Bag pushing device

Abstract

The invention discloses a bag pushing device, which comprises a track plate, a bag pushing device, a bag pushing device, a bag pushing device and a bag pushing device, wherein the track plate is provided with an upper track surface and a lower track surface; the bag pushing actuating part comprises a seat assembly and a lower cantilever, and the seat assembly comprises a seat frame, and a lower roller group and an upper roller group which are mounted on the seat frame; wherein upper rollers in the upper roller group are jointed with the upper track surface, and lower rollers in the lower roller group are jointed with the lower track surface; a driving device; the seat assembly further comprises a pre-tightening adjusting device used for adjusting the upper rolling wheel set and / or the lower rolling wheel set in the vertical direction so as to adjust the pre-pressure between the upper rolling wheel set and / or the lower rolling wheel set and the track plate. The bag pushing device is compact in structure, and the bag pushing precision is easy to guarantee.

Description

Technical Field

[0001] The invention relates to a bag pusher. Background Art

[0002] The baler on the cotton bale processing production line needs to cover the cotton bales after baling. At present, the covering of bales is gradually shifting from manual covering to machine covering. The main component used in machine covering is the cover, which includes a roughly rectangular tube or a shell equivalent to a rectangular tube. Among them, the shell equivalent to a rectangular tube is relatively widely used. This type of shell can include a left shell and a right shell. A given distance is left between the left upper shell plate of the left shell and the right upper shell plate of the right shell, so that the pusher can intervene in the shell.

[0003] Regarding the design of the bale pusher, the first thing to consider is the distance that the bale pusher can push the cotton bale. As mentioned above, the bale pusher with a shell equivalent to a rectangular tube often has higher requirements on the pushing distance of the bale pusher.

[0004] In addition, it should be known that the cotton bale loading platform is often located at the rear side of the bale cover (with the bale pushing direction as the forward direction), and the cotton bales are generally loaded in a horizontal loading manner.

[0005] One of the most common bale pushers currently has an actuating assembly with a multi-stage cylinder structure. The actuating assembly of this type of bale pusher is set at the tail end of the bale pusher bracket. In order to obtain sufficient stroke, the number of stages of the multi-stage cylinder is usually more than three (i.e., it includes a cylinder barrel and three sleeves). The typical feature of the multi-stage cylinder is that the cylinder body part will occupy a large space, that is, when all the sleeves are retracted into the cylinder barrel, they will still occupy a large space, and the size of the occupied space will be greater than the length of the cylinder barrel (after the sleeve is retracted, part of it will be exposed outside the cylinder barrel). In addition, if the bale pusher is simply used for bale wrapping, the bale pusher with a multi-stage cylinder structure can better meet the functional requirements, but in more implementations, the bale pusher often has multiple stroke sections to meet the needs of transporting the cotton bales to multiple stations of the bale wrapping process in a pushing manner. This transportation method is difficult to achieve using a multi-stage cylinder.

[0006] In order to make the structure more compact, in some implementations, the actuating assembly of the bale pusher is configured above the bale conveying platform. Specifically, a longitudinal beam is provided above the bale conveying platform, and the actuating assembly is installed on the longitudinal beam. The actuating assembly includes a carriage coupled to the longitudinal beam through a track pair. A pushing arm extends downward from the carriage and reaches the middle in the height direction of the bale. In this way, in the bale conveying direction, the size of the actuating assembly can be relatively compact. However, for such a bale pusher, since the pushing arm is arranged in a downward overhanging manner, when the pushing arm pushes the bale forward, the force of the bale acting on the pushing arm will cause a relatively large torque to be borne at the root of the pushing arm. And the track pair generally adopts a roller track pair with a relatively large clearance. When pushing the bale, the pushing arm will generate a relatively large backward tilt angle, making the difficulty of pushing the bale relatively large and also greatly affecting the accuracy of the bale in place. Summary of the Invention

[0007] The object of the present invention is to provide a bale pusher with a compact structure and easy to ensure bale pushing accuracy.

[0008] In an embodiment of the present invention, a bale pusher is provided, including: A bracket having a bale pushing longitudinal beam, the bale pushing longitudinal beam including a track plate extending along the bale pushing longitudinal beam, the track plate having an upper track surface and a lower track surface; A bale pushing actuating part, including a seat assembly and a lower cantilever for bale pushing. The seat assembly includes a seat frame and a lower roller group and an upper roller group installed on the seat frame. The upper roller group has at least a pair of upper rollers at the front and rear ends of the seat frame, and the lower roller group has at least a pair of lower rollers at the front and rear of the seat frame. Among them, the upper rollers in the upper roller group are engaged with the upper track surface, and the lower rollers in the lower roller group are engaged with the lower track surface; and A driving device for driving the bale pushing actuating part to run along the track plate; Among them, a pre-tightening adjustment device for adjusting the upper roller group and / or the lower roller group in the up and down direction is further included on the seat assembly to adjust the pre-pressure between the upper roller group and / or the lower roller group and the track plate.

