A conveniently adjustable heavy-duty edge tearing knife holder and its working principle

Abstract

The present invention relates to a heavy-duty edge-tearing tool holder which is easy to adjust and its working principle, characterized in that: a tool holder head is hingedly connected to the head of the tool holder body, a shaft-holding assembly is hingedly connected to the tail, a cylinder is fixed at the upper end of the head, a piston rod of which is hingedly connected to the tool holder head, the cylinder is connected to a compressed air system through an air pipe, the compressed air system also includes an air pressure regulating device, a limit screw is also provided at the upper end of the head of the tool holder body, which is pressed against the tail of the tool holder head, the limit screw is prevented from loosening by an elastic pressure angle, the tail of the cutter head body of the tool holder head is hinged to the tool holder body, a knife column is installed at the head through a threaded through hole, a notch and a locking screw are provided at the upper end of the threaded through hole, and an edge-tearing knife is installed on the knife column; the edge-tearing tool holder with this structure is very convenient, fast and accurate in terms of rough positioning of the tool holder, precise positioning of the edge-tearing knife, adjustment of the gap between the edge-tearing knife and the adjustment of the cutting pressure, and solves the technical problem of conveniently adjusting the tool position and the cutting pressure during the production of printing paper.

Description

Technical Field

[0001] The invention relates to printing paper processing equipment, in particular to a heavy-duty edge-tearing knife frame which is convenient to adjust and its working principle. Background Art

[0002] Computer printing paper with conveying holes often needs to be cut with a dotted line knife at the conveying hole edge to make it easier for customers to tear off the conveying holes on both sides after printing. This is especially true for multi-part carbonless copy printing paper. After tearing off the conveying hole part, the multi-part will naturally separate and be easily distributed in layers. This kind of tearing edge is cut by a circular dotted line knife in production and processing. The dotted line knife is installed on a tearing edge knife holder. Generally, one knife is used for each tearing edge, and the tearing edge knife holder is installed on a fixed circular mounting shaft. The cutting principle of this kind of knife is: a circular bottom knife roller with a smooth and hard surface is used. The paper is wound around the surface of the bottom knife roller for a section. The bottom knife roller has an active rotating power to drive the continuous paper to run. The knife edge is pressed on the paper and gives the knife a certain elastic pressure. The knife uses this elastic pressure to cut the printing paper. The dotted line blade part can cut the paper, and the notch part keeps the paper from being cut, thus forming a tearing edge line with alternating virtual and real sides. The elastic pressure of the existing tool holder is realized by a screw-fastened pressure spring and is manually adjusted. This adjustment method has no specific value, and the pressure depends on the operator's experience and feel. It often takes multiple adjustments to achieve the ideal state, which is very inconvenient. At the same time, the lateral positioning of the tool can only be adjusted by adjusting the installation position of the tearing tool holder on the fixed installation shaft of the main equipment. It also takes multiple adjustments to the relative position of the product and the tool holder to achieve the ideal state, which is also very inconvenient.

[0003] It is important to note that: 1. This specification uses the term "hinge" as the connection method for parts. Hinge means that two parts are connected using a cylindrical pin, the cylindrical pin is fixed to one of the parts, and the other part can rotate around the cylindrical pin. 2. The "fork" mentioned in this specification refers to the end of the part with the middle removed and the two sides left in a fork shape (the other matching part removes the two sides and keeps the middle part, which can rotate relatively freely after hinged installation, and will not be described in the text). 3. Regarding the description of direction, according to the direction of the main view of the drawing, the left side of the figure is the head, the right side of the figure is the tail, the top of the figure is the top, and the bottom of the figure is the bottom. Summary of the invention

[0004] The purpose of the present invention is to provide a heavy-duty tearing edge knife holder which is easy to adjust and its working principle, so as to solve the technical problem of being able to easily adjust the knife position and cutting pressure during printing paper production.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heavy-duty tearing edge tool holder that is easy to adjust, including a tool holder body, a long fork at the lower end of the head of the tool holder body, and a tool holder head is hinged in the long fork with a cylindrical pin I; the tail of the tool holder body is in an inner arc right angle shape, a short fork is opened at the tail end, and a right-angle fork is opened at the lower end, and a shaft holding component is hinged in the right-angle fork with a cylindrical pin II, and the shaft holding component includes a connecting block, one end of the connecting block is hinged to the right-angle fork, and the other end is hinged to a transition fork with a cylindrical pin III, and the upper end of the transition fork is fixed in the short fork by a bolt and a large gasket.

