Corner corrugated plate forming device

Abstract

The invention relates to the technical field of forming devices, in particular to a corner corrugated plate forming device which comprises a first die frame, a second die frame, a female die, a male die and an edge pressing device. The second mold frame and the first mold frame are oppositely arranged; the female die is arranged on the first die frame and forms a first convex structure, and a groove-shaped structure is formed between the two convex structures; the male die is arranged on the second die frame, and a second convex structure is formed on the male die; the edge pressing device comprises a first edge pressing block and a second edge pressing block, and the first edge pressing block and the second edge pressing block are each provided with an inwards-concave structure. The corner corrugated plate forming device is simple in structure, convenient to operate and convenient for an operator to use, the forming process is completed at one station, and the production efficiency is improved; in the forming process, no female die makes contact with a plate to restrain the plate, the shape of the middle of the corner corrugated plate is novel, transition is gentle, deformation resistance is achieved, the thinning rate of a product is reduced, and the energy absorption performance of the shape of the middle is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of forming devices, and in particular to a corner corrugated plate forming device. Background Art

[0002] The storage of liquefied natural gas (hereinafter referred to as LNG) mostly requires large storage devices. At present, the multi-layer corrugated plates of the membrane-type LNG containment system need to maintain good sealing and deformation resistance, and the smoothness, smoothness, energy absorption and stability of the middle shape of the corner corrugated plates should meet the use requirements. The forming of the corner corrugated plates is mainly stamping, which has higher forming quality requirements for the corrugated plate formed parts.

[0003] At present, the forming device for 135° corner corrugated plates has the defects of complex structure and cumbersome operation. Moreover, after the stamping is completed at the first station, it is transferred to the next station for further processing, which poses safety risks to the operators, increases the manufacturing cycle of the formed parts, and has low efficiency. Summary of the invention

[0004] The present invention provides a corner corrugated plate forming device, which is used to solve the defects of the forming device in the prior art, such as complex structure, cumbersome operation, safety risks for operators, increased forming part manufacturing cycle and low efficiency.

[0005] The present invention provides a corner corrugated plate forming device, comprising: The first mold frame; A second mold frame is arranged opposite to the first mold frame in the height direction; A concave mold is provided on the first mold frame, and two ends of the concave mold respectively form first convex structures with set angles, and a groove structure is formed between the two convex structures; A male mold is provided on the second mold frame, and a mold surface portion of the male mold forms a second outer convex structure with a set angle; The edge clamping device is arranged on the second mold frame through an elastic mechanism, and the edge clamping device includes: a first edge clamping block and a second edge clamping block, and the first edge clamping block is arranged on one side of the punch, and the second edge clamping block is arranged on the other side of the punch, and the first edge clamping block and the second edge clamping block are respectively formed with a concave structure adapted to the first convex structure.

[0006] According to the corner corrugated plate forming device provided by the present invention, the projection line of the first convex structure on the plane defined by the longitudinal direction and the height direction is a convex shape with a set angle, and the intersection of the two lines is an arc transition; The groove structure is a non-penetrating rectangular groove with a circular arc transition extending from the first convex structure on a plane defined by the transverse direction and the longitudinal direction; A circular arc groove symmetrical about a plane defined by a transverse direction and a height direction is arranged near the center of the rectangular groove, and the connection portion between the circular arc groove, the first convex structure and the rectangular groove that does not penetrate is a rounded transition.

[0007] According to the corner corrugated plate forming device provided by the present invention, the projection lines of the concave structures of the first edge clamp block and the second edge clamp block on the plane defined by the longitudinal direction and the height direction are concave shapes with a set angle, and the intersection of the two lines is an arc transition.

[0008] The corner corrugated plate forming device provided by the present invention further includes: a plurality of positioning blocks; At least two positioning blocks are disposed on the first side surface of the first edge pressing block or the second edge pressing block, at least one positioning block is disposed on the second side surface of the first edge pressing block and the second edge pressing block, respectively, and the first side surface and the second side surface are adjacent right-angled side surfaces; Each of the positioning blocks protrudes from the mold surface of the first edge pressing block or the second edge pressing block in the height direction.

[0009] According to the corner corrugated plate forming device provided by the present invention, the convex mold comprises: a first convex mold, a second convex mold and a third convex mold; The first punch and the third punch are arranged radially symmetrically about a plane defined by the second punch in the longitudinal direction and the height direction, and the die surfaces are both in an outwardly convex arch shape, and the projection angle of the die surfaces of the first punch and the third punch on the plane defined by the longitudinal direction and the height direction is the set angle; The die surface of the second convex die is an arc convex surface.

[0010] The corner corrugated plate forming device provided according to the present invention also includes: a first guiding device, which is arranged on the second mold frame and is connected and / or in contact with the first edge clamping block and the second edge clamping block, and is used to guide the moving direction of the first edge clamping block and the second edge clamping block.

