Large-size rubber cylinder body manufacturing device

Abstract

The utility model discloses a large-size rubber barrel manufacturing device, a manufacturing system comprises a mold drying oven, a mounting base, a forming mold and a material supply device, the forming mold is detachably arranged on the mounting base and comprises an outer mold, an inner mold, an end mold and a mold core located in the inner mold, and the material supply device is arranged on the outer mold. Wherein the outer mold and the inner mold are vertically and coaxially arranged, a mold cavity is defined by the outer mold, the inner mold and the end mold, the inner mold is of a hollow petal-shaped structure, and a relative fixing structure and a linkage structure are arranged between the mold core and the inner mold; the material supply equipment is communicated with the cavity through a feeding pipeline, and the communication position is located at the bottom of the end die. And meanwhile, the mold is convenient to disassemble and assemble, time-saving and labor-saving, the production efficiency can be improved, particularly, the integrity of the large-size product can be fully guaranteed, damage is reduced, and good operability is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of mold structure, and specifically relates to a large-size rubber cylinder manufacturing device. Background Technology

[0002] In the existing technology, the production of gel or plastic products mainly adopts extrusion molding or injection molding. However, the molding of cylindrical bodies usually requires the combination of blow molding. Extrusion blow molding is a method for manufacturing hollow thermoplastic parts, such as the patent with patent number "201510561981.1" entitled "A Blow Molding Mold for Oil Drums".

[0003] However, during the research process, the applicant discovered that the current blow molding process is difficult to meet the production requirements of large-sized cylindrical bodies (usually referring to lengths exceeding 1000mm, outer diameters exceeding 300mm, and wall thicknesses exceeding 15mm), and is prone to cracking problems. If a direct extrusion process combined with internal and external molds is used, the existing molds, due to their large contact area, mostly have problems with demolding difficulties or damage to the product during the demolding process. Therefore, there is an urgent need to improve the production process and equipment for large-sized plastic cylinders. Utility Model Content

[0004] In view of this, the present invention provides a large-size rubber cylinder manufacturing device to solve the problems of difficult demolding and difficulty in guaranteeing production quality and efficiency in the production process of large-size rubber cylinders in the prior art.

[0005] The technical solution is as follows:

[0006] A large-size rubber cylinder manufacturing apparatus, the key of which includes:

[0007] Mold drying oven;

[0008] Mounting base with supporting platform;

[0009] A molding die is detachably mounted on the mounting base. It includes an outer mold, an inner mold, and end molds, as well as a mold core located inside the inner mold. The outer mold and the inner mold are vertically coaxial, and the outer mold, the inner mold, and the end molds together form a mold cavity. The inner mold has a hollow petal-shaped structure. The mold core and the inner mold, as well as the outer mold and the inner mold, have relatively fixed structures. The mold core and the inner mold have a linkage structure.

[0010] The material supply equipment is located outside the mold oven and is connected to the cavity through a feed pipeline, with the connection point located at the bottom of the end mold.

[0011] The above solution mainly optimizes the mold structure by setting the inner mold as a split petal structure and using it in conjunction with the mold core. This allows the mold core to be used first to loosen the inner mold during the demolding process. Later, the mold core can be used to directly remove part of the inner mold, which greatly reduces the demolding difficulty and avoids the impact of improper demolding operation on product quality. Furthermore, the bottom extrusion method is conducive to further improving product quality.

[0012] Preferably, the outer mold is a split type, comprising two vertically facing outer molds, and the two outer molds have a mutually engaging locking structure;

[0013] The mounting base includes a base frame, on which the end molds are fixed. The base frame has two symmetrically arranged outer mold slides opposite to the end molds, and is equipped with a mechanism for driving the outer mold slides to slide towards or away from a driving mechanism. The two separate outer molds can be fixed to the two outer mold slides respectively, and can close or separate under the action of the driving mechanism. This design facilitates rapid demolding of the outer molds and improves demolding efficiency.

[0014] Preferably, the bottom of the outer mold has a lower arc-shaped flange, and the outer mold slide has an arc-shaped groove adapted to the flange. This design improves the sealing performance of the mold cavity and the installation stability of the outer mold.

