Bottom forming device in a blow mould

Abstract

The utility model discloses a bottom forming device of blow mould that improves cooling effect to shorten blow moulding post -cooling setting time, include: a pair of bottom forming half mould, this pair of bottom forming half mould is provided with bottom forming half cavity respectively, and the bottom forming half cavity on this pair of bottom forming half mould corresponds to each other, and when the mould closes, the bottom forming half cavity on this pair of bottom forming half mould forms bottom forming cavity, a plurality of cooling grooves are provided on the bottom forming half mould respectively, a pair of bottom forming half mould is provided with the sawtooth shape cooling row of teeth respectively on the outside of bottom forming half cavity on each profile thereof, and the cooling row of teeth on this pair of bottom forming half mould is staggered with each other. The bottom forming device can be widely used in the blow mould of middle -sized plastic bottle (barrel), can shorten the cooling time greatly, improves production efficiency.

Description

Technical Field

[0001] This utility model relates to a blow molding die for blow molding tube blanks, specifically to a bottom forming device in a blow molding die. Background Technology

[0002] like Figure 1 As shown, a traditional blow molding mold typically includes a pair of blow molding halves, each containing a blow molding cavity. These halves are equipped with conventional cooling channels, and each half has serrated cooling teeth on the outer side of its respective cavity. In practical use, the bottle (or barrel) bottom requires a considerable amount of time to cool and solidify after bonding, resulting in excessively long cooling times after each blow molding process and low production capacity. Furthermore, because traditional blow molding halves use a single-piece structure, their cooling channels cannot be densely arranged at the bottom molding area of ​​the blow molding cavity, further extending the time required for each blow molding process and further impacting production capacity. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bottom forming device in a blow molding mold that improves the cooling effect and shortens the cooling and setting time after blow molding.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a bottom forming device in a blow molding mold, comprising: a pair of bottom forming half molds, each of the pair of bottom forming half molds being provided with a bottom forming half cavity, the bottom forming half cavities on the pair of bottom forming half molds corresponding to each other, and when the mold is closed, the bottom forming half cavities on the pair of bottom forming half molds forming a bottom forming cavity, each of the bottom forming half molds being provided with a plurality of cooling grooves, and each of the pair of bottom forming half molds being provided with serrated cooling teeth on the outer side of the bottom forming half cavity on their respective parting surfaces, and the cooling teeth on the pair of bottom forming half molds being staggered.

[0005] As a preferred embodiment, in the bottom forming device of the blow molding mold, the plurality of cooling grooves are arranged circumferentially around the bottom forming cavity formed when the pair of bottom forming half molds are closed.

[0006] As a preferred embodiment, in the bottom forming device of the blow molding mold, the bottom forming cavity formed when the pair of bottom forming half molds are closed is square.

[0007] As a preferred embodiment, in the bottom forming device of the blow molding mold, the cooling grooves are evenly arranged around the bottom forming cavity formed when a pair of bottom forming half molds are closed.

[0008] As a preferred embodiment, in the bottom forming device of the blow molding mold, the four corners of the pair of bottom forming half molds are respectively provided with splicing positioning grooves.

[0009] The beneficial effects of this utility model are:

[0010] 1. This utility model increases the surface area of ​​the bottom of the bottle (barrel) formed by mold closing by setting mutually staggered cooling teeth on the outer side of each bottom forming half cavity on a pair of bottom forming half molds, thereby shortening the cooling and shaping time and improving production capacity.

[0011] 2. This utility model improves the cooling effect by arranging several cooling grooves circumferentially around the bottom forming cavity formed when the pair of bottom forming half molds are closed, further shortening the time required for cooling and shaping, and increasing production capacity.

[0012] 3. This utility model provides splicing positioning grooves at the four corners of the pair of bottom forming half molds, which allows them to be assembled with the upper part of the blow molding mold very accurately and conveniently. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the bottom forming device described in this utility model from one perspective.

