TWI659818B - Method for manufacturing angle type air tool housing - Google Patents

Abstract

An angle type air tool housing manufacturing method. The angle type air tool housing includes a hollow having a first end and a second end that are open and interconnected. A pipe body and an integral shell covering the hollow pipe body, the integral shell having a receiving chamber adjacent to the first end, an adjacent to the second end, and communicating with each other through the hollow pipe body and the receiving chamber The connected air passages and a pair of recesses that expose the hollow pipe body part form an angle type air tool housing integrally formed with the hollow pipe body, thereby achieving cost reduction and The effect of reducing weight.

Description

Method for manufacturing angle type air tool housing

The invention relates to a method for manufacturing an angle type air tool housing, in particular to an angle type air tool housing which is integrally formed by injection molding.

The machine tool particularly refers to a pneumatic machine tool, which uses air pressure to rotate a grinding assembly to grind an object.

In order to allow a gas pressure to pass through in a conventional pneumatic tool machine, an angle type air tool housing is generally preset with an air passage for a gas circulation to drive the grinding assembly.

As mentioned above, the air channel on the Angle type Air tool housing is not a linear channel, but a channel with a turning point, so it is subject to many restrictions in manufacturing.

The existing angle type air tool housing is mainly made by casting, especially the sand mold casting method. When the angle type air tool housing is ) After molding, the sand core is removed to form the air channel inside the Angle type Air tool housing.

However, the method of casting is not only costly and slow in production efficiency, but also the weight of the Angle type Air tool housing formed is very heavy. For operations that require long-term holding of the air tool housing As far as it is concerned, not only is it quite laborious, but long-term use will also cause occupational harm.

In view of this, a main object of the present invention is to provide an angle type air tool housing which is integrally formed by injection molding.

According to the above object, the present invention provides a method for manufacturing an angle type air tool housing, which includes the following steps: Step 1: Provide a central end having a first end and a second end which are open and interconnected with each other. An empty pipe body; step two: closing the first end and the second end of the hollow pipe body and placing them in a mold having a molding space, the mold having a pair for holding the hollow The clamping part of the pipe body allows the hollow pipe body to be positioned in the mold by using the pair of clamping parts; Step 3: Inject a plastic into the molding space of the mold, and fill the molding space with the plastic. Cover the hollow pipe body, and then solidify the plastic to form an integrated shell in the mold according to the shape of the molding space; and step 4: take out the integrated shell from the mold so that the integrated shells have each other A spaced-apart chamber and an air channel, the chamber is adjacent to the first end of the hollow pipe body, and the air channel is adjacent to the second end of the hollow pipe body, and then the first end is opened And the second end makes the capacity And the airway communicate with each other through the hollow tube body, and a pair of recessed portions are formed on the overall housing with respect to the pair of clamping portions, so that part of the hollow tube body is exposed to the pair of recessed portions and is formed in groups An angle type air tool housing formed integrally with the hollow pipe body.

In an embodiment, the hollow pipe body is further made of one of a metal material and a non-metal material.

In an embodiment, the first end of the hollow pipe body is further closed by a plug, and the second end is further closed by a thimble.

In an embodiment, the accommodating chamber further includes a first air chamber and a second air chamber communicating with each other, and the first end of the hollow pipe body is adjacent to the first air chamber.

In one embodiment, the overall housing is further formed with at least one exhaust groove communicating with the second air chamber, and the exhaust groove and the air passage are spaced apart from each other.

Through the above technical solutions, compared with the prior art, the present invention can effectively achieve the following beneficial effects:

1. Compared with the conventional technology, the angle type air tool housing of the present invention is formed by plastic injection molding on the outside of a hollow pipe body, so that the hollow pipe body and the integral housing are formed. Integrated molding, which can be used for mass production and improve production efficiency.

2. The whole casing in the present invention is formed of plastic, which is light in weight and can reduce the burden on the operator.

S001‧‧‧Step 1

S002‧‧‧Step 2

S003‧‧‧Step Three

S004‧‧‧Step Four

10‧‧‧Angle type Air tool housing

20‧‧‧ hollow tube

21‧‧‧ the first end

22‧‧‧ the second end

23‧‧‧pipe wall

30‧‧‧Mould

31‧‧‧forming space

32‧‧‧Clamping section

33‧‧‧ Embolism

34‧‧‧ thimble

40‧‧‧ overall shell

41‧‧‧Capacity Room

411‧‧‧First air chamber

412‧‧‧Second Air Chamber

42‧‧‧Airway

43‧‧‧ recess

44‧‧‧Exhaust trough

60‧‧‧Grinding components

61‧‧‧Grinding disc

70‧‧‧grip

Figure 1 is a flowchart of the steps of the present invention.

