An automatic cutting device

Abstract

The utility model discloses an automatic cutting device, including bottom frame, bottom frame has the long lever of one end of going out in it, the transmission mechanism and cutting mechanism of installing on the long lever, cutting mechanism includes a pair of cutting bow, cutting bow has the bow body and the bow string, one end of two bow body is hinged with each other before long lever front end, and the other end of two bow body can rotate freely, and two cutting bows are driven by transmission mechanism, and repeat the action of opening or closing. The utility model discloses cutting device is used for with the kneading machine cooperation of bottom discharge, and is suitable for cutting the butyl self -adhesive material of building protection film.

Description

Technical Field

[0001] This utility model relates to the technical field of kneaders, and particularly to the outlet cutting device of a kneader. Background Technology

[0002] A kneader is a device used to produce high-viscosity products such as rubber, sealant, and hot melt adhesive. After the raw materials are put into the kneader, the material is sheared and mixed evenly by the stirring paddle. A screw extrusion mechanism is usually set at the bottom of the kneader. The mixed material is extruded into the kneader through the screw extrusion mechanism. The material is then cut into the corresponding length according to the subsequent processing needs. At present, most kneaders discharge from the side. For example, the patent with authorization announcement number CN222473048U, "A cutting device for the discharge port of a silicone rubber kneader", uses a cutter (15) to continuously cut the rubber material extruded from the discharge port. The cut rubber material falls onto the conveyor belt (8) for conveying.

[0003] In the existing technology, the side-cutting method is more suitable for harder rubber materials because it can cut the extruded strips into individual blocks, which are easy to transport on the conveyor belt. However, for softer and more fluid rubber materials (such as butyl self-adhesive rubber used to prepare building protective films), this method cannot be used because the discharge port of the kneader faces downward, allowing the material to flow into the tray below. It is not possible to use the same cutting method as side discharge. Therefore, the applicant has developed a new cutting device for use with a bottom-discharge kneader, specifically for cutting fluid rubber materials. Utility Model Content

[0004] The purpose of this invention is to provide an automatic cutting device to solve the problem that free-flowing rubber materials cannot be discharged and cut from the side.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic cutting device includes a bottom frame having a long rod extending to one end; a transmission mechanism and a cutting mechanism mounted on the long rod; the cutting mechanism includes a pair of cutting bows having bow bodies and bowstrings, one end of each bow body being hinged to the front end of the long rod, the other end of each bow body being freely rotatable, and the two cutting bows being driven by the transmission mechanism to repeatedly open or close.

[0007] A set of pulleys is provided behind the hinge position. One end of the bowstring is fixed to the free-rotating end of the bow body. The other ends of the bowstrings cross each other and are then connected to the head end of a tension spring around the pulleys on different sides. The tail end of the tension spring is fixed to the end of the long rod.

[0008] The transmission mechanism is a cylinder, and the direction of the piston rod and cylinder barrel of the cylinder is consistent with the length direction of the long rod.

[0009] The transmission mechanism also includes a pair of auxiliary bent rods, one end of which is rotatably connected to the end of the piston rod, and the other ends of which are movably connected to the bow body on the same side.

[0010] The bowstring of the bow being cut is an electric heating wire.

[0011] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] This invention develops a new automatic cutting device for use with a bottom-discharge kneading machine. It is suitable for cutting soft and fluid adhesives such as butyl self-adhesive for building protective films. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cutting bow of this utility model in the open state;

[0014] Figure 2 This is a schematic diagram of the cut bow of this utility model in a closed state; Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Example

[0017] like Figure 1 and Figure 2 The automatic cutting device at the outlet of the kneader shown is installed directly below the outlet. It includes a bottom frame 1, on which a long rod 2 extends to one end. A transmission mechanism and a cutting mechanism driven by the transmission mechanism are installed on the long rod 2.

[0018] The transmission mechanism is installed along the length of the long rod 2. Specifically, the transmission mechanism is a cylinder, and the direction of the piston rod 31 and the cylinder barrel 32 of the cylinder is consistent with the length of the long rod 2.

