Automatic scraping device for thermal printer thermal sheet glue disc

Abstract

The application belongs to the technical field of heat-sensitive sheet manufacturing, in particular to a heat-sensitive sheet glue disc automatic scraping device for a heat-sensitive printer, which comprises a glue smoothing device, the glue smoothing device comprises a fixed support, a cavity is arranged in the fixed support, a glue amount sensor is fixedly connected to the upper part of the fixed support, and a rotating glue disc is rotatably connected to the upper part of the fixed support. Vibration is transmitted to the glue in the rotating glue disc, at this time, the bubbles will merge with each other under the action of vibration, form larger bubbles, and then help the bubbles to rise to the surface of the red glue and break, thereby escaping, and the elimination of the bubbles can ensure that the density and viscosity of the red glue remain consistent, thereby improving the uniformity of dipping. In addition, the reciprocating movement of the piston sheet can timely extract the overflowing red glue, which can quickly and effectively extract the red glue temporarily stored in the outer cavity, avoiding the tediousness and time consumption of manual cleaning, and thereby greatly improving the work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of thermal film manufacturing technology, specifically an automatic scraping device for thermal film trays in thermal printers. Background Technology

[0002] The automatic thermal film tray leveling device for thermal printers is an automated device designed for use inside thermal printers. It uses a mechanical scraper or blade to automatically scrape the surface of the thermal film tray at a certain pressure and speed, aiming to maintain the flatness and cleanliness of the tray surface to ensure print quality and stable printer operation.

[0003] In the prior art, the working principle of the automatic scraping device for thermal film trays in thermal printers is usually that the drive device drives the scraper to reciprocate on the thermal film tray. The scraper contacts the surface of the tray and applies a certain pressure, thereby scraping the adhesive on the surface of the tray flat.

[0004] The above solution still has some problems in practical application. When the red glue is injected into the rotating glue tray, the red glue accelerates downward under the action of gravity. When it collides with the bottom of the rotating glue tray, it generates an impact force. This impact force causes the red glue to splatter and fluctuate, thus entraining air and forming air bubbles. The presence of air bubbles leads to uneven distribution of glue in the container. When the glue applicator picks up glue from such glue, it will pick up glue containing air bubbles, which will affect the uniformity and consistency of the glue, and thus affect the bonding quality. Secondly, the rotating glue tray is full of red glue before work begins. During operation, the added rotary vibration mechanism enhances the fluidity of the red glue. Under the influence of vibration, the molecules inside the red glue are disturbed, leading to an increase in its overall fluidity. When the fluidity increases to a certain level, the red glue overflows from the edge of the glue tray. The overflowing red glue is temporarily stored in the cavity on the outer ring of the rotating glue tray. Cleaning the temporarily stored red glue takes time and manpower, which reduces production efficiency. Especially on automated production lines, if the glue tray needs to be stopped frequently to clean the red glue in the outer cavity, it will interrupt the production process and increase production costs.

[0005] Therefore, the present invention provides an automatic scraping device for the thermal film tray of a thermal printer. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an automatic scraping device for thermal film tray of a thermal printer, which includes a glue smoothing device. The glue smoothing device includes a fixed bracket, and the fixed bracket has a cavity inside. A glue volume sensor is fixedly connected to the upper part of the fixed bracket, and a rotating glue tray is rotatably connected to the upper part of the fixed bracket. A first motor is fixedly installed at the bottom of the fixed bracket, a support frame is fixedly connected to the upper part of the fixed bracket, and a second motor is fixedly installed at the top of the support frame.

[0008] The output end of the second motor is fixedly connected to a crossbar, the side of the crossbar is provided with a slide rail, the slide rail is fixedly connected to the side of the support frame, the rectangular block on the side of the crossbar is slidably connected in the slide rail, the bottom of the crossbar is fixedly connected to a first spring, one end of the crossbar is clamped with a scraper head, and the inside of the colloid smoothing device is provided with a reciprocating vibration mechanism.

[0009] The reciprocating vibration mechanism includes a first gear fixedly mounted on the output shaft of a first motor, a second gear meshing with the side of the first gear, a rotating ring rotatably mounted on the upper part of the second gear, a first protrusion fixedly mounted on the inner ring surface of the rotating ring, and a second protrusion fixedly mounted on the outer ring surface of the rotating rubber disc. The first and second protrusions continuously collide during rotation, generating vibration on the rotating rubber disc, which can improve the dissipation of air bubbles in the rubber inside the rotating rubber disc, thereby improving the consistency of the adhesive head in picking up the adhesive.

