CN211518219U - Rubber sleeve with teeth and vulcanizing device - Google Patents
Rubber sleeve with teeth and vulcanizing device Download PDFInfo
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- CN211518219U CN211518219U CN201822276690.XU CN201822276690U CN211518219U CN 211518219 U CN211518219 U CN 211518219U CN 201822276690 U CN201822276690 U CN 201822276690U CN 211518219 U CN211518219 U CN 211518219U
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Abstract
The utility model discloses a take tooth gum cover and vulcanizer belongs to the drive belt and vulcanizes technical field. The middle part of the inner side of the rubber sleeve with teeth of the utility model is provided with an inner tooth section, and the end part of the inner side surface of the rubber sleeve with teeth is provided with an inner smooth section; the rubber sleeve with teeth is sleeved outside the rigid inner mold. In the vulcanizing device, the end part of the inner side surface of the rubber sleeve with teeth is provided with the inner smooth section, and the peripheral side surface of the cover plate is matched with the inner smooth section of the rubber sleeve with teeth, so that the sealing effect is improved; sealed clamp suit takes the tooth gum cover outside, and sealed clamp corresponds the setting with the apron, and sealed clamp is used for sealed to apron and takes the tooth gum cover chucking, avoids gaseous because of sealed poor entering of effect between gum cover and the centre form to improve the vulcanization effect of drive belt, and then improve the vulcanization shaping quality of drive belt.
Description
The patent application of the invention is a divisional application with the application number of 2018209124003, and the application date of the original application is as follows: 2018-06-12, the name of invention creation is: belt vulcanizer with clamp seals
Technical Field
The utility model relates to a drive belt vulcanization technical field, more specifically say, relate to a take tooth gum cover and vulcanizer.
Background
V-type transmission belts have been widely used in automobiles, motorcycles, and the like as important parts in the field of mechanical transmission. The manufacturing method of the V-shaped transmission belt comprises a positive forming method and a negative forming method. The positive forming method comprises the following steps: a cylindrical steel die with teeth on the surface is selected as an inner die for forming a product, a belt parison is sleeved on the inner die, an upper rubber sleeve is sleeved outside the belt parison, then upper cover plates are arranged at two ends of the rubber sleeve for sealing, then the rubber sleeve is placed in a vulcanizing cylinder for differential pressure vulcanization, external pressure is formed outside the rubber sleeve, internal pressure is formed in the rubber sleeve inner die, rubber forms teeth due to viscous flow at high temperature and under high pressure, a cross-linking reaction is carried out to complete vulcanization, and then the rubber sleeve is lifted out, demoulded and cut to obtain a finished product transmission belt. The method for reverse forming comprises the following steps: a cylindrical steel die with a smooth surface is selected as an inner die for forming a product, a belt parison is sleeved on the inner die, a rubber sleeve is sleeved outside the belt parison, the inner side of the rubber sleeve is provided with a tooth form, then upper cover plates are installed at two ends of the rubber sleeve for sealing, then the rubber sleeve is placed in a vulcanization cylinder for differential pressure vulcanization, external pressure is formed outside the rubber sleeve, internal pressure is formed in the inner die of the rubber sleeve, rubber forms a tooth form due to viscous flow under high temperature and pressure and performs a cross-linking reaction to complete vulcanization, and after the vulcanization is completed, the rubber sleeve is lifted out, demoulded and cut to obtain a finished product transmission belt.
The vulcanizing cylinder can be divided into three layers in the production and vulcanization processes of the conveyor belt, wherein the three layers are respectively an inner mold, a molding adhesive tape and an outer layer of a framework material rope made of chemical fiber materials, and a rubber sleeve, the end parts of the rubber sleeve are respectively provided with a cover plate, and the cover plate seals the end parts of the rubber sleeve. The rubber sleeve has the following functions in the vulcanization process: firstly, under the action of the tight hoop of the rubber sleeve, the rubber layer generates tooth shapes on one surface or two surfaces; and secondly, when the pressure is applied, the sealing effect is achieved between the inner mold and the vulcanizing cylinder, so that the pressure in the vulcanizing cylinder is greater than the pressure in the rubber sleeve, and the vulcanizing reaction is completed. In the course of the vulcanization reaction of the adhesive tape, the pressure difference between the rubber sleeve and the vulcanization cylinder will directly affect the vulcanization quality of the transmission belt, and therefore if the rubber sleeve is improperly sealed, the vulcanization quality of the transmission belt will be directly affected. However, the two ends of the rubber sleeve of the existing vulcanizing device are difficult to be completely sealed, and the quality problem of products is caused by unreliable sealing. The sealing of the rubber sleeve is realized by the following modes: firstly, the height of the rubber sleeve is larger than that of the die, the cover plate is pressed on the rubber sleeve, the rubber sleeve is deformed at the contact part of the cover plate, the rubber sleeve and the cover plate are sealed through deformation, the upper end and the lower end of the rubber layer adjacent to the rubber sleeve are deformed along with the deformation due to the compression, contraction and deformation of the rubber sleeve, and the belt cut at the deformation part is a waste belt. And because the upper and lower both ends of gum cover are compressed repeatedly, warp, the sealed effect of final both ends is worsened. In particular, in the reverse molding method, the end of the rubber sleeve and the cover plate are difficult to be effectively sealed due to the inner tooth profile of the rubber sleeve, so that the vulcanization quality of the transmission belt is deteriorated.
