KR20050098752A - Vibration deposit apparatus and method - Google Patents

Abstract

An object of the present invention is to provide an apparatus and a method for vibration welding a workpiece made of at least three thermoplastic materials in a sandwich manner.

An upper jig means for sandwiching at least three or more workpieces made of a thermoplastic material and integrally vibrating and welding the same, the upper jig means for supporting microvibration to be imparted to the first workpiece by the vibration means, And a lower jig means capable of supporting a plurality of second work materials to be welded to at least both surfaces of the work material. The second work material is moved in the height direction by the elevating means to align with the first work material, Means for moving the second workpiece in the direction of the first workpiece in the transverse direction by means of the means for moving the second workpiece in contact with the first workpiece.

Description

 TECHNICAL FIELD [0001] The present invention relates to a vibration deposition apparatus and method,

The present invention belongs to the field of vibration welding technology in which a plurality of workpieces made of a thermoplastic material are subjected to relative vibration and welded by frictional heat.

[Patent Document 1] JP-A-9-85833

An embodiment of the present invention discloses a technique of performing vibration welding processing by bringing two processing materials made of a thermoplastic material into contact with each other in a face-to-face manner.

[Patent Document 2] JP-A-9-151723

According to an embodiment of the present invention, there is disclosed a technique of vibrating and welding two workpieces contacted by a fixed side jig and a vibrating side jig.

According to the techniques disclosed in the above documents 1 and 2, three or more workpieces can not be welded together in a sandwich form.

A problem to be solved by the present invention is that it is difficult to develop a technique of integrally welding three or more workpieces by a continuous machining process.

In addition, the conventional thermoplastic material products of this kind have the following problems.

For example, a center console box (box for storing articles) installed between a driver's seat and a front passenger's seat of a vehicle has a complicated shape, so that a complicated mold is required in order to integrally perform molding processing, .

In addition, as means for connecting a plurality of workpieces with screws or the like, there is a fear of not only loosening the screws due to vibration but also increasing the number of manufacturing steps, and there is a fear of instability in terms of strength.

Problems to be solved by the present invention with respect to various problems as described above are as follows.

A first problem to be solved by the present invention is to provide a workpiece made of three or more thermoplastic materials which can be integrally vibrated and welded in sandwich form.

A second problem to be solved by the present invention is to provide a work capable of vibrationally welding a work composed of three or more thermoplastic materials in a state of high strength.

A third problem to be solved by the present invention is to provide a finished product made of a thermoplastic material having a complicated shape with high quality without causing manufacturing defects.

A fourth problem to be solved by the present invention is to provide a slide stabilizing means for controlling the relative movement distance and gap of the lower jig base block to stabilize the positional variation in the height direction to improve the quality of the welded product .

The fifth problem to be solved by the present invention is to control the height position of the lower jig block to improve the quality of the welded product.

The sixth problem to be solved by the present invention is that it does not require complicated and expensive molds.

The seventh problem to be solved by the present invention is that since the workpiece can be integrally connected without the need for fixing means for dissimilar materials such as metal screws, it is possible not only to reduce the number of manufacturing steps, Is to provide something that is unnecessary and effective.

An eighth problem to be solved by the present invention is to provide a method capable of vibro-welding a work in a continuous manufacturing process, thereby greatly shortening a manufacturing time.

Means for solving the above problems are as follows.

(1) An apparatus for sandwiching at least three or more workpieces made of a thermoplastic material and integrally vibrating and welding the same, comprising: upper jig means for supporting micro-lateral vibration to be imparted to the first workpiece by vibrating means; And a lower jig means capable of supporting a plurality of second workpieces welded to at least both sides of the workpiece, wherein the second workpiece is moved in the height direction by the elevating means so as to align with the first workpiece, Means for moving the second workpiece in the direction of the first workpiece in the transverse direction and means for actuating the lower jig means to contact the first workpiece in the transverse direction.

(2) The vibration welding apparatus according to the above (1), wherein the slide stabilizing means for synchronizing the relative lateral movement of the left and right lower jig blocks is provided.

(3) The vibration welding apparatus according to (1), wherein a slide stabilizing means is provided which stabilizes the relative lateral movement of the left and right lower jig blocks in the height direction.

