Clamp

Abstract

The utility model discloses a clamp which comprises two clamping arms capable of moving relatively, namely a first clamping arm and a second clamping arm which are provided with a connecting part and a detecting part respectively. The suction cup is arranged on the connecting part and is arranged opposite to the detection part; the suction device is communicated with the suction cup through a pipeline, and when the distance between the first clamping arm and the second clamping arm is larger than or smaller than a set value, the suction device sucks air so that the suction cup can be attracted to the detection part; and the detection device is used for detecting the air pressure of the suction cup and judging whether the suction cup succeeds in being sucked with the detection part or not. According to the clamp, the suction cup is arranged on the connecting part, the suction cup is matched with the detection part, whether the suction cup and the detection part are successfully sucked or not can be judged only by detecting the air pressure of the suction cup, an alarm can be given when the suction cup and the detection part are not sucked, and compared with the prior art, the clamp has the advantages that the number of parts used by the clamp is small, the structure is simple, and assembling operation is more convenient.

Description

Technical Field

[0001] This application relates to the field of clamps, and in particular to a clamp. Background Technology

[0002] Existing clamps use relative movement of the jaws to grip the product, and then move the clamp to remove the product. However, in actual use, there are instances where the clamp fails to successfully grip / clamp the product, at which point the detection device issues an alarm as a reminder.

[0003] For example, document CN106239849A discloses a clamping device, including an air intake device, an air intake pipe connected to the air intake device, and at least two clamps. Each clamp includes a clamp body, two grippers mounted on the clamp body, and a drive device for controlling the movement of the two grippers. Each gripper is equipped with an adsorption device and an air pipe connector. The air pipe connector includes a first air intake port and a second air intake port. The first air intake port is connected to the adsorption device, and the second air intake port is connected to the air intake pipe. The adsorption devices on the two grippers are arranged opposite to each other. Although this clamping device can provide timely alarms, the presence of adsorption devices on both grippers results in a large number of components, requiring further improvement. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a clamp.

[0005] This application provides a clamp, including:

[0006] Two clamping arms that can move relative to each other are a first clamping arm and a second clamping arm, and a connecting part and a detection part are respectively provided on the first clamping arm and the second clamping arm;

[0007] A suction cup is disposed on the connecting part and is positioned relative to the detection part;

[0008] The suction device is connected to the suction cup via a pipeline. When the distance between the first clamping arm and the second clamping arm is greater than or less than a set value, air is drawn in so that the suction cup can be attracted to the detection part.

[0009] A detection device is used to detect the air pressure of the suction cup and determine whether the suction cup has successfully engaged with the detection unit.

[0010] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0011] Optionally, the two clamping arms define a plane, and the connecting portion and the detection portion protrude relative to the plane.

[0012] Optionally, the detection unit is closer to the first clamping arm than the second clamping arm.

[0013] Optionally, the connecting portion has a vertically arranged first portion and a horizontally arranged second portion, the first portion being arranged opposite to the detection portion.

[0014] Optionally, the first clamping arm is located to the right of the second clamping arm, and the first portion is located to the left of the detection unit.

[0015] Optionally, the detection unit is located above the second part.

[0016] Optionally, the connecting part is provided with the pipeline.

[0017] Optionally, the connecting part is provided with a vent connector that connects to the pipeline.

[0018] Optionally, a drive device is included, which includes a base and a cylinder, wherein the cylinder drives the two clamping arms to move toward or away from each other through a transmission component.

[0019] Optionally, the base has a track at its bottom, and correspondingly, the top of the clamping arm is provided with a sliding part that cooperates with the track.

