Workpiece positioning device

Abstract

The workpiece positioning device comprises a driving unit, a placing seat, a first positioning component and a second positioning component, wherein the first positioning component can move along a first direction relative to the placing seat; the second positioning component can move along a second direction relative to the placing seat; the placing seat is provided with a workpiece placing position; a track structure is arranged on the first positioning component, a moving structure is arranged on the second positioning component, the track structure has extension distances in the first direction and the second direction, and the moving structure is limited to move along the track of the track structure; in the process that the first positioning component moves in the first direction, the moving structure is forced to move along the track of the track structure to generate displacement in the second direction, and meanwhile the second positioning component is forced to move in the second direction. According to the workpiece positioning device, bidirectional positioning is achieved through a single power source, and cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece positioning devices, in particular to a workpiece positioning device which realizes bidirectional positioning with a single power source. Background Art

[0002] A fixture for positioning a long, rectangular workpiece is currently used. In addition to supporting and positioning the workpiece along its thickness, the fixture also requires clamping and positioning along its length and width. To achieve this, the fixture utilizes a limit cylinder to position the workpiece along its length, and an abutment block driven by a drive cylinder to position the workpiece along its width.

[0003] The existing fixture requires separate power sources for positioning the workpiece in the length direction and the width direction, resulting in a high fixture cost. Utility Model Content

[0004] The purpose of the utility model is to provide a workpiece positioning device that can realize bidirectional positioning with a single power source, thereby effectively reducing costs.

[0005] The workpiece positioning device provided by the utility model includes a driving unit, a placement seat, a first positioning member movable along a first direction relative to the placement seat, and a second positioning member movable along a second direction relative to the placement seat, the placement seat being provided with a workpiece placement position; the driving unit drives the first positioning member to move, or the driving unit drives the second positioning member to move; a track structure is provided on the first positioning member, and a moving structure is provided on the second positioning member, the track structure having an extension distance in the first direction and the second direction, and the moving structure is restricted to moving along the track of the track structure; during the movement of the first positioning member along the first direction, the moving structure is forced to move along the track of the track structure to generate a displacement in the second direction, and at the same time forces the second positioning member to move along the second direction.

[0006] It can be seen from the above scheme that since the track structure and the first positioning member are relatively fixed in position, and the moving structure and the second positioning member are relatively fixed in position, when the first positioning member moves along the first direction, the moving structure is restricted to move along the track of the track structure, and the second positioning member also moves forward or backward in the second direction as the moving structure moves, and vice versa. After the workpiece is placed in the workpiece placement position, the workpiece is blocked by the placement seat on one side in the first direction and on one side in the second direction. Thereafter, driven by the driving unit, the first positioning member in the first direction and the second positioning member in the second direction will move forward synchronously and approach the workpiece. Finally, under the clamping cooperation with the placement seat, the workpiece is restricted in positioning in both directions. This setting can reduce the setting of the power source on the workpiece positioning device and effectively reduce the manufacturing cost of the device.

[0007] A further solution is that the initial section and / or the final section of the track structure extends along the first direction.

[0008] It can be seen from the above that the initial segment and / or the final segment that do not have the tendency to extend in the second direction will hinder the movement of the movable structure along the second direction. Under this setting, the second positioning member can stably maintain the current position regardless of the positioning position or the released position, ensuring that the second positioning member in the positioning position continuously and stably restricts and positions the workpiece, and / or ensuring that the second positioning member in the released position does not hinder and affect the picking and placing of the workpiece.

[0009] A further solution is that the middle section of the track structure extends along a straight line inclined to the second direction.

[0010] As can be seen from the above, under this setting, the second positioning member is forced to move along the second direction mainly by the trajectory of the middle section of the trajectory structure. The middle section extends along a straight line, which enables the moving member and the second positioning member to move at a uniform speed and with less resistance and smoother process.

