CN102141492B - Card bending test machine and test method - Google Patents

Abstract

The invention discloses a card bending test machine which comprises a machine base, wherein a driving unit is arranged on the machine base, a transmission mechanism is connected onto the driving unit, a bending mechanism is connected onto the transmission mechanism, a clamp for clamping a card is oppositely arranged on the bending mechanism, and the clamp can bend the card through the driving of the bending mechanism. The structure not only greatly lightens the labor intensity of manual bending and has high efficiency, but also tests the playing cards by simulating the stress mode which is most close to the actual use (shuffling), and the test result is accurate. The invention also discloses a card bending test method, which comprises the steps of correcting the clamp to a balance position, installing the card, setting the bending times and the bending frequency, starting a machine and analyzing the test result.

Description

A kind of playing card bending testing machine and testing method

technical field

The invention relates to a device and a method for testing the flexibility of sheet materials such as cardboard, in particular to a bending test machine and a method for testing the flexibility of playing cards.

Background technique

Poker is a common stationery item, which usually consists of 54 rectangular playing cards of different suits. Poker cards need to be shuffled during use. The commonly used shuffling method is as follows: the cards are divided into two parts, and the shuffler takes one part in each hand, presses one end of the playing card with his thumb, and buckles the playing card with the other four fingers. The other end of the card is flipped by the elasticity of the card and the pressure exerted by the thumb on it, and interleaved with the card in the other hand to achieve the purpose of shuffling. Repeated shuffling is the main factor causing damage to playing cards. Therefore, the flexibility of playing cards is an important indicator of the quality of playing cards. Poker cards with high flexibility are not easy to damage and have a long life, and flexibility also directly or indirectly affects elasticity, Stiffness and other properties of playing cards using feel. Through the flexibility test, the defects and deficiencies of the product can be found, so as to improve and improve the quality of the product.

Testing the flexibility of poker is usually done by repeatedly simulating the bending during shuffling. There should be no tension during the bending process, and the object of investigation of the bending is the crease rather than the break. At present, the common bending instrument in China is the MIT bender that meets the requirements of GB/T 457-2008, which does not meet the requirements of playing cards. Therefore, the bending test of playing cards was mainly carried out manually in the past. Manual testing has the problems of poor repeatability of operations and large differences among personnel, so the accuracy of the measured data is not high, the effect is not good, and it is not objective enough. Manual testing also has disadvantages such as high labor intensity and slow testing speed.

Contents of the invention

In order to overcome the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a bending tester capable of testing the durability and flexibility of playing cards.

Another technical problem to be solved by the present invention is to provide a simple and accurate testing method for testing the durability and flexibility of playing cards.

The technical solution adopted by the present invention to solve its technical problems is:

The playing card bending testing machine is characterized in that it includes a machine base, a drive unit is installed on the machine base, a transmission mechanism is connected to the drive unit, a bending mechanism is connected to the transmission mechanism, and a card holding card is relatively arranged on the bending mechanism. A jig, and the jig can bend the playing cards driven by the bending mechanism.

The transmission mechanism includes a turntable fixed to the motor, a first link is eccentrically pivoted on the turntable, and the first link is pivotally connected to the bending mechanism.

An adjustment block and an adjustment groove are provided on the turntable, the adjustment block is installed in the adjustment groove, and a limit boss is arranged on the wall of the adjustment groove, the adjustment block is fixed on the turntable through a connecting fastener, and the first connecting One end of the rod is pivotally connected with the adjusting block.

Both ends of the first connecting rod are respectively provided with a first adjusting joint and a second adjusting joint which are threadedly connected with the first connecting rod, an adjusting nut is provided on the first connecting rod, and the first adjusting joint and the second adjusting joint are respectively connected with the The adjustment block and the bending mechanism are pivotally connected.

