Bag pushing device

Abstract

The utility model discloses a bag pushing device, which comprises a track plate, a bag pushing device, a bag pushing device and a bag pushing device, and is characterized in that 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 utility model relates to a package 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 arranged above the cotton bale conveying platform. Specifically, a longitudinal beam is provided above the cotton bale conveying platform, and the actuating assembly is installed on the longitudinal beam. The actuating assembly includes a slide coupled to the longitudinal beam through a track pair, and a push arm is suspended downward from the slide, and the push arm extends to the middle of the height direction of the cotton bale. In this way, the size of the actuating assembly can be relatively compact in the cotton bale conveying direction. However, since the push arm of this type of bale pusher is arranged in a downwardly suspended manner, while the push arm pushes the cotton bale forward, the force of the cotton bale reacting on the push arm will cause the root of the push arm to bear a relatively large torque. The track pair generally adopts a roller track pair, and the matching clearance is relatively large. When pushing the bale, the push arm will have a large backward tilt angle. The difficulty of pushing the bale is relatively large, and the accuracy of the cotton bale in place will also be greatly affected. Utility Model Content

[0007] The utility model aims to provide a bag pusher which has a compact structure and can easily ensure the bag pushing accuracy.

[0008] In an embodiment of the present utility model, a package pusher is provided, comprising:

[0009] 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;

[0010] 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

[0011] A driving device for driving the bag pushing actuating part to move along the track plate;

[0012] 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.

[0013] Optionally, the adjustment device is configured as:

[0014] 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;

[0015] 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

[0016] 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.

[0017] Optionally, the seat frame is provided with side arm plates symmetrically arranged with respect to each other in the left and right directions;

[0018] In the third form, the elongated hole is provided on the side arm plate;

[0019] The adjusting screw hole is a through hole extending from the upper surface of the side arm plate to the elongated hole.

[0020] Optionally, the seat frame is provided with a set of side rollers on the left and right sides corresponding to the track plate;

[0021] Correspondingly, the left and right plate surfaces of the track plate constitute the raceways of the side rollers.

[0022] Optionally, the lower cantilever comprises:

[0023] A vertical arm body is fixedly connected to the seat frame and cantilevered downward;

[0024] The actuator arm is fixedly connected to the lower end of the vertical arm body and cantilevers forward.

[0025] Optionally, 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.

[0026] Optionally, the bag opening support plate includes a horizontal portion and a transition connection portion;

[0027] 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;

[0028] The horizontal portion is parallel to the actuating arm.

[0029] Optionally, a reinforcing plate is provided between the upper side of the actuating arm and the front side of the vertical arm body;

[0030] A vertical push plate is provided at the front end of the actuating arm, and the push plate is perpendicular to the actuating arm.

[0031] Optionally, the seat frame includes left and right connecting side panels and a transverse panel for connecting the left and right connecting side panels to form a rectangular frame;

[0032] 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.

[0033] Optionally, the transverse plate is connected to the upper end of the lower cantilever via a reinforced inner plate.

[0034] Optionally, 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;

[0035] The chain of the chain transmission mechanism is formed into a chain loop through the seat frame.

[0036] Optionally, the seat frame is provided with a chain block seat at each end in the front-rear direction, and the upper surface or the lower surface of the chain block seat has a protrusion or a groove;

[0037] 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.

[0038] The bag pusher according to the embodiment of the utility model is a bag pusher with a lower cantilever. At this time, the driving device of the bag pusher is arranged above the bag pushing platform, and the space occupied in the front and rear directions of the bag pushing platform is relatively small, and the overall structure is relatively compact. In order to solve the problem that the cantilever produces an angle position due to the large torque on the bag pushing actuating part when the lower cantilever is configured, resulting in a relatively low accuracy of pushing the bag into place, in the embodiment of the utility model, a longitudinally extending track plate is provided, the track plate has an upper track surface and a lower track surface, and the bag pushing actuating part is correspondingly provided with an upper roller group and a lower roller group, wherein the upper roller group runs on the upper track surface, and the lower roller group runs on the lower track surface, which is equivalent to clamping the track plate between the upper and lower roller groups. Furthermore, the seat assembly of the bag pushing actuating part is adapted to one or both of the two roller groups and is provided with a preload adjustment device for adjusting in the up and down directions. With the help of the preload adjustment device, a given preload is provided between the two roller groups 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, so that the state change of the lower cantilever during bag pushing can be relatively small, and the bag pushing accuracy can be relatively easier to ensure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the installation status of the package pusher on the main frame of the package sealing and packaging system in one embodiment.

