TW201503990A - Clamping mechanism and method for turnovering and translating workpiece thereof - Google Patents

Abstract

A clamping mechanism includes a base, two clutches, and two clamping shaft. Two clutches disposes movably on the base. Every clutch has a surface and a shaft hole. Two surface face to face each other, and two shafts locate on two surfaces respectively. Every clamping shaft includes a pivoting part and a clamping part. Two pivoting parts pivot two shaft holes respectively.

Description

Clamping mechanism with flip function and method for flipping and translating workpiece

This proposal relates to a mechanical clamp, in particular a clamping mechanism with a flip function.

At present, double-sided processing, such as surface bonding processing or circuit layout, is often required in many processing processes. The process of double-sided machining involves first-face machining on the surface of a workpiece. Next, the workpiece is flipped with a mechanical jaw to facilitate the second side machining. The mechanical jaw generally used to invert the workpiece comprises two clamping members, two rotating members, a displacement driving assembly and a rotary driving assembly. The two rotating members are rotatably disposed on the two clamping members. The displacement drive assembly can drive the relative displacement of the two clamping members to cause the two rotating members to clamp the workpiece. The rotary drive assembly can drive the two rotating members to rotate relative to the two clamping members to invert the workpiece.

The rotary drive assembly, while allowing the mechanical jaws to have the function of flipping the workpiece, also increases the number of drive assemblies in the mechanical jaws. However, an increase in the number of drive components adds additional equipment cost to the mechanical jaws and design complexity of the control loop. Therefore, how to reduce the equipment cost of the mechanical jaws and reduce the complexity of the mechanical jaw feedback design. It will be one of the problems that R&D personnel should solve.

The proposal is to provide a clamping mechanism with a flipping function and a method for turning the workpiece and translating the workpiece, thereby reducing the equipment cost of the mechanical jaw and simplifying the control loop design of the mechanical jaw.

The clamping mechanism with the flip function disclosed in the present proposal comprises a body, two movable claws and two unpowered clamping shafts. The two movable claws are movably disposed on the seat body. Each movable claw has a wall surface and a shaft hole. The two walls face each other, and the two axial holes are respectively located on the two walls. Each of the unpowered clamping shafts includes a connected pivoting portion and a clamping portion. The two pivoting portions are respectively pivoted on the two axial holes, so that the two unpowered clamping shafts are respectively rotatable relative to the two movable claws.

The method for flipping a workpiece of a clamping mechanism with a flip function disclosed in the present proposal. The clamping mechanism with the flip function includes two movable claws and two axial rods. The two shafts are respectively pivoted to the two movable claws. The step of flipping the workpiece with the flipping function comprises driving the two movable jaws relative to each other so that the two shafts are clamped on opposite sides of one of the workpieces on a table. The workpiece has a first side and a second side opposite to each other. The first side is attached to the workbench. The line connecting the two clamping points of the workpiece is kept at a distance from the center of gravity of the workpiece. Next, the clamping mechanism with the flip function is moved away from the table. The two shafts are pulled by the gravity of the workpiece and are rotated relative to the movable claws. The two-axis rod drives the workpiece to rotate at an angle with respect to the table. Next, the clamping mechanism with the flip function is moved along the first face toward the second face to rotate the workpiece by an angle such that the second side of the workpiece faces the table.

The method for translating a workpiece with a flipping function of the flipping function disclosed in the present proposal. The clamping mechanism with the flip function includes two movable claws. Each movable claw has a clamping groove. The step of translating the workpiece by the clamping mechanism with the flipping function comprises driving the relative movement of the two movable claws to make The two clamping slots are clamped on opposite sides of one of the workpieces on a table. The workpiece has a first side and a second side opposite to each other. The first side is attached to the workbench. Next, the clamping mechanism with the flip function is moved away from the table. Keep the first side of the workpiece away from the table. Next, the clamping mechanism with the flipping function is moved in a translational direction to translate the workpiece by a distance.

