Packaging material removing device and using method thereof

Abstract

The invention provides a packaging material removing device. The packaging material removing device comprises a first driving mechanism; the cutter assembly is mounted on the first driving mechanism and can move in the first direction under the action of the first driving mechanism; a second driving mechanism; the bracket assembly is mounted on the second driving mechanism; and at least one attachment member mounted on the bracket assembly and attachable to the packaging material; the packaging machine is characterized in that the knife assembly comprises a cutting knife and a knife holder, the cutting knife is installed in the knife holder, the knife holder comprises a hook part, a cutting edge of the cutting knife is located at the root of the hook part and located in the outer end of the hook part, the hook part of the knife holder can be inserted into the gap, and the outer end of the hook part of the knife holder is located between the packaged content and the cutting edge of the cutting knife. As the knife assembly moves in the first direction under the action of the first driving component, the cutting knife can preferably cut the packaging material. A method of cutting a packaging material using the packaging material removal device is also provided.

Description

Technical Field

[0001] The present invention relates to the field of packaging machinery, and in particular to a packaging material removal device and a use method thereof. Background Art

[0002] In the industrial field, materials such as raw materials are usually provided in the form of packaging, such as kraft paper. In order to remove the packaging materials of the materials, an automatic packaging material removal device can be used. In this device, the packaging material cutting part uses a suction cup to pull the packaging material to make it tight, and then the cylinder drives the blade to move horizontally from the outside to cut the packaging material to complete the unpacking. Due to the pressure between the blade and the packaging material, the packaging material itself has strong toughness, which will cause a part of the packaging material to be bounced off by the blade and break the restraint of the suction cup, lose the pulling force and cannot be cut, resulting in the interruption of the unpacking process. Therefore, it is necessary to improve the existing automatic packaging material removal device. Summary of the invention

[0003] The object of the present invention is to solve the above technical problems and to provide a packaging material removal device and a method of using the same, which can effectively cut off the packaging material, thereby reducing the interruption of the unpacking process caused by the failure to cut the packaging material.

[0004] Another object of the present invention is to provide a packaging material removal device and a method of using the same, which will not damage items inside the packaging material.

[0005] The present invention provides a packaging material removal device for cutting and removing packaging materials wrapped around the outside of a package, the packaging material removal device comprising: a first driving mechanism, the first driving mechanism defining a first direction along its length; a knife assembly, the knife assembly being mounted on the first driving mechanism and being able to move along the first direction under the action of the first driving mechanism; a second driving mechanism, arranged near the first driving mechanism; a bracket assembly, the bracket assembly being mounted on the second driving mechanism and being able to move near the first driving mechanism along a second direction perpendicular to the first direction under the action of the second driving mechanism; and at least one attachment mounted on the bracket assembly, which can make the attachment move closer to or away from the package when the bracket assembly moves along the second direction under the action of the second driving mechanism, and the attachment The attachment is capable of being attached to the packaging material; it is characterized in that the knife assembly comprises a cutting knife and a knife holder, the cutting knife is installed in the knife holder, wherein the knife holder comprises a hook portion, the blade of the cutting knife is located at the root of the hook portion and inside the outer end portion of the hook portion, and after the attachment is attached to the packaging material, the attachment is moved away from the package along the second direction by the second driving mechanism, thereby forming a gap between the packaging material and the contents of the package, the hook portion of the knife holder can be inserted into the gap, and the outer end portion of the hook portion of the knife holder is located between the contents of the package and the blade of the cutting knife, as the knife assembly moves along the first direction under the action of the first driving component, the cutting knife can cut the packaging material so as to remove the packaging material from the package.

[0006] Preferably, the outer end of the hook has a convex curved shape and will abut against the contents of the package when the hook is inserted into the gap.

[0007] Preferably, the maximum width of the gap is D1, and the maximum width D2 of the hook is designed to be equal to or slightly larger than the maximum width D1 of the gap, so that when the hook is inserted into the gap, the packaging material can be close to the blade to better complete the cutting action.

[0008] Preferably, the tip of the hook portion has a shape that is convenient for insertion into the gap.

[0009] Preferably, the blade is arranged obliquely in the blade seat.

