JPH07279Y2 - Strain correction device for resin case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of Invention] (Field of Industrial Use) The present invention corrects distortions and the like of a resin case and holds the resin case in a state where the distortion is corrected. The present invention relates to a distortion correcting device for a resin case.

(Prior Art) As is well known, an automobile air conditioner is configured by connecting an intake unit, a cooler unit, and a heater unit, and the case of each unit is one case made of a resin material. And the other case are butted against each other.

Further, in recent years, automation of assembly work of both cases has been promoted in response to a request for improving production efficiency.

The concept of automation of the resin case assembling work is shown in FIG.

The lower case 2 is placed on a jig 3, and the jig 3 has projections 4 for restricting the placement position of the lower case 2.
Is provided. On the other hand, the upper case 1 is gripped by the gripping device 5, and in this state, the upper case 1 is conveyed to a position above the lower case 2. Next, the gripping device 5 is moved down toward the jig 3, and the lower end 1a of the upper case 1 is fitted to the inlay 2a formed in the lower case 2. Then, both cases are connected by fastening means such as screws, and the gripping device 5 is separated from the upper case 1, and the assembling work of the upper and lower cases 1 and 2 is completed.

The gripping device 5, as shown in FIG.
A plate 6 opposed to the plate 6, a hand portion 7 slidably provided on the plate 6, and a cylinder 9 for sliding the hand portion 7 via a connecting rod 8. A pin 10 protruding toward the upper case 1 is fixed to the hand portion 7, and the pin 10 is fixed to the upper case 1.
It is designed to be inserted into the blind hole 11 formed in the. Further, the entire gripping device 5 is connected to a transport device (not shown), which transports the grip device 5 to a position above the lower case 2 and directs the grip device 5 toward the lower case 2. It is configured to be mobile.

When the upper case 1 is gripped by the gripping device 5, first, the pin 10 of each hand portion 7 is inserted into the hole 11 formed in the upper case 1, and then the cylinder 9 is driven. Each hand portion 7 is slid outward through the connecting rod 8. Then, the pins 10 press the holes 11 outward in all directions, so that the upper case 1 is gripped by the pins 10.

(Problems to be solved by the invention) By the way, the resin case may be slightly deformed, such as distorted or twisted, under the influence of the outside air temperature or humidity after the completion of molding.

Such a slight deformation of the case does not cause any trouble at the stage when the assembling of both cases is completed.

However, at the stage of assembling both cases, a situation may occur in which both cases cannot be fitted due to the slight deformation. That is, as shown in FIG. 7, the slight deformation of the lower case 2 is corrected by placing the case 2 along the protrusion 4 on the jig 3, but the upper case 1 Since is simply gripped by the pin 10, it is not possible to correct deformation such as twisting. Therefore, the upper case 1
There is a case where a part of the lower end portion 1a of the above hits the lower case 2 and it becomes impossible to fit both cases.

If such a situation occurs, the assembly line will be stopped, and there is a problem that improvement in production efficiency is hindered.

Further, in the gripping device 5, the sliding pin 10 pushes the upper case 1 toward the outside so that the case 1
It has a structure for gripping. Therefore, in order for the pressing force of the pin 10 to act evenly on the upper case 1, the holes 11 must be arranged in a substantially square position and the heights of the holes 11 must be set to the same height. It was Further, the shape of the hole 11 is also limited to an equilateral triangle or a square. Therefore, there is a drawback that the range of selecting the shape of the case 1 is narrowed and the degree of self-mounting in designing the case 1 is reduced.

Further, since the upper case 1 is pressed in four directions when being gripped, the distortion of the upper case 1 may be further expanded, and the case where the both cases cannot be fitted is more likely to occur.

Moreover, since the upper case 1 is gripped without correcting the distortion, the force for holding the case 1 may be insufficient and the upper case 1 may fall off.

The present invention has been made in order to solve the problems associated with the above-mentioned conventional techniques, and corrects the distortion and the like of the resin case, and the distortion of the resin case that can hold the resin case with the distortion and the like corrected. The purpose is to provide a straightening device.

