Flexible shaft arc changing unit capable of being adjusted in multi-stage mode, arc forming device and adjusting method

Abstract

The invention relates to a multi-stage adjustable flexible shaft arc changing unit, an arc forming device and an adjusting method.The multi-stage adjustable flexible shaft arc changing unit comprises flexible shaft roller ways, flexible shaft height adjusting mechanisms and a supporting assembly, and the multiple flexible shaft roller ways are arranged on the same supporting assembly through the multiple flexible shaft height adjusting mechanisms; the flexible shaft height adjusting mechanisms are arranged in the length direction of the flexible shaft roller bed at intervals, the movable ends of the flexible shaft height adjusting mechanisms are connected with the flexible shaft roller bed, the supporting assembly comprises a left swing arm and a right swing arm, the inner side ends of the left swing arm and the right swing arm are hinged to the middle support, and the outer side ends of the left swing arm and the right swing arm can swing up and down around the middle support under the action of external force. At least two flexible shaft arc-changing units capable of being adjusted in a multi-stage manner are arranged in the glass gradual arc-changing device; according to the adjusting method, firstly, the left swing arm and the right swing arm are swung, and then the flexible shaft height adjusting mechanism is used for controlling secondary accurate arc forming of the flexible shaft roller way. The arc changing requirements of large-radius and small-radius glass forming can be met, and the stability of the overall structure is kept.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass bending and toughening, and particularly relates to a soft shaft variable arc unit with multi-stage adjustment, a glass gradual arc forming device and an adjustment method. Background Art

[0002] In the field of producing bent tempered glass, during the forming of bent glass, during the conveying process of the glass after it exits the heating furnace, it is desired to achieve rapid forming. For the traditional arc forming mechanism described in a variable curvature conveying roller path (publication number CN210029220U), the soft shaft roller path controls the fitting of different gradual radii for each soft shaft by adjusting the lifting heights of multiple lead screws differently. For the same gradual section composed of multiple variable curvature conveying roller paths, when the target radius of the glass is small, the gradual radii of multiple soft shaft roller paths gradually decrease. The higher the lifting height required for the lead screws on both sides of the soft shaft roller path with a smaller gradual radius, the longer the required stroke, i.e., the length, of the lead screw. In order to ensure that the lead screw has sufficient bending resistance, the usual practice is to increase the size specification of the lead screw lifting mechanism. Otherwise, its structure is unstable, that is, the length of the lead screw needs to be increased, and correspondingly, the diameter of the lead screw needs to be increased to improve the bending resistance. However, the high-performance lead screw adjustment mechanism that meets the requirements has a high cost and is uneconomical, and the lead screw occupies a large installation space. Moreover, the excessive height of the lead screw rising in the arc forming mechanism also affects the stability of the overall structure. Summary of the Invention

[0003] The purpose of the present invention is to provide a soft shaft variable arc unit with multi-stage adjustment, a glass gradual arc forming device and an adjustment method, which can accommodate the variable arc requirements for forming large-radius and small-radius glass without changing the length and diameter of the lead screw, and maintain the stability of the overall structure.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a soft shaft variable arc unit with multi-stage adjustment, including a soft shaft roller path, a soft shaft height adjustment mechanism and a support assembly. There are several soft shaft roller paths, and several soft shaft roller paths are all arranged on the same support assembly through a plurality of soft shaft height adjustment mechanisms. The soft shaft height adjustment mechanisms are arranged at intervals along the length direction of the soft shaft roller path. The movable end of the soft shaft height adjustment mechanism is connected to the soft shaft roller path. The support assembly includes a left swing arm and a right swing arm. The inner ends of the left swing arm and the right swing arm are respectively hinged on the middle support. The outer ends of the left swing arm and the right swing arm can swing up and down around the middle support under the action of an external force.

[0005] The beneficial effects are as follows: Before the flexible shaft height adjustment mechanism adjusts the flexible shaft roller path, for the multi-stage adjustable flexible shaft arc-changing unit with a small target arc radius, first, the corresponding left swing arm and right swing arm are swung by an external force to change the initial positions of the flexible shaft height adjustment mechanism and the end of the flexible shaft roller path. Subsequently, the flexible shaft height adjustment mechanism performs secondary precise arc adjustment on the flexible shaft roller path so that the flexible shaft roller path forms an arc with a smaller radius. Under the condition of the same arc radius, the stroke of the movable end of the flexible shaft height adjustment mechanism can be reduced, thereby improving the stability of the entire device. For the multi-stage adjustable flexible shaft arc-changing unit with a large target arc radius, since the stroke required by the movable end of the flexible shaft height adjustment mechanism is shorter, it is not necessary to pre-adjust the left swing arm and the right swing arm. It is possible to flexibly select whether to swing the swing arm in the multi-stage adjustable flexible shaft arc-changing unit and the different swinging heights according to the size of the target radius of the glass, and combine the adjustment of the flexible shaft height adjustment mechanism to form different target arc radii to shape the glass, thus generally playing a role in accommodating the arc-changing requirements for forming large-radius and small-radius glass.

[0006] When there is one flexible shaft roller path in the multi-stage adjustable flexible shaft arc-changing unit, the multi-stage adjustable flexible shaft arc-changing unit is the first swingable unit; when there are multiple flexible shaft roller paths in the multi-stage adjustable flexible shaft arc-changing unit, the multi-stage adjustable flexible shaft arc-changing unit is the second swingable unit.

