CN211333513U

CN211333513U - Cutter for experiment

Info

Publication number: CN211333513U
Application number: CN201922457736.2U
Authority: CN
Inventors: 周樊; 彭方仁; 谭鹏鹏; 朱凯凯; 梁有旺; 郑小琴
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-25
Anticipated expiration: 2029-12-30

Abstract

A cutter for experiments relates to the technical field of experimental equipment, and comprises a cutter handle, connecting plates and blades, wherein the cutter handle is provided with a guide hole, the cutter handle is provided with at least two connecting plates, the blades are arranged on the connecting plates, and the blades arranged on the connecting plates are arranged in parallel; one end of the connecting plate extends into the guide hole, the connecting plate can move relative to the knife handle along the guide hole, the connecting plate is connected with the knife handle through a fixing structure, and scale marks are arranged on the connecting plate along the length direction of the guide hole. Through the cutter for experiments can cut out the sheet of setting for the width, easy and simple to handle, the precision is relatively higher.

Description

Cutter for experiment

Technical Field

The utility model relates to an experimental device field particularly, relates to a cutterbar for experiments.

Background

In the course of processing a test material, it is often necessary to slice the material, and in the case of slicing, a constant-width sheet is often necessary.

At present, when a slicing process is performed, a cutter is generally used to firstly perform cutting along a straight track, then measure a set width, and perform a second cutting along the straight track, so as to obtain a slice with the set width.

However, in the above method, the two cutting lines are not parallel in practical operation, and it is difficult to ensure the same width of the cut sheet in the non-linear cutting process. In summary, in the conventional technique, it is difficult to cut a sheet having a predetermined width.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cutterbar for experiments, it can once accomplish the cutting of setting for the width sheet.

The utility model discloses a realize like this:

an experimental cutter, comprising: the cutter comprises a cutter handle, connecting plates and blades, wherein a guide hole is formed in the cutter handle, at least two connecting plates are arranged on the cutter handle, the blades are arranged on the connecting plates, and the blades arranged on the connecting plates are arranged in parallel relatively; one end of the connecting plate extends into the guide hole, the connecting plate can move relative to the knife handle along the guide hole, the connecting plate is connected with the knife handle through a fixing structure, and scale marks are arranged on the connecting plate along the length direction of the guide hole.

In a feasible implementation scheme, the electric connector further comprises a knob and an elastic reset piece, wherein a clamping block is arranged on one side, facing the connecting plate, of the knob, a first insertion hole and a second insertion hole are formed in the connecting plate, the knob is in a first state when the clamping block is inserted into the first insertion hole, the knob is in a second state when the clamping block is inserted into the second insertion hole, the knob can move relative to the connecting plate to be far away from or close to the connecting plate, and the knob can rotate relative to the connecting plate to switch between the first state and the second state;

the blade is provided with a third jack and a fourth jack, the third jack is opposite to the second jack, and the fourth jack is used for allowing the knob in the first state to pass through.

In a feasible implementation scheme, still include the mount pad, be provided with the mounting hole on the connecting plate, the mount pad includes interconnect's pole portion and board, pole portion passes the mounting hole with the knob is connected, elasticity resets and locates the piece cover pole portion, just elasticity resets and is located the connecting plate with between the board.

In a feasible implementation scheme, a limiting groove is formed in the connecting plate, a limiting block is arranged on one side, facing the connecting plate, of the knob, the clamping block is arranged on the limiting block, and the limiting groove is used for accommodating the limiting block of the knob in the first state.

In a possible embodiment, the fixing structure includes a connecting shaft and a locking member, the connecting shaft is connected to the connecting plate, the connecting shaft passes through the guide hole, an external thread is provided at one end of the connecting shaft, the locking member has an internal thread matching the external thread, the connecting shaft is in threaded connection with the locking member, and the locking member and the connecting plate are respectively located at two sides of the guide hole.