For the process of vulcanizing adhesive tape, the prior art has related technical improvements, such as: the name of the invention is: the rubber sleeve for vulcanizing the driving belt (application No. CN 200910064967.5; application date 2009-05-21) is barrel-shaped, the upper end and the lower end of the rubber sleeve are open, and the rubber sleeve is characterized in that a circle of sealing lip edges are respectively arranged on two end faces, the sealing lip edges at the two ends of the barrel-shaped rubber sleeve form an included angle with the rubber sleeve, the length of the sealing lip edges at the two ends of the barrel-shaped rubber sleeve is larger than the thickness of the rubber sleeve, and the sections of the sealing lip edges at the two ends of the barrel-shaped rubber sleeve are gradually reduced from thickness. The section of the sealing lip edge is triangular. The technology reduces the shrinkage deformation of the rubber sleeve caused by high compression in the use process, increases the effective cutting width of the rubber layer, and increases the thickness of the section shape of the sealing lip edge gradually, so that the sealing speed of the rubber ring sleeve on the upper cover plate and the lower cover plate of the mold in the vulcanization process is accelerated, and the sealing performance is improved.
Therefore, the sealing effect in the vulcanization process of the transmission belt is urgently needed to be improved, and the vulcanization effect of the transmission belt is further improved; the vulcanization quality deterioration caused by poor sealing effect is avoided.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defect that the quality of a transmission belt is deteriorated due to poor sealing effect in the vulcanization process of the transmission belt in the prior art, and provides a rubber sleeve with teeth and a vulcanization device, wherein the end part of the inner side surface of the rubber sleeve with teeth is provided with an inner smooth section, and the peripheral side surface of a cover plate is matched with the inner smooth section of the rubber sleeve with teeth, so that the sealing effect is improved; thereby improving the vulcanization effect of the transmission belt.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
according to the rubber sleeve with teeth, the middle part of the inner side of the rubber sleeve with teeth is provided with the inner-side tooth-shaped section, and the end part of the inner side surface of the rubber sleeve with teeth is provided with the inner-side smooth section.
Preferably, the inside diameter of the inside tooth profile section is smaller than the inside diameter of the inside smooth section, the inside tooth profile section protruding inside with respect to the inside smooth section.
Preferably, a transition connecting surface is formed between the top of the inner tooth-shaped section and the inner smooth section.
Preferably, the inner smooth section cooperates with the cover plate peripheral side surface of the cover plate.
Preferably, the transitional coupling surface is also a smooth flat surface.
Preferably, the transitional coupling surface cooperates with an edge portion of the inner side of the cover plate.
Preferably, the upper and lower parts of the inner side surface of the toothed gum cover are provided with inner side smooth sections.
The belt vulcanizing device with the clamp seal is characterized in that the toothed rubber sleeve is adopted, the seal clamp is sleeved outside the toothed rubber sleeve, and the seal clamp is arranged corresponding to the cover plate.
The invention relates to a vulcanizing device, which adopts the belt vulcanizing device with the hoop seal.
The vulcanizing device with the toothed rubber sleeve is adopted.
The utility model relates to a belt vulcanizing device with a clamp seal, which comprises a rigid internal mold, a belt clamping device and a belt clamping device, wherein the rigid internal mold is used for supporting a vulcanized belt blank; the rubber sleeve with teeth is sleeved outside the rigid inner mold, and the end part of the inner side surface of the rubber sleeve with teeth is provided with an inner side smooth section; the peripheral side surface of the cover plate is matched with the smooth section of the inner side of the rubber sleeve with teeth; the sealing hoop is sleeved outside the toothed rubber sleeve and corresponds to the cover plate, and the sealing hoop is used for clamping and sealing the cover plate and the toothed rubber sleeve.
Preferably, a gas channel is arranged in the cover plate, and an air inlet hole of the gas channel is arranged on the circumferential side of the cover plate; the exhaust hole of the gas channel is arranged in the middle of the cover plate, and the gas inlet hole is communicated with the exhaust hole through the gas channel.
Preferably, the cover plate is provided at a circumferential side thereof with an annular exhaust groove provided along a circumferential direction of the circumferential side, the exhaust groove communicating with the intake port.
Preferably, the air intake hole is disposed in the exhaust groove; or/and the air inlet holes are arranged on the circumferential side of the cover plate on the circumferential side.
Preferably, the distance between the air inlet hole and the inner side surface of the cover plate is D1Then D is1Is greater than 0, and the distance between the air inlet and the outer side surface of the cover plate is D2Then D is2＞0。
Preferably, the sectional area of the groove bottom of the exhaust groove is larger than the sectional area of the groove notch.
Preferably, the distance between the bottom of the sealing clip and the outer side of the cover plate is d1Then D is2＞d1。
Preferably, the sealing band is disposed to correspond to an outer circumferential side of the cover plate.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following apparent effect:
(1) the utility model discloses a take tooth gum cover and vulcanizer, take the lower part of tooth gum cover to hug closely with lower cover plate to make upper cover plate and take the inboard smooth section seal of tooth gum cover upper portion, lower cover plate and take the inboard smooth section seal of tooth gum cover lower part; thereby achieving the sealing effect.
