Membrane wire cutting flexible clamp

Abstract

A flexible clamp for membrane wire cutting is characterized by comprising a base, a lower clamping plate, a connecting plate, an upper clamping plate, a driving mechanism, a pressure sensor and a controller, the lower clamping plate is arranged on the base, and the upper end face of the lower clamping plate is provided with a material groove for membrane wires to be arranged; the upper clamping plate is arranged on the connecting plate and can ascend and descend along with the connecting plate, the upper clamping plate is arranged right opposite to the lower clamping plate and is located above the lower clamping plate, a first water bag or a first air bag corresponding to the material groove is arranged below the upper clamping plate, and the first water bag or the first air bag can clamp the membrane filaments in the material groove of the upper clamping plate in a downward moving state; the pressure sensor is arranged on the upper clamping plate and used for detecting the pressure of the first water bag or the first air bag. A flexible clamping mode is adopted, the air bag or the water bag enables the periphery of the membrane tow to be stressed consistently, the membrane tow is not damaged, and the product quality is guaranteed; a feedback regulation mode is adopted, a pressure sensor is used for detecting pressure for control, and the performance is reliable.

Description

Technical Field

[0001] The utility model relates to a clamp, in particular to a clamp used for cutting hollow fiber membranes. Background Art

[0002] Hollow fiber membranes are fibrous in appearance, self-supporting membranes with selective permeability characteristics. They can be used for the separation and purification of substances and are widely used in sewage purification, pharmaceutical purification and other fields. The cross-section of the prepared fiber membrane bundle is uneven and cannot be used directly. It usually needs to be cut and trimmed. The existing cutting methods are mostly manual cutting with scissors or other cutting tools. Due to the lack of accurate positioning, the cross-section of the membrane wire is uneven and inefficient. Commonly used clamps are mostly rigid clamps. If the clamping force is too large, the membrane wires are in a squeezed state, which is easy to damage the membrane wire bundle. After cutting, it is easy to present an umbrella-shaped cross-section; if the clamping force is too small, effective clamping cannot be achieved. The membrane wire has a certain toughness. After the cutter contacts the membrane wire, the membrane wire bundle will deform, resulting in an inclined cut, which affects its use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a flexible clamp for cutting membrane wires which can be flexibly clamped to avoid loss of membrane wire bundles in view of the above-mentioned technical status quo.

[0004] The utility model solves the above technical problems by adopting the following technical solution: a flexible clamp for cutting film wires, characterized in that it includes

[0005] Base;

[0006] The lower clamping plate is arranged on the aforementioned base, and the upper end surface thereof has a material groove for setting the membrane wire;

[0007] A connecting plate, which is movably mounted on the aforementioned base;

[0008] An upper clamping plate is arranged on the aforementioned connecting plate and can be raised and lowered with the connecting plate. The upper clamping plate is arranged opposite to the lower clamping plate and is located above the lower clamping plate. A first water bag or a first air bag corresponding to the aforementioned material trough is arranged below the upper clamping plate. In the downward state, the first water bag or the first air bag can clamp the membrane wire in the material trough of the upper clamping plate;

[0009] A driving mechanism, which is arranged on the aforementioned base and can drive the aforementioned lower clamping plate to rise and fall;

[0010] A pressure sensor, disposed on the upper clamping plate, for detecting the pressure of the first water bag or the first air bag; and

[0011] The controller has an instruction output terminal connected to the aforementioned driving mechanism, and a signal input terminal connected to the aforementioned pressure sensor.

[0012] Furthermore, a second water bag or a second air bag is provided in the material trough of the lower clamping plate.

[0013] The first water bag or the first air bag is in a semicircular arc shape, and correspondingly, the second water bag or the second air bag is also in a semicircular arc shape.

[0014] Preferably, there are two driving mechanisms, which are respectively located on both sides of the connecting plate. The driving mechanism is a cylinder invertedly arranged on the base, and the piston rod at the top of the cylinder is connected to the connecting plate. Of course, the driving mechanism can also be driven by a motor, in conjunction with a crank slider, or by a screw nut.

[0015] Furthermore, a guide rail is longitudinally arranged on the base, and correspondingly, a slider which slidably cooperates with the guide rail is provided on the connecting plate.

[0016] Preferably, the guide rails are two and are respectively located at both sides of the connecting plate. Correspondingly, the sliders are also two and are respectively located at both ends of the connecting plate.

[0017] Compared with the prior art, the utility model has the following advantages: during the downward pressure process, the airbag or water bag squeezes the membrane bundle, the pressure received by the airbag or water bag increases, the pressure sensor detects the pressure rise, and sends a signal to the controller when the pressure value reaches the set value. The controller controls the cylinder to stop moving, and realizes the flexible clamping of the membrane bundle. The clamp adopts a flexible clamping method, and the airbag or water bag makes the periphery of the membrane bundle bear uniform force, does not damage the membrane bundle, and ensures product quality; it adopts a feedback adjustment method, uses a pressure sensor to detect pressure for control, and has reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment.

[0019] Figure 2 This is a control principle diagram of an embodiment.

