Strapping machine head and strapping machine

Abstract

This invention provides a strapping machine head and a strapping machine. The strapping machine head includes: a mounting module, which includes a mounting base; a tape feeding module, which forms a tape feeding channel; and a welding module, which includes a welding housing, a main shaft, a clamping mechanism, a welding mechanism, and a drive component. The welding housing includes a shell and a maintenance cover plate. A mounting groove is provided on one surface of the shell, forming a maintenance opening on the surface of the shell. The maintenance cover plate is disposed on the shell and configured to cover the maintenance opening. The maintenance cover plate includes a first maintenance plate, the upper end of which is rotatably disposed on the shell. This invention facilitates operator maintenance of the strapping machine head, improving maintenance convenience and reducing maintenance difficulty.

Description

Technical Field

[0001] This invention relates to the field of strapping machine technology, and in particular to a strapping machine head and a strapping machine. Background Technology

[0002] Currently, with the continuous development of the logistics industry, goods typically need to be packaged with strapping before transportation. With the promotion of automatic packaging technology, strapping machines with automatic packaging functions are widely used. For example, Chinese Patent Publication No. CN 111392093 A discloses a packaging machine head and packaging machine. The machine head includes a mounting base, a sealing component, a strapping component, and a drive component. The sealing component and the strapping component require regular maintenance as needed during use, especially the moving welded block in the sealing component, which requires regular maintenance and replacement. Therefore, during maintenance, it is necessary to open the casing on the mounting base, disassemble the sealing component and the strapping component sequentially from the mounting base, and then separately maintain and replace the components. During maintenance, the sealing component and the strapping component need to be completely disassembled for component repair and replacement, which leads to significant maintenance difficulty and low maintenance efficiency. Therefore, how to design a technology that facilitates maintenance and improves maintenance convenience is the technical problem that this invention aims to solve. Summary of the Invention

[0003] This invention provides a strapping machine head and a strapping machine, enabling operators to easily maintain the machine head, thereby improving maintenance convenience and reducing maintenance difficulty.

[0004] This invention provides a head for a strapping machine, comprising:

[0005] The installation module includes a mounting base;

[0006] A tape feeding module, wherein a tape feeding channel is formed in the tape feeding module;

[0007] A welding module includes a welding housing, a spindle, a clamping mechanism, a welding mechanism, and a drive component. The welding housing includes a shell and a maintenance cover. A mounting groove is provided on one surface of the shell, forming a maintenance opening on the surface of the shell. The maintenance cover is disposed on the shell and configured to cover the maintenance opening. The maintenance cover includes a first maintenance plate, the upper end of which is rotatably disposed on the shell. The spindle is arranged laterally and rotatably disposed on the shell, and a first cam and a second cam are provided on the spindle. The welding mechanism includes a moving welding block and a stationary welding block arranged opposite to each other. The clamping mechanism includes a sliding clamping block and a fixed clamping block arranged opposite to each other. The clamping mechanism and the welding mechanism are disposed on the welding housing. The first cam, the second cam, the sliding clamping block, and the moving welding block are all disposed in the mounting groove and located within the maintenance area formed by the maintenance opening. The first maintenance plate is configured to cover at least the outside of the sliding clamping block and the moving welding block when closed. The drive component is configured to drive the spindle to rotate, the first cam is configured to drive the moving welding block closer to the stationary welding block, and the second cam is configured to drive the sliding clamping block closer to the fixed clamping block.

[0008] The welding module and the tape feeding module are mounted on the mounting base and are movable relative to each other.

[0009] The present invention also provides a strapping machine, including a packaging chute and a strapping machine head, wherein the strapping machine head is configured to cooperate with the packaging chute to form a conveying channel for conveying packing straps.

[0010] This invention provides a strapping machine head and strapping machine. By providing a flip-open inspection cover on the welding housing of the welding module, during later use, when maintenance is required, simply opening the inspection cover exposes the locations of components requiring maintenance, such as the moving welding block and the sliding clamping block. This facilitates better maintenance of the moving welding block by the operator. Furthermore, after opening the inspection cover, it is also convenient for the operator to clean and maintain the cam on the rotating shaft and the debris in the mounting groove, without having to disassemble the welding module. This effectively reduces the difficulty of maintenance and improves maintenance convenience. Attached Figure Description

[0011] Figure 1 This is one of the structural schematic diagrams of the strapping head of the present invention;

[0012] Figure 2 This is the second schematic diagram of the structure of the strapping head of the present invention;

[0013] Figure 3 for Figure 1 Exploded view of the middle strapping machine head;

[0014] Figure 4 for Figure 1 A schematic diagram of the welding module in the middle;

[0015] Figure 5 for Figure 1 One of the cross-sectional views of the welding module;

[0016] Figure 6 for Figure 1 Second sectional view of the welding module;

[0017] Figure 7 for Figure 1 Third sectional view of the welding module;

[0018] Figure 8 for Figure 4 A schematic diagram of the welding module after removing the inspection cover;

[0019] Figure 9 for Figure 4 Fourth sectional view of the welding module;

[0020] Figure 10 for Figure 9 A magnified view of a portion of region A in the middle;

[0021] Figure 11 for Figure 9 A magnified view of a portion of region B in the middle;

[0022] Figure 12 for Figure 9 A magnified view of a portion of region C in the middle;

[0023] Figure 13 for Figure 4 A schematic diagram of the welding module under maintenance.

[0024] Figure 14 for Figure 1 One of the structural diagrams of the installation module in the middle;

[0025] Figure 15 for Figure 1 The second structural diagram of the installation module;

[0026] Figure 16 for Figure 1 One of the structural diagrams of the conveyor belt module;

[0027] Figure 17 for Figure 1 Schematic diagram of the conveyor belt module (Part 2);

[0028] Figure 18 for Figure 16 A schematic diagram of the conveyor belt module under maintenance.

[0029] Figure 19 for Figure 16 A schematic diagram of the conveyor belt module without its front panel;

[0030] Figure 20 for Figure 16 Assembly diagram of the second detection switch, the second pressure plate, and the mounting block.

