Thermal compression bonding device for resistance screen production

Abstract

The invention belongs to the technical field of resistance screen processing, and particularly relates to a resistance screen production thermocompression bonding device which comprises a hot press body, an auxiliary operation mechanism, a linkage mechanism and a turning mechanism. The hot press body is used for conducting the thermocompression bonding process on a resistance screen and comprises a rack and a containing table arranged on the rack and used for containing the resistance screen; the lifting plate is located above the placing table in a lifting mode, a hot pressing plate is fixedly arranged at the bottom of the lifting plate, and an electric heating plate is arranged on the inner side of the hot pressing plate. Through cooperation of the linkage mechanism and the direction changing mechanism, the mounting frame can be synchronously driven to move in the lifting process of the lifting plate, automatic connection of dust sweeping, hot pressing and cooling is achieved, and manual intervention is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of resistive screen processing, in particular to a thermal pressing device for producing resistive screens. Background Art

[0002] A resistive screen is a screen that achieves touch operation through pressure sensing. Hot pressing is a key process in the production of resistive screens. Its core purpose is to tightly fit multiple layers of materials (such as conductive film, substrate, protective film, etc.) through heating and pressurization to ensure touch function and structural strength. At present, the hot pressing device in the production of resistive screens usually uses a hot press to perform the hot pressing process.

[0003] The common heat press machines on the market have relatively simple functions, and most of them only have hot pressing functions. Since the dust on the hot pressing surface of the resistive screen needs to be reduced before hot pressing, common heat press machines lack proper dust removal operations on the surface of the resistive screen. Moreover, after the hot pressing of the resistive screen is completed, the traditional natural cooling method is adopted, which is less efficient. Common heat press machines lack a mechanism to assist the resistive screen in cooling down.

[0004] Even though some hot presses on the market may be equipped with separate dust removal and cooling equipment, each functional module operates independently and requires manual operation to connect the processes. The production efficiency still needs to be improved. Therefore, it is necessary to develop a hot pressing device for resistive screen production. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A heat pressing device for producing a resistive screen, comprising a heat pressing machine body, an auxiliary operation mechanism, a linkage mechanism, and a direction-changing mechanism:

[0008] The hot press body is used to perform a hot pressing process on the resistive screen. The hot press body includes a frame and a placement table provided on the frame for placing the resistive screen, and a lifting plate positioned above the placement table. A hot pressing plate is fixedly provided at the bottom of the lifting plate, and an electric heating plate is provided on the inner side of the hot pressing plate.

[0009] The auxiliary operation mechanism includes a dust sweeping mechanism for performing a dust sweeping process on the resistive screen before hot pressing, and a cooling mechanism for performing a cooling process on the resistive screen after hot pressing. The auxiliary operation mechanism also includes a mounting frame that moves along the front-to-back direction of the resistive screen surface, the dust sweeping mechanism and the cooling mechanism are respectively arranged at the bottom and top of the mounting frame, and the left and right ends of the mounting frame are respectively fixed with horizontal follower rods;

[0010] The linkage mechanism is used to synchronously drive the mounting frame to move back and forth in the forward and backward directions during the lifting and lowering process of the lifting plate;

[0011] The direction-changing mechanism includes a first ratchet gear and a second ratchet gear fixed on the rod body of each follower rod, and a first limiting mechanism and a second limiting mechanism arranged on the top of the placement table for controlling the rotation direction and angle of the follower rod.

[0012] As a preferred embodiment of the resistive screen production hot pressing device of the present invention, a positioning frame is fixedly provided on the top of the placement table, the positioning frame is frame-shaped and is located directly below the hot pressing plate, the bottom shape of the hot pressing plate and the overall shape of the positioning frame are mutually fitted, the inner side size of the positioning frame is consistent with the resistive screen, and the inner side of the positioning frame is symmetrically concave on both sides with finger grooves;

[0013] A vertical electric telescopic cylinder is fixedly provided at the center of the top of the inner cavity of the placement table, and the output rod of the electric telescopic cylinder is fixed at the center of the top wall of the lifting plate;

[0014] The lifting plate is rectangular, and vertical guide rods are fixedly arranged between the upper and lower walls of the inner cavity of the placement table near the four top corners of the lifting plate. The rod bodies of the four guide rods slide vertically through the upper and lower walls of the four top corners of the lifting plate through linear bearings.

[0015] As a preferred solution of the resistive screen production hot pressing device described in the present invention, wherein: the mounting frame is a long rectangular body, the inner cavity of the mounting frame is provided with a mounting cavity, the front and rear sides of the mounting cavity are connected to the outside, the top of the mounting frame is provided with multiple air outlets, the multiple air outlets are arranged at equal intervals along the length direction of the mounting frame, a protective net is fixedly provided on the inner side of each air outlet, and dustproof nets are installed on the front and rear sides of the mounting cavity by screws.

[0016] As a preferred solution of a resistive screen production hot pressing device described in the present invention, the cooling mechanism includes a plurality of small cooling fans fixed at equal intervals at the bottom of the installation cavity, the plurality of small cooling fans correspond one-to-one to the plurality of air outlets, and the small cooling fans are spaced apart from the protective net.

[0017] As a preferred embodiment of the resistive screen production hot pressing device of the present invention, the cooling mechanism includes a plurality of vertical rotating rods rotatably arranged at equal intervals on the inner bottom of the mounting cavity through bearings, and a fan blade is provided on the top of each rotating rod. The fan blade corresponds to the air outlet one by one, and the fan blade is spaced apart from the protective net.

[0018] The inner bottom of the installation cavity is provided with multiple brackets along its own length direction, and the side walls of the multiple brackets are rotatably penetrated by bearing sleeves to provide a horizontal driving rod, and a worm gear is fixedly provided on the rod body of each rotating rod, and a worm gear engaging with the worm gear is provided on the rod body of the driving rod. A motor is provided on one side of the driving rod at the bottom of the inner wall of the installation cavity, and the output shaft of the motor is connected to the end of the driving rod through a coupling.

