Rolling forming assembly for producing warped tile, forming roller and tile die size design method

Abstract

The invention discloses a roll forming assembly for producing a warped tile, which is characterized in that a forming roller is improved into a shape with the longitudinal section being equal in side length, correspondingly, the upper surface of a tile die is an arc-shaped surface sunken towards the forming roller, and the forming roller and the tile die are rolled to form an arched warped tile. The invention further provides a forming roller and tile die size design method. The method comprises the steps that S1, the length L and the height H of the warping tile to be formed are determined; s2, the radius r of a circle where the warping tile is located is calculated according to the formula r = H / 2 + L ^ 2 / 8H; s3, according to a sine function formula, alpha is calculated, and a central angle n = 2alpha corresponding to the warping tile is obtained; s4, calculating the arc length S of the warping tile according to an arc length formula, wherein the arc length S is the side length of the square forming roller; and S5, verifying the feasibility of actual production. And S5, whether the forming roller and the tile die in the size meet the production requirements or not can be verified. The structural strength of the tile can be improved; the method is suitable for tile production industry.

Description

Technical Field

[0001] The invention belongs to the field of tile production, in particular to a rolling forming component for producing warped tiles and a forming roller and tile mold size design method. Background Art

[0002] Roof tiles can improve waterproof performance, protect the roof, and also look beautiful and tidy. The tiles currently laid are usually straight tiles. The production of such tiles depends on the structure of the roll forming machine head, straight tile mold, conveyor line, lower hopper, etc. The structure of the existing roll forming machine head is as follows Figure 1-3 As shown, it includes a chassis 11, a circular forming roller 13 and a feeding claw 12 rotatably arranged in the chassis 11, a bottom plate 15 and a wear-resistant lining plate 14. The transmission shaft 16 of the circular forming roller 13 extends from the chassis to connect to the motor, and the motor drives the circular forming roller 13 to rotate to achieve rolling. The structure of the linear tile mold 2 is shown in FIG. Figure 4 shown.

[0003] like Figure 5 As shown in FIG. 1 , the production process of the linear tile 5 is as follows: a plurality of linear tile molds 2 are sequentially arranged on the conveyor line 3 and transported from left to right to the roll forming head 1. A propeller is provided on the left side of the roll forming head 1 to help the linear tile molds 2 on the conveyor line 3 enter the roll forming head 1. The feed hopper 4 located above the roll forming head 1 discharges the semi-dry concrete raw materials. The feeding claws 12 in the roll forming head 1 are responsible for evenly dispersing the raw materials. The circular forming roller 13 rotates to roll the raw materials between the circular forming roller 13 and the linear tile mold 2, and finally forms the linear tile 5 as shown in FIG. Figure 6 The straight tile 5 shown is output from the right side of the roll forming machine head 1 together with the straight tile mold 2 .

[0004] However, when the straight-line tiles 5 are subjected to stress, the force will be concentrated on a certain part of the straight-line tiles 5, and the pressure cannot be effectively dispersed, so that the structural strength of the straight-line tiles 5 is low, which easily causes deformation or damage to the roof. Summary of the invention

[0005] In order to solve the above deficiencies in the prior art, the present invention aims to provide a rolling forming assembly for producing warping tiles and a forming roller and tile mold size design method, so as to achieve the purpose of improving the structural strength of the tile.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A roll forming assembly for producing warping tiles comprises a roll forming machine head and a tile mold matched with the roll forming machine head; the roll forming machine head comprises a bottom plate, a chassis fixedly arranged on the bottom plate, and a transmission shaft and a feeding shaft rotatably arranged on the chassis; the feeding shaft is arranged near the input end of the roll forming machine head, a plurality of feeding claws are fixedly arranged on the feeding shaft, the transmission shaft is arranged near the output end of the roll forming machine head, the transmission shaft passes through the side wall of the chassis, a forming roller is sleeved on the transmission shaft inside the chassis, a wear-resistant lining is arranged between the side wall of the chassis and the forming roller, the axial direction of the feeding shaft is parallel to the axial direction of the forming roller and both are perpendicular to the conveying direction of the tile mold, the rotation direction of the forming roller is matched with the conveying direction of the tile mold, and the longitudinal section of the forming roller is a shape with equal side lengths; the upper surface of the tile mold is an arc surface concave toward the forming roller, the arc length of the arc surface is matched with the side length of the forming roller, and the highest point of the arc surface corresponds to the midpoint of the side length of the forming roller.

