Pipe cutting device of automatic binding machine

Abstract

The utility model provides an automatic binding machine pipe cutting device which comprises a pipe support, a cutter mechanism and a pipe cutting fixing frame, the pipe support and the pipe cutting fixing frame are relatively fixed, a discharging hole is formed in the pipe support, a pipe connecting hole is formed in the position, corresponding to the discharging hole, of the pipe cutting fixing frame, and a pipe connecting mechanism is arranged below the pipe cutting fixing frame. The cutter mechanism is arranged between the pipe support and the pipe cutting fixing frame and used for nylon riveting pipes. Due to the fact that the cutter mechanism is arranged between the pipe support and the pipe cutting fixing frame, when the length of the remaining tail pipe of the nylon rivet pipe is smaller than the distance between the pipe support and the pipe cutting fixing frame, the tail pipe can fall off naturally, the possibility of pipe clamping is reduced, and the nylon rivet pipe cutting device is simple, practical and easy to assemble.

Description

Technical Field

[0001] The present application relates to the technical field of binding machines, and in particular to a tube cutting device for an automatic binding machine. Background Art

[0002] The tube cutting devices of the automatic binding machines sold on the market all cut the tubes from the front of the machine. However, the tube cutting devices of traditional automatic binding machines are too complicated and use too many parts. The parts processing is complicated, and the remaining tail tube of the nylon rivet tube will cause the tube to get stuck, making it impossible to complete the tube cutting action.

[0003] At present, the conventional pipe cutting device is composed of a pipe cutting blade, a tension spring, a bearing, a pipe cutting pressure plate, a pipe cutting shaft, a pipe measuring shaft, a pipe cutting fixed square shaft, a guide cylinder, a guide cylinder fixing frame, a pipe cutting fixed frame and a pipe cutting sliding frame. However, the structure of the pipe cutting device is too complicated, and the remaining tail pipe cannot be removed in time, resulting in the tail pipe falling into the gap between the pipe cutting blade and the pipe cutting fixed frame, causing the pipe to be stuck, and the automatic binding machine cannot complete the pipe cutting action. Utility Model Content

[0004] In view of the shortcomings of the existing methods, the present application proposes an automatic binding machine tube cutting device to solve the technical problem that the remaining tail tube of the nylon rivet tube of the existing binding machine will fall between the gap between the tube cutting blade and the tube cutting fixing frame, causing the tube to be stuck, resulting in the inability to complete the tube cutting action.

[0005] The embodiment of the present application provides a tube cutting device for an automatic binding machine, which includes a tube support, a cutting knife mechanism and a tube cutting fixing frame, wherein the tube support is relatively fixed to the tube cutting fixing frame, the tube support is provided with a feeding hole for the nylon rivet tube to be processed to pass through, the tube cutting fixing frame is coaxially arranged with a connecting pipe hole corresponding to the position of the feeding hole, and a connecting pipe mechanism for receiving the end of the nylon rivet tube is provided below the tube cutting fixing frame, the cutting knife mechanism is arranged between the tube support and the tube cutting fixing frame for cutting the nylon rivet tube passing through the feeding hole and the connecting pipe hole, the cutting knife mechanism includes a cutting knife fixing plate, a tube cutting blade, an elastic member and a stopper, the tube cutting blade is mounted on the cutting knife fixing plate, the stopper is fixed on the tube cutting fixing frame, the elastic member is arranged between the tube cutting blade and the stopper, and the end of the cutting knife fixing plate facing away from the switching blade is provided with a driving member for pushing the cutting knife fixing plate to make the tube cutting blade close to the feeding hole and the connecting pipe hole.

[0006] It is further provided that: the driving member comprises a top block moving in a vertical direction to push the cutter fixing plate, the top block comprises a first section block, a second section block and a third section block connected in a vertical direction, the width of the third section block is greater than the width of the first section block, and the surface of the second section block is obliquely connected between the first section block and the second section block;

[0007] When the first section block abuts against the cutter fixing plate, the tube cutting blade is away from the feed hole and the connecting pipe hole; when the cutter fixing plate moves relatively along the surface of the second section block, the tube cutting blade moves toward the feed hole and the connecting pipe hole; when the cutter fixing plate abuts against the first section block, the tube cutting blade completely separates the feed hole and the connecting pipe hole.

[0008] It is further provided that: a roller is provided at the end of the cutter fixed against the top block.

