JP5335463B2 - Ultrasonic metal bonding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic metal welder capable of efficiently manufacturing a joined metallic plate of superior quality, and to provide a joined metallic plate obtained using the welder. <P>SOLUTION: When a horn starts ultrasonic vibration, an output sensor continuously detects the output of the ultrasonic metal welder, and a detection signal is outputted to the controller of the ultrasonic metal welder (step S1). The controller, on the basis of the detection signal outputted from the output sensor, prepares the output waveform of the ultrasonic metal welder from the start of the ultrasonic vibration of the horn until a prescribed time elapses (step S2). Then, the controller determines from the output waveform whether or not the frequency of the temporary lowering of the output within a prescribed time is fewer than in the normal joining time (step S3) and, if the frequency is determined to be fewer than the normal joining time, the controller determines the joining of the metallic plate to be defective and stops the driving of the ultrasonic vibrator (step S4). <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

Present invention relates to an ultrasonic metal joining machine that is used to join two metal plates.

  Conventionally, in order to join two metal plates (for example, electrode terminals), for example, an ultrasonic metal bonding machine as described in Patent Document 1 is used.

  This ultrasonic metal bonding machine includes an anvil and a horn. In order to join two metal plates using this ultrasonic metal joining machine, an operator first places the two metal plates on the anvil in a state where they are stacked one above the other. Next, the operator drives the ultrasonic metal bonding machine, and the pressurizing device of the ultrasonic metal bonding machine presses the horn downward, thereby holding the two metal plates between the horn and the anvil.

  Further, in this state, the horn vibrates in the horizontal direction by driving the ultrasonic vibrator of the ultrasonic metal bonding machine, and the ultrasonic vibration is applied from the horn to the upper metal plate. Are slid left and right. As a result, impurities such as oxide films adhering to the contact surfaces of both metal plates are removed, and frictional heat is generated in the overlapping portion where both metal plates overlap. Due to this frictional heat, a sudden plastic flow is generated in the superposed part, so that the superposed part is joined to obtain a joined metal plate.

JP 2006-231402 A

  On the other hand, when the joining surface of the metal plate is soiled with oil or the like, the ultrasonic metal joining machine does not work well because both the metal plates slip. As a result, the bonding metal plate in this case has a bonding strength lower than that of a normal bonding metal plate, resulting in a defective product. However, in the conventional ultrasonic metal bonding machine, even when the bonded metal plate becomes a defective product as a result, it must be driven for a preset bonding time, so that a good bonded metal plate can be efficiently manufactured. could not.

This invention is made | formed in view of this conventional subject, and it aims at providing the ultrasonic metal joining machine which can manufacture a quality bonded metal plate efficiently.

In order to solve the above problem, the ultrasonic metal bonding machine according to claim 1 of the present invention continuously detects the driving force of the horn of the ultrasonic metal bonding machine from the start of the ultrasonic vibration of the horn. differences detecting means for outputting a detection signal, based on the detection signal output from the detection means, to create an output wave form until a predetermined time elapses, the state of the waveform of this is the state of the waveform of the normal joint In this case, it is characterized by comprising horn drive control means for judging that the joining of the two metal plates is defective and stopping the ultrasonic vibration of the horn.

Further, ultrasonic the ultrasonic metal bonding machine, before Symbol horn drive control means according to claim 1 of the present invention, temporarily output to the locus of the output that increases proportionally represented by the output waveform is reduced If less by normal bonding remote number, determines that the state of the output waveform is different from the state of the output waveform of the normal joint, it is characterized by stopping the ultrasonic vibration of the horn.

Further, the ultrasonic metal bonding machine according to the present invention is the ultrasonic metal bonding machine according to claim 1, wherein the horn drive control means has a temporary stagnation number of the subtraction amount indicated by the subtraction amount waveform. The state of the subsidence amount waveform is different from the state of the subsidence amount waveform during normal joining when the subsidence amount indicated by the subsidence amount waveform during normal joining is less than the number of temporary stagnations. Therefore, the ultrasonic vibration of the horn may be stopped .

Moreover, the ultrasonic metal bonding machine according to the present invention is the ultrasonic metal bonding machine according to claim 1, wherein the horn drive control means is configured such that the number of stepped portions indicated by the subtraction amount waveform is equal to that during normal bonding. When the number of steps shown in the subduction amount waveform is smaller, the state of the subtraction amount waveform is determined to be different from the state of the subduction amount waveform during normal joining, and the ultrasonic vibration of the horn is determined. May be stopped .

Further, the bonding metal plate of the present matter, the two metal plates, may be obtained by bonding using an ultrasonic metal bonding machine present invention.

