US20030218272A1 - Process for producing exterior member/seal member assembly - Google Patents
Process for producing exterior member/seal member assembly Download PDFInfo
- Publication number
- US20030218272A1 US20030218272A1 US10/392,390 US39239003A US2003218272A1 US 20030218272 A1 US20030218272 A1 US 20030218272A1 US 39239003 A US39239003 A US 39239003A US 2003218272 A1 US2003218272 A1 US 2003218272A1
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- United States
- Prior art keywords
- seal
- cavity
- slide core
- exterior
- seal member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
- B29C45/1639—Removable partitions between adjacent mould cavity portions
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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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
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- 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
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
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- 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
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
Definitions
- the present invention relates to an improvement in a process for producing an exterior member/seal member assembly comprising an exterior member made of a hard synthetic resin and a seal member made of a soft synthetic resin and coupled to one end of said exterior member, said process comprising: a first step of moving a slide core slidably mounted in a guide bore in a second die so that it protrudes into a major cavity defined between a first die and the second die, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity to form an exterior member; and a second step of retracting the slide core out of the major cavity and injecting a soft synthetic resin into a seal-member forming cavity, which is a remaining portion of the major cavity, to form a seal member.
- a process for producing an exterior member/seal member assembly comprising an exterior member made of a hard synthetic resin and a seal member made of a soft synthetic resin and coupled to one end of said exterior member, said process comprising: a first step of moving a slide core slidably mounted in a guide bore in a second die so that it protrudes into a major cavity defined between a first die and the second die, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity to form an exterior member; and a second step of retracting the slide core out of the major cavity and injecting a soft synthetic resin into a seal-member forming cavity, which is a remaining portion of the major cavity, to form a seal member, wherein an outer-seal-lip forming portion is connected to an outer end of the seal-member forming cavity to protrude toward the second die; a recess-shaped step is formed on one side face
- the exterior member corresponds to a cowl top 2 in the embodiments of the present invention, which will be described below, and the exterior-member forming cavity corresponds to a cowl-top forming cavity 12 a in the embodiments.
- the seal member having the pair of inner and outer seal lips can be formed and coupled to the exterior member by one stroke of the seal-member forming step. Further, an enhanced sealing function can be imparted to the seal member, while avoiding complication of the forming step. Moreover, the shape and size of the inner seal lip can be adjusted by changing the shape and size of the recess-shaped step of the slide core, that is, the shape and size of the inner seal lip can be changed by replacing only the slide core with a relatively low cost.
- the recess-shaped step is adapted to face the exterior-member forming cavity when the slide core is moved to protrude into the major cavity.
- joint faces of the exterior member and the seal member correspond to the shape of the recess-shaped step of the slide core, and a large joint area can be provided to contribute to an increase in bonding strength between the exterior member and the seal member.
- FIG. 1 is a perspective view of a cowl top/seal member assembly to be produced by a producing process according to a first embodiment of the present invention
- FIG. 2 is a sectional view taken along a line 2 - 2 in FIG. 1;
- FIG. 3 is a vertical sectional view of a die device used in the producing process according to the first embodiment of the present invention.
- FIG. 4 is a vertical sectional view showing a cowl-top forming step carried out in the die device
- FIG. 5 is a vertical sectional view showing a state immediately before the formation of a seal member
- FIG. 6 is a vertical sectional view showing a seal-member forming step
- FIG. 7 is a perspective view of a cowl top/seal member assembly to be produced by a producing process according to a second embodiment of the present invention.
- FIG. 8 is a vertical sectional view showing a cowl-top forming step carried out in the die device
- FIG. 9 is a vertical sectional view showing a state immediately before the formation of a seal member.
- FIG. 10 is a vertical sectional view showing a seal-member forming step.
- FIGS. 1 to 5 A first embodiment of the present invention shown in FIGS. 1 to 5 will be first described.
- FIGS. 1 and 2 show a cowl top/seal member assembly 1 which is to be produced by a producing process according to the first embodiment of the present invention.
