Conveying piece for rotary clamping device and rotary clamping device

Abstract

The utility model provides a conveying part for a rotary clamping device and the rotary clamping device.The conveying part for the rotary clamping device comprises a conveying shaft, a vacuum air hole penetrating in the axial direction of the conveying shaft is formed in the conveying shaft, and a vacuum communicating hole communicating with the vacuum air hole is formed in the outer wall of the conveying shaft; the conveying part is used for forming a vacuum air path in the rotary clamping device, so that particles and dust generated by the rotary clamping device and dust and particles in the surrounding environment are sucked and conveyed, and air is prevented from polluting the clean room.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a conveying part for a rotary clamping device and the rotary clamping device. Background Art

[0002] In industrial automated production, for processes such as picking up, conveying, loading and unloading workpieces or various materials, and replacing accessories, more and more use loading and unloading manipulators to replace manual labor, especially in processes where the space is narrow or the operation is simple and repetitive. The manipulator greatly improves the degree of automation and the production line efficiency. As a kind of manipulator, the rotary clamping device can complete the automated operations of workpiece grasping, loading, unloading, clamping and other processes.

[0003] Some rotary clamping devices need to be used in a clean room. In this environment, the special environment of the clean room needs to be considered, and the quantity of dust and particles in the production area is monitored. However, the rotary clamping device may generate particles during operation, such as metal debris, etc. These particles will contaminate the air in the clean room and affect the product quality.

[0004] Therefore, it is necessary to design a conveying part for a rotary clamping device and the rotary clamping device to enable such manipulators as the rotary clamping device to operate safely and reliably in the clean room, while meeting the high cleanliness requirements of the clean room. Summary of the Utility Model

[0005] In view of some or all of the above technical problems existing in the prior art, the utility model provides a conveying part for a rotary clamping device and the rotary clamping device. In the rotary clamping device, the conveying part for the rotary clamping device helps to form a vacuum air path, so that the rotary clamping device can be used in a clean occasion.

[0006] According to one aspect of the utility model, a conveying part for a rotary clamping device is provided, which includes a conveying shaft. A vacuum air hole penetrating axially along the conveying shaft is arranged on the conveying shaft, and a vacuum communication hole communicated with the vacuum air hole is arranged on the outer wall of the conveying shaft.

[0007] In one embodiment, an opening and closing air hole penetrating axially along the conveying shaft is arranged on the conveying shaft, and an opening and closing communication hole communicated with each opening and closing air hole is arranged on the outer wall of the conveying shaft. The opening and closing air hole and the vacuum air hole are spaced in the circumferential direction of the conveying shaft.

[0008] In one embodiment, a conveying hole penetrating axially along the conveying shaft is arranged on the conveying shaft, and the conveying hole is arranged at intervals with the vacuum air hole.

[0009] According to another aspect of the present utility model, there is provided a rotary clamping device, including a mounting base, a swing cylinder fixedly connected to the mounting base, a rotary base fixedly connected to the swing table of the swing cylinder, and a jaw fixedly connected to the rotary base. Mounting holes are provided on the mounting base, the swing cylinder, and the rotary base. According to the above-mentioned conveying member for the rotary clamping device, it is intermittently embedded into the mounting holes. One vacuum communication hole on the conveying shaft communicates with the gap formed between the conveying shaft and the mounting base, and the gap formed between the conveying shaft and the mounting base is communicated to the vacuum pipe nozzle provided on the mounting base through a first vacuum pipe. One vacuum communication hole on the conveying shaft communicates with the gap formed between the conveying shaft and the rotary base, and the gap formed between the conveying shaft and the rotary base is communicated to the finger gaps of the jaw through a second vacuum pipe.

[0010] In one embodiment, one vacuum communication hole on the conveying shaft communicates with the gap formed between the conveying shaft and the gear shaft of the swing cylinder, and the gap formed between the conveying shaft and the gear shaft of the swing cylinder is communicated to the space between the gear shaft of the swing cylinder and the main body of the swing cylinder through a third vacuum pipe.

[0011] In one embodiment, a first limiting boss is provided on the mounting base, and a second limiting boss is provided on the rotary base. Axial ends of the conveying shaft respectively abut against the first limiting boss and the second limiting boss.

[0012] In one embodiment, steel balls for blocking the vacuum pores are provided between the first limiting boss and the conveying shaft, and between the second limiting boss and the conveying shaft.

[0013] In one embodiment, a set screw hole is provided on the mounting base, and a set screw for tightly pressing the conveying shaft is matchingly provided in the set screw hole.

