Seesaw secondary ejection mechanism of mold device and mold device

Abstract

The utility model discloses a secondary ejection mechanism for a seesaw of a mold device and the mold device. The ejection mechanism comprises a first ejector pin, a sliding seat, the seesaw and a first control pin, the first ejector pin is movably arranged on a first template unit of the mold device; the sliding seat is provided with a first sliding groove, and the moving track of the sliding seat at least comprises a first stroke and a middle stroke. The seesaw is provided with a driving end and a driven end, and the driven end of the seesaw is in transmission connection with the first ejector pin; the first control pin is in transmission connection with the driving end of the seesaw, the tail end of the first control pin of the sliding seat located in the first stroke is matched with the first template unit in an abutting mode, the sliding seat slides relative to the first control pin and drives the seesaw to swing, and the seesaw swings and drives the first ejector pin to move. The ejection mechanism has the advantages that the sliding seat drives the first ejector pin to move synchronously in the middle stroke, the sliding seat drives the first ejector pin to move through the seesaw in the first stroke to achieve speed change, the first ejector pin has the speed change in the whole ejection stroke, the production efficiency can be improved, and the ejection effect is improved.

Description

Technical Field

[0001] The utility model relates to a seesaw secondary ejection mechanism of a mold device and a mold device. Background Art

[0002] With the rapid development of technology, many products are produced using mold assemblies to improve production efficiency. These assemblies are typically equipped with an ejector mechanism, which includes a slide and an ejector. The slide is movable in a first direction within a first template unit, while the ejector is movable within the first template unit of the mold assembly, with the inner end of the ejector fixedly mounted to the slide. The movement of the slide drives the ejector to eject the molded product from the mold assembly. The ejector and slide are fixedly mounted together, moving synchronously. Constant movement of the slide results in a constant movement of the ejector, leading to further improvements in ejection efficiency. Utility Model Content

[0003] The utility model provides a seesaw secondary ejection mechanism of a mold device and a mold device, which overcomes the shortcomings of the ejector mechanism of the mold device in the background technology.

[0004] One of the technical solutions adopted by the utility model to solve the technical problem is: the mold device seesaw secondary ejection mechanism includes:

[0005] a first ejector pin movably disposed on a first template unit of the mold device;

[0006] A slide seat is provided with a first slide groove, the slide seat is movable along a first direction and is arranged on the first template unit, and the movable track of the slide seat includes at least a first stroke and an intermediate stroke;

[0007] A seesaw is swingably mounted on the slide, and has a driving end and a driven end, wherein the driven end of the seesaw is drivingly connected to the first ejector pin; and

[0008] A first control pin is movably connected to the first slide groove along the first direction, and is transmission-connected to the driving end of the seesaw. The end of the first control pin of the slide located in the first stroke is abutted against the first template unit. The slide slides relative to the first control pin and drives the seesaw to swing through the transmission connection between the first control pin and the driving end. The seesaw swings and drives the first ejector to move through the transmission connection between the driven end and the first ejector.

[0009] In one embodiment, the distance between the axis of the seesaw and the moving direction of the first control pin is smaller than the distance between the axis of the seesaw and the moving direction of the first ejector.

[0010] In one embodiment, the slide seat further comprises a mounting cavity, the first slide groove is connected to the mounting cavity, and the seesaw is swingably mounted in the mounting cavity of the slide seat;

[0011] The first template unit is provided with a movable cavity having a first inner wall. The slide is movable in the movable cavity along a first direction. The end of the first control pin of the slide located in the first stroke is in abutment with the first inner wall.

[0012] In one embodiment, further comprising:

[0013] The second control pin is transmission-connected to the driving end of the seesaw; the slide is also provided with a second slide groove, and the movable trajectory of the slide also includes a second stroke, and the intermediate stroke is located between the first stroke and the second stroke; the second control pin is movably connected to the second slide groove along the first direction, and the end of the second control pin of the slide located in the second stroke is abutted against the first template unit, and the slide slides relative to the second control pin and drives the seesaw to swing through the transmission connection between the second control pin and the driving end, and the seesaw swings and drives the first ejector to move through the transmission connection between the driven end and the first ejector.

