Octagonal tube gripper with repeated positioning function and gripper protection function

Abstract

The utility model discloses an octagonal pipe gripper with a repeatable positioning function and a gripper protection function, and particularly relates to the technical field of octagonal pipe grippers, the octagonal pipe gripper comprises an octagonal pipe, a mounting plate used for being connected with a robot is arranged at the top end of the octagonal pipe, and a clamping air cylinder is arranged at the outer end of the octagonal pipe through a connecting piece. The connecting piece comprises a lower connecting piece and an upper connecting piece which are connected with each other through a bolt, and the octagonal pipe is clamped between the lower connecting piece and the upper connecting piece. The positioning piece is installed in the groove of the octagonal pipe, the positioning hole can be matched with the hollow pin rod on the upper connecting piece, repositioning is not needed when the lower connecting piece and the upper connecting piece are detached and installed again, only the position of the positioning hole needs to be found, and the hollow pin rod can be inserted into the positioning hole again. In this way, the previous positions of the lower connecting piece and the upper connecting piece can be found, and the function of repeated positioning is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of octagonal pipe grippers, and particularly relates to an octagonal pipe gripper with a repeatable positioning function and a gripper protection function. Background Art

[0002] An octagonal pipe gripper is a commonly used grasping device in industry. For example, it grasps and transports workpieces on a mechanical production line, and grasps objects and moves them to high places during construction. Since its main frame is made of octagonal pipes, it is called an octagonal pipe gripper.

[0003] The octagonal pipe gripper consists of multiple parts such as a gripper connecting plate, an octagonal pipe main frame, and a grasping unit. The main part of the grasping unit is a clamping cylinder, which is installed on the octagonal pipe main frame through a connecting piece. For example, an octagonal pipe material taking gripper with a publication number of CN221140187U in the prior art.

[0004] However, in the prior art, once the connecting piece is disassembled and separated from the octagonal pipe main frame, it is very difficult to locate the original installation position during subsequent installation, making repeated installation very inconvenient. Content of the Utility Model

[0005] The purpose of the utility model is to provide an octagonal pipe gripper with a repeatable positioning function and a gripper protection function. By installing a positioning piece in the groove of the octagonal pipe, when the connecting piece and the upper connecting piece are disassembled and reinstalled, there is no need for repositioning. Just find the position of the positioning hole so that the hollow pin rod can be inserted into the positioning hole again, and thus the previous positions of the lower connecting piece and the upper connecting piece can be found, realizing the function of repeatable positioning.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an octagonal pipe gripper with a repeatable positioning function and a gripper protection function, including an octagonal pipe. An installation plate for connecting with a robot is arranged at the top end of the octagonal pipe. A clamping cylinder is arranged at the outer end of the octagonal pipe through a connecting piece. The connecting piece includes a lower connecting piece and an upper connecting piece connected to each other by bolts. The octagonal pipe is clamped between the lower connecting piece and the upper connecting piece;

[0007] A positioning pin is arranged at the top end of the upper connecting piece. The positioning pin includes a hollow pin rod penetrating through the upper connecting piece, and a lower screw head is fixedly arranged at the top end of the hollow pin rod;

[0008] A positioning piece is arranged in the groove of the octagonal pipe. The positioning piece corresponds to the positioning pin one by one. The positioning piece includes an installation rod threadedly connected to the octagonal pipe. A positioning hole is opened at the top end of the installation rod, and the bottom end of the hollow pin rod can be inserted downward into the positioning hole.

[0009] Furthermore, a screw head is fixedly provided at the outer end of the mounting rod. A first spring is fixedly provided on the inner wall of the positioning hole. A dust-proof sheet made of rubber is fixedly provided at the top end of the first spring. When the first spring naturally extends, the top end of the dust-proof sheet is flush with the top end of the mounting rod.

[0010] Furthermore, a second spring is fixedly provided at the bottom end of the lower screw head. The second spring is located between the lower screw head and the upper connecting member. The elastic coefficient of the second spring is much larger than that of the first spring.

[0011] Furthermore, a support airbag is fixedly provided at the outer end of the hollow pin rod. A plurality of air vents are opened at the outer end of the hollow pin rod. The air vents are located inside the support airbag;

[0012] An extrusion rod is provided inside the hollow pin rod. The outer end of the extrusion rod is threadedly connected to the inner wall of the hollow pin rod. The top end of the extrusion rod extends to the top of the hollow pin rod and is fixedly provided with an upper screw head.

