JP2015100890A - Workpiece support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece support device which efficiently carry out processing work by simplifying stage replacement work without exchanging a workpiece support member in response to a workpiece even when a support height for a workpiece rear surface is different depending on a type of a workpiece, and provide a workpiece support device which reduces facility cost by simplifying a structure of the device itself by adjusting a height of the workpiece support member without arranging a lifting mechanism on a movable base which moves in a back and forth direction and a longitudinal direction respectively.SOLUTION: When a workpiece (13) supported on an upper end of a vertical support shaft (91) of lifting workpiece support members (41 and 43, 77 and 79) is pressed down to a position of abutting on reference workpiece support members (37 and 39, 73 and 75) against elasticity of an elastic member (95), movement of the vertical support shaft (91) is restricted by a movement restriction member (97), and the workpiece (13) can be supported or held by the reference workpiece support members (37 and 39, 73 and 75) and the lifting workpiece support members (41 and 43, 77 and 79).

Description

  According to the present invention, when a required processing is performed on a workpiece, the workpiece can be stably positioned by a support member whose support height can be variably adjusted according to the size and shape of the workpiece. The present invention relates to a work support device that can be supported in an automatic manner.

For example, in a workpiece such as a molded resin product after molding, since burrs are integrated on the outer peripheral edge, it is necessary to cut and remove burrs with a deburring tool in order to produce a product. Further, when a workpiece is commercialized, it is necessary to perform various types of processing such as drilling and trimming at a predetermined portion of the workpiece.

When performing such machining processing, the workpiece support device includes a plurality of workpiece support members that position and hold the workpiece so that the machining origin of the workpiece coincides with the machining origin of the machining tool. However, if the workpiece to be machined is different in size or shape, adjust the position and height of multiple workpiece support members according to the type of workpiece each time. There is a need.

For this reason, it takes time and effort to change the setup according to the type of workpiece, and the machining efficiency is poor. This disadvantage can be solved by preparing a plurality of workpiece support devices in which a plurality of workpiece support members are arranged according to the type of workpiece, but has the problem that the equipment cost increases.

As shown in Patent Document 1, the applicant includes at least three workpiece support members that support the lower surface of the workpiece, and the two workpiece support members that are adjacent in the longitudinal direction of the workpiece are used as the remaining workpiece support members. In contrast, the present invention has proposed a workpiece support device that is movable in the front-rear direction perpendicular to the longitudinal direction and in the left-right direction that coincides with the longitudinal direction so that the position can be adjusted.

However, depending on the type of workpiece, since the support height with respect to the back surface of the workpiece differs, in the above-described workpiece support device, it is necessary to replace the workpiece support member in accordance with the workpiece to be processed. Has the problem of time and effort.

This problem can be solved by providing an elevating mechanism on the movable table that moves in the front-rear direction and the left-right direction as described above, and by adjusting the height by moving the work support member up and down according to the type of work. However, there is a problem that the structure of the apparatus itself is complicated by the lifting mechanism and the equipment cost is increased.

JP 2013-52468 A

The problem to be solved is that when the support height on the back side of the workpiece varies depending on the type of workpiece, the workpiece support member must be replaced in accordance with the workpiece, and the setup work requires time and effort. This is the point. In the case where a lifting mechanism is provided on the movable base that moves in the front-rear direction and the left-right direction, and the height of the work support member can be adjusted by moving it up and down according to the type of work, The structure of the apparatus itself is complicated, and the equipment cost is increased.

  The present invention provides a workpiece support device that supports or holds a workpiece by a plurality of standing workpiece support members, wherein the workpiece support member includes a reference workpiece support member having a fixed support height, and an elevation that can be varied in height. The elevating work support member is composed of a work support member, and the up-and-down work support member is supported so as to move in the vertical direction, and the elastic member that urges the vertical support shaft so as to always move upward, A movement restricting member for restricting the movement of the vertical support shaft that has moved downward against the elastic force of the elastic member is provided, and the work supported by the upper end of the vertical support shaft of the elevating work support member is resisted against the elastic force of the elastic member. When the base member is pushed down to a position where it comes into contact with the reference work support member, the movement restricting member restricts the movement of the vertical support shaft, and the work is supported or maintained by the reference work support member and the lift work support member. The most important feature that made it possible.