According to the above-mentioned proposal, the clamping mechanism with the flipping function and the method for turning and translating the workpiece, based on the center of gravity of the workpiece when the clamping point of the two unpowered clamping shaft is deviated from the workpiece, the gravity of the workpiece naturally generates two powerless The reason for clamping the moment of rotation of the shaft is that we do not need to install a drive element for driving the unpowered clamping shaft on the clamping mechanism. Since the demand for the driving components of the clamping mechanism of the present invention is reduced, the equipment cost of the clamping mechanism can be reduced and the complexity of the feedback design of the clamping mechanism can be reduced to improve the market competitiveness.

Furthermore, the clamping groove of the clamping mechanism can be utilized to translate the workpiece.

The above description of the contents of this proposal and the description of the following embodiments are used to demonstrate and explain the principles of this proposal, and to provide a further explanation of the scope of the patent application of this proposal.

10‧‧‧Clamping mechanism

20, 20’ ‧ ‧ workbench

22, 22’‧‧‧ recess

24, 24'‧‧‧ bearing surface

26, 26' ‧ ‧ grooves

30, 30’‧‧‧ workpieces

32, 32’‧‧‧ first side

34, 34’‧‧‧ second side

100‧‧‧ body

110‧‧‧rails

120‧‧‧ Slider

200‧‧‧ activity claws

210‧‧‧ wall

220‧‧‧Axis hole

230‧‧‧Clamping slot

300‧‧‧Unpowered clamping shaft

310‧‧‧ pivotal department

320‧‧‧Clamping Department

321‧‧‧ clamping surface

400‧‧‧ bearing

500‧‧‧ cushioning parts

1 is a perspective view of a clamping mechanism with a flip function according to an embodiment of the present proposal.

Fig. 2 is an exploded perspective view of Fig. 1.

Fig. 3 is a plan view showing the holding mechanism of the flipping function of Fig. 1 for holding a workpiece.

Fig. 4 to Fig. 6 are diagrams showing the operation of the clamping mechanism of the first embodiment to invert the workpiece.

Fig. 7 to Fig. 10 are diagrams showing the operation of the clamping mechanism of the first embodiment to invert the workpiece.

Fig. 11 and Fig. 12 are diagrams showing the operation of the clamping mechanism of the clamping mechanism of Fig. 1.

Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a perspective view of a clamping mechanism with a flip function according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of FIG. 1 . Fig. 3 is a plan view showing the holding mechanism of the flipping function of Fig. 1 for holding a workpiece.

The clamping mechanism 10 of the present embodiment has a flipping function 10 for translating or flipping a workpiece 30. The clamping mechanism 10 includes a body 100, two movable claws 200, two unpowered clamping shafts 300, and two bearings 400.

The base 100 includes a slide rail 110 and two sliders 120. The two sliders 120 are slidably disposed on the slide rails 110, respectively. The driving method between the slider 120 and the slide rail 110 is, for example, pneumatic driving, hydraulic driving or electric driving.

The two movable claws 200 are respectively disposed on the two sliders 120 to slide the two movable claws 200 relative to the slide rails 110. Each movable claw 200 has a wall surface 210, a shaft hole 220 and a clamping groove 230. The two wall surfaces 210 face each other, and the two-axis holes 220 and the two clamping grooves 230 are respectively located on the two wall surfaces 210.

The two bearings 400 are respectively disposed in the two shaft holes 220.

The two unpowered clamping shaft 300 includes a connected pivoting portion 310 and a clamping portion 320. The two pivoting portions 310 are respectively pivoted to the two bearings 400 to rotate the two shafts 310 relative to the two movable claws 200, respectively. The two clamping portions 320 each have a clamping surface 321 , and the two clamping surfaces 321 face each other, and the two clamping portions 320 respectively protrude from the two wall surfaces 210 to enable the two clamping surfaces 321 to directly contact the workpiece 30 .

It is worth noting that the source of power for rotating the unpowered clamping shaft 300 of the present proposal is not an electromechanical drive element (such as a pneumatic cylinder, a hydraulic cylinder or an electric motor). In detail, the clamping mechanism 10 does not additionally provide a rotary driving element to drive the unpowered clamping shaft 300 to rotate, but is subjected to The workpiece 30 is rotated by the influence of the moment generated by the gravity W (detailed operation mode, which will be described later). Since the demand for the driving elements of the clamping mechanism 10 of the present invention is reduced, the equipment cost of the clamping mechanism 10 can be reduced and the complexity of the feedback design of the clamping mechanism 10 can be reduced.

