TW202144275A - Seaming device - Google Patents

Abstract

In order to obtain sufficient lubrication and heat exhaustion properties even at a low speed and using a high load, and obtain a sufficient flow rate whilst inhibiting the leakage of a lubricant, without the need to supply a lubricant at high pressure from the outside, the present invention comprises, inside a seaming roller (451), (452), a lubricant pump structure for moving lubricating oil between a lubricant channel (454) of a seaming roller pin (453) and a bearing (458).

Description

Sealing device

The present invention relates to a wrapping device including a can sealing roller for wrapping a can lid to a can body.

Conventionally, there has been known a wrapping device including a can sealing roller that wraps a can lid to a can body filled with beverages or the like. There is known a can sealing roller having: a sealing roller pin which forms a lubricant passage extending in the up-down direction inside so that the can sealing roller rotates smoothly; and a side peripheral wall provided so as to The surface forms a wrapping portion and rotates relative to the above-mentioned can sealing roller pin via a bearing; and a bottom wall, which closes the bottom of the side peripheral wall and faces the opening of the lubricant passage of the can sealing roller pin; and by self-lubricant The lubricant supplied to the passage lubricates the bearing. The lubrication of the bearing also has the function of discharging the heat generated, so it is necessary to make the lubricant flow sufficiently. Therefore, the lubricant is generally supplied by means of pressure to make the lubricant flow, but there is a pressure like the lubricant. If the flow is increased, there is a risk of lubricant leakage from the sealing part. In addition, externally, a lubricant supply mechanism capable of securing the required pressure and flow rate is required. In the example shown in Patent Document 1, the bearing space is kept in a pressurized state, the lubricant is sprayed, and the self-sealing of the lubricant is forcibly made by using the rotation action of the sealing roller as a pump. The bearing space portion of the roll is discharged to the outside of the sealing roll, thereby forming a circulation path for the lubricant to always circulate in the bearing space portion. On the other hand, if the pressure of the lubricant increases and the flow rate increases, the lubricant may leak from the sealing portion. In the example shown in Patent Document 2, a seal ring and a lubricating device thereof are proposed, which can simultaneously prevent leakage and transmission of lubricant, and are expected to improve lubricity.

In addition, in the example shown in Patent Document 3, the lubricant oil supply passage 23 (lubricant passage) in the sealing roller pin 12 is configured to communicate with the sealing pot provided in the sealing roller pin 12 The lower space 37 of the bearing 24 of the rollers 8 and 9 and the upper space 38 of the bearing 24 are connected to the above-mentioned lubricant oil supply passage 23 through the return passage 39 to form a closed circuit, and are enclosed in the sealing roller pins 12 and 12. The lubricant in the lubricant oil supply passage 23 (lubricant passage) flows outward to the bearing 24 by centrifugal force, and after lubricating the bearing 24, it returns to the oil supply passage 23 (lubricant passage) through the space 38 and the return passage 39 ), and is transported to the space 37 again, and then circulated by centrifugal force in the same way. Thereby, the external lubricant supply mechanism can be omitted, thereby suppressing the leakage of the lubricant. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 8-090118 [Patent Document 2] Japanese Patent Laid-Open No. 9-182927 [Patent Document 3] Japanese Patent Laid-Open No. 2003-170996

(The problem that the invention intends to solve)

However, in this known wrapping device, the lubricant flows only by centrifugal force, so there is a problem that a sufficient flow rate cannot be obtained, so that when used at a low speed or a high load, a sufficient flow rate cannot be obtained. Lubrication performance, heat removal performance.

The present invention is intended to solve the above-mentioned problems, and its object is to provide a wrapping device which does not require high pressure to supply lubricant from outside, can suppress the leakage of lubricant, and can obtain a sufficient flow rate even when used at low speed or high Under load, it can also obtain sufficient lubricating performance and heat removal performance. (Technical means to solve problems)

The wrapping device of the present invention has a can sealing roller for wrapping the can lid to the can body, and the can sealing roller has: a can sealing roller pin which forms a lubricant passage extending in the up-down direction inside; and a side peripheral wall, It is arranged to form a wrapping portion on the side peripheral surface, and rotate relative to the can sealing roller pin via a bearing; and a bottom wall, which closes the bottom of the side peripheral wall and is connected with the lubricant passage of the can sealing roller pin. The openings are opposite to each other, and the above-mentioned problem can be solved by having a lubricant pump mechanism for transferring lubricating oil between the lubricant passage of the can-sealing roller pin and the bearing. (Compared to the efficacy of the prior art)