[0019] As a preferred solution of the resistive screen production hot pressing device described in the present invention, the dust sweeping mechanism includes a dust sweeping brush arranged on the bottom surface of the mounting frame, the top of the dust sweeping brush is provided with a Velcro male surface, and the bottom of the mounting frame is provided with a Velcro female surface for connecting the Velcro male surface, and the length of the dust sweeping brush is greater than the length of the resistive screen.

[0020] As a preferred embodiment of the resistive screen production hot pressing device described in the present invention, the linkage mechanism includes fixed frames fixed on both sides of the top of the placement table, the two fixed frames are arranged symmetrically with respect to the positioning frame, the side view cross section of the fixed frames is "L"-shaped, the top of the lifting plate is provided with a through opening for the fixed frames to pass through, the side of the fixed frames away from the positioning frame is provided with a slide groove, the side view cross section of the slide groove is "L"-shaped and the side away from the positioning frame is connected to the outside of the fixed frames;

[0021] The first and second sliding seats are respectively slidably provided on the inner side of the slide groove in the vertical and front-back directions, and the side walls of the first sliding seat are fixedly connected to the inner side wall of the through-hole through a fixing block, and the side walls of the first sliding seat and the second sliding seat are protruding and fixed with a first mounting rod, and a linkage rod is connected between the two first mounting rods, and the two ends of the linkage rod are rotatably connected to the two first mounting rods through bearings, and the front end of the bottom side wall of the fixed frame and the center of the side wall of the linkage rod are respectively protruding and fixed with a second mounting rod, and an auxiliary rod is connected between the two second mounting rods, and the two ends of the auxiliary rod are rotatably connected to the two second mounting rods through bearings;

[0022] A strip-shaped opening is opened on one side of the fixing frame close to the positioning frame, and the rods of the two follower rods pass through the strip-shaped opening and the ends thereof are rotatably connected to the side walls of the two second sliding seats respectively;

[0023] Grooves are respectively provided on the front and rear sides of the first sliding seat and the upper and lower sides of the second sliding seat. The first sliding seat and the second sliding seat are in an "I" shape. Pulleys are rotatably provided at equal intervals on the inner sides of the grooves. The outer sides of the pulleys roll on the inner sides of the slide grooves.

[0024] The linkage rods and the auxiliary rods are staggered and located outside the fixing frame. When the linkage rods and the auxiliary rods move, they always maintain a spacing arrangement with the lifting plate and the guide rods.

[0025] As a preferred embodiment of the heat pressing device for producing a resistive screen according to the present invention, the linkage mechanism drives the mounting frame to move from front to back during the descending process of the lifting plate, and the dust sweeping mechanism sweeps dust along the surface of the resistive screen;

[0026] When the dust sweeping mechanism completes the dust sweeping operation, that is, when the dust sweeping mechanism completely passes through the area where the positioning frame is located, the lifting plate is still in the descending state, and under the action of the first limiting mechanism, it starts to drive the follower rod to rotate counterclockwise until the lifting plate is completely lowered, and the follower rod rotates 180 degrees counterclockwise and stops, so that the cooling mechanism is downward;

[0027] When the lifting plate is completely lowered, the hot pressing plate performs hot pressing on the resistive screen. When the hot pressing of the resistive screen is completed and the lifting plate gradually rises, the linkage mechanism drives the mounting frame to move from back to front, and performs cooling along the surface of the resistive screen through the gap of the cooling mechanism;

[0028] When the cooling mechanism completes the cooling operation, that is, when the cooling mechanism has completely passed through the area where the positioning frame is located, the lifting plate is still in an ascending state. Under the action of the second limiting mechanism, it begins to drive the follower rod to rotate clockwise until the lifting plate is fully ascended. The follower rod rotates 180° clockwise and stops, so that the dust sweeping mechanism is facing downward and the device is reset.

[0029] As a preferred embodiment of the resistive screen production hot pressing device of the present invention, the first ratchet gear and the second ratchet gear are arranged side by side with a distance therebetween, and the teeth of the first ratchet gear and the second ratchet gear face in opposite directions;

[0030] The first limiting mechanism includes a first fixing bar fixed to the top of the placing table and located on the left and right sides of the rear positioning frame, the first fixing bars on the left and right sides are respectively aligned with the first ratchet gears on the left and right sides, the top of the first fixing bar is provided with first receiving grooves at equal intervals, the inner side of each first receiving groove is provided with a first limiting ratchet tooth that is rotated by a rotating shaft, the first limiting ratchet tooth is in the shape of a right-angled triangle, and a first elastic member is provided between the bottom wall of the first limiting ratchet tooth and the inner bottom of the first receiving groove;

[0031] When the first ratchet gear moves from front to back, the first elastic member pushes the first limiting ratchet teeth to block and initially engage with the teeth of the first ratchet gear, and the first ratchet gear rolls along the top of the first limiting ratchet teeth; when the first ratchet gear moves from back to front, the inclined surface of the teeth of the first ratchet gear contacts the inclined surface of the first limiting ratchet teeth, pushing the first limiting ratchet teeth into the inner side of the first receiving groove, and the first elastic member is compressed. At this time, the first limiting ratchet teeth will not block the movement of the first ratchet gear;

[0032] The second limiting mechanism includes a second fixing bar fixed to the top of the placing table and located on the left and right sides in front of the positioning frame, the second fixing bars on the left and right sides are respectively aligned with the second ratchet gears on the left and right sides, and second receiving grooves are opened at equal intervals on the top of the second fixing bar. A second limiting ratchet tooth is provided on the inner side of each second receiving groove through rotation of the rotating shaft, and the second limiting ratchet tooth is in the shape of a right-angled triangle. A second elastic member is provided between the bottom wall of the second limiting ratchet tooth and the inner bottom of the second receiving groove;

[0033] Among them, when the second ratchet gear moves from back to front, the second elastic member pushes the second limiting ratchet teeth to block and initially engage with the teeth of the second ratchet gear, and the second ratchet gear rolls along the top of the second limiting ratchet teeth; when the second ratchet gear moves from front to back, the inclined surface of the teeth of the second ratchet gear contacts the inclined surface of the second limiting ratchet teeth, pushing the second limiting ratchet teeth into the inner side of the second receiving groove, and the second elastic member is compressed. At this time, the second limiting ratchet teeth will not hinder the movement of the second ratchet gear.