[0040] Figure 2 It is a schematic diagram of the rear left-down three-dimensional structure of the bag pushing actuating part of the bag pushing device in one embodiment.

[0041] Figure 3 It is a schematic diagram of the front left-down three-dimensional structure of the bag pushing actuating part of the bag pushing device in one embodiment.

[0042] Figure 4 Schematic diagram of the structure of a crank arm assembly in one embodiment.

[0043] Figure 5 Schematic diagram of the side arm plate structure in one embodiment.

[0044] Figure 6 Schematic diagram of the first chain block structure in one embodiment.

[0045] Figure 7 Schematic diagram of the guide bearing structure in one embodiment.

[0046] Figure 8 Schematic diagram of the cam bearing follower structure in one embodiment.

[0047] Fig. 9 It is a schematic diagram of the left view of the package pusher in one embodiment.

[0048] In the figure: 1. tensioning device, 2. push bag actuating part, 3. push bag longitudinal beam, 4. connecting beam, 5. gantry, 6. supporting bottom frame, 7. motor reducer integrated machine.

[0049] 21. crank arm assembly, 22. fixing screw, 23. side arm plate, 24. first chain block, 25. cam bearing follower, 26. guide bearing, 27. adjusting screw, 28. second chain block.

[0050] 211. crank arm, 212. reinforcement plate, 213. connecting side plate, 214. first chain block seat, 215. reinforcement inner plate, 216. second chain block seat, 217. bag mouth support plate, 218. push plate.

[0051] 231. Fixing hole, 232. Round shaft hole, 233. Long shaft hole, 234. Adjusting screw hole, 235. Pin shaft hole, 236. Pin shaft seat.

[0052] 241. Connecting hole, 242. Connecting plate, 243. Fixed seat plate, 244. Fixed seat hole.

[0053] 251. Locking nut, 252. Axle, 253. Roller.

[0054] 261. Axis hole. DETAILED DESCRIPTION

[0055] In order to more clearly understand the present invention, the working object of the package pusher will be described below.

[0056] Figure 1The illustrated structure is a frame structure as a whole, with nine legs, and a supporting bottom frame 6 is provided at the first height of the legs, that is, a frame body containing crossbeams and longitudinal beams, which is used to install a predetermined platform, such as a packaging platform, a sealing platform, etc. The frame structure as a whole can be called a main frame, which is the main mounting base for other components of the packaging and sealing system.

[0057] In relation to the cross beam and the longitudinal beam, first look at the longitudinal beam 3 shown in the figure. Figure 1 In the illustrated structure, the push bag longitudinal beam 3 is the track beam for the push bag actuating part 2 to run. In some fields, there is a definite reference system when it comes to the running direction, generally the running direction is the front, and the opposite direction is the back. After the front and back are determined, the left and right are determined.

[0058] The front-to-back direction is also called the longitudinal direction, length direction, head-to-tail direction, etc., while the left and right directions are called the lateral direction, transverse direction, width direction, etc.

[0059] After the front, back, left, and right directions are determined, the up and down directions are also determined.

[0060] The cross beam and the longitudinal beam 2 are named according to the orientation determined by the basic reference system.

[0061] exist Figure 1 In the illustrated structure, the end where the bag pushing actuating part 2 is currently located is the tail end of the bag pushing longitudinal beam 3, and Figure 1 The 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. Cotton bales are generally 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 on the front side of the cotton bale currently loaded.

[0062] The packing platform is generally provided with a packing device, which can be fixed or movable in the front and rear directions. The packing pusher may only need one action or multiple actions when packing to meet different applications.

