Large-size rubber cylinder body preparation mold

Abstract

The utility model discloses a large-size rubber cylinder body preparation mould, the preparation mould comprises an outer mould, an inner mould, an end part mould and a mould core located in the inner mould, the outer mould and the inner mould are vertically and coaxially arranged, the outer mould, the inner mould and the end part mould are encircled to form a mould cavity, the inner mould is of a hollow petal-shaped structure, and the end part mould is of a hollow petal-shaped structure. Relative fixing structures are arranged between the mold core and the inner mold and between the mold core and the outer mold, and a linkage structure is arranged between the mold core and the inner mold. By the adoption of the scheme, production of large-size products can be met, meanwhile, the die is convenient to disassemble and assemble, time and labor are saved, production efficiency can be improved, especially, the integrity of the large-size products 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, specifically relating to a mold for preparing large-size rubber cylinders. 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 mold for preparing large-size rubber cylinders, so as 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 mold for manufacturing large-size rubber cylinders, the key features of which are: an outer mold, an inner mold, and an end mold, as well as a mold core located inside the inner mold, wherein the outer mold and the inner mold are vertically coaxially arranged, and the outer mold, the inner mold, and the end mold together form a mold cavity, the inner mold is a hollow petal-shaped structure, the mold core has a relatively fixed structure with respect to both the inner mold and the outer mold, and the mold core has a linkage structure with respect to the inner mold.

[0007] By adopting the above solution, the mold structure is optimized by setting the inner mold as a split petal structure and using it in conjunction with the mold core. In this way, the mold core can 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.

[0008] Preferably, the outer mold is a split type, comprising two vertically facing outer molds with a locking structure between them. This split-type outer mold structure facilitates rapid demolding, further improving demolding efficiency.

[0009] Preferably, the bottom of the outer mold has a lower arc-shaped flange protruding along its length. This design facilitates the overall fixation of the outer mold and ensures the stability of the mold cavity.

[0010] 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.

[0011] 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.

[0012] The outer mold is provided with a transition flange on the top. The transition flange is connected and fixed to the outer mold by bolt B, and to each sub-cover plate by bolt C.

[0013] By adopting the above scheme, the pressure plate and the adapter flange are used to achieve independent connection between the small inner mold and the mold core, and between the small inner mold and the outer mold, so that partial connection or disconnection can be performed as needed during the demolding process, which improves the flexibility of operation.

[0014] 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.

[0015] 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;

[0016] 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.

[0017] Preferably, the central angle corresponding to the small inner mold gradually decreases from top to bottom, while the central angle corresponding to the large inner mold gradually increases from top to bottom. This design facilitates the inward retraction of the small inner mold during demolding, further reducing the difficulty of demolding.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The mold for preparing large-size rubber cylinders 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 helps to improve production efficiency. In particular, it can fully guarantee the integrity of large-size products, reduce damage, and has good operability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0021] Figure 2 This is a schematic diagram of the installation of this utility model on the mounting base;

[0022] Figure 3 for Figure 2 Axonometric drawing;

[0023] Figure 4 for Figure 2 Top view;

[0024] Figure 5 for Figure 4 Sectional view at point AA;

[0025] Figure 6 for Figure 5 Enlarged view of a portion of point A in the middle;

[0026] Figure 7 for Figure 5 Enlarged view of a section at point B in the middle;

[0027] Figure 8 This is a schematic diagram of the outer mold structure;

[0028] Figure 9 This is a sectional view of the outer mold;

[0029] Figure 10 This is an exploded view of the outer model;

[0030] Figure 11 This is a schematic diagram of the inner mold, mold core, and end mold assembly;

[0031] Figure 12 This is a schematic diagram of the assembly structure of the inner mold and mold core;

[0032] Figure 13 This is a sectional view of the small inner mold;

[0033] Figure 14 for Figure 12 Exploded view;

[0034] Figure 15 Schematic diagram of the mold core structure Figure 1 ;

[0035] Figure 16 Schematic diagram of the mold core structure Figure 2 ;

[0036] Figure 17 This is a schematic diagram showing the installation of the end mold and cutting mechanism on the mounting base.

