Closed shackle steel bander and method of banding

Abstract

The application discloses a closed lock buckle steel band bundling method, comprising the following steps: S100, pushing a closed lock buckle into a clamping mechanism through a lock buckle driving device; S200, the clamping mechanism captures the closed lock buckle; S300, the lock buckle driving device is withdrawn to a first withdrawal position; S400, starting stringing, guiding the steel band to pass through the opening of the lock buckle driving device after passing through the closed lock buckle; S500, after the steel band passes around the object to be bundled for one round, guiding the steel band to pass through the closed lock buckle again; S600, bending the head of the steel band passing out of the lock buckle to the direction of the lock buckle to form a bending part; and S700, locking the lock buckle to clamp tightly, and completing the bundling. The application can realize automatic bundling of the closed lock buckle.

Description

[0001] This application claims priority to Chinese patent applications filed on June 10, 2022, with application numbers CN202221446591.1, CN202210654990.5, and CN202210653010.X, the entire contents of each of which are incorporated herein by reference. Technical Field

[0002] This invention relates to steel strapping machines, and more particularly to a closed-lock steel strapping machine and its strapping method, which can automatically complete the strapping task using closed locks. Background Technology

[0003] A steel strapping machine is a machine that uses steel straps to bundle items. The width of the steel straps used for bundling is usually 13mm-19mm, but 40-50mm wide straps can also be used depending on the goods being bundled. The items being bundled can be various steel coils, such as hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, etc., various steel pipes, such as seamless steel pipes, galvanized steel pipes, or various bars, such as rebar and round steel.

[0004] During the baling process, the baler locks the steel strapping with a buckle after it is tightened, thus completing the baling process. For example... Figure 12 As shown, baling locks are generally divided into closed locks and open locks. Closed locks have a closed chamber, while open locks are open. Closed locks are more complex to operate and are usually used in manual balers, while automatic balers typically use open locks. Compared to open locks, the opening height H of a closed lock is smaller than the opening height h of an open lock. This makes it more difficult for the steel strapping to pass through the closed lock, making the baling operation more complex and difficult to automate.

[0005] For further details, please refer to [link / reference]. Figure 13A For closed locking buckles, during the bundling process, the operator will pass the steel strap 11 through the closed chamber of the locking buckle 11 from one end and out from the other end to bundle the goods 15. After that, the strap is passed back into the locking buckle 14. After it comes out, the end of the steel strap is manually folded back in the opposite direction to form a bend 111. Then the steel strap 11 is tightened, and the bend 111 is squeezed between the goods 15 and the locking buckle 14. Due to the presence of the bend 111, the steel strap 11 will not be pulled out of the locking buckle during the tightening process. In this way, the bend 111 can allow the steel strap 11 to withstand greater tension during the tightening process, thereby bundling the goods more securely.

[0006] For open latches, such as Figure 13BAs shown, the buckle covers the steel strip. After the steel strip is tightened, the open buckle is locked by the snap-on mechanism, thus completing the binding. Because the open buckle does not have a bend, the tensile force on the steel strip 112 is relatively small. This results in a relatively low binding force compared to the closed buckle. On the other hand, because there is no fold-back part, the lower layer of steel strip 112 can easily fall out of the buckle after binding. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a closed-loop locking steel strapping machine and its strapping method.

[0008] A closed-loop locking steel strapping machine includes a steel strapping guide device, a steel strapping pressing device, a steel strapping tensioning device, and a fixed base, all fixedly placed from top to bottom. A locking engagement box and a locking magazine are provided on one side of the fixed base. An electromagnet is installed between the locking engagement box and the locking magazine, and the closed-loop locking buckles are stored in the locking magazine. A guide is provided inside the fixed base, and a bottom guide is provided at the bottom of the fixed base. The locking buckles are pushed into the grippers in the engagement box by a locking drive device, and the grippers are partially engaged. The state captures the latch; the steel strip passes through the closed latch under the guidance of the guide, and passes through the opening of the latch drive device into the bottom guide under the action of the electromagnet; the steel strip passes through the closed latch again through the bottom guide; the latch drive device is provided with a bending plate, which can bend the head of the steel strip passing through the closed latch towards the latch to form a bent part; after the steel strip is tightened, the gripper changes from the half-engaged state to the fully engaged state to lock the closed latch.