[0034] As a preferred embodiment of the heat pressing device for producing a resistive screen according to the present invention, a stabilizing mechanism is further provided, wherein the stabilizing mechanism is provided on the two second sliding seats and is used to "lock" the follower rod when the auxiliary operating mechanism performs dust sweeping and cooling operations;

[0035] The stabilizing mechanism includes a fixed cylinder fixed to a side of the second sliding seat close to the follower rod, an end of the follower rod away from the mounting bracket is rotated and located inside the fixed cylinder, and a limit plate is protruded from one end of the follower rod located in the inner cavity of the fixed cylinder, the outer diameter of the limit plate is larger than the outer diameter of the follower rod, and a locking rod is fixedly provided on the other side of the limit plate, and the locking rod is coaxially arranged with the follower rod;

[0036] The inner cavity of the fixed cylinder is symmetrically provided with arc-shaped locking clamps for clamping the locking rod. The concave sides of the two locking clamps fit into the outer sides of the locking rod. A third elastic member is semi-surrounded between the convex sides of the two locking clamps and the inner side wall of the fixed cylinder. The concave sides of the locking clamps and the outer sides of the locking rod are both provided with anti-slip grooves.

[0037] The beneficial effects of the present invention are as follows: when the lifting plate descends, the dust-sweeping brush is driven to sweep the resistive screen from front to back, reducing dust adhesion on the surface of the resistive screen. After the lifting plate is lowered into position, the follower rod rotates 180 degrees to direct the cooling mechanism downward. After the hot pressing is completed, when the lifting plate rises, the cooling mechanism dissipates heat from the hot-pressed resistive screen from back to front. After the lifting plate is raised into position, the dust-sweeping mechanism is reset, forming a cyclic operation. In other words, the linkage mechanism and the direction-changing mechanism can be used to synchronously drive the movement of the mounting frame during the lifting plate's ascent and descent, achieving automated integration of dust sweeping, hot pressing, and cooling, reducing manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0039] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0040] Figure 2 It is a structural schematic diagram of the components such as the placement table of the present invention;

[0041] Figure 3 This is a schematic diagram of the structure of the auxiliary operation mechanism of the present invention when viewed from above;

[0042] Figure 4 For the present invention Figure 3 Exploded view from the main viewing direction;

[0043] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle C area;

[0044] Figure 6 It is a structural schematic diagram of the linkage mechanism of the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of the opening and the fixing block of the present invention when viewed from above;

[0046] Figure 8 For the present invention Figure 6 Exploded diagram;

[0047] Figure 9 For the present invention Figure 8 Schematic diagram of the structure from the side;

[0048] Figure 10 For the present invention Figure 2 Schematic diagram of the structure of area A;

[0049] Figure 11For the present invention Figure 2 Schematic diagram of the structure of area B in the middle;

[0050] Figure 12 It is a structural schematic diagram of the direction-changing mechanism of the present invention;

[0051] Figure 13 It is a structural schematic diagram of the internal components of the first receiving groove cross section and the first limiting ratchet teeth blocking and initially engaging with the teeth of the first ratchet gear of the present invention;

[0052] Figure 14 A schematic structural diagram of the internal components of the second receiving groove cross section and the second limiting ratchet teeth blocking and preliminarily engaging the teeth of the second ratchet gear of the present invention;

[0053] Figure 15 For the present invention Figure 12 Schematic diagram of the structure of the internal components of the fixed cylinder section;

[0054] Figure 16 For the present invention Figure 12 Exploded diagram.

[0055] In the figure: 100 - hot press body; 101 - frame; 102 - placing table; 103 - lifting plate; 104 - hot pressing plate; 105 - positioning frame; 106 - finger groove; 107 - electric telescopic cylinder; 108 - guide rod; 200 - auxiliary operation mechanism; 201 - mounting frame; 202 - follower rod; 203 - mounting cavity; 204 - air outlet; 205 - protective net; 206 - dust net; 207 - rotating rod; 208 - fan blade; 209 - bracket; 210 - driving rod; 211 - worm gear; 212 - worm; 213 - motor; 214 - dust brush; 300 - linkage mechanism; 301 - fixing frame; 302 - through port; 303 - slide groove; 304 - first sliding seat; 30 5-second sliding seat; 306-fixing block; 307-first mounting rod; 308-linking rod; 309-second mounting rod; 310-auxiliary rod; 311-strip opening; 312-groove; 313-pulley; 400-direction changing mechanism; 401-first ratchet gear; 402-second ratchet gear; 403-first fixing bar; 404-first receiving groove; 405-first position-limiting ratchet tooth; 406-first elastic member; 407-second fixing bar; 408-second receiving groove; 409-second position-limiting ratchet tooth; 410-second elastic member; 500-stabilizing mechanism; 501-fixing cylinder; 502-limiting plate; 503-locking rod; 504-locking splint; 505-third elastic member. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0058] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0059] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0060] See also Figures 1-16 , which shows a schematic diagram of the structure of a resistive screen production heat pressing device embodiment of the present invention, please refer to Figures 1-16 , a detailed introduction is given to a hot pressing device for producing resistive screens.

