Head guiding and locking device of co-rotating twin-screw extruder

Abstract

The utility model belongs to the technical field of machine head guiding and locking, and discloses a machine head guiding and locking device of a co-rotating twin-screw extruder. Comprising an air cylinder, an air cylinder support, a guide frame, a guide screw, a guide sleeve, a guide plate, a locking block, a proximity switch, a proximity switch support and a proximity switch baffle. A guide screw and a guide sleeve are arranged on the guide frame, so that the guide frame can freely move in the vertical direction; a guide plate is arranged to ensure that the locking block moves close to the flange lug; the stroke direction and speed of the air cylinder are consistent with those of the guide frame, and clamping stagnation is avoided. By means of the device, an operator can simply and conveniently lock the machine head, the workload of the operator is reduced, a large amount of manpower and material resources are saved, and meanwhile a guarantee is provided for long-term stable use of a unit.

Description

Technical Field

[0001] The utility model relates to the technical field of head guiding and locking, in particular to a head guiding and locking device for a co-rotating twin-screw extruder. Background Technique

[0002] The head is the core component of the mixing and extrusion system of a co-rotating twin-screw extruder, and its function is crucial. Whether the head can be locked smoothly will directly affect whether the unit can operate normally. If the head cannot be locked, the unit cannot be started.

[0003] The original head locking device has some disadvantages:

[0004] 1. The original head locking device is a ring-shaped locking structure. Limited by this structure, when the pressures of the two cylinders are inconsistent, there may be a risk of jamming of the guide frame.

[0005] 2. The guide frame moves around the center of the head, and the cylinders act linearly. The stroke direction of the guide frame is inconsistent with the stroke direction of the cylinders. There may be a risk that the stroke of the cylinders reaches the position, but the stroke of the guide frame does not reach the position, and the guide locking device cannot be opened or locked smoothly.

[0006] However, a head guiding and locking device for a co-rotating twin-screw extruder of the present application overcomes the above-mentioned problems and provides a head guiding and locking device in which the pressures of the two cylinders can be adjusted separately and the actions are not related, and the stroke direction of the guide frame is the same as the stroke direction of the cylinders. Utility Model Content

[0007] To achieve the above object, the utility model provides a head guiding and locking device for a co-rotating twin-screw extruder, in which the pressures of the two cylinders can be adjusted separately and the actions are not related, and the stroke direction of the guide frame is the same as the stroke direction of the cylinders.

[0008] The technical solution adopted by the utility model is as follows: a head guiding and locking device for a co-rotating twin-screw extruder, which is a symmetric structure and includes a cylinder 1, a cylinder support 2, a guide frame 3, a guide screw 4, a guide sleeve 5, a guide plate 6, a locking block 7, a proximity switch 8, a proximity switch support 9 and a proximity switch baffle 10;

[0009] The guide plates 6, the proximity switch supports 9 and the cylinder supports 2 are respectively fixed on the head flange ears; one end of the cylinder 1 is fixed on the cylinder support 2, and the other end is fixed on the guide frame 3; the guide sleeve 5 and the guide screw 4 are fixed on the flange ears; the guide frame 3 moves along the guide sleeve 5 and the guide screw 4; both ends of the guide frame 3 are fixedly connected with the locking blocks 7, and one side of the locking block 7 moves along the guide of the guide plate 6; the proximity switch baffle 10 is fixed on the locking block 7; the proximity switch 8 is fixed on the proximity switch support 9.

[0010] The proximity switch 8 is divided into an actuating locking switch and an actuating opening switch.

[0011] A clearance fit is provided between the guide sleeve 5 and the guide screw 4, and also between the guide sleeve 5 and the guide frame 2.

[0012] The stroke direction and speed of the cylinder 1 are the same as those of the guide frame 3. Adjusting the air source pressure of the cylinder changes the stroke speed of the cylinder 1 and the guide frame 3.

[0013] Advantages of the present utility model: With the device of the present utility model, the operator can lock the machine head simply and conveniently, which not only reduces the workload of the operator, saves a large amount of manpower and material resources, but also provides guarantee for the long-term stable use of the unit. There are guide screws and guide sleeves on the guide frame to ensure that the guide frame can move freely in the vertical direction; a guide plate is provided to ensure that the locking block moves closely against the flange ear; the stroke direction and speed of the cylinder are the same as those of the guide frame, and no jamming phenomenon will occur. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model.

[0015] Figure 2 is a schematic working view of the present utility model.

[0016] In the figure: 1 - cylinder; 2 - cylinder support; 3 - guide frame; 4 - guide screw; 5 - guide sleeve; 6 - guide plate; 7 - locking block; 8 - proximity switch; 9 - proximity switch bracket; 10 - proximity switch baffle; 11 - pin; 12 - screw. Detailed Embodiments

[0017] The following further explains the detailed embodiments of the present utility model in conjunction with examples and drawings, but is not used to limit the present utility model.

