CN112078115A

CN112078115A - Blow molding apparatus

Info

Publication number: CN112078115A
Application number: CN201910509258.7A
Authority: CN
Inventors: 谢樹林; 罗致中; 赖柏丞
Original assignee: Quanbao Industrial Co ltd
Current assignee: Quanbao Industrial Co ltd; Chumpower Machinery Corp
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-12-15

Abstract

The invention provides blow molding equipment, which comprises a fixed base, a rotating disc, a flow channel and an inlet and/or an outlet, wherein the rotating disc is rotatably arranged on the fixed base, the flow channel is arranged between the rotating disc and the fixed base, the rotating disc or the fixed base is provided with the inlet and/or the outlet communicated with the flow channel, and the inlet is used for injecting heat exchange media into the flow channel and outputting the heat exchange media from the outlet. Therefore, when the formed bottle blank is positioned on the workbench on the turntable, the heat exchange medium in the flow channel can form heat exchange with the formed bottle blank to provide heat energy or cold energy for the bottle blank.

Description

Blow molding apparatus

Technical Field

The invention relates to blow molding equipment, in particular to blow molding equipment which can adjust the temperature so as to facilitate the bottle blowing process.

Background

The blow molding machine for producing bottles can be roughly classified into one-stage molding and two-stage molding according to the distance between the injection device and the bottle blowing device. The one-stage forming machine is used for extending and blowing air by utilizing the temperature of the bottle blank when the bottle blank is not cooled, although the energy consumption is low, the method is only suitable for general bottle bodies, namely bottle bodies with uniform body thickness and without handles. If the bottle blank forming machine is used for producing bottles with handles or bottles with different thicknesses, the molding temperature conditions of the handles and the bottle body blanks are different, and the bottles are molded on different positions on the workbench. Therefore, it is necessary to install a temperature control device on the table or add another complicated process.

The applicant filed a new patent M568777 disclosing a blow molding machine for producing bottles with handles, which delivers a temperature-adjusting fluid to at least one of a plurality of tables through a rotary joint disposed at the axis of the turntable table, and continuously adjusts the temperature until the bottle blowing is completed, thereby overcoming the problem of different working temperatures. However, since the structure is configured by the rotary joint and the axis of the turntable, it is not suitable for other models, and thus still needs to be improved.

Disclosure of Invention

The invention aims to provide blow molding equipment which can be applied to different machine type structures under the condition of not using a rotary joint and can provide a temperature adjusting function of cooling or heating.

Therefore, the invention provides blow molding equipment, which comprises a fixed base, a rotary disc, a flow channel and a heat exchange medium, wherein the rotary disc is rotatably and axially arranged on the fixed base and used for positioning a working table and driving the working table to move between a lifting device and a bottle blowing device, the blow molding equipment is also provided with the flow channel arranged between the rotary disc and the fixed base, the rotary disc or the fixed base is provided with an inlet and/or an outlet communicated with the flow channel, and the inlet is used for injecting the heat exchange medium into the flow channel and outputting the heat exchange medium from the outlet.

Therefore, after the formed bottle blank is positioned on the workbench and transferred to the turntable, the heat exchange medium in the flow channel can output heat energy or cold energy to form heat exchange with the formed bottle blank, and the temperature of the bottle blank is adjusted to facilitate the bottle blowing process.

The flow passage can be an annular flow passage or a spiral flow passage, and the annular flow passage is arranged side by side or the spiral flow passage is spirally wound for more than one circle along the axis of the rotating disc so as to increase the heating area and improve the heat exchange efficiency.

Drawings

FIG. 1 is a schematic view of a part of the apparatus of a blow molding apparatus.

Fig. 2 is a view of the turntable and the fixed base combined together.

Fig. 3 is a schematic structural view of the turntable.

Fig. 4 is a schematic structural view of the fixed base.

Fig. 5 is a sectional view of the turntable assembled with the fixed base.

Detailed Description

The invention relates to blow molding equipment, which is particularly suitable for manufacturing operation adopting one-stage molding. To clearly illustrate the embodiments, structures and effects achieved by the present invention, an embodiment is provided and described below with reference to the drawings.

In the present embodiment, the rotating disc of the blow molding apparatus is horizontally disposed, and the rotating shaft direction of the rotating disc is defined as a vertical direction, so as to meet the knowledge of those skilled in the art and help to understand the present invention.

Referring to fig. 1, fig. 3 and fig. 4, fig. 1 is a schematic diagram of a part of the apparatus of the blow molding apparatus, which includes a fixed base 10 and a turntable 20 that are assembled, a driving device 60 (located above fig. 1) disposed on a side of the fixed base 10 away from the turntable 20, and a lifting device 50 (located below fig. 1) on the same side as the turntable 20. The preform (not shown) is transported between the lifting device 50 and the turntable 20 by the table 21, wherein the table 21 can be moved from the lifting device 50 to the turntable 20 and positioned so that the table 21 can rotate with the turntable 20.

In the present embodiment, the blow molding apparatus is used to manufacture the bottle body with the handle, but the blow molding apparatus is also suitable for manufacturing the bottle body without the handle.

