Ginned cotton packing machine pre-pressing cotton pressing device and packing machine

Abstract

The utility model discloses a lint cotton baler prepressing cotton pressing device and baler wherein the lint cotton baler prepressing cotton pressing device comprises: a prepressing beam comprising two frames, the opposite sides of which are provided with vertical guide rails; the guide part comprises two vertical arms and cotton baffle plates, and the two sides of the cotton baffle plates are correspondingly connected with the vertical arms on the sides; the two vertical arms are provided with sliding rails matched with the guide rails on the corresponding sides to form a guide rail pair. The length of the sliding rail is larger than that of the guide rail, and when the guide part is located at the upper dead center, part of the sliding rail is exposed out of the upper end of the guide rail to form a reserved section; the pre-pressing head is fixedly mounted at the lower end of the vertical arm; and a push rod, extending downwards, of the pre-pressing oil cylinder is fixedly connected with the pre-pressing pressure head. The pre-pressing cotton pressing device of the lint cotton packaging machine is relatively good in reliability.

Description

Technical Field

[0001] This utility model relates to a pre-compression device used in a cotton baling machine, and also to a baling machine equipped with the pre-compression device. Background Technology

[0002] The operation of a cotton hydraulic baler is divided into a pre-compression process and a main compression process. For the same bale of cotton, the two processes are carried out consecutively, while for adjacent bales of cotton, the two processes are basically carried out simultaneously. Figure 1 The figure shows the main structure of a known cotton baling machine. As can be seen, the upper end of the pre-compression cotton box on the pre-compression side 3 is fitted with a pre-compression device 2 for the cotton baling machine. The specific structure of this known pre-compression device 2 for the cotton baling machine can be seen in... Figure 2 The cotton is repeatedly pre-pressed to a position below the pre-press cotton box hook device by means of the pre-press head 4. Since the cotton in the pre-press cotton box will generate a very large reaction force during packaging, the lateral stability of the pre-press cylinder 7 that provides the pre-pressure is not easy to guarantee. Therefore, an auxiliary guide is needed for the pre-press head 4.

[0003] Specifically, such as Figure 2 As shown, the cylinder body of the preload cylinder 7 is fixed to the machine body on the preload side or Figure 2 On the prestressed inner beam 5 shown, Figure 2 The cotton baffle 9 shown is generally fixedly connected to the pre-compression head 4 and located on the front side of the pre-compression head 4. In the initial stage of packaging, the cotton baffle 9 is used to guide the loose cotton into the cotton box evenly, avoiding local accumulation or voids. The pre-compression head 4 is provided with a guide rod 6 on each side corresponding to the pre-compression cylinder 7. The lower end of the guide rod 6 is fixed to the pre-compression head 4, and the upper end is fixedly connected to the upper edge of the cotton baffle 9 through the top angle steel 8. That is, the guide rod 6, the cotton baffle 9 and the pre-compression head 4 form an up-and-down moving assembly, and the push rod of the pre-compression cylinder 7 is centrally connected to the pre-compression head 4.

[0004] As mentioned earlier, during pre-compression, the reaction force of the cotton lint on the pre-compression head 4 will be very large. Therefore, it is necessary to provide a guide for the pre-compression head 4, and the reliability of the guide must be ensured. In view of this, as... Figure 4 As shown, the preloaded inner beam 5 has through holes 15 at the positions of the two guide rods 6 for the guide rods 6 to pass through. A set of guide wheels is provided around each through hole 15 on the upper and lower surfaces of the preloaded inner beam 5, such as the upper guide wheel group 13 and the lower guide wheel group 14 shown in the figure. Each guide wheel group has three guide wheels, which are evenly distributed around the circumference of the through hole 15.

[0005] Limited by the height of the preloaded inner beam 5, although the coordinated guidance of the upper guide wheel assembly 13 and the lower guide wheel 14, which have a certain span between them, can provide guidance with a certain length in the axial direction of the guide rod 6, this length is still relatively short. Furthermore, the contact area between the guide wheel 14 and the guide rod 6 is very small, resulting in relatively low guidance reliability and significant vibration during the guiding process.