[0015] Preferably, the inner mold includes at least two small inner molds facing each other and two large inner molds facing each other, and the small inner molds and large inner molds are distributed in a cross pattern, with a cover plate fixedly connected to the top of each of the small inner molds and large inner molds.

[0016] The top of the mold core is provided with a lifting ring and a pressure plate that corresponds to the cover plate. The pressure plate can be connected and fixed to the corresponding cover plate by bolt A.

[0017] The outer mold is equipped with a transition flange at its top. The transition flange is connected and fixed to the outer mold by bolt B, and to each sub-cover plate by bolt C. Using this scheme, the pressure plate and transition flange enable independent connections between the small inner mold and the mold core, and between the small inner mold and the outer mold. This allows for partial disconnection as needed during demolding, resulting in greater operational flexibility.

[0018] Preferably, the mold core is a multi-faceted frustum shape, smaller at the bottom and larger at the top, with a sliding fit structure between the mold core and each segment of the inner mold. Using this design, the mold core can effectively ensure the stability of the inner mold shape during the molding process, and during demolding, when the mold core is pulled outwards, each segment of the inner mold can more easily and naturally retract, thereby improving demolding efficiency and quality.

[0019] Preferably, the sliding fit structure includes a groove disposed on the mold core and a slide rail disposed on each lobe of the inner mold that matches the corresponding groove;

[0020] In this design, at least two small inner molds facing each other are equipped with linkage blocks near the top of their inner sides. These linkage blocks protrude directly opposite the mold core. The mold core has a limiting groove on one side corresponding to the linkage block, positioned along its height. The limiting groove is located above the sliding groove, and the linkage block protrudes into the corresponding limiting groove. Using this design, the small inner molds are pulled out in a coordinated manner during the extraction of the mold core. The structure is simple, easy to implement, reduces the number of demolding steps, and significantly improves production efficiency.

[0021] Preferably, the device includes a cutting mechanism comprising a blade holder and a cutter fixed relative to the blade holder. The end mold has a blade mounting hole in its center that adapts to the blade holder. The blade holder is rotatably mounted within the blade mounting hole. The blade holder has a flow channel, and the cutter has a discharge port on its circumferential sidewall that communicates with the flow channel. The discharge port is at least partially located on the upper side of the end mold, and the cutter has cutting edges on both sides corresponding to the discharge port. The lower end of the flow channel is connected to the discharge end of a material supply device via a feed line. This design facilitates installation, allows for cutting the flow channel by rotation, helps ensure product integrity, and facilitates cleaning and replacement of the flow channel.

[0022] As a preferred embodiment, the inner mold assembly / disassembly frame includes a frame body. One side of the frame body has an inlet / outlet extending through the upper part. A U-shaped pad is provided at the top of the frame body corresponding to the inlet / outlet. The bottom of the frame body has a centrally located mold core positioning fixture. This design facilitates rapid demolding and assembly of the inner mold, reduces mold assembly steps, and shortens preparation time.

[0023] Based on the aforementioned large-size rubber sleeve manufacturing apparatus, this application also proposes a method for preparing large-size rubber sleeves, the technical solution of which is as follows:

[0024] A method for using a large-size rubber cylinder manufacturing apparatus, the key of which includes the following steps:

[0025] S1. Fix the molding mold on the mounting base, and then fix the whole mold on the automatic trolley. Use the automatic trolley to send it into the mold drying oven. The bottom of the mold cavity is connected to the discharge end of the material supply equipment through the feeding pipeline.

[0026] S2, after the molding mold is preheated to the target temperature by the mold oven, the prepared material is liquefied by the material supply equipment and fills the mold cavity from bottom to top;

[0027] S3, after the molding die cools to room temperature, the material inlet is sheared by the cutting mechanism, and then the demolding operation is performed.