- the cowl top/seal member assembly 1 is a part to be disposed in an area extending from an upper surface of a lower end of a windshield glass G of an automobile to a vehicle body frame F at a lower portion of a rear end of an engine bonnet H.
- the cowl top/seal member assembly 1 is comprised of a cowl top 2 made of a hard synthetic resin and secured to the vehicle body frame, and a seal member 3 made of a soft synthetic resin and coupled to a rear end of the cowl top 2 .
- the seal member 3 is integrally provided with a pair of inner and outer seal lips 4 and 5 adapted to be brought into close contact with an outer surface of the windshield glass G.
- One of the seal lips is an outer seal lip 4 protruding from an outer edge of the seal member 3 toward an inner side of the seal member 3 .
- the other seal lip is an inner seal lip 5 protruding from the inner side of the seal member 3 at a location displaced from the outer seal lip 4 toward the cowl top 2 .
- the forming device includes first and second dies 10 and 11 which are openably and closably opposed to each other.
- An inner surface 10 a of the first die 10 is provided with a shape corresponding to an outer side of the cowl/seal member assembly 1 .
- An inner surface 11 a of the second die 11 is provided with a shape corresponding to an inner side of the cowl/seal member assembly 1 .
- a slide core 14 is disposed in a guide bore 13 in the second die 11 for advancing and retracting into and out of the major cavity 12 , and adapted to divide the major cavity 12 so that a portion of the major cavity 12 can serve as a cowl-top forming cavity 12 a corresponding to the shape of the cowl top 2 .
- the slide core 14 can be moved along the guide bore 13 between an advanced position A at which its tip end face abut against the inner surface 10 a of the first die 10 , and a retracted position B at which its tip end face is flush-with the inner surface 11 a of the second die 11 .
- a portion of the major cavity 12 is partitioned to be the cowl-top forming cavity 12 a corresponding to the shape of the cowl top 2 by moving the slide core 14 into the advanced position A.
- a remaining portion of the major cavity 12 i.e., a portion other than the cowl-top forming cavity 12 a becomes a seal-member forming cavity 12 b corresponding to the shape of the seal member 3 .
- ends of the inner surfaces 10 a and 11 a are bent toward the second die 11 so that an outer-seal-lip forming portion 15 corresponding to the shape of the outer seal lip 4 of the seal member 3 is made at an outer end of the seal-member forming cavity 12 b.
- a recess-shaped step 17 is formed on a side face of the tip end of the slide core 14 adjacent the cowl-top forming cavity 12 a so that when the slide core 14 reaches the retracted position B, an inner-seal-lip forming portion 16 corresponding to the shape of the inner seal lip 5 of the seal member 3 is defined between the recess-shaped step 17 and one side face of the guide bore 13 corresponding to the recess-shaped step 17 .
- the first die 10 or the second die 11 is provided with first and second gates (not shown), from which resin materials for the cowl top 2 and the seal member 3 can be injected individually into the cowl-top forming cavity 12 a and the seal-member forming cavity 12 b.
- the first and second dies 10 and 11 are first closed, and the slide core 14 is moved into the advanced position A to define the cowl-top forming cavity 12 a by the inner surfaces 10 a and 11 a of the first and second dies 10 and 11 as well as the recess-shaped step 17 of the slide core 14 .
- a hard synthetic resin for example, PP
- a molten state is injected from the first gate (not shown) into the cowl-top forming cavity 12 a to form a cowl top 2 , as shown in FIG. 4.
- the slide core 14 is moved into the retracted position B while the first and second dies 10 and 11 are kept closed, whereby the seal-member forming cavity 12 b faced by one end of the cowl top 2 is defined between the dies 10 and 11 .
- a soft synthetic resin for example, TPO
- TPO soft synthetic resin
- the materials for the cowl top 2 and the seal member 3 have the compatibility with each other, and hence the cowl top 2 and the seal member 3 can be fused and integrally coupled to each other at joint faces.
- the joint faces of the cowl top 2 and the seal member 3 correspond to the shape of the recess-shaped step 17 of the slide core 14 , and hence a large joint area can be secured, thereby increasing the bonding strength between the cowl top 2 and the seal member 3 .
