CN211697434U

CN211697434U - Adhesive tape retention test box

Info

Publication number: CN211697434U
Application number: CN201921967999.1U
Authority: CN
Inventors: 陈灏渠
Original assignee: Huizhou Haoming Technology Co Ltd
Current assignee: Huizhou Haoming Technology Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-10-16
Anticipated expiration: 2029-11-14

Abstract

A tape retention test box comprises an operation cabinet, a timer, a hook, an auxiliary component and a timing trigger module. The operation cabinet is provided with a test chamber and a control cavity, a through hole is formed in the inner wall in the test chamber, a trigger flange is arranged on the outer wall of the hook, and the trigger flange is positioned in the control cavity; the timing trigger module comprises a normally open terminal, a normally closed terminal, a holding terminal, a cut-off resistor, a trigger resistor and an elastic piece, wherein the elastic piece is used for pushing the trigger flange to move towards the direction close to the normally closed terminal. Normally open terminal, normally closed terminal, keep the terminal, stop resistance, trigger resistance constitute trigger circuit, replace pressure sensor drive timer through output current's change and start or stop, reduce equipment cost of manufacture, and inside spare part is few, and convenient to detach replaces, and the maintenance degree of difficulty is low, and couple and elastic component constitute movable trigger component, triggers the timer through the physical contact, improves the response efficiency of timer, the degree of accuracy of test.

Description

Adhesive tape retention test box

Technical Field

The utility model relates to a test instrument especially relates to an adhesive tape retention test box.

Background

Therefore, before the adhesive tape leaves the factory, the adhesive tape needs to be subjected to a retention test to determine whether the retention time of the adhesive force of the adhesive tape reaches the standard or not.

The holding power test of the adhesive tape is generally carried out in a holding power test box, a trigger component, a timer and a tension meter are arranged in the holding power test box, two ends of the tension meter are respectively connected with the inner wall of the test box and the trigger component, the tension meter is electrically connected with the timer, when the test is carried out, two ends of the adhesive tape to be tested are respectively stuck on two mirror panels, one mirror panel is hung on the trigger component, a weight is arranged on the other mirror panel, the tension meter detects the weight of the weight and sends out an electric signal to drive the timer to start timing, when the adhesive force of the adhesive tape fails, the tension meter falls down together with the weight, the trigger component is not stressed, no tension signal is output by the tension meter at the moment, the timing of the timer is terminated, and the holding power data of the test adhesive tape are recorded.

However, in the above test box, the tension meter is used as a medium for starting and stopping the timer in the test process, that is, the tension meter needs to be powered to keep normal operation, and in the process of setting the tape to be tested, the position of the trigger member does not change obviously, whether to start timing needs to be confirmed by observing the timer, and the tension meter has a probability to be triggered in the case of setting the weight, that is, after the weight falls, the tension meter is triggered by the gravity of the trigger member and the mirror surface plate, at this time, the timer can still receive the electric signal of the tension meter, timing can continue, the detected holding force data has an error and is not the holding force data of the tape to be tested in the case of loading, the test accuracy is affected, the tape holding force needs to be measured for a long time, repeated tests seriously affect the quality inspection efficiency of the product, and the tension meter is an electronic component, when the device is damaged, the maintenance is difficult and the maintenance cost is high. In order to avoid the false start of the tension meter, the range of the trigger tension is expanded, however, when the adhesive tape fails, the adhesive tape does not drop instantly, when the tension caused by the dropping process exceeds the preset range of the tension meter, the adhesive tape still adheres to the mirror light plate, but the timer is stopped, and the measurement error is large.

Therefore, how to optimize the structure of the retention force testing device, improve the testing accuracy, and reduce the maintenance difficulty and the manufacturing cost of the equipment is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a sticky tape retentivity test box, adopting the contact to trigger the structure and replacing the tensiometer start-up time-recorder, improving the special degree of accuracy of test, and the internals is simple, and the cost of manufacture is low, and the maintenance degree of difficulty that breaks down is low.

