Automatic feeding and discharging device for laminating furnace and implementation method thereof

Abstract

This invention relates to an automatic feeding and discharging device for laminating furnaces, specifically a device and its implementation method for laminating furnaces used in laminated glass production. The device comprises an upper frame, a lower frame, and a light rail mounted on the upper frame. A scissor-type support is hinged to the upper and lower frames at its upper and lower ends respectively. A fixed seat is mounted on the connecting beam on the other side of the scissor-type support. The drive shaft of a lifting motor extends to both ends and passes through the ends of the scissor-type support. The lower frame has guide rail grooves formed by channel steel structures on both sides. A track wheel is mounted on the outside of the scissor-type support, and the track wheel mates with the guide rail groove. A gear is mounted on the inside of the scissor-type support. A rack is mounted on the crossbeam of the lower frame to mate with the gear. A chain meshes with a double-row sprocket and also mates with a chain guide rail. This device improves the automation level of the laminating furnace feeding and discharging process, thereby increasing the efficiency of laminated glass production.

Description

Technical Field

[0001] This invention relates to the field of laminated glass production technology, and in particular to an automatic feeding and discharging device for a laminating furnace used in laminated glass production and its implementation method. Background Technology

[0002] Laminated glass is a composite glass product made of two or more sheets of glass with one or more layers of organic polymer interlayer sandwiched between them. It undergoes a special high-temperature pre-pressing (or vacuuming) and high-temperature, high-pressure process to permanently bond the glass and interlayer together. Currently, laminated glass is mainly manufactured using autoclaves and laminating furnaces, both of which use high-temperature heating and vacuuming to melt the interlayer and bond two or more sheets of glass together. The resulting laminated glass has many advantages, including high strength, water resistance, and explosion-proof safety. Techniques such as laminating with silk, wire, decorative paper, colored films, and transparent films can be used to produce impact-resistant and vandal-resistant safety laminated glass and single-layer tempered sliding door glass.

[0003] Currently, in the production of laminated glass using laminating furnaces, existing material handling lifting platforms are typically fixed at one end of the furnace. Glass panels need to be placed on a glass tray on the lifting platform, and the tray is manually pushed into the furnace. Conversely, after the glass is processed, the tray is manually removed from the furnace and pushed back. However, this method not only increases the labor intensity of workers but is also inefficient. Furthermore, the lifting platform uses hydraulic cylinders for lifting, and because hydraulic cylinders have a certain inertia, it is difficult to guarantee the accuracy of the lifting height, often requiring manual adjustment. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic feeding and discharging device for laminating furnaces and its implementation method, so as to assist in the feeding and discharging of laminated glass trays into and out of laminating furnaces and improve the automation and production efficiency of laminated glass production.

[0005] The present invention provides an automatic feeding and discharging device for a laminating furnace, characterized in that it includes a bearing mechanism, a lifting mechanism, a conveying mechanism, a pushing mechanism, and a limiting mechanism, wherein...

[0006] The load-bearing mechanism includes an upper frame, a lower frame, and a light rail installed on top of the upper frame;

[0007] The lifting mechanism includes a scissor bracket, a lifting motor, a fixed seat, a rack, a gear, and a track wheel. One side of the scissor bracket is hinged to the upper frame and the lower frame at its upper and lower ends, respectively. The fixed seat is mounted on the connecting beam on the other side of the scissor bracket. The lifting motor is mounted on the fixed seat. The transmission shaft of the lifting motor extends to both ends and passes through the ends of the scissor bracket. The lower frame has guide rail grooves formed by channel steel structures on both sides. The drive shaft is mounted on the outer side of the scissor bracket, and the track wheel cooperates with the guide rail groove. The drive shaft is mounted on the inner side of the scissor bracket, and a rack that cooperates with it is set on the crossbeam of the lower frame.

[0008] The conveying mechanism includes a conveying motor, double-row sprockets, connecting seats, chain guide rails, a chain, push rods, bearings, cylinder supports, corner cylinders, and push plates. Connecting seats are provided on the front and rear sides of the upper frame. The conveying motor is installed on the side of one connecting seat. A chain guide rail is provided between the two connecting seats. Double-row sprockets are provided above the connecting seats. Push plates are installed on the chain. Cylinder supports are installed on the push plates. Corner cylinders are located on the cylinder supports. Bearings are installed on the push plates. Push rods pass through the bearings and connect to the corner cylinders. The chain meshes with the double-row sprockets and cooperates with the chain guide rails.