[0014] In one embodiment, the slide further includes a mounting cavity, the seesaw is swingably mounted in the mounting cavity of the slide, the first chute is connected to the mounting cavity, the second chute is connected to the mounting cavity, and the mounting cavity is located between the first chute and the second chute.

[0015] The first template unit is provided with a movable cavity, which has a first inner wall and a second inner wall facing each other. The slide is movably provided in the movable cavity along the first direction; the end of the first control pin of the slide located in the first stroke is abutted against the first inner wall, and the end of the second control pin of the slide located in the second stroke is abutted against the second inner wall.

[0016] In one embodiment, a notch is formed on the distal end surface of the driven end of the seesaw, and the driven end is divided into a first lug and a second lug spaced apart from each other by the notch, and the first lug is provided with a shift fork; the inner end of the first ejector pin is formed into a convex portion, and the first ejector pin passes through the shift fork and the convex portion is located in the notch.

[0017] In one embodiment, the driving end of the seesaw and the inner end of the first control pin are in abutment with each other; the driving end of the seesaw and the inner end of the second control pin are in abutment with each other.

[0018] In one embodiment, a matching groove is recessed on the side wall of the driving end of the seesaw, and the matching groove has a groove wall. The inner end surface of the first control pin matches the side wall and the groove wall of the matching groove.

[0019] In one embodiment: the first sliding groove and the second sliding groove are both configured as stepped grooves with a larger inner portion and a smaller outer portion and include a large hole and a small hole; the first control pin and the second control pin are both configured as stepped structures with a larger inner portion and a smaller outer portion and include a large portion and a small portion; the large portion is adapted to connect to the large hole and the small portion is adapted to connect to the small hole.

[0020] In one embodiment, the method further includes:

[0021] The second ejector is movably provided on the first template unit, and the inner end of the second ejector is transmission-connected to the slide; the transmission connection between the slide and the inner end of the second ejector includes a guide groove provided on the slide and a protrusion fixedly provided on the inner end of the second ejector, and the protrusion is adapted to be connected to the guide groove.

[0022] The second technical solution adopted by the utility model to solve the technical problem is: a mold device, which includes the mold device seesaw secondary ejection mechanism.

[0023] Compared with the background technology, this technical solution has the following advantages:

[0024] The slide drives the first ejector to move synchronously in the middle stroke. In the first stroke, the slide drives the first ejector to move through the seesaw to achieve speed change. Therefore, the first ejector has speed change in the entire ejection stroke, which can improve production efficiency and enhance ejection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a front view of the mold device in the mold closing state according to the specific embodiment.

[0027] Figure 2 3. It is a front view of the mold device in the mold separation state according to a specific embodiment.

[0028] Figure 3 It is a front view of a mold device for ejecting a molded product according to a specific embodiment.

[0029] Figure 4 yes Figure 2 A magnified schematic diagram of .

[0030] Figure 5 yes Figure 3 Enlarged schematic diagram of point B.

[0031] Figure 6 It is a three-dimensional cross-sectional schematic diagram of the ejector mechanism and part of the first template unit in a specific embodiment.

[0032] Figure 7 It is a three-dimensional schematic diagram of the ejector mechanism and the molded product according to a specific embodiment.

[0033] Figure 8 yes Figure 7 A partial enlarged schematic diagram.

[0034] Explanation of reference numerals: first ejector 1, slide 2, seesaw 3, first control pin 4, second control pin 5, second ejector 6, molded product 8; first template unit 71, third slide groove 711, movable cavity 712, fourth slide groove 713, second template unit 72, guide component 73; protrusion 11; mounting cavity 21, first slide groove 22, second slide groove 23, guide slide groove 24; pivot 31, notch 32, shift fork 33, side wall 34, first groove wall 341, second groove wall 342. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 8 The mold device has a seesaw secondary ejection mechanism, including a first ejector pin 1, a slide 2, a seesaw 3, and a first control pin 4. In this embodiment, the mold device includes a first template unit 71 and a second template unit 72. The first template unit 71 and the second template unit 72 are arranged along the upper and lower mold clamping and parting directions. The first template unit 71 is the lower template unit, and the second template unit 72 is the upper template unit. The first direction is the up-down direction (this is used as an example for description below), but is not limited to this. The front-back direction, etc., can also be used as needed.

