A metal cable tie assembly machine

Abstract

The metal cable tie assembly machine disclosed in the application comprises a machine table, a steel belt driving mechanism, a steel belt cutting mechanism, a lock head conveying mechanism, a lock head positioning mechanism, a stamping and bending flattening mechanism and a finished product receiving mechanism which are arranged on the machine table and connected with a control system; the steel belt driving mechanism, the steel belt cutting mechanism, the lock head positioning mechanism, the stamping and bending flattening mechanism and the finished product receiving mechanism are sequentially arranged from back to front along the transmission direction of the steel belt; the metal cable tie assembly machine has the characteristics of reasonable structure design, automatic assembly of the lock head and the steel belt, stable operation and high production efficiency.

Description

Technical Field

[0001] This application relates to the field of structural design of cable tie production equipment, specifically to a metal cable tie assembly machine. Background Technology

[0002] Cable ties are widely used due to their advantages of quick binding, self-locking, and ease of use. They can be classified into metal cable ties and plastic cable ties based on their material.

[0003] Figures 1 to 4 The existing metal cable tie shown includes a steel strip 01 and a locking head 02. The locking head 02 has a flat side 026 and a raised side 027. A slot 021 is provided on the flat side 026, and the raised side 027 has an outward raised structure. A through-hole 022 and a through-hole 023 are respectively provided at both ends of the locking head 02. A roller track 024 is provided between the through-hole 022 and the through-hole 023. The height of the roller track 024 gradually increases from the through-hole 022 to the through-hole 023. A locking ball 025 is provided within the roller track 024 (the closer the locking ball 025 is to the through-hole 023 within the roller track 024, the greater its degree of freedom of movement). The front end of the steel strip 01 is... A connecting piece 011 is bent at the inlet 022 and attached to the outer side of the upper plane 026 of the lock head 02. The locking connection between the steel strip 01 and the lock head 02 is achieved by the locking point 012 formed by the stamping on the connecting piece 011 and the locking groove 021 on the lock head 02. The steel strip 01 has a punch 013 inside the lock head 02. When the metal cable tie is tightened, the punch 013 can play a certain limiting role for the lock ball 025. When binding items, the steel strip 01 wraps around the binding object so that the end of the cable tie is inserted into the lock head 02 through the inlet 022 and extends out through the outlet 023. When the binding is in place, the lock ball 025 is pressed against the steel strip 01 to achieve anti-reverse locking.

[0004] In the assembly and production of the aforementioned metal cable ties, the locking ball is first installed inside the lock head to form a component, and then the lock head and steel strip are assembled together to form the finished cable tie. In the existing technology, the assembly of the lock head is mostly automated, while the assembly of the lock head and steel strip is mostly manual. Specifically, during assembly, the tail end of the cable tie is first inserted into the lock head through the inlet, and the lock head is slid along the steel strip to the front end of the steel strip. The connecting piece is then engaged with the slot on the outside of the lock head through the locking point to complete the assembly. The manual assembly of the lock head and steel strip greatly restricts production efficiency. Summary of the Invention

[0005] In view of the shortcomings pointed out in the background art, this application aims to provide a metal cable tie assembly machine, which realizes the automated assembly of steel straps and lock heads, with stable working performance and high assembly efficiency.

[0006] The technical solution to achieve the purpose of this application is:

[0007] This application provides a metal cable tie assembly machine, including a machine base, and a steel strip drive mechanism, a steel strip cutting mechanism, a lock head conveying mechanism, a lock head positioning mechanism, a stamping and bending flattening mechanism, and a finished product receiving mechanism mounted on the machine base and connected to the control system.

[0008] The steel strip drive mechanism, steel strip cutting mechanism, lock head positioning mechanism, stamping and bending flattening mechanism, and finished product receiving mechanism are arranged sequentially from back to front along the steel strip transmission direction;

[0009] The steel strip driving mechanism is used to drive the steel strip to move back and forth along its transmission direction. The steel strip cutting mechanism is used to cut the steel strip according to a preset length. The lock head conveying mechanism is used to convey the lock head to the lock head positioning mechanism. The lock head positioning mechanism is used to receive the lock head and is adapted to position the lock head on the transmission path of the steel strip with the inlet in front and the outlet in back. The stamping and bending flattening mechanism is used to punch the locking point and punch the hole at the front end of the steel strip and bend and flatten it to form a connecting piece. The finished product receiving mechanism is used to receive and transfer the finished metal cable tie.

[0010] In a further technical solution of this application, the steel belt drive mechanism includes a pair of drive shafts arranged on the left and right, drive wheels fixed on each drive shaft, and a servo motor that drives the drive shafts to rotate. A transmission gear is fixed on each drive shaft, and the drive shafts are driven by meshing transmission gears. An output gear connected to the transmission gears is fixed on the power output shaft of the servo motor. The steel belt is clamped and driven to move by the pair of drive wheels.

[0011] In a further technical solution of this application, the steel strip cutting mechanism includes a mandrel, a cutting blade, a blade holder, and a first driving mechanism. The mandrel is provided with a strip passage that runs through the front and rear direction for the steel strip to pass through and a cutting blade hole that is perpendicularly connected to the strip passage. The cutting edge of the cutting blade extends into the cutting blade hole and is fixed on the blade holder. When the blade holder is driven to move by the first driving mechanism, it cuts the steel strip through the cutting edge of the cutting blade.

[0012] In a further technical solution of this application, multiple limiting shafts are fixed on the upper and lower sides of the belt channel, and are spaced apart along the front-back direction. The limiting shafts are arranged along the left-right direction, and support and limit the steel belt in the up-down direction.

