Workpiece positioner and method for installing workpiece positioner

Abstract

To provide a workpiece positioner capable of being easily transported and installed without deteriorating assembly precision, and a method for installing the workpiece positioner.SOLUTION: A workpiece positioner 1 according to embodiments of the present invention comprises: a base portion 2; a first support pillar 5 and a second support pillar 6 provided on the base portion 2; a motor 7 with a reducer provided on the first support pillar 5 and configured to rotationally drive the workpiece; a pillow-type bearing unit 8 provided on the second support pillar 6 coaxially with an output rotation axis A1 of the motor 7 with the reducer and configured to be rotationally driven relative to the workpiece; and reinforcing portions 3 provided between the first support pillar 5 and the second support pillar 6 provided on the base portion 2 at locations where the reinforcing portions can be lifted by a fork 100 so as to ensure rigidity of the base portion 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a work positioner and a method for installing a work positioner. [Background technology]

[0002] Conventionally, work positioners that orient a workpiece to be machined to an appropriate position and posture have been known. The work positioner includes a base section that is long in one direction, a first support column and a second support column provided at both longitudinal ends of the base section, a drive section provided at the upper end of the first support column, and a bearing provided at the upper end of the second support column. The drive section is driven to rotate and is provided coaxially with the bearing. The workpiece is supported at both ends by the drive section and the bearing. With this configuration, when the drive section is driven, the workpiece rotates around the rotation axis of the drive section.

[0003] Incidentally, when transporting a work positioner and setting it up at a predetermined location, a forklift or the like is used, for example. The forklift's transporting tool (forks) is inserted under the base, and the base is pushed up to lift the work positioner. After transporting the work positioner in this lifted state to the predetermined location, the work positioner is set up. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-65224 Summary of the Invention [Problem to be solved by the invention]

[0005] As with the conventional technology described above, when attempting to lift the base unit with a carrier, there is a possibility that the base unit may bend. In particular, for base units that are long in one direction, the longer the base unit, the greater the possibility of the base unit being bent. In such cases, the relative positions of the drive unit and bearings mounted on the base unit may be misaligned, making it necessary to readjust the positions of the drive unit and bearings after installing the work positioner. This creates the problem of cumbersome work involved in transporting and installing the work positioner.

[0006] The present invention provides a work positioner that can be easily transported and installed without compromising assembly precision, and a method for installing the work positioner. [Means for solving the problem]

[0007] A work positioner according to one embodiment of the present invention is a work positioner that is lifted and transported by a transporting device, and includes a base portion, first and second support pillars provided on the base portion, a drive portion provided on the first support pillar for driving a workpiece to rotate, a driven portion provided on the second support pillar and coaxial with the rotation axis of the drive portion for rotating relative to the workpiece, and a reinforcing portion provided between the first and second support pillars on the base portion at a location lifted by the transporting device, for ensuring the rigidity of the base portion.

[0008] With this configuration, for example, when lifting the base with a carrier, the reinforcing part can prevent the base from bending, making it possible to easily transport and install the work positioner without compromising assembly accuracy.

[0009] In the above configuration, the base portion may be formed to be long in one direction, and the first support pillar and the second support pillar may be provided at both ends of the base portion in the longitudinal direction, respectively.

[0010] In the above configuration, the reinforcing portion may be provided detachably with respect to the base portion.

[0011] In the above configuration, the reinforcing portion may be provided with a holder having a carrier insertion hole into which the carrier is inserted in the lateral direction of the base portion.

[0012] In the above configuration, the holder may be provided on the opposite side of the reinforcing portion from the base portion.

[0013] In the above configuration, the holder may be provided on the same plane as a plane on which the first support column and the second support column of the base portion are provided.

[0014] In the above configuration, the base portion may be formed to be long in one direction, and a part of the base portion may be provided so as to be separable in the longitudinal direction.

[0015] In the aforementioned configuration, the reinforcing portion may be provided so as to straddle the dividing portion of the base portion.

[0016] In the above configuration, the base portion and the first support pillar, the base portion and the second support pillar, the first support pillar and the driving portion, the second support pillar and the driven portion, and each of the divided base portions may each be positioned relative to each other by a positioning portion.