[0063] The action here represents the multiple stop positions of the package pusher, corresponding to the pushing stroke during different station conversions.

[0064] After the bale is wrapped, the bale pusher can be reset or moved forward to meet the requirements of other workstations for bale advancement.

[0065] It can be seen that the package pusher often has multiple working strokes in some applications with relatively more workstations. It is obvious that the higher the operating accuracy of the package pusher, the higher the accuracy of the package pusher actuator 3 stopping at each workstation, and the lower the difficulty of completing the corresponding process at the current workstation.

[0066] In a preferred embodiment, the driving of the bag pushing actuator 2 is preferably carried out by a power machine such as a servo motor, a stepping motor, etc. that can output precise motion, so as to obtain better bag pushing accuracy.

[0067] by Figure 1 From a normal perspective, when the bag pushing actuator 2 pushes the cotton bag, the reaction force of the cotton bag will generate a clockwise torque on the bag pushing actuator, such as the crank arm assembly 21. If a traditional roller-type slide seat is used, the crank arm assembly 21 will tilt backward, and the bag pushing accuracy cannot be guaranteed.

[0068] The bale pusher pushes the cotton bale, which is usually loaded from one side. Figure 1 The platforms corresponding to each workstation are not shown, and these platforms are collectively referred to as working platforms below. Among them, the bale pusher was originally designed mainly for bagging. Specifically, a bagging device is installed on the bagging platform. This has been described in detail in the background technology section and will not be repeated here. The bale pusher pushes the cotton bale into the bale pusher. The stroke of the bale pusher should be sufficient to remove the cotton bale bag from the bagging device. At this time, if there is no other support, the upper bag surface at the bag mouth of the cotton bale bag will collapse downward due to the loss of support from the bagging device. For manual sewing (manual sealing using needle and thread sewing) or welding, the state of the bag mouth after the cotton bale is bagged does not have much negative impact, but for machine sealing, the folding of each bag surface at the bag mouth requires the bag surface to have a good initial state.

[0069] It should be known that after the cotton bale is completely put into the cotton bale bag, a section of the bag body still remains at the bag mouth for sealing. Since the sealing is now mostly done by machines, the bag body at the bag mouth needs to be folded before sealing. The collapsed upper bag surface affects the regularity of the folding. Therefore, in the embodiment of the utility model, 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 of the sealing device, such as grabbing the upper bag surface, before sealing. This will be described in relatively detail below and will not be repeated here.

[0070] In the embodiment of the utility model, it can be determined from the positional relationship that the bag pushing longitudinal beam 3 is located at a relatively high position of the main frame, so that the bag pushing actuator 2 running on the bag pushing longitudinal beam 3 can push the bag through the lower cantilever. Obviously, the bag pushing longitudinal beam 3 must be located above the working platform.

[0071] exist Figure 1 In the illustrated structure, the frame structure bracket 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 various process equipment in the packaging and packaging stage. In order to distinguish, in terms of type, the bracket is used to represent the basic support including the main frame. In other words, the bracket is still a single bracket that only provides loading and packaging stations.

[0072] Push package longitudinal beam 3 Figure 1 In the illustrated structure, multiple gantries 5 are used for support, specifically suspended below multiple gantry beams. The push-pack longitudinal beam 3 is made of H-shaped steel in a preferred embodiment, and can also be made of, for example, track I-shaped steel.

[0073] The push-bag longitudinal beam 3 has a track portion. For the convenience of description, the track of the push-bag longitudinal beam 3 is called a track plate. The track plate extends along the push-bag longitudinal beam 3, that is, the track plate is a longitudinal track plate, and is arranged along the front and rear direction of the bracket.

[0074] The track plate has an upper track surface and a lower track surface. Fig. 9 In the illustrated structure, the longitudinal beam 3 is made of H-shaped steel, the lower flange plate of the H-shaped steel member constitutes the track plate, the upper flange plate is used for installing the H-shaped steel member on the bracket, and the web plate is used for connecting the upper flange plate and the lower flange plate.

