JPH0595928U - Can body carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] To securely hold and hold can bodies of different lengths. [Structure] When a long can body K1 is conveyed, the inside of the through hole 55 is kept at a negative pressure, and the valve body 56a of the valve mechanism 56 is moved so that the two suction passages 52 and 53 and the through hole are separated from each other. The can body can be surely adsorbed and held by the respective adsorbing passages. When the short can body K0 is conveyed, the valve mechanism 56 closes the communication between the suction passage 53 and the through hole 55 to prevent the suction force from decreasing.
The can body can be securely sucked and held.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a can body carrier, and more particularly, to a can body carrier used for adsorbing the can body using depressurized air and carrying it to the next step.

[0002]

[Prior Art]

 Conventionally, as a can body transporting device used to carry a can body whose inner and bottom surfaces have been coated to the next step, the side surface of the can body fits into the outer peripheral surface of the thick disk-shaped seating member. A plurality of semi-circular recesses with a certain height are formed at regular intervals along the circumferential direction of the seating member, and the seating member is rotated while the side surface of the can body is held in the recesses, According to this, the can barrel is used for the next process. As a means for holding the can body on the seating member, the seating member is provided with a through hole penetrating the seating member and one suction passage communicating with the through hole and opened on the inner peripheral surface of the recess. A technique is used in which the pressure reducing means is formed and connected to the through hole.

In such a conventional device, a negative pressure is applied to the inside of the suction passage in a state where the side surface of the can body is in contact with the inside of the recess portion, whereby the side surface of the can body is sucked into the recess portion. Can be held.

By the way, in such a conventional device, since one suction passage is provided, when transporting a can body having a different length, the seating member suitable for the length of the can body is exchanged each time. It was necessary, and there was a machine downtime to adjust the position of the seating member during the replacement work.

Further, when mounting a seating member that matches each can body size on the machine body, it is necessary to match the phase of the recess and the turret member in the previous step. The suction power of the can body of will be insufficient. For this reason, there is a risk that the can body may pop out from the seating member that rotates at a high speed.

[0006]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a can body transporting device that can surely adsorb and hold can bodies of different lengths.

[0007]

[Means for Solving the Problems]

 In the can body transporting device according to the present invention, a seating member penetrates through the seating member, a through hole having a negative pressure inside, and a through hole communicating with the through hole and opening on the inner peripheral surface of the recess. , A plurality of suction passages arranged at intervals with each other are formed, and at least one suction passage of the plurality of suction passages opens and closes communication between the opening end located on the concave side and the through hole. The opening and closing means is attached.

[0008]

[Action]

 According to the can body transporting device of the present invention, when a long can body is transported, a negative pressure is set in the through hole, a plurality of suction passages and the through hole are communicated with each other, and the suction passages are connected to each other. The body can be securely held by suction. When transporting a can body that is short and cannot be brought into contact with all the suction passages, the suction end of the suction passage that does not come into contact with the can body and the through hole The communication is closed and the through hole is isolated from the outside. As a result, it is possible to prevent the internal pressure of the remaining suction passage, that is, the suction passage that can be adsorbed to the can body, from rising, and prevent the lowering of the suction force, so that the can body can be securely held by suction.

[0009]

【Example】

 An embodiment in which the can body conveying device according to the present invention is applied to a can body coating device will be described with reference to FIGS.

As shown in FIG. 1, a transport feeder 12 for transporting the can body K is provided on the upper part of the base 10, and downstream of the carrier feeder 12, the can body K is transported downstream by rotation. A first turntable 14 is provided, and two spray guns 15 constituting an inner surface coating mechanism 16 for coating the inner surface of the can body K are provided in the middle of the transport path of the can body K by the first turntable 14. It is provided in. Further, downstream of the first turntable 14, there is provided a second turntable 17 which receives the can body from the first turntable 14 and conveys it further downwardly. A bottom coating mechanism 19 for coating the outer surface of the bottom of the can body K is provided in the middle of the K transport path. Further, a third turntable (cylinder carrier device) 20 according to this example is provided downstream of the second turntable 17. The third turntable 20 receives the can body K from the second turntable 17 and conveys the can body K to the carry-out path.

