JP2718974B2 - Heat pressure welding equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating and press-contacting device that press-contacts end portions of a plurality of connected members while abutting and heating them.

(Prior art) In a conventional heating and pressure welding apparatus, a table is prepared in which about ten set values corresponding to the diameter value and the material name of the material to be connected are prepared. Each of the setting values is set by adjusting the scale or selecting a switch.

(Problems to be Solved by the Invention) However, setting a large number of set values by hand has a problem that it takes time and that errors are likely to occur. In addition, when the connected material not listed in the table was heated and pressed, the appropriate value was obtained by calculating with reference to the set value of the connected material described in the table. It took time. Further, even if the steps before and after the heating pressure welding are automated, the setting of the heating pressure welding is performed manually, which hinders full automation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heating and pressure-welding apparatus capable of automatically setting a set value corresponding to a diameter value and a material of a connected member.

(Means for Solving the Problems) In the invention according to claim 1, a plurality of connected members are clamped respectively, and ends of these connected members are abutted with each other.
In a heating press-contacting device that pressurizes and press-contacts these ends, an input unit that inputs a diameter value and a material name of the connected member, an electrode distance setting unit that sets an electrode distance for energizing, Pressure setting means for setting a clamping pressure and a pressing pressure on the connected material, voltage setting means for setting an energizing voltage for the connected material, and an annealing pattern setting means for setting an annealing pattern of the connected material after pressing. And, a distance detecting means for detecting the pressurization start distance and the energization end distance by the secondary pressure of the connected material due to the heating pressure welding,
A storage unit that stores each set value corresponding to the diameter value and the material name of the connected member, and outputs the set value in the storage unit corresponding to the input information of the input unit to each set unit,
Heating pressure control means for performing heating pressure welding based on the set value of the storage unit according to the detection result of the distance detection means, and performing annealing based on the annealing pattern after reaching the energization end distance. It is characterized by.

In the invention according to claim 2, the heating and pressing control means includes:
When a diameter value or a material name that is not stored in the storage unit is output from the input unit, an appropriate setting value is determined using the setting value of the diameter value and the material name stored in the storage unit. Features.

(Function) In the heating and pressing apparatus according to the first and second aspects of the present invention,
Enter the diameter value and material name of the connected material in the input means,
Each set value corresponding to the diameter value and the material name of the connected material is output from the heating pressure control means to the following setting means. Then, the electrode distance setting means sets the electrode distance for energizing, the pressure setting means sets the clamping pressure and the pressing pressure, the voltage setting means sets the energizing voltage, and the annealing pattern setting means sets the annealing pattern. Set. Further, the distance detecting means detects the moving distance of the connected member due to the heating pressure welding and outputs the distance to the heating pressure controlling means, so that the heating pressure controlling means performs the heating pressure welding according to the set value of the moving distance.

Further, in the heating pressure welding apparatus according to the second aspect of the invention, in the heating pressure welding control device, when a diameter value or a material name not stored in the storage unit is output from the input unit, the diameter value and the diameter stored in the storage unit are output. An appropriate set value is determined using the set value of the material name.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the heating and pressing apparatus according to the first aspect of the present invention.

The heating pressure welding device 10 includes an input unit 11, a heating pressure welding control unit 1,
2. It is basically composed of an electrode distance setting means 13, a pressure setting means 14, a voltage setting means 15, a distance detecting means 16, an annealing pattern setting means 17, and the like.

The input means 11 is an input device such as a keyboard or a card reader, and when a diameter value and a material name of a connected material are inputted, the input means 11 converts the diameter value and the material name into an electric signal and outputs it. In this example, a keyboard 19 is used.

The heating pressure welding control means 12 includes an input port 20, a CPU 21, a ROM 2
2, a microcomputer including a RAM 23, an output port 24, and the like. The storage unit 25 stores setting values corresponding to the diameter value and the material name of the material to be connected.
However, a magnetic storage medium or the like may be used.

The electrode distance setting means 13 includes the pulse motor driver circuit 2
6, consisting of a pulse motor 27, a stepping cylinder 28, etc.
Move 28 to set the distance between the electrodes that energize the connected material.

The pressure setting means 14 includes a D / A converter 29, a controller 30,
The hydraulic cylinder includes a proportional control valve 31 and the like.
Is moved by the controller 30 to set a predetermined pressure.

