TWI551390B - Enhanced clamping force of the pressure jaws - Google Patents

Description

Pneumatic claw that enhances the clamping force

The invention relates to a pneumatic claw (or oil pressure claw) for enhancing the clamping force, in particular, an array sub-cylinder is added to the outer circumference of the main body, and cooperates with the relative movement of the main cylinder, in addition to the driving force of the main cylinder to the clamping finger, and then the auxiliary cylinder Increase the pushing force of the pinch finger, improve the topping ability or clamping ability of the pinch finger. A pneumatic claw (or oil pressure claw) that enhances the clamping force.

As is well known, the traditional mechanical claws provide grasping work items for various precise processing, and are widely used in the processing of metal objects or the precise placement of work objects, mechanical jaws for clamping and metal processing of structural devices, such as As shown in the first and second figures, the structural device of the basic mechanical claw is a chuck 10, a plunger 11 and three fingers 12, and the chuck 10 is a cylinder chamber 101 inside the bottom, and the cylinder chamber 101 is provided. There are an inlet and outlet hole 102 and an outlet air hole 103, and the plunger 11 is disposed in the slot 13 in the center of the chuck 10, so that the plunger 11 can be displaced up and down in the slot 13 and the radial position of the chuck 10 is additionally provided with three The sliding groove 14 is positioned on a piston 15 to drive the plunger 11 to synchronize the upper and lower displacements. The head of the plunger 11 is distributed in an umbrella shape, which is a combination of three T-shaped bodies 16 and each T-shaped body. 16 obliquely extending downwardly is provided with an oblique body 161. The surface of the oblique body 161 has a sloped and smooth inclined surface. The finger 12 is mainly disposed in the sliding slot 14 of the chuck 10, and the front end of the finger 12 is obliquely disposed with a T-shaped shape. The groove 121, the T-shaped groove 121 just allows the T-shaped body 16 and the oblique body 161 of the plunger 11 to pass through the T-shaped groove 121 from the bottom end of the finger 12 and can be upward Moving the gripping fingers 12 on a surface for gripping finger positioning block 122, and the clip 122 is provided with hobbing surfaces of a block that can be used for fine adjustment and positioning of the workpiece.

In the operation of the above-mentioned conventional mechanical claw, when the piston 15 is moved up, the plunger 11 is driven to rise, and the italic body 161 of the plunger 11 is also raised, forcing the finger 12 to laterally slide outward, and the column When the plug 11 is controlled to move downward by the cylinder chamber 101, the finger 12 is slid inward, and the oblique body 161 of the plunger 11 and the T-shaped groove 121 of the finger 12 cooperate with each other to move the horizontal finger 12 The action is based on the trigonometric function theory, which can be easily and easily pushed. This is the traditional mechanical claw operation.

However, most of the currently developed mechanical claws are exposed. As shown in the third and fourth figures, there are several lines 21 on the outer circumference of the cylinder of the mechanical claw 20, which are exposed and affect the operation path.

Furthermore, the industry cooperates with the weight of the work object to increase the clamping force of the mechanical claws, and develops two methods one after another, one is to increase the spring, the other is to increase the piston, and the spring is added in two modes, one is in the top material mechanism. Add springs (as shown in Figure 5), and add springs in the cylinders (as shown in Figures 6 and 7); add springs in the top mechanism, as shown in Figure 5, mainly The cylinder 30 has a piston, a plunger, an inlet and outlet air hole, a discharge air hole and a top rod 31, etc., and the top rod 31 is pushed up or down by using the method as shown in the first figure, and a spring is sleeved on the top rod 31. 32, the top thrust or clamping force is increased by the spring 32, but when the ejector rod 31 is lowered, the piston also increases the downward force to compress the spring 32, which is a device for adding the spring 32 in the ejector mechanism. There are springs 32 that are tired and have an abnormal sound.

The mechanical claws shown in Figures 6 and 7 are provided with a spring 44 in the cylinder 40. The cylinder 40 has a piston 41, a plunger 42, a plunger ring 43 and three fingers 45, and a head of the plunger 42. In the form of an umbrella type, the three T-shaped bodies 421, the plunger 42 rises and falls to shift the three fingers 45, and the piston 41 is provided with a spring 44. When the piston 41 is lowered, the clamping force of the finger 45 is removed except for the cylinder. In addition to the thrust of 40, the spring force of the spring 44 is increased. This is the structure in which the spring 44 is added to the cylinder 40, and the spring 44 is fatigued and abnormal noise is generated.

The mechanical claws shown in Figures 8 and 9 are in the dual-cylinder 50 mode with two inside. a piston 51, 52, a plunger 53, a plunger ring 54 and three fingers 56, the head of the plunger 53 is distributed in an umbrella shape, is three T-shaped bodies 531, the plunger 53 rises and falls to shift three clips Finger 56, using the double descent force of the two pistons 51, 52 to increase the clamping force or top thrust of the three fingers 56, which is a dual-cylinder 50 mode, which is caused by the increase of the upper and lower volume due to the addition of the second cylinder. Not for every machine.

