Automatic dismantling device for sheet material strapping

Abstract

The present invention discloses an automatic disassembly device for strapping sheet materials, comprising a bracket, a base plate and a strapping cutting and clamping mechanism; wherein the base plate is arranged horizontally for placing sheet materials, the base plate is provided with an extrusion groove and is aligned with the strapping cutting and clamping mechanism; the base plate is provided with a strapping discharge outlet on the sheet material discharge side, and the strapping of the sheet material is aligned with the strapping discharge outlet; the strapping cutting and clamping mechanism comprises a cutting pressure head and a driver which reciprocate perpendicularly to the base plate, a cutting assembly which reciprocates parallel to the base plate inside the cutting pressure head, a horizontal driver which is fixed to the cutting pressure head to drive the cutting assembly, and a strapping cutting groove which is parallel to the base plate and arranged on the cutting pressure head; the cutting assembly switches between a cutting state and a protection state.

Description

Technical Field

[0001] The invention relates to an automatic dismantling device for a sheet material strapping belt, belonging to the technical field of sheet material packaging. Background Art

[0002] Common sheet materials include banknotes, vouchers, checks, and other securities. Due to their softness and light weight, they tend to scatter when stacked. Therefore, during the production process, if stacking and moving is required, they are generally packaged and bundled before transportation. During the bundling process, one hundred sheets of sheet material are neatly aligned and stacked into a pile. Then, they are tied together with a single strapping tape, called a "hundred-bag" bundle. The strapping tape used here is called a "hundred-bag" strapping tape. The "hundred-bag" strapping tape binds the long edges of the sheet material. When manually removing the "hundred-bag" strapping tape, workers use sharp tools such as cutters or scissors. Furthermore, since sheet materials are generally thin and therefore sharp, there is a safety hazard of cuts or scratches during the removal process. Furthermore, manual removal is inefficient and can easily lead to errors in the stacking order, resulting in low production efficiency.

[0003] In Chinese patent application number 201780031528.7, a device and method for separating a strap are disclosed. The device comprises a deformation device designed to deform a bale, in particular to bend the bale, so that a portion of the strap is lifted from the bale, and a separation device designed to at least partially cut the strap in the region of the portion lifted from the bale.

[0004] Another approach has been to use laser cutting to remove bundled sheet materials. However, this laser cutting method presents temperature control issues, making it particularly susceptible to damage to sheet materials and even causing fires. Therefore, automated removal of sheet material strapping remains challenging. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic dismantling device for sheet material strapping.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] An automatic disassembly device for a sheet material strapping tape comprises a bracket, a bottom plate, and a strapping tape cutting and clamping mechanism; the bottom plate is horizontally arranged for placing sheet material, and the bottom plate is provided with an extrusion groove and is aligned with the strapping tape cutting and clamping mechanism;

[0008] The bottom plate is provided with a strapping tape discharge outlet on the sheet material discharge side, and the strapping tape of the sheet material is aligned with the strapping tape discharge outlet;

[0009] The strapping cutting and clamping mechanism includes a cutting head and a driver that reciprocates perpendicular to the base plate, a cutting assembly that reciprocates parallel to the base plate inside the cutting head, a horizontal driver fixed to the cutting head to drive the cutting assembly, and a strapping cutting groove that is parallel to the base plate and provided on the cutting head;

[0010] The cutting assembly can be switched between a cutting state and a protection state; wherein the cutting state refers to a state in which the cutting assembly moves into the strapping cutting groove, and the protection state refers to a state in which the cutting assembly is not in the strapping cutting groove.

[0011] Preferably, the cutting assembly includes a knife holder, a blade, and a strapping clamp arranged parallel to the base plate;

[0012] The blade is located at one end of the tool holder facing the strap cutting groove, the strap clamp is parallel to the tool holder, and is located below or to the side of the inner wall of the cutting head located in the strap cutting groove, for clamping the cut strap.

[0013] Preferably, the cutting assembly further comprises a chuck shaft and a shift rod rigidly connected to the strapping chuck, the shift rod and the strapping chuck are located on both sides of the chuck shaft and are rotatably connected to the tool holder via the chuck shaft.