[0007] The beneficial effects are as follows: Two specific forms of the multi-stage adjustable flexible shaft arc-changing unit are provided. For the first form, the arc-changing unit can adjust the initial position for each flexible shaft roller path and its corresponding flexible shaft height adjustment, achieving more flexible and precise control; for the second form, the left swing arm and the right swing arm can drive the ends of multiple flexible shaft roller paths and the flexible shaft height adjustment mechanism in the arc-changing unit to swing to adjust the initial position, and the number of swing arm drive mechanisms can also be reduced, thereby simplifying the device structure and its control process, and reducing the equipment cost and failure rate.

[0008] Furthermore, the multi-stage adjustable flexible shaft arc-changing unit further includes an elastic member and a support. The flexible shaft roller path is fixed on the elastic member through the support. The elastic member is arranged between the flexible shaft roller path and the support assembly, and the movable end of the flexible shaft height adjustment mechanism is connected to the elastic member.

[0009] The beneficial effects are as follows: The flexible shaft height adjustment mechanism is transitioned by arranging the elastic member and the support, indirectly making the flexible shaft roller path fit the arc, and can make the arc formation of the flexible shaft roller path more regular and the glass arc formation quality higher.

[0010] Based on the above-mentioned multi-stage adjustable flexible shaft variable arc unit, the present invention provides a glass gradual arc forming device, which is arranged on the frame of a bent glass forming device and includes a plurality of flexible shaft variable arc units arranged at intervals along the glass conveying direction. At least two of the plurality of flexible shaft variable arc units are multi-stage adjustable flexible shaft variable arc units.

[0011] The beneficial effects are as follows: At least two multi-stage adjustable flexible shaft variable arc units in the glass gradual arc forming device can form different gradual change radii, enabling the glass to gradually form through a plurality of multi-stage adjustable flexible shaft variable arc units. For different multi-stage adjustable flexible shaft variable arc units with a small gradual change radius, first, the corresponding left swing arm and right swing arm can be swung to different heights by an external force according to the size of the target gradual change radius, so that the flexible shaft height adjustment mechanism and the end of the flexible shaft roller path in different multi-stage adjustable flexible shaft variable arc units reach different initial positions. Subsequently, the corresponding flexible shaft height adjustment mechanism performs secondary precise arc adjustment on the corresponding flexible shaft roller path, so that a plurality of flexible shaft roller paths form an arc with a gradually changing and smaller gradual change radius; for the flexible shaft variable arc unit with a large gradual change radius, since the moving end of the flexible shaft height adjustment mechanism requires a shorter stroke, it is not necessary to pre-adjust the left swing arm and the right swing arm. According to the size of the glass target radius, it is possible to flexibly select whether to swing the swing arms in the multi-stage adjustable flexible shaft variable arc unit and the different swing heights, and combine the adjustment of the flexible shaft height adjustment mechanism to form a plurality of different target gradual change radii to gradually form the glass, thereby meeting the arc change requirements for the gradual formation of large-radius and small-radius glass.

[0012] Furthermore, at least one of the first swingable units is provided in the multi-stage adjustable flexible shaft variable arc unit, and the left swing arm and the right swing arm in the first swingable unit are respectively connected to a swing arm driving mechanism.

[0013] The beneficial effects are as follows: Only one first swingable unit can be provided in at least two multi-stage adjustable flexible shaft variable arc units, or all of them can be first swingable units. Through the first swingable unit, more flexible swing adjustment can be achieved.

[0014] Furthermore, at least one of the second swingable units is provided in the multi-stage adjustable flexible shaft variable arc unit, and the left swing arm and the right swing arm in the second swingable unit are respectively connected to a swing arm driving mechanism.

[0015] The beneficial effects are as follows: Only one second swingable unit can be provided in at least two multi-stage adjustable flexible shaft variable arc units, or all of them can be second swingable units. Through the second swingable unit, synchronous swinging of a plurality of multi-stage adjustable flexible shaft variable arc units can be achieved simultaneously, which is convenient for adjustment and reduces the equipment cost.

[0016] Further, at least two of the multi-stage adjustable flexible shaft variable arc units share a middle support, or the middle support corresponds one-to-one with the multi-stage adjustable flexible shaft variable arc units.

[0017] The beneficial effect is that both structural settings of the middle support can achieve the swinging of the multi-stage adjustable flexible shaft variable arc units.

[0018] Furthermore, the swing arm driving mechanism is a push rod assembly or an independent chain assembly arranged on the frame. Two independent chain assemblies or two push rod assemblies are provided for each multi-stage adjustable flexible shaft variable arc unit to control the swinging of the corresponding left swing arm and right swing arm respectively.

[0019] The beneficial effect is that the push rod assembly or the independent chain assembly can achieve different swinging heights of each multi-stage adjustable flexible shaft variable arc unit.

[0020] Furthermore, when the swing arm driving mechanism is a multi-chain assembly, the same-side swing arms of multiple multi-stage adjustable flexible shaft variable arc units share a multi-chain assembly. The multi-chain assembly includes a rotating shaft driven by a motor and multiple sprockets arranged at intervals on the rotating shaft. The number of sprockets is the same as the number of multi-stage adjustable flexible shaft variable arc units. Each sprocket is connected to the corresponding multi-stage adjustable flexible shaft variable arc unit through a chain.

[0021] The beneficial effect is that the same-side swinging control of multiple multi-stage adjustable flexible shaft variable arc units can be achieved through one multi-chain assembly, which can reduce the investment in the swing arm driving mechanism, lower the energy consumption and control difficulty, and the design is more ingenious.

[0022] Still further, the number of teeth of the multiple sprockets in the multi-chain assembly is not completely the same.

