CN109551728B - Silica gel tube forming die with side opening and forming method - Google Patents

Silica gel tube forming die with side opening and forming method Download PDF

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Publication number
CN109551728B
CN109551728B CN201710883345.XA CN201710883345A CN109551728B CN 109551728 B CN109551728 B CN 109551728B CN 201710883345 A CN201710883345 A CN 201710883345A CN 109551728 B CN109551728 B CN 109551728B
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China
Prior art keywords
core
core body
silicone tube
die
side opening
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CN201710883345.XA
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Chinese (zh)
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CN109551728A (en
Inventor
朱瀚
吴华
周道福
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Shenzhen Meimeimeichuangyi Medical Technology Co ltd
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Shenzhen Meimeimeichuangyi Medical Technology Co ltd
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Publication of CN109551728A publication Critical patent/CN109551728A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/36—Moulds having means for locating or centering cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/76—Cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/36—Moulds having means for locating or centering cores
    • B29C2045/363—Moulds having means for locating or centering cores using a movable core or core part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible

Abstract

The invention relates to the field of injection molding dies, and provides a silicone tube forming die with a side opening, which comprises a core, wherein the core comprises a first core body and a second core body which can be mutually butted, the first core body comprises a first tube core and a first side core protruding from the side wall of the first tube core, and the second core body comprises a second tube core and a second side core protruding from the side wall of the second tube core; after the first core body and the second core body are butted, the first core body and the second core body are jointed to form a core body for constructing the inner structure of the silicone tube, and the first side core body and the second side core body are jointed to form a side core body for constructing a side opening of the silicone tube. The forming die disclosed by the invention is simple in structure and convenient to operate, a plurality of core-pulling mechanisms are not required to be arranged, the core can be taken out from the side opening after the injection molding is finished, and the forming die is suitable for injection molding products with the core difficult to pull out from the two ends of the tube body.

