A rubber rapid demolding vulcanization mold

Abstract

This application relates to the field of vulcanization mold technology, and in particular to a rubber rapid demolding vulcanization mold, including an upper mold, a middle mold, and a lower mold, all of which are installed on a vulcanizing machine. The bottom of the middle mold is provided with a locking groove that matches the platform of the lower mold. Columns are provided on both sides of the lower mold, which are inserted into the limiting holes of the middle mold to ensure precise alignment when the middle mold and the lower mold are closed and to reduce the probability of lateral displacement of the middle mold. The forming boss of the lower mold is engaged with the clearance hole of the middle mold to reduce rubber leakage. An excess material groove is provided on the upper surface of the middle mold to collect overflow rubber, reducing the accumulation of rubber material at the edges and the resulting uneven pressure. After vulcanization, the middle mold is lifted by contacting and engaging with the guide block of the lifting mechanism of the vulcanizing machine through the positioning flange on the side wall of the middle mold. The adhesion of the rubber is used to carry out a batch of rubber joints from the forming boss of the lower mold.

Description

Technical Field

[0001] This application relates to the field of vulcanization mold technology, and in particular to a rubber quick-release vulcanization mold. Background Technology

[0002] A vulcanizing machine is a key piece of equipment used for molding and vulcanizing materials such as rubber and plastics. Rubber parts need to be placed into the vulcanizing mold of the molding vulcanizing machine for vulcanization during the molding process.

[0003] In related technologies, the vulcanization molds for commonly used rubber parts consist of an upper mold and a lower mold. Typically, the rubber raw material is placed on the upper surface of the lower mold, and then the upper mold is pressed down to cooperate with the lower mold for hot-press vulcanization. After hot-press vulcanization, the upper mold is reset, and the rubber joints need to be manually removed from the lower mold one by one.

[0004] However, this method has the following drawbacks: manually removing the rubber joints one by one from the lower template is time-consuming and labor-intensive, resulting in low efficiency. Summary of the Invention

[0005] To address the inefficiency caused by manually removing rubber joints one by one from the lower mold, this application provides a rubber rapid demolding vulcanization mold.

[0006] The rubber rapid demolding and vulcanization mold provided in this application adopts the following technical solution:

[0007] A rapid demolding vulcanizing mold for rubber includes an upper mold plate and a lower mold plate, and a middle mold plate. The middle mold plate is disposed between the upper mold plate and the lower mold plate. The upper mold plate, the middle mold plate, and the lower mold plate are all heat-conducting plates. The upper mold plate, the middle mold plate, and the lower mold plate are all mounted on the worktable of a vulcanizing machine. The upper mold plate applies heat pressure to the middle mold plate. The surface of the lower mold plate is provided with several platforms. Each platform has several forming bosses on its side surface near the middle mold plate. The middle mold plate moves up and down relative to the lower mold plate. The middle mold plate is provided with several clearance holes. During heat pressing, the middle mold plate is located on the upper surface of the lower mold plate. The forming bosses pass through the clearance holes, and the rubber material is formed above the middle mold plate.

[0008] By adopting the above technical solution, after vulcanization, the rubber material covers the upper surface of the middle mold. The middle mold is actively raised by lifting and lowering, so that the batch of rubber joints moves with the middle mold. Through the adhesion of the rubber joints to the forming boss, the batch of rubber joints are brought out from the forming boss of the lower mold, realizing batch demolding. This solves the problem of low efficiency caused by the reliance on manual demolding in traditional vulcanizing molds. At the same time, the high temperature of the middle mold surface may cause burns, reducing the probability of burns to operators due to operation.

[0009] Preferably, the forming bosses are vertically connected and arranged on the upper surface of the platform, the bottom diameter of the forming bosses matches the diameter of the relief hole, and when the lower surface of the middle template contacts the upper surface of the lower template, the bottom edge of the forming bosses contacts and engages with the upper edge of the relief hole.

