CN213891220U

CN213891220U - Plastic medical consumable blow molding equipment

Info

Publication number: CN213891220U
Application number: CN202022161106.3U
Authority: CN
Inventors: 陈三玲; 田建贺; 田建磊
Original assignee: Henan Jianqi Medical Equipment Co Ltd
Current assignee: Henan Jianqi Medical Equipment Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-08-06
Anticipated expiration: 2030-09-25

Abstract

The utility model provides a plastic medical consumable blow molding device, which comprises a blow molding die, wherein the blow molding die comprises a left die and a right die, the left die and the right die which are matched form a molding cavity, the top of the molding cavity is provided with a bottle opening die, the bottle opening die is provided with a blow molding hole, and the blow molding hole is communicated with the molding cavity; the left die is provided with a left forming surface, the right die is provided with a right forming surface, the left forming surface and the right forming surface are respectively provided with a guide hole and a guide post, and when the left die and the right die are close to or far away from each other, the guide posts slide along the guide holes; the left forming surface and/or the right forming surface are/is provided with an off-type groove, the off-type groove is directly communicated with the external environment through a gas injection hole, and the off-type groove is not communicated with the forming cavity; chamfer grooves are arranged on the edge lines of the left die and the right die. When the left die and the right die which are separated together through manual operation are used, high-pressure gas can be flushed into the release groove to assist in die separation, and the chamfer groove is arranged so that a person can apply force to the left die and the right die to conveniently separate the dies.

Description

Plastic medical consumable blow molding equipment

Technical Field

The utility model relates to a medical treatment consumptive material production and processing technology field especially relates to a plastics medical treatment consumptive material blow molding equipment.

Background

Blow molding, also known as blow molding, is a rapidly developing plastic processing method. The blow molding process began during world war ii for the production of low density polyethylene vials. In the late 50 s, the blow molding technology has been widely used with the advent of high density polyethylene and the development of blow molding machines. The volume of the hollow container can reach thousands of liters, and computer control is adopted in some production. Suitable plastics for blow molding are polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the resulting hollow containers are widely used as industrial packaging containers. For medical consumables such as injection bottles and the like, blow molding is a production and processing mode with high efficiency and high yield.

In the blow molding process, the blow mold generally includes two mold halves that are butted together to form a molding cavity for blow molding. In the automatic production process, the approaching and the separating of the two half moulds are completed by mechanical action, and compared with mechanical force, the weight of the mould is smaller, so that adverse effects cannot be caused. However, when the mold is overhauled and allocated manually, because the weight of the mold is large and the outer surface of the mold is regular, when the two half molds are combined together, the two half molds are difficult to be smoothly separated by hands of workers or simple instruments, so that the mold is inconvenient to overhaul and has certain potential safety hazards.

SUMMERY OF THE UTILITY MODEL

Therefore, the plastic medical consumable blow molding equipment is needed to solve the problem that the mold is difficult to mold during manual maintenance of the conventional blow mold.

The above purpose is realized by the following technical scheme:

a blow molding device for plastic medical consumables comprises a blow mold, wherein the blow mold comprises a left mold and a right mold, the left mold and the right mold which are matched with each other form a molding cavity, a bottle neck mold is arranged at the top of the molding cavity, a blow molding hole is formed in the bottle neck mold, and the blow molding hole is communicated with the molding cavity; the left die is provided with a left forming surface, the right die is provided with a right forming surface, the left forming surface and the right forming surface are respectively provided with a guide hole and a guide post, and when the left die and the right die are close to or far away from each other, the guide posts slide along the guide holes; the left forming surface and/or the right forming surface are/is provided with an escape groove, the escape groove is directly communicated with the external environment through a gas injection hole, and the escape groove is not communicated with the forming cavity; and chamfer grooves are formed in the edge lines of the left die and the right die.

In one embodiment, the left mold and the right mold respectively comprise a bottle body mold and a bottle bottom mold, and chamfer grooves are formed in the surfaces of the bottle body mold, which are in contact with the bottle bottom mold.

In one embodiment, lifting lugs are arranged on the left die and the right die.

In one embodiment, a star-shaped groove and an annular groove are formed on a die surface of the bottle bottom die for forming the forming cavity.

In one embodiment, the left molding surface and the right molding surface are provided with air discharge grooves.

In one embodiment, a plurality of cooling water channels are arranged on each of the left die and the right die.

The utility model has the advantages that:

Drawings

Fig. 1 is a schematic structural view of a mold in a blow molding device for plastic medical consumables according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a left mold in the plastic medical consumable blow molding device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a right mold in the plastic medical consumable blow molding device according to an embodiment of the present invention;

fig. 4 is a sectional view of a mold in the plastic medical consumable blow molding device according to an embodiment of the present invention.

Wherein:

a left die 101; a right die 102; a left molding surface 103; a right molding surface 104; a bottle neck mold 105; a body mold 106; a bottle bottom mold 107; a molding cavity 108; a guide hole 111; a guide post 112; an escape groove 120; a chamfered groove 121; an exhaust groove 122; a lifting lug 130; the cooling water passage 131.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The utility model provides a plastics medical treatment consumptive material blow molding equipment, as shown in fig. 1 to fig. 3, including the blow molding mould, the blow molding mould includes left mould 101 and right mould 102, and the left mould 101 and the right mould 102 of looks adaptation form shaping cavity 108 after merging together, the shape phase-match of the shape of shaping cavity 108 and various medical bottle type consumptive materials. The top of the molding cavity 108 is provided with a bottle neck mold 105, the bottle neck mold 105 is provided with a blowing hole, the blowing hole is communicated with the molding cavity 108, and blowing materials and gas are injected into the molding cavity 108 through the blowing hole during blowing operation. The left die 101 is provided with a left forming surface 103, the right die 102 is provided with a right forming surface 104, the left forming surface 103 and the right forming surface 104 are both flat surfaces, and the left die 101 and the right die 102 are mutually attached during blowing. The left forming surface 103 and the right forming surface 104 are respectively provided with a guide hole 111 and a guide post 112, the axes of the guide post 112 and the guide hole 111 are perpendicular to the left forming surface 103 or the right forming surface 104, and the guide post 112 and the guide hole 111 are usually in a clearance fit relationship.

