Multi-positioning device for laminating household appliance glass panel

Abstract

The invention discloses a multi-positioning device for laminating a household appliance glass panel, which relates to the technical field of household appliance production, and comprises a workbench and a rack fixed on the top of the workbench, and further comprises a positioning die holder mounted on the surface of the workbench, and a laminating plate positioned in the rack, a pneumatic lifting mechanism connected with the top face of the pressing plate is installed at the top of the rack, a uniform pressure base plate and a positioning uniform pressure assembly are installed at the bottom of the pressing plate and elastically installed in the workbench, the top of the pressing plate penetrates through the positioning die holder, and the two sides of the bottom face of the uniform pressure base plate are elastically connected with anti-disengaging rods connected with the top of the positioning uniform pressure assembly in a clamped mode. A counterweight assembly is movably installed in the workbench, and inserting frames are symmetrically and fixedly connected to the bottom of the pressing plate. According to the invention, the elastically connected positioning uniform pressure assembly is clamped with the anti-drop rod at the bottom of the pressing plate, so that secondary dynamic positioning and constraint of the pressing plate and the glass panel are realized in the pressing process.

Description

Technical Field

[0001] This invention relates to the field of home appliance manufacturing technology, specifically to a multi-positioning device for pressing glass panels in home appliances. Background Technology

[0002] In the home appliance manufacturing industry, especially in the process of bonding glass panels to the substrate, there are extremely high requirements for the positioning accuracy, pressure uniformity and operational stability of the bonding process. Existing glass panel bonding equipment usually adopts a simple mold positioning combined with a vertical pressure head structure.

[0003] The existing patent application has the publication number CN217752893U and the publication date is November 8, 2022. The patent is entitled "A Glass Cover Plate Pressing Machine". The patent includes a shell, and the shell contains an equipment chamber, a vacuum pressing chamber and a storage chamber arranged from top to bottom. A cylinder and a vacuum pump are arranged in the equipment chamber. The cylinder is located in the middle of the bottom of the equipment chamber and the telescopic end of the cylinder passes through the bottom of the equipment chamber. An upper pressing block and a lower support block are arranged in the vacuum pressing chamber. The top of the upper pressing block is fixedly connected to the telescopic end of the cylinder. The lower support block is fixedly arranged at the bottom of the vacuum pressing chamber and located directly below the upper pressing block. A heating component is detachably connected to the bottom of the upper pressing block, and a limiting plate is detachably connected to the top of the lower support block. A sealed space can be formed between the heating component and the limiting plate. The sealed space limits the glass cover plate from multiple circumferential sides, preventing the glass cover plate from shifting during bonding and affecting the overall effect of vacuum bonding. In addition, the press machine heats the curved parts of the display screen evenly, making it less likely to generate bubbles, improving the working efficiency and application range of the press machine, and significantly reducing the product rework rate.

[0004] The aforementioned application has shortcomings. Conventional equipment relies heavily on the cavity of a single mold for positioning glass panels. In the initial stage of pressing down, the panel may experience slight displacement or warping due to uneven pressure, resulting in inaccurate pressing position and affecting product yield. Secondly, the pressure applied by the traditional pressing mechanism is directly transmitted through the rigid pressing head, making it difficult to ensure uniform pressure distribution across the entire glass panel contact surface. Especially for large-sized or irregularly shaped panels, the actual pressure may differ between the edge and center areas, easily causing localized stress concentration and even leading to micro-cracks or damage to the glass panel. In particular, when the pressing point deviates from the center, there is a slight risk of torsion, which may exacerbate the wear of guide pillars and bearings in the long term. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-positioning device for pressing glass panels of household appliances, so as to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A multi-positioning device for laminating glass panels for household appliances includes a worktable and a frame fixed to the top of the worktable. It also includes a positioning mold base mounted on the worktable surface, a laminating plate located inside the frame, a pneumatic lifting mechanism connected to the top surface of the laminating plate mounted on the top of the frame, a pressure equalizing pad mounted on the bottom of the laminating plate, and a positioning and pressure equalizing component elastically mounted inside the worktable with its top penetrating the positioning mold base. Anti-detachment rods, which engage with the top of the positioning and pressure equalizing component, are elastically connected to both sides of the bottom surface of the pressure equalizing pad. A counterweight component is movably mounted inside the worktable. Insertion frames are symmetrically fixed to the bottom of the laminating plate, penetrating the positioning mold and the worktable and engaging with the counterweight component. When the pressure equalizing pad descends, causing the anti-detachment rods on both sides to engage with the positioning and pressure equalizing component, the insertion frames press against the counterweight component, forcing the counterweight component to directly act on the positioning and pressure equalizing component.

