CN203779551U - Paper cutting machine with rotating and switching blades - Google Patents

Abstract

The utility model discloses a trimmer of rotatory switching blade, its rotor level is transversely placed, the rotation axis perpendicular to bottom plate of rotor, a plurality of striae that supply the blade to stretch out downwards are seted up to the bottom surface of rotor, a spiral cover that is used for driving the rotor rotation is installed in the top rotation of knife box, the rotor is connected to the spiral cover, the inboard direction of rotation along the rotor in top of knife box is provided with one section promotion portion that is used for pushing out the knife box downwards with selected blade subassembly, the lower extreme of promotion portion surpasss the upper end that is in the blade subassembly of initial condition downwards, the spiral cover drives rotor and blade subassembly rotation to selected position when switching the blade, promotion portion promotes selected blade subassembly and moves downwards, the blade of blade subassembly stretches out from the rotor bottom surface. The utility model discloses simple structure, the spiral cover rotation through the top switches the blade, does not receive stopping of other parts, easy application of force, and the switching operation of blade is more convenient, does not need simultaneously to push down the knife box when cutting a sheet of paper, and it is more laborsaving to cut a sheet of paper, and it is lighter to cut a sheet of paper.

Description

Paper cutting machine with rotating and switching blades

technical field

The utility model relates to the technical field of paper cutters, in particular to a paper cutter with rotary switching blades.

Background technique

In the prior art, a paper cutting machine is used for paper cutting, including a bottom plate, a slide rail and a knife box sliding on the slide rail, a rotor is installed in the knife box, and a plurality of blades are fixed on the side of the rotor along the circumferential direction , there is a knob on the side of the knife box, the knob is connected to the rotor, the rotation axis of the rotor is parallel to the bottom plate, the rotor is driven to rotate by rotating the knob, and then the different upper blades are rotated to the right below the knife box, and the knife box uses the bottom blade Carry out paper cutting, as shown in the Chinese utility model patent with Chinese patent number "200820170538.7" and the patent name "multi-functional paper cutting combined cutter head" and Chinese patent number "200920265373.6", the patent name is "a kind of rotary switching blade As shown in the Chinese utility model patent of "paper cutting device", there are similar patents in Germany and Europe, such as the German patent with the patent number "DE202009016659U1" and the European patent with the patent number "EP2332702". It has the following disadvantages: 1. The height of the knife box is relatively large, and the height of the knife box is greater than the maximum diameter of the two blades. 2. It is inconvenient to operate. Since the knob is on the side of the knife box, the space at this position is very limited. When the user rotates the knob, he will be blocked by the bottom plate, and it is laborious and troublesome to switch the blades. 3. Paper cutting is laborious. The blade is usually retracted in the knife box. When cutting paper, it is necessary to press down on the knife box while sliding the knife box, so that the blade extends downwards out of the knife box, and then the paper can be cut. , cutting paper is inconvenient. Therefore it is necessary to improve it.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a paper cutter with rotary switchable blades, which has a simple structure, more convenient blade switching, and easier paper cutting.

In order to achieve the above object, the technical solution adopted in the utility model is:

A paper cutting machine for rotating and switching blades, comprising a bottom plate and a knife box, the bottom plate is provided with slide rails, the knife box is slidably installed on the slide rails, a rotor is rotatably installed in the knife box, and a plurality of blade assemblies are arranged along the rotor along its circumferential direction. The assembly is equipped with blades, which are stored in the rotor. The rotation axis of the rotor is perpendicular to the bottom plate. The bottom surface of the rotor is provided with a number of thin slots for the blades to protrude downward. The top of the knife box is rotated and installed with a rotating cover for driving the rotor to rotate. , the screw cover is connected to the rotor, and the inner side of the top of the knife box is provided with a section of pushing part for pushing the selected blade assembly downwards out of the knife box along the rotation direction of the rotor. At the upper end, when the blades are switched, the screw cap drives the rotor and the blade assembly to rotate to a selected position, the pushing part pushes the selected blade assembly to move downward, and the blades of the blade assembly protrude from the bottom surface of the rotor.