[0010] By adopting the above technical solution, the precise matching of the bottom diameter of the forming boss and the diameter of the relief hole ensures that the forming boss can be accurately inserted into the relief hole when the middle template and the lower template are in contact. The contact and locking fit between the bottom edge of the forming boss and the upper edge of the relief hole reduces the leakage of rubber material caused by edge misalignment and ensures that the internal geometry of the rubber joint is consistent after each vulcanization.

[0011] Preferably, the upper surface of the lower template is provided with a plurality of platforms spaced at intervals along the horizontal direction, the forming bosses are arranged on the upper surface of the platforms, the bottom of the middle template is provided with a plurality of locking grooves, the internal depth of the locking grooves matches the height of the platforms, the outline dimensions of the locking grooves match the outline dimensions of the platforms, and when the lower surface of the middle template contacts the upper surface of the lower template, the locking grooves engage with the platforms.

[0012] By adopting the above technical solution, the outline dimensions of the positioning groove are perfectly matched with the outline dimensions formed by several platforms, ensuring that when the middle template is pressed down, the side wall of the positioning groove contacts and precisely engages with the side wall of the platform. The internal depth of the positioning groove matches the height of the platform. When the lower surface of the middle template contacts the upper template, the positioning groove wraps around the platform, reducing the probability of the middle template loosening or slipping in the vertical direction, and indirectly improving the stability of hot pressing.

[0013] Preferably, the middle template is further provided with a plurality of limiting holes, which are arranged and distributed on both sides of the middle template. The lower template is vertically fixed with a plurality of columns, the positions of which match the positions of the limiting holes, and the outer diameter of which matches the diameter of the limiting holes. When the lower surface of the middle template contacts the upper surface of the lower template, the columns are inserted into the limiting holes.

[0014] By adopting the above technical solution, the diameters of the column and the limiting hole are precisely matched, ensuring that the column can be accurately inserted into the limiting hole when the middle template is pressed down and contacts the lower template. This further reduces the probability of lateral displacement of the middle template and ensures that the edges of the middle template and the lower template are aligned when they are closed.

[0015] Preferably, the surface of the template is provided with a material overflow groove, which includes an annular groove and an edge groove. The annular groove surrounds the relief hole, and the edge groove surrounds the outer periphery of the array of relief holes. The annular groove and the edge groove are in communication.

[0016] By adopting the above technical solution, the excess rubber material overflowing during the vulcanization process can be collected in real time, reducing the occurrence of uneven pressure caused by the accumulation of rubber material at the edge.

[0017] Preferably, the middle template is provided with positioning flanges on both sides, and the positioning flanges are positioned and cooperate with the lifting mechanism of the vulcanizing machine.

[0018] By adopting the above technical solution, the positioning flange and the lifting mechanism of the vulcanizing machine form a surface contact fit, which indirectly increases the contact area between the middle template and the vulcanizing machine, making it easier for the lifting mechanism of the vulcanizing machine to control the lifting of the middle template.

[0019] Preferably, the lower template is symmetrically provided with recessed portions, and the bottom of the recessed portions is provided with limiting grooves. The limiting grooves penetrate the lower surface of the lower template and are for connecting parts for external vulcanizing machines to pass through.

[0020] By adopting the above technical solution, the recessed part of the lower template provides a fixed space for the connector to connect and fix the lower template.

[0021] Preferably, the edges of the template are rounded.

[0022] By adopting the above technical solution, the rounded edges eliminate sharp corners, reducing the chance of operators being scratched when handling or cleaning up leftover materials, and improving production safety.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By lifting and lowering the middle template, a batch of rubber joints are disengaged from the forming boss of the lower template, realizing batch demolding, which significantly improves production efficiency and reduces the risk of burns when manually handling parts.

[0025] 2. Through precise matching of the forming boss and the clearance hole, as well as the contact locking mechanism, the precise positioning of the middle and lower mold plates when they are closed is achieved, which effectively reduces the leakage of rubber material and ensures that the internal geometry is consistent during each vulcanization.

[0026] 3. Overflowing material is collected through annular grooves and edge grooves, which effectively reduces the problem of uneven vulcanization pressure caused by rubber compound accumulation. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of the rubber rapid demolding vulcanizing mold installed on the vulcanizing machine in the embodiments of this application.