Description

Silica gel tube forming die with side opening and forming method
Technical Field
The invention relates to the technical field of injection molding dies, in particular to a silicone tube forming die with a side opening and a forming method.
Background
Injection molding is the most common method for producing plastic and silica gel products, and has the advantages of high production speed, high efficiency, capability of forming products with complex shapes and the like. In the prior art, the injection molding method is usually adopted to produce a product with a tubular structure, and after the tubular product is subjected to injection molding, the core is usually extracted from the tail end of the pipe body. However, for products with smaller size at the tail end of the pipe body than the middle section and difficult deformation at the tail end of the pipe body, the die and the method for pulling the core from the tail end are not suitable.
In order to overcome the defects in the prior art, the invention provides a silicone tube forming die with a side opening and a forming method, which are used for solving the problem that core pulling is not easy to occur from the tail end of a tube body.
Disclosure of Invention
The invention provides a silicone tube forming die with a side opening and a forming method, which are used for solving the problem that a product is difficult to loose core from the tail end of a tube body after being formed.
The invention aims to provide a silicone tube forming die with a side opening, which comprises a core, wherein the core comprises a first core body and a second core body which can be butted with each other, the first core body comprises a first die core and a first side core protruding from the side wall of the first die core, and the second core body comprises a second die core and a second side core protruding from the side wall of the second die core; after the first core body and the second core body are butted, the first core body and the second core body are jointed to form a core body for constructing the inner structure of the silicone tube, and the first side core body and the second side core body are jointed to form a side core body for constructing a side opening of the silicone tube.
Further, when a silicone tube is formed on the core, the end of the side core is higher than the end of the side opening.
Furthermore, a first groove is arranged on the first side core body, and the position of the first groove on the first side core body is positioned on the opposite surface of the butt joint surface of the first side core body and the second side core body; and a second groove is arranged on the second side core body, and the position of the second groove on the second side core body is positioned on the opposite surface of the butt joint surface of the second side core body and the first side core body.
Further, the die also comprises a fixed die and a movable die, the fixed die is provided with a first cavity and an accommodating groove communicated with the first cavity, and the movable die is provided with a second cavity; when the fixed die and the movable die are assembled, the first cavity and the second cavity are in butt joint to form an outer tube cavity for constructing the outer structure of the silicone tube, and the accommodating groove is used for accommodating the side core body.
The fixed die further comprises a moving track extending from the containing groove to the outside of the fixed die, and the fixed die further comprises a fixing device which can extend into the containing groove from the moving track and fix the core.
Further, the fixing device comprises a clamp, the clamp comprises a first clamping arm and a second clamping arm, the distance between the first clamping arm and the second clamping arm is adjustable, and the first clamping arm and the second clamping arm can be respectively inserted into the first groove and the second groove to fix the core.
Further, the fixing device also comprises a slide block, the clamp is fixed on the slide block through the opposite end of one end of the clamping core, and the slide block can slide back and forth in the moving track to drive the clamp to move towards or away from the core.
The invention also provides a method for forming the silicone tube with the side opening, which comprises the following steps:
s1, butting the first core body and the second core body of the core, placing the core into the first cavity of the fixed die, inserting the side core body of the core into the accommodating groove, and fixing the core through the side core body;
s2, closing the movable mold and the fixed mold, injecting a liquid silica gel raw material into an external cavity formed after the closing of the molds, and cooling and solidifying;
s3, loosening the mold core, opening the mold and taking out the silicone tube formed on the mold core;
and S4, taking out the first core body and the second core body from the side opening of the silicone tube respectively to obtain the silicone tube with the side opening.
The forming die provided by the invention is simple in structure and easy to operate, a plurality of core-pulling mechanisms are not required to be arranged, the core can be taken out from the side opening after the injection molding is finished, and the forming die is suitable for injection molding products with the core difficult to pull out from the two ends of the tube body.
Drawings
FIG. 1 is a schematic view showing the structure of an injection molded product according to a first embodiment of the present invention.
Fig. 2 is a schematic view of the structure of a core in the first embodiment of the present invention.
FIG. 3 is a front sectional view of an injection-molded product and a core in the first embodiment of the present invention.
Fig. 4 is a front sectional view of the injection mold in the first embodiment of the present invention.
Fig. 5 is a front sectional view of the injection mold according to the first embodiment of the present invention after clamping.
Fig. 6 is a side sectional view of the injection mold according to the first embodiment of the present invention after clamping.
Fig. 7 is a schematic structural view of a fixing device in a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
The first embodiment of the present invention provides a silicone tube molding die having a side opening for manufacturing a silicone tube 1 having a side opening 11 as shown in fig. 1. It should be noted that the forming die of the invention is particularly suitable for manufacturing flexible tubular structure products which are not suitable for extracting cores from two ends, such as products with small openings at two ends; the pipeline of the silicone tube can be a straight pipe or an irregular bent pipe; the side opening may be an opening in the side wall of the duct or another branch duct communicating with the duct from the side wall.
As shown in fig. 2, the molding die includes a core 2, the core 2 includes a first core 21 and a second core 22 that can be butted against each other, the first core 21 includes a first core 211 and a first side core 212 protruding from a side wall of the first core 211, and the second core 22 includes a second core 221 and a second side core 222 protruding from a side wall of the second core 221; after the first core body 21 and the second core body 22 are butted, as shown in fig. 3, the first core body 211 and the second core body 221 are joined to form a core body for constructing the internal structure of the silicone tube 1, and the first side core 212 and the second side core 222 are joined to form a side core body for constructing the silicone tube side opening 11.
The inner diameter of the openings at the two ends of the silicone tube 1 in fig. 1 is smaller than the inner diameter of the interior of the silicone tube, so that after the injection molding is completed, the mold cores are not suitable to be drawn out from the two ends of the silicone tube 1. After the silicone tube is manufactured by using the molding die of the embodiment, the first core body 21 and the second core body 22 can be taken out from the side opening 11 in sequence, so that the silicone tube injection molding product is obtained.
Further, when the silicone tube 1 is formed on the core, the end of the side core is higher than the end of the side opening 11. It should be noted that the term "high" refers to the length from the connection of the side core and the die body. The mold core can be conveniently drawn out from the side opening; in addition, a fixed position may be provided for the core.