[0017] A method for installing a work positioner according to one aspect of the present invention includes a base section that is elongated in one direction and separable in the longitudinal direction, a first support column and a second support column provided at both ends of the base section in the longitudinal direction, a drive section that is provided on the first support column and rotates a workpiece, a driven section that is provided on the second support column and is coaxial with the rotation axis of the drive section and rotates relative to the workpiece, and a driven section that is provided between the first support column and the second support column of the base section and is provided on the same plane as the plane on which the first support column and the second support column are provided, and that ensures the rigidity of the base section. and a reinforcing part for supporting the work positioner, the method comprising: an assembly process of integrating the divided base parts and assembling the first support pillar, the second support pillar, the drive part, the driven part, and the reinforcing part; a transport process of, after the assembly process, lifting the part of the base part where the reinforcing part is provided with a transport tool and transporting the base part in the lifted state; an installation process of, after the transport process, installing the base part at a desired installation location; and a removal process of, after the installation process, dividing the base part and removing a part of the base part.

[0018] By using this method, for example, when lifting the base with a carrier, the reinforcing part can prevent the base from bending. After the work positioner is installed, part of the base is removed. This allows for a large space to be secured around the drive unit and the driven unit without compromising the accuracy of the relative positioning between the drive unit and the driven unit. This avoids interference between the workpiece and the base. This makes it possible to attach a large workpiece to the work positioner. [Effects of the Invention]

[0019] The above-described work positioner and the method for installing the work positioner can be easily transported and installed without deteriorating assembly precision. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of a work positioner according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of part II in FIG. [Figure 3] 1 is a perspective view of a first support column and a motor with a reducer according to an embodiment of the present invention, viewed obliquely from above. [Figure 4] 3 is a perspective view of a second support column and a pillow-shaped bearing unit according to an embodiment of the present invention, viewed obliquely from above. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] Next, an embodiment of the present invention will be described with reference to the drawings.

[0022] <Work Positioner> 1 is a perspective view of a work positioner 1. In the following description, the up and down directions refer to the work positioner 1 when it is installed on a floor surface F. The workpiece positioner 1 rotates a workpiece (not shown) while holding it, for example, and thereby orients the workpiece in an appropriate position and posture to support welding work and other part assembly work.

[0023] As shown in FIG. 1, the work positioner 1 includes a reinforcing section 3 provided on a base section 2, a holder 4 provided on the reinforcing section 3, a first support column 5 and a second support column 6 provided on the base section 2, a motor 7 with a reducer provided on the first support column 5, and a pillow-shaped bearing unit 8 provided on the second support column 6.

[0024] <Base part> The base portion 2 is elongated in one direction and has a frame-like shape when viewed from the top to bottom. That is, the base portion 2 includes two long frames 11, 12 (first long frame 11, second long frame 12) arranged parallel to each other in the short side direction, and two short frames 13, 14 (first short frame 13, second short frame 14) provided at both ends of each long frame 11, 12 in the long side direction and connecting the two long frames 11, 12. In the following description, the long direction of the base portion 2 will be simply referred to as the long direction. The short direction of the base portion 2 will be simply referred to as the short direction.

[0025] FIG. 2 is an exploded perspective view of part II in FIG. As shown in FIGS. 1 and 2, the two long frames 11 and 12 are formed of, for example, square pipes. The two short frames 13, 14 include connecting frames 51, 52 (first connecting frame 51, second connecting frame 52) that connect the opposing surfaces 11a, 12a of the long frames 11, 12, respectively, and base plates 53, 54 (first base plate 53, second base plate 54) that are arranged across the upper surfaces 51a, 52a of the connecting frames 51, 52 and the upper surfaces 11b, 12b of the two long frames 11, 12. The connecting frames 51, 52 are formed, for example, from square pipes.

[0026] Of the two long frames 11, 12, the first long frame 11 is provided so that a large portion of the center in the longitudinal direction can be separated. That is, the first long frame 11 includes a removable frame 15 that forms a large portion of the center in the longitudinal direction, a first fixed frame 16 that is disposed at one of the longitudinal ends of the removable frame 15 on the first short frame 13 side, and a second fixed frame 17 that is disposed at one of the longitudinal ends of the removable frame 15 on the second short frame 14 side.

[0027] Between the removable frame 15 and each of the fixed frames 16, 17 is a dividing section 18. The configuration of each dividing section 18 and its surroundings is identical. For this reason, Fig. 2 shows the dividing section 18 between the removable frame 15 and the first fixed frame 16 and its surroundings, and does not show the details of the dividing section 18 between the removable frame 15 and the second fixed frame 17 and its surroundings.

[0028] Plate-shaped first reinforcing portion mounting seats 21 are provided on the upper surface 15a of the detachable frame 15, near the fixed frames 16, 17. Female threads 21a are formed at the four corners of the first reinforcing portion mounting seats 21. Bolts 22 are fastened into the female threads 21a.

[0029] Two connecting plates 23 are provided on the outer surface 15b of the removable frame 15 opposite the second long frame 12. Each connecting plate 23 is disposed on a raising plate 24 provided at each end of the outer surface 15b of the removable frame 15 in the longitudinal direction. Each connecting plate 23 extends from the raising plate 24 toward the corresponding fixed frame 16, 17.

