CN103231476B - Automobile brake chamber rubber separation film circulation forming device - Google Patents

Abstract

The invention discloses a rubber diaphragm circulation molding device for an automobile brake air chamber. The vulcanization press is used for the primary vulcanization treatment of the rubber diaphragm, and the injection vulcanization press is used for the secondary vulcanization treatment. The two presses are arranged side by side along the left and right directions. The demoulding mechanism is used for the separation operation of the pressure ring and the lower mold in the rubber diaphragm forming mold. . The invention breaks the traditional secondary vulcanization molding process. The injection machine injects the rubber material into the mold cavity, and performs vulcanization treatment while feeding the material. It has a high degree of automation, saves manpower input, high product production efficiency, stable quality, and low production cost. reduce.

Description

Automobile brake air chamber rubber diaphragm circulation molding device

technical field

The invention relates to a secondary injection vulcanization molding device for a rubber diaphragm of an automobile brake air chamber, in particular to a cycle molding device which adopts an injection vulcanization press for secondary vulcanization treatment.

Background technique

The existing automobile brake air chamber rubber diaphragm secondary vulcanization molding device has been disclosed in the Chinese patent No. 201010541774.7. In the above-mentioned document, two vacuum vulcanization presses, a demoulding mechanism, and a rubber diaphragm molding die are disclosed. One vacuum vulcanization press is used for the primary vulcanization treatment of the rubber diaphragm, the second vacuum vulcanization press is used for the secondary vulcanization treatment of the rubber diaphragm, and the demoulding mechanism is used for the separation operation of the pressure ring and the lower mold in the rubber diaphragm forming mold; There is an intermediate transmission mechanism between the press and the press and between the press and the demoulding mechanism, thus forming a transition from the first vacuum vulcanization press to the second vacuum vulcanization press to the demoulding mechanism and then to The worktable of the first vacuum vulcanization press closes the motion circuit. The forming device sets stations according to the processing procedure of the rubber diaphragm, which shortens the production cycle, facilitates continuous operation, and simplifies the production operation of the rubber diaphragm. However, the existing rubber diaphragm molding devices are all realized based on the existing processing technology, that is, the two vulcanizations are vulcanized after adding the rubber material. In order to improve the production efficiency of the rubber diaphragm, technicians carry out Continuous research to seek breakthroughs.

Contents of the invention

Aiming at the problems existing in the prior art, the object of the present invention is to provide a rubber diaphragm cycle molding device for automobile brake chambers, which breaks the traditional secondary vulcanization process on the premise that the primary vulcanization molding process of the rubber diaphragm remains unchanged. Molding process, the injection machine injects rubber into the mold cavity, without manual feeding, and automatically completes the secondary vulcanization treatment, reduces labor input, improves the production efficiency of the air chamber rubber diaphragm, and reduces production costs; and this molding The device is heated immediately while injecting the material, and the fluidity of the rubber material is good, which avoids the local deformation of the lower rubber layer of the vulcanized air chamber diaphragm caused by the mold extruding the rubber material after the second feeding in the traditional secondary vulcanization process , so that the lower rubber layer is dislocated or the thickness is uneven, and then the quality of the finished product is affected; in addition, the present invention sets the station according to the rubber diaphragm processing procedure, which shortens the production cycle of the rubber diaphragm to the greatest extent, thereby improving the utilization rate of the equipment. Further improved production efficiency.