In a possible embodiment, the connecting shaft sleeve is provided with a bearing, the bearing is located in the guide hole, and the length of the bearing along the axial direction is smaller than or equal to the hole depth of the guide hole.

In a possible embodiment, the inner wall of the inner ring of the bearing is provided with a sliding groove along the axial direction, the connecting shaft is provided with a protrusion extending along the axial direction of the connecting shaft, the protrusion is arranged opposite to the sliding groove, and the protrusion extends into the sliding groove.

In one possible embodiment, the extension handle is connected with the locking piece.

In a feasible implementation scheme, the handle of a knife includes mainboard and baffle, the baffle is installed respectively to the both sides of mainboard, the mainboard with the baffle is the angle setting, the baffle deviates from one side of mainboard is provided with anti-skidding structure, the guiding hole set up in the mainboard.

In a possible embodiment, a leveling rod is arranged on the connecting plate, and the leveling rod points to the scale marks.

The beneficial effects of the utility model include at least:

the utility model provides an in-process of the use of cutter for experiments can learn the distance between two arbitrary connecting plates through looking over the scale mark, through the position that changes the connecting plate, can control the distance between two connecting plates to adjust the distance between two connecting plates to the setting value, so that the sheet of the blade cutting of connecting on two connecting plates is for setting for the width. After the adjustment is completed, the positions of the two connecting plates are fixed by using a fixing structure so that the distance between the two blades is constant. In the cutting process, the width of the cut sheet is the set width, and the sheet with the same width can be obtained no matter the sheet is cut along a straight line or a non-straight line.

To sum up, can cut out the sheet of setting for the width through the cutter for the experiment that this application provided, easy and simple to handle, the precision is higher relatively.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an experimental cutter provided in an embodiment of the present invention;

fig. 2 is an exploded view of a connecting plate and a fixing structure of an experimental cutter according to an embodiment of the present invention at a first viewing angle;

fig. 3 is an exploded view of a connecting plate and a fixing structure of an experimental cutter according to an embodiment of the present invention at a second viewing angle;

fig. 4 is an exploded view of a connecting plate and a locking structure of the cutter for experiments according to the embodiment of the present invention at a second viewing angle;

fig. 5 is a schematic structural diagram of a blade in an experimental cutter provided by an embodiment of the present invention;

fig. 6 is a schematic view illustrating a connection between a blade and a connection plate through a locking structure in an experimental cutter.

In the figure:

1-a blade; 2-a first receptacle; 3-a second jack; 4-connecting plates; 5-a leveling rod; 6-a graduated scale; 7-a main board; 8-a baffle plate; 9-a guide hole; 10-an elongate handle; 11-a lock; 12-a bearing; 14-mounting holes; 15-a limiting groove; 16-a knob; 17-a limiting block; 18-a cartridge; 19-first stage; 20-the second section; 21-a mounting seat; 22-an elastic return member; 23-a third receptacle; 24-fourth jack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the cutter or element for experiment that is referred to must have a specific position, be constructed and operated in a specific position, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 6, the present embodiment provides an experimental cutter, including: the cutter comprises a cutter handle, connecting plates 4 and blades 1, wherein guide holes 9 are formed in the cutter handle, at least two connecting plates 4 are arranged on the cutter handle, the blades 1 are arranged on the connecting plates 4, and the blades 1 arranged on the connecting plates 4 are arranged in parallel; one end of the connecting plate 4 extends into the guide hole 9, the connecting plate 4 can move along the guide hole 9 relative to the cutter handle, the connecting plate 4 is connected with the cutter handle through a fixing structure, and the connecting plate 4 is provided with scale marks along the length direction of the guide hole 9.

When the two connecting plates 4 are arranged on the knife handle, the two blades 1 can be installed at the same time, and the operation of cutting the equal-width sheets can be completed through the two blades 1.