[0013] Furthermore, a lubrication assembly is inlaid on the upper connecting member. The lubrication assembly includes a sleeve. The bottom end of the second spring is detachably connected to the top end of the sleeve;

[0014] An inlay groove is opened on the inner wall of the sleeve. A sponge is inlaid on the inner wall of the inlay groove. The inner side of the sponge is in contact with the outer end of the hollow pin rod. Two oil injection holes are opened at the top end of the sleeve. Lubricating oil can be injected into the inlay groove through the oil injection holes.

[0015] Furthermore, two engineering separation components are provided at the outer end of the clamping cylinder. The engineering separation components include a safety rope and two fixed clamps connected to each other by bolts. The safety rope is provided on one side of the fixed clamp. The two ends of the safety rope are respectively connected to the top and bottom of the corresponding fixed clamp.

[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0017] 1. By installing the positioning member in the groove of the octagonal tube, the positioning hole can cooperate with the hollow pin rod on the upper connecting member. When disassembling and reinstalling the lower connecting member and the upper connecting member, there is no need for repositioning. Just find the position of the positioning hole so that the hollow pin rod can be inserted into the positioning hole again, and thus the previous positions of the lower connecting member and the upper connecting member can be found, realizing the function of repeatable positioning;

[0018] 2. An engineering separation component is provided at the connection between the lower connecting piece and the clamping cylinder. The fixed hoop of the engineering separation component will break when the force is too large. The safety rope is used to prevent the workpiece from falling, effectively reducing the loss caused by impact, realizing the function of gripper protection, and solving the problem that the traditional structure impact may cause damage to the gripper or other valuable components on the gripper, resulting in greater economic losses. At the same time, the fixed hoop can be directly replaced after breaking, which is convenient to replace and has low cost. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the overall structure diagram of the present invention;

[0021] Figure 2 It is the structure diagram of the upper and lower connecting pieces of the present invention;

[0022] Figure 3 It is of the present invention Figure 2 Enlarged view of part A;

[0023] Figure 4 It is the side view of the clamping cylinder of the present invention;

[0024] Figure 5 It is the cross-sectional view of the positioning pin of the present invention;

[0025] Figure 6 It is the internal structure diagram of the positioning screw of the present invention;

[0026] Figure 7 It is the internal structure diagram of the lubrication component of the present invention.

[0027] Description of the reference numerals:

[0028] 1. Octagonal tube; 2. Lower connecting piece; 3. Upper connecting piece; 4. Clamping cylinder; 5. Fixed hoop; 6. Positioning piece; 601. Mounting rod; 602. Screw head; 603. Positioning hole; 604. First spring; 605. Dust-proof sheet; 7. Positioning pin; 701. Hollow pin rod; 702. Vent hole; 703. Support airbag; 704. Lower screw head; 705. Second spring; 706. Upper screw head; 707. Extrusion rod; 8. Lubrication component, 801. Sleeve; 802. Inlay groove; 803. Sponge; 804. Oil injection hole; 9. Mounting plate; 10. Safety rope. Detailed Description of the Embodiments

[0029] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0030] The present utility model provides an octagonal tube gripper with a repeatable positioning function and a gripper protection function as shown in Figure 1-7 Figure 5. The octagonal tube gripper includes an octagonal tube 1. An installation plate 9 for connecting with a robot is provided at the top end of the octagonal tube 1. A clamping cylinder 4 is provided at the outer end of the octagonal tube 1 through a connecting member. The connecting member includes a lower connecting member 2 and an upper connecting member 3 which are connected to each other by bolts. The octagonal tube 1 is clamped between the lower connecting member 2 and the upper connecting member 3.

[0031] A positioning pin 7 is provided at the top end of the upper connecting member 3. The positioning pin 7 includes a hollow pin rod 701 penetrating through the upper connecting member 3. A lower screw head 704 is fixedly provided at the top end of the hollow pin rod 701.

[0032] A positioning member 6 is provided in the groove of the octagonal tube 1. The positioning member 6 corresponds to the positioning pin 7 one by one. The positioning member 6 includes a mounting rod 601 threadedly connected to the octagonal tube 1. A positioning hole 603 is formed at the top end of the mounting rod 601. The bottom end of the hollow pin rod 701 can be inserted downward into the positioning hole 603.