[0018] As Figure 1 shown, a head guiding and locking device for a co-rotating twin-screw extruder includes a cylinder 1, a cylinder support 2, a guide frame 3, a guide screw 4, a guide sleeve 5, a guide plate 6, a locking block 7, a proximity switch 8, a proximity switch bracket 9, a proximity switch baffle 10, a pin 11, and a screw 12.

[0019] The cylinder 1 is connected between the cylinder support 2 and the guide frame 3 through a pin 11. The cylinder support 2 is fixed to the head flange ear with a screw 12. The guide frame 3 is guided and moved through the guide sleeve 5 and the guide screw 4 fixed to the flange ear. The guide frame 3 can move smoothly due to the guide sleeve 5. The guide plate 6 is fixed to the head flange ear, the locking block 7 is fixed to the guide frame 3, the proximity switch baffle 10 is fixed to the locking block 7, the proximity switch bracket 9 is fixed to the flange ear, and the proximity switch 8 is fixed to the proximity switch bracket 9.

[0020] As Figure 2 shown, during operation, when the air source is supplied to the rod chamber of the cylinder 1, the cylinder pull rod drives the guide frame 3 to move downward. When it moves to the corresponding position, it triggers the proximity switch 8 to sense and perform the locking action. When the air source is supplied to the non-rod chamber of the cylinder 1, the cylinder pull rod drives the guide frame 3 to move upward. When it moves to the corresponding position, it triggers the proximity switch 8 to sense and perform the opening action. By adjusting the air source pressure of the cylinder, the stroke speed of the oil cylinder pull rod and the guide frame 3 can be changed.

[0021] A method for using the guiding and locking device of the head of a co-rotating twin-screw extruder is as follows:

[0022] Step 1: Fix the cylinder 1 between the cylinder support 2 and the guide frame 3 through the pin 11;

[0023] Step 2: Fix the cylinder support 2 on the head flange ear with the screw 12;

[0024] Step 3: Fix the proximity switch baffle 10 on the locking block 7, fix the locking block 7 on the guide frame 3, and the guide frame 3 is guided to move through the guide sleeve 5 and the guide screw 4 fixed on the head flange ear;

[0025] Step 4: Fix the proximity switch 8 on the proximity switch bracket 9, and fix the proximity switch bracket 9 on the head flange ear;

[0026] Step 5: When the air source is supplied to the rod chamber of the cylinder 1, the cylinder pull rod drives the guide frame 3 to move downward. When it moves to the corresponding position, it triggers the proximity switch 8 to sense and perform the locking action. When the air source is supplied to the non-rod chamber of the cylinder 1, the cylinder pull rod drives the guide frame 3 to move upward. When it moves to the corresponding position, it triggers the proximity switch 8 to sense and perform the opening action;

[0027] Step 6: Adjust the air source pressure of the cylinder to change the stroke speed of the oil cylinder pull rod and the guide frame 3.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A head guiding and locking device for a co-rotating twin-screw extruder, characterized in that The head guiding and locking device of the co-rotating twin-screw extruder is of a symmetric structure, and it includes a cylinder (1), a cylinder support (2), a guiding frame (3), guiding screws (4), guiding sleeves (5), guiding plates (6), locking blocks (7), proximity switches (8), proximity switch brackets (9) and proximity switch baffles (10). Guiding plates (6), proximity switch brackets (9) and cylinder supports (2) are respectively fixed on the head flange ears; one end of the cylinder (1) is fixed on the cylinder support (2), and the other end is fixed on the guiding frame (3); the guiding sleeves (5) and guiding screws (4) are fixed on the flange ears; the guiding frame (3) moves along the guiding sleeves (5) and guiding screws (4); locking blocks (7) are fixedly connected to both ends of the guiding frame (3), and one side of the locking blocks (7) moves along the guiding of the guiding plates (6); the proximity switch baffle (10) is fixed on the locking block (7); the proximity switch (8) is fixed on the proximity switch bracket (9).

2. The head guiding and locking device of the co-rotating twin-screw extruder according to claim 1, characterized in that, The proximity switch (8) is divided into an actuating locking action switch and an actuating opening action switch.

3. The head guiding and locking device of a co-rotating twin-screw extruder according to claim 1 or 2, characterized in that, Clearance fits are provided between the guiding sleeves (5) and the guiding screws (4), and between the guiding sleeves (5) and the guiding frame (3).

4. A head guiding and locking device for a co-rotating twin-screw extruder according to claim 1 or 2, characterized in that, The stroke direction and speed of the cylinder (1) are consistent with those of the guiding frame (3), and the stroke speed of the cylinder (1) and the guiding frame (3) is changed by adjusting the air source pressure of the cylinder.

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