JP2007119178A - Horizontal conveyance method and horizontal conveyance device for article to be conveyed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horizontal conveyance method and a horizontal conveyance device for an article to be conveyed capable of surely horizontally conveying the article of which lower surface is not flat and has irregularities without stagnating. <P>SOLUTION: At least one projecting part is formed on the lower surface 12a of the article to be conveyed. Rotatingly driving shafts 5 having conveyance surfaces 10 for horizontally conveying the article 12 by a frictional force by supporting the lower surface 12a of the article 12 with a rigidity are arranged parallel with each other. When the article 12 is stagnated during the horizontal conveyance due to sliding contact between the projecting part and the rotation increasing surface 10a of the conveyance surface 10 by the contact of the projecting part on the lower surface of the article 12 on the rotation increasing surface 10a of the conveyance surface 10 of the rotatingly driving shaft 5 forward of the projecting part, the rotatingly driving shaft 5 engaged related to the sliding contact is passed over by pushing up the projecting part 13B on the lower surface of the article 12 while the rotating shaft 5 is rotated by the engagement action of a cutout part 11 circumferentially formed in the conveyance surface 10 of the rotatingly driving shaft 5 under rotation. As a result, the horizontal conveyance of the article can be re-started. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a horizontal conveyance method and a horizontal conveyance device for horizontally conveying a rigid object to be conveyed, and in particular, the object to be horizontally conveyed forms at least one convex part on the lower surface thereof in the front and rear directions. The present invention relates to a horizontal transfer method and a horizontal transfer apparatus.

  One common conveyance method is a belt conveyor (for example, Patent Document 1). This belt conveyor is to carry the object to be conveyed on the upper surface of the endless belt and horizontally convey it in the conveying direction. For example, when conveying an object having irregularities on the lower surface such as a printing screen frame, the belt upper surface is It is possible to reliably carry out horizontal conveyance without causing the unevenness on the lower surface to be caught. However, in the belt conveyor, there is a problem that abrasion powder is generated due to friction between the upper surface of the belt and the lower surface of the object to be conveyed, and the abrasion powder is scattered around and adheres to the object to be conveyed.

There is a roller conveyor as one for this belt conveyor (for example, Patent Document 2). In this roller conveyor, a large number of rotationally driven or freely rotating rollers are arranged in parallel to each other, and the object to be conveyed is in contact with and supported on the rollers to be horizontally conveyed in the conveying direction.

JP 2002-362721 A JP 2005-104656 A

However, according to the latter roller conveyor, when horizontally transporting a to-be-conveyed object that is rigid and the bottom surface is not a flat surface, unlike the case of a to-be-conveyed object that has only a flat bottom surface and no unevenness, There is a problem that the convex portion protruding downward from the lower surface is in sliding contact with the conveyance surface of the front rotational driving roller, and the conveyance of the object to be conveyed is retained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is capable of reliably transporting a transported object having rigidity and having a concave and convex surface on its lower surface without causing retention. It is an object to provide a method and a horizontal transfer device.

  In order to solve the above-mentioned problem, in the horizontal transport method of a transported object according to claim 1 of the present invention, the lower surface of the transported object having rigidity is formed by forming at least one convex part before and after the transport direction of the lower surface. A number of rotational drive shafts having a conveyance surface for horizontally conveying the object to be conveyed in the conveying direction by contact and supporting by frictional force are arranged in parallel, and the convex portion on the lower surface of the object to be horizontally conveyed is located in front of it. Rotating when the horizontal conveyance of the object to be conveyed stays in contact with the rotation rising surface of the conveyance surface of the rotation drive shaft, causing sliding contact between the convex portion and the rotation rising surface of the conveyance surface. The same rotational drive is achieved by the engagement between the convex engaging portion provided at least in one circumferential direction on the conveying surface of the rotational driving shaft and the convex portion on the lower surface of the object to be conveyed opposite to the convex engaging portion. During the rotation of the shaft, the transported object is pushed up and the sliding contact is made. Allowed over the rotary drive shaft according to, characterized in that as allowed to resume horizontal transport of the transported object has.

At least one convex part is formed in the front and rear of the lower surface in the transport direction, and the lower surface of the rigid transport object is supported in contact with the transport surface of the rotary drive shaft, and the transport object is horizontally transported in the transport direction by friction force. In this case, the convex portion on the lower surface of the object to be conveyed contacts the rotation rising surface of the conveyance surface of the rotation drive shaft in front of the conveyance object, so that the riding force is insufficient and the conveyance surface of the rotation drive shaft cannot be overcome. A sliding contact may continuously occur between the convex portion and the rotation rising surface of the conveying surface, and a staying phenomenon of horizontal conveyance of the object to be conveyed may occur.

