JPH0529049U - Drum transfer pallet - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a drum transport pallet capable of reliably supporting and transporting even drums 20 having different diameters in a vertical state. [Structure] An air cylinder 30 is provided on a substrate 10, and a slide plate 43 horizontally moves in the vertical direction by the air cylinder 30. Fixed plate 42 on air cylinder 30
Is attached, and the fixed plate 42 and the slide plate 43 are
It is connected by three link mechanisms 40. Slide plate
When 43 is raised, the connecting pin of each link mechanism 40 moves outward and is pressed against the inner peripheral surface of the drum 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a drum used for vertically supporting and transporting a drum such as an aluminum tube having a photosensitive layer formed on its outer peripheral surface in the manufacture of a photosensitive drum used in an electrophotographic copying machine. Concerning the transport pallet.

[0002]

[Prior Art]

 A photosensitive drum used in an electrophotographic copying machine is manufactured by applying a photosensitive substance to the outer peripheral surface of a drum such as an aluminum tube. Before the photosensitive material is applied, the drum is cleaned with a cleaning agent containing water and a surfactant and steam of the cleaning agent. The washed drum is transported by a drum transport pallet that vertically supports and transports the drum during the transport from the cleaning process to the photosensitive substance coating process.

As shown in FIG. 5, a conventional drum transport pallet includes a flat plate-shaped substrate 81 on which a drum 80 to be transported is mounted, and a cylindrical support member 82 projectingly provided on the upper surface of the substrate 81. have. The support member 82 supports the drum 80 vertically by inserting the drum 80 in a vertical state from above. Therefore, since the drum 80 is vertically supported and conveyed, a chucking mechanism is inserted at the upper end of the drum in the next coating step, and the drum 80 contacts the outer peripheral surface q. Be chucked.

[0004]

[Problems to be solved by the device]

 In such a drum transport pallet, in order to support the transported drum 80 in a vertical state, it is necessary to set the outer diameter of the support member 82 in correspondence with the drum 80 to be transported. Therefore, if the diameter of the drum 80 to be transported is different, it is necessary to prepare a drum transport pallet having a supporting member 82 corresponding thereto. Therefore, dedicated drum transfer pallets are manufactured according to the diameter of the drum 80 to be transferred. Further, in order to smoothly chuck the conveyed drum 80 in the next coating step, it is necessary to set the supporting position of the supporting member 82 with high accuracy depending on a chucking mechanism inserted in the drum. There is also a problem that it takes time to process the supporting member 81.

The present invention solves such a problem, and an object of the present invention is to provide a drum transfer pallet that can easily cope with a case where drums having different diameters are transferred.

[0006]

[Means for Solving the Problems]

 The drum transfer pallet of the present invention is a drum transfer pallet used to vertically support and transfer a drum. A slide plate, which is arranged on the substrate so as to be positioned in a drum to be placed and is capable of moving in parallel in the vertical direction with respect to the substrate, and the slide plate and the substrate are connected to each other. By moving the slide plate in the vertical direction, the slide plate is moved outward so as to be pressed against the inner peripheral surface of the drum mounted on the substrate and is inserted into the drum mounted on the substrate. A plurality of link mechanisms each having a connecting part capable of moving inward, and means for moving the slide plate in the vertical direction with respect to the substrate. The above object is achieved.

[0007]

[Action]

 In the drum transfer pallet of the present invention, when the drum is placed on the substrate, the slide plate is moved so that the connecting portion of each link mechanism is inserted into the drum. Then, when the drum is placed vertically on the substrate, the slide plate is moved and the connecting parts of each link mechanism located inside the drum are moved outward and pressed against the inner peripheral surface of the drum. It

[0008]

【Example】

 An embodiment of the present invention will be described below. The photoconductor drum of an electrophotographic copying machine is manufactured by applying a coating liquid containing a photosensitive substance to the outer peripheral surface of a cleaned and cleaned aluminum tube, etc., to form a photosensitive layer on the outer peripheral surface. To be done. The drum transfer pallet of the present invention is used to transfer the coating liquid to the next outer peripheral surface of the drum after the cleaning process, after the drum is cleaned.