In order to achieve the above object, the automobile brake air chamber rubber diaphragm circulation molding device of the present invention includes a vacuum vulcanization press, an injection vulcanization press, a demoulding mechanism, and a rubber diaphragm vulcanization molding die, wherein the vacuum vulcanization press is used for The primary vulcanization treatment of the rubber diaphragm, the injection vulcanization press is used for the secondary vulcanization treatment of the rubber diaphragm, and the demoulding mechanism is used for the separation operation of the pressure ring and the lower mold in the vulcanization molding mold of the rubber diaphragm; the two presses are arranged side by side along the left and right directions, In addition, the input/output directions of the worktables of the two presses are both front and rear directions, the input port of the vacuum vulcanization press and the output port of the injection vulcanization press are located at the front side, and the output port of the vacuum vulcanization press and the input port of the injection vulcanization press are located at the same On the rear side, both presses are equipped with a driving mechanism for outputting the worktable; the front and rear of the two presses are each equipped with a drive mechanism to transfer the worktable from the output port of one press to the input of the other press along the left and right directions. The intermediate transmission mechanism of the mouth, and thus form a rectangular closed motion circuit of the worktable together with the two presses; the demoulding mechanism spans above the intermediate transmission mechanism in front of the vacuum vulcanization press and the injection vulcanization press, and Separation operation is performed on the passing worktable; the lower die in the rubber diaphragm vulcanization molding mold is fixed on the worktable, the pressure ring is set on the lower die, the upper die for primary vulcanization is fixed on the head of the vacuum vulcanization press, and the second The upper mold for vulcanization is set on the head of the injection vulcanization press; the rubber diaphragm vulcanization molding mold is a complex mold structure including several sets of vulcanization molding mold units, including a lower template, a middle template, a first upper template, a second upper template template, the lower mold, pressure ring, upper mold for primary vulcanization and upper mold for secondary vulcanization in each unit are respectively arranged on the lower template, middle template, first upper template and second upper template; the injection vulcanization press is equipped with There is an injection machine, and the head of the injection vulcanization press is fixed with a flow channel plate, a heat shield plate and a second upper template in sequence from top to bottom, and the upper mold for secondary vulcanization is installed on the lower part of the second upper template. On the surface, the flow channel plate is provided with a glue inlet hole and a glue outlet hole, the glue inlet hole is connected with the glue outlet of the injection machine, and the flow channel plate is provided with a glue inlet hole and the glue outlet hole. The flow channel of the hole, the heat insulation plate, the second upper mold plate and the upper mold for secondary vulcanization are provided with a glue injection hole that penetrates up and down, the upper end of the glue injection hole is connected with the glue outlet hole, and the lower end of the glue injection hole It is located on the radial outside of the mold cavity of the upper mold for secondary vulcanization, and a communication groove is provided between the mold cavity of the second upper mold plate; the upper mold and the lower mold for secondary vulcanization are in the position of moving on the worktable. After the mold is closed, the glue inlet hole, flow channel, glue outlet hole, glue injection hole and the connection groove form a closed passage for the rubber material to enter the mold cavity, and a secondary vulcanization heating device is installed under the heat shield , the heat shield divides the passage into a cold passage above the heat shield and a hot passage below the heat shield; when the worktable is moved down to remove the mold, there is enough space under the upper mold for secondary vulcanization, In order to allow the workbench to carry the lower mold and the rubber products therein to move out laterally, and to remove the residual rubber in the hot channel.

Further, the secondary vulcanization heating device is clamped between the heat insulation board and the second upper formwork, or embedded in the heat insulation board or the second upper formwork.

Further, the flow channel plate is composed of detachable upper, middle, and lower three-layer flow channel plates closely bonded, and a flow channel groove is opened between the upper, middle, and lower layer flow channel plates, and the upper, middle, and lower layer flow channel plates are provided with flow channel grooves. When the lower flow channel plates are closely attached, the flow channel grooves form the flow channels.

Further, the axis of the glue injection hole is parallel to the axis of the upper mold for secondary vulcanization, and the glue injection hole is a tapered hole whose radial dimension gradually increases from top to bottom.

Further, the axis of the glue outlet hole is parallel to the axis of the upper mold for secondary vulcanization, and the glue outlet hole is a tapered hole whose radial dimension gradually decreases from top to bottom. The junction of the glue hole is the smallest radius in the rubber channel, and at the same time constitutes the break when the rubber in the hot channel and the cold channel are separated.