This staying phenomenon is caused when the convex portion located in the front row of the lower surface of the conveyed object comes into contact with the rotationally rising surface of the conveying surface of the rotary drive shaft in front of it and causes a sliding contact, the outermost surface of the conveyed object. It can occur in any case where the convex portion located in a position other than the front row comes into contact with the rotationally rising surface of the conveying surface of the rotation drive shaft in front of the convex portion and causes sliding contact.

In either case of the former, in the latter case, the protrusion engaging portion constituted by a notch or a protrusion provided at least in one circumferential direction on the conveying surface of the rotation drive shaft is rotationally driven. During the rotation of the shaft in the conveying direction, it engages with the convex part on the lower surface of the object to be conveyed opposite to the convex part engaging part, and the engaging action lowers the convex part on the lower surface of the object to be conveyed. Push up from. Or the convex part is pushed in the transport direction from the rear. When the convex part is pushed up, the object to be conveyed rotates due to the frictional force of the conveyance surface of the other rotational drive shaft that is in contact with and supported by the lower surface, and the convex part is involved in sliding contact. Assists in overcoming the drive shaft. Thereby, the said to-be-conveyed object which horizontal conveyance stagnated resumes the horizontal conveyance. When the convex part is pushed from the rear in the transport direction, the rotational torque of the rotary drive shaft is converted into the transport force.

As a result, even if the object to be conveyed is rigid and has at least one convex part before and after the conveyance direction on the lower surface, a horizontal conveyance device in which a large number of rotational drive shafts are arranged in parallel, such as a roller conveyor type. On the other hand, by sequentially moving over the convex portions, the object to be conveyed can be reliably conveyed horizontally.

  It is desirable to provide the convex engaging portions at a plurality of positions on the circumference, preferably at least three positions. Opportunities to engage with the convex portion increase, and the time during which the horizontal conveyance of the object to be conveyed stays can be reduced.

According to a second aspect of the present invention, there is provided a horizontal transport method of a transported object, wherein at least one convex portion is formed in front and back in the transport direction of the lower surface, and the lower surface of the rigid transport object is contacted and supported by frictional force. A number of rotational drive shafts having a transport surface for horizontally transporting the object to be transported in the transport direction are arranged in parallel, and the convex portion on the lower surface of the horizontally transported object is the transport surface of the front rotational drive shaft. When the horizontal transport of the object to be transported stays in contact with the rotationally rising surface and causes sliding contact between the convex portions and the rotationally rising surface of the transport surface, the periphery of the transport surface of the rotating drive shaft that rotates By pushing up the cam portion provided at least in one direction, the object to be conveyed is pushed up in the middle of rotation of the rotation drive shaft to get over the rotation drive shaft related to the sliding contact. Resume transport Characterized in that way the.

  According to invention of Claim 2, the convex part of the lower surface of a to-be-conveyed object contacts the conveyance surface of a front rotational drive shaft, a sliding contact is produced, and the horizontal conveyance of the said to-be-conveyed object is staying In the middle of the rotation of the front rotational drive shaft in the transport direction, the cam portion provided in at least one circumferential direction of the transport surface of the rotating rotational drive shaft pushes up the lower surface of the transported object. The convex portion on the lower surface of the object to be conveyed that has caused the sliding contact gets over the rotation drive shaft, whereby the horizontal conveyance of the object to be conveyed can be resumed.

  It is desirable to provide the cam portion at a plurality of locations on the circumference, preferably at least 3 locations. Opportunities for the cam portion to act increase, and the time during which horizontal conveyance of the object to be conveyed stays can be reduced.

According to a third aspect of the present invention, there is provided a horizontal conveying method according to the first aspect, in which the protrusion engaging portion extends in parallel along the axial direction of the rotation drive shaft. It is a part.

  According to the invention described in claim 3, the convex portion on the lower surface of the object to be conveyed is in sliding contact with the conveying surface of the front rotary drive shaft, and the horizontal conveyance of the object to be conveyed stays in the front. During the rotation of the rotation drive shaft in the conveyance direction, the sliding contact portion of the convex portion that is in sliding contact with the conveyance surface on the rotation drive shaft side extends in parallel along the axial direction of the rotation drive shaft. When it is opposed to the notch, it is temporarily released from the sliding contact, advances into the notch, and securely engages the notch. Thereafter, with the rotation of the rotary drive shaft, the convex portion is pushed up to get over the transfer surface of the rotary drive shaft, and the horizontal transfer can be resumed.

