CN114953278B - Sealing washer connects circle forming die structure - Google Patents
Sealing washer connects circle forming die structure Download PDFInfo
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- CN114953278B CN114953278B CN202210528077.0A CN202210528077A CN114953278B CN 114953278 B CN114953278 B CN 114953278B CN 202210528077 A CN202210528077 A CN 202210528077A CN 114953278 B CN114953278 B CN 114953278B
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- vulcanization
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- 238000007789 sealing Methods 0.000 title claims abstract description 92
- 238000004073 vulcanization Methods 0.000 claims abstract description 65
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000000465 moulding Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims description 25
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 230000000694 effects Effects 0.000 description 7
- 238000004321 preservation Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 230000005574 cross-species transmission Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005267 amalgamation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application relates to the field of sealing ring manufacturing, in particular to a sealing ring joint ring forming die structure. The key points of the technical scheme are as follows: the sealing device comprises a template group, a semi-vulcanization assembly and a sealing device, wherein a plurality of strip-shaped cavities are formed in the template group, two ends of each strip-shaped cavity are respectively opened on the template group, each strip-shaped cavity is used for forming sealing strips and placing at least two sealing strips, the semi-vulcanization assembly is arranged on the template group and is respectively positioned at two ends of each cavity, and a semi-vulcanization groove communicated with each cavity is formed in the semi-vulcanization assembly so that raw material strips can cross the cavities and the semi-vulcanization grooves; the cooling assembly is connected with a cooling water channel in the semi-vulcanization assembly, and enables the molding temperature of the semi-vulcanization assembly to be lower than that of the template group.
Description
Technical Field
The application relates to the field of sealing ring manufacturing, in particular to a sealing ring joint ring forming die structure.
Background
The sealing ring is a sealing part widely used in industrial mechanical equipment, has the requirements of corrosion resistance, tear resistance, wear resistance, heat resistance, cold resistance, chemical resistance and the like according to different working condition requirements in practical application, can meet the sealing requirements of different kinds of equipment, and has excellent application prospects in industry.
At present, the sealing ring is mainly formed by injection or hot-press vulcanization in the forming process, wherein the hot-press vulcanization forming is widely applied, a hot-press die is needed in the forming process, a raw material strip is placed in a cavity of the die, and the sealing ring workpiece consistent with the shape of the cavity is finally obtained by mutually pressing an upper die and a lower die.
Because of different equipment use requirements, the sealing rings usually have a plurality of different specifications, such as different line lengths and inner diameters, and the sealing rings with different specifications usually need to be independently produced by using a plurality of groups of dies with different specifications in the production process, however, the above arrangement can cause excessive die manufacturing cost; in the related art, there is a sealing ring joint circle forming die, but the die cavity that has the different internal diameter specifications of shaping multiunit, the die cavity is used for the sealing strip of shaping sealing washer, simultaneously, the outside opening of die cavity in the template, so that the die cavity is in the shaping sealing strip, can also put into two sealing strips simultaneously, carry out vulcanization shaping with the tip of two sealing strips, realize connecting the sealing strip, link to each other many sealing strips in proper order and will be located sealing strip head and the tail connection, obtain adaptable jumbo size length's sealing washer product, realize that a pair of mould is to the product shaping of multiunit different size specifications, overcome the too high and difficult defect of producing jumbo size sealing washer of mould cost.
However, in the process of producing the sealing ring through the process, the two ends of the cavity are usually required to be cooled through a cooling system, so that a high-temperature area for vulcanization, a transition area for immature raw materials and a low-temperature area for maintaining immature raw materials are formed in the mold, and the connection of the sealing strip is realized through butt joint of the immature areas of the raw materials; however, after the long-term operation of the mold heating time and the cooling system, the temperature unbalance of the mold is easy to cause, the vulcanization area is difficult to determine, the molding length of the sealing strip is inconsistent, the quality control in the molding process of the sealing strip is affected to a certain extent, and the mold structure also has a large improvement space.
Disclosure of Invention
In order to accurately control a vulcanization area, the application provides a sealing ring joint ring forming die structure.
The application provides a sealing ring connecting ring forming die structure which adopts the following technical scheme:
the sealing ring connecting ring forming die structure comprises a die plate group, a semi-vulcanization assembly and a sealing ring connecting ring forming die, wherein a plurality of strip-shaped die cavities are arranged in the die plate group, two ends of each strip-shaped die cavity are respectively opened on the die plate group, each strip-shaped die cavity is used for forming sealing strips and placing at least two sealing strips, the semi-vulcanization assembly is arranged on the die plate group and is respectively positioned at two ends of each die cavity, and semi-vulcanization grooves communicated with the die cavities are formed in the semi-vulcanization assembly so that raw material strips can cross the die cavities and the semi-vulcanization grooves; and the cooling component is connected with a cooling water channel in the semi-vulcanization component, and the molding temperature of the semi-vulcanization component is lower than that of the template group.