[0036] The first ejector pin 1 is movably mounted on the first template unit 71 of the mold device. In this specific embodiment, the first ejector pin 1 moves along a first direction, but the present invention is not limited thereto. The first ejector pin 1 may be tilted as needed to eject the molded product 8 by moving the first ejector pin 1 upward. In the specific structure, the first template unit 71 is provided with a third slide groove 711 that cooperates with the first ejector pin 1. The first ejector pin 1 is adapted to be slidably connected to the third slide groove 711.

[0037] The slide 2 is movably arranged in the first template unit 71 along the first direction, and the movable trajectory of the slide 2 includes at least a first stroke and an intermediate stroke, and the first stroke and the intermediate stroke are arranged up and down; in the specific structure: the first template unit 71 is provided with a movable cavity 712, and the slide 2 is movably arranged in the movable cavity 712 along the first direction; the slide 2 is provided with an installation cavity 21 and a first slide groove 22, and the first slide groove 22 is connected to the installation cavity 21; further, the slide 2 includes an upper plate and a lower plate, the upper plate and the lower plate are fixed together and the first slide groove 22 is provided on the upper plate, the second slide groove described below is provided on the lower plate, and the installation cavity is provided between the upper plate and the lower plate.

[0038] The seesaw 3 is swingably mounted in the mounting cavity 21 of the slide 2 via a pivot 31. The seesaw 3 has a driving end and a driven end. The driven end of the seesaw 3 is transmission-connected to the first ejector 1. In the specific structure, a notch 32 is recessed on the distal end surface of the driven end of the seesaw 3. The notch 32 divides the driven end into a first lug and a second lug spaced apart in an upper and lower arrangement. The first lug is provided with a shift fork 33, and the notch can also be provided as a hole. The inner end of the first ejector 1 is convexly provided with a convex portion 11. The first ejector 1 passes through the shift fork 33, and the convex portion 11 fits into the notch 32. With this structure, the first ejector 1 can be driven to move by the swinging of the seesaw 3. The structure is simple, easy to assemble, and has stable and reliable transmission.

[0039] The first control pin 4 is movably connected to the first slide slot 22 along a first direction. The first control pin 4 is transmission-connected to the driving end of the seesaw 3. This transmission connection is such that the end of the first control pin 4 of the slide 2 in the first stroke abuts against the first template unit 71. The slide 2 slides upward relative to the first control pin 4 and, through the transmission connection between the first control pin 4 and the driving end, drives the seesaw 3 to swing. The seesaw 3 swings and, through the transmission connection between the driven end and the first ejector 1, drives the first ejector 1 to move upward in the first direction. Furthermore, the distance between the axis of the seesaw 3 and the moving direction of the first control pin 4 is smaller than the distance between the axis of the seesaw 3 and the moving direction of the first ejector 1. As a result, in the first stroke, the speed of the first ejector 1 is greater than the speed of the slide 2. This allows the first ejector 1 to achieve variable speed throughout the entire stroke, with the speed being equal to the speed of the slide 2 in the intermediate stroke and greater than the speed of the slide 2 in the first stroke, thereby facilitating ejection of the molded product 8.

[0040] Furthermore, it includes a second control pin 5, which is transmission-connected to the driving end of the seesaw 3. The slide 2 also has a second chute 23, which connects to the installation cavity 21. The first chute 22 and the second chute 23 are axially symmetrically arranged above and below the installation cavity 21, respectively. They can also be asymmetrical as needed. The two chute and the seesaw swing in different directions to ensure different ejector speeds. The movable trajectory of the slide 2 also includes a second stroke, which is arranged above and below the intermediate stroke. The second control pin 5 is movably connected to the second chute 23 along the first direction. The end of the second control pin 5 of the slide 2 in the second stroke abuts against the first template unit 71. The slide 2 slides downward relative to the second control pin 5 and drives the seesaw 3 to swing through the transmission connection between the second control pin 5 and the driving end. The seesaw 3 swings and drives the first ejector 1 downward through the transmission connection between the driven end and the first ejector 1.

