Multidirectional linkage demolding mechanism of rubber mold

Abstract

The utility model relates to the technical field of demolding equipment, in particular to a multidirectional linkage demolding mechanism of a rubber mold, which comprises a demolding bin, a rubber product is arranged at the upper part in the demolding bin, two sides of the rubber product are adsorbed and fixed through negative pressure components, and the bottom of the rubber product is jacked and demolded through a lower jacking part. Side top parts are arranged on the two sides of the bottom of the rubber product, and the lower top part drives the side top parts to rise. According to the multidirectional linkage demolding mechanism of the rubber mold, the negative pressure assembly is arranged, so that a rubber product can be stably adsorbed and fixed before demolding, deviation of the product in the demolding process is avoided, and the demolding accuracy is ensured; through the linkage design of the lower top part and the side top part, a multi-direction demolding mode combining bottom jacking and side jacking of a rubber product is achieved, compared with traditional single-direction jacking, the rubber product can be stressed more evenly, the problems of deformation and damage caused by uneven stress are effectively reduced, and the product percent of pass is greatly increased.

Description

Technical Field

[0001] This utility model relates to the field of demolding equipment technology, and more specifically, to a multi-directional linkage demolding mechanism for rubber molds. Background Technology

[0002] In the field of rubber mold manufacturing, the demolding process plays a decisive role in product quality and production efficiency. Traditional rubber mold demolding mechanisms, such as the "Demolding Mechanism for a Rubber Mold" disclosed in application number "CN201921373667.0", employ an ejector rod in conjunction with a demolding platen and a suction cup. The ejector rod lowers the demolding platen to reduce the air pressure in the mold cavity, causing the workpiece to move downwards. The suction cup then adheres to the bottom edge of the workpiece, applying additional pressure to achieve demolding. However, this structure is relatively complex and time-consuming when demolding rubber parts, resulting in low demolding efficiency.

[0003] Another example is the "Quick Demolding Device for Rubber Molds" disclosed in application number "CN202021602689.2". This device uses a spring in the upper mold to push out the ejector pins to complete demolding, while the ejector mechanism lifts the push plate to drive the top plate out, and the hook and slide rail of the hooking mechanism complete the removal of the part. However, this demolding device requires a lot of time to disassemble when changing between the upper and lower molds due to its inconvenient structure.

[0004] In general, traditional demolding mechanisms mostly employ a unidirectional ejection method, such as ejecting rubber products only from the bottom upwards. However, rubber products have complex and diverse shapes, often with special designs such as grooves and protrusions inside. This unidirectional demolding easily leads to uneven stress on the rubber product during the demolding process. This not only causes quality problems such as deformation and breakage of the rubber product, but also increases the difficulty of demolding and slows down production efficiency. Furthermore, existing demolding mechanisms lack an effective linkage mechanism when handling rubber products that are tightly bonded to the inner mold, making it difficult to smoothly separate the inner mold. This results in frequent cases of rubber products sticking to the inner mold, further affecting product qualification rate and production schedule. Utility Model Content

[0005] The purpose of this invention is to provide a multi-directional linkage demolding mechanism for rubber molds, in order to solve the problem mentioned in the background art that traditional demolding mechanisms mostly adopt a single-direction ejection method, such as ejecting rubber products only from the bottom upwards.

[0006] To achieve the above objectives, this utility model provides a multi-directional linkage demolding mechanism for rubber molds, including a demolding chamber. A rubber product is disposed inside the upper part of the demolding chamber. The two sides of the rubber product are adsorbed and fixed by negative pressure components. The bottom of the rubber product is lifted and demolded by a lower lifting component. Side lifting components are disposed on both sides of the bottom of the rubber product. The lower lifting component drives the side lifting components to rise, thereby lifting and demolding the rubber product laterally. The rubber product deforms and extrudes the inner mold outward.

[0007] This device is located inside the demolding chamber. The negative pressure component uses the principle of negative pressure adsorption to form an adsorption force on both sides of the rubber product, fixing it in place. The lower ejector component provides power to lift upwards through the drive device, while simultaneously driving the side ejector components to rise. The side ejector components laterally lift the rubber product, causing it to deform. Utilizing the elastic deformation characteristics of rubber, the inner mold is extruded outwards and detached.