[0011] A further solution is that the first positioning member gradually approaches the workpiece placement position when moving in the positive direction of the first direction, and the track structure restricts the moving structure and the second positioning member from moving in the positive direction of the second direction and gradually approaches the workpiece placement position; along the positive direction of the first direction, the beginning, middle and end sections of the track structure are arranged in sequence; along the positive direction of the second direction, the end, middle and beginning sections of the track structure are arranged in sequence.

[0012] As can be seen from the above, this arrangement ensures that the first positioning member and the second positioning member can approach the workpiece or move away from the workpiece at the same time, thereby achieving simultaneous positioning and simultaneous release.

[0013] Another further solution is that the track structure is set as a concave structure, the moving structure is set as a convex structure, and the convex structure is located in the concave structure.

[0014] A further solution is that the recessed structure is configured as a track hole, and the protruding structure includes a roller, which is disposed in the track hole.

[0015] As can be seen above, the recessed structure is a hole or groove formed by machining along the track, while the protruding structure is any protruding structure that can protrude from a surface and fit into the recessed structure, such as a protruding column, preferably a raised roller. The recessed structure effectively restricts the movement of the protruding structure to the track, simplifies machining, and reduces costs. Using rollers for the protruding structure improves the smoothness of movement within the recessed structure.

[0016] A further solution is that a first side wall surface and a second side wall surface are respectively provided on both sides of the width of the track hole, and the first side wall surface and the second side wall surface both extend along the track; the width of the track hole is greater than the outer diameter of the roller; when the first positioning member moves in the forward direction in the first direction, the wheel surface of the roller cooperates with the first side wall surface; when the first positioning member moves in the reverse direction in the first direction, the wheel surface of the roller cooperates with the second side wall surface.

[0017] As can be seen from the above, in reality, the roller cannot simultaneously engage with both side surfaces of the track hole. By setting the first and second side walls on both sides of the track hole along the track, and engaging with the first and second side walls respectively when the roller moves forward or backward, the roller can move along the track hole both forward and backward.

[0018] A further solution is that the first positioning member includes a first positioning member and a linkage member, the first positioning member is used to limit the workpiece from a first direction, the track hole is provided on the linkage member, and the linkage member is adjustably mounted on the first positioning member along the second direction and / or the first direction; the second positioning member includes a second positioning member, the second positioning member is used to limit the workpiece from a second direction, and the roller is mounted on the second positioning member.

[0019] As can be seen from the above, since the first positioning component also needs to be assembled with the sliding mechanism set along the first direction, if a track hole is set on the first positioning component, the roller needs to be placed into the track hole along the height direction. Although the number of parts is reduced, it is more difficult to assemble the same component in two directions. For this reason, the present invention chooses to set the track hole on a linkage component other than the first positioning component to reduce the difficulty of assembly. Furthermore, the matching relationship between the track hole and the roller is more precise. In other words, it is better to adjust and calibrate after assembly. For this reason, the present invention also sets the linkage component in a manner that is adjustable along the first direction and / or the second direction. After the linkage component is assembled to the first positioning component, the position of the linkage component, that is, the positional relationship between the track hole and the roller, can be further adjusted.

[0020] A further solution is that the placement seat includes a first blocking portion and a second blocking portion fixedly arranged around the workpiece placement position, the first blocking portion is arranged opposite to the first positioning component in the first direction, and the second blocking portion is arranged opposite to the second positioning component in the second direction.

[0021] As can be seen above, since the workpiece to be positioned is rectangular and has a fixed outer contour, a four-way movable structure is not necessary for the workpiece positioning device. To this end, a fixed first and second stopper are provided on the placement seat. When the drive unit is activated, the first and second positioning members advance, respectively securing the workpiece with the first and second stoppers from opposite sides in corresponding directions. This simplifies the device structure, reduces manufacturing difficulty and cost, and provides more stable and effective positioning.

[0022] Another further solution is that the workpiece positioning device is applied to a carrier or a fixture, a first piece picking avoidance hole is set on the placement seat, and a second piece picking avoidance hole is set on the first positioning component or the second positioning component. The first piece picking avoidance hole and the second piece picking avoidance hole are arranged opposite to each other and are respectively connected to the opposite sides of the workpiece placement position.

