A pin subassembly and a progressive die including the same

Abstract

The utility model provides a kind of into subassembly and the continuous mould containing it, it is related technical field, solve the technical problems such as angle bending in stainless steel product continuous mould mass production, bending angle is not unstable.The into subassembly includes pre-pressing line into sub that is installed in lower die plate, pre-pressing line into sub includes connecting portion and press line forming part;Connecting portion is set in lower die plate inside;At least partial area of press line forming part protrudes from lower die plate top;It also includes forming into sub and pressure rib.The utility model changes bending mode and increases bending press line structure to solve the problem of rebounding and not reaching position when bending down local stainless steel product and hard material in sheet metal mould, improve the qualified rate of bending angle in stainless steel product continuous mould mass production, ensure the size stability when product bending, simultaneously solve the phenomenon of hole bending shape when bending due to large hole in product, product quality is more advanced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an insert component and a progressive mold including the insert. Background Technology

[0002] During sheet metal bending, when the material of the product being bent is relatively hard, especially stainless steel, the actual angle of the product after bending is greater than the angle required by the drawing due to the hardness and springback of the material. Even if the bending angle is reduced to compensate for the springback, the bending stability cannot be guaranteed. Utility Model Content

[0003] To ensure that the required bending angle is achieved when the product is bent, this utility model provides an insert assembly and a continuous mold containing the insert assembly. The mold structure adds a pre-pressing insert for first pressing the product bending lines, and at the same time, a pressing rib bending structure is set on the forming insert to solve the technical problems of incomplete angle bending and unstable bending angle in the mass production of stainless steel products using continuous molds in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides an insert assembly, including a pre-pressing wire insert installed in a lower template, wherein the pre-pressing wire insert includes a connecting part and a pressing and forming part; wherein:

[0006] The connecting part is fitted inside the lower template;

[0007] At least a portion of the crease forming section protrudes from the top of the lower template.

[0008] The insert assembly provided by this utility model solves the problem of incomplete bending and springback in the downward partial bending of stainless steel products in high-speed production of sheet metal continuous dies by setting a pre-pressing insert and using the pressing and forming part on the pre-pressing insert for bending and pressing forming. It improves the pass rate of bending angle in the mass production of stainless steel products using continuous dies, ensures the dimensional stability of the product during bending, and solves the problem of hole bending when bending products with large holes, thus further improving product quality.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] As a further improvement of this utility model, the connecting part is provided with a retaining edge; the lower template is provided with a placement groove, and the placement groove is provided with a retaining groove that matches the retaining edge.

[0011] As a further improvement of this utility model, the crimping forming part includes a tapered section and a flat-top section; wherein:

[0012] The tapered section has a frustum-shaped cross-section with a top angle ranging from 92° to 95°.

[0013] The flat-top section is located at the top of the tapering section, and the length of the flat-top section is 0.2 mm.

[0014] The height of the crease forming section is T / 2, where T is the thickness of the material to be processed.

[0015] As a further improvement of this utility model, there is a gap between the bottom of the tapered section and the top of the lower template.

[0016] As a further improvement of this utility model, the number of pre-compression line inserts is at least one, and all the pre-compression line inserts are arranged sequentially at intervals.

[0017] As a further improvement of this utility model, it also includes a molding insert and a pressing rib; wherein:

[0018] The forming insert is located downstream of the pre-pressing line insert and is fixed inside the lower template;

[0019] The top of the molding insert is flush with the top of the lower template.

[0020] The pressure rib is located at the top of the forming insert and near the side of the upper mold bending insert.

[0021] This invention prevents springback and incomplete bending by adding pressure ribs to the forming insert. In the conventional bending process of stainless steel products, the product's neutral layer bending area has an expansion compensation value. By adding pressure lines in the middle and pressure ribs to the forming insert at the forming part, the product's bending area is pre-pressed by a pressure line insert before bending by the upper die bending insert. Then, the product moves to the upper die bending insert, and the upper die slide continues to descend. The stripper plate and the lower die plate are completely closed. The upper die slide continues to descend, and the forming insert on the lower die plate is in a fully pressing state with the material. The upper die bending insert falls out of the stripper plate and the bending work begins. When the upper die slide reaches the bottom dead center of the die, the bending insert completes the bending work, and at the same time, the forming insert pressure rib is fully pressed into 1 / 3 of the product, thus effectively preventing the bending edge from springing back. Therefore, by changing the bending method and adding a bending pressure line structure, the problem of insufficient springback bending when bending stainless steel products and extra-hard materials downwards in sheet metal molds was solved. When the product has a hole, this method can completely solve the problem of the product hole bending caused by bending and pulling material, thereby improving the product qualification rate, increasing productivity, and effectively eliminating the mold repair problem caused by the mold maker due to the bending angle dimension being out of tolerance and the hole bending.

