CN112536943A - Integrated vacuum rubber sealing gasket and production mold and production method thereof - Google Patents

Abstract

The invention discloses an integrated vacuum rubber sealing gasket and a production mold thereof, wherein the production mold comprises: a mold body and a fixing device; the die body includes: the glue storage tank comprises a mould chassis, wherein a plurality of lower cavity tank bodies are arranged on the mould chassis, and a glue storage tank body is arranged between two adjacent lower cavity tank bodies; the mould cover body is arranged corresponding to the mould chassis and provided with a plurality of upper cavity groove bodies, and a glue storage groove body is arranged between two adjacent upper cavity groove bodies; the die base plate is connected with the die cover body in a closed mode, so that the lower cavity groove body and the upper cavity groove body form a closed cavity; the fixing device includes: at least one spud pile extending through the mold base and the mold cover. Through the vacuum rubber sealing gasket, the yield and the quality in unit time are effectively improved, a large amount of manpower input can be saved, defective products are reduced, and the vacuum rubber sealing gasket with high density, high strength, ageing resistance and long service life can be provided.

Description

Integrated vacuum rubber sealing gasket and production mold and production method thereof

Technical Field

The invention relates to the technical field of preparation of vacuum rubber sealing gaskets, in particular to an integrated vacuum rubber sealing gasket, a production mold and a production method thereof.

Background

In the field of production and manufacturing of vacuum rubber gaskets, the traditional production and manufacturing process is generally adopted at present, namely, a raw rubber sheet cut or sheared into a preset shape is placed in a mold, and then processes such as vulcanization, connection, continuous vulcanization, joint and the like are carried out. By adopting the mode, the sheet stock is directly placed into the die for processing, in the vulcanization process, gaps and impurities inevitably exist between the sheets, the sheet stock is vulcanized on the basis of natural stacking accumulation, gas and impurities exist in the gaps between the sheets, the gas and the impurities are easy to remain in the rubber mat, the strength and the density of the rubber mat can not be ensured, and even the delamination phenomenon can occur, so that the quality standard and the service life of the rubber mat are reduced, bubbles or pockmarks often appear on the appearance of a finished product, the smoothness of the appearance is influenced, and even the finished product can be treated as waste products or defective products.

In addition, the mold for producing the vacuum rubber sealing gasket provided in the prior art is basically a single mold, namely only one vacuum rubber sealing gasket finished product can be produced and processed each time, and the production efficiency is very low. It is expected by those skilled in the art that the production efficiency can be improved over the conventional techniques and that mass or integrated production and processing can be performed. However, in the process of modifying the existing production mold, many technical problems which cannot be overcome occur, for example, how to avoid the problem that the product thickness is uneven due to excessive rubber edges caused by excessive rubber overflow in the vulcanization process, how to solve the problem that the processing is failed due to excessive temperature in the vulcanization and continuous vulcanization processes, or how to ensure that the mold can be compacted tightly in the mass production, and the like.

Disclosure of Invention

In order to solve the practical problems in the prior art, the invention provides an integrated vacuum rubber sealing gasket, a production mold and a production method thereof.

According to an aspect of the present invention, there is provided an integrated vacuum rubber gasket production mold, including: a mold body and a fixing device; the die body includes: the glue storage tank comprises a mould chassis, wherein a plurality of lower cavity tank bodies are arranged on the mould chassis, and a glue storage tank body is arranged between two adjacent lower cavity tank bodies; the mould cover body is arranged corresponding to the mould chassis and provided with a plurality of upper cavity groove bodies, and a glue storage groove body is arranged between two adjacent upper cavity groove bodies; the die base plate is connected with the die cover body in a closed mode, so that the lower cavity groove body and the upper cavity groove body form a closed cavity; the fixing device includes: at least one spud pile extending through the mold base and the mold cover.

The lower cavity groove body is in a linear or arc shape along the longitudinal direction of the die, and the shape of the upper cavity groove body is the same as that of the lower cavity groove body.

