JP2000158243A - Part automatic press fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To press-fit a part in a work exactly and quickly by providing a holding part capable of holding and releasing the part after heating set on a positioning part and a press fitting tool pushing the part held with a holding part into the part embedding hole of a work set on a working bench to be press fitted and capable of reciprocatingly movable. SOLUTION: A part 3 carried by a carrying body 4 is fed to a heating part 5 provided on the ahead of the carrying body 4 to be heated. The part 3 heated by the heating part 5 is fed to a positioning part 6 provided beyond it. The part 3 positioned on the positioning part 6 is held with a holding part 7. A press fitting tool 9 is brought down to push the holding part 7 positioned on the positioning part 6 against the part 3, and the part 3 is sucked to be held with the holding part 7. The press fitting tool continues to descend in the state to push down the part 3. At the time, because blocks 54 are downward opened, the press fitting tool 9 descends until the part 3 held with the holding part 7 is pressed in the part embedding hole of a work 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically press-fitting a bit (part) such as a female screw into a component embedding hole of a cover or a case (work) of a board of a personal computer, a communication device or the like. And an automatic part press-fitting device.

[0002]

2. Description of the Related Art Covers and cases are usually made of resin, and are provided with protruding parts in the center of which are provided with a component embedding hole in a vertical direction. The female screw is press-fitted and fixed. Conventionally, there are a manual method and a mechanical method for press-fitting and fixing a metal female screw into a component embedding hole.

[0003] The conventional manual method employs a metal part a (see FIG. 1).
4) are arranged one by one in a predetermined direction in a grid on a metal table, and the table is placed on a heater and heated to 200 ° C. to 500 ° C., and the press-in jig of FIG. The holding portion (usually a plastic tube) c at the end of b is inserted into the screw hole d of the component a, and the components a are taken out one by one from the arrangement table and pushed into the component embedding hole f of the work e. In this case, the peripheral wall of the component embedding hole f into which the component a is pressed is softened by the heat of the component a and cuts into a groove or a concave portion g formed in advance on the outer peripheral surface of the component a, and when the resin is cured, the component is hardened. a is fixed to the work e. Since the softened resin is instantaneously hardened, the component a is pushed into the component embedding hole f and the pressing jig b is immediately removed from the component embedding hole f. Will not be pulled out of.

[0004] In the conventional mechanical system, a work is positioned and fixed on a work table, and heated components are held one by one by a press-fitting tool. This is a method in which the component descends and press-fits the component into the component embedding hole. Also in this case, the peripheral wall of the component embedding hole into which the component has been pressed is softened by the heat of the component, bites into the concave portion on the outer peripheral surface of the component, and is hardened.

[0005]

The manual method has the following problems. . The parts must be manually arranged one by one on the table, which is troublesome. . The press-fitting jig is pressed into the individual components arranged on the table, and the components are taken out one by one, and the components have to be press-fitted into the component embedding holes of the work each time, which is very troublesome and troublesome. . Not only if the worker is an unskilled worker, but even if the worker is a skilled worker, failure occurs because the part is press-fitted obliquely into the part embedding hole of the work or only halfway through the part embedding hole of the work. Easy to do. . If the workers are different, the finish will vary even if the workers are skilled. . Normally, since a single work has a plurality of component embedding holes, a component embedding hole that is forgotten to be press-fitted by hand is likely to occur.
The probability increases as the number of component embedding holes increases. . Since the sorting table is heated by the heater, the worker may inadvertently burn while working.

The conventional mechanical system has the following problems. . Since the press-fitting tool that pushes the component moves while holding the component, and also moves up and down for press-fitting, the press-fitting tool must have a component holding mechanism, a moving mechanism, and a press-fitting mechanism, which complicates the mechanism. . . Because the press-in tool moves, the press-in position of the part is likely to shift,
If the parts are misaligned, the components may be obliquely press-fitted or jammed during the press-fitting and stopped, resulting in poor press-fitting. . Since the press-fitting tool can press-fit only one type of component into the work in one movement and up and down (one stroke),
Even if two or more press-fitting tools are provided, while one of the press-fitting tools is performing the press-fitting movement, the other press-fitting tools cannot perform the press-fitting motion, resulting in poor work efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent the occurrence of defects such as forgetting to press-fit a part, misalignment, insufficient press-fitting, and bending after press-fitting, and to accurately and quickly press-fit a part into a part embedding hole, thereby improving work efficiency. It is an object of the present invention to provide a component automatic press-fitting device which can be improved to greatly reduce labor and is safe without burns during operation.

[0008]

According to a first aspect of the present invention, there is provided an automatic component press-in device for setting a work, a driving mechanism for moving the work table in the X-Y direction, and press-fitting the work. A carrier that aligns and sends out components, a heating unit that heats the components during transportation, a positioning unit that positions the transported heated components at the depressed position, and a heated component that is set in the positioning unit A holding part capable of holding and releasing, a reciprocating press-fitting tool for lowering the holding part, pressing a part held by the holding part into a component embedding hole of a work set on the worktable and press-fitting the worktable; Holding unit, has a control unit for controlling the operation of the press-fitting tool, etc., the positioning unit,
The parts held by the holding part are opened when pressed by the descending holding part, the parts held by the holding part are pushed down, and the holding part returns above the positioning part and is closed by the return tool when the pressing by the holding part is released. .

According to a second aspect of the present invention, there is provided an automatic component press-fitting device, comprising: a work table on which a work is set; a driving mechanism for moving the work table in the X-Y directions; The carrier, a positioning part for positioning the conveyed parts at the depressed position, a holding part capable of holding the parts set on the positioning part, and the parts held by the holding part being lowered by lowering the holding part to the workbench. It has a reciprocating press-fitting tool that presses and press-fits into the component embedding hole of the set work, a worktable, a holding unit, a control unit that controls operations of the press-fitting tool, and the like, and the holding unit is vibrated by ultrasonic waves. It is possible to push the component into the component embedding hole of the workpiece while vibrating the component by the vibration.