[0030] The connecting plate 23 has four bolt insertion holes 23a formed in an extension portion 25 that extends from the raising plate 24. A bolt 26 is inserted into each bolt insertion hole 23a from the side opposite to the second long frame 12. A pin hole 23b is formed in the center of the extension portion 25 when viewed in the thickness direction, that is, between the four bolt insertion holes 23a. A positioning pin 27 is inserted into the pin hole 23b.

[0031] The upper surface 16a of the first fixed frame 16, which is closer to the first short frame 13 than the center in the longitudinal direction, is connected to the first short frame 13. The upper surface 17a of the second fixed frame 17, which is closer to the second short frame 14 than the center in the longitudinal direction, is connected to the second short frame 14. A plate-shaped second reinforcing portion mounting seat 31 is provided on the upper surface 16a, 17a of each fixed frame 16, 17, near the removable frame 15. A female screw portion 31a is formed at each of the four corners of the second reinforcing portion mounting seat 31. A bolt 22 is fastened into each female screw portion 31a.

[0032] A plate-shaped connecting plate mounting seat 33 is provided on each of the outer surfaces 16b, 17b of the fixed frames 16, 17 opposite the second long frame 12. The connecting plate mounting seat 33 is located at the end of the outer surfaces 16b, 17b of the fixed frames 16, 17 that faces the removable frame 15. The thickness of the connecting plate mounting seat 33 is the same as the thickness of the raising plate 24 of the removable frame 15.

[0033] When the end of each fixed frame 16, 17 on the removable frame 15 side is butted against both longitudinal ends of the removable frame 15, the extension portion 25 of the connecting plate 23 is overlapped on the connecting plate mounting seat 33. In this overlapping state, a female thread portion 33a is formed in the connecting plate mounting seat 33 coaxially with the bolt insertion hole 23a of the extension portion 25. A mounting seat pin hole 33b is formed in the connecting plate mounting seat 33 coaxially with the pin hole 23b of the extension portion 25.

[0034] The bolts 26 inserted into the bolt insertion holes 23a of the extension portions 25 are tightened into the female thread portions 33a of the connecting plate mounting seats 33. This fixes the detachable frame 15 and the fixing frames 16, 17 together. The positioning pins 27 inserted into the pin holes 23b of the extension portion 25 are simultaneously inserted into the mounting seat pin holes 33b. The positioning pins 27 determine the positions of the detachable frame 15 and the fixed frames 16, 17.

[0035] In addition, two plate-shaped bracket mounting seats 34 are provided on the outer surfaces 16b, 17b of each fixed frame 16, 17. One of the two bracket mounting seats 34 is arranged alongside the connecting plate mounting seat 33 in the longitudinal direction. The other of the two bracket mounting seats 34 is arranged at the end of the corresponding short frame 13, 14. A bracket 36 is fixed to each bracket mounting seat 34 with a bolt 35.

[0036] The bracket 36 is bent in an L-shape and extends downward from each of the fixed frames 16, 17. The bracket 36 is formed so as to be adjustable in the up and down direction relative to the bracket mounting seat 34. The bracket mounting seats 34 and brackets 36 are also provided on the connecting frames 51, 52 of the short frames 13, 14. By placing these brackets 36 on the floor F, the work positioner 1 is installed.

[0037] Two first reinforcement portion mounting seats 21 and two second reinforcement portion mounting seats 31 are also provided on the upper surface 12b of the second long frame 12. Each first reinforcement portion mounting seat 21 of the second long frame 12 is arranged opposite each first reinforcement portion mounting seat 21 of the first long frame 11 (detachable frame 15) in the short side direction. Each second reinforcement portion mounting seat 31 of the second long frame 12 is arranged opposite each second reinforcement portion mounting seat 31 of the first long frame 11 (first fixed frame 16, second fixed frame 17) in the short side direction.

[0038] The distance between the first reinforcement portion mounting seat 21 and the second reinforcement portion mounting seat 31 of the second long frame 12 is the same as the distance between the first reinforcement portion mounting seat 21 and the second reinforcement portion mounting seat 31 of the first long frame 11. Here, the distance between the first reinforcement portion mounting seat 21 and the second reinforcement portion mounting seat 31 of the first long frame 11 refers to the distance in a state in which the detachable frame 15 and each of the fixed frames 16, 17 are fixed. A total of four reinforcements 3 are provided on each of the reinforcement portion mounting seats 21, 31.

