JPS6092835A - Transmission belt forming device - Google Patents

Abstract

PURPOSE:To deal with exactly of the change of cord kind, cord winding pitch and cord winding diameter etc. by a method wherein the movement of a cord supplying device is controlled by pulse being transmitted from a pulse transmitter with the synchronization to the revolution of a mandrel. CONSTITUTION:A pulse transmitter 13 transmits pulse signal to a divider 58 by the rotation of a mandrel 3, and divident ratio data signal is outputted from a data processor 50, and a pulse motor 32 is made to revolute and a winding head (a) is moved. The moving speed of the winding head (a) is coincided with the designated cord pitch. The revolution time of the mandrel 3 which is inputted to a said processor 50 is selected and outputted to a sequence circuit 51, and the revolution stopping order is outputted to a controller 56 when the setting time is finished.

Description

[Detailed Description of the Invention] In forming a power transmission belt, a cord serving as a strength member is precisely wound on a raw rubber sheet wrapped cylindrically around a mandrel at a pitch stipulated in the specifications of the power transmission belt. However, in conventional power transmission belt forming equipment, there is only one set of winding heads with touch pulleys.
The feeding of the winding head is driven by the mandrel drive shaft, chain, gears, etc., so when changing the type or type of belt, it is necessary to change the cord hook and replace the gear. Since power transmission belts are manufactured in small quantities with a wide variety of products, a large amount of labor is required, resulting in lower operating rates and an increase in work-in-progress.In addition, the circumference of the power transmission belt changes. Then, it is necessary to change the entire distance between the center of the mandrel and the center of the touch pulley, and each time the circumferential length is changed, it takes time to adjust the position, and there are problems such as oscillation due to the use of a cylinder with a large stroke.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a labor-saving power transmission belt forming device that can quickly and accurately respond to changes in cord type, cord winding pitch, cord winding diameter, etc. With the goal.

To this end, the present invention provides a mandrel that wraps a raw rubber sheet around the outer periphery and rotates around a shaft, and a cord supply that rolls into contact with the raw rubber sheet and supplies a cord onto the raw rubber sheet and wraps it. In a power transmission belt forming apparatus comprising a moving mechanism driven by a motor and moving the cord feeding machine in the axial direction of the mandrel, a pulse transmitter that emits pulses in conjunction with rotation of the mandrel; The present invention is characterized by comprising a control circuit that controls the movement of the code feeder based on the output of the pulse generator.

An embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a side view thereof, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1,
Figure 3 is a horizontal cross-sectional view taken along the line ■-m in Figure 1, Figure 4 is a cross-sectional view of the touch roller in Figure 2, showing the state in which it is all separated from the mandrel, and Figure 5 is the cord shown in Figure 1. FIG. 6 is a side view showing a second embodiment of the present invention, and FIG. 7 is a block diagram showing a control circuit of the code feeding mechanism in FIG. 6.

First, in Figures 1 to 4, 1 is a headstock housing, 2 is a tailstock housing, and 3 is a mandrel. The main shaft 9 is rotatably supported by a bearing 8 of the headstock housing 1 via a shaft 7 .

On the other hand, a pulse transmitter 13 is attached to the left end of the main shaft 9, and the right end of the mandrel 3 is pivotally connected to the tail stock housing 2.

Reference numeral 14 denotes a column that supports the rail 16 of the winding head support bracket 15, and its lower part is fixed to the head stock housing 1 with bolts 17.

It is fixed to the rail 16 with the upper bolt 18, and the upper right end of the rail 16 is fixed to the column 19 with a pole 20, and the column 1
The lower part of 9 is fixed to the floor with bolts 21.

A is a plurality of sets of winding heads, each of which is fixed to a winding head support bracket 15, and a touch pulley 22 is connected to a cord guide 24 and a bin 23 at the tip of each winding head a.
One end of the arm 25 is pivotally connected to the bracket 25a via a pin 26, and the other end is pivotally connected to the rond of an air cylinder 27 attached to the bracket 25a. Also, guide rollers 28 and 29 are pivotally attached to the winding head a, respectively.

