Loading device

Abstract

To provide a load device capable of measuring a load applied to a body to be compressed when compressing the body to be compressed.SOLUTION: A load device includes: a bottom plate 22, an elevation part 60 provided so as to movable along a support column 21 provided on the bottom plate 22; a link mechanism 30 which moves the elevation part 60 by the expansion / contraction operation; and a load cell 64 which is provided in the elevation part 60. By movement of the elevation part 60, the elevation part 60 presses a body 70 to be compressed provided between the bottom plate 22 and the elevation part 60 to apply a load thereon, and the load cell 64 measures the load applied to the body 70 to be compressed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a load device, and more particularly to a load device using a link mechanism. [Background technology]

[0002] As a conventional loading device, for example, the structure described in the following Patent Document 1 is known. As shown in Fig. 4, a press device 12 as a conventional loading device has a bottom plate 22, a support column 21 provided on the bottom plate 22, a top plate 20 supported by the support column 21, a pantograph jack 30 attached to the top plate 20, and a lifting unit 60 attached to the pantograph jack 30. The lifting unit 60 is composed of a plate-shaped pressing unit 62, and can be raised and lowered between the top plate 20 and the bottom plate 22 by the extension and contraction of the pantograph jack 30.

[0003] When compressing the object 70 placed on the bottom plate 22, the pantograph jack 30 is extended by turning the handle 32 of the pantograph jack 30, and the lifting part 60 is lowered. As the lifting part 60 is lowered, the pressing surface 62a formed on the lower surface of the pressing part 62 presses the object 70, and the object 70 is compressed between the pressing part 62 and the bottom plate 22. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-67855 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the press device 12 described in Patent Document 1 had a problem in that the load applied to the compressed body 70 when compressing the compressed body 70 could only be empirically estimated from the amount of rotation of the handle 32 of the pantograph jack 30.

[0006] The present invention has been made to solve such problems, and has an object to provide a loading device capable of measuring the load applied to a compressed body when the compressed body is compressed. [Means for solving the problem]

[0007] In order to solve the above problems, the loading device according to the present invention comprises: Do not move The load measuring device is provided with a fixed section, a movable section that is movably arranged along a support provided on the fixed section, a link mechanism that moves the movable section by an expanding and contracting motion, and a load measuring section provided on the movable section, and when the movable section moves, the movable section presses a load-bearing body provided between the fixed section and the movable section to apply a load, and the load measuring section measures the load applied to the load-bearing body, and the movable section has a protruding section that includes a protruding surface that contacts and presses the load-bearing body, and when the protruding surface contacts the load-bearing body, the protruding surface contacts the load-bearing body while being separated from the load-bearing body in the vertical direction. The image is taken of the state in which the load is being pressed without any The imaging unit is configured to include an imaging section.

[0008] The moving section may also be configured to have a protruding section including a protruding surface that contacts and presses the load object, and an imaging section that does not contact the load object when the protruding surface contacts the load object. The apparatus may also be configured to have a display unit that displays the load applied to the load-bearing body measured by the load measuring unit. Effect of the Invention

[0009] The loading device of the present invention comprises a link mechanism that moves the moving part by an extension and contraction action, and a load measuring unit provided on the moving part.As the moving part moves, the moving part presses a loaded body provided between the fixed part and the moving part to apply a load, and the load measuring unit is configured to measure the load applied to the loaded body.Therefore, it is possible to measure the load applied to the compressed body when the compressed body is compressed. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a front view of a press device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the press device shown in FIG. [Diagram 3] FIG. 11 is a front view of a press apparatus according to a second embodiment of the present invention. [Figure 4] FIG. 1 is a schematic diagram of a conventional press device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Embodiment 1 A first embodiment of the present invention will be described below with reference to the accompanying drawings of Figures 1 and 2. Note that the same or equivalent parts as those in the conventional example are denoted by the same reference numerals. 1 is a schematic diagram of a press device 10 according to a first embodiment of the present invention. The press device 10 has a horizontally disposed bottom plate 22, four support columns 21 provided on the bottom plate 22, and a top plate 20 supported by the support columns 21. A compressed body 70, which is an object to be compressed and is placed on an upper surface of the bottom plate 22, is placed on the bottom plate 22. The bottom plate 22 is also provided with tapped holes 24 for fixing the compressed body 70 with screws or the like. The press device 10 constitutes a loading device, the bottom plate 22 constitutes a fixing portion, and the compressed body 70 constitutes a loaded body.

