Die and die cutting device for improving machining precision of foam

Abstract

The invention relates to a die and die cutting device for improving the machining precision of foam, and the die comprises an upper die which comprises an upper die body and a plurality of cutter lines arranged on the upper die body; the lower mold is arranged opposite to the upper mold; the knife line comprises a first knife line, a second knife line and a third knife line, the second knife line is movably mounted on the upper die body, and the second knife line and the first knife line are arranged in parallel; when the second knife line is mounted on the upper die body, the second knife line and the first knife line form a rectangular knife line; and during die cutting, the cutter line is used for punching foam arranged on the lower die. The die cutting device comprises a feeding assembly; a die cutting assembly; a waste discharge assembly; and a finished product winding assembly. Compared with the prior art, the foam punching precision is improved, the yield of foam products is increased, the foam edge deformation amount is reduced, and different punching requirements are met.

Description

Technical Field

[0001] The invention belongs to the technical field of die cutting, and in particular relates to a die and a die cutting device for improving the processing accuracy of foam. Background Art

[0002] The current die-cutting products in the electronics industry use substrate-free materials with high resilience and high ductility, which are better suitable for the attachment of electronic products to seal irregular surfaces. They can more efficiently meet the needs of more comprehensive high-reliability bonding for structural components that need to be sealed, waterproof and anti-sealed. At the same time, double-sided adhesives without substrates will also be used.

[0003] Traditional die-cutting tools are used to form integrated products with fixed dimensions when die-cutting composite materials of non-substrate foam and non-substrate adhesive.

[0004] The processing precision of thick foam without substrate of different ductility is low, and the thick foam (1.0-3.0MM) after die-cutting is seriously deformed, with the deformation reaching 0.3MM. The high-precision tolerance level of 0.08MM cannot be met, and the over-tolerance phenomenon after deformation of foams of different ductility cannot be effectively controlled.

[0005] Existing technologies such as Figure 8 As shown, the knife line 200 on the upper mold 100 is integrally formed and cannot be disassembled. After punching the foam, the edge of the foam is greatly deformed and the knife line cannot be adjusted. The mold can only be reopened, which is expensive. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a mold and a die-cutting device for improving the processing accuracy of foam.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A first aspect of the present invention provides a mold for improving the processing accuracy of foam, comprising:

[0009] An upper mold, comprising an upper mold body and a plurality of knife lines arranged on the upper mold body; and

[0010] A lower mold, arranged opposite to the upper mold;

[0011] The knife line includes:

[0012] A first knife line is installed on the upper mold body; and

[0013] A second knife line, which is movably mounted on the upper mold body, and the second knife line is arranged parallel to the first knife line;

[0014] Wherein, when the second knife line is installed on the upper mold body, the second knife line and the first knife line form a rectangular knife line;

[0015] During die-cutting, the knife line punches and cuts the foam arranged on the lower die.

[0016] Furthermore, the upper mold further comprises:

[0017] A sliding cavity is disposed inside the upper mold body; and

[0018] A sliding plate, which is arranged inside the sliding cavity;

[0019] A groove is formed on the upper surface of the upper mold body, and the second knife line is fixed on the upper surface of the sliding plate and protrudes from the groove;

[0020] A first threaded hole is formed on one side of the upper mold body, and a second threaded hole is formed on the sliding plate which has a thread opposite to that of the first threaded hole;

[0021] A third threaded hole is formed on one side of the upper mold body, and a fourth threaded hole having a thread opposite to that of the third threaded hole is formed on the sliding plate;

[0022] The sliding plate is controlled to slide inside the sliding cavity by screwing the screws into the first threaded hole and the second threaded hole, and by screwing the screws into the third threaded hole and the fourth threaded hole.

[0023] Furthermore, there are two first threaded holes, two second threaded holes, two third threaded holes, and two fourth threads.

