A front mold half indexing mechanism for an injection mold

Abstract

The utility model provides a front mould Ha Fe line position mechanism for injection mould, include: A board, B board, front mould benevolence, back mould benevolence and two tripping components, two tripping components symmetrically set up in the both sides of front mould benevolence, including line position sliding block, inclined guide block, limit stop, limit bolt, spring, fixed block and pull off, line position sliding block can pass through inclined guide block and hang in A board along third direction slidingly, limit stop is fixedly arranged on the side of A board close to B board, the inclined hole that is inclined along third direction is seted up on line position sliding block, the head of limit bolt is fixed on front mould benevolence, the screw rod is inserted in the inclined hole along third direction, spring is seted up on the screw rod of limit bolt, one end is seted up in the hole bottom of inclined hole, the other end is seted up on front mould benevolence, the driving hole is seted up on line position sliding block, fixed block is fixed in driving hole, one end of pull off is fixed on the side of B board close to A board, the other end is inserted in driving hole and fixed block and presents the wedge shape of tripping and is locked with each other.

Description

Technical Field

[0001] This utility model belongs to the field of complex mold technology, and in particular relates to a front mold half-slide mechanism for injection molds. Background Technology

[0002] like Figure 1 As shown, a common injection mold generally includes a front mold 80 and a rear mold 90. The front mold 80 includes a front mold fixing plate 81, an A plate 82, and a front mold core 83. The front mold fixing plate 81 and the A plate 82 are fixedly connected. The front mold core 83 is embedded and fixed on the A plate 82 on the side away from the front mold fixing plate 81. The rear mold 90 includes a B plate 91, a rear mold core 92, and an ejector pin 93. The rear mold core 92 is embedded on the B plate 91 on the side close to the A plate 82. One end of the ejector pin 93 is fixed in the ejector plate 94, and the other end passes through the B plate 91 and the rear mold core 92 in sequence. The ejector plate 94 can be set on the side of the B plate 91 away from the A plate 81, either away from or close to it. After the product is injected, the B plate 91 gradually moves away from the A plate 82 to complete the mold opening. Finally, the injection molded product left on the rear mold 90 is ejected by the ejector pin 93 to complete the demolding and obtain the molded part.

[0003] When injection molded product 101 Figure 2 As shown, when the overall shape is a tall cylindrical or near-cylindrical shape and has an annular undercut 102 on the outside, it is difficult to release the clip using the conventional inclined guide post method. Therefore, how to achieve the annular undercut release of injection molded products with a tall cylindrical or near-cylindrical overall shape has become a problem that needs to be solved. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a front mold half-slide mechanism for injection molds, which solves the problem of how to achieve the disengagement of the annular undercut of injection molded products with a relatively tall cylindrical or near-cylindrical overall shape.

[0005] This utility model provides a front mold half-sliding mechanism for injection molds, used to simultaneously eject the annular locking part of the injection molded product from the second direction when the mold opens in a first direction. The front mold half-sliding mechanism includes: an A plate, a B plate, a front mold core, a rear mold core, and two release components. The front mold core is located on the side of the A plate away from the B plate, and the rear mold core is located on the side of the B plate close to the A plate. The two release components are symmetrically arranged on both sides of the front mold core along the second direction, and are located on the side of the A plate close to the B plate. Each release component includes a sliding block, a guide block, a limiting block, a limiting bolt, a spring, a fixing block, and a pull buckle. The guide block is inclined outward along a third direction and is located on the side of the A plate. The sliding block is slidably hung on the guide block along the third direction. The limiting block is fixedly arranged on the side of the A plate close to the B plate to prevent the sliding block from detaching from the guide block. An opening is provided on the side of the sliding block away from the B plate. There is an inclined hole along the third direction. The head of the limiting bolt is fixed to the front mold core. The screw of the limiting bolt is inserted into the inclined hole along the third direction. The spring is sleeved on the screw of the limiting bolt. One end of the spring is pressed against the bottom of the inclined hole, and the other end of the spring is pressed against the front mold core. The natural length of the spring is greater than the inclined depth of the inclined hole. When the mold is opened, it provides elastic force to move the slide block away from the front mold core. A drive hole is opened on the side of the slide block near plate B. The fixing block is fixed in the drive hole. One end of the pull buckle is fixed on the side of plate B near plate A. The other end of the pull buckle is detachably inserted into the drive hole. It is used to push the slide block to slide along the third direction and approach the front mold core when the mold is closed. The other end of the pull buckle is wedge-shaped and can be disengaged from the fixing block. It is used to pull the slide block away from the front mold core along the third direction when the mold is opened. The two slide blocks together with the rear mold core form a ring-shaped snap-fit ​​on the injection molded product when the mold is closed.