[0041] Furthermore, the movable cavity 712 has a first inner wall and a second inner wall facing each other, the first inner wall is the inner top wall, and the second inner wall is the inner bottom wall. The end of the first control pin 4 of the slide 2 located in the first stroke is pressed against the first inner wall, and the end of the second control pin 5 of the slide 2 located in the second stroke is pressed against the second inner wall. The structure is simple and compact.

[0042] Furthermore, the top wall of the driving end of the seesaw 3 and the inner end of the first control pin 4 are in abutment with each other; the bottom wall of the driving end of the seesaw and the inner end of the second control pin 4 are in abutment with each other. In the specific structure: the side wall 34 of the driving end of the seesaw 3 is recessed with a matching groove, and the matching groove has a first groove wall 341 and a second groove wall 342. The first groove wall 341 is an inclined surface, and the second groove wall 342 is a curved surface wall. The inclined surface and the curved surface wall are connected. The inner end surface of the first control pin 4 matches the side wall 34 and the first groove wall 341 of the matching groove. For example, when the slide is at the lower end, the inner end surface of the first control pin 4 fits against the side wall 34. When the slide is at the upper end, the inner end surface of the first control pin 4 fits against the first groove wall 341. The use of this structure facilitates stabilizing the position of the seesaw and improving the stability and reliability of the activity.

[0043] Furthermore, the first slide groove 22 and the second slide groove 23 are both designed to be stepped grooves with a larger inner side and a smaller outer side and include a large hole and a small hole. The first control pin 4 and the second control pin 5 are both stepped structures with a larger inner side and a smaller outer side and include a large part and a small part. The large part is adapted to connect to the large hole and the small part is adapted to connect to the small hole, which facilitates assembly, limiting, and avoiding separation.

[0044] Furthermore, the system includes a second ejector pin 6, which is tilted and movable within the first template unit 71. This movement is sliding, and the inner end of the second ejector pin 6 is transmission-connected to the slide 2. The transmission connection between the slide and the inner end of the second ejector pin includes an inclined guide slot 24 provided on the slide and a protrusion fixed to the inner end of the second ejector pin. The protrusion is adapted to be connected to the guide slot 24. As needed, the second ejector pin 6 can also move in the first direction. If it is in the first direction, the transmission connection can also be a fixed connection. The cooperation between the first and second ejector pins in ejecting the molded product 8 improves the convenience of ejection. In the specific structure, the first template unit 71 is provided with a fourth slot 713, and the second ejector pin 6 is adapted to be slidably connected to the fourth slot 713.

[0045] The ejection method of the seesaw secondary ejection mechanism of the mold device includes:

[0046] Step 1: The slide 2 moves upward in the middle stroke, and the movement of the slide 2 drives the first ejector 1 to move upward synchronously (at the same speed);

[0047] In step 2, the slide 2 moves from the middle stroke into the first stroke. The first control pin 4 is pressed against the first inner wall of the first template unit 71 and remains stationary. The slide 2 continues to move. The seesaw 3 is driven to swing through the transmission connection between the first control pin 4 and the driving end of the seesaw 3. The first ejector 1 is driven to move upward (accelerate) through the transmission connection between the driven end and the first ejector 1 to eject the molded product.

[0048] After the molded product is ejected to a certain height by the first and second ejectors (primary ejection), the seesaw principle is used to force the first ejector to accelerate and eject the molded product (achieving secondary ejection). The product is quickly disengaged, achieving automatic production and improving production efficiency. Furthermore, if the molded product is large and has deep ribs, and the second ejector is a D-shaped ejector capable of clamping the product, the molded product can be ejected to a certain height by the first and second ejectors (primary ejection, in which the D-shaped ejector clamps the product 8). The first ejector is then forced to accelerate and eject the molded product (achieving secondary ejection and disengaging the D-shaped ejector).

[0049] The mold assembly includes the aforementioned seesaw secondary ejection mechanism. The first template unit 71 includes a first template, a first mold mounted on the first template, the movable cavity 712 mounted on the first template, and a guide member 73 mounted on the first template. The guide member 73 includes the aforementioned third and fourth chutes 711 and 713. The second template unit 72 includes a second template, a second mold mounted on the second template, and the first and second molds are adapted to form a mold cavity corresponding to the molded product 8.