[0009] Optionally, a right partition is provided between the latch magazine and the latch engagement box, separating the gripper from the latch magazine. An electromagnet is fixed to the right partition on the side of the right partition facing the gripper. The latch drive device can slide along a guide rail, allowing the latch to pass under the right partition and the electromagnet and enter the gripper under the push of the latch drive device. A left partition is provided between the latch engagement box and the base, separating the gripper from the base. A guide is fixed to the left partition on the side of the left partition facing the base. The guide has a main body with an L-shaped fixing notch formed on the rear wall of the main body. An arc-shaped central guide cavity is located below the main body, extending forward to form an open arc-shaped front guide plate. The front guide plate extends to the passive feed pulley in the base. Between the active feed pulley and the central guide cavity, the central guide cavity extends rearward to form a closed, generally straight rear guide cavity; a fixing protrusion corresponding to the L-shaped fixing notch is provided on the left partition, and the rear wall of the guide is fixed to the fixing protrusion; an upper through hole is provided on the left partition at a position corresponding to the rear guide cavity, and the rear guide cavity passes through the upper through hole, with the diameter of the rear guide cavity gradually decreasing; the locking drive device has an upper push plate, and an open-shaped lower slide plate is fixed below the upper push plate, and the upper push plate and the lower slide plate can slide together along the guide rail; the front width of the upper push plate gradually decreases to form a buckle portion, and the width of the buckle portion is smaller than the width of the lock; a curved bending plate is provided at the front end of the lower slide plate, facing the biting direction, and an opening is formed between the bending plate and the upper push plate for the steel strip to pass through.

[0010] A method for bundling steel straps with a closed locking mechanism includes the following steps: S100: The closed locking mechanism is pushed into the engagement mechanism by a locking driving device; S200: The engagement mechanism captures the closed locking mechanism; S300: The locking driving device retracts to the first retraction position; S400: The strap is threaded, guiding the steel strap through the closed locking mechanism and then through the opening of the locking driving device; S500: After the steel strap wraps around the object to be bundled once, it is guided to pass through the closed locking mechanism again; S600: The head of the steel strap that has passed through the locking mechanism is bent towards the locking mechanism to form a bent portion; S700: The locking mechanism is locked and engaged, completing the bundling.

[0011] The beneficial effects of this invention are as follows: This invention can realize automatic bundling of closed-loop locks. Through a series of guiding mechanisms described in the specification, such as guides and inclined guides, the steel strip can be accurately guided into the closed-loop lock. Such guiding mechanisms are essential for closed-loop locks with small openings. Through, for example, a bending plate, the head of the steel strip can be bent to form a bend, which allows the steel strip to withstand greater tension during bundling, thereby securing the goods more tightly. After the bundling task is completed, because the bend is squeezed between the lock and the goods, the steel strip is less likely to detach from the lock, making it more stable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the baler; Figure 2 This is a schematic diagram of the rear side structure of the baler; Figure 3 This is a schematic diagram of the front structure of a baler; Figure 4 This is a schematic diagram of the steel strip clamping device. Figure 5 This is a sectional view of a baler; Figure 6 This is a cross-sectional view of the guide; Figure 7 This is a schematic diagram of the bootloader structure; Figure 8 This is a sectional view of the latch drive device; Figure 9 A rear-view perspective view of the latch drive device; Figures 10A to 10H This is a diagram illustrating the bundling process; Figure 11 Here is a flowchart of the bundling method; Figure 12 Diagram of the locking mechanism; Figure 13A Diagram showing the bundling and locking mechanism; Figure 13B A diagram illustrating the bundling of open locking mechanisms. Detailed Implementation

[0013] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the above and other objects, features, and advantages of the present invention will become clearer. In all the drawings, the same reference numerals indicate the same parts. The drawings are not intentionally drawn to scale; the focus is on illustrating the main points of the invention.

[0014] It should be understood that the singular forms “a,” “an,” and “the” include plural objects unless the context explicitly indicates otherwise. Thus, for example, referring to a “module” includes referring to one or more such modules. The advantages and features of the invention, as well as methods of implementing the invention, can be more readily understood by referring to the detailed description and accompanying drawings of the embodiments below. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the invention will be thorough and complete, and fully convey the concept of the invention to those skilled in the art.