The drum transfer pallet of the present invention has a flat substrate 10 as shown in FIG. The substrate 10 is placed on a conveyor (not shown) and conveyed in a predetermined direction. An aluminum drum 20, which is a non-magnetic material, is placed on the base plate 10.

An air cylinder 30 is provided on the substrate 10. The air cylinder 30 is erected on the substrate 10 and penetrates a cylinder body 31 having an outer diameter sufficiently smaller than the inner diameter of the drum 20 mounted on the substrate 10, and an upper end surface of the cylinder body 31. And a piston 32 attached to the lower end of the piston rod 33 and sliding in the cylinder body 31. The piston 32 is urged upward by a tension spring 34 provided in the cylinder body 31. An air chamber 35 formed below the piston 32 in the cylinder body 31 communicates with an air passage 36 provided in the substrate 10. The air passage 36 is connected to a decompression pipe 37 at a position where the drum 20 is placed on the substrate 10 to reduce the pressure.

On the upper end surface of the cylinder body 31, two guide shafts 41 and 41 are erected vertically. A disc-shaped fixed plate 42 is fixed to the upper end of each guide shaft 41 in a horizontal state. A disk-shaped slide plate 43 is fitted on each guide shaft 41 so as to be slidable in the vertical direction. The slide plate 43 is provided at the upper end of the piston rod 33 extending from the cylinder body 31. Is linked to. Therefore, the vertical movement of the piston rod 33 moves the slide plate 43 in the horizontal state in the vertical direction.

The fixed plate 42 and the slide plate 43 are connected by a link mechanism 40 at three locations at equal intervals in the circumferential direction. Each link mechanism 40 includes a link arm 45 whose base end is rotatably connected to the fixed plate 42, a link arm 46 whose base end is rotatably connected to the slide plate 43, and each link arm 45. And a connecting pin 47 that rotatably connects the distal end portions of 46 to each other. Therefore, when the slide plate 43 is raised so as to approach the fixed plate, the connecting pin 47 that connects the tip ends of the link arms 45 and 46 is in the outward position, and When the plate 43 is lowered, each connecting pin 47 is moved inward.

In the drum transfer pallet having such a configuration, when the drum 20 is transferred to a predetermined position in order to place the drum 20 on the substrate 10, the air passage 36 of the substrate 10 and the decompression pipe 37 are brought into communication with each other. Become. In this state, the decompression pipe 37 is decompressed, and the air chamber 35 in the cylinder body 31 of the air cylinder 30 is decompressed. As a result, the piston 33 is lowered against the pulling force of the pulling spring 34. As the piston 33 descends, as shown in FIG. 2, the piston rod 33 descends, and the slide plate 43 attached to the upper end of the piston rod 33 descends horizontally along both guide shafts 41. As a result, the connecting pin 47 of each link mechanism 40 moves inward integrally. In such a state, the drum 20 in the vertical state is lowered so that the connecting pins 47 and the air cylinder 30 are inserted therein, and the drum 20 is placed on the substrate 10.

After that, when the decompression by the decompression pipe 37 is stopped, the piston 32 is lifted by the tension spring 34 in the cylinder body 31. As the piston 32 rises, the piston rod 33 also rises integrally, and the piston rod 33 pushes up the slide plate 43. As a result, the connecting pin 47 connecting the distal end portions of the link arms 45 and 46 moves upward while moving upward, and the connecting pins 47 are pressed against the inner peripheral surface 21 of the drum 20. Since each connecting pin 47 is moved outward by the same distance as the slide plate 43 moves in parallel, the drum 20 is placed on the base plate 10 in an eccentric state with respect to the air cylinder 30. However, the connecting pin 47 causes the drum 20 to be concentric with the air cylinder 30. The connecting pins 47 are pressed against the inner peripheral surface of the drum 20 to support the drum 20 in a vertical state.

As described above, since the drum 20 placed on the substrate 10 is supported in a vertical state by the connecting pins 47 being pressed against the inner peripheral surface of the drum 20, the inner diameter of the drum 20 is constant. Even if it is not, the drum 20 can be supported without any trouble.