[0031] Figure label:

[0032] Install module 1;

[0033] Mounting base 11, sliding seat 12, first drive component 13, ball screw 14, air control valve 15, guide rail 16, limit switch 17;

[0034] Insertion part 121, fixing hole 122, first connecting plate 123, second connecting plate 124;

[0035] Module 2 for feeding tape;

[0036] Support frame 20, belt feeder housing 21, belt feeder 22, second drive component 23, wheel frame 24, pressure wheel 25, pressure spring 26, third drive component 27, auxiliary belt groove 28, detection mechanism 29;

[0037] Front panel 211, back panel 212, belt feeding component 213, hinge 214, elastic claw 215, second air nozzle 216, first cylinder 271, swing arm 272, second cylinder 291, first detection switch 292, first pressure plate 293, first flange structure 294, second detection switch 295, second pressure plate 296, mounting block 297, second flange 298;

[0038] Feeding groove 2130, first notch 2131, second notch 2132, first outer guide bar 2133, second outer guide bar 2134, first inner guide bar 2135, second inner guide bar 2136;

[0039] Welding module 3;

[0040] Welding housing 31, main spindle 32, clamping mechanism 33, welding mechanism 34, drive component 35;

[0041] Housing 311, inspection cover 312, plug-in mating part 313, first cam 321, second cam 322, third cam 323, fourth cam 324, sliding clamping block 331, fixed clamping block 332, moving welding block 341, stationary welding block 342, driving component 2 343;

[0042] Mounting groove 3111, guide block 3112, guide channel 3113, mounting bracket 3114, mounting guard plate 3115, first air nozzle 3116, first inspection plate 3121, through hole 3120, mounting support plate 3122, rotating plate 3123, spacer 3124, limit stop 3125, second inspection plate 3126, lower clamping mechanism 3301, upper clamping mechanism 3302, and belt threading hole 3311;

[0043] 3101 for inlet tape, 3102 for inlet tape notch, 3103 for outlet tape notch. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings.

[0045] This invention provides a strapping machine, which includes a strapping head, a packaging chute, and other auxiliary components found in conventional strapping machines. The strapping tape enters the strapping head and is fed into the packaging chute, so that the tape wraps around the goods. Then, the strapping head performs operations such as tightening, welding, and cutting the tape to complete the packaging process. The specific structural form of the packaging chute and other auxiliary components in the strapping machine can be referenced from the configuration of conventional strapping machines, and is not limited or elaborated upon here.

[0046] For the strapping machine head, such as Figure 1 As shown, it typically includes an installation module 1, a strapping module 2, and a welding module 3. The installation module 1 serves as a load-bearing component for mounting the strapping module 2 and the welding module 3, and the strapping head is assembled onto the strapping machine via the installation module 1. The strapping module 2 drives the strapping forward, passing it through the welding module 3 and around the goods once. The end of the strapping is then guided back into the welding module 3 via the strapping module 2. The welding module 3 welds and cuts the overlapping areas formed within the strapping, resulting in a loop structure that is securely bound to the surface of the goods.

[0047] The specific methods for conveying the packing strap via the feeding module 2 and cutting and welding via the welding module 3 can be referred to conventional techniques, and will not be limited or elaborated here.

[0048] The structural improvement design of the three modules in the strapping machine head—installation module 1, tape feeding module 2, and welding module 3—is explained with reference to the attached drawings.

[0049] In the first embodiment, regarding the welding module 3, during long-term use, because the welding module 3 needs to weld the packing straps, the moving parts configured in the welding module 3 and the debris generated by the packing straps during the welding process need to be regularly maintained and cleaned.

[0050] To facilitate quick maintenance and cleaning of welding module 3 by operators without excessive disassembly of welding module 3, the following structural design is adopted for welding module 3.

[0051] like Figures 4-12 As shown, the welding module 3 includes a welding housing 31, a spindle 32, a clamping mechanism 33, a welding mechanism 34, and a drive component 35. The welding housing 31 includes a shell 311 and a maintenance cover 312. A mounting groove 3111 is provided on one surface of the shell 311, forming a maintenance port (not marked) on the surface of the shell 311. The maintenance cover 312 is disposed on the shell and configured to cover the maintenance port. The maintenance cover 312 includes a first maintenance plate 3121, the upper end of which is rotatably disposed on the shell. The spindle 32 is arranged laterally and rotatably disposed on the shell 311. A first cam 321 and a second cam 322 are provided on the spindle 32. Wheel 321 and second cam 322 are located in mounting groove 3111; welding mechanism 34 includes a moving welding block 341 and a stationary welding block 342 arranged opposite to each other, clamping mechanism 33 includes a sliding clamping block 331 and a fixed clamping block 332 arranged opposite to each other; clamping mechanism 33 and welding mechanism 34 are mounted on welding machine housing 31, and inspection cover 312 is configured to cover the outside of first cam 321, second cam 322 and moving welding block 341 in the closed state; drive component 35 is configured to drive main shaft 32 to rotate, first cam 321 is configured to drive moving welding block 341 to approach stationary welding block 342, and second cam 322 is configured to drive sliding clamping block 331 to approach fixed clamping block 332;

[0052] The first cam, the second cam, the sliding clamping block, and the moving welding block are all disposed in the mounting groove and located within the maintenance area formed by the inspection port.

[0053] Specifically, during use, the clamping mechanism 33 is used to tighten the packing strap during tensioning and welding / cutting. When the packing strap needs to be tightened, the main shaft 32 rotates so that the second cam 322 presses the sliding clamping block 331 closer to the fixed clamping block 332, so that the packing strap is clamped between the sliding clamping block 331 and the fixed clamping block 332. The welding mechanism 34 is used to weld the overlapping portion of the packing strap located between the moving welding block 341 and the stationary welding block 342. Before welding, the rotating shaft rotates to move the moving welding block 341 closer to the stationary welding block 342, so that the overlapping portion of the packing strap is clamped between the moving welding block 341 and the stationary welding block 342.

[0054] During long-term use, the dynamic welding block 341 needs to be regularly repaired and replaced due to welding wear. Similarly, during the conveying and welding of the strapping, the debris generated by the strapping will also exist in the installation groove 3111.

[0055] When maintenance of the moving weld block 341 and cleaning of debris from the mounting groove 3111 are required, the inspection cover 312 can be flipped open to expose the moving weld block 341 located in the mounting groove 3111. This allows for individual repair and replacement of the moving weld block 341 without extensive disassembly of the welding module 3. Furthermore, after opening the inspection cover 312, the bottom area of ​​the inspection opening is exposed, allowing operators to clean debris from the mounting groove 3111, thereby reducing the need for disassembly and even achieving maintenance without disassembly.