[0023] As can be seen from the above, the workpiece positioning device can be used as a carrier for an automated production line or a fixture for processing equipment to achieve its positioning function, thereby reducing the manufacturing cost of the automated production line or equipment. Furthermore, to avoid interference with the retrieval robot, a pair of opposing retrieval avoidance holes are provided on the placement seat and a positioning member. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the first embodiment of the workpiece positioning device of the utility model from the first perspective.

[0025] Figure 2 This is a structural diagram of the workpiece positioning device of the first embodiment of the present invention from a second perspective.

[0026] Figure 3 This is a structural diagram of the workpiece positioning device of the first embodiment of the present invention from a third perspective.

[0027] Figure 4 This is a structural diagram of the track hole and roller of the first embodiment of the workpiece positioning device of the present utility model.

[0028] Figure 5 This is a partial structural diagram of the first embodiment a of the workpiece positioning device of the present invention in a working state.

[0029] Figure 6 This is a partial structural diagram of the working state of the first embodiment b of the workpiece positioning device of the present invention.

[0030] Figure 7 Schematic diagram of the track hole and roller of the second embodiment of the workpiece positioning device of the present invention.

[0031] Figure 8 Schematic diagram of the track hole and roller of the third embodiment of the workpiece positioning device of the present invention. DETAILED DESCRIPTION

[0032] First embodiment of the workpiece positioning device

[0033] The workpiece positioning device of the utility model can be applied to a carrier and a fixture.

[0034] See also Figures 1 to 3 The workpiece positioning device of this embodiment includes a fixed seat 1, a driving unit 2, a first slide rail assembly 3, a second slide rail assembly 4, a first positioning member, a second positioning member and a placement seat 8. The first positioning member includes a first positioning component 51 and a linkage component 6, and the second positioning member includes a second positioning component 52 and a roller 7.

[0035] The placement seat 8 is fixedly set on the fixed seat 1, the driving unit 2, the first slide rail assembly 3 and the second slide rail assembly 4 are all installed on the fixed seat 1, the first positioning component 51 is connected to the driving unit 2 and the first positioning component 51 is connected to the first slide rail assembly 3, the second positioning component 52 is connected to the second slide rail assembly 4, and the linkage component 6 installed on the first positioning component 51 cooperates with the roller 7 installed on the second positioning component 52.

[0036] The x-axis direction shown in the figure is the first direction of the present invention, and the y-axis direction shown in the figure is the second direction of the present invention. The first direction is the width direction of the workpiece positioning device, and the second direction is the length direction of the workpiece positioning device. That is, the first direction and the second direction are perpendicular to each other. In addition, the positive direction of the x-axis indicates the positive direction of the first direction in the present invention, the negative direction of the x-axis indicates the negative direction of the first direction in the present invention, the positive direction of the y-axis indicates the positive direction of the second direction in the present invention, and the negative direction of the y-axis indicates the negative direction of the second direction in the present invention.

[0037] The placement seat 8 is provided with a workpiece placement position 80 which is open upward and has a rectangular inner contour, and the placement seat 8 further includes a first blocking portion 81 and a second blocking portion 82 which are provided around the workpiece placement position 80. Figure 3 The first blocking portion 81 and the first positioning component 51 respectively block the workpiece placement position 80 from the positive and negative directions of the first direction, and the second blocking portion 82 and the second positioning component 52 respectively block the workpiece placement position 80 from the positive and negative directions of the second direction.

[0038] Also, see Figure 2 The placement seat 8 has a first access hole 819 formed on the first blocking portion 81, and a second access hole 519 formed on the first positioning member 51. The first and second access holes 819 and 519 are positioned opposite each other in the first direction and communicate with opposite sides of the workpiece placement position 80. The first access hole 819 extends through the first blocking portion 81 in the first direction, while the second access hole 519 is formed as a notch in the first positioning member 51. This arrangement prevents interference between the first blocking portion 81 and the first positioning member 51 from the access robot.

