CN215320115U - Vulcanization forming die of rubber corrugated diaphragm for automobile pump - Google Patents
Vulcanization forming die of rubber corrugated diaphragm for automobile pump Download PDFInfo
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- CN215320115U CN215320115U CN202121680377.8U CN202121680377U CN215320115U CN 215320115 U CN215320115 U CN 215320115U CN 202121680377 U CN202121680377 U CN 202121680377U CN 215320115 U CN215320115 U CN 215320115U
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Abstract
The utility model discloses a vulcanization forming die for a rubber corrugated diaphragm for an automobile pump, and belongs to the field of rubber vulcanization equipment. According to the vulcanization forming die, the lower die is provided with an air channel communicated with the outside; one end of the inner mold core with a hollow structure is movably connected with a floating mold core, and the other end of the inner mold core is communicated with the air channel; the middle die is provided with an accommodating cavity, and two sliding dies positioned on two sides of the inner die core are slidably arranged in the accommodating cavity; one surface of the upper die facing the middle die is provided with two guide rods in driving fit with the two sliding dies; when the lower die, the middle die and the upper die are opened, the two guide rods can respectively drive the two sliding dies to move back to the inner die core so as to separate the rubber corrugated diaphragm from the inner die core; and then positive pressure airflow can be blown into the airflow cavity through the air channel so that the rubber corrugated diaphragm is separated from the inner mold core and the floating mold core, the purpose of quick demolding is achieved, and the demolding efficiency and the product yield of the rubber corrugated diaphragm are improved.
Description
Technical Field
The utility model relates to the technical field of vulcanization forming molds, in particular to a vulcanization forming mold for a rubber corrugated diaphragm for an automobile pump.
Background
Rubber corrugated diaphragms are a core component in automotive pumps. To ensure safety, the performance requirements of rubber corrugated diaphragms are often very strict, such as good restoring, sealing and mechanical properties.
Referring to fig. 1, the rubber corrugated diaphragm to be processed according to the present invention has a relatively complex corrugated structure, such that demolding is difficult after vulcanization molding, and defects are easily generated. Such a defective rubber corrugated diaphragm, once installed for use, can have serious pump failure consequences.
In order to facilitate the demoulding of the rubber corrugated diaphragm, a pneumatic module is often used to jack the rubber corrugated diaphragm from an inner mould core in the prior art, so as to realize demoulding. For example, the chinese patent document with application number 2017213389746 discloses an automatic demoulding device for rubber corrugated covers, which comprises an upper die, a middle die, a lower die and a die core with a corrugated cover, wherein the die core is used as an inner die body of the die, the upper die and the lower die are used as outer die bodies of the die, the middle die is arranged between the inner die body and the outer die body, the upper die is provided with a rubber injection port, the middle die comprises a left die and a right die, the lower die is provided with a first slide block and a second slide block which are matched with the left die and the right die, the middle part of the die core is provided with a pneumatic piston, the piston surface of the pneumatic piston corresponds to the structure of the corrugated cover, the lower end of the pneumatic piston in the die core is provided with an air flow port, and the air flow port is led out of the die and provided with an air inlet valve.
However, the demoulding process of the rubber corrugated diaphragm is troublesome, and the rubber corrugated diaphragm is easily pulled in the demoulding process, so that the rubber corrugated diaphragm has defects.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defect of high demoulding difficulty of a rubber corrugated diaphragm after vulcanization forming in the prior art, provides a vulcanization forming die of the rubber corrugated diaphragm for an automobile pump, and aims to simplify the demoulding process of the rubber corrugated diaphragm and improve the demoulding efficiency.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the utility model is as follows:
the vulcanization forming die for the rubber corrugated diaphragm for the automobile pump comprises a lower die, a middle die, an upper die and a pressure plate, wherein a filler groove is formed in one surface, back to the middle die, of the upper die, and the pressure plate is provided with a pressure part matched with the filler groove;
an air channel communicated with the outside and an inner mold core with a hollow structure are arranged on the lower mold; one end of the inner mold core is movably connected with a floating mold core, and the other end of the inner mold core is communicated with the air channel so that the hollow structure forms an airflow cavity;
an accommodating cavity is formed in the middle die, and two sliding dies are slidably arranged in the accommodating cavity; the two sliding dies are positioned on two sides of the inner die core;
one surface of the upper die facing the middle die is provided with two guide rods in driving fit with the two sliding dies;
the vulcanization molding mold is configured to: when the lower die, the middle die and the upper die are closed, the two guide rods respectively drive the two sliding dies to move towards the inner die core so as to form a forming cavity of the rubber corrugated diaphragm between the lower die, the inner die core, the floating die core, the upper die and the two sliding dies; when the lower die, the middle die and the upper die are opened, the two guide rods respectively drive the two sliding dies to move back to the inner die core, and then positive pressure air flow is blown into the air flow cavity through the air channel so that the rubber corrugated diaphragm is separated from the inner die core and the floating die core.
