Production process and production equipment of heavy-denier high-low-velvet wear-resistant gold washing blanket

Abstract

The invention provides a production process and production equipment of a heavy-denier high-low velvet wear-resistant gold washing blanket, and the production process comprises the following steps: (1) opening, mixing, carding and lapping heavy-denier polyester staple fibers with different thicknesses to form a uniform fiber web, and needling the fiber web through a pre-needling machine; (2) processing high-low stripe patterns through a jacquard machine; (3) carrying out primary gluing and fluff fixing through a gluing machine; and (4) carrying out secondary gluing through a gluing machine to form a waterproof layer, and rolling the blank blanket after glue solidification. Various materials with different thicknesses are adopted, the thickness is matched to improve the structural strength of the product, the jacquard patterns are in a four-stripe style and a one-high-one-low special style, gold can be effectively blocked at the low position, and the success rate of gold washing is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gold panning blankets, and in particular to a production process and production equipment of a coarse-denier high-low pile wear-resistant gold panning blanket. Background Art

[0002] At present, the manufacturing process of needle-punched carpet for river sand gold panning is to use polyester chemical fiber staple as raw material, and form a uniform fiber net through the processes of opening, mixing, combing and laying net, and then use needle punching to consolidate and raise the front side to form the grey cloth, and then glue the back side, dry and shape it into the finished carpet. However, there are generally defects such as small weight, poor washing resistance and low gold yield.

[0003] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which resulted in this case. Summary of the invention

[0004] The first object of the present invention is to provide a production process for a coarse-denier high-low pile wear-resistant gold panning blanket that is resistant to washing, has a long service life and a high gold yield, in view of the above shortcomings.

[0005] The first solution adopted by the present invention to solve the technical problem is: a production process of a coarse denier high-low pile wear-resistant gold panning blanket, comprising the following steps:

[0006] (1) opening, mixing, combing and laying coarse denier polyester staple fibers of different thicknesses to form a uniform fiber web, and then needle-punching the fiber web through a pre-needling machine;

[0007] (2) Processing high and low stripe patterns through jacquard machines;

[0008] (3) Use a glue coating machine to coat the velvet once;

[0009] (4) A secondary gluing machine is used to form a waterproof layer, and the blank blanket is rolled up after the glue is solidified.

[0010] Furthermore, in order to achieve a velvet-fixing effect and ensure the quality of the gold panning blanket, in step (3), the mass percentage of glue in the first gluing process is 1.67% of the mass of the gold panning blanket.

[0011] Furthermore, in order to achieve the effect of being waterproof and resistant to washing, so as to effectively prevent the gold sand from being washed away, improve the gold retention rate, and at the same time, increase the gram weight of the gold panning blanket; in step (4), the mass percentage of glue in the secondary glue coating on the gold panning blanket is 53.34%.

[0012] The second object of the present invention is to provide a coarse denier high and low pile wear-resistant gold panning blanket production equipment that can produce a gold panning blanket that is resistant to washing, has a long service life and a high gold yield.

[0013] The second solution adopted by the present invention to solve the technical problem is: a coarse denier high and low pile wear-resistant gold panning blanket production equipment, including a cotton opener, a multi-channel cotton box, a carding machine, a web laying machine, a needle punching machine, a jacquard machine and a glue coating machine connected in sequence, the cotton opener includes a feeding mechanism, a cotton opening mechanism and a discharging mechanism, the cotton opening mechanism includes a frame, a conveyor belt assembly, a plurality of cotton opening rollers and a driver, the conveyor belt assembly is arranged on the frame, the cotton opening roller is rotatably installed on the frame and is located above the conveyor belt assembly, the cotton opening roller is provided with a spike rake for grabbing fibers, and the driver is transmission-connected to the cotton opening roller to drive the cotton opening roller to rotate.

[0014] Furthermore, in order to improve the cotton opening effect, a layered cotton grabbing structure is formed; the cotton opening roller includes a first cotton opening roller, a second cotton opening roller and a third cotton opening roller which are arranged in sequence along the feeding order, and the spike rake includes a spike rake sleeve and spike rake teeth, the spike rake sleeve is arranged on the cotton opening roller, and the spike rake teeth are radially arranged on the spike rake sleeve, and the tooth spacing of the spike rake teeth on the first cotton opening roller, the second cotton opening roller and the third cotton opening roller gradually increases.

