FR2484886A1 - STORE FOR SPARE PARTS, IN PARTICULAR TOOLING STORE FOR MACHINE TOOLS - Google Patents

Abstract

A. STORE FOR SPARE PARTS, ESPECIALLY TOOLS STORE FOR MACHINE-TOOLS. B. SPARE PARTS STORE CHARACTERIZED IN THAT ONE OR MORE DEVICES 5, 6 ARE PROVIDED FOR TWISTING THE BELT STRAND, GOING THROUGH THE ISSUANCE POSITION AND OR THROUGH THE RECEPTION POSITION OF THE SPARE PARTS STORE, WITH A BELT TEETH 1 USED AS A STORAGE MEANS, IN THE ZONE OF MOVING IT, ONE OF THESE DEVICES BEING AVAILABLE, IN THE DIRECTION OF MOVEMENT OF THE BELT STRAND, UPSTREAM OF THE POSITION OF DELIVERY AND OR OF RECEPTION, OR IN THIS POSITION. C. THE INVENTION RELATING TO STORES CONTAINING AS A STORAGE MEANS, A CHAIN.

Description

The invention relates to magazines for spare parts, for example

  for manufactured parts or tools, which are kept available on request in the store, and which, when needed, are made available for delivery to a specific location in the store. Within such a store, the spare parts are supported by a moving storage means, for example a disk or a chain provided with receiving devices for the spare parts. Such stores are for example implemented on machine tools as tool stores, but

  they can also be used on towers as maga-

of manufactured parts.

  The invention relates to stores having as a means of shopping a cat. In general, the chain

  consists of metal parts interconnected by

  which either carry receiving devices for the tools or are themselves provided as receiving devices. All these store constructions have a significant disadvantage in that they involve a greater or lesser clearance between the individual receiving of tools. Precise positioning corresponding to the requirements of the receptions

  tooling in the exchange position of the store, requires in

  Sequence a relatively high expense for the realization of the storage medium, that is to say the chain or the organ

  similar, since this means of storage must be carried out

  and each tool receipt must be carried out

  rigid way to be able to carry out the exchange of tools by

  intermediate gripping devices without mechanical blocking

and without excessive wear.

  From this realization comes a relative weight

  of the storage medium, which results in

  of the training device. The speed of circulation of the storage medium is also influenced by its mass,

  It can not, therefore, be increased in the desired way.

  to the extent that an unaccom-

  plex and so expensive the store should be avoided. The high weight

  known stores is also manifested negatively

  such stores must be placed on

  bile of the machine, or when the store, fixed from another 2.-

24.8488 6

  way, must be transported at the same time as the mavlm n cumme fixed constituent part of it, which is for example the

  case for manufacturing modules.

  Another disadvantage of the construction of

  Known chains are the noise generated by the means of

  mobile waste and which is increasing with a rise in

  circulation speed of this storage medium. The weight and the

  noise mission can be reduced by using a belt. Such a use of a belt is evoked by the patent GB 1 249 631. The disadvantage of this aoLtIion is

  however, the relatively high training effort

  necessary for a rapid acceleration of the storage means, can not be transmitted without sliding of the pulley on the

  belt. Problems are also apparent in fixing

  the tooling receptions on the belt with regard to the unconstrained passage of bends during the circulation of the belt on the drive pulleys and

of referral.

  To house a high number of spare parts

  in a minimal space in the store, these rooms in most

  part of the store constructions are arranged parallel to the axis of the drive or return pulleys. Also for the purpose of optimal use of the available space, the stores are mostly arranged relative to the machine so that they use with it a minimal floor space. As a rule, the store is then place of

  in such a way that the tools are at right angles

  port to the spindle of the machine. For the exchange of tools between

  the tool shop and the spindle, a flip-flop device

  then it is necessary to move the tool from its inner position to the magazine in a position parallel to the

  spindle of the machine tool. Other solutions provide for a

  corresponding placement of the tool exchanger.

  In all cases, this significant mechanical complexity must be considered until now when the aforementioned advantages (maximum number of shopping places,

  favorable arrangement of the magazine with respect to the machine)

to be maintained

  The invention is directed towards obtaining the

  following results: Compared to chain stores and shops

  of the known chain type, the storage means must be simple

  folded, lighter, and less noisy. It must be possible to

  placed with a higher traffic speed and the expense for its realization must be reduced.

  The positioning defects of the magazine means

  swimming and the exchanger must be admissible within

  broader than hitherto, without altering the qualities of

  system. The expense for the eventual displacement

  necessary> spare parts> from the position

  internal to the magazine in the position necessary for

  the exchanger must be reduced.

  The spare parts store according to the invention

  It must have a storage medium with more degrees of freedom than the known cat store and must include devices for the use of these degrees of freedom. The invention uses as a storage medium, a toothed belt and provides on the store, to move the spare parts from the internal position in the intervention plan of the supply facility, one or more devices for twisting the strand of belt that passes through the positions of delivery and / or reception of the spare parts store. There is then provided at least one device for twisting the belt strand and this device is arranged in the direction of circulation of the belt strand upstream of the position of delivery and / or reception of the store or else

in this position.