Further, a first groove 213 is disposed on the first side core 212, and a second groove 223 is disposed on the second side core 222. Compared with the solution without grooves, the first groove 213 and the second groove 223 can be used as the fixing positions of the core, thereby making it more convenient to fix the core using the jig.
Further, the position of the first groove 213 on the first side core 212 is located on the opposite side of the butt surface of the first side core 212 and the second side core 222; the position of the second groove 223 on the second side core 222 is located on the opposite side of the abutting surface of the second side core 222 and the first side core 212. The core of this scheme is at fixed in-process, the fixed position symmetry of first core and second core to make the atress even, the core is difficult for shifting.
Further, as shown in fig. 4 to 7, the mold further comprises a fixed mold 3 and a movable mold 4, the fixed mold 3 has a first cavity 31 and a receiving groove 32 communicating with the first cavity 31, and the movable mold 4 has a second cavity 41; when the fixed die 3 and the movable die 4 are closed, the first cavity 31 and the second cavity 41 are butted to form an external cavity for constructing the external structure of the silicone tube 1, and the accommodating groove 32 is used for accommodating the side core body.
Furthermore, the fixed mold 3 is also provided with a moving rail 33 extending from the accommodating groove 32 to the outside of the fixed mold, and the mold further comprises a fixing device 5, wherein the fixing device 5 can extend into the accommodating groove 32 from the moving rail 33 and fix the core. The fixing device 5 can be moved in the movement path 33 in the direction of approaching the receiving groove 32 or moving away from the receiving groove 32, so that the core 2 is fixed or released.
Further, the fixing device 5 comprises a clamp 51, the clamp 51 comprises a first clamping arm 511 and a second clamping arm 512 with adjustable intervals, and the first clamping arm 511 and the second clamping arm 512 are respectively matched with the first groove 213 and the second groove 223. The first clamping arm 511 and the second clamping arm 512 of the clamp can be respectively inserted into the first groove 213 and the second groove 223, so that the core can be effectively prevented from falling off, and the core can be more firmly fixed.
Further, the fixing device 5 further includes a slider 52, and the clamp 51 is fixed to the slider 52 through the opposite ends of the clamping ends. The clamping end refers to an end used for clamping the core. The reciprocal sliding of the slide 52 in the moving track 33 causes the gripper 51 to move towards or away from the core 2.
Further, the fixing device 5 further comprises an air cylinder 53 connected with the sliding block, and the air cylinder 53 can provide power for the movement of the sliding block 52.
The steps of manufacturing the silicone tube with the side opening by using the forming die of the embodiment are as follows: the first core body 21 and the second core body 22 of the core are butted and then placed into the first cavity 31 of the fixed die, the side core body of the core is inserted into the containing groove 32, and the core is fixed through the side core body; closing the movable mold 4 and the fixed mold 3, injecting a liquid silica gel raw material into an external cavity formed after the mold closing, and cooling and solidifying; loosening the mold core 2, opening the mold and taking out the silicone tube 1 formed on the mold core 2; the first core body 21 and the second core body 22 were taken out from the side openings of the silicone tube 1, respectively, to obtain the silicone tube 1 having the side openings.
Wherein the step of fixing the core is as follows: the slider 52 is pushed by the cylinder 53, the clamp 51 is inserted into the receiving slot 32, the first clamping arm 511 and the second clamping arm 512 are respectively clamped in the first groove and the second groove of the side core, and the distance between the first clamping arm 511 and the second clamping arm 512 is adjusted to clamp the side core.
The step of releasing the core is as follows: the distance between the first and second clamp arms 511 and 512 is adjusted to release the clamp 51 from the core 2, and the slider is pulled by the air cylinder 53 to move the clamp 51 out of the receiving slot 32.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A silicone tube forming die with a side opening comprises a core, wherein the core comprises a first core body and a second core body which can be butted with each other, the silicone tube forming die is characterized in that the first core body comprises a first tube core and a first side core protruding from the side wall of the first tube core, and the second core body comprises a second tube core and a second side core protruding from the side wall of the second tube core; after the first core body and the second core body are butted, the first core body and the second core body are jointed to form a core body for constructing the inner structure of the silicone tube, and the first side core body and the second side core body are jointed to form a side core body for constructing a side opening of the silicone tube.
2. The silicone tube molding die with a side opening according to claim 1, wherein the side core tip is higher than the side opening tip when the silicone tube is formed on the core.
3. The silicone tube molding die with the side opening according to claim 2, wherein a first groove is provided on the first side core body, and the position of the first groove on the first side core body is located on the opposite side of the butt joint surface of the first side core body and the second side core body; and a second groove is arranged on the second side core body, and the position of the second groove on the second side core body is positioned on the opposite surface of the butt joint surface of the second side core body and the first side core body.
4. The silicone tube molding die with the side opening according to claim 3, further comprising a fixed die and a movable die, wherein the fixed die has a first cavity and a receiving groove communicated with the first cavity, and the movable die has a second cavity; when the fixed die and the movable die are assembled, the first cavity and the second cavity are in butt joint to form an outer tube cavity for constructing the outer structure of the silicone tube, and the accommodating groove is used for accommodating the side core body.
5. The silicone tube molding die with the side opening according to claim 4, further comprising a moving rail extending from the receiving groove to an outside of the stationary die, and a fixing device capable of extending from inside of the moving rail into the receiving groove and fixing the core.
6. The silicone tube forming die with the side opening according to claim 5, wherein the fixing device comprises a clamp, the clamp comprises a first clamp arm and a second clamp arm with adjustable intervals, and the first clamp arm and the second clamp arm can be inserted into the first groove and the second groove respectively to fix the core.
7. The silicone tube molding die with the side opening according to claim 6, wherein the fixing device further comprises a slider, the clamp is fixed on the slider through an opposite end of one end of the clamping core, and the slider slides back and forth in the moving track to drive the clamp to move towards or away from the core.
8. A forming method of a silicone tube with a side opening is characterized by comprising the following steps:
s1, butting the first core body and the second core body of the core, placing the core into the first cavity of the fixed die, inserting the side core body of the core into the accommodating groove, and fixing the core through the side core body;
s2, closing the movable mold and the fixed mold, injecting a liquid silica gel raw material into an external cavity formed after the closing of the molds, and cooling and solidifying;
s3, loosening the mold core, opening the mold and taking out the silicone tube formed on the mold core;
and S4, taking out the first core body and the second core body from the side opening of the silicone tube respectively to obtain the silicone tube with the side opening.
CN201710883345.XA 2017-09-26 2017-09-26 Silica gel tube forming die with side opening and forming method Active CN109551728B (en)