[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above object is to mount a case made of a resin material on a base and press the resin case on the base. A resin case distortion correction device for correcting distortion and the like of the resin case and holding the resin case in a state in which the distortion is corrected, wherein the resin case is relatively moved toward and away from the base. A pressing member that has a main body portion that is movably provided and a shaft that is fixed to the main body portion and that projects toward the base, and that is made of an elastic member and that abuts the outer peripheral edge of a hole formed in the resin case. A member is attached to the shaft, and a holding member that is made of an elastic member and that bulges in a direction substantially orthogonal to the axis of the shaft and presses against the inner surface of the hole is attached to the shaft. A straightening device of a resin case formed by providing a bulge means to pressure contact with the inner surface of the hole in the body portion.

Also, an inner shaft slidably inserted into the shaft and having one end portion protruding from the shaft toward the base, and an inner shaft driving means for moving the inner shaft toward and away from the base. A stopper facing the tip of the shaft is provided at the one end portion of the inner shaft, and the holding member is interposed between the stopper and the shaft. The swelling means may be configured by the stopper and the shaft.

(Operation) When the main body and the base are moved relatively close to each other, the pressing member and the outer peripheral edge of the hole come into contact with each other, and the resin case placed on the base is moved to the base via the pressing member. Is pressed by. This corrects the distortion and the like of the resin case.

Further, in this state, when the bulging means bulges the holding member in a direction substantially orthogonal to the axis of the shaft, the holding member comes into pressure contact with the inner surface of the hole. As a result, the resin case is held in a state where the distortion and the like are corrected.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a resin case distortion correcting device according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view showing an essential part of the embodiment.

As shown in FIG. 2, the distortion correcting device for a resin case according to the present embodiment has a main body 14 which is vertically movable with respect to a base 13, and the base 13 fixed to the main body 14. A shaft 15 projecting toward the shaft 15, and one end part of the shaft 15 slidably inserted into the shaft 15 from the shaft 15
Inner shaft 16 protruding toward and inner shaft driving means 17 for moving the inner shaft 16 up and down
And a case 12 made of a resin material is placed on a base 13, and the resin case 12 is pressed against the base 13 to correct the distortion of the resin case 12, and the distortion is corrected. It is configured to hold the resin case 12 in the opened state.

More specifically, as shown in FIG. 2, the resin case is
A blind hole 18 into which the tip of the shaft 15 is inserted is formed in the hole 12, and the outer peripheral edge of the hole 18 has a taper surface 18a.
Are formed. Further, the base 13 is a resin case 12
The resin case 12 has an inner surface shape when there is no deformation such as distortion or twisting, that is, an outer surface shape corresponding to the reference dimension of the resin case 12.

As shown in FIG. 1, the main body portion 14 has a plate 19 having a substantially rectangular shape.
20 and a predetermined distance from the plate 19 and the adapter 21
Is attached. Further, the main body 14 is fixed to the carrying device (not shown) via the adapter 21.
This transport device is similar to the one described above, in that
It is configured so that the main body 14 can be moved up and down toward the base 13 while being transported to a position above the base 13. In addition, on the upper end surface of the plate 19, the silica base plate 22
The shaft 15 is provided so as to penetrate the cylinder base plate 22 and the plate 19.

As shown in FIG. 2, the shaft 15 projects toward the base 13, and the tip portion thereof is a small diameter portion 15a.
A first rubber ring (corresponding to a pressing member) 23 made of an elastic member such as rubber is attached to the small diameter portion 15a. The rubber ring 23 is formed with a tapered surface 23a that abuts the tapered surface 18a of the hole 18. A through hole 24 for inserting the inner shaft 16 is formed at the center of the shaft 15.

The inner shaft 16 is slidably inserted in the through hole 24, and at one end portion protruding from the shaft 15 toward the base 13, a stopper 25 facing the tip of the shaft 15 is provided. . This stopper 25 and the small diameter part of the shaft 15
Second rubber rings (corresponding to holding members) 26, 26 made of an elastic member such as rubber are interposed between the first rubber ring 15a and the second rubber ring 15a.
The outer diameters of the stopper 25 and the second rubber ring 26 are formed slightly smaller than the inner diameter of the hole 18. On the other hand, the other end of the inner shaft 16 has a cylinder base plate 22.
It projects further upward and is connected to a rod 27 of a cylinder 17 (corresponding to inner shaft driving means).