[0075] Figure 2 and Figure 3 In the illustrated structure, the upper part of the push bag actuating part 2 is a seat with a roller assembly. For the convenience of description, the seat is referred to as the seat assembly. Figure 2 and Figure 3 The illustrated structure is a U-shaped structure, so that roller groups are arranged corresponding to both sides of the track plate.

[0076] from Figure 2 and Figure 3 As can be seen in the figure, the lower side of the seat assembly is connected to a crank arm assembly 21, which is a lower cantilever installed downwardly. When the bag is pushed, the seat assembly will be subjected to a relatively large torque.

[0077] The roller group Fig. 9 It can be seen from the illustrated structure that there is a cam bearing follower 24 that cooperates with the upper track surface of the lower flange plate (i.e., the track plate) of the push-bag longitudinal beam 3, and also a cam bearing follower 24 that cooperates with the lower track surface of the lower flange plate of the push-bag longitudinal beam 3, so that the cam bearing followers 24 located above and below the track plate clamp the track plate in the middle, and the binding force between the cam bearing follower 24 that cooperates with the lower track surface and the lower track surface in the initial state (when the package is not pushed) depends on the relationship between the gap between the upper and lower cam bearing followers 24 and the thickness of the track plate. Therefore, it is necessary to adjust the gap so that the upper and lower cam bearing followers 24 both generate pressure on the track plate in the initial state, so as to eliminate or reduce the matching gap, so that the lower cantilever is basically unchanged or changes less than the state in the initial state when the package is pushed.

[0078] exist Figure 2 and Figure 3In the illustrated structure, the upper roller group and the lower roller group each have three pairs of rollers, that is, the cam bearing follower 25 shown in the figure has three pairs of rollers on the upper and lower sides. Figure 2 and Figure 3 The cam bearing follower 25 located on the upper side in the illustrated structure is an adjustable roller. The more pairs of cam bearing followers there are, the more difficult it is to adjust. Generally, it should not exceed four pairs, but there should be at least two pairs. When two pairs are provided, a pair of cam bearing followers 25 located on the upper side of the two pairs are provided at the front and rear ends of the seat frame of the seat assembly.

[0079] The configuration of the lower roller group is the same as that of the upper roller group, and will not be described in detail here.

[0080] Based on the pre-pressure generated by the clamping of the track plate by the upper and lower roller groups, this pre-pressure can eliminate the assembly gap and the matching gap in the initial state. Therefore, when the bale pushing actuator 2 pushes the cotton bale, the reaction force of the cotton bale makes the inclination of the lower cantilever smaller, so that the accuracy of the bale pushing operation can be relatively high.

[0081] Correspondingly, the seat assembly also includes a preload adjustment device for adjusting the upper roller group and / or the lower roller group in the up and down direction to adjust the preload between the upper roller group and / or the lower roller group and the track plate.

[0082] exist Figure 2 and Figure 3 In the illustrated structure, only the cam bearing follower 25 located on the upper side is equipped with a preload adjustment device, that is, the part including the adjustment screw 27 shown in the figure. Based on the above content, it can be known that the clamping of the track plate by the upper roller group and the lower roller group is generated based on the matching mode. In other words, only one of the upper roller group and the lower roller group needs to be adjusted in the up-down direction. However, in some implementations, both the upper and lower roller groups can be equipped with a preload adjustment device that can be adjusted in the up-down direction.

[0083] In addition, as a necessary configuration, a driving device is provided to drive the bag pushing actuating part to run along the two track plates. The driving device is a power source device for pushing the bag.

[0084] Regarding the configuration of the adjusting device, since the adjustment achieved is in the up and down directions, that is, a linear adjustment form, which is the most common adjustment method in the mechanical field, technicians in this field have relatively many known adjustment methods to choose from based on the up and down adjustment methods.

[0085] Figure 5 The structure of the side arm plate 23 shown in the figure demonstrates a relatively concise adjustment method. The axle 252 of the cam bearing follower 25 located on the upper side is installed in the elongated axial hole 233 shown in the figure. The width of the elongated axial hole 233 is the same as the diameter of the axle 252. In the height direction, the elongated axial hole 233 provides an adjustment range for the axle 252.

