WO2020000943A1

WO2020000943A1 - Method and system for producing dry ice for deburring mobile phone shell

Info

Publication number: WO2020000943A1
Application number: PCT/CN2018/123405
Authority: WO
Inventors: 李大海
Original assignee: 惠州凯美特气体有限公司
Priority date: 2018-06-27
Filing date: 2018-12-25
Publication date: 2020-01-02
Also published as: CN109052401A

Abstract

Disclosed are a method and system for producing dry ice for deburring a mobile phone shell. The production method comprises the following steps: preparing materials, involving: preparing liquid carbon dioxide required for production and storing same in a storage device (1); a first instance of forming, involving: conveying the liquid carbon dioxide in the storage device (1) to a granulation device (2) to make same into granular dry ice; and a second instance of forming, involving: delivering the granular dry ice to a tabletting device (3) by means of a transfer device (4) and pressing the granular dry ice into a block of dry ice by means of the tabletting device (3). For the block of dry ice prepared by the method for producing dry ice for deburring a mobile phone shell, a scraper blade can more easily scrape more granular dry ice compared with traditional dry ice that is directly prepared by compressing the liquid carbon dioxide, the size of the granular dry ice is uniform, and the defective rate and the reject rate of mobile phone shells in the deburring process are reduced.

Description

Production method and production system of dry ice for removing burr on mobile phone casing

Technical field

The invention relates to the technical field of dry ice production, and in particular, to a method and system for producing dry ice for removing burrs from a mobile phone casing.

Background technique

With the development of dry ice technology, the application scenarios of dry ice are becoming more and more extensive. Among them, in the process of burr grinding of mobile phone shells, block dry ice is scraped into small particles by a scraper, and then the small particles are impacted on the burr of the mobile phone shell by the air current. On the other hand, a small blast occurs to achieve the purpose of removing the burr on the mobile phone case.

The dry ice used in this burr removal process is directly transported from the high-pressure side of the storage tank to the low-pressure tablet press through liquid carbon dioxide, and the liquid carbon dioxide is directly compressed into the finished dry ice under the compression of the tablet press. The dry ice production process is simple and efficient. However, because the raw material entering the tablet press is liquid carbon dioxide, and the distribution of liquid carbon dioxide molecules is very uniform, the dry ice directly compressed by such liquid carbon dioxide will also be very hard and uniform.

In the existing mobile phone case deburring equipment, when using the scraper to scrape the above-mentioned dry ice, the generally formed particle size is 2-5mm, the particle size is uneven, and some of the particles are too small, hitting the burr on the mobile phone case The impact and blasting forces are too small, the burrs are clear and unclean, so that the rate of defective products is about 3%, and some particles are too large, it is easy to damage the mobile phone casing, so that the damage rate of the mobile phone casing during deburring is about 1 %, Increasing production costs of enterprises.

Summary of the invention

In view of the shortcomings of the prior art, the present invention provides a dry ice production method and a production system for deburring of a mobile phone casing.

According to a first aspect of the present invention, the present invention provides a dry ice production system for deburring of a mobile phone casing, which includes: a storage device, a granular device, a tabletting device, and a transmission device; the storage device is used to store liquid carbon dioxide; a granular device It is used to make granular dry ice from liquid carbon dioxide; the granule device is connected to the storage device; the tablet device is used to compact the granular dry ice into a block; the transmission device is used to transport the granular dry ice to the tablet device; the transmission device is arranged on the particles Between the device and the tabletting device.

According to an embodiment of the present invention, the installation height of the storage device, the particle device, the transport device, and the tabletting device is sequentially reduced.

According to a second aspect of the present invention, the present invention provides a method for producing dry ice for deburring a mobile phone case, which includes the storage device, the granule device, the tablet device, and the transmission device according to the first aspect of the present invention. It includes the following steps:

(1) Prepare materials and prepare the liquid carbon dioxide required for production to be stored in the storage device;

(2) the first molding, which transfers the liquid carbon dioxide in the storage device to the granule device and makes it into granular dry ice;

(3) For the second molding, the granulated dry ice is transported to the tabletting device by a conveying device, and the granulated dry ice is pressed to a block-shaped dry ice by the tabletting device.

According to an embodiment of the present invention, the size of the granular dry ice in step 3 is 2 to 3 mm. .