[0014] Preferably, the cutting head further comprises an adjustable limiter, which protrudes into the guide groove. When the cutting assembly is in the cutting state, the shift rod contacts the adjustable limiter to stop the cutting assembly from moving and clamp the strapping belt.

[0015] Preferably, the distance between the front line Y of the clamping contact surface of the strapping clamp and the intersection position X of the blade of the blade and the blade holder is greater than or equal to 0.

[0016] Preferably, the cutting head includes two strips and a groove-shaped member connecting the two strips, each strip including an extrusion surface, an extension surface, a connection surface, and an inner vertical surface, and the extension surface has a slope that gradually expands from the extrusion surface to the outer surface of the groove-shaped member in a cross section perpendicular to the bottom plate.

[0017] The bottom plate has an abutting surface conforming to the outer contours of the extrusion surface and the extension surface, and is used for clamping the bundled sheet materials between the bottom plate and the cutting head and generating the same deformation as the abutting surface.

[0018] Preferably, the pressing surface is perpendicular to the vertical direction and faces the sheet material to abut against and clamp the sheet material.

[0019] Preferably, the inner facade is provided with a groove to accommodate the protruding lever and reciprocate therein parallel to the bottom plate.

[0020] Preferably, the strapping clamp is arranged on a side of the blade away from the strapping discharge port, so that the clamped strapping will not interfere with the discharge process of the sheet material.

[0021] Preferably, air nozzles are provided on both sides of the strapping tape discharge outlet to assist in discharging the cut strapping tape.

[0022] Compared with the existing technology, the automatic disassembly device for sheet material strapping provided by the present invention can adapt to the disassembly processing of hundreds of packages of sheet materials of different sizes, reliably and quickly cut off the strapping of hundreds of packages of sheet materials and discharge the cut strapping, and the processing process will not cause safety problems such as high temperature and personal injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1( a ) is a perspective view of an automatic disassembly device for a sheet material strapping belt according to an embodiment of the present invention;

[0024] FIG1( b ) is a front view of an automatic dismantling device for sheet material strapping in an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of a strapping tape cutting and clamping mechanism in an embodiment of the present invention;

[0026] Figure 3(a) and Figure 3(b) are Figure 2 ,Sketch of the outer contour of the cutting head;

[0027] Figure 4(a) and Figure 4(b) are Figure 2 ,Schematic diagram of the action process of the cutting component;

[0028] Figure 5 for Figure 2 , a schematic diagram of the cutting assembly from a bottom-up perspective;

[0029] Figure 6 This is a schematic diagram of the position relationship of the bundled strapping when it is cut. DETAILED DESCRIPTION

[0030] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] As shown in Figures 1(a) and 1(b), the first embodiment of the present invention discloses an automatic disassembly device for sheet material strapping, comprising a base plate 1, a strapping cutting and clamping mechanism 2, and a bracket (not shown). To more clearly illustrate the present invention, a bag 3 is schematically added to Figures 1(a) and 1(b). It should be noted that while the bag 3, commonly used in banks, is used as an example of bundled sheet material in this embodiment, this does not constitute a limitation of the present invention. The bracket is prior art and is not shown.

[0032] Figure 1(a) is a perspective view of the automatic unbundling device for sheet material strapping, and Figure 1(b) is a front view of the device. A horizontal base plate 1 is provided with a compression groove 11, which is aligned with the strapping cutting and clamping mechanism 2. A bag 3 is pre-placed in the groove 11 of the base plate 1 by a matching mechanism, with the strapping aligned with the strapping outlet 12 of the base plate 1.

[0033] like Figure 2 As shown in Figure 3(a), the vertically arranged strapping cutting and clamping mechanism 2 includes a cutting head 21 that can reciprocate in the vertical direction, a cutting assembly 22 that reciprocates horizontally in the guide groove of the cutting head 21, a pneumatic horizontal driver 23 fixed to the cutting head 21 and driving the cutting assembly 22 to move, a pneumatic vertical driver 24 that drives the cutting head to move, a strapping cutting groove 25 perpendicular to the first direction and the second direction, an adjustable limiter 26 arranged on the side of the strapping cutting groove 25, and a sliding guide rail 27 arranged in the vertical direction.

