A bale shaper

Abstract

The present application relates to the technical field of stacking, and provides a stacking shaper, which solves the technical problem that the existing stacking machine's supporting claw can damage the packaging bag and the tray. The stacking shaper comprises a fixed frame, a lifting mechanism, a shaping mechanism and a tray conveying mechanism, and is characterized in that: the stacking shaper further comprises a tray positioning mechanism and an edge lifting mechanism; the tray positioning mechanism is used for abutting against the front and rear ends of the tray; a pair of openings are formed on the left and right sides of the tray and are communicated with the insertion groove; the edge lifting mechanism is provided with four and corresponds to each opening one by one; a pair of lifting assemblies of the edge lifting mechanism lift the edge of the material bag upward under the action of a lifting driving unit; the lifting assembly comprises a fixed supporting column, a sliding supporting block and an elastic piece; the sliding supporting block is slidingly installed on the upper part of the fixed supporting column and is matched with the fixed supporting column through a slope; and the elastic piece is used for resetting the sliding supporting block; and a supporting claw capable of stretching and retracting is installed below the side shaping mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacking, in particular to a stacking and shaping machine. BACKGROUND

[0002] In order to improve safety, the existing stacking machine is provided with a supporting claw at the lower end of the clamping plate of the clamping mechanism to prevent the bagged materials from falling off during the stacking process. The supporting claw is generally made of hard material, and in the process of inserting under the packaging bag, the packaging bag or the tray may be damaged.

[0003] Therefore, we propose a stacking and shaping machine. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the shortcomings of the prior art, the present application provides a stacking and shaping machine, which overcomes the shortcomings of the prior art, has reasonable design, good reliability, and solves the technical problem that the supporting claw of the existing stacking machine may damage the packaging bag or the tray.

[0006] (II) Technical solutions

[0007] To achieve the above purpose, the present application is realized by the following technical solutions:

[0008] A stacking and shaping machine, comprising a fixed frame, a lifting mechanism, a shaping mechanism, and a tray conveying mechanism, wherein the lifting support of the lifting mechanism is slidingly installed on the fixed frame and driven to make lifting movement by a lifting drive unit, four side shaping mechanisms of the shaping mechanism are installed around the lifting support, and the tray conveying mechanism is a roller conveying mechanism, characterized in that:

[0009] The stacking and shaping machine further comprises a tray positioning mechanism and an edge lifting mechanism.

[0010] The tray positioning mechanism comprises a positioning column assembly and a pressing block assembly, the positioning column assembly comprises a positioning column and a lifting positioning drive unit, the positioning column makes lifting movement under the action of the lifting positioning drive unit and can pass through the conveying rollers of the tray conveying mechanism to abut against the front end of the tray, and the pressing block assembly comprises a pressing block and a rotating positioning drive unit, the pressing block swings under the action of the rotating positioning drive unit and can swing from outside to inside to abut against the rear end of the tray above the conveying rollers of the tray conveying mechanism.

[0011] A pair of openings are formed on the left and right sides of the tray.

[0012] The edge lifting mechanism is provided with four and corresponds to each of the openings, the edge lifting mechanism includes a pair of lifting assemblies and a lifting driving unit, a pair of the lifting assemblies are driven by the lifting driving unit to make lifting movement to pass through the conveying rollers of the tray conveying mechanism upward and lift the bag edge, the lifting assembly includes a fixed support column, a sliding support block and an elastic member, the sliding support block is slidingly installed on the upper portion of the fixed support column and cooperates with the fixed support column through an inclined surface, and the elastic member is installed on the upper portion of the fixed support column and is used for resetting the sliding support block.

[0013] A pair of side shaping mechanisms located on both sides of the tray conveying mechanism in the width direction, a pair of clamping claws capable of being extended and retracted are installed below the shaping member of the side shaping mechanism, the upper portions of the clamping claws are cooperated with the two sliding support blocks of the edge lifting mechanism through inclined surfaces, and when the clamping claws are lifted, the two sliding support blocks of the edge lifting mechanism can be driven to slide synchronously to the upper side and be separated upward from between the two sliding support blocks.

