CN113428454B - Packing tape sealing tape cutting device for carton unsealing - Google Patents

Abstract

The invention relates to a cutting device for a packing belt sealing adhesive tape for opening a carton, which comprises a supporting connecting part, a cutting part and a cutting part, wherein the cutting part and the cutting part are both arranged on the supporting connecting part; when the supporting connecting part rotates along the X axis, the cutting part is switched to carry out a packaging belt cutting process or the cutting part is switched to carry out a tape cutting and sealing process; after one or more of movement combination of movement of the supporting connecting part along the X axis, the Y axis, the Z axis and the rotation of the Z axis, the supporting connecting part supports the cutting part to reach a target position for cutting a packing belt of the corrugated case, or supports the cutting part to reach a target position for cutting a sealing tape of the corrugated case; the target position of the cutting part is the position for cutting off a packing belt of the corrugated case, and the target position of the cutting part is the initial position for cutting off the sealing tape of the corrugated case.

Description

Packing tape sealing tape cutting device for carton unsealing

technical field

The invention relates to the technical field of transportation packaging and warehousing and logistics, in particular to a cutting device for packing tape and sealing tape for unsealing cartons.

Background technique

In the incoming port of the automated three-dimensional warehouse in the field of warehousing and logistics, the pallets and corrugated boxes are transported to the entrance of the automated three-dimensional warehouse by forklifts, and the packing tape is cut manually, the sealing tape is cut, the large plate of the box cover and the small plate of the box cover are turned over, and then manually grabbed The goods go to the scanner to identify the identification code of each product, and then put into the warehouse turnover box, and then the warehouse turnover box is stored in the location of the automated three-dimensional warehouse. However, the methods of manually cutting the packing tape and cutting the sealing tape have low efficiency, high labor intensity and high cost.

SUMMARY OF THE INVENTION

For this reason, the technical problem to be solved by the present invention is to overcome the problems of low efficiency, high labor intensity and high cost of manually cutting the packing tape, cutting and opening the sealing tape in the prior art, and providing a kind of packing tape and sealing tape cutting for carton unsealing. The device is installed on the end of the robot or the execution end of the automation device, and with the help of the vision system, it can automatically cut off the packing tape and cut the sealing tape which is highly adaptable to different specifications and sizes of corrugated boxes and different positions of the packing tape. It is easy to use and reduces manual operations. Provide technical support for building intelligent factories.

In order to solve the above-mentioned technical problems, the present invention provides a packing tape sealing tape cutting device for unsealing the carton, which is characterized in that:

It includes a support connecting part, a shearing part and a cutting part all installed on the support connecting part. The support connecting part is installed at the end of the robot or the execution end of the numerical control device by means of a diamond-shaped mounting plate. Connect the diamond-shaped mounting plate and the square plate into a whole; the robot end or the numerical control device provides X-axis rotation, Z-axis rotation, X-axis direction, Y-axis direction, and Z-axis direction movement; the supporting and connecting parts are along the X-axis. When rotating, switch the shearing member to perform the cutting and packing tape process or the cutting member to perform the cutting and sealing tape process;

After the supporting and connecting member moves along the X-axis direction, the Y-axis direction, the Z-axis direction, and the Z-axis rotation, one or more movements are combined, and the shearing member is supported to reach the goal of cutting the corrugated box packing tape. position, or support the cutting member to reach the target position for cutting the corrugated box sealing tape; or the supporting and connecting member moves along the X-axis direction, the Y-axis direction, and the Z-axis direction. One or more movement combinations Then, provide power for the cutting member to cut the sealing tape of the corrugated carton; the target position of the cutting member is the position where the corrugated box packing tape is cut, and the target position of the cutting member is to cut the The starting position of the corrugated box sealing tape. If the corrugated box support platform can be rotated 90 degrees along the Z axis, there is no need for a robot end or a numerical control device to perform the end Z axis rotation degree of freedom.