[0019] A cutting mechanism is installed at the outermost end of the long rod 2. The cutting mechanism includes a pair of cutting bows. Each cutting bow has a bow body 41 and a bowstring 42. The bow body 41 of the cutting bow is semi-circular in shape. One end of each of the two bow bodies 41 is hinged to each other, and the hinge node 43 is located at the outermost end of the long rod 2. The other end of each of the two bow bodies 41 can rotate freely, so that when the two cutting bows are put together, the two bow bodies 41 can be combined into a complete circle.

[0020] A set of pulleys 44 is provided behind the hinge node 43 of the long rod 2. One end of the bowstring 42 on both sides is fixed to the free rotation end of the bow body 41. The other ends of the bowstrings 42 cross each other and then wrap around the pulleys 44 on different sides, and are respectively connected to the head end of the tension spring 45. The tail end of the tension spring 45 is fixed to the rear end of the long rod 2.

[0021] The transmission mechanism also includes a pair of auxiliary bent rods 33. One end of the two auxiliary bent rods 33 is rotatably connected to the end of the piston rod 31, and the other end of the auxiliary bent rods 33 is movably connected to the middle section of the bow body 41 on the same side.

[0022] When not in operation, the cutting device, such as Figure 1 As shown, the cutting bow remains open, with the rubber material flowing down from the open position between the two bowstrings. When the cutting device is turned on, the cylinder drives the piston rod 31 to extend forward, pushing a pair of auxiliary curved rods 33 forward. The forward-moving auxiliary curved rods 33 then push the connected bow body 41 to rotate in the closing direction. During the rotation, the two bowstrings 42 will come together and merge into a single unit. Figure 2 In this state, a shearing force is formed on the flowing rubber material, which is equivalent to cutting the flowing rubber material with "scissors". After cutting, the piston rod 31 of the cylinder retracts, which drives the auxiliary bent rod 33 to retract, thereby driving the cutter bow connected to it to open again. Thus, the cutter bow repeatedly performs the opening and closing action.

[0023] The bowstring 42 uses an electric heating wire. The relatively high temperature of the electric heating wire makes it difficult for viscous adhesive to stick to the bowstring during the cutting process.

[0024] A tension spring 45 is connected to the rear end of the heating wire. The tension spring 45 is used to maintain the tension of the heating wire and prevent the heating wire from being easily pulled and broken during the cutting of the rubber material.

[0025] An electrical box (not shown in the figure) is installed on the bottom frame 1. The electrical box is equipped with a power switch button, a start button and a stop button for cutting the bow, and knobs for adjusting the current and voltage.

[0026] When this application is in operation, the power is turned on, and the heating wire is energized and heated. The cutting bow, located directly below the discharge port, is initially open. The viscous material slowly flows out from the discharge port at the bottom of the kneader and flows through the opening between the two cutting bows. After the start button of the cutting bow is turned on, the cutting bow performs a shearing action on the material. The cut material falls into the tray below, and the cutting bow reopens. This process of continuously shearing the flowing material completes the cutting and packaging of the material.

[0027] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An automatic cutting device, characterized by: Includes a bottom frame having a long rod extending to one end; a transmission mechanism and a cutting mechanism mounted on the long rod; The cutting mechanism includes a pair of cutting bows, each having a bow body and a bowstring. One end of each bow body is hinged to the front end of a long rod, and the other end of each bow body is freely rotatable. The two cutting bows are driven by the transmission mechanism to repeatedly open or close.

2. An automatic cutting device as claimed in claim 1, characterized in that: A set of pulleys is provided behind the hinge position. One end of the bowstring is fixed to the free-rotating end of the bow body. The other ends of the bowstrings cross each other and are then connected to the head end of a tension spring around the pulleys on different sides. The tail end of the tension spring is fixed to the end of the long rod.

3. An automatic cutting device as claimed in claim 2, characterized in that: The transmission mechanism is a cylinder, and the direction of the piston rod and cylinder barrel of the cylinder is consistent with the length direction of the long rod.

4. The automatic cutting device as described in claim 3, characterized in that: The transmission mechanism also includes a pair of auxiliary bent rods, one end of which is rotatably connected to the end of the piston rod, and the other ends of which are movably connected to the bow body on the same side.

5. An automatic cutting device as described in claim 4, characterized in that: The bowstring of the bow being cut is an electric heating wire.

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