Simple front mold ejection driving mechanism

Abstract

The utility model discloses a simple front mold ejection driving mechanism, which relates to the field of injection molding and comprises a front mold, a rear mold and a connecting component, the front mold comprises a front fixing plate, a runner plate, a heat insulation plate, an ejector pin bottom plate, an ejector pin panel and a front mold plate, and the rear mold comprises a rear mold plate and a rear fixing plate. The connecting assembly comprises a first insert, a second insert, a first limiting piece, a second limiting piece and a telescopic device, one end of the first insert and one end of the second insert are detachably arranged on the ejector pin bottom plate and the rear mold plate respectively, and the second limiting piece and the first limiting piece are sequentially arranged between the first insert and the second insert in the direction from the front fixing plate to the rear fixing plate; one end of the telescopic device is detachably arranged on the heat insulation plate, and the other end of the telescopic device is detachably arranged on the ejector pin bottom plate. And the telescopic device extends to drive the first insert, the ejection mechanism and the rear mold to move in the same direction. And by controlling the stretching speed of the telescopic device and the moving speed during mold opening, the impact force generated during collision of the limiting piece can be reduced. The ejector pin is separated from the product.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to a simple front mold ejection driving mechanism. Background Art

[0002] Traditional flip-chip molds use externally mounted hydraulic cylinders and other drive mechanisms to drive the ejector pins to eject the product. This drive structure results in complex mold construction and large mold size. The reliance on external drive equipment for mold opening leads to unstable production. Furthermore, the hydraulic cylinders carry risks of oil leakage and pressure loss, which can prevent the normal production of products with abnormal molds.

[0003] As described in the inverted gear-linked threaded injection mold of publication number CN218227695U, both the first core plate and the ejector plate assembly are provided with hooks. During the mold opening process, the first core plate moves under the action of external force and pulls the ejector plate assembly to move through two hooks to eject the product on the product cavity. When the mold is opened, the front mold and the rear mold are separated by the oil cylinder. The oil cylinder power is usually large, and the mold itself is heavy. Due to the lack of a buffer device, when the hooks at the ends of the two hooks are hung together, the two hooks will collide. Under the influence of the impact force generated by the collision, the two hooks will produce a displacement when they collide, causing the ejector plate to move. When the upper end of the ejector has a molding structure, the slight movement of the ejector plate and the ejector will damage the inner wall of the product. At the same time, the insufficient accuracy of the ejector position will cause the ejector end to still be inside the product when the mold is opened, and the mold opening is insufficient.

[0004] Therefore, a simple front mold ejection drive mechanism is proposed, in which the distance between the casting mechanism and the ejector plate is adjustable and the relative position accuracy of the two tie rod inserts is controlled. Utility Model Content

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a simple front mold ejection drive mechanism, comprising: a front mold, a rear mold and a connecting assembly, the front mold comprising: a front fixing plate, a flow channel plate, a heat insulation plate, an ejector bottom plate, an ejector panel and a front template, the rear mold comprising a rear template and a rear fixing plate, the front fixing plate, the flow channel plate, the heat insulation plate, the ejector bottom plate, the ejector panel, the front template, the rear template and the rear fixing plate are sequentially arranged along a horizontal straight line, the ejector bottom plate and the ejector panel are slidably arranged between the heat insulation plate and the front template, the connecting assembly comprises a first insert, a second insert, a first limiter, a second limiter and an extension A contraction device, one end of the first insert and the second insert are respectively detachably arranged on the ejector base plate and the rear template, the first limiter and the second limiter are respectively arranged on one end of the first insert and the second insert, the first insert and the second insert are staggered, the second limiter and the first limiter are sequentially arranged between the first insert and the second insert along the direction from the front fixing plate to the rear fixing plate, one end of the contraction device is detachably arranged on the heat insulation plate, and the other end of the contraction device is detachably arranged on the ejector base plate; when the mold is closed, a delay distance is provided between the first limiter and the second limiter, and the delay distance is smaller than the mold opening stroke.

[0006] Preferably, the telescopic device is an air cylinder or oil cylinder with a buffer device, the cylinder body of the telescopic device is detachably arranged on the surface of the heat insulation plate away from the ejector bottom plate, the piston rod of the telescopic device passes through the heat insulation plate, and the telescopic device is embedded in the fixed plate and one end of the flow channel plate.

