A sizing device for producing impregnated canvas and its sizing process

Abstract

This application relates to the technical field of canvas gluing equipment, and discloses a gluing device for producing impregnated canvas and its gluing process, including a glue tank. An impregnation chamber is provided inside the glue tank. Two sides of the top of the impregnation chamber are respectively communicated with a feeding chamber and a discharging chamber. A number of equally spaced lower guide rollers and a number of equally spaced upper guide rollers are provided inside the impregnation chamber. A number of equally spaced annular grooves are formed on the upper guide rollers. Through the structural design of the horizontally moving lower guide roller device and the vertically moving upper guide roller device, when gluing the canvas, the total length of the canvas passing around the lower guide rollers and the upper guide rollers in the impregnation chamber is increased. And by first controlling the downward movement of the upper guide rollers, and then controlling the horizontal movement of the lower guide rollers to directly above the upper guide rollers, with the rotation of the lower guide rollers and the supporting functions of the upper guide rollers and the support blocks, one end of the canvas can be conveyed from below the feeding chamber to below the discharging chamber, facilitating one end of the canvas to pass through the impregnation chamber and improving the gluing efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of canvas gluing equipment, and in particular to a gluing device for producing impregnated canvas and its gluing process. Background Art

[0002] In the process of canvas production, the gluing process is an important link to improve the functionality of the canvas (such as waterproof, windproof, corrosion-resistant). For example, for yard covers and mine air ducts, high wear-resistant and corrosion-resistant coatings are required; for tents and sunshades in outdoor products, waterproof and anti-ultraviolet coatings are required; for vehicle tarpaulins and marine canvases in the transportation field, anti-aging and salt spray-resistant coatings are required. The existing canvas gluing process generally uses an impregnating machine. By immersing the canvas in a straight state completely into the glue solution, the glue solution evenly fills the fiber gaps through gravity penetration and capillary action. The canvas is driven by guide rollers in the glue and remains in a straight state.

[0003] For example, the utility model patent with the application number 2017204378827 relates to a fabric impregnating machine, which includes a frame and a feed roller, a dust removal mechanism, an impregnating mechanism, a drying box, and a discharge roller sequentially installed on the frame. It is provided with multiple guide rollers in the impregnating box to keep the fabric in a straight state in the impregnating box.

[0004] For example, the invention patent with the application number 2024119221419 discloses an impregnating device that lifts the liquid level by self-suction vacuum. It is provided with a pipe cover in the liquid storage tank. The canvas passes from the feeding area around the liquid storage tank and the guide rollers in the pipe cover to the discharging area, and the glue solution penetration rate is increased by gluing the canvas in the negative pressure environment in the pipe cover, thereby shortening the impregnating time.

[0005] However, due to the presence of the glue solution in the impregnating box, it is difficult for the existing equipment to wind one end of the canvas from the feeding area around the guide rollers located inside the glue solution before impregnating the canvas. Moreover, the more the number of guide rollers is set, the more difficult it is to operate. It is necessary to drain the glue first for winding the cloth. If the number of guide rollers is set smaller, the total length of the canvas located in the glue solution is shorter, both of which will result in low canvas gluing efficiency. Summary of the Invention

[0006] The present application provides a gluing device for producing impregnated canvas and its gluing process, which has the advantage of being convenient to wind the cloth from the feeding port around the guide rollers to the discharging port in the glue solution on the premise of setting multiple canvas guide rollers, so as to solve the problem of low impregnating efficiency existing when the existing impregnating equipment sets canvas guide rollers in the glue solution.

[0007] To achieve the above object, the present application adopts the following technical solution: A gluing device for producing impregnated canvas includes a glue water tank. An impregnating chamber is provided inside the glue water tank. The two sides of the top of the impregnating chamber are respectively communicated with a feeding chamber and a discharging chamber. A lower guide roller device, an upper guide roller device, and a support assembly are provided inside the impregnating chamber.

