Cutter device convenient to replace

Abstract

The utility model discloses a cutting knife device convenient to replace, which relates to the technical field of tire part production equipment and comprises a rotating shaft, a circular knife, an annular knife holder and a compression ring, the annular knife holder is sleeved on the rotating shaft, and one side of the annular knife holder is provided with an annular boss; the outer diameter of the annular boss is smaller than that of the annular tool apron, and the annular boss and the annular tool apron are coaxially arranged; the annular boss is sleeved with the pressing ring, the annular cutter is also sleeved with the annular boss and is composed of two identical semi-ring blades, and the two sides of the annular cutter are in contact with the annular cutter holder and the pressing ring respectively. Four groups of axial screw holes corresponding to each other in position are formed in the annular cutter holder, the annular cutter and the compression ring, and the annular cutter holder, the annular cutter and the compression ring are connected through four axial screws; a plurality of radial screw holes are further formed in the annular tool apron, and the annular tool apron is detachably connected with the rotating shaft through a plurality of radial screws; compared with an existing cutter replacement mode, the cutter replacement device has the advantages that the operation of replacing a single cutter in a group of cutters can be realized, the operation process is simplified, and the operation time of halting for cutter replacement is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of tire component production equipment, in particular to a cutting device which is easy to replace. Background Art

[0002] At present, the cutting process uses disc knives to cut belt layers, films, and bead wraps. Carcass cords and belt layers are the skeleton materials that constitute the tire. The cord cutting state, belt width stability, wire leakage, etc. directly affect the tire quality and dynamic performance. The above important influencing factors require the cutting knife to be sharp and wear-free.

[0003] However, the current cutter is an integrated cutter, with multiple disc cutters fixed on the same rotating shaft. When loading and unloading, the rotating shaft and all the disc cutters need to be removed together, and then the disc cutters that need to be replaced are removed. After replacing the new cutters, they still need to be installed one by one. The cutter replacement process requires two people to cooperate, and the downtime for cutter replacement is long, the cost is high, and there are certain safety risks. Utility Model Content

[0004] The purpose of the utility model is to provide a cutting device which is easy to replace in view of the defects in the prior art.

[0005] The technical scheme of the utility model is: a knife cutting device which is easy to replace, comprising a rotating shaft, a circular knife, an annular knife seat and a pressure ring, wherein the annular knife seat is sleeved on the rotating shaft, and an annular boss is arranged on one side of the annular knife seat; the outer diameter of the annular boss is smaller than the outer diameter of the annular knife seat, and the two are coaxially arranged; the pressure ring is sleeved on the annular boss, and the circular knife is also sleeved on the annular boss, and the circular knife is composed of two identical half-ring blades, and the two sides of the circular knife seat are in contact with the annular knife seat and the pressure ring respectively;

[0006] The annular knife seat, circular knife and pressure ring are provided with multiple groups of axial screw holes with corresponding positions, and the three are connected by multiple axial screws; the annular knife seat is also provided with multiple radial screw holes, which are detachably connected to the rotating shaft through multiple radial screws.

[0007] Preferably, a fixed key is provided on the rotating shaft, and a key groove adapted to the fixed key is opened on the inner wall of the annular knife seat.

[0008] Preferably, the annular blade seat and the pressure ring are both provided with four axial screw holes in a circumferential array, and correspondingly, each of the semi-annular blades is provided with two axial screw holes.

[0009] Preferably, two positioning protrusions are provided in a circular array on one side of the annular knife seat, and two positioning grooves adapted to the positioning protrusions are provided in a circular array on one side of the pressure ring. Correspondingly, each of the semi-ring blades is provided with a positioning hole adapted to the positioning protrusion.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] Compared with the current method of replacing cutters, this device can realize the operation of replacing a single cutter in a group of cutters, simplifying the operation process and shortening the operation time of stopping for tool replacement; when replacing, there is no need to remove the rotating shaft, and it can be operated by one person, saving labor and reducing the danger during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the assembly of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the annular knife seat.