According to a third aspect of the present invention, there is provided a component automatic press-fitting apparatus, comprising: a work table on which a work is set; a drive mechanism for moving the work table in the X-Y axis direction; The carrier, a positioning part for positioning the conveyed parts at the depressed position, a holding part capable of holding the parts set on the positioning part, and the parts held by the holding part being lowered by lowering the holding part to the workbench. It has a reciprocating press-fitting tool that presses and press-fits into the component embedding hole of the set work, a worktable, a holding unit, a control unit that controls operations of the press-fitting tool, and the like, and the holding unit is vibrated by ultrasonic waves. The component can be pushed into the component embedding hole of the work while vibrating the component by the vibration, and the positioning portion is opened by being pressed by the descending holding portion, and the component held by the holding portion is pushed down and held. There is one that is closed by the return member pressing is released back to above the positioning unit.

According to a fourth aspect of the present invention, there is provided an automatic component press-fitting device according to the first, second or third aspect, wherein the press-fitting tool is reciprocated by a magnet type rodless cylinder. Things.

According to a fifth aspect of the present invention, there is provided an automatic component press-in device according to the first, second, or third aspect, wherein the holding portion has an elongated shaft that can be inserted into a screw hole of the component. Is provided with an engaging ring having a larger outer diameter than the shaft, a larger outer diameter than the screw hole of the component, and a restoring force capable of expanding and contracting the diameter.

According to a sixth aspect of the present invention, there is provided an automatic component press-fitting device according to the first, second, or third aspect, wherein the press-fitting tool is a component to be inserted into a final component embedding hole of the workpiece. Between the end of press-fitting and the start of embedding in the next work, the part heated by the heating unit is held at a position where it can be prevented from being conveyed to the positioning unit by the carrier. is there.

According to a seventh aspect of the present invention, there is provided the automatic component press-in device according to the first, second, or third aspect, wherein the worktable is configured to suction-fix the workpiece from the back side thereof. It has a mechanism.

According to an eighth aspect of the present invention, there is provided an automatic component press-in device according to the first, second, or third aspect of the present invention, wherein the bottom surface of the positioning portion is one step lower than the conveying body in front of the positioning portion. Further, the side wall surface of the positioning portion is formed as a tapered surface that gradually expands outward upward so that when a component conveyed by the carrier is pressed, the positioning portion is pushed up along the side wall surface.

According to a ninth aspect of the present invention, there is provided an automatic component press-fitting device according to the first, second, or third aspect of the present invention, which detects whether or not a component is positioned on the positioning portion. A sensor is provided.

According to a tenth aspect of the present invention, there is provided the automatic component press-in device according to the first, second, or third aspect, wherein the press-in tool is reciprocated by a magnet rodless cylinder, and The part heated by the heating unit is conveyed to the positioning unit by the conveyance unit from the time when the press-fitting of the part into the final part embedding hole of the work is completed to the time when the embedding into the next work is started. Is held in a position where it can be prevented.

According to an eleventh aspect of the present invention, there is provided an automatic component press-in device according to the first, second, or third aspect, wherein the press-in tool is reciprocated by a magnet type rodless cylinder, and The part heated by the heating unit is conveyed to the positioning unit by the conveyance unit from the time when the press-fitting of the part into the final part embedding hole of the work is completed to the time when the embedding into the next work is started. Is held at a position where it can be prevented, and the holding portion is located on the outer periphery near the lower end of the elongated shaft that can be inserted into the screw hole of the component,
A locking ring having an outer diameter larger than the shaft, an outer diameter larger than the screw hole of the component, and a restoring force capable of expanding and contracting the diameter is provided.

[0019]

(Embodiment 1) A first embodiment of an automatic component press-in device according to the present invention will be described in detail with reference to FIGS. This automatic component press-fitting device includes a work table 2 on which a workpiece 1 is placed, a transport body 4 for transporting the components 3 sent out from a parts feeder 21 in a line, and heating the components 3 while the components 3 are being transported. A heating unit 5, a positioning unit 6 for positioning the heated component 3 at a predetermined position, a holding unit 7 for holding and releasing the component 3 positioned on the positioning unit 6, and a holding unit for pushing the holding unit 7 down. The work 3 includes a press-fitting tool 9 for pushing the component 3 held by the component 7 into the component embedding hole 8 of the work 1, a worktable 2, a holding unit 7, and a control unit 10 for controlling operations of the press-fitting tool 9. Except for the table 2 and the control unit 10, three sets are provided.

In FIG. 1, the X-axis rail 2 is placed on the table 22.
3 are provided in parallel with each other, an X-axis screw shaft 24 is provided between the two X-axis rails 23, and a cover 25 is put thereon,
An X-axis moving table 26 is provided on them, and when the X-axis screw shaft 24 rotates forward, the X-axis moving table 26 moves to the X-axis rail 23.
Along the left and right sides, and when the X-axis screw shaft 24 rotates in the reverse direction, it moves in the opposite direction. Further, two Y-axis rails 27 are placed on the X-axis moving base 26.
Are provided in parallel with each other and in a direction orthogonal to the X-axis rail 23, and a Y-axis screw shaft 28 is provided between the two Y-axis rails 27.
, And a cover 29 is placed thereon, and a Y-axis moving table 30 is provided thereon. When the Y-axis screw shaft 28 rotates forward, the Y-axis moving table 30 is moved along the Y-axis rail 27 to the left or right. It moves to one side and moves in the opposite direction when the Y-axis screw shaft 28 rotates in the reverse direction. This allows
The work table 2 provided on the Y-axis moving table 30 can reciprocate in the X-axis direction and the Y-axis direction.

The work table 2 is for setting the work 1, and the work 1 is easily set by molding a hard rubber by molding or by resin molding. As shown in FIG. 2, a suction port 31 is provided on the upper surface of the worktable 2, and a suction hose 32 is connected to the back side of the work table 2, and a suction mechanism 11 is provided. When the inside of the suction hose 32 is sucked, the suction port 31 is also sucked, and the work 1 placed on the worktable 2 is sucked by the suction port 31 and adheres to the suction cup 33 attached to the suction port 31 to perform the work. The work 1 is horizontally fixed to the work table 2 while being fixed to the work table 2 while correcting distortion, deformation, bending, and the like of the resin work 1. The suction hose 32 is movable so as to follow the movement of the work table 2 in the X-axis and Y-axis directions, so that it is not entangled or broken.

