JPH0989757A - Weight lifting device in impact testing machine and impact testing machine equipped with this weight lifting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a weight lifting device that automates lifting and dropping of weights, and an impact tester equipped with the weight lifting device. [Structure] A vertical guide member is provided upright, and a slider that guides and moves up and down in response to a driving force of a drive source is provided on the vertical guide member, and a weight mounting member that can move forward and backward is provided on the slider. A weight lifting device is constructed in which a weight is placed on the weight placing member and the weight is moved up and down, and a pedestal for placing a test sheet is provided and an impact punch is provided on the pedestal. An impact test apparatus is constructed by supporting the striking punch on a support table provided on the receiving table so as to be vertically movable, and erecting a tower-shaped guide member that guides the weight so that the weight can be moved vertically. The weight lifting device is provided adjacent to the impact tester to configure the impact tester.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impact tester called a sheet impact tester used for evaluating the adhesion strength of coating films of various sheets against impact, or for evaluating the point impact strength of plastics. And a weight lifting device used in this impact tester.

[0002]

2. Description of the Related Art A DuPont impact tester is conventionally known as an impact tester called a sheet impact tester. This hitherto known impact tester is provided with an impact punch on a pedestal on which a test sheet is placed, and a weight can be vertically moved just above the impact punch and can be stopped at a number of fixed positions. The locking pin is provided so that it can be moved back and forth, and the weight of the weight that matches the purpose of the test is raised to a height that also matches the purpose of the test.At that position, the weight is stopped by the locking pin and the locking pin is removed. By doing so, the weight was dropped onto the impact punch placed on the test sheet, and the test sheet was impacted to be tested.

[0003]

In the above-mentioned known DuPont impact tester, the operator himself manually lifts the weight and also evaluates the impact test. Testing a large number of test sheets as in departments such as quality control is a very simple task, but there is a problem that the physical burden on the operator is considerable, and physical fatigue There was also the problem of lack of safety as a result. In order to solve the above problems, the present invention provides a novel weight lifting device that automatically lifts and drops weights, and an object of the present invention is to provide a new impact tester equipped with this weight lifting device. To do.

[0004]

In order to achieve the above object, the weight lifting device of the present invention is provided with a vertical guide member standing upright, and the vertical guide member is vertically guided by receiving the driving force of a drive source. A slider is provided, and a weight mounting member that can move forward and backward is provided on the slider.
A weight is placed on the weight placing member and the weight is moved up and down. Similarly, the impact tester of the present invention has a pedestal on which a test sheet is placed, a perforation punch is provided on the pedestal, and the perforation punch is supported by a support table provided on the pedestal so as to be vertically movable. , A shock-testing device is constructed by erecting a tower-shaped guide member for guiding the weight so that the weight can be moved up and down, and a vertical guide member is erectly provided, and a drive source is driven by the vertical guide member. A slider for guiding up and down in response to a force is provided, and a weight placing member that can move forward and backward is provided on the slider, and a weight is placed on the weight placing member to move the weight up and down. A weight lifting device is provided adjacent to the impact tester.

It is desirable that a screw shaft which is rotated by a driving force of a drive source is erected, and a nut which is vertically moved by the rotation thereof is screwed on the screw shaft, and the slider is coupled and integrated with the nut. A rotation speed detector is connected to the end of the screw shaft of the weight lifting device, the rotation speed of the screw shaft is detected by this rotation speed detector, and the moving distance of the weight mounting member is calculated by the pitch of the screw shaft. It is good to be configured. It is also possible to provide an endless circulating member which is circulated between the rotating members located above and below and which operates in circulation, and to connect the slider to the endless circulating member. The vertical guide member may be composed of a cylinder, and the slider may be composed of a piston that moves up and down in the cylinder by fluid pressure. Similarly, the weight mounting member of the weight lifting device can be rotated by 90 degrees between a horizontal position and a vertical position, and when the weight mounting member hits the weight when the weight mounting member descends, the weight mounting member automatically moves vertically from the horizontal position. It is effective in terms of safety to rotate in the direction.

The weight lifting device is arranged so as to be shifted laterally from the position immediately after the impact test device, and the slider of the weight lifting device is provided with a support plate protruding laterally immediately after the impact test device. Since the weight mounting member is provided on the support plate so as to be movable back and forth, it is desirable that the long test sheets can be sequentially tested and the tested test sheets can be sent out to the rear. Further, since a test sheet holding plate having a through hole through which the impact punch can be passed is provided on the pedestal of the impact test device, the test sheet is stabilized and the test sheet is prevented from scattering. It is preferable because a stable test can be performed.
Furthermore, a knob that can move up and down is provided at the lower end of the tower-shaped guide member of the above-mentioned impact test device, and a supporting tongue projecting rearward is provided on this knob, and this supporting tongue is provided at the upper end expanded portion of the impact punch. Since the impact punch is moved up and down by inserting it downward and operating the knob up and down, the operation of the impact punch is easy and safe.