[0006] A cylinder is fixed on the upper end of the tool holder body head, and the piston rod of the cylinder is hinged on the tool holder head through a through hole on the tool holder body; the cylinder is connected to the compressed air system through an air pipe, and the compressed air system also includes an air pressure regulating device.

[0007] There is also a limit screw behind the cylinder at the upper end of the tool holder head. The lower half of the limit screw is installed on the tool holder body through threads, and the lower plane is against the upper plane of the tail of the tool holder head; the upper half of the limit screw is cylindrical with straight grooves on the surface, and there is an elastic pressure angle next to it; the elastic pressure angle is composed of an upper foot and a lower foot to form a right-angle structure, the upper foot presses out an edge from the middle and embeds into the straight groove on the limit screw, and the lower foot is fixed to the tool holder body with two screws.

[0008] The tool holder head includes a tool head body, the tail of the tool head body is embedded in the long fork mouth and hinged to the tool holder body, a tool column is installed on the head through a threaded through hole, a notch is axially opened on the upper end of the threaded through hole, and a locking screw is installed in the middle of the upper end of the head of the tool head body in a direction perpendicular to the notch through a threaded connection.

[0009] One end of the knife-mounting column is a knurled cylinder, and the other end is provided with a shaft neck, on which a tearing edge knife is installed, and a retaining spring is installed on the side of the tearing edge knife.

[0010] The elastic pressure angle is made of spring steel.

[0011] The working principle of the above-mentioned easy-to-adjust heavy-duty tearing edge tool holder is as follows: Rough positioning of the tool holder: Place the tail of the tool holder body on the mounting shaft of the main equipment, preliminarily find the installation position according to the requirements of the product tearing edge line position, pass the connecting block, transition fork, bolts, and large gasket of the shaft holding assembly around the mounting shaft and lock the bolts in the short fork mouth.

[0012] Precise positioning of the tearing edge knife: manually rotate the knurled cylinder of the knife column to accurately adjust the lateral position of the tearing edge knife, and then lock the locking screw at the upper end of the head of the cutter head body to shrink the upper end of the threaded through hole and press the knife column to keep the lateral position of the entire tearing edge knife unchanged.

[0013] Adjustment of the gap of the edge tearing knife: After installing the edge tearing knife on the knife mounting column, make the blade contact with the bottom knife roller of the main equipment without gap, adjust the position of the limit screw so that its lower end just touches the upper plane of the tail of the tool holder head; adjust the position of the elastic pressure angle so that the edge of the upper foot is embedded in the straight groove on the limit screw, and fix the lower foot to the tool holder body with two screws.

[0014] Adjustment of the cutting pressure of the edge tearing knife: The cylinder fixed on the upper end of the head of the tool holder is connected to the compressed air system through an air pipe. The compressed air system includes an air pressure regulating device. The pressure of the cylinder is set by the air pressure regulating device. The pressure is transmitted to the head of the tool holder through the piston rod of the cylinder, and then transmitted to the edge tearing knife. The edge tearing knife can obtain a stable cutting pressure.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the heavy-duty edge-tearing tool holder of the present invention which is easy to adjust has a tool holder head hingedly connected by a cylindrical pin I in the long fork at the lower end of the tool holder head; the tool holder head with this structure can rotate on the tool holder head around the cylindrical pin I, so that when the bottom knife roller or the product causes the edge-tearing knife to jump, elastic pressure can be used to protect the blade from damage; a shaft-holding assembly is hingedly connected by a cylindrical pin II in the right-angle fork at the tail of the tool holder body; when installing and using, the tail of the tool holder body can be placed on the mounting shaft of the main equipment, the installation position can be preliminarily found, the connecting block, transition fork, bolts, and large gasket of the shaft-holding assembly can be passed around the mounting shaft and the bolts can be locked and fixed in the short fork; the installation is convenient, and it is also convenient to slightly loosen the bolts for preliminary positioning and adjustment. A cylinder is fixed on the upper end of the tool holder head, and the piston rod of the cylinder is hinged on the tool holder head through the through hole on the tool holder body. The cylinder is connected to a compressed air system through an air pipe, and the compressed air system also includes an air pressure regulating device. This structure sets the pressure of the cylinder through the air pressure regulating device, and transmits the pressure to the tool holder head through the piston rod of the cylinder, and then to the tearing edge knife, so that the tearing edge knife can obtain a stable cutting pressure. As long as the air pressure is set, there is no need to adjust the pressure manually, and the adjustment is convenient and fast, and the pressure is stable and reliable. The structure of the limit screw and the elastic pressure angle at the upper end of the tool holder head can accurately adjust and limit the upper and lower positions of the tool holder head through the limit screw, keep the blade in contact with the bottom knife roller, and use the elastic pressure angle to effectively prevent the limit screw from loosening during operation. The tail of the tool head of the tool holder is embedded in the long fork and hinged with the tool holder body. The head is installed with a tool post through a threaded through hole. The upper end of the threaded through hole is axially opened with a notch and a locking screw. This method can be used to adjust the lateral position to obtain a smaller displacement, so that fine adjustment can be made. The adjustment is also very convenient. At the same time, the notch and locking screw locking principle can effectively hold the tool post tightly, thereby maintaining the lateral position of the tearing knife during operation. The knurled cylinder of the tool post is very suitable for manual operation.