The purpose of the utility model is realized through the following technical scheme:

an adhesive tape holding force test case includes: the device comprises an operation cabinet, a timer, a hook, a timing trigger module and an auxiliary component;

the operation cabinet is provided with a test chamber and a control cavity, the inner wall in the test chamber is provided with a through hole, and the through hole is used for communicating the test chamber and the control cavity;

the timer is arranged on the control cavity;

the hook penetrates through the through hole, a trigger flange is arranged on the outer wall of the hook, and the trigger flange is positioned in the control cavity;

the timing trigger module comprises a normally open terminal, a normally closed terminal, a holding terminal, a stopping resistor, a trigger resistor and an elastic piece, wherein the normally open terminal, the normally closed terminal and the holding terminal are arranged in the control cavity at intervals, two ends of the stopping resistor are respectively and electrically connected with the normally open terminal and the holding terminal, two ends of the trigger resistor are respectively and electrically connected with the normally closed terminal and the holding terminal, the normally open terminal and the normally closed terminal are electrically connected with a timer, two ends of the elastic piece are respectively abutted against the inner walls of the trigger flange and the control cavity, the holding terminal is attached to the outer wall of the hook, and the elastic piece is used for pushing the trigger flange to move towards the direction close to the normally closed terminal;

the auxiliary component comprises a mirror plane light plate and a hanging buckle, two ends of the adhesive tape to be tested are respectively adhered to the mirror plane light plate and the hanging buckle, the mirror plane light plate is used for being connected with the hook, and the hanging buckle is used for being connected with the weight.

In one embodiment, the resistance value of the cut-off resistor is larger than that of the trigger resistor.

In one embodiment, the inner wall of the control cavity is provided with a limit groove, and the elastic piece is accommodated in the limit groove.

In one embodiment, the resilient member is a spring.

In one embodiment, the hook comprises a guide part and a barb part, the guide part penetrates through the through hole, and the barb part is arranged at one end, far away from the trigger flange, of the guide part.

In one embodiment, a quenching layer is arranged on the outer wall of the barb part.

In one embodiment, an insulating layer is arranged on the outer wall of the barb part.

In one embodiment, a copper contact block is arranged at one end of the normally open terminal close to the trigger flange.

In one embodiment, an indicator light is arranged on the operation cabinet panel, and the indicator light is electrically connected with the timer.

In one embodiment, an indication groove is formed in the center of the mirror light plate, and the tape to be tested is attached to the indication groove.

Compared with the prior art, the utility model discloses at least, following advantage has:

1. the timing trigger module is provided with a trigger circuit consisting of a normally open terminal, a normally closed terminal, a holding terminal, a cut-off resistor and a trigger resistor, and the change of output current replaces a pressure sensor to drive a timer to start or stop, so that the manufacturing cost of equipment is reduced.

2. The timing trigger module has few internal parts, is convenient to disassemble and replace and has low maintenance difficulty;

3. the hook and the elastic piece form a movable trigger component, and the timer is triggered through physical contact, so that the response efficiency of the timer is improved, and the test accuracy is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an internal structure of a tape retention test box in an operating state according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a tape retention test box in an embodiment of the present invention;

FIG. 3 is a schematic diagram of the timing trigger module of the tape retention test box of FIG. 1 in a tape failure state.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a tape retention test box 10 includes: the operation cabinet 100, the timer 200, the couple 300, auxiliary component 500 and timing trigger module 400, the timer 200 and the timing trigger module 400 are all installed in the operation cabinet 100, and the timer 200 is electrically connected with the timing trigger module 400, the couple 300 is movably arranged in the operation cabinet 100 and forms a contact type trigger mechanism with the timing trigger module 400 for controlling the timer 200 to time, the structure of the couple 300 is optimized, and the couple is matched with the timing trigger module 400 to replace a tension sensor to drive the timer 200 to run, so that the actual response speed of the timer 200 is improved, the accuracy of the adhesive tape retention test is further improved, the timing trigger module 400 has few internal components and is simple in structure, the manufacturing cost is low, and meanwhile, the maintenance is convenient.

Referring to fig. 1, the operation cabinet 100 is provided with a test chamber 110 and a control chamber 120, a through hole is formed in an inner wall of the test chamber 110 and used for communicating the test chamber 110 and the control chamber 120, the test chamber 110 is a main working area, the tape 20 to be tested is attached, the operation of setting the weight 30 and the like is completed in the test chamber 110, and the control chamber 120 is used for accommodating and protecting the timer 200, the hook 300 and the timing trigger module 400.

Referring to fig. 2, the timer 200 is installed on the control chamber 120, and the display screen of the timer 200 is exposed outside the control chamber 120, and the operator obtains the adhesive duration of the tape by observing the value on the display screen of the timer 200, specifically, after the operator attaches the tape 20 to be tested to the auxiliary member 500, the tape is hung on the hook 300, and then the weight 30 is hung, when the operator releases the weight 30, the hook 300 is pulled down under the gravity action of the weight 30, i.e., the timing trigger module 400 is triggered, at this time, the timer 200 starts timing, and under the action of the weight 30, the tape 20 to be tested is torn off, and the timer 200 finishes timing when the tape 20 to be tested completely leaves the auxiliary member 500.