[0039] <Reinforcement and retaining fixtures> The shapes of the reinforcing parts 3 and the holders 4 are the same. Therefore, only the reinforcing parts 3 and the holders 4 on the first long frame 11 shown in Fig. 2 will be described, and a description of the other reinforcing parts 3 and the holders 4 will be omitted. In the following description of the reinforcing parts 3 and the holders 4, it will be assumed that the detachable frame 15 and the first fixed frame 16 are in a fixed state.

[0040] The reinforcement part 3 is formed in a plate shape spanning the first reinforcement part mounting seat 21 and the second reinforcement part mounting seat 31. In other words, the reinforcement part 3 is provided so as to span the dividing part 18 of the first long frame 11. Four bolt insertion holes 41 are formed at each of both longitudinal end portions of the reinforcement part 3. Each bolt insertion hole 41 is arranged coaxially with the corresponding female threaded portion 21a, 31a when the reinforcement part 3 is placed on the corresponding reinforcement part mounting seat 21, 31. A bolt 22 is inserted into each bolt insertion hole 41 from above, and the bolt 22 is tightened into the corresponding female threaded portion 21a, 31a. This fixes the reinforcement part 3 onto the corresponding reinforcement part mounting seat 21, 31.

[0041] The holder 4 provided on the reinforcing part 3 is formed in a rectangular tubular shape to form a carrier insertion hole 4a. The holder 4 is arranged so that the carrier insertion hole 4a is open in the short side direction. The holder 4 is formed in a rectangular shape that is long in the longitudinal direction when viewed in the short side direction. Ribs 43 are formed between both side surfaces 4b in the long side direction of the holder 4 and the top surface of the reinforcing part 3. The ribs 43 are formed so as to taper upward.

[0042] Two of each of the reinforcing parts 3 and holding devices 4 configured in this manner are attached to each of the long frames 11, 12. The two reinforcing parts 3 and holding devices 4 attached to the first long frame 11 and the two reinforcing parts 3 and holding devices 4 attached to the second long frame 12 face each other in the short side direction. Forks (carriers) 100 of a forklift (not shown) are inserted into the carrier insertion holes 4a of the holders 4 (details will be described later).

[0043] <1st pillar> FIG. 3 is a perspective view of the first support column 5 and the motor with a reducer 7 seen obliquely from above. As shown in Figures 1 and 3, the first support 5 comprises a base plate 61 arranged on the upper surface 53a of the first base plate 53, two vertical plates 62 rising from the base plate 61, and a horizontal plate 63 arranged on the two vertical plates 62.

[0044] The base plate 61 is formed in a rectangular shape with its short sides longer when viewed from the top-bottom direction. Bolt insertion holes (not shown) are formed in the four corners of the base plate 61. Bolts 64 are inserted into the bolt insertion holes and tightened into the female threads (not shown) of the first base plate 53. This fixes the base plate 61 to the first base plate 53.

[0045] Pin holes 61a are formed in two of the four corners of the base plate 61. The pin holes 61a are arranged alongside bolt insertion holes (not shown). A pin hole (not shown) is also formed in the first base plate 53, coaxial with the pin hole 61a of the base plate 61. Positioning pins 65 are inserted into the pin holes 61a of the base plate 61 and the pin holes of the first base plate 53, respectively. The positioning pins 65 determine the position of the first support column 5 (base plate 61) relative to the base portion 2 (first base plate 53).

[0046] The two vertical plates 62 are arranged side by side in the short-side direction, with the plate thickness direction being the short-side direction. The horizontal plate 63 is formed in a rectangular shape that is long in the short-side direction when viewed from the top and bottom, so as to straddle the two vertical plates 62. The speed reducer-equipped motor 7 is arranged on the upper surface 63a of the horizontal plate 63.

[0047] <Motor with reducer> The motor 7 with a reducer is a drive unit that rotates a workpiece (not shown). The motor 7 with a reducer includes a support portion 71, and a motor portion 72 and a reduction portion 73 supported by the support portion 71. A flange portion 74 extending on both sides in the short direction is provided at the lower portion of the support portion 71. Bolt insertion holes (not shown) are formed at the four corners of the flange portion 74. Bolts 75 are inserted into the bolt insertion holes, and the bolts 75 are tightened into the female threads (not shown) of the horizontal plate 63. This fixes the flange portion 74 to the horizontal plate 63.

[0048] Pin holes 74a are formed in two of the four corners of the flange portion 74. The pin holes 74a are arranged side by side with bolt insertion holes (not shown). A pin hole (not shown) is also formed in the horizontal plate 63, coaxial with the pin hole 74a of the flange portion 74. Positioning pins 76 are inserted into the pin holes 74a of the flange portion 74 and the pin holes of the horizontal plate 63, respectively. The positioning pins 76 determine the position of the reducer-equipped motor 7 (support portion 71) relative to the first support column 5 (horizontal plate 63).