[0006] Furthermore, since the pre-compression stroke is typically over 1200mm, while the support section provided by the two sets of guide wheels is relatively small, when the pre-compression moves downwards or upwards to the pre-compression limit position, the two sets of guide wheels will only be located on one section of guide rod 6, which can easily cause the pre-compression cylinder to deviate. Moreover, with technological advancements, the baling capacity per unit time of baling machines is increasing, and the speed and frequency of pre-compression are correspondingly increasing. The vibration impact during pre-compression is also becoming increasingly significant, which can easily lead to loose bolts, damage to mechanical or hydraulic components, and potentially endanger equipment and personal safety.

[0007] Given the increasing demand for higher-speed baling machines, the market needs are becoming more urgent. High-speed and stable pre-compression and cotton-pressing processes are key to high-speed baling machines, but the current pre-compression stroke, which guides the guide rod via guide wheels, is increasingly unable to meet the technical requirements of baling.

[0008] Existing packaging machine references:

[0009] Chinese patent document CN220501232U.

[0010] Chinese patent document CN220974833U. Utility Model Content

[0011] The purpose of this utility model is to provide a pre-compression device for a cotton baler with relatively good reliability. This utility model also provides a baler with the pre-compression device for the cotton baler.

[0012] According to a first aspect of the present invention, a pre-compression device for a cotton baling machine is provided, comprising:

[0013] The preload beam includes two parallel and vertically arranged side frames, and an upper horizontal frame for connecting the two side frames at the top; wherein the two side frames are provided with vertical guide rails on opposite sides.

[0014] The guide section includes two vertical arms that are parallel to each other and arranged vertically, and cotton baffles on both sides that are connected to the vertical arms respectively; wherein, the two vertical arms are provided with slide rails that cooperate with the corresponding side guide rails to form a guide rail pair; the length of the slide rail is greater than the length of the guide rail, and when the guide section is at the upper stop point, part of the slide rail protrudes from the upper end of the guide rail, forming a reserved section;

[0015] The preload head is fixedly installed at the lower end of the vertical arm; and

[0016] A pre-compression cylinder, the cylinder body of which is fixedly installed on the pre-compression beam or the frame of the baling machine, and the downwardly extending push rod of the pre-compression cylinder is fixedly connected to the pre-compression head.

[0017] Optionally, the length of the reserved section is one-eighth to one-fifth of the length of the guide rail.

[0018] Optionally, the upper horizontal frame is a rectangular frame, and the rectangular opening corresponding to the rectangular frame is used at least for the clearance of the reserved segment moving upwards.

[0019] Optionally, the preloaded beam has a middle horizontal frame for interconnecting the two side frames;

[0020] The corresponding horizontal frame has a front horizontal frame and a back horizontal frame, which are connected to the front or back of the frame respectively.

[0021] Optionally, the lower end of the preload beam is provided with a foot for mounting the preload beam on the frame of the baling machine, forming a first installation position;

[0022] An additional mounting beam is provided, which has mounting holes extending through the beam in the vertical direction; the mounting beam is correspondingly fixed to the frame of the baling machine.

[0023] The lower part of the preloaded beam is fitted into the mounting seat hole, and the corresponding frame is fixedly connected to the mounting crossbeam to form a second mounting position, which is higher than the first mounting position.

[0024] Optionally, the guide rail pair is a lubricant-free guide rail pair.

[0025] Optionally, the cotton baffle plate has central fixing holes arranged in the middle and upper parts;

[0026] Accordingly, several cross arms are installed on the back side of the cotton-blocking plate through the central fixing hole;

[0027] The two ends of the horizontal arm are fixed to the vertical arm accordingly.

[0028] Optionally, the lower part of the cotton-blocking plate, which includes a straight groove for avoiding the hook holder, is provided with a plurality of additional vertical reinforcing ribs, and the length of the additional reinforcing ribs is greater than the length of the straight groove.

[0029] Optionally, the left and right sides of the cotton baffle have flanges;

[0030] The lower back of the cotton baffle is fixedly connected to the front of the pre-press head;

[0031] Several reinforcing plates are also installed between the two vertical arms.

