MXPA94008367A

MXPA94008367A - A mounting of basket loader for press paramontar llan

Info

Publication number: MXPA94008367A
Application number: MXPA/A/1994/008367A
Authority: MX
Inventors: C Imler Donald; A Keller Dirk
Original assignee: National Feedscrew & Machining Ind Inc
Priority date: 1993-10-29
Filing date: 1994-10-28
Publication date: 1997-08-01

Abstract

The present invention relates to a magazine for press for mounting rims, characterized in that it comprises: a frame, a plurality of tire covers mounted for radial movement in the frame, an adjustment plate mounted for rotation with respect to the frame and connected to each one of the covers by means of a respective link in such a way that the rotation of the adjusting plate causes the radial movement of the covers; an actuating plate mounted for rotation with respect to the frame by the operation of activation means connected to the plate actuator; and means for releasably attaching said actuator adjustment plates so that, when the plates are joined, they rotate together by operation of the activation means, and upon being decoupled, the adjustment plate can be rotated to fix the displacement limit for the cubiert

Description

IMPROVEMENTS IN A BASKET MOUNTING PRESS LOADER TO MOUNT TIRES INVENTORS: 1) DONALD C. IMLER and 2) DIRK A. KELLER; Citizens Ñor teamericanos, with address: 1) R.D. # 3, Volant, Pennsylvania -16156, E.U.A., and 2) 393 Cunningham Road, Salem, Ohio 44460, E.U.A. respectively.

CAUSAHIENT: NATIONAL FEEDSCREW & MACHINING INDUSTRIES, INC., -A North American Society, organized and existing in accordance with the Laws of the State of Ohio, E.U.A., located at: 577 Ober lin Road, S.W. , Massillon, Ohio 44646, E.U.A.

EXTRACT OF THE INVENTION A mounting of a wheel loader basket for rim wheels includes a frame; a plurality of tires mounted to allow radial movement on the frame; an adjustment plate mounted for rotation with respect to the frame and connected to each of the tires by means of a respective link so that the rotation of the adjustment plate causes the radial movement of the covers; an actuator plate mounted for rotation with respect to the frame by the operation of activation means connected to the actuator plate; and means for releasably coupling the adjustment plate with the actuator plate so that, when connected, they rotate together by operation of the activation means, and when disconnected, the adjustment plate can be rotated to set a limit of movement for the covers. BACKGROUND OF THE INVENTION The invention relates in general to tire loaders, and more specifically to the mechanisms for regulating the movement and placement of tire covers used with such apparatuses. Tire loaders are well known in connection with automated tire machinery, such as tire presses. A tire loader is typically used to lift an uncured or cured tire and place it in a tire die that is part of a tire press. A rim loader includes a charger basket having tire covers used to attach to each uncured tire, usually by means of exerting slight pressure against the heel. This is accomplished by sliding or extending the covers horizontally to a position where they can engage with the heel. After having been the rim gripped by the tires, the loader is displaced (usually in vertical and horizontal directions) by means of an elevator assembly, to a position near the press matrix to mount rims in such a way that the rim unvulcanized is centered with the cavity of the matrix. The covers, then, are retracted so that the unvulcanized tire falls into the cavity of the matrix. The loader, then, is returned to its original position to pick up another uncured tire while the tire inside the press is being vulcanized. In a double tire process, two wheel loaders are used to load two uncured tires on the press during each transfer operation. An important feature of this design for wheel loaders is the control mechanism used to move and position tire covers. An example of a prior art wheel loader basket is set forth in U.S. Patent No. 4,279,438 (the '438 patent) assigned to Singh. In the '438 patent, the movement and placement of tire covers are achieved using a horizontal and stationary support plate and a horizontal and rotating circular plate, the latter being connected to the covers by respective connecting rods or connectors. The covers move radially by means of the sliding action on a corresponding amount of horizontal sliding bars as the circular plate is rotated. The circular plate is rotated in an oscillating manner by a piston cylinder having at one end a rod connected to the circular plate. The blind end of the cylinder is mounted on the support plate. The stroke of the cylinder rod determines, then, to what extent the circular plate that rotates determines the extension of the covers radially outwards is rotated. An important aspect of the mechanism of movement for the movement and placement of the covers is the ability to adjust the radial extent or displacement of the covers on the slide bars. This is necessary because a typical loader basket is used to pick up tires of various diameters, then the radial exten- sion of the covers must be able to be adjusted according to the particular diameter of the rim to be gripped. In the '438 patent, the displacement distance of the covers is adjusted by means of a blow-limiting assembly. This assembly physically limits the stroke of the piston cylinder to a predetermined amount by the manual use of adjustable, impact-limiting locknuts. Using the stroke limiting assembly described in the '438 patent, the extended position of the covers can be fixed only by the adjustment of the limit stops. This results because the linking mechanism of the charger covers are always connected to the piston cylinder by means of the circular rotary plate. It would be difficult and impractical to move the covers against the resistance of the cylinder. Therefore, the coupling limiter assembly must be calibrated separately so that the stops can be placed precisely by the operator, depending on the diameter of the tires to be picked up. The use of mechanical stops also results in the piston cylinder not being used in its entire stroke in most cases. There is a need, then, for a tire saddle cover adjusting mechanism that can be put into operation more quickly and easily for accurate fixing of the extended position of tire covers. SUMMARY OF THE INVENTION The present invention provides improvements in the design of tire loading basket assemblies on such assemblies found in the prior art. Specifically, the present invention allows the user to quickly and easily fix the desired engagement position of the tire covers by activating some lever arms attached to the loading basket. The extended or latching position of the tire covers can then be fixed automatically without the need to change the position of an adjustable stop or other similar mechanism. In addition, the piston can be used for all its stroke to overtake and retract the tire covers, and the action of the piston is not limited by the presence of a stop mechanism.