The voltage setting means 15 includes a D / A converter 32, a firing circuit 33, a variable voltage source 34 controlled by SCR, and the like.
A predetermined voltage is set by controlling the phase of R.

The distance detecting means 16 includes a pulse encoder 35, a counter circuit 36, and the like. The pulse encoder 35 generates pulses according to the moving distance, and the moving number can be detected by counting the number of pulses by the counter circuit 36.

The annealing pattern setting means 17 includes a temperature controller 37, a variable voltage source 38
Etc. The temperature controller 37 registers a large number of annealing patterns, and controls the variable voltage source 38 to heat the connected material while measuring the temperature of the connected material according to the selected annealing pattern. Note that the variable voltage source 38 of the voltage setting means 15 may be used as the variable voltage source 38.

Next, the operation of the heating and pressing apparatus shown in FIG. 1 will be described with reference to FIGS.

FIG. 2 is a flowchart for explaining the outline of the operation of the heating and pressing apparatus shown in FIG. 1, and FIG. 3 is a side view for explaining the outline of the operation of the heating and pressing apparatus shown in FIG.

When the diameter values and the material names of the connected members 50, 50 are input to the keyboard 19 (step 101), the CPU 21 sets the respective set values corresponding to the diameter values and the material names, that is, the clamp pressures PA and PB and the primary pressure P1. , Secondary pressure P2, electrode distance L0, pressurization start distance L1 by secondary pressure, energization end distance L2, voltage V, annealing pattern
The AN, the electrode distance L3 during annealing, and the like are read from the ROM 22 (step 102), stored in the RAM 23, and these data are output from the output port 24 as appropriate.

First, a data signal of the electrode distance L0 is output from the CPU 21 to the electrode distance setting means 13, and the chucks 51, 51 are positioned at the electrode distance L0 by the stepping cylinder. Then, a data signal of the clamp pressure PA of the left chuck 51 and the clamp pressure PB of the right chuck 51 is output from the CPU 21 to the pressure setting means 14, and the proportional control valve 31 of the hydraulic cylinder causes the clamp pressure PA, PB to connect the material to be connected. 50 and 50 are clamped (step 103). This state is shown in FIG.

Next, a data signal of the primary pressure P1 is output from the CPU 21 to the pressure setting means 14, and the connected members 50, 50 are pressurized at the primary pressure P1 in a pressing direction. Further, a data signal of the voltage V is output from the CPU 21 to the voltage setting means 15, and the connected members 50, 50
Is supplied with a voltage V by the variable voltage source 34 (step
104).

The energized connected members 50, 50 begin to be melted by the heat generated by the contact resistance, are pressurized by the primary pressure P1, contract, and start moving. This travel distance is always the pulse encoder
The distance is detected by the distance detecting means 16 between the counter 35 and the counter circuit 36, and is output to the CPU 21. In CPU21, distance detection means
It is determined whether or not the output from 16 has reached the pressurization start distance L1 by the secondary pressure stored in the RAM 23 (step 10).
Five). When the output from the distance detection means 16 reaches the pressurization start distance L1, the connected members 50, 50 are pressurized at the secondary pressure P2 (step 106). This state is shown in FIG.

The connected members 50, 50 continue to contract further at the secondary pressure, and burrs 52, 52 are generated. When the output from the distance detection means 16 reaches the energization end distance L2, the CPU 21 sends the voltage setting means 1
A data signal indicating that the energization has been completed is output to 5, and a data signal indicating that the clamp has been released is output to the pressure setting means 14 (steps 107 and 108). This state is shown in FIG.
The state after pressurization is shown in FIG.

Next, a data signal of the electrode distance L3 at the time of annealing is output from the CPU 21 to the electrode distance setting means 13, and the stepping cylinder
The chucks 51, 51 are positioned at the electrode distance L3 by 28, and the connected members 50, 50 are clamped again. And CP
The data signal of the annealing pattern AN is output from U21 to the annealing pattern setting means 17. The temperature controller 37 selects an annealing pattern AN from among many registered annealing patterns and performs heating (step 109).

In this way, the heating and pressure welding of the connected members 50, 50 is completed.