[0032] According to a second aspect of the present invention, a baling machine is provided, including the pre-compression device for the cotton baling machine described in the first aspect of the present invention.

[0033] In contrast, although known pre-compression devices for cotton baling machines use guide wheels on both the upper and lower sides of the pre-compression inner beam, their support and guiding performance is relatively poor. Furthermore, when the pre-compression head is at its lower stop point, the overall rigidity of the guide rod is relatively insufficient, leading to vibration at a relatively low rate. Compared to guide rods, the pre-compression device for cotton baling machines based on this embodiment of the invention uses a pre-compression beam with guide rails that forms a gantry frame, ensuring overall rigidity. The guide section is also a frame sheet metal structure (the included cotton baffles can be sheet metal or steel plates), and its overall structure itself has relatively good rigidity. The slide rails on both sides of the guide section, based on the integrity of the frame sheet metal structure, and given a given span, improve the straightness of the guide rail pair formed by the slide rails and guide rails. It should also be understood that the guide rail pair is a precision kinematic pair. Furthermore, the slide rail is longer than the guide rail. When used with the relatively short pre-compression head at its lower stop, the straightness of the guide rail pair can still be maintained well thanks to the high-pair characteristics of the guide rail pair. Therefore, the overall pre-compression device of the cotton baler has higher reliability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main structure of a known cotton baling machine.

[0035] Figure 2 This is a schematic diagram of the pre-compression device of a known cotton baling machine.

[0036] Figure 3 This is a schematic diagram of a known cotton-blocking board structure.

[0037] Figure 4 This is a schematic diagram of a known preloaded inner beam structure equipped with guide wheel sets.

[0038] Figure 5 This is a schematic diagram of the main structure of a cotton baling machine in one embodiment.

[0039] Figure 6 This is a schematic diagram of the pre-compression device of a cotton baler in one embodiment.

[0040] Figure 7 This is a schematic diagram of the pre-compression device of a cotton baler equipped with a mounting beam in one embodiment.

[0041] Figure 8 This is a schematic diagram of a preloaded beam structure in one embodiment.

[0042] Figure 9 This is a schematic diagram of the guide section structure in one embodiment.

[0043] Figure 10 This is a schematic diagram of the cotton baffle structure in one embodiment.

[0044] Figure 11 This is a schematic diagram of the assembly structure of the cotton baffle and the cross arm in one embodiment.

[0045] In the diagram: 1. Main pressure side, 2. Pre-compression device for cotton baling machine, 3. Pre-compression side, 4. Pre-compression head, 5. Pre-compression inner beam, 6. Guide rod, 7. Pre-compression cylinder, 8. Top angle steel, 9. Baffle plate, 10. Lower fixing hole, 11. Reinforcing rib, 12. Upper fixing hole, 13. Lower guide wheel assembly, 14. Upper guide wheel assembly, 15. Through hole, 16. Guide part, 17. Pre-compression beam, 18. Mounting crossbeam, 19. Reinforcing fixing frame, 20. Foot, 21. Frame, 22. Middle cross frame, 23. Guide rail, 24. Upper cross frame, 25. Reinforcing fixing plate, 26. Vertical arm, 27. Reinforcing plate, 28. Horizontal arm, 29. Slide rail, 30. Mounting plate, 31. Short reinforcing rib, 32. Flanged edge, 33. Middle fixing hole, 34. Long groove. Detailed Implementation

[0046] like Figure 5 As shown in the figure, the main pressure side 1 and the pre-pressure side 3 are arranged side by side in the left-right direction, which is also called the transverse direction or the width direction.

[0047] Once the left-right direction is determined, the front-back direction is also determined. The front-back direction is also called the longitudinal direction, and front and back also correspond to head and tail, front and back, etc. For example, for the cotton baffle 9, the side used to guide the cotton is its front side, or front surface, and the side opposite to the front surface is the back side.

[0048] At the same time, the pre-compression and main compression of the packaging are both carried out from top to bottom, that is, the up and down direction is fixed, and the up and down direction is also called the height direction.