[0015] In the figure: 1, rotating shaft, 101, fixing key, 2, annular knife seat, 201, radial screw hole, 202, keyway, 3, annular boss, 4, positioning protrusion, 5, semi-ring blade, 501, positioning hole, 6, pressure ring, 601, positioning groove, 7, axial screw hole. DETAILED DESCRIPTION

[0016] The utility model is further described below with reference to the accompanying drawings and embodiments. Embodiment 1

[0017] Reference Figure 1-3 As shown, a cutting device that is easy to replace includes a rotating shaft 1, a circular ring knife, an annular knife seat 2 and a pressure ring 6. The annular knife seat 2 is mounted on the rotating shaft 1, and an annular boss 3 is provided on one side of the annular knife seat; the outer diameter of the annular boss 3 is smaller than the outer diameter of the annular knife seat 2, and the two are coaxially arranged; the pressure ring 6 is mounted on the annular boss 3, and the circular ring knife is also mounted on the annular boss 3, which is composed of two identical semi-ring blades 5, and its two sides are respectively in contact with the annular knife seat 2 and the pressure ring 6.

[0018] The annular knife seat 2, the circular knife and the pressing ring 6 are provided with four groups of axial screw holes 7 at corresponding positions, and the three are connected by four axial screws; specifically, the annular knife seat 2 and the pressing ring 6 are provided with four axial screw holes 7 in a circumferential array, and correspondingly, each half-ring blade 5 is provided with two axial screw holes 7. The annular knife seat 2 is also provided with a plurality of radial screw holes 201, which are detachably connected to the rotating shaft 1 through a plurality of radial screws.

[0019] A fixed key 101 is arranged on the rotating shaft 1 , and a key slot 202 adapted to the fixed key 101 is opened on the inner wall of the annular knife seat 2 .

[0020] During use, a plurality of circular cutters are mounted on the rotating shaft 1 in the above manner. When some cutters are damaged and need to be replaced, the corresponding pressing ring 6 is loosened and the damaged half-ring blade 5 is replaced.

[0021] Compared with the current method of replacing cutters, the present device can realize the operation of replacing a single cutter in a group of cutters, thereby simplifying the operation process and shortening the operation time of stopping the machine for changing cutters. When replacing, there is no need to remove the rotating shaft 1, and it can be operated by one person, saving labor and reducing the danger during the operation. Embodiment 2

[0022] As a preferred embodiment of the present utility model, this embodiment adds a positioning mechanism on the basis of the first embodiment, specifically:

[0023] In this embodiment, two positioning protrusions 4 are provided in a circular array on one side of the annular knife seat 2, and two positioning grooves 601 adapted to the positioning protrusions 4 are provided in a circular array on one side of the pressure ring 6. Correspondingly, each semi-ring blade 5 is provided with a positioning hole 501 adapted to the positioning protrusion 4.

[0024] During assembly, by cooperating with the positioning protrusion 4, the positioning hole 501 and the positioning groove 601, the annular knife seat 2, the semi-ring blade 5 and the axial screw hole 7 on the pressure ring 6 can be quickly aligned, thereby helping to improve the assembly efficiency of the device.

[0025] The present invention is not limited to the above-mentioned implementation modes. Within the knowledge scope of those skilled in the art, various changes can be made without departing from the purpose of the present invention. The changed contents still belong to the protection scope of the present invention.

Claims

1. A knife cutting device that is easy to replace, comprising a rotating shaft and a circular knife, characterized in that: It also includes an annular knife seat and a pressure ring, wherein the annular knife seat is sleeved on the rotating shaft, and an annular boss is provided on one side of the annular knife seat; the outer diameter of the annular boss is smaller than the outer diameter of the annular knife seat, and the two are coaxially arranged; the pressure ring is sleeved on the annular boss, and the circular knife is also sleeved on the annular boss, which is composed of two identical half-ring blades, and the two sides of the circular knife seat are in contact with the annular knife seat and the pressure ring respectively; The annular knife seat, circular knife and pressure ring are provided with multiple groups of axial screw holes with corresponding positions, and the three are connected by multiple axial screws; the annular knife seat is also provided with multiple radial screw holes, which are detachably connected to the rotating shaft through multiple radial screws.

2. The easily replaceable cutting device according to claim 1, characterized in that: A fixed key is arranged on the rotating shaft, and a key slot adapted to the fixed key is opened on the inner wall of the annular knife seat.

3. The easily replaceable cutting device according to claim 1, characterized in that: The annular blade seat and the pressure ring are both provided with four axial screw holes in a circumferential array, and correspondingly, each of the semi-annular blades is provided with two axial screw holes.

4. The easily replaceable cutting device according to claim 1, characterized in that: One side of the annular knife seat is provided with two positioning protrusions in a circumferential array, and one side of the pressure ring is provided with two positioning grooves adapted to the positioning protrusions in a circumferential array. Correspondingly, each of the semi-ring blades is provided with a positioning hole adapted to the positioning protrusion.

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