Rubber ring forming mold and forming method

Abstract

The invention relates to the field of molds, in particular to a rubber ring forming mold and method. A connecting rod is coaxially fixed to the center of the bottom of each sliding block, penetrates through the base and is in sliding connection with the base, a limiting block is coaxially fixed to the bottom end of each connecting rod, and each connecting rod is sleeved with a spring used for abutting against the corresponding sliding block; the male die is inserted into the mold hole and presses the sliding block downwards, and a gap for forming a rubber ring is formed between the male die and the mold hole; after the rubber ring is formed, the first mold base is separated from the second mold base, at the moment, under the elastic action of the springs, the multiple sliding blocks move upwards at the same time, the formed rubber ring is jacked upwards in the ascending process of the sliding blocks, the rubber ring can be separated from the mold hole, and therefore demolding of the rubber ring is achieved. According to the design, operation of workers is not needed during demolding, the mold has the advantages of being convenient to demold and good in demolding effect, and the machining efficiency of the mold is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of moulds, in particular to a rubber ring forming mould and a forming method. Background Art

[0002] Rubber ring is a widely used seal. It is composed of a circular rubber seal and is sealed by the surface connection of the ring. It has the function of sealing the medium under a certain pressure and keeping the medium from leaking. It is widely used in machinery, automobile, electrical, electronic, instrumentation, chemical, aerospace and other fields. At present, there are many ways to produce rubber rings, such as injection molding through injection molds.

[0003] The utility model patent with authorization announcement number CN217621660U discloses a rubber mold, which includes a first template and a second template; the first template is provided with a protrusion; the protrusion is provided with a first half cavity; the outer diameter of the protrusion is larger than the outer diameter of the first half cavity; the second template is provided with a recessed portion; the recessed portion is provided with a second half cavity; the outer diameter of the recessed portion is larger than the outer diameter of the second half cavity; when the first template and the second template are pressed tightly, the protrusion cooperates with the recessed portion so that the first half cavity and the second half cavity form a complete cavity for accommodating rubber. By setting the first template and the second template; the first template is provided with a raised portion; the raised portion is provided with a first half cavity; the outer diameter of the raised portion is greater than the outer diameter of the first half cavity; the second template is provided with a recessed portion; the recessed portion is provided with a second half cavity; the outer diameter of the recessed portion is greater than the outer diameter of the second half cavity; when the first template and the second template are pressed tightly, the raised portion cooperates with the recessed portion so that the first half cavity and the second half cavity form a complete cavity for accommodating the rubber material. The rubber material is always kept in the recessed portion, and the rubber material cannot turn out by its own elasticity or thermal expansion. During vulcanization molding, when the rubber material is pressed to flow outward, it will be blocked by the inner wall of the recessed portion. After the rubber material is blocked from flowing outward, it will automatically flow back into the cavity, thereby eliminating material shortage defects.

[0004] Although the rubber mold can eliminate the problem of material shortage, the device still has the following problems in actual use: after the product is formed in the cavity, it needs to be manually taken out by the staff, and due to the close fit between the product and the cavity, it is inconvenient to take out the product, which increases the difficulty of operation and affects the processing efficiency of the mold. In view of this, we propose a rubber ring molding mold and molding method. Summary of the invention

[0005] The object of the present invention is to provide a rubber ring forming mold and a forming method to solve the problems raised in the above background technology.

[0006] To achieve the above object, on the one hand, the present invention provides a rubber ring forming mold, comprising two symmetrical brackets, each of which has an air hole on its outer wall, and each of which has a heat dissipation fan installed at the air hole;

[0007] A detachable base is installed between the two brackets, a first die base is fixed on the top of the base, a plurality of holes are opened on the top of the first die base, sliders are slidably installed in the holes, a connecting rod is coaxially fixed at the bottom center of the slider, the connecting rod passes through the base and is slidably connected to the base, a limited block is coaxially fixed at the bottom end of the connecting rod, and a spring for pressing the slider is sleeved on the outside of the connecting rod; guide rods are fixed at the four corners of the top of the base, a top plate is fixed between the top ends of two adjacent guide rods, and two electric cylinders are installed on the top of the top plate;