[0028] Figure 2 This is a schematic diagram of the structure after the template is raised in the embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the lower template and the workbench structure of the vulcanizing machine in the embodiments of this application.

[0030] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0031] Figure 5 This is a schematic diagram of the template structure in the embodiments of this application.

[0032] Figure 6 yes Figure 5 Enlarged schematic diagram of part B.

[0033] Figure 7 A schematic diagram of the bottom structure of the template in this embodiment.

[0034] Explanation of reference numerals in the attached drawings: 1. Lower template; 11. Platform; 111. Forming boss; 12. Column; 13. Recess; 131. Limiting groove; 2. Connector; 3. Fixing groove; 4. Middle template; 41. Relief hole; 42. Locking groove; 43. Limiting hole; 44. Excess material groove; 441. Annular groove; 442. Edge groove; 5. Positioning flange; 6. Guide block; 7. Guide groove; 8. Rounded corner; 9. Upper template. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0036] This application discloses a rubber rapid demolding vulcanization mold. (Refer to...) Figure 1 A rubber rapid demolding vulcanizing mold includes an upper mold plate 9 and a lower mold plate 1, as well as a middle mold plate 4. The upper mold plate 9, the middle mold plate 4, and the lower mold plate 1 are all installed on a vulcanizing machine.

[0037] Reference Figure 2Correspondingly, the middle template 4 is provided with several clearance holes 41, and the upper surface of the lower template 1 is provided with several forming bosses 111. During vulcanization and hot pressing, the clearance holes 41 of the middle template 4 and the forming bosses 111 of the lower template 1 are inserted and engaged. The lower surface of the middle template 4 contacts the upper surface of the lower template 1. The driving mechanism of the vulcanizing machine drives the upper template 9 to perform hot pressing on the middle template 4. After vulcanization, the middle template 4 is lifted in the vertical direction. The formed rubber joints are attached to the surface of the forming bosses 111 and move with the middle template 4 to detach from the forming bosses 111 of the lower template 1, realizing batch demolding and significantly improving production efficiency.

[0038] Reference Figure 3 In addition, the lower template 1 is fixed to the worktable of the vulcanizing machine by a connector 2, which is a bolt.

[0039] Reference Figure 4 Specifically, the lower template 1 is provided with two recesses 13, which are distributed along the longitudinal axis of symmetry of the lower template 1. The bottom of the recesses 13 is provided with a limiting groove 131 to provide fixing space for the bolts. The limiting groove 131 penetrates the upper and lower surfaces of the recesses 13. The width of the limiting groove 131 matches the width of the bolt tail post. The vulcanizing machine's worktable is provided with a fixing groove 3 that matches the width of the limiting groove 131. When the lower template 1 is placed on the vulcanizing machine's worktable, the limiting groove 131 and the fixing groove 3 are aligned, so that the bolts can pass directly through the limiting groove 131 of the recesses 13 and through the fixing groove 3. The nut is then tightened, and the lower surface of the nut abuts against the upper surface of the recesses 13, thereby fixing the lower template 1 on the worktable.

[0040] Specifically, four platforms 11 are provided on the upper surface of the lower template 1. The platforms 11 adopt a long strip structure. The long side and the wide side of the four corners of the platform 11 are provided with continuous rounded corners 8 transition arc surfaces. On the upper surface of each platform 11, that is, on the side surface near the middle template 4, two rows of forming bosses 111 are vertically fixed. Each row of forming bosses 111 has 8 forming bosses 111. The cross-section of the forming bosses 111 is set in a stepped shape, and the forming bosses 111 are distributed in a regular array.