[0024] Furthermore, the first knife line includes:

[0025] The first section is linear and disposed on the upper mold body;

[0026] A second section, which is in a straight line and is disposed at one end of the first section and vertically connected to the first section;

[0027] The third segment is in a straight line and is disposed at the other end of the first segment and has an angle a of 30° with the first segment; and

[0028] The fourth segment is in a straight line and is disposed at one end of the second segment and has an angle b of 30° with the second segment;

[0029] The second knife line comprises:

[0030] a fifth segment, which is straight and parallel to the first segment, and has the same length as the first segment; and

[0031] The sixth section is in a straight line and is disposed at one end of the fifth section and vertically connected to the fifth section. The length of the sixth section is the same as that of the second section.

[0032] Further, the first knife line protrudes in a direction away from the upper mold body;

[0033] The first knife line comprises:

[0034] A first knife line body, which is perpendicular to the upper mold body; and

[0035] A first knife line portion, which is triangular in shape and connected to the first knife line body;

[0036] The first knife line portion comprises:

[0037] A first straight line segment connected to the first knife line body; and

[0038] The first oblique edge segment forms an angle of 30° with the first straight line segment.

[0039] Furthermore, the second knife line protrudes in a direction away from the upper mold body;

[0040] The second knife line comprises:

[0041] A second knife line body, which is perpendicular to the upper mold body; and

[0042] A second knife line portion, which is triangular in shape and connected to the second knife line body;

[0043] The second knife line portion comprises:

[0044] A second straight line segment connected to the second knife line body; and

[0045] The second oblique edge segment forms an angle of 30° with the second straight line segment.

[0046] Furthermore, the knife lines are provided with two groups.

[0047] Furthermore, the upper mold and the lower mold are arranged opposite to each other and have the same shape.

[0048] Furthermore, the second knife line is detachably connected to the upper mold body.

[0049] A second aspect of the present invention provides a die-cutting device, comprising:

[0050] A feeding assembly, comprising a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller;

[0051] A die-cutting assembly, comprising a punching machine connected to a material feeding roller, and the above-mentioned mold for improving the processing accuracy of foam installed on the punching machine;

[0052] A waste discharge assembly, comprising a waste discharge roller connected to the punching machine, and a waste discharge roller drive motor drivingly connected to the waste discharge roller; and

[0053] The finished product winding assembly comprises a finished product winding roller connected to the waste discharge roller and a finished product winding drive motor connected to the finished product winding transmission.

[0054] The working principle of the present invention is as follows:

[0055] Among them, a knife line is arranged on the upper mold, wherein the knife line consists of a first knife line and a second knife line. The first knife line is installed on the upper mold body, and the first knife line can be detachably connected to the upper mold body. The first knife line can be changed according to the punching requirements of different foams. In practice, the second knife line is detachably installed on the sliding plate, and slides with the sliding plate in the sliding cavity of the upper mold body. Because the punching foam can be fine-tuned, and the knife line in the prior art is often fixed and cannot be fine-tuned, so defective products are often produced during punching.

[0056] The second knife line slides in the sliding cavity through the sliding plate, thereby forming a rectangular knife line with the first knife line, wherein, since the threads of the first threaded hole of the upper mold body and the second threaded hole of the sliding plate are opposite, the threads of the third threaded hole of the upper mold body and the fourth threaded hole of the sliding plate are opposite, the sliding plate is controlled to slide in the sliding cavity by screwing the first screw and the second screw in the threaded hole. This arrangement enables left and right and up and down fine-tuning functions when punching foam, and adjusts and compensates for out-of-tolerance dimensions.

[0057] In practice, the angle between the first straight line segment on the side of the first knife line and the first bevel segment is set to 30 degrees, and the angle between the second straight line segment on the side of the second knife line and the second bevel segment is set to 30 degrees. This setting makes the foam punching more precise, and the edge deformation of the foam after punching is reduced from 0.3mm to 0.05mm.

