Pull-out mechanism of female die ejection mechanism

Abstract

The invention provides a pull-out mechanism of a female mold ejection mechanism, which comprises a pull rod arranged in a female mold plate in a penetrating manner, and one end of the pull rod is connected with the female mold ejection mechanism; the swinging pull hook is rotationally connected with the pull rod, the swinging pull hook is provided with a clamping hook and a shifting end, and the shifting end is provided with a guide inclined plane; the drag hook is fixed in the male template and used for being hooked with the clamping hook; the stop block is fixed on the female mold plate, and the stop block is provided with a shifting inclined surface and is used for shifting the swinging pull hook after the female mold is ejected by the female mold ejection mechanism, so that the clamping hook is separated from the pull hook; and the elastic positioning assembly is fixed on the female mold plate and is used for propping against the shifting end in the ejection process of the female mold ejection mechanism and pushing the swinging pull hook to reset in the mold closing process. The mechanical pull-out structure is used for pulling out the female mold ejection mechanism during mold opening, the mold can be suitable for a high-temperature mold or a die-casting mold, the stability is good, the mold repairing frequency is reduced, the working efficiency is improved, and the production cost is saved.

Description

[Technical Field]

[0001] This invention relates to the field of mold mechanism technology, and in particular to a pull-out mechanism for a female mold ejection mechanism. [Background Technology]

[0002] When the mold side of a plastic or die-cast product has undercuts and high ribs, it is generally necessary to use a mold angled pin and a mold ejection mechanism for shaping and ejection. In existing molds, the ejection force of the mold ejection mechanism is usually provided by a spring or a spring combined with a return rod equipped with a urethane opening and closing device. Figure 1 A schematic diagram of an existing female mold ejection mechanism is shown. The ejection plate 12 of the female mold ejection mechanism is connected to one end of the return rod 15. The end of the return rod 15 away from the ejection plate 12 is connected to the urethane opening and closing device 14. The urethane opening and closing device 14 is located in the male mold core 13. When the male mold plate 10 and the female mold plate 11 are opened, the ejection plate 12 remains stationary with the male mold part under the pushing force of the ejection spring 16 and the pulling force of the urethane opening and closing device 14, while the female mold part opens. The female mold ejection mechanism performs an ejection action. After the ejection is completed, the urethane opening and closing device 14 disengages from the male mold core 13, and the male and female molds continue to open. However, in high-temperature molds and die-casting molds, the heat resistance of the urethane opener 14 is insufficient and it is easy to be damaged. Relying solely on the ejector spring 16 to provide ejection force can easily lead to problems such as jamming of the ejector mechanism or tearing of the product in molds with large adhesion forces in the mother mold. Stability cannot be guaranteed, and mold repair after removal from the machine affects production efficiency and increases production costs.

[0003] In view of this, the present invention provides a pull-out mechanism for a female mold ejection mechanism to solve the above-mentioned technical problems. [Summary of the Invention]

[0004] The technical problem this invention aims to solve is: existing mold ejection mechanisms utilize urethane openers to provide pulling force, but their stability cannot be guaranteed. In high-temperature molds and die-casting molds, damage to the urethane openers can easily cause the mold ejection mechanism to jam or damage the product, affecting production efficiency and increasing production costs. This invention provides a pull-out mechanism for the mold ejection mechanism to solve the above problems.

[0005] The solution to the technical problem of this invention is: a pull-out mechanism for a female mold ejection mechanism, applied in a mold, used to pull out the female mold ejection mechanism when the mold is opened, comprising:

[0006] A tie rod, one end of which is connected to the female mold ejection mechanism, and the other end of which extends toward the male mold and passes through the female mold plate;

[0007] A swing hook is rotatably connected to the end of the pull rod away from the female mold ejection mechanism. The end of the swing hook away from the female mold plate is provided with a hook, and the other end has a toggle end with a guide slope.

[0008] A hook is fixed in the male template, and the hook is matched with the hook of the swing hook and engages with the hook.

[0009] A stop block is provided on the side of the swing hook with a guide slope and is fixed to the mother template. The stop block has a push-off slope at the end near the swing hook. When the mother template ejection mechanism ejects, the push-off slope slides into contact with the guide slope to push the swing hook to rotate, so that the hook disengages from the hook.

[0010] An elastic positioning component is fixed to the mother mold plate and located on the side of the swing hook away from the mold core. It is used to hold the toggle end during the ejection process of the mother mold ejection mechanism and to push the swing hook to reset during the mold closing process, so that the latch engages with the hook.