  In the ultrasonic metal bonding machine of the present invention, the state of at least one of the output waveform and the subsidence amount waveform is different from the waveform state at the time of normal bonding until a predetermined time has elapsed since the start of ultrasonic vibration of the horn. In this case, the ultrasonic vibration of the horn is stopped by judging that the joining of the two metal plates is defective. Therefore, even if the joining surfaces of the two metal plates are soiled with oil or the like, the operator removes the two metal plates from the ultrasonic metal joining machine during the joining operation and moves to the next joining operation. Is possible. Therefore, the ultrasonic metal bonding machine of the present invention can efficiently manufacture a good bonded metal plate.

The bonding metal plate of the present matter. Thus obtained by bonding using an ultrasonic metal bonding machine present invention two metal plates becomes reliably good, higher than conventional bonding metal plate Quality can be ensured.

1 is a system diagram of an ultrasonic metal bonding machine showing a first embodiment of the present invention. FIG. It is a schematic diagram which shows the state of the metal plate by ultrasonic vibration in the embodiment. It is a schematic diagram which shows another state of the metal plate by ultrasonic vibration in the same embodiment. It is a flowchart which shows the stop control process of an ultrasonic vibration in the ultrasonic metal joining machine of the embodiment. It is a figure which shows the output waveform of an ultrasonic metal joining machine in the embodiment. It is a system diagram of an ultrasonic metal bonding machine showing a second embodiment of the present invention. It is a flowchart which shows the stop control process of an ultrasonic vibration in the ultrasonic metal joining machine of the embodiment. It is a figure which shows the sinking amount waveform of the upper metal in the same embodiment. It is a flowchart which shows the stop control process of an ultrasonic vibration in the 3rd Embodiment of this invention. It is a system diagram of the ultrasonic metal bonding machine which shows the 4th Embodiment of this invention. It is a flowchart which shows the stop control process of an ultrasonic vibration in the ultrasonic metal joining machine of the embodiment. It is a figure which shows the output waveform of an ultrasonic metal joining machine, and the metal subsidence amount waveform of an upper side in the embodiment. It is a flowchart which shows the stop control process of an ultrasonic vibration in the ultrasonic metal joining machine which shows the 4th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First embodiment:
FIG. 1 is a system diagram of an ultrasonic metal bonding machine 1 showing a first embodiment of the present invention. The ultrasonic metal bonding machine 1 is used for bonding two metal plates 10 and 11. As an example of the metal plate, the lower metal plate 10 may be brass plated with tin, and the upper metal plate 11 may be copper plated with nickel.

  The ultrasonic metal bonding machine 1 includes an anvil 2, a horn 3, an output sensor 4, an ultrasonic metal bonding machine controller 5, an ultrasonic vibrator and a pressure device (not shown). Yes. Since the anvil 2, the horn 3, the ultrasonic vibrator, and the pressure device are the same as those in the conventional art, the output sensor 4 and the ultrasonic metal bonding machine controller 5 will be described in the present embodiment.

  The output sensor 4 constitutes detection means of the present invention. The output sensor 4 is configured to detect the output of the ultrasonic metal bonding machine 1 and output a detection signal. Examples of the output detected by the output sensor 4 include the output (driving force) of the entire ultrasonic metal bonding machine 1, the output (driving force) of the horn 3 and the ultrasonic transducer, and the like.

  The ultrasonic metal bonding machine controller 5 constitutes the horn drive control means of the present invention, and is connected to the output sensor 4 and the like. The ultrasonic metal bonding machine controller 5 stores output waveforms during normal bonding according to various bonding conditions. And this ultrasonic metal bonding machine controller 5 is comprised so that various control, such as drive control of the horn 3, may be performed based on the various signals output from the output sensor 4 grade | etc.,.

  Next, a method of joining the metal plates 10 and 11 in the ultrasonic metal joining machine 1 configured as described above will be described. An operator places the metal plate 10 on the anvil 2, puts another metal plate 11 thereon, and pushes a start switch (not shown) of the ultrasonic metal bonding machine 1. Then, the pressurization device of the ultrasonic metal bonding machine 1 presses the horn 3 downward, and the horn 3 and the anvil 2 sandwich the two metal plates 10 and 11.

  Next, the ultrasonic transducer of the ultrasonic metal bonding machine 1 is driven. As a result, as shown in FIG. 2, the horn 3 is ultrasonically vibrated in the horizontal direction, and ultrasonic vibration is applied from the horn 3 to the upper metal plate 11.

  Initially, the upper metal plate 11 vibrates together with the vibration of the horn 3, and the lower metal plate 10 does not vibrate, and the two metal plates 10 and 11 are slid right and left. Then, impurities such as an oxide film adhering to the contact surfaces of both metal plates 10 and 11 are removed, and frictional heat is generated in the overlapping portions 12 of both metal plates 10 and 11. Due to this frictional heat, an abrupt plastic flow occurs in the overlapped portion 12, and both the metal plates 10 and 11 begin to join.

