A blow mold for producing medical vials

Abstract

The application discloses a kind of for producing medical medicine bottle blow mould, comprising: upper die body structure and spliced below lower die body structure;The upper die body structure includes: first upper die body and second upper die body, the side of first upper die body and second upper die body is connected with upper pneumatic telescopic rod, and the end of upper pneumatic telescopic rod is installed to the outside of upper fixed sleeve;The lower die body structure includes: mutually spliced first lower die body and second lower die body;The space surrounded by the upper die body structure and lower die body structure is die cavity, and the inside of die cavity is provided with parison film, and the top end of parison film is in contact with the inside top end of first upper die body and second upper die body, and the bottom end of parison film is provided with support spring, and the bottom end of support spring is in contact with first lower die body and second lower die body;Without moving preform, directly stretch blow molding is carried out to preform, and preforming and blow molding of preform can be completed in die cavity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blow molding, in particular to a blow molding mold for producing medical medicine bottles. BACKGROUND

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. With the birth of high-density polyethylene and the development of blow molding machines, blow molding technology has been widely used. The volume of hollow containers can reach thousands of liters, and some production has adopted computer control. The plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the obtained hollow containers are widely used as industrial packaging containers. According to the method of making a parison, blow molding can be divided into extrusion blow molding and injection blow molding. The newly developed ones are multilayer blow molding and stretch blow molding.

[0003] The existing stretch blow molding process is to first make a parison by extrusion or injection method, then treat the parison to a suitable stretching temperature of the plastic, and then perform longitudinal stretching by internal or external mechanical force, and at the same time or later, perform transverse stretching by compressed air blowing, and finally obtain the product; this requires first injection molding of a preformed embryo in one mold, and then placing the embryo into a blow molding mold for stretch blow molding, which is difficult to directly stretch blow molding of the embryo without moving the preformed embryo, and requires repeatedly moving the embryo to different processing stations, which is complicated. SUMMARY

[0004] The purpose of the present application is to provide a blow molding mold for producing medical medicine bottles, which solves the following technical problems:

[0005] In the existing stretch blow molding process, it is difficult to directly stretch blow molding of the embryo without moving the preformed embryo, and it is necessary to repeatedly move the embryo to different processing stations.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A blow molding mold for producing medical medicine bottles, comprising: an upper mold body structure and a lower mold body structure spliced below the upper mold body structure;

[0008] The upper mold body structure comprises: a first upper mold body and a second upper mold body, one side of the first upper mold body and the second upper mold body is connected with an upper pneumatic telescopic rod, and the end of the upper pneumatic telescopic rod is installed on the outer side of an upper fixed sleeve;

[0009] The lower mold body structure comprises: a first lower mold body and a second lower mold body spliced with each other;

[0010] The space surrounded by the upper die body structure and the lower die body structure is a die cavity, the inside of the die cavity is provided with a parison film, the top end of the parison film abuts against the inside top end of the first upper die body and the second upper die body, and the bottom end of the parison film is provided with a supporting spring piece, and the bottom end of the supporting spring piece abuts against the first lower die body and the second lower die body.

[0011] Further, the parison film is fixedly connected with supporting seats on two sides, the outer side of the supporting seat abuts against the inner side of the first upper die body and the second upper die body, and the top end of the supporting seat is fixedly installed with a telescopic supporting mechanism.

[0012] Further, the telescopic supporting mechanism comprises an outer pipe sleeve and an inner rod, the inside bottom end of the outer pipe sleeve is connected to the inner rod through a spring, and the top end of the inner rod abuts against the inside top end of the die cavity.

[0013] Further, the inside of the first upper die body and the second upper die body is provided with an upper die body water cooling pipe, the top end of the upper die body water cooling pipe is connected with a cold water pipe joint, the inside of the first lower die body and the second lower die body is provided with a lower die body cold water pipe corresponding to the upper die body water cooling pipe, and the inside of the upper die body water cooling pipe and the lower die body cold water pipe are in communication with each other.