In one embodiment of the present invention, the shearing member includes a wide support plate and a narrow support plate, the wide support plate and the narrow support plate can be detachably mounted on the square plate, and the wide support plate is provided with There is a parallelogram fixed knife;

a rectangular moving plate, the rectangular moving plate lifts and lowers relative to the support connecting member;

"L"-shaped curved cutter bar, the curved cutter bar is a lever structure, the curved cutter bar is arranged on the front side of the support and connection part, and the middle part of the curved cutter bar is connected to the A wide support plate and a narrow support plate, the first end of the curved knife rod is provided with a triangular prism rotating knife; in the initial state, the cylinder piston rod extends to the farthest position, the rectangular moving plate descends to the bottom, and the triangular prism The lower plane of the rotary knife is in a horizontal position; after the supporting and connecting parts move along the Y-axis direction or/and the Z-axis direction, the triangular prism rotary knife is driven to press the box cover of the corrugated box, and the triangular prism rotates The knife is inserted under the packing belt of the corrugated box;

Two-force rod, the two-force rod is arranged obliquely, and the two ends of the two-force rod are respectively hinged to the hinge seat at the second end of the curved cutter bar and the double ear hinge seat on the rectangular moving plate;

When the cylinder piston rod is retracted and the rectangular moving plate is raised, the curved cutter rod is driven by the two-force rod to rotate around the stepped shaft pin, so that the triangular prism rotating knife and the parallelogram fixed knife are Cooperate with cutting the packing tape of the corrugated carton.

In an embodiment of the present invention, the middle of the rectangular moving plate is connected to the cylinder, and both sides of the rectangular moving plate located in the middle are connected to the square plate through two single-threaded guide rods. Linear bearings are set between the rectangular moving plate and the two single-head threaded guide rods;

In an embodiment of the present invention, the stepped shaft pin includes a first section with a small shaft diameter and a second section with a large shaft diameter, the first section of the stepped shaft pin is inserted into the hole of the narrow support plate, and the stepped shaft pin The second section is inserted into the hole of the wide support plate; the middle hole of the curved cutter bar is sleeved on the first section of the stepped shaft pin, and abuts the second section thereof, and the first section of the stepped shaft pin is located on the first section of the stepped shaft pin. A limit spacer is sleeved between the curved cutter bar and the narrow support plate;

In an embodiment of the present invention, the first end of the curved cutter bar and the triangular prism rotating knife are welded together by brazing; the upper slope of the triangular prism rotating knife is ground and sheared The rake face of the blade.

In one embodiment of the present invention, the parallelogram fixed knife is obliquely arranged in front of the wide support plate, and the lower inclined surface of the parallelogram fixed knife is the rake surface for sharpening the shearing edge.

In one embodiment of the present invention, the cutting part is obliquely arranged on the back of the wide support plate; in the cutting part, the flat plate and the slotted flat plate are welded together by brazing, and are integrally formed as a whole. The form is fixed on the wide support plate by screws, the blade is inserted into the square hole of the welding piece composed of the flat plate and the slotted flat plate with a clearance fit, and is fixed on the welding piece composed of the flat plate and the slotted flat plate with fine-tooth screws. The part cuts the sealing tape of the corrugated carton by the blade.

In another embodiment of the present invention, the shearing component includes a right-angle section cutter bar, the right-angle section cutter bar can be detachably mounted on the square plate, and a large flat fixed knife is provided at the lower end of the right-angle section cutter bar ; After the supporting and connecting parts move along the Y-axis direction or/and the Z-axis direction, drive the large flat fixed knife to press the box cover of the corrugated box, and make the large flat fixed knife inserted into the packing of the corrugated box belt below;

a rectangular moving plate, the rectangular moving plate lifts and lowers relative to the support connecting member;

a movable knife support plate, the movable knife support plate is connected to the rectangular moving plate, the movable knife support plate is provided with an oblique-edged movable knife, and the oblique-edged movable knife is fixed on the movable knife support plate by screws;

a pressure rod support seat, the pressure rod support seat is connected to the movable knife support plate;

Tooth end face pressing rod, a linear bearing is set between the tooth end face pressing rod and the pressing rod support seat, the tooth end face pressing rod moves up and down in the linear bearing hole, and the tooth end face pressing rod is supported by screws, The spacer restricts the axial downward movement; a compression spring is sleeved on the pressure rod of the tooth end face, and the two ends of the compression spring are respectively restricted by the stepped surface of the pressure rod of the tooth end face and the lower part of the support seat of the pressure rod to prevent tight;

In the initial state, the cylinder does not act, and the rectangular moving plate is at the uppermost position; during the shearing process, the piston rod of the cylinder extends, and when the rectangular moving plate descends, it drives the movable knife support plate and the inclined-blade movable knife to descend, Overcome the elastic force of the compression spring, so that the tooth end face of the tooth end face pressing rod presses the packing belt of the corrugated box on the large flat fixed knife, and makes the oblique blade movable knife cooperate with the large flat fixed knife to cut off The packing tape of the corrugated box.

