Finger cylinder with high output torque

Abstract

The utility model discloses a finger air cylinder with high output torque. The finger air cylinder comprises a cylinder barrel, a first piston assembly, a second piston assembly, two clamping sliding table assemblies and a gear meshing assembly, wherein the first piston assembly and the second piston assembly are arranged in the cylinder barrel in parallel, the two clamping sliding table assemblies are symmetrically arranged at the top of the cylinder barrel, and the gear meshing assembly is arranged between the first piston assembly and the second piston assembly. The first piston assembly and the second piston assembly are respectively used for driving a clamping sliding table assembly to move; a first inner cavity and a second inner cavity are formed in the cylinder barrel in parallel in the horizontal direction. The first piston assembly is arranged in the first inner cavity, and the second piston assembly is arranged in the second inner cavity. The cylinder barrel is provided with a first ventilation channel used for controlling the two clamping sliding table assemblies to achieve the clamping action and a second ventilation channel used for controlling the two clamping sliding table assemblies to achieve the loosening action. And the first air passage and the second air passage are communicated between the first inner cavity and the second inner cavity. Under the condition that the stroke of the fingers is widened, high output torque can still be smoothly achieved to bear heavy objects with higher loads, and meanwhile the sufficient stroke can meet the grabbing and carrying requirements of large objects.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial automation equipment pneumatic technical field especially relates to a high output torque finger cylinder. BACKGROUND

[0002] In the industrial automation field, machine equipment is often used to replace manpower to grab and carry objects, and the finger cylinder can realize this function in cooperation with the mechanical hand. However, the existing finger cylinder has the problems of small output torque and short finger movement stroke, and it is difficult to meet the demand of grabbing heavy and large objects, which limits its application range in industrial automation. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a high output torque finger cylinder, which can still smoothly realize high output torque to bear higher load heavy objects under the condition of widening the finger stroke, and sufficient stroke can meet the grabbing and carrying demand of large objects.

[0004] In order to achieve the above-mentioned purpose, the following technical scheme is adopted:

[0005] A high output torque finger cylinder, comprising a cylinder, a first piston assembly and a second piston assembly which are parallel and built-in in the cylinder, two clamping slide table assemblies which are symmetrically arranged at the top of the cylinder, and a gear meshing assembly which is arranged between the first piston assembly and the second piston assembly; the first piston assembly and the second piston assembly are respectively used to drive one clamping slide table assembly to move; the first inner cavity and the second inner cavity are arranged in parallel in the horizontal direction in the cylinder; the first piston assembly is arranged in the first inner cavity, and the second piston assembly is arranged in the second inner cavity; the cylinder is provided with a first air passage for controlling the two clamping slide table assemblies to realize clamping action, and a second air passage for controlling the two clamping slide table assemblies to realize loosening action; the first air passage and the second air passage are both connected between the first inner cavity and the second inner cavity.

[0006] Preferably, the first air passage comprises a first air inlet path arranged at the first end of the cylinder and connected between the outside and the first inner cavity, and a first branch air path connected with the first air inlet path and extending to the second end of the cylinder and then connected with the second inner cavity; the second air passage comprises a second air inlet path arranged at the first end of the cylinder and connected between the outside and the second inner cavity, and a second branch air path connected with the second air inlet path and extending to the second end of the cylinder and then connected with the first inner cavity.

[0007] Preferably, the second end of the cylinder is further provided with a third air inlet path connected between the outside and the first inner cavity, and a fourth air inlet path connected between the outside and the second inner cavity; the third air inlet path is connected with the second branch air path, and the fourth air inlet path is connected with the first branch air path.

[0008] Preferably, the gear engagement assembly comprises a gear arranged between the first piston assembly and the second piston assembly, and a rack arranged on each of the first piston assembly and the second piston assembly; the racks are arranged along the length direction of the first piston assembly and the second piston assembly, and the racks are in meshing connection with the gear.

[0009] Preferably, each of the first piston assembly and the second piston assembly comprises a piston rod, and a piston arranged at each end of the piston rod; a bidirectional sealing element is arranged between each of the piston and the inner wall of the first inner cavity and the second inner cavity; the racks are arranged on the piston rods.

