Flange gasket glue adding mold capable of achieving accurate positioning and attaching

Abstract

The utility model discloses a flange gasket glue adding mold capable of accurately positioning and fitting. The flange gasket glue adding mold comprises an upper mold assembly and a lower mold assembly, the upper die assembly comprises an upper die plate, and a plurality of upper die cavities are formed in the bottom face of the upper die plate. The lower die assembly comprises a lower die plate, and a plurality of lower die cavities corresponding to the upper die cavities are formed in the top face of the lower die plate. Wherein a plurality of positioning assemblies are further arranged between the upper mold plate and the lower mold plate, when the mold is closed, the upper mold plate and the lower mold plate are spliced with each other, and each positioning assembly positions a product framework between the upper mold cavity and the lower mold cavity to form a complete mold cavity. A plurality of positioning assemblies are arranged between the upper die plate and the lower die plate, each positioning assembly positions a product framework between the upper die cavity and the lower die cavity to form a complete die cavity, product forming can be accurately positioned, the product framework is tightly attached to the upper die plate and the lower die plate, and flash and material leakage are not prone to being generated. And high-quality products can be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of flange gasket gluing moulds, in particular to an accurately positioned and fitted flange gasket gluing mould. Background Art

[0002] When using flange gaskets, you need to add rubber rings to achieve sealing. If the rubber rings are separated from the flange gaskets, it is easy to cause the rubber rings to be misplaced, resulting in the flange being unable to seal and affecting its use. The rubber material is attached to the flange gasket frame so that the front and back sides of the flange gasket are bonded with the rubber material, and the flange gasket and the rubber material become one. After the rubber material is bonded, the position is fixed and the flange gasket will not shift when installed.

[0003] Due to its performance, flange gaskets require that the rubber material be attached to the frame in a very accurate position, which places extremely high demands on the production mold. The mold and flange gasket must be fitted with both accurate position and close fit.

[0004] After searching, no technical solution disclosed in the prior art regarding flange gasket glue adding mold was found. Utility Model Content

[0005] The purpose of the utility model is to provide a flange gasket glue adding mold with accurate positioning and fitting, accurately positioning the flange gasket product skeleton, the flange gasket product skeleton and the mold are tightly fitted, and the flange gasket product skeleton and the glue are bonded to form, so as to obtain high-quality flange gasket products.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an accurately positioned and fitted flange gasket glue adding mold, comprising an upper mold component and a lower mold component;

[0007] The upper mold assembly comprises an upper mold plate, and a plurality of upper mold cavities are formed on the bottom surface of the upper mold plate;

[0008] The lower mold assembly includes a lower mold plate, and a top surface of the lower mold plate is provided with a plurality of lower mold cavities corresponding to the upper mold cavities;

[0009] Among them, multiple positioning components are also arranged between the upper template and the lower template. When the mold is closed, the upper template and the lower template are assembled with each other, and each positioning component positions the product skeleton between the upper mold cavity and the lower mold cavity to form a complete mold cavity.

[0010] Optionally, the upper mold assembly also includes a top plate, which is inlaid with multiple glue nozzles, and the glue nozzles are provided with glue injection channels. The top surface of the upper mold plate is provided with glue nozzle grooves corresponding to the glue nozzles. When the mold is closed, the glue injection channels are connected to the complete mold cavity.

[0011] Optionally, the positioning assembly includes two positioning pins and one anti-misalignment pin, the positioning pin and the anti-misalignment pin are respectively connected to the lower template, and the top surface of the upper template is provided with a positioning pin hole and an anti-misalignment pin hole corresponding to the positioning pin and the anti-misalignment pin.

[0012] Optionally, a rounded surface is provided on the top of the positioning pin, and a beveled surface is provided on the top of the anti-misalignment pin.

