An anti-explosion sheet roll forming device and process

Abstract

This invention discloses a roll forming apparatus and process for explosion-proof discs, used to extrude and form explosion-proof disc markings on a strip. The apparatus includes a frame, a first roll forming mechanism and a second roll forming mechanism rotatably mounted on the frame. A forming space is formed between the first and second roll forming mechanisms for the strip to pass through. The height of the forming space is adapted to the thickness of the strip. A marking forming part protruding from the outer surface of the first roll forming mechanism is formed. The marking forming part cooperates with the second roll forming mechanism to extrude the strip to form markings on the strip. Compared with the prior art, this invention forms explosion-proof disc markings on the strip by roll forming, resulting in low impact force, good stability, and high consistency after marking formation.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof sheet forming technology, and in particular to an explosion-proof sheet roll forming device and process. Background Technology

[0002] With the rapid development of new energy vehicles, the industry's demand for power batteries continues to increase. Explosion-proof sheets, as a crucial component of power batteries, play a vital role in battery safety. Traditional explosion-proof sheets are typically formed through two stamping processes: first, stamping the material strip into the required shape; second, stamping grooves into the stamped sheet. Due to the thinness of the explosion-proof sheet, the stamping precision for the grooves is high. If the grooves are larger than the design dimensions, the explosion-proof sheet cannot break and release pressure in time when the internal pressure of the power battery rises, leading to a reduction in the safety of the power battery. Conversely, if the grooves are smaller than the design dimensions, the explosion-proof sheet will break before the designed internal pressure is reached, thus affecting the normal use of the power battery.

[0003] Existing stamping equipment typically uses mechanical or hydraulically driven dies when stamping and marking. At the moment of stamping, a strong impact force is generated on the surface of the explosion-proof sheet. On the one hand, this can easily lead to local deformation or even cracking of the explosion-proof sheet material, resulting in a decrease in the yield of the explosion-proof sheet and an inability to guarantee its safety performance. On the other hand, the impact force causes the machine to vibrate, which in turn reduces the forming accuracy of the marking. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a roll forming device and process for explosion-proof sheets, so as to solve the problems of poor forming accuracy and low safety of the scoring in the prior art.

[0005] To achieve the above objectives, one technical solution of the present invention provides a roll forming device for extruding and forming explosion-proof disc markings on a strip. The device includes a frame, a first roll forming mechanism and a second roll forming mechanism rotatably mounted on the frame, a forming space for the strip to pass through being formed between the first and second roll forming mechanisms, the height of which is adapted to the thickness of the strip, and a marking forming portion protruding from the outer surface of the first roll forming mechanism. The marking forming portion cooperates with the second roll forming mechanism to extrude the strip and form markings on it.

[0006] Furthermore, the frame includes a base plate and a first side plate and a second side plate erected on the base plate and disposed opposite to each other;

[0007] The first roller pressing mechanism includes a forming roller shaft rotatably disposed between the first side plate and the second side plate, an extrusion ring body circumferentially disposed on the outer peripheral surface of the forming roller shaft, and at least one scoring assembly disposed on the extrusion ring body. The extrusion ring body is radially protruding from the outer peripheral surface of the forming roller shaft. The scoring forming part includes at least one scoring ridge formed on the scoring assembly. The scoring ridge protrudes from the outer surface of the scoring assembly and protrudes towards the forming space when the extrusion ring body rotates to the corresponding position.

[0008] Furthermore, the outer circumferential surface of the extrusion ring is radially recessed with a mounting groove corresponding to the scoring assembly, and the scoring assembly is detachably installed in the mounting groove;

[0009] The scoring assembly includes a fixing block detachably installed in the mounting groove and a plurality of scoring inserts selectively embedded in the fixing block. The outer surfaces of the fixing block and the scoring inserts are both defined as arc surfaces coaxial with the extrusion ring body, and the radii of curvature of the outer surfaces of the fixing block and the scoring inserts are adapted to the radius of curvature of the extrusion ring body, so that the outer surfaces of the fixing block and the scoring inserts together with the outer surface of the extrusion ring body form a closed circumferential surface. The scoring protrusions radially protrude from the outer surface of the scoring insert. When the forming roller rotates, the scoring protrusions periodically squeeze the material strip to form scoring on the material strip.

[0010] Furthermore, the height of the ridge protruding radially from the outer side of the ridge insert for each ridge insert gradually increases or decreases to change the forming depth of the ridge.

[0011] Furthermore, the fixing block has a radially penetrating groove at the position corresponding to the engraved insert, and the inner side of the fixing block has an insert recessed platform corresponding to the outer edge of the insert groove. The engraved insert conforms to the shape of the insert groove and is fitted into the insert groove. The inner side of the engraved insert has a protruding limiting protrusion at the position corresponding to the insert recessed platform, which cooperates with the insert recessed platform. The engraved insert is fitted into the insert groove from the inside to the outside, so that the limiting protrusion abuts against and limits the position within the insert recessed platform.

[0012] Furthermore, the second roller pressing mechanism is defined as a support roller shaft rotatably disposed between the first side plate and the second side plate, the support roller shaft rotating in the opposite direction to the forming roller shaft, and the outer peripheral surface of the support roller shaft and the outer peripheral surface of the extrusion ring forming the forming space at a distance.

[0013] Furthermore, a first adjustment groove is provided on the first side plate, and a first main adjustment block and a first auxiliary adjustment block are slidably arranged in the first adjustment groove along the arrangement direction of the forming roller shaft and the support roller shaft. A second adjustment groove is provided on the second side plate, and a second main adjustment block corresponding to the first main adjustment block and a second auxiliary adjustment block corresponding to the first auxiliary adjustment block are slidably arranged in the second adjustment groove. The two ends of the forming roller shaft are respectively rotatably arranged in the first main adjustment block and the second main adjustment block through the first bearing. The two ends of the support roller shaft are respectively rotatably arranged in the first auxiliary adjustment block and the second auxiliary adjustment block through the second bearing.

