Annular product demolding mechanism and mold

Abstract

The invention provides an annular product demolding mechanism and a mold, the annular product demolding mechanism comprises an insert core, an ejection mechanism, a linear driving mechanism and a baffle, the insert core is a rod piece, and one end of the insert core is located on the inner side of an annular product to be demolded; the ejection mechanism is used for driving the insert core to move in the first direction so that the annular product can be separated from the mold core, and the first direction is perpendicular to the end face of the mold core. The linear driving mechanism is connected with the insert core and used for driving the insert core to move in the second direction, and the second direction is parallel to the axis direction of the insert core; the baffle is provided with a through hole for the insert core to penetrate through, the insert core penetrates through the through hole, and the annular product and the linear driving mechanism are located on the two sides of the baffle respectively. Compared with the prior art, the contact area of the insert core and the annular product is larger, the insert core does not make contact with the outer side face of the annular product, the risk of surface defects is reduced, the surface quality of the annular product is improved, and the assembling effect of products with the matching requirement for the outer diameter is not affected.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a demolding mechanism and mold for a ring-shaped product. Background Technology

[0002] Ring-shaped injection molded products are widely used in automotive parts (such as sealing rings and bearing cages), electronic components (such as connector insulating rings), medical equipment (such as syringe seals), and precision instruments (such as optical lens rings). In these applications, the integrity of the product's appearance and its dimensional accuracy directly determine its assembly performance and functional reliability.

[0003] In related technologies, when ring-shaped products are produced by injection molding, after the mold is opened, the ejector plate usually drives the ejector pins, which lift the ring-shaped product and thus remove it from the mold core. Although this achieves the effect of demolding, ejector pin marks will remain on the product surface, which not only affects the product's appearance but also affects the assembly effect for products with matching outer diameter requirements. Summary of the Invention

[0004] To address the aforementioned issues, embodiments of this application provide a demolding mechanism and mold for ring-shaped products, thereby achieving the effect of not affecting the appearance of the ring-shaped product.

[0005] A first aspect of this application provides a ring-shaped product demolding mechanism, comprising:

[0006] An insert, wherein the insert is a rod and one end of the insert is located inside the annular product to be demolded;

[0007] An ejection mechanism is used to drive the insert to move along a first direction so that the annular product is disengaged from the mold core, wherein the first direction is perpendicular to the end face of the mold core;

[0008] A linear drive mechanism, connected to the insert, is used to drive the insert to move along a second direction, the second direction being parallel to the axial direction of the insert;

[0009] A baffle is provided with a through hole for the insert to pass through, and the diameter of the through hole is smaller than the diameter of the annular product. The insert passes through the through hole, and the annular product and the linear drive mechanism are located on opposite sides of the baffle.

[0010] In one possible implementation, the linear drive mechanism includes a linear drive member and a slider, the drive end of the linear drive member being connected to the slider, and the slider being fixedly connected to the insert.

[0011] In one possible implementation, the linear drive includes one of a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, a linear motor, a ball screw mechanism, and a gear and rack mechanism.

[0012] In one possible implementation, there are multiple inserts arranged side by side and perpendicular to the slider, and the number of through holes is the same as the number of inserts, and their positions correspond.

[0013] In one possible implementation, the slider includes a first sliding member and a second sliding member that are detachably connected, and the end of the insert away from the baffle is provided with a first limiting part, which is sandwiched between the first sliding member and the second sliding member.

[0014] And / or, the driving end of the linear drive is connected to a connecting block, and the connecting block is detachably connected to the slider.

[0015] A second aspect of this application provides a mold, comprising:

[0016] A front mold, wherein the front mold is provided with an injection port and a female mold core communicating with the injection port;

[0017] The rear mold includes a male mold core, which engages with the female mold core to form an injection cavity for making a ring-shaped product;

[0018] The demolding mechanism described in the first aspect, wherein the end of the insert opposite to the linear drive mechanism is located in the injection cavity, and the demolding mechanism is used to separate the annular product from the male mold core after the front mold and the rear mold are separated.

[0019] In one possible implementation, the rear mold further includes a mounting plate, a connecting seat, and a base plate. The connecting seat is used to connect to an injection molding machine. Both sides of the connecting seat are fixedly connected to the base plate and the mounting plate, respectively. The male mold core is fixedly connected to the mounting plate. The ejection mechanism includes a push plate. The male mold core is slidably connected to the push plate. The baffle and the linear drive component of the annular product demolding mechanism are fixedly connected to the push plate. The slider of the annular product demolding mechanism is slidably connected to the push plate. The push plate can move along a first direction.

