Double-layer high-position roller device

Abstract

The invention relates to the technical field of computerized flat knitting machines, in particular to a double-layer high-position roller device which comprises an upper roller body and a lower roller body, driving end shafts are coaxially fixed to the two ends of a driving rod of each roller body, and driven end shafts are fixed to the two ends of a driven rod of each roller body. The driving end shaft and the driven end shaft are rotationally connected with a roller side plate of the roller main body through a second bearing; the driving end shaft and the driven end shaft are in axial sliding connection with an inner ring of the second bearing; the two roller bodies are both arranged between the left end plate and the right end plate, and the driving end shafts at the left ends and the right ends of the roller bodies penetrate through the roller side plates through the second bearings and then are rotationally connected with the left end plate and the right end plate through the first bearings correspondingly. Compared with the prior art, the replacement difficulty of the roller rubber sheet is greatly reduced, and the replacement efficiency of the roller rubber sheet is improved.

Description

Technical Field

[0001] The invention relates to the technical field of computerized flat knitting machines, in particular to a double-layer high-position roller device. Background Art

[0002] Computerized flat knitting machine is a double needle plate latch needle weft knitting loom. Its cam device is like a set of flat cams. The needle feet of the knitting needle can enter the groove of the cam, move the cam, force the knitting needle to make regular up and down movements in the needle groove of the needle plate, and through the action of the needle hook and the needle tongue, the yarn can be knitted into a knitted fabric. During the rising process of the knitting needle, the coil gradually withdraws from the needle hook, opens the needle tongue, and withdraws the needle tongue to hang on the needle bar; during the descent of the knitting needle, the needle hook hooks the newly placed yarn and pulls it to bend into a coil, while the original coil is out of the needle hook, and the new coil passes through the old coil and is connected in series with the old coil. The coil strings formed by numerous knittings are connected to each other to form a knitted fabric.

[0003] The high rollers rotate in opposite directions through the synchronous rotation of the active rod and the passive rod, and the fabric clamped in the middle of the roller rods is pulled downward. This pulling action helps to achieve stable control of the fabric and ensure the quality and stability of the fabric during the weaving process.

[0004] The Chinese invention patent with announcement number CN107630281B discloses a double-layer high-position roller device, including an upper high-position roller mechanism and a lower high-position roller mechanism, the upper high-position roller mechanism and the lower high-position roller mechanism are respectively located at two ends of a computer flat knitting machine, the upper high-position roller mechanism is installed on an upper roller bracket at one end of the computer flat knitting machine, and the lower high-position roller mechanism is installed on a lower roller bracket at the other end of the computer flat knitting machine, the upper high-position roller mechanism is located above the lower high-position roller mechanism, the upper roller driving gear in the upper high-position roller mechanism is located on the upper roller bracket, and the lower roller driving gear in the lower high-position roller mechanism is located on the lower roller bracket. The double-layer high-position roller device of the present invention has the advantages of a large traction adjustment range, a wide range of adaptability, and lower cost.

[0005] However, the above double-layer high-position roller device still has the following shortcomings during use:

[0006] The roller rubber of the roller device will wear out during use, but the replacement of the roller rubber in the technical solution recorded in the above patent is very inconvenient. The specific reason is that the roller rubber is arranged between two roller brackets, and the distance between the two roller brackets cannot be adjusted, resulting in the roller active rod being unable to be removed from between the two roller brackets, which in turn makes the replacement of the roller rubber difficult. Summary of the invention

[0007] The object of the present invention is to provide a double-layer high-position roller device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a double-layer high-position roller device, comprising two roller bodies arranged in upper and lower positions, wherein both ends of the active rod of the roller body are coaxially fixed with active end shafts, and both ends of the driven rod of the roller body are fixed with driven end shafts, and the active end shaft and the driven end shaft are both rotatably connected to the roller side plate of the roller body through a second bearing;

[0009] The driving end shaft and the driven end shaft are axially slidably connected to the inner ring of the second bearing;

[0010] The two roller bodies are both arranged between the left end plate and the right end plate, and the active end shafts at the left and right ends of the roller body are respectively rotatably connected to the left end plate and the right end plate through the first bearing after passing through the roller side plate through the second bearing;

[0011] The active end shaft and the inner ring of the first bearing are axially slidably connected;

[0012] The left end plate and the right end plate are both arranged between the left fixed plate and the right fixed plate, and the fixed plate and the right fixed plate are both fixedly mounted on the computer flat knitting machine;

[0013] The fixed plate is rotatably connected to four power input shafts which are coaxially arranged with the four driving end shafts respectively;

[0014] The right end plate is provided with a pushing mechanism for pushing the roller body to move axially along the active rod;

[0015] The pushing mechanism is used to push the roller body to move leftward, so that any one of the two active end shafts located at the left end of the roller body is connected in transmission with the corresponding power input shaft.