In a further technical solution, the middle part of the pushing part is provided with a stop section for keeping the blade in a downwardly protruding state, and a transition section is respectively arranged on both sides of the pushing part, and the two pushing sections are respectively connected to the stop section. On both sides, the transition section is an inclined part or an arc part.

In a further technical solution, a rotating column is provided at the center of the bottom of the screw cap, a circular hole is opened at the center of the rotating shaft of the rotor, and the rotating column is inserted into the circular hole of the rotating shaft.

In a further technical solution, several pushing columns are arranged on the side of the rotating column, and sockets are opened in the center of the pushing columns, and a number of pins are opened on the top of the rotor, and the pins are inserted into the sockets of the pushing columns.

In a further technical solution, the rotor is provided with several blade storage cavities along its circumference, the thin grooves communicate with the blade storage cavities, the blade assembly is movably placed in the blade storage cavity, and the rotor is provided with shrapnel for keeping the blade assembly springing up , the shrapnel presses upward against the blade assembly.

In a further technical solution, the blade assembly includes a knife shaft and a knife holder, the blade is fixed on a knife shaft, the two ends of the knife shaft are rotatably mounted on a knife holder, and the knife holder is movably placed in the blade storage cavity, and each blade is respectively arranged on the The plane of the rotating shaft of the rotor, after the rotating cover drives the rotor to rotate, the pushing part pushes the top of the tool holder of the selected blade assembly to push the blade downward.

In a further technical solution, the shrapnel includes an integrally punched ring portion and a plurality of elastic pins, the inner ends of each elastic pin are connected to the central fixing portion, and the outer ends of each elastic pin are upwardly pressed against the tool holder, and the round The ring part is fixed on the top of the rotating shaft, and the ring part is sheathed on the rotating column.

In a further technical solution, the tool holder has a top wall and two side walls for cooperating with the pushing part, the upper ends of the two side walls are respectively connected to the two sides of the top wall, and the lower ends of the two side walls are respectively provided with shafts. The two ends of the knife shaft are respectively movably inserted in the shaft holes on the two side walls. The outer end of the elastic pin is provided with a bending part for upwardly pressing against the tool holder. The bending part is arched upward, and the bending part is against the on the lower surface of the top wall.

In a further technical solution, the knife box includes a box body, a buckle foot is respectively arranged on both sides of the bottom of the box body, a slot is provided on the bottom plate, a slide rail is respectively arranged on both sides of the groove, and the two buckle feet slide respectively The slide rails are overlapped on both sides of the slot, and a large circular hole is opened on the top of the box body. The rotating column and the pushing column of the screw cap pass through the large circular hole to connect to the rotor. One of the wall edges of the large circular hole protrudes downwards. out the pushing part.

In a further technical solution, a rotor cavity is provided inside the box body, the shape of the rotor cavity is similar to a cylindrical shape, the shape of the rotor matches the rotor cavity, the rotor is movably accommodated in the rotor cavity, the bottom surface of the box body is open, and the rotor The bottom surface of the rotor is exposed from the bottom of the box body; the two sides of the slot are respectively formed with protective walls, the protective walls protrude from the bottom surface of the rotor, and the pushing part pushes down the selected blade, and the selected blade protrudes downward beyond the protective wall .

After adopting the above structure, the utility model has the advantages compared with the prior art: the utility model has a simple structure, and the blade can be switched by rotating the cover at the top without being blocked by other parts, and it is easy to apply force, and the switching operation of the blade It is more convenient, it is not necessary to press down on the knife box at the same time when cutting paper, which saves effort and makes paper cutting easier.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic structural view of a paper cutting machine of the present invention.

Fig. 2 is a partial sectional view of the utility model.

Fig. 3 is a partial enlarged view of A in Fig. 2 .

Fig. 4 is a schematic structural view of the knife case of the present invention.

Fig. 5 is an exploded schematic view of the knife case of the present invention.

Fig. 6 is a schematic diagram of the structure of the knife box of the present invention after the screw cover is hidden.

Fig. 7 is a structural schematic view of the knife box of the present invention with the screw cover and the box body hidden.