[0014] Further, the conveying roller opposite to the opening of the tray in the positioning state is of a segmented structure, a roller seat is installed between adjacent two end roller bodies, and the end portion of the roller body is rotationally supported on the roller seat, and the roller seat forms a space for the lifting assembly to make translational and lifting movement.

[0015] Further, one side of the lower portion of the sliding support block is provided with a driving cooperation inclined surface, the other side is provided with a guide cooperation inclined surface, the sliding support block extends outward to form a guide flange on both sides in the length direction of the guide cooperation inclined surface, the upper portion of the clamping claw is provided with a driving inclined surface on both sides, the upper portion of the fixed support column is provided with a guide inclined surface, the fixed support column is provided with an inverted L-shaped pressing plate on both sides in the length direction of the guide inclined surface, the guide flange extends into a sliding groove formed by the L-shaped pressing plate and the guide inclined surface, and the elastic member is embedded in the upper portion of the fixed support column and elastically abuts against the sliding support block.

[0016] Further, the lower portion of the shaping member is installed with a lifting and telescopic driving unit, and the output end of the lifting and telescopic driving unit is connected with the clamping claw.

[0017] Further, the lifting and positioning driving unit includes a lifting and positioning cylinder, and the output end of the lifting and positioning cylinder is connected with a positioning column and drives the positioning column to extend upward from the gap between adjacent two conveying rollers.

[0018] Further, the rotating positioning driving unit includes a rotating cylinder, the rotating cylinder is installed on the side portion of the frame of the tray conveying mechanism, and the output end of the rotating cylinder is connected with the pressing block through a swing arm.

[0019] Further, the shaping mechanism includes an upper shaping mechanism, and the upper shaping mechanism is installed on the upper portion of the lifting support.

[0020] Further, the shaping members of the side shaping mechanism and the upper shaping mechanism are in frame structure;

[0021] The upper and lower ends of the shaping member of the side shaping mechanism are respectively provided with guide frames, and the lifting support is provided with guide supports on both sides of each guide frame, and the guide frame and the guide support are guided and matched through the sliding block and the guide rail;

[0022] The shaping member of the upper shaping mechanism is guided and installed on the heightening frame through the guide column, and the heightening frame is installed on the lifting support.

[0023] Further, the fixing rack comprises four vertical columns and cross beams connecting the four vertical columns two by two, each vertical column is respectively provided with a chain, and each chain is synchronously lifted through the action of the motor, the synchronous roller and the chain wheel.

[0024] Further, the opening vertically penetrates the tray supporting strip, and the width of the opening is less than the width of the tray supporting strip.

[0025] Alternatively, the depth of the opening is less than the height of the tray supporting strip, and the opening is in communication with the insertion slot for the forklift.

[0026] (Three) beneficial effects

[0027] The present application provides a kind of to pack shaping machine, with following beneficial effects:

[0028] 1, before the insertion of the claw, the edge lifting mechanism is lifted upwards along the opening, the edge part of the bagged material, including the part falling outside the tray, is lifted, the package bag is not pulled when the claw is inserted, in addition, also avoid using the claw to hold the bagged material falling part against the tray side wall, avoid scratching the tray, can improve the safety and reliability of equipment;

[0029] 2, the state of bagged material placed to tray is deviated, the bag body of package bag or some connecting members of bag body bottom falls into opening in the present application after the opening of tray edge, the bag body or connecting member will be stuck with the side wall of opening during the lifting of bagged material, leading to the tray and bagged material rising, even there is the risk of tray falling, there is a potential safety hazard;And in the present application, the part of package bag falling into opening is lifted upwards from the lower part of opening by the setting of lifting assembly, then, the lifting process after the insertion of claw can separate the two sliding support blocks to the oblique upper side of two sides, and keep the lifting of lifting assembly, good reliability;

[0030] 3, after the two sliding support blocks of lifting assembly separate to the oblique upper side of two sides, the edge part of sliding support block can be designed to fall outside the opening, can form vertical limiting to tray, avoid the lifting of tray and bagged material together.