[0058] In fact, in a top view, the angle a between the third section of the first knife line and the first section is 30°, and the angle b between the fourth section and the second section is 30°. This setting also reduces the edge deformation when punching the foam.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present application controls the inner bevel size of the product by making the first straight line segment and the first bevel segment of the first knife line 30 degrees, and the second straight line segment and the second bevel segment of the second knife line 30 degrees, thereby effectively reducing the deformation and improving the consistency and precision of the product appearance.

[0061] The present application realizes that the second knife line is movable and adjustable, and can be disassembled and replaced to achieve effective and flexible adjustment of the margin of foams with different elongation characteristics according to the specific size excess, so that when the material properties change, the material properties can be adjusted accordingly to improve production stability and yield.

[0062] The foam punched in this application has high consistency and high yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 This is a schematic diagram of the structure of the upper mold in Example 1.

[0064] Figure 2 Schematic diagram of the sliding cavity structure of the upper mold in Example 1.

[0065] Figure 3 Schematic diagram of the sliding plate structure of the upper mold in Example 1.

[0066] Figure 4 This is a top view of the knife line of the upper mold in Example 1.

[0067] Figure 5 This is a side view of the first cutting line of the upper mold in Example 1.

[0068] Figure 6 This is a side view of the second cutting line of the upper mold in Example 1.

[0069] Figure 7 This is a schematic diagram of the structure of the lower mold in Example 1.

[0070] Figure 8 It is a structural schematic diagram of an upper mold in the prior art.

[0071] Numbers in the figure:

[0072] 1-upper mold, 101-upper mold body, 102-knife line, 103-first knife line, 104-second knife line, 105-first section, 106-second section, 107-third section, 108-fourth section, 109-fifth section, 110-sixth section, 111-first knife line body, 112-first knife line part, 113-first straight line segment, 114-first bevel segment, 115-second knife line body, 116-second knife line part, 117-second straight line segment, 118-second bevel segment, 119-sliding cavity, 120-sliding plate, 121-first threaded hole, 122-second threaded hole, 123-third threaded hole, 124-fourth threaded hole, 2-lower mold, 100-upper mold, 200-knife line. DETAILED DESCRIPTION

[0073] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0074] Features such as component models, material names, connection structures, control methods, etc. that are not clearly stated in this technical solution shall be deemed as common technical features disclosed in the prior art.

[0075] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0076] In the description of the present invention, "multiple" means two or more than two, unless otherwise specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a bolt connection or a welding connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In order to improve the accuracy of punching foam, improve the yield rate of foam products, reduce the deformation of foam edges, and adapt to different punching requirements, the present invention provides a mold for improving the processing accuracy of foam. The structure of the mold is shown in FIG. Figures 1 to 7 As shown, including:

[0078] An upper mold, comprising an upper mold body 101 and a plurality of knife lines 102 arranged on the upper mold body 101; and

[0079] A lower mold, arranged opposite to the upper mold;

[0080] The knife line 102 includes:

[0081] A first knife line 103, which is installed on the upper mold body 101; and

[0082] A second knife line 104, which is movably mounted on the upper mold body 101, and the second knife line 104 is arranged parallel to the first knife line 103;

[0083] When the second knife line 104 is installed on the upper mold body 101, the second knife line 104 and the first knife line 103 form a rectangular knife line 102;

[0084] During die-cutting, the knife line 102 punches and cuts the foam disposed on the lower die.

[0085] In some specific implementations, please refer to Figure 1 , Figure 2 and Figure 3 As shown, the upper mold also includes:

[0086] A sliding cavity 119 is disposed inside the upper mold body 101; and

[0087] A sliding plate 120, which is disposed inside the sliding cavity 119;

[0088] The upper surface of the upper mold body 101 is provided with a groove, and the second knife line 104 is fixed to the upper surface of the sliding plate 120 and protrudes from the groove;

[0089] A first threaded hole 121 is formed on one side of the upper mold body 101, and a second threaded hole 122 is formed on the sliding plate 120 with a thread opposite to that of the first threaded hole 121;

[0090] A third threaded hole 123 is formed on one side of the upper mold body 101, and a fourth threaded hole 124 having a thread opposite to that of the third threaded hole 123 is formed on the sliding plate 120;

[0091] The sliding plate 120 is controlled to slide inside the sliding cavity 119 by screwing the screws into the first threaded hole 121 and the second threaded hole 122 , and by screwing the screws into the third threaded hole 123 and the fourth threaded hole 124 .