[0008] A top seat is provided above the first die seat, the end of the piston rod of the electric cylinder is fixedly connected to the top seat, sliding holes slidably connected to the guide rods are opened at the four corners of the top of the top seat, a second die seat is fixed at the bottom of the top seat, a plurality of punches are fixed at the bottom of the second die seat, the punches are inserted into the mold holes and pressed against the top of the slider; a feed pipe is fixed on one side of the punch of the second die seat, the upper and lower ends of the feed pipe pass through the top seat and the second die seat respectively, and a feed hopper is installed at the top of the feed pipe.

[0009] Preferably, two opposite end faces of the two brackets are fixed with fixing seats, the outer walls of the fixing seats are provided with clamping grooves, and two fixing bolts are threadedly connected to the fixing seats; the two ends of the base are inserted into the clamping grooves, and two connecting holes are provided at both ends of the base, and the fixing bolts pass through the connecting holes.

[0010] Preferably, the cross-sectional shape of the feed hopper is funnel-shaped, and the feed hopper and the feed pipe are an integrally formed structure.

[0011] Preferably, the center of the punch and the center of the die hole are located on the same vertical axis, and the diameter of the punch is smaller than the diameter of the die hole.

[0012] Preferably, a positioning column is coaxially fixed to the bottom of the male mold, a positioning hole is provided on the top of the sliding block, and the positioning column is plug-fitted with the corresponding positioning hole.

[0013] Preferably, the inner bottom of the bracket is provided with two mounting grooves, and the two mounting grooves are symmetrically arranged.

[0014] Preferably, the cross-section of the fixing seat is U-shaped, and the fixing seat is fixedly connected to the bracket by bolts.

[0015] Preferably, the connecting rod is fixedly connected to the limit block by bolts, and the diameter of the connecting rod is smaller than the diameter of the limit block.

[0016] Preferably, the base is fixedly connected to the first mold base by bolts, and the top base is fixedly connected to the second mold base by bolts.

[0017] On the other hand, the present invention also provides a rubber ring molding method, using the above-mentioned rubber ring molding mold, comprising the following steps:

[0018] S1: Turn on the power of the electric cylinder, the piston rod of the electric cylinder drives the top seat to move downward, the top seat drives the second die seat to move downward, the top seat drives multiple punches to be inserted into the die hole, and the positioning column is inserted into the positioning hole;

[0019] S2: The punch pushes the slider downward synchronously, and the spring is compressed by the slider; when the second die base is pressed against the first die base, the user stops the power supply of the electric cylinder;

[0020] S3: The high-temperature material is fed into the feed hopper, and the high-temperature material enters the mold hole through the feed pipe, and the high-temperature material fills the gap between the punch and the mold hole at the same time;

[0021] S4: Turn on the power of the cooling fan, and the cooling fan blows wind from both sides to the middle, and the wind blows toward the first mold base and the second mold base. The airflow takes away the heat outside the first mold base and the second mold base, and the first mold base and the second mold base are gradually cooled, and the material in the mold hole is gradually cooled and formed.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By setting the first die base and the second die base: when the first die base and the second die base are closed, the punch is inserted into the die hole and presses down the slider, and a gap for the rubber ring to be formed is formed between the punch and the die hole; after the rubber ring is formed, the first die base is separated from the second die base, and at this time, under the elastic action of the spring, multiple sliders move upward at the same time, and the sliders push up the formed rubber ring during the rising process, and the rubber ring can be separated from the die hole, thereby realizing the demoulding of the rubber ring; this design does not require staff operation during demoulding, has the advantages of convenient demoulding and good demoulding effect, and ensures the processing efficiency of the mold;

[0024] 2. By setting up multiple cooling fans on both sides, a counter-blowing effect can be formed on the mold. Under the action of the counter-blowing airflow, the mold can be quickly cooled, which is conducive to the rapid cooling and shaping of the rubber ring in the mold hole, thereby ensuring the processing efficiency of the rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the bracket in the present invention;