[0031] 4. During the process of lifting the edge of the bagged material, the entire bagged material still rests on the pallet, which will not affect the stability of the bagged material and can ensure the safety and reliability of the equipment. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the side shaping mechanism, pallet conveying mechanism and pallet positioning mechanism in Embodiment 1 of the present invention.

[0034] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle;

[0035] Figure 4 for Figure 2 A magnified structural diagram of section B in the middle;

[0036] Figure 5 This is a schematic diagram of the cooperation between the pallet conveying mechanism and the pallet positioning mechanism in Embodiment 1 of the present invention;

[0037] Figure 6 for Figure 5 A magnified structural diagram of section C in the middle;

[0038] Figure 7 This is a schematic diagram of the structure of the pallet conveying mechanism, pallet positioning mechanism and claw assembly in Embodiment 1 of the present invention.

[0039] Figure 8 This is a structural schematic diagram of the pallet conveying mechanism, pallet positioning mechanism, and pallet cooperation in Embodiment 1 of the present invention;

[0040] Figure 9 for Figure 8 A magnified structural diagram of section D in the middle;

[0041] Figure 10 This is a schematic diagram of the tray structure in Example 1;

[0042] Figure 11 This is a cross-sectional schematic diagram of the cooperation between the claw and the lifting component in Embodiment 1 of the present invention;

[0043] Figure 12 This is a schematic diagram of the tray structure in Embodiment 2 of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of the pallet conveying mechanism, the lifting assembly, and the claw assembly in Embodiment 2 of the present invention.

[0045] Figure 14 Fig. 2 is a structural schematic diagram of the edge lifting mechanism in the embodiment 2 of the present application.

[0046] Fig. 2 is a structural schematic diagram of the edge lifting mechanism in the embodiment 2 of the present application.

[0047] 1, fixed frame;

[0048] 11, stand column;

[0049] 12, cross beam;

[0050] 2, shaping mechanism;

[0051] 21, side shaping mechanism;

[0052] 211, shaping piece;

[0053] 212, guide frame;

[0054] 22, upper shaping mechanism;

[0055] 3, tray conveying mechanism;

[0056] 31, conveying roller;

[0057] 311, roller body;

[0058] 41, lifting side frame;

[0059] 42, guide seat;

[0060] 43, slider rail assembly;

[0061] 5, tray;

[0062] 51, slot;

[0063] 52, opening;

[0064] 53, support strip;

[0065] D, width of opening

[0066] M, communication;

[0067] 6, tray positioning mechanism;

[0068] 61, positioning column assembly;

[0069] 611, positioning column;

[0070] 612, synchronization plate;

[0071] 613, guide column guide sleeve;

[0072] 62, pressing block assembly;

[0073] 621, pressing block;

[0074] 622, swing arm;

[0075] 623, rotating cylinder;

[0076] 7, edge lifting mechanism;

[0077] 71, lifting assembly;

[0078] 711, fixed support column;

[0079] 7111, embedded groove;

[0080] 7112, upper limit strip;

[0081] 7113, lower limit strip;

[0082] 712, sliding support block;

[0083] 7121, driving matching slope;

[0084] 7122, guiding matching slope;

[0085] 7123, abutting part;

[0086] 713, elastic member;

[0087] 72, lifting driving unit;

[0088] 8, claw assembly;

[0089] 81, claw;

[0090] 811, driving slope;

[0091] 82, lifting telescopic driving unit;

[0092] 9, roller seat;

[0093] 91, rectangular frame;

