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Hot Melt Glue Detector TH
Hot Melt Glue Detector TH
CE※1
※1 Conforming to EMC Directive(TH-12CPS only)


Miniature sensor head [Spot type]

The sensor head can be mounted in a congested and tight place as it has a miniature size of W18 x H33 x D23 mm W0.709 x H1.299 x D0.906 in.
Further, since a red alignment marker has been provided, setting can be done while confirming the detection point projected on the work-piece.

Miniature sensor head Spot type

Wide sensing area [Long sensing range type]

Since the view field is ø30 mm ø1.181 in at a sensing distance of 300 mm 11.811 in, the hot melt glue can be detected even if its position of application varies slightly.

Wide sensing area  Long sensing range type

Sensitive and reliable detection

The spot type reliably detects a hot melt drop of 3 mm 0.118 in diameter at 85 ℃ 185 ℉, or more, and the long sensing range type reliably detects a hot melt drop of 6 mm 0.236 in diameter (equivalent to 3 x 10 mm 0.118 x 0.394 in) at 100 ℃212 ℉ or more.

Long sensing range 300 mm 11.811 in [Long sensing range type]

A long sensing range of 300 mm 11.811 in max. is possible. Hot melt glue can be reliably detected not only on small pharmaceutical or confectionary boxes, but also on large cardboard boxes.

Suitable for high speed production line

As the response time is 1 ms or less, the TH series reliably detects hot melt adhesives even where product boxes flow extremely fast. 
(However, for the long sensing range type, this is valid for a sensing distance of 200 mm 7.874 in or less.)

Suitable for high speed production line

Sensor head with operation indicator [Long sensing range type]

Since the operation indicator lights up when hot melt glue is detected, position alignment of the sensor head is easy.

Sensor head with operation indicator Long sensing range type

Easy start-up by teaching

The optimum sensitivity can be easily set by the teaching method.
Moreover, since the teaching is done with the boxes moving, it is not required to stop the production line for teaching.

Easy start-up by teaching

Eight-channel registration

Since sensitivity settings for eight channels can be stored, product changeover is smooth. The required channel can be selected either by the front panel or by external channel select inputs.

Eight-channel registration

Three functions for inspecting hot melt glue application

1. Sensitivity level set-up [To inspect quantity of applied hot melt glue]
- The sensitivity level (operating threshold level) can be adjusted over a scale of ten steps after the teaching. It enables detection of hot melt glue of a certain amount or more, but not inadequate glue.

Sensitivity level set-up To inspect quantity of applied hot melt glue

2. Presence evaluation [To inspect presence of hot melt glue on every box]
- The synchronization signal corresponding to box passage is input into the controller and if the sensor detects even a small amount of glue while the box is passing, the result is OK.

Presence evaluation To inspect presence of hot melt glue on every box

Note:
An external synchronization signal (corresponding to box passage) is needed for using this function.

3. Length evaluation To inspect the length of hot melt bead on every box
- The sensor evaluates the length of the hot melt bead as OK or NG. Since evaluation is done with the synchronization signal corresponding to the box passage input into the controller, the sensor adapts to any change in the line speed.
Note:
An external synchronization signal (corresponding to box passage) is needed for using this function.

Length evaluation To inspect the length of hot melt bead on every box

OFF-delay timer

The OFF-delay timer extends the output signal for an approx. 40 ms fixed time period. This is useful for detecting very short hot melt beads on a quick production line or for sending the signal to a device having a slow response time.

OFF-delay timer
Type Appearance Sensing range Set model No. Output
Sensor head Controller
spot 40±10mm
1.575 ± 0.394 in
TH-11CS NPN open-collector
transister
Long sensing range NPN output 10 to 300mm
0.394 to 11.811 in (Note)
TH-12CS NPN open-collector
transister
PNP output TH-12CPS PNP open-collector
transister



Thru-beam Type Ultrasonic Sensor US-N300

Thru-beam Type Ultrasonic Sensor US-N300

Reliable detection of transparent objects

The sensor reliably detects transparent films or transparent objects.

Only 16 mm 0.630 in thick

Its 16 mm 0.630 in thick compact body allows mounting in a narrow space.

Simple operation mode selection

The operation mode can be selected either sound-received-ON or sound-blocked-ON simply by changing the connection of the control input wire.

Type Appearance Sensing range Model No. Output
Thru-beam 2 m ( 6.562 ft ) cable length 300mm
11.811 in
US-N300 NPN transistor
universal
5 m ( 16.404 ft ) cable length US-N300-C5

Detecting transparent film or transparent glass
Detecting transparent film or transparent glass
Detecting transparent bottles
Detecting transparent bottles

Detecting transparent and opaque objects
Detecting transparent and opaque objects

Particular Use Sensors
Model TH 
Descrition
TH-11 Spot type 10 M.M.
TH-11CS Spot type 10 M.M.
TH-12CPS Long sensing range type 300 M.M.
TH-12CS Long sensing range type 300 M.M.
TH-B1 Heat Shield
TH-B2 Heat Shield
TH-C1 Controller
Model US-N300 
Descrition
US-N300 Thru-beam 300 M.M.
US-N300-C5 Thru-beam 300 M.M.
US-N300D Thru-beam 300 M.M.
US-N300P Thru-beam 300 M.M.
US-N300-P Thru-beam 300 M.M.

 

 

 

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