Sucker tool

Abstract

The utility model provides a suction cup tool. The suction cup tool comprises an installation disc, a plurality of suction cups and a plurality of elastic connecting pieces. A plurality of mounting holes are formed in the mounting disc; the sucker is provided with a through hole and comprises a base and a suction nozzle; the suction nozzle penetrates through the mounting hole, one end of the through hole is configured to be connected with vacuum equipment, and the other end of the through hole is configured to suck a to-be-sucked workpiece; and each base is connected with the mounting disc through at least one elastic connecting piece. According to the sucker tool, the positions of the suckers can be designed according to a production line of workpieces to be sucked, meanwhile, each sucker has larger freedom degree when sucking the workpieces through the elastic connecting piece, when the elastic connecting piece is close to the position of the workpieces at the suckers, the manipulator can press the base to compress the elastic connecting piece, and therefore the workpieces can be sucked. The effect of complete contact between the suction nozzle and the to-be-sucked workpiece is achieved; in addition, chamfers of the through holes of the suction cup are reduced, the to-be-sucked workpiece can be completely guided into the suction nozzle through the chamfers under the condition that the to-be-sucked workpiece and the suction cup deviate, and the higher error-tolerant rate is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment manufacturing, and more specifically, to a suction cup tooling. Background Technology

[0002] With the development of injection molding technology, it has been widely applied in various industries, especially the automotive industry, which involves numerous components. More and more parts are using injection molding technology, and the methods for demolding and gripping injection-molded products are constantly evolving. Failure to demold and grip the product properly can lead to injection interruptions, affecting production efficiency and causing waste. Therefore, to reduce interruptions, it is necessary to improve the stability and reliability of product gripping.

[0003] Traditional suction cup structures require the suction cup fixture to be completely flush with the closed surface of the product, and the product needs to be guided into the suction cup fixture at a straight angle to create a vacuum for product suction. This method can lead to errors caused by displacement of the suction cup position and the existence of fitting gaps during the production process, resulting in the product not being able to be sucked out properly. It can also easily cause damage to the product and fixture, require frequent machine downtime, and necessitate the manufacture of new tooling parts, which seriously affects the utilization rate of the equipment, causes product scrapping, affects product delivery, and results in resource waste.

[0004] Optimizing the structure of suction cup fixtures to improve the success rate of suction cups in picking up finished products, avoiding situations where air leakage due to insufficient fitting diameter or tilted angle prevents the establishment of a vacuum and thus prevents the products from being picked up normally, improving equipment utilization, and reducing downtime and scrap has always been a research direction in this field.

[0005] It should be noted that the information disclosed in the background section above is only configured to enhance the understanding of the background of this utility model, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To address the problems in the existing technology, the purpose of this utility model is to provide a suction cup fixture. The suction cup fixture uses elastic connectors to allow each suction cup to have greater freedom when picking up a workpiece. Even if there is a misalignment between the workpiece to be picked up and the suction cup, it can be completely guided into the suction nozzle by beveling, thus having a higher fault tolerance rate.

[0007] This utility model provides a suction cup fixture, including an installation plate, multiple suction cups, and multiple elastic connectors;

[0008] The mounting plate is provided with multiple mounting holes;

[0009] The suction cup is provided with a through hole and includes a base and a suction nozzle connected to the base;

[0010] The suction nozzle passes through the mounting hole, and one end of the through hole on the base side is configured to connect to a vacuum device, while the other end is configured to suck up the workpiece to be sucked up.

[0011] Each of the suction cups is connected to the mounting plate via at least one of the resilient connectors.

[0012] According to some examples of this utility model, the elastic connector is a spring;

[0013] Each of the suction cups is connected to the mounting plate via a plurality of the springs;

[0014] The two ends of the spring are respectively connected to the end face of the base where the suction nozzle is located and the end face of the mounting plate facing the base.

[0015] According to some examples of this utility model, the suction cup fixture also includes multiple limiting pins;

[0016] Each of the aforementioned limiting pins is sequentially inserted into the base and the spring;

[0017] When the spring is compressed, the top of the limiting pin abuts against the mounting plate.

[0018] According to some examples of this utility model, a plurality of the springs are evenly arranged circumferentially on the suction nozzle.

[0019] According to some examples of this utility model, the inner diameter of the end of the suction nozzle opposite to the base is chamfered.

[0020] According to some examples of this utility model, the side length of the chamfer is L, and the wall thickness of the end of the suction nozzle away from the base is D, satisfying that L / D is between 1 / 5 and 1 / 3.

[0021] According to some examples of this utility model, the chamfer angle is 30° to 35°.

[0022] According to some examples of this utility model, the suction cup fixture includes four suction cups;

[0023] The mounting plate has four mounting holes, and the four mounting holes are on a circle.