  The present invention eliminates the need to replace the workpiece support member in accordance with the workpiece, even when the support height on the workpiece back surface varies depending on the type of workpiece. Can be done. In addition, the height of the work support member can be adjusted without providing an elevating mechanism on the movable table that moves in the front-rear direction and the left-right direction, and the structure of the apparatus itself can be simplified to reduce the equipment cost.

It is a perspective view which shows the outline of the workpiece processing apparatus provided with the workpiece | work support apparatus. It is a top view of a workpiece | work support apparatus. It is the front view which looked at the workpiece | work support apparatus from the arrow A direction of FIG. It is explanatory drawing which shows a raising / lowering workpiece support member. It is a center longitudinal cross-sectional view which shows schematic structure of a raising / lowering work support member. It is explanatory drawing which shows the position adjustment state with respect to the front-back direction. It is explanatory drawing which shows the position adjustment state with respect to the left-right direction. It is explanatory drawing which shows the partial support state at the time of mounting the bumper for vehicles on a workpiece | work support apparatus. It is explanatory drawing which shows the state which pushed down the vehicle bumper and was supported by each workpiece | work support member. It is explanatory drawing which shows the movement control state of an up-and-down support shaft at the time of supporting by each workpiece | work support member.

  When the work supported by the upper and lower support shaft upper ends of the lifting work support member is pushed down to a position where it abuts against the reference work support member against the elastic force of the elastic member, the movement restricting member restricts the movement of the vertical support shaft. The best mode is that the work can be supported or held by the reference work support member and the lift work support member.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1 to FIG. 3, a resin molded product deburring device 1 as a workpiece processing device provided with a workpiece support device 5 includes a burr cutting device 3 and a workpiece support device 5 as workpiece processing means.

  The burr cutting device 3 is constituted by, for example, an articulated robot that rotates and swings the connected first and second arms 7 and 9 in a plurality of axial directions. A cutting member 11 as a member is attached. The deburring device 3 is held (supported) by moving and rotating the cutting member 11 in at least three axial directions by swinging and turning the first and second arms 7 and 9. The burr extending in the radial direction is cut and removed by moving along the outer edge of the workpiece.

  As the workpiece processing means, in addition to the deburring device 3, a punching device that drills a predetermined portion of the workpiece, a cutting device that cuts the predetermined portion of the workpiece, a trimming device, or the like may be used. And as a workpiece | work processing means, it is set as the end mill corresponding to the processing aspect with respect to a workpiece | work, a cutting blade, a laser beam output head, etc. Further, the deburring / cutting device 3 as the workpiece machining means may be configured as a three-axis orthogonal traveling type in addition to the articulated industrial robot.

  The workpiece may be any of a resin molded vehicle panel, a vehicle bumper, a press molded metal panel, and the like. In this example, the vehicle bumper 13 is illustrated.

  A first mounting frame 17 that stands up at a predetermined height is provided behind the main body frame 15 of the work support device 5 (on the burr cutting device 3 side), and a main body frame is disposed above the first mounting frame 17. An intermediate portion in the longitudinal direction of the first support frame 19 extending in the 15 longitudinal direction (also referred to as the left-right direction) is attached.

The first support frame 19 is divided into left and right frame portions 19a and 19b at the middle in the longitudinal direction. The left and right frame portions 19a and 19b have the first and second movable bodies 21 and 23 respectively independently in the left and right direction. Supported to move to. The first and second movable bodies 21, 23 have first and second electric motors such as servo motors that have axes in the left-right direction with respect to the corresponding left and right frame portions 19 a, 19 b and can be numerically controlled at one end. 29 and 31 are respectively engaged with feed screws 25 and 27 that are pivotally supported so as to rotate, and are moved independently in the left-right direction as the first and second electric motors 29 and 31 are driven. The

The first and second movable bodies 21, 23 have reference workpiece support members 37, 39 that have an axial line in the vertical direction and whose tip end abuts against and support the rear surface of the vehicle bumper 13. Each is attached so as to be.