[0015] Furthermore, in order to realize a structure in which the position of the spike rake teeth can be changed, so as to evenly grab the fibers by continuously changing the position of the spike rake teeth; a key block is provided on the cotton opening roller, and a long key groove is axially provided on the inner wall of the spike rake sleeve, and the key block is slidably installed in the long key groove so that the spike rake sleeve can be slidably installed on the cotton opening roller, thereby changing the position of the spike rake teeth grabbing the cotton by sliding the spike rake sleeve to ensure the uniformity of the cotton opening.

[0016] Furthermore, in order to drive the spike rake sleeve to slide axially to change the position of the spike rake teeth; the cotton opening mechanism also includes a magnetic drive mechanism that drives the spike rake sleeve to move axially along the cotton opening roller, and the magnetic drive mechanism includes a magnetic block and a power-carrying coil. The magnetic block is arranged at the end of the spike rake sleeve, and the power-carrying coil is arranged on the frame and located next to the cotton opening roller. The side of the magnetic block adjacent to the power-carrying coil has the same magnetic property as the power-carrying coil, so as to control the axial sliding distance of the spike rake sleeve by adjusting the current of the power-carrying coil.

[0017] Furthermore, in order to ensure that the fiber clusters are evenly dispersed, the cotton opening mechanism also includes a plurality of sensors for detecting the distribution of fiber clusters at the front end of each cotton opening roller and a controller for driving the movement of the nail curtain according to the distribution of fiber clusters detected by the detector. The frame is provided with a mounting rod located above the gap between two adjacent cotton opening rollers, and the sensor is mounted on the mounting rod. The sensor is connected to the controller so as to send the distribution of fiber clusters to the controller. The controller is connected to the energized coil so as to adjust the current of the energized coil through the controller to control the movement of the nail rake teeth.

[0018] Furthermore, in order to apply glue on the blank blanket, the glue coating machine includes a front rubber roller, a rear rubber roller for conveying the blank blanket, and a glue outlet pipe for supplying EVA glue, the rear rubber roller is arranged on the rear side of the front rubber roller and the front rubber roller and the rear rubber roller are rollingly matched, the glue outlet pipe is arranged above the side of the front rubber roller close to the rear rubber roller, and a plurality of glue outlet holes are arranged on the glue outlet pipe, and each glue outlet hole is provided with a control valve for controlling the glue outlet amount of the glue outlet hole.

[0019] Furthermore, in order to avoid uneven glue discharge, resulting in less glue in some places on the rear rubber roller, resulting in uneven glue layer on the carpet, the uniform coating of EVA glue is effectively guaranteed; the glue coating machine also includes a controller for controlling the control valve switch to thereby adjust the glue discharge from the rubber pipe and a photoelectric sensor for detecting the glue distribution on the front rubber roller, the photoelectric sensor is connected to the controller so as to send the glue distribution on the front rubber roller to the controller, and the controller is connected to the control valve so as to control the control valve switch according to the glue distribution and thereby adjust the glue distribution on the front rubber roller.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) The present invention adopts a variety of materials of different coarseness and fineness, and the coarseness and fineness are matched to improve the structural strength of the product. The jacquard pattern adopts a special style of four stripes, one high and one low, which can effectively block the gold at a low position and improve the success rate of gold panning. Through two times of gluing, the problems of poor gluing uniformity, large amount of gluing, and poor stability of continuous production process of coarse denier blank blanket are solved. The glue adopts waterproof glue, which can effectively save water resources in the gold panning process and solve the problem of a large amount of gold being washed away by flushing. In addition, the finished gold panning blanket weighs 3000 grams, with 1350 grams of nap on the blanket surface, 50 grams of coating glue, and 1600 grams of waterproof coating glue, which is heavy and resistant to washing;