The cylinder 17 is installed on a cylinder plate 29 attached to a cylinder base plate 22 via a collar 28. Then, by driving the cylinder 17, the inner shaft 16 is configured to move between the forward limit position and the backward limit position with respect to the base 13.

Particularly, the forward limit position and the backward limit position of the inner shaft 16 are set as follows. That is, when the inner shaft 16 moves to the forward limit position, the second rubber ring 26 is not compressed, while when it moves to the backward limit position, the second rubber ring 26 moves to the stopper 25 and the small diameter portion 15a. Both positions are set so as to be compressed between and to be pressed against the inner peripheral surface of the hole 18.

Then, the cylinder 17, the stopper 25, and the shaft
By means of 15, the second rubber ring 26 is compressed to swell in a direction substantially orthogonal to the axis of the shaft 15, and swelling means for pressing the ring 26 against the inner peripheral surface of the hole 18 is constituted. .

In FIG. 2, reference numeral “30” indicates a sensor attached to the cylinder plate 29, and reference numeral “31” indicates a cylinder.
17 shows sensor plates attached to 17 rods 27, respectively. The sensor 30 is a general proximity sensor, and detects the distance between the sensor plate 31 and the sensor plate 31 to determine whether the inner shaft 16 has moved to the forward limit position or the backward limit position. There is.

Next, the operation of the present embodiment will be described with reference to FIGS.

First, as shown in FIG. 3, the resin case 12 is placed on the base 13. The resin case 12 has a slight deformation Z such as distortion and twist under the influence of the outside air temperature or humidity after the completion of molding.

Next, the main body 14 is lowered toward the base 13, and the shaft 15
The tip portion of is inserted into the hole 18 of the resin case 12. At this time, the inner shaft 16 is moved to the forward limit position. Then, the main body 4 is further lowered.

Then, as shown in FIG. 4, the tapered surface 23a of the first rubber ring 23 attached to each of the four shafts 15 and the hole 1
The resin case 12 is pressed against the base 13 by coming into contact with the taper surface 18a of 8. As a result, the deformation Z of the resin case 12 is corrected and the reference surface can be provided on the resin case 12.

Next, as shown in FIG. 5, with the reference surface of the resin case 12 exposed, the cylinder 17 is driven to drive the inner shaft 16
Is moved to the reverse limit position, and the stopper 25 is pulled upward in the figure.

Then, the second rubber ring 26 includes the stopper 25 and the small diameter portion 15a.
Between them and bulges outward in the radial direction and comes into pressure contact with the inner peripheral surface of the hole 18. This allows the resin case 12
Will be held by the second rubber ring 26 with the deformation Z corrected. At this time, the second rubber ring 26
Is pressed against the inner peripheral surface of the hole 18 in the circumferential direction thereof, the force holding the resin case 12 is stronger than that in the case of pressing in one direction, and more than necessary force may be applied to the resin case 12. Nor. Further, since the shaft 15 is fixed to the main body 14 in accordance with the reference dimension position of the resin case 12, not only the above-mentioned correction of the Z-direction deformation but also the X-Y direction deformation can be easily corrected. be able to.

Thus, since the twisting of the resin case 12 can be corrected and the resin case 12 is not deformed when being held, when the two resin cases 12 are fitted to each other as shown in FIG. The assembly position does not shift, and it is possible to prevent the assembly line from stopping.

Further, the conventional gripping device 5 grips this case while maintaining the balance of the pressing force by the pin 10, but in the distortion correcting device for the resin case of this embodiment, each hole is
Since the force for holding the case is applied to each of the 18 pieces, there is no problem even if the hole shape is not a regular triangle or a square. Further, since it is not necessary to balance the holding forces, it is not necessary to form the holes 18 on the same reference plane, and by changing the size of the first rubber ring 23 indicated by the symbol "d" in FIG. The difference in height of the holes 18 can be absorbed.

As described above, the holes 18 formed in the resin case do not have to be set to the same height, and the shape thereof is not limited, so that the degree of freedom in designing the resin case 12 is improved. Become.

Further, since the resin case is manufactured by compressing the elastic member such as rubber under the condition that the distortion is corrected, the hole 18
It becomes difficult for the resin case 12 to slip with the inner peripheral surface of the resin case, and the resin case 12 can be prevented from falling off.

FIG. 6 shows a main part according to another embodiment of the present invention.