[0015] See also Figure 1 , Figure 2 and Figure 3 The steel strip guide device 1, steel strip pressing device 2, steel strip tensioning device 3, and fixed base 4 are fixedly placed from top to bottom. The pressing cylinder 22 on the steel strip pressing device 2 is fixedly connected to the support plate 34 on the steel strip tensioning device 3.

[0016] like Figure 3 As shown, the steel strip guide device 1 is provided with a steel strip guide hole 23, the steel strip pressing device 2 has a steel strip guide hole 23, and the steel strip tensioning device 3 has a steel strip guide rod 31 that are connected and pass through the steel strip 11, such as Figure 3 As shown by the dashed line in the image.

[0017] like Figure 3 and Figure 4 As shown, the steel strip 11 is fed out from the storage device 13. When the steel strip 11 enters the steel strip guide hole 23 through the guide wedge on the steel strip guide device 1, as the steel strip continues to be fed in, it will enter the steel strip guide hole 23 of the steel strip pressing device 2. Then, due to the chamfering action on the steel strip guide block 211, it is prevented that the steel strip is difficult to feed in when the gap between the pressure block 26 and the pad block 27 is too large. That is, the steel strip guide continues to enter downwards of the steel strip guide hole 23 until it enters the steel strip guide rod 31 of the steel strip tensioning device 3. As the steel strip continues to go deeper, it will enter the fixed base 4 until it exits the lower end face of the fixed base 4.

[0018] When the steel strip needs to be tensioned, the pressure block 26 of the steel strip clamping device 2 presses against the pad block 27 to firmly fix the steel strip inside the steel strip clamping housing 25. Then, the tensioning cylinder inside the tensioning cylinder housing 33 is activated, causing the piston rod of the tensioning cylinder to extend and move the upper part of the steel strip tensioning device 3, the steel strip clamping device 2, and the steel strip guide device 1 upward to tighten the steel strip and achieve the tensioning of the steel strip.

[0019] The working principle of the steel strip clamping device 2: When it is necessary to clamp the steel strip, the clamping cylinder 22 is activated, causing the piston rod of the clamping cylinder 22 to move upward. Since the clamping cylinder 22 is hinged to the connecting rod 24 through a hinge shaft, and the connecting rod 24 is provided with a hinge shaft sliding groove, when the clamping cylinder 22 moves upward, the hinge shaft will move within the hinge shaft sliding groove, and move the left end of the connecting rod 24 upward, causing the connecting rod 24 to rotate around the shaft. At this time, the right end of the connecting rod 24 will move downward in an arc. Since the shortest distance between two points is a straight line, when the pressure block 26 at the right end of the connecting rod 24 is horizontal, the distance between it and the pad 27 is the shortest, that is, the pressure block 26 presses against the pad 27, thus achieving the purpose of clamping the steel strip. A clamping cylinder limit rod 28 is set below the clamping cylinder 22 to ensure that the rotation angle of the pressure block 26 is limited within a certain range under the transmission of the clamping cylinder 22.

[0020] Working principle of steel strip tensioning device 3: When steel strip tensioning is required, the tensioning cylinder inside the tensioning cylinder housing 33 is activated. Since the piston rod of the tensioning cylinder passes through the support plate 34 and is fixedly connected to the steel strip guide rod housing 36, and the support plate 34 is placed on the steel strip guide rod housing 36, when the tensioning cylinder is activated, the support plate 34, the tensioning cylinder housing 33, the steel strip pressing device 2 connected through the connecting plate 32, and the steel strip guiding device 1 connected to the steel strip pressing housing 25 will move upward relative to the steel strip guide rod housing 36. Since the vertical limiting rod 35 is a vertical rod, it can move upward to prevent the upward movement of the part from being displaced, which would cause wrinkles in the steel strip and affect the quality of the steel strip.

[0021] Because the upper end of the steel strip guide rod 31 has a tapered guide groove that is wider at the top and narrower at the bottom, the steel strip guide rod 31 will move upward when the steel strip is tensioned. Since the steel strip guide rod housing 36 is fixedly connected to the fixed base 4 via the base 37, steel strip tensioning mainly involves tensioning the steel strip within the fixed base 4 and the steel strip tensioning device 3. During tensioning, the upper and lower limits of the tensioning cylinder piston rod extension are set by the upper and lower position sensors of the tensioning cylinder on the connecting plate 32 to ensure the tension of the steel strip. In this design, there are several tensioning cylinders, evenly distributed along the edges of the tensioning cylinder housing 33.