[0020] Figure 3 Schematic diagram of the working state of the embodiment. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, the membrane wire cutting flexible clamp in this embodiment includes a base 1, a lower clamping plate 2, a connecting plate 4, an upper clamping plate 3, a driving mechanism 6, a pressure sensor 7 and a controller 100.

[0023] The lower clamping plate 2 is arranged on the base 1, and the upper end surface has a material groove for setting the film filaments, and a second airbag 21 is arranged in the material groove of the lower clamping plate 2. The connecting plate 4 is arranged on the base 1 so as to be able to rise and fall; the upper clamping plate 3 is arranged on the connecting plate 4 and can rise and fall with the connecting plate 4, and the upper clamping plate 3 is arranged opposite to the lower clamping plate 2 and is located above the lower clamping plate 2. The lower part of the upper clamping plate 3 is provided with a first airbag 31 corresponding to the second airbag. In the downward state, the first airbag 31 and the second airbag can clamp the film filaments;

[0024] The driving mechanism 6 is arranged on the base 1 and can drive the lower clamping plate 2 to rise and fall; there are two driving mechanisms 6 in this embodiment, which are respectively located on both sides of the connecting plate 4. Specifically, the driving mechanism 6 is an inverted cylinder arranged on the base 1, and the piston rod at the top of the cylinder is connected to the connecting plate 4.

[0025] The pressure sensor 7 is disposed on the upper clamping plate 3 to detect the pressure of the first airbag 31 ; the command output end of the controller 100 is connected to the driving mechanism 6 , and the signal input end is connected to the pressure sensor 7 .

[0026] In this embodiment, the first airbag 31 and the second airbag 21 are both in a semicircular arc shape.

[0027] Further, the base 1 is longitudinally provided with a guide rail 5, and correspondingly, the connecting plate 4 is provided with a slider 41 that slidably cooperates with the guide rail 5. There are two guide rails 5, respectively located at both sides of the connecting plate 4, and correspondingly, there are also two sliders 41, respectively located at both ends of the connecting plate 4.

[0028] like Figure 3 As shown, the membrane bundle is placed in the material tank, and the cylinder drives the upper clamping plate to descend, slowly pressing the membrane bundle. During the downward pressing process, the first airbag and the second airbag squeeze the membrane bundle, and the pressure received by the first airbag increases. The pressure sensor detects the pressure increase, and sends a signal to the controller when the pressure value reaches the set value. The controller controls the cylinder to stop moving, and realizes the flexible clamping of the membrane bundle. In this embodiment, the water bag can be used as a similar replacement for the air bag.

[0029] The airbag is used to achieve flexible clamping of the membrane bundle without damaging the membrane bundle; the feedback adjustment method is adopted, with high control accuracy and good safety; the cylinder drives the clamping plate to clamp and position, with high positioning accuracy and easy control.

Claims

1. A flexible clamp for cutting membrane wires, characterized in that include Base (1); The lower clamping plate (2) is arranged on the aforementioned base (1), and the upper end surface thereof has a material groove for setting the membrane filaments; A connecting plate (4) is movably mounted on the base (1); An upper clamping plate (3) is arranged on the aforementioned connecting plate (4) and can be raised and lowered along with the connecting plate (4). The upper clamping plate (3) is arranged opposite to the lower clamping plate (2) and is located above the lower clamping plate (2). A first water bag or a first air bag (31) corresponding to the aforementioned material trough is arranged below the upper clamping plate (3). In a downwardly moved state, the first water bag or the first air bag (31) can clamp the membrane filaments in the material trough of the upper clamping plate (3); A driving mechanism (6) is disposed on the base (1) and is capable of driving the lower clamping plate (2) to move upward and downward; A pressure sensor (7) is disposed on the upper clamping plate (3) and is used to detect the pressure of the first water bag or the first air bag (31); as well as The controller (100) has a command output terminal connected to the aforementioned driving mechanism (6), and a signal input terminal connected to the aforementioned pressure sensor (7).

2. The flexible clamp for cutting membrane wire according to claim 1, characterized in that A second water bag or a second air bag (21) is provided in the material trough of the lower clamping plate (2).

3. The flexible clamp for cutting membrane wire according to claim 2, characterized in that The first water bag or the first air bag (31) is in a semicircular arc shape, and correspondingly, the second water bag or the second air bag (21) is also in a semicircular arc shape.

4. The flexible clamp for cutting membrane wire according to claim 1, characterized in that There are two driving mechanisms (6), which are respectively located on both sides of the connecting plate (4).

5. The flexible clamp for cutting membrane wire according to claim 1, characterized in that The driving mechanism (6) is a cylinder which is invertedly arranged on the base (1), and the piston rod at the top of the cylinder is connected to the connecting plate (4).

6. The flexible clamp for cutting membrane wire according to claim 5, characterized in that A guide rail (5) is longitudinally arranged on the base (1), and correspondingly, a sliding block (41) which is slidably matched with the guide rail (5) is provided on the connecting plate (4).

7. The flexible clamp for cutting membrane wire according to claim 6, characterized in that There are two guide rails (5) respectively located on both sides of the connecting plate (4). Correspondingly, there are also two sliders (41) respectively located at both ends of the connecting plate (4).

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