A strapping machine with a linkage switch

Abstract

A strapping machine with a linkage switch comprises a casing, a wire feeding mechanism, a wire twisting mechanism, a coiling plate and a wire reel bin arranged on the casing; the wire feeding mechanism comprises a fixed frame, a toggle lever, a first gear and a second gear; the middle portion of the toggle lever is rotatably connected to the fixed frame; the two ends of the toggle lever are a trigger end and a connecting end respectively; the second gear is arranged at the connecting end; the trigger end is provided with an elastic member, and the elastic member is used to make the second gear close to the first gear; the wire reel bin comprises a wire reel groove and a bin cover; a slidable push plate is also provided on the casing, a locking end is provided at one end of the push plate, and a pressing end is provided at the other end of the push plate; when the push plate slides upward, the locking end is unlocked and matched with the bin cover, and the pressing end is pressed against the trigger end; when the push plate slides downward, the locking end is locked and matched with the bin cover, the pressing end is released from the pressing match with the trigger end, and the toggle lever is reset. The above strapping machine can prevent the push plate from returning to its initial position after the bin cover is opened, thereby causing the first gear and the second gear to be in a clamped state.

Description

Technical Field

[0001] The present invention relates to the technical field of strapping machines, and particularly relates to a strapping machine with a linkage switch. Background Art

[0002] Most of the main structures of existing strapping machines include a machine shell, a wire feeding mechanism, a wire guiding structure, a wire cutting mechanism, and a wire twisting mechanism. Among them, the wire feeding mechanism guides the iron wire on the wire spool to the wire guiding mechanism, and the wire guiding mechanism limits and guides the iron wire so that the iron wire is wound around the outside of the steel bar in a circular shape. After the iron wire is wound, the wire cutting mechanism cuts off the iron wire, and then the wire twisting mechanism twists the iron wire wound around the outside of the steel bar so that the steel bar can be tightly strapped by the iron wire.

[0003] Generally, a wire spool bin for accommodating a wire spool is provided inside the machine shell of the strapping machine, and a bin cover facilitating the replacement of the wire spool is provided at the opening of the wire spool bin. When replacing the wire spool, it is usually necessary to open the bin cover and unlock the wire feeding mechanism at the same time. For example, in the international publication "WO2021070481A1", it discloses a steel bar strapping machine. As Figure 1 shown, the strapping machine has a wire spool bin for accommodating a wire spool and a bin cover 224. The wire spool bin has an opening, and the bin cover covers the opening so as to be able to open or close the opening. During use, by rotating the rod portion 286, the bin cover 224 can be opened; during the process of rotating the rod portion 286, the cam portion 290 also rotates together. The right surface 296b of the edge portion 296 of the cam portion 290 acts on the connecting portion 278 to make it rotate, and further separates the driven roller from the driving roller. In addition, from the disclosed technology thereof, the overall structure of the rod portion 286 and the cam portion 290 is fixed to the machine shell by screws; the right surface 296b of the edge portion 296 is an arc surface, and the cam portion 290 has a gradually changing thickness in the direction of the rotation axis RX1. The above-mentioned strapping machine has poor use stability and is inconvenient to use. Specifically, because the right surface 296b of the edge portion 296 is an arc surface, after the bin cover is opened, if the user does not continuously press the rod portion 286, the overall structure of the rod portion 286 and the cam portion 290 will rotate along the arc surface to the initial position, even if the bin cover has been opened at this time, the driving roller and the driven roller will also be in a clamped state. Summary of the Invention

[0004] To solve the problems of poor use stability and inconvenience of the existing strapping machine in the background art, the present invention provides a strapping machine with a linkage switch. During use, after the bin cover is opened, the trigger end can continuously press against the toggle lever to release the clamping state between the first gear and the second gear, which avoids the toggle lever returning to the initial position after the bin cover is opened, resulting in the first gear and the second gear being in a clamped state, making it more convenient to replace the wire spool and facilitating the use of the user.

[0005] To achieve the above object, the technical solution of the strapping machine with a linkage switch of the present invention is as follows.

