Belt track mechanism of bundling device and bundling device

Abstract

The utility model provides a tape track mechanism of a strapping device and the strapping device, and belongs to the technical field of strapping devices.The tape track mechanism comprises a fixed ring, a movable ring and a first driving mechanism, an annular groove is formed in the inner ring of the fixed ring in the circumferential direction, and an opening communicated with the annular groove is formed in the outer ring of the fixed ring; the movable ring is arranged in the axial direction of the inner ring of the fixed ring in a sliding mode, under driving of the first driving mechanism, the movable ring moves relative to the fixed ring and is provided with a tape penetrating position for shielding the annular groove and forming an annular tape way with the annular groove and a tape drawing position for opening the annular groove, and a strapping tape penetrates through the opening along the annular tape way. The fixed ring and the movable ring are oppositely closed to form the closed annular belt track, so that the risk that the strapping tape is separated from the belt track is completely avoided, and the stability and the reliability of the strapping device are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bundling device technical field, specifically related to a kind of bandway mechanism and bundling device of bundling device. BACKGROUND

[0002] Bundling device is also called packing machine, bundling machine or banding machine, which uses bundling belt to bundle product or packaging, then tightens and combines two ends by heat sealing head heat fusion bonding method.Packing machine is used to reinforce packaging, so that goods do not scatter during transportation and storage due to poor bundling.

[0003] The prior art such as the patent with publication number CN217100580U discloses a bandway structure and bundling machine, the bandway structure includes: a bandway provided with a guide groove for guiding and accommodating the bundling belt, the guide groove is arc-shaped, one end of the guide groove is provided with an inlet for cooperating with the bundling belt, and the other end is provided with an outlet for cooperating with the bundling belt. In this bandway structure, there is still a risk of the bundling belt detaching from the guide groove during threading, which reduces the reliability and stability of the bundling device. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of the prior art, and provides a bandway mechanism and bundling device of bundling device.

[0005] The technical scheme adopted by the utility model is as follows: in the first aspect, the application provides a bandway mechanism of bundling device, which comprises a fixed ring, a moving ring and a first driving mechanism, the inner ring of the fixed ring is provided with an annular groove in the circumferential direction, and the outer ring is provided with an opening communicating with the annular groove, the moving ring is axially slidingly arranged along the inner ring of the fixed ring, and under the driving of the first driving mechanism, the moving ring moves relative to the fixed ring to have a threading position for shielding the annular groove and forming an annular bandway, and a stripping position for opening the annular groove, and the bundling belt is threaded along the annular bandway through the opening.

[0006] In some embodiments, a baffle is provided on the moving ring corresponding to the opening position, and when the moving ring is in the stripping position, the baffle shields the corresponding part of the annular groove, and the moving ring moves relative to the fixed ring to have a discharging position where the baffle does not shield the annular groove.

[0007] In some embodiments, a first slot is provided on the moving ring corresponding to the opening position, the baffle is detachably connected to the first slot, and a second slot is provided on the fixed ring at the opening position, when the moving ring is in the threading position, one end of the baffle extends out of the first slot and inserts into the second slot.

[0008] In some embodiments, the movable ring comprises a first ring-shaped part and a second ring-shaped part, the outer diameter of the first ring-shaped part is larger than that of the second ring-shaped part, the second ring-shaped part is matched with the inner ring of the fixed ring, when the movable ring is in the strapping position, the first ring-shaped part is embedded in the inner ring of the fixed ring, and the second ring-shaped part abuts against the end face of the fixed ring.

[0009] In some embodiments, the ring-shaped groove comprises a strapping entrance, and the fixed ring is provided with a hot hole in communication with the ring-shaped belt channel at one end close to the strapping entrance.

[0010] In some embodiments, the baffle is located behind the opening and the hot hole, and the hot hole and the opening are both located in the projection area of the baffle.

[0011] In some embodiments, the fixed ring is provided with a mounting plate, the movable ring is provided with a connecting plate, the first driving mechanism comprises a driving piece, a fourth sliding rod and a fourth sliding seat, the fourth sliding seat is arranged on the mounting plate, the fourth sliding rod is arranged on the fourth sliding seat in the axial direction of the fixed ring, and one end of the fourth sliding rod is connected with the driving piece, and the other end is connected with the connecting plate.

