Vulcanizing machine

Abstract

The invention provides a vulcanizing machine, which is used for vulcanization molding of liquid silica gel or rubber, and comprises: a material pool unit, the top of which is provided with a groove, the bottom surface of the groove is provided with a plurality of spaced glue injection holes, and the hole diameter of the glue injection holes in the middle area of the bottom surface of the groove is different from the hole diameter of the glue injection holes in the edge area of the bottom surface of the groove; the feeding unit is arranged above the material pool unit, a boss facing the material pool unit and a feeding channel are arranged on the feeding unit, the boss is contained in the groove, a closed material groove is defined by the boss and the groove, and the feeding channel penetrates through the upper surface of the feeding unit and the boss from top to bottom and is communicated with the material groove; the mold is arranged below the material pool unit, and cavities in one-to-one correspondence with the glue injection holes are formed in the mold; and the liquid silica gel or rubber in the material groove is extruded through the relative movement of the boss and the groove, so that the liquid silica gel or rubber enters the cavity through the glue injection hole. The production efficiency of the silicone rubber product is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of rubber vulcanization molding, and in particular to a vulcanizing machine. Background Art

[0002] A vulcanizer is a machine that can vulcanize various rubber or silicone products. Commonly used in the prior art are liquid vulcanizers and solid vulcanizers. Liquid vulcanizers heat and melt solid silicone rubber, then feed the melted liquid silicone rubber into a mold cavity for vulcanization and molding. Solid vulcanizers cut solid silicone rubber and press it into the mold cavity for vulcanization and molding.

[0003] However, no matter which molding method is used, there are currently problems of low production efficiency and high production costs. Summary of the Invention

[0004] In order to solve at least one of the above problems, the present application provides a vulcanizing press.

[0005] The present application provides a vulcanizing machine, which is used for vulcanization molding of liquid silicone or rubber, and includes:

[0006] A material pool unit, wherein a groove is formed on the top of the material pool unit, and a plurality of glue injection holes are provided on the bottom surface of the groove, wherein the diameter of the glue injection holes located in the middle area of ​​the bottom surface of the groove is different from the diameter of the glue injection holes located in the edge area of ​​the bottom surface of the groove;

[0007] A feeding unit, the feeding unit is arranged above the material pool unit, the feeding unit is provided with a boss facing the material pool unit and a feeding channel, the boss is received in the groove and enclosed with the groove to form a closed material trough, the feeding channel passes through the upper surface of the feeding unit and the boss from top to bottom, and the feeding channel has a lower opening on the boss to communicate with the material trough; and

[0008] A mold, the mold is arranged below the material pool unit, and the mold is provided with cavities corresponding to the injection holes one by one;

[0009] Among them, the position of the middle area corresponds to the position of the lower opening of the feeding channel on the boss, and the relative movement of the boss and the groove is used to squeeze the liquid silicone or rubber in the material trough so that the liquid silicone or rubber enters the mold cavity through the injection hole.

[0010] In one embodiment, the vulcanizer further includes an upper template, the feeding unit is fixed on the upper template, the feeding unit has a through hole from top to bottom, the through hole is connected to the feeding channel, and the through hole is used to install a feeding pipe connected to the feeder.

[0011] In one embodiment, the vulcanizer further includes a lower template, the mold is fixed on the lower template, and the lower template is driven up and down by a power member to push the mold to drive the material pool unit to move up and down, so that relative movement occurs between the boss and the groove.

[0012] In one embodiment, the lower end surface of the boss is an upwardly arched concave arch surface, and the bottom surface of the groove is also an upwardly arched convex arch surface, and the shape and size of the concave arch surface and the convex arch surface are matched.