[0022] As a further improvement of this utility model, the width of the reinforcing rib is 0.8-1.2mm; the height of the reinforcing rib is 0.2mm; and the end of the reinforcing rib is a beveled structure with an outer angle of 135°.

[0023] As a further improvement of this utility model, the upper mold bending insert is provided with a boss that matches the pressing rib on the side facing the forming insert.

[0024] As a further improvement of this utility model, when there are two pre-pressing line inserts, one of the molding inserts is provided with an avoidance groove on one side of its top.

[0025] The present invention provides a continuous mold, including the aforementioned insert component.

[0026] This invention relates to a progressive die, which, through the matching insert assembly, uses a pre-forming insert for pre-forming the material by pressing the lines. This pre-deformation eliminates internal stress, reduces resistance during bending, and improves bending accuracy. It also prevents material stretching deformation during bending. During bending, the forming insert, with its added ribs, reduces springback, further enhancing bending accuracy. The bent edge of the product smoothly achieves the required bending angle based on the indentation of the bending lines and the ribs of the forming insert. This invention differs from conventional bending dies. For stainless steel products, where small angle tolerances and high requirements are necessary, this invention adds bending lines and ribs to the forming insert before bending. This structure solves the problem of springback and incomplete bending of stainless steel products in sheet metal bending dies. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the continuous mold of this utility model during mold closing;

[0029] Figure 2 This is a schematic diagram of the structure of the continuous mold of this utility model when it is opened;

[0030] Figure 3 yes Figure 1 Enlarged view of part A in the middle;

[0031] Figure 4 yes Figure 1 Enlarged view of part B in the middle;

[0032] Figure 5This is a front view of the upper die bending insert in the insert assembly of this utility model;

[0033] Figure 6 This is a front view of the pre-pressed wire insert in the insert assembly of this utility model;

[0034] Figure 7 yes Figure 6 Enlarged view of part C;

[0035] Figure 8 This is a front view of one embodiment of the molded insert in the insert assembly of this utility model;

[0036] Figure 9 yes Figure 8 Enlarged view of part of D;

[0037] Figure 10 This is a front view of another embodiment of the molding insert in the insert assembly of this utility model;

[0038] Figure 11 This is a schematic diagram of the structure of the pre-pressed wire insert in the insert assembly of this utility model when there are two inserts;

[0039] Figure 12 This is a schematic diagram of the structure of the insert assembly of this utility model when there are two molded inserts;

[0040] Figure 13 This is a three-dimensional structural diagram of the upper mold bending insert in the insert assembly of this utility model;

[0041] Figure 14 This is a schematic diagram of the structure of the insert assembly of this utility model when there are two upper die bending inserts;

[0042] Figure 15 This is a partial structural diagram of the forming insert and the upper die bending insert in the insert assembly of this utility model when bending the product.

[0043] In the diagram: 1. Preload line insert;

[0044] 11. Connecting parts;

[0045] 12. Crimping forming section;

[0046] 13. Edge trimming;

[0047] 14. Flat-topped section;

[0048] 2. Molding insert;

[0049] 21. Ribs;

[0050] 22. Limiting groove;

[0051] 23. Clearance groove;

[0052] 3. Boss;

[0053] 10. Upper mold base;

[0054] 20. Upper pad;

[0055] 30. Install the splint;

[0056] 40. Stop plate;

[0057] 50. Stripping plate;

[0058] 60mm strip;

[0059] 70. Download template;

[0060] 80. Lower pad;

[0061] 90. Lower mold base;

[0062] 100. Lower foot;

[0063] 110. Lower support plate;

[0064] 120. Upper mold bending insert;

[0065] 130. Top rod;

[0066] 140. Floating material blocks;

[0067] 150. Scraper block. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0069] like Figures 1-15 As shown, this utility model addresses the challenges of forming various difficult-to-form materials, particularly stainless steel, which exhibits high springback, short bending edges, and a distance of less than three times the material thickness between the bending edge and the feature hole. This makes it difficult to ensure stable product angles and proper hole shaping during bending. Therefore, based on the characteristics of short bending edges, hole deformation, and high springback after bending, a solution is provided: an insert assembly for installation in a progressive die to bend and form stainless steel products. Figure 1The MM strip 60; specifically, the insert assembly includes a pre-pressing insert 1, a forming insert 2 and an upper die bending insert 120 installed in the lower template 70; the pre-pressing insert 1 is used to press a line at the product unfolding and bending point before forming, so as to pre-deform the material, reduce the resistance during bending, make the bending size more accurate, and prevent the material pulling deformation during bending.