[0012] In some embodiments, the fixed ring is provided with a first placement table, the movable ring is provided with a second placement table, the second placement table moves synchronously with the movable ring, the placement end faces of the first placement table and the second placement table are at the same horizontal height, when the movable ring is in the strapping position, the first placement table and the second placement table are close to each other, when the movable ring is in the unstrapping position, a gap for the strapping belt to pass through is formed between the first placement table and the second placement table.

[0013] In some embodiments, the opening is provided with a guide face at one side close to the starting end of the ring-shaped groove.

[0014] In the second aspect, the application provides a strapping device, which comprises the belt channel mechanism of the strapping device, and further comprises a support, the fixed ring is arranged on the support, the support is provided with a strapping and unstrapping mechanism, a pressing mechanism, a hot head mechanism and a cutting mechanism, the strapping and unstrapping mechanism is used for strapping and unstrapping of the strapping belt, the pressing mechanism is used for pressing one end of the strapping belt before unstrapping of the strapping belt, the hot head mechanism is used for heat sealing and fixing of the strapping belt after unstrapping of the strapping belt, and the cutting mechanism is used for cutting of the strapping belt.

[0015] The application has the following beneficial effects: in the application, the fixed ring and the movable ring are matched to form a closed ring-shaped belt channel, which completely avoids the risk of the strapping belt separating from the belt channel, and greatly improves the stability and reliability of the strapping device. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, which still belong to the scope of the present application.

[0017] Figure 1 Schematic diagram of the bundling device in the present application Figure 1 ;

[0018] Figure 2 Schematic diagram of the bundling device in the present application Figure 2 ;

[0019] Figure 3 Partial schematic diagram of the belt path mechanism in the present application

[0020] Figure 4 Schematic diagram of the moving ring and the blocking piece in the present application

[0021] Figure 5 Enlarged view of A in the present application Figure 2

[0022] Figure 6 Partial schematic diagram of the bundling device in the present application

[0023] Figure 7 Schematic diagram of the bundling device in the present application Figure 3 ;

[0024] Figure 8 Schematic diagram of the bundling device in the present application Figure 4 ;

[0025] Figure 9 Partial schematic diagram of the second driving mechanism in the present application

[0026] Figure 10 Schematic diagram of the linkage plate in the present application DETAILED DESCRIPTION

[0027] The following description provides specific application scenarios and requirements of the present specification, so as to enable those skilled in the art to manufacture and use the contents in the present specification. Various local modifications of the disclosed embodiments are obvious to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the present specification. Therefore, the present specification is not limited to the shown embodiments, but to the widest scope consistent with the claims.

[0028] ​In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe this application and its embodiments, and are not intended to limit the indicated devices, elements or components to a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0030] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components.

[0031] For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Regarding the drawings of this application, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0033] Example 1:

[0034] like Figures 1 to 10 As shown, this embodiment provides a stable bundling device, which can be used for bundling products such as hand ropes, and includes a bracket 1. The bracket 1 is mainly used to be assembled with upstream equipment to form an automated packaging production line. A belt path mechanism is provided on the bracket 1, and the belt path mechanism includes a fixed ring 2, a movable ring 3 and a first driving mechanism 4. The fixed ring 2 is provided on the bracket 1, and its inner ring is provided with an annular groove 200 along the circumferential direction. The outer ring of the fixed ring 2 is provided with an opening 201 connected to the annular groove 200. The movable ring 3 is axially slidable along the inner ring of the fixed ring 2. When the movable ring 3 is embedded in the inner ring of the fixed ring 2, its circumferential outer wall and the annular groove 200 form an annular belt path 20. The annular groove 200 includes a through-inlet and a through-outlet, and the opening 201 is between the through-inlet and the through-outlet. With this arrangement, a closed annular belt path 20 is formed by the combination of the fixed ring 2 and the movable ring 3, which completely avoids the risk of the strapping belt escaping from the belt path, thereby greatly improving the stability and reliability of the bundling device.