[0037] Figure 18 This is a schematic diagram of the mounting base structure;

[0038] Figure 19 for Figure 18 Top view;

[0039] Figure 20 for Figure 19 Sectional view at point BB;

[0040] Figure 21 This is a schematic diagram of the assembly of the end die and the cutting mechanism;

[0041] Figure 22 for Figure 21 A sectional view;

[0042] Figure 23 This is a schematic diagram of the end mold structure;

[0043] Figure 24 This is a schematic diagram of the cutting mechanism;

[0044] Figure 25 Exploded view of the cutting mechanism;

[0045] Figure 26 for Figure 24 A sectional view;

[0046] Figure 27 This is a schematic diagram of the cutter structure;

[0047] Figure 28 for Figure 27 Bottom view;

[0048] Figure 29 A schematic diagram of the internal mold assembly and disassembly support structure;

[0049] Figure 30 This is a schematic diagram of the outer mold detachment operation;

[0050] Figure 31 This is a schematic diagram showing the separation of the mold core and the small inner mold.

[0051] Figure 32 This is a schematic diagram of the product structure;

[0052] Figure 33 for Figure 32 Axonometric drawing. Detailed Implementation

[0053] The present invention will now be described in further detail with reference to the accompanying drawings.

[0054] First refer to Figure 32 and Figure 33 The structure of the rubber tube shown is a cylindrical structure with one end open and the other end closed. The closed end has a large central hole and wire outlet holes evenly distributed around the central hole.

[0055] Based on the structure of the aforementioned rubber sleeve, refer to Figures 1 to 31 The large-size rubber cylinder preparation mold shown mainly 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 arranged vertically and coaxially. 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 both the inner mold 320 and the outer mold 310. The mold core 330 has a linkage structure with the inner mold 320.

[0056] 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.

[0057] In addition, a thermocouple 314 is provided on the outer mold 310 for auxiliary heating, which helps to improve the accuracy of temperature control. Under normal circumstances, in order to ensure the stability of the installation and use of the outer mold 310 and the sealing of the internal cavity, the bottom of the outer mold 311 has a lower arc-shaped flange 312 that protrudes downward along its length.

[0058] 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 an alternating manner. 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 arc length (central angle) corresponding to the small inner mold 321 gradually decreases from top to bottom. Correspondingly, the arc length (central angle) corresponding to 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In this embodiment, the end mold 370 mainly includes an integrally formed mounting part 372 and a circular boss 373. The outer diameter of the circular boss 373 is adapted to the inner diameter of the product. The circular boss 373 has a forming pillar adapted to the wire outlet hole. After the mold is assembled, there is a height difference between the bottom of the inner mold 320 and the circular boss 373. The bottom space corresponding to this height difference and the circumferential annular space together constitute the mold cavity 350.

[0064] Key reference Figures 21 to 28 To improve product integrity, the mold of this application is also equipped with a cutting mechanism 500, as shown in the figure. In this embodiment, the cutting mechanism 500 mainly includes a knife holder 510 and a cutter 520 fixed relative to the knife holder 510. The end mold 370 has a tool mounting hole 371 adapted to the knife holder 510 in the middle. The knife holder 510 is rotatably installed in the tool mounting hole 371. Usually, the two are connected by a thread. The knife holder 510 has an external thread end and a flat clamping surface.

[0065] The cutter holder 510 has a flow channel 511, and the cutter 520 has a discharge port 521 on its circumferential side wall that communicates with the flow channel 511. The discharge port 521 is at least partially located on the upper side of the end die 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 extruder 400 through a feed pipe. In specific implementation, for ease of cleaning, the cutter holder 510 also adopts a petal-shaped structure. 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.

[0066] 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.

[0067] 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.

[0068] Based on the above-mentioned mold for manufacturing large-size rubber cylinders, a method for disassembling and assembling the mold for manufacturing large-size rubber cylinders is also proposed, mainly including a mold assembly method and a mold disassembly method, wherein the mold assembly method includes the following steps:

[0069] A1. Fix the end mold 370 and the outer mold 310 to the horizontal support platform.

[0070] A2. Assemble the inner mold 320 and the mold core 330 into one piece, then hoist the whole piece into the cavity of the outer mold 310 and fix it to the outer mold 310.