The locating block is arranged at one end of the lower cavity groove body, a core is arranged at the center of the locating block along the longitudinal center extension line of the lower cavity groove body, and the core is in a long and narrow cylindrical shape.

Wherein, the one end of core stretches out the locating piece, the other end of core stretches out the other end of cavity of resorption cell body.

The die comprises a die body, a lower cavity groove body and a baffle, wherein the baffle is arranged at one end or two ends of the lower cavity groove body, the height of the baffle is the same as that of a closed cavity formed by the lower cavity groove body and the upper cavity groove body, and the width of the baffle is the same as that of the die body.

And through holes are formed in both ends of the mold chassis and both ends of the mold cover body.

After the mold base plate and the mold cover body are closed, the fixing pile penetrates through the closed cavity, and a compaction device is arranged at the upper end, extending out of the mold cover body, of the fixing pile.

An integrated vacuum rubber gasket manufactured according to the integrated vacuum rubber gasket production mold.

According to another aspect of the present invention, there is also provided a method of producing an integrated vacuum rubber gasket, including: providing a rubber sheet, and extruding the rubber sheet into a rubber tube; cutting a plurality of sections of raw rubber pipe bodies with the same length from the raw rubber pipes, and sequentially putting the raw rubber pipe bodies into a closed cavity formed by a lower cavity groove body and an upper cavity groove body, wherein the length of each raw rubber pipe body is greater than that of the closed cavity; carrying out first heating vulcanization treatment on the tube body of the raw rubber tube in the closed cavity; taking out the vulcanized pipe body from the closed cavity, and cutting and trimming the raw rubber pipe body along the position of the rubber storage groove bodies arranged between the upper cavity groove bodies to obtain a standard pipe body; respectively placing parts of the two sections of standard pipe bodies into the closed cavity, enabling the two sections of pipe bodies to be tightly attached end to end, carrying out second heating vulcanization treatment on the continuously connected raw rubber pipe bodies in the closed cavity, and continuously connecting the pipe bodies in the closed cavity; sequentially splicing the multiple sections of standard pipe bodies; providing an external support tube, inserting one end of the tube body after continuous connection into one end of the external support tube, inserting the other end of the tube body into the other end of the external support tube, and tightly butting the two ends of the tube body in the external support tube; and placing the external support pipe into the closed cavity for third heating vulcanization treatment to obtain the closed-loop integrated vacuum rubber sealing gasket.

An integrated vacuum rubber gasket manufactured according to the production method of the integrated vacuum rubber gasket

By adopting the technical scheme provided by the invention, the yield and the quality in unit time are improved, a large amount of manpower input can be saved, the occurrence of defective products is reduced, and the vacuum rubber sealing gasket with high density, high strength, ageing resistance and long service life can be provided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic top view of an integrated large-scale vacuum rubber gasket production mold according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of the integrated large-scale vacuum rubber gasket production mold shown in FIG. 1 according to the present invention;

FIG. 3 is a schematic front view of the integrated large-scale vacuum rubber gasket production mold shown in FIG. 1 according to the present invention;

FIG. 4 is a schematic cross-sectional view of the integrated large-scale vacuum rubber gasket production mold shown in FIG. 1 according to the present invention;

FIG. 5 is a schematic cross-sectional view of the integrated large-scale vacuum rubber gasket production mold shown in FIG. 1 according to the present invention;

FIG. 6 is a schematic top view of a mold for producing an integrated large-sized vacuum rubber gasket according to another embodiment of the present invention;

FIG. 7 is a schematic view showing the internal structure of the mold for producing the integrated large-sized vacuum rubber gasket shown in FIG. 6 according to the present invention;

FIG. 8 is a schematic cross-sectional view of the integrated large-scale vacuum rubber gasket production mold shown in FIG. 6 according to the present invention;

fig. 9 is a schematic cross-sectional view of another embodiment of the integrated large-sized vacuum rubber gasket producing mold shown in fig. 6 according to the present invention.

