Injection mold cavity exhaust mechanism

Abstract

The utility model discloses an injection mold cavity exhaust mechanism which comprises a main body mechanism, the main body mechanism comprises a first shell, a first high-speed fan installed on the inner wall of the first shell, a plurality of hoses which are installed at the end of the first shell in an annular array mode and communicate with an inner cavity of the first shell, a fixing disc fixed to the ends of the hoses, an exhaust pipe installed on one side of the fixing disc and a second shell installed on one side of the first shell in a threaded connection mode. The first high-speed fan is installed on the inner wall of the first shell, the second high-speed fan is installed on the inner wall of the second shell, the dustproof net is installed on the inner wall of the second shell, the filtering piece is embedded between the first shell and the second shell, the first shell is cylindrical, and the first high-speed fan is installed in an inner cavity of the first shell and used for exhausting air in a mold cavity. One end of the hose communicates with the inner cavity of the first shell, the other end of the hose communicates with the exhaust pipe, and the injection mold cavity exhaust mechanism has the advantages of being good in exhaust effect and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold cavity exhaust mechanism. Background Art

[0002] With the advancement of technology, the production of plastic products is becoming increasingly convenient. These products are often made through injection molding, a processing method used for mass production of complex-shaped components. This process utilizes injection molds, a tool used to produce plastic products and give them their precise structure and dimensions. Specifically, the heated, molten plastic is injected into the mold cavity under high pressure by an injection molding machine. After cooling and solidification, the resulting molded product is formed.

[0003] The existing injection molds have the following main disadvantages during use: during the injection molding process, air is easily generated in the mold cavity, causing bubbles in the product and thus scrapping the product, and the product qualification rate is relatively average. Therefore, multiple exhaust holes are usually opened on the mold to discharge the air in the mold cavity during injection molding. However, when exhausting through the exhaust holes, the plastic injected into the mold cavity squeezes out the air, and the exhaust effect is poor. Air will still remain in the mold cavity during injection molding. Therefore, a mold cavity exhaust mechanism is urgently needed. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted by the present invention is: an injection mold cavity exhaust mechanism, comprising: a main body mechanism, the main body mechanism including a first shell, a first high-speed fan installed on the inner wall of the first shell, a plurality of hoses installed in a circular array at the end of the first shell and connected to the inner cavity of the first shell, a fixed plate fixed at the end of the hose, an exhaust pipe installed on one side of the fixed plate, a second shell installed on one side of the first shell through a threaded connection, a second high-speed fan installed on the inner wall of the second shell, a dust net installed on the inner wall of the second shell, and a filter element embedded between the first shell and the second shell.

[0006] In a preferred example, the present invention can be further configured as follows: the end of the exhaust pipe is provided with micro-holes in a circular array, and the diameter of the micro-holes is 1MM.

[0007] In a preferred example, the present invention can be further configured as follows: the fixed disk includes a circular disk fixed to the end of the hose and an annular magnet installed on one side of the circular disk.

[0008] In a preferred example, the present invention can be further configured as follows: a first annular plate is fixed on the inner wall of the first shell, and a second annular plate is fixed on the inner wall of the second shell. When the first shell is connected to the second shell, the filter element is embedded between the first annular plate and the second annular plate.

[0009] In a preferred example, the present invention can be further configured as follows: the filter element includes a cylinder, non-woven fabrics installed on both sides of the cylinder, and activated carbon particles filled in the inner cavity of the cylinder.

[0010] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0011] 1. In the utility model, a first shell is provided, and a first high-speed fan is installed on the inner wall of the shell. At the same time, a plurality of hoses are installed in a circular array at the end of the first shell to communicate with the inner cavity of the first shell. A fixed disk is installed at the end of the hose, and an exhaust pipe is installed on the fixed disk to communicate with the hose. The end of the exhaust pipe is provided with a plurality of microholes in a circular array. When in use, the exhaust pipe is inserted into the exhaust hole of the mold. During injection molding, the first high-speed fan is started to extract the air in the mold cavity through the exhaust pipe, and then enters the inner cavity of the first shell through the hose and is discharged outward. The air in the cavity is discharged by active exhaust, and the exhaust efficiency is high and the effect is good. It can effectively avoid the situation of residual air in the cavity during injection molding, thereby ensuring the injection molding effect.

[0012] 2. In the present invention, the second shell is installed on one side of the first shell by means of a threaded connection, and a filter is provided between the first shell and the second shell. The filter can filter the gas discharged from the first shell to prevent toxic and harmful molecules in the air in the cavity from being discharged into the external environment, thereby further improving the practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 3 It is a partial structural diagram of the utility model;

[0016] Figure 4 It is a partial structural decomposition diagram of the utility model.

[0017] Reference numerals:

[0018] 100. Main body; 110. First shell; 111. First annular plate; 120. First high-speed fan; 130. Hose; 140. Fixed plate; 141. Disc; 142. Ring magnet; 150. Exhaust pipe; 151. Micropores; 160. Second shell; 161. Second annular plate; 170. Second high-speed fan; 180. Dust screen; 190. Filter element; 191. Cylinder; 192. Non-woven fabric; 193. Activated carbon particles. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0020] Some embodiments of the present invention are described below with reference to the accompanying drawings. Example 1

[0021] Combine Figure 1-4 As shown, this embodiment provides an injection mold cavity exhaust mechanism, including: a main body mechanism 100.

