KR101533728B1 - Mesh forming unit and insert injection molding apparatus having it - Google Patents

Abstract

The present invention relates to an insert injection apparatus comprising a mesh forming unit capable of bending a flat mesh into a ring shape. The mesh forming unit includes: a tong-shaped fixing portion for holding and fixing a flat mesh; a pair of pressure means located on both sides of the fixing portion, respectively, for being in contact with surfaces of the mesh to pressure the same; and a moving means for moving the pressure means in a longitudinal direction of the mesh. In addition, the insert injection apparatus for manufacturing a mesh-integrated filter comprises: a supply unit for supplying a flat mesh wound on a roll; a cutting unit for cutting the flat mesh supplied from the supply unit into a predetermined size; a mesh forming unit for bending the flat mesh into a ring shape; an injection unit for performing an insert injection on the ring-shaped mesh; a first transfer unit for transferring the ring-shaped mesh formed on the mesh forming unit into the injection unit; and a second transfer unit for discharging a mesh-integrated filter manufactured in the injection unit to the outside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mesh forming unit and an insert injection apparatus including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mesh forming unit and an insert injection apparatus including the same, and more particularly, to an insert injection apparatus including a mesh forming unit that bends a flat mesh in an annular shape.

The transmission is a device that converts the power generated by the engine into the required torque according to the speed and transmits it. The transmission is divided into a manual transmission in which the shifting process is manually performed by the driver, and an automatic transmission in which the shifting process is automatically performed by a predetermined pattern. The automatic transmission includes a torque converter, an operating mechanism, a planetary gear device, a hydraulic control mechanism, an electronic control device, and the like so that the shifting process can be automatically performed. At this time, the hydraulic control mechanism is provided with a pressure regulating valve mechanism for keeping the pressure in the automatic transmission constant.

The solenoid valve is one of the valve mechanisms for pressure control described above. Solenoid valves are divided into spool type, ball type, poppet type, etc. according to the internal structure. A spool type solenoid valve is disclosed in the prior art document 1 (Korean Patent Registration No. 10-0819203, Mar. 27, 2008). The solenoid includes a solenoid which is inserted or protruded depending on whether a power source is applied or not, a holder coupled to the solenoid and formed with a fluid passage, and a spool installed inside the holder and controlled by the solenoid, . The solenoid includes a bobbin having a coil wound thereon for generating magnetic force, a core and a yoke respectively coupled to both ends of the bobbin, a plunger movably installed inside the core and the yoke, and a rod for moving the spool when the plunger is moved .

On the other hand, a port connected to the fluid transfer path is formed on the outer circumferential surface of the holder, and a filter is installed around the port to prevent foreign matter from entering. The structure of the filter is composed of an annular body surrounding the outer peripheral surface of the holder and a mesh installed in the entrance and exit of the body.

Conventionally, a body and a mesh were manufactured separately when a filter was produced, and then a mesh was attached to the entrance and exit of the body. However, the filter is so small that it is not easy to attach the mesh to the body, and it is more difficult to attach the mesh to the correct location. Therefore, the productivity of the filter is deteriorated and the probability of occurrence of defective products is also high.

In order to solve the above-mentioned problem, a mold for integrally molding a mesh has been developed. Prior Art Document 2 (Korean Patent Registration No. 10-0909682, Jul. 21, 2009) discloses a mold for forming an oil filter including an upper mold having an upper core and a lower mold having a lower core.

In order to produce the mesh-integrated filter using the above-described oil filter molding die, the bending process for bending the planar mesh in an annular shape must be preceded. Conventionally, the bending of the mesh has to be manually performed by the operator, and the worker has to insert the annular bent mesh into the mold. Therefore, the productivity is lowered and the working efficiency is lowered.

Korean Registered Patent No. 10-0819203 (Mar. 27, 2008) Korean Registered Patent No. 10-0909682 (2009.07.21.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a mesh forming unit for bending a planar mesh in an annular shape.

In addition, the present invention can automatically carry out a process of cutting a flat plate mesh to a predetermined length and feeding it, a process of bending a mesh annularly, a process of inserting an annular mesh into a mold, and a process of inserting an insert into a die having a mesh inserted therein The present invention is directed to providing an insert injection apparatus having an injection opening.

In order to achieve the above object, a mesh forming unit according to the present invention comprises: a clamping-type fixing unit for clamping and fixing a mesh of a flat plate; pressing means located on both sides of the fixing unit and contacting and pressing both sides of the mesh; And moving means for moving the pair of pressing means in the longitudinal direction of the mesh.

According to the above-described structure of the present invention, when the pair of pressing means is moved in a direction away from each other, the mesh is pulled by the pressing means, rolled in an annular shape, and wound around the fixing portion.

