Suction device

Abstract

The utility model provides a suction device. The suction device comprises a fixed part, a driving device, a movable part, a suction assembly and a positioning assembly. The driving device is arranged on the fixing piece; the driving device drives the movable part to move, so that the movable part can approach or leave the fixed part; a through hole is formed in the movable part; the suction assembly is arranged on the fixed part, and one end of the suction assembly penetrates through the through hole of the movable part and is located below the movable part. The positioning assembly is arranged on the lower surface of the movable part, and the workpiece to be sucked is positioned through the positioning assembly.

Description

Technical Field

[0001] The present invention relates to a suction device, belonging to the technical field of automation equipment. Background Art

[0002] With the development of technology, more and more products are manufactured through automated production lines. In automated production lines, parts often need to be transferred between various workstations.

[0003] In the existing technology, devices such as suction cups are generally used to transfer parts. However, these mechanisms have the following problems: 1. The suction cups are soft, especially accordion-style suction cups, and the amount of suction cup compression varies. This causes the suction cup material picking gripper to have a certain amount of deflection during movement after picking up the material, resulting in poor picking and placing accuracy; 2. The position of the suction cup material picking gripper is difficult to adjust, and there is no reference to assist in adjusting the position; 3. In actual production, the position cannot be quickly sensed, which may cause scratches on the product and reduce the yield. Utility Model Content

[0004] In order to solve one of the above technical problems, the present disclosure provides a suction device.

[0005] According to one aspect of the present disclosure, there is provided a suction device comprising:

[0006] fixings;

[0007] a driving device, wherein the driving device is arranged on the fixing member;

[0008] A movable member, wherein the driving device drives the movable member to move so that the movable member can approach or move away from the fixed member; a through hole is formed in the movable member;

[0009] A suction component, the suction component is arranged on the fixed component, one end of the suction component passes through the through hole of the movable component and is located below the movable component;

[0010] A positioning component is provided on the lower surface of the movable part, and is used to position the workpiece to be sucked.

[0011] According to the suction device of at least one embodiment of the present disclosure, a guide hole is formed on the fixing member, and a guide column is installed on the movable member, and the guide column is slidably disposed in the guide hole.

[0012] According to the suction device of at least one embodiment of the present disclosure, a limiting device is provided at the upper end of the guide column, and the limiting device is used to limit the maximum movement distance of the guide column in the downward movement direction.

[0013] According to the suction device of at least one embodiment of the present disclosure, a linear bearing is provided in the guide hole, and the limiting device cooperates with the linear bearing to limit the maximum movement distance of the guide column in the downward movement direction.

[0014] According to the suction device of at least one embodiment of the present disclosure, the positioning assembly includes: a positioning boss, one end of which is arranged on the lower surface of the movable part, and the other end of the positioning boss has a preset distance from the lower surface of the movable part.

[0015] According to the suction device of at least one embodiment of the present disclosure, four positioning bosses are provided, and the four positioning bosses are respectively located at corners of the workpiece to be sucked.

[0016] According to the suction device of at least one embodiment of the present disclosure, the positioning assembly includes:

[0017] The floating positioning member is configured to float relative to the movable member, and the floating positioning member cooperates with the positioning hole on the workpiece to be sucked to achieve positioning of the workpiece.

[0018] According to the suction device of at least one embodiment of the present disclosure, two floating positioning members are provided.

[0019] According to the suction device of at least one embodiment of the present disclosure, four suction assemblies are provided.

[0020] According to the suction device of at least one embodiment of the present disclosure, the driving device is a cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0022] Figure 1 It is a structural schematic diagram of a suction device according to one embodiment of the present disclosure.

[0023] Figure 2 It is a structural schematic diagram of a suction device according to an embodiment of the present disclosure from another angle.

[0024] Figure 3 Schematic diagram of a suction device in use according to one embodiment of the present disclosure.

[0025] The specific reference numerals in the figure are:

[0026] 100 suction device

[0027] 110 fixings

[0028] 120 drive device

[0029] 130 moving parts

[0030] 140 suction components

[0031] 141 connector

[0032] 142 suction cup

[0033] 151 positioning boss

[0034] 152 floating positioning parts

[0035] 160 guide column

[0036] 170 limit device. DETAILED DESCRIPTION

[0037] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0040] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0041] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0042] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0043] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0044] Figure 1 2 is a schematic structural diagram of a suction device 100 according to one embodiment of the present disclosure. Figure 2 2 is a schematic structural diagram of the suction device 100 from another angle according to an embodiment of the present disclosure. Figure 3 Schematic diagram of the suction device 100 in use according to one embodiment of the present disclosure.

[0045] like Figures 1 to 3 As shown, the suction device 100 of the present disclosure may include: a fixing member 110, a driving device 120, a movable member 130, a suction assembly 140 and a positioning assembly.