[0022] The steel strip tensioning mechanism 5 is fixed inside the fixed base 4, the snap fastener drive device 6 is fixed on the upper end face of the snap fastener engagement box 7, the snap fastener engagement box 7 is fixed on the right end face of the fixed base 4, the snap fasteners in the snap fastener magazine 9 located on the right side of the snap fastener engagement box 7 are pushed into the snap fastener engagement box 7 by the snap fastener drive device 8, and the bottom of the baler forms a bottom guide 42 through which the steel strip 11 can pass.

[0023] like Figure 3As shown, the steel strip passes through the steel strip guide device 1, then through the steel strip pressing device 2, and after passing through the steel strip tensioning device 3, it enters the fixed base 4. It then enters between the passive feed roller 53 and the active feed roller 51. The active feed roller 51 rotates, feeding the steel strip 11 into the guide 16. After passing through the guide 16, it enters the locking engagement box 7. In the locking engagement box 7, the steel strip 11 passes through the closed locking buckle 14 and then continues into the bottom guide 42. From the bottom guide 42, it enters the outer guide 42 located outside the baler, and then, via the outer guide 42, it circles the bundled object 15 once. The strap head returns to the bottom guide 42 on the lower end face of the fixed base 4, and is guided back into the locking engagement box 7 through the bottom guide 42. It then passes through the closed locking buckle 14 again. The positioning detection sensor detects the positioning of the strap head. After positioning, the subsequent bending mechanism is activated to bend the strap head that has passed through the closed locking buckle 14 in the opposite direction, thereby forming a folded section. The hydraulic cylinder 55 drives the steel strap tensioning mechanism 5 to tighten the steel strap 11 and bind the bundled object 15. Then, the locking buckle drive device 6 engages the locking buckle 14, so that the steel strap is engaged and the bundling is completed.

[0024] An active flap 10-1 and a passive flap 12 are provided on one side of the fixed base 4. The active flap 10-1 and the passive flap 12 are linked. For example, a cover plate can be provided between the active flap 10-1 and the passive flap 12, which can cover the bottom guide 42 after the flaps are flipped. The active flap 10-1 is normally in the open state. When the flap 10-1 needs to be opened, the flap cylinder 10-2 on the fixed base 4 rotates the active flap arm 10-3 90 degrees, opening the flap 10-1 to the rear of the machine head. Conversely, the flap 10-1 will be locked onto the bottom guide 42. The active flap 10-1 and the passive flap 12 are mainly used to guide and fix the steel belt 11, preventing the steel belt 11 from coming out of the bottom guide 42 during the threading process.

[0025] The latch drive device 6 consists of a latch drive motor, an eccentric wheel assembly, and a base. The latch drive motor provides power to the latch unit; the eccentric wheel assembly converts rotational motion into linear motion. When the eccentric wheel rotates, the change in its radius drives the connecting rod to reciprocate. The latch engagement housing 7 contains a latch 19, which, during the reciprocating motion of the connecting rod, moves in three states: open, half-engaged, and fully engaged.

[0026] Specifically, when the bite drive motor is in the zero position, the bite 19 is in the open state, the distance between the bite 19 is the largest, and the lock 14 can be pushed into the bite 19 relatively easily; when rotating from the zero position to the half bite state, the half bite sensor has a signal, the distance between the bite 19 decreases, so that the bite 19 can just grab the lock 14; the drive motor continues to rotate, and the bite 19 enters the fully engaged state, so that the steel strip 11 is clamped.

[0027] See also Figure 5 , Figure 6 and Figure 7 The latch magazine 9 contains a closed latch 14. A right partition 21 is provided between the latch magazine 9 and the latch engagement box 7. The right partition 21 can be provided separately or it can be formed by the right side panel of the engagement box 7. The right partition 21 separates the gripper 19 from the latch magazine 9. An electromagnet 20 is fixed on the side of the right partition 21 located on the side of the gripper 19. The latch drive device 8 can slide along the guide rail 17. The latch 14 can be pushed by the latch drive device 8, passing under the right partition 21 and the electromagnet 20, and entering the gripper 19. Then the gripper 19 moves from the open state to the semi-engaged state, thereby capturing the latch 14.