Further, the flow channel plate is cooled and lowered by circulating cooling oil.

The present invention completes the secondary vulcanization treatment of the rubber diaphragm by replacing the vacuum vulcanization press with an injection vulcanization press on the existing flow-through production device of the rubber diaphragm, and injects the rubber material into the mold cavity by an injection machine, breaking the existing process Due to the limitation that the secondary vulcanization can only be carried out after the rubber is applied, it provides a new way for the production of the air chamber rubber diaphragm, which improves the degree of automation and reduces labor input; the heat shield separates the flow channel of the rubber into a shape Cold heat and hot aisle, the rubber in the cold aisle will not be heated and vulcanized, so there is no need to clean up after each processing, only the hot aisle needs to be cleaned; since the glue injection hole is set in a tapered hole, it is easy to clean the injection hole The rubber material inside; the narrow diameter at the junction of the glue injection hole and the glue outlet hole facilitates the separation of the rupture of the rubber material in the hot aisle and the cold aisle; the arrangement of the upper runner plate and the lower runner plate is convenient for the processing of the runner plate; Locating the lower end of the glue injection hole radially outside the mold cavity of the second upper mold plate can prevent the rubber diaphragm from damaging the rubber diaphragm body as much as possible during the subsequent trimming process. In addition, the rubber diaphragm vulcanization molding mold is a compound mold structure including several sets of vulcanization molding mold units, which can process multiple rubber diaphragms at one time, and the efficiency is significantly improved.

Description of drawings

Fig. 1 is a schematic diagram of the top view state of the cycle molding device of the present invention;

Fig. 2 is the schematic diagram that the upper mold and the lower mold used for secondary vulcanization in the cycle molding device of the present invention are in the mold clamping state;

FIG. 3 is a top view of FIG. 2 .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1-3, the automobile brake air chamber rubber diaphragm circulation molding device of the present invention includes a vacuum vulcanization press 1, an injection vulcanization press 2, a demoulding mechanism 3 and a rubber diaphragm vulcanization molding die, and a rubber diaphragm vulcanization molding die It is a composite mold structure that includes 4 sets of vulcanization molding mold units, including a lower template 107, a middle template 106, a first upper template, a second upper template 105, a lower mold 109 in each unit, a pressure ring 110, and an upper mold for primary vulcanization. The mold and the upper mold 108 for secondary vulcanization are respectively arranged on the lower mold plate 107, the middle mold plate 106, the first upper mold plate and the second upper mold plate 105.

The vacuum vulcanization press 1 is used for the primary vulcanization treatment of the rubber diaphragm, and the injection vulcanization press 2 is used for the secondary vulcanization treatment of the rubber diaphragm; the two presses 1 and 2 are arranged side by side along the left and right directions, and the work of the two presses 1 and 2 The input/output directions of the platen 11 are front and rear directions, the input port of the vacuum vulcanization press 1 and the output port of the injection vulcanization press 2 are located at the front side, and the output port of the vacuum vulcanization press 1 and the input port of the injection vulcanization press 2 are located at the same rear On the side, the two presses 1 and 2 are equipped with a drive mechanism for outputting the worktable 11; the front and rear of the press are respectively provided with a drive mechanism to transfer the worktable 11 from the output port of one of the presses to the other along the left and right directions. The intermediate conveying mechanism of the input port of the press, and thus together with the two presses 1 and 2, form a rectangular closed motion circuit of a worktable.