[0006] Optionally, the cross-sectional shape of the inclined guide block perpendicular to the third direction is T-shaped, and the side of the sliding slider near the inclined guide block is an inclined surface along the third direction. A T-shaped groove along the third direction is opened on the inclined surface, and the inclined guide block can be inserted into the T-shaped groove.

[0007] Optionally, each tripping assembly may have multiple inclined guide blocks, which are evenly distributed on one side of their respective sliding sliders.

[0008] Optionally, a limiting groove inclined in the third direction is provided on the side of the sliding block near the inclined guide block, and a limiting end is provided on the side of the limiting block near the sliding block. The limiting end is inclined in the third direction and embedded in the limiting groove. When the side of the limiting groove away from the B plate moves in the third direction during mold opening to press onto the side of the limiting end away from the B plate, the displacement of the sliding block in the second direction is the first sliding position. The first sliding position is greater than the depth of the annular buckle of the injection molded product in the second direction.

[0009] Preferably, the side of the limiting end away from the B plate and the side of the limiting groove away from the B plate are both inclined planes perpendicular to the third direction. Before mold opening, the projected length of the vertical distance between the two inclined planes in the second direction is equal to the first row position.

[0010] Preferably, the distance between the side of the pull buckle away from the fixing block and the sidewall of the drive hole in the second direction is greater than that of the first position when the mold is closed.

[0011] Optionally, the fixing block has a guide slope and a guide straight surface on the side near the pull buckle. The pull buckle includes a fixing part and a guide part with a right-angled trapezoidal cross-section. One end of the fixing part is fixed to the B plate, and the trapezoidal bottom surface of the guide part is connected to the other end of the fixing part. The side of the fixing part away from the B plate and the trapezoidal guide straight surface of the guide part are flush. When the mold is closed, the trapezoidal slope and the guide slope of the guide part fit together, and the guide straight surface fits with the fixing part. When the mold is opened, the trapezoidal top surface of the guide part slides against the guide straight surface.

[0012] Optionally, when the side of the limiting groove away from plate B is not pressed against the side of the limiting end away from plate B, the spring is in a compressed state.

[0013] Optionally, the inclined guide block is detachably fixed within the A-plate. Optionally, each tripping assembly also includes a lateral bolt, the thread of which passes through one side of the A-plate in a second direction and is inserted into the inclined guide block.

[0014] Compared with the prior art, the front mold half-slide mechanism for injection molds provided by this utility model is ingeniously designed and the ring-shaped release is convenient. It can effectively realize the release of the ring-shaped undercut of injection molded products with a tall cylindrical or near-cylindrical overall shape, greatly improving the quality of injection molded products. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a commonly used injection mold.

[0017] Figure 2 This is a schematic diagram of the front mold half-slide mechanism for an injection mold before mold opening, according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the front mold half-sliding mechanism for injection molds after disengagement, according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the front mold half-slide mechanism for injection molds after mold closing, according to an embodiment of the present invention. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Please refer to the reference. Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a front mold splitter mechanism 100 for injection molds, which is used to simultaneously eject the annular locking part 102 of the injection molded product 101 from the second direction Y when the mold is opened along the first direction X. The front mold splitter mechanism 100 includes: A plate 1, B plate 2, front mold core 3, rear mold core 4 and two release components 5.

