Sulfur vulcanization demolding device and method thereof

Abstract

This application relates to the field of rubber, and more particularly, to a vulcanization demolding device and method thereof. This application discloses a vulcanization demolding device. The vulcanization demolding device includes a mold and a demolding device; the mold forms a cavity for vulcanizing and shaping a product; wherein, the mold includes a core, and the core is used to form the inner surface of the product; the demolding device includes a first rack, a second rack, a gear and a guide; a plurality of cores are connected to the guide; the first rack and the second rack are parallel and simultaneously engaged with the gear, so that when the first rack moves, the second rack moves in the opposite direction relative to the first rack to separate the core from the product; wherein, the first rack and the second rack are inserted into a plurality of guides and fixed at different positions on the same horizontal plane. This application solves the technical problem of difficult demolding of multi-core products and realizes batch demolding of complex products through a simple structure.

Description

Technical Field

[0001] The present application relates to the field of rubber, and more particularly, to a vulcanization demolding device and method thereof. Background Art

[0002] In the field of rubber products, some rubber products are applied to mechanical equipment, so it is necessary to ensure that the rubber has good mechanical properties after being manufactured.

[0003] Due to the complex structure of the products, in many cases, a single product requires multiple mold cores to shape its internal structure. However, the manufacturing equipment in the related art cannot meet the demolding requirements, making it difficult to demold the products after vulcanization molding, and defects are likely to occur. Once such products are used, it will cause serious failure consequences to the mechanical equipment.

[0004] For example, a core-pulling device disclosed in a Chinese patent document (Publication No.: CN215661325U) includes a front mold, a rear mold, and a core-pulling assembly. The core-pulling assembly includes a mold core for forming the hollow structure of the product. After the product is molded, it first moves synchronously with the front mold, separates from the rear mold, then separates from the front mold, and finally the core-pulling assembly pulls the mold core out of the product. However, since the product finally formed by this device has a hollow tubular structure and a simple structure, its corresponding demolding device cannot be applied to products with complex structures, and this device also cannot adapt to mass production of products.

[0005] For example Figure 1 As shown in the product structure diagram, a seal is vulcanized and molded with two opposite mold cores. Since there is no corresponding demolding mechanism on the market, the product needs to be pulled out manually in two steps after vulcanization molding, which not only causes great damage to the product but also is time-consuming and laborious.

[0006] In view of the above problems, no effective solution has been proposed in the related art. Summary of the Invention

[0007] To solve the problems that may exist in the related art, some embodiments of the present application provide a vulcanization demolding device and method, including a mold and a demolding device; the mold forms a mold cavity to vulcanize and shape the product to be processed; wherein, the mold includes a mold core for forming the inner surface of the product; the demolding device includes a first rack, a second rack, a gear, and a guide member; the first rack and the second rack are parallel and simultaneously engaged on both sides of the gear, and the first rack and the second rack are respectively connected to different guide members to form several demolding units. On the opposite sides of the two guide members in the same demolding unit, mold cores are provided; when the first rack moves, the second rack is driven by the gear to move synchronously and in the opposite direction, so that the two guide members in the same demolding unit approach or move away from each other for mold closing or demolding.

[0008] Further, a guiding member is fixed with a plurality of die cores, and the plurality of die cores are fixed on the same horizontal plane.

[0009] Further, the mold includes an upper plate and a lower plate. The upper plate includes or is connected to an upper mold, and the lower plate includes or is connected to a lower mold. The upper mold and the lower mold are combined to shape the outer surface of the product.

[0010] Further, the demolding device further includes a supporting device. The supporting device is arranged below the guiding member to support the guiding member, and the gear is fixed to the supporting device.

[0011] Further, a positioning device is arranged between the guiding members of each demolding unit. The positioning device is fixed to the supporting device. The positioning device is formed with an opening to accommodate the upper mold and the lower mold, and the inner wall of the opening is formed with die holes for the die cores to pass through.