[0009] Optionally, the adjustment device is configured as: The first form, the upper roller and / or the lower roller are installed on corresponding roller seats. The seat frame provides a first guiding part for guiding the roller seats in the up and down direction, and a first locking component is provided to lock the roller seats to the first guiding part after the roller seats are adjusted in place on the first guiding part; The second form, the upper roller group is co-framed, the lower roller group is co-framed, and the co-framed body is a co-framed body that moves up and down. The seat frame provides a second guiding part in the up and down direction for the co-framed body, and a second locking component is provided to lock the co-framed body to the second guiding part after the co-framed body is adjusted in place on the second guiding part; or In the third form, the upper roller and / or the lower roller has a roller shaft, and the corresponding roller is installed at one end of the roller shaft, and a limit head is provided at the other end of the roller shaft; the seat frame provides an elongated hole that serves as a roller shaft seat hole and extends in the up and down direction, and the provided roller shaft is horizontally passed through the elongated hole; an adjusting screw hole is correspondingly opened on the upper wall or the lower wall of the elongated hole, and an adjusting screw is provided for adjusting the up and down position of the roller shaft in the elongated hole.

[0010] Optionally, the seat frame is provided with a side arm plate on each of the left and right sides that are symmetrically arranged with each other in the left and right directions; In the third form, the elongated hole is provided on the side arm plate; The adjusting screw hole is a through hole from the upper plate surface of the side arm plate to the elongated hole.

[0011] Optionally, the seat frame is provided with a set of side rollers on each of the left and right sides corresponding to the track plate; Correspondingly, the left and right plate surfaces of the track plate constitute the raceways of the side rollers.

[0012] Optionally, the lower cantilever includes: A vertical arm body, fixedly connected to the seat frame and extending downwardly; An actuating arm, fixedly connected to the lower end of the vertical arm body and extending forwardly.

[0013] Optionally, a bag mouth support plate is provided on the upper side of the actuating arm to support the upper bag surface of the bag mouth of the cotton bale bag after the pushed cotton bale completely enters the cotton bale bag.

[0014] Optionally, the bag mouth support plate includes a horizontal portion and a transition connecting portion; Wherein, the rear end of the horizontal portion is connected to the front side of the vertical arm body, and the front end is connected to the front end of the actuating arm through the transition connecting portion; The horizontal portion is parallel to the actuating arm.

[0015] Optionally, a reinforcing plate is provided between the upper side of the actuating arm and the front side of the vertical arm body; A vertical push plate is provided at the front end of the actuating arm, and the push plate is perpendicular to the actuating arm.

[0016] Optionally, the seat frame includes left and right connecting side plates and a cross plate for connecting the left and right connecting side plates to form a rectangular frame; The upper end of the lower cantilever is located within the rectangular frame and is fixedly connected to the left and right connecting side plates.

[0017] Optionally, the cross plate and the upper end of the lower cantilever are connected by a reinforcing inner plate.

[0018] Optionally, the driving device is a chain drive mechanism, and the sprockets of the chain drive mechanism are arranged at both ends of the bracket corresponding to the track plate; The chain of the chain drive mechanism forms a chain loop through the seat frame.

[0019] Optionally, a chain block seat is provided at each of the front and rear ends of the seat frame in the front-rear direction, and the upper surface or the lower surface of the chain block seat has a convex block or a groove; The chain connection end has a fixed seat plate, and the fixed seat plate is accommodated in the groove or the convex block serves as a stop block in the direction of the chain pulling force. The groove or the convex block is used to bear the pulling force of the chain.