[0022] (2) The cotton opening machine of the present invention realizes cotton opening by arranging spikes and rakes on the cotton opening rollers to grab the fiber balls and convey them backwards. When in use, the cotton opening rollers rotate at high speed, and the spikes and rakes on the cotton opening rollers hook the fibers and convey them backwards. The multiple cotton opening rollers rotate and cooperate with each other to convey the fibers backwards. In addition, the tooth spacing of the spikes and rakes on each cotton opening roller changes from dense to sparse. The tooth spacing of the spikes and rakes on the front cotton opening rollers is denser, the fiber grabbing speed is faster, and the initial cotton opening efficiency is higher. The tooth spacing of the spikes and rakes on the middle cotton opening rollers is centered, forming a staggered structure of the spikes and rakes on the middle cotton opening rollers and the spikes and rakes on the front cotton opening rollers. At the same time, the cotton can be opened in a targeted manner according to the cotton opening situation of the front cotton opening rollers. The tooth spacing of the spikes and rakes on the rear cotton opening rollers is sparse, and the cotton can be opened in a targeted manner according to the cotton opening situation of the middle cotton opening rollers, forming a sense of cotton grabbing layering, and ensuring the uniformity of cotton opening.

[0023] (3) The present invention installs a spike rake on the cotton opening roller by sliding, and sets a magnetic drive mechanism to drive the spike rake teeth of the cotton opening roller to slide continuously, thereby changing its cotton grabbing position, thereby effectively ensuring the uniformity of cotton opening, preventing some places from grabbing more cotton and others from grabbing less cotton, and some places from piling up more cotton and others from piling up less cotton, so that a fiber web is initially formed in the cotton opening process, preventing excessive accumulation of fiber clusters that reduces the cotton opening effect, thereby effectively improving the cotton opening effect;

[0024] (4) The present invention improves the glue coating machine to effectively solve the problems of poor glue coating uniformity and large glue coating amount on the coarse denier blank blanket. During glue coating, glue is discharged through a glue outlet pipe, and a photoelectric sensor is used to monitor the glue amount on the front glue roller in real time to ensure uniform glue discharge and uniform glue coating, thereby effectively improving the glue coating quality of the product and ensuring the uniformity and service life of the finished product glue layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings in conjunction with embodiments:

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 Schematic diagram of the cotton opener Figure 1 ;

[0028] Figure 3 Schematic diagram of the cotton opener Figure 2 (remove the top cover);

[0029] Figure 4 It is a structural schematic diagram of a glue coating machine;

[0030] Figure 5 This is a structural cross-sectional view of the glue coating machine.

[0031] In the figure: cotton opener 1; feeding mechanism 11; cotton opener roller 12; spike rake 13; sensor 14; multi-channel cotton box 2; carding machine 3; web laying machine 4; needle loom 5; jacquard machine 6; glue coating machine 7; front rubber roller 71; rear rubber roller 72; glue outlet pipe 73; photoelectric sensor 74; blank blanket 8. DETAILED DESCRIPTION

[0032] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0033] Embodiment 1: This embodiment provides a coarse denier high-low pile wear-resistant gold panning blanket production process, comprising the following steps:

[0034] (1) opening, mixing, combing and laying coarse denier polyester staple fibers of different thicknesses to form a uniform fiber web, and then needle-punching the fiber web through a pre-needling machine;

[0035] (2) Processing high and low stripe patterns through jacquard machines;

[0036] (3) Use a glue coating machine to coat the velvet once;

[0037] (4) A secondary gluing machine is used to form a waterproof layer, and the blank blanket is rolled up after the glue is solidified.

[0038] In this embodiment, in order to achieve the effect of fixing the velvet and ensure the quality of the gold panning blanket, in step (3), the mass percentage of the glue in the first coating of glue on the gold panning blanket is 1.67%.

[0039] In this embodiment, in order to achieve the effect of waterproof and wash-resistant, to effectively prevent the gold sand from being washed away, to improve the gold retention rate, and at the same time, to increase the gram weight of the gold panning blanket; in step (4), the mass percentage of glue in the secondary glue coating on the gold panning blanket is 53.34%.