[0086] Furthermore, the roller shaft 253 of the cam bearing follower 25 located on the upper side is supported on the upper track surface. In the initial state, the cam bearing follower 25 located on the lower side may not be engaged with the lower track surface, or even if they are engaged, the engagement force is not sufficient to eliminate or reduce the assembly clearance and fitting clearance. At this time, the adjusting screw 27 is rotated to press the wheel shaft 252 downward to reduce the distance between the upper and lower cam bearing followers 25, thereby achieving the above-mentioned adjustment.

[0087] Figure 5 In the embodiment, the circular shaft hole 232 is used for assembling the cam bearing follower 25 located at the lower side. Obviously, under this assembly condition, the cam bearing follower 25 located at the lower side is not adjustable.

[0088] In addition, the seat assembly Figure 2~Figure 4 The illustrated structure is a combination, which includes a frame, which is also a combination. Figure 4 The upper part of the illustrated crank arm assembly 21 is the inner frame of the seat frame, the inner frame has a connecting side plate 213, and the roller assembly is installed on the side arm plate 23, and the side arm plate 23 and the connecting side plate 213 are assembled using fixing screws 22.

[0089] The position where the side arm plate 23 has the elongated shaft hole 233 is provided with a through hole extending downward from the upper plate surface of the side arm plate 23 to the elongated shaft hole 233. Figure 5 The adjusting screw hole 234 is shown in FIG.

[0090] Obviously, the extending direction of the elongated shaft hole 233 is the up-down direction, and serves as a mounting seat hole for the cam bearing follower 25, for example.

[0091] Figure 8 In the figure, the cam bearing follower 25 is a roller assembly with a roller 253 mounted on the shaft end. The roller 253 is mounted on one end of the wheel shaft 252, and the other end of the wheel shaft 252 has a threaded head. Then, the wheel shaft 252 is installed in the corresponding shaft hole with the help of a locking nut 252.

[0092] Figure 5 The illustrated assembly structure for the cam bearing follower 25 is a simple adjustment structure with guaranteed adjustability. Figure 8 The axle 252 shown in the figure is generally a fixed axle, and the roller 253 is generally mounted on the axle 252 through a bearing. In other words, the axle 252 is a fixed axle 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.

[0093] Compared with the cylindrical shape of the wheel axle 252, the roller seat has more available forms and adaptable guide parts.

[0094] Furthermore, the seat frame provides a first guide portion for guiding the roller seat in the up and down directions. The first guide portion can be, for example, a rectangular groove. The corresponding roller seat is a rectangular block. For example, a set screw hole can be opened on the groove wall of the rectangular groove. After the roller seat is adjusted into place, the roller seat is locked in the rectangular groove using, for example, a set screw.

[0095] In some embodiments, the roller group can be mounted together to facilitate overall adjustment. Figure 2 and Figure 3 In the illustrated structure, the cam bearing followers 25 located on the upper side can be divided into two groups, each group having a frame, and can be adjusted separately.

[0096] The adjustment of the frame is the same as that of the roller seat and will not be described in detail here.

[0097] Since in the embodiment of the utility model, the rollers in the roller group are basically arranged in a cantilevered manner, the corresponding wheel axle 252 is prone to deflection, causing the seat frame to deviate relative to the push bag longitudinal beam 3. Therefore, in a preferred embodiment, the seat frame is provided with a set of side rollers on the left and right sides of the track plate, such as Figure 2 and Figure 3 The guide bearing 26 shown in the figure. The side rollers are used to limit the left and right middle surfaces of the seat frame to be coplanar with the left and right middle surfaces of the track plate to ensure that the seat frame can run smoothly on the track plate.

[0098] Correspondingly, the left and right plate surfaces of the track plate constitute the raceways of the side rollers.

[0099] Side scroll wheel Figure 2 and Figure 3 The illustrated structure directly uses the guide bearing 26, and the through-shaft hole 261 of the guide bearing 26 is the inner ring hole of the guide bearing 26, and the inner ring hole is interference-fitted with the corresponding shaft body, and is further installed on Figure 5 In the pin seat 236 shown in the figure. During installation, first put the guide bearing 26 into the seat hole of the pin seat 236, and then pass the shaft downward from the pin hole 235 shown in the figure. A portion of the guide bearing 26 is exposed from the inner side of the side arm plate 23 for matching with the side of the track plate.