[0020] The pusher according to the embodiment of the present invention belongs to a pusher with a lower cantilever. At this time, the driving device of the pusher is arranged above the pushing platform, occupying relatively less space in the front-rear direction of the pushing platform, and the overall structure is relatively compact. In order to solve the problem that when the lower cantilever is configured, the torque received by the pushing actuating part is relatively large, resulting in an angular position of the cantilever and relatively low accuracy of the pushing in place, in the embodiment of the present invention, a longitudinally extending track plate is provided. The track plate has an upper track surface and a lower track surface, and the pushing actuating part is correspondingly provided with an upper roller set and a lower roller set. Among them, the upper roller set runs on the upper track surface, and the lower roller set runs on the lower track surface, which is equivalent to clamping the track plate between the upper and lower roller sets. Furthermore, the seat assembly of the pushing actuating part is adapted to one or both of the two roller sets to be provided with a pre-tightening adjustment device for adjusting in the up-down direction. By means of this pre-tightening adjustment device, a given pre-pressure is provided between the two roller sets and the track plate, which is used to eliminate the fitting clearance between the roller and the track, as well as the clearance of the corresponding movable parts. Thus, the state change of the lower cantilever during pushing can be relatively small, and the pushing accuracy can be relatively more easily guaranteed. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the installation state of the pusher on the main frame of the bag-sealing and bag-packing system in an embodiment.

[0022] Figure 2 It is a schematic diagram of the left rear downward three-dimensional structure of the pushing actuating part of the pusher in an embodiment.

[0023] Figure 3 It is a schematic diagram of the left front downward three-dimensional structure of the pushing actuating part of the pusher in an embodiment.

[0024] Figure 4 It is a schematic diagram of the structure of the crank arm assembly in an embodiment.

[0025] Figure 5 It is a schematic diagram of the structure of the side arm plate in an embodiment.

[0026] Figure 6 It is a schematic diagram of the structure of the first chain block in an embodiment.

[0027] Figure 7Schematic diagram of the guiding bearing structure in an embodiment.

[0028] Figure 8 Schematic diagram of the cam bearing follower structure in an embodiment.

[0029] Figure 9 Schematic left view structure diagram of the bag pusher in an embodiment.

[0030] In the figure: 1. Tensioning device, 2. Bag pushing actuating part, 3. Bag pushing longitudinal beam, 4. Connecting beam, 5. Gantry, 6. Supporting bottom frame, 7. Motor-reducer integrated machine.

[0031] 21. Rocker arm assembly, 22. Fixed screw, 23. Side arm plate, 24. First link block, 25. Cam bearing follower, 26. Guiding bearing, 27. Adjusting screw, 28. Second link block.

[0032] 211. Rocker arm, 212. Reinforcing plate, 213. Connecting side plate, 214. First link block seat, 215. Reinforcing inner plate, 216. Second link block seat, 217. Bag mouth support plate, 218. Pushing plate.

[0033] 231. Fixed hole, 232. Round shaft hole, 233. Long-shaped shaft hole, 234. Adjusting screw hole, 235. Pin shaft hole, 236. Pin shaft seat.

[0034] 241. Connecting hole, 242. Connecting plate, 243. Fixed seat plate, 244. Fixed seat hole.

[0035] 251. Locking nut, 252. Wheel shaft, 253. Roller.

[0036] 261. Shaft passing hole. Detailed implementation manner

[0037] To understand the present invention more clearly, the working object of the bag pusher will be described first below.

[0038] Figure 1 The illustrated structure is generally a frame structure with nine legs, and a supporting bottom frame 6 is provided at the first height of the legs, that is, a frame body containing cross beams and longitudinal beams, for installing a predetermined platform, such as a bag covering platform, a sealing platform, etc. The frame structure as a whole can be called the main frame, which is the main installation base for other components on the bag covering and sealing system.

[0039] Regarding the cross beam and the longitudinal beam, first look at the bag pushing longitudinal beam 3 shown in the figure. In Figure 1 the illustrated structure, the bag pushing longitudinal beam 3 is the track beam for the operation of the bag pushing actuating part 2. In some fields, when it comes to the running direction, there will be a definite reference system. Generally, the direction in which the operation is directed is regarded as the front, and the opposite is the back. After the front and back are determined, the left and right are then determined.

[0040] Among them, the front-back direction is also called the longitudinal direction, the long direction, the head-tail direction, etc., and the left-right direction is also called the lateral direction, the transverse direction, the width direction, etc.

[0041] After the front-back, left-right directions are determined, the up-down direction is also determined.

[0042] Among them, the cross beam and the longitudinal beam 2 are named according to the orientation determined by the basic reference system.

[0043] In Figure 1 In the illustrated structure, one end where the bale pushing actuator 2 is currently located is the tail end of the bale pushing longitudinal beam 3, while Figure 1 one end where the motor-reducer integrated machine 7 is located is the front end of the bale pushing longitudinal beam 3. At the tail end of the main frame, a loading platform is configured. Generally, the cotton bale is loaded onto the loading platform from one side. At this time, the bale pushing actuator must be located at the rear side of the cotton bale, and a bale covering platform is often provided in front of the cotton bale that has been loaded in place currently.