[0014] In one embodiment, multiple sealing rings are provided between the conveying shaft and the hole wall of the mounting hole.

[0015] In one embodiment, a jaw pipe nozzle is provided on the mounting base, and the jaw pipe nozzle communicates with the opening and closing air holes provided on the conveying shaft.

[0016] Compared with the prior art, the advantages of the present utility model are as follows: The conveying member for the rotary clamping device forms a vacuum air path in the rotary clamping device, thereby sucking and transporting the particles and dust generated by the rotary clamping device itself, avoiding air pollution in the clean room. Description of the Drawings

[0017] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the figures:

[0018] Figure 1 A perspective view of a conveyor for a rotary clamping device according to an embodiment of the present utility model is shown;

[0019] Figure 2 An end view of a conveyor for a rotary clamping device according to an embodiment of the present utility model is shown;

[0020] Figure 3 A perspective view of a rotary clamping device according to an embodiment of the present utility model is shown;

[0021] Figure 4 A front view of a rotary clamping device according to an embodiment of the present utility model is shown;

[0022] Figure 5 A side view of a rotary clamping device according to an embodiment of the present utility model is shown;

[0023] Figure 6 A sectional view of a rotary clamping device according to an embodiment of the present utility model is shown;

[0024] Figure 7 is an enlarged view taken from Figure 6 at A;

[0025] Figure 8 is an enlarged view taken from Figure 6 at B;

[0026] Figure 9 is an enlarged view taken from Figure 6 at C.

[0027] In the accompanying drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. Detailed Description of the Invention

[0028] In order to make the technical solutions and advantages of the present utility model clearer and more understandable, the exemplary embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than an exhaustive list of all embodiments. And without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0029] An embodiment of the present utility model provides a conveyor for a rotary clamping device. As shown in Figure 1 and 2As shown, the conveyor for the rotary clamping device includes a conveyor shaft 1. A vacuum hole 11 is provided on the conveyor shaft 1. The vacuum hole 11 is distributed in a through manner along the axial direction of the conveyor shaft 1 and is used as part of the vacuum air path. A vacuum connection hole 12 is also provided on the conveyor shaft. The vacuum connection hole 12 is provided on the wall of the conveyor shaft 1 and is connected inside and outside, that is, the inner end is connected to the vacuum hole 11, and the outer end is connected to the outside. The vacuum connection hole 12 is used to connect the outside and the vacuum hole 11 to serve as part of the vacuum air path.

[0030] During use, as Figures 4 to 9 shown, the conveyor shaft 1 is placed inside the rotary clamping device, and the vacuum hole 11 serves as part of the vacuum air path to suck in and convey some particles to ensure the cleanliness of the environment where the rotary clamping device is located. The vacuum connection hole 12 is mainly used to connect to the outside to suck the particles outside into the vacuum hole 11 or transport the particles in the vacuum hole 11 out. It can be understood that there can be multiple vacuum connection holes 12, which are arranged according to the needs of the rotary clamping device itself. When there are multiple vacuum connection holes 12, different vacuum connection holes 12 are arranged at intervals along the axial direction of the conveyor shaft 1. It can be seen that the conveyor shaft 1 of the present application can be used to form a vacuum air path in the rotary clamping device, thereby sucking in and transporting the particles and dust generated by the rotary clamping device itself, avoiding air pollution in the clean room, ensuring that the rotary clamping device can operate safely and reliably in the clean room, and at the same time meeting the high cleanliness requirements of the clean room. It should be noted that in the present application, three vacuum connection holes 12 are taken as an example for illustration, and for clearer expression, these three vacuum connection holes 12 are respectively labeled as 121, 122, and 123.

[0031] In one embodiment, an opening and closing air hole 13 is provided on the conveyor shaft 1. The opening and closing air hole 13 penetrates along the axial direction of the conveyor 1 shaft. The opening and closing air hole 13 serves as part of the opening and closing air path of the rotary clamping device. At the same time, an opening and closing connection hole 14 communicating with each opening and closing air hole 13 is provided on the wall of the conveyor shaft 1. In addition, the opening and closing air hole 13 and the vacuum hole 11 are spaced apart in the circumferential direction of the conveyor shaft 1. For example, the opening and closing air hole 13 and the vacuum hole 11 are arranged in an arc shape in the radial cross-section of the conveyor shaft 1. This setting not only facilitates the arrangement of the opening and closing air hole 13 and the vacuum hole 11, but also facilitates the arrangement of the vacuum connection hole 12 and the opening and closing connection hole 14, and is easy to process and produce. In addition, this setting also ensures the reasonable optimization of the structure of the conveyor shaft 1, thereby ensuring the strength of the conveyor shaft 1 itself.