Next, a detailed configuration of the coating apparatus of this example will be described based on FIGS. 2 and 3.

First, the structure of the first turntable 14 will be described. A shaft 21 is horizontally projected from the base 10. A gear 22 is attached to the base end of the shaft 21, and the gear 22 is connected to a motor via an index (not shown). The intermediate portion of the shaft 21 is rotatably supported by a bearing 23. A circular plate member 24 is fixed to the end of the shaft 21, and a pedestal 25 on which the bottom of the can body K abuts is placed on the periphery of the plate member 24. It is provided at 45 ° intervals. A plate-shaped member 26 is fixed to the end of the plate-shaped member 24 closer to the tip end side. A semicircular cutout 27 is formed on the peripheral edge of the plate-shaped member 26 so as to correspond to the base portion 25 of the plate-shaped member 24 (see FIG. 2). A roller 29 with which the outer surface of the can body K abuts is rotatably attached to the bottom of the cutout portion 27. Further, a roller 28 with which the outer surface of the can body K abuts is rotatably attached to the boundary between the adjacent notches 27. A plate-shaped member 30 is fixed to the end of the shaft 21 that is closer to the tip than the plate-shaped member 26. A roller 33 with which the outer surface of the can body K abuts is rotatably attached to the peripheral portion of the plate member 30 (see FIG. 3).

Next, the structure of the second turntable 17 will be described. A shaft 35 is horizontally projected from the base 10, and a gear 36 is attached to the base end of the shaft 35. The gear 36 is meshed with the gear 22. The intermediate portion of the shaft 35 is rotatably supported by a bearing 37. A plate-shaped member 38 is fixed to the end of the shaft 35 via a mounting member 39. Semicircular cutouts 40 are provided at 45 ° intervals on the peripheral edge of the plate-shaped member 38. It is being done. A pair of rollers 41, which the outer surface of the can body K contacts, is rotatably attached to the bottom of the cutout 40. Further, a pair of rollers 42 with which the outer surface of the can body K abuts is rotatably attached to the boundary between the adjacent notches 27.

Next, the structure of the third turntable 20 will be described. A shaft 45 is horizontally projected from the base 10, and a gear 46 is attached to the base end of the shaft 45. The gear 46 is meshed with the gear 36. The intermediate portion of the shaft 45 is rotatably supported by a bearing 47. A seating member 48 formed in the shape of a thick disk is fixed to the end of the shaft 45 via a bush 49. The seating member 48 is provided with circular notches 50 at intervals of 45 ° for reducing the weight of the seating member 48. Further, on the outer peripheral surface of the seating member 48, a recess 51 having a size into which the side surface of the can body K fits is formed between the adjacent notches 50. A circumferential groove 54 is formed in an intermediate portion in the longitudinal direction of the seating member 48, and the above-mentioned recess 51 is axially divided into a base-side recess 51a and a tip-side recess 51b. The seat member 48 is provided with a through hole 55 penetrating in the axial direction. A pressure reducing device (not shown) is connected to the upstream side of the through hole 55 so that the inside of the through hole 55 can have a negative pressure. Further, from the upstream side of the through hole 55, an adsorption passage 52 is formed extending toward the base-side recess 51a, and the adsorption passage 52 is open to the inner peripheral surface of the base-side recess 51a. Further, from the downstream side of the through hole 55, an adsorption passage 53 is formed extending toward the tip side concave portion 51b, and the adsorption passage 53 is opened to the inner peripheral surface of the tip side concave portion 51b. As a result, the seating member 48 has a plurality of suction passages arranged at intervals in the axial direction of the can body K to be held in the recess 51.

Further, between the suction passage 53 and the through hole 55, which are located on one side in the axial direction of the can body K held in the recess 51, a valve mechanism (opening / closing means) 56 for opening and closing the communication therebetween. Is provided.

The detailed structure of the valve mechanism 56 will be described below with reference to FIG.