In another embodiment of the present invention, the middle of the rectangular moving plate is connected to the cylinder, and both sides of the rectangular moving plate located in the middle are connected to the square plate through two single-threaded guide rods. Linear bearings are set between the rectangular moving plate and the two single-head threaded guide rods;

In another embodiment of the present invention, the large flat fixed knife and the right-angle section shank are welded together by brazing; the upper plane of the large flat fixed knife is the rake face of the grinding cutting edge.

In another embodiment of the present invention, the lower inclined surface of the beveled movable knife is the rake surface of the grinding shearing edge.

In another embodiment of the present invention, the cutting part is obliquely arranged in front of the right-angle section cutter bar; in the cutting part, the flat plate and the slotted flat plate are welded together by brazing, and are connected with The integral form is fixed on the right-angle cross-section shank by screws, the blade is inserted into the square hole of the welding piece composed of the flat plate and the slotted flat plate with a clearance fit, and is fixed on the welding piece composed of the flat plate and the slotted flat plate with fine-tooth screws. The cutting part cuts the sealing tape of the corrugated box by the blade.

The above-mentioned technical scheme of the present invention has the following advantages compared with the prior art:

The packing tape sealing tape cutting device for unsealing the carton according to the present invention is installed on the end of the robot or the execution end of the automation device, and with the help of the vision system, it can be highly adapted to different specifications and sizes of corrugated boxes and different positions of the packing tape. Automatically cut off the packing tape and cut the sealing tape, which is easy to use, reduces manual operations, and provides technical support for building an intelligent factory.

Description of drawings

In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below according to specific embodiments of the present invention and in conjunction with the accompanying drawings, wherein

1 is an A-A cross-sectional front view of Embodiment 1 of the packing tape sealing tape cutting device of the present invention;

Fig. 2 is the B-B sectional view of the first embodiment of the packing tape and sealing tape cutting device of the present invention;

3 is a C-C cross-sectional view of Embodiment 1 of the packing tape and sealing tape cutting device of the present invention;

4 is a D-D partial cross-sectional view of Embodiment 1 of the packing tape and sealing tape cutting device of the present invention;

Fig. 5 is the partial view of the E direction of Embodiment 1 of the packing tape and sealing tape cutting device of the present invention;

6 is a partial view of the F-direction of Embodiment 1 of the packaging tape and sealing tape cutting device of the present invention;

Fig. 7 is the G-G partial view of Embodiment 1 of the packing tape and sealing tape cutting device of the present invention;

8 is a schematic diagram of the movement of the moving knife when cutting the packing tape according to Embodiment 1 of the packing tape sealing tape cutting device of the present invention;

Fig. 9 is the front view of the second embodiment of the packing tape and sealing tape cutting device of the present invention;

Fig. 10 is the H-H sectional view of the second embodiment of the packing tape and sealing tape cutting device of the present invention;

11 is an I-I cross-sectional view of Embodiment 2 of the packing tape and sealing tape cutting device of the present invention;

12 is a J-J cross-sectional view of Embodiment 2 of the packing tape and sealing tape cutting device of the present invention;

13 is a K-K cross-sectional view of Embodiment 2 of the packaging tape and sealing tape cutting device according to the present invention.

Instructions for reference signs:

d - packing tape;

1-Support connecting parts, 11-Square plate, 12-Rhombus mounting plate, 13-Double-ended threaded rod;

2- Shearing parts, 21- Wide support plate, 22- Parallelogram fixed knife, 23- Rectangular moving plate, 24- Cylinder, 25- Bending cutter bar, 26- Step shaft pin, 27- Triangular prism rotating knife, 28 -Two force rod, 29-limiting spacer, 30-double ear hinge seat, 31-single thread guide rod, 32-linear bearing, 33-narrow support plate, 34-large flat fixed knife, 35-right-angle section knife Rod, 36- inclined blade movable knife, 37- movable knife support plate, 38- tooth end face pressure rod, 39- compression spring, 40- pressure rod support seat;

5- Cutting part, 51- Flat plate, 52- Blade, 53- Slotted flat plate.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