[0016] Preferably, a limiting ring is sleeved and fixed on the active end shaft, and the outer diameter of the limiting ring is less than or equal to the outer diameter of the second bearing inner ring.

[0017] Preferably, the inner circumferential surface of the second bearing inner ring is provided with a second slot arranged in an annular shape;

[0018] A first slot arranged in an annular shape is provided on the inner circumferential surface of the first bearing inner ring;

[0019] Wings matching the first slot and the second slot are fixed on the outer circumferential surfaces of the driving end shaft and the driven end shaft.

[0020] Preferably, the width of the wing gradually narrows in a direction gradually away from the active rod;

[0021] The width of the large opening end of the first slot is smaller than the width of the small opening end of the second slot.

[0022] Preferably, two bottom support rods are fixedly connected between the bottom of the fixing plate and the right fixing plate, and rear end of the fixing plate and the right fixing plate are fixed with rear stop rods.

[0023] Preferably, a transmission groove is provided at one end of the active end shaft;

[0024] The power input shaft comprises a circular shaft and a first prism, and the first prism is matched with the transmission groove.

[0025] Preferably, four connecting rods are fixedly connected between the left end plate and the right end plate, and the four connecting rods are respectively located below the four active rods;

[0026] A scraper is fixed on the top of the connecting rod.

[0027] Preferably, four U-shaped seats are fixed on two adjacent side surfaces of the left end plate and the right end plate, and two ends of the connecting rod are respectively placed on the corresponding U-shaped seats;

[0028] The front and rear sides of the U-shaped seat are both plugged with obliquely arranged plug pins, and one end of the plug pin extends to the inside of the connecting rod.

[0029] Preferably, the pushing mechanism comprises a telescopic cylinder, a push plate and four second prisms;

[0030] The telescopic cylinder is mounted on the right fixed plate;

[0031] The push plate is fixed to the free end of the piston rod of the telescopic cylinder;

[0032] The four second prisms are all rotatably connected to the push plate via a third bearing.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a pushing mechanism. When the pushing mechanism moves the overall structure composed of the roller body and the left and right end plates to the leftmost end, the stepper motor can directly drive the roller rubbers of the two roller bodies to rotate through the power input shaft, thereby generating a pulling force for pulling the fabric downward. When the pushing mechanism itself moves to the rightmost end, the overall structure composed of the roller body and the left and right end plates can be disassembled and taken out from between the fixed plate and the right fixed plate. Then, by making the active end shaft and the inner ring of the first bearing axially slidingly connected, the roller body can be easily disassembled from between the left and right end plates. Further, by making the active end shaft and the driven end shaft and the inner ring of the second bearing axially slidingly connected, the active rod and the driven rod and the roller rubber can be easily disassembled from between the two roller side plates. After that, the roller rubber can be removed from the active rod and the driven rod for replacement. The difficulty of replacing the roller rubber has been greatly reduced compared with the prior art, which is beneficial to improving the replacement efficiency of the roller rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic structural diagram of the bottom support rod, the left fixing plate and the right fixing plate of the present invention;

[0037] Figure 3 It is a schematic structural diagram of the left fixing plate, the right fixing plate, the bottom support rod and the rear stop rod of the present invention;

[0038] Figure 4 It is a structural schematic diagram of the push mechanism of the present invention;

[0039] Figure 5 It is a schematic diagram of the structure of the power input shaft of the present invention;

[0040] Figure 6 It is a schematic diagram of the partial structure of the roller body of the present invention;

[0041] Figure 7 For the present invention Figure 6 The schematic diagram of the structure behind the hidden power input shaft;

[0042] Figure 8 It is a schematic diagram of the structure of the active end shaft and the first bearing and the second bearing of the present invention;

[0043] Fig. 9 It is a top view cross-section of the first bearing, the second bearing and a top view structural schematic diagram of the active end shaft of the present invention;

[0044] Fig.10 It is a side view structural schematic diagram of the roller body of the present invention;

[0045] Fig.11 It is a schematic diagram of the cross-sectional structure of the U-shaped seat of the present invention.