[0094] 92, support column. DETAILED DESCRIPTION

[0095] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0096] Embodiment 1

[0097] Referring to the drawings Figures 1-11The present application relates to a kind of packing shaping machine, including fixed frame 1, lifting mechanism, shaping mechanism, tray conveying mechanism 3, the lifting bracket of the lifting mechanism is slidably installed in fixed frame 1 and is driven to do lifting motion (lifting bracket is mainly formed by four lifting side frame, the space in the center is used to accommodate bagged material, lifting drive unit can adopt chain lifting unit, it is prior art, not shown in figure completely) by lifting drive unit, the shaping mechanism includes side shaping mechanism 21 and upper shaping mechanism 22, four side shaping mechanism 21 is installed in the four around of lifting bracket, the upper shaping mechanism 22 is installed in the upper of lifting bracket, the tray conveying mechanism 3 is roller conveying mechanism.

[0098] The packing shaping machine further includes tray positioning mechanism 6 and edge lifting mechanism 7;

[0099] The tray positioning mechanism 6 includes positioning column assembly 61 and pressing block assembly 62, the positioning column assembly 61 includes positioning column and lifting positioning drive unit (can adopt cylinder), the positioning column does lifting motion under the action of lifting positioning drive unit and can pass through the conveying roller 31 of tray conveying mechanism 3 upwards to resist the front end of tray;The pressing block assembly 62 includes pressing block and rotary positioning drive unit (can adopt rotary cylinder), the pressing block swings under the action of rotary positioning drive unit and can swing from outside to inside to the above of conveying roller 31 of tray conveying mechanism 3 to resist the rear end of tray;

[0100] A pair of openings 52 are formed on the left and right sides of tray 5, opening 52 is vertically downwardly through the support bar 53 on the left and right sides of the lower part of tray, the width D of opening is less than the width of support bar 53 on the left and right sides of the lower part of tray, preferably, the width D of opening is less than half of the width of support bar 53 on the left and right sides of the lower part of tray, while increasing the opening, the reduction of support bar strength should be reduced as far as possible, on the one hand, on the basis of meeting the cooperation of tray and forklift steel fork, increase the width of support bar, on the other hand, the opening on both sides can also be set in staggered along the front and rear direction of tray;

[0101] The edge lifting mechanism 7 is provided with four and corresponds to each of the openings 52, the edge lifting mechanism 7 includes a lifting assembly 71 and a lifting drive unit 72 (an electric push rod can be used), a pair of the lifting assembly 71 is driven by the lifting drive unit 72 to make lifting movement to pass through the conveying roller 31 of the tray conveying mechanism 3 and lift the bag edge, the lifting assembly includes a fixed support column 711, a sliding support block 712 and an elastic member 713, the sliding support block 712 is slidingly installed on the upper part of the fixed support column 711 and cooperates with the fixed support column 711 through a slope, the elastic member 713 is installed on the upper part of the fixed support column 711 and is used for resetting the sliding support block 712, specifically, the lower part of the sliding support block 712 is provided with a driving cooperation slope 7121 on one side and a guide cooperation slope 7122 on the other side, the sliding support block 712 extends outward to form a guide flange on both sides of the length direction of the guide cooperation slope 7122, the upper part of the claw 81 is provided with a driving slope 811 on both sides, the upper part of the fixed support column 711 is provided with a guide slope, the fixed support column 711 is provided with an inverted L-shaped pressing plate on both sides of the length direction of the guide slope, the guide flange extends into the sliding groove formed by the L-shaped pressing plate and the guide slope, and the elastic member 713 is embedded in the upper part of the fixed support column 711 and elastically abuts against the sliding support block 712;

