A pneumatic finger cylinder

Abstract

In order to solve the problem that the pneumatic finger cylinder in the prior art is inconvenient to disassemble, the present invention provides a pneumatic finger cylinder, the upper part of the pneumatic finger cylinder is detachably mounted with an upper cover, and the pneumatic finger relies only on the upper cover to prevent the pneumatic finger from slipping out of the pneumatic finger cylinder. If the pneumatic finger is damaged, the upper cover is disassembled, the pneumatic finger loses the limit of the upper cover, and there is no other mechanism to limit it to prevent it from detaching from the pneumatic finger cylinder, so the pneumatic finger can be directly pulled out of the pneumatic finger cylinder, and can be easily disassembled and installed, without having to disassemble the entire pneumatic finger cylinder to replace the damaged pneumatic finger. Even factory workers without professional knowledge can easily replace the damaged pneumatic finger, which largely avoids the shutdown caused by the stuck pneumatic finger.

Description

Technical Field

[0001] The invention relates to an automated clamping device, in particular to a pneumatic finger cylinder. Background Art

[0002] At present, the existing pneumatic fingers are shown in Chinese patent CN2014207042532. Figure 1 As shown and described in paragraphs 0015 and 0016 of the specification, the wedge mechanism 204 is driven up and down by a piston to drive the fingers 201 and 207 to open and close.

[0003] The defects of the prior art are: those skilled in the art can easily know from the patent document that if the pneumatic finger described in the patent is to be disassembled, the entire wedge-shaped mechanism must be disassembled, and then the pneumatic finger can be disassembled, and the pneumatic finger cannot be directly disassembled. If the pneumatic finger is damaged or stuck, it is not convenient to replace and repair it, and the production line needs to be shut down for a long time to repair the faulty pneumatic finger cylinder. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to provide a pneumatic finger cylinder from which the pneumatic fingers can be individually disassembled, so as to facilitate replacement of a faulty pneumatic finger.

[0005] A pneumatic finger cylinder, an upper cover is detachably mounted on the upper part of the pneumatic finger cylinder, and the pneumatic finger relies solely on the upper cover to prevent the pneumatic finger from slipping out of the pneumatic finger cylinder.

[0006] Furthermore, the upper cover is provided with a radial upper limit slot, and the upper limit slot is used to be connected to the upper end of the pneumatic finger in a slidable manner and cannot slip out of the upper cover.

[0007] Furthermore, a radial lower guide groove is provided on the pneumatic finger cylinder, and the lower guide groove is used to be slidably connected to the lower end of the finger.

[0008] Furthermore, it also includes a pneumatic finger, the upper end of the pneumatic finger is provided with an upper limit end for slidably embedding in the upper limit through groove, and the upper limit end is step-shaped.

[0009] Furthermore, it also includes a pneumatic finger, the lower end of the pneumatic finger is provided with a lower limit end for slidably embedding in the lower guide groove, and the lower limit end is roughly block-shaped.

[0010] Furthermore, it also includes a piston, and an upper air chamber and a lower air chamber for driving the piston to move up and down. A push block fixed to the piston is arranged above the piston. The push block is provided with an inclined groove for nesting and installing the pneumatic finger and driving the pneumatic finger to move horizontally. The inclined groove is in the shape of a circular tube.

[0011] Furthermore, spare pneumatic finger installation positions are arranged on the pneumatic finger cylinder, and the distance from each pneumatic finger installation position to the center point of the pneumatic finger cylinder is equal.

[0012] Furthermore, the push block is roughly in the shape of a petal, having six equal petals, and the inclined groove is provided at the same position on each petal.

[0013] Furthermore, an air inlet and an air outlet are provided which are connected to the upper air cavity and the lower air cavity respectively.

[0014] Furthermore, the piston is equipped with a magnetic block, and the pneumatic finger cylinder is equipped with a magnetic sensor for sensing the position of the magnetic block.

[0015] If the pneumatic finger is damaged and the upper cover is removed, the pneumatic finger loses the limit of the upper cover, and there is no other mechanism to limit it to prevent it from detaching from the pneumatic finger cylinder. Therefore, the pneumatic finger can be directly pulled out of the pneumatic finger cylinder and can be easily disassembled and installed. There is no need to disassemble the entire pneumatic finger cylinder to replace the damaged pneumatic finger. Even factory workers without professional knowledge can easily replace the damaged pneumatic finger, which largely avoids the shutdown caused by the jamming of the pneumatic finger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional schematic diagram of the pneumatic finger cylinder of the present invention;

[0017] Figure 2 It is a front view schematic diagram of the pneumatic finger cylinder of the present invention without the cover installed;

[0018] Figure 3 A schematic front view of the pneumatic finger cylinder of the present invention with the upper cover installed;

[0019] Figure 4 A schematic side view of the pneumatic finger cylinder of the present invention with the upper cover installed;

[0020] Figure 5 It is a top view schematic diagram of the pneumatic finger cylinder of the present invention without the cover installed;

[0021] Figure 6 A schematic top view of the pneumatic finger cylinder of the present invention with the upper cover installed;

[0022] Figure 7 Schematic diagram of the pneumatic finger.