  In addition, the convex portion on the lower surface of the object to be conveyed is in sliding contact with the conveying surface of the front rotational drive shaft, and the other convex portion is the axis of the rotational drive shaft while the horizontal conveyance of the object to be conveyed is retained. When not facing the notch that extends parallel to the direction, the notch is securely engaged. After that, along with the rotation of the rotary drive shaft, the convex portion is pushed in the transport direction by the notch, and as a result, the slide contact portion of the convex portion in a state of sliding contact with the transport surface of the rotary drive shaft is pushed up, The horizontal conveyance can be resumed by overcoming the conveyance surface of the rotary drive shaft.

  The above two examples of engagement are representative examples, and various engagement patterns can be considered according to the stay phenomenon.

  According to a fourth aspect of the present invention, there is provided a horizontal conveying method according to the first aspect, wherein the protrusion engaging portion is continuous or intermittent in parallel along the axial direction of the rotary drive shaft. It is a protrusion part extended in general.

  According to the invention described in claim 4, the convex portion on the lower surface of the object to be conveyed is in sliding contact with the conveying surface of the front rotary drive shaft, and the horizontal conveyance of the object to be conveyed is retained in the front. During the rotation of the rotary drive shaft in the transport direction, the sliding contact portion of the convex portion that is in sliding contact with the transport surface on the rotary drive shaft side is continuous in parallel along the axial direction of the rotary drive shaft. Or it is pushed up from below by engaging with a protruding part that extends intermittently, or other convex part is engaged with a protruding part that extends continuously or intermittently in parallel along the axial direction of the rotary drive shaft Pushed up from the bottom or pushed in the transport direction, and as a result, the sliding contact portion of the convex portion that is in sliding contact with the transport surface of the rotary drive shaft is pushed up and gets over the transport surface of the rotary drive shaft to perform horizontal transport. Resume.

  According to a fifth aspect of the present invention, there is provided a horizontal transport device for a transported object, wherein at least one convex portion is formed on the lower surface in the transport direction and the lower surface of the rigid transport object is contact-supported by frictional force. A plurality of rotational drive shafts having a transport surface for horizontally transporting an object to be transported in the transport direction, and drive means for rotationally driving the rotational drive shafts synchronously; A convex portion engaging portion that can be engaged with a convex portion on the lower surface of the object to be conveyed or a cam portion for pushing up the lower surface of the object to be conveyed is provided in at least one place on the periphery of the object. To do.

  According to the fifth aspect of the present invention, the convex engaging portion that can be engaged with the convex portion of the lower surface of the object to be conveyed or the lower surface of the object to be conveyed at least at one place on the circumference of the conveying surface of the rotary drive shaft By providing a cam portion for pushing up, a horizontal transport device that forms at least one convex part in the front and back of the transport direction on the lower surface and can reliably transport a rigid transported object without staying in the middle Can be realized. Moreover, problems such as generation, scattering, and adhesion of wear powder as in the case of using a conveyor belt can be suppressed. From this viewpoint, it is desirable that the conveyance surface of the rotary drive shaft is made of metal.

  According to a sixth aspect of the present invention, there is provided a horizontal transfer device for a transported object according to the fifth aspect, wherein the fluid is ejected from a gap of a rotary drive shaft and the fluid is sprayed onto the transported object. One or more fluid spraying means are provided.

  The fluid spraying means is preferably provided in parallel with the object to be transported along the axial direction of the rotational drive shaft, and includes one or more nozzles so as to be sprayed evenly onto the object to be transported.

Further, in order to supply the fluid to the fluid spraying means, for example, a fluid storage tank in which the fluid is stored is provided, the fluid storage tank and the fluid spraying means are connected by the fluid supply pipe, and the fluid supply pipe is provided. A fluid spray pump for transferring (pressing) the fluid to the fluid spraying means may be provided.

  According to the sixth aspect of the present invention, one or more nozzles are arranged in parallel to the object to be conveyed along the axial direction of the rotary drive shaft from the gap of the rotary drive shaft, for example, during horizontal transfer. By spraying the fluid toward the transported object, the fluid can be sprayed over the entire surface of the transported object during the horizontal transport. In addition, the nozzle can be disposed closer to the object being transported in the horizontal direction from the clearance of the rotary drive shaft, and the effect of spraying the fluid can be enhanced.

