CN2269952Y - Plastic film heat sealing machine - Google Patents
Plastic film heat sealing machine Download PDFInfo
- Publication number
- CN2269952Y CN2269952Y CN 96215915 CN96215915U CN2269952Y CN 2269952 Y CN2269952 Y CN 2269952Y CN 96215915 CN96215915 CN 96215915 CN 96215915 U CN96215915 U CN 96215915U CN 2269952 Y CN2269952 Y CN 2269952Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- sealing machine
- output
- control
- delay
- 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.)
- Expired - Fee Related
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- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a plastic film heat sealing machine which is composed of a heat sealing machine body, and a control circuit, a bidirectional controlled silicon and a heating wire which are arranged in the heat sealing machine body, wherein, the control circuit comprises a delay switch circuit and a controlled silicon trigger circuit; the bidirectional controlled silicon and the heating wire are connected to an alternating-current power circuit in series, the voltage of an alternating-current power supply outputs and provides a direct-current power supply of the control circuit through a rectification bridge, the output end of a delay switch is connected with the control end of the controlled silicon trigger circuit, and the output end of the controlled silicon trigger circuit is connected with the triggering end of the bidirectional controlled silicon. The utility model has the advantages of power saving, extensive operating range and strong applicability.
Description
The utility model belongs to electric type, relates in particular to a kind of plastic sheeting heat-sealing machine.
The present heat-sealing machine that uses on the market, major part is with the 220V AC power, by transformation or automatic coupling voltage regulator, reducing to 40V left and right sides low pressure compresses plastic foil by heating wire and comes heat seal, the heat-sealing machine shortcoming of this form is limited by transformer, power attenuation is big, fuel factor is slow, heat seal is insecure, does not have way processing for the big diaphragm of thickness.
The purpose of this utility model provides a kind of high efficiency, plastic sheeting heat-sealing machine that applicability is strong.
For achieving the above object, the utility model has adopted following technical scheme: a kind of plastic sheeting heat-sealing machine, form by heat-sealing machine body and built-in control circuit, bidirectional triode thyristor, heater strip, described control circuit comprises delay switch circuit and thyristor gating circuit, bidirectional triode thyristor and heater strip series connection are in AC power circuit, AC supply voltage provides the dc source of control circuit by rectifier bridge output, the output of delay switch connects the control end of thyristor gating circuit, and the output of thyristor gating circuit connects the The Trigger of Bidirectional Triode Thyristor end.
The utility model is described in further detail below in conjunction with accompanying drawing
Fig. 1 is the utility model circuit working principle schematic
As shown in Figure 1: bidirectional triode thyristor KZ
1Be connected in series with heater strip JRS1 and be connected in the AC power circuit, AC power is by rectifier bridge, low tension switch K
1Output provides the dc source of control circuit, and delay switch is by rc-delay circuit (resistance R
1, R
6, variable resistor R
2, charging capacitor C
1Form) and a transistor Q
1Form the output (R of rc-delay circuit
6An end) meet transistor Q
1Base stage b
1End, thyristor gating circuit is by rc-delay circuit (resistance R
3. variable resistor R
4, capacitor C
2Form) and single-node transistor Q
2Constitute the control utmost point b2 of the output order junction transistors of this rc-delay circuit, transistor Q
1Colelctor electrode output through a backward dioded D
1Order junction transistors Q
2Control utmost point b
2, the output of The whole control circuit (a, b end) connects the The Trigger of Bidirectional Triode Thyristor end.
Its operation principle is: after the energising of 220V power supply, start working, put by the plastic foil of heat seal, heated filament presses, low tension switch K
1Connect, circuit working is because capacitor C
1There is Q
1Be in and end, Q
2Produce sawtooth waveforms, the conducting controllable silicon because control controllable silicon phase shifting angle changes the output AC voltage virtual value, is added on the heating wire after the 220V voltage step-down, produces heat plastic film is heated, and works as capacitor C
1After being full of electricity, Q
1Base voltage rises, conducting state, Q
2End, controllable silicon is in shutoff thereupon, and heated filament does not have electric current to pass through, and finishes heat seal work.Change variable resistor R
2Resistance can be regulated working time of delay switch, sets delay time with the control degree of heat according to the length of the thin and thick of plastic sheeting, required heat time heating time.To thicker plastic foil, also can hotly get very firm like this.Change variable resistor R
4Can regulate the phase shifting angle of thyristor gating circuit, thereby the size of control operating voltage virtual value can be regulated heating voltage 0-200V, thereby improved working range greatly.
The technical program is owing to adopt advanced electronic component, utilize controllable silicon buck functionality replacement transformer in the past, thereby can economize on electricity energy more than 40 percent, and pass through control adjustable settings working time, the heating intensity of control circuit, thereby working range is wide, applicability is strong.
Claims (2)
1, a kind of plastic sheeting heat-sealing machine, form by heat-sealing machine body and built-in control circuit, bidirectional triode thyristor, heater strip, it is characterized in that: described control circuit comprises delay switch circuit and thyristor gating circuit, bidirectional triode thyristor and heater strip series connection are in AC power circuit, AC supply voltage provides the dc source of control circuit by rectifier bridge output, the output of delay switch connects the control end of thyristor gating circuit, and the output of thyristor gating circuit connects the The Trigger of Bidirectional Triode Thyristor end.
2, plastic sheeting heat-sealing machine according to claim 1 is characterized in that: described delay switch is made up of a rc-delay circuit and a transistor, and the output of rc-delay circuit connects transistorized base stage; Thyristor gating circuit is made of rc-delay circuit and single-node transistor, the control utmost point of the output order junction transistors of this rc-delay circuit; Transistorized colelctor electrode output is through the control utmost point of a backward dioded order junction transistors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96215915 CN2269952Y (en) | 1996-07-19 | 1996-07-19 | Plastic film heat sealing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96215915 CN2269952Y (en) | 1996-07-19 | 1996-07-19 | Plastic film heat sealing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2269952Y true CN2269952Y (en) | 1997-12-10 |
Family
ID=33897569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 96215915 Expired - Fee Related CN2269952Y (en) | 1996-07-19 | 1996-07-19 | Plastic film heat sealing machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2269952Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109496002A (en) * | 2018-11-14 | 2019-03-19 | 长沙悦翼模塑科技有限公司 | It is a kind of can electrodeless adjustment electromagnetic induction rapid heater |
-
1996
- 1996-07-19 CN CN 96215915 patent/CN2269952Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109496002A (en) * | 2018-11-14 | 2019-03-19 | 长沙悦翼模塑科技有限公司 | It is a kind of can electrodeless adjustment electromagnetic induction rapid heater |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |