Rubber sealing element mold for PEM electrolytic bath

Abstract

The utility model provides a rubber sealing element mould for a PEM electrolytic bath, which is characterized in that the lower end of a mould upper plate and the upper end of a mould lower plate are provided with bosses, the upper end of a first mould middle plate and the lower end of a second mould middle plate are provided with storage bins, the storage bins are provided with glue injection runners, and the bosses and the storage bins are positioned through concave-convex structures; sealing blocks are arranged at the lower end of the first mold middle plate and the upper end of the second mold middle plate, glue inlet sealing lines are arranged along the edges of the sealing blocks, a plurality of glue injection holes are formed in the glue inlet sealing lines, sealing grooves are formed in the upper end and the lower end of the metal base plate respectively, the sealing blocks and the sealing grooves are positioned through concave-convex structures, and rubber sealing lines are arranged along the edges of the sealing grooves. The glue inlet sealing line is matched with the rubber sealing line; according to the utility model, a multi-layer mould pressing transfer injection structure is adopted, the rubber is directly and precisely formed on a metal base material through a set runner in the vulcanization process only by putting the rubber into the stock bin, the thickness consistency is high, no slitter edge is generated, and the production efficiency and the performance of a sealing element are improved.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a rubber sealing die for a PEM electrolytic cell. Background Technology

[0002] Rubber seals are widely used in the automotive, aerospace, and construction industries due to their excellent sealing performance and weather resistance. Traditional rubber seal manufacturing methods typically use molding, which requires multiple steps, including the individual vulcanization of the rubber parts and subsequent assembly. The original molding method requires manual mechanical cutting and placement of the rubber, resulting in poor thickness consistency of the vulcanized products and a large amount of waste caused by overflow, requiring additional manual cleaning processes. This leads to low production capacity and significant dimensional fluctuations in the seals, resulting in poor dimensional consistency, which not only increases production costs but also leads to unstable sealing performance. Summary of the Invention

[0003] The purpose of this invention is to provide a rubber sealing mold for a PEM electrolytic cell.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A rubber sealing mold for a PEM electrolytic cell is characterized by comprising, from top to bottom, an upper mold plate, a first middle mold plate, a metal substrate, a second middle mold plate, and a lower mold plate. The lower end of the upper mold plate and the upper end of the lower mold plate are provided with bosses. The upper end of the first middle mold plate and the lower end of the second middle mold plate are provided with storage bins, each storage bin having a glue injection channel. The bosses and storage bins are positioned by a convex-concave structure. Sealing blocks are provided at the lower end of the first middle mold plate and the upper end of the second middle mold plate. A glue injection sealing line is provided along the edge of the sealing block, and the glue injection sealing line has several glue injection holes. Sealing grooves are provided at the upper and lower ends of the metal substrate. The sealing blocks and sealing grooves are positioned by a convex-concave structure. A rubber sealing line is provided along the edge of the sealing groove, and the glue injection sealing line cooperates with the rubber sealing line.

[0006] Furthermore, the injection hole is a tapered hole, and the inner diameter of the injection hole at the sealing structure end is larger than the inner diameter at the injection channel end.

[0007] Furthermore, the lower end of the upper mold plate and the upper end of the lower mold plate are respectively provided with four bosses, and the upper end of the first mold middle plate and the lower end of the second mold middle plate are respectively provided with four storage bins. The bosses and storage bins are L-shaped.

[0008] Furthermore, the sealing block includes a first sealing block, a second sealing block, a third sealing block, and a fourth sealing block. The first sealing block and the third sealing block are arranged diagonally, the second sealing block and the fourth sealing block are arranged diagonally, and the glue injection sealing line surrounds the outer periphery of the first sealing block and the third sealing block.

[0009] Furthermore, the sealing groove includes a first sealing groove, a second sealing groove, a third sealing groove, and a fourth sealing groove. The first sealing groove, the second sealing groove, the third sealing groove, and the fourth sealing groove are respectively positioned in conjunction with the first sealing block, the second sealing block, the third sealing block, and the fourth sealing block through a concave-convex structure. The rubber sealing line surrounds the outer periphery of the second sealing groove and the fourth sealing groove.