[0010] Preferably, the clamping slide assembly comprises a sliding block and a sliding rail in sliding connection with the sliding block; the sliding rails of the two clamping slide assemblies are integrally formed; the first piston assembly and the second piston assembly are connected with the corresponding sliding blocks through connecting rods; the sliding blocks of the two clamping slide assemblies are arranged at the top of the two ends of the cylinder barrel.

[0011] Preferably, each of the two ends of the cylinder barrel is provided with an end cover; at least one bumper is arranged on each end cover, and the bumper is used for abutting against the corresponding sliding block to achieve buffering.

[0012] Preferably, each of the two ends of the first inner cavity and the second inner cavity is provided with a front and rear cover; each front and rear cover is provided with a buffer pad at one end close to the first piston assembly or the second piston assembly.

[0013] With the above scheme, the beneficial effects of the utility model are as follows:

[0014] The utility model provides a high output torque's finger cylinder, through setting up first airway, second airway all intercommunication in first inner chamber and second inner chamber between, and with gear engagement assembly cooperation can reach the effect of clamping moment pair, under the condition of widening finger stroke, still can smoothly realize high output torque to bear higher load's heavy -duty article, and sufficient stroke can satisfy large -scale article's snatch and carrying demand. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the perspective view of the utility model;

[0016] Figure 2 It is Figure 1 It is the perspective view of the utility model;

[0017] Figure 3 It is the sectional view of the utility model;

[0018] Among them, the drawing mark explanation is as follows:

[0019] 1 - cylinder barrel, 2 - first piston assembly,

[0020] 3 - second piston assembly, 4 - clamping slide assembly,

[0021] 5 - gear meshing assembly, 6 - first inner cavity,

[0022] 7 - second inner cavity, 8 - first air inlet path,

[0023] 9 - first branch air path, 10 - second air inlet path,

[0024] 11 - second branch air path, 12 - connecting rod,

[0025] 13 - end cover, 14 - bumper,

[0026] 15 - front and rear cover, 16 - bumper pad,

[0027] 41 - slider, 42 - slide rail,

[0028] 51 - gear, 52 - rack,

[0029] 21 - piston rod, 22 - piston. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0031] In the utility model, unless otherwise specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0032] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0033] Reference Figures 1 to 3The utility model provides a high output torque's finger cylinder, including cylinder 1, parallel built -in first piston subassembly 2 and second piston subassembly 3 of cylinder 1 installation, two clamping slide platform subassembly 4 of symmetry in the top of cylinder 1 are equipped with, and gear meshing component 4 is equipped between first piston subassembly 2 and second piston subassembly 3, first piston subassembly 2, second piston subassembly 3 are used for driving a clamping slide platform subassembly 4 movement respectively, first inner chamber 6, second inner chamber 7 are provided with in the horizontal direction of cylinder 1 and are in parallel, first piston subassembly 2 is installed in first inner chamber 6, and second piston subassembly 3 is installed in second inner chamber 7, cylinder 1 is equipped with first air passage for controlling two clamping slide platform subassembly 4 realizes the clamping action, and second air passage for controlling two clamping slide platform subassembly 4 realizes the action of loosening, first air passage, second air passage are all communicated between first inner chamber 6 and second inner chamber 7.

[0034] The utility model provides a high output torque's finger cylinder, through gear meshing component 5 to realize the clamping and loosening action of finger, realizes the capture and handling of article in production process through pneumatic transmission technology, and the material is 440C stainless steel material, and the heat treatment hardness can reach HRC58~62.

[0035] Among them, the first air passage includes first gas inlet path 8 that is equipped in the first end of cylinder 1 and is communicated between the outside and first inner chamber 6, and first branch gas path 9 that is communicated with first gas inlet path 8 and extends to the second end of cylinder 1 and is communicated with second inner chamber 7, the second air passage includes second gas inlet path 10 that is equipped in the first end of cylinder 1 and is communicated between the outside and second inner chamber 7, and second branch gas path 11 that is communicated with second gas inlet path 10 and extends to the second end of cylinder 1 and is communicated with first inner chamber 6.