[0061] Example 1, a hot pressing device for producing a resistive screen, including a hot pressing machine body 100, an auxiliary operation mechanism 200, a linkage mechanism 300 and a direction-changing mechanism 400:

[0062] The hot press body 100 is used to perform a hot pressing process on the resistive screen. The hot press body 100 includes a frame 101 and a placement table 102 provided on the frame 101 for placing the resistive screen, and a lifting plate 103 positioned above the placement table 102. A hot pressing plate 104 is fixedly provided at the bottom of the lifting plate 103, and an electric heating plate is provided inside the hot pressing plate 104.

[0063] The auxiliary operation mechanism 200 includes a dust-sweeping mechanism for performing a dust-sweeping process on the resistive screen before hot pressing, and a cooling mechanism for performing a cooling process on the resistive screen after hot pressing. The auxiliary operation mechanism 200 also includes a mounting frame 201 that moves in the front-to-back direction along the surface of the resistive screen. The dust-sweeping mechanism and the cooling mechanism are respectively arranged at the bottom and top of the mounting frame 201. The left and right ends of the mounting frame 201 are respectively fixed with horizontal follower rods 202.

[0064] The linkage mechanism 300 is used to synchronously drive the mounting frame 201 to move back and forth in the forward and backward directions during the lifting and lowering process of the lifting plate 103;

[0065] The direction-changing mechanism 400 includes a first ratchet gear 401 and a second ratchet gear 402 fixed on the rod of each follower rod 202, and a first limiting mechanism and a second limiting mechanism provided on the top of the placement platform 102 for controlling the rotation direction and angle of the follower rod 202.

[0066] Furthermore, a positioning frame 105 is fixedly provided on the top of the placement table 102. The positioning frame 105 is frame-shaped and is located directly below the hot pressing plate 104. The bottom shape of the hot pressing plate 104 is interlocked with the overall shape of the positioning frame 105. The inner size of the positioning frame 105 is consistent with the resistive screen. The inner sides of the positioning frame 105 are symmetrically concave with finger grooves 106 on both sides. The positioning frame 105 realizes the precise positioning of the resistive screen, and the finger grooves 106 are convenient for taking and placing.

[0067] A vertical electric telescopic cylinder 107 is fixedly provided at the center of the inner top of the placement platform 102, and the output rod of the electric telescopic cylinder 107 is fixed at the center of the top wall of the lifting plate 103;

[0068] The lifting plate 103 is rectangular, and vertical guide rods 108 are fixedly provided between the upper and lower walls of the inner cavity of the placement platform 102 near the four corners of the lifting plate 103. The rods of the four guide rods 108 slide vertically through the upper and lower walls of the four corners of the lifting plate 103 through linear bearings. The guide rods 108 ensure that the hot pressing plate 104 is accurately aligned with the positioning frame 105.

[0069] In this embodiment, the resistive screen is placed in the positioning frame 105 on the placement table 102. After the equipment is started, the electric telescopic cylinder 107 lifts the lifting plate 103, driving the hot pressing plate 104 to move up and down. The linkage mechanism 300 synchronously drives the mounting frame 201 to move. The direction-changing mechanism 400 controls the rotation of the follower rod 202, so that the dust cleaning and cooling mechanisms work according to the process requirements. The dust cleaning, hot pressing, and cooling processes are automatically connected during the hot pressing process, thereby improving production efficiency and reducing manual intervention.

[0070] Furthermore, the mounting frame 201 is in the form of a long rectangular body, and an inner cavity of the mounting frame 201 is provided with a mounting cavity 203, and the front and rear sides of the mounting cavity 203 are connected to the outside. A plurality of air outlets 204 are provided on the top of the mounting frame 201, and the plurality of air outlets 204 are arranged at equal intervals along the length direction of the mounting frame 201. A protective net 205 is fixedly provided on the inner side of each air outlet 204, and dustproof nets 206 are installed on the front and rear sides of the mounting cavity 203 by screws. The dustproof net 206 can be disassembled and cleaned regularly by screws to ensure the cleanliness of the mounting cavity 203 and extend the service life of the mechanism.

[0071] Example 2, based on Example 1, proposes a first setting mode of the cooling mechanism, wherein the cooling mechanism includes a plurality of small cooling fans fixed at equal intervals on the bottom of the inner cavity of the installation cavity 203, wherein the plurality of small cooling fans correspond one to one with the plurality of air outlets 204, and the small cooling fans are spaced apart from the protective net 205. The small cooling fans are not shown in the figure.

[0072] In this embodiment, the cooling mechanism is designed as a plurality of traditional small cooling fans arranged side by side, which can quickly cool the resistive screen after heat pressing and improve production efficiency.

[0073] Example 3, based on Example 1, proposes a second setting mode of the cooling mechanism, wherein the cooling mechanism includes a plurality of vertical rotating rods 207 rotatably arranged at the inner bottom of the mounting cavity 203 through bearings at equal intervals, and a fan blade 208 is provided at the top of each rotating rod 207. The fan blades 208 correspond to the air outlets 204 one by one, and the fan blades 208 are spaced apart from the protective net 205.

[0074] The inner bottom of the installation cavity 203 is provided with a plurality of brackets 209 along its length. A transverse driving rod 210 is rotatably provided through the side walls of the plurality of brackets 209 via a bearing sleeve. A worm gear 211 is fixedly provided on the rod body of each rotating rod 207. A worm 212 is provided on the rod body of the driving rod 210 to engage with the worm gear 211. A motor 213 is provided on one side of the driving rod 210 at the bottom of the inner wall of the installation cavity 203. The output shaft of the motor 213 is connected to the end of the driving rod 210 via a coupling.

[0075] In this embodiment, the driving rod 210 is driven to rotate by starting the motor 213, and the rotating rod 207 drives the fan blades 208 to rotate through the worm 212 and worm gear 211, and air is blown out from the air outlet 204 for cooling. In addition, the worm 212 and worm gear 211 with self-locking properties can maintain the position of the fan blades 208 after the motor 213 stops, avoiding accidental rotation and improving the stability of the mounting bracket 201 when moving.