In the picture:

1. Bottom plate 11, slot 12, slide rail;

2. Promotion Department;

3. Rotor 31, rotating shaft 32, slot 33, pin 34, protective wall;

4. Blade assembly 41, blade 42, tool holder;

5. Screw cap 51, rotating column 52, pushing column;

8. Shrapnel 81, ring part 82, elastic pin;

9, box body 91, button pin.

Detailed ways

The following descriptions are only preferred embodiments of the present utility model, and do not therefore limit the protection scope of the present utility model.

Embodiment, as shown in Fig. 1 to Fig. 7, a kind of paper cutting machine that rotates and switches blades, comprises bottom plate 1 and knife box, and bottom plate 1 is provided with slide rail 12, and knife box is slidably installed on slide rail 12, and the knife box rotates A rotor 3 is installed, the rotor 3 is provided with several blade assemblies 4 along its circumferential direction, the blade assembly 4 is provided with blades 41, the blades 41 are accommodated in the rotor 3, the rotor 3 is placed horizontally and horizontally, and the rotation axis 31 of the rotor 3 is perpendicular to the bottom plate 1. The bottom surface of the rotor 3 is provided with a number of thin slots 32 for the blades 41 to protrude downwards. A rotary cover 5 is installed on the top of the knife box. The rotary cover 5 is connected to the rotor 3. When the rotary cover 5 rotates, the rotor 3 is driven to rotate synchronously. The inside of the top of the knife box is provided with a section of pushing part 2 along the rotation direction of the rotor 3, through which the selected blade assembly 4 is pushed downwards out of the knife box, and the lower end of the pushing part 2 goes down beyond the blade assembly 4 in the initial state When the blade 41 is switched, the rotary cover 5 drives the rotor 3 and the blade assembly 4 to rotate to a selected position, and the pushing part 2 pushes the selected blade assembly 4 to move downward, and the blade 41 of the blade assembly 4 protrudes from the bottom surface of the rotor 3 .

The middle part of the push part 2 is provided with a stop section, which is used to keep the blade 41 in the state of extending downward, and a transition section is respectively arranged on both sides of the push part 2, and the transition section drives and controls the blade assembly 4 to extend downward and In the upward reset process, the two pushing sections are respectively connected to both sides of the stop section, and the transition section is an inclined part or an arc part. While rotating the screw cap 5 to select the blade assembly 4, the selected blade assembly 4 rotates to the position of the pusher 2, and the top of the blade assembly 4 is pressed against the pusher 2 and moves downward, and the pusher 2 will select the blade assembly 4. The blade assembly 4 is pushed down, so that the blade 41 moves downward and is exposed outside the bottom surface of the rotor 3, and the blade 41 is kept in the extended state, so that it is not necessary to press the knife box hard when cutting paper, which is more convenient when cutting paper and easy. When the paper is not cut, turn the rotary cover 5 to the position where no blade 41 is selected, all the blades 41 remain in the pop-up state, and all the blades 41 are retracted in the rotor 3 to prevent the blades 41 from accidentally scratching the user , improve the safety of the knife box.

A rotating column 51 is disposed at the center of the bottom of the rotating cover 5 , and a circular hole is opened at the center of the rotating shaft 31 of the rotor 3 , and the rotating column 51 is inserted into the circular hole of the rotating shaft 31 . The side of the rotating column 51 is provided with a number of pushing columns 52 , and the center of the pushing column 52 is provided with a socket. When the rotary cap 5 is rotated, the rotary cap 5 drives the rotor 3 to rotate synchronously through the cooperation of the latch 33 and the push column 52. The rotary cap 5 is positioned at the top of the knife box and will not be blocked by other parts. It is easy to operate, easy to apply force, and The screw cap 5 has a large area, and it saves more effort when the screw cap 5 is rotated, and the rotation is easier.