[0008] Preferably, a fixed baffle and a movable baffle are installed on the top of the positioning mold base, and clamping adjustment blocks are installed on both the fixed baffle and the movable baffle. A pneumatic push rod is installed between the positioning mold base and the movable baffle.

[0009] Preferably, the pneumatic lifting mechanism includes a pneumatic rod fixed to the top of the frame and multiple guide rods fixed to the top surface of the pressing plate. The head of the pneumatic rod is fixed to the center of the pressing plate, and multiple bushings are vertically provided on the top of the frame for the guide rods to pass through.

[0010] Preferably, the positioning and pressure equalization assembly includes a support frame located below the worktable, with a pair of uprights installed on both sides of the top of the support frame, and a sleeve matching the uprights vertically fixedly connected to the positioning mold base. The top of each pair of uprights is fixedly connected to the same snap-fit ​​rod, and a return spring is sleeved on the upright, with the return spring located between the sleeve and the snap-fit ​​rod.

[0011] Preferably, the pressure equalizing pad is provided with through grooves that are adapted to the adjustment direction of each clamping adjustment block, and the width of the through grooves is equal to the width of the clamping adjustment block.

[0012] Preferably, a pair of sliders matching the through groove are fixedly connected to the top of the anti-detachment rod, a reinforcing block is fixedly connected inside the through groove, and a top spring is installed between the reinforcing block and the slider.

[0013] Preferably, the counterweight assembly includes a counterweight plate located below the workbench, the counterweight plate having symmetrically formed guide grooves, and a traction frame elastically slidably connected to both sides of the bottom of the workbench, with a vertically slidable insert rod penetrating the guide groove installed inside the traction frame.

[0014] Preferably, the bottom of the inner wall of the plug-in frame is provided with an abutting groove, and both the positioning mold base and the worktable are provided with positioning holes for the plug-in frame to pass through. A wedge-shaped abutting block that contacts the abutting groove is fixedly connected to the traction frame.

[0015] Preferably, a push-unlocking bracket is slidably installed at the bottom of the locking rod, and wedge-shaped guide blocks that abut against one end of the push-unlocking bracket are symmetrically fixed to the inner wall of the frame.

[0016] Preferably, the inner wall of the through groove is provided with a receiving groove and a piston hole that are interconnected on both sides. A pressure block is movably embedded in the receiving groove, and a piston rod that is inserted into the piston hole is fixedly connected to both sides of the slider.

[0017] In the above technical solution, by setting up a positioning and equalizing pressure component with elastic connection and interlocking with the anti-detachment rod at the bottom of the pressing plate, secondary dynamic positioning and constraint of the pressing plate and glass panel are realized during the pressing process. This effectively suppresses the displacement tendency of the pressing plate and the equalizing pressure pad under pressure. At the same time, the design of the equalizing pressure pad promotes uniform pressure distribution. Before pressing, the counterweight component is pressed down by the insertion frame, so that it directly transmits the force to the positioning and equalizing pressure component. At this time, the edge of the equalizing pressure pad far from the center of the pressing point can also apply further pressure to the edge of the panel under the action of the counterweight, ensuring the pressing quality of the panel edge.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0019] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of a multi-positioning device for pressing glass panels of household appliances according to the present invention;

[0022] Figure 2 This is a schematic diagram of the positioning and equalizing component and the counterweight component in a multi-positioning device for pressing glass panels of household appliances according to the present invention;

[0023] Figure 3 This is a schematic diagram showing the connection of the pull frame and counterweight assembly in a multi-positioning device for pressing glass panels of household appliances according to the present invention.