However, the unpowered clamping shaft 300 of the present embodiment is pivotally mounted to the shaft hole 220 through the bearing 400 to reduce the frictional resistance between the unpowered clamping shaft 300 and the movable jaw 200. However, it is not limited thereto. In other embodiments, the lubricating force between the unpowered clamping shaft 300 and the movable claw 200 can also be transmitted through the lubricating oil to reduce the frictional resistance between the two.

In this embodiment and other embodiments, the clamping mechanism 10 further includes two buffer members 500. The two cushioning members 500 are respectively disposed on the two clamping faces 321 to reduce the chance of the workpiece 30 being damaged. The cushioning member 500 of this embodiment is, for example, rubber.

The method of flipping the workpiece by the chucking mechanism 10 with the flip function will be described below. Please continue to refer to Figures 3 to 6. Fig. 4 to Fig. 6 are diagrams showing the operation of the clamping mechanism of the first embodiment to invert the workpiece.

First, as shown in Fig. 3, a workpiece 30 is placed on a table 20. The workpiece 30 has a first face 32 and a second face 34. The first face 32 faces the table 20. By moving the two sliders 110 relative to the slide rails 120, the two unpowered clamping shafts 300 are clamped to the opposite sides of the workpiece 30, and the two kinetic clamping shafts 300 are in contact with the workpiece 30. The line maintains a distance D from the center of gravity G of the workpiece 30.

Next, as shown in FIG. 4, the chucking mechanism 10 having the flipping function is moved away from the table 20 (in the direction indicated by the arrow a) so that the workpiece 30 is held by the two powerless clamping shafts 300. One end moves in a direction away from the table 20 (in the direction indicated by the arrow a), and the other end is naturally placed on the table 20 by the gravity of the workpiece 30. and also That is, the two unpowered clamping shaft 300 is rotated by the moment generated by the gravity W of the workpiece 30 and rotated relative to the movable jaw 200 (in the direction indicated by the arrow b), so that the first surface 32 of the workpiece 30 and the table 20 maintains an angle θ. When the angle is 90 degrees, since the two unpowered clamping shafts 300 are on the same vertical plane as the center of gravity G of the workpiece 30, the unpowered clamping shaft 300 is no longer rotated by the gravity W of the workpiece 30.

Next, as shown in FIG. 5, the clamping mechanism 10 having the flipping function is moved along the first face 32 toward the second face 34 (in the direction indicated by the arrow c), so that the workpiece 30 is held by the two powerless One end of the shaft 300 is moved toward the table 20 (in the direction indicated by the arrow c), and the other end is abutted against the table 20 (reaction force F) to drive the two unpowered clamping shaft 300. Rotation (in the direction indicated by arrow b) causes the second face 32 of the workpiece 30 to face the table 20.

Next, as shown in FIG. 6, the clamping mechanism 10 having the flipping function is moved toward the table 20 (in the direction indicated by the arrow d), and the second surface 34 is attached to the table 20 to complete. Flip the movement of the workpiece 30.

The thickness of the workpiece 30 described above is greater than the distance from the unpowered clamping shaft 300 to the end of the movable jaw 200, so that the clamping mechanism 10 can directly grip the workpiece 30. However, it is not limited thereto, and the clamping mechanism 10 can also hold the workpiece 30' having a thickness smaller than the distance from the unpowered clamping shaft 300 to the end of the movable claw 200. Please refer to Figures 7 through 10. Fig. 7 to Fig. 10 are diagrams showing the operation of the clamping mechanism of the first embodiment to invert the workpiece.