[0012] An eyebolt 23 for suspending the press device 10 is attached to the upper side of the top plate 20. A pantograph jack 30 is attached to the lower side of the top plate 20. The pantograph jack 30 constitutes a link mechanism having four links.

[0013] The pantograph jack 30 has a shaft 31, and the pantograph jack 30 extends and retracts by rotating the shaft 31. A motor 50 that generates torque for rotating the shaft 31 is provided near the pantograph jack 30. The motor 50 is a servo motor and constitutes a drive unit. The motor 50 transmits torque to the shaft 31 by a gear mechanism (not shown). Although the motor 50 is a servo motor, other types of motors such as a stepping motor may be used. Although the motor 50 transmits torque to the shaft 31 by a gear mechanism, other types of torque transmission mechanisms such as a belt mechanism may be used.

[0014] A lifting unit 60 is provided at the bottom of the pantograph jack 30. The lifting unit 60 has a load cell 64 connected to the pantograph jack 30, a lifting plate 61 provided on the lower surface of the load cell substantially parallel to the bottom plate 22, and a pressing unit 62 provided on the lower surface of the lifting plate 61. The pressing unit 62 is provided so as to protrude downward from the lifting plate 61. The load cell 64 is configured to be able to measure loads in both the compressive and tensile directions. A pressing surface 62a is formed on the lower surface of the pressing unit 62, facing parallel to the bottom plate 22. The lifting unit 60 constitutes a moving unit, the pressing unit 62 constitutes a protruding unit, the pressing surface 62a constitutes a protruding surface, and the load cell 64 constitutes a load measuring unit.

[0015] The lifting section 60 has cylindrical linear guides 63 provided on the upper surface of the four corners of the lifting plate 61. The four support columns 21 penetrate the linear guides 63 and the lifting plate 61. By extension and contraction of the pantograph jack 30, the lifting plate 61 is configured to be able to move up and down in the A direction along the support columns 21 between the bottom plate 22 and the top plate 20 while remaining approximately parallel, i.e., approximately horizontal, to the bottom plate 22.

[0016] 2, a display unit 80, which is a load cell conditioner that displays the load measurement results of the load cell 64 of the lifting unit 60, is attached to the top plate 20. The display unit 80 is attached so that the load measurement result display can be seen when the press apparatus 10 is viewed from the side. As a means for displaying the measured value in the display unit 80, any display such as, for example, a 7-segment LED display, a 7-segment liquid crystal display, or a liquid crystal display can be used.

[0017] A camera 81 and an LED 82 are attached to the underside of the lift plate 61 of the lift section 60. The camera 81 is a CCD camera and is provided so as to be able to capture an image of the compressed body 70 placed on the bottom plate 22. The LED 82 is an illumination LED and is used to illuminate the compressed body 70 for imaging by the camera 81 and for visual observation by an operator. The camera 81 and the LED 82 are formed to be sufficiently small in size so that their tips are above the pressing surface 62a of the pressing section 62 when attached to the underside of the lift plate 61. The camera 81 constitutes an imaging section, and the LED 82 constitutes an illumination section.

[0018] Next, a description will be given of the operation of the press device 10 of this embodiment 1. As shown in Figures 1 and 2, the compressed body 70 is placed on the bottom plate 22. The compressed body 70 is fixed to the bottom plate 22 by screws using the tapped holes 24.

[0019] When compressing the compressed body 70, the motor 50 is driven to apply torque to the shaft 31 of the pantograph jack 30 to rotate it. Then, the pantograph jack 30 extends, and the lifting part 60 descends in the direction A along the support 21 while keeping the lifting plate 61 horizontal.