[0023] In the figure: 1. lower air cavity; 2. upper air cavity; 5. pneumatic finger; 6. push block; 7. piston; 8. upper cover; 9. magnetic block; 10. magnetic sensor; 11. upper end of pneumatic finger; 12. lower end of pneumatic finger; 13. lower guide groove. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] like Figure 1-7 As shown, a pneumatic finger cylinder is provided, and an upper cover 8 is detachably mounted on the upper portion of the pneumatic finger cylinder, and the pneumatic finger 5 is prevented from slipping out of the pneumatic finger cylinder only by the upper cover 8. When the upper cover 8 is removed, the pneumatic finger 5 loses the limit of the upper cover 8, and there is no other mechanism to limit it to prevent it from escaping from the pneumatic finger cylinder, so the pneumatic finger 5 can be directly pulled out of the pneumatic finger cylinder, and can be easily disassembled and installed.

[0026] Furthermore, the upper cover 8 is provided with a radial upper limit slot, which is used to connect with the upper end of the finger slidably and not to slip out of the upper cover 8. The function of the upper limit slot is to allow the pneumatic finger 5 to slide along the upper limit slot to complete the opening and tightening action, and to limit the pneumatic finger 5 to prevent it from slipping out of the pneumatic finger cylinder.

[0027] Furthermore, a radial lower guide groove 13 is provided on the pneumatic finger cylinder, and the lower guide groove 13 is used to be slidably connected to the lower end of the finger. The function of the lower guide groove 13 is to allow the pneumatic finger 5 to slide along the upper limit slot to complete the opening and tightening action.

[0028] Furthermore, it also includes a pneumatic finger 5, the two ends of which are respectively provided with a lower limit end and an upper limit end for slidably embedding in the lower guide groove 13 and the upper limit groove, the upper limit end is in a step shape, and the lower limit end is roughly in a block shape. The upper convex part of the stepped upper limit end can be slidably embedded in the upper limit groove, and the extended part of the upper limit part abuts against the lower wall of the upper cover 8, so that the pneumatic finger 5 can slide along the upper limit groove without slipping out of the upper cover 8. The block-shaped lower limit end is embedded in the lower guide groove 13, and the pneumatic finger 5 moves radially under the action of the push block 6, the upper end 11 of the pneumatic finger slides along the upper limit groove, and the lower end 12 of the pneumatic finger slides along the lower guide groove 13, so that the pneumatic finger 5 completes the opening and tightening action. When the pneumatic finger 5 is to be disassembled, it is only necessary to disassemble the upper mounting cover. The outer extension of the upper limit portion is no longer vertically limited by the upper cover 8, so the entire pneumatic finger 5 can be directly taken out, which is very convenient for installing and replacing the pneumatic finger 5.

[0029] Furthermore, it also includes a piston 7, and an upper air chamber 2 and a lower air chamber 1 that drive the piston 7 to move up and down. A push block 6 fixed to the piston 7 is also arranged above the piston 7. The push block 6 is provided with an inclined groove for nesting and installing the pneumatic finger 5 and driving the pneumatic finger 5 to move horizontally. The inclined groove is in the shape of a circular tube. When the lower air chamber 1 is inflated, the piston 7 moves upward, driving the push block 6 fixed to it to move upward, and the push block 6 squeezes the pneumatic finger 5 through the inclined groove to make it open; when the upper air chamber 2 is inflated, the piston 7 moves downward, driving the push block 6 fixed to it to move downward, and the push block 6 squeezes the pneumatic finger 5 through the inclined groove to tighten it. Since the pneumatic finger 5 is actually driven to open and tighten is a semi-arc surface with a large contact area, compared with the wedge mechanism in the prior art that drives the pneumatic finger 5 with a plane, due to the larger force area and uniform force, it has a longer service life and can better avoid the pneumatic finger 5 from coming out and getting stuck.