[0012] Further, the supporting device is of a rectangular frame structure. The supporting device includes two opposite supporting edges. Two gears are respectively fixed to the two supporting edges. Each gear meshes with a first rack and a second rack, and the first rack and the second rack are parallel to the supporting edges.

[0013] Further, the upper plate and the lower plate are both formed with limiting protrusions to limit the displacement of the guiding member.

[0014] Further, the demolding device further includes a driving mechanism. The driving mechanism is fixedly connected to the guiding member to drive the guiding member to move.

[0015] Further, the mold forms an injection cavity and an injection channel. The two ends of the injection channel are respectively communicated with the mold cavity and the injection cavity. An injection device is arranged above the mold to press the rubber material from the injection cavity into the mold cavity.

[0016] Further, the injection device includes or is connected to an injection head on the side close to the upper mold. The injection head faces the injection cavity, and the volume of the injection head is equal to the volume of the injection cavity.

[0017] Further, a plurality of rectangular springs are arranged on the upper plate on the side close to the injection device.

[0018] A vulcanization demolding method specifically includes the following steps:

[0019] S1: The upper mold, the lower mold and the die cores are closed. The injection head presses the rubber material in the injection cavity into the injection channel to fill the rubber material into the mold cavity. After the rubber material fills the mold cavity, vulcanization processing is carried out.

[0020] S2: After vulcanization is completed, the injection device is lifted upward, and the disassembling device synchronously pushes out the mold and the demolding device.

[0021] S3: The disassembling device sequentially lifts the upper mold and the demolding device, and the user places the storage device below the demolding device.

[0022] S4: The user operates the driving mechanism, which drives the guiding member and the first rack to move synchronously. The gear rotates, driving the second rack to move in the opposite direction, causing the guiding member fixed on the second rack to move synchronously until the mold core is completely separated from the product.

[0023] S5: The product drops onto the storage device, and the user removes the storage device. The disassembly device combines the upper mold, the demolding device, and the lower mold and returns them below the injection molding device.

[0024] Advantages of the present application: A vulcanization demolding device and method suitable for demolding multi-core products are provided.

[0025] More specifically, some embodiments of the present application may produce the following beneficial effects:

[0026] The first rack and the second rack are parallel and are simultaneously engaged on both sides of the gear. The first rack and the second rack are respectively connected to different guiding members, forming several demolding units. On the opposite sides of the two guiding members in the same demolding unit, mold cores are provided. When the first rack moves, the second rack is driven to move synchronously in the opposite direction through the gear, causing the two guiding members in the same demolding unit to approach or move away from each other for mold closing or demolding. Compared with rubber products with two mold cores, when demolding, a highly efficient, bidirectional, and uniform force is formed, further preventing damage caused by pulling. The driving mechanism only needs to provide a small amount of force to realize simultaneous demolding of multiple groups of products.

[0027] The supporting device includes two opposite supporting edges, and gears are respectively fixed on the two supporting edges. Each gear is engaged with a first rack and a second rack. The first rack and the second rack are parallel to the supporting edges, that is, one guiding member pulls two first racks to move, driving the corresponding second rack to move in the opposite direction. Compared with single-sided driving, through this setting, the balance during the movement of the guiding member can be further increased.

[0028] The upper plate and the lower plate both form limiting protrusions to limit the displacement of the guiding member, prevent the displacement of the guiding member and thus the movement of the mold core due to the movement of the rack, and further ensure the qualification rate of product preparation. Description of the Drawings

[0029] The drawings forming a part of the present application are used to provide a further understanding of the present application, making other features, objectives, and advantages of the present application more obvious. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0030] Figure 1 is a schematic diagram of the product structure involved in the present application;

[0031] Figure 2 is a schematic diagram of the overall structure of an embodiment of the vulcanization demolding device of the present application;

[0032] Figure 3 It is a schematic diagram of the decomposition and partial enlargement of a vulcanization demoulding device according to an embodiment of the present application;