Furthermore, an accommodating hole is formed in the sliding die in an inclined mode, the guide rod is arranged in an inclined mode in cooperation with the accommodating hole, and the free end of the guide rod is far away from the inner die core.
Further, the length of the guide rod is longer than that of the accommodating hole in the inclined direction.
Furthermore, when the lower die, the middle die and the upper die are in a die closing state, the free end of the guide rod extends out of the lower end surface of the sliding die; and the lower die is provided with a containing groove for containing the free end of the guide rod.
Furthermore, the lower end of the upper die is provided with a mounting groove, and the guide rod is connected in the mounting groove through the upper die insert.
Furthermore, the bottom of the filler groove is provided with a material injection hole which penetrates through the upper die.
Furthermore, two fixing bulges are arranged in the lower die, and the inner die core is fixed between the two fixing bulges; the sliding die is provided with a groove, and the groove is in limit fit with the fixed protrusion.
Further, the floating mold core is provided with a molding part for forming the molding cavity and a connecting part for connecting with the inner mold core; the size of the connecting part is smaller than that of the forming part.
Furthermore, the upper end surface of the inner mold core is provided with a mounting hole, the connecting part penetrates through the mounting hole and extends into the airflow cavity, and the forming part is supported on the upper end surface of the inner mold core; and the upper end surface of the inner mold core is provided with an airflow hole for communicating the molding cavity and the airflow cavity.
Furthermore, the free end of the connecting part is provided with an external thread, and the mounting hole is provided with an internal thread matched with the external thread.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) according to the vulcanization forming die, the lower die is provided with an air channel communicated with the outside and an inner die core with a hollow structure; one end of the inner mold core is movably connected with a floating mold core, and the other end of the inner mold core is communicated with the air channel so that the hollow structure forms an airflow cavity; an accommodating cavity is formed in the middle die, and two sliding dies are slidably arranged in the accommodating cavity; the two sliding dies are positioned on two sides of the inner die core; one surface of the upper die facing the middle die is provided with two guide rods in driving fit with the two sliding dies; according to the vulcanization forming die, when the lower die, the middle die and the upper die are opened, the two guide rods can respectively drive the two sliding dies to move back to the inner die core so as to separate the rubber corrugated diaphragm from the inner die core; and then positive pressure airflow can be blown into the airflow cavity through the air channel so that the rubber corrugated diaphragm is separated from the inner mold core and the floating mold core, the purpose of quickly demolding the rubber corrugated diaphragm is achieved, and demolding efficiency and the product yield of the rubber corrugated diaphragm are improved.
(2) According to the utility model, the accommodating holes are obliquely formed in the sliding die, the guide rods are obliquely arranged in a manner of being matched with the accommodating holes, and the free ends of the guide rods are arranged away from the inner die core, so that the two guide rods are splayed in the cross section, therefore, in the process of lifting the upper die upwards, the two guide rods synchronously pull the sliding dies on the two sides of the inner die core away from the inner die core, and the sliding dies are automatically separated from the rubber corrugated diaphragm, so that the rubber corrugated diaphragm separating device is convenient and high in efficiency.
Drawings
FIG. 1 is a schematic view of a rubber corrugated diaphragm to be processed according to the present invention;
FIG. 2 is a schematic structural view of a vulcanization forming mold of the utility model;
FIG. 3 is a schematic view of the sliding mold away from the inner mold core driven by the guide rod according to the present invention.
Detailed Description
For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
As shown in fig. 1, a rubber bellows diaphragm 500 for an automobile pump to be processed according to the present embodiment includes a cylindrical bellows portion 520, and an end portion 510 connected to one end of the bellows portion 520 and closing the end; a recess 530 is provided at a central position of the end portion 510. One connection 540 is provided at each end of the cylindrical structure of the bellows 520.
