Pneumatic gripper mechanism for coiled materials

Abstract

The pneumatic gripper mechanism comprises an air cylinder body, an inner piston rod, an outer piston rod, a bottom end cover and a top end cover, wherein the inner piston rod and the outer piston rod are sequentially arranged in an air cylinder from outside to inside in a sealing mode, and the bottom end cover and the top end cover are arranged at the upper end and the lower end of the air cylinder body. At least two through grooves are evenly formed in the outer circle face of the outer end of the outer piston rod, and clamping jaws are arranged in the through grooves. According to the utility model, through the adoption of the air cylinder with the double-piston design and the mutual matching between the inner piston and the outer piston, the clamping jaws are pushed to radially extend out when the pistons extend out, so that the inner circular surface of a rolled material is tightly supported, and the effect of clamping (supporting) the rolled material is achieved; the structure is ingenious and reliable, the efficiency is high, and meanwhile the requirement for automation can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic supply of disc-shaped materials in the tobacco industry, and particularly relates to a pneumatic gripper mechanism for disc-shaped materials or rolled materials. Background Art

[0002] During the processing of disc-shaped materials, a claw device is required to grasp the corresponding disc-shaped materials, and further, the materials are lifted to the top of the machine through a robotic arm device to achieve the supply of materials. In the prior art, the commonly used grasping device is installed relative to the frame, the grasping part is circular, and when grasping materials, it moves to the outside of the materials and fixes and grasps the materials by tightening inward. The overall positioning efficiency is relatively low, and when grasping materials, it generally requires manual operation to place the stacked materials at a designated position, and the physical positioning of the materials is completed through manual operation to facilitate the subsequent grasping operation of the claws. The overall efficiency is relatively low. The processing equipment for strip-shaped materials in the existing production line has a high degree of automation, resulting in the inability of the existing grasping device to meet the requirements of high-efficiency production of the existing production line. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a pneumatic gripper mechanism for rolled materials is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A pneumatic gripper mechanism for rolled materials, including a cylinder block, an inner piston rod and an outer piston rod which are hermetically arranged in the cylinder from outside to inside in sequence, and a bottom end cover and a top end cover arranged at the upper and lower ends of the cylinder block; the outer piston rod is located in the rod chamber surrounded by the inner piston rod and the cylinder block, and the rodless chamber of the cylinder is surrounded by the rear end of the inner piston rod, the bottom end cover and the cylinder block; the inner piston rod is slidably sleeved in the outer piston rod, at least two through grooves are uniformly arranged on the outer circumferential surface at the outer end of the outer piston rod, and claws are arranged in the through grooves; the claws extend into the inner cavity of the outer piston rod and are clamped in the clamping grooves arranged on the outer circumferential surface of the inner piston rod; at least two oblong holes are arranged on the plate surface of the claws located in the clamping grooves, and pins passing through the oblong holes are arranged on the clamping grooves of the inner piston rod, and the oblong holes are all inclined inward in parallel in the direction towards the top end cover, so that when the inner piston rod makes an outward extension or contraction movement alone, the claws can be pushed to axially extend or retract, so as to tighten the inner hole of the rolled materials and realize the grasping of the rolled materials.

[0006] Preferably, a plurality of axial blind holes are arranged on the outer end surface of the outer piston rod, springs are arranged in the blind holes, and a spring pressing cover is arranged on the inner piston rod.

[0007] In the present utility model, compared with the prior art, the advantages are as follows: By adopting a cylinder with a double-piston design, through the mutual cooperation between the inner and outer pistons, when the piston extends, it simultaneously pushes the jaws to radially extend, so as to tighten the inner circular surface of the coiled material, thereby achieving the clamping (tightening) effect on the coiled material; its structure is ingenious and reliable, with high efficiency, and can meet the needs of automation at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram (axial sectional view) of the present utility model.