Whether it is to add a spring in the top material mechanism, or to add a spring in the cylinder, or a two-cylinder mode, it is actuated on the same set of plungers to increase the plunger actuating ability on the central shaft to push the ejector device. Or the pinch, especially the pinch, is subjected to the pushing force, which is changed from the axial force of the plunger to the lateral force, and a part of the force is converted to the frictional force, and the axial force is converted to the lateral force, so either Adding a spring in the top material mechanism, or adding a spring in the cylinder, or a two-cylinder mode, does not double the force.

Therefore, it is necessary to develop a lateral force to directly push the ejector device or the finger to reduce the loss force and increase the clamping or topping ability of the mechanical claw.

In view of this, the inventor of the present invention is still actively working on development, research and improvement, and constantly experimenting with assembly and accumulating experience, and finally has an invention capable of solving the above drawbacks.

The invention is a pneumatic claw for enhancing the clamping force, which is a main body, and the main body includes:

a master cylinder having a piston, a plunger, a first air hole, a second air hole and a tapered cone head, the piston pushing the plunger, the top of the plunger is coupled with a tapered cone head, and the inclined cone head can push a finger. The first air hole and the second air hole are used to introduce air pressure into the main cylinder, so that the plunger is axially displaced, and the inclined surface of the pin finger is matched with the inclined cone head to make a radial displacement pin; the feature is: the outer circumference of the main body is set There is an array auxiliary cylinder, the auxiliary cylinder has a secondary piston, a secondary plunger and a third air hole, and the secondary plunger is arranged radially with respect to the master cylinder. The secondary piston pushes the secondary plunger, the secondary plunger head abuts the top finger, and the third air hole is connected to the auxiliary cylinder by the master cylinder, so that the secondary plunger is radially displaced to push the clamp finger; accordingly, the array auxiliary cylinder is added and matched The relative movement of the master cylinder pushes the clamp finger to increase the topping capacity or clamping capability of the clip finger.

The utility model relates to a pneumatic claw for enhancing the clamping force, and the main purpose thereof is to provide an array sub-cylinder in the outer periphery of the main body, and cooperate with the relative movement of the main cylinder, in addition to the driving force of the main cylinder against the clamping finger, and then the auxiliary cylinder is used to increase the clamping of the clamping finger. Strength, improve the topping ability or clamping ability of the finger.

The present invention provides a pneumatic claw that enhances the clamping force, and another object is to reduce the volume between the upper and lower portions of the pneumatic pawl.

The present invention provides a pneumatic claw for enhancing the clamping force, and another object thereof is to provide a friction reducing loss, and to avoid the conventional increase in the clamping force by the spring, and the occurrence of elastic fatigue and abnormal sound.

[study]

10‧‧‧ chuck

11‧‧‧Plunger

12‧‧‧ pinch

101‧‧‧Cylinder room

102‧‧‧Inlet and outlet

103‧‧‧Exhaust vents

13‧‧‧Slots

14‧‧‧Chute

15‧‧‧Piston

16‧‧‧T-body

161‧‧‧ Italic

121‧‧‧T-slot

122‧‧‧ pinch block

20‧‧‧ mechanical claws

21‧‧‧ pipeline

30‧‧‧ cylinder

31‧‧‧Top rod

32‧‧‧ Spring

40‧‧‧ cylinder

44‧‧‧ Spring

41‧‧‧Piston

42‧‧‧Plunger

43‧‧‧Plunger ring

45‧‧‧ pinch

421‧‧‧T body

44‧‧‧ Spring

50‧‧‧Double cylinder

51‧‧‧Piston

52‧‧‧Piston

53‧‧‧Plunger

54‧‧‧Plunger ring

56‧‧‧ pinch

531‧‧‧T body

56‧‧‧ pinch

〔this invention〕

60‧‧‧ Subject

61‧‧‧Master cylinder

70‧‧‧Auxiliary cylinder

62‧‧‧Piston

63‧‧‧Plunger

611‧‧‧First air hole

612‧‧‧second vent

64‧‧‧Bevel head

65‧‧‧Main bottom cover

66‧‧‧ pinch

661‧‧‧Slope

71‧‧‧Secondary piston

72‧‧‧Sub plunger

73‧‧‧ third air hole

74‧‧‧Subback cover

80‧‧‧ Subject

90‧‧‧Auxiliary cylinder

96‧‧‧ pinch

100‧‧‧ Subject

110‧‧‧Auxiliary cylinder

106‧‧‧ pinch

The first figure is a schematic cross-sectional view of a conventional mechanical jaw clamping state.

