A hollow air suction rotary knife setting device

Abstract

The present invention relates to a hollow air suction rotary knife adjuster, which is composed of an adjuster jacket, a bearing assembly, an end cover, a locking nut, a rotary adjustment handle, a sealing ring, a rotary handle jacket, a rotary elbow joint and a 90-degree elbow. The bearing assembly is installed inside the adjuster jacket, and the end cover is installed at the rear end of the adjuster jacket by screws. The front end of the rotary adjustment handle is threadedly connected in the end cover by a locking nut, and the rear end of the rotary adjustment handle is connected to the rotary handle jacket by a sealing ring. The rear part of the rotary handle jacket is threadedly connected with a rotary elbow joint, and an elastic retaining ring is arranged between the rear end of the rotary handle jacket and the rotary elbow joint, and a 90-degree elbow is connected to the rear part of the rotary elbow joint. The present invention is scientifically and reasonably designed, and has the advantages of smooth waste discharge, reduced scrap rate, concentric installation of the knife body, no interference with the connected waste discharge pipeline, reliable adjustment, and easy implementation.

Description

Technical Field

[0001] The invention belongs to the field of die-cutting processing equipment and relates to a knife adjuster, in particular to a hollow air-suction rotary knife adjuster. Background Art

[0002] Die-cutting tools are an important part of the rotary die-cutting machine. Generally, according to the needs of the die-cutting products, multiple groups are set on the die-cutting machine to achieve continuous multi-pass die-cutting processing. When working, a bottom roller is installed under each set of die-cutting tools. The two are synchronously rotated in opposite directions through gear transmission to complete the die-cutting of the raw materials. In order to ensure the accuracy of the die-cutting products, the relative position of each tool needs to be adjusted by the tool adjuster during the die-cutting process to achieve accurate coordination with the die-cutting position in the previous die-cutting process.

[0003] However, in the specific use process, the existing knife adjusters still have the following deficiencies: 1. The aperture of the knife adjuster is small, and there is insufficient ventilation, which leads to poor waste discharge of the product and an increase in the defective product rate; 2. When installing the knife body, a simple bearing end face method is used for connection and fixation. The inside and outside of the knife body are not concentric, resulting in dimensional deviation and an increase in the dimensional defective rate; 3. The existing knife adjuster only has a vent hole at its port, and the waste discharge pipe is directly inserted into the hole. In this way, when adjusting the size, the waste discharge pipe will rotate with it, causing the waste discharge pipe to be skewed, and the external force of the skewed waste discharge pipe plus long-term vibration will cause the adjusted handle position to shift, and the size will change without monitoring, resulting in poor product size. Summary of the invention

[0004] The purpose of the present invention is to provide a hollow suction rotary knife adjuster with scientific and reasonable structural design, smooth waste discharge, reduced scrap rate, concentric knife body installation, no interference with the connected waste discharge pipeline, reliable adjustment and easy implementation.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] A hollow air suction rotary knife adjuster, characterized in that it consists of an adjuster jacket, a bearing assembly, an end cover, a locking nut, a rotary adjusting handle, a sealing ring, a rotary handle jacket, a rotary elbow joint and a 90-degree elbow. The bearing assembly is installed inside the adjuster jacket, and the end cover is installed at the rear end of the adjuster jacket by screws. The front end of the rotary adjusting handle is threadedly connected in the end cover by a locking nut, the rear end of the rotary adjusting handle is connected to the rotary handle jacket by a sealing ring, the rear part of the rotary handle jacket is threadedly connected to the rotary elbow joint, an elastic retaining ring is arranged between the rear end of the rotary handle jacket and the rotary elbow joint, and a 90-degree elbow is connected to the rear part of the rotary elbow joint.

[0007] Moreover, the bearing assembly is composed of an oil-containing bearing, a concave-convex washer and a thrust bearing. Concave-convex washers with convex surfaces facing outward are respectively installed at both ends of the thrust bearing. An oil-containing bearing installed in the knife adjuster housing is arranged in front of the concave-convex washer located at the front end, and an end cover installed on the end face of the knife adjuster housing is arranged behind the concave-convex washer located at the rear end.

