JP4311619B2 - Bead automatic supply equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic bead supply facility for supplying beads to a tire molding apparatus.
[0002]
[Prior art]
When molding a tire, it is necessary to supply beads to the tire molding apparatus. A pair of beads are incorporated on both sides of the tire in the width direction. Moreover, the bead is provided with a filler, and when a pair of beads is incorporated, it is necessary to pay attention to the direction. That is, it is necessary to reverse the bead mounting posture of one bead by 180 ° with respect to the mounting posture of one bead. Therefore, when the bead is set in the tire molding apparatus, there is a possibility that the direction is mistaken according to the manual operation. Then, the following patent documents 1, 2, and 3 are known as devices for automatically supplying beads.
[0003]
Patent Document 1 has a pair of left and right bead setters, and includes a pair of left and right bead applicators for supplying beads to the bead setter on one side in the front-rear direction orthogonal to the left-right direction of the tire molding machine. Are provided so as to be independently movable in the front-rear and left-right directions. Also, a pair of right and left bead stockers are provided, and the beads and separators are stocked in a state of being alternately suspended in a vertical posture. The vertical posture means a posture in which the center axis of the ring-shaped bead or separator is horizontal. The bead applicator has a function of taking out a stock bead and delivering it to the bead setter. The separator is inserted between the beads and used to prevent the beads from coming into close contact with each other. The separator is taken out and collected by a dedicated spacer take-out device. A pair of left and right dedicated spacer take-out devices and collection places are also provided.
[0004]
In Patent Document 2, beads are stocked in a horizontal posture instead of a vertical posture. The same applies to Patent Document 3.
[Patent Document 1]
JP-A-6-316002 (Claims, paragraphs 0012 to 0021, FIG. 1)
[Patent Document 2]
Japanese Patent Laid-Open No. 2000-71351 (FIG. 1)
[Patent Document 3]
Japanese Patent Laid-Open No. 2002-11806 (FIG. 3)
[0005]
[Problems to be solved by the invention]
The prior art has the following problems. In Patent Documents 2 and 3, beads are stocked in a horizontal posture. On the other hand, when setting a bead to a tire molding device, a bead is performed in a vertical posture. Therefore, a mechanism for changing the bead stocked in the horizontal posture to the vertical posture is required. In order to simplify the configuration of the equipment, it is preferable not to provide such a mechanism for changing the posture.
[0006]
In Patent Document 1, beads are stocked in a vertical posture. However, a pair of bead applicators and bead stockers are arranged from the relationship of setting a pair of beads, and the equipment is enlarged. Further, beads are stocked with a separator (spacer) interposed between the beads, but a dedicated device for collecting the separator is provided, and a pair of left and right is also necessary. Therefore, facilities (installation area) are further increased in size, and many devices are required, resulting in high costs.
[0007]
This invention is made | formed in view of the said situation, The subject is providing the bead automatic supply equipment which can simplify a structure and can make an installation area small.
[Means for Solving the Problems]
In order to solve the above problems, an automatic bead supply facility according to the present invention is as follows.
A bead stock portion in which a large number of beads are interposed between the beads and the bead and the separator can be stocked in a vertical posture; and
The bead or separator at the beginning of the stock of the bead stock portion is taken out, and when the bead is taken out, it is moved to a temporary place and set in the temporary place in the vertical posture, and the separator is taken out. In the case, a bead take-out device having a function of moving the separator to the separator collection unit,
A first bead holding portion that holds beads to be set on both sides in the tire width direction in a first posture, and a second bead holding portion that holds the beads in a second posture reversed from the first posture by 180 ° A bead supply device provided with
A bead delivery device for receiving a bead placed at the temporary placement location and moving the bead to a delivery position for delivering the bead to the bead supply device;
This bead delivery device has an attitude switching mechanism, and is configured to bead delivery in either the first attitude or the second attitude.
[0008]
The operation and effect of the automatic bead supply facility with this configuration is as follows. First, beads are stocked in a state where a separator is interposed between beads in a bead stock portion. Beads and separators are ring-shaped and are stocked in a vertical position. Therefore, it is not necessary to change the bead posture when supplying the bead to the tire molding apparatus.
[0009]
The bead is taken out by a bead take-out device. The removed bead is temporarily placed in a temporary storage place. The bead is placed in a vertical position at this temporary storage location. Beads and separators are stocked alternately, and the separators must be removed. This separator is also taken out by the bead take-out device. The separator is collected in the separator collection unit. Thus, since both a bead and a separator can be taken out by the bead take-out device, there is no need for a dedicated device for taking out the separator.
[0010]
The bead delivery device receives the bead placed at the temporary placement location and delivers it to the bead supply device. The bead supply device can simultaneously hold a pair of beads assembled on both sides in the tire width direction. In other words, the first bead holding unit holds the bead in the first posture, and the second bead holding unit holds the bead in the second posture that is 180 ° reversed from the first posture. The bead delivery device includes an attitude switching mechanism, and can deliver a bead in either the first attitude or the second attitude when delivering the bead to the bead supply apparatus. Accordingly, the temporary placement place may be placed in either the first posture or the second posture. By providing the posture switching mechanism, it is not necessary to provide a pair of left and right bead delivery devices, bead take-out devices, and bead stock portions as in the prior art. As a result, an automatic bead supply facility that can simplify the configuration and reduce the installation area can be provided.