[0023] The beneficial effect is that on the premise of the same chain specification, if the number of teeth of the sprockets is different, the diameters of the sprockets are also different. During the rotation of the rotating shaft, the swinging heights of the swing arms driven by the chains with different diameters of sprockets are also different, so that multiple swing arms can be adjusted to different heights.

[0024] In another implementation manner, when multiple multi-stage adjustable flexible shaft variable arc units are provided, all the left swing arms and all the right swing arms of the multiple multi-stage adjustable flexible shaft variable arc units are respectively connected to a shared swing arm driving mechanism on the corresponding side.

[0025] The beneficial effect is that the number of driving devices can be reduced.

[0026] Specifically, the shared swing arm drive mechanism includes a swing beam and a power device. The swing beam connects the left swing arm or the right swing arm on the same side together. One end of the swing beam is hinged to the frame of the bent glass forming equipment, and the other end is connected to the power device; the power device is a chain assembly or a push rod assembly.

[0027] Its beneficial effect is that: the left swing arms of all the soft shaft variable arc units that can be adjusted in multiple levels can adjust different heights under the drive of a swing beam, and the right swing arms of all the soft shaft variable arc units that can be adjusted in multiple levels can adjust different heights under the drive of a swing beam.

[0028] The multiple soft shaft variable arc units further include several fixed soft shaft variable arc units. The fixed soft shaft variable arc units are arranged at the front end of the soft shaft variable arc units that can be adjusted in multiple levels. The support assembly of the fixed soft shaft variable arc units is fixedly arranged on the frame. The front end refers to the direction of glass transportation. The fixed soft shaft variable arc units are located at the front end of the soft shaft variable arc units that can be adjusted in multiple levels. When the glass passes through, it first reaches the fixed soft shaft variable arc units and then reaches the soft shaft variable arc units that can be adjusted in multiple levels.

[0029] Its beneficial effect is that: the bending degree of the soft shaft roller path near the front end of the device is relatively small, and there is no need to set soft shaft variable arc units that can be adjusted in multiple levels. Instead, setting fixed soft shaft variable arc units can reduce the production cost of the equipment.

[0030] A method for gradually changing the arc adjustment of a soft shaft bent glass uses the above-mentioned glass gradually changing arc device; operate different soft shaft variable arc units that can be adjusted in multiple levels to swing to different heights in advance, and then control the soft shaft roller path to perform secondary precise arc forming through the soft shaft height adjustment mechanism in the soft shaft variable arc units that can be adjusted in multiple levels, so as to gradually reduce the gradual change radius of different soft shaft variable arc units that can be adjusted in multiple levels in the glass transportation direction.

[0031] The beneficial effect of this method is that: according to the size of the current glass target radius, for different soft shaft variable arc units with a small gradual change radius, the left swing arm and the right swing arm of the corresponding soft shaft variable arc units that can be adjusted in multiple levels must first swing to different heights in advance, and then drive the soft shaft roller path to precisely form an arc through the soft shaft height adjustment mechanism on the swing arms in each soft shaft variable arc unit. Finally, multiple soft shaft variable arc units are set to gradually decrease soft shaft gradual change radii, realizing the arc change requirements for gradually forming glass with a smaller radius. With the pre-forming of the swing arms, the stroke of the soft shaft height adjustment mechanism can be effectively reduced, the stability of the equipment can be improved, and the manufacturing cost can be reduced.

[0032] When the glass gradual arc forming device is provided with a number of fixed flexible shaft arc forming units, it is also necessary to preform an arc on the fixed flexible shaft arc forming units so that the gradual change radius of the fixed flexible shaft arc forming units and the multi-stage adjustable flexible shaft arc forming units gradually decreases in the glass conveying direction.

[0033] Its beneficial effect is that the fixed flexible shaft arc forming unit is arranged at the front end. When the gradual change radius is large, the internal flexible shaft height adjustment mechanism can be directly used to make the flexible shaft roller path form its gradual change target radius. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a schematic structural diagram of the multi-stage adjustable flexible shaft arc forming unit in Embodiment 1; Figure 2 It is a schematic structural diagram of the glass gradual arc forming device described in Embodiment 3; Figure 3 It is another schematic structural diagram of the glass gradual arc forming device described in Embodiment 3; Figure 4 It is a schematic structural diagram of the glass gradual arc forming device described in Embodiment 4; Figure 5 It is a schematic structural diagram of the glass gradual arc forming device described in Embodiment 5; Figure 6 It is another schematic structural diagram of the glass gradual arc forming device described in Embodiment 5; Figure 7 It is another schematic structural diagram of the glass gradual arc forming device described in Embodiment 5; Figure 8 It is a schematic structural diagram of the glass gradual arc forming device described in Embodiment 7; Figure 9 It is a schematic structural diagram of the glass gradual arc forming device described in Embodiment 8; Marks in the figure: 100, multi-stage adjustable flexible shaft arc forming unit, 101, flexible shaft roller path, 102, flexible shaft support, 103, elastic member, 104, hinge seat, 105, left swing arm, 106, screw rod adjustment mechanism, 107, middle support, 108, right swing arm; 200, frame; 300, multi-sprocket assembly, 301, multi-sprocket drive motor, 302, rotating shaft, 303, sprocket, 304, first chain; 400, connecting piece; 500, ejector rod assembly, 501, ejector rod driving motor, 502, ejector rod; 600, independent chain assembly, 601, single sprocket driving motor, 602, single sprocket, 603, second chain; 700, swing beam. Specific implementation manner

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but it shall not be used as a basis for any limitation to the invention.