[0040] Embodiment 2: Figure 1-5 As shown, this embodiment provides a coarse denier high and low pile wear-resistant gold panning blanket production equipment, including a cotton opener 1, a multi-channel cotton box 2, a carding machine 3, a web laying machine 4, a needle machine 5, a jacquard machine 6 and a glue coating machine 7 connected in sequence, the cotton opener 1 includes a feeding mechanism 11, a cotton opener 1 structure and a discharging mechanism, the cotton opener 1 structure includes a frame, a conveyor belt assembly, a plurality of cotton opening rollers 12 and a driver, the conveyor belt assembly is arranged on the frame, the cotton opening roller 12 is rotatably installed on the frame and is located above the conveyor belt assembly, the cotton opening roller 12 is provided with a spike rake 13 for grabbing fibers, and the driver is transmission-connected to the cotton opening roller 12 to drive the cotton opening roller 12 to rotate.

[0041] In this embodiment, in order to improve the cotton opening effect, a layered cotton grabbing structure is formed; the cotton opening roller 12 includes a first cotton opening roller, a second cotton opening roller and a third cotton opening roller which are arranged in sequence along the feeding order, and the spike rake 13 includes a spike rake sleeve and spike rake teeth, the spike rake sleeve is arranged on the cotton opening roller 12, and the spike rake teeth are radially arranged on the spike rake sleeve, and the tooth spacing of the spike rake teeth on the first cotton opening roller 12, the second cotton opening roller 12 and the third cotton opening roller 12 gradually increases.

[0042] In this embodiment, in order to realize a structure in which the position of the spike rake teeth can be changed, so as to evenly grab the fibers by continuously changing the position of the spike rake teeth; a key block is provided on the cotton opening roller 12, and a long key groove is axially provided on the inner wall of the spike rake sleeve, and the key block is slidably installed in the long key groove to slide the spike rake sleeve on the cotton opening roller 12, thereby changing the position of the spike rake teeth grabbing the cotton by sliding the spike rake sleeve to ensure the uniformity of the cotton opening.

[0043] In this embodiment, in order to drive the spike rake sleeve to slide axially to change the position of the spike rake teeth, the cotton opening machine 1 also includes a magnetic drive mechanism for driving the spike rake sleeve to move axially along the cotton opening roller 12, and the magnetic drive mechanism includes a magnetic block and a power-carrying coil. The magnetic block is arranged at the end of the spike rake sleeve, and the power-carrying coil is arranged on the frame and located next to the cotton opening roller 12. The side of the magnetic block adjacent to the power-carrying coil has the same magnetic property as the power-carrying coil, so as to control the axial sliding distance of the spike rake sleeve by adjusting the current of the power-carrying coil.

[0044] In this embodiment, in order to ensure that the fiber balls are evenly dispersed, the cotton opening machine 1 also includes a plurality of sensors 14 for detecting the distribution of fiber balls at the front end of each cotton opening roller 12 and a controller for driving the movement of the nail curtain according to the distribution of fiber balls detected by the detector. The frame is provided with a mounting rod located above the gap between two adjacent cotton opening rollers 12, and the sensor 14 is mounted on the mounting rod. The sensor 14 is connected to the controller so as to send the distribution of fiber balls to the controller. The controller is connected to the energized coil so as to adjust the current of the energized coil through the controller to control the movement of the nail rake teeth.

[0045] In this embodiment, in order to apply glue on the blank blanket 8, the glue coating machine 7 includes a front glue roller 71, a rear glue roller 72 for conveying the blank blanket 8, and a glue outlet pipe 73 for supplying EVA glue. The rear glue roller 72 is arranged at the rear side of the front glue roller 71 and the front glue roller 71 and the rear glue roller 72 are rollingly matched. The glue outlet pipe 73 is arranged above the side of the front glue roller 71 close to the rear glue roller 72. The glue outlet pipe 73 is provided with a plurality of glue outlet holes, and each glue outlet hole is provided with a control valve for controlling the glue outlet amount of the glue outlet hole.

[0046] In this embodiment, in order to avoid uneven glue discharge, resulting in less glue in some places on the rear rubber roller 72, resulting in uneven glue layer on the carpet, the uniform coating of EVA glue is effectively guaranteed; the glue coating machine 7 also includes a controller for controlling the control valve switch to adjust the glue discharge of the glue outlet pipe 73 and a photoelectric sensor 74 for detecting the glue distribution on the front rubber roller 71. The photoelectric sensor 74 is connected to the controller so as to send the glue distribution on the front rubber roller 71 to the controller, and the controller is connected to the control valve so as to control the control valve switch according to the glue distribution and thereby adjust the glue distribution on the front rubber roller 71.