  When both the metal plates 10 and 11 start to be joined, the lower metal plate 10 also starts to vibrate as shown in FIG. The duration of this vibration is as short as 2 to 10 mS, for example. When this vibration is completed, as shown in FIG. 2, only the upper metal plate 11 returns to a vibrating state.

  Both the metal plates 10 and 11 maintain the state of FIG. 3 after repeating the state of FIG. 2 and the state of FIG. 3 about 5-7 times, for example. That is, the vibration state of both the metal plates 10 and 11 is maintained. This means that the joining of both the metal plates 10 and 11 is completed. The ultrasonic metal bonding machine 1 stops the ultrasonic vibration of the horn 3 when determining that the bonding of the metal plates 10 and 11 is completed.

  The ultrasonic metal bonding machine 1 also stops the ultrasonic vibration of the horn 3 even when the bonding surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat. The control process will be described below using the flowchart of FIG. This control process is performed using the output state of the ultrasonic metal bonding machine 1.

(Step S1)
First, when the horn 3 starts ultrasonic vibration, the output sensor 4 continuously detects the output of the ultrasonic metal bonding machine 1 (the driving force of the horn 3) and sends a detection signal to the ultrasonic metal bonding machine controller 5. Output.
(Step S2)
The ultrasonic metal bonding machine controller 5 creates an output waveform of the ultrasonic metal bonding machine 1 based on the detection signal output from the output sensor 4 until a predetermined time t elapses from the start of ultrasonic vibration of the horn 3. (See FIG. 5). The predetermined time t is determined in advance by a joining experiment of the metal plates 10 and 11 and is shorter than the time required for joining the metal plates 10 and 11. In addition, the predetermined time t varies depending on the type of metal plate and various conditions when the metal plate is joined.
(Step S3)
Next, the ultrasonic metal bonding machine controller 5 determines from the output waveform of FIG. 5 whether or not the number of times the output P temporarily decreases within a predetermined time t is less than that during normal bonding.
(Step S4)
Next, when the ultrasonic metal bonding machine controller 5 determines that the number of times that the output P is temporarily reduced as indicated by A within the predetermined time t as shown in FIG. (YES in step S3), it is determined that the state of the output waveform in FIG. 5 is different from the state of the output waveform at the time of normal joining. Thereby, the ultrasonic metal bonding machine controller 5 determines that the bonding of the metal plates 10 and 11 is defective, and stops driving the ultrasonic vibrator. Therefore, the ultrasonic vibration of the horn 3 is stopped at the point S in FIG. 5, and the control process is ended.
(Step S5 to Step S6)
If the ultrasonic metal bonding machine controller 5 determines that the number of times the output P temporarily decreases within the predetermined time t is the same as or greater than that during normal bonding (NO in step S3), the state of the output waveform Is the same as the state of the output waveform during normal bonding. Thereby, the ultrasonic metal bonding machine controller 5 determines that the bonding of the metal plates 10 and 11 is good, and continues to drive the ultrasonic vibration of the horn 3 until the bonding is completed. Then, when the joining of the metal plates 10 and 11 is completed, the ultrasonic metal bonding machine controller 5 stops the ultrasonic vibration of the horn 3 (step S4) and ends the control process.

  The reason why the metal plates 10 and 11 are poorly bonded when the number of times the output P temporarily decreases within the predetermined time t is smaller than that during normal bonding will be described below.

  The temporary decrease in the output P occurs when the metal plates 10 and 11 move from the state of FIG. 2 to the state of FIG. When the joint surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat, the metal plates 10 and 11 are normally joined (the joint surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat, etc. 2), the state of FIG. 2 takes longer than in normal joining.

  Therefore, the number of times that the metal plates 10 and 11 move from the state of FIG. 2 to the state of FIG. 3 within the predetermined time t is smaller than that during normal joining. From this, since the number of times the output P temporarily decreases is smaller than that during normal joining, it can be determined that the joining of the metal plates 10 and 11 is defective.

  As described above, in the ultrasonic metal bonding machine 1 of the present embodiment, even if the bonding surfaces 10a and 11a of the metal plates 10 and 11 are dirty with oil or the like, the ultrasonic vibration of the horn 3 is stopped during the bonding. I made it.

  Therefore, the operator can remove the metal plates 10 and 11 from the ultrasonic metal bonding machine 1 and move to the next bonding operation. Therefore, the ultrasonic metal bonding machine 1 according to the present embodiment can efficiently manufacture a good bonded metal plate 13 (see FIG. 3) in which a decrease in bonding strength is reliably suppressed. Therefore, this joining metal plate 13 can ensure higher quality than the conventional joining metal plate.

