Rotary core-shrinking mold stripping structure
By adopting a rotating core-reducing mold-out structure in the mold, including a rotating core, floating plate and transmission, the problem of the inability to mold out of ordinary inclined top structures is solved, and the entire circumference of the inner hole is reversed and the smooth mold out of products with small space is improved, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202420944070.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the prior art, the product structure of mold production is that the inner hole is inverted all circumference, the space is small, and the ordinary oblique top structure cannot be molded out.
A rotary core shrink mold-out structure is adopted, including a rotary core, a floating plate and a transmission mounted on the mold. A kit is fixedly installed on the top of the floating plate. The kit is rotating sleeve is installed on the surface of the rotating core. The bottom of the floating plate is equipped with a driving member for lifting and lowering. The top of the transmission member is equipped with a rotating seat and a movable plate. By pushing and pulling the oil cylinder, the movable plate is tilted and the rotating core rotates to achieve the smooth mold output of the product.
The smooth molding of products with a total circumference of the inner hole and a small space is achieved, avoiding the problem of the inability to mold out of ordinary inclined top structures, improving production efficiency and ensuring product quality.
Smart Images
Figure CN222590596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a rotary core shrinking and demoulding structure. Background Art
[0002] Injection mold is a widely used mold in the plastic industry. It is mainly composed of a pouring system, a guiding system, a forming system, a cooling system and an ejection mechanism. When processing products with complex shapes such as side holes and side concave, they cannot be ejected directly. Instead, they must be ejected through a core-pulling structure or a tilted ejector mechanism, otherwise the product will be easily damaged. With the advancement of mold processing technology, the requirements for product appearance are getting higher and higher. Many products require leather grain effects on their surfaces, and there must be no injection defects such as ejector marks, burrs, scratches, and abrasions. In order to smoothly separate the product from the mold model, a tilted ejector block structure is generally used. This involves the situation where there are two tilted ejector blocks in a set of molds. When the product structure produced by the mold is a full-circle undercut of the inner hole and the space is small, the ordinary tilted ejector structure cannot be ejected. Utility Model Content
[0003] The utility model aims to provide a rotary core shrinking demoulding structure, aiming to solve the technical problem that the product structure produced by the mold in the prior art is that the inner hole is fully undercut, the space is narrow, and the ordinary inclined top structure cannot be demoulded.
[0004] To achieve the above-mentioned purpose, an embodiment of the utility model provides a rotary core shrinking and demolding structure, including a plurality of rotary cores, a floating plate and a transmission member installed on the mold, a plurality of kits extending upward are fixedly installed on the top of the floating plate, and each of the kits is rotatably sleeved on the surface of the rotary core, a driving member for realizing lifting is provided at the bottom of the floating plate, a limiting block extends toward the driving member on one side of the floating plate, a plurality of rotating seats and a plurality of movable plates are provided on the top of the transmission member, one of the movable plates is movably limitedly matched with the limiting block, a movable groove is provided at one end of the movable plate for realizing movable cooperation with the rotary seat, the other end of the movable plate is fixedly installed with the bottom of the rotary core, and a push-pull cylinder is provided on one side of the transmission member.
[0005] Preferably, a plurality of first tooth plates and a plurality of empty slots are axially arranged around the top of the rotating core, an empty slot is arranged between two adjacent first tooth plates, and a plurality of second tooth plates are axially arranged around the top of the kit, and each of the second tooth plates is slidably embedded in each of the empty slots.
[0006] Preferably, an inverted L-shaped guide groove is dug on the kit, and the rotating core is provided with a guide block, and the guide block is slidably fitted in the guide groove.
[0007] Preferably, the driving member is a lifting cylinder for realizing the lifting effect of the floating plate.
[0008] Preferably, the number of the lifting cylinders is at least two, and the lifting cylinders are evenly distributed at the bottom edge of the floating plate.
[0009] Preferably, an L-shaped cover plate is also provided on the top of the transmission member, and the cover plate and the transmission member are combined to form a groove body, each of the rotating seats is located in the groove body, and each of the movable plates extends into the groove body and is movably cooperated with a rotating seat respectively.
[0010] Preferably, a limiting groove is provided on the top of one side of the cover plate, and the limiting block slides up and down in the limiting groove.