[0037] Embodiment 1 A multi-stage adjustable flexible shaft variable arc unit includes a flexible shaft roller path, a flexible shaft height adjustment mechanism and a support assembly. There are several flexible shaft roller paths, and several flexible shaft roller paths are all arranged on the same support assembly through the flexible shaft height adjustment mechanism. The flexible shaft height adjustment mechanisms are arranged at intervals along the length direction of the flexible shaft roller path, and the movable end of the flexible shaft height adjustment mechanism is connected to the flexible shaft roller path. The movable end of the flexible shaft height adjustment mechanism specifically refers to the end used to drive and close to the flexible shaft roller path. The flexible shaft height adjustment mechanism can adopt linear telescopic mechanisms such as a lead screw adjustment mechanism, an electric push rod, and a hydraulic push rod. In this embodiment, a lead screw adjustment mechanism is adopted, and the movable end specifically refers to the upper end of the lead screw.

[0038] As Figure 1 shown, in this embodiment, the flexible shaft roller path 101 is one. The multi-stage adjustable flexible shaft variable arc unit including one flexible shaft roller path 101 is the first swingable unit. At this time, the support assembly in the multi-stage adjustable flexible shaft variable arc unit 100 is composed of a left swing arm 105 and a right swing arm 108 that are relatively rotatably connected. The inner ends of the left swing arm 105 and the right swing arm 108 are respectively hinged to the middle support 107, and the outer ends of the left swing arm 105 and the right swing arm 108 are connected to the swing arm driving mechanism. The swing arm driving mechanism can drive the corresponding outer ends of the swing arms to swing up and down to different heights.

[0039] Before the soft shaft height adjustment mechanism adjusts the soft shaft roller, for the soft shaft arc changing unit with a small target arc radius, the corresponding left swing arm and right swing arm are first swung by external force to change the initial position of the soft shaft height adjustment mechanism and the end of the soft shaft roller, and then the soft shaft height adjustment mechanism performs a second precise arc adjustment on the soft shaft roller, so that the soft shaft roller forms an arc with a smaller radius, and under the same arc radius condition, the stroke of the active end of the soft shaft height adjustment mechanism can be reduced, thereby improving the stability of the entire device; and for the soft shaft arc changing unit with a large target arc radius, since the active end of the soft shaft height adjustment mechanism requires a shorter stroke, it is not necessary to pre-adjust the left swing arm and the right swing arm. According to the size of the target radius of the glass, it is flexibly selected whether the swing arm in the multi-level adjustable soft shaft arc changing unit needs to swing and the swing height is different, and combined with the adjustment of the soft shaft height adjustment mechanism, different target arc radii are formed to shape the glass, so that it can play a role in compatible with the arc changing requirements of large radius and small radius glass molding.

[0040] Optionally, the left swing arm 105 and the right swing arm 108 in the first swingable unit are preferably square tubes. The arc changing unit can adjust the initial position for each flexible shaft roller and its corresponding flexible shaft height adjustment mechanism through the swing of the left swing arm and the right swing arm, so as to achieve more flexible and precise control.

[0041] Furthermore, in other embodiments, the multi-stage adjustable flexible shaft arc-changing unit 100 also includes an elastic member 103 and a flexible shaft support 102, and the elastic member 103 is made of spring steel wire or spring steel plate. The elastic member 103 is connected to the upper end of the screw of the screw adjustment mechanism 106 through an articulated seat 104, and the flexible shaft support 102 is also provided on the elastic member 103. The flexible shaft roller 101 is rotatably supported on the flexible shaft support 102, and the motor of the screw adjustment mechanism 106 is fixed on the left swing arm 105 or the right swing arm 108. The articulated seat 104 and the flexible shaft support 102 can clamp the elastic member 103 correspondingly, or the articulated seat 104 and the flexible shaft support 102 can be staggered. The flexible shaft height adjustment mechanism can make the flexible shaft roller fit into an arc by setting the transition between the elastic member and the support, so that the arc of the flexible shaft roller can be more regular and the arc quality can be higher.

[0042] Example 2 Based on Embodiment 1, the difference lies in that the multi-stage adjustable flexible shaft arc-changing unit includes a plurality of flexible shaft roller paths. The multi-stage adjustable flexible shaft arc-changing unit including a plurality of flexible shaft roller paths is the second swingable unit. A plurality of the flexible shaft roller paths are all arranged on the same support assembly through a flexible shaft height adjustment mechanism. Optionally, the left swing arm and the right swing arm in the second swingable unit are preferably frames, divided into a left frame and a right frame. The frame includes a plurality of square tubes and a connecting piece. The inner end of each square tube is hinged to the middle support, and the outer ends of a plurality of square tubes are all connected to the connecting piece, thereby forming the left frame or the right frame. The left and right sides of each flexible shaft roller path are respectively connected to one square tube in the left frame and the right frame, realizing the support and fixation of the flexible shaft roller path. By applying an external force to the outer ends of the left frame and the right frame, the swinging of a plurality of flexible shaft roller paths can be realized.

[0043] Alternatively, in other embodiments, the left swing arm and the right swing arm can also adopt other frame structures or flat plates. When adopting other frame structures, it is not necessary for each flexible shaft roller path to correspond to a square tube. Each flexible shaft roller path is arranged on the frame structure or the flat plate through a flexible shaft height adjustment mechanism. The inner end of the frame structure is hinged to the middle support, and the outer end swings under the action of an external force, as long as the swinging and the support and fixation of a plurality of flexible shaft roller paths can be realized.

