Unit component of hollow building panel and preparation system thereof

Abstract

The invention provides a unit component of a hollow building panel and a preparation system of the unit component. The unit component comprises a first panel part, a second panel part and a core plate, the two ends of the core plate are connected with the inner end of the first panel part and the inner end of the second panel part through the first connecting folded edge part and the second connecting folded edge part respectively. The inner end of the first panel part and the outer end of the second panel part respectively form a first sewing turnup and a second sewing turnup which are bent towards the inner side and the inner end; the first connecting folded edge part and the second connecting folded edge part respectively comprise a first bending composite section and a second bending composite section which are inclined outwards; the first bending composite section and the second bending composite section correspond to the first sewing turnup and the second sewing turnup respectively; the unit components are sewn and fixed through the first bent composite section of the first unit component and the first sewing turned edge of the second unit component, and the production efficiency of the hollow building panel can be improved while the mechanical performance of the hollow building panel is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite thermal insulation panels for buildings, in particular to a unit component of a hollow building panel and a preparation system thereof. BACKGROUND

[0002] Currently, one of the important development trends is to form a building panel (with a metal plate as a surface layer and a thermal insulation core material (such as rock wool) as a sandwich layer) by using a composite material. The existing hollow building panel generally has a panel located on both surfaces and a connecting lower mold plate located between the two panels. Since the connecting lower mold plate is located between the two panels and is relatively fixed, it can form a building panel with suitable strength and stiffness. At the same time, since it has a hollow structure, the weight of the hollow building panel can be greatly reduced.

[0003] The hollow building panel is usually formed by connecting a plurality of unit components. By changing the number of unit components, the hollow building panel can have a suitable area. The shape of the structure of the unit component not only affects the mechanical properties of the hollow building panel, but also relates to the connection and fixing method between the unit components, thereby affecting the production efficiency of the hollow building panel.

[0004] Therefore, how to improve the production efficiency of the hollow building panel while ensuring the mechanical properties of the hollow building panel is an important technical problem to be solved in the technical field. SUMMARY

[0005] The present application discloses a unit component of a hollow building panel and a preparation system thereof. Using the unit component, the hollow building panel can be conveniently formed, and the production efficiency of the hollow building panel can be improved while ensuring the mechanical properties of the hollow building panel.

[0006] The unit component of the hollow building panel provided by the present application is formed by bending a plate, i.e. it can be formed by bending a complete plate, including a first panel portion, a second panel portion and a core plate.

[0007] The core plate is connected to the inner end of the first panel portion and the inner end of the second panel portion through the first connecting flange portion and the second connecting flange portion at both ends, respectively; and the inner end and the outer end of the first panel portion and the second panel portion form the first and second stitched flanges bent inwardly, respectively.

[0008] The first and second connecting flange portions each include a first and second bending composite section inclined outwardly.

[0009] The first and second bending composite sections correspond to the first and second stitched flanges, respectively, so as to facilitate the stitching and fixing between the unit components.

[0010] Preferably, the first panel portion and the second panel portion are parallel to each other in the extension direction, and the core plate is perpendicular to the first panel portion in the extension direction.

[0011] Preferably, the first panel portion and the second panel portion are respectively inclined to both sides in the extension direction.

[0012] Preferably, the first connecting flange portion and the second connecting flange portion further respectively comprise a first folding accommodation recess and a second folding accommodation recess.

[0013] The first folding accommodation recess is connected between the first bending composite section and the first panel portion, and the second folding accommodation recess is connected between the second bending composite section and the second panel portion.

[0014] The first folding accommodation recess and the second folding accommodation recess form a first folding accommodation groove and a second folding accommodation groove respectively to accommodate the sewing folding edge.

[0015] The first folding accommodation groove and the second folding accommodation groove each have a depth of not less than 4 times the thickness of the unit component plate.

[0016] Preferably, the first panel portion and the second panel portion are symmetrically arranged.

[0017] Preferably, the first panel portion has a cross-sectional width (W1) of 1.3 to 1.9 times the cross-sectional width ratio (W2) of the core plate.

[0018] Preferably, the first sewing flange and the second sewing flange each have a cross-sectional width (W3) greater than one-tenth of the cross-sectional width (W1) of the first panel portion.