[0033] Figure 4 is Figure 3 Another perspective view of the decomposition structure of the embodiment;

[0034] Figure 5 It is a schematic diagram of the structure of the upper plate of the mold according to an embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of the partial sectional structure of the mold according to an embodiment of the present application;

[0036] Figure 7 It is a schematic diagram of the structure of the demoulding device and the driving mechanism according to an embodiment of the present application;

[0037] Figure 8 It is a schematic diagram of a partial structure of the demoulding device according to an embodiment of the present application;

[0038] Figure 9 It is a schematic diagram of the structure of a support device according to an embodiment of the present application;

[0039] Figure 10 It is a schematic diagram of the positioning device structure of the demoulding device according to an embodiment of the present application;

[0040] Figure 11 It is a schematic diagram of the injection molding device structure according to an embodiment of the present application;

[0041] Figure 12 It is another perspective structure schematic diagram of the upper plate according to an embodiment of the present application;

[0042] Figure 13 It is a schematic diagram of the rectangular spring structure according to an embodiment of the present application;

[0043] Reference numerals:

[0044] 100, vulcanization demoulding device;

[0045] 200, mold; 210, mold core; 220, upper plate; 222, upper mold; 230, lower plate; 232, lower mold; 240, limit projection; 250, injection cavity; 260, injection channel; 270, rectangular spring; 280, mold cavity;

[0046] 300, demoulding device;

[0047] 310. Driving mechanism; 320. Execution device; 330. Guide; 330a. First guide plate; 330b. Second guide plate; 331. Connection surface; 332. Guide hole; 340. Support device; 341. Support edge; 350. First rack; 360. Second rack; 370. Gear; 380. Positioning device; 381. Opening; 382. Die hole; 383. Sliding through hole; 390. Demolding unit;

[0048] 400. Injection molding device; 410. Injection molding head;

[0049] 500. Clamping part. Detailed implementation manner

[0050] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0051] In this application, terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0052] As Figures 2 to 13 shown in the structure, this application relates to a vulcanization demolding device 100, including a mold 200, a demolding device 300 and an injection molding device 400.

[0053]

[0048] Figures 4 to 6As shown in the structure, the mold 200 forms a cavity 280 to vulcanize and shape the product. The mold 200 includes a core 210, an upper plate 220, and a lower plate 230. The upper plate 220 contains or is connected to an upper mold 222, and the lower plate 230 contains or is connected to a lower mold 232. The upper mold 222 and the lower mold 232 are combined to shape the outer surface of the product, and the core 210 is used to form the inner surface of the product. In this application, the model specifications of the mold 200 are not specifically limited and depend on the user's usage requirements. Specifically, the upper plate 220 fixes a plurality of upper molds 222, the lower plate 230 fixes a plurality of lower molds 232, and the upper molds 222 and the lower molds 232 are arranged in pairs one by one to realize the simultaneous preparation of a plurality of products.

[0054] Among them, as Figures 7 to 9 shown in the structure, the demolding device 300 includes a driving mechanism 310 and an actuating device 320. The driving mechanism 310 provides a driving force to the actuating device 320. The driving mechanism 310 is fixedly connected to a guide member 330 to drive the guide member 330 to move. The actuating device 320 drives the core 210 to disengage from the inner surface of the product. The actuating device 320 includes a first rack 350, a second rack 360, a gear 370, a guide member 330, and a support device 340.

[0055] As a specific solution, the support device 340 is used to support the guide member 330. As Figure 7 shown, it is a rectangular frame structure. The guide member 330 is a rectangular plate-like structure. A plurality of cores 210 are connected to the guide member 330 and the cores 210 are fixed on the same horizontal plane. The fixing surface of the cores 210 on the guide member 330 is defined as the connecting surface 331. The connecting surface 331 of the guide member 330 is perpendicular to the contact surface of the guide member 330 and the support device 340.