A seventh aspect of the present invention is the horizontal transfer device according to the sixth aspect, comprising: a fluid storage tank that stores fluid; and a fluid supply unit that supplies the fluid in the fluid storage tank to the fluid spraying unit. It is characterized by.

  According to the seventh aspect of the present invention, for example, by providing the fluid recovery means, the fluid ejected from the fluid spraying means can be recovered to the fluid storage tank by the fluid recovery means and reused. In addition, for example, by providing a temperature adjustment mechanism that keeps the temperature of the fluid constant in the fluid storage tank, it is possible to spray a fluid having an optimum temperature for the cleaning process or the liquid draining process of the conveyed object.

  Furthermore, it is desirable to provide a drying means for drying the object to be conveyed during horizontal conveyance. For example, from the upstream side to the downstream side, liquid spraying means for cleaning the transported object, gas spraying means for draining the cleaned transported object, and drying means for drying the transported object after draining are sequentially arranged. Thus, automation from the washing process to the drying process can be achieved.

As described above, according to the horizontal conveying method of the object to be conveyed according to the present invention, as in the roller conveyor type, the rotational drive shafts arranged in parallel are rotated in the conveying direction, and the object to be conveyed is conveyed by the conveying surface. In the horizontal transport method for horizontally transporting, there is an effect that a transported object having a lower surface that is not flat but uneven and has rigidity can be reliably transported horizontally without causing the transport to stay.

Moreover, according to the horizontal conveyance apparatus of the to-be-conveyed object which concerns on this invention, there exists an effect similar to the above.

  Next, the best embodiment according to the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a side view of a horizontal conveyance device 1, and FIG. 2 is a plan view of FIG.

  As shown in FIG. 1 and FIG. 2, the horizontal transport device 1 is disposed in parallel and horizontally with an apparatus body 4 composed of a horizontal frame 2 and a support 3, and at an equal interval inside the horizontal frame 2. And a number of rotary drive shafts 5. Each rotary drive shaft 5 has its axis centered in the horizontal direction orthogonal to the conveyance direction H of the object to be conveyed 12, and the shaft end portions 5a on both sides are rotatably supported between the bearings of the opposed horizontal frames 2 and 2. is doing.

Each rotary drive shaft 5 is rotationally driven in synchronization by a drive force from a drive motor 6 attached to a part of the apparatus main body 4. That is, a chain 9 is wound between the pulley 7 of the output shaft 6a of the drive motor 6 and the pulley 8 of one rotary drive shaft 5, and between the pulleys 8 of each rotary drive shaft 5. Thus, the driving force from the drive motor 6 can be transmitted to each rotary drive shaft 5, and each rotary drive shaft 5 can be driven to rotate in the transport direction in synchronization.

As shown in FIG. 3, each rotary drive shaft 5 is formed with a conveying surface 10 having the same axis O and a diameter larger than the diameter of the rotary drive shaft 5. The conveying surface 10 is provided with four notches 11 on the circumference at equal intervals on the circumference. Each notch 11 extends in parallel along the axial direction, and includes a vertical plane 11a passing through the axial center O and a horizontal plane 11b extending horizontally from the vertical plane 11a with an internal angle α = 90 degrees. have. Each notch portion 11 constitutes an engaging convex portion that engages with convex portions 13A and 13B on a lower surface 12a of a later-described conveyed object 12 that is horizontally conveyed. By setting the inner angle α = 90 degrees, there is an advantage that notch processing is easy. Further, by setting the interior angle α to an obtuse angle (for example, 120 to 150 degrees), the bite becomes deeper and engagement becomes easier.

  As an example of the transported object 12 that is transported horizontally in the present embodiment, there is a rigid aluminum screen printing plate frame, and convex portions 13A and 13B are formed on the lower surface 12a of the transported object 12 on the front and rear sides. ing. As a result, the lower surface 12a that is the transport surface of the transported object 12 has an uneven shape.