[0011]
As a preferred embodiment of the present invention, the bead take-out device comprises:
An identification sensor for identifying whether there is a bead or a separator at the stock leading position;
A bead take-out mechanism for taking out the bead at the head position;
A separator take-out mechanism for taking out the separator at the leading position;
Further, there may be provided a control unit that operates either the bead take-out mechanism or the separator take-out mechanism based on the detection result of the identification sensor.
[0012]
The bead take-out device includes a bead take-out mechanism and a separator take-out mechanism, and activates any take-out mechanism based on the detection result of the identification sensor. Thereby, while being able to move a bead to a temporary storage place reliably, a separator can be reliably collect | recovered by a separator collection | recovery part.
[0013]
As another preferred embodiment of the present invention, the bead take-out mechanism is taken out by pulling a bead with a magnet, and the separator take-out mechanism is taken out by pulling a separator with a vacuum suction device.
[0014]
The bead has a metal ring portion and can be attracted by a magnet. The separator can be pulled out by vacuum suction. Thereby, a bead and a separator can be taken out reliably.
[0015]
  In yet another preferred embodiment of the present invention, the bead stock portion is a suspension shaft for suspending and stocking beads and separators.With
The bead take-out device isA take-out mechanism vertical movement device for moving the bead take-out mechanism and the separator take-out mechanism up and down;
  After the bead or the separator is attracted by the take-out mechanism, the take-up mechanism can be lifted upward by the take-out mechanism vertical movement device.
[0016]
A suspension shaft is provided to stock the bead and separator vertically, and the bead and separator are suspended (hanging). After the bead or separator is attracted by the take-out mechanism, it needs to be taken out. However, if the bead or separator is moved in the attracted position, the bead or separator may be twisted with the suspension shaft and may not move well. Therefore, after being pulled by the take-out mechanism, it can be moved without touching the suspension shaft by lifting it once.
[0017]
As still another preferred embodiment of the present invention, the bead delivery device includes a gripping member for gripping a bead suspended from the temporary storage place from below,
A gripping member opening / closing mechanism that switches the gripping member between an open state and a closed state;
A gripping member driving section for moving the gripping member from the bottom to the top in order to perform a gripping operation of the bead;
A stopper that can be stopped in the middle of moving the gripping member from below according to the size of the suspended bead;
A gripping member control unit that switches the gripping member from an open state to a closed state with the gripping member stopped;
An example is a structure in which a bead is grasped by the grasping member and then lifted to a predetermined height by the grasping member driving unit.
[0018]
The action when grasping the bead suspended in the temporary storage place is as follows. First, the bead is grasped by the grasping member from the lower part and lifted up. The gripping member can be switched between an open state and a closed state, and when the bead is gripped, the gripping member is closed. Here, since there are various bead sizes, when the bead is suspended at the temporary storage place, the position of the lowest part of the bead is different. That is, the larger the size of the bead, the lower the position of the lowermost bead.
[0019]
Therefore, a stopper that operates according to the size of the bead is provided. The gripping member is moved upward from the lowest position, but the stopper acts at the position where the gripping operation is started, so that it can be gripped at an appropriate position corresponding to the size of the bead. I have to.
[0020]
As still another preferred embodiment of the present invention, the predetermined height at which the bead is lifted by the gripping member driving unit is set so that the bead center position is the same height regardless of the size of the bead. Things can be raised.
[0021]
Regardless of the size of the bead, the operation on the side of the bead supply device when the bead is supplied to the bead supply device can be simplified by lifting so that the center of the bead becomes the same. That is, when the bead size changes, it is not necessary to perform a change operation for adjusting the center position on the bead supply device side.
[0022]
As yet another preferred embodiment of the present invention, a plurality of the bead stock portions are provided so as to cope with a difference in bead size, and the plurality of bead stock portions are formed by the bead take-out device and the bead delivery device. The thing of the structure comprised so that delivery of the bead of arbitrary bead stock parts to a bead supply apparatus is mention | raise | lifted.
[0023]
According to this configuration, a plurality of bead stock portions are provided, and beads having different sizes can be stocked in each bead stock portion. The bead take-out device can take out a bead from any one of these bead stock parts and move it to a temporary storage location. The bead delivery device can deliver this bead to the bead supply device. In this way, when changing the size of the bead, it is only necessary to change the bead stock portion from which the bead is taken out.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of an automatic bead supply facility according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an automatic bead supply facility. When molding a pneumatic tire, there is a step of driving a bead. The beads have a role of fixing the tire to the rim, and are provided as a pair on both sides in the tire width direction. The bead has a shape in which a rubber filler is connected to a metal bead wire and has a ring shape.