Second embodiment:
FIG. 6 is a system diagram of the ultrasonic metal bonding machine 101 showing the second embodiment of the present invention. In the ultrasonic metal bonding machine 101 of the present embodiment, the same reference numerals are given to the same parts as those of the ultrasonic metal bonding machine 1 of the first embodiment, and the ultrasonic metal of the first embodiment. A different part from the joining machine 1 is demonstrated.

  The ultrasonic metal bonding machine 101 includes an anvil 2, a horn 3, a displacement sensor 40, an ultrasonic metal bonding machine controller 50, an ultrasonic vibrator and a pressurizing device (not shown). .

  The displacement sensor 40 constitutes the detection means of the present invention. The displacement sensor 40 is configured to detect a sinking amount of the upper metal plate 11 and output a detection signal.

  The ultrasonic metal bonding machine controller 50 constitutes the horn drive control means of the present invention, and is connected to the displacement sensor 40 and the like. Further, the ultrasonic metal bonding machine controller 50 stores a subsidence amount waveform at the time of normal bonding according to various bonding conditions. The ultrasonic metal bonding machine controller 50 is configured to perform various controls such as drive control of the horn 3 based on various signals output from the displacement sensor 40 and the like.

  As described in the first embodiment, the ultrasonic metal bonding machine 101 configured as described above is used when the bonding of the metal plates 10 and 11 is completed, or when the bonding surfaces 10a of the metal plates 10 and 11 are When 11a is dirty with oil or the like, the ultrasonic vibration of the horn 3 is stopped. The control process will be described below with reference to the flowchart of FIG. This control process is performed by utilizing the sinking state of the upper metal plate 11.

(Step S101)
First, when the horn 3 starts ultrasonic vibration, the displacement sensor 40 continuously detects the sinking amount of the upper metal plate 11 and outputs a detection signal to the ultrasonic metal bonding machine controller 50.
(Step S102)
Next, based on the detection signal output from the displacement sensor 40, the ultrasonic metal bonding machine controller 50 generates a stepped subsidence amount waveform until a predetermined time t has elapsed from the start of ultrasonic vibration of the horn 3. Create (see FIG. 8). The predetermined time t is determined in advance by a joining experiment of the metal plates 10 and 11 and is shorter than the time required for joining the metal plates 10 and 11. In addition, the predetermined time t varies depending on the type of metal plate and various conditions when the metal plate is joined.
(Step S103)
Next, the ultrasonic metal bonding machine controller 50 determines from the subtraction amount waveform of FIG. 8 whether or not the number of times the subtraction amount D temporarily stagnates within a predetermined time t is less than that during normal bonding. .
(Step S104)
Next, when the ultrasonic metal bonding machine controller 50 determines that the number of times that the subsidence amount D is temporarily stagnant shown in B within a predetermined time t as shown in FIG. (YES in step S103), it is determined that the state of the subsidence amount waveform in FIG. 8 is different from the state of the subsidence amount waveform at the time of normal joining. Thereby, the ultrasonic metal bonding machine controller 50 determines that the bonding of the metal plates 10 and 11 is defective, and stops driving the ultrasonic vibrator. Accordingly, the ultrasonic vibration of the horn 3 is stopped at the point S in FIG. 8 and the control process is ended.
(Step S105 to Step S106)
In addition, when the ultrasonic metal bonding machine controller 50 determines that the number of times the sinking amount D temporarily stagnates within the predetermined time t is the same as or larger than that during normal bonding (NO in step S103), It is determined that the state of the subduction amount waveform is the same as the state of the subtraction amount waveform at the time of normal bonding. Thereby, the ultrasonic metal bonding machine controller 50 determines that the bonding of the metal plates 10 and 11 is good, and continues to drive the ultrasonic vibration of the horn 3 until the bonding is completed. Then, when the joining of the metal plates 10 and 11 is completed, the ultrasonic metal bonding machine controller 50 stops the ultrasonic vibration of the horn 3 (Step S104) and ends the control process.

  The reason why the metal plates 10 and 11 are poorly bonded when the number of times the sinking amount D temporarily stagnates within the predetermined time t is smaller than that during normal bonding will be described below.

  The temporary stagnation of the sinking amount D occurs when the metal plates 10 and 11 are moved from the state of FIG. 2 to the state of FIG. When the joining surfaces 10a and 11a of the metal plates 10 and 11 are dirty with oil or the like, the metal plates 10 and 11 slip more than during normal joining, so the state of FIG. 2 takes longer than during normal joining. Therefore, the number of times that the metal plates 10 and 11 move from the state of FIG. 2 to the state of FIG. 3 within the predetermined time t is smaller than that during normal joining. From this, the number of times the subsidence amount D temporarily stagnates is smaller than that during normal joining, so it can be determined that the joining of the metal plates 10 and 11 is poor.