Description of the reference numerals

100 mould body

110 mould base plate

111 lower cavity trough body

112 glue storage tank body

113 positioning block

114 core

115 baffle

116 lower through hole

120 mould cover

121 upper cavity groove body

122 glue storage tank body

123 upper through hole

201 spud pile

202 pressure spring mechanism

203 a screw locking mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The embodiment of the invention provides an integrated vacuum rubber sealing gasket production mold and also provides an integrated vacuum rubber sealing gasket manufactured according to the integrated vacuum rubber sealing gasket production mold.

Fig. 1-2 disclose a first embodiment of the invention. The embodiment can be used for producing large vacuum rubber sealing gaskets, and is particularly suitable for producing and processing solid vacuum rubber sealing gaskets. In this application, a sheet stock or other shaped stock material cut or sheared into a predetermined shape is placed in a mold and subjected to a vulcanization process. According to the idea of the invention, the film stock is placed in an external extruder, the die of the machine head is adjusted according to the preset size and specification, and the film stock is extruded into the film stock, so that the film stock does not need to be cut or cut. More importantly, the film stock can be very tightly squeezed under the action of external force of squeezing, and good conditions are provided for obtaining a high-density and high-strength sealing gasket. The inner diameter of the pipe body of the extruded raw rubber pipe is larger than the diameter of the cavity of the hollow rubber pad, and the outer diameter of the extruded raw rubber pipe is larger than the outer diameter of the hollow rubber pad body. The mold 100 includes a mold base 110 and a mold cover 120. The mold base 110 may have two or more lower cavity grooves 111, for example, two, three, five, ten or more lower cavity grooves may be provided according to actual requirements and requirements of finished product size, and no further limitation is made herein. As shown in fig. 1 and 2, the lower chamber body 111 is preferably arc-shaped, and may be linear or have another shape. In the charging process, the crude rubber tube is cut into a section according to the length of the integrated vacuum rubber sealing gasket production mold and is placed into the lower cavity groove body one by one, and the length of the crude rubber tube is greater than that of the mold. The glue storage groove bodies 112 are arranged between the adjacent lower cavity groove bodies 111, the number of the glue storage groove bodies is not limited, and the glue storage groove bodies can be one, or two or three glue storage groove bodies which are arranged in parallel, and the glue storage groove bodies are in the scope of the invention concept as long as the mode is easy to store raw glue and is beneficial to separation and cutting. The upper cavity body 121 and the lower cavity body 111 have the same shape, and when the upper cavity body 121 and the lower cavity body 111 are closed, a closed cavity is formed, as shown in fig. 3, referring to the disclosure of the closed cavity, the closed cavity is arranged one by one, and the cross section of the closed cavity can be made into various shapes according to the actual requirements of the finished product, such as a circle, an oblate, a triangle, a rectangle, an ellipse, a drum, and the like, and the shape of the closed cavity is not particularly limited. A glue storage groove body 112 is arranged between the adjacent closed cavities. The cross-sectional shape of the glue storage tank 112 may be rectangular or circular or any other shape, and is not further limited herein.

After the mold base 110 and the mold cover 120 of the mold 100 are closed, a baffle 115 is disposed at one end or both ends of the mold base 110 where the raw rubber tube is disposed, as shown in fig. 4, the height of the baffle 115 is the same as the height of the closed cavity formed by the lower cavity groove 111 and the upper cavity groove 121, and the width of the baffle 115 is the same as the width of the mold body 100.

The baffle 115 is made of metal or any heat-resistant material and is used for inhibiting the flow of raw rubber in the vulcanization process and playing a role in blocking. Therefore, the defects of material shortage, depression, pockmarks and the like of the produced finished rubber pad can be prevented. The baffle 115 has a certain thickness and load-bearing capacity, and is vertically disposed and detachably connected to the lower chamber body 111, for example, by being inserted, snapped, or provided with an anchor for fixing the baffle 115, and the like to be engaged with the lower chamber body 111.