[0019] Preferably, a system for manufacturing a unit component of a hollow building panel comprises:

[0020] A bending module: comprising a bending upper die and a bending lower die, different specifications of the bending upper die and the bending lower die are selected according to the target bending angle of the plate and the thickness of the plate;

[0021] A lifting module: the lifting module is connected with the bending upper die in the bending module, and the lifting module comprises a hydraulic telescopic rod for driving the bending upper die to lift;

[0022] A control module: comprising a counter installed on the hydraulic telescopic rod, the counter is used to detect the actual feeding times of the hydraulic telescopic rod, and the counter and the hydraulic telescopic rod are respectively electrically connected with a controller, when the actual feeding times of the hydraulic telescopic rod and the target feeding times of the bending upper die are the same, the controller controls the hydraulic telescopic rod to automatically stop elongation.

[0023] Preferably, the target feeding times of the bending upper die are obtained by the following process:

[0024] Step 1: determine the thickness of the plate, the target bending angle of the plate, the die outlet width of the bending lower die and the feeding amount of the bending upper die per feeding;

[0025] Step 2: obtain the bending inner diameter of the plate after bending according to the die outlet width of the bending lower die;

[0026] Step 3: obtain the bending arc length according to the bending inner diameter of the plate after bending;

[0027] Step 4: obtain the target feeding times of the bending upper die from the bending arc length calculated in step 3 and the feeding amount of the bending upper die per feeding.

[0028] Preferably, the bending lower die comprises a base, symmetrical sliding grooves are arranged on the upper end of the base, a threaded rod is rotatably arranged in the sliding groove, the thread segments on the front and back sides of the threaded rod are opposite in rotation direction, sliding blocks two are symmetrically arranged on the front and back sides of the threaded rod, the upper end of the sliding block two is fixedly connected with a supporting block, the supporting block is rotatably connected with the lower die plate at the end close to each other, a connecting shaft is rotatably arranged between the front and back lower die plates, a distance meter is symmetrically arranged on the front and back sides of the connecting shaft, a sliding block one is fixedly connected to the lower end of the connecting shaft, the sliding block one is slidably connected with the base, the cylindrical segment on the rear side of the threaded rod penetrates through the rear end of the sliding groove and is fixedly connected with a gear one, gear twos are meshed between the left and right gears one, the gear two is rotatably connected with the base through a rotating shaft, a torsional spring is fixedly arranged between the gear two and the base, the torsional spring is sleeved on the rotating shaft, the upper side of the gear two is meshed with a rack, the rack is fixedly connected with a matching block one, the matching block one is slidably connected with the rear end of the base along the left and right directions, the inclined segment of the matching block one is slidably connected with the inclined segment of a matching block two, the matching block two is slidably connected with the rear end of the base along the up and down directions, the matching block two is fixedly connected with a contact block, and the contact block is correspondingly contacted with a contact rod connected with a hydraulic telescopic rod.

[0029] The hollow building panel provided by the application comprises a plurality of sequentially arranged unit components, wherein the unit component is the unit component of the hollow building panel; the first bending composite segment in the first unit component is inserted between the first stitching flange and the first panel part of the second unit component; the second bending composite segment in the first unit component is inserted between the second stitching flange and the second panel part of the second unit component; and the first bending composite segment of the first unit component and the first stitching flange and the first panel part of the second unit component are fixedly attached; and the second bending composite segment in the first unit component and the second stitching flange and the second panel part of the second unit component are fixedly attached. The hollow building panel is formed by using the unit component, and corresponding technical effects can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application, and are used to explain the application together with the embodiments of the application, and do not constitute a limitation on the application. In the drawings:

[0031] Figure 1 A unit component cross-sectional structure diagram of a hollow building panel is provided for the present application;

[0032] Figure 2 Two adjacent unit components Figure 1 The unit component pair corresponding diagram is shown;

[0033] Figure 3 The adjacent two unit component bending composite segments and the stitched flanging staggered state are schematically shown;

[0034] Figure 4 The adjacent two unit component bending composite segments and the stitched flanging fit state structure are schematically shown;

[0035] Figure 5 A Figure 4 The A part enlarged structure diagram in the figure;

[0036] Figure 6 A whole cross-sectional diagram of a hollow building panel is provided for the present application;

[0037] Figure 7 A side view of a hollow building panel is provided for the present application;

[0038] Figure 8 The bending lower die structure schematic of the present application is shown Figure 1 ;

[0039] Figure 9 The bending lower die structure schematic of the present application is shown Figure 2 .