[0010] This invention is based on commonly used molding dies, and changes the original molding structure to a multi-layer molding transfer structure. Rubber is simply put into the hopper, and during the vulcanization process, the rubber is directly and precisely molded onto the metal substrate through the set flow channel. The thickness is highly consistent and no waste edges are generated, which improves production efficiency and sealing performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembly structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the assembly structure of the upper and lower end faces of the metal substrate of this utility model;

[0013] Figure 3 This is a schematic diagram of the mold assembly of this utility model.

[0014] Figure label:

[0015] 1. Mold upper plate, 2. First mold middle plate, 3. Metal base plate, 4. Second mold middle plate, 5. Mold lower plate

[0016] 6. Boss, 7. Injection hole, 8. Rubber sealing line, 9. Storage bin, 10. Injection channel, 11. Sealing block.

[0017] 12. Glue inlet sealing line, 13. Sealing groove,

[0018] 111 First sealing block, 112 Second sealing block, 113 Third sealing block, 114 Fourth sealing block,

[0019] 131 First sealing groove, 132 Second sealing groove, 133 Third sealing groove, 134 Fourth sealing groove. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] This utility model discloses a rubber sealing mold for a PEM electrolytic cell, such as Figure 1 As shown, the mold includes, from top to bottom, an upper mold plate 1, a first mold middle plate 2, a metal substrate 3, a second mold middle plate 4, and a lower mold plate 5. The metal substrate 3 is a titanium bipolar plate.

[0022] The lower end of the upper mold plate 1 and the upper end of the lower mold plate 5 are provided with bosses 6. The upper end of the first mold middle plate 2 and the lower end of the second mold middle plate 4 are provided with storage bins 9. The storage bins 9 are provided with injection channels 10. The bosses 6 and the storage bins 9 are positioned by the interlocking structure to prevent the rubber material from leaking.

[0023] like Figure 1 As shown, four bosses 6 are provided at the lower end of the upper mold plate 1 and the upper end of the lower mold plate 5, and four storage bins 9 are provided at the upper end of the first mold middle plate 2 and the lower end of the second mold middle plate 4. The bosses 6 and the storage bins 9 are L-shaped.

[0024] A sealing block 11 is provided at the lower end of the first mold plate 2 and the upper end of the second mold plate 4. A glue injection sealing line 12 is provided along the edge of the sealing block. A plurality of glue injection holes 7 are evenly distributed on the glue injection sealing line 12. The glue injection holes 7 are tapered holes. The inner diameter of the glue injection hole 7 at the end of the glue injection sealing line 12 is larger than the inner diameter at the end of the glue injection channel 10.

[0025] The metal substrate 3 has sealing grooves 13 at its upper and lower ends respectively. The sealing block 11 and the sealing groove 13 are positioned by the interlocking structure. A rubber sealing line 8 is provided along the edge of the sealing groove 13. The glue injection sealing line 12 cooperates with the rubber sealing line 8.

[0026] After the mold is closed, the portions of the upper and lower end faces of the metal substrate 3, excluding the rubber sealing line 8, are pressed together by the portions of the first mold plate 2 and the second mold plate 4, excluding the glue injection sealing line 12.

[0027] like Figure 2 As shown, the sealing block 11 includes a first sealing block 111, a second sealing block 112, a third sealing block 113, and a fourth sealing block 114. The first sealing block 111 and the third sealing block 113 are arranged diagonally, the second sealing block 112 and the fourth sealing block 114 are arranged diagonally, and the glue injection sealing line 12 surrounds the outer periphery of the first sealing block 111 and the third sealing block 113.

[0028] The sealing groove 13 includes a first sealing groove 131, a second sealing groove 132, a third sealing groove 133, and a fourth sealing groove 134. The first sealing groove 131, the second sealing groove 132, the third sealing groove 133, and the fourth sealing groove 134 are respectively positioned in conjunction with the first sealing block 111, the second sealing block 112, the third sealing block 113, and the fourth sealing block 114 through a concave-convex structure. The rubber sealing line 8 surrounds the outer periphery of the second sealing groove 132 and the fourth sealing groove 134.