[0076] Example 4, based on Example 1, the dust sweeping mechanism includes a dust sweeping brush 214 provided on the bottom surface of the mounting frame 201, the top of the dust sweeping brush 214 is provided with a Velcro male surface, and the bottom of the mounting frame 201 is provided with a Velcro female surface for connecting to the Velcro male surface, and the length of the dust sweeping brush 214 is greater than the length of the resistive screen;

[0077] In this embodiment, when the mounting bracket 201 moves, the dust sweeping brush 214 contacts the surface of the resistive screen to remove dust. The length of the dust sweeping brush 214 is greater than the resistive screen, ensuring that the entire surface is covered during dust sweeping and reducing dust omissions. The dust sweeping brush 214 can be quickly replaced through Velcro.

[0078] Example 5, based on Example 1, the linkage mechanism 300 includes a fixing frame 301 fixed on both sides of the top of the placement table 102, the two fixing frames 301 are arranged symmetrically about the positioning frame 105, the side view cross section of the fixing frame 301 is "L"-shaped, the top of the lifting plate 103 is opened with a through opening 302 for the fixing frame 301 to pass through, and the fixing frame 301 is opened on the side away from the positioning frame 105 with a slide groove 303, the side view cross section of the slide groove 303 is "L"-shaped and the side away from the positioning frame 105 is connected to the outside of the fixing frame 301;

[0079] The inner side of the slide groove 303 is provided with a first sliding seat 304 and a second sliding seat 305 for sliding in the vertical and front-back directions respectively. The side wall of the first sliding seat 304 is fixedly connected to the inner side wall of the through-port 302 through a fixing block 306, so that when the lifting plate 103 is lifted or lowered, the first sliding seat 304 is driven to lift or lower synchronously. The side walls of the first sliding seat 304 and the second sliding seat 305 are protruding and fixed with a first mounting rod 307. A linkage rod 308 is connected between the two first mounting rods 307. The two ends of 308 are rotatably connected to the two first mounting rods 307 via bearings, and the second mounting rods 309 are protruding and fixedly provided at the front end of the bottom of the side wall of the fixing frame 301 and the center of the side wall of the linkage rod 308. An auxiliary rod 310 is connected between the two second mounting rods 309. The two ends of the auxiliary rod 310 are rotatably connected to the two second mounting rods 309 via bearings, so that when the first sliding seat 304 is synchronously raised and lowered, the second sliding seat 305 is also driven to move forward and backward through the linkage rod 308.

[0080] A strip-shaped opening 311 is opened on one side of the fixing frame 301 close to the positioning frame 105. The shafts of the two follower rods 202 pass through the strip-shaped opening 311 and the ends thereof are rotatably connected to the side walls of the two second sliding seats 305 respectively.

[0081] Grooves 312 are respectively formed on the front and rear sides of the first sliding seat 304 and the upper and lower sides of the second sliding seat 305. The first sliding seat 304 and the second sliding seat 305 are in the shape of an "I". Pulleys 313 are rotatably arranged at equal intervals on the inner sides of the grooves 312. The outer sides of the pulleys 313 roll on the inner sides of the slide grooves 303, thereby reducing the friction between the sliding seat and the inner sides of the grooves 312.

[0082] The linkage rods 308 and the auxiliary rods 310 are staggered and located outside the fixed frame 301. When the linkage rods 308 and the auxiliary rods 310 move, they always maintain a spacing from the lifting plate 103 and the guide rods 108.

[0083] In this embodiment, when the lifting plate 103 is raised or lowered, it drives the first sliding seat 304 to move, and through the linkage rod 308 and the auxiliary rod 310, the second sliding seat 305 slides back and forth in the slide groove 303, thereby driving the mounting frame 201 to move back and forth, that is, the mounting frame 201 can be driven to move without an additional power source, and the synchronization of the movements can also be guaranteed.

[0084] Example 6, based on Example 1, when the lifting plate 103 is descending, the linkage mechanism 300 drives the mounting frame 201 to move from front to back, and the dust sweeping mechanism performs dust sweeping along the surface of the resistive screen;

[0085] When the dust sweeping mechanism completes the dust sweeping operation, that is, when the dust sweeping mechanism completely passes through the area where the positioning frame 105 is located, the lifting plate 103 is still in the descending state. Under the action of the first limiting mechanism, the following rod 202 starts to rotate counterclockwise until the lifting plate 103 is completely lowered. The following rod 202 rotates 180 degrees counterclockwise and stops, so that the cooling mechanism is facing downward.

[0086] When the lifting plate 103 is completely lowered, the hot pressing plate 104 performs hot pressing on the resistive screen. When the hot pressing of the resistive screen is completed and the lifting plate 103 gradually rises, the linkage mechanism 300 drives the mounting frame 201 to move from the back to the front, and performs a cooling operation along the surface of the resistive screen through the gap of the cooling mechanism;

[0087] When the cooling mechanism completes the cooling operation, that is, when the cooling mechanism completely passes through the area where the positioning frame 105 is located, the lifting plate 103 is still in the rising state. Under the action of the second limiting mechanism, it starts to drive the follower rod 202 to rotate clockwise until the lifting plate 103 is completely raised. The follower rod 202 rotates 180 degrees clockwise and stops, so that the dust sweeping mechanism is facing downward and the device is reset.

[0088] Furthermore, the first ratchet gear 401 and the second ratchet gear 402 are arranged side by side with a distance therebetween, and the teeth of the first ratchet gear 401 and the second ratchet gear 402 face in opposite directions;

[0089] The first limiting mechanism includes a first fixing bar 403 fixed to the top of the placement table 102 and located on the left and right sides of the rear of the positioning frame 105. The first fixing bars 403 on the left and right sides are respectively aligned with the first ratchet gears 401 on the left and right sides. First receiving grooves 404 are evenly spaced on the top of the first fixing bar 403. A first limiting ratchet tooth 405 is provided on the inner side of each first receiving groove 404 through rotation of a rotating shaft. The first limiting ratchet tooth 405 is in the shape of a right triangle. A first elastic member 406 is provided between the bottom wall of the first limiting ratchet tooth 405 and the inner bottom of the first receiving groove 404.