To achieve the aforementioned purposes, the invention contemplates in one embodiment a mounting of magazine loader for press for mounting tires including a circular frame; a plurality of tire covers, each mounted on the frame for radial movement between an extended position and a retracted position; a rotating actuator plate between the first and second positions co -presenting the extended and retracted positions of the cover; and an adjustment plate interconnected with each cover and which can be connected for rotation with the actuator plate to cause radial movement of the covers, so that when disconnected from the actuator plate, it can be rotated to determine the extended positions of the actuator plate. the covers. These and other aspects and advantages of the present invention will be readily understood and appreciated by those skilled in the art by means of the following detailed description of the preferred embodiments, the best mode for carrying out the invention in view of the drawings being contemplated. attachments BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a planar top view of a mounting of a magazine basket for rims according to the present invention. Figure 2 is a side elevation of the wheel loader basket assembly shown in Figure 1. Figure 3 is a planar bottom view of the wheel loader basket assembly of Figure 1, and Figure 4 is an opposite side elevation of the wheel loader. mounting of the wheel loader basket shown in Figure 1.

DETAILED DESCRIPTION OF THE INVENTION Referring to the drawings, the embodiment of a mounting of the wheel loader basket, according to the present invention, is designated in general with the reference number 10. Some characteristics of the mounting of the wheel loader basket 10 they are similar to the loading crates already known in the prior art and need not be described in detail herein. To the extent that certain features of the embodiment described herein differ from the design of the prior art carriers and are specifically related to the practice of the present invention, these features will be described herein. The present invention is directed primarily to the mechanism for adjusting the displacement distance of tire covers used with such a tire magazine basket apparatus. The wheel loader basket 10 includes a circular or star frame 12 having a plurality (in this case, six) radially extending horizontal sliding bars 14 and which are spaced equidistantly around the body 16 of the frame 12. A block of Sliding 18 is mounted using a dovetail arrangement (Fig. 2) in a corresponding slot 32 in each slide bar 14. Each slide block 18 carries a respective tire cover 20. Each cover 20 includes a vertical extension rib. which is slightly curved in the base 22. The curved portion 22 is used to engage with the heel of the green tire (not shown) in such a way that the tires can hold the green tire while the loader is moved to the matrix of the press to mount tires. All the cover and slide block configurations are preferably the same.

Each slide block 18 consists of a self-aligning structure made of an elastomeric material such as phenolic resin having lubricating properties. In the drawings of the current application, the sliding blocks 18 are shown in a retracted position, although the covers are shown in both retracted 20 and extended 20 'positions, the last one being shown with broken lines.

