Die for preventing ejector pin from being damaged by ejection

Abstract

The utility model relates to a mold for preventing ejection damage of an ejector pin, which comprises a fixed mold, a movable mold and an ejector pin plate arranged on the movable mold, the movable mold is provided with a sliding cavity, the ejector pin plate slides in the sliding cavity, the sliding direction of the ejector pin plate is a direction away from or close to the movable mold, and the movable mold or the ejector pin plate is provided with a mounting area for mounting a travel switch. An externally-hung bracket is arranged on the movable mold or the ejector plate, and when the ejector plate moves, the externally-hung bracket is far away from or close to the mounting area; the externally-hung support comprises an installation rod and a trigger rod connected to the installation rod, the end of the trigger rod and the end of the installation rod are connected in an included angle mode, and when the externally-hung support is close to the installation area, the travel switch is located in the included angle between the end of the trigger rod and the end of the installation rod. The injection molding machine has the effect of preventing the injection molding machine from pressing and damaging the mold when the injection molding machine performs mold closing under the condition that the ejector plate is not reset.

Description

TECHNICAL FIELD

[0001] The application relates to the field of mold technology, in particular to a mold capable of preventing damage of a top pin. BACKGROUND

[0002] A pulsator washing machine is a kind of washing machine, which is generally divided into two types of double-cylinder and full-automatic single-barrel, and the working principle is that the pulsator installed at the bottom of the washing barrel rotates in both directions to drive the clothes to continuously turn up and down and left and right, so that the clothes and the barrel wall are gently rubbed in the water to achieve the effect of stain removal and cleaning under the action of the detergent.

[0003] The pulsator cover is an important part of the pulsator washing machine, and when the mold is used to produce the pulsator cover, the molded pulsator cover is ejected from the mold by a top pin plate (the top pin plate is provided with a top pin for ejecting the finished product), but the top pin plate may be slow to reset after a period of work, and the injection molding machine continues to close the mold according to the preset interval time, so that the mold may be damaged if the top pin plate is not fully reset before the next mold closing, which needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the situation that the mold is damaged when the injection molding machine closes the mold before the top pin plate is reset, the application provides a mold capable of preventing damage of a top pin.

[0005] The application provides a mold capable of preventing damage of a top pin, which adopts the following technical scheme:

[0006] The mold capable of preventing damage of a top pin comprises a fixed mold, a movable mold and a top pin plate arranged on the movable mold, the movable mold is provided with a sliding cavity, the top pin plate slides in the sliding cavity, the sliding direction of the top pin plate is the direction away from or close to the movable mold, the movable mold or the top pin plate is provided with a mounting area for mounting a travel switch, and the movable mold or the top pin plate is provided with an externally-hung bracket, when the top pin plate moves, the externally-hung bracket is away from or close to the mounting area.

[0007] By adopting the above technical scheme, the travel switch is mounted on the movable mold or the top pin plate, and the externally-hung bracket is mounted on the movable mold or the top pin plate (the travel switch is mounted on the movable mold, and the externally-hung bracket is mounted on the top pin plate; the travel switch is mounted on the top pin plate, and the externally-hung bracket is mounted on the movable mold), when the externally-hung bracket is close to the mounting area and touches the travel switch, the travel switch sends a signal to make the injection molding machine close the mold, at this time, the top pin plate has been reset, so that the injection molding machine is prevented from closing the mold next time under the condition that the top pin plate is not reset, and the mold is prevented from being damaged.

[0008] Optionally, the external support includes a mounting rod and a trigger rod connected to the mounting rod, an end of the trigger rod and an end of the mounting rod are connected at an included angle, and the travel switch is located in the included angle of the end of the trigger rod and the end of the mounting rod when the external support approaches the mounting area.

[0009] By adopting the technical scheme, the travel switch is located in the included angle of the end of the trigger rod and the end of the mounting rod, so that the external support can approach the mounting area after the ejector plate is reset, thereby enabling the external support to contact and trigger the travel switch.

[0010] Optionally, the movable mold is provided with fixed screws, and two fixed screws are arranged to fix the travel switch on the movable mold.

[0011] By adopting the technical scheme, the fixed screws are arranged to mount the travel switch, and the two fixed screws are arranged to stably fix the travel switch on the movable mold.

[0012] Optionally, the ejector plate includes an upper plate and a lower plate, the upper plate is stacked on the lower plate, mounting screws are arranged on the upper plate and the lower plate, and the mounting screws are arranged to fix the external support on the ejector plate.

[0013] By adopting the technical scheme, the upper plate and the lower plate are arranged, and corresponding ejectors are mounted on the upper plate and the lower plate, the ejector plate moves in the vertical direction under the driving of the driving source, and the mounting screws on the upper plate and the lower plate are arranged to fix the external support on the ejector plate, so that the external support moves simultaneously with the ejector plate.