As shown in fig. 5, another embodiment of the present invention is disclosed. In this embodiment, the lower cavity groove 111 is linear, and three lower cavity grooves 111 are schematically arranged one by one in fig. 5, but the number of the lower cavity grooves is not further limited in the present invention. The upper cavity groove body 121 and the lower cavity groove body 111 are the same in shape, and form a closed cavity after the upper cavity groove body and the lower cavity groove body are closed, wherein the closed cavity can be in any shape. After the raw rubber sheet is put into an extruder, the mouth shape of the machine head is adjusted according to the specification of a required finished product, and therefore a mould with a corresponding closed cavity section shape is selected for subsequent operation. The embodiments can produce solid vacuum rubber gaskets, and can also produce hollow vacuum rubber gaskets. Fig. 6 is a schematic cross-sectional view of such an embodiment.

If the hollow vacuum rubber gasket is produced, a positioning block 113 can be arranged at one section of the lower cavity body of the mold, the shape of the positioning block 113 is matched with that of the closed cavity body, and the positioning block 113 is schematically arranged into a cylindrical shape in fig. 7 and shows the condition that one end of the positioning block 113 is arranged. One end of a lower cavity groove body 111 of the die 100 is provided with a positioning block 113, the center of the positioning block is provided with a core body along the longitudinal central extension line of the lower cavity groove body, the core body is in a long and narrow cylinder or any shape and extends to the other end of the lower cavity groove body of the die, in the charging process, one end of a cut raw rubber tube is sleeved on the positioning block at one end of the die, the core body passes through the raw rubber tube, and the other end of the raw rubber tube is sleeved on the positioning block at the other end of the die; i.e. the two ends of the core extend beyond the two ends of the mould.

In fact, in the first step of molding the vulcanized rubber hose, the positioning blocks 113 are disposed at two ends of the mold, and starting from the center of the positioning blocks 113, the core 114 is disposed along the extension line of the longitudinal center of the lower cavity groove 111, the core 114 has a shape of a long and narrow cylinder, and the length of the core 114 can be designed to be greater than the length of the mold, that is, one end of the core 114 can extend into the inner side of the positioning block 113, and the other end of the core 114 can extend out of the other end of the lower cavity groove 111 and into the positioning block 113 at the other end. The benefits of this are: firstly, when the rubber sheet is extruded into a rubber tube with any length, the length of the rubber tube can be slightly larger than the length of the mould; the core body 114 should be ensured to penetrate through the whole raw rubber tube, so that a certain margin of raw rubber heads can be reserved at two ends, and the continuous vulcanization process can be smoothly implemented; second, the core 114 can be easily extracted, and the surface of the core needs to be coated with a proper amount of mold release agent. After the core 114 is extracted, a rubber tube body with a hollow structure is formed. When the vulcanization process is continued, a positioning block 113 may be provided at only one end of the lower cavity groove 111 of the mold 100; when the process proceeds to the splicing process, the positioning block 113 needs to be removed, and the core 114 needs to be extracted and separated from the positioning block 113.

In the actual production process, the raw rubber tube is heated and vulcanized in the mold 100, and the process of the first mold is completed according to different vulcanization temperatures and different vulcanization times of raw rubber. During the first mold cure, baffles 115 may be provided on both sides of the mold to block the flow of green rubber, as described above. In the second mold continuous vulcanization process, the baffle 115 is removed, and the tube continuous process is performed. In this case, in order to prevent the connection failure caused by the raw rubber becoming the aged rubber when the temperature is too high or the time is too long at both ends of the reserved raw rubber tube, the temperature of the mold must be strictly controlled. Therefore, through holes 116 and 123 are respectively formed at two ends of the mold base 110 and two ends of the mold upper cover 120, and channels are respectively formed inside the mold base 110 and the mold upper cover 120 to form a circulating water cooling system, so that the temperature in the mold 100 is controlled, and the problem that the rubber tube body cannot be connected due to overhigh vulcanization temperature is prevented. In order to realize the function, circulating water tanks may be provided at the bottom and around the mold 100, and a flow guide device may be provided to guide water flow into the lower through hole 116 and the upper through hole 123 to form a circulating cooling system, thereby continuously controlling the temperature. Therefore, it can be understood that the circulating cooling process can be synchronously started when the first mold vulcanization process, the second mold continuous vulcanization process and the joint vulcanization process are carried out, and the purpose is to reasonably control the temperature of materials at the joint in the mold in a high-temperature state so as to avoid the situations of mature waste products or defective products and the like.