[0020] In one possible implementation, the ejection mechanism further includes an ejector plate and a guide rod, with both ends of the guide rod fixedly connected to the ejector plate and the push plate, respectively. The mounting plate is located between the ejector plate and the push plate, and the guide rod passes through the mounting plate and is slidably connected to the mounting plate.

[0021] In one possible implementation, a return spring is sleeved on the guide rod, and the two ends of the return spring are respectively connected to the ejector plate and the mounting plate.

[0022] In one possible implementation, the ejection mechanism further includes an ejector base plate and an ejector pin. One end of the ejector pin is clamped between the ejector plate and the ejector base plate. The male mold core is provided with a flow channel communicating with the injection cavity. The other end of the ejector pin passes through the mounting plate and is aligned with the flow channel. The injection molding machine is provided with an ejector rod. The base plate is provided with a through hole for the ejector rod to pass through. The ejector rod passes through the through hole and abuts against the ejector base plate.

[0023] The ring-shaped product demolding mechanism and mold provided in this application include an insert, an ejector mechanism, a linear drive mechanism, and a baffle. The insert is a rod with one end located inside the ring-shaped product to be demolded, serving as the inner mold and providing support for the ring-shaped product. The ejector mechanism can drive the insert to move the ring-shaped product out of the mold core. The linear drive mechanism drives the insert to move along its axial direction. When the insert moves axially, the baffle can contact the end face of the ring-shaped product, restricting its movement and thus allowing the ring-shaped product to detach from the insert, achieving demolding. Compared with the prior art solution of ejecting the ring-shaped product using ejector pins, the insert and baffle have a larger contact area with the ring-shaped product, reducing the risk of surface defects, improving the surface quality of the ring-shaped product, and avoiding contact with the side surface of the ring-shaped product. For products with matching requirements on the outer diameter, this does not affect the assembly effect. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 A schematic diagram of the mold provided in this application;

[0026] Figure 2 A schematic diagram showing the mold opening state provided in this application;

[0027] Figure 3 A schematic diagram of the demolding mechanism and rear mold for the ring-shaped product provided in this application;

[0028] Figure 4 A structural schematic diagram of the ring-shaped product demolding mechanism and the rear mold provided in this application from another perspective;

[0029] Figure 5 Exploded view of the demolding mechanism and rear mold of the ring-shaped product provided in this application;

[0030] Figure 6 A cross-sectional schematic diagram of the demolding mechanism and the rear mold for the ring-shaped product provided in this application;

[0031] Figure 7 This is a schematic diagram of the structure of the ring-shaped product demolding mechanism provided in this application;

[0032] Figure 8 A cross-sectional schematic diagram of the slider in the annular product demolding mechanism provided in this application;

[0033] Figure 9 A schematic diagram of the structure of the male mold core provided in this application;

[0034] Figure 10 This is a cross-sectional schematic diagram of the male mold core provided in this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Ring-shaped product demolding mechanism; 11. Insert; 111. First limiting part; 12. Linear drive mechanism; 121. Linear drive component; 122. Drive component mounting base; 123. First sliding component; 124. Second sliding component; 13. Baffle; 14. Push plate; 15. Ejector plate; 16. Ejector base plate; 17. Guide rod; 18. Return spring; 19. Ejector pin; 191. Second limiting part;

[0037] 20. Rear mold; 21. Male mold core; 211. Injection cavity; 212. Runner; 213. Injection waste; 214. Connecting bolt; 22. Mounting plate; 23. Connecting seat; 24. Base plate; 241. Through hole;

[0038] 30. Front mold; 31. Injection port;

[0039] 40. Ring-shaped products.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0042] Secondly, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0043] Ring-shaped injection molded products are widely used in automotive parts (such as sealing rings and bearing cages), electronic components (such as connector insulating rings), medical equipment (such as syringe seals), and precision instruments (such as optical lens rings). In these applications, the integrity of the product's appearance and its dimensional accuracy directly determine its assembly performance and functional reliability.

[0044] In related technologies, when ring-shaped products are manufactured using injection molding, after mold opening, the ring-shaped product is located in the male mold core. Ejector pins are located at the bottom of the male mold core. An ejector plate drives the ejector pins to move inwards towards the male mold core, lifting the ring-shaped product and thus detaching it from the male mold core. While this method achieves product demolding, the thin ejector pins easily leave ejector pin marks on the surface of the ring-shaped product. This not only affects the product's appearance but also impacts the assembly effect for products with specific outer diameter fitting requirements.