[0044] In this solution, the left swing arm and the right swing arm can respectively drive the ends of a plurality of flexible shaft roller paths of the arc-changing unit and the flexible shaft height adjustment mechanism to swing to adjust the initial position, which is more convenient for adjustment. It can also reduce the number of swing arm drive mechanisms provided, thereby simplifying the device structure and its control process, and reducing the equipment cost and failure rate.

[0045] Embodiment 3 Based on the above Embodiment 2, this embodiment further relates to a glass gradual arc-forming device, which is arranged on the frame of a bent glass forming device and includes a plurality of multi-stage adjustable flexible shaft arc-changing units arranged at intervals along the glass conveying direction. The multi-stage adjustable flexible shaft arc-changing unit is the second swingable unit.

[0046] In this embodiment, the glass gradual arc-forming device includes a plurality of second swing units. First, different second swing units are manipulated to swing to different heights in advance, and then the soft shaft height adjustment mechanism in the multi-stage adjustable soft shaft arc-forming unit is used to control the soft shaft roller path for secondary precise arc-forming. Different multi-stage adjustable soft shaft arc-forming units can finally form different gradual change radii, and the gradual change radii of different multi-stage adjustable soft shaft arc-forming units gradually decrease in the glass conveying direction, so that the glass is gradually formed through a plurality of multi-stage adjustable soft shaft arc-forming units. For different multi-stage adjustable soft shaft arc-forming units with small gradual change radii, according to the size of their gradual change target radius, the corresponding left swing arm and right swing arm can be swung to different heights by an external force, so that the soft shaft height adjustment mechanism and the end of the soft shaft roller path are in different initial positions, and a plurality of soft shaft mixing paths form an arc with a gradually changing and smaller gradual change radius; for the soft shaft arc-forming unit with a large gradual change radius, since the movable end of the soft shaft height adjustment mechanism requires a shorter stroke, it is not necessary to adjust the left swing arm and the right swing arm in advance. According to the size of the glass target radius, it is possible to flexibly select whether the swing arms in the multi-stage adjustable soft shaft arc-forming unit need to swing and the different swing heights, and combine the adjustment of the soft shaft height adjustment mechanism to form a plurality of different gradual change target radii to gradually form the glass, so that it can meet the arc-forming requirements of gradually forming large-radius and small-radius glass.

[0047] As Figure 2 shown, the left swing arm 105 and the right swing arm 108 in each second swing unit are respectively connected to a swing arm driving mechanism, and the left swing arm 105 and the right swing arm 108 of the same second swing unit can respectively drive the ends of a plurality of soft shaft roller paths and the corresponding soft shaft height adjustment mechanism to swing synchronously by the same height.

[0048] A plurality of second swing units share a middle support, that is, the inner ends of the left swing arm 105 and the right swing arm 108 of each second swing unit are hinged to a common middle support. Alternatively, the middle support and the multi-stage adjustable soft shaft arc-forming unit are in one-to-one correspondence, and each middle support is fixed on the frame of the bent glass forming equipment.

[0049] When the device forms a gradual arc, the lead screws of the respective lead screw adjustment mechanisms of the soft shaft arc-forming unit control the soft shaft roller path to bend into an arc by lifting to different heights. For a plurality of second swing units, the left swing arm and the right swing arm of each second swing unit can be swung first, so as to change the initial position height of the lead screw adjustment mechanism and the end of the soft shaft roller path, so that the lead screw can obtain a large amplitude bending of the soft shaft roller path by lifting with a small stroke, meeting the small radius gradual forming requirement.

[0050] The swing arm driving mechanism of this embodiment is a push rod assembly. The fixed end of the push rod assembly is hinged to the frame below the corresponding multi-stage adjustable flexible shaft arc-changing unit, and the telescopic end of the push rod assembly is hinged to the outer end of the left swing arm or the right swing arm in the corresponding multi-stage adjustable flexible shaft arc-changing unit. As the telescopic end of the push rod assembly expands and contracts, it drives the left swing arm or the right swing arm to swing up and down.

[0051] The push rod assembly can adopt an electric, pneumatic or hydraulic push rod, or a manual adjusting screw. In this embodiment, an electric push rod is adopted, which includes a push rod driving motor 501 and a push rod 502. The upper end of the push rod 502 is hinged to the connecting piece 400 at the end of the left swing arm or the right swing arm, and the push rod driving motor 501 is hinged to the frame 200.

[0052] As another option, as Figure 3 , the swing arm driving mechanism is an independent chain assembly, and each left swing arm 105 or right swing arm 108 is driven by an independent chain assembly 600. Two independent chain assemblies 600 are provided for each multi-stage adjustable flexible shaft arc-changing unit to respectively control the swing of the left swing arm 105 and the right swing arm 108 in the multi-stage adjustable flexible shaft arc-changing unit. The independent chain assembly 600 is arranged at the top of the frame 200 and includes a single sprocket driving motor 601, a single sprocket 602 and a second chain 603. One end of the second chain 603 is fixed to the single sprocket 602, and the other end is connected to the connecting piece 400 on the left swing arm 105 or the right swing arm of the corresponding multi-stage adjustable flexible shaft arc-changing unit.

[0053] With the pre-swing of the swing arm to a certain height, the stroke of the lead screw adjusting mechanism can be effectively reduced, and the stability of the equipment can be improved.