[0006] A strapping machine with a linkage switch, comprising a machine shell, a wire feeding mechanism, a wire twisting mechanism, a forming plate and a wire reel bin arranged on the machine shell;

[0007] The wire feeding mechanism includes a fixing frame, a shifting rod rotatably arranged on the fixing frame, a first gear arranged on the fixing frame, and a second gear arranged on the shifting rod;

[0008] The middle part of the shifting rod is rotatably connected to the fixing frame. The two ends of the shifting rod are respectively a triggering end and a connecting end, and the second gear is arranged at the connecting end; an elastic member is arranged at the triggering end, and the elastic member acts on the triggering end to make the second gear approach the first gear and mesh with the first gear;

[0009] The wire reel bin includes a wire reel groove arranged on the machine shell and a bin cover movably arranged on the wire reel groove;

[0010] A slidable sliding plate is further arranged on the machine shell. One end of the sliding plate is provided with a locking end, and the other end of the sliding plate is provided with a pressing end; when the sliding plate slides upward, the locking end is in unlocking cooperation with the bin cover, and the pressing end is in pressing cooperation with the triggering end, and the shifting rod rotates to make the second gear away from the first gear; when the sliding plate slides downward, the locking end is in locking cooperation with the bin cover, and the pressing end is in releasing the pressing cooperation with the triggering end, and the shifting rod resets under the action of the elastic member to make the second gear mesh with the first gear.

[0011] Further, the elastic member is located on one side of the triggering end, and the sliding plate is in pressing cooperation with the other side of the triggering end.

[0012] Further, the sliding plate includes an operating plate and a locking plate connected together. The operating plate is located outside the machine shell, and the locking plate is located inside the machine shell;

[0013] One end of the locking plate is the locking end, and the other end of the locking plate is the pressing end.

[0014] Further, one end of the bin cover is hinged to the machine shell, and the other end of the bin cover is in locking cooperation with the sliding plate.

[0015] Further, a locking groove is arranged on the bin cover, and the locking groove is in locking cooperation with the locking end.

[0016] Further, an inclined transition part is formed between the middle part of the shifting rod and the triggering end.

[0017] Further, a sliding groove is arranged on the machine shell. The operating plate and the locking plate are connected through a connecting block, and the connecting block is slidably located in the sliding groove.

[0018] Further, the connecting block is arranged on the operating plate. One end of the connecting block is connected to the operating plate, and the other end of the connecting block is inserted into the sliding groove and connected to the locking plate.

[0019] Furthermore, a pull portion is provided on the sliding plate.

[0020] Furthermore, a notch reinforcement plate is provided on the inner side and / or the outer side of the housing, and an adapting groove is provided on the notch reinforcement plate, and the adapting groove is opposite to the sliding groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: during the use of the bundling machine of the present invention, when the bin cover is not opened, the locking end is locked with the bin cover, the bin cover is in a locked state, and the first gear and the second gear are in a clamped state under the action of the elastic member. When it is necessary to open the bin cover, the sliding push plate is slid, and the locking end of the sliding push plate releases the lock on the bin cover, and the bin cover can be opened. At the same time, during the sliding process of the sliding push plate, the pressing end presses against the trigger end of the toggle lever, and the toggle lever rotates to drive the second gear away from the first gear to release the clamped state between the first gear and the second gear. The above sliding push plate can release the clamped state between the first gear and the second gear at the same time as it slides to unlock the bin cover. When replacing the wire reel, the wire head can be easily taken out from between the first gear and the second gear, or the wire head can be easily passed through between the first gear and the second gear. There is no need to operate the trigger end separately to release the structure of the clamped state between the first gear and the second gear. The operation is simpler and convenient for the user to control, which helps to further shorten the time for replacing the wire reel and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the wire reel bin, bin cover, and wire feeding mechanism of the prior art "WO2021070481A1";

[0023] Figure 2 An exploded perspective view of a strapping machine;

[0024] Figure 3 This is a structural diagram with the compartment cover open;

[0025] Figure 4 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0026] Figure 5 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 6 A perspective view of the push-slide plate, the toggle lever, and the elastic member;

[0028] Figure 7 A perspective view of the toggle lever;

[0029] Figure 8 A perspective view of the toggle lever in another direction;

[0030] Figure 9 This is a perspective view of the bin cover;

[0031] Housing 1; wire spool bin 11; wire spool groove 111; bin cover 112; locking groove 1121; sliding groove 12; through hole 13;

[0032] Wire feeding mechanism 2; fixing bracket 21; toggle lever 22; trigger end 221; limit groove 2211; connecting end 222; inclined transition part 223; first gear 23; second gear 24;

[0033] Coiling plate 3;

[0034] Wire twisting mechanism 4;

[0035] Wire spool 5;

[0036] Elastic member 6;

[0037] Sliding push plate 7; operating plate 71; locking plate 72; locking end 721; pressing end 722; connecting block 73; lever part 74. Detailed implementation mode

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0041] The following combines the attached Figure 2-9 The technical solution of the present invention will be further described.

