CN1314566C - The pressing device of the medium and wide band automatic baler - Google Patents

Abstract

The invention relates to a pressing device of a medium and wide band automatic baler, the structure of which mainly includes a pressing arm support, the two ends of the pressing arm support are connected with a pressing arm through a rotating shaft, and the lower end of the pressing arm is provided with a There is a pressing wheel, a pressing arm transmission mechanism is arranged in the middle of the pressing arm bracket, and a belt supporting mechanism is arranged inside the pressing arm. The pressing arm transmission mechanism includes a cylinder, an active rack connected with the piston rod of the cylinder, a double gear and a passive rack, the passive rack is connected with one end of the connecting rod, and the other end of the connecting rod is connected with the pressing arm. Connected to the pin shaft. The belt-supporting mechanism includes a small cylinder, a push-pull rod, a small connecting rod and a belt-supporting hook sequentially connected to the piston rod. The invention can automatically calibrate the center of the steel coil, and has the characteristics of reliable tightening and sealing, preventing the steel belt from slipping, beautiful bundling appearance, etc., and is especially suitable for bundling around the outer ring of medium and wide band (including wide band) coils.

Description

The pressing device of the medium and wide band automatic baler

technical field

The invention relates to a metallurgical automatic packaging mechanical equipment, in particular to a compacting device of a medium and wide band strapping machine.

Background technique

At present, the steel coil bundling equipment generally adopts the belt threading frame structure and the friction wheel to convey the strap. This structure requires a lot of power, high failure rate, large and complex structure, and the friction wheel is easy to wear, and the maintenance cost is high. After the friction wheel is worn, it is easy to cause slippage when the strap is tightened and the strap cannot be tightened. In addition, before the steel coil is bundled, its tail is tilted and the outermost 1-2 turns are loose. Often, it cannot be completely restored to the tight state by directly tightening the straps, which may easily cause loose baling and loose bales. In order to solve this problem, the applicant proposed the medium and wide band automatic strapping machine technology in another published patent application (patent application number: 200310109981.5). However, this technology adopts a single-arm and single-wheel pressing device, which is easy to cause: when the steel coil is positioned incorrectly, that is, when the longitudinal or lateral deviation from the bundling center, its rolling function is difficult to perform normally, and the bundling is not tight, especially when the offset When it is too large, it is easy to cause the sealing action to fail.

Contents of the invention

Aiming at the above-mentioned problems, the present invention provides a pressing device for a wide-band automatic strapping machine with two arms and four wheels, so as to automatically align the center of the steel coil, which is beneficial to the purpose of tightening and sealing. For this reason, the present invention proposes following technical scheme:

The pressing device of the wide-band automatic strapping machine in the present invention includes a power box assembly, a belt-feeding arm assembly and a pressing arm connected with the power output shaft on the power box assembly The two ends of the pressing arm bracket are connected with the pressing arm through the rotating shaft, and the lower end of the pressing arm is provided with a pressing wheel; the middle part of the pressing arm bracket is provided with a pressing arm transmission mechanism, and the inner side of the pressing arm is provided with a belt mechanism. The pressing arm transmission mechanism includes a cylinder arranged on both sides of the pressing arm bracket, the piston rod of the cylinder is equipped with an active rack, the inner side of the active rack is connected with the large end of the double gear, and the small end of the double gear A passive rack is connected, and the passive rack is connected with one end of the connecting rod, and the other end of the connecting rod is connected with a pin arranged on the pressing arm. Limiting wheels are arranged on the outer sides of the active rack and the passive rack.

The belt support mechanism includes a small cylinder located on the inner support of the pressing arm. The piston rod of the small cylinder is connected with a push-pull rod, a small connecting rod and a belt hook in sequence. The belt hook is located on the same side of the pressing arm. Between the two pressing rollers on the side, a thrust rod is arranged on the fixed seat installed on the inner side of the pressing arm, a compression spring is arranged between the inner side of the pressing arm and the thrust rod, and a fixed stop pin is arranged at the lower end of the pressing arm. The lower end of the belt hook is curved, and the fixed stop pin corresponds to the bend of the belt hook.

Compared with the compacting device of the medium and wide band automatic strapping machine in the prior art, the compacting device of the broadband automatic strapping machine in the present invention adopts a double-arm four-wheel compacting structure, when the steel coil stops between the compacting arm supports Next, when there is an offset from the bundling center, during the pressing process, one or two of the four pressing wheels first contact the steel coil and rotate along the outer surface of the steel coil. Under the action of the tight arm cylinder, the other rollers are also in contact with the steel coil one by one, the steel coil does not move, and the power box assembly floats back and forth, left and right, so as to automatically calibrate the center of the steel coil, so that it has a good tightening and sealing Effect. At the same time, due to the adoption of the supporting belt mechanism, it works just after the four pressing rollers are rolled and tightened, and the belt feeding arm circles the steel coil for a week to complete the belt feeding, thus preventing the steel belt from sliding down before tensioning, not only Its appearance is beautiful, and it makes the baling tighter.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the front view of the pressing device of the wide band automatic strapping machine in the present invention.