(2) The utility model discloses a belt vulcanizer with clamp seal, including the rigidity centre form, take the tooth gum cover, apron and sealed clamp, the rigidity centre form is used for supporting the drive belt base, the tip that takes the tooth gum cover medial surface is provided with inboard smooth section, apron week side cooperates with the inboard smooth section that takes the tooth gum cover, this sealed clamp suit takes the tooth gum cover outside, and sealed clamp corresponds the setting with the apron, sealed clamp is used for to apron and take the tooth gum cover chucking to seal, thereby improve belt vulcanizer's sealed effect, and then improve the vulcanization shaping quality of drive belt;
(3) the utility model relates to a belt vulcanizing device with a clamp seal, a gas channel is arranged in a cover plate, and an air inlet of the gas channel is arranged on the circumferential side of the cover plate; the exhaust hole of the gas channel is arranged in the middle of the cover plate, the gas inlet hole is communicated with the exhaust hole through the gas channel, and gas leaked from the circumferential side of the cover plate enters the gas channel through the gas inlet hole in the vulcanization process, so that the gas is prevented from entering between the rubber sleeve and the inner mold due to poor sealing effect, the pressure difference in the belt blank forming process of the transmission belt is ensured, and the vulcanization effect of the transmission belt is improved;
(4) the utility model discloses a belt vulcanizer with clamp seal, the circumference of apron is seted up annular exhaust groove, and this exhaust groove sets up along the circumferencial direction of week side, and exhaust groove is linked together with the inlet port, and when the gas of apron circumference arbitrary position was in the tooth gum cover by apron edge infiltration, the steam of infiltration all can get into gas passage through exhaust groove, and discharge to the rigidity centre form by gas passage;
(5) the utility model discloses a belt vulcanizer with clamp is sealed, apron week side forms to be sealed for vertical direction with inboard smooth section, and the edge of apron medial surface is sealed for the horizontal direction with what transition connection face formed for the strip base holds and forms a lot of sealedly between the chamber and the apron outside, and the contained angle between the horizontal direction is sealed and vertical direction is 90, thereby has improved sealed effect.
Drawings
Fig. 1 is a schematic structural view of a belt vulcanizing device with a band seal according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the toothed rubber sleeve of the present invention;
FIG. 3 is a schematic cross-sectional view of the rubber cover with teeth of the present invention;
FIG. 4 is an enlarged schematic view of a gas channel in a cover plate according to embodiment 1 of the present invention;
fig. 5 is an enlarged schematic structural view of embodiment 2 of the present invention;
fig. 6 is a bottom view of the cover plate according to embodiment 2 of the present invention;
fig. 7 is a plan view of a cover plate according to embodiment 2 of the present invention;
fig. 8 is a schematic diagram illustrating the position marking of the exhaust grooves according to embodiment 2 of the present invention;
fig. 9 is an enlarged schematic structural view of embodiment 3 of the present invention;
fig. 10 is a schematic structural view of a cover plate according to embodiment 3 of the present invention;
fig. 11 is a schematic structural view of embodiment 4 of the present invention;
fig. 12 is an enlarged schematic structural view of embodiment 4 of the present invention;
fig. 13 is a schematic structural view of embodiment 5 of the present invention;
fig. 14 is a plan view of embodiment 5 of the present invention.
The reference numerals in the schematic drawings illustrate:
101. an air inlet; 102. a gas channel; 103. an exhaust hole; 104. a groove; 105. an exhaust groove; 1051. the bottom of the groove; 1052. a trench notch; 106. a peripheral side surface of the cover plate; 1061. a peripheral side surface; 1062. an inner peripheral side surface; 107. the inner side surface of the cover plate; 108. the outer side surface of the cover plate; 109. a cover plate bump; 110. an upper cover plate; 120. a lower cover plate; 130. sealing the clamp;
210. a rigid inner mold; 211. the inside of the mould; 220. a rubber sleeve with teeth; 221. the outer side of the rubber sleeve; 222. an inner profile section; 223. an inner smooth section; 224. a transitional connecting surface; 230. a bottom support plate; 240. an internal air pressure control tube; 250. a strip receiving cavity;
300. a belt blank of the transmission belt.
Detailed Description
The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to provide the best mode contemplated for carrying out the invention and to enable any person skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.
The detailed description and exemplary embodiments of the invention may be better understood when read in conjunction with the following drawings, where the elements and features of the invention are identified by reference numerals.
