Movable pulley buffering device of automatic packing machine

Abstract

The utility model discloses a movable pulley buffering device of an automatic packing machine, which belongs to the technical field of packing machines, and comprises a movable pulley, a rigid buffer and a flexible buffer, the two sides of the movable pulley are hinged with pulley seats, the rigid buffer and the flexible buffer are used for buffering the pulley seats, and a buffering plate is detachably connected above the rigid buffer through a connecting plate. Guide mechanisms used for guiding the connecting plate and the buffer plate are arranged on the two sides of the connecting plate. The flexible buffers are located at the positions, corresponding to the pulley seats, of the periphery of the buffer plate, and the tops of the flexible buffers are higher than the top of the buffer plate. Through the buffer plate, the pulley seat can be prevented from being in direct contact with the rigid buffer, so that the rigid buffer is prevented from being damaged; meanwhile, due to the fact that the buffering plate is made of the buffering pad, when the pulley base makes contact with the buffering plate, the buffering plate can play a certain buffering role at the same time, the force generated when the rigid buffer is impacted by the pulley base can be reduced, and therefore the rigid buffer is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of strapping machines, and particularly relates to a movable pulley buffer device for an automatic strapping machine. Background Art

[0002] The wire rod strapping machine is one of the important equipment in the finishing area of the high-speed wire production line. Currently, the most commonly used one is the horizontal automatic strapping machine. Each strapping machine is equipped with a set of wire towers, and each set of wire towers contains four sets of pulley groups, which supply wire to four strapping heads respectively.

[0003] The wire supply length of the wire rod strapping machine is much longer than that of the bar strapping machine. Therefore, the movable pulley has a large weight and a long vertical stroke, and the impact generated during the working process is also greater. However, the wire towers of the existing wire rod strapping machines all use the same rubber buffer as the wire towers of the bar strapping machines, resulting in a high failure rate and a short service life of the rubber buffer. In severe cases, the pin shaft of the movable pulley may break, affecting the normal operation of the wire rod strapping machine.

[0004] In the patent document with the publication number CN213109902U, a pulley buffer device for a wire rod strapping machine wire tower is provided, which includes a rigid buffer and a flexible buffer. The rigid buffer and the flexible buffer are both fixed on the ground and correspond to the bottom surface of the pulley seat of the movable pulley for the wire rod strapping machine wire tower. The flexible buffer is lower than the rigid buffer.

[0005] However, when the above patent is in use, the bottom of the pulley seat directly contacts the rigid buffer. After the contact times increase, the rigid buffer will be damaged. However, since the rigid buffer is fixed on the ground, it is not easy to replace after being damaged. Summary of the Utility Model

[0006] In order to solve the problem that the bottom of the pulley seat in the prior art directly contacts the rigid buffer, resulting in easy damage to the rigid buffer, the utility model provides a movable pulley buffer device for an automatic strapping machine. Before the pulley seat contacts the rigid buffer, it first contacts the buffer plate, avoiding direct contact between the pulley seat and the rigid buffer.

[0007] The technical solution adopted by the movable pulley buffer device for an automatic strapping machine of the utility model is as follows:

[0008] A movable pulley buffer device for an automatic strapping machine includes a movable pulley with pulley seats hinged on both sides, and a rigid buffer and a flexible buffer for buffering the pulley seats. A buffer plate made of a buffer pad is detachably connected above the rigid buffer through a connecting plate, and guiding mechanisms for guiding the connecting plate and the buffer plate are arranged on both sides of the connecting plate;

[0009] The flexible buffer is located around the buffer plate corresponding to the position of the pulley seat, and the top of the flexible buffer is higher than the top of the buffer plate.

[0010] A further improvement of the technical solution of the present utility model lies in that both sides of the movable pulley are connected to the corresponding pulley seats through rotating shafts, and each pulley seat is arranged in an inverted "convex" shape.

[0011] A further improvement of the above technical solution of the present utility model lies in that a connection groove for connecting with the buffer plate is provided at the upper part of the connecting plate, and a connection block matching with the connection groove is fixedly arranged at the bottom of the buffer plate corresponding to the position of the connection groove.

[0012] A further improvement of the above technical solution of the present utility model lies in that a first connection hole penetrating the connection groove is provided along the length direction of the connecting plate, and a second connection hole matching with the first connection hole is provided along the length direction of the connection block.