[0014] The explosion-proof sheet roll forming device further includes a first fine-tuning component disposed in the first adjusting groove and supported between the first main adjusting block and the first auxiliary adjusting block, and a second fine-tuning component disposed in the second adjusting groove and supported between the second main adjusting block and the second auxiliary adjusting block;

[0015] The first and second fine-tuning components each include a plurality of fine-tuning pads that can be selectively supported between the corresponding main adjustment block and the secondary adjustment block. The height of each fine-tuning pad gradually decreases or increases along the arrangement direction of the forming roller shaft and the support roller shaft, so as to change the distance between the forming roller shaft and the support roller shaft, thereby reducing or increasing the height of the forming space.

[0016] Furthermore, it also includes a locking mechanism supported on the frame; the locking mechanism includes a pressure plate supported on the first side plate and the second side plate, a first locking member adjustablely passing through the pressure plate and corresponding to one side of the first side plate and abutting against the first main adjusting block or the first auxiliary adjusting block, and a second locking member adjustablely passing through the pressure plate and corresponding to one side of the second side plate and abutting against the second main adjusting block or the second auxiliary adjusting block.

[0017] Furthermore, it also includes a first driving mechanism for driving the first roller pressing mechanism to rotate and a second driving mechanism for driving the second roller pressing mechanism to rotate in the opposite direction relative to the first roller pressing mechanism. The first driving mechanism is fixedly connected to one end of the first roller pressing mechanism, and the second driving mechanism is fixedly connected to one end of the second roller pressing mechanism.

[0018] To achieve the above objectives, another technical solution of the present invention provides a roll forming process for explosion-proof discs, which uses the explosion-proof disc roll forming device described above to form explosion-proof discs. The forming process includes the following steps:

[0019] The strip is passed through the forming space between the first and second roller pressing mechanisms and supported on the second roller pressing mechanism.

[0020] The first and second roller pressing mechanisms are controlled to rotate and drive the material belt to be conveyed, or the material belt is controlled to be conveyed along the traction direction and drive the first and second roller pressing mechanisms to rotate, so that the scoring forming part and the second roller pressing mechanism squeeze the material belt to form explosion-proof scoring on the material belt. The conveying speed of the material belt is adapted to the rotation speed of the first and second roller pressing mechanisms.

[0021] This invention features a forming roller and a support roller, with a forming space between them. The material strip is conveyed through this space, and under the rotational cooperation of the forming and support rollers, the material strip is extruded to form grooves. The forming process results in minimal impact on the material strip, and the grooves exhibit good stability and high consistency. By controlling the reverse rotation of the forming and support rollers, friction between the extrusion ring and the support roller on the material strip is reduced, lowering the risk of strip wear and improving the forming quality of the explosion-proof sheet. Furthermore, by arranging the forming and support rollers into cylindrical structures, the material strip maintains near-line contact with the extrusion ring and support roller during conveying, resulting in a small contact area. This further reduces friction between the extrusion ring and the support roller, thereby further reducing the risk of strip wear and improving the forming quality of the explosion-proof sheet.

[0022] In addition, the present invention also provides multiple scoring inserts with different sizes of scoring protrusions. By replacing scoring inserts of different sizes, it can adapt to the rolling of scoring with different depths. Furthermore, the scoring inserts are provided with limiting protrusions, which cooperate with the insert countersunk platform set on the fixed block for positioning. The scoring inserts can be quickly replaced simply by unscrewing the bolts between the fixed block and the mounting groove, which is convenient and simple. At the same time, by setting a main adjustment block and a secondary adjustment block, and setting a fine adjustment component between the main adjustment block and the secondary adjustment block, the distance between the forming roller shaft and the support roller shaft in the height direction can be adjusted to adjust the height of the forming space, thereby adapting to the processing of strips of different thicknesses and having a wide range of applications. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a strip structure with grooves (the length of the grooves extends along the traction direction) obtained by the explosion-proof sheet roll forming device of the present invention.

[0024] Figure 2 This is a schematic diagram of a strip structure with grooves (the width of the grooves extends along the traction direction) obtained by the explosion-proof sheet roll forming device of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of an explosion-proof sheet roll forming device according to an embodiment of the present invention.

[0026] Figure 4 for Figure 3 The main view.

[0027] Figure 5 for Figure 3 Top view.

[0028] Figure 6 for Figure 5 The view of AA.

[0029] Figure 7 for Figure 4 Enlarged view of point B in the middle.

[0030] Figure 8 This is an assembly drawing of the frame, main adjusting block, and auxiliary adjusting block.

[0031] Figure 9 This is a schematic diagram of the first roller pressing mechanism.

[0032] Figure 10 This is an exploded view of the first roller pressing mechanism.

[0033] Figure 11 This is an exploded view of the notched component.

[0034] Figure 12 This is a diagram showing the usage state of the explosion-proof sheet roll forming device of the present invention when forming the material strip.

[0035] The diagrams in the instruction manual are labeled as follows:

[0036] Material strip 100, scoring 110;

[0037] Frame 200, base plate 210, first groove 211, first side plate 220, first adjustment groove 221, first main adjustment block 222, first auxiliary adjustment block 223, second side plate 230, second adjustment groove 231, second main adjustment block 232, second auxiliary adjustment block 233;

[0038] The components include: a first roller pressing mechanism 300, a forming roller shaft 310, a first bearing 311, an extrusion ring 320, a mounting groove 321, a second threaded hole 322, a fixing block 331, a first threaded hole 3311, an inlay groove 3312, an insert countersunk platform 3313, a scored insert 332, a limiting protrusion 3321, a scored forming part 340, and a scored protrusion 341.

[0039] Second roller pressing mechanism 400, support roller shaft 410, second bearing 411;

[0040] Molding space 500;

[0041] First drive mechanism 610, second drive mechanism 620;

[0042] First fine-tuning component 710, second fine-tuning component 720, fine-tuning pad 730

[0043] Locking mechanism 800, pressure plate 810, second groove 811, third threaded hole 812, first locking element 820, second locking element 830. Detailed Implementation

[0044] The following detailed description illustrates the specific implementation method:

[0045] Example

[0046] Please refer to Figure 1 and Figure 2 This is a schematic diagram of a strip 100 with explosion-proof disc markings 110 (hereinafter referred to as markings 110) formed by the explosion-proof disc roll forming device of the present invention. Several markings 110 are periodically formed on the strip 100 along the traction direction of the strip 100. During forming, the markings 110 can be as follows: Figure 1 The notches 110 shown are arranged such that their lengths extend along the traction direction of the strip 100, that is, the lengths of the notches 110 are parallel to the traction direction of the strip 100. Alternatively, they can be arranged as follows: Figure 2 The width of the slits 110 shown is arranged in such a way that they extend along the traction direction of the strip 100, that is, the length of the slits 110 is perpendicular to the traction direction of the strip 100.