[0008] As a limitation of the present invention: the longitudinal section of the forming roller is a square.

[0009] As another limitation of the present invention: the feeding claw comprises a plurality of connecting sleeves sleeved on the feeding shaft at intervals, each connecting sleeve is fixed with a stirring rod, and the stirring rods on two adjacent connecting sleeves are perpendicular to each other.

[0010] The present invention also provides a method for designing the dimensions of a forming roller and a tile mold, the method comprising the following steps:

[0011] S1. Determine the length L and height H of the arc-shaped warping tile to be formed;

[0012] S2. Calculate the radius r of the circle where the warping tile is located according to the formula r = H / 2 + L ^2 / 8H;

[0013] S3. According to the sine function formula sinα=L / 2r, α is calculated, and the central angle n=2α corresponding to the warping tile is known;

[0014] S4. According to the arc length formula S = nπr / 180, calculate the arc length S of the warping shoe, and the arc length S is the side length of the forming roller;

[0015] The arc length, length and height of the arc surface on the tile mold are equal to the arc length S, length L and height H of the warped tile.

[0016] As a further limitation of the present invention: it also includes,

[0017] S5. Verify the feasibility of actual production; Step S5 includes:

[0018] S51. Draw an inscribed circle on the longitudinal section of the forming roller, the center of the inscribed circle is the center point A of the forming roller;

[0019] S52. Connect point A with vertex C of the forming roller, and the line intersects the inscribed circle at point B;

[0020] S53. Calculate the length D of line AC according to the Pythagorean theorem;

[0021] S54. Calculate the distance between points B and C d = DS / 2, deviation β = Hd, and when β ≤ 2 mm, the feasibility of production is met.

[0022] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0023] (1) The present invention is an improvement on the forming roller and tile mold in the prior art. The specific improvement is that the longitudinal section of the forming roller is a shape with equal side lengths; accordingly, the upper surface of the tile mold is an arc-shaped surface that is concave toward the forming roller, and the arc length of the arc-shaped surface is adapted to the side length of the forming roller, and the highest point of the arc-shaped surface corresponds to the midpoint of the side length of the forming roller. During roll forming, a number of tile molds are sequentially arranged on the conveyor line and transported to the roll forming machine head. The forming roller rotates counterclockwise, and the tile mold moves from left to right. The right end of the tile mold first contacts one of the vertices of the forming roller, and then the edge of the forming roller contacts the tile mold. When the tile mold completely passes under the forming roller, the length of the arc-shaped surface of the tile mold corresponds to the length of one side length of the forming roller. The finally formed arched warping tile is output from the right end of the roll forming machine head together with the tile mold. The next tile mold is the same as the tile mold, thereby realizing mass production of warping tiles. When the middle of a single warping tile is stressed, the force can be dispersed to both ends of the single warping tile, so the warping tile can better disperse and withstand pressure, improve the structural strength of the tile, and effectively protect the roof;

[0024] (2) The present invention also provides a method for designing the dimensions of a forming roller and a tile mold, including the steps of S1. determining the length L and height H of the arc-shaped warping tile to be formed; S2. calculating the radius r of the circle where the warping tile is located according to the formula r=H / 2+L^2 / 8H; S3. calculating α according to the sine function formula, and knowing that the central angle n=2α corresponding to the warping tile; S4. calculating the arc length S of the warping tile according to the arc length formula, and the arc length S is the side length of the square forming roller; S5. verifying the feasibility of actual production. After steps S1-S4, the side length of the forming roller and the arc length, length, and height of the arc surface on the tile mold can be calculated; after step S5, it can be verified whether the forming roller and tile mold under this size meet the production requirements.