[0090] When the first ratchet gear 401 moves from front to back, the first elastic member 406 pushes the first position-limiting ratchet teeth 405 to block and initially engage with the teeth of the first ratchet gear 401, and the first ratchet gear 401 rolls along the top of the first position-limiting ratchet teeth 405; when the first ratchet gear 401 moves from back to front, the inclined surface of the teeth of the first ratchet gear 401 contacts the inclined surface of the first position-limiting ratchet teeth 405, pushing the first position-limiting ratchet teeth 405 into the inner side of the first receiving groove 404, and the first elastic member 406 is compressed. At this time, the first position-limiting ratchet teeth 405 will not block the movement of the first ratchet gear 401;

[0091] The second limiting mechanism includes a second fixing bar 407 fixed to the top of the placement table 102 and located on the left and right sides in front of the positioning frame 105. The second fixing bars 407 on the left and right sides are respectively aligned with the second ratchet gears 402 on the left and right sides. Second receiving grooves 408 are evenly spaced on the top of the second fixing bar 407. A second limiting ratchet tooth 409 is provided on the inner side of each second receiving groove 408 through a rotating shaft. The second limiting ratchet tooth 409 is in the shape of a right triangle. A second elastic member 410 is provided between the bottom wall of the second limiting ratchet tooth 409 and the inner bottom of the second receiving groove 408.

[0092] When the second ratchet gear 402 moves from back to front, the second elastic member 410 pushes the second position-limiting ratchet teeth 409 to block and initially engage with the teeth of the second ratchet gear 402, and the second ratchet gear 402 rolls along the top of the second position-limiting ratchet teeth 409; when the second ratchet gear 402 moves from front to back, the inclined surface of the teeth of the second ratchet gear 402 contacts the inclined surface of the second position-limiting ratchet teeth 409, pushing the second position-limiting ratchet teeth 409 into the inner side of the second receiving groove 408, and the second elastic member 410 is compressed. At this time, the second position-limiting ratchet teeth 409 will not block the movement of the second ratchet gear 402;

[0093] In this embodiment, it should be noted that the fixed bar and the plurality of position-limiting ratchet teeth mounted thereon can be considered as a "ratchet bar" as a whole, and the length of the "ratchet bar", that is, the length by which the first ratchet gear 401 and the second ratchet gear 402 can rotate, is determined based on the linear displacement when the first ratchet gear 401 and the second ratchet gear 402 rotate 180°, ensuring that the ratchet gear can complete a 180° rotation when meshing with the ratchet teeth;

[0094] When the first ratchet gear 401 and the second ratchet gear 402 move, they are blocked or released by the first limiting ratchet teeth 405 and the second limiting ratchet teeth 409 under the action of the corresponding elastic members, limiting the ratchet gears to rotate in one direction, thereby controlling the rotation direction and rotation angle of the follower rod 202.

[0095] Example 7, based on Example 1, a resistive screen production hot pressing device further includes a stabilizing mechanism 500, which is disposed on the two second sliding seats 305 and is used to "lock" the follower rod 202 when the auxiliary operation mechanism 200 performs dust sweeping and cooling operations;

[0096] The stabilizing mechanism 500 includes a fixed cylinder 501 fixed to a side of the second sliding seat 305 close to the follower rod 202. The end of the follower rod 202 away from the mounting bracket 201 is rotated and positioned inside the fixed cylinder 501. A limit plate 502 is protruded from one end of the follower rod 202 located in the inner cavity of the fixed cylinder 501. The outer diameter of the limit plate 502 is larger than that of the follower rod 202. A locking rod 503 is fixedly provided on the other side of the limit plate 502. The locking rod 503 is coaxially arranged with the follower rod 202.

[0097] The inner cavity of the fixing cylinder 501 is symmetrically provided with arc-shaped locking clamps 504 for clamping the locking rod 503. The concave sides of the two locking clamps 504 are in contact with the outer side of the locking rod 503. A third elastic member 505 is semi-encircled between the convex sides of the two locking clamps 504 and the inner side wall of the fixing cylinder 501. The concave sides of the locking clamps 504 and the outer side of the locking rod 503 are both provided with anti-slip grooves.

[0098] In this embodiment, during dust sweeping and cooling operations, the locking splint 504 clamps the locking rod 503 under the action of the third elastic member 505 to prevent the follower rod 202 from rotating; and when the limiting ratchet teeth block and initially engage with the teeth of the ratchet gear, its resistance is greater than the force of the third elastic member 505, so that the locking splint 504 is loosened and the follower rod 202 rotates normally.

[0099] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat pressing device for producing a resistive screen, comprising a heat pressing machine body (100), an auxiliary operation mechanism (200), a linkage mechanism (300) and a direction changing mechanism (400), characterized in that: The hot press body (100) is used to perform a hot pressing process on a resistive screen. The hot press body (100) comprises a frame (101), a placement table (102) arranged on the frame (101) for placing the resistive screen, and a lifting plate (103) positioned above the placement table (102) for lifting. A hot pressing plate (104) is fixedly arranged at the bottom of the lifting plate (103), and an electric heating plate is arranged on the inner side of the hot pressing plate (104); The auxiliary operation mechanism (200) includes a dust sweeping mechanism for performing a dust sweeping process on the resistive screen before hot pressing, and a cooling mechanism for performing a cooling process on the resistive screen after hot pressing. The auxiliary operation mechanism (200) also includes a mounting frame (201) that moves along the front-rear direction of the resistive screen surface. The dust sweeping mechanism and the cooling mechanism are respectively arranged at the bottom and the top of the mounting frame (201). The left and right ends of the mounting frame (201) are respectively fixed with transverse follower rods (202); The linkage mechanism (300) is used to synchronously drive the mounting frame (201) to move back and forth in the forward and backward directions during the lifting and lowering process of the lifting plate (103); The direction-changing mechanism (400) comprises a first ratchet gear (401) and a second ratchet gear (402) fixed on the rod of each follower rod (202), and a first limiting mechanism and a second limiting mechanism arranged on the top of the placement platform (102) for controlling the rotation direction and angle of the follower rod (202).

