Sheet molding tool

Abstract

The utility model provides a sheet material forming tool for manufacturing corrugated sheet, including upper tool assembly and lower tool assembly, upper tool assembly and lower tool assembly include base and a plurality of finger elements respectively, a plurality of upper finger elements and a plurality of lower finger elements are inserted in upper base and lower base along the feeding direction, interval, upper finger elements and lower finger elements are opposite, set alternately, are used for stamping sheet material to form the corrugation of corrugated sheet, the inner wall surface of upper base and lower base is abutted on the side wall of upper finger elements and lower finger elements respectively. The sheet material forming tool will be subject to wear forming element and fixed element split body manufacture, only need to replace the damaged finger element, and do not need to replace the whole sheet material forming tool, thereby shorten the replacement time, improve production efficiency, also save the replacement cost. And the cooperation structure of finger element and base is simple, avoids stress concentration, reduces the probability of damage.

Description

Technical Field

[0001] This utility model relates to the technical field of material forming, and in particular to a sheet forming tool. Background Technology

[0002] In many industrial sectors, such as general chemical and petrochemical industries, the expansion of production scale and the increasing demands for product quality have placed higher requirements on the performance of separation equipment. Packed towers, as a highly efficient mass and heat transfer device, have been widely used.

[0003] The separation material used in packed towers is corrugated sheet. In the forming process of sheet material, stainless steel precision thin strip is generally fed into the packing forming tool from one end of the equipment. The forming tool includes an upper tool assembly and a lower tool assembly. Under the stamping action of the upper and lower tool assemblies, the stainless steel precision thin strip completes the forming process of the regular packing sheet, and then comes out from the other end of the packing forming tool.

[0004] However, existing molding tools for manufacturing corrugated sheets suffer from several drawbacks. Firstly, the large contact area between the molding elements and the material in the mold increases friction, leading to easy wear. Secondly, the complex structure of the molding elements results in complex processing, stress concentration, and a tendency to crack and break during use. Furthermore, the structural limitations of the molding elements result in insufficient adjustment margins, rendering even slight wear ineffective for adjustment. These factors restrict the mold's lifespan and efficiency, necessitating the replacement of molding elements. However, replacement is time-consuming, and due to structural limitations, molding elements in different locations are not interchangeable, requiring the replacement of the entire set; individual replacements are not feasible. This lengthy replacement time, sometimes several hours, severely impacts efficiency. Additionally, the complex structure of the molding elements and the need to replace the entire set lead to high processing costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of existing corrugated sheet forming tools that are easily damaged and have long replacement time, resulting in low production efficiency, and to provide a sheet forming tool.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A sheet forming tool for manufacturing corrugated sheets, the sheet forming tool comprising an upper tool assembly and a lower tool assembly, the upper tool assembly comprising an upper base and a plurality of upper finger elements, the lower tool assembly comprising a lower base and a plurality of lower finger elements, each of the upper finger elements and each of the lower finger elements extending along a feed direction perpendicular to the direction in which the corrugated sheet is conveyed;

[0008] The plurality of upper finger-shaped elements are inserted at intervals along the feeding direction on the upper base, and the plurality of lower finger-shaped elements are inserted at intervals along the feeding direction on the lower base. The upper finger-shaped elements and the lower finger-shaped elements are arranged opposite to each other and alternately for stamping sheet material to form the corrugations of the corrugated sheet.

[0009] The inner wall surface of the upper base for inserting the upper finger element extends perpendicularly to the feeding direction to both ends of the upper finger element and abuts against the side wall of the upper finger element; the inner wall surface of the lower base for inserting the lower finger element extends perpendicularly to the feeding direction to both ends of the lower finger element and abuts against the side wall of the lower finger element.

[0010] In this design, the upper and lower finger-shaped elements serve as cooperating forming components. The sheet forming tool uses these elements, arranged opposite and alternately, to press crests and troughs into the sheet material during relative movement, forming a corrugated sheet. The upper and lower finger-shaped elements are detachably connected to the upper and lower bases respectively via an insertion method. This allows for the separate manufacturing of the wear-prone forming components from the fixed components (i.e., the upper and lower bases), facilitating component replacement. When one finger-shaped element is damaged, only the damaged element needs to be removed and replaced, eliminating the need to replace the entire sheet forming tool. This shortens replacement time, improves production efficiency, and saves replacement costs. Furthermore, the upper base, with the aforementioned configuration, extends its inner wall to both ends of the upper finger-shaped elements and abuts against their sidewalls. Essentially, the entire sidewall of the upper finger-shaped element is clamped within the upper base, ensuring that the structural stability of the sheet forming tool is not compromised by the detachable forming components. Meanwhile, since the molding element is detachable, it can adopt a finger-like structure with a relatively regular shape, which simplifies its mating structure with the upper and lower bases, thereby avoiding stress concentration and reducing the probability of damage.