[0049] Given Figures 1-4 The known pre-compression device 2 for a cotton baler and its main components are clearly shown, and will not be repeated here unless otherwise specified. The pre-compression device 2 for a cotton baler based on this utility model embodiment is mainly aimed at… Figures 1-4 The pre-compression device 2 of a known cotton baler shown in the figure is improved.

[0050] for Figures 1-4 In addition to the problems mentioned in the background section, the known pre-compression device 2 of the cotton baler shown has a relatively large noise level in operation due to the rolling friction pair formed between the guide wheel and the guide rod 6.

[0051] The following technical issues also relate to other objectives of this utility model:

[0052] Figure 3 The diagram shows a known type of cotton baffle 9, which has an upper fixing hole 12 at the top and a lower fixing hole 10 at the bottom. This known cotton baffle 9 is fixed only at the top and bottom ends on the pre-compression device 2 of a cotton baling machine. It should be understood that the function of the cotton baffle 9 in the baling stage is to control the flow of cotton during compression. At this time, the cotton baffle 9 acts as a physical barrier, restricting the flow of cotton to non-target areas, such as rebound or side overflow, thus requiring relatively high rigidity. However, because the existing cotton baffle 9 only has two fixing points (top and bottom), it is easily deformed during the cotton compression stage.

[0053] In view of this, such as Figure 3 The known type of cotton baffle 9 shown often has reinforcing ribs 11 on its back side. The reinforcing ribs 11 extend in the vertical direction of the cotton baffle 9 and are approximately equal in length to the cotton baffle 9. Although the reinforcing ribs 11 can improve the rigidity of the cotton baffle 9 to some extent, they still cannot meet the expected requirements. This is the second technical problem.

[0054] Let's first consider the technical issues, namely the series of problems caused by the relatively low reliability of the pre-compression device 2 of the known cotton baler, which relies on the guide rod 6 for guidance.

[0055] In the embodiments of this utility model, the pre-compression device 2 of the cotton baler provided is guided by a guide rail pair. The guide rail component of the guide rail pair usually has a mounting base with relatively high rigidity, and the guide rod 6 is usually mostly suspended, with only the two ends fixed. Therefore, the reliability of the pre-compression device 2 of the cotton baler based on the embodiments of this utility model is relatively good.

[0056] Accordingly, the installation of the guide rail components mainly relies on two frames, one of which is Figures 6-8 The preload beam 17 shown in the figure has a main body of a gantry frame, and the inner sides of the two side frames 21 of the gantry frame, that is, the opposite sides of the side frames 21, are used as the mounting base for the guide rail 23.

[0057] The preloaded beam 17 is used as the mounting base for the guide rail 23. The support for the guide rail 23 can be a continuous support, rather than a support at only two ends like the guide rod 6. Therefore, the guide rail 23 is not prone to large elastic deformation in the working state.

[0058] Furthermore, the guide rail pair has a large mating surface area, making it suitable for heavy-duty applications. It also has relatively high reliability and relatively low operating noise.

[0059] Correspondingly, the two side frames 21 of the preload beam 17 are vertically arranged columns, and the two side frames 21 are arranged in parallel with each other. The side opposite to each other is the inner side of the side frame 21. The guide rail 23 is fixedly installed on the inner side of the side frame 21. Each side frame 21 has at least one guide rail component, and there can be two or three. When there are multiple guide rail components, the multiple guide rail components are parallel to each other.

[0060] The preload beam 17 also includes an upper horizontal frame 24 for connecting the two side frames 21 at the upper end, so that the preload beam 17 as a whole constitutes a gantry frame.

[0061] In addition, the lower end of the preload beam 17 must be fixedly connected, such as when it is installed on the body of the packing machine. That is, in the installed state, the preload beam 17 can be adapted to the part of the machine body to form a more stable rectangular frame.

[0062] In addition Figure 8 In the illustrated structure, without affecting the operation of the guide section 16, a middle horizontal frame 22 is also provided for interconnecting the two side frames 21 in the middle.