[0039] Preferably, the first piece-taking avoidance hole 819 and the second piece-taking avoidance hole 519 are arranged on opposite sides of the workpiece in the width direction as in this embodiment.

[0040] Of course, in other embodiments, the first piece picking avoidance hole and the second piece picking avoidance hole can also be set on opposite sides of the length direction of the workpiece. In this case, the first piece picking avoidance hole needs to be set on the second blocking part and the second piece picking avoidance hole needs to be set on the second positioning component, and the structures of the second blocking part and the second positioning component also need to be adaptively adjusted accordingly.

[0041] The drive unit 2 and the first slide rail assembly 3 are both arranged in a first direction and are spaced apart along the second direction. The drive unit 2 is a cylinder or a motor, and the first slide rail assembly 3 includes a first slide rail 31 and a first slider 32 that slide together along the first direction. The main body of the drive unit 2 and the first slide rail 31 are fixedly connected to the fixed seat 1. The length direction of the first positioning component 51 is the second direction, and the output end of the drive unit 2 and the first slider 32 are both connected to the bottom surface of the first positioning component 51, and in the second direction, the output end of the drive unit 2 and the first slider 32 are respectively connected to the opposite sides of the first positioning component 51. In this way, after the drive unit 2 is driven, the drive unit 2 drives the first positioning component 51 to move forward in the positive direction of the first direction to approach the workpiece placement position 80, or to retreat in the reverse direction of the first direction away from the workpiece placement position 80, and the first slider 32 slides relative to the first slide rail assembly 3, and the first slide rail assembly 3 coordinates the movement of the first positioning component 51 to guide.

[0042] The second slide rail assembly 4 includes a second slide rail 41 and a second slider 42 that slide together along the second direction. The second slide rail 41 is fixedly connected to the fixed seat 1, and the second slider 42 is connected to the bottom surface of the second positioning component 52. The second positioning component 52 can move forward in the positive direction of the second direction to approach the workpiece placement position 80, or retreat in the reverse direction of the second direction to move away from the workpiece placement position 80.

[0043] The linkage component 6 is a plate member extending along the plane of the first and second directions. The linkage component 6 is connected to the upper side of the first positioning component 51 via four elongated holes 69 extending along the second direction. Furthermore, four screws are passed through the four elongated holes 69 and then fastened to the screw holes of the first positioning component 51, or four bolts are passed through the four elongated holes 69 and the through-holes of the first positioning component 51 and then fastened with nuts, thereby allowing the position of the linkage component 6 to be adjusted along the second direction. The linkage component 6 is provided with track holes 60 extending through opposite sides thereof along its plate thickness direction, i.e., the z-axis direction shown in the figure. Track holes 60 represent the track structure and recessed structure of the present invention.

[0044] Combine Figure 4Track hole 60 includes an initial segment 601, a middle segment 602, and an end segment 603, which are sequentially connected along its extended trajectory. Initial segment 601 and end segment 603 both extend along a straight line in the first direction, while middle segment 602 extends along a straight line oblique to the first and second directions. Furthermore, along the positive direction of the first direction (the positive x-axis in the illustration), initial segment 601, middle segment 602, and end segment 603 are sequentially arranged; along the positive direction of the second direction (the positive y-axis in the illustration), end segment 603, middle segment 602, and initial segment 601 are sequentially arranged. This shows that the trajectory of track hole 60 extends in both the first and second directions.

[0045] Furthermore, a first sidewall surface 61 and a second sidewall surface 62 are respectively provided on either side of the width of the track hole 60. Both the first sidewall surface 61 and the second sidewall surface 62 extend along a predetermined "straight-oblique-straight" trajectory. The width direction of the track hole 60 is perpendicular to its through-direction and perpendicular to the extension direction of the segment in which it is located. For example, the width direction of the initial segment 601 is the second direction.