- the use of the slide core 14 having the recess-shaped step 17 ensure that the seal member 3 having the pair of inner and outer seal lips 4 and 5 can be formed and coupled to the cowl top 2 by one stroke of a seal-member forming step, and an enhanced sealing function can be imparted to the seal member 3 while avoiding complication of the forming step.
- the shape and size of the inner seal lip 5 can be adjusted by changing the shape and size of the recess-shaped step 17 of the slide core 14 , and hence the shape and size of the inner seal lip 5 can be changed by replacing only the slide core 14 with a relatively low cost.
- FIGS. 7 to 10 A second embodiment of the present invention will be described with reference to FIGS. 7 to 10 .
- a forming device in the second embodiment is similar to the forming device in the first embodiment, except that a recess-shaped step 17 is formed on a side face of a tip end of a slide core 14 adjacent the outer seal lip 4 , and an inner-seal-lip forming portion 16 is defined by the recess-shaped step 17 and an inner side face of the guide bore 13 adjacent the outer seal lip 4 . Therefore, portions or components corresponding to those in the first embodiment are designated by the same reference numerals in FIGS. 7 to 10 , and the description of them is omitted.
- the first and second dies 10 and 11 are first closed, and the slide core 14 is moved into the advanced position A to define the cowl-top forming cavity 12 a . Then, as shown in FIG. 8, a hard synthetic resin in a molten state is injected into the cowl-top forming cavity 12 a to form a cowl top 2 .
- the slide core 14 is moved into the retracted position B while the first and second dies 10 and 11 are kept closed, whereby the seal-member forming cavity 12 b faced by one end of the cowl top 2 is created.
- a soft synthetic resin in a molten state and having a compatibility with the material for the cowl top 2 is injected into the seal-member forming cavity 12 b to form a seal member 3 , as shown in FIG. 10.
- the cowl top/seal member assembly 1 is completed.
- the first and second dies 10 and 11 are opened, and the cowl top/seal member assembly 1 is removed.
- the seal member 3 having the pair of inner and outer seal lips 4 and 5 can be formed and coupled to the cowl top 2 by one stroke of a seal-member forming step, and an enhanced sealing function can be imparted to the seal member while avoiding complication of the forming step.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Body Structure For Vehicles (AREA)
- Seal Device For Vehicle (AREA)
Abstract
A process for producing an exterior member/seal member assembly includes: a first step of moving a slide core to protrude into a major cavity defined between first and second dies and, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity; and a second step of retracting the slide core and injecting a soft synthetic resin into a seal-member forming cavity which is a remaining portion of the major cavity. An outer-seal-lip forming portion is connected to an outer end of the seal-member forming cavity; a recess-shaped step is formed on one side face of the slide core and adapted to define an inner-seal-lip forming portion leading to the seal-member forming cavity between the step and an inner surface of a guide bore in the second die when the slide core is retracted; and the soft synthetic resin is filled into the outer and inner-seal-lip forming portions 15 and 16 at the second step. Thus, the seal member having the pair of inner and outer seal lips can be formed and coupled to the exterior member by one stroke of the seal-member forming step, and complication of the forming step can be avoided.
Description
- 1. Field of the Invention
- The present invention relates to an improvement in a process for producing an exterior member/seal member assembly comprising an exterior member made of a hard synthetic resin and a seal member made of a soft synthetic resin and coupled to one end of said exterior member, said process comprising: a first step of moving a slide core slidably mounted in a guide bore in a second die so that it protrudes into a major cavity defined between a first die and the second die, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity to form an exterior member; and a second step of retracting the slide core out of the major cavity and injecting a soft synthetic resin into a seal-member forming cavity, which is a remaining portion of the major cavity, to form a seal member.
- 2. Description of the Related Art
- Such process for producing an exterior member/seal member assembly is already known, for example, as disclosed in Japanese Patent Application Laid-open No. 6-143333.