[0047] The invention adopts a variety of materials of different thicknesses, and the thicknesses are matched to improve the structural strength of the product. The jacquard pattern adopts a special style of four stripes, one high and one low, which can effectively block the gold at a low position and improve the success rate of gold panning. Through two times of gluing, the problems of poor gluing uniformity, large gluing amount, and poor stability of continuous production process of the coarse denier blank blanket 8 are solved. The glue adopts waterproof glue, which can effectively save water resources in the gold panning process and solve the problem of a large amount of gold being washed away by flushing. In addition, the finished gold panning blanket weighs 3000 grams, the blanket surface is brushed with 1350 grams, 50 grams of coating glue, and 1600 grams of waterproof coating glue, which is heavy and resistant to washing;

[0048] The cotton opening machine 1 of the present invention realizes cotton opening by arranging a spike rake 13 on the cotton opening roller 12 to grab the fiber group and transport it backward. When in use, the cotton opening roller 12 rotates at a high speed, and the spike rake 13 on the cotton opening roller 12 hooks the fiber and transports it backward. The multiple cotton opening rollers 12 rotate and cooperate with each other to transport the fiber backward. In addition, the tooth spacing of the spike rake teeth on each cotton opening roller 12 changes from dense to sparse. The tooth spacing of the spike rake teeth of the front-stage cotton opening roller 12 is dense, the fiber grabbing speed is fast, and the initial cotton opening efficiency is high. The tooth spacing of the spike rake teeth of the middle-stage cotton opening roller 12 is centered, forming a staggered structure between the spike rake teeth of the middle-stage cotton opening roller 12 and the spike rake teeth of the front-stage cotton opening roller 12. At the same time, the cotton can be opened in a targeted manner according to the cotton opening situation of the front-stage cotton opening roller 12. The tooth spacing of the spike rake teeth of the rear-stage cotton opening roller 12 is sparse, and the cotton can be further opened in a targeted manner according to the cotton opening situation of the middle-stage cotton opening roller 12, so as to form a sense of cotton grabbing layering and ensure opening. Uniformity of cotton; the present invention installs the spike rake 13 on the cotton opening roller 12 by sliding, and sets a magnetic drive mechanism to drive the spike rake teeth of the cotton opening roller 12 to slide continuously, change its cotton grabbing position, so as to effectively ensure the uniformity of cotton opening, prevent the cotton grabbing amount in some places from being large and the cotton grabbing amount in other places from being small, and prevent the cotton piling amount in some places from being large and the cotton piling amount in other places from being small, so as to preliminarily form a fiber web in the cotton opening process, prevent excessive stacking of fiber clusters from compromising the cotton opening effect, and thus effectively improve the cotton opening effect; the present invention effectively solves the problems of poor uniformity of glue coating and large amount of glue coating on the coarse denier blank blanket 8 by improving the glue coating machine. When coating, glue is discharged through the glue discharge pipe 73, and the glue amount on the front glue roller 71 is monitored in real time with the photoelectric sensor 74 to ensure uniform glue discharge, and then ensure uniform glue coating, so as to effectively improve the glue coating quality of the product, and ensure the uniformity and service life of the finished glue layer.

[0049] The preferred embodiments listed above further illustrate the objectives, technical solutions and advantages of the present invention in detail. It should be understood that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A production process of a coarse denier high and low pile wear-resistant gold panning blanket, characterized by: The following steps are involved: (1) opening, mixing, combing and laying coarse denier polyester staple fibers of different thicknesses to form a uniform fiber web, and then needle-punching the fiber web through a pre-needling machine; (2) Processing high and low stripe patterns through jacquard machines; (3) Use a glue coating machine to coat the velvet once; (4) A secondary gluing machine is used to form a waterproof layer, and the blanket is rolled up after the glue is solidified.