As shown in FIG. 3, the winding head support bracket 15 has a nut 30 that is screwed onto a threaded rod 35,
It can be moved left and right by rotating a threaded rod 35 which is connected via a coupling ring 34 to a pulse motor 32 which is fixed with a bolt 33 to a bracket 31 which is fixed to the bracket 31 and which is pivotally supported at both ends by bearings 36. be.

At this time, as shown in FIG. 1, the winding head support bracket 15 is guided by the rail 16 by a cam follower 37, so that it can be accurately moved in the left and right direction.

Next, in FIG. 5, 50 is a data processing device 8 that performs data processing according to a program input in advance.
Bit central processing unit (hereinafter referred to as CPU), a full keyboard for inputting instruction data for instructing the forming order of the transmission belt, specification data of the transmission belt such as the specification number of the code to be used, pitch per turn, etc., and input data. Input the product number of the cathode ray tube display device (hereinafter referred to as CRT) for confirmation display, the full keyboard, the CRT interface for exchanging signals between the CRT and the CPU, and the cord for the power transmission belt supplied to each winding head a. A digital switch to store instruction data, and a read-only memory (hereinafter referred to as ROM) to store instruction data, etc.
051 consists of a storage circuit including a random access memory (hereinafter referred to as RAM), and an input/output interface 7 that exchanges signals between the CPU, sequence circuit, and drive device control unit. Made by belt molding - Sequence circuit section of an electric control device that controls each drive device and compressed air control device (not shown), 56 is a start and stop signal from the sequence circuit section 51 and speed command data from the data processing device 50 A thyristor Leonard type controller that controls the DC motor 4 that rotates the mandrel 3, 13 a pulse transmitter that sets the traverse speed of the winding head a according to the rotational speed of the DC motor 4 with cord winding, and 58 a cord winding pitch. 57, which selects the number of pulses emitted by the pulse transmitter 13 in accordance with the frequency division data output from the data processing device 50; 52 is a relay that selects the setting digital switch signal and the signal from the data processing device 50; 52 is a relay that selects the output signal of the branching device 58 and the output signal of the pulse generator 53 based on the output signal of the sequence circuit section 51; A digital switch for setting the amount of movement of the selected winding head a from the full standby position to the code winding start position, 53 a pulse transmitter for emitting pulses of the amount of movement set by the digital switch 54, 59 A pulse motor driver that sends and receives pulse train signals output from the relay 52 has a one-turn head at.
Controls the moving pulse motor 32.

55 is a switch for detecting the standby position of the winding head a, and in addition to 91 and above, there is also a manual/automatic changeover switch and a start/stop pushbutton switch.

An operating device including indicator lights etc. is attached.

In such a device, a plurality of cords 39 are serially connected in advance by a plurality of cord reels (not shown), and each winding head a (two sets are shown, but a plurality of cords 39 may be equipped depending on the specifications of the power transmission belt). ) is gripped by the touch pulley 22 via the guide roll 28.2'l (the cord gripping device and each winding head a is given a number unique to the cord 39 and 91 windings). A code number is input into the data processing device 50 by a code number setting device (not shown) corresponding to the number of the attached head a, and the forming order n of all power transmission belts formed by the power transmission belt forming device in a certain period, each The type of transmission belt, the code number used, and the cord winding pitch for each order are stored in the data processing device 50.

Here, the order of the molding codes from the data processing device 50 is:
By Kalanta Momery in the data processing device 50! lln
Signals are transmitted to each control unit in the order of the (n+1)th and the (n+1)th.

Next, when the preparation for winding the cord is complete, as shown in Figure 5,
A data request signal is sent from the sequence circuit section 51 to the data processing device 50, and the data processing device 50 selects all data for the next code to be wound from the stored data, performs necessary calculations, and then returns the data to the winding head for use. a number,
When a signal 1 of data such as the mandrel rotation speed 1 frequency division ratio is output, a signal indicating that the data signal has been output is sent to the sequence circuit section 51.

Then, the sequence circuit section 51Fi relay 52 is switched to select the winding head a, and the digital switch 54. Pulse transmitter 53. A signal is sent to the pulse motor driver 59 through the relay 52, and the pulse motor 32 is rotated in response to a command from the pulse motor driver 59, as shown in FIG.