[0011] According to the corner corrugated plate forming device provided by the present invention, the first guide device comprises: A fixing plate, one end of which is disposed on the second mold frame and is located on one side of the first edge clamping block or the second edge clamping block; A self-lubricating guide plate is provided on the fixed plate, and the self-lubricating guide plate is in contact with the first edge pressing block or the second edge pressing block on the opposite side of the self-lubricating guide plate connected to the fixed plate; A bushing, provided on the second mold frame; A stripping screw, wherein the rod of the stripping screw is inserted into the bushing and transitionally matched with the bushing, and the threaded portion of the stripping screw is connected to the threaded hole of the first edge clamping block and / or the second edge clamping block.

[0012] The corner corrugated plate forming device provided according to the present invention further includes: a second guiding device, which is arranged between the first mold frame and the second mold frame and is used to guide the relative movement direction of the first mold frame and the second mold frame.

[0013] According to the corner corrugated plate forming device provided by the present invention, the second guide device comprises: A plurality of guide posts, one end of which is connected to the second mold frame; A plurality of guide sleeves have one end connected to the first mold frame and the other end transitionally matched with the other end of the guide column.

[0014] The corner corrugated plate forming device provided by the present invention further comprises: a frame, which is arranged on the second mold frame; The frame is formed into a mesh structure by a plurality of transverse ribs and a plurality of longitudinal ribs. The punch is arranged on the longitudinal rib close to the center position in the transverse direction, and the bushing is arranged on the transverse rib far from the center position in the longitudinal direction.

[0015] The present invention provides a corner corrugated plate forming device, which comprises: a first mold frame, a second mold frame, a concave mold, a convex mold and a pressure device. The second mold frame is arranged relative to the first mold frame in the height direction; the concave mold is arranged on the first mold frame, and the two ends of the concave mold respectively form a first convex structure of a set angle, and a groove structure is formed between the two convex structures; the convex mold is arranged on the second mold frame, and the mold surface part of the convex mold forms a second convex structure of a set angle; the pressure device is arranged on the second mold frame through an elastic mechanism, and the pressure device comprises: a first pressure block and a second pressure block, and the first pressure block is arranged on one side of the convex mold, and the second pressure block is arranged on the other side of the convex mold, and the first pressure block and the second pressure block are respectively formed with a concave structure adapted to the first convex structure. The present invention provides a corner corrugated plate forming device, which has a simple structure, is easy to operate, and is convenient for operators to use. Moreover, the device can complete the above-mentioned forming process in one workstation, thereby greatly improving production efficiency. At the same time, due to the presence of the groove structure, there is no die at the position where the punch is located to contact the sheet material to form a constraint on it during forming, so that the middle shape of the produced corner corrugated plate is novel, the transition is smooth, it has a certain anti-deformation ability, and reduces the thinning rate of the product to a certain extent. At the same time, due to the irregularity of the middle shape, the energy absorption of the middle shape is also enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a perspective view of the corner corrugated plate forming device provided by the present invention; Figure 2 is a perspective view of the first die holder provided by the present invention; Figure 3 is a perspective view of the female die provided by the present invention; Figure 4 is a perspective view of the first blank holder provided by the present invention; Figure 5 is a perspective view of the second blank holder provided by the present invention; Figure 6 is a perspective view of the second die holder provided by the present invention; Figure 7 is a perspective view of the positioning block provided by the present invention; Figure 8 is a perspective view of the connecting plate provided by the present invention; Fig. 9 is a perspective view of the fixing plate provided by the present invention; Fig.10 is a perspective view of the installation relationship between the first guiding device and the punch provided by the present invention; Fig.11 is a perspective view of the bushing and the stripping screw provided by the present invention; Fig.12 is a perspective view of the first punch provided by the present invention; Fig.13 is a perspective view of the second punch provided by the present invention; Fig.14 is a perspective view of the third punch provided by the present invention; Fig.15 is a perspective view of the installation relationship between the nitrogen spring and the fixing block provided by the present invention.

[0018] Reference numerals: 1, female die; 2, first die holder; 3, second die holder; 6, positioning block; 7, second guiding device; 8, first guiding device; 91, first screw; 92, second screw; 93, third screw; 94, fourth screw; 95, fifth screw; 10, cylindrical pin; 11, flat key; 12, spacer block; 13, lifting hook; 31, rectangular parallelepiped plate-like structure; 32, "field"-shaped reticular structure frame; 321, first horizontal rib; 322, second horizontal rib; 323, third horizontal rib; 324, first vertical rib; 325, second vertical rib; 326, third vertical rib; 41, first punch; 42, second punch; 43, third punch; 51, first blank holder; 52, second blank holder; 53, stripping screw; 54, nitrogen spring; 55, fixing block; 56, connecting plate; 71. Guide column; 72. Guide sleeve; 81. Guide plate guide structure; 82. Unloading screw guide structure; 811. Fixed plate; 812. Self-lubricating guide plate; 821. Bushing. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0023] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Combine the following Figure 1-Figure 15 (For the convenience of description, the D1 direction in the figure is the longitudinal direction of the device, the D2 direction is the transverse direction, and the D3 direction is the height direction. The above directions are only schematic representations and are not structural limitations of the device.) A corner corrugated plate forming device of the present invention is described. The corner corrugated plate forming device includes: a first mold frame 2, a second mold frame 3, a concave mold 1, a convex mold, and a pressing device.

