A rubber washer mold

Abstract

The present invention provides a rubber washer mold, which includes an upper template, a middle template, a lower template, and a horizontal plug-in member. A plurality of mold cores are installed at the bottom of the upper template. The middle template is provided with a plurality of middle mold cavities penetrating the upper and lower surfaces, and a chute is formed at the bottom end of the middle template. The top end of the lower template is provided with a plurality of lower mold cavities. The horizontal plug-in member includes a sliding plate, which is installed on the lower template and can move along a predetermined direction. A plurality of locking blocks are arranged at intervals on the sliding plate. In the mold-closed state, a plurality of mold cores are respectively inserted into a plurality of middle mold cavities, and the plurality of middle mold cavities are respectively in one-to-one correspondence and communication with the plurality of lower mold cavities. The mold cores, the middle mold cavities, and the lower mold cavities cooperate to form a cavity, and the plurality of locking blocks are respectively arranged in the chute in a sliding fit manner. Before production and pressurization, the present invention locks the middle template and the lower template together by setting the horizontal plug-in member, reduces the mold-closed gap in advance, achieves a borderless effect, and eliminates the need for manual trimming after the product is demolded.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly to a rubber gasket mold. Background Art

[0002] The main functions of rubber gaskets are sealing and shock absorption, and they are widely used in the fields of automobiles and household appliances. Due to the small size of this product, wide application range, and large demand for the product. The existing rubber gasket mold structure includes three upper, middle, and lower templates. The product is formed by rubber molding, and flash will be generated at the parting surface, which is difficult to control. After the product is demolded, it needs to be manually trimmed to remove the waste edge, resulting in low work efficiency and a large amount of labor cost investment, and there is an urgent need for improvement. Summary of the Invention

[0003] Based on the technical problems existing in the background art, the present invention proposes a rubber gasket mold.

[0004] A rubber gasket mold proposed by the present invention includes an upper template, a middle template, a lower template, and a horizontal insert; wherein:

[0005] The upper template, the middle template, and the lower template are arranged in sequence from top to bottom. A plurality of mold cores are installed at the bottom of the upper template. The middle template is provided with a plurality of middle mold cavities penetrating the upper and lower surfaces, and a chute is opened at the bottom end of the middle template. The top end of the lower template is provided with a plurality of lower mold cavities;

[0006] The horizontal insert includes a sliding plate, which is installed on the lower template and can move along a predetermined direction. A plurality of locking blocks are arranged at intervals on the sliding plate;

[0007] In the closed mold state, a plurality of mold cores are respectively inserted into a plurality of middle mold cavities, and a plurality of middle mold cavities are respectively in one-to-one correspondence and communication with a plurality of lower mold cavities. The mold cores, the middle mold cavities, and the lower mold cavities cooperate to form a cavity, and a plurality of locking blocks are respectively slidably arranged in the chute.

[0008] Preferably, the locking block is of a T-shaped structure, the chute is a T-shaped groove adapted to the locking block, the bottom surface of the position of the locking block in the horizontal section of the chute is an inclined surface, and an inclined surface groove with a depth of 0.03 - 0.05 mm adapted to the inclined surface is processed at the bottom of the chute.

[0009] Preferably, the middle template is provided with an insertion opening communicating with the chute and for the locking block to enter and exit, and a plurality of through grooves adapted to the locking blocks are also opened at the bottom of the middle template. The plurality of through grooves are arranged at intervals and are all communicated with the through groove, and the plurality of through grooves are respectively arranged in one-to-one correspondence with the plurality of locking blocks.

[0010] Preferably, the horizontal insert is further provided with a horizontal insertion plate. A horizontal insertion slot is opened at the top end of the lower template. The horizontal insertion plate is slidably installed in the horizontal insertion slot. A horizontal insertion opening communicating with the horizontal insertion slot and for the horizontal insertion plate to enter and exit is provided on one side of the lower template close to the insertion opening, and the sliding plate is fixed on the horizontal insertion plate.

[0011] Preferably, the horizontal slot is an inverted T-shaped slot, the horizontal insertion plate is slidably arranged in the horizontal section of the horizontal slot, and the sliding plate is slidably arranged in the vertical section of the horizontal slot.

[0012] Preferably, there are two horizontal inserts, and a plurality of the lower die cavities are formed at the position between the two horizontal inserts at the top end of the lower template.