[0020] The suction cup in this application's fixture is mounted on the connecting part and cooperates with the detection part. Only the air pressure of the suction cup needs to be detected to determine whether it has successfully engaged with the detection part. If it has not engaged, an alarm will be issued. Compared with the prior art, the fixture of this application uses fewer parts, has a simpler structure, and is easier to assemble and operate. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure in which the suction cup and the detection part are engaged in a fixture according to an embodiment of this application;

[0022] Figure 2 A schematic diagram of the structure of a fixture according to an embodiment provided in this application;

[0023] Figure 3 for Figure 1 Another structural diagram of the clamp;

[0024] Figure 4 A schematic diagram of the structure of a fixture in an embodiment provided in this application, in which the suction cup is not engaged with the detection unit;

[0025] Figure 5 This is a schematic diagram of the second clamping arm.

[0026] The annotations in the figure are explained as follows:

[0027] 100. First clamping arm; 110. Connecting part; 111. Pipeline; 112. Vent connector; 113. Positioning hole; 120. First part; 130. Second part;

[0028] 200. Second clamping arm; 210. Detection section; 220. Step;

[0029] 300. Suction cup; 310. Workpiece;

[0030] 400. Drive unit; 410. Base; 411. Track; 420. Cylinder; 421. Sliding part. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a system, product, or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0036] See Figures 1-4 One embodiment of this application provides a clamp, including two relatively movable clamping arms, a suction cup 300, a suction device, and a detection device (wherein the suction device and the detection device are not shown in the figure).

[0037] The two clamping arms are a first clamping arm 100 and a second clamping arm 200, respectively. A connecting part 110 and a detection part 210 are respectively provided on the first clamping arm 100 and the second clamping arm 200. A suction cup 300 is provided on the connecting part 110 and is positioned opposite the detection part 210. In order to facilitate the installation of the suction cup 300, a positioning hole 113 is provided on the connecting part 110, and the suction cup 300 is partially fixedly installed in the positioning hole 113.

[0038] The suction device is connected to the suction cup 300 via the pipe 111. When the distance between the first clamping arm 100 and the second clamping arm 200 is greater than or less than a set value, air is drawn in so that the suction cup 300 can be attracted to the detection unit 210. The detection device is used to detect the air pressure of the suction cup 300 and determine whether the suction cup 300 has been successfully attracted to the detection unit 210.

[0039] The suction cup 300 in this application's fixture is mounted on the connecting part 110 and cooperates with the detection part 210. In actual use, it is only necessary to detect the air pressure of the suction cup 300 to determine whether it has successfully engaged with the detection part 210. When the suction cup 300 disengages from the detection part 210 (i.e., the distance between the suction cup 300 and the detection part 210 is too large), the air pressure changes rapidly, and an alarm is issued to remind that the clamping has failed. Compared with the prior art, the fixture of this application uses fewer parts, has a simpler structure, and is easier to assemble and operate.

[0040] In this application, "left" and "right" are relative terms. Unless otherwise specified, "left" and "right" in the following context refer to all terms. Figure 1 In terms of the state of things.

[0041] like Figure 1 As shown, the two clamping arms define a plane, and the connecting part 110 and the detection part 210 are protruding relative to the plane. In this embodiment, preferably, the detection part 210 has a plate-like structure.

[0042] The detection section 210 has a plate-like structure, forming a step 220 between it and the second clamping arm 200.

[0043] See Figures 1-4 The connecting portion 110 has a vertically arranged first portion 120 and a horizontally arranged second portion 130, with the first portion 120 arranged opposite to the detection portion 210. In this embodiment, the first clamping arm 100 is located to the right of the second clamping arm 200, and the first portion 120 is located to the left of the detection portion 210.

[0044] To achieve a more compact structure, the detection unit 210 is positioned closer to the first clamping arm 100 relative to the second clamping arm 200. For example... Figure 5 As shown, a step 220 is formed between the detection unit 210 and the second clamping arm 200. The design of the step 220 can reduce the outward protrusion of the first part 120 relative to the second clamping arm 200. Furthermore, in this embodiment, the detection unit 210 is located above the second part 130.