Referring to fig. 1, a hook 300 is inserted through a through hole, and a trigger flange 310 is disposed on an outer wall of the hook 300, and the trigger flange 310 is located in the control chamber 120; the hanger 300 is made of stainless steel.

Referring to fig. 1, the timing trigger module 400 includes a normally open terminal 410, a normally closed terminal 420, a holding terminal 430, a stopping resistor 440, a trigger resistor 450 and an elastic member 460, the normally open terminal 410, the normally closed terminal 420 and the holding terminal 430 are disposed in the control cavity 120 at intervals, two ends of the stopping resistor 440 are electrically connected to the normally open terminal 410 and the holding terminal 430 respectively, two ends of the trigger resistor 450 are electrically connected to the normally closed terminal 420 and the holding terminal 430 respectively, the normally open terminal 410 and the normally closed terminal 420 are electrically connected to the timer 200, two ends of the elastic member 460 are abutted to inner walls of the trigger flange 310 and the control cavity 120 respectively, the holding terminal 430 is attached to an outer wall of the hook 300, and the elastic member 460 is used for pushing the trigger flange 310 to move toward a direction close to the normally;

it should be noted that, in an initial state, referring to fig. 3, the elastic element 460 applies an elastic force to the trigger flange 310, so that the trigger flange 310 keeps contacting with the normally closed terminal 420, and at this time, the trigger resistor 450 is short-circuited, that is, only the cut-off resistor 440 is connected to the circuit;

referring to fig. 1, after the tape 20 to be tested is disposed on the auxiliary member 500 and the weight 30 is hung, the gravity of the weight 30 acts on the hook 300, so that the trigger flange 310 overcomes the elastic force of the elastic member 460 and drops to contact the normally open terminal 410, at this time, the cut-off resistor 440 is short-circuited, that is, only the trigger resistor 450 is connected to the circuit, and since the connected resistors are different and the voltage of the circuit is not changed, the output current is changed, and the timer 200 is started or stopped by recognizing the change of the current.

Referring to fig. 1, the auxiliary member 500 includes a mirror light plate 510 and a hanging buckle 520, two ends of the tape 20 to be tested are respectively adhered to the mirror light plate 510 and the hanging buckle 520, the mirror light plate 510 is used for being connected with the hook, and the hanging buckle 520 is used for being connected with the weight 30. When the adhesive tape 20 to be tested is arranged, one end of the adhesive tape 20 to be tested is pasted to the mirror-surface light plate 510, the other end of the adhesive tape 20 to be tested is pasted to the hanging buckle 520, the mirror-surface light plate 510 and the hanging buckle 520 are connected through the adhesive tape 20 to be tested, the mirror-surface light plate 510 is hung on the hook 300, the hanging buckle 520 is suspended in the test chamber 110 at the moment, the weight 30 is hung on the hanging buckle 520, the gravity of the weight 30 acts on the adhesive tape 20 to be tested at the moment, the adhesive tape 20 to be tested is tensioned, the gravity of the weight 30 is transmitted to the hook 300, the gravity of the weight 30 is larger than the elastic force of the elastic piece 460, even if the hook 300 overcomes the elastic force of the elastic piece 460, the elastic piece 460 contracts, and the hook 300 descends;

the gravity action of weight 30 is on the sticky tape 20 that awaits measuring, make sticky tape 20 that awaits measuring have the trend of keeping away from mirror surface light board 510, sticky tape 20 self viscous force that awaits measuring is used for overcoming the gravity that weight 30 applyed, be connected weight 30 and couple 300, when the sticky tape 20 viscous force that awaits measuring became invalid, weight 30 whereabouts under the action of gravity, because the gravity that loses weight 30 and provide, couple 300 rises under the elastic force effect of elastic component 460, trigger flange 310 leaves normally open terminal 410, and finally contact with normally closed terminal 420 once more.

When the trigger flange 310 leaves the normally open terminal 410, the cut-off resistor 440 and the trigger resistor 450 are connected to the circuit in a series connection manner, and at this time, the resistance value is the highest, that is, the current is the lowest, and the timer 200 is triggered to stop timing in this state, so that the timer 200 stops timing at the moment when the adhesive force of the tape 20 to be tested is completely ineffective, the response speed is high, and the accurate recording time of the timer 200 is ensured.

In one embodiment, the resistance of the cut-off resistor 440 is greater than the resistance of the trigger resistor 450, that is, the output current of the cut-off resistor 440 when connected to the circuit is less than the output current of the trigger resistor 450 when connected to the circuit, that is, when the output current is large, the timer 200 starts to count time, and when the output current is small, the timer 200 stops counting time.