[0013] In one embodiment, the boss includes an edge area and a middle area, the edge area of ​​the boss corresponds to the edge area of ​​the bottom surface of the groove, the middle area of ​​the boss corresponds to the middle area of ​​the bottom surface of the groove, the middle area of ​​the boss and the middle area of ​​the bottom surface of the groove are arranged in a plane, the edge area of ​​the boss is smoothly connected to the middle area of ​​the boss and presents a curved surface extending outward and downward, and the edge area of ​​the bottom surface of the groove is smoothly connected to the middle area of ​​the bottom surface of the groove and presents a curved surface extending outward and downward; or, the edge area and the middle area of ​​the boss together constitute a coherent curved surface, and the edge area and the middle area of ​​the bottom surface of the groove together constitute a coherent curved surface.

[0014] In one embodiment, the diameter of the glue injection holes in the edge region is larger than the diameter of the glue injection holes in the middle region.

[0015] In one embodiment, in the edge region, the diameter of the glue injection holes closer to the outer edge of the groove bottom surface is larger, and the diameter of the glue injection holes closer to the middle region is smaller.

[0016] In one embodiment, the feeding channel has a lower opening on the boss. In the middle area, the injection hole with a closer linear distance to the lower opening has a smaller aperture, and the injection hole with a farther linear distance from the lower opening has a larger aperture.

[0017] In one embodiment, the mold cavity includes a larger mold cavity and a smaller mold cavity, the larger mold cavity is arranged corresponding to the middle area, and the smaller mold cavity is arranged corresponding to the edge area.

[0018] In one embodiment, the vulcanizer further includes a baffle plate disposed between the mold and the material pool unit, the baffle plate including a middle area and an edge area, the middle area of ​​the baffle plate corresponding to the middle area of ​​the bottom of the groove, the edge area of ​​the baffle plate corresponding to the edge area of ​​the bottom of the groove, one of the middle area and the edge area of ​​the baffle plate has an aisle connecting the corresponding glue injection hole and the cavity, and the other of the middle area and the edge area of ​​the baffle plate does not have an aisle connecting the glue injection hole and the cavity.

[0019] Compared with the prior art, the embodiments of the present application provide a vulcanizer, in which liquid silicone or rubber is molded using a solid-state vulcanizer, thereby improving production efficiency and reducing production costs. The feed channel is designed to extend from top to bottom, so the feed channel can be designed to be shorter, and it is also beneficial to the cleaning of the feed channel. In addition, the bottom surface of the groove of the material pool unit is set to: the position of the middle area corresponding to the lower opening of the feed channel is slightly higher, while the position of the edge area is slightly lower, which is beneficial for the liquid silicone or rubber coming out of the feed channel to fill the material tank faster, saving the time of the entire vulcanization molding. In addition, the aperture of the injection hole and the flow channel in the edge area is larger than the aperture of the injection hole and the flow channel in the middle area, so that the cavity located on the side can match the feeding speed of the cavity in the middle position. In addition, in some embodiments, the cavity sizes are different, which is suitable for producing products or product samples of different sizes and shapes, broadening the use of the vulcanizer. Finally, by matching different baffles, the use of the vulcanizer is further broadened and its practicality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0021] Figure 1 is a perspective schematic diagram of a vulcanizing machine shown in the first embodiment of the present application;

[0022] Figure 2 yes Figure 1 Exploded schematic diagram of the vulcanizing press shown;

[0023] Figure 3 yes Figure 1 A schematic cross-sectional view of a vulcanizing press is shown;

[0024] Figure 4 2 is a schematic cross-sectional view of two different configurations of a vulcanizing machine according to a second embodiment of the present application;

[0025] Figure 5is a schematic cross-sectional view of a vulcanizing machine according to a third embodiment of the present application;

[0026] Figure 6 yes Figure 5 Schematic diagrams of three different settings of the glue injection hole of the vulcanizing press;

[0027] Figure 7 is a cross-sectional schematic diagram of a vulcanizing machine shown in a fourth embodiment of the present application;

[0028] Figure 8 Schematic diagram of the shielding plate provided in the embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] Please refer to Figures 1 to 3 FIG. 1 is a schematic diagram of a vulcanizer according to a first embodiment of the present application. The vulcanizer 10 includes an upper mold plate 11, a lower mold plate 12, a feed unit 13, a material pool unit 14, and a mold 15 disposed between the upper mold plate 11 and the lower mold plate 12. In this embodiment of the present application, to simplify the description, the male mold, the female mold, and the mold plate with the runner are collectively referred to as the mold. The schematic diagram also illustrates these three as a unified whole.