[0036] When the air pipe of gas inlet path is connected to the outside, in the same air passage, the force direction of the air pressure to first piston subassembly 2 and second piston subassembly 3 is opposite, so as to realize the clamping or loosening action of finger. Figure 3 When the first air passage is ventilated, under the action of first branch gas path 9, the air pressure makes first piston subassembly 2 move to the right, and second piston subassembly 3 moves to the left, so as to realize the clamping action of finger, and under the cooperation of gear meshing component 5, the clamping action of finger reaches the effect of force moment pair.

[0037] The second end of the cylinder 1 is further provided with a third air inlet path communicated between the outside and the first inner cavity 6, and a fourth air inlet path communicated between the outside and the second inner cavity 7; the third air inlet path is communicated with the second branch air path 11, and the fourth air inlet path is communicated with the first branch air path 9. By setting the third air inlet path and the fourth air inlet path as backup air inlet paths, the first air inlet path 8 and the second air inlet path 10 can be selected to be connected with the external air pipe to realize ventilation according to the actual application scene, or the third air inlet path and the fourth air inlet path can be selected to be connected with the external air pipe to realize ventilation.

[0038] The gear meshing assembly 5 includes a gear 51 arranged between the first piston assembly 2 and the second piston assembly 3, and a rack 52 arranged on each of the first piston assembly 2 and the second piston assembly 3; the rack 52 is arranged along the length direction of the first piston assembly 2 and the second piston assembly 3, and the rack 52 is meshingly connected with the gear 51.

[0039] The first piston assembly 2 and the second piston assembly 3 each include a piston rod 21, and a piston 22 arranged at each end of the piston rod 21; a bidirectional sealing member is arranged between the piston 22 and the inner wall of the first inner cavity 6 and the second inner cavity 7; the rack 52 is arranged on the piston rod 21. Due to the structural arrangement of the gear meshing assembly 5, in order to ensure the air tightness of the first piston assembly 2 and the second piston assembly 3, the piston rod 21 of the first piston assembly 2 and the second piston assembly 3 is provided with a piston at each end, and a bidirectional sealing member is arranged between the piston 22 and the inner wall of the first inner cavity 6 and the second inner cavity 7, so that bidirectional movement of the piston assembly in the inner cavity can be realized after ventilation.

[0040] The clamping sliding table assembly 4 includes a sliding block 41 and a sliding rail 42 slidably connected with the sliding block 41; the sliding rails of the two clamping sliding table assemblies 4 are integrally formed; the first piston assembly 2 and the second piston assembly 3 are connected with the corresponding sliding blocks 41 through connecting rods 12; the sliding blocks 41 of the two clamping sliding table assemblies 4 are arranged at the top of the two ends of the cylinder 1.

[0041] Each end of the cylinder 1 is provided with an end cover 13; at least one bumper 14 is arranged on each end cover 13 for abutting against the corresponding sliding block 41 to realize buffering. Each of the first inner cavity 6 and the second inner cavity 7 is provided with a front and rear cover 15; each front and rear cover 15 is provided with a buffer pad 16 at one end close to the first piston assembly 2 or the second piston assembly 3.

[0042] After widening the finger movement stroke, the length of the cylinder 1, the first piston assembly 2, the second piston assembly 3, and the slide rail 42 all need to be increased accordingly, especially considering the straightness of the first inner cavity 6 and the second inner cavity 7. Since the piston 22 is located at the end of the piston rod 21, it only contacts the inner wall at both ends of the inner cavity during movement, so the machining precision (straightness) of the middle part of the first inner cavity 6 and the second inner cavity 7 (which is not contacted by the piston) does not need to be considered. By widening the finger movement stroke, the difficulty of ensuring the machining precision of the cylinder 1 is reduced, thereby meeting the smoothness of the finger clamping or loosening action. Furthermore, the area of the slide block 41 can be widened, thereby increasing the installation area of the fingers and bearing heavier loads.