The work 1 may be the same as the conventional one, or may have a new shape or structure. However, when a heated metal part is pushed in, it is softened, bites into the part, and is made of a resin. It is made of hard rubber. One example is a resin case or cover of an electronic device, which usually has a protrusion h projecting upward as shown in FIG. 14, and a component embedding hole f in the center of the protrusion h. Is open. This part embedding hole f has a uniform diameter from top to bottom as shown in FIG. 14A, and a large-diameter hole j is formed at the upper part as shown in FIG. In some cases, a small diameter hole k having a small diameter is communicated.

There are various shapes and structures of the components to be press-fitted into the component embedding holes 8 of the workpiece 1. Examples of the components are female screws as shown in FIG. 14 (a) and FIG. 14 (c). There is a female screw as shown. The female screw shown in FIG. 14A is formed in a taper whose outer peripheral surface tapers from top to bottom, and a concave g for biting resin is formed on the outer peripheral surface thereof.
The screw hole d is penetrated in the center. FIG.
The female screw shown in (c) has a flange l formed at the upper part, a cylindrical part m smaller in diameter than the flange l is formed below the female screw, a concave g for biting resin is formed on the outer peripheral surface thereof, and the screw is formed at the center part. The hole d is penetrated.

The components 3 are sent out from the parts feeder 21 to the carrier 4 one by one in a line with their orientations upward.
As shown in FIGS. 4B and 4C, the transport body 4 has a transport groove 41.
The part 3 previously sent out into the conveying groove 41 is pushed and conveyed by the part 3 sent out later. Although the shape of the transport groove 41 varies depending on the shape of the component to be transported, as an example, the one shown in FIG. 3C is for transporting a component having the shape shown in FIG. Is formed in a rectangular shape with an upward opening. As another example, the one shown in FIG. 3D is for transporting a part having the shape shown in FIG. 8C, and the wide groove 42 in which the flange L is guided according to the shape of the part. And a narrow groove 43 narrower than that.

The component 3 conveyed by the carrier 4 is sent to a heating section 5 provided at the tip of the carrier 4 and heated. The heating unit 5 is provided with a groove-shaped passage 51, and the passage 51
The part 3 can pass through the inside of the
Heaters are embedded in both outer side walls of the device so that the parts 3 passing through the passage 51 are heated to about 200 to 500 ° C. during the passage. The shape of the passage 51 is also adapted to the shape of the component 3 passing through the passage 51, similarly to the shape of the transport groove 41 of the transport body 4.

The component 3 heated by the heating unit 5 is sent to a positioning unit 6 provided ahead of the component 3. Positioning unit 6
As shown in FIG. 4, a pin 5
3 is formed on a metal block 54 rotatably mounted. As shown in FIG. 5, the positioning portion 6 forms a recess 61 which is one step lower than the bottom surface of the passage 51 of the heating portion 5 in each of the two blocks 54, and the side wall surface 13 of the recess 61.
Is formed on a slope that is gradually inclined outward from bottom to top, and when the block 54 is pulled up by a spring 55 and held horizontally as shown in FIG. The recesses 61 are abutted to form a circular recess capable of supporting the component 3. The concave portion 61 is about 0.1 mm lower than the bottom of the passage 51 of the heating section 5, and the inclination angle of the side wall surface 13 is preferably about 1 degree although it varies depending on the angle of the outer peripheral surface of the component 3. In this way, the recess 61 is lowered one step,
5A, the part 3 extruded from the passage 51 of the heating unit 5 to the positioning part 6 is inclined with the extruding direction tip downward as shown in FIG. 5A, and the outer peripheral surface of the part 3 is inclined. The upper part of the outer peripheral surface 34 of the subsequent part 3 is pressed against the part 34, and is pushed by the following part 3 as it is, and is pushed up along the inclination of the side wall surface 13, so as to rise one step higher than the subsequent part 3. When the component 3 rises in the positioning portion 6 in this manner, the press-fitting tool 9 for lowering the component 3 does not push the upper surface of the next succeeding component 3 but reliably pushes down only the upper surface of the floating component 3. be able to.

When the component 3 positioned on the positioning portion 6 is pressed down by the press-fitting tool 9, the block 54 rotates downward with the pin 53 to which the block 54 is attached as a rotation axis as shown in FIG. And open, part 3 is work 1
Is pressed down to the component embedding hole 8 and press-fitted. Further, a component sensor for detecting whether or not the component 3 is positioned is disposed or built in the vicinity of the positioning unit 6, and the component 3 is sent to the positioning unit 6 by the component sensor. When it is detected that the press-fitting tool 9 is not pressed, the press-fitting tool 9 does not descend, and the press-fitting tool 9 is lowered only when the component 3 is fed into the positioning portion 6 so that the press-fitting tool 9 does not hit without hitting. is there.

The component 3 positioned on the positioning section 6 is held by the holding section 7. 1 and FIGS. 3 to 7
Is attached to the tip of the press-fitting tool 9 as shown in FIG. 1 and FIGS. 3 to 5, a heat-resistant plastic tube is used. The tube is slightly thicker than the screw hole 62 of the component 3, and its tip is tapered diagonally. Thus, the tip portion is easily inserted into the screw hole 62, and when inserted into the screw hole 62, the outer peripheral surface of the tube comes into contact with the inner peripheral surface of the screw hole 62 so that the component 3 is held.