The overflow and storage problems of the raw rubber are difficult to solve by adopting the integrated production mould for production, so that the batch production or the integrated production cannot be possible. Therefore, through a large amount of flow tests, the inventor of the invention sets the glue storage groove body 112 between two adjacent groove bodies, and sets the glue storage groove body 112 to be a structure with fixed width or adjustable width according to the specific conditions of the width of the groove body, the size specification of a finished product and the like, so that in the vulcanization process of the raw rubber tube, the overflowed raw rubber can be orderly managed, and the condition that the product is abnormal or fails in vulcanization can not be caused. In addition, after the mature rubber tube body is taken out of the integrated vacuum rubber gasket production mold, the effective rubber tube body can be cut and trimmed along the position of the mold rubber storage groove body 112, so that a plurality of rubber tube bodies with raw rubber tubes at two ends are obtained, and the subsequent operation is carried out.

The splicing step is carried out in this manner. Placing the raw rubber tube at one end of the tube body and a part of the tube body into a mould 100, and continuing to join the raw rubber tube in the mould, so that the front end of the continuously joined raw rubber tube is tightly attached to the front raw rubber tube, the rear end of the continuously joined raw rubber tube extends out of the mould, and the raw rubber tube is cut off from the long raw rubber tube. By using the integrated production die, the splicing work can be completed in batches or in an integrated manner, and the working efficiency is improved.

And after the continuous connection process is finished, performing a second mold continuous vulcanization process. And heating and vulcanizing the jointed pipe body again, wherein the vulcanizing temperature and time are not limited here. The second mould continues the vulcanization and can vulcanize many pipes that are continued simultaneously, links together many pipes, and the output capacity has obtained the increase of fold.

Finally, in the joint vulcanization process, one end of the pipe body is inserted into an external support pipe, the two ends of the pipe body are butted, the other end of the external support pipe is inserted into the other end of the pipe body, the joint is placed into the mold 100, a raw rubber pipe is continuously connected or redundant raw rubber pipes are cut off according to the length requirement, the heating vulcanization is carried out, the vulcanization temperature is controlled to be 170-185 ℃, and the vulcanization time is 55-65 minutes. Both ends of a long pipe body connected by a plurality of pipe bodies are connected by a joint vulcanization process, thereby forming a large-sized vacuum rubber gasket.