Figures 2-1 to 2-5 are schematic diagrams of the molding steps of the present invention.

FIG. 3 is a schematic perspective view of a hollow pipe body according to the present invention.

FIG. 4 is a schematic cross-sectional view of a hollow pipe body according to the present invention.

FIG. 5 is an exploded view of an angle type air tool housing in actual application according to the present invention.

FIG. 6 is a schematic perspective view of an angle type air tool housing of the present invention in practical application.

FIG. 7 is a schematic cross-sectional view of an angle type air tool housing of the present invention during practical application.

The detailed description and technical contents of the present invention are described below with reference to the drawings: please refer to FIGS. 1 to 2-5 at the same time. As shown in the figure, it can be clearly seen that a curved air tool according to the present invention The manufacturing method of the angle type air tool housing 10 includes the following steps:

Step one S001: Provide a hollow pipe body 20, please also cooperate with FIG. 3 to FIG. 4, in this embodiment, the hollow pipe body 20 is made of a metal material and has a zigzag shape. Or it is an S-shape. In this embodiment, the hollow tube body mainly adopts the Z-shape, and has a first end 21 and a second end 22 which are open and communicate with each other. In practical applications, the hollow pipe body 20 may also be made of a non-metallic material, which refers to a high-melting plastic material.

Step two S002: The first end 21 and the second end 22 of the hollow pipe body 20 are closed, and placed in a mold 30 having a molding space 31. The mold 30 has a pair of clamps therein. The clamping portion 32 of the hollow tube body 20 allows the hollow tube body 20 to be positioned on the mold 30 using the pair of clamping portions 32. In the present embodiment, the first end 21 of the hollow tube body 20 is mainly closed by a plug 33, the second end 22 is closed by a thimble 34, and the pair of clamping portions 32 are It is clamped on an outer pipe wall 23 of the hollow pipe body 20 so that the hollow pipe body 20 is positioned in the molding space 31 of the mold 30.

Step three S003: Inject a plastic into the molding space 31 of the mold 30, fill the molding space 31 and cover the hollow pipe body 20, and then solidify the plastic so that it will fit in the mold 30. The shape of the molding space 31 forms a whole casing 40. It is worth mentioning that when the hollow tube body 20 is made of a non-metallic material, a material with a high melting point must be selected to avoid melting of the hollow tube body 20 when the overall casing 40 is formed, in other words The material selected for the hollow tube body 20 must have a melting point higher than the melting point of the plastic.

Step 4: S004: Take out the overall casing 40 from the mold 30 so that the overall casing 40 has a container 41 and an air passage 42 spaced from each other, and the container 41 and the first end of the hollow tube body 20 21 is adjacent, and the air passage 42 is adjacent to the second end 22 of the hollow tube body 20, and then the first end 21 and the second end 22 are opened, and the first end 21 and the second end are opened. The opening of 22 means that the plug 33 and the thimble 34 closed at the first end 21 and the second end 22 are removed, so that the container 41 and the airway 42 pass through the hollow tube body 20 to each other. And a pair of recesses 43 are formed on the overall casing 40 with respect to the pair of clamping portions 32 so that part of the tube wall 23 of the hollow pipe body 20 is exposed in the pair of recesses 43 to form a group and An angle type air tool housing 10 is integrally formed with the hollow tube body 20, as shown in FIG. 5. However, in the present embodiment, when the integral casing 40 is formed, the container 41 is further divided into a first air chamber 411 and a second air chamber 412 which are in communication with each other, and the first air chamber 411 and the first end 21 of the hollow pipe body 20 are adjacent to each other and communicate with each other. In addition, in the present embodiment, the overall housing 40 is further formed with at least one exhaust groove 44. In this embodiment, two exhaust grooves 44 are provided as the main implementation mode. The two exhaust grooves 44 are mutually adjacent to each other. Spaced and annularly arranged around the air passage 42, and the two exhaust grooves 44 are adjacent to the second air chamber 412 and communicate with each other.