The vacuum vulcanization press 1 belongs to the prior art and will not be repeated here; the injection vulcanization press 2 is used for the secondary vulcanization treatment of the rubber diaphragm, and the injection vulcanization press 2 is provided with an injection machine 100, and the injection vulcanization press 2 Runner plate, heat insulation plate 103, vulcanization heating plate 104 and second upper mold plate 105 are fixed sequentially on the machine head from top to bottom. Upper mold 108 for secondary vulcanization is installed on the lower surface of second upper mold plate 105. The upper surface of the plate is provided with a glue inlet hole 115 connected to the glue outlet of the injection machine 100, and the bulkhead 116 is used to strengthen the connection between the glue outlet and the glue inlet hole 115, and the glue inlet hole 115 passes through the flow channel 114 in the flow channel plate Connect the glue outlet 113 located on the lower surface of the flow channel plate. In order to facilitate the processing of the flow channel plate, the flow channel plate is composed of the upper flow channel plate 101, the middle flow channel plate 101' and the lower flow channel plate 102. The upper flow channel plate 101 , The middle flow channel plate 101' and the lower flow channel plate 102 are closely attached from top to bottom, the glue inlet hole 115 is set on the upper surface of the upper flow channel plate 101, and the glue outlet hole 113 is set on the lower surface of the lower flow channel plate 101', Runner grooves are arranged on the lower surface of the upper flow channel plate 101 and the lower surface of the middle flow channel plate 101', and the upper and lower flow channel plates 101' are provided to connect the upper flow channel plate 101 and the middle flow channel plate 101'. The connecting hole of the runner groove, the runner groove forms the runner 114 under the tight fit of the upper runner plate 101, the middle runner plate 101’ and the lower runner plate 102; the heat insulation plate 103, the vulcanization heating plate 104, the second Second, the upper mold plate 105 and the upper mold 108 for secondary vulcanization are provided with a glue injection hole 112 that penetrates up and down. The radial outer side of the cavity 111 is provided with a communication groove between the cavity 111 of the second upper template 105; after the worktable 11 is moved up so that the upper mold 108 and the lower mold 109 for secondary vulcanization are in the mold clamping state, The glue inlet 115, the flow channel 114, the glue outlet 113, the glue injection hole 112 and the connecting groove form a closed passage for the glue material to enter the mold cavity 111. The passage is separated by the heat shield 103 and is located above the heat shield 103. The cold aisle and the hot aisle located under the heat shield 103, due to the insulation effect of the heat shield, the rubber in the cold aisle is in an unvulcanized state, and the rubber will not solidify after cooling down, and the rubber in the hot aisle is In the vulcanized state, the rubber material will solidify after cooling down; when the workbench 11 moves down to remove the mold, the space below the upper mold 108 for secondary vulcanization allows the workbench 100 to carry the lower mold 109 and the rubber products therein to move out laterally and Remove residual rubber from the hot aisle.

There are many ways to set up the flow channel 114, and another form can also be used. The flow channel plate is formed by the upper flow channel plate 101, the middle flow channel plate 101' and the lower flow channel plate 102. The glue inlet hole 115 is set on the upper surface of the upper flow channel plate 101, the glue outlet hole 113 is set on the lower surface of the lower flow channel plate 102, and the upper surface of the middle flow channel plate 101' and the upper surface of the lower flow channel plate 102 are provided with flow channel grooves. , the middle runner plate 101' is provided with connecting holes for connecting the runner grooves on the middle runner plate 101' and the lower runner plate 102. The runner grooves are located on the upper runner plate 101 and the middle runner plate 101 ′ and the lower flow channel plate 102 are closely attached to form a flow channel 104 .

In addition to the split structure of the runner plate, it is also possible to use a drill bit to open the flow channel on the overall runner plate, and finally block the redundant drilling holes, so that the internal structure of the runner plate can also be formed, but compared with the split structure It is more time-consuming, and it is not conducive to the cleaning of the flow channel in the flow channel plate.

The axis of the glue injection hole 112 is parallel to the axis of the upper mold 108 for secondary vulcanization, and the glue injection hole 112 is a tapered hole whose radial dimension gradually decreases from top to bottom. This way is convenient for cleaning the vulcanized rubber in the glue injection hole, and the operator can easily pull out the residual rubber in the glue injection hole 112 .

