A vulcanizing machine for rubber production

Abstract

The present invention relates to the technical field of rubber product processing, and specifically proposes a vulcanizing machine for rubber production; the vulcanizing machine comprises a mold frame, a vulcanizing mold assembled on the mold frame, and a discharging assembly that cooperates with the vulcanizing mold to automatically discharge rubber strips; the vulcanizing machine provided by the present invention is based on an existing vulcanizing mold with multiple vulcanizing stations, and is equipped with a discharging assembly, which can replace manual work to complete the manual curling and discharging operations of the rubber strips, greatly reducing the workload of manual simple repetitive operations, improving the automation and continuity of processing, and facilitating improved overall processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rubber product processing, and particularly provides a vulcanizing machine for rubber production. Background Art

[0002] Rubber vulcanization is the process of chemically cross-linking the macromolecular chains in rubber under certain temperature and pressure conditions, forming a three-dimensional network structure. This effectively improves the rubber material's various physical and mechanical properties, such as strength, elasticity, wear resistance, and aging resistance. Rubber vulcanization can be performed using either single vulcanization or one-shot vulcanization. Single vulcanization involves vulcanizing the rubber after it has been formed, while one-shot vulcanization involves vulcanizing the rubber during the molding process.

[0003] Compared with single vulcanization, one-time molding vulcanization has relatively lower vulcanization condition requirements and is commonly used in the processing and production of molded products such as rubber rings and rubber pads. Under the existing technology, rubber rings are generally molded and vulcanized in one go through a heated mold, and in order to achieve batch molding processing, the heated mold generally has multiple mold stations. The material used for the sealing ring is a rubber strip, and the rubber ring is ring-shaped. When discharging, manual discharging is generally adopted, that is, the rubber strip needs to be placed in the mold manually and the rubber strip needs to be manually curled into a ring. This not only increases the workload of manual repetitive operations, but also affects the automation and continuity of the vulcanization production process, affecting production efficiency. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a vulcanizing machine for rubber production, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a vulcanizing machine for rubber production, which is used to vulcanize rubber strips into rubber rings, and the vulcanizing machine includes: a mold frame; a vulcanizing mold, which is assembled on the mold frame for rubber vulcanization processing, including a plurality of vulcanization stations each consisting of an upper and lower mold; and a discharge assembly; the discharge assembly includes a lifting frame, and the lifting frame includes a lifting frame, on which a plurality of pre-storage bins equal in number to the vulcanization stations are fixed, and the pre-storage bins are used to vertically stack and store rubber strips; the lifting frame is equipped with a plurality of The rubber strips are placed one by one into the curling discharge cylinders at the lower mold position in multiple vulcanization stations, and the multiple curling discharge cylinders are arranged in a one-to-one corresponding manner with multiple pre-storage bins; the curling discharge cylinder includes a coil guide cylinder, and a ring groove is provided near the bottom end of the coil guide cylinder to guide the rubber strips to be curled into rubber rings, and the bottom end of the coil guide cylinder is equipped with a multi-petal support plate for supporting the rubber rings; each pre-storage bin is equipped with a pushing component that pushes the pre-stored rubber strips into the ring groove one by one; the lifting frame is also equipped with a discharging mechanism that synchronously drives the rubber rings in multiple coil guide cylinders to complete the discharging.

[0006] Preferably, the coil guide cylinder includes a connecting guide column fixed at the bottom end of the lifting frame, a central cylinder fixed at the bottom end of the connecting guide column, and a side surrounding cylinder coaxially arranged and fixed on the outer wall of the central cylinder; the annular groove is composed of an annular cavity surrounded by the central cylinder and the side surrounding cylinder; the side surrounding cylinder is connected to the pre-storage bin; and the multi-petal support plate is assembled on the side surrounding cylinder.