[0016] To sum up, this easy-to-adjust heavy-duty tearing knife holder is very convenient, fast and accurate in terms of rough positioning of the knife holder, precise positioning of the tearing knife, adjustment of the tearing knife gap, and cutting pressure adjustment. It solves the technical problem of conveniently adjusting the tool position and cutting pressure during printing paper production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a front view of the assembly structure of an embodiment of the present invention.

[0018] Attached Figure 2 It is a top view of the assembly structure of an embodiment of the present invention.

[0019] Explanation of the symbols in the accompanying drawings: 1—tool holder body; 2—cylindrical pin I; 3—tool holder head; 4—cylindrical pin II; 5—shaft holding assembly; 6—cylinder; 7—limit screw; 8—elastic pressure angle; 9—edge tearing knife; 10—installation shaft. DETAILED DESCRIPTION

[0020] In order to make the implementation objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below in conjunction with the accompanying drawings.

[0021] As attached Figure 1 and Figure 2 As shown, the heavy-duty tearing edge tool holder which is easy to adjust of the present invention comprises a tool holder body 1, wherein the lower end of the head of the tool holder body 1 has a long fork 11, in which a tool holder head 3 is hinged by a cylindrical pin Ⅰ2; the tail of the tool holder body 1 is in an inner arc right angle shape, the tail end has a short fork 12, the lower end has a right angle fork 13, in which a shaft holding component 5 is hinged by a cylindrical pin Ⅱ4, the shaft holding component 5 comprises a connecting block 51, one end of the connecting block 51 is hinged to the right angle fork 13, and the other end is hinged to a transition fork 53 by a cylindrical pin Ⅲ52, and the upper end of the transition fork 53 is fixed in the short fork 12 by a bolt 54 and a large gasket 55. The tool holder head 3 of this structure can rotate on the tool holder head 3 around the cylindrical pin Ⅰ2, so that the elastic pressure can be used to protect the blade from damage when the bottom knife roller or the product causes the tearing knife 9 to jump. At the same time, when installing and using, the tail of the tool holder body 1 can be placed on the main equipment installation shaft 10, and the installation position can be preliminarily found. The connecting block 51, transition fork 53, bolt 54, and large gasket 55 of the shaft holding assembly 5 are passed around the installation shaft 10 and the bolt 54 is locked and fixed in the short fork mouth 12. It is easy to install and it is also convenient to slightly loosen the bolt 54 for preliminary positioning and adjustment.

[0022] A cylinder 6 is fixed to the upper end of the head of the tool holder body 1, and the piston rod of the cylinder 6 is hinged on the tool holder head 3 through the through hole on the tool holder body 1; the cylinder 6 is connected to a compressed air system (not shown in the example figure) through an air pipe, and the compressed air system also includes an air pressure regulating device. The pressure of the cylinder 6 can be set by the air pressure regulating device, and the pressure is transmitted to the tool holder head 3 through the piston rod of the cylinder 6, and then transmitted to the tearing knife 9, so that the tearing knife 9 can obtain a stable cutting pressure. This method of applying cutting pressure is more convenient than the traditional spring pressure adjustment, and the pressure value can be digitized. Each adjustment only needs to press the set number. In actual operation, the corresponding relationship between the number of product layers and the pressure value can be summarized, and the adjustment can be made quickly, which changes the previous state of adjusting the spring pressure by feel and experience.

