A mold for reducing the thermal energy consumption in hot bending

Abstract

The present invention discloses a mold for reducing heat energy consumption during hot bending. The mold comprises: a mold body and a mold support arranged below the mold body; the mold body comprises: a middle mold and U-shaped end molds symmetrically arranged at both ends of the middle mold, the middle mold and the two end molds enclosing a downwardly concave curved frame structure, and the two ends of the middle mold are connected to the corresponding end molds by hinges; the mold support comprises: a middle frame arranged below the middle mold, the middle frame and the middle mold are connected by multiple first connecting rods, and a U-shaped end frame is further arranged below the end mold, and the end frame and the corresponding end mold are connected by multiple second connecting rods; the front and rear positions of the two ends of the middle frame are connected to the corresponding end frame by a limit adjustment mechanism, and the front and rear positions of the bottom side of the end frame are respectively provided with a lower open support foot corresponding to the frame rod in the furnace. The mold for reducing heat energy consumption during hot bending overcomes the shortcomings of the existing technology, reduces the heat energy loss of the hot bending furnace, and improves the production efficiency of the hot bending furnace.

Description

Technical Field

[0001] The invention relates to a molding die for automobile windshields, and in particular to a die capable of reducing thermal energy consumption during hot bending. Background Art

[0002] Glass bending molds play a crucial role in the glass bending process. They are broadly categorized into three types: solid molds, strip-frame molds, and hollow molds. The strip-frame mold is the most commonly used type in glass bending factories. It's relatively simple to manufacture and requires minimal bending skill.

[0003] During the hot bending process of glass, the force is concentrated from both sides to the middle, and the flat glass gradually bends. When the force exceeds the allowable stress of the glass, the glass plate will explode. Therefore, external force is required to assist in the glass bending process.

[0004] In the prior art, for example, patent publication number CN205011625U discloses a glass bending mold with heat-reflective asbestos. The middle of the mold is fixed, and the two ends are swung by the action of a counterweight. When flat glass is placed on the mold, the two ends of the mold are pressed down to achieve a flat placement of the glass. As the bending process progresses, the pressure exerted on the mold by the two ends of the glass decreases, and the two ends of the glass are pushed upward by the action of the counterweight to achieve support.

[0005] The above structure requires a base structure for fixing the middle part of the mold on the one hand, and a counterweight hammer on the other hand. The counterweight hammer and the base structure will absorb a large amount of heat energy from the hot bending furnace, resulting in large heat energy loss, thereby reducing the production efficiency of the hot bending furnace. Summary of the Invention

[0006] The purpose of the present invention is to provide a mold for reducing the thermal energy consumption of hot bending, which overcomes the shortcomings of the existing technology, reduces the thermal energy loss of the hot bending furnace and improves the production efficiency of the hot bending furnace.

[0007] In order to achieve the above-mentioned objectives, the present invention provides a mold for reducing thermal energy consumption of hot bending, the mold comprising: a mold body and a mold support arranged below the mold body; wherein, the mold body comprises: a middle mold and U-shaped end molds symmetrically arranged at both ends of the middle mold, the middle mold and the two end molds enclose a downwardly concave curved frame structure, and the two ends of the middle mold are connected to the corresponding end molds by hinges; the mold support comprises: a middle frame arranged below the middle mold, the middle frame and the middle mold are connected by multiple first connecting rods, and a U-shaped end frame is also arranged below the end mold, and the end frame and the corresponding end mold are connected by multiple second connecting rods; the front and rear positions of the two ends of the middle frame are connected to the corresponding end frames by a limit adjustment mechanism, and the front and rear positions of the bottom side of the end frame are respectively provided with a lower opening support foot corresponding to the frame rod in the furnace.

[0008] Preferably, the limit adjustment mechanism includes: an articulated seat, a connecting block, a limit screw, a limit sleeve and a nut. The articulated seat is fixed to the end frame, and the limit sleeve is fixed to the middle frame. One end of the connecting block is installed in the articulated seat so as to be rotatable up and down, and the other end of the connecting block is connected to the limit screw. The limit screw passes through the limit sleeve and is then covered with the nut.

[0009] Preferably, a rotation groove is formed in the hinge seat, a pin shaft is provided through the hinge seat, a rotation hole corresponding to the pin shaft is provided on the connecting block, and the connecting block is sleeved on the pin shaft through the rotation hole and rotates in the rotation groove.

[0010] Preferably, the middle mold includes two arc-shaped molds arranged in front and back, and an inverted V-shaped avoidance opening is formed on the bottom side of the hinge position of the end mold and the corresponding arc-shaped mold.

[0011] Preferably, a first connecting piece is provided on the outer side of the end of the arc-shaped mold, and a second connecting piece is provided on the inner side of the end mold. The first connecting piece and the second connecting piece are connected by a movable shaft, and the movable shaft is located in the V-shaped avoidance opening.

[0012] Preferably, the first connecting rod and the second connecting rod are glass fit adjustment screws with adjustable lengths.