[0008] The lower guide roller device includes a number of lower fabric guide rollers arranged at equal intervals. The lower fabric guide rollers are driven to rotate by a motor disposed inside a sealed box, and a first cylinder for controlling the horizontal movement of the lower guide roller device is provided on one side of the glue tank.

[0009] The upper guide roller device includes a number of upper fabric guide rollers arranged at equal intervals. A number of annular grooves arranged at equal intervals are formed on the upper fabric guide rollers. A second cylinder for controlling the up-and-down movement of the upper guide roller device is provided on the top of the glue tank.

[0010] The support assembly includes a support beam arranged in parallel with the lower fabric guide rollers and the upper fabric guide rollers. Support blocks that are the same in number as and correspond one by one to the annular grooves on the upper fabric guide rollers are provided on the support beam.

[0011] Further, the middle part of the top end of the dipping chamber communicates with a vacuum chamber. A negative pressure suction pipe is connected to the top of the vacuum chamber. One end of the negative pressure suction pipe is connected to a vacuum pumping device. The vacuum pumping device is used to pump negative pressure inside the vacuum chamber, so that the canvas inside the dipping chamber is dipped in glue under a negative pressure environment, which is beneficial to the penetration of the glue liquid, shortens the gluing time of the canvas, and improves the working efficiency.

[0012] Further, the height value of the vacuum chamber is lower than the height values of the feeding chamber and the discharging chamber. A liquid level gauge in the prior art is provided inside the vacuum chamber to detect the liquid level height inside the vacuum chamber. When the negative pressure pumping stops, after the liquid level heights of the vacuum chamber, the feeding chamber, and the discharging chamber are flush, the glue liquid will not overflow through the feeding chamber and the discharging chamber.

[0013] Further, a positioning fabric guide roller having the same structure as the upper fabric guide roller is provided inside the dipping chamber. The positioning fabric guide roller is on the side close to the feeding chamber. The size of the lower fabric guide roller is smaller than that of the upper fabric guide roller. Annular grooves are formed on the upper fabric guide roller. On the premise of reserving enough space for the support blocks to support the canvas, the distance between two adjacent upper fabric guide rollers can be set shorter, so that the total length of the canvas wound around the lower fabric guide rollers and the upper fabric guide rollers inside the dipping chamber is longer, improving the gluing efficiency of the canvas. Both ends of the lower fabric guide roller are respectively fixedly connected with lower-position rotating shafts. One ends of the two lower-position rotating shafts far from the lower fabric guide roller are respectively connected to a cross frame through bearings. The sealed box is fixedly installed on one of the cross frames. The output rotating shaft of the motor is fixedly connected to one end of one of the lower-position rotating shafts. The motor is disposed inside the sealed box to prevent the glue from penetrating into the motor.

[0014] Further, gears sleeved on the lower-position rotating shafts are fixedly installed inside the cross frame. The gears on each lower-position rotating shaft are connected by a chain drive. With the setting of one motor, through the transmission of the gears and the chain, all the lower fabric guide rollers can be driven to rotate synchronously, facilitating the overall movement control of the lower guide roller device.

[0015] Furthermore, a supporting device for supporting the horizontal frame is also provided inside the dipping chamber. The supporting device includes two supporting shafts, which are respectively located on the upper and lower sides of the horizontal frame, and both are fixedly sleeved with one inner wall of the dipping chamber. At the ends of the two supporting shafts away from the inner wall of the dipping chamber, supporting wheels are respectively fixedly installed through bearings. The two supporting wheels are respectively arranged on the upper and lower sides of the horizontal frame. By supporting the horizontal frame on the upper and lower sides by the two supporting wheels, the horizontal frame can be stably moved horizontally under the control of the piston shaft of the first cylinder. And the setting that the supporting wheels are connected to the supporting shafts through bearings reduces the frictional resistance when the horizontal frame moves.

[0016] Furthermore, a supporting plate is fixedly installed between two adjacent supporting beams. A U-shaped supporting member is fixedly installed on the top of the supporting plate. Both vertical plates of the U-shaped supporting member are fixedly connected to the two supporting shafts. By supporting the supporting shafts at one end close to the supporting wheels through the U-shaped supporting member, the supporting structure of the supporting wheels for the horizontal frame is more stable.