[0040] In the figure: 10, first panel part; 11, first stitched flanging; 20, second panel part; 21, second stitched flanging; 30, core board; 40, first connecting flanging part; 41, first bending composite segment; 42, first folding accommodating inner recess; 50, second connecting flanging part; 51, second bending composite segment; 52, second folding accommodating inner recess; 60, base; 61, support block; 62, lower die plate; 63, connecting shaft; 64, threaded rod; 65, gear one; 66, gear two; 67, fitting block one; 68, contact block; 69, fitting block two; 70, sliding block one; 71, sliding block two; 80, range finder. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0042] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and is not intended to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0043] The following describes the specific embodiments provided by the present application. Those skilled in the art can understand that in the present patent, the unit member is a long strip-shaped member, and the main improvement structure is embodied in the cross-sectional structure. Therefore, for the convenience of description and understanding, the orientation words in the present document are mainly determined based on the cross-section shown in the corresponding drawings. For the purpose of understanding and saving space, this part describes the hollow building panel unit member at the same time, and the hollow building panel is described.

[0044] The present application provides the following embodiments

[0045] Embodiment 1: The present application provides a unit member of a hollow building panel, referring to Figure 1 The unit member is a long strip-shaped member, which is formed by bending a plate material of a predetermined length and width by a suitable method. The metal plate can be a 2mm thick galvanized steel plate. The unique feature of the unit member is the cross-sectional structure, which includes a first panel portion 10, a second panel portion 20 and a core plate 30.

[0046] The core plate 30 is connected to the inner end of the first panel portion 10 and the inner end of the second panel portion 20 through the first connecting flange portion 40 and the second connecting flange portion 50 at both ends, respectively. The connecting flange portion is formed by composite plate material, and the first connecting flange portion 40 and the second connecting flange portion 50 respectively include a first bending composite section 41 and a second bending composite section 51 which are inclined outwardly.

[0047] The inner end of the first panel portion 10 and the outer end of the second panel portion 20 respectively form a first sewing flange 11 and a second sewing flange 21 which are bent inwardly and inwardly, forming a hook shape.

[0048] The first bending composite section 41 and the second bending composite section 51 correspond to the first sewing flange 11 and the second sewing flange 21, respectively, so that the unit members overlap each other, thereby facilitating the sewing and fixing between the unit members.

[0049] The working principle of the above technical solution is as follows:

[0050] refer to Figure 2 and Figure 3 , Figure 2 For two adjacent Figure 1 The diagram showing the corresponding unit components is shown. Figure 3 The diagram illustrates the staggered arrangement of the bent composite segments and seam flanges of two adjacent unit components. It can be determined that the aforementioned unit components, integrally formed by bending, can be sequentially arranged in the cross-sectional direction, with the first bent composite segment 41 of the first unit component inserted between the first seam flange 11 and the first panel portion 10 of the second unit component; and the second bent composite segment 51 of the first unit component inserted between the second seam flange 21 and the second panel portion 20 of the second unit component.

[0051] See again Figure 4 and Figure 5 , Figure 4 The diagram illustrates the structural state of two adjacent unit components with bent composite sections and stitched flanges in contact. Figure 5 for Figure 4 Enlarged structural diagram of section A. The first bent composite section 41 of the first unit component is fixedly fitted to the first seam flange 11 and the first panel portion 10 of the second unit component. The second bent composite section 51 of the first unit component is fixedly fitted to the second seam flange 21 and the second panel portion 20 of the second unit component. This allows adjacent unit components to be sewn together and fixed. Several unit components are sequentially connected and fixed in the same manner to form a hollow building panel of appropriate size. The first bent composite section 41 of the first unit component and the first seam flange 11 of the second unit component can be used to easily form a hollow building panel. At the same time, the unit components are fixed together by sewing the first bent composite section 41 of the first unit component and the first seam flange 11 of the second unit component. Combined with the core board 30, the first panel portion 10 and the second panel portion 20 are connected. This can improve the production efficiency of hollow building panels while ensuring their mechanical properties.