[0023] The front mold core 3 is located on the side of plate A 1 away from plate B 2.

[0024] The rear mold core 4 is located inside plate B 2 on the side close to plate A 1.

[0025] Two release components 5 are symmetrically arranged on both sides of the front mold core 3 along the second direction Y, and located inside plate A 1 on the side closer to plate B 2. The first direction X is perpendicular to the second direction Y. Each release component 5 includes a sliding block 51, a guide block 52, a limiting block 53, a limiting bolt 54, a spring 55, a fixing block 56, and a pull buckle 57. The guide block 52 is inclined outward along the third direction W on the side inside plate A 1. The angle between the third direction W and the first direction X should facilitate demolding, and is generally between 15 degrees and 30 degrees. The sliding block 51 is slidably mounted on the inclined guide block 52 along the third direction W. The limiting block 53 is fixedly mounted on the side of plate A 1 near plate B 2 to prevent the sliding block 51 from detaching from the inclined guide block 52. The sliding block 51 has an inclined hole 511 along the third direction W on the side away from plate B 2. The head of the limiting bolt 54 is fixed on the front mold core 3, and the screw of the limiting bolt 54 is inserted into the inclined hole 511 along the third direction W. The spring 55 is sleeved on the screw of the limiting bolt 54. One end of the spring 55 rests on the bottom of the inclined hole 511, and the other end of the spring 55 rests on the front mold core 3. The natural length of the spring 55 is greater than the inclined depth of the inclined hole 511, which ensures that the spring 55 is in good condition before mold opening. 5 is in a compressed state. When the mold is opened, it provides elastic force to move the slide block 51 away from the front mold core 3. The slide block 51 has a drive hole 512 on the side near the B plate 2. The fixing block 56 is fixed in the drive hole 512. One end of the pull buckle 57 is fixed on the side of the B plate 2 near the A plate 1. The other end of the pull buckle 57 is pluggably inserted into the drive hole 512. It is used to push the slide block 51 to slide along the third direction W to approach the front mold core 3 when the mold is closed. The other end of the pull buckle 57 is wedge-shaped and can be disengaged from the fixing block 56. It is used to pull the slide block 51 away from the front mold core 3 along the third direction W when the mold is opened. The two slide blocks 51 together with the rear mold core 4 form the annular buckle 102 of the injection molded product 101 when the mold is closed.

[0026] Optionally, the inclined guide block 52 has a T-shaped cross-section perpendicular to the third direction W. The sliding slider 51 has an inclined surface 513 on the side closest to the inclined guide block 52, sloping along the third direction W. A T-shaped groove 514, also sloping along the third direction W, is provided on the inclined surface 513, allowing the inclined guide block 52 to be inserted into the T-shaped groove 514. This facilitates the sliding slider 51 being hung on the T-shaped inclined guide block 52 via the T-shaped groove 514 and sliding back and forth along the third direction W.

[0027] Optionally, each tripping assembly 5 may have multiple inclined guide blocks 52, evenly distributed on one side of its corresponding sliding slider 51. This facilitates more stable attachment of the sliding slider 51.

[0028] Optionally, a limiting groove 515 inclined in the third direction W is provided on the side of the sliding block 51 near the inclined guide block 52, and a limiting end 531 is provided on the side of the limiting block 53 near the sliding block 51. The limiting end 531 is inclined in the third direction W and embedded in the limiting groove 515. When the side of the limiting groove 515 away from B plate 2 moves in the third direction W during mold opening to press against the side of the limiting end away from B plate 2, the displacement of the sliding block 51 in the second direction Y is the first displacement. The first displacement is greater than the depth H of the annular buckle 102 of the injection molded product 101 in the second direction Y. This design can ensure the completion of the annular buckle release.