[0010] Preferably, the knife assembly includes a first knife seat mounting member and a second knife seat mounting member, wherein the first knife seat mounting member and the second knife seat mounting member are pivotally connected via a pivot, the first knife seat mounting member is fixed to the first driving mechanism, and on one side of the pivot, a spring is arranged between the first knife seat mounting member and the second knife seat mounting member, and the knife seat is mounted on the second knife seat mounting member on the other side of the pivot, so that when the hook portion of the knife seat is pressed by the contents of the package, the knife seat pushes the second knife seat mounting member to compress the spring.

[0011] Preferably, the knife assembly also includes a threaded top screw, which is threadedly engaged in a threaded hole in the second knife seat mounting component on the other side of the pivot, and the initial angle formed by the first knife seat mounting component and the second knife seat mounting component around the pivot under the action of the spring can be adjusted by adjusting the length of the top screw extending from the threaded hole.

[0012] Preferably, the knife assembly also includes an adjusting block, and the knife holder is mounted on the second knife holder mounting piece through the adjusting block, and the adjusting block includes at least one first mounting hole and at least one second mounting hole, wherein the first mounting hole cooperates with at least one first long hole on the knife holder extending along the second direction, and the knife holder is detachably fixed to the adjusting block, so that the position of the knife holder can be adjusted in the second direction; the second mounting hole cooperates with at least one long hole on the second knife holder mounting piece extending along a third direction, and the third direction is perpendicular to the first and second directions, and the adjusting block is detachably fixed to the second knife holder mounting piece, so that the position of the knife holder fixed on the adjusting block can be adjusted in the third direction.

[0013] Preferably, the knife assembly further comprises a knife box for mounting the cutting knife, the knife box being mounted in the knife seat. Preferably, the knife box is sheet-shaped and inserted into a slot of the knife seat, and the knife box is fixed to the knife seat by screws.

[0014] Preferably, the first driving mechanism is composed of a rodless cylinder, which includes: a frame, a sliding rod fixed on the frame, and a slide table capable of sliding on the sliding rod, wherein the sliding rod extends along the first direction and the knife assembly is mounted on the slide table.

[0015] Preferably, the second driving mechanism is composed of a cylinder. Preferably, the second driving mechanism is composed of a slide cylinder, and the slide cylinder comprises: a fixed part and a sliding part, and the sliding part can slide along the second direction, wherein the bracket assembly is installed on the sliding part.

[0016] Preferably, the bracket assembly includes a support member, and the attachment is installed on the support member. Preferably, the support member includes reinforcing ribs and / or at least one through hole, the reinforcing ribs are used to enhance the strength of the support member, and the through holes are used to reduce the weight of the support member, thereby facilitating its movement along the second direction.

[0017] Preferably, the bracket assembly comprises: a support member, which is mounted on the second driving mechanism and can move along the second direction under the action of the second driving mechanism; a flat plate, used to locally flatten the packaging material; at least one connecting rod, one end of which is connected to the support member and the other end is connected to the flat plate, and the connecting rod extends along the second direction; at least one attachment rod, the attachment is mounted on one end of the attachment rod, and the attachment rod extends along the second direction; an attachment mounting plate, the other end of the attachment rod is mounted on the attachment mounting plate; at least one bushing, the bushing is mounted on the attachment On the mounting plate, the connecting rod passes through the shaft sleeve, so that the attachment mounting plate can slide along the connecting rod; and a third driving mechanism, which is mounted on the attachment mounting plate and is used to drive the attachment mounting plate to move along the connecting rod in the second direction, wherein, when the support moves toward the package along the second direction under the action of the second driving mechanism, the flat plate can abut against the packaging material, thereby locally flattening the packaging material, and the flat plate includes at least one opening, which is aligned with the attachment, so that the attachment can extend or retract from the flat plate through the opening along the second direction.

[0018] Preferably, the other end of the attachment rod is mounted on the attachment mounting plate by a spring.

[0019] Preferably, the size and position of the flat plate are arranged so that: when the hook portion of the knife holder is inserted into the gap between the packaging material and the content, and the knife assembly moves along the first direction to cut the packaging material, the lower surface of the knife holder can abut against the upper edge of the flat plate, so that the blade of the cutting knife forms a scissors with the upper edge of the flat plate, thereby applying a shear force to the packaging material located in the hook portion, which is conducive to cutting.

[0020] Preferably, the third driving mechanism is composed of a cylinder.