[0063] from Figure 8 As can be seen, guide rail 23 is located inside frame 21, while... Figure 6 and Figure 7 As can be seen, in the front-rear direction, the guide part 16 is located inside the preload beam 17, and the front and rear surfaces of the preload beam 17 can be used as... Figure 8 The mounting surface of the middle horizontal frame 22.

[0064] from Figure 8 Furthermore, it can be seen that the front and rear surfaces of the frame 21 of the preload beam 17 are provided with multiple sets of mounting holes for the installation of the middle cross frame 22, and a given number of middle cross frames 22 can be installed according to the stiffness requirements of the preload beam 17.

[0065] Obviously, the guide rail 23 is a vertically arranged guide rail, and its guidance of the guide part 16 is also vertical. In the embodiment of this utility model, the guide part 16 is also configured as a frame structure and is supported on both sides. Although some sections of the guide part 16 are suspended in the air during some stages of its downward movement, the guide part 16 can still maintain relatively good dynamic stiffness because it is a frame structure as a whole, rather than a single guide rod 6 that lacks mutual support. Obviously, the static stiffness of the guide part 16 itself is relatively easier to ensure.

[0066] Given that the guide part 16 is configured as an assembly, the part of it that mates with the guide rails 23 located on both sides is called the vertical arm 26, and the part mounted on the vertical arm 26 to directly mate with the guide rails 23 to form a guide rail pair is called the slide rail 29. Obviously, based on the vertical arrangement of the guide rails 23, the vertical arm 26 and the slide rail 29 mounted on the vertical arm 26 are also vertically arranged.

[0067] The two vertical arms 26 are arranged in parallel and connected to each other to form an assembly. The connection between the two vertical arms 26 only needs to avoid the pre-pressure cylinder 7. The pre-pressure cylinder 7 is approximately located in the middle of the horizontal section of the guide part 16. Therefore, a connecting body for connecting the two vertical arms 26 can be constructed at the position that avoids the pre-pressure cylinder 7.

[0068] exist Figure 9 In the illustrated structure, the front sides of the two vertical arms 26 are connected to the cotton baffle 9. In addition to blocking the cotton, the cotton baffle 9 also serves as a connecting component between the two vertical arms 26.

[0069] Furthermore, in Figure 9 and Figure 11 As can be seen, several horizontal arms 28 are provided between the two vertical arms 26. The horizontal arms 28 are fixedly connected to the two vertical arms 26 and the cotton baffle 9, so that the guide part is constructed as a relatively reliable assembly, and the overall rigidity is very easy to ensure.

[0070] In particular, since the cotton baffle 9 has multiple supports provided by the cross arm 28 in addition to the supports at both ends, the rigidity of the cotton baffle 9 is easy to ensure.

[0071] Furthermore, the length of the slide rail 29 is greater than the length of the guide rail 23. Under this condition, when the guide part 16 with the slide rail 29 reaches its lower stop point, it can still have a relatively long mating section with the guide rail 23. Correspondingly, when the guide part 16 reaches its upper stop point, part of the slide rail 29 protrudes from the upper end of the guide rail 23. For ease of description, this protruding part is called the reserved section.

[0072] The length of the reserved section determines the minimum length of the mating section, and the minimum length of the mating section determines the stability of the guide section 16 when it runs to the bottom stop. Therefore, based on the relatively short guide rail 23, the length of the reserved section should not be less than one-eighth of the length of the guide rail 23, but the reserved section should not be too long, generally not more than one-fifth of the length of the guide rail 23.

[0073] See Figure 6 , Figure 6 In the shown state, the preload head 4 is at its top dead center, and at this time, part of the guide section 16 protrudes from the upper end of the preload beam 17. Meanwhile... Figure 7In the process, the pre-compression head 4 moves downward a certain distance under the push of the pre-compression cylinder 7. At this time, part of the slide rail 29 protrudes from the lower end of the guide rail 23 and disengages from the guide rail 23. As the slide rail 29 moves further downward, the mating section remains unchanged, but the overhang length of the slide rail 29 increases until the upper end of the slide rail 29 is aligned with the upper end of the guide rail 23. As the slide rail 29 moves further downward, the mating section gradually decreases until the pre-compression head 4 reaches the lower limit of its working stroke. At this point, the mating section is at its minimum, and the downward overhang of the slide rail 29 is at its maximum. The length of the reserved section determines the length of the current mating section. A relatively long mating section can ensure the stability of the guide rail pair at this time.