[0009] Figure 2 It is Figure 1 a sectional view taken along the line A-A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0010] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0011] Referring to Figure 1-2 , the pneumatic gripper mechanism for coiled materials in this embodiment includes a cylinder block 41, an inner piston rod 42 and an outer piston rod 43 that are sequentially and hermetically arranged in the cylinder from outside to inside, and a bottom end cover 47 and a top end cover 48 arranged at the upper and lower ends of the cylinder block; the outer piston rod 43 is located in the rod chamber surrounded by the inner piston rod 42 and the cylinder block 41, and the rodless chamber of the cylinder is surrounded by the rear end of the inner piston rod 42, the bottom end cover 47 and the cylinder block 41; the inner piston rod 42 is slidably sleeved inside the outer piston rod 43, and at least two through grooves are evenly arranged on the outer circumferential surface at the outer end of the outer piston rod 43, and jaws 44 are arranged in each of the through grooves; the jaws 44 extend into the inner cavity of the outer piston rod 43 and are clamped in the card slots opened on the outer circumferential surface of the inner piston rod 42 (the card slots are through holes, which is convenient for clamping and extending to the outside of the inner piston rod 42); at least two oblong holes are opened on the plate surface of the jaws 44 located in the card slots, and a pin shaft 45 passing through the oblong holes is arranged on the card slots of the inner piston rod 42, and the oblong holes are all inclined inward in parallel in the direction towards the top end cover 48, so that when the inner piston rod 42 makes an independent extension or contraction movement outwards, it can push the jaws to axially extend or retract, thereby tightening the inner hole of the coiled material and realizing the grasping of the coiled material.

[0012] In this embodiment, a plurality of axial blind holes are opened on the outer end surface of the outer piston rod 43, and springs 46 are arranged in each of the blind holes, and a spring pressing cover 49 is arranged on the inner piston rod 42 to play a preloading and buffering effect when the outer piston rod 43 extends outwards.

[0013] The working principle of this embodiment is as follows: When starting to inflate the inside of the cylinder block, under the action of the spring 46, the inner piston 42, the outer piston 43 and the claw 44 remain relatively stationary, and the inner piston rod 42 and the outer piston rod 43 extend simultaneously; when the outer piston rod 43 is fully extended, the inner piston rod 42 continues to move under the thrust of the air, and the pin shaft 45 moves in the long slot hole of the claw 44 to make the claw 44 extend, which can tightly hold the material; when carrying out material docking, the end of the docking part abuts against the shaft end deep inside the inner piston, and then deflation is carried out. Under the action of the spring 46, the inner piston will first retract, and under the action of the pin shaft 45, the claw 44 will be driven to retract into the inside of the outer piston rod 43, and then the docking part continues to move forward until the inner piston rod 42 and the outer piston rod 43 are pushed to the initial position, and the grasping action is completed.

[0014] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A pneumatic gripper mechanism for rolled materials, characterized in that: The invention comprises a cylinder body (41), an inner piston rod (42) and an outer piston rod (43) which are sealed and arranged in the cylinder from the outside to the inside, and a bottom end cover (47) and a top end cover (48) which are arranged at the upper and lower ends of the cylinder body; the outer piston rod (43) is located in a rod cavity surrounded by the inner piston rod (42) and the cylinder body (41), and the rodless cavity of the cylinder is surrounded by the rear end of the inner piston rod (42), the bottom end cover (47) and the cylinder body (41); the inner piston rod (42) is slidably mounted in the outer piston rod (43), and at least two through holes are evenly distributed on the outer circumferential surface of the outer end of the outer piston rod (43). A slot is formed in each of the through slots, wherein a claw (44) is arranged in each of the through slots; the claw (44) extends into the inner cavity of the outer piston rod (43) and is clamped in a slot formed on the outer circumferential surface of the inner piston rod (42); at least two oblong holes are formed on the plate surface of the claw (44) located in the slot, and a pin (45) passing through the oblong holes is arranged on the slot of the inner piston rod (42); the oblong holes are arranged in parallel and inclined inwardly in the direction of the top end cover (48), so that when the inner piston rod (42) extends or contracts outward alone, the claw can be pushed to extend or retract axially, thereby tightening the inner hole of the rolled material and realizing the grasping of the rolled material.

2. The pneumatic gripper mechanism for rolled materials according to claim 1 is characterized in that: A plurality of axial blind holes are provided on the outer end surface of the outer piston rod (43), springs (46) are arranged in the blind holes, and a spring pressure cover (49) is arranged on the inner piston rod (42).

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