[0035] In the embodiment of the present disclosure, the moving ring 3 is provided with a first slot 300, and a baffle 5 is detachably connected to the first slot 300. Specifically, one end of the baffle 5 is inserted into the first slot 300 and fixed by a bolt. The fixed ring 2 is provided with a second slot 301 at the opening 201. When the moving ring 3 is embedded into the inner circle of the fixed ring 2, one end of the baffle 5 extends out of the first slot 300 and is inserted into the second slot 301. In this way, the baffle 5 is more stable when moving, and the baffle 5 is convenient to disassemble and assemble.

[0036] It can be understood that, under the driving of the first driving mechanism 4, the moving ring 3 has a passing position for shielding the annular groove 200 and forming an annular belt channel 20 with the annular groove 200, and a pulling position for opening the annular groove 200. The bundling belt passes through the opening 201 along the annular belt channel 20. In addition, when the moving ring 3 is in the pulling position, the baffle 5 shields the corresponding part of the annular groove 200. The moving ring 3 also has a discharging position for moving relative to the fixed ring 2, in which the baffle 5 does not shield the annular groove 200.

[0037] Further, the opening 201 is provided with a guide surface 202 near one side of the starting end of the annular groove 200. The guide surface 202 is a slope or an arc surface, so as to facilitate the bundling belt to smoothly pass into the annular belt channel 20.

[0038] In the embodiment of the present disclosure, the first driving mechanism 4 is used to drive the moving ring 3 to move along the axial direction of the fixed ring 2. Specifically, the fixed ring 2 is provided with a mounting plate 203, and the moving ring 3 is provided with a connecting plate 302. The first driving mechanism 4 includes a driving member 40, a fourth sliding rod 41 and a fourth sliding seat 42. The fourth sliding seat 42 is arranged on the mounting plate 203. The fourth sliding rod 41 is arranged on the fourth sliding seat 42 and slides along the axial direction of the fixed ring 2. One end of the fourth sliding rod 41 is connected with the driving member 40, and the other end is connected with the connecting plate 302. The driving member 40 is generally a pneumatic cylinder or an electric cylinder. In this way, the moving ring 3 is driven to move by the driving member 40, so as to switch between the passing position, the pulling position and the discharging position.

[0039] In the embodiments of the present disclosure, the first placing table 10 is arranged on the fixed ring 2, the second placing table 11 is arranged on the moving ring 3, the second placing table 11 moves synchronously with the moving ring 3, the placing end face of the first placing table 10 and the second placing table 11 are at the same horizontal height, when the moving ring 3 is in the strapping position, the first placing table 10 and the second placing table 11 are close to each other, preferably, the two are in contact to form a platform, when the moving ring 3 is in the unstrapping position, a gap 12 for the strapping belt to pass through is formed between the first placing table 10 and the second placing table 11, so that the first placing table 10 and the second placing table 11 can place products, and do not affect the unstrapping and strapping of the strapping belt.

[0040] In some embodiments, the support 1 is provided with a strapping mechanism 6, which is used for the strapping and unstrapping of the strapping belt. The strapping is that the strapping belt passes through the opening 201 along the annular belt channel 20, and the unstrapping is that the strapping belt is pulled back to strap the product.

[0041] Specifically, the strapping mechanism 6 includes a conveying rod 60, a driver 61, a strapping wheel 62 and a pressure wheel assembly 63. The driver 61 is generally a stepping motor. The conveying rod 60 is provided with a conveying channel, and an installation opening 601 communicating with the conveying channel is arranged on the conveying channel. The strapping wheel 62 is arranged at one end of the installation opening 601, and the pressure wheel assembly 63 is arranged at the other end of the installation opening 601. The strapping wheel 62 is driven to rotate by the driver 61. The pressure wheel assembly 63 includes a pressing wheel 630, a swing rod 631 and a first positioning block 632. One end of the swing rod 631 is hinged to the support 1, and a first spring 64 is arranged between the other end of the swing rod 631 and the first positioning block 632. A first adjusting bolt 65 is threadedly connected to the first positioning block 632. The first spring 64 abuts between the end of the first adjusting bolt 65 and the swing rod 631. The pressing wheel 630 is rotatably arranged on the swing rod 631. The extension amount of the first spring 64 can be adjusted by the first adjusting bolt 65, so that the pressing wheel 630 abuts against the strapping wheel 62, and the strapping and unstrapping are effectively realized. The strapping belt is generally wound on a tray. In this way, different specifications of products can be strapped only by controlling the length of the strapping and the length of the unstrapping by the driver 61.