[0045] To address the aforementioned issues, this application provides a demolding mechanism and mold for annular products. The demolding mechanism includes an insert, an ejector mechanism, a linear drive mechanism, and a baffle. The insert is a rod, with one end located inside the annular product to be demolded. The ejector mechanism drives the insert to move along a first direction, causing the annular product to detach from the mold core. The first direction is perpendicular to the end face of the mold core. The linear drive mechanism is connected to the insert and drives it to move along a second direction, which is parallel to the axis of the insert. The baffle has a through hole through which the insert passes, and the diameter of the through hole is smaller than the diameter of the annular product. The insert passes through the through hole, and the annular product and the linear drive mechanism are located on opposite sides of the baffle.

[0046] The ring-shaped product demolding mechanism and mold provided in this application have an insert that is a rod with one end located inside the ring-shaped product to be demolded. This insert serves as the inner mold of the ring-shaped product and provides support. An ejection mechanism can move the insert out of the mold core. A linear drive mechanism drives the insert to move axially. As the insert moves axially, a baffle contacts the end face of the ring-shaped product, restricting its movement and allowing it to detach from the insert, thus achieving demolding. Compared to existing technologies that use ejector pins to eject the ring-shaped product, this method has a larger contact area with the ring-shaped product, reducing the risk of surface defects and improving the surface quality. Furthermore, it avoids contact with the side surfaces of the ring-shaped product, ensuring proper assembly for products with matching outer diameters.

[0047] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0048] Please refer to Figures 1-10 The first aspect of this application provides a ring-shaped product demolding mechanism 10, including an insert 11, an ejection mechanism, a linear drive mechanism 12, and a baffle 13. The insert 11 is a rod, and one end of the insert 11 is located inside the ring-shaped product 40 to be demolded. The ejection mechanism is used to drive the insert 11 to move along a first direction so that the ring-shaped product 40 is separated from the mold core. The first direction is perpendicular to the end face of the mold core. The linear drive mechanism 12 is connected to the insert 11 and is used to drive the insert 11 to move along a second direction. The second direction is parallel to the axial direction of the insert 11. The baffle 13 is provided with a through hole for the insert 11 to pass through. The diameter of the through hole is smaller than the diameter of the ring-shaped product 40. The insert 11 passes through the through hole, and the ring-shaped product 40 and the linear drive mechanism 12 are located on both sides of the baffle 13.

[0049] The ring-shaped product demolding mechanism 10 provided in this application, during injection molding, has one end of the insert 11 located inside the ring-shaped product 40 to be demolded, serving as the inner mold of the ring-shaped product 40. After mold opening, the ejection mechanism drives the insert 11 to move the ring-shaped product 40 out of the mold core, and the linear drive mechanism 12 drives the insert 11 and the ring-shaped product 40 on the insert 11 to move along the axial direction of the insert 11. (See reference...) Figure 8 When the insert 11 moves axially, since the size of the annular product 40 is larger than the size of the through hole on the baffle 13, the baffle 13 can block the annular product 40, restricting its movement. As the insert 11 continues to move axially, the annular product 40 can detach from the insert 11, achieving demolding. Compared to the prior art where the annular product 40 is ejected by the ejector pin 19, the insert 11 contacts the inner surface of the annular product 40, and the end face of the annular product 40 contacts the baffle 13. This results in a larger contact area, reducing the risk of surface defects and improving the surface quality of the annular product 40. Furthermore, the insert 11 and the baffle 13 do not contact the outer surface of the annular product 40, thus not affecting the assembly effect for products with matching outer diameter requirements.

[0050] Understandably, the annular product 40 can be a circular ring or other shapes, such as a polygon on the outside and a circle on the inside, or a circle on the outside and a polygon on the inside, or both the outside and the inside can be polygons. Accordingly, the shape of the insert 11 can match the shape of the inner side of the annular product 40, and this application does not impose any limitations.

[0051] In one possible implementation, see [reference] Figure 7 The linear drive mechanism 12 includes a linear drive component 121 and a slider. The drive end of the linear drive component 121 is connected to the slider, and the slider is fixedly connected to the insert 11.

[0052] The driving end of the linear drive 121 can drive the slider to move, thereby causing the insert 11 to move along its axial direction. By setting the slider, the stability of the insert 11 during movement can be improved.