[0056] In addition, during use, when lubricating oil needs to be added to the moving parts in the mounting groove 3111, the inspection cover 312 can be flipped open to facilitate the operator to add lubricating oil to the cam, spindle 32 and other parts.

[0057] Since the first cam, the second cam, the sliding clamping block, and the moving welding block are all located in the mounting groove and within the maintenance area formed by the inspection port, all moving parts in the mounting groove can be inspected and maintained within the maintenance area formed by the inspection port simply by removing the maintenance cover plate from the welding machine housing.

[0058] In some embodiments, to prevent the inspection cover 312 from opening arbitrarily due to external force during the conveying process, the welding module 3 also includes a reset spring, which is configured to apply a spring force to the inspection cover 312 to flip and close.

[0059] Specifically, when the inspection cover 312 is not subjected to external force, under the action of the return spring, the inspection cover 312 is in a normally closed state, that is, the inspection cover 312 covers the entire inspection port.

[0060] During normal belt feeding, the inspection cover 312 is in a closed state under the action of the return spring, at which time the inspection cover 312 covers the inspection port. This ensures both smooth and reliable belt feeding and safe and reliable operation.

[0061] By installing a flip-open inspection cover on the welding module's welding housing, during later use, when maintenance is required, simply opening the inspection cover exposes the location of the moving welding block, facilitating better maintenance by operators. Furthermore, after opening the inspection cover, operators can easily clean and maintain the cam on the rotating shaft and the debris in the mounting groove without disassembling the welding module, effectively reducing maintenance difficulty and improving maintenance convenience.

[0062] Furthermore, the clamping mechanism 33 includes at least two lower clamping mechanisms 3301 arranged at the lower part of the housing 311. Each lower clamping mechanism 3301 includes a sliding clamping block 331 and a fixed clamping block 332 arranged opposite each other. The lower clamping mechanism 3301 is located below the spindle 32, and the welding mechanism 34 is located between the two lower clamping mechanisms 3301. The first inspection plate 3121 is also configured to cover the outside of the sliding clamping block 331 of the lower clamping mechanism 3301 in the closed state.

[0063] Specifically, the two lower clamping mechanisms 3301 are used to clamp the strapping during the welding process to ensure that the overlapping parts of the strapping can be welded together by the welding mechanism 34. The two lower clamping mechanisms 3301 are distributed on both sides of the welding mechanism 34, so that after opening the inspection cover 312, both lower clamping mechanisms 3301 can be exposed at the same time, so as to facilitate the operator to maintain the sliding clamping blocks 331 of the two lower clamping mechanisms 3301.

[0064] In one embodiment, the installation position relationship between the sliding clamping block 331 and the fixed clamping block 332 in the lower clamping mechanism 3301, and the installation position relationship between the moving welding block 341 and the stationary welding block 342 in the welding mechanism 34 are designed as follows.

[0065] Both the sliding clamping block 331 and the moving welding block 341 are set in the mounting groove 3111, with the sliding clamping block 331 of the lower clamping mechanism 3301 positioned above the corresponding fixed clamping block 332, and the moving welding block 341 positioned above the stationary welding block 342; the fixed clamping block 332 and the stationary welding block 342 of the lower clamping mechanism 3301 are set at the lower end of the first inspection plate 3121; a third cam 323 is provided on the main shaft 32, and the third cam 323 is configured to drive the first inspection plate 3121 to rotate.

[0066] Specifically, the sliding clamping block 331 and the moving welding block 341 are disposed in the mounting groove 3111 and are driven by corresponding cams to slide within the mounting groove 3111 to approach the fixed clamping block 332 and the stationary welding block 342. It is understood that, referring to conventional technical solutions, the sliding clamping block 331 and the moving welding block 341 can be reset by springs when not subjected to pressure from the protrusion. That is, when not pushed by the cam, the sliding clamping block 331 and the fixed clamping block 332 move away from each other, and similarly, the moving welding block 341 and the stationary welding block 342 move away from each other.

[0067] Since the fixed clamping block 332 and the static welding block 342 are located at the lower end of the first inspection plate 3121, after the packing strap wraps around the goods and the welding operation is completed, the main shaft 32 rotates to push the first inspection plate 3121 open against the spring force of the reset spring through the third cam 323, thereby causing the packing strap to slide off the surface of the fixed clamping block 332 and the static welding block 342.

[0068] In other words, during use, the first inspection plate 3121 in this application serves two purposes: firstly, it covers moving parts such as the moving welding block 341 to facilitate later maintenance; secondly, it installs and fixes the clamping block 332 and the stationary welding block 342 to meet the requirements for component installation. Furthermore, in conjunction with the drive of the third cam 323, it allows the release of the packing straps binding the outer surface of the goods after the welding operation is completed. The multifunctionality of the first inspection plate 3121 makes the overall structure more compact and helps to reduce the overall volume.

[0069] Furthermore, the bottom side of the housing 311 is provided with an inlet hole 3101 and an inlet notch 3102 arranged vertically, and the other side of the bottom of the housing 311 is provided with an outlet notch 3103; the lower end of the first inspection plate 3121 is provided with a mounting plate 3122, and the fixing clamping block 332 and the static welding block 342 of the lower clamping mechanism 3301 are detachably mounted on the mounting plate 3122; the lower part of the first inspection plate 3121 is also provided with a through hole 3120, and the welding module 3 also includes a rotating plate 3123, the upper end of the rotating plate 3123 is rotatably mounted on the housing, and the lower end of the rotating plate 3123 is rotatably mounted on the housing. The part is provided with a spacer 3124; the main shaft 32 is provided with a fourth cam 324, which is configured to drive the rotating plate inspection plate to rotate; wherein, when the first inspection plate 3121 and the rotating plate 3123 are both in the closed state, the mounting plate 3122 covers the lower part of the inlet notch 3102 and the outlet notch 3103, the spacer 3124 is inserted in the through hole 3120 and is located between the moving welding block 341 and the stationary welding block 342, and the spacer 3124 is configured to guide the packing tape entering from the inlet hole 3101 to be guided and conveyed from the upper surface of the spacer 3124 to the outlet notch 3103.