[0011] Preferably, the upper base has a plurality of slots that mate with the upper finger element; and / or, the lower base has a plurality of slots that mate with the lower finger element.

[0012] In this design, the upper and lower bases are connected to the corresponding upper and lower finger elements via slots. The main structures of the upper and lower bases can still be machined as a single unit, providing support for the supported upper and lower finger elements and ensuring structural strength. By increasing the number of slots or adjusting their spacing, the spacing between the upper and lower finger elements can be adjusted. This helps ensure the precision of the corrugated sheet machining and allows the molded elements (upper and lower finger elements) to be made thinner, reducing the contact area between the molded elements and the material, thereby reducing the probability of wear and damage.

[0013] Preferably, the upper base includes a plurality of upper base elements, and the upper finger elements are inserted between two adjacent upper base elements;

[0014] And / or, the lower base includes a plurality of lower base elements, and the lower finger elements are inserted between two adjacent lower base elements.

[0015] In this solution, decomposing the upper base into several upper base elements and inserting upper finger elements between adjacent upper base elements is another form of connecting the upper finger elements; and / or, decomposing the lower base into several lower base elements and inserting lower finger elements between adjacent lower base elements is another form of connecting the lower finger elements. With this arrangement, the upper and lower tool assemblies form an interconnected composite structure, further simplifying the structure. Each component is easy to process, replace, and maintain. It also makes it easier to adjust the spacing of the finger elements and replace finger elements of different sizes. This helps ensure the accuracy of the corrugated sheet processing and allows the forming elements (upper and lower finger elements) to be made thinner, reducing the contact area between the forming elements and the material, thereby reducing the probability of wear and damage.

[0016] Preferably, a spacer is further inserted between the upper finger element and the upper base element; and / or, a spacer is further inserted between the lower finger element and the lower base element.

[0017] In this design, the spacing between the upper finger elements can be adjusted by inserting shims between the upper finger elements and the upper base element. Similarly, the spacing between the lower finger elements can be adjusted by inserting shims between the lower finger elements and the lower base element.

[0018] Preferably, the upper finger-shaped elements are arranged at equal intervals along the feeding direction, and the lower finger-shaped elements are arranged at equal intervals along the feeding direction;

[0019] The distance between the upper finger element and the adjacent lower finger element along the feeding direction is A, the center distance between two adjacent upper finger elements is B, and the ratio of A to B is not less than 30% and not greater than 40%.

[0020] In this solution, the above-mentioned configuration allows for an increase in the forming space between the upper and lower finger elements by reducing their structural size, thus ensuring the processing accuracy of the corrugated sheet.

[0021] Preferably, both the upper finger element and the lower finger element include straight segments distributed along the extension direction and curved segments extending from both ends of the straight segments; at least one of the upper finger element and the lower finger element has a plurality of heat dissipation grooves formed in the straight segments of the straight segments.

[0022] In this design, the aforementioned heat dissipation grooves effectively dissipate the heat generated by the upper and lower finger components during the molding process, preventing deformation and extending their service life. They also prevent metal dust from adhering to the upper and lower finger components during processing, thus reducing processing efficiency. The straight section, being the central section, is the main functional area for molding and also the area generating the most heat. Distributing the heat dissipation grooves along this straight section improves heat dissipation efficiency.

[0023] Preferably, both the upper finger element and the lower finger element include a forming surface for stamping and an insertion end inserted into the upper base and the lower base;

[0024] The heat dissipation groove is a slot that extends from the molding surface to the insertion end.

[0025] In this solution, the heat dissipation groove adopts the above-mentioned groove shape, which has a simple structure, makes it easy to control the groove size, and can dissipate heat without causing deformation.