In the embodiment in this case, a ring 32 having an outer diameter substantially the same as that of the stopper 25 is loosely fitted to the inner shaft 16. A second rubber ring 26 is interposed between the ring 32 and the small diameter portion 15a of the shaft 15, and the ring 32 and the stopper 25
C made of resin material and partially cut between
The ring 33 is interposed.

In the embodiment constructed in this way, when the inner shaft 16 is pulled up, the resin C ring 33 is expanded by the stopper 25 and pressed against the inner peripheral surface of the hole 18, and the ring 32 and the shaft 15 are The second rubber ring 26 with the tip
Is compressed and comes into pressure contact with the inner peripheral surface of the hole 18.

In this way, the two points of the second rubber ring 26 and the resin C ring 33 are in pressure contact with the inner peripheral surface of the hole 18, and since one is made of resin, the holding force is stable and the holding position is stable. Can be further improved.

Although the cylinders 17 are connected to the inner shafts 16 in the above-described embodiments, the present invention is not limited to this case, and the continuous shafts shown in FIG. The rod 8 may be used to move the plurality of inner shafts 16 back and forth with respect to the base 13 by one inner shaft drive means 17.

Further, although the case where the main body 14 moves toward the base 13 is shown, conversely, even if the base 13 is configured to move toward the main body 14, the same effect can be obtained. It goes without saying that it will be done.

Further, the pressing member 23 and the holding member 26 are not limited to the illustrated shapes, but can be various shapes. Moreover, the swelling means is not limited to the illustrated structure, and may be any structure as long as the holding member 26 swells in a direction substantially orthogonal to the axis of the shaft 15 and presses against the inner surface of the hole 18. For example, the holding member 26 may be formed with a tapered surface, and the bulging means may be configured to bulge the holding member 26 while contacting the tapered surface.

[Effects of the Invention] As described above, according to the present invention, it is possible to correct the distortion and the like of the resin case and to hold the resin case in the corrected state.

[Brief description of drawings]

FIG. 1 is a perspective view showing a distortion correcting device for a resin case according to an embodiment of the present invention, FIG. 2 is a partial sectional view showing an essential part of the same embodiment, and FIGS. FIG. 6 is a sectional view conceptually showing the operation of an example, FIG. 6 is a sectional view showing an essential part according to another embodiment of the present invention, and FIG. 7 is a perspective view showing the assembling work of the resin case. FIG. 8 is a perspective view showing an example of the gripping device in FIG. 7. 12 ... Resin case, 13 ... Base, 14 ... Main body part, 15 ... Shaft, 16 ... Inner shaft, 17 ... Cylinder (inner shaft driving means), 18 ... Hole, 18a ... Tapered surface (outer peripheral edge), 23 ... No. 1 rubber ring (pressing member), 25 ... stopper, 26 ... second rubber ring (holding member).

Claims (2)

[Scope of utility model registration request] 1. A case (12) made of a resin material is used as a base (1).
3) Place it on the base (13) and put the resin case (1
A distortion correcting device for a resin case, which is configured to press 2) to correct the distortion or the like of the resin case (12) and to hold the resin case (12) in a state where the distortion is corrected. A main body (14) provided so as to be able to move toward and away from the base (13) relatively; and a shaft fixed to the main body (14) and protruding toward the base (13) ( And a pressing member (2) made of an elastic member and abutting against the outer peripheral edge (18a) of the hole (18) formed in the resin case (12).
3) is attached to the shaft (15), and a holding member (26) that is made of an elastic member and that bulges in a direction substantially orthogonal to the axis of the shaft (15) and presses against the inner surface of the hole (18) is provided on the shaft. A distortion correcting device for a resin case, which is attached to (15) and has swelling means for swelling the holding member (26) to press against the inner surface of the hole (18) in the main body (14). 2. An inner shaft (16) slidably inserted into the shaft (15) and having one end protruding from the shaft (15) toward the base (13); An inner shaft drive means (17) for moving the (16) toward and away from the base (13), and facing the tip of the shaft (15) at the one end portion of the inner shaft (16). Is provided, and the holding member (26) is interposed between the stopper (25) and the shaft (15). The inner shaft drive means (17) and the stopper (25 ) And the shaft (15) constitute the swelling means, and the strain correcting device for a resin case according to claim 1.