[0042] A bundling machine with a linkage switch, such as Figure 2-4As shown in the figure, it includes a casing 1 and a wire feeding mechanism 2, a wire forming plate 3, a wire cutting mechanism (not shown), and a wire twisting mechanism 4 disposed within the casing 1. The wire feeding mechanism 2 is used to guide the iron wire to the wire forming plate 3. The wire forming plate 3 guides the iron wire into a coiled shape and thus winds it around the steel bar. After the iron wire is guided for several turns, the wire cutting mechanism cuts the iron wire, and the wire twisting mechanism 4 tightens the iron wire to tie a knot. When in use, a silk thread reel 5 is loaded into the bundling machine, and the bundling machine can start working. It should be noted that the structures and connection relationships among the various mechanisms of the above bundling machine are common technologies in this field and will not be elaborated here.

[0043] See Figure 2-4, inside the housing 1, there is a spool bin 11. The spool bin 11 includes a spool groove 111 with an opening and a bin cover 112 movably arranged on the spool groove 111. When it is necessary to replace the wire spool 5, open the bin cover 112, and close the bin cover 112 after replacing the wire spool 5. The wire feeding mechanism 2 includes a fixed frame 21, a toggle rod 22, a first gear 23 arranged on the fixed frame 21, and a second gear 24 arranged on the toggle rod 22; the middle of the toggle rod 22 is rotatably connected to the fixed frame 21. The two ends of the toggle rod 22 are respectively a trigger end 221 and a connection end 222. The second gear 24 is arranged at the connection end 222, and an elastic member 6 is arranged at the trigger end 221. The elastic member 6 can preferably be a spring. The elastic member 6 acts on the trigger end 221 to make the second gear 24 approach the first gear 23 and mesh with the first gear 23. There is also a slidable sliding plate 7 arranged on the housing 1. When the sliding plate 7 slides, it is in locking cooperation with the bin cover 112, and when the sliding plate 7 slides, it is also in pressing cooperation with the trigger end 221, so that the toggle rod 22 rotates, and thus the second gear 24 approaches or moves away from the first gear 23. During use, when the bin cover 112 is locked on the spool groove 111, at this time, the sliding plate 7 is in locking cooperation with the bin cover 112, and the bin cover 112 cannot be opened. At the same time, under the action of the elastic member 6, the trigger end 221 of the toggle rod 22 abuts against the sliding plate 7 and the second gear 24 meshes with the first gear 23 to clamp the iron wire. When it is necessary to open the bin cover 112, slide the sliding plate 7 until the locking state between the sliding plate 7 and the bin cover 112 is released, and the bin cover 112 can be opened. During the sliding process of the sliding plate 7, the sliding plate 7 slides and presses against the trigger end 221 of the toggle rod 22 (at this time, the elastic member 6 is compressed), and the toggle rod 22 is driven by the sliding plate 7 to rotate, so that the second gear 24 moves away from the first gear 23 and releases the clamping of the iron wire. Similarly, when it is necessary to cover the bin cover 112 on the spool groove 111, the sliding plate 7 slides in the reverse direction to lock the bin cover 112, and the toggle rod 22 rotates in the reverse direction under the action of the elastic member 6 to return to the initial position so that the second gear 24 meshes with the first gear 23. The above sliding of the sliding plate 7 can unlock the bin cover 112 and at the same time release the clamping state between the first gear 23 and the second gear 24. When replacing the wire spool 5, the iron wire head can be easily taken out between the first gear 23 and the second gear 24, or the iron wire head can easily pass through between the first gear 23 and the second gear 24, without the need to separately operate the trigger end 221 to release the clamping state between the first gear 23 and the second gear 24. The operation is simpler and more convenient for the user to control, which is beneficial to further shorten the time for replacing the wire spool and improve work efficiency.