Further, in some embodiments, the present invention further provides a device for fixing and compacting the raw rubber tube body in the mold 100 during the vulcanization, the successive vulcanization and the joint vulcanization, that is, before the first mold vulcanization, the second mold vulcanization and the joint vulcanization, the fixing and compacting process is performed, after the mold base 110 and the mold cover 120 are closed, at least one fixing peg 201 is used to penetrate through the mold base 110 and the mold cover 120, the fixing peg 201 extends out of the upper end of the mold cover 120, and a compacting device is added for further compacting the mold cover towards the mold base. Because the invention is used for the production and processing of large-scale vacuum rubber sealing gaskets, and the rubber gasket can swing and twist back and forth in the vulcanization process and can not keep relatively static and balanced, which may cause the damage and extrusion of the rubber gasket, when the mold base 110 and the mold cover 120 are closed, a fixing device is arranged to fix and press the rubber gasket, such as a fixing pile 201, which can fix the rubber gasket in the mold cavity, greatly reducing the manpower input in processing, and simultaneously ensuring the qualification rate and quality of the product, as in the embodiment shown in fig. 8, the fixing pile 201 penetrates through the mold base 110 and the mold cover 120, and when the two are closed, preferably, a compacting device can be sleeved on the upper side of the mold cover 120, and can provide relative pressure for fixing and pressing the mold base 110 and the mold cover 120, a certain margin moving space can be provided, so that the temperature of the raw rubber tube in the die 100 is kept in a relatively stable state, and the excessive temperature caused by the excessive sealing and the tight sealing can be avoided. For this purpose, it is conceivable to use an elastic member, such as a compression spring mechanism 202, to achieve the pressing, or to provide a screw locking member 203 at the end of the fixing pile 201 extending out of the mold cover 120, for locking the mold base 110 and the mold cover 120 of the mold 100 within a certain range according to actual requirements, as shown in fig. 9.

In some preferred embodiments, a plurality of studs 201 and associated compression devices may be provided along the peripheral edge of the mold 100 to achieve a better press fit. For example, as shown in fig. 8 and 9, where the mold cover 120 is provided with a fixture at one end and an opposite end (not shown), a level gauge or any other external device capable of providing monitoring capability may be provided between the two 201 to produce a standard finished product in order to provide uniform compaction force and compaction.

In the continuous process and the jointing process, two ends of the raw rubber tube are required to be jointed together to form a finished vacuum rubber sealing gasket, at the moment, the joints at the two ends are both provided with the fixing device 201 and the compacting device 202 or 203, when jointing is carried out, one compacting device can be removed, and only one fixing device 201 and one compacting device 202 or 203 are arranged at the joint point, so that a good jointing effect is realized. In practical operation, the joint process is particularly critical, the rubber tube head is easily changed into a glue-cured state because the temperature of each vulcanization stage is in a high-temperature state, and once the rubber tube head is changed into the glue-cured state, the joint is difficult to carry out. Therefore, the fixing device and the compacting device are arranged at the joint, and a better joint effect can be realized under the action of external force. Of course, the compacting device can be replaced by any device and component capable of providing elastic pressure, and any device and component capable of achieving the functions are all within the scope of the invention.

According to an embodiment of the present invention, there is provided a method for producing an integrated vacuum rubber gasket, including:

step 1, providing a rubber sheet, and extruding the rubber sheet into a rubber tube;

step 2, cutting a plurality of sections of raw rubber pipe bodies with the same length from the raw rubber pipes, and sequentially putting the raw rubber pipe bodies into a closed cavity formed by a lower cavity groove body and an upper cavity groove body, wherein the length of each raw rubber pipe body is greater than that of the closed cavity; that is, the two ends of the tube body of the raw rubber tube are partially outside the closed cavity.

Step 3, carrying out first heating vulcanization treatment on the tube body of the raw rubber tube in the closed cavity; the portion of the green rubber tube body outside the closed cavity is not heat cured.

And 4, taking out the vulcanized pipe body from the closed cavity, and cutting and trimming the raw rubber pipe body along the position of the rubber storage groove bodies arranged between the upper cavity groove bodies to obtain a standard pipe body.

Step 5, respectively placing parts of the two sections of standard pipe bodies into the closed cavity, enabling the two sections of pipe bodies to be tightly attached end to end, carrying out second heating vulcanization treatment on the continuously connected raw rubber pipe bodies in the closed cavity, and continuously connecting the pipe bodies in the closed cavity; and sequentially splicing the multiple sections of standard pipe bodies.

The method comprises the following steps of connecting a plurality of sections of standard pipe bodies, heating and vulcanizing the parts, which are not subjected to heating and vulcanizing treatment, at the two ends of the raw rubber pipe body to connect two sections of standard pipe bodies, and then connecting a new section of standard pipe body with the two sections of standard pipe bodies which are connected continuously, so that the plurality of sections of standard pipe bodies are connected into a section of longer continuous pipe body, and the parts at the two ends of the longer continuous pipe body are not subjected to heating and vulcanizing treatment.