[0026] Preferably, both the upper finger element and the lower finger element include a forming surface for stamping, and an insertion end inserted into the upper base and the lower base;

[0027] The upper finger element and / or the lower finger element have protrusions at their ends in the extension direction and at the insertion end, the protrusions being used to engage with the frame of the sheet forming tool to restrict the movement of the finger elements.

[0028] In this solution, by engaging the protrusions and the frame of the sheet forming tool, the fixing effect is further strengthened on the basis of the forming elements (upper finger elements and lower finger elements) being inserted into the fixing elements (upper base and lower base), thus preventing loosening and affecting the processing accuracy.

[0029] Preferably, the plurality of upper finger elements and the upper base element are provided with corresponding connecting holes, the connecting holes being used to pass through connecting rods to connect and fix the upper finger elements and the upper base element in series;

[0030] And / or, the plurality of lower finger elements and the lower base element are provided with corresponding connecting holes, the connecting holes being used to pass through connecting rods to connect and fix the lower finger elements and the lower base element in series.

[0031] In this solution, the upper tool assembly and / or lower tool assembly connect and fix the forming element and the fixing element in series through the corresponding connecting holes and connecting rods, thereby achieving assembly and ensuring connection strength.

[0032] Preferably, the upper finger element and the lower finger element have stamped surfaces, and the stamped surfaces are provided with wear-resistant coatings.

[0033] In this solution, the above-mentioned settings are adopted to improve the wear resistance of the molded surface of the finger element.

[0034] Preferably, the wear-resistant coating is a diamond-like carbon-based coating.

[0035] In this solution, a diamond-like carbon-based coating is used to further improve the wear resistance of the molded surface.

[0036] The significant advantages of this invention are as follows: The sheet forming tool uses upper and lower finger-shaped elements arranged opposite each other and alternately. During relative movement, these elements press crests and troughs into the sheet material, forming a corrugated sheet. The upper and lower finger-shaped elements are detachably connected to the upper and lower bases respectively via an insertion method. This allows for the separate manufacturing of the wear-prone forming elements and the fixing elements (i.e., the upper and lower bases), facilitating the replacement of the forming elements. When one finger-shaped element is damaged, only the damaged element needs to be removed and replaced, without replacing the entire sheet forming tool, thus shortening replacement time, improving production efficiency, and saving replacement costs. Furthermore, the upper base, with the aforementioned arrangement, extends its inner wall to both ends of the upper finger-shaped elements and abuts against the sidewalls of the upper finger-shaped elements. This means the entire sidewall of the upper finger-shaped elements is clamped within the upper base, ensuring that the structural stability of the entire sheet forming tool is not compromised by the detachable forming elements. Meanwhile, since the molding element is detachable, it can adopt a finger-like structure with a relatively regular shape, which simplifies its mating structure with the upper and lower bases, thereby avoiding stress concentration and reducing the probability of damage. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of an embodiment of the sheet forming tool of this utility model.

[0038] Figure 2 This is a schematic diagram of the lower tool assembly of an embodiment of the sheet forming tool of this utility model.

[0039] Figure 3 This is a schematic diagram of the spacing between the finger elements in an embodiment of the sheet forming tool of this utility model.

[0040] Figure 4 This is a schematic diagram of the structure of the lower finger element in an embodiment of the sheet forming tool of this utility model.

[0041] Figure 5 This is a schematic diagram of the corrugated sheet formed by stamping according to an embodiment of the sheet forming tool of this utility model.

[0042] Explanation of reference numerals in the attached figures:

[0043] Sheet forming tool 1

[0044] Upper Tool Component 2

[0045] Upper base 21

[0046] Upper substrate element 210

[0047] Upper finger element 22

[0048] The portion 221 where the upper finger-shaped element is clamped by the upper base

[0049] The portion of the upper finger-shaped element exposed above the upper base 222

[0050] Tool Component 3

[0051] Lower base 31

[0052] Lower substrate element 310

[0053] Lower finger element 32

[0054] The portion 321 where the lower finger element is clamped by the lower base

[0055] The portion of the lower finger element exposed above the lower base 322

[0056] Mold Frame 4

[0057] Inner wall surface 5

[0058] Heat sink 6

[0059] straight segment 7

[0060] Bending section 8

[0061] Forming surface 9

[0062] Insertion end 10

[0063] Protrusion 11

[0064] Connection hole 12

[0065] Connecting rod 13

[0066] Bolt 14

[0067] Corrugated sheet 100

[0068] Peak 110

[0069] 120 Bogu

[0070] Feed direction C Detailed Implementation

[0071] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0072] This embodiment provides a sheet forming tool 1 for manufacturing a corrugated sheet 100. The corrugated sheet 100 is used as a layer of structured packing and installed in a packed tower in the chemical industry. The corrugated sheet 100 mainly plays the role of supporting the packing, optimizing fluid distribution, and enhancing mass transfer efficiency in the packed tower.