The rotor 3 is provided with 8 blade storage cavities along its circumference, and the 8 blade assemblies 4 are respectively movable and placed in the blade storage cavities. The rotor 3 is provided with a shrapnel 8 for keeping the blade assembly 4 bouncing upwards, and the shrapnel 8 pushes upwards. In the blade assembly 4, the slot 32 communicates with the blade receiving cavity. The blade assembly 4 includes a blade 41, a knife shaft and a knife holder 42, the blade 41 is a circular blade 41, and the blade 41 is divided into a straight line blade 41, a wave blade 41 and a dotted line blade 41 etc. according to the paper cutting effect, and the blade 41 is fixed on a knife shaft. The two ends of the cutter shaft are rotatably mounted on a tool holder 42, and the tool holder 42 is movably placed in the blade storage cavity, and each blade 41 is respectively arranged on a plane passing through the rotating shaft 31 of the rotor 3, and the rotary cover 5 drives the rotor 3 to rotate and pushes the part 2 Pushing the top of the toolholder 42 of the selected blade assembly 4 pushes the blade 41 downward.

The shrapnel 8 includes an integrally stamped ring portion 81 and a number of elastic pins 82, the inner ends of each elastic pin 82 are connected to the central fixing portion, and the outer ends of each elastic pin 82 are upwardly pressed against the knife holder 42, and the ring portion 81 is fixed on the top of the rotating shaft 31 , and the ring portion 81 is sheathed on the rotating column 51 . The tool holder 42 has a top wall and two side walls for cooperating with the pusher 2, the upper ends of the two side walls are respectively connected to the two sides of the top wall, and the lower ends of the two side walls are respectively provided with shaft holes, and the knife shaft The two ends are movably inserted in the shaft holes on the two side walls respectively, and the outer end of the elastic pin 82 is provided with a bending portion for upwardly pressing against the tool holder 42, the bending portion arches upward, and the bending portion is against the top the lower surface of the wall. The shrapnel 8 in the knife box has an integrated structure, which has lower cost and is more convenient to process and assemble.

The knife box includes a box body 9, a buckle pin 91 is respectively arranged on both sides of the bottom of the box body 9, a slot 11 is provided on the bottom plate 1, a slide rail 12 is respectively arranged on both sides of the slot 11, and the two buckle pins 91 slide respectively The slide rails 12 lapped on both sides of the slot 11, the top of the box body 9 is provided with a large circular hole, the rotating column 51 and the pushing column 52 of the screw cover 5 pass through the large circular hole to connect the rotor 3, and the large circular hole One section of the wall protrudes downwards from the pushing part 2 .

A rotor cavity is set inside the box body 9. The shape of the rotor cavity is similar to a cylindrical shape. The shape of the rotor 3 matches the rotor cavity. The rotor 3 is movably accommodated in the rotor cavity. The bottom surface of the box body 9 is open. The bottom of the box body 9 is exposed; the two sides of the narrow groove 32 are respectively formed with protective walls 34, and the protective walls 34 protrude from the bottom surface of the rotor 3, and the pushing part 2 pushes the selected blade 41 downwards, and the selected blade 41 is downwards. protrudes beyond the protective wall 34 .

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (10)