[0021] Preferably, the attachment mounting plate comprises at least one mounting hole, and the other end of the attachment rod is fixed in the mounting hole.

[0022] Preferably, the attachment means is a suction cup.

[0023] The present disclosure provides a method for cutting packaging material of a package using the packaging material removal device according to the aforementioned method, characterized in that the method includes the following steps: arranging the packaging material removal device near the package so that the first direction defined by the first drive mechanism is parallel to the direction of the cutting line required to be formed on the packaging material, and so that the knife assembly is located outside one end of the packaging material, wherein the attachment is in a position away from the package, starting the second drive mechanism so that the support assembly moves toward the package in the second direction until the attachment contacts and attaches to the packaging material, starting the second drive mechanism again so that the attachment together with the packaging material attached thereto moves a certain distance away from the package in the second direction, thereby forming a gap between the packaging material and the contents of the package, starting the first drive device so that the knife assembly moves toward the package in the first direction, so that the hook portion of the knife holder is inserted into the gap, and as the knife assembly continues to move in the first direction, the cutting knife of the knife assembly cuts the packaging material until a penetrating cutting line is formed on the packaging material.

[0024] Preferably, in the step of the bracket assembly moving along the second direction toward the package, the flat plate abuts against the packaging material, thereby locally flattening the packaging material; the third driving mechanism is started to move the attachment mounting plate toward the package, so that the attachment extends through the opening of the flat plate along the second direction, so that the attachment contacts and attaches to the packaging material.

[0025] Preferably, during contact and attachment of the attachment to the packaging material, the spring of the attachment rod is compressed.

[0026] Preferably, in the step of forming the gap, the third driving mechanism is started so that the attachment together with the packaging material attached thereto moves a certain distance along the second direction away from the contents of the package, thereby forming a gap between the packaging material and the contents of the package. Preferably, the attachment is retracted through the opening of the flat plate.

[0027] Preferably, in the step of forming the gap, a spring of the attachment rod is restored from a compressed state.

[0028] Preferably, in the step of forming the cutting line, the blade forms a pair of scissors with the upper edge of the flat plate, thereby facilitating the removal of the packaging material.

[0029] The present invention can achieve the following beneficial effects: by hooking the packaging material, the packaging material is prevented from slipping out of the cutting range; at the same time, the arc shape of the front end of the knife holder contacts the packaging content and rebounds itself to make the packaging material close to the blade, so as to better complete the cutting action; the knife tip is hidden and will not cut the packaging content. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings illustrate preferred embodiments of the present invention, in which:

[0031] Figure 1-3 Showing three-dimensional views of different angles of a packaging material removal device according to the present disclosure;

[0032] Figure 4 A perspective view showing a first drive mechanism;

[0033] Figure 5 An exploded view of the knife assembly is shown;

[0034] Figure 6 Shows the assembled cutting knife, knife box and knife holder;

[0035] Figure 7-8 Two perspective views showing the knife assembly assembled;

[0036] Fig. 9 An exploded view of the bracket assembly is shown;

[0037] Fig.10 , Fig.11 is a top view of the packaging material removal device according to the present disclosure, illustrating a process of forming a gap between the packaging material and the contents of the package; and

[0038] Fig.12 This is a three-dimensional image after the gap is formed. DETAILED DESCRIPTION

[0039] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully explain the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0040] See also Figure 1-Figure 3 , which shows a packaging material removal device 1 according to the present disclosure, for cutting so as to remove the packaging material W wrapped outside the package P (see Figure 10-12), the packaging material removal device 1 includes: a first driving mechanism 2, which defines a first direction along the length direction of the first driving mechanism 2 (for example, the left-right direction of the packaging material removal device 1); a knife assembly 3, which is installed on the first driving mechanism 2 and can move along the first direction under the action of the first driving mechanism 2; a second driving mechanism 4, which is arranged near the first driving mechanism 2; a bracket assembly 5, which is installed on the second driving mechanism 4 and can move near the first driving mechanism 2 along a second direction perpendicular to the first direction (for example, the front-rear direction of the packaging material removal device 1) under the action of the second driving mechanism 4; and at least one attachment 6 installed on the bracket assembly 5, when the bracket assembly 5 moves along the second direction under the action of the second driving mechanism 4, the attachment 6 can be moved close to or away from the package P, and the attachment 6 can be attached to the packaging material W (see Figure 10-12 ), for example, the attachment is the suction cup 6 shown in the embodiment of the figure.