[0033] The positioning member 6 is installed in the groove of the octagonal tube 1. The upper connecting member 3 installed at the outer end of the octagonal tube 1 is provided with a positioning pin 7. The bottom end of the hollow pin rod 701 passes through the upper connecting member 3 downward and is inserted into the positioning hole 603 of the positioning member 6. When the lower connecting member 2 and the upper connecting member 3 are disassembled and reinstalled, there is no need for repositioning because the positioning member 6 is always fixed on the octagonal tube 1. Only the position of the positioning hole 603 needs to be found so that the hollow pin rod 701 can be reinserted into the positioning hole 603, and in this way, the previous positions of the lower connecting member 2 and the upper connecting member 3 can be found, realizing the function of repeatable positioning.

[0034] During the idle process, dust is very likely to enter the positioning hole 603. To prevent dust, as shown in Figure 5 Figure 6, a screw head 602 is fixedly provided at the outer end of the mounting rod 601. A first spring 604 is fixedly provided on the inner wall of the positioning hole 603. A dust-proof sheet 605 made of rubber is fixedly provided at the top end of the first spring 604. When the first spring 604 is naturally extended, the top end of the dust-proof sheet 605 is flush with the top end of the mounting rod 601.

[0035] In the idle state, the first spring 604 naturally extends, making the top of the dust-proof piece 605 flush with the top of 607, thereby covering the opening of the positioning hole 603 to prevent dust from falling into the positioning hole 603. During use, the hollow pin rod 701 can push the dust-proof piece 605 downward, causing the dust-proof piece 605 to return inside the positioning hole 603, and the first spring 604 will also be compressed. After the hollow pin rod 701 is pulled out, the first spring 604 pushes the dust-proof piece 605 to naturally rebound to the opening of the positioning hole 603.

[0036] If the positioning pin 7 is not integrally connected to the upper connecting piece 3, the positioning pin 7 is likely to be lost. As Figure 3-5 shown, a second spring 705 is fixedly provided at the bottom end of the lower screw head 704. The second spring 705 is located between the lower screw head 704 and the upper connecting piece 3, and the elastic coefficient of the second spring 705 is much larger than that of the first spring 604.

[0037] A support airbag 703 is fixedly provided at the outer end of the hollow pin rod 701. A plurality of ventilation holes 702 are provided at the outer end of the hollow pin rod 701, and the ventilation holes 702 are located inside the support airbag 703;

[0038] An extrusion rod 707 is provided inside the hollow pin rod 701. The outer end of the extrusion rod 707 is threadedly connected to the inner wall of the hollow pin rod 701. The top end of the extrusion rod 707 extends to the top of the hollow pin rod 701 and is fixedly provided with an upper screw head 706.

[0039] During the process of the hollow pin rod 701 being inserted downward into the positioning hole 603, the elastic force of the second spring 705 pulls the lower screw head 704 downward, and then drives the hollow pin rod 701 downward, so that it is tightly fixed inside the positioning hole 603. Except for manual upward pulling, the hollow pin rod 701 will not fall off, and the positioning pin 7 as a whole can also be integrally connected to the upper connecting piece 3 to avoid loss;

[0040] At the same time, the upper screw head 706 and the extrusion rod 707 can be rotated to squeeze the air inside the hollow pin rod 701. The air is compressed and enters the support airbag 703 through the ventilation holes 702. As the hollow pin rod 701 enters the positioning hole 603, the entry of air causes the support airbag 703 to expand and be in close contact with the inner wall of the positioning hole 603. This method is to fill the gap between the outer end of the hollow pin rod 701 and the inner wall of the positioning hole 603 with the expanded support airbag 703 to prevent loosening between the positioning pin 7 and the positioning member 6, resulting in a decrease in the positioning accuracy of the connecting member.

[0041] During the movement of the positioning pin 7, in order to reduce friction, as Figure 3 、 5As shown in Figures 6 and 7, a lubrication assembly 8 is embedded in the upper connecting member 3. The lubrication assembly 8 includes a sleeve 801, and the bottom end of the second spring 705 is detachably connected to the top end of the sleeve 801;

[0042] An embedding groove 802 is formed in the inner wall of the sleeve 801. A sponge 803 is embedded in the inner wall of the embedding groove 802. The inner side of the sponge 803 is in contact with the outer end of the hollow pin rod 701. Two oil injection holes 804 are formed in the top end of the sleeve 801, and lubricating oil can be injected into the embedding groove 802 through the oil injection holes 804.