When the table 21 is located on the lifting device 50 (as shown in the state of the table 21 in fig. 1), the gate of the lifting device 50 is connected to the mold of the table 21 to perform the injection molding of the bottle body handle and the bottle body and bottle blank, and the temperature adjusting device disposed around the bottle blank is used to cool the bottle body handle and maintain the bottle body and bottle blank at the setting temperature, thereby completing the step of forming the bottle blank. Subsequently, the temperature control device is removed, and the table 21 is transferred to the circumferential underside of the turntable 20 and positioned. Then, the driving device 60 drives the turntable 20 to drive the worktable 21 to move to a bottle blowing device (not shown) located at the opposite side of the lifting device 50, and the bottle blowing device is used to complete the molding of the bottle body and the bottle preform.

Referring to fig. 2 to 5, the fixed base 10 and the rotary plate 20 are exemplarily shown in detail, the rotary plate 20 is a ring structure with a hollow interior, and therefore an inner peripheral wall 22 is disposed inside the rotary plate 20; meanwhile, the bottom side of the fixing base 10 is provided with an assembling portion corresponding to the turntable 20, so that the turntable 20 can be sleeved on the assembling portion through the inner peripheral wall 22 thereof. Therefore, the turntable 20 is axially disposed on the fixed base 10 through the inner peripheral wall 22, the inner peripheral wall 22 is disposed with two annular flow channels 23 arranged side by side up and down, the flow channels 23 are disposed with an inlet 24 and an outlet 25 respectively connected to the surface of the turntable 20, and the fixed base 10 is disposed with an inlet 11 and an outlet 12 respectively connected to the annular flow channels 23

It should be noted that, in order to increase the sectional area of the flow channel 23, the assembling portion of the fixed base 10 for the rotating disk 20 to be sleeved may also be provided with a flow channel, so as to increase the circulating heat exchange medium, thereby increasing the heat energy or the cold energy of the heat exchange. Of course, it is also possible to directly change the flow channels on the rotary plate 20 to be disposed on the fixed base 10, or reduce the number of the annular flow channels to one, or increase the number of the annular flow channels to more than three.

Therefore, the flow channels used by the blow molding equipment are located at the same horizontal level, the heat exchange medium can be injected from the

inlets

11 and 24 of the fixed base 10 or the rotating disc 20, and different machine type structures can be applied without using a rotating joint, so that the temperature adjusting function of cooling or heating is provided.

In practical application, the bottle preform is positioned on the working table 21 of the turntable 20, and the heat exchange medium in the flow channel 23 of the turntable 20 provides heat energy or cold energy to form heat exchange with the bottle preform, so as to adjust the temperature of the bottle preform, thereby facilitating the bottle blowing process. Since 2 annular flow passages 23 are provided, a large heat receiving area is provided.

In addition, since the temperature adjusting device only adjusts the temperature of the worktable 21 through the flow passage 23, it is advantageous to arrange other elements, such as: a guide post is arranged between the fixed base 10 and the lifting device 50 for controlling the working platform 21 to lift up and down.

In addition to the foregoing embodiments, the flow channel 23 located on the inner peripheral wall 22 of the rotating disc 20 may also be a spiral flow channel, such that the flow channel 23 located on the inner peripheral wall 22 of the rotating disc 20 spirally surrounds the axis of the rotating disc 20 for more than one turn and approximately 2 turns (i.e. the central angle of the flow channel 23 around the axis exceeds 360 degrees and is approximately 720 degrees), and as shown in fig. 5, two

flow channels

23A and 23B are formed in parallel on the same cross section to increase the heat receiving area. The blow molding apparatus may also use a greater number of turns of the spiral runner to increase the heat receiving area.

Therefore, the inlet and the outlet of the spiral flow channel are positioned at different horizontal heights, and the inlet can be higher than the outlet; therefore, the injected heat exchange medium is influenced by gravity and naturally flows from the inlet to the outlet, and the energy consumption for driving the heat exchange medium can be saved.

In the case of using the spiral flow channel, the inlet and the outlet may be disposed on the surface of the turntable 20 or the fixed base 10, or may be disposed on the surface of the turntable 20 and the fixed base 10, respectively, to provide greater design flexibility.

The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solution of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a blow molding equipment, includes a fixed baseplate to and a carousel is rotatable cup joints in this fixed baseplate, its characterized in that: the rotary table further comprises at least one flow channel arranged between the rotary table and the fixed base, the at least one flow channel surrounds the axis of the rotary table, and the fixed base or the rotary table is provided with an inlet and/or an outlet communicated with the flow channel.

2. The apparatus of claim 1, wherein the number of the at least one runner is two and the at least one runner is disposed side by side on an inner peripheral wall of the turntable or the fixed base.

3. The blow molding apparatus of claim 2, wherein the runners are annular runners and are at the same level.

4. The apparatus of claim 1, wherein the number of the at least one runner is one, and the at least one runner is disposed on an inner peripheral wall of the turntable or the fixed base.

5. The blow molding apparatus as claimed in claim 4, wherein said runner is a spiral runner spirally wound along an axis of said turntable.

6. The blow molding apparatus of claim 5, wherein the runner spirals more than once along the axis of the turntable.

7. The blow molding apparatus of claim 6, wherein the inlet of the runner is at a higher level than the outlet of the runner.

8. The apparatus of claim 1, wherein the number of the at least one runner is two and the at least one runner is disposed on an inner peripheral wall of the turntable and the fixed base respectively.

9. The apparatus of claim 1, wherein the turntable is disposed on one side of the stationary base, and a driving device is disposed on the other side of the stationary base opposite to the turntable.