[0017] Furthermore, upper rotating shafts are respectively fixedly connected to both ends of the upper guide cloth roller. The ends of the upper rotating shafts away from the upper guide cloth roller are connected to an L-shaped connecting plate through bearings. The top of the end of the L-shaped connecting plate away from the upper rotating shaft is fixedly connected to the cross beam. The piston shaft of the second cylinder is fixedly connected to the top of the cross beam. Through the connection design of the L-shaped connecting plate with an L-shaped structure, after controlling the upper guide cloth roller to move down to the same height as the positioning guide cloth roller, the L-shaped connecting plate will not affect the horizontal movement of the lower guide cloth roller to directly above the upper guide cloth roller.

[0018] Furthermore, a guide cloth plate is provided inside the dipping chamber and is located below the feeding chamber. A notch through which the piston shaft of the first cylinder and the horizontal frame pass is opened on the guide cloth plate. Through the setting of the guide cloth plate, one end of the canvas can slide down to the positioning guide cloth roller conveniently, so as to use the rotation of the lower guide cloth roller to convey one end of the canvas towards the side of the discharging chamber. A baffle is also provided inside the dipping chamber and is located below the discharging chamber. The bottom end of the baffle extends to a supporting block close to one side of the discharging chamber. After one end of the canvas is conveyed to the baffle, through the blocking of the baffle, it is convenient to take out one end of the lower canvas from the discharging chamber later and sleeve it onto the winding device.

[0019] The coating process steps of the canvas are as follows:

[0020] S1. First, put one end of the canvas to be coated from the feeding chamber. One end of the canvas falls between the positioning guide cloth roller and the lower guide cloth roller. Start the motor inside the sealing box to drive the output rotating shaft to drive the lower guide cloth roller to rotate. Utilize the rotation of the lower guide cloth roller in cooperation with the positioning guide cloth roller and the subsequent upper guide cloth roller to convey one end of the canvas towards the discharging chamber. And the canvas is supported by the supporting blocks between the positioning guide cloth roller and the upper guide cloth roller and between two adjacent subsequent upper guide cloth rollers.

[0021] S2. After one end of the canvas is conveyed below the discharge chamber, use a clamping tool or control a clamping device above the discharge chamber to take out one end of the canvas and sleeve it onto the winding device.

[0022] S3. Then control the first cylinder to drive the piston rod to push the lower guide roller to move towards one side of the discharge chamber, so that the lower guide roller moves above the support block and is misaligned with the upper guide roller one by one. Then control the second cylinder to drive the piston rod to pull the upper guide roller upward, so that the canvas wound around the upper guide roller and the lower guide roller remains in a straightened state.

[0023] S4. Control the dipping time according to the material of the canvas. After one roll of canvas is coated, drive the piston rod of the second cylinder to push the upper guide roller downward to the same horizontal height as the positioning guide roller, and then drive the piston rod of the first cylinder to pull the lower guide roller to move towards the feeding chamber side, so that the lower guide roller moves directly above the positioning guide roller and the upper guide roller. Then put one end of a new roll of canvas into the feeding chamber, and repeat the steps of S1 - S4 above.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. A dipping canvas production coating device and its coating process provided by the present application, through the structural design of the horizontally moving lower guide roller device and the vertically moving upper guide roller device, when the canvas is coated, it increases the total length of the canvas wound around the lower guide roller and the upper guide roller in the dipping chamber, thereby improving the coating efficiency of the canvas.