[0070] Specifically, the welding housing 31 has an inlet hole 3101 and an inlet notch 3102 on the side near the feeding module 2, and an outlet notch 3103 on the side away from the feeding module 2. The strapping conveyed from the feeding module 2 enters the welding housing 31 through the inlet hole 3101 and exits through the outlet notch 3103 into the packaging chute of the strapping machine to be conveyed around the goods. Finally, guided by the feeding module 2, the strapping re-enters the welding housing 31 through the inlet notch 3102, forming an overlapping area of ​​the strapping on the moving welding block 341 and the stationary welding block 342.

[0071] like Figures 9-12 As shown, during the feeding process, the rotating plate 3123 is in a closed state, causing the spacer 3124 to be located between the moving welding block 341 and the stationary welding block 342, thereby forming two channels, one above the other, between the moving welding block 341 and the stationary welding block 342. After the strapping is fed in through the inlet hole 3101, it is conveyed from the upper surface of the spacer 3124 to the outlet notch 3103. After the strapping wraps around the goods, it enters through the inlet notch 3102 and is conveyed to the area below the spacer 3124, where the strapping forms an overlap between the upper and lower parts of the spacer 3124.

[0072] In this process, after the strapping is fed, before welding, the main shaft 32 rotates to push the rotating plate 3123 outward through the fourth cam 324, so that the spacer 3124 is disengaged from the moving welding block 341 and the stationary welding block 342. In this way, the overlapping strapping can be squeezed and welded together by the welding mechanism.

[0073] To facilitate the smooth transport of the packing strap within the welding housing 31, refer to Figure 9 The orientation of the lower clamping mechanism 3301 in the figure. Located in... Figure 9 A belt threading hole 331 is provided on the sliding clamping block 331 adjacent to the belt threading hole 3101 on the left side. A spacer 3124 is inclinedly arranged between the two sliding clamping blocks 331, and the upper end of the spacer 3124 is adjacent to the lower edge of the belt threading hole 3311.

[0074] Specifically, during the strapping process, the strapping entering through the inlet hole 3101 passes through the threading hole 3311, through the sliding clamping block 331 on the left, and is guided by the surface of the spacer 3124 through the gap between the sliding clamping block 331 and the fixed clamping block 332 in the lower clamping mechanism 3301 on the right, exiting through the outlet notch 3103. The strapping wraps around the goods and re-enters the gap between the sliding clamping block 331 and the fixed clamping block 332 in the lower clamping mechanism 3301 on the left through the inlet notch 3102. Finally, the free end of the strapping is conveyed to the area between the spacer 3124 and the static welding block 342 to complete the strapping feeding.

[0075] In order to position the free end of the packing strap, a limit block 3125 is provided below the lower end of the spacer 3124. The limit block 3125 is set on the mounting plate 3122 and located between the static welding block 342 and the corresponding side fixing clamping block 332.

[0076] Specifically, the limiting block 3125 is arranged on the same side of the spacer 3124 and the static welding block 342, thereby limiting the free end of the packing tape entering between the spacer 3124 and the static welding block 342 through the side surface of the limiting block 3125.

[0077] In addition, in order to smoothly guide the packing tape from the upper surface of the spacer 3124 to the tape exit notch 3103, a guide block 3112 is provided above the limit stop 3125. The guide block 3112 is provided in the mounting groove 3111 and located between the movable welding block 341 and the corresponding sliding clamping block 331. The bottom surface of the guide block 3112 forms a guide surface (not marked), which is configured to extend downward at an angle along the conveying direction of the packing tape.

[0078] Specifically, a guiding channel is formed between the guide block 3112 and the limiting block 3125, so that the packing tape is conveyed from the upper surface of the spacer 3124, guided by the guide surface of the guide block 3112 and the upper surface of the limiting block 3125, enters the lower clamping mechanism 3301 on the right side, and is finally output from the tape exit notch 3103.

[0079] Furthermore, in order to effectively tighten the packing strap, a guide channel 3113 is provided on the top of the welding housing 31. The guide channel is configured to guide the packing strap into the feeding module 2. The clamping mechanism 33 also includes an upper clamping mechanism 3302, which is located above the main shaft 32. The upper clamping mechanism 3302 includes a fixed clamping block 332 and a sliding clamping block 331 arranged opposite to each other. The upper clamping mechanism 3302 is configured to clamp the packing strap passing through the guide channel 3113.

[0080] The inspection cover 312 also includes a second inspection plate 3126, which is detachably disposed on the housing 311 and located above the first inspection plate 3121. The second inspection plate 3126 is configured to cover the exterior of the sliding clamping block 331 of the upper clamping mechanism 3302.

[0081] Specifically, in order to facilitate maintenance of the top clamping mechanism 3302, the inspection cover 312 also includes a second inspection plate 3126. The second inspection plate 3126 can be installed on the housing 311 and cover the inspection port by means of screws or other detachable installation methods.

[0082] The following is in conjunction with the appendix Figures 5-7 The status of welding module 3 during the feeding, tensioning and welding processes of the packing strap is described.

[0083] like Figure 5 As shown, during the conveying of the packing strap, both the first inspection plate 3121 and the rotating plate 3123 are in the closed state. At this time, the spacer 3124 is spaced between the moving welding block 341 and the stationary welding block 342. The packing strap is input from the inlet hole 3101, passes through the threading hole 3311, the upper surface of the spacer 3124, and the clamping space formed by the lower clamping mechanism 3301 on the right side, and is output from the outlet notch 3103 to the external packaging chute. The packing strap conveyed from the packaging chute wraps around the goods, is guided by the feeding module 2, enters from the inlet notch 3102, and is conveyed to the lower spacer 3124 through the clamping space formed by the lower clamping mechanism 3301 on the left side, and is limited and blocked by the limiting block 3125.

[0084] like Figure 6 As shown, before tightening the strapping, the main shaft 32 rotates, causing the rotating plate 3123 to flip outward via the fourth cam 324, so that the spacer 3124 disengages from between the moving welding block 341 and the stationary welding block 342. Simultaneously, the upper clamping mechanism 3302 and the lower clamping mechanism 3301 on the left clamp the strapping, allowing it to be tightened. During the tightening process, the strapping feeding module 2 and the welding module 3 separate, ensuring the strapping is firmly pressed against the surface of the goods. After the strapping is tightened, welding can be performed, using the cooperation of the moving welding block 341 and the stationary welding block 342 to weld the overlapping portions of the strapping together.