[0028] Preferably, step S3 includes the following steps for demolding:

[0029] S3.1 Loosen bolt A, remove the pressure plate, disconnect the mold core from the inner mold, lift the mold core to a certain height and then put it back, restore the pressure plate, and tighten bolt A;

[0030] S3.2, loosen bolt B and release the connection structure between the two outer molds, release the locking structure between the outer mold slide and the mounting base, lift the inner mold and mold core as a whole, separate the adapter flange from the two outer molds, and then drive the outer mold slide to slide in a relatively distant direction through the drive mechanism, causing the outer molds to separate outwards;

[0031] S3.3, hoist the inner mold and mold core with the product attached as a whole onto the inner mold assembly and disassembly frame, support the adapter flange on the U-shaped pad, loosen bolt A and remove the pressure plate, loosen bolt C corresponding to the small inner mold, disconnect the connection between the small inner mold corresponding cover plate and the adapter flange, then hoist the mold core upwards and use the linkage structure to remove the small inner mold together;

[0032] S3.4 Loosen the bolt C corresponding to the large inner mold, disconnect the connection between the corresponding cover plate of the large inner mold and the transition flange, install the lifting tool on the corresponding cover plate of the large inner mold, and lift the two large inner molds away in turn;

[0033] S3.5, the product is lifted out through the inlet / outlet by removing it from the transfer flange.

[0034] By adopting the above solutions, the demolding process is reduced, saving time and effort, while ensuring the integrity of the product and reducing the risk of damage to large-sized products.

[0035] Compared with the prior art, the beneficial effects of this utility model are:

[0036] The large-size rubber cylinder manufacturing device provided by this utility model can meet the production needs of large-size products. At the same time, the mold is easy to assemble and disassemble, saving time and effort, which is conducive to improving production efficiency. In particular, it can fully guarantee the integrity of large-size products, reduce damage, and has good operability. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is a schematic diagram showing the installation of the molding die on the mounting base;

[0039] Figure 3 for Figure 2 Axonometric drawing;

[0040] Figure 4 for Figure 2 Top view;

[0041] Figure 5 for Figure 4Sectional view at point AA;

[0042] Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle;

[0043] Figure 7 for Figure 5 Enlarged view of a section at point B in the middle;

[0044] Figure 8 This is a schematic diagram of the outer mold structure;

[0045] Figure 9 This is a sectional view of the outer mold;

[0046] Figure 10 This is an exploded view of the outer model;

[0047] Figure 11 This is a schematic diagram of the inner mold, mold core, and end mold assembly;

[0048] Figure 12 This is a schematic diagram of the assembly structure of the inner mold and mold core;

[0049] Figure 13 This is a sectional view of the small inner mold;

[0050] Figure 14 for Figure 12 Exploded view;

[0051] Figure 15 Schematic diagram of the mold core structure Figure 1 ;

[0052] Figure 16 Schematic diagram of the mold core structure Figure 2 ;

[0053] Figure 17 This is a schematic diagram showing the installation of the end mold and cutting mechanism on the mounting base.

[0054] Figure 18 This is a schematic diagram of the mounting base structure;

[0055] Figure 19 for Figure 18 Top view;

[0056] Figure 20 for Figure 19 Sectional view at point BB;

[0057] Figure 21 This is a schematic diagram of the assembly of the end die and the cutting mechanism;

[0058] Figure 22 for Figure 21 A sectional view;

[0059] Figure 23 This is a schematic diagram of the end mold structure;

[0060] Figure 24 This is a schematic diagram of the cutting mechanism;

[0061] Figure 25 Exploded view of the cutting mechanism;

[0062] Figure 26 for Figure 24 A sectional view;

[0063] Figure 27 This is a schematic diagram of the cutter structure;

[0064] Figure 28 for Figure 27 Bottom view;

[0065] Figure 29 A schematic diagram of the internal mold assembly and disassembly support structure;

[0066] Figure 30 This is a schematic diagram of the outer mold detachment operation;

[0067] Figure 31 This is a schematic diagram showing the separation of the mold core and the small inner mold.

[0068] Figure 32 This is a schematic diagram of the product structure;

[0069] Figure 33 for Figure 32 Axonometric drawing. Detailed Implementation

[0070] The present invention will now be described in further detail with reference to the accompanying drawings.