[0013] In a further technical solution of this application, the lock head positioning mechanism is driven by the displacement mechanism to move at positions on and off the steel belt transmission path. The lock head positioning mechanism includes a front positioning block and a rear positioning block arranged opposite to each other, and a second driving mechanism that drives the front positioning block and the rear positioning block to move closer and further away in the front-rear direction. The front positioning block and the rear positioning block cooperate to clamp the lock head. The front positioning block is provided with a rearwardly extending insert, so that when the front positioning block and the rear positioning block are close together, the insert is inserted through the belt inlet of the lock head to block the lock ball in the raceway near the belt outlet position, and a belt-passing gap is formed in the lock head between the insert and the flat side for the steel belt to pass through.

[0014] In a further technical solution of this application, the front part of the rear positioning block is provided with a positioning groove for cooperating with the end of the lock head near the tape outlet, and a guide channel for the steel strip to pass through is provided on the rear side of the positioning groove. A stop step suitable for abutting against the rear end of the lock head is provided at the connection between the positioning groove and the guide channel. The positioning groove is open on the side of the lock head corresponding to the flat side, and the shape of the groove wall opposite to the open side in the positioning groove is adapted to the shape of the outer wall of the raised side of the lock head. The positioning groove is connected to the guide channel. When the lock head and the positioning groove form a positioning fit, the guide channel is aligned with the tape threading gap.

[0015] In a further technical solution of this application, the lock head conveying mechanism includes a feeding mechanism for conveying lock heads, a distributing mechanism disposed at the discharge end of the feeding mechanism for controlling the output of lock heads one by one, and a transferring mechanism for transferring lock heads from the distributing mechanism to the lock head positioning mechanism.

[0016] The feeding mechanism includes a vibratory feeder and a feeding track connected to the vibratory feeder;

[0017] The material distribution mechanism includes a material blocking cylinder and a clamping mechanism. The material blocking cylinder is fixed at the discharge port of the feeding track, and its cylinder rod can extend into the feeding track to block the lock head. The clamping mechanism includes a first pneumatic gripper finger for clamping the lock head from the discharge port and a baffle plate for blocking the lock head output from the discharge port. The clamping mechanism moves in the direction of approaching and moving away from the discharge port under the drive of a third drive mechanism.

[0018] The material transfer mechanism includes a second pneumatic gripper finger that holds the lock head and a material transfer drive mechanism that drives the second pneumatic gripper finger to move between the material distribution mechanism and the lock head positioning mechanism. Both the first pneumatic gripper finger and the second pneumatic gripper finger have a pair of openable and closable gripping arms.

[0019] In a further technical solution of this application, the stamping and bending flattening mechanism includes a first module and a second module arranged opposite to each other, a fourth drive mechanism and a fifth drive mechanism that respectively drive the first module and the second module to open and close relative to each other, and a bending knife driven by a sixth drive mechanism. The second module is mounted on a mounting block, and a spring is provided between the second module and the mounting block. The spring provides elastic force to the second module in the direction of the first module. The first module has a stamping clearance hole and a punching clearance hole on the side facing the second module. A wedge-shaped support block is provided at the front end of the first module, and the wedge-shaped support block is located opposite to the first module. A clearance space is formed on one side of the second module. A first punch through hole and a second punch through hole are provided on the second module at positions corresponding to the stamping clearance hole and the cutting clearance hole, respectively. A steel strip pressure block is provided at the front end of the second module at a position corresponding to the wedge-shaped support block. The mounting block is equipped with a first punch inserted into the first punch through hole and a second punch inserted into the second punch through hole. The bending knife is mounted on the bending mechanism and moves to the wedge-shaped support block under the drive of the sixth driving mechanism to bend the front end of the steel strip into the clearance space to form a connecting piece. The bent connecting piece is flattened when the first module and the second module are aligned.

[0020] In a further technical solution of this application, two vertically opposite and spaced-apart correction blocks are provided on the side of the second module facing the first module. A steel strip correction groove is formed between the two correction blocks and runs through the front-back direction. The steel strip correction groove is a trapezoidal flared groove facing the first module, and the bottom width of the groove matches the width of the steel strip. An avoidance groove is provided on the first module that is opposite to the correction blocks.

[0021] In a further technical solution of this application, the finished product receiving mechanism includes a gripper device fixed on a movable frame for clamping finished metal cable ties, a guide hopper fixed on the movable frame in front of the gripper device, and a seventh drive mechanism for driving the movable frame to move in the front-back direction. The guide hopper is a funnel-shaped structure arranged in the front-back direction, with the flared end of the funnel-shaped structure facing backward and opposite to the gripper device. The gripper device has a pair of openable and closable grippers.

[0022] This metal cable tie assembly machine enables automated assembly of lock heads and steel strips, thereby improving the assembly efficiency of metal cable ties and ensuring stable performance. During operation: the control system controls the steel strip drive mechanism to drive the steel strip forward. As the front end of the steel strip passes the lock head positioning mechanism, it enters the lock head through the outlet and exits through the inlet. The front end continues forward to the stamping and bending / flattening mechanism, where the locking points and holes are punched on the front end, and it is bent and flattened to form a connecting piece. The steel strip drive mechanism then moves the steel strip backward to connect the connecting piece with the lock head on the lock head positioning mechanism (specifically, the locking points and slots match). The steel strip drive mechanism then drives the steel strip forward again, and the steel strip cutting mechanism cuts the steel strip to the desired length to obtain the metal cable tie. Before the steel strip cutting mechanism cuts the steel strip, the finished product receiving mechanism holds the steel strip; after the steel strip cutting mechanism cuts the steel strip, the finished product receiving mechanism transfers the assembled finished metal cable tie away.

[0023] This application has positive effects:

[0024] The metal cable tie assembly machine of this application has a reasonable structural design. It can realize the automated assembly of lock heads and steel strips, thereby improving the assembly production efficiency of metal cable ties, and its working performance is stable. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of a metal cable tie structure;

[0027] Figure 2 for Figure 1 A cross-sectional view of the metal cable tie shown;

[0028] Figure 3 for Figure 1 The diagram shows the structure of the locking head in the metal cable tie.