[0092] For more specific implementations, please refer to Figure 1 , Figure 2 and Figure 3 As shown, there are two first threaded holes 121 , two second threaded holes 122 , two third threaded holes 123 , and two fourth threaded holes 124 .

[0093] In some specific implementations, please refer to Figure 1 and Figure 4 As shown, the first knife line 103 includes:

[0094] The first section 105 is linear and disposed on the upper mold body 101;

[0095] The second section 106 is in a straight line and is disposed at one end of the first section 105 and vertically connected to the first section 105;

[0096] The third segment 107 is in a straight line and is disposed at the other end of the first segment 105 and has an angle a of 30° with the first segment 105; and

[0097] The fourth section 108 is in a straight line and is disposed at one end of the second section 106 and has an angle b of 30° with the second section 106;

[0098] The second knife line 104 comprises:

[0099] a fifth segment 109 which is straight and parallel to the first segment 105 , and the length of the fifth segment 109 is the same as that of the first segment 105 ; and

[0100] The sixth section 110 is in a straight line shape and is disposed at one end of the fifth section 109 and vertically connected to the fifth section 109 . The length of the sixth section 110 is the same as that of the second section 106 .

[0101] In some specific implementations, please refer to Figure 1 and Figure 5 As shown, the first knife line 103 protrudes in a direction away from the upper mold body 101;

[0102] The first knife line 103 comprises:

[0103] A first knife line body 111 , which is perpendicular to the upper mold body 101 ; and

[0104] A first knife line portion 112, which is triangular in shape and connected to the first knife line body 111;

[0105] The first knife line portion 112 includes:

[0106] A first straight line segment 113 connected to the first knife line body 111; and

[0107] The first oblique edge segment 114 forms an angle of 30° with the first straight line segment 113 .

[0108] In some specific implementations, please refer to Figure 1 and Figure 6 As shown, the second knife line 104 protrudes in a direction away from the upper mold body 101;

[0109] The second knife line 104 comprises:

[0110] A second knife line body 115 , which is perpendicular to the upper mold body 101 ; and

[0111] The second knife line portion 116 is triangular in shape and connected to the second knife line body 115;

[0112] The second knife line portion 116 includes:

[0113] A second straight line segment 117 connected to the second knife line body 115; and

[0114] The second oblique edge segment 118 forms an angle of 30° with the second straight line segment 117 .

[0115] In some specific implementations, please refer to Figure 1 As shown, the knife lines 102 are provided in two groups.

[0116] In some specific implementations, please refer to Figure 1 and Figure 7 As shown, the upper mold and the lower mold are arranged opposite to each other and have the same shape.

[0117] In some specific implementations, please refer to Figure 1 As shown, the second knife line 104 is detachably connected to the upper mold body 101 .

[0118] The present invention also provides a die-cutting device, comprising:

[0119] A feeding assembly, comprising a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller;

[0120] A die-cutting assembly, which includes a punching machine connected to a material feeding roller, and a die for improving the processing accuracy of foam as described above is installed on the punching machine;

[0121] A waste discharge assembly, comprising a waste discharge roller connected to the punching machine, and a waste discharge roller drive motor drivingly connected to the waste discharge roller; and

[0122] The finished product winding assembly comprises a finished product winding roller connected to the waste discharge roller and a finished product winding drive motor connected to the finished product winding transmission.

[0123] The above embodiments may be implemented individually or in any combination of two or more.