[0013] According to the above technical solution, the mold in the present invention does not need to be provided with a base structure for fixing the middle part of the mold body while being able to provide good support for the glass. On the other hand, no counterweight is required. Therefore, there is no counterweight and base structure to absorb a large amount of heat energy from the heat bending furnace, which reduces heat energy loss and thus increases the production efficiency of the heat bending furnace.

[0014] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the mold of the present invention;

[0017] Figure 2 It is a structural diagram of a preferred embodiment of the limit adjustment mechanism;

[0018] Figure 3 It is a structural schematic diagram of a preferred embodiment of the hinged portion between the middle mold and the end mold.

[0019] Description of Reference Numerals

[0020] 1 middle mold 2 end molds

[0021] 3 hinges 4 limit adjustment mechanism

[0022] 5 lower opening legs 6 furnace rack

[0023] 7 arc mold 8 first connecting rod

[0024] 9 middle racks and 10 end racks

[0025] 11 second connecting rod 31 first connecting piece

[0026] 32 second connecting piece 33 movable shaft

[0027] 41 pin 42 hinge seat

[0028] 43 connecting block 44 limiting screw

[0029] 45 limit sleeve 46 nut DETAILED DESCRIPTION

[0030] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0031] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom, far, near, side" contained in the terms merely represent the directions of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0032] See also Figure 1-3The mold for reducing heat energy consumption of hot bending shown in the figure comprises: a mold body and a mold support arranged below the mold body; wherein, the mold body comprises: a middle mold 1 and U-shaped end molds 2 symmetrically arranged at both ends of the middle mold 1, the middle mold 1 and the two end molds 2 enclose a downwardly concave curved frame structure, and the two ends of the middle mold 1 are connected to the corresponding end molds 2 by hinges 3; the mold support comprises: a middle frame 9 arranged below the middle mold 1, the middle frame 9 is connected to the middle mold 1 by multiple first connecting rods 8, and a U-shaped end frame 10 is also arranged below the end mold 2, and the end frame 10 is connected to the corresponding end mold 2 by multiple second connecting rods 11; the front and rear positions of the two ends of the middle frame 9 are connected to the corresponding end frames 10 by a limit adjustment mechanism 4, and the front and rear positions of the bottom side of the end frame 10 are respectively provided with a lower opening support foot 5 corresponding to the frame rod 6 in the furnace.

[0033] By implementing the above technical solution, the mold can provide good support for the glass without the need for a base structure for fixing the middle portion of the mold body, and on the other hand, without the need for a counterweight. Therefore, there is no counterweight or base structure to absorb a large amount of heat energy from the hot bending furnace, which reduces heat energy loss and thus increases the production efficiency of the hot bending furnace. In other words, without the counterweight and base structure of the prior art, the mold can still provide support for the glass, while also reducing heat energy loss and improving production efficiency.

[0034] Specifically, before hot bending, the two ends of the flat glass are placed on two end molds 2. Under the action of the gravity of the flat glass, the end mold 2 rotates around the furnace frame rod 6 set in the furnace. The outer end of the end mold 2 swings downward at a certain angle and then approaches the flat glass to achieve the most stable support state. As the hot bending process is implemented, the force center of the glass moves toward the center. At this time, the force of the two ends of the glass squeezing the outer ends of the end mold 2 continues to decrease. Then, the outer end of the end mold 2 is pressed down and swung downward by the gravity of the middle mold 1 and the middle frame 9. The swing is still centered on the furnace frame rod 6 until the outer end of the end mold 2 swings to the required position and is positioned under the limiting action of the limit adjustment mechanism 4. At this time, the upper surface of the end mold 2 and the middle mold 1 is a downward curved surface as a whole, which is strongly matched with the windshield to be hot bent.

[0035] In this embodiment, the limit adjustment mechanism 4 can limit the swing position of the end mold 2. In order to further provide a limit adjustment mechanism 4, preferably, the limit adjustment mechanism 4 includes: an articulated seat 42, a connecting block 43, a limit screw 44, a limit sleeve 45 and a nut 46. The articulated seat 42 is fixed to the end frame 10, and the limit sleeve 45 is fixed to the middle frame 9. One end of the connecting block 43 can be installed in the articulated seat 42 so as to be rotated up and down. The other end of the connecting block 43 is connected to the limit screw 44. The limit screw 44 passes through the limit sleeve 45 and is then covered with the nut 46. When the end mold 2 swings upward to a certain position, the nut 46 is blocked by the limit sleeve 45, so that the limit screw 44 can no longer slide in the limit sleeve 45, thereby limiting the end mold 2 from continuing to swing, and effectively controlling the glass forming effect. Since the limit screw 44 needs to slide in the limit sleeve 45 and also has a certain up and down swing amplitude, the sliding hole in the limit sleeve 45 should be set as a vertical strip structure to facilitate the movement of the limit screw 44. Of course, the thread of the limit screw 44 can be set to only one section, specifically at the end away from the hinge seat 42, which can facilitate the installation of the nut 46.