[0044] Generally, a bale covering device is provided on the bale covering platform. The bale covering device can be fixedly arranged, and the bale covering device can also move in the front-back direction. When the bale pusher performs bale covering, it can require only one action or there can be multiple actions to meet different applications.

[0045] The action here represents multiple stop positions of the bale pusher to correspond to the pushing stroke during different station conversions.

[0046] After bale covering is completed, the bale pusher can be reset or can further move forward to meet the requirements for pushing the cotton bale at other stations.

[0047] It can be seen from this that the bale pusher often has multiple working strokes in some applications with relatively more stations. Obviously, the higher the running accuracy of the bale pusher, the higher the accuracy of the bale pushing actuator 3 when docking at each station, and the lower the difficulty of completing the corresponding process at the current station.

[0048] In a preferred embodiment, for the drive of the bale pushing actuator 2, preferably a power machine that can output precise motion such as a servo motor or a stepper motor is used for driving to obtain better bale pushing accuracy.

[0049] From Figure 1 a normal perspective, when the bale pushing actuator 2 pushes the cotton bale, the reaction force of the cotton bale will generate a clockwise torque on, for example, the crank arm assembly 21 configured for the bale pushing actuator. If a traditional roller type slide is used, it will cause the crank arm assembly 21 to tilt backward, and the bale pushing accuracy cannot be guaranteed.

[0050] What the bale pusher pushes is the cotton bale. Generally, the cotton bale is loaded from one side. In Figure 1The platforms corresponding to each work station are not shown in the figure, and these platforms will be collectively referred to as working platforms in the following text. Among them, the pusher was mainly designed to achieve bag covering at the beginning. Specifically, a bag covering device was installed on the bag covering platform, which has been described in more detail in the background art part and will not be elaborated here. The pusher pushes the cotton bale into the pusher, and the stroke of the pusher should be sufficient to remove the cotton bale bag from the bag covering device. At this time, if there is no other support for the upper bag surface at the mouth of the cotton bale bag, it will collapse downward due to the loss of support from the bag covering device. For manual sewing (sealing with a needle and thread manually) or welding sealing, the state of the back of the cotton bale bag after bag covering does not have much negative impact. However, for machine sealing, the folding of each bag surface at the bag mouth requires the bag mouth surface to have a good initial state.

[0051] It should be known that after the cotton bale is completely put into the cotton bale bag, there is still a section of the bag body left at the bag mouth for sealing. Since sealing is now mostly completed by machines, the bag body at the bag mouth needs to be folded before sealing. The collapsed upper bag surface affects the regularity of folding. Therefore, in the embodiment of the present invention, a bag mouth support plate 217 is further provided to make the upper bag surface of the bag mouth relatively easy to operate for the mechanism in the sealing device that grabs the upper bag surface, for example, which will be described in more detail below and will not be elaborated here.

[0052] In the embodiment of the present invention, it can be determined from the positional relationship that the pusher longitudinal beam 3 is located at a relatively high position of the main frame, so that the pusher actuating part 2 running on the pusher longitudinal beam 3 can push the bale through the lower cantilever. Obviously, the pusher longitudinal beam 3 must be located above the working platform.

[0053] In Figure 1 In the exemplified structure, the bracket of the frame structure is the main frame. The platform installed on the main frame is relatively complete, and the main process equipment installed on the main frame can basically complete the installation of each process equipment in the bag covering and sealing stages. For the sake of distinction, in terms of type, the bracket is used to represent the basic support including the main frame. In other words, the bracket only provides a single bracket that can only complete the feeding and bag covering work stations.

[0054] The pusher longitudinal beam 3 is Figure 1 supported by a plurality of gantry frames 5 in the exemplified structure. Specifically, it is suspended below the cross beams of a plurality of gantry frames. The pusher longitudinal beam 3 is preferably made of H-shaped steel in the preferred embodiment, and can also be made of, for example, rail I-beam.

[0055] The pusher longitudinal beam 3 has a track part. For the convenience of description, the track of the pusher longitudinal beam 3 is called the track plate. The track plate extends along the pusher longitudinal beam 3, that is, the track plate is a longitudinal track plate and is arranged along the front and back direction of the bracket.

[0056] The track plate has an upper track surface and a lower track surface. In Figure 9In the exemplary structure, the pusher beam 3 is made of an H-shaped steel. The lower flange plate of the H-shaped steel member forms the track plate, the upper flange plate is used for the installation of the H-shaped steel member on the bracket, and the web is used for the connection between the upper flange plate and the lower flange plate.