[0044] For the above toggle rod 22, see Figure 6-7, the position of the toggle lever 22 is opposite to the conveying direction of the wire, and is inclined from one side of the first gear 23 to one side of the sliding plate 7. The bottom of the toggle lever 22 is the connecting end 222, and the top of the toggle lever 22 is the triggering end 221. The sliding plate 7 is arranged in the vertical direction. The bottom of the sliding plate 7 is locked and matched with the bin cover 112, and the top of the sliding plate 7 is pressed and matched with the triggering end 221.

[0045] As a preferred implementation, see Figure 6 , the elastic member 6 and the sliding plate 7 are respectively located on both sides of the triggering end 221. One end of the elastic member 6 abuts against the machine housing 1, and the other end of the elastic member 6 abuts against the triggering end 221. When the sliding plate 7 slides upward to press against the triggering end 221 to unlock the bin cover 112, the toggle lever 22 rotates to move the second gear 24 away from the first gear 23. During the rotation of the toggle lever 22, the elastic member 6 is compressed; during the process of the sliding plate 7 and the triggering end 221 pressing against each other, under the elastic force of the elastic member 6, the triggering end 221 presses against the sliding plate 7, so as to increase the frictional force between the sliding plate 7 and the triggering end 221 and the machine housing 1. Without the user applying a force to the sliding plate 7, the sliding plate 7 will not fall off. This avoids the sliding plate 7 falling to the initial position after the bin cover 112 is opened, resulting in the first gear 23 and the second gear 24 being in a clamped state. In addition, this makes it easier to replace the wire spool 5 and is convenient for the user to use. When the sliding plate 7 slides downward to lock the bin cover 112, the elastic member 6 drives the toggle lever 22 to rotate in the reverse direction. The above elastic member 6 and the sliding plate 7 are arranged on both sides of the triggering end 221, and the structure is compact. To ensure that the elastic member 6 can be stably connected to the triggering end 221, see Figure 8 , a limiting groove 2211 is provided on the side of the triggering end 221 away from the sliding plate 7. One end of the elastic member 6 is clamped in the limiting groove 2211, and the other end is connected to the inner side surface of the machine housing 1, so as to ensure the connection stability of the elastic member 6.

[0046] As an improved solution, see Figure 4-6, a chute 12 is provided on the casing 1, and a through hole 13 communicating with the wire spool bin 11 is provided at the bottom of the chute 12. The sliding push plate 7 includes an operating plate 71, a locking plate 72 and a connecting block 73. The operating plate 71 is located outside the casing 1, and the length thereof in the up and down direction is less than the length of the chute 12 so that it can slide up and down in the chute 12. The locking plate 72 is located inside the casing 1, and the connecting block 73 is provided on the operating plate 71. During assembly, the connecting block 73 passes through the through hole 13 at the bottom of the chute 12 and is connected to the locking plate 72, thereby connecting the operating plate 71 and the locking plate 72 to the casing 1. The connection manner between the connecting block 73 and the locking plate 72 can be an existing bolt connection or the like, which will not be elaborated herein. The bottom end of the locking plate 72 is a locking end 721 for locking and cooperating with the bin cover 112 when the sliding push plate 7 slides downward, and the top end of the locking plate 72 is a pressing end 722 for pressing and cooperating with the triggering end 221 when the sliding push plate 7 slides upward. When the sliding push plate 7 moves downward to the bottom, the locking end 721 of the sliding push plate 7 locks and cooperates with the bin cover 112, thereby locking the bin cover 112. At this time, the pressing end 722 presses against the inclined transition portion 223 of the toggle lever 22, and the first gear 23 and the second gear 24 are in a clamped state. When the sliding push plate 7 moves upward to the top, the locking end 721 of the sliding push plate 7 releases the locking of the bin cover 112, and the bin cover 112 can be opened. At the same time, the pressing end 722 of the sliding push plate 7 slides along the inclined transition portion 223 of the toggle lever 22 to the triggering end 221, thereby pressing the triggering end 221 to rotate the toggle lever 22, and the second gear 24 rotates away from the first gear 23. The above structure effectively solves the disadvantages of the prior art in the background art, specifically manifested as follows: In the existing technical solution of the background art, since the driving roller and the driven roller need to clamp the iron wire with a relatively large clamping force during the working state, when the bin cover 112 needs to be opened and the wire feeding mechanism 2 needs to be unlocked, a relatively large force needs to be used to overcome the clamping force. Since the overall mechanism of the rotating rod portion and the cam portion is fixed to the casing 1 by screws, therefore, the force for overcoming the clamping force acts on the connection position of the screws, which is prone to stress concentration and thus causes the breakdown of this position. In the above implementation manner of this embodiment, the sliding push plate 7 and the casing 1 are in surface contact, which increases the contact area between the sliding push plate 7 and the casing 1, making it not easy for the connection position to be damaged. As a further improvement, a notch reinforcing plate is provided on the inner side or the outer side or both sides of the casing 1, and an adaptor slot is provided on the notch reinforcing plate. The adaptor slot is opposite to the chute 12 so that the connecting block 73 can connect the operating plate 71 and the locking plate 72. The setting of the notch reinforcing plate strengthens the strength of the casing 1 where the sliding push plate 7 is provided, and effectively alleviates the breakdown of this position due to the application of a relatively large force.