[0041] Reference Figure 5 On the other hand, each relief hole 41 of the middle template 4 corresponds one-to-one with the forming boss 111 of the lower template 1, and the diameter of the relief hole 41 matches the bottom diameter of the forming boss 111. When the vulcanization process is carried out, when the lower surface of the middle template 4 and the upper surface of the lower template 1 are in closed contact, the forming boss 111 is inserted into the relief hole 41 and engages with the relief hole 41. The bottom edge of the forming boss 111 is tightly fitted with the upper edge of the relief hole 41. The physical limit ensures the cavity closing accuracy, effectively reduces the leakage of rubber material caused by misalignment, and ensures the consistency of the internal geometry during each vulcanization.

[0042] Correspondingly, after vulcanization, the rubber material covers the upper surface of the middle mold plate 4. The middle mold plate 4 is actively raised by making lifting and lowering movements, so that the batch of rubber joints moves with the middle mold plate 4. Through the adhesion of the rubber joints to the forming boss 111, the batch of rubber joints are taken out from the forming boss 111 of the lower mold plate 1, thus realizing batch demolding.

[0043] Reference Figure 7 Furthermore, the lower surface of the middle template 4 is provided with a locking groove 42. The outline of the locking groove 42 matches the outer outline formed by the four platforms 11 vertically fixed on the upper surface of the lower template 1. The groove depth of the locking groove 42 is equal to the height of the platform 11. When the vulcanization process is carried out, when the lower surface of the middle template 4 and the upper surface of the lower template 1 are in closed contact, the circumferential sidewall of the locking groove 42 and the sidewall of the platform 11 form an all-round fit contact. The locking groove 42 wraps around the platform 11, reducing the probability of the middle template 4 loosening or slipping in the vertical direction.

[0044] Furthermore, two sets of longitudinally arranged columns 12 are symmetrically arranged along the longitudinal central axis on both sides of the lower template 1. Each set of columns 12 has four columns, and the height of the two middle columns 12 in each set of columns 12 is higher than that of the columns on both sides.

[0045] In addition, several limiting holes 43 are symmetrically arranged on both sides of the middle template 4. The number and position of the limiting holes 43 correspond one-to-one with the columns 12 on both sides of the lower template 1. The diameter of the limiting holes 43 matches the outer diameter of the columns 12. When the vulcanization process is carried out, when the lower surface of the middle template 4 and the upper surface of the lower template 1 are in closed contact, the columns 12 are accurately inserted through the guiding effect of the limiting holes 43, which further reduces the probability of the middle template 4 shifting laterally and ensures that the edges of the middle template 4 and the lower template 1 are aligned when they are closed.

[0046] Reference Figure 6 Furthermore, the surface of the middle template 4 is provided with a material overflow groove 44, which includes an annular groove 441 and an edge groove 442. An annular groove 441 is provided around each relief hole 41 of the middle template 4, forming a concentric circle around the center of the relief hole 41. A continuous edge groove 442 is provided around the outer periphery of the entire array of relief holes 41. The outline of the edge groove 442 matches the outline of the platform 11 of the lower template 1. The edge groove 442 is connected to all the annular grooves 441. The rubber material overflowing during vulcanization is collected by the annular grooves 441 and the edge grooves 442, reducing the accumulation of rubber material at the edge of the relief hole 41, which leads to uneven pressure distribution and overflow.

[0047] On the other hand, in this embodiment, the middle template 4 and the lower template 1 are manufactured in the same batch, and the geometric shape and size of the outer contours of the middle template 4 and the lower template 1 are matched to ensure that when the middle template 4 and the lower template 1 are in contact and closed during vulcanization, the lower surface of the middle template 4 and the upper surface of the lower template 1 are closely attached and form a flush outer surface. However, this highly matched structural design results in a significant reduction in the exposed operating area of ​​the middle template 4 during the lifting and lowering process, and the middle template 4 has a certain weight, which increases the difficulty of operation for the operator. This application adopts the following solution to solve the above-mentioned technical problems.

[0048] Relatedly, positioning flanges 5 are provided on both sides of the intermediate template 4, and the positioning flanges 5 are positioned and cooperate with the lifting mechanism of the vulcanizing machine. The side walls of the intermediate template 4 are symmetrically provided with positioning flanges 5 of the same specification along the longitudinal center line, which are integrated with the intermediate template 4 by horizontal fixed connection. The positioning flanges 5 are long rectangular block structures, and the upper and lower surfaces of the positioning flanges 5 are horizontally flush with the upper and lower surfaces of the intermediate template 4. The width of the positioning flanges 5 is exactly the same as the width of the side walls of the intermediate template 4.