[0025]
<Configuration of automatic bead supply equipment>
As shown in FIG. 1, four bead stock portions 1 are provided, and a large number of beads are stocked. In addition, how many bead stock parts 1 are provided can be set suitably. Four bead stock sections 1A to 1D can be stocked with beads of different sizes, and can be supplied with beads of different sizes simultaneously (sequentially). Therefore, it is possible to respond quickly to changes in tire size. The bead stock unit 1 is provided with two suspension shafts 10 on which beads are suspended. The beads are stocked in a state where they are stacked in order from the base side of the suspension shaft 10, but if they are stocked in a state where the beads are attached to each other, they will be in close contact with each other, making it difficult to take out. Stocked in the state of intervening. The separator is also formed in a ring shape like the bead. Since the separator is not necessary for tire molding, it is collected in the separator collection unit 2. The separator collection unit 2 has substantially the same structure as the bead stock unit 1 and includes two suspension shafts 11. The collected separators are stacked in order from the root side while being suspended on the suspension shaft 11. Naturally, the separator is reused.
[0026]
The bead take-out device 3 has a function of taking out beads and separators stocked in the bead stock unit 1. When the separator is taken out, the separator is moved to the separator collection unit 2 and collected. Further, when the bead is taken out, the bead is moved to a temporary placement recess 10 a (corresponding to a temporary placement location) provided at the tip of the suspension shaft 10. The bead take-out device 3 is configured to be movable along two guide rails 5 installed in parallel. The direction of the guide rail 5 and the axial direction of the suspension shafts 10 and 11 are orthogonal to each other. The suspension shaft 10 of the separator collection unit 2 is not provided with the temporary storage recess 10a because it is not necessary.
[0027]
Separator recovery part 2 and bead stock part 1 are juxtaposed along the direction of guide rail 5. Therefore, the bead separator removing operation by the bead removing device 3 and the separator collecting operation can be performed in the same manner. Thereby, a control mechanism can be simplified.
[0028]
The bead delivery device 4 has a function of receiving a bead suspended in the temporary placement recess 10 a and delivering it to the bead supply device 6. The bead transfer device 4 can also move along the guide rail 5. Therefore, any bead placed in any bead stock unit 1 can be received. The bead delivery device 4 can receive and hold only one bead. Further, it has a function of converting the bead posture by 180 ° (function of the posture switching mechanism) when the bead is supplied to the bead supply device 6.
[0029]
The bead supply device 6 can receive and hold a bead from the bead delivery device 4. Moreover, the two holding parts holding a bead are provided. Since two pairs are necessary on both sides in the tire width direction, two beads are held, and their postures are inverted by 180 °. The bead supply device 6 can move along the guide rail 7. The direction of the guide rail 7 is orthogonal to the guide rail 5. The bead supply device 6 has a function of supplying beads to a tire molding device (not shown). Hereinafter, the configuration of each apparatus will be described.
[0030]
<Composition of bead stock part>
First, the configuration of the bead stock unit 1 and the bead take-out device 3 will be described. FIG. 2 is a side view of the bead stock unit 1 and the bead take-out device 3. 3 is a front view of the bead stock unit 1 (a view taken along the line AA in FIG. 2). 4 is a front view of the bead take-out device 3 (a view taken along the line DD in FIG. 2). FIG. 5 is a plan view of the bead take-out device 3.
As shown in FIG. 2, the bead stock unit 1 is provided with two suspension shafts 10 (see also FIG. 4), and the base side is supported by the vertical frame 12. The suspension shaft 10 is fixed to the vertical frame 12 in a cantilevered form, and a temporary placement recess 10a is formed on the distal end side. Only one bead B can be temporarily placed in the temporary placement recess 10a. On the suspension shaft 10, beads B and separators S are alternately stacked in a vertical posture from the root side. Both the bead B and the separator S are in a state where the suspension shaft 10 is inserted in the ring of the ring, and this is expressed as a suspended state. Both the bead B and the separator S can be extracted from the front end side of the suspension shaft 10. As shown in FIG. 2, the bead B has an asymmetric shape when viewed from the circumferential direction, and is stocked in the first posture.
[0031]
<Configuration of bead take-out device>
Next, the configuration of the bead take-out device 3 will be described. As shown in FIG. 2, a fixed plate 30 in a vertical posture, and a first moving plate 31 and a second moving plate 32 in the same vertical posture are provided. The first moving plate 31 and the second moving plate 32 are coupled to each other via a plurality of support columns 33. Further, the first moving plate 31 is supported by the movable support column 34 so that it can move in the same direction as the axis of the suspension shaft 10 (arrow C). A compression coil spring 35 is set around the axis of the movable column 34, and the first and second moving plates 31, 32 are urged to the left in FIG. 2, but a stop ring 36 is provided. It is configured not to move more than a predetermined amount.
[0032]
Next, the separator take-out mechanism will be described. As shown in FIG. 4, six suction pads 37 are provided on the surface of the second moving plate 32, and the separator S can be sucked by a known vacuum suction device (not shown). The suction pads 37 are arranged uniformly (60 ° intervals) in the circumferential direction of the second moving plate 32.