[0026] 2. By first controlling the upper guide roller to move downward, and then controlling the lower guide roller to horizontally move directly above the upper guide roller, and using the rotation of the lower guide roller and the supporting functions of the upper guide roller and the support block, one end of the canvas can be conveyed from below the feeding chamber to below the discharge chamber, facilitating one end of the canvas to pass through the dipping chamber, further improving the coating efficiency. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings:

[0028] Figure 1 It is a schematic cross-sectional structure diagram of the middle part of the glue tank of the present invention;

[0029] Figure 2 It is Figure 1 the front view of;

[0030] Figure 3 It is Figure 1Rear view of the internal structure of the glue tank

[0031] Figure 4 For Figure 1 Schematic structural diagram of the lower guide roller device

[0032] Figure 5 For Figure 3 Schematic structural diagram of the internal structure of the middle crossbar

[0033] Figure 6 For Figure 4 Schematic structural diagram of the support device in

[0034] Figure 7 For Figure 6 Right view of

[0035] Figure 8 For Figure 1 Schematic structural diagram of the upper guide roller device

[0036] Figure 9 For Figure 3 Schematic plan view of the upper guide roller device in

[0037] Figure 10 For Figure 1 Schematic structural diagram of the positioning cloth guide roller and the support assembly in

[0038] Figure 11 For Figure 2 Schematic position structure diagram of two guide roller devices in the state of preparing to convey the cloth in

[0039] Figure 12 For Figure 11 Schematic diagram of the partial enlarged structure at A in

[0040] In the figure: 1. Glue tank; 101. Glue dipping chamber; 102. Feed chamber; 103. Discharge chamber; 104. Vacuum chamber; 105. Negative pressure suction pipe; 2. Lower guide roller device; 201. Lower cloth guide roller; 202. Lower rotating shaft; 203. Cross frame; 204. Sealing box; 3. Upper guide roller device; 301. Upper cloth guide roller; 302. Annular groove; 303. Upper rotating shaft; 304. L-shaped connecting plate; 305. Cross beam; 4. First cylinder; 5. Second cylinder; 6. Support assembly; 601. Support beam; 602. Support block; 7. Positioning cloth guide roller; 8. Cloth guide plate; 9. Baffle; 10. Support plate; 11. U-shaped support member; 12. Support device; 121. Support shaft; 122. Support wheel. Detailed implementation method

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] An embodiment is as follows Figure 1 - Figure 2 , a sizing device for producing impregnated canvas, including a glue tank 1. The glue tank 1 includes four chambers, namely an impregnation chamber 101, a feeding chamber 102, a discharging chamber 103, and a vacuum chamber 104, which are connected. The feeding chamber 102 and the discharging chamber 103 are respectively located on both sides of the top of the impregnation chamber 101. The vacuum chamber 104 is located in the middle of the top of the impregnation chamber 101. And the height values of the impregnation chamber 101 and the feeding chamber 102 are greater than the height value of the discharging chamber 103. A negative pressure suction pipe 105 is connected to the top of the discharging chamber 103. One end of the negative pressure suction pipe 105 is connected to a vacuum pumping device (i.e., a vacuum pump, not shown in the figure), and the inner cavity of the vacuum chamber 104 is evacuated through the negative pressure suction pipe 105.

[0043] The inside of the impregnation chamber 101 is provided with a lower guide roller device 2 and an upper guide roller device 3. Please refer to Figure 1 - 4 , the lower guide roller device 2 includes a plurality of lower guide cloth rollers 201 arranged at equal intervals. The number of the lower guide cloth rollers 201 is not less than two. Both ends of the lower guide cloth roller 201 are respectively fixedly connected with a lower rotating shaft 202. One end of the two lower rotating shafts 202 far away from the lower guide cloth roller 201 is respectively connected to a cross frame 203 through bearings. A sealing box 204 is fixedly installed on one of the cross frames 203. A motor is arranged inside the sealing box 204 to prevent glue from penetrating into the inside of the motor. The output rotating shaft of the motor is fixedly connected to one end of one of the lower rotating shafts 202. Please refer to Figure 5 , a gear is fixedly sleeved on the lower rotating shaft 202 and located inside the cross frame 203. The gears on each of the lower rotating shafts 202 are connected by chain drive. When one of the lower rotating shafts 202 is driven to rotate by the motor inside the sealing box 204, all the lower rotating shafts 202 can drive the lower guide cloth rollers 201 to rotate synchronously and in the same direction respectively.