[0041] See also Figure 5-Figure 8 , showing the knife assembly 3 according to the present disclosure. The knife assembly 3 includes a cutting knife 35 and a knife seat 37, wherein the cutting knife 35 is installed in the knife seat 37, wherein the knife seat 37 includes a hook portion 371, and the blade 351 of the cutting knife 35 is as shown in FIG. Figure 6 The blade 351 is located at the root of the hook 371 and inside the outer end 3711 of the hook 371, that is, the outer end 3711 contains the blade 351 inside the blade holder 37 so that the blade 351 is not exposed. The blade 351 is preferably arranged obliquely. After the suction cup 6 is adsorbed on the packaging material W, the suction cup 6 is moved away from the package P along the second direction by the second driving mechanism 4, so that a gap G is formed between the packaging material W and the contents of the package P (see Fig.11 , 12 ), the hook portion 371 of the knife holder 37 can be inserted into the gap G, and the outer end portion 3711 of the hook portion 371 of the knife holder 37 is located between the content of the package P and the blade 351 of the cutting knife 35, as the knife assembly 3 moves along the first direction under the action of the first driving component 2, the cutting knife 35 can cut the packaging material W so as to remove the packaging material W from the package P.

[0042] Preferably, if Figure 6 As shown, the outer end portion 3711 of the hook portion 371 has an outwardly convex arc shape. When the hook portion 371 is inserted into the gap G, the outer end portion will abut against the content of the package P.

[0043] Preferably, the tip of the hook portion 371 has a shape that is convenient for being inserted into the gap G.

[0044] Preferably, if Figure 6 and Fig.11 As shown, the maximum width of the gap G is D1, and the maximum width D2 of the hook portion 371 is designed to be approximately equal to or slightly larger than the maximum width D1 of the gap G. Therefore, when the hook portion 371 is inserted into the gap G, the packaging material W can fit closely against the blade to better complete the cutting action.

[0045] Preferably, the knife assembly 3 further comprises a knife box 36 for mounting the cutting knife 35, and the knife box 36 is mounted in the knife seat 37. Figure 5 , Figure 6 As shown, the knife box 36 is in sheet shape and is inserted into the narrow slot 372 of the knife seat 37 . The knife seat 37 includes at least one through hole 373 , and a screw passes through the through hole 373 , thereby fixing the knife box 36 on the knife seat 37 .

[0046] According to one embodiment of the present disclosure, the knife assembly 3 further includes a first knife seat mounting member 31 and a second knife seat mounting member 32, wherein the first knife seat mounting member 31 and the second knife seat mounting member 32 are pivotally connected via a pivot 39, and the first knife seat mounting member 31 is fixed to the first driving mechanism 2. And on one side of the pivot 39, a spring 33 is arranged between the first knife seat mounting member 31 and the second knife seat mounting member 32, and the knife seat 37 is mounted on the second knife seat mounting member 32 on the other side of the pivot 39, so when the hook portion 371 of the knife seat 37 is pressed by the contents of the package P, the knife seat 37 pushes the second knife seat mounting member 32 to compress the spring 33.

[0047] Preferably, the knife assembly 3 also includes a threaded top screw 34, and the top screw 34 is threadedly engaged in the threaded hole 321 in the second knife seat mounting member 32 on the other side of the pivot 39. By adjusting the length of the top screw 34 extending from the threaded hole 321, the initial angle formed by the first knife seat mounting member 31 and the second knife seat mounting member 32 around the pivot 39 under the action of the spring 32 can be adjusted.

[0048] Preferably, the knife assembly 3 further comprises an adjusting block 38, through which the knife seat 37 is mounted on the second knife seat mounting member 32, and the adjusting block 38 comprises at least one first mounting hole 381 and at least one second mounting hole 382. The first mounting hole 381 cooperates with at least one first long hole 374 on the knife seat 37 extending substantially along the second direction, the knife seat 37 is fixed to the adjusting block 38 by screws, and the position of the knife seat 37 can be adjusted in the second direction; the second mounting hole 382 cooperates with at least one long hole 322 on the second knife seat mounting member 32 extending substantially along the third direction, the third direction (for example, the up-down direction of the packaging material removal device 1) being perpendicular to the first and second directions, the mounting seat is fixed to the second knife seat mounting member 32 by screws, and the position of the knife seat 37 fixed on the adjusting block 38 can be adjusted in the third direction. As known to those skilled in the art, the positions of the first and second mounting holes and the first and second long holes can be interchanged, for example, the first mounting hole is arranged on the knife seat 37, and the first long hole is arranged on the adjusting block 38.

