A counter-striking device for mold casting

Abstract

The utility model relates to the technical field of mould casting, disclose a kind of reverse top device for mould casting, including base, and the reverse top component is equipped on the upper end of base, and the reverse top component includes the pin seat being equipped in the middle part of the upper end of base, and the upper end of pin seat is equipped with docking groove, and docking seat is inserted in docking groove, and the outer wall of the upper end of pin seat is equipped with four groups of limit rods mutually symmetrical. By starting motor, two groups of ball screws are close to each other, under the driving of adjusting rod, adjusting rod pushes reverse top rod and slides upwards along the outer wall of pin seat and limit rod, reverse top rod slides upwards along drawing pin, until reverse top rod exports mould located in the upper end of drawing pin, that is, it can complete demoulding, in the process that adjusting rod pushes reverse top rod and slides upwards along pin seat, adjusting rod drives sliding sleeve and slides along the outer wall of sliding rod, to increase the stability in the moving process of reverse top rod, so that reverse top rod can smoothly slide upwards along pin seat and limit rod, avoid the problem of being pulled in the demoulding process of mould and drawing pin.

Description

Technical Field

[0001] This utility model relates to the field of mold casting technology, and in particular to a reverse ejector device for mold casting. Background Technology

[0002] A reverse ejector device for mold casting is a specialized structure used in mold casting or stamping processes to achieve product demolding or unloading through reverse ejection force. Its core function is to provide a force opposite to the direction of mold movement, reducing the clamping force or friction between the product and the mold, ensuring smooth product release. Typical applications include: the electric push rod reverse ejector mold of Dalian Yaming Automotive Parts, which achieves product ejection through a built-in ejection assembly; the slider reverse ejector plate structure of Dalian Daxian Gaomu, which uses a linked reverse ejector rod to reduce the undercut clamping force of injection molded parts; and the reverse ejector in fine blanking dies, which uses reverse force to suppress part bending and improve the quality of the sheared surface. This device can significantly improve demolding efficiency and reduce processing costs.

[0003] However, some molds, after being formed, have mold holes that are too long corresponding to the casting pins. If demolding is done directly through the casting pins, it can easily lead to demolding difficulties and product damage. Utility Model Content

[0004] In view of the fact that some molds, after being formed, have mold holes corresponding to casting pins that are too long, and if demolding is carried out directly through casting pins, it is easy to cause demolding difficulties and product damage, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a reverse ejection device for mold casting, including a base, a reverse ejection assembly at the upper end of the base, a pin seat at the middle of the upper end of the base, a docking groove at the upper end of the pin seat, a docking seat inserted in the docking groove, four sets of mutually symmetrical limiting rods on the outer wall of the upper end of the pin seat, a reverse ejection rod sleeved on the outer wall of the pin seat, a casting pin at the upper end of the docking seat, a mold at the upper end of the casting pin, a drive assembly at the upper end of the base, the drive assembly including a fixed plate at the upper end of the base, a motor fixedly mounted on one side of the outer wall of the fixed plate, a bidirectional lead screw at the output end of the motor, two sets of symmetrical sliding rods fixedly mounted on the symmetrical ends of the fixed plate and the bidirectional lead screw, two sets of mutually symmetrical ball screw sleeves sleeved on the outer wall of the bidirectional lead screw, sliding sleeves sleeved on the outer walls of both sets of sliding rods, an adjusting rod at the upper end of the ball screw sleeve and the sliding sleeve, and a fixing block at the upper end of the adjusting rod.

[0006] As a preferred embodiment of the anti-top device for mold casting of this utility model, the mating seat is movably inserted into the mating groove, the mating seat overlaps the upper end of the pin seat, the limiting rod is set in an L shape, the lower end of the limiting rod is hinged to the outer wall of the upper end of the pin seat, and the upper end of the limiting rod is in contact with and parallel to the upper end of the mating seat.

[0007] As a preferred embodiment of the anti-ejection device for mold casting of this utility model, the anti-ejection rod is movably sleeved on the upper end of the outer wall of the pin seat, the inner wall of the lower end of the anti-ejection rod is in contact with the outer wall of the limiting rod, and the casting pin moves through the upper end of the anti-ejection rod.