[0009] The propulsion mechanism includes a cylinder support, a propulsion cylinder, a cylinder connecting seat, and a linear guide rail. The cylinder support is mounted on the upper frame crossbeam, the propulsion cylinder is connected to the cylinder support, the cylinder connecting seat is mounted on the chain guide rail and connected to the extended end of the propulsion cylinder, and the linear guide rail is mounted on the upper frame longitudinal beam and connected to the chain guide rail through the slider of the linear guide rail.

[0010] The limiting mechanism includes a sensing disk fixed to the inside of the track wheel and a plurality of proximity switches arranged at intervals on the lower frame of the track wheel. When the upper frame track is flush with one of the tray tracks in the laminating furnace, the sensing disk and one of the proximity switches remain in the triggered state.

[0011] Furthermore, feet are provided on the sides of the lower frame.

[0012] Furthermore, the push rod of the aforementioned conveying mechanism is L-shaped. In the initial state, the narrow end of the L-shaped push rod remains vertically upward and contacts the inner side of the end slot of the glass tray. When the corner cylinder is in operation, the narrow end of the L-shaped push rod engages with the end slot of the glass tray.

[0013] The method for implementing the automatic feeding and discharging device for a laminating furnace provided by the present invention is characterized by comprising the following steps:

[0014] Step a: Initial bit setting;

[0015] The glass tray is placed on the light rail of the upper frame and does not contact the chain guide rail; the narrow end of the L-shaped push rod of the conveying mechanism is kept in the initial vertical upward state, and the L-shaped push rod is kept in contact with the inner side of the end slot of the glass tray; select the required layer height in the laminating furnace on the control screen of the laminating furnace, and the PLC of the laminating furnace equipment controls the opening of the laminating furnace door to prepare for feeding.

[0016] Step b: Adjust the glass tray feeding height;

[0017] The lifting mechanism drives the scissor bracket to rise. After the proximity switch corresponding to the selected floor height detects the sensing disc of the limit mechanism, the proximity switch is activated and sends a feedback signal to the PLC of the laminating furnace equipment. The lifting motor stops rotating and self-locks. At this time, the upper frame light rail is flush with the tray guide rail of the selected floor height inside the laminating furnace.

[0018] Step c: A partial advance during the feeding process of the laminating furnace;

[0019] The conveyor motor of the conveyor mechanism drives the double-row sprockets to rotate, the double-row sprockets drive the chain to move forward, and the push rod moves forward along the chain guide rail and acts on the glass tray to partially push it into the laminating furnace.

[0020] Step d: The second full advancement of the laminating furnace process;

[0021] When the conveying mechanism moves to the end of the chain guide, the push cylinder extends and applies a thrust to the chain guide through the cylinder connecting seat, causing it to move forward on the linear guide connected to it, and acting on the glass tray to push it into the laminating furnace a second time; after the glass tray has completely entered the laminating furnace, the push cylinder retracts, and the conveying mechanism returns to the end of the chain along the linear guide, waiting outside the laminating furnace door;

[0022] Step e: Discharge from the laminating furnace;

[0023] After the laminated glass in the laminating furnace is processed, the furnace door is opened under the control of the PLC of the laminating furnace equipment. The push cylinder of the pushing mechanism extends, driving the conveying mechanism forward along the linear guide rail until the push rod reaches the glass tray slot. The corner cylinder is activated and drives the push rod to rotate 180°. The narrow end of the L-shaped push rod engages with the end slot of the glass tray. The push cylinder retracts, and the conveying mechanism pulls the glass tray in the laminating furnace back along the linear guide rail to the end of the chain. The conveying motor reverses, and the conveying mechanism pulls the glass tray back to the initial position.

[0024] The automatic loading and unloading device and its implementation method for laminating furnaces provided by this invention solve the problem of laborious manual loading and unloading of laminating furnaces, and realize an auxiliary function in the loading and unloading of laminated glass trays in and out of the laminating furnace. Through the cooperation of the lifting mechanism and the limiting mechanism of this device, the glass tray can be raised to a height corresponding to the required working layer height in the laminating furnace, so as to cooperate with the tray track in the laminating furnace for loading. Through the cooperation of the conveying mechanism and the pushing mechanism of this device, a partial push and a full push are performed in the laminating furnace, which can push the glass tray along the chain guide into the laminating furnace. Conversely, after the laminated glass is processed in the laminating furnace, this device can pull the glass tray back to the initial working position. In summary, this invention has the positive effect of improving the automation level of the loading and unloading process of laminating furnaces, thereby improving the efficiency of laminated glass production. Attached Figure Description