[0024] Figure 4 This is a schematic diagram of the overall structure of the positioning mold base in a multi-positioning device for pressing glass panels of household appliances according to the present invention;

[0025] Figure 5 This is a schematic diagram of the pressing plate and the pressure equalizing pad in a multi-positioning device for pressing glass panels of household appliances according to the present invention;

[0026] Figure 6 This is a schematic diagram of the anti-detachment rod in a multi-positioning device for pressing glass panels of household appliances according to the present invention;

[0027] Figure 7 This is a schematic diagram showing the connection between the pressure equalizing pad and the anti-detachment rod in a multi-positioning device for pressing glass panels of household appliances according to the present invention.

[0028] Figure 8 This is a schematic diagram of the pressure equalization pad of a multi-positioning device for pressing glass panels of household appliances according to the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Workbench; 101. Pulling frame; 102. Insert rod; 103. Wedge-shaped abutment; 2. Frame; 201. Bushing; 202. Wedge-shaped guide block; 3. Positioning mold base; 301. Fixed baffle; 302. Movable baffle; 303. Pneumatic push rod; 304. Sleeve; 305. Positioning hole; 4. Pressing plate; 401. Insertion frame; 402. Abutment groove; 5. Pressure equalizing pad; 501. Through groove; 502. Reinforcing block; 503. Receiving groove; 504. Piston hole; 505. Pressure block; 6. Positioning and pressure equalizing assembly; 601. Support frame; 602. Vertical rod; 603. Snap-fit ​​rod; 604. Return spring; 605. Push-unlock frame; 7. Anti-detachment rod; 701. Slider; 702. Top spring; 703. Piston rod; 8. Counterweight assembly; 801. Counterweight plate; 802. Guide groove; 9. Pneumatic lifting mechanism; 901. Pneumatic rod; 902. Guide rod; 10. Clamping adjustment block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0032] Please see Figure 1-8This invention provides a multi-positioning device for pressing glass panels for home appliances, comprising a worktable 1 and a frame 2 fixed to the top of the worktable 1, a positioning mold base 3 installed on the worktable 1, a pressing plate 4 located inside the frame 2, a pneumatic lifting mechanism 9 connected to the top surface of the pressing plate 4 installed on the top of the frame 2, a pressure equalizing pad 5 installed at the bottom of the pressing plate 4, a positioning and pressure equalizing component 6 elastically installed inside the worktable 1 with its top penetrating the positioning mold base 3, anti-detachment rods 7 elastically connected to both sides of the bottom surface of the pressure equalizing pad 5 and engaging with the top of the positioning and pressure equalizing component 6, a counterweight component 8 movably installed inside the worktable 1, and a plug-in frame 401 symmetrically fixedly connected to the bottom of the pressing plate 4, the plug-in frame 401 penetrating the positioning mold and the worktable 1 and engaging with the counterweight component 8. When the pressure equalizing pad 5 descends and the anti-detachment rods 7 on both sides engage with the positioning and pressure equalizing component 6, the plug-in frame 401 presses against the counterweight component 8, forcing the counterweight component 8 to act directly on the positioning and pressure equalizing component 6.

[0033] Specifically, the workbench 1 is a rigid base, and the frame 2 is fixed to the top of the workbench 1 with bolts to form a support structure. The positioning mold base 3 is installed in the center area of ​​the workbench 1 to support the glass panel to be pressed. The pressing plate 4 is located inside the frame 2 and is vertically raised and lowered by the pneumatic lifting mechanism 9. The pressure equalizing pad 5 promotes uniform pressure distribution. During operation, the glass panel is first placed on the positioning mold base 3, and the pneumatic lifting mechanism 9 is started to make the pressing plate 4 slowly descend. Then, the anti-dislodgement rod 7 at the bottom of the pressure equalizing pad 5 engages with the positioning and pressure equalizing component 6. At the same time, the plug-in bracket 401 is inserted into the workbench 1 and presses down the counterweight component 8. The counterweight component 8 moves under the thrust of the connector 401, allowing it to sit directly on the positioning and equalizing component 6, thereby increasing the pressure on the panel edge. The anti-detachment rods 7 on both sides of the equalizing pad 5 engage with the positioning and equalizing component 6 under elastic action. This engagement forms a rigid constraint, preventing the pressing plate 4 and the equalizing pad 5 from shifting horizontally or tilting under the pressing force, achieving secondary dynamic positioning and improving pressing accuracy. The positioning and equalizing component 6 transmits the force to the edge area of ​​the equalizing pad 5, thereby compensating for the pressure attenuation at the pressing center. This ensures that the panel edge is fully pressed under the additional pressure of the counterweight component 8, ensuring consistent overall pressing quality.