[0034] For ease of description, we define the reciprocating direction of the cutting head 1 as the first direction (vertical in the figure, perpendicular to the base plate); the reciprocating direction of the cutting assembly 2 as the second direction (horizontal in the figure, parallel to the base plate). The first direction is vertical, and the second direction is parallel to the horizontal plane, so the first direction and the second direction are perpendicular.

[0035] The pneumatic vertical driver 24 and the sliding guide rail 27 are fixed together on the matching support frame, so that the cutting head 21, the cutting assembly 22, and the pneumatic horizontal driver 23 can reciprocate together along the first direction.

[0036] In terms of morphological structure, the cutting head 21 arranged along the second direction includes two identical strip-shaped members 211 with a substantially trapezoidal cross section and a groove-shaped member 212 with a substantially U-shaped cross section.

[0037] In one embodiment of the present invention, the strip 211 includes an extruded surface 2111, an extended surface 2112, an inner surface 2113, and a connecting surface 2114. The extruded surfaces 2111 of the two strips 211 face the package, are perpendicular to the first direction, and extend along the second direction; the two opposite edges of the extended surface 2112 of the strip 211 connect the extruded surface 2111 and the outer surface of the channel 212 respectively; the inner surfaces 2113 of the two strips 211 are arranged opposite each other; and the connecting surface 2114 of the strip 211 is parallel to the extruded surface 2111, extends outward from the inner surface 2113, and connects to the top of the channel 212.

[0038] The inner facades 2113 of the two strip-shaped members 211 and the channel-shaped member 212 enclose a guide groove 213 for limiting the movement of the cutting assembly 22 in parallel with the second direction.

[0039] In a direction perpendicular to the first and second directions, the cross-sectional dimension D1 of the extrusion surface 2111 is smaller than the cross-sectional dimension D2 of the connection surface 2114. Therefore, the cutting head 21 has a wedge-shaped cross-sectional profile, with the extrusion end surface near the package forming the tip of the wedge. Furthermore, the extension surface 2112 is not limited to a flat surface and can have various suitable surface shapes, such as a stepped surface or a curved surface.

[0040] A through-cutting slot 25 is provided on the side of the strip 211 proximal to the bag, perpendicular to the first and second directions. A distance D3 between the bottom surface of the cutting slot 25 and the extrusion surface 2111 in the first direction is less than a distance D4 between the connecting surface 2114 and the extrusion surface 2111 in the first direction. The dimension of the cutting slot 25 in the second direction is set to be larger than the dimensions of the bag strapping to ensure that the strapping can fit into the cutting slot 25.

[0041] The narrow side length of the package is greater than the cross-sectional profile length of the extrusion surface 2111 and the extension surface 2112 of the two strip-shaped pieces 211 of the cutting head 21.

[0042] The extrusion surfaces 2111 and 2112 of the cutting head 21 have a surface shape that matches the extrusion groove 11, and the two are aligned in position; driven by the pneumatic vertical drive 24, the cutting head 21 approaches the extrusion groove 11, and the extrusion of the two causes the bundle to deform along their outer surfaces, causing the strapping of the bundle to be embedded in the strapping cutting groove 25 and fit with the bottom surface of the strapping cutting groove 25, so that the cutting assembly 22 cuts the strapping under the drive of the pneumatic horizontal drive 23.

[0043] The cutting head 21 further includes an adjustable stopper 26 , which protrudes into the guide groove 213 .

[0044] The cutting assembly 22 can be switched between a cutting state and a protection state. The cutting state refers to the state in which the cutting assembly 22 moves into the strapping cutting groove 25 (e.g. Figure 2 The protective state refers to when the cutting assembly 22 is not within the strap cutting groove 25. When in the protective state, the cutting assembly 22 retracts into the guide groove 213 within the cutting head 21. The transition from the protective state to the cutting state occurs when the cutting assembly 22 gradually moves from the guide groove 213 into the strap cutting groove 25. During this transition, the moving blade 222 gradually cuts the stationary strap, as will be explained in detail below.