[0052] Example 2: Based on Example 1, with reference to Figures 1-4 As shown, the extension directions of the first panel portion 10 and the second panel portion 20 are parallel, and the extension direction of the core board 30 is perpendicular to the extension direction of the first panel portion 10.

[0053] The first panel portion 10 and the second panel portion 20 extend at an angle to both sides, respectively.

[0054] The working principle of the above technical solution is as follows:

[0055] When the unit member is formed by bending, the extension directions of the first panel portion 10 and the second panel portion 20 can be kept parallel, and before the adjacent unit members are stitched, the first panel portion 10 and the second panel portion 20 are first spread outward by a suitable device to form a tapered structure, so that the adjacent unit members can be staggered. In this way, the relative positions of the first panel portion 10 and the second panel portion 20 to the core plate 30 before and after the hollow building panel formed by stitching are the same, which reduces the stress of the hollow building panel after stitching, reduces the deformation of the hollow building panel, and improves the stability of the performance of the hollow building panel mechanism. Of course, when the unit member is formed by bending, the first panel portion 10 and the second panel portion 20 can also extend obliquely to the two sides, respectively. In this way, when the unit members are stitched, the tapered structure formed by the first panel portion 10 and the second panel portion 20 can facilitate the connection between the unit members, thereby facilitating the stitching and fixing, which can improve the production efficiency of the hollow building panel and reduce the cost of the hollow building panel.

[0056] The extension direction of the core plate 30 is perpendicular to the extension direction of the first panel portion 10. In this way, the supporting effect of the core plate 30 can be fully utilized to ensure the rigidity and stability of the hollow building panel in the thickness direction. According to actual needs, the extension direction of the core plate 30 can also be arranged to be relatively inclined to the extension direction of the first panel portion 10 to have higher strength or rigidity in certain specific directions.

[0057] Embodiment 3: based on embodiment 1, referring to Figures 2-5 The first connecting flange portion 40 and the second connecting flange portion 50 further comprise a first folding accommodation inner recess 42 and a second folding accommodation inner recess 52, respectively.

[0058] The first folding accommodation inner recess 42 is connected between the first bending composite section 41 and the first panel portion 10, and the second folding accommodation inner recess 52 is connected between the second bending composite section 51 and the second panel portion 20.

[0059] The first folding accommodation inner recess 42 and the second folding accommodation inner recess 52 form a first folding accommodation groove and a second folding accommodation groove, respectively, to accommodate the stitching folded edge.

[0060] The depths of the first folding accommodation groove and the second folding accommodation groove are both not less than 4 times the thickness of the plate material forming the unit member.

[0061] The working principle of the above technical solution is as follows:

[0062] The first folding accommodation inner recess 42 and the second folding accommodation inner recess 52 can be arranged to locate the stitching folded edge inside the side surface of the first panel portion 10 and the second panel portion 20, thereby ensuring the flatness of the surface of the hollow building panel and improving the use performance of the hollow building panel.

[0063] Embodiment 4: on the basis of Embodiment 1, referring to Figure 1 As shown in the figure, the first panel portion 10 and the second panel portion 20 are symmetrically arranged;

[0064] The cross-sectional width W1 of the first panel portion 10 is 1.3 to 1.9 times the cross-sectional width W2 of the core plate 30;

[0065] The cross-sectional width W3 of the first and second stitched flanges 11 and 21 is greater than one-tenth of the cross-sectional width W1 of the first panel portion 10.

[0066] The working principle of the above technical solution is:

[0067] The first panel portion 10 and the second panel portion 20 are symmetrically arranged, which can ensure the flatness of the hollow building panel and avoid deflection, W1 is 1.3 to 1.9 times W2, which can ensure the panel portion supporting effect of the core plate 30, and further ensure the strength of the hollow building panel, W3 is greater than one-tenth of W1, which can ensure that the unit components have a suitable connection size, and further ensure the reliability of the connection between the unit components in the hollow building panel.