The axis of the glue outlet hole 113 is parallel to the axis of the upper mold 108 for secondary vulcanization, and the glue outlet hole 113 is a tapered hole whose radial dimension gradually decreases from top to bottom. The junction of the glue outlet hole 113 and the glue injection hole 112 is the inner radius of the glue material channel with the smallest radius, so that when removing the residual glue in the glue injection hole 112, the glue in the glue injection hole 112 is more likely to break.

If the heat insulation capacity of the heat insulation plate 103 cannot be satisfied, the temperature of the runner plate can be lowered by circulating cooling oil.

Referring to Fig. 1, there are four conveying trolleys 4 on the closed motion circuit of the worktable 11. For the convenience of description, the four trolleys are respectively called 4A, 4B, 4C, and 4D. Among them, the output port of the vacuum vulcanization press 1 is connected to Two trolleys 4 are arranged between the input port of injection vulcanization press 2, between the output port of injection vulcanization press 2 and the input port of demoulding mechanism 3, and between the output port of demoulding mechanism 3 and the input port of vacuum vulcanizing press 1. Set up with a trolley 4.

Take one of the workbenches 11 as an example below to illustrate its operation process:

1) The trolley 4A located at the input port of the vacuum vulcanization press 1 uses its second drive mechanism to output the worktable 11 on it to the vacuum vulcanization press 1;

2) The vacuum vulcanization press 1 performs a vulcanization treatment on the rubber block and canvas in the mold on the worktable 11. After the treatment, the vacuum vulcanization press 1 uses its own driving mechanism to output the worktable 11 to its output port. on the trolley 4B;

3) The trolley 4B carries the received worktable 11 and moves to the trolley 4C located at the input port of the injection vulcanization press 2. After moving in place, the worktable 11 is output to the trolley 4C by its own second driving mechanism, and then Return to the outlet of vacuum vulcanization press 1;

4) After the injection vulcanization press 2 is turned on, the trolley 4C outputs the worktable 11 to the injection vulcanization press 2 by its second driving mechanism;

5) The injection vulcanization press 2 performs secondary vulcanization treatment on the injected rubber material in the mold on the worktable 11, and after completion, the worktable 11 is output by its own driving mechanism to the trolley 4D located at its output port;

6) The trolley 4D carries the worktable 11 and moves to the demoulding mechanism 3. After moving in place, the second driving mechanism will output the worktable 11 to the demoulding mechanism 3, and then return to the output port of the injection vulcanizing press 2 place;

7) The demoulding mechanism 3 uses the template lifting device to lift the middle template 5 away from the lower template, and the operator takes out the finished rubber diaphragm, puts new primary vulcanized rubber and canvas into the lower mold, and then reassembles the middle template 5. Put it back on the lower template, and finally the demoulding mechanism 3 outputs the worktable 11 to the trolley 4A at its output port by its own drive mechanism;

8) The trolley 4A carries the worktable 11 to the input port of the vacuum vulcanization press 1, and waits for the start of the next rubber diaphragm processing cycle.

In addition, in the above-mentioned embodiment, a total of four trolleys are set up, because the trolley at the input port of the injection vulcanization press is only used to receive the worktable from another trolley, and then transport the worktable to the injection vulcanization press , so a fixed transfer platform can also be set to replace the trolley.

Claims (6)