[0008] Moreover, the rotary adjustment handle is composed of a cylinder body, a locking nut mounting portion, a rotating sleeve mounting portion and a knurled handle adjustment portion. The locking nut mounting portion, the knurled handle adjustment portion and the rotating sleeve mounting portion are sequentially arranged on the cylinder body from front to back. The locking nut mounting portion is a threaded structure arranged on the outer wall of the cylinder body, and the knurled handle adjustment portion is a circle of adjustment bosses protruding from the middle of the cylinder body. A sealing groove for clamping a sealing ring is arranged on the outer edge of the rear end face of the adjustment boss, and a circle of retaining ring mounting grooves for clamping an elastic retaining ring are arranged on the rear cylinder of the rotating sleeve mounting portion.

[0009] Moreover, the rotary handle outer shell is composed of a sealed bearing, a spacer ring and a handle outer shell body, a spacer ring is coaxially installed inside the handle outer shell body, and sealed bearings are installed inside the handle outer shell body at the front and rear ends of the spacer ring; the handle outer shell body is a structure with a thick front end and a thin rear end, a circle of clamping grooves is provided between the thicker structure and the thinner structure, one end of the thicker structure is butt-jointed to the rear end face of the knurled handle adjustment part through a sealing ring, and one end of the thinner structure is threadedly connected to the rotary elbow joint.

[0010] Moreover, the rotary elbow joint is composed of a tube body, a handle outer shell connecting part and a elbow connecting part. The handle outer shell connecting part and the elbow connecting part are arranged front and back on the inner wall of the tube body. A circle of clamping protrusions matching the clamping groove are arranged at the front end of the handle outer shell connecting part on the inner wall of the tube body.

[0011] The advantages and beneficial effects of the present invention are:

[0012] 1. This hollow air-suction rotary knife adjuster adopts the design of large-diameter air-suction channel with oil-containing bearing. Before this design was adopted, ordinary knife adjusters generally used ordinary ball bearings with thicker bearing walls, which reduced the inner diameter of the bearing within the limited space of the knife adjuster, thus affecting the diameter of the tool shaft head in a different direction. After adopting this solution, the original diameter of the caliber of 35mm was adjusted to 40mm, the diameter of the caliber was increased, the internal air-suction channel was increased, the problem of insufficient air intake was effectively solved, and the waste discharge effect was improved.

[0013] 2. This hollow air suction rotary knife adjuster adopts the scheme of designing concave and convex gaskets at the front and rear ends of the thrust bearing. Before this scheme is adopted, the diameter side of the tool and the diameter side of the knife adjuster handle are directly pressed against the surface of the thrust bearing in the form of a plane. Since the surface of the thrust bearing is a plane, there will be a certain gap between the tool shaft head and the bearing. When the planes are in contact, the center of the knife adjuster handle and the center of the shaft head will have different degrees of eccentricity due to the gap problem. This situation will cause poor size caused by the tilt of the product piece and difficult to debug. After adopting this scheme, the concave and convex gasket will be tangentially contacted with the inner hole of the shaft head on one side, and tangentially contacted with the inner hole on the handle side on the other side. At this time, both sides are connected by the tangent of the conical surface. During operation, it can not only ensure the concentricity, but also not affect the normal suction of waste, avoiding the production of defective products.

[0014] 3. This hollow suction rotary knife adjuster adopts a double-headed rotary adjustment handle with a hollow structure. Before this solution is adopted, the pipe needs to be changed from thick to thin through a reducer, and then directly inserted into one end of the handle. At this time, since the suction pipe directly inserted into the inside is thinner, the gas volume is reduced, and it does not have a rotation function. When adjusting the size, it is often difficult to adjust due to external forces of the pipeline. It also often happens that the pipeline falls off during the adjustment process and needs to be reinstalled. After adopting this solution, due to the double-head design, the threaded end is the end for adjusting the size, and one end of the rotating sleeve mounting part is the end for installing the bearing sleeve. After installation, it is rotated. In this way, when adjusting the size, the outer sleeve rotates due to the rotation of the bearing, and the pipes connected outside the outer sleeve will not rotate accordingly, effectively realizing that the size adjustment is not interfered by the pipeline and the pipeline diameter will not become thinner, ensuring effective suction while improving operability.