[0068] Embodiment 5: as described in Embodiments 1-4, the above-mentioned unit components are sequentially arranged and stitched and fixed, which can form the hollow building panel provided by the present application, referring to Figure 6 and Figure 7 In the hollow building panel, the first bent composite section 41 in the first unit component is inserted between the first stitched flange 11 and the first panel portion 10 of the second unit component; the second bent composite section 51 in the first unit component is inserted between the second stitched flange 21 and the second panel portion 20 of the second unit component; and the first bent composite section 41 of the first unit component and the first stitched flange 11 and the first panel portion 10 of the second unit component are fixedly attached; the second bent composite section 51 in the first unit component and the second stitched flange 21 and the second panel portion 20 of the second unit component are fixedly attached. The use of the unit component to form the hollow building panel can produce corresponding technical effects;

[0069] In the hollow building panel, the first and second connecting flange portions 40 and 50 can further include first and second folded accommodation inner recesses 42 and 52, respectively; the first folded accommodation inner recess 42 is connected between the first bent composite section 41 and the first panel portion 10, and the second folded accommodation inner recess 52 is connected between the second bent composite section 51 and the second panel portion 20;

[0070] The first and second folding accommodation inner recesses 42 and 52 form first and second folding accommodation grooves respectively to accommodate the seamed folding edges. This can also improve the flatness of the surface of the hollow building panel, and the first seamed folding edge 11 in the first unit component can be inserted between the first bending composite section 41 and the first folding accommodation inner recess 42 of the second unit component, the second seamed folding edge 21 in the first unit component can be inserted between the second bending composite section 51 and the second folding accommodation inner recess 52 of the second unit component, and the first seamed folding edge 11 in the first unit component and the first bending composite section 41 and the first folding accommodation inner recess 42 of the second unit component are fixedly attached, and the second seamed folding edge 21 in the first unit component and the second bending composite section 51 and the second folding accommodation inner recess 52 of the second unit component are fixedly attached, so as to improve the reliability of the seamed connection and fixation between the unit components and improve the rigidity of the hollow building panel.

[0071] Embodiment 5: on the basis of embodiment 1, a preparation system of a unit component of a hollow building panel, comprising:

[0072] The bending module comprises a bending upper die and a bending lower die, and different specifications of the bending upper die and the bending lower die are selected according to the target bending angle of the plate and the thickness of the plate;

[0073] The lifting module is connected with the bending upper die in the bending module, and the lifting module comprises a hydraulic telescopic rod for driving the bending upper die to lift;

[0074] The control module comprises a counter installed on the hydraulic telescopic rod, the counter is used for detecting the actual feeding times of the hydraulic telescopic rod, and the counter and the hydraulic telescopic rod are respectively electrically connected with the controller; when the actual feeding times of the hydraulic telescopic rod and the target feeding times of the bending upper die are the same, the controller controls the hydraulic telescopic rod to automatically stop elongation;

[0075] The target feeding times of the bending upper die are obtained by the following process:

[0076] Step 1: determining the thickness of the plate, the target bending angle of the plate, the width of the die outlet of the bending lower die, and the feeding amount of the bending upper die per feeding;

[0077] Step 2: obtaining the bending inner diameter of the plate after bending according to the width of the die outlet of the bending lower die;

[0078] Step 3: obtaining the bending arc length according to the bending inner diameter of the plate after bending, the target bending angle of the plate and the thickness of the plate;

[0079] Step 4: obtaining the target feeding times of the bending upper die from the bending arc length calculated in step 3 and the feeding amount of the bending upper die per feeding, wherein the target feeding times of the bending upper die in step 4 are calculated by formula (1);

[0080]

[0081] Wherein, L is the target feeding times of the bending upper die, X is the feeding amount of the bending upper die per feeding, K is the bending coefficient, π is the circular constant, taking the value of 3.14, H is the thickness of the plate, T is the target bending angle of the plate, C is the die outlet width of the bending lower die;

[0082] The working principle of the above technical solution is:

[0083] The plate comprises a first panel portion 10, a second panel portion 20 and a core plate 30, the target feeding times of the bending upper die are calculated from the time when the bending upper die contacts the plate, the actual feeding times detected by the counter are detected from the time when the bending upper die contacts the plate, the combination of the bending upper die, the bending lower die and the hydraulic telescopic rod is equivalent to the existing bending machine, different specifications of the bending upper die and the bending lower die are selected according to the target bending angle of the plate and the thickness of the plate, which are common knowledge of those skilled in the art, and the present application will not be described in detail, when the plate is bent, the plate is placed on the bending lower die, then the bending upper die is driven to move downward by the hydraulic telescopic rod, the plate is bent by the cooperation of the bending upper die and the bending lower die, the bending coefficient is the ratio of the bending plate inner diameter to the die outlet width, taking the value of 0.16-0.17, The bending inner diameter of the bent plate is the bending arc length, the feeding amount of the bending upper die per feeding is equivalent to the feeding amount of the existing bending machine per cutting, the setting of the control module automatically controls the extension length of the hydraulic telescopic rod according to the target bending angle of the plate, so as to avoid that the extension length of the hydraulic telescopic rod is too long, the pressure on the plate and the bending lower die is too large, and the quality of the bent plate and the service life of the bending lower die are affected.