[0071] refer to Figures 1 to 31 The large-size rubber cylinder manufacturing apparatus shown includes a preparation system that mainly comprises a mold oven 100, a mounting base 200, a molding die 300, and a material supply device 400. The mold oven 100 is equipped with a temperature control system that can heat and cool the molding die 300 inside. In this embodiment, for ease of operation, the mold oven 100 is equipped with an automatic trolley 110. The trolley 110 can easily enter and exit the mold oven 100 via a track. In use, the molding die 300 can be quickly transferred by simply fixing it on the automatic trolley 110. The material supply device 400 is mainly used to liquefy the rubber material and send it into the molding die 300 through the material pipeline 410 to complete the material extrusion. This application preferably uses a twin-screw extruder as the material supply device 400.

[0072] As shown in the figure, the top of the mounting base 200 has a support platform 210, and the molding die 300 can be detachably fixed to the mounting base 200. (Refer to...) Figure 32 and Figure 33The structure of the rubber tube body shown in this application is a circular cylindrical structure with one end open and the other end closed. The closed bottom end has a large central hole and wire outlet holes evenly distributed around the central hole.

[0073] Therefore, the molding die 300 of this application mainly includes an outer die 310, an inner die 320 and an end die 370, as well as a die core 330 located inside the inner die 320. The outer die 310 and the inner die 320 are arranged vertically and coaxially. The outer die 310, the inner die 320 and the end die 370 together form a die cavity 350. The inner die 320 has a hollow petal-shaped structure. The die core 330 has a relatively fixed structure with the inner die 320 and the outer die 310. The die core 330 has a linkage structure with the inner die 320.

[0074] In this application, to improve the efficiency of mold assembly and disassembly, the outer mold 310 is a split type, including two vertically facing outer molds 311. The two outer molds 311 have a mutually cooperating locking structure, as shown in the figure. The cross-section of the two outer molds 311 is roughly semi-circular. The mating surfaces of the two outer molds 311 adopt a folded mating method to increase the mating area, thereby ensuring the sealing of the mating parts. Both are supported by high-strength alloy steel and can be connected into one piece by fastening screws. At the same time, both have vertical and circumferential reinforcing ribs on their outer circumference to improve the overall strength.

[0075] In addition, a thermocouple 314 is installed on the outer mold 310 for auxiliary heating, which helps to improve the accuracy of temperature control.

[0076] Key reference Figures 17 to 20 In this application, the mounting base 200 includes a base frame 240, as shown in the figure. The end mold 370 is fixed on the base frame 240. The base frame 240 has two outer mold slide plates 220 symmetrically arranged opposite to the end mold 370, and is equipped with a mechanism for driving the outer mold slide plates 220 to slide towards or away from the drive mechanism 230. The two separate outer molds 311 can be fixed on the two outer mold slide plates 220 respectively, and close or separate under the action of the drive mechanism 230.

[0077] As shown in the figure, the base frame 240 is a frame structure with a trolley connecting plate 250 at the bottom and a support platform 210 at the top, on which a base plate 260 is fixedly installed. The base plate 260 has two sets of horizontally arranged sliding guide rails 211 on the left and right. The two outer mold sliding plates 220 are slidably supported on the two sets of sliding guide rails 211 respectively. The drive mechanism 230 is a screw drive mechanism, which mainly includes a screw that is rotatably connected to the outer mold sliding plate 220, and a handwheel that cooperates with the screw. The handwheel is rotatably installed at the outer end of the base plate 260.

[0078] When the two outer mold slides 220 are closed, they abut against the outer side of the end mold 370. To ensure the stability of the closed state, a slide positioning pin 222 is provided on the outer mold slide 220, and a corresponding pin hole is provided on the bottom plate 260. When the two outer mold slides 220 are closed, the position can be fixed by the slide positioning pin 222, so as to prevent the position of the outer mold slide 220 from changing due to accidental contact with the handwheel in subsequent processes, thereby improving the reliability of the device. In addition, the contact surface of the two outer mold slides 220 when closed also adopts a similar combination structure to the two separate outer molds 311, which helps to ensure the reliability of the contact posture.