[0053] In some embodiments of this application, the linear drive 121 is a hydraulic cylinder.

[0054] In other embodiments of this application, the linear drive 121 may also be a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, a linear motor, a ball screw mechanism, a gear and rack mechanism, etc., and this application does not limit it.

[0055] In some embodiments of this application, see Figure 3 , Figure 5 There are multiple inserts 11 arranged side by side and perpendicular to each other with respect to the slider. The number of through holes is the same as the number of inserts 11, and their positions correspond.

[0056] Understandably, by setting multiple inserts 11, multiple ring-shaped products 40 can be demolded simultaneously, thereby improving production efficiency.

[0057] In some embodiments of this application, see Figure 7 and Figure 8 The slider includes a first sliding member 123 and a second sliding member 124 that are detachably connected. The end of the insert 11 away from the baffle 13 is provided with a first limiting part 111, which is sandwiched between the first sliding member 123 and the second sliding member 124.

[0058] Specifically, the size of the first limiting part 111 is larger than the size of the insert 11. The first sliding member 123 and the second sliding member 124 are fixedly connected by bolts to clamp the first limiting part 111, thereby fixing the first limiting part 111 and facilitating the disassembly and installation of the insert 11.

[0059] In some embodiments of this application, see Figure 7 The driving end of the linear drive 121 is connected to a connecting block, and the connecting block is detachably connected to the slider.

[0060] Specifically, the connecting block engages with the first sliding member 123, thereby enabling the rapid installation and removal of the slider.

[0061] A second aspect of the embodiments of this application provides a mold, see [reference] Figure 1 and Figure 2 The system includes a front mold 30, a rear mold 20, and a ring-shaped product demolding mechanism 10 provided in the first aspect. The front mold 30 is provided with an injection port 31 and a female mold core (not shown in the figure) communicating with the injection port 31. The rear mold 20 includes a male mold core 21, which engages with the female mold core to form an injection cavity 211 for making the ring-shaped product 40. One end of the insert 11 away from the linear drive mechanism 12 is located in the injection cavity 211. The demolding mechanism is used to separate the ring-shaped product 40 from the male mold core 21 after the front mold 30 and the rear mold 20 are separated.

[0062] In use, the insert 11 is first inserted into the injection cavity 211 as the inner mold of the ring-shaped product 40. Then, the front mold 30 and the rear mold 20 are closed, and the entire mold is installed on the injection molding machine. The injection molding machine injects liquid plastic into the injection cavity 211 through the injection port 31. After cooling, the mold is opened, separating the front mold 30 from the rear mold 20. Then, the ring-shaped product demolding mechanism 10 demolds the ring-shaped product 40 from the male mold core 21, completing the production of the ring-shaped product 40. Compared with existing molds, the mold provided in this application does not produce ejector pin marks, improves the surface quality of the ring-shaped product 40, and does not affect the assembly effect for products with matching requirements for outer diameter.

[0063] In some embodiments of this application, see Figure 3 and Figure 5 The rear mold 20 also includes a mounting plate 22, a connecting seat 23, and a base plate 24. The connecting seat 23 is used to connect to the injection molding machine. The two sides of the connecting seat 23 are fixedly connected to the base plate 24 and the mounting plate 22, respectively. The male mold core 21 is fixedly connected to the mounting plate 22. The ejection mechanism includes a push plate 14. The male mold core 21 is slidably connected to the push plate 14. The baffle 13 and the linear drive 121 are fixedly connected to the push plate 14. The slider is slidably connected to the push plate 14. The push plate 14 can move along the first direction.

[0064] Specifically, the injection molding machine can be connected via the connecting seat 23. The base plate 24 and the mounting plate 22 are fixed to the connecting seat 23. The male mold core 21 is fixedly connected to the mounting plate 22. The push plate 14 is provided with an opening for accommodating the male mold core 21. The baffle 13 and the linear drive 121 are fixedly connected to the push plate 14. By driving the push plate 14 to move along the first direction (i.e., the direction perpendicular to the push plate 14), the linear drive 121, the slider, the baffle 13, and the insert 11 connected to the linear drive 121 can be driven to move along the first direction as a whole, thereby removing the annular product 40 sleeved on the insert 11 from the injection cavity 211. When the driving end of the linear drive 121 retracts, it can drive the first sliding member 123 and the second sliding member 124 to slide along the push plate 14, thereby driving the insert 11 to move along its axial direction, so that the annular product 40 contacts the baffle 13 and is demolded.

