Feeding mechanism of micro injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a micro injection molding machine feeding mechanism which comprises a feeding barrel, the bottom of the feeding barrel protrudes outwards, an external thread is arranged on the outer side of a protruding body and used for being connected with an injection molding machine, and an annular second sealing ring is installed in a connecting opening in the bottom of the feeding barrel; a horizontal metal plunger is arranged in the feeding barrel, an annular upper cover with a hollow center is arranged above the metal plunger, a disc-shaped lower cover is arranged below the metal plunger, and the upper cover and the lower cover are both spirally connected with the metal plunger through screws; a first sealing ring is mounted on the outer side of the metal plunger; when the feeding barrel is used, the feeding barrel is made of metal, deformation is not prone to occurring when external pressure is exerted on the feeding barrel, precision is high, glue leakage is not prone to occurring, borne pressure is larger, replacement is convenient, and therefore low cost and high efficiency are achieved, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a feeding mechanism for a micro injection molding machine. Background Technology

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding design that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The existing patent application number is 201720065741.7. The liquid silicone injection molding machine solves the problem that the injection molding machine will accidentally damage the injection pipe when taking it out by setting a spray pipe, a baffle, a first support plate, a second support plate, a motor, a screw, a movable screw block, a first connecting rod, an opening, a second connecting rod, a fixed rod, a roller and a controller. The liquid silicone injection molding machine can automatically withdraw the pipe to avoid damage to the spray pipe due to the user's carelessness, which is convenient for the user to use;

[0003] In the existing silicone injection molding machine, the material is generally in liquid state. The cover body inside the feed barrel is squeezed by the equipment. First, the external environment can be prevented from affecting the rubber material. Second, the cover body can be driven to move by the extrusion equipment, thereby realizing the slow discharge of liquid silicone material and being discharged from the injection tube to realize the injection molding of the product. However, since the existing feed barrel is generally made of plastic, when the silicone material is discharged, the equipment squeezes the top cover of the barrel and applies pressure to the silicone material, and the silicone material will exert pressure on the periphery. At the same time, since the plastic barrel has a certain ductility, when the discharge speed is accelerated and the pressure reaches a certain value, it is very easy for the material to leak and the barrel to be scrapped. Its service life is very short, and it is generally scrapped in one week, which is a great waste of resources. Therefore, a feeding mechanism of a micro injection molding machine is proposed to address the above problems. Contents of utility model

[0004] The purpose of the utility model is to provide a feeding mechanism for a micro injection molding machine to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] As an optional solution of the feeding mechanism of a micro injection molding machine described in the utility model, wherein: a feeding mechanism of a micro injection molding machine includes a feeding barrel,

[0007] The bottom of the feed barrel protrudes outwards and an external thread is provided on the outside of the protrusion for connection with the injection molding machine, and an annular second sealing ring is installed inside the connection port at the bottom of the feed barrel;

[0008] A horizontal metal plunger is arranged inside the feed barrel, an annular upper cover with a hollow center is arranged above the metal plunger, a disc-shaped lower cover is arranged below the metal plunger, and both the upper cover and the lower cover are spirally connected to the metal plunger by screws;

[0009] A first sealing ring is installed on the outer side of the metal plunger.

[0010] As an optional solution of the feeding mechanism of a micro injection molding machine described in the utility model, wherein: the number of the first sealing rings is two groups, and the first sealing rings are symmetrically arranged about the center of the metal plunger.

[0011] As an optional solution for the feeding mechanism of a micro injection molding machine described in the utility model, wherein: the feeding barrel is made of metal stainless steel plate.