[0070] Furthermore, the pre-pressing insert 1 includes a connecting portion 11 and a pressing forming portion 12; wherein:

[0071] The connecting part 11 is fitted inside the lower template 70;

[0072] At least a portion of the crease forming section 12 protrudes from the top of the lower template 70, thereby creases the MM strip 60 using the crease forming section 12.

[0073] The insert assembly provided by this utility model solves the problem of incomplete bending and springback of stainless steel products during high-speed production of sheet metal continuous dies by setting a pre-pressing insert 1 and using the pressing forming part 12 on the pre-pressing insert 1 for bending and pressing forming. It improves the pass rate of bending angle in the mass production of stainless steel products using continuous dies, ensures the dimensional stability of the product during bending, and solves the problem of hole bending when bending products with large holes, thus further improving product quality.

[0074] As a further improvement of this utility model, the connecting part 11 is provided with a retaining edge 13; the lower template 70 is provided with a placement groove, and a retaining groove adapted to the retaining edge 13 is provided in the placement groove; during installation, the connecting part 11 is placed in the placement groove and is engaged with the retaining groove through the retaining edge 13, thereby preventing the pre-pressing line insert 1 from coming out.

[0075] Furthermore, the crease forming section 12 includes a tapered section and a flat-top section 14; wherein:

[0076] The tapered section has a frustum-shaped cross-section with a top angle ranging from 92° to 95°. It's important to note that the angle is greater than 90° because when the product is bent, the pressure line needs to be 1 / 3T higher than the die surface. This means a concave line is created on the material, causing material to overflow. When bent at 90°, the overflowing material will resist each other. Only when the angle is greater than 90° will this resistance be prevented, resulting in more stable product dimensions after bending. By setting the angle between 92° and 95°, ① the material is pre-deformed, reducing bending resistance and making the bending dimensions more accurate. ② It prevents material stretching deformation during bending.

[0077] The flat-top section 14 is located at the top of the tapering section, and the length of the flat-top section 14 is 0.2 mm;

[0078] The height of the crease forming section 12 is T / 2, where T is the thickness of the material to be processed.

[0079] Furthermore, there is a gap between the bottom of the tapered section and the top of the lower template 70.

[0080] The interval can be 0.1 mm.

[0081] As a further improvement of this utility model, the number of preload line inserts 1 is at least one, for example, two; Figure 11 As shown, the two preloaded line inserts are spaced apart.

[0082] like Figures 1-15 As shown, as a further improvement of this utility model, it also includes a molding insert 2 and a pressing rib 21; wherein:

[0083] The molding insert 2 is located downstream of the pre-pressing line insert 1 and is fixed inside the lower template 70; the downstream referred to here means downstream along the material flow direction of the molding die.

[0084] The top of the molding insert 2 is flush with the top of the lower template 70; for example Figure 8 and Figure 10 As shown, a limiting groove 22 is provided on one side of the bottom of the molding insert 2. The limiting groove 22 is used to limit the lifting height of the scraper block 150.

[0085] The pressure rib 21 is set on the top of the forming insert 2 and is close to the side of the upper mold bending insert 120.

[0086] This invention prevents springback during bending by adding a pressure rib 21 to the forming insert 2. In the conventional bending process of stainless steel products, the product's neutral layer bending point has an expansion compensation value. By adding a pressure line in the middle and a pressure rib 21 to the forming insert 2 at the forming part, the product needs to be bent before the upper die bending insert 120 bends. Then the product moves to the upper die bending insert 120, the upper die slide continues to descend, the stripper plate 50 and the lower template 70 are completely closed, the upper die slide continues to descend, the forming insert 2 on the lower template 70 is in a fully pressing state with the material, the upper die bending insert 120 falls out of the stripper plate 50, and the bending work begins. When the upper die slide reaches the bottom dead center of the die, the bending insert completes the bending work, and at the same time the pressure rib 21 of the forming insert 2 is fully pressed into 1 / 3 of the product, thereby effectively preventing the bending edge from springing back. Therefore, by changing the bending method and adding a bending pressure line structure, the problem of insufficient springback bending when bending stainless steel products and extra-hard materials downwards in sheet metal molds was solved. When the product has a hole, this method can completely solve the problem of the product hole bending caused by bending and pulling material, thereby improving the product qualification rate, increasing productivity, and effectively eliminating the mold repair problem caused by the mold maker due to the bending angle dimension being out of tolerance and the hole bending.

