Micro injection molding machine MIM injection molding check valve

Abstract

The utility model relates to the technical field of injection check valves, in particular to a micro injection molding machine MIM injection check valve which comprises a sol tube, the surface of the sol tube is in sliding connection with a T-shaped non-return wear-resistant part, the non-return wear-resistant part is made of wear-resistant steel, the surface of the non-return wear-resistant part is fixedly connected with two connecting rods, and the connecting rods are connected with the sol tube. Two connecting grooves are formed in the surface of the sol tube, the sizes of the two connecting grooves are matched with the sizes of the connecting rods, the surfaces of the two connecting rods are fixedly connected with guide blocks, and the cross section of each guide block is in the shape of an isosceles trapezoid. According to the non-return wear-resistant part, partial area of an original sol tube is arranged into the T-shaped non-return wear-resistant part, the non-return wear-resistant part can be conveniently replaced, meanwhile, the replacement cost is reduced, the practicability of the non-return valve is improved, and the service life is greatly prolonged due to the fact that the non-return wear-resistant part is made of wear-resistant steel with good wear-resistant performance.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding check valves, in particular to a micro injection molding check valve for a MIM injection molding machine. Background Art

[0002] The MIM injection check valve is a key component used in the metal injection molding process. MIM stands for metal injection molding, which is a process of mixing metal powder with plastic powder and then injecting it into the mold. In this process, in order to ensure that the metal powder and plastic powder do not mix with each other during the injection process, a check valve is required to prevent the plastic from flowing back into the barrel of the metal injection molding machine.

[0003] The above-mentioned and existing related technologies often have the following defects: when using the check valve to prevent backflow, the port of the check valve will be damaged due to long-term wear, and the check valve needs to be replaced, which leads to the problem of short service life of the check valve and high replacement cost.

[0004] Therefore, we propose a micro injection molding check valve for MIM injection molding machines. Utility Model Content

[0005] The utility model aims to provide a micro injection molding check valve for a MIM injection molding machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro injection molding machine MIM injection molding check valve, including a sol tube, the surface of which is slidably connected with a check wear-resistant part, the check wear-resistant part is "T" shaped, and the check wear-resistant part is made of wear-resistant steel.

[0007] The effect achieved by the above components is: setting part of the original sol tube into a "T"-shaped non-return wear-resistant part, which can be easily replaced, while reducing the replacement cost and increasing the practicality of the non-return valve. Furthermore, since the non-return wear-resistant part is made of wear-resistant steel with good wear resistance, its service life is greatly improved.

[0008] Preferably, two connecting rods are fixedly connected to the surface of the anti-return wear-resistant part, and two connecting grooves are provided on the surface of the melt hose, and the sizes of the two connecting grooves are adapted to the sizes of the connecting rods.

[0009] The effect achieved by the above components is: first, the connecting rod and the connecting groove are connected together, at which time the initial limiting of the anti-return wear-resistant part is completed, and the anti-return wear-resistant part will not easily loosen and fall due to the friction generated between the connecting rod and the connecting groove.

[0010] Preferably, guide blocks are fixedly connected to the surfaces of the two connecting rods, and the cross-section of the guide blocks is an isosceles trapezoid.

[0011] The effect achieved by the above components is that: since the guide block is in the shape of an isosceles trapezoid, it can help the staff to quickly dock the connecting rod inside the connecting groove, which facilitates the docking and use of the connecting rod.

[0012] Preferably, inner walls of the two connecting grooves are both glued with anti-slip rings, and the anti-slip rings are made of rubber.

[0013] The effect achieved by the above components is: since the anti-slip ring is made of rubber, it can increase the friction between it and the arc surface of the connecting rod, further improve the stability of the auxiliary limit of the connecting rod, and the anti-reverse wear-resistant part will not fall off.

[0014] Preferably, a wear-resistant layer is fixedly connected to the inner wall of the anti-return wear-resistant part, and the wear-resistant layer is an aluminum oxide coating.

[0015] The effect achieved by the above components is: since the wear-resistant layer is an aluminum oxide coating, it has good wear resistance, and when it contacts and generates friction with the anti-return ball, it can further improve the wear resistance of the anti-return wear-resistant part.

[0016] Preferably, four anti-skid grooves are provided on the surface of the anti-reverse wear-resistant part, the four anti-skid grooves are all in annular shape, and the four anti-skid grooves are linearly arrayed on the arc surface of the anti-reverse wear-resistant layer.

[0017] The effect achieved by the above components is that the anti-slip groove can increase the friction between the staff and the anti-reverse wear-resistant parts, thereby making it easier for the staff to remove the anti-reverse wear-resistant parts from between the melt hoses.