When the left mold 101 and the right mold 102 approach or move away from each other, the guide posts 112 slide along the guide holes 111, thereby ensuring that the left mold 101 and the right mold 102 are accurately butted. The left forming surface 103 and/or the right forming surface 104 are/is provided with a separation groove 120, the separation groove 120 is communicated with the external environment through a gas injection hole or directly, and the separation groove 120 is not communicated with the forming cavity 108. Chamfer grooves 121 are formed in the edge lines of the left die 101 and the right die 102. When the left die 101 and the right die 102, which are separated from each other, are manually operated, since the gap between the left molding surface 103 and the right molding surface 104 when they are in contact is very small, the rest positions of the mold are regular, and meanwhile, the mass of the mold is large, so that a worker cannot find a force application point to apply force to separate the left mold 101 from the right mold 102, high-pressure gas can be injected into the release groove 120, because the left forming surface 103 and the right forming surface 104 are tightly attached, the separating groove 120 has better air tightness, when the pressure in the release groove 120 is large, the left die 101 and the right die 102 can be separated by a certain distance, or the left die 101 and the right die 102 are separated by a certain distance under the force of manual assistance, when there is a certain gap between the left and

right molds

101 and 102, a person can apply a force to the gap between the left and

right molds

101 and 102 directly or by means of a tool to separate the left and

right molds

101 and 102. And a chamfered groove 121 is provided to allow a person to apply force to the left and

right molds

101 and 102 to facilitate separation of the molds.

In one embodiment, each of the left mold 101 and the right mold 102 includes a bottle body mold 106 and a bottle bottom mold 107, and the surfaces of the bottle body mold 106 and the bottle bottom mold 107 contacting each other are provided with a chamfer groove 121. When the injection blow molding is adopted, no excess material needs to be cut off, the integral mold bottom and the mold body are separated and are independently arranged on a workpiece taking position of a machine tool, and the workpiece taking function is achieved. When a tubular blank is used for blow molding, two half bottle bottom molds 107 are required to be arranged and respectively installed on the left mold 101 and the right mold 102, excess materials are cut off by the shearing blades during mold closing, and the shearing blades also play a role in clamping and sealing the parison. In order to facilitate the separation of the bottle bottom mold 107 and the bottle body mold 106, a chamfer groove 121 is also provided at the joint of the bottle bottom mold 107 and the bottle body mold 106 for applying force.

In one embodiment, the lifting lugs 130 are arranged on the left die 101 and the right die 102 so as to lift the die.

In one embodiment, the mold surface of the bottle bottom mold 107 for forming the molding cavity 108 is provided with a star-shaped groove and an annular groove.

In one embodiment, the air discharge grooves 122 are formed on both the left molding surface 103 and the right molding surface 104. Air must be evacuated between the surface of the forming chamber 108 and the surface of the parison as the parison is blown, and this air in these areas not only prevents adequate contact between the mold and the parison and reduces cooling efficiency, but also prevents the parison from acquiring a clean pattern or code from the forming chamber 108.

In one embodiment, as shown in fig. 4, a plurality of cooling channels 131 are provided on each of the left and

right molds

101 and 102. In blow molding, the heat of the plastic melt is continuously transferred to the mold, and the mold temperature is too high, which seriously affects the productivity. In order to maintain the mold temperature within a proper range, the mold is generally required to be provided with a cooling device. The distances between the cooling water channel 131 and the forming cavity 108 should be kept approximately equal to ensure uniform cooling shrinkage of the product.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The blow molding equipment for the plastic medical consumables is characterized by comprising a blow mold, wherein the blow mold comprises a left mold and a right mold, the left mold and the right mold which are matched form a molding cavity, a bottle neck mold is arranged at the top of the molding cavity, and a blow hole is formed in the bottle neck mold and communicated with the molding cavity; the left die is provided with a left forming surface, the right die is provided with a right forming surface, the left forming surface and the right forming surface are respectively provided with a guide hole and a guide post, and when the left die and the right die are close to or far away from each other, the guide posts slide along the guide holes; the left forming surface and/or the right forming surface are/is provided with an escape groove, the escape groove is directly communicated with the external environment through a gas injection hole, and the escape groove is not communicated with the forming cavity; and chamfer grooves are formed in the edge lines of the left die and the right die.

2. The plastic medical consumable blow molding apparatus according to claim 1, wherein the left mold and the right mold each comprise a bottle body mold and a bottle bottom mold, and chamfer grooves are provided on surfaces of the bottle body mold and the bottle bottom mold which are in contact with each other.

3. The plastic medical consumable blow molding apparatus of claim 1, wherein lifting lugs are provided on both the left and right molds.

4. The plastic medical consumable blow molding apparatus according to claim 2, wherein a star-shaped groove and an annular groove are provided on a mold surface of the bottle bottom mold for forming the molding cavity.

5. The plastic medical consumable blow molding apparatus of claim 1, wherein the left molding surface and the right molding surface are each provided with an air vent.

6. The plastic medical consumable blow molding apparatus of claim 1, wherein a plurality of cooling channels are provided on each of the left and right molds.