[0042] The swing rod 631 is provided with a groove portion, and the pressing wheel 630 is rotatably arranged in the groove portion.

[0043] In some embodiments, the support 1 is provided with a pressing and cutting mechanism 7, which comprises a pressing rod 70 and a cutting knife 71. The pressing rod 70 is slidingly arranged on the support 1 towards the opening 201. Specifically, the support 1 is provided with a first sliding seat 72, the first sliding seat 72 is slidingly provided with a first sliding rod 73, one end of the first sliding rod 73 close to the opening 201 is provided with a first connecting block 74, and the first connecting block 74 is connected with the pressing rod 70. One end of the support 1 far away from the opening 201 is provided with a fixed block 75, a second spring 76 is arranged between the fixed block 75 and the first connecting block 74, and the fixed block 75 is threadedly connected with a second adjusting bolt 77. The second spring 76 is abutted between the end of the second adjusting bolt 77 and the first connecting block 74, and the extension amount of the second spring 76 can be adjusted through the second adjusting bolt 77. One end of the pressing rod 70 close to the opening 201 is provided with a perforation 700, and the bundling belt is conveyed along the conveying channel and the perforation 700 to the annular belt channel 20. The cutting knife 71 is arranged on the support 1 and located on one side of the pressing rod 70. When the pressing rod 70 moves backward, the bundling belt in the perforation 700 is cut by the cutting knife 71. Specifically, the cutting edge of the cutting knife 71 is arranged towards the opening 201. When the pressing rod 70 moves backward, the perforation 700 gradually overlaps with the cutting knife 71, so that the bundling belt in the perforation 700 can be cut.

[0044] Preferably, one end of the pressing rod 70 close to the baffle 5 is provided with a continuous arc-shaped protrusion, so as to stably press and fix the bundling belt on the baffle 5.

[0045] It should be understood that the pressing and cutting mechanism 7 can also be divided into a pressing mechanism and a cutting mechanism. The two can be provided with independent driving mechanisms or linked driving mechanisms. As long as the pressing mechanism can press one end of the bundling belt before the belt is pulled out, and the cutting mechanism can cut the bundling belt after the bundling belt is heat-sealed and fixed.

[0046] In some embodiments, the support 1 is provided with a hot head mechanism 8 for hot fixing the bundled band after the banding of the product. The fixing ring 2 is provided with a hot hole 204 in communication with the annular band channel 20 near the opening 201. The hot hole 204 is arranged on the fixing ring 2 near the entrance of the annular groove 200. The hot head mechanism 8 includes a hot gun 80 arranged on the support 1 in the axial direction of the hot hole 204. Specifically, the support 1 is provided with a second sliding seat 81, the second sliding seat 81 is provided with a second sliding rod 82, the second sliding rod 82 is provided with a second connecting block 83, the support 1 is provided with a second positioning block 84, the hot gun 80 is connected to one side of the second connecting block 83, the other side of the second connecting block 83 and the second positioning block 84 are provided with a third spring 85, the second positioning block 84 is provided with a third adjusting bolt 86, the third spring 85 is abutted between the end of the third adjusting bolt 86 and the second connecting block 83, and the third adjusting bolt 86 can adjust the extension amount of the third spring 85.

[0047] Preferably, the pressing rod 70 and the hot gun 80 are located in the orthographic projection of the baffle 5, that is, when the pressing rod 70 moves forward, it will press the bundled band against the baffle 5, and when the hot gun 80 moves forward, it will press the bundled band against the baffle 5 for hot fixing, thus avoiding damage to the fixing ring 2 and the moving ring 3.