The second figure is a schematic cross-sectional view of a conventional mechanical claw release state.

The third figure is a schematic perspective view of a conventional mechanical claw line exposed.

The fourth figure is a schematic plan view of the conventional mechanical claw line exposed.

The fifth figure is a schematic view showing the plane of the mechanical claw in the top material mechanism.

The sixth figure is a top plan view of a conventional mechanical claw in which a spring is added to the cylinder.

The seventh figure is a schematic cross-sectional view of a conventional mechanical claw in a cylinder.

The eighth figure is a schematic plan view of a top view of a two-cylinder.

The ninth figure is a schematic cross-sectional view of a conventional mechanical claw.

Figure 11 is a perspective view of a first embodiment of the present invention.

Figure 11 is a perspective view showing another perspective of the first embodiment of the present invention.

Figure 12 is a top plan view showing the first embodiment of the present invention.

Figure 13 is a schematic cross-sectional view showing the clamped state of the jaw of the first embodiment of the present invention.

Fig. 14 is a schematic cross-sectional view showing the state in which the jaws of the first embodiment of the present invention are relaxed.

The fifteenth diagram is a plan view of a second embodiment of the present invention.

Figure 16 is a plan view showing a third embodiment of the present invention.

The present invention is a pneumatic claw for enhancing the clamping force. The first embodiment, as shown in the tenth, eleventh, twelfth and thirteenth drawings, is a main body 60. The main body 60 includes a master cylinder 61 and a periphery of the master cylinder 61. There are a plurality of sets of auxiliary cylinders 70. The main cylinder 61 has a piston 62, a plunger 63, a first air hole 611, a second air hole 612 and a tapered cone head 64. The bottom of the main cylinder 61 has a main bottom cover 65 for closing. The master cylinder 61, the piston 62 moves axially up and down in the master cylinder 61, the piston 62 is combined with the plunger 63, the piston 62 pushes the plunger 63 to move up and down axially, and the plunger 63 is coupled with a tapered cone head 64 and a tapered cone head. The portion 64 can push a pin finger 66, the bevel head portion 64 is a three-way oblique taper surface, and the pin finger 66 has three distributions, and the sub-cylinder 70 is provided with three groups, and the direction in which the pin fingers 66 are distributed is distributed with the sub-cylinder 70. The first air hole 611 and the second air hole 612 are introduced into the main cylinder 61. The first air hole 611 is located above the master cylinder 61, and the air pressure is above the master cylinder 61. The second air hole 612 is located below the master cylinder 61. The air pressure is introduced below the main cylinder 61, or the air pressure is discharged to the second air hole 612, so that the plunger 63 is axially displaced, and the finger 66 has a slope 661 and a tapered cone. 64 ride Fitted as a radial displacement finger 66.

The improvement of the present invention lies in the sub-cylinder 70, which is provided on the outer circumference of the main body 60. The sub-cylinders 70 of each group have a pair of pistons 71, a pair of plungers 72 and a third air hole 73 in each of the sub-cylinders 70. The sub-cylinder 70 has a sub-bottom cover 74 on the side of the sub-cylinder 70, and the sub-base cover 74 serves as a closed sub-cylinder 70. With respect to the master cylinder 61, the secondary plunger 72 is disposed radially, the secondary piston 71 is displaced radially to the left and right, the secondary piston 71 is coupled to the secondary plunger 72, and the secondary piston 71 urges the secondary plunger 72 to move radially to the left and right, and the secondary plunger 72 The head abuts the pin 66, and the third air hole 73 is communicated by the master cylinder 61 to the sub-cylinder 70. The first air hole 611 of the master cylinder 61 is pressurized above the master cylinder 61, and the air pressure above the master cylinder 61 is communicated to The third air hole 73 is introduced into the side of the sub-cylinder 70 by the third air hole 73, and the sub-plunger 72 is radially displaced to push the finger 66.

With the above structural device, the present invention has an air pressure for enhancing the clamping force The claw, as shown in Fig. 13, is operated by the first air hole 611 of the master cylinder 61 to input air pressure above the master cylinder 61 (the second air hole 612 exhaust gas), and the air pressure above the master cylinder 61 is connected to the third air hole. 73, the air pressure is introduced from the third air hole 73 to the right of the sub-cylinder 70, the piston 62 of the main cylinder 61 pushes the plunger 63 to move downward, and the sub-piston 71 of the sub-cylinder 70 pushes the sub-plunger 72 to move to the left. The taper head 64 above the plunger 63 of the master cylinder 61 is retracted downward, and the finger 66 is pushed upward, and the pin finger is simultaneously pushed by the sub-plunger 72 of the sub-cylinder 70, and the pin finger 66 is actuated. Action, or pinch 66 for ascending and pushing.