[0049] Various motors can be used as the motor unit 72. An electric motor or a hydraulic motor can also be applied. A reduction unit 73 is connected to a motor shaft (not shown) of the motor unit 72. The reduction unit 73 reduces the rotation of the motor shaft and outputs it. Various reduction mechanisms can be used as the reduction unit 73. For example, a planetary gear mechanism or an eccentric oscillating reduction mechanism can be used. An eccentric oscillating reduction mechanism is a reduction mechanism that includes a crankshaft or an oscillating gear that is oscillated and rotated by the crankshaft. The output rotation axis A1 of the reduction unit 73 is along the longitudinal direction.

[0050] <Second pillar> FIG. 4 is a perspective view of the second support column 6 and the pillow-shaped bearing unit 8 seen obliquely from above. 1 and 4, the basic configuration of the second support column 6 is the same as that of the first support column 5. That is, although detailed description of each part will be omitted, the second support column 6 includes a base plate 81 disposed on the upper surface 54a of the second base plate 54, two vertical plates 82 rising from the base plate 81, and a horizontal plate 83 disposed on the two vertical plates 82.

[0051] The base plate 81 is fixed to the second base plate 54 by bolts 84. The base plate 81 and the second base plate 54 are positioned by positioning pins 85. The pillow-shaped bearing unit 8 is fixed to the upper surface 83a of the horizontal plate 83 by bolts 86.

[0052] <Pillow type bearing unit> Pillow-shaped bearing unit 8 includes a housing 91 fixed to horizontal plate 83 and a rolling bearing 92 supported by housing 91. The rolling bearing 92 is provided so that its axis A2 can be deflected relative to the housing 91. In other words, pillow-shaped bearing unit 8 has an aligning function. Pillow-shaped bearing unit 8 is disposed so that its axis A2 is coaxial with the reducer-equipped motor 7.

[0053] With this configuration, a workpiece (not shown) is placed between the reducer-equipped motor 7 and the pillow-shaped bearing unit 8. The workpiece (not shown) is supported at both ends by the reducer-equipped motor 7 and the pillow-shaped bearing unit 8. When the reducer-equipped motor 7 is driven in this state, the workpiece (not shown) rotates around the output rotation axis A1. At this time, the rolling bearing 92 of the pillow-shaped bearing unit 8 rotates in response to the workpiece (not shown). In other words, the pillow-shaped bearing unit 8 serves as a driven part that is driven by the reducer-equipped motor 7, which is the driving part. The work positioner 1 rotates the workpiece (not shown) around the output rotation axis A1, thereby orienting the workpiece to an appropriate position and posture.

[0054] <Work positioner installation method and work positioner operation during transportation> Next, a method for installing the work positioner 1 and the operation of the work positioner 1 during transportation will be described. The work positioner 1 is transported and installed, for example, by a forklift (not shown). First, the work positioner 1 is assembled in advance. At this time, the removable frame 15 and two fixed frames 16, 17 are fixed to the first long frame 11 of the base section 2. The two support columns 5, 6 and the reinforcing section 3 are assembled to the base section 2, and the reducer-equipped motor 7 and pillow-shaped bearing unit 8 are assembled to each of the support columns 5, 6 (assembly process).

[0055] Then, as shown in FIG. 1, the forks 100 of a forklift (not shown) are inserted into the carrier insertion holes 4a of the holder 4 from the short side direction. The forks 100 are bifurcated and have two claws 100a. Each claw 100a is inserted into the carrier insertion holes 4a of the long frames 11, 12 that face each other in the short side direction. In this state, the forks 100 are raised to lift the base 2 (work positioner 1). While still in the raised state, the work positioner 1 is transported to the desired installation location (transportation process).

[0056] When the base unit 2 is lifted by the forks 100, the weight of the work positioner 1 causes the base unit 2 to bend with the holder 4 as the fulcrum. However, the holder 4 is provided with a reinforcing member 3. In other words, the plate-shaped reinforcing member 3 is provided at the location of the base unit 2 that is lifted by the forks 100. The reinforcing member 3 ensures the rigidity of the base unit 2 at the location where the reinforcing member 3 is provided. As a result, the base unit 2 is prevented from bending with the holder 4 as the fulcrum.

[0057] Moreover, the first long frame 11 is provided with the reinforcing portion 3 so as to straddle the dividing portion 18 between the removable frame 15 and each of the fixed frames 16, 17. The dividing portion 18 is more susceptible to deformation than if the first long frame 11 were not divided. However, the reinforcing portion 3 reliably suppresses bending deformation of the first long frame 11.