[0025] Among them, the second mold frame 3 and the first mold frame 2 are arranged opposite to each other in the height direction; the die 1 is arranged on the first mold frame 2, and the two ends of the die 1 respectively form a first convex structure with a set angle, and a groove structure is formed between the two convex structures; the punch is arranged on the second mold frame 3, and the mold surface part of the punch forms a second convex structure with a set angle; the edge clamping device is arranged on the second mold frame 3 through an elastic mechanism, and the edge clamping device includes: a first edge clamping block 51 and a second edge clamping block 52, and the first edge clamping block 51 is arranged on one side of the punch, and the second edge clamping block 52 is arranged on the other side of the punch, and the first edge clamping block 51 and the second edge clamping block 52 are respectively formed with an inner concave structure adapted to the first convex structure.

[0026] Specifically, the first mold frame 2 is the upper mold frame, the second mold frame 3 is the lower mold frame opposite thereto, the concave mold 1 is installed on the bottom surface of the first mold frame 2, the punch can be installed on the top surface of the second mold frame 3 through the elastic mechanism on the frame, and the first edge clamping block 51 and the second edge clamping block 52 are respectively installed on both sides of the punch.

[0027] The first convex structures at both ends of the die 1 correspond to the first edge clamp block 51 and the second edge clamp block, respectively, and the groove structure in the middle corresponds to the position of the punch. The first convex structure and the concave structure process the stainless steel sheet into a specific angle during the forming process; at the same time, due to the existence of the groove structure, there is no die 1 at the position of the punch to contact the sheet to constrain it during forming, so that the middle shape of the corner corrugated plate produced is novel, the transition is smooth, and it has a certain anti-deformation ability, and reduces the thinning rate of the product to a certain extent. At the same time, due to the irregularity of the middle shape, the energy absorption of the middle shape is also enhanced.

[0028] Furthermore, the first convex structure, the second convex structure and the concave structure are all designed and processed to the same specific angle, so as to perform the processing of the corner corrugated plate. The corner corrugated plate forming device of the embodiment of the present invention can be used for the forming of 135° corner corrugated plates. Therefore, the first convex structure, the second convex structure and the concave structure are all 135°.

[0029] During the processing and forming process, the stainless steel plate is placed on the first edge clamping block 51 and the second edge clamping block 52, and an external force is applied to the first mold frame 2 through a pressure device to drive the die 1 to descend, and the stainless steel plate fits with the pressing surfaces of the die 1, the first edge clamping block 51 and the second edge clamping block 52, so that the stainless steel plate is folded from a plane into a specific angle (in this embodiment, the stainless steel plate is folded into 135°); the die 1 continues to move downward with the pressure equipment until the stainless steel plate fits with the die 1 and the punch surface, completing the forming of the stainless steel corner corrugated plate.

[0030] The present invention provides a corner corrugated plate forming device, which comprises: a first mold frame 2, a second mold frame 3, a die 1, a punch and a pressure device. The second mold frame 3 is arranged relative to the first mold frame 2 in the height direction; the die 1 is arranged on the first mold frame 2, and the two ends of the die 1 respectively form a first convex structure of a set angle, and a groove structure is formed between the two convex structures; the punch is arranged on the second mold frame 3, and the die surface of the punch forms a second convex structure of a set angle; the pressure device is arranged on the second mold frame 3 through an elastic mechanism, and the pressure device comprises: a first pressure block 51 and a second pressure block 52, and the first pressure block 51 is arranged on one side of the punch, and the second pressure block 52 is arranged on the other side of the punch, and the first pressure block 51 and the second pressure block 52 are respectively formed with a concave structure adapted to the first convex structure. The present invention provides a corner corrugated plate forming device, which has a simple structure, is easy to operate, and is convenient for operators to use. Moreover, the device can complete the above-mentioned forming process at one workstation, greatly improving production efficiency. At the same time, due to the existence of the groove structure, there is no die 1 at the position where the punch is located to contact the sheet material to form a constraint on it during forming, so that the middle shape of the produced corner corrugated plate is novel, the transition is smooth, it has a certain anti-deformation ability, and reduces the thinning rate of the product to a certain extent. At the same time, due to the irregularity of the middle shape, the energy absorption of the middle shape is also enhanced.

