Injection mold plate and injection mold having such an injection mold plate

• US 9,956,708 B2
• Filed: 03/13/2013
• Issued: 05/01/2018
• Est. Priority Date: 03/16/2012
• Status: Active Grant

• Current Assignee: MHT Mold & Hotrunner Technology AG
• Original Assignee: MHT Mold & Hotrunner Technology AG
• Inventors: Thoemmes, Helmut, Wagner, Christian
• Primary Examiner(s): Hindenlang, Alison L
• Assistant Examiner(s): Luk, Emmanuel S
• Application Number:
  US14/384,499
• Publication Number:
  US 20150044324A1
• Time in Patent Office: 1,875 Days
• CPC Class Codes: B29B 11/08 Injection moulding
• CPC Class Codes: B29C 2045/7214 Preform carriers for cooling preforms
• CPC Class Codes: B29C 2045/7221 Means for ejecting the preforms
• CPC Class Codes: B29C 45/261 having tubular mould cavities
• CPC Class Codes: B29C 45/4225 Take-off members or carriers for the moulded articles, e.g. grippers
• CPC Class Codes: B29C 49/64 Heating or cooling preforms, parisons or blown articles
• CPC Class Codes: B29K 2105/253 Preform
• CPC Class Codes: B29K 2105/258 Tubular

Abstract

The present invention relates to an injection mold plate for use in an injection mold for producing molded articles, comprising a plurality of handling elements arranged in columns and rows, wherein the distance r between adjacent handling elements within the rows is greater than the distance s between adjacent handling elements within the columns. According to the invention, in order to provide an injection mold plate of the type mentioned above for which the distance between adjacent handling elements can be reduced without impairing the generally required heating channel, it is proposed that a row of handling elements is formed by two groups of handling elements, wherein the following applies to the distance z between the group: z=r(1+a/n), wherein r is the distance of the handling elements within a group and n, a ∈ IN with n>1.

Claims

1. An injection molding tool plate for use in an injection molding tool for producing molded articles comprising a plurality of handling elements arranged in columns and rows, wherein the spacing r between adjacent handling elements within the rows is greater than the spacing s between adjacent handling elements within the columns, wherein a row of handling elements is formed by two groups of handling elements, wherein the handling elements are cavities or cores whose inside or outside contour corresponds to the outside or inside contour of a molded article to be produced, such contour defining the outside or inside shape of the molded article, wherein the following applies for the spacing z between the groups of handling elements:

2. An injection molding tool plate as set forth in claim 1 where a <

n.

3. An injection molding tool plate as set forth in claim 2 where n <

5.

4. An injection molding tool plate as set forth in claim 2 wherein n =3.

5. An injection molding tool plate as set forth in claim 1 wherein a =1.

6. An injection molding tool plate as set forth in claim 1 wherein the injection molding tool plate is a post-treatment plate and the handling elements are removal elements, for removal of the molded articles from a removal plate.

7. An injection molding tool plate as set forth in claim 6 comprising at least one post-treatment set having a plurality of post-treatment elements arranged columns and rows, wherein the spacing r between adjacent post-treatment elements of the post-treatment set within the rows is greater than the spacing s between adjacent post-treatment elements of the post-treatment set within the columns, wherein a row of post-treatment elements of the post-treatment set is formed by two groups of post-treatment elements, wherein the following applies for the spacing z between the groups of post-treatment elements:

8. An injection molding tool plate as set forth in claim 7 wherein the plurality of post-treatment elements are cooling pins.

9. An injection molding tool plate as set forth in claim 7 wherein the number of post-treatment sets is n−

1.

10. An injection molding tool plate for use in an injection molding tool for producing molded articles comprising a plurality of handling elements arranged in columns and rows, wherein the spacing r between adjacent handling elements within the rows is greater than the spacing s between adjacent handling elements within the columns, wherein a row of handling elements is formed by two groups of handling elements, wherein the handling elements are cavities whose inside contour corresponds to the outside contour of a molded article to be produced, wherein the following applies for the spacing z between the groups of handling elements:

11. An injection molding tool plate as set forth in claim 10 wherein the number of the handling element sets is n.

12. An injection molding tool plate as set forth in claim 11 wherein associated with each handling element of a first handling element set is a handling element of a second handling element set, wherein the handling elements are intended to successively receive molded articles from the injection molding mold.

13. An injection molding tool plate as set forth in claim 12 wherein the following applies for the spacing h between the associated handling elements:

h =r /n.

14. An injection molding tool for the production of molded preforms comprising an injection molding tool comprising a plurality of handling elements arranged in columns and rows, wherein the spacing r between adjacent handling elements within the rows is greater than the spacing s between adjacent handling elements within the columns, wherein a row of handling elements is formed by two groups of handling elements, wherein the handling elements are cavities or cores whose inside or outside contour corresponds to the outside or inside contour of a molded article to be produced, wherein the following applies for the spacing z between the groups of handling elements:

15. The injection molding tool of claim 14, wherein spacing h between associated handling elements is h=r/n.