[0007] Preferably, a feed opening is provided on the side wall of the side enclosure tube, and a docking joint extending toward the feed opening is provided on one side of the bottom of the pre-storage bin. The rubber strip is pushed from the feed opening to the annular groove through the docking joint, and the material guiding direction of the docking joint is tangential to the annular groove.

[0008] Preferably, a starting bin is provided at the side of the bottom of the pre-storage bin relatively away from the docking joint, and a travel hole is provided at the bottom end of the pre-storage bin extending from the starting bin to the docking joint; the pushing assembly is assembled at the bottom of the starting bin, and the pushing assembly includes a pushing part located inside the pre-storage bin, and the pushing part starts from the starting bin, moves along the travel hole, and pushes the rubber strip from the docking joint through the feed opening to the annular groove.

[0009] Preferably, the multi-petal support plate includes a plurality of support plate pieces distributed circumferentially around the side enclosure tube, the support plate pieces are in a fan-ring structure that can extend to the bottom opening of the annular groove, and the plurality of support plate pieces are all installed on the side enclosure tube along the radial sliding fit of the side enclosure tube.

[0010] Preferably, the discharge mechanism includes a lifting and lowering stroke plate, a driving cylinder, a connecting rod, a return spring and a top contact cylinder mounted on each coil guide cylinder; the central cylinders of the multiple coil guide cylinders are fixed on the stroke plate; the driving cylinder is vertically slidably mounted on the connecting guide column; the top contact cylinder is key-fitted and slidably mounted on the central cylinder, and is located above the side cylinder; the return spring is sleeved on the central cylinder, and the two ends of the return spring are respectively fixed on the top ends of the central cylinder and the top contact cylinder; a connecting rod is hinged between the driving cylinder and each support plate piece in the multi-petal support plate; when the stroke plate descends, the driving cylinder first drives the support plate piece to move away from the bottom opening of the annular groove through the connecting rod, and then the driving cylinder presses down the top contact cylinder, and the bottom of the top contact cylinder extends into the annular groove.

[0011] Preferably, a limiting top ring is provided on the top of the side enclosure tube, and a plurality of notches are provided on the limiting top ring in a circumferential distribution; a plurality of top contact feet are provided on the bottom end of the top contact tube, extending into the plurality of notches in a one-to-one correspondence; when the top end of the top contact tube is not pressed down and contacted by the driving tube, the lower end surface of the top contact foot is flush with the inner end surface of the limiting top ring.

[0012] Preferably, the pushing member includes a moving block that moves along the stroke hole, and a spring push piece for pushing the rubber strip and a flexible pad for padding the rubber strip stacking layer are respectively fixed at the front end and rear end positions of the moving block in the pushing direction, and the spring push piece is L-shaped.

[0013] Preferably, the mold frame includes a position change frame and a mold closing frame, the vulcanization mold includes a lower mold assembly horizontally slidably mounted on the position change frame and an upper mold assembly vertically driven and mounted on the mold closing frame, and multiple vulcanization stations are composed of the upper mold assembly and the lower mold assembly.

[0014] The above technical solution has the following advantages or beneficial effects: The present invention provides a vulcanizing machine for rubber production, which is based on an existing vulcanizing mold with multiple vulcanizing stations and is equipped with a discharge assembly, and the discharge assembly is provided with a pre-storage bin, a pushing component, a curling discharge barrel and a discharge mechanism. The rubber strips can be pre-stacked and stored through the pre-storage bin, and the rubber strips in the pre-storage bin can be pushed one by one into the curling discharge barrel through the pushing component to complete the automatic guided curling of the rubber ring and the alignment of the discharge. The double-safety discharge design of the discharge mechanism can ensure that the rubber ring is accurately placed in the cavity of the lower mold, thereby replacing manual work to complete the manual curling and discharge operations of the rubber strips, greatly reducing the workload of simple manual repetitive operations, improving the automation and continuity of processing, and helping to improve the overall processing efficiency. In addition, the discharge assembly has a simple structure and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a vulcanizing machine for rubber production provided by the present invention.