[0028] like Figure 6 As shown, a left partition 18 is provided between the locking engagement box 7 and the fixed base 4. The left partition 18 can be provided separately or it can be formed by the left side panel of the engagement box 7. The left partition 18 separates the gripper 19 from the fixed base 4. A guide 16 is fixed on the left partition 18 on one side of the fixed base 4. Since the opening height of the closed lock is small, the guide 16 can guide the steel strip 11 to be accurately inserted into the closed lock 14 during the threading process.

[0029] The structure of the bootloader 16 is as follows Figure 7 As shown, it has a main body 168, with an L-shaped fixing notch 167 formed on the rear wall 164 of the main body. Below the main body 168 is an arc-shaped central guide cavity 162. The central guide cavity 162 extends forward to form an open arc-shaped front guide plate 161, which extends to the space between the passive feed roller 53 and the active feed roller 51. The central guide cavity 162 extends rearward to form a closed, generally straight rear guide cavity 163. A fixing protrusion 183 corresponding to the L-shaped fixing notch 167 is provided on the left partition 18. The rear wall 164 of the guide 16 can be fixed to the fixing protrusion 183 by means of, for example, a bolt 165. This fixing protrusion 183 can simultaneously apply downward pressure and pressure towards the left partition to the guide 16, thus making the fixation more secure. An upper through hole 181 is provided on the left partition 18 at a position corresponding to the rear guide cavity 163, through which the rear guide cavity 163 can pass.

[0030] The front guide plate 161 is open, which facilitates the operation of the steel strip 11 and allows for inspection of the steel strip at the opening. The middle and rear guide cavities guide the steel strip 11 into the latch 14. To facilitate the entry of the steel strip 11 into the latch 14, the diameter (height) of the rear guide cavity 163 gradually decreases, with the smallest diameter at the outlet end 166 of the rear guide cavity 163, which faces the captured closed latch 14. The steel strip 11 passes sequentially through the front guide plate 161, the middle guide cavity 162, and the rear guide cavity 163, exits from the outlet end 166, and enters the latch 14.

[0031] After the steel strap 11 wraps around the item to be bundled once more, the head of the steel strap enters the bottom guide 42. The bottom guide 42 consists of two parts: a straight guide 421 and an inclined guide 422. The inclined guide 422 is located approximately below the guide 16, and its height gradually decreases. A lower through hole 182 is provided on the left partition 18 at a position corresponding to the inclined guide 422, through which the inclined guide 422 can pass. The end of the inclined guide 422 is directly opposite the captured closed latch 14. The inclined guide 422 guides the steel strap 11 to accurately pass into the closed latch 14 during the strap-threading process.

[0032] Next, combine Figure 8 , Figure 9 and Figure 10A The locking drive device 8 of the present invention is described in detail below. The locking drive device 8 has an upper push plate 82, and a lower slide plate 84 with an opening is fixed below the upper push plate 82. The upper push plate 82 and the lower slide plate 84 are fixedly connected and can be slidably mounted together in the guide rail 17. The front width of the upper push plate 82 gradually decreases to form a buckle portion 83. The width of the buckle portion 83 is smaller than the width of the lock 14, which facilitates the insertion of the buckle portion 83 into the lock 14, thereby achieving buckling. The rear of the upper push plate 82 is connected to the locking cylinder 87 via a transverse connecting block 81. The locking cylinder 87 can drive the upper push plate 82 and the lower slide plate 84 to slide together along the guide rail 17 via the transverse connecting block 81. The lower slide plate 84 can be positioned as close as possible to the buckle portion 83, which is beneficial for subsequent bending of the steel strip head. However, the lower slide plate 84 cannot exceed the buckle portion 83, as this would hinder the buckle portion 83 from performing the buckling action. An arc-shaped bending plate 85 is provided at the front end of the lower slide plate 84, facing the bite gripper 19, and an opening 86 is formed between the arc-shaped bending plate 85 and the upper push plate 82, through which the steel strip 11 can pass.

[0033] The following is combined Figures 10A to 10H The baling process of the baling machine of the present invention will be described.