[0049] Furthermore, the vulcanizing machine is equipped with a lifting mechanism, and the lifting mechanism is symmetrically equipped with guide blocks 6. The edge of the guide block 6 is provided with a guide groove 7. The side of the positioning flange 5 and the guide groove 7 of the guide block 6 form a surface contact fit. The side wall of the positioning flange 5 contacts the side wall of the guide groove 7, which indirectly increases the contact area between the intermediate template 4 and the vulcanizing machine. The width, height and outline dimensions of the positioning flange 5 match the guide groove 7 of the guide block 6, ensuring that the guide groove 7 of the guide block 6 contacts the positioning flange 5 in the vertical direction, forming a fit and guiding cooperation with the guide block 6.

[0050] To further explain, when the lifting mechanism of the vulcanizing machine drives the guide block 6 to move upward, the guide groove 7 of the guide block 6 contacts the positioning flange 5, causing the positioning flange 5 to move upward. Since the positioning flange 5 is fixedly connected to the middle template 4, the middle template 4 is also driven to move upward.

[0051] Similarly, when vulcanization is complete, the middle template 4 is actively raised by making a lifting motion, so that the batch of rubber joints moves with the middle template 4 and brings the batch of rubber joints out from the forming boss 111 of the lower template 1. Using the above-mentioned lifting method, when the lifting mechanism drives the guide block 6 to move vertically, the guide groove 7 of the guide block 6 drives the side of the positioning flange 5 to slide, directly transmitting power to the middle template 4 to rise directly, which brings convenience to the operator.

[0052] In addition, the edges of the middle template 4 are rounded 8. The rounded corners 8 eliminate sharp edges, reducing the risk of operators being scratched when handling or cleaning up leftover materials, and improving production safety.

[0053] The implementation principle of a rubber rapid demolding vulcanization mold in this application embodiment is as follows:

[0054] This application provides a rubber rapid demolding vulcanizing mold that can achieve batch demolding, solving the problem of low efficiency caused by traditional vulcanizing molds relying on manual demolding one by one. At the same time, the high temperature of the intermediate mold surface may cause burns, reducing the probability of burns to operators due to operation.

[0055] Specifically, a rapid demolding vulcanizing mold for rubber includes an upper mold plate and a lower mold plate, characterized in that it includes a middle mold plate, and the upper mold plate, lower mold plate, and middle mold plate are all mounted on a vulcanizing machine. When the vulcanizing machine is working, the middle mold plate and the lower mold plate are engaged with the forming boss through clearance holes, and the upper mold plate applies pressure to the middle mold plate through the driving mechanism of the vulcanizing machine to complete the vulcanization molding.

[0056] The upper surface of the lower template is provided with forming bosses, which are regularly arrayed on four long strip platforms. The relief holes of the middle template correspond one-to-one with the forming bosses, and the hole diameter matches the bottom diameter of the boss. When closed, the bosses are inserted into the relief holes, and the edges fit tightly, reducing the leakage of adhesive and ensuring the closure accuracy of the cavity.

[0057] During the vulcanization process, the lower surface of the middle mold and the upper surface of the lower mold are closely attached to form a flush outer surface. The platform is wrapped by the locking groove at the bottom of the middle mold to reduce vertical loosening. The upper mold applies pressure, and the rubber material is formed in the sealed cavity. The overflowing rubber material is collected by the excess material groove on the surface of the middle mold, including the annular groove and the edge groove, to reduce uneven pressure distribution or overflow.

[0058] After vulcanization, the middle mold is actively lifted by the lifting mechanism of the vulcanizing machine. Due to the adhesion of the rubber joint to the forming boss, the middle mold lifts the rubber joint to detach from the lower mold, realizing batch demolding and significantly improving efficiency.