[0031] In one embodiment of the present invention, Figure 2As shown, the first mold frame 2 is a rectangular structure with a total of 8 countersunk holes, 2 of which are arranged at the center line position and 6 countersunk holes are symmetrically arranged outside the center position. The lower surface of the first mold frame 2 is hoisted by the first screw 91 to form the die 1, wherein the mounting surface of the first mold frame 2 is arranged with a pin hole and a keyway, and is positioned by a cylindrical pin 10 and a flat key 11; on the two lateral sides, two U-shaped grooves are symmetrically arranged along the lateral center line; four circular through holes are symmetrically arranged at the four corners of the first mold frame 2 for matching installation with the guide sleeve 72, and the guide sleeve 72 and the circular through hole are interference fit.

[0032] In one embodiment of the present invention, the projection line of the first convex structure on the plane defined by the longitudinal direction and the height direction is a convex shape with a set angle, and the intersection of the two lines is an arc transition. The groove structure is a non-penetrating rectangular sink with an arc transition extending from the first convex structure on the plane defined by the transverse direction and the longitudinal direction. A circular arc sink symmetrically about the plane defined by the transverse direction and the height direction is arranged near the center of the rectangular sink, and the connection part between the circular arc sink and the first convex structure and the non-penetrating rectangular sink is a rounded transition.

[0033] Specifically, if Figure 3 As shown, the die 1 is an integral component, fixed on the first mold frame 2, and a total of 8 threaded holes are arranged on the installation surface, 2 of which are arranged at the center line position, and 6 countersunk holes are arranged symmetrically outside the center position; a total of 1 pin hole and 1 keyway are arranged, and 2 rectangular grooves penetrating in the height direction are arranged on a longitudinal side surface, and the two rectangular grooves are symmetrical about the plane defined by the die 1 in the transverse direction and the height direction; the projection line of the die surface of the die 1 on the plane defined by the longitudinal direction and the height direction is an outward convex shape with an angle of 135° between the two lines, and the intersection of the two lines is rounded; on the plane defined by the transverse direction and the longitudinal direction of the die 1, there is arranged a non-penetrating rectangular sink groove with an arc starting from the die 1 surface; in the middle position of the die surface, there is arranged an arc sink groove symmetrical about the plane defined by the transverse direction and the height direction; wherein, the arc sink groove surface has a rounded transition with the die surface and the non-penetrating rectangular sink groove part.

[0034] In one embodiment of the present invention, the projection lines of the concave structures of the first edge clamping block 51 and the second edge clamping block 52 on the plane defined by the longitudinal direction and the height direction are concave shapes with a set angle, and the intersection of the two lines is an arc transition.

[0035] Specifically, if Figure 4-5 and Fig.15As shown, the first edge clamping block 51 and the second edge clamping block 52 are both concave in form, and the concave structure is the clamping surface, and the projection line angle of the material surfaces of the two edge clamping blocks on the plane defined by the longitudinal direction and the height direction of the edge clamping blocks is 135°; the material clamping surfaces of the two edge clamping blocks are terminated at a platform part in the longitudinal and height extension directions, and the rounded corners between the material clamping surface and the platform part have a smooth transition; the opposite sides of the material clamping surfaces of the two edge clamping blocks are respectively provided with 4 threaded holes symmetrical about the transverse center line and the longitudinal symmetry line of the material clamping blocks; at the same time, the opposite sides of the material clamping surfaces of the two edge clamping blocks are respectively provided with 2 stepped blind holes symmetrical about the transverse center line of the material clamping blocks, which are used to avoid the cylinder of the elastic mechanism during the compression process. Let; the bottom end of the cylinder of the elastic mechanism is fixed to the fixed block 55 by screws, and the fixed block 55 is fixed to the welding part of the second mold frame 3 by screws; the first edge clamping block 51 and the second edge clamping block 52 are connected by two connecting plates 56; the connecting plate 56 is a rectangular structure, and two countersunk holes are arranged at its two ends along the transverse direction and on the center line respectively; the connecting plate 56 is fixed to the two edge clamping blocks respectively by the fifth screw 95; below the countersunk hole of the connecting plate 56, a metal sheet with a through hole with a diameter larger than the screw diameter is arranged to avoid the connecting plate 56 from contacting the side surfaces of the first punch and the third punch during the movement of the first edge clamping block 51 and the second edge clamping block 52, thereby preventing the mold from being scratched.

[0036] Among them, the first edge clamping block 51 is arranged with 4 threaded holes on a transverse surface after installation, 2 of which are arranged side by side in the transverse direction, and the other 2 are arranged side by side in the height direction; on the other transverse surface, 2 threaded holes are arranged in the transverse direction for installing and fixing the connecting plate 56.