[0010] Preferably, the second motor is a stepper motor that can drive the crossbar to move linearly along the guide rail. The scraper head can smooth out the marks left by the glue applicator on the glue surface while the glue disc rotates, thereby maintaining the flatness of the glue surface and improving the uniformity of glue application. The cavity near the outer ring of the rotating glue disc can store a small amount of glue, thereby preventing glue overflow. When the glue quantity sensor detects that the glue has reached a certain amount, it automatically starts the second motor to drive the scraper head to descend to the corresponding height, ensuring that the scraper head can always scrape the glue surface. When the glue height reaches the minimum value, an alarm will be automatically triggered.

[0011] Preferably, a hollow cylinder is rotatably connected to the upper part of the first gear, an intermittent rotating disk is fixedly connected to the top of the hollow cylinder, a guide groove is provided at the bottom of the intermittent rotating disk, an arc-shaped limiting block is fixedly connected to the bottom of the outer ring surface of the intermittent rotating disk, the rotating ring is fixedly connected to the upper part of the intermittent rotating disk, a support frame is fixedly connected to the upper part of the fixed bracket, and the rotating disk is rotatably connected inside the support frame.

[0012] Preferably, the hollow cylinder does not drive the intermittent rotating disk to rotate when the first gear rotates. The intermittent rotating disk can provide corresponding limits for subsequent rotations and drive the intermittent rotating disk to rotate in the opposite direction while limiting the rotation, thereby improving the vibration effect.

[0013] Preferably, a rotating rod is fixedly connected to the middle of the second gear, the bottom of the rotating rod is rotatably connected to the bottom of the inner cavity of the fixed bracket, a fixed rod is fixedly connected to the top of the rotating rod, a guide post is fixedly connected to one end of the fixed rod, and an arc-shaped piece is fixedly connected to the other end of the fixed rod.

[0014] Preferably, the guide post can drive the intermittently rotating disk to perform intermittent motion, avoiding continuous vibration that will cause new air bubbles to be drawn in, thereby improving the consistency of glue application.

[0015] Preferably, the upper part of the reciprocating vibration mechanism is provided with a collection mechanism for adsorbing overflowing colloid. The collection mechanism includes an arc-shaped electric guide rail, which is fixedly connected to the upper part of the support frame. A slider is slidably connected to the arc-shaped electric guide rail. An L-shaped connecting rod is fixedly connected to the side of the slider. The L-shaped connecting rod consists of a vertical rod and a horizontal rod. A scraper is fixedly connected to the bottom of the vertical rod of the L-shaped connecting rod.

[0016] Preferably, the arc-shaped electric guide rail, slider, L-shaped connecting rod and scraper are provided in two sets. The opposite movement of the two sets of scrapers can collect the overflowing glue to the same position, thereby facilitating the subsequent adsorption of the glue.

[0017] Preferably, a fixing block is fixedly connected to one end of the arc-shaped electric guide rail, a suction pipe is fixedly connected through the inside of the fixing block, a piston cylinder is fixedly connected to one end of the suction pipe, an inner cavity is opened inside the piston cylinder, a piston plate is slidably connected to the inner cavity of the piston cylinder, a second spring is fixedly connected to one side of the piston plate, the other end of the second spring is fixedly connected to the side wall of the inner cavity of the piston cylinder, a piston rod is fixedly connected to the middle of the piston plate, the second spring is sleeved on the outer ring surface of the piston rod, an electric telescopic rod is fixedly connected to one end of the piston rod, a discharge pipe is fixedly connected through the outer ring surface of the piston cylinder, a support block is fixedly connected to the outer ring surface of the piston cylinder, the support block is fixedly connected to a fixed bracket, and a collection frame is slidably connected inside the support block.

[0018] Preferably, a one-way valve is provided between the suction pipe and the piston plate, and a one-way valve is provided between the outer ring surface of the piston cylinder and the discharge pipe, and the collection frame is used to collect the colloid.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The automatic leveling device for thermal film trays of a thermal printer, as described in this invention, can drive an intermittent rotating disc to rotate in the opposite direction through the cooperation of a guide column and a guide groove. At the same time, it drives a rotating ring fixed at its top to rotate synchronously. Since the rotation direction of the rotating disc and the rotating ring is opposite, the first protrusion will continuously rub against the second protrusion and vibrate. The vibration will be transmitted to the adhesive inside the rotating disc. At this time, the air bubbles will merge with each other under the action of vibration, forming larger air bubbles, which will help the air bubbles rise to the surface of the red adhesive more quickly and burst, thus escaping. The elimination of air bubbles can ensure that the density and viscosity of the red adhesive remain consistent, thereby improving the uniformity of the coating.