[0071] The demolding method includes the following steps:

[0072] B1. Loosen the connection between the mold core 330 and the inner mold 310 and the outer mold 310, lift the mold core 330 up by the designed distance (which is small), and then lower it back to its original position to restore the connection between the mold core 330 and the inner mold 310, thereby achieving the purpose of loosening the inner mold 310.

[0073] B2, loosen bolt B361 and disconnect the connection structure between the two outer molds 311, then disconnect the connection between the two outer molds 311 and the horizontal support platform, as well as the connection between the two outer molds 311 and each other. Use external equipment to move the two outer molds 311 in opposite directions to remove them. The outer molds can be removed by radial movement, which is less difficult and easier to implement than axial pulling.

[0074] B3. Lift out the inner mold 320 and mold core 330 with the product attached as a whole and place them vertically. Loosen bolt A335 and remove pressure plate 332. Loosen bolt C362 corresponding to small inner mold 321. Disconnect the connection between the cover plate 323 corresponding to small inner mold 321 and the transition flange 360. Then lift mold core 330 upward and use the linkage structure to remove small inner mold 321 together.

[0075] B4. Loosen bolt C362 corresponding to the large inner mold 322, disconnect the connection between the sub-cover plate 323 corresponding to the large inner mold 322 and the transition flange 360, install the lifting tool on the sub-cover plate 323 corresponding to the large inner mold 322, and lift the two large inner molds 322 away in turn, leaving only the product in the original position.

[0076] The mold assembly and disassembly process of this application is usually carried out in conjunction with the mounting base 200 and the inner mold assembly / disassembly frame 600 given in this embodiment.

[0077] Key reference Figures 17 to 20 In this embodiment, 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 configured with a mechanism for driving the outer mold slide plates 220 to slide towards or away from the driving 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 driving mechanism 230.

[0078] 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 an installation groove that is compatible with the installation part 372. The two have a matching positioning and fixing structure. Two outer mold slide plates 220 are symmetrically arranged on both sides of the installation groove. The base plate 260 has two sets of horizontally arranged slide rails 211. The two outer mold slide plates 220 are slidably supported on the two sets of slide 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 slide plate 220 and a handwheel that cooperates with the screw. The handwheel is rotatably installed at the outer end of the base plate 260.

[0079] 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.

[0080] 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.

[0081] 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 outer mold slide plate 220 has an arc-shaped groove 221 that is adapted to the lower arc-shaped flange 312. When the mold is installed, the lower arc-shaped flange 312 at the lower end of the outer mold 311 is first embedded in the corresponding arc-shaped groove 221, which can play a certain role in initial positioning and facilitate subsequent bolt tightening operations.

[0082] refer to Figure 29 The inner mold assembly and disassembly frame 600 mainly includes a frame body 610. One side of the frame body 610 has an inlet and outlet 611 that passes through the top. A U-shaped pad 620 is provided on the top of the frame body 610 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.

[0083] In actual use, the preparation mold of this application is usually used in conjunction with a mold oven 100 and a material extruder 400. The mold oven 100 is equipped with a temperature control system, which can heat and cool the mold inside. In this embodiment, for ease of operation, the mold oven 100 is equipped with an automatic trolley 110. The automatic trolley 110 can easily enter and exit the mold oven 100 via a track. When in use, the mold only needs to be fixed on the automatic trolley 110, and the mounting base 200 can be fixed to the automatic trolley 110 via the trolley connecting plate 250, so that the mold can be quickly transferred. The material extruder 400 is mainly used to liquefy the gel material and send it into the mold cavity 250 through the material pipeline 410. It is usually directly connected to the flow channel 511 for material extrusion.

[0084] In step A1 of the mold assembly process, the cutting mechanism 500 is first installed on the end mold 370, and then the end mold 370 with the cutting mechanism 500 is fixedly installed on the base plate 260. Next, the two outer molds 311 are fixed to the two outer mold slides 220 respectively. After the outer mold slides 220 push them closer and engage with each other, they are then connected to each other.

[0085] In step A2, after the inner mold 310 and the mold core 330 are installed, the entire assembly including the mounting base 200 is hoisted and fixed onto the automatic trolley 110, and normal extrusion production can then commence.