[0031] The feeding unit 13 is located above the material pool unit 14. The feeding unit 13 is provided with a boss 131 and a feeding channel 132 facing the material pool unit 14. The feeding channel 132 passes through the upper surface 133 of the feeding unit 13 upward and passes through the boss 131 downward. A groove 141 is provided on the top of the material pool unit 14. The groove 141 is provided corresponding to the boss 131, and the shape and size of the surface 1311 of the boss 131 facing the groove 141 are completely matched with the shape and size of the bottom surface 1411 of the groove 141. The boss 131 is telescopically embedded in the groove 141 and enclosed between the boss 131 and the groove 141 to form a closed material trough 16. The bottom of the material trough 16 is provided with a plurality of glue injection holes 1412 spaced apart from each other. The glue injection holes 1412 are connected to the material trough 16.

[0032] The mold 15 is disposed below the material pool unit 14. The mold 15 includes a cavity 151 and a flow channel 152 connected to the cavity 151. The flow channel 152 corresponds to the cavity 151 one-to-one, and the injection holes 1412 correspond to the flow channel 151 one-to-one.

[0033] In this embodiment, the feeding unit 13 is connected to the feeder 3 through the feeding tube 2. The upper template 11 is provided with a through hole 111 from top to bottom, and the feeding channel 132 is connected to the through hole 111. Specifically, in this embodiment, the upper opening 1321 of the feeding channel 132 is aligned with the through hole 111, one end of the feeding tube 2 is connected to the feeder 3, and the other end is installed in the through hole 111 of the upper template 11. The liquid silicone or rubber fed from the feeder 3 enters the feeding unit 13 through the feeding tube 2. Since the feeding channel 132 of the feeding unit 13 extends from top to bottom, the feeding channel 13 can be designed to be shorter, which is more conducive to the subsequent cleaning of the feeding channel 13.

[0034] A power member 4 is disposed below the lower mold plate 12. In this embodiment, the power member 4 is a hydraulic cylinder. The power member 4 pushes the lower mold plate 12, which in turn drives the mold 15 upward. The mold 15 then pushes the sump unit 14 upward. In this embodiment, the feed unit 13 is fixed to the upper mold plate 11 and its position is fixed. As the sump unit 14 moves upward, the relative movement between the boss 131 of the feed unit 13 and the sump unit 14 causes the boss 131 to squeeze the liquid silicone or rubber within the trough 14. Under the pressure of the boss 131, the liquid silicone or rubber flows through the injection hole 1412 and the runner 152 into the mold cavity 151, where it is vulcanized and formed.

[0035] A limiting unit 17 is further provided between the feeding unit 13 and the material pool unit 14. One end of the limiting unit 17 is mounted on the feeding unit 13, and the other end is mounted on the material pool unit 14. The limiting unit 17 limits the relative movement of the boss 131 and the groove 141 to ensure the stability of the relative movement of the boss 131 and the groove 141. In this embodiment, the limiting unit 17 is a spring. The feeding unit 13 is provided with a first limiting hole, which has an opening facing the material pool unit 14. The material pool unit 14 is provided with a second limiting hole, which has an opening facing the feeding unit 13. The spring is received in the first limiting hole at one end through the opening, and in the second limiting hole at the other end.

[0036] In one embodiment, there are multiple limiting units 17 , and the multiple limiting units 17 are arranged around the outside of the trough 16 .