[0057] Figure 2 and Figure 3 In the exemplary structure, the upper part of the pusher actuator 2 is a seat provided with a roller group. For the convenience of description, this seat is called the seat assembly. The cross-section of the seat assembly is in Figure 2 and Figure 3 an exemplary U-shaped structure in the exemplary structure, and the roller groups are arranged corresponding to both sides of the track plate.

[0058] From Figure 2 and Figure 3 it can be seen that a toggle arm assembly 21 is connected to the lower side of the seat assembly, which belongs to a lower cantilever installed with a downward overhang. During the pusher operation, the seat assembly will bear a relatively large torque.

[0059] The roller group is visible in Figure 9 the exemplary structure and has cam followers 24 that cooperate with the upper track surface of the lower flange plate (i.e., the track plate) of the pusher beam 3, and also has cam followers 24 that cooperate with the lower track surface of the lower flange plate of the pusher beam 3. Thus, the cam followers 24 located above and below the track plate clamp the track plate in the middle. The bonding force between the cam follower 24 for cooperating with the lower track surface and the lower track surface in the initial state (when not in the pusher state) depends on the relationship between the gap between the upper and lower cam followers 24 and the thickness of the track plate. Therefore, it is necessary to adjust the gap so that both the upper and lower cam followers 24 exert pressure on the track plate in the initial state, to eliminate or reduce the fitting gap, so that the lower cantilever is basically unchanged or changes less compared with the state in the initial state during the pusher operation.

[0060] In Figure 2 and Figure 3 the exemplary structure, the upper roller group and the lower roller group each have three pairs of rollers, that is, there are three pairs of cam followers 25 shown in the figure above and below respectively. Since in Figure 2 and Figure 3 the exemplary structure, the cam followers 25 located on the upper side belong to rollers that can be adjusted up and down. The more pairs are configured, the more difficult it is to adjust. Generally, it should not exceed four pairs, but at least two pairs should be provided. When two pairs are provided, one pair of the cam followers 25 located on the upper side is provided at the front and rear ends of the seat frame of the seat assembly respectively.

[0061] For the lower roller group, its configuration method is the same as that of the upper roller group, and will not be elaborated here.

[0062] Based on the clamping of the track slab by the upper and lower roller groups to generate a pre-pressure, this pre-pressure can eliminate the assembly clearance and fit clearance in the initial state. Thus, when the bale pushing actuator 2 pushes the cotton bale, the amount of inclination of the lower cantilever caused by the reaction force of the cotton bale becomes smaller, so that the accuracy of the bale pushing operation can be relatively high.

[0063] Correspondingly, the seat assembly further includes a pre-tightening adjustment device for adjusting the upper roller group and / or the lower roller group in the vertical direction to adjust the pre-pressure between the upper roller group and / or the lower roller group and the track slab.

[0064] In Figure 2 and Figure 3 In the illustrated structure, only the cam follower 25 located on the upper side is equipped with a pre-tightening adjustment device, that is, the part including the adjusting screw 27 shown in the figure. Based on the foregoing, it can be known that the clamping of the upper roller group and the lower roller group to the track slab is generated by the mating method. In other words, only one of the upper roller group and the lower roller group needs to be adjusted in the vertical direction. However, in some implementations, a pre-tightening adjustment device that can be adjusted in the vertical direction can still be used for both the upper and lower roller groups.

[0065] In addition, as a necessary configuration, a driving device is provided to drive the bale pushing actuator to run along the 2 track slabs. The driving device is the power source device for pushing the bale.

[0066] Regarding the configuration of the adjustment device, since the adjustment realized is the adjustment in the vertical direction, that is, the linear adjustment form, which is the most common adjustment method in the mechanical field, there are relatively many known adjustment methods that those skilled in the art can choose based on the up and down adjustment method.

[0067] Figure 5 The structure of the side arm plate 23 shown shows a relatively simple adjustment method. The axle 252 of the cam follower 25 located on the upper side is installed in the long-shaped shaft hole 233 shown in the figure. The width of the long-shaped shaft hole 233 is the same as the diameter of the axle 252. In the height direction, the long-shaped shaft hole 233 provides the adjustment range for the axle 252.