In the weight lifting device of the present invention, the slider moves up and down in response to the driving force of the driving source. Therefore, the weight placing member provided on the slider also moves up and down, and the weight placed on the weight placing member also automatically moves up and down. In the impact tester of the present invention in which the weight lifting device is configured adjacent to the impact tester, the weight for the impact test is not manually lifted but is automatically lifted and the weight mounting member is retracted, The weight falls. Therefore, in the impact tester of the present invention, the vertical operation of the weight could be automated.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail with reference to the embodiments shown in the drawings. An impact tester including the weight lifting device of the present invention is configured by combining the weight lifting device of the present invention and a known impact testing device. A shown in FIGS. 1 to 3 is a weight lifting device and B is a weight lifting device. Is an impact test device. Both the weight lifting device A and the impact test device B are provided upright on the upper substrate 2 of the main body base 1 of the impact tester of the present invention. This body base 1
Is composed of the upper substrate 2, the lower substrate 3, and a spacer 4 which forms a space between the upper and lower substrates.

FIGS. 1 to 3 show a preferred embodiment in which a slider which moves up and down is integrally connected to a nut which is screwed onto a screw shaft. Reference numeral 5 in the figure denotes a screw shaft which constitutes the weight lifting device A, which is vertically provided on the upper substrate 2 of the main body base 1 and is coupled to a drive motor 6 provided below the upper substrate 2. Are connected via. A rotation speed detector 8 composed of a rotary encoder is also connected to the upper end of the screw shaft 5 via a coupling 7. A nut 9 is screwed on the screw shaft 5, and the nut 9 is fitted to a ridge guide 11 provided on a vertical guide member 10 having a U-shaped cross section so as to cover the screw shaft 5. The slider 12 guided by the above is integrally provided, and by this structure, the slider 12 is moved up and down by rotating the screw shaft 5. Then, the rotation number of the screw shaft 5 is detected by the rotation number detector, the moving distance of the slider 12 is calculated based on the pitch of the screw shaft 5, and the movement of a weight mounting member, which will be described later, connected to the slider 12 is moved. The distance is calculated.

The slider 12 has a vertical guide member 1
A mounting plate 13 is fixedly provided on the open side of 0, and a supporting plate 14 is provided on the mounting plate 13 so as to project in the horizontal direction. An air cylinder 15 is mounted and fixed on the support plate 14, and a weight mounting member 16 is provided on the air cylinder 15 so as to be able to move forward and backward. The weight mounting member 16 is positioned immediately after the impact test apparatus B described later. The weight of the impact test apparatus B is placed in the advanced state. This support plate 1
4 and the structure of the air cylinder 15 and the weight mounting member 16, the weight lifting device A is disposed laterally from the position immediately after the impact test device B, as clearly shown in FIGS. . The weight mounting member 16 is
A support 1 provided to be movable back and forth by an air cylinder 15.
As shown in FIG. 9, the weight supporting member 16 is pivotally supported on the shaft 7 and can rotate 90 degrees between a horizontal position and a vertical position. Although it is mounted and raised, and lowered at the retracted position, when the weight is dropped at the advanced position, the weight placing member abuts on the dropped weight, and the weight placing member 16 moves about the shaft 18 about 90 °. The weight mounting member 1
6 and the weight are not damaged. The weight mounting member 16 may be a simple flat plate, but is preferably made of a fork. An electromagnetic solenoid may be used instead of the air cylinder 15.

The impact test apparatus B shown in FIGS. 1 to 3 has the same structure as a known DuPont impact test apparatus. That is, reference numeral 20 in the drawing denotes a pedestal on which the test sheet C is placed, which is provided on the upper substrate 2 of the main body base 1 and has a concave portion 21 formed at the center position of the upper portion into which a lower end of a hitting punch described later is inserted. There is. A gate-shaped support base 22 is provided on the upper substrate 2 so that its horizontal upper portion is located directly above the receiving base 20, and a hitting punch 23 is penetrated through a through hole formed in the center of the support base 22. It is supported so that it can move up and down.
The lower end of the hammer punch 23 is locked to the pedestal 2
It is positioned so as to enter the zero recess 21.