[0037] Among them, after installation, the second edge clamping block 52 is also arranged with four threaded holes on a transverse plane that is coplanar with the transverse plane on which the first edge clamping block 51 is arranged with four threaded holes, two of which are arranged side by side in the transverse direction, and the other two are arranged side by side in the height direction; on another transverse plane that is coplanar with the transverse plane on which the first edge clamping block 51 is arranged with two threaded holes, there are two threaded holes arranged in the transverse direction; after installation, the second edge clamping block 52 is arranged with two rectangular grooves penetrating in the height direction on the outer side surface perpendicular to the transverse plane on which the four threaded holes are arranged, and two threaded holes are arranged on the center lines of the two rectangular grooves respectively; wherein the two rectangular grooves and the threaded holes located in the rectangular grooves are symmetrical about the plane defined by the transverse direction and the height direction of the second edge clamping block 52.

[0038] like Figure 1 , Figure 4 and Figure 5 As shown, after installation, the threaded holes of the first edge clamping block 51 and the second edge clamping block 52 arranged in the transverse plane are mirror-symmetrical about the second mold frame 3 in the plane defined by the longitudinal direction and the height direction.

[0039] In one embodiment of the present invention, the corner corrugated plate forming device further includes: a plurality of positioning blocks 6. At least two positioning blocks 6 are provided on the first side of the first edge clamp block 51 or the second edge clamp block 52, and at least one positioning block 6 is provided on the second side of the first edge clamp block 51 and the second edge clamp block 52, respectively, and the first side and the second side are adjacent right-angled sides; each positioning block 6 protrudes from the mold surface of the first edge clamp block 51 or the second edge clamp block 52 in the height direction. Specifically, a rectangular right-angle limiting structure is formed by installing a plurality of positioning blocks 6 on the first edge clamp block 51 and the second edge clamp block 52, and the stainless steel plate is attached to the right-angle limiting structure to position the initial position of the stainless steel plate. Preferably, the positioning blocks 6 can be correspondingly embedded in the rectangular grooves of the first edge clamp block 51 and the second edge clamp block 52.

[0040] Preferably, if Figure 7 As shown, the positioning block 6 is a cuboid structure with missing corners, and two countersunk holes are arranged along the length direction; wherein, the positioning block 6 is fixed to the side of the edge clamping block by screws; wherein, one is arranged on one side surface of the first edge clamping block 51, one is arranged on the side surface of the second edge clamping block 52 which is coplanar with the installation side surface of the first edge clamping block 51 after installation, and two are arranged on the outer side surface perpendicular to the installation side surface of the second edge clamping block 52; the installation surfaces of the four positioning blocks 6 can determine a right angle area, which is used to locate the initial position of the stainless steel plate.

[0041] In one embodiment of the present invention, the punch comprises: a first punch 41, a second punch 42 and a third punch 43. The first punch 41 and the third punch 43 are arranged radially symmetrically with respect to the plane defined by the second punch 42 in the longitudinal direction and the height direction, and the die surfaces are both in an outward convex arch shape, and the projection angle of the die surfaces of the first punch 41 and the third punch 43 on the plane defined by the longitudinal direction and the height direction is a set angle; the die surface of the second punch 42 is an arc convex surface.

[0042] Specifically, if Figure 12-14 and Fig.10As shown, the punch is a split structure, including a first punch 41, a second punch 42 and a third punch 43, all of which are fixed on the second longitudinal rib 325 of the frame; wherein the first punch 41 and the third punch 43 have the same structure, the die surface is an outward convex arch, and the mounting surface is arranged with 4 threaded holes, 1 pin hole and 1 keyway; the second punch 42 has a rectangular flange area at the bottom and an arc solid at the top, and 4 threaded holes and 2 pin holes are arranged on the mounting surface; wherein the first punch 41 and the third punch The mold 43 is positioned by pins and keys, fixed by 4 screws, and installed in a mirror-symmetrical arrangement with respect to the plane defined by the second mold frame 3 in the longitudinal direction and the height direction, and fixed on both sides of the second longitudinal rib 325; the second punch 42 is positioned by 2 pins, fixed by 4 screws, and installed in the middle position of the second longitudinal rib 325; wherein, after installation, the projection line angle between the mold surfaces of the first punch 41 and the third punch 43 on the plane defined by the second mold frame 3 in the longitudinal direction and the height direction is 135°.

[0043] Preferably, the edges of the mold surfaces of the first punch 41 , the second punch 42 and the third punch 43 have smooth transitions with the rounded corners of the side surfaces.

[0044] In one embodiment of the present invention, the corner corrugated plate forming device also includes: a first guiding device 8, which is arranged on the second mold frame 3 and is connected and / or in contact with the first edge clamping block 51 and the second edge clamping block 52, and is used to guide the moving direction of the first edge clamping block 51 and the second edge clamping block 52.

[0045] In one embodiment of the present invention, the first guide device 8 includes: a fixed plate 811 and a self-lubricating guide plate 812, which constitute a guide plate guide structure 81. One end of the fixed plate 811 is arranged on the second mold frame 3 and is located on one side of the first edge clamping block 51 or the second edge clamping block 52; the self-lubricating guide plate 812 is arranged on the fixed plate 811, and the self-lubricating guide plate 812 contacts the first edge clamping block 51 or the second edge clamping block 52 on the opposite side of the fixed plate 811.

