Liquid silica gel watchband forming injection mold

Abstract

The utility model discloses a liquid silica gel watchband forming injection mold which comprises an L-shaped base, a base is installed on the upper end face of the L-shaped base, a lower mold is arranged on the upper end face of the base through a square groove A, inserting holes are formed in the four end corners of the upper end face of the lower mold, and a plurality of lower mold grooves are evenly formed in the upper end face of the lower mold. The outer sides of the lower die grooves are both provided with limiting grooves, rotating shafts are fixedly installed on the front end face and the rear end face of the lower die, a heat dissipation mechanism is arranged below the lower die, a top plate is installed above the L-shaped base, the lower portion of the top plate is movably connected with a lifting plate through a hydraulic rod, and a shell is installed on the upper end face of the lifting plate. The upper mold and the lower mold can swing back and forth in a small range, the injection molding process is more uniform, the forming speed is increased, the dispersing effect is good, the watchband cooling time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid silicone strap production, in particular to an injection mold for forming liquid silicone straps. Background Technique

[0002] Liquid silicone straps are available on major brand watches nowadays because they are soft and comfortable, easy to clean, not easily scratched, non-toxic and odorless, resistant to tearing and oxidation, have strong waterproof and corrosion resistance, and a long service life. Injection molds are required in the process of forming liquid silicone straps.

[0003] However, in the existing injection molding of liquid silicone, the molding speed is slow, the working efficiency is not high, problems such as glue overflow are likely to occur, and when the liquid silicone injection mold is in use, the mold itself has no heat dissipation structure, and the heat dissipation effect is poor, resulting in a longer cooling time for the strap, which will affect the production efficiency; Therefore, it does not meet the existing requirements, and for this reason, we propose an injection mold for forming liquid silicone straps. Content of the Utility Model

[0004] The purpose of the utility model is to provide an injection mold for forming liquid silicone straps, so as to solve the problems in the above-mentioned background technique that the molding speed is slow, the working efficiency is not high, and problems such as glue overflow are likely to occur in the existing liquid silicone injection molding process, and when the liquid silicone injection mold is in use, the mold itself has no heat dissipation structure, the heat dissipation effect is poor, resulting in a longer cooling time for the strap, which will affect the production efficiency, etc.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An injection mold for forming liquid silicone straps, including an L-shaped base and a motor. The upper end surface of the L-shaped base is provided with a base. The upper end surface of the base is provided with a lower mold through a square groove A. Jacks are arranged at the four end corners of the upper end surface of the lower mold. A plurality of lower mold grooves are evenly arranged on the upper end surface of the lower mold. Limiting grooves are arranged on the outer sides of the lower mold grooves. Rotating shafts are fixedly installed on the front and rear end surfaces of the lower mold. A heat dissipation mechanism is arranged below the lower mold. A top plate is installed above the L-shaped base. A lifting plate is movably connected below the top plate through a hydraulic rod. A shell is installed on the upper end surface of the lifting plate. A square groove B is arranged on the lower end surface of the lifting plate. An upper mold is movably connected inside the square groove B through a limiting mechanism. A plurality of upper mold grooves are evenly arranged on the lower end surface of the upper mold. Partition plates are installed on the outer sides of the upper mold grooves. Plug rods are installed at the four end corners of the lower end surface of the upper mold. Injection holes are arranged above the upper mold grooves. A plurality of blanking mechanisms are evenly arranged above the interior of the lifting plate.

[0006] Preferably, a liquid silicone rubber box is installed in the middle of the upper end face of the top plate, a hydraulic pump is installed in the middle of the lower end face of the top plate, the hydraulic pump is connected to the liquid silicone rubber box through connecting pipe A, the hydraulic pump is connected to the inside of the housing through connecting pipe B, a solenoid valve is installed inside the injection hole, support plates are installed on both sides of the outer surface of the lifting plate, sliding rods are installed at the four end corners of the lower end face of the top plate, and the support plates penetrate through the sliding rods.

[0007] Preferably, the output end of the motor is fixedly connected to the front end face of one of the rotating shafts through a coupling, the rear end face of the other rotating shaft is rotatably connected to the inner wall of the square groove A through a bearing, the jack is adapted to the inserting rod, an electromagnet A is installed on the upper end face of the jack, an electromagnet B is installed on the lower end face of the inserting rod, the electromagnet A and the electromagnet B have opposite magnetic poles, and the limiting groove is adapted to the partition plate.