[0086] After the product is formed and the mold cools, the material is first sheared by the 500 cutting mechanism at the material inlet, and then the mold can be disassembled, as shown above:

[0087] In step B1, loosen bolt A335 and remove pressure plate 332 to disconnect the mold core 330 from the 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 the mold core 330 to a certain height and then put it back, generally at the design distance, which is relatively small. Then restore pressure plate 332 and tighten bolts A335 and C362. During this step, the lifting distance of the mold core 330 is relatively short. Its main purpose is to use the mold core 330 to loosen the inner mold 320, which is conducive to the loosening of the outer mold.

[0088] In step B2, 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. Figure 30 As shown.

[0089] In step B3, the inner mold 320 and mold core 330 with the product attached are hoisted 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. Bolt A335 is loosened, and the pressure plate 332 is removed. Bolt C362 corresponding to the small inner mold 321 is loosened, and the connection between the cover plate 323 corresponding to the small inner mold 321 and the adapter flange 360 ​​is released. Then, the mold core 330 is hoisted upwards, and the small inner mold 321 is removed together using the linkage structure. 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.

[0090] In step B4, during the specific operation, the large inner mold 322 needs to be slightly swung to the opposite side to separate it from the product before being lifted upwards. This can prevent the product from being lifted together during the lifting process. Finally, after lifting it away from the transition flange 360 ​​and securing the product with ropes, it can be lifted out through the inlet / outlet 611. Utilizing the side-opening inlet / outlet 611 can reduce the lifting height and make the operation relatively easier.

[0091] 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 mold for producing a large size rubber sleeve, characterized by: The mold comprises an outer mold (310), an inner mold (320), an end mold (370), and a mold core (330) inside the inner mold (320), wherein the outer mold (310) and the inner mold (320) are vertically coaxial, the outer mold (310), the inner mold (320), and the end mold (370) jointly form a mold cavity (350), the inner mold (320) is a hollow petal-shaped structure, the mold core (330) and the inner mold (320) and the outer mold (310) have relative fixing structures, and the mold core (330) and the inner mold (320) have linkage structures.

2. The large size rubber tube body production mold according to claim 1, characterized by: The outer mold (310) is split, comprising two vertically opposite split outer molds (311), and the two split outer molds (311) have a clamping structure.

3. The large size rubber tube body preparation mold according to claim 2, characterized by: The split outer mold (311) has a lower arc-shaped flange (312) protruding along the length direction at the bottom.

4. The large size rubber tube body preparation mold according to claim 1, wherein: The inner mold (320) comprises at least two small inner molds (321) and two large inner molds (322) arranged opposite to each other, and the small inner molds (321) and the large inner molds (322) are cross-distributed, and the top of each of the small inner molds (321) and the large inner molds (322) is fixedly connected with a split cover plate (323). The mold core (330) is provided with a lifting ring (331) at the top, and a pressing plate (332) corresponding to each split cover plate (323) is arranged, and the pressing plate (332) is connected and fixed with the corresponding split cover plate (323) through a bolt A (335). The outer mold (310) is provided with an adapter flange (360) at the top, the adapter flange (360) is connected and fixed with the outer mold (310) through a bolt B (361), and is connected and fixed with each split cover plate (323) through a bolt C (362).

5. The large size rubber tube body preparation mold according to claim 4, characterized by: The mold core (330) is a multi-faceted truncated cone with a small lower part and a large upper part, and the mold core (330) and the inner mold (320) have a sliding fit structure.

6. The large size rubber tube body preparation mold according to claim 5, wherein: The sliding fit structure comprises a sliding groove (333) arranged on the mold core (330) and a sliding rail (324) arranged on each petal of the inner mold (320) and matched with the corresponding sliding groove (333). At least two small inner molds (321) are provided with a linkage block (325) near the top inside, the linkage block (325) protrudes opposite to the mold core (330), one side of the mold core (330) corresponding to the linkage block (325) is provided with a limiting recess (334) arranged along the height direction, the limiting recess (334) is located above the sliding groove (333), and the linkage block (325) protrudes into the corresponding limiting recess (334).

7. The mold for preparing a large size rubber tube body according to any one of claims 4 to 6, characterized in that: The central angle corresponding to the small inner mold (321) gradually decreases from top to bottom, and the central angle corresponding to the large inner mold (322) gradually increases from top to bottom.

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