Ejection mechanism automatic locking device for low-pressure casting and forging composite casting machine

Abstract

The utility model discloses an ejection mechanism automatic locking device for a low-pressure casting and forging composite casting machine. The ejection mechanism automatic locking device comprises an ejection driving mechanism, an ejection plate, a sliding oil cylinder, a clamping transition plate, a push plate connecting rod and a mold ejection rod push plate, the ejection plate is connected with the ejection driving mechanism, and the sliding oil cylinder is fixed on the ejection plate; a through hole is formed in the ejector plate, the lower end of the push plate connecting rod is connected with a mold ejector rod push plate, the upper end of the push plate connecting rod can penetrate through the through hole, and a first limiting part is further arranged on the push plate connecting rod; a clamping transition plate is arranged above the ejector plate, and a second limiting part matched with the first limiting part is arranged on the clamping transition plate; the clamping transition plate is connected with the sliding oil cylinder and can be driven by the sliding oil cylinder to reciprocate, and the clamping transition plate has a locking state in which the first limiting part is matched with the second limiting part and a loosening state in which the first limiting part is separated from the second limiting part. According to the utility model, clamping and loosening of the push plate and the ejector plate of the fixed mold can be realized quickly, efficiently and simply and conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-pressure casting, and particularly relates to an automatic locking device for an ejection mechanism of a low-pressure casting and forging composite casting machine. Background Art

[0002] During the casting process, in order to demold the products cast and formed in the mold, several ejector rods fixed on the mold ejector plate are required to push together. The mold ejector plate should move together with the ejection plate and should be connected to the ejection plate first. The traditional connection method is the nut fixing method. Due to structural reasons, this method is particularly inconvenient and more time-consuming and laborious. Summary of the Utility Model

[0003] The problem solved by the utility model: In order to overcome the defect that the operation of fixing the mold ejector plate and the ejection plate by the existing screw and nut fastening method is troublesome and time-consuming and laborious, an automatic locking device for the ejection mechanism of a low-pressure casting and forging composite casting machine is provided.

[0004] To achieve the above object, the technical solution adopted by the utility model is: An automatic locking device for an ejection mechanism of a low-pressure casting and forging composite casting machine mainly includes the following parts:

[0005] The ejection plate 4 is connected to the ejection driving mechanism, and the sliding oil cylinder 5 is fixed on the ejection plate 4.

[0006] A through hole is provided on the ejection plate 4. The lower end of the ejector plate connecting rod 7 is connected to the mold ejector rod plate 8, and the upper end of the ejector plate connecting rod 7 can pass through the through hole. A first limiting portion is further provided on the ejector plate connecting rod 7.

[0007] A clamping transition plate 6 is provided above the ejection plate 4, and a second limiting portion cooperating with the first limiting portion is provided on the clamping transition plate 6.

[0008] The clamping transition plate 6 is in transmission connection with the sliding oil cylinder 5 and can be driven by the sliding oil cylinder 5 to perform reciprocating motion. The clamping transition plate 6 includes a locking state in which the first limiting portion cooperates with the second limiting portion, and a loosening state in which the first limiting portion is disengaged from the second limiting portion.

[0009] Further, the ejection driving mechanism includes an ejection oil cylinder 1 and an ejection piston rod 2 driven and controlled by the ejection oil cylinder 1. The ejection piston rod 2 is connected to the ejection plate 4 through an ejection piston rod snap ring 3.

[0010] Further, the ejection plate 4 has a round hole with the same outer diameter as the ejector plate connecting rod 7, and the ejection plate 4 is sleeved on the ejector plate connecting rod 7 through the round hole.

[0011] Further, a small-diameter shoulder, that is, the first limiting portion, is provided on the part of the ejector plate connecting rod 7 protruding from the ejection plate 4.

[0012] Further, the clamping transition plate 6 is provided with a gourd-shaped hole, which includes a large hole and a small hole. The diameter of the large hole is the same as that of the round hole on the ejector plate 4, and the diameter of the small hole is the same as that of the small-diameter shoulder of the push plate connecting rod 7, that is, the second limiting part.