[0021] 2. The automatic scraping device for thermal film trays of a thermal printer described in this invention, when the second spring is compressed to a certain extent, the electric telescopic rod will move in the opposite direction, and at the same time, it will drive the piston plate to move towards the side closer to the suction pipe. At this time, the red glue stored in the inner cavity of the piston cylinder will be squeezed out of the piston cylinder through the discharge pipe, and the squeezed red glue will be collected in the collection frame. The reciprocating motion of the piston plate can promptly extract the overflowing red glue, which can quickly and effectively extract the red glue temporarily stored in the outer cavity, avoiding the tediousness and time-consuming manual cleaning, and thus greatly improving the work efficiency. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0024] Figure 2 This is a side-view three-dimensional structural schematic diagram of the present invention;

[0025] Figure 3 This is a schematic diagram showing the position and structure of the reciprocating vibration mechanism and the collecting mechanism as illustrated in this invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the reciprocating vibration mechanism shown in this invention;

[0027] Figure 5 This is a bottom-view three-dimensional structural diagram of the reciprocating vibration mechanism shown in this invention;

[0028] Figure 6 This is an exploded structural diagram of some components of the reciprocating vibration mechanism shown in this invention;

[0029] Figure 7 This is a schematic diagram showing the position and structure of the colloid smoothing device and the collection mechanism shown in this invention;

[0030] Figure 8This is a three-dimensional structural diagram of the collection mechanism shown in this invention;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of the piston cylinder shown in this invention;

[0032] In the diagram: 1. Colloid smoothing device; 101. Fixed bracket; 102. Colloid quantity sensor; 103. Rotating colloid disc; 104. First motor; 105. Second motor; 106. Slide rail; 107. Crossbar; 108. First spring; 109. Scraper head; 110. Support frame;

[0033] 2. Reciprocating vibration mechanism; 201. First gear; 202. Hollow cylinder; 203. Second gear; 204. Rotating rod; 205. Fixed rod; 206. Guide column; 207. Arc-shaped plate; 208. Intermittent rotating disk; 209. Guide groove; 210. Arc-shaped limiting block; 211. Rotating ring; 212. First protrusion; 213. Second protrusion; 214. Support frame;

[0034] 3. Collection mechanism; 301. Arc-shaped electric guide rail; 302. Slider; 303. L-shaped connecting rod; 304. Scraper; 305. Fixing block; 306. Suction pipe; 307. Piston cylinder; 308. Piston plate; 309. Second spring; 310. Discharge pipe; 311. Piston rod; 312. Electric telescopic rod; 313. Support block; 314. Collection frame. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1:

[0036] like Figures 1 to 9 As shown in the figure, an automatic leveling device for thermal film tray of a thermal printer according to an embodiment of the present invention includes an adhesive leveling device 1. The adhesive leveling device 1 includes a fixed bracket 101. The fixed bracket 101 has a cavity inside. An adhesive quantity sensor 102 is fixedly connected to the upper part of the fixed bracket 101. A rotating adhesive tray 103 is rotatably connected to the upper part of the fixed bracket 101. A first motor 104 is fixedly installed at the bottom of the fixed bracket 101. A support frame 110 is fixedly connected to the upper part of the fixed bracket 101. A second motor 105 is fixedly installed at the top of the support frame 110.

[0037] The output end of the second motor 105 is fixedly connected to a crossbar 107. A slide rail 106 is provided on the side of the crossbar 107. The slide rail 106 is fixedly connected to the side of the support frame 110. A rectangular block on the side of the crossbar 107 is slidably connected in the slide rail 106. A first spring 108 is fixedly connected to the bottom of the crossbar 107. A scraper head 109 is snapped onto one end of the crossbar 107. A reciprocating vibration mechanism 2 is provided inside the colloid smoothing device 1.

