Mold for blow-molding container by using lip mold and blow mold together

Abstract

The utility model discloses a mould for blow-molding a container by using a lip mould and a blow-molding mould together, which is used for blow-molding a large-mass tube blank with a small container opening, and comprises a lip mould assembly arranged on an external one-step injection-stretch-blow plastic molding machine and used for injection-molding a bottle opening and a part of a bottle body of the tube blank; the blow molding die assembly is connected with the lip die assembly, and the blow molding die assembly is used for forming the remaining bottle body of the pipe blank; and the stretching rod stretches into the pipe blank, and the pipe blank is blow-molded into a required shape. According to the mold for blow-molding the container through the lip mold and the blow-molding mold together, the container with a small opening part and large mass can be produced by adopting a one-step injection-stretch-blow molding process.

Description

Technical Field

[0001] The utility model relates to the technical field of blow molding molds, in particular to a mold for blow molding a container together with a lip mold and a blow molding mold. Background Art

[0002] Usually, the lip mold only participates in the injection molding of the container mouth, and does not participate in the blow molding outside the container mouth. For some containers with small mouth size and heavy weight, the lip mold is usually only used for injection molding of the container mouth, and is not used as a part of the blow molding cavity to blow mold the parts outside the container mouth. This makes it difficult to use the one-step injection stretch blow molding process for some containers with small mouths and relatively large mass. The reason is that the mouth of the container limits the outer diameter of the tube embryo, and the inner diameter of the mouth of the container determines the core injection (used to close the inner wall of the injection molding tube embryo). Since the inner diameter of the mouth of the container itself is relatively small, the only way to meet the container quality requirements (the quality of the container is determined by the quality of the tube embryo) is to reduce the diameter of the core injection molding tube embryo and increase the wall thickness of the tube embryo to meet the container quality requirements. As a result, the inner wall of the core injection molding tube embryo becomes very thin, which seriously affects the strength and rigidity of the core injection and the cooling channel inside the core injection, making it impossible. Summary of the invention

[0003] According to an embodiment of the utility model, in order to solve the above-mentioned deficiencies of the prior art, a mold for blow-molding a container together with a lip mold and a blow mold is provided, which is used for blow-molding a tube blank with a small container mouth and a large mass, comprising:

[0004] The lip mold assembly is arranged on an external one-step injection stretch blow molding machine, and the lip mold assembly is used for injection molding the bottle mouth and part of the bottle body of the tube blank;

[0005] A blow mold assembly, the blow mold assembly is connected to the lip mold assembly, and the blow mold assembly is used to form the remaining bottle body of the tube blank;

[0006] The stretching rod extends into the tube embryo and blows the tube embryo into the desired shape.

[0007] Further, the lip mold assembly comprises: a first half lip mold, a second half lip mold, a first half lip template and a second half lip template;

[0008] The first half lip template and the second half lip template are combined into a complete lip template, and the lip template is arranged on an external one-step injection stretch blow molding plastic molding machine;

[0009] The first half lip mold and the second half lip mold are combined into a complete lip mold, and the lip mold is arranged on the lip mold plate.

[0010] Furthermore, the lip mold includes: a first molding part and a second molding part; the first molding part is used to mold the bottle mouth of the tube embryo, the second molding part is used to mold a part of the bottle body of the tube embryo, and the second molding part is connected to the first molding part.

[0011] Furthermore, the blow mold assembly comprises: a first half blow mold and a second half blow mold; the first half blow mold and the second half blow mold are combined into a complete blow mold; and the blow mold is connected to the second molding portion of the lip mold.

[0012] According to the embodiment of the utility model, the mold for blow-molding a container together with the lip mold and the blow mold can realize a container with a small mouth and relatively large mass, and is produced by a one-step injection stretch blow molding plastic molding process.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a mold for blow-molding a container together with a lip mold and a blow mold according to an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of a container blow-molded by a mold in which a lip mold and a blow mold are used together to blow-mold the container according to an embodiment of the utility model. Implementation

[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0017] First, combine Figure 1~2 The mold for blow-molding a container together with a lip mold and a blow mold according to an embodiment of the utility model is described, which is used for blow-molding a tube blank 4 with a small container mouth and large mass, and is widely used in blow-molding container molding scenarios.

[0018] like Figure 1 As shown, the mold for blow-molding a container together with the lip mold and the blow mold in the embodiment of the utility model comprises a lip mold assembly 1 , a blow mold assembly 2 and a stretch rod 3 .

