KR19980079753A - Reaction plate attachment structure to slat - Google Patents

Abstract

In addition to improving the propulsion efficiency of the slat, it is easy to manufacture, the manufacturing cost can be reduced, and also provides a reaction plate attachment structure to the slat that can reduce the operation noise.

In the slat conveyor in which the slat 1 itself is driven by a linear motor as a conductor on the secondary side and a magnetic circuit is formed in the slat, the reaction plate 2 and the pressing plate 3 made of an elastic material have a thickness. In the hollow portion 1A of the slat 1 in a state where the pressing plate 3 is elastically compressed in the thickness direction.

Description

Reaction plate attachment structure to slat

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment structure of a reaction plate to slats in a linear motor drive slat conveyor.

Conventionally, a linear motor such as that described in Japanese Patent Laid-Open No. 7-61570 is used as a driving means of a slat conveyor used for sorting work of articles.

This is a slat formed of metal such as aluminum as secondary conductor, and each slat connected endlessly by linear motor is directly driven by electromagnetic propulsion at the position of linear motor. Compared to driving the slats, there is less noise generating portion and there is an advantage of quiet operation.

However, the slat conveyor described in Japanese Laid-Open Patent Publication No. 7-61570 has low driving efficiency because the slat used as the secondary side of the linear motor is a nonmagnetic material such as aluminum, and in particular, the slide shoe slips on the slat. In the slat conveyor used as the sorting device inserted freely, the slide shoe installed in the slat is guided by the inclined guide rail disposed under the slat, and is configured to slide in the left and right direction as the slat moves. There was a problem that the driving force for countering the resistance when dispensing at the sorting position was insufficient.

Therefore, in order to solve this problem, the present applicant is Japanese Patent Application Laid-Open No. 7-270023, which proposes a technique for providing a reaction plate of ferromagnetic material constituting a magnetic circuit inside an aluminum slat.

According to this technique, compared to the case where no reaction plate is used, the force for pushing the slats of the linear motor can be increased up to three times, and a stable propulsion force can be obtained at all times. The propulsion force of the linear motor is not shortened with respect to the resistance generated when the slide shoe moves, and has the advantage of being able to perform a stable and stable sorting operation.

In the above-described invention of Japanese Patent Application Laid-Open No. 7-270023, as shown in Figs. 8 and 9, the reaction plates are divided into touch plates a1 and b1 and back metals a2 and b2. And a plurality of hollow portions d1 and d2 which are formed inside the slat c.

These touch plates a1 and b1 and the back metals a2 and b2 widen the opposing intervals by the screw members e1 and e2 that are operable from the outside of the slat c, so that the upper and lower portions of the hollow portions d1 and d2 are lower. Because of the structure of pressing and fixing the wall surface, the number of parts arranged in the slats c increases, and as a result, the total weight of the slats c increases, which causes a large driving propulsion force to be required for the linear motor for driving them. .

In addition, it is necessary to process the screw operation holes f1 and f2 for operating the screw members e1 and e2 from the outside of the slat c in the slat c, and at the time of assembly, the touch plate a1. Since each pair of, a2) and the back metals b1 and b2 need to be accurately positioned and fixed into the slats c, there is a problem in that it takes a lot of effort and time to manufacture and the manufacturing cost increases.

If the surface of the touch plates a1 and a2 and the back metals b1 and b2 and the wall surface of the slat c are bent or distorted due to manufacturing errors, they may be subjected to electromagnetic force fluctuating from the linear motor when the slat conveyor is driven. As a result, the touch plates a1 and a2 and the back metals b1 and b2 easily generate vibrations in the slats c, and the vibrations may cause noise during operation of the slat conveyors.

Therefore, the present invention further improves the above-described technique to improve the propulsion efficiency of the slats, and is easy to manufacture, the manufacturing cost can be reduced, and the reaction plate to the slats can reduce the operation noise. It is an object to provide an attachment structure.

1 is a cross-sectional view of a slat showing a first embodiment of the present invention;

FIG. 2 is a longitudinal sectional view showing a part of the slat seen from the arrow direction at the A-A line position in FIG. 1; FIG.