[0029] Figure 4 for Figure 1 The diagram shows the structural diagram of the steel strip in the metal cable tie.

[0030] Figure 5 This is a schematic diagram of the metal cable tie assembly machine in this application;

[0031] Figure 6 for Figure 5The front view of the metal cable tie assembly machine shown in the image after removing the lock head conveying mechanism and the finished product receiving mechanism;

[0032] Figure 7 This is a schematic diagram of the structure removed from the rear of the metal cable tie assembly machine in this application;

[0033] Figure 8 This is a structural schematic diagram of the steel strip cutting mechanism (omitting the first drive mechanism) in this application;

[0034] Figure 9 This is a schematic diagram of the core rod structure in this application;

[0035] Figure 10 This is a schematic diagram of the structure when the cutting blade and the blade holder are in contact.

[0036] Figure 11 This is a cross-sectional view of the mandrel in this application cut along the axial direction;

[0037] Figure 12 This is a schematic diagram of the lock positioning mechanism in this application;

[0038] Figure 13 for Figure 12 The front view of the lock positioning mechanism shown;

[0039] Figure 14 For along Figure 13 A sectional view cut along line AA.

[0040] Figure 15 This is a schematic diagram of the structure of the second pneumatic gripper finger in this application;

[0041] Figure 16 This is a schematic diagram of the material distribution mechanism in this application;

[0042] Figure 17 This is a schematic diagram of the stamping and bending flattening mechanism in this application;

[0043] Figure 18 This is a front view of the first module, the second module, and the mounting block in this application when they are assembled.

[0044] Figure 19 This is a schematic diagram of the structure of the first module in this application;

[0045] Figure 20 This is a schematic diagram of the structure when the second module and the mounting block are assembled in this application;

[0046] Figure 21 This is a schematic diagram of the finished product receiving mechanism in this application;

[0047] Figure 22 This is a schematic diagram of the gripper device in this application.

[0048] The attached figures are labeled as follows:

[0049] 01-Steel strip; 011-Connecting piece; 012-Clamping point; 02-Locking head; 020-Threading gap; 021-Slot; 022-Belt inlet; 023-Belt outlet; 024-Roller; 025-Locking ball; 026-Flat side; 027-Raised side;

[0050] 1-Machine;

[0051] 2-Steel belt drive mechanism; 21-Drive shaft; 22-Drive wheel; 23-Transmission gear;

[0052] 3-Steel strip cutting mechanism; 31-Mandrel; 311-Strip passage; 312-Cut hole; 313-Limiting shaft; 314-Guide post insertion hole; 32-Cut blade; 321-Cut edge; 33-Cut holder; 34-First drive mechanism; 35-Guide post;

[0053] 4- Lock head conveyor mechanism; 41- Feeding mechanism; 411- Vibratory feeder; 412- Feeding track; 4120- Discharge port; 413- Straight vibration mechanism; 42- Material distribution mechanism; 421- Material blocking cylinder; 422- Clamping mechanism; 423- First pneumatic gripper finger; 424- Material baffle plate; 43- Material transfer mechanism; 431- Second pneumatic gripper finger; 44- Third drive mechanism; 45- Material transfer drive mechanism;

[0054] 5-Lock positioning mechanism; 50-Shifting mechanism; 51-Front positioning block; 510-Socket; 511-Insertion piece; 52-Rear positioning block; 521-Positioning groove; 522-Guide channel; 523-Stop step; 53-Second drive mechanism;

[0055] 6-Punching and bending flattening mechanism; 61-First module; 611-Punching clearance hole; 612-Punching clearance hole; 613-Wedge support block; 614-Clearing space; 62-Second module; 620-Steel strip pressure block; 621-First punch through hole; 622-Second punch through hole; 63-Fourth drive mechanism; 64-Fifth drive mechanism; 65-Sixth drive mechanism; 66-Bending knife; 67-Mounting block; 671-First punch; 672-Second punch; 68-Correction block; 69-Steel strip correction groove; 610-Clearing groove;

[0056] 7-Finished product receiving mechanism; 71-Moving frame; 72-Gripper device; 721-Gripper; 73-Guide hopper; 74-Seventh drive mechanism.

[0057] 8-Straight wheel set. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. In this application, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0060] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0061] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0062] This embodiment provides a metal cable tie assembly machine, which is used to assemble metal cable ties, specifically by assembling a steel strip 01 with a lock head 02 equipped with a locking bead 025.

[0063] like Figures 5 to 22As shown, the metal cable tie assembly machine includes a machine base 1, and a steel strip drive mechanism 2, a steel strip cutting mechanism 3, a lock head conveying mechanism 4, a lock head positioning mechanism 5, a stamping and bending flattening mechanism 6, and a finished product receiving mechanism 7 mounted on the machine base 1 and connected to the control system. The control system controls the steel strip drive mechanism 2, steel strip cutting mechanism 3, lock head conveying mechanism 4, lock head positioning mechanism 5, stamping and bending flattening mechanism 6, and finished product receiving mechanism 7 to perform coordinated actions, thereby realizing the automated assembly of steel strip 01 and lock head 02. The control system can be a CNC control system or a PLC control system.

[0064] In this embodiment, the steel strip drive mechanism 2, steel strip cutting mechanism 3, lock head positioning mechanism 5, stamping and bending flattening mechanism 6, and finished product receiving mechanism 7 are arranged sequentially from back to front along the steel strip transmission direction. When the steel strip 01 is conveyed forward, it passes through the steel strip drive mechanism 2, steel strip cutting mechanism 3, lock head positioning mechanism 5, stamping and bending flattening mechanism 6, and finished product receiving mechanism 7 in sequence.

