JPH08230073A - Method and apparatus for manufacturing filter - Google Patents

Abstract

PURPOSE: To produce a filter excellent from the viewpoints of quality and manufacturing efficiency by fully automating a series of filter manufacturing processes. CONSTITUTION: Sheet like meshes M are drawn out of roll meshes by a chuck 58 toward both side surfaces of mold core pins 16 arranged in one row. When outer molds 78 are pressed to both surfaces of the meshes M so as to wind the meshes around the mold core pins 1, a plurality of cylindrical meshes M are formed at the same time. Next, when the mated parts of the cylindrical meshes M are fused and cut by hot wires 104, the cylindrical meshes M each having two fused parts provided thereto along the axial direction thereof are molded. Therefore, conventional work molding the cylindrical meshes M by manual work to insert the mold core pins 16 in the meshes M is omitted and, by producing a large number of the cylindrical meshes one at a time, a molding time is shortened markedly and cost reduction can be achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a filter formed of mesh.

[0002]

2. Description of the Related Art As shown in FIG. 16 (F), a cylindrical filter F provided in an oil passage of a gasoline tank of a car
Is manufactured by the following procedure.

First, as shown in FIG. 16 (A), two zigzag meshes M are stacked and welded while being cut into a predetermined width (L) by an ultrasonic cutter 126, and then, as shown in FIG. 16 (B). It is processed into a bag-shaped mesh M as shown. Next, in FIG.
As shown in (C), creases are made, the extra fins 120 that have melted out are cut, and as shown in FIG. 16 (D), they are attached to the mold core pins 16 in the form of a box.

However, conventionally, since all such work has been performed manually, it takes a long working time and it is difficult to reduce the manufacturing cost. Also, if the mesh is coarse, there will be less welding white, so the ultrasonic cutter 1
It is not possible to weld while cutting at 26, and two steps of cutting and welding are required.

On the other hand, when the cylindrical mesh M as shown in FIG. 16 (E) is outsourced to another factory to manufacture the filter F, the mesh M of the mesh M is formed in the frame portion for molding the rib 128 of the filter mold 130. It is necessary to align the welded portion 122 and attach it to the die core pin 16, which requires labor and time in the final step.

[0006]

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to fully automate a series of filter manufacturing steps to manufacture a filter excellent in quality and manufacturing efficiency.

[0007]

According to a first aspect of the present invention, there is provided a method of manufacturing a filter, comprising a step of arranging sheet-like meshes on both side surfaces of mold core pins arranged in a row at a predetermined interval, It is characterized by including a step of pressing the mesh from the both sides so that the mesh is wound around the mold core pin, and a step of welding and cutting the wound tubular mesh at the joining portion.

A method of manufacturing a filter according to claim 2 is
A step of previously positioning a filter mold for filter molding with the mold core pin, and matching the filter mold to the mold core pin to which a tubular mesh is attached. I am trying.

The filter manufacturing apparatus according to claim 3 is
Mold core pins arranged in a line at a predetermined interval,
Mesh feeding means for feeding a sheet-shaped mesh in a state of facing each other with a predetermined gap, mesh drawing means for drawing the mesh from the mesh feeding means and moving it to both sides of the mold core pin, and the mesh for the mold core pin. It is characterized in that it has press means for pressing from both sides so as to wrap around, and welding cutting means for welding and cutting the mating portion of the mesh made cylindrical by the pressing means.

The filter manufacturing apparatus according to claim 4 is
It is characterized in that a filter mold for filter molding which is arranged above the mold core pin and which can be moved up and down to match and open the mold core pin is provided.

The filter manufacturing apparatus according to claim 5 is
It is characterized in that hand means is provided for removing the filter from the mold core pin after the filter mold is opened.

The filter manufacturing apparatus according to claim 6 is
It is characterized in that the mold core pins are installed facing each other on a turntable.

[0013]

In the method of manufacturing a filter according to the first aspect of the present invention, first, sheet-like meshes are arranged on both side surfaces of the mold core pins arranged in a line at a predetermined interval. Here, when the mesh is pressed from both sides so as to wind around the mold core pin, a plurality of cylindrical meshes are simultaneously formed.
Next, the welded portion of the tubular mesh is cut by welding to form a tubular mesh having two welded portions along the axial direction.