[0014] Optionally, mounting holes are arranged on the upper plate and the lower plate, and the mounting screws are threadedly connected to the mounting holes after passing through the external support to fix the external support on the ejector plate.

[0015] By adopting the technical scheme, the mounting holes are arranged on the upper plate and the lower plate to connect the mounting screws, so as to fix the external support on the ejector plate, thereby enabling the external support to move simultaneously with the ejector plate.

[0016] Optionally, an adjusting hole is arranged on the external support, the adjusting hole is arranged to pass through the mounting screw, and the mounting screw slides in the adjusting hole.

[0017] By adopting the technical scheme, the adjusting hole is arranged to pass through the screw part of the mounting screw, and the screw part of the mounting screw can slide in the adjusting hole, so that the position of the external support can be adjusted as required, and then the mounting screw is tightened to fix the external support.

[0018] Optionally, a counterbore is arranged on the external support, and the counterbore is arranged to accommodate the cap head of the mounting screw.

[0019] By adopting the technical scheme, the counter-sunk hole is arranged to accommodate the cap head of the mounting screw, and when the outer hanging bracket is fixed, the cap head on the mounting screw abuts against the bottom wall of the counter-sunk hole to fix the outer hanging bracket on the ejector plate.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. Installing the travel switch on the movable mold or the ejector plate (installing the travel switch on the movable mold, and then installing the outer hanging bracket on the ejector plate; installing the travel switch on the ejector plate, and then installing the outer hanging bracket on the movable mold), when the outer hanging bracket approaches the installation area and triggers the travel switch, the travel switch sends a signal to make the injection molding machine close the mold, at this time the ejector plate has been reset, thereby avoiding the injection molding machine to close the mold again under the condition that the ejector plate has not been reset, and preventing the mold from being damaged;

[0022] 2. The travel switch is located within the included angle of the end of the trigger rod and the end of the mounting rod, so that after the ejector plate is reset, the outer hanging bracket can approach the installation area, thereby enabling the outer hanging bracket to contact the travel switch and trigger the travel switch;

[0023] 3. The upper plate and the lower plate are both provided with mounting holes for mounting the connecting screw, thereby fixing the outer hanging bracket on the ejector plate, so that the outer hanging bracket moves simultaneously with the ejector plate;

[0024] 4. The counter-sunk hole is arranged to accommodate the cap head of the mounting screw, and when the outer hanging bracket is fixed, the cap head on the mounting screw abuts against the bottom wall of the counter-sunk hole to fix the outer hanging bracket on the ejector plate. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the mold for preventing the ejector pin from being damaged in the embodiment of the present application.

[0026] Figure 2 is the structure schematic diagram of the travel switch in the embodiment.

[0027] Figure 3 is the structure schematic diagram of the ejector plate in the embodiment.

[0028] Reference signs: 1, fixed mold; 2, movable mold; 3, ejector plate; 31, upper plate; 32, lower plate; 4, travel switch; 5, sliding cavity; 6, fixed screw; 7, mounting screw; 8, mounting hole; 9, adjusting hole; 10, counter-sunk hole; 11, installation area; 12, outer hanging bracket; 121, mounting rod; 122, trigger rod. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0030] The embodiment of the present application discloses a mold for preventing damage of ejector pins. Referring to Figure 1 , the mold for preventing damage of ejector pins comprises a fixed mold 1, a movable mold 2, and an ejector pin plate 3 installed on the movable mold 2. The movable mold 2 is provided with a sliding cavity 5, and the ejector pin plate 3 slides in the sliding cavity 5. The sliding direction of the ejector pin plate 3 is away from or close to the movable mold 2. The movable mold 2 or the ejector pin plate 3 is provided with a mounting area 11 for installing a travel switch 4. The movable mold 2 or the ejector pin plate 3 is provided with an external support 12. When the ejector pin plate 3 moves, the external support 12 is away from or close to the mounting area 11. (The travel switch 4 is installed on the movable mold 2, and the external support 12 is installed on the ejector pin plate 3. The travel switch 4 is installed on the ejector pin plate 3, and the external support 12 is installed on the movable mold 2.)

[0031] Referring to Figure 1 and Figure 2 , the external support 12 comprises a mounting rod 121 and a trigger rod 122 connected to the mounting rod 121. The end of the trigger rod 122 and the end of the mounting rod 121 are connected at an included angle. When the external support 12 is close to the mounting area 11, the travel switch 4 is located in the included angle of the end of the trigger rod 122 and the end of the mounting rod 121.