[0074] Correspondingly, the pre-compression head 4 is fixedly installed at the lower end of the vertical arm 26. The pre-compression head 4, the vertical arm 26, the horizontal arm 28, the slide rail 29 and the cotton baffle 9 are assembled into a single assembly, which has relatively good overall rigidity.

[0075] The pre-compression cylinder 7 is a standard feature; its cylinder body can be fixed to the pre-compression beam 17 or to the frame of the baling machine. The downward-extending push rod of the pre-compression cylinder 7 is fixedly connected to the pre-compression head 4.

[0076] exist Figure 7 In the illustrated structure, a mounting seat protrudes inward from the middle of the mounting beam 18 for mounting the preload cylinder 7. To reduce interference points, the preload cylinder 7 can be fixed to the mounting seat simply by means of unilateral fixation, and the amount of inward overhang of the mounting seat will be very small.

[0077] The mounting base can also be constructed as a mounting plate with a through hole, the lower end of the cylinder body of the preload cylinder 7 is fixed on the mounting plate, and its push rod can descend through the through hole.

[0078] Since this utility model does not propose any improvement to the fixing method of the pre-pressure cylinder 7 and the pre-pressure head 4, the above mainly considers the part of the utility model that is improved and suitable for the installation of the pre-pressure cylinder 7. Similarly, in the following text, for the parts that are not improved, those skilled in the art can use existing structures or constructions, which will not be described in detail here.

[0079] The following describes the improvements related to this utility model. As mentioned earlier, due to the presence of a reserved section, motion interference needs to be considered. Based on the motion pattern of the slide rail 29, it is known that it moves in the vertical direction. Therefore, the preload beam 17 only needs to clear the vertical direction and guide the slide rail 29 on both sides. First, let's look at the upper horizontal frame 24. Figure 8 In the illustrated structure, the upper horizontal frame 24 forms a rectangular frame, and the rectangular opening corresponding to this rectangular frame is used at least for the clearance of the reserved segment moving upwards.

[0080] Figure 8In the middle, the upper horizontal frame 24 also adopts a steel component, such as a channel steel component, at the front and back. The channel steel component is connected to the front and back sides of the upper end of the frame 21 to form the upper horizontal frame 24 with a rectangular opening.

[0081] The connection between the steel component and the upper end of the frame 21 can be welding, riveting, or bolting, with riveting being the preferred method.

[0082] As for the middle horizontal frame 22, like the aforementioned upper horizontal frame 24, it can be fixedly connected to the frame 21 by welding, riveting, or bolting.

[0083] The middle horizontal frame 22 can also be made of steel components, such as channel steel components.

[0084] For the purpose of avoiding the guide part 16, the upper horizontal frame 24 and the middle horizontal frame 22 are fixed to the front and rear sides of the frame 21 using steel components as described above. In this case, the frame 21 is larger than the guide part 16 in the front and rear direction, so the space enclosed by the equilateral side frame of the middle horizontal frame 22 accommodates the guide part 16.

[0085] Next, let's look at the preload beam 17. The preload beam 17 is a statically determinate frame and is installed on the upper part of the frame of the packing machine. Figure 8 In the middle, the lower end of the frame 21 has a welded foot 20, which allows the preload beam 17 to be installed on the upper part of the packing machine frame by means of bolt connection.

[0086] The frame 21 is installed using the feet 20 as a basic mounting. Figure 8 In the middle, the foot 20 is a horizontal plate structure. The foot 20 is welded to the lower end of the frame 21. The foot 20 extends outward and forms a right-angle space with the outer side of the frame 21. A right-angled triangular side reinforcing plate is also welded in this right-angle space to improve the overall strength and lateral stability.