[0033]
Next, the bead take-out mechanism will be described. As shown in FIG. 5, the first moving plate 31 has six magnets 38 (see also FIG. 4). The magnet 38 is preferably a permanent magnet, but an electromagnet may be used. As shown in FIG. 2, in the non-operating state, the magnet 38 is in a position retracted from the surface of the second moving plate 32. The magnet 38 can be driven by an air cylinder 39. The air cylinder 39 is attached to the first moving plate 31. When the air cylinder 39 is driven, the magnet 38 comes out on the surface of the second moving plate 32. Therefore, six holes corresponding to the shape of the magnet are formed in the second moving plate 32 so that the magnet 38 can protrude from the surface. Therefore, the beads can be adsorbed by the magnet 38.
[0034]
As shown in FIG. 4, the identification sensor 20 is provided on the surface of the second moving plate 32. The identification sensor 20 identifies whether there is a bead B or a separator S at the forefront of the stacked body that is suspended and stocked on the suspension shaft 10. The bead B has a filler and has a blackish color. Therefore, if the separator is formed of, for example, a white bright color, it can be detected by the difference in reflectance. That is, as the identification sensor 20, an optical sensor can be used to identify whether it is a bead or a separator based on the difference in intensity of reflected light. As another method, since the bead has a metal bead ring, the separator is formed of a resin, and the identification sensor 20 can be identified by whether or not it is a metal by a proximity switch. The place where the identification sensor 20 is placed is not limited to the place shown in FIG. 4 and can be placed in an appropriate place.
[0035]
Control means is provided, and based on the detection result by the identification sensor 20, either the suction pad 37 or the magnet 38 is put into an operating state. The control means may be provided in the bead take-out device 3 or may be provided in an appropriate place other than the bead take-out device 3.
[0036]
The support frame 22 is provided with a proximity switch 28 (see FIG. 2). This is to detect that the second moving plate 32 has moved in the direction of arrow C. For this purpose, a detection piece 31 a is attached to the lower part of the first moving plate 31. The proximity switch 28 detects that the detection piece 31a is approaching. When removing a bead or separator, the take-out mechanism is moved from the right to the left in FIG. 2, but the first bead or separator in the stack (the stack of beads and separators alternately, the same shall apply hereinafter) When the two moving plates 32 come into contact with each other, the second moving plate 32 is pushed and moved in the direction of arrow C, and this is detected. After this detection, one of the take-out mechanisms is operated.
[0037]
As shown in FIG. 2, the lower portion of the fixed plate 30 is supported by the support frame 22. Further, a cylinder device 21 (corresponding to a take-up mechanism vertical movement device) is provided, and a support frame 22 is connected to the piston rod. Therefore, the bead take-out mechanism and the separator take-out mechanism supported by the fixed plate 30 can move in the vertical direction. Usually, the take-out mechanism is at the lower position, and when taking out and moving the bead or the separator, the take-out mechanism is moved to the upper position. This is to prevent the beads and the separator from coming into contact with the suspension shaft 10 when the beads and the separator are moved along the axial direction of the suspension shaft 10. Thereby, a bead and a separator can be moved smoothly.
[0038]
As shown in FIG. 2, the cylinder device 21 is installed on a support base 25 installed horizontally. In addition, a servo motor 23 is also mounted on the support base 25, and the entire take-out mechanism can be moved along the guide rail 24. The guide rail 24 is along the axis of the suspension shaft 10 and is orthogonal to the guide rail 5. Further, another support base 26 is attached to the lower portion of the guide rail 24, and a guide mechanism for moving the support base 26 along the guide rail 5 is provided. A servo motor 27 is mounted on the support base 26, and the entire bead take-out device 3 can be moved along the guide rail 5.
[0039]
<Configuration of bead delivery device>
Next, the configuration of the bead delivery device 4 will be described. 6 is a side view of the bead delivery device, FIG. 7 is a plan view, and FIG. 8 is a front view.
[0040]
Four gripping members 40 are provided to receive beads suspended in the temporary placement recess 10a. The gripping member 40 is arranged to grip the bead from below. The gripping member 40 includes an opening / closing claw 40a that can be opened and closed. A gripping member opening / closing mechanism (not shown) (for example, a motor, a gear, a link mechanism, and a cam) can be used to switch between an open state and a closed state. Further, the gripping member 40 can move between the standby position and the action position, and the action position is indicated by a solid line in FIG.
[0041]
In order to move the gripping member 40 to the operating position, two cylinder devices 41 are provided, and the two gripping members 40 can be driven by one cylinder device 41. A link mechanism 42 is attached to the tip of the piston rod 41a of the cylinder device 41. The link mechanism 42 can swing around the swing axis 42a. In conjunction with the swinging operation of the link mechanism 42, the gripping member 40 can be swung around the swinging shaft core 42a. This swing operation can drive between the standby position and the action position. The cylinder device 41 and the link mechanism 42 are attached to a support plate 43 in a vertical posture.
[0042]
As shown in FIG. 6, in order to move the support plate 43 up and down, a cylinder device 44 (corresponding to a gripping member driving portion) is provided. A moving table 45 is attached to the piston rod of the cylinder device 44, and the moving table 45 is connected to the support plate 43. Before going to grip the bead, the grip member 40 is in the lowest position, and the state where the bead is lifted up is the highest state, as shown in FIG.