According to the sealing device of the first aspect of the present invention, the lubricant pump mechanism for transferring the lubricant between the lubricant passage of the seal roller pin and the bearing is provided inside the seal roller, thereby eliminating the need to supply the lubricant with high pressure from the outside. , And can inhibit the leakage of lubricant, and can obtain sufficient flow, even at low speed or high load, can also obtain sufficient lubrication performance, heat removal performance.

According to the configuration described in the second aspect of the present invention, the bottom wall has the screw member extending upward and having the helical cutout formed on the peripheral surface, and the lubricant pump mechanism includes the lubricant passage and the screw member, thereby being constituted The so-called screw pump can reliably ensure the flow rate. In addition, regarding the flow of lubricant from the bearing to the lubricant passage, the sealing portion above the bearing can be set to a negative pressure to be sucked by the screw pump, so that the leakage of the lubricant can be further effectively prevented. According to the configuration described in the third aspect of the present invention, the bottom wall has the fin members formed radially on the upper surface, and the lubricant pump mechanism is constituted by the fin members, thereby constituting a so-called centrifugal pump, which can be reliably ensure flow.

According to the configuration described in the fourth aspect of the present invention, the sealing roller pin has the second lubricant passage that communicates with the space above the bearing and is independent of the lubricant passage, thereby enabling external supply. The lubricant is discharged to the outside, and the flow rate can be more reliably secured by pressurizing or suctioning from the outside. In addition, it can reliably discharge heat, and can also reliably cope with deterioration of the lubricant, mixing of foreign substances, and the like.

Hereinafter, the present invention will be described in detail. As shown in FIG. 1 , a wrapping device 100 according to an embodiment of the present invention includes: a can sealing turntable 101, which performs the process of wrapping the can body C and the can lid F; The can body C is conveyed and supplied to the can sealing turntable 101 in a non-rotating state; the can cap supply device 104 includes a cap separation unit 210 for supplying the can cap F and the can cap conveying turntable 250; the can discharge turntable 107, which The wrapped cans CM are carried out from the can-sealing turntable 101 ; and the conveying belt 108 is carried out, which further carries the cans CM out of the can-discharging turntable 107 to the outside. The can sealing carousel 101 , the can discharging carousel 107 and the can lid conveying carousel 250 are provided with grooves P for individually accommodating and conveying can bodies C, can bodies CM and can caps F, and are provided on the conveying conveyor 102 There is an attachment 103 which is individually transported together with the tank C card. The rotation speed of the can sealing carousel 101 , the can discharge carousel 107 and the can lid conveying carousel 250 , the moving speed of the attachment 103 of the conveying belt 102 , and the interlocking timing of each groove P and the attachment 103 are designed so that the , The way that the tank C, the tank CM and the tank cover F are smoothly transferred between the conveyor belts can be adjusted.

As shown in FIG. 2 , the can sealing turntable 101 for performing the step of wrapping the can body C and the can lid F is provided with: a can body mounting unit 350 which mounts and rotates the can body C in each of the grooves P, respectively; The head unit 320 is provided so as to face the can body mounting unit 350, and has a head 321 and an ejector pad 322, and the head 321 performs the operation on the can lid F placed on the upper part of the can body C. Positioning, the ejector pad 322 is fitted in the rolling head 321 so as to be able to move up and down so as to press the can cover F placed on the upper part of the can body C; The first and second sealing rollers 451 and 452 of the can body C.

The sealing carousel 101 is arranged so as to be rotatable around the center axis 109 in a state where the center axis X extends in the vertical direction. The can lid separation unit 210 , the can lid conveying turntable 250 , and the conveying conveyor 102 are mechanically driven by the drive mechanism 151 from the can sealing turntable 101 via a transmission mechanism.