[0013] A further improvement of the technical solution of the present utility model lies in that it further includes a base provided with a groove, a rigid buffer is vertically arranged in the groove, and a flexible buffer is arranged on the top of the base and on both sides of the groove and is on the same vertical plane as the corresponding pulley seat.

[0014] A further improvement of the above technical solution of the present utility model lies in that the guiding mechanism includes sliding grooves vertically provided on the opposite inner walls of the groove, and a slider connected to the connecting plate is slidably arranged in each sliding groove.

[0015] A further improvement of the above technical solution of the present utility model lies in that a vertical spring rod is fixedly arranged in each sliding groove; wherein, the top end of the spring rod is fixedly connected to the bottom of the slider in the corresponding sliding groove, and the bottom end of the spring rod is fixedly connected to the bottom of the corresponding sliding groove.

[0016] A further improvement of the above technical solution of the present utility model lies in that a plurality of vertical hydraulic rods are fixedly arranged at the bottom of the base; wherein, the piston rod of the hydraulic rod is fixedly connected to the bottom of the base, and an anti-slip pad is fixedly connected to the bottom of the cylinder body of the hydraulic rod.

[0017] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model includes:

[0018] By arranging the buffer plate, the present utility model can prevent the pulley seat from directly contacting the rigid buffer, thereby preventing the rigid buffer from being damaged; at the same time, since the buffer plate is made of a buffer pad, when the pulley seat contacts the buffer plate, the buffer plate can also play a certain buffering role, which can reduce the force when the rigid buffer is impacted by the pulley seat, thereby playing a protective role for the rigid buffer.

[0019] In the present utility model, the buffer plate is detachably connected to the connecting plate through the connection groove and the connection block, so that when the buffer plate is damaged, it is convenient to remove the buffer plate from the connecting plate and replace it with a damaged buffer plate.

[0020] In the present utility model, through the provided guiding mechanism, when the pulley seat impacts the buffer plate and causes the buffer plate, the connecting plate and the rigid buffer to move downward, the connecting plate can be guided to prevent the connecting plate and the buffer plate from tilting and jamming in the groove during the movement.

[0021] In the present utility model, since the top of the flexible buffer is higher than the top of the buffer plate, the inverted "convex"-shaped pulley seat contacts the flexible buffer while contacting the buffer plate. Therefore, through the mutual cooperation of the flexible buffer, the rigid buffer and the buffer plate, a better buffering effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a movable pulley buffering device of an automatic bundling machine of the present utility model;

[0023] Figure 2 is a schematic connection structure diagram of a movable pulley and a pulley seat of a movable pulley buffering device of an automatic bundling machine of the present utility model;

[0024] Figure 3 is a schematic cross-sectional structure diagram of a base in an absorption tower of a movable pulley buffering device of an automatic bundling machine of the present utility model;

[0025] Figure 4 is a movable pulley buffering device of an automatic bundling machine of the present utility model Figure 3 exploded structure diagram of the buffer plate and the connecting plate.

[0026] In the drawings: 1, movable pulley; 11, rotating shaft; 12, pulley seat;

[0027] 2, rigid buffer; 3, flexible buffer;

[0028] 4, connecting plate; 41, connecting groove; 42, first connection hole;

[0029] 5, buffer plate; 51, connecting block; 52, second connection hole;

[0030] 6, guiding mechanism; 61, sliding groove; 62, sliding block; 63, spring rod;

[0031] 7, base; 71, groove; 72, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. In the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0033] First, refer to Figure 1 , according to Figure 1 , it can be known that the utility model includes a movable pulley 1 for tightening the packing belt. Both sides of the movable pulley 1 are provided with pulley seats 12, and a base 7 is arranged below the movable pulley 1 corresponding to the positions of the movable pulley 1 and the pulley seats 12. A groove 71 is opened in the upper part of the base 7, and a rigid buffer 2 is arranged in the groove 71. A buffer plate 5 made of a buffer pad is detachably connected above the rigid buffer 2. The buffer plate 5 can specifically adopt a rubber plate commonly used in the prior art. At the same time, flexible buffers 3 are arranged at the bottom of the base 7 on both sides of the groove 71 and aligned with both sides of the pulley seats 12.

