Manufacturing tool of integral needle core for warp knitting machine

Abstract

The utility model provides a preparation tool of an integral needle core for a warp knitting machine, which comprises a shell (1), and is characterized in that an insert component (2) is inserted in the shell (1), a needle core base placing groove (3) is formed between the insert component (2) and the inner wall of the shell (1), an injection end cover (4) correspondingly matched with the insert component (2) is connected to the open end of the shell (1), and the injection end cover (4) is connected with the needle core base placing groove (3). The injection end cover (4) completely covers the needle core base placing groove (3), and an injection hole (4a) is formed in the injection end cover (4). The needle core of the warp knitting machine is simple in structure and convenient to use, the traditional production process is changed, the production precision of the needle core of the warp knitting machine is effectively improved, the production efficiency is improved, the overall strength of combination of the needle core of the warp knitting machine and the base is improved, and the service life of the needle core of the warp knitting machine is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metal injection molding, and specifically relates to a preparation tool for an integral needle core used in a warp knitting machine. Background Art

[0002] The needle core used in a warp knitting machine is one of the equipment parts with a very large consumption in the warp knitting machine, and it is also one of the core components of the warp knitting machine, having a huge market in China. The current needle cores for warp knitting have the following problems to be solved urgently: The current needle core manufacturing process, such as the prior art with the application number 202121624926.X: mostly uses the method of welding the needle core base and the needle chip together by casting with tin wax. During the process of tin wax casting, it is extremely easy to have the situation of incomplete casting in the sealed casting area and the needle chip being exposed. Moreover, single needle core casting is carried out, resulting in a relatively high overall manufacturing cost and a too low qualified product rate.

[0003] Metal injection molding is a molding method that injects a plastic mixture of metal powder and its binder into a mold. First, the selected powder and the binder are mixed, then the mixture is granulated and injection molded through a mold into the required shape. Through the metal injection molding process, the production efficiency and precision of products can be effectively improved. Therefore, developing a method to produce an integral needle core through the metal injection molding process has become a way to improve production efficiency and product precision. So, the company urgently needs a preparation tool for the production of an integral needle core used in a warp knitting machine. Summary of the Utility Model

[0004] The utility model aims to overcome the deficiencies in the prior art and provides a preparation tool for an integral needle core used in a warp knitting machine.

[0005] The present application provides the following technical solutions:

[0006] A preparation tool for an integral needle core used in a warp knitting machine, which includes a shell. Its characteristic lies in that: An insert component is inserted into the shell. A needle core base placement groove is formed between the insert component and the shell. At the open end of the shell, an injection end cover corresponding to and cooperating with the insert component is connected. The injection end cover completely covers the needle core base placement groove and is provided with an injection hole thereon; The insert component includes a pair of insert fixing plates. On the insert fixing plates, a first mold groove corresponding to the outer shape of the needle core is provided. A rectangular groove is communicated below the needle core outer shape groove. A group of insert pieces are connected between the two insert fixing plates. On one side surface of each insert piece, a second mold groove corresponding to the outer shape of the needle core is provided. A notch corresponding to the rectangular groove is provided on one side of the second mold groove. The notch and the rectangular groove form the needle core base placement groove.

[0007] Based on the above technical solutions, the following further technical solutions may be available:

[0008] An exhaust groove communicating with the first and second type grooves is provided on the housing.

[0009] A type groove communicating with the placement groove of the needle core base is provided on the injection end cover, and the injection hole communicates with the type groove. A positioning rib corresponding to and cooperating with the housing and the insert assembly is provided on the outer wall of the injection end cover above the type groove.

[0010] Advantages of the utility model:

[0011] The utility model has a simple structure and is convenient to use. It changes the traditional production process, effectively improves the precision of the production of the warp knitting machine needle core, improves the production efficiency, increases the overall strength of the combination of the warp knitting machine needle core and the base, and improves the service life of the warp knitting machine needle core. Description of the drawings

[0012] Figure 1 is the overall structural schematic diagram after the assembly of the utility model;

[0013] Figure 2 is Figure 1 the schematic diagram when the insert assembly, the injection end cover and the housing are not installed in ;

[0014] Figure 3 is Figure 1 the overall structural schematic diagram of the insert assembly in ;

[0015] Figure 4 is Figure 3 the schematic diagram when the insert fixing plate and the insert piece in the insert assembly are separated in ;

[0016] Figure 5 is Figure 4 the schematic diagram of the insert piece in ;

[0017] Figure 6 is Figure 1 the structural schematic diagram of the injection end cover in ;

[0018] Figure 7 is the partial structural schematic diagram of the upper end part after the insert assembly is assembled;

[0019] Figure 8 is the partial structural schematic diagram of the upper end part of the housing when the injection end cover is not installed;

[0020] Figure 9 is the schematic diagram of the integral needle core produced by using the preparation tooling provided by the utility model. Detailed implementation manners

[0021] As Figure 1-8 , a preparation tooling for an integral needle core for a warp knitting machine, which includes a housing 1 with an open upper end. A notch 1a is provided on one side of the open end of the housing 1, and an injection end cover 4 is connected to the notch 1a through a fixing pin 1b.