The holding portion 7 shown in FIG. 6 is of an air suction type. A suction hole 64 (about 1 mm in outer diameter) and a branch hole 65 (outer diameter is suction The same as or smaller than the hole 64).
A disk-shaped auxiliary tool 15 having communication holes 66 opened at equal intervals on the bottom surface of the support portion 63 is attached to the bottom surface of the support portion 63 with screws 67, and the communication holes 66 are communicated with the respective branch holes 65. The diameter of the head 68 of the component 67 is made slightly smaller than the diameter of the screw hole 62 of the component 3 so that the head 68 fits into the screw hole 62 when the holding portion 7 is pressed against the upper surface of the component 3. is there. With such a structure, when the holding portion 7 is lowered, the head 68 of the screw 67 serves as a positioning guide and is first fitted into the screw hole 62 of the component 3, and then the auxiliary tool 15 is attached to the upper surface of the component 3. Pressed to. In this state, when the inside of the suction hole 64 is sucked by an external suction device, the inside of the branch hole 65 and each communication hole 66 is also sucked, and the auxiliary tool 1
The component 3 against which the component 5 is pressed can be sucked and held, and when the suction is released, the holding is released. The outer diameter of the auxiliary tool 15 shown in FIG. 6 is larger than the outer diameter of the upper surface of the component 3 and slightly smaller than the large-diameter portion 14 of the component embedding hole 8 of the work 1 so that the sucked component 3 is removed. The auxiliary tool 15 is fitted tightly into the large-diameter portion 14 of the component embedding hole 8 when press-fitted. By the way, when the outer diameter of the distal end of the support part 63 is about 6 mm, the diameter of the large diameter part 14 of the component embedding hole 8 is about 4 mm, and the depth is about 0.3 mm, the diameter of the auxiliary tool 15 is about 4 mm. The thickness is preferably about 0.3 mm. The auxiliary tool 15 can be replaced when worn due to repeated use.

When the holding section 7 is of the air suction type as shown in FIG.
It is desirable that ultrasonic waves be transmitted to the entire holding unit 7 via the, and the component 3 held by the holding unit 7 be pushed into the component embedding hole 8 of the work 1 while vibrating. That is, if the component 3 is pressed into the component embedding hole 8 of the work 1 while being vibrated, the component 3 is press-fitted and fixed in the component embedding hole 8 without heating the component 3 and softening the inner wall of the component embedding hole 8. Therefore, there is no need to provide the heating unit 5.

The holding portion 7 shown in FIG. 7 uses a metal pipe, and a slit 75 is formed in a portion of the diameter of the tapered metal pipe 69 in a vertical direction, and when the metal pipe 69 is pressed from the outside, the metal pipe is pressed. When the outer diameter of the pipe 69 is reduced, the spring is provided with a spring characteristic so that the outer diameter can be restored to the original outer diameter when the pressurization is released. Part 3 close to hole 62
Is held, and when the screw is pulled out from the screw hole 62, the original outer diameter is automatically restored. In this holding part 7, a ring-shaped auxiliary tool 15 is attached around the center in the vertical direction, and when the held component 3 is pressed into the component embedding hole 8 of the work 1, the auxiliary tool 15 is Large diameter part 1
4 so as to fit closely.

The holding portion 7 may be other than those shown in FIGS. 1 and 3 to 7, and is made of, for example, an open collet chuck, a spring open chuck, or a shape memory alloy whose outer diameter changes due to heat. There are also pipes,
It may be the one shown in FIG. 10 described later.

The above-described X-axis moving table 26 and Y-axis moving table 3
0, the operation of the press-in tool 9 and the like, the timing thereof, etc.
Is controlled by The control unit 10 controls the CN as shown in FIG.
The control box 72 is programmed with various conditions such as the positioning of the work table 2 and its moving speed, and the supply and press-fitting speed of the parts 3.
When the controller 71 operates, the X-axis moving base 26, the Y-axis moving base 30, the press-fitting tool 9 and the like perform predetermined operations. The control unit 10 is a foot-operated start switch 7 shown in FIG.
When the step 3 is depressed, the engine is started and a predetermined command is issued, the X-axis moving base 26, the Y-axis moving base 30, the press-fitting tool 9 and the like are operated. 7
Stopping is continued until step 3 is stepped on.

The operation at the time of using the automatic component press-in device of the present invention is as follows. . The parts 3 are sent out from the parts feeder 21 to the carrier 4 in a certain direction, conveyed by the carrier 4 and sent to the heating unit 5, heated while passing through the heating unit 5, and sent out to the positioning unit 6. Is positioned. This is always done. . Put the work 1 on the worktable 2 and set the start switch 73
, The work 1 on the work table 2 is sucked by the suction mechanism 11 of the work table 2, and the work 1 is fixed to the work table 2 while distortion and bending of the work 1 are corrected. . Based on the control from the control unit 10, the X-axis moving base 26,
When the Y-axis moving table 30 moves and the component embedding hole 8 of the work 1 comes below the positioning section 6, the movement of those tables stops. . The press-fitting tool 9 descends based on the control from the control unit 10, and presses the holding unit 7 positioned on the positioning unit 6 against the component 3, and sucks the component 3 by the holding unit 7. Hold. . The press-in tool 9 continues to descend and pushes down the part 3. At this time, since the block 54 is opened downward, the press-fitting tool 9 descends until the component 3 held by the holder 7 is pushed into the component embedding hole 8 of the work 1 and press-fits the component 3 to a predetermined depth. The component 3 softens the peripheral wall of the component embedding hole 8, and the softened resin adheres to the outer peripheral surface of the component 3. During this time, the heated component 3 sent from the heating unit 5 abuts on the outer peripheral surface of the press-fitting tool 9 and is not fed any more, but stops at that position. Also, the block 54 is kept open. . When the press-fitting tool 9 is pulled up, the holding portion 7 comes out of the component 3 press-fitted and fixed in the component embedding hole 8 and the holding portion 7 and the press-fitting tool 9 are removed.
Rises. When returning to the original position (above the block 54), the block 54 closes and returns to the original state, and only the earliest part 3 of the heated parts 3 is formed in the block 54 from the heating unit 5. It is sent to the positioning section 6 and positioned. During this time, the X-axis slide 26 and the Y-axis slide 30 move to set the component embedding hole 8 of the work 1 in which the component 3 is to be embedded next below the positioning portion 6. . Hereinafter, the above operations (1) to (4) are repeated, and the component 3 is press-fitted and fixed in the component embedding hole 8 at a predetermined position of the work 1. In the above description of the operation, the operation of one set of the parts feeder 21, the carrier 4, the heating unit 5, and the press-fitting tool 9 has been described.
The three sets of parts feeder 21, carrier 4, heating unit 5, and press-fitting tool 9 shown in FIG. 1 can be operated simultaneously. By doing so, different types of components 3 can be simultaneously pressed into different component embedding holes 8 by the three press fittings 9. If the number of parts feeder 21, carrier 4, heating unit 5, and press-fitting tool 9 is increased, more types of components 3 can be press-fitted at one time. Also, the parts feeder 21,
By exchanging the carrier 4, the heating unit 5, and the press-fitting tool 9 with different ones, it is possible to press-fit different types of components 3.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIG. Fig. 8
As shown in the figure, a block 54 disposed at the end of the heating section 5 is attached to one axial end of two rods 77 penetrating through the case 76, and the block 54 is formed on the part 3 on the positioning section 6 formed thereon. When the press-in tool 9 is inserted and pressed down by the press-in tool 9, it rotates downward, and when the press-in tool 9 rises and returns above the block 54, it rotates in the opposite direction to the previous one and returns. . Further, each of the opposite ends of the rod 77 is provided with an arm 78 protruding downward, and the arms 78 are connected to each other by a coil spring (return tool) 16 so that the block 54 opened downward is It is designed to be pulled back upward. When the rod 77 is housed in the case 76 in this way, the structure is simplified,
The rod 77 is less likely to become dirty and dust adhered to the rod 77, which is less likely to cause malfunction or failure.

