CN106769487B - Tension testing device and method - Google Patents
Tension testing device and method Download PDFInfo
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- CN106769487B CN106769487B CN201611154567.XA CN201611154567A CN106769487B CN 106769487 B CN106769487 B CN 106769487B CN 201611154567 A CN201611154567 A CN 201611154567A CN 106769487 B CN106769487 B CN 106769487B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
Abstract
The invention provides a tension testing device which comprises a bottom plate, a supporting mechanism, a positioning mechanism, a tension mechanism and a limiting block, wherein the supporting mechanism, the positioning mechanism, the tension mechanism and the limiting block are fixed on the bottom plate; a limiting hole is formed in the limiting block, and the size of the limiting hole is larger than the size of a contact pin of the earphone plug to be tested and smaller than the size of a sleeve cap of the earphone plug; the support mechanism comprises a positioning seat fixed on the bottom plate, a limiting groove arranged at the end part of the positioning seat and a positioning block extending from the limiting groove to one side of the positioning mechanism, the contact pin is limited in the limiting groove after passing through the limiting hole, and the limiting block is limited in the positioning block; the positioning mechanism comprises a clamping jaw cylinder, a left pressure head and a right pressure head which are fixed on the clamping jaw cylinder, and a left thimble and a right thimble which correspond to the left pressure head and the right pressure head in position are respectively arranged in the left pressure head and the right pressure head; the tension mechanism comprises a drawing cylinder. The tensile force testing efficiency and the tensile force testing precision can be improved by utilizing the invention.
Description
Technical Field
The invention relates to the technical field of product tension testing, in particular to a tension testing device and a tension testing method for an earphone plug.
Background
In the electronics and machining industries, tensile testing is often performed on product parts to assess their resistance to tensile stress. Currently, a common tensile test method includes: fixing a product to be tested on a product fixing seat through a pressing buckle according to a certain direction, connecting the tension test position of the product with a hook, adjusting the direction of the product or the direction of a tension meter, drawing the tension meter at a constant speed and reading test data on the tension meter, opening the pressing buckle after the test is finished to adjust the placement direction of the product, and detecting the next tension test position after the product is fixed again until all places needing to be tested finish the tension test.
It can be known that the existing tension test method has the following defects: 1. the product orientation is required to be continuously adjusted according to the product structure during testing, the flexibility is poor, the operation is complicated, and the testing efficiency is low; 2. the tension meter needs to be manually pulled, and the operation strength is high and difficult to realize when the test is carried out on a large scale; 3. the tension direction is manually controlled, test deviation is easy to exist, and test results are not uniform for different testers.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a tensile testing apparatus and a testing method thereof, so as to solve the problems of complex operation, poor consistency of testing structure, low efficiency, etc. in the conventional tensile testing of products.
The invention provides a tension testing device which comprises a bottom plate, a supporting mechanism, a positioning mechanism, a tension mechanism and a limiting block, wherein the supporting mechanism, the positioning mechanism, the tension mechanism and the limiting block are fixed on the bottom plate; a limiting hole is formed in the limiting block, and the size of the limiting hole is larger than the size of a contact pin of the earphone plug to be tested and smaller than the size of a sleeve cap of the earphone plug; the support mechanism comprises a positioning seat fixed on the bottom plate, a limiting groove arranged at the end part of the positioning seat and a positioning block extending from the limiting groove to one side of the positioning mechanism, the contact pin is limited in the limiting groove after passing through the limiting hole, and the limiting block is limited in the positioning block; the positioning mechanism comprises a clamping jaw air cylinder, a left pressure head and a right pressure head which are fixed on the clamping jaw air cylinder, a left thimble and a right thimble which correspond to each other in position are respectively arranged in the left pressure head and the right pressure head, and a contact pin positioned in the supporting mechanism is limited between the left thimble and the right thimble; the tension mechanism comprises a drawing cylinder, and the drawing cylinder is used for driving the positioning mechanism and a contact pin fixed in the positioning mechanism to move towards one side far away from the sleeve cap.
In addition, the preferable scheme is that a left clamping groove arranged around the left thimble is arranged on the left pressure head, and a right clamping groove arranged around the right thimble is arranged on the right pressure head; when the left pressure head and the right pressure head move to be in contact with each other, the left clamping groove and the right clamping groove form a 'return' shaped groove matched with the positioning block, and the positioning block is limited in the 'return' shaped groove.