[0065] The steel strip driving mechanism 2 is used to drive the steel strip 01 to move back and forth along its transmission direction. The steel strip cutting mechanism 3 is used to cut the steel strip 01 according to a preset length. The lock head conveying mechanism 4 is used to convey the lock head 02 to the lock head positioning mechanism 5. The lock head positioning mechanism 5 is used to receive the lock head 02 and is adapted to position the lock head 02 on the transmission path of the steel strip 01 with the inlet 022 in front and the outlet 023 behind. The stamping and bending flattening mechanism 6 is used to punch the locking point 012 and punch the hole 013 at the front end of the steel strip 01 and bend and flatten it to form a connecting piece 011. The flattened connecting piece 011 is in the same direction as the steel strip 01 and the end of the connecting piece 011 faces the tail of the steel strip 01 (e.g., ...). Figure 4 (as shown in the diagram), the finished product receiving mechanism 7 is used to receive and transfer finished metal cable ties;

[0066] This metal cable tie assembly machine enables automated assembly of the locking head 02 and the steel strip 01, thereby improving the assembly efficiency of metal cable ties and ensuring stable performance. During operation: the control system controls the steel strip drive mechanism 2 to drive the steel strip 01 forward. When the front end of the steel strip 01 passes the locking head positioning mechanism 5, it enters the locking head 02 through the outlet 023 and exits through the inlet 022. Then, the front end of the steel strip 01 continues to be conveyed forward to the stamping and bending flattening mechanism 6, where the locking point 012 and punch hole 013 are punched on the front end of the steel strip 01, and it is bent. The steel strip is flattened to form a connecting piece 011. Then, the steel strip drive mechanism 2 drives the steel strip 01 to move backward so that the connecting piece 011 connects with the lock head 02 on the lock head positioning mechanism 5 (specifically, the locking point 012 and the locking groove 021 cooperate). Then, the steel strip drive mechanism 2 drives the steel strip 01 to be conveyed forward, and the steel strip cutting mechanism 3 cuts the steel strip to the preset length to obtain the required length of metal cable tie. Before the steel strip cutting mechanism 3 cuts the steel strip, the finished product receiving mechanism 7 clamps the steel strip 01. After the steel strip cutting mechanism 3 cuts the steel strip 01, the finished product receiving mechanism 7 transfers the assembled finished metal cable tie away.

[0067] To improve the straightness of the steel strip 01 and thus improve the production quality of metal cable ties, a straightening wheel group 8 can be set behind the steel strip drive mechanism 2. In this way, the steel strip 01 is straightened by the straightening wheel group 8 before entering the steel strip drive mechanism 2. The straightening wheel group 8 includes a plurality of straightening wheels arranged alternately along the conveying direction of the steel strip 01. The transmission of the steel strip 01 through the straightening wheel group 8 can straighten the bent steel strip 01.

[0068] See Figure 7 As shown, in this embodiment, the steel belt drive mechanism 2 includes a pair of drive shafts 21 arranged on the left and right, drive wheels 22 fixed on each drive shaft 21, and a servo motor (not shown in the figure) that drives the drive shafts 21 to rotate. The servo motor is connected to the control system. A transmission gear 23 is fixed on each drive shaft 21. The drive shafts 21 are driven by the meshing of the transmission gear 23 to maintain synchronous rotation. An output gear that is connected to the transmission gear 23 is fixed on the power output shaft of the servo motor. The output gear and the transmission gear 23 are directly meshed or driven by a transition gear. When the servo motor rotates, it drives the output gear to rotate, which in turn drives the drive shaft 21 and the drive wheel 22 on it to rotate. The steel belt 01 is clamped by the drive wheels 22 on both sides and moves when the drive wheels 22 rotate. When the servo motor rotates forward, it drives the steel belt 01 to move forward. When the servo motor rotates in the forward direction, it drives the steel belt 01 to move backward.

[0069] Combination Figure 5 , Figure 6 and Figures 8 to 10As shown, the steel strip cutting mechanism 3 includes a mandrel 31, a cutter 32, a cutter holder 33, and a first driving mechanism 34. The mandrel 31 is provided with a strip passage 311 that runs through the front and back direction for the steel strip 01 to pass through, and a cutter hole 312 that is perpendicularly connected to the strip passage 311. The cutting edge 321 of the cutter 32 extends into the cutter hole 312, and the cutter 32 is fixed on the cutter holder 33. When the steel strip 01 passes through the steel strip cutting mechanism 3, it is conveyed through the strip passage 311. The cutter holder 33 is driven by the first driving mechanism 34 to move into the cutter hole 312, and the cutting edge 321 of the cutter 32 cuts the steel strip 01. More specifically, in order to discharge the waste generated when cutting the steel strip 01, the mandrel 31 is provided with a waste outlet that communicates with the cutter hole 312. The waste outlet is connected to a recycling pipe, and the waste generated when cutting the steel strip 01 can be discharged from the waste outlet and recycled through the recycling pipe.

[0070] In some implementation schemes, see Figure 11 As shown, multiple limiting shafts 313 are fixed on the upper and lower sides of the belt conveyor 311, distributed at intervals along the front-back direction. The limiting shafts 313 are arranged in the left-right direction and limit the steel belt 01 in the up-down direction. The limiting shafts 313 reduce the frictional resistance between the steel belt 01 and the belt conveyor 311. Moreover, the presence of the limiting shafts 313 can form a stable gap between the side wall of the belt conveyor 311 and the steel belt. Thus, stains (such as burrs, debris, grease) adhering to the steel belt are blocked by the limiting shafts 313 and remain in the gap without hindering the conveying of the steel belt, thereby ensuring the smooth conveying of the steel belt 01. The limiting shafts 313 are preferably made of tungsten carbide alloy material. Tungsten carbide has excellent properties such as high hardness and wear resistance, and better service durability.

[0071] In some embodiments, in order to make the cutting blade 32 move more flexibly, a guide post 35 is fixed on the blade holder 33 and is arranged in the same direction as the moving direction of the cutting blade 32, and a guide post insertion hole 314 that cooperates with the guide post 35 is provided on the mandrel 31. The cooperation between the guide post 35 and the guide post insertion hole 314 can play a good guiding role for the movement of the cutting blade 32 and ensure the stability of the movement of the cutting blade 32.