[0047] For the above-mentioned sliding plate and toggle lever, the ratio of the distance from the locking end to the pressing end to the distance from the trigger end to the locking part of the compartment cover is 1:1.25 to 1:5.88. Within this distance ratio, when the sliding plate slides upward, the locking end releases the lock on the compartment cover and the compartment cover opens. Then, it continues to slide upward a little distance. Combined with the force of an average person pushing the sliding plate, it takes about 0.1 second for the pressing end to be pressed into place with the trigger end. That is, the time point when the pressing end and the trigger end are pressed into place is after the compartment cover is opened, but the operator will not feel any delay. This avoids the situation where the difference between the distance from the locking end to the pressing end and the distance from the trigger end to the locking portion of the lid is too large, causing the pressing end to need to continue sliding for a distance after opening the lid, for example, 0.7-1 seconds, for the pressing end to press into place with the trigger end. This is because most people will stop applying force to the sliding plate after the lid is opened, resulting in the pressing end and the trigger end not being pressed into place before the operation stops, causing the first gear and the second gear to not be separated, requiring a second operation of the sliding plate. During operation, the sliding plate may even jump downward under the action of the elastic member, posing a safety hazard to the operator. This also avoids the situation where the difference between the distance from the locking end to the pressing end and the distance from the trigger end to the locking portion of the lid is too small, such as when the two are close to equal, resulting in the pressing end having pressed into place with the trigger end but the locking end still not completely releasing the limit on the lid, resulting in the lid being unlocked poorly or stuck.

[0048] As an improvement, see Figure 9 One end of the compartment cover 112 is hinged to the housing 1, and the other end of the compartment cover 112, that is, the position of the compartment cover 112 opposite to the locking end 721, is provided with a locking groove 1121. When the sliding plate 7 moves upward, the locking end 721 of the locking plate 72 disengages the locking groove 1121, and the compartment cover 112 can be rotated to open. See the schematic diagram of the open state for details. Figure 3 When the sliding plate 7 moves downward, the locking end 721 of the locking plate 72 is inserted into the locking groove 1121, thereby locking the compartment cover 112 on the housing 1. The locking structure between the sliding plate 7 and the compartment cover 112 is simple and easy to manufacture and assemble.

[0049] As an improved solution, the length of the locking plate 72 is equal to or approximately equal to the distance between the bottom of the locking slot 1121 and the bottom of the trigger end 221. Thus, when the compartment cover 112 is locked, the top of the locking plate 72 is pressed against the trigger end 221. Even if the strapping machine is held upside down, with the bottom facing the top, the locking plate 72 will not be unlocked by gravity, effectively preventing the compartment cover 112 from accidentally opening. Furthermore, to facilitate the user's sliding of the push plate 7, a triggering portion 74 is provided on the push plate 7. This allows the user to directly push the triggering portion 74 to slide the push plate 7, making it convenient to use.