The pressing means may include a first pressing roller contacting the one surface of the mesh and a second pressing roller contacting the other surface of the mesh. At this time, the first pressure roller and the second pressure roller may be arranged in the longitudinal direction of the mesh to press the mesh, or may be arranged in an oblique direction to press the mesh.

The pressing means may be composed of a pressing roller contacting one surface of the mesh and a pressing plate contacting the other surface of the mesh. At this time, a compression groove is formed on the pressure plate so that a part of the pressure roller can be inserted.

The fixing portion is composed of a support base and a press pin movably provided on one side of the support base. At this time, grooves are formed on both sides of the tip of the support so that the pressing means can move to a position close to the push pins.

According to another aspect of the present invention, there is provided an insert injection apparatus for manufacturing a mesh-integrated filter, comprising: a supply unit for supplying a mesh of a flat plate wound on a roll; a cutting unit for cutting the flat mesh supplied from the supply unit to a predetermined size; A first transfer unit for transferring the annular mesh formed in the mesh forming unit to the injection unit, and a second transfer unit for transferring the annular mesh formed in the mesh forming unit to the injection unit, And a second conveying unit for discharging the mesh-integrated filter produced in the second conveying unit to the outside.

In the mesh forming unit according to the present invention constructed as described above, the production amount can be increased by preceding the bending processing for bending the planar mesh in an annular shape, and the productivity can be improved by minimizing the generation of defective products.

In addition, the present invention provides an insert injection apparatus for manufacturing a mesh-integrated filter, comprising: a process of cutting a flat plate mesh to a predetermined length and feeding it, a process of bending a mesh annularly, a process of inserting an annular mesh into a metal mold, So that the productivity can be improved.

1 is a perspective view of a general mesh integral filter.
2 is a perspective view of a mesh-integrated filter insert injection apparatus according to an embodiment of the present invention;
3 is an enlarged view of a part of a mesh-integrated filter insert injection apparatus according to an embodiment of the present invention;
4 is a view showing a mesh forming unit of a mesh-integrated filter insert injection apparatus according to an embodiment of the present invention.
Fig. 5 is a front view of the mesh forming unit shown in Fig. 4; Fig.
6 to 8 illustrate a mesh forming process using a mesh forming unit according to an embodiment of the present invention.
9 is a view showing a mesh forming unit according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The mesh-integrated filter (10) is installed in a holder of a solenoid valve and serves to prevent foreign matter from flowing into the holder in the course of fluid entering and exiting. As shown in Fig. 1, the mesh-integrated filter 10 includes a C-shaped body 12 surrounding an outer peripheral surface of a holder. At both ends of the body 12, a locking protrusion 14 is formed so as to be fixed to the holder. The body 12 is formed with an inlet / outlet hole 16 for allowing fluid to flow in and out, and a reinforcing member 18 is formed at an end of the inlet / outlet hole 16. A mesh (19) for filtering foreign matter is attached to the inside of the body (12) integrally with the body (12).

The mesh-integrated filter 10 having the above-described structure is installed so as to enclose each port formed on the outer circumferential surface of the holder, and filters out the foreign matter entering the mesh 19 in the course of the fluid entering and exiting through the port when operating the solenoid valve.

2 and 3, the insert injection apparatus 1 for manufacturing the mesh-integrated filter (10 in Fig. 1) comprises a supply unit 100 for supplying a mesh 19, A mesh forming unit 300 for processing the mesh 19, an injection unit 400 for injecting inserts to the mesh 19, a mesh unit 19 for cutting the mesh 19, And a transfer unit (500, 600) for transferring the mesh-integrated filter (10 in Fig. 1).

The supply unit 100 is means for supplying the mesh 19, which is the insert metal of the mesh-integrated filter 10. The supply unit 100 of the present embodiment is configured to include reels 110 and 120 in which the mesh 19 is wound in a roll shape so as to continuously supply the mesh 19. In particular, a pair of reels 110 and 120 wound in a roll shape are provided so that a pair of meshes 19 can be simultaneously formed.

The cutting unit 200 is means for cutting the planar mesh 19 continuously supplied from the supply unit 100 to a predetermined size. The cutting unit 200 is composed of a pair of horizontally spaced pairs so as to cut the mesh 19 supplied from the pair of reels 110 and 120, respectively. At this time, since the cutting unit 200 has the same structure as a general cutting unit using a cutter or a laser, a detailed description thereof will be omitted.

The mesh forming unit 300 is a means for annularly bending a flat plate mesh 19 cut to a predetermined size through the cutting unit 200. The mesh forming unit 300 includes a fixing portion 310 for fixing the flat plate mesh 19 and a pressing means 320 and a moving means 330 for pulling the plain plate mesh 19 into an annular shape .