As shown in Fig. 7, when the workpiece 30' having a thickness smaller than the distance from the unpowered holding shaft 300 to the end of the movable claw 200 is held, a table 20' is prepared first. This table 20' has a recess 22'. The recess 22' has a bearing surface 24' and a plurality of grooves on the bearing surface 24' 26’. The workpiece 30' is placed on the bearing surface 24' of the recess 22'. The workpiece 30' is placed on the bearing surface 24' of the table 20'. Next, the clamping mechanism 10 is moved to the position of one of the grooves 26'. Then, the two sliders 110 are moved relative to the slide rail 120 to drive the two non-power clamping shafts 300 to clamp the opposite sides of the workpiece 30', and the two non-power clamping shafts 300 are in contact with the workpiece 30'. The line of the holding point is kept at a distance D from the center of gravity G of the workpiece 30'.

Next, as shown in Fig. 8, the chucking mechanism 10 having the flip function is moved in a direction away from the table 20' (in the direction indicated by the arrow f) and moved from one side of the recess 22' to the recess 22'. On the other side, one end of the workpiece 30' held by the two powerless clamping shafts 300 will move away from the table 20' (in the direction indicated by the arrow f), while the other end will be subjected to the gravity of the workpiece 30'. The effect is naturally placed on the bearing surface 24' of the recess 22'. That is, the two unpowered clamping shaft 300 is rotated relative to the movable jaw 200 (in the direction indicated by the arrow b) by the moment generated by the workpiece 30' gravity W, and the first surface 32 of the workpiece 30' is 'An angle θ is maintained with the table 20'. When the included angle is 90 degrees, since the two unpowered clamping shafts 300 are on the same vertical plane as the center of gravity G of the workpiece 30', the unpowered clamping shaft 300 is no longer rotated by the gravity W of the workpiece 30'.

Next, as shown in Fig. 9, the flipping mechanism 10 having the flipping function is translated (in the direction indicated by the arrow g) back to the opposite side of the recess 22' to drive the workpiece 30' to translate.

Next, as shown in FIG. 10, the clamping mechanism 10 having the flipping function is moved toward the table 20' (in the direction indicated by the arrow g), so that the second surface 34' is attached to the table 20'. To complete the flipping of the workpiece 30'.

The method of translating the workpiece 30' by the gripping mechanism 10 having the flip function will be further described below. Please continue to refer to Figs. 11 to 12. Figure 11 and Figure 12 are the clamping machine of Figure 1. Schematic diagram of the action of the translational workpiece.

As shown in Fig. 11, the workpiece 30' is located in one of the recesses 22'. Next, the clamping mechanism 10 is moved to the position of one of the grooves 26'. The two sliding blocks 120 are moved relative to the sliding rail 120 to drive the two clamping slots 230 to clamp opposite sides of the workpiece 30'.

Next, as shown in Fig. 12, the gripping mechanism 10 is moved away from the table 20' so that the first face 32' of the workpiece 30' is relatively far from the table. Next, it is moved in a translational direction (in the direction indicated by the arrow h) and in a direction toward the table 20' to translate the workpiece 30' to the other recess 22'. Next, the chucking mechanism 10 having the flip function is moved in the direction of approaching the table 20', so that the first surface 32' of the workpiece 30' is attached to the table 20'.

According to the above-mentioned proposal, the clamping mechanism with the flipping function and the method for turning and translating the workpiece, based on the center of gravity of the workpiece when the clamping point of the two unpowered clamping shaft is deviated from the workpiece, the gravity of the workpiece naturally generates two powerless The reason for clamping the moment of rotation of the shaft is that we do not need to install a drive element for driving the unpowered clamping shaft on the clamping mechanism. Since the demand for the driving components of the clamping mechanism of the present invention is reduced, the equipment cost of the clamping mechanism can be reduced and the complexity of the feedback design of the clamping mechanism can be reduced to improve the market competitiveness.

Furthermore, the clamping groove of the clamping mechanism can be utilized to translate the workpiece.

Although the embodiments of the present disclosure are as described above, and are not intended to limit the present proposal, any person skilled in the art, regardless of the spirit and scope of the proposal, may have the shapes, structures, and features described in the scope of the application of the present proposal. And the quantity can be changed slightly, so the scope of patent protection of this proposal shall be subject to the definition of the scope of patent application attached to this specification.