[0038] The reciprocating vibration mechanism 2 includes a first gear 201 fixedly mounted on the output shaft of the first motor 104, a second gear 203 meshing with the side of the first gear 201, a rotating ring 211 rotatably mounted on the upper part of the second gear 203, a first protrusion 212 fixedly mounted on the inner ring surface of the rotating ring 211, and a second protrusion 213 fixedly mounted on the outer ring surface of the rotating glue disk 103. The first protrusion 212 and the second protrusion 213 continuously collide during rotation to generate vibration on the rotating glue disk 103, which can improve the dissipation of colloid air bubbles inside the rotating glue disk 103, thereby improving the consistency of the glue pick-up of the glue head.

[0039] Specifically, when red glue is injected into the rotating glue tray 103, the red glue accelerates as it falls under the influence of gravity. When it collides with the bottom of the rotating glue tray 103, it generates an impact force. This impact force causes the red glue to splash and fluctuate, thereby entraining air and forming air bubbles. The presence of air bubbles leads to uneven distribution of glue in the container. When the glue applicator picks up glue from such glue, it will pick up glue containing air bubbles, which will affect the uniformity and consistency of the glue, and thus affect the bonding quality.

[0040] Therefore, this invention solves this problem by setting a corresponding structure. The thermal printer thermal film tray automatic scraping device of this invention, when the device is started, uses an adhesive applicator to apply red glue placed inside the rotating tray 103. After the adhesive applicator completes the application, an imprint of the adhesive applicator appears on the surface of the red glue. The rotating tray 103 rotates on the upper part of the fixed bracket 101 under the drive of the first motor 104, and simultaneously starts the second motor 105 fixed on the top of the support frame 110. At this time, the crossbar 107 fixed at the output end of the second motor 105 moves under the guidance of the slide rail 106, and squeezes the first spring 108 during the movement. When the crossbar 107 moves, it drives the scraper head 109 to move synchronously, and the scraper head 109 scrapes the imprint on the surface of the red glue. The glue quantity sensor 102 detects the remaining glue inside the rotating tray 103 in real time to adjust the height of the scraper head 109 in a timely manner. However, because red glue is injected into the rotating tray 103... When the red glue accelerates downward under gravity and collides with the bottom of the rotating glue tray 103, it generates an impact force. This impact force causes the red glue to splash and fluctuate, thus entraining air and forming air bubbles. The presence of air bubbles leads to uneven distribution of glue in the container. When the glue applicator picks up glue from such glue, it will pick up glue containing air bubbles, which will affect the uniformity and consistency of the glue, and thus affect the bonding quality. At this time, the rotation of the first motor 104 drives the first gear 201 to rotate synchronously, and at the same time, it drives the second gear 203 meshing with it to rotate in the opposite direction, which in turn drives the rotating ring 211 to rotate in the opposite direction. Since the first protrusion 212 on the inner ring surface of the rotating ring 211 and the second protrusion 213 on the outer ring surface of the rotating glue tray 103 will continuously rub against each other during the rotation, vibration will be generated. The vibration will be transmitted to the interior of the red glue through the rotating glue tray 103, thereby increasing the escape speed of the glue air bubbles inside the rotating glue tray 103, and further improving the uniformity and consistency of the glue. Example 2:

[0041] like Figures 1 to 9 As shown in Example 1, another embodiment of the present invention is as follows:

[0042] like Figure 4 and Figure 5 As shown, in this embodiment, a rotating rod 204 is fixedly connected to the middle of the second gear 203. The bottom of the rotating rod 204 is rotatably connected to the bottom of the inner cavity of the fixed bracket 101. A fixed rod 205 is fixedly connected to the top of the rotating rod 204. A guide post 206 is fixedly connected to one end of the fixed rod 205, and an arc-shaped piece 207 is fixedly connected to the other end of the fixed rod 205.

[0043] Specifically, when the inside of the rotating rubber disc 103 is filled with red glue, the first motor 104 will be started. At this time, the rotating rubber disc 103 fixed at the top of the output shaft of the first motor 104 will rotate, and the first gear 201 fixed in the middle of the output shaft of the first motor 104 will also rotate synchronously. While rotating, it will drive the second gear 203 meshing with it to rotate in the opposite direction. Since the rotating rod 204 in the middle of the second gear 203 rotates at the bottom of the inner cavity of the fixed bracket 101 and is fixed in the middle of the second gear 203, the rotating rod 204 will rotate in the opposite direction while the second gear 203 rotates in the opposite direction. This will drive the guide column 206 and the arc-shaped piece 207 to rotate synchronously. The reverse rotation of the second gear 203 can avoid the situation of relative stillness that occurs when rotating in the same direction.