  As described above, in the ultrasonic metal bonding machine 101 according to the present embodiment, the bonding surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat as in the ultrasonic metal bonding machine 1 according to the first embodiment. However, the ultrasonic vibration of the horn 3 was stopped during the joining.

  Therefore, the operator can remove the metal plates 10 and 11 from the ultrasonic metal bonding machine 101 and move to the next bonding operation. Therefore, the ultrasonic metal bonding machine 101 according to the present embodiment can efficiently manufacture a good bonded metal plate. Moreover, the joining metal plate in this case can ensure higher quality than the conventional joining metal plate, similarly to the joining metal plate 13 of the first embodiment.

Third embodiment:
As shown in FIG. 6, the ultrasonic metal bonding machine 201 (indicated in parentheses) of the present embodiment includes an anvil 2, a horn 3, a displacement sensor 40, and an ultrasonic metal bonding machine controller 51 (in parentheses). And an ultrasonic transducer and a pressurizing device (not shown).

  The ultrasonic metal bonding machine controller 51 constitutes the horn drive control means of the present invention, and is connected to the displacement sensor 40 and the like. Further, the ultrasonic metal bonding machine controller 51 stores a subsidence amount waveform at the time of normal bonding according to various bonding conditions. The ultrasonic metal bonding machine controller 51 is configured to perform various controls such as drive control of the horn 3 based on various signals output from the displacement sensor 40 and the like. Other parts are the same as those of the ultrasonic metal bonding machine 101 of the second embodiment.

  As described in the first embodiment, the ultrasonic metal bonding machine 201 configured as described above is used when the bonding of the metal plates 10 and 11 is completed, or when the bonding surfaces 10a of the metal plates 10 and 11 are used. When 11a is dirty with oil or the like, the ultrasonic vibration of the horn 3 is stopped. The control process will be described below with reference to the flowchart of FIG. This control process is performed by utilizing the sinking state of the upper metal plate 11.

(Steps S201 to S202)
In this process, the same processes as steps S101 to S102 in FIG. 7 are performed. As a result, the ultrasonic metal bonding machine controller 51 creates the stepped subtraction waveform shown in FIG.
(Step S203)
Next, the ultrasonic metal bonding machine controller 51 determines whether or not the number of steps in the predetermined time t is smaller than that during normal bonding from the subtraction amount waveform of FIG.
(Step S204)
Next, when the ultrasonic metal bonding machine controller 51 determines that the number of times of the state of the stepped portion indicated by C as shown in FIG. 8 is less than that during normal bonding as shown in FIG. (YES in step S203), it is determined that the state of the subsidence amount waveform in FIG. Thereby, the ultrasonic metal bonding machine controller 51 determines that the bonding of the metal plates 10 and 11 is defective, and stops driving the ultrasonic vibrator. Accordingly, the ultrasonic vibration of the horn 3 is stopped at the point S in FIG. 8 and the control process is ended.
(Step S205 to Step S206)
If the ultrasonic metal bonding machine controller 51 determines that the number of steps in the predetermined time t is the same as or larger than that during normal bonding (NO in step S203), the state of the sinking amount waveform is normal bonding. It is determined that it is the same as the state of the subduction amount waveform at the time. Thereby, the ultrasonic metal bonding machine controller 51 determines that the bonding of the metal plates 10 and 11 is good, and continues to drive the ultrasonic vibration of the horn 3 until the bonding is completed. Then, when the joining of the metal plates 10 and 11 is completed, the ultrasonic metal bonding machine controller 51 stops the ultrasonic vibration of the horn 3 (Step S204) and ends the control process.

  The reason why the metal plates 10 and 11 are poorly bonded when the stepped portion of the subtraction amount waveform is smaller than that during normal bonding will be described.

  As described in the first embodiment, when the metal plates 10 and 11 are joined, the metal plates 10 and 11 repeat the state of FIG. 2 and the state of FIG. 3, that is, the upper metal plate 11 sinks. Happens intermittently. Therefore, the subduction amount waveform is stepped.

  When the joint surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat, the metal plates 10 and 11 slip more than when normally joined (when the joint surfaces 10a and 11a are not soiled with oil and fat). In addition, the state of FIG. 2 takes longer than that during normal bonding.

  Therefore, the number of times that the metal plates 10 and 11 move from the state of FIG. 2 to the state of FIG. 3 is smaller than that during normal joining. From this, in the subsidence amount waveform in this case, it can be determined that the joining of the metal plates 10 and 11 is poor because the stepped portion is smaller than that during normal joining.

  As described above, in the ultrasonic metal bonding machine 201 according to the present embodiment, the bonding surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat as in the ultrasonic metal bonding machine 1 according to the first embodiment. However, the ultrasonic vibration of the horn 3 was stopped during the joining.