[0027] Figure 3 It is a partial structural cross-sectional view of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the first mold base in the present invention;

[0029] Figure 5 It is a partial structural schematic diagram of the first mold base in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the second mold base in the present invention;

[0031] Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0032] In the figure:

[0033] 1. Bracket; 10. Air hole; 11. Cooling fan; 12. Mounting slot; 13. Fixing seat; 130. Clamping slot; 14. Fixing bolt;

[0034] 2. Base; 20. Connecting hole; 21. First die base; 210. Profile hole; 22. Slider; 220. Positioning hole; 23. Spring; 24. Connecting rod; 25. Limit block; 26. Guide rod; 27. Top plate; 28. Electric cylinder;

[0035] 3. Top seat; 30. Sliding hole; 31. Second die seat; 32. Punch; 320. Positioning column; 33. Feed pipe; 330. Feed hopper. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, 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" 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.

[0038] In one aspect, the present invention provides a rubber ring forming mold:

[0039] A rubber ring forming mold, such as Figure 1-7As shown, it includes two symmetrical brackets 1, each of which has an air hole 10 on its outer wall, and a cooling fan 11 is installed at each of the air holes 10; a detachable base 2 is installed between the two brackets 1, a first mold base 21 is fixed on the top of the base 2, a plurality of holes 210 are opened on the top of the first mold base 21, and sliders 22 are slidably installed in the holes 210, a connecting rod 24 is coaxially fixed at the bottom center of the slider 22, the connecting rod 24 passes through the base 2 and is slidably connected to the base 2, a limited block 25 is coaxially fixed at the bottom end of the connecting rod 24, and a spring 23 for pressing the slider 22 is provided on the outside of the connecting rod 24; guide rods 26 are fixed at the four corners of the top of the base 2, and two adjacent guide rods A top plate 27 is fixed between the top ends of the first die base 21 and the second die base 26, and two electric cylinders 28 are installed on the top of the top plate 27; a top seat 3 is provided above the first die base 21, and the piston rod end of the electric cylinder 28 is fixedly connected to the top seat 3, and sliding holes 30 slidably connected to the guide rod 26 are provided at the four corners of the top of the top seat 3, and a second die base 31 is fixed to the bottom of the top seat 3, and a plurality of punches 32 are fixed to the bottom of the second die base 31, and the punches 32 penetrate into the mold hole 210 and press against the top of the slider 22; a feed pipe 33 is fixed to the second die base 31 on one side of the punch 32, and the upper and lower ends of the feed pipe 33 pass through the top seat 3 and the second die base 31 respectively, and a feed hopper 330 is installed on the top of the feed pipe 33.

[0040] Furthermore, two opposite end faces of the two brackets 1 are fixed with fixing seats 13, the outer walls of the fixing seats 13 are provided with clamping grooves 130, and two fixing bolts 14 are threadedly connected to the fixing seats 13; both ends of the base 2 are inserted into the clamping grooves 130, and two connecting holes 20 are provided at both ends of the base 2, and the fixing bolts 14 pass through the connecting holes 20. This design facilitates the disassembly and assembly between the bracket 1 and the base 2, thereby facilitating the later inspection and maintenance of the mold.

[0041] In this embodiment, the cross-sectional shape of the feed hopper 330 is funnel-shaped, and the feed hopper 330 and the feed pipe 33 are an integrally formed structure. The integrally formed feed hopper 330 and the feed pipe 33 have better connection strength, ensuring the service life of the feed hopper 330 and the feed pipe 33, and the funnel-shaped design can avoid leakage during feeding.

[0042] In this embodiment, the center of the punch 32 and the center of the mold hole 210 are located on the same vertical axis, and the diameter of the punch 32 is smaller than the diameter of the mold hole 210. This design facilitates the close fit between the punch 32 and the mold hole 210, thereby facilitating the molding of the rubber ring in the gap between the punch 32 and the mold hole 210.