[0007] Preferably, the connecting assembly further comprises a connecting seat, which is detachably arranged at one end of the ejector base plate, and a first groove is provided at the center position of the end surface of the connecting seat away from the ejector base plate, and a first protrusion is protruding from one end of the first insert, and the first protrusion is detachably arranged inside the first groove, and the other end of the telescopic device is clamped between the connecting seat and the ejector base plate.

[0008] Preferably, a second protrusion is provided on one end of the second insert, and a second groove is provided on the rear template. The second protrusion is detachably arranged inside the second groove.

[0009] Preferably, it also includes a fastening screw, and the first limit member and the second limit member are respectively detachably arranged on the surfaces of the first insert and the second insert close to the delay distance, the first insert and the second insert are both provided with threaded holes along the mold opening direction, and the first limit member and the second limit member are both provided with through holes, the fastening screw passes through the first limit member and the second limit member, and one end of the fastening screw is threadedly connected to the threaded hole.

[0010] Preferably, the total length of the first insert and the second insert is less than the mold opening stroke.

[0011] Preferably, the connecting seat and the ejector base plate are both provided with semicircular grooves, the two semicircular grooves are combined to form a circular groove, and the piston rod of the telescopic device is threadedly connected or snap-connected to the circular groove.

[0012] Preferably, a through groove is formed at one end of the ejector base plate, a semi-enclosed groove is formed at one end of the ejector panel, the connecting seat passes through the through groove, and one end of the connecting seat is detachably arranged inside the semi-enclosed groove, and the length of the connecting seat along the mold opening direction is greater than or equal to the total depth of the through groove and the semi-enclosed groove.

[0013] Preferably, the first insert and the second insert are both prismatic structures, and the first limiting member and the second limiting member are both cuboid structures.

[0014] Preferably, the connecting assembly also includes a first mounting seat, a second mounting seat, a proximity switch and a sensing piece for triggering the proximity switch. The first mounting seat, the first limiter and the first insert are detachably connected in sequence, the second mounting seat, the second limiter and the second insert are detachably connected in sequence, the first mounting seat and the second mounting seat are provided with countersunk holes for fastening screws to pass through, the proximity switch is arranged on the first mounting seat and the second mounting seat, the sensing piece is embedded in the surface of the first insert and the second insert close to the delay distance, and the proximity switch is connected in series with the telescopic device.

[0015] The beneficial effects of the present invention are as follows: during the mold opening process, the second insert moves synchronously with the rear mold, the first and second stoppers approach each other until they collide, and the second insert pulls the first stopper and the first insert through the second stopper. During the mold opening process, the ejector plate is driven to move by the two inserts fixed to the rear mold and the front mold ejector plate.

[0016] At this point, the extension of the telescopic mechanism pushes the first insert, ejection mechanism, and rear mold in the same direction. By controlling the extension speed of the telescopic mechanism and the movement speed during mold opening, the impact force of the stopper collision can be reduced. When the telescopic mechanism retracts, the first insert and the first stopper pull the second stopper and the second insert in the mold closing direction. This allows the ejector plate to retract a certain distance during product ejection, ensuring that the ejector is separated from the product. During mold closing, the contraction of the telescopic mechanism pulls the ejector plate directly back into position, reducing the number of springs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings further illustrate the present invention, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0018] Figure 1 A front view of an embodiment of the present invention;

[0019] Figure 2 This is a structural diagram provided for an embodiment of the present utility model.

[0020] Figure numerals: 1: front fixing plate; 2: flow channel plate; 3: heat insulation plate; 4: ejector base plate; 5: ejector panel; 6: front template; 7: rear template; 8: rear fixing plate; 9: first insert; 10: second insert; 11: first limit member; 12: second limit member; 13: rectangular through groove; 14: connecting seat; 15: square iron; 16: telescopic device. DETAILED DESCRIPTION

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that in the present invention, unless otherwise stated, when an element is referred to as being "fixed to" or "set on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The directional words used, such as "upper, lower, left, right" generally refer to the position of the element. Figure 1 "Inside" and "outside" refer to the inside and outside of a specific outline. "Far" and "near" refer to the far and near relative to a certain component.