- In the known process for producing the exterior member/seal member assembly, it is not taken into consideration to form a pair of seal lips on an inner surface of a seal member in order to enhance the sealing function of the seal member of the exterior member/seal member assembly.
- Accordingly, it is an object of the present invention to provide a process of the above-described type for producing an exterior member/seal member assembly, wherein a pair of seal lips can be formed easily on an inner surface of a seal member of the exterior member/seal member assembly.
- To achieve the above object, according to a first feature of the present invention, there is provided a process for producing an exterior member/seal member assembly comprising an exterior member made of a hard synthetic resin and a seal member made of a soft synthetic resin and coupled to one end of said exterior member, said process comprising: a first step of moving a slide core slidably mounted in a guide bore in a second die so that it protrudes into a major cavity defined between a first die and the second die, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity to form an exterior member; and a second step of retracting the slide core out of the major cavity and injecting a soft synthetic resin into a seal-member forming cavity, which is a remaining portion of the major cavity, to form a seal member, wherein an outer-seal-lip forming portion is connected to an outer end of the seal-member forming cavity to protrude toward the second die; a recess-shaped step is formed on one side face of the slide core and adapted to define an inner-seal-lip forming portion leading to the seal-member forming cavity between said step and an inner surface of the guide bore in the second die when the slide core is retracted; and the soft synthetic resin is filled into the outer and inner-seal-lip forming portions at the second step.
- The exterior member corresponds to a
cowl top 2 in the embodiments of the present invention, which will be described below, and the exterior-member forming cavity corresponds to a cowl-top forming cavity 12 a in the embodiments. - With the first feature, the seal member having the pair of inner and outer seal lips can be formed and coupled to the exterior member by one stroke of the seal-member forming step. Further, an enhanced sealing function can be imparted to the seal member, while avoiding complication of the forming step. Moreover, the shape and size of the inner seal lip can be adjusted by changing the shape and size of the recess-shaped step of the slide core, that is, the shape and size of the inner seal lip can be changed by replacing only the slide core with a relatively low cost.
- According to a second feature of the present invention, in addition to the first feature, the recess-shaped step is adapted to face the exterior-member forming cavity when the slide core is moved to protrude into the major cavity.
- With the second feature, joint faces of the exterior member and the seal member correspond to the shape of the recess-shaped step of the slide core, and a large joint area can be provided to contribute to an increase in bonding strength between the exterior member and the seal member.
- The above and other objects, features and advantages of the invention will become apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
- FIG. 1 is a perspective view of a cowl top/seal member assembly to be produced by a producing process according to a first embodiment of the present invention;
- FIG. 2 is a sectional view taken along a line2-2 in FIG. 1;
- FIG. 3 is a vertical sectional view of a die device used in the producing process according to the first embodiment of the present invention;
- FIG. 4 is a vertical sectional view showing a cowl-top forming step carried out in the die device;
- FIG. 5 is a vertical sectional view showing a state immediately before the formation of a seal member;
- FIG. 6 is a vertical sectional view showing a seal-member forming step;
- FIG. 7 is a perspective view of a cowl top/seal member assembly to be produced by a producing process according to a second embodiment of the present invention;
- FIG. 8 is a vertical sectional view showing a cowl-top forming step carried out in the die device;
- FIG. 9 is a vertical sectional view showing a state immediately before the formation of a seal member; and
- FIG. 10 is a vertical sectional view showing a seal-member forming step.
- The present invention will now be described by way of preferred embodiments with reference to the accompanying drawings.
- A first embodiment of the present invention shown in FIGS.1 to 5 will be first described.