[0050] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. The mold device has a seesaw secondary ejection mechanism, which is characterized by: include: a first ejector pin movably disposed on a first template unit of the mold device; A slide seat is provided with a first slide groove, the slide seat is movable along a first direction and is arranged on the first template unit, and the movable track of the slide seat includes at least a first stroke and an intermediate stroke; A seesaw is swingably mounted on the slide, and has a driving end and a driven end, wherein the driven end of the seesaw is in driving connection with the first ejector pin; and A first control pin is movably connected to the first slide groove along the first direction, and is transmission-connected to the driving end of the seesaw. The end of the first control pin of the slide located in the first stroke is abutted against the first template unit. The slide slides relative to the first control pin and drives the seesaw to swing through the transmission connection between the first control pin and the driving end. The seesaw swings and drives the first ejector to move through the transmission connection between the driven end and the first ejector.

2. The seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: The distance between the axis of the seesaw and the moving direction of the first control pin is different from the distance between the axis of the seesaw and the moving direction of the first ejector.

3. The seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: The slide seat is further provided with a mounting cavity, the first slide groove is connected to the mounting cavity, and the seesaw is swingably mounted in the mounting cavity of the slide seat; The first template unit is provided with a movable cavity having a first inner wall. The slide is movable in the movable cavity along a first direction. The end of the first control pin of the slide located in the first stroke is in abutment with the first inner wall.

4. The seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: Also includes: The second control pin is transmission-connected to the driving end of the seesaw; the slide is also provided with a second slide groove, and the movable trajectory of the slide also includes a second stroke, and the intermediate stroke is located between the first stroke and the second stroke; the second control pin is movably connected to the second slide groove along the first direction, and the end of the second control pin of the slide located in the second stroke is abutted against the first template unit, and the slide slides relative to the second control pin and drives the seesaw to swing through the transmission connection between the second control pin and the driving end, and the seesaw swings and drives the first ejector to move through the transmission connection between the driven end and the first ejector.

5. The seesaw secondary ejection mechanism of the mold device according to claim 4, characterized in that: The slide is further provided with a mounting cavity, the seesaw is swingably mounted in the mounting cavity of the slide, the first slide is connected to the mounting cavity, the second slide is connected to the mounting cavity, and the mounting cavity is provided between the first slide and the second slide; The first template unit is provided with a movable cavity, which has a first inner wall and a second inner wall facing each other. The slide is movably provided in the movable cavity along the first direction; the end of the first control pin of the slide located in the first stroke is abutted against the first inner wall, and the end of the second control pin of the slide located in the second stroke is abutted against the second inner wall.

6. The seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: The driven end of the seesaw is provided with a recessed notch, through which the driven end is divided into a first lug and a second lug arranged at intervals, and the first lug is provided with a shift fork; the inner end of the first ejector is convexly provided with a convex portion, and the first ejector passes through the shift fork and the convex portion is located in the notch.

7. The seesaw secondary ejection mechanism of the mold device according to claim 4, characterized in that: The driving end of the seesaw and the inner end of the first control pin are in abutment with each other; the driving end of the seesaw and the inner end of the second control pin are in abutment with each other.

8. The seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: The side wall of the driving end of the seesaw is recessed with a matching groove, and the matching groove has a groove wall. The inner end surface of the first control pin matches the side wall and the groove wall of the matching groove.

9. The seesaw secondary ejection mechanism of the mold device according to claim 4, characterized in that: The first sliding groove and the second sliding groove are both designed to be stepped grooves with a larger inner portion and a smaller outer portion and include a large hole and a small hole. The first control pin and the second control pin are both stepped structures with a larger inner portion and a smaller outer portion and include a large part and a small part. The large part is adapted to connect to the large hole and the small part is adapted to connect to the small hole.

10. The seesaw secondary ejection mechanism of the mold device according to claim 4, characterized in that: The also includes: The second ejector is movably provided on the first template unit, and the inner end of the second ejector is transmission-connected to the slide; the transmission connection between the slide and the inner end of the second ejector includes a guide groove provided on the slide and a protrusion fixedly provided on the inner end of the second ejector, and the protrusion is adapted to be connected to the guide groove.

11. Mould device, characterized in that: It includes the seesaw secondary ejection mechanism of the mold device according to claim 1.

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