[0037] In another embodiment, the power part 4 can also be arranged above the upper template 11, and the feeding unit 13 is driven downward by pushing the upper template 11, so that relative movement is formed between the boss 131 and the groove 141, and the boss 131 squeezes the liquid silicone or rubber in the material trough 16, so that the liquid silicone or rubber enters the cavity 151 in the mold 15 for vulcanization molding.

[0038] See also Figure 4 , which is a cross-sectional schematic diagram of a vulcanizer provided in the second embodiment of the present application.

[0039] In this embodiment, if Figure 4 As shown in part (a), the vulcanizer 20 is substantially the same as the vulcanizer 10 in the first embodiment, except that, whereas in the first embodiment, the lower end surface of the boss 131 of the feeding unit 13 of the vulcanizer 10 is flat, and the bottom surface 1411 of the groove 141 of the material tank unit 14 is also flat, in the second embodiment, the lower end surface 2311 of the boss 231 of the feeding unit 23 of the vulcanizer 20 is curved, and the bottom surface 2411 of the groove 241 of the material tank unit 24 is also curved. Specifically, the lower end surface 2311 of the boss 231 is an upwardly arched concave surface with a lower edge region 2311a and a higher middle region 2311b. The middle region 2311b corresponds to the lower opening 232 of the feeding channel 23. The bottom surface 2411 of the groove 241 is also an outward convex arched surface with the edge region 2411a being lower and the middle region 2411b being higher, and arching upward. The shape and size of the inward concave arched surface match the shape and size of the outward convex arched surface. In one embodiment, the middle regions 2311b and 2411b are planes, and the edge regions 2311a and 2411a are connected to the middle regions 2311b and 2411b respectively, and there is a smooth transition between the edge region 2311a and the middle region 2311b, and between the edge region 2411a and the middle region 2411b, and the edge regions 2311a and 2311b are curved surfaces extending outward and downward. In another embodiment, please refer to Figure 4 As shown in part (b), the middle regions 2311b and 2411b also present curved surfaces extending outward and downward, and the middle region 2311b and the edge region 2311a, and the middle region 2411b and the edge region 2411a respectively form continuous curved surfaces.

[0040] In the second embodiment, the bottom surface 2411 of the groove 241 of the material pool unit 24 is set to an arched surface with the middle area 2411b slightly higher and the edge area 2411a slightly lower. The middle area 2411b is set corresponding to the lower opening 232 of the feeding channel 23. This is conducive to the liquid silicone or rubber coming out of the feeding channel 23 to fill the material trough 26 faster, saving the time of the entire vulcanization molding.

[0041] See also Figure 5 , which is a schematic cross-sectional view of a vulcanizing machine provided in the third embodiment of the present application.

[0042] In this embodiment, the vulcanizer 30 is roughly the same as the vulcanizer 10 in the first embodiment. The difference is that in the vulcanizer 10 in the first embodiment, the aperture of the glue injection hole 1412 at the bottom of the material trough 16 is uniform, while in the third embodiment, the aperture of the glue injection hole 3412 at the bottom of the material trough 36 of the vulcanizer 30 is not uniform. Specifically, the cross-sectional size (aperture) of the glue injection hole 3412 located in the edge area 3411a of the bottom surface 3411 of the groove 341 is larger than the cross-sectional size (aperture) of the glue injection hole 3412 located in the middle area 3411b of the bottom surface 3411 of the groove 341 at the same height position.

[0043] In this embodiment, the cross-sectional size (aperture) of each flow channel 352 matches the cross-sectional size (aperture) of the corresponding injection hole 3412. The configuration of the flow channel 352 can refer to the configuration of the injection hole 3412, and the description is omitted here.