Step 6, providing an external support tube, inserting one end of the tube body after splicing into one end of the external support tube, inserting the other end of the tube body into the other end of the external support tube, and tightly butting the two ends of the tube body in the external support tube; and placing the external support pipe into the closed cavity for third heating vulcanization treatment to obtain the closed-loop integrated vacuum rubber sealing gasket.

The step is used for connecting the parts of the two ends of the longer connecting pipe body which are not subjected to heating vulcanization treatment into a closed-loop integrated vacuum rubber sealing gasket through heating vulcanization.

According to the purpose of the invention, the vacuum rubber gasket obtained by using the integrated production die and the manufacturing method thereof can be applied to the manufacturing of not only a solid rubber gasket but also a hollow rubber gasket. The finished product comprises a vacuum sealing gasket tube body 301 and a tube body section 302, wherein the tube body 301 is arc-shaped or linear, and the tube body section 302 is circular, oval or drum-shaped, and the like, and is not further limited herein. When the pipe body 301 is a straight type, the center of the pipe body 301 has a hollow inner cavity 303 extending along the longitudinal extension line of the center of the pipe body. Compared with products prepared by the traditional process, the product obtained by adopting the technical means of the invention has obviously better density and strength than products prepared by the traditional process, and has excellent performances in sealing performance, wear resistance and service life.

After a single-mode production mold is improved to an integrated vacuum rubber sealing gasket production mold, a technical means required by installation equipment needs to be considered. The quality of an integrated production mould is much higher than that of a single-mould production mould, and manual movement cannot be carried out, so that a plurality of installation modes can be considered. Besides the fixed mounting mode, the integrated mounting with the vulcanizing machine can be considered. Specifically, a thick steel plate with an area larger than that of the vulcanizing machine flat plate is respectively fixed on the vulcanizing machine upper flat plate and the vulcanizing machine lower flat plate so as to weld a mold on the thick steel plate. If the welding is directly carried out on the vulcanizing plate, the vulcanizing plate is easy to damage. After welding, the positions of the mold base 110 and the mold cover 120 are adjusted to be corresponding, that is, the mold cover 120 is welded on the upper vulcanizing plate, and the mold base 110 is welded on the lower vulcanizing plate. Thus, the two parts of the mold 100 can be opened or closed by the displacement caused by the raising and lowering of the vulcanizer. The improvement is completed without adopting excessive devices, and multiple technical effects are skillfully realized.

According to the technical scheme provided by the invention, the one-die-one-production mode in the prior art is improved in an integrated manner, so that batch and integrated production becomes possible, and meanwhile, on the premise of realizing batch and integrated production, the glue storage grooves are arranged among the lower cavity groove bodies of the die chassis, so that redundant overflowing raw glue bodies can be received when the raw glue is extruded, and the volume and size requirements of products are ensured. Meanwhile, the baffle plates at one end or two ends of the mold can further block the flow of crude rubber, and avoid the generation of material shortage, depression or pockmark and pockmark of a finished product. In addition, through holes are formed in the two ends of the mold base plate and the two ends of the mold cover body and used for providing a circulating cooling water system, and the situation that continuous vulcanization cannot be performed due to over vulcanization at high temperature can be avoided. Further, in the integrated production process, the twisting and unbalanced phenomena of the mold chassis inevitably occur during vulcanization of a plurality of rubber mats, damage and extrusion conditions of the rubber mats are possibly caused, and therefore when the mold chassis and the mold cover are closed, the fixing pile and the compacting device are arranged, the rubber mats in the mold cavity can be fixed, the manpower input during processing is greatly reduced, and the qualification rate and the quality of products are ensured. Particularly, the integrated large-scale vacuum rubber sealing gasket production mold can be suitable for the integrated production of solid vacuum rubber sealing gaskets and also can be applied to the integrated production of hollow vacuum rubber sealing gaskets, and the produced product has very high density and strength, excellent wear resistance and greatly prolonged service life, so that the process level and the production efficiency in the production and manufacturing field of the vacuum rubber sealing gaskets are promoted on the whole.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an integrated form vacuum rubber sealing gasket production mould which characterized in that includes: a mold body and a fixing device;