[0008] Preferably, the top of the demolding chamber is detachably fitted with a top cover.

[0009] This feature allows for a detachable installation of the top of the demolding chamber, with the top cover installed via a specific connection structure, ensuring the inner cavity remains sealed and clean when not in use.

[0010] Preferably, the lower top component includes a drive cylinder, a drive rod is mounted on the top output shaft of the drive cylinder, a lower top plate is mounted on the top of the drive rod, and a horizontal side top plate is mounted on the side of the drive rod.

[0011] In this top component, the drive cylinder serves as the power source, and its top output shaft drives the drive rod to move up and down. The drive rod drives the lower top plate at the top to lift the bottom of the rubber product. At the same time, the horizontal side top plate installed on the side of the drive rod drives the side top component to rise when the drive rod rises, realizing multi-directional linkage.

[0012] Preferably, a soft pad is installed on the top surface of the lower top plate.

[0013] The soft pads installed on the top surface of the lower plate in this setting cushion the force between the lower plate and the rubber product during lifting, preventing damage from hard contact.

[0014] Preferably, the side-top component includes a side-top column, the top of which is fitted with a wedge block, which laterally lifts the rubber product via its top inclined surface.

[0015] In this configuration, the side top column of the side top component rises under the action of the side top plate, and the wedge block installed at the top contacts the rubber product through its top inclined surface. As the side top column rises, the inclined surface of the wedge block pushes the rubber product, achieving lateral lifting.

[0016] Preferably, the bottom of the wedge block has a slot, the top of the side top post is inserted into the slot, and a spring is installed between the top of the side top post and the inner wall of the slot.

[0017] This design features a slot at the bottom of the wedge block that engages with the top of the side support column, with a spring installed between them. During lateral lifting, the spring provides elastic cushioning and adaptive adjustment based on the actual shape and resistance of the rubber product. When encountering significant resistance, the spring compresses, allowing the wedge block to better conform to the surface of the rubber product for lateral pushing.

[0018] Preferably, the negative pressure assembly includes a negative pressure tube, the upper end of which is connected to a negative pressure suction cup, and the lower end of which is connected to a negative pressure pump.

[0019] In this negative pressure assembly, the negative pressure pump generates negative pressure, which is transmitted to the negative pressure suction cup through the negative pressure pipe, causing the suction cup to adhere tightly to the surface of the rubber product, forming an adsorption force to fix the rubber product in place.

[0020] Preferably, a fixing plate is adhered to the back of the negative pressure suction cup, and the fixing plate is installed on the inner side wall of the demolding chamber.

[0021] This feature involves attaching the negative pressure suction cup to the inner wall of the demolding chamber via an adhesive fixing plate on the back, thus firmly fixing the negative pressure suction cup inside the demolding chamber and ensuring its stable position during operation to guarantee the adsorption effect.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In the multi-directional linkage demolding mechanism of this rubber mold, a negative pressure component is set up to firmly adsorb and fix the rubber product before demolding, preventing the product from shifting during demolding and ensuring the accuracy of demolding. The linkage design of the lower ejector and the side ejector components realizes a multi-directional demolding method that combines bottom lifting and side lifting of the rubber product. Compared with the traditional single-direction ejection, the rubber product can be subjected to more uniform force, effectively reducing deformation and damage caused by uneven force, and greatly improving the product qualification rate.

[0024] Specifically, in the lower ejector component, the drive cylinder raises the lower ejector plate and side ejector plates via a drive rod. The wedge-shaped block of the side ejector component, under the action of the side ejector pillars, utilizes its top inclined surface to achieve lateral lifting, causing the rubber product to deform and extrude the inner mold outwards. This multi-directional linkage demolding method greatly improves demolding efficiency and shortens the production cycle. Simultaneously, the soft pad on the top of the lower ejector plate provides cushioning protection for the rubber product during lifting, further reducing the risk of product damage. The spring design between the side ejector pillars and the wedge-shaped block provides elastic cushioning based on the actual conditions of the rubber product, enhancing the applicability of the demolding mechanism. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the lower top component in this utility model;