[0049] In one embodiment, the first driving mechanism 2 is composed of a rodless cylinder. Figure 4 The rodless cylinder comprises: a frame 21, a slide bar 22 fixed on the frame 21, and a slide table 23 slidable on the slide bar 22, wherein the slide bar 22 extends along the first direction, and the knife assembly 3 is mounted on the slide table 23. The frame 21 can be fixed on a movable component not shown in the figure, and the movable component is used to move the packaging material removal device 1 according to the present disclosure as a whole.

[0050] In one embodiment, the second driving mechanism 4 is composed of a cylinder. Figure 1-Figure 3 The second driving mechanism 4 is composed of a slide cylinder, which includes a fixed portion 41 and a sliding portion 42, wherein the sliding portion 42 can slide along the second direction, wherein the bracket assembly 5 is mounted on the sliding portion 42. The fixed portion 41 can be mounted on a movable component on which the frame 21 is mounted.

[0051] In one embodiment, the bracket assembly 5 includes a support member 51, which is fixed on the sliding portion 42 of the second driving mechanism 4, and the attachment 6 is fixedly installed on the support member 51. When the support member 51 moves along the second direction under the action of the second driving mechanism 4, the attachment 6 can approach and attach to the packaging material W of the package P, and move away from the package P while being attached to the packaging material W, thereby forming the gap G between the packaging material W and the contents.

[0052] Preferably, the support member 51 includes a reinforcing rib 511 for enhancing the strength of the support member 51; the support member 51 may also include at least one through hole 512 for reducing the weight of the support member 51, thereby facilitating its movement along the second direction.

[0053] Preferably, see Fig. 9 The support assembly 5 also includes: a flat plate 53 for locally flattening the packaging material; at least one connecting rod 54, one end of the connecting rod 54 is connected to the support member 51, and the other end is connected to the flat plate 53, and the connecting rod 54 extends along the second direction; at least one attachment rod 52, the attachment 6 is mounted on one end of the attachment rod 52, and the attachment rod 52 extends along the second direction; an attachment mounting plate 55, the other end of the attachment rod 52 is mounted on the attachment mounting plate 55; at least one shaft sleeve 56, the shaft sleeve 56 is mounted on the attachment mounting plate 55, the connecting rod 54 passes through the shaft sleeve 56, so that the attachment mounting plate 55 can slide along the connecting rod 54; and a third driving mechanism 57, which is mounted on the attachment mounting plate 55 and is used to drive the attachment mounting plate 55 to move along the connecting rod 54 in the second direction.

[0054] When the support member 51 moves along the second direction under the action of the second driving mechanism 4, the flat plate 53 can abut against the packaging material W, thereby partially flattening the packaging material. In addition, the flat plate 53 includes at least one opening 531, and the opening 531 is aligned with the attachment 6, so that the attachment 6 can extend from or retract from the flat plate through the opening 531 along the second direction.

[0055] Preferably, the other end of the attachment rod 52 is mounted on the attachment mounting plate 55 via a spring (not shown), and when the suction cup 6 is pressed and adsorbed on the packaging material W, the spring is compressed.

[0056] Preferably, the size and position of the flat plate 53 are set so that: when the hook portion 371 of the knife seat 37 is inserted into the gap G between the packaging material W and the contents, and the knife assembly 3 moves along the first direction to cut the packaging material W, the lower surface of the knife seat 37 can abut against the upper edge of the flat plate 53, so that the blade 351 of the cutting knife 35 forms a scissors with the upper edge of the flat plate 53, thereby applying a shear force to the packaging material W located in the hook portion 371, which is conducive to cutting.

[0057] In one embodiment, the third driving mechanism 57 is composed of a cylinder.

[0058] In one embodiment, the attachment mounting plate 55 includes at least one mounting hole 551 , and the other end of the attachment rod 52 is fixed in the mounting hole 551 .