[0008] Preferably, the limiting mechanism includes a threaded rod, the threaded rod is arranged on the front end face and the rear end face of the lifting plate through a threaded hole, the threaded rod is screwed with the threaded hole, the threaded hole is connected to the square groove B through a receiving groove, a clamping block is rotatably connected to the opposite sides of the outer surfaces of the two threaded rods through a bearing, clamping grooves are arranged on the front end face and the rear end face of the upper mold, the clamping grooves are adapted to the clamping blocks, and the size of the clamping blocks is smaller than the size of the receiving groove.

[0009] Preferably, the heat dissipation mechanism includes a U-shaped plate, the U-shaped plate is arranged below the lower mold through a groove, the U-shaped plate is movably connected to the groove through an electric push rod A, a cooling layer is arranged inside the U-shaped plate, and a plurality of heat dissipation fins are uniformly installed on the upper end face of the U-shaped plate.

[0010] Preferably, through grooves are arranged at the front and rear of the upper end face of the U-shaped plate, a water tank is installed on the rear end face of the base, a water pump is installed on the upper end face of the water tank, the water tank is connected to the water pump through a water pipe A, and the water pump is connected to the cooling layer through a water pipe B.

[0011] Preferably, the blanking mechanism includes a blanking pipe, the upper end face of the blanking pipe extends into the housing, a middle lower section of the blanking pipe is arranged as a telescopic hose, a sleeve plate is sleeved on the lower part of the outer surface of the blanking pipe, the blanking pipe is arranged above the square groove B through a through hole, a square groove is arranged below the through hole, the sleeve plate is movably connected to the top surface of the inner wall of the square groove through an electric push rod B, and the lower end face of the blanking pipe is fixedly connected to a discharge head.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. The utility model is provided with a limiting mechanism, a motor, a rotating shaft, a jack and a plug rod. The hydraulic rod drives the lifting plate to move downward. When the upper die contacts the lower die, the plug rod is inserted into the inner side of the jack, and the switches of electromagnet A and electromagnet B are turned on. At this time, the upper die and the lower die are closed and tightly connected. By providing a partition plate and a limiting groove, the partition plate is clamped into the inner side of the limiting groove, which can prevent glue overflow. By providing a blanking mechanism, the switches of the electric push rod B and the solenoid valve can be turned on. The electric push rod B works to drive the sleeve plate to move downward, the telescopic hose is stretched, and the discharge head moves downward and enters the inner side of the injection hole. The liquid silicone is squeezed into the inner sides of the upper die cavity and the lower die cavity through the injection hole. Then, by controlling the electric push rod B, the discharge head is moved upward to leave the inner side of the injection hole. At this time, the threaded rod can be rotated, so that the threaded rod moves outward in the threaded hole, driving the clamping block to move, and the clamping block leaves the inner side of the clamping groove, releasing the limit on the upper die. Then, the switch of the motor is turned on, and the motor is controlled to rotate forward and backward to drive the rotating shaft to rotate back and forth, thereby driving the upper die and the lower die to rotate back and forth by a certain angle, so that the liquid silicone shakes in the inner sides of the lower die cavity and the upper die cavity, accelerating its molding speed, and making the injection process of the liquid silicone more uniform, improving work efficiency;

[0014] 2. The utility model is provided with a heat dissipation mechanism. When the water pump works, the water in the water tank can be transported to the cooling layer through the water pipe A and the water pipe B. Then, by controlling the electric push rod A, the U-shaped plate is driven to move upward, so that the upper end surface of the heat dissipation fin contacts the lower end surface of the lower die, thereby expanding the heat dissipation area of the lower die. And the heat dissipation fin can transfer the low temperature of the cooling layer to the lower die, accelerating the heat dissipation speed of the lower die. The utility model has good heat dissipation effect, reduces the cooling time of the watch band, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the whole utility model;

[0016] Figure 2 is a side sectional view of the whole utility model;

[0017] Figure 3 is a schematic structural diagram of the lifting plate of the utility model;

[0018] Figure 4 is a partial structural diagram of the blanking mechanism of the utility model;

[0019] Figure 5 is a side sectional view of the base of the utility model.