The head unit 320 is arranged so as to be rotatable around the center axis 109 in a state where the center axis X extends in the up-down direction, facing the tank mounting unit at equal angular intervals, and supporting the head 321 at the lower end. The outer surface gear 323 of the rotating shaft meshes with the sun gear 324 supported by the central shaft 109 . The rolling head unit 320 revolves by the rotation of the central shaft 109 and the central column, and the rolling head 321 rotates by the meshing of the sun gear 324 and the outer surface gear 323 . The rolling head 321 is arranged to be fixed and rotatable in the up-down direction, as shown on the right side of the central axis X in FIG. While holding the can body C on which the can end F is placed, the outer peripheral surface of the lower end of the rolling head 321 is fitted to the can body C, whereby the center alignment of the can end F is performed. The can-sealing unit 410 is double-sealed by the can-sealing rollers 451 and 452. The can-sealing rollers 451 and 452 are pivotally connected to the rolls whose central parts are fixed to the lower end of the revolving roller swing shaft 132 in a rotational manner. Both ends of the sealing rod 450 . In the double wrapping step, after the primary wrapping of the curled portion of the can lid F into the flange portion of the can body C is performed by the can sealing roller 451, the secondary wrapping is performed, and the secondary wrapping is performed by Tightening by the can sealing roller 452 thereby compresses, joins and maintains the seal.

As shown in FIG. 3 , the can-sealing rollers 451 and 452 have can-sealing roller pins 453 extending in the vertical direction, and are provided on the outer periphery of the lower end of the can-sealing roller pins 453 in such a manner that a bearing 458 is fixed to the The lower end portion of the sealing roller pin 453 and the rolling portion 470 are rotated relative to the sealing roller pin 453 via the bearing 458 . The rolling portion 470 has a concave-convex ring-shaped wrapping portion 471 formed on the side peripheral surface for wrapping the can body C and the can lid F, and has: a cylindrical side peripheral wall 472, the top and bottom of which are open; the bottom wall 473 , which is installed on the lower end of the inner peripheral side of the side peripheral wall 472 in a liquid-tight manner to close the bottom; and an upper wall 474 , which closes the upper part of the side peripheral wall 472 . The side peripheral wall 472 is provided to rotate relative to the can sealing roller pin 453 via the bearing 458 , and the bottom wall 473 is rotated together with the side peripheral wall 472 .

Inside the sealing roller pin 453, a first lubricant passage 454 extending in the vertical direction is formed at the center in the radial direction, and a second lubricant passage 456 extending in the vertical direction is formed on the radially outer peripheral side. At the upper end of the first lubricant passage 454, a lateral passage 455 is formed which communicates with the lubricant passage (see FIG. 5) in the roller swing shaft 132, and at the upper end of the second lubricant passage 456 is formed with the inside of the roller swing shaft 132. A lateral passage 457 that communicates with the lubricant passage (refer to FIG. 5 ). The lower end of the second lubricant passage 456 communicates with the upper part of the bearing 458, and the lower end of the bearing 458 is opened in the space R between the lower end of the sealing roller pin 453 and the bottom wall 473, and the bottom wall 473 is connected to the bottom wall 473 through the gap (space R) Since it faces the opening of the lower end of the first lubricant passage 454 of the sealing roller pin 453 , the space R communicates with the lower end of the first lubricant passage 454 . The upper end of the bearing 458 and the upper wall 474 are sealed by a lubricant seal ring 475 . The bottom wall 473 has: a disc portion 476 that closes the bottom of the side peripheral wall 472; It extends upward and is inserted into the first lubricant passage 454 of the sealing roller pin 453 (in this embodiment, the lubricant passage of the bearing jig 459 inserted into the first lubricant passage 454). In the wrapping device 100 of this embodiment, a lubricant pump mechanism is formed, and the lubricant pump mechanism is formed with a lateral passage 457, a second lubricant passage 456, a bearing 458, a space R, a lubricant passage 454, and a lateral passage. The lubricant flow path communicated with 455 transfers the lubricating oil in the aforementioned path by the screw pump effect generated by the rotation of the screw member 477 accompanying the rotation of the rolling portion 470 .