- FIGS. 1 and 2 show a cowl top/seal member assembly1 which is to be produced by a producing process according to the first embodiment of the present invention. The cowl top/seal member assembly 1 is a part to be disposed in an area extending from an upper surface of a lower end of a windshield glass G of an automobile to a vehicle body frame F at a lower portion of a rear end of an engine bonnet H. The cowl top/seal member assembly 1 is comprised of a
cowl top 2 made of a hard synthetic resin and secured to the vehicle body frame, and aseal member 3 made of a soft synthetic resin and coupled to a rear end of thecowl top 2. Theseal member 3 is integrally provided with a pair of inner and outer seal lips 4 and 5 adapted to be brought into close contact with an outer surface of the windshield glass G. One of the seal lips is an outer seal lip 4 protruding from an outer edge of theseal member 3 toward an inner side of theseal member 3. The other seal lip is an inner seal lip 5 protruding from the inner side of theseal member 3 at a location displaced from the outer seal lip 4 toward thecowl top 2. - A process for producing the cowl top/seal member assembly1 will be described with reference to FIGS. 3 to 6.
- First, a die device used for producing the cowl top/seal member assembly1 will be described. As shown in FIGS. 3 and 5, the forming device includes first and
second dies 10 and 11 which are openably and closably opposed to each other. Aninner surface 10 a of thefirst die 10 is provided with a shape corresponding to an outer side of the cowl/seal member assembly 1. Aninner surface 11 a of the second die 11 is provided with a shape corresponding to an inner side of the cowl/seal member assembly 1. When both thedies 10 and 11 are closed, amajor cavity 12 corresponding to the shape of the cowl/seal member assembly 1 is defined by theinner sides - A
slide core 14 is disposed in aguide bore 13 in the second die 11 for advancing and retracting into and out of themajor cavity 12, and adapted to divide themajor cavity 12 so that a portion of themajor cavity 12 can serve as a cowl-top forming cavity 12 a corresponding to the shape of thecowl top 2. Namely, theslide core 14 can be moved along the guide bore 13 between an advanced position A at which its tip end face abut against theinner surface 10 a of thefirst die 10, and a retracted position B at which its tip end face is flush-with theinner surface 11 a of the second die 11. A portion of themajor cavity 12 is partitioned to be the cowl-top forming cavity 12 a corresponding to the shape of thecowl top 2 by moving theslide core 14 into the advanced position A. - When the
slide core 14 is moved into the retracted position B, a remaining portion of themajor cavity 12, i.e., a portion other than the cowl-top forming cavity 12 a becomes a seal-member forming cavity 12 b corresponding to the shape of theseal member 3. In this structure, ends of theinner surfaces lip forming portion 15 corresponding to the shape of the outer seal lip 4 of theseal member 3 is made at an outer end of the seal-member forming cavity 12 b. - A recess-
shaped step 17 is formed on a side face of the tip end of theslide core 14 adjacent the cowl-top forming cavity 12 a so that when theslide core 14 reaches the retracted position B, an inner-seal-lip forming portion 16 corresponding to the shape of the inner seal lip 5 of theseal member 3 is defined between the recess-shaped step 17 and one side face of the guide bore 13 corresponding to the recess-shaped step 17. - The
first die 10 or the second die 11 is provided with first and second gates (not shown), from which resin materials for thecowl top 2 and theseal member 3 can be injected individually into the cowl-top forming cavity 12 a and the seal-member forming cavity 12 b. - To produce the cowl top/seal member assembly1, as shown in FIG. 3, the first and
second dies 10 and 11 are first closed, and theslide core 14 is moved into the advanced position A to define the cowl-top forming cavity 12 a by theinner surfaces second dies 10 and 11 as well as the recess-shaped step 17 of theslide core 14. Subsequently, a hard synthetic resin (for example, PP) in a molten state is injected from the first gate (not shown) into the cowl-top forming cavity 12 a to form acowl top 2, as shown in FIG. 4. - Then, as shown in FIG. 5, the
slide core 14 is moved into the retracted position B while the first andsecond dies 10 and 11 are kept closed, whereby the seal-member forming cavity 12 b faced by one end of thecowl top 2 is defined between thedies 10 and 11. Subsequently, a soft synthetic resin (for example, TPO) in a molten state and having a compatibility with the material for thecowl top 2 is injected from the second gate (not shown) into the seal-member forming cavity 12 b to form aseal member 3, as shown in FIG. 6. Thus, the cowl top/seal member assembly 1 is completed. - Thereafter, the first and
second dies 10 and 11 are opened, and the cowl top/seal member assembly 1 is removed. - The materials for the
cowl top 2 and theseal member 3 have the compatibility with each other, and hence thecowl top 2 and theseal member 3 can be fused and integrally coupled to each other at joint faces. - Moreover, the joint faces of the
cowl top 2 and theseal member 3 correspond to the shape of the recess-shaped step 17 of theslide core 14, and hence a large joint area can be secured, thereby increasing the bonding strength between thecowl top 2 and theseal member 3. - Further, the use of the
slide core 14 having the recess-shaped step 17 ensure that theseal member 3 having the pair of inner and outer seal lips 4 and 5 can be formed and coupled to thecowl top 2 by one stroke of a seal-member forming step, and an enhanced sealing function can be imparted to theseal member 3 while avoiding complication of the forming step. - The shape and size of the inner seal lip5 can be adjusted by changing the shape and size of the recess-
shaped step 17 of theslide core 14, and hence the shape and size of the inner seal lip 5 can be changed by replacing only theslide core 14 with a relatively low cost. - A second embodiment of the present invention will be described with reference to FIGS.7 to 10.