By adopting the technical scheme, the cooling component independently cools the semi-vulcanizing component, so that the temperature control of the area where the semi-vulcanizing component is located can be accurately realized, the vulcanizing area can be accurately controlled, and after the mold is used for a long time, the area where the semi-vulcanizing section is located can still keep proper temperature, so that the molding length of the sealing strip is stably controlled, and the quality control of products produced by the mold is improved.
Preferably, the semi-vulcanized assembly comprises: the vulcanizing seat is arranged on the semi-vulcanizing groove, and the template group is provided with a placing groove for placing the vulcanizing seat; and the locking part is arranged on the template group and used for clamping and fixing the vulcanizing seat on the template group, the cooling water channel is arranged on the vulcanizing seat, and the cooling assembly is connected with the vulcanizing seat.
Through adopting above-mentioned technical scheme, locking portion is fixed in the template group with the vulcanization seat centre gripping, realizes the fixed mounting of template group to accessible locking portion is dismantled the vulcanization seat, so that maintain the vulcanization seat.
Preferably, the vulcanizing seat is provided with an extending part which is arranged in a protruding manner, the end part of the semi-vulcanizing groove extends into the extending part, the template group is provided with a lap joint groove for lap joint positioning of the extending part, and the lap joint groove is communicated with the cavity.
Through adopting above-mentioned technical scheme, at the in-process with extension overlap joint to overlap joint groove, can fix a position semi-vulcanization groove and die cavity mutually to realize the accurate alignment between semi-vulcanization groove and the die cavity, because the vulcanization seat is the form structure of assembling alone, if produce the skew between semi-vulcanization groove and the die cavity, can cause the raw materials to spill over, can cause the sealing strip to scrap, the setting of extension and overlap joint groove has solved above-mentioned problem well.
Preferably, the outline size of the vulcanizing seat is smaller than that of the placing groove, and a heat insulation gap is formed between the vulcanizing seat and the template group.
By adopting the technical scheme, heat conduction can be reduced by the heat insulation gap between the vulcanizing seat and the template group, so that the vulcanizing seat can be kept in a stable temperature range in a long-term working process, and the molding stability of the sealing strip is improved.
Preferably, the locking part comprises a bidirectional screw rod, a first locking block and a second locking block, the bidirectional screw rod is rotationally connected to the template group, the first locking block and the second locking block are respectively connected to the template group in a sliding mode, the first locking block and the second locking block are respectively connected to the bidirectional screw rod in a threaded mode, the first locking block and the second locking block are located on two sides of the vulcanizing seat, locking grooves are formed in two sides of the vulcanizing seat, and the first locking block and the second locking block are matched with the locking grooves in an inserting mode.
By adopting the technical scheme, the bidirectional screw rod is started, the bidirectional screw rod can push the first locking block and the second locking block to be close to or far away from each other, and when the first locking block and the second locking block are inserted into the locking groove, the vulcanizing seat is locked and fixed, and the locking is rapid and convenient.
Preferably, wedge-shaped surfaces are respectively arranged on the first locking block and the second locking block, and the locking groove is provided with an inclined surface which is jointed with the wedge-shaped surfaces.
Through adopting above-mentioned technical scheme, at the in-process that first locking piece and second locking piece pegged graft to the locking inslot, under the mutual guide of wedge face and inclined plane, can exert the pressure towards template group department to the vulcanization seat, be difficult for not hard up when making the vulcanization seat installation, the structure is practical.
Preferably, the vulcanizing seat is provided with a positioning lug, the template group is provided with a positioning groove which is in plug-in fit with the positioning lug, and the heat insulation gap extends to the vicinity of the positioning lug so as to separate the bottom of the vulcanizing seat from the template group.
By adopting the technical scheme, on one hand, the plug-in cooperation between the positioning convex blocks and the positioning grooves can enable the vulcanizing seat and the template group to be positioned mutually, and the vulcanizing seat can be positioned accurately when being placed in the positioning grooves, so that the quick assembly is facilitated; on the other hand, the positioning convex blocks can also lift the vulcanizing seat, so that the heat insulation gap extends to the bottom of the vulcanizing seat, the heat insulation area is increased, and the temperature control effect of the vulcanizing seat is further improved.
Preferably, the cooling water channel extends into the positioning lug, and the cooling component is connected with the positioning lug and communicated with the cooling water channel in the positioning lug.