[0023] There is a limit screw 7 behind the cylinder 6 at the upper end of the head of the tool holder body 1. The lower half of the limit screw 7 is installed on the tool holder body 1 through threads, and the lower plane is against the upper plane of the tail of the tool holder head 3; the upper half of the limit screw 7 is a cylinder with straight grooves on the surface, and there is an elastic pressure angle 8 next to it; the elastic pressure angle 8 is made of spring steel; the elastic pressure angle 8 is composed of an upper foot and a lower foot to form a right-angle structure, the upper foot presses out an edge from the middle and is embedded in the straight groove on the limit screw 7, and the lower foot is fixed to the tool holder body 1 with two screws. Through this limit screw 7, the upper and lower positions of the tool holder head 3 are accurately adjusted and limited, the blade is kept in contact with the bottom knife roller, and the elastic pressure angle 8 is used to effectively prevent the limit screw 7 from loosening during operation. This anti-loosening technology is very suitable for the anti-loosening of screws that need to be adjusted frequently, and it is simple to operate and can be adjusted without the help of tools, with a good anti-loosening effect.

[0024] The tool holder head 3 includes a tool head body 31, the tail of the tool head body 31 is embedded in the long fork 11 and is hinged with the tool holder body 1, and a tool column 33 is installed on the head through a threaded through hole 32, and a notch 34 is axially opened at the upper end of the threaded through hole 32. A locking screw 35 is installed in the middle of the upper end of the head of the tool head body 31 in a vertical direction to the notch 34 through a threaded connection. The thread matching the threaded through hole 32 and the tool column 33 here can adopt fine pitch threads. By adopting this method, a smaller displacement can be obtained by adjusting the lateral position, so that fine adjustment can be made, and the adjustment is also very convenient. At the same time, the locking principle of the notch 34 and the locking screw 35 can effectively hold the tool column 33 tightly, so as to maintain the lateral position of the tearing knife 9 during operation.

[0025] One end of the knife column 33 is a knurled cylinder, and the other end has a journal, on which a tearing knife 9 is installed, and a retaining spring 36 is installed on the side of the tearing knife 9. The knurled cylinder is very suitable for manual operation, and the force is applied without slipping. The size of the journal matches the inner hole of the bearing of the tearing knife 9. After installation, the retaining spring 36 is used for limiting. Of course, it can also be limited by a thread plus a nut.

[0026] The working principle of the above-mentioned easy-to-adjust heavy-duty tearing edge tool holder is as follows: rough positioning of the tool holder: place the tail of the tool holder body 1 on the main equipment mounting shaft 10, preliminarily find the installation position according to the requirements of the product tearing edge line position, pass the connecting block 51, transition fork 53, bolt 54, and large gasket 55 of the shaft holding assembly 5 around the mounting shaft 10 and lock the bolt 54 in the short fork mouth 12.

[0027] Precise positioning of the tearing knife: manually rotate the knurled cylinder of the knife column 33 to accurately adjust the lateral position of the tearing knife 9, and then lock the locking screw 35 at the upper end of the head of the cutter head body 31 to shrink the upper end of the threaded through hole 32 and press the knife column 33 to keep the lateral position of the entire tearing knife 9 unchanged.

[0028] Adjustment of the gap of the edge tearing knife: After installing the edge tearing knife 9 on the knife column 33, make the blade contact with the bottom knife roller of the main equipment without gap, adjust the position of the limit screw 7 so that its lower end just touches the upper plane of the tail of the tool holder head 3; adjust the position of the elastic pressure angle 8 so that the edge of its upper foot is embedded in the straight groove on the limit screw 7, and fix the lower foot to the tool holder body 1 with two screws.

[0029] Adjustment of the cutting pressure of the edge tearing knife: The cylinder 6 fixed at the upper end of the head of the tool holder body 1 is connected to the compressed air system through an air pipe. The compressed air system includes an air pressure regulating device. The pressure of the cylinder 6 is set by the air pressure regulating device. The pressure is transmitted to the tool holder head 3 through the piston rod of the cylinder 6, and then transmitted to the edge tearing knife 9. The edge tearing knife 9 can obtain a stable cutting pressure.

[0030] The technical solution of the present invention uses common materials, is suitable for industrial production, and is feasible and practical.