[0073] like Figure 1 As shown, and in combination Figure 3 and Figure 4 The sheet forming tool 1 includes an upper tool assembly 2 and a lower tool assembly 3. The upper tool assembly 2 includes an upper base 21 and a plurality of upper finger elements 22. The lower tool assembly 3 includes a lower base 31 and a plurality of lower finger elements 32. Each upper finger element 22 and each lower finger element 32 extends along the feeding direction C perpendicular to the corrugated sheet 100 being fed.

[0074] Several upper finger-shaped elements 22 are inserted at intervals along the feeding direction C on the upper base 21, and several lower finger-shaped elements 32 are inserted at intervals along the feeding direction C on the lower base 31. The upper finger-shaped elements 22 and the lower finger-shaped elements 32 are arranged opposite to each other and alternately to press sheet material to form the corrugations of the corrugated sheet 100.

[0075] The inner wall surface 5 of the upper base 21 for inserting the upper finger element 22 extends perpendicularly to the feeding direction C to both ends of the upper finger element 22 and abuts against the side wall of the upper finger element 22; the inner wall surface 5 of the lower base 31 for inserting the lower finger element 32 extends perpendicularly to the feeding direction C to both ends of the lower finger element 32 and abuts against the side wall of the lower finger element 32.

[0076] Specifically, in this embodiment, the components of the sheet forming tool 1 are made of metal. The upper finger element 22 and the lower finger element 32 are stamped forming elements, also known as punches, with a consistent main body shape and an arc-shaped structure on the top surface conforming to the corrugation dimensions. The upper base 21 and the lower base 31 are seats for fixing the upper finger element 22 and the lower finger element 32. According to the size requirements of the formed corrugated sheet 100, upper finger elements 22 and lower finger elements 32 of appropriate specifications are selected and inserted into the upper base 21 and the lower base 31 at a certain interval. During insertion, generally, the lower finger element 32 is placed in the exact middle of two adjacent upper finger elements 22, or in other words, the upper finger element 22 is placed in the exact middle of two adjacent lower finger elements 32; of course, considering manufacturing errors or the need for forming effect, the position of the lower finger element 32 between two adjacent upper finger elements 22 is not necessarily absolutely in the middle, but can have a certain deviation. To better secure the finger elements, the upper base 21 and the lower base 31 extend in the depth direction (i.e., perpendicular to the feed direction C), with their surfaces abutting against the sidewalls where the upper finger element 22 and the lower finger element 32 are inserted, respectively, tightly clamping the upper finger element 22 and the lower finger element 32. That is, the upper finger element 22 includes a portion 221 clamped by the upper base and a portion 222 protruding from the upper base, and the lower finger element 32 includes a portion 321 clamped by the lower base and a portion 322 protruding from the lower base. Figure 4 The section with cross-sections shows the surface of the portion 321 where the lower finger element is clamped by the lower base, extending along the depth direction (i.e., perpendicular to the feed direction C), while the lower base 31 extends along the depth direction to the two ends of the lower finger element 32 in the depth direction (i.e., Figure 4 The two protrusions 11 are located at the ends), so that the two inner wall surfaces 5 and the entire outer wall surface of the portion 321 where the lower finger element is clamped by the lower base (i.e. Figure 4 The portion with the cross-section line abuts against the upper base, clamping it in place. Similarly, the portion 221 clamped by the upper base of the upper finger element also extends in the depth direction. The upper base 21 extends in the depth direction to the two ends of the upper finger element 22 in the depth direction, so that its two inner wall surfaces 5 abut against the entire outer wall surface of the portion 221 clamped by the lower base of the upper finger element, clamping the upper finger element 22. This can prevent the finger element from loosening and affecting the molding quality. The assembled finger element and base are placed in a mold frame 4 and fixed to form the upper tool assembly 2 and the lower tool assembly 3. Then, the upper tool assembly 2 and the lower tool assembly 3 are respectively installed on the stamping equipment.