[0034] exist Figure 10A The main components include a latch magazine 9, a bite gripper 19, a latch drive device 8, a right partition 21, and an electromagnet 20. Parts not shown in the diagram can be found in the reference section. Figures 1 to 9 Related views. Figure 10A The diagram shows an initial state in which the steel strip 11 has not yet entered the baler, the upper push plate 82 has retracted to its initial position, the buckle part 83 is outside the buckle magazine 9, and one of the buckles 14 in the buckle magazine 9 has fallen from the lower opening of the buckle magazine 9 onto the guide rail 17 under the action of gravity. The electromagnet 20 is not energized and therefore has no magnetism. The gripper 19 is in the initial zero position and is in the open state.

[0035] System startup, such as Figure 10B As shown, the locking cylinder 87 drives the upper push plate 82 to move forward along the guide rail 17 towards the gripper 19, and the latching part 83 is inserted into the closed latch 14. The locking cylinder 87 continues to operate, and the upper push plate 82 continues to move forward, as shown. Figure 10C As shown, after the buckle part 83 moves between the bite and gripper 19, the locking cylinder 87 stops operating, and the upper push plate 82 moves forward to its position. At this time, the upper push plate 82 is located below the locking magazine 9 and covers the lower opening of the locking magazine 9, so the locking buckle 14 will not fall out of the locking magazine 9.

[0036] After the push plate 82 moves forward to its position, as Figure 10D As shown, the bite drive motor starts, driving the bite 19 from the open state to the semi-engaged state. The opening of the bite 19 gradually decreases, and the distance between the bite 19s becomes smaller, until the bite 19 grabs the lock 14. At this time, the bite 19 is in the semi-engaged state, the bite 19 stops moving, and the lock 14 is captured by the bite 19, but is not locked in place.

[0037] After latch 14 is captured, as Figure 10E As shown, the locking cylinder 87 pushes the upper push plate 82 back to the first retraction position. In the first retraction position, the latch 83 disengages from the latch 14 and retracts to a position approximately below the electromagnet 20. The locking cylinder 87 then stops pushing back. In the first retraction position, the upper push plate 82 can guide the subsequently arriving steel strip 11 into the lower slide plate 84, thereby allowing the steel strip 11 to enter the bottom guide 42.

[0038] like Figure 10FAs shown, in the first retraction position, the electromagnet 20 is energized, and the steel strip 11 is drawn out from the storage device 13. The steel strip passes through the steel strip guide device 1, the steel strip pressing device 2, and the steel strip tensioning device 3 before entering the fixed base 4. Guided by the left partition 18, it enters between the passive feed roller 53 and the active feed roller 51. The active feed roller 51 rotates, feeding the steel strip 11 into the guide 16. After passing through the guide 16, it enters the latch 14. The steel strip 11 then passes out of the latch 14. Due to the action of the electromagnet 20, the electromagnet 20 will attract the head of the steel strip 11 that passes out of the latch 14, so that the head of the steel strip 11 can basically adhere to the lower surface of the upper push plate 82 and move forward. As the steel strip 11 moves, the steel strip 11 will pass through the opening 86 between the bending plate 85 and the upper push plate 82, and thus enter the lower slide plate 84.

[0039] Furthermore, to facilitate the entry of the steel strip 11 into the lower slide plate 84, the lower surface of the buckle portion 83 of the present invention has an inclined slope 831, which can extend approximately from the top of the buckle portion 83 to the opening 86. In this way, due to the guiding effect of the inclined slope 831, the head of the steel strip 11 passing through the buckle 14 will enter the lower slide plate 84 more easily.

[0040] See Figure 10G After the steel strip 11 enters the lower slide plate 84, the electromagnet 20 is de-energized. The steel strip enters the bottom guide 42 along the lower slide plate 84, is guided by the inclined guide 422, and passes through the buckle 14. Then the head of the steel strip passes out from the other side of the buckle 14. Since the electromagnet 20 is de-energized and there is an obstruction from the upper steel strip, the head of the steel strip 11 will move towards the arc-shaped part of the bending plate 85 under the action of gravity. After the head of the steel strip 11 abuts against the bending plate 85, the steel strip 11 moves into place, the active feed pulley 51 stops rotating, the steel strip 11 stops, and then the steel strip between the buckle 14 and the bending plate 85 will be bent in the opposite direction.