[0014] Further, the outer side of the first upper die body and the second upper die body is provided with an outer extension plate, and the bottom end of the outer extension plate is flush with the bottom end of the first upper die body and the second upper die body.

[0015] Further, the end of the lower die body cold water pipe close to the upper die body water cooling pipe is provided with an inner annular groove, the inside of the inner annular groove is connected with a water pipe connecting sleeve through a compression spring, and the water pipe connecting sleeve extends to the inside of the upper die body water cooling pipe.

[0016] Further, the top end of the water pipe connecting sleeve is provided with a connecting sleeve inclined top surface, the connecting sleeve inclined top surface is arranged in an inclined manner, and the bottom end of the connecting sleeve inclined top surface is flush with the bottom end of the upper die body water cooling pipe.

[0017] Further, the bottom end of the first lower die body and the second lower die body is slidably connected with a lower die body sliding plate, and the bottom end of the lower die body sliding plate is connected with a bottom end telescopic rod.

[0018] Further, one side of the first lower die body and the second lower die body is connected to a lower sliding sleeve through a lower die body telescopic rod, and the lower sliding sleeve is slidably connected to the surface of the mounting sliding rod.

[0019] Further, the upper fixing sleeve is fixedly connected to the outer side of the mounting sliding rod.

[0020] The beneficial effects of the present application are as follows:

[0021] The raw material is injected into the opening of the upper die body structure by the extrusion head of the raw material extruding mechanism, the support seat and the support spring piece stably support the parison film, so that the parison film is stably fixed in the mold cavity, the raw material flows into the parison film through the opening of the upper die body structure, and a preformed embryo is formed; after the preformed embryo is formed, the first lower die body and the second lower die body are driven by the lower die body telescopic rod to move to both sides, the first lower die body and the second lower die body are separated, at this time, the support spring piece at the bottom end of the parison film loses support, the parison film falls downward, the parison film is conveniently taken out from the mold cavity surrounded by the upper die body structure and the lower die body structure, and the preformed embryo can be stretched and blow molded after the parison film is taken out; the embryo is directly stretched and blow molded without moving the preformed embryo, the preforming and blow molding of the embryo can be completed in the mold cavity, and the embryo does not need to be repeatedly moved to different processing stations. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings.

[0023] Fig. 1 is a structural schematic diagram of the application;

[0024] Fig. 2 is a structural schematic diagram of the parison film of the application;

[0025] Fig. 3 is a structural schematic diagram of the water pipe connecting sleeve of the application.

[0026] In the figure: 1, mounting slide rod; 2, lower slide sleeve; 3, lower die body telescopic rod; 4, outer extension plate; 5, upper die body water cooling pipe; 6, upper fixed sleeve; 7, cold water pipe joint; 8, first upper die body; 9, second upper die body; 10, second lower die body; 11, support seat; 12, parison film; 13, upper pneumatic telescopic rod; 14, lower die body cold water pipe; 15, lower die body slide plate; 16, bottom telescopic rod; 17, outer pipe sleeve; 18, inner rod; 19, inner annular groove; 20, connecting sleeve inclined top surface; 21, water pipe connecting sleeve; 22, first lower die body; 23, support spring piece. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be clearly and completely described below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0028] Please refer to Figs. 1-3 The application is a medical medicine bottle blow molding die for production, which comprises an upper die body structure and a lower die body structure spliced below the upper die body structure.

[0029] The upper die body structure comprises: a first upper die body 8 and a second upper die body 9, and one side of each of the first upper die body 8 and the second upper die body 9 is connected with an upper pneumatic telescopic rod 13, and the end of the upper pneumatic telescopic rod 13 is installed to the outside of the upper fixed sleeve 6;

[0030] The lower die body structure comprises: a first lower die body 22 and a second lower die body 10 which are spliced with each other;

[0031] Specifically, during demolding, the first upper die body 8 and the second upper die body 9 move to two sides under the action of the upper pneumatic telescopic rod 13, and the first lower die body 22 and the second lower die body 10 can also move, thereby facilitating demolding of the formed bottle body.