[0046] In actual use, the fixing part 110 of the present invention can be fixed to the end of a robotic arm or other parts, so that the suction device 100 of the present invention can be moved to the suction position by the robotic arm. After the suction device 100 sucks the workpiece to be sucked at the suction position, the suction device 100 of the present invention can be moved to the release position by the robotic arm, and then the sucked workpiece can be released.

[0047] The driving device 120 is disposed on the fixed member 110, wherein the driving device 120 is used to drive the movable member 130 to move so that the movable member 130 can approach or move away from the fixed member 110. Specifically, the movable member 130 of the present disclosure is located below the fixed member 110. When the movable member 130 moves upward, it can approach the fixed member 110. Correspondingly, when the movable member 130 moves downward, it moves away from the fixed member 110.

[0048] In the present disclosure, a guide hole is formed on the fixing member 110 , and a guide post 160 is installed on the movable member 130 . The guide post 160 is slidably disposed in the guide hole.

[0049] like Figure 1 As shown, the fixing member 110 of the present disclosure is provided with four guide holes, which are respectively located at the four corners of the fixing member 110. Accordingly, the number of the guide posts 160 is also set to four, which are respectively provided in one-to-one correspondence with the guide holes.

[0050] Moreover, a limiting device 170 is provided at the upper end of the guide post 160, and the limiting device 170 is used to limit the maximum moving distance of the guide post 160 in the downward moving direction. In other words, by the setting of the limiting device 170, the guide post 160 will not disengage from the guide hole.

[0051] In the present disclosure, a linear bearing is provided in the guide hole, and the guide column 160 can be slidably provided in the linear bearing. The limiting device 170 cooperates with the linear bearing, that is, the limiting device 170 can stop on the linear bearing to limit the maximum movement distance of the guide column 160 in the downward movement direction.

[0052] In one embodiment, a center hole is opened on the fixing member 110, and the driving device 120 can be a cylinder. At this time, the cylinder body of the cylinder is fixed to the upper surface of the fixing member 110, and the piston rod of the cylinder passes through the center hole of the fixing member 110 and is fixedly connected to the movable member 130.

[0053] The movable member 130 is provided with a through hole; the through hole is used for the suction assembly 140 to pass through. Specifically, the number of the through holes can be the same as the number of the suction assembly 140. In a preferred embodiment, Figure 2 As shown, the number of the through holes is 8, and accordingly, the number of the suction components 140 is also 8.

[0054] At the same time, since the suction device 100 of the present disclosure can suck two workpieces at a time, accordingly, when the suction device 100 can only suck one workpiece, the number of through holes of the movable part 130 is four, and accordingly, the number of suction assemblies 140 is also set to four.

[0055] The suction assembly 140 is arranged on the fixed part 110, one end of which passes through the through hole of the movable part 130 and is located below the movable part 130; in a specific embodiment, the suction assembly includes a joint 141 and a suction cup 142, wherein the joint 141 is fixed to the fixed part 110, for example, a threaded hole is provided on the fixed part 110, and the outer surface of the joint 141 is provided with an external thread, so that the joint 141 is fixed in the threaded hole of the fixed part 110 by a threaded connection.

[0056] The connector 141 is connected to one end of the bellows, and the suction cup 142 is connected to the other end of the bellows. Thus, when the suction cup 142 contacts and absorbs the workpiece to be absorbed, the length of the bellows will become shorter due to the negative pressure in the bellows, thereby applying a pulling force to the workpiece through the suction cup 142. This pulling force will cause the workpiece to be tightly attached to the movable part 130 through the positioning assembly described below.

[0057] The positioning assembly is disposed on the lower surface of the movable member 130 , and the workpiece to be sucked is positioned by the positioning assembly.

[0058] In a specific embodiment, the positioning assembly includes: a positioning boss 151, one end of the positioning boss 151 is arranged on the lower surface of the movable part 130, and the other end of the positioning boss 151 has a preset distance from the lower surface of the movable part 130, so that when the suction cup 142 sucks the workpiece, the workpiece can rest on the positioning boss 151, so that the position of the workpiece in the height direction (Z direction) is accurately defined.

[0059] In a preferred embodiment, four positioning bosses 151 are provided, each located at a corner of the workpiece to be sucked. In other words, for sucking one workpiece, four positioning bosses 151 are provided. If the suction device 100 is capable of sucking two workpieces simultaneously, eight positioning bosses 151 may be provided.

[0060] In addition, the positioning assembly includes a floating positioning member 152, which is configured to float relative to the movable member 130 and cooperates with a positioning hole on the workpiece to be sucked to achieve positioning of the workpiece. In a preferred embodiment, the floating positioning member 152 can be a floating positioning pin, which can adopt a structure known in the art and will not be described in detail in this disclosure.

[0061] In a preferred embodiment, two floating positioning members 152 are provided. The positions of the two floating positioning members 152 can be set according to the positions of the positioning holes on the workpiece, thereby positioning the workpiece in the X and Y directions through the provision of the two floating positioning members 152.