[0087] As a further improvement of this utility model, the width of the pressure rib 21 is 0.8-1.2mm; the height of the pressure rib 21 is 0.2mm; and the end of the pressure rib 21 is a beveled structure with an outer angle of 135°. The outer angle of the beveled structure of 135° here is the optimal value obtained through multiple experiments. With this angle setting, the pressure rib is not easy to crack when the molding insert is working for a long time.

[0088] As a further improvement of this utility model, the upper mold bending insert 120 is provided with a boss 3 that matches the pressure rib 21 on the side facing the forming insert 2.

[0089] like Figure 12 As shown, as a further improvement of this utility model, when there are two pre-pressing inserts 1, one of the forming inserts 2 has a clearance groove 23 on one side of its top. The clearance groove 23 is provided to prevent interference at the previous bend when bending one side and then bending the other side. Figure 15 As shown.

[0090] It should be noted that, in this embodiment, the position and size requirements for the pressure lines are as follows:

[0091] 1. The pressure line should be placed between the inner and outer broken lines, at 1 / 2 of the compensation coefficient, which is the middle position between the inner and outer broken lines;

[0092] 2. The length of the pressing line should be about 1mm less than the material edge and adjusted to an integer, that is, the two ends of the pressing line should be 1mm away from the material edge; the length of the flat top section 14 of the pre-pressing line inlet is 0.2mm, and the included angle of the top of the tapered section is between 92° and 95°.

[0093] The height of the pre-pressing line insert is taken as {H+(T / 2 - 0.1)}, where T is the thickness of the material to be processed, which in this embodiment is the thickness T of the MM strip 60; H is the height of the lower template 70; the bottom of the pressing forming part 12 of the pre-pressing line insert 1 should be 0.1mm lower than the upper surface of the lower template 70, that is: the height of the connecting part is equal to the height of the lower template - 0.1mm, i.e., H-0.1;

[0094] The forming insert has a pressure rib 21, which reduces the springback during bending when the mold is working, making the bending size more accurate and reducing the material deformation caused by bending.

[0095] Dimensional requirements for rib 21:

[0096] The width of the working part of the rib 21 is 0.8~1.2m, and the height is 0.2mm. When the material thickness T < 0.8mm, the width of the rib 21 is 0.8mm; when the material thickness 0.8mm ≤ T < 1.2mm, the width of the rib 21 is 1.0mm; when the material thickness T ≥ 1.2mm, the width of the rib 21 is 1.2mm.

[0097] like Figure 1 and Figure 2 As shown, the present invention provides a continuous mold including the aforementioned insert component.

[0098] Furthermore, the progressive die also includes an upper die holder 10, an upper backing plate 20, an upper clamping plate 30, a stop plate 40, a stripper plate 50, a lower die plate 70, a lower backing plate 80, a lower die holder 90, a lower pad foot 100, a lower support plate 110, an upper die bending insert 120, an ejector pin 130, a floating block 140, and a scraper block 150.

[0099] The pre-pressing line insert 1 (fixed on the hanging platform), the forming insert 2 (fixed with screws), the scraper block 150 (fixed on the hanging platform), and the floating block 140 (fixed on the hanging platform) are assembled on the lower template 70;

[0100] The push rod 130 is assembled on the stripper plate 50, and the stripper plate 50 is countersunk and fixed.

[0101] The upper die bending insert 120 is assembled on the upper clamping plate 30 and fixed with screws.