[0023] like Figure 1-Figure 2 As shown in , a simple front mold ejection drive mechanism provided by an embodiment of the present invention includes: a front mold, a rear mold and a connecting assembly, the front mold includes: a front fixed plate 1, a flow channel plate 2, a heat insulation plate 3, an ejector bottom plate 4, an ejector panel 5 and a front template 6, the rear mold includes a rear template 7 and a rear fixed plate 8, the front fixed plate 1, the flow channel plate 2, the heat insulation plate 3, the ejector bottom plate 4, the ejector panel 5, the front template 6, the rear template 7 and the rear fixed plate 8 are arranged in sequence along a horizontal straight line, the ejector bottom plate 4 and the ejector panel 5 are slidably arranged between the heat insulation plate 3 and the front template 6, the connecting assembly includes a first insert 9, a second insert 10, a first limiter 11, a second limiter 12 and a telescopic device 16, the One end of the first insert 9 and the second insert 10 are respectively detachably arranged on the ejector base plate 4 and the rear template 7, the first limit member 11 and the second limit member 12 are respectively arranged on one end of the first insert 9 and the second insert 10, the first insert 9 and the second insert 10 are staggered, the second limit member 12 and the first limit member 11 are sequentially arranged between the first insert 9 and the second insert 10 along the direction from the front fixing plate 1 to the rear fixing plate 8, one end of the telescopic device 16 is detachably arranged on the heat insulation plate 3, and the other end of the telescopic device 16 is detachably arranged on the ejector base plate 4; when the mold is closed, a delay distance is provided between the first limit member 11 and the second limit member 12, and the delay distance is smaller than the mold opening stroke.

[0024] The telescopic device 16 is a pneumatic or hydraulic cylinder equipped with a buffer device. The cylinder of the telescopic device 16 is removably mounted on the surface of the heat shield 3 away from the ejector base plate 4. The piston rod of the telescopic device 16 extends through the heat shield 3. The telescopic device 16 is embedded in one end of the fixed plate and the flow channel plate 2. A rectangular through-slot 13 is defined at one end of the fixed plate and the flow channel plate 2, and the cylinder of the telescopic device 16 is disposed within the rectangular through-slot 13.

[0025] The connecting assembly also includes a connecting seat 14, which is detachably arranged at one end of the ejector base plate 4. A first groove is provided at the center of the end surface of the connecting seat 14 away from the ejector base plate 4. A first protrusion is protruded from one end of the first insert 9. The first protrusion is detachably arranged inside the first groove. The other end of the telescopic device 16 is clamped between the connecting seat 14 and the ejector base plate 4.

[0026] A second protrusion is protruding from one end of the second insert 10 , and a second groove is formed in the rear template 7 . The second protrusion is detachably disposed in the second groove.

[0027] It also includes a fastening screw. The first limiting member 11 and the second limiting member 12 are respectively detachably arranged on the surfaces of the first insert 9 and the second insert 10 close to the delay distance. The first insert 9 and the second insert 10 are both provided with threaded holes along the mold opening direction. The first limiting member 11 and the second limiting member 12 are both provided with through holes. The fastening screw passes through the first limiting member 11 and the second limiting member 12. One end of the fastening screw is threadedly connected to the threaded hole.

[0028] The total length of the first insert 9 and the second insert 10 is less than the mold opening stroke.

[0029] The connecting seat 14 and the ejector base plate 4 are both provided with semicircular grooves, and the two semicircular grooves are combined to form a circular groove. The piston rod of the telescopic device 16 is threadedly connected or snap-fitted to the circular groove.

[0030] A through groove is formed at one end of the ejector base plate 4, a semi-enclosed groove is formed at one end of the ejector panel 5, the connecting seat 14 passes through the through groove, and one end of the connecting seat 14 is detachably arranged inside the semi-enclosed groove. The length of the connecting seat 14 along the mold opening direction is greater than or equal to the total depth of the through groove and the semi-enclosed groove.

[0031] The first insert 9 and the second insert 10 are both prismatic structures, and the first limiting member 11 and the second limiting member 12 are both cuboid structures.

[0032] In one embodiment, the connecting assembly further includes a first mounting seat, a second mounting seat, a proximity switch and a sensing piece for triggering the proximity switch, the first mounting seat, the first limiter 11 and the first insert 9 are detachably connected in sequence, the second mounting seat, the second limiter 12 and the second insert 10 are detachably connected in sequence, the first mounting seat and the second mounting seat are provided with countersunk holes for fastening screws to pass through, the proximity switch is arranged on the first mounting seat and the second mounting seat, the sensing piece is embedded in the surface of the first insert 9 and the second insert 10 close to the delay distance, and the proximity switch is connected in series with the telescopic device 16.

[0033] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements should be considered within the scope of this specification.