In order to improve the demolding efficiency of the rubber corrugated diaphragm 500 and thus improve the production efficiency thereof, the present embodiment provides a vulcanization molding die. Specifically, referring to fig. 2, the vulcanization mold of the present embodiment includes a lower mold 100, a middle mold 200, an upper mold 300, and a pressure plate 400, which are sequentially disposed from bottom to top. After the lower die 100, the middle die 200 and the upper die 300 are closed, a molding cavity of the rubber corrugated diaphragm 500 can be formed among the lower die 100, the middle die 200 and the upper die 300, and the pressure plate 400 can press vulcanized rubber into the molding cavity.
More specifically, the inner core 240 may be placed on the lower mold 100, and the inner core 240 may be placed on the lower mold 100, or may be detachably coupled to the lower mold 100. The inner mold core 240 may be a hollow structure, the lower mold 100 is provided with an air passage 110, and the hollow structure is used for communicating with the air passage 110 so as to conveniently blow positive pressure air flow into the hollow structure through the air passage 110, thereby jacking up the rubber corrugated diaphragm 500 and completing the separation of the rubber corrugated diaphragm 500 from the inner mold core 240 and the floating mold core 250.
The lower mold 100 may further include two fixing protrusions 230, and the inner core 240 may be fixed between the two fixing protrusions 230. Of course, the two fixing protrusions 230 may be connected to form an annular fixing protrusion ring, and the inner mold core 240 may be fixed in the fixing protrusion ring.
As a specific embodiment of the inner mold core 240, a floating mold core 250 may be movably connected to one end of the inner mold core 240, and the other end of the inner mold core 240 may communicate with the air channel 110, thereby forming an airflow chamber 241. After the lower die 100, the middle die 200 and the upper die 300 are opened, positive pressure air flow can be blown into the air flow cavity 241 through the air passage 110, and the positive pressure air flow can slightly jack up the end 510 of the rubber corrugated diaphragm 500 on one hand and can enter between the corrugated part 520 of the rubber corrugated diaphragm 500 and the inner die core 240 from the gap between the inner die core 240 and the floating die core 250 on the other hand, so that the rubber corrugated diaphragm 500 is separated from the inner die core 240.
The floating core 250 specifically includes a molding portion and a connecting portion. Wherein, the forming part of the floating mold core 250 is used for forming the forming cavity of the rubber corrugated diaphragm 500, and the connecting part of the floating mold core 250 is used for connecting with the inner mold core 240. The size of the molding part of the floating core 250 is larger than that of the connecting part of the floating core 250, so that the molding part of the floating core 250 can be placed on the inner core 240 after the connecting part of the floating core 250 passes through the upper end of the inner core 240.
As a further optimization, the upper end surface of the inner mold core 240 may be provided with a mounting hole, the connecting portion of the floating mold core 250 passes through the mounting hole and extends into the airflow cavity 241, and the forming portion is supported on the upper end surface of the inner mold core 240; the upper end surface of the inner mold core 240 is provided with an airflow hole 242 communicating the molding cavity and the airflow cavity 241. In addition, the gap between the connecting portion of the floating core 250 and the inner core 240 may also be an air flow slit through which positive pressure air flows, and the air flow slit functions as an air flow hole.
In addition, in order to facilitate the connection between the inner mold core 240 and the floating mold core 250, only the free end of the connecting part of the floating mold core 250 is provided with an external thread, and the mounting hole of the inner mold core 240 is provided with an internal thread, and the diameter of the other part of the connecting part of the floating mold core 250 except the part provided with the external thread is slightly smaller than the external diameter of the mounting hole. The floating core 250 is mounted to the inner core 240 by a threaded fit, and then continued to be screwed into the floating core 250 until the external threads disengage from the internal threads so that the floating core 250 is slidably attached to the inner core 240.
The middle mold 200 may be provided with an accommodating cavity, and the inner mold core 240 arranged on the lower mold 100 may be located in the accommodating cavity; meanwhile, two sliding dies are further disposed in the accommodating cavity, and the two sliding dies may be located at both sides of the inner core 240. The sliding die can slide toward/away from the inner core 240 within the accommodating chamber.
In addition, a groove may be further formed on the sliding die, the groove is in limit fit with the fixing protrusion 230, and the fixing protrusion 230 can limit the maximum sliding distance of the sliding die towards the inner die core 240, so as to control the gap between the sliding die and the inner die core 240, and further control the thickness and shape of the rubber corrugated diaphragm 500.