[0102] The stripper plate 50 has a stroke of 8mm. The upper mold base 10, upper clamping plate 30, stop plate 40, stripper plate 50 and their components are collectively referred to as the upper mold. The distance between the stop plate 40 and the upper clamping plate 30 in the open state is called the stroke of the stripper plate 50. The sum of the upper mold base 10, upper pad 20, upper clamping plate 30, stop plate, stripper plate 50, lower template 70, lower pad 80, lower mold base 90, lower support foot 100, and lower support plate 110 is called the mold closing height. The lower template 70, lower pad 80, lower mold base 90, lower support foot 100, lower support plate 110 and their components are collectively referred to as the lower mold.

[0103] The mold is installed on the press. The mold closing height is adjusted to ensure that production begins when the mold is fully closed.

[0104] This invention relates to a progressive die, which, through the matching insert assembly, uses a pre-forming insert 1 for pre-forming the material by pressing the material. This pre-forming process deforms the material, eliminating internal stress and reducing resistance during bending, resulting in more accurate bending dimensions. It also prevents material stretching deformation during bending. During bending, the forming insert 2, with its pressure ribs 21, reduces springback, further enhancing bending accuracy. The bent edge of the product smoothly reaches the required bending angle based on the indentation of the bending press and the pressure ribs 21 of the forming insert 2. This invention differs from conventional bending dies. For stainless steel products, where small angle tolerances and high requirements are necessary, this invention adds bending presses and pressure ribs 21 to the forming insert 2 before bending. This structure solves the problem of springback and incomplete bending of stainless steel products in sheet metal bending dies.

[0105] The invention described above is a sheet metal bending die that performs a partial downward bending pre-pressing line and a forming insert 2 with a pressure rib 21 to prevent bending springback and incomplete bending. The structure includes one or more anti-bending springback structures, and also includes a sheet metal bending die that uses such a pressing line and pressure rib 21 structure to prevent bending springback.

[0106] In this embodiment, the manufacturing process of MM strip 60 includes the following steps:

[0107] Step 1: Punch the pilot hole;

[0108] The punch is mounted on the upper clamping plate 30, with a length of 60mm. The total length of the upper clamping plate 30 + stop plate 40 + stripper plate 50 is 57mm. When the stripper plate 50 is completely closed with the lower die plate 70 by 2mm, the material is completely pressed down. The upper die continues to descend. When the stripper plate 50 has traveled 3mm, the punch begins to contact the material. The upper die continues to descend. When the stripper plate 50 has traveled 0mm, the punch pierces through the material and protrudes 3mm beyond the stripper plate 50, completing the punching operation. The die moves upward, and the material is fed by the feeder one pitch.

[0109] Step 2: Apply bending and pressing lines to the product;

[0110] The process of pressing the product bending lines: The pre-pressing line insert 1 is assembled inside the lower template 70 and protrudes 0.3MM above the mold surface. When the stripper plate 50 and the lower template 70 are completely closed, the material is pressed into place, and the upper mold continues to move downward. When the upper mold stripper plate 50 is completely closed, the part of the pre-pressing line insert 1 that protrudes above the lower mold is completely pressed into the material, and the pressing work is completed.

[0111] Steps 3 and 4: Punching irregularly shaped holes;

[0112] Step 5: Trimming (product shape);

[0113] Step 6: Punching;

[0114] Steps 7 and 8: Bending;

[0115] The forming insert 2 is flush with the lower template 70, and the pressure rib 21 is about 0.2 mm higher than the lower template 70; the scraper block 150 is assembled inside the lower template 70 and is 5 mm lower than the forming insert 2 (the height of the scraper block 150 = forming insert - the height of the product bending wrapped in the forming insert - 1 mm).

[0116] The push rod 130 is installed inside the stripper plate 50 and extends approximately 5mm above the stripper plate 50 (the height of the push rod 130 above the stripper plate 50 = the thickness of the stripper plate 50 + the bending height of the product + 1mm).

[0117] The upper die bending insert 120 is assembled inside the upper clamping plate 30. The bending working part is 8mm high and 65mm long. The stripper plate 50 is flat in the open die state.

[0118] The upper die begins to descend until the ejector pin 130 and the scraper block 150 first contact each other. When the upper die stripper plate 50 and the lower die plate 70 are completely closed, the ejector pin 130 has pressed the scraper block 150 into the lower die plate 70 and cleared the gap. Under the pre-compression of the spring, the pressing force is sufficient to completely press the product down. When the upper die continues to descend to 3mm, the upper die bending insert 120 has begun to pre-deform the material. The pressing rib 21 on the forming insert 2 is pressed into the material. The upper die continues to descend until the upper die stripper plate 50 is completely closed. The upper die bending insert 120 is completely driven into the lower die and has a 1mm gap with the forming insert 2, completing the bending work.