[0046] In the figure:

[0047] 11. Left fixed plate; 12. Right fixed plate; 13. Bottom support rod; 14. Rear stop rod;

[0048] 2. roller body; 21. active rod; 211. active end shaft; 2111. transmission groove; 22. driven rod; 221. driven end shaft; 23. roller side plate;

[0049] 31. left end plate; 32. right end plate; 33. connecting rod; 331. first oblique hole; 34. U-shaped seat; 341. second oblique hole; 35. scraper; 36. latch; 361. pull ring; 37. magnet block;

[0050] 4. power input shaft; 41. circular shaft; 42. first prism;

[0051] 51. telescopic cylinder; 52. push plate; 53. second prism; 54. third bearing;

[0052] 61. First bearing; 611. First slot; 6111. Large end; 62. Second bearing; 621. Second slot; 6211. Small end; 63. Limit ring; 64. Wing. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figure 1-Figure 11 , the present invention provides a technical solution:

[0055] A double-layer high-position roller device, such as Figure 1 , Figure 2 and Fig.10 As shown, it includes two roller bodies 2 arranged in upper and lower positions, as shown in FIG. Figure 1-Figure 11As shown, both ends of the active rod 21 of the roller body 2 are coaxially fixed with an active end shaft 211, and both ends of the driven rod 22 of the roller body 2 are fixed with a driven end shaft 221, and the active end shaft 211 and the driven end shaft 221 are rotatably connected to the roller side plate 23 of the roller body 2 through the second bearing 62; the roller rubber sleeve is arranged on the outside of the active rod 21 and the driven rod 22, and the two roller rubbers on the same roller body 2 can rotate synchronously in opposite directions, so as to pull down the fabric located between the two roller rubbers, wherein the two roller bodies 2 are respectively controlled by two stepping motors, and the above descriptions are all existing technologies and will not be repeated here.

[0056] The active end shaft 211 and the driven end shaft 221 are axially slidably connected to the inner ring of the second bearing 62, and the outer ring of the second bearing 62 is clamped and fixed to the roller side plate 23. The purpose of such arrangement is to allow the active end shaft 211 and the driven end shaft 221 to slide along the axial direction of the second bearing 62. During installation, the active end shaft 211 and the driven end shaft 221 are directly slidably inserted into the inner rings of the second bearing 62 respectively corresponding to each other. During disassembly, the active end shaft 211 and the driven end shaft 221 are directly slidably pulled out from the inner rings of the second bearing 62 respectively corresponding to each other. This facilitates the installation and disassembly operations between the active rod 21 and the roller side plate 23 and between the driven rod 22 and the roller side plate 23.

[0057] As can be seen from the figure, the two roller bodies 2 are both arranged between the left end plate 31 and the right end plate 32. The active end shafts 211 at the left and right ends of the roller body 2 are rotatably connected to the left end plate 31 and the right end plate 32 respectively through the first bearing 61 after passing through the roller side plate 23 through the second bearing 62; further, the active end shaft 211 and the inner ring of the first bearing 61 are axially slidingly connected, and the axial sliding connection here means that the active end shaft 211 can be slid out of the inner ring of the first bearing 61 or the active end shaft 211 can be directly slidably inserted into the inner ring of the first bearing 61, so that during installation, the active end shaft 211 is directly slidably inserted into the inner ring of the first bearing 61, and during disassembly, the active end shaft 211 is directly slidably pulled out from the inner ring of the first bearing 61, thereby facilitating the installation and disassembly operations between the left end plate 31 and the active end shaft 211 and between the right end plate 32 and the active end shaft 211.

[0058] As can be seen from the figure, the left end plate 31 and the right end plate 32 are both arranged between the left fixed plate 11 and the right fixed plate 12. In the present invention, the fixed plate 11 and the right fixed plate 12 are both fixedly mounted on the computer flat knitting machine (not shown in the figure).