[0044] like Figure 5 and Figure 6 As shown, in this embodiment, a hollow cylinder 202 is rotatably connected to the upper part of the first gear 201. An intermittent rotating disk 208 is fixedly connected to the top of the hollow cylinder 202. A guide groove 209 is provided at the bottom of the intermittent rotating disk 208. An arc-shaped limiting block 210 is fixedly connected to the bottom of the outer ring surface of the intermittent rotating disk 208. A rotating ring 211 is fixedly connected to the upper part of the intermittent rotating disk 208. A support frame 214 is fixedly connected to the upper part of the fixed bracket 101. The rotating rubber disk 103 is rotatably connected inside the support frame 214.

[0045] Specifically, when the first gear 201 rotates, since the first gear 201 and the hollow cylinder 202 are rotating, the hollow cylinder 202 will not rotate when the first gear 201 rotates, and thus will not drive the intermittent rotating disk 208 to rotate. When the first gear 201 rotates, it will drive the second gear 203 meshing with it to rotate in the opposite direction, and at the same time drive the rotating rod 204, the fixed rod 205, the guide post 206 and the arc-shaped piece 207 to rotate synchronously. When the guide post 206 slides into a set of guide grooves 209, the arc surface of the arc-shaped piece 207 will gradually rotate towards the hollow cylinder 202.

[0046] When the guide post 206 moves to one end of a set of guide grooves 209 near the outer ring surface, the guide post 206, the fixed rod 205, and the arc-shaped piece 207 will be parallel to the guide grooves 209 on the same vertical plane. However, the second gear 203 will also drive the rotating rod 204 to rotate continuously. At this time, the guide post 206 sliding in the guide groove 209 will slide inward along the original guide groove 209, while the arc-shaped piece 207 will gradually come into contact with a set of arc-shaped limiting blocks 210. When the arc-shaped piece 207 is completely in contact with the arc surface of the arc-shaped limiting block 210, the guide post 206, the fixed rod 205, and the arc-shaped piece 207 will be between the two sets of guide grooves 209. At this time, the cooperation of the guide post 206 and the guide groove 209 can drive the intermittent rotating disk 208 to rotate in the opposite direction, and at the same time drive the rotating ring 211 fixed at its top to rotate synchronously.

[0047] Since the rotating rubber disc 103 rotates in the opposite direction to the rotating ring 211, the first protrusion 212 will continuously rub against the second protrusion 213 and vibrate. The vibration will be transmitted to the rubber inside the rotating rubber disc 103. At this time, the air bubbles will merge with each other under the action of vibration, forming larger air bubbles, which will help the air bubbles rise to the surface of the red rubber faster and burst, thus escaping. The elimination of air bubbles can ensure that the density and viscosity of the red rubber remain consistent, thereby improving the uniformity of dipping.

[0048] like Figure 8 As shown, the reciprocating vibration mechanism 2 in this embodiment is provided with a collection mechanism 3 for adsorbing overflowing colloids. The collection mechanism 3 includes an arc-shaped electric guide rail 301, which is fixedly connected to the upper part of the support frame 214. A slider 302 is slidably connected to the arc-shaped electric guide rail 301. An L-shaped connecting rod 303 is fixedly connected to the side of the slider 302. The L-shaped connecting rod 303 is composed of a vertical rod and a horizontal rod. A scraper 304 is fixedly connected to the bottom of the vertical rod of the L-shaped connecting rod 303.

[0049] Specifically, when the reciprocating vibration mechanism 2 completes its work, the arc-shaped electric guide rail 301 is activated. At this time, the two sets of arc-shaped electric guide rails 301 will drive a set of sliders 302 to move relative to each other. While the sliders 302 are moving, they will also drive the L-shaped connecting rod 303 and the scraper 304 to move synchronously. Since the length of the scraper 304 is adapted to the distance between the two side walls of the rotating rubber disk 103, the scraper 304 will not get stuck when it moves. While the two sets of scrapers 304 are moving, the red glue overflowing in the outer cavity of the rotating rubber disk 103 will be collected, thereby improving the working efficiency of the subsequent devices.