[0017] Figure 2 The figure is a top view of a vulcanizing machine for rubber production provided by the present invention.

[0018] Figure 3 It is a three-dimensional structural diagram of the lower mold assembly.

[0019] Figure 4 It is a three-dimensional structural diagram of the frame module.

[0020] Figure 5 This is a three-dimensional structural diagram of the central module.

[0021] Figure 6 It is a three-dimensional structural diagram of the upper mold assembly.

[0022] Figure 7 It is a three-dimensional structural diagram of the discharge assembly.

[0023] Figure 8 yes Figure 7 A partial enlarged view of point A in the middle.

[0024] Figure 9 It is the bottom view of the unloading assembly.

[0025] Figure 10 It is a three-dimensional structural diagram of the assembly of four curling discharge barrels and the discharge mechanism.

[0026] Figure 11 It is a three-dimensional schematic diagram of the relative positions of the relatively coordinated pre-storage silo, pushing component and curling discharge barrel.

[0027] Figure 12 It is a three-dimensional structural diagram of the push component.

[0028] Figure 13 It is a three-dimensional structural diagram of the assembly of the side cylinder and the center cylinder.

[0029] Figure 14 It is a three-dimensional structural diagram of the return spring and the top contact cylinder assembled on the central cylinder.

[0030] Figure 15 This is a diagram of the morphological changes of the rubber strip during the vulcanization molding process.

[0031] In the figure: 1. Mold frame; 11. Positioning frame; 12. Clamping frame; 2. Vulcanizing mold; 21. Lower mold assembly; 22. Frame module; 221. No. 1 mold base; 222. Frame mold; 23. Center module; 231. No. 2 mold base; 232. Center mold; 24. Upper mold assembly; 241. No. 3 mold base; 242. Upper forming mold; 3. Unloading assembly; 31. Lifting frame; 311. Support frame; 312. Lifting frame; 313. Square guide column; 314. Layer; 315. Connecting column; 316. Wing plate; 32. Pre-storage bin; 321. Starting bin; 322. Butt joint; 323. Stroke hole; 33. Pushing group Parts; 331, cylinder seat; 332, pushing cylinder; 333, pushing member; 334, moving block; 335, flexible pad; 336, spring push piece; 34, curling discharge cylinder; 35, coil guide cylinder; 351, connecting guide column; 352, center cylinder; 353, side cylinder; 354, limiting top ring; 355, notch; 356, feed opening; 357, guide pin; 36, multi-petal support plate; 361, support plate; 362, sliding part; 37, discharge mechanism; 371, driving cylinder; 372, stroke plate; 373, driving cylinder; 374, connecting rod; 375, return spring; 376, top contact cylinder; 377, top contact foot. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 and Figure 2 As shown, a vulcanizing machine for rubber production is used to vulcanize rubber strips into rubber rings, which are vulcanized in one step. The vulcanizing machine includes a mold frame 1, a vulcanizing mold 2 assembled on the mold frame 1, and a discharge assembly 3 for completing the discharge of the rubber strip; the mold frame 1 includes a position change frame 11 and a mold clamping frame 12, the vulcanizing mold 2 includes a lower mold assembly 21 horizontally slidably mounted on the position change frame 11 and an upper mold assembly 24 vertically driven and mounted on the mold clamping frame 12, the mold clamping frame 12 is used to drive the upper mold assembly 24 and the lower mold assembly 21 to complete relative alignment and mold clamping, and the position change frame 11 is used to drive the lower mold assembly 21 to be displaced and separated in the horizontal direction relative to the upper mold assembly 24 to facilitate loading and unloading; it should be noted that hydraulic cylinders can be used as power structures in both the position change frame 11 and the mold clamping frame 12, and the power structure is not shown in the accompanying drawings.