On the upstream side of the apparatus main body 4, a cleaning liquid spraying unit 14 that cleans the object to be transported 12 that is horizontally transported from above and below is disposed. The cleaning liquid spraying unit 14 ejects cleaning liquid from the sealed cleaning unit 15 and sprays the cleaning liquid on the transported object 12. The cleaning liquid spraying unit 14 is installed at an upper position and a lower position of the transported object 12 in the cleaning unit 15. This cleaning liquid spraying unit 14 includes a pressure adjusting manual valve and a pressure check pressure gauge (not shown), and from a cleaning liquid storage tank (not shown) from a nozzle 14a at the tip through a fluid supply pipe by a fluid spraying pump. The cleaning liquid is sprayed onto the object to be transported 12. The cleaning liquid spraying unit 14 has a plurality of nozzles 14 a, and the cleaning liquid from these nozzles 14 a is sprayed toward the transported object 12 at an arbitrary angle and in an arbitrary shape.

The nozzles 14a of the cleaning liquid spraying unit 14 disposed in the cleaning unit 15 are located in the gaps S between the conveying surfaces 10 and 10 of the adjacent rotary drive shafts 5 and 5, and the axial direction of the rotary drive shaft 5 And intermittently in parallel.

As shown in FIG. 3, the upper end position of each nozzle 14 a of the cleaning liquid spraying unit 14 located on the lower side of the upper and lower sides is in contact with the lower end surfaces of the convex portions 13 </ b> A and 13 </ b> B on the lower surface of the object to be conveyed 12 that is horizontally conveyed. The distance between the lower end surfaces of the convex portions 13A and 13B on the lower surface of the object to be conveyed 12 in the lower position where the lower surface 12a of the object to be conveyed 12 is in contact with and supported by the conveying surface 10 of the rotary drive shaft 5 L can be arbitrarily adjusted. Further, the distance between the upper surface of the transported object 12 to be transported horizontally and the lower end of each nozzle 14a of the cleaning liquid spraying unit 14 located above the transported object 12 can be arbitrarily adjusted.

On the downstream side of the apparatus main body 4 with respect to the cleaning liquid spraying unit 14, a gas spraying unit 16 for spraying gas from the up and down direction of the transported object 12 after cleaning is disposed. The gas consists of air or the like. This gas spraying unit 16 is for injecting gas at the sealed liquid draining part 17 and spraying it onto the transported object 12. The gas spraying unit 16 is installed in the liquid cutting part 17 at an upper position and a lower position of the transported object 12. ing. The gas injection unit 16 includes a pressure adjusting manual valve and a pressure check pressure gauge (not shown), and injects gas from the nozzle 16a at the tip through a filter by the pressure from the compressor. Yes. The gas spraying unit 16 has a plurality of nozzles 16 a, and the gas from each nozzle 16 a is sprayed to the object to be transported 12 at an arbitrary angle and in an arbitrary shape.

The nozzles 16a of the gas spray unit 16 disposed in the liquid draining portion 17 are positioned in the gaps S between the conveying surfaces 10 and 10 of the adjacent rotary drive shafts 5 and 5, and the axis of the rotary drive shaft 5 is located. It is provided continuously in parallel with the direction.

Of the upper and lower sides, the upper end position of each nozzle 16a of the gas blowing unit 16 located on the lower side is a lower position that does not come into contact with the lower end surfaces of the convex portions 13A and 13B on the lower surface of the object 12 to be conveyed horizontally. The distance L between the lower surfaces of the convex portions 13A and 13B on the lower surface of the conveyed object 12 in a state where the lower surface 12a of the conveyed object 12 is in contact with and supported by the conveying surface 10 of the rotary drive shaft 5 is arbitrarily adjusted. can do. In addition, the distance between the upper surface of the transported object 12 that is transported horizontally and the lower end of each nozzle 16a of the gas blowing unit 16 located above the transported object 12 can be arbitrarily adjusted.

Further, on the downstream side of the liquid draining portion 17 of the apparatus main body 4, a drying unit 18 for drying the transported object 12 after the liquid draining is disposed. The drying unit 18 is for supplying hot air from the hot air outlets 18 a provided at two locations above the drying tank 19 in order to dry the article 12 to be transported in the sealed drying tank 19. A hot air generator (not shown) for generating hot air, a filter (not shown) for filtering the hot air, and a drying tank 19 for recovering the hot air supplied to the drying tank 19 are provided with a pipe 18b. A hot air recovery port 18c and a hot air recovery pipe 18d provided below are provided.
Thereby, for example, the set temperature of the hot air generator is set to 130 ° C., and the hot air adjusted to 130 ° C. is circulated to dry the transported object 12 after draining.

Next, a method for horizontally transporting the article 12 to be transported using the horizontal transport apparatus 1 having the above-described configuration will be described with reference to FIG.