[0014] Figure 2 This is a structural schematic diagram of the bottom forming device described in this utility model from another perspective.

[0015] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0016] Figures 1 to 3 The reference numerals in the attached figures are as follows: 11, bottom forming half mold; 112, bottom forming half cavity; 113, cooling toothed rack; 12, bottom forming half mold; 122, bottom forming half cavity; 123, cooling toothed rack; 13, cooling groove; 14, splicing positioning groove. Detailed Implementation

[0017] The following describes in detail, with reference to the accompanying drawings, a detailed embodiment of the bottom forming device in a blow mold according to the present invention.

[0018] like Figure 1 and Figure 2As shown, the bottom forming device in a blow mold according to this utility model includes: a pair of bottom forming half molds 11 and 12. Bottom forming half mold 11 has a bottom forming half cavity 112, and bottom forming half mold 12 has a bottom forming half cavity 122. The bottom forming half cavity 112 on bottom forming half mold 11 and the bottom forming half cavity 122 on bottom forming half mold 12 correspond to each other. When the mold is closed, the bottom forming half cavity 112 on bottom forming half mold 11 and the bottom forming half cavity 122 on bottom forming half mold 12 form a square bottom forming cavity. The bottom forming half mold 11 and the bottom forming half mold 12 form a square bottom forming cavity. 2. Several cooling grooves 13 are respectively provided on the bottom forming half mold 11 and the bottom forming half mold 12. All cooling grooves 13 are evenly arranged circumferentially around the bottom forming cavity formed when the bottom forming half mold 11 and the bottom forming half mold 12 are closed. The bottom forming half mold 11 has serrated cooling teeth 113 on its parting surface outside the bottom forming half cavity 112. The bottom forming half mold 12 has serrated cooling teeth 123 on its parting surface outside the bottom forming half cavity 122. Furthermore, the cooling teeth 113 on the bottom forming half mold 11 and the cooling teeth 123 on the bottom forming half mold 12 are staggered (see See). Figure 3 As shown in the figure; the four corners of the bottom forming half mold 11 and the bottom forming half mold 12 are respectively provided with splicing positioning grooves 14.

[0019] In practical applications, the bottom forming device is assembled with the upper part of the blow mold through four splicing positioning grooves 14 on the bottom forming half mold 11 and the bottom forming half mold 12. Furthermore, a cooling groove is provided on the bottom surface of the upper part of the blow mold, which is staggered from the cooling grooves 13 on the bottom forming half mold 11 and the bottom forming half mold 12. Thus, after the mold is closed, all the cooling grooves 13 on the bottom forming half mold 11 and the bottom forming half mold 12 are connected.

[0020] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made to the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A bottom forming device in a blow mold, comprising: A pair of bottom forming half molds, each having a bottom forming half cavity, the bottom forming half molds corresponding to each other, forming a bottom forming cavity when the mold is closed, characterized in that the bottom forming half molds are each provided with a plurality of cooling grooves, and the pair of bottom forming half molds are respectively provided with serrated cooling teeth on their respective parting surfaces outside the bottom forming half cavities, and the cooling teeth on the pair of bottom forming half molds are staggered.

2. The bottom forming device in a blow mold as described in claim 1, characterized in that: The aforementioned cooling grooves are arranged circumferentially around the bottom forming cavity formed when the pair of bottom forming half molds are closed.

3. The bottom forming device in a blow mold as described in claim 1, characterized in that: The bottom forming cavity formed when the pair of bottom forming half molds are closed is square.

4. The bottom forming device in a blow mold as described in claim 1, characterized in that: The cooling grooves are evenly arranged around the bottom forming cavity formed when a pair of bottom forming half molds are closed.

5. The bottom forming device in a blow mold according to any one of claims 1 to 4, characterized in that: The four corners of the pair of bottom forming half molds are respectively provided with splicing positioning grooves.

Images