[0035] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, it should be noted that the vulcanization mold 2 composed of the lower mold assembly 21 and the upper mold assembly 24 is an existing hot pressing vulcanization molding mold; the lower mold assembly 21 includes a frame module 22 and a center module 23; the frame module 22 includes a square mold base 221 slidably mounted on the transposition frame 11, and four frame molds 222 are fixed on the mold base 221 around the center circumference. The center module 23 includes a mold base 231 that is vertically slidably mounted below the mold base 221 through a guide column. Four center molds 232 corresponding to the four frame molds 222 are fixed on the mold base 231. A hydraulic cylinder can be vertically installed at the bottom of the mold base 221, and the output end of the hydraulic cylinder is fixed on the mold base 231, so that the mold base 231 can be driven to rise and fall. When the mold base 231 is relative When the No. 1 mold base 221 is in the highest position, the center mold 232 extends into the corresponding frame mold 222 to cooperate with each other to form a lower mold, with a total of four lower molds. During the processing, the molded rubber ring will adhere to the entire molding surface of the lower mold, and the center mold 232 will descend with the No. 2 mold base 231, so that it is separated from the rubber ring to facilitate the removal of the rubber ring; the upper mold assembly 24 includes a No. 3 mold base 241 vertically slidably mounted on the mold clamping frame 12 by a guide rod and four upper forming molds 242 fixed on the lower end surface of the No. 3 mold base 241. When the lower mold assembly 21 is moved to the bottom of the upper mold assembly 24 by the shifting frame 11, the four upper forming molds 242 are distributed one by one above the four lower molds as four upper molds, forming four vulcanization stations composed of upper and lower molds, which can carry out batch vulcanization molding processing. It should be added that the rubber needs to be heated during the vulcanization process. In this embodiment, combined with the existing technology, the heating structure can be evenly arranged on the four upper molding dies 242 of the upper mold assembly 24.

[0036] like Figure 2 、 Figure 7 and Figure 9As shown, the discharge assembly 3 is distributed in sequence on the transverse movement path of the transposition frame 11 relative to the upper mold assembly 24; the discharge assembly 3 includes a lifting frame 31, and the lifting frame 31 includes a supporting frame 311 and a lifting frame 312. A hydraulic cylinder can be vertically installed on the top of the supporting frame 311. The hydraulic cylinder is not shown in the figure. The lifting frame 312 includes a square guide column 313 vertically slidably installed on the supporting frame 311. The bottom end of the square guide column 313 is horizontally fixed with a layer plate 314 by bolts. The layer plate 314 can be fixed to the output end of the hydraulic cylinder at the top of the supporting frame 311 by bolts. There is a wing plate 316 distributed below 314, and four connecting columns 315 are vertically connected between the layer plate 314 and the wing plate 316 by bolts; four pre-storage bins 32 are welded on the wing plate 316, and the four pre-storage bins 32 are evenly distributed circumferentially. The pre-storage bins 32 are used to vertically stack and store rubber strips, and the width of the pre-storage bins 32 is slightly larger than the width of the rubber strips; the lifting frame 312 is equipped with four curling discharge barrels 34 that place the rubber strips one by one at the lower mold position of the four vulcanization stations, and the four curling discharge barrels 34 are docked with the four pre-storage bins 32 in a one-to-one correspondence.