2. The resistive screen production hot pressing device according to claim 1, characterized in that: A positioning frame (105) is fixedly provided on the top of the placement table (102). The positioning frame (105) is frame-shaped and is located directly below the hot pressing plate (104). The bottom shape of the hot pressing plate (104) and the overall shape of the positioning frame (105) fit in with each other. The inner size of the positioning frame (105) is consistent with the resistive screen. Finger grooves (106) are symmetrically concave on both sides of the inner side of the positioning frame (105). A vertical electric telescopic cylinder (107) is fixedly provided at the center of the top of the inner cavity of the placement platform (102), and an output rod of the electric telescopic cylinder (107) is fixed at the center of the top wall of the lifting plate (103); The lifting plate (103) is rectangular, and vertical guide rods (108) are fixedly arranged between the upper and lower walls of the inner cavity of the placement platform (102) near the four corners of the lifting plate (103). The rod bodies of the four guide rods (108) are respectively vertically slid through the upper and lower walls of the four corners of the lifting plate (103) through linear bearings.

3. The resistive screen production hot pressing device according to claim 1, characterized in that: The mounting frame (201) is in the form of a long rectangular body. The inner cavity of the mounting frame (201) is provided with a mounting cavity (203). The front and rear sides of the mounting cavity (203) are connected to the outside. The top of the mounting frame (201) is provided with a plurality of air outlets (204). The plurality of air outlets (204) are arranged at equal intervals along the length direction of the mounting frame (201). A protective net (205) is fixedly provided on the inner side of each air outlet (204). Dustproof nets (206) are installed on the front and rear sides of the mounting cavity (203) by screws.

4. The resistive screen production hot pressing device according to claim 3, characterized in that: The cooling mechanism comprises a plurality of small cooling fans fixed at equal intervals on the bottom of the inner cavity of the installation cavity (203), the plurality of small cooling fans corresponding to the plurality of air outlets (204) one by one, and the small cooling fans are spaced apart from the protective net (205).

5. The resistive screen production heat pressing device according to claim 3, characterized in that: The cooling mechanism comprises a plurality of vertical rotating rods (207) which are rotatably arranged at equal intervals on the inner bottom of the mounting cavity (203) via bearings, and a fan blade (208) is arranged on the top of each rotating rod (207). The fan blades (208) correspond to the air outlets (204) one by one, and the fan blades (208) are spaced apart from the protective net (205); The inner bottom of the installation cavity (203) is provided with a plurality of brackets (209) along its own length direction, and the side walls of the plurality of brackets (209) are provided with a transverse driving rod (210) that is rotated through the bearing sleeve, and a worm gear (211) is fixedly provided on the rod body of each rotating rod (207), and a worm gear (212) that engages with the worm gear (211) is provided on the rod body of the driving rod (210). A motor (213) is provided on one side of the driving rod (210) at the bottom of the inner wall of the installation cavity (203), and the output shaft of the motor (213) is connected to the end of the driving rod (210) through a coupling.

6. The resistive screen production heat pressing device according to claim 1, characterized in that: The dust sweeping mechanism comprises a dust sweeping brush (214) arranged on the bottom surface of the mounting frame (201); a Velcro male surface is arranged on the top of the dust sweeping brush (214); a Velcro female surface for connecting to the Velcro male surface is arranged on the bottom of the mounting frame (201); and the length of the dust sweeping brush (214) is greater than the length of the resistive screen.

7. The resistive screen production heat pressing device according to claim 2, characterized in that: The linkage mechanism (300) includes fixed frames (301) fixed on both sides of the top of the placement table (102), the two fixed frames (301) are arranged symmetrically with respect to the positioning frame (105), the side view cross section of the fixed frames (301) is "L" shaped, the top of the lifting plate (103) is provided with a through opening (302) for the fixed frames (301) to pass through, the side of the fixed frames (301) away from the positioning frame (105) is provided with a slide groove (303), the side view cross section of the slide groove (303) is "L" shaped, and the side away from the positioning frame (105) is connected to the outside of the fixed frames (301); A first sliding seat (304) and a second sliding seat (305) are respectively provided on the inner side of the slide groove (303) for sliding in the vertical and front-back directions. The side wall of the first sliding seat (304) is fixedly connected to the inner side wall of the through-port (302) through a fixing block (306). A first mounting rod (307) is fixedly provided on the side walls of the first sliding seat (304) and the second sliding seat (305). A linkage rod (308) is connected between the two first mounting rods (307). Two ends of the linkage rod (308) are rotatably connected to the two first mounting rods (307) through bearings. A second mounting rod (309) is respectively fixedly provided on the front end of the bottom side wall of the fixed frame (301) and the center of the side wall of the linkage rod (308). An auxiliary rod (310) is connected between the two second mounting rods (309). Two ends of the auxiliary rod (310) are rotatably connected to the two second mounting rods (309) through bearings. A strip-shaped opening (311) is opened on one side of the fixing frame (301) close to the positioning frame (105); the shafts of the two follower rods (202) pass through the strip-shaped opening (311) and the ends thereof are rotatably connected to the side walls of the two second sliding seats (305) respectively; Grooves (312) are respectively provided on the front and rear sides of the first sliding seat (304) and the upper and lower sides of the second sliding seat (305). The first sliding seat (304) and the second sliding seat (305) are in the shape of an "I". Pulleys (313) are rotatably provided at equal intervals on the inner sides of the grooves (312). The outer sides of the pulleys (313) roll on the inner sides of the slide grooves (303). The linkage rod (308) and the auxiliary rod (310) are staggered and located outside the fixed frame (301). When the linkage rod (308) and the auxiliary rod (310) move, they always maintain a spacing from the lifting plate (103) and the guide rod (108).