[0034] Compared with the prior art, the embodiments of the present invention, by setting the positioning and equalizing pressure component 6 with the anti-detachment rod 7 at the bottom of the pressing plate 4 to be interlocked, realize the secondary dynamic positioning and constraint of the pressing plate 4 and the glass panel during the pressing process, effectively suppressing the displacement tendency of the pressing plate 4 and the equalizing pressure pad 5 under pressure. At the same time, the design of the equalizing pressure pad 5 promotes the uniform distribution of pressure. Before pressing, the counterweight component 8 is pressed down by the insert bracket 401, so that it directly transmits the force to the positioning and equalizing pressure component 6. At this time, the edge of the equalizing pressure pad 5, which is far away from the center of the pressing point, can also apply further pressure to the edge of the panel under the action of the counterweight, ensuring the pressing quality of the panel edge.

[0035] In a further embodiment of the present invention, a fixed baffle 301 and a movable baffle 302 are installed on the top of the positioning mold base 3. A clamping adjustment block 10 is installed on both the fixed baffle 301 and the movable baffle 302. A pneumatic push rod 303 is installed between the positioning mold base 3 and the movable baffle 302. The cylinder of the pneumatic push rod 303 is fixed to the positioning mold base 3, and the piston rod 703 is connected to the movable baffle 302. A clamping adjustment block 10 is installed on both the fixed baffle 301 and the movable baffle 302. The clamping adjustment block 10 adopts an adjustable bolt structure for... To accommodate glass panels of different sizes, the pneumatic push rod 303 pushes the movable baffle 302 to move, cooperating with the fixed baffle 301 to clamp and position the panel. Before placing the glass panel, the pneumatic push rod 303 retracts, driving the movable baffle 302 away from the fixed baffle 301, leaving enough space for the panel to be placed. After the panel is placed, the pneumatic push rod 303 extends, pushing the movable baffle 302 towards the fixed baffle 301 until the clamping adjustment blocks 10 on both sides gently contact and clamp the edge of the panel. The adjustability of the clamping adjustment blocks 10 ensures that the clamping force is applied evenly, avoiding stress concentration or damage caused by point contact.

[0036] In a further embodiment of the present invention, the pneumatic lifting mechanism 9 includes a pneumatic rod 901 fixed to the top of the frame 2 and a plurality of guide rods 902 fixed to the top surface of the pressing plate 4. The head of the pneumatic rod 901 is fixed to the center of the pressing plate 4. The pressing plate 4 is pushed up and down by adjusting the air pressure in the pneumatic rod 901. A plurality of bushings 201 are vertically provided on the top of the frame 2 for the guide rods 902 to pass through. The guide rods 902 pass through the bushings 201 to form a sliding fit. The guide rods 902 ensure that the pressing plate 4 moves vertically and avoids tilting. The pneumatic rod 901 provides the main pressing force and drives the pressing plate 4 to rise and fall. The guide rods 902 slide in the bushings 201 to play a guiding and stabilizing role, preventing the pressing plate 4 from shifting or rotating under pressure, ensuring the vertical accuracy of the pressing process, and reducing the lateral stress on the panel.

[0037] In a further embodiment of the present invention, the positioning and pressure equalization assembly 6 includes a support frame 601 located below the workbench 1. A pair of uprights 602 are installed on both sides of the top of the support frame 601. A sleeve 304 matching the uprights 602 is vertically fixedly connected to the positioning mold base 3. A single locking rod 603 is fixedly connected to the top of each pair of uprights 602. A return spring 604 is sleeved on the upright 602, located between the sleeve 304 and the locking rod 603. During the descent of the pressing plate 4, the anti-disengagement rod 7 of the pressure equalization pad 5 can engage with the locking rod 603, allowing the downward pressure to pass through the locking rod. The connecting rod 603 transmits the energy to the upright rod 602, compressing the return spring 604. The return spring 604 absorbs the impact and promotes dynamic positioning. At the same time, the locking rods 603 on both sides can further limit the offset of the pressure equalizing pad 5, achieving multiple positioning. During the pressing process, the elasticity of the return spring 604 causes the positioning and pressure equalizing component 6 to make fine adjustments with the pressure change, maintaining uniform constraint on the panel. After pressing, the return spring 604 pushes the upright rod 602 to reset. The return spring 604 can also effectively absorb the impact energy in the initial stage of pressing, making the pressing process more stable and gentle, and protecting the glass panel from damage by instantaneous impact force.