[0008] As a preferred embodiment of the anti-top device for mold casting of this utility model, the bidirectional lead screw is rotatably inserted into the middle of the pin seat.

[0009] As a preferred embodiment of the anti-ejection device for mold casting of this utility model, the sliding sleeve is movably sleeved on the outer wall of the sliding rod, the fixed block is fixedly connected to the outer wall of the anti-ejection rod, and the lower end of the adjusting rod is hinged to the ball screw sleeve and the sliding sleeve respectively.

[0010] As a preferred embodiment of the anti-jacking device for mold casting of this utility model, the outer wall of the fixing block is threaded with a bolt, and the upper end of the adjusting rod is provided with a through hole, through which the bolt moves.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects: In this invention, by starting the motor, two sets of ball screw sleeves approach each other. Driven by the adjusting rod, the adjusting rod pushes the anti-ejector rod to slide upward along the outer wall of the pin seat and the limiting rod. The anti-ejector rod slides upward along the casting pin until the anti-ejector rod pulls out the mold located at the upper end of the casting pin, thus completing the demolding. During the process of the adjusting rod pushing the anti-ejector rod upward along the pin seat, the adjusting rod drives the sliding sleeve to slide along the outer wall of the sliding rod, thereby increasing the stability of the anti-ejector rod during its movement. This allows the anti-ejector rod to slide smoothly upward along the pin seat and the limiting rod, avoiding the problem of tearing during the demolding process of the mold and the casting pin.

[0012] 2. In this utility model, the lower end of the replaced cast pin is reinserted into the mating groove. The limiting rod is rotated upwards until its upper end is in contact with the upper end of the mating seat. The limiting rod can restrict the mating seat in the mating groove. Then, the anti-ejector rod is inserted from top to bottom along the cast pin and fitted onto the outer wall of the pin seat. The bolt is screwed in again, allowing the bolt to move through the through hole at the upper end of the adjusting rod, completing the connection between the adjusting rod and the fixing block. When the limiting rod is located in the inner wall of the anti-ejector rod, the limiting rod cannot rotate. The limiting rod always restricts the mating seat in the mating groove. That is to say, during the process of the anti-ejector rod sliding up and down along the pin seat, the cast pin is stably set at the upper end of the pin seat, thereby avoiding the problem of the cast pin shaking and causing tearing during demolding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the anti-ejection device for mold casting of this utility model; Figure 2 This is a three-dimensional cross-sectional view of the anti-ejection component of the anti-ejection device for mold casting of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the pin seat of the anti-ejection device for mold casting of this utility model; Figure 4 This is a three-dimensional cross-sectional view of the anti-ejector rod of the anti-ejector device for mold casting of this utility model; Figure 5 This is a three-dimensional structural diagram of the drive component of the anti-ejection device for mold casting of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Base; 2. Anti-top assembly; 21. Pin seat; 22. Connecting groove; 23. Connecting seat; 24. Limiting rod; 25. Anti-top rod; 26. Cast-out pin; 3. Mold; 4. Drive assembly; 41. Fixing plate; 42. Motor; 43. Two-way lead screw; 44. Ball screw sleeve; 45. Sliding rod; 46. Sliding sleeve; 47. Adjusting rod; 48. Fixing block; 49. Bolt. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example

[0016] Reference Figures 1-5 This is the first embodiment of the present invention, providing a reverse ejection device for mold casting, including a base 1, an reverse ejection assembly 2 at the upper end of the base 1, a pin seat 21 located at the middle of the upper end of the base 1, a mating groove 22 opened at the upper end of the pin seat 21, a mating seat 23 inserted into the mating groove 22, four sets of mutually symmetrical limiting rods 24 provided on the outer wall of the upper end of the pin seat 21, a reverse ejection rod 25 sleeved on the outer wall of the pin seat 21, a casting and drawing pin 26 provided at the upper end of the mating seat 23, a mold 3 provided at the upper end of the casting and drawing pin 26, and a mold 3 provided at the upper end of the base 1. The drive assembly 4 includes a fixed plate 41 located on the upper end of the base 1. A motor 42 is fixedly mounted on the outer wall of one side of the fixed plate 41. A bidirectional lead screw 43 is provided at the output end of the motor 42. Two sets of symmetrical sliding rods 45 are fixedly mounted on the symmetrical ends of the fixed plate 41 and the bidirectional lead screw 43. Two sets of symmetrical ball screw sleeves 44 are sleeved on the outer wall of the bidirectional lead screw 43. Sliding sleeves 46 are sleeved on the outer walls of both sets of sliding rods 45. Adjusting rods 47 are provided at the upper ends of the ball screw sleeves 44 and the sliding sleeves 46. A fixing block 48 is provided at the upper end of the adjusting rods 47.