[0054] Embodiment 4 As Figure 4 shown, the difference between this embodiment and Embodiment 3 lies in the swing arm driving mechanism. The swing arm driving mechanism of this embodiment is a multi-chain assembly 300, and the same side of multiple second swingable units shares a multi-chain assembly 300. The multi-chain assembly 300 includes a rotating shaft 302 driven by a multi-sprocket driving motor 301 and multiple sprockets 303 arranged at intervals on the rotating shaft 302. The number of sprockets 303 is the same as the number of second swingable units, and each sprocket 303 is connected to the corresponding second swingable unit through a chain. One end of the first chain 304 in the multi-chain assembly 300 is fixed to the sprocket 303, and the other end is connected to the left swing arm or the right swing arm of the corresponding second swingable unit.

[0055] In the gradual arc-forming device, the bending degree of the soft shaft roller path near the device outlet is greater, that is, the radius is smaller. Therefore, the height of the swing arm needs to be greater. Therefore, preferably, multiple sprockets 303 on the rotating shaft 302 use the first chain 304 of the same specification. Along the glass conveying direction, the diameters of the sprockets 303 gradually increase. In this way, the lengths of the first chains 304 on different sprockets 303 are different. During the rotation of the rotating shaft 302, along the glass conveying direction, the height of the swing arm gradually increases.

[0056] Embodiment 5 As Figure 5 shown, the difference between this embodiment and Embodiment 3 is that multiple said multi-stage adjustable soft shaft arc-changing units include at least two multi-stage adjustable soft shaft arc-changing units. Each said multi-stage adjustable soft shaft arc-changing unit adopts the first swing unit in Embodiment 1. The left swing arm 105 and the right swing arm 108 in each said first swing unit are respectively connected to a swing arm driving mechanism. The swing arm driving mechanism is a push rod assembly 500 arranged on the frame. The structure of the push rod assembly 500 is the same as that of the push rod assembly in Embodiment 2. This embodiment also adopts the form of an electric push rod. The push rod 502 therein is hinged to the corresponding left swing arm 105 or right swing arm 108. This device can adjust the initial position according to the adjustment of each soft shaft roller path and its corresponding soft shaft height, realizing more flexible and precise control. However, the number of swing arm driving mechanisms required is large and the cost is high.

[0057] Another option, as Figure 6 shown, the swing arm driving mechanism is an independent chain assembly 600 arranged on the frame 200. The structure of the independent chain assembly 600 is the same as the structure in Embodiment 3. The second chain 603 therein is connected to the left swing arm or right swing arm of the corresponding multi-stage adjustable soft shaft arc-changing unit.

[0058] Another option, as Figure 7 shown, the swing arm driving mechanism can adopt a multi-chain assembly. The difference is that each sprocket is connected to a left swing arm or right swing arm through a chain. The structure of the multi-chain assembly 300 is the same as that of the multi-chain assembly 300 in Embodiment 4.

[0059] Embodiment 6 In this embodiment, multiple said multi-stage adjustable soft shaft arc-changing units respectively include at least one second swing unit as described in Embodiment 2 and one first swing unit as described in Embodiment 1. The swing arm driving mechanism can be the independent chain assembly, push rod assembly or multi-chain assembly shown in any of the above embodiments. Using this embodiment, the positions and quantities of the soft shaft roller paths that need to be swung and adjusted simultaneously can be set flexibly.

[0060] Embodiment 7 AsFigure 8 As shown, the difference between this embodiment and Embodiment 2 is that all the multi-stage adjustable flexible shaft arc-changing units 100 are the first swingable units in Embodiment 1. The left swing arms of all the first swingable units swing together through a common swing arm driving mechanism, and the right swing arms of all the first swingable units swing together through a common swing arm driving mechanism. The common swing arm driving mechanism includes a swing beam 700 and a power device. The swing beam 700 connects all the left swing arms or all the right swing arms on the same side together. One end of the swing beam 700 is hinged to the frame of the bent glass forming equipment, and the other end is connected to the power device; the power device is a chain assembly or a push rod assembly. The power device in this embodiment adopts an independent chain assembly 600. After the independent chain assembly 600 lifts the swing beam 700, the left swing arms or right swing arms connected to the swing beam 700 are lifted to different heights, and the farther away from the device inlet side, the greater the height the swing arms are lifted.

[0061] Embodiment 8 As Figure 9 shown, on the basis of any of the above embodiments, the structure of the multi-stage adjustable flexible shaft arc-changing unit 100 in this embodiment is adjusted. The elastomer of the multi-stage adjustable flexible shaft arc-changing unit 100 described in Embodiment 1 is omitted. The upper end of the lead screw is connected to the hinge seat 104, and the hinge seat 104 is connected to the flexible shaft support 102. In this way, the bending forming of the flexible shaft roller path 101 is directly controlled by the lifting of the lead screw.

[0062] Embodiment 9 On the basis of any of the above embodiments, it further includes a plurality of fixed flexible shaft arc-changing units, and the fixed flexible shaft arc-changing units are arranged at the front end of the multi-stage adjustable flexible shaft arc-changing units. According to the setting form of the support assembly, multiple flexible shaft arc-changing units can be divided into fixed flexible shaft arc-changing units and the above-mentioned multi-stage adjustable flexible shaft arc-changing units 100. The structure of the fixed flexible shaft arc-changing unit adopts the description of the publication number CN210029220U, and its support cross beam is fixed on the frame. The front end refers to that in the glass conveying direction, the fixed flexible shaft arc-changing unit is located at the front end of the multi-stage adjustable flexible shaft arc-changing unit, so that when the glass passes through, it first reaches the fixed flexible shaft arc-changing unit and then reaches the multi-stage adjustable flexible shaft arc-changing unit.