[0045] As shown in Figure 4(a), Figure 4(b), Figure 5 、 Figure 6 As shown, the cutting assembly 22 includes a horizontally arranged blade holder 221, a vertically arranged blade 222, a strapping clamp 223, a clamp rotating shaft 224 perpendicular to the first direction and the second direction, and a shifting rod 225 coaxially fixed with the strapping clamp.

[0046] The blade 222 is located at the end of the blade holder 221 facing the strap cutting slot 25. The surface of the blade 222 is parallel to the first and second directions and is used to cut the strap inserted into the strap cutting slot 25. The cutting blade 222 can have various shapes, such as a single straight blade or a rotating blade, as long as it is suitable for cutting straps. The blade 222 is located at the end of the blade holder 221 facing the strap cutting slot.

[0047] The strap clamp 223 is rigidly connected to the lever 225 and can rotate together in a vertical plane about the clamp axis 224. The strap clamp is parallel to the tool holder 221 and is located below or to the side of the inner wall 251 of the strap cutting groove 25 of the cutting head 21 to clamp the severed strap.

[0048] When the lever 225 is not blocked by the adjustable stopper 26, the strap clamp 223 rotates clockwise (opposite the direction of the arrow in FIG4(a) ) in response to gravity, disengaging the strap clamp 223 from the tool holder 221. However, due to the restraint of the lever 225, the maximum opening angle between the two is maintained. The lever 225 and the strap clamp 223 are located on either side of the clamp shaft 224 and are rotatably connected to the tool holder 221 via the clamp shaft 224.

[0049] When pushed by the pneumatic horizontal driver 23 , the cutting assembly 22 moves along the second direction in the guide groove 213 inside the cutting head 21 .

[0050] Driven by the pneumatic vertical drive 24, the cutting head 21 is restricted by the sliding guide rail 27 set along the first direction, and can only squeeze the bag 3 toward the groove 11 of the base plate 1 along the first direction, causing the bag 3 to deform inward along the center line of the narrow side.

[0051] In the second direction, the front line Y of the clamping contact surface of the strapping clamp 223 is adjacent to the intersection position X of the blade 222 and the blade holder 221 (i.e., the position where the blade cuts the strapping). When the cutting assembly 22 cuts the strapping, the intersection position X is the latest cutting position. The strapping clamp 223 that follows it can ensure that the cut portion of the strapping is always between its clamping contact surface and the lower surface of the blade holder 221 during the strapping cutting process. Figure 5 As shown in the schematic diagram, the distance d between the intersection point X and the front line Y of the clamping contact surface should be greater than or equal to 0 to ensure that the strapping clamp 223 has clamped the strapping when it is cut. The adjustable limiter 26 can be adjusted within a small range in the second direction to ensure that the strapping is not clamped prematurely, resulting in the blade being unable to continue cutting (because the blade 222 and the strapping clamp 223 are relatively fixed in the second direction); it can also prevent the strapping from being cut prematurely and then escaping from the strapping cutting groove 25, resulting in it not being clamped by the strapping clamp 223 in time.

[0052] The cutting head 21 presses the bag 3 in a first direction toward the groove 11 of the base plate 1, causing the bag 3 to deform inward along the centerline of its narrow side. The strap A on the concave surface of the bag 3 breaks away from the sheet material on the upper surface and is embedded in the strap cutting groove 25, where it is supported vertically downward by the blade holder 221. Consequently, the strap A contacts the lower surface of the blade holder 221. Therefore, the strap clamp 223 and the vertically mounted blade 222 on the lower surface of the blade holder 221 can accurately clamp or cut the strap A.

[0053] When cutting the strap embedded in the strap cutting slot 25, the pneumatic horizontal actuator 23 drives the cutting assembly 22 to move along the second direction toward the strap cutting slot 25. The adjustable stopper 26, positioned along the second direction within the strap cutting slot 25, abuts the lever 225, causing the strap clamp 223 to rotate toward the tool holder 221, thereby beginning to clamp the strap. When the adjustable stopper 26 stops the cutting assembly 22, the strap has been completely severed, and the strap clamp 223 has firmly clamped one end of the severed strap. The pneumatic vertical actuator 24 then drives the cutting head 21 upward, lifting the severed end of the strap along with the cutting head 21, and the other end of the strap then falls into the strap discharge port 12.