[0043]
Next, the stopper mechanism will be described. This stopper mechanism is provided to cope with the difference in bead size. Since the bead is suspended in the temporary placement recess 10a, the lowermost position of the bead decreases as the bead size increases. Therefore, when the bead is to be grasped from the lower side of the bead, it is necessary to appropriately perform the grasping operation (timing for switching the opening / closing claw 40a from the open state to the closed state) by the grasping member 40. That is, it is necessary to change the height at which the grasping member 40 performs the grasping operation according to the bead size.
[0044]
In the present embodiment, it is possible to cope with three different sizes of 17 ″ (inch), 16 ″, and 15 ″. As shown in FIG. 6, a stopper cylinder device 46 for 16 ″ and a stopper for 15 ″. A cylinder device 47 is provided. Each cylinder device 46, 47 is provided with a 16 "stopper 48 and a 15" stopper 49. The stoppers 48, 49 are arranged in the horizontal direction of FIG. 6, the stoppers 48 and 49 are retracted in the state shown in Fig. 6. When the stoppers 48 and 49 are driven, the stoppers 48 and 49 are driven in the right direction in Fig. 6 and on the movement trajectory when the movable table 45 moves up and down. For example, if the stopper 48 is driven, it comes into contact with the stopper 48 when the movable table 45 is raised. The claw 40a is switched from the open state to the closed state, whereby the bead can be properly grasped, and this switching control is performed by the grasping member control unit, which may be provided in the bead delivery device 4. However, it may be provided in another place.
[0045]
Although it is necessary to detect that the movable table 45 has come into contact with the stopper 48, this can be achieved by various methods. For example, the stopper 48 itself is configured to be rotatable around a predetermined axis. When the movable table 45 comes into contact with the stopper 48, the stopper 48 is rotated, and the switch is turned on in conjunction with this. As a result, it is possible to detect that the movable table has been raised to the position of the stopper 48. Or you may contact | abut to the stopper 48 and you may detect that the movable stand 45 cannot raise any more (for example, that load increased).
[0046]
After the bead is grasped by the grasping member 40, it is necessary to lift the bead further. FIG. 8 shows a lift completed state. In the bead lifting completed state, the bead center H is always set to the same height regardless of the bead size. By making the bead center H constant, it becomes easier to deliver the beads when the beads are delivered to the bead supply device 6 later.
[0047]
Although two stoppers 48 and 49 are provided, the number of stoppers set can be set to an appropriate number. Further, in this embodiment, when the largest size bead (17 inches) is grasped, the stopper is not operated and the bead grasping operation is performed in the state where the grasping member 40 is at the lowest position.
[0048]
The main part of the mechanism of the bead delivery device 4 is supported on the rotating plate 50. The rotating plate 50 is connected to a rotating cylinder device 51. These correspond to a posture switching mechanism. The axis of rotation is in the vertical direction. That is, the mechanism installed on the rotating plate 50 can rotate 180 ° around the rotation axis. As a result, the received bead is delivered to the bead supply device 6 in one of the positions as it is (first position) or the position reversed 180 ° (second position). As shown in FIG. 2, the beads are asymmetrical when viewed from the circumferential direction, and the beads are stocked in the bead stock portion 1 in the first posture.
[0049]
The rotating plate 50 and the rotating cylinder device 51 are supported by a horizontal support base 52. Further, a horizontal cylinder device 53 for moving the gripping member 40 and the like along the guide rail 54 is provided. A support base 52 is connected to the tip of the piston rod 53 a of the cylinder device 53. The direction of the guide rail 54 is the same direction as the suspension shaft 10 and is a direction orthogonal to the guide rail 5. A servo motor 55 is provided to move the entire bead delivery device 4 along the guide rail 5 (see FIG. 6).
[0050]
<Configuration of bead supply device>
Next, the configuration of the bead supply device 6 will be described. FIG. 9 is a front view of the bead supply device, and FIG. 10 is a plan view of the bead supply device. The bead supply device 6 has a function of receiving a bead from the bead delivery device 4 and supplying the bead to a tire molding device (not shown).
[0051]
The bead supply device 6 includes a first bead holding unit 60 that holds the bead in a first posture, and a second bead holding unit 61. The first bead holding unit 60 and the second bead holding unit 61 are structurally the same, but have a symmetrical structure in order to hold the pair of beads in a state where they are inverted by 180 °. Each bead holding portion 60, 61 includes four gripping members 62, and can move in the radial direction of the bead (arrow in FIG. 9). The gripping member 62 is formed with two convex portions 62a, and can hold the bead from the inner diameter side.
[0052]
A motor 63 for driving the gripping member 62 and a drive screw 64 connected to the motor shaft of the motor 63 are provided. A first slide member 65 and a second slide member 66 that are slidable along the screw shaft of the drive screw 64 are provided, and a female screw that engages with the drive screw 64 is cut. However, the first slide member 65 and the second slide member 66 move toward each other (arrow E) or away from each other (arrow F). Therefore, in the drive screw 64, the range in which the first slide member 65 slides and the range in which the second slide member 66 slides are opposite to each other. Therefore, the first bead holding unit 60 and the second bead holding unit 61 operate so as to simultaneously reduce and expand the diameter.