[0013] Further, the clamping transition plate 6 also has a rectangular hole. The length of the rectangular hole is the same as that of the sliding piston rod 9, and the width is matched with the sliding oil cylinder 5. The sliding oil cylinder 5 drives the clamping transition plate 6 to move by driving the sliding piston rod 9.

[0014] Further, it also includes a push plate clamping limit switch 10 triggered in the locked state; a push plate release limit switch 11 triggered in the released state. The push plate connecting rod 7 and the mold ejector rod push plate 8 are connected into a whole by a fastening method. When the outer circle of the push plate connecting rod 7 enters the round hole on the ejector plate 4 and is in plane contact, the sliding oil cylinder 5 is operated to act, and the sliding piston rod 9 pushes the clamping transition plate 6 to move. When the specified position is reached, the push plate clamping limit switch 10 sends a signal. At this time, the shoulder of the push plate connecting rod 7 is stuck into the small hole of the gourd-shaped hole, and the mold ejector rod push plate 8 realizes automatic clamping.

[0015] Operate the sliding oil cylinder 5 to act in the reverse direction. The sliding piston rod 9 pushes the clamping transition plate 6 to move in the reverse direction. When the specified position is reached, the push plate release limit switch 11 sends a signal. At this time, the shoulder of the push plate connecting rod 7 enters the large hole of the gourd-shaped hole, and the mold ejector rod push plate 8 realizes automatic release and can be freely taken out in the vertical direction.

[0016] Further, the push plate clamping limit switch 10 and the push plate release limit switch 11 are respectively arranged on the front and rear sides of the clamping transition plate, and notch openings are provided at the positions of the clamping transition plate corresponding to the push plate clamping limit switch 10 and the push plate release limit switch 11.

[0017] Further, there are two sliding oil cylinders arranged side by side on the left and right, and the axial direction of the gourd-shaped hole is the same as the moving direction of the clamping transition plate.

[0018] Further, there are two ejecting driving mechanisms arranged side by side on the left and right; 4 push plate connecting rods are provided.

[0019] The utility model has the following beneficial effects: It can quickly and efficiently realize the clamping and release of the fixed mold push plate and the ejector plate with simple operation. Description of the Drawings

[0020] Figure 1 It is a sectional view taken along the A-A direction in the locked state of the ejecting mechanism automatic locking device for a low-pressure casting and forging composite casting machine according to an embodiment of the utility model.

[0021] Figure 2 It is a sectional view taken along the C-C direction in the locked state of the ejecting mechanism automatic locking device for a low-pressure casting and forging composite casting machine according to an embodiment of the utility model.

[0022] Figure 3 This is a B - B cross - sectional view in the released state of the automatic locking device for the ejection mechanism of a low - pressure casting and forging compound casting machine according to an embodiment of the present utility model.

[0023] Figure 4 This is a top - view in the D - D direction of the automatic locking device for the ejection mechanism of a low - pressure casting and forging compound casting machine in the released state according to an embodiment of the present utility model.

[0024] In the figure, 1 is the ejection oil cylinder, 2 is the ejection piston rod, 3 is the ejection piston rod snap ring, 4 is the ejection plate, 5 is the sliding oil cylinder, 6 is the clamping transition plate, 7 is the push - plate connecting rod, 8 is the mold ejector rod push - plate, 9 is the sliding piston rod, 10 is the push - plate clamping limit switch, and 11 is the push - plate releasing limit switch. Detailed implementation manners

[0025] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings.

[0026] The automatic locking device for the ejection mechanism of the low - pressure casting and forging compound casting machine in this embodiment mainly includes the following parts: ejection oil cylinder 1; ejection piston rod 2; ejection piston rod snap ring 3; ejection plate 4; sliding oil cylinder 5; clamping transition plate 6; push - plate connecting rod 7; mold ejector rod push - plate 8; sliding piston rod 9.

[0027] The ejection piston rod 2 driven and controlled by the ejection oil cylinder 1 is connected to the ejection plate 4 through the ejection piston rod snap ring 3. The ejection plate 4 is connected to the ejection driving mechanism, and the sliding oil cylinder 5 is fixed on the ejection plate 4.