Through adopting above-mentioned technical scheme, the mould structure is less, and water course mouth mounted position is difficult to set up relatively, extends the cooling water course to in the location lug this moment, and the location lug can extend the cooling water course to the position department that is close to the mould outside to be connected cooling module and cooling water course, the structure is ingenious and practical, has solved the difficult problem of cooling water course installation.
Preferably, the heat insulation gap is filled with a heat insulation filling layer, and the heat insulation filling layer is provided with a porous structure.
Through adopting with above-mentioned technical scheme, the heat preservation filling layer can play further thermal effect of isolation, and the porous structure that is located the heat preservation filling layer simultaneously can keep heat in the heat preservation filling layer well, and the heat of transferring to the heat preservation filling layer obtains further isolation, and the temperature control ability of vulcanization seat obtains further promotion.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cooling component can cool the semi-vulcanized component independently, so that the temperature control of the area where the semi-vulcanized component is positioned can be realized accurately, the vulcanized area can be controlled accurately, the area where the semi-vulcanized section is positioned can still keep proper temperature after the mold is used for a long time, the molding length of the sealing strip is controlled stably, and the quality control of the product is improved;
2. the heat insulation gap and the heat insulation filling filled in the heat insulation gap can reduce the heat of the template group diffused to the vulcanizing seat so as to maintain the vulcanizing seat in a stable temperature range in a long-term working process;
3. the extension parts hung with each other and the overlap joint groove can align the semi-vulcanization groove with the cavity, so that the defect that sizing materials overflow to produce defective products can be overcome.
Drawings
Fig. 1 is a schematic structural view of a related art loop forming mold.
Fig. 2 is a schematic structural view of a molding die for a contact ring in embodiment 1 of the present application.
FIG. 3 is a schematic diagram showing the assembly relationship of the lower die plate and the semi-vulcanized assembly in example 1 of the present application.
Fig. 4 is a cross-sectional view of the lower die plate and the semi-vulcanized assembly in example 1 of the present application.
Fig. 5 is an enlarged view of a portion a in fig. 3.
Fig. 6 is an enlarged view of a portion B in fig. 4.
Fig. 7 is an enlarged view of a portion C in fig. 3.
Fig. 8 is a cross-sectional view of the vulcanizing boiler in example 1 of the present application.
Fig. 9 is a schematic structural view of a loop forming mold in embodiment 2 of the present application.
Fig. 10 is a schematic structural view of a loop forming mold in embodiment 3 of the present application.
Reference numerals illustrate:
1. a template group; 101. an upper template; 102. a lower template; 2. a forming groove; 3. a cavity; 4. a water cooling device; 5. a semi-curing assembly; 51. a vulcanization seat; 511. a semi-vulcanization tank; 512. positioning the protruding blocks; 513. an extension; 514. a locking groove; 52. a locking part; 521. a two-way screw rod; 522. a first locking block; 523. a second locking block; 524. a ratchet wheel; 525. a pawl; 526. a coil spring; 6. a cooling assembly; 61. a water inlet pipe; 62. a water outlet pipe; 63. a mold temperature machine; 7. a placement groove; 8. a positioning groove; 9. a lap joint groove; 10. a heat preservation filling layer; 11. a thermal insulation gap; 12. an inclined surface; 13. a wedge surface; 14. a cooling water channel; 15. a receiving groove; 16. a spring; 17. and a cover plate.
Detailed Description
Referring to fig. 1, there is a loop forming mold, including a mold plate group 1, where the mold plate group 1 includes an upper mold plate 101 and a lower mold plate 102, the upper mold plate 101 and the lower mold plate 102 are all in a U-shaped configuration, forming grooves 2 with U-shaped contours are respectively formed on the upper mold plate 101 and the lower mold plate 102 from outside to inside in a concave manner, the upper mold plate 101 and the lower mold plate 102 can overlap each other, when the upper mold plate 101 and the lower mold plate 102 are overlapped with each other, the forming grooves 2 at the upper mold plate 101 and the forming grooves 2 at the lower mold plate 102 are mutually spliced to form a strip-shaped cavity 3, two ends of the cavity 3 are respectively opened at the side edges of the mold plate group 1, and the upper mold plate 101 and the lower mold plate 102 are heated by using heating elements, so that raw materials can be vulcanized.
In the process of producing the sealing ring, firstly, raw materials can be placed in a forming groove 2; then, closing the upper template 101 and the lower template 102, heating the raw materials for a period of time to vulcanize and mold the sealing strips, so that the sealing strips are reciprocated to form a plurality of sealing strips, then, putting any two sealing strips into the cavity 3 at the same time, butting the ends, covering the upper template 101 on the lower template 102 again, so that the two sealing strips are connected, butting the sealing strips in sequence, namely, molding the sealing rings, and molding products with proper sizes according to the specific required length of the sealing rings; in addition, the quantity of the forming grooves 2 can be multiple, the multiple forming grooves 2 are distributed at intervals on the upper template 101 and the lower template 102, the inner diameters of different forming grooves 2 can be set to be different sizes, so that sealing strips with different inner diameters can be formed, and the production requirements of sealing ring products with different wire diameters and inner diameters are met.