[0044] The inside of the impregnation chamber 101 is further provided with a support device 12 for supporting the cross frame 203. A first cylinder 4 is fixedly installed on the outside of the glue tank 1. The piston shaft of the first cylinder 4 extends into the inside of the impregnation chamber 101 and is fixedly connected to one end of the cross frame 203. The cross frame 203 is supported by the support device 12. By driving the piston shaft to move by the first cylinder 4, the cross frame 203 can be controlled to drive the lower rotating shaft 202 and the lower guide cloth roller 201 as a whole to move, thereby controlling the horizontal movement of a plurality of lower guide cloth rollers 201 in the impregnation chamber 101.

[0045] Please refer to Figure 4, Figure 6 - Figure 7 The supporting device 12 includes two supporting shafts 121. The two supporting shafts 121 are respectively located on the upper and lower sides of the horizontal frame 203, and both of the two supporting shafts 121 are fixedly sleeved with one side inner wall of the dipping chamber 101. One ends of the two supporting shafts 121 away from the inner wall of the dipping chamber 101 are respectively fixedly installed with supporting wheels 122 through bearings. The two supporting wheels 122 are respectively arranged on the upper and lower sides of the horizontal frame 203. The horizontal frame 203 is supported and limited by the two supporting wheels 122, so that the horizontal frame 203 can horizontally move between the two annular grooves 302.

[0046] Please refer to Figure 1 - Figure 3 , Figure 8 -FIG.-9, the upper guide roller device 3 includes a plurality of upper guide cloth rollers 301 arranged at equal intervals. The number of the upper guide cloth rollers 301 is not less than two. A plurality of annular grooves 302 arranged at equal intervals are formed on the outer side of the upper guide cloth rollers 301. Two ends of the upper guide cloth rollers 301 are respectively fixedly connected with upper position rotating shafts 303. One ends of the upper position rotating shafts 303 away from the upper guide cloth rollers 301 are connected with L-shaped connecting plates 304 through bearings. The top of one end of the L-shaped connecting plate 304 away from the upper position rotating shaft 303 is fixedly connected with a cross beam 305. A second air cylinder 5 is fixedly installed on the top of the glue water tank 1. The piston shaft of the second air cylinder 5 extends into the interior of the dipping chamber 101 and is fixedly connected with the top of the cross beam 305. By driving the piston shaft of the second air cylinder 5 to drive the cross beam 305 to move up and down, the overall up and down movement of the L-shaped connecting plate 304, the upper position rotating shaft 303 and the upper guide cloth roller 301 can be controlled.

[0047] A positioning guide cloth roller 7 is arranged at the bottom of the inner cavity of the dipping chamber 101 near the feeding chamber 102. The positioning guide cloth roller 7 has the same structure as the upper guide cloth roller 301. The difference is that the positioning guide cloth roller 7 is fixedly arranged inside the dipping chamber 101, while the support beam 601 can move up and down under the control of the piston shaft of the second air cylinder 5, and the positioning guide cloth roller 7 is provided with the same annular grooves 302 as those on the support assembly 6.

[0048] Please continue to refer to Figure 1 - Figure 3 , Figure 10 , a plurality of support assemblies 6 arranged at equal intervals are further arranged inside the dipping chamber 101. The number of the support assemblies 6 is not less than two. The support assembly 6 includes a support beam 601 arranged in parallel with the lower guide cloth roller 201 and the upper guide cloth roller 301. Two ends of the support beam 601 are respectively fixedly connected with the two side inner walls of the dipping chamber 101, and a plurality of support blocks 602 arranged at equal intervals are fixedly installed on the support beam 601. The support blocks 602 correspond to the annular grooves 302 one by one.