[0059] Four power input shafts 4 coaxially arranged with the four active end shafts 211 are rotatably connected on the fixed plate 11. The rotational connection between the power input shaft 4 and the fixed plate 11 can be achieved by bearings, and the specific bearing model is not specifically limited here. Two power input shafts 4 among the four power input shafts 4 are driven by the two stepping motors mentioned above, respectively. Specifically, the two power input shafts 4 belong to the two roller bodies 2 respectively; a pushing mechanism for pushing the roller body 2 to move axially along the active rod 21 is provided on the right end plate 32; the pushing mechanism is used to push the roller body 2 to move left, so that any one of the two active end shafts 211 located at the left end of the roller body 2 is connected to the corresponding power input shaft 4 in transmission; specifically, the pushing mechanism can push the roller body 2 and The overall structure composed of the left end plate 31 and the right end plate 32 moves from right to left until each roller body 2 has a driving end shaft 211 that is transmission-connected with the power input shaft 4 coaxially arranged therewith. The transmission connection here means that the power input shaft 4 can directly drive the driving end shaft 211 connected thereto to rotate together; when the pushing mechanism moves the overall structure composed of the roller body 2 and the left end plate 31 and the right end plate 32 to the leftmost end, the stepper motor can directly drive the roller rubber of the two roller bodies 2 to rotate through the power input shaft 4, thereby generating a pulling force to pull the fabric downward, and when the pushing mechanism itself moves to the rightmost end, the overall structure composed of the roller body 2 and the left end plate 31 and the right end plate 32 can be disassembled and removed from between the fixed plate 11 and the right fixed plate 12.

[0060] In the above scheme, by means of the set pushing mechanism, when the pushing mechanism moves the integral structure consisting of the roller body 2 and the left end plate 31 and the right end plate 32 to the leftmost end, the stepper motor can directly drive the roller rubber of the two roller bodies 2 to rotate through the power input shaft 4, thereby generating a pulling force to pull the fabric downward, and when the pushing mechanism itself moves to the rightmost end, the integral structure consisting of the roller body 2 and the left end plate 31 and the right end plate 32 can be disassembled and removed from between the fixed plate 11 and the right fixed plate 12; then, by making the active end shaft 211 and the first bearing 61 The inner rings are axially slidably connected, so that the roller body 2 can be easily removed from between the left end plate 31 and the right end plate 32. Further, by making the active end shaft 211 and the driven end shaft 221 axially slidably connected to the inner ring of the second bearing 62, the active rod 21 and the driven rod 22 and the roller rubber can be easily removed from between the two roller side plates 23. Thereafter, the roller rubber can be removed from the active rod 21 and the driven rod 22 for replacement. The difficulty of replacing the roller rubber has been greatly reduced compared with the prior art, which is beneficial to improving the replacement efficiency of the roller rubber.

[0061] like Figure 6 and Figure 7As shown, each roller side plate 23 is provided with three hemispherical protrusions on a side away from the active rod 21, and the spherical surface of the hemispherical protrusion abuts against the left end plate 31 or the right end plate 32 adjacent thereto, thereby preventing the roller side plate 23 from sliding along the active end shaft 211 and the driven end shaft 221 to gradually move away from the active rod 21, and the spherical surface of the hemispherical protrusion is a smooth surface, which reduces the friction between the roller side plate 23 and the left end plate 31 or the right end plate 32.

[0062] A limiting ring 63 is fixedly sleeved on the active end shaft 211. The outer diameter of the limiting ring 63 is less than or equal to the outer diameter of the inner ring of the second bearing 62. The limiting ring 63 is used to push the roller side plate 23. It cooperates with the hemispherical protrusion to limit the position of the roller side plate 23 to ensure that the roller side plate 23 will not slide along the axial direction of the active end shaft 211 when the roller body 2 is working.