[0019] Specifically, Figure 1 As shown, the lip mold assembly 1 is arranged on an external one-step injection stretch blow molding plastic molding machine, and the lip mold assembly 1 is used to injection mold the bottle mouth and part of the bottle body of the tube embryo 4; the blow mold assembly 2 is connected to the lip mold assembly 1, and the blow mold assembly 2 is used to mold the remaining bottle body of the tube embryo 4; the stretching rod 3 extends into the tube embryo 4 to blow the tube embryo 4 into a desired shape.

[0020] Further, if Figure 1As shown, the lip mold assembly 1 includes: a first half lip mold 11, a second half lip mold 12, a first half lip mold plate 13 and a second half lip mold plate 14; the first half lip mold plate 13 and the second half lip mold plate 14 are combined into a complete lip mold, and the lip mold plate is arranged on an external one-step injection stretch blow molding machine; the first half lip mold 11 and the second half lip mold 12 are combined into a complete lip mold, and the lip mold is arranged on the lip mold plate.

[0021] Further, if Figure 1 As shown, the lip mold includes: a first molding part 111 and a second molding part 112; the first molding part 111 is used to mold the bottle mouth of the tube embryo 4, and the second molding part 112 is used to mold a part of the bottle body of the tube embryo 4, and the second molding part 112 is connected to the first molding part 111. The lip mold structure of this embodiment is different from the traditional lip mold. The traditional lip mold only molds the mouth of the tube embryo 4. In addition to molding the mouth of the tube embryo 4, the lip mold of this embodiment can also perform injection molding on the part of the tube embryo 4 that originally belongs to the bottle body after inflation. Since the inner diameter of the container mouth determines the inner diameter of the tube embryo, when the lip mold molds the mouth and part of the bottle body of the tube embryo 4, the outer diameter of the tube embryo can be enlarged, thereby meeting the container quality requirements. If it is not processed in this way, the outer diameter of the tube embryo will not be increased much, and the container quality requirements cannot be met.

[0022] Further, if Figure 1 As shown, the blow mold assembly 2 includes: a first half blow mold 21 and a second half blow mold 22; the first half blow mold 21 and the second half blow mold 22 are combined into a complete blow mold; the blow mold is connected to the second molding portion 112 of the lip mold.

[0023] When in use, the lip mold is mounted on the lip mold plate, and the lip mold plate is mounted on the third station or the fourth station of the one-step injection stretch blow molding machine. The tube preform 4 is injection molded, and the bottle mouth of the tube preform 4 is molded in the first molding part 111 of the lip mold, and the second molding part 112 molds part of the bottle body of the tube preform 4, and the blow mold molds the remaining bottle body of the tube preform 4. External compressed air blows the bottle body of the tube preform 4 through the stretching rod 3 to meet the container shape requirements.

[0024] Above, refer to Figure 1~2 The utility model discloses a mold for blow-molding a container by using a lip mold and a blow mold together according to an embodiment of the utility model, which can realize a container with a small mouth and relatively large mass, and is produced by a one-step injection stretch blow molding plastic molding process.

[0025] In the description of the present invention, it should be noted that, unless otherwise specified, “plurality” means two or more than two; the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “top”, and “bottom” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, a variety of modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be defined by the attached claims.

Claims

1. A mold for blow molding containers with a lip mold and a blow molding mold, which is used for blow molding of tube blanks with small container mouths and large mass, characterized in that: Include: A lip mold assembly, wherein the lip mold assembly is arranged on an external one-step injection stretch blow molding machine, and the lip mold assembly is used for injection molding the bottle mouth and part of the bottle body of the tube embryo; A blow mold assembly, the blow mold assembly is connected to the lip mold assembly, and the blow mold assembly is used to form the remaining bottle body of the tube embryo; A stretching rod is inserted into the tube embryo to blow-mold the tube embryo into a desired shape.

2. The mold for blow-molding a container by a lip mold and a blow mold as claimed in claim 1, characterized in that: The lip mold assembly comprises: a first half lip mold, a second half lip mold, a first half lip template and a second half lip template; The first half lip template and the second half lip template are combined into a complete lip template, and the lip template is arranged on an external one-step injection stretch blow molding plastic molding machine; The first half lip mold and the second half lip mold are combined into a complete lip mold, and the lip mold is arranged on the lip mold plate.

3. The mold for blow-molding a container by a lip mold and a blow mold as claimed in claim 2, characterized in that: The lip mold comprises: a first molding part and a second molding part; the first molding part is used to mold the bottle mouth of the tube embryo, the second molding part is used to mold a part of the bottle body of the tube embryo, and the second molding part is connected to the first molding part.

4. The mold for blow-molding a container by a lip mold and a blow mold as claimed in claim 3, characterized in that: The blow mold assembly comprises: a first half blow mold and a second half blow mold; the first half blow mold and the second half blow mold are combined into a complete blow mold; the blow mold is connected to the second molding portion of the lip mold.

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