[0050] like Figure 9As shown in the figure, in this embodiment, a fixing block 305 is fixedly connected to one end of the arc-shaped electric guide rail 301. A suction pipe 306 is fixedly connected through the fixing block 305. A piston cylinder 307 is fixedly connected to one end of the suction pipe 306. An inner cavity is opened inside the piston cylinder 307. A piston plate 308 is slidably connected to the inner cavity of the piston cylinder 307. A second spring 309 is fixedly connected to one side of the piston plate 308. The other end of the second spring 309 is fixedly connected to the inner cavity of the piston cylinder 307. On the side wall, a piston rod 311 is fixedly connected to the middle of the piston plate 308. The second spring 309 is sleeved on the outer ring surface of the piston rod 311. An electric telescopic rod 312 is fixedly connected to one end of the piston rod 311. A discharge pipe 310 is fixedly connected through the outer ring surface of the piston cylinder 307. A support block 313 is fixedly connected to the outer ring surface of the piston cylinder 307. The support block 313 is fixedly connected to the fixed bracket 101. A collection frame 314 is slidably connected inside the support block 313.

[0051] Specifically, when the two sets of scraper blades 304 complete the collection process, the electric telescopic rod 312 is activated. The electric telescopic rod 312 will pull the piston plate 308 away from the suction pipe 306 via the piston rod 311. At this time, the second spring 309 will be gradually compressed, and the red glue collected by the two sets of scraper blades 304 will be sucked into the inner cavity of the piston cylinder 307 through the suction pipe 306. Since a one-way valve is installed between the discharge pipe 310 and the piston cylinder 307, the piston cylinder 307 remains sealed when sucking up the glue, thereby reducing the possibility of contamination from overflowing red glue. When the second spring 309... When 09 is compressed to a certain extent, the electric telescopic rod 312 will move in the opposite direction, and at the same time, it will drive the piston plate 308 to move closer to the suction pipe 306. At this time, the red glue stored in the inner cavity of the piston cylinder 307 will be squeezed out of the piston cylinder 307 through the discharge pipe 310. The squeezed red glue will be collected in the collection frame 314. The reciprocating motion of the piston plate 308 can extract the overflowing red glue in time. It can quickly and effectively extract the red glue temporarily stored in the outer cavity, avoiding the tediousness and time-consuming manual cleaning, thus greatly improving the efficiency of work.

[0052] Working principle: When the inside of the rotating rubber disc 103 is filled with red glue, the first motor 104 will be started. At this time, the rotating rubber disc 103 fixed at the top of the output shaft of the first motor 104 will rotate. At the same time, the first gear 201 fixed in the middle of the output shaft of the first motor 104 will also rotate synchronously. While rotating, it will drive the second gear 203 meshing with it to rotate in the opposite direction. Since the rotating rod 204 in the middle of the second gear 203 rotates at the bottom of the inner cavity of the fixed bracket 101 and is fixed in the middle of the second gear 203, the rotating rod 204 will rotate in the opposite direction when the second gear 203 rotates in the opposite direction. This will drive the guide column 206 and the arc-shaped piece 207 to rotate synchronously. The reverse rotation of the second gear 203 can avoid the situation of relative stillness that occurs when rotating in the same direction.

[0053] When the first gear 201 rotates, since the first gear 201 and the hollow cylinder 202 are rotating, the hollow cylinder 202 will not rotate when the first gear 201 rotates, and thus will not drive the intermittent rotating disk 208 to rotate. When the first gear 201 rotates, it will drive the second gear 203 meshing with it to rotate in the opposite direction. At the same time, it will drive the rotating rod 204, the fixed rod 205, the guide post 206 and the arc-shaped piece 207 to rotate synchronously. When the guide post 206 slides into a set of guide grooves 209, the arc surface of the arc-shaped piece 207 will gradually rotate towards the hollow cylinder 202.

[0054] When the guide post 206 moves to one end of a set of guide grooves 209 near the outer ring surface, the guide post 206, the fixed rod 205, and the arc-shaped piece 207 will be parallel to the guide grooves 209 on the same vertical plane. However, the second gear 203 will also drive the rotating rod 204 to rotate continuously. At this time, the guide post 206 sliding in the guide groove 209 will slide inward along the original guide groove 209, while the arc-shaped piece 207 will gradually come into contact with a set of arc-shaped limiting blocks 210. When the arc-shaped piece 207 is completely in contact with the arc surface of the arc-shaped limiting block 210, the guide post 206, the fixed rod 205, and the arc-shaped piece 207 will be between the two sets of guide grooves 209. At this time, the cooperation of the guide post 206 and the guide groove 209 can drive the intermittent rotating disk 208 to rotate in the opposite direction, and at the same time drive the rotating ring 211 fixed at its top to rotate synchronously.