Fig. 2 is a top view of the pressing device of the wide band automatic strapping machine in the present invention.

Fig. 3 is the front view of the belt support mechanism of the pressing device of the wide-band automatic strapping machine in the present invention.

Detailed ways

As shown in Figures 1 and 2, in the pressing device of the wide-band automatic strapping machine in the present invention, the mid-band and wide-band automatic strapping machine includes a power box assembly 1, a belt feeding arm assembly 2 and a power box assembly The compression arm support 4 that is connected with the power take-off shaft 6 on the 1. The two ends of described pressing arm support 4 are provided with rotating shaft 3, are connected with pressing arm 15 on rotating shaft 3, and the lower end of each end pressing arm 15 is provided with pressing roller 20 respectively. The middle part of the pressing arm support 4 is provided with a pressing arm transmission mechanism, and the pressing arm transmission mechanism includes two cylinders 5 respectively arranged on both sides of the pressing arm support 4 . Active racks 8 are respectively housed on the piston rods of these two cylinders 5, and the inboards of the two active racks 8 are respectively connected with the big ends of the dual gears 7, and the small ends of the dual gears 7 are connected with corresponding two gears. Two active racks 8 are perpendicular to two passive racks 9, one end of a connecting rod 11 is connected to the passive racks 9, and the other end of the connecting rod 11 is connected with a pin 14 arranged on a pressing arm 15. The outer side of the driving rack 8 is provided with a limiting wheel 23 , and the outer side of the passive rack 9 is provided with a limiting wheel 22 . The inboard of pressing arm 15 is provided with supporting belt mechanism, and as shown in Figure 3, this supporting belt mechanism comprises two small cylinders 10 that are arranged on the inner support of pressing arm 15, and the piston rod of small cylinder 10 is connected successively. There is a push-pull rod 12, a small connecting rod 13 and a belt hook 18, and the belt hook 18 is located between the two pressing rollers 20 on the same side of the pressing arm 15. A thrust rod 17 is arranged on the fixed seat 24 installed on the inside of the compression arm 15, and a compression spring 16 is provided between the inside of the compression arm 15 and the thrust rod 17. The lower end of the compression arm 15 is provided with a fixed stop pin 19, and the fixed stop Pin 19 corresponds to the bend of belt hook 18 .

The working principle of the present invention is:

The two cylinders 5 arranged on both sides of the pressing arm bracket 4 move synchronously. The active rack 8 drives the dual gear 7 to rotate, and the passive rack 9 connected to the dual gear 7 drives the connecting rod 11 to move. The rod 11 drives the pressing arm 15 to rotate around the rotating shaft 3 through the pin shaft 14 connected thereto, so that the pressing wheel 20 is pressed toward or away from the steel coil 21 .

Two small air cylinders 10 arranged on the inner side support of the pressing arm 15 can drive the belt hook 18 with a bent lower end to move up and down. Open under the effect of pin 19; Another function of the compression spring 16 is to make the belt hook 18 to be close to the outer surface of the steel coil 21 when the belt is supported, and to make the belt hook 18 float within a certain range according to the steel coils 21 of different bundle diameters.

Claims (4)

1. A pressing device for a medium and wide band automatic strapping machine, said medium and wide band automatic strapping machine includes a power box assembly (1), a belt feeding arm assembly (2) and a power box assembly (1) The pressing arm bracket (4) connected with the power output shaft (6) on the upper part is characterized in that: the two ends of the pressing arm bracket (4) are connected with the pressing arm (15) through the rotating shaft (3), and the pressing arm The lower end of the arm (15) is provided with a pressing wheel (20), the middle part of the pressing arm support (4) is provided with a pressing arm transmission mechanism, and the inner side of the pressing arm (15) is provided with a supporting belt mechanism; the pressing arm The transmission mechanism includes cylinders (5) arranged on both sides of the pressing arm bracket (4), the piston rod of the cylinder (5) is equipped with a driving rack (8), and the inner side of the driving rack (8) is connected with the duplex gear (7). ), the small end of the duplex gear (7) is connected with a passive rack (9), the passive rack (9) is connected with one end of the connecting rod (11), and the other end of the connecting rod (11) A pin shaft (14) arranged on the pressing arm (15) is connected. 2. The pressing device of the medium and wide band automatic strapping machine according to claim 1, characterized in that: the belt support mechanism includes a small cylinder (10) arranged on the inner support of the pressing arm (15), The piston rod of the small cylinder (10) is successively connected with a push-pull rod (12), a small connecting rod (13) and a belt hook (18). Between the pressing rollers (20), a thrust rod (17) is provided on the fixed seat (24) installed on the inner side of the pressing arm (15), and a Compress the spring (16), and the lower end of the compression arm (15) is provided with a fixed stop pin (19). 3. The pressing device of the medium and wide band automatic baler according to claim 1, characterized in that: the outer side of the active rack (8) is provided with a limit wheel (23), and the outer side of the passive rack (9) Be provided with limit wheel (22). 4. The pressing device of the medium and wide band automatic strapping machine according to claim 2, characterized in that: the lower end of the support hook (18) is curved, and the fixed stop pin (19) corresponds to the support hook ( 18) Bends.

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