(Embodiment 3) FIGS. 9A and 9B show a third embodiment of the present invention. The basic structure of this automatic component press-fitting device is the same as that of the first embodiment, except that the press-fitting tool 9 is reciprocated by a magnet type rodless cylinder 17. As shown in FIG. 9A, the rodless cylinder 17 has an upper passage 80 formed at an upper portion of a cylindrical cylinder 79 and a lower passage 81 formed at a lower portion, and an internal magnet 82 is inserted into the cylinder 79 so as to be able to move up and down. Then, when air is supplied from the upper passage 80 into the cylinder 79 and the air in the cylinder 79 is exhausted from the lower passage 81, the internal magnet 82 in the cylinder 79
Moves downward in the drawing, and conversely supplies air into the cylinder 79 from the lower passage 81 and the cylinder 7 from the upper passage 80.
9 is exhausted, the internal magnet 82
Move upward. As the internal magnet 82 moves up and down, the external magnet 83 that is in contact with the outer peripheral surface of the cylinder 79 moves up and down, and further, the outward U-shaped support 85 fixed to the external magnet 83 moves up and down. At the same time, the press-fitting tool 9 supported by the support 85 also moves up and down in the same direction. The press-fitting tool 9 is penetrated through the hole 84 of the support 85,
Springs 87 are arranged above and below a flange 86 fixed in the middle of the press-fitting tool 9 in the axial direction, and are supported by a support 85. By disposing the spring 87, when the press-fitting tool 9 is lowered to press-fit the component 3 held by the holding portion 7 into the component embedding hole 8 of the work 1 or when the press-fitting tool 9 is lifted, When a predetermined force or more acts in the axial direction of the press-fitting tool 9 for some reason, the force is absorbed by the spring 87, and no excessive force is applied to the press-fitting tool 9, the component embedding hole 8 or the like. Damage is buffered.

Embodiment 4 FIGS. 10 and 11 show a fourth embodiment of the present invention. The basic configuration of this automatic component press-fitting device is the same as that of the first embodiment. The difference is that the holder 7 has a structure as shown in FIG. 10 has a fitting groove 88 formed on the outer peripheral surface near the lower end of the shaft 18 whose outer diameter is slightly smaller than the inner diameter of the screw hole 62 of the component 3 and which can be inserted into the screw hole 62. The locking ring (C ring) 19 is fitted in the groove 88. The tip of the holder 7 is tapered so that it can be easily inserted into the screw hole 62 of the component 3. The outer diameter of the locking ring 19 is made slightly larger than the inner diameter of the screw hole 62 of the component 3, and is provided with elasticity in the radial direction so that the outer diameter expands and contracts when a force is applied from the outside in the radial direction. It is.

When the holder 7 is lowered as shown in FIG. 11 (a) and its tip is inserted into the screw hole 62 of the component 3, the outer peripheral surface of the locking ring 19 initially becomes the end of the screw hole 62. 11B, and when the holding portion 7 is further lowered, FIG.
As shown in the figure, the locking ring 19 is pushed in the radial direction by the end of the screw hole 62 to reduce the outer diameter, fits into the screw hole 62, and the outer peripheral surface of the locking ring 19 is The component 3 is held in close contact with the inner peripheral surface. When the holding portion 7 is further depressed in this state, the block 54 supporting the component 3 is opened, and the component 3 is pushed into the component embedding hole 8 and the press-fitting tool 9 is pressed.
Is pulled up, the holding portion 7 is locked together with the locking ring 19 in the screw hole 6.
2, the component 3 remains in the component embedding hole 8, and the press-fitting is completed. The locking ring 19 is not limited to the C-ring, but may be of any type as long as it is pushed into the screw hole 62 of the component 3 and comes into close contact with the inner peripheral surface thereof, and when it is pulled out from the screw hole 62, the outer diameter increases due to the restoring force. , May be other.