Example 1
With reference to fig. 1, 2, 3 and 4, the belt vulcanizing device with a band seal of the present invention comprises a rigid inner mold 210, a rubber sleeve with teeth 220, a cover plate and a sealing band 130, wherein the rigid inner mold 210 is used for supporting a belt blank 300 of a transmission belt, the rigid inner mold 210 is configured in a cylindrical roller shape, the rigid inner mold 210 is configured in a smooth shape, so as to prepare the transmission belt by a reverse forming method; the toothed rubber sleeve 220 is sleeved outside the rigid inner mold 210, the toothed rubber sleeve 220 is an outer mold of a product, an inner side tooth section 222 is arranged in the middle of the inner side surface of the toothed rubber sleeve 220, and the tooth shape and the structure of the inner side tooth section 222 can be designed according to the requirement of reverse molding. The lower portion of the rigid inner mold 210 is connected to an inner air pressure control pipe 240, the inner air pressure control pipe 240 penetrates through the cover plate (as shown in fig. 4), and the inner air pressure control pipe 240 is connected to a pressure pump for regulating the air pressure of the rigid inner mold 210. The cover plate includes the discharge holes 103 of the upper cover plate 110 and the lower cover plate 120 facing the mold interior 211, i.e., the discharge holes 103 of the upper cover plate 110 and the lower cover plate 120 communicate with the mold interior 211.
The sealing clamp 130 of the utility model is sleeved outside the rubber cover 220 with teeth, and the sealing clamp 130 is arranged corresponding to the cover plate, the sealing clamp 130 is sleeved outside the rubber cover 220 with teeth, namely the sealing clamp 130 is arranged outside the circumference of the rubber cover 220 with teeth; and the sealing clips 130 are disposed at corresponding positions of the upper cover plate 110 and the lower cover plate 120. And the sealing clamp 130 is used for clamping and sealing the cover plate and the rubber sleeve 220 with teeth by applying clamping force to the rubber sleeve 220 with teeth, so that the sealing effect of the belt vulcanizing device is improved, and the vulcanization molding quality of the transmission belt is improved.
A gas channel 102 is arranged in the cover plate, and an air inlet 101 of the gas channel 102 is arranged on the circumferential side of the cover plate; the exhaust hole 103 of the gas channel 102 is arranged in the middle of the cover plate, the gas inlet hole 101 is communicated with the exhaust hole 103 through the gas channel 102, and the exhaust hole 103 is communicated with the mold interior 211. One gas channel 102 may be provided in the cover plate, or a plurality of gas channels 102 may be provided. The air intake holes 101 are provided on the circumferential side of the cover plate circumferential side 106.
The distance between the air inlet hole 101 and the inner side surface 107 of the cover plate is D1Then D is1Is greater than 0, and the distance between the air inlet hole 101 and the outer side surface 108 of the cover plate is D2Then D is2> 0 (as shown in FIG. 4); namely, the air inlet hole 101 is not directly communicated with the inner side surface 107 of the cover plate, and a certain thickness is kept between the air inlet hole 101 and the inner side surface 107 of the cover plate; and the air inlet holes 101 are not directly communicated with the cover plate outer side surface 108, so that a certain thickness is maintained between the air inlet holes 101 and the cover plate outer side surface 108.
The end of the inner side of the toothed rubber sleeve 220 is provided with an inner smooth section 223, that is, the inner smooth sections 223 are arranged on the upper part and the lower part of the inner side of the toothed rubber sleeve 220, and the inner smooth sections 223 are matched with the peripheral side 106 of the cover plate, that is, the inner diameter of the inner smooth sections 223 is substantially the same as the outer diameter of the peripheral side 106 of the cover plate, so that the peripheral side 106 of the cover plate can be conveniently assembled on the inner smooth sections 223 of the toothed rubber sleeve 220. The middle part of the inner side of the toothed rubber sleeve 220 is provided with an inner side tooth profile section 222, and the height of the inner side tooth profile section 222 is the same as that of the rigid inner mold 210 (as shown in fig. 2 and 3).
In the vulcanization molding process of the belt blank 300, because the pressure of the vulcanizing tank is greater than the pressure in the belt-toothed rubber sleeve 220, the belt-toothed rubber sleeve 220 applies pressure to the belt blank 300 through the pressure difference between the vulcanizing tank and the belt-toothed rubber sleeve 220, and the belt blank 300 is extruded and molded by the belt-toothed rubber sleeve 220. Therefore, the pressure difference between the vulcanizing tank and the toothed rubber sleeve 220 directly determines the vulcanization quality of the belt blank 300, and the toothed rubber sleeve 220 forms a sealed space by the cover plates at the two ends, that is, the toothed rubber sleeve 220, the upper cover plate 110 and the lower cover plate 120 together form a pressure space of the toothed rubber sleeve 220; at this time, the sealing effect of the cover plate and the rubber sleeve with teeth 220 will directly affect the pressure difference between the vulcanizing tank and the rigid inner mold 210; namely, the cover plate and the rubber sleeve with teeth 220 directly influence the vulcanization quality of the belt blank 300; the upper cover plate 110 is mounted on the upper portion of the toothed gum cover 220 such that the cover plate peripheral side 106 of the upper cover plate 110 is sealed with the inner smooth section 223 of the upper portion of the toothed gum cover 220, and similarly the lower cover plate 120 is mounted on the lower portion of the toothed gum cover 220. In the vulcanization process, because the vulcanizing tank is larger than the pressure in the toothed rubber sleeve 220, under the action of the pressure in the vulcanizing tank, the toothed rubber sleeve 220 applies pressure to the inner side, in particular, the upper part of the toothed rubber sleeve 220 is clung to the upper cover plate 110, and similarly, the lower part of the toothed rubber sleeve 220 is clung to the lower cover plate 120, so that the upper cover plate 110 is sealed with the inner side smooth section 223 of the upper part of the toothed rubber sleeve 220, and the lower cover plate 120 is sealed with the inner side smooth section 223 of the lower part of the toothed rubber sleeve 220; thereby achieving the sealing effect.