3 is a view showing a state before mounting the reaction plate and the pressing plate in the slat;

4 is a cross sectional view of a slat showing a second embodiment of the present invention;

5 is a cross sectional view of a slat showing a third embodiment of the present invention;

6 is a cross sectional view of a slat showing a fourth embodiment of the present invention;

FIG. 7 is a longitudinal sectional view showing a part of the slat at the B-B line position in FIG. 5; FIG.

8 is a cross sectional view of a slat showing an example of a reaction plate attachment structure to a slat in the prior art;

FIG. 9 is a longitudinal sectional view showing a part of the slat seen from the arrow direction in the X-X line position in FIG. 8; FIG.

* Explanation of symbols for the main parts of the drawings

1, 11: slat 1A, 1B, 1C, 11A: hollow part

2,14: reaction plate 3,4: pressing plate

5: adhesive 14A: middle part

14B: Both ends 15: Rivets

For this purpose, the reaction plate attachment structure to the slat of the present invention is applied to a slat conveyor in which the slat itself is driven by a linear motor as a conductor on the secondary side, and the reaction plate is formed to form a magnetic circuit in the slat. The invention according to claim 1 is press-fitted into the hollow part of the slat in a state where the reaction plate and the pressing plate made of an elastic material overlap in the thickness direction and the pressing plate is elastically compressed and deformed in the thickness direction.

Moreover, in invention of Claim 2, the press plate of Claim 1 is arrange | positioned at both surfaces of the thickness direction of a reaction plate.

In the invention according to claim 3, one side in the thickness direction of the reaction plate according to claim 1 is adjacent to the pressing plate, and the opposite side is fixed to the inner surface of the hollow part of the slat by an adhesive agent.

In addition, the invention according to claim 4 has a wide hollow portion in the center of the slat in the width direction, and at the same time the middle portion is disposed close to one side of the hollow portion facing up and down in the longitudinal direction, Both end portions are folded to the other side and bent, and a wide reaction plate is installed on the other side to be fixed with rivets.

In the invention according to claim 1, since the reaction plate is frictionally fixed to the pressing plate in the state of being subjected to the elastic compression deformation in the hollow portion of the slat, an electromagnetic force that fluctuates from the linear motor to the reaction plate inside the slat during vibration of the slat acts and vibrates. Even if this occurs, the vibration is immediately absorbed by the pressing plate, and noise generated by the vibration of the reaction plate is reduced.

In addition, in the invention according to claim 2 in which the pressing plate is disposed on both surfaces of the reaction plate in the thickness direction, the vibration of the reaction plate is absorbed by the pressing plate on both sides, so that the noise generated during operation is less.

In addition, in the invention according to claim 3 in which one side in the thickness direction of the reaction plate is adjacent to the pressing plate, and the other side is fixed to the inner surface of the hollow part of the slat by an adhesive, the reaction plate restrains vibration against the slat and at the same time. Since the noise generated by the vibration of the slat itself is also absorbed by the pressing plate of the elastic material, the operation noise is reduced.

In addition, in the invention according to claim 4, since both ends of the reaction plate are fixed to the slats in the longitudinal direction by rivets, vibrations are less likely to occur in the slats even when the reaction plates are subjected to electromagnetic force while the slats are running, and noise is less generated.

(Example)

EMBODIMENT OF THE INVENTION Hereinafter, 1st Example of this invention is described according to drawing. Fig. 1 is a cross sectional view of a slat constituting a slat conveyor driven by a linear motor (not shown), and Fig. 2 is a longitudinal cross-sectional view showing a part of the slat seen in the direction of the arrow in the AA line position of Fig. 1. Since 1) also serves as a conductor on the secondary side of the linear motor, three hollow portions 1A, 1B, and 1C are formed in aluminum and are opened to both ends of the slat 1 therein.

Among these hollow parts 1A, 1B and 1C, the hollow part 1A in the center is located in the width direction center of the position near the bottom surface of the slat 1, The cross-sectional shape is a flat quadrangle, and both sides The hollow portions 1B and 1C have cross-sectional shapes symmetrical with respect to the center in the width direction.