[0050] As a preferred embodiment, see Figure 6-8, an inclined transition portion 223 is formed between the middle of the toggle lever 22 and the trigger end 221. When the magazine cover 112 is locked, the locking plate 72 is located beside the inclined transition portion 223 and below the trigger end 221. When the magazine cover 112 is opened, the locking plate 72 is located beside the trigger end 221. By providing the inclined transition portion, during the opening process of the magazine cover 112, the pressing end 722 of the locking plate 72 can slowly slide along the inclined transition portion 223 to press the toggle lever 22 until the trigger end 221, thereby reducing the force required to operate the sliding plate 7. During the locking process of the magazine cover 112, after gently pushing down the sliding plate 7, the inclined transition portion 223 can squeeze the pressing end 722 under the action of the elastic member 6, so that the locking end 721 moves in the locking direction until the locking end 721 is in locking cooperation with the magazine cover 112. The potential energy of the elastic member 6 during reset is converted into the kinetic energy for pushing the locking plate 72 to move, improving the locking efficiency of the magazine cover 112 and reducing human misoperation. The above structure is simple, delicate and convenient to operate. The unlocking of the magazine cover 112 and the separation of the two gears in the wire feeding mechanism 2 can be completed simultaneously by sliding the sliding plate. Compared with the prior art, the two actions that originally required manual operation are combined into one, simplifying the operation process and avoiding the risks of equipment damage and personal injury caused by misoperation.

[0051] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

[0052] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A strapping machine with a linkage switch, comprising a machine housing, a wire feeding mechanism, a wire twisting mechanism, a forming plate and a wire spool bin provided on the machine housing; The wire feeding mechanism includes a fixed frame, a toggle rod rotatably provided on the fixed frame, a first gear provided on the fixed frame, and a second gear provided on the toggle rod; The middle of the toggle rod is rotatably connected to the fixed frame. The two ends of the toggle rod are respectively a trigger end and a connection end, and the second gear is provided at the connection end; an elastic member is provided at the trigger end, and the elastic member acts on the trigger end to make the second gear approach the first gear and mesh with the first gear; The wire spool bin includes a wire spool groove provided on the machine housing and a bin cover movably provided on the wire spool groove; It is characterized in that: A slidable sliding plate is further provided on the machine housing. One end of the sliding plate is provided with a locking end, and the other end of the sliding plate is provided with a pressing end; when the sliding plate slides upward, the locking end is unlocked and cooperated with the bin cover, and the pressing end is in pressing cooperation with the trigger end, and the toggle rod rotates to make the second gear away from the first gear; when the sliding plate slides downward, the locking end is locked and cooperated with the bin cover, and the pressing end is disengaged from the pressing cooperation with the trigger end, and the toggle rod resets under the action of the elastic member to make the second gear mesh with the first gear; The ratio of the distance from the locking end to the pressing end to the distance from the trigger end to the locking part of the bin cover is 1:1.25 to 1:5.

88.

2. The strapping machine according to claim 1, characterized in that: The elastic member is located on one side of the trigger end, and the sliding plate is in pressing cooperation with the other side of the trigger end.

3. The strapping machine according to claim 1, wherein: The sliding plate includes an operating plate and a locking plate connected together. The operating plate is located outside the machine housing, and the locking plate is located inside the machine housing; One end of the locking plate is the locking end, and the other end of the locking plate is the pressing end.

4. The strapping machine according to claim 1, characterized in that: One end of the bin cover is hinged to the machine housing, and the other end of the bin cover is locked and cooperated with the sliding plate.

5. The strapping machine according to claim 1, characterized in that: A locking groove is provided on the bin cover, and the locking groove is locked and cooperated with the locking end.

6. The strapping machine according to claim 1, characterized in that: An inclined transition portion is formed between the middle of the toggle rod and the trigger end.

7. The strapping machine according to claim 3, wherein: A chute is provided on the machine housing. The operating plate and the locking plate are connected by a connecting block, and the connecting block is slidably located in the chute.

8. The strapping machine according to claim 7, characterized in that: The connecting block is provided on the operating plate. One end of the connecting block is connected to the operating plate, and the other end of the connecting block is inserted into the chute and connected to the locking plate.

9. The strapping machine according to claim 1, characterized in that: A pulling portion is provided on the sliding plate.

10. The strapping machine according to claim 7, wherein: A notch reinforcing plate is provided on the inner and / or outer side of the machine housing. An adaptor slot is provided on the notch reinforcing plate, and the adaptor slot is opposite to the chute.

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