In addition, the preferable scheme is that a cylinder fixing block is arranged on the drawing cylinder, and the positioning mechanism is arranged on the cylinder fixing block; the drawing cylinder pushes and pulls the positioning mechanism through the cylinder fixing block.
In addition, the preferable scheme is that the device also comprises a displacement sensor; the displacement sensor is fixedly connected with the bottom plate through the sensor fixing block and used for sensing the relative displacement between the contact pin and the sleeve cap.
In addition, the preferred scheme is that an alarm device is arranged on the displacement sensor; when the displacement sensor detects that the relative displacement exists between the contact pin and the sleeve cap, the alarm device gives an alarm for prompting.
In addition, the preferred scheme is that the device also comprises an electric control box; the clamping jaw cylinder and the drawing cylinder are communicated with the electric control box.
In addition, the preferable scheme is that the contact pin is of a cuboid structure, and grooves corresponding to the positions are arranged on two sides of the contact pin; the cap seals outside the pin.
In addition, the preferable scheme is that bulges corresponding to the grooves are arranged on the left thimble and the right thimble; when the contact pin is limited between the left thimble and the right thimble, the protrusion is buckled with the groove on the corresponding side.
According to another aspect of the present invention, there is provided a tension testing method for testing tension of an earphone plug by using the tension testing apparatus, the method including: inserting a contact pin of the earphone plug into a limiting block, and clamping the earphone plug into a limiting groove of the supporting mechanism after a sleeve cap of the earphone plug is limited outside the limiting block; a clamping jaw cylinder of the positioning mechanism drives a left pressure head and a right pressure head to move oppositely, and a contact pin is limited between a left thimble and a right thimble which are positioned on the left pressure head and the right pressure head; the drawing cylinder drives the positioning mechanism and the contact pin positioned in the positioning mechanism to move towards one side far away from the sleeve cap.
In addition, the preferable scheme is that in the process that the contact pin moves towards one side far away from the sleeve cap, the relative displacement between the contact pin and the sleeve cap is sensed through the displacement sensor, and when the relative displacement between the contact pin and the sleeve cap is detected, the alarm device gives an alarm prompt.
By utilizing the tension testing device and the testing method, the earphone plug is limited by the limiting mechanism after being limited by the supporting mechanism, then the plug is driven to move under the action of the tension mechanism, and the sleeve cap is limited in the limiting block, so that the manual intervention in the testing process can be avoided, and the testing precision can be improved; in addition, the relative displacement change between the contact pin and the sleeve cap is sensed through the displacement sensor, alarm reminding is timely carried out when the product is not in accordance with the requirements, the testing efficiency can be improved, and the testing consistency is ensured.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural diagram of an earphone plug according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a limiting block according to an embodiment of the invention;
FIG. 3 is an assembly diagram of an earphone plug and a stopper according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an overall structure of a tension testing apparatus according to an embodiment of the present invention;
FIG. 5 is a first diagram illustrating a partial structure of a tensile testing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a partial structure of a tensile testing apparatus according to an embodiment of the present invention;
FIG. 7 is a top view of a tensile testing apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic view of a positioning seat according to an embodiment of the present invention;
FIG. 9 is a flowchart of a pull test method according to an embodiment of the present invention.
Wherein the reference numerals include: the earphone comprises an earphone plug 1, a contact pin 11, a groove 12, a sleeve cap 13, a plug protective sleeve 14, a limiting block 2, a limiting hole 21, a positioning seat 3, a limiting groove 31, a positioning block 32, a positioning groove 33, a bottom plate 4, a left pressure head 51, a right pressure head 52, a left thimble 53, a right thimble 54, a clamping jaw cylinder 6, a cylinder fixing block 7, a drawing cylinder 8, a displacement sensor 9, a sensor fixing block 10 and a protective cover 15.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In order to describe the tensile testing apparatus and the testing method according to the embodiments of the present invention in detail, the following description will be made with reference to the accompanying drawings.
Fig. 1 shows a headphone plug structure according to an embodiment of the present invention; FIG. 2 illustrates a stop block structure according to an embodiment of the invention; fig. 3 shows a combined structure of an earphone plug and a stopper according to an embodiment of the present invention.