Please refer to FIG. 2-1 to FIG. 7 at the same time. The Angle type Air tool housing 10 obtained by the above manufacturing method includes a hollow pipe body 20 and an integral shell 40. The hollow pipe body 20 has a first end 21 and a second end 22. The first end 21 and the second end 22 communicate with each other. The integral shell 40 covers a part of the hollow pipe body 20, and the integral shell 40 has a receiving chamber 41 adjacent to the first end 21 and an air passage 42 adjacent to the second end 22, The container 41 and the air passage 42 are communicated with each other through the hollow tube body 20, and a pair of corresponding recesses 43 are formed on the overall housing 40 at positions relative to the pair of clamping portions 32, so that the portions A portion of a tube wall 23 of the hollow tube body 20 is partially exposed to the pair of concave portions 43. In this embodiment, the tube wall 23 exposed to the pair of recessed portions 43 is clamped by the pair of clamping portions 32 such that the integral housing 40 is formed by injection molding in the mold 30 and the pair is removed. The clamping portion 32 is formed after the hollow tube body 20 and the overall casing 40 can be formed integrally.

The Angle type Air tool housing 10 in the present invention is mainly used to set a grinding assembly 60 and connected to a pneumatic device (for the conventional technology, it is not included here). The handle 70 is a handle 70. The grinding component 60 is assembled in the receiving chamber 41, and a grinding disc 61 is pivotally connected to the grinding component 60 so that the grinding disc 61 extends to the outside of the receiving chamber 41 to align an object. (It is a conventional technique, not shown in the figure). The handle 70 is connected to the air passage 42 so that the air passage 42 and the aforementioned pneumatic device form a communication state.

When the handle 70 is used to control the pneumatic device to introduce a gas, the gas is passed through the air passage 42 and through the hollow tube body 20 into the first air chamber 411 of the container 41 to use the gas. The grinding assembly 60 is driven, and the grinding disc 61 is driven to perform a grinding operation on the object. When the gas drives the grinding assembly 60 through the first air chamber 411, the gas will be discharged outward from the two exhaust grooves 44 through the second air chamber 412, so as to make use of the flow of the gas to make the The grinding assembly 60 is maintained in a driven state.

Compared with the conventional technology, the angle type air tool housing 10 of the present invention is formed by plastic injection molding outside a hollow tube body 20 so that the hollow tube body 20 and the whole body The casing 40 is formed integrally, which can be used for mass production and improve production efficiency. In addition, the overall casing 40 is made of plastic, and has a light weight, which can reduce the burden on the operator.

Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Therefore, any modification and retouching made by those skilled in the art should be covered without departing from the spirit and scope of the present invention. In the present invention, the protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (5)

A method for manufacturing an angle type air tool housing includes the following steps: Step 1: Provide a hollow tube body with a first end and a second end that are open and interconnected; Step 2: Closing the first end and the second end of the hollow pipe body, and placing the same into a mold having a molding space, the mold having a pair of clamping portions for clamping the hollow pipe body, The hollow pipe body is positioned in the mold by using the pair of clamping portions; step three: a plastic is injected into the molding space of the mold, the plastic is filled in the molding space and covers the hollow pipe body Then, the plastic is cured to form an integrated shell in the mold according to the shape of the molding space; and step four: taking out the integrated shell from the mold so that the integrated shell has a container space and An air passage, and the chamber is adjacent to the first end of the hollow pipe body, and the air passage is adjacent to the second end of the hollow pipe body, and then the first end and the second end are opened so that Through the hollow between the chamber and the airway The bodies are communicated with each other, and a pair of recesses are formed on the overall housing with respect to the pair of clamping portions, so that a part of the hollow pipe body is exposed to the pair of recesses to form an integrally formed with the hollow pipe body Angle type Air tool housing. The method for manufacturing an angle type air tool housing according to claim 1, wherein the hollow pipe body is further selected from one of a metal material and a non-metal material production. The method for manufacturing an angle type air tool housing according to claim 2, wherein the first end of the hollow pipe body is further closed by a plug, and the second end is further utilized by A thimble is closed. The method for manufacturing an angle type air tool housing as described in claim 1, wherein the container further includes a first air chamber and a second air chamber which are interconnected with each other, and the middle The first end of the empty pipe body is adjacent to the first air chamber. The method for manufacturing an angle type air tool housing according to claim 4, wherein the overall housing further has at least one exhaust groove connected to the second air chamber, and the exhaust The groove is spaced from the airway.