[0029] Preferably, the side of the limiting end 531 away from B plate 2 and the side of the limiting groove away from B plate 2 are both inclined planes perpendicular to the third direction W. Before mold opening, the projected length S of the vertical distance between the two inclined planes in the second direction Y is equal to the first slide position. This ensures that the limiting block 53 can better limit and fix the slide slider 51, and can also control the first slide position by controlling the actual sliding length of the limiting groove.

[0030] Preferably, the distance L between the side of the pull tab 57 away from the fixing block 56 and the sidewall of the drive hole 512 in the second direction Y during mold closing is greater than that of the first slide position. This provides sufficient space to avoid misalignment, ensuring that the slide slider 51 completes the displacement of the first slide position in the second direction Y.

[0031] Optionally, the fixing block 56 has a guide slope 561 and a guide straight surface 562 on the side near the pull buckle 57. The pull buckle 57 includes a fixing part 571 and a guide part 572 with a right-angled trapezoidal cross-section. One end of the fixing part 571 is fixed to the B plate 2, and the trapezoidal bottom surface of the guide part 572 is connected to the other end of the fixing part 571. The side of the fixing part 571 away from the B plate 2 and the trapezoidal guide straight surface of the guide part 572 are flush. When the mold is closed, the trapezoidal slope of the guide part 572 and the guide slope 561 fit together, and the guide straight surface 562 fits with the fixing part 571. When the mold is opened, the trapezoidal top surface of the guide part 572 slides against the guide straight surface 562. This facilitates the formation of an openable and closable wedge-shaped fastener.

[0032] Optionally, when the side of the limiting groove away from plate B2 is not pressed against the side of the limiting end away from plate B2, the spring 55 is in a compressed state. This arrangement of the spring 55 facilitates the continuous provision of elastic force by the spring 55 to drive the sliding slider 51 to slide along the third direction W.

[0033] Optionally, the inclined guide block 52 can be detachably fixed inside plate A1. This facilitates the disassembly and maintenance of the mold.

[0034] Optionally, each tripping assembly 5 also includes a lateral bolt 58, the thread of which passes through one side of the A plate 1 in the second direction Y and is inserted into the inclined guide block 52. This facilitates the detachable fixing of the inclined guide block 52 within the A plate 1.

[0035] The operating principle of the front mold splitter mechanism 100 for injection molds of this utility model is as follows: When the mold is opened, plate B2 begins to move away from plate A1 along the first direction X. At this time, the pull buckles 57 fixed on plate B2 on both sides begin to pull the corresponding fixing blocks 56 to drive the two sliding blocks 51 to slide along the third direction W and disengage from the injection molded product 101 along the second direction Y. At the same time, the spring 55 continues to push the sliding blocks 51 to slide stably along the third direction W until the two sliding blocks 51 stop sliding under the limiting action of the limiting blocks. When the displacement of the two sliding blocks 51 in the second direction Y is greater than the depth of the annular buckle 102 of the injection molded product 101 in the second direction Y, the annular buckle of the injection molded product 101 can be released.

[0036] When the mold is closed, plate B2 approaches plate A1 along the first direction X. At this time, the pull buckles 57 on both sides press against the drive holes 512 in their respective corresponding slide blocks 51, driving the slide blocks 51 on both sides to approach the front mold core 3 along the third direction W, thus completing the mold closing.

[0037] The front mold half-sliding mechanism for injection molds provided by this utility model is ingeniously designed and has convenient ring-shaped release. It can effectively realize the release of the ring-shaped undercut of injection molded products with a tall cylindrical or near-cylindrical overall shape, greatly improving the quality of injection molded products.