As shown in fig. 1 to 3, the earphone plug according to the embodiment of the present invention includes a pin 11 having a flat structure, a cap 13 and a plug protection sleeve 14 sequentially wrapping the pin 11; wherein, contact pin 11 is the cuboid structure, is provided with the recess 12 that the position corresponds respectively at the both sides of contact pin 11, and the cover cap 13 seals in the contact pin 11 outside to there is the stair structure with contact pin 11. The limiting block 2 is of a cuboid structure, a limiting hole 21 is formed in the limiting block 2, the size of the limiting hole 21 is larger than the size of a contact pin 11 of the earphone plug to be tested and smaller than the size of a sleeve cap 13 of the earphone plug, and therefore the contact pin 11 can penetrate through the limiting hole 21, and the sleeve cap 13 and a plug protective sleeve 14 are limited on the outer side of the limiting block 2. Because the plug protective sleeve 14 wraps the outer side of the sleeve cap 13, when testing whether the pulling force between the sleeve cap 13 and the contact pin 11 meets the requirement, whether the product is qualified can be judged by measuring the pulling force between the plug protective sleeve 14 and the contact pin 11.
Wherein, the spacing position of stopper to headphone plug can be adjusted through the size that changes spacing hole to the realization is to the tensile test between sleeve cap or plug protective sheath etc. and the contact pin. The pull test between the plug boot and the pin is used as an example in the following description.
FIG. 4 shows an overall structure of a tensile testing apparatus according to an embodiment of the present invention; fig. 5 and 6 respectively show a partial structure of a tensile testing apparatus according to an embodiment of the present invention from different angles; FIG. 7 illustrates a top view of a tensile testing apparatus according to an embodiment of the present invention; figure 8 shows a positioning socket structure according to an embodiment of the invention.
Referring to fig. 1 to 8, the tensile testing apparatus according to the embodiment of the present invention includes a base plate 4, a supporting mechanism fixed on the base plate 4, a tensile mechanism, a positioning mechanism fixed on the tensile mechanism, and an independently disposed limiting block 2; in the process of positioning the earphone plug 1, the earphone plug 1 is limited through the matching of the limiting block 2 and the supporting mechanism; wherein, a limiting hole 21 is arranged on the limiting block 2, and the size of the limiting hole 21 is larger than that of the pin 11 and smaller than that of the plug protective sleeve 14.
The supporting mechanism comprises a positioning seat 3 fixed on the bottom plate 4, a limiting groove 31 arranged at the end part of the positioning seat 3 and a positioning block 32 extending from the limiting groove 31 to one side of the positioning mechanism, the positioning block 32 forms a positioning groove 33 for accommodating the limiting block 2, the contact pin 11 passes through the limiting hole 21 of the limiting block 2 and then is limited in the limiting groove 31, and the limiting block 2 is limited in the positioning groove 33 and cannot move; the limiting groove 31 is mainly used for limiting the plug protective sleeve 14, after the plug protective sleeve 14 is fixed in the limiting groove 31, the limiting block 2 is clamped in the positioning groove 33, and the contact pin 11 located in the plug protective sleeve 14 extends to the outer side of the positioning block 32 so as to be locked and clamped by a subsequent positioning mechanism.
Wherein, block stopper 2 back in locating piece 32, stopper 2 all is restricted by locating piece 32 all around, when gripper cylinder 6 drives left pressure head 51 and right pressure head 52 motion, can only drive spacing contact pin 11 in the pressure head (including left pressure head 51 and right pressure head 52, the same down) and remove, and stopper 2 and keep off at stopper 2 and keep away from contact pin 11 plug protective sheath 14 of one side and all be in quiescent condition to the realization is to the tensile test between contact pin 11 and the plug protective sheath 14.
The positioning mechanism comprises a clamping jaw air cylinder 6 fixed on the tension mechanism through an air cylinder fixing block 7, a left pressure head 51 and a right pressure head 52 fixed on the clamping jaw air cylinder 6, the clamping jaw air cylinder 6 is used for controlling the left pressure head 51 and the right pressure head 52 to open or close, a left thimble 53 and a right thimble 54 corresponding to the left pressure head 51 and the right pressure head 52 are respectively arranged in the left pressure head 51 and the right pressure head 52, and a contact pin 11 positioned in the supporting mechanism is limited between the left thimble 53 and the right thimble 54, so that when the clamping jaw air cylinder 6 moves, the contact pin 11 is driven to move through the left pressure head 51 and the right pressure head 52.
Wherein, the cylinder fixing block 7 is arranged on the drawing cylinder 8, and the positioning mechanism is arranged on the cylinder fixing block 7; the drawing cylinder 8 linearly moves in the direction along the contact pin 11 by pushing and pulling the positioning mechanism through the cylinder fixing block 7, and the pulling direction of the drawing cylinder 8 is overlapped with the central axis direction of the earphone plug 1, so that the precision of a pulling force test is ensured, and the contact pin 11 is prevented from being stressed and deviated in the plug protective sleeve 14; it can be seen that the direction of movement of the gripper cylinder 6 (or the ram) is perpendicular to the direction of movement of the draw cylinder 8.