[0024] According to some examples of this utility model, the mounting plate is square or I-shaped, and the four mounting holes are respectively disposed at the four corners of the square or I-shaped mounting plate.

[0025] According to some examples of this utility model, the base and the mounting plate are connected by bolts.

[0026] According to some examples of this utility model, the base and the suction nozzle are an integral part.

[0027] The suction cup fixture of this utility model has multiple suction cups whose positions can be designed according to the production line of the workpiece to be picked up. At the same time, the elastic connector allows each suction cup to have greater freedom when picking up the workpiece. When the elastic connector moves closer to the workpiece, the robot can press the base to compress the elastic connector, so as to achieve the effect of complete contact between the suction cup nozzle and the workpiece to be picked up. In addition, the chamfer of the suction cup through hole is reduced, so even if the workpiece to be picked up is offset from the suction cup, it can still be completely guided into the nozzle by the chamfer, which has a higher fault tolerance. Attached Figure Description

[0028] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0029] Figure 1 and Figure 2 These are schematic diagrams of the suction cup fixture from different perspectives, representing an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of a suction cup in a suction cup fixture according to an embodiment of the present invention;

[0031] Figure 4 This is an enlarged schematic diagram of the suction cup portion of a suction cup fixture according to an embodiment of the present invention; and

[0032] Figure 5 This is a cross-sectional view of the suction cup of a suction cup fixture according to an embodiment of the present invention.

[0033] Figure Labels

[0034] 1 installation disk

[0035] 11 mounting holes

[0036] 2 suction cups

[0037] 21 Base

[0038] 211 Bolt hole

[0039] 212 Internal Thread

[0040] 22 suction nozzle

[0041] 3. Flexible connectors

[0042] 4 Limit pins

[0043] H through hole Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0045] In the description of this utility model, it should be understood that 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 technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and settings are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0048] The structure of the suction cup fixture of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments are not intended to limit the scope of protection of this utility model.

[0049] Figure 1 and Figure 2These are schematic diagrams of the suction cup fixture from different perspectives, representing an embodiment of the present invention. Specifically, the suction cup fixture provided by the present invention includes a mounting plate 1, multiple suction cups 2, and multiple elastic connectors 3. The mounting plate 1 is provided with multiple mounting holes 11, and the suction cups 2 are provided with through holes H. Each suction cup 2 includes a base 21 and a suction nozzle 22 connected to the base 21. Figure 3 The through hole H passes through the suction nozzle 22 and the base 21. One end of the through hole H on the side of the base 21 is used to connect to an external vacuum device, and the other end is used to pick up the workpiece to be picked up.

[0050] A suction nozzle 22 is inserted into a mounting hole 11. Figure 2 Only one mounting hole 11 of the mounting plate 1 is shown, with a suction cup 2 provided. Each suction cup 2 is connected to the mounting plate 1 via at least one elastic connector 3, whereby its base 21 is connected. In actual use, the number of suction nozzles 22 is roughly equivalent to the number of mounting holes 11, and the number and position of the suction nozzles can be designed according to the structure of the production line for suctioning the workpiece. Figure 1 In one embodiment, the suction cup fixture may include four suction cups 2; correspondingly, the mounting plate 1 is provided with four mounting holes 11. The mounting plate 1 may be square or I-shaped, and the four mounting holes 11 are respectively provided at the four corners of the square or I-shaped mounting plate. The four mounting holes 11 may be on a circumference.

[0051] exist Figure 1 In this embodiment, the elastic connectors are springs, and each suction cup 2 is connected to the mounting plate 1 via four springs. The two ends of the springs are connected to the end face of the base 21 where the suction nozzle 22 is located and the end face of the mounting plate 1 facing the base 21, respectively. When each suction cup 2 is connected to the mounting plate 1 via multiple elastic connectors 3, the multiple elastic connectors (springs) 3 can be evenly distributed on the base 21 around the suction nozzle 22. When the suction cup fixture of this invention picks up the workpiece to be picked up, the end of the suction nozzle 22 facing away from the base 21 approaches and abuts against the workpiece. An external vacuum device is activated, reducing the air pressure in the through-hole H, thereby adsorbing the workpiece. Since the connection between the base 21 and the mounting plate 1 is through multiple elastic connectors 3, when picking up the workpiece, a robotic arm can press the base to compress the elastic connectors, achieving complete contact between the suction nozzle and the workpiece. Even when there is a misalignment between the suction cup fixture and the workpiece, the picking action can still be completed, reducing the frequency of interruptions and abnormal handling, and improving operational efficiency.