[0043] Lubricating oil can be injected into the embedding groove 802 through the oil injection holes 804, so that the sponge 803 contacts the outer end of the hollow pin rod 701 after adsorbing the lubricating oil. In this way, during the up and down movement of the hollow pin rod 701, the lubricating oil can be applied to the outer end of the hollow pin rod 701 or the supporting airbag 703, reducing the friction between the hollow pin rod 701, the supporting airbag 703 and the inner wall of the positioning hole 603, and reducing the wear during use.

[0044] To avoid damage to this gripper, as Figure 2 shown, two engineering separation components are provided at the outer end of the clamping cylinder 4. The engineering separation components include a safety rope 10 and two fixed clamps 5 connected to each other by bolts. The safety rope 10 is provided on one side of the fixed clamp 5. The two ends of the safety rope 10 are respectively connected to the top and bottom of the corresponding fixed clamp 5. Compared with other core components, the hardness of the fixed clamp 5 is relatively weak. After the engineering separation component is subjected to an impact force greater than or equal to 1627 N·m, the fixed clamp 5 will break first. The safety rope 10 is used to prevent the workpiece from falling, effectively reducing the loss caused by the impact. Without the fixed clamp 5, the impact may cause damage to the robot or damage to the other valuable components on the gripper, resulting in greater economic losses. At the same time, this component can be directly replaced after breaking, which is convenient to replace and requires less cost.

[0045] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. An octagonal tube gripper with repeatable positioning function and gripper protection function, comprising an octagonal tube (1), wherein an installation plate (9) for connecting with a robot is arranged at the top of the octagonal tube (1), and a clamping cylinder (4) is arranged at the outer end of the octagonal tube (1) through a connecting piece, characterized in that: The connecting piece includes a lower connecting piece (2) and an upper connecting piece (3) which are connected to each other by bolts, and the octagonal tube (1) is clamped between the lower connecting piece (2) and the upper connecting piece (3); A positioning pin (7) is provided at the top end of the upper connecting piece (3). The positioning pin (7) includes a hollow pin rod (701) penetrating through the upper connecting piece (3), and a lower screw head (704) is fixedly provided at the top end of the hollow pin rod (701); A positioning member (6) is provided in the groove of the octagonal tube (1). The positioning members (6) correspond to the positioning pins (7) one by one. The positioning member (6) includes a mounting rod (601) threadedly connected to the octagonal tube (1). A positioning hole (603) is formed at the top end of the mounting rod (601), and the bottom end of the hollow pin rod (701) can be inserted downward into the positioning hole (603); Two engineering separation components are provided at the outer end of the clamping cylinder (4). The engineering separation components include a safety rope (10) and two fixed clamps (5) connected to each other by bolts. The safety rope (10) is provided on one side of the fixed clamp (5), and the two ends of the safety rope (10) are respectively connected to the top and bottom of the corresponding fixed clamp (5).

2. The octagonal tube gripper with repeatable positioning function and gripper protection function according to claim 1, characterized in that: A screw head (602) is fixedly provided at the outer end of the mounting rod (601). A first spring (604) is fixedly provided on the inner wall of the positioning hole (603), and a dust-proof sheet (605) made of rubber is fixedly provided at the top end of the first spring (604).

3. An octagonal tube gripper with repeatable positioning function and gripper protection function according to claim 1, characterized in that: A second spring (705) is fixedly provided at the bottom end of the lower screw head (704), and the second spring (705) is located between the lower screw head (704) and the upper connecting piece (3).

4. The octagonal tube gripper with repeatable positioning function and gripper protection function according to claim 1, characterized in that: A support airbag (703) is fixedly provided at the outer end of the hollow pin rod (701). A plurality of ventilation holes (702) are formed at the outer end of the hollow pin rod (701), and the ventilation holes (702) are located inside the support airbag (703); An extrusion rod (707) is provided inside the hollow pin rod (701). The outer end of the extrusion rod (707) is threadedly connected to the inner wall of the hollow pin rod (701), and the top end of the extrusion rod (707) extends to the top of the hollow pin rod (701) and is fixedly provided with an upper screw head (706).

5. The octagonal tube gripper with repeatable positioning function and gripper protection function according to claim 3, characterized in that: A lubrication assembly (8) is embedded in the upper connecting piece (3). The lubrication assembly (8) includes a sleeve (801), and the bottom end of the second spring (705) is detachably connected to the top end of the sleeve (801); An embedding groove (802) is formed on the inner wall of the sleeve (801). A sponge (803) is embedded on the inner wall of the embedding groove (802). The inner side of the sponge (803) is in contact with the outer end of the hollow pin rod (701), and two oil injection holes (804) are formed at the top end of the sleeve (801).

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