In addition, the first and second movable bodies 21 and 23 corresponding to the outside of the reference work support members 37 and 39 have movable work support means 41 and 43 (described later) each having an axis in the vertical direction, and the upper ends of the first and second movable bodies 21 and 23 have reference work pieces. Each of the support members 37 and 39 is attached so as to be located slightly below the upper end.

A front / rear frame 45 extending in the front-rear direction shown in the figure is provided in the front left / right intermediate portion of the main body frame 15 of the work support device 5, and the front / rear frame 45 includes a front / rear movable body 47 shown in the front-rear direction. Supported to move to. The front / rear movable body 47 is pivotally supported so as to rotate with an axis in the front / rear direction with respect to the front / rear frame 45, and a front / rear feed including a numerically controllable front / rear electric motor 49 such as a servo motor connected to one end. Engaged with the screw 51. The front / rear movable body 47 is moved in the front / rear direction as the front / rear electric motor 49 is driven.

The front and rear movable body 47 is provided with a second mounting frame 53 that stands at a predetermined height, and the second mounting frame 53 has an upper portion of a second support frame 55 extending in the left-right direction shown in the drawing. A direction intermediate part is attached.

The second support frame 55 is divided into left and right frame portions 55a and 55b at the middle portion in the longitudinal direction, and the third and fourth movable bodies 57 and 59 are independently formed in the left and right frame portions 55a and 55b. Supported to move to. The third and fourth movable bodies 57 and 59 are pivotally supported so as to rotate in the left and right directions with respect to the corresponding left and right frame portions 55a and 55b, respectively, and can be numerically controlled at one end. The third and fourth electric motors 61 and 63 are connected to each other and meshed with feed screws 65 and 67 that are pivotally supported so as to rotate, and the third and fourth electric motors 61 and 63 are driven in the left-right direction. Moved independently to each other.

The third and fourth movable bodies 57 and 59 are respectively attached with base end portions of attachment arms 69 and 71 that are inclined upward and extend outward, and the distal ends of the attachment arms 69 and 71, respectively. Reference workpiece support members 73 and 75 that have an axial line in the vertical direction and are supported by the front end abutting against the back surface of the vehicle bumper 13 are attached to the respective parts so that the front ends thereof are at the same height.

The mounting arms 69 and 71 corresponding to the insides of the reference work support members 73 and 75 have movable work support means 77 and 79, which will be described later, each having an axis in the vertical direction, and upper ends of the reference work support members 73 and 75. Each is attached so as to be located slightly above the upper end.

The movable work supporting means 41, 43, 77, 79 will be described. These movable work support means 41, 43, 77 and 79 are substantially the same in structure except for the axial length and size. In FIGS. Of the means 77 and 79, one movable work support means 77 is shown, and the details of the other movable work support means 41 and 43 are omitted.

As shown in FIGS. 4 and 5, the shaft support member 89 of the movable work support means 77 has a shaft support hole 89 a having an axial line in the vertical direction at the center, and is fixed to the upper part of the mounting plates 81 and 83. . In the shaft support hole 89a of the shaft support member 89, a vertical support shaft 91 having an axial line in the vertical direction and formed with a vent passage 91a communicating in the vertical direction is supported so that the vertical support shaft 91 slides in the vertical direction. Is done.

A suction pad 93 made of elastically deformable silicon rubber or the like is attached to the upper end portion of the vertical support shaft 91 so as to communicate with the air passage 91a. The lower end portion of the upper and lower support shaft 91 is connected to the negative pressure generating means via an open / close valve (none of which is shown).

An elastic member 95 such as a compression spring is interposed on the vertical support shaft 91 between the shaft support member 89 and the suction pad 93, and the vertical support shaft 91 is always moved upward along the axis by the elastic force of the elastic member 95. Be energized.