[0049] The second air cylinder 5 drives the piston shaft to drive the cross beam 305, the L-shaped connecting plate 304, the upper position rotating shaft 303 and the upper guide cloth roller 301 to move downward, so that the upper guide cloth roller 301 moves to a state where it is horizontal with the positioning guide cloth roller 7, that is, asFigure 11 - Figure 12 In the state shown, both ends of the support beam 601 exactly extend into the annular groove 302. And through the L-shaped structure design of the L-shaped connecting plate 304, subsequently, the piston shaft driven by the first cylinder 4 can drive the horizontal frame 203, the lower rotating shaft 202 and the lower fabric guiding roller 201 to move horizontally. After the lower fabric guiding roller 201 moves to directly above the upper fabric guiding roller 301, the L-shaped connecting plate 304 will not block the lower fabric guiding roller 201. At this time, the output rotating shaft driven by the motor inside the sealing box 204 can drive the lower rotating shaft 202 and the lower fabric guiding roller 201 to rotate. Cooperating with the rotation of the upper fabric guiding roller 301 and the support of the support block 602 between two adjacent upper fabric guiding rollers 301, when the dipping chamber 101 is filled with glue, one end of the canvas is conveyed from below the feeding chamber 102 to below the discharging chamber 103. Then, respectively control the lower fabric guiding roller 201 and the upper fabric guiding roller 301 to reset and move to the state as shown in Figure 2 Figure, which facilitates that at the initial stage of canvas gluing, one end of the canvas can smoothly pass through the dipping chamber 101 and wind around the lower fabric guiding roller 201 and the upper fabric guiding roller 301, thereby increasing the total length of the canvas to be glued in the dipping chamber 101 and improving the gluing efficiency.

[0050] Inside the dipping chamber 101, there is a fabric guiding plate 8 located below the feeding chamber 102, and the fabric guiding plate 8 is provided with a notch through which the piston shaft of the first cylinder 4 and the horizontal frame 203 pass ( Figure 1 the notch on the middle fabric guiding plate 8 is blocked by the canvas), so that the setting of the fabric guiding plate 8 does not affect the horizontal movement of the piston shaft of the first cylinder 4 and the horizontal frame 203. The bottom end of the fabric guiding plate 8 abuts against the outside of the positioning fabric guiding roller 7. One end of the canvas is placed into the dipping chamber 101 through the feeding chamber 102. One end of the canvas slides between the positioning fabric guiding roller 7 and the lower fabric guiding roller 201 under the guiding of the fabric guiding plate 8. Through the rotation of the lower fabric guiding roller 201 and the supporting and guiding of the positioning fabric guiding roller 7, one end of the fabric is conveyed towards the discharging chamber 103 side.

[0051] Inside the dipping chamber 101, there is also a baffle 9 located below the discharging chamber 103. The bottom end of the baffle 9 extends to the support block 602 on the side close to the discharging chamber 103. After one end of the canvas is conveyed to the baffle 9, through the blocking of the baffle 9, it is convenient to subsequently take out one end of the canvas below from the discharging chamber 103 and sleeve it onto the winding device (i.e., the existing canvas winding roller, not shown in the figure).

[0052] Please refer to Figure 3 、 Figure 6 - Figure 7 and Figure 10, a pallet 10 is fixedly installed between two adjacent support beams 601. A U-shaped support member 11 is fixedly installed on the top of the pallet 10. Both vertical plates of the U-shaped support member 11 are fixedly connected to two support shafts 121. Through the arrangement of the pallet 10 and the U-shaped support member 11, the support effect of the support shaft 121 is further improved, thereby ensuring the support function of the cross frame 203 between the two support wheels 122 and ensuring that the cross frame 203 can stably maintain a horizontal state.

[0053] A sizing device for producing sized canvas, and its sizing process steps are as follows:

[0054] S1. First, one end of the canvas to be sized is placed from the feeding chamber 102. Through the support and guidance of the guiding cloth plate 8, one end of the canvas falls between the positioning guiding cloth roller 7 and the lower guiding cloth roller 201. Start the motor inside the sealing box 204 to drive the output rotating shaft to drive the lower rotating shaft 202 to rotate, and then drive the lower guiding cloth roller 201 to rotate. By using the rotation of the lower guiding cloth roller 201 in cooperation with the positioning guiding cloth roller 7 and the subsequent upper guiding cloth roller 301, one end of the canvas is conveyed towards the discharging chamber 103. The canvas is supported by the support blocks 602 between the positioning guiding cloth roller 7 and the upper guiding cloth roller 301 and between two adjacent upper guiding cloth rollers 301.