When more connecting plates 4 are arranged on the knife handle, more sheets can be cut by using the cutter for experiments. For example, when three connecting plates 4 are provided on the handle, two blades 1 can be mounted on the handle only through two of the connecting plates 4, and the cutting of one equal-width sheet is completed in the cutting process. Alternatively, the blades 1 may be mounted on three connecting plates 4, so that two sheets can be cut by the three blades 1 in one cutting process, and the widths of the two cut sheets can be equal or different by adjusting the distance between the three connecting plates 4. When the number of the connecting plates 4 arranged on the knife handle is more than three, the use mode is similar to that when three connecting plates 4 are arranged, and the description is omitted.

In a feasible embodiment, the handle of a knife includes mainboard 7 and baffle 8, and baffle 8 is installed respectively to the both sides of mainboard 7, and mainboard 7 is the angle setting with baffle 8, and one side that baffle 8 deviates from mainboard 7 is provided with anti-skidding structure, and guiding hole 9 sets up in mainboard 7. During use, the user grasps both flaps 8, thereby moving the entire laboratory cutter to perform the cutting operation.

Baffle 8 and mainboard 7 are the angle setting, and baffle 8 can be perpendicular to mainboard 7, and baffle 8 also can be with the relative slope setting of mainboard 7. The two baffles 8 may be inclined to each other or parallel to each other.

In the configuration shown in fig. 1, the two baffle plates 8 are relatively parallel, and both baffle plates 8 are arranged perpendicular to the main plate 7.

One side of the baffle plate 8 departing from the main board 7 is provided with an anti-slip structure which can be an anti-slip bump, an anti-slip groove or an anti-slip film. In a feasible implementation manner, the anti-slip structure may be a rubber pad, the surface of the rubber pad is provided with anti-slip lines, and the rubber pad has a certain thickness and a certain elasticity, so that the holding comfort level is higher.

In one embodiment, the graduation marks are arranged at the edge of the guide hole 9, and the distance between the two blades 1 can be judged according to the length of the graduation mark between the two connecting plates 4.

Or, in a preferred embodiment, a leveling ruler 5 is arranged on the connecting plate 4, the leveling ruler 5 points to the scale marks, and the leveling ruler 5 is used for indicating the position of the blade 1 on the connecting plate 4, so that the distance between the two blades 1 can be more accurately judged through the distance between the leveling rulers 5 on different connecting plates 4.

Further, the handle of a knife still includes scale 6, and scale 6 sets up along the length direction of guiding hole 9, and scale 6 is the angle setting with mainboard 7, and the scale mark sets up on scale 6, the scale mark on the 5 directional scale 6 of scale.

In the orientation shown in fig. 1, the scale 6 is mounted on top of the main plate 7, and the scale 6 is perpendicular to the main plate 7. This arrangement facilitates the user to view the position of the scale to which the leveling rod 5 is pointing from above during adjustment.

In an alternative embodiment, the blade 1 is removably connected to the connecting plate 4 to facilitate replacement of the blade 1.

Specifically, the blade 1 and the connecting plate 4 are detachably connected through a locking structure. As shown in fig. 2 to 6, in a preferred embodiment, the locking structure includes a knob 16 and an elastic reset member 22, a latch 18 is disposed on a side of the knob 16 facing the connecting plate 4, a first insertion hole 2 and a second insertion hole 3 are disposed on the connecting plate 4, the knob 16 is in a first state when the latch 18 is inserted into the first insertion hole 2, the knob 16 is in a second state when the latch 18 is inserted into the second insertion hole 3, the knob 16 can move relative to the connecting plate 4 to be far away from or close to the connecting plate 4, and the knob 16 can rotate relative to the connecting plate 4 to switch between the first state and the second state.

The blade 1 is provided with a third insertion hole 23 and a fourth insertion hole 24, the third insertion hole 23 is opposite to the second insertion hole 3, and the fourth insertion hole 24 is used for the knob 16 in the first state to pass through.