[0022] Among them, the main body mechanism 100 includes a first shell 110, a first high-speed fan 120 installed on the inner wall of the first shell 110, a plurality of hoses 130 installed in a circular array at the end of the first shell 110 and connected to the inner cavity of the first shell 110, a fixed plate 140 fixed at the end of the hose 130, an exhaust pipe 150 installed on one side of the fixed plate 140, a second shell 160 installed on one side of the first shell 110 through a threaded connection, a second high-speed fan 170 installed on the inner wall of the second shell 160, a dust net 180 installed on the inner wall of the second shell 160, and a filter element 190 embedded between the first shell 110 and the second shell 160.

[0023] The first shell 110 is cylindrical, and the first high-speed fan 120 is installed in the inner cavity of the first shell 110 to discharge the air in the mold cavity. One end of the hose 130 is connected to the inner cavity of the first shell 110, and the other end is connected to the exhaust pipe 150. The fixed disk 140 is used to install the exhaust pipe 150 and ensure the stability of the exhaust pipe 150. The fixed disk 140 includes a disc 141 fixed to the end of the hose 130 and an annular magnet 142 installed on one side of the disc 141. When the exhaust pipe 150 extends into the exhaust hole in the mold, the annular magnet 142 can be adsorbed on the surface of the mold to ensure the fixation of the disc 141, thereby maintaining the stability of the exhaust pipe 150.

[0024] The exhaust pipe 150 is used to extend into the exhaust hole of the mold, so that the first high-speed fan 120 can extract the air in the mold cavity through the exhaust pipe 150 and the hose 130. Micropores 151 are opened in a circular array at the end of the exhaust pipe 150. The diameter of the micropores 151 is 1MM, which facilitates the passage of air and prevents hot-melt plastic from entering the exhaust pipe 150.

[0025] An internal thread is provided on the inner wall of the end of the second shell 160, and an external thread is provided on the outer surface of the end of the first shell 110. The two are engaged with each other to facilitate the installation and disassembly between the first shell 110 and the second shell 160. A first annular plate 111 is fixed on the inner wall of the first shell 110, and a second annular plate 161 is fixed on the inner wall of the second shell 160. When the first shell 110 and the second shell 160 are connected, the filter element 190 is embedded between the first annular plate 111 and the second annular plate 161, which facilitates the replacement of the filter element 190.

[0026] The second high-speed fan 170 and the first high-speed fan 120 have the same direction, which can increase the exhaust efficiency and effect. The dustproof net 180 can prevent dust and impurities from entering the inner cavity of the second shell 160.

[0027] The filter element 190 is used to filter the exhausted air to prevent toxic and harmful gases from being discharged into the external environment. It includes a cylinder 191, non-woven fabric 192 installed on both sides of the cylinder 191, and activated carbon particles 193 filled in the inner cavity of the cylinder 191. The cylinder 191 and the non-woven fabric 192 cooperate to form a closed environment for convenient storage of the activated carbon particles 193. The activated carbon particles 193 can adsorb toxic and harmful molecules in the exhausted air.

[0028] The working principle and usage process of the present invention are as follows: when in use, the exhaust pipe 150 is inserted into the exhaust hole on the mold, and the fixed plate 140 is made close to the mold surface. Under the magnetic attraction of the annular magnet 142, the stability of the fixed plate 140 is ensured. During injection molding, the first high-speed fan 120 and the second high-speed fan 170 are started to extract the air in the mold cavity through the exhaust pipe 150. The air in the cavity enters the inner cavity of the first shell 110 through the hose 130, and then passes through the filter element 190. The filter element 190 filters the toxic and harmful molecules in the air. After the filtration is completed, the air is discharged through the end of the second shell 160, thereby avoiding residual air in the mold cavity.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An injection mold cavity venting mechanism, comprising: The main body mechanism (100) is characterized in that the main body mechanism (100) includes a first shell (110), a first high-speed fan (120) installed on the inner wall of the first shell (110), a plurality of hoses (130) installed in a ring array at the end of the first shell (110) and connected to the inner cavity of the first shell (110), a fixed disk (140) fixed to the end of the hose (130), an exhaust pipe (150) installed on one side of the fixed disk (140), a second shell (160) installed on one side of the first shell (110) by a threaded connection, a second high-speed fan (170) installed on the inner wall of the second shell (160), a dust net (180) installed on the inner wall of the second shell (160), and a filter (190) embedded between the first shell (110) and the second shell (160).

2. The injection mold cavity venting mechanism according to claim 1, characterized in that: The end of the air extraction pipe (150) is provided with microholes (151) in a circular array, and the diameter of the microholes is 1 mm.

3. The injection mold cavity venting mechanism according to claim 1, characterized in that: The fixed disk (140) comprises a circular disk (141) fixed to the end of the hose (130) and an annular magnet (142) mounted on one side of the circular disk (141).

4. The injection mold cavity venting mechanism according to claim 1, characterized in that: A first annular plate (111) is fixed on the inner wall of the first shell (110), and a second annular plate (161) is fixed on the inner wall of the second shell (160). When the first shell (110) and the second shell (160) are connected, the filter element (190) is embedded between the first annular plate (111) and the second annular plate (161).

5. The injection mold cavity venting mechanism according to claim 4, characterized in that: The filter element (190) comprises a cylinder (191), non-woven fabrics (192) mounted on both sides of the cylinder (191), and activated carbon particles (193) filled in the inner cavity of the cylinder (191).

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