[0038] In a further embodiment of the present invention, the pressure equalizing pad 5 is provided with through grooves 501 adapted to the adjustment direction of each clamping adjustment block 10. The width of the through grooves 501 is equal to the width of the clamping adjustment block 10. The design of the through grooves 501 ensures that the clamping adjustment block 10 will not interfere with the pressure equalizing pad 5 during the adjustment process. At the same time, when the pressing plate 4 descends to perform the pressing operation, the clamping adjustment block 10 can pass smoothly through the through grooves 501 without affecting the pressing process. This design ensures both the flexibility of clamping adjustment and the stability of the pressing operation. In addition, the width of the through grooves 501 is equal to the width of the clamping adjustment block 10, which also allows the pressure equalizing pad 5 to better fit the glass panel during the pressing process, further improving the pressing quality.

[0039] In a further embodiment of the present invention, a pair of sliders 701 that match the through groove 501 are fixedly connected to the top of the anti-detachment rod 7. A reinforcing block 502 is fixedly connected inside the through groove 501. A top spring 702 is installed between the reinforcing block 502 and the sliders 701. The top spring 702 plays an elastic buffering role during the pressing process. When the anti-detachment rod 7 descends with the pressing plate 4, if it contacts the locking rod 603, the locking rod 603 will apply a reverse force to it, causing the slider 701 to slide in the through groove 501. The top spring 702 is compressed, absorbing part of the pressing force and reducing the damage to the glass panel from rigid impact. At the same time, after the anti-detachment rod 7 moves to avoid the locking rod 603, the locking with the positioning and equalizing pressure component 6 is more tight and reliable under the action of the top spring 702, ensuring the stability of the secondary dynamic positioning, enhancing the connection strength between the equalizing pressure plate 5 and the anti-detachment rod 7, and ensuring the firmness of the position of the equalizing pressure plate 5, thus improving the durability and reliability of the entire device.

[0040] In a further embodiment of the present invention, the counterweight assembly 8 includes a counterweight plate 801 located below the workbench 1. The counterweight plate 801 has symmetrically formed guide grooves 802. A pull frame 101 is elastically slidably connected to both sides of the bottom of the workbench 1. An insert rod 102, penetrating the guide groove 802, is vertically slidably installed within the pull frame 101. The guide groove 802 has a horizontal section and an inclined section. Under the elastic force of the pull frame 101, the insert rod 102 is located in the horizontal section of the guide groove 802. When the insert frame 401 pushes against the pull frame 101, the pull frame 101, carrying the insert rod 102, gradually moves to the inclined section of the guide groove 802, causing the counterweight plate 801 to fall directly onto the positioning and equalizing assembly 6. On the support frame 601, the counterweight plate 801 can be moved smoothly and accurately onto the positioning and equalizing pressure component 6 under the pushing of the insertion frame 401, providing additional pressure to the edge of the equalizing pressure pad 5. The weight and position of the counterweight plate 801 are precisely calculated to ensure that sufficient pressure can be applied to the edge of the panel during the pressing process without affecting the overall pressing balance. After the pressing is completed, the pull frame 101 is reset under the action of elasticity, and the insertion rod 102 also returns to the horizontal section of the guide groove 802. The counterweight plate 801 is lifted to prepare for the next pressing operation. This design of the counterweight component 8 not only improves the pressing quality but also enhances the stability and durability of the device.