As shown in FIG. 4 (a), the lower surface 12a of the object to be conveyed 12 is supported in contact with the conveying surface 10 of a plurality (three in FIG. 4 (a)) of the rotary drive shaft 5, and in this contact supporting state. The lower end surfaces of the convex portions 13 </ b> A and 13 </ b> B of the conveyed object 12 are positioned above the rotational axis of the rotation drive shaft 5. The transported object 12 is transported forward in the transport direction H at a transport speed of 1000 cm / min or less, for example, 80 cm / min, due to the frictional force between the rotating drive shaft 5 and the transport surface 10. As shown in FIG. 4 (a), the convex portion 13B at the rear end of the lower surface of the object to be conveyed 12 comes into contact with the rotation rising surface 10a of the conveying surface 10 of the front rotary drive shaft 5 to cause a sliding contact. Conveyance of stagnation.

At this time, during the rotation of the rotary drive shaft 5 in sliding contact with the convex portion 13B at the rear end, as shown in FIG. When facing the convex portion 13B, the rear-end convex portion 13B is released from the sliding contact and advances into the cutout portion 11 to engage with the cutout portion 11. And with rotation of the rotational drive shaft 5, the notch part 11 pushes up the convex part 13B of a rear end as it is. At this time, the conveying force acts on the object to be conveyed 12 due to the frictional force with the conveying surface 10 of the rotation drive shaft 5 in the remaining contact support state, and as shown in FIG. 13B moves over the conveying surface 10 of the rotary drive shaft 5.

As shown in FIG. 4C, when the convex portion 13B at the rear end moves over the conveying surface 10 of the rotational drive shaft 5, the convex portion 13A at the front end of the lower surface of the object to be conveyed 12 is the front rotational driving shaft 5. May come into contact with the rotationally rising surface 10a of the conveying surface 10 and cause sliding contact. In this case, the convex portion 13B at the rear end also makes sliding contact on the transport surface 10 of the rotational drive shaft 5, but as shown in FIG. Since the rear end convex portion 13B is engaged and the notch portion 11 presses the rear end convex portion 13B from the rear side to apply a conveying force to the object to be conveyed 12, FIG. As shown in FIG. 4 (e), the convex portion 13A at the front end of the object to be conveyed 12 is made to move over the rotation rising surface 10a of the conveying surface 10 of the rotation drive shaft 5, thereby The stay of conveyance is eliminated, and the object to be conveyed 12 can be reliably horizontally conveyed forward.
Alternatively, the sliding contact portion of the convex portion 13 </ b> A engages with the convex portion engaging portion of the front rotational drive shaft 10 a, and is pushed up to get over the rotation rising surface 10 a of the transport surface 10 of the rotational drive shaft 5. The stay of conveyance is eliminated and the object to be conveyed 12 can be reliably horizontally conveyed forward.

In the horizontal conveyance device 1 of the present embodiment, the cleaning liquid is ejected from the nozzles 14a of the upper and lower cleaning liquid spraying units 14 to the transported object 12 in the upstream cleaning unit 15 and cleaned. The cleaning liquid is supplied to the cleaning liquid spraying unit 14 from the cleaning liquid supply pipe 14b. Further, in the liquid draining part 17 on the downstream side of the cleaning part 15, the gas is ejected from the nozzles 16 a of the upper and lower gas spraying units 16 to the transported object 12 after the cleaning, and the liquid is drained. Gas is supplied to the gas spray unit 16 from a gas supply pipe 16b. Further, in the drying unit 18 on the downstream side of the liquid draining section 17, the hot air generated from the hot air generator is supplied from above by the hot air supply pipe after filtering and is recovered from below, thereby circulating the hot air. This is done to dry the conveyed object.

From the upstream side to the downstream side of the horizontal transfer device 1, a cleaning liquid spraying unit 14 for cleaning the upper and lower surfaces of the transported object 12, a gas spraying unit 16 for draining the transported object 12 after cleaning, By arranging the drying sections 18 for drying the conveyed product 12, each process from washing to drying can be automated.

FIG. 5 shows an example in which a plurality of cutout portions 11 having a cross-sectional shape shown in FIG. 3 are provided on the conveying surface 10 of the rotary drive shaft 5 on the circumference, and FIG. 5A shows the cutout portions 11 at regular intervals. The place is formed. The circumferential pitch β between the notches 11 and 11 adjacent in the circumferential direction is 60 degrees. By increasing the number of the notches 11 to six places on the circumference, the opportunity to engage with the convex portions 13A and 13B of the conveyed object 12 is further increased.
FIG. 5B shows the notch 20 formed by the inclined surfaces 20a and 20a having a total inner angle α of 45 degrees to the left and right with respect to the line passing through the axis O, and the conveying surface of the rotary drive shaft 5. An example in which a plurality of positions on the circumference of 10 are formed is shown.