[0017] The docking seat 23 is movably inserted into the docking groove 22. The docking seat 23 overlaps the upper end of the pin seat 21. The limiting rod 24 is set in an L shape. The lower end of the limiting rod 24 is hinged to the upper outer wall of the pin seat 21. The upper end of the limiting rod 24 and the upper end of the docking seat 23 are in contact and parallel to each other.

[0018] The anti-push rod 25 is movably sleeved on the upper end of the outer wall of the pin seat 21. The lower inner wall of the anti-push rod 25 is in contact with the outer wall of the limiting rod 24. The cast-drawn pin 26 moves through the upper end of the anti-push rod 25.

[0019] The double-acting lead screw 43 is rotatably inserted into the middle of the pin seat 21.

[0020] The sliding sleeve 46 is movably sleeved on the outer wall of the sliding rod 45. The fixing block 48 and the outer wall of the anti-top rod 25 are fixedly connected. The lower end of the adjusting rod 47 is hinged to the ball screw sleeve 44 and the sliding sleeve 46 respectively.

[0021] The outer wall of the fixing block 48 is threaded with a bolt 49, and the upper end of the adjusting rod 47 is provided with a through hole, through which the bolt 49 moves.

[0022] When it is necessary to demold the mold 3 corresponding to the upper end of the casting pin 26, the motor 42 can be started. The motor 42 drives the double-acting lead screw 43 to rotate. The double-acting lead screw 43 drives the two sets of ball screw sleeves 44 to move closer to each other. Under the action of the adjusting rod 47, the adjusting rod 47 pushes the anti-ejector 25 to slide upward along the outer wall of the pin seat 21 and the limiting rod 24. The anti-ejector 25 slides upward along the casting pin 26 until the anti-ejector 25 pulls out the mold 3 located at the upper end of the casting pin 26, thus completing the demolding. During the process of the adjusting rod 47 pushing the anti-ejector 25 to slide upward along the pin seat 21, the adjusting rod 47 drives the sliding sleeve 46 to slide along the outer wall of the sliding rod 45, thereby increasing the stability of the anti-ejector 25 during the movement process. This allows the anti-ejector 25 to slide smoothly upward along the pin seat 21 and the limiting rod 24, avoiding the problem of tearing during the demolding process of the mold 3 and the casting pin 26.

[0023] When it is necessary to replace the casting pin 26 to suit different molds 3, the bolt 49 can be unscrewed from the fixing block 48 and removed from the through hole at the upper end of the adjusting rod 47, thus separating the fixing block 48 and the adjusting rod 47. Then, slide the anti-push rod 25 upward along the pin seat 21 to remove the lower end of the anti-push rod 25 from the upper end of the casting pin 26, thus completing the disassembly of the anti-push rod 25. Next, rotate the limiting rod 24 in the direction of separation so that the upper end of the limiting rod 24 moves away from the upper end of the mating seat 23. Then, lift the mating seat 23 upward along the mating groove 22 to remove the mating seat 23 from the mating groove 22, thus completing the disassembly of the casting pin 26. Reinsert the lower end mating seat 23 of the replacement casting pin 26 corresponding to the mold 3 into the mating groove 22, and rotate the limiting rod 24 upward. 4. Rotate the upper end of the limiting rod 24 until it is in contact with the upper end of the docking seat 23. The limiting rod 24 can restrict the docking seat 23 in the docking groove 22. Then, insert the anti-ejector rod 25 from top to bottom along the cast pin 26 and put the anti-ejector rod 25 on the outer wall of the pin seat 21. Re-screw the bolt 49 so that the bolt 49 moves through the through hole opened at the upper end of the adjusting rod 47, completing the docking between the adjusting rod 47 and the fixing block 48. When the limiting rod 24 is in the inner wall of the anti-ejector rod 25, the limiting rod 24 cannot rotate. The limiting rod 24 always restricts the docking seat 23 in the docking groove 22. That is to say, during the process of the anti-ejector rod 25 sliding up and down along the pin seat 21, the cast pin 26 is stably set at the upper end of the pin seat 21, thereby avoiding the problem of the cast pin 26 shaking and causing tearing during demolding.