[0079] Considering the sliding stability of the outer mold slide plate 220, in specific implementation, slide plate limiting plates 270 are provided on both sides of the base plate 220 corresponding to the outer mold slide plate 220. The slide plate limiting plates 270 are fixedly connected to the base plate 260. The vertical cross section of the slide plate limiting plates 270 is roughly inverted "L" shape, as shown in the figure. The two sides of the outer mold slide plate 220 facing each other have steps that cooperate with the slide plate limiting plates 270. The cooperation between the slide plate limiting plates 270 and the outer mold slide plate 220 can prevent the sides of the outer mold slide plate 220 from tilting upwards during the sliding process.

[0080] The lower end of the outer mold 311 has multiple corresponding connecting holes on the outer mold slide plate 220. The outer mold 311 is mainly fixed to the outer mold slide plate 220 by bolts. In order to further improve the installation stability of the outer mold, the bottom of the outer mold 311 has a lower arc-shaped flange 312. The two lower arc-shaped flanges 312 are arranged in a circle. The outer mold slide plate 220 has an arc-shaped groove 221 that is adapted to the lower arc-shaped flange 312. In this way, when installing, the lower arc-shaped flange 312 at the lower end of the outer mold 311 is first inserted into the corresponding arc-shaped groove 221, which can play a certain role in initial positioning and facilitate subsequent bolt tightening operations.

[0081] Key reference Figures 5 to 7 , Figures 12 to 14 The inner mold 320 includes at least two small inner molds 321 and two large inner molds 322 arranged opposite each other, and the small inner molds 321 and large inner molds 322 are distributed in a cross pattern. The top of the small inner molds 321 and large inner molds 322 are fixedly connected to the cover plates 323, as shown in the figure. In order to reduce the mold manufacturing cost, there are two small inner molds 321 and two large inner molds 322 in this embodiment. The curvature of the small inner mold 321 gradually decreases from top to bottom, and the curvature of the large inner mold 322 gradually increases from top to bottom. This makes it easier for the lower end of the small inner mold 321 to shrink inward when it is lifted. The cover plates 323 are bolted to the small inner molds 321 and large inner molds 322. The four cover plates 323 together form a roughly circular plate structure.

[0082] The top of the mold core 330 is provided with a lifting ring 331 and a pressure plate 332 corresponding to each of the cover plates 323. The lifting ring 331 is detachably connected to the mold core 330. During the molding process, the lifting ring 331 can be removed for the installation of a three-way valve. The pressure plate 332 can be connected and fixed to the corresponding cover plate 323 by bolt A335. The top of the outer mold 310 is provided with a transition flange 360, as shown in the figure. The top of the outer mold 311 has an upper arc-shaped flange 313. The transition flange 360 ​​is annular. The upper arc-shaped flange 313 protrudes to the inner side of the transition flange 360 ​​and abuts against its inner sidewall. The end face of the transition flange 360 ​​abuts against the upper end face of the outer mold 310 and is connected and fixed to the outer mold 310 by bolt B361. In addition, the transition flange 360 ​​is connected and fixed to each cover plate 323 by bolt C362.

[0083] In this embodiment, to reduce the difficulty of demolding, the mold core 330 is a multi-faceted frustum shape with a smaller bottom and a larger top. The mold core 330 and the inner mold 320 have a sliding fit structure that cooperates with each other. Specifically, the sliding fit structure includes a groove 333 on the mold core 330 and a slide rail 324 on each lobe of the inner mold 320 that matches the corresponding groove 333, as shown in the figure. Because the mold core 330 is conical, the slide rail 324 and the groove 333 fit structure are also inclined. The groove 333 adopts a dovetail groove structure. When the mold core 330 extends downward, the small inner mold 321 and the large inner mold 322 are pushed outward to their maximum position. When the mold core 330 is pulled upward, the small inner mold 321 and the large inner mold 322 can be relatively easily contracted inward and demolded.

[0084] To ensure the stability of the lower end of the inner mold 320 during the molding process, a tenon-like interlocking structure is provided between the lower end of the inner mold 320 and the mold core 330, as shown in the figure. The mold core 330 is generally a four-sided cone shape. Large slots 336 are provided on both lower ends of the large inner mold 322, and limiting steps 337 are provided on both lower ends of the small inner mold 321. The large slots 336 are generally dovetail-shaped with open bottoms. The lower end of the large inner mold 322 has an anti-rotation locking part 3220 that protrudes inward and adapts to the large slots 36, while the lower end of the small inner mold 321 has an upward limiting part 3210 that protrudes inward to the lower side of the limiting steps 337. After the inner mold 320 and the mold 330 are assembled, the anti-rotation locking part 3220 is embedded in the large slots 336, and the upward limiting part 3210 abuts against the limiting steps 337.