[0037] like Figure 10 、 Figure 11 and Figure 13 As shown, the curling and unwinding cylinder 34 includes a coiling guide cylinder 35; the coiling guide cylinder 35 includes a connecting guide column 351 vertically fixed to the bottom end of the wing plate 316 by bolts, a central cylinder 352 fixed to the bottom end of the connecting guide column 351 by bolts, and a side surrounding cylinder 353 coaxially arranged and fixed to the outer wall of the central cylinder 352; a limiting top ring 354 is provided on the top of the side surrounding cylinder 353, and the side surrounding cylinder 353 is welded to the outer wall of the central cylinder 352 through the limiting top ring 354. The annular cavity enclosed by the central cylinder 352 and the side surrounding cylinder 353 constitutes an annular groove for guiding the rubber strip to curl into a rubber ring. The bottom is open, so the bottom end of the coil guide cylinder 35 is equipped with a multi-petal support plate 36 for supporting the rubber ring; four guide pins 357 uniformly distributed circumferentially are welded on the outer wall of the side cylinder 353, and the guiding direction of the guide pins 357 is set along the radial direction of the side cylinder 353; the multi-petal support plate 36 includes four support plate pieces 361 distributed circumferentially around the side cylinder 353, and the support plate piece 361 is a fan ring structure that can extend to the bottom opening of the annular groove. A sliding part 362 is welded on the support plate piece 361, and the four support plate pieces 361 are slidably installed on the four guide pins 357 one by one through the sliding part 362.

[0038] like Figure 9 、 Figure 11 and Figure 13As shown, a feed opening 356 is provided on the side wall of the side enclosure 353, and a docking joint 322 extending toward the feed opening 356 is provided on one side of the bottom of the pre-storage bin 32, and the material guiding direction of the docking joint 322 is tangential to the annular groove. Each pre-storage bin 32 is equipped with a pushing assembly 33 that pushes the pre-stored rubber strips into the annular groove one by one; a starting bin 321 is provided on the side of the bottom of the pre-storage bin 32 relatively away from the docking head 322, and a stroke hole 323 is provided at the bottom of the pre-storage bin 32 extending from the starting bin 321 to the docking head 322; the pushing assembly 33 includes a cylinder seat 331 fixed to the bottom of the starting bin 321 by bolts, a pushing cylinder 332 hinged to the bottom of the cylinder seat 331 by a vertical axis, and a pushing member 333 assembled at the output end of the pushing cylinder 332. In the initial state, the pushing member 333 is located in the starting bin 321, and is used to avoid the stacked rubber strips. The pushing member 333 starts from the starting bin 321, moves along the stroke hole 323, and pushes the rubber strip from the docking head 322 through the feed opening 356 into the annular groove.

[0039] like Figure 8 、 Figure 11 and Figure 12 As shown, the pusher 333 includes a movable block 334 that moves along the travel hole 323 and is hinged to the output end of the push cylinder 332. A spring push piece 336 for pushing the rubber strip is welded to the front end of the pusher block 334 in the pushing direction. A flexible pad 335 for supporting the rubber strip stack is glued and fixed to the rear end. The spring push piece 336 is L-shaped. To reduce the overall space occupied by the discharge assembly 3, in this embodiment, the pre-storage bin 32 is designed with a curved structure. The flexible pad 335 is made of rubber and has two sets of slits to facilitate deformation. As the pusher 333 moves within the pre-storage bin 32, both the spring push piece 336 and the flexible pad 335 can adaptively deform.