A tower-shaped guide member 24 having a U-shaped cross section is opened upright on the support base 22, and convex guides 25, 25 are provided on the left and right sides of the guide member 24. Weight 26 that can be moved up and down by being guided
Is provided. The weight mounting member 16 of the weight lifting device A is placed on the weight 26 so as to move up and down, and the weight mounting member 16 is retracted at a position where the weight 26 is raised to strike the weight 26 with a punch. It drops on 23 and is hit.

A test sheet pressing plate 27 is provided between the receiving table 20 and the supporting table 22, and the test sheet pressing plate 27 is provided.
Thus, the test sheet C is stably placed on the pedestal 20. Therefore, this test sheet holding plate 27
A through hole 28 penetrating the impact punch 23 is formed in the center of the hole. Further, the test sheet pressing plate 27 is supported by the loading / unloading rods 30, 30 of the air cylinders 29, 29 mounted under the upper substrate 2 and is vertically movable. An electromagnetic solenoid may be used instead of the air cylinders 29, 29.

As shown in FIGS. 7 and 8, a knob 31 is provided at the lower end position of the tower-shaped guide member 24. The knob 31 is provided so as to be vertically movable by being guided by two guide rods 32, 32 provided on the front surface of the tower-shaped guide member 24, and a winding spring 33 wound around the guide rods 32, 32. Three
It is pressed downward by 3. Also, this pick 31
A supporting tongue 34 protruding rearward is provided on the rear side of the striking punch 23. The supporting tongue 34 is inserted and locked under the upper-diameter expanded portion 35 of the striking punch 23. The punch 23 is moved up and down.

As shown in FIG. 1, in the impact tester of the present invention, an impact test device B is exposed to the front, and a weight lifting device A is surrounded by an outer cover 36, and a side plate or a rear plate of the outer cover 36. Is a door that can be opened,
An operation panel 37 is provided on the front surface of the outer cover 36. This operation panel 37 is shown enlarged in FIG. The operation panel 37 is provided with a large number of drop height setting buttons 38 for setting the drop height of the weight 26, and in the illustrated embodiment, it can be set from 0 to 1000 mm at a pitch of 50 mm. Further, the operation panel 37 is provided with a height setting auxiliary button 39 so that the height of the weight determined by the drop height setting button 38 can be set higher by 25 mm. Further, the operation panel is provided with up and down buttons 40 and 41 so that the weight can be vertically set in units of 1 mm. In the figure, 42 is a weight drop height display portion, which displays the weight drop height set by the height setting button, and 43 is a test button,
The weight is dropped by this button operation, and then the weight is automatically raised to the set height. Further, reference numeral 45 in FIG. 11 denotes a pin hole used when manually adjusting the height of the weight 26, and a support pin is inserted into the pin hole similarly to the previous device to stop the weight 26. Reference numeral 45 is a peep hole.

The operation of the preferred embodiment of the weight lifting device and the impact tester of the present invention having the above-mentioned structure will be described below. First, in order to place the test sheet C on the pedestal 20, the impact punch 23 is slightly raised,
At this time, when the operator lifts the knob 31 shown in FIGS. 7 and 8 against the elastic force of the winding spring 33, the support tongue 34 provided on the knob 31 pushes up the expanded diameter portion 35 of the hitting punch 23 and hits it. The punch 23 is lifted from the pedestal 20. Therefore, the operator places the test sheet C on the pedestal 20 and operates the air cylinders 29, 29 to lower the test sheet holding plate 27 that has been raised to lower the pedestal 2
When the test sheet C above 0 is pressed and stabilized, and at the same time when the knob 31 is released, the impact punch 23 descends and is placed on the test sheet C (shown in FIG. 6).

Next, the operator pushes the drop height setting button 38 on the operation panel corresponding to the desired height of the weight 26.
When is pressed, the drive motor 6 of the weight lifting device A operates, the screw shaft 5 rotates, and the slider 12 is raised to a predetermined height. This predetermined height is controlled by the computer. As the slider 12 rises, the weight mounting member 16 attached to the slider 12 advances in advance by the operation of the air cylinder 15 and the weight 26 is moved.
The weight 2 is placed in this state.
6 is raised to a predetermined height. Next, when the operator presses the test button 43 on the operation panel 37, the air cylinder 15 is retracted, the weight mounting member 16 is retracted, the weight 26 is dropped, and the weight 26 strikes the impact punch 23 to perform an impact test. To do. At the same time, the drive motor 6 is operated to rotate the screw shaft 5 in the reverse direction, and the slider 12 is lowered and the weight mounting member 16 is lowered. At this time, the weight placing member 16 descends in the retracted state and advances again at the lowermost position to place the weight 26, but when the weight placing member 16 descends in the advanced state due to some operation, The weight mounting member 16 contacts the weight 26, but since the weight mounting member 16 is pivotally supported by the shaft 18, the weight mounting member 16 rotates as shown by an imaginary line in FIG. 9 and neither the weight mounting member nor the weight is damaged. Thus, the test sheets C are sequentially replaced and the same test is performed.