FIG. 6 shows a plurality of convex protrusions 21 continuously extending along the axial direction instead of the notches 11 on the conveying surface 10 of the hollow pipe 22 of the rotary drive shaft 5 instead of the notches 11. FIG. 6A shows an example in which four portions are formed at equal intervals around the circumference in FIG. 6A. The protrusion 21 is fixed to the transport surface 10 of the rotary drive shaft 5 by means such as welding. The cross-sectional shape of the protrusion 21 is not limited to a square shape, but may be a round shape as shown in FIG. Further, the cross-sectional shape of the protrusion 21 may be a hook shape having an L-shaped cross section as shown in FIG. By adopting the hook shape, the protrusion 21 can be engaged with the lower end surfaces of the convex portions 13A and 13B of the conveyed object 12 from a position below the axial center position of the rotation drive shaft 5. That is, the protrusion 21 effectively engages with the transported object 12 in which the lower end surfaces of the convex portions 13A and 13B are located below the axial center position of the rotation drive shaft 5, and the transported object 12 is It can be transported.
In addition, although the example using a hollow pipe was shown in FIG. 6, this invention is not restricted to this, It does not need to be hollow.

FIG. 7 shows an example in which cam portions are formed on the conveying surface 10 of the rotary drive shaft 5 to push up the convex portions 13A and 13B on the lower surface of the object to be conveyed 12. FIG. 7A shows an example in which the cross section is elliptical and the cam portion 23 is formed at two locations in the longitudinal direction, and FIG. 7B shows a polygonal cross section (including those with an R at each apex of the polygon). 7 (c) is an example in which the rotation center is eccentric and the cam portion 25 is formed at a portion farthest from the rotation center.

7 is formed on the conveying surface of the rotary drive shaft 5, the lower surface of the object to be conveyed 12 is pushed up by the cam portions 23, 24, 25, and the rotary drive shaft 5 The transfer surface 10 can be overcome.

In the above-described embodiment, the screen printing plate frame has been described as an example of the object to be conveyed 12. However, the present invention is not limited to this, and a rigid one having a convex portion on the lower surface (made of metal, ceramic, plastic, or wood). Or the like).

Moreover, the conveyance surface 10 of the rotational drive shaft 5 is not limited to one that extends continuously in the axial direction, and may be a sprocket type that extends intermittently in the axial direction.

In the embodiment shown in FIG. 1, the drive motor 6, the pulleys 7 and 8, and the chain 9 are applied as means for rotationally driving the rotary drive shafts 5 synchronously. However, another structure as shown in FIG. 8 is adopted. May be. That is, in the example of FIG. 8, the transmission shaft 27 with the worm 26 whose both ends are pivotally supported by a part of the apparatus body 4 is rotationally driven via the drive motor 6, pulleys 7 and 8, and the chain 9. A worm gear 28 that meshes with the worm 26 is attached to the end of the rotational drive shaft 5 so that the rotational drive force of the drive motor 6 is transmitted to the rotational drive shaft 5.

The horizontal transport method and the horizontal transport apparatus according to the present invention can be suitably used for horizontally transporting an object to be transported that has rigidity and has an uneven surface instead of a flat bottom surface.