Each cover 20 is attached at its upper end to a cover mounting plate 24. Each mounting plate 24 is engaged with the respective shift block 18 by means of clamps 26 which are screwed with a bracket plate 28 of the sliding block. . A connecting post 10 extends vertically from each sliding block 18 through the slotted opening 32 in each respective slide bar 14. The upper end of each connecting post 30 has a remote end 34 of a link 36 pivoted thereto. Preferably, a bushing 38 is provided to hold each remote link end 34 so that each link can move freely in pivot around its post 30. As best shown in FIGS. 1 and 2, each link 36 is used to connect to a sliding block 18 relative to the circular plate 40 in such a way that, when the circular plate 40 is rotated (by means to be described later), the blocks 18 slide along the slide bars 14. Each link junction 36 is pivotally connected by one end of a pin 37 to the circular plate 40 through, for example, a bolt and nut assembly 39. With this arrangement, the sliding blocks 18, and therefore the covers 20 of the magazine attached thereto, can be moved to a radially extending position (when the circular plate is rotated in the direction against the clock handles, as seen in Figure 1) shown by the position 20"of Figures 2, 3 and 4, for what The tires can catch on the heel of a tire. By rotating the circular plate 40 in the opposite direction, the sliding blocks move the covers to a retracted position 20, as shown in Figure 3, to drop the green tire on the die. The circular plate 40 is fixed with, for example, a welded or welded joint, to a rotary die sleeve 42 in a vertical extension pin 48, as shown by references 44, 46. The upper end of the pin 48 may include a mounting plate 50 or other suitable means for attaching the loading basket 10 to a lifting frame (not shown) used to move the loading basket 10 vertically and horizontally relative to the lower die of the tire mounting press. The construction and operation of the lifting frame are well known and do not need to be described here. Axially spaced above the circular plate 40 there is an adjustment plate 52 which is also fixedly fixed to the sleeve 42 with, for example, a welded or welded connection. According to this configuration, when rotating the adjusting plate 52, the circular plate 40 is also rotated. An adjusting handle 54 is joined similarly to the sleeve 42 so that the handle can be used to manually rotate the sleeve 42 and the plates adjustment and circular 40, 52 connected to it. An actuator plate 56 is connected, as shown by reference 58, to the plug 48 so that the actuator plate is free to rotate around the plug 48. The actuator plate 56 can be rotated in the direction of and opposite to the clock handles in an oscillating form by means of a piston cylinder assembly 60. The piston cylinder assembly 60 includes a push rod 62 having a remote end pivotally connected, as shown by reference 66, to a projection 64 of the actuator plate 56. The blind end of the piston cylinder assembly 60 is supported by a trunnion bracket 68 secured to the support arm 70. The support arm 70 is fixedly mounted to the pin 48 by means of the bracket 72.

The push rod 62 is movable between a first retracted position or position and a second extended position or position (the retracted position is shown in the drawings). When the rod 62 is extended by the operation of the piston cylinder, the actuator plate 56 rotates around the plug 48 in the opposite direction to the clock handles (as seen in Figure 1). When the rod 62 is retracted, the actuator plate 56 rotates in the direction of the clock handles. In accordance with an important aspect of the present invention, the actuator plate 56 can be fixedly attached or attached to the adjustment plate 52 by means of a handle mechanism 74 in the manner that the actuator plate 56 and the adjustment plate 52 are rotate together in a predetermined relationship with one another as the push rod 62 is extended and retracted. The handle mechanism 74 can also be operated to release or disengage the actuator plate 56 and the adjustment plate 52, thus allowing free rotation of the adjustment plate 52 by operation of the adjustment handle 54. As shown in Figure 1, the actuator plate 56 includes a pair of arcuate grooves 76, 78 spaced radially from one another. The handle mechanism 74, in this case, includes gripping elements 80, 81 which extend through the arcuate grooves 76, 78 respectively, and are fixed to the adjustment plate 52. The gripping elements 80, 81 are activated manually by means of respective handle grip 74a and 74b, and are mounted on a gripper link 82 located on top of the actuator plate 56. As the grip handles 74a and 74b are tightened by an operator, the actuator plate 56 is firmly grasped between the link 82 and the adjustment plate 52, thereby attaching the actuator plate to the adjustment plate for mutual rotation in response to the movement of the push rod 62. When the grip handles 74a, 74b, the slots are loosened. arched 76, 78 allows an operator to turn the adjustment plate 52 is rotated with respect to the actuator plate 56 by means of the rotation of the adjusting handle 54. The grip action of the mechanisms 74 can be effected, for example, by a cam-type action which compresses the link 82 with the actuator plate. 56 and the adjustment plate 52. Alternatively, the gripping handles may be of a threaded design so that, when the handles are rotated, the gripping link, the actuator plate and the adjustment plate are joined together. The arcuate grooves 76, 78 thus allow rotation of the adjustment plate 52 by means of the adjusting handle 54 within a range of angular displacement positions relative to the actuator plate 56, when the actuator plate 56 and the adjustment plate 52 are not caught. The range of angular displacement positions between the plates 52, 6 is defined by the lengths of the arches of the arcuate grooves 76, 78, whose lengths can be selected as a function of the different rim diameters to be gripped by the covers for tires 20. The mounting of the wheel loader basket also preferably has a rim proximity switch assembly 90 which is engaged by the rim fabric as it is loaded on the covers 20. The switch assembly 90 is connected to the press control system for mounting rims. The operation of the rim proximity switch assembly is well known in the art and does not need to be explained here. OPERATION During the use of the wheel loader basket 10, an operator can easily adjust the radial extent of the loader covers 20 by first, disconnecting the adjusting plate 52 from the actuator plate 56, by loosening the gripping handles 74a, 74b. After the plates are released from one another, the operator uses the adjustment handle 54 to rotate the adjustment plate 52, whose rotation correspondingly displaces the covers 20 by means of the connecting links 36 and the sliding blocks. 18, to place the covers 20 to engage the heel of a rim (as a function of the radius of the tires to be picked up). The push rod 62 is then fully extended (it is intended to use the full stroke of the piston cylinder), after which the grip handles 74a, 74b are tightened to grip the actuator plate 56 to the adjustment plate. 52. In this form, the extended and adjusted position of the covers 20 corresponds to the full extension of the push rod 62. Subsequently, the operation of the piston cylinder 60 causes the rotation of the gripped plates 52, 56, thereby causing the displacement of the covers 20 between their extended and retracted positions. The adjusting plate 52 can then be selectively positioned in a fixed relationship with respect to the actuator plate 56 in any of a range of positions as the elements 80, 81 move within the slots 76, 78. The fixed position selected from the adjustment plate 52 with respect to the actuator plate 56 determines the location of the extended and retracted positions resulting from the covers 20 upon activation of the piston cylinder 60. The extended position of the covers 20 can then be selected from the position 20 'shown in Figure 2, and the position "shown in Figure 2, reaching the extended position 20 'when the gripping elements 80, 81 are at one end of the activation grooves 76, 78, and reaching the extended position 20" when the gripping elements 80, 81 are at the other end of the activation grooves 76, 78.