[0020] In the figure: 1. L-shaped base; 2. top plate; 3. hydraulic rod; 4. liquid silicone rubber tank; 5. housing; 6. lifting plate; 7. base; 8. lower mold; 9. motor; 10. heat dissipation mechanism; 1001. groove; 1002. electric push rod A; 1003. water tank; 1004. water pump; 1005. U-shaped plate; 1006. cooling layer; 1007. heat dissipation fins; 11. limiting mechanism; 1101. threaded rod; 1102. storage groove; 1103. clamping block; 1104. clamping groove; 1105. threaded hole; 12. upper mold; 13. blanking mechanism; 1301. blanking pipe; 1302. through hole; 1303. telescopic hose; 1304. square groove; 1305. sleeve plate; 1306. discharge head; 1307. electric push rod B; 14. hydraulic pump; 15. upper mold cavity; 16. injection hole; 17. rotating shaft; 18. jack; 19. lower mold cavity; 20. limiting groove; 21. inserting rod; 22. partition board. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] The hydraulic rod 3 (model number HOB80X250-100), motor 9 (model number YEJ3-112M-4), electric push rod A 1002 (model number LBP40), water pump 14 (model number IS200-150-400), electric push rod B 1307 (model number ANT-35) and hydraulic pump 14 (model number YB1-10 / 6) mentioned in the present invention can all be obtained by purchasing from the market or customizing privately.

[0023] Please refer to Figures 1 to 5, an embodiment provided by the present utility model: a liquid silicone strap forming injection mold, including an L-shaped base 1, a base 7 is installed on the upper end surface of the L-shaped base 1, a lower mold 8 is arranged on the upper end surface of the base 7 through a square groove A, jacks 18 are arranged at the four end corners of the upper end surface of the lower mold 8, a plurality of lower mold cavities 19 are evenly arranged on the upper end surface of the lower mold 8, limiting grooves 20 are arranged on the outer sides of the lower mold cavities 19, rotating shafts 17 are fixedly installed on the front and rear end surfaces of the lower mold 8, a heat dissipation mechanism 10 is arranged below the lower mold 8, a top plate 2 is installed above the L-shaped base 1, a lifting plate 6 is movably connected to the lower end of the top plate 2 through a hydraulic rod 3, a housing 5 is installed on the upper end surface of the lifting plate 6, a square groove B is arranged on the lower end surface of the lifting plate 6, an upper mold 12 is movably connected to the inner side of the square groove B through a limiting mechanism 11, a plurality of upper mold cavities 15 are evenly arranged on the lower end surface of the upper mold 12, partition plates 22 are installed on the outer sides of the upper mold cavities 15, inserting rods 21 are installed at the four end corners of the lower end surface of the upper mold 12, injection holes 16 are arranged above the upper mold cavities 15, and a plurality of blanking mechanisms 13 are evenly arranged above the interior of the lifting plate 6.

[0024] A liquid silicone box 4 is installed in the middle of the upper end surface of the top plate 2, a hydraulic pump 14 is installed in the middle of the lower end surface of the top plate 2, the hydraulic pump 14 is connected to the liquid silicone box 4 through a connecting pipe A, the hydraulic pump 14 is connected to the interior of the housing 5 through a connecting pipe B, a solenoid valve is installed inside the injection hole 16, support plates are installed on both sides of the outer surface of the lifting plate 6, sliding rods are installed at the four end corners of the lower end surface of the top plate 2, the support plates penetrate through the sliding rods, when the hydraulic pump 14 works, the liquid silicone can enter the housing 5 through the connecting pipe A and the connecting pipe B, improving the stability of the up and down movement of the lifting plate 6.

[0025] The output end of the motor 9 is fixedly connected to the front end surface of one of the rotating shafts 17 through a coupling, the rear end surface of the other rotating shaft 17 is rotatably connected to the inner wall of the square groove A through a bearing, the jack 18 is adapted to the inserting rod 21, an electromagnet A is installed on the upper end surface of the jack 18, an electromagnet B is installed on the lower end surface of the inserting rod 21, the poles of the electromagnet A and the electromagnet B are opposite, the limiting groove 20 is adapted to the partition plate 22, the inserting rod 21 can be inserted into the inner side of the jack 18, and by arranging the electromagnet A and the electromagnet B, the stability of the inