Source: https://patents.google.com/patent/US7458801?oq=5%2C815%2C794
Timestamp: 2018-05-21 02:14:10
Document Index: 3547675

Matched Legal Cases: ['art 12', 'art 14', 'art 14', 'art 62', 'art 64', 'art 64', 'art 112', 'art 114', 'art 114', 'art 210']

US7458801B1 - Removal from core mold part of tubular injection molded plastic product formed with two open ends - Google Patents
US7458801B1
US7458801B1 US11657148 US65714807A US7458801B1 US 7458801 B1 US7458801 B1 US 7458801B1 US 11657148 US11657148 US 11657148 US 65714807 A US65714807 A US 65714807A US 7458801 B1 US7458801 B1 US 7458801B1
US11657148
A hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product is removed from a core mold part by closing the threaded end of the molded product and injecting compressed air into the molded product to loosen the molded product from the core mold part. The threaded end of the product is closed by attaching a threaded closure having a matching thread onto the threaded end of the molded product. A robotic arm is used to robotically attach the threaded closure onto the threaded end of the product. The threaded closure is a plastic cap that injection molded in the injection molding system in which the product is injection molded, with the caps being injection molded at the same average rate as the products are injection molded.
This is a divisional of co-pending application Ser. No. 10/813,970 filed Mar. 31, 2004, which will issue as U.S. Pat. No. 7,169,342 on Jan. 30, 2007. This application is also related to application Ser. No. 11/140,818, which was filed on May 31, 2005 as a divisional of application Ser. No. 10/813,970 filed Mar. 31, 2004, and which issued as U.S. Pat. No. 7,707,989 on Jul. 18, 2006.
The present invention provides apparatus for removing an injection-molded hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product from a core mold part after the threaded end of the molded product has been opened by removal of a portion of the threaded end of the molded product, the apparatus comprising: means for closing the threaded end of the molded product after the threaded end of the molded product has been opened to the core mold part by removal of the portion of the threaded end of the molded product from the molded product; and means for injecting compressed air into the molded product to loosen the molded product from the core mold part, at least subsequently to said closing of the threaded end of the molded product.
The cavity mold part 12 is combined with the core mold part 14 as shown in FIGS. 3 and 4 to configure and reconfigure the mold cavity 16 for forming a molded product hollow plastic product 22 with a substantially tubular thin-wall section 24, one open end 26, one closed end 27 and a thread 28 at the outside of the closed end 27 of the molded product 22, as shown in FIGS. 5-7. The portion of the mold cavity 16 that forms the open end 26 of the molded product 22 is located between the outer core 20 and a section 31 of the core mold part 14.
The cavity mold part 62 is combined with the core mold part 64 as shown in FIGS. 11 to 13 to configure and reconfigure the mold cavity 66 for forming a molded product hollow plastic product 72 with a substantially tubular thin-wall section 74, one open end 76, one closed end 77 and a thread 78 at the outside of the closed end 77 of the molded product 72, as shown in FIGS. 14-16. The portion of the mold cavity 66 that forms the open end 76 of the molded product 72 is located between the outer core 70 and a section 81 of the core mold part 64.
The cavity mold part 112 is combined with the core mold part 114 as shown in FIGS. 19 to 21 to configure and reconfigure the mold cavity 116 for forming a molded product hollow plastic product 122 with a substantially tubular thin-wall section 124, one open end 126, one closed end 127 and a thread 128 at the outside of the closed end 127 of the molded product 122, as shown in FIGS. 20-24. The portion of the mold cavity 116 that forms the open end 126 of the molded product 122 is located between the outer core 120 and a section 131 of the core mold part 114.
A preferred embodiment of a process of removing an injection-molded hollow plastic product 200 with a substantially tubular section 202, two open ends 204, 206 and a thread 208 at the outside of one end 206 of the product 200 from a core mold part 210 is described with reference to FIGS. 25-30. The product 200 may be molded in a manner similar to the molding of the products in the embodiments described above with reference to FIGS. 1-24, with some modifications.
1. Apparatus for removing an injection-molded hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product from a core mold part after the threaded end of the molded product has been opened by removal of a portion of the threaded end of the molded product, the apparatus comprising;
means for closing the threaded end of the molded product after the threaded end of the molded product has been opened to the core mold part by removal of the portion of the threaded end of the molded product from the molded product; and
means for injecting compressed air into the molded product to loosen the molded product from the core mold part, at least subsequently to said closing of the threaded end of the molded product.
2. Apparatus according to claim 1, wherein the means for closing the threaded end of the molded product comprises means for attaching a threaded closure having a matching thread onto the threaded end of the product.
3. Apparatus according to claim 2, wherein the attaching means comprises means for robotically using a robotic arm to attach the threaded closure onto the threaded end of the product.
4. Apparatus according to claim 3, wherein the attaching means comprises the robotic arm and the robotic arm includes the threaded closure.
5. Apparatus according to claim 2, wherein the threaded closure is a plastic cap.
means for injection molding the plastic cap in the injection molding system in which the product is injection molded.
7. Apparatus according to claim 6, wherein the means for injection molding the plastic cap are adapted for injection molding plastic caps at the same average rate as the products are injection molded.
US11657148 2004-03-31 2007-01-24 Removal from core mold part of tubular injection molded plastic product formed with two open ends Active 2024-09-29 US7458801B1 (en)
US11657148 US7458801B1 (en) 2004-03-31 2007-01-24 Removal from core mold part of tubular injection molded plastic product formed with two open ends
US7458801B1 true US7458801B1 (en) 2008-12-02
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