[0025] In summary, the present invention can improve the structural strength of tiles and is suitable for the tile production industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1It is a structural schematic diagram of a roll forming machine head in the prior art;

[0028] Figure 2 It is a schematic diagram of the structure of a circular forming roller in a roll forming machine head in the prior art;

[0029] Figure 3 It is a structural schematic diagram of the roll forming machine head of the prior art from another perspective;

[0030] Figure 4 It is a structural schematic diagram of a tile mold in the prior art;

[0031] Figure 5 It is a structural schematic diagram of a tile mold, a conveyor line, and a roll forming machine head in the prior art;

[0032] Figure 6 It is a structural schematic diagram of a linear tile in the prior art;

[0033] Figure 7 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0034] Figure 8 This is a schematic structural diagram of a square forming roller in Example 1 of the present invention;

[0035] Fig. 9 It is a schematic structural diagram of Embodiment 1 of the present invention from another viewing angle;

[0036] Fig.10 This is a schematic diagram of the structure of the feeding claw in Example 1 of the present invention;

[0037] Fig.11 It is a structural schematic diagram of the tile mold in Example 1 of the present invention;

[0038] Fig.12 This is a schematic diagram of the structure of the tile mold, the roll forming head, and the conveyor line in Example 1 of the present invention;

[0039] Fig.13 This is a schematic diagram of the structure of a warping tile formed in Example 1 of the present invention;

[0040] Fig.14 This is a schematic diagram of the structure of the circle where the warping tile is located in Example 2 of the present invention;

[0041] Fig.15 It is a structural schematic diagram of the longitudinal section of the square forming roller and its inscribed circle in Example 2 of the present invention.

[0042] In the figure: 1-roll forming machine head, 11-chassis, 12-feeding claw, 121-connecting sleeve, 122-stirring rod, 13-forming roller, 14-wear-resistant lining plate, 15-bottom plate, 16-transmission shaft, 17-feeding shaft;

[0043] 2-tile mold, 21-curved surface;

[0044] 3- conveyor line, 4- lower hopper, 5- straight tile, 6- warped tile. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and do not constitute a limitation of the present invention.

[0046] The directional terms or positional relationships such as "upper", "lower", "left", and "right" described in the embodiments are based on the figures in the specification of the present invention. Figure 5 The orientation relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the content protected by the present invention.

[0047] Example 1 Rolling forming components for producing warping tiles

[0048] like Figure 7 to Figure 13 As shown, this embodiment produces an arched warping tile 6 by changing the shapes of the forming roller 13 and the tile mold 2, thereby improving the structural strength of the tile.

[0049] This embodiment includes a roll forming machine head 1 and a shoe mold 2 matched with the roll forming machine head 1 .

[0050] like Figure 7-9 As shown, the roll forming machine head 1 includes a base plate 15 , a chassis 11 fixed on the base plate 15 , and a transmission shaft 16 and a feeding shaft 17 rotatably disposed on the chassis 11 .

[0051] The transmission shaft 16 is arranged near the output end of the roll-forming head 1, where the output end of the roll-forming head 1 refers to the right end of the roll-forming head 1. The transmission shaft 16 passes through the side wall of the chassis 11. A forming roller 13 is sleeved on the transmission shaft 16 located inside the chassis 11, and a wear-resistant lining 14 is arranged between the side wall of the chassis 11 and the forming roller 13.

[0052] The feeding shaft 17 is arranged near the input end of the roll forming machine head 1, where the input end of the roll forming machine head 1 refers to the left end of the roll forming machine head 1. A plurality of feeding claws 12 are fixedly arranged on the feeding shaft 17. Fig.10 As shown, the feeding claw 12 includes a plurality of connecting sleeves 121 which are spaced apart on the feeding shaft 17, and a stirring rod 122 is fixed on each connecting sleeve 121. The stirring rods 122 on two adjacent connecting sleeves 121 are perpendicular to each other. In other words, the axial direction of the stirring rod 122 on one of the connecting sleeves 121 is along the upward and downward directions, and the axial direction of the stirring rod 122 on another connecting sleeve 121 adjacent to the connecting sleeve 121 is along the left and right directions.

[0053] like Figure 7 , 12 As shown, the axial direction of the feeding shaft 17 is parallel to the axial direction of the forming roller 13 and is perpendicular to the conveying direction of the tile mold 2. In this embodiment, the tile mold 2 is Fig.12 The rotation direction of the forming roller 13 is adapted to the conveying direction of the tile mold 2. Adaptation here means that, for example, Figure 8 , 12 As shown, the forming roller 13 rotates counterclockwise, and the tile mold 2 is transported from left to right, and finally the raw material is rolled and formed.