[0058] Next, the work positioner 1 is transported to a desired installation location by a forklift (not shown), and then the forks 100 are lowered to install the base portion 2 on the floor surface F (installation step). Thereafter, if necessary, the detachable frame 15 of the base portion 2 is removed (removal step). If necessary, the reinforcing portion 3 and the holder 4 are also removed. This completes the installation of the work positioner 1.

[0059] As described above, the work positioner 1 described above includes a reinforcing part 3 provided between the first support column 5 and the second support column 6 of the base section 2, at a location where the base section 2 is lifted by the fork 100. The reinforcing part 3 ensures the rigidity of the base section 2. Therefore, when the base section 2 is lifted by a carrier such as the fork 100, the reinforcing part 3 can prevent the base section 2 from bending. This allows the work positioner 1 to be easily transported and installed without compromising assembly accuracy.

[0060] In particular, the base portion 2, which is long in one direction, is prone to bending in the longitudinal direction. On the other hand, if supports 5, 6 are provided at both longitudinal ends of the base portion 2, and the reducer-equipped motor 7 and pillow-shaped bearing unit 8 are mounted on these supports 5, 6, a sufficient distance can be secured between the reducer-equipped motor 7 and the pillow-shaped bearing unit 8. Therefore, by providing the reinforcing portion 3, it is possible to suppress bending of the base portion 2 while adequately accommodating various sizes of workpieces (not shown). As a result, the relative position between the reducer-equipped motor 7 and the pillow-shaped bearing unit 8 can be maintained with high precision.

[0061] The reinforcing part 3 is fixed to the base part 2 with bolts 22. This allows the reinforcing part 3 to be detachably attached to the base part 2. Therefore, when the reinforcing part 3 is not needed, it can be removed from the base part 2. This improves the external design of the work positioner 1 and also reduces its weight. For example, the reinforcing portion 3 can be used for other work positioners, which reduces the number of parts in the work positioner 1 and also simplifies parts management.

[0062] The reinforcing part 3 is provided with a holder 4 having a carrier insertion hole 4a formed therein. This allows the reinforcing part 3 and the holder 4 for transporting the work positioner 1 to be shared. For example, compared to when the reinforcing part 3 and the holder 4 are provided separately, the number of parts can be reduced, and the space occupied by the reinforcing part 3 and the holder 4 can be saved. The weight of the reinforcing part 3 and the holder 4 can also be reduced.

[0063] The holder 4 is provided on the reinforcing part 3. In other words, the holder 4 is provided on the opposite side of the reinforcing part 3 from the base part 2. This allows the mounting surface of the reinforcing part 3 and the base part 2 to be flat. Specifically, the reinforcing part 3 is formed in a plate shape, and plate-shaped reinforcing part mounting seats 21, 31 are provided on the base part 2. The reinforcing part 3 is mounted on these reinforcing part mounting seats 21, 31. This makes it easy to form the reinforcing part 3 and the locations on the base part 2 where the reinforcing part 3 is mounted.

[0064] Furthermore, by providing the reinforcing members 3 and holders 4 on the upper surfaces 11b, 12b of the long frames 11, 12, the support columns 5, 6 and holders 4 are aligned on the base 2. This allows for effective use of the space between the support columns 5, 6 of the base 2. As the support columns 5, 6 and holders 4 are arranged on the same surface of the base 2, portability is improved. The weight balance of the work positioner 1 is also improved.

[0065] The first long frame 11 is composed of a removable frame 15 and fixed frames 16 and 17, and is provided so that it can be separated in the longitudinal direction. Therefore, by removing the removable frame 15 after installing the work positioner 1, an empty space equivalent to the removable frame 15 can be created in the base section 2. This allows a larger range of motion to be secured for a workpiece (not shown) that rotates around the output rotation axis A1. Therefore, it becomes possible to attach as large a workpiece as possible to the work positioner 1. Removing the removable frame 15 also removes any components that get in the way of the worker's feet. This allows for a work positioner 1 with excellent workability.

[0066] The reinforcing portion 3 provided on the first long frame 11 is provided so as to straddle the divided portion 18. The divided portion 18, which is prone to deformation, can be reinforced by the reinforcing portion 3. Therefore, the reinforcing portion 3 can reliably suppress bending deformation of the first long frame 11.

[0067] The removable frame 15 and each fixed frame 16, 17 of the first long frame 11 are positioned by a positioning pin 27. The first base plate 53 and first support column 5 of the first short frame 13 are positioned by a positioning pin 65. The first support column 5 and motor with reducer 7 are positioned by a positioning pin 76. The second base plate 54 and second support column 6 of the second short frame 14 are positioned by a positioning pin 85.