[0065] In some embodiments of this application, see Figure 6 The male mold core 21 and the mounting plate 22 are fixedly connected by connecting bolts 214.

[0066] In some embodiments of this application, a drive member mounting base 122 is provided on the push plate 14, and the linear drive member 121 is fixedly connected to the push plate 14 through the drive member mounting base 122.

[0067] In some embodiments of this application, see Figures 3-5 Two linear drive assemblies and two baffles 13 are symmetrically arranged on the push plate 14. Each linear drive assembly is connected to multiple inserts 11. Correspondingly, the male mold core 21 is symmetrically arranged with injection cavities 211 communicating with the number of inserts 11. When it is necessary to demold the ring-shaped product 40, the two linear drive assemblies drive the ring-shaped product 40 to move in a direction away from each other, and then demolding is achieved through the two baffles 13, further improving production efficiency.

[0068] In some embodiments of this application, the number of inserts 11 is 16, allowing for the production of 16 ring-shaped products 40 at a time, which are then demolded. It is understood that the number of inserts 11 can also be other than those specified in this application.

[0069] In some embodiments of this application, see Figure 4 and Figure 5 The ejection mechanism also includes an ejector plate 15 and a guide rod 17. The two ends of the guide rod 17 are fixedly connected to the ejector plate 15 and the push plate 14, respectively. The mounting plate 22 is located between the ejector plate 15 and the push plate 14. The guide rod 17 passes through the mounting plate 22 and is slidably connected to the mounting plate 22.

[0070] The ejector plate 15 is driven to move in the first direction by the injection molding machine. The ejector plate 15 can be driven by the guide rod 17. Since the male mold core 21 is fixedly connected to the mounting plate 22, and the guide rod 17 passes through the mounting plate 22 and is connected to the push plate 14, the ejector plate 15 can drive the push plate 14 to move in the first direction, while the male mold core 21 remains stationary, thereby realizing the function of ejecting the ring product 40 out of the injection cavity 211.

[0071] In some embodiments of this application, see Figure 4 and Figure 5 A return spring 18 is fitted onto the guide rod 17, and the two ends of the return spring 18 are connected to the ejector plate 15 and the mounting plate 22, respectively. The return spring 18 provides the restoring force to the push plate 14, and after demolding is completed, the push plate 14 can return to its initial position under the action of the return spring 18.

[0072] In related technologies, the male mold core 21 is provided with a runner 212 that communicates with the injection cavity 211. After injection molding is completed, the plastic in the runner 212 cools and forms injection waste 213. After demolding, the injection waste 213 needs to be cleaned out of the male mold core 21.

[0073] In some embodiments of this application, see Figure 6 , Figure 9 and Figure 10 The ejection mechanism also includes an ejector base plate 16 and an ejector pin 19. One end of the ejector pin 19 is clamped between the ejector plate 15 and the ejector base plate 16. The male mold core 21 is provided with a flow channel 212 that communicates with the injection cavity 211. The other end of the ejector pin 19 passes through the mounting plate 22 and is aligned with the flow channel 212. An ejector rod (not shown in the figure) is provided on the injection molding machine (not shown in the figure). The base plate 24 is provided with a through hole for the ejector rod to pass through. The ejector rod passes through the through hole and abuts against the ejector base plate 16.

[0074] In some embodiments of this application, see Figure 4 and Figure 6 The base plate 24 has three through holes 241 and three ejector rods. The three ejector rods pass through the three through holes 241 and abut against the ejector pin base plate 16.

[0075] Understandably, the injection molding machine can drive the ejector rod to move along the first direction. The ejector rod passes through the base plate 24 and abuts against the ejector pin base plate 16, thereby driving the ejector pin base plate 16 and the ejector pin plate 15 to move. The ejector pin base plate 16 and the ejector pin plate 15 drive the ejector pin 19 to move along the first direction and extend into the flow channel 212, pushing the injection molding waste 213 out of the flow channel 212, thus cleaning up the injection molding waste 213.

[0076] For details, please refer to Figure 6The ejector pin 19 is provided with a second limiting part 191 at one end near the ejector plate 15. The ejector plate 15 is provided with a mounting hole that matches the size of the second limiting part 191. The size of the second limiting part 191 is larger than the size of the ejector pin 19. The ejector plate 15 and the ejector base plate 16 are fixed with bolts to clamp the second limiting part 191 and fix the ejector pin 19.