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CN109551728B true CN109551728B (en) 2020-08-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1295004A (en) * 1961-05-24 1962-06-01 W J Stokvis Konink Fabriek Van A method of injection molding or transfer molding of a plastic object where said object is composed of a number of hollow parts, mainly cylindrical, the axes of which intersect or intersect, and the following molded composite object said process
DE3403727A1 (en) * 1984-02-03 1985-08-08 Phoenix Ag, 2100 Hamburg MOLD FOR MAKING T-SHAPED RUBBER TUBES
JPH10156959A (en) * 1996-11-29 1998-06-16 Keihin Corp Bent rubber pipe having a plurality of openings, and bent rubber
CN101830072A (en) * 2009-03-09 2010-09-15 乔治费希尔Jrg股份公司 Method and this ducted body of being used for production cannulated body
CN204222092U (en) * 2014-11-12 2015-03-25 湖州氮化硅制品有限公司 A kind of mould casting round can shaped container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1295004A (en) * 1961-05-24 1962-06-01 W J Stokvis Konink Fabriek Van A method of injection molding or transfer molding of a plastic object where said object is composed of a number of hollow parts, mainly cylindrical, the axes of which intersect or intersect, and the following molded composite object said process
DE3403727A1 (en) * 1984-02-03 1985-08-08 Phoenix Ag, 2100 Hamburg MOLD FOR MAKING T-SHAPED RUBBER TUBES
JPH10156959A (en) * 1996-11-29 1998-06-16 Keihin Corp Bent rubber pipe having a plurality of openings, and bent rubber
CN101830072A (en) * 2009-03-09 2010-09-15 乔治费希尔Jrg股份公司 Method and this ducted body of being used for production cannulated body
CN204222092U (en) * 2014-11-12 2015-03-25 湖州氮化硅制品有限公司 A kind of mould casting round can shaped container

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Address after: Longgang District of Shenzhen City, Guangdong province 518116 Longgang Street Community 6 new road bridge Baolong Baolong Industrial Park building B building 1-3 floor

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Applicant before: MEHOW INNOVATIVE Ltd.

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