[0025] The accompanying drawings disclose specific embodiments of the present invention, wherein,

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 3 For the present invention Figure 1 Enlarged view of a portion of point G in the middle;

[0029] Figure 4 This is a top view of the present invention;

[0030] Figure 5 This is a sectional view along line AA of the present invention;

[0031] Figure 6 This is a BB-direction sectional view of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged view of a portion of point F in the middle;

[0033] Figure 8 This is a schematic diagram of the conveying mechanism of the present invention performing a partial push of the glass tray into the laminating furnace.

[0034] Figure 9 For the present invention Figure 8 Enlarged view of a portion of point I in the middle;

[0035] Figure 10 For the present invention Figure 8 Enlarged view of a portion of point D;

[0036] Figure 11 This is a schematic diagram of the state in which the auxiliary conveying mechanism of the propulsion mechanism of the present invention acts on the glass tray to perform a second full propulsion into the laminating furnace;

[0037] Figure 12 For the present invention Figure 11 Enlarged view of a portion of H in the middle;

[0038] Figure 13 This is a schematic diagram illustrating the application of the present invention in the glass tray unloading state of a laminating furnace;

[0039] Figure 14 For the present invention Figure 13 Enlarged view of a portion of point E in the middle;

[0040] Figure 15 This is a schematic diagram of the structure of the push rod of the conveying mechanism and the end slot of the glass tray during the glass tray pushing process of the present invention;

[0041] Figure 16 This is a schematic diagram of the structure of the push rod of the conveying mechanism and the end slot of the glass tray during the glass tray pull-back process of the present invention. Detailed Implementation

[0042] like Figure 1-16 As shown, the automatic feeding and discharging device for the laminating furnace provided by the present invention is mainly composed of a bearing mechanism, a lifting mechanism, a conveying mechanism, a pushing mechanism and a limiting mechanism.

[0043] The supporting structure consists of an upper frame 1, a lower frame 2, and a light rail 3 installed on top of the upper frame. In a specific embodiment, the light rail can be a light rail with a capacity of 8 kg / m as specified in GB11264-2012.

[0044] The lifting mechanism consists of a scissor-type support 4, a lifting motor 5, a fixed seat 6, a rack 7, a gear 8, and a track wheel 9. Specifically: one side of the scissor-type support is hinged to the upper and lower frames at its upper and lower ends, respectively. A fixed seat is mounted on the connecting beam on the other side of the scissor-type support. The lifting motor is mounted on the fixed seat. The drive shaft 10 of the lifting motor extends to both ends and passes through the ends of the scissor-type support. The lower frame has guide rail grooves 11 formed by channel steel structures on both sides. Track wheels are mounted on the outside of the drive shaft of the scissor-type support, and the track wheels cooperate with the guide rail grooves. Gears are mounted on the inside of the drive shaft of the scissor-type support. A rack that cooperates with the gears is set on the crossbeam of the lower frame.

[0045] The conveying mechanism consists of a conveying motor 12, a double-row sprocket 13, a connecting seat 14, a chain guide rail 15, a chain 16, a push rod 17, a bearing 18, a cylinder support 19, a corner cylinder 20, and a push plate 21. Preferably, the chain is an accessory chain, and the bearing is a box-type linear bearing. Specifically: connecting seats are provided on the front and rear sides of the upper frame, the conveying motor is mounted on the side of one connecting seat, a chain guide rail is provided between the two connecting seats, a double-row sprocket is provided above the connecting seats, the push plate is mounted on the accessory chain, the cylinder support is mounted on the push plate, the corner cylinder is set on the cylinder support, a box-type linear bearing is provided on the push plate, and the push rod passes through the box-type linear bearing and connects to the corner cylinder; the chain meshes with the double-row sprocket, and the chain cooperates with the chain guide rail. The push rod is L-shaped. In its initial state, the narrow end of the L-shaped push rod is vertically upward and contacts the inner side of the groove 30 at the end of the glass tray to achieve the pushing effect of the push rod on the glass tray. When the corner cylinder is in operation, the narrow end of the L-shaped push rod engages with the groove at the end of the glass tray to achieve the pulling effect of the push rod on the glass tray.