(Embodiment 5) FIGS. 12 and 13 show a fifth embodiment of the present invention. This embodiment is basically the same as the automatic component press-fitting device of the first embodiment, and has the following additional functions. After the press-fitting of the component 3 into the final component embedding hole 8 among the many component embedding holes 8 of one work 1 is completed, embedding of the component 3 into the component embedding hole 8 of the next work 1 is started. Until the heated part 3 is sent out to the positioning part 6 and stopped by the press-fitting tool 9 so as to wait in the heating part 5 so that the part 3 is not heated and cooled even during the waiting. It is. For this purpose, as shown in FIG. 12, a holding plate 90 is projected from the side surface of an external magnet 89 attached to the magnet type rodless cylinder 17 so as to be able to move up and down, and the tube 92 of the two air cylinders 91 is provided on the holding plate 90. And a support plate 94 is attached to the tip of the rod 93 of each air cylinder 91. Further, the press fitting 9 is inserted into the holding plate 90 and the support plate 94.
, And the press-fitting tool 9 is slidable without being fixed to the holding plate 90, and is fixed to the support plate 94.
In this automatic component press-in device, when the external magnet 89 is moved up and down by the magnet rodless cylinder 17, the holding plate 9
The 0-air cylinder 91-the support plate 94 is moved up and down, and the press-fitting tool 9 is also moved up and down with the movement of the support plate 94, so that the component 3 is press-fitted into the component embedding hole 8. At this time, the air cylinder 91
The press-fitting tool 9 is reciprocally driven in a state where the rod 93 is contracted,
Parts 3 are inserted into all of the many component embedding holes 8 of one workpiece 1.
After the press-fitting is completed, the press-fitting tool 9 is pulled up halfway by the magnet type rodless cylinder 17, and the rod 93 of the air cylinder 91 is extended to push down the press-fitting tool 9 lower than usual. As shown in FIG. Stops at a position where the outer peripheral surface of the heating unit 5 closes the outlet of the passage 51 of the heating unit 5, stops sending out the components 3 in the passage 51, and allows the components 3 to wait in the passage 51.

As described above, all necessary component embedding holes 8
The work 1 into which the components are press-fitted is taken out of the worktable 2. Instead, when the rod 93 of the air cylinder 91 is retracted after the next work 1 is set on the work table 2, the press-in tool 9 rises to a normal height, and the passage 5 by the press-in tool 9 is moved.
The blockage of 1 is released, and the heated component 3 is sent to the positioning section 6. Thereafter, the press-fitting tool 9 is moved up and down as in the previous case, and the press-fitting of the component 3 into the component embedding hole 8 of the new work 1 is restarted. For this reason, when the work 1 is replaced on the worktable 2, the heated component 3 surely stands by at a predetermined position,
Heating is continued, and the temperature of the heated component 3 does not decrease.

The magnet type rodless cylinder 17
The link operation between the air cylinder 91 and the air cylinder 91 can be realized, for example, as follows. As shown in FIG.
The object 95, which is painted in black and white at regular intervals, is attached or printed on the outer peripheral surface of the object 9.
ON / OF by detecting its black and white part alternately near 5
An optical sensor 96 that outputs the F signal is arranged,
The ON / OFF signal is monitored by the control unit 10. When the ON / OFF signal is input a plurality of times, the control unit 10 determines that the press-fitting tool 9 is normally lifted and lowered, and
If the N / OFF signal is not input for a predetermined time, it is determined that the press-in tool 9 has completely risen or lowered, and the number of times of ascending or descending or descending is counted. After finishing the operation, the air cylinder 91
In the middle of pulling down the press-fitting tool 9 which is pushing down the part 3 and pulling down, the rod 93 of each air cylinder 91 is extended, and the press-fitting tool 9 closes the outlet of the passage 51 of the heating unit 5. And then a predetermined time (time required to replace work 1 on work table 2)
Is elapsed, the rod 93 of the air cylinder 91 is contracted to program the press-fitting tool 9 to a normal height. The maximum stroke of the air cylinder 91 is preferably about 20 mm.

The work table 2 is moved in the X-Y axis direction by using the detected object 95 and the sensor 96 so that the component embedding hole 8 of the work 1 is positioned below the press-in tool 9. It is also possible. Specifically, the control unit 10
As described above, the part 3 is inserted into the part embedding hole 8 of the work 1.
When it is determined that the press-fitting tool 9 after the press-fitting is completely lifted, the work 1 is moved to the drive mechanism of the worktable 2 such that the component embedding hole 8 next to the work 1 is located immediately below the press-fitting tool 9. It is programmed to output the instruction to be performed.

If the object to be detected 95 is merely painted in white and black, the height of the work 1 is different, and the amount of elevation of the press-in tool 9 is larger than the width of the white or black portion of the object to be detected 95. When the number decreases, one of the ON / OFF signals remains output, so that the control unit 10 cannot detect the elevation of the press-fitting tool 9. However, as described above, the detection object 95 is painted white and black at regular intervals. There is no such problem if it is divided.

[0044]

According to the first aspect of the present invention, the automatic component press-fitting apparatus has the following effects. 1. Since it is of an automatic type, parts can be accurately and quickly pressed into a work. 2. Since it is an automatic type, there is no part press-fitting even if there are many press-fitting points in the work. 3. Since the parts are heated by the heating unit during transportation, there is no need for preparation for heating as in the conventional case. 4. Since various types of components can be press-fitted into the work at the same time, the cost can be reduced by 30 to 40% compared to an apparatus that can press-fit only one type of component. 5. Since it is an automatic type, it is possible to press-fit different types of parts into a work at the same time. 6. By simply exchanging the parts feeder, the carrier, the heating unit, and the press-fitting unit, it is possible to press-fit components having different shapes and structures into the work. 7. Even if there are many press-fit locations in one work, press-fitting is not forgotten. 8. Since it is an automatic type, there is no variation in press-fitting, the finish is uniform, and defects are less likely to occur. 9. Since the work table on which the work is set is moved in the X-axis and the Y-axis, there is little displacement of components. 10. Since it is an automatic type, there is almost no injuries to workers during the work. 11. The positioning of the component by the positioning portion and its release are reliable and easy.

According to a second aspect of the present invention, there is provided an automatic component press-fitting device, wherein a component is vibrated by vibrating a holding portion by ultrasonic waves.
Since the component can be pushed into the component embedding hole by the vibration, the component can be reliably pressed into the component embedding hole without heating the component.

According to a third aspect of the present invention, there is provided an automatic component press-fitting device, wherein a component is vibrated by vibrating a holding portion by ultrasonic waves.
The component can be pushed into the component embedding hole by the vibration,
In addition, since the positioning portion is openable and closable, the component can be securely pressed into the component embedding hole without heating the component, and the positioning and release of the component by the positioning portion are reliable and easy.