For this reason, the conventional work of manually forming a tubular mesh and inserting it into the die core pin is omitted, and by taking a large number of pieces,
The molding time can be significantly shortened and the cost can be reduced.

In the method of manufacturing the filter according to the second aspect, since the filter mold for forming the filter is pre-aligned with the mold core pin, after the pressing is released, the mold can be aligned with the welded portion of the mesh. The frame part of the filter mold for forming the rib corresponds to this.

Therefore, the work of inserting the cylindrical mesh into the die core pin and positioning the welded portion is eliminated.

In the filter manufacturing apparatus according to the third aspect of the present invention, the mesh drawing-out means is driven to draw out the sheet-like mesh from the mesh sending-out means while facing each other with a predetermined gap, and at a predetermined interval. Move to both sides of the die core pins aligned in a row.

Here, the pressing means presses from both sides so that the mesh is wound around the mold core pin. The welding cutting means welds and cuts the meshed portion of the tubular mesh formed by the pressing means, and a large number of tubular meshes are automatically formed on the die core pin. In this way, by welding and cutting in a pressed state, the overlapping meshes between the mold core pins are cut off as cut pieces and do not remain in the tubular mesh.

In the filter manufacturing apparatus according to the fourth aspect of the present invention, the filter mold for filter molding is arranged above the mold core pin so as to be movable up and down. This filter mold is
It descends and is matched with the mold core pin, and rises to open the mold.

Therefore, the filter as a finished product can be continuously manufactured, and the work of inserting the cylindrical mesh into the mold core pin and positioning the welded portion is eliminated.

In the filter manufacturing apparatus according to the fifth aspect, after the filter mold is opened, the hand means pulls out the filter as a finished product from the mold core pin, so that no human intervention is required.

In the filter manufacturing apparatus according to the sixth aspect, the mold core pins are installed facing each other on the turntable. Therefore, by turning the turning table 180 °, a tubular mesh is formed on the one hand,
On the other hand, the filter mold simultaneously produces the finished filter.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a filter manufacturing apparatus according to this embodiment comprises a disc-shaped turntable 10.
It has. On the turntable 10, die stands 12 and 14 are attached so as to face each other on the diameter line.
This turntable 10 is rotated 180 °, and the mold stand 1
The positions of the mold 2 and the mold stand 14 are interchanged. In addition, a plurality of cylindrical mold core pins 16 having a large diameter base portion are arranged in a row on the mold bases 12 and 14, and an upper small diameter portion is for winding the mesh. Further, holes 18 are formed at the four corners of the mold bases 12 and 14, and are used for alignment with a filter mold 20 and the like which will be described later. In addition, the uppermost plate 12A of the mold stands 12 and 14,
The cylinder 14A can be moved up and down by a cylinder (not shown) so as to push up the filter F as a finished product molded by the mold core pin 16 from the small diameter portion.

On the other hand, beam members 22 are vertically arranged so as to face the mold core pins 16 in parallel. This beam 2
A linear rail 24 is laid on the side surface of 2. A slide plate 28 is attached to the linear rail 24 via a linear guide 26 so that the ball rail can be smoothly moved on the linear rail 24 by circulating movement of the ball bearing. This slide plate 2
The rod 8 can be moved laterally by a rodless cylinder 30 arranged between the linear rails 24.

An L-shaped arm 32 is attached to the right end of the slide plate 28. A hand 34 capable of swinging is provided at the tip of the arm 32, and the filter F is attached to the mold core pin 16 as a finished product.
Is grasped and put into the product box 36. As shown in FIG. 6, the filter F employs a filter mold 20 that is molded in a state of being connected by a branch member 38.

On the left side of the slide plate 28,
Linear rails 40 are arranged in the vertical direction at a predetermined interval. A mounting plate 44 is mounted on the linear rail 40 via a linear guide 42, and can be moved up and down along the linear rail 40. A frame 46 is mounted on the mounting plate 44 so as to project toward the turntable 10. A positioning pin (not shown) is provided below the frame body 46, and when it is lowered by a cylinder (not shown), the mold stands 12, 1
4 is inserted into the hole 18. As a result, the frame 46 is aligned with the mold bases 12 and 14,
An outer die 78 and a pressing block 80, which will be described later, correspond to the die core pin 16 at a predetermined position.