[0084] Example 6: on the basis of example 5, as Figures 8-9As shown, the bending lower die comprises a base 60, the upper end of the base 60 is symmetrically provided with a sliding groove on the left and right sides, a threaded rod 64 is rotatably arranged in the sliding groove, the thread segments on the front and back sides of the threaded rod 64 are opposite in rotation direction, the front and back sides of the threaded rod 64 are symmetrically provided with sliding blocks two 71, the upper end of the sliding blocks two 71 is fixedly connected with a supporting block 61, the ends of the supporting blocks 61 close to each other are rotatably connected with lower die plates 62, the lower die plates 62 on the front and back sides are rotatably provided with a connecting shaft 63, the front and back sides of the connecting shaft 63 are symmetrically provided with a range finder 80, the lower end of the connecting shaft 63 is fixedly connected with a sliding block one 70, the sliding block one 70 is slidably connected with the base 60, the rear side of the threaded rod 64 is provided with a cylindrical segment which penetrates through the rear end of the sliding groove and is fixedly connected with a gear one 65, the gear ones 65 on the left and right sides are meshed with a gear two 66, the gear two 66 is rotatably connected with the base 60 through a rotating shaft, a torsional spring is fixedly arranged between the gear two 66 and the base 60, the torsional spring is sleeved on the rotating shaft, the upper side of the gear two 66 is meshed with a rack, the rack is fixedly connected with a matching block one 67, the matching block one 67 is slidably connected with the rear end of the base 60 in the left-right direction, the inclined segment of the matching block one 67 is slidably connected with an inclined segment of a matching block two 69, the matching block two 69 is slidably connected with the rear end of the base 60 in the up-down direction, the matching block two 69 is fixedly connected with a contact block 68, and the contact block 68 is correspondingly contacted with a contact rod connected with a hydraulic telescopic rod.

[0085] The working principle of the above technical scheme is as follows:

[0086] Optionally, a new bending lower die is provided to replace the existing bending lower die used in Embodiment 5. When bending the plate, the plate is placed on the base 60, and the bending position of the plate overlaps with the connecting shaft 63. The range finder 80 is used to detect the distance between the left and right ends of the connecting shaft 63 and the left and right ends of the plate, respectively. If the plate deviates during the bending process, the detection value of the range finder will change. The range finder can be connected to an alarm through a controller two, and the range finder can control the alarm through the controller two to alarm and remind the staff to correct the plate to avoid affecting the bending effect of the plate after the plate deviates. When the hydraulic telescopic rod drives the bending upper die to move downward until the bending upper die is in contact with the bending position of the plate, the contact rod connected with the hydraulic telescopic rod is in contact with the matching block two 69 at this time. The contact rod installed on the hydraulic telescopic rod is independent of the bending upper die and does not interfere with each other. The installation position of the contact rod can be adjusted to ensure that the bending upper die is in contact with the bending position of the plate of different thicknesses. After the bending upper die is in contact with the bending position of the plate of different thicknesses, the contact rod driven by the hydraulic telescopic rod is in contact with the matching block two 69.