In this way the invention provides a tire cover adjustment mechanism through which the extended position of the tires 20 can be fixed directly and precisely by the operator to grip the green tires without applying excessive pressure to the heel of the tire. rim, and without the operator having to rely on calibration marks or other indirect estimates of the extended position of the tire. The adjustment mechanism can be activated easily by loosening the grip handles and the adjustment handle to fix the extended position of the covers.

Although the invention has been shown and described with respect to specific embodiments thereof, this has been done for illustrative and non-limiting purposes, and other variations and modifications of the specific embodiments presented and described in other embodiments will be apparent to those skilled in the art. the present that fit within the spirit and scope of the invention as presented in the appended claims.

Claims

CLAIMS Having described the invention, it is considered as a novelty and therefore the content of the following clauses is claimed as property:

1. Improvements in a mounting of magazine charger for press for mounting rims, characterized in that it comprises: a frame; a plurality of tire covers mounted for radial movement in the frame; an adjustment plate mounted for rotation with respect to the frame and connected to each of the covers by means of a respective link in such a way that the rotation of the adjustment plate causes the radial movement of the covers; an actuator plate mounted for rotation with respect to the frame by the operation of activation means connected to the actuator plate; and means for releasably attaching said adjustment plates and actuator so that, when the plates are joined, they rotate together by means of the operation of the activation means, and upon being decoupled, the adjustment plate can be rotated to set the limit of displacement for the covers.

2. Improvements in the mounting of the magazine basket according to clause 1, characterized in that the covers can be moved radially between positions extended and retracted when the actuator plate is rotated between first and second positions when it is joined with the adjustment plate.

3. Improvements in the mounting of the loader basket according to clause 2, characterized in that the joining means comprise a handle mechanism for engaging the actuator plate to the adjustment plate within a range of positions of angular displacement one with respect to the other .

4. Improvements in the assembly of loader basket according to clause 3 characterized in that the handle mechanism comprises a stop of gripping elements each having gripping and loosening positions, said gripping elements working in the gripping position to engage the plate actuator between a gripping link and the adjustment plate, the adjusting plate being rotatable with respect to the actuator plate when the gripping elements are in their loosening position.

5. Improvements in the mounting of the loader basket according to clause 4, characterized in that the actuating plate includes a pair of arched grooves cooperating with the gripping elements to allow the adjusting plate and the actuating plate to be fixedly coupled with an angular displacement relative between medium.