[0032] A conveying hole 15 is also provided on the conveyor shaft 1. The conveying hole 15 penetrates along the axial direction of the conveyor shaft 1. The conveying hole 15 is used to accommodate the magnetic opening line to serve as the laying channel for the magnetic opening line. The conveying hole 15 is arranged at intervals with the vacuum hole 11. In addition, the conveying hole 15 is a special-shaped hole. Specifically, asFigure 2 As shown, the conveying hole 15 is configured as a generally quadrilateral rhombus hole. However, in order to ensure uniform stress distribution, the sides of the quadrilateral rhombus hole are smoothly connected. This setting can make the layout of the conveying hole 15, the opening and closing air hole 13, and the vacuum hole 11 reasonable on the cross-section of the conveying shaft 1, which helps to ensure the self-strength of the conveying shaft 1. At the same time, this setting can also ensure that the self-flow area of the conveying hole 15 is relatively large, which is convenient for the subsequent installation of the magnetic opening line.

[0033] This application also relates to a rotary clamping device. As Figures 4 to 6 shown, the rotary clamping device includes a mounting base 2, a swing cylinder 3, a rotary base 4, and a jaw 5. The mounting base 2 is a base, mainly playing the role of a structural foundation. The swing cylinder 3 is fixedly connected to the mounting base 2, for example, by screw mounting, to set the swing cylinder 3 on the mounting base 2. The rotary base 4 is fixedly connected to the swing table 31 of the swing cylinder 3. For example, by screw connection, the rotary base 4 can rotate under the drive of the swing table 31. The jaw 5 is fixedly connected to the rotary base 4. For example, by screw connection, it is used to move relative to the mounting base 2 under the drive of the swing table 31 following the rotary base 4. There are two jaws 5, and the axes of these two jaws 5 are perpendicular to each other. During operation, this rotary clamping device can be used for loading and unloading. For example, one of the jaws 5 grabs raw materials from the material storage area and moves to the processing area to be processed, and the other jaw 5 grabs and unloads the workpiece that has been processed in the previous process from the equipment. The jaw 5 rotates 180 degrees with the swing table 31, sends the raw materials to the same station of the equipment for loading and clamping, and performs subsequent processing, while completing the loading and unloading process. It should be noted that the structures and connection relationships of the mounting base 2, the swing cylinder 3, the rotary base 4, and the jaw 5 in the above rotary clamping device can be prior art, so the more detailed connection methods and structures will not be further elaborated.

[0034] According to the present application, mounting holes 21 are provided on the mounting base 2, the swing cylinder 3, and the rotary base 4. That is to say, mounting holes 21 are opened on the mounting base 2, the swing cylinder 3, and the rotary base 4. For example, the mounting hole 21 starts from the mounting base 2, passes through the gear shaft 32 and the swing table 31 of the swing cylinder 3, and then extends to the rotary base 4. The conveying shaft 1 is radially and clearance-mounted into the mounting hole 21. The vacuum hole 11 in the conveying shaft 1 serves as part of the vacuum air path, the opening and closing air hole 13 serves as part of the opening and closing air path, and the conveying hole 15 serves as the magnetic opening line conveying channel. It can be seen that the present application makes the vacuum air path, the opening and closing air path, and the magnetic opening line hidden inside the rotary clamping device, which can effectively prevent pipeline entanglement. In particular, different air paths and magnetic opening lines are all received into the conveying shaft 1, with high integration efficiency, which helps to make the structure of the rotary clamping device compact.

[0035] Structurally, a first limiting boss 22 is provided on the installation base 2. A second limiting boss 41 is provided on the rotating base 4. Axial ends of the conveying shaft 1 respectively abut against the first limiting boss 22 and the second limiting boss 41. It can be seen that the axial position of the conveying shaft 1 can be positioned by the first limiting boss 22 and the second limiting boss 41 to ensure installation. The conveying shaft 1 is placed in the installation hole 21 in an intermittent manner to ensure smooth installation, and a sealing ring 65 is provided. In addition, a set screw hole 26 communicating inside and outside is provided on the installation base 2. After the set screw 23 is screwed into the set screw hole 26, it presses against the conveying shaft 1 to prevent the conveying shaft 1 from rotating around its own axis and ensure the stability of the conveying shaft 1.