[0040] like Figure 1 、 Figure 2 、 Figure 7 、 Figure 10 、 Figure 13 and Figure 14As shown, the lifting frame 312 is also equipped with a discharge mechanism 37 that synchronously drives the rubber rings in multiple coil guide cylinders 35 to complete the discharge. The discharge mechanism 37 includes a driving cylinder 371 vertically fixed to the wing plate 316 by bolts, a stroke plate 372 horizontally fixed to the output end of the driving cylinder 371 by bolts, a driving cylinder 373, a connecting rod 374, a return spring 375 and a top contact cylinder 376 installed on each coil guide cylinder 35; the central cylinder 352 of the four coil guide cylinders 35 is fixed to the bottom end of the stroke plate 372 by bolts; the driving cylinder 373 is vertically slidably mounted on the connecting guide column 351; the top contact cylinder 376 is located above the side surrounding cylinder 353 and is slidably mounted in a key-fitting manner. On the center cylinder 352; the return spring 375 is sleeved on the center cylinder 352, and the two ends of the return spring 375 are respectively welded to the top of the center cylinder 352 and the top contact cylinder 376; a connecting rod 374 is hinged between the driving cylinder 373 and the sliding part 362 on each support plate 361 in the multi-petal support plate 36; when the stroke plate 372 descends, the driving cylinder 373 first drives the support plate 361 to move away from the bottom opening of the annular groove through the connecting rod 374, and then the driving cylinder 373 presses down the top contact cylinder 376, and the bottom of the top contact cylinder 376 extends into the annular groove. The limiting top ring 354 is provided with four notches 355 evenly distributed around the circumference; the bottom end of the top contact cylinder 376 is provided with four top contact feet 377 which extend into the four notches 355 in a one-to-one correspondence, and the lower end surface of the top contact foot 377 is adapted to the contour of the notch 355; when the top end of the top contact cylinder 376 is not pressed down and contacted by the driving cylinder 373, the lower end surface of the top contact foot 377 is flush with the inner end surface of the limiting top ring 354, and the lower end surface of the top contact foot 377 and the inner end surface of the limiting top ring 354 can jointly constitute a guiding rubber strip to become the upper guiding surface of the rubber ring.

[0041] The present invention provides a vulcanizing machine for rubber production, which can perform a one-time molding and vulcanization process on rubber rings. On the basis of the existing vulcanization mold 2, a feeding assembly 3 for automatic feeding is equipped, which can replace manual work to complete the one-time automatic feeding of multiple vulcanization stations. The material used for the rubber ring is a rubber strip cut into sections according to the required length. During the processing, the rubber strip needs to be curled into a rubber ring and placed in the lower mold. Finally, the rubber ring is formed after vulcanization through the mold. Its morphological change process can be seen Figure 15 Before processing, equal amounts of rubber strips can be pre-stacked in the four pre-storage bins 32 until they are full, and then replenished manually at regular intervals. The specific processing process can be divided into several steps.

[0042] First, driven by the position-changing frame 11 , the lower die assembly 21 moves to the position directly below the four curling discharge barrels 34 for automatic alignment of the discharge.

[0043] Then, the pushing assembly 33 automatically pushes the rubber strip at the bottom of the pre-storage bin 32 into the corresponding curling discharge barrel 34; specifically, the pushing cylinder 332 pushes the pushing member 333, so that the pushing member 333 moves from the starting bin 321 to the bin of the pre-storage bin 32, the moving block 334 moves along the stroke hole 323, the spring push piece 336 pushes the rubber strip at the bottom to move forward, and the flexible pad 335 pads and separates the rubber strips other than the bottom so that the pushing member 333 can return and reset. As the pushing is carried out, the rubber strip passes through the feed opening 356 under the guidance of the docking head 322 and automatically curls in the annular groove under the guidance of the annular groove. When the extension of the pushing cylinder 332 is the maximum, the L-shaped spring push piece 336 is mounted between the two ends of the rubber ring, and the shape design of the spring push piece 336 avoids interference with the automatic curling of the rubber strip. At this point, through pushing, the rubber strip is automatically curled into a rubber ring and is conveyed to the top of the corresponding lower mold position.

[0044] Subsequently, with the cooperation of the lifting frame 31, the rubber ring pushed into the four curling discharge cylinders 34 is automatically discharged through the discharge mechanism 37; specifically, under the downward drive of the lifting frame 31, the four curling discharge cylinders 34 are lowered accordingly, and the distance between them and the lower mold is pulled closer, so that the rubber ring can fall directly into the cavity of the lower mold, avoiding the rubber ring from returning to the shape of a rubber strip during the discharge process; then, the driving cylinder 371 drives the stroke plate 372 to descend, and the stroke plate 372 synchronously drives the four driving cylinders 373 to descend, and the driving cylinder 373 drives the support plate 361 to slide toward the center away from the side surrounding cylinder 353 through the four connecting rods 374. , so that the bottom opening of the annular groove opens. As the driving cylinder 373 continues to descend, the driving cylinder 373 will press down the top contact cylinder 376, so that the top contact foot 377 passes through the notch 355 and extends into the annular groove. Normally, when the four supporting plates 361 completely avoid the bottom opening of the annular groove, the rubber ring will automatically fall into the cavity of the lower mold under the action of gravity. However, considering that the curled and deformed rubber ring may produce elastic contact with the side wall of the annular groove, the rubber ring may be stuck in the annular groove. At this time, the top contact foot 377 extends toward the annular groove, and it will automatically touch and push the rubber ring to fall into the lower mold cavity, making a double-insurance discharge design to ensure smooth discharge.