  Therefore, the operator can remove the metal plates 10 and 11 from the ultrasonic metal bonding machine 201 and move to the next bonding operation. Therefore, the ultrasonic metal bonding machine 201 of the present embodiment can efficiently manufacture a good bonded metal plate. Moreover, the joining metal plate in this case can ensure higher quality than the conventional joining metal plate, similarly to the joining metal plate 13 of the first embodiment.

Fourth embodiment:
FIG. 10 is a system diagram of an ultrasonic metal bonding machine 301 showing a fourth embodiment of the present invention. The ultrasonic metal bonding machine 301 includes an anvil 2, a horn 3, an output sensor 4, a displacement sensor 40, an ultrasonic metal bonding machine controller 52, an ultrasonic vibrator, and a pressure device (not shown). And.

  The ultrasonic metal bonding machine controller 52 constitutes the horn drive control means of the present invention, and is connected to the output sensor 4, the displacement amount sensor 40, and the like. Further, the ultrasonic metal bonding machine controller 52 stores an output waveform and a sinking amount waveform during normal bonding according to various bonding conditions. The ultrasonic metal bonding machine controller 52 is configured to perform various controls such as drive control of the horn 3 based on various signals output from the output sensor 4 and the displacement sensor 40. The other parts are as described in the first embodiment and the second embodiment.

  As described in the first embodiment, the ultrasonic metal bonding machine 301 configured as described above is used when the joining of the metal plates 10 and 11 is completed, or when the joining surfaces 10a of the metal plates 10 and 11 are used. When 11a is dirty with oil or the like, the ultrasonic vibration of the horn 3 is stopped. The control process will be described below with reference to the flowchart of FIG. This control process is performed using the output state of the ultrasonic metal bonding machine 301 and the submerged state of the upper metal plate 11.

(Step S301)
First, when the horn 3 starts ultrasonic vibration, the output sensor 4 continuously detects the output of the ultrasonic metal bonding machine 301 and outputs a detection signal to the ultrasonic metal bonding machine controller 52. At the same time, the displacement sensor 40 continuously detects the sinking amount of the upper metal plate 11 and outputs a detection signal to the ultrasonic metal bonding machine controller 52.
(Step S302)
Next, based on the detection signal output from the displacement sensor 40, the ultrasonic metal bonding machine controller 52 generates a stepped subsidence amount waveform from the start of ultrasonic vibration of the horn 3 until a predetermined time t has elapsed. Create (see FIG. 12). At the same time, the ultrasonic metal bonding machine controller 52 outputs the output of the ultrasonic metal bonding machine 301 until a predetermined time t elapses from the start of ultrasonic vibration of the horn 3 based on the detection signal output from the output sensor 4. A waveform is created (see FIG. 12).
(Step S303)
Next, the ultrasonic metal bonding machine controller 52 determines from the output waveform of FIG. 12 whether or not the number of times the output P temporarily decreases within the predetermined time t is less than that during normal bonding. At the same time, the ultrasonic metal bonding machine controller 52 determines whether or not the number of times the sinking amount D temporarily stagnates within a predetermined time t is smaller than that during normal bonding from the sinking amount waveform of FIG.
(Step S304)
Next, the ultrasonic metal bonding machine controller 52 determines that the number of times that the output P is temporarily reduced as indicated by A within the predetermined time t as shown in FIG. 12 is less than that during normal bonding, or When it is determined that the number of times the amount of sinking D is temporarily stagnant as indicated by B within the predetermined time t as shown in FIG. 12 is smaller than that during normal joining (YES in step S303), the output of FIG. It is determined that the waveform state or the subsidence amount waveform state is different from the normal bonding state. Thereby, the ultrasonic metal bonding machine controller 52 determines that the bonding of the metal plates 10 and 11 is defective, and stops driving the ultrasonic vibrator. Therefore, the ultrasonic vibration of the horn 3 is stopped at the point S in FIG. 12, and the control process is ended.
(Step S305 to Step S306)
In addition, the number of times that the output P temporarily decreases within the predetermined time t, and the number of times that the sinking amount D temporarily stagnates within the predetermined time t are the number of times during normal bonding. If it is determined that they are the same or more (NO in step S303), it is determined that the state of the output waveform or the state of the subsidence amount waveform is the same as the state at the time of normal joining.

  Accordingly, the ultrasonic metal bonding machine controller 52 determines that the bonding of the metal plates 10 and 11 is good, and continues to drive the ultrasonic vibration of the horn 3 until the bonding is completed. Then, when the joining of the metal plates 10 and 11 is completed, the ultrasonic metal bonding machine controller 52 stops the ultrasonic vibration of the horn 3 (step S304) and ends the control process.