[0027] Figure 3 This is a schematic diagram of the negative pressure component in this utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Demolding chamber; 11. Top cover; 2. Lower ejector assembly; 21. Drive cylinder; 22. Drive rod; 23. Lower ejector plate; 231. Soft pad; 24. Side ejector plate; 3. Side ejector assembly; 31. Side ejector column; 311. Spring; 32. Wedge block; 321. Slot; 4. Negative pressure assembly; 41. Negative pressure pipe; 42. Fixing plate; 43. Negative pressure suction cup; 44. Negative pressure pump; 5. Rubber product; 6. Inner mold. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] This utility model provides a multi-directional linkage demolding mechanism for rubber molds, such as Figure 1 As shown, the device includes a demolding chamber 1. A rubber product 5 is placed inside the upper part of the demolding chamber 1. The two sides of the rubber product 5 are adsorbed and fixed by a negative pressure component 4. The bottom of the rubber product 5 is lifted and demolded by a lower lifting component 2. Side lifting components 3 are provided on both sides of the bottom of the rubber product 5. The lower lifting component 2 drives the side lifting components 3 to rise, thereby lifting and demolding the rubber product 5 laterally. The rubber product 5 deforms and extrudes the inner mold 6 outward.

[0032] Inside the demolding chamber 1, the negative pressure component 4 utilizes the principle of negative pressure adsorption, forming an adsorption force on both sides of the rubber product 5 through the negative pressure suction cup 43, thus fixing it in place. The drive cylinder 21 in the lower ejector component 2 provides power, driving the drive rod 22 to lift upwards, simultaneously lifting the side ejector component 3. The wedge-shaped block 32 of the side ejector component 3 laterally lifts the rubber product 5, causing it to deform. Utilizing the elastic deformation characteristics of rubber, the inner mold 6 is extruded outwards and detached. This achieves multi-directional linkage demolding, which, compared to traditional single-direction demolding, ensures that the rubber product 5 is subjected to uniform force, avoiding product deformation and damage due to uneven force, and effectively improving the product qualification rate. At the same time, the negative pressure suction cup 43 of the negative pressure component 4 adsorbs and fixes the product, ensuring the stability of the product position during demolding and improving demolding accuracy.

[0033] In this embodiment, as Figure 1 As shown, a top cover 11 is detachably installed on the top of the demolding chamber 1.

[0034] The top of the demolding chamber 1 is detachable, and the top cover 11 is installed using a conventional detachable connection method such as bolt connection. This facilitates operation inside the demolding chamber 1 when needed, such as installing or removing molds or rubber products 5. It also facilitates the installation of molds, placement and removal of rubber products 5, and inspection, repair, and maintenance of the internal structure of the demolding chamber 1, improving the convenience of equipment maintenance and extending the equipment's service life.

[0035] Specifically, such as Figure 2 As shown, the lower top component 2 includes a drive cylinder 21, a drive rod 22 is mounted on the top output shaft of the drive cylinder 21, a lower top plate 23 is mounted on the top of the drive rod 22, and a horizontal side top plate 24 is mounted on the side of the drive rod 22.

[0036] In the lower ejector component 2, the drive cylinder 21 serves as the power source, and its top output shaft drives the drive rod 22 to move up and down. The drive rod 22 drives the lower ejector plate 23 at the top to lift the bottom of the rubber product 5. At the same time, the horizontal side ejector plate 24 installed on the side of the drive rod 22 drives the side ejector column 31 of the side ejector component 3 to rise when the drive rod rises, realizing multi-directional linkage. This provides stable and controllable lifting power for the demolding process. The drive cylinder 21 precisely controls the lifting stroke and force to ensure smooth and reliable demolding action. The side ejector plate 24 cooperates with the side ejector component 3 to realize the linkage demolding of the bottom and the side, improving demolding efficiency and quality.

[0037] Furthermore, such as Figure 2 As shown, a pad 231 is installed on the top surface of the lower top plate 23.

[0038] The soft pad 231 installed on the top surface of the lower top plate 23 buffers the force between the lower top plate 23 and the rubber product 5 during lifting, preventing damage to the rubber product 5 from hard contact. This effectively protects the surface of the rubber product 5, preventing scratches and damage caused by direct hard contact during lifting and demolding, further improving product quality.

[0039] Furthermore, such as Figure 1 , Figure 2 As shown, the side top component 3 includes a side top column 31, and a wedge block 32 is installed on the top of the side top column 31. The wedge block 32 laterally lifts the rubber product 5 through its top inclined surface.