[0009] It is further provided that: a limiting groove for limiting the top block to move only in the vertical direction is provided on the pipe cutting fixing frame.

[0010] It is further provided that the connecting pipe mechanism comprises a connecting pipe block and a connecting pipe shaft, the connecting pipe block is located directly below the connecting pipe hole opened in the pipe cutting fixing frame, and the connecting pipe shaft is connected to the connecting pipe block to adjust the distance from the connecting pipe block to the pipe cutting fixing frame.

[0011] It is further provided that: the pipe cutting fixing frame is provided with a through hole for the pipe connecting shaft to pass through.

[0012] Further configuration: a pulling rope for adjusting the height of the connecting shaft is provided at the top end of the connecting shaft.

[0013] It is further provided that: the tube support is provided with a positioning tube extending axially along the feeding hole at its feeding hole, and the inner diameter of the positioning tube is matched with the outer diameter of the nylon riveted tube to be processed.

[0014] It is further provided that the elastic member of the cutting mechanism comprises cylindrical compression springs respectively located on both sides of the tube cutting blade.

[0015] Further configuration: a tube missing detection mechanism is provided between the tube support and the tube cutting fixing frame.

[0016] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include:

[0017] In the automatic binding machine tube cutting device of the present application, a driving member is provided to complete the tube cutting operation of the nylon riveted tube, and the structure is simple. Moreover, since the cutting knife mechanism is provided between the tube support and the tube cutting fixing frame, when the remaining tail tube length of the nylon riveted tube is less than the spacing between the tube support and the tube cutting fixing frame, when the next tube cutting operation is performed, the tube cutting blade opens the tube hole under the elastic recovery force of the elastic member, and the tail tube will fall naturally, reducing the possibility of tube jamming. The device is simple, practical, and easy to assemble.

[0018] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A schematic diagram of the structure of a pipe cutting device for an automatic binding machine provided in an embodiment of the present application, with the pipe hole of the pipe cutting device opened;

[0021] Figure 2 A schematic diagram of the structure of a pipe cutting device for an automatic binding machine provided in an embodiment of the present application, with the pipe hole of the pipe cutting device being in a closed state;

[0022] Figure 3 This is an exploded view of the structure of a tube cutting device for an automatic binding machine provided in an embodiment of the present application.

[0023] In the figure, 1. pipe bracket; 11. feeding hole; 12. positioning pipe; 2. cutting knife mechanism; 21. cutting knife fixing plate; 22. pipe cutting blade; 23. elastic member; 24. stopper; 25. roller; 26. top block; 261. first section block; 262. second section block; 263. third section block; 3. pipe cutting fixing frame; 31. pipe connecting hole; 32. limiting groove; 33. perforation; 4. pipe connecting mechanism; 41. pipe connecting block; 42. pipe connecting shaft; 43. pulling rope; 5. pipe missing detection mechanism. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0025] Those skilled in the art will appreciate that, unless specifically stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, steps, operations, elements and / or components, but does not exclude the implementation of other features, steps, operations, elements, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1 and Figure 3The present application discloses a tube cutting device for an automatic binding machine, which includes a tube support 1, a cutting knife mechanism 2 and a tube cutting fixing frame 3. The tube support 1 is fixed on the top of the tube cutting fixing frame 3 by a thumb screw. A feeding hole 11 is provided on the tube support 1 for the nylon rivet tube to be processed to pass through. The tube cutting fixing frame 3 is coaxially provided with a connecting pipe hole 31 corresponding to the position of the feeding hole 11. The cutting knife mechanism 2 is arranged between the tube support 1 and the tube cutting fixing frame 3 to cut the nylon rivet tube passing through the feeding hole 11 and the connecting pipe hole 31. After the nylon rivet tube is cut, its tail tube will automatically fall when it cannot pass through the feeding hole 11 and the connecting pipe hole 31, which can prevent the tail tube from falling between the gap between the tube cutting blade 22 and the tube cutting fixing frame 3, so as to effectively solve the problem that the tube cutting device of the binding machine is prone to tube jamming. The structure is simple and the reliability of tube cutting is improved.

[0028] It is known that the cutting mechanism 2 of the present application is located between the pipe support 1 and the pipe cutting fixing frame 3. In this embodiment, the distance between the bottom surface of the pipe support 1 and the top surface of the pipe cutting fixing frame 3 is greater than 12 mm. When the tail pipe length of the nylon riveted tube is less than 12 mm, the tail pipe will naturally fall from between the pipe support 1 and the pipe cutting fixing frame 3, thereby avoiding the situation of pipe jamming.