[0072] See Figures 12 to 14 As shown, in this embodiment, the lock head positioning mechanism 5 is driven by the shifting mechanism 50 to move at positions on and off the steel belt transmission path. When the lock head positioning mechanism 5 is on the steel belt transmission path, it positions the lock head 02 so that the steel belt 01 can be threaded and assembled. After the steel belt 01 and the lock head 02 are assembled, in order to prevent the lock head positioning mechanism 5 from affecting the movement of the lock head 02 forward with the steel belt, the lock head positioning mechanism 5 is controlled to move to a position off the steel belt transmission path under the drive of the shifting mechanism 50.

[0073] The lock head positioning mechanism 5 includes a front positioning block 51 and a rear positioning block 52 arranged opposite to each other, and a second driving mechanism 53 that drives the front positioning block 51 and the rear positioning block 52 to move closer and further away in the front-rear direction. The second driving mechanism 53 can be a pneumatic finger. The front positioning block 51 and the rear positioning block 52 are respectively arranged on the two gripping fingers of the pneumatic finger. The front positioning block 51 and the rear positioning block 52 cooperate to clamp the lock head 02. The front positioning block 51 is provided with a rearwardly extending insert 511 so that when the front positioning block 51 and the rear positioning block 52 are close together, the insert 511 is inserted through the inlet 022 of the lock head 02 to block the lock ball in the raceway near the outlet 023, and a threading gap 020 is formed in the lock head 02 between the insert 511 and the planar side 026 for the steel strip 01 to pass through.

[0074] With the above structure, when the lock head 02 is positioned on the lock head positioning mechanism 5, the insert 511 limits the lock ball 025 to a position near the tape outlet 023 on the raceway. The lock ball 025 has a large range of motion at this position, so the steel strip 01 will not be affected by interference when passing through the lock head, and the steel strip 01 will pass through the lock head 02 more smoothly. The tape inlet 022 of the lock head faces forward, and the tape outlet 023 faces backward. When the steel strip 01 is conveyed forward, its front end enters the lock head 02 through the tape outlet 023, passes through the tape passage gap 020, and exits through the tape outlet 023. Then, a locking point 0 is processed at the front end of the steel strip 01 by the stamping and bending flattening mechanism 6. 12. Punch holes 012 and connecting pieces 011, and then the steel belt drive mechanism 2 drives the steel belt 01 to move backward so that the connecting piece 011 connects with the upper plane side 026 of the lock head 02. After the lock head and the connecting piece 011 on the steel belt are connected together, the assembly is completed. Then the second drive mechanism 53 drives the front positioning block 51 and the rear positioning block 52 to move away from each other so that the insert piece 511 is removed from the lock head and the positioning of the lock head is released. Then the shifting mechanism 50 drives the lock head positioning mechanism 5 to move to a position that deviates from the steel belt transmission path to avoid blocking the lock head 02. Then the steel belt 01 and the lock head 02 move forward under the drive of the steel belt drive mechanism 2.

[0075] In some embodiments, to prevent the lock ball from getting stuck in the lock head 02 and obstructing the passage of the steel strip 01 through the lock head 02, an air nozzle is provided near the lock head positioning mechanism 5. The air nozzle is connected to an air source. Thus, when the lock head 02 is positioned on the lock head positioning mechanism 5, the air nozzle is aligned with the slot 021 on the upper plane side 026 of the lock head 02. Air is blown into the lock head 02 through the slot 021 by the air nozzle, which allows the lock ball 025 to move appropriately in the raceway, thereby preventing the steel strip from being blocked by the lock ball 025 when passing through the lock head 02.

[0076] Furthermore, see Figures 12 to 14As shown, the rear positioning block 52 has a positioning groove 521 at its front for engaging with the end of the lock head 02 near the outlet 023, and a guide channel 522 for the steel strip 01 to pass through is provided on the rear side of the positioning groove 521. A stop step 523 suitable for abutting against the rear end of the lock head 02 is provided at the connection between the positioning groove 521 and the guide channel 522. The positioning groove 521 is open on the side of the upper plane 026 of the lock head 02. This openness can play a role in avoiding interference when the connecting piece 011 engages with the lock head 02. The shape of the groove wall opposite the openness in the positioning groove 521 is similar to the outer wall of the raised side 027 of the lock head 02. The shapes are compatible, which facilitates the positioning of the lock head 02. The positioning groove 521 is connected to the guide channel 522. When the lock head 02 and the positioning groove 521 form a positioning fit, the guide channel 522 is aligned with the strapping gap 020. In this way, the lock head 02 is clamped and positioned from both ends by the cooperation of the front positioning block 51 and the rear positioning block 52. Specifically, the rear end of the lock head 02 abuts against the stop step 523, and the front end abuts against the front positioning block 521. During the assembly of the metal cable tie, the steel strip 01 can pass through the guide channel 522 and enter the lock sleeve 02, and can pass smoothly through the strapping gap 020 in the lock head 02.

[0077] In some embodiments, the insert 511 has a socket 510 at its root. When the front positioning block 51 and the rear positioning block 52 are close together, the socket 510 engages with the edge of the raised side 027 of the lock head 02 near the inlet 022, thereby ensuring the positioning effect of the lock head 02.