[0044] In one embodiment, Figure 6 As shown in part (a), taking each glue injection hole 3412 as a cylindrical hole with a constant diameter as an example, the diameters of the glue injection holes 3412 in the middle area 3411b are consistent, the diameters of the glue injection holes 3412 in the edge area 3411a are consistent, and the diameters of the glue injection holes 3412 in the edge area 3411a are larger than the diameters of the glue injection holes 3412 in the middle area 3411a.

[0045] In another embodiment, Figure 6 As shown in part (b), taking each glue injection hole 3412 as a cylindrical hole with a constant diameter as an example, the diameters of the glue injection holes 3412 in the middle area 3411b are consistent, the diameters of the glue injection holes 3412 in the edge area 3411a are larger than the diameters of the glue injection holes 3412 in the middle area 3411b, and the closer the glue injection holes 3412 in the edge area 3411a are to the outer edge of the bottom surface 3411 of the groove 341, the larger their diameters are, and the closer they are to the middle area 3411b, the smaller their diameters are.

[0046] In yet another embodiment, Figure 6 As shown in part (c), assuming each injection hole 3412 is a cylindrical hole with a constant diameter, the diameter of the injection hole 3412 in the edge region 3411a is larger than the diameter of the injection hole 3412 in the middle region 3411b. The diameter of the injection hole 3412 in the edge region 3411a increases as it approaches the outer edge of the bottom surface 3411 of the groove 341, while the diameter decreases as it approaches the middle region 3411b. The diameter of the injection hole 3412 in the middle region 3411b increases as the linear distance from the lower opening 332 of the feeding channel 33 increases, and vice versa.

[0047] In the third embodiment, by changing the cross-sectional dimensions of the injection hole and its corresponding flow channel, the cross-sectional dimensions of the injection hole 3412 and the flow channel 352 in the edge area 3411a away from the lower opening 332 of the feeding channel 33 are made larger than the cross-sectional dimensions of the injection hole 3412 and the flow channel in the middle area 3411b close to the lower opening 332 of the feeding channel 33. This is beneficial in balancing the time for the liquid silicone or rubber coming out of the feeding channel 23 to enter the cavity 351 from different areas of the groove 341 (the middle area 3411b and the edge area 3411a), so that the cavity located on the side matches the feeding speed of the cavity in the middle position.

[0048] See also Figure 7 , which is a schematic cross-sectional view of a vulcanizing machine provided in the fourth embodiment of the present application.

[0049] In this embodiment, the vulcanizer 40 is substantially identical to the vulcanizer 10 of the first embodiment. The difference is that, whereas in the first embodiment, the size and shape of the cavity 151 in the mold 15 of the vulcanizer 10 are uniform, in the fourth embodiment, the size and shape of the cavity 451 in the mold 45 of the vulcanizer 40 are not completely uniform, allowing for the molding of products of varying sizes and / or shapes. This allows for the production of products or product prototypes of varying sizes and shapes, broadening the application of the vulcanizer. For example, the size / volume of the cavity 451 located in the middle region 453 is larger than the size / volume of the cavity 451 located in the edge region 454. Accordingly, to ensure that the cavities 451 of varying sizes are filled in approximately equal amounts of time and to prevent underfilling of the larger cavity 451, the flow channel 452 and injection port 4412 corresponding to the larger cavity 451 are also enlarged. This allows more liquid silicone or rubber to enter the cavity 451 per unit time.

[0050] It can be understood that in other embodiments, the larger cavity 451 can also be arranged in other areas, such as the edge area 454. In this case, corresponding to the larger cavity 451, the size of its flow channel 452 and the injection hole 4412 can also be larger, that is, the size of the flow channel 452 and the injection hole 5412 required when the cavity 451 is set in the middle area 453 is larger.

[0051] It is understandable that in other embodiments, the mold is not provided with a runner, and the cavity on the mold is located on the upper surface of the mold and is directly connected to the glue injection holes in a one-to-one correspondence.