In the central hollow portion 1A, a flat elongated reaction plate 2 having a width close to the width of the hollow portion 1A in the longitudinal center portion of the slat 1, and the reaction plate 2 A press plate 3 made of an elastic material such as urethane foam, which is easily elastically deformed, having a length and a width substantially equal to that of is obtained. As the reaction plate 2, for example, a ferromagnetic material such as a soft iron sheet can be used.

The pressing plate 3 is elastically compressed in the up-down direction so that the surface of the reaction plate 2 and the lower surface of the pressing plate 3 are pressed against the ceiling surface and the bottom surface of the inner wall of the hollow portion 1A, respectively, so as to be frictionally fixed. It is inserted in 1 A of hollow parts.

FIG. 3 shows the state just before the reaction plate 2 and the pressing plate 3 are mounted in the hollow portion 1A of the slat 1, and the pressing plate 3 is inserted before the members are inserted into the slat 1. It superimposes on the surface of the reaction plate 2 previously, is bonded by an adhesive agent, etc., and is integrated.

Before mounting in the slat 1, the sum T of the thickness of the reaction plate 2 and the pressing plate 3 is set to be larger than the distance H between the ceiling surface and the bottom surface of the hollow portion 1A of the slat 1. It is.

Next, an external force is applied between the surface of the pressing plate 3 and the lower surface of the reaction plate 2 using a jig or the like, and the pressing plate 3 is compressed and deformed in the thickness direction to reduce its thickness. It press-fits into the hollow part 1A opened by the one end of the slat 1 in the longitudinal direction. Then, the reaction plate 2 and the pressing plate 3 are positioned by sliding both in the longitudinal direction of the hollow portion 1A such that the reaction plate 2 and the pressing plate 3 are disposed in the longitudinal center of the slat 1.

At this time, since the thickness of the pressing plate 3 is compressed by TH than before the elastic deformation, the pressing plate 3 has elastic restoring force, and as described above, the reaction plate 2 and the pressing plate 3 have the elastic restoring force. By this, friction fixing is performed in the hollow portion 1A of the slat 1.

In addition, although not shown, it is preferable that the openings at both ends of the slat 1 are fitted with a cover to prevent dust or foreign matter from entering the interior after the reaction plate 2 and the pressing plate 3 are mounted.

Next, Fig. 4 is a cross sectional view of the slat showing the second embodiment of the present invention, in which the same slat 1 as the first embodiment shown in Figs. 1 to 3 is used, but in the first embodiment the slat is used. While only the reaction plate 2 and the pressing plate 3 are disposed in the hollow portion 1A of (1), in the case shown in FIG. 4, the lower surface and the hollow portion of the reaction plate 2 together with the pressing plate 3 are shown. Also between the bottom surfaces of 1A, a second press plate 4 made of an elastic material such as a very thin urethane rubber having a thickness of about 0.2 mm is interposed.

The pressing plate 3 and the second pressing plate 4 have a sum of these thicknesses greater than the distance between the ceiling surface and the bottom surface of the hollow portion 1A of the slat 1 before being put into the slat 1. The pressing plate 3 and the pressing plate 4 are previously bonded to the surface and the lower surface of the reaction plate 2 by using an adhesive or the like.

Then, similarly to the first embodiment described above, the reaction plate 2 and the pressing plates 3, 4 integrated from the opening of the end portion of the slat 1 are press-fitted into the hollow portion 1A and reacted in the slat 1. The plate 2 is positioned and fixed.

In the present embodiment, since the lower surface of the reaction plate 2 is fixed through the second pressing plate 4 without directly contacting the bottom surface of the hollow portion 1A of the slat 1, the slat 1 is driven at the time of travel. Even when vibration is generated by the electromagnetic force of the linear motor in the reaction plate 2, the vibration transmitted to the slat 1 is attenuated by the upper and lower pressing plates 3 and 4, and the noise of the noise is more effectively than that of the first embodiment described above. It can prevent occurrence.

In addition, in this embodiment, although the thickness of the press plate 4 is very thin, the reaction plate 2 can be fixed in the hollow portion 1A of the slat 1, and the reaction plate 2 can be fixed. As long as the function of a magnetic circuit is not impaired, the thickness of the press board 3 and the press board 4 may be about the same, or the press board 3 may be made thinner.