A winding head a'ff in which a threaded rod 35 is rotated via a coupling 34, and a nut 30 screwed onto the threaded rod 35 and a winding head support bracket 15 are designated along the rail 16 in the axial direction of the mandrel. :Accordingly, the position of the standby detection switch 55 is moved to the cord winding start position.

Next, as shown in FIG. 2, compressed air is sent from the sequence circuit section 51 to the air cylinder 27 via the air hose 40 by operating a compressed air electromagnetic control valve (not shown), and the cylinder rod 42 is extended. , the arm 25 is pushed down, and the entire touch pulley 22 that grips the designated number code is pressed against the raw rubber sheet 38.

Now, in Figure 1, the left side of the winding head a is
The sequence circuit section 51 outputs all cord winding start signals to the DC motor controller 56, and outputs all the cord winding start signals to the DC motor controller 56.
6, the DC motor 4 is rotated, and the mandrel 3 on which the raw rubber sheet 38 is wound begins to fully rotate. When the mandrel 3 rotates, the pulse transmitter 13 at the left end of the main shaft 9 also rotates the pulleys 10, 11 . The belt 12 starts to rotate and sends a pulse signal to the frequency divider 58, and the 1 frequency divider 58 sends a pulse signal frequency-divided according to the division ratio data signal output from the data processing device 50 via the relay 57. relay 5
2 to the pulse motor driver 59, and then the pulse motor 32 is sent to the pulse motor 32 via the pulse motor driver 59.
, and start moving the winding head a in the same manner as described above.

Note that the frequency division ratio data output from the data processing device 50 is the pitch of the threaded rod 35 calculated by the following formula using stored data selected within the data processing device 50.

As a result, the moving speed of the head a with one winding naturally matches the specified code pitch.

At the end of the cord winding, the rotation time of the mandrel 3 corresponding to the winding weight of each type of transmission belt is input into the data processing device 50 in advance, so this is selected and output to the sequence circuit 51, and the set time is When the rotation is completed, the sequence circuit 51 issues a rotation stop command to the DC motor controller 56, and when the mandrel 30 stops rotating,
At the same time, since the pulse transmitter 13 also stops rotating, the pulse transmission stops, the pulse motor driver 59 and the pulse motor 32 also complete their operations, and the winding head a stops moving.

At this point, the data processing device 50 calculates the number of pulses transmitted from the pulse transmitter 13 corresponding to the required rotation amount of the mandrel 3 from the cord winding weight and cord pitch of each type number of the transmission belt, and It is also possible to add a counter that totals the number of emitted pulses, and to stop the DC motor 4 when the value of the counter reaches the above calculation result. In any case, when the DC motor 4 stops, As shown in FIG. 4, the sequence circuit section 51 completely passes the hose 41 through the air cylinder 2 by operating a compressed air solenoid valve (not shown).
7, and by pulling back the cylinder rod 42, the arm 25 is pulled up, and the touch pulley 22 is pulled away from the cow rubber sheet 38.

After that, the raw rubber sheet 3 is cut using a cord cutting device (not shown).
8 and the touch pulley 2z, the winding head a is in the state shown on the right side as shown in FIG. 1, and the cord end portion is gripped by a cord gripping device (not shown).

In this state, when the sequence circuit section 51 sends an end signal to the data processing device 50, the pulse generator 13,
A reverse rotation signal is sent to the pulse motor 32 via the relay 52 and the pulse motor driver 59, and the head a with the first winding moves to the left in the mandrel axis direction in the groove where the standby detection switch 55 is activated, and when the standby detection switch 55 is detected, One operation is completed.

At this time, the end signal from the sequence circuit unit 51 causes the counter memory n in the data processing device 50 to become n +
1, the preparation for the next cord winding is completed, and the forming order n is determined in response to the data request signal from the sequence circuit section 51.
+ Selecting the first data.

According to such a device, all code devices with different specifications are installed in a plurality of winding heads a, and all instruction data including the use code number of the power transmission belt according to the forming order is inputted in advance. , it is possible to automatically select the cord and wrap the cord around the raw rubber sheet at a predetermined winding speed, during winding, and at the winding pitch. No labor is required, which greatly improves production.

In addition, by moving the winding head a using a DC servo motor or the like, the above effects can be achieved.In addition, by using a pulse motor, an inexpensive and accurate winding pitch can be obtained, and a transmission with the same specifications can be achieved. When molding the belt roller for a relatively long period of time, it is also possible to omit the data processing device 50 and set the required setting data each time using a digital switch or the like.