[0046] Specifically, if Figure 8-11 As shown, the fixed plate 811 is a stepped solid structure with four countersunk holes symmetrically arranged along the center line in the height direction, and two threaded holes arranged on the center line, and is fixed to the second mold frame 3 by four fourth screws 94; the self-lubricating guide plate 812 has two countersunk holes and is fixed to the fixed plate 811 by two screws; wherein, the back side of the mounting surface of the self-lubricating guide plate 812 contacts the outer longitudinal planes of the first edge clamping block 51 and the second edge clamping block 52, and plays a guiding role during the movement of the edge clamping blocks.

[0047] In one embodiment of the present invention, the first guiding device 8 includes a bushing 821 and a stripper screw 53, which constitute a stripper screw guiding structure 82. The bushing 821 is provided on the second die carrier 3; the rod portion of the stripper screw 53 is inserted into the bushing 821 and is in transitional fit with the bushing 821, and the threaded portion of the stripper screw 53 is connected to the threaded holes of the first blank-holding block 51 and / or the second blank-holding block 52.

[0048] Specifically, as Fig.10 and Fig.11 shown, the bushing 821 is a rotating cylindrical member with a flange edge, and is in interference fit with the counterbore holes installed on the first cross rib 321 and the third cross rib 323 of the framework; wherein, the rod portion of the stripper screw 53 passes through the center of the bushing 821, and the threaded portion is in fit with the threaded holes arranged on the blank-holding surface of the first blank-holding block 51 and the blank-holding surface of the second blank-holding block 52, and there is a transitional fit between the stripper screw 53 and the bushing 821.

[0049] In one embodiment of the present invention, the corner corrugated plate forming device further includes a second guiding device 7, which is provided between the first die carrier 2 and the second die carrier 3 and is used to guide the relative movement direction of the first die carrier 2 and the second die carrier 3.

[0050] In one embodiment of the present invention, the second guiding device 7 includes a plurality of guide posts 71 and a plurality of guide sleeves 72. One end of the plurality of guide posts 71 is connected to the second die carrier 3; one end of the plurality of guide sleeves 72 is connected to the first die carrier 2, and the other end is in transitional fit with the other end of the guide post 71.

[0051] Specifically, both the guide post 71 and the guide sleeve 72 are rotating bodies; wherein, the guide post 71 is a bar and is in interference fit on the second die carrier 3; the guide sleeve 72 is a pipe and is in interference fit on the first die carrier 2, and there is a transitional fit between the guide post 71 and the guide sleeve 72.

[0052] In one embodiment of the present invention, the corner corrugated plate forming device further includes a framework, which is provided on the second die carrier 3. The framework is formed by a plurality of cross ribs and a plurality of longitudinal ribs into a net structure, and the punch is provided on the longitudinal rib close to the central position in the transverse direction, and the bushing 821 is provided on the cross rib far from the central position in the longitudinal direction.

[0053] Preferably, the framework is formed by three cross ribs and three longitudinal ribs into a "field"-shaped net structure frame 32, and the whole is welded at the central position of the rectangular plate-like structure 31 of the second die carrier 3.

[0054] As Figure 1 and Figure 6As shown in the figure, the cuboid plate-like structure 31 is symmetrically arranged with 4 U-shaped grooves along the transverse center line on both transverse sides for connecting the device to the lower working surface of the pressure equipment; 4 circular through holes are symmetrically arranged at the centers of the 4 corners; along the transverse center line, 6 counterbored holes for fixing the spacer block 12 and 4 threaded holes for fixing the lifting hook 13 are symmetrically arranged on both sides respectively for mating installation with the guide pillar 71, wherein an interference fit is provided between the guide pillar 71 and the circular through hole. Among them, the spacer block 12 is fixed by the second screw 92, and the lifting hook 13 is fixed by the third screw 93.