[0020] As the lifting unit 60 descends, the pressing surface 62a of the pressing unit 62 comes into contact with the compressed body 70, and the compressed body 70 is pressed and compressed by the pressing unit 62. At this time, the load applied to the compressed body 70 is measured by the load cell 64, and the measurement result of the load is displayed on the display unit 80.

[0021] At this time, the camera 81 also captures an image of the compressed body 70. This allows the compressed state of the compressed body 70 to be observed and recorded. Furthermore, the LED 82 illuminates the compressed body 70. This provides sufficient brightness for the camera 81 to capture an image of the compressed body 70 and for an operator to observe the compressed state of the compressed body 70.

[0022] The camera 81 and the LED 82 are attached to the lift plate 61 with their tips formed above the pressing surface 62a of the pressing portion 62, so that even if the pressing surface 62a comes into contact with the compressed body 70, the camera 81 and the LED 82 do not come into contact with the loaded body 70. Therefore, when the pressing portion 62 applies a load to the compressed body 70, the load is not applied to the camera 81 and the LED 82, and the camera 81 and the LED 82 do not hinder the compression of the compressed body 72.

[0023] In this way, the device comprises the bottom plate 22, the lifting section 60 which is freely movable along the support pillar 21 provided on the bottom plate 22, the link mechanism 30 which moves the lifting section 60 by extension and contraction, and the load cell 64 provided on the lifting section 60, and as the lifting section 60 moves, the lifting section 60 presses the compressed body 70 provided between the bottom plate 22 and the lifting section 60 to apply a load, and the load cell 64 measures the load applied to the compressed body 70, so that the load applied to the compressed body 70 when the compressed body 70 is compressed can be measured.

[0024] In addition, the lifting section 60 has a pressing section 62 including a pressing surface 62a that contacts and presses the compressed body 70, and a camera 81 that does not contact the compressed body 70 when the pressing surface 62a contacts the compressed body 70, so that the compressed state of the compressed body 70 can be imaged.

[0025] In addition, since the display unit 80 displays the load applied to the compressed body 70 measured by the load cell 64, the load applied to the compressed body 70 can be confirmed during the compression operation.

[0026] In this embodiment 1, the compressed body 70 is fixed to the bottom plate 22, and the press device 10 is used as a compression device in which the pressing portion 62 compresses the compressed body 70. However, the press device 10 may also be used as a pulling device that pulls the compressed body 70.

[0027] The operation when the press device 10 is used as a pulling device will be described below. The compressed body 70 is fixed to the bottom plate 22 by screwing using the tapped hole 24. The pantograph jack 30 is extended to bring the pressing surface 62a of the pressing part 62 of the lifting part 60 into contact with the compressed body 70, and the compressed body 70 is fixed to the pressing surface 62a by screwing using a tapped hole (not shown).

[0028] Next, the motor 50 is driven to apply torque to the shaft 31 to rotate the pantograph jack 30 in a direction to contract. When the pantograph jack 30 contracts, the lifting unit 60 tries to rise along the support 21 while maintaining horizontality in the direction A. Since the compressed body 70 is fixed to the bottom plate 22 and the pressing surface 62a, the compressed body 70 is loaded in a tensile direction by the pressing unit 62. This load in the tensile direction is measured by the load cell 64, and the measurement result is displayed on the display unit 80. In addition, the camera 81 captures an image of the compressed body 70, so that the state in which the compressed body 70 is being pulled can be observed and recorded. Furthermore, since the compressed body 70 is illuminated by the LED 82, sufficient brightness is obtained for photographing by the camera 81 or for observation by the naked eye of an operator.

[0029] Even when the press device 10 is used as a pulling device, the camera 81 and the LED 82 do not come into contact with the load-bearing body 70 when the pressing surface 62a comes into contact with the compressed body 70. Therefore, no load is applied to the camera 81 and the LED 82, and therefore the camera 81 and the LED 82 do not hinder the compression of the compressed body 72.