[0045] After the rubber ring is discharged, the interference of the rubber ring with the return reset of the spring push piece 336 is released. Then, the pushing cylinder 332 is started again, driving the pushing member 333 to return to the starting bin 321. After the pushing member 333 avoids, the stacked rubber strips are automatically unloaded, thereby completing the automatic feeding of the next push.

[0046] After unloading, the position-shifting frame 11 drives the vulcanization mold 2 back to a position below the upper mold assembly 24. After the mold is closed by the mold-closing frame 12, the rubber ring is vulcanized and formed into a rubber ring under the action of heat and pressure. Finally, the lower mold assembly 21 and the upper mold assembly 24 are separated. The position-shifting frame 11 drives the lower mold assembly 21 to a position away from the unloading assembly 3. The center mold 23 descends relative to the frame mold 22, and the four formed rubber rings are then removed.

[0047] The present invention provides a vulcanizing machine for rubber production, which is based on an existing vulcanizing mold 2 with multiple vulcanizing stations and is equipped with a discharge assembly 3. The discharge assembly 3 is provided with a pre-storage bin 32, a pushing component 33, a curling discharge barrel 34 and a discharge mechanism 37. The pre-storage bin 32 can be used to pre-stack and store rubber strips, and the pushing component 33 can be used to push the rubber strips in the pre-storage bin 32 into the curling discharge barrel 34 one by one, completing the automatic guided curling of the rubber ring and the alignment of the discharge. The double-safety discharge design of the discharge mechanism 37 can ensure that the rubber ring is accurately placed in the cavity of the lower mold, thereby replacing manual work to complete the manual curling and discharge operations of the rubber strips, greatly reducing the workload of simple manual repetitive operations, improving the automation and continuity of processing, and helping to improve the overall processing efficiency. In addition, the discharge assembly 3 has a simple structure and is easy to maintain.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0050] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A vulcanizing machine for rubber production, used for vulcanizing rubber strips into rubber rings, characterized in that: The above-mentioned vulcanizing press includes: Mould rack; Vulcanization mold, assembled on the mold frame for rubber vulcanization processing, including multiple vulcanization stations each consisting of an upper and lower mold; And a discharging assembly; the discharging assembly includes a lifting frame, the lifting frame includes a lifting frame, and a plurality of pre-storage bins equal in number to the vulcanization stations are fixed on the lifting frame, and the pre-storage bins are used to vertically stack and store rubber strips; the lifting frame is equipped with a plurality of curling discharge cylinders that place the rubber strips one by one at the lower mold position of the plurality of vulcanization stations, and the plurality of curling discharge cylinders are arranged in a one-to-one correspondence with the plurality of pre-storage bins; the curling discharge cylinder includes a coil guide cylinder, and an annular groove is provided near the bottom end of the coil guide cylinder to guide the rubber strip to be curled into a rubber ring, and the bottom end of the coil guide cylinder is equipped with a multi-petal support plate for supporting the rubber ring; each pre-storage bin is correspondingly equipped with a pushing component that pushes the pre-stored rubber strips into the annular groove one by one; the lifting frame is also equipped with a discharging mechanism that synchronously drives the rubber rings in the plurality of coil guide cylinders to complete the discharging.