10‧‧‧Clamping mechanism

100‧‧‧ body

110‧‧‧rails

120‧‧‧ Slider

200‧‧‧ activity claws

210‧‧‧ wall

220‧‧‧Axis hole

230‧‧‧Clamping slot

300‧‧‧Unpowered clamping shaft

310‧‧‧ pivotal department

320‧‧‧Clamping Department

321‧‧‧ clamping surface

400‧‧‧ bearing

500‧‧‧ cushioning parts

Claims (10)

A clamping mechanism with a flipping function, comprising: a body; two movable claws movably disposed on the seat body, each movable claw having a wall surface and a shaft hole, the two wall faces facing each other, and the two The shaft holes are respectively located on the two wall surfaces; and the two unpowered clamping shafts, each of the unpowered clamping shafts includes a connected pivoting portion and a clamping portion, and the two pivoting portions are respectively pivoted on the two axial holes So that the two unpowered clamping shafts are respectively rotatable relative to the two movable claws. The clamping mechanism of claim 1, wherein the two clamping portions respectively protrude from the two wall surfaces. The clamping mechanism of claim 1, wherein the base body comprises a slide rail and two sliders, wherein the two sliders are respectively slidably disposed on the slide rail, and the two movable claws are respectively disposed on the two sliders. The clamping mechanism of claim 1, further comprising two bearings, wherein the two bearings are respectively disposed on the shaft hole, and the two pivoting portions of the two unpowered clamping shafts are respectively disposed on the two bearings, so that The two shafts are pivotable relative to the movable jaw. The clamping mechanism of claim 1, further comprising two buffering members, each of the two clamping portions further having a clamping surface, the two clamping surfaces facing each other, and the two buffering members are respectively disposed on the two clamping members Hold the face. The clamping mechanism of claim 1, wherein the two movable claws further comprise a clamping groove, and the two clamping grooves are located on the two wall surfaces. The method for flipping a workpiece with a flipping function, the clamping mechanism with a flipping function comprises two movable claws and two unpowered clamping shafts, wherein the two unpowered clamping shafts are respectively pivoted on the two movable claws. The step of flipping the workpiece with the flipping function comprises: driving the two movable claws relative to move, so that the two unpowered clamping shafts are clamped to a workbench On the opposite sides of the upper workpiece, the workpiece has a first surface and a second surface opposite to each other, the first surface is attached to the working table, and the two unpowered clamping shafts are in contact with the workpiece. The line of points is kept at a distance from the center of gravity of the workpiece; the clamping mechanism with the flip function is moved away from the table, and the two unpowered clamping shafts are pulled by the gravity of the workpiece to rotate relative to the movable claw Causing an angle between the workpiece and the table; and moving the clamping mechanism having a flip function along the first surface toward the second surface to rotate the workpiece to cause the second workpiece Facing the workbench. The method of reversing a workpiece of a reversing clamping mechanism according to claim 7, wherein the clamping mechanism having a flip function is moved along the first surface toward the second surface to make the workpiece After the step of the second surface facing the workbench, the method further comprises the step of moving the clamping mechanism with the flipping function toward the working table so that the second surface contacts the working table. A method for translating a workpiece with a flipping function, the clamping mechanism with a flipping function comprises two movable claws, each of the movable claws having a clamping groove, and the clamping function of the flipping function of the workpiece The step includes: driving the two movable claws to move relative to each other, so that the two clamping grooves are clamped on opposite sides of a workpiece on a worktable, the workpiece having a first surface and a second surface opposite to each other Laminating one side of the work table; moving the clamping mechanism with the flip function away from the work table, so that the first surface of the workpiece is relatively far from the work table; and the clamping with the flipping function The mechanism moves in a translational direction to translate the workpiece distance. The method for translating a workpiece by the clamping mechanism with a flipping function according to claim 9, wherein the step of moving the clamping mechanism with the flipping function in a translational direction to shift the workpiece by a distance further comprises the steps : moving the clamping mechanism with the turning function toward the working table, so that the first surface is attached to the working table.