[0056] To solve the problem of demolding of the multi-core 210 product in the related art, the demolding device 300 includes a first rack 350, a second rack 360, a gear 370, and a guide member 330; the first rack 350 and the second rack 360 are parallel and simultaneously engaged on both sides of the gear 370, and the first rack 350 and the second rack 360 are respectively connected to different guide members 330 to form a plurality of demolding units 390. On the opposite sides of the two guide members 330 in the same demolding unit 390, a core 210 is provided; when the first rack 350 moves, the second rack 360 is driven by the gear 370 to move synchronously in the opposite direction, so that the two guide members 330 in the same demolding unit 390 approach or separate from each other, for mold closing or demolding. Thus, when the first rack 350 moves, the second rack 360 moves in the opposite direction relative to the first rack 350, so that the core 210 is separated from the product. For rubber-like products with respect to the dual-core 210, a high-efficiency, bidirectional, and uniform force is formed during demolding, further preventing damage caused by pulling. The driving mechanism 310 only needs to provide a small amount of force to realize simultaneous demolding of multiple groups of products. A plurality of guide members 330 are formed with guide holes 332 for the rack to pass through. With this structure, the rack rail seat is omitted, the structure of the demolding device 300 is simplified, the volume of the demolding device 300 is reduced, and the stability of the rack movement is ensured. Moreover, the guide member 330 also serves as a connecting member with the core 210, and the core 210 can be driven to be synchronously and batchwise removed from the product without adding other components. Specifically, the lengths of the first rack 350 and the second rack 360 can be determined according to the production scale. Without increasing the gear 370, the rack length is extended, and the guide plate is correspondingly increased, so as to realize simultaneous demolding of multiple groups of products, and it is flexibly applicable to various manufacturing occasions.

[0057] As a specific solution, the guide member 330 fixing the first rack 350 is defined as the first guide plate 330a, and the guide member 330 fixing the second rack 360 is defined as the second guide plate 330b. The connection surfaces 331 of the first guide plate 330a and the second guide plate 330b are opposite to each other, and are cooperatively applied to the multi-core 210 product in which the cores 210 need to be arranged in the opposite direction.

[0058] More specifically, the support device 340 includes two opposite support edges 341. Two support edges 341 are respectively fixed with a gear 370. Each gear 370 is engaged with a first rack 350 and a second rack 360. The first rack 350 and the second rack 360 are parallel to the support edge 341, that is, one guide member 330 pulls two first racks 350 to move, and drives the corresponding second rack 360 to move in the opposite direction; compared with single-sided driving, through this setting, the balance of the guide member 330 during movement can be further increased. In the related art, usually an additional rack seat needs to be added to achieve the same stable effect, which is difficult to assemble and the cost is greatly increased.

[0059] Specifically, a positioning device 380 is arranged between the guiding members 330 of each demolding unit 390. The positioning device 380 is fixed to the supporting device 340. The positioning device 380 is formed with an opening 381 to accommodate the upper mold 222 and the lower mold 232. The inner wall of the opening 381 is formed with a mold hole 382 for the mold core 210 to pass through. When the mold core 210 moves for demolding, the positioning device 380 can limit the displacement of the product along with the mold core 210. Meanwhile, when the mold core 210 is reset, the mold hole 382 can guide the mold core 210 to re-enter the mold cavity 280, further preventing the misalignment of the mold core 210 and affecting the manufacturing precision of the product. The positioning device 380 is formed with a sliding through hole 383 for the first rack 350 and the second rack 360 to penetrate, further preventing the problem of the rack shaking during movement and enhancing the stability during demolding.

[0060] Since the gear 370 and the rack have a certain degree of flexibility, it is easy to face the situation where the displacement of the guiding member 330 and then the movement of the mold core 210 are caused by the movement of the rack, resulting in unqualified product preparation. Therefore, as a specific solution, both the upper plate 220 and the lower plate 230 are formed with limiting protrusions 240 to limit the displacement of the guiding member 330. When the mold core 210 is reset to prepare for vulcanizing the product, the limiting protrusions 240 at least partially contact the opposite surface of the connecting surface 331 of the guiding member 330.