[0068] Furthermore, the roller axle 253 of the cam follower 25 located on the upper side is supported on the upper track surface. In the initial state, the cam follower 25 located on the lower side may not be engaged with the lower track surface, or even if it is engaged, the engagement force is not sufficient to eliminate or reduce the assembly clearance and fit clearance. At this time, the adjusting screw 27 is rotated to press down the axle 252, so that the distance between the upper and lower cam followers 25 becomes smaller, thereby realizing the adjustment.

[0069] Figure 5 In, the circular shaft hole 232 is used for the assembly of the cam follower 25 located on the lower side. Obviously, under this assembly condition, the cam follower 25 located on the lower side is not adjustable.

[0070] In addition, the seat assembly is an assembly in the Figures 2 to 4 illustrated structure, which includes a seat frame, and the seat frame is also an assembly. Figure 4 The upper part of the illustrated swing arm assembly 21 is the inner frame of the seat frame. The inner frame has a connecting side plate 213, and the roller group is installed on the side arm plate 23. The side arm plate 23 and the connecting side plate 213 are assembled using fixing screws 22.

[0071] Wherein, at the position where the side arm plate 23 is provided with an elongated shaft hole 233, a through hole extending from the upper plate surface of the side arm plate 23 to the elongated shaft hole 233 is opened. This through hole is Figure 5 the adjusting screw hole 234 shown in

[0072] Obviously, the extending direction of the elongated shaft hole 233 is the up-and-down direction, and it serves as the mounting seat hole for, for example, the cam follower 25.

[0073] Figure 8 In , the cam follower 25 is a roller assembly with a roller 253 mounted at one end of the shaft. The roller 253 is mounted at one end of the axle 252, and the other end of the axle 252 has a threaded head. Then, the axle 252 is mounted in the corresponding shaft hole by means of a lock nut 252.

[0074] Figure 5 The illustrated assembly structure for the cam follower 25 is a concise adjustment structure with guaranteed adjustability. Since Figure 8 the axle 252 shown in is generally a fixed shaft, and the roller 253 is generally mounted on the axle 252 through a bearing. In other words, the axle 252 is a fixed shaft relative to the roller 253. Therefore, in some embodiments, the axle 252 can be fixed on the roller seat, and the adjustment of the corresponding upper roller or lower roller is reflected in the adjustment of the roller seat.

[0075] There are more available forms of the roller seat and adapted guiding parts relative to the cylindrical shape of the axle 252.

[0076] Furthermore, the seat frame provides a first guiding part for guiding the roller seat in the up-and-down direction. This first guiding part can be, for example, a rectangular groove. The corresponding roller seat is a cuboid block. Tightening screw holes can be opened on the groove wall of the rectangular groove. After the roller seat is adjusted in place, the roller seat is locked in the rectangular groove using, for example, tightening screws.

[0077] In some embodiments, the roller groups can be co-mounted to facilitate overall adjustment. In Figure 2 and Figure 3 the illustrated structure, the upper cam follower 25 can be divided into two groups, each group having a frame body, and separate adjustments are made.

[0078] The adjustment of the frame is the same as that of the roller seat, which will not be elaborated here.

[0079] Since in the embodiments of the present invention, the rollers in the roller group are basically arranged in a cantilevered manner, the corresponding wheel shaft 252 is prone to deflection, resulting in the deviation of the seat frame relative to the bale pushing longitudinal beam 3. Therefore, in a preferred embodiment, a set of side rollers is provided on each of the left and right sides of the seat frame corresponding to the track plate, as Figure 2 and Figure 3 the guiding bearing 26 shown in. The side rollers are used to define that the left and right middle planes of the seat frame are coplanar with the left and right middle planes of the track plate, so as to ensure that the seat frame can run smoothly on the track plate.

[0080] Correspondingly, the left and right plate surfaces of the track plate form the raceways of the side rollers.

[0081] The side rollers directly adopt the guiding bearing 26 in the Figure 2 and Figure 3 illustrated structure. The shaft hole 261 of the guiding bearing 26 is the inner ring hole of the guiding bearing 26, and this inner ring hole is in interference fit with the corresponding shaft body, and is further installed in the Figure 5 pin shaft seat 236 shown in. During installation, first place the guiding bearing 26 into the seat hole of the pin shaft seat 236, and then insert the shaft downward through the pin shaft hole 235 shown in the figure. A part of the guiding bearing 26 protrudes from the inner side of the side arm plate 23 for cooperation with the side surface of the track plate.