[0055] S2. When one end of the canvas is conveyed to the baffle 9 below the discharging chamber 103, use a clamping tool or control a clamping device above the discharging chamber 103 to take out one end of the canvas and sleeve it onto the winding device.

[0056] S3. Then control the first cylinder 4 to drive the piston shaft to push the cross frame 203 to drive the lower rotating shaft 202 and the lower guiding cloth roller 201 to move towards one side of the discharging chamber 103, so that the lower guiding cloth roller 201 moves above the support block 602 and is misaligned with the upper guiding cloth roller 301 one by one. Then control the second cylinder 5 to drive the piston shaft to pull the cross beam 305, the L-shaped connecting plate 304, the upper rotating shaft 303 and the upper guiding cloth roller 301 to move upward, so that the canvas wound around the upper guiding cloth roller 301 and the lower guiding cloth roller 201 maintains the straightened state as Figure 1 shown.

[0057] S4. Use a vacuum pumping device to evacuate the interior of the vacuum chamber 104 through the negative pressure suction pipe 105, control the impregnation treatment of the canvas in the impregnation chamber 101 under a negative pressure environment, and control the impregnation time according to the material of the canvas. After a roll of canvas is coated, drive the piston shaft through the second cylinder 5 to push the cross beam 305, L-shaped connecting plate 304, upper rotating shaft 303 and upper fabric guiding roller 301 to move down to the same horizontal height as the positioning fabric guiding roller 7, and then drive the piston shaft through the first cylinder 4 to pull the cross frame 203, lower rotating shaft 202 and lower fabric guiding roller 201 to move towards the side of the feeding chamber 102, so that the lower fabric guiding roller 201 moves directly above the positioning fabric guiding roller 7 and the upper fabric guiding roller 301. Then, put one end of a new roll of canvas into the feeding chamber 102, and repeat the steps of S1-S4 above.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sizing device for the production of impregnated canvas, comprising a glue tank, an impregnation chamber is arranged inside the glue tank, and a feeding chamber and a discharging chamber are respectively communicated with both sides of the top of the impregnation chamber. It is characterized in that, Inside the dipping chamber, a lower guide roller device, an upper guide roller device and a support assembly are provided; The lower guide roller device includes a number of equally spaced lower fabric guide rollers, which are driven to rotate by a motor arranged inside the sealed box, and a first cylinder for controlling the horizontal movement of the lower guide roller device is arranged on one side of the glue water tank; The upper guide roller device includes a number of equally spaced upper fabric guide rollers, and a number of equally spaced annular grooves are formed on the upper fabric guide rollers. A second cylinder for controlling the up and down movement of the upper guide roller device is arranged on the top of the glue water tank; The support assembly includes a support beam arranged parallel to the lower fabric guide rollers and the upper fabric guide rollers, and support blocks are arranged on the support beam, the number of which is the same as and corresponds one by one to the annular grooves on the upper fabric guide rollers.

2. The sizing device for producing sized canvas according to claim 1, wherein, In the middle of the top end of the dipping chamber, a vacuum chamber is communicated, and a negative pressure suction pipe is connected to the top of the vacuum chamber.

3. The sizing device for the production of impregnated canvas according to claim 2, characterized in that, The height value of the vacuum chamber is lower than the height values of the feeding chamber and the discharging chamber.