[0047] Please refer to Figures 3 to 7 An embodiment of the present invention provides a roll forming apparatus for extruding and forming explosion-proof disc markings 110 on a strip 100. The strip 100 is pre-wound on a strip support (not shown). During roll forming, the strip 100 is conveyed along the traction direction (i.e., the Y-axis direction below), and the explosion-proof disc markings 110 are formed by periodic roll forming on the strip 100 by the explosion-proof disc roll forming apparatus. For ease of understanding of the present invention, ... Figure 3 Taking the view direction shown as an example, the X-axis direction is defined as the length direction of the explosion-proof sheet roll forming device, with the left and right sides on both sides of the length direction. The Y-axis direction is defined as the width direction of the explosion-proof sheet roll forming device, with the front and rear sides on both sides of the width direction. The Z-axis direction is defined as the height direction of the explosion-proof sheet roll forming device, with the top and bottom sides on both sides of the height direction.

[0048] The explosion-proof sheet roll forming device includes a frame 200, a first roll forming mechanism 300 and a second roll forming mechanism 400 rotatably mounted on the frame 200. The first roll forming mechanism 300 is arranged above the second roll forming mechanism 400 in the height direction. There is a gap between the first roll forming mechanism 300 and the second roll forming mechanism 400 in the height direction to form a forming space 500. The height of the forming space 500 is adapted to the thickness of the strip 100. The free end of the strip 100 passes into the forming space 500 and is conveyed in the traction direction. When the material belt 100 is conveyed along the traction direction, it can be conveyed under the traction of the traction device, or under the squeezing or friction of the first roller pressing mechanism 300 and the second roller pressing mechanism 400. When the material belt 100 is conveyed under the squeezing or friction of the first roller pressing mechanism 300 and the second roller pressing mechanism 400, the rotation directions of the first roller pressing mechanism 300 and the second roller pressing mechanism 400 are relatively opposite to each other to ensure that the material belt 100 can be conveyed. Depending on the setting position of the traction device or the rotation direction of the first roller pressing mechanism 300 and the second roller pressing mechanism 400, the material belt 100 can be conveyed from front to back in the Y-axis direction or from back to front. In this embodiment, the traction direction is the direction from back to front in the width direction (i.e., the Y-axis direction). Meanwhile, the traction direction is defined as the tangential direction of the first roller pressing mechanism 300 and the second roller pressing mechanism 400. With this configuration, the contact between the first roller pressing mechanism 300 and the second roller pressing mechanism 400 and the material strip 100 can be regarded as line contact or narrow surface contact, so as to reduce the friction between the first roller pressing mechanism 300 and the second roller pressing mechanism 400 and the material strip 100, thereby reducing the risk of the surface of the material strip 100 being scratched and ensuring the consistency of the explosion-proof sheet forming.

[0049] The first roller pressing mechanism 300 has a scoring forming part 340 protruding from its outer surface. The scoring forming part 340 protrudes into the forming space 500 as needed, and after contacting the material strip 100, it cooperates with the second roller pressing mechanism 400 to compress the material strip and form a score 110. In this embodiment, when forming the score 110, the first roller pressing mechanism 300 serves as the main forming component of the score 110. During the transmission of the material strip 100, the first roller pressing mechanism 300 rotates clockwise or counterclockwise to drive the scoring forming part 340 to form the score 110 on the material strip 100. The second roller pressing mechanism 400 serves as the auxiliary forming component of the score 110. It rotates in the opposite direction to the first roller pressing mechanism 300 to cooperate with the scoring forming part 340 to compress the material strip 100, ensuring the stable forming of the score 110.

[0050] In this embodiment, the first roller pressing mechanism 300 is arranged above the second roller pressing mechanism 400. Thus, the second roller pressing mechanism 400 can provide support for the material strip 100, ensuring the consistency of the direction of the material strip 100 when it is conveyed forward, so that the position of the notch 110 on the material strip 100 is consistent, thereby ensuring the consistency of subsequent processes and improving the forming accuracy of the explosion-proof sheet. It is understood that in some other embodiments, the first roller pressing mechanism 300 can also be arranged below the second roller pressing mechanism 400, so as to achieve the purpose of consistent conveying direction of the material strip 100 by supporting the material strip 100 through the first roller pressing mechanism 300. Or in some other embodiments, depending on the different traction directions of the material strip 100, the first roller pressing mechanism 300 and the second roller pressing mechanism 400 can also be arranged along the width direction or along the length direction, etc.

[0051] Please refer to Figure 8 The frame 200 includes a base plate 210 and a first side plate 220 and a second side plate 230 erected on the base plate 210 and arranged opposite to each other. The first side plate 220 and the second side plate 230 are respectively disposed at both ends of the base plate 210 along the length direction. The first roller pressing mechanism 300 and the second roller pressing mechanism 400 are both rotatably disposed between the first side plate 220 and the second side plate 230. The upper surface of the base plate 210 is provided with a first groove 211 at the position corresponding to the first side plate 220 and the second side plate 230. The first side plate 220 and the second side plate 230 are erected in the first groove 211 on the corresponding side and are detachably fixed by bolts, buckles, tenon and mortise structures, etc., so as to increase the stability of the connection between the first side plate 220 and the second side plate 230 and the base plate 210 and avoid the first side plate 220 and the second side plate 230 from shifting left and right and affecting the stability of the entire device.