[0011] Preferably, the female mold ejection mechanism is disposed in the groove of the female mold plate and includes an ejection plate, an ejector pin, and a slanted pin. One end of the ejector pin and the slanted pin is fixed to the ejection plate, and one end of the pull rod is connected to the ejection plate. This end has a straight surface to prevent the pull rod from rotating and to enhance the connection stability.

[0012] Preferably, an auxiliary ejection spring is provided between the ejector plate and the hot runner plate, the auxiliary ejection spring being used to assist the ejector plate in ejecting during mold opening.

[0013] Preferably, the swing hook is disposed in the U-shaped groove at the end of the pull rod away from the female mold ejection mechanism, and the swing hook is rotatably connected to the pull rod through a rotating shaft.

[0014] Preferably, the elastic positioning component includes a spring pin, an elastic element, and a fixing block. The fixing block is fixed to the mother template. The limiting end of the spring pin is connected to the elastic element and is disposed in the limiting hole in the fixing block. The abutting end of the spring pin extends out of the fixing block and moves telescopically relative to the fixing block.

[0015] The beneficial effects of this invention are that it utilizes a mechanical pull-out structure to pull out the ejection mechanism of the mother mold during mold opening, which can be applied to high-temperature molds or die-casting molds, has good stability, reduces the frequency of mold repair, and improves work efficiency while saving production costs. [Attached Image Description]

[0016] Figure 1 This is a structural schematic diagram of an existing female mold ejection mechanism pull-out mechanism.

[0017] Figure 2 This is a schematic diagram of the structure of the pull-out mechanism of the female mold ejection mechanism of the present invention in the mold.

[0018] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the pull-out mechanism of a female mold ejection mechanism according to the present invention.

Detailed Implementation Methods

[0020] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the embodiments of the present invention and their accompanying drawings.

[0021] This invention provides a pull-out mechanism for a female mold ejection mechanism, applied in a mold, for pulling out the female mold ejection mechanism during mold opening, comprising:

[0022] Tie rod 2, one end of which is connected to the female mold ejection mechanism, and the other end extends toward the male mold and passes through the female mold plate 100;

[0023] The swing hook 3 is rotatably connected to the end of the pull rod 2 away from the female mold ejection mechanism. The end of the swing hook 3 away from the female mold plate 100 is provided with a hook 31, and the other end has a toggle end 30 with a guide slope.

[0024] Hook 4 is fixed in the male template 130. The hook 4 is matched with the hook 31 of the swing hook 3 and is engaged with the hook 31.

[0025] The stop block 5 is located on the side of the swing hook 3 with the guide slope and is fixed to the mother template 100. The stop block 5 has a push-off slope at the end near the swing hook 3. When the mother mold ejection mechanism ejects, the push-off slope slides into contact with the guide slope to push the swing hook 3 to rotate, so that the hook 31 disengages from the hook 4.

[0026] The elastic positioning component 6 is fixed to the mother template 100 and is located on the side of the swing hook 3 away from the mold core. It is used to hold the push end 30 during the ejection process of the mother mold ejection mechanism and push the swing hook 3 to reset during the mold closing process, so that the latch 31 engages with the hook 4.

[0027] The female mold ejection mechanism is located in the groove of the female mold plate 100 and includes an ejection plate 120, an ejector pin, and a slanted pin. One end of the ejector pin and the slanted pin is fixed to the ejection plate 120. One end of the pull rod 2 is connected to the ejection plate 120. The end of the pull rod 2 connected to the ejection plate 120 has a straight surface to prevent the pull rod 2 from rotating and to enhance the connection stability.

[0028] An auxiliary ejection spring 160 is provided between the ejector plate 120 and the hot runner plate 16. The auxiliary ejection spring 160 is used to assist the ejector plate 120 in ejecting when the mold is opened.

[0029] The swing hook 3 is located in the U-shaped groove 20 at the end of the pull rod 2 away from the female mold ejection mechanism, and the swing hook 3 is rotatably connected to the pull rod 2 via a rotating shaft 21.

[0030] The elastic positioning component 6 includes a spring pin 62, an elastic element 61, and a fixing block 60. The fixing block 60 is fixed to the mother template 100. The limiting end of the spring pin 62 is connected to the elastic element 61 and is disposed in the limiting hole in the fixing block 60. The abutting end of the spring pin 62 extends out of the fixing block 60 and moves telescopically relative to the fixing block 60.