[0046] The propulsion mechanism consists of a cylinder support 22, a propulsion cylinder 23, a cylinder connecting seat 24, and a linear guide rail 25. Specifically: the cylinder support is mounted on the upper frame crossbeam, the propulsion cylinder is connected to the cylinder support, the cylinder connecting seat is set on the chain guide rail and connected to the extended end of the propulsion cylinder, and the linear guide rail is set on the upper frame longitudinal beam and connected to the chain guide rail through the slider of the linear guide rail.

[0047] The limiting mechanism consists of a sensing disc 26 fixed to the inside of the track wheel and a plurality of proximity switches 27 spaced apart on the lower frame of the track wheel. When the upper frame track is flush with one of the tray tracks inside the laminating furnace 28, the sensing disc and one of the proximity switches remain in a triggered state.

[0048] In addition, to improve the stability of the device, feet 29 are provided on the side of the lower frame, and the height and balance can be adjusted by thread adjustment.

[0049] like Figures 8-16 As shown, the present invention also provides a method for implementing an automatic feeding and discharging device based on a laminating furnace, which mainly includes the following steps:

[0050] Step a: Initial bit setting;

[0051] The glass tray is placed on the light rail of the upper frame and does not contact the chain guide rail; the narrow end of the L-shaped push rod of the conveying mechanism is kept in the initial vertical upward state, and the L-shaped push rod is kept in contact with the inner side of the end slot of the glass tray; select the required layer height in the laminating furnace on the control screen of the laminating furnace, and the PLC of the laminating furnace equipment controls the opening of the laminating furnace door to prepare for feeding.

[0052] Step b: Adjust the glass tray feeding height;

[0053] The lifting mechanism drives the scissor bracket to rise. After the proximity switch corresponding to the selected floor height detects the sensing disc of the limit mechanism, the proximity switch is activated and sends a feedback signal to the PLC of the laminating furnace equipment. The lifting motor stops rotating and self-locks. At this time, the upper frame light rail is flush with the tray guide rail of the selected floor height inside the laminating furnace.

[0054] Step c: A partial advance during the feeding process of the laminating furnace;

[0055] The conveyor motor of the conveyor mechanism drives the double-row sprockets to rotate, the double-row sprockets drive the chain to move forward, and the push rod moves forward along the chain guide rail and acts on the glass tray to partially push it into the laminating furnace.

[0056] Step d: The second full advancement of the laminating furnace process;

[0057] When the conveying mechanism moves to the end of the chain guide, the push cylinder extends and applies a thrust to the chain guide through the cylinder connecting seat, causing it to move forward on the linear guide connected to it, and acting on the glass tray to push it into the laminating furnace a second time; after the glass tray has completely entered the laminating furnace, the push cylinder retracts, and the conveying mechanism returns to the end of the chain along the linear guide, waiting outside the laminating furnace door;

[0058] Step e: Discharge from the laminating furnace;

[0059] After the laminated glass in the laminating furnace is processed, the furnace door is opened under the control of the PLC of the laminating furnace equipment. The push cylinder of the pushing mechanism extends, driving the conveying mechanism forward along the linear guide rail until the push rod reaches the glass tray slot. The corner cylinder is activated and drives the push rod to rotate 180°. The narrow end of the L-shaped push rod engages with the end slot of the glass tray. The push cylinder retracts, and the conveying mechanism pulls the glass tray in the laminating furnace back along the linear guide rail to the end of the chain. The conveying motor reverses, and the conveying mechanism pulls the glass tray back to the initial position.