Next, in the second embodiment shown in FIGS. 6 and 7, when the main shaft 106a of the mandrel is pivotally supported by the bearing 141,
I2, and a tacho generator (hereinafter referred to as TG) 143 for detecting the rotational speed of the main shaft 106a and a rotary encoder (hereinafter referred to as RG) 144 for detecting the amount of rotation are attached thereto.

On the other hand, the cord winding device 1.06e has a fixed frame 145
, a first movable base 146, a second movable base 150, etc., the first movable base 146 is assembled so as to be movable along the fixed frame 145 in parallel to the axis of the mandrel 105, and the first movable base ] / A traverse drive device 148 including a DC servo motor for rotating a threaded rod 147 that is screwed into a female screw (not shown) fixed to I6 is attached to the fixed frame 14.
5, a PG 149 is provided for detecting the amount of rotation of the threaded rod 147, that is, the position of the first movable table 146.

The second moving table 150 is mounted so as to be movable in the radial direction of the mandrel 105 along the first moving table 146.
A radial drive device 152 including a rotary motor with a brake for rotating a threaded rod 151 that is screwed into a female screw (not shown) provided on the first moving table 150 is fixed to the first moving table 146, and the threaded rod 151 is fixed to the first moving table 146. A PG 153 is provided for detecting the amount of rotation, that is, the position of the second movable table 150.

When you guide code 117, it is also mandrel 1.
Touch pulley 1 pressed against raw rubber sheet 116 on 05
Reference numeral 54 denotes a lever 15 which is pivotally connected to the second moving table 150 via a shaft 155 so as to be swingable in the radial direction of the mandrel 105.
6, and the tip of the air cylinder 157 is pivotally connected to the lever 156 via a pin (not shown).
A guide roller 158 for guiding the cord 117 is pivotally connected to the second movable table 150, and a first
, a limit switch for overstroke detection of the second movable bases 146, 150 is attached.

The part surrounded by a chain line 160 in FIG. 7 is a part of the drive unit, and 161 includes a comparison circuit for a device signal made up of the PG 153 and a device setting data signal made up of the data processing device 104. , radial drive device 15
Sequence circuit section 1271 for Bunryu motor with brake No. 2
A controller 162 controls the cord winding pitch by a signal from a frequency divider 162 that selects the cord winding pitch, that is, converts it according to the frequency division value outputted from the transmission pulse deposit data processing device 101 of the RG 144 for the mandrel 105.
3 is a pulse generator for setting the traverse speed of the guide roller 158 except when winding the cord; 164 is a p frequency divider according to the output signal of the sequence circuit section 124; the output signal of 62 and the output of the pulse generator 163; A relay 165 selects signals, a comparison circuit for the device setting data signal constituted by the data processing device 1o4 and the device data signal constituted by the PG149, and a comparison circuit for the device setting data signal constituted by the relay 167I and the speed output from the PG149. signal(
traverse drive device 1 according to the signal from the sequence circuit section 124.
Controller for controlling the DC servo motor for 48, 16
6 includes a drive circuit that fully drives the DC servo motor according to the output signal of the controller 165, and 167 includes a comparison circuit between the speed signal (voltage) output from the TG 143 and the speed setting data (voltage) output from the data processing device 104. This is a thyristor Leonard type controller that controls the DC motor for the mandrel drive device 142 according to signals from the sequence circuit section 124.

In such a device, the mandrel 105 is at position P2.
3, in the cord wrapping device 106, when the tail stock 106d starts moving to support the mandrel 105, the sequence circuit section 124 issues a data request signal to the CPU 126 via the input/output interface 138. .

At that time, the second counter memory of the storage device 135 is
If so, the CPU 126 selects the instruction data with the molding order number N from the instruction data stored in the storage device 135, and similarly selects all the specification data corresponding to the instruction data from the specification data, and selects the first order data. When the calculation is performed, the material number Qn of the use code 117 in the specification data is compared with the material number of the code 117 supplied to the code feeding device 107 for checking.