The bending mechanism includes a second connecting rod pivotally connected to the machine base and a sliding seat arranged on the machine base and capable of linear motion. The sliding seat is provided with a first chute, and the clamp is arranged on the first In the chute, and the clamp is fixedly connected with the second connecting rod.

The base is provided with a second chute, the slide seat is arranged in the second chute, the second chute wall is provided with a rail bar, and the slide seat is provided with a third chute, and the guide rail bar is installed on the In the third chute.

A pivot is arranged on the base, and the second connecting rod is connected with the pivot through a bearing.

The clamp is provided with a slot for holding playing cards.

An inductor capable of sensing the fixture and a counter connected with the inductor are arranged on the base.

A governor capable of controlling the rotational speed of the drive unit is provided on the base.

A card bending test method is characterized in that: it completes the test according to the following steps:

1. Correction, press the jog button on the bending tester to move the fixture to the balance position,

2. Installation and setting, fix the two ends of the card to be tested on the fixture, set the number of bending times of the card through the counter, the value is 40-60 times, set the bending frequency value through the governor, its The value is 80-95 times/min,

3. Start, press the start button to start the bending process,

4. Analysis. After the bending process is completed, the cards are manually observed to obtain the test results of this test.

In the second step: the number of times of card bending is set to 50 times, and the value of card bending frequency is set to 85 times/min.

The beneficial effects of the present invention are: the present invention drives the transmission mechanism through the driving unit installed on the machine base, drives the bending mechanism through the transmission mechanism, and the bending mechanism drives the fixture for fixing the playing cards, thereby bending the playing cards. The labor intensity of manual bending is reduced, and the efficiency is high, and the present invention tests the playing cards by simulating the stress mode closest to the actual use (during shuffling), and the test results are accurate.

This test method includes the process of correcting the fixture to the balance position, installing the card, setting the number of bending times and bending frequency, starting the machine, and analyzing the test results. The above method is simple and effective, and the results obtained through the above process can be accurately analyzed. The degree of durability and flexibility of playing cards will greatly help the improvement of products.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is the overall schematic diagram of the present invention;

Fig. 2 is the overall sectional view of the present invention;

Fig. 3 is an explosion diagram of the present invention;

Fig. 4 is an overall view of the slider.

Detailed ways

Referring to Fig. 1 to Fig. 4, the present invention discloses a playing card bending test machine, which includes a machine base 1, on which a drive unit 2 is installed, and a transmission mechanism is connected to the drive unit 2, and a bending machine is connected to the transmission mechanism. mechanism, the bending mechanism is oppositely provided with a jig 3 for holding cards, and the jig 3 can bend the playing cards driven by the bending mechanism.

As shown in the figure, in this embodiment, the transmission mechanism includes a turntable 4 fixed to the motor, and a first link 5 is eccentrically pivoted on the turntable 4, and the first link 5 is pivotally connected to the bending mechanism. Further, the turntable 4 is provided with an adjustment block 6 and an adjustment groove 7, the adjustment block 6 is installed in the adjustment groove 7, and a limit boss 8 is arranged on the wall of the adjustment groove 7, and the adjustment block 6 is connected by a fastener Fixed on the turntable 4. The setting of the above structure is to facilitate the adjustment of the position in the adjustment groove 7 of the adjustment block 6. The connecting fasteners in this example are hexagon socket screws. When the screws are loosened, the position of the adjustment block can be moved along the adjustment groove 7 , thereby realizing the adjustment of the bending angle of the playing cards, the closer the adjusting block 6 is to the end of the adjusting groove 7, the greater the bending angle of the playing cards. Of course, the above is only a specific embodiment of the present invention, and the above-mentioned structure can also adopt adjustment screw holes with different radii on the turntable 4, and cooperate with screw fixing to adjust the position of the adjustment block 6 on the turntable 4. Adjust the bending angle of the card. Furthermore, the two ends of the first connecting rod 5 are respectively provided with a first adjusting joint 10 and a second adjusting joint 11 which are threadedly connected with the first connecting rod 5, the first connecting rod 5 is provided with an adjusting nut 12, and the first adjusting joint 10 and the second adjustment joint 11 are pivotally connected to the adjustment block 6 and the bending mechanism respectively. The purpose of the above structure is to adjust the length of the first connecting rod 5, so as to adjust the bending angle of playing cards, rotate the first connecting rod 5, and make the first connecting rod 5 adjust from the first adjusting joint 10 or the second The length of the first connecting rod 5 can be changed by withdrawing or entering into the screw hole of the joint 11, and the rotating adjusting nut 12 is locked, thereby realizing the adjustment of the bending angle of the playing cards. Because the adjustment range of the structure is small and the adjustment precision is high, it serves as an auxiliary adjustment function for the adjustment of the bending angle. In the present invention, the first adjusting joint 10 and the second adjusting joint 11 use fish-eye joints. The fish-eye joints are common parts, and the fish-eye joints have a certain centering effect, so when the parts are not well assembled or processed, they can be adjusted. Self-aligning, so that the relevant parts are not easily damaged.