Claims

1. A simple front mold ejection drive mechanism, characterized by: include: The front mold, the rear mold and the connecting assembly, the front mold includes: a front fixing plate, a flow channel plate, a heat insulation plate, an ejector bottom plate, an ejector panel and a front template, the rear mold includes a rear template and a rear fixing plate, the front fixing plate, the flow channel plate, the heat insulation plate, the ejector bottom plate, the ejector panel, the front template, the rear template and the rear fixing plate are arranged in sequence along a horizontal straight line, the ejector bottom plate and the ejector panel are slidably arranged between the heat insulation plate and the front template, the connecting assembly includes a first insert, a second insert, a first limiter, a second limiter and a telescopic device, one end of the first insert and the second insert are respectively It is detachably arranged on the ejector base plate and the rear template, the first limit member and the second limit member are respectively arranged at one end of the first insert and the second insert, the first insert and the second insert are staggered, the second limit member and the first limit member are sequentially arranged between the first insert and the second insert along the direction from the front fixing plate to the rear fixing plate, one end of the telescopic device is detachably arranged on the heat insulation plate, and the other end of the telescopic device is detachably arranged on the ejector base plate; when the mold is closed, a delay distance is provided between the first limit member and the second limit member, and the delay distance is smaller than the mold opening stroke.

2. The simple front mold ejection drive mechanism according to claim 1, characterized in that: The telescopic device is an air cylinder or an oil cylinder. The cylinder body of the telescopic device is detachably arranged on the surface of the heat insulation plate away from the ejector bottom plate. The piston rod of the telescopic device passes through the heat insulation plate. The telescopic device is embedded in the fixed plate and one end of the flow channel plate.

3. The simplified front mold ejection drive mechanism according to claim 2, characterized in that: The connecting assembly also includes a connecting seat, which is detachably arranged at one end of the ejector base plate. A first groove is provided at the center of the end surface of the connecting seat away from the ejector base plate. A first protrusion is protruding from one end of the first insert. The first protrusion is detachably arranged inside the first groove. The other end of the telescopic device is clamped between the connecting seat and the ejector base plate.

4. The simplified front mold ejection drive mechanism according to claim 2, characterized in that: A second protrusion is protruding from one end of the second insert, and a second groove is formed in the rear template. The second protrusion is detachably arranged in the second groove.

5. The simple front mold ejection drive mechanism according to claim 2, characterized in that: It also includes a fastening screw. The first limit member and the second limit member are respectively detachably arranged on the surfaces of the first insert and the second insert close to the delay distance. The first insert and the second insert are both provided with threaded holes along the mold opening direction. The first limit member and the second limit member are both provided with through holes. The fastening screw passes through the first limit member and the second limit member, and one end of the fastening screw is threadedly connected to the threaded hole.

6. The simplified front mold ejection drive mechanism according to claim 1, characterized in that: The total length of the first insert and the second insert is less than the mold opening stroke.

7. The simplified front mold ejection drive mechanism according to claim 3, characterized in that: The connecting seat and the ejector base plate are both provided with semicircular grooves, and the two semicircular grooves are combined to form a circular groove. The piston rod of the telescopic device is threadedly connected or snap-connected to the circular groove.

8. The simplified front mold ejection drive mechanism according to claim 3, characterized in that: A through groove is formed at one end of the ejector base plate, a semi-enclosed groove is formed at one end of the ejector panel, the connecting seat passes through the through groove, and one end of the connecting seat is detachably arranged inside the semi-enclosed groove. The length of the connecting seat along the mold opening direction is greater than or equal to the total depth of the through groove and the semi-enclosed groove.

9. The simple front mold ejection drive mechanism according to claim 1, characterized in that: The first insert and the second insert are both prismatic structures, and the first limiting member and the second limiting member are both cuboid structures.

10. The simple front mold ejection drive mechanism according to claim 5, characterized in that: The connecting assembly also includes a first mounting seat, a second mounting seat, a proximity switch and a sensing piece for triggering the proximity switch. The first mounting seat, the first limiter and the first insert are detachably connected in sequence, and the second mounting seat, the second limiter and the second insert are detachably connected in sequence. The first mounting seat and the second mounting seat are provided with countersunk holes for fastening screws to pass through. The proximity switch is arranged on the first mounting seat and the second mounting seat, and the sensing piece is embedded in the surface of the first insert and the second insert close to the delay distance. The proximity switch is connected in series with the telescopic device.

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