[0031] The working process of the present invention is as follows: when the mold is closed, the spring pin 62 pushes the swing hook 3 towards the mold core under the action of the elastic element 61 return force, so that the swing hook 3 engages with the hook 4. At this time, the stop block 5 and the spring pin 62 respectively abut against both sides of the swing hook 3.

[0032] When the mold is opened, the female mold plate 100 and the male mold plate 130 gradually open. Since the swing hook 3 is engaged with the pull hook 4 at this time, the pull rod 2, the female mold ejection mechanism and the male mold plate 130 are relatively stationary. The female mold plate 100 moves away from the male mold plate 130 relative to the female mold ejection mechanism. The female mold ejection mechanism performs an ejection action. When the stop block 5 fixed on the female mold plate 100 moves to the point where its actuating inclined surface slides into contact with the guide inclined surface of the swing hook actuating end 30, the actuating inclined surface presses against the guide inclined surface, causing the stop block 5 to actuate the swing hook 3 to rotate around the rotating shaft 21. The swing hook 3 disengages from the pull hook 4. At this time, the female mold ejection mechanism completes the ejection action and maintains the ejection state under the action of the auxiliary ejection spring 160. During the rotation of the swing hook 3, the spring pin 62 is pushed to continue compressing the elastic element 61. The mold continues to open between the female mold plate 100 and the male mold plate 130 until the mold opening is completed.

[0033] When the mold is closed again, the pull rod 2 is pressed and reset by the male template 130, the swing hook 3 rotates under the push of the spring pin 62 to re-engage with the pull hook 4 and reset, and the female mold ejection mechanism resets with the pull rod 2.

[0034] The beneficial effects of this invention are that it utilizes a mechanical pull-out structure to pull out the ejection mechanism of the mother mold during mold opening, which can be applied to high-temperature molds or die-casting molds, has good stability, reduces the frequency of mold repair, and improves work efficiency while saving production costs.

[0035] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A pull-out mechanism for a female mold ejection mechanism, applied in a mold, for pulling out the female mold ejection mechanism during mold opening, characterized in that, include: A tie rod, one end of which is connected to the female mold ejection mechanism, and the other end of which extends toward the male mold and passes through the female mold plate; A swing hook is rotatably connected to the end of the pull rod away from the female mold ejection mechanism. The end of the swing hook away from the female mold plate is provided with a hook, and the other end has a toggle end with a guide slope. A hook is fixed in the male template, and the hook is matched with the hook of the swing hook and engages with the hook. A stop block is provided on the side of the swing hook with a guide slope and is fixed to the mother template. The stop block has a push-off slope at the end near the swing hook. When the mother template ejection mechanism ejects, the push-off slope slides into contact with the guide slope to push the swing hook to rotate, so that the hook disengages from the hook. An elastic positioning component is fixed to the mother mold plate and located on the side of the swing hook away from the mold core. It is used to hold the toggle end during the ejection process of the mother mold ejection mechanism and to push the swing hook to reset during the mold closing process, so that the latch engages with the hook.

2. The pull-out mechanism of the female mold ejection mechanism as described in claim 1, characterized in that: The female mold ejection mechanism is located in the groove of the female mold plate and includes an ejection plate, an ejector pin, and a slanted pin. One end of the ejector pin and the slanted pin is fixed to the ejection plate, and one end of the pull rod is connected to the ejection plate. This end has a straight surface to prevent the pull rod from rotating and to enhance the connection stability.

3. The pull-out mechanism of the female mold ejection mechanism as described in claim 2, characterized in that: An auxiliary ejection spring is provided between the ejector plate and the hot runner plate. The auxiliary ejection spring is used to assist the ejector plate in ejecting when the mold is opened.

4. The pull-out mechanism of the female mold ejection mechanism as described in claim 1, characterized in that: The swing hook is located in the U-shaped groove at the end of the pull rod away from the female mold ejection mechanism, and the swing hook is rotatably connected to the pull rod through a rotating shaft.

5. The pull-out mechanism of the female mold ejection mechanism as described in claim 1, characterized in that: The elastic positioning component includes a spring pin, an elastic element, and a fixing block. The fixing block is fixed to the mother template. The limiting end of the spring pin is connected to the elastic element and is located in the limiting hole in the fixing block. The abutting end of the spring pin extends out of the fixing block and moves telescopically relative to the fixing block.

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