[0048] It should be understood that the pressing rod 70 and the hot gun 80 can be driven by independent driving mechanisms, or can be driven by a linkage type driving mechanism. In the embodiments of the present disclosure, the latter is preferred. Specifically, it further includes a second driving mechanism 9. The second driving mechanism 9 includes a driving source 90, a linkage plate 91, a first linkage wheel 92 and a second linkage wheel 93. The linkage plate 91 is arranged on the support 1 in sliding mode. For example, the support 1 is provided with a third sliding seat 94, the third sliding seat 94 is provided with a third sliding rod 95, the linkage plate 91 is connected with the third sliding rod 95, and the driving source 90 is used to drive the linkage plate 91 to move, which can be an electric cylinder or a pneumatic cylinder.

[0049] In the embodiment, the first linkage wheel 92 is rotatably arranged at the end of the first slide rod 73 away from the fixing ring 2, the second linkage wheel 93 is rotatably arranged at the end of the second slide rod 82 away from the fixing ring 2, the linkage plate 91 is provided with the first linkage track 96 for cooperating with the first linkage wheel 92 and the second linkage track 97 for cooperating with the second linkage wheel 93, the first linkage track 96 comprises the first linkage part 961, the second linkage part 962 and the third linkage part 963, the second linkage track 97 comprises the fourth linkage part 971 and the fifth linkage part 972, in the embodiment, each linkage part is an abutting plane, and a transition part 98 is arranged between each adjacent linkage part, the transition part 98 is an inclined plane or an arc surface; under the action of the second spring 76, the first linkage wheel 92 is always in abutting cooperation with the first linkage track 96, under the action of the third spring 85, the second linkage wheel 93 is always in abutting cooperation with the second linkage track 97, under the action of the second spring 76, the pressing rod 70 is reset or maintained at the position where the perforation 700 and the conveying channel are in communication with the annular belt channel 20, under the action of the third spring 85, the iron 80 is located outside the annular belt channel 20.

[0050] In this way, under the driving of the driving source 90, the linkage plate 91 moves so that each linkage part thereon and the corresponding linkage wheel linkage cooperate to enable the pressing rod 70 and the iron 80 to perform corresponding actions. Specifically as follows:

[0051] When the first linkage wheel 92 abuts against the first linkage part 961, the second linkage wheel 93 abuts against the fourth linkage part 971, at this time, the perforation 700 on the pressing rod 70 is in communication with the annular belt channel 20, and the iron 80 is located outside the annular belt channel 20; in this way, the binding belt can be threaded along the conveying channel, the perforation 700 and the annular belt channel 20.

[0052] When the linkage plate 91 moves under the driving of the driving source 90, the first linkage wheel 92 abuts against the second linkage part 962, and the second linkage wheel 93 abuts against the fourth linkage part 971 or the transition part 98 between the fourth linkage part 971 and the fifth linkage part 972, at this time, the pressing rod 70 moves towards the baffle 5 and presses the binding belt against the baffle 5, and the iron 80 is located outside the annular belt channel 20; in this way, the binding belt can be bound on the product under the retraction of the take-up and pay-off belt mechanism 6, and the length of the binding belt can be controlled by the drive 61 to control the length of the binding.

[0053] When the linkage plate 91 continues to move in the same direction under the driving of the driving source 90, the first linkage wheel 92 abuts against the third linkage part 963, and the second linkage wheel 93 abuts against the fifth linkage part 972. At this time, the ironing gun 80 extends into the annular belt channel 20 through the ironing hole 204 to press the bundling belt against the baffle 5 for heat sealing, and the pressing rod 70 moves backward, and the bundling belt in the perforation 700 is cut by the cutting knife 71.

[0054] When the linkage plate 91 moves reversely under the driving of the driving source 90 for resetting, the pressing rod 70 and the ironing gun 80 are reset under the action of the second spring 76 and the third spring 85.

