10 will move away from each other. At this time, the two push rods 11 fixedly installed on one of the support plates 10 will move synchronously with the movement of the support plates 10 until they collide with the cast parts. At this time, the push rods 11 will push the parts into the mold groove through the guide groove 5.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A casting mold for a gearbox housing of an agricultural machinery, characterized in that: The invention comprises a lower mold (1), wherein the lower mold (1) is connected to an upper mold (2) via a plurality of guide columns (3), the upper mold (2) is slidably connected to the outer wall of the plurality of guide columns (3), a pushing device is fixedly mounted on one side of the lower mold (1) and the upper mold (2), the upper end surface of the lower mold (1) is symmetrically provided with two card slots (6), two placement slots and one mold slot, the inner side wall of each of the card slots (6) is provided with a second slide slot (17), each of the card slots (6) is provided with a driving device, the output end of the driving device extends to the second slide slot (17) at a corresponding position, the bottom wall of the mold slot is symmetrically provided with two movable slots (18), each of the movable slots (18) is provided with an ejection device, and the output end of the ejection device is fixedly connected to the output end of the driving device.

2. The casting mold for a gearbox housing of an agricultural machinery according to claim 1, characterized in that: Two clamping blocks (9) are symmetrically mounted on the lower end surface of the upper mold (2), and a pouring port (4) is provided on the upper end surface of the upper mold (2).

3. The casting mold for a gearbox housing of an agricultural machinery according to claim 1, characterized in that: A guide groove (5) is provided on one side of the lower mold (1).

4. The casting mold for a gearbox housing of an agricultural machinery according to claim 1, characterized in that: The pushing device comprises two fixed blocks (8), and the two fixed blocks (8) are respectively mounted on one side of the upper mold (2) and the lower mold (1), and each of the fixed blocks (8) is provided with a first slide groove (14) on one side, and a first slider (15) is slidably mounted in each of the first slide grooves (14), and a rotating ball (16) is rotatably mounted at one end of each of the first sliders (15), and each of the rotating balls (16) is fixedly connected to a support plate (10), and the two support plates (10) are connected via a rotating shaft (13).

5. The casting mold for a gearbox housing of an agricultural machinery according to claim 4, characterized in that: Mounting blocks (12) are fixedly mounted on both sides of one of the support plates (10), and a push rod (11) is fixedly mounted on one side of each of the mounting blocks (12).

6. The casting mold for a gearbox housing of an agricultural machinery according to claim 1, characterized in that: Each of the driving devices comprises a plurality of springs (20), the plurality of springs (20) being fixedly mounted in the slots (6), a second slider (21) being fixedly mounted on one end of the plurality of springs (20), and the second slider (21) being slidably mounted in the slots (6) at corresponding positions.

7. The casting mold for a gearbox housing of an agricultural machinery according to claim 6, characterized in that: A connecting block (7) is fixedly mounted on one side of the second sliding block (21); the connecting block (7) is slidably locked in a second sliding groove (17) at a corresponding position; and the output end of the ejection device is fixedly connected to the connecting block (7).

8. The casting mold for a gearbox housing of an agricultural machinery according to claim 7, characterized in that: Each ejection device comprises a connection column, the connection column is fixedly connected to one end of the connection block (7), the upper end surface of the connection column is fixedly connected to a ejection block (19), and the ejection block (19) is in contact with the inner wall of the movable groove (18).

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