[0036] A vacuum communication hole 12 on the conveying shaft 1 communicates with the gap formed between the conveying shaft 1 and the installation base 2. And the gap formed between the conveying shaft 1 and the installation base 2 is communicated to the vacuum pipe nozzle 24 provided on the installation base 2 through a first vacuum pipe 61. A vacuum communication hole 12 on the conveying shaft 1 communicates with the gap formed between the conveying shaft 1 and the rotating base 4. The gap formed between the conveying shaft 1 and the rotating base 4 is communicated to the finger gap of the gripper 5 through a second vacuum pipe 62.

[0037] In addition, a vacuum communication hole 12 on the conveying shaft 1 communicates with the gap formed between the conveying shaft 1 and the gear shaft 32 of the swing cylinder 3. The gap formed between the conveying shaft 1 and the gear shaft 32 of the swing cylinder 3 is communicated to the space between the gear shaft 32 of the swing cylinder 3 and the main body 34 of the swing cylinder 3 through a third vacuum pipe 63.

[0038] It is easy to understand that axial ends of the vacuum holes 11 are blocked by steel balls 64. Specifically, steel balls 64 are provided between the first limiting boss 22 and the conveying shaft 1, and between the second limiting boss 41 and the conveying shaft 1.

[0039] Multiple sealing rings 65 are provided between the conveying shaft 1 and the hole wall of the installation hole 21 for ensuring sealing. It is easy to understand that the specific layout of the sealing rings 65 can ensure the sealing between the vacuum communication holes 12 and the opening and closing communication holes 14 to prevent air leakage.

[0040] Through the above layout, a vacuum air path is formed in the rotary clamping device. During operation, due to vacuum suction, external air is sucked in from the finger gap of the gripper 5, reaches the gap between the conveying shaft 1 and the rotating base 4 through the second vacuum pipe 62, then flows to a vacuum communication hole 12 (the vacuum communication hole 12 marked as 121) at this place, and then enters the vacuum hole 11 from this vacuum communication hole 12. Figure 7The extension direction of the arrow in the figure represents the direction of gas flow. At the same time, external air is inhaled from between the gear shaft 32 of the pendulum cylinder 3 and the main body 34 of the pendulum cylinder 3, reaches the gap between the conveying shaft 1 and the gear shaft 32 through the third vacuum tube 63, then flows to the corresponding vacuum communication hole 12 (the vacuum communication hole 12 marked as 122), and then enters the vacuum hole 11 from this vacuum communication hole 12. Figure 8 The extension direction of the arrow in the figure represents the direction of gas flow. The gas in the vacuum hole 11 then flows out from one of the vacuum communication holes 12 (the vacuum communication hole 12 marked as 123) to the gap between the conveying shaft 1 and the mounting base 2, and finally flows out through the first vacuum tube 61 from the vacuum pipe port 24. Figure 9 The extension direction of the arrow in the figure represents the direction of gas flow. It can be seen that by sucking in the flow rate from the vacuum pipe port 24, on the one hand, the dust particles generated by the wear between the camshaft 51 of the jaw 5 and the finger 52, and between the rod seal ring 53 and the camshaft 51, as well as the dust in the surrounding environment of the jaw can be sucked in; on the other hand, the dust particles generated by the wear of the bearing 35, gear shaft 32 and rack of the pendulum cylinder 3 and the dust in the surrounding environment of the pendulum cylinder 3 can also be sucked in, avoiding air pollution in the clean room.

[0041] In a specific embodiment, as Figure 3 shown in the figure, the second vacuum tube 62 includes multiple segments. The first segment 621 is arranged inside the rotating base 4 and is used to connect the second segment 622 and the gap formed between the conveying shaft 1 and the rotating base 4; the second segment 622 is arranged inside the rotating base 4 to guide the gas path towards the jaw 5; the third segment 623 extends inside the jaw 5 and is used to be close to the finger gap of the jaw 5; the fourth segment extends inside the jaw 5 and its opening is arranged between the finger gaps to efficiently suck in dust particles and the like. However, the structure of the second vacuum tube 62 of the present application is not limited to the above arrangement method. That is to say, as long as the second vacuum tube 62 can connect the finger gap of the jaw 5 and the gap formed between the conveying shaft 1 and the rotating base 4, it can fall within the protection scope of the present application. And the specific second vacuum tube 62 can be adjusted according to the actual situation. Similarly, after considering aspects such as processing convenience, low production cost, and not affecting the setting of other components, the arrangements of the first vacuum tube 61 and the third vacuum tube 63 can also be adjusted according to the actual situation.