The beneficial effect of the present invention that is different from the prior art is that the block-shaped dry ice produced by the dry ice production method of the present invention for removing burrs on a mobile phone casing is easier to scrape than the traditional dry ice directly compressed by liquid carbon dioxide. Scrape more granular dry ice, and the size of the granular dry ice is uniform, reducing the defective rate and the defective rate of the mobile phone case during the deburring process.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and the descriptions thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

FIG. 1 is a structural diagram of a dry ice production system for deburring of a mobile phone case in an embodiment; FIG.

Fig. 2 is a schematic view showing the process steps of a method for producing dry ice for removing burrs from a mobile phone casing in an embodiment.

detailed description

Several embodiments of the present invention will be disclosed in the following diagrams. For the sake of clear description, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.

It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between components in a specific posture (as shown in the drawings). The relative positional relationship, movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions such as "first" and "second" in the present invention are used for descriptive purposes only, and are not meant to specifically refer to the order or order, nor are they intended to limit the present invention. Components or operations described by the same technical terms are nothing more than an indication or implied relative importance or an implicit indication of the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on those that can be realized by a person of ordinary skill in the art. When the combination of technical solutions conflicts or cannot be achieved, such a combination of technical solutions should be considered non-existent. , Is not within the scope of protection claimed by the present invention.

The invention relates to a related design of a dry ice production method and a production system for deburring of a mobile phone casing. The dry ice made by the method or system of the present invention is very suitable for grinding the burrs of mobile phone cases. Of course, the dry ice is also suitable for other production processes. In the following, the present invention and its benefits will be described in further detail in two specific embodiments.

Embodiment one:

Please refer to FIG. 1, which is a structural diagram of a dry ice production system for deburring of a mobile phone case in an embodiment.

This embodiment provides a dry ice production system for deburring a mobile phone casing, which includes a storage device 1, a granule device 2, a tabletting device 3, and a transmission device 4. The storage device 1 is used to store liquid carbon dioxide, and the granular device 2 is used to make liquid dry carbon dioxide into granular dry ice. The feed port of the granular device 2 and the liquid outlet of the storage device 1 are connected through a process pipe 5, where the liquid output of the storage device 1 The mouth is located at the bottom, and the liquid outlet is funnel-shaped. In this way, the liquid carbon dioxide can be used to output it to the granule device 2, which can save energy consumption. The tabletting device 3 is used to compact the granular dry ice into a block shape. The transmission device 4 is used to transport granular dry ice to the tabletting device 3, and the transmission device 4 is disposed between the particle device 2 and the tableting device 3. One end of the transmission device 4 is located below the discharge port of the particle device 2. The other end is located above the feed opening of the tabletting device 3.

The liquid carbon dioxide in the storage device 1 is conveyed to the granule device 2 through the process pipe 5. The granule device 2 converts the liquid carbon dioxide into granular dry ice and outputs it to the transmission device 4. The transmission device 4 then transports the granular dry ice to the tabletting device. 3. The tabletting device 3 compresses the granular dry ice into a block of dry ice and outputs the dry ice through its discharge port.

Further, in order to improve the production control of granular dry ice, a process valve 5 is provided with an on-off valve 6 for controlling the flow of liquid carbon dioxide. By controlling the on-off valve 6, the production of granular dry ice can be controlled and controlled from the feed source the amount.

Further, the installation height of the storage device 1, the granule device 2, the transmission device 4, and the tabletting device 3 are sequentially reduced. In this way, in the process of producing block dry ice by using the dry ice production system of the present invention, gravity can be used to make liquid carbon dioxide from the storage. The device 1 is transported to the granular device 2 so that the granular dry ice is output from the granular device 2 to the transfer device 4 and the granular dry ice is output from the transfer device 4 to the tabletting device 3, thereby saving design costs and reducing the dry ice production system of the present invention. Operating energy consumption.

Further, the storage device 1 is one of a vacuum tank, a spherical tank, and a low-temperature storage tank. The low-temperature storage tank can be used for the storage device 1 to achieve large-scale storage, occupying a small area, and having a simple structure, further reducing storage costs, and reducing Construction costs.

Further, the pellet device 2 uses a dry ice making machine, such as a pellet dry ice making machine of model KBM-300.

Further, the tabletting device 3 uses an ice press, such as a Frost ice press with the model FCP-03K.

Furthermore, the transmission device 4 uses a transmission belt or a chain plate conveyor, such as a model BL400 scale plate conveyor.