[0055] Since the rotating rubber disc 103 rotates in the opposite direction to the rotating ring 211, the first protrusion 212 will continuously rub against the second protrusion 213 and vibrate. The vibration will be transmitted to the rubber inside the rotating rubber disc 103. At this time, the air bubbles will merge with each other under the action of vibration, forming larger air bubbles, which will help the air bubbles rise to the surface of the red rubber faster and burst, thus escaping. The elimination of air bubbles can ensure that the density and viscosity of the red rubber remain consistent, thereby improving the uniformity of dipping. At the same time, the intermittent vibration can avoid excessive vibration.

[0056] When the reciprocating vibration mechanism 2 completes its work, the arc-shaped electric guide rail 301 is activated. At this time, the two sets of arc-shaped electric guide rails 301 will drive a set of sliders 302 to move relative to each other. While the sliders 302 are moving, they will also drive the L-shaped connecting rod 303 and the scraper 304 to move synchronously. Since the length of the scraper 304 is adapted to the distance between the two side walls of the rotating rubber disk 103, the scraper 304 will not get stuck when it moves. While the two sets of scrapers 304 are moving, the red glue overflowing in the outer cavity of the rotating rubber disk 103 will be collected, thereby improving the working efficiency of the subsequent devices.

[0057] When the two sets of scraper blades 304 finish collecting, the electric telescopic rod 312 is activated. The electric telescopic rod 312 will pull the piston plate 308 away from the suction pipe 306 via the piston rod 311. At this time, the second spring 309 will be gradually compressed, and the red glue collected by the two sets of scraper blades 304 will be sucked into the inner cavity of the piston cylinder 307 through the suction pipe 306. Since a one-way valve is installed between the discharge pipe 310 and the piston cylinder 307, the piston cylinder 307 remains sealed when sucking up the glue, thereby reducing the possibility of contamination from spilled red glue. When the second spring 309... When compressed to a certain extent, the electric telescopic rod 312 will move in the opposite direction, and at the same time, it will drive the piston plate 308 to move closer to the suction pipe 306. At this time, the red glue stored in the inner cavity of the piston cylinder 307 will be squeezed out of the piston cylinder 307 through the discharge pipe 310. The squeezed red glue will be collected in the collection frame 314. The reciprocating motion of the piston plate 308 can extract the overflowing red glue in time. The red glue that overflows and is temporarily stored in the outer cavity can be extracted quickly and effectively, avoiding the tediousness and time-consuming manual cleaning, thus greatly improving the efficiency of work.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kind of thermosensitive printer thermosensitive sheet glue disc automatic scraping device, including glue flattening device (1), the glue flattening device (1) includes fixed support (101), the fixed support (101) inside is provided with cavity, the fixed support (101) upper portion is fixedly connected with glue amount sensor (102), the fixed support (101) upper portion is rotatably connected with rotating glue disc (103), the fixed support (101) bottom is fixedly provided with first motor (104), the fixed support (101) upper portion is fixedly connected with support frame (110), the support frame (110) top is fixedly provided with second motor (105); The second motor (105) output end is fixedly connected with a cross rod (107), the cross rod (107) side is provided with a slide rail (106), the slide rail (106) is fixedly connected on the support frame (110) side, the cross rod (107) side rectangular block is slidably connected in the slide rail (106), the cross rod (107) bottom is fixedly connected with a first spring (108), and the cross rod (107) one end is clamped with a scraping head (109), characterized in that: The glue flattening device (1) is provided with reciprocating vibration mechanism (2) inside; Reciprocating vibration mechanism (2) includes first gear (201) fixedly arranged on the output shaft of first motor (104), first gear (201) side is engaged with second gear (203), second gear (203) upper portion is rotatably provided with rotating ring (211), rotating ring (211) inner ring surface is fixedly provided with first convex point (212), rotating glue disc (103) outer ring surface is fixedly provided with second convex point (213), by the constant resistance of first convex point (212) and second convex point (213) in the process of rotation to rotating glue disc (103) generates vibration, can improve the dissipation of glue bubble in rotating glue disc (103), in turn can improve the consistency of glue dipping head dipping glue; The first gear (201) upper portion is rotatably connected with hollow cylinder (202), the hollow cylinder (202) top is fixedly connected with intermittent rotating disc (208), the intermittent rotating disc (208) bottom is provided with guide slot (209), the intermittent rotating disc (208) outer ring surface bottom is fixedly connected with arc limit block (210), the rotating ring (211) is fixedly connected on the upper portion of intermittent rotating disc (208), the fixed support (101) upper portion is fixedly connected with support frame (214), the rotating glue disc (103) is rotatably connected in the inside of support frame (214); The hollow cylinder (202) will not drive intermittent rotating disc (208) to rotate when the first gear (201) rotates, the intermittent rotating disc (208) can provide corresponding limit for subsequent rotation, and drive the intermittent rotating disc (208) to rotate reversely while being limited, thereby improving the effect of vibration; The second gear (203) middle portion is fixedly connected with rotating rod (204), the rotating rod (204) bottom is rotatably connected in the bottom of the inner cavity of fixed support (101), the rotating rod (204) top is fixedly connected with fixed rod (205), the fixed rod (205) one end is fixedly connected with guide column (206), the fixed rod (205) other end is fixedly connected with arc piece (207); The guide column (206) can drive intermittent rotating disc (208) to move intermittently, avoid continuous vibration to involve new bubbles, in turn can improve the consistency of glue dipping; The rotating glue disc (103) is driven by the first motor (104) to rotate on the upper part of the fixed support (101).