[0077] This application uses a rod-shaped insert 11 as the inner mold of the annular product 40, and an ejection mechanism to remove the annular product 40 from the injection cavity 211. Then, a linear drive mechanism 12 moves the annular product 40 axially along the insert 11, and a baffle 13 limits the end face of the annular product 40, thereby achieving demolding of the annular product 40. Compared with existing solutions, the contact area between the insert 11 and the annular product 40 is larger, reducing the risk of surface defects and improving the surface quality of the annular product 40. For products with matching requirements on the outer diameter, it does not affect the assembly effect.

[0078] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0079] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0080] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A ring product demolding mechanism characterized by, The application relates to a demolding mechanism for a ring-shaped product, comprising: an ejector which is a rod and one end of which is located inside a ring-shaped product to be demolded; an ejection mechanism for driving the ejector to move in a first direction so that the ring-shaped product is separated from a mold core, the first direction being perpendicular to an end surface of the mold core; a linear driving mechanism connected with the ejector and used for driving the ejector to move in a second direction, the second direction being parallel to the axis direction of the ejector; and a baffle provided with a through hole for the ejector to pass through, the diameter of the through hole being smaller than the diameter of the ring-shaped product, the ejector passing through the through hole, and the ring-shaped product and the linear driving mechanism being located on two sides of the baffle respectively. The linear driving mechanism comprises a linear driving member and a sliding block, the driving end of the linear driving member being connected with the sliding block, and the sliding block being fixedly connected with the ejector. The linear driving member comprises one of a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, a linear motor, a ball screw mechanism and a gear and rack mechanism. The number of the ejectors is plural, the plural ejectors are arranged side by side and perpendicular to the sliding block, the number of the through holes is the same as that of the ejectors, and the positions of the through holes correspond to those of the ejectors. The sliding block comprises first and second sliding members which are detachably connected, one end of the ejector away from the baffle is provided with a first limiting part, and the first limiting part is clamped between the first and second sliding members.

2. Ring-shaped product demolding mechanism according to claim 1, characterized in that The driving end of the linear driving member is connected with a connecting block which is detachably connected with the sliding block.

3. Ring product demolding mechanism according to claim 2, characterized in that The application relates to a demolding mechanism for a ring-shaped product, comprising: a front mold provided with an injection port and a female mold core in communication with the injection port; a rear mold comprising a male mold core which is buckled with the female mold core to form an injection cavity for manufacturing a ring-shaped product; and a demolding mechanism according to any one of claims 1-5, one end of the ejector away from the linear driving mechanism being located in the injection cavity, the demolding mechanism being used for separating the ring-shaped product from the male mold core after the front mold and the rear mold are separated.

4. The ring-shaped product release mechanism of claim 2, wherein, The rear mold further comprises a mounting plate, a connecting seat and a bottom plate, the connecting seat being used for connecting an injection molding machine, two sides of the connecting seat being fixedly connected with the bottom plate and the mounting plate respectively, the male mold core being fixedly connected with the mounting plate, the ejection mechanism comprising a push plate, the male mold core being slidably connected with the push plate, the baffle and the linear driving member of the ring-shaped product demolding mechanism being fixedly connected on the push plate, the sliding block of the ring-shaped product demolding mechanism being slidably connected with the push plate, and the push plate being movable in the first direction.

5. The ring-shaped product release mechanism of claim 2, wherein, The ejection mechanism further comprises a ejector plate and a guide rod, two ends of the guide rod being fixedly connected with the ejector plate and the push plate respectively, the mounting plate being located between the ejector plate and the push plate, the guide rod penetrating through the mounting plate and being slidably connected with the mounting plate. A reset spring is sleeved on the guide rod, two ends of the reset spring being connected with the ejector plate and the mounting plate respectively.

6. A mold characterized by, ​ ​ ​ ​ 7. The mold of claim 6, wherein ​ 8. The mold of claim 7, wherein, ​ 9. The mold of claim 8, wherein, ​ 10. The mold of claim 8, wherein, The ejection mechanism further comprises a ejector pin bottom plate and an ejector pin, one end of the ejector pin is clamped between the ejector pin plate and the ejector pin bottom plate, a flow channel communicating with the injection cavity is arranged on the male mold core, the other end of the ejector pin penetrates through the mounting plate and is aligned with the flow channel; an ejector rod is arranged on the injection molding machine, a through hole for the ejector rod to penetrate through is arranged on the bottom plate, and the ejector rod penetrates through the through hole and abuts against the ejector pin bottom plate.

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