[0043] In this embodiment, a positioning column 320 is coaxially fixed to the bottom of the male mold 32, and a positioning hole 220 is provided on the top of the slider 22. The positioning column 320 is plugged into and matched with the corresponding positioning hole 220. The arrangement of the positioning column 320 and the positioning hole 220 increases the tightness of the connection between the male mold 32 and the slider 22.

[0044] In this embodiment, two mounting grooves 12 are provided at the inner bottom of the bracket 1, and the two mounting grooves 12 are symmetrically arranged. The arrangement of the mounting grooves 12 facilitates the insertion of bolts, and further facilitates the mounting and fixing of the bracket 1 to the fixing platform by bolts.

[0045] In this embodiment, the cross-section of the fixing seat 13 is U-shaped, and the fixing seat 13 is fixedly connected to the bracket 1 by bolts. The bolt fixing method ensures the installation reliability of the fixing seat 13, and the U-shaped design is conducive to matching with the base 2.

[0046] In this embodiment, the connecting rod 24 is fixedly connected to the limit block 25 by bolts, and the diameter of the connecting rod 24 is smaller than the diameter of the limit block 25. The bolt fixing method ensures the reliability of the connection between the connecting rod 24 and the limit block 25, and the setting of the limit block 25 can prevent the connecting rod 24 from being separated from the base 2, thereby ensuring the stable use of the slider 22.

[0047] In this embodiment, the base 2 is fixedly connected to the first mold base 21 by bolts, and the top base 3 is fixedly connected to the second mold base 31 by bolts. The bolt fixing method has the advantages of reliable connection and easy disassembly and assembly, which meets the requirements of mold use.

[0048] It can be understood that the multiple mold holes 210 in this embodiment are distributed in a matrix shape. This design is conducive to molding multiple rubber rings at the same time, improves the processing efficiency of the rubber rings, and meets the processing requirements of the rubber rings.

[0049] On the other hand, the present invention also provides a rubber ring molding method, using the above-mentioned rubber ring molding mold, comprising the following steps:

[0050] S1: Turn on the power of the electric cylinder 28, the piston rod of the electric cylinder 28 drives the top seat 3 to move downward, the top seat 3 drives the second die seat 31 to move downward, the top seat 3 drives the plurality of punches 32 to be inserted into the die hole 210, and the positioning column 320 is inserted into the positioning hole 220;

[0051] S2: The punch 32 pushes the slider 22 downward synchronously, and the spring 23 is compressed by the slider 22; when the second die base 31 is pressed against the first die base 21, the user stops the power supply of the electric cylinder 28;

[0052] S3: The high-temperature material is fed into the feed hopper 330 , and the high-temperature material enters the mold hole 210 through the feed pipe 33 , and the high-temperature material simultaneously fills the gap between the punch 32 and the mold hole 210 ;

[0053] S4: Turn on the power of the cooling fan 11, and the cooling fan 11 blows wind from both sides to the middle, and the wind blows toward the first mold base 21 and the second mold base 31. The airflow takes away the heat outside the first mold base 21 and the second mold base 31, and the first mold base 21 and the second mold base 31 are gradually cooled, and the material in the mold hole 210 is gradually cooled and formed.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rubber ring forming mold, characterized in that: It comprises two symmetrical brackets (1), each bracket (1) has an air hole (10) formed on its outer wall, and each air hole (10) is provided with a heat dissipation fan (11); A detachable base (2) is installed between the two brackets (1), a first die base (21) is fixed on the top of the base (2), a plurality of holes (210) are provided on the top of the first die base (21), a slider (22) is slidably installed in each of the holes (210), a connecting rod (24) is coaxially fixed at the bottom center of the slider (22), the connecting rod (24) passes through the base (2) and is slidably connected to the base (2), a limiting block (25) is coaxially fixed at the bottom end of the connecting rod (24), and a spring (23) for pressing against the slider (22) is sleeved on the outside of the connecting rod (24); guide rods (26) are fixed at the four corners of the top of the base (2), a top plate (27) is fixed between the top ends of two adjacent guide rods (26), and two electric cylinders (28) are installed on the top of the top plate (27); A top seat (3) is provided above the first die seat (21), the piston rod end of the electric cylinder (28) is fixedly connected to the top seat (3), sliding holes (30) slidably connected to the guide rod (26) are provided at the four corners of the top of the top seat (3), a second die seat (31) is fixed at the bottom of the top seat (3), a plurality of punches (32) are fixed at the bottom of the second die seat (31), the punches (32) penetrate into the mold hole (210) and press against the top of the slide block (22); a feed pipe (33) is fixed on one side of the punch (32) at the second die seat (31), the upper and lower ends of the feed pipe (33) respectively pass through the top seat (3) and the second die seat (31), and a feed hopper (330) is installed at the top of the feed pipe (33).