[0012] In the existing silicone injection molding machine, the material is generally in liquid state. The device squeezes the cover inside the feed barrel to achieve slow discharge of liquid silicone material and discharge it from the injection tube. However, since the existing feed barrel is generally made of plastic, when the silicone material is discharged, the device squeezes the top cover of the barrel and applies pressure to the silicone material, and the silicone material will apply pressure on both sides. At the same time, the plastic barrel has a certain ductility. At this time, it is very easy for the material to leak and the barrel to be scrapped. Its service life is very short, generally scrapped in one week. When in use, the lower part of the feed barrel is put on the feed port of the micro injection molding machine, and the feed barrel is rotated. The feed barrel is tightly connected with the micro injection molding machine. The feed barrel is made of metal, which is not easy to deform when external pressure is applied, and has high precision and is not easy to leak glue, can withstand greater pressure, and is easy to replace, thereby achieving low cost and high efficiency, and a longer service life. Two sets of first sealing rings are arranged on the outside of the metal plunger, and the second sealing ring can be used to ensure that the feed barrel has good sealing performance, and it is not easy to leak during long-term use.

[0013] As an optional solution of the feeding mechanism of a micro injection molding machine described in the utility model, wherein: the upper and lower end surfaces of the metal plunger are both provided with annular grooves, and the opposite end surfaces of the upper cover and the lower cover are both integrally provided with a convex ring protruding outward, and the upper cover and the lower cover are tightly matched with the grooves of the upper and lower end surfaces of the metal plunger through the convex ring.

[0014] As an optional solution of the feeding mechanism of the micro injection molding machine described in the utility model, the top of the feeding barrel is open.

[0015] ​The raised ring on the opposite end faces of the upper cover and the lower cover is embedded into the grooves on the upper and lower sides of the metal plunger, realizing the tight fit between the upper cover, the lower cover and the metal plunger. Furthermore, it ensures that the upper cover, the metal plunger and the lower cover are concentric during use, guaranteeing its normal operation.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] When the present utility model is in use, its feeding barrel is made of metal. It is not easily deformed when an external pressure is applied, has high precision, is not prone to glue leakage, can withstand greater pressure, is convenient to replace, thus achieving low cost and high efficiency, and has a longer service life.

[0018] Two sets of first sealing rings are arranged on the outer side of the metal plunger. Cooperating with the second sealing ring, it can ensure that the feeding barrel has good sealing performance and is not prone to leakage during long-term use. At the same time, the opposite end faces of the upper cover and the lower cover are embedded into the upper and lower sides of the metal plunger, ensuring that the upper cover, the metal plunger and the lower cover are concentric and guaranteeing its normal use. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is the cross-sectional view of the present utility model.

[0021] In the figure: 1, feeding barrel; 2, upper cover; 3, metal plunger; 4, lower cover; 5, first sealing ring; 6, second sealing ring. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figure 1 and Figure 2 , the present utility model provides a technical solution:

[0025] A feeding mechanism for a micro-injection molding machine, including a feeding barrel 1,

[0026] The bottom of the above-mentioned feeding barrel 1 protrudes outward, and an external thread is provided on the outside of the protruding body for connecting with the injection molding machine. And an annular second sealing ring 6 is installed inside the bottom connection port of the feeding barrel 1;

[0027] Inside the above-mentioned feeding barrel 1, a horizontal metal plunger 3 is provided. Above the above-mentioned metal plunger 3, an annular upper cover 2 with a hollow center is provided. Below the above-mentioned metal plunger 3, a disc-shaped lower cover 4 is provided. Both the upper cover 2 and the lower cover 4 are screwed to the metal plunger 3 in a spiral connection;

[0028] A first sealing ring 5 is installed outside the above-mentioned metal plunger 3.

[0029] The number of the above-mentioned first sealing rings 5 is two groups, and the above-mentioned first sealing rings 5 are symmetrically arranged up and down with respect to the center of the metal plunger 3.

[0030] The above-mentioned feeding barrel 1 is made of metal stainless steel plate.