[0085] like Figure 7 As shown, after welding is completed, the strapping needs to be removed from the welding module 3. At this time, the main shaft 32 rotates to drive the first inspection plate 3121 to flip outward through the third cam 323, so that the strapping slides off the surface of the fixed clamping block 332 and the static welding block 342 installed on the mounting plate 3122, thereby realizing the separation of the strapping from the welding module 3.

[0086] In some embodiments, the physical manifestation of the welding mechanism 34 may be achieved by methods such as heat welding or friction welding.

[0087] When using the heating welding method, the moving welding block 341 is equipped with an electric heating component (not shown), which heats and welds the overlapping parts of the packing straps.

[0088] In the friction welding method, multiple friction protrusions (unmarked) are respectively provided on the opposing surfaces of the moving welding block 341 and the stationary welding block 342. The welding module 3 also includes a second driving component 343, which is configured to drive the moving welding block 341 to reciprocate relative to the stationary welding block 342.

[0089] Furthermore, to achieve the requirements of miniaturization and compact design, the drive component 35 and drive component 343 configured on the welding module 3 can be mounted on the back of the housing 311. For this purpose, a mounting bracket 3114 is provided on the back of the housing 311, and the drive component 35 and drive component 343 are mounted on the mounting bracket 3114.

[0090] Specifically, drive component 1 35 and drive component 2 343 are mounted and fixed by the mounting bracket 3114 on the back of housing 311. Housing 311 is further fixed on the mounting module 1 by the mounting bracket 3114. In this way, the space in the front and rear thickness direction is fully utilized to install drive component 1 35 and drive component 2 343, thereby reducing the space occupied in the left and right length direction.

[0091] like Figure 13 As shown, to ensure that the moving parts in the clamping mechanism 33 and welding mechanism 34 can reliably slide in the mounting groove 3111, mounting guard plates 3115 can be provided above and below the main shaft 32 respectively. The mounting guard plates 3115 will protect the outside of the sliding clamping block 331 and the moving welding block 341. In this way, during maintenance, after the operator opens the inspection cover plate 312, the mounting guard plate 3115 at the corresponding position can be removed to replace or repair the sliding clamping block 331 and the moving welding block 341.

[0092] In a preferred embodiment, in order to reduce the frequency of cleaning debris in the mounting groove 3111, a first air nozzle 3116 is also provided on the top of the mounting groove 3111, and the first air nozzle 3116 is configured to blow air downwards.

[0093] Specifically, during use, the first inspection plate 3121 and the rotating plate 3123 will intermittently open to provide access for maintenance. At this time, the first air nozzle 3116 vents and blows air downwards to promptly expel debris from the mounting groove 3111 when the first inspection plate 3121 and the rotating plate 3123 are open. This reduces the frequency of cleaning debris from inside the mounting groove 3111 by operators and also reduces wear on moving parts within the mounting groove 3111, thereby reducing the frequency of maintenance and replacement.

[0094] Example 2, as Figures 14-15As shown, the installation module 1 includes an installation base 11, a sliding seat 12, and a first driving component 13. The sliding seat 12 is slidably disposed on the installation base 11, and the driving component is configured to drive the sliding seat 12 to reciprocate on the installation base 11. The tape feeding module 2 is detachably disposed on the installation base 11, and the welding module 3 is detachably disposed on the sliding seat 12.

[0095] Specifically, the mounting module 1, the tape feeding module 2, and the welding module 3 adopt a modular design. The tape feeding module 2 is detachably mounted on the mounting base 11, and the welding module 3 is detachably mounted on the sliding seat 12.

[0096] The mounting base 11 is equipped with a first driving component 13, which drives the sliding seat 12 to slide on the mounting base 11 to meet the requirement of relative sliding between the tape feeding module 2 and the welding module 3.

[0097] Furthermore, in order to meet the requirements of easy disassembly and assembly, the assembly method of welding module 3 and installation module 1 can adopt the following structural design to reduce the amount of bolts used.

[0098] A plug-in portion 121 is provided on one side of the sliding seat 12, and a fixing hole 122 is provided on the other side of the sliding seat 12; a plug-in mating portion 313 is provided on one side of the welding housing 31, and a mounting hole (not shown) is provided on the other side of the welding housing 31; wherein, the plug-in portion 121 and the plug-in mating portion 313 are plugged together, and the bolt passes through the mounting hole and is connected to the fixing hole 122.

[0099] Specifically, during assembly, the welding housing 31 needs to be installed and fixed on the sliding seat 12. One side of the welding housing 31 is connected to the insertion part 121 through the insertion mating part 313, and the other side is fixed by bolts inserted into the mounting hole and fixing hole 122. In this way, during assembly, only one side of the welding housing 31 needs to be fixed with bolts, which can effectively reduce the number of bolts used.

[0100] Furthermore, during disassembly, only the bolts in the mounting holes need to be removed, and the welded housing 31 can be pulled out at an angle to separate the insertion part 121 from the insertion mating part 313.

[0101] Specifically, regarding the methods for fixing the welding housing 31 to the sliding seat 12 with bolts: Method 1, the fixing hole 122 is a threaded hole, and the bolt is threadedly connected to the threaded hole; Method 2, the bolt passes through the fixing hole 122 and is threadedly connected to a nut.

[0102] Furthermore, the first drive component 13 can be implemented using conventional drive components such as motors or cylinders.

[0103] Specifically, when the first drive component 13 uses a motor, such as Figure 14 As shown, the motor shaft is connected to the sliding seat 12 via a ball screw 14. During use, the motor rotates forward and backward to drive the screw in the ball screw 14 to rotate forward or backward, thereby driving the sliding seat 12 to reciprocate.

[0104] When the first drive component 13 uses a drive cylinder, such as Figure 15 As shown, the piston rod of the drive cylinder is connected to the sliding seat 12. During use, controlling the extension and retraction of the drive cylinder allows for convenient and quick control of the reciprocating sliding of the sliding seat 12. To further facilitate control of the drive cylinder's movement, an air control valve 15 can be installed on the mounting base 11, and this air control valve is connected to the drive cylinder via an air pipe.