A movement restricting member 97 that presses against the outer peripheral surface of the upper and lower support shafts 91 projecting downward from the shaft support member 89 to restrict the movement is provided on the lower surface side of the upper and lower support shafts 91. It is attached so that it may be located in the direction. The movement restricting member 97 is provided on an operating member 97a such as an electromagnetic solenoid or an air cylinder having an axis in a direction orthogonal to the axis of the vertical support shaft 91, and an operating shaft of the operating member 97a. It is comprised by the press contact member 97b which press-contacts to the outer peripheral surface of this, and controls a movement.

The actuating member 97a always moves the pressure contact member 97b to a position where it comes into pressure contact with the outer peripheral surface of the vertical support shaft 91 to restrict the vertical support shaft 91 from moving up and down. When an operation switch (not shown) is operated during setting, the pressure contact member 97b is moved to a position away from the outer peripheral surface of the vertical support shaft 91 to allow the vertical support shaft 91 to be lowered. When the operation switch is released when the vehicle bumper 13 is set on the workpiece support device 5, the operation member 97a is operated to move the pressure contact member 97b against the outer peripheral surface of the vertical support shaft 91 and move. To regulate.

A bearing portion 97c that is in sliding contact with a part of the outer peripheral surface of the vertical support shaft 91 and has a low coefficient of friction, such as a fluororesin, is disposed below the shaft support member 89 across the vertical support shaft 91. May be provided, and when the pressure contact member 97b is pressed against the outer peripheral surface of the vertical support shaft 91, the vertical support shaft 91 is clamped in cooperation with the bearing portion 97c to restrict the movement.

Further, the movement restricting member 97 is configured to restrict the movement of the vertical support shaft 91 by pressing the press contact member 97b against the outer peripheral surface of the vertical support shaft 91. However, the movement restricting member 97 is clamped to the operating shaft of the operating member 97a via a link. A gripping claw (not shown) may be connected, and the operation member 97 may be operated to open and close the gripping claw so that the outer peripheral surface of the vertical support shaft 91 can be gripped to restrict movement.

Furthermore, when the operation switch is operated when the vehicle bumper 13 is set on the work support device 5 and the vertical support shaft 91 is pushed down, all the movable work support means 41 are provided. The movement restricting members 97 provided at 43, 77 and 79 are operated as described above to restrict or enable the movement of the vertical support shaft 91.

Next, the outline of the deburring process by the resin molded product deburring apparatus 1 configured as described above and the details of the work support (holding) action of the vehicle bumper 13 by the work support apparatus 5 will be described.

First, the outline of the deburring operation by the resin molded product deburring device 1 will be described. The operator can support (hold) the rear reference workpiece support member 37 in accordance with the width in the longitudinal orthogonal direction of the vehicle bumper 13. The front and rear positions of the reference work support members 73 and 75 and the lift work support members 77 and 79 with respect to 39 and the lift work support members 41 and 43 are adjusted. (See Figure 6)

That is, the front-rear electric motor 49 is driven and controlled in accordance with the width in the longitudinal orthogonal direction of the vehicle bumper 13 to move the front-rear movable body 47 forward or backward, so that the reference work support members 73 and 75 and the lift work support members 77 and 79 are moved. The support position of the vehicle bumper 13 is adjusted.

Further, the operator can adjust the reference work support members 37 and 39 and the lift work support members 41 and 43 in the rear according to the longitudinal width of the vehicle bumper 13, and the reference work support members 73 and 75 and the lift work support members in the front. 77 and 79 are moved in the longitudinal direction to adjust the support positions in the front and rear in the longitudinal direction. (See Figure 7)

That is, the first and second electric motors 29 and 31 are driven and controlled according to the longitudinal width of the rear portion of the vehicle bumper 13 to move the first and second movable bodies 21 and 23 closer to or away from each other in the longitudinal direction. It moves to a direction and adjusts the support position by the reference | standard workpiece support members 37 * 39 and the raising / lowering work support members 41 * 43.

Similarly, the third and fourth electric motors 61 and 63 are driven and controlled in accordance with the longitudinal width of the front portion of the vehicle bumper 13 so that the third and fourth movable bodies 57 and 59 approach each other in the longitudinal direction. It moves to the direction which moves away, and the support position by the reference | standard workpiece support members 73 * 75 and the raising / lowering work support members 77 * 79 is adjusted.