[0031] In the existing silicone injection molding machine, its materials are generally in a liquid state. By squeezing the cover inside the feeding barrel by the equipment, the slow discharge of the liquid silicone material is realized and discharged by the injection pipe. However, since the existing feeding barrels are generally made of plastic, when the silicone material is discharged, the equipment squeezes the top cover of the barrel and applies pressure to the silicone material. The silicone material will apply pressure to the two peripheries, and at the same time, the plastic barrel has a certain ductility. At this time, material leakage and barrel scrapping are very likely to occur, and its service life is very short, generally scrapped in one week. When in use, the lower part of the feeding barrel 1 is sleeved on the feeding port of the micro-injection molding machine, and the feeding barrel 1 is rotated. The feeding barrel 1 is tightly connected to the micro-injection molding machine. The feeding barrel 1 is made of metal. It is not easy to deform when applying external pressure, has high precision, is not easy to leak glue, can bear greater pressure, and is convenient to replace, thus realizing low cost and high efficiency, and has a longer service life. And two groups of first sealing rings 5 are arranged outside the metal plunger 3. Cooperating with the second sealing ring 6 can ensure that the feeding barrel 1 has good sealing performance. In the actual use process, the glue material is not easy to leak from both sides of the metal plunger 3 when being extruded, and it is not easy to leak in the long-term use process.

[0032] Embodiment 2

[0033] This embodiment is an improvement made to Embodiment 1. Please refer to Figure 2 , specifically, annular grooves are provided on the upper and lower end faces of the above-mentioned metal plunger 3, and convex rings protruding outward are integrally provided on the opposite end faces of the upper cover 2 and the lower cover 4. The upper cover 2 and the lower cover 4 are tightly fitted with the grooves on the upper and lower end faces of the metal plunger 3 through the protruding convex rings.

[0034] The top of the above-mentioned feeding barrel 1 is open.

[0035] The convex rings on the opposite end faces of the upper cover 2 and the lower cover 4 are inserted into the grooves on the upper and lower sides of the metal plunger 3, so as to achieve the tight fit between the upper cover 2 and the lower cover 4 and the metal plunger 3. At the same time, the upper cover 2 and the lower cover 4 are connected to the metal plunger 3 by screws, which can ensure that they are an integral whole and achieve the purpose of moving forward and backward together. Furthermore, it can ensure that the upper cover 2, the metal plunger 3 and the lower cover 4 are in a concentric state during use, ensuring their normal operation.

[0036] During the long-term use process, once excessive wear occurs and the sealing performance is poor, it is necessary to replace the upper cover 2 and the lower cover 4. At this time, the metal plunger 3 is directly separated from the feed barrel 1, and then the upper cover 2 and the lower cover 4 can be disassembled by removing the screws, which is convenient for replacement. There is no need to replace the whole, avoiding waste of resources and effectively reducing costs.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding mechanism for a micro injection molding machine, characterized in that: It includes a feed barrel (1), The bottom of the feed barrel (1) protrudes outwards and an external thread is provided on the outside of the protrusion for connection with the injection molding machine, and an annular second sealing ring (6) is installed inside the bottom connection port of the feed barrel (1); A horizontal metal plunger (3) is arranged inside the feed barrel (1), an annular upper cover (2) with a hollow center is arranged above the metal plunger (3), a disc-shaped lower cover (4) is arranged below the metal plunger (3), and both the upper cover (2) and the lower cover (4) are spirally connected to the metal plunger (3) by screws; A first sealing ring (5) is installed on the outer side of the metal plunger (3).

2. A micro injection molding machine feeding mechanism according to claim 1, characterized in that: The first sealing rings (5) are provided in two groups, and the first sealing rings (5) are arranged symmetrically with respect to the center of the metal plunger (3).

3. A micro injection molding machine feeding mechanism according to claim 1, characterized in that: The upper and lower end surfaces of the metal plunger (3) are both provided with annular grooves, and the end surfaces opposite to each other of the upper cover (2) and the lower cover (4) are both integrally provided with raised rings protruding outwards, and the upper cover (2) and the lower cover (4) are tightly matched with the grooves of the upper and lower end surfaces of the metal plunger (3) through the raised convex rings.

4. A micro injection molding machine feeding mechanism according to claim 1, characterized in that: The feed barrel (1) is made of stainless steel plate.

5. A feeding mechanism for a micro injection molding machine according to claim 1, characterized in that: The top of the feed barrel (1) is open.

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