[0018] Preferably, a series ring is fixedly connected to the surface of the anti-return wear-resistant part, and the series ring is slidably connected to the melt hose.

[0019] The effect achieved by the above components is: the series ring can be connected to the connecting port of the sol tube, at this time a bridge-like part can be built between the sol tube and the anti-reverse wear-resistant part, and the transmitted MIM will not leak to the connecting position between the sol tube and the anti-reverse wear-resistant part, which facilitates the connection work between the sol tube and the anti-reverse wear-resistant part.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model can conveniently replace a part of the original sol tube by configuring the part to be a "T"-shaped anti-return wear part, while reducing the replacement cost and increasing the practicality of the anti-return valve. Furthermore, since the anti-return wear part is made of wear-resistant steel with good wear resistance, the service life is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the sol tube in the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model's stop reverse wear-resistant part;

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the utility model's stop reverse wear-resistant part.

[0026] In the figure: 1. melt hose; 2. anti-reverse wear-resistant part; 3. connecting rod; 4. connecting groove; 5. guide block; 6. anti-slip ring; 7. wear-resistant layer; 8. anti-slip groove; 9. series ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4The utility model provides a technical solution: a micro-injection molding machine MIM injection non-return valve, including a sol tube 1, the surface of the sol tube 1 is slidably connected with a non-return wear-resistant part 2, the non-return wear-resistant part 2 is in a "T" shape, and the non-return wear-resistant part 2 is made of wear-resistant steel. The part of the original sol tube 1 is set as a "T"-shaped non-return wear-resistant part 2, which can be easily replaced, while reducing the replacement cost and increasing the practicality of the non-return valve. Furthermore, since the non-return wear-resistant part 2 is made of wear-resistant steel with good wear resistance, the service life is greatly improved. Two connecting rods 3 are fixedly connected to the surface of the non-return wear-resistant part 2, and two connecting grooves 4 are provided on the surface of the sol tube 1. The sizes of the two connecting grooves 4 are both compatible with the sizes of the connecting rod 3. The connecting rod 3 and the connecting groove 4 are first connected together. At this time, the initial limit of the non-return wear-resistant part 2 is completed, and the non-return wear-resistant part 2 will not be easy to loosen and fall due to the friction generated between the connecting rod 3 and the connecting groove 4. The surfaces of the two connecting rods 3 are fixedly connected with guide blocks 5, and the cross-section of the guide blocks 5 is an isosceles trapezoid. Since the guide blocks 5 are in the shape of an isosceles trapezoid, it can help the staff to quickly dock the connecting rods 3 inside the connecting grooves 4, which is convenient for the docking and use of the connecting rods 3. The inner walls of the two connecting grooves 4 are glued with anti-skid rings 6, and the anti-skid rings 6 are made of rubber. Since the anti-skid rings 6 are made of rubber, the friction between the anti-skid rings and the arc surface of the connecting rods 3 can be increased, and the stability of the auxiliary limit of the connecting rods 3 is further improved, and the anti-reverse wear-resistant part 2 will not fall. The inner wall of the anti-reverse wear-resistant part 2 is fixedly connected with a wear-resistant layer 7, and the wear-resistant layer 7 is an aluminum oxide coating. Since the wear-resistant layer 7 is an aluminum oxide coating, it has good wear resistance. When it contacts and generates friction with the anti-reverse ball, it can further improve the wear-resistant effect of the anti-reverse wear-resistant part 2. The surface of the anti-reverse wear-resistant part 2 is provided with four anti-skid grooves 8, all of which are in the shape of circular rings. The four anti-skid grooves 8 are linearly arrayed on the arc surface of the anti-reverse wear-resistant layer 7. The anti-skid grooves 8 can increase the friction between the staff and the anti-reverse wear-resistant part 2, thereby facilitating the staff to take the anti-reverse wear-resistant part 2 out from between the sol tube 1. The surface of the anti-reverse wear-resistant part 2 is fixedly connected with a series ring 9, which is slidably connected to the sol tube 1. The series ring 9 can be connected to the connection port of the sol tube 1. At this time, a part similar to a bridge can be built between the sol tube 1 and the anti-reverse wear-resistant part 2, and the transmitted MIM will not leak to the connection position between the sol tube 1 and the anti-reverse wear-resistant part 2, which facilitates the connection work between the sol tube 1 and the anti-reverse wear-resistant part 2.