[0029] Specifically, the cutter mechanism 2 includes a cutter fixing plate 21, a pipe cutting blade 22, an elastic member 23 and a block 24. The pipe cutting blade 22 is installed on the cutter fixing plate 21, the block 24 is fixed on the pipe cutting fixing frame 3, the elastic member 23 is connected between the pipe cutting blade 22 and the block 24, and the feed hole 11 of the pipe support 1 and the connecting pipe hole 31 of the pipe cutting fixing frame 3 are located between the cutter fixing plate 21 and the block 24. When the elastic member 23 is in a natural state, the cutter fixing plate 21 and the tube cutting blade 22 are away from the stopper 24, and the space between the feed hole 11 and the connecting pipe hole 31 is completely exposed, so that the nylon rivet tube to be processed can pass through the feed hole 11 and the connecting pipe hole 31; when the elastic member 23 is in a compressed state, the cutter fixing plate 21 and the tube cutting blade 22 move toward the direction of the stopper 24, and the tube cutting blade 22 can cut the nylon rivet tube passing through the feed hole 11 and the connecting pipe hole 31, and can cover and separate the feed hole 11 and the connecting pipe hole 31, and at the same time block the uncut nylon rivet tube from entering the connecting pipe hole 31, and the cut nylon rivet tube falls through the connecting pipe hole 31, thereby avoiding the situation of tube jamming.

[0030] The end of the cutter fixing plate 21 facing away from the tube cutting blade 22 is provided with a driving member for pushing the cutter fixing plate 21 to make the tube cutting blade 22 close to the feeding hole 11 and the pipe connecting hole 31. The driving member cooperates with the elastic member 23 to realize the reciprocating movement of the cutter fixing plate 21 and the tube cutting blade 22, thereby completing the tube cutting operation of the binding machine. The driving member includes a top block 26 moving in the vertical direction, and the top block 26 includes a first section block 261, a second section block 262 and a third section block 263 connected in the vertical direction. The width of the third section block 263 is greater than the width of the first section block 261. The second section block 262 is connected between the first section block 261 and the third section block 263. The second section block 262 is provided with an inclined connection surface. The first section block 261 and the third section block 263 are arranged flush with one side surface along the width direction, and the first section block 261 and the third section block 263 are connected to the opposite side surface of the flush side surface through the inclined connection surface of the second section block 262.

[0031] When the cutter fixing plate 21 abuts against the first section block 261, the tube cutting blade 22 is away from the feed hole 11 of the tube support 1 and the connecting hole 31 of the tube cutting fixing frame 3, and the feed hole 11 and the connecting hole 31 are in a fully open state; when the cutter fixing plate 21 abuts against the third section block 263, the tube cutting blade 22 completely blocks the feed hole 11 and the connecting hole 31 to separate them; then when the cutter fixing plate 21 moves relatively between the first section block 261 and the third section block 263 through the inclined connecting surface of the second section block 262, the tube cutting blade 22 moves toward or away from the stop block 24.

[0032] A roller 25 is provided at the end where the cutter fixing plate 21 and the top block 26 abut against each other. The roller 25 can reduce the friction between the cutter fixing plate 21 and the top block 26, making it easier for the top block 26 to push the cutter fixing plate 21 in the horizontal direction when moving in the vertical direction.

[0033] Furthermore, a limiting groove 32 is provided on the pipe cutting fixing frame 3, and the limiting groove 32 extends from the outer edge of the pipe cutting fixing frame 3 toward the connecting pipe hole 31. The roller 25 is located in the limiting groove 32 to limit the moving path of the cutting blade fixing plate 21, thereby improving the stability of the pipe cutting blade 22 in moving and cutting the nylon riveted pipe.

[0034] The elastic member 23 in this embodiment adopts a cylindrical compression spring. Two cylindrical compression springs are provided and are respectively located on the left and right sides of the pipe cutting blade 22. When the nylon riveted tube falls through the connecting pipe hole 31, it is located in the structure formed by the pipe cutting guide beam, the two cylindrical compression springs and the stopper 24.