[0040] The side top column 31 of the side top component 3 rises under the action of the side top plate 24. The wedge block 32 installed at the top contacts the rubber product 5 through its top inclined surface. As the side top column 31 rises, the inclined surface of the wedge block 32 pushes the rubber product 5, realizing lateral lifting. By utilizing the inclined surface structure of the wedge block 32, the vertical upward force is converted into a lateral thrust on the rubber product 5, realizing lateral demolding of the rubber product 5. Combined with bottom lifting, the rubber product 5 is more easily detached from the inner mold 6 under the action of multi-directional forces, improving the demolding success rate and efficiency.

[0041] Furthermore, such as Figure 2 As shown, a slot 321 is provided at the bottom of the wedge block 32, the top of the side top post 31 is inserted into the slot 321, and a spring 311 is installed between the top of the side top post 31 and the inner wall of the slot 321.

[0042] A slot 321 is provided at the bottom of the wedge block 32 to engage with the top of the side top post 31, and a spring 311 is installed between them. During lateral lifting, the spring 311 can provide a certain elastic buffer and adaptive adjustment capability according to the actual shape and resistance of the rubber product 5. When encountering greater resistance, the spring 311 compresses, allowing the wedge block 32 to better conform to the surface of the rubber product 5 for lateral pushing. This enhances the adaptability of the side top component 3 to rubber products 5 of different shapes and sizes, avoids demolding difficulties or product damage caused by irregular shapes or excessive resistance of the rubber product 5, and improves the versatility and reliability of the demolding mechanism.

[0043] Furthermore, such as Figure 1 , Figure 3 As shown, the negative pressure assembly 4 includes a negative pressure tube 41, with a negative pressure suction cup 43 connected to the upper end of the negative pressure tube 41 and a negative pressure pump 44 connected to the lower end of the negative pressure tube 41.

[0044] In the negative pressure assembly 4, the negative pressure pump 44 generates negative pressure, which is transmitted to the negative pressure suction cup 43 through the negative pressure pipe 41. This causes the negative pressure suction cup 43 to adhere tightly to the surface of the rubber product 5, forming an adsorption force that fixes the rubber product 5 in place. This provides a stable and reliable adsorption force, ensuring that the rubber product 5 remains fixed during demolding, preventing product movement or displacement, and guaranteeing the stability and accuracy of the demolding process.

[0045] Furthermore, such as Figure 1 , Figure 3 As shown, a fixing plate 42 is attached to the back of the negative pressure suction cup 43, and the fixing plate 42 is installed on the inner wall of the demolding chamber 1.

[0046] The negative pressure suction cup 43 is mounted on the inner wall of the demolding chamber 1 via an adhesive fixing plate 42, firmly fixing the negative pressure suction cup 43 inside the demolding chamber 1 and ensuring its stable position during operation to guarantee the adsorption effect. The reasonable layout of the negative pressure components 4 ensures the secure installation of the negative pressure suction cup 43, guaranteeing the normal functioning of the negative pressure adsorption. At the same time, this installation method makes the entire demolding mechanism compact, easy to install and maintain, does not occupy excessive space, and improves the space utilization rate of the equipment.

[0047] When using the multi-directional linkage demolding mechanism for rubber molds of this utility model, before demolding, first remove the top cover 11 from the top of the demolding chamber 1, place the mold containing the rubber product 5 and the inner mold 6 in a suitable position inside the demolding chamber 1, and then reinstall and fix the top cover 11 to complete the pre-demolding preparation. At this time, the negative pressure component 4 begins to function, the negative pressure pump 44 starts, generating negative pressure and transmitting it through the negative pressure pipe 41 to the negative pressure suction cup 43, so that the negative pressure suction cup 43 is tightly attached to both sides of the rubber product 5, forming an adsorption force, and firmly fixing the rubber product 5 inside the demolding chamber 1 to prevent it from shifting during the demolding process.