In order to facilitate the driving of the two sliding dies, two guide rods may be provided on the upper die 300. Two guide rods may be provided on the upper die 300 toward a side of the middle die 200, the two guide rods being in driving engagement with the two sliding dies, respectively. When the lower die 100, the middle die 200 and the upper die 300 are closed, the two guide rods respectively drive the two sliding dies to move towards the inner die core 240, so that a molding cavity of the rubber corrugated diaphragm 500 is formed among the lower die 100, the inner die core 240, the floating die core 250, the upper die 300 and the two sliding dies; in addition, when the lower mold 100, the middle mold 200 and the upper mold 300 are opened, the two guide rods respectively drive the two sliding molds to move away from the inner mold core 240, and then a positive pressure air flow is blown into the air flow chamber 241 through the air passage 110, so that the rubber corrugated diaphragm 500 is separated from the inner mold core 240 and the floating mold core 250.
As a specific example, referring to fig. 2, a first sliding die 210 and a second sliding die 220 may be disposed in the receiving cavity of the middle mold 200, the first sliding die 210 and the second sliding die 220 being respectively located at both sides of the inner mold core 240. The upper mold 300 is provided with a first guide 330 and a second guide 350 on a side surface facing the middle mold 200. The first guide bar 330 and the second guide bar 350 are in driving engagement with the first sliding die 210 and the second sliding die 220, respectively.
As an example of the driving method, a first receiving hole 211 may be formed in the first sliding die 210 in an inclined manner, and a second receiving hole 221 may be formed in the second sliding die 220 in an inclined manner; the first guide rod 330 is obliquely arranged along with the first receiving hole 211, and the second guide rod 350 is obliquely arranged along with the second receiving hole 221; the free ends of the first guide 330 and the second guide 350 are both disposed away from the inner mold core 240 such that the first guide 330 and the second guide 350 are splayed in cross-section. Accordingly, during the mold opening process, the upper mold 300 moves upward with respect to the middle mold 200 while the first and second guide rods 330 and 350 drive the first and second sliding molds 210 and 220 to slide away from the inner core 240, respectively.
As a further refinement, the length of the guide rod can be longer than the receiving opening in the oblique direction, i.e. in the direction in which the receiving opening opens. Further, when the lower mold 100, the middle mold 200, and the upper mold 300 are in a mold closing state, the free end of the guide rod is disposed to extend out of the lower end surface of the sliding mold; meanwhile, the lower mold 100 is provided with a receiving groove for receiving the free end of the guide bar.
For example, in the oblique direction, the length of the first guide bar 330 may be disposed longer than the first receiving hole 211, and the second guide bar 350 may be disposed longer than the second receiving hole 221. The free end of the first guide rod 330 and the free end of the second guide rod 350 are respectively provided to protrude from the lower end surface of the first sliding die 210 and the lower end surface of the second sliding die 220. The lower mold 100 further defines a first receiving groove 101 for receiving a free end of the first guide 330, and a second receiving groove 102 for receiving a free end of the second guide 350.
Therefore, referring to fig. 3, during the mold opening process, the first and second guide rods 330 and 350 start to drive the first and second sliding dies 210 and 220 to slide away from the inner core 240, and the contact areas of the first and second guide rods 330 and 350 with the first and second sliding dies 210 and 220 are maintained constant until the first and second sliding dies 210 and 220 are separated from the rubber bellows diaphragm 500. Therefore, in the above process, on the one hand, the driving force of the first guide rod 330 applied to the first sliding die 210 is fixed, and the driving force of the second guide rod 350 applied to the second sliding die 220 is fixed; on the other hand, the driving forces applied to the first sliding die 210 and the second sliding die 220 by the first guide bar 330 and the second guide bar 350 are uniform without causing torsion of the first sliding die 210 and the second sliding die 220, thereby preventing the tip of the first sliding die 210 and the tip of the second sliding die 220 from pressing and damaging the rubber bellows diaphragm 500.
As a further optimization, the lower end of the upper mold 300 may be opened with a mounting groove for mounting the guide bar. Specifically, the lower end of the upper die 300 may be formed with a first mounting groove and a second mounting groove, the first guide bar 330 may be mounted in the first mounting groove through the first upper die insert 320, and the second guide bar 350 may be mounted in the second mounting groove through the second upper die insert 340.