[0059] The following reference Figure 10-12 A process of cutting the packaging material W of the package P using the packaging material removing device 1 according to the present disclosure will be described.

[0060] First, the packaging material removal device 1 is arranged near the package P, so that the first direction defined by the first driving mechanism 2 is parallel to the direction of the cutting line to be formed on the packaging material W, and the knife assembly 3 is located outside one end of the packaging material W, so that when a gap G is formed between the packaging material W and the content of the package P, the knife assembly 3 is inserted into the gap G, wherein the second driving mechanism 4 and the third driving mechanism 57 make the attachment 6 located away from the package P. For example, in the case where Fig.12 A horizontal cutting line is formed on the packaging material W of the package P arranged as shown, so that the packaging material W is removed, the first direction is arranged to be a horizontal direction, and the knife assembly 3 is aligned with one side of the packaging material W.

[0061] Then, the second driving mechanism 4 is started, so that the support assembly 5 moves toward the package P along the second direction until the flat plate 53 abuts against the packaging material W, thereby partially flattening the packaging material W. The third driving mechanism 57 is started, so that the attachment mounting plate 55 moves toward the package P, thereby causing the attachment (for example, suction cup) 6 to extend through the opening 531 of the flat plate 53 along the second direction, and the suction cup 6 contacts the packaging material W. As the attachment mounting plate 55 moves further, the spring of the attachment mounting rod 52 is compressed until the suction cup 6 is adsorbed on the packaging material W with a certain pressure. Fig.10 shown.

[0062] Then, the second driving mechanism 4 is activated to move the suction cup 6 together with the packaging material W sucked thereon away from the content of the package P in the second direction, and the third driving mechanism 57 is activated to move the suction cup 6 away from the content of the package P until a predetermined gap G is formed between the packaging material W and the content of the package P, during which the spring of the attachment mounting rod 52 is restored to its free length, and the suction cup 6 is preferably retracted through the opening 531 of the flat plate 53. Fig.11 , Fig.12 In this step, the second driving mechanism 4 and the third driving mechanism 57 can be started simultaneously.

[0063] In this state, the first driving device 2 is started, so that the knife assembly 3 moves toward the package P along the first direction, so that the hook portion 371 of the knife seat 37 is inserted into the gap G. As the knife assembly 3 continues to move along the first direction, the blade 351 and the upper edge of the flat plate 53 form a pair of scissors, which advantageously cuts the packaging material W until a through cutting line is formed on the packaging material W, thereby facilitating the removal of the packaging material W. When the hook portion 371 is inserted into the gap G, the knife seat 37 is pressed by the contents of the package P, thereby pushing the second knife seat mounting member 32 to compress the spring 33, so that the hook portion 371 is relative to the spring 33. Fig.11 The position shown in FIG. 1 is slightly retracted inwardly and elastically rests against the contents of the package P under the action of the spring 33.

[0064] From the above description, it can be seen that the packaging material removal device 1 disclosed in the present invention has the following advantages:

[0065] 1. The first, second and third driving devices can be realized by cylinders, which have simple structure and low cost;

[0066] 2. The hook of the knife assembly can prevent the packaging material from slipping out of the cutting range by inserting into the gap between the packaging material and the contents. At the same time, the arc-shaped outer edge abuts against the packaging contents. The second knife seat mounting member that can be elastically pivoted can make the packaging material close to the blade to better complete the cutting action, thereby effectively reducing the interruption of the unpacking process caused by the packaging material not being cut;

[0067] 3. The hook portion of the knife assembly hides the blade, so the package contents can be kept intact during the cutting process.

[0068] Having provided the description of the preferred embodiments, it will be apparent that modifications may be made by a person skilled in the art without thereby departing from the scope of the invention as defined by the following claims.