[0082] Next, let's look at the structure of the cantilever. In the Figures 2 to 4 illustrated structure, it is represented as the toggle arm assembly 21, which has a vertical arm body and an actuating arm, and the two are connected in a substantially perpendicular manner and are called the toggle arm 211. Among them, the vertical arm body is fixedly connected to the seat frame and extends downward cantileveredly to determine the position of the actuating arm in the up and down directions. The actuating arm is generally fixedly connected to the lower end of the vertical arm body in a vertical manner and extends forward for bale pushing.

[0083] As mentioned above, considering that in a more preferred embodiment, the bale pusher is not only used for bagging but also for assisting in sealing. If it is used for assisting in sealing, the bale pusher should provide relatively good technical conditions for the sealing operation. For this reason, in a more preferred embodiment, a bag mouth support plate 217 is provided on the upper side of the actuating arm to support the upper bag surface of the bag mouth of the cotton bale bag after the pushed cotton bale completely enters the cotton bale bag.

[0084] In the Figure 4 illustrated structure, the bag mouth support plate 217 includes a horizontal part and a transition connection part; among them, the rear end of the horizontal part is connected to the front side of the vertical arm body, and the front end is connected to the front end of the actuating arm through the transition connection part, and is formed as Figure 4The front bow structure shown in the figure does not affect the wrapping and has a good supporting effect on the upper bag surface at the bag mouth. The horizontal part makes the upper bag surface at the bag mouth fit on a horizontal plane, which is conducive to, for example, picking up the upper bag surface at the bag mouth by a suction cup.

[0085] Correspondingly, the horizontal part is parallel to the actuating arm.

[0086] In addition, a reinforcing plate is provided between the upper side of the actuating arm and the front side of the vertical arm body to further reduce the deformation of the turning arm 211 during pushing the bale, thereby improving the pushing accuracy.

[0087] Furthermore, a vertical push plate 218 is provided at the front end of the actuating arm, and the push plate 218 is perpendicular to the actuating arm. The push plate 218 is provided to expand the contact area between the front end of the actuating arm and the cotton bale, reduce the pressure of the actuating arm on the rear end face of the cotton bale, thereby reducing the deformation of the cotton bale and further improving the pushing accuracy.

[0088] As described above, the seat assembly is a combined body, mainly constructing a connection structure by means of this combined body and making the overall stiffness relatively higher. In Figure 4 In the illustrated structure, the seat frame includes left and right connecting side plates 213 and a cross plate for connecting the left and right connecting side plates 213 to form a rectangular frame.

[0089] Furthermore, the upper end of the lower cantilever is located inside the rectangular frame and is fixedly connected to the left and right connecting side plates 213. The upper end of the lower cantilever intervenes inside the rectangular frame, having a relatively large connection area and relatively good connection reliability.

[0090] In Figure 4 In the illustrated structure, the cross plate and the upper end of the lower cantilever are connected by a reinforcing inner plate 215 to further improve the connection reliability.

[0091] As described above, in a more optimal embodiment, the bale pusher has a relatively longer pushing distance in response to more workstations. Under this condition, its maximum working stroke is relatively long. In order to achieve precise driving, the driving device adopts a chain drive mechanism, and the sprockets of the chain drive mechanism are arranged at both ends of the bracket corresponding to the track plate; and the chain of the chain drive mechanism forms a chain loop through the seat frame.

[0092] Figure 4 In, a chain block seat is provided at each of the front and rear ends of the seat frame, such as Figure 4 the first chain block seat 214 and the second chain block seat 216 shown in

[0093] For example Figure 4 the first chain block seat 214 in, its left end has a convex block, and at the same time the first chain block seat 214 is welded to a cross plate, and a groove is formed between the convex block and the cross plate. And Figure 6The first chain block 24 shown in the figure has a fixed seat plate 243. The fixed seat plate 243 is visible in Figure 2 and is exactly embedded in the groove. The convex block provides the profile for bearing the force. Figure 6 The fixed seat hole 244 shown in the figure is used for the assembly of the first chain block 24 on the first chain block seat 214. In the working state, the main force-bearing is the pre-tightening force of locking, and the corresponding fasteners are not easily damaged.

[0094] Thus, it can be seen that the same purpose can also be achieved by directly constructing the groove. The function of the convex block is a stop block, and the same function can also be achieved by one side wall of the groove. Therefore, the side wall of the groove and a certain side surface of the convex block are used to bear the tension of the chain.

[0095] Figure 6 In the figure, the connection holes 241 opened on the connection plate 242 are used to connect with the chain.

