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JPS57178825A - Oscillation circuit for ultrasonic plastic welding - Google Patents

Oscillation circuit for ultrasonic plastic welding

Info

Publication number
JPS57178825A
JPS57178825A JP6400081A JP6400081A JPS57178825A JP S57178825 A JPS57178825 A JP S57178825A JP 6400081 A JP6400081 A JP 6400081A JP 6400081 A JP6400081 A JP 6400081A JP S57178825 A JPS57178825 A JP S57178825A
Authority
JP
Japan
Prior art keywords
voltage
output
welding
amplifier
supplied
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6400081A
Other languages
Japanese (ja)
Other versions
JPS6153944B2 (en
Inventor
Akira Minagawa
Akira Maue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPC Electronics Corp
Shimada Rika Kogyo KK
Original Assignee
SPC Electronics Corp
Shimada Rika Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SPC Electronics Corp, Shimada Rika Kogyo KK filed Critical SPC Electronics Corp
Priority to JP6400081A priority Critical patent/JPS57178825A/en
Publication of JPS57178825A publication Critical patent/JPS57178825A/en
Publication of JPS6153944B2 publication Critical patent/JPS6153944B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To carry out efficiently a precise plastic welding, by dividing the voltage to be supplied to an ultrasonic oscillator into two stages so that the voltage at the start of welding is a low output while the voltage in the later stage is a high output. CONSTITUTION:An exciting step amplifier A1, a power amplifier A2 for amplifying the output of the amplifier A1, and an output circuit F1 for sending its output to the ultrasonic oscillator T1 and connected to the power amplifier A2 are provided. An output signal from the output circuit F1 is fed back to the exciting step amplifier A to carry out the oscillation. An alternate current supplied from an alternate current source is rectified in an electric source M3 so that a direct current is supplied to the power amplifier A2. Since the ultrasonic oscillation circuit can vary the energized voltage, the voltage can be energized to the oscillator according to the preheating period, the welding period, the preheating voltage and the welding voltage level, and therefore the occurence of cracks or deformation can be prevented, and the welding can be performed precisely.
JP6400081A 1981-04-30 1981-04-30 Oscillation circuit for ultrasonic plastic welding Granted JPS57178825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6400081A JPS57178825A (en) 1981-04-30 1981-04-30 Oscillation circuit for ultrasonic plastic welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6400081A JPS57178825A (en) 1981-04-30 1981-04-30 Oscillation circuit for ultrasonic plastic welding

Publications (2)

Publication Number Publication Date
JPS57178825A true JPS57178825A (en) 1982-11-04
JPS6153944B2 JPS6153944B2 (en) 1986-11-20

Family

ID=13245498

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6400081A Granted JPS57178825A (en) 1981-04-30 1981-04-30 Oscillation circuit for ultrasonic plastic welding

Country Status (1)

Country Link
JP (1) JPS57178825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818313A (en) * 1985-06-28 1989-04-04 Tetra Pak International Method for regulating the energy supply to a sealing device for the sealing of thermoplastic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818313A (en) * 1985-06-28 1989-04-04 Tetra Pak International Method for regulating the energy supply to a sealing device for the sealing of thermoplastic material

Also Published As

Publication number Publication date
JPS6153944B2 (en) 1986-11-20

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