[0032] The space surrounded by the upper die body structure and the lower die body structure is a die cavity, and the die cavity is internally provided with a parison film 12, the top end of the parison film 12 abuts against the internal top end of the first upper die body 8 and the second upper die body 9, and the bottom end of the parison film 12 is provided with a supporting spring 23, and the bottom end of the supporting spring 23 abuts against the first lower die body 22 and the second lower die body 10.

[0033] Specifically, during blow molding, the extrusion head of the raw material extrusion mechanism is aligned with the opening of the upper die body structure to pour raw materials, the supporting seat 11 and the supporting spring 23 stably support the parison film 12, so that the parison film 12 is stably fixed in the die cavity, the raw materials flow into the parison film 12 through the opening of the upper die body structure to form a preformed blank; after the preformed blank is formed, the first lower die body 22 and the second lower die body 10 are driven by the lower die body telescopic rod 3 to move to two sides, and the first lower die body 22 and the second lower die body 10 are separated, at this time, the supporting spring 23 at the bottom end of the parison film 12 loses support, and the parison film 12 falls downward, thereby facilitating taking out the parison film 12 from the die cavity surrounded by the upper die body structure and the lower die body structure, and after the parison film 12 is taken out, the preformed blank can be stretch blow molded.

[0034] In one embodiment of the present application, the two sides of the parison film 12 are fixedly connected with the supporting seat 11, the outside of the supporting seat 11 abuts against the inside of the first upper die body 8 and the second upper die body 9, and the top end of the supporting seat 11 is fixedly installed with a telescopic supporting mechanism.

[0035] Specifically, the supporting seat 11 and the supporting spring 23 stably support the parison film 12; during demolding, the telescopic supporting mechanism on the supporting seat 11 at two sides of the parison film 12 ejects the parison film 12, thereby facilitating taking out the parison film 12 from the die cavity surrounded by the upper die body structure and the lower die body structure.

[0036] In one embodiment of the present application, the telescopic supporting mechanism comprises: an outer tube sleeve 17 and an inner rod 18, the inner bottom end of the outer tube sleeve 17 is connected to the inner rod 18 through a spring, and the top end of the inner rod 18 abuts against the internal top end of the die cavity.

[0037] Specifically, the inner rod 18 can slide in the outer sleeve 17, the top end of the inner rod 18 matches the inner top end inclined surface of the mold cavity, and the inner rod 18 is in contact with the inner top end of the mold cavity under the action of the spring.

[0038] In one of the embodiments of the present application, the first upper die body 8 and the second upper die body 9 are internally provided with upper die body water cooling pipes 5, the top end of the upper die body water cooling pipes 5 is connected with a cold water pipe joint 7, the first lower die body 22 and the second lower die body 10 are internally provided with lower die body cold water pipes 14 corresponding to the upper die body water cooling pipes 5, and the interiors of the upper die body water cooling pipes 5 and the lower die body cold water pipes 14 are in communication with each other.

[0039] Specifically, cooling water is introduced into the upper die body water cooling pipes 5 and the lower die body cold water pipes 14 through one end of the cold water pipe joint 7, and the cooling water is discharged through the other end of the cold water pipe joint 7, so that the upper die body structure and the lower die body structure are rapidly cooled, and the effect of rapid solidification of the formed bottle body is achieved.

[0040] In one of the embodiments of the present application, the first upper die body 8 and the second upper die body 9 are externally provided with an outer extension plate 4, and the bottom end of the outer extension plate 4 is flush with the bottom ends of the first upper die body 8 and the second upper die body 9.

[0041] Specifically, the outer extension plate 4 can press the water pipe connecting sleeves 21 of the first lower die body 22 and the second lower die body 10, so that the first lower die body 22 and the second lower die body 10 can slide close to the bottom end of the outer extension plate 4.