In the sealing of the can body C, when the rolling portion 470 is pressed against the can lid F placed on the upper part of the can body C through the can sealing roller pin 453 by the roller swing shaft 132, the side peripheral wall 472 is closed. The concave-convex ring shape of the wrapping portion 471 is in contact with the flange portion of the can lid F, and is rolled or crimped by the driven rotation of the rolling portion 470 . When the can body C is wrapped, the lubricating oil supplied from the lubricant passage in the roller swing shaft 132 to the second lubricant passage 456 via the horizontal passage 457 is due to the negative pressure and gravity generated by the lubricant pump mechanism , flows into the bearing 458 through the second lubricant passage 456 and lubricates it while flowing down through the bearing 458, the lubricating oil reaches the space R, flows into the first lubricant passage 454 by the discharge force, and then Through the horizontal passage 455 and through the return lubricant passage in the roller swing shaft 132, it returns to the inner casing. The above-mentioned discharge force is caused by the screw pump effect generated by the rotation of the screw member 477 accompanying the rotation of the rolling portion 470. produced. After the returned oil is supplied to the upper part of the machine for lubrication again, it flows into the can sealing unit 410 by natural flow down due to gravity, and is transported to the bearing 458 again.

As shown in FIG. 4 , in the sealing device of another embodiment, the can sealing roller is attached to the upper surface of the bottom wall and has radially extending fin members to obtain a shape of a centrifugal pump effect. The structure is the same as that of the sealing roller in the sealing apparatus 100 of the first embodiment. In FIG. 4, the same code|symbol is attached|subjected to the part which has the same structure as the sealing roll of 1st Embodiment. The bottom wall 493 has fin members 497 extending radially on the upper surface of the disk portion 496 that closes the bottom of the side peripheral wall 472 . The wrapping device of this embodiment has a lubricant pump mechanism. In the lubricant pump mechanism, the lubricant flow path, that is, the lateral path, is provided by the centrifugal pump effect generated by the centrifugal force accompanying the rotation of the fin member 497. 455 , the first lubricant passage 454 , the space R, the bearing 458 , the second lubricant passage 456 , and the lateral passage 457 are transferred in this order. During the wrapping of the can body C, the lubricant supplied from the lubricant passage in the roller swing shaft 132 to the first lubricant passage 454 through the horizontal passage 455 is caused by the negative pressure and gravity generated by the lubricant pump mechanism. After reaching the space R through the first lubricant passage 454, the discharge force generated by the rotation of the fin member 497 flows into the bearing 458 toward the outside, and after lubricating the bearing 458, it passes through the second lubricant passage 456 and the horizontal The passage 457 passes through the return lubricant passage in the roller swing shaft 132, returns to the inner casing, and is transported to the bearing 458 again. In addition, the lubricant may be any of oil, grease, and water-soluble lubricant, as long as it is a fluid.

The basic operation of the wrapping device 100 configured as above will be described below. The can bodies C before the can lids F are wrapped are engaged with the attachments 103 of the conveying conveyor 102 to be conveyed, and are conveyed toward the can sealing turntable 101 rotated by the drive mechanism 151 . On the other hand, the can caps F are cut out from the can cap separating unit 210 piece by piece, and then transferred to the grooves P of the can cap conveying turntable 250, and by the rotation of the cap conveying turntable 250, the caps are moved toward the can sealing. Turntable 101 (refer to FIG. 1 ). The speed and timing of the conveying conveyor 102 and the can lid conveying turntable 250 are matched with the speed of the can sealing turntable 101 so that the center of the can body C and the can lid F coincide at the confluence point G, and the timing is adjusted so that the drive mechanism 151 The can body placing unit 350 whose rotation is controlled via an appropriate gear, a cam mechanism, etc., ascends at the junction G, thereby placing the can body C placed on the flat plate 360 with the can lid F. After that, the can body mounting unit 350 is further raised, the ejecting pads 322 in the rolling head 321 press the can cover F, and the driven mechanism 151 rotates the controlled rolling head 321 via a suitable gear, a cam mechanism, etc. Fitted to the can cover F, and the center of the can cover F is aligned, the can body C on which the can cover F is placed is clamped by the flat plate 360, the rolling head 321 and the ejector pad 322 with a predetermined axial load necessary for wrapping. hold. Then, the can sealing turntable 101 is further rotated, and before the clamped can lids F and can bodies C reach the sealing section E shown in FIG. number. During the process of passing through the wrapping section E, the wrapping rod 450 of the can sealing unit 410 fixed to the lower end of the roller swing shaft 132 swings, and is pivoted at both ends to rotate for one wrapping and two wrapping. The two can sealing rollers 451 and 452 for wrapping face the nip 321 from the side and press against the can body C and the flange of the can lid F placed on the top of the can body C in order to perform double wrapping. After the wrapping is completed, the cans CM are transferred from the can-sealing turntable 101 to the can-discharging carousel 107, which is further transferred from the can-discharging carousel 107 to the unloading conveyor belt 108, and then carried out to the next step such as inspection and packaging.