[0102] A pair of side shaping mechanisms 21 located on both sides of the width direction of the tray conveying mechanism 3, a pair of claws are installed below the shaping member 211 and can be telescopic (extend or retract in a translational manner), specifically, a lifting telescopic drive unit 82 (a combination of an electric push rod and a cylinder can be used, the cylinder is installed on the output end of the electric push rod, the claw is installed on the output end of the cylinder, the electric push rod drives the cylinder and the claw to make lifting movement, and the cylinder drives the claw to extend or retract) is installed on the lower part of the shaping member 211, the claw 81 and the lifting telescopic drive unit 82 constitute a claw assembly 8, the output end of the lifting telescopic drive unit 82 is connected with the claw, the upper part of the claw 81 can cooperate with the two sliding support blocks 712 of the edge lifting mechanism 7 through a slope, and when the claw is lifted, the two sliding support blocks 712 of the edge lifting mechanism 7 can be simultaneously slid upward and upward and be separated from the two sliding support blocks 712.

[0103] The bag stacking and shaping machine can realize bag stacking and shaping operations. When the bag stacking operation is performed, after the previous bagged material is transferred, the bagged material is first clamped by the side shaping mechanism, then lifted by the lifting mechanism, and the tray is conveyed out. After the next bagged material is transferred, the lifting mechanism is lowered, the side shaping mechanism is released, and the previous bagged material is stacked on the next bagged material. When the shaping operation is performed, the four side shaping mechanisms simultaneously shape inward, and one upper shaping mechanism is pressed downward to shape, thereby realizing the synchronous shaping of the two stacked bagged materials. The shaping plays a dual role of aligning and compacting.

[0104] Specifically, during the stacking operation, after the previous bagged material is transported, the tray conveying mechanism stops working. First, the front end of the tray at the bottom is abutted against the positioning column, and the rear end is compacted by the pressing block, so as to realize the positioning of the front and rear positions of the tray. At the same time, a positioning mechanism can also be arranged on the left and right sides of the tray to realize the positioning of the left and right positions of the tray, or the pressing block assembly can press and fix the tray on the frame of the tray conveying machine along the left and right directions. Second, after the tray is positioned, the four edge lifting mechanisms are lifted synchronously, and the edge part of the bagged material at the insertion position of the tray claw is lifted upward by the lifting assembly. At this time, the upper end surface of the sliding support block of the lifting assembly is flush with the upper end surface of the tray. Third, the tray claw is extended and inserted between the two fixed support columns of the lifting assembly. Then, the lifting mechanism drives the side shaping mechanism and the clamped bagged material to rise synchronously. During this period, the tray claw and the two sliding support blocks of the same lifting assembly are matched through the inclined surface, which drives the two sliding support blocks to move upward along the inclined surface and separate from each other. On the one hand, the tray claw can be pulled out, and on the other hand, the sliding support block can drive the lifted part to move obliquely upward, that is, to the outside of the opening, so that the lifted part is completely pulled out. Finally, the sliding support block is reset under the action of the elastic member, the lifting assembly is retracted to the lower side of the roller seat under the action of the lifting driving unit, and the tray conveying mechanism is started and the tray is moved out.

[0105] The lifting mechanism drives the side shaping mechanism to descend, so that the lower part of the shaping member is basically flush with the tray. At the same time,

[0106] In this embodiment, the conveying roller 31 opposite to the opening 52 of the tray in the positioning state is of a segmented structure, and a roller seat 9 is installed between the two adjacent end roller bodies 311. The roller seat 9 mainly comprises a rectangular frame 91 and a support column 92 fixed to the periphery of the rectangular frame 91. The end of the roller body 311 is rotatably supported on the roller seat 9. The rectangular frame 91 of the roller seat 9 forms a space for the lifting assembly 71 to move up and down, so as to avoid movement interference.

[0107] In this embodiment, the lifting positioning driving unit comprises a lifting positioning cylinder. The upper part of the cylinder body of the lifting positioning cylinder is connected with a connecting plate. A synchronous plate 612 is connected above the connecting plate through a pair of guide columns 613. A plurality of positioning columns 611 are distributed on the synchronous plate 612. The output end of the lifting positioning cylinder penetrates through the connecting plate and is connected with the synchronous plate 612 to drive the positioning column to protrude upward from the gap between the adjacent two conveying rollers 31.