Therefore, in the heating press-connecting apparatus 10, each set value PA, PB, P1, P2, L0, L1, L2 corresponding to the diameter value and the material name is input simply by inputting the diameter value and the material name of the connected members 50, 50. , L3, V,
AN is automatically set, and the connected members 50 and 50 are heated and pressed.

Further, in the heating pressure welding apparatus according to the second aspect of the present invention, in the heating pressure welding apparatus according to the first aspect shown in FIG. 1, when a diameter value or a material name not stored in the storage unit 25 is output from the input means 11, The storage unit 25 stores a program for determining an appropriate set value using the set values of the diameter value and the material name stored in the storage unit 25.

FIG. 4 is a flowchart for explaining the outline of the operation of the heating and pressing apparatus according to the second aspect of the present invention. Only the parts different from the flowchart of FIG. 2 are shown.

As an example, a case where a diameter value that is not stored in the storage unit 25 is input is shown. However, a case where a material name that is not stored in the storage unit 25 is input is similarly processed using the composition ratio and the like.

When step 101 in FIG. 2 is executed, the input diameter value X
It is determined whether 0 is stored in the storage unit 25 (step 20).
1). If not in the storage unit 25, the set values Y1, Z1,... Corresponding to X1 and X1, which are smaller and closest to X0, are read from the storage unit 25 (step 202). Next, the set values Y2, Z corresponding to X2 and X2 that are larger and closest to X0.
Are read from the storage unit 25 (step 20).
3). Next, set values Y0, Z0,... Corresponding to X0 are determined by an arithmetic expression (step 204). Then, the process jumps to step 103.

The arithmetic expression shown in step 204 is a simple proportional distribution expression, and the set values Y0, Z0,
... may be requested.

Therefore, even if a diameter value or a material name that is not stored in the storage unit 25 is input, appropriate set values can be obtained instantaneously.

(Effects of the Invention) As described above, according to the heating and pressing devices of the first and second aspects of the present invention, the set values corresponding to the diameter value and the material name of the connected material can be automatically set. By shortening the time required for setting and reducing setting errors, shortening of manufacturing time and improvement of manufacturing yield can be realized.

Further, complete automation can be realized by automating steps before and after the heating and pressing.

Further, according to the heating and pressure welding apparatus of the second aspect of the present invention, an appropriate set value can be instantaneously determined even for a connected material for which a set value has not been determined.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the heating and pressing apparatus according to the first aspect of the present invention, FIG. 2 is a flowchart for explaining the outline of the operation of the heating and pressing apparatus shown in FIG. 1, and FIG. 4 is a side view for explaining the outline of the operation of the heating and pressing apparatus shown in FIG.
The figure is a flowchart for explaining the outline of the operation of the heating and pressing apparatus according to the second aspect of the present invention. 10 ... Heating pressure welding device 11 ... Input means 12 ... Heating pressure welding control means 13 ... Electrode distance setting means 14 ... Pressure setting means 15 ... Voltage setting means 16 ... Distance detecting means 17 ... Annealing pattern setting means 25 …… Storage unit

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-61582 (JP, A) JP-A-59-232677 (JP, A) JP-A-62-286688 (JP, A)

Claims (2)

(57) [Claims] 1. A method for clamping a plurality of connected members,
In a heating and pressure welding apparatus for abutting the ends of these connected members, applying current to these ends and applying pressure thereto, an input means for inputting a diameter value and a material name of the connected members; An electrode distance setting means for setting an electrode distance; a pressure setting means for setting a clamping pressure and a press contact pressure on the material to be connected; a voltage setting means for setting an energizing voltage to the material to be connected; Annealing pattern setting means for setting an annealing pattern of the material, distance detecting means for detecting a pressurization start distance and a power supply end distance by a secondary pressure of the connected material accompanying the heating and pressure welding, a diameter value of the connected material and A storage unit storing each set value corresponding to the material name; and a set value in the storage unit corresponding to the input information of the input unit, being output to each set unit. Heating pressure welding control means for performing heating pressure welding based on the set value of the storage unit according to the above, and performing annealing based on the annealing pattern after reaching the energization ending distance. . 2. The heating / pressure welding control means, when a diameter value or a material name not stored in the storage unit is output from the input means, sets the diameter value and the material name stored in the storage unit. The heating pressure welding apparatus according to claim 1, wherein an appropriate set value is determined by using (1).