[0053]
The first and second slide members 65 and 66 and each gripping member 62 are connected by a link lever 67. Both end portions (connecting portions) of the link lever 67 are rotatably connected to the first and second slide members 65 and 66 and the gripping member 62.
[0054]
The gripping member 62 is guided in the radial direction by a guide rail 69 provided on a circular support plate 68 in a vertical posture. A support plate 70 for installing the motor 63 is also provided. The support plate 70 and the support plate 68 on the second bead holding portion 61 side are connected by eight connecting shafts 71.
[0055]
The bead supply device 6 is supported by a horizontal support frame 72 and can move along the guide rail 7. The guide rail 7 is supported by a vertical support frame. FIG. 9 shows a bead delivery device 4 and a bead B that is gripped by this device. When the bead is received, the four gripping members 62 are set in the reduced diameter state, and when the bead is held, the gripping member 62 may be set in the expanded diameter state. Further, when receiving a bead from the bead delivery device 4, the center of the bead coincides with the axis of the drive screw 64. That is, the center position of the bead is at the same height regardless of the bead size. Therefore, even when the bead size is changed, the height adjustment in the vertical direction may not be performed on the bead supply device 6 side.
[0056]
<Operation of automatic bead supply equipment>
Next, the operation of the automatic bead supply facility according to the present embodiment will be described using the flowcharts of FIGS.
[0057]
<Removing the bead separator>
First, taking out of the bead and the separator will be described with reference to FIG. First, the bead take-out device 3 is operated and moved to a predetermined bead stock unit 1 (# 1). Depending on the size of the bead to be taken out, it moves to one of the bead stock parts 1A to 1D. As shown in FIG. 2, the bead take-out device 3 is moved to the position of the bead stock unit 1. The servo motor 23 is driven to move the take-out mechanism along the guide rail 24. A suspended body in which beads B and separators S are alternately laminated is suspended on the suspension shaft 10.
[0058]
When the take-out mechanism is brought closer to the laminated body, the surface of the second moving plate 32 comes into contact with either the bead B or the separator S at the top of the laminated body (see FIG. 11). By this contact, the second moving plate 32 is pushed and the coil spring 35 is compressed. When the second moving plate 32 is pushed, this moves a little and the proximity switch 28 is turned on (# 2). Thereby, it is detected that the bead B or the separator S can be taken out.
[0059]
Next, it is detected whether the bead B or the separator S is at the top of the laminate (# 3). This can be detected by the identification sensor 20 based on the detection result. When it is determined that there is a bead B at the head, the cylinder device 39 is driven to pull out the bead B by the magnet 38. That is, the bead B is attracted by the magnet 38 (# 4). Next, the cylinder device 21 is driven to slightly lift the whole take-out mechanism. Thereby, the adsorbed bead B is also lifted up slightly (# 5). With the bead B lifted, the servomotor 23 is driven to move the guide rail 24 in the opposite direction. The raised bead B is temporarily placed in a temporary placement recess 10 a provided at the tip of the suspension shaft 10. When it is detected that the bead B has moved to the position of the temporary placement recess 10a (# 6), the cylinder device 21 is driven in the opposite direction to the previous position, and the entire take-out mechanism is returned to the original position. Lower (# 7). The detection of reaching the temporary placement recess 10a can be performed by, for example, an output signal of an encoder linked to a position detection sensor or a servo motor. Thereby, the bead B can be placed in the temporary placement recess 10a (# 8). When placing the bead B, the cylinder device 39 is driven to retract the magnet 38. Thereby, the adsorption state by the magnet 38 can be cancelled | released. The bead's posture when placing the bead is the vertical posture, which is the first posture. After the bead B is placed in the temporary placement recess 10a, it moves to an appropriate place and waits for the next operation so as not to interfere with the subsequent receiving operation by the bead delivery device 4 (# 12).
[0060]
In step # 3, when it is detected as a separator as a result of detection by the identification sensor 20, the suction pad 37 is activated. Thereby, the separator S is attracted. The bead take-out device 3 lifts the separator S as in the case of the bead (# 10). Thereafter, the separator S is brought to the separator collection unit 2 and collected (# 11). Thereafter, a standby state is entered (# 12).
[0061]
Since the beads and the separators are alternately stacked on the bead stock portion 1, the separators are taken out after the beads are taken out, and the beads are taken out after the separators are taken out. After the bead is temporarily placed in the recess 10a, the bead take-out device 3 cannot perform the next operation until the bead delivery device 4 takes it, but immediately after the separator is collected, the bead take-out operation is immediately started. be able to.
[0062]
<Delivery of beads>
Next, the bead delivery operation by the bead delivery device 4 will be described with reference to the flowchart of FIG.
[0063]
First, the bead delivery device 4 is operated and moved to the position of the temporary placement recess 10a (# 20, 21). This state is shown in FIG. As can be seen from this figure, the gripping member 40 is in the standby position. Next, it is determined whether the bead to be received needs to drive the stopper (# 22). If the bead size is 17 inches, it is not necessary to operate the stopper, and the process proceeds to step # 26.