[0029] Working principle: After the sol tube 1 is used for a long time, the anti-reverse wear-resistant part 2 can be replaced. At this time, the sol tube 1 is first disconnected from the mounting seat (the part connected to the sol tube 1 on the micro injection molding machine). The staff can then remove the anti-reverse wear-resistant part 2 from the surface of the sol tube 1. An anti-skid groove 8 is provided on the arc surface of the anti-reverse wear-resistant part 2. The anti-skid groove 8 can increase the friction between the staff and the anti-reverse wear-resistant part 2, thereby facilitating the staff to remove the anti-reverse wear-resistant part 2 from the sol tube 1. The staff can then replace the new anti-reverse wear-resistant part 2. First, disconnect the sol tube 1 from the mounting seat (the part connected to the sol tube 1 on the micro injection molding machine). The connecting rod 3 is butted against the connecting groove 4, at which time the initial limit of the anti-return wear-resistant part 2 is completed. The anti-return wear-resistant part 2 is not easy to loosen and fall due to the friction generated between the connecting rod 3 and the connecting groove 4. There is a guide block 5 on the surface of the connecting rod 3. Since the guide block 5 is in the shape of an isosceles trapezoid, it can help the staff to quickly butt the connecting rod 3 into the inside of the connecting groove 4, which is convenient for the butt connection of the connecting rod 3. There is an anti-slip ring 6 on the inner wall of the connecting groove 4. Since the anti-slip ring 6 is made of rubber, it can increase the friction between the circular arc surface of the connecting rod 3, further improving the auxiliary force of the connecting rod 3 The stability of the limit is enhanced, and the anti-return wear-resistant part 2 will not fall off. After the connecting rod 3 is connected to the connecting groove 4, the series ring 9 can be connected to the connecting port of the sol tube 1. At this time, a bridge-like part can be built between the sol tube 1 and the anti-return wear-resistant part 2, so that the transmitted MIM will not leak to the connection position between the sol tube 1 and the anti-return wear-resistant part 2, which facilitates the connection work between the sol tube 1 and the anti-return wear-resistant part 2. The sol tube 1 can be further installed and connected with the mounting seat, and then it can be used. The "V"-shaped surface of the inner wall of the anti-return wear-resistant part 2 will contact the anti-return ball (micro The spherical part used for anti-return on the injection molding machine) produces friction, and there is a wear-resistant layer 7 on the inner wall of the anti-return wear-resistant part 2. Since the wear-resistant layer 7 is an aluminum oxide coating, it has good wear resistance. When it contacts and generates friction with the anti-return ball, the wear resistance of the anti-return wear-resistant part 2 can be further improved. By setting a part of the original sol tube 1 into a "T"-shaped anti-return wear-resistant part 2, it can be easily replaced, while reducing the replacement cost and increasing the practicability of the check valve. Furthermore, since the anti-return wear-resistant part 2 is made of wear-resistant steel with good wear resistance, the service life is greatly improved.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. 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 terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A micro injection molding machine (MIM) injection molding check valve, comprising a sol tube (1), characterized in that: The surface of the sol tube (1) is slidably connected with a non-reverse wear-resistant part (2), the non-reverse wear-resistant part (2) is in a "T" shape, and the non-reverse wear-resistant part (2) is made of wear-resistant steel.

2. A micro injection molding MIM injection molding check valve according to claim 1, characterized in that: Two connecting rods (3) are fixedly connected to the surface of the anti-return wear-resistant part (2), and two connecting grooves (4) are provided on the surface of the sol tube (1), and the sizes of the two connecting grooves (4) are both compatible with the sizes of the connecting rods (3).

3. A micro injection molding check valve for MIM injection molding according to claim 2, characterized in that: The surfaces of the two connecting rods (3) are both fixedly connected with guide blocks (5), and the cross-section of the guide blocks (5) is in the shape of an isosceles trapezoid.

4. A micro injection molding check valve for MIM injection molding according to claim 2, characterized in that: The inner walls of the two connection grooves (4) are both glued with anti-skid rings (6), and the anti-skid rings (6) are made of rubber.

5. A micro injection molding check valve for MIM injection molding according to claim 1, characterized in that: The inner wall of the anti-return wear-resistant part (2) is fixedly connected with a wear-resistant layer (7), and the wear-resistant layer (7) is an aluminum oxide coating.

6. A micro injection molding check valve for MIM injection molding according to claim 1, characterized in that: The surface of the anti-reverse wear-resistant part (2) is provided with four anti-skid grooves (8), the four anti-skid grooves (8) are all in annular shape, and the four anti-skid grooves (8) are all arranged in a linear array on the arc surface of the anti-reverse wear-resistant layer (7).

7. A micro injection molding check valve for MIM injection molding according to claim 1, characterized in that: A series ring (9) is fixedly connected to the surface of the anti-return wear-resistant part (2), and the series ring (9) is slidably connected to the sol tube (1).

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