[0085] In this application, at least two small inner molds 321 facing each other are provided with linkage blocks 325 near the top of their inner sides, as shown in the figure. The linkage blocks 325 protrude directly opposite the mold core 330. The mold core 330 has a limiting groove 334 on one side surface corresponding to the linkage blocks 325, which is set along its height direction. The limiting groove 334 is located above the corresponding slide groove 333. The linkage blocks 325 protrude into the corresponding limiting groove 334. In this way, when the mold core 330 moves upward and abuts against the linkage blocks 325 at the bottom of the limiting groove 334, it can drive the small inner molds 321 to move upward synchronously, so that the two can disengage at the same time.

[0086] The end mold 370 mainly includes an integrally formed mounting part 372 and a circular boss 373, as shown in the figure. The outer diameter of the circular boss 373 is adapted to the inner diameter of the product. At the same time, the base plate 260 has a mounting groove adapted to the mounting part 372, and the two have a matching positioning and fixing structure. The circular boss 373 has a forming column adapted to the outlet hole. After the mold is assembled, the outer mold 310 is supported on the outer mold slide plate 220. There is a circumferential void between its inner side and the inner mold 320, and there is a height difference between the bottom of the inner mold 320 and the circular boss 373. The bottom space corresponding to the height difference and the circumferential void together constitute the mold cavity 350.

[0087] Key reference Figures 21 to 28 To improve product integrity, a cutting mechanism 500 is provided at the feed inlet, as shown in the figure. In this embodiment, the cutting mechanism 500 mainly includes a cutter holder 510 and a cutter 520 fixed relative to the cutter holder 510. The end mold 370 has a cutter mounting hole 371 adapted to the cutter holder 510 in the middle. The cutter holder 510 is rotatably installed in the cutter mounting hole 371. Usually, the two are connected by a thread. The cutter holder 510 has an external thread end and a flat clamping surface.

[0088] The cutter holder 510 has a flow channel 511, and the cutter 520 has a discharge port 521 on its circumferential sidewall that communicates with the flow channel 511. The discharge port 521 is at least partially located on the upper side of the end mold 370, and the cutter 520 has cutting edges 522 formed on both sides corresponding to the discharge port 521. The lower end of the flow channel 511 is connected to the discharge end of the material supply device 400 through a feed pipe. In a specific implementation, the cutter holder 510 also adopts a petal-shaped structure for easy cleaning. In this embodiment, it is composed of two petals, and the discharge port 521 adopts an inner larger and outer smaller structure, which is more conducive to rotational shearing.

[0089] The bottom of the cutter 520 has a locking block 523 that protrudes radially outward, while the top of the cutter holder 510 has a cutter slot 512 that corresponds to the locking block 523. The locking block 523 and the cutter slot 512 cooperate to fix the cutter 520 circumferentially. At the same time, the cutter 520 and the cutter holder 510 are also axially connected and fixed by a cutter connecting screw.

[0090] On the other hand, to improve the stability of the lower end of the inner mold 320, the cutter 520 has a centering hole 524 in the middle, and a centering boss 525 on the circumferential outer side of the centering hole 524. As shown in the figure, the centering boss 525 is conical. The bottom of the mold core 330 has a positioning hole 338 that is compatible with the centering boss 525. A centering shaft 339 is set in the middle of the positioning hole 338. A centering seat 526 is fixed in the centering hole 524, which has a countersunk hole that is compatible with the centering shaft 339. After the mold is assembled, the positioning hole 338 and the centering boss 525 are engaged, and the centering shaft 339 is inserted into the center hole on the centering seat 526, which can stabilize the mold core 330 and correct the inner mold 320.