According to a fourth aspect of the present invention, there is provided an automatic component press-fitting device according to any one of the first to third aspects, wherein the press-fitting tool is reciprocated by a magnet type rodless cylinder. In addition to the above effects, there is an effect that the press-in tool can be raised and lowered at high speed and smoothly.

According to a fifth aspect of the present invention, there is provided an automatic component press-fitting device according to any one of the first to third aspects, wherein the holding portion has an elongated shaft capable of being inserted into a screw hole of the component. In addition to the above-described effect, even in the case of a small component in addition to the above-described effect, a locking ring having a larger outer diameter than the shaft and a larger outer diameter than the screw hole of the component and having a restoring force capable of expanding and contracting the diameter is provided near the lower end of the component. It can be securely held by the holding part,
This has the effect that the component does not drop from the holder during the press-fitting.

According to a sixth aspect of the present invention, there is provided an automatic component press-in device according to any one of the first to third aspects, wherein the component is press-fitted into a final component embedding hole of one work. Is completed, the press-fitting tool closes the outlet of the passage of the heating unit, and stops feeding of the component heated by the heating unit until the embedding of the component into the next work is started. Therefore, in addition to the above effects, there is the effect that the heated component waits in the passage before the embedding of the component into the next work is started and the temperature does not decrease.

According to a seventh aspect of the present invention, there is provided an automatic parts press-fitting apparatus according to any one of the first to third aspects, wherein the work is suction-fixed to a worktable from the back side thereof. Since the suction mechanism is provided, in addition to the above-mentioned effects, distortion and deformation of the work are corrected, and the component is pressed into the component embedding hole vertically, so that defects such as oblique driving do not occur.

According to an eighth aspect of the present invention, there is provided an automatic component press-in device according to any one of the first to third aspects, wherein the positioning portion is one step lower than the transporting body in front thereof. And because the side wall surface against which the parts are pressed is tapered so that it gradually expands outward toward the top,
In addition to the above-described effects, even if components are continuously sent to the positioning unit, there is an effect that adjacent components do not overlap, and a rear component is not excessively pressed into the work.

According to a ninth aspect of the present invention, there is provided an automatic component press-fitting device according to any one of the first to third aspects, wherein the component is configured to detect whether or not the component is positioned on the positioning portion. Since the sensor is provided, in addition to the above-mentioned effects, there is an effect that the press-fitting tool does not hit and the component does not press-fit into the component embedding hole.

According to a tenth aspect of the present invention, there is provided an automatic component press-in device according to any one of the first to third aspects, wherein the press-in tool is reciprocated by a magnet type rodless cylinder. Since the outlet of the passage of the heating section is closed and the parts heated by the heating section are stopped from being sent until the embedding of the part into the next work is started, in addition to the above-described effects, the press-fitting tool Can be raised and lowered at a high speed and smoothly, and there is an effect that the heated component waits in the passage before the embedding of the component into the next work is started and the temperature does not decrease.

According to an eleventh aspect of the present invention, there is provided an automatic component press-in device according to any one of the first to third aspects, wherein the press-in tool is reciprocated by a magnet type rodless cylinder to heat the component. The outlet of the passage of the part is closed, and until the embedding of the part in the next work is started, the part heated by the heating part is stopped from being sent out, and the holding part is screwed into the screw hole of the part. The above-described effect is provided because a locking ring having a larger outer diameter than the shaft, a larger outer diameter than the screw hole of the component, and a restoring force capable of expanding and contracting the diameter is provided near the lower end of the insertable elongated shaft. In addition, the press-in tool can be raised and lowered at high speed and smoothly, and the heated component waits in the passage before the embedding of the component into the next work is started, and the temperature does not decrease. small Also can be reliably held by the holding unit in goods, components having the effect that it no falling from the holder during the press-fitting.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a first embodiment of an automatic component press-in device of the present invention.

2A is a perspective view showing a suction mechanism of the automatic component press-fitting device of the present invention, and FIG. 2B is a cross-sectional view taken along line aa of FIG.

3 (a) is an explanatory view showing a positional relationship between a transporting body, a heating unit and a positioning unit of the automatic component press-in device of the present invention, FIG. 3 (b) is a front view thereof, and FIG. 3 (c) shows an example of the transporting body. FIG. 4D is a lateral cross-sectional view, and FIG.

4A is a perspective view showing a positional relationship between a heating unit and a positioning unit, and FIGS. 4B and 4C are explanatory diagrams of the operation of the positioning unit and the press-fitting tool.

FIGS. 5A and 5B are explanatory diagrams of a method of conveying and press-fitting parts.

6A is a longitudinal sectional view showing an example of a press-fitting tool and a press-fitting state of a part by the press-fitting tool, FIG. 6B is a cross-sectional view of an auxiliary tool,
(C) is an explanatory view showing the positional relationship between the press-fitting tool and the auxiliary tool of (a).

7A is a longitudinal sectional view showing another example of the press-in tool and a press-fitting state of the component by the press-in tool, and FIG. 7B is an explanatory view showing a positional relationship between the holding portion and the auxiliary tool in FIG.

FIG. 8 is an explanatory view showing a positioning unit according to a second embodiment of the present invention.

FIG. 9A is an explanatory view of a magnet rodless cylinder according to the present invention, and FIG. 9B is an explanatory view showing an example of a support.

FIG. 10 is an explanatory view showing a holder according to a fourth embodiment of the present invention.

FIGS. 11A and 11B are explanatory views showing a holding state of a part by a holder.

FIG. 12 is an explanatory view showing a driving mechanism of a press-fitting tool according to a fifth embodiment of the present invention.

FIG. 13 is an explanatory diagram of a state in which the press-fitting tool according to the present invention closes a passage of a heating unit.