[0036] In this embodiment, in order to further improve the activity effect of the limiting screw 44, preferably, a rotating groove is formed in the hinge seat 42, a pin shaft 41 is provided through the hinge seat 42, and a rotating hole corresponding to the pin shaft 41 is provided on the connecting block 43. The connecting block 43 is sleeved on the pin shaft 41 through the rotating hole and rotates in the rotating groove.

[0037] In this embodiment, the middle mold 1 preferably includes two curved molds 7 disposed front and rear, and an inverted V-shaped clearance is formed at the bottom of the hinged portion between the end molds 2 and the corresponding curved molds 7. The curved molds 7 are vertical sheet-like structures, and the end molds 2 are also vertical sheet-like structures. The inverted V-shaped clearance is provided at the hinged portion between the end molds 2 and the curved molds 7 to prevent collision when the curved molds 7 and the end molds 2 rotate relative to each other, thereby providing a larger range of motion.

[0038] In this embodiment, in order to further provide a hinge 3 structure, preferably, a first connecting piece 31 is provided on the outer side of the end of the arc-shaped mold 7, and a second connecting piece 32 is provided on the inner side of the end mold 2. The first connecting piece 31 and the second connecting piece 32 are connected by a movable shaft 33, and the movable shaft 33 is located in the V-shaped avoidance opening. The movable shaft 33 is perpendicular to the first connecting piece 31 and the second connecting piece 32, and the movable shaft 33 can rotate around its own axis. A rotation groove or a rotation hole for accommodating the rotation of the movable shaft 33 is provided on the first connecting piece 31 and the second connecting piece 32 to cooperate with the rotation of the movable shaft 33. Of course, in order to prevent the movable shaft 33 from falling off, an annular limiting groove is provided in the rotation groove or the rotation hole, and an annular limiting rib matching the limiting groove is provided on the movable shaft 33.

[0039] In this embodiment, to enable manual adjustment of the fit between the mold body and the glass, the first connecting rod 8 and the second connecting rod 11 are preferably length-adjustable glass fit adjustment screws. The glass fit adjustment screws can be used to adjust the curvature of the mold body. Of course, if necessary, the upper and lower ends of the glass fit adjustment screws can be hingedly connected to corresponding locations. The glass fit adjustment screw, a rod structure whose overall length can be adjusted by rotating the adjustment nut 46, is conventional and will not be further described here.

[0040] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0042] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A mold for reducing heat energy consumption of hot bending, characterized in that: The mold comprises: a mold body and a mold support arranged below the mold body; wherein, The mold body comprises: a middle mold (1) and U-shaped end molds (2) symmetrically arranged at both ends of the middle mold (1); the middle mold (1) and the two end molds (2) enclose a downwardly concave curved frame structure; the two ends of the middle mold (1) are connected to the corresponding end molds (2) via hinges (3); The mold support comprises: a middle frame (9) arranged below the middle mold (1), the middle frame (9) and the middle mold (1) are connected via a plurality of first connecting rods (8), and a U-shaped end frame (10) is further arranged below the end mold (2), the end frame (10) and the corresponding end mold (2) are connected via a plurality of second connecting rods (11); The front and rear positions of both ends of the middle frame (9) are connected to the corresponding end frames (10) via a limit adjustment mechanism (4), and the front and rear positions of the bottom side of the end frame (10) are respectively provided with a lower open support foot (5) corresponding to the frame rod (6) in the furnace; The limit adjustment mechanism (4) includes: an articulated seat (42), a connecting block (43), a limit screw (44), a limit sleeve (45) and a nut (46), wherein the articulated seat (42) is fixed to the end frame (10), the limit sleeve (45) is fixed to the middle frame (9), one end of the connecting block (43) is installed in the articulated seat (42) so as to be able to rotate up and down, the other end of the connecting block (43) is connected to the limit screw (44), and the limit screw (44) passes through the limit sleeve (45) and is then covered with the nut (46); The first connecting rod (8) and the second connecting rod (11) are glass fit adjustment screws with adjustable lengths.

2. A mold for reducing heat energy consumption of hot bending according to claim 1, characterized in that: A rotation groove is formed in the hinge seat (42), a pin shaft (41) is provided through the hinge seat (42), a rotation hole corresponding to the pin shaft (41) is provided on the connecting block (43), and the connecting block (43) is sleeved on the pin shaft (41) through the rotation hole and rotates in the rotation groove.

3. A mold for reducing heat energy consumption of hot bending according to any one of claims 1 or 2, characterized in that: The middle mold (1) comprises two arc-shaped molds (7) arranged front and back, and an inverted V-shaped avoidance opening is formed on the bottom side of the hinged position between the end mold (2) and the corresponding arc-shaped mold (7).

4. A mold for reducing heat energy consumption during hot bending according to claim 3, characterized in that: A first connecting piece (31) is provided on the outer side of the end of the arc-shaped mold (7), and a second connecting piece (32) is provided on the inner side of the end mold (2). The first connecting piece (31) and the second connecting piece (32) are connected via a movable shaft (33), and the movable shaft (33) is located in the V-shaped avoidance opening.

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