[0043] The high-output torque finger cylinder provided by the utility model can realize the following effects:

[0044] 1) High output torque: can bear heavier loads, improving the load-bearing capacity of the finger cylinder, making it suitable for more complex gripping tasks;

[0045] 2) Increased finger movement stroke: can meet the gripping and handling needs of large objects, expanding the application range of the finger cylinder in industrial automation;

[0046] 3) Increased finger installation area: the installation area of the fingers is larger than that of ordinary finger cylinders, providing more installation area for easy installation and fixation, and enhancing the structural stability of the fingers.

[0047] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, and improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. Obviously, the above embodiments of the utility model are only examples for clear explanation, and are not a limitation on the implementation mode of the utility model. For ordinary skilled persons in the field, various obvious changes, re-adjustments, and replacements can be made without departing from the protection scope of the utility model. There is no need to or it is impossible to exhaust all the implementation modes. Any modification, equivalent replacement, and improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A finger cylinder with high output torque, characterized in that, The device includes a cylinder, a first piston assembly and a second piston assembly mounted parallel to each other within the cylinder, two clamping slide assemblies symmetrically arranged on the top of the cylinder, and a gear meshing assembly located between the first piston assembly and the second piston assembly. The first piston assembly and the second piston assembly are respectively used to drive the movement of a clamping slide assembly. A first inner cavity and a second inner cavity are arranged side by side in a horizontal direction inside the cylinder. The first piston assembly is installed in the first inner cavity, and the second piston assembly is installed in the second inner cavity. The cylinder is provided with a first vent for controlling the two clamping slide assemblies to achieve clamping action, and a second vent for controlling the two clamping slide assemblies to achieve releasing action. Both the first vent and the second vent are connected between the first inner cavity and the second inner cavity.

2. The high-output torque finger cylinder according to claim 1, characterized in that, The first air passage includes a first air intake passage disposed at the first end of the cylinder and connected between the outside and the first inner cavity, and a first branch air passage connected to the first air intake passage and extending to the second end of the cylinder and then connected to the second inner cavity; the second air passage includes a second air intake passage disposed at the first end of the cylinder and connected between the outside and the second inner cavity, and a second branch air passage connected to the second air intake passage and extending to the second end of the cylinder and then connected to the first inner cavity.

3. The high-output torque finger cylinder according to claim 2, characterized in that, The second end of the cylinder is also provided with a third air intake passage connecting the outside and the first inner cavity, and a fourth air intake passage connecting the outside and the second inner cavity; the third air intake passage is connected to the second branch air passage, and the fourth air intake passage is connected to the first branch air passage.

4. The high-output torque finger cylinder according to claim 1, characterized in that, The gear meshing assembly includes a gear disposed between the first piston assembly and the second piston assembly, and a rack disposed on the first piston assembly and the second piston assembly respectively; the rack is disposed along the length direction of the first piston assembly and the second piston assembly, and the rack is meshed with the gear.

5. The high-output torque finger cylinder according to claim 4, characterized in that, Both the first piston assembly and the second piston assembly include a piston rod and a piston at each end of the piston rod; a bidirectional seal is provided between the piston and the inner wall of the first inner cavity and the second inner cavity; the rack is provided on the piston rod.

6. The high-output torque finger cylinder according to claim 1, characterized in that, The clamping slide assembly includes a slider and a slide rail slidably connected to the slider; the slide rails of the two clamping slide assemblies are integrally formed; the first piston assembly, the second piston assembly and the corresponding slider are connected by a connecting rod; the sliders of the two clamping slide assemblies are arranged at the top two ends of the cylinder.

7. The high-output torque finger cylinder according to claim 6, characterized in that, The cylinder is provided with an end cap at each end; each end cap is provided with at least one buffer for abutting against the corresponding slider to achieve buffering.

8. The high-output torque finger cylinder according to claim 1, characterized in that, Each end of the first inner cavity and the second inner cavity is provided with a front and rear cover; each front and rear cover is provided with a buffer pad at one end near the first piston assembly or the second piston assembly.

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