Example 1

As shown in FIGS. 1-3 , an embodiment of the present invention discloses a cutting device for packing tape and sealing tape for unsealing a carton, including a support connecting part 1 , a cutting part 2 mounted on the support connecting part 1 , and The cutting part 5, the diamond-shaped mounting plate 12 in the supporting and connecting part 1 is installed at the end of the robot or the execution end of the numerical control device, and two double-ended threaded tie rods 13 will connect the diamond-shaped mounting plate 12 and the square plate 11 into a whole; The robot end or numerical control device provides X-axis rotation, Z-axis rotation, X-axis direction, Y-axis direction, and Z-axis direction movement; when the support and connection part 1 rotates along the X-axis, the shearing part 2 is switched to perform shearing. Cutting the packing tape process (the shearing process shown in Figure 8, the cross-hatched part in Figures 1, 6, 8 is the packing tape d) or the cutting member 5 carries out the cutting and sealing tape process;

After the supporting and connecting member 1 moves along the X-axis direction, the Y-axis direction, the Z-axis direction, and the Z-axis rotation, one or more movements are combined, and the shearing member 2 is supported to reach the cutting corrugated box packing belt. the target position, or support the cutting member 5 to reach the target position of cutting the corrugated carton sealing tape; or the supporting and connecting member 1 moves along the X-axis direction, the Y-axis direction, and the Z-axis direction. After the combination of various motions, power is provided for the cutting member 5 to cut the sealing tape of the corrugated carton; the target position of the cutting member 2 is the position where the packing tape of the corrugated carton is cut, and the The target position is the starting position for cutting the corrugated box sealing tape.

The shearing member 2 includes a wide support plate 21 and a narrow support plate 33. The wide support plate 21 and the narrow support plate 33 can be detachably installed on the square plate 11, and the wide support plate 21 is provided with parallel plates. Tetrahedral fixed knife 22;

A rectangular moving plate 23, the middle of the rectangular moving plate 23 is connected to the air cylinder 24, the air cylinder 24 drives the rectangular moving plate 23 to move up and down relative to the support connecting member 1; the rectangular moving plate 23 is located in the middle Both sides are connected to the square plate 11 through two single-head threaded guide rods 31, and linear bearings 32 are sleeved between the rectangular moving plate 23 and the two single-head threaded guide rods 31;

The "L"-shaped curved cutter bar 25 is a lever structure, the curved cutter bar 25 is arranged on the front surface of the support connection member 1 , and the middle part of the curved cutter bar 25 is rotated through the stepped shaft pin 26 Both ends are connected to the wide support plate 21 and the narrow support plate 33, and the first end of the curved knife rod 25 is provided with a triangular prism rotating knife 27; The moving plate 23 is lowered to the bottom, and the lower plane of the triangular prism rotating knife 27 is in a horizontal position; after the supporting and connecting member 1 moves along the Y-axis direction or/and the Z-axis direction, the triangular prism rotating knife 27 is driven. Press the lid of the corrugated carton, and insert the triangular prism rotary knife 27 under the packing belt of the corrugated carton (as shown in Figure 8, the packing belt is twisted and deformed, and the pressing depth of the triangular prism rotary knife 27 is The distance between the two double-dotted lines, the pressing depth is related to the inclination of the triangular prism rotary knife 27 and the packing bandwidth);

Two-force rod 28, the two-force rod 28 is arranged obliquely, and the two ends of the two-force rod 28 are hingedly connected to the hinge seat at the second end of the curved knife bar 25 and the double ear hinge seat 30 on the rectangular moving plate;

As shown in FIGS. 1 , 4 , 5 and 8 , when the piston rod of the air cylinder 24 is retracted and the rectangular moving plate 23 is raised, the two-force rod 28 drives the curved cutter bar 25 to surround the stepped shaft pin 26 Rotate, so that the triangular prism rotary knife 27 cooperates with the parallelogram fixed knife 22 to cut the packing tape of the corrugated box.

As shown in FIG. 2 , in an embodiment of the present invention, the stepped shaft pin 26 includes a first section with a small shaft diameter and a second section with a large shaft diameter, and the first section of the stepped shaft pin 26 is inserted into the narrow support In the hole of the plate 33, the second section of the stepped shaft pin 26 is inserted into the hole of the wide support plate 21; the middle hole of the curved cutter bar 25 is sleeved on the first section of the stepped shaft pin 26 and abuts the second section of the stepped shaft pin 26. , a limiting spacer 29 is sleeved on the first section of the stepped shaft pin 26 between the curved cutter bar 25 and the narrow support plate 33 .