[0030] Furthermore, spare pneumatic finger 5 installation positions are provided on the pneumatic finger cylinder, and the distance from each pneumatic finger 5 installation position to the center point of the pneumatic finger cylinder is equal. Since the pneumatic finger cylinder of the present invention can easily install and disassemble the pneumatic fingers 5, when parallel clamping is required, only two pneumatic fingers 5 need to be symmetrically installed to achieve parallel clamping; and when centering clamping is required, three or more pneumatic fingers 5 can be installed. Since all pneumatic fingers 5 are controlled to open and tighten by the same push block 6, all pneumatic fingers 5 can be opened and tightened synchronously. After the tightened pneumatic fingers 5 clamp the object, the position of the object will be exactly at the center of the pneumatic finger cylinder, that is, automatic centering is achieved.

[0031] Furthermore, the push block 6 is roughly in the shape of a petal, and has six petals in equal parts, and the above-mentioned inclined groove is provided at the same position on each petal. According to actual conditions, two to six pneumatic fingers 5 can be installed in the pneumatic finger cylinder, and automatic centering can be achieved when three pneumatic fingers 5 are installed.

[0032] Furthermore, the diameter of the inclined slot is matched with the diameter of the pneumatic finger 5, so that the outer wall of the pneumatic finger 5 is attached to the slot wall of the inclined slot. After the pneumatic finger 5 is installed in the inclined slot of the push-pull block, the gap between it and the pneumatic finger 5 is extremely small, so when multiple air fingers move outward or inward at the same time, the center of the circle will hardly change when reaching the maximum point and the minimum point, so the pneumatic finger 5 will have the characteristic of fixed centering position when equipped with three or more air fingers.

[0033] Furthermore, in order to achieve precise control in the automation project, the piston 7 is installed with a magnetic block 9, and the pneumatic finger cylinder is installed with a magnetic sensor 10 for sensing the position of the magnetic block 9. Preferably, the magnetic sensor 10 is installed on the mounting groove provided on the side of the pneumatic finger cylinder. Thus, the clamping and loosening of the pneumatic finger 5 can be controlled, which can achieve a high degree of automation controllability and save space, and has the characteristics of easy installation, etc.

[0034] Furthermore, an air inlet and an air outlet are provided which are connected to the upper air cavity 2 and the lower air cavity 1 respectively.

[0035] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A pneumatic finger cylinder, characterized in that: An upper cover is detachably mounted on the upper part of the pneumatic finger cylinder, and the pneumatic finger relies solely on the upper cover to prevent the pneumatic finger from slipping out of the pneumatic finger cylinder. The upper cover is provided with a radial upper limit slot, and the upper limit slot is used to be connected to the upper end of the pneumatic finger so as to be slidable and not to slip out of the upper cover. A radial lower guide groove is provided on the pneumatic finger cylinder, and the lower guide groove is used to be slidably connected to the lower end of the finger. The pneumatic finger cylinder also includes a pneumatic finger, and the upper end of the pneumatic finger is provided with an upper limit end for being slidably embedded in the upper limit slot. The upper limit end is in the shape of a step, and the upper convex part of the stepped upper limit end can be slidably embedded in the upper limit groove, while the outer extension part of the upper limit part abuts against the lower wall of the upper cover, so that the pneumatic finger can slide along the upper limit groove without slipping out of the upper cover. The lower end of the pneumatic finger is provided with a lower limit end for being slidably embedded in the lower guide groove. The lower limit end is roughly block-shaped. When the pneumatic finger is to be disassembled, it is only necessary to disassemble the upper cover. The outer extension part of the upper limit part is no longer subject to the vertical limitation of the upper cover, and the entire pneumatic finger can be directly taken out.

2. A pneumatic finger cylinder as claimed in claim 1, characterized in that: It also includes a piston, and an upper air chamber and a lower air chamber for driving the piston to move up and down. A push block fixed to the piston is arranged above the piston. The push block is provided with an inclined groove for nesting and installing the pneumatic finger and driving the pneumatic finger to move horizontally. The inclined groove is in the shape of a circular tube.

3. A pneumatic finger cylinder as claimed in claim 1, characterized in that: Spare pneumatic finger installation positions are arranged on the pneumatic finger cylinder, and the distance from each pneumatic finger installation position to the center point of the pneumatic finger cylinder is equal.

4. A pneumatic finger cylinder as claimed in claim 2, characterized in that: The push block is roughly in the shape of a petal, and has six equal petals, and the inclined groove is arranged at the same position on each petal.

5. A pneumatic finger cylinder as claimed in claim 2, characterized in that: An air inlet and an air outlet are also provided which are connected to the upper air cavity and the lower air cavity respectively.

6. A pneumatic finger cylinder as claimed in claim 2, characterized in that: The piston is equipped with a magnetic block, and the pneumatic finger cylinder is equipped with a magnetic sensor for sensing the position of the magnetic block.

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