2. A vulcanizing press for rubber production according to claim 1, characterized in that: The coil guide cylinder includes a connecting guide column fixed to the bottom end of the lifting frame, a central cylinder fixed to the bottom end of the connecting guide column, and a side surrounding cylinder coaxially arranged and fixed to the outer wall of the central cylinder; the annular groove is composed of an annular cavity surrounded by the central cylinder and the side surrounding cylinder; the side surrounding cylinder is connected to the pre-storage bin; and the multi-petal support plate is assembled on the side surrounding cylinder.

3. A vulcanizing press for rubber production according to claim 2, characterized in that: A feed opening is provided on the side wall of the side enclosure tube, and a docking joint extending toward the feed opening is provided on one side of the bottom of the pre-storage bin. The rubber strip is pushed from the feed opening to the annular groove through the docking joint, and the material guiding direction of the docking joint is tangential to the annular groove.

4. A vulcanizing press for rubber production according to claim 3, characterized in that: A starting bin is provided at a side of the bottom of the pre-storage bin relatively away from the docking joint, and a travel hole is provided at the bottom of the pre-storage bin extending from the starting bin to the docking joint; a pushing assembly is assembled at the bottom of the starting bin, and the pushing assembly includes a pushing part located inside the pre-storage bin, and the pushing part starts from the starting bin, moves along the travel hole, and pushes the rubber strip from the docking joint through the feed opening to the annular groove.

5. A vulcanizing press for rubber production according to claim 2, characterized in that: The multi-petal support plate includes a plurality of support plate pieces distributed circumferentially around the side enclosure tube. The support plate pieces are in a fan-shaped ring structure that can extend to the bottom opening of the annular groove. The plurality of support plate pieces are all installed on the side enclosure tube in a radially sliding manner.

6. A vulcanizing press for rubber production according to claim 5, characterized in that: The unloading mechanism includes a lifting and lowering stroke plate, a driving cylinder, a connecting rod, a return spring and a top contact cylinder installed on each coil guide cylinder; the central cylinders of multiple coil guide cylinders are fixed on the stroke plate; the driving cylinder is vertically slidably mounted on the connecting guide column; the top contact cylinder is key-fitted and slidably mounted on the central cylinder, and is located above the side cylinder; the return spring is sleeved on the central cylinder, and the two ends of the return spring are respectively fixed to the top of the central cylinder and the top contact cylinder; a connecting rod is hinged between the driving cylinder and each support plate piece in the multi-petal support plate; when the stroke plate descends, the driving cylinder first drives the support plate piece to move away from the bottom opening of the annular groove through the connecting rod, and then the driving cylinder presses down the top contact cylinder, and the bottom of the top contact cylinder extends into the annular groove.

7. A vulcanizing press for rubber production according to claim 6, characterized in that: A limiting top ring is provided on the top of the side enclosure tube, and a plurality of notches are provided on the limiting top ring distributed circumferentially; The bottom end of the top contact cylinder is provided with a plurality of top contact feet which extend into the plurality of notches in a one-to-one correspondence; when the top end of the top contact cylinder is not pressed down by the driving cylinder, the lower end surface of the top contact foot is flush with the inner end surface of the limiting top ring.

8. A vulcanizing press for rubber production according to claim 4, characterized in that: The pushing member includes a moving block that moves along the stroke hole. A spring push piece for pushing the rubber strip and a flexible pad for padding the rubber strip stacking layer are respectively fixed at the front and rear ends of the moving block in the pushing direction. The spring push piece is L-shaped.

9. A vulcanizing press for rubber production according to claim 1, characterized in that: The mold frame includes a position change frame and a mold closing frame. The vulcanization mold includes a lower mold assembly horizontally slidably mounted on the position change frame and an upper mold assembly vertically driven and mounted on the mold closing frame. Multiple vulcanization stations are composed of the upper mold assembly and the lower mold assembly.

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