In the case where the test sheet C to be tested is long, if the test sheet C is sequentially sent backward for each test, in the impact tester of the present invention, the weight lifting device A is replaced by the impact test device B. Since the position is shifted to the side from the position immediately after, the rear of the cradle 20 on which the test sheet C is placed can be left open, and the long test sheet C can be sent out to the rear. Then you can do an impact test.

FIG. 13 shows an impact tester equipped with another embodiment of the weight lifting device of the present invention in the same manner as in FIG. 1. In FIG. 13, the parts designated by the same reference numerals as those in FIG. 1 are the same parts. is there. In this embodiment, a weight lifting device using a circulating endless body is shown. In the figure, reference numeral 10 is a vertical guide member that constitutes the weight lifting device A, and a rotating member 50 composed of a pulley or a sprocket is provided at the upper and lower ends thereof.
50 is provided, and an endless circulating body 51 composed of an endless belt or an endless chain is spanned between the rotating members 50, 50, and is installed by a drive motor 52.
Is designed to operate in forward and reverse circulation. This endless circulation body 5
The slider 12 is connected to 1 and is operated up and down. In this embodiment, the rotation speed detector 8 is attached to the rotary shaft of any rotary member.

FIG. 14 shows an impact tester equipped with still another embodiment of the weight lifting device of the present invention in the same manner as in FIGS. 1 and 13, and in FIG. 14, parts designated by the same reference numerals as in FIG. Are the same part. In this embodiment, a fluid lifting cylinder is used for the weight lifting device. In the figure, reference numeral 55 denotes a cylinder that constitutes a vertical guide member, and a slider 12 that is composed of a piston is provided in this cylinder, and the slider 1 that is composed of the piston is formed by the fluid pressure supplied to the inlet / outlet ports 56, 56 for gas or liquid.
2 is configured to operate up and down.

[0021]

As described above, according to the weight lifting device and the impact tester of the present invention, the weight can be automatically lifted by the up-and-down operating structure of the slider without manually lifting the weight, and the body of the operator can be lifted. This has the effect of reducing the amount of manual work. Further, a rotation speed detector is connected to the end of the screw shaft, the rotation speed detector detects the rotation speed of the screw shaft, and the moving distance of the weight mounting member is calculated by the pitch of the screw shaft. Therefore, it is possible to automatically set many drop heights, which has a great effect that automation of the vertical movement of the weight becomes possible. Further, the present invention has an effect that not only the weight lifting is automated, but also various workability is good and the impact tester can be easily handled.

[Brief description of drawings]

FIG. 1 is a front view of a preferred embodiment of an impact tester equipped with a weight lifting device of the present invention, omitting an intermediate height part;
A part is cut away and shown.

FIG. 2 is a side view of the same in which the middle part of the height is omitted and a part thereof is cut away.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of the same in which weights and sliders are omitted.

FIG. 5 is a front view showing a test sheet cradle and a hit punch portion.

FIG. 6 is a front view of the same portion shown in FIG. 5 in a state where a test sheet pressing plate is lowered.

FIG. 7 is a front view of a hitting punch operating unit.

FIG. 8 is a side view of the hitting punch operating portion.

FIG. 9 is a side view of the weight mounting member.

FIG. 10 is a plan view of a weight mounting member.

FIG. 11 is an overall front view of the impact tester of the present invention.

FIG. 12 is a front view of an operation panel of the impact tester of the present invention.

FIG. 13 is a front view of an impact tester including another embodiment of the weight lifting device of the present invention, in which a middle portion of the height is omitted and a part thereof is cut away.

FIG. 14 is a front view of an impact tester including another embodiment of the weight lifting device of the present invention, in which a middle portion of the height is omitted and a part thereof is cut.