[0045] like Figure 2 As shown, a pipe 111 is provided inside the connecting part 110, and the suction device is connected to the suction cup 300 through the pipe 111. Furthermore, in order to facilitate the connection of the suction device, a vent connector 112 for connecting the pipe 111 is provided on the connecting part 110 (i.e., the second part 130).

[0046] Of course, in order to enable the two clamping arms to move, the fixture of this application also includes a driving device 400, which can adopt existing technology, such as including a base 410 and a cylinder 420. The cylinder 420 drives the two clamping arms to move towards or away from each other through a transmission component (not shown in the figure). Preferably, when the two clamping arms move in the same direction or away from each other, their strokes are the same. In this embodiment, the stroke of the first clamping arm 100 / the second clamping arm 200 is 4.5 mm, and the total stroke of the two is 9 mm. Of course, the stroke of the clamping arms can be adaptively selected according to the actual external dimensions of the workpiece 310, and no special requirements are made in this application.

[0047] See Figure 3 The base 410 has a track 411 at its bottom, and correspondingly, the top of the clamping arm is provided with a sliding part 421 that cooperates with the track 411. The drive device 400 drives the clamping arm to slide within the track 411. When it is necessary to clamp the workpiece 310, the cylinder 420 drives the clamp to move in the opposite direction, and when it is necessary to release the workpiece 310, the cylinder 420 drives the clamping arm to move in the opposite direction.

[0048] like Figure 1 and Figure 4 As shown, when the fixture needs to clamp the workpiece 310, the second clamping arm 200 moves to the right and the first clamping arm 100 moves to the left. Since the first part 120 is located to the left of the detection unit 210, the increase in distance between the first part 120 and the detection unit 210 is the sum of the sliding distances of the first and second clamping arms. When the fixture fails to clamp the workpiece 310, the distance between the first part 120 and the detection unit 210 continuously increases. After reaching the threshold of the suction cup 300, the suction cup 300 disengages from the detection unit 210. At this time, the detection device detects a rapid change in air pressure and starts an alarm.

[0049] The clamp described above in this application clamps the workpiece when the two clamping arms move toward each other. Of course, the above components can also be adapted to clamp the workpiece when the two clamping arms move away from each other. The working principle is the same, and this application will not repeat it.

[0050] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0051] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A clamp characterized in that, The utility model relates to a kind of two-arm clamping device, comprising: Two oppositely movable clamping arms, respectively first clamping arm and second clamping arm, connection part and detection part are respectively arranged on the first clamping arm and the second clamping arm; Suction cup, the suction cup is arranged on the connection part, and it is relative to the detection part arrangement; Suction device, the suction cup is communicated by pipeline, when the interval of the first clamping arm and the second clamping arm is greater than or less than a set value, suction air makes the suction cup can be attracted with the detection part; Detection device, for detecting the air pressure of the suction cup, judge whether the suction cup is successfully attracted with the detection part.

2. The clamp of claim 1, wherein The two clamping arms define a plane, and the connection part and the detection part are arranged protruding relative to the plane.

3. The clamp of claim 2, wherein The detection part is closer to the first clamping arm relative to the second clamping arm.

4. The clamp of claim 3, wherein The connection part has a vertically arranged first part and a horizontally arranged second part, and the first part is arranged opposite to the detection part.

5. The clamp of claim 4, wherein The first clamping arm is located on the right side of the second clamping arm, and the first part is located on the left side of the detection part.

6. The clamp of claim 4, wherein The detection part is located above the second part.

7. The clamp of claim 1, wherein The connection part is provided with the pipeline.

8. The clamp of claim 7, wherein, The connection part is provided with a vent connector communicating with the pipeline.

9. The clamp of claim 1, wherein The utility model relates to a kind of two-arm clamping device, comprising:

10. The clamp of claim 9, wherein, The base has a track at the bottom, and correspondingly, the clamping arm top is provided with a sliding part matched with the track.

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