1. A paper cutter for rotating and switching blades, including a bottom plate (1) and a knife box, the bottom plate (1) is provided with a slide rail (12), the knife box is slidably mounted on the slide rail (12), and a knife box is rotatably installed inside the knife box The rotor (3), the rotor (3) is provided with several blade assemblies (4) along its circumferential direction, the blade assembly (4) is provided with blades (41), and the blades (41) are stored in the rotor (3), characterized in that: The rotation axis (31) of the rotor (3) is perpendicular to the bottom plate (1), and the bottom surface of the rotor (3) is provided with a number of thin slots (32) for the blades (41) to protrude downwards. The rotary cover (5) is used to drive the rotor (3) to rotate, the rotary cover (5) is connected to the rotor (3), and the inside of the top of the knife box is provided with a section along the rotation direction of the rotor (3) for the selected blade assembly ( 4) Push out the pushing part (2) of the knife box downwards, the lower end of the pushing part (2) exceeds the upper end of the blade assembly (4) in the initial state, and the screw cover (5) drives the rotor when switching the blade (41) (3) and the blade assembly (4) rotate to the selected position, the pushing part (2) pushes the selected blade assembly (4) to move downward, and the blade (41) of the blade assembly (4) extends from the bottom surface of the rotor (3) out. 2. A paper cutting machine with rotating and switching blades according to claim 1, characterized in that: the middle part of the pushing part (2) is provided with a stop for keeping the blade (41) in a downwardly protruding state A transition section is provided on both sides of the pushing part (2), and the two pushing sections are respectively connected to both sides of the stop section, and the transition section is an inclined part or an arc part. 3. A paper cutter with rotating blades according to claim 1, characterized in that: a rotating column (51) is set at the center of the bottom of the rotating cover (5), and the rotating shaft of the rotor (3) ( 31) is provided with a circular hole in the center, and the rotating column (51) is inserted into the circular hole of the rotating shaft (31). 4. A paper cutting machine with rotating and switching blades according to claim 3, characterized in that: a number of pushing columns (52) are arranged on the side of the rotating column (51), and the center of the pushing column (52) is opened In the socket, the top of the rotor (3) is provided with a plurality of latches (33), and the latches (33) are inserted into the sockets of the push column (52). 5. A paper cutting machine with rotating and switching blades according to claim 3, characterized in that: the rotor (3) is provided with several blade storage cavities along its circumferential direction, and the thin grooves (32) communicate with the blade storage cavities. The blade assembly (4) is movably placed in the blade storage cavity, and the rotor (3) is provided with a shrapnel (8) for keeping the blade assembly (4) bouncing upwards, and the shrapnel (8) abuts the blade assembly (4) upwards. 6. A paper cutter with rotating and switching blades according to claim 5, characterized in that: the blade assembly (4) includes a knife shaft and a knife holder (42), the blade (41) is fixed on a knife shaft, and the knife The two ends of the shaft are rotatably mounted on a tool holder (42), and the tool holder (42) is movably placed in the blade storage cavity, and each blade (41) is respectively arranged on the plane passing through the rotating shaft (31) of the rotor (3), and the screw cover (5) After driving the rotor (3) to rotate, the pushing part (2) pushes the top of the tool holder (42) of the selected blade assembly (4) to push the blade (41) downward. 7. A paper cutting machine with rotating and switching blades according to claim 6, characterized in that: the elastic piece (8) includes an integrally punched ring part (81) and a number of elastic pins (82), each The inner ends of the elastic pins (82) are connected to the central fixing part, and the outer ends of each elastic pin (82) push up against the tool holder (42), and the ring part (81) is fixed on the top of the rotating shaft (31). The ring portion (81) is sheathed on the rotating column (51). 8. A paper cutter with rotating blades according to claim 7, characterized in that: the knife holder (42) has a top wall and two side walls for cooperating with the pushing part (2) to push , the upper ends of the two side walls are respectively connected to the two sides of the top wall, the lower ends of the two side walls are respectively provided with shaft holes, and the two ends of the knife shaft are respectively movably inserted in the shaft holes of the two side walls, and the elastic pins (82) The outer end is provided with a bending portion for upwardly abutting against the tool holder (42), the bending portion arches upwards, and the bending portion abuts against the lower surface of the top wall. 9. A paper cutting machine with rotating and switching blades according to claim 4, characterized in that: the knife box includes a box body (9), and the two sides of the bottom of the box body (9) are respectively provided with a button ( 91), the bottom plate (1) is provided with a slot (11), and a slide rail (12) is provided on both sides of the slot (11). The side slide rail (12), the top of the box body (9) has a large circular hole, the rotating column (51) and the pushing column (52) of the screw cover (5) pass through the large circular hole to connect the rotor (3), One section of the wall edge of the large circular hole protrudes downward from the pushing part (2). 10. A paper cutting machine with rotating and switching blades according to claim 9, characterized in that: a rotor cavity is set inside the box body (9), the shape of the rotor cavity is similar to a cylindrical shape, and the rotor (3) The shape matches the rotor cavity, the rotor (3) is movably accommodated in the rotor cavity, the bottom surface of the box body (9) is open, and the bottom surface of the rotor (3) is exposed from the bottom of the box body (9); the fine groove (32) Protective walls (34) are respectively formed on both sides. The protective walls (34) protrude from the bottom surface of the rotor (3). The lower protrudes beyond the protective wall (34).