[0078] Combination Figure 15 and Figure 16As shown, in this embodiment, the lock head conveying mechanism 4 includes a feeding mechanism 41 for conveying lock heads 02, a distributing mechanism 42 disposed at the discharge end of the feeding mechanism 41 for controlling the output of lock heads 02 one by one, and a transferring mechanism 43 for transferring lock heads 02 from the distributing mechanism 42 to the lock head positioning mechanism 5; the feeding mechanism 41 includes a vibrating plate 411, a feeding track 412 connected to the vibrating plate 411, and a direct vibration mechanism 413 connected to the feeding track 412. When the vibrating plate 411 vibrates, the lock heads 02 are arranged in an orderly manner on the feeding track 412; the distributing mechanism 42 includes a blocking cylinder 421 and a clamping mechanism 422. The blocking cylinder 421 is fixed at the discharge port 4120 of the feeding track 412. Its cylinder rod can extend into the feeding track 412 to block the lock head 02, thereby pausing the conveying of the lock head 02. When the cylinder rod retracts into the blocking cylinder 421, the lock head 02 can continue to be conveyed. The clamping mechanism 422 includes a first pneumatic gripper 423 for clamping the lock head 02 from the discharge port 4120 and a baffle plate 424 for blocking the lock head 02 output from the discharge port 4120. The clamping mechanism 422 is driven by the third driving mechanism 44 to move in the direction of approaching and moving away from the discharge port 4120. The material transfer mechanism 43 includes a second pneumatic gripper 431 for clamping the lock head 02 and a material transfer driving mechanism 45 for driving the second pneumatic gripper 431 to move between the material distribution mechanism 42 and the lock head positioning mechanism 5. The first pneumatic gripper 423 and the driving second pneumatic gripper 431 each have a pair of openable and closable gripping arms. When the two gripping arms are close together, they can clamp the lock head 02. When they are separated, they can release the lock head 02. The baffle plate 424 can be fixed to the body of the first pneumatic gripper 423 or to the material transfer driving mechanism 45. In this embodiment, a cylinder is selected as the third driving mechanism 44. By setting the lock head conveying mechanism 4, which includes a feeding mechanism 41, a distributing mechanism 42, and a transferring mechanism 43, the lock head 02 is conveyed in an orderly manner from the lock head conveying mechanism 4 to the lock head positioning mechanism 5, thereby improving the assembly production efficiency.

[0079] When the lock head conveying mechanism 4 is running, the clamping mechanism 422 acquires a lock head 02 from the feeding mechanism 41, and then the material transfer mechanism 43 transfers the lock head 02 on the clamping mechanism 422 to the lock head positioning mechanism 5. Specifically, the clamping mechanism 422 moves to a position close to the discharge port 4120 under the drive of the third drive mechanism 44. The baffle plate 424 is directly opposite the discharge port 4120. The outer end of the first lock head 02 output from the discharge port 4120 abuts against the baffle plate 424. Then, the lock head 02 is clamped by the first pneumatic gripper 423. At the same time, the baffle cylinder 424 controls the cylinder rod to extend into the feeding track 412 to block the second lock head 02. Then, the third drive mechanism 44 drives the clamping mechanism 422 away from the discharge port 4120, which makes it convenient for the material transfer mechanism 43 to clamp the lock head 02 from the first pneumatic gripper 423.

[0080] In one embodiment, the stamping and bending flattening mechanism 6 includes a first module 61 and a second module 62 arranged opposite to each other, a fourth drive mechanism 63 and a fifth drive mechanism 64 that drive the first module 61 and the second module 62 to open and close relative to each other, and a bending knife 66 driven by a sixth drive mechanism 65. The second module 62 is mounted on a mounting block 67, and a spring is provided between the second module 62 and the mounting block 67. The spring provides elastic force to the second module 62 in the direction of the first module 61. The first module 61 has a stamping clearance hole 611 and a punching clearance hole 612 on the side facing the second module 62. A wedge-shaped support block 613 is provided at the front end of the first module 61, and a clearance space 614 is formed on the side of the wedge-shaped support block 613 facing away from the second module 62. The second module 62 has a first punch through hole 621 at a position corresponding to the stamping clearance hole 611 and a second punch through hole 622 at a position corresponding to the punching clearance hole 612. The front end of the second module 62 and the wedge-shaped support block 613 form a clearance space 614. A steel strip pressure block 620 is positioned opposite to the wedge-shaped support block 613. The mounting block 67 is equipped with a first punch 671 that inserts into the first punch through hole 621 and a second punch 672 that inserts into the second punch through hole 622. The bending blade 66 is mounted on the bending mechanism and moves to the wedge-shaped support block 613 under the drive of the sixth driving mechanism 65, bending the front end of the steel strip 01 into the clearance space 614 to form a connecting piece 011. The bent connecting piece 011 aligns with the first module 61 and the second module 62. The plate is flattened to accommodate the structural requirements of the connection between the connecting piece 011 and the upper plane side 026 of the lock head 02. The bending mechanism is a commonly used mechanism on spring forming machines and can adopt existing technology. The bending mechanism usually includes a corner bender and a movable blade holder that is linked with the corner bender. The bending blade 66 is installed on the movable blade holder, and the corner bender is fixed on the machine base 1. The movable blade holder is driven by the sixth drive mechanism 65 and will rotate through the cooperation with the corner bender, thereby driving the bending blade 66 to bend the front end of the steel strip 01.

[0081] When the aforementioned stamping and bending flattening mechanism 6 is in operation, the first module 61 and the second module 62 are brought closer together by the fourth drive mechanism 63 and the fifth drive mechanism 64. Initially, when the first module 61 and the second module 62 are engaged, they press down on the steel strip 01. Then, as the mounting block 67 continues to approach the first module 61, the first punch 671 and the second punch 672 extend out of the first punch through hole 621 and the second punch through hole 622, respectively, to stamp and create the locking point 012 and the punch hole 013 on the steel strip 01. At the same time, the steel strip 01 is pressed down by the wedge-shaped support block 613 and the steel strip pressing block 620. Then, the sixth drive mechanism 65 drives the bending blade 66 to bend the front end of the steel strip 01 into the clearance space 614 to form a hook. Then, the fourth drive mechanism 63 and the fifth drive mechanism 64 drive the first module 61 and the second module 62 to separate. The steel strip drive mechanism 2 drives the steel strip 01 to move forward, first causing the hook to disengage from the wedge-shaped support block 613. Then, the steel strip drive mechanism 2 drives the steel strip 01 to move backward between the first module 61 and the second module 62. Then, the first module 61 and the second module 62 approach each other to flatten the hook and form the connecting piece 011 (e.g., Figure 4 (as shown in the diagram), and after the first module 61 and the second module 62 are separated, the steel belt drive mechanism 2 drives the steel belt 01 to move backward so that the connecting piece 011 hooks onto the outside of the plane side of the lock head 02 positioned on the lock head positioning mechanism. At the same time, the locking point 012 and the slot 021 cooperate to complete the assembly.