The valve mechanism 56 is provided integrally with a cylindrical valve body 56a slidably fitted in the through hole 55 and an end portion of the valve body 56a, and has a slightly enlarged diameter. It has a head portion 56b, an O-ring 56c interposed between the valve body 56a and the through hole 55, and a through hole 55a communicating with the through hole 55, and is fixed to the side surface of the seating member 48. It is composed of a bracket 56d and a ball plunger 56e which is screwed from the bracket 56d toward the valve body 56a and whose tip faces the body 56a.

Then, on the side surface of the valve body 56a, two grooves 56g and 56h which are axially separated from each other and engage with the ball plunger 56e, and between these two grooves, Two columnar protrusions 56i (see FIG. 5) are formed so as to protrude in the radial direction. Here, the separation distance D1 between the two grooves 56g and 56h is set to be slightly longer than the separation distance D2 between the base side end surface of the valve body 56a and the opening end of the adsorption passage 53, and the groove 56h is formed. The through hole 55 and the suction passage 53 can be communicated with each other in a state of being engaged with the ball plunger 56e. Further, a groove (not shown) is formed on the inner surface of the through hole 55 to allow the columnar protrusion 56i to move in the extracting direction (leftward in FIG. 4).

Further, a recess 56k having a size capable of accommodating the two protrusions 56i is formed on the outer surface of the bracket 56d.

Next, a method of coating a short can body K with the coating apparatus of this embodiment will be described.

The can body K loaded from the transport feeder 12 is in a state where its bottom portion is in contact with the base portion 25 of the first turntable 14 and its outer surface is in contact with the rollers 28, 29, 33. In this state, the plate-shaped member 24 is conveyed in the arrow direction shown in FIG. During this transportation, the inner surface of the can body K is painted by a spray gun as in the conventional case.

After that, the can body K is delivered to the second turntable 17. The can body K loaded from the first turntable 14 is conveyed in the direction of the arrow shown in FIG. 2 with the intermittent rotation of the plate-like member 38 with the outer surface thereof being in contact with the rollers 41 and 42. At this time, the can body K is conveyed from the rollers 41 and 42 with its bottom portion protruding, and during this conveyance, the outer surface of the bottom portion of the can body K is painted by a spray gun as in the conventional case.

After that, the can body K is transferred from the second turntable 17 to the third turntable 20, and the outer side surface thereof is housed in the recess 51 of the seating member 48. In the device of the present example, the inside of the through hole 55 is preliminarily set to a negative pressure, whereby the can body K can be sucked and held in the recess 51 via the suction passage 52. In this state, as shown in detail in FIG. 4, in the short can body K, the bottom of the can body K projects from the seating member 48, and the open end K0 of the can body K has a circumferential groove. It will be in the state facing 54.

Here, according to the apparatus of this example, one of the two adsorption passages 52 and 53 is closed by the valve body 56 a of the valve mechanism 56, and the communication with the through hole 55 is closed. Therefore, the outside air does not flow into the through hole 55 from the passage 52, the pressure increase in the passage 52 is prevented, and the can body K can be reliably adsorbed. In addition, the suction power can be prevented from being wasted, and the can suction time can be shortened.

Subsequently, the seating member 48 is intermittently rotated to carry the can body K in the direction of the arrow shown in FIG. 2, and after carrying it for about half in the circumferential direction of the third turntable 20, shown in FIG. Discharge in the direction of the arrow.

Here, other members do not project into the transport path of the can body K, and the bottom of the can body K does not come into contact with other members during transport. Therefore, even if the can body K is transferred from the second turntable 17 to the third turntable 20 immediately after the bottom part of the can body K is painted and conveyed, the bottom part of the can body K interferes with other members. It does not damage the coating immediately after coating. Further, since the can body K is sucked and positioned by the seating member 48, the can body K is transported while maintaining a certain posture, and the can body K does not roll, thus preventing unevenness in the coating film. Be touched.

Further, the can whose inner surface of the can body K is coated by the inner surface coating mechanism and the bottom coating mechanism passes through the second turntable 17 and the third turntable 20. Since there is no discharge guide, etc., there is no paint adhesion and stable transport is possible.

Further, in the apparatus of this example, when coating a long can body K, the following operation is performed.