[0011] The above one or more technical solutions in the rotary core shrinking and demolding structure provided by the embodiment of the utility model have at least one of the following technical effects:
[0012] The present invention adopts a rotary shrink structure, which is easy to install, stable and reliable, and realizes product functions. Compared with the traditional agreement structure, it has a better touch effect. When the product is fixed on the top of the rotating core and in the mold cavity of the mold after injection molding, the floating plate is driven down by the driving member when the product is taken out, so that the horizontal position of the limit block is consistent with that of each movable plate, and at this time, the position of the limit block is close to one of the movable plates, and there is a certain movable space between the movable plate and the limit block, and the kit is separated from the product at the same time, and then the transmission member is pushed by the push-pull cylinder, and the movable plate is tilted in the direction of movement of the transmission member through the linear movement of the transmission member, so that the top of the rotating core can be promoted in the product for discharge. In the process of tilting the movable plate, the movable groove of the movable plate will slide slightly while rotating on the rotating seat. At the last tilting action, one side of the movable plate provided with the movable groove abuts against the limit block to limit the rotation, so that the rotating shaft on the rotating seat is always located in the movable groove, so as to meet the rotation of the rotating core while preventing the function of the movable plate from failing, and achieve good use effect, which can meet the production needs of products with full-circle undercuts of the inner hole and narrow space. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The overall structural diagram of the rotary core shrinking and demoulding structure provided by the embodiment of the utility model;
[0014] Figure 2 A schematic diagram of the side structure of the rotary core shrinking and demoulding structure provided by an embodiment of the utility model;
[0015] Figure 3 A schematic diagram of the structure of the transmission member of the rotary core shrinking and demoulding structure provided by an embodiment of the utility model;
[0016] Figure 4 An exploded view of a rotating core of a rotating core shrinking and demolding structure provided in an embodiment of the utility model;
[0017] Figure 5 A schematic structural diagram of a rotary core of a rotary core shrinking and demoulding structure provided in an embodiment of the utility model;
[0018] Figure 6 A schematic structural diagram of a product produced by the rotary core shrinking and demolding structure provided in an embodiment of the utility model.
[0019] Among them, the reference numerals in the figure are:
[0020] 1-rotating core, 11-first tooth plate, 12-empty slot, 13-guide block, 2-floating plate, 21-kit, 211-second tooth plate, 212-guide slot, 22-driving member, 23-limiting block, 3-transmission member, 31-rotating seat, 32-movable plate, 321-movable slot, 33-push-pull cylinder, 34-cover plate, 341-limiting slot, 35-slot body. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.
[0022] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0025] In one embodiment of the present invention, Figures 1 to 6 As shown, a rotary core shrinking and demolding structure is provided, including a plurality of rotary cores 1, a floating plate 2 and a transmission member 3 installed on the mold, a plurality of upwardly extending sets 21 are fixedly installed on the top of the floating plate 2, and each of the sets 21 is rotatably sleeved on the surface of the rotary core 1, a driving member 22 for realizing lifting is provided at the bottom of the floating plate 2, a limiting block 23 extends toward the driving member 22 on one side of the floating plate 2, a plurality of rotating seats 31 and a plurality of movable plates 32 are provided on the top of the transmission member 3, one of the movable plates 32 is movably limited and matched with the limiting block 23, a movable groove 321 is provided at one end of the movable plate 32 for realizing movable cooperation with the rotary seat 31, the other end of the movable plate 32 is fixedly installed on the bottom of the rotary core 1, and a push-pull cylinder 33 is provided on one side of the transmission member 3.
[0026] Furthermore, the top of the rotating core 1 is provided with a plurality of first tooth plates 11 and a plurality of empty slots 12 in the axial direction, and an empty slot 12 is provided between two adjacent first tooth plates 11, and the top of the set 21 is provided with a plurality of second tooth plates 211 in the axial direction, and each second tooth plate 211 is respectively slidably embedded in each empty slot 12. Specifically, the rotating core 1 and the set 21 are combined to form an assembly, and the top of the assembly is used to produce the internal structure of the product; when discharging, the floating plate 2 is driven downward by the driving member 22, and the floating plate 2 drives the set 21 to move downward, at which time the second tooth plate 211 on the set 21 is separated from the empty slot 12, and at the same time, the second tooth plate 211 is also separated from the first part of the undercut structure formed in the product, and then the transmission member 3 is pushed by the push-pull cylinder 33, so that the rotating seat 31 pushes the movable plate 32 to tilt in the direction of the movement of the transmission member 3, and the movable plate 32 drives the rotating core 1 to rotate at the same time, so that the first tooth plate 11 is separated from the second part of the undercut structure in the product, and the product can be discharged, and the fully automatic production improves the production efficiency.
[0027] Furthermore, an inverted L-shaped guide groove 212 is dug on the set 21, and the rotating core 1 is provided with a guide block 13, and the guide block 13 is slidably matched in the guide groove 212. Specifically, when discharging, the floating plate 2 is driven downward by the driving member 22, and the floating plate 2 drives the set 21 to move downward, and the distance that the floating plate 2 moves downward is the same as the length of the vertical part of the guide groove 212. The push-pull cylinder 33 pushes the transmission member 3, so that the rotating seat 31 pushes the movable plate 32 to tilt in the direction of movement of the transmission member 3, and the movable plate 32 drives the rotating core 1 to rotate at the same time. The rotation amplitude of the rotating core 1 is the same as the horizontal amplitude of the guide groove 212. The horizontal part of the guide groove 212 can limit the rotation angle of the rotating core 1 to 30° to 45°, achieving a better current effect.
[0028] Furthermore, the driving member 22 is a lifting cylinder, which is used to realize the lifting effect of the floating plate 2.