[0013] Optionally, the locating pin includes a locating portion and a sliding portion, the locating portion has a circular cross-section perpendicular to the locating pin axis, and the sliding portion has a rhombus cross-section perpendicular to the locating pin axis, wherein the long axis of the rhombus is equal to the diameter of the circular cross-section of the locating portion, and the short axis of the rhombus is smaller than the diameter of the circular cross-section of the locating portion.

[0014] Optionally, a product prying groove is provided on the top surface of the lower mold plate at a position corresponding to the lower mold cavity; and a product prying groove is also provided on the bottom surface of the upper mold plate at a position corresponding to the upper mold cavity.

[0015] Optionally, the inner edge and outer edge of the upper mold cavity both protrude from the bottom surface of the upper mold plate, and the inner edge and outer edge of the lower mold cavity both protrude from the top surface of the lower mold plate; the inner side of the inner edge and the outer side of the outer edge are both provided with support surfaces.

[0016] Optionally, the inner side surfaces of the lower mold cavity and the upper mold cavity are arc surfaces.

[0017] Optionally, the top surface of the anti-error pin is connected with an insertion pin, and the bottom surface of the anti-error pin hole is provided with a corresponding insertion pin hole.

[0018] Optionally, at least two glue injection grooves are provided near the inner edges of the upper mold cavity and the lower mold cavity.

[0019] Beneficial effects of the utility model:

[0020] 1. The utility model is provided with a plurality of positioning components between the upper mold plate and the lower mold plate. Each positioning component positions the product skeleton between the upper mold cavity and the lower mold cavity to form a complete mold cavity. The product molding can be accurately positioned. The product skeleton fits tightly with the upper mold plate and the lower mold plate, and it is not easy to produce flash and leakage, so high-quality molding products can be achieved.

[0021] 2. The positioning assembly of the utility model adopts 2 or 3 positioning pins, and the sliding part of the positioning pin adopts a diamond structure. The long axis of the diamond is the same as the cross-sectional diameter of the positioning part, and the short axis is smaller than the cross-sectional diameter of the positioning part. Therefore, the positioning pin can accurately position the product skeleton while facilitating the removal and placement of the product skeleton, avoiding squeezing and damage to the inner or outer edges of the mold cavity when the product skeleton is taken and placed, preventing the collapse of the inner or outer edges, and improving the protection of the mold.

[0022] 3. The utility model provides a supporting surface on the inner or outer side of the mold cavity, which can improve the strength of the inner or outer side and reduce the collapse of the inner or outer side caused by extrusion and collision, thereby further improving the protection of the mold. At the same time, a circular arc surface is provided on the inner side of the mold cavity. The use of the circular arc surface can reduce the adhesion between the rubber and the mold cavity surface, facilitate product demolding, and improve product molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the appearance structure of a flange gasket gluing mold for accurate positioning and fitting of the utility model;

[0024] Figure 2 This is a schematic diagram of the exploded structure of a flange gasket gluing mold for accurate positioning and fitting according to the utility model;

[0025] Figure 3 This is a schematic diagram of a positioning component and a mold cavity structure of the utility model;

[0026] Figure 4 This is a schematic diagram of another positioning component and mold cavity structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the positioning pin structure of the utility model;

[0028] Figure 6 This is a cross-sectional schematic diagram of the positioning portion of the positioning pin of the utility model;

[0029] Figure 7 This is a cross-sectional schematic diagram of the sliding portion of the positioning pin of the utility model;

[0030] Figure 8 This is a schematic diagram of the skeleton structure of the utility model product;

[0031] Fig. 9 This is a schematic diagram of the top surface structure of the lower template of the utility model;

[0032] Fig.10 This is a schematic diagram of the bottom structure of the upper template of the utility model;

[0033] Fig.11 It is a schematic diagram of the cross-sectional structure of the mold cavity of the utility model.