Embodiment two:

Please refer to FIG. 2, which is a schematic diagram of process steps of a method for producing dry ice for removing burrs on a mobile phone casing in an embodiment.

This embodiment provides a method for producing dry ice for removing burrs on a mobile phone case, which includes the following main steps: material preparation, first molding, and second molding.

In the material preparation step, liquid carbon dioxide used for production needs to be prepared, and the liquid carbon dioxide is stored in the storage device 1, the storage device 1 is one of a vacuum tank and a spherical tank. The storage device 1 may also use a vacuum tank and a spherical tank. With low-temperature storage tanks with low storage pressure and good safety, and the use of low-temperature storage tanks can realize large-scale storage, occupying less land, simple structure, further reducing storage costs, and reducing construction costs.

The production method of the present invention mainly uses liquid carbon dioxide as a raw material. Of course, gaseous carbon dioxide can also be used as a raw material. Correspondingly, it is necessary to add a process step of pressing gaseous carbon dioxide to liquid carbon dioxide in the method of the present invention. For example, the gaseous carbon dioxide can be liquefied into liquid carbon dioxide, and then the liquid carbon dioxide can be sent to the storage device 1.

In the first molding step, the liquid carbon dioxide is transferred from the storage device 1 to the granule device 2 and converted into granulated dry ice. The granule device 2 is manufactured by using a standard granule dry ice maker on the market, such as KBM-300 granule dry ice. In the pellet device 2, the liquid carbon dioxide is made into granular dry ice with a size of 2 to 3 mm. The storage device 1 and the pellet device 2 are connected through a process pipe 5.

In the second molding step, the granular dry ice is transported to the tableting device 3 through the transfer device 4 for briquetting or tabletting. Among them, the granular dry ice can be transported through the transfer belt or the chain plate conveyor. 3 Uses standard block presses or ice presses on the market, such as the FCP-03K Frosen ice press. The tablet device 3 compresses the granular dry ice into block-shaped dry ice of corresponding size through compression.

In summary, the secondary dry block ice produced by the production method for removing burrs of dry ice of a mobile phone casing according to the present invention is compressed with granular dry ice, so the surface of the block dry ice is uneven. At the same time, its internal structure is still formed by compressing and connecting a plurality of granular dry ice, and the block-shaped dry ice is in the shape of "rice cake" as a whole. Because there is a gap between the granular dry ice particles, the secondary dry block ice is relatively tighter than the traditional dry ice compressed directly by liquid carbon dioxide after the secondary dry block ice. The degree is more loose and the density is lower. When the secondary shaped block of dry ice is applied to the process of removing the burr of the mobile phone shell, the scraper will more easily scrape more granular dry ice, and the size of the granular dry ice scraped by the scraper is 2 ~ 3mm, which makes the deburring During the process, the particle dry ice used is uniform in size, reducing the defective rate and the defective rate of the mobile phone case in deburring. The defective rate is reduced to about 0.5%, the bad frequency is reduced to about 0.1%, and the production quality is improved. Reduce the production costs of enterprises.

The above description is only an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of claims of the present invention.

Claims

A dry ice production system for deburring of a mobile phone shell is characterized in that it includes:

Storage device for storing liquid carbon dioxide;

A granular device for making liquid carbon dioxide into granular dry ice; the granular device is connected to the storage device;

A tabletting device for compressing granular dry ice into lumps; and

A transmission device for transporting granular dry ice to a tabletting device; the transmission device is disposed between the particle device and the tableting device.
The dry ice production system for removing burrs of a mobile phone casing according to claim 1, wherein the installation height of the storage device, the granule device, the transmission device, and the tabletting device is sequentially reduced.
A method for producing dry ice for removing burrs on a mobile phone casing, comprising a storage device, a granule device, a tablet device, and a transmission device according to any one of claims 1-2, comprising the following steps: :

(1) Prepare materials and prepare the liquid carbon dioxide required for production to be stored in the storage device;

(2) the first molding, which transfers the liquid carbon dioxide in the storage device to the granule device and makes it into granular dry ice;

(3) For the second molding, the granulated dry ice is transported to the tabletting device by a conveying device, and the granulated dry ice is pressed to a block-shaped dry ice by the tabletting device.
The method for producing dry ice for removing burrs of a mobile phone casing according to claim 3, wherein the size of the granular dry ice in the step 3 is 2 to 3 mm.