[0042] In one of the embodiments of the present application, the end of the lower die body cold water pipe 14 close to the upper die body water cooling pipe 5 is provided with an inner annular groove 19, the inner annular groove 19 is internally connected with a water pipe connecting sleeve 21 through a compression spring, and the water pipe connecting sleeve 21 extends into the interior of the upper die body water cooling pipe 5.

[0043] Specifically, the water pipe connecting sleeve 21 extends into the interior of the upper die body water cooling pipe 5, so that the upper die body water cooling pipe 5 and the lower die body cold water pipe 14 are more stably spliced.

[0044] In one of the embodiments of the present application, the top end of the water pipe connecting sleeve 21 is provided with a connecting sleeve inclined top surface 20, the connecting sleeve inclined top surface 20 is obliquely arranged, and the bottom end of the connecting sleeve inclined top surface 20 is flush with the bottom end of the upper die body water cooling pipe 5.

[0045] Specifically, when the first lower die body 22 and the second lower die body 10 move to both sides, the water pipe connecting sleeve 21 is gradually pressed down along the connecting sleeve inclined top surface 20 due to the oblique arrangement of the connecting sleeve inclined top surface 20, so that the water pipe connecting sleeve 21 is pressed down by the spring and retracts into the interior of the inner annular groove 19.

[0046] In one of the embodiments of the present application, the bottom ends of the first lower mold body 22 and the second lower mold body 10 are slidably connected with the lower mold body sliding plate 15, and the bottom end of the lower mold body sliding plate 15 is connected with the bottom end telescopic rod 16.

[0047] Specifically, during demolding, the first upper mold body 8 and the second upper mold body 9 are moved to the two sides under the action of the upper pneumatic telescopic rod 13, the first lower mold body 22 and the second lower mold body 10 can be moved to the two sides under the action of the lower mold body telescopic rod 3, and are moved downward under the action of the bottom end telescopic rod 16, so that the molded bottle body is quickly demolded.

[0048] In one of the embodiments of the present application, one side of the first lower mold body 22 and the second lower mold body 10 is connected to the lower sliding sleeve 2 through the lower mold body telescopic rod 3, and the lower sliding sleeve 2 is slidably connected on the surface of the installation sliding rod 1.

[0049] The lower sliding sleeve 2 can slide on the outside of the installation sliding rod 1, and the lower sliding sleeve 2 can stably move the lower mold body sliding plate 15.

[0050] In one of the embodiments of the present application, the upper fixing sleeve 6 is fixedly connected to the outside of the installation sliding rod 1.

[0051] The working principle of the present application is as follows: during blow molding, the extrusion head of the raw material extruding mechanism is aligned with the opening of the upper mold body structure to pour raw materials, the raw materials flow into the parison film 12 through the opening of the upper mold body structure, and the support seat 11 and the support spring 23 stably support the parison film 12 to form a preformed embryo; after the preformed embryo is formed, the first lower mold body 22 and the second lower mold body 10 are moved to the two sides under the action of the lower mold body telescopic rod 3, and the first lower mold body 22 and the second lower mold body 10 are separated, at this time, the telescopic supporting mechanism on the support seat 11 on the two sides of the parison film 12 pops out the parison film 12, which is convenient for taking out the parison film 12 from the mold cavity surrounded by the upper mold body structure and the lower mold body structure, and after the parison film 12 and the surrounding installed support seat 11, support spring 23 and telescopic supporting mechanism are taken out, the preformed embryo can be stretched and blow molded; the preformed embryo in the mold cavity is stretched and then blow molded by the blow molding mechanism, so that the preformed embryo is blow molded in the mold cavity; cooling water is introduced into the upper mold body water cooling pipe 5 and the lower mold body cooling water pipe 14 through one end of the cold water pipe joint 7, and the cooling water is discharged through the other end of the cold water pipe joint 7, so that the upper mold body structure and the lower mold body structure are quickly cooled, and the molded bottle body is quickly solidified; during demolding, the first upper mold body 8 and the second upper mold body 9 are moved to the two sides under the action of the upper pneumatic telescopic rod 13, the first lower mold body 22 and the second lower mold body 10 can be moved to the two sides under the action of the lower mold body telescopic rod 3, and are moved downward under the action of the bottom end telescopic rod 16, so that the molded bottle body is quickly demolded.