[0061] Specifically, when using this vulcanization demolding device 100, only a small driving force needs to be provided to the first rack 350 to achieve batch demolding. Therefore, to save costs and simplify the structure, the driving mechanism 310 of this application is constructed as a handle structure. The two ends of the handle are fixed to the opposite surfaces of the connecting surface 331 of a guiding member 330. When the user pulls the handle, all the mold cores 210 fixed to the guiding member 330 can be taken out. As a supplementary solution, the driving mechanism 310 can also adopt a cylinder, an electric cylinder, a motor, etc., which are electrically or signal-connected to a controller to achieve high automation.

[0062] Among them, as shown in Figures 11 to 13 The injection molding device 400 is arranged above the mold 200. The mold 200 forms an injection molding cavity 250 and an injection molding channel 260. The two ends of the injection molding channel 260 are respectively communicated with the mold cavity 280 and the injection molding cavity 250 to press the rubber material from the injection molding cavity 250 into the mold cavity 280. The side of the injection molding device 400 close to the upper mold 222 includes or is connected to an injection molding head 410. The injection molding head 410 faces the injection molding cavity 250. The volume of the injection molding head 410 is less than or equal to the volume of the injection molding cavity 250. During the injection molding process, the injection molding head 410 is embedded in the injection molding cavity 250.

[0063] As a specific solution, several rectangular springs 270 are arranged on the side of the upper plate 220 close to the injection molding device 400. The rectangular springs 270 are fixed at the four corners of the upper plate 220 so that the upper mold 222 can be smoothly separated from the injection molding device 400 when the mold is opened.

[0064] The vulcanization and demolding device 100 in this embodiment specifically includes the following steps:

[0065] Step 1: The upper mold 222, the lower mold 232, and the mold core 210 are closed. The injection head 410 is inserted into the injection cavity 250, and the rubber compound in the injection cavity 250 is pressed into the injection channel 260 to fill the rubber compound into the mold cavity 280. After the mold cavity 280 is filled with the rubber compound, vulcanization processing is carried out.

[0066] Step 2: After vulcanization is completed, the injection device 400 is lifted upward, and the disassembly device pushes out the mold 200 and the demolding device synchronously.

[0067] As a specific solution, the disassembly device mentioned in Step 2 is a prior art device with a model number of P-V-250-3RT-2-PCD. It is also possible to use a disassembly machine of the same type in the market to replace the disassembly device in this method to disassemble the target object according to user requirements.

[0068] Step 3: The disassembly device sequentially lifts the upper mold 222 and the demolding device 300, and the user places the storage device under the demolding device 300. To facilitate the stable lifting of the upper mold 222 and the demolding device 300 by the disassembly device, clamping portions 500 are provided on both sides of the contact between the upper mold 222 and the supporting device in the demolding device 300 and the disassembly device.

[0069] Step 4: The user operates the driving mechanism 310. The driving mechanism 310 drives the guiding member 330 and the first rack 350 to move synchronously. The gear 370 rotates, driving the second rack 360 to move in the opposite direction, so that the guiding member 330 fixed on the second rack 360 moves synchronously until the mold core 210 is completely separated from the product.

[0070] Define the movement direction of the guiding member 330 as the stroke direction. If the structure of the demolding device 300 is very compact, some guiding members 330 may face the situation of colliding with the gear 370 during the movement process. Therefore, to prevent such a phenomenon from occurring, an anti-collision protrusion (not shown in the figure) can be set between the gear 370 and the distance of some guiding members 330 along the stroke direction, so that the guiding member 330 can stop moving when encountering the anti-collision protrusion during the displacement process; more specifically, the distance between the anti-collision protrusion and the guiding member 330 should be greater than or equal to the distance required for the mold core 210 to completely separate from the product.