[0032] Referring to Figure 1 and Figure 2 , the movable mold 2 is provided with a fixed screw 6. Two fixed screws 6 are installed, and the two fixed screws 6 fix the travel switch 4 on the movable mold 2. The ejector pin plate 3 comprises an upper plate 31 and a lower plate 32. The upper plate 31 is stacked on the lower plate 32. The upper plate 31 and the lower plate 32 are both provided with a mounting screw 7. The mounting screw 7 fixes the external support 12 on the ejector pin plate 3. Since the external support 12 is fixed on the ejector pin plate 3, the ejector pin plate 3 will move up and down under the driving of a driving source (which can be an oil cylinder). At this time, the external support 12 moves simultaneously. After the ejector pin plate 3 is reset, the external support 12 moves downward to the original position to trigger the travel switch 4. At this time, the travel switch 4 will send a signal to make the injection molding machine close the mold, so as to effectively avoid the situation that the mold is damaged because the ejector pin plate 3 is not reset before the mold is closed.

[0033] Referring to Figure 2 and Figure 3 , the upper plate 31 and the lower plate 32 (see Figure 1The outer hanging bracket 12 is provided with a mounting hole 8, and the mounting screw 7 is threadedly connected to the mounting hole 8 after passing through the outer hanging bracket 12 to fix the outer hanging bracket 12 on the ejector plate 3. The outer hanging bracket 12 is provided with an adjusting hole 9, and the screw part of the mounting screw 7 passes through the adjusting hole 9 and slides in the adjusting hole 9. The outer hanging bracket 12 is provided with a counter-sunk hole 10, and the cap of the mounting screw 7 is accommodated in the counter-sunk hole 10. When the mounting screw 7 fixes the outer hanging bracket 12 on the ejector plate 3, the cap of the mounting screw 7 abuts against the bottom wall of the counter-sunk hole 10.

[0034] The implementation principle of the mold for preventing the ejection pin from being damaged by the ejection pin is that the travel switch 4 is installed on the movable die 2 or the ejector plate 3, and the outer hanging bracket 12 is installed on the movable die 2 or the ejector plate 3 (the travel switch 4 is installed on the movable die 2, and the outer hanging bracket 12 is installed on the ejector plate 3; the travel switch 4 is installed on the ejector plate 3, and the outer hanging bracket 12 is installed on the movable die 2). When the outer hanging bracket 12 approaches the installation area 11 and touches the travel switch 4, the travel switch 4 sends a signal to make the injection molding machine close, and at this time, the ejector plate 3 has been reset, so that the injection molding machine is prevented from closing for the next time when the ejector plate 3 is not reset, and the mold is prevented from being damaged.

[0035] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A mold for preventing damage by a punch, characterized by: The mould includes fixed mould (1), movable mould (2) and needle plate (3) arranged on movable mould (2), sliding cavity (5) is arranged on movable mould (2), needle plate (3) slides in sliding cavity (5), the sliding direction of needle plate (3) is the direction of moving away or approaching movable mould (2), the installation area (11) for installing travel switch (4) is arranged on movable mould (2) or needle plate (3), the external hanging support (12) is arranged on movable mould (2) or needle plate (3), when needle plate (3) moves, the external hanging support (12) moves away or approaches installation area (11).

2. The mold of claim 1, wherein: The external hanging support (12) includes installation rod (121) and trigger rod (122) connected to installation rod (121), the end of trigger rod (122) and the end of installation rod (121) are connected at an angle, when the external hanging support (12) approaches installation area (11), the travel switch (4) is located in the angle between the end of trigger rod (122) and the end of installation rod (121).

3. The mold of claim 1, wherein: The fixed screw rod (6) is arranged on movable mould (2), the fixed screw rod (6) is provided with two, two fixed screw rods (6) fix travel switch (4) on movable mould (2).

4. The mold of claim 1, wherein: The needle plate (3) includes upper plate (31) and lower plate (32), the upper plate (31) is stacked on the lower plate (32), the installation screw rod (7) is arranged on the upper plate (31) and the lower plate (32), the installation screw rod (7) fixes the external hanging support (12) on the needle plate (3).

5. The mold of claim 4, wherein: The installation hole (8) is formed on the upper plate (31) and the lower plate (32), the installation screw rod (7) is threadedly connected to the installation hole (8) after passing through the external hanging support (12) to fix the external hanging support (12) on the needle plate (3).

6. The mold of claim 5, wherein: The adjusting hole (9) is formed on the external hanging support (12), the adjusting hole (9) is passed through by the installation screw rod (7), and the installation screw rod (7) slides in the adjusting hole (9).

7. The mold of claim 6, wherein: The countersunk hole (10) is formed on the external hanging support (12), and the cap head of the installation screw rod (7) is accommodated in the countersunk hole (10).

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