6. Improvements in the assembly of the loader basket according to clause 4. characterized in that the adjustment plate can be rotated by a handle fixed to the adjustment plate.

7. Improvements in the mounting of the loader basket according to clause 2, characterized in that the activation means comprise a piston cylinder operating between an extended position and a retracted position corresponding respectively to said first and second positions of the plaque.

8. Improvements in the assembly of the loader basket according to clause 7, characterized in that the covers move radially to an extended position when the piston is extended, and to a retracted position when the piston is retracted, whereby the tires subject by the covers can be loaded on the respective press dies for mounting tires, the covers then being retracted by means of the operation of the piston cylinder.

9. Improvements in the mounting of the magazine basket according to clause 8, characterized in that the extended position of the covers can be adjusted using an adjustment handle when the adjustment and actuator plates are decoupled.

10. Improvements in the mounting of the loader basket according to clause 9, characterized in that the adjustment plate is joined to the links by means of a third plate fixedly fixed in a rotating sleeve to which the adjustment plate is also fixed, said connections being connected links to said third plate so that the rotation of the third plate by means of the operation of the piston cylinder causes the covers to move between their extended and retracted positions.

11. Improvements in the assembly of the loader basket according to clause 10, characterized in that said adjustment handle is fixedly attached to said sleeve.

12 Improvements in the mounting of the loader basket according to clause 11, characterized in that the sleeve is stuck to a pin which can be connected to the mechanism for the vertical and horizontal movement of the loader basket with respect to the press for mounting tires.

13. Improvements in the mounting of a magazine for a press for mounting rims characterized in that it comprises: a plurality of tire covers, each mounted on a frame for radial movement between an extended position and a retracted position; a rotatable actuator plate between first and second positions corresponding to the extended and retracted positions of the covers; and an adjustment plate interconnected with each cover and that can be joined for rotation with the actuator plate to cause said radial movement of the covers, and which, when disconnected from the actuator plate, can be rotated to determine said extended positions of the covers.

14. Improvements in the assembly of loader basket according to clause 13 characterized in that it also comprises handle means for fixedly joining said actuator and adjustment plates to allow said plates to rotate together, and to uncouple said plates to allow the rotation of said plates. adjustment plate relative to said actuator plate.

15. Improvements in the assembly of loader basket according to clause 14 characterized in that said handle means comprises a pair of gripping devices operable in closing and loosening conditions; and means for adjusting said angular displacement between the actuator and adjustment plates when the gripping devices are loosened in such a way that the angular displacement corresponds to the selected extended position of said covers.

16. Improvements in the mounting of the loader basket according to clause 15 characterized in that said adjustment means comprise a pair of arcuate grooves in said actuating bale cooperating with said gripping devices to define a range of positions of angular displacement between the plates actuator and adjustment to adjust the extended positions of said covers.

17 Improvements in the assembly of loader basket according to clause 13 characterized in that it also comprises manually operable handle mechanisms for: 1) fixedly attaching said actuator and adjustment plates for mutual rotation between first and second positions corresponding to the extended positions and retracted from the covers; and 2) uncoupling said actuator plates from said adjustment plate so that the adjustment plate can be rotated with respect to the actuator plate to determine the corresponding extended positions of the covers.

18. Improvements in the assembly of loader basket according to clause 13 characterized in that said covers are interconnected with said adjustment plate by means of links, each link being connected by a first end to a respective cover and by a second end to a third plate which rotates in conjunction with said adjustment plate.

19. Improvements in the assembly of loader basket according to clause 18 characterized in that the third plate and the adjustment plate are mounted on a rotating sleeve that can be manually rotated when said actuator and adjustment plates are decoupled.

20. Improvements in the mounting of the loader basket according to clause 13, characterized in that it also comprises a rod connected at one end to the plaque and at the other end to activation means for moving said rod between first and second positions of rod corresponding to the first and second positions of said actuator plate.

21. Improvements in the mounting of the magazine basket according to clause 20, characterized in that the covers are radially displaced between said extended and retracted positions when the rod moves between said first and second rod positions when the actuator and adjustment plates are joined.

22. Improvements in the assembly of the loader basket according to clause 21, characterized in that the activation means comprise a fluid piston cylinder. In compliance with the provisions of Article 47 of the Law on Inventions and Trademarks in force, I declare under oath that the above-described invention is the best known method for putting this invention into practice. In testimony of which, I sign the present in Cuernavaca, Morelos, on the 28th October 1994. NATIONAL FEEDSCRE & MACHINING INDUSTRIES, INC.