- A forming device in the second embodiment is similar to the forming device in the first embodiment, except that a recess-
shaped step 17 is formed on a side face of a tip end of aslide core 14 adjacent the outer seal lip 4, and an inner-seal-lip forming portion 16 is defined by the recess-shaped step 17 and an inner side face of the guide bore 13 adjacent the outer seal lip 4. Therefore, portions or components corresponding to those in the first embodiment are designated by the same reference numerals in FIGS. 7 to 10, and the description of them is omitted. - Also in the second embodiment, to produce a cowl top/seal member assembly1, as shown in FIG. 7, the first and
second dies 10 and 11 are first closed, and theslide core 14 is moved into the advanced position A to define the cowl-top forming cavity 12 a. Then, as shown in FIG. 8, a hard synthetic resin in a molten state is injected into the cowl-top forming cavity 12 a to form acowl top 2. - Then, as shown in FIG. 9, the
slide core 14 is moved into the retracted position B while the first andsecond dies 10 and 11 are kept closed, whereby the seal-member forming cavity 12 b faced by one end of thecowl top 2 is created. Subsequently, a soft synthetic resin in a molten state and having a compatibility with the material for thecowl top 2 is injected into the seal-member forming cavity 12 b to form aseal member 3, as shown in FIG. 10. Thus, the cowl top/seal member assembly 1 is completed. Thereafter, the first and second dies 10 and 11 are opened, and the cowl top/seal member assembly 1 is removed. - Also in the second embodiment, the
seal member 3 having the pair of inner and outer seal lips 4 and 5 can be formed and coupled to thecowl top 2 by one stroke of a seal-member forming step, and an enhanced sealing function can be imparted to the seal member while avoiding complication of the forming step. - It will be understood that the present invention is not limited to the above-described embodiments, and various modifications in design may be made without departing from the spirit and scope of the invention defined in the claims.
Claims (3)
1. A process for producing an exterior member/seal member assembly comprising an exterior member made of a hard synthetic resin and a seal member made of a soft synthetic resin and coupled to one end of said exterior member, said process comprising:
a first step of moving a slide core slidably mounted in a guide bore in a second die so that it protrudes into a major cavity defined between a first die and the second die, and injecting a hard synthetic resin into an exterior-member forming cavity partitioned in the major cavity to form an exterior member; and
a second step of retracting the slide core out of the major cavity and injecting a soft synthetic resin into a seal-member forming cavity, which is a remaining portion of the major cavity, to form a seal member,
wherein an outer-seal-lip forming portion is connected to an outer end of the seal-member forming cavity to protrude toward the second die; a recess-shaped step is formed on one side face of the slide core and adapted to define an inner-seal-lip forming portion leading to the seal-member forming cavity between said step and an inner surface of the guide bore in the second die when the slide core is retracted; and the soft synthetic resin is filled into the outer and inner-seal-lip forming portions at the second step.