[0124] The above implementation is described in more detail below in conjunction with specific examples.

[0125] Example 1

[0126] In order to improve the accuracy of punching and cutting foam, improve the yield rate of foam products, reduce the deformation of foam edges, and adapt to different punching requirements, this embodiment provides a mold for improving the processing accuracy of foam. Figures 1 to 7As shown, including:

[0127] An upper mold, comprising an upper mold body 101 and a plurality of knife lines 102 disposed on the upper mold body 101; and

[0128] A lower mold, which is arranged opposite to the upper mold;

[0129] The knife line 102 includes:

[0130] A first cutting line 103, which is installed on the upper mold body 101; and

[0131] A second knife line 104 is movably mounted on the upper mold body 101 , and the second knife line 104 is arranged parallel to the first knife line 103 ;

[0132] When the second knife line 104 is installed on the upper mold body 101, the second knife line 104 and the first knife line 103 form a rectangular knife line 102;

[0133] During die cutting, the knife line 102 punches and cuts the foam disposed on the lower die.

[0134] Please see again Figure 1 , Figure 2 and Figure 3 As shown, the upper mold also includes:

[0135] A sliding cavity 119 disposed inside the upper mold body 101; and

[0136] A sliding plate 120 disposed inside the sliding cavity 119;

[0137] The upper surface of the upper mold body 101 is provided with a groove, and the second knife line 104 is fixed to the upper surface of the sliding plate 120 and protrudes from the groove;

[0138] A first threaded hole 121 is formed on one side of the upper mold body 101, and a second threaded hole 122 is formed on the sliding plate 120 with a thread opposite to that of the first threaded hole 121;

[0139] A third threaded hole 123 is formed on one side of the upper mold body 101, and a fourth threaded hole 124 having a thread opposite to that of the third threaded hole 123 is formed on the sliding plate 120;

[0140] The sliding plate 120 is controlled to slide inside the sliding cavity 119 by screwing the screws into the first threaded hole 121 and the second threaded hole 122 , and by screwing the screws into the third threaded hole 123 and the fourth threaded hole 124 .

[0141] Please see again Figure 1 , Figure 2 and Figure 3As shown, there are two first threaded holes 121 , two second threaded holes 122 , two third threaded holes 123 , and two fourth threaded holes 124 .

[0142] Please see again Figure 1 and Figure 4 As shown, the first knife line 103 includes:

[0143] The first section 105 is linear and disposed on the upper mold body 101;

[0144] The second section 106 is in a straight line and is disposed at one end of the first section 105 and vertically connected to the first section 105;

[0145] The third section 107 is in a straight line and is disposed at the other end of the first section 105 and has an angle a of 30° with the first section 105; and

[0146] The fourth section 108 is in a straight line and is disposed at one end of the second section 106 and has an angle b of 30° with the second section 106;

[0147] The second knife line 104 includes:

[0148] a fifth section 109 which is straight and parallel to the first section 105 , and the length of the fifth section 109 is the same as that of the first section 105 ; and

[0149] The sixth section 110 is in a straight line shape and is disposed at one end of the fifth section 109 and vertically connected to the fifth section 109 . The length of the sixth section 110 is the same as that of the second section 106 .

[0150] Please see again Figure 1 and Figure 5 As shown, the first knife line 103 protrudes in a direction away from the upper mold body 101;

[0151] The first knife line 103 includes:

[0152] A first knife line body 111 , which is perpendicular to the upper mold body 101 ; and

[0153] The first knife line portion 112 is triangular in shape and connected to the first knife line body 111;

[0154] The first cutting line portion 112 includes:

[0155] A first straight line segment 113 connected to the first knife line body 111; and

[0156] The first oblique edge segment 114 forms an angle of 30° with the first straight line segment 113 .