[0055] In the 4 "square" - shaped areas surrounded by the "field" - shaped reticular structure frame 32, a rectangular sunk groove with an arc at the corner is arranged respectively. Among them, the plate for installing and fixing the elastic mechanism (preferably using the nitrogen spring 54) is located at the bottom of the sunk groove; at the bottom of the sunk groove, 4 threaded holes symmetrically arranged about the center of the rectangular sunk groove are arranged for installing and fixing the plate of the nitrogen spring 54; among them, the positions of the 4 arc - rectangular sunk grooves are centered about the cuboid plate - like structure 31; the "field" - shaped reticular structure frame 32 is formed by welding. After welding, the whole includes three transverse ribs (i.e., the first transverse rib 321, the second transverse rib 322, and the third transverse rib 323) and three longitudinal ribs (i.e., the first longitudinal rib 324, the second longitudinal rib 325, and the third longitudinal rib 326). Among them, the widths of the three transverse ribs are equal, the widths of the left and right longitudinal ribs are equal, and the second longitudinal rib 325 is the widest among the six ribs; among them, 8 threaded through - holes symmetrically arranged about the center line are arranged on the outer surfaces of the left and right longitudinal ribs for fixing the plate of the self - lubricating guide plate 812; and the left and right longitudinal ribs are symmetric about the plane mirror surface defined by the longitudinal direction and the height direction of the cuboid plate - like structure 31, and the upper and lower transverse ribs are mirror - symmetric about the plane defined by the transverse direction and the longitudinal direction of the cuboid plate - like structure 31; the second longitudinal rib 325 is symmetric about the longitudinal center line of the cuboid plate - like structure 31, and the second transverse rib 322 is symmetric about the transverse center line of the cuboid plate - like structure 31; on the upper and lower transverse ribs, 4 counterbored holes symmetrically arranged about the cuboid plate - like structure 31 are arranged respectively, penetrating through the cuboid plate - like structure 31; among them, an interference fit is provided between the small - diameter part of the counterbored hole and the bushing 821, and a space is left for the sliding of the unloading screw 53 in the large - diameter part of the counterbored hole; on the second longitudinal rib 325, 8 large counterbored holes symmetrically arranged about the transverse center line of the cuboid plate - like structure 31 are arranged for fixing the first punch 41 and the third punch 43; 4 small counterbored holes are arranged for fixing the second punch 42; 2 pin holes and 2 flat - key grooves are provided for positioning the first punch 41 and the third punch 43; among them, the flat key plays a role in balancing the lateral force; and 2 pin holes symmetrically arranged about the cuboid plate - like structure 31 are arranged for positioning the second punch 42.

[0056] Based on the structure of the above - mentioned embodiments of the device, its working principle is as follows: The rectangular sheet is placed on the upper platform of the first edge clamping block 51 and the second edge clamping block 52, with the right-angle side close to the positioning block 6 as the positioning side, and the sheet is placed close to the installation surface of the positioning block 6 to complete the positioning.

[0057] After installation, the top of the positioning block 6 is 5-10 mm higher than the highest points of the first edge clamping block 51 and the second edge clamping block 52 .

[0058] In the mold open state, the top of the self-lubricating guide plate 812 is 5-10mm higher than the face of the first edge clamp block 51 and the second edge clamp block 52; the length of the rod of the selected unloading screw 53 is shorter than the total length of the nitrogen spring 54 in the free state; that is, after installation, the nitrogen spring 54 is in a compressed pre-tightened state; the first punch 41 and the second punch 42, the third punch 43 and the second punch 42 are at a limited distance, and after installation, the projection line angle of the first punch 41 and the third punch 43 mold surface on the plane defined by the second mold frame 3 in the longitudinal direction and the height direction is 135°; wherein, the intersection position of the projection extension line is lower than the second punch 42 in the plane defined by the second mold frame 3 in the longitudinal direction and the height direction. A certain distance from the highest point of the projection on the plane limited by the direction; during the movement of the forming device, the die 1 moves downward with the work surface on the pressure equipment to complete the fitting of the stainless steel plate with the die surface of the die 1 and the pressing surfaces of the first edge clamp block 51 and the second edge clamp block 52, and the stainless steel plate is folded from a plane to 135°; the die 1 continues to move downward with the work surface on the pressure equipment until the stainless steel plate is fitted with the die surfaces of the die 1, the first punch 41 and the third punch 43 to complete the forming of the stainless steel corner corrugated plate; it should be noted that: during the movement of the forming device, the back surfaces of the pressing surfaces of the first edge clamp block 51 and the second edge clamp block 52 are in contact with the upper surface of the second mold frame 3, that is, the mold closing state of the forming device is reached.

[0059] It can be seen that the corner corrugated plate forming device provided by the present invention has simple forming operation and is convenient for the operator to use. The device can complete the forming process at one station, which greatly improves the production efficiency. At the same time, when forming, there is no die 1 at the position where the second punch 42 is located to contact the sheet material to form a constraint on it, so that the middle shape of the produced corner corrugated plate is novel, the transition is smooth, and it can have a certain anti-deformation ability; and the thinning rate of the product is reduced to a certain extent. At the same time, due to the irregularity of the middle shape, the energy absorption of the middle shape is also enhanced. This forming adopts a total of 3 guide devices (i.e., positioning block 6, first guide device 8 and second guide device 7), which greatly improves the stability of the device operation, ensures the consistency of the product in size and quality, and the accuracy of operation; the second mold frame 3 is a semi-enclosed box shell structure welded part, which is innovative in form and stable in structure, further improving the stability and service life of this device. This forming structure is reasonable, and the production efficiency is improved to a certain extent.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A corner corrugated plate forming device, characterized in that: include: A first mold frame (2); A second mold frame (3) arranged opposite to the first mold frame (2) in a height direction; A concave mold (1) is arranged on the first mold frame (2), with two ends of the concave mold (1) respectively forming a first convex structure with a set angle, and a groove structure is formed between the two convex structures; A male mold is arranged on the second mold frame (3), and a mold surface portion of the male mold is formed with a second outer convex structure of a set angle; A edge clamping device is arranged on the second mold frame (3) through an elastic mechanism, and the edge clamping device comprises: a first edge clamping block (51) and a second edge clamping block (52), wherein the first edge clamping block (51) is arranged on one side of the punch, and the second edge clamping block (52) is arranged on the other side of the punch, and the first edge clamping block (51) and the second edge clamping block (52) are respectively formed with an inner concave structure adapted to the first outer convex structure.

