Special device for taking loose piece after casting of high-voltage conductor casting

Abstract

The invention discloses a special device for taking a loose piece after casting of a high-voltage conductor casting. The special device comprises a positioning module and a pressing module positioned right above the positioning module, the positioning module comprises a bottom plate; a positioning base for positioning the lower end of the casting is arranged in the middle of the bottom plate; the positioning base comprises a front side wall, a rear side wall, a left side wall and a right side wall, and the front side wall, the rear side wall, the left side wall and the right side wall of the positioning base define an open groove capable of containing the middle of the lower end of a casting on a bottom plate. The inner side faces of the four side walls of the open groove are inclined faces matched with the middle of the lower end of the casting in shape. The pressing module comprises an upper connecting plate, and pressing blocks in one-to-one correspondence with upper movable blocks of the casting are arranged at the lower end of the upper connecting plate; the two ends of the pressing block extend downwards to form pressing heads in butt joint with the movable blocks, and V-shaped open grooves corresponding to the movable blocks are formed in the bottoms of the pressing heads. And uniform stress of the loose piece is ensured, the loose piece is taken out stably, and the service life of the metal loose piece is well prolonged. Meanwhile, the casting quality is guaranteed, and the labor intensity of operators is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a special device for removing live blocks of high-voltage conductor castings after casting. Background Art

[0002] High-voltage conductor castings have extremely thick walls and are not allowed to have pinhole defects in the castings. To ensure the casting quality, they cannot be formed with sand cores, but can only be formed with metal loose blocks. Since the loose block is partially blocked by the lower mold in the cavity, the loose block can only be taken out after the mold is opened, so it cannot be extracted using a cylinder. The existing methods for demolding loose blocks in casting models mainly include manual knocking and crane-assisted live block extraction. The manual knocking and extraction method is particularly time-consuming and labor-intensive during operation, and the labor intensity of the operator is extremely high. Often, the removal of a live block requires repeated knocking and shaking for dozens of times. If the surface quality of the live block is poor, a lot of time is required to remove the live block, and the labor efficiency is extremely low. In addition, the casting is not easy to place and may cause injuries or scalding to the operator. Moreover, manual knocking can only be done on one side, and the force cannot be applied to the center of the live block. First, it is easy to damage the live block, causing damage to the live block and making it unusable for a long time. Second, it is easy to damage or even deform the casting. The crane-assisted live block removal method is suitable for the case where the live block is located on the upper surface of the sand mold or sand core and the demolding ring is leaking. This method requires crane resources and has a small application range. The model live block is easily damaged, which affects the service life of the model live block. At present, there is no particularly efficient and convenient device to solve the problem of removing live blocks from high-voltage conductor castings. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art, thereby providing a special device for removing live blocks after casting of high-voltage conductor castings, ensuring that the live blocks are evenly stressed and removed smoothly, thereby better extending the service life of the metal live blocks.

[0004] A special device for removing live pieces of high-voltage conductor castings after casting, comprising a positioning module and a pressing module located directly above the positioning module; The positioning module comprises a bottom plate, and a positioning base for positioning the lower end of the casting is provided in the middle of the bottom plate; The positioning base comprises a front side wall, a rear side wall, a left side wall and a right side wall, and the front side wall, the rear side wall, the left side wall and the right side wall of the positioning base are combined on the bottom plate to form an open groove that can accommodate the middle part of the lower end of the casting; The inner side surfaces of the four side walls of the open groove are inclined surfaces matching the outer shape of the middle part of the lower end of the casting; The pressing and taking module comprises an upper connecting plate, and a pressing block corresponding to the upper movable block of the casting is provided at the lower end of the upper connecting plate; Both ends of the pressing block extend downwardly to form pressing heads that are butted against the movable block, and the bottom of the pressing head is provided with a V-shaped opening groove corresponding to the movable block.

[0005] It also includes a driving device which can drive the connecting plate to vertically lift and lower. The driving device is fixed on the frame and connected to the upper end of the connecting plate.

[0006] The driving device is a pneumatic cylinder or an oil cylinder.

[0007] When the connecting plate presses the movable block downward, the upper groove wall of the V-shaped opening groove is flush with the upper side wall of the movable block, and the rear groove wall of the V-shaped opening groove is flush with the rear side wall of the movable block.

[0008] A through hole is provided in the middle of the upper connecting plate to give way to the central sprue of the casting.

[0009] Two positioning columns are erected on the bottom plate, and the two positioning columns are symmetrically arranged on both sides of the positioning base.

[0010] The middle parts of the left side wall and the right side wall are concave with a clearance gap.

[0011] The front side wall is consistent in height with the rear side wall, the left side wall is consistent in height with the right side wall, and the height of the front side wall is greater than that of the right side wall.

[0012] The bottom of the V-shaped opening groove extends upward to form a clearance groove for making way for the inner gate of the casting.

[0013] Compared with the prior art, the present invention adopts mold opening equipment to press out the live block, the lower part is made of the positioning part according to the shape of the casting pouring system, and the upper part is made of the pressing block according to the shape of the exposed part of the live block. The casting is placed on the positioning body, and the equipment drives the pressing block downward to press out the live block. The live block is subjected to force at the center of the product hole, and the force for pressing out the live block is at the center of the live block, so the live block will not be crushed or the casting will be damaged.