As shown in the fourteenth figure, the movement of the finger 66 is completed, and the first cylinder 61 The two air holes 612 enter the air pressure below the master cylinder 61 (the first air hole 611 exhausts the air), while the air pressure above the master cylinder 61 communicates with the third air hole 73, and the air pressure is introduced from the third air hole 73 to the left side of the auxiliary cylinder 70, the master cylinder The piston 62 of the 61 pushes the plunger 63 upwardly, while the secondary piston 71 of the secondary cylinder 70 urges the secondary plunger 72 to move radially to the right. The master cylinder 61 The plunger 63 is upwardly above the inclined cone head 64, and the opposite finger 66 is pushed downward, the finger 66 is actuated to release the action, or the finger 66 is lowered for no pushing, etc., and the present invention uses a pneumatic system. Or hydraulic system.

According to the second embodiment of the present invention, as shown in the fifteenth embodiment, the main body 80 is identical to the first embodiment, and the sub-cylinder 90 is provided with two sets of oppositely distributed on the outer sides of the main body 80, and the clip 96 has two. The distribution is applied to the implementation of the two fingers 96.

According to the third embodiment of the present invention, as shown in the sixteenth embodiment, the main body 100 is identical to the first embodiment, and the sub-cylinders 110 are provided with four groups, which are evenly distributed on the outer four sides of the main body 100, and the pin fingers 106 have four distributions. It is applied to the implementation of the four fingers 106.

In the present invention, a sub-cylinder 70 (90, 110) is added to the side of the finger 66 (96, 106). In addition to the main cylinder 61 of the main body 60 itself, the sub-cylinder 70 directly pushes the finger 66 to reduce friction loss and avoid Traditionally, the spring has increased the clamping force, and the elastic fatigue and the abnormal sound are generated, and the conventional increase of the number of cylinders in the same axial direction is avoided, which causes the increase of the upper and lower volume.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, that is, the equivalent variations and modifications made by the scope of the present invention are covered by the scope of the present invention.

In summary, the present invention is a pneumatic claw that enhances the clamping force, and its novelty, practicability and advancement are unquestionable, and fully meet the requirements of the patent, and are drawn according to law.

60‧‧‧ Subject

61‧‧‧Master cylinder

70‧‧‧Auxiliary cylinder

62‧‧‧Piston

63‧‧‧Plunger

611‧‧‧First air hole

612‧‧‧second vent

64‧‧‧Bevel head

65‧‧‧Main bottom cover

66‧‧‧ pinch

661‧‧‧Slope

71‧‧‧Secondary piston

72‧‧‧Sub plunger

73‧‧‧ third air hole

74‧‧‧Subback cover

Claims (6)

A pneumatic claw for enhancing the clamping force, which is a main body, the main body includes: a master cylinder having a piston, a plunger, a first air hole, a second air hole and a tapered cone head, the piston pushing the plunger, the plunger The upper part is combined with a tapered cone head, and the inclined cone head can push a finger, the first air hole and the second air hole are used to introduce air pressure into the master cylinder, so that the plunger is axially displaced, and the finger has a slope and a tapered cone. The part is matched with a radial displacement finger; an array sub-cylinder is arranged on the outer circumference of the main body, and the sub-cylinder has a sub-piston, a sub-plunger and a third air hole, and the sub-piston is radially arranged with respect to the main cylinder, and the sub-piston Pushing the secondary plunger, the secondary plunger head abuts the top finger, the third air hole is connected to the auxiliary cylinder by the master cylinder, and the secondary plunger is radially displaced to push the finger; the first air hole of the master cylinder is The air pressure is above the master cylinder, and the air pressure above the master cylinder is connected to the third air hole, and the air pressure is introduced into the side of the auxiliary cylinder from the third air hole, and the second air hole of the master cylinder is introduced into the air pressure below the master cylinder or discharged. The air pressure is in the second air hole; accordingly, the array auxiliary cylinder is added, and the opposite action of the master cylinder is used, Moving, a top clamp fingers increased ability or holding ability of the material. According to the pneumatic claw of the reinforcing clamping force according to Item 1 of the patent application, wherein the inclined cone head is a three-way inclined taper, and the clip has three distributions, and the auxiliary cylinder has three sets. A pneumatic claw for enhancing the clamping force according to the first aspect of the patent application, wherein the bottom of the master cylinder has a main bottom cover. According to the pneumatic claw of the reinforcing clamping force according to Item 1 of the patent application, the side of the auxiliary cylinder has a bottom cover. According to the pneumatic claw of the reinforcing clamping force according to Item 1 of the patent application, wherein the auxiliary cylinder is provided with two sets of oppositely distributed outside the main body, and the clip has two distributions. According to the pneumatic claw of the reinforcing clamping force according to Item 1 of the patent application, wherein the auxiliary cylinder is provided with four groups, which are evenly distributed outside the main body, and the clip has four distributions.