[0063] like Figure 8 and Fig. 9 As shown, the inner circumference of the inner ring of the second bearing 62 is provided with a second slot 621 arranged in an annular shape; the inner circumference of the inner ring of the first bearing 61 is provided with a first slot 611 arranged in an annular shape; the outer circumference of the driving end shaft 211 and the driven end shaft 221 are fixed with fins 64 adapted to the first slot 611 and the second slot 621. During installation, the fins 64 are inserted into the inside of the first slot 611 and the second slot 621. Through the provided fins 64 and the corresponding first slots 611 and second slots 621, the driving end shaft 211 and the driven end shaft 221 can drive the inner ring of the first bearing 61 and the inner ring of the second bearing 62 to rotate synchronously. step rotation; further, along the direction gradually away from the active rod 21, the width of the wing 64 gradually narrows, so that when the active end shaft 211 and the driven end shaft 221 are installed, the wing 64 can be more easily inserted into the first slot 611 and the second slot 621; the width of the large end 6111 of the first slot 611 is smaller than the width of the small end 6211 of the second slot 621; the width of the wing 64 refers to the circumferential width of the wing 64 on the active end shaft 211 and the driven end shaft 221. Similarly, the width of the first slot 611 and the width of the second slot 621 refer to their respective corresponding inner ring circumferential widths.

[0064] Two bottom support rods 13 are fixedly connected between the bottom of the fixed plate 11 and the right fixed plate 12, and rear blocking rods 14 are fixed to the rear ends of the fixed plate 11 and the right fixed plate 12. As shown in the figure, the bottom surfaces of the left end plate 31 and the right end plate 32 are in contact with the two bottom support rods 13, and the bottom support rods 13 are cylindrical rods. The friction between them and the left end plate 31 and the right end plate 32 is small, which makes it easy to push the overall structure composed of the roller body 2 and the left end plate 31 and the right end plate 32 from front to back on the bottom support rods 13 (that is, to install the roller body 2), or to pull the overall structure composed of the roller body 2 and the left end plate 31 and the right end plate 32 from back to front on the bottom support rods 13. structure (that is, disassembling the roller body 2); the reason is that in the current computer flat knitting machine, the roller body 2 needs to open the front bed needle plate before disassembly, and then the roller body 2 is disassembled by opening the gap left by the front bed needle plate; the rear stop rod 14 is used to limit the maximum position of the overall structure composed of the roller body 2 and the left end plate 31 and the right end plate 32 to move backward, the bottom support rod 13 cooperates with the rear stop rod 14, when the rear end faces of the left end plate 31 and the right end plate 32 are abutted against the rear stop rod 14, the power input shaft 4 and the corresponding active end shaft 211 are exactly coaxially corresponding, and then it is only necessary to push the active end shaft 211 and the power input shaft 4 for transmission connection through the pushing mechanism.

[0065] The transmission connection structure and principle of the active end shaft 211 and the power input shaft 4 are as follows: a transmission groove 2111 is opened at one end of the active end shaft 211; the power input shaft 4 includes a circular shaft 41 and a first prism 42, and the first prism 42 and the transmission groove 2111 are matched with each other; in this embodiment, the first prism 42 is a regular octagonal column, and the transmission groove 2111 is a regular octagonal groove corresponding to the first prism 42. When the first prism 42 is coaxially inserted into the transmission groove 2111, the active end shaft 211 and the power input shaft 4 are transmission connected.

[0066] Four connecting rods 33 are fixedly connected between the left end plate 31 and the right end plate 32, and the four connecting rods 33 are respectively located below the four active rods 21; wherein, the connecting rod 33 is used to connect the left end plate 31 and the right end plate 32 to prevent the left end plate 31 and the right end plate 32 from sliding freely on the active end shaft 211; a scraper 35 is fixed on the top of the connecting rod 33, and the scraper 35 has the function of preventing the fabric from being entangled on the roller rubber.

[0067] Four U-shaped seats 34 are fixed on the two adjacent side surfaces of the left end plate 31 and the right end plate 32, and the two ends of the connecting rod 33 are respectively placed on the corresponding U-shaped seats 34; the front and rear sides of the U-shaped seat 34 are plugged with inclined pins 36, one end of the pin 36 extends to the inside of the connecting rod 33, specifically, the front and rear sides of the U-shaped seat 34 are provided with second inclined holes 341, and the front and rear sides of the connecting rod 33 located in the inner part of the U-shaped seat 34 are provided with first inclined holes 331, the pin 36 is plugged into the inclined channel formed by the corresponding second inclined holes 341 and the first inclined holes 331, and a magnet block 37 is fixedly installed at the bottom of the first inclined hole 331 for magnetically attracting the pin 36, and a pull ring 361 is hinged at the end of the pin 36 away from the magnet block 37.