[0048] After preparation, the demolding process officially begins. The drive cylinder 21 in the lower ejector component 2 is activated, and the top output shaft of the drive cylinder 21 drives the drive rod 22 upward. The drive rod 22 causes the lower ejector plate 23 to rise, and simultaneously, the side ejector plate 24 on the side of the drive rod 22 also rises. As the side ejector plate 24 rises, it causes the side ejector column 31 of the side ejector component 3 to rise, and the wedge block 32 on top of the side ejector column 31 also rises. During the rise, the top inclined surface of the wedge block 32 contacts the rubber product 5, and as it continues to rise, it converts the vertical upward force into a lateral thrust on the rubber product 5, achieving lateral lifting of the rubber product 5. At the same time, the lower ejector plate 23 lifts the rubber product 5 from the bottom.

[0049] Under the multi-directional force of bottom lifting and lateral lifting, the rubber product 5 deforms. Due to the elastic deformation characteristics of rubber, under the compression of multi-directional forces, the rubber product 5 gradually pushes the inner mold 6 outward. During the lateral lifting process, if the rubber product 5 has an irregular shape or encounters greater resistance, the spring 311 between the bottom of the wedge block 32 and the side top column 31 will compress or extend according to the actual resistance, providing elastic buffering and adaptive adjustment capabilities, so that the wedge block 32 can better conform to the surface of the rubber product 5 for lateral pushing, ensuring a smooth demolding process.

[0050] When the rubber product 5 undergoes sufficient deformation to completely expel the inner mold 6, the drive cylinder 21 in the lower ejector component 2 drives the drive rod 22 to descend, causing the lower ejector plate 23 and the side ejector plate 24 to fall back. The side ejector column 31 and the wedge block 32 of the side ejector component 3 also descend and reset. The negative pressure pump 44 stops working, the negative pressure suction cup 43 loses negative pressure, and releases its adsorption on the rubber product 5. At this point, the demolded rubber product 5 can be removed from the demolding chamber 1, completing the entire demolding process.

[0051] Finally, it should be noted that the electronic components in the drive cylinder 21, negative pressure pump 44, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between the electrical components in the above working principle to complete the electrical connection. They are all technologies known in the art.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-directional linkage ejection mechanism for rubber molds, comprising an ejection bin (1), characterized in that: A rubber product (5) is placed inside the demolding chamber (1). The two sides of the rubber product (5) are adsorbed and fixed by the negative pressure component (4). The bottom of the rubber product (5) is lifted and demolded by the lower top component (2). The bottom of the rubber product (5) is provided with side top components (3) on both sides. The lower top component (2) drives the side top component (3) to rise, thereby lifting and demolding the rubber product (5) laterally. The rubber product (5) deforms and squeezes the inner mold (6) outward.

2. The multi-directional linkage ejection mechanism for a rubber mold according to claim 1, characterized by: The top of the demolding chamber (1) is detachably fitted with a top cover (11).

3. The multi-directional linkage ejection mechanism for a rubber mold according to claim 1, characterized by: The lower top component (2) includes a drive cylinder (21), a drive rod (22) is mounted on the top output shaft of the drive cylinder (21), a lower top plate (23) is mounted on the top of the drive rod (22), and a horizontal side top plate (24) is mounted on the side of the drive rod (22).

4. The multi-directional linkage ejection mechanism for a rubber mold according to claim 3, characterized by: The top surface of the lower top plate (23) is fitted with a pad (231).

5. The multi-directional linkage ejection mechanism for a rubber mold according to claim 3, characterized by: The side-top component (3) includes a side-top column (31), and a wedge block (32) is installed on the top of the side-top column (31). The wedge block (32) laterally lifts the rubber product (5) through its top inclined surface.

6. The multi-directional linkage ejection mechanism for a rubber mold according to claim 5, characterized by: The bottom of the wedge block (32) is provided with a slot (321), the top of the side top post (31) is inserted into the slot (321), and a spring (311) is installed between the top of the side top post (31) and the inner wall of the slot (321).

7. The multi-directional linkage ejection mechanism for rubber molds of claim 1, wherein: The negative pressure assembly (4) includes a negative pressure tube (41), the upper end of which is connected to a negative pressure suction cup (43), and the lower end of which is connected to a negative pressure pump (44).

8. The multi-directional linkage ejection mechanism for a rubber mold according to claim 7, characterized by: A fixing plate (42) is attached to the back of the negative pressure suction cup (43), and the fixing plate (42) is installed on the inner wall of the demolding chamber (1).

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