[0059] The lower template is fixed to the vulcanizing machine workbench with bolts. The limiting groove at the bottom of the recess of the lower template is aligned with the fixing groove of the workbench, and the bolt tail is matched with the width of the limiting groove to ensure that it is firmly fixed and accurately positioned.

[0060] The columns on both sides of the lower template engage with the limiting holes, and the limiting holes of the middle template are aligned with the columns of the lower template. The columns are inserted into the limiting holes for guidance, reducing lateral offset and ensuring edge alignment when closed.

[0061] Positioning flanges are provided on the side walls of the middle template, and these flanges engage with the guide blocks of the vulcanizing machine's lifting mechanism. During lifting, the guide grooves of the guide blocks drive the positioning flanges, directly transmitting power to the middle template, thus improving lifting stability and ease of operation.

[0062] In addition, the edges of the middle template are rounded to eliminate sharp corners and reduce the risk of injury to operators.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rubber rapid demolding vulcanizing mold, comprising an upper mold plate (9) and a lower mold plate (1), characterized in that, The system includes a middle template (4), which is located between the upper template (9) and the lower template (1). The upper template (9), the middle template (4), and the lower template (1) are all heat-conducting plates. The upper template (9), the middle template (4), and the lower template (1) are all installed on the worktable of the vulcanizing machine. The upper template (9) applies heat pressure to the middle template (4). The surface of the lower template (1) is provided with several platforms (11). Each platform (11) has several forming bosses (111) on its side surface near the middle template (4). The middle template (4) moves up and down relative to the lower template (1). The middle template (4) is provided with several clearance holes (41). During heat pressing, the middle template (4) is located on the upper surface of the lower template (1). The forming bosses (111) pass through the clearance holes (41). Rubber material is formed above the middle template (4).

2. The rubber rapid demolding vulcanizing mold according to claim 1, characterized in that, The forming boss (111) is vertically connected and arranged on the upper surface of the platform (11). The bottom diameter of the forming boss (111) matches the diameter of the relief hole (41). When the lower surface of the middle template (4) contacts the upper surface of the lower template (1), the bottom edge of the forming boss (111) contacts and engages with the upper edge of the relief hole (41).

3. The rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The upper surface of the lower template (1) is provided with a plurality of platforms (11) spaced horizontally. The forming bosses (111) are arranged on the upper surface of the platforms (11). The bottom of the middle template (4) is provided with a plurality of locking grooves (42). The internal depth of the locking grooves (42) matches the height of the platforms (11). The outline size of the locking grooves (42) matches the outline size of the platforms (11). When the lower surface of the middle template (4) contacts the upper surface of the lower template (1), the locking grooves (42) engage with the platforms (11).

4. The rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The middle template (4) is also provided with a number of limiting holes (43), which are arranged and distributed on both sides of the middle template (4). The lower template (1) is vertically fixed with a number of columns (12). The position of the column (12) matches the position of the limiting hole (43), and the outer diameter of the column (12) matches the diameter of the limiting hole (43). When the lower surface of the middle template (4) contacts the upper surface of the lower template (1), the column (12) and the limiting hole (43) are inserted and engaged.

5. A rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The surface of the template (4) is provided with a material overflow groove (44), which includes an annular groove (441) and an edge groove (442). The annular groove surrounds the relief hole (41), and the edge groove (442) surrounds the outer periphery of the array of several relief holes (41). The annular groove (441) and the edge groove (442) are in communication.

6. A rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The middle template (4) is provided with positioning flanges (5) on both sides, and the positioning flanges (5) are positioned and cooperate with the lifting mechanism of the vulcanizing machine.

7. A rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The lower template (1) is symmetrically provided with recessed portions (13), and the bottom of the recessed portion (13) is provided with a limiting groove (131). The limiting groove (131) penetrates the lower surface of the lower template (1), and the limiting groove (131) is provided for the connecting piece (2) of the external vulcanizing machine to pass through.

8. A rubber rapid demolding vulcanizing mold according to claim 2, characterized in that, The edges of the middle template (4) are rounded (8).

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