[0082] In a further implementation plan, combined with Figures 18 to 20 As shown, in order to ensure the processing accuracy of the punched points 012 and punched holes on the steel strip 01, two vertically opposite and spaced-apart correction blocks 68 are provided on the side of the second module 62 facing the first module 61. A steel strip correction groove 69 is formed between the two correction blocks 68 and runs through the front and back direction. The steel strip correction groove 69 is a trapezoidal flared groove facing the first module 61. The bottom width of the steel strip correction groove 69 matches the width of the steel strip 01. An avoidance groove 610 is provided on the first module 61 opposite to the correction blocks 68. The steel strip correction blocks 68 can correct the position of the steel strip 01 at the stamping and bending flattening mechanism 6, thereby ensuring the stamping processing accuracy of the punched points 012 and punched holes 013. The purpose of setting the steel strip correction groove 69 is that when the first module 61 and the second module 62 are aligned, the avoidance groove 610 can avoid the correction blocks 68.

[0083] See Figure 21 and Figure 22As shown, in some embodiments, the finished product receiving mechanism 7 includes a gripper device 72 fixed on the movable frame 71 for holding finished metal cable ties, a guide hopper 73 fixed on the movable frame 71 in front of the gripper device 72, and a seventh drive mechanism 74 for driving the movable frame 71 to move in the front-back direction. The seventh drive mechanism 74 can be a cylinder or an electric push rod. The guide hopper 73 is a funnel-shaped structure arranged in the front-back direction, with the flared end of the funnel-shaped structure facing backward and opposite to the gripper device 72. This facilitates the front end of the assembled metal cable tie extending into the guide hopper. 73; The gripper device 72 has a pair of openable grippers 721. The gripper device 72 can be pneumatic fingers. A detection sensor connected to the control system is set on the gripper 721. When the gripper device 72 grips the steel strip 01, the position of the metal cable tie can be detected by the detection sensor. When the finished product receiving mechanism 7 is working, the seventh drive mechanism 74 drives the gripper device 72 to move backward and clamp the assembled metal cable tie. Then, the seventh drive mechanism 74 drives the gripper device 72 to move the metal cable tie forward to recycle the finished metal cable tie.

[0084] In this embodiment, the steel strip drive mechanism 2, the shifting mechanism 50, the first drive mechanism 34, the material transfer drive mechanism 45, the fourth drive mechanism 63, the fifth drive mechanism 64, the sixth drive mechanism 65, etc., are driven by servo motors as the drive source. Through transmission components (such as cam transmission components, which are widely used in spring forming machines), the controlled components are driven to move at high speed, so as to achieve high-efficiency assembly of metal cable ties.

[0085] Obviously, the above embodiments of this application are merely examples for clearly illustrating this application, and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, these obvious variations or modifications derived from the essential spirit of this application still fall within the protection scope of this application.

Claims

1. A metal cable tie assembly machine, characterized in that, It includes a machine base (1), and a steel strip drive mechanism (2), a steel strip cutting mechanism (3), a lock head conveying mechanism (4), a lock head positioning mechanism (5), a stamping and bending flattening mechanism (6), and a finished product receiving mechanism (7) mounted on the machine base (1) and connected to the control system. The steel strip drive mechanism (2), steel strip cutting mechanism (3), lock head positioning mechanism (5), stamping and bending flattening mechanism (6) and finished product receiving mechanism (7) are arranged sequentially from back to front along the steel strip transmission direction; The steel strip driving mechanism (2) is used to drive the steel strip (01) to move back and forth along its transmission direction. The steel strip cutting mechanism (3) is used to cut the steel strip (01) according to a preset length. The lock head conveying mechanism (4) is used to convey the lock head (02) to the lock head positioning mechanism (5). The lock head positioning mechanism (5) is used to receive the lock head (02) and is adapted to position the lock head (02) on the transmission path of the steel strip (01) with the inlet (022) in front and the outlet (023) behind. The stamping and bending flattening mechanism (6) is used to punch the clamping point (012) and punch the hole (013) at the front end of the steel strip (01) and bend and flatten it to form a connecting piece (011). The finished product receiving mechanism (7) is used to receive and transfer the finished metal cable tie. The lock head positioning mechanism (5) is driven by the shifting mechanism (50) to move at positions on and off the steel belt transmission path. The lock head positioning mechanism (5) includes a front positioning block (51) and a rear positioning block (52) arranged opposite to each other, and a second driving mechanism (53) to drive the front positioning block (51) and the rear positioning block (52) to move closer and further away in the front-rear direction. The front positioning block (51) and the rear positioning block (52) cooperate to clamp the lock head (02). The front positioning block (51) is provided with a rearward extending insert (511) so that when the front positioning block (51) and the rear positioning block (52) are close together, the insert (511) is inserted through the inlet (022) of the lock head (02) to block the lock ball (025) in the raceway near the outlet (023), and to form a threading gap (020) between the insert (511) and the flat side (026) of the lock head (02) for the steel strip (01) to pass through.

2. The metal cable tie assembly machine according to claim 1, characterized in that, The steel belt drive mechanism (2) includes a pair of drive shafts (21) arranged on the left and right, drive wheels (22) fixed on each drive shaft (21), and a servo motor that drives the drive shafts (21) to rotate. A transmission gear (23) is fixed on each drive shaft (21), and the drive shafts (21) are driven by the meshing of the transmission gear (23). An output gear that is connected to the transmission gear (23) is fixed on the power output shaft of the servo motor. The steel belt (01) is clamped and driven to move by the pair of drive wheels (22).