[0063] When the device gradually forms an arc, the lead screws of each lead screw adjustment mechanism of the flexible shaft arc-changing unit control the flexible shaft roller path to be bent into an arc by lifting to different heights. For the fixed flexible shaft arc-changing unit, the height of the lead screw can be directly adjusted. For the multi-stage adjustable flexible shaft arc-changing unit 100, the left swing arm 105 and the right swing arm 108 can be swung first to change the initial position height of the lead screw, and then the flexible shaft roller path is lifted by a small stroke through the lead screw for secondary precise arc adjustment to obtain a large-height bending of the flexible shaft roller path and meet the small-radius gradual forming requirement.

[0064] Embodiment 10 A method for gradually adjusting the arc of a flexible shaft bent glass, based on the above Embodiments 1-9: (1) At least two of the multiple flexible shaft arc-changing units are multi-stage adjustable flexible shaft arc-changing units. According to the target radius of the glass, first manipulate different multi-stage adjustable flexible shaft arc-changing units to swing to different heights in advance.

[0065] Preferably, along the glass conveying direction, the heights at which different multi-stage adjustable flexible shaft arc-changing units swing in advance gradually increase, so that the initial position heights of the flexible shaft height adjustment mechanisms in different multi-stage adjustable flexible shaft arc-changing units gradually increase.

[0066] It should be noted that even if the heights at which different multi-stage adjustable flexible shaft arc-changing units swing in advance do not gradually increase, for example, even if the heights at which different multi-stage adjustable flexible shaft arc-changing units swing gradually decrease or there is no obvious high-low change rule, as long as there is a certain pre-swing height, the stroke of the height adjustment mechanism can be significantly reduced.

[0067] (2) Then, control the flexible shaft roller path to perform secondary precise arc formation through the flexible shaft height adjustment mechanism in the multi-stage adjustable flexible shaft arc-changing unit.

[0068] (3) Finally, gradually reduce the gradient radii of different multi-stage adjustable flexible shaft arc-changing units in the glass conveying direction.

[0069] (4) After the adjustment is completed, the hot glass passes through multiple flexible shaft arc-changing units with gradually changing arcs to reach the required bending shape.

[0070] According to the size of the glass target radius, for different flexible shaft arc-changing units with small gradient radii, the left swing arms and right swing arms of the corresponding multi-stage adjustable flexible shaft arc-changing units should first swing to different heights in advance, and then drive the flexible shaft roller path to precisely form an arc through the flexible shaft height adjustment mechanism on the swing arms in each flexible shaft arc-changing unit. Finally, set multiple flexible shaft arc-changing units to gradually decrease flexible shaft gradient radii to meet the arc-changing requirements for gradually forming glass with a smaller radius. With the pre-forming of the swing arms, the stroke of the flexible shaft height adjustment mechanism can be effectively reduced, the stability of the equipment can be improved, and the manufacturing cost can be reduced.

[0071] In another embodiment, for those further provided with fixed flexible shaft arc-changing units, different gradient radii are formed by the flexible shaft arc-changing units according to the glass target radius; specifically: for the fixed flexible shaft arc-changing unit located at the front end inside the device, directly control the flexible shaft roller path to bend and form through the lead screw of the lead screw adjustment mechanism; for the multi-stage adjustable flexible shaft arc-changing unit, first use the provided swing arm drive mechanism to control the left swing arm and the right swing arm to swing to a certain height, and then use the lead screw of the lead screw adjustment mechanism to control the flexible shaft roller path to perform secondary precise arc formation.

[0072] Regarding the distinction between the large radius and the small radius of the glass target radius, different designers can have different distinctions according to the different structures of their equipment and the material properties of the components. For example, for a soft shaft roller path of a specific length, it is necessary that the central angle of the arc length of the soft shaft roller path itself after the soft shaft roller path is arc-changed is greater than 30°. Only in this case can the formed glass target radius be a small radius. It is necessary that the central angle of the arc length of the soft shaft roller path itself after the soft shaft roller path is arc-changed is less than 30°. Only in this case can the formed glass target radius be a large radius.

[0073] It should be noted that whether the left swing arm and the right swing arm in the multi-stage adjustable soft shaft arc-changing unit need to swing in advance also needs to consider the bending radius of the soft shaft roller path. If the screw jacking height required for the soft shaft roller path to bend is large, which in turn affects the stability of the screw, it is necessary to adjust the left swing arm and the right swing arm in advance to reduce the stroke of the movable end of the screw. Since the stability of the screw is relatively closely related to its length-diameter ratio, the material of the screw also needs to be considered.

[0074] It should be noted that for the soft shaft arc-changing unit with a small gradient target radius introduced in the above embodiment, the left swing arm and the right swing arm need to be swung to a certain height first, and then the soft shaft height adjustment mechanism is adjusted to make the soft shaft roller path form an arc accurately for the second time. This is the standard adjustment sequence. During the actual operation of the factory equipment, if, after long-term exploration and use, there are clear data on the height of the swing of the swing arm and the height of the jacking of the soft shaft height adjustment mechanism respectively for glass of a specific radius, it is also possible to adjust the soft shaft height adjustment mechanism first, and then swing the left swing arm and the right swing arm; or, the swing of the swing arm and the soft shaft height adjustment mechanism are carried out simultaneously. Both adjustment or use methods are within the protection scope of the present invention.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Those of ordinary skill in the art should understand that the specific implementation manners of the present invention can be modified or equivalently replaced by referring to the above embodiments. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims pending for approval.