The side view which shows one Embodiment of this invention and shows the whole horizontal conveying apparatus, The top view which shows the state which looked at the horizontal conveying apparatus of FIG. 1 in the AA line direction of FIG. FIG. 3 is a main part explanatory view showing a rotary drive shaft used in the horizontal conveyance device of FIG. 1; (A) (b) (c) (d) (e) is an explanatory view showing a procedure for horizontally conveying an object to be conveyed using the horizontal conveying device of FIG. It is a figure which shows the other example of a rotational drive shaft, (a) is the example which formed the notch part of the cross-sectional shape shown in FIG. 3 in six places on the circumference, (b) is 45 right and left with respect to the line which passes along an axial center. An example in which notches having a total inner angle of 90 degrees are formed at six positions on the circumference, It is a figure which shows the other example of a rotational drive shaft, (a) is the example which formed the square-shaped projection part in four places on the circumference, (b) is the example which formed the round-shaped projection part in four places on the circumference. , (C) is an example in which hook-shaped protrusions are formed in four places on the circumference, It is a figure which shows the other example of a rotational drive shaft, (a) is the example which made the cross section of the rotational drive shaft elliptical shape, (b) is the example which made the cross section of the rotational drive shaft polygon, (c) is rotation In this example, the drive shaft has an elliptical cross section and the center of rotation is decentered. It is a figure which shows the other structural example which carries out rotation drive synchronizing a rotation drive shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontal conveyance apparatus 2 Horizontal frame 3 Support | pillar 4 Apparatus main body 5 Rotation drive shaft 5a Shaft end part 6 Drive motor 6a Output shaft 7, 8 Pulley 9 Chain 10 Conveyance surface 10a Rotation raising surface 11, 20 Notch 11a Vertical surface 11b Horizontal surface 12 Conveyed object 12a Lower surface 13A, 13B Convex part 14 Cleaning liquid spraying unit 14a, 16a Nozzle 14b Cleaning liquid supply pipe 15 Cleaning part 16 Gas spraying unit 16b Gas supply pipe 17 Liquid draining part 18 Drying unit 18a Hot air outlet 18b Temperature Air supply pipe 18c Hot air recovery port 18d Hot air recovery pipe 19 Drying tank 20a Inclined surface 21 Projection part 22 Hollow pipes 23, 24, 25 Cam part 26 Worm 27 Transmission shaft 28 Worm gear H Transport direction O Axle L Distance S clearance

Claims (7)

  Rotation with a conveyance surface that forms at least one convex part in the front and rear direction of the lower surface and supports the lower surface of the rigid object to be conveyed in contact and horizontally conveys the object in the direction of conveyance by friction force A large number of drive shafts are arranged in parallel, and the convex portions on the lower surface of the object to be transported horizontally are in contact with the rotation raising surface of the conveyance surface of the front rotation drive shaft, and the rotation of the convex portions and the conveyance surface are increased. A convex engaging portion provided at least in one circumferential direction of the conveying surface of the rotating drive shaft that rotates when the horizontal conveyance of the object to be conveyed stays due to sliding contact with the surface, and the convex portion During the rotation of the rotation drive shaft, the object to be conveyed is pushed up to get over the rotation drive shaft related to the sliding contact by the engaging action with the convex portion opposed to the engagement portion. To resume transport Horizontal transfer method of the transported object, wherein.   Rotation with a conveyance surface that forms at least one convex part in the front and rear direction of the lower surface and supports the lower surface of the rigid object to be conveyed in contact and horizontally conveys the object in the direction of conveyance by friction force A large number of drive shafts are arranged in parallel, and the convex portions on the lower surface of the object to be transported horizontally are in contact with the rotation raising surface of the conveyance surface of the front rotation drive shaft, and the rotation of the convex portions and the conveyance surface are increased. When the horizontal transfer of the object to be transferred is retained due to sliding contact with the surface, the rotation is caused by the push-up action of the cam portion provided at least in the circumferential direction of the transfer surface of the rotating rotary drive shaft. During the rotation of the drive shaft, the object to be conveyed is pushed up to get over the rotation drive shaft related to the sliding contact, so that the horizontal conveyance of the object to be conveyed is resumed. Transport method . The method for horizontally transporting an object to be transported according to claim 1, wherein the convex engaging portion is a notch extending in parallel along the axis of the rotational drive shaft. The method for horizontally transporting an object to be transported according to claim 1, wherein the protrusion engaging portion is a protrusion that continuously or intermittently extends in parallel along the axis of the rotational drive shaft.   A large number of conveyance surfaces that form at least one convex part in the front and rear of the lower surface in the conveyance direction, and have the conveyance surface that horizontally supports the object to be conveyed in the conveyance direction by frictional force by supporting and supporting the lower surface of the rigid object to be conveyed And a drive means for synchronously driving the rotary drive shafts, and at least at one location on the circumference of the transfer surface of each rotary drive shaft, a convex portion on the lower surface of the object to be transferred And a cam for pushing up the lower surface of the object to be conveyed.   6. The apparatus for horizontally transporting a transported object according to claim 5, further comprising at least one fluid spraying means for spraying a fluid from a gap between the rotary drive shafts and spraying the fluid onto the transported object. 7. The horizontal conveying apparatus for an object to be conveyed according to claim 6, further comprising: a fluid storage tank that stores a fluid; and a fluid supply unit that supplies the fluid in the fluid storage tank to a fluid spraying unit.

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