[0052] In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like refer to the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0053] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application shall still belong to the scope of the present patent.

Claims

1. A blow molding die for producing medical medicine bottles, characterized in that, include: The upper mold structure and the lower mold structure attached below it; The upper mold structure includes: a first upper mold (8) and a second upper mold (9), with an upper pneumatic telescopic rod (13) connected to one side of both the first upper mold (8) and the second upper mold (9), and the end of the upper pneumatic telescopic rod (13) is installed on the outside of the upper fixed sleeve (6). The lower mold structure includes: a first lower mold (22) and a second lower mold (10) that are spliced ​​together. The space enclosed by the upper mold body structure and the lower mold body structure is a mold cavity. A blank mold (12) is provided inside the mold cavity. The top of the blank mold (12) abuts against the top of the inner part of the first upper mold body (8) and the second upper mold body (9). A support spring (23) is provided at the bottom of the blank mold (12). The bottom of the support spring (23) abuts against the first lower mold body (22) and the second lower mold body (10). The blank mold (12) is fixedly connected to two sides of a support base (11). The outer side of the support base (11) abuts against the inner side of the first upper mold body (8) and the second upper mold body (9). A telescopic support mechanism is fixedly installed at the top of the support base (11). The telescopic support mechanism includes an outer tube sleeve (17) and an inner rod (18). The bottom end of the inner tube sleeve (17) is connected to the inner rod (18) by a spring, and the top end of the inner rod (18) abuts against the top end of the mold cavity.

2. The blow molding die for producing medical bottles according to claim 1, characterized in that, The first upper mold body (8) and the second upper mold body (9) are provided with upper mold body water cooling pipes (5), and the top end of the upper mold body water cooling pipes (5) is connected to a cold water pipe connector (7). The first lower mold body (22) and the second lower mold body (10) are both provided with lower mold body cold water pipes (14) corresponding to the upper mold body water cooling pipes (5). The upper mold body water cooling pipes (5) and the lower mold body cold water pipes (14) are interconnected.

3. A blow molding die for producing medical medicine bottles according to claim 1 or 2, characterized in that, An extension plate (4) is provided on the outer side of the first upper mold body (8) and the second upper mold body (9), and the bottom end of the extension plate (4) is flush with the bottom end of the first upper mold body (8) and the second upper mold body (9).

4. A blow molding die for producing medical bottles according to claim 3, characterized in that, The lower mold body cooling water pipe (14) has an inner annular groove (19) at the end near the upper mold body water cooling pipe (5). The inner annular groove (19) is connected to a water pipe connecting sleeve (21) by a compression spring. The water pipe connecting sleeve (21) extends into the interior of the upper mold body water cooling pipe (5).

5. A blow molding die for producing medical bottles according to claim 4, characterized in that, The top of the water pipe connecting sleeve (21) is set as the inclined top surface (20) of the connecting sleeve. The inclined top surface (20) of the connecting sleeve is inclined. The bottom end of the inclined top surface (20) of the connecting sleeve is flush with the bottom end of the water cooling pipe (5) of the upper mold body.

6. A blow molding die for producing medical medicine bottles according to claim 1, characterized in that, The bottom ends of the first lower mold body (22) and the second lower mold body (10) are slidably connected to the lower mold body slide plate (15), and the bottom end of the lower mold body slide plate (15) is connected to the bottom end telescopic rod (16).

7. A blow molding die for producing medical medicine bottles according to claim 1, characterized in that, The first lower mold body (22) and the second lower mold body (10) are connected to the lower sliding sleeve (2) via the lower mold body telescopic rod (3), and the lower sliding sleeve (2) is slidably connected to the surface of the mounting slide rod (1).

8. A blow molding die for producing medical bottles according to claim 1, characterized in that, The upper fixing sleeve (6) is fixedly connected to the outside of the mounting slide (1).

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