Safe anti-pinch roller for assembly line

Abstract

The utility model discloses a safe anti-pinch roller for a production line, and belongs to the technical field of production lines. Comprising a base assembly, a roller assembly and a proximity switch assembly. The base assembly is fixedly arranged at a port of the assembly line, the roller assembly is detachably and rotatably installed on the base assembly, the proximity switch assembly is arranged between the roller assembly and the base assembly, and the PLC is in communication connection with the proximity switch assembly and a controller of the assembly line. When a foreign matter enters between the assembly line and the roller assembly, the position of the roller assembly deviates, signals of the proximity switch assembly are interrupted, at the moment, the PLC rapidly sends a stop signal to a controller of the assembly line, the assembly line is suddenly stopped, and especially when the body of an operator is clamped between the assembly line and the roller assembly, the assembly line is stopped. And the production line sudden stop can protect the personal safety of operators, so that the safety protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of production lines, in particular to a safety anti-pinch roller for production lines. Background Art

[0002] At present, refrigerators are basically produced using automated assembly lines. Adjacent assembly lines generally use rollers for transition. There is a risk of being caught between the rollers and the assembly lines. Currently, safety fences are mainly set between the chain plate line and the rollers in the assembly line body to play a safety protection role. The safety fences are not only unsightly but also squeeze the operating space of the staff. Utility Model Content

[0003] The purpose of the utility model is to provide a safety anti-pinch roller for an assembly line, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:

[0004] A safety anti-pinch roller for an assembly line, comprising:

[0005] A base assembly, wherein the base assembly is fixedly disposed on the assembly line port;

[0006] A roller assembly, the roller assembly is detachably and rotatably mounted on the base assembly;

[0007] A proximity switch assembly, wherein the proximity switch assembly is disposed between the drum assembly and the base assembly;

[0008] A PLC controller is communicatively connected with the proximity switch assembly and a controller of the assembly line.

[0009] As a further solution of the utility model: the base assembly includes two mounting plates and a plurality of fixing bolts, the two mounting plates are symmetrically mounted on the assembly line ports through the fixing bolts, and the mounting plates are each provided with an arc groove.

[0010] As a further solution of the utility model: the roller assembly includes a center column and a roller body, the roller body is sleeved on the middle section of the center column, and the two ends of the center column are respectively placed in the two arc grooves of the two mounting plates.

[0011] As a further solution of the utility model: there are two proximity switch assemblies, and the two proximity switch assemblies are symmetrically arranged on the base assembly.

[0012] As a further solution of the utility model: the proximity switch assembly includes a right-angle steel plate and a proximity switch body, one side of the right-angle steel plate is fixedly mounted on a side surface of the mounting plate, and the proximity switch body is fixedly penetrated through the other side of the right-angle steel plate.

[0013] The utility model has the following beneficial effects:

[0014] The utility model arranges a safety anti-pinch roller at the port of the assembly line, and the safety anti-pinch roller includes a base assembly, a roller assembly and a proximity switch assembly; if no foreign matter enters between the assembly line and the roller assembly, the signal of the proximity switch assembly is normal, and the assembly line operates normally; if foreign matter enters between the assembly line and the roller assembly, causing the position of the roller assembly to shift, the signal of the proximity switch assembly is interrupted, and at this time the PLC controller quickly sends a stop signal to the controller of the assembly line, and the assembly line stops suddenly. Especially when the body of an operator is stuck between the assembly line and the roller assembly, the emergency stop of the assembly line can protect the personal safety of the operator, thereby playing a safety protection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a safety anti-pinch roller for an assembly line installed on an assembly line in the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the structure of a safety anti-pinch roller for an assembly line.

[0018] In the figure: 1. assembly line; 2. mounting plate; 21. arc groove; 3. fixing bolt; 4. center column; 5. drum body; 6. right-angle steel plate; 7. proximity switch body. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, it should not be understood as a limitation on the present invention.

[0021] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0022] See also Figure 1-2 As shown, the embodiment of the utility model provides a safety anti-pinch roller for an assembly line, including a base assembly, a roller assembly and a proximity switch assembly. The base assembly is fixedly arranged at the port of the assembly line 1, the roller assembly is detachably rotatably mounted on the base assembly, and the proximity switch assembly is arranged between the roller assembly and the base assembly. The PLC controller is communicatively connected with the proximity switch assembly and the controller of the assembly line 1, and the PLC controller is a conventional setting and is not shown in the figure.