[0029] Furthermore, the number of the lifting cylinders is at least two, and the lifting cylinders are evenly distributed at the bottom edge of the floating plate 2 .
[0030] Furthermore, an L-shaped cover plate 34 is provided on the top of the transmission member 3, and the cover plate 34 and the transmission member 3 are combined to form a groove body 35, each of the rotating seats 31 is located in the groove body 35, and each of the movable plates 32 extends into the groove body 35 and is movably cooperated with a rotating seat 31 respectively.
[0031] Furthermore, a limiting groove 341 is provided on the top of one side of the cover plate 34 , and the limiting block 23 slides up and down in the limiting groove 341 . Specifically, before the lifting cylinder drives the floating plate 2 to descend, the limit block 23 is located in the limit groove 341, so as to fix the position of the driving member 22. When the lifting cylinder drives the floating plate 2 to descend, the limit block 23 moves downward and slides out of the limit groove 341, so that the limit block 23 is consistent with the horizontal position of each movable plate 32, and at this time, the position of the limit block 23 is close to one of the movable plates 32, and there is a certain movable space between the movable plate 32 and the limit block 23. In the process of tilting the movable plate 32, the movable groove 321 of the movable plate 32 will slide slightly while rotating on the rotating seat 31. At the last moment of the tilting action, one side of the movable plate 32 provided with the movable groove 321 abuts against the limit block 23 for limiting the position, thereby limiting the tilting angle of the movable plate 32, thereby realizing precise control of the rotation amplitude of the movable plate 32 and the rotating core 1, avoiding the rotating core 1 from scratching the internal structure of the product, and improving the product quality.
[0032] Working principle: After the product is injection molded, it is fixed on the top of the rotating core 1 and in the mold cavity of the mold. When the product is taken out, the driving member 22 drives the floating plate 2 to descend, so that the horizontal position of the limit block 23 is consistent with that of each movable plate 32, and at this time, the position of the limit block 23 is close to one of the movable plates 32, and there is a certain movable space between the movable plate 32 and the limit block 23, and at the same time, the kit 21 is separated from the product, and then the transmission member 3 is pushed by the push-pull cylinder 33, and the movable plate 32 is tilted in the direction of movement of the transmission member 3 through the linear movement of the transmission member 3, and then The top of the rotating core 1 is placed inside the product to discharge the material. During the tilting process of the movable plate 32, the movable groove 321 of the movable plate 32 will slide slightly while rotating on the rotating seat 31. At the last moment of the tilting action, the movable plate 32 is provided with a side of the movable groove 321 which abuts against the limit block 23 to limit the position, so that the rotating shaft on the rotating seat 31 is always located in the movable groove 321, so as to prevent the function of the movable plate 32 from failing while rotating the rotating core 1, thereby achieving a good use effect and being able to meet the production needs of products with full-circle undercuts on the inner hole and narrow space.
[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A rotary core shrinking and demoulding structure, characterized in that: It includes several rotating cores, floating plates and transmission parts installed on the mold, several kits extending upward are fixedly installed on the top of the floating plate, and each kit is rotatably sleeved on the surface of the rotating core, and a driving member for realizing lifting is provided at the bottom of the floating plate, and a limiting block extends toward the driving member on one side of the floating plate, and several rotating seats and several movable plates are provided on the top of the transmission member, one of the movable plates is movably limited and matched with the limiting block, and one end of the movable plate is provided with a movable groove for realizing movable cooperation with the rotating seat, and the other end of the movable plate is fixedly installed on the bottom of the rotating core, and a push-pull cylinder is provided on one side of the transmission member.
2. The rotary core shrinking and demoulding structure according to claim 1, characterized in that: A plurality of first tooth plates and a plurality of empty slots are axially arranged on the top of the rotating core, an empty slot is arranged between two adjacent first tooth plates, a plurality of second tooth plates are axially arranged on the top of the kit, and each of the second tooth plates is slidably embedded in each of the empty slots.
3. The rotary core shrinking and demoulding structure according to claim 1, characterized in that: An inverted L-shaped guide groove is dug on the sleeve, and a guide block is provided on the rotating core. The guide block is slidably matched in the guide groove.
4. The rotary core shrinking and demoulding structure according to claim 1, characterized in that: The driving member is a lifting cylinder, which is used to realize the lifting effect of the floating plate.
5. The rotary core shrinking and demoulding structure according to claim 4, characterized in that: The number of the lifting cylinders is at least two, and the lifting cylinders are evenly distributed at the bottom edge of the floating plate.
6. The rotary core shrinking and demolding structure according to any one of claims 1 to 5, characterized in that: An L-shaped cover plate is also provided on the top of the transmission member, and the cover plate and the transmission member are combined to form a slot body, each of the rotating seats is located in the slot body, and each of the movable plates extends into the slot body and is movably matched with a rotating seat respectively.
7. The rotary core shrinking and demoulding structure according to claim 6, characterized in that: A limiting groove is provided on the top of one side of the cover plate, and the limiting block slides up and down in the limiting groove.