[0052] The elastic connector of this utility model may bend laterally and become unstable. Furthermore, the suction cup fixture may also include multiple limiting pins 4; each limiting pin 4 is sequentially inserted into the base 21 and the elastic connector (spring) 3. For example, the limiting pin 4 can be a bolt structure, including a pin cap and a pin rod. The pin rod can pass through the bolt hole 211 of the base 21 and the center of the spring, and the limiting pin is fixed by bolting to the bolt hole. Simultaneously, the length of the pin rod controls the travel distance of the base 21 or the suction nozzle connected to the base when the base 21 of the suction cup 2 is pressed. When the spring is compressed, the top of the pin rod of the limiting pin 4 abuts against the mounting plate 1. Figure 4 The limiting pin restricts the lateral displacement of the base and mounting plate by the elastic connector, allowing the suction nozzle to move in a direction perpendicular to the mounting plate (approaching or away from it). In other words, when a limiting pin is installed in the spring, it provides support and positioning for each coil of the spring. Simultaneously, the limiting pin limits the maximum compression of the spring, preventing damage or loss of elastic recovery due to over-compression. The limiting pin ensures that the spring always operates within its designed elastic range.

[0053] Figure 5 This is a cross-sectional view of the suction cup of a suction cup fixture according to an embodiment of the present invention. The inner diameter of the end of the suction nozzle 22 facing away from the base 21 can be chamfered with a β. The side length of the chamfer is L, and the wall thickness of the end of the suction nozzle 22 facing away from the base 21 is D, satisfying that L / D is between 1 / 5 and 1 / 3. The angle of the chamfer β is 30° to 35°. Simultaneously, the inner diameter of the suction nozzle 22 can be appropriately increased and the chamfer decreased according to the size of the workpiece to be suctioned. In this case, the suction success rate is better when the positional error between the workpiece and the suction nozzle is small, reducing the probability of suction failure due to workpiece tilting or poor fit with the suction nozzle, and improving the reliability of suction.

[0054] In some embodiments, the base 21 and the suction nozzle 22 can be a single piece. An internal thread 212 can be provided at the inner diameter of the through hole H in the base 21, see... Figure 5 This facilitates connection with external vacuum equipment.

[0055] In summary, to address the existing technical problems, this utility model provides a suction cup fixture. The multiple suction cups of the fixture can be positioned according to the production line design of the workpiece to be picked up. At the same time, the elastic connector allows each suction cup to have greater freedom when picking up the workpiece. When the elastic connector moves closer to the workpiece, the robot can press the base to compress the elastic connector, achieving the effect of complete contact between the suction cup nozzle and the workpiece to be picked up. In addition, by reducing the chamfer of the suction cup through hole, even if there is a misalignment between the workpiece to be picked up and the suction cup, the chamfer can still completely guide it into the nozzle, resulting in a higher fault tolerance rate.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0057] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A suction cup fixture, characterized in that, Includes an installation plate, multiple suction cups, and multiple flexible connectors; The mounting plate is provided with multiple mounting holes; The suction cup is provided with a through hole and includes a base and a suction nozzle connected to the base; The suction nozzle passes through the mounting hole, and one end of the through hole on the base side is configured to connect to a vacuum device, while the other end is configured to suck up the workpiece to be sucked up. Each of the suction cups is connected to the mounting plate via at least one of the resilient connectors.

2. The suction cup fixture according to claim 1, characterized in that, The elastic connector is a spring; Each of the suction cups is connected to the mounting plate via a plurality of the springs; The two ends of the spring are respectively connected to the end face of the base where the suction nozzle is located and the end face of the mounting plate facing the base.

3. The suction cup fixture according to claim 2, characterized in that, The suction cup fixture also includes multiple limiting pins; Each of the aforementioned limiting pins is sequentially inserted into the base and the spring; When the spring is compressed, the top of the limiting pin abuts against the mounting plate.

4. The suction cup fixture according to claim 2, characterized in that, The multiple springs are evenly arranged around the circumference of the suction nozzle.

5. The suction cup fixture according to claim 1, characterized in that, The inner diameter of the end of the suction nozzle opposite to the base is chamfered.

6. The suction cup fixture according to claim 5, characterized in that, The chamfer has a side length of L, and the suction nozzle has a wall thickness of D at the end opposite to the base, satisfying that L / D is between 1 / 5 and 1 / 3.

7. The suction cup fixture according to claim 5, characterized in that, The chamfer angle is 30° to 35°.

8. The suction cup fixture according to claim 1, characterized in that, The suction cup fixture includes four suction cups; The mounting plate has four mounting holes, and the four mounting holes are on a circle.

9. The suction cup fixture according to claim 8, characterized in that, The mounting plate is square or I-shaped, and the four mounting holes are respectively located at the four corners of the square or I-shaped mounting plate.

10. The suction cup fixture according to claim 1, characterized in that, The base and the nozzle are integrated into one piece.

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