[0030] Embodiment 2 Next, a configuration of a loading device according to embodiment 2 of the present invention will be described. In the following embodiment, the same reference characters as those in Fig. 1 and Fig. 2 denote the same or similar components, and detailed description thereof will be omitted. In the configuration of the loading device according to the second embodiment, the positional relationship between the pantograph jack 30 and the lifting unit 60 is upside down compared to the first embodiment.

[0031] A front view of the press device 11 according to the second embodiment is shown in FIG. 3. The pantograph jack 30 is attached to the bottom plate 22. The pantograph jack 30, the load cell 64, the lift plate 61, and the pressing part 62 of the lift unit 60 are attached upside down from those in the first embodiment. That is, the load cell 64 is attached to the upper side of the pantograph jack 30, the lift plate 61 is attached to the top of the load cell 64, and the pressing part 62 is attached to the upper surface of the lift plate 61 approximately parallel to the top plate 20. The pressing surface 62a facing the top plate 20 approximately parallel is formed on the upper surface of the pressing part 62. The camera 81 and the LED 82 are attached to the upper surface of the lift plate 61 with sufficiently small dimensions so that their tips are lower than the pressing surface 62a of the pressing part 62. The top plate 20 constitutes a fixed portion. The other configurations are the same as those in the first embodiment.

[0032] Next, the operation of the press device 11 in this embodiment 2 will be described. When the press device 11 is used as a compression device for compressing the compressed body 70, the compressed body 70 is placed on the pressing surface 62a of the pressing part 62 and fixed by screwing into a tapped hole not shown. Then, the motor 50 is driven to apply torque to the shaft 31, the pantograph jack 30 is extended, and the lifting part 60 is raised along the support 21 in the direction A while maintaining the horizontality. Then, the upper part of the compressed body 70 comes into contact with the top plate 20 due to the lifting part 60 rising, and the compressed body 70 is pressed and compressed by the pressing part 62. At this time, the load applied to the compressed body is measured by the load cell 64, and the measurement result of the load is displayed on the display part 80. In addition, the camera 81 captures an image of the compressed body 70, so that the compressed state of the compressed body 70 can be observed and recorded.

[0033] When the press device 11 is used as a pulling device for pulling the compressed body 70, the compressed body 70 is fixed to the pressing part 62 by screwing it into a tapped hole (not shown). Then, the pantograph jack 30 is extended to bring the top plate 20 into contact with the upper part of the compressed body 70, and the compressed body 70 is fixed to the top plate 20 by screwing it into a tapped hole (not shown).

[0034] Next, the motor 50 is driven to apply torque to the shaft 31 to rotate the pantograph jack 30 in a direction to contract. When the pantograph jack 30 contracts, the lifting unit 60 attempts to descend in the direction A along the support 21 while maintaining horizontality. Since the compressed body 70 is fixed to the top plate 20 and the pressing surface 62a, the compressed body 70 is loaded in a tensile direction by the pressing unit 62. This load in the tensile direction is measured by the load cell 64, and the measurement result is displayed on the display unit 80. In addition, the camera 81 captures an image of the compressed body 70, so that the state in which the compressed body 70 is being pulled can be observed and recorded.

[0035] Furthermore, whether the press device 11 is used as a compression device or as a tension device, the compressed body 70 is illuminated by the LED 82, providing sufficient brightness for photographing with the camera 81 or for observation with the naked eye of an operator.

[0036] In the first and second embodiments, the compressed body 70 is fixed to the top plate 20, the bottom plate 22, or the pressing portion 62 by screwing into a tapped hole, but when the press device 10 and the press device 11 are used as compression devices, it is not necessarily required to fix the compressed body 70 if the compressed body 70 is made of a material that does not shift laterally even when pressed by the pressing portion 62 or if the pressing conditions are such that the compressed body 70 does not shift laterally. Also, the method of fixing the compressed body 70 may be a method other than screwing.