[0014] The present invention greatly reduces the labor intensity of the live block taking operation process and improves the production efficiency.

[0015] The present invention can ensure that the movable block is evenly stressed and taken out smoothly, thus effectively extending the service life of the metal movable block.

[0016] The invention has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 This is the working status diagram. DETAILED DESCRIPTION

[0018] Figure 1-4In the embodiment of the present invention, the device comprises a positioning module for a casting 8 and a pressing module for pressing out a live block, the pressing module is located directly above the positioning module, the positioning module comprises a bottom plate 1, a positioning base for positioning the middle part of the bottom end of the casting 8 is provided in the middle of the bottom plate 1, the positioning base is an open groove which is surrounded by a front side wall 6, a rear side wall, a left side wall and a right side wall 7 and can accommodate the middle part of the lower end of the casting 8, the inner side surfaces of the four side walls of the open groove are inclined surfaces which match the outer shape of the middle part of the lower end of the casting 8, the front side wall 6 is consistent with the rear side wall in height, the left side wall is consistent with the right side wall 7 in height, the front side wall 6 is greater than the right side wall 7 in height, the front side wall 6 and the middle part of the left side wall are concave with a making way notch for making way for the casting 8, two positioning columns 2 are erected on the bottom plate 1, and the two positioning columns 2 are symmetrically arranged on both sides of the positioning base. The pressing module is driven to rise and fall by a driving device to press the loose block in the casting. The driving device is fixed on the frame and connected to the upper end of the connecting plate 4 of the pressing module. The driving device is a cylinder or an oil cylinder. The pressing module includes an upper connecting plate 4. The middle of the upper connecting plate 4 has a through hole 12 for making way for the central sprue of the casting. The lower end of the upper connecting plate 4 has a pressing block 3 corresponding to the loose block 9 on the casting 8. The two ends of the pressing block extend downward with a pressing head that docks with the loose block 9. The bottom of the pressing head has a V-shaped opening groove corresponding to the loose block 9. When the connecting plate 4 presses the loose block 9 downward, the upper groove wall 10 of the V-shaped opening groove is flush with the upper side wall 91 of the loose block 9, and the rear groove wall 11 of the V-shaped opening groove is flush with the rear side wall 92 of the loose block 9.

[0019] Figure 3 In the middle, a V-shaped opening groove bottom extends upward to have a make-way groove 13 for making way for the ingates on the casting, so as to prevent the force from acting on the ingates on the casting and causing the pressed live block to be unbalanced.

[0020] The present invention adopts mold opening equipment to press out the live block, the lower part is made into a positioning part according to the shape of the casting pouring system, the upper part is made into a pressing block according to the shape of the exposed part of the live block, the casting is placed on the positioning body, and the equipment drives the pressing block downward to press out the live block. The live block is subjected to force at the center of the product hole, and the force of pressing out the live block is at the center of the live block, so the live block will not be crushed or the casting will be damaged.

Claims

1. A special device for removing live pieces of high-voltage conductor castings after casting, characterized in that: It includes a positioning module and a pressing module located directly above the positioning module; The positioning module comprises a base plate (1), and a positioning base at the lower end of the positioning casting (8) is provided in the middle of the base plate (1); The positioning base comprises a front side wall (6), a rear side wall, a left side wall and a right side wall (7), and the front side wall (6), the rear side wall, the left side wall and the right side wall (7) of the positioning base are combined on the bottom plate (1) to form an open groove capable of accommodating the middle part of the lower end of the casting (8); The inner side surfaces of the four side walls of the open groove are inclined surfaces matching the outer shape of the middle portion of the lower end of the casting (8); The pressing die set comprises an upper connecting plate (4), and a pressing block (3) corresponding to an upper movable block (9) of the casting (8) is provided at the lower end of the upper connecting plate (4); Both ends of the pressing block extend downwardly to form pressing heads that are butt-jointed with the movable block (9), and the bottom of the pressing head has a V-shaped opening groove corresponding to the movable block (9).

2. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: It also includes a driving device capable of driving the connecting plate (4) to vertically lift and lower. The driving device is fixed on the frame and connected to the upper end of the connecting plate (4).

3. The device for removing live pieces of high-voltage conductor castings according to claim 2 is characterized in that: The driving device is a pneumatic cylinder or an oil cylinder.

4. A device for removing live pieces of high-voltage conductor castings after casting according to claim 1 or 2, characterized in that: When the connecting plate (4) presses the movable block (9) downward, the upper groove wall (10) of the V-shaped opening groove is flush with the upper side wall (91) of the movable block (9), and the rear groove wall (11) of the V-shaped opening groove is flush with the rear side wall (92) of the movable block (9).

5. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: The middle part of the upper connecting plate (4) is provided with a through hole (12) for accommodating the central sprue of the casting.

6. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: Two positioning columns (2) are erected on the bottom plate (1), and the two positioning columns (2) are symmetrically arranged on both sides of the positioning base.

7. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: The left side wall and the right side wall (7) are concave in the middle to form a clearance notch.

8. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: The front side wall (6) is of the same height as the rear side wall, the left side wall is of the same height as the right side wall (7), and the height of the front side wall (6) is greater than the height of the right side wall (7).

9. The device for removing live pieces of high-voltage conductor castings according to claim 1 is characterized in that: A clearance groove (13) for making way for the upper inner gate of the casting extends upward from the bottom of the V-shaped opening groove.

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