[0015] 4. This hollow suction rotary knife adjuster adopts a structure in which the rotary elbow joint is threadedly installed on the rotary handle jacket. Before this solution is adopted, first of all, it does not have the function of both installing the elbow and freely rotating. Before the split type is adopted, it is impossible to effectively fix the rotary fixed joint after installation, because the pipe insertion has a certain depth. When it is designed as an integrated structure, it is impossible to install a spring retaining ring for effective fixation. Therefore, this fixed joint is designed as an internal and external threaded split rotary elbow fixed joint, so that one side can effectively connect to the outside of the knife adjuster handle and realize the rotation function when the pipe is inserted from the outside. The spring retaining ring can also be used to connect and fix the split joint to the knife adjuster handle side at the interface. This design scheme will not affect the thickness of the ventilation pipe, nor the rotation, and it is convenient for installation and operation while realizing the connection function.

[0016] 5. This hollow suction rotary knife adjuster adopts a triple-sealed rotary connection design. Before this solution is adopted, since the outer sleeve rotates and the inner sleeve is fixed, if a connection without a gap is required, the outer sleeve and the inner sleeve need to be sealed. Pure mechanical sealing is not feasible because mechanical sealing will cause the outer sleeve and the inner sleeve to be tightly connected. Although it is sealed, it loses the function of rotation. Therefore, the outer sleeve and the inner sleeve are connected and fixed separately. At this time, the bearing between the inner sleeve and the outer sleeve will have a poor seal, resulting in air leakage. The air leakage will affect the suction force and thus affect the waste discharge rate. This design adopts the "triple-sealed rotary connection design", which means that the bearing uses a sealed bearing, but at this time it cannot completely guarantee good airtightness. A sealing groove is provided at the rotating part. After all the installations are completed, a sealing ring is placed here. When there is a poor seal, due to the generation of suction, the sealing ring will be affected by the suction and become tighter and tighter, thereby achieving good airtightness. The triple-sealed solution ensures effective suction, which effectively improves the product yield.

[0017] 6. The present invention is scientifically and reasonably designed, has the advantages of smooth waste discharge, reduced scrap rate, concentric installation of the knife body, no interference with the connected waste discharge pipeline, reliable adjustment, and easy implementation. It is a hollow suction rotary knife adjuster with high innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 is a cross-sectional view of the present invention;

[0020] Figure 3 An exploded view of the present invention;

[0021] Figure 4 is a cross-sectional view of the rotary adjustment handle of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the rotary handle cover of the present invention;

[0023] Figure 6 A schematic diagram of the structure of the waste discharge cutter body of the present invention;

[0024] Figure 7 It is a schematic diagram of the application of the present invention.

[0025] Description of reference numerals:

[0026] 1-adjuster jacket, 2-rotating elbow joint, 3-90 degree elbow, 4-oil bearing, 5-rotating adjustment handle, 6-thrust bearing, 7-end cover, 8-locking nut, 9-knurled handle adjustment part, 10-sealing ring, 11-rotating handle jacket, 12-sealed bearing, 13-spacer retaining ring, 14-card slot, 15-locking nut mounting part, 16-concave and convex washer, 17-rotating sleeve mounting part, 18-elastic retaining ring, 19-sealing groove, 20-retaining ring mounting groove, A-knife adjuster, B-waste discharge knife body, C-spindle, D-die-cutting material, E-waste pipe, F-suction pump. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0028] A hollow air-suction rotary knife adjuster, the innovation of which lies in: consisting of an adjuster jacket 1, a bearing assembly, an end cover 7, a locking nut 8, a rotary adjusting handle 5, a sealing ring 10, a rotary handle jacket 11, a rotary elbow joint 2 and a 90-degree elbow 3, wherein the bearing assembly is installed inside the adjuster jacket, the end cover is installed at the rear end of the adjuster jacket by screws, the front end of the rotary adjusting handle is threadedly connected in the end cover by a locking nut, the rear end of the rotary adjusting handle is connected to the rotary handle jacket by a sealing ring, the rear part of the rotary handle jacket is threadedly connected to the rotary elbow joint, an elastic retaining ring 18 is arranged between the rear end of the rotary handle jacket and the rotary elbow joint, and a 90-degree elbow is connected to the rear part of the rotary elbow joint.