[0022] A slot is provided on the housing 1, and an insert component 2 is inserted into the slot. The insert component 2 includes a pair of insert fixing plates 2a. A first groove 12a corresponding to the shape of the core is provided on the upper surface of the insert fixing plate 2a. A rectangular groove 12b is communicated below the first groove 12a. A group of inserts 2b is provided between the two insert fixing plates 2a.

[0023] On one side surface of the upper part of each insert 2b, a second groove 112a corresponding to the shape of the core is provided. On one side below the second groove 112a, a notch 112b corresponding to the shape of the rectangular groove 12b is provided. The two insert fixing plates 2a and a group of inserts 2b are connected and fixed together by a first positioning pin 2c and bolts 2d to form the insert component 2.

[0024] The rectangular grooves 12b and the notches 112b on the two insert fixing plates 2a and a group of inserts 2b connected together form a first notch groove 2h lacking one side wall. On the inner wall of the slot of the housing 1, a second notch groove 1b lacking the other side wall corresponding to the first notch groove 2h is provided. The core base placement groove 3 is formed by the combination of the first notch groove 2h and the second notch groove 1b.

[0025] After the installed insert component 2 is inserted into the housing 1, the insert component 2 and the housing 1 are connected together by a second positioning pin 2e.

[0026] An exhaust groove 5 communicating with the first groove 12a and the second groove 112a is provided on the end surface on the other side of the open end of the housing 1. So that after the metal powder and its binder are injected into the housing, the air in the housing is discharged through the exhaust groove, avoiding the appearance of air bubbles in the integrally formed core during shaping.

[0027] A groove 4a communicating with the core base placement groove 3 is provided on the injection end cap 4. The injection hole 4c communicates with the groove 4a. A positioning rib 4b is provided on the outer wall of the injection end cap 4 above the groove 4a. Corresponding grooves are provided on the outer wall of the notch 1a and on the insert fixing plate 2a and a group of inserts 2b. When the insert component 2 and the housing 1 are installed and fixed, all the grooves gather to form a positioning groove 6 corresponding to the positioning rib 4b.

[0028] During use, first connect the insert component 2 to the housing 1. Then place the pre-prepared metal needle core base 8 in the needle core base placement groove 3. Next, snap the positioning rib 4b of the injection end cap 4 into the positioning groove 6. Then connect the injection end cap 4 to the housing 1 in place through a pair of connecting pins 7. Thus, the installation of the entire preparation tooling is completed. Then place the tooling in an injection molding machine to inject the mixed material. Then take the tooling out of the injection molding machine and disassemble the tooling to obtain the integral needle core 10. Then perform manual trimming to remove the waste material 10a at the tip of the needle. This waste material is formed after the mixed material enters the exhaust groove.

Claims

1. An overall needle core preparation tool for a warp knitting machine, which comprises a housing (1), and is characterized in that: An insert component (2) is inserted into a housing (1). A core base placement groove (3) is formed between the insert component (2) and the housing (1). At the open end of the housing (1), an injection end cap (4) corresponding to and mating with the insert component (2) is connected. The injection end cap (4) completely covers the core base placement groove (3) and is provided with an injection hole (4c) thereon. The insert component (2) includes a pair of insert fixing plates (2a). A first mold cavity (12a) corresponding to the core shape is provided on the insert fixing plates (2a). A rectangular groove (12b) communicates with the lower part of the first mold cavity (12a). A group of insert pieces (2b) are connected between the two insert fixing plates (2a). A second mold cavity (112a) corresponding to the core shape is provided on one side surface of each insert piece (2b). A notch (112b) corresponding to the rectangular groove (12b) is provided on one side of the second mold cavity (112a). The notch (112b) and the rectangular groove (12b) form the core base placement groove (3).

2. The preparation tooling for an integral needle core used in a warp knitting machine according to claim 1, characterized in that: An exhaust groove (5) communicating with the first mold cavity (12a) and the second mold cavity (112a) is provided on the housing (1).

3. The preparation tooling for an integral needle core used in a warp knitting machine according to claim 1, characterized in that: A mold cavity (4a) communicating with the core base placement groove (3) is provided on the injection end cap (4). The injection hole (4c) communicates with the mold cavity (4a). A positioning rib (4b) corresponding to and mating with the housing (1) and the insert component (2) is provided on the outer wall of the injection end cap (4) above the mold cavity (4a).

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