[0108] In this embodiment, the rotary positioning driving unit comprises a rotary cylinder 623. The rotary cylinder 623 is installed on the side of the frame of the tray conveying mechanism 3. The output end of the rotary cylinder 623 is connected with the pressing block 621 through the swing arm 622.

[0109] In this embodiment, the shaping member 211 of the side shaping mechanism 21 and the upper shaping mechanism 22 is in a frame structure;

[0110] The upper and lower ends of the shaping member 211 of the side shaping mechanism 21 are respectively provided with a guide frame 212, and the lifting support is provided with a guide support 42 on both sides of each guide frame 212, and the guide frame 212 and the guide support are guided and matched through a sliding block guide rail assembly 43.

[0111] The shaping member 211 of the upper shaping mechanism 22 is guided and installed on the cushioning frame through a guide column, and the cushioning frame is installed on the lifting support.

[0112] The shaping member 211 in a frame structure can improve the strength, and the upper and lower ends of the shaping member 211 are connected with the guide frame 212 in a frame structure, further improving the structural strength.

[0113] In this embodiment, the fixed rack 1 includes four columns 11 and beams 12 connecting the columns 11 two by two, and each column 11 is provided with a chain, and each chain synchronously lifts the lifting support through the action of a motor, a synchronous roller and a chain wheel. This structure is prior art and is not shown in the figure.

[0114] In this embodiment, a guide inclined surface on the top of the fixed support column is provided with an embedded groove 7111, the bottom of the sliding support block 712 is formed with a resisting part 7123 extending into the embedded groove 7111, the elastic member 713 is a spring, preferably a nitrogen spring, and the output end thereof abuts against the resisting part 7123.

[0115] Embodiment 2

[0116] The difference between embodiment 2 and embodiment 1 is that, referring to the accompanying drawings, Figures 12-14 The opening 52 communicates with the insertion slot 51 for the forklift to insert, and M in the figure is the communication position of the opening 52 and the insertion slot 51. The lifting driving unit needs to not only drive the lifting assembly to move up and down, but also needs to move horizontally to pass through the communication position M and enter the opening 52. The depth of the opening 52 is less than the height of the tray support bar, which can avoid the tray support bar from being disconnected into two sections and affect the stability of the tray conveying. Correspondingly, the position of the roller seat also needs to be adjusted adaptively.