When the blade 1 is not mounted on the connecting plate 4, the knob 16 is in the first state, and the latch 18 of the knob 16 is inserted into the first insertion hole 2. During the process of mounting the blade 1, the fourth insertion hole 24 of the blade 1 is fitted over the knob 16, so that the knob 16 passes through the fourth insertion hole 24 and a partial area of the side surface of the blade 1 is brought into contact with the connection plate 4.

After moving the knob 16 away from the connecting plate 4, the knob 16 is rotated so that the latch 18 of the knob 16 is rotated to be opposite to the second insertion hole 3, and then the latch 18 is inserted into the second insertion hole 3 through the third insertion hole 23, thereby fixing the blade 1 to the connecting plate 4. When the knob 16 moves away from the connecting plate 4, the elastic restoring member 22 stores force, and the elastic restoring member 22 is used for providing pulling force for the knob 16 so that the knob 16 moves towards the connecting plate 4. When the knob 16 is in the first state, the reset elastic element enables the fixture block 18 to be inserted into the first jack 2 all the time; when the knob 16 is in the second state, the return elastic member causes the latch 18 to be always inserted into the second insertion hole 3.

In a possible embodiment, the locking structure further includes a mounting seat 21, the connecting plate 4 is provided with a mounting hole 14, the mounting seat 21 includes a rod portion and a plate portion, the rod portion penetrates through the mounting hole 14 to be connected with the knob 16, the elastic reset member 22 is sleeved on the rod portion, and the elastic reset member 22 is located between the connecting plate 4 and the plate portion. With this arrangement, when the knob 16 is moved in a direction away from the connecting plate 4, the distance between the plate portion and the connecting plate 4 is reduced, and the elastic restoring member 22 compresses and stores the force. When knob 16 is rotated, mounting block 21 rotates with knob 16. In order to facilitate mounting of the knob 16 and the mounting seat 21, a screw thread is provided on an end of the rod portion of the mounting seat 21 facing away from the plate portion, and a screw hole is provided on the knob 16, so that the mounting seat 21 and the knob 16 can be screwed together. In the direction shown in fig. 4, during installation, the installation base 21 passes through the elastic reset piece 22 from left to right and then extends into the installation hole 14, the rod part passes through the installation hole 14 and then extends into the threaded hole of the knob 16 on the right side of the connecting plate 4, and the installation base 21 is rotated, so that the installation base 21 is connected with the knob 16.

Specifically, the elastic restoring member 22 may employ a coil spring.

In a possible embodiment, the number of the first insertion holes 2 is two, and two first insertion holes 2 are respectively positioned at two opposite sides of the mounting hole 14; the number of the second jacks 3 is two, and the two second jacks 3 are respectively positioned at two sides of the mounting hole 14; the connecting line of the two first jacks 2 is crossed with the connecting line of the two second jacks 3. The distance between the two first receptacles 2 is equal to the distance between the two second receptacles 3. The number of the latch 18 on the knob 16 is two, and the distance between the two latches 18 is equal to the distance between the two first insertion holes 2 (or the distance between the two second insertion holes 3).

The included angle between the connecting line between the two first insertion holes 2 and the connecting line between the two second insertion holes 3 is the angle which the knob 16 needs to rotate when being switched from the first state to the second state.

In the orientation shown in fig. 2, one of the first jacks 2 is located on the left side of the mounting hole 14, and the other first jack 2 is located on the right side of the mounting hole 14; one of the second insertion holes 3 is located on the upper side of the mounting hole 14, and the other second insertion hole 3 is located on the lower side of the mounting hole 14. With this arrangement, the angle between the line between the two first sockets 2 and the line between the two second sockets 3 is 90 degrees, i.e. the minimum rotation of 90 degrees is required to switch the knob 16 from the first state to the second state.