Then, as described above, the worker supports the workpiece support device in which the support positions of the reference workpiece support members 37 and 39 and the lift workpiece support members 41 and 43, the reference workpiece support members 73 and 75, and the lift workpiece support members 77 and 79 are adjusted. The upper end of the reference work support members 37 and 39 and the lift work support members 41 and 43, the reference work support members 73 and 75, and the lift work support members 77 and 79 are brought into contact with the back surface of the vehicle bumper 13. Set to be supported.

In each of the lift work support members 41, 43, 77, and 79, the back surface of the vehicle bumper 13 is suctioned by the suction pad 93 to regulate the displacement.

When the machining start switch (not shown) is turned on in the above state, the burr cutting device 3 performs the first and the second based on the machining data stored in advance in the storage area (none of which is shown) of the control means. After the second arm 7, 9 is controlled to rotate and swing, the cutting member 11 is moved to the processing origin at the outer edge of the vehicle bumper 13, and then the first and second arms 7, 9 are cut along with the rotation and swing. Deburring is performed by cutting the burrs while moving the member 11 along the outer edge.

Next, the operation of adjusting the support height of the vehicle bumper 13 by the lifting work support members 41, 43, 77, 79 will be described. In the vehicle bumper 13, the degree of curvature and the longitudinal direction according to the type of vehicle to be mounted Further, since the widths in the longitudinal orthogonal direction are different, it is necessary to adjust the support height by the elevating work support members 41, 43, 77, 79.

In this example, the workpiece support device in which the support positions of the reference workpiece support members 37 and 39 and the lift workpiece support members 41 and 43, the reference workpiece support members 73 and 75, and the lift workpiece support members 77 and 79 are adjusted as described above. When placing and setting the vehicle bumper 13 with respect to 5, the operator operates the operation switch to operate the operation member 97 a in each of the lifting work support members 41, 43, 77, 79 and press-contact member 97b can be moved up and down apart from the outer peripheral surface of the vertical support shaft 91. At this time, the vertical support shaft 91 is moved to the upper position by the elastic force of the elastic member 95 in the above state.

In this state, the worker places the vehicle bumper 13 on the work support device 5 so that the upper ends of the lifting work support members 41, 43, 77, and 79 are in contact with and adsorbed to the back surface of the vehicle bumper 13 and then the vehicle. The bumper 13 is pushed down until the upper ends of the respective reference workpiece support members 37, 39, 73, and 75 come into contact with the back surface thereof. (See Figure 8)

At this time, the vertical support shafts 91 of the elevating work support members 41, 43, 77, and 79 move downward against the elastic force of the elastic member 95 along with the above-mentioned pressing down, and are moved relative to the back surface of the vehicle bumper 13. Thus, the upper ends of the reference work support members 37, 39, 73 and 75 are brought into contact with each other. (See Figure 9)

When the operator releases the operation switch and stops the operation of the operation member 97a in each of the lifting work support members 41, 43, 77, 79, the pressure contact member 97b is pressed against the outer peripheral surface of the vertical support shaft 91. The moving state of the vertical support shaft 91 with respect to the lower side is maintained. (See Figure 10)

As a result, the vehicle bumper 13 is stabilized by the four reference workpiece support members 37, 39, 73, and 75 and the four lift workpiece support members 41, 43, 77, and 79 whose heights are adjusted with respect to the back surface thereof. Supported by posture.

This embodiment simplifies the vertical adjustment mechanism and lowers the cost of the apparatus compared to a conventional work support apparatus that adjusts the work support member to move up and down by the elevating mechanism so as to contact the back surface of the vehicle bumper 13. Can do.