Claims

1. A package pusher, characterized in that: include: A bracket having a longitudinal beam, the longitudinal beam including a track plate extending along the longitudinal beam, the track plate having an upper track surface and a lower track surface; The bag pushing actuating part comprises a seat assembly and a lower cantilever for pushing the bag, wherein the seat assembly comprises a seat frame and a lower roller group and an upper roller group mounted on the seat frame, wherein the upper roller group comprises at least one pair of upper rollers located at the front and rear ends of the seat frame, and the lower roller group comprises at least one pair of lower rollers located at the front and rear ends of the seat frame; wherein the upper rollers in the upper roller group are engaged with the upper track surface, and the lower rollers in the lower roller group are engaged with the lower track surface; and A driving device for driving the bag pushing actuating part to move along the track plate; The seat assembly further includes a preload adjustment device for adjusting the upper roller group and / or the lower roller group in the up and down directions, so as to adjust the preload between the upper roller group and / or the lower roller group and the track plate.

2. The package pusher according to claim 1, characterized in that: The adjustment device is configured as follows: In the first form, the upper roller and / or the lower roller are mounted on the corresponding roller seat, the seat frame provides a first guide portion for guiding the roller seat in the up and down direction, and provides a first locking component to lock the roller seat to the first guide portion after the roller seat is adjusted into position on the first guide portion; In the second form, the upper roller group and the lower roller group are mounted on a common frame, and the common frame is a common frame body that can be lifted up and down. The seat frame provides a second guide portion in the up and down direction for the common frame body, and provides a second locking component to lock the common frame body to the second guide portion after the common frame body is adjusted into place on the second guide portion; or The third form, the upper roller and / or the lower roller has a roller shaft, the corresponding roller is installed at one end of the roller shaft, and the other end of the roller shaft has a limit head; the frame provides an elongated hole used as a roller shaft seat hole and extending in the up and down directions, and the roller shaft is horizontally inserted into the elongated hole; the upper wall or the lower wall of the elongated hole is correspondingly opened with an adjusting screw hole, and an adjusting screw is provided for adjusting the upper and lower position of the roller shaft in the elongated hole.

3. The package pusher according to claim 2, characterized in that: The seat frame is provided with side arm plates symmetrically arranged in the left and right directions; In the third form, the elongated hole is provided on the side arm plate; The adjusting screw hole is a through hole extending from the upper surface of the side arm plate to the elongated hole.

4. The package pusher according to any one of claims 1 to 3, characterized in that: The seat frame is provided with a set of side rollers on the left and right sides corresponding to the track plate; Correspondingly, the left and right plate surfaces of the track plate constitute the raceways of the side rollers.

5. The package pusher according to claim 1, characterized in that: The lower cantilever comprises: A vertical arm body is fixedly connected to the seat frame and cantilevered downward; The actuator arm is fixedly connected to the lower end of the vertical arm body and cantilevers forward.

6. The package pusher according to claim 5, characterized in that: A bag opening support plate is provided on the upper side of the actuating arm to support the upper bag surface of the bag opening of the cotton bale bag after the pushed cotton bale completely enters the cotton bale bag.

7. The package pusher according to claim 6, characterized in that: The bag opening support plate includes a horizontal portion and a transition connection portion; Wherein, the rear end of the horizontal part is connected to the front side of the vertical arm body, and the front end is connected to the front end of the actuating arm through the transition connection part; The horizontal portion is parallel to the actuating arm.

8. The package pusher according to claim 6, characterized in that: A reinforcing plate is provided between the upper side of the actuating arm and the front side of the vertical arm body; A vertical push plate is provided at the front end of the actuating arm, and the push plate is perpendicular to the actuating arm.

9. The package pusher according to claim 1, characterized in that: The seat frame includes left and right connecting side plates and a transverse plate for connecting the left and right connecting side plates to form a rectangular frame; The upper end of the lower cantilever is located in the rectangular frame and is fixedly connected to the left and right connecting side plates.

10. The package pusher according to claim 9, characterized in that: The cross plate and the upper end of the lower cantilever are connected via a reinforced inner plate.

11. The package pusher according to claim 1, characterized in that: The driving device is a chain transmission mechanism, and the sprockets of the chain transmission mechanism are arranged at two ends of the bracket corresponding to the track plate; The chain of the chain transmission mechanism is formed into a chain loop through the seat frame.

12. The package pusher according to claim 11, characterized in that: The seat frame is provided with a chain block seat at both ends in the front-rear direction, and the upper surface or the lower surface of the chain block seat has a protrusion or a groove; The chain connection end has a fixed seat plate, which is accommodated in the groove or the protrusion serves as a stopper in the direction of chain pulling, and the groove or the protrusion is used to bear the tension of the chain.

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