2. The automatic scraping device for thermal printer thermal sheet glue disc according to claim 1, characterized in that: The second motor (105) is a step motor which can drive the cross rod (107) to move linearly along the guide of the slide rail (106), and the scraping head (109) can scrape the glue marks on the glue surface taken by the glue head while the rotating glue disc (103) rotates, so as to keep the glue surface flat, and thus improve the uniformity of the glue taken by the glue head. The cavity near the outer surface of the rotating glue disc (103) can store a small amount of glue, so as to prevent the glue from overflowing. When the glue reaches a certain amount, the glue amount sensor (102) automatically starts the second motor (105) to drive the scraping head (109) to descend by a corresponding height, so that the scraping head (109) can always scrape the surface of the glue. When the height of the glue reaches the minimum value, an automatic alarm will be triggered.

3. The automatic thermal sheet glue disc scraping device of a thermal printer according to claim 2, characterized in that: The upper part of the reciprocating vibration mechanism (2) is provided with a collecting mechanism (3) for adsorbing the overflowed glue. The collecting mechanism (3) comprises an arc-shaped electric guide rail (301) fixedly connected to the upper part of the support frame (214). A sliding block (302) is slidably connected to the arc-shaped electric guide rail (301). An L-shaped connecting rod (303) is fixedly connected to the side surface of the sliding block (302). The L-shaped connecting rod (303) is composed of a vertical rod and a horizontal rod. A scraping blade (304) is fixedly connected to the bottom of the vertical rod of the L-shaped connecting rod (303).

4. The automatic thermal sheet glue disc scraping device of a thermal printer according to claim 3, characterized in that: The arc-shaped electric guide rail (301), the sliding block (302), the L-shaped connecting rod (303) and the scraping blade (304) are provided with two groups. The opposite movement of the two groups of scraping blades (304) can collect the overflowed glue to the same position, thereby facilitating the subsequent adsorption work of the glue.

5. The automatic thermal sheet glue disc scraping device of a thermal printer according to claim 4, characterized in that: One end of the arc-shaped electric guide rail (301) is fixedly connected with a fixed block (305). An absorbing pipe (306) penetrates through the fixed block (305). One end of the absorbing pipe (306) is fixedly connected with a piston cylinder (307). An inner cavity is formed in the piston cylinder (307). A piston plate (308) is slidably connected in the inner cavity of the piston cylinder (307). A second spring (309) is fixedly connected to one side of the piston plate (308). The other end of the second spring (309) is fixedly connected to the side wall of the inner cavity of the piston cylinder (307). A piston rod (311) is fixedly connected to the middle part of the piston plate (308). The second spring (309) is sleeved on the outer surface of the piston rod (311). One end of the piston rod (311) is fixedly connected with an electric telescopic rod (312). The outer surface of the piston cylinder (307) penetrates through a discharging pipe (310). A support block (313) is fixedly connected to the outer surface of the piston cylinder (307). The support block (313) is fixedly connected to the fixed support (101). A collecting frame (314) is slidably connected in the support block (313).

6. The automatic thermal sheet glue disc scraping device of a thermal printer according to claim 5, characterized in that: The suction pipe (306) is provided with a one-way valve between the piston sheet (308), the piston cylinder (307) outer ring surface is provided with a one-way valve between the discharge pipe (310), the collection frame (314) is used for collecting colloid.

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