[0052] Please refer to Figure 9 and Figure 10The first roller pressing mechanism 300 includes a forming roller shaft 310 rotatably disposed between the first side plate 220 and the second side plate 230, an extrusion ring 320 circumferentially disposed around the outer peripheral surface of the forming roller shaft 310, and at least one scoring assembly disposed on the extrusion ring 320. The scoring forming part 340 is formed on the scoring assembly. The outer peripheral surface of the extrusion ring 320 is spaced apart from the corresponding position of the second roller pressing mechanism 400 to form the forming space 500. When the forming roller shaft 310 rotates, it drives the extrusion ring 320 and the scoring assembly to rotate synchronously, so that the scoring assembly periodically contacts the material strip 100, thereby causing the scoring forming part 340 to cooperate with the second roller pressing mechanism 400 to extrude the material strip 100, thereby forming a score 110 on the material strip 100. In this embodiment, the forming roller 310 has an overall shaft structure, and the outer periphery of the extrusion ring 320 is a perfect circle. The outer periphery of the extrusion ring 320 and the outer periphery of the scoring assembly are on the same circumferential surface. The traction direction is tangent to the outer periphery of the extrusion ring 320 and the outer surface of the scoring assembly, so that the contact between the upper surface of the material strip 100 and the extrusion ring 320 and the scoring assembly is approximately a line contact, thereby reducing the friction of the extrusion ring 320 and the scoring assembly on the upper surface of the material strip 100 and reducing the risk of damage to the upper surface of the material strip 100.

[0053] In this embodiment, the scoring component is detachably embedded in the extrusion ring 320 to facilitate the assembly and disassembly of the scoring component, and then a scoring component with a suitable scoring forming part 340 can be selected as needed to adapt to the roll forming of scoring 110 of different depths. Specifically, the extrusion ring 320 protrudes radially from the outer circumferential surface of the forming roller 310. Thus, a mounting groove 321 corresponding to the scoring assembly can be radially recessed on the outer circumferential surface of the extrusion ring 320, allowing the scoring assembly to be detachably installed within the mounting groove 321. The two ends of the mounting groove 321 in the length direction (i.e., the axial direction of the forming roller 310) correspondingly penetrate the left and right sides of the extrusion ring 320. When the scoring assembly is installed within the corresponding mounting groove 321, both ends of the scoring assembly in the length direction can protrude from the mounting groove 321, facilitating the operator's gripping of the scoring assembly during assembly and disassembly, thereby improving the efficiency of assembly and disassembly. In practice, the installation method of the scoring assembly and the mounting groove 321 can be any detachable installation method that enables quick assembly and disassembly of the scoring assembly, such as threads, snaps, or tenons. In this embodiment, the extrusion ring 320 is provided with a plurality of evenly distributed mounting grooves 321 along the circumference. Each mounting groove 321 is provided with a corresponding scoring component, and each scoring component is provided with a scoring forming part 340. In this way, when the forming roller 310 drives the extrusion ring 320 to rotate one revolution, a plurality of scoring 110 can be formed on the strip 100 to improve the forming efficiency of scoring 110.

[0054] Understandably, in some other embodiments, the scoring assembly may also be integrally formed on the extrusion ring 320 for forming scoring 110 of a fixed depth, or the first roller pressing mechanism 300 may be replaced as a whole to achieve scoring 110 of different depths.

[0055] Please refer to Figure 11 The scoring assembly includes a fixing block 331 detachably mounted in the mounting groove 321 and a plurality of scoring inserts 332. The scoring forming part 340 is formed on the outer side of the scoring insert 332. The outer side of the fixing block 331 and the outer side of the scoring insert 332 are both defined as arc surfaces coaxial with the extrusion ring 320. The radius of curvature of the outer side of the fixing block 331 and the outer side of the scoring insert 332 is adapted to the radius of curvature of the extrusion ring 320, so that the outer side of the fixing block 331 and the outer side of the scoring insert 332 and the outer side of the extrusion ring 320 together form a closed circumferential surface. When the forming roller shaft 310 rotates, the outer circumferential surface of the extrusion ring 320 and the outer side of the fixing block 331 and the scoring insert 332 can make smooth and full contact with the upper surface of the strip 100, avoiding the formation of scratches or damage to the strip 100.

[0056] The fixing block 331 is detachably installed in the mounting groove 321 by means of threads, snaps, tenons, etc. In this embodiment, considering the forming efficiency of the fixing block 331 and the mounting groove 321, the fixing block 331 is installed by a threaded connection. Specifically, the fixing block 331 is provided with a plurality of stepped first threaded holes 3311. The mounting groove 321 is provided with a second threaded hole 322 coaxial with the first threaded hole 3311 at the corresponding position. When the engraved insert 332 is installed in the fixing block 331, the fixing block 331 and the engraved insert 332 are installed together in the mounting groove 321 so that the first threaded hole 3311 and the second threaded hole 322 are aligned. The fixing block 331 is then screwed into the first threaded hole 3311 and the second threaded hole 322 by bolts to fix the fixing block 331 to the mounting groove 321. The fixing block 331 has a radially penetrating groove 3312 at the position corresponding to the engraved insert 332. The inner side of the fixing block 331 is recessed with an insert countersunk 3313 corresponding to the outer edge of the insert groove 3312. The engraved insert 332 is shaped to fit the insert groove 3312. The engraved insert 332 is fitted into the insert groove 3312 radially from the inside to the outside and is limited by the insert countersunk 3313, so that the engraved insert 332 will not fall out of the fixing block 331 after the fixing block 331 is fixed to the mounting groove 321.

[0057] In this embodiment, the inlay groove 3312 has a strip-shaped structure, and the length of the inlay groove 3312 extends along the circumference of the fixing block 331. Only one inlay groove 3312 is provided in the axial direction of the fixing block 331 so as to embed a grooved insert 332 on a fixing block 331. This facilitates the rapid forming of the fixing block 331 and reduces the impact of multiple inlay grooves 3312 on the hardness of the fixing block 331 after grooving. Understandably, in some other embodiments, when the circumferential dimension of the fixing block 331 is sufficient, multiple circumferentially distributed inlay grooves 3312 can also be formed on the fixing block 331, or when the axial dimension of the fixing block 331 is sufficient, multiple axially distributed inlay grooves 3312 can also be formed on the fixing block 331. As long as there is sufficient gap between each inlay groove 3312 to ensure the hardness of the fixing block 331, multiple grooved inserts 332 can be embedded on the same fixing block 331. Thus, when replacing the grooved inserts 332, only the fixing block 331 needs to be disassembled and reassembled once to complete the replacement of multiple grooved inserts 332, thereby improving the replacement efficiency.