[0035] In addition, a pipe connection mechanism 4 for receiving the end of the nylon rivet tube is provided below the pipe cutting fixed frame 3. The pipe connection mechanism 4 is used to support the nylon rivet tube passing through the pipe connection hole 31. The pipe connection mechanism 4 includes a pipe connection block 41 and a pipe connection shaft 42. The pipe connection block 41 is located directly below the pipe connection hole 31 opened on the pipe cutting fixed frame 3. The pipe connection shaft 42 is connected to the pipe connection block 41 to adjust the distance from the pipe connection block 41 to the pipe cutting fixed frame 3. At the same time, a through hole 33 for the pipe connection shaft 42 to pass through is provided on the pipe cutting fixed frame 3. The through hole 33 can limit the moving direction of the pipe connection shaft 42 to ensure that the pipe connection block 41 is always located directly below the pipe connection hole 31. A pull rope 43 for adjusting the height of the pipe connection shaft 42 is also provided at the top of the pipe connection shaft 42. The pipe connection shaft 42 pulled by the pull rope 43 can adjust the distance from the pipe connection block 41 to the pipe cutting fixed frame 3, and then adjust the distance from the bottom of the nylon rivet tube to the pipe cutting blade 22, so as to meet the size requirements of different workpiece processing.

[0036] In order to improve the stability of the descent of the nylon riveted tube, the tube support 1 is provided with a positioning tube 12 extending axially along the feeding hole 11 at its feeding hole 11. The inner diameter of the positioning tube 12 is adapted to the outer diameter of the nylon riveted tube to be processed, and the inner wall clearance of the nylon riveted tube and the positioning tube 12 is matched, so that the nylon riveted tube can naturally fall along the axial direction of the positioning tube 12, ensuring that the nylon riveted tube falls vertically to pass through the feeding hole 11 and the connecting hole 31 in turn, so that the tube cutting blade 22 can cut the falling nylon riveted tube in turn, which can reduce the occurrence of tube jams.

[0037] During the tube cutting process of the automatic binding machine tube cutting device of the present application, first, the first section block 261 of the top block 26 is fixed against the cutter fixing plate 21, and the cylindrical compression spring between the tube cutting blade 22 and the stopper 24 is in a natural state. The nylon rivet tube to be cut is not blocked by the tube cutting blade 22, and the tube hole 31 is opened. The nylon rivet tube can fall onto the tube block 41 located under the tube cutting fixing frame 3, and then the cutting length of the nylon rivet tube can be adjusted by pulling the tube shaft 42 and the tube block 41 up and down through the pulling rope 43.

[0038] Subsequently, by moving the top block 26 upward, the roller 25 at the end of the cutter fixing plate 21 moves from the first block 261 through the second block 262 to the area of ​​the third block 263. The roller 25 is pushed by the top block 26 to move the cutter fixing plate 21 toward the direction close to the nylon rivet tube. The cylindrical compression spring is compressed toward the stopper 24 at the same time. The tube cutting blade 22 moves toward the direction close to the stopper 24 to cut the nylon rivet tube of the number length. When the top block 26 rises to the point where the roller 25 abuts against the third block 263, the tube cutting blade 22 has completely cut the nylon rivet tube and closed the pipe connection hole 31. The uncut nylon rivet tube is blocked by the tube cutting blade 22 and cannot fall into the pipe connection hole 31.

[0039] Before the next pipe cutting operation, when the top block 26 moves downward, the roller 25 passes from the third block 263 through the second block 262 and enters the area of ​​the first block 261. The cutter fixing plate 21 moves toward the top block 26 under the elastic restoring force of the cylindrical compression spring, and the connecting pipe hole 31 opens. The nylon riveted pipe can fall through the connecting pipe hole 31 to the connecting pipe block 41 for the next pipe cutting.

[0040] When the tail pipe length of the nylon riveted pipe is less than the distance between the pipe support 1 and the pipe cutting fixing frame 3, the tail pipe will fall naturally, thereby avoiding the pipe jam caused by the tail pipe falling into the gap between the pipe cutting blade 22 and the pipe connecting fixing frame, which greatly improves the reliability of pipe cutting.

[0041] The present application also provides a tube-missing detection mechanism 5 between the tube support 1 and the tube cutting fixing frame 3. The tube-missing detection mechanism 5 is used to detect whether there is a nylon rivet tube in the tube support 1 and the tube cutting fixing frame 3 and output a detection signal indicating the presence of the nylon rivet tube, so that the automatic binding machine of the present application can automatically identify whether there is a tube missing and remind the worker, with a high degree of automation and high tube cutting efficiency.