[0077] Before forming, the corrugated sheet 100 is a single, flat stainless steel plate. During forming, the stainless steel plate is fed between the upper finger element 22 and the lower finger element 32, and is gradually fed along the feeding direction C. When the stamping equipment starts, the upper tool assembly 2 and the lower tool assembly 3 move relative to each other, and the upper finger element 22 and the lower finger element 32 press the stainless steel plate, such as... Figure 5 As shown, the lower finger element 32 forms a wave crest 110 where it is stamped upwards, and the upper finger element 22 forms a wave trough 120 where it is stamped downwards, thus forming a whole corrugated sheet 100 with undulating waves.

[0078] In the structure of this sheet forming tool 1, the upper finger element 22 and the lower finger element 32 serve as mutually cooperating forming elements. The sheet forming tool 1 uses the upper finger element 22 and the lower finger element 32, arranged opposite to each other and alternately, to press the sheet material into crests 110 and troughs 120 during relative movement, forming a corrugated sheet 100. The upper finger element 22 and the lower finger element 32 are detachably connected to the upper base 21 and the lower base 31 respectively by insertion. This allows for the separate manufacturing of the easily worn forming elements and the fixing elements (i.e., the upper base 21 and the lower base 31), facilitating the replacement of the forming elements. When one of the finger elements is damaged, only the damaged finger element needs to be removed and replaced, without replacing the entire sheet forming tool 1, thus shortening replacement time, improving production efficiency, and saving replacement costs. Based on this, the upper base 21, with the above-described arrangement, extends its inner wall surface 5 to both ends of the upper finger element 22 (i.e., Figure 4 The two protrusions 11 at the ends of the upper finger element 22 abut against the side wall of the upper finger element 22, meaning the entire side wall of the upper finger element 22 is clamped within the upper base 21. This ensures that the structural stability of the entire sheet forming tool 1 is not reduced due to the detachable forming element. Simultaneously, because the forming element is detachable, it can employ a more regularly shaped finger structure, simplifying its mating structure with the upper and lower bases 31, thereby avoiding stress concentration and reducing the probability of damage.

[0079] Among them, such as Figure 3As shown, the upper base 21 includes several upper base elements 210, each being a relatively thick steel plate, with upper finger elements 22 inserted between adjacent upper base elements 210. The lower base 31 includes several lower base elements 310, each also being a relatively thick steel plate, with lower finger elements 32 inserted between adjacent lower base elements 310. Decomposing the upper base 21 into several upper base elements 210 and inserting the upper finger elements 22 between adjacent upper base elements 210 is one form of connecting the upper finger elements 22. Similarly, decomposing the lower base 31 into several lower base elements 310 and inserting the lower finger elements 32 between adjacent lower base elements 310 is another form of connecting the lower finger elements 32. With this arrangement, the upper tool assembly 2 and the lower tool assembly 3 form an interconnected composite structure, further simplifying the structure. Each component is easy to process, replace, and maintain. It is also easier to adjust the spacing of the finger elements and replace finger elements of different sizes. This helps to ensure the processing accuracy of the corrugated sheet 100, and on the other hand, it allows the forming elements (upper finger element 22 and lower finger element 32) to be made thinner, reducing the contact area between the forming elements and the material, thereby reducing the probability of wear and damage.

[0080] Of course, the way the upper finger element 22 and the lower finger element 32 are inserted is not limited to the method of this embodiment. In other embodiments, the upper base 21 and the lower base 31 can also be processed as a whole, instead of being divided into several base elements as in this embodiment. Specifically, the upper base 21 has several slots that mate with the upper finger element 22. The slots are spaced apart on the main structure of the upper base 21, and the shape of the slots can be designed according to the shape of the finger element to achieve a tighter fit. Similarly, the lower base 31 can also have several slots that mate with the lower finger element 32, and the distribution and shape of the slots are similar to those of the slots in the upper base 21.

[0081] In this structural design, the upper base 21 and lower base 31 are connected to the corresponding upper finger elements 22 and lower finger elements 32 by means of slots. The main structures of the upper base 21 and lower base 31 can still be machined as a whole, providing support for the upper finger elements 22 and lower finger elements 32 and ensuring structural strength. By increasing the number of slots or adjusting the spacing between them, the spacing between the upper finger elements 22 and the lower finger elements 32 can be adjusted. This helps ensure the machining accuracy of the corrugated sheet 100 and allows the molded elements (upper finger elements 22 and lower finger elements 32) to be made thinner, reducing the contact area between the molded elements and the material, thereby reducing the probability of wear and damage.