[0028] There are four round holes on the ejection plate 4 with the same outer diameter as the outer diameter of the push - plate connecting rod 7. The ejection plate 4 is sleeved on the push - plate connecting rod 7 through the round holes. The lower end of the push - plate connecting rod 7 is connected to the mold ejector rod push - plate 8, and the upper end of the push - plate connecting rod 7 can pass through the through - hole. A small - diameter shoulder is provided on the part of the push - plate connecting rod 7 protruding from the ejection plate 4. The clamping transition plate 6 is provided with a gourd - shaped hole, which includes a large hole and a small hole. The diameter of the large hole is the same as the diameter of the round hole on the ejection plate 4, and the diameter of the small hole is the same as the diameter of the small - diameter shoulder of the push - plate connecting rod 7.

[0029] The clamping transition plate 6 is connected to the sliding oil cylinder piston rod 9 and can be driven by the sliding oil cylinder 5 through driving the sliding piston rod 9 to perform reciprocating motion. The clamping transition plate 6 includes a locking state where the small hole cooperates with the small - diameter shoulder and a released state where the small hole is disengaged from the small - diameter shoulder.

[0030] The clamping transition plate 6 also has rectangular holes. The length of the rectangular holes is the same as that of the sliding piston rod 9, and the width is matched with the sliding oil cylinder 5. The sliding oil cylinder drives the clamping transition plate 6 to move by driving the sliding piston rod 9. There are two sliding oil cylinders arranged side by side on the left and right, and the axial direction of the gourd-shaped hole is the same as the moving direction of the clamping transition plate.

[0031] It also includes a push plate clamping limit switch 10 triggered in the locked state; a push plate release limit switch 11 triggered in the released state. The push plate clamping limit switch 10 and the push plate release limit switch 11 are respectively arranged on the front and rear sides of the clamping transition plate. The positions of the clamping transition plate 6 corresponding to the push plate clamping limit switch 10 and the push plate release limit switch 11 are provided with notches.

[0032] The action process of the ejection mechanism automatic locking device for the low-pressure casting and forging composite casting machine is as follows:

[0033] 1. The ejection piston rod 2 is connected to the ejection plate 4 through an ejection piston rod snap ring 3. The sliding oil cylinder 5 is fixed on the ejection plate 4.

[0034] 2. There are four round holes on the ejection plate 4 with the same outer diameter as the push plate connecting rod 7. There is a small-diameter shoulder on the push plate connecting rod 7.

[0035] 3. There are four gourd-shaped holes on the clamping transition plate 6. Each gourd-shaped hole contains a large hole and a small hole. The diameter of the large hole is the same as that of the round hole on the ejection plate 4, and the diameter of the small hole is the same as that of the small-diameter shoulder of the push plate connecting rod 7.

[0036] 4. There are also four rectangular holes on the clamping transition plate 6. The length of the rectangular holes is the same as that of the sliding piston rod 9, and the width is matched with the sliding oil cylinder 5.

[0037] 5. As Figure 1-2 shown, the four push plate connecting rods 7 are connected to the die ejector rod push plate 8 in a fastening manner to form a whole. When the outer circle of the push plate connecting rod 7 enters the round hole on the ejection plate 4 and is in plane contact, operate the sliding oil cylinder 5 to act. The sliding piston rod 9 pushes the clamping transition plate 6 to move. When the limit switch 10 sends a signal at the specified position, the shoulder of the push plate connecting rod 7 is stuck into the small hole of the gourd-shaped hole, and the die ejector rod push plate 8 realizes automatic clamping.

[0038] 6. As Figure 3-4 shown, operate the sliding oil cylinder 5 to act in the reverse direction. The sliding piston rod 9 pushes the clamping transition plate 6 to move in the reverse direction. When the limit switch 11 sends a signal after reaching the specified position, the shoulder of the push plate connecting rod 7 enters the large hole of the gourd-shaped hole, and the die ejector rod push plate 8 realizes automatic release and can be freely taken out in the vertical direction.