  In addition, when the frequency | count that the output P falls temporarily within the predetermined time t or the frequency | count that the amount D of stagnation temporarily stagnates is smaller than the time of normal joining, joining of the metal plates 10 and 11 becomes defective. The reason is as described in the first embodiment and the second embodiment.

  As described above, in the ultrasonic metal bonding machine 301 according to the present embodiment, the bonding surfaces 10a and 11a of the metal plates 10 and 11 are soiled with oil and fat as in the ultrasonic metal bonding machine 1 according to the first embodiment. However, the ultrasonic vibration of the horn 3 was stopped during the joining.

  Therefore, the operator can remove the metal plates 10 and 11 from the ultrasonic metal bonding machine 301 and move to the next bonding operation.

  Furthermore, in the ultrasonic metal bonding machine 301 according to the present embodiment, the output state of the ultrasonic metal bonding machine 301 and the submerged state of the upper metal plate 11 are used as judgment conditions for the bonding failure of the metal plates 10 and 11. did. Therefore, since the ultrasonic metal bonding machine 301 according to the present embodiment has more determination conditions for bonding defects than the ultrasonic metal bonding machines according to the first to third embodiments, Judgment becomes accurate. For this reason, the possibility of producing a defective product is greatly reduced.

  Therefore, the ultrasonic metal bonding machine 301 according to the present embodiment is capable of producing a non-defective bonding metal plate more efficiently than the ultrasonic metal bonding machines according to the first to third embodiments. Can do. Accordingly, the bonded metal plate in this case can ensure higher quality than the bonded metal plate manufactured by the ultrasonic metal bonding machine according to the first to third embodiments.

Fifth embodiment:
As shown in FIG. 10, an ultrasonic metal bonding machine 401 (indicated by parentheses) of the present embodiment includes an anvil 2, a horn 3, an output sensor 4, a displacement sensor 40, and an ultrasonic metal bonding machine. A controller 53 (shown in parentheses), an ultrasonic transducer and a pressurizing device (not shown) are provided.

  The ultrasonic metal bonding machine controller 53 constitutes the horn drive control means of the present invention, and is connected to the output sensor 4, the displacement amount sensor 40, and the like. The ultrasonic metal bonding machine controller 53 stores an output waveform and a sinking amount waveform at the time of normal bonding according to various bonding conditions. The ultrasonic metal bonding machine controller 53 is configured to perform various controls such as drive control of the horn 3 based on various signals output from the output sensor 4 and the displacement sensor 40. The other parts are as described in the first embodiment and the second embodiment.

  As described in the first embodiment, the ultrasonic metal bonding machine 401 configured as described above is used when the bonding of the metal plates 10 and 11 is completed, or when the bonding surfaces 10a of the metal plates 10 and 11 are used. When 11a is dirty with oil or the like, the ultrasonic vibration of the horn 3 is stopped. The control process will be described below with reference to the flowchart of FIG. This control process is performed using the output state of the ultrasonic metal bonding machine 401 and the submerged state of the upper metal plate 11.

(Step S401 to Step S402)
In this process, the same processes as steps S301 to S302 in FIG. 11 are performed. That is, the ultrasonic metal bonding machine controller 53 creates the output waveform of the ultrasonic metal bonding machine 401 and the subsidence amount waveform of the upper metal 11 shown in FIG.
(Step S403)
Next, the ultrasonic metal bonding machine controller 53 determines from the output waveform of FIG. 12 whether or not the number of times the output P temporarily decreases within a predetermined time t is smaller than that during normal bonding. At the same time, the ultrasonic metal bonding machine controller 53 determines whether or not the number of steps in the predetermined time t is smaller than that during normal bonding from the subtraction amount waveform of FIG.
(Step S404)
Next, when the ultrasonic metal bonding machine controller 53 determines that the number of times the output P is temporarily reduced as indicated by A within the predetermined time t as shown in FIG. 12 is less than that during normal bonding, or When it is determined that the number of times of the state of the stepped portion indicated by C within the predetermined time t as shown in FIG. 12 is smaller than that during normal joining (YES in step S403), the output waveform of FIG. It is determined that the state or the state of the subsidence amount waveform is different from the state at the time of normal joining. Thereby, the ultrasonic metal bonding machine controller 53 determines that the bonding of the metal plates 10 and 11 is defective, and stops driving the ultrasonic vibrator. Therefore, the ultrasonic vibration of the horn 3 is stopped at the point S in FIG. 12, and the control process is ended.
(Step S405 to Step S406)
Further, the ultrasonic metal bonding machine controller 53 determines that the number of times the output P temporarily decreases within a predetermined time t, or the number of stepped portions of the subsidence amount waveform within the predetermined time t is the same as or greater than that during normal bonding. If it is determined (NO in step S403), it is determined that the state of the output waveform or the state of the subsidence amount waveform is the same as the state at the time of normal joining.