In this process, if the ends of the rubber strip are vulcanized completely, it is difficult to connect the two sealing strips, and therefore, it is necessary to perform semi-vulcanization treatment on the ends of the sealing strips in the process of producing the sealing strips, and therefore, the water cooling devices 4 are respectively provided at the upper die plate 101 and the lower die plate 102, the water cooling devices 4 are close to two ends of the cavity 3, in the process of molding the sealing strips, the water cooling devices 4 can form a low temperature region, a high temperature region and a transition region on the die plate set 1, the transition region can mold the part of the sealing strips which is not vulcanized completely, and is defined as semi-vulcanization, but in the process of working the die for a long time, the area division of the transition region is not obvious, and the molding quality and the molding length of the sealing strips are difficult to control in molding.
The application is described in further detail below with reference to fig. 1-9.
The embodiment 1 of the application discloses a sealing ring joint ring forming die structure which is used for overcoming the defect that a vulcanization area is difficult to control.
Referring to fig. 2, the mold structure includes a mold plate set 1, the mold plate set 1 includes an upper mold plate 101 and a lower mold plate 102, the structures of the upper mold plate 101 and the lower mold plate 102 are not repeated, a plurality of molding grooves 2 are respectively formed in the upper mold plate 101 and the lower mold plate 102, and when the upper mold plate 101 and the lower mold plate 102 are overlapped, the two molding grooves 2 are mutually spliced to form a strip-shaped cavity 3; at this time, the mold plate group 1 is provided with a plurality of strip-shaped mold cavities 3, two ends of the molding groove 2 are respectively opened at the side edges of the upper mold plate 101 or the lower mold plate 102, so that two ends of the mold cavities 3 are respectively opened at the mold plate group 1, when two sealing strips are placed in the molding groove 2, the ends of the two sealing strips are mutually butted, and the other ends of the sealing strips can extend to the outside of the mold plate group 1 through the opening of the mold cavities 3, so that the two sealing strips are placed.
In addition, the cavity 3 can be used for placing at least two sealing strips, and a plurality of sealing strips, such as three sealing strips, four sealing strips and the like, can be placed in the cavity 3 according to actual demands, when more than two sealing strips are placed, the ends of the sealing strips positioned in the middle are required to be respectively butted with the ends of the sealing strips on two sides, the specific placing quantity of the sealing strips is not limited, and the specific quantity of the sealing strips can be adjusted according to the actual demands.
In addition, referring to fig. 3, in the process of forming the sealing strips, a cover plate 17 can be fixedly installed at the lower die plate 102 through screws, the port of the cavity 3 is covered by the cover plate 17, so that the possibility of melt overflow of the raw material strips is reduced, and when the two sealing strips are butted, the cover plate 17 can be detached, so that the sealing strips can be placed conveniently.
Referring to fig. 3 and 4, in the process of separately producing the sealing strip, in order to achieve accurate control of the vulcanization area, the structure further includes a semi-vulcanization component 5 and a cooling component 6 connected with the semi-vulcanization component 5, the semi-vulcanization component 5 is disposed on the mold plate set 1, wherein the semi-vulcanization component 5 is disposed in four groups in this embodiment, two groups of semi-vulcanization components 5 are disposed at the upper mold plate 101, the other two groups of semi-vulcanization components 5 are disposed at the lower mold plate 102, the semi-vulcanization components 5 are respectively disposed at two ends of the cavity 3, the cooling component 6 is used for cooling the semi-vulcanization components 5, so that the molding temperature of the semi-vulcanization components 5 is lower than that of the mold plate set 1, at this time, raw materials are placed on the mold plate set 1 while spanning the semi-vulcanization components 5, the cooling component 6 controls the temperature of the semi-vulcanization components 5, the raw materials disposed on the semi-vulcanization components 5 can be semi-vulcanized, the semi-vulcanization components 5 cool specific positions on the mold plate set 1, and further control specific molding positions of the sealing strip.