As shown in the figure, the bending mechanism includes a second connecting rod 13 pivotally connected to the machine base 1 and a sliding seat 14 arranged on the machine base 1 and capable of linear motion. The sliding seat 14 is provided with a first The chute 15 , the clamp 3 is arranged in the first chute 15 , and the clamp 3 is fixedly connected with the second connecting rod 13 , and the second adjusting joint is pivotally connected with the sliding seat 14 . Further, the base 1 is provided with a second chute 16, the slide seat 14 is located in the second chute 16, the second chute 16 wall is provided with a guide rail bar 17, and the slide seat 14 is provided with a third chute 18 , the rail bar 17 is installed in the third slide groove 18 . The second chute 16 can play the function of guiding the movement of the sliding seat 14. The guide rail bar 17 installed in the third chute 18 not only plays the role of guiding the sliding seat 14, but also slides when the guide rail bar 17 is stuck in the third chute 18. Seat 14 can not jump out from the chute when sliding. Furthermore, a pivot 19 is connected to the base 1, and the second connecting rod 13 is connected to the pivot 19 through a bearing. The above-mentioned structure is a preferred structure of the present invention. In this example, the pivot shaft 19 is fixed on the base 1 by connecting fasteners, and the two second connecting rods 13 are respectively connected to the pivot shaft 19 through bearings, and rotate through the bearings to avoid In order to generate sliding friction, the friction between parts is increased.

As shown in the figure, the base 1 is provided with an inductor (not shown) capable of sensing the clamp 3 and a counter (not shown) connected to the sensor, when the clamp 3 is on the second connecting rod 13 When it is driven to make a bending movement, every time it is bent, it will pass through the sensing area in front of the sensor once. At this time, the sensor can sense it, and then the feedback signal is sent to the counter connected to the sensor to count the amount of bending. The number of times, of course, the above-mentioned structure is only a preference of the present invention and does not constitute a limitation to the present invention, and the sensor can also realize counting by sensing the second connecting rod 13 or the sliding seat 14 . In addition, a speed governor (not shown in the figure) capable of controlling the rotational speed of the drive unit 2 is provided on the machine base 1 , through which the infinitely variable speed adjustment of the motor can be realized, thereby controlling the frequency of bending.

As shown in the figure, in this embodiment, the jig 3 is provided with a slit 21 , and the cards are held in the slit 21 .

The working process of the present invention is as follows. Firstly, the two ends of the playing cards are inserted into the gap respectively, the number of bendings is set through the counter and the bending frequency is set through the governor, the angle of bending is adjusted by adjusting the position of the block, and the machine is started. , the motor rotates, the transmission drives the sliding seat to slide, and the sliding seat drives the fixture to move. Keep facing the center of the circle to bend the card, so that the force exerted by the fixture on the sample and the deformation of the sample meet the requirements of no-tension bending, and achieve the force process closest to the actual use of the card, so as to obtain accurate results.