As shown in Figures 1, 5 and 6, in one embodiment of the present invention, the first end of the curved cutter bar 25 and the triangular prism rotating cutter 27 are welded together by brazing; the three The upper slope of the prismatic rotary knife 27 is the rake surface of the grinding cutting edge.

As shown in FIGS. 2 and 5 , the parallelogram fixed knife 22 is obliquely arranged in front of the wide support plate 21 , and the lower slope of the parallelogram fixed knife 22 is the rake surface for grinding the shearing edge.

As shown in FIG. 8 , the frictional force generated by the shearing force of the cutting edge of the triangular prism rotating knife 27 and the cutting edge of the parallelepiped fixed knife 22 prevents the packing belt of the corrugated box from moving.

As shown in FIGS. 6 and 7 , the cutting member 5 is disposed obliquely on the back of the wide support plate 21 and is fixed by screws; in the cutting member 5 , the flat plate 51 and the slotted flat plate 53 are brazed. They are welded together and fixed on the wide support plate 21 by screws in an integral form. The blade 52 is inserted into the square hole of the welding piece composed of the flat plate 51 and the slotted flat plate 53 with a clearance fit, and is fixed on the flat plate 51 and the flat plate 51 with fine-thread screws. On the welded part composed of the slotted flat plate 53 , the cutting member 5 cuts the sealing tape of the corrugated box through the blade 52 .

Embodiment 2

The embodiment of the present invention discloses the second structure of the packing tape and sealing tape cutting device for unsealing the carton. The difference from the first embodiment is that the realization structure of the cutting part 2 and the installation position of the cutting part 5 are different. And the width dimension of the rectangular mobile plate 23 as shown in FIGS. 3 and 12 is different. Specifically, as shown in FIGS. 9-13 , the shearing component 2 includes a right-angle section cutter bar 35 , the right-angle section cutter bar 35 can be detachably installed on the square plate 11 , and the right-angle section cutter bar 35 The lower end is provided with a large flat fixed knife 34; after the supporting and connecting member 1 moves along the Y-axis direction or/and the Z-axis direction, the large flat fixed knife 34 is driven to press the box cover of the corrugated box, and the large flat fixed knife 34 is driven to press the box cover of the corrugated carton box and make the large flat fixed knife 34. The plane fixed knife 34 is inserted under the packing belt of the corrugated box;

A rectangular moving plate 23, the rectangular moving plate 23 lifts and lowers relative to the supporting and connecting member 1;

A movable knife support plate 37, the movable knife support plate 37 is connected to the rectangular moving plate 23, and the movable knife support plate 37 is provided with an inclined blade movable knife 36, and the inclined blade movable knife 36 is fixed to the movable knife support plate by screws 37;

The pressure rod support seat 40, the pressure rod support seat 40 is connected to the movable knife support plate 37;

The tooth end face pressure rod 38, a linear bearing 32 is sleeved between the tooth end face pressure rod 38 and the pressure rod support seat 40, the tooth end face pressure rod 38 moves up and down in the hole of the linear bearing 32, the tooth end face pressure rod 38 moves up and down The end face pressure rod 38 is restricted from moving downward in the axial direction by screws and washers; a compression spring 39 is sleeved on the tooth end face pressure rod 38, and the two ends of the compression spring 39 are respectively stepped by the tooth end face pressure rod 38. and the lower part of the pressure rod support seat 40 is limited and preloaded;

In the initial state, the air cylinder 24 does not act, and the rectangular moving plate 23 is in the uppermost position; during the shearing process, the piston rod of the air cylinder 24 extends, and when the rectangular moving plate 23 descends, it drives the movable knife support plate 37 and the inclined blade. The moving edge knife 36 descends, overcoming the elastic force of the compression spring 39, so that the tooth end surface of the tooth end surface pressing rod 38 presses the packing belt of the corrugated box on the large flat fixed knife 34, and makes the inclined edge moving knife 36 cooperates with the large flat fixed knife 34 to cut off the packing tape of the corrugated box.