2. The rubber ring forming mold according to claim 1, characterized in that: Two opposite end surfaces of the two brackets (1) are fixed with a fixing seat (13), the outer wall of the fixing seat (13) is provided with a clamping groove (130), and two fixing bolts (14) are threadedly connected to the fixing seat (13); the two ends of the base (2) are inserted into the clamping groove (130), and two connection holes (20) are provided at the two ends of the base (2), and the fixing bolts (14) pass through the connection holes (20).

3. The rubber ring forming mold according to claim 1, characterized in that: The cross-sectional shape of the feed hopper (330) is funnel-shaped, and the feed hopper (330) and the feed pipe (33) are an integrally formed structure.

4. The rubber ring forming mold according to claim 1, characterized in that: The center of the punch (32) and the center of the mold hole (210) are located on the same vertical axis, and the diameter of the punch (32) is smaller than the diameter of the mold hole (210).

5. The rubber ring forming mold according to claim 1, characterized in that: A positioning column (320) is coaxially fixed to the bottom of the male mold (32), a positioning hole (220) is provided on the top of the slider (22), and the positioning column (320) is plugged into and matched with the corresponding positioning hole (220).

6. The rubber ring forming mold according to claim 1, characterized in that: The inner bottom of the bracket (1) is provided with two mounting grooves (12), and the two mounting grooves (12) are symmetrically arranged.

7. The rubber ring forming mold according to claim 2, characterized in that: The cross-sectional shape of the fixing seat (13) is U-shaped, and the fixing seat (13) is fixedly connected to the bracket (1) via bolts.

8. The rubber ring forming mold according to claim 1, characterized in that: The connecting rod (24) is fixedly connected to the limiting block (25) via bolts, and the diameter of the connecting rod (24) is smaller than the diameter of the limiting block (25).

9. The rubber ring forming mold according to claim 1, characterized in that: The base (2) is fixedly connected to the first mold base (21) via bolts, and the top base (3) is fixedly connected to the second mold base (31) via bolts.

10. A rubber ring molding method, using the rubber ring molding mold according to any one of claims 1 to 9, characterized in that: The steps include: S1: Turning on the power supply of the electric cylinder (28), the piston rod of the electric cylinder (28) drives the top seat (3) to move downward, the top seat (3) drives the second die seat (31) to move downward, the top seat (3) drives the plurality of punches (32) to be inserted into the die hole (210), and the positioning column (320) is inserted into the positioning hole (220); S2: The punch (32) pushes the slider (22) downward synchronously, and the spring (23) is compressed by the slider (22); when the second die base (31) is pressed against the first die base (21), the user stops the power supply of the electric cylinder (28); S3: High-temperature material is fed into the feed hopper (330), and the high-temperature material enters the mold hole (210) through the feed pipe (33), and the high-temperature material simultaneously fills the gap between the punch (32) and the mold hole (210); S4: The power supply of the heat dissipation fan (11) is turned on, and the heat dissipation fan (11) blows wind from both sides toward the middle, and the wind blows toward the first mold base (21) and the second mold base (31), and the airflow takes away the heat outside the first mold base (21) and the second mold base (31), and the first mold base (21) and the second mold base (31) are gradually cooled, and the material in the mold hole (210) is gradually cooled and formed.

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