[0013] Preferably, it further includes a pulling plate, the pulling plate is slidably arranged between the lower template and the middle template and the pulling plate is connected to the horizontal insertion plates of the two horizontal inserts, and a handle located outside the lower template and the middle template is arranged on the pulling plate.

[0014] Preferably, a plurality of upper die cavities are formed at the bottom of the upper template, inserts are inlaid in the upper die cavities and the inserts are connected to the upper template through bolts, and the plurality of inserts are respectively connected to a plurality of die cores.

[0015] Preferably, pressure-bearing surfaces are arranged at the parting positions between the top end of the middle template and the bottom end of the upper template and between the top end of the lower template and the bottom end of the middle template.

[0016] Preferably, the middle die cavity is machined by a boring tool.

[0017] A rubber washer mold proposed by the present invention, by arranging horizontal inserts, before production pressurization, first slide the sliding plate to drive a plurality of locking blocks to insert into the sliding grooves, thereby locking the middle template and the lower template together, reducing the mold closing gap in advance, so as to control the thickness of the flash and promote the shedding of the flash when opening the mold, achieving a flashless effect. After the product is demolded, there is no need for manual trimming, reducing costs, improving the deburring efficiency, shortening the product delivery cycle, and greatly reducing the investment in labor costs;

[0018] In this embodiment, by arranging inserts on the upper template and machining the upper die cavity on the upper template, when assembling, the inserts and the upper template are hoisted by bolts. Since the upper die cavity is a revolving body, the upper die cavity is made in the form of an insert, and the insert can be completed by turning. While improving the machining accuracy of the mold, it well guarantees the consistency of the inserts and the roughness of the upper die cavity;

[0019] In this embodiment, the middle die cavity is machined by a boring tool instead of the previous milling machining method, which better guarantees the coaxiality and roughness of the middle die cavity, and shortens the mold machining time while improving the quality of rubber products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a rubber washer mold proposed by the present invention;

[0021] Figure 2 is a top view of a rubber washer mold proposed by the present invention;

[0022] Figure 3 is Figure 2Cross-sectional view in the direction of A-A;

[0023] Figure 4 is Figure 3 Enlarged view at position B;

[0024] Figure 5 is Figure 3 Enlarged view at position C;

[0025] Figure 6 is Figure 3 Enlarged view at position D;

[0026] Figure 7 Schematic structural diagram of the middle template of a rubber washer mold proposed by the present invention;

[0027] Figure 8 Assembly drawing of the lower template and the horizontal insert of a rubber washer mold proposed by the present invention;

[0028] Figure 9 Schematic structural diagram of the horizontal insert of a rubber washer mold proposed by the present invention. Detailed implementation method

[0029] Referring to Figures 1-9 , the present invention proposes a rubber washer mold, including an upper template 1, a middle template 2, a lower template 3, and a horizontal insert; wherein:

[0030] The upper template 1, the middle template 2, and the lower template 3 are arranged in sequence from top to bottom. A plurality of mold cores 4 are installed at the bottom of the upper template 1. The middle template 2 is provided with a plurality of middle mold cavities 5 penetrating the upper and lower surfaces, and a chute 7 is opened at the bottom end of the middle template 2. The top end of the lower template 3 is provided with a plurality of lower mold cavities 6;

[0031] The horizontal insert includes a sliding plate 8. The sliding plate 8 is installed on the lower template 3 and can move along a predetermined direction. A plurality of locking blocks 9 are arranged at intervals on the sliding plate 8;

[0032] In the closed mold state, a plurality of mold cores 4 are respectively inserted into a plurality of middle mold cavities 5, and a plurality of middle mold cavities 5 are respectively in one-to-one correspondence and communication with a plurality of lower mold cavities 6. The mold core 4, the middle mold cavity 5, and the lower mold cavity 6 cooperate to form a cavity, and a plurality of locking blocks 9 are all arranged in the chute 7 in a sliding fit manner.

[0033] In this embodiment, by setting the horizontal insert, before production pressurization, first slide the sliding plate 8 to drive a plurality of locking blocks 9 to insert into the chute 6, thereby locking the middle template 2 and the lower template 3 together, reducing the mold closing gap in advance, so as to control the thickness of the flash and promote the shedding of the flash when opening the mold, achieving a flashless effect. After the product is demolded, there is no need for manual trimming, which reduces costs, improves the deburring efficiency, shortens the product delivery cycle, and greatly reduces the investment in labor costs.