[0058] The notching forming part 340 includes at least one notching ridge 341 formed on the notching assembly. In this embodiment, the notching ridge 341 is formed on the notching insert 332. When the forming roller 310 carries the notching insert 332 to the forming space 500, the notching ridge 341 protrudes into the forming space 500. The front sides of the fixing block 331 and the notching insert 332 contact the upper surface of the strip 100. Since the notching ridge 341 protrudes from the front sides of the fixing block 331 and the notching insert 332, the notching ridge 341 can press the upper surface of the strip 100 to form notches 110 on the strip 100. Specifically, each notching insert 332 may have one or more notching ridges 341 formed on it. The length of the notching ridge 341 extends circumferentially along the notching insert 332 to form notches 110 on the strip 100. Figure 1 The notch 110 shown; or the notch ridge 341 extends along the axial direction of the notch insert 332 to form a notch on the strip 100 as shown. Figure 2 The notch 110 is shown. It is understood that in some other embodiments, multiple notches 110 can be formed simultaneously by providing multiple notch protrusions 341 or multiple notch inserts 332 along the axial direction on the notch insert 332, thereby forming multiple rows of notches 110 on the strip 100, which can effectively improve the utilization rate of the strip 100 and reduce the scrap rate of the strip 100.

[0059] In this embodiment, the height of the etched protrusion 341 corresponding to each etched insert 332 protruding radially from the outer side of the etched insert 332 gradually increases or decreases. That is, multiple etched inserts 332 correspond to multiple etched protrusions 341 of different heights. In this way, multiple etched inserts 332 can be selectively embedded in the fixing block 331 according to the depth of the formed etch 110, so as to change the forming depth of the etch 110 and meet the forming requirements of explosion-proof sheets of different specifications. The inner side of the engraved insert 332 is provided with a limiting protrusion 3321 that cooperates with the insert recess 3313 at the position of the insert recess 3313. The engraved insert 332 is embedded in the inlay groove 3312 from the inside to the outside, so that the limiting protrusion 3321 abuts against and is limited in the insert recess 3313. In this way, when the fixing block 331 is installed in the mounting groove 321, the limiting protrusion 3321 can be limited between the mounting groove 321 and the insert recess 3313 to fix the engraved insert 332. When it is necessary to replace the engraved insert 332 of a different size, since the engraved insert 332 and the fixing block 331 are not fixed by any structure, when the fixing block 331 is removed from the mounting groove 321, the engraved insert 332 can be quickly separated from the fixing block 331 and replaced.

[0060] Please refer to Figure 3 The second roller pressing mechanism 400 is defined as a support roller shaft 410 rotatably disposed between the first side plate 220 and the second side plate 230. The outer peripheral surface of the support roller shaft 410 and the outer peripheral surface of the extrusion ring 320 are spaced apart to form the forming space 500. When the material strip 100 is conveyed along the traction direction, it can be supported on the support roller shaft 410 to ensure that the scoring insert 332 can cooperate with the support roller shaft 410 to form the scoring 110 after contacting the material strip 100. The support roller shaft 410 rotates in the opposite direction to the forming roller shaft 310 to ensure that the material strip 100 can be conveyed from back to front in the traction direction and to reduce the wear between the material strip 100 and the support roller shaft 410 and the extrusion ring 320. In this embodiment, the support roller shaft 410 is generally shaft-shaped, and the traction direction is tangent to the outer peripheral surface of the support roller shaft 410, so that the contact between the lower surface of the material belt 100 and the support roller shaft 410 is approximately line contact, thereby reducing the friction of the support roller shaft 410 on the lower surface of the material belt 100 and reducing the risk of damage to the lower surface of the material belt 100.

[0061] To drive the first roller pressing mechanism 300 and the second roller pressing mechanism 400, this embodiment also includes a first driving mechanism 610 for driving the first roller pressing mechanism 300 to rotate and a second driving mechanism 620 for driving the second roller pressing mechanism 400 to rotate in the opposite direction or in a reverse periodic manner relative to the first roller pressing mechanism 300. The first driving mechanism 610 and the second driving mechanism 620 can drive the first roller pressing mechanism 300 and the second roller pressing mechanism 400 to rotate automatically and / or manually. When the first roller pressing mechanism 300 and the second roller pressing mechanism 400 rotate, they are preferably rotating synchronously and at the same speed to prevent the material belt 100 from slipping and reduce the wear of the material belt 100.

[0062] When the first drive mechanism 610 and the second drive mechanism 620 are implemented in an automatic mode, the first drive mechanism 610 and the second drive mechanism 620 are respectively implemented by a first drive motor (not shown) and a second drive motor (not shown). The output shaft of the first drive motor is fixedly connected to one end of the first roller pressing mechanism 300 (i.e., one end of the forming roller shaft 310) to drive the forming roller shaft 310 to rotate. The output shaft of the second drive motor is fixedly connected to one end of the second roller pressing mechanism 400 (i.e., one end of the support roller shaft 410) to drive the support roller shaft 410 to rotate in the opposite direction. When the first drive mechanism 610 and the second drive mechanism 620 are implemented manually, the first drive mechanism 610 and the second drive mechanism 620 are respectively implemented by a first drive handle (not shown) and a second drive handle. The first drive handle is fixedly connected to one end of the first roller pressing mechanism 300 (i.e., one end of the forming roller shaft 310) to drive the forming roller shaft 310 to rotate. The second drive handle is fixedly connected to one end of the second roller pressing mechanism 400 (i.e., one end of the support roller shaft 410) to drive the support roller shaft 410 to rotate in the opposite direction. Of course, in some other embodiments, the first roller pressing mechanism 300 and the second roller pressing mechanism 400 can also be implemented by a combination of automatic and manual driving, that is, the first roller pressing mechanism 300 is driven by a drive motor and the second roller pressing mechanism 400 is driven by a drive handle, or the first roller pressing mechanism 300 is driven by a drive handle and the second roller pressing mechanism 400 is driven by a drive motor; or in some other embodiments, since the second roller pressing mechanism 400 is an auxiliary forming component and its function is to support the material strip 100, the second drive mechanism 620 can be omitted, and it is only necessary for the support roller shaft 410 to be able to rotate voluntarily.

