Automatic brake detection mechanism for valve bag

Abstract

The utility model relates to the technical field of valve bag processing, and discloses an automatic brake detection mechanism for a valve bag, which comprises a bottom frame, a plurality of groups of bottom plates are symmetrically arranged at the upper end of the bottom frame, each group of bottom plates is connected with a chuck bracket, safety chucks are mounted at the upper ends of the chuck brackets, and an air expansion shaft is clamped between each group of safety chucks. According to the utility model, the rotating speed and the braking of the air expansion shaft are controlled through the magnetic powder brake, the accurate control on the tension of the coil stock is realized, in addition, the front rotating roller, the middle roller, the rear rotating roller and the pressure sensor are arranged, so that the tension of the coil stock can be accurately controlled, and the tension of the coil stock can be accurately controlled. Automatic detection, adjustment and braking of the tension of the coil stock are achieved, and the automation degree of the unwinding process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve bag processing, in particular to an automatic brake detection mechanism for a valve bag. Background Art

[0002] The production of valve bags typically requires unwinding a coil. To ensure stability and safety during the unwinding process, a mechanism is required that can automatically detect coil tension and adjust the unwinding speed accordingly. Existing technologies for coil tension detection and control are often inaccurate and unable to adapt to the production needs of valve bags of varying specifications and materials. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a valve bag automatic brake detection mechanism, which effectively solves the problems raised in the above background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic brake detection mechanism for a valve bag, comprising a base frame, a plurality of groups of base plates symmetrically provided on the upper end of the base frame, each group of base plates being connected to a chuck bracket, a safety chuck being installed on the upper end of the chuck bracket, an air expansion shaft being clamped between each group of safety chucks, one of each group of safety chucks being connected to a magnetic powder brake, and a conveying roller assembly being provided on the upper end of the base frame and on one side of each group of chuck brackets.

[0005] Preferably, the conveying roller assembly includes a symmetrically arranged front roller and a rear roller, both ends of the front roller and the rear roller are rotatably connected to a first L-shaped support plate, a support block is provided at the lower end of the first L-shaped support plate, and the support block is connected to the base frame, an intermediate roller is provided between the front roller and the rear roller, both ends of the intermediate roller are rotatably connected to a second L-shaped support plate, a pressure sensor is provided at the lower end of the second L-shaped support plate, and the pressure sensor is located on the base frame.

[0006] Preferably, one side of each group of chuck brackets is provided with an auxiliary bracket for supporting the pneumatic shaft.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] The utility model controls the rotation speed and braking of the air expansion shaft through the magnetic powder brake to achieve precise control of the coil tension. In addition, it is equipped with a front roller, an intermediate roller, a rear roller and a pressure sensor to achieve automatic detection, adjustment and braking of the coil tension, thereby improving the degree of automation of the unwinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0010] In the attached figure:

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 This is a structural diagram of the utility model from another perspective;

[0013] Figure 3 This is a schematic structural diagram of the conveyor roller assembly of the utility model;

[0014] In the figure: 1. Base frame; 2. Bottom plate; 3. Chuck bracket; 4. Safety chuck; 5. Pneumatic shaft; 6. Magnetic powder brake; 7. Conveyor roller assembly; 701. Front roller; 702. Rear roller; 703. First L-shaped support plate; 704. Support block; 705. Middle roller; 706. Second L-shaped support plate; 707. Pressure sensor; 8. Auxiliary bracket. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] Embodiment 1, by Figure 1-Figure 3 The utility model includes a base frame 1, a plurality of base plates 2 are symmetrically provided on the upper end of the base frame 1, a chuck bracket 3 is connected to each group of base plates 2, a safety chuck 4 is installed on the upper end of the chuck bracket 3, an air shaft 5 is clamped between each group of safety chucks 4, one of each group of safety chucks 4 is connected to a magnetic powder brake 6, and a conveying roller assembly 7 is provided on the upper end of the base frame 1 and on one side of each group of chuck brackets 3;

[0017] The conveying roller assembly 7 includes a symmetrically arranged front roller 701 and a rear roller 702. Both ends of the front roller 701 and the rear roller 702 are rotatably connected to a first L-shaped support plate 703. A support block 704 is provided at the lower end of the first L-shaped support plate 703. The support block 704 is connected to the base frame 1. An intermediate roller 705 is provided between the front roller 701 and the rear roller 702. Both ends of the intermediate roller 705 are rotatably connected to a second L-shaped support plate 706. A pressure sensor 707 is provided at the lower end of the second L-shaped support plate 706. The pressure sensor 707 is located on the base frame 1.

[0018] An auxiliary bracket 8 for supporting the pneumatic shaft 5 is provided on one side of each set of chuck brackets 3 .

[0019] Working principle: When the coil begins to unwind, the magnetic powder brake 6 controls the rotation speed of the air shaft 5. As the coil is unwound, the coil will pass through the front roller 701, the middle roller 705, and the rear roller 702 on the conveyor roller assembly 7 in sequence, and pass through in a wave-like manner. When the tension of the coil changes, the middle roller 705 will be subjected to different degrees of pressure. At this time, the pressure sensor 707 will sense the pressure change and transmit the signal to the magnetic powder brake 6. The magnetic powder brake 6 adjusts the rotation speed of the air shaft 5 or brakes it according to the received signal, thereby realizing automatic detection and braking control of the coil tension.

Claims

1. A valve bag automatic brake detection mechanism, comprising a base frame (1), characterized in that: A plurality of bottom plates (2) are symmetrically provided at the upper end of the base frame (1), each bottom plate (2) being connected to a chuck bracket (3), a safety chuck (4) being installed at the upper end of the chuck bracket (3), an air expansion shaft (5) being clamped between each safety chuck (4), one of each safety chuck (4) being connected to a magnetic powder brake (6), and a conveying roller assembly (7) being provided at the upper end of the base frame (1) and located on one side of each chuck bracket (3).

2. The valve bag automatic brake detection mechanism according to claim 1, characterized in that: The conveying roller assembly (7) comprises a front roller (701) and a rear roller (702) which are symmetrically arranged. Both ends of the front roller (701) and the rear roller (702) are rotatably connected to a first L-shaped support plate (703). A support block (704) is provided at the lower end of the first L-shaped support plate (703). The support block (704) is connected to the base frame (1). An intermediate roller (705) is provided between the front roller (701) and the rear roller (702). Both ends of the intermediate roller (705) are rotatably connected to a second L-shaped support plate (706). A pressure sensor (707) is provided at the lower end of the second L-shaped support plate (706). The pressure sensor (707) is located on the base frame (1).

3. The valve bag automatic brake detection mechanism according to claim 1, characterized in that: One side of each set of chuck brackets (3) is provided with an auxiliary bracket (8) for supporting the pneumatic shaft (5).

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