[0038] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A front mold splitter mechanism for injection molds, used to simultaneously eject the annular locking part of the injection molded product from a second direction when the mold opens along a first direction, characterized in that, The front mold splitter mechanism includes: plate A, plate B, front mold core, rear mold core, and two release assemblies; The front mold core is located on the side of plate A away from plate B; The rear mold core is located inside plate B on the side close to plate A; The two release assemblies are symmetrically arranged on both sides of the front mold core along the second direction, and located inside the A plate on the side closer to the B plate. Each release assembly includes a sliding block, a guide block, a limiting block, a limiting bolt, a spring, a fixing block, and a pull buckle. The guide block is inclined outward along the third direction and located on the side inside the A plate. The sliding block is slidably mounted on the guide block along the third direction. The limiting block is fixedly mounted on the A plate on the side closer to the B plate to prevent the sliding block from detaching from the guide block. An inclined hole along the third direction is opened on the side of the sliding block away from the B plate. The head of the limiting bolt is fixed to the front mold core, and the screw of the limiting bolt is inserted into the inclined hole along the third direction. The spring is sleeved on the screw of the limiting bolt. One end of the spring is abutted against the bottom of the inclined hole, and the other end of the spring is abutted against the front mold core. The natural length of the spring is greater than the inclined depth of the inclined hole. When the mold is opened, it provides elastic force to move the slide block away from the front mold core. A drive hole is opened on the side of the slide block near the B plate. The fixing block is fixed in the drive hole. One end of the pull buckle is fixed on the side of the B plate near the A plate. The other end of the pull buckle is pluggably inserted into the drive hole. When the mold is closed, it is used to push the slide block to slide along the third direction and approach the front mold core. The other end of the pull buckle is wedge-shaped and can be disengaged from the fixing block. When the mold is opened, it is used to pull the slide block away from the front mold core along the third direction. When the mold is closed, the two slide blocks together with the rear mold core form an annular snap position of the injection molded product.

2. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, The inclined guide block has a T-shaped cross-section perpendicular to the third direction. The side of the sliding slider near the inclined guide block is an inclined surface that is inclined along the third direction. A T-shaped groove that is inclined along the third direction is opened on the inclined surface, and the inclined guide block can be inserted into the T-shaped groove.

3. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, Each tripping assembly contains multiple inclined guide blocks, which are evenly distributed on one side of their respective sliding sliders.

4. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, The sliding block has a limiting groove inclined along the third direction on one side near the inclined guide block. The limiting block has a limiting end on one side near the sliding block. The limiting end is inclined along the third direction and embedded in the limiting groove. When the side of the limiting groove away from the B plate moves along the third direction during mold opening to press on the side of the limiting end away from the B plate, the displacement of the sliding block in the second direction is the first sliding position. The first sliding position is greater than the depth of the annular buckle of the injection molded product in the second direction.

5. The front mold splitter mechanism for injection molds as described in claim 4, characterized in that, The side of the limiting end away from the B plate and the side of the limiting groove away from the B plate are both inclined planes perpendicular to the third direction. Before mold opening, the projected length of the vertical distance between the two inclined planes in the second direction is equal to the first row position.

6. The front mold splitter mechanism for injection molds as described in claim 4, characterized in that, The distance between the side of the pull tab away from the fixing block and the sidewall of the drive hole in the second direction is greater than that of the first position when the mold is closed.

7. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, The fixing block has a guide slope and a guide straight surface on the side near the pull buckle. The pull buckle includes a fixing part and a guide part with a right-angled trapezoidal cross section. One end of the fixing part is fixed to the B plate, and the trapezoidal bottom surface of the guide part is connected to the other end of the fixing part. The side of the fixing part away from the B plate is flush with the trapezoidal guide straight surface of the guide part. When the mold is closed, the trapezoidal slope of the guide part and the guide slope are in contact with each other, and the guide straight surface is in contact with the fixing part. When the mold is opened, the trapezoidal top surface of the guide part slides against the guide straight surface.

8. The front mold splitter mechanism for injection molds as described in claim 4, characterized in that, When the side of the limiting groove away from the B plate is not pressed against the side of the limiting end away from the B plate, the spring is in a compressed state.

9. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, The inclined guide block is detachably fixed inside the A plate.

10. The front mold splitter mechanism for injection molds as described in claim 1, characterized in that, Each tripping assembly also includes a lateral bolt, the thread of which passes through one side of the A plate in a second direction and is inserted into the inclined guide block.

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