Mandrel rotation speed data X1=a1-bl・Lm radial position delta X==a+-b2・Lm traverse position data Xs” FL3+bs・W-2 signal data X4=a4・Qp where + al~a<11)+~ b is a value that is input in advance as machine data and can be determined from the following formula.

Lm* -Lm-・, Here.

k,: Coefficient determined by the specifications of the D/A converted TG 143, which is the output interface for mandrel rotational speed data, and the DC motor controller 167, Lm, l: Maximum circumference of the transmission belt that can be formed with this forming device , Lm+,: the minimum length of the transmission belt that can be formed by this forming device, nH: the maximum circumference Lm, the mandrel drive device 14
Optimum rotational speed of the motor for the mandrel drive device 142 when n-: the minimum circumference Lrrn, afi==2(Es-ls) i b2=4π,=touch pulley 154 PG when moving up and down by unit length
Number of pulse trains transmitted by 153, E□: Second moving table 1
18: Distance between the lower side position P22 (radial origin) of the second movable base 150 and the axis of the mandrel 105 when the second movable base 150 is in the standby position, 18: The lower side (position of the second movable base 150 during cord winding) Cord 117 wrapped around mandrel 105
Safety distance to avoid contact with the body, al ``” kg Sl 'A b3 ``'' kg 4
．． X3 ""k3Ssk, - the number of pulse trains transmitted by the PG 149 when the first movable table 146 moves a unit distance, S, = distance for extra winding at the beginning and end of the cord 11.7, Sl: code 117 When the 4-mandrel 105 rotates once in the distance between the winding start position NP2O and the winding end position P21, a 4"" ks / k4, RG'144
The CPU 126 transmits the above calculation results to each controller 1611.
Frequency divider 162. The controller 165゜167 and the material number comparison check result of the code 117 are output to the sequence circuit section 124 via the input/output interface 138, and if the material number comparison results do not match, all error indicator lights are lit and all cord winding starts. If not, and they match, cord winding begins as soon as the tail shaft 106C completes supporting the mandrel 105.

That is, first, the second moving table 150 moves forward in the radial direction, and the touch pulley 154 is pressed against the raw rubber sheet.
The tip of the cord 117 is pressed onto the raw rubber sheet 116, and at this time the touch pulley 154 is at position P2o.

When the cord crimping is completed, when the mandrel 105 rotates at a constant acceleration, the second movable table 150 corresponding to the rotation of the mandrel 105 starts traversing and starts winding the cord.

When the touch pulley 154 comes a predetermined distance before position P2□, the mandrel 105 is decelerated and moves to position P2□.
When the sequence circuit section 12 is reached, it stops and the sequence circuit section 12
4 is the CPU 126 via the input/output interface 138.
An end signal is output to the end signal, and the second counter memory is stored in accordance with this end signal.

Note that the winding head a of the first embodiment (touch pulley 154 of the second embodiment, shaft 155° lever 156, air cylinder 157
．． It is also possible to carry out the third embodiment in which a plurality of sets (consisting of guide rollers 158) are provided.C1 In short, according to the present invention, a mandrel around which a raw rubber sheet is wound and rotates around the shaft 9, a transmission device comprising: a cord feeding machine that rolls into contact with the mandrel to feed the cord onto the raw rubber sheet and wrap it; and a moving mechanism that is driven by a motor and moves the cord feeding machine in the axial direction of the mandrel. In the belt forming device, a pulse transmitter that emits pulses in conjunction with the rotation of the mandrel;
The present invention is industrially extremely useful because it provides a high-performance power transmission belt forming device that saves labor by providing a control circuit that controls the movement of the code feeder based on the output of the pulse transmitter. It is something.

[Brief explanation of drawings]