(4) The vibration welding apparatus according to the above (1), wherein a distance sensor capable of controlling the intervals of the left and right lower jig blocks is provided.

(5) The vibration welding apparatus according to (1) above, wherein a lift control bar and a frame stopper are provided for restricting the height position of the lift frame.

(6) A vibration welding method for integrally performing vibration welding by sandwiching at least three processing materials made of a thermoplastic material, comprising the steps of:

(A) Process material mounting process

The first processing member and at least a plurality of second processing members to be welded to both side surfaces of the first processing member are mounted on the upper jig means and the plurality of lower jig means which are disposed apart from each other.

(B) Process material contact process

The plurality of lower jig means are raised and the first processing material and the second processing material are brought into pressure contact with each other.

(C) Vibration welding process

The upper jig means generates frictional heat between the first workpiece and the second workpiece which is brought into contact with the first workpiece by a slight transverse vibration to partially dissolve the workpiece.

(D) Process cooling process

The micro-lateral vibration is stopped to naturally cool.

The unique effects of the present invention are as follows.

1. At least three processing materials made of a thermoplastic material can be integrally vibrated and welded in sandwich form.

2. The strength of vibration welded finished product is great.

3. High-quality finished products can be obtained without the need for complicated molds.

4. Since the finished product does not contain any foreign materials such as metal parts, it can be discarded without the need to collect it separately.

5. Productivity improves because the manufacturing process can be accelerated continuously.

Best Mode for Carrying Out the Invention Hereinafter, the best mode of the present invention will be described with reference to Figs.

The vibration welding apparatus 1000 shown in Fig. 1 has the following configuration as a concrete example of forming a center partition-and-stuffing tool (center console) installed with a passenger seat adjacent to a crucible of an automobile.

1. Outline of the vibration welding apparatus 1000

Various means to be described later are provided in the frame means 100 comprising the fixed frame 110 and the lifting frame 120.

That is, the lifting frame 120 lifted and lowered by the hydraulic actuating means 200 is moved by the slide operating means 300 and is lifted by the lower jig means (not shown) which can hold the first work piece (central box) And an upper jig 500 capable of holding the second processing material (left and right panels) by the suction means 400 is provided on the stationary frame 110 by applying micro vibration to the stationary frame 110 by the vibration generating means 600, Means 700 is provided and is configured to be controlled by a control means 800 described later.

2. Composition of each individual means

(1) The upper jig means 700,

The upper jig means 700 holding the central box CB when vibrating the central box CB and the left and right panels LP and RP constituting the center console CC as shown in Fig. As shown in FIG. 1, two upper jig-receiving blocks 720 are provided in pairs on a lower surface of an upper jig plate 710 provided in the fixed frame 110, and a central box CB And is inserted into the center box CB to hold the center box CB with a vacuum cup 410 for the suction means 400 .

Further, the upper jig plate 710 is configured to be supplied with micro vibration from the vibration generating means 600 (vibrator).

(2) the lower jig means 500,

The left and right lower jig base blocks 510 and 520 mounted on the lower jig means 500 as a major enhancement are mounted on the lifting frame 120 so as to be capable of reciprocating in the lateral direction, The second and third cushioning materials 511 and 511 are provided on the opposed surfaces that support the left and right panels LP and RP constituting the center console CC, And the vacuum cups 420 and 430 for the left and right panels of the adsorption means 400 can maintain the left and right panels LP and RP in a major improvement.

The slide operation means 300 is configured such that the outer ends of the piston rods 311 and 321 of the first and second air cylinders 310 and 320 installed on the lifting frame 120 are connected to the left and right lower jig blocks 510, 520 on the left and right flanges 513, 523 protruding upward and downward.

Each of the frames 512 and 522 is provided with a set of racks 514 and 524 interlocked with a pinion 530 so that the slides 515 and 524 protruding from the lower surfaces of the frames 512 and 522, 525 are coupled to the rails 123 on the lifting frame 120 are interposed.

In the welding operation, the distance sensor 900, which detects the distance between the left and right lower jig base blocks 510, 520 that are close to each other and spaced apart from each other, A sensor for detecting the change is provided between the left and right lower jig base blocks 510 and 520. [

The dropping means 920 of the center box CB removes the holding plate 921 for preventing the dropping and dropping of the center box CB held by the upper jig receiving block 710 from the piston bar 921 of the fluid cylinder 922. [ The center box CB can be stably held in the welding process by fixing the top box 923 at the upper end of the center box CB.