[0091] refer to Figure 29 In order to improve the efficiency of mold assembly and disassembly, this application also includes an inner mold assembly and disassembly frame 600, as shown in the figure. The inner mold assembly and disassembly frame 600 includes a frame body 610. One side of the frame body 610 has an inlet and outlet 611 that passes through the top. The top of the frame body 610 is provided with a U-shaped pad 620 corresponding to the position of the inlet and outlet 611. The bottom of the frame body 610 has a mold core positioning fixture 630 that is centrally located.

[0092] Based on the aforementioned large-size rubber cylinder manufacturing apparatus, this application proposes a corresponding method of use, which mainly includes the following steps:

[0093] S1, fix the molding mold 300 on the mounting base 200, and then fix the whole thing on the automatic trolley 110. Use the automatic trolley 110 to send it into the mold drying oven 100. Connect the relevant ventilation and temperature detection lines. The bottom of the mold cavity 350 is connected to the discharge end of the material supply equipment 400 through the feeding pipeline.

[0094] S2, after the molding mold 300 is preheated to the target temperature by the mold oven 100, the prepared material is liquefied by the material supply equipment 400 and fills the mold cavity 350 from bottom to top.

[0095] S3, after the molding die 300 cools to room temperature, the material inlet is sheared by the cutting mechanism 500, and then the demolding operation is performed.

[0096] Specifically, in step S3, the blade holder 510 has a polyhedral structure on the outer periphery, which can drive the cutter 520 to rotate by rotation, thereby cutting off the gate and ensuring the smoothness and integrity of the cut.

[0097] The demolding process includes the following steps:

[0098] S3.1 Loosen bolt A335 and remove pressure plate 332 to disconnect the connection between mold core 330 and inner mold 320. Note that the connection between the adapter flange and the cover plate also needs to be loosened, i.e., loosen bolt C362. Lift mold core 330 to a certain height and then put it back. Replace pressure plate 332 and tighten bolts A335 and C362. During this step, the lifting distance of mold core 330 is relatively short. Its main purpose is to use mold core 330 to loosen inner mold 320, which is conducive to the loosening of outer mold.

[0099] S3.2, loosen bolt B361 and release the connection between the two outer molds 311, release the locking structure between the outer mold slide plate 220 and the mounting base 200, lift the inner mold 320 and mold core 330 as a whole, separate the transition flange 360 ​​from the two outer molds 311, and then drive the outer mold slide plate 220 to slide in a relatively distant direction through the drive mechanism 230, causing the outer molds 311 to separate outwards, as shown. Figure 30 As shown.

[0100] S3.3, hoist the inner mold 320 and mold core 330 with the product attached onto the inner mold assembly / disassembly frame 600. The adapter flange 360 ​​is supported on the U-shaped pad 620, and the lower end of the mold core is supported on the mold core positioning fixture 630. Loosen bolt A335 and remove the pressure plate 332. Loosen bolt C362 corresponding to the small inner mold 321, disconnecting the connection between the corresponding cover plate 323 of the small inner mold 321 and the adapter flange 360. Then, hoist the mold core 330 upwards, using the linkage structure to remove the small inner mold 321 together. That is, when the mold core 330 rises to the bottom of the limiting groove 334 and abuts against the linkage block 325, the small inner mold 321 will rise together. Figure 31 As shown.

[0101] S3.4 Loosen the bolt C362 corresponding to the large inner mold 322, disconnect the connection between the cover plate 323 corresponding to the large inner mold 322 and the transition flange 360, install the lifting device on the cover plate 323 corresponding to the large inner mold 322, and lift the two large inner molds 322 away in turn. In specific operation, the large inner mold 322 needs to be slightly swung to the opposite side to separate it from the product before lifting it upward.

[0102] S3.5, after lifting off the transition flange 360 ​​and securing the product with ropes, it can be lifted out through inlet / outlet 611.

[0103] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A large-size rubber sleeve body manufacturing apparatus characterized by comprising: include: Mold drying oven (100); Mounting base (200) with supporting platform (210); A molding die (300) is detachably mounted on the mounting base (200). It includes an outer mold (310), an inner mold (320), and an end mold (370), as well as a mold core (330) located inside the inner mold (320). The outer mold (310) and the inner mold (320) are vertically coaxially arranged. The outer mold (310), the inner mold (320), and the end mold (370) together form a mold cavity (350). The inner mold (320) has a hollow petal-shaped structure. The mold core (330) has a relatively fixed structure with the inner mold (320) and the outer mold (310). The mold core (330) has a linkage structure with the inner mold (320). The material supply device (400) is located outside the mold oven (100) and is connected to the cavity (350) via a feed line, with the connection point located at the bottom of the end mold (370).