FIG. 1 is a side view showing a first embodiment of the present invention. Figure 2 is a sectional view taken along ll-Tl in Figure 1, Figure 3 is a horizontal sectional view taken along m-In in Figure 1, and Figure 4 shows the touch roller being pulled away from the mandrel in Figure 2. FIG. 5 is a block diagram showing the control circuit of the cord supply mechanism of FIG. 1, FIG. 6 is a side view showing the second embodiment of the present invention, and FIG. It is a block diagram showing the control circuit of the code supply mechanism in the figure. 1. Headstock housing + 2” Chi 40@
DC motor, 5, 6...Pulley, 7...Timing belt, 8...Bearing, 9...Main shaft, 13...Pulse transmitter,
14... Support column, 15... Winding head support bracket, 1
6...Rail, 17...Bolt, 18...Bolt, 19
...Strut, 20...Bolt, 21...Bolt, 22...
Touch pulley, 23...pin, 24...cord guide,
25... Arm, 25a... Bracket, 26... Pin, 27... Air cylinder, 28° 29-... Guide roller, 30... Nut, 31... Bracket, 32... Pulse motor, 33... Bolt, 34...Coupling, 3
5. Threaded rod, 36. Bearing, 37. Cam follower, 38. Raw rubber sheet, 39. Fist cord, 40
Hose, 41... Hose, 42... Cylinder rond, 50... Data processing device, 51... Sequence circuit section, 52... Relay, 53... Pulse transmitter, 54... Digital switch, 55... Switch, 56...control %, FN7...1j relay, 58...frequency divider, 59...
Pulse motor driver, 104...data processing device, 1
05... Mandrel, 106... Cord winding device, 10
6a...Main shaft, 106b...Headstock, 106c
...Tail axis. 106d... Teeth stock, 106e... Cord winding device, 116... Raw rubber sheet, 117... Cord, 12
3. Operating device. 124...Sequence circuit unit, 135...Storage device, 1
38: Input/output interface, 141: Bearing, 1426: Mandrel drive device, 143: Tacho generator (TG), 144: Rotary encoder (RG)
) , ]45... Fixed frame, 146... First moving base, 147... Threaded rod, 148... Traverse drive device, 149... PG, 150... Second moving base, 151...
・Threaded rod, 152...Radial drive device, 153...P
G, 154...touch pulley, 155...shaft, 156...
・Lever, 157... Air cylinder, 158... Guide roller, 160... Drive unit), 161...
Controller, 162... Frequency division 2i;, 1.63... Pulse transmitter, 1611... Relay, 165... Controller, 166... Drive circuit, 167... Controller, a... Winding head, Sub-agent Patent Attorney Masaru Tsukamoto Written Amendment to the Commissioner of the Japan Patent Office 1. Indication of the case: 1981 Patent Application No. 201109 2. Name of the invention: Power transmission belt forming device 3. Person making the amendment: Address of applicant related to the case. 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Name (62
0) Mitsubishi Heavy Industries, Ltd. 4, Sub-Agent Address: 5-3 Minamimotomachi, Shinjuku-ku, Tokyo, Odakyu Shinanomachi Mannyong, Room 207, Room 6, Contents of the Amendment Scope of Claims (Amendment) Wrapping an unvulcanized sheet around the outer periphery a mandrel that rotates around an axis; a cord feeder that rolls into contact with the unvulcanized sheet to supply and wrap the cord onto the unvulcanized sheet; and a cord feeder that is driven by a motor to supply the cord. A power transmission belt forming device is equipped with a movement mechanism that moves the machine in the axial direction of the mandrel, and includes a pulse transmitter that transmits pulses in conjunction with the rotation of the mandrel, and a cord feeding machine that is moved by the output of the pulse transmitter. A power transmission belt forming device characterized by comprising a control circuit for controlling. (1) Amend the claims as shown in the attached sheet. (2) Page 1, line 17, page 3, line 1, page 3 (2 locations), page 11, line 3, line 10, page 13, line 20, page 14, line 1 line, page 15, line 7, page 17, line 9,
No. 23, lines 13-14, page 24, line 15, page 24, line 1
Line 4, Line 16, Lines 16-17, Page 26, No. 14
"Raw rubber sheet" on page 27, line 6 is corrected to "1 unvulcanized sheet".

Claims (1)

[Claims] A mandrel that wraps around the outer circumference of the raw rubber sheet ladle and rotates around an axis, a cord feeder that rolls into contact with the raw rubber sheet to supply and wrap the cord onto the raw rubber sheet, and is driven by a motor. A power transmission belt forming apparatus equipped with a moving mechanism for moving the cord feeder in the axial direction of the mandrel includes a pulse transmitter that transmits pulses in conjunction with the rotation of the mandrel, and an output of the pulse transmitter. A power transmission belt forming device comprising a control circuit for controlling movement of a seacord feeder.