FIG. 5 is a cross-sectional view of the slat showing the third embodiment of the present invention. Like the two embodiments described above, the hollow part of the slat 1 is overlapped with the reaction plate 2 and the pressing plate 3 up and down. 1A), but in the present embodiment, the adhesive plate 5 is bonded between the bottom surface of the hollow portion 1A in the slat 1 and the bottom surface of the reaction plate 2 by the adhesive agent 5. It differs from the above-mentioned each embodiment which fixes (2) in the hollow part 1A.

In addition, the sum total of the thickness of the reaction plate 2 and the pressing plate 3 before mounting into the slat 1 is set larger than the distance between the ceiling surface and the bottom surface of the hollow portion 1A of the slat 1. have.

In this embodiment, the reaction plate 2 is fixed to the slat 1 with the adhesive agent 5 so that the electromagnetic excitation force when the slat 1 passes over the linear motor. Even when acting on the reaction plate 2, the vibration of the reaction plate 2 is suppressed by the slats 1.

Moreover, since the vibration energy generated in the slat 1 itself is absorbed by the pressing plate 3, the noise generated when the slat 1 travels can be extremely reduced.

The operation of assembling the reaction plate 2 and the pressing plate 3 in the slat 1 is performed by first bonding the pressing plate 3 to the surface of the reaction plate 2 with an adhesive or the like, and integrating them together. A thermosetting adhesive is applied to the bottom of (2).

Subsequently, as in the case of each of the above-described embodiments, the reaction plate 2 and the pressing plate 3 which are integrated into the hollow portion 1A opened at one end in the longitudinal direction of the slat 1 are pressed into the slat 1. ) So that it is located in the center of the longitudinal direction.

Thereafter, when the slat 1 is heated from the outside, the internal adhesive 5 hardens by heat, and the reaction plate 2 is adhesively fixed to the slat 1.

At this time, since the pressing plate 3 is elastically compressed in the thickness direction in the hollow portion 1A, the surface thereof is strongly pressed against the ceiling surface of the hollow portion 1A to be fixed by friction, and the adhesive 5 hardens. It plays a role of preventing a position shift | offset | difference generate | occur | produces in the reaction plate 2 on the way.

In addition, the slab 1 formed of aluminum and the reaction plate 2 formed of iron-based materials such as wrought iron have different coefficients of thermal expansion, so that the adhesive agent 5 is produced when both temperatures decrease after curing. It is desirable to have elasticity to the extent that the difference in heat shrinkage amount can be absorbed.

In addition, in order to omit the heating process, the adhesive agent 5 may use a kind other than a thermosetting adhesive, and also in this case, the press plate 3 of the position shift of the reaction plate 2 in the middle of hardening of the adhesive agent 5 is carried out. Can be prevented.

In each of the embodiments described with reference to FIGS. 1 to 5 described above, the pressing plate 3 and the pressing plate 4 are bonded to the reaction plate 2 with an adhesive, but may be joined by other fixing means such as welding. If the reaction plate 2 and the pressing plates 3 and 4 are press-fitted without causing a position shift in the hollow portion 1A of the slat 1, the two plates may not be joined by adhesion or the like.

6 is a cross-sectional view of the slat showing the fourth embodiment of the present invention, in which the slide shoe 12 for pushing the article placed on the slat 11 to its side at the sorting position is circumferentially circumferentially. The slide is freely attached in the longitudinal direction to surround the guide roller 13 is freely attached to the lower surface of the slide shoe 12 is guided by an inclined guide rail (not shown) in accordance with the movement of the slat and left and right It is configured to slide in a direction.

7 is a longitudinal cross-sectional view of the slat 11 at the position BB of FIG. 6, wherein the slat 11 is formed with a hollow 11A having a wide width at the center in the width direction thereof. A reaction plate 14 having a width substantially equal to the width thereof is disposed in 11A). In addition, in FIG. 7, illustration of the slide shoe 12 and the guide roller 13 in FIG. 6 is abbreviate | omitted.