The middle of the rectangular moving plate 23 is connected to the cylinder 24 , and both sides of the rectangular moving plate 23 located in the middle are connected to the square plate 11 through two single-threaded guide rods 31 , and the rectangular moving plate 23 Linear bearings 32 are sleeved between the two single-end thread guide rods 31;

As shown in Figures 11 and 13, the large flat fixed knife 34 and the right-angle section cutter bar 35 are welded together by brazing; the upper plane of the large flat fixed knife 34 is the front knife for grinding the shearing edge surface; the large plane fixed knife 34 is subjected to the force of the compression spring 39 and the shear force generated by the inclined blade movable knife 36, so the right angle section knife rod 35 with good rigidity is selected; as shown in Figure 9, the large plane fixed knife 34 As shown in Figure 13, the left side slope of the large plane fixed knife 34 gradually increases in width, which is convenient for the large plane fixed knife 34 to be inserted under the packing belt of the corrugated box.

As shown in FIGS. 11 and 13 , the lower inclined surface of the beveled movable knife 36 is the rake surface of the grinding shearing edge.

As shown in FIG. 9 , the cutting member 5 is disposed obliquely in front of the right-angle section cutter bar 35; in the cutting member 1, the flat plate 51 and the slotted flat plate 53 are welded together by brazing. And the integral form of the welding piece is fixed on the right-angle section cutter bar 35 by screws. The blade 52 is inserted into the square hole of the welding piece composed of the flat plate 51 and the slotted flat plate 53 with a clearance fit. On the welded piece composed of the flat plate 53 , the cutting member 5 cuts the sealing tape of the corrugated box through the blade 52 .

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, other different forms of changes or modifications can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (8)