3. The metal cable tie assembly machine according to claim 1, characterized in that, The steel strip cutting mechanism (3) includes a mandrel (31), a cutter (32), a cutter holder (33), and a first driving mechanism (34). The mandrel (31) is provided with a strip passage (311) that runs through the front and back direction for the steel strip (01) to pass through, and a cutter hole (312) that is perpendicularly connected to the strip passage (311). The cutting edge (321) of the cutter (32) extends into the cutter hole (312). The cutter (32) is fixed on the cutter holder (33). When the cutter holder (33) is driven to move by the first driving mechanism (34), it cuts the steel strip (01) through the cutting edge (321) of the cutter (32).

4. The metal cable tie assembly machine according to claim 3, characterized in that, The mandrel (31) is fixed with multiple limiting shafts (313) that are spaced apart along the front-back direction on both the upper and lower sides of the belt channel (311). The limiting shafts (313) are arranged along the left-right direction and support and limit the steel strip (01) in the up-down direction.

5. The metal cable tie assembly machine according to claim 1, characterized in that, The rear positioning block (52) has a positioning groove (521) at the front for engaging with the end of the lock head (02) near the outlet (023), and a guide channel (522) for the steel strip (01) to pass through is provided on the rear side of the positioning groove (521). A stop step (523) suitable for abutting against the rear end of the lock head (02) is provided at the connection between the positioning groove (521) and the guide channel (522). The positioning groove (521) is open on the side of the lock head with the flat side (026), and the shape of the groove wall opposite to the open side in the positioning groove (521) is adapted to the shape of the outer wall of the raised side (027) on the lock head. The positioning groove (521) is connected to the guide channel (522). When the lock head and the positioning groove (521) form a positioning engagement, the guide channel (522) is aligned with the belt threading gap (020).

6. The metal cable tie assembly machine according to claim 1 or 5, characterized in that, The lock head conveying mechanism (4) includes a feeding mechanism (41) for conveying lock heads, a distributing mechanism (42) set at the discharge end of the feeding mechanism (41) for controlling the output of lock heads one by one, and a transferring mechanism (43) for transferring lock heads from the distributing mechanism (42) to the lock head positioning mechanism (5). The feeding mechanism (41) includes a vibratory feeder (411) and a feeding track (412) connected to the vibratory feeder (411). The material distribution mechanism (42) includes a material blocking cylinder (421) and a clamping mechanism (422). The material blocking cylinder (421) is fixed at the discharge port (4120) of the feeding track (412), and its cylinder rod can extend into the feeding track (412) to block the lock head. The clamping mechanism (422) includes a first pneumatic clamping finger (423) for clamping the lock head from the discharge port (4120) and a baffle plate (424) for blocking the lock head output from the discharge port (4120). The clamping mechanism (422) is driven by a third driving mechanism (44) to move in the direction of approaching and moving away from the discharge port (4120). The material transfer mechanism (43) includes a second pneumatic gripper (431) that holds the lock head and a material transfer drive mechanism (45) that drives the second pneumatic gripper (431) to move between the material distribution mechanism (42) and the lock head positioning mechanism (5). The first pneumatic gripper (423) and the second pneumatic gripper (431) each have a pair of openable and closable gripping arms.

7. The metal cable tie assembly machine according to claim 1, characterized in that, The stamping and bending flattening mechanism (6) includes a first module (61) and a second module (62) arranged opposite to each other, a fourth drive mechanism (63) and a fifth drive mechanism (64) that drive the first module (61) and the second module (62) to open and close relative to each other, and a bending knife (66) driven by a sixth drive mechanism (65). The second module (62) is mounted on a mounting block (67), and a spring is provided between the second module (62) and the mounting block (67). The spring provides elastic force to the second module (62) in the direction of the first module (61). The first module (61) has a stamping clearance hole (611) on the side facing the second module (62), and a wedge-shaped support block (613) is provided at the front end of the first module (61). A clearance space is formed on the side of the wedge-shaped support block (613) facing away from the second module (62). 614), the second module (62) is provided with a first punch through hole (621) corresponding to the punching clearance hole (611) and a second punch through hole (622) corresponding to the punching clearance hole (612). The front end of the second module (62) is provided with a steel strip pressure block (620) corresponding to the wedge support block (613). The mounting block (67) is equipped with a first punch (671) inserted into the first punch through hole (621) and a second punch (672) inserted into the second punch through hole (622). The bending knife (66) is mounted on the bending mechanism and moved to the wedge support block (613) under the drive of the sixth driving mechanism (65) to bend the front end of the steel strip (01) into the clearance space (614). The bent connecting piece (011) is flattened when the first module (61) and the second module (62) are aligned.

8. The metal cable tie assembly machine according to claim 7, characterized in that, On the side of the second module (62) facing the first module (61), there are two vertically opposite and spaced-apart correction blocks (68). A steel strip correction groove (69) is formed between the two correction blocks (68) and runs through the front and back direction. The steel strip correction groove (69) is a trapezoidal flared groove facing the first module (61). The bottom width of the groove matches the width of the steel strip (01). On the first module (61), there is an avoidance groove (610) that is opposite to the correction block (68).

9. The metal cable tie assembly machine according to claim 1, characterized in that, The finished product receiving mechanism (7) includes a gripper device (72) fixed on the movable frame (71) for gripping finished metal cable ties, a guide hopper (73) fixed on the movable frame (71) in front of the gripper device (72), and a seventh drive mechanism (74) for driving the movable frame (71) to move in the front-back direction. The guide hopper (73) is a funnel-shaped structure arranged in the front-back direction, with the flared end of the funnel-shaped structure facing backward and opposite to the gripper device (72). The gripper device (72) has a pair of openable grippers (721).

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