[0024] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A counter-ejection device for mold casting, comprising a base (1), characterized in that: The base (1) is provided with a counter-top assembly (2) at its upper end. The counter-top assembly (2) includes a pin seat (21) located in the middle of the upper end of the base (1). A mating groove (22) is provided at the upper end of the pin seat (21). A mating seat (23) is inserted in the mating groove (22). Four sets of mutually symmetrical limit rods (24) are provided on the outer wall of the upper end of the pin seat (21). A counter-top rod (25) is sleeved on the outer wall of the pin seat (21). A casting pin (26) is provided at the upper end of the mating seat (23). A mold (3) is provided at the upper end of the casting pin (26). The base (1) is provided with a drive assembly (4). The drive assembly (4) includes a pin seat (21) located in the middle of the upper end of the base (1). A mating groove (22) is provided in the middle of the upper end of the pin seat (21). A mating seat (23) is inserted in the middle of the middle of the pin (22). A mating seat (23) is provided in the middle of the middle of the pin (1). A mating groove (22) is provided in the middle of the middle of the pin (21). A mating groove (23) is inserted in the middle of the middle of the pin (2 ...3). A mating groove (24) is provided in the middle of the middle of the pin (23). A mating groove (24) is inserted in the middle of the middle of the pin (23). A mating groove (25) is inserted in the middle of the middle of the pin (23). A mating groove (24) is inserted in the middle of the middle of the pin (23). A mating groove The base (1) has a fixed plate (41) at the top. A motor (42) is fixed on one side of the outer wall of the fixed plate (41). A two-way lead screw (43) is provided at the output end of the motor (42). Two sets of symmetrical sliding rods (45) are fixed at the symmetrical ends of the fixed plate (41) and the two-way lead screw (43). Two sets of symmetrical ball screw sleeves (44) are fitted on the outer wall of the two-way lead screw (43). Sliding sleeves (46) are fitted on the outer walls of the two sets of sliding rods (45). An adjusting rod (47) is provided at the upper end of the ball screw sleeve (44) and the sliding sleeve (46). A fixing block (48) is provided at the upper end of the adjusting rod (47).

2. The anti-ejection device for mold casting according to claim 1, characterized in that: The docking seat (23) is movably inserted into the docking groove (22). The docking seat (23) overlaps the upper end of the pin seat (21). The limiting rod (24) is set in an L shape. The lower end of the limiting rod (24) is hinged to the outer wall of the upper end of the pin seat (21). The upper end of the limiting rod (24) and the upper end of the docking seat (23) are in contact and parallel to each other.

3. The anti-ejection device for mold casting according to claim 1, characterized in that: The anti-push rod (25) is movably sleeved on the upper end of the outer wall of the pin seat (21). The inner wall of the lower end of the anti-push rod (25) is in contact with the outer wall of the limiting rod (24). The cast-drawn pin (26) moves through the upper end of the anti-push rod (25).

4. The anti-ejection device for mold casting according to claim 1, characterized in that: The two-way lead screw (43) is rotatably inserted into the middle of the pin seat (21).

5. The anti-ejection device for mold casting according to claim 1, characterized in that: The sliding sleeve (46) is movably sleeved on the outer wall of the sliding rod (45), the fixed block (48) and the outer wall of the anti-top rod (25) are fixedly connected, and the lower end of the adjusting rod (47) is hinged to the ball screw sleeve (44) and the sliding sleeve (46) respectively.

6. The anti-ejection device for mold casting according to claim 1, characterized in that: The outer wall of the fixing block (48) is threaded with a bolt (49), and the upper end of the adjusting rod (47) is provided with a through hole, through which the bolt (49) moves.

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