A packing groove is formed on the upper die 300, and the pressing plate 400 is provided with a pressing portion 410 engaged with the packing groove. Meanwhile, the bottom of the packing groove may be provided with a material injection hole 311, the material injection hole 311 may be disposed to penetrate through the upper mold 300 and communicate with the molding cavity, and the material pressing portion 410 of the material pressing plate 400 may press the vulcanized rubber material into the molding cavity from the material injection hole 311.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.
Claims (10)
1. A vulcanization forming die for a rubber corrugated diaphragm for an automobile pump comprises a lower die, a middle die, an upper die and a pressure plate, wherein a packing groove is formed in one surface of the upper die, which faces away from the middle die, and the pressure plate is provided with a pressure part matched with the packing groove; the method is characterized in that:
an air channel communicated with the outside and an inner mold core with a hollow structure are arranged on the lower mold; one end of the inner mold core is movably connected with a floating mold core, and the other end of the inner mold core is communicated with the air channel so that the hollow structure forms an airflow cavity;
an accommodating cavity is formed in the middle die, and two sliding dies are slidably arranged in the accommodating cavity; the two sliding dies are positioned on two sides of the inner die core;
one surface of the upper die facing the middle die is provided with two guide rods in driving fit with the two sliding dies;
the vulcanization molding mold is configured to: when the lower die, the middle die and the upper die are closed, the two guide rods respectively drive the two sliding dies to move towards the inner die core so as to form a forming cavity of the rubber corrugated diaphragm between the lower die, the inner die core, the floating die core, the upper die and the two sliding dies; when the lower die, the middle die and the upper die are opened, the two guide rods respectively drive the two sliding dies to move back to the inner die core, and then positive pressure air flow is blown into the air flow cavity through the air channel so that the rubber corrugated diaphragm is separated from the inner die core and the floating die core.
2. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 1, characterized in that: the sliding die is obliquely provided with a containing hole, the guide rod is matched with the containing hole and is obliquely arranged, and the free end of the guide rod is far away from the inner die core.
3. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 2, characterized in that: in the inclined direction, the length of the guide rod is longer than that of the accommodating hole.
4. The vulcanization forming die of a rubber corrugated diaphragm for an automobile pump according to claim 3, characterized in that: when the lower die, the middle die and the upper die are in a die closing state, the free end of the guide rod extends out of the lower end face of the sliding die; and the lower die is provided with a containing groove for containing the free end of the guide rod.
5. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 2, characterized in that: the lower end of the upper die is provided with a mounting groove, and the guide rod is connected in the mounting groove through the upper die insert.
6. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 1, characterized in that: and the bottom of the packing groove is provided with a material injection hole which penetrates through the upper die.
7. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 1, characterized in that: two fixing bulges are arranged in the lower die, and the inner die core is fixed between the two fixing bulges; the sliding die is provided with a groove, and the groove is in limit fit with the fixed protrusion.
8. The vulcanization forming die of the corrugated rubber diaphragm for the automobile pump according to claim 1, characterized in that: the floating mold core is provided with a molding part for forming the molding cavity and a connecting part for connecting with the inner mold core; the size of the connecting part is smaller than that of the forming part.
9. The vulcanization forming die of a rubber corrugated diaphragm for an automobile pump according to claim 8, characterized in that: the upper end surface of the inner mold core is provided with a mounting hole, the connecting part penetrates through the mounting hole and extends into the airflow cavity, and the forming part is supported on the upper end surface of the inner mold core; and the upper end surface of the inner mold core is provided with an airflow hole for communicating the molding cavity and the airflow cavity.
10. The vulcanization forming die of a rubber corrugated diaphragm for an automobile pump according to claim 9, characterized in that: the free end of the connecting part is provided with an external thread, and the mounting hole is provided with an internal thread matched with the external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121680377.8U CN215320115U (en) | 2021-07-22 | 2021-07-22 | Vulcanization forming die of rubber corrugated diaphragm for automobile pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121680377.8U CN215320115U (en) | 2021-07-22 | 2021-07-22 | Vulcanization forming die of rubber corrugated diaphragm for automobile pump |
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| Publication Number | Publication Date |
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| CN215320115U true CN215320115U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121680377.8U Active CN215320115U (en) | 2021-07-22 | 2021-07-22 | Vulcanization forming die of rubber corrugated diaphragm for automobile pump |
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| Country | Link |
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| CN (1) | CN215320115U (en) |
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- 2021-07-22 CN CN202121680377.8U patent/CN215320115U/en active Active
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