A rectangular opening 48 is formed in the bottom plate 46A of the frame 46. A linear rail 50 is arranged parallel to the linear rail 24 at the edge of the opening 48. A driving body 52 is slidably attached to the linear rail 50, and can be reciprocated along the linear rail 50 by a cylinder (not shown). A linear rail 54 extending in the vertical direction is provided on the side surface of the driving body 52.
Is installed, and an L-shaped mount 56 is mounted on the linear rail 54.
Are mounted so that they can enter into the opening 48. This pedestal 56 has a mesh M that is superposed in two.
A chuck 58 for gripping the end portion of and a finger 60 that can be opened and closed to the left and right are provided so as to project into the opening 48.

On the other hand, a roll box 62 is arranged on the left side of the frame 46. In the roll box 62, two roll meshes 64 are arranged side by side, and the linear rails 24 are provided via a plurality of transport rollers 66.
A sheet-shaped mesh M can be pulled out at a constant interval in parallel with.

Guide rollers 68 are disposed on both sides of the exit of the roll box 62. A linear guide cylinder 70 is provided outside the guide roller 68. As shown in FIGS. 7 and 11, the linear guide cylinder 70 is provided with a slider 72 whose ends are bent in directions toward each other. Therefore, by moving the slider 72 in the direction in which the sliders 72 approach each other by the linear guide cylinder 70, the sheet-shaped mesh M is squeezed into a triangular shape while being wound around the guide roller 68.

A winding unit 74 for winding the mesh M around the mold core pins 16 is arranged below the frame 46. As shown in FIGS. 7 and 8, a pair of base plates 76 forming the winding unit 74 are arranged on both sides of the opening 48, and are slidable in a direction in which they approach each other by a cylinder (not shown).

The base plate 76 includes a frame portion 78A.
An outer mold 78 made of ceramic and having a semicircular recess is arranged in accordance with the interval between the mold core pins 16. The inner diameter of the frame portion 78A of the outer die 78 is designed to be substantially equal to the outer diameter of the die core pin 16. Further, the inner diameter of the frame portion 78A is not a perfect semicircle, and when pressed against the die core pin 16, the welded portion 122 (see FIG. 16) of the mesh M that is tubular is formed on the upright mating surface 78B. It is taken into account to allow for possible clearance.

On the other hand, a pressing block 80 having a curved end is disposed between the outer molds 78. The rear end of the pressing block 80 is attached to the pressing plate 82. Linear guides 84 are attached to both ends of the push plate 82. The linear guide 84 is bridged between guide plates 86 and 88 that are provided upright in front of and behind the base plate 76, and the shaft 9 is supported by an auxiliary plate 92 at an intermediate portion.
It is mounted slidably to zero. by this,
By sliding the push plate 82 by a drive cylinder (not shown), the push plate 82 can be driven independently of the outer die 78, and can be separated from the mesh M wound around the die core pin 16 as shown in FIG.

A piercing pin 94 penetrates the pressing block 80 from the rear side. This piercing pin 94
The middle part of the is supported by the guide plate 96, and the rear end is fixed to the drive plate 98. This drive plate 98
The operating cylinder 100 slides in parallel with the push plate 82. A hole (not shown) into which the piercing pin 94 can be inserted is formed in the corresponding pressing block 80 on the opposite side. Therefore, the pressing block 80
When they abut each other, the piercing pin 94 is inserted into the hole while piercing the mesh M.

An electrode plate 102 is arranged above the pressing block 80 and the outer die 78 so as to correspond to the gap between the pressing block 80 and the outer die 78.
The upper end of the heating wire 104 is wound around the tip of the electrode plate 102. The lower end of the heating wire 104 is pulled down and penetrates the clip 106. A weight 10 is attached to the lower end of the heating wire 104 that penetrates the clip 106.
8 is suspended. The heat wire 104 is arranged below the electrode plate 102 and is designed so as not to be relaxed by heat by a spring (not shown) that biases the wire upward. In addition, the electrode plate 102 and the clip 106
Can be moved toward the pressing plate 82 while being in contact with the side surface of the mold core pin 16 by a driving device (not shown).