[0064]
When the stopper needs to be driven, either the stopper 48 or the stopper 49 is operated according to the bead size (# 23). FIG. 14 shows a state in which the stopper 48 is activated.
[0065]
Next, when the cylinder device 41 is driven, the gripping member 40 swings around the swing axis 42a by the action of the link mechanism 42 and moves from the standby position to the action position. The gripping member 40 is in a position as shown in FIG. Next, the cylinder device 44 is driven to move the gripping member 40 upward (# 24). When the cylinder device 44 is driven, the movable table 45 is raised, and the gripping member 40 is also raised in conjunction with this. When the stopper 48 is in an activated state, the moving base 45 comes into contact with the stopper 48 (# 25).
[0066]
It is detected by an appropriate method that the movable table 45 has come into contact with the stopper 48, and based on this, the gripping member driving unit drives the gripping member 40 from the open state to the closed state (# 27). As a result, the gripping member 40 is in a state of gripping the bead. Subsequently, by retracting the stopper 48, the movable table 45 is raised until the maximum stroke of the cylinder device 44 is reached. Thereby, the raising of the gripping member 40 is completed (# 27). Note that the timing at which the gripping member 40 is swung and moved to the operating position may be performed when the stopper member 48 contacts the stopper 48.
[0067]
FIG. 8 shows a state where the lifting of the beads is completed. The bead B is raised to a predetermined height, but is raised so that the center H of the bead coincides regardless of the size of the bead. In FIG. 8, a small-sized bead B 'is indicated by an imaginary line, but the center H is the same.
Next, the bead B is lifted and moved to the delivery position (# 28). As shown in FIG. 1, the delivery position is the right end position of the guide rail 5, and the bead delivery device 4 and the bead supply device 6 face each other.
[0068]
Next, it is determined whether or not it is necessary to reverse the bead posture by 180 ° (# 29). The bead is supplied to the first bead holding unit 60 of the bead supply device 6 first, but in this case, it is necessary to transfer the bead in the second posture, so the bead posture needs to be reversed (# 30). When the bead is handed over to the second bead holding unit 61, the hand is handed over in the first posture without reversing the posture (# 31). Various changes can be made to the timing of reversing the bead.
[0069]
<Bead delivery operation>
Next, the procedure for delivering a bead will be described with reference to the flowchart of FIG. First, the bead supply device 6 is operated (# 40). The bead holding part is moved to the position of the bead (# 41). When receiving a bead in the first posture first, the first bead holding unit 60 is moved to the bead position. When the bead has already been received and held, the second bead holding portion 61 is moved to the bead position.
[0070]
Next, the gripping member 62 is driven (# 42). The gripping member 62 is in a diameter-reduced state, but is driven to be in a diameter-expanded state. Thereby, the inner diameter end surface of the bead B can be gripped by the convex portion 62a (# 43). In FIG. 8, the grip member in the reduced diameter state is indicated by 62 ′, and the gripped state is indicated by 62 ″. FIG. 9 also shows the gripped state.
[0071]
When the delivery of the bead is completed, the gripping member 40 is retracted on the bead delivery device 4 side. That is, the cylinder device 41 is driven to retract the gripping member 40 to a position outside the outer shape of the bead. Then, the bead supply device 6 moves to the original standby position (# 45). If two beads have already been held (# 46), the beads are supplied to the tire molding apparatus. Supply is performed at an appropriate timing.
[0072]
If only one bead is being held, the other bead is held by the second bead holding unit 61. The procedure in that case is repeated from step # 41. As shown in FIG. 13, since the gripping member 62 of the first and second bead holding portions 60 and 61 moves in the same manner, even if the bead B is already held by the first bead holding portion 60, the second bead In order to hold the bead in the holding portion 61, the holding member 62 is once reduced in diameter. Thereby, the holding state in the first bead holding unit 60 is once released. In this case as well, the bead is merely suspended from the first bead holding portion 60. Therefore, if the gripping member 62 is expanded again, the bead can be held.
[0073]
With respect to the bead delivery device 4, the first bead holding portion 60 is on the back side, and the second bead holding portion 61 is on the tip side. Therefore, the first bead holding part 60 on the back side is held first, and the second bead holding part 61 on the tip side is held later. Moreover, although the 1st bead holding | maintenance part 60 and the 2nd bead holding | maintenance part 61 are simultaneously driven by one drive source, the structure which each has a drive source may be sufficient.
[0074]
<Effect>
According to the bead automatic supply facility as described above, the installation area of the facility can be reduced. In order to handle a pair of beads, it is not necessary to provide two identical devices on the left and right. Since the bead take-out device can collect the separator, a dedicated device for collecting the separator is not necessary. Furthermore, even if the bead size changes, it can be easily handled. Also, the bead is always handled in the vertical position. Therefore, a device for changing the bead posture from the horizontal posture to the vertical posture may not be provided.
[0075]
Further, four (plural) bead stock portions 1A to 1D are provided, and beads having different sizes can be stocked in advance. The bead take-out device 3 and the bead delivery device 4 can move to the position of any bead stock portion 1A to 1D. Therefore, beads having different sizes can be supplied simultaneously (sequentially), and the work for changing the size becomes unnecessary.