[0042] In summary, the automatic binding machine tube cutting device of the present application optimizes the structure and completes the tube cutting operation of the nylon riveted tube by setting a top block 26 that moves up and down on the side of the binding machine. The structure is simple, and because the cutting mechanism 2 is set between the tube support 1 and the tube cutting fixing frame 3, when the remaining tail tube length of the nylon riveted tube is less than the distance between the tube support 1 and the tube cutting fixing frame 3, when the next tube cutting operation is performed, the tube cutting blade 22 opens the tube hole 31 under the elastic recovery force of the elastic member 23, and the tail tube will fall naturally, reducing the possibility of tube jamming. It is simple, practical, and easy to assemble.

[0043] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0044] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A tube cutting device for an automatic binding machine, characterized in that: The invention comprises a tube support, a cutting knife mechanism and a tube cutting fixing frame, wherein the tube support and the tube cutting fixing frame are relatively fixed, the tube support is provided with a feeding hole for the nylon rivet tube to be processed to pass through, the tube cutting fixing frame is coaxially provided with a connecting pipe hole corresponding to the position of the feeding hole, a connecting pipe mechanism for receiving the end of the nylon rivet tube is provided below the tube cutting fixing frame, the cutting knife mechanism is provided between the tube support and the tube cutting fixing frame for cutting the nylon rivet tube passing through the feeding hole and the connecting pipe hole, the cutting knife mechanism comprises a cutting knife fixing plate, a tube cutting blade, an elastic member and a stopper, the tube cutting blade is mounted on the cutting knife fixing plate, the stopper is fixed on the tube cutting fixing frame, the elastic member is provided between the tube cutting blade and the stopper, and the end of the cutting knife fixing plate facing away from the switching blade is provided with a driving member for pushing the cutting knife fixing plate to make the tube cutting blade close to the feeding hole and the connecting pipe hole.

2. The tube cutting device of the automatic binding machine according to claim 1, characterized in that: The driving member includes a top block that moves in a vertical direction to push the cutter fixing plate, the top block includes a first section block, a second section block and a third section block connected in a vertical direction, the width of the third section block is greater than the width of the first section block, and the surface of the second section block is obliquely connected between the first section block and the second section block; When the first section block abuts against the cutter fixing plate, the tube cutting blade is away from the feed hole and the connecting pipe hole; when the cutter fixing plate moves relatively along the surface of the second section block, the tube cutting blade moves toward the feed hole and the connecting pipe hole; when the cutter fixing plate abuts against the first section block, the tube cutting blade completely separates the feed hole and the connecting pipe hole.

3. The tube cutting device of the automatic binding machine according to claim 2, characterized in that: The end of the cutter fixedly abutting against the top block is provided with a roller.

4. The tube cutting device of the automatic binding machine according to claim 2, characterized in that: The pipe cutting fixing frame is provided with a limiting groove for limiting the top block to move only in the vertical direction.

5. The tube cutting device for an automatic binding machine according to claim 1, characterized in that: The connecting pipe mechanism includes a connecting pipe block and a connecting pipe shaft. The connecting pipe block is located directly below the connecting pipe hole opened on the pipe cutting fixing frame. The connecting pipe shaft is connected to the connecting pipe block to adjust the distance from the connecting pipe block to the pipe cutting fixing frame.

6. The tube cutting device for an automatic binding machine according to claim 5, characterized in that: The pipe cutting fixing frame is provided with a through hole for the pipe connecting shaft to pass through.

7. The tube cutting device for an automatic binding machine according to claim 5, characterized in that: The top end of the connecting pipe shaft is provided with a pulling rope for adjusting the height of the connecting pipe shaft.

8. The tube cutting device for an automatic binding machine according to claim 1, characterized in that: The tube support is provided with a positioning tube extending axially along the feeding hole at its feeding hole, and the inner diameter of the positioning tube is matched with the outer diameter of the nylon riveted tube to be processed.

9. The tube cutting device for an automatic binding machine according to claim 1, characterized in that: The elastic member of the cutting mechanism comprises cylindrical compression springs respectively located on both sides of the tube cutting blade.

10. The tube cutting device for an automatic binding machine according to claim 1, characterized in that: A pipe missing detection mechanism is also provided between the pipe support and the pipe cutting fixing frame.

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