[0082] In other embodiments, in order to better adjust the spacing between the molding elements, a shim can be inserted between the upper finger element 22 and the upper base element 210, so that the spacing between the upper finger elements 22 can be adjusted.

[0083] Similarly, a spacer can be inserted between the lower finger element 32 and the lower base element 310 to adjust the spacing between the lower finger elements 32.

[0084] like Figure 3 As shown, in this embodiment, the upper finger element 22 and the lower finger element 32 are arranged with equal spacing; the distance between the relative surfaces of the upper finger element 22 and the adjacent lower finger element 32 along the feeding direction C is A, and the center distance between two adjacent upper finger elements 22 is B. The ratio of A to B is not less than 30% and not greater than 40%, that is, 30%≤A / B≤40%. By adopting such a ratio, the forming space between the upper finger element 22 and the lower finger element 32 can be increased by reducing the structure of the upper finger element 22 and the lower finger element 32, thus ensuring the processing accuracy of the corrugated sheet 100.

[0085] like Figure 4 As shown, both the upper finger element 22 and the lower finger element 32 include straight segments 7 distributed along the extension direction C and curved segments 8 extending from both ends of the straight segments 7. Several heat dissipation grooves 6 are formed on the straight segments 7 of both the upper and lower finger elements 22. These heat dissipation grooves 6 allow the heat generated by the upper and lower finger elements 22 during the molding process to be dissipated in a timely manner, preventing deformation of the upper and lower finger elements 22 and 32 and affecting their service life; they also prevent metal dust from adhering to the upper and lower finger elements 22 and 32 during processing, thus affecting processing efficiency. The straight segment 7 is the middle segment, which is the main functional segment of molding and also the area where more heat is generated. Distributing the heat dissipation grooves 6 on the straight segment 7 improves heat dissipation efficiency.

[0086] In other embodiments, depending on the actual heat generation of the upper finger element 22 and the lower finger element 32, a heat dissipation groove 6 may be provided on only one of the finger elements, while the other finger element may not have a heat dissipation groove 6, in order to ensure structural integrity and obtain better structural strength.

[0087] Among them, such as Figure 4 As shown, the lower finger element 32 includes a forming surface 9 for stamping and an insertion end 10 inserted into the lower base 31; the structure of the upper finger element 22 is similar to that of the lower finger element 32. The heat dissipation groove 6 is a slotted groove extending from the forming surface 9 to the insertion end 10. The heat dissipation groove 6 adopts the above-described form of slotting, which has a simple structure, is easy to control the slot size, can dissipate heat, and will not cause deformation.

[0088] Among them, such as Figure 4 As shown, the lower finger element 32 has a protrusion 11 extending in the extension direction at its end in the extension direction and at the insertion end 10. The protrusion 11 is used to engage with the frame of the sheet forming tool 1 to restrict the movement of the finger element. The structure of the upper finger element 22 is similar to that of the lower finger element 32. By engaging the protrusion 11 with the frame of the sheet forming tool 1, the fixing effect is further strengthened on the basis of the forming elements (upper finger element 22 and lower finger element 32) being inserted into the fixing elements (upper base 21 and lower base 31), thus preventing loosening and affecting the processing accuracy.

[0089] Among them, such as Figure 2 and Figure 4 As shown, several upper finger-shaped elements 22 and upper base elements 210 have corresponding connecting holes 12. Connecting rods 13 are inserted through these holes 12 to connect and fix the upper finger-shaped elements 22 and upper base elements 210 in series. The connecting rod 13 is a threaded rod with a smooth middle section and threaded ends. After passing through each connecting hole 12, the threaded ends are tightened and fixed with bolts 14. Similarly, several lower finger-shaped elements 32 and lower base elements 310 have corresponding connecting holes 12. Connecting rods 13 are inserted through these holes 12 to connect and fix the lower finger-shaped elements 32 and lower base elements 310 in series. The upper tool assembly 2 and / or lower tool assembly 3 connect and fix the forming elements and fixing elements through the corresponding connecting holes 12 and connecting rods 13, achieving assembly and ensuring connection strength.