[0041] Furthermore, after the steel strip 11 enters the lower slide plate 84, the locking cylinder 87 further pushes the upper push plate 82 back to the second retraction position. In the second retraction position, the buckle part 83 retracts to a position approximately below the right partition plate 21, and the locking cylinder 87 stops pushing back. By retracting to the second retraction position, the distance between the locking buckle 14 and the bending plate 85 can be increased, thereby increasing the length of the steel strip that is bent in the reverse direction. This allows more steel strip to be bent in the reverse direction, which enables the bent part to withstand greater tension during subsequent tightening. At the same time, the longer reverse bending length is also beneficial for the bending of the steel strip.

[0042] After the steel belt 11 has moved into position, it can be clamped by the aforementioned clamping device, such as... Figure 10HAs shown, the locking cylinder 87 pushes the upper push plate 82 and the lower slide plate 84 forward, i.e., towards the locking buckle 14. During the movement, the bending plate 85 pushes the steel strip head to bend and move downwards towards the locking buckle 14, thus achieving bending. The arc-shaped bending plate 85 facilitates the movement of the steel strip head along the inner arc of the bending plate 85, thereby aiding in bending. After the buckle part 83 moves below the electromagnet 20, the upper push plate 82 stops operating, and the bending is completed.

[0043] After bending, the upper push plate 82 and the lower slide plate 84 remain stationary. At this time, the bending plate 85 will abut against the bent part of the steel strip, which further ensures that the bent part will not be pulled out from the lock 14 during the bundling process. The steel strip 11 is then tightened to secure the goods. For example, the steel strip 11 can be tightened using the tensioning mechanism 5 inside the fixed base 4. Due to the presence of the bent part, the steel strip 11 can withstand greater tension, thus securing the goods firmly. After the goods are secured, the buckle drive motor restarts, driving the gripper 19 from the open half-engaged state to the fully engaged state. The gripper 19 locks the lock, thus completing the bundling task.

[0044] After the baling task is completed, the steel strap 11 is cut, the bite drive motor drives the bite 19 to open, the bite 19 returns from the fully engaged state to the open state, the goods are transported away from the baler, and the locking cylinder 87 pushes the upper push plate 82 and the lower slide plate 84 back. Figure 10A As shown in the initial position, after the upper push plate 82 leaves the lower opening of the locking magazine 9, the next locking clip 14 falls from the lower opening of the locking magazine 9 onto the guide rail 17, and the baler returns to its original position. Figure 10A The initial state shown indicates that the bundling is in preparation for the next round of bundling.

[0045] As can be seen from the above description, the baling machine of the present invention can achieve automatic baling with closed locking mechanisms, resulting in secure bundling. Figure 11 As shown, the entire bundling process can generally include the following steps:

[0046] S100: The locking latch is pushed into the engagement mechanism by the locking drive device.

[0047] During this process, the gripper 19 opens, and after the latch is inserted through the buckle part 83, the latch is pushed into the gripper 19.

[0048] S200: The engagement mechanism captures the closing latch.

[0049] In this step, the open gripper 19 changes from the open state to the semi-engaged state, thereby capturing the lock.

[0050] S300: The latch drive device retracts to the first retraction position.

[0051] After retracting to the first retraction position, the buckle 83 disengages from the closing lock, preparing for subsequent belt conveying.

[0052] S400: Start belt feeding, guide the steel belt through the closing lock and then through the opening of the lock drive device.

[0053] This guiding process is mainly accomplished by the guide 16 and the electromagnet 20 to guide the steel strip head. The guide 16 enables the steel strip to pass accurately through the middle of the buckle, and the electromagnet 20 ensures that the steel strip head falls after passing through the buckle, so that the steel strip head can move forward along the lower surface of the upper push plate of the buckle drive device, thereby passing through the opening 86 between the bending plate 85 and the upper push plate 82.

[0054] S500: After the steel strap wraps around the object to be bundled once, guide the steel strap through the closing lock again.

[0055] After the steel strap wraps around the object to be bundled once, the steel strap 11 enters the bottom guide 42. With the help of the inclined guide 422 in the bottom guide 42, the head of the steel strap 11 passes through the buckle again.

[0056] S600: Bend the end of the steel strip that passes through the buckle toward the buckle to form a bent section.

[0057] This process is mainly achieved with the help of bending plate 85, which is pushed to bend the steel strip head toward the locking direction.

[0058] S700: Lock the buckle and secure it to complete the bundling.