Claims

1. A heavy-duty edge-tearing tool holder that is easy to adjust, comprising a tool holder body (1), characterized in that: The head of the tool holder body (1) has a long fork (11) at the lower end, and a tool holder head (3) is hinged in the long fork (11) by a cylindrical pin I (2); the tail of the tool holder body (1) is in an inner arc right angle shape, the tail end has a short fork (12), the lower end has a right angle fork (13), and the right angle fork (13) is hinged with a shaft holding component (5) by a cylindrical pin II (4), the shaft holding component (5) includes a connecting block (51), one end of the connecting block (51) is hinged to the right angle fork (13), and the other end is hinged to a transition fork (53) by a cylindrical pin III (52), and the upper end of the transition fork (53) is fixed in the short fork (12) by a bolt (54) and a large gasket (55); A cylinder (6) is fixed to the upper end of the head of the tool holder body (1), and a piston rod of the cylinder (6) is hinged to the tool holder head (3) through a through hole on the tool holder body (1); the cylinder (6) is connected to a compressed air system through an air pipe, and the compressed air system also includes an air pressure regulating device; A limit screw (7) is also provided at the rear side of the cylinder (6) at the upper end of the head of the tool holder body (1), and the lower half of the limit screw (7) is installed on the tool holder body (1) through a thread, and the lower plane is against the upper plane of the tail of the tool holder head (3); the upper half of the limit screw (7) is cylindrical with straight grooves on the surface, and there is an elastic pressure angle (8) next to it; the elastic pressure angle (8) is composed of an upper foot and a lower foot to form a right-angle structure, the upper foot is pressed from the middle to the straight groove on the limit screw (7), and the lower foot is fixed to the tool holder body (1) by two screws; The tool holder head (3) comprises a tool head body (31), the tail of the tool head body (31) is embedded in the long fork opening (11) and is hinged to the tool holder body (1), a tool column (33) is installed on the head through a threaded through hole (32), a notch (34) is axially opened at the upper end of the threaded through hole (32), and a locking screw (35) is installed in the middle of the upper end of the head of the tool head body (31) at a position perpendicular to the notch (34) through a threaded connection; One end of the knife-mounting column (33) is a knurled cylinder, and the other end has a journal, on which a tearing edge knife (9) is mounted, and a retaining spring (36) is mounted on the side of the tearing edge knife (9).

2. The easily adjustable heavy-duty edge tearing knife holder according to claim 1, characterized in that: The elastic pressure angle (8) is made of spring steel.

3. The easily adjustable heavy-duty edge tearing knife holder according to claim 1 or 2, characterized in that Its working method is: Rough positioning of the tool holder: the tail of the tool holder body (1) is placed on the main equipment installation shaft (10), and the installation position is initially determined according to the requirements of the position of the product tearing edge line. The connecting block (51), transition fork (53), bolt (54), and large gasket (55) of the shaft holding assembly (5) are passed around the installation shaft (10) and the bolt (54) is locked and fixed in the short fork opening (12); Precise positioning of the tearing edge knife: the lateral position of the tearing edge knife (9) is precisely adjusted by manually rotating the knurled cylinder of the knife mounting column (33), and then the locking screw (35) at the upper end of the head of the knife head body (31) is locked, so that the upper end of the threaded through hole (32) contracts and presses the knife mounting column (33) to keep the lateral position of the entire tearing edge knife (9) unchanged; Adjustment of the gap of the edge tearing knife: After the edge tearing knife (9) is installed on the knife mounting column (33), the blade is brought into contact with the bottom knife roller of the main equipment without gap, and the position of the limit screw (7) is adjusted so that its lower end just touches the upper plane of the tail of the knife holder head (3); the position of the elastic pressure angle (8) is adjusted so that the corner of the upper foot is embedded in the straight groove on the limit screw (7), and the lower foot is fixed to the knife holder body (1) with two screws; Adjustment of the cutting pressure of the edge tearing knife: The cylinder (6) fixed at the upper end of the head of the knife holder body (1) is connected to the compressed air system through an air pipe. The compressed air system includes an air pressure regulating device. The pressure of the cylinder (6) is set by the air pressure regulating device. The pressure is transmitted to the knife holder head (3) through the piston rod of the cylinder (6), and then transmitted to the edge tearing knife (9). The edge tearing knife (9) can obtain a stable cutting pressure.

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