That is, first, after stopping the device, the head portion 56b of the valve mechanism 56 is pinched with fingers and pulled out to the near side (left side in FIG. 4) (two-dot chain line in FIG. 4). Then, when the groove 56h engages with the ball plunger 56e, and when it is felt that the pullout resistance has increased, the pullout is stopped, the head 56b is rotated 90 ° about the axis, and the protrusion projecting on the main body 56a. 56i is stored in the recess 56k. This allows the adsorption passage 53 and the through hole 55 to communicate with each other.

Next, the apparatus is driven again to start the transportation of the long can body K. At this time, in the third turntable, the opening end K1 thereof is arranged at a position closer to the tip end side than the opening end K0 of the short can body K, that is, slightly to the tip end side of the tip end side concave portion 51b.

Therefore, according to the apparatus of this example, the suction passage 53 can suck and hold the vicinity of the opening end K1 of the can body K, and the suction passage 52 can suck and hold the vicinity of the closed end of the can body K. Therefore, a sufficient suction force can be obtained, and the long can body K can be reliably held and transported. Therefore, even if the seating member 48 rotates at a high speed, the long can barrel K can be prevented from popping out, and the manufacturing efficiency of the can barrel K can be improved.

Further, according to the apparatus of the present example, it is possible to easily cope with both long and short can bodies K by operating the valve mechanism 56, and it is possible to securely hold the can body K. The versatility of the device can be improved.

In the apparatus of this example, two adsorption passages are provided in the axial direction of the can body K, and they are switched depending on the length of the can body K, but three or more adsorption paths are used. A suction passage may be provided and switched for use. In this case, there is an advantage that it can be transported in correspondence with the can bodies K having various lengths.

Further, in the apparatus of this example, the valve mechanism 56 is configured to block the communication between the suction passage 53 and the through hole 55. For example, a valve is provided in the suction passage 53, and the suction passage is formed by this valve. The configuration may be such that 53 is closed. In short, if the structure is such that the communication between the opening end of the suction passage on the concave portion 51 side and the through hole 55 can be opened and closed, the communication between the through hole 55 and the outside can be opened and closed, and the long and short can body K It is possible to transport each of them.

[0035]

[Effect of the device]

 In the can body transporting device according to the present invention, a seating member penetrates through the seating member, a through hole having a negative pressure inside, and a through hole communicating with the through hole and opening on the inner peripheral surface of the recess. , A plurality of suction passages arranged at intervals with each other are formed, and at least one suction passage of the plurality of suction passages opens and closes communication between the opening end located on the concave side and the through hole. Since the opening and closing means is attached, it is possible to reliably hold and convey a long can body. Therefore, even if the seating member rotates at a high speed, it is possible to prevent the long can barrel from popping out, and improve the manufacturing efficiency of the can barrel.

In addition, since it is possible to easily hold the long and short can bodies by opening and closing the communication between the suction passage and the through hole, the versatility of the device is enhanced. be able to.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a coating device for a can body according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a partially cutaway side view of FIG.

FIG. 4 is an enlarged view of a main part of FIG.

FIG. 5 is a cross-sectional view of a valve body used in an embodiment of the present invention.

[Explanation of symbols]

 20 3rd Turntable (Can barrel carrier) 48 Seating mechanism 51 Recesses 52/53 Suction passage 55 Through hole 56 Valve mechanism (Opening / closing means)

Claims (1)

[Scope of utility model registration request] 1. A semicircular recess into which the side surface of the can body fits is formed on the outer peripheral surface of a seating member formed in the shape of a thick disk, and the side surface of the can body is held in this recess. In the can body transporting device for transporting the can body to the next step by the rotation of the seating member, the seating member penetrates the seating member, and a through hole having a negative pressure inside,
A plurality of adsorption passages, which communicate with the through hole and are opened on the inner peripheral surface of the concave portion and are arranged at intervals with respect to each other, are formed, and at least one adsorption passage of the plurality of adsorption passages is formed. The can body transporting device is characterized in that an opening / closing means for opening / closing the communication between the opening end located on the side of the recess and the through hole is attached to the passage.