[0054] Furthermore, one end of the cut strap A is released toward the strap discharge port 12 , and the other end is clamped by the cutting head 21 .

[0055] After the sheet material to be dispersed is removed by the supporting mechanism, the pneumatic horizontal actuator 23 drives the cutting assembly 22 back to its original position. Under the action of its own gravity, the strapping clamp 223 rotates away from the blade holder 221, thereby releasing the severed strap. Finally, under the action of external force, the strapping falls out of the strapping discharge port 12 and is discharged.

[0056] Preferably, air nozzles with adjustable directions are provided on both sides of the strapping outlet 12, and the air flows ejected by the air nozzles are directed substantially vertically downwards, so that the severed strapping can be accurately and completely discharged downwards from the strapping outlet 12 under the drive of the air flows ejected by the air nozzles.

[0057] As a second embodiment of the present invention, a cutting head 21 as shown in FIG3( b ) is provided. Specifically, the cutting head 21 provided along the second direction includes two identical strips 211A and 211B with approximately trapezoidal cross sections, and a channel 212 with approximately U-shaped cross sections.

[0058] The strips 211A and 211B include an extruded surface 2111, an extended surface 2112, an inner surface 2113, and a connecting surface 2114. The extruded surfaces 2111 of the two strips 211A and 211B face the front of the package, are perpendicular to the first direction, and extend along the second direction. The two opposing edges of the extended surfaces 2112 of the strips 211A and 211B respectively connect the extruded surface 2111 and the outer surface of the channel member 212. The inner surfaces 2113 of the two strips 211A and 211B are disposed opposite each other, differing in that a groove S parallel to the second direction is disposed on the inner surface 2113 of 211B near the channel member 212. The connecting surface 2114 of the strips 211A and 211B is parallel to the extruded surface 2111, extends outward from the inner surface 2113, and connects to the top of the channel member 212.

[0059] The inner facades 2113 of the two strip-shaped members 211A and 211B, the slot body S, and the slot-shaped member 212 form a guide groove 213 that limits the movement of the cutting assembly 22 in parallel to the second direction.

[0060] In a direction perpendicular to the first and second directions, the cross-sectional dimension D1 of the extrusion surface 2111 is smaller than the cross-sectional dimension D2 of the connection surface 2114. Therefore, the cutting head 21 has a wedge-shaped cross-sectional profile, with the extrusion end surface near the package forming the tip of the wedge. Furthermore, the extension surface 2112 is not limited to a flat surface and can have various suitable surface shapes, such as a stepped surface or a curved surface.

[0061] A through-cutting slot 25 is provided on the side of the strip 211 proximal to the bag, perpendicular to the first and second directions. A distance D3 between the bottom surface of the cutting slot 25 and the extrusion surface 2111 in the first direction is less than a distance D4 between the connecting surface 2114 and the extrusion surface 2111 in the first direction. The dimension of the cutting slot 25 in the second direction is set to be larger than the dimensions of the bag strapping to ensure that the strapping can fit into the cutting slot 25.

[0062] The narrow side length of the package is greater than the cross-sectional profile length of the extrusion surface 2111 and the extension surface 2112 of the two strip-shaped pieces 211 of the cutting head 21.

[0063] The slot body S accommodates the reciprocating motion of the lever 225 extending from the surface of the cutting assembly 22 in the second direction. The lever 225 and the adjustable stopper 26 in the first embodiment are adjusted accordingly to adapt to the guide groove 213 of different shapes.

[0064] Compared to existing technologies, the sheet material strapping device provided by the present invention can automatically remove sheet material strapping, improving efficiency while ensuring that the sheet material is not damaged. Furthermore, the sheet material strapping device provided by the present invention can be used to remove strapping of various specifications and at various locations, thus having a wide range of applications, including in various industries such as banknote printing, ticket printing, and packaging.