[0105] Furthermore, in order to ensure the smooth sliding of the sliding seat 12, a guide rail 16 is also provided on the mounting base 11. The sliding seat 12 is slidably mounted on the guide rail 16, and limit switches 17 are respectively provided at both ends of the guide rail 16.

[0106] Specifically, the mounting base 11 is equipped with a guide rail 16 to mount the sliding seat 12, ensuring smooth sliding of the sliding seat 12 on the mounting base 11. The travel range of the sliding seat 12 can be precisely controlled by configuring a limit switch 17. Especially when the first drive component 13 is a motor, the limit switch 17 controls the on / off state of the motor.

[0107] Furthermore, a first connecting plate 123 is provided on the side of the sliding seat 12 near the first driving component 13, and a plug-in portion 121 is provided on the first connecting plate 123; a second connecting plate 124 is provided on the side of the sliding seat 12 away from the first driving component 13, and the second connecting plate 124 and the first connecting plate 123 are arranged opposite to each other, and a fixing hole 122 is provided on the second connecting plate 124.

[0108] Specifically, a first connecting plate 123 and a second connecting plate 124 are provided on the surface of the sliding seat 12. The first connecting plate 123 has an opening to form a plug-in part 121. Correspondingly, a protruding structure is provided on the welding housing 31 to form a plug-in mating part 313. The protruding structure can be inserted into the opening on the first connecting plate 123.

[0109] Furthermore, for the tape feeding module 2, which is directly mounted and fixed on the mounting base 11, in order to make the overall structure more compact, a support frame 20 can be provided on the back of the tape feeding module 2. The support frame 20 is detachably mounted on the base.

[0110] Specifically, a support frame 20 is provided on the back of the tape feeding module 2 to enable it to be mounted on the mounting base plate. The support frame 20 allows the tape feeding module 2 to span across the first drive component 13, thus meeting the requirements of a compact overall structure design. The support frame 20 forms a clearance space in which the first drive component 13 is located.

[0111] Example 3, as follows Figures 16-20 As shown, the tape feeding module 2 includes a tape feeding housing 21, a tape feeding wheel 22, and a second drive component 23. The tape feeding housing 21 includes a front panel 211, a rear panel 212, and a tape feeding component 213. A hinge 214 is provided on one side of the rear panel 212, and the front panel 211 is provided on the hinge 214. The tape feeding wheel 22 is rotatably provided on the rear panel 212, and the tape feeding component 213 is provided on the rear panel 212. A tape feeding groove 2130 is formed on the tape feeding component 213, and a first notch 2131 communicating with the tape feeding groove 2130 is provided on the inner side of the tape feeding component 213. The tape feeding wheel 22 is rotatably provided on the rear panel 212 at the first notch 2131.

[0112] With the front panel 211 closed, the front panel 211 and the rear panel 212 are arranged opposite to each other. The belt feeding component 213 and the belt feeding wheel are located between the front panel 211 and the rear panel 212, and the belt feeding groove 2130 forms the belt feeding channel between the front panel 211 and the rear panel 212.

[0113] Specifically, for the belt feeding module 2, after conveying the packing belt for a long time, it is necessary to clean the debris in the belt feeding groove 2130 and maintain the belt feeding wheel. At this time, the front panel 211 can be opened by flipping to expose the belt feeding groove 2130 and the belt feeding wheel 22, so as to facilitate the operator to clean and maintain it.

[0114] During the feeding process, the feeding wheel 22 contacts the strapping through the first notch 2131. Under the driving action of the second driving component 23, the feeding wheel 22 rotates to drive the strapping to slide and be conveyed in the feeding groove 2130.

[0115] Since one side of the front panel 211 is mounted on the hinge 214, the front panel 211 needs to be reliably closed during use. For this purpose, the side of the front panel 211 away from the hinge 214 can be bolted to the back panel 212.

[0116] In order to facilitate the limiting of the other side of the front panel 211, the other side of the rear panel 212 is provided with a flexible claw 215; when the front panel 211 is closed, the flexible claw 215 is locked at the edge of the front panel 211.

[0117] Specifically, during use, the feeding module 2 requires regular cleaning and maintenance. Furthermore, when the strapping tape gets stuck in the feeding slot 2130, it needs timely adjustment and sorting. To address this, the other side of the front panel 211 is positioned and fixed using elastic claws 215. When the operator needs to open the front panel 211, they only need to pull it to open it.

[0118] Furthermore, during the conveying of the packing strap, the front panel 211 is in a closed state, and the elastic claws 215 can reliably lock onto the edge of the front panel 211 to ensure that the front panel 211 reliably covers the feeding component 213 and the feeding wheel 22.

[0119] Furthermore, in order to ensure that the feed roller 22 can reliably drive the conveyor, the outer side of the feed component 213 is provided with a second notch 2132 that communicates with the feed groove 2130; the feed module 2 also includes a wheel frame 24, a pressure roller 25 and a pressure spring 26. The wheel frame 24 is rotatably mounted on the feed housing 21 and located on the outer side of the feed component 213. The pressure roller 25 is rotatably mounted on the wheel frame 24 and located at the second notch 2132. The pressure spring 26 abuts against the wheel frame 24 and is configured to apply a spring force to the wheel frame 24 so that the pressure roller 25 abuts against the feed roller 22.

[0120] Specifically, the wheel frame 24 is mounted on the outside of the front panel 211 and the rear panel 212 and can drive the pressure wheel 25 to rotate. Under the action of the pressure spring 26, the edge of the pressure wheel 25 can extend into the feed groove 2130 through the second notch 2132 and abut against the feed wheel 22.

[0121] During the conveying of the strapping, the strapping is clamped between the feed roller 22 and the pressure roller 25 to ensure that the feed roller 22 can provide effective driving force to the strapping so that the strapping can be conveyed in the feed trough 2130.

[0122] Furthermore, the belt feeding module 2 also includes a third drive component 27, which is configured to drive the wheel frame 24 to move the pressure wheel 25 away from the belt feeding wheel 22.