[0076]
<Another embodiment>
In the present embodiment, either a bead or a separator is identified by an identification sensor, and either take-out mechanism is activated. Since the bead and the separator are always laminated alternately, if the bead or the separator that was taken out once is stored, it can be taken out without an identification sensor. Since it is not known whether the first take-out is a bead or a separator, for example, an operator may instruct it.
[Brief description of the drawings]
[Fig. 1] Plan view of automatic bead supply equipment
FIG. 2 is a side view of a bead stock unit and a bead take-out device.
FIG. 3 is a front view of the bead stock portion (a view taken along arrow AA in FIG. 2).
FIG. 4 is a front view of the bead take-out device (viewed along arrow DD in FIG. 2).
FIG. 5 is a plan view of a bead take-out device.
FIG. 6 is a side view of a bead delivery device.
FIG. 7 is a plan view of the bead delivery device.
FIG. 8 is a front view of the bead delivery device.
FIG. 9 is a front view of the bead supply device.
FIG. 10 is a plan view of a bead supply device.
FIG. 11 is a diagram for explaining the operation of the bead take-out device for taking out the bead;
FIG. 12 is a diagram illustrating a state where the gripping member is in a standby position in the bead delivery device.
FIG. 13 is a plan view showing that the gripping member of the bead supply device is in a reduced diameter state.
FIG. 14 is a diagram showing a state in which the stopper is activated.
FIG. 15 is a flowchart illustrating a procedure for removing a bead and a separator.
FIG. 16 is a flowchart for explaining a bead delivery operation by the bead delivery device;
FIG. 17 is a flowchart illustrating a procedure for delivering a bead.
[Explanation of symbols]
1 Beadstock Club
2 Separator recovery unit
3 Bead removal device
4 Bead delivery device
6 Bead feeder
10 Suspension shaft
20 Identification sensor
37 Suction pad
38 magnets
40 Grab member
40a Open / close claw
51 Cylinder device for rotation
60 1st bead holding part
61 Second bead holder
62 Gripping member
B Bead
S separator

Claims (7)

A bead stock portion in which a large number of beads are interposed between the beads and the bead and the separator can be stocked in a vertical posture; and
The bead or separator at the beginning of the stock of the bead stock portion is taken out, and when the bead is taken out, it is moved to a temporary place and set in the temporary place in the vertical posture and the separator is taken out. In this case, a bead take-out device having a function of moving the separator to the separator collection unit,
A first bead holding portion that holds beads to be set on both sides in the tire width direction in a first posture, and a second bead holding portion that holds the beads in a second posture that is 180 ° reversed from the first posture. A bead supply device provided with
A bead delivery device for receiving a bead placed in the temporary storage location and moving the bead to a delivery position for delivering the bead to the bead supply device;
This bead delivery device has an attitude switching mechanism, and is configured to deliver beads in either the first attitude or the second attitude. The bead take-out device is
An identification sensor for identifying whether there is a bead or a separator at the stock leading position;
A bead take-out mechanism for taking out the bead at the head position;
A separator take-out mechanism for taking out the separator at the leading position;
2. The automatic bead supply facility according to claim 1, further comprising a control unit that operates either the bead take-out mechanism or the separator take-out mechanism based on a detection result of the identification sensor.   3. The automatic bead supply apparatus according to claim 2, wherein the bead take-out mechanism is taken out by attracting a bead with a magnet, and the separator take-out mechanism is taken out by attracting a separator with a vacuum suction device. The bead stock unit is provided with a suspension shaft for stock by suspending the beads and the separator,
The bead take-out device includes a take-out mechanism vertical movement device that moves the bead take-out mechanism and the separator take-out mechanism up and down,
The bead automatic supply equipment according to claim 3, wherein the bead or the separator is attracted by the take-out mechanism, and the take-out mechanism is moved upward by the take-out mechanism vertical movement device. The bead delivery device includes a gripping member for grasping a bead suspended from the temporary storage place from below;
A gripping member opening / closing mechanism for switching the gripping member between an open state and a closed state;
A gripping member driving section for moving the gripping member from the bottom to the top in order to perform a gripping operation of the bead;
A stopper that can be stopped in the middle of moving the gripping member from below according to the size of the suspended bead;
A gripping member control unit that switches the gripping member from an open state to a closed state while the gripping member is stopped,
The bead automatic supply equipment according to any one of claims 1 to 4, wherein the bead is configured to be lifted to a predetermined height by the gripping member driving unit after the bead is gripped by the gripping member.   6. The bead according to claim 5, wherein the predetermined height at which the bead is lifted by the gripping member driving unit is set so that the bead center position is the same height regardless of the size of the bead. Automatic supply equipment.   A plurality of the bead stock parts are provided so as to be able to cope with a difference in bead size, and beads of any bead stock part among the plurality of bead stock parts are supplied by the bead take-out device and the bead delivery device. It is comprised so that delivery to an apparatus is possible, The bead automatic supply equipment of any one of Claims 1-6 characterized by the above-mentioned.

Images