[0046] The roller 7 is the movable structure and protruding structure of the present invention. The roller 7 is connected to the upper side of the second positioning member 52 and protrudes from the upper surface of the second positioning member 52 along the direction of the track hole 60. The rotation axis of the roller 7 is perpendicular to the first direction and the second direction.

[0047] The roller 7 is placed in the track hole 60, so the roller 7 is restricted to move along the track of the track hole 60. In addition, the width of the track hole 60 is larger than the outer diameter of the roller 7. When the roller 7 moves forward or backward in the track hole 60, the wheel surface of the roller 7 only cooperates with one of the first side wall surface 61 and the second side wall surface 62.

[0048] Recombination Figures 4 to 6 When the driving unit 2 is working, the first positioning component 51 and the linkage component 6 will move along the first direction; due to the position restriction of the second slide rail 41 on the second slider 42, the second positioning component 52 can only move back and forth along the second direction, and the roller 7 forces the second positioning component 52 to move along the second direction under the guidance of the track of the track hole 60.

[0049] Figure 5 In the working state a shown, the first positioning component 51 and the second positioning component 52 are both in positioning positions closer to the workpiece placement position 80. At this time, the first positioning component 51 and the second positioning component 52 limit the workpiece 9 from the first direction and the second direction respectively. At this time, in the second direction, the roller 7 is in the first position y1 closer to the workpiece placement position 80.

[0050] from Figure 5 The working state shown is Figure 6During the b working state, the driving unit 2 drives the first positioning component 51 to retreat in the opposite direction of the first direction. During the retreat process, the second side wall surface 62 of the track hole 60 abuts against the wheel surface of the roller 7. When the roller 7 passes the middle section 602, the inclined second side wall surface 62 forces the roller 7 and the second positioning component 52 on which the roller 7 is installed to retreat in the opposite direction of the second direction.

[0051] Until arrival Figure 6 In the working state b shown, at this time, in the second direction, the roller 7 is at the second position y2 relatively far away from the workpiece placement position 80. At this time, the first positioning member 51 and the second positioning member 52 have both reached the release position away from the workpiece 9 in their respective directions.

[0052] Vice versa, from Figure 6 The working state shown in b is Figure 5 During the working state a, the driving unit 2 drives the first positioning component 51 to move forward in the positive direction of the first direction. During the forward movement, the first side wall surface 61 of the track hole 60 abuts against the wheel surface of the roller 7. When the roller 7 passes the middle section 602, the inclined first side wall surface 61 forces the roller 7 and the second positioning component 52 on which the roller 7 is installed to move forward together in the positive direction of the second direction.

[0053] Until arrival Figure 5 In the working state shown in FIG. 1 , in the second direction, the roller 7 is at the first position y1 relatively close to the workpiece placement position 80. At this time, the first positioning member 51 and the second positioning member 52 have both reached their respective positioning positions abutting the workpiece 9 in the corresponding directions.

[0054] It can be seen that the present invention only needs to set up one driving unit 2 to realize that the positioning components in two directions will simultaneously restrict the positioning or release the workpiece. This arrangement can reduce the setting of the power source on the workpiece positioning device and effectively reduce the manufacturing cost of the device.

[0055] Second embodiment of the workpiece positioning device

[0056] See also Figure 7 and compare Figure 4 , different from the previous embodiment, in this embodiment, in the track hole, the extension direction of the end section and the middle section are consistent, and both extend along a straight line inclined to the first direction and the second direction.

[0057] Third embodiment of the workpiece positioning device

[0058] See also Figure 8 and compare Figure 4 as well as Figure 7 , different from the above two embodiments, in this embodiment, the overall trajectory of the trajectory hole 903 is a straight line inclined to the first direction and the second direction.

[0059] In the first embodiment, the track structure serves as the active element and the moving structure serves as the driven element. In other embodiments, the driving unit drives the second positioning member. In this configuration, the moving structure serves as the active element and the track structure serves as the driven element.

[0060] In other embodiments, the recessed structure is configured as a track groove.

[0061] In other embodiments, the protruding structure is configured as a cylinder.