[0034] 100, upper mold assembly; 110, upper mold plate; 111, positioning pin hole; 112, anti-error pin hole; 114, positioning column hole; 115, assembly groove; 116, residual material groove; 117, positioning anti-error block groove; 120, upper mold cavity; 121, inner edge; 121a, support surface; 121b, arc surface; 122, outer edge; 123, glue injection groove; 130, top plate; 131, step through hole; 140, glue nozzle; 141, glue injection channel; 150, lifting handle; 160, positioning column;

[0035] 200, lower mold assembly; 210, lower mold cavity; 220, lower mold plate; 221, product prying groove; 222, prying mold groove; 223, installation groove; 224, vent hole; 230, positioning error prevention block;

[0036] 300, positioning assembly; 310, positioning pin; 311, positioning portion; 311a, circular; 312, sliding portion; 312a, diamond; 313, rounded surface; 320, anti-mistake pin; 321, bevel surface; 322, insertion pin;

[0037] 400. Product skeleton. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] like Figure 1-Figure 11 As shown, the utility model discloses a flange gasket glue adding mold with accurate positioning and fitting, including an upper mold assembly 100 and a lower mold assembly 200.

[0040] Embodiment 1: Figure 2 , 3 As shown, the upper mold assembly 100 includes an upper mold plate 110 and a top plate 130. Two opposite sides of the top plate 130 are connected to a lifting handle 150, which is connected to an external lifting device (not shown) through the lifting handle 150. The top plate 130 is provided with a plurality of step through holes 131. The bottom of each step through hole 131 is embedded with a nozzle 140. Three positioning columns 160 are connected to the bottom surface of the top plate 130. The upper mold plate 110 and the lower mold plate 220 are provided with positioning column holes 114 corresponding to the positioning columns 160. When in use, the positioning columns 160 are inserted into the positioning column holes 114 to improve the accuracy of the top plate 130, the upper mold plate 110 and the lower mold plate 220 when they are assembled. The top surface of the upper mold plate 110 is provided with a nozzle groove corresponding to the nozzle 140.

[0041] When in use, the top plate 130 and the upper mold plate 110 can be connected by bolts through the assembly groove 115, so that the top plate 130 and the upper mold plate 110 become an assembled whole, and the glue nozzle 140 is provided with a glue injection channel 141, and the glue injection channel 141 is connected to the overall mold cavity. The glue passes through the glue nozzle 140 and flows through the glue injection channel 141 into the overall mold cavity to inject and mold the product. When the glue nozzle 140 is blocked, the top plate 130 and the upper mold plate 110 can be separated, which can facilitate the cleaning of the glue in the glue nozzle 140.

[0042] The bottom surface of the upper mold plate 110 is provided with a plurality of upper mold cavities 120; Fig. 9 , 10 The six shown can also be arranged according to needs. A residual material groove 116 is also opened at the edge of each upper mold cavity 120, and a lower mold cavity 210 corresponding to the upper mold cavity 120 is opened on the top surface of the lower mold plate 220; a positioning component 300 is also arranged between the upper mold plate 110 and the lower mold plate 220, and the positioning component 300 corresponds to the complete mold cavity formed by the upper mold plate 110 and the lower mold plate 220.

[0043] When in use, each positioning component 300 positions the product skeleton 400 between the upper mold cavity 120 and the lower mold cavity 210. When the upper mold plate 110 and the lower mold plate 220 are assembled together, they tightly squeeze the product skeleton 400 to form a complete mold cavity between the upper mold cavity 120, the lower mold cavity 210 and the product skeleton 400. The upper mold cavity 120 and the lower mold cavity 210 are connected to each other through the through holes on the product skeleton 400 and the gaps at the edges of the anti-error pins 320. After the glue is injected through the glue injection channel 141, it fills the complete mold cavity. The glue bonds the product skeleton 400 to form a finished product. The residual material groove 116 is connected to the upper mold cavity 120 to accommodate excess glue.