The pulling force mechanism comprises a pulling cylinder 8, the pulling cylinder 8 is used for driving the positioning mechanism to move towards one side far away from the sleeve cap and stretching the contact pin 11 fixed between the left contact pin 53 and the right contact pin 54, and the plug protection sleeve 14 fixedly connected with the contact pin 11 is limited at the position of the limiting block 2, so that the pulling force applied by the pulling cylinder 8 is the pulling force applied between the contact pin 11 and the plug protection sleeve 14, and when no position between the contact pin 11 and the sleeve cap 13 moves in the stress process, the product is shown to meet the requirement of a pulling force test.
Specifically, the left pressure head 51 is of a C-shaped structure, a raised left thimble 53 is arranged in the middle of the left pressure head 51, and a left clamping groove arranged around the left thimble 53 is formed between the left thimble 53 and the left pressure head 51; the right pressure head 52 and the left pressure head 51 are symmetrically arranged, a raised right thimble 54 is arranged in the middle of the right pressure head 52, a right clamping groove surrounding the right thimble 54 is formed between the right thimble 54 and the right pressure head 52, when the left pressure head 51 and the right pressure head 52 are driven by the clamping jaw air cylinder 6 to move to be in contact with each other, the left clamping groove and the right clamping groove form a return-shaped groove matched with the positioning block 32, the contact pin 11 is limited between the left thimble 53 and the right thimble 54, and the positioning block 32 for fixing the contact pin 11 is accommodated in the return-shaped groove.
In one embodiment of the present invention, the left pin 53 and the right pin 54 are provided with protrusions corresponding to the concave grooves 12 of the pin 11, and when the pin 11 is limited between the left pin 53 and the right pin 54, the protrusions and the corresponding concave grooves 12 are mutually buckled and limited to ensure that the pin 11 is limited and clamped without damaging the pin 11.
In order to accurately detect the relative movement between the contact pin 11 and the plug protective sleeve 14 and improve the precision of the tension test, the tension test device provided by the invention further comprises a displacement sensor 9, the displacement sensor 9 is fixedly connected with the bottom plate 4 or a support of the drawing cylinder 8 through a sensor fixing block 10, and whether the relative displacement between the contact pin 11 and the sleeve cap 13 changes or not is sensed through the displacement sensor 9.
Because the spacing pressure head of fixing at clamping jaw cylinder 6 of contact pin 11, and plug protective sheath 14 is motionless, can judge whether contact pin 11 produces relative displacement with plug protective sheath 14 through the position change that detects clamping jaw cylinder 6, for example, displacement sensor sends test laser signal and receives feedback laser signal to clamping jaw cylinder, through test laser quotation mark and reflection laser signal, judge whether clamping jaw cylinder takes place the position change relative displacement sensor, when detecting that there is relative displacement between the two, can confirm that the contact pin takes place relative displacement with the plug protective sheath under the drive of pressure head, contact pin and plug protective sheath are not conform to the tensile test requirement this moment, earphone plug is unqualified.
Because the relative displacement between the contact pin 11 and the plug protective sleeve 14 is very small, the test result is difficult to be recognized by the naked eyes of an operator, in another specific implementation manner of the embodiment of the invention, an alarm device, such as a buzzer or an alarm lamp, is arranged on the sensor, and when the displacement sensor 9 detects that the relative displacement exists between the contact pin 11 and the plug protective sleeve 14, the alarm device can be used for alarming and reminding, so that the operator can count the tensile test result.
In addition, the tension testing device of the embodiment of the invention further comprises an electrical control box (not shown in the figure) connected with the clamping jaw air cylinder 6 and the drawing air cylinder 8, the action time and the action force of the clamping jaw air cylinder and the drawing air cylinder can be controlled through the electrical control box, and when tension testing is carried out on earphone plugs with different shapes or different testing requirements, the cylinders (including the drawing air cylinder and the clamping jaw air cylinder) can be controlled through the electrical control box to be started, and the tension of the drawing air cylinder or the clamping force of the clamping jaw air cylinder and the like can be adjusted.