[0052] In one embodiment, when only certain cavities or types of cavities are needed and other cavities are not used, a baffle can be clamped between the material pool unit and the mold and detachably fixed to the mold or material pool unit by existing conventional means, such as threaded connection or other methods.

[0053] See also Figure 8 , which is a three-dimensional schematic diagram of the shielding plate provided in an embodiment of the present application.

[0054] Figure 8 Part (a) shows a baffle 81, which includes a middle area 811 and an edge area 812. The middle area 811 corresponds to the middle area of ​​the material pool unit and the middle area of ​​the mold, and the edge area 812 corresponds to the edge area of ​​the material pool unit and the edge area of ​​the mold. The middle area 811 is provided with a passage 813 that runs through the upper and lower surfaces of the baffle 81. The passage 813 connects the injection holes in the middle area of ​​the material pool unit and the flow channel in the middle area of ​​the mold. The edge area 812 is not provided with a passage connecting the injection holes in the edge area of ​​the material pool unit and the flow channel in the edge area of ​​the mold, thereby shielding the cavities in the edge area of ​​the mold to avoid molding products in these cavities.

[0055] Figure 8 Part (b) shows another baffle 82, which includes a middle area 821 and an edge area 822. The middle area 821 corresponds to the middle area of ​​the material pool unit and the middle area of ​​the mold, and the edge area 822 corresponds to the edge area of ​​the material pool unit and the edge area of ​​the mold. The edge area 822 is provided with an aisle 823 that runs through the upper and lower surfaces of the baffle 82, and the aisle 823 connects the injection holes in the edge area of ​​the material pool unit and the flow channel in the edge area of ​​the mold. The middle area 822 is not provided with an aisle connecting the injection holes in the middle area of ​​the material pool unit and the flow channel in the middle area of ​​the mold, thereby shielding the cavity in the middle area of ​​the mold to avoid molding products in these cavities, which is suitable for the production of product samples.

[0056] It should be noted that, in this application, the middle area of ​​the groove refers to the area corresponding in position to the lower opening of the feed channel on the boss. If the lower opening of the feed channel on the boss does not correspond to the exact center of the trough, the middle area may not be the exact center area, and the middle area of ​​the groove bottom surface may not be the exact center area of ​​the groove bottom surface. In addition, the edge area refers to the area other than the middle area on the same surface or the same object.

[0057] It can be understood that, in the absence of conflicts or contradictions, the technical solutions provided in the above embodiments can be combined with each other to obtain new technical solutions, all of which are included in the scope of disclosure of this application.

[0058] In summary, the embodiments of the present application provide a vulcanizer, in which liquid silicone or rubber is molded using a solid-state vulcanizer, thereby improving production efficiency and reducing production costs. The feed channel is designed to extend from top to bottom, so the feed channel can be designed to be shorter, and it is also beneficial to the cleaning of the feed channel. In addition, the bottom surface of the groove of the material pool unit is set to: the position of the middle area corresponding to the lower opening of the feed channel is slightly higher, while the position of the edge area is slightly lower, which is beneficial for the liquid silicone or rubber coming out of the feed channel to fill the material tank faster, saving the time of the entire vulcanization molding. In addition, the aperture of the injection holes and the flow channel in the edge area is larger than the aperture of the injection holes and the flow channel in the middle area, so that the cavity located on the side can match the feeding speed of the cavity in the middle position. In addition, in some embodiments, the cavity sizes are different, which is suitable for producing products or product samples of different sizes and shapes, thereby broadening the use of the vulcanizer. Finally, by matching different baffles, the use of the vulcanizer is further broadened and its practicality is improved.