Because the atmospheric pressure is greater than the pressure in the rubber sleeve 220 with the tooth in the vulcanizing tank, under the effect of the pressure in the vulcanizing tank, although the inboard smooth section 223 of the rubber sleeve 220 with the tooth seals with the apron week side 106 under the effect of the atmospheric pressure in the vulcanizing tank, there is certain gap inevitably between the inboard smooth section 223 and the apron week side 106, and the atmospheric pressure in the vulcanizing tank is great, steam in the vulcanizing tank can infiltrate into the driving belt strip blank 300 along the gap between the inboard smooth section 223 and the apron week side 106, make the vulcanization molding quality of driving belt strip blank 300 seriously reduce, its reason may be as follows:
firstly, steam permeates into the toothed rubber sleeve 220, so that the steam is mixed in the belt blank 300 of the transmission belt, and the belt blank 300 of the transmission belt is easy to generate bubbles and delamination, thereby reducing the quality and the product rate of products;
secondly, the steam permeating into the belt-shaped rubber sleeve 220 increases the pressure at the position of the belt blank 300, reduces the pressure difference between the vulcanizing tank and the belt blank 300, reduces the extrusion pressure in the molding process and reduces the molding quality of the belt blank 300.
The reason for this is that: during vulcanization, the upper cover plate 110 is in direct contact with the top of the belt strip 300 and the lower cover plate 120 is in contact with the bottom of the belt strip 300. Because the transmission belt blank 300 is viscous fluid in a viscous state at a high temperature, the top of the viscous transmission belt blank 300 is in contact with the upper cover plate 110, the bottom of the viscous transmission belt blank 300 is in contact with the lower cover plate 120, and a space between the toothed rubber sleeve 220 and the rigid inner mold 210 (i.e., a space of an installation position of the transmission belt blank 300) is isolated from a space in the rigid inner mold 210; and the permeated steam is stopped between the toothed rubber sleeve 220 and the rigid inner die 210, so that the pressure at the position of the belt blank 300 is increased, the extrusion pressure in the forming process is further reduced, and the forming quality of the belt blank 300 is reduced.
To avoid the penetration of steam into the above-mentioned problems, the person skilled in the art often increases the sealing effect by various means, such as: adding a sealing gasket, or coating the sealing gasket, or improving the sealing pressure through a clamp; although the above-mentioned method improves the sealing effect, it is difficult to ensure an absolute sealing effect, and it is inevitable that steam penetrates into the belt blank 300 between the toothed gum cover 220 and the rigid inner mold 210. Therefore, although the vulcanization quality can be improved to some extent by improving the sealing effect, it is difficult to fundamentally improve the vulcanization quality.
Therefore, the inventor of the present application has a great understanding, and after a great deal of research, the inventor creatively proposes: a gas channel 102 is arranged in the cover plate, and an air inlet 101 of the gas channel 102 is arranged on the circumferential side of the cover plate; when steam permeates through the joint of the cover plate and the toothed rubber sleeve 220, the steam can enter the gas channel 102 through the gas inlet hole 101 and enter the inner space of the rigid inner die 210 through the gas outlet hole 103, so that the steam is prevented from permeating into the space of the belt blank 300 of the transmission belt, and the forming quality is improved. The applicant of the utility model discloses a for having broken prior art technical bias, in order to avoid steam infiltration, do not improve various sealed effects, but the creative proposal is through seting up inlet port 101 in the circumference side of apron for the steam of infiltration gets into gas passage 102 through inlet port 101, and emits into the inner space of rigidity centre form 210 by gas passage 102, thereby has guaranteed the forming pressure of drive belt base 300, thereby has improved the shaping quality of drive belt base 300. The utility model discloses the technical bias of prior art has been broken to gain unexpected technological effect. In order to achieve better effect, the present embodiment may open a plurality of air inlet holes 101 on the circumferential side, so that the permeated steam can better enter the gas channel 102 from the air inlet holes 101 and be discharged.
In the vulcanizing method of the embodiment using the above-mentioned transmission belt vulcanizing device,
step one, a transmission belt blank 300 is arranged between a rigid inner mold 210 and a rubber sleeve 220 with teeth, cover plates are arranged at two ends of the rubber sleeve 220 with teeth to form a vulcanizing device, a gas channel 102 is arranged in each cover plate, and an air inlet 101 of each gas channel 102 is arranged on the circumferential side of each cover plate;
secondly, placing the vulcanizing device in a vulcanizing tank for vulcanization, filling steam into the vulcanizing device through a first steam pipeline, and regulating and controlling the air pressure in the vulcanizing device through the first steam pipeline; and (3) filling steam into the vulcanizing tank through a second steam pipeline, regulating and controlling the air pressure in the vulcanizing tank through the second steam pipeline, allowing the gas leaked from the edge of the cover plate to enter the vulcanizing device through the gas channel 102 in the vulcanizing process, applying pressure to the transmission belt blank 300 by the toothed rubber sleeve 220 under the action of the air pressure difference, performing crosslinking reaction, and vulcanizing the transmission belt blank 300 into a belt blank with longitudinal racks on the outer surface.