[0068] The pushing mechanism includes a telescopic cylinder 51, a push plate 52 and four second prisms 53; the telescopic cylinder 51 is installed on the right fixed plate 12; the push plate 52 is fixed to the free end of the piston rod of the telescopic cylinder 51; the four second prisms 53 are all rotatably connected to the push plate 52 through a third bearing 54. Specifically, a transmission groove 2111 is also provided on the end face of the active end shaft 211 located at the right end of the roller body 2, and the transmission groove 2111 matches the second prism 53, so that when the second prism 53 is inserted into the transmission groove 2111, the second prism 53 and the active end shaft 211 located at the right end of the roller body 2 are also transmission connected.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer high-position roller device, comprising two roller bodies arranged in upper and lower positions, wherein both ends of the active rod of the roller body are coaxially fixed with active end shafts, and both ends of the driven rod of the roller body are fixed with driven end shafts, and the active end shaft and the driven end shaft are rotatably connected to the roller side plate of the roller body through a second bearing; characterized in that: The driving end shaft and the driven end shaft are axially slidably connected to the inner ring of the second bearing; The two roller bodies are both arranged between the left end plate and the right end plate, and the active end shafts at the left and right ends of the roller body are respectively rotatably connected to the left end plate and the right end plate through the first bearing after passing through the roller side plate through the second bearing; The active end shaft and the inner ring of the first bearing are axially slidably connected; The left end plate and the right end plate are both arranged between the left fixed plate and the right fixed plate, and the fixed plate and the right fixed plate are both fixedly mounted on the computer flat knitting machine; The fixed plate is rotatably connected to four power input shafts which are coaxially arranged with the four driving end shafts respectively; The right end plate is provided with a pushing mechanism for pushing the roller body to move axially along the active rod; The pushing mechanism is used to push the roller body to move leftward, so that any one of the two active end shafts located at the left end of the roller body is connected in transmission with the corresponding power input shaft.

2. A double-layer high-position roller device according to claim 1, characterized in that: A limiting ring is sleeved and fixed on the active end shaft, and the outer diameter of the limiting ring is less than or equal to the outer diameter of the inner ring of the second bearing.

3. A double-layer high-position roller device according to claim 1 or 2, characterized in that: The inner circumference of the second bearing inner ring is provided with a second slot arranged in an annular shape; A first slot arranged in an annular shape is provided on the inner circumferential surface of the first bearing inner ring; Wings matching the first slot and the second slot are fixed on the outer circumferential surfaces of the driving end shaft and the driven end shaft.

4. A double-layer high-position roller device according to claim 3, characterized in that: The width of the wing gradually narrows in a direction gradually away from the active rod; The width of the large opening end of the first slot is smaller than the width of the small opening end of the second slot.

5. A double-layer high-position roller device according to claim 1, characterized in that: Two bottom support rods are fixedly connected between the bottom of the fixing plate and the right fixing plate, and rear end of the fixing plate and the right fixing plate are fixed with rear stop rods.

6. A double-layer high-position roller device according to claim 1, characterized in that: A transmission groove is provided at one end of the active end shaft; The power input shaft comprises a circular shaft and a first prism, and the first prism is matched with the transmission groove.

7. A double-layer high-position roller device according to claim 1, characterized in that: Four connecting rods are fixedly connected between the left end plate and the right end plate, and the four connecting rods are respectively located below the four active rods; A scraper is fixed on the top of the connecting rod.

8. A double-layer high-position roller device according to claim 1, characterized in that: Four U-shaped seats are fixed on two adjacent side surfaces of the left end plate and the right end plate, and two ends of the connecting rod are respectively placed on the corresponding U-shaped seats; The front and rear sides of the U-shaped seat are both plugged with obliquely arranged plug pins, and one end of the plug pin extends to the inside of the connecting rod.

9. A double-layer high-position roller device according to claim 1, characterized in that: The pushing mechanism comprises a telescopic cylinder, a push plate and four second prisms; The telescopic cylinder is mounted on the right fixed plate; The push plate is fixed to the free end of the piston rod of the telescopic cylinder; The four second prisms are all rotatably connected to the push plate via a third bearing.

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