Claims

1. A multi-stage adjustable flexible shaft variable arc unit, comprising a flexible shaft roller path, a flexible shaft height adjustment mechanism and a support assembly. There are several flexible shaft roller paths, and several flexible shaft roller paths are all arranged on the same support assembly through a plurality of flexible shaft height adjustment mechanisms. The flexible shaft height adjustment mechanisms are arranged at intervals along the length direction of the flexible shaft roller path. The movable end of the flexible shaft height adjustment mechanism is connected to the flexible shaft roller path. It is characterized in that: The support assembly includes a left swing arm and a right swing arm. The inner ends of the left swing arm and the right swing arm are respectively hinged to the middle support. The outer ends of the left swing arm and the right swing arm can swing up and down around the middle support under the action of an external force.

2. The multi-stage adjustable flexible shaft variable arc unit according to claim 1, characterized in that: It further includes an elastic member and a support. Each of the flexible shaft roller paths is fixed to the elastic member through the support. The elastic member is arranged between the flexible shaft roller path and the support assembly. The movable end of the flexible shaft height adjustment mechanism is connected to the elastic member.

3. The multi-stage adjustable flexible shaft variable arc unit according to claim 1 or 2, characterized in that: When there is one flexible shaft roller path in the multi-stage adjustable flexible shaft variable arc unit, the multi-stage adjustable flexible shaft variable arc unit is the first swingable unit; when there are multiple flexible shaft roller paths in the multi-stage adjustable flexible shaft variable arc unit, the multi-stage adjustable flexible shaft variable arc unit is the second swingable unit.

4. A glass gradually changing into an arc device, arranged on the frame of a bent glass forming device, comprising a plurality of flexible shaft variable arc units arranged at intervals along the glass conveying direction. It is characterized in that: At least two of the multiple flexible shaft variable arc units are the multi-stage adjustable flexible shaft variable arc units described in claim 2.

5. The glass gradually changing into an arc device according to claim 4, characterized in that: At least one of the first swingable units is included in the multi-stage adjustable flexible shaft variable arc unit. The left swing arm and the right swing arm in the first swingable unit are respectively connected to a swing arm driving mechanism.

6. The glass gradually changing into an arc device according to claim 4, characterized in that: At least one of the second swingable units is included in the multi-stage adjustable flexible shaft variable arc unit. The left swing arm and the right swing arm in the second swingable unit are respectively connected to a swing arm driving mechanism.

7. The glass gradually changing into an arc device according to claim 4, characterized in that: At least two of the multi-stage adjustable flexible shaft variable arc units share a middle support, or the middle support and the multi-stage adjustable flexible shaft variable arc unit are in one-to-one correspondence.

8. The glass gradually changing into an arc device according to claim 5 or 6, characterized in that: The swing arm driving mechanism is a push rod assembly or an independent chain assembly arranged on the frame. Two independent chain assemblies or two push rod assemblies are arranged for each multi-stage adjustable flexible shaft variable arc unit to respectively control the swing of the corresponding left swing arm and the right swing arm.

9. The glass gradually changing into an arc device according to claim 5 or 6, characterized in that: When the swing arm driving mechanism is a multi-chain assembly, the same-side swing arms of multiple multi-stage adjustable flexible shaft variable arc units share a multi-chain assembly. The multi-chain assembly includes a rotating shaft driven by a motor and a plurality of sprockets arranged at intervals on the rotating shaft. The number of sprockets is the same as the number of multi-stage adjustable flexible shaft variable arc units. Each sprocket is connected to the corresponding multi-stage adjustable flexible shaft variable arc unit through a chain.

10. The glass gradually changing into an arc device according to claim 9, characterized in that: The number of teeth of the multiple sprockets in the multi-chain assembly is not completely the same.

11. The glass gradually changing into an arc device according to claim 4, characterized in that: All the left swing arms and all the right swing arms in at least two of the multi-stage adjustable flexible shaft variable arc units are respectively connected to a shared swing arm driving mechanism on the corresponding side.

12. The glass gradually changing into an arc device according to claim 11, characterized in that: The shared swing arm driving mechanism includes a swing beam and a power device. The swing beam connects the left swing arms or the right swing arms on the same side together. One end of the swing beam is hinged to the frame of the bent glass forming device, and the other end is connected to the power device; the power device is a chain assembly or a push rod assembly.

13. The glass gradually changing into an arc device according to any one of claims 4 to 7, characterized in that: The multiple flexible shaft variable arc units further include several fixed flexible shaft variable arc units. The fixed flexible shaft variable arc units are arranged at the front end of the multi-stage adjustable flexible shaft variable arc units. The support assembly of the fixed flexible shaft variable arc units is fixedly arranged on the frame.

14. A method for gradually adjusting the arc of a flexible shaft bent glass, using the glass gradually changing into an arc device according to any one of claims 4 to 13; it is characterized in that: Manipulate different multi-stage adjustable flexible shaft variable arc units to pre-swing to different heights, and then control the flexible shaft roller table to perform secondary precise arc forming through the flexible shaft height adjustment mechanism in the multi-stage adjustable flexible shaft variable arc unit, so as to gradually reduce the gradient radius of different multi-stage adjustable flexible shaft variable arc units in the glass conveying direction.

15. The method for gradually adjusting the arc according to claim 14, characterized in that: When several fixed flexible shaft variable arc units are provided in the glass gradual arc forming device, it is also necessary to pre-form an arc for the fixed flexible shaft variable arc unit, so that the gradient radius of the fixed flexible shaft variable arc unit and the multi-stage adjustable flexible shaft variable arc unit gradually decreases in the glass conveying direction.

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