Seesaw secondary ejection mechanism of mold device, ejection method of seesaw secondary ejection mechanism and mold device

Abstract

The invention discloses a secondary ejection mechanism for a seesaw of a mold device, an ejection method of the secondary ejection mechanism 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 invention relates to a seesaw secondary ejection mechanism of a mold device and an ejection method thereof and a mold device. Background Art

[0002] With the rapid development of science and technology, in order to improve production efficiency, many products are produced by molding mold devices. The mold device is generally equipped with an ejector mechanism, which includes a slide and an ejector. The slide is movable along the first direction and is arranged on the first template unit. The ejector is movable and arranged on the first template unit of the mold device. The inner end of the ejector and the slide are fixed together. The slide moves to drive the ejector to eject the molded product of the mold device. The ejector and the slide are fixed together, the ejector and the slide move synchronously, and the ejector moves at a uniform speed when the slide moves at a uniform speed. The ejection efficiency needs to be further improved. Summary of the invention

[0003] The invention provides a seesaw secondary ejection mechanism of a mold device and an ejection method thereof 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 present invention to solve the technical problem is: a seesaw secondary ejection mechanism of a mold device, comprising:

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

[0006] A slide seat, which is provided with a first slide groove, the slide seat is movably arranged on the first template unit along a first direction, and the moving track of the slide seat at least includes 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 movably connected to the first slide groove along the first direction is transmission-connected to the driving end of the seesaw, and the end of the first control pin of the slide seat located in the first stroke is abutted against the first template unit. The slide seat 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 pin to move through the transmission connection between the driven end and the first ejector pin.

[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 is further provided with a mounting cavity, the first slide slot 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 seat is movably arranged in the movable cavity along a first direction. The end of the first control pin of the slide seat in the first stroke is abutted against 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, 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 pin to move through the transmission connection between the driven end and the first ejector pin.

[0014] In one embodiment: the slide seat is further provided with a mounting cavity, the seesaw is swingably mounted in the mounting cavity of the slide seat, the first slide groove is connected to the mounting cavity, the second slide groove is connected to the mounting cavity, and the mounting cavity is arranged between the first slide groove and the second slide groove;

[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 arranged in the movable cavity along a first direction; the end of the first control pin of the slide located in the first stroke and the first inner wall are abutted against each other, and the end of the second control pin of the slide located in the second stroke and the second inner wall are abutted against each other.

[0016] In one embodiment: a notch is concavely provided 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 arranged at intervals through the notch, and the first lug is provided with a shift fork; the inner end of the first ejector pin is convexly provided to form 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, and 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 slide groove and the second slide 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 pin is movably arranged on the first template unit, and the inner end of the second ejector pin is transmission-connected to the slide seat; the transmission connection between the slide seat and the inner end of the second ejector pin includes a guide slot arranged on the slide seat and a protrusion fixedly arranged on the inner end of the second ejector pin, and the protrusion is adapted to be connected to the guide slot.

[0022] The second technical solution adopted by the present invention to solve the technical problem is: the ejection method of the secondary ejection mechanism of the seesaw of the mold device comprises:

[0023] Step 1, the slide moves in a middle stroke along a first direction, and the movement of the slide drives the first ejector to move;

[0024] Step 2, the slide moves from the middle stroke into the first stroke, the first control pin is pressed against the first template unit and remains stationary, the slide continues to move, the seesaw is driven to swing through the transmission connection between the first control pin and the driving end of the seesaw, and the first ejector is driven to move to eject the molded product through the transmission connection between the driven end and the first ejector.

[0025] The third technical solution adopted by the present invention to solve the technical problem is: a mold device, which includes the mold device seesaw secondary ejection mechanism.

[0026] Compared with the background technology, this technical solution has the following advantages:

[0027] 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

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Figure 1 It is a front view of the mold device in the mold closing state according to a specific embodiment.

[0030] Figure 2 It is a front view of the mold device in the mold separation state according to a specific embodiment.

[0031] Figure 3 It is a front view of a mold device for ejecting a molded product according to a specific embodiment.

[0032] Figure 4 yes Figure 2 An enlarged schematic diagram of point A.

[0033] Figure 5 yes Figure 3 An enlarged schematic diagram of point B.