The injection unit 400 is means for injecting inserts using the annular mesh 19 formed in the mesh forming unit 300 as an insert metal. Since the injection unit 400 has the same structure as a general injection unit using a mold, a detailed description thereof will be omitted.

The transfer units 500 and 600 include a first transfer unit 500 for transferring the annular mesh 19 formed in the mesh forming unit 300 to the injection unit 300 and a second transfer unit 500 for transferring the mesh- And a second transfer unit 600 for discharging the filter 10 to the outside. The first transfer unit 500 and the second transfer unit 600 reciprocate along one guide rail 700 while the first transfer unit 500 is reciprocated along the guide rail 700 between the mesh forming unit 300 and the injection unit 300, and the second transfer unit 600 reciprocates between the injection unit 300 and the discharge port 800.

Referring to FIGS. 4 and 5, the mesh forming unit 300 will be described in more detail below.

The fixing portion 310 of the mesh forming unit 300 is a portion that holds and fixes the flat plate mesh 19 cut to a certain size through the cutting unit (200 in FIG. 3). The fixing unit 310 is installed in the first transfer unit (500 in FIG. 3) and is movable in the direction close to the cutting unit 200 or in the opposite direction. The flat plate mesh 19 discharged through the cutting unit 200 is fixed to the fixing portion 310 and moved between the pair of pressing means 320. [

The fixing part 310 includes a first fixing part 310a and a third fixing part 310c provided on the first plate 320 and a second fixing part 310b fixed to the second plate 330, 4 fixing portion 310d. The first fixing part 310a and the third fixing part 310c are operated to hold and fix the pair of meshes 19 in the state where the first plate 320 is moved to the right, The second fixing part 310b and the fourth fixing part 310d are operated to hold and fix the pair of meshes 19 in a state where the first fixing part 320 moves to the left. When the four fixing portions 310a to 310d are used, the flat plate mesh 19 continuously fed through the cutting unit 200 can be continuously formed.

The fixing unit 310 includes a cylindrical body 312 provided on the first or second plate 320 or 330, a support 314 coupled to the inside of the body 312, And a push pin 316 movably installed on the upper portion. At this time, the support base 314 is formed into a columnar shape having grooves 318 on both sides of the tip, that is, a columnar shape having a cross section of a Ginkgo leaf shape. When the groove 318 is formed at the tip of the support base 314 as described above, the pressing means 320 can move to a position close to the pressing pin 316, so that the flat plate mesh 19 can be formed more reliably into an annular shape can do.

The pressurizing means 320 is a portion that allows the mesh 19 to be annularly rolled when the mesh 19 is pulled by contacting and pressing the upper and lower surfaces of the mesh 19, respectively. The pressing means 320 is composed of a pair, that is, four in total, located on both sides of the fixing portion 310.

The pressing means 320 according to the present embodiment includes a first pressing roller 324 which is fixed to the block 322 and contacts the lower surface of the mesh 19, A second pressing roller 326 contacting the upper surface of the block 322 and an actuator 328 provided below the block 322 to move the second pressing roller 326. At this time, the first pressure roller 324 and the second pressure roller 326 may be arranged in the horizontal direction to press the mesh 19 or be disposed in an oblique direction to press the mesh 19. 7, when the first pressure roller 324 and the second pressure roller 326 are disposed in diagonal directions to press the mesh 19, the flat plate mesh 19 is more reliably formed into an annular shape can do.

The moving means 330 is a portion for moving the four pressing means 320a to 320d horizontally. The moving means 330 consists of a pair of horizontally extending and vertically spaced rails 332 and 334 and a hinge plate 326 for hinging the interruption of the rails 332 and 334 (see FIG. 5). The first pressing means 320a and the third pressing means 320c are fixed to the first rail 332 and the second pressing means 320b and the fourth pressing means 320d are fixed to the second rail 334, Respectively.

When the first rail 332 is moved to the left by the operation of the actuator (not shown), the hinge plate 326 is rotated counterclockwise about the hinge axis 328 And the second rail 334 is moved to the right side. The first pressing means 320a and the third pressing means 320c fixed to the first rail 332 move to the left and simultaneously the second pressing means 320b fixed to the second rail 334 and the second pressing means 320b fixed to the second rail 334, 4 pressing means 320d is moved to the right side. As a result, the first pressurizing means 320a and the second pressurizing means 320b come close to each other, and the third pressurizing means 320c and the fourth pressurizing means 320d come close to each other.

6 to 8 are views showing a mesh forming process using the mesh forming unit 300 according to the present embodiment.

When the fixing portion 310 advances toward the cutting unit (200 in Fig. 3), the mesh 19 is inserted between the support base 314 positioned at the tip of the fixing portion 310 and the pressing pin 316. [ In this state, the lowered pushing pin 316 holds and fixes the mesh 19 together with the support base 314, and as the securing portion 310 is retracted, the mesh 19 ).