As shown in fig. 1 and fig. 2, in a preferred embodiment, a limiting groove 15 is provided on the connecting plate 4, a limiting block 17 is provided on a side of the knob 16 facing the connecting plate 4, a locking block 18 is provided on the limiting block 17, the size of the limiting block 17 is smaller than that of the knob 16, and the limiting groove 15 is used for accommodating the limiting block 17 of the knob 16 in the first state. In one embodiment of this embodiment, the knob 16 has a cubic structure, and the side surface parallel to the blade 1 is rectangular, and the limiting block 17 also has a cubic structure, and the side surface parallel to the blade 1 is rectangular, and the width of the rectangle is smaller than the width of the side surface parallel to the blade 1 of the knob 16. The limiting groove 15 is a rectangular groove, and the fourth insertion hole 24 is a rectangular hole. The fixture block 18 is a square fixture block 18, and the first jack 2, the second jack 3 and the third jack 23 are all square holes. When the knob 16 is in the first state, the length direction of the knob 16 is the same as the length direction of the blade 1 (as shown in fig. 1), the latch 18 extends into the first insertion hole 2, and the limit block 17 extends into the limit groove 15. When the knob 16 is in the second state, the length direction of the knob 16 is perpendicular to the length direction of the blade 1 (as shown in fig. 6), the latch 18 extends into the second insertion hole 3, and the stopper 17 abuts against the blade 1.

In a possible embodiment, the fixing structure comprises a connecting shaft and a locking piece 11, the connecting shaft is connected with the connecting plate 4, the connecting shaft passes through the guide hole 9, the connecting shaft is provided with external threads, the locking piece 11 is provided with internal threads matched with the external threads of the connecting shaft, one end of the connecting shaft is in threaded connection with the locking piece 11, and the locking piece 11 and the connecting plate 4 are respectively positioned on two sides of the guide hole 9. After the locking member 11 is screwed, the locking member 11 and the connecting plate 4 are respectively clamped on both sides of the main plate 7, thereby fixing the connecting plate 4 at the current position. After unscrewing the locking element 11, the connecting plate 4 can be moved along the guide hole 9 by means of the connecting shaft. The length of the bearing 12 in the axial direction is equal to or less than the hole depth of the guide hole 9. The locking member 11 may be a nut.

In a possible embodiment, the connecting shaft sleeve is provided with a bearing 12, the bearing 12 is positioned in the guide hole 9, and the length of the bearing 12 along the axial direction is less than or equal to the hole depth of the guide hole 9. After loosening the locking piece 11, the connecting plate 4 can move along the guide hole 9 through the bearing 12, and in the moving mode, the friction force between the bearing 12 and the inner wall of the guide block is smaller, and the movement is smoother. The length of the bearing 12 in the axial direction is equal to or less than the hole depth of the guide hole 9, and preferably, the length of the bearing 12 in the axial direction is equal to the hole depth of the guide hole 9.

In a possible embodiment, the inner ring of the bearing 12 is fixedly connected to the connecting shaft.

Alternatively, as shown in fig. 3, in a preferred embodiment, the inner wall of the inner ring of the bearing 12 is provided with a sliding groove along the axial direction, the connecting shaft is provided with a protrusion, the protrusion extends along the axial direction of the connecting shaft, that is, the length direction of the protrusion is the same as the axial direction of the connecting shaft, the protrusion is opposite to the sliding groove, and the protrusion can extend into the sliding groove. When the bearing 12 is connected with the connecting shaft, the bulge of the connecting shaft extends into the sliding groove from one side of the sliding groove, and the bearing 12 can axially move relative to the connecting shaft but cannot rotate relative to the connecting shaft.

In particular, as shown in fig. 3, the connection shaft comprises a first section 19 and a second section 20, the second section 20 being provided with a thread for connection with the locking member 11; the first section 19 is provided with a protrusion for connection with the bearing 12. The second section 20 is connected to the first section 19, and the first section 19 is connected to the connection plate 4. In one possible embodiment, the first section 19, the second section 20 and the web 4 may be a unitary structure, integrally formed during the manufacturing process.

To facilitate rotation of lock 11, in a preferred embodiment, the trial cutter further includes an extension handle 10, with extension handle 10 being connected to lock 11. Since the extension handle 10 is provided, the locking member 11 can be rotated by the extension handle 10, and the extension handle 10 increases the accessible area for the user, thereby facilitating the operation of rotating the locking member 11.