[0039] The above embodiments are only to illustrate the technical idea of the present utility model, and the protection scope of the present utility model cannot be limited thereby. Any modification made on the basis of the technical solution in accordance with the technical idea proposed by the present invention falls within the protection scope of the present utility model.

Claims

1. An automatic locking device for the ejection mechanism of a low-pressure casting and forging composite casting machine, characterized in that: It includes an ejection driving mechanism, an ejection plate, a sliding oil cylinder, a clamping transition plate, a push plate connecting rod, and a mold ejector rod push plate; The ejection plate is connected to the ejection driving mechanism, and the sliding oil cylinder is fixed on the ejection plate; A through hole is provided on the ejection plate. The lower end of the push plate connecting rod is connected to the mold ejector rod push plate, the upper end of the push plate connecting rod can pass through the through hole, and a first limiting portion is also provided on the push plate connecting rod; A clamping transition plate is provided above the ejection plate, and a second limiting portion cooperating with the first limiting portion is provided on the clamping transition plate; The clamping transition plate is in transmission connection with the sliding oil cylinder and can be driven by the sliding oil cylinder to perform reciprocating motion. The clamping transition plate includes a locking state in which the first limiting portion cooperates with the second limiting portion, and a release state in which the first limiting portion is disengaged from the second limiting portion.

2. The automatic locking device for the ejection mechanism of the low-pressure casting and forging composite casting machine according to claim 1, characterized in that: The ejection driving mechanism includes an ejection oil cylinder and an ejection piston rod driven and controlled by the ejection oil cylinder. The ejection piston rod is connected to the ejection plate through an ejection piston rod snap ring.

3. The automatic locking device for the ejection mechanism of the low-pressure casting and forging composite casting machine according to claim 1, wherein: There is a round hole on the ejection plate that is the same as the outer diameter of the push plate connecting rod. The ejection plate is sleeved on the push plate connecting rod through the round hole.

4. The ejector mechanism automatic locking device for a low-pressure casting and forging composite casting machine according to claim 1 or 3, characterized in that: A small-diameter shoulder, that is, the first limiting portion, is provided on the part of the push plate connecting rod protruding from the ejection plate.

5. The ejector mechanism automatic locking device for a low-pressure casting and forging composite casting machine according to claim 4, characterized in that: A gourd-shaped hole is provided on the clamping transition plate. The gourd-shaped hole includes a large hole and a small hole. The diameter of the large hole is the same as that of the round hole on the ejection plate, and the diameter of the small hole is the same as that of the small-diameter shoulder of the push plate connecting rod, that is, the second limiting portion.

6. The automatic locking device for the ejection mechanism of the low-pressure casting and forging composite casting machine according to claim 1, characterized in that: There is also a rectangular hole on the clamping transition plate. The length of the rectangular hole is the same as that of the sliding piston rod, and the width is matched with the sliding oil cylinder. The sliding oil cylinder drives the clamping transition plate to move by driving the sliding piston rod.

7. The automatic locking device for the ejection mechanism of the low-pressure casting and forging compound casting machine according to claim 1, wherein: It also includes a push plate clamping limit switch triggered in the locking state; a push plate release limit switch triggered in the release state.

8. The ejecting mechanism automatic locking device for the low-pressure casting and forging composite casting machine according to claim 1, characterized in that: The push plate clamping limit switch and the push plate release limit switch are respectively arranged on the front and rear sides of the clamping transition plate, and notch openings are provided at the positions of the clamping transition plate corresponding to the push plate clamping limit switch and the push plate release limit switch.

9. The ejector mechanism automatic locking device for a low-pressure casting and forging composite casting machine according to claim 1, characterized in that: There are two sliding oil cylinders arranged side by side left and right; the axial direction of the gourd-shaped hole is the same as the movement direction of the clamping transition plate.

10. The automatic locking device for the ejection mechanism of the low-pressure casting and forging composite casting machine according to claim 1, characterized in that: There are two ejection driving mechanisms arranged side by side left and right; 4 push plate connecting rods are provided.

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