[0041] In a further embodiment of the present invention, an abutment groove 402 is provided at the bottom of the inner wall of the plug-in frame 401. Positioning holes 305 for the plug-in frame 401 to pass through are provided on both the positioning mold base 3 and the worktable 1. A wedge-shaped abutment block 103 is fixedly connected to the pull frame 101, contacting the abutment groove 402. When the plug-in frame 401 descends and inserts into the positioning hole 305, the abutment groove 402 and the wedge-shaped abutment block 103 come into contact. As the plug-in frame 401 continues to descend, the inclined surface of the abutment groove 402 pushes the wedge-shaped abutment block 103, causing the pull frame 101 to move inward against the elastic force, thereby driving the plug rod 102 to slide within the guide groove 802. When the plug-in frame 401 descends to a certain position, the plug rod 102 slides from the horizontal section of the guide groove 802 into the inclined section, matching... Under the influence of gravity, the counterweight plate 801 falls directly onto the support frame 601 of the positioning and equalizing pressure assembly 6, providing additional pressure to the edge of the equalizing pressure pad 5. This allows the insertion frame 401 to precisely control the movement of the counterweight plate 801 during descent, ensuring that the counterweight plate 801 provides pressure to the edge of the panel at the appropriate time, further improving the pressing quality. After pressing is completed, the insertion frame 401 rises, the contact between the abutting groove 402 and the wedge-shaped abutment 103 gradually disengages, the pulling frame 101 resets under the action of elasticity, the insertion rod 102 returns to the horizontal section of the guide groove 802, and the counterweight plate 801 is lifted, preparing for the next pressing operation. This not only improves the automation level of the device but also reduces manual operation, lowers labor intensity, and improves production efficiency.

[0042] In a further embodiment of the present invention, a push-unlocking bracket 605 is slidably installed at the bottom of the locking rod 603. A wedge-shaped guide block 202, which abuts against one end of the push-unlocking bracket 605, is symmetrically fixed to the inner wall of the frame 2. During the pressing process, when it is necessary to release the locking state between the anti-detachment rod 7 and the locking rod 603, as the pressing plate 4 rises, the push-unlocking bracket 605 slides under the action of the wedge-shaped guide block 202. During the sliding process, the push-unlocking bracket 605 pushes the anti-detachment rod 7 inward, separating it from the locking rod 603, thus achieving automatic unlocking. This push-unlocking design allows the device to quickly and accurately release the positioning constraint after pressing, improving the ease of operation and work efficiency of the device. It also reduces manual intervention, lowering the risk of equipment damage or pressing quality problems caused by improper manual operation, further enhancing the performance and reliability of the entire multi-positioning device for pressing household appliance glass panels.

[0043] In a further embodiment of the present invention, the inner walls of the through groove 501 are provided with interconnected receiving grooves 503 and piston holes 504. A pressure block 505 is movably embedded in the receiving groove 503. Piston rods 703, inserted into the piston holes 504, are fixedly connected to both sides of the slider 701. When the pressure equalizing pad 5 is pressed, each clamping adjustment block 10 entering the through groove 501 pushes the pressure block 505 into its respective receiving groove 503. By squeezing the air in the receiving groove 503 into the piston hole 504, the movement of the piston rod 703 is restricted, preventing the anti-detachment rod 7 from shifting back and loosening the positioning and pressure equalizing assembly 6, further enhancing the connection between the anti-detachment rod 7 and the positioning and pressure equalizing assembly 6. For connection stability, even under significant pressure during the pressing process, the anti-detachment rod 7 will not easily move back, thus ensuring the accuracy and reliability of the secondary dynamic positioning. At the same time, the movement of the pressure block 505 within the receiving groove 503 and the air flow between the receiving groove 503 and the piston hole 504 form a buffer mechanism that can absorb some of the impact force generated during the pressing process, reduce damage to the glass panel, and improve the pressing quality. After the pressing is completed, as the pressing plate 4 rises, the clamping adjustment block 10 leaves the through groove 501, the pressure block 505 is released, and the piston rod 703 resumes free movement, preparing for the next pressing operation.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-positioning device for pressing glass panels for household appliances, comprising a worktable (1) and a frame (2) fixed to the top of the worktable (1), characterized in that, Also includes: Positioning mold base (3), which is installed on the table surface of workbench (1); A pressing plate (4) is located inside the frame (2). A pneumatic lifting mechanism (9) connected to the top surface of the pressing plate (4) is installed on the top of the frame (2). A pressure equalizing pad (5) is installed on the bottom of the pressing plate (4). The positioning and equalizing component (6) is elastically installed in the workbench (1) and its top passes through the positioning mold base (3). The bottom sides of the equalizing pad (5) are elastically connected with anti-detachment rods (7) that are engaged with the top of the positioning and equalizing component (6). The counterweight component (8) is movably installed in the workbench (1). The bottom of the pressing plate (4) is symmetrically fixed with a plug-in frame (401). The plug-in frame (401) passes through the positioning mold (3) and the workbench (1) and abuts against the counterweight component (8). When the pressure equalizing pad (5) descends and the anti-detachment rods (7) on both sides engage with the positioning pressure equalizing component (6), the plug-in frame (401) presses against the counterweight component (8), forcing the counterweight component (8) to act directly on the positioning pressure equalizing component (6).