In order to prevent pollution particles in the environment from entering the drawing cylinder 8 and affecting the normal operation of the cylinder, a protective cover 15 can be arranged on the outer side of the drawing cylinder 8, and the protective cover 15 is fixedly connected with the bottom plate 4, so that external impurities can be isolated, the safe operation of workers can be ensured, and the safety test is ensured; in a similar way, a shell structure can be arranged on the outer sides of the clamping jaw cylinder, the left pressure head and the right pressure head, so that the clamping jaw cylinder, the left pressure head and the right pressure head are isolated and protected.
Corresponding to the tension testing device, the invention also provides a tension testing method, which is used for performing tension testing on the contact pin and the sleeve cap of the earphone plug by adopting the tension testing device.
Specifically, fig. 9 shows a flow of a tensile testing method according to an embodiment of the present invention.
As shown in fig. 9, the tensile testing method of the embodiment of the present invention includes the following steps:
s910: the contact pin of the earphone plug penetrates into the limiting block, the sleeve cap of the earphone plug is limited outside the limiting block, and the earphone plug is clamped into the limiting groove of the supporting mechanism.
The support mechanism comprises a positioning seat, a limiting groove arranged at the end part of the positioning seat and a positioning block extending from the limiting groove to one side of the positioning mechanism, the positioning block forms a positioning groove for accommodating the limiting block, the contact pin passes through a limiting hole of the limiting block and then is limited in the limiting groove, and the limiting block is limited in the positioning groove and cannot move; wherein, the spacing groove mainly used carries on spacingly to the plug protective sheath, fixes the plug protective sheath at the spacing groove after, and the stopper card is in the constant head tank, and the contact pin that is located in the plug protective sheath then extends to the outside of locating piece to it is tight to be pressed from both sides by subsequent positioning mechanism locking.
S920: the clamping jaw air cylinder of the positioning mechanism drives the left pressure head and the right pressure head to move oppositely, and the contact pin is limited between the left thimble and the right thimble which are positioned on the left pressure head and the right pressure head.
Wherein, open or merge through left pressure head of clamping jaw cylinder control and right pressure head, be provided with the left thimble and the right thimble that the position corresponds in left pressure head and right pressure head respectively, the contact pin that is located the supporting mechanism is spacing between left thimble and right thimble to when clamping jaw cylinder removes, drive the contact pin through left pressure head and right pressure head and remove, and the stopper of fixed contact pin is then spacing in the locating block, and the cover cap (plug protective sheath) of being connected with the contact pin is spacing in stopper department.
S930: the drawing cylinder drives the positioning mechanism and the contact pin positioned in the positioning mechanism to move towards one side far away from the sleeve cap.
Wherein, the pulling force size that the contact pin received can set up through drawing the cylinder, retreats the in-process at the clamping jaw cylinder, and the cover cap is by stopper bumping post, and when there is not relative displacement between contact pin and the cover cap, the product accords with the test requirement, and whole test action is accomplished. In the process that the contact pin moves towards one side far away from the sleeve cap, the relative displacement between the contact pin and the sleeve cap is sensed through the displacement sensor, and when the displacement sensor detects that the relative displacement exists between the contact pin and the sleeve cap, the alarm device can give an alarm to remind a user.
It should be noted that the embodiments of the tensile testing method according to the embodiments of the present invention are similar to the embodiments of the tensile testing apparatus, and reference may be made to the description of the embodiments of the apparatus for related parts, which is not repeated herein.
According to the tension testing device and the testing method provided by the invention, the contact pin and the sleeve cap can be respectively positioned, so that the contact pin and the sleeve cap are ensured not to move relative to the testing device in the stretching process, and the testing efficiency and consistency of products can be improved.