[0029] like Figure 3 As shown, this embodiment includes the following steps when used:

[0030] Fix the mold on the heating table of the flat vulcanizing machine, set all parameters, and once the mold temperature reaches the set temperature and stabilizes, prepare for product processing;

[0031] The mold is set to the open state. The metal substrate 3 is placed on the middle plate 4 of the second mold according to the positioning. The middle plate 2 of the first mold and the middle plate 4 of the second mold are closed. Then, the pre-formed rubber material is placed into the storage bin of the middle plate 4 of the second mold and the boss 6 of the lower plate 5 of the mold respectively.

[0032] When the mold is set to the running state, the four-layer mold automatically closes. The sliding device of the vulcanizing machine pushes the mold to the heating and pressurizing table. The bosses 6 of the upper mold plate 1 and the lower mold plate 5 squeeze the rubber material and directly and precisely form it on the metal substrate 3 through the injection channel 10 and injection hole 7.

[0033] After the mold has been kept in heat and pressure for the set time, it will automatically push out and open the mold through the sliding device, take out the product, clean the overflow of glue in the upper and lower storage bins, and start the production of the next mold.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rubber seal mould for a PEM electrolyser, characterised in that, The mould comprises a mould upper plate (1), a first mould middle plate (2), a metal base plate (3), a second mould middle plate (4) and a mould lower plate (5) arranged in sequence from top to bottom, the lower end of the mould upper plate (1) and the upper end of the mould lower plate (5) are provided with bosses (6), the upper end of the first mould middle plate (2) and the lower end of the second mould middle plate (4) are provided with storage bins (9), the storage bins (9) are provided with glue injection runners (10), the bosses (6) and the storage bins (9) are positioned by concave-convex structure cooperation, the lower end of the first mould middle plate (2) and the upper end of the second mould middle plate (4) are provided with sealing blocks (11), glue injection sealing lines (12) are arranged along the edges of the sealing blocks, the glue injection sealing lines (12) are provided with a plurality of glue injection holes (7), the upper and lower ends of the metal base plate (3) are respectively provided with sealing grooves (13), the sealing blocks (11) and the sealing grooves (13) are positioned by concave-convex structure cooperation, rubber sealing lines (8) are arranged along the edges of the sealing grooves (13), and the glue injection sealing lines (12) cooperate with the rubber sealing lines (8).

2. The rubber seal mold for a PEM electrolyzer of claim 1, wherein, The glue injection holes (7) are tapered holes, and the inner diameter of the glue injection holes (7) at the end of the glue injection sealing line (12) is larger than the inner diameter of the glue injection holes (7) at the end of the glue injection runner (10).

3. The rubber seal mold for a PEM electrolyzer of claim 1, wherein, The lower end of the mould upper plate (1) and the upper end of the mould lower plate (5) are respectively provided with four bosses (6), the upper end of the first mould middle plate (2) and the lower end of the second mould middle plate (4) are respectively provided with four storage bins (9), and the bosses (6) and the storage bins (9) are L-shaped.

4. The rubber seal mold for a PEM electrolyzer of claim 1, wherein, The sealing blocks (11) comprise first sealing blocks (111), second sealing blocks (112), third sealing blocks (113) and fourth sealing blocks (114), the first sealing blocks (111) and the third sealing blocks (113) are arranged along diagonals, the second sealing blocks (112) and the fourth sealing blocks (114) are arranged along diagonals, and the glue injection sealing lines (12) surround the outer peripheries of the first sealing blocks (111) and the third sealing blocks (113).

5. The rubber seal mold for a PEM electrolyzer of claim 4, wherein, The sealing grooves (13) comprise first sealing grooves (131), second sealing grooves (132), third sealing grooves (133) and fourth sealing grooves (134), the first sealing grooves (131), the second sealing grooves (132), the third sealing grooves (133) and the fourth sealing grooves (134) are respectively positioned by concave-convex structure cooperation with the first sealing blocks (111), the second sealing blocks (112), the third sealing blocks (113) and the fourth sealing blocks (114), and the rubber sealing lines (8) surround the outer peripheries of the second sealing grooves (132) and the fourth sealing grooves (134).

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