The specific description is as follows: firstly, sticking a trademark on the surface of a smooth cylindrical rigid inner die 210; sleeving a transmission belt blank 300 on the rigid inner mold 210, wherein the transmission belt blank 300 sequentially comprises top cloth, top glue, buffer glue, a core rope, buffer glue, bottom glue and base cloth; mounting the toothed rubber sleeve 220 on the lower cover plate 120, so that the lower part of the toothed rubber sleeve 220 is tightly attached to the lower cover plate 120, and the lower cover plate 120 is sealed with the inner side smooth section 223 of the lower part of the toothed rubber sleeve 220; then the rubber sleeve 220 with teeth and the lower cover plate 120 are put on the bottom supporting plate 230 in the vulcanizing tank, then the belt blank 300 of the transmission belt and the rigid inner mold 210 are installed in the rubber sleeve 220 with teeth, and the upper cover plate 110 is covered on the upper part of the rubber sleeve 220 with teeth, so that the upper cover plate 110 is sealed with the smooth section 223 on the inner side of the upper part of the rubber sleeve 220 with teeth; covering a cover of the vulcanizing tank, sequentially opening external pressure according to the designed program, time and pressure, adjusting the pressure to be more than 0.85MPa, opening the internal pressure after the set time is reached, controlling the internal pressure to be 0.4MPa, tightly attaching and extruding the belt blank 300 of the transmission belt under the action of the external pressure by the rubber sleeve with teeth 220, shaping the outer surface of the belt blank 300 of the transmission belt, simultaneously carrying out crosslinking reaction under the action of high temperature and high pressure steam, and vulcanizing the belt blank 300 to complete the belt blank cylinder with the outer surface provided with the longitudinal racks. The belt blank 300 after vulcanization is removed from the rigid inner mold 210, and the belt blank 300 is cut into a molded belt having a predetermined width on a cutter according to the specifications of the product.
Example 2
The basic contents of this embodiment are the same as embodiment 1, except that: the cover plate is provided with an annular exhaust groove 105 (as shown in fig. 5-8) at the circumferential side, the exhaust groove 105 is arranged along the circumferential direction of the circumferential side, and the exhaust groove 105 is connected with the air inlet hole 101Opening; the intake hole 101 is disposed in the exhaust groove 105 such that the intake hole 101 communicates with the exhaust groove 105. At the same time, the distance D between the exhaust groove 105 and the inner side 107 of the cover plate3，D3The distance between the exhaust groove 105 and the outer side surface 108 of the cover plate is D larger than 04，D4> 0 (as shown in figure 8). And the intake hole 101 is provided at the center of the exhaust groove 105.
In order to reach better effect, avoid the gas in the vulcanizing tank by apron and the junction infiltration of taking tooth gum cover 220, the utility model discloses annular exhaust groove 105 can also be seted up to the circumference side of apron, this exhaust groove 105 sets up along the circumferencial direction of week side, exhaust groove 105 is linked together with inlet port 101, thereby when making steam infiltrate by the circumference side optional position of apron, steam all must pass through exhaust groove 105, make steam pass through exhaust groove 105 and get into inlet port 101, and emit into the inner space to rigidity centre form 210 through gas passage 102, thereby further assurance drive belt strip base 300's forming pressure, thereby improved drive belt strip base 300's shaping quality. At this time, one air intake hole 101 is provided, that is, of course, a plurality of air intake holes may be provided.
In the vulcanizing method of the transmission belt vulcanizing device of the embodiment, the rubber sleeve 220 with teeth is sleeved outside the belt blank 300 of the transmission belt, then the cover plates are installed at two ends of the rubber sleeve 220 with teeth, and the vulcanizing device is sealed; and then the sealed vulcanizing device is arranged on a supporting plate in a vulcanizing tank, a cover of the vulcanizing tank is covered, external pressure is sequentially opened according to the designed program, time and pressure, the pressure is adjusted to be more than 0.85MPa, internal pressure is opened after the set time is reached, the internal pressure is controlled to be 0.4MPa, the belt-shaped rubber sleeve 220 is tightly attached to and extrudes the belt blank 300 under the action of the external pressure, so that the outer surface of the belt blank 300 is shaped, and meanwhile, cross-linking reaction is carried out under the action of high-temperature and high-pressure steam, and the belt blank 300 is vulcanized to complete the belt blank cylinder with the outer surface provided with the longitudinal racks. The belt blank 300 after vulcanization is removed from the rigid inner mold 210, and the belt blank 300 is cut into a molded belt having a predetermined width on a cutter according to the specifications of the product.