Claims

1. A method for implementing an automatic feeding and discharging device for a laminating furnace, comprising an automatic feeding and discharging device for a laminating furnace, characterized in that, The device includes a carrying mechanism, a lifting mechanism, a conveying mechanism, a propulsion mechanism and a limiting mechanism, wherein the carrying mechanism includes an upper frame (1), a lower frame (2) and a light rail (3) installed above the upper frame. The lifting mechanism includes a scissor bracket (4), a lifting motor (5), a fixed seat (6), a rack (7), a gear (8), and a track wheel (9). One side of the scissor bracket is hinged to the upper frame and the lower frame at its upper and lower ends, respectively. A fixed seat is mounted on the connecting beam on the other side of the scissor bracket. The lifting motor is mounted on the fixed seat. The drive shaft (10) of the lifting motor extends to both ends and passes through the ends of the scissor bracket. The lower frame has guide rail grooves (11) formed by channel steel structure on both sides. The drive shaft is mounted on the outside of the scissor bracket, and the track wheel cooperates with the guide rail groove. The drive shaft is mounted on the inside of the scissor bracket, and a rack that cooperates with it is set on the crossbeam of the lower frame. The conveying mechanism includes a conveying motor (12), a double-row sprocket (13), a connecting seat (14), a chain guide rail (15), a chain (16), a push rod (17), a bearing (18), a first cylinder support (19), a corner cylinder (20), and a push plate (21). Connecting seats are provided on the front and rear sides of the upper frame. The conveying motor is installed on the side of the connecting seat on one side. A chain guide rail is provided between the two connecting seats. A double-row sprocket is provided above the connecting seats. The push plate is installed on the chain. The first cylinder support is installed on the push plate. The corner cylinder is set on the first cylinder support. The bearing is installed on the push plate. The push rod passes through the bearing and connects to the corner cylinder. The chain meshes with the double-row sprocket and cooperates with the chain guide rail. The propulsion mechanism includes a second cylinder support (22), a propulsion cylinder (23), a cylinder connecting seat (24), and a linear guide rail (25). The second cylinder support is mounted on the upper frame crossbeam, the propulsion cylinder is connected to the second cylinder support, the cylinder connecting seat is mounted on the chain guide rail and connected to the extended end of the propulsion cylinder, and the linear guide rail is mounted on the upper frame longitudinal beam and connected to the chain guide rail through the slider of the linear guide rail. The limiting mechanism includes an induction disc (26) fixed to the inside of the track wheel and a plurality of proximity switches (27) spaced apart on the lower frame of the track wheel. When the upper frame track is flush with one of the tray tracks in the laminating furnace (28), the induction disc and one of the proximity switches remain in the triggered state. The method includes the following steps: Step a: Initial bit setting; The glass tray is placed on the light rail of the upper frame and does not contact the chain guide rail; the narrow end of the L-shaped push rod of the conveying mechanism is kept in the initial vertical upward state, and the L-shaped push rod is kept in contact with the inner side of the end slot of the glass tray; select the required layer height in the laminating furnace on the control screen of the laminating furnace, and the PLC of the laminating furnace equipment controls the opening of the laminating furnace door to prepare for feeding. Step b: Adjust the glass tray feeding height; The lifting mechanism drives the scissor bracket to rise. After the proximity switch corresponding to the selected floor height detects the sensing disc of the limit mechanism, the proximity switch is activated and sends a feedback signal to the PLC of the laminating furnace equipment. The lifting motor stops rotating and self-locks. At this time, the upper frame light rail is flush with the tray guide rail of the selected floor height inside the laminating furnace. Step c: A partial advance during the feeding process of the laminating furnace; The conveyor motor of the conveyor mechanism drives the double-row sprockets to rotate, the double-row sprockets drive the chain to move forward, and the push rod moves forward along the chain guide rail and acts on the glass tray to partially push it into the laminating furnace. Step d: The second full advancement of the laminating furnace process; When the conveying mechanism moves to the end of the chain guide, the push cylinder extends and applies a thrust to the chain guide through the cylinder connecting seat, causing it to move forward on the linear guide connected to it, and acting on the glass tray to push it into the laminating furnace a second time; after the glass tray has completely entered the laminating furnace, the push cylinder retracts, and the conveying mechanism returns to the end of the chain along the linear guide, waiting outside the laminating furnace door; Step e: Discharge from the laminating furnace; After the laminated glass in the laminating furnace is processed, the furnace door is opened under the control of the PLC of the laminating furnace equipment. The push cylinder of the pushing mechanism extends, driving the conveying mechanism forward along the linear guide rail until the push rod reaches the glass tray slot. The corner cylinder is activated and drives the push rod to rotate 180°. The narrow end of the L-shaped push rod engages with the end slot of the glass tray. The push cylinder retracts, and the conveying mechanism pulls the glass tray in the laminating furnace back along the linear guide rail to the end of the chain. The conveying motor reverses, and the conveying mechanism pulls the glass tray back to the initial position.

2. The method for implementing the automatic feeding and discharging device for the laminating furnace according to claim 1, characterized in that: The lower frame has feet (29) on its side.

3. The method for implementing the automatic feeding and discharging device for the laminating furnace according to claim 1, characterized in that: The push rod of the above-mentioned conveying mechanism is L-shaped. In the initial state, the narrow end of the L-shaped push rod is kept vertically upward and in contact with the inner side of the end slot (30) of the glass tray. When the push rod is in the state of the corner cylinder, the narrow end of the L-shaped push rod is engaged with the end slot of the glass tray.

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