1. a packing tape sealing tape cutting device for unsealing carton, is characterized in that: comprise support connecting part, the shearing part and cutting part that are all installed on the described support connecting part, in the described support connecting part; The diamond-shaped mounting plate is installed at the end of the robot or the execution end of the numerical control device, and the diamond-shaped mounting plate and the square plate are connected as a whole by two double-ended threaded tie rods; the robot end or numerical control device provides X-axis rotation, Z-axis rotation, X-axis rotation axis direction, Y-axis direction, Z-axis direction; when the supporting and connecting member rotates along the X-axis, switch the shearing member to carry out the cutting and packing tape process or the cutting member to carry out the cutting and sealing tape process; After the supporting and connecting member moves along the X-axis direction, the Y-axis direction, the Z-axis direction, and the Z-axis rotation, one or more movements are combined, and the shearing member is supported to reach the goal of cutting the corrugated box packing tape. position, or support the cutting member to reach the target position for cutting the corrugated box sealing tape; or the supporting and connecting member moves along the X-axis direction, the Y-axis direction, and the Z-axis direction. One or more movement combinations Then, provide power for the cutting member to cut the sealing tape of the corrugated carton; the target position of the cutting member is the position where the corrugated box packing tape is cut, and the target position of the cutting member is to cut the The starting position of the corrugated box sealing tape; The shearing component includes a wide support plate and a narrow support plate, the wide support plate and the narrow support plate can be detachably installed on the square plate, and the wide support plate is provided with a parallelepiped fixed knife; a rectangular moving plate, the rectangular moving plate lifts and lowers relative to the support connecting member; "L"-shaped curved cutter bar, the curved cutter bar is a lever structure, the curved cutter bar is arranged on the front side of the support and connection part, and the middle part of the curved cutter bar is connected to the A wide support plate and a narrow support plate, the first end of the curved knife rod is provided with a triangular prism rotating knife; in the initial state, the cylinder piston rod extends to the farthest position, the rectangular moving plate descends to the bottom, and the triangular prism The lower plane of the rotary knife is in a horizontal position; after the supporting and connecting parts move along the Y-axis direction or/and the Z-axis direction, the triangular prism rotary knife is driven to press the box cover of the corrugated box, and the triangular prism rotates The knife is inserted under the packing belt of the corrugated box; Two-force rod, the two-force rod is arranged obliquely, and the two ends of the two-force rod are respectively hinged to the hinge seat at the second end of the curved cutter bar and the double ear hinge seat on the rectangular moving plate; When the cylinder piston rod is retracted and the rectangular moving plate is raised, the curved cutter rod is driven by the two-force rod to rotate around the stepped shaft pin, so that the triangular prism rotating knife and the parallelogram fixed knife are Cooperate with cutting the packing tape of the corrugated box; Alternatively, the shearing component includes a right-angle section cutter bar, the right-angle section cutter bar can be detachably installed on the square plate, and a large flat fixed knife is provided at the lower end of the right-angle section cutter bar; After the movement in the Y-axis direction or/and the movement in the Z-axis direction, the large flat fixed knife is driven to press against the box cover of the corrugated box, and the large flat fixed knife is inserted under the packing belt of the corrugated box; a rectangular moving plate, the rectangular moving plate lifts and lowers relative to the support connecting member; a movable knife support plate, the movable knife support plate is connected to the rectangular moving plate, and the movable knife support plate is provided with an inclined-blade movable knife; a pressure rod support seat, the pressure rod support seat is connected to the movable knife support plate; Tooth end face pressing rod, a linear bearing is set between the tooth end face pressing rod and the pressing rod support seat, the tooth end face pressing rod moves up and down in the linear bearing hole, and the tooth end face pressing rod is supported by screws, The gasket restricts the axial downward movement; a compression spring is sleeved on the pressure rod of the tooth end face, and the two ends of the compression spring are respectively restricted by the stepped surface of the pressure rod of the tooth end face and the lower part of the support seat of the pressure rod. tight; In the initial state, the cylinder does not act, and the rectangular moving plate is at the uppermost position; during the shearing process, the piston rod of the cylinder extends, and when the rectangular moving plate descends, it drives the movable knife support plate and the inclined-blade movable knife to descend. Overcome the elastic force of the compression spring, so that the tooth end face of the tooth end face pressing rod presses the packing belt of the corrugated box on the large flat fixed knife, and makes the oblique blade movable knife cooperate with the large flat fixed knife to cut off The packing tape of the corrugated box. 2. The packing tape sealing tape cutting device for unsealing carton boxes according to claim 1, wherein the step shaft pin comprises a first section of a small shaft diameter and a second section of a large shaft diameter, and the The first section of the stepped shaft pin is inserted into the hole of the narrow support plate, and the second section of the stepped shaft pin is inserted into the hole of the wide support plate; the middle hole of the curved cutter bar is sleeved on the first section of the stepped shaft pin and abuts against In the second section, the first section of the stepped shaft pin is sleeved with a limiting spacer between the curved cutter bar and the narrow support plate. 3. The packing tape-sealing tape cutting device for unsealing a carton according to claim 1, wherein the first end of the curved knife bar and the triangular prism rotating knife are welded by brazing. Together; the upper inclined surface of the triangular prism rotary knife is the rake surface of the grinding cutting edge. 4. The packing tape sealing tape cutting device for unsealing a carton according to claim 1, wherein the parallelogram fixed knife is obliquely arranged in front of the wide support plate, and the parallelogram fixed knife The lower bevel is the rake face of the ground shearing edge. 5. The packing tape-sealing tape cutting device for unsealing a carton according to claim 1, characterized in that: the large plane fixed knife and the right-angle section cutter rod are welded together by brazing; the The upper plane of the large flat fixed knife is the rake face of the grinding cutting edge. 6 . The packing tape sealing tape cutting device for unsealing a carton according to claim 1 , wherein the lower inclined surface of the inclined-blade movable knife is the rake surface for sharpening the shearing edge. 7 . 7. The packing tape sealing tape cutting device for unsealing a carton according to claim 1, wherein the cutting part is obliquely arranged on the back of the wide support plate or on the side of the right-angle section cutter bar. Front; in the cutting part, the flat plate and the slotted flat plate are welded together by brazing, and are fixed on the right-angle cross-section shank by screws in an integral form, and the blade is inserted into the welding formed by the flat plate and the slotted flat plate in a clearance fit. In the square hole of the piece, it is fixed on the welding piece composed of a flat plate and a slotted flat plate with a fine-toothed screw, and the cutting part cuts the sealing tape of the corrugated box through the blade. 8. The packing tape sealing tape cutting device for unsealing a carton according to claim 1, characterized in that: the middle of the rectangular moving plate is connected to the cylinder, and both sides of the rectangular moving plate are located in the middle. The square plate is connected to the square plate by two single-end thread guide rods, and linear bearings are sleeved between the rectangular moving plate and the two single-end thread guide rods.

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