the die body includes:

the glue storage tank comprises a mould chassis, wherein a plurality of lower cavity tank bodies are arranged on the mould chassis, and a glue storage tank body is arranged between two adjacent lower cavity tank bodies;

the mould cover body is arranged corresponding to the mould chassis and provided with a plurality of upper cavity groove bodies, and a glue storage groove body is arranged between two adjacent upper cavity groove bodies;

the die base plate is connected with the die cover body in a closed mode, so that the lower cavity groove body and the upper cavity groove body form a closed cavity;

the fixing device includes: at least one spud pile extending through the mold base and the mold cover.

2. The mold according to claim 1, wherein the lower cavity groove body is linear or arc-shaped along the longitudinal direction of the mold, and the shape of the upper cavity groove body is the same as that of the lower cavity groove body.

3. The mold according to claim 1, wherein a positioning block is arranged at one end of the lower cavity groove body, a core is arranged at the center of the positioning block along the longitudinal central extension line of the lower cavity groove body, and the core has a long and narrow cylindrical shape.

4. The mold according to claim 3, wherein one end of the core extends out of the positioning block, and the other end of the core extends out of the other end of the lower cavity body.

5. The die as claimed in claim 1, wherein a baffle is arranged at one end or two ends of the lower cavity groove body, the height of the baffle is the same as that of a closed cavity formed by the lower cavity groove body and the upper cavity groove body, and the width of the baffle is the same as that of the die body.

6. The mold of claim 1, wherein through holes are provided at both ends of the mold base and both ends of the mold cover.

7. A mould as claimed in claim 1, wherein the spud extends through the closed cavity after the mould base and the mould cover are closed, and the spud is provided with a compacting means at its upper end projecting beyond the mould cover.

8. An integrated vacuum rubber gasket manufactured by the integrated vacuum rubber gasket production mold according to any one of claims 1 to 7.

9. A production method of an integrated vacuum rubber sealing gasket is characterized by comprising the following steps:

providing a rubber sheet, and extruding the rubber sheet into a rubber tube;

cutting a plurality of sections of raw rubber pipe bodies with the same length from the raw rubber pipes, and sequentially putting the raw rubber pipe bodies into a closed cavity formed by a lower cavity groove body and an upper cavity groove body, wherein the length of each raw rubber pipe body is greater than that of the closed cavity;

carrying out first heating vulcanization treatment on the tube body of the raw rubber tube in the closed cavity;

taking out the vulcanized pipe body from the closed cavity, and cutting and trimming the raw rubber pipe body along the position of the rubber storage groove bodies arranged between the upper cavity groove bodies to obtain a standard pipe body;

respectively placing parts of the two sections of standard pipe bodies into the closed cavity, enabling the two sections of pipe bodies to be tightly attached end to end, carrying out second heating vulcanization treatment on the continuously connected raw rubber pipe bodies in the closed cavity, and continuously connecting the pipe bodies in the closed cavity; sequentially splicing the multiple sections of standard pipe bodies;

providing an external support tube, inserting one end of the tube body after continuous connection into one end of the external support tube, inserting the other end of the tube body into the other end of the external support tube, and tightly butting the two ends of the tube body in the external support tube; and placing the external support pipe into the closed cavity for third heating vulcanization treatment to obtain the closed-loop integrated vacuum rubber sealing gasket.

10. An integrated vacuum rubber gasket manufactured by the method for manufacturing an integrated vacuum rubber gasket according to claim 9.

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