As shown in fig. 2 to 4, a fitting groove is provided at one end of the extension handle 10, and the locking member 11 is at least partially inserted into the fitting groove.

In a specific embodiment, a protrusion is disposed in the assembling groove along the axial direction, a groove is disposed on the outer side of the locking member 11 along the axial direction, and after the locking member 11 is inserted into the assembling groove, the protrusion is inserted into the groove, so that the extension handle 10 can drive the locking member 11 to rotate.

Alternatively, in another embodiment, an external thread is provided on the outside of the lock member 11, an internal thread is provided in the fitting groove, and the extension lever 10 is screwed to the lock member 11.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An experimental cutter, comprising: the cutter comprises a cutter handle, connecting plates and blades, wherein a guide hole is formed in the cutter handle, at least two connecting plates are arranged on the cutter handle, the blades are arranged on the connecting plates, and the blades arranged on the connecting plates are arranged in parallel relatively; one end of the connecting plate extends into the guide hole, the connecting plate can move relative to the knife handle along the guide hole, the connecting plate is connected with the knife handle through a fixing structure, and scale marks are arranged on the connecting plate along the length direction of the guide hole.

2. The cutter for experiments according to claim 1, further comprising a knob and an elastic reset piece, wherein a fixture block is arranged on one side of the knob facing the connecting plate, a first insertion hole and a second insertion hole are arranged on the connecting plate, the knob is in a first state when the fixture block is inserted into the first insertion hole, the knob is in a second state when the fixture block is inserted into the second insertion hole, the knob can move relative to the connecting plate to be far away from or close to the connecting plate, and the knob can rotate relative to the connecting plate to switch between the first state and the second state;

3. The cutter for experiments of claim 2, further comprising a mounting seat, wherein the connecting plate is provided with a mounting hole, the mounting seat comprises a rod portion and a plate portion which are connected with each other, the rod portion penetrates through the mounting hole to be connected with the knob, the elastic reset member is sleeved on the rod portion, and the elastic reset member is located between the connecting plate and the plate portion.

4. The cutter for experiments as claimed in claim 2, wherein the connecting plate is provided with a limiting groove, one side of the knob facing the connecting plate is provided with a limiting block, the fixture block is arranged on the limiting block, and the limiting groove is used for accommodating the limiting block of the knob in the first state.

5. The cutter for experiments according to claim 1, wherein the fixing structure comprises a connecting shaft and a locking member, the connecting shaft is connected with the connecting plate, the connecting shaft passes through the guide hole, an external thread is arranged at one end of the connecting shaft, the locking member has an internal thread matched with the external thread, the connecting shaft is in threaded connection with the locking member, and the locking member and the connecting plate are respectively positioned at two sides of the guide hole.

6. The cutter for experiments as claimed in claim 5, wherein the connecting shaft sleeve is provided with a bearing, the bearing is positioned in the guide hole, and the length of the bearing along the axial direction is less than or equal to the hole depth of the guide hole.

7. The cutter for experiments as claimed in claim 6, wherein the inner wall of the inner ring of the bearing is provided with a sliding groove in the axial direction, the connecting shaft is provided with a protrusion extending in the axial direction of the connecting shaft, the protrusion is disposed opposite to the sliding groove, and the protrusion extends into the sliding groove.

8. The cutter of claim 5, further comprising an extension handle coupled to the latch.

9. The cutter for experiments according to claim 1, characterized in that the cutter handle comprises a main plate and baffle plates, the baffle plates are respectively mounted on two sides of the main plate, the main plate and the baffle plates are arranged at an angle, an anti-skidding structure is arranged on one side of the baffle plate, which is far away from the main plate, and the guide hole is formed in the main plate.

10. The cutter of claim 1, wherein a scale is disposed on the connecting plate and is oriented toward the graduation marks.