[0063] In specific implementations, only the first drive mechanism 610 can be provided without the second drive mechanism 620. In this way, the support roller 410 rotates without power, avoiding wear on the material belt 100 caused by asynchronous rotation between the forming roller 310 and the support roller 410 due to errors in the drive mechanism. At the same time, reducing the number of the first drive mechanism is also beneficial for energy conservation and emission reduction. In addition, in some embodiments, the first drive mechanism 610 and the second drive mechanism 620 can be omitted, and the material belt 100 can be driven by a traction mechanism to cause the forming roller 310 and the support roller 410 to rotate synchronously to form the notch 110, etc.

[0064] Please refer to Figure 3 and Figure 8 As a preferred embodiment of the present invention, it further includes a first fine-tuning component 710 disposed on the first side plate 220 and a second fine-tuning component 720 disposed on the second side plate 230. The first fine-tuning component 710 and the second fine-tuning component 720 are used to adjust the distance between the first roller pressing mechanism 300 and the second roller pressing mechanism 400 in the height direction, thereby adjusting the height of the forming space 500 to adapt to strips 100 of different thicknesses.

[0065] The first side plate 220 has a first adjustment groove 221, which is strip-shaped and extends along the height direction of the first side plate 220 (i.e., the arrangement direction of the forming roller 310 and the support roller 410). A first main adjustment block 222 and a first auxiliary adjustment block 223 are slidably disposed within the first adjustment groove 221. The second side plate 230 has a second adjustment groove 231 corresponding to the first adjustment groove 221. The second adjustment groove 231 is also strip-shaped and extends along the height direction of the second side plate 230. A second main adjustment block 232 and a corresponding first auxiliary adjustment block 223 are slidably disposed within the second adjustment groove 231 at the position corresponding to the first main adjustment block 222. A second auxiliary adjustment block 233 is slidably disposed at the position. The two ends of the forming roller shaft 310 are respectively rotatably disposed on the first main adjustment block 222 and the main second adjustment block via the first bearing 311. The two ends of the support roller shaft 410 are respectively rotatably disposed on the first auxiliary adjustment block 223 and the second auxiliary adjustment block 233 via the second bearing 411. By sliding the first main adjustment block 222 and the first auxiliary adjustment block 223 in the first adjustment groove 221 and by sliding the second main adjustment block 232 and the second auxiliary adjustment block 233 in the second adjustment groove 231, the forming roller shaft 310 and the support roller shaft 410 are driven to move away from or closer to each other in the height direction, which can change the gap between the forming roller shaft 310 and the support roller shaft 410, thereby realizing the adjustment of the height of the forming space 500. In this embodiment, the sliding method of the first main adjusting block 222, the second main adjusting block 232, the first auxiliary adjusting block 223 and the second auxiliary adjusting block 233 in the corresponding adjusting groove can be that the adjusting block has a sliding groove and slides with the corresponding side plate, or the adjusting block and the adjusting groove are respectively set with sliding rails to slide with each other, etc.

[0066] The first fine-tuning component 710 is disposed within the first adjusting groove 221 and supported between the first main adjusting block 222 and the first auxiliary adjusting block 223 to change the distance between the first main adjusting block 222 and the first auxiliary adjusting block 223; the second fine-tuning component 720 is disposed within the second adjusting groove 231 and supported between the second main adjusting block 232 and the second auxiliary adjusting block 233 to change the distance between the second main adjusting block 232 and the second auxiliary adjusting block 233. In this embodiment, both the first fine-tuning component 710 and the second fine-tuning component 720 include a plurality of fine-tuning pads 730 that can be selectively supported between the corresponding main adjusting block and auxiliary adjusting block. The height of each fine-tuning pad 730 gradually decreases or increases along the arrangement direction of the forming roller shaft 310 and the support roller shaft 410. By selecting a fine-tuning pad 730 of appropriate height to support between the main adjusting block and the auxiliary adjusting block, the distance between the forming roller shaft 310 and the support roller shaft 410 is changed, thereby reducing or increasing the height of the forming space 500. It is understood that in some other embodiments, the first fine-tuning component 710 and the second fine-tuning component 720 may also be provided with only one fine-tuning pad 730. When it is necessary to adjust the gap between the forming roller shaft 310 and the support roller shaft 410, it can be achieved by adding or removing a certain number of pads between the fine-tuning pad 730 and the main adjustment block and / or the secondary adjustment block.

[0067] Please refer to Figure 3 and Figure 5In a preferred embodiment of the present invention, a locking mechanism 800 supported on the frame 200 is further included. The locking mechanism 800 is used to press the first main adjusting block 222 and the second main adjusting block 232 from top to bottom, and then press the first auxiliary adjusting block 223 and the second auxiliary adjusting block 233 through the fine-adjustment pad 730 to fix the forming roller shaft 310 and the support roller shaft 410, and prevent the forming roller shaft 310 and the support roller shaft 410 from shifting in the height direction. The locking mechanism 800 includes a pressure plate 810 supported on the first side plate 220 and the second side plate 230, a first locking member 820 adjustablely passing through the pressure plate 810 and corresponding to one side of the first side plate 220 and abutting against the first main adjusting block 222 or the first auxiliary adjusting block 223, and a second locking member 830 adjustablely passing through the pressure plate 810 and corresponding to one side of the second side plate 230 and abutting against the second main adjusting block 232 or the second auxiliary adjusting block 233. The pressure plate 810 is disposed opposite to the base plate 210. The lower surface of the pressure plate 810 has a second groove 811 at the position corresponding to the first side plate 220 and the second side plate 230. The upper ends of the first side plate 220 and the second side plate 230 are limited within the corresponding second groove 811 and are detachably fixed to the pressure plate 810 on the corresponding side by bolts, snaps, tenon joints, etc. In this embodiment, a third threaded hole 812 is provided along the height direction on the pressure plate 810 at the position corresponding to the first locking member 820 and the second locking member 830. The first locking member 820 and the second locking member 830 are defined as bolts. When locked, the ends of the first locking member 820 and the second locking member 830 are screwed into the corresponding third threaded hole 812 from top to bottom, and then pass downwards through the third threaded hole 812 and abut against the first main adjusting block 222 and the second main adjusting block 232 to fix the main adjusting block and the auxiliary adjusting block.