(3) Hydraulic lifting means (200)

The lifting frame 120 is connected to the piston bar 211 of the hydraulic cylinder 210 and is configured to move up and down the lower jig means 500 during the welding process. The bar 121 is engaged with the frame stopper 122 of the fixed frame 110 so that the height position of the lift frame 120 is regulated to improve the safety.

(4) Control means (800)

The control means 800 constituting the C.P.U is wired as shown in FIG. 2, and can appropriately operate and stop the respective means in accordance with a command from the operation command section 810. [

That is, the hydraulic actuating means 200 is operated by the control means 800 so that the lifting frame 120 is lifted and lowered and the central box CB is lifted up by the suction means 400 to the upper jig base block 720 and the left and right panels LP and RP to the left and right lower jig base blocks 510 and 520, respectively.

The left and right lower jig base blocks 510 and 520 are moved by the slide operation means 300 to bring the center box CB and the left and right panels LP and RP into pressure contact with each other, And the distance between the left and right lower jig base blocks 510 and 520 can be controlled by the distance sensor 900 in order to stabilize the welding process. The height of the lifting frame 120 can be safely controlled.

In addition, it is possible to maintain the center box CB stably by controlling the drop prevention means 920. [

3. Processed material

The three processing materials constituting the center console CC shown in Fig. 12 are all made of a thermoplastic material such as ABS resin or PP material.

The center box CB, which is located at the center and subjected to vibration welding, is box-shaped.

The welding ribs LIB projecting inward toward the center box CB are formed on the left and right panels LP and RP sandwiching the center box CB and being vibration-welded to the center box CB, And are formed in a transverse direction parallel shape.

4. Vibration welding method

Hereinafter, the above-described welding method by the vibration welding apparatus 1000 will be described with reference to Figs. 3 to 11 for each step.

(1) Pre-process

As shown in FIG. 3, the lifting frame 120 is in the lowered position, the left and right lower jig base blocks 510 and 520 are spaced apart from each other, and the upper jig base block 720 is equally spaced And becomes a standby state.

(2) Work set process

The left and right panels LP and RP are inserted into the left and right lower jig base blocks 510 and 520 while the center box CB is inserted into the upper jig base block 720 as shown in FIG. The suction means 400 is started to move the center box CB and the left and right panels LP and RP to the upper jig 410 by the box vacuum cup 410 and the vacuum cups 420 and 430 for the left and right panels, And is stably held by the support block 720 and the left and right lower jig base blocks 510 and 520.

(3) Rising of the lower jig means 500

The hydraulic cylinder 210 is started so that the lower jig means 500 is lifted together with the lifting frame 120 to move the left and right panels LP and RP to the center box CB And reaches a position where they are opposed to each other.

The upward movement of the lifting frame 120 at this time can be safely raised until the lifting control bar 121 is restrained by the frame stopper 122 at the stop position.

The maintenance box 921 connected to the piston bar 923 of the fluid cylinder 922 of the fall preventing means 920 is raised (arrow B) to support the center box CB from the underside, do.

(4) Work pressure welding process

The piston rods 311 and 321 of the first and second air cylinders 310 and 320 are operated as shown by the arrows and the left and right jig base blocks 510 and 520 are moved And the center box CB is sandwiched between the left and right panels LP and RP so that the welding ribs LIB are in pressure contact with each other.

At this time, since the slide stabilizing means 560 is opened between the piston rods 311 and 321, the left and right lower jig base blocks 510 and 520 are moved equidistantly, 515, and 525, respectively.

(5) Vibration welding process

Minute vibrations in the direction orthogonal to the paper are imparted to the upper jig supporting block 720 from the vibrator 600 connected to the upper jig plate 710 as shown in Fig. Friction heat is generated between the center box CB and the center box CB by melting the ends of the welding rib LIB and welding the left and right panels LP and RP and the center box CB.

The first and second air cylinders 310 and 322 are additionally operated while the distance sensor 900 detects the distance corresponding to the dissolution amount (LIS) corresponding to the dissolution amount of the welding rib LIB And the left and right lower jig base blocks 510 and 520 are approached slightly (about 3 mm) to promote the welding process.