[0087] The cooperation block two 69 pushes the cooperation block one 67 to slide, the cooperation block one 67 drives the rack to move, the rack drives the gear two 66 to rotate, the torsional spring is deformed, the gear two 66 drives the gear one 65 to rotate, the gear one 65 drives the threaded rod 64 to rotate, the threaded rod 64 drives the support block 61 to move in the direction of approaching each other, the support block 61 drives the lower die plate 62 to rotate, the lower die plate 62 drives the connecting shaft 63 to move downwards, the connecting shaft 63 moves downwards along with the downward movement of the bending upper die, the sliding block one 70 is slidably connected with the base 60, and the movement of the connecting shaft 63 is guided, so that the bending upper die drives the plate to be bent, after the hydraulic telescopic rod stops moving, the plate is bent, the support blocks 61 on the front and back sides stop moving, the lower die plate 62 stops rotating, the lower die plate 62 can rotate downwards along with the downward movement of the bending upper die, since the inclination angle of the bending upper die is determined, the rotation angle of the lower die plate 62 can be automatically adjusted according to the inclination angle of the bending upper die, that is, the bending lower die can adapt to different types of bending upper dies, and the purpose of automatically changing the bending angle is achieved without adjusting the bending lower die, after the hydraulic telescopic rod moves upwards to return to the original position, the gear two 66 drives the gear one 65 to return to the original position under the elastic action of the torsional spring, and the lower die plate 62 returns to the original position;

[0088] The spacing between the support blocks 61 on the front and back sides corresponds to the die outlet width of the bending lower die, and the die outlet width of the bending lower die also needs to be determined according to the thickness of the plate, since the thickness of the plate is fixed in the application, the length of the lower die plate 62 in the front and back directions is long enough to ensure that the die outlet width of the bending lower die meets the die outlet width standard corresponding to the thickness of the plate after the plate reaches the target maximum bending angle, so that the bending lower die of the application can normally perform the bending work.

[0089] In the embodiment 6, the automatic control method of the hydraulic telescopic rod further includes that the controller controls the hydraulic telescopic rod to stop working according to the automatic control coefficient of the hydraulic telescopic rod calculated by the formula (2).

[0090]

[0091] Wherein, J is the automatic control coefficient of the hydraulic telescopic rod, and V is the length of the lower die plate 62 in the front and back directions.

[0092] The working principle of the above technical solution is as follows:

[0093] The automatic control coefficient of the hydraulic telescopic rod is the target feeding times of the bending upper die required by the target angle of the plate bending based on the bending lower die disclosed in Embodiment 6. The hydraulic telescopic rod is connected with the bending upper die as a whole, and the feeding amount of the two is the same every time. When the counter detection value and the automatic control coefficient of the hydraulic telescopic rod are the same, the controller controls the hydraulic telescopic rod to stop elongation, indicating that the plate has completed the target angle of bending. The die outlet width of the bending lower die disclosed in Embodiment 6 can be automatically adjusted. The control method of the hydraulic telescopic rod disclosed in Embodiment 7 can replace the control method of the hydraulic telescopic rod disclosed in Embodiment 5. Compared with the control method of the counter controlling the hydraulic telescopic rod through the controller disclosed in Embodiment 5, this embodiment does not need to provide the die outlet width of the bending lower die, further improving the automatic control effect of the hydraulic telescopic rod of the application, and facilitating the operation of the staff.

[0094] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A unit component of a hollow building panel, characterised in that: The unit component is formed by bending a complete plate, comprising a first panel portion (10), a second panel portion (20) and a core plate (30); The core plate (30) is connected with the inner end of the first panel portion (10) and the inner end of the second panel portion (20) through the first connecting flange portion (40) and the second connecting flange portion (50) respectively; the outer end of the first panel portion (10) and the outer end of the second panel portion (20) are formed with the first sewing flange (11) and the second sewing flange (21) which are bent inwardly; The first connecting flange portion (40) and the second connecting flange portion (50) comprise the first bending compound section (41) and the second bending compound section (51) which are inclined outwardly respectively; The first bending compound section (41) and the second bending compound section (51) correspond to the first sewing flange (11) and the second sewing flange (21) respectively, so as to facilitate the sewing and fixing between the unit components.

2. A unit component of a hollow building panel according to claim 1, characterised in that: The extension direction of the first panel portion (10) and the second panel portion (20) is kept parallel, and the extension direction of the core plate (30) is perpendicular to the extension direction of the first panel portion (10).

3. A unitary component for a hollow building panel according to claim 1, characterised in that: The first panel portion (10) and the second panel portion (20) extend obliquely to two sides respectively.