When the drum 20 is held vertically in this way, the drum transfer pallet is transferred to a predetermined position by the conveyor, and the air passage 36 of the substrate 10 is connected to the decompression pipe provided at the transfer position. It will be in the state of being. Then, the chucking mechanism is inserted from the upper end of the drum 20, so that the chucking mechanism is chucked without contacting the outer peripheral surface of the drum 20 with the chucking mechanism. After that, the air chamber in the cylinder 30 is decompressed by the decompression pipe, so that the piston 33 is lowered, and the pressure contact state of the inner peripheral surface of the drum 20 by the connecting pins 47 in the link mechanism 40 is released. Then, the chucking mechanism that chucks the upper end portion of the drum 20 is lifted to raise the drum 20.

FIG. 3 shows another embodiment of the drum transport device of the present invention. In this embodiment, the piston 32a is composed of, for example, a permanent magnet having an S pole. An electromagnet 50 is arranged at a predetermined portion of the positioning table 11 on which the substrate 10 is placed for mounting the drum 20 so as to face the cylinder 30 of the substrate 10 placed. The electromagnet 50 has a cylindrical core 51 and a coil 52 wound around the core 51. When the coil 52 is energized, the upper end of the coil 52 is, for example, N. Become a pole.

In the drum transport pallet having such a configuration, when it is placed on the positioning table 11, the coil 52 of the electromagnet 50 is energized so that its upper end is the N pole. As a result, the piston 32a having the S pole is attracted by the electromagnet 50, so that the piston 32a is moved downward against the tensile force of the tension spring 34. As a result, the piston rod 33 is lowered, and the connecting pin 47 of each link mechanism 40 is moved inward. When the drum 20 is placed on the substrate 10 in such a state, the energization of the electromagnet 50 is stopped, the piston 32a is raised by the tension spring 34, and the connecting pin 47 of each link mechanism 40 is moved outward. Move to. Then, the connecting pins 47 are pressed against the inner peripheral surface of the drum 20, so that the drum 20 is supported while being positioned concentrically with the cylinder 30. In this embodiment, a positioning table similar to the above-described positioning table 11 is provided at a position where the drum 20 is conveyed to a predetermined position and the drum 20 is unloaded.

FIG. 4 shows another embodiment of the present invention. In this embodiment, a through hole 10a is formed below the cylinder 30 in the substrate 10, and a bar magnet 55 is attached to the positioning base 11 concentrically with the through hole 10a. The bar magnet 55 has an N pole at the upper end and an S pole at the lower end. Then, the base 10 is moved up and down with respect to the positioning base 11, and the bar magnet 55 is inserted into and removed from the through hole 11a of the base 10, whereby the piston 32a is moved up and down.

[0020]

[Effect of the device]

 In the drum transport pallet of the present invention, the link mechanism connecting portion located inside the drum placed on the substrate is moved outward in the radial direction of the drum to be pressed against the drum inner peripheral surface. By doing so, since the drum is supported, the drum can be supported vertically even if the inner diameter of the drum is different. However, since the drum is reliably positioned at the predetermined position by the connecting portion of the link mechanism, loading and unloading of the drum becomes easy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a drum transport pallet of the present invention.

FIG. 2 is an operation explanatory view of the drum transport pallet shown in FIG.

FIG. 3 is a sectional view showing another embodiment of the drum transport pallet of the present invention.

FIG. 4 is a sectional view showing still another embodiment of the drum transport pallet of the present invention.

FIG. 5 is a perspective view showing an example of a conventional drum transport pallet.

[Explanation of symbols]

 10 Circuit board 20 Drum 30 Air cylinder 31 Cylinder body 32 Piston 33 Piston rod 34 Extension spring 40 Link mechanism 45, 46 Link arm 47 Connecting pin 50 Electromagnet 55 Bar magnet

Claims (1)

[Scope of utility model registration request] 1. A drum transport pallet used for vertically supporting and transporting a drum, comprising: a flat plate-shaped substrate on which the drum is mounted in a vertical state; and a drum mounted on the substrate. A slide plate disposed on the substrate so as to be positioned inside and capable of moving in parallel in the vertical direction with respect to the substrate; and the slide plate and the substrate are connected to each other. By the up and down movement of the drum, it moves outward such that it is pressed against the inner peripheral surface of the drum mounted on the substrate and moves inward such that it is inserted into the drum mounted on the substrate. A drum transfer pallet comprising: a plurality of link mechanisms each having a movable connecting portion; and means for moving the slide plate in a vertical direction with respect to the substrate.