[0123] Specifically, during normal strapping, the pressure spring 26 applies a spring force to the wheel frame 24 so that the pressure wheel 25 presses against the strapping wheel 22. When the strapping head is tightening the strapping, the third drive component 27 drives the wheel frame 24 to rotate so that the pressure wheel 25 moves away from the strapping wheel 22, thereby ensuring that the strapping can be reliably tightened.

[0124] The third drive component 27 includes a first cylinder 271 and a swing arm 272. The swing arm 272 is provided with a protruding structure (not marked). One end of the swing arm 272 is rotatably mounted on the belt feeder housing 21. The first cylinder 271 is hinged to the other end of the belt feeder housing 21 and the swing arm 272. The protruding structure abuts against the free end of the wheel frame 24.

[0125] When it is necessary to drive the wheel frame 24 to rotate so that the pressure wheel 25 leaves the feed wheel 22, the first cylinder 271 drives the swing arm 272 to rotate so as to lift the wheel frame 24 through the protruding structure, thereby causing the pressure wheel 25 to leave the feed wheel 22.

[0126] Furthermore, the tape feeding component 213 includes an outer guide bar (unmarked) and an inner guide bar (unmarked), which are respectively disposed on the back plate 212, and a tape feeding groove 2130 is formed between the outer guide bar and the inner guide bar.

[0127] Specifically, for ease of processing, the feeding component 213 is formed by inner and outer guide bars arranged inside and outside, creating a feeding groove 2130.

[0128] In order to form the first gap 2131 and the second gap 2132, the outer guide strip includes a first outer guide strip 2133 and a second outer guide strip 2134, which are arranged at intervals, and the second gap 2132 is formed between the first outer guide strip 2133 and the second outer guide strip 2134; the inner guide strip includes a first inner guide strip 2135 and a second inner guide strip 2136, which are arranged at intervals, and the first gap 2131 is formed between the first inner guide strip 2135 and the second inner guide strip 2136.

[0129] Furthermore, in order to facilitate guiding the strapping from the welding module 3 into the strapping module 2 and accurately transporting it back to the welding module 3, the strapping channel is generally arc-shaped, and the inlet and outlet of the strapping channel are located on the same side of the strapping machine housing 21.

[0130] The tape feeding module 2 also includes an auxiliary tape groove 28, which is located at the bottom of the tape feeding housing 21 and below the tape feeding channel. Furthermore, the auxiliary tape groove 28 has a strip-shaped structure, and its outlet is located below the outlet of the tape feeding channel.

[0131] Furthermore, a detection mechanism 29 is also provided on the tape feeder housing 21. The detection mechanism 29 includes a second cylinder 291 and a first detection switch 292. The second cylinder 291 is arranged vertically. A first pressure plate 293 is provided at the lower end of the piston rod of the second cylinder 291. A first flange structure 294 is provided on one side of the first pressure plate. The first detection switch is provided on the tape feeder housing 21 and is configured to detect the position of the first flange structure.

[0132] Specifically, in actual use, the strapping head of the strapping machine needs to be as close to the goods as possible during the strapping feeding and welding process. Therefore, the strapping head needs to move close to the goods during operation to perform strapping feeding, tightening, and welding operations. To precisely control the overall movement of the strapping head as it approaches the goods, a constantly ventilated second cylinder 291, in conjunction with a first pressure plate 293, is used to control the distance.

[0133] When the strapping head moves towards the cargo, after the first pressure plate 293 abuts against the cargo, the first pressure plate 293, restricted by the cargo, will cause the piston rod of the second cylinder 291 to retract due to internal air pressure. During the retraction process, the first detection switch 292 can detect the first flange structure 294 to trigger the stop of the strapping head from continuing to move, thereby ensuring that the distance between the strapping head and the cargo is within the set range.

[0134] In order to slow down the movement speed of the strapping head after approaching the goods, a magnetic switch (not shown) can be installed on the second cylinder 291, and a magnet that cooperates with the magnetic switch is installed on the piston rod of the second cylinder 291.

[0135] Specifically, since the second cylinder 291 is constantly ventilated during use, the magnetic control switch is positioned outside the cylinder body of the second cylinder 291, near the inner end of the piston rod in its extended state. During use, when the first pressure plate 293 abuts against the cargo to retract the piston rod, the magnet leaves the detection area of ​​the magnetic control switch, thereby controlling the reduction in the movement speed of the strapping head to more precisely control its position when stationary.

[0136] The method of moving the strapping head on the strapping machine can be referenced from conventional strapping machines. The specific control process will not be limited or elaborated here.

[0137] Furthermore, to improve packing accuracy by promptly detecting whether the packing straps outside the goods are broken during the tightening and welding process, the detection mechanism 29 also includes a second detection switch 295, a second pressure plate 296, an elastic reset member (not shown), and a mounting block 297. The second detection switch 295 is mounted on the mounting block 297. The second pressure plate 296 is rotatably mounted on the mounting block 297 and configured to trigger the second detection switch 295 when it rotates under force. The elastic reset member is located between the second pressure plate 296 and the mounting block 297.

[0138] During use, when the strapping head tightens the strapping, the strapping detaches from the strapping head's feeding module and welding module 3 and tightens around the outside of the goods. The detached strapping presses against the second pressure plate 296, causing the second pressure plate 296 to adhere to the surface of the goods. The second pressure plate 296 rotates due to the pull of the strapping and triggers the second detection switch 295.

[0139] Before the strapping head moves and resets, the second pressure plate 296 always presses against the surface of the goods. If the strapping breaks, since the strapping does not apply force to the second pressure plate 296, the second pressure plate 296 will reset under the action of the elastic reset component. The second pressure plate 296 will no longer trigger the second detection switch 295. At this time, it can be known that the strapping is broken, and the operator can be notified in time to take action.

[0140] If the strapping strap is not broken, during the reverse movement and reset of the strapping head, the second pressure plate 296 will continue to rotate, causing it to disengage from the strapping strap and the goods. To facilitate this disengagement, the free end of the second pressure plate 296 is provided with a second flange 298. This flange 298 covers the outside of the auxiliary strap groove 28, allowing the strapping strap to disengage from the auxiliary strap groove 28 and press against the second flange 298, thus causing the second pressure plate 296 to rotate.

[0141] Additionally, a second air nozzle 216 may be provided between the front panel 211 and the rear panel 212.