[0068] To achieve the above objectives, another technical solution of the present invention provides a roll forming process for explosion-proof discs, which uses the explosion-proof disc roll forming device described in the above embodiment to roll form explosion-proof disc grooves 110 on the strip 100.

[0069] Please refer to Figures 1 to 12 The explosion-proof sheet roll forming process of the present invention includes the following steps:

[0070] S1: Pass the strip 100 through the forming space 500 between the first roller pressing mechanism 300 and the second roller pressing mechanism 400 and support the strip 100 on the second roller pressing mechanism 400.

[0071] First, loosen the first locking member 820 and the second locking member 830. Select a suitable height for the fine-tuning pad 730 according to the thickness of the strip 100 and support it between the main adjusting block and the auxiliary adjusting block on the corresponding side, or add or remove a suitable number of shims between the fine-tuning pads 730 to make the height of the forming space 500 match the thickness of the strip 100. Then tighten the first locking member 820 and the second locking member 830 to fix the first roller pressing mechanism 300 and the second roller pressing mechanism 400.

[0072] Then, remove the fixing block 331 from the forming roller 310, replace the appropriate scoring insert 332 according to the depth of the formed scoring 110, install the scoring insert 332 into the inlay groove 3312, so that the limiting protrusion 3321 and the insert countersunk platform 3313 abut against each other and limit the movement, and then fix the fixing block 331 into the mounting groove 321.

[0073] Finally, after the free end of the strip 100 is pulled out from the strip support, it is inserted into the forming space 500 from back to front and pulled by the traction device so that the lower surface of the strip 100 is supported on the support roller 410 and limited between the support roller 410 and the forming roller 310.

[0074] S2: Control the rotation of the first roller pressing mechanism 300 and the second roller pressing mechanism 400, and synchronously convey the material strip 100 along the traction direction, so that the scoring forming part 340 and the second roller pressing mechanism 400 squeeze the material strip 100 to form explosion-proof scoring 110 on the material strip 100. Alternatively, control the material strip 100 to convey along the traction direction and drive the first roller pressing mechanism 300 and the second roller pressing mechanism 400 to rotate synchronously.

[0075] When the first roller pressing mechanism 300 and the second roller pressing mechanism 400 are driven by the first driving mechanism 610 and the second driving mechanism 620, and the first driving mechanism 610 and the second driving mechanism 620 are implemented by driving motors (the driving of the drive handle is similar to that of the driving motor, which will not be described in detail in this embodiment), the traction device is controlled to convey the material belt 100 along the traction direction, and the first driving motor is controlled to synchronously drive the forming roller shaft 310 to rotate and the second driving motor is controlled to synchronously drive the support roller shaft 410 to rotate in the opposite direction relative to the forming roller shaft 310. The conveying speed of the material belt 100 is adapted to the rotation speed of the first roller pressing mechanism 300 and the second roller pressing mechanism 400. During the conveying process of the material belt 100, the scoring assembly rotates with the extrusion ring 320 to contact the material belt 100. As the forming roller shaft 310 continues to rotate, the scoring protrusion 341 on the scoring insert 332 cooperates with the outer peripheral surface of the support roller shaft 410 to squeeze the material belt 100, thereby forming a score 110 on the upper surface of the material belt 100.

[0076] Alternatively, when the material strip 100 is being conveyed, the upper and lower surfaces of the material strip 100 cause the first roller pressing mechanism 300 and the second roller pressing mechanism 400 to rotate synchronously, so that the scoring assembly rotates with the extrusion ring 320 to contact the material strip 100. As the forming roller shaft 310 continues to rotate, the scoring protrusion 341 on the scoring insert 332 cooperates with the outer peripheral surface of the support roller shaft 410 to press the material strip 100, thereby forming a score 110 on the upper surface of the material strip 100.

[0077] The explosion-proof sheet roll forming device of the present invention, by setting a forming roller shaft 310 and a support roller shaft 410, and setting a forming space 500 between the forming roller shaft 310 and the support roller shaft 410, the material strip 100 is conveyed through the forming space 500. Under the rotational cooperation of the forming roller shaft 310 and the support roller shaft 410, the material strip 100 is squeezed to form a notch 110. The impact force on the material strip 100 during the forming process is small, and the consistency of the notch 110 is high. By controlling the forming roller shaft 310 and the support roller shaft 410 to rotate in opposite directions, the compression ring is reduced. The friction between the forming ring 320 and the support roller 410 and the material strip 100 is reduced, thus lowering the risk of wear on the material strip 100 and improving the forming quality of the explosion-proof sheet. At the same time, by setting the forming roller 310 and the support roller 410 into a cylindrical structure, the material strip 100 is in approximately line contact with the extrusion ring 320 and the support roller 410 during the conveying process. The small contact area further reduces the friction between the extrusion ring 320 and the support roller 410 and the material strip 100, thereby further reducing the risk of wear on the material strip 100 and improving the forming quality of the explosion-proof sheet.

[0078] In addition, the present invention also provides multiple scribing inserts 332 with different scribing protrusions 341. By replacing the scribing inserts 332 of different sizes, it can be adapted to the rolling of scribing 110 of different depths. Furthermore, the scribing inserts 332 are provided with limiting protrusions 3321, which cooperate with the insert countersunk platform 3313 provided on the fixing block 331 for positioning. The scribing inserts 332 can be quickly replaced simply by unscrewing the bolts between the fixing block 331 and the mounting groove 321, which is convenient and simple. At the same time, by setting a main adjustment block and a secondary adjustment block, and setting a fine adjustment component between the main adjustment block and the secondary adjustment block, the distance between the forming roller shaft 310 and the support roller shaft 410 in the height direction can be adjusted to adjust the height of the forming space 500, thereby adapting to the processing of strips 100 of different thicknesses, and has a wide range of applications.