[0119] As the upper mold continues to move upward, the stripper plate releases after a 50-degree stroke. The upper mold continues to move upward, and the scraper block at 150 degrees follows the ejector rod at 130 degrees to strip the material at a uniform speed, slowly ejecting the product from the lower mold so that the product is free of bending.

[0120] Step 9: Punching (blanking).

[0121] The bending process of this utility model is as follows:

[0122] refer to Figure 1 The lower die of the sheet metal bending continuous die is equipped with a pre-pressing line insert 1 (punch), a forming insert 2, a pressing rib 21, and a scraper block 150. Before the bending action of the lower die, a bending line is pressed into the material by 30% of the material thickness to reduce the resistance during bending and prevent the material from being pulled and deformed during bending. When the product is formed, small-angle bending can reach the corresponding angle without springback, thereby reducing the defect rate of the die production.

[0123] refer to Figure 2 In the open mold state, the pre-pressing insert 1 is 0.3 mm higher than the lower template 70 and is fixed inside the lower template 70; the upper mold bending insert 120 is fixed to the upper pad 20 by screws; in addition, the scraper block 150 is raised to a certain height under the action of the ejector pin spring and is flush with the lower template 70. During operation, the stripper plate 50 is fixed to the ejector rod 130 and first contacts the scraper block 150. As the mold slowly closes, the scraper block 150 is pressed into the lower template 70. The upper mold bending insert 120 begins to bend. After the work is completed, as the mold moves upward, the scraper block 150 moves upward in a regular manner under the restraint of the stripper plate 50 and the ejector rod 130 and completes the stripping work.

[0124] In the closed mold state, the stripper plate 50 moves downward under the force of the upper mold. At this time, the forming insert 2 and the stripper plate 50 are completely closed, and the pressure rib 21 on the top of the forming insert 2 presses into the material, making the material completely non-flowing. When the stop plate 40 and the upper clamping plate 30 are completely closed, the bending action begins until the upper and lower molds are closed. During this process, the bending edge will become uniform in bending direction due to the pre-pressing bending line and pressure rib 21. After the bending action is completed, the small-angle bend will not produce springback, achieving the expected effect.

[0125] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0126] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0127] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0128] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0129] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0130] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0131] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An insert component, characterized in that, Includes a pre-pressing thread insert installed within the lower template, the pre-pressing thread insert comprising a connecting portion and a pressing and forming portion; wherein: The connecting part is fitted inside the lower template; At least a portion of the crease forming section protrudes from the top of the lower template.

2. The insert assembly according to claim 1, characterized in that, The connecting part is provided with a retaining edge; the lower template is provided with a placement groove, and the placement groove is provided with a retaining groove that matches the retaining edge.

3. The insert component according to claim 1, characterized in that, The crease forming section includes a tapering section and a flat-top section; wherein: The tapered section has a frustum-shaped cross-section with a top angle ranging from 92° to 95°. The flat-top section is located at the top of the tapering section, and the length of the flat-top section is 0.2 mm. The height of the crease forming section is T / 2, where T is the thickness of the material to be processed.

4. The insert assembly according to claim 3, characterized in that, There is a gap between the bottom of the tapered section and the top of the lower template.

5. The insert assembly according to claim 1, characterized in that, The number of pre-compression line inserts is at least one, and all the pre-compression line inserts are arranged sequentially at intervals.

6. The insert component according to any one of claims 1-5, characterized in that, It also includes molding inserts and ribs; among which: The forming insert is located downstream of the pre-pressing line insert and is fixed inside the lower template; The top of the molding insert is flush with the top of the lower template. The pressure rib is located at the top of the forming insert and near the side of the upper mold bending insert.

7. The insert assembly according to claim 6, characterized in that, The width of the reinforcing rib is 0.8-1.2mm; the height of the reinforcing rib is 0.2mm; and the end of the reinforcing rib is a beveled structure with an outer angle of 135°.

8. The insert assembly according to claim 6, characterized in that, The upper mold bending insert has a boss on the side facing the forming insert that matches the pressing rib.

9. The insert assembly according to claim 6, characterized in that, When there are two pre-pressing inserts, one of the molding inserts has a clearance groove on one side of its top.

10. A continuous modulus, characterized in that, Includes the insert component as described in any one of claims 1-9.

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