[0157] Please see again Figure 1 and Figure 6As shown, the second knife line 104 protrudes in a direction away from the upper mold body 101;

[0158] The second knife line 104 includes:

[0159] A second knife line body 115 , which is perpendicular to the upper mold body 101 ; and

[0160] The second knife line portion 116 is triangular in shape and connected to the second knife line body 115;

[0161] The second knife line portion 116 includes:

[0162] A second straight line segment 117 connected to the second knife line body 115; and

[0163] The second oblique edge segment 118 forms an angle of 30° with the second straight line segment 117 .

[0164] Please see again Figure 1 As shown, there are two groups of knife lines 102 .

[0165] Please see again Figure 1 and Figure 7 As shown, the upper mold and the lower mold are arranged opposite to each other and have the same shape.

[0166] Please see again Figure 1 As shown, the second cutting line 104 is detachably connected to the upper mold body 101 .

[0167] The working principle of this embodiment is as follows:

[0168] See also Figures 1 to 7 , wherein a knife line 102 is arranged on the upper mold 1, wherein the knife line 102 consists of a first knife line 103 and a second knife line 104, the first knife line 103 is fixed on the upper mold body 101, and the first knife line 103 can be detachably connected to the upper mold body 101, and the first knife line 103 can be changed according to the punching requirements of different foams. In practice, the second knife line 104 is detachably installed on the sliding plate 120, and slides with the sliding plate 120 in the sliding cavity 119 of the upper mold body 101, because the punching foam can be fine-tuned, and the knife line in the prior art is often fixed and cannot be fine-tuned, so defective products are often produced during punching.

[0169] The second knife line 104 slides in the sliding cavity 119 through the sliding plate 120, thereby forming a rectangular knife line 102 with the first knife line 103, wherein, since the threads of the first threaded hole 121 of the upper mold body 101 and the second threaded hole 122 of the sliding plate are opposite, the threads of the third threaded hole 123 of the upper mold body 101 and the fourth threaded hole 124 of the sliding plate are opposite, the sliding plate 120 is controlled to slide in the sliding cavity 119 by screwing the first screw and the second screw into and out of the threaded hole. This arrangement enables left and right and up and down fine-tuning functions when punching foam, and adjusts and compensates for out-of-tolerance dimensions.

[0170] In practice, the angle between the first straight line segment 113 and the first bevel segment 114 on the side of the first knife line 102 is set to 30 degrees, and the angle between the second straight line segment 117 and the second bevel segment 118 on the side of the second knife line 104 is set to 30 degrees. This setting allows for higher precision in punching the foam, and the edge deformation of the foam after punching is reduced from 0.3mm to 0.05mm.

[0171] In fact, in a top view, the angle a between the third section 107 of the first knife line 103 and the first section 105 is 30°, and the angle b between the fourth section 108 and the second section 106 is 30°. This arrangement also reduces the edge deformation when punching the foam.

[0172] Example 2

[0173] This embodiment provides a die-cutting device, comprising:

[0174] A feeding assembly, comprising a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller;

[0175] A die-cutting assembly, comprising a punching machine connected to a material feeding roller, wherein a mold for improving the processing accuracy of foam, such as that in Example 1, is installed on the punching machine;

[0176] A waste discharge assembly, comprising a waste discharge roller connected to the punching machine, and a waste discharge roller drive motor drivingly connected to the waste discharge roller; and

[0177] The finished product winding assembly comprises a finished product winding roller connected to the waste discharge roller and a finished product winding drive motor connected to the finished product winding transmission.

[0178] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A mold for improving the processing accuracy of foam, It is characterized in that include: An upper mold (1), comprising an upper mold body (101) and a plurality of knife lines (102) arranged on the upper mold body (101); as well as A lower mold (2) arranged opposite to the upper mold (1); The knife line (102) comprises: A first cutting line (103) is installed on the upper mold body (101); and A second knife line (104) is movably mounted on the upper mold body (101), and the second knife line (104) is arranged in parallel with the first knife line (103); Wherein, when the second knife line (104) is installed on the upper mold body (101), the second knife line (104) and the first knife line (103) form a rectangular knife line (102); During die-cutting, the knife line (102) punches and cuts the foam arranged on the lower mold (2).

