A cutting device for an open mill

Abstract

The utility model relates to a cutting knife device for open mill, cutting knife device includes two round piece knives, two round piece knives side by side with open mill's front roller opposite, the tool rest of two round piece knives is coaxial, the axle is connected with drive arrangement, drive arrangement drive axle rotation, two round piece knives follow the action, close or far open mill's front roller, drive arrangement is cylinder, the axle is connected with drive arrangement through connecting rod structure, the tool rest of round piece knife is elastic tool rest. It is reasonable in design, simple structure, when using, drive arrangement drive axle rotation, make two round piece knives close open mill's front roller, cut the rubber that is wrapped in open mill's front roller.

Description

Technical Field

[0001] This utility model relates to open mills, and more specifically to a cutting device for open mills. Background Technology

[0002] In the processing and production of polymer materials such as rubber and plastics, the open mill is an indispensable key piece of equipment, mainly used for plasticizing, mixing, and sheeting processes. Its working principle involves two relatively rotating rollers that extrude, shear, and stretch the material, achieving uniform mixing and plasticization. In actual production, after the material is processed into a sheet of a certain thickness by the open mill rollers, a cutting device is usually used to cut the sheet to a fixed width or in sections to facilitate subsequent molding, vulcanization, and other processes.

[0003] Traditional cutters can easily scratch the surface of the front rollers of an open mill when cutting rubber wrapped around them. To address this, we designed a circular blade instead of a traditional cutter. When cutting the rubber wrapped around the front rollers of an open mill, the blade rolls and is less likely to scratch the surface of the front rollers. Utility Model Content

[0004] Based on the design concept of a circular blade, this utility model proposes a cutting device for an open mill.

[0005] The technical solution of this utility model: A cutting device for an open mill includes two circular blades arranged side-by-side, opposite the front roller of the open mill. The blade holders of the two blades are coaxial, and the shaft is connected to a drive device. The drive device rotates the shaft, causing the two blades to move closer to or further away from the front roller of the mill. The drive device is a cylinder, and the shaft is connected to the drive device via a linkage structure. The blade holders are flexible. The flexible blade holder design provides cushioning and prevents damage to the blades when the cylinder drives the shaft to rotate (during use, the two blades closest to the front roller of the open mill press against the rubber covering the front roller).

[0006] Further refining the above technical solution, the front end of the blade holder of the circular blade is a double-arm structure, which includes an upper swing arm and a lower fixed arm. The circular blade is mounted on the upper swing arm, and a spring structure is installed at the front end of the blade holder of the circular blade. The spring structure consists of a guide rod and a spring. The upper end of the guide rod is hinged to the upper swing arm, and the lower end of the guide rod passes through the lower fixed arm and is clearance-fitted with the lower fixed arm. The spring sleeve is on the guide rod, with the upper end abutting against the hinge seat at the upper end of the guide rod and the lower end abutting against the lower fixed arm. A limit switch is installed at the lower end of the guide rod.

[0007] Further refining the above technical solution, the end of the circular blade holder is fitted onto the shaft and fixed by bolts; a transverse groove is provided on the outer circumferential surface of the shaft, and the bolts extend into the transverse groove. This design facilitates adjustment of the distance between the two circular blades to suit the cutting needs of films of different widths.

[0008] To further refine the above technical solution, the limiting device is an adjusting nut, which is fitted onto the lower end of the guide rod and threadedly connected to the lower end of the guide rod.

[0009] The advantages of this utility model are that it is reasonably designed and has a simple structure. When in use, the drive device drives the shaft to rotate, so that the two circular blades approach the front roller of the open mill and cut the rubber wrapped on the front roller of the open mill. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cutting device used in an open mill.

[0011] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0012] In the diagram, 1 is a circular blade, 2 is the front roller of the open mill, 3 is the blade holder of the circular blade, 3-1 is the upper swing arm, 3-2 is the lower fixed arm, 4 is the shaft, 5 is the cylinder, 6 is the connecting rod structure, 7 is the spring structure, 7-1 is the guide rod, 7-2 is the spring, 8 is the adjusting nut, and 9 is the bolt. Detailed Implementation

[0013] like Figure 1-2 As shown, a cutting device for an open mill includes two circular blades 1, which are arranged side by side and opposite to the front roller 2 of the open mill; the blade holders 3 of the two circular blades are coaxial with a shaft 4, and the shaft 4 is connected to a cylinder 5 through a connecting rod structure 6; the blade holder 3 of the circular blades is an elastic blade holder. The front end of the blade holder 3 of the circular blade cutter has a double-arm structure, which includes an upper swing arm 3-1 and a lower fixed arm 3-2. The circular blade 1 is mounted on the upper swing arm 3-1. A spring structure 7 is installed at the front end of the blade holder 3 of the circular blade cutter. The spring structure 7 consists of a guide rod 7-1 and a spring 7-2. The upper end of the guide rod 7-1 is hinged to the upper swing arm 3-1, and the lower end of the guide rod 7-1 passes through the lower fixed arm 3-2 and is clearance-fitted with the lower fixed arm 3-2. The spring 7-2 is sleeved on the guide rod 7-1, with its upper end abutting against the hinge seat at the upper end of the guide rod 7-1 and its lower end abutting against the lower fixed arm 3-1. A limit is installed at the lower end of the guide rod 7-1; the limit is an adjusting nut 8, which is sleeved on the lower end of the guide rod 7-1 and threadedly connected to the lower end of the guide rod 7-1. The end of the blade holder 3 of the circular blade is fitted onto the shaft 4 and fixed by bolts 9; a transverse groove is provided on the outer circumference of the shaft 4, and bolts 9 extend into the transverse groove.

[0014] When the above-mentioned cutting device is in use, the cylinder 5 drives the shaft 4 to rotate, and the two circular blades 1 move accordingly, moving closer to or further away from the front roller 2 of the mill; when the two circular blades 1 approach the front roller 2 of the open mill, they cut the rubber wrapped around the front roller 2 of the open mill.

[0015] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A cutting device for an open mill, the cutting device comprising two circular blades arranged side-by-side and facing the front roller of the open mill; characterized in that, The two circular blade holders are coaxial, and the shaft is connected to the drive device; the drive device drives the shaft to rotate, and the two circular blades move accordingly, moving closer to or further away from the front roller of the mill. The driving device is a cylinder, and the shaft is connected to the driving device via a connecting rod structure. The blade holder of the circular blade is a flexible blade holder.

2. The cutting device for an open mill according to claim 1, characterized in that, The front end of the blade holder of the circular blade is a double-arm structure, which includes an upper swing arm and a lower fixed arm. The circular blade is mounted on the upper swing arm. A spring structure is installed at the front end of the blade holder of the circular blade. The spring structure consists of a guide rod and a spring. The upper end of the guide rod is hinged to the upper swing arm, and the lower end of the guide rod passes through the lower fixed arm and is clearance-fitted with the lower fixed arm. The spring sleeve is on the guide rod, with the upper end abutting against the hinge seat at the upper end of the guide rod and the lower end abutting against the lower fixed arm. A limit switch is installed at the lower end of the guide rod.

3. A cutting device for an open mill according to claim 2, characterized in that, The end of the blade holder of the circular blade is sleeved on the shaft and fixed by bolts; a transverse groove is provided on the outer circumferential surface of the shaft, and the bolts extend into the transverse groove.

4. A cutting device for an open mill according to claim 2, characterized in that, The limiting device is an adjusting nut, which is fitted onto the lower end of the guide rod and threadedly connected to the lower end of the guide rod.

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