2. The apparatus for manufacturing a large-size rubber sleeve body according to claim 1, characterized by: The outer mold (310) is a split type, including two vertically facing outer molds (311), and the two outer molds (311) have a locking structure that cooperates with each other; The mounting base (200) includes a base frame (240), the end mold (370) is fixed on the base frame (240), the base frame (240) has two outer mold slide plates (220) symmetrically arranged opposite to the end molds (370), and is configured to drive the outer mold slide plates (220) to slide towards or away from the drive mechanism (230). The two separate outer molds (311) can be fixed on the two outer mold slide plates (220) respectively, and close or separate under the action of the drive mechanism (230).

3. The apparatus for manufacturing a large size rubber cylinder body according to claim 2, wherein: The outer mold (311) has a lower arc-shaped flange (312) at the bottom, and the outer mold slide (220) has an arc-shaped groove (221) adapted to the flange (312).

4. The apparatus for manufacturing a large size rubber sleeve body according to claim 1, wherein: The inner mold (320) includes at least two small inner molds (321) and two large inner molds (322) arranged opposite each other, and the small inner molds (321) and large inner molds (322) are distributed in a cross pattern. The top of the small inner molds (321) and the large inner molds (322) are both fixedly connected with a cover plate (323). The top of the mold core (330) is provided with a lifting ring (331) and a pressure plate (332) that corresponds to the cover plate (323). The pressure plate (332) can be connected and fixed to the corresponding cover plate (323) by bolt A (335). The outer mold (310) is provided with a transition flange (360) on the top. The transition flange (360) is connected and fixed to the outer mold (310) by bolt B (361) and to each sub-cover plate (323) by bolt C (362).

5. The apparatus for manufacturing a large size rubber cylinder body according to claim 4, wherein: The mold core (330) is a multi-faceted frustum shape with a smaller bottom and a larger top, and the mold core (330) and the inner mold (320) have a sliding fit structure that cooperates with each other.

6. The apparatus for manufacturing a large size rubber cylinder body according to claim 5, wherein: The sliding fit structure includes a groove (333) disposed on the mold core (330) and a slide rail (324) disposed on each lobe of the inner mold (320) and matching the corresponding groove (333). Among them, at least two small inner molds (321) facing each other are provided with linkage blocks (325) near the top of the inner side. The linkage blocks (325) protrude from the mold core (330). The mold core (330) has a limiting groove (334) on one side surface corresponding to the linkage block (325) along its height direction. The limiting groove (334) is located above the slide groove (333). The linkage block (325) protrudes into the corresponding limiting groove (334).

7. The apparatus according to claim 5 or 6, wherein: The device includes a cutting mechanism (500), which includes a cutter holder (510) and a cutter (520) fixed relative to the cutter holder (510). The end mold (370) has a cutter mounting hole (371) in the middle that is adapted to the cutter holder (510). The cutter holder (510) is rotatably mounted in the cutter mounting hole (371). The cutter holder (510) has a flow channel (511). The cutter (520) has a discharge port (521) on its circumferential sidewall that communicates with the flow channel (511). The discharge port (521) is at least partially located on the upper side of the end mold (370). The cutter (520) has cutting edges (522) formed on both sides corresponding to the discharge port (521). The lower end of the flow channel (511) is connected to the discharge end of the material supply device (400) through a feed pipeline.

8. The apparatus for manufacturing a large size rubber sleeve body according to claim 1, wherein: The inner mold assembly and disassembly frame (600) includes a frame body (610), one side of the frame body (610) has an inlet and outlet (611) that passes through the upper part, the top of the frame body (610) is provided with a U-shaped pad (620) corresponding to the inlet and outlet (611), and the bottom of the frame body (610) has a mold core positioning fixture (630) set in the center.

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