2. A mold for improving the processing accuracy of foam according to claim 1, It is characterized in that The upper mold (1) further comprises: a sliding cavity (119) disposed inside the upper mold body (101); and A sliding plate (120) disposed inside the sliding cavity (119); The upper surface of the upper mold body (101) is provided with a groove, and the second knife line (104) is fixed to the upper surface of the sliding plate (120) and protrudes from the groove; A first threaded hole (121) is formed on one side of the upper mold body (101), and a second threaded hole (122) having a thread opposite to that of the first threaded hole (121) is formed on the sliding plate (120); A third threaded hole (123) is formed on one side of the upper mold body (101), and a fourth threaded hole (124) having a thread opposite to that of the third threaded hole (123) is formed on the sliding plate (120); The sliding plate (120) is controlled to slide inside the sliding cavity (119) by screwing the screws into the first threaded hole (121) and the second threaded hole (122), and by screwing the screws into the third threaded hole (123) and the fourth thread (124).

3. A mold for improving foam processing accuracy according to claim 2, It is characterized in that There are two first threaded holes (121), two second threaded holes (122), two third threaded holes (123), and two fourth threads (124).

4. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The first knife line (103) comprises: The first section (105) is linear and is disposed on the upper mold body (101); A second section (106) is in a straight line and is disposed at one end of the first section (105) and vertically connected to the first section (105); a third section (107) which is in a straight line and is disposed at the other end of the first section (105) and has an angle a of 30° with the first section (105); and a fourth section (108) which is in a straight line and is disposed at one end of the second section (106) and has an angle b of 30° with the second section (106); The second knife line (104) comprises: a fifth section (109) which is straight and parallel to the first section (105), and the length of the fifth section (109) is the same as that of the first section (105); and The sixth section (110) is in a straight line and is disposed at one end of the fifth section (109) and vertically connected to the fifth section (109). The length of the sixth section (110) is the same as that of the second section (106).

5. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The first knife line (103) protrudes in a direction away from the upper mold body (101); The first knife line (103) comprises: A first knife line body (111), which is perpendicular to the upper mold body (101); and A first knife line portion (112) which is triangular in shape and connected to the first knife line body (111); The first knife line portion (112) comprises: A first straight line segment (113), which is connected to the first knife line body (111); and The first oblique edge segment (114) forms an angle of 30° with the first straight line segment (113).

6. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The second knife line (104) protrudes in a direction away from the upper mold body (101); The second knife line (104) comprises: A second knife line body (115) which is perpendicular to the upper mold body (101); and A second knife line portion (116) which is triangular in shape and connected to the second knife line body (115); The second knife line portion (116) comprises: A second straight line segment (117), which is connected to the second knife line body (115); and The second oblique edge segment (118) forms an angle of 30° with the second straight line segment (117).

7. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The knife lines (102) are provided with two groups.

8. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The upper mold (1) and the lower mold (2) are arranged opposite to each other and have the same shape.

9. A mold for improving foam processing accuracy according to claim 1, It is characterized in that The second knife line (104) is detachably connected to the upper mold body (101).

10. A die-cutting device, It is characterized in that include: A feeding assembly, comprising a material feeding roller and a material feeding roller driving motor drivingly connected to the material feeding roller; A die-cutting assembly, comprising a punching machine connected to a material feeding roller, and a mold for improving the processing accuracy of foam as described in any one of claims 1 to 9 installed on the punching machine; A waste discharge assembly, comprising a waste discharge roller connected to the punching machine, and a waste discharge roller drive motor drivingly connected to the waste discharge roller; and The finished product winding assembly comprises a finished product winding roller connected to the waste discharge roller and a finished product winding drive motor connected to the finished product winding transmission.

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