4. A unitized component of a hollow building panel according to claim 1, characterized in that: The first connecting flange portion (40) and the second connecting flange portion (50) further comprise the first folding accommodation inner recess (42) and the second folding accommodation inner recess (52) respectively; The first folding accommodation inner recess (42) is connected between the first bending compound section (41) and the first panel portion (10), and the second folding accommodation inner recess (52) is connected between the second bending compound section (51) and the second panel portion (20); The first folding accommodation inner recess (42) and the second folding accommodation inner recess (52) form the first folding accommodation groove and the second folding accommodation groove respectively, so as to accommodate the sewing flange; The depth of the first folding accommodation groove and the second folding accommodation groove is not less than 4 times of the thickness of the unit component plate.

5. A unitized component of a hollow building panel according to claim 1, characterized in that: The first panel portion (10) and the second panel portion (20) are symmetrically arranged.

6. A unitized component of a hollow building panel according to claim 1, wherein: The cross-sectional width (W1) of the first panel portion (10) is 1.3 to 1.9 times of the cross-sectional width ratio (W2) of the core plate (30).

7. A unitized component of a hollow building panel according to claim 1, wherein: The cross-sectional width (W3) of the first sewing flange (11) and the second sewing flange (21) is greater than one tenth of the cross-sectional width (W1) of the first panel portion (10).

8. A system for producing a unitary component of a hollow building panel as defined in claim 1, characterized by: The bending module comprises a bending upper die and a bending lower die, and different specifications of the bending upper die and the bending lower die are selected according to the target bending angle of the plate and the thickness of the plate; The lifting module is connected with the bending upper die in the bending module, and the lifting module comprises a hydraulic telescopic rod for driving the bending upper die to lift; The control module comprises a counter installed on the hydraulic telescopic rod, the counter is used for detecting the actual feeding times of the hydraulic telescopic rod, and the counter and the hydraulic telescopic rod are electrically connected with the controller; when the actual feeding times of the hydraulic telescopic rod are the same as the target feeding times of the bending upper die, the controller controls the hydraulic telescopic rod to stop elongation automatically. The target feeding times of the bending upper die are obtained through the following process:

9. A system for the production of a unitary component of a hollow building panel according to claim 8, characterised in that: ​ Step 1: determine the plate thickness, the target bending angle of the plate, the die outlet width of the bending lower die and the feeding amount of the bending upper die per feeding; Step 2: obtain the bending inner diameter of the plate after bending according to the die outlet width of the bending lower die; Step 3: obtain the bending arc length according to the bending inner diameter of the plate after bending; Step 4: obtain the target feeding times of the bending upper die from the bending arc length calculated in step 3 and the feeding amount of the bending upper die per feeding.

10. A system for the production of a unitary component of a hollow building panel according to claim 8, characterised in that: The bending lower die comprises a base (60), the upper end of the base (60) is symmetrically provided with a sliding groove on the left and right sides, a threaded rod (64) is rotatably arranged in the sliding groove, the thread segments on the front and rear sides of the threaded rod (64) are opposite in rotation direction, the front and rear sides of the threaded rod (64) are symmetrically provided with sliding blocks two (71), the upper end of the sliding blocks two (71) is fixedly connected with a supporting block (61), the ends of the supporting blocks (61) close to each other are rotatably connected with lower die plates (62), a connecting shaft (63) is rotatably arranged between the front and rear lower die plates (62), distance meters (80) are symmetrically arranged on the front and rear sides of the connecting shaft (63), a sliding block one (70) is fixedly connected to the lower end of the connecting shaft (63), the sliding block one (70) is slidably connected with the base (60), the rear side of the threaded rod (64) penetrates through the rear end of the sliding groove and is fixedly connected with a gear one (65), gear twos (66) are meshed between the left and right gear ones (65), the gear twos (66) are rotatably connected with the base (60) through rotating shafts, torsional springs are fixedly arranged between the gear twos (66) and the base (60), the torsional springs are sleeved on the rotating shafts, the upper sides of the gear twos (66) are meshed with a rack, the rack is fixedly connected with a matching block one (67), the matching block one (67) is slidably connected with the rear end of the base (60) in the left-right direction, the inclined section of the matching block one (67) is slidably connected with the inclined section of a matching block two (69), the matching block two (69) is slidably connected with the rear end of the base (60) in the up-down direction, the matching block two (69) is fixedly connected with a contact block (68), and the contact block (68) corresponds to a contact rod connected with a hydraulic telescopic rod.

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