[0034] Referring toFigure 3 , Figure 6 , specifically, the locking block 9 is of a T-shaped structure, the sliding groove 7 is a T-shaped groove adapted to the locking block 9, the bottom surface of the position of the locking block 9 in the horizontal section of the sliding groove 7 is an inclined surface, and an inclined surface groove 10 with a depth of 0.03 - 0.05 mm adapted to the inclined surface is machined at the bottom of the sliding groove; the design of the inclined surface and the inclined surface groove 10 enables the locking block 9 to lock the middle template 2 and the lower template 3 more tightly.

[0035] Refer to Figure 1 , Figures 7-9 , in a preferred embodiment, an insertion port communicating with the sliding groove 7 and for the locking block 9 to enter and exit is provided on the middle template 2, and a plurality of through grooves 11 adapted to the locking block 9 are also opened at the bottom of the middle template 2. The plurality of through grooves 11 are arranged at intervals and all communicate with the through groove 11, and the plurality of through grooves 11 are respectively arranged in one-to-one correspondence with the plurality of locking blocks 9;

[0036] The horizontal plug-in member is also provided with a horizontal plug board 13. A horizontal plug slot 12 is opened at the top end of the lower template 3. The horizontal plug board 13 is slidably installed in the horizontal plug slot 12. A horizontal insertion port communicating with the horizontal plug slot 12 and for the horizontal plug board 13 to enter and exit is provided on one side of the lower template 3 close to the insertion port. The sliding plate 8 is fixed on the horizontal plug board 13. The horizontal plug slot 12 is an inverted T-shaped groove. The horizontal plug board 13 is slidably arranged in the horizontal section of the horizontal plug slot 12, and the sliding plate 8 is slidably arranged in the vertical section of the horizontal plug slot 12;

[0037] Through the above description, before mold closing, the horizontal plug board 13 is inserted into the horizontal plug slot 12 through the horizontal insertion port, and the locking blocks 9 are respectively arranged in one-to-one correspondence with the through grooves 11. During mold closing, the plurality of locking blocks 9 are respectively inserted into the plurality of through grooves 11; before production pressurization, by moving the horizontal plug board 13, the horizontal plug board 13 drives the sliding plate 8 to move, and the sliding plate 8 drives the plurality of locking blocks 9 to move, so that the locking blocks 9 enter the sliding groove 7 and lock the middle template 2 and the lower template 3 together.

[0038] Refer to Figure 1 , Figure 8 , in a preferred embodiment, to improve the locking effect, two horizontal plug-in members are provided. A plurality of the lower mold cavities 6 are opened at the top end of the lower template 3 at a position between the two horizontal plug-in members. It further includes a pull plate 14. The pull plate 14 is slidably arranged between the lower template 3 and the middle template 2 and the pull plate 14 is connected to the horizontal plug boards 13 of the two horizontal plug-in members, and a handle 15 located outside the lower template 3 and the middle template 2 is provided on the pull plate 14.

[0039] Refer to Figure 3, in a preferred embodiment, a plurality of upper die cavities are formed at the bottom of the upper template 1. Inserts 16 are fitted in the upper die cavities, and the inserts 16 are connected to the upper template 1 by bolts. The plurality of inserts 16 are respectively connected to the plurality of die cores 4. By providing the inserts 16, the insert upper die cavities are machined on the upper template 1. During assembly, the inserts 16 and the upper template 1 are hoisted by bolts. Since the upper die cavity is a rotating body and the upper die cavity is made in the form of an insert, the insert 16 can be completed by turning. While improving the machining accuracy of the mold, the consistency of the insert 16 and the roughness of the upper die cavity are well ensured.

[0040] Referring to Figures 3-5 , in a preferred embodiment, bearing surfaces 17 are provided at the parting surfaces between the top end of the middle template 2 and the bottom end of the upper template 1 and between the top end of the lower template 3 and the bottom end of the middle template 2, which better ensures the stress concentration at the parting surfaces.