Referring to fig. 4 and 5, specifically, the semi-vulcanizing assembly 5 includes a vulcanizing seat 51, in this embodiment, the vulcanizing seat 51 is set in a cuboid shape, the setting grooves 7 for setting the vulcanizing seat 51 are provided on the template group 1, in this embodiment, the setting number of the setting grooves 7 is adapted to the setting number of the semi-vulcanizing assembly 5, the setting grooves 7 are respectively set at corresponding positions of the upper template 101 and the lower template 102 from outside to inside, and the setting grooves 7 are cut off from the middle part of the forming groove 2, at this time, the forming groove 2 is communicated with the setting grooves 7, the vulcanizing seat 51 is set in the setting grooves 7, and the upper template 101 and the lower template 102 support the vulcanizing seat 51 at this time.
Further, in order to improve the position accuracy of the vulcanizing seat 51 when placed, the vulcanizing seat 51 is provided with a positioning bump 512; the positioning protruding blocks 512 are arranged in a cylindrical shape in the embodiment, one end of the positioning protruding block 512 is integrally connected with the vulcanizing seat 51, meanwhile, in the embodiment, the number of the positioning protruding blocks 512 is two, and the two positioning protruding blocks 512 are diagonally arranged on the vulcanizing seat 51; meanwhile, the template group 1 is provided with the positioning grooves 8, the positioning grooves 8 are specifically arranged at the bottom of the placing grooves 7 from outside to inside in a recessed manner, the specific arrangement quantity and arrangement positions of the positioning grooves 8 are matched with the arrangement quantity and arrangement positions of the positioning convex blocks 512, the positioning convex blocks 512 are matched with the positioning grooves 8 in a plugging manner, the positioning convex blocks 512 play a role in placing and positioning the vulcanizing seat 51, and quick setting in the installation process of the vulcanizing seat 51 can be realized.
Referring to fig. 5, the semi-vulcanizing assembly 5 has a semi-vulcanizing tank 511 in communication with the cavity 3, and specifically, the semi-vulcanizing tank 511 is concavely disposed on the vulcanizing seat 51 from outside to inside, and the semi-vulcanizing tank 511 is long and straight; meanwhile, the vulcanizing seat 51 is integrally connected with an extending part 513 which is arranged in a protruding manner, the extending part 513 is arranged in a semi-cylindrical shape in the embodiment, the end part of the semi-vulcanizing tank 511 is arranged in the extending part 513, the semi-vulcanizing tank 511 is opened at the position of the end surface of the extending part 513, and the cross section shapes of the semi-vulcanizing tank 511 and the forming tank 2 are consistent; when the vulcanizing shoe 51 is placed on the upper die plate 101 and the lower die plate 102, the half vulcanizing tank 511 is adjacent to the molding tank 2, and the half vulcanizing tank 511 is abutted against the molding tank 2, and at this time, the raw material bar can be placed in the molding tank 2 and the half vulcanizing tank 511, so that the raw material bar can cross the cavity 3 and the half vulcanizing tank 511, and when the upper die plate 101 and the lower die plate 102 are closed, the raw material bar in the cavity 3 and the half vulcanizing tank 511 can be vulcanized at the same time.
Further, since the outer edge of the sealing strip has uniformity requirement, if the connection position of the semi-vulcanizing tank 511 and the molding tank 2 is shifted, the sealing strip is shifted, which affects the molding quality of the product; based on the above, the form board group 1 is provided with a lapping groove 9 for lapping and positioning the extension part 513, the lapping groove 9 is concavely arranged at the edge position of the placing groove 7 from outside to inside, the shape of the lapping groove 9 is matched with the end surface contour of the extension part 513, and at the moment, the lapping groove 9 is communicated with the position of the cavity 3 disconnected at the placing groove 7; the extension 513 is embedded into the lapping groove 9, so that the precise butt joint between the molding groove 2 and the semi-vulcanization groove 511 is realized under the bearing of the lapping groove 9, and the connection position offset degree of the semi-vulcanization groove 511 and the molding groove 2 is reduced.
It should be noted that, the number of the semi-vulcanizing grooves 511 and the number of the extending portions 513 on the vulcanizing seat 51 should be adapted to the number of the forming grooves 2, which is not described herein, and meanwhile, the plurality of extending portions 513 are respectively disposed on opposite sides of the vulcanizing seat 51 and symmetrically disposed, two ends of the semi-vulcanizing groove 511 extend into the corresponding extending portions 513 on the opposite sides, and two ends of the semi-vulcanizing groove 511 are respectively communicated with the forming grooves 2 on two sides of the placing groove 7.
Here, the heat in the upper die plate 101 and the lower die plate 102 can be transferred to the vulcanizing seat 51 through the extension 513, and the vulcanizing seat 51 is locally heated, thereby realizing the semi-vulcanizing treatment of the raw material strip.