[0054] The above parts are prior art and will not be described in detail in this embodiment.

[0055] The improvement in this embodiment is that, first, Figure 7-9 As shown, the longitudinal section of the forming roller 13 is a shape with equal sides; in this embodiment, the longitudinal section of the forming roller 13 is a square, but of course, it can also be designed as a regular hexagon or an equilateral triangle. Fig.11 , 12 As shown, the upper surface of the tile mold 2 is an arcuate surface 21 that is concave toward the forming roller 13, that is, the arcuate surface 21 is concave upward, and the arc length of the arcuate surface 21 is adapted to the side length of the forming roller 13. Here, adaptation means that the arc length of the arcuate surface 21 is equal to the side length of the forming roller 13. The highest point of the arcuate surface 21 corresponds to the midpoint of the side length of the forming roller 13. The bottom structure of the tile mold 2 is the same as the prior art and will not be described in detail here. The right end of the tile mold 2 is used to cooperate with the propeller on the left side of the roll forming machine head 1. The propeller assists the tile mold 2 to enter the roll forming machine head 1. The structure of the propeller is the prior art and will not be described in detail here.

[0056] During operation, several tile molds 2 are arranged in sequence on the upper edge of the conveyor line 3. Fig.12 Transport to the roll forming machine head 1 in the direction of the middle arrow. Fig.12 Only one tile mold 2 is shown as an illustration, and Fig.12 The middle tile mold 2 is enlarged. The lower hopper 4 discharges the semi-dry concrete raw materials, the feeding claw 12 is responsible for dispersing the raw materials evenly, and the square forming roller 13 moves along the Figure 8 The square forming roller 13 rotates counterclockwise in the direction of the middle arrow to roll the raw material between the square forming roller 13 and the tile mold 2. During the rotation of the square forming roller 13, one side corresponds to one tile mold 2. In other words, for one tile mold 2, the length of the arc surface 21 of the tile mold 2 is the side length of the square forming roller 13, and the highest point of the arc surface 21 corresponds to the midpoint of the side on the forming roller 13, and finally a product as shown in FIG. Fig.13 The warping tile 6 shown. It should be noted that the warping tile 6 has a certain thickness. Fig.13 For illustration only, the thickness is not shown.

[0057] The warping tile 6 formed by roll forming in this embodiment is arched, which can better disperse and withstand pressure, improve the structural strength of the tile, and achieve the effect of effectively protecting the roof.

[0058] Example 2: Design method for the size of forming roller and tile mold

[0059] This embodiment is used to design the size of the square forming roller and the tile mold in Embodiment 1. This embodiment includes the following steps:

[0060] S1. Determine the length L and height H of the arc-shaped warping tile 6 to be formed;

[0061] S2. According to the formula r = H / 2 + L ^2 / 8H, calculate the radius r of the circle where the warping tile 6 is located;

[0062] S3. According to the sine function formula sinα=L / 2r, α is calculated, and the central angle n=2α corresponding to the warping tile 6 is known;

[0063] S4. According to the arc length formula S = nπr / 180, the arc length S of the warping tile 6 is calculated, and the arc length S is the side length of the square forming roller 13;

[0064] like Fig.14 As shown, this embodiment is described by taking the length L=420 mm and the height H=99.3 mm of the warping tile 6 to be formed as an example:

[0065] According to step S2, r=99.3÷2+420^2÷(8×99.3)=271.7 mm is calculated; Fig.14 In order to facilitate observation of the warping tile 6, other parts on the circle where the warping tile 6 is located are indicated by dotted lines.

[0066] According to step S3 , it is calculated that sinα=420÷2÷271.7=0.77, α=50.35°, and the central angle n corresponding to the warping tile 6 is n=2α=100.7°.

[0067] According to step S4, the arc length of the warping shoe 6 is calculated to be S=nπr / 180=477 mm, that is, the side length of the square forming roller is 477 mm.

[0068] Correspondingly, the arc length, length and height of the arc surface on the tile mold are equal to the arc length S, length L and height H of the warping tile 6, that is, the arc length of the arc surface on the tile mold is 477mm, the length is 420mm and the height is 99.3mm.