The invention also discloses a card bending test method, which includes the following steps,

1. Correction, press the jog button on the bending testing machine to move the fixture to the balance position. The balance position mentioned in this method refers to the center axis of the two-column fixture and the second connecting rod when it rotates around the machine base. The position of the fixture when the three pivot axes are coplanar,

2. Installation and setting, fix the two ends of the card to be tested on the fixture, set the number of bending times of the card through the counter, set the value to 50 times, set the bending frequency value through the governor, its The value is set to 85 beats/min,

3. Start, press the start button to start the bending process,

4. Analysis: Take out the card after the bending process is completed, and manually observe the card to see if there are creases, cracks, or even breaks on the tested card, and then the test result of this test is obtained.

The above are only illustrations and descriptions of some preferred embodiments of the present invention, but the implementation of the present invention is not limited by the above embodiments, as long as they achieve the technical effects of the present invention by basically the same means, they all belong to the present invention scope of protection.

Claims (8)

1. playing cards bending tester, it is characterized in that: comprise support (1), driver element (2) is installed on the support (1), driver element is connected with gear train on (2), be connected with bending mechanism on the gear train, be relatively set with the anchor clamps (3) that hold playing cards on the bending mechanism, and the drive of these anchor clamps (3) by bending mechanism can make the playing cards bending; Described gear train comprises the rotating disk (4) fixing with motor, the upper off-centre of rotating disk (4) is articulated with first connecting rod (5), and first connecting rod (5) articulates with bending mechanism, described bending mechanism comprises the second connecting rod (13) that articulates with support (1) and is arranged on the support (1), and can do straight-line slide (14), slide (14) is provided with the first chute (15), described anchor clamps (3) are arranged in the first chute (15), and these anchor clamps (3) are fixedly connected with second connecting rod (13), described first connecting rod (5) is provided with second and regulates joint (11), and described slide (14) and second is regulated joint (11) and articulated.

2. a kind of playing cards bending tester according to claim 1, it is characterized in that: described rotating disk (4) is provided with regulating block (6) and regulating tank (7), described regulating block (6) is installed in the regulating tank (7), regulating tank (7) wall is provided with positive stop lug boss (8), this regulating block (6) is fixed on the rotating disk (4) by connecting securing member, and an end of described first connecting rod (5) and regulating block (6) articulate.

3. a kind of playing cards bending tester according to claim 2, it is characterized in that: described first connecting rod (5) one ends are provided with the first adjusting joint (10) that is threaded with first connecting rod (5), and the other end of first connecting rod (5) is provided with the second adjusting joint (11) that is threaded with first connecting rod (5), first connecting rod (5) is provided with setting nut (12), first regulates joint (10) articulates with regulating block (6), and the second adjusting joint (11) articulates with bending mechanism.

4. a kind of playing cards bending tester according to claim 1, it is characterized in that: described support (1) is provided with the second chute (16), described slide (14) is located in the second chute (16), the second chute (16) wall is provided with guide rail bar (17), slide (14) is provided with the 3rd chute (18), and this guide rail bar (17) is installed in the 3rd chute (18).

5. a kind of playing cards bending tester according to claim 1, it is characterized in that: described support (1) has been provided with pivot (19), and described second connecting rod (13) is connected with pivot (19) by bearing.

6. a kind of playing cards bending tester according to claim 1, it is characterized in that: described anchor clamps (3) are provided with the slit (21) that holds playing cards.

7. a kind of playing cards bending tester according to claim 1 is characterized in that: described support (1) is provided with the inductor that can respond to anchor clamps (3) and the counter that links to each other with inductor.

8. a kind of playing cards bending tester according to claim 1, it is characterized in that: described support (1) is provided with the speed regulator that can control driver element (2) rotating speed.

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