2. A process for producing an exterior member/seal member assembly according to claim 1 , wherein said recess-shaped step is adapted to face the exterior-member forming cavity when the slide core is moved to protrude into the major cavity.
3. A process for producing an exterior member/seal member assembly according to claim 1 , wherein a cowl top to be secured to a vehicle frame at a lower portion of a rear end of an engine bonnet of an automobile is formed as said exterior member at said first step, and said seal member to be coupled to a rear end of the cowl top is formed at said second step.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/400,528 US7661953B2 (en) | 2002-03-28 | 2006-04-10 | Process for producing exterior member/seal member assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002092689A JP3706840B2 (en) | 2002-03-28 | 2002-03-28 | Manufacturing method of exterior member with seal |
JP2002-92689 | 2002-03-28 |
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US11/400,528 Continuation US7661953B2 (en) | 2002-03-28 | 2006-04-10 | Process for producing exterior member/seal member assembly |
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US20030218272A1 true US20030218272A1 (en) | 2003-11-27 |
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US10/392,390 Abandoned US20030218272A1 (en) | 2002-03-28 | 2003-03-20 | Process for producing exterior member/seal member assembly |
US11/400,528 Expired - Fee Related US7661953B2 (en) | 2002-03-28 | 2006-04-10 | Process for producing exterior member/seal member assembly |
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US11/400,528 Expired - Fee Related US7661953B2 (en) | 2002-03-28 | 2006-04-10 | Process for producing exterior member/seal member assembly |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100040726A1 (en) * | 2007-03-29 | 2010-02-18 | Ube Machinery Corporation, Ltd. | Mold for in-mold coating formation |
US20110018165A1 (en) * | 2008-03-14 | 2011-01-27 | KRAUSS MAFFEI TECHNOLOGIES GmbH | In-mold molded product coating mold and in-mold molded product coating forming method |
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US20180345548A1 (en) * | 2017-06-05 | 2018-12-06 | GM Global Technology Operations LLC | Molding system and method for multiple components |
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US10987838B2 (en) * | 2016-03-31 | 2021-04-27 | Honda Motor Co., Ltd. | Injection mold, injection molding method, and molded article |
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Cited By (10)
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US20100040726A1 (en) * | 2007-03-29 | 2010-02-18 | Ube Machinery Corporation, Ltd. | Mold for in-mold coating formation |
US8047827B2 (en) * | 2007-03-29 | 2011-11-01 | Ube Machinery Corporation, Ltd. | Mold for in-mold coating formation |
US20110018165A1 (en) * | 2008-03-14 | 2011-01-27 | KRAUSS MAFFEI TECHNOLOGIES GmbH | In-mold molded product coating mold and in-mold molded product coating forming method |
US8202074B2 (en) * | 2008-03-14 | 2012-06-19 | Kraussmaffei Technologies Gmbh | In-mold molded product coating mold and in-mold molded product coating forming method |
FR2965240A1 (en) * | 2010-09-24 | 2012-03-30 | Mecaplast Sa | Canopy assembly for a vehicle |
CN103072238A (en) * | 2011-10-26 | 2013-05-01 | 日本富拉司特株式会社 | Cowl top cover and method of manufacturing the same |
US8690229B2 (en) | 2011-10-26 | 2014-04-08 | Nihon Plast Co., Ltd. | Cowl top cover and method of manufacturing the same |
US10987838B2 (en) * | 2016-03-31 | 2021-04-27 | Honda Motor Co., Ltd. | Injection mold, injection molding method, and molded article |
US20180345548A1 (en) * | 2017-06-05 | 2018-12-06 | GM Global Technology Operations LLC | Molding system and method for multiple components |
US20190126580A1 (en) * | 2017-10-31 | 2019-05-02 | Saucony, Inc. | Method and apparatus for manufacturing footwear soles |
Also Published As
Publication number | Publication date |
---|---|
US20060188603A1 (en) | 2006-08-24 |
JP3706840B2 (en) | 2005-10-19 |
US7661953B2 (en) | 2010-02-16 |
JP2003285350A (en) | 2003-10-07 |
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