[0023] When the present invention is in use, if no foreign matter enters between the assembly line 1 and the roller assembly, the signal of the proximity switch assembly is normal and the assembly line 1 operates normally; if foreign matter enters between the assembly line 1 and the roller assembly, causing the position of the roller assembly to shift, the signal of the proximity switch assembly is interrupted, and the PLC controller quickly sends a stop signal to the controller of the assembly line 1, and the assembly line 1 stops suddenly. Especially when the operator's body is stuck between the assembly line 1 and the roller assembly, the emergency stop of the assembly line 1 can protect the operator's personal safety, thereby playing a safety protection role.

[0024] See also Figure 2 As shown, in one embodiment of the present invention, the base assembly includes two mounting plates 2 and a plurality of fixing bolts 3. The two mounting plates 2 are composed of channel steel weldments. The mounting plates 2 are each provided with an arc groove 21. Figure 1 The two mounting plates 2 are symmetrically mounted on the ports of the assembly line 1 through fixing bolts 3, so that the base assembly can be easily disassembled and maintained.

[0025] Preferably, see Figure 2 As shown, there are two proximity switch assemblies, which are symmetrically arranged on the base assembly. As long as one end of the drum body 5 is displaced, the proximity switch assembly signal can be interrupted, thereby improving the reliability of the utility model and achieving a better protective effect.

[0026] See also Figure 2As shown, in one embodiment of the utility model, the roller assembly includes a center column 4 and a roller body 5, the roller body 5 is fixedly sleeved on the middle section of the center column 4, and the two ends of the center column 4 are respectively placed in two arc grooves 21 of two mounting plates 2. When the roller body 5 is normally placed in the arc groove 21, the proximity switch assembly signal is normal. When foreign matter enters between the assembly line 1 and the roller assembly, the roller body 5 moves from the arc groove 21 due to the squeezing of the foreign matter, and the proximity switch assembly signal is interrupted at this time.

[0027] See also Figure 2 As shown, in one embodiment of the utility model, the proximity switch assembly includes a right-angle steel plate 6 and a proximity switch body 7. One side of the right-angle steel plate 6 is fixedly mounted on a side of a mounting plate 2, and the proximity switch body 7 is fixedly penetrated through the other side of the right-angle steel plate 6. The proximity switch assembly with this structural arrangement is easy to install and has a good detection effect. It can accurately complete the start and stop actions according to the position changes of the drum body 5.

[0028] The working principle of this utility model:

[0029] When there is no foreign matter between the assembly line 1 and the drum body 5, the drum body 5 is normally placed in the arc grooves 21 of the two mounting plates 2. At this time, the distance between the proximity switch body 7 and the drum body 5 is within the setting range of the proximity switch body 7, the signal of the proximity switch body 7 is normal, and the assembly line 1 is transported normally;

[0030] If foreign matter enters between the assembly line 1 and the roller assembly, and the roller body 5 moves from the arc groove 21 due to the squeezing of the foreign matter, the signal of the proximity switch assembly is interrupted. At this time, the PLC controller quickly sends a stop signal to the controller of the assembly line 1, and the assembly line 1 stops urgently.

[0031] The above detailed description of the preferred embodiments of the utility model should not be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A safety anti-pinch roller for an assembly line, characterized in that: include: A base assembly, the base assembly being fixedly arranged at a port of the assembly line (1); A roller assembly, the roller assembly is detachably and rotatably mounted on the base assembly; A proximity switch assembly, wherein the proximity switch assembly is disposed between the drum assembly and the base assembly; A PLC controller is communicatively connected with the proximity switch assembly and a controller of the assembly line (1).

2. The safety anti-pinch roller for an assembly line according to claim 1 is characterized in that: The base assembly comprises two mounting plates (2) and a plurality of fixing bolts (3); the two mounting plates (2) are symmetrically mounted on the ports of the assembly line (1) via the fixing bolts (3); and arc grooves (21) are provided on the mounting plates (2).

3. The safety anti-pinch roller for an assembly line according to claim 2 is characterized in that: The roller assembly comprises a central column (4) and a roller body (5), wherein the roller body (5) is sleeved on the middle section of the central column (4), and the two ends of the central column (4) are respectively placed in two arc-shaped grooves (21) of the two mounting plates (2).

4. The safety anti-pinch roller for an assembly line according to claim 3 is characterized in that: There are two proximity switch assemblies, and the two proximity switch assemblies are symmetrically arranged on the base assembly.

5. The safety anti-pinch roller for an assembly line according to claim 4 is characterized in that: The proximity switch assembly comprises a right-angle steel plate (6) and a proximity switch body (7), one side of the right-angle steel plate (6) is fixedly mounted on a side surface of the mounting plate (2), and the proximity switch body (7) is fixedly penetrated through the other side of the right-angle steel plate (6).

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