Example 3
The basic content of this embodiment is different from embodiment 2 in that: the inner diameter of the inner side tooth-shaped section 222 is smaller than the inner diameter of the inner side smooth section 223, so that the inner side tooth-shaped section 222 protrudes inwards relative to the inner side smooth section 223, a transition connecting surface 224 is formed between the top of the inner side tooth-shaped section 222 and the inner side smooth section 223, the transition connecting surface 224 is also a smooth plane, when the cover plate is installed on the inner side smooth section 223 of the toothed rubber sleeve 220, the cover plate peripheral side surface 106 of the cover plate is matched with the inner side smooth section 223, so that the sealing between the cover plate peripheral side surface 106 and the inner side smooth section 223 is realized, and the transition connecting surface 224 is matched with the edge part of the cover plate inner side surface 107, so that the sealing between the edge of the; and the cover plate peripheral side surface 106 and the inner side smooth section 223 are formed into a vertical direction seal, the edge of the cover plate inner side surface 107 and the transition connecting surface 224 are formed into a horizontal direction seal, so that multiple seals are formed between the strip blank accommodating cavity 250 and the cover plate outer side, and the included angle between the horizontal direction seal and the vertical direction seal is 90 degrees, thereby improving the sealing effect (as shown in fig. 9).
In particular, during the high-temperature vulcanization process, the belt blank 300 being vulcanized forms a viscous fluid, and the rubber jacket outer side 221 of the toothed rubber jacket 220 has a relatively high pressure, and when the rubber jacket outer side has a relatively high pressure, the inner toothed segment 222 of the toothed rubber jacket 220 applies a pressure to the viscous fluid, and the belt blank 300 in a flowing state flows along the boundary between the edge portion of the cover inner side surface 107 and the transition joint surface 224 under the extrusion of the inner toothed segment 222. Because the pressure difference between the inner mold and the vulcanizing tank is large, the belt blank 300 in a flowing state can flow in the cover plate in the extruding process; if no measures are taken, the viscous belt blank 300 may flow to the air intake holes 101 under the pressing force, or even block the air intake holes 101. Since the toothed belt sleeve 220 presses the belt blank 300 with a relatively high pressure and the air inlet holes 101 communicate with the interior of the rigid inner mold 210, the pressure is relatively low at this point, so that the flowing belt blank 300 flows to the position of the air inlet holes 101.
The apron week side 106 of this embodiment forms to be sealed for vertical direction with inboard smooth section 223, and what the edge of apron medial surface 107 and transition connection face 224 formed is sealed for the horizontal direction, make the strip blank hold form between chamber 250 and the apron outside sealed many times, and the contained angle between the sealed and vertical direction of horizontal direction is 90, make thick drive belt strip 300 need overcome the pressure of a plurality of directions when flowing to inlet hole 101 direction, thereby avoid thick drive belt strip 300 that the form is flowing to the position of inlet hole 101.
Meanwhile, it is worth explaining that the distance between the air inlet hole 101 and the inner side surface 107 of the cover plate is D1The distance between the air inlet hole 101 and the outer side 108 of the cover plate is D2Then D is1＝1.0～1.5D2(ii) a I.e. D1＝1.2D2The distance between the exhaust groove 105 and the inner side surface 107 of the cover plate is D3The distance between the exhaust grooves 105 and the cover plate outer side surface 108 is D4，D3＝1.2D4. It should be noted that the air intake holes 101 of the present embodiment are disposed in the exhaust groove 105, and the sectional area of the groove bottom 1051 of the exhaust groove 105 is larger than the sectional area of the groove notch 1052; that is, the opening degree of the exhaust groove 105 gradually decreases from the groove notch 1052 (as shown in fig. 9 and 10), the cross section of the exhaust groove 105 of the present embodiment is dovetail-shaped, and the opening degree of the groove notch 1052 of the exhaust groove 105 is 0.5 to 20mm, preferably 2mm in the present embodiment. Thereby increasing the contact area of the cover plate peripheral side surface 106 with the inner smooth section 223 of the toothed gum cover 220 and thus increasing the sealing distance and sealing effect.
The opening degree of the exhaust groove 105 is gradually reduced due to the groove bottoms 1051 to the groove notches 1052; the opening degree of the groove notch 1052 is small, so that the situation that the contact position of the inner smooth section 223 and the groove notch 1052 is deformed to generate a gap at the groove notch 1052 by the large air pressure of the toothed rubber sleeve 220 is avoided. This is because, if the vent grooves 105 are flat grooves as shown in the grooves of fig. 2, when the air pressure is applied to the circumferential side 106 of the lid plate due to the large air pressure in the vulcanizing tank, the inner smooth section 223 is liable to be depressed at the groove notch 1052 due to the excessive pressing force, and a gap is liable to be formed between the inner smooth section 223 and the groove notch 1052 of the vent grooves 105 by the pressing deformation, which results in deterioration of the sealing effect.
Example 4
As shown in fig. 11 and 12, the basic contents of the present embodiment are different from those of embodiment 1 in that: a cover plate convex block 109 is arranged on one side of the cover plate close to the inner side surface 107 of the cover plate, and the cover plate convex block 109 and the cover plate form a groove 104; that is, the lower portion of the upper cover plate 110 is provided with a cover plate protrusion 109, the lower surface of the cover plate protrusion 109 is the cover plate inner side surface 107, while for the lower cover plate 120, the upper portion of the lower cover plate 120 is provided with a cover plate protrusion 109, and the upper surface of the cover plate protrusion 109 is the cover plate inner side surface 107; it is worth noting that: the end of the inside tooth section 222 is also provided with a smooth surface, and the end of the inside tooth section 222 is engaged with the cover projection 109, and the end of the inside tooth section 222 maintains sealing by engaging with the cover projection 109. The groove 104 may fit snugly against the end of the inside profile section 222. When the viscous belt blank 300 flows towards the air inlet hole 101, the pressure in multiple directions needs to be overcome, so that the viscous belt blank 300 flowing is prevented from flowing to the position of the air inlet hole 101. Thereby avoided thick glue to flow out the mould, and then avoided the core rope to take place not hard up in the in-process of vulcanizing, still avoided defects such as product layering, core rope and the low bonding strength of gluing, fabric and gluey layering bubble simultaneously.