Claims

1. A roll forming apparatus for explosion-proof discs, used for extruding and forming explosion-proof disc markings on a strip of material, comprising a frame, characterized in that, It also includes a first roller pressing mechanism and a second roller pressing mechanism rotatably mounted on the frame. A forming space is formed between the first roller pressing mechanism and the second roller pressing mechanism through which the feed strip passes. The height of the forming space is adapted to the thickness of the feed strip. A scoring forming part protruding from the outer surface of the first roller pressing mechanism is formed on the first roller pressing mechanism. The scoring forming part cooperates with the second roller pressing mechanism to squeeze the feed strip to form scoring on the feed strip. The frame includes a base plate and a first side plate and a second side plate erected on the base plate and arranged opposite to each other; the first roller pressing mechanism includes a forming roller shaft rotatably disposed between the first side plate and the second side plate, an extrusion ring body circumferentially disposed on the outer circumferential surface of the forming roller shaft, and at least one scoring assembly disposed on the extrusion ring body, wherein the scoring forming part is disposed on the scoring assembly. The outer circumferential surface of the extrusion ring is radially recessed with a mounting groove corresponding to the scoring assembly. The scoring assembly includes a fixing block that can be detachably installed in the mounting groove and a plurality of scoring inserts that can be selectively embedded in the fixing block. The outer side surface of the fixing block and the outer side surface of the scoring insert are both defined as arc surfaces coaxial with the extrusion ring, and the radius of curvature of the outer side surface of the fixing block and the outer side surface of the scoring insert are adapted to the radius of curvature of the extrusion ring, so that the outer side surface of the fixing block and the outer side surface of the scoring insert together with the outer side surface of the extrusion ring form a closed circumferential surface.

2. The explosion-proof sheet roll forming device according to claim 1, characterized in that, The extrusion ring is radially protruding from the outer circumferential surface of the forming roller shaft. The scoring forming part includes at least one scoring ridge formed on the scoring assembly. The scoring ridge protrudes from the outer side of the scoring assembly and protrudes toward the forming space when the extrusion ring rotates to the corresponding position.

3. The explosion-proof sheet roll forming device according to claim 2, characterized in that: The serrated ridges protrude radially from the outer surface of the serrated insert. When the forming roller rotates, the serrated ridges periodically press the strip to form serrations on the strip.

4. The explosion-proof sheet roll forming device according to claim 3, characterized in that, The height of the ridge protruding radially from the outer side of the ridge insert for each ridge insert gradually increases or decreases to change the forming depth of the ridge.

5. The explosion-proof sheet roll forming device according to claim 3, characterized in that, The fixing block has a radially penetrating groove at the position corresponding to the engraved insert. The inner side of the fixing block is recessed with an insert countersink at the outer edge of the insert groove. The engraved insert conforms to the shape of the insert groove and is fitted into the insert groove. The inner side of the engraved insert is protruded with a limiting protrusion that cooperates with the insert countersink at the position corresponding to the insert countersink. The engraved insert is fitted into the insert groove from the inside to the outside so that the limiting protrusion abuts against and limits the position within the insert countersink.

6. The explosion-proof sheet roll forming device according to claim 2, characterized in that, The second roller pressing mechanism is defined as a support roller shaft rotatably disposed between the first side plate and the second side plate, the support roller shaft rotating in the opposite direction to the forming roller shaft, and the outer peripheral surface of the support roller shaft and the outer peripheral surface of the extrusion ring forming the forming space at a distance.

7. The explosion-proof sheet roll forming device according to claim 6, characterized in that, The first side plate is provided with a first adjustment groove, and a first main adjustment block and a first auxiliary adjustment block are slidably arranged in the first adjustment groove along the arrangement direction of the forming roller shaft and the support roller shaft. The second side plate is provided with a second adjustment groove, and a second main adjustment block corresponding to the first main adjustment block and a second auxiliary adjustment block corresponding to the first auxiliary adjustment block are slidably arranged in the second adjustment groove. The two ends of the forming roller shaft are respectively rotatably arranged in the first main adjustment block and the second main adjustment block through the first bearing. The two ends of the support roller shaft are respectively rotatably arranged in the first auxiliary adjustment block and the second auxiliary adjustment block through the second bearing. The explosion-proof sheet roll forming device further includes a first fine-tuning component disposed in the first adjusting groove and supported between the first main adjusting block and the first auxiliary adjusting block, and a second fine-tuning component disposed in the second adjusting groove and supported between the second main adjusting block and the second auxiliary adjusting block; The first and second fine-tuning components each include a plurality of fine-tuning pads that can be selectively supported between the corresponding main adjustment block and the secondary adjustment block. The height of each fine-tuning pad gradually decreases or increases along the arrangement direction of the forming roller shaft and the support roller shaft, so as to change the distance between the forming roller shaft and the support roller shaft, thereby reducing or increasing the height of the forming space.

8. The explosion-proof sheet roll forming device according to claim 7, characterized in that, It also includes a locking mechanism supported on the frame; the locking mechanism includes a pressure plate supported on the first side plate and the second side plate, a first locking member adjustablely passing through the pressure plate and corresponding to one side of the first side plate and abutting against the first main adjusting block or the first auxiliary adjusting block, and a second locking member adjustablely passing through the pressure plate and corresponding to one side of the second side plate and abutting against the second main adjusting block or the second auxiliary adjusting block.

9. The explosion-proof sheet roll forming apparatus according to any one of claims 1 to 8, characterized in that, It also includes a first drive mechanism for driving the first roller pressing mechanism to rotate and a second drive mechanism for driving the second roller pressing mechanism to rotate in the opposite direction relative to the first roller pressing mechanism. The first drive mechanism is fixedly connected to one end of the first roller pressing mechanism, and the second drive mechanism is fixedly connected to one end of the second roller pressing mechanism.

10. A roll forming process for explosion-proof sheets, characterized in that, The explosion-proof sheet is formed using the explosion-proof sheet roll forming device as described in any one of claims 1 to 9, wherein the forming process includes the following steps: The strip is passed through the forming space between the first and second roller pressing mechanisms and supported on the second roller pressing mechanism. The first and second roller pressing mechanisms are controlled to rotate and drive the material belt to be conveyed, or the material belt is controlled to be conveyed along the traction direction and drive the first and second roller pressing mechanisms to rotate, so that the scoring forming part and the second roller pressing mechanism squeeze the material belt to form explosion-proof scoring on the material belt. The conveying speed of the material belt is adapted to the rotation speed of the first and second roller pressing mechanisms.

Images