Here, the operation of the filter manufacturing apparatus according to this embodiment will be described. As shown in FIG. 1, at the time of starting,
The mold stands 12 and 14 on which the mold core pins 16 on which the mesh M is not wound are arranged are set on the turntable 10.

Here, the slide plate 28 moves in the direction of arrow A and is positioned above the mold core pins 16 of the mold base 12 as shown in FIG. This slide plate 28
During movement, the pedestal 56 descends along the linear rail 54 and, as shown in FIG. 9, the fingers 60 in the closed state.
However, the mesh M is put into a state in which two meshes are overlapped, and the mesh M is inserted into the space between the slides 72 holding the tips, and the chuck 58 holds the tip of the mesh M protruding from the slide 72.
Next, as shown in FIG. 10, the slider 72 opens left and right, the chuck 58 moves in the direction of arrow A along the linear rail 50, and the mesh M is pulled out from the roll box 62. At this time, the fingers 60 open and 2
The sheet-shaped meshes M are positioned above both sides of the mold core pin 16.

Next, as shown in FIG. 2, the frame 46 descends along the linear rail 40, and the mesh M is positioned on the side surface of the die core pin 16 (see FIG. 8).

Here, as shown in FIG. 11 to FIG.
The base plate 76 (see FIG. 8) on one side slides and winds the outer mold 78 so that the mesh M is pressed against one surface of the mold core pin 16. At this time, the loose mesh M of each mold core pin 16 is fed to the mold core pin 16 side by the pressing block 80, and the mesh M is completely wrapped around the mold core pin 16.

Next, as shown in FIG. 13, the base plate 76 on the opposite side slides toward the mold core pin 16, and the two outer molds 78 are aligned with the mold core pin 16. As a result, the tubular mesh M is formed.
At this time, the pressing block 80 on one side is attached to the mold core pin 1
Allowing the lateral movement of the mesh M once away from No. 6 allows the mesh M to be completely caught in the mold core pin 16.

Next, as shown in FIG. 14, the pressing block 80 again moves toward the mold core pin 16 and comes into contact with the corresponding pressing block 80, and then the piercing pin 94.
Is extended and the mesh M is pierced. Here, the electrode plate 102 moves toward the mold core pin 16, the heat wire 104 that has generated heat moves along the side surface of the outer mold 78, and a crotch is formed between the mold core pin 16 and the mold core pin 16. The overlapping meshes M are cut and welded, and then the slider 72 is closed.

Next, as shown in FIG. 15, the electrode plate 102, the outer die 78, and the pressing block 80 are separated from the die core pin 16, and a cylindrical mesh M is formed on the die core pin 16. Here, after the mounting plate 44 moves up, the slide plate 28 moves from the state of FIG. 2 to the state of FIG. At this time, the piercing pin 94 is retracted, the cut piece M1 hits the tip of the pressing block 80 and is removed, and the chuck 58 is opened and left uncut.
Are thrown into the trash box 93.

At the same time, the turntable 10 has 18
The mold stand 12 moves to the front side by turning 0 °, and the mold stand 1
4 moves to the slide plate 28 side.

Next, as shown in FIG. 4, the filter mold 2
0 moves down and the die core pin 16 is placed on the die stand 12.
(Cylindrical mesh M is wrapped around) and the resin is injected. At this time, slide plate 2
8 moves above the mold core pin 16 mounted on the mold base 14 to execute the above-described work shown in FIGS. 9 to 15.

In this filter mold 20, the frame portion for molding the rib 128 (see FIG. 16) of the filter F has a mesh M.
Since it is set so as to correspond to the welded portion 122, the finished filter can be continuously manufactured only by matching the molds.

Next, as shown in FIG. 5, the filter mold 20 is separated from the mold core pin 16 placed on the mold base 12, and the turntable 10 is rotated 180 °. At the same time,
The slide plate 28 moves to the left, and the hand 34 is located on the filter F as a finished product.