DESCRIPTION OF SYMBOLS 1 Resin molded product deburring apparatus as a workpiece processing apparatus 3 Burr cutting apparatus as a workpiece processing means 5 Work support apparatuses 7 and 9 First and second arms 11 Cutting member 13 as a workpiece processing member 13 Vehicle bumper 15 as a workpiece Body frame 17 First mounting frame 19 First support frames 19a and 19b Left and right frame parts 21 and 23 First and second movable bodies 25 and 27 Feed screws 29 and 31 First and second electric motors 37 and 39 Reference work support member 41/43 movable work support means 45 front / rear frame 47 front / rear movable body 49 front / rear electric motor 51 front / rear feed screw 53 second mounting frame 55 second support frame 55a / 55b left / right frame part 57/59 third and fourth movable body 61 / 63 Third and fourth electric motors 65 and 67 Feed screws 69 and 71 Mounting arm 73 and 5 reference work supporting members 77, 79 movable workpiece support means 89 pivot member 89a shaft supporting hole 91 vertically support shaft 91a exhaust hole 93 suction pads 95 elastic member 97 movement restricting member 97a actuating member 97b pressing member 97c bearing part

The present invention provides a workpiece support device that supports or holds a workpiece back surface by a plurality of standing workpiece support members, wherein the workpiece support member is variable in height with a reference workpiece support member having a fixed support height. Consists of lifting work support members,
The reference workpiece support member includes at least a pair provided to be individually movable in the longitudinal direction of the workpiece, and the lifting workpiece support member is provided to be movable in the longitudinal direction of the workpiece integrally with the reference workpiece support member. A vertical support shaft supported so as to move in the vertical direction, an elastic member that constantly urges the vertical support shaft to move upward, and a downward movement against the elastic force of the elastic member. When a movement restricting member for restricting the movement of the vertical support shaft is provided, and the work supported by the upper end of the vertical support shaft of the elevating work support member is pushed down to the position where it abuts against the reference work support member against the elastic force of the elastic member The main feature is that the movement of the upper and lower support shafts is restricted by the movement restricting member so that the work can be supported or held by the reference work supporting member and the lifting work supporting member. .

The first and second movable bodies 21, 23 have reference workpiece support members 37, 39 on the other end side that have an axis line in the vertical direction and whose tip end abuts and supports the back surface of the vehicle bumper 13. Each tip is attached so that the tips are at the same height.

The third and fourth movable bodies 57 and 59 are respectively attached with base end portions of attachment arms 69 and 71 that are inclined upward and extend outward, and the distal ends of the attachment arms 69 and 71, respectively. The reference workpiece support members 73 and 75 on the one end side, which have an axis in the vertical direction and whose tip is in contact with and supported by the rear surface of the vehicle bumper 13, have their tips at the same height. Each can be attached.

Claims (5)

In a work support device that supports or holds a work by a plurality of work support members erected,
The work support member is composed of a reference work support member having a constant support height and a lifting work support member whose height is variable,
The lifting work support member includes a vertical support shaft that is supported so as to move in the vertical direction, an elastic member that constantly biases the vertical support shaft so as to move upward, and an elastic force of the elastic member. And a movement restricting member for restricting the movement of the vertical support shaft that has moved downward,
When the work supported by the upper and lower support shaft upper ends of the lifting work support member is pushed down to a position where it abuts against the reference work support member against the elastic force of the elastic member, the movement restricting member restricts the movement of the vertical support shaft. A workpiece support device capable of supporting or holding a workpiece by the reference workpiece support member and the lift workpiece support member. In claim 1,
A workpiece support device in which at least one of the reference workpiece support member and the lift workpiece support member is provided with an adsorption member that adsorbs the lower surface of the workpiece on the upper part. In claim 1,
At least one of the reference workpiece support member and the lift workpiece support member is moved to at least one of the longitudinal direction and longitudinal orthogonal direction of the workpiece, so that the width can be adjusted according to the longitudinal direction and longitudinal orthogonal direction of the workpiece. Support device. In claim 1,
The movement restricting member of the elevating work supporting member is a work supporting device including an operating member and a press contact member that presses against the outer peripheral surface of the vertical support shaft in accordance with the operation of the operating member and restricts the movement. In claim 1,
The movement restricting member of the elevating work supporting member is a work supporting device including an operating member and a clamping member that clamps the outer peripheral surface of the vertical support shaft in accordance with the operation of the operating member and restricts the movement.

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