[0090] In this embodiment, the upper finger element 22 and the lower finger element 32 are configured to undergo heat treatment, and the stamped surfaces of the upper finger element 22 and the lower finger element 32 are provided with a wear-resistant coating. This treatment method can improve the strength of the finger element and the wear resistance of the formed surface.

[0091] Specifically, the wear-resistant coating in this embodiment is a diamond-like carbon (DLC) coating, also known as a DLC (Diamond-like Carbon) coating. Using a DLC coating is a preferred coating material, as it can more effectively improve the wear resistance of the molded surface compared to other materials.

[0092] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A sheet forming tool for manufacturing corrugated sheets, the sheet forming tool comprising an upper tool assembly and a lower tool assembly, the upper tool assembly comprising an upper base and a plurality of upper finger elements, the lower tool assembly comprising a lower base and a plurality of lower finger elements, each of the upper finger elements and each of the lower finger elements extending along a feed direction perpendicular to the direction in which the corrugated sheet is fed, characterized in that, The plurality of upper finger-shaped elements are inserted at intervals along the feeding direction on the upper base, and the plurality of lower finger-shaped elements are inserted at intervals along the feeding direction on the lower base. The upper finger-shaped elements and the lower finger-shaped elements are arranged opposite to each other and alternately for stamping sheet material to form the corrugations of the corrugated sheet. The inner wall surface of the upper base for inserting the upper finger element extends perpendicularly to the feeding direction to both ends of the upper finger element and abuts against the side wall of the upper finger element; the inner wall surface of the lower base for inserting the lower finger element extends perpendicularly to the feeding direction to both ends of the lower finger element and abuts against the side wall of the lower finger element.

2. The sheet forming tool as described in claim 1, characterized in that, The upper base has a plurality of slots that mate with the upper finger element; and / or, the lower base has a plurality of slots that mate with the lower finger element.

3. The sheet forming tool as described in claim 1, characterized in that, The upper base includes a plurality of upper base elements, and the upper finger elements are inserted between two adjacent upper base elements; And / or, the lower base includes a plurality of lower base elements, and the lower finger elements are inserted between two adjacent lower base elements.

4. The sheet forming tool as described in claim 3, characterized in that, A spacer is also inserted between the upper finger element and the upper base element; and / or, a spacer is also inserted between the lower finger element and the lower base element.

5. The sheet forming tool as described in claim 1, characterized in that, The upper finger-shaped elements are arranged at equal intervals along the feeding direction, and the lower finger-shaped elements are arranged at equal intervals along the feeding direction; The distance between the upper finger element and the adjacent lower finger element along the feeding direction is A, the center distance between two adjacent upper finger elements is B, and the ratio of A to B is not less than 30% and not greater than 40%.

6. The sheet forming tool as described in claim 1, characterized in that, Both the upper finger element and the lower finger element include straight segments distributed along the extension direction and curved segments extending from both ends of the straight segments; at least one of the upper finger element and the lower finger element has a plurality of heat dissipation grooves in the straight segments.

7. The sheet forming tool as described in claim 6, characterized in that, Both the upper finger element and the lower finger element include a forming surface for stamping, and an insertion end inserted into the upper base and the lower base; The heat dissipation groove is a slot that extends from the molding surface to the insertion end.

8. The sheet forming tool as described in claim 1, characterized in that, Both the upper finger element and the lower finger element include a forming surface for stamping, and an insertion end inserted into the upper base and the lower base; The upper finger element and / or the lower finger element have protrusions at their ends in the extension direction and at the insertion end, the protrusions being used to engage with the frame of the sheet forming tool to restrict the movement of the finger elements.

9. The sheet forming tool as described in claim 3, characterized in that, The plurality of upper finger elements and the upper base element are provided with corresponding connecting holes, the connecting holes being used to pass through connecting rods to connect and fix the upper finger elements and the upper base element in series; And / or, the plurality of lower finger elements and the lower base element are provided with corresponding connecting holes, the connecting holes being used to pass through connecting rods to connect and fix the lower finger elements and the lower base element in series.

10. The sheet forming tool as described in claim 1, characterized in that, The upper finger element and the lower finger element have stamped surfaces, and the stamped surfaces are provided with a wear-resistant coating, which is a diamond-like carbon-based coating.

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