8. The resistive screen production heat pressing device according to claim 2, characterized in that: During the descent of the lifting plate (103), the linkage mechanism (300) drives the mounting frame (201) to move from front to back, and the dust sweeping mechanism performs dust sweeping along the surface of the resistive screen; When the dust sweeping mechanism completes the dust sweeping operation, that is, when the dust sweeping mechanism completely passes through the area where the positioning frame (105) is located, the lifting plate (103) is still in a descending state, and under the action of the first limiting mechanism, the following rod (202) starts to rotate counterclockwise until the lifting plate (103) is completely lowered, and the following rod (202) rotates 180° counterclockwise and stops, so that the cooling mechanism is downward; When the lifting plate (103) is completely lowered, the hot pressing plate (104) performs a hot pressing operation on the resistance screen. When the hot pressing of the resistance screen is completed and the lifting plate (103) gradually rises, the linkage mechanism (300) drives the mounting frame (201) to move from the back to the front, and performs a cooling operation along the surface of the resistance screen through the gap of the cooling mechanism; When the cooling mechanism completes the cooling operation, that is, the cooling mechanism has completely passed through the area where the positioning frame (105) is located, the lifting plate (103) is still in the rising state, and under the action of the second limiting mechanism, it starts to drive the follower rod (202) to rotate clockwise until the lifting plate (103) is completely raised, and the follower rod (202) rotates 180° clockwise and stops, so that the dust sweeping mechanism is facing downward and the device is reset.

9. The resistive screen production heat pressing device according to claim 8, characterized in that: The first ratchet gear (401) and the second ratchet gear (402) are arranged side by side with a distance therebetween, and the teeth of the first ratchet gear (401) and the second ratchet gear (402) face in opposite directions; The first limiting mechanism comprises a first fixing bar (403) fixed on the top of the placement platform (102) and located on the left and right sides behind the positioning frame (105); the first fixing bars (403) on the left and right sides are respectively aligned with the first ratchet gears (401) on the left and right sides; first receiving grooves (404) are provided at equal intervals on the top of the first fixing bar (403); a first limiting ratchet tooth (405) is provided on the inner side of each first receiving groove (404) through rotation of a rotating shaft; the first limiting ratchet tooth (405) is in the shape of a right triangle; a first elastic member (406) is provided between the bottom wall of the first limiting ratchet tooth (405) and the inner bottom of the first receiving groove (404); When the first ratchet gear (401) moves from front to back, the first elastic member (406) pushes the first position-limiting ratchet teeth (405) to block and initially engage with the teeth of the first ratchet gear (401), and the first ratchet gear (401) rolls along the top of the first position-limiting ratchet teeth (405); when the first ratchet gear (401) moves from back to front, the inclined surface of the teeth of the first ratchet gear (401) contacts the inclined surface of the first position-limiting ratchet teeth (405), pushing the first position-limiting ratchet teeth (405) into the inner side of the first receiving groove (404), and the first elastic member (406) is compressed. At this time, the first position-limiting ratchet teeth (405) will not block the movement of the first ratchet gear (401); The second limiting mechanism includes a second fixing bar (407) fixed on the top of the placement table (102) and located on the left and right sides in front of the positioning frame (105), the second fixing bars (407) on the left and right sides are respectively aligned with the second ratchet gears (402) on the left and right sides, and second receiving grooves (408) are provided at equal intervals on the top of the second fixing bar (407). A second limiting ratchet tooth (409) is provided on the inner side of each second receiving groove (408) through rotation of a rotating shaft, and the second limiting ratchet tooth (409) is in the shape of a right triangle. A second elastic member (410) is provided between the bottom wall of the second limiting ratchet tooth (409) and the inner bottom of the second receiving groove (408); When the second ratchet gear (402) moves from back to front, the second elastic member (410) pushes the second limiting ratchet teeth (409) to block and initially engage with the teeth of the second ratchet gear (402), and the second ratchet gear (402) rolls along the top of the second limiting ratchet teeth (409); when the second ratchet gear (402) moves from front to back, the inclined surface of the teeth of the second ratchet gear (402) contacts the inclined surface of the second limiting ratchet teeth (409), pushing the second limiting ratchet teeth (409) into the inner side of the second receiving groove (408), and the second elastic member (410) is compressed. At this time, the second limiting ratchet teeth (409) will not block the movement of the second ratchet gear (402).

10. The resistive screen production heat pressing device according to claim 7, characterized in that: It also includes a stabilizing mechanism (500), which is arranged on the two second sliding seats (305) and is used to "lock" the follower rod (202) when the auxiliary operation mechanism (200) performs dust sweeping and cooling operations; The stabilizing mechanism (500) comprises a fixed cylinder (501) fixed to a side of the second sliding seat (305) close to the follower rod (202); one end of the follower rod (202) away from the mounting frame (201) is rotated and located inside the fixed cylinder (501); and a limiting plate (502) is protruded from one end of the follower rod (202) located in the inner cavity of the fixed cylinder (501); the outer diameter of the limiting plate (502) is larger than the outer diameter of the follower rod (202); a locking rod (503) is fixedly provided on the other side of the limiting plate (502); and the locking rod (503) is coaxially arranged with the follower rod (202); The inner cavity of the fixing cylinder (501) is symmetrically provided with arc-shaped locking clamps (504) for clamping the locking rod (503), the concave sides of the two locking clamps (504) are in contact with the outer side of the locking rod (503), and a third elastic member (505) is semi-encircled between the convex sides of the two locking clamps (504) and the inner side wall of the fixing cylinder (501), and the concave sides of the locking clamps (504) and the outer side of the locking rod (503) are both provided with anti-slip grooves.

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