[0062] In other embodiments, the track structure is configured as a slide rail, and the moving structure is configured as a slider.

[0063] In other embodiments, the trajectory of the trajectory structure includes arc segments.

[0064] In addition, in the present invention, the protruding structure refers to any protruding structure that protrudes from the second positioning component and can fit into the recessed structure, such as a convex column, a boss, a pulley or a convex ball, etc., preferably the raised roller in the first embodiment.

[0065] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A workpiece positioning device, comprising a drive unit, a placement seat, a first positioning member movable in a first direction relative to the placement seat, and a second positioning member movable in a second direction relative to the placement seat, wherein the placement seat is provided with a workpiece placement position; Its characteristics are: A track structure is provided on the first positioning member, and a moving structure is provided on the second positioning member, wherein the track structure has an extension distance in the first direction and the second direction, and the moving structure is restricted to move along the track of the track structure; The driving unit drives the first positioning member to move, and during the movement of the first positioning member along the first direction, the moving structure is forced to move along the track of the track structure to generate displacement in the second direction, and at the same time forces the second positioning member to move along the second direction, or, The driving unit drives the second positioning member to move. During the movement of the second positioning member along the second direction, the moving structure is forced to move along the track of the track structure to generate displacement in the second direction, and at the same time forces the first positioning member to move along the first direction.

2. The workpiece positioning device according to claim 1, characterized in that: The initial section and / or the final section of the track structure extends along the first direction.

3. The workpiece positioning device according to claim 2, characterized in that: The middle section of the track structure extends along a straight line inclined to the second direction.

4. The workpiece positioning device according to claim 3, characterized in that: The first positioning member gradually approaches the workpiece placement position when moving along the positive direction in the first direction, and the second positioning member gradually approaches the workpiece placement position when moving along the positive direction in the second direction; Along the positive direction of the first direction, the initial section, the middle section and the final section are arranged in sequence; Along the positive direction in the second direction, the end section, the middle section and the beginning section are arranged in sequence.

5. The workpiece positioning device according to any one of claims 1 to 4, characterized in that: The track structure is configured as a concave structure, the moving structure is configured as a convex structure, and the convex structure is located in the concave structure.

6. The workpiece positioning device according to claim 5, characterized in that: The recessed structure is configured as a track hole, and the protruding structure includes a roller, which is disposed in the track hole.

7. The workpiece positioning device according to claim 6, characterized in that: A first side wall surface and a second side wall surface are respectively provided on both sides of the width of the track hole, and the first side wall surface and the second side wall surface both extend along the track; The width of the track hole is greater than the outer diameter of the roller; When the first positioning member moves in a positive direction in the first direction, the wheel surface of the roller cooperates with the first side wall surface; When the first positioning member moves in the opposite direction of the first direction, the wheel surface of the roller cooperates with the second side wall surface.

8. The workpiece positioning device according to claim 6, characterized in that: The first positioning member includes a first positioning component and a linkage component, the first positioning component is used to limit the workpiece from the first direction, the track hole is provided on the linkage component, and the linkage component is adjustably mounted on the first positioning component along the second direction and / or the first direction; The second positioning member includes a second positioning component, the second positioning component is used to limit the workpiece from the second direction, and the roller is installed on the second positioning component.

9. The workpiece positioning device according to claim 8, characterized in that: The placement seat includes a first blocking portion and a second blocking portion fixedly arranged around the workpiece placement position. The first blocking portion is arranged opposite to the first positioning component in the first direction, and the second blocking portion is arranged opposite to the second positioning component in the second direction.

10. The workpiece positioning device according to any one of claims 1 to 4, characterized in that: The workpiece positioning device is applied to a carrier or a fixture, a first piece-picking avoidance hole is provided on the placement seat, a second piece-picking avoidance hole is provided on the first positioning member or the second positioning member, the first piece-picking avoidance hole and the second piece-picking avoidance hole are arranged opposite to each other and are respectively connected to the opposite sides of the workpiece placement position.

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