[0059] After the steel strip is tightened, the buckle drive motor starts again, driving the bite 19 from the open half-engaged state to the fully engaged state. The bite 19 locks the buckle and completes the bundling task.

[0060] While the technology has been described and illustrated with respect to one or more embodiments, changes and / or modifications may be made to the illustrated examples without departing from the spirit and scope of the appended claims. In particular, with respect to the various functions performed by the aforementioned components or structures (components, devices, circuits, systems, etc.), the terminology used to describe such components (including references to “apparatus”) is intended to correspond to any component or structure performing the specified function of the described component (e.g., functionally equivalent), even if structurally not equivalent to the disclosed structure performing the function of the illustrated embodiments described herein, unless otherwise specified. Furthermore, while a particular feature may have been disclosed with respect to one of several embodiments, such feature may be combined with one or more other features in other embodiments as may be desired and advantageous for any given or particular application. Moreover, with regard to the use of the terms “comprising,” “including,” “having,” “containing,” “comprising,” or variations thereof in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “comprising.”

[0061] Many specific details have been set forth in the foregoing description to provide a thorough understanding of the present invention. However, the above description is merely a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A closed loop strap bundling machine characterized by, The device comprises a steel belt guiding device, a steel belt pressing device, a steel belt tensioning device and a fixed base arranged from top to bottom, a lock catch engaging box and a lock catch storage are arranged on one side of the fixed base, an electromagnet is installed between the lock catch engaging box and the lock catch storage, the closed lock catch is stored in the lock catch storage, a guide is arranged inside the fixed base, a bottom guide is arranged at the bottom of the fixed base, the lock catch is pushed into the engaging catch in the engaging box by a lock catch driving device, the engaging catch captures the lock catch in a half engaging state, the steel belt passes through the closed lock catch under the guidance of the guide, and enters the bottom guide from the opening of the lock catch driving device under the action of the electromagnet, the steel belt passes through the closed lock catch again through the bottom guide, a bending plate is arranged in the lock catch driving device, the head of the steel belt passing through the closed lock catch can be bent towards the lock catch to form a bending part, and the engaging catch changes from the half engaging state to a full engaging state to lock the closed lock catch after the steel belt is tensioned.

2. The steel banding machine of claim 1, wherein, A right partition plate is arranged between the lock catch storage and the lock catch engaging box, the right partition plate separates the engaging catch and the lock catch storage, and the electromagnet is fixed on one side of the right partition plate.

3. The steel strapping machine of claim 2 wherein, The lock catch driving device can slide along a guide rail, and the lock catch can pass through below the right partition plate and the electromagnet and enter the engaging catch under the pushing of the lock catch driving device.

4. The steel strapping banding machine of claim 1, wherein, A left partition plate is arranged between the lock catch engaging box and the base, the left partition plate separates the engaging catch and the base, and the guide is fixed on one side of the left partition plate.

5. The steel strapping machine of claim 4 wherein, The guide has a main body, an L-shaped fixed notch is formed in the rear wall of the main body, the main body has an arc-shaped middle guide cavity below, the middle guide cavity extends forward to form an open arc-shaped front guide plate, the front guide plate extends to between the driven belt pulley and the driving belt pulley in the base, and the middle guide cavity extends backward to form a closed flat rear guide cavity.

6. The steel strapping machine of claim 5 wherein, A fixed protrusion corresponding to the L-shaped fixed notch is arranged on the left partition plate, the rear wall of the guide is fixed on the fixed protrusion, an upper through hole is formed in the left partition plate at a position corresponding to the rear guide cavity, the rear guide cavity passes through the upper through hole, and the diameter of the rear guide cavity gradually decreases.

7. The steel strapping banding machine of claim 1, wherein, The lock catch driving device has an upper pushing plate, an open lower sliding plate is fixed below the upper pushing plate, and the upper pushing plate and the lower sliding plate can slide together along a guide rail.

8. The steel strapping machine of claim 7 wherein, The front width of the upper pushing plate gradually decreases to form an insertion buckle part, and the width of the insertion buckle part is smaller than the width of the lock catch.

9. The steel strapping banding machine of claim 7, wherein, An arc-shaped bending plate is arranged at the front end of the lower sliding plate and faces the engaging catch, and the opening for the steel belt to pass through is formed between the bending plate and the upper pushing plate.

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