4. The sizing device for the production of impregnated canvas according to claim 1, characterized in that, Inside the dipping chamber, a positioning fabric guide roller with the same structure as the upper fabric guide roller is provided. The positioning fabric guide roller is on the side close to the feeding chamber. The size of the lower fabric guide roller is smaller than that of the upper fabric guide roller. The two ends of the lower fabric guide roller are respectively fixedly connected with lower position rotating shafts. The ends of the two lower position rotating shafts far away from the lower fabric guide roller are respectively connected with a cross frame through bearings. The sealed box is fixedly installed on one of the cross frames, and the output rotating shaft of the motor is fixedly connected with one end of one of the lower position rotating shafts.

5. The sizing device for producing sized canvas according to claim 4, wherein, A gear is fixedly sleeved on the lower position rotating shaft and located inside the cross frame, and the gears on each lower position rotating shaft are connected by a chain drive.

6. The sizing device for producing sized canvas according to claim 4, wherein, Inside the dipping chamber, a support device for supporting the cross frame is further provided. The support device includes two support shafts, which are respectively located on the upper and lower sides of the cross frame, and both support shafts are fixedly sleeved with one side inner wall of the dipping chamber. The ends of the two support shafts far away from the inner wall of the dipping chamber are respectively fixedly installed with support wheels through bearings, and the two support wheels are respectively arranged on the upper and lower sides of the cross frame.

7. The sizing device for the production of impregnated canvas according to claim 6, characterized in that, A support plate is fixedly installed between two adjacent support beams, and a U-shaped support member is fixedly installed on the top of the support plate. The vertical plates on both sides of the U-shaped support member are respectively fixedly connected with the two support shafts.

8. The sizing device for producing sized canvas according to claim 4, wherein, The two ends of the upper fabric guide roller are respectively fixedly connected with upper position rotating shafts. The ends of the upper position rotating shafts far away from the upper fabric guide roller are connected with an L-shaped connecting plate through bearings. The top of the end of the L-shaped connecting plate far away from the upper position rotating shaft is fixedly connected with a cross beam, and the piston shaft of the second cylinder is fixedly connected with the top of the cross beam.

9. The sizing device for the production of impregnated canvas according to claim 4, characterized in that, Inside the dipping chamber, a fabric guide plate is provided below the feeding chamber, and a notch through which the piston shaft of the first cylinder and the cross frame pass is formed on the fabric guide plate. Inside the dipping chamber, a baffle is further provided below the discharging chamber, and the bottom end of the baffle extends to the support block on the side close to the discharging chamber.

10. The sizing device for producing sized canvas according to claim 4, wherein, The glue coating process steps of the canvas are as follows: S1. First, put one end of the canvas to be coated with glue into the feeding chamber. One end of the canvas falls between the positioning fabric guide roller and the lower fabric guide roller. Start the motor inside the sealed box to drive the output rotating shaft to drive the lower fabric guide roller to rotate. Utilize the rotation of the lower fabric guide roller to cooperate with the positioning fabric guide roller and the subsequent upper fabric guide rollers to convey one end of the canvas towards the discharging chamber. And the canvas is supported by the support blocks between the positioning fabric guide roller and the upper fabric guide roller and between two adjacent subsequent upper fabric guide rollers; S2. After one end of the canvas is conveyed under the discharging chamber, use a clamping tool or control a clamping device above the discharging chamber to take out one end of the canvas and sleeve it onto the winding device; S3. Then control the first cylinder to drive the piston shaft to push the lower guiding roller to move towards one side of the discharging chamber, so that the lower guiding roller moves above the supporting block and is misaligned with the upper guiding roller one by one. Then control the second cylinder to drive the piston shaft to pull the upper guiding roller to move upward, so that the canvas passing around the upper guiding roller and the lower guiding roller remains in a straightened state; S4. Control the dipping time according to the material of the canvas. After one roll of canvas is coated with glue, drive the piston shaft of the second cylinder to push the upper guiding roller to move downward to the same horizontal height as the positioning guiding roller. Then drive the piston shaft of the first cylinder to pull the lower guiding roller to move towards one side of the feeding chamber, so that the lower guiding roller moves directly above the positioning guiding roller and the upper guiding roller. Then put one end of a new roll of canvas into the feeding chamber, and repeat the above steps S1 - S4.

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