[0044] The lower template 220 is connected to three positioning error-proofing blocks 230, and the bottom surface of the upper template 110 is provided with three corresponding positioning error-proofing block grooves 117. When the upper template 110 and the lower template 220 are assembled, the positioning error-proofing blocks 230 are inserted into the positioning error-proofing block grooves 117, so as to further improve the assembly accuracy of the upper template 110 and the lower template 220 and improve the product molding quality.

[0045] A prying groove 222 is formed near the edge of the lower template 220 . When the upper template 110 and the lower template 220 are adhered to each other, the upper template 110 and the lower template 220 can be separated by prying at the prying groove 222 with a tool.

[0046] A mounting groove 223 is also provided at the edge of the lower template 220 , and the lower template 220 can be fixed on a machine platform (not shown) through the mounting groove 223 .

[0047] like Figure 3As shown, the structure of the positioning assembly 300 includes three positioning pins 310 and one anti-mistake pin 320. The top of the positioning pin 310 is provided with a rounded surface 313, the top of the anti-mistake pin 320 is provided with a beveled surface 321, and the top surface of the upper template 110 is provided with positioning pin holes 111 and anti-mistake pin holes 112 corresponding to the positioning pins 310 and the anti-mistake pin 320. When the mold is closed, the positioning pin 310 and the anti-mistake pin pass through the corresponding through holes of the product skeleton 400, and then are inserted into the positioning pin holes 111 and the anti-mistake pin holes 112. The positioning pin 310 can locate the position of the product skeleton 400, and the anti-mistake pin 320 can prevent the product from being reversed and mispositioned when the product skeleton 400 is placed. At the same time, there is a gap between the anti-mistake pin 320 and the product skeleton 400 to meet the needs of rubber flow product molding.

[0048] The three-point positioning of the three positioning pins 310 can accurately locate the position of the product frame 400. The rounded surface 313 facilitates the placement and removal of the product frame 400. The bevel surface 321 of the anti-error pin 320 can fit tightly with the anti-error pin hole 112 to prevent the rubber from leaking out. However, due to the differences in the specifications of the product frame 400, the three-point positioning may cause the product frame 400 to warp, so that the product frame 400 cannot fit closely with the upper template 110 and the lower template 220, which may easily cause the rubber to overflow, affecting the product molding quality. The warping of the product frame 400 is also likely to cause damage to the edge of the mold cavity.

[0049] Embodiment 2: Based on Embodiment 1, the positioning assembly 300 may also be used as follows Figure 4 The structure shown in the figure adopts two positioning pins 310 and one anti-misalignment pin 320 . The top of the positioning pin 310 is provided with a rounded surface 313 , and the top of the anti-misalignment pin 320 is provided with a beveled surface 321 .

[0050] The two positioning pins 310 can prevent the product frame 400 from warping. However, when the positioning pins 310 are cylindrical, the product frame 400 is easily stuck by the positioning pins 310 when the product frame 400 is taken out or placed.

[0051] Furthermore, using Figure 5 The positioning pin 310 structure shown in the figure includes a positioning portion 311 and a sliding portion 312. The positioning portion 311 is located at the lower part of the positioning pin 310 close to the lower template 220. The cross section of the positioning portion 311 perpendicular to the axis of the positioning pin 310 is circular 311a (as shown in FIG. Figure 6 When the product frame 400 is placed on the positioning pin 310, the circular column 311a of the positioning portion 311 can position the product frame 400 and maintain the accurate position of the product frame 400. The sliding portion 312 is located on the upper part of the positioning pin 310, and the cross-section of the sliding portion 312 perpendicular to the axis of the positioning pin 310 is a diamond 312a (as shown in FIG. Figure 7As shown), the major axis D1 of the rhombus 312a is equal to the diameter R1 of the circular cross section 311a of the positioning portion 311, and the minor axis D2 of the rhombus 312a is smaller than the diameter R1 of the circular cross section 311a of the positioning portion 311. The rhombus 312a column of the sliding portion 312 facilitates the placement and use of the product skeleton 400.