[0034] When the movable pulley 1 in the utility model is specifically arranged, it can refer to Figure 2 , according to Figure 2 , it can be known that both sides of the movable pulley 1 are hinged with pulley seats 12 through rotating shafts 11, and each pulley seat 12 is in an inverted "convex" shape.

[0035] The rigid buffer 2 in the utility model can adopt a buffer spring commonly used in the prior art. When the buffer spring is connected to the buffer plate 5, it can refer to Figure 3 and Figure 4 , according to Figure 3 and Figure 4 , it can be known that a horizontal connecting plate 4 is fixedly connected to the top of the buffer spring. The connecting plate 4 can be welded to the top of the buffer spring. A connecting groove 41 is opened at the center position of the connecting plate 4. At the same time, a first connecting hole 42 penetrating through the connecting groove 41 is opened along the length axis direction of the connecting plate 4. Continuing to refer to Figure 3 and Figure 4 , it can be known that a connecting block 51 matching the connecting groove 41 is fixedly connected to the bottom of the buffer plate 5 corresponding to the position of the connecting groove 41. A second connecting hole 52 penetrating through the connecting block 51 and matching the first connecting hole 42 is opened along the length axis direction of the connecting block 51. The buffer plate 5 is connected to the connecting plate 4. The connecting block 51 on the buffer plate 5 can be placed in the connecting groove 41 of the connecting plate 4. At this time, the first connecting hole 42 and the second connecting hole 52 are communicated. Then, a pin shaft is inserted into the first connecting hole 42 and the second connecting hole 52, so that the buffer plate 5 and the connecting plate 4 are connected together through the pin shaft.

[0036] In the utility model, in order to facilitate inserting the pin shaft into the first connecting hole 42 and the second connecting hole 52, refer to Figure 1 , through holes 72 communicating with the groove 71 are opened in the upper parts of the left and right sides of the base 7, so as to insert the pin shaft into the first connecting hole 42 and the second connecting hole 52 through the through holes 72.

[0037] In the present utility model, in order to prevent the connecting plate 4 and the buffer plate 5 from getting stuck in the groove 71 when moving up and down, a guiding mechanism 6 for guiding the connecting plate 4 and the buffer plate 5 is provided in the groove 71. When specifically setting the guiding mechanism 6, reference can continue to be made to Figure 3 and Figure 4 , according to Figure 3 and Figure 4 it can be known that the guiding mechanism 6 includes sliding grooves 61 vertically opened on the front and rear inner walls of the groove 71. A slider 62 fixedly connected to the connecting plate 4 is slidably connected in each sliding groove 61. At the same time, a vertical spring rod 63 is fixedly provided in each sliding groove 61. The top end of the spring rod 63 is fixedly connected to the bottom of the slider 62, and the bottom end of the spring rod 63 is fixedly connected to the bottom of the corresponding sliding groove 61.

[0038] In the present utility model, the flexible buffer 3 can adopt the commonly used polyurethane buffer in the prior art. Specifically, the flexible buffer 3 is arranged at the top of the front and rear sides of the base 7 and is aligned with the front and rear sides of the movable pulley 1.

[0039] In the present utility model, in order to facilitate the movement of the present utility model and the adjustment of its height, a plurality of vertical hydraulic rods (not shown in the figure) are fixedly connected to the bottom of the base 7. Among them, the piston rod of each hydraulic rod is fixedly connected to the bottom of the base 7, and an anti-slip pad is fixedly connected to the bottom of the cylinder body of each hydraulic rod.

[0040] The working principle of the movable pulley buffer device of the automatic strapping machine in this embodiment is as follows: Before using the present utility model, first connect the buffer plate 5 and the connecting plate 4 together with a pin shaft, and then move the present utility model to a suitable position and adjust it to a suitable height by a forklift.

[0041] When the present utility model is in use, the movable pulley 1 drives the pulley seat 12 to move downward. When the middle position of the pulley seat 12 contacts the buffer plate 5, the front and rear sides of the pulley seat 12 contact the flexible buffer 3 at the same time; as the movable pulley 1 continues to move downward, the pulley seat 12 will cause the flexible buffer 3 and the buffer plate 5 to move downward. When the buffer plate 5 moves downward, it will drive the connecting plate 4 to move downward in the groove 71, so that the rigid buffer 2 is compressed. When the connecting plate 4 moves downward, it will drive the slider 62 to move downward in the sliding groove 61. With the mutual cooperation of the flexible buffer 3, the buffer plate 5 and the rigid buffer 2, the pulley seat 12 can be buffered and braked, so that the movable pulley 1 is braked.