[0142] Specifically, during use, after the second air nozzle 216 is vented, it blows air into the space between the front panel 211 and the rear panel 212, using the air from the second air nozzle 216 to promptly blow out debris. This reduces the frequency of cleaning internal debris by operators and also reduces wear on the feed rollers caused by debris, thereby reducing the frequency of maintenance and replacement.

Claims

1. A head for a strapping machine, characterized in that, include: The installation module includes a mounting base; A tape feeding module, wherein a tape feeding channel is formed in the tape feeding module; A welding module includes a welding housing, a spindle, a clamping mechanism, a welding mechanism, and a drive component. The welding housing includes a shell and a maintenance cover. A mounting groove is provided on one surface of the shell, forming a maintenance opening on the surface of the shell. The maintenance cover is disposed on the shell and configured to cover the maintenance opening. The maintenance cover includes a first maintenance plate, the upper end of which is rotatably disposed on the shell. The spindle is arranged laterally and rotatably disposed on the shell, and a first cam and a second cam are provided on the spindle. The welding mechanism includes a moving welding block and a stationary welding block arranged opposite to each other. The clamping mechanism includes a sliding clamping block and a fixed clamping block arranged opposite to each other. The clamping mechanism and the welding mechanism are disposed on the welding housing. The first cam, the second cam, the sliding clamping block, and the moving welding block are all disposed in the mounting groove and located within the maintenance area formed by the maintenance opening. The first maintenance plate is configured to cover at least the outside of the sliding clamping block and the moving welding block when closed. The drive component is configured to drive the spindle to rotate, the first cam is configured to drive the moving welding block closer to the stationary welding block, and the second cam is configured to drive the sliding clamping block closer to the fixed clamping block. The welding module and the tape feeding module are mounted on the mounting base and are movable relative to each other. The clamping mechanism includes two lower clamping mechanisms, each of which includes a sliding clamping block and a fixed clamping block arranged opposite each other; the lower clamping mechanisms are located below the spindle, and the welding mechanism is located between the two lower clamping mechanisms. The bottom side of the housing is provided with a tape inlet hole and a tape inlet notch arranged vertically, and the bottom side of the housing is provided with a tape outlet notch; The lower end of the first inspection plate is provided with a mounting plate, and the fixed clamping block and the static welding block of the lower clamping mechanism are detachably mounted on the mounting plate; The lower part of the first inspection plate is also provided with a through hole. The welding module also includes a rotating plate. The upper end of the rotating plate is rotatably mounted on the housing, and the lower end of the rotating plate is provided with a spacer. A fourth cam is provided on the main shaft, and the fourth cam is configured to drive the rotating plate inspection plate to rotate. In this configuration, with both the first inspection plate and the rotating plate in the closed state, the mounting plate covers the lower part of the inlet and outlet notches, the spacer is inserted into the through hole and located between the moving welding block and the stationary welding block, and the spacer is configured to guide the packing tape entering from the inlet hole from the upper surface of the spacer to the outlet notch.

2. The strapping machine head according to claim 1, characterized in that, The first inspection plate is also configured to cover the outside of the sliding clamping block of the lower clamping mechanism when closed.

3. The strapping machine head according to claim 2, characterized in that, The sliding clamping block of the lower clamping mechanism is located above the corresponding fixed clamping block, and the moving welding block is located above the stationary welding block; The fixed clamping block and the static welding block of the lower clamping mechanism are disposed at the lower end of the first inspection plate. In addition, a third cam is provided on the main shaft, and the third cam is configured to drive the first inspection plate to rotate.

4. The strapping machine head according to claim 1, characterized in that, The top of the welding machine housing is provided with a guide belt channel, which is configured to guide the packing strap into the feeding module; The clamping mechanism further includes an upper clamping mechanism located above the main shaft. The upper clamping mechanism includes the fixed clamping block and the sliding clamping block arranged opposite each other. The upper clamping mechanism is configured to clamp the packing strap passing through the guide channel. The inspection cover also includes a second inspection plate, which is detachably disposed on the housing and located above the first inspection plate. The second inspection plate is configured to cover the exterior of the sliding clamping block of the upper clamping mechanism.

5. The strapping machine head according to claim 1, characterized in that, The mounting module further includes a sliding seat and a first driving component. The sliding seat is slidably disposed on the mounting base, and the driving component is configured to drive the sliding seat to reciprocate on the mounting base. The tape feeding module is detachably mounted on the mounting base, and the welding module is detachably mounted on the sliding seat.

6. The strapping machine head according to claim 5, characterized in that, The sliding seat has a plug-in part on one side and a fixing hole on the other side; the welding machine housing has a plug-in mating part on one side and a mounting hole on the other side. The plug-in part is inserted into the plug-in mating part, and the bolt passes through the mounting hole and is connected to the fixing hole.

7. The strapping machine head according to claim 1, characterized in that, The tape feeding module includes a tape feeding housing, a tape feeding wheel, and a second drive component. The tape feeding housing includes a front panel, a back panel, and a tape feeding component. A hinge is provided on one side of the back panel, and the front panel is disposed on the hinge. The tape feeding wheel is rotatably disposed on the back panel, and the tape feeding component is disposed on the back panel. A tape feeding groove is formed on the tape feeding component, and a first notch communicating with the tape feeding groove is provided on the inner side of the tape feeding component. The tape feeding wheel is rotatably disposed on the back panel at the first notch. With the front panel closed, the front panel and the rear panel are arranged opposite each other, the belt feeding component and the belt feeding wheel are located between the front panel and the rear panel, and the belt feeding groove forms the belt feeding channel between the front panel and the rear panel.

8. The strapping machine head according to claim 7, characterized in that, The outer side of the feeding component is provided with a second notch that communicates with the feeding groove; The belt feeding module further includes a wheel frame, a pressure wheel, and a pressure spring. The wheel frame is rotatably mounted on the belt feeding housing and located outside the belt feeding component. The pressure wheel is rotatably mounted on the wheel frame and located at the second notch. The pressure spring abuts against the wheel frame and is configured to apply a spring force to the wheel frame so that the pressure wheel abuts against the belt feeding wheel.

9. A strapping machine, comprising a packaging chute, characterized in that, It also includes a strapping machine head as described in any one of claims 1-8, the strapping machine head being configured to cooperate with the packaging chute to form a conveying channel for conveying the strapping.

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