Claims

1. A packaging material removal device, used for cutting and removing packaging material wrapped outside a package, the packaging material removal device comprising: a first drive mechanism, the first drive mechanism defining a first direction along a length thereof; a knife assembly, wherein the knife assembly is mounted on the first driving mechanism and can move along the first direction under the action of the first driving mechanism; a second driving mechanism, arranged near the first driving mechanism; a bracket assembly, the bracket assembly being mounted on the second driving mechanism and being capable of moving near the first driving mechanism along a second direction perpendicular to the first direction under the action of the second driving mechanism; and at least one attachment mounted on the support assembly, which can move the attachment closer to or away from the package when the support assembly moves along the second direction under the action of the second driving mechanism, and the attachment can be attached to the packaging material; The invention is characterized in that the knife assembly comprises a cutting knife and a knife seat, wherein the cutting knife is installed in the knife seat, wherein the knife seat comprises a hook portion, and the blade of the cutting knife is located at the root of the hook portion and inside the outer end of the hook portion, and After the attachment is attached to the packaging material, the attachment is moved away from the packaging along the second direction by the second driving mechanism, thereby forming a gap between the packaging material and the contents of the packaging, the hook portion of the knife holder can be inserted into the gap, and the outer end portion of the hook portion of the knife holder is located between the contents of the packaging and the blade of the cutting knife, and as the knife assembly moves along the first direction under the action of the first driving component, the cutting knife can cut the packaging material.

2. The packaging material removal device according to claim 1, characterized in that: The outer end of the hook has a convex curved shape and will abut against the contents of the package when the hook is inserted into the gap.

3. The packaging material removal device according to claim 1 or 2, characterized in that: The maximum width of the gap is D1, and the maximum width D2 of the hook portion is designed to be equal to or slightly larger than the maximum width D1 of the gap.

4. The packaging material removal device according to any one of claims 1 to 3, characterized in that: The tip of the hook has a shape that facilitates insertion into the gap.

5. The packaging material removal device according to any one of claims 1 to 4, characterized in that: The blade is arranged obliquely in the blade seat.

6. The packaging material removal device according to any one of claims 1 to 5, characterized in that: The knife assembly includes a first knife seat mounting member and a second knife seat mounting member, wherein the first knife seat mounting member and the second knife seat mounting member are pivotally connected via a pivot, the first knife seat mounting member is fixed to the first driving mechanism, and on one side of the pivot, a spring is arranged between the first knife seat mounting member and the second knife seat mounting member, and the knife seat is mounted on the second knife seat mounting member on the other side of the pivot, so that when the hook portion of the knife seat is pressed by the contents of the package, the knife seat pushes the second knife seat mounting member to compress the spring.

7. The packaging material removal device according to claim 6, characterized in that: The knife assembly also includes a threaded top screw, which is threadedly engaged in a threaded hole in the second knife seat mounting member on the other side of the pivot. By adjusting the length of the top screw extending from the threaded hole, the initial angle formed by the first knife seat mounting member and the second knife seat mounting member around the pivot under the action of the spring can be adjusted.

8. The packaging material removal device according to claim 6 or 7, characterized in that: The knife assembly also includes an adjusting block, and the knife holder is mounted on the second knife holder mounting piece through the adjusting block, and the adjusting block includes at least one first mounting hole and at least one second mounting hole, wherein the first mounting hole cooperates with at least one first long hole on the knife holder extending along the second direction, and the knife holder is detachably fixed to the adjusting block, so that the position of the knife holder can be adjusted in the second direction; the second mounting hole cooperates with at least one long hole on the second knife holder mounting piece extending along a third direction, and the third direction is perpendicular to the first and second directions, and the adjusting block is detachably fixed to the second knife holder mounting piece, so that the position of the knife holder fixed on the adjusting block can be adjusted in the third direction.

9. The packaging material removal device according to any one of claims 1 to 8, characterized in that: The knife assembly further comprises a knife box for mounting the cutting knife, wherein the knife box is mounted in the knife seat. Preferably, the knife box is in the form of a sheet and is inserted into a narrow slot of the knife seat, and the knife box is fixed to the knife seat by screws.

10. The packaging material removal device according to any one of claims 1 to 9, characterized in that: The first driving mechanism is composed of a rodless cylinder, which includes: a frame, a sliding rod fixed on the frame, and a slide table capable of sliding on the sliding rod, wherein the sliding rod extends along the first direction and the knife assembly is installed on the slide table.

11. The packaging material removal device according to any one of claims 1 to 10, characterized in that: The second driving mechanism is composed of a cylinder. Preferably, the second driving mechanism is composed of a slide cylinder, and the slide cylinder comprises: a fixed part and a sliding part, and the sliding part can slide along the second direction, wherein the bracket assembly is installed on the sliding part.