[0029] The bearing assembly is composed of an oil-containing bearing 4, a concave-convex washer 16 and a thrust bearing 6. Concave-convex washers with convex surfaces facing outward are respectively installed at both ends of the thrust bearing. An oil-containing bearing installed in the knife adjuster housing is arranged in front of the concave-convex washer located at the front end, and an end cover installed on the end face of the knife adjuster housing is arranged behind the concave-convex washer located at the rear end.

[0030] The rotary adjustment handle is composed of a cylinder, a locking nut mounting portion 15, a rotating sleeve mounting portion 17 and a knurled handle adjustment portion 9. A locking nut mounting portion, a knurled handle adjustment portion and a rotating sleeve mounting portion are sequentially arranged on the cylinder from front to back. The locking nut mounting portion is a threaded structure arranged on the outer wall of the cylinder. The knurled handle adjustment portion is a circle of adjustment bosses protruding from the middle of the cylinder. A semicircular sealing groove 19 for clamping a sealing ring is arranged on the outer edge of the rear end face of the adjustment boss. A circle of retaining ring mounting grooves 20 for clamping an elastic retaining ring is arranged on the rear cylinder of the rotating sleeve mounting portion.

[0031] The rotary handle outer sleeve is composed of a sealed bearing 12, a spacer ring 13 and a handle outer sleeve body, a spacer ring is coaxially installed inside the handle outer sleeve body, and sealed bearings are installed inside the handle outer sleeve body at the front and rear ends of the spacer ring; the handle outer sleeve body is a structure with a thick front end and a thin rear end, and a circle of clamping grooves 14 is provided between the thicker structure and the thinner structure. One end of the thicker structure is butt-jointed to the rear end face of the knurled handle adjustment part through a sealing ring, and one end of the thinner structure is threadedly connected to a rotary elbow joint. A semicircular sealing groove is provided at the outer edge of the front end face of the handle outer sleeve body, and a sealing ring is provided between the semicircular sealing groove and the semicircular sealing groove of the rotary adjustment handle to avoid air leakage at the external connection of the knife adjuster.

[0032] The rotary elbow joint is composed of a pipe body, a handle outer body connecting part and a elbow connecting part. The handle outer body connecting part and the elbow connecting part are arranged front and back on the inner wall of the pipe body. A circle of clamping protrusions matching the clamping groove is arranged at the front end of the handle outer body connecting part on the inner wall of the pipe body.

[0033] During installation, first assemble the knife adjuster A according to the drawing; then connect the assembled knife adjuster to the assembled waste discharge knife body B; laminate the die-cutting material D to be prepared for die-cutting on the spindle C; install the knife adjuster connected with the waste discharge knife body on the spindle to prepare the die-cutting material; connect the waste pipe E to the 90-degree elbow of the knife adjuster; connect the other end of the waste pipe to the air inlet end of the suction pump F; after the installation is completed, turn on the suction pump switch to absorb the waste while waiting for die-cutting.

[0034] Working principle:

[0035] 1. When the work starts, the waste cutter body will first cut the material, and the part that needs to be left is the finished product part, which will be moved to the next workstation for processing according to the rotation of the spindle;

[0036] 2. The various shapes of hole waste that need to be discharged in the middle enter the knife cavity through the blade of the waste discharge knife;

[0037] 3. Through the suction of the suction pump, the waste passes through the knife adjuster and the waste pipe in turn and enters the storage tank of the suction pump;

[0038] 4. Waste discharge is now completed.