With continued reference to fig. 4 and 5, during the semi-vulcanization process, the temperature of the vulcanizing seat 51 needs to be lower than the temperatures of the upper mold plate 101 and the lower mold plate 102 to form a temperature difference, in order to keep the temperature difference between the vulcanizing seat 51 and the mold plate set 1 within a proper range, the outline size of the vulcanizing seat 51 is set smaller than the outline size of the placement groove 7, so that a heat insulation gap 11 is formed between the vulcanizing seat 51 and the mold plate set 1, and at the same time, under the support of the positioning bump 512, the bottom of the vulcanizing seat 51 and the mold plate set 1 can be separated, so that the heat insulation gap 11 extends to the periphery side and the bottom of the vulcanizing seat 51, that is, the heat insulation gap 11 extends to the vicinity of the positioning bump 512, so that the heat conduction area between the vulcanizing seat 51 and the mold plate set 1 is reduced, and further, the temperature control is more convenient.
Further, the heat insulation gap 11 is filled with the heat insulation filling layer 10, the heat insulation filling layer 10 can be made of heat insulation materials with high temperature resistance, for example, nano microporous heat insulation materials can be adopted, and at the moment, the heat insulation filling layer 10 is internally provided with a porous structure, so that heat conduction is reduced under long-term working, and the temperature of the vulcanizing seat 51 is not easy to be unbalanced.
After the vulcanizing seat 51 is placed on the upper template 101 and the lower template 102, the upper template 101 and the lower template 102 need to be opened and closed for a plurality of times, and the vulcanizing seat 51 can be impacted reciprocally in the process, so that the vulcanizing seat 51 is loose, the alignment is uneven, and the forming of the sealing strip is defective.
With continued reference to fig. 4 and fig. 5, in order to improve the installation stability of the vulcanizing seat 51, the semi-vulcanizing assembly 5 further includes a locking portion 52 disposed on the template set 1, and the locking portion 52 is used for clamping and fixing the vulcanizing seat 51 on the template set 1, where the specific number of the locking portions 52 is consistent with the number of the vulcanizing seats 51, and the locking portions 52 are respectively disposed in the plurality of placement grooves 7 correspondingly, which is not described herein.
The locking part 52 comprises a bidirectional screw rod 521, a first locking block 522 and a second locking block 523, wherein the bidirectional screw rod 521 is rotatably connected to the upper template 101 or the lower template 102, specifically, a bearing seat can be installed at the upper template 101 or the lower template 102, and two ends of the bidirectional screw rod 521 are respectively rotatably borne on the bearing seat; at this time, the bidirectional screw rod 521 passes through the gap between the two positioning protruding blocks 512, and is accommodated by using the bottom space of the vulcanizing seat 51, so that the structure is compact.
In addition, the first locking block 522 and the second locking block 523 are slidably connected to the form set 1, and specifically, a T-shaped slider may be disposed on the first locking block 522, and a T-shaped chute may be disposed at the upper form 101 or the lower form 102, and the T-shaped slider may be slidably disposed in the T-shaped chute, so as to realize sliding installation. Meanwhile, threaded holes are respectively formed in the first locking block 522 and the second locking block 523 in a penetrating manner, the bidirectional screw rod 521 penetrates through the first locking block 522 and the second locking block 523 through the threaded holes, the first locking block 522 and the second locking block 523 are respectively connected with two threaded sections of the bidirectional screw rod 521 in opposite threaded directions in a threaded manner, and the first locking block 522 and the second locking block 523 can be driven to be close to or far from each other by rotating the bidirectional screw rod 521.
Meanwhile, referring to fig. 5 and 6, the first locking block 522 and the second locking block 523 are respectively close to opposite sides of the vulcanizing seat 51, and the side walls of the two sides of the vulcanizing seat 51 are respectively provided with locking grooves 514 in a recessed manner from outside to inside, and the locking grooves 514 are provided with inclined surfaces 12; in addition, the first locking block 522 and the second locking block 523 are respectively provided with a wedge surface 13, the wedge surface 13 can be attached to the inclined surface 12, the first locking block 522 and the second locking block 523 are respectively opposite to the locking groove 514, the first locking block 522 and the second locking block 523 can be in plug-in fit with the locking groove 514 in the process of mutually approaching the first locking block 522 and the second locking block 523, and in the process of inserting, under the mutual guidance of the wedge surface 13 and the inclined surface 12, pressure towards the template group 1 can be applied to the vulcanizing seat 51, so that the vulcanizing seat 51 is not easy to loosen in the process of installing.