[0068] As described above, by positioning each component using the positioning pins 27, 65, 76, and 85, the relative position of the reducer-equipped motor 7 and the pillow-shaped bearing unit 8 can be positioned with high precision. This makes it possible to provide a highly reliable work positioner 1. In particular, even if the first long frame 11 is configured to be divided into the removable frame 15 and the fixed frames 16 and 17, the relative position of the reducer-equipped motor 7 and the pillow-shaped bearing unit 8 can be positioned with high precision.

[0069] The installation method for the work positioner 1 includes an assembly process, a transportation process after the assembly process, an installation process after the transportation process, and a removal process after the installation process. Therefore, when the base unit 2 is lifted with a fork 100 or the like, the reinforcing member 3 can prevent the base unit 2 from bending. Because the removal frame 15 of the base unit 2 is removed after the work positioner 1 is installed, a large space can be secured around the speed reducer motor 7 and the pillow-shaped bearing unit 8 without compromising the accuracy of the relative positions of the speed reducer motor 7 and the pillow-shaped bearing unit 8. This avoids interference between a workpiece (not shown) and the base unit 2. Therefore, a large workpiece can be attached to the work positioner 1. Ample work space can be secured at the feet, providing a work positioner 1 with excellent workability.

[0070] The present invention is not limited to the above-described embodiment, and includes various modifications to the above-described embodiment without departing from the spirit of the present invention. For example, in the above embodiment, the work positioner 1 is described as supporting welding or assembly work on a workpiece (not shown). However, this is not limited to this, and the work positioner 1 can be used for various purposes, such as rotating a workpiece (not shown) around the output rotation axis A1 to orient the workpiece in an appropriate position or posture.

[0071] In the above embodiment, the reinforcing portions 3 are provided on the upper surfaces 11b, 12b of the long frames 11, 12. However, this is not limiting, and the reinforcing portions 3 may be provided on the lower surfaces of the long frames 11, 12. In the above embodiment, the reinforcing portion 3 is formed in a plate shape. However, the present invention is not limited to this, and any shape can be used as long as it can ensure the rigidity of the base portion 2 (first elongated frame 11).

[0072] In the above embodiment, the case where the base portion 2 is lifted by the fork 100 using the holder 4 has been described. However, this is not limited to this, and for example, the fork 100 may be inserted under the base portion 2 and the base portion 2 may be lifted by the fork 100 as is.

[0073] In the above embodiment, the portion of the base part 2 that is lifted by the fork (carrier) 100 is described as a portion of the base part 2 that is lifted by the fork 100 via the holder 4. However, this is not limited to this, and when the fork 100 is brought into direct contact with the base part 2 to lift it, the portion of the base part 2 that is in contact with the fork 100 is the portion of the base part 2 that is lifted by the fork 100.

[0074] In the above embodiment, a pillow-type bearing unit 8 is provided as a driven part that follows the reducer-equipped motor 7, which is the driving part, and a workpiece (not shown). However, this is not limited to this, and various bearing units can be provided in place of the pillow-type bearing unit 8. A reducer-equipped motor separate from the reducer-equipped motor 7 may be provided in place of the bearing unit. The driven part only needs to be configured to follow the drive part and the workpiece (not shown).

[0075] In the above embodiment, the reinforcement part 3 is fixed to the base part 2 by the bolts 22. This explains the case where the reinforcement part 3 is detachably attached to the base part 2. However, this is not limited to this, and it is sufficient that the reinforcement part 3 is detachably attached to the base part 2. For example, the reinforcement part 3 may be attached to the base part 2 by sliding it in the longitudinal direction or the lateral direction. With this configuration, the reinforcement part 3 will not come off the base part 2 even if a force is applied to the reinforcement part 3 in the vertical direction. Furthermore, the reinforcement part 3 may be fixed to the base part 2 using, for example, a lever or the like.

[0076] In the above embodiment, the removable frame 15 and each fixed frame 16, 17 of the first long frame 11, the first base plate 53 of the first short frame 13, the second base plate 54 of the second short frame 14, each support column 5, 6, and the motor with a reducer 7 are positioned using the positioning pins 27, 65, 76, and 85, respectively. However, this is not limited to this, and it is sufficient if a positioning unit that positions each component is provided. For example, positioning guides may be provided as the positioning units instead of the positioning pins 27, 65, 76, and 85. Each component can be positioned by abutting it against the positioning guide.

[0077] In the above embodiment, the connecting plate 23 and the raising plate 24 are provided on the removable frame 15, and the connecting plate mounting seats 33 are provided on each of the fixed frames 16, 17. However, this is not limited to this, and the arrangement may be reversed. That is, the connecting plate 23 and the raising plate 24 may be provided on each of the fixed frames 16, 17, and the connecting plate mounting seats 33 may be provided on the removable frame 15.