[0042] When the movable pulley 1 drives the pulley seat 12 to move upward, the flexible buffer 3, the buffer plate 5, the connecting plate 4, the rigid buffer 2 and the slider 62 will automatically return to their original positions, so as to facilitate the present utility model to buffer the continuously moving up and down movable pulley 1.

[0043] When the buffer plate 5 is damaged, the pin shafts in the first connection hole 42 and the second connection hole 52 can be removed through the through hole 72, and then the damaged buffer plate 5 can be removed and a new buffer plate 5 can be installed.

[0044] In the above embodiment, the present utility model provides an automatic baler movable pulley buffer device. By providing the buffer plate, it can prevent the pulley seat from directly contacting the rigid buffer, thereby preventing the rigid buffer from being damaged. At the same time, since the buffer plate is made of a buffer pad, when the pulley seat contacts the buffer plate, the buffer plate can also play a certain buffering role, which can reduce the impact force on the rigid buffer when the pulley seat impacts the rigid buffer, thus playing a protective role for the rigid buffer.

[0045] The above-described embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope of the present utility model. The technical content claimed by the present utility model has been fully recorded in the claims.

Claims

1. An automatic packing machine movable pulley buffer device, comprising a movable pulley (1) with pulley seats (12) hinged on both sides, and a rigid buffer (2) and a flexible buffer (3) for buffering the pulley seats (12), characterized in that: Above the rigid buffer (2), a buffer plate (5) made of a buffer pad is detachably connected through a connecting plate (4), and guiding mechanisms (6) for guiding the connecting plate (4) and the buffer plate (5) are arranged on both sides of the connecting plate (4); The flexible buffer (3) is located at the positions corresponding to the pulley seats (12) around the buffer plate (5), and the top of the flexible buffer (3) is higher than the top of the buffer plate (5).

2. The automatic packing machine movable pulley buffer device according to claim 1, wherein: Both sides of the movable pulley (1) are connected to the corresponding pulley seats (12) through rotating shafts (11), and each pulley seat (12) is arranged in an inverted "convex" shape.

3. The automatic strapping machine movable pulley buffer device according to claim 1, characterized in that: A connecting groove (41) connected to the buffer plate (5) is formed in the upper part of the connecting plate (4), and a connecting block (51) matching the connecting groove (41) is fixedly arranged at the bottom of the buffer plate (5) corresponding to the position of the connecting groove (41).

4. The automatic packing machine movable pulley buffer device according to claim 3, characterized in that: A first connecting hole (42) penetrating through the connecting groove (41) is formed in the connecting plate (4) along its length direction, and a second connecting hole (52) matching the first connecting hole (42) is formed in the connecting block (51) along its length direction.

5. The automatic packing machine movable pulley buffer device according to claim 1, characterized in that: It further includes a base (7) provided with a groove (71). The rigid buffer (2) is vertically arranged in the groove (71), and the flexible buffer (3) is arranged on the top of the base (7) and on both sides of the groove (71) and is on the same vertical plane as the corresponding pulley seat (12).

6. The automatic packing machine movable pulley buffer device according to claim 5, characterized in that: The guiding mechanism (6) includes sliding grooves (61) vertically formed on the opposite inner walls of the groove (71), and a slider (62) connected to the connecting plate (4) is slidably arranged in each sliding groove (61).

7. An automatic packing machine movable pulley buffer device according to claim 6, characterized in that: A vertical spring rod (63) is fixedly arranged in each sliding groove (61); wherein, the top end of the spring rod (63) is fixedly connected to the bottom of the slider (62) in the corresponding sliding groove (61), and the bottom end of the spring rod (63) is fixedly connected to the bottom of the corresponding sliding groove (61).

8. An automatic packaging machine movable pulley buffer device according to claim 5, characterized in that: A plurality of vertical hydraulic rods are fixedly arranged at the bottom of the base (7); wherein, the piston rod of the hydraulic rod is fixedly connected to the bottom of the base (7), and an anti-slip pad is fixedly connected to the bottom of the cylinder body of the hydraulic rod.

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