Next, when the hand 34 grasps the filter F,
As shown in FIG. 6, the turntable 10 turns 180 °, the mold base 14 moves to the front side, and the filter mold 20
Moves down and is matched with the mold core pin 16 (the cylindrical mesh M is wound) mounted on the mold base 14. At the same time, the slide plate 28 moves to the right side, and the work shown in FIGS.
The cylindrical mesh M is formed on the die core pin 16 placed on the. At this time, the filter F as a finished product grasped by the hand 34 is thrown into the product box 36.

As described above, in the filter manufacturing apparatus according to this embodiment, the cylindrical mesh M and the finished filter F are manufactured at the same time on the same turntable 10, so that the process cycle is shortened. To be done.

[0048]

Since the present invention has the above-mentioned structure, the series of steps for manufacturing the filter can be fully automated without manpower. Therefore, it is possible to manufacture a filter excellent in terms of quality and manufacturing efficiency.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a series of operations of a filter manufacturing apparatus according to an embodiment.

FIG. 2 is an overall perspective view showing a series of operations of the filter manufacturing apparatus according to the present embodiment.

FIG. 3 is an overall perspective view showing a series of operations of the filter manufacturing apparatus according to the present embodiment.

FIG. 4 is an overall perspective view showing a series of operations of the filter manufacturing apparatus according to the present embodiment.

FIG. 5 is an overall perspective view showing a series of operations of the filter manufacturing apparatus according to the present embodiment.

FIG. 6 is an overall perspective view showing a series of operations of the filter manufacturing apparatus according to the present embodiment.

FIG. 7 is a partial perspective view showing a mesh drawing mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 8 is a partial perspective view showing a mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 9 is a conceptual diagram showing a series of steps of a mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 10 is a conceptual diagram showing a series of steps of a mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 11 is a conceptual diagram showing a series of steps of the mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 12 is a conceptual diagram showing a series of steps of a mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 13 is a conceptual diagram showing a series of steps of the mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 14 is a conceptual diagram showing a series of steps of the mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 15 is a conceptual diagram showing a series of steps of the mesh winding mechanism of the filter manufacturing apparatus according to the present embodiment.

FIG. 16 is a conceptual diagram showing a manufacturing process of a conventional filter.

[Explanation of symbols]

 10 Turntable 16 Mold Core Pin 20 Filter Mold 34 Hand 58 Chuck (Mesh Drawout Means) 60 Finger (Mesh Drawout Means) 62 Roll Mesh (Mesh Sending Means) 72 Slider (Mesh Sending Means) 78 External Mold 80 Pressing Block 94 Piercing pin 104 hot wire

Claims (6)

[Claims] 1. A step of arranging sheet-shaped meshes on both side surfaces of mold core pins arranged in a row at a predetermined interval, and a step of pressing the mesh core pins from both sides so that the meshes are wound around the mold core pins. And a step of welding and cutting the wound tubular mesh at a joining portion. 2. A step of preliminarily aligning a filter mold for filter molding with the mold core pin, and matching the filter mold to the mold core pin to which a tubular mesh is attached, The method for manufacturing a filter according to claim 1, further comprising: 3. A mold core pin arranged in a row at a predetermined interval, a mesh feeding means for feeding a sheet-like mesh in a state of facing each other with a predetermined gap, and a mesh drawn from the mesh feeding means. Mesh drawing means for moving to both sides of the mold core pin, pressing means for pressing from both sides so that the mesh is wound around the mold core pin, and welding cutting of the meshed portion of the mesh formed by the pressing means. Welding cutting means for
An apparatus for manufacturing a filter, comprising: 4. The filter mold for filter molding, which is disposed above the mold core pin and is movable up and down to match and open the mold core pin. An apparatus for manufacturing the described filter. 5. The filter manufacturing apparatus according to claim 4, further comprising hand means for removing the filter from the mold core pin after the filter mold is opened. 6. The filter manufacturing apparatus according to claim 3, wherein the mold core pins are installed facing each other on a turning table.