12. The packaging material removal device according to any one of claims 1 to 11, characterized in that: The bracket assembly comprises a support member, the attachment member is mounted on the support member, and preferably, the support member comprises a reinforcing rib and / or at least one through hole.

13. The packaging material removal device according to any one of claims 1 to 11, characterized in that: The bracket assembly comprises: a support member, which is mounted on the second driving mechanism and can move along the second direction under the action of the second driving mechanism; A flat plate, used for locally flattening the packaging material; at least one connecting rod, one end of the connecting rod is connected to the supporting member, the other end of the connecting rod is connected to the flat plate, and the connecting rod extends along the second direction; at least one attachment rod, the attachment being mounted on one end of the attachment rod, the attachment rod extending in the second direction; an attachment mounting plate on which the other end of the attachment rod is mounted; at least one bushing mounted on the attachment mounting plate and through which the connecting rod passes so that the attachment mounting plate can slide along the connecting rod; and a third driving mechanism, which is mounted on the attachment mounting plate and is used to drive the attachment mounting plate to move along the connecting rod in the second direction; Wherein, when the support moves toward the package along the second direction under the action of the second driving mechanism, the flat plate can abut against the packaging material, thereby locally flattening the packaging material, and the flat plate includes at least one opening, which is aligned with the attachment, so that the attachment can extend from or retract from the flat plate through the opening along the second direction.

14. The packaging material removal device according to claim 13, characterized in that: The other end of the attachment rod is mounted on the attachment mounting plate via a spring.

15. The packaging material removal device according to claim 13 or 14, characterized in that: The size and position of the flat plate are arranged so that: when the hook portion of the knife holder is inserted into the gap between the packaging material and the content, and the knife assembly moves along the first direction to cut the packaging material, the lower surface of the knife holder can abut against the upper edge of the flat plate, so that the blade of the cutting knife forms a scissors with the upper edge of the flat plate, thereby applying a shear force to the packaging material located in the hook portion.

16. The packaging material removal device according to any one of claims 13 to 15, characterized in that: The third driving mechanism is composed of a cylinder.

17. The packaging material removal device according to any one of claims 13 to 16, characterized in that: The attachment mounting plate includes at least one mounting hole in which the other end of the attachment rod is fixed.

18. The packaging material removal device according to any one of claims 1 to 17, characterized in that: The attachment means is a suction cup.

19. A method for cutting a packaged packaging material using the packaging material removal device according to any one of claims 1 to 18, characterized in that: The method comprises the following steps: placing the packaging material removal device near the package so that the first direction defined by the first drive mechanism is parallel to the direction of the cut line to be formed on the packaging material and so that the knife assembly is located outside one end of the packaging material, wherein the attachment is in a position away from the package, actuating a second drive mechanism to move the support assembly in a second direction toward the package until the attachment member contacts and attaches to the packaging material, The second driving mechanism is started again, so that the attachment together with the packaging material attached thereto moves a certain distance away from the package in the second direction, thereby forming a predetermined gap between the packaging material and the content of the package, The first driving device is started to move the knife assembly toward the package in the first direction, so that the hook portion of the knife holder is inserted into the gap. As the knife assembly continues to move in the first direction, the cutting knife of the knife assembly cuts the packaging material until a penetrating cutting line is formed on the packaging material.

20. The method according to claim 19, characterized in that In the step of moving the bracket assembly along the second direction toward the package, the flat plate abuts against the packaging material; starting the third driving mechanism causes the attachment mounting plate to move toward the package, so that the attachment extends through the opening of the flat plate along the second direction, so that the attachment contacts and attaches to the packaging material.

21. The method according to claim 20, characterized in that During the contact and attachment of the attachment to the packaging material, the spring of the attachment rod is compressed.

22. The method according to claim 20 or 21, characterized in that In the step of forming the gap, the third driving mechanism is started again, so that the attachment together with the packaging material attached thereto moves a certain distance away from the contents of the package along the second direction, thereby forming a gap between the packaging material and the contents of the package. Preferably, the attachment is retracted through the opening of the flat plate.

23. The method according to claim 22, characterized in that In the step of forming the gap, the spring of the attachment rod is restored from a compressed state.

24. The method according to any one of claims 19 to 23, characterized in that In the step of forming the cutting line, the blade forms a pair of scissors with the upper edge of the plate.

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