[0087] The mounting position of the base 20 is designated as the first mounting position. Considering the overall rigidity, in a more preferred embodiment, the frame 21 can also be auxiliaryly mounted to improve the overall stability of the installation. Figure 8 In the illustrated structure, a reinforcing fixing plate 25 is also provided on the lower side of the frame 21. If the frame 21 itself has high strength, the reinforcing fixing plate 25 can be omitted.

[0088] Furthermore, a mounting beam 18 is adapted to the position of the reinforcing fixing plate 25. The mounting beam 18 is fixed to the frame of the packaging machine and has mounting holes that penetrate through the mounting beam 18 in the vertical direction.

[0089] Accordingly, the lower part of the preload beam 17 is fitted into the mounting seat hole, and the corresponding frame 21 is fixedly connected to the mounting crossbeam 18 to form a second mounting position. This second mounting position is higher than the first mounting position, so that the first mounting position and the second mounting position form a composite mounting structure, so that the assembly structure of the preload beam 17 on the packing machine is relatively reliable.

[0090] The fixing between the frame 21 of the preload beam 17 and the installation crossbeam 18 is mainly by bolt connection. Figure 7 The invention includes a reinforcing bracket 19, which is a corner piece and has a base plate and a vertical plate. Accordingly, the vertical plate of the reinforcing bracket 19 is connected to... Figure 8 The reinforcing plates 25 shown in the illustration are connected by bolts, and the base plate of the reinforcing bracket 19 is welded, riveted or bolted to the upper surface of the mounting beam 18.

[0091] In addition, the reinforcing bracket 19 can be a simple upright plate that is directly welded to the mounting beam 18, or formed by bending the upper panel of the mounting beam 18 upwards.

[0092] The guide rail pair is preferably a lubricant-free guide rail pair to avoid lubricant contamination of the cotton lint. Lubricant-free guide rail pairs are mainly made of engineering plastics, but can also be copper-based sliding surface guide rail pairs.

[0093] It should be noted that, regardless of the type of lubricant-free guide rail pair, the key point is that the guide rail surface is a lubricant-free guide rail pair construction surface. For example, the base part of guide rail 23 or slide rail 29 can still be made of metal, and its surface can be fitted with, for example, polytetrafluoroethylene sliding plates or tin bronze sliding plates.

[0094] Next, let's look at the improvements to the cotton baffle 9. Regarding the known cotton baffle 9, its shortcomings were specifically explained earlier, mainly that while the support points are relatively good, it is prone to deformation during pre-compression. Figure 10 In the illustrated structure, the middle and upper parts of the cotton baffle 9 are provided with central fixing holes 33; correspondingly, a number of cross arms 28 are installed on the back side of the cotton baffle 9 through the central fixing holes 33; the main function of the cross arms 28 is to reinforce the cotton baffle 9.

[0095] Horizontal arm 28 Figure 1 The main components are rectangular tubes, corner pieces, or channel steel members sealed at both ends with end plates. The horizontal arm 28 can be fixed to the cotton baffle plate 9 by riveting or bolting. Screw holes can also be opened on the end plates at both ends of the horizontal arm 28 to fix it to the vertical arm 26 on the corresponding side with screws, so that the vertical arm 26 can be assembled with the cotton baffle plate 9 through the horizontal arm 28 to form an assembly with relatively high structural rigidity.

[0096] In addition, the two ends of the horizontal arm 28 can be welded to the vertical arm 26. In this case, the horizontal arm 28 can be made of steel components such as rectangular tubes, angle steel or channel steel, and end plates are no longer required.

[0097] Furthermore, in order to improve the overall structural stiffness, Figure 9 The illustrated structure also includes a straight groove for avoiding the hook holder, such as... Figure 11 The elongated groove 34 shown is a standard structure of the cotton baffle 9 and will not be described further here. The lower part of the cotton baffle 9 has several additional vertical reinforcing ribs, the length of which is greater than the length of the straight groove, but much smaller. Figure 3 The length of the reinforcing rib 11, therefore in Figure 11 The middle part is represented as short reinforcing rib 31.

[0098] The use of relatively short reinforcing ribs 31 is mainly to avoid assembly interference with the cross arm 28. At this time, the upper end of the short reinforcing rib 31 is approximately engaged with or detached from the lower surface of the bottommost cross arm 28 by a certain distance, which is no more than 10mm.