[0117] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0118] The above examples are merely used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A bale shaping machine, comprising a fixed frame, a lifting mechanism, a shaping mechanism, a tray conveying mechanism, the lifting support of the lifting mechanism being slidingly mounted on the fixed frame and driven to make lifting movement by a lifting driving unit, four side shaping mechanisms of the shaping mechanism being mounted around the lifting support, the tray conveying mechanism being a roller conveying mechanism, characterized in that: the bale shaping machine further comprises a tray positioning mechanism and an edge lifting mechanism; the tray positioning mechanism comprises a positioning column assembly and a pressing block assembly, the positioning column assembly comprising a positioning column and a lifting positioning driving unit, the positioning column being driven by the lifting positioning driving unit to make lifting movement and being able to pass through the conveying rollers of the tray conveying mechanism upward to abut against the front end of the tray; the pressing block assembly comprising a pressing block and a rotating positioning driving unit, the pressing block being driven by the rotating positioning driving unit to swing and being able to swing from outside to inside above the conveying rollers of the tray conveying mechanism to abut against the rear end of the tray; a pair of openings are formed on the left and right sides of the tray respectively; the edge lifting mechanism is provided with four and corresponds to each of the openings one by one, the edge lifting mechanism comprising a pair of lifting assemblies and a lifting driving unit, the pair of lifting assemblies being driven by the lifting driving unit to make lifting movement to pass through the conveying rollers of the tray conveying mechanism upward and lift the edge of the bale, the lifting assembly comprising a fixed support column, a sliding support block and an elastic member, the sliding support block being slidingly mounted on the upper part of the fixed support column and being matched with the fixed support column through a slope, the elastic member being mounted on the upper part of the fixed support column and being used for the reset of the sliding support block; a pair of side shaping mechanisms located on both sides of the width direction of the tray conveying mechanism, the lower part of the shaping member of the side shaping mechanism being mounted with a pair of retractable claws, the upper part of the claw being matched with the two sliding support blocks of the edge lifting mechanism through a slope, the claw being lifted to drive the two sliding support blocks of the edge lifting mechanism to slide synchronously to the obliquely upward and be taken out upward from between the two sliding support blocks. The conveying roller opposite to the opening of the tray in the positioning state is of a segmented structure, adjacent two end roller bodies being mounted with a roller seat, the end part of the roller body being rotatably supported on the roller seat, the roller seat being formed with a space for the translational and lifting movement of the lifting assembly. The lower part of the sliding support block is provided with a driving matching slope on one side and a guiding matching slope on the other side, the sliding support block being extended outward on both sides of the length direction of the guiding matching slope to form guiding flanges, the upper part of the claw being provided with driving slopes on both sides, the upper part of the fixed support column being provided with a guiding slope, the fixed support column being provided with inverted L-shaped pressing plates on both sides of the length direction of the guiding slope, the guiding flanges being extended into the sliding groove formed by the L-shaped pressing plates and the guiding slope, the elastic member being embedded in the upper part of the fixed support column and elastically abutting against the sliding support block. The lower part of the shaping member is mounted with a lifting and retracting driving unit, the output end of the lifting and retracting driving unit being connected with the claw. The lifting positioning driving unit comprises a lifting positioning cylinder, the output end of the lifting positioning cylinder being connected with the positioning column and driving the positioning column to extend upward from the gap between adjacent two conveying rollers. ​ 2. A strapping machine as claimed in claim 1, characterized in that: ​ 3. A lap former as claimed in claim 2, characterised in that: ​ 4. A strapping machine according to any one of claims 1 to 3, wherein: ​ 5. A strapping machine as claimed in any one of claims 1 to 3, wherein: ​ 6. A strapping machine as claimed in any one of claims 1 to 3, wherein: The rotary positioning driving unit comprises a rotary cylinder mounted on the frame side of the tray conveying mechanism, and the output end of the rotary cylinder is connected to the pressing block through a swing arm.

7. A strapping machine as claimed in any one of claims 1 to 3, wherein: The shaping mechanism comprises an upper shaping mechanism mounted on the upper part of the lifting support.

8. A strapping machine as claimed in any one of claims 1 to 3, wherein: The shaping members of the side shaping mechanism and the upper shaping mechanism are in frame structure; The upper and lower ends of the shaping member of the side shaping mechanism are respectively provided with guide frames, and the lifting support is provided with guide supports on both sides of each guide frame, and the guide frame and the guide support are guided by the sliding block and the guide rail; The shaping member of the upper shaping mechanism is guided and mounted on the heightening frame by a guide column, and the heightening frame is mounted on the lifting support.

9. A strapping machine as claimed in any one of claims 1 to 3, wherein: The fixed rack comprises four columns and cross beams connecting the columns in pairs, each column is provided with a chain, and each chain is synchronously lifted by the lifting support through the action of the motor, the synchronous roller and the chain wheel.

10. A strapping machine as claimed in any one of claims 1 to 3, wherein: The opening vertically penetrates the tray supporting strip, and the width of the opening is less than the width of the tray supporting strip. Alternatively, the depth of the opening is less than the height of the tray supporting strip, and the opening is communicated with the insertion slot of the tray forklift.

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