14A is an explanatory view of a conventional manual press-fitting method of a part into a work, FIG. 14B is an explanatory view showing another example of the work, FIG.
(C) is an explanatory view showing another example of a component.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 work 2 work table 3 parts 4 carrier 5 heating unit 6 positioning unit 7 holding unit 8 component embedding hole 9 press-in tool 10 control unit 11 suction mechanism 13 side wall surface 16 return tool 17 magnet rodless cylinder 18 shaft 19 locking ring

Claims (11)

[Claims] 1. A work table (2) on which a work (1) is set.
And a drive mechanism for moving the work table (2) in the X-Y axis direction, a transport body (4) for aligning and sending the component (3) to be pressed into the work (1), and transporting the component (3) A heating unit (5) for heating the heated part (3), a positioning part (6) for positioning the conveyed heated part (3) at a depressed position, and a heated part (3) set on the positioning part (6). Of the workpiece (1) set on the work table (2) by holding the holding part (7) capable of holding and releasing the workpiece and the part (3) held by the holding part (7) by lowering the holding part (7). Reciprocating press-fitting tool (9) that presses and press-fits into component embedding hole (8)
And a control unit (10) for controlling operations of the worktable (2), the holding unit (7), the press-in tool (9), etc., and a positioning unit (6).
When the part (3) held by the holding part (7) is opened by being pressed by the holding part (7) descending, the part (3) held down by the holding part (7) is pushed down, and the holding part (7) returns above the positioning part (6). An automatic component press-fitting device, characterized in that when the pressing by the holding portion (7) is released, the component is closed by the return tool (16). 2. A workbench (2) on which a work (1) is set.
And a drive mechanism for moving the work table (2) in the X-Y axis direction, a transport body (4) for aligning and sending the component (3) to be pressed into the work (1), and a transported component (3). ) At the depressed position, a holding part (7) capable of holding the component (3) set on the positioning part (6), and a holding part (7) by lowering the holding part (7). A reciprocating press-fitting tool (9) for pressing the component (3) held by the component (7) into the component embedding hole (8) of the work (1) set on the work bench (2); ), A control unit (1) for controlling the operation of the holding unit (7), the press-in tool (9), and the like.
0), wherein the holding portion (7) is vibrated by ultrasonic waves, and can be pushed into the component embedding hole (8) of the work (1) while vibrating the component (3) by the vibration. Automatic press-fitting device. 3. A work table (2) on which a work (1) is set.
And a drive mechanism for moving the work table (2) in the X-Y axis direction, a transport body (4) for aligning and sending the component (3) to be pressed into the work (1), and a transported component (3). ) At the depressed position, a holding part (7) capable of holding the component (3) set on the positioning part (6), and a holding part (7) by lowering the holding part (7). A reciprocating press-fitting tool (9) for pressing the component (3) held by the component (7) into the component embedding hole (8) of the work (1) set on the work bench (2); ), A control unit (1) for controlling the operation of the holding unit (7), the press-in tool (9), and the like.
0), the holding portion (7) is vibrated by ultrasonic waves, and can be pushed into the component embedding hole (8) of the work (1) while vibrating the component (3) by the vibration. 6) is opened by being pressed by the descending holding part (7), the part (3) held by the holding part (7) is pushed down, and the holding part (7) is raised above the positioning part (6). An automatic component press-fitting device, characterized in that the device is closed by a return tool (16) that returns to release the pressing. 4. A component automatic press-fitting device according to claim 1, wherein said press-fitting tool (9) is reciprocally driven by a magnet type rodless cylinder (17). Automatic press fitting device. 5. A component automatic press-fitting device according to claim 1, wherein said holding portion has an elongated shaft which can be inserted into a screw hole of said component.
A locking ring (19) having an outer diameter larger than the shaft (18), an outer diameter larger than the screw hole (62) of the part (3), and a diameter that can expand and contract, is provided on the outer periphery near the lower end of 8). An automatic component press-fitting device characterized by comprising: 6. An automatic component press-in device according to claim 1, wherein said press-in tool (9) is a component (3) inserted into a final component embedding hole (8) of said work (1). The part (3) heated by the heating unit (5) is transferred to the positioning unit (6) by the carrier (4) from the end of press-fitting to the start of embedding in the next work (1). An automatic component press-fitting device, which is held at a position where it can be prevented from being conveyed. 7. An automatic component press-fitting device according to claim 1, wherein the work table (2) sucks and fixes the work (1) from the back side thereof.
An automatic component press-fitting device having: 8. The automatic component press-in device according to claim 1, wherein the bottom surface of the positioning portion (6) is one step lower than the transport body (4) in front of the positioning portion, and the positioning portion (6). ) Is pressed against the part (3) conveyed by the carrier (4) against the side wall (13) of the side wall (1).
An automatic component press-fitting device characterized in that it has a tapered surface which gradually expands outward upward so as to be pushed up along 3). 9. The automatic component press-fitting device according to claim 1, wherein a component sensor for detecting whether or not the component (3) is positioned on the positioning portion (6) is provided. A featured automatic press-fitting device. 10. A component automatic press-fitting device according to claim 1, wherein said press-fitting tool (9) is reciprocated by a magnet type rodless cylinder (17), and said workpiece (1) is reciprocated. Final part embedding hole (8)
The next work (1) after the press-fit of the part (3) into the
Until the embedding of the component (3) is started, the component (3) heated by the heating unit (5) is held at a position where it can be prevented from being transported to the positioning unit (6) by the transport body (4). An automatic component press-fitting device. 11. The automatic component press-fitting device according to claim 1, wherein the press-fitting tool (9) is reciprocally driven by a magnet type rodless cylinder (17), and the workpiece (1) is removably driven. Final part embedding hole (8)
The next work (1) after the press-fit of the part (3) into the
Until the embedding of the component (3) is started, the component (3) heated by the heating unit (5) is held at a position where it can be prevented from being transported to the positioning unit (6) by the transport body (4). The holding portion (7) is provided with a screw hole (6) of the component (3).
An outer periphery near the lower end of the elongated shaft (18) which can be inserted into 2), having a larger outer diameter than the shaft (18), a larger outer diameter than the screw hole (62) of the component (3), and a retractable diameter. An automatic component press-fitting device comprising a locking ring (19) having a force.