2. The corner corrugated plate forming device according to claim 1, characterized in that: The projection line of the first convex structure on the plane defined by the longitudinal direction and the height direction is a convex shape with a set angle, and the intersection of the two lines is an arc transition; The groove structure is a non-penetrating rectangular groove with a circular arc transition extending from the first convex structure on a plane defined by the transverse direction and the longitudinal direction; A circular arc groove symmetrical about a plane defined by a transverse direction and a height direction is arranged near the center of the rectangular groove, and the connection portion between the circular arc groove, the first convex structure and the rectangular groove that does not penetrate is a rounded transition.

3. The corner corrugated plate forming device according to claim 2, characterized in that: The projection lines of the concave structures of the first edge clamping block (51) and the second edge clamping block (52) on the plane defined by the longitudinal direction and the height direction are concave shapes with a set angle, and the intersection of the two lines is an arc transition.

4. The corner corrugated plate forming device according to claim 2, characterized in that: Also includes: A plurality of positioning blocks (6); At least two positioning blocks (6) are arranged on the first side surface of the first edge pressing block (51) or the second edge pressing block (52), at least one positioning block (6) is arranged on the second side surface of the first edge pressing block (51) and the second edge pressing block (52), respectively, and the first side surface and the second side surface are adjacent right-angled side surfaces; Each of the positioning blocks (6) protrudes from the mold surface of the first edge pressing block (51) or the second edge pressing block (52) in the height direction.

5. The corner corrugated plate forming device according to claim 1, characterized in that: The punch comprises: a first punch (41), a second punch (42) and a third punch (43); The first punch (41) and the third punch (43) are arranged radially symmetrically with respect to a plane defined by the second punch (42) in the longitudinal direction and the height direction, and the die surfaces are both in an outwardly convex arch shape, and the projection angle of the die surfaces of the first punch (41) and the third punch (43) on the plane defined by the longitudinal direction and the height direction is the set angle; The die surface of the second convex die (42) is an arc convex surface.

6. The corner corrugated plate forming device according to any one of claims 1 to 5, characterized in that: Also includes: A first guiding device (8) is provided on the second mold frame (3) and is connected to and / or in contact with the first edge clamping block (51) and the second edge clamping block (52), and is used to guide the moving direction of the first edge clamping block (51) and the second edge clamping block (52).

7. The corner corrugated plate forming device according to claim 6, characterized in that: The first guiding device (8) comprises: A fixed plate (811), one end of which is disposed on the second mold frame (3) and is located on one side of the first edge clamping block (51) or the second edge clamping block (52); A self-lubricating guide plate (812) is provided on the fixed plate (811), and the self-lubricating guide plate (812) is in contact with the first edge pressing block (51) or the second edge pressing block (52) on a side opposite to the side connected to the fixed plate (811); A bushing (821) is provided on the second mold frame (3); A stripping screw (53), wherein the rod portion of the stripping screw (53) is inserted into the bushing (821) and transitionally fits with the bushing (821), and the threaded portion of the stripping screw (53) is connected to the threaded hole of the first edge clamping block (51) and / or the second edge clamping block (52).

8. The corner corrugated plate forming device according to any one of claims 1 to 5, characterized in that: Also includes: The second guiding device (7) is arranged between the first mold frame (2) and the second mold frame (3) and is used to guide the relative movement direction of the first mold frame (2) and the second mold frame (3).

9. The corner corrugated plate forming device according to claim 8, characterized in that: The second guiding device (7) comprises: A plurality of guide pillars (71), one end of which is connected to the second mold frame (3); A plurality of guide sleeves (72), one end of which is connected to the first mold frame (2), and the other end of which is transitionally matched with the other end of the guide column (71).

10. The corner corrugated plate forming device according to claim 7, characterized in that: It also includes: a frame, arranged on the second mold frame (3); The frame is formed into a mesh structure by a plurality of transverse ribs and a plurality of longitudinal ribs, the punch is arranged on the longitudinal rib close to the center position in the transverse direction, and the bushing (821) is arranged on the transverse rib far from the center position in the longitudinal direction.

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