[0052] like Figure 5 As shown, the diamond-shaped 312a section at the upper end of the sliding portion 312 is smaller than the diamond-shaped 312a section at the lower end. The upper end of the diamond-shaped 312a column of the sliding portion 312 also has a rounded surface 313, which further facilitates the removal of the product skeleton 400.

[0053] Embodiment 3: Fig.11 As shown, on the basis of embodiment one or two, in order to ensure the airtightness of the complete mold cavity, the inner edge 121 and the outer edge 122 of the upper mold cavity 120 and the lower mold cavity 210 both protrude from the template surface, and the top surfaces of the inner edge 121 and the outer edge 122 have a smaller width. The smaller width is beneficial to the processing of flash of the molded product, but the smaller width of the top surfaces of the inner edge 121 and the outer edge 122 is also easily squeezed by the product skeleton 400, causing damage, resulting in the collapse of the inner edge 121 or the outer edge 122 of the mold cavity, affecting the molding quality of the product.

[0054] To prevent the inner edge 121 or the outer edge 122 of the mold cavity from collapsing, a support surface 121a can be set inside the inner edge 121 and outside the outer edge 122 of the mold. The support surface 121a is an inclined surface. Setting the support surface 121a can not only improve the strength of the inner edge 121 or the outer edge 122, but also facilitate mold milling.

[0055] like Fig. 9 , 10 As shown, a product prying groove 221 is provided at the top surface of the lower template 220 and the bottom surface of the upper template 110 corresponding to the position of the lower mold cavity 210. After the product is formed, the rubber and flash sometimes adhere to the mold, making it difficult to remove the product. A tool can be inserted into the product prying groove 221 to pry the product for easy removal. A vent hole 224 is also provided on the top surface of the lower template 220 to facilitate the discharge of compressed air between the molds when the molds are closed.

[0056] like Fig.11 As shown, when the product skeleton 400 and the rubber are bonded to each other in the mold, the rubber may adhere to the inner wall of the mold cavity. The inner side surfaces of the lower mold cavity 210 and the upper mold cavity 120 adopt arc surfaces 121b, which can reduce the adhesion of the rubber to the inner wall of the mold cavity and facilitate product demolding and removal.

[0057] Further, such as Figure 3 , 4As shown, the top surface of the anti-error pin 320 is connected with an insertion pin 322, and the bottom surface of the anti-error pin hole 112 is provided with a corresponding insertion pin hole. When in use, the insertion pin 322 is inserted into the insertion pin hole to assist in positioning the product skeleton 400, so that a gap of uniform width can be formed between the anti-error pin 320 and the through hole of the product skeleton 400, thereby improving the product molding quality.

[0058] Further, such as Fig. 9 , 10 As shown, the glue injection groove 123 of the product is arranged near the inner edge 121, and at least two are arranged, which can improve the uniformity of glue injection and improve the molding quality of the product.

[0059] When the mold of the utility model is used, the product skeleton 400 is placed between the upper mold cavity 120 and the lower mold cavity 210, and the product skeleton 400 is positioned by the positioning pin 310. The mold is closed, and the product skeleton 400 is tightly fitted to the inner edge 121 and the outer edge 122 of the upper mold cavity 120 and the lower mold cavity 210. The upper mold cavity 120, the lower mold cavity 210 and the product skeleton 400 form a complete mold cavity. The glue is injected from the glue nozzle 140 and enters the complete mold cavity along the glue injection channel 141. The glue is bonded to the product skeleton 400 to form a product. After cooling, the upper mold assembly 100 is lifted, the product is taken out, and the product processing is completed.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0061] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A flange gasket gluing mold with accurate positioning and fitting, characterized in that: It comprises an upper mold assembly (100) and a lower mold assembly (200); The upper mold assembly (100) comprises an upper mold plate (110), and a plurality of upper mold cavities (120) are formed on the bottom surface of the upper mold plate (110); The lower mold assembly (200) comprises a lower mold plate (220), and a top surface of the lower mold plate (220) is provided with a plurality of lower mold cavities (210) corresponding to the upper mold cavities (120); A plurality of positioning components (300) are arranged between the upper mold plate (110) and the lower mold plate (220). When the mold is closed, the upper mold plate (110) and the lower mold plate (220) are assembled with each other, and each positioning component (300) positions the product skeleton (400) between the upper mold cavity (120) and the lower mold cavity (210) to form a complete mold cavity.