[0099] Furthermore, in order to improve the overall stiffness, in Figure 10 In the illustrated structure, the left and right sides of the cotton baffle 9 have flanges 32, and the flanges 32 are turned up towards the back of the cotton baffle 9.

[0100] In addition, Figure 9 In the illustrated structure, the cotton baffle 9 extends downward beyond the lower surface of the mounting plate 30, so that the extended portion of the cotton baffle 9 can be fixedly connected to the front side of the pre-press head 4 by means of screw connection or riveting.

[0101] exist Figure 9 In the illustrated structure, several reinforcing plates 27 are provided between the two vertical arms 26. The middle part of the reinforcing plate 27 in the figure is a V-shaped groove to avoid the pre-pressure cylinder 7.

Claims

1. A pre-compression device for a cotton baling machine, characterized in that, include: The preload beam includes two parallel and vertically arranged side frames, and an upper horizontal frame for connecting the two side frames at the top; wherein the two side frames are provided with vertical guide rails on opposite sides. The guide section includes two vertical arms that are parallel to each other and arranged vertically, and cotton baffles on both sides that are connected to the vertical arms respectively; wherein, the two vertical arms are provided with slide rails that cooperate with the corresponding side guide rails to form a guide rail pair; the length of the slide rail is greater than the length of the guide rail, and when the guide section is at the upper stop point, part of the slide rail protrudes from the upper end of the guide rail, forming a reserved section; The preload head is fixedly installed at the lower end of the vertical arm; and A pre-compression cylinder, the cylinder body of which is fixedly installed on the pre-compression beam or the frame of the baling machine, and the downwardly extending push rod of the pre-compression cylinder is fixedly connected to the pre-compression head.

2. The pre-compression device for a cotton baling machine according to claim 1, characterized in that, The length of the reserved section is one-eighth to one-fifth of the length of the guide rail.

3. The pre-compression device for a cotton baler according to claim 1 or 2, characterized in that, The upper horizontal frame is a rectangular frame, and the rectangular opening corresponding to the rectangular frame is used at least for the clearance of the reserved section moving upwards.

4. The pre-compression device for a cotton baling machine according to claim 1, characterized in that, The preloaded beam has a middle horizontal frame for interconnecting the two side frames; The corresponding horizontal frame has a front horizontal frame and a back horizontal frame, which are connected to the front or back of the frame respectively.

5. The pre-compression device for a cotton baling machine according to claim 1, characterized in that, The lower end of the preload beam is provided with a foot for mounting the preload beam on the frame of the baling machine, forming a first installation position; An additional mounting beam is provided, which has mounting holes extending through the beam in the vertical direction; the mounting beam is correspondingly fixed to the frame of the baling machine. The lower part of the preloaded beam is fitted into the mounting seat hole, and the corresponding frame is fixedly connected to the mounting crossbeam to form a second mounting position, which is higher than the first mounting position.

6. The pre-compression device for a cotton baling machine according to claim 1, characterized in that, The guide rail pair is a lubricant-free guide rail pair.

7. The pre-compression device for a cotton baling machine according to claim 1, characterized in that, The cotton baffle has central fixing holes arranged in the middle and upper parts; Accordingly, several cross arms are installed on the back side of the cotton-blocking plate through the central fixing hole; The two ends of the horizontal arm are fixed to the vertical arm accordingly.

8. The pre-compression device for a cotton baling machine according to claim 7, characterized in that, The lower part of the cotton-blocking plate, which includes a straight groove for avoiding the hook holder, is provided with several additional vertical reinforcing ribs, and the length of the additional reinforcing ribs is greater than the length of the straight groove.

9. The pre-compression device for a cotton baling machine according to claim 1, 7, or 8, characterized in that, The cotton baffle has flanges on its left and right sides; The lower back of the cotton baffle is fixedly connected to the front of the pre-press head; Several reinforcing plates are also installed between the two vertical arms.

10. A packaging machine, characterized in that, Includes the pre-compression device for cotton baling machines as described in any one of claims 1 to 9.

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