[0041] In a preferred embodiment, the middle die cavity 5 is machined with a boring tool. When the middle die cavity 5 is relatively deep, since the middle die cavity 5 is too deep, it is easy to vibrate when the milling cutter is clamped too long from one side, and there will be joint marks when clamped on both sides. The previous milling machining method has a certain impact on the quality of the product; in this embodiment, the boring tool machining is used instead of the previous milling machining method, which better ensures the coaxiality and roughness of the middle die cavity 5, and shortens the mold machining time while improving the quality of the rubber product.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rubber washer mold, characterized in that, It includes an upper template (1), a middle template (2), a lower template (3), and a horizontal insert; where: The upper template (1), the middle template (2), and the lower template (3) are arranged in sequence from top to bottom. A plurality of mold cores (4) are installed at the bottom of the upper template (1). The middle template (2) is provided with a plurality of middle mold cavities (5) penetrating the upper and lower surfaces, and a chute (7) is opened at the bottom end of the middle template (2). The top end of the lower template (3) is provided with a plurality of lower mold cavities (6) and a plurality of lower mold cavities (6); The horizontal insert includes a sliding plate (8). The sliding plate (8) is installed on the lower template (3) and can move along a predetermined direction. A plurality of locking blocks (9) are arranged at intervals on the sliding plate (8); In the closed mold state, a plurality of mold cores (4) are respectively inserted into a plurality of middle mold cavities (5), and a plurality of middle mold cavities (5) are respectively in one-to-one correspondence and communication with a plurality of lower mold cavities (6). The mold core (4), the middle mold cavity (5), and the lower mold cavity (6) cooperate to form a cavity, and a plurality of locking blocks (9) are all slidably arranged in the chute (7); An insertion port communicating with the chute (7) and for the locking block (9) to enter and exit is arranged on the middle template (2). A plurality of through grooves (11) adapted to the locking blocks (9) are also opened at the bottom of the middle template (2). The plurality of through grooves (11) are arranged at intervals and are all communicated with the through groove (11). The plurality of through grooves (11) are respectively arranged in one-to-one correspondence with the plurality of locking blocks; The horizontal insert is also provided with a horizontal insertion plate (13). A horizontal insertion slot (12) is opened at the top end of the lower template (3). The horizontal insertion plate (13) is slidably installed in the horizontal insertion slot (12). A horizontal insertion port communicating with the horizontal insertion slot (12) and for the horizontal insertion plate (13) to enter and exit is arranged on the lower template (3) near the insertion port side. The sliding plate (8) is fixed on the horizontal insertion plate (13); The horizontal insertion slot (12) is an inverted T-shaped slot. The horizontal insertion plate (13) is slidably arranged in the horizontal section of the horizontal insertion slot (12), and the sliding plate (8) is slidably arranged in the vertical section of the horizontal insertion slot (12).

2. The rubber washer mold according to claim 1, characterized in that, The locking block (9) is a T-shaped structure. The chute (7) is a T-shaped slot adapted to the locking block (9). The bottom surface of the position of the locking block (9) located in the horizontal section of the chute (7) is an inclined surface, and an inclined surface groove (10) with a depth of 0.03 - 0.05 mm adapted to the inclined surface is processed at the bottom of the chute.

3. The rubber washer mold according to claim 1, wherein There are two horizontal inserts. A plurality of the lower mold cavities (6) are opened at the top end of the lower template (3) at the position between the two horizontal inserts.

4. The rubber washer mold according to claim 3, characterized in that, It further includes a pull plate (14). The pull plate (14) is slidably arranged between the lower template (3) and the middle template (2), and the pull plate (14) is connected to the horizontal insertion plates (13) of the two horizontal inserts. A handle (15) located outside the lower template (3) and the middle template (2) is arranged on the pull plate (14).

5. The rubber washer mold according to any one of claims 1-2, characterized in that, A plurality of upper mold cavities are opened at the bottom of the upper template (1). Inserts (16) are inlaid in the upper mold cavities, and the inserts (16) are connected to the upper template (1) by bolts. The plurality of inserts (16) are respectively connected to the plurality of mold cores (4).

6. The rubber washer mold according to any one of claims 1-2, characterized in that, Pressure-bearing surfaces (17) are arranged at the parting positions between the top end of the middle template (2) and the bottom end of the upper template (1) and between the top end of the lower template (3) and the bottom end of the middle template (2).

7. The rubber washer mold according to any one of claims 1-2, characterized in that, The middle mold cavity (5) is machined by a boring tool.

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