  The invention is further characterized in that

  the toothed belt is provided with receiving devices

  elastic material for the spare parts to be stored, or supports of elastic material for the receiving devices.

  It is advantageous.

  whether the receiving devices or the supports for the receiving devices constitute with the belt

  toothed, a homogeneous unit with regard to the material.

  A device according to the invention for bending a strand of the toothed belt advantageously consists, on the one hand, of a deflection roller arranged rotatably on the D. -

  store and in the immediate vicinity of the belt strand

  vis-à-vis the toothed side of it, on the other hand, from

  minus one pair of clamping rollers. The belt strand en-

  drag is guided between the deflection roller and the pair of

  let's tighten. The pair of clamping rollers is disposed on the side of the deflection roller facing the belt strand in the peripheral zone of one of the two dials in contact with the belt strand, with its axis parallel to the axis of the idler roller. deviation, and at a distance from it corresponding to the sum of the radius of the deflection roller, the thickness of the toothed belt strand and the radius of the clamping roller. The axis of the deflection roller is located with respect to the axis of the driving pulley of the toothed belt in an angular range

ranging from 0 to 900.

  In case of need, a pair of clamping rollers is arranged at the periphery of each of the two dials.

contact with the belt strand.

  The invention will be explained by means of the examples

  following embodiments shown in the drawings below.

  joints. FIG. 1 is a partial schematic view of the spare parts magazine,

  FIG. 2 represents a section of a courtyard

  toothed belt with a receiving device for spare parts,

  FIG. 3 is an embodiment of the

  positive to twist the toothed belt.

  As shown in Figure 1, an endless toothed belt 1 is driven by a toothed pulley 2, mounted in a frame, not shown, and connected to a motor. The belt

  toothed 1 is further guided by one or more

  toothed pulleys, not shown. On the stretched strand of

  the toothed belt and on the face of this strand opposite the dentu-

  are receiving devices 4 for the hand-held

  detachable spare parts to store. These provisions

  They are made of an elastic material. In a realization

  particularly advantageous of the invention, these arrangements

  These are the material of the belt and form a homogeneous unit from the material point of view, with the belt 4.-

toothed 1.

  It can be seen in FIG. 2 that on the stretched strand of the toothed belt, webs 3 of elastic material may also be arranged, these webs carrying the receiving devices 4e for the spare parts. In an advantageous embodiment, the webs are constituted by the material of the belt and form therewith a homogeneous unit with respect to the material. The receiving devices 4, 41 can also be provided for a reception. parts to be stored parallel to the axis of rotation of the pulley 2 of the toothed belt, as shown in FIGS. 1 and 2, which

  for radial reception of spare parts (not shown).

  FIG. 3 schematically shows an embodiment of the device for twisting the toothed belt. For a better visibility, FIG. 3 has been shifted by 900 with respect to FIG. 1. The toothed belt 1 is guided between

  a deflection roller 5 and two pairs of clamping rollers 6.

  The deflection roller 5 can also be produced without a tooth. The pairs 6 of clamping rollers, of which only the rollers closest to the observer are visible in this figure, are respectively arranged on the periphery of one of the dials of the deflection roller 5 in contact with the belt strand. They

  can be arranged at various locations on this

  phérie. It can also be arranged a single pair of clamping rollers 6 in one of the two dials. The distance between

  axes of the clamping rollers 6 and the deflection roller 5s corres-

  to the sum of the two radii plus the thickness of the belt strand. The axis of the deflection roller is located in the case of this embodiment, at an angle of 900 relative to the axis of the drive pulley 20. When compared with FIGS. 1 and 2p, it should be noted that Figure 3 is

  offset from 900 with respect to FIG.

  This device for twisting the belt strand is provided in the delivery position and / or in the receiving position of the magazine. As shown in Figure 39, the strand of

  belt is twisted by its movement of 900

  positive, the torsion of the beginner belt upstream of the sitive device. Until the passage of the second pair of clamping rollers 6 the belt remains in the twisted position to return then

in the initial position.

  If the axis of the deflection roller 5 is at zero angle

  with the axis of the drive pulley, that is to say, is parallel

  when it passes through the device, then the belt strand is not twisted. Correspondingly to the angle between the position of the axes of the tools inside the magazine and the position of the axes of the tools in which they must be transmitted to the supply installation, the tax

  the deflection roller 5 is offset by the same value of

  relative to the axis of the drive pulley 2. This

  Angle value is between 0 and 900.

  According to the invention, a first device of this kind for twisting the belt strand can be arranged upstream of the delivery position and / or the magazine receiving position, and a second of these devices can be arranged downstream. from this position. It is enough then that each

  device comprises a single pair 6 of clamping rollers.

  In this description of the operation of the

  positive to twist the strand of belt, it was assumed at the beginning

  that this device is mounted on the store in a decent position

  end of the axis of the deflection roller 5 with respect to the

  Thus, when passing through the device and as explained above, the strand of

belt is constantly deflected.

  But it is also possible to set up the

  on the store in such a way that the axis of the roller

  viation 5 is parallel to the axis of the drive pulley 2.