[0034] Figure 6It is a three-dimensional cross-sectional schematic diagram of a specific implementation method of the ejector mechanism and part of the first template unit.

[0035] Figure 7 It is a three-dimensional schematic diagram of a specific implementation method of an ejector mechanism and a molded product.

[0036] Figure 8 yes Figure 7 A partial enlarged schematic diagram of .

[0037] 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; convex portion 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

[0038] Please refer to Figures 1 to 8 The mold device seesaw secondary ejection mechanism includes a first ejector pin 1, a slide 2, a seesaw 3 and a first control pin 4. In this specific implementation, 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 molded and separated along the upper and lower molds. The first template unit 71 is a lower template unit, and the second template unit 72 is an upper template unit. The first direction is the upper and lower direction (hereinafter described as an example), but it is not limited to this, and can also be a front-back direction, etc. according to needs.

[0039] The first ejector pin 1 is movably disposed on the first template unit 71 of the mold device. In this specific embodiment, the first ejector pin 1 moves along the first direction, but is not limited thereto. It can also be arranged tilted as needed, and the first ejector pin 1 moves upward to eject the molded product 8. 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, and the first ejector pin 1 is adapted to be slidably connected to the third slide groove 711.

[0040] The slide 2 is movably arranged in the first template unit 71 along the first direction, and the movable trajectory of the slide 2 at least includes 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.

[0041] 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 in transmission connection with the first ejector pin 1. In the specific structure, a notch 32 is concavely arranged on the end surface of the driven end of the seesaw 3. The driven end is divided into a first lug and a second lug spaced apart from each other via the notch 32. 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 pin 1 is convexly provided with a convex portion 11. The first ejector pin 1 passes through the shift fork 33 and the convex portion 11 is adapted to be located in the notch 32. With this structure, the swinging of the seesaw 3 can drive the first ejector pin 1 to move. The structure is simple, the assembly is convenient, and the transmission is stable and reliable.

[0042] The first control pin 4 is movably connected to the first slide slot 22 along the first direction, and the first control pin 4 is transmission-connected to the driving end of the seesaw 3. The transmission connection is such as abutment fit. The end of the first control pin 4 of the slide seat 2 in the first stroke is abutment fit with the first template unit 71. The slide seat 2 slides upward relative to the first control pin 4 and drives the seesaw 3 to swing through the transmission connection between the first control pin 4 and the driving end. The seesaw 3 swings and drives the first ejector 1 to move upward along the first direction through the transmission connection between the driven end and the first ejector 1. Further: 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, so that in the first stroke, the speed of the first ejector 1 is greater than the speed of the slide seat 2, so that the first ejector 1 can achieve speed change in the entire stroke, which is equal to the speed of the slide seat 2 in the middle stroke and greater than the speed of the slide seat 2 in the first stroke, so as to facilitate ejection of the molded product 8.

[0043] Furthermore, it also includes a second control pin 5, which is connected to the driving end of the seesaw 3 by transmission. The slide 2 is also provided with a second slide groove 23, which is connected to the installation cavity 21, and the first slide groove 22 and the second slide groove 23 are respectively arranged axially symmetrically above and below the installation cavity 21, and may not be axially symmetrical as needed, and the swing directions of the two slide grooves and the seesaw are unequal so that the corresponding ejector speeds are unequal. The activity track of the slide 2 also includes a second stroke, and the first stroke and the second stroke are respectively arranged above and below the middle stroke. The second control pin 5 is movably connected to the second slide groove 23 along the first direction, and the end of the second control pin 5 of the slide 2 located in the second stroke is abutted against the first template unit 71, and 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, and the seesaw 3 swings and drives the first ejector 1 to move downward through the transmission connection between the driven end and the first ejector 1.

[0044] 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 abutted against the first inner wall, and the end of the second control pin 5 of the slide 2 located in the second stroke is abutted against the second inner wall. The structure is simple and compact.

[0045] Furthermore, the top wall of the driving end of the seesaw 3 and the inner end of the first control pin 4 are butted against each other; the bottom wall of the driving end of the seesaw and the inner end of the second control pin 4 are butted against 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 lowermost end, the inner end surface of the first control pin 4 fits against the side wall 34, and when the slide is at the uppermost end, the inner end surface of the first control pin 4 fits against the first groove wall 341. The use of this structure is convenient for stabilizing the position of the seesaw and improving the reliability of the activity stability.