6, when the flat plate mesh 19 is positioned between the pair of pressing means 320a and 320b, the actuator (328 in FIG. 4) is operated to raise the second pressure roller 326 . The second pressurizing roller 326 is spaced apart from the first pressurizing roller 324 so that a space is formed between the first pressurizing roller 324 and the second pressurizing roller 326. [

When the first rail 332 is moved to the left by actuating an actuator (not shown) in the above-described state, the second rail 334 is moved to the right by the hinge plate 326. That is, as shown in FIG. 5, the first pressing means 320a and the second pressing means 320b come close to each other.

When the first pressurizing means 320a and the second pressurizing means 320b move and the first pressurizing roller 324 is inserted into the groove 318 of the support base 314, the actuator (328 in Fig. 4) The second pressure roller 326 is lowered. At this time, the first pressure roller 324 and the second pressure roller 326 are disposed in diagonal directions to press the mesh 19.

Finally, when the first rail 332 is moved to the right by actuating an actuator (not shown), the second rail 334 is moved to the left by the hinge plate 326, and the first pressing means 320a, And the second pressing means 320b are moved away from each other. At this time, the flat plate mesh 19 is pulled in a state of being pressed by the first pressing means 320a and the second pressing means 320b, so that it is rolled into an annular shape and wound on the fixing portion 310. [

In the present embodiment, the pressing means 320 is exemplified as a pair of pressing rollers 324 and 326, but the present invention is not limited thereto. A pressure roller 342 contacting the lower surface of the mesh 19 and a pressure plate 344 contacting the upper surface of the mesh 19 as shown in Fig. At this time, a compression groove 346 is formed in the pressure plate 344 so that a part of the pressure roller 342 can be inserted. When the mesh 19 passes through the pressure roller 342 and the compression groove 346, .

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Those skilled in the art will understand. Therefore, the scope of protection of the present invention should be construed not only in the specific embodiments but also in the scope of claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.

1: insert injection device 10: mesh integral filter
12: body 14:
16: access hole 18: reinforcing member
19: mesh 100: supply unit
110,120: Reel 200: Cutting unit
300: mesh forming unit 310:
312: body 314: support
316: push pin 318: groove
320: pressing means 322: block
324: first pressure roller 326: second pressure roller
328: Actuator 330: Moving means
332,334: rail 336: hinge plate
338: Hinge shaft 400: Injection unit
500: first transfer unit 600: second transfer unit
700: guide rail 800: outlet

Claims (10)

1. A mesh forming unit for bending a planar mesh in an annular shape,
A tongue-shaped fixing part for holding and fixing the mesh;
Pressure means located on both sides of the fixing portion and contacting and pressing both sides of the mesh; And
And moving means for moving the pair of pressing means in the longitudinal direction of the mesh,
Wherein when the pair of pressing means is moved in a direction away from each other, the mesh is pulled by the pressing means, rolled in an annular shape, and wound on the fixing portion.
The method according to claim 1,
Wherein the pressing means comprises a first pressing roller contacting one surface of the mesh and a second pressing roller contacting the other surface of the mesh.
The method of claim 2,
Wherein the first pressing roller and the second pressing roller are arranged in the longitudinal direction of the mesh to press the mesh.
The method of claim 2,
Wherein the first pressure roller and the second pressure roller are arranged in an oblique direction to press the mesh.
The method according to claim 3 or 4,
Wherein the first pressure roller is provided so as to be movable in a direction that is close to or spaced from the second pressure roller,
Wherein the pressing means further comprises an actuator for moving the first pressing roller.
The method according to claim 1,
Wherein the pressing means comprises a pressing roller which is in contact with one surface of the mesh and a pressing plate which is in contact with the other surface of the mesh,
Wherein a compression groove is formed in the pressure plate so that a part of the pressure roller can be inserted.
The method of claim 6,
Wherein the pressure roller is provided movably in a direction that is close to or spaced from the pressure plate,
Wherein the pressing means further comprises an actuator for moving the pressure roller.
The method according to claim 1,
Wherein the fixing portion comprises a support base and a press pin movably provided on one side of the support base.
The method of claim 8,
Wherein grooves are formed on both sides of the distal end of the support so that the pushing means can move to a position close to the pushing pin.
An insert injection apparatus for manufacturing a mesh-integrated filter,
A feeding unit for feeding a flat mesh wound on the roll;
A cutting unit that cuts a flat mesh supplied from the supply unit to a predetermined size;
The mesh forming unit according to claim 1, wherein the flat mesh is bent in an annular shape;
An injection unit for injecting inserts into the annular mesh;
A first transfer unit for moving the annular mesh formed in the mesh forming unit to the injection unit; And
And a second transfer unit for discharging the mesh-integrated filter manufactured by the injection unit to the outside.

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