[0069] According to the industry standard JC / T 746-2023, the allowable dimensional deviation should be less than or equal to 2. For this reason, this embodiment also includes step S5. Verifying the feasibility of actual production.

[0070] Step S5 specifically includes:

[0071] S51. Draw an inscribed circle on the longitudinal section of the square forming roller, such as Fig.15 As shown, the center of the inscribed circle is the center point A of the square forming roller;

[0072] S52. Connect point A and vertex C of the square forming roller, and the line intersects the inscribed circle at point B;

[0073] S53. Calculate the length D of line AC based on the Pythagorean theorem. D is also half the length of the diagonal of the square.

[0074] In this embodiment, 2×D^2=477^2mm, so D=337.3mm.

[0075] S54. Calculate the distance between points B and C d = DS / 2, deviation β = Hd, and when β ≤ 2 mm, the feasibility of production is met.

[0076] In this embodiment, d=337.3-477÷2mm=98.8mm.

[0077] β=Hd=99.3mm-98.8mm=0.5mm≤2mm, therefore, when the side length of the square forming roller is 477mm, the arc length of the arc surface on the tile mold is 477mm, the length is 420mm, and the height is 99.3mm, the warped tile 6 can be produced normally.

[0078] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roll forming assembly for producing warping tiles, comprising a roll forming head and a tile mold matched with the roll forming head; the roll forming head comprises a bottom plate, a chassis fixed on the bottom plate, and a transmission shaft and a feeding shaft rotatably arranged on the chassis; the feeding shaft is arranged near the input end of the roll forming head, a plurality of feeding claws are fixed on the feeding shaft, the transmission shaft is arranged near the output end of the roll forming head, the transmission shaft passes through the side wall of the chassis, a forming roller is sleeved on the transmission shaft located inside the chassis, a wear-resistant lining is arranged between the side wall of the chassis and the forming roller, the axial direction of the feeding shaft is parallel to the axial direction of the forming roller and both are perpendicular to the conveying direction of the tile mold, the rotation direction of the forming roller is adapted to the conveying direction of the tile mold, and is characterized in that: The longitudinal section of the forming roller is a shape with equal side lengths; the upper surface of the shoe mold is an arc surface concave toward the forming roller, the arc length of the arc surface is adapted to the side length of the forming roller, and the highest point of the arc surface corresponds to the midpoint of the side length of the forming roller.

2. The roll forming assembly for producing a warping tile according to claim 1, characterized in that: The longitudinal section of the forming roller is a square.

3. The roll forming assembly for producing warping tiles according to claim 1 or 2, characterized in that: The feeding claw comprises a plurality of connecting sleeves which are sleeved on the feeding shaft at intervals, each connecting sleeve is fixed with a stirring rod, and the stirring rods on two adjacent connecting sleeves are perpendicular to each other.

4. A method for designing the dimensions of a forming roller and a tile mold, used for designing a roll forming assembly for producing a warping tile as claimed in any one of claims 1 to 3, characterized in that: The method comprises the following steps: S1. Determine the length L and height H of the arc-shaped warping tile to be formed; S2. Calculate the radius r of the circle where the warping tile is located according to the formula r = H / 2 + L ^2 / 8H; S3. According to the sine function formula sinα=L / 2r, α is calculated, and the central angle n=2α corresponding to the warping tile is known; S4. According to the arc length formula S = nπr / 180, calculate the arc length S of the warping shoe, and the arc length S is the side length of the forming roller; The arc length, length and height of the arc surface on the tile mold are equal to the arc length S, length L and height H of the warped tile.

5. The method for designing the dimensions of forming rollers and shoe molds according to claim 4, characterized in that: Also includes, S5. Verify the feasibility of actual production; Step S5 includes: S51. Draw an inscribed circle on the longitudinal section of the forming roller, the center of the inscribed circle is the center point A of the forming roller; S52. Connect point A with vertex C of the forming roller, and the line intersects the inscribed circle at point B; S53. Calculate the length D of line AC according to the Pythagorean theorem; S54. Calculate the distance between points B and C d = DS / 2, deviation β = Hd, and when β ≤ 2 mm, the feasibility of production is met.

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