[0046] Furthermore, the first slide groove 22 and the second slide groove 23 are both configured as stepped grooves that are larger inside and smaller outside and include a large hole and a small hole. The first control pin 4 and the second control pin 5 are both configured as stepped structures that are larger inside and smaller outside 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.

[0047] Furthermore, the device also includes a second ejector pin 6, which is tilted and movable on the first template unit 71, and the movement is sliding. The inner end of the second ejector pin 6 is connected to the slide seat 2 in a transmission manner. The transmission connection between the slide seat and the inner end of the second ejector pin includes a guide slot 24 arranged tilted on the slide seat and a protrusion fixed on the inner end of the second ejector pin, and the protrusion is adapted to be connected to the guide slot 24. As required, the second ejector pin 6 can also move in the first direction, and if it is in the first direction, the transmission connection can also be a fixed connection. The first ejector pin and the second ejector pin cooperate to eject the molded product 8, thereby improving 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.

[0048] The ejection method of the seesaw secondary ejection mechanism of the mold device comprises:

[0049] 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);

[0050] 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, and 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.

[0051] After the molded product is ejected to a certain height by the first ejector and the second ejector (one-time ejection), the seesaw principle is used to force the first ejector to accelerate and eject the molded product (achieving secondary ejection), and the product is quickly detached, thereby realizing automatic production of the product and improving production efficiency. Furthermore, if the molded product is large and has deep ribs, and the second ejector is a D-type ejector that can clamp the product, then after the molded product is ejected to a certain height by the first ejector and the second ejector (one-time ejection, at which time the D-type ejector clamps the product 8), the first ejector is forced to accelerate and eject the molded product (achieving secondary ejection and detaching from the D-type ejector).

[0052] The mold device includes the seesaw secondary ejection mechanism of the mold device. The first template unit 71 includes a first template and a first mold provided on the first template. The movable cavity 712 is provided on the first template. The first template is provided with a guide component 73. The guide component 73 is provided with the third slide groove 711 and the fourth slide groove 713. The second template unit 72 includes a second template and a second mold provided on the second template. The first mold and the second mold are adapted to form a mold cavity corresponding to the molded product 8.

[0053] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, 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, which is movably disposed on a first template unit of the mold device; A slide seat, which is provided with a first slide groove, the slide seat is movably arranged on the first template unit along a first direction, and the moving track of the slide seat at least includes 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 drivingly connected to the first ejector pin; and A first control pin movably connected to the first slide groove along the first direction is transmission-connected to the driving end of the seesaw, and the end of the first control pin of the slide seat located in the first stroke is abutted against the first template unit. The slide seat 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 pin to move through the transmission connection between the driven end and the first ejector pin.

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 not equal to 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 also 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 seat is movably arranged in the movable cavity along a first direction. The end of the first control pin of the slide seat in the first stroke is abutted against 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, 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 pin to move through the transmission connection between the driven end and the first ejector pin.

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

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 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 pin is convexly provided to form a convex portion, and the first ejector pin 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 slide groove and the second slide groove are both designed as stepped grooves with larger inner part and smaller outer part and include a large hole and a small hole. The first control pin and the second control pin are both in a stepped structure with larger inner part and smaller outer part 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 pin is movably arranged on the first template unit, and the inner end of the second ejector pin is transmission-connected to the slide seat; the transmission connection between the slide seat and the inner end of the second ejector pin includes a guide slot arranged on the slide seat and a protrusion fixedly arranged on the inner end of the second ejector pin, and the protrusion is adapted to be connected to the guide slot.

11. The ejection method of the seesaw secondary ejection mechanism of the mold device according to claim 1, characterized in that: include: Step 1, the slide moves in a middle stroke along a first direction, and the movement of the slide drives the first ejector to move; Step 2, the slide moves from the middle stroke into the first stroke, the first control pin is pressed against the first template unit and remains stationary, the slide continues to move, the seesaw is driven to swing through the transmission connection between the first control pin and the driving end of the seesaw, and the first ejector is driven to move to eject the molded product through the transmission connection between the driven end and the first ejector.

12. The mold device is characterized by: It comprises the seesaw secondary ejection mechanism of the mold device according to claim 1.

Images