(6) Cooling process

The vibrator 600 is stopped by the control means with the signal of the distance sensor 900 in the state of the process (5), and the position is maintained for a short time (about 3 seconds) )do.

(7) Retraction of the fall preventing means 920

The holding plate is lowered 921 and separated from the lower surface of the center box CB as shown by an arrow in FIG.

(8) Liberation process of the central box (CB)

The operation of the box vacuum cup 410 of the suction means 400 is stopped and the elevation frame 120 is lowered to release the upper jig base block 720 from the center box as shown in FIG.

(9) Liberation process of left and right panels (LP, RP)

The operation of the vacuum cups 420 and 430 for the left and right panels of the suction means 400 is stopped and the first and second air cylinders 310 and 320 are reversed in the direction of the arrow display as shown in FIG. The left and right panels LP and RP are released from the right and left jig base blocks 510 and 520, respectively.

(10) Extraction process of center console (CC)

The center console CC formed by the above process is extracted from the vibration welding apparatus 1000 as shown in Fig. 11 and all the processes are terminated.

[Example]

An example of the vibration welding operation is as follows.

1. Small vibration frequency ... 100 Hz to 240 Hz

2. Pressing force on the material ... About 50 to 1000 kg

3. Melting value ... About 3mm

4. Welding time ... About 3 sec

5. Cooling time ... About 3 sec

The processing materials are as follows.

1. Raw materials ABS resin, acrylic resin, polycarbonate, polyethylene, polypropylene.

2. Dimensions

   Thickness of central box ... About 2 to 5 mm

   Thickness of left and right panel ... About 2 to 5 mm

According to the present invention, it is possible to shorten the manufacturing process to obtain a finished product made of a thermoplastic material having a complicated shape, and to make the finished product as compact as possible, and also to increase the rigidity, Industrial availability is extremely high.

1 is a side sectional view of a best mode of the present invention;

2 is a functional block diagram of Fig.

3 is a process chart before welding.

Fig. 4 is a work set process diagram. Fig.

5 is a view showing the process of raising the lower jig means.

6 is a view showing a work pressure welding process.

7 is a view showing a vibration welding process.

Fig. 8 is a process chart of a retreat of the fall preventing means. Fig.

Fig. 9 is a process flow chart of a central box; Fig.

Fig. 10 is a process flow chart of the left and right panels. Fig.

11 is an extraction process diagram of the center console.

12 is a perspective view of a work of the center console;

Description of the Related Art [0002]

1000: Vibration welding equipment

300: Slide actuating means

500: Lower jig means

600: vibration means (vibration generating means, vibrator)

700: Upper jig means

Claims (6)

An apparatus for sandwiching at least three or more workpieces made of a thermoplastic material and integrally performing vibration welding, An upper jig means for supporting the micro-lateral vibration to be imparted to the first working material by the vibrating means and a lower jig means for supporting a plurality of second working materials welded to at least both surfaces of the first working material, The second workpiece is moved in the height direction to align it with the first workpiece so that the second workpiece is moved in the transverse direction in the direction of the first workpiece and brought into contact with the first workpiece And means for operating said lower jig means. The vibration welding apparatus according to claim 1, wherein the slide stabilizing means is provided for synchronizing relative lateral movement of the left and right lower jig blocks. 2. The vibration welding apparatus according to claim 1, wherein the relative lateral movement of the left and right lower jig blocks is stabilized in the height direction. The vibration welding apparatus according to claim 1, wherein a distance sensor capable of controlling the intervals of the left and right lower jig blocks is provided. The vibration welding apparatus according to claim 1, wherein a lift control bar and a frame stopper are provided for restricting a height position of the lift frame. A welding method in which at least three or more workpieces made of a thermoplastic material are sandwiched and integrally subjected to vibration welding, (A) an upper jig means, a plurality of lower jig means, and a first workpiece and at least a plurality of second workpieces welded to both side surfaces of the first workpiece; (B) a process material contacting step of raising a plurality of lower jig means and bringing the first processing material and the second processing material into pressure contact with each other; (C) a vibration welding step of applying a micro-lateral vibration to the first workpiece by the upper jig means to generate frictional heat between the press-contacted second workpiece to partially dissolve the workpiece; And (D) stopping the micro-lateral vibration to naturally cool the workpiece.