Referring to fig. 7, in the actual use process, the bi-directional screw 521 may be loosened, in order to improve the locking stability of the locking portion 52, the locking portion 52 further includes a ratchet 524, a pawl 525 and a coil spring 526, the ratchet 524 is fixedly mounted on the bi-directional screw 521, the pawl 525 is rotatably mounted on the upper or lower die plate 101 or 102 through a rotation shaft, the inner end of the coil spring 526 is fixedly connected with the rotation shaft of the pawl 525, the outer end of the coil spring 526 is fixed with the upper or lower die plate 101 or 102, the coil spring 526 applies a torsion force to the pawl 525, and when the coil spring 526 is in a natural state, the pawl 525 is engaged with the ratchet 524 to achieve locking of the bi-directional screw 521, and stability of the locking portion 52 when locked is further improved.
Referring back to fig. 4, to enhance the temperature control capability of the semi-vulcanizing assembly 5, the cooling assembly 6 includes a mold temperature machine 63, a water inlet pipe 61 and a water outlet pipe 62, wherein the water inlet pipe 61 and the water outlet pipe 62 are fixedly connected with the vulcanizing seat 51 respectively, and in addition, the mold temperature machine 63 is connected with the other end of the water inlet pipe 61 and the other end of the water outlet pipe 62 respectively; the semi-vulcanizing assembly 5 is provided with a cooling water channel 14, specifically, the cooling water channel 14 is arranged in the vulcanizing seat 51, two ends of the cooling water channel 14 respectively extend to two positioning convex blocks 512 and are opened at the end faces of the positioning convex blocks 512, through holes are respectively formed in the upper template 101 and the lower template 102 in a penetrating manner, the water inlet pipe 61 and the water outlet pipe 62 penetrate through the upper template 101 or the lower template 102 through the through holes and are finally connected with the positioning convex blocks 512 on the vulcanizing seat 51, and at the moment, the water inlet pipe 61 and the water outlet pipe 62 are respectively communicated with the cooling water channel 14.
Referring to fig. 4 in combination with fig. 8, here, the mold temperature machine 63 may conduct cooling water with a suitable temperature to be delivered to the cooling water channel 14 via the water inlet pipe 61, the cooling water cools the vulcanizing seat 51 to achieve accurate temperature control, and in order to improve the temperature control effect, the cooling water channel 14 extends in a serpentine shape in the embodiment to prolong the cooling distance, so that the cooling effect is further improved; meanwhile, when the water inlet and the water outlet of the cooling water channel 14 are arranged at the positions, the overall size of the structure is small, for example, the size of the heat insulation gap 11 is about 1cm, because the mold is a thin plate-shaped mold, the overall thickness cannot be too high, if the mold is directly arranged at the bottom or the side edge of the vulcanizing seat 51, the conditions of small installation space, large mold thickness and the like can be generated, the cooling water channel 14 is extended into the positioning protruding block 512, the positioning protruding block 512 can extend the cooling water channel 14 to the position close to the outer part of the mold, so that the cooling assembly 6 is connected with the cooling water channel 14, the problem of difficult installation of the cooling water channel 14 is solved, and meanwhile, the manufacturing cost of the mold is also saved.
Further, the cooling water channel 14 extending in a serpentine shape has a straight line segment extending in the same direction as the half-vulcanizing tank 511, and the cooling water channel 14 is arranged so as to cool the raw material strip on the half-vulcanizing tank 511 along the longitudinal direction of the half-vulcanizing tank 511, thereby improving the cooling effect.
In addition, in the process of setting the snakelike cooling water channel 14 in the vulcanization seat 51, can adopt the form of processing respectively with vulcanization seat 51 separately two halves, set up the snakelike groove respectively on two block assembly, finally carry out the mutual amalgamation with two block assembly and fix, realize the shaping of vulcanization seat 51, in this process, the form of adopting two block assembly to splice probably can make the gap between the two, thereby lead to the cooling water to spill over, here, can set up a layer of sealing member between the block assembly for shutoff the clearance between the two, the structural tightness is ensured, simultaneously, in this scheme, heat preservation filling layer 10 is because of the parcel is in the outside of vulcanization seat 51, the heat preservation filling layer can also shutoff to the gap, unexpected sealed effect has been reached, the leakproofness of structure is further ensured.
The implementation principle of the sealing ring connecting ring forming die structure of the embodiment 1 of the application is as follows: the cooling assembly 6 conveys cooling water to the cooling water channel 14 in the vulcanizing seat 51, so as to control the temperature of the vulcanizing seat 51, in the process, heat at the upper die plate 101 and the lower die plate 102 is diffused into the vulcanizing seat 51 through the extending part 513, so that the raw material strip is precisely semi-vulcanized and molded, and the molding quality of the sealing strip is improved.