Referring to fig. 1, in order to prevent the elastic member 460 from deviating, a limiting groove 121 is formed on an inner wall of the control cavity 120, the elastic member 460 is accommodated in the limiting groove 121, and the inner wall of the limiting groove 121 limits a moving range of the elastic member 460, so that the elastic member 460 is prevented from radially moving in a stretching process, and the hook 300 is prevented from being locked. Specifically, the elastic member 460 is a spring.

In an embodiment, the hook 300 includes a guide portion 320 and a barb portion 330, the guide portion 320 is provided with a through hole, the barb portion 330 is disposed on an end of the guide portion away from the trigger flange 310, an outer wall of the guide portion 320 is attached to a hole wall of the through hole to guide a sliding direction of the hook 300, the barb portion 300 is bent to hook the mirror-surface light plate 510, in order to improve a service life of the barb portion 330 and structural stability of the barb portion 330, a quenching layer is disposed on an outer wall of the barb portion 330, and an insulating layer is disposed on an outer wall of the barb portion 330.

In order to prolong the service life of the normally open terminal 410, a copper contact block 411 is disposed at one end of the normally open terminal 410 close to the trigger flange 310, and similarly, in order to prolong the service life of the normally closed terminal 420, a copper contact block 411 is disposed at one end of the tone arm terminal 420 for contacting the trigger flange 310.

In order to more intuitively judge whether the adhesive tape 20 to be tested is normally set and whether the timer 200 normally performs timing, an indicator lamp is arranged on the panel of the operation cabinet 100 and is electrically connected with the timer 200. When the timer 200 starts to count time, the indicator lamps are simultaneously turned on, when the timer 200 stops counting time, the indicator lamps are turned off, and an operator can judge whether the adhesive tape retention test box 10 normally runs or not by observing whether the indicator lamps are turned on or not.

In order to ensure the testing accuracy and ensure the consistency of the adhering area of the tape 20 to be tested, an indication groove 511 is formed in the center of the mirror light plate 510, and the tape 20 to be tested is attached in the indication groove 511.

1. the timing trigger module 400 is provided with a trigger circuit consisting of a normally open terminal 410, a normally closed terminal 420, a holding terminal 430, a cut-off resistor 440 and a trigger resistor 450, and the change of output current replaces a pressure sensor to drive the timer 200 to start or stop, so that the manufacturing cost of equipment is reduced.

2. The timing trigger module 400 has few internal parts, is convenient to disassemble and replace and has low maintenance difficulty;

3. the hook 300 and the elastic member 460 constitute a movable trigger member to trigger the timer 200 through physical contact, thereby improving the response efficiency of the timer 200 and the accuracy of the test.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a sticky tape retention test case which characterized in that includes:

a timer mounted on the control chamber;

the timing trigger module comprises a normally open terminal, a normally closed terminal, a holding terminal, a cut-off resistor, a trigger resistor and an elastic piece, wherein the normally open terminal, the normally closed terminal and the holding terminal are arranged in the control cavity at intervals, two ends of the cut-off resistor are respectively and electrically connected with the normally open terminal and the holding terminal, two ends of the trigger resistor are respectively and electrically connected with the normally closed terminal and the holding terminal, the normally open terminal and the normally closed terminal are both electrically connected with a timer, two ends of the elastic piece are respectively abutted against the trigger flange and the inner wall of the control cavity, the holding terminal is attached to the outer wall of the hook, and the elastic piece is used for pushing the trigger flange to move towards the direction close to the normally closed terminal;

2. The tape retention test case of claim 1, wherein the resistance value of the cut-off resistor is greater than the resistance value of the trigger resistor.

3. The adhesive tape retention test box according to claim 1, wherein a limiting groove is formed on an inner wall of the control chamber, and the elastic member is received in the limiting groove.

4. The tape retention test case of claim 1, wherein the resilient member is a spring.

5. The tape retention test case of claim 1, wherein the hook comprises a guide portion and a barb portion, the guide portion is disposed through the through hole, and the barb portion is disposed on an end of the guide portion away from the trigger flange.

6. The tape retention test box according to claim 5, wherein a quenching layer is provided on an outer wall of the barb portion.

7. The tape retention test case of claim 5, wherein an insulating layer is provided on an outer wall of the barb portion.

8. The tape retention test case of claim 1, wherein a copper contact block is disposed on an end of the normally open terminal proximate the trigger flange.

9. The tape retention test case of claim 1, wherein an indicator light is disposed on the operating cabinet panel, and the indicator light is electrically connected to the timer.

10. The adhesive tape retention test case according to claim 1, wherein an indication groove is formed at a central position of the mirror-like light plate, and the adhesive tape to be tested is attached to the indication groove.