[0062] In the prior art, after the workpiece is transferred to the carrier, a secondary positioning mechanism cannot be added due to the small space in the carrier and the need for the carrier to circulate. The suction device disclosed in the present invention uses two positioning pin holes with a diameter of 1.6 mm on the workpiece to position the workpiece, thereby improving the positioning efficiency during the workpiece transfer process.

[0063] When the suction device of the present disclosure is in use, the drive mechanism 120 operates to drive the movable member 130 downward toward the workpiece. Before the suction cup 142 contacts the product, the floating positioning member 152 is inserted into the positioning hole of the workpiece, thereby positioning the workpiece and correcting its X and Y positions. Furthermore, because the floating positioning member 152 has a certain amount of vertical movement, it will not damage the workpiece even if the movable member 130 continues to move downward.

[0064] Then, as the movable member 130 continues to move downward, the positioning boss 151 can contact the workpiece to be sucked before suction, positioning the workpiece, and then the suction assembly 140 can suck it. On the other hand, before suction, the positioning boss 151 can also not contact the workpiece, and through the suction assembly 140 sucking the workpiece, the workpiece can be moved in the Z-axis direction. At this time, the workpiece will also be closely attached to the positioning boss 151. Therefore, the provision of the positioning boss 151 can ensure the position of the workpiece on the Z-axis. Moreover, the use of multiple positioning bosses 151 can ensure that the workpiece has a flat posture during transfer, and will not cause lateral deviation due to different suction cup compression amounts.

[0065] Moreover, when debugging the material picking point, align the floating positioning member 152 with the calibration device (the material picking positioning pin of the product) on the material picking platform, and then control the drive device 120 to move until the suction cup picks up the product and the positioning boss also contacts the product, thereby completing the debugging of the material picking point.

[0066] When debugging the discharge point, align the floating positioning pin with the calibration device on the discharge platform (the product's discharge positioning pin), then control the drive device 120 to move and press the product into the positioning pin on the discharge platform, and the discharge point is debugged.

[0067] During use, if the material pickup or discharge point is offset, the relative position of the floating locating member 152 and the material pickup positioning pin or the material discharge positioning pin can be adjusted to correct the offset. Thus, when the suction device of the present disclosure is in use, the floating locating pin can provide a certain position correction function for the product, ensuring stable operation of the suction device of the present disclosure. Furthermore, the suction device of the present disclosure is very convenient when debugging points, and can be checked using the floating locating member 152 as a reference, greatly reducing debugging time and improving production efficiency.

[0068] The suction cup gripper in the prior art has a relatively soft suction cup and different compression levels, which results in a certain amount of yaw during the gripper's movement after picking up the material, leading to poor pick-up and place accuracy. The suction device disclosed herein uses floating positioning elements to limit the product's X and Y positions, while positioning bosses 151 limit the product's Z position. This allows the suction device disclosed herein to achieve high pick-up and place accuracy and strong stability.

[0069] Furthermore, the existing suction cup gripper lacks a visual reference, resulting in a long time to adjust the position, poor position accuracy, and difficulty visually identifying any position deviations. The suction device disclosed herein can use a floating positioning element as a reference, significantly reducing the time required to adjust the position, and allowing for intuitive visualization of any position deviations, thereby improving production efficiency.

[0070] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0072] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A suction device, characterized in that: include: Fixings; A driving device, wherein the driving device is arranged on the fixing member; A movable part, wherein the driving device drives the movable part to move so that the movable part can approach or move away from the fixed part; a through hole is formed on the movable part; A suction component, wherein the suction component is arranged on the fixed component, one end of the suction component passes through the through hole of the movable component and is located below the movable component; A positioning component is arranged on the lower surface of the movable part, and the workpiece to be sucked is positioned by the positioning component.

2. The suction device according to claim 1, characterized in that: A guide hole is provided on the fixing member, a guide column is installed on the movable member, and the guide column can be slidably arranged in the guide hole.

3. The suction device according to claim 2, characterized in that: A limiting device is provided at the upper end of the guide column, and the limiting device is used to limit the maximum moving distance of the guide column in the downward moving direction.

4. The suction device according to claim 3, characterized in that: A linear bearing is arranged in the guide hole, and the limiting device cooperates with the linear bearing to limit the maximum moving distance of the guide column in the downward moving direction.

5. The suction device according to claim 1, characterized in that: The positioning assembly comprises: a positioning boss, one end of which is arranged on the lower surface of the movable member, and the other end of which is at a preset distance from the lower surface of the movable member.

6. The suction device according to claim 5, characterized in that: The number of the positioning bosses is four, and the four positioning bosses are respectively located at the corners of the workpiece to be sucked.

7. The suction device according to claim 1, characterized in that: The positioning component comprises: The floating positioning member is configured to float relative to the movable member, and the floating positioning member cooperates with the positioning hole on the workpiece to be sucked to achieve the positioning of the workpiece.

8. The suction device according to claim 7, characterized in that: The number of the floating positioning members is two.

9. The suction device according to claim 1, characterized in that: The number of the suction components is four.

10. The suction device according to claim 1, characterized in that: The driving device is a cylinder.

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