The reaction plate 14 is arranged in the hollow portion 11A along the longitudinal direction thereof with the middle portion 14A close to the ceiling surface of the hollow portion 11A, and at the bottom surface side of the hollow portion 11A. Both ends 14B are bent, respectively, and fixed to the bottom surface with rivets 15.

In this embodiment, since the reaction plate 14 is fixed to the slat 11 using the rivet 15, even if electromagnetic force is applied to the reaction plate 14 from the outside, the reaction plate 14 vibrates inside the slat 11 to generate noise. There is nothing to let you do.

The reaction plate 14 is mounted on the slat 11 by placing the reaction plate 14 in the longitudinal center portion of the slat 11 from the opening of the hollow portion 11A (not shown) formed at the end of the slat 11. The rivet holes formed at both end portions 14B of the reaction plate 14 and the rivet holes formed at the bottom surface of the hollow portion 11A of the slat 11 corresponding to the rivet holes. Insert (15) and fix with rivet mounting tool.

In addition, the reaction plate 14 has the intermediate portion 14A on the bottom surface of the hollow portion 11A and the opposite ends 14B on the ceiling surface thereof with the rivet 15 on the reverse side in the reversed bending direction at both ends thereof. It may be fixed as.

As described above, according to the structure for attaching the reaction plate to the slats of the present invention, since the weight of the slats can be reduced, the slats can be pushed with a small driving force, and the driving efficiency can be improved. In addition, since the structure is simple, manufacturing is easy and manufacturing cost can be reduced.

In particular, according to the invention as set forth in claim 1, the reaction plate constituting the magnetic circuit is frictionally fixed to the pressing plate in the state of elastic compression deformation in the hollow portion of the slat. Therefore, the fastening operation of the reaction plate does not use fastening members such as screws. It can be carried out without a simple structure, and at the same time, vibration generated in the reaction plate during slat travel is absorbed by the pressing plate, and noise during slat travel can be reduced.

In particular, according to the invention as set forth in claim 2, since the press plates are arranged on both sides in the thickness direction of the reaction plate, the vibration of the reaction plate is absorbed on both sides thereof, and the generation of noise can be further reduced.

In particular, according to the invention of claim 3, since one side in the thickness direction of the reaction plate is adjacent to the pressing plate and the opposite side is fixed to the inner surface of the hollow part of the slat by an adhesive, the reaction plate is prevented from vibrating against the slat and at the same time. In addition, the noise generated by the vibration of the slat itself is also absorbed by the pressure plate, which is an elastic material, so that operation noise can be minimized.

In particular, according to the invention of claim 4, since the reaction plate constituting the magnetic circuit is widened, and both ends thereof are fixed to the slat side using rivets, the structure is simple and large propulsion force can be generated in the slat. Driving efficiency can be improved. In addition, vibration of the reaction plate inside the slat can be suppressed, thereby reducing operation noise caused by the vibration of the reaction plate.

Claims (4)

In a slat conveyor in which a slat itself is driven by a linear motor as a conductor on the secondary side, and a reaction plate is built in which a magnetic circuit is formed in the slat, the pressing plate made of the reaction plate and the elastic material overlaps in the thickness direction, and the pressing plate A reaction plate attachment structure to a slat, wherein the slab is press-fitted and fixed in the hollow part of the slat in an elastically compressed state in the thickness direction. The reaction plate attaching structure to slats according to claim 1, wherein the pressing plate is disposed on both sides in the thickness direction of the reaction plate. The reaction plate attachment structure of claim 1, wherein one side in the thickness direction of the reaction plate is adjacent to the pressing plate, and the opposite side is fixed to the inner surface of the hollow part of the slat by an adhesive. In a slat conveyor in which a slat itself is driven by a linear motor as a conductor on the secondary side, and a reaction plate is built in which a magnetic circuit is formed in the slat, a slat is formed with a wide hollow portion at the center in the width direction thereof. In the longitudinal direction, the intermediate portion is disposed close to one side facing up and down the hollow portion, and both end portions are folded and bent to the other side side, and a wide reaction plate is provided, which is fixed by rivets on the other side. Reaction plate attachment structure to slat characterized by the above-mentioned.