[0100] Let's look at the cantilever structure. Figures 2~4 The structure shown in the example is represented as a crank arm assembly 21, which has a vertical arm body and an actuating arm, which are connected in a substantially perpendicular manner to each other and are called a crank arm 211. The vertical arm body is fixedly connected to the seat frame and cantilevered downward to determine the position of the actuating arm in the vertical direction. The actuating arm is generally fixed to the lower end of the vertical arm body in a vertical manner and cantilevered forward to push the bag.

[0101] As mentioned above, considering that in a more preferred embodiment, the bale pusher is not only used for bale covering, but also for auxiliary bale sealing, if used for auxiliary bale sealing, the bale pusher should provide relatively good technical conditions for the bale sealing operation. To this end, in a more preferred embodiment, a bag opening support plate 217 is provided on the upper side of the actuating arm to support the upper bag surface of the bag opening of the cotton bale after the pushed cotton bale completely enters the cotton bale cover.

[0102] exist Figure 4 In the illustrated structure, the bag opening support plate 217 includes a horizontal portion and a transition connection 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 connection portion, thereby forming a Figure 4 The front bow structure shown in does not affect the bag, and has a good supporting effect on the bag surface at the bag opening. The horizontal part makes the bag surface at the bag opening fit on the horizontal plane, which is conducive to the suction cup picking up the bag surface at the bag opening.

[0103] Correspondingly, the horizontal portion is parallel to the actuating arm.

[0104] 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 crank arm 211 when pushing the bag, thereby improving the pushing accuracy of the bag.

[0105] 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 of the cotton bale, thereby reducing the deformation of the cotton bale and further improving the bale pushing accuracy.

[0106] As mentioned above, the seat assembly is a combination, which is mainly used to construct the connection structure and make the overall rigidity relatively higher. Figure 4 In the illustrated structure, the seat frame includes left and right connecting side plates 213 and a horizontal plate for connecting the left and right connecting side plates 213 to form a rectangular frame.

[0107] Furthermore, 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 213. The upper end of the lower cantilever is inserted into the rectangular frame, has a relatively large connection area, and has relatively good connection reliability.

[0108] exist Figure 4 In the illustrated structure, the cross plate and the upper end of the lower cantilever are connected by a reinforced inner plate 215, so as to further improve the connection reliability.

[0109] As mentioned above, in a more preferred embodiment, the bag pusher has a relatively longer bag pushing distance due 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 transmission mechanism, and the sprockets of the chain transmission mechanism are arranged at the two ends of the bracket corresponding to the track plate; and the chain of the chain transmission mechanism is formed into a chain loop through the seat frame.

[0110] Figure 4 In the embodiment, the seat frame is provided with a chain block seat at both ends in the front-rear direction. Figure 4 The first chain block seat 214 and the second chain block seat 216 are shown in FIG.

[0111] For example Figure 4 The first chain block seat 214 has a protrusion at its left end, and the first chain block seat 214 is welded to a horizontal plate, and a groove is formed between the protrusion and the horizontal plate. Figure 6 The first chain block 24 shown in FIG. 1 has a fixed seat plate 243. The fixed seat plate 243 is Figure 2 As can be seen in the figure, it is just embedded in the groove, and the protrusion provides a profile to bear the force. Figure 6 The fixing seat hole 244 shown in the figure is used for assembling the first chain block 24 on the first chain block seat 214. In the use state, the load is mainly the locking pre-tightening force, and the corresponding fastener is not easy to fail.

[0112] It can be seen that directly constructing the groove can also achieve the same purpose. The role of the projection is a stopper, and a groove wall of the groove can also achieve the same role, so that the groove wall of the groove and a side of the projection are used to support the tension of the chain.

[0113] Figure 6 In the embodiment, the connection hole 241 opened on the connection plate 242 is used for connection 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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