[0042] The opening and closing air hole 13 of the present application, as part of the opening and closing air path, is used for pneumatically controlling the opening and closing of the clamping jaw 5. The opening and closing air path supplies air from the clamping jaw air pipe orifice 25 on the mounting base 2. The gas then enters the corresponding opening and closing communication hole 14 after passing through the gap between the conveying shaft 1 and the mounting base 2, and then enters the opening and closing air hole 13. Then, it enters the gap between the conveying shaft 1 and the rotating base 4 through the corresponding opening and closing communication hole 14 at the other end, and then passes through the rotating base 4, and finally reaches the air inlet at the bottom of the clamping jaw 5 to control the opening and closing of the clamping jaw 5. The above gives the specific flow direction of the opening and closing air path, and the layout of the specific pipeline of the opening and closing air path can be preset by those skilled in the art. In the present application, the opening and closing air path includes the opening and closing air hole 13, so that the opening and closing air path can be hidden inside the rotary clamping device to avoid pipeline entanglement.

[0043] In the present application, at least part of the vacuum air path and the opening and closing air path are hidden to prevent pipeline winding and ensure the stable operation of the rotary clamping device. In addition, the rotary clamping device integrates part of the vacuum air path, part of the opening and closing air path, and the conveying hole 15 onto the conveying shaft 1, which is convenient for processing and installation, making the rotary clamping device simple and compact in structure and high in working efficiency. In particular, the rotary clamping device is provided with a vacuum air path and can be applied to clean room occasions.

[0044] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and / or modifications falling within the scope of the present invention. All changes and / or modifications made according to the embodiments of the present invention should be covered within the protection scope of the present invention.

Claims

1. A conveying member for a rotating clamping device, characterized in that: The conveying shaft comprises a conveying shaft, on which a vacuum air hole penetrating along the axial direction of the conveying shaft is arranged, and on the outer wall of the conveying shaft is arranged a vacuum communication hole communicating with the vacuum air hole.

2. The conveying member for a rotating clamping device according to claim 1, characterized in that: The conveying shaft is provided with an opening and closing air hole extending axially therethrough, and the outer wall of the conveying shaft is provided with an opening and closing connecting hole connected to each of the opening and closing air holes, and the opening and closing air holes and the vacuum air holes are spaced apart in the circumferential direction of the conveying shaft.

3. The conveying member for a rotating clamping device according to claim 1 or 2, characterized in that: The conveying shaft is provided with a conveying hole which penetrates along the axial direction of the conveying shaft, and the conveying hole and the vacuum air hole are arranged in an interval manner.

4. A rotary clamping device, comprising a mounting base, a swing cylinder fixedly connected to the mounting base, a rotating base fixedly connected to the swing table of the swing cylinder, and a clamp fixedly connected to the rotating base, characterized in that: Mounting holes are provided on the mounting base, the swing cylinder and the rotating base, and the conveying member for the rotating clamping device according to any one of claims 1 to 3 is gap-embedded in the mounting hole, one of the vacuum connecting holes on the conveying shaft is connected to the gap formed between the conveying shaft and the mounting base, and the gap formed between the conveying shaft and the mounting base is connected to the vacuum piping port provided on the mounting base through a first vacuum tube, one of the vacuum connecting holes on the conveying shaft is connected to the gap formed between the conveying shaft and the rotating base, and the gap formed between the conveying shaft and the rotating base is connected to the finger gaps of the clamp through a second vacuum tube.

5. The rotary clamping device according to claim 4, characterized in that: One of the vacuum connecting holes on the conveying shaft is connected to the gap formed between the conveying shaft and the gear shaft of the swing cylinder, and the gap formed between the conveying shaft and the gear shaft of the swing cylinder is connected to the gear shaft of the swing cylinder and the main body of the swing cylinder through the third vacuum tube.

6. The rotary clamping device according to claim 4, characterized in that: A first limiting boss is arranged on the mounting base, and a second limiting boss is arranged on the rotating base. Both axial ends of the conveying shaft abut against the first limiting boss and the second limiting boss respectively.

7. The rotary clamping device according to claim 6, characterized in that: Steel balls for blocking the vacuum air holes are arranged between the first limiting boss and the conveying shaft, and between the second limiting boss and the conveying shaft.

8. The rotary clamping device according to any one of claims 4 to 7, characterized in that: A jackscrew hole is arranged on the installation base, and a jackscrew for tightening the conveying shaft is matched and arranged in the jackscrew hole.

9. The rotary clamping device according to any one of claims 4 to 7, characterized in that: A plurality of sealing rings are arranged between the conveying shaft and the hole wall of the mounting hole.

10. The rotary clamping device according to any one of claims 4 to 7, characterized in that: A clamping claw piping port is arranged on the mounting base, and the clamping claw piping port is communicated with an opening and closing air hole arranged on the conveying shaft.

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