US 12,434,416 B2
Plastic injection tool for producing a closure cap, and method for producing a closure cap
Johannes Steurer, Langenegg (AT); Franz Helth, Hohenems (AT); and Erik Schneider, Koblach (AT)
Assigned to z-werkzeugbau-gmbh, Dornbirn (AT)
Appl. No. 18/017,454
Filed by z-werkzeugbau-gmbh, Dornbirn (AT)
PCT Filed Jul. 26, 2021, PCT No. PCT/EP2021/070813
§ 371(c)(1), (2) Date Jan. 23, 2023,
PCT Pub. No. WO2022/018296, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10 2020 119 585.0 (DE), filed on Jul. 24, 2020.
Prior Publication US 2023/0271363 A1, Aug. 31, 2023
Int. Cl. B29C 45/44 (2006.01); B29C 45/00 (2006.01); B29C 45/26 (2006.01); B29C 45/33 (2006.01); B29L 31/56 (2006.01)
CPC B29C 45/4435 (2013.01) [B29C 45/0081 (2013.01); B29C 45/26 (2013.01); B29C 45/2628 (2013.01); B29C 2045/334 (2013.01); B29L 2031/565 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A plastic injection tool (1) for producing a closure cap (5) with a cap body (14) and a cap cover (15) formed integrally with and of the same material as the cap body (14), wherein the injection tool (1) is divided into first and second mold halves (2, 3), which are configured to be displaced relative to one another, and wherein an injection nozzle (4) is formed in the first mold half (2), wherein sliding jaw tool parts (9), which are configured to simultaneously be moved in an ejection direction (r) of the produced closure cap (5) and perpendicular to the ejection direction (r), are further formed in the second mold half (3) radially outside to a central tool core (8), and a partial injection contour (16) of the cap body (14) is in each case formed in the sliding jaw tool parts (9), wherein the partial injection contours (16), combined in a circumferential direction of the closure cap (5) result in a complete injection contour of the part of the cap body (14), which is formed by the sliding jaw tool parts (9), wherein an ejector (48) is further provided to the second mold half (3), for ejecting the produced closure cap (5), wherein two or more of the sliding jaw tool parts (9) have partial injection contours (16) that differ from one another, wherein one of the sliding jaw tool parts (9) is in contact with the tool core (8) in the ejection direction (r) prior to the ejection of the closure cap (5) on two regions (51) located one behind the other in the ejection direction (r),
wherein the sliding jaw tool parts (9) extend in an axial direction over more than half of a height of the cap body (14) and wherein the sliding jaw tool parts (9) are wedge-shaped in cross-section, widening in a longitudinal direction toward the first mold half (2).