  The belt strand is not deflected as it passes through the device. If, for delivery or receipt of a tool, it is necessary to place a tool receiver

  in the delivery position and / or in the receiving position

  store at a certain angle different from 0 with respect to

  to the axis of the drive pulley 2, the entire arrangement

  sitive can also be rotated around the fiber

  belt, in which case the belt strand is

  in the device, is also deflected. For this purpose, a driving element and a corresponding element of the guidance are however necessary. It follows therefore a greater technical complexity than in the case of the device arranged 6.- stationary, and accordingly, it appears as the most advantageous.

  It is also possible instead of the roller of

  5 and the pair 6 of clamping rollers, to provide a simple sliding guide for the belt strand which is deflected along the length of this guidance of the angle value whose axes of the parts must pivot relative to

at the internal position of the store.

  During its passage through this guidance, the strand

  belt is also deflected, this device presents all-

  time, relative to that comprising the deflection roller 5 and the pair of clamping rollers 6, the disadvantage that, due to the sliding friction, it is caused a wear of the

  belt, so that even compared to this relative device-

  Simply put, the device shown in Figure 3 is

  geous. Compared to known chain stores with metal members, the present invention offers the following advantages: The use of a toothed belt as a storage medium and the production of this belt in accordance with the invention results in a reducing the mass of the storage medium, thanks to which it is possible to obtain

  better optimization of speeds and to implement

  a smaller workout and lower energy expenditure for this workout. The reduced mass of the spare parts store also has a favorable influence on machines in which the whole of this store is carried and set in motion by a constituent group of the machine. In

  this case also, a reduced training and therefore an eco-

  More energy is now possible.

  Frequently also, stores are an integrated constituent part of a compact construction machine, for example in the case of a manufacturing cell. In this case, the reduced mass of the magazine has the effect of reducing the constraints for the transport of the machine,

  Other important advantages of the invention are

  flow from the solution according to the invention of the problem

  to bring the axes of the tools from their internal position to

  store in the position claimed by the supply installation.

  for example, the tool exchange facility.

  The use of a means of elastic storage,

  that is to say of the toothed belt, allows to combine the advantage

  a slip-free transmission of effort between the drive pulley and the toothed belt, with

  advantage of the elasticity of this belt, trans-

  towards his direction of training. The torsion

  to the invention of this belt around its neutral fiber.

  be possible with a reduced cost using a

  simple patient. The solution according to the invention thus also reduces the cost of the warehouse by means of a simple device for moving the spare parts from their internal position.

  to the store in the position claimed by the installation of appro-

  viewing. A very important advantage over chat-

  known metal warehouses, is the reduction of

  noise during the moving of the storage medium. The courtyard-

  Toothed tooth moves almost without noise. This creates better working conditions for staff serving

the machine.

  The realization of the storage means according to the invention is simple. Its operational safety is high

  given the small number of moving parts. Advances

  The steps are also derived from the arrangement of the spare parts to be stored in the receiving devices 4, 4 'having an elastic base structure. Spare parts are not

  not thus kept completely rigid in their posi-

  on the contrary, they are positioned as elastic

  to a certain extent. This elasticity allows the compensation of possible positioning tolerances and allows a simpler and therefore less expensive construction of the supply installation, for example of the gripping device of the tool and its guide elements,

Claims (4)

CAT 1 0 N S   1. = Spare parts store, especially store   machine tools = tools, with a belt, preferably   motorized, moving endlessly9 as a means of   a belt carrying receiving devices for detachably holding spare parts 9 with a position   to deliver and / or a position to receive these spare parts   positions in which the receiving devices are likely to be transported by the movement of the belt, and with an installation for moving the devices   the receipt of spare parts outside the shop plan.   in the plan of intervention of an installation of antimicrobial   a spare parts magazine characterized in that one or more devices (5; 6) are provided for twisting the belt strand, passing through the delivery position and / or the receiving position of the spare parts magazine, a toothed belt (1) used as a storage medium, in the movement zone thereof, one of these devices being arranged, in the direction of movement of the belt strand, upstream of the delivery position and / or reception, or well in this position.   2.- Spare part magazine according to the   cation 1, characterized in that the device for twisting the belt (1) comprises a deflection roller (5) and one or two pairs of clamping rollers (6), at least one pair of clamping rollers (6). being disposed on the belt-facing side of the deflection roller (5) in the circumferential zone of one of the two dials of the deflection roller (5) in contact with the belt strand, with its axis parallel to that of the deflection roller (5) and at a distance of. the latter corresponding to the sum of the radius of the deflection roller (5), the thickness of the toothed belt strand and the radius of the clamping roller (6) 9 the axis of the deflection roller (5) lying in relation to to the axis of the drive pulley (2) in an angular range from 0 to 90 o   3o = Spare parts warehouse according to the   1 or 2, characterized in that the toothed belt (1)   is provided with receiving devices (4; 4) of elastic material   or supports (3) made of elastic material for receiving devices (45 41). 10.-   4.- Spare parts warehouse according to the   3, characterized in that the receiving devices (4; 4 ') or the supports (3) consist of the material of the belt and together with the toothed belt (1) form a uniform unit with respect to the material .