[0065] The above describes in detail the automatic disassembly device for sheet material strapping provided by the present invention. For those skilled in the art, any obvious modification made thereto without departing from the essence of the present invention will constitute an infringement of the patent rights of the present invention and the corresponding legal liability will be borne.

Claims

1. An automatic dismantling device for sheet material strapping, characterized in that It includes a bracket, a bottom plate and a strapping cutting and clamping mechanism; wherein, The bottom plate is arranged horizontally for placing sheet materials, and the bottom plate is provided with an extrusion groove and is aligned with the strapping cutting and clamping mechanism; The bottom plate is provided with a strapping tape discharge outlet on the sheet material discharge side, and the strapping tape of the sheet material is aligned with the strapping tape discharge outlet; The strapping cutting and clamping mechanism includes a cutting head and a driver that reciprocates perpendicular to the base plate, a cutting assembly that reciprocates parallel to the base plate inside the cutting head, a horizontal driver fixed to the cutting head to drive the cutting assembly, and a strapping cutting groove that is parallel to the base plate and provided on the cutting head; The cutting assembly switches between a cutting state and a protection state; wherein the cutting state refers to a state in which the cutting assembly moves into the strapping cutting groove, and the protection state refers to a state in which the cutting assembly is not in the strapping cutting groove; The cutting head includes two strips and a channel-shaped member connecting the two strips. Each strip includes an extrusion surface, an extension surface, a connection surface, and an inner vertical surface. The outer vertical surface has a slope that gradually expands from the extrusion surface to the outer surface of the channel-shaped member in a cross section perpendicular to the bottom plate. The inner vertical surface and the channel-shaped member enclose a guide groove that limits the movement of the cutting assembly. The bottom plate has an abutting surface conforming to the outer contours of the extrusion surface and the extension surface, and is used for clamping the bundled sheet materials between the bottom plate and the cutting head and generating the same deformation as the abutting surface.

2. The automatic dismantling device for sheet material strapping according to claim 1, characterized in that: The cutting assembly includes a knife holder, a blade, and a strapping clamp arranged parallel to the base plate; The blade is located at one end of the blade holder facing the strapping cutting groove; The strapping clamp is parallel to the tool holder and is located below or to the side of the inner wall of the cutting head located in the strapping cutting groove, and is used for clamping the cut strapping.

3. The automatic dismantling device for sheet material strapping according to claim 2, characterized in that: The cutting assembly also includes a chuck shaft and a shift rod rigidly connected to the strapping chuck; The shifting rod and the strapping clamp are located on both sides of the clamp rotating shaft and are rotatably connected to the tool holder via the clamp rotating shaft.

4. The automatic dismantling device for sheet material strapping according to claim 3, characterized in that: The cutting head further includes an adjustable limiter, wherein the adjustable limiter protrudes into the guide groove; When the cutting assembly is in the cutting state, the shifting rod contacts the adjustable limiting member, so that the cutting assembly stops moving and clamps the strapping belt.

5. The automatic dismantling device for sheet material strapping according to claim 3, characterized in that: The distance between the front line (Y) of the clamping contact surface of the strapping clamp and the intersection position (X) of the blade of the blade and the blade holder is greater than or equal to 0.

6. The automatic dismantling device for sheet material strapping according to claim 3, characterized in that: The pressing surface is perpendicular to the vertical direction and faces the sheet material to abut against and clamp the sheet material.

7. The automatic dismantling device for sheet material strapping according to claim 6, characterized in that: The inner facade is provided with a slot body to accommodate a protruding shift rod and allow the shift rod to reciprocate in the slot body parallel to the bottom plate.

8. The automatic dismantling device for sheet material strapping according to claim 2, characterized in that: The strap clamp is arranged on a side of the blade away from the strap discharge port, so that the clamped strap does not interfere with the discharge process of the sheet material.

9. The automatic dismantling device for sheet material strapping according to claim 1, characterized in that: Air nozzles are provided on both sides of the strapping tape discharge port to assist in the discharge of the strapping tape.

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