2. The accurate positioning and fitting flange gasket gluing mold according to claim 1 is characterized in that: The upper mold assembly (100) further comprises a top plate (130), wherein the top plate (130) is inlaid with a plurality of glue nozzles (140), wherein the glue nozzles (140) are provided with glue injection channels (141), and the top surface of the upper mold plate (110) is provided with glue nozzle grooves corresponding to the glue nozzles (140), and when the mold is closed, the glue injection channels (141) are connected to the complete mold cavity.

3. The accurate positioning and fitting flange gasket gluing mold according to claim 1 is characterized in that: The positioning assembly (300) comprises two positioning pins (310) and one anti-misalignment pin (320), wherein the positioning pins (310) and the anti-misalignment pin (320) are respectively connected to the lower template (220), and the top surface of the upper template (110) is provided with a positioning pin hole (111) and an anti-misalignment pin hole (112) corresponding to the positioning pins (310) and the anti-misalignment pin (320).

4. The accurate positioning and fitting flange gasket gluing mold according to claim 3 is characterized in that: The top of the positioning pin (310) is provided with a rounded surface (313), and the top of the anti-misalignment pin (320) is provided with a beveled surface (321).

5. The accurate positioning and fitting flange gasket gluing mold according to claim 4 is characterized in that: The positioning pin (310) comprises a positioning portion (311) and a sliding portion (312); the cross section of the positioning portion (311) perpendicular to the axis of the positioning pin (310) is circular (311a); the cross section of the sliding portion (312) perpendicular to the axis of the positioning pin (310) is rhombus (312a), wherein the major axis D1 of the rhombus (312a) is equal to the diameter R1 of the circular (311a) cross section of the positioning portion (311), and the minor axis D2 of the rhombus (312a) is smaller than the diameter R1 of the circular (311a) cross section of the positioning portion (311).

6. The accurate positioning and fitting flange gasket gluing mold according to claim 1 is characterized in that: A product prying groove (221) is provided on the top surface of the lower mold plate (220) at a position corresponding to the lower mold cavity (210); and a product prying groove (221) is also provided on the bottom surface of the upper mold plate (110) at a position corresponding to the upper mold cavity (120).

7. The accurate positioning and fitting flange gasket gluing mold according to claim 1 is characterized in that: The inner edge (121) and the outer edge (122) of the upper mold cavity (120) both protrude from the bottom surface of the upper mold plate (110), and the inner edge (121) and the outer edge (122) of the lower mold cavity (210) both protrude from the top surface of the lower mold plate (220); and the inner side of the inner edge (121) and the outer side of the outer edge (122) are both provided with support surfaces (121a).

8. The accurate positioning and fitting flange gasket gluing mold according to claim 7, characterized in that: The inner side surfaces of the lower mold cavity (210) and the upper mold cavity (120) are arc surfaces (121b).

9. The accurate positioning and fitting flange gasket gluing mold according to claim 4, characterized in that: The top surface of the anti-error pin (320) is connected to an insertion pin (322), and the bottom surface of the anti-error pin hole (112) is provided with a corresponding insertion pin hole.

10. The accurate positioning and fitting flange gasket glue adding mold according to claim 1, characterized in that: At least two glue injection grooves (123) are provided near the inner edge (121) of the upper mold cavity (120) and the lower mold cavity (210).

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