[Explanation of symbols]

 A Weight lifting device B Impact test device C Test sheet 5 Screw shaft 6 Drive motor 8 Rotation speed detector 9 Nut 10 Vertical guide member 11 Convex strip guide 12 Slider 15 Air cylinder 16 Weight mounting member 18 Shaft support 20 Cradle 22 Support Platform 23 Impact punch 25 Convex guide 26 Weight 27 Test sheet retainer plate 31 Picking

Claims (15)

[Claims] 1. A vertical guide member is provided upright, a slider is provided on the vertical guide member to move up and down in response to a driving force of a drive source, and the slider is a weight mounting member that can move forward and backward. A weight lifting device in an impact tester, wherein a weight is placed on the weight placing member to move the weight up and down. 2. A screw shaft which is rotated by a driving force of a drive source is erected, and a nut which is vertically moved by the rotation is screwed on the screw shaft, and the slider is coupled and integrated with the nut. Item 1. A weight lifting device in the impact tester according to Item 1. 3. A rotation speed detector is connected to the end of the screw shaft, the rotation speed of the screw shaft is detected by this rotation speed detector, and the moving distance of the weight mounting member is calculated by the pitch of the screw shaft. The weight lifting device in the impact tester according to claim 2, wherein the weight lifting device is configured as described above. 4. A weight lifting device for an impact tester according to claim 1, further comprising: an endless circulating member which is laid between upper and lower rotating members and circulates, and the slider is connected to the endless circulating member. . 5. The weight lifting device in an impact tester according to claim 1, wherein the vertical guide member is composed of a cylinder, and the slider is composed of a piston which moves up and down in the cylinder by fluid pressure. 6. The weight mounting member is rotatable by 90 degrees between a horizontal position and a vertical position. When the weight mounting member hits the weight when the weight mounting member descends, the weight mounting member automatically becomes vertical from the horizontal position. The weight lifting device for an impact tester according to any one of claims 1 to 5, wherein the weight lifting device is configured to rotate in a direction. 7. A pedestal on which a test sheet is placed, an impact punch is provided on the pedestal, and the impact punch is movably supported on a support table provided on the pedestal. In addition to providing an impact test device configured by erecting a tower-shaped guide member that guides the weight so that the weight can move up and down,
A vertical guide member is provided upright, and a slider that guides up and down by receiving a driving force of a drive source is provided on the vertical guide member. A weight mounting member that can move forward and backward in the slider is provided on the slider. An impact tester comprising a weight lifting device, wherein a weight lifting device configured to mount a weight on a mounting member and move the weight up and down is provided adjacent to the impact testing device. 8. A weight lifting device in which a screw shaft which is rotated by a driving force of a drive source is erected, and a nut which is vertically moved by the rotation thereof is screwed to the screw shaft, and the slider is coupled and integrated with the nut. An impact tester comprising the weight lifting device according to claim 7, which comprises 9. A rotation speed detector is connected to an end of a screw shaft of the weight lifting device, the rotation speed of the screw shaft is detected by this rotation speed detector, and the moving distance of the weight mounting member is determined by the pitch of the screw shaft. 9. The method according to claim 8, which is configured to calculate
An impact tester equipped with the weight lifting device described. 10. The weight according to claim 7, wherein an endless circulating member is provided between the upper and lower rotating members for circulating operation, and the slider is connected to the endless circulating member to constitute the weight lifting device. An impact tester equipped with a lifting device. 11. The weight lifting device according to claim 7, wherein the vertical guide member is composed of a cylinder, and the slider is composed of a piston which moves up and down by a fluid pressure in the cylinder to constitute the weight lifting device. Impact tester equipped with. 12. The weight mounting member of the weight lifting device is rotatable by 90 degrees between a horizontal position and a vertical position, and automatically when the weight mounting member hits the weight when the weight mounting member descends. An impact tester equipped with the weight lifting device according to any one of claims 7 to 11, wherein the impact tester is configured to rotate vertically from a horizontal position. 13. The weight lifting device is arranged laterally offset from the position immediately after the impact test device, and a slider is provided on the slider of the weight lifting device so as to project laterally immediately after the impact test device. An impact tester comprising the weight lifting device according to any one of claims 7 to 12, wherein the weight mounting member is provided on the support plate so as to be movable back and forth. 14. The weight according to claim 7, wherein a test sheet pressing plate is provided on a pedestal of the impact test device, the test sheet pressing plate being vertically movable and having a through hole for penetrating a punch. An impact tester equipped with a lifting device. 15. A tower-shaped guide member of the impact test apparatus is provided with a vertically movable knob at a lower end thereof, and a supporting tongue projecting rearward is provided at the knob, and the supporting tongue is expanded at an upper end of a hitting punch. An impact tester equipped with the weight lifting device according to any one of claims 7 to 14, wherein the impact punch is vertically moved by inserting the knob below a diameter portion and vertically moving the knob.