[0037] In the first and second embodiments, the load cell 64 is directly connected to the pantograph jack 30, but may be provided at another position as long as the load applied to the compressed body by the pressing unit 62 can be measured. For example, the lift plate 61 may be directly connected to the pantograph jack 30, and a load cell may be provided inside the pressing unit 62. In addition, the load cell 64 is configured to be capable of measuring loads in both the compressive and tensile directions, but when the press devices 10 and 11 are used only as compression devices, a load cell 64 capable of measuring loads only in the compressive direction may be used, and when the press devices 10 and 11 are used only as tension devices, a load cell 64 capable of measuring loads only in the tensile direction may be used.

[0038] In addition, in the first and second embodiments, the motor 50 is used to apply torque to the shaft 31 of the pantograph jack 30 to rotate it, but the shaft 31 may be rotated using other means, such as a handle.

[0039] Furthermore, by providing a scale on the support 21, the ascending or descending distance of the lifting / lowering part 60 can be measured and used as a guide for estimating the load applied to the compressed body 70 by the pressing part 62.

[0040] In addition, in the first and second embodiments, the lifting unit 60 moves up and down along the direction A, which is the vertical direction. However, the press devices 10, 11 may be configured so that the lifting unit 60 moves sideways.

[0041] In addition, in the first and second embodiments, the measurement results of the load cell 64 are displayed on the display unit 80, which is a conditioner. However, instead of or in addition to the display unit 80, a display unit such as a monitor may be provided outside the press apparatus 10, 11 to display the measurement results of the load cell 64.

[0042] The gist of the loading device according to the present invention is as follows. That is, the device is equipped with the bottom plate 22, the lifting unit 60 which is freely movable along the support 21 provided on the bottom plate 22, the link mechanism 30 which moves the lifting unit 60 by an extension / contraction action, and the load cell 64 provided on the lifting unit 60, and as the lifting unit 60 moves, the lifting unit 60 presses the compressed body 70 provided between the bottom plate 22 and the lifting unit 60 to apply a load, and the load cell 64 measures the load applied to the compressed body 70. The lifting unit 60 is also configured to have a pressing unit 62 which includes a pressing surface 62a which contacts and presses the compressed body 70, and a camera 81 which does not contact the compressed body 70 when the pressing surface 62a contacts the compressed body 70, and also has the display unit 80 which displays the load applied to the compressed body 70 measured by the load cell 64. [Industrial Applicability]

[0043] The loading device according to the present invention comprises a fixed part, a movable part 60 which is freely movable along a support 21 provided on the fixed part 22, a link mechanism 30 which moves the movable part 60 by an extension and contraction action, and a load measuring part 64 provided on the movable part 60, and as the movable part 60 moves, the movable part 60 presses a load-bearing body 70 provided between the fixed part 22 and the movable part 60 to apply a load, and the load measuring part 64 measures the load applied to the load-bearing body 70, so that the load applied to the load-bearing body when it is compressed can be measured. [Explanation of symbols]

[0044] 20 Top plate (fixed part) 21 Post 22 Bottom plate (fixed part) 30 Pantograph jack (link mechanism) 60 Lifting section (moving section) 62 Pressing part (protruding part) 62a Pressing surface (protruding surface) 64 Load cell (load measurement part) 70 Compressed body (loaded body) 80 Display section 81 Camera (imaging unit)

Claims

1. A stationary part (22) that does not move, a movable part (60) provided movably along a support (21) provided on the fixed part; A link mechanism (30) that moves the moving part (60) by extending and contracting; A load measuring unit (64) provided on the moving unit (60); Equipped with When the moving part (60) moves, the moving part (60) presses a load-bearing body (70) provided between the fixed part (22) and the moving part (60) to apply a load, The load measuring unit (64) measures the load applied to the load-bearing body (70), The moving part (60) is a protruding portion (62) including a protruding surface (62a) that contacts and presses against the load body (70); an imaging section (81) for imaging a state in which the protruding surface (62a) is vertically spaced from the load body (70) and is not in contact with the load body (70) when the protruding surface (62a) comes into contact with the load body (70) and the load body (70) is being pressed; A loading device comprising:

2. 2. The loading device according to claim 1, further comprising a display unit (80) for displaying the load applied to the load object (70) measured by the load measuring unit (64).

Images