The tensile testing apparatus and the testing method according to the present invention are described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications can be made to the tensile testing apparatus and the testing method provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (8)
1. A tension testing device is characterized by comprising a bottom plate, a supporting mechanism, a positioning mechanism, a tension mechanism and a limiting block, wherein the supporting mechanism, the positioning mechanism, the tension mechanism and the limiting block are fixed on the bottom plate;
a limiting hole is formed in the limiting block, and the size of the limiting hole is larger than the size of a contact pin of the earphone plug to be tested and smaller than the size of a sleeve cap of the earphone plug; the contact pin is of a cuboid structure, and grooves corresponding in position are formed in two sides of the contact pin; the sleeve cap is sealed outside the contact pin;
the support mechanism comprises a positioning seat fixed on the bottom plate, a limiting groove arranged at the end part of the positioning seat and a positioning block extending from the limiting groove to one side of the positioning mechanism, the positioning block forms a positioning groove for accommodating the limiting block, the contact pin penetrates through the limiting hole and then is limited in the positioning groove, and the limiting block is limited in the positioning block;
the positioning mechanism comprises a clamping jaw air cylinder, a left pressure head and a right pressure head which are fixed on the clamping jaw air cylinder, a left thimble and a right thimble which correspond to each other in position are respectively arranged in the left pressure head and the right pressure head, a left clamping groove which is arranged around the left thimble is arranged on the left pressure head, a right clamping groove which is arranged around the right thimble is arranged on the right pressure head, and a contact pin in the supporting mechanism is limited between the left thimble and the right thimble;
when the left pressing head and the right pressing head move to be in contact with each other, the left clamping groove and the right clamping groove form a return-shaped groove matched with the positioning block, and the positioning block is limited in the return-shaped groove;
the tension mechanism comprises a drawing cylinder, wherein the drawing cylinder is used for driving the positioning mechanism and a contact pin fixed in the positioning mechanism to move towards one side far away from the sleeve cap.
2. The tensile testing apparatus of claim 1,
the drawing cylinder is provided with a cylinder fixing block, and the positioning mechanism is arranged on the cylinder fixing block;
the drawing cylinder pushes and pulls the positioning mechanism through the cylinder fixing block.
3. The tension testing device according to claim 1, further comprising a displacement sensor;
the displacement sensor is fixedly connected with the bottom plate through a sensor fixing block and used for sensing the relative displacement between the contact pin and the sleeve cap.
4. The tensile testing apparatus of claim 3,
an alarm device is arranged on the displacement sensor;
when the displacement sensor detects that the relative displacement exists between the contact pin and the sleeve cap, the alarm device gives an alarm.
5. The tension testing device according to claim 1, further comprising an electrical control box;
the clamping jaw air cylinder and the drawing air cylinder are communicated with the electric control box.
6. The tensile testing apparatus of claim 1,
the left thimble and the right thimble are provided with bulges corresponding to the grooves;
when the contact pin is limited between the left thimble and the right thimble, the protrusion is buckled with the groove on the corresponding side.
7. A tension test method for performing a tension test on an earphone plug using the tension test apparatus according to any one of claims 1 to 6, the method comprising:
inserting a contact pin of the earphone plug into a limiting block, and clamping the earphone plug into a limiting groove of a supporting mechanism after a sleeve cap of the earphone plug is limited outside the limiting block;
a clamping jaw air cylinder of the positioning mechanism drives a left pressure head and a right pressure head to move oppositely, and the contact pin is limited between a left thimble and a right thimble which are positioned on the left pressure head and the right pressure head;
the drawing cylinder drives the positioning mechanism and the contact pin positioned in the positioning mechanism to move towards one side far away from the sleeve cap.
8. The tension testing method as set forth in claim 7, wherein during the movement of the contact pin to a side away from the cap,
the relative displacement between the contact pin and the sleeve cap is sensed through the displacement sensor, and when the relative displacement between the contact pin and the sleeve cap is detected, an alarm device is used for giving an alarm prompt.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108540917B (en) * | 2018-06-12 | 2020-11-24 | 歌尔股份有限公司 | Earphone magnetic force detection device |
| CN110346220A (en) * | 2019-08-19 | 2019-10-18 | 迈得医疗工业设备股份有限公司 | Detection device |
| CN111896378A (en) * | 2020-08-06 | 2020-11-06 | 亳州联滔电子有限公司 | Connector tension testing device |
| CN114062121B (en) * | 2021-11-19 | 2024-03-08 | 东莞高美玩具有限公司 | Quality detection device and detection method for toy production |
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| CN201105323Y (en) * | 2007-09-06 | 2008-08-27 | 宜宾天工机械股份有限公司 | Turning automatic setting gauge suitable for NC machine tool |
| CN102818669B (en) * | 2011-06-08 | 2014-12-17 | 泰桦工业器材公司 | Testing device and testing method for button pull |
| CN204977301U (en) * | 2015-09-11 | 2016-01-20 | 歌尔声学股份有限公司 | Equipment of loosing core |
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| KR101170144B1 (en) * | 2011-11-29 | 2012-07-31 | 대경테크 주식회사 | Test piece clamping device of extensometer |
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| JP2016153747A (en) * | 2015-02-20 | 2016-08-25 | 株式会社近畿開発 | Tightening force measurement device of pc steel rod unit |
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