[0055] In summary, after reading the detailed disclosure, those skilled in the art can understand that the foregoing detailed disclosure can be presented only in an exemplary manner and can not be limiting. Although it is not explicitly stated here, those skilled in the art can understand that the present application requires to cover various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0056] In addition, it should be understood that in the foregoing description of the embodiments of the present application, for the purpose of helping to understand one feature, the present application combines various features in a single embodiment, figure or its description for the purpose of simplifying the present application. However, this does not mean that the combination of these features is necessary, and those skilled in the art can certainly mark out part of the device as a separate embodiment when reading the present application. That is, the embodiments in the present application can also be understood as the integration of multiple secondary embodiments. And the content of each secondary embodiment is also valid when there are less than all the features of a single foregoing disclosed embodiment.

[0057] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are only examples and not limitations. Those skilled in the art can take alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. A belt track mechanism of a strapping device, characterized in that: The fixing ring is provided with an annular groove in the inner ring and an opening communicating with the annular groove in the outer ring. The moving ring is axially arranged in the inner ring of the fixing ring. Under the drive of the first driving mechanism, the moving ring moves relative to the fixing ring to a passing position in which the annular groove is shielded and forms an annular band channel, and an extracting position in which the annular groove is opened. The bundling band passes through the opening along the annular band channel.

2. A banding apparatus according to claim 1, wherein, The moving ring is provided with a baffle corresponding to the opening position. When the moving ring is in the extracting position, the baffle shields the corresponding part of the annular groove. The moving ring further has a discharging position in which the baffle does not shield the annular groove.

3. A banding apparatus according to claim 2, wherein the band path mechanism is characterized by: The moving ring is provided with a first slot corresponding to the opening position. The baffle is detachably connected to the first slot. The fixing ring is provided with a second slot at the opening position. When the moving ring is in the passing position, one end of the baffle extends out of the first slot and is inserted into the second slot.

4. The banding apparatus of claim 1, wherein: The moving ring comprises a first annular part and a second annular part. The outer diameter of the first annular part is larger than that of the second annular part. The second annular part is matched with the inner ring of the fixing ring. When the moving ring is in the passing position, the first annular part is embedded in the inner ring of the fixing ring, and the second annular part abuts against the end surface of the fixing ring.

5. The banding apparatus of claim 3, wherein the banding mechanism further comprises a banding mechanism, the banding mechanism comprising a banding wheel and a banding wheel drive, the banding wheel drive configured to rotate the banding wheel about the axis of rotation. The annular groove comprises a passing entrance. The fixing ring is provided with a hot hole communicating with the annular band channel at one end close to the passing entrance.

6. A banding apparatus according to claim 5, wherein the band path mechanism is characterized by: The baffle is located behind the opening and the hot hole. The hot hole and the opening are both located in the orthographic projection area of the baffle.

7. The banding apparatus of claim 1, wherein the banding mechanism further comprises a banding mechanism comprising a banding wheel and a banding wheel drive. The fixing ring is provided with a mounting plate. The moving ring is provided with a connecting plate. The first driving mechanism comprises a driving member, a fourth sliding rod and a fourth sliding seat. The fourth sliding seat is arranged on the mounting plate. The fourth sliding rod is arranged on the fourth sliding seat in the axial direction of the fixing ring. One end of the fourth sliding rod is connected with the driving member, and the other end is connected with the connecting plate.

8. The banding apparatus of claim 1, wherein: The fixing ring is provided with a first placement table. The moving ring is provided with a second placement table. The second placement table moves synchronously with the moving ring. The placement end surfaces of the first placement table and the second placement table are at the same horizontal height. When the moving ring is in the passing position, the first placement table and the second placement table are close to each other. When the moving ring is in the extracting position, a gap is formed between the first placement table and the second placement table for the bundling band to pass through.

9. The banding apparatus of claim 1, wherein, The opening is provided with a guide surface on one side close to the starting end of the annular groove.

10. A bundling apparatus comprising a band path mechanism of the bundling apparatus as claimed in any one of claims 1 to 9, characterized in that, The fixing ring is arranged on a support. The support is provided with a winding and unwinding mechanism, a pressing mechanism, a hot head mechanism and a cutting mechanism. The winding and unwinding mechanism is used for the passing and extracting of the bundling band. The pressing mechanism is used for pressing one end of the bundling band before the bundling band is extracted. The hot head mechanism is used for heat sealing and fixing the bundling band after the bundling band is extracted. The cutting mechanism is used for cutting the bundling band.

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