Example 5
As shown in fig. 13 and 14, the basic contents of the present embodiment are different from those of embodiment 1 in that: the sealing band 130 is disposed corresponding to the outer peripheral side 1061 of the cover peripheral side 106, wherein the cover peripheral side 106 is divided by the exhaust groove 105, wherein the outer peripheral side 1061 is disposed on the side close to the cover outer side 108, and the inner peripheral side 1062 is disposed on the side close to the cover inner side 107; and the distance d between the bottom of the sealing band 130 and the outer side 108 of the cover plate1Then D is2＞d1Therefore, the sealing clamp 130 is not clamped at the position corresponding to the exhaust groove 105, and the sealing effect can be further improved. Thereby improving the sealing effect between the cover plate peripheral side surface 106 and the cover plate by the sealing band 130, and further improving the vulcanization molding of the belt blank 300And (4) quality.
The invention has been described above in detail with reference to specific exemplary embodiments. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, such as combinations between various embodiments, adapted changes and/or substitutions as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. For example, in the present invention, the term "preferably" is not exclusive, where it means "preferably, but not limited to". Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (8)
1. The rubber sleeve with teeth is characterized in that: the middle part of the inner side of the rubber sleeve (220) with teeth is provided with an inner side tooth section (222), and the end part of the inner side of the rubber sleeve (220) with teeth is provided with an inner side smooth section (223).
2. The toothed gum cover of claim 1 wherein: the inside tooth profile section (222) has an inside diameter smaller than the inside smooth section (223), and the inside tooth profile section (222) protrudes inside relative to the inside smooth section (223).
3. The toothed gum cover of claim 1 wherein: a transition connecting surface (224) is formed between the top of the inner tooth-shaped section (222) and the inner smooth section (223).
4. The toothed gum cover of claim 1 wherein: the inner smooth section (223) cooperates with the cover peripheral side (106) of the cover.
5. The toothed gum cover of claim 3 wherein: the transitional connecting surface (224) is a smooth plane.
6. The toothed gum cover of claim 3 or 5 wherein: the transition joint face (224) is fitted to an edge portion of the inner side face (107) of the cover plate.
7. The toothed gum cover of any one of claims 1-5 wherein: the upper part and the lower part of the inner side surface of the rubber sleeve (220) with teeth are provided with inner side smooth sections (223).
8. A vulcanization apparatus characterized by: the toothed rubber sleeve according to any one of claims 1 to 7 is adopted, the sealing clamp (130) is sleeved outside the toothed rubber sleeve (220), and the sealing clamp (130) is arranged corresponding to the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276690.XU CN211518219U (en) | 2018-06-12 | 2018-06-12 | Rubber sleeve with teeth and vulcanizing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276690.XU CN211518219U (en) | 2018-06-12 | 2018-06-12 | Rubber sleeve with teeth and vulcanizing device |
| CN201820912400.3U CN208468861U (en) | 2018-06-12 | 2018-06-12 | A kind of belt vulcanization plant with clip sealing |
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| CN201820912400.3U Division CN208468861U (en) | 2018-06-12 | 2018-06-12 | A kind of belt vulcanization plant with clip sealing |
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| CN211518219U true CN211518219U (en) | 2020-09-18 |
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| CN201820912400.3U Active CN208468861U (en) | 2018-06-12 | 2018-06-12 | A kind of belt vulcanization plant with clip sealing |
| CN201822276690.XU Active CN211518219U (en) | 2018-06-12 | 2018-06-12 | Rubber sleeve with teeth and vulcanizing device |
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| CN201820912400.3U Active CN208468861U (en) | 2018-06-12 | 2018-06-12 | A kind of belt vulcanization plant with clip sealing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724559A (en) * | 2018-06-12 | 2018-11-02 | 芜湖市精准传动系统研究院 | A kind of seal cover board and its driving belt vulcanization plant |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633410A (en) * | 2022-03-21 | 2022-06-17 | 芜湖市精准传动系统研究院 | Method for connecting cotton picker packing belt of vulcanization connector |
-
2018
- 2018-06-12 CN CN201820912400.3U patent/CN208468861U/en active Active
- 2018-06-12 CN CN201822276690.XU patent/CN211518219U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724559A (en) * | 2018-06-12 | 2018-11-02 | 芜湖市精准传动系统研究院 | A kind of seal cover board and its driving belt vulcanization plant |
| CN108724559B (en) * | 2018-06-12 | 2024-04-09 | 芜湖市精准传动系统研究院 | Sealing cover plate and driving belt vulcanizing device thereof |
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| Publication number | Publication date |
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| CN208468861U (en) | 2019-02-05 |
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