[0059] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vulcanizing press, characterized in that: The vulcanizing machine is used for vulcanization molding of liquid silicone or rubber, and the vulcanizing machine includes: A material pool unit, wherein a groove is formed on the top of the material pool unit, and a plurality of glue injection holes are provided on the bottom surface of the groove, wherein the diameter of the glue injection holes located in the middle area of ​​the bottom surface of the groove is different from the diameter of the glue injection holes located in the edge area of ​​the bottom surface of the groove; A feeding unit, the feeding unit is arranged above the material pool unit, the feeding unit is provided with a boss facing the material pool unit and a feeding channel, the boss is received in the groove and enclosed with the groove to form a closed material trough, the feeding channel passes through the upper surface of the feeding unit and the boss from top to bottom, and the feeding channel has a lower opening on the boss to communicate with the material trough; and A mold, the mold is arranged below the material pool unit, and the mold is provided with cavities corresponding to the injection holes one by one; Among them, the position of the middle area corresponds to the position of the lower opening of the feeding channel on the boss, and the relative movement of the boss and the groove is used to squeeze the liquid silicone or rubber in the material trough so that the liquid silicone or rubber enters the mold cavity through the injection hole.

2. The vulcanizing press according to claim 1, characterized in that It also includes an upper template, the feeding unit is fixed on the upper template, the feeding unit has a through hole from top to bottom, the through hole is connected to the feeding channel, and the through hole is used to install a feeding pipe connected to the feeder.

3. The vulcanizing press according to claim 1, characterized in that It also includes a lower template, the mold is fixed on the lower template, and the lower template is driven by a power piece to move up and down to push the mold to drive the material pool unit to move up and down, so that relative movement occurs between the boss and the groove.

4. The vulcanizing press according to claim 1, characterized in that The lower end surface of the boss is an upwardly arched concave arched surface, and the bottom surface of the groove is also an upwardly arched convex arched surface. The shape and size of the concave arched surface and the convex arched surface are matched.

5. The vulcanizing press according to claim 4, characterized in that: The boss includes an edge area and a middle area, the edge area of ​​the boss corresponds to the edge area of ​​the bottom surface of the groove, the middle area of ​​the boss corresponds to the middle area of ​​the bottom surface of the groove, the middle area of ​​the boss and the middle area of ​​the bottom surface of the groove are arranged in a plane, the edge area of ​​the boss is smoothly connected to the middle area of ​​the boss and presents a curved surface extending outward and downward, the edge area of ​​the bottom surface of the groove is smoothly connected to the middle area of ​​the bottom surface of the groove and presents a curved surface extending outward and downward; or, the edge area and the middle area of ​​the boss together constitute a coherent curved surface, and the edge area and the middle area of ​​the bottom surface of the groove together constitute a coherent curved surface.

6. The vulcanizing press according to claim 1, characterized in that The diameter of the glue injection holes in the edge area is larger than the diameter of the glue injection holes in the middle area.

7. The vulcanizing press according to claim 6, characterized in that In the edge region, the diameter of the glue injection holes closer to the outer edge of the bottom surface of the groove is larger, and the diameter of the glue injection holes closer to the middle region is smaller.

8. The vulcanizing press according to claim 7, characterized in that: The feeding channel has a lower opening on the boss. In the middle area, the closer the linear distance between the injection hole and the lower opening, the smaller the aperture of the injection hole, and the farther the linear distance between the injection hole and the lower opening, the larger the aperture of the injection hole.

9. The vulcanizer according to claim 1, wherein the cavity comprises a larger cavity and a smaller cavity, the larger cavity is arranged corresponding to the middle area, and the smaller cavity is arranged corresponding to the edge area.

10. The vulcanizing press according to claim 9, characterized in that It also includes a baffle plate placed between the mold and the material pool unit, the baffle plate includes a middle area and an edge area, the middle area of ​​the baffle plate is set corresponding to the middle area of ​​the bottom of the groove, and the edge area of ​​the baffle plate is set corresponding to the edge area of ​​the bottom of the groove. A passage is opened on one of the middle area and the edge area of ​​the baffle plate to connect the corresponding injection hole and the cavity, and the other one of the middle area and the edge area of ​​the baffle plate does not have a passage connecting the injection hole and the cavity.

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