[0039] During the debugging process, due to the change of product size, the product size needs to be adjusted. At this time, adjust the locking nut and the rotary adjustment handle of the knife adjuster as follows:

[0040] First, loosen the locking nut, and then adjust the rotary adjustment handle according to the size requirements. After the adjustment is completed, lock the locking nut and restore it. While adjusting the rotary adjustment handle, since the knife adjuster is also provided with a rotary handle jacket, a sealed bearing is installed inside the rotary handle jacket. When the rotary adjustment handle is rotated, the rotary handle jacket will slide, which can effectively ensure that the 90-degree elbow will not rotate due to the rotating handle.

[0041] The knife adjuster can not only effectively connect the waste discharge knife and the suction pump, but also can perform axial size adjustment, and can ensure that the pipeline is not twisted and deformed while adjusting the size, which is convenient and practical.

[0042] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A hollow suction rotary knife setting device, characterized in that: It consists of an adjuster jacket, a bearing assembly, an end cover, a locking nut, a rotary adjusting handle, a sealing ring, a rotary handle jacket, a rotary elbow joint and a 90-degree elbow. The bearing assembly is installed inside the adjuster jacket, and the end cover is installed at the rear end of the adjuster jacket by screws. The front end of the rotary adjusting handle is threadedly connected in the end cover by a locking nut, the rear end of the rotary adjusting handle is connected to the rotary handle jacket by a sealing ring, the rear part of the rotary handle jacket is threadedly connected to the rotary elbow joint, an elastic retaining ring is arranged between the rear end of the rotary handle jacket and the rotary elbow joint, and the rear part of the rotary elbow joint is connected to a 90-degree elbow.

2. A hollow air suction rotary knife setting device according to claim 1, characterized in that: The bearing assembly is composed of an oil-containing bearing, a concave-convex washer and a thrust bearing. Concave-convex washers with convex surfaces facing outward are respectively installed at both ends of the thrust bearing. An oil-containing bearing installed in the knife adjuster outer sleeve is arranged in front of the concave-convex washer located at the front end, and an end cover installed on the end surface of the knife adjuster outer sleeve is arranged behind the concave-convex washer located at the rear end.

3. The hollow air suction rotary knife setting device according to claim 1, characterized in that: The rotary adjustment handle is composed of a cylinder, a locking nut mounting portion, a rotating sleeve mounting portion and a knurled handle adjustment portion. The locking nut mounting portion, the knurled handle adjustment portion and the rotating sleeve mounting portion are sequentially arranged on the cylinder from front to back. The locking nut mounting portion is a threaded structure arranged on the outer wall of the cylinder. The knurled handle adjustment portion is a circle of adjustment bosses protruding from the middle of the cylinder. A sealing groove for clamping a sealing ring is arranged on the outer edge of the rear end face of the adjustment boss. A circle of retaining ring mounting grooves for clamping an elastic retaining ring is arranged on the rear cylinder of the rotating sleeve mounting portion.

4. The hollow air suction rotary knife setting device according to claim 1, characterized in that: The rotary handle outer shell is composed of a sealed bearing, a spacer ring and a handle outer shell body. A spacer ring is coaxially installed inside the handle outer shell body, and sealed bearings are installed inside the handle outer shell body at the front and rear ends of the spacer ring. The handle outer shell body is a structure with a thick front end and a thin rear end. A circle of clamping grooves is provided between the thicker structure and the thinner structure. One end of the thicker structure is butt-jointed to the rear end surface of the knurled handle adjustment part through a sealing ring, and one end of the thinner structure is threadedly connected to the rotary elbow joint.

5. The hollow air suction rotary knife setting device according to claim 4, characterized in that: The rotary elbow joint is composed of a pipe body, a handle outer body connecting part and a elbow connecting part. The handle outer body connecting part and the elbow connecting part are arranged front and back on the inner wall of the pipe body. A circle of clamping protrusions matching the clamping groove is arranged at the front end of the handle outer body connecting part on the inner wall of the pipe body.

Images