2. The process for producing a coarse denier high and low pile wear-resistant gold panning blanket according to claim 1, characterized in that: In step (3), the mass percentage of glue in the first gluing process to the gold panning blanket is 1.67%.

3. The production process of the coarse denier high and low pile wear-resistant gold panning blanket according to claim 1, characterized in that: In step (4), the mass percentage of glue in the secondary gluing is 53.34% of the gold panning blanket.

4. A production equipment for the production process according to any one of claims 1 to 3, characterized in that: It includes a cotton opener, a multi-channel cotton box, a carding machine, a web laying machine, a needle loom, a jacquard machine and a glue coating machine which are connected in sequence. The cotton opener includes a feeding mechanism, a cotton opening mechanism and a discharging mechanism. The cotton opening mechanism includes a frame, a conveyor belt assembly, a plurality of cotton opening rollers and a driver. The conveyor belt assembly is arranged on the frame. The cotton opening roller is rotatably installed on the frame and is located above the conveyor belt assembly. The cotton opening roller is provided with a spike rake for grabbing fibers. The driver is transmission-connected to the cotton opening roller to drive the cotton opening roller to rotate.

5. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 4, characterized in that: The cotton opening rollers include a first cotton opening roller, a second cotton opening roller and a third cotton opening roller which are arranged in sequence along the feeding order, the spike rake includes a spike rake sleeve and spike rake teeth, the spike rake sleeve is sleeved on the cotton opening roller, the spike rake teeth are radially arranged on the spike rake sleeve, and the tooth spacing of the spike rake teeth on the first cotton opening roller, the second cotton opening roller and the third cotton opening roller gradually increases.

6. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 4, characterized in that: A key block is provided on the cotton opening roller, and a long key groove is axially provided on the inner wall of the spike rake sleeve. The key block is slidably installed in the long key groove to slide the spike rake sleeve on the cotton opening roller, thereby changing the position of the spike rake teeth grabbing cotton by sliding the spike rake sleeve to ensure the uniformity of cotton opening.

7. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 6, characterized in that: The cotton opening mechanism also includes a magnetic drive mechanism for driving the spike rake sleeve to move axially along the cotton opening roller. The magnetic drive mechanism includes a magnetic block and a power-carrying coil. The magnetic block is arranged at the end of the spike rake sleeve, and the power-carrying coil is arranged on the frame and located beside the cotton opening roller. The side of the magnetic block adjacent to the power-carrying coil has the same magnetic property as the power-carrying coil, so as to control the axial sliding distance of the spike rake sleeve by adjusting the current of the power-carrying coil.

8. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 7, characterized in that: The cotton opening mechanism also includes a plurality of sensors for detecting the distribution of fiber clusters at the front end of each cotton opening roller and a controller for driving the movement of the nail curtain according to the distribution of fiber clusters detected by the detector. The frame is provided with a mounting rod located above the gap between two adjacent cotton opening rollers, and the sensor is mounted on the mounting rod. The sensor is connected to the controller so as to send the distribution of fiber clusters to the controller. The controller is connected to the power coil so as to adjust the current of the power coil through the controller to control the movement of the nail rake teeth.

9. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 4, characterized in that: The glue coating machine includes a front rubber roller, a rear rubber roller for conveying the blank blanket, and a glue outlet pipe for supplying EVA glue. The rear rubber roller is arranged on the rear side of the front rubber roller and the front rubber roller and the rear rubber roller are rollingly matched. The glue outlet pipe is arranged above the side of the front rubber roller close to the rear rubber roller. The glue outlet pipe is provided with a plurality of glue outlet holes, and each glue outlet hole is provided with a control valve for controlling the glue outlet amount of the glue outlet hole.

10. The coarse denier high and low pile wear-resistant gold panning blanket production equipment according to claim 9, characterized in that: The glue coating machine also includes a controller for controlling the switch of the control valve to thereby adjust the glue output from the glue outlet pipe, and a photoelectric sensor for detecting the distribution of glue on the front rubber roller. The photoelectric sensor is connected to the controller so as to send the glue distribution on the front rubber roller to the controller, and the controller is connected to the control valve so as to control the switch of the control valve according to the glue distribution and thereby adjust the glue distribution on the front rubber roller.

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