2. The multi-positioning device for pressing glass panels of household appliances according to claim 1, characterized in that, The positioning mold base (3) is equipped with a fixed baffle (301) and a movable baffle (302) on its top. Both the fixed baffle (301) and the movable baffle (302) are equipped with clamping adjustment blocks (10). A pneumatic push rod (303) is installed between the positioning mold base (3) and the movable baffle (302).

3. The multi-positioning device for pressing glass panels of household appliances according to claim 1, characterized in that, The pneumatic lifting mechanism (9) includes a pneumatic rod (901) fixed to the top of the frame (2) and a plurality of guide rods (902) fixed to the top surface of the pressing plate (4). The rod head of the pneumatic rod (901) is fixed to the center of the pressing plate (4). A plurality of bushings (201) are vertically provided on the top of the frame (2) for the guide rods (902) to pass through.

4. The multi-positioning device for pressing glass panels of household appliances according to claim 1, characterized in that, The positioning and pressure equalization assembly (6) includes a support frame (601) located below the workbench (1). A pair of uprights (602) are installed on both sides of the top of the support frame (601). A sleeve (304) matching the uprights (602) is vertically fixedly connected to the positioning mold base (3). The same snap-fit ​​rod (603) is fixedly connected to the top of each pair of uprights (602). A return spring (604) is sleeved on the upright (602). The return spring (604) is located between the sleeve (304) and the snap-fit ​​rod (603).

5. A multi-positioning device for pressing glass panels of household appliances according to claim 2, characterized in that, The pressure equalizing pad (5) is provided with through grooves (501) that are adapted to the adjustment direction of each clamping adjustment block (10), and the width of the through groove (501) is equal to the width of the clamping adjustment block (10).

6. The multi-positioning device for pressing glass panels of household appliances according to claim 5, characterized in that, The top of the anti-detachment rod (7) is fixedly connected to a pair of sliders (701) that match the through groove (501). A reinforcing block (502) is fixedly connected inside the through groove (501). A top spring (702) is installed between the reinforcing block (502) and the slider (701).

7. The multi-positioning device for pressing glass panels of household appliances according to claim 1, characterized in that, The counterweight assembly (8) includes a counterweight plate (801) located below the workbench (1). The counterweight plate (801) is symmetrically provided with guide grooves (802). Both sides of the bottom of the workbench (1) are elastically slidably connected with a traction frame (101). A rod (102) that passes through the guide groove (802) is vertically slidably installed in the traction frame (101).

8. A multi-positioning device for pressing glass panels of household appliances according to claim 7, characterized in that, The bottom of the inner wall of the plug-in frame (401) is provided with an abutting groove (402). The positioning mold base (3) and the worktable (1) are both provided with positioning holes (305) for the plug-in frame (401) to pass through. The pull frame (101) is fixedly connected with a wedge-shaped abutting block (103) that contacts the abutting groove (402).

9. A multi-positioning device for pressing glass panels of household appliances according to claim 4, characterized in that, The bottom of the locking rod (603) is slidably installed with a push-unlocking frame (605), and the inner wall of the frame (2) is symmetrically fixed with a wedge-shaped guide block (202) that abuts against one end of the push-unlocking frame (605).

10. A multi-positioning device for pressing glass panels for household appliances according to claim 6, characterized in that, The inner wall of the through groove (501) is provided with a receiving groove (503) and a piston hole (504) that are interconnected. A pressure block (505) is movably embedded in the receiving groove (503). The slider (701) is fixedly connected to a piston rod (703) that is inserted into the piston hole (504) on both sides.

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