100: Rolling and sealing device 101: Sealing Turntable 102: Carrying in the conveyor belt 103: Accessories 104: Tank cover supply device 107: Tank Turntable 108: Carry out the conveyor belt 109: Central shaft 122: Up and down moving mechanism 123: Move the cam up and down 124: Move the cam follower up and down 132: Roller swing shaft 133: Up and down moving mechanism 134: Move the cam up and down 135: Move the cam follower up and down 151: Drive mechanism 156: Drive motor (servo motor) 158: Drive Motor 210: Tank Lid Separation Unit 215: Access 250: Tank cover transfer carousel 320: Rolling head unit 321: rolling head 322: Ejection pad 323: Outer Surface Gear 324: Sun Gear 350: Tank Loading Unit 360: Tablet 410: Canning unit 450: Rolling rod 451: Can Sealing Roller (one time seal) 452: Can Sealing Roller (Secondary Sealing) 453: Can Sealing Roller Pin 454: 1st Lubricant Path 455: Cross Path 456: 2nd Lubricant Path 457: Cross Path 458: Bearing 459: Bearing fixture 470: Rolling Department 471: Rolling Department 472: Side Perimeter Wall 473: Bottom Wall 474: Upper Wall 475: Lubricant seal ring 476: Disc Department 477: Screw components 480: Can Sealing Roller 493: Bottom Wall 496: Disc Department 497: Fin member C: Can body (before the can lid is sealed) CM: can body (after the can lid is rolled and sealed) E: Rolling section F: can lid G: Confluence K: bolt groove P: groove R: space V: head space X: Center axis

FIG. 1 is a schematic diagram showing an example of the configuration of a crimping device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing an example of the configuration of a crimping device according to an embodiment of the present invention. Fig. 3 is a cross-sectional view showing an example of the configuration of the sealing roller of the sealing device according to the embodiment of the present invention. Fig. 4 is a cross-sectional view showing an example of the configuration of a sealing roller of a sealing device according to another embodiment of the present invention. Fig. 5 is a schematic view showing the flow of lubricant in the wrapping device according to one embodiment of the present invention.

451: Can Sealing Roller (one time seal)

452: Can Sealing Roller (Secondary Sealing)

453: Can Sealing Roller Pin

454: 1st Lubricant Path

455: Cross Path

456: 2nd Lubricant Path

457: Cross Path

458: Bearing

459: Bearing fixture

470: Rolling Department

471: Rolling Department

472: Side Perimeter Wall

473: Bottom Wall

474: Upper Wall

475: Lubricant seal ring

476: Disc Department

477: Screw components

R: space

Claims (4)

A wrapping device, which is provided with a can sealing roller for wrapping a can lid to a can body; it is characterized in that: The can sealing roller includes: a can sealing roller pin which forms a lubricant passage extending in the vertical direction inside; Rotation; and a bottom wall that closes the bottom of the above-mentioned side peripheral wall and faces the opening of the above-mentioned lubricant passage of the above-mentioned can sealing roller pin; Inside the can sealing roller, there is a lubricant pump mechanism for transferring lubricant between the lubricant passage of the sealing roller pin and the bearing. The crimping device of claim 1, wherein the bottom wall has a screw member extending upward and forming a helical cutout on the peripheral surface, The lubricant pump mechanism includes the lubricant passage and the screw member. The crimping device of claim 1, wherein the bottom wall has radially formed fin members on the upper surface, The said lubricant pump mechanism is comprised by the said fin member. The crimping device according to any one of claims 1 to 3, wherein the can sealing roller pin has a second lubricant passage that communicates with the space above the bearing and is independent of the lubricant passage .

Images