Example 2:
referring to fig. 9, the difference between this embodiment and embodiment 1 is that a receiving groove 15 is concavely provided at the upper die plate 101 or the lower die plate 102, a spring 16 is provided in the receiving groove 15, the spring 16 is fixedly installed at the upper die plate 101 or the lower die plate 102, when the upper die plate 101 is closed at the lower die plate 102, the spring 16 is respectively abutted against the upper die plate 101 and the lower die plate 102, at this time, under the action of the spring 16, the upper die plate 101 and the lower die plate 102 form an exhaust gap at the parting surface, at this time, in the process of forming the sealing strip, the exhaust gap can exhaust the redundant gas in the cavity 3, so as to reduce the bubble defect of the product, and the production quality of the product is further improved.
Example 3:
referring to fig. 10, the difference between the present embodiment and embodiment 1 is that the forming groove 2 of the present application removes the straight line portion, so that the raw material strip is directly formed in the arc portion, and the produced product structure omits the straight line portion, which is more advantageous for connection.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (5)
1. The sealing ring connecting ring forming die structure comprises a die plate group (1), wherein a plurality of strip-shaped cavities (3) are arranged in the die plate group (1), two ends of each strip-shaped cavity (3) are respectively opened on the die plate group (1), the strip-shaped cavities (3) are used for forming sealing strips and for placing at least two sealing strips,
the mold comprises a mold plate group (1), and is characterized by further comprising a semi-vulcanization component (5), wherein the semi-vulcanization component (5) is arranged on the mold plate group (1), the semi-vulcanization components (5) are respectively positioned at two ends of the mold cavity (3), and the semi-vulcanization component (5) is provided with a semi-vulcanization groove (511) communicated with the mold cavity (3) so as to enable raw material strips to span the mold cavity (3) and the semi-vulcanization groove (511);
a cooling assembly (6), wherein the cooling assembly (6) is connected with a cooling water channel (14) in the semi-vulcanization assembly (5), and the cooling assembly (6) enables the molding temperature of the semi-vulcanization assembly (5) to be lower than the molding temperature of the template group (1);
the semi-vulcanized assembly (5) comprises: the vulcanizing seat (51), the semi-vulcanizing groove (511) is arranged on the vulcanizing seat (51), and the template group (1) is provided with a placing groove (7) for placing the vulcanizing seat (51); the locking part (52) is arranged on the template group (1) and used for clamping and fixing the vulcanizing seat (51) on the template group (1), the cooling water channel (14) is arranged on the vulcanizing seat (51), and the cooling assembly (6) is connected with the vulcanizing seat (51);
the outline size of the vulcanizing seat (51) is smaller than that of the placing groove (7), and a heat insulation gap (11) is formed between the vulcanizing seat (51) and the template group (1);
the vulcanizing seat (51) is provided with a positioning lug (512), the template group (1) is provided with a positioning groove (8) which is in plug-in fit with the positioning lug (512), and the heat insulation gap (11) extends to the vicinity of the positioning lug (512) so as to separate the bottom of the vulcanizing seat (51) from the template group (1);
the cooling water channel (14) extends into the positioning lug (512), the cooling component (6) is connected with the positioning lug (512), and the cooling component (6) is communicated with the cooling water channel (14) positioned in the positioning lug (512).
2. The sealing ring joint forming die structure according to claim 1, wherein: the vulcanizing seat (51) is provided with an extending part (513) which is arranged in a protruding mode, the end part of the semi-vulcanizing groove (511) is arranged in the extending part (513), the template group (1) is provided with a lap joint groove (9) for lap joint positioning of the extending part (513), and the lap joint groove (9) is communicated with the cavity (3).
3. The sealing ring joint forming die structure according to claim 1, wherein: the locking part (52) comprises a bidirectional screw rod (521), a first locking block (522) and a second locking block (523), the bidirectional screw rod (521) is rotationally connected to the template group (1), the first locking block (522) and the second locking block (523) are respectively and slidably connected to the template group (1), the first locking block (522) and the second locking block (523) are respectively and threadedly connected to the bidirectional screw rod (521), the first locking block (522) and the second locking block (523) are positioned on two sides of the vulcanizing seat (51), locking grooves (514) are formed on two sides of the vulcanizing seat (51), and the first locking block (522) and the second locking block (523) are respectively in plug-in fit with the locking grooves (514).
4. A sealing ring joint ring forming die structure according to claim 3, wherein: the first locking block (522) and the second locking block (523) are respectively provided with a wedge surface (13), and the locking groove (514) is provided with an inclined surface (12) which is jointed with the wedge surface (13).
5. The sealing ring joint forming die structure according to claim 1, wherein: the heat insulation gap (11) is filled with a heat insulation filling layer (10), and a porous structure is arranged in the heat insulation filling layer (10).
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| CN202210528077.0A CN114953278B (en) | 2022-05-16 | 2022-05-16 | Sealing washer connects circle forming die structure |
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