  Accordingly, the ultrasonic metal bonding machine controller 53 determines that the bonding of the metal plates 10 and 11 is good, and continues to drive the ultrasonic vibration of the horn 3 until the bonding is completed. Then, when the joining of the metal plates 10 and 11 is completed, the ultrasonic metal bonding machine controller 53 stops the ultrasonic vibration of the horn 3 (step S404) and ends the control process.

  The reason why the metal plates 10 and 11 are poorly bonded when the number of times the output P temporarily falls within the predetermined time t or when the number of stepped portions C of the subtraction amount waveform is smaller than that during normal bonding. These are as described in the first embodiment and the third embodiment.

  As described above, in the ultrasonic metal bonding machine 401 according to the present embodiment, the bonding surfaces 10a and 11a of the metal plates 10 and 11 are contaminated with oil or the like, as in the ultrasonic metal bonding machine 1 according to the first embodiment. However, the ultrasonic vibration of the horn 3 was stopped during the joining.

  Therefore, the operator can remove the metal plates 10 and 11 from the ultrasonic metal bonding machine 401 and move to the next bonding operation.

  Furthermore, the ultrasonic metal bonding machine 401 according to the present embodiment is similar to the ultrasonic metal bonding machine 301 according to the fourth embodiment in that an ultrasonic metal bonding machine is used as a judgment condition for the completion of the bonding of the metal plates 10 and 11. The output state 401 and the submerged state of the upper metal plate 11 were used. Therefore, compared with the ultrasonic metal bonding machine of the first embodiment to the third embodiment, since the determination of the bonding failure is accurate, the possibility of manufacturing a defective product is extremely reduced.

  Therefore, the ultrasonic metal bonding machine 401 according to the present embodiment is capable of manufacturing a non-defective bonding metal plate more efficiently than the ultrasonic metal bonding machines according to the first to third embodiments. Can do. Accordingly, the bonded metal plate in this case can ensure higher quality than the bonded metal plate manufactured by the ultrasonic metal bonding machine according to the first to third embodiments.

  As mentioned above, although embodiment concerning this invention was illustrated, this embodiment does not limit the content of this invention. Various modifications can be made without departing from the scope of the claims of the present invention. For example, the output waveform or the subsidence amount waveform may be displayed using a display device so that the operator can visually determine whether or not the joint is good.

As described above, in the ultrasonic metal bonding machine according to the present invention, a good bonded metal plate can be efficiently manufactured. Further, in bonding metal plates of the matter, it is possible to secure high quality by using ultrasonic metal bonding machine present invention. Therefore, the present invention can be fully utilized in the technical field of ultrasonic metal bonding machines.

DESCRIPTION OF SYMBOLS 1 Ultrasonic metal joining machine 2 Anvil 3 Horn 4 Output sensor 5 Ultrasonic metal joining machine controller 10 Metal plate 10a Joining surface 11 Metal plate 11a Joining surface 13 Joined metal plate 40 Displacement sensor 50 Ultrasonic metal joining machine controller 51 Ultrasonic Metal Bonding Machine Controller 52 Ultrasonic Metal Bonding Machine Controller 53 Ultrasonic Metal Bonding Machine Controller 101 Ultrasonic Metal Bonding Machine 201 Ultrasonic Metal Bonding Machine 301 Ultrasonic Metal Bonding Machine 401 Ultrasonic Metal Bonding Machine C Step D D Subduction P Output t Predetermined time

Claims (1)

The two metal plates are placed on the anvil in a stacked state, and the two metal plates are sandwiched between the anvil and the horn. In this state, the horn is ultrasonically vibrated in the horizontal direction and the upper metal plate is sandwiched between the two metal plates. In an ultrasonic metal joining machine that obtains a joined metal plate by applying this ultrasonic vibration to the plate and sliding the two metal plates to the left and right to join them,
Detection means for continuously detecting the driving force of the horn of the ultrasonic metal bonding machine from the start of ultrasonic vibration of the horn and outputting a detection signal;
Based on the detection signal output from the detection means, to create an output wave form until a predetermined time elapses, when the state of the waveform of this is different from the state of the waveform of the normal joint, the two sheets A horn drive control means for judging that the bonding of the metal plate is defective and stopping the ultrasonic vibration of the horn,
The horn drive control means determines that the output waveform state is normal when the number of times the output temporarily decreases with respect to the proportionally increasing output trajectory indicated by the output waveform is smaller than that during normal bonding. An ultrasonic metal bonding machine characterized in that it determines that the output waveform is different from the state of the output waveform and stops ultrasonic vibration of the horn.

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