1. rubber diaphragm of automobile brake chamber circulation forming device, this shaped device comprises vacuum vulcanization press, injection vulcanizing press, mould emptier, diaphragm of rubber curing forming mold, wherein, vacuum vulcanization press is used for a vulcanizing treatment of diaphragm of rubber, injection vulcanizing press is used for the post-cure process of diaphragm of rubber, and mould emptier is used for the lock out operation of pressure ring and counterdie in diaphragm of rubber curing forming mold, two press are arranged side by side in left-right direction, and the working plate I/O direction of two press is fore-and-aft direction, vacuum vulcanization press input port and injection vulcanizing press delivery outlet are located on front side, vacuum vulcanization press delivery outlet and injection vulcanizing press input port are located on rear side, all with the driving mechanism exported by working plate on two press, the forward and backward side of two press is respectively provided with working plate to be sent to another press input port by one in left-right direction intermediate transport mechanism from the delivery outlet of one of them press, and jointly forms the rectangular closed moving loop of a working plate thus with two press, mould emptier across above the described intermediate transport mechanism of vacuum vulcanization press and injection vulcanizing press front, and carries out lock out operation to the working plate of process, counterdie in diaphragm of rubber curing forming mold is fixed on working plate, and pressure ring is sleeved on counterdie, and one time sulfuration patrix is fixed on vacuum vulcanization press head, and post-cure patrix is arranged on injection vulcanizing press head, described diaphragm of rubber curing forming mold is the multiple mode structure including some cover curing forming mold unit, comprise lower bolster, middle template, the first cope match-plate pattern, the second cope match-plate pattern, the counterdie in each unit, pressure ring, a sulfuration patrix and post-cure patrix are separately positioned on lower bolster, middle template, the first cope match-plate pattern and the second cope match-plate pattern, it is characterized in that, described injection vulcanizing press is equipped with injector, the head of injection vulcanizing press is fixed with runner plate from top to bottom successively, thermal insulation board and the second cope match-plate pattern, described post-cure patrix is arranged on the lower surface of described second cope match-plate pattern, described runner plate is provided with glue feeding opening and plastic hole, described glue feeding opening is connected with the gum outlet of described injector, runner plate is provided with the runner connecting glue feeding opening and described plastic hole, described thermal insulation board, the hole for injecting glue of up/down perforation is provided with in second cope match-plate pattern and post-cure patrix, described hole for injecting glue upper end is connected with described plastic hole, hole for injecting glue lower end is positioned at the radial outside of the die cavity of post-cure patrix, and and be provided with connectivity slot between the die cavity of the second cope match-plate pattern, described working plate move after making post-cure patrix and counterdie be in matched moulds state, the passage that sizing material enters the section sealing of described die cavity is formed by glue feeding opening, runner, plastic hole, hole for injecting glue and described link slot, post-cure heater is installed, the passage of heat that described channel partition is become to be positioned at the cold passage above thermal insulation board and is positioned at below thermal insulation board by thermal insulation board below thermal insulation board, when working plate moves down die sinking, below post-cure patrix, there is enough spaces, laterally shift out together with rubber wherein to allow working plate to carry counterdie, and rubber residual in the described passage of heat can be removed.

2. rubber diaphragm of automobile brake chamber circulation forming device as claimed in claim 1, it is characterized in that, described post-cure heater is clamped between described thermal insulation board and described second cope match-plate pattern, or, be embedded on thermal insulation board or the second cope match-plate pattern.

3. rubber diaphragm of automobile brake chamber circulation forming device as claimed in claim 1, it is characterized in that, described runner plate is fitted tightly by dismountable upper, middle and lower-ranking runner plate and forms, flow path groove is offered between the laminar flow guidance tape of described upper, middle and lower, when upper, middle and lower laminar flow guidance tape fits tightly, described flow path groove forms described runner.

4. rubber diaphragm of automobile brake chamber circulation forming device as claimed in claim 1, it is characterized in that, the axis of described hole for injecting glue parallels with the axis of described post-cure patrix, and hole for injecting glue is the bellmouth that radial dimension increases from the top down gradually.

5. rubber diaphragm of automobile brake chamber circulation forming device as claimed in claim 4, it is characterized in that, the axis of described plastic hole parallels with the axis of described post-cure patrix, and plastic hole is the bellmouth that radial dimension reduces from the top down gradually, the junction of plastic hole and described hole for injecting glue is that sizing material passage inside radius is minimum, forms the breaking part when passage of heat is separated with sizing material in cold passage simultaneously.

6. rubber diaphragm of automobile brake chamber circulation forming device as claimed in claim 1, it is characterized in that, described runner plate is cooled by circulation cooling oil.