[0078] In the above embodiment, the first long frame 11 is divided into the removable frame 15 and the fixed frames 16, 17. However, this is not limiting, and the first long frame 11 does not have to be divided. The second long frame 12 may also be divided. Both the long frames 11, 12 may also be divided. The lengths of the removable frame 15 and the fixed frames 16, 17 can be determined arbitrarily. However, by providing dividing sections 18 at both ends of each of the long frames 11, 12 in the longitudinal direction as far as possible, it is possible to easily suppress the deflection of each of the long frames 11, 12.

[0079] In the above embodiment, the base portion 2 is elongated in one direction, has a frame-like shape when viewed from the top and bottom, and includes two long frames 11, 12 and two short frames 13, 14. However, this is not limiting, and the shape of the base portion 2 can be any shape. The entire base portion 2 may also be formed in a plate shape.

[0080] Among the embodiments disclosed in this specification, those that are comprised of multiple objects may be integrated, and conversely, those that are comprised of a single object may be separated into multiple objects. Regardless of whether they are integrated, it is sufficient that they are configured to achieve the object of the invention. [Explanation of symbols]

[0081] 1...Work positioner 2...Base 3...Reinforcement section 4...Holder 4a...Carrier insertion hole 5…1st pillar 6…Second pillar 7...Motor with reducer (drive unit) 8... Pillow type bearing unit (follower part) 11...First long frame (base part) 11b…Top surface (surface) 12...Second long frame (base part) 12b…Top surface (surface) 13...First short frame (base part) 14...Second short frame (base part) 15...Removable frame (base part) 15a…Top surface (surface) 16...First fixed frame (base part) 16a…Top surface (surface) 17...Second fixed frame (base part) 17a…Top surface (surface) 18...Divided part 27, 65, 76, 85... Positioning pins (positioning parts) 100...Fork (transportation equipment) A1...Output rotation axis (rotation axis)

Claims

1. In a work positioner that is lifted and transported by a transporting device, A base portion and a first support column and a second support column provided on the base portion; a drive unit provided on the first support column and configured to rotate the workpiece; a driven part that is provided on the second support column and is coaxial with the rotation axis of the drive part and rotates in a driven manner relative to the workpiece; a reinforcing portion provided between the first support column and the second support column of the base portion and at a location where the base portion is lifted by the carrier, the reinforcing portion ensuring rigidity of the base portion; Equipped with Work positioner.

2. The base portion is formed long in one direction, The first support pillar and the second support pillar are provided at both ends of the base portion in the longitudinal direction, respectively.

2. The work positioner of claim 1.

3. The reinforcing portion is detachably provided on the base portion.

3. A work positioner according to claim 1 or claim 2.

4. a holder provided on the reinforcing portion and having a carrier insertion hole into which the carrier is inserted in the short side direction of the base portion; 3. The work positioner of claim 2.

5. The holder is provided on the opposite side of the base portion across the reinforcing portion.

5. The work positioner of claim 4.

6. the holder is provided on the same plane as a plane on which the first support column and the second support column of the base portion are provided; 6. The work positioner of claim 5.

7. The base portion is formed long in one direction, A portion of the base portion is provided so as to be separable in the longitudinal direction.

3. A work positioner according to claim 1 or claim 2.

8. The reinforcing portion is provided so as to straddle the divided portion of the base portion.

8. The work positioner of claim 7.

9. the base portion and the first support pillar, the base portion and the second support pillar, the first support pillar and the driving portion, the second support pillar and the driven portion, and each of the divided portions of the base portion are positioned relative to each other by a positioning portion, 8. The work positioner of claim 7.

10. a base portion that is elongated in one direction and can be separated in the longitudinal direction; a first support column and a second support column provided at both ends of the base portion in the longitudinal direction; a drive unit provided on the first support column and configured to rotate the workpiece; a driven part that is provided on the second support column and is coaxial with the rotation axis of the drive part and rotates in a driven manner relative to the workpiece; a reinforcing portion provided between the first support column and the second support column of the base portion and on the same plane as a plane on which the first support column and the second support column are provided, thereby ensuring rigidity of the base portion; A method for installing a work positioner comprising: an assembly process of integrating the divided base portions and assembling the first support pillar, the second support pillar, the driving portion, the driven portion, and the reinforcing portion; a transporting step of lifting the base portion at the location where the reinforcing portion is provided with a transporting tool after the assembling step, and transporting the base portion in the lifted state; an installation step of installing the base unit at a desired installation location after the transportation step; a removal step of dividing the base portion and removing a part of the base portion after the installation step; having How to install a work positioner.

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