[0071] Step 5: The product falls onto the storage device, and the user removes the storage device; the disassembly device combines the upper mold 222, the demolding device 300, and the lower mold 232 and returns to below the injection device 400.

[0072] In addition, the terms "installed", "set up", "provided with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments.

[0074] The above are only the preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A vulcanization demolding device, comprising: Molds and demolding devices; A mold that forms a cavity for vulcanizing and shaping a product to be processed; Among them, the mold includes a core, and the core is used to form the inner surface of the product; It is characterized in that: The demolding device includes a first rack, a second rack, a gear and a guide; the first rack and the second rack are parallel and simultaneously engaged on both sides of the gear. The first rack and the second rack are respectively connected to different guides to form several demolding units. In the same demolding unit, cores are arranged on the opposite sides of the two guides; When the first rack moves, the second rack is driven by the gear to move synchronously in the opposite direction, so that the two guides in the same demolding unit approach or move away from each other for mold closing or demolding; The mold includes an upper plate and a lower plate. The upper plate includes or is connected to an upper mold, and the lower plate includes or is connected to a lower mold. The upper mold and the lower mold are combined to shape the outer surface of the product; The demolding device further includes a support device, and the support device is arranged below the guide to support the guide, and the gear is fixed to the support device; A positioning device is arranged between the guides of each demolding unit. The positioning device is fixed to the support device. The positioning device is formed with an opening to accommodate the upper mold and the lower mold, and the inner wall of the opening is formed with a mold hole for the core to pass through; The support device is of a rectangular frame structure. The support device includes two opposite support edges, and the two support edges are respectively fixed with the gears. Each gear is engaged with a first rack and a second rack, and the first rack and the second rack are parallel to the support edge; The mold forms an injection cavity and an injection channel. The two ends of the injection channel are respectively communicated with the cavity and the injection cavity. An injection device is arranged above the mold to press the rubber material from the injection cavity into the cavity.

2. The vulcanization demolding device according to claim 1, characterized in that: A plurality of the cores are fixed to one of the guides, and the plurality of cores are fixed on the same horizontal plane.

3. The vulcanization demolding device according to claim 1, characterized in that: The upper plate and the lower plate are both formed with limit protrusions to limit the displacement of the guide; 4. The vulcanization demolding device according to claim 1, characterized in that: The demolding device further includes a driving mechanism, and the driving mechanism is fixedly connected to the guide to drive the guide to move; 5. The vulcanization demolding device according to claim 4, characterized in that: The injection device includes or is connected with an injection head on one side close to the upper mold. The injection head faces the injection cavity, and the volume of the injection head is equal to the volume of the injection cavity; 6. The vulcanization demolding device according to claim 5, characterized in that: A plurality of rectangular springs are arranged on the upper plate on one side close to the injection device; 7. A vulcanization demolding method, characterized in that: The vulcanization demolding device according to claim 6 is adopted, and specifically includes the following steps: S1: The upper mold, the lower mold and the core are closed. The injection head presses the rubber material in the injection cavity into the injection channel, so that the rubber material fills the cavity; after the cavity is filled with the rubber material, vulcanization processing is carried out; S2: After vulcanization is completed, the injection device is lifted upward, and the disassembling device synchronously pushes out the mold and the demolding device; S3: The disassembling device sequentially raises the upper mold and the demolding device, and the user places the storage device under the demolding device; S4: The user operates the driving mechanism, and the driving mechanism drives the guiding member and the first rack to move synchronously. The gear rotates, driving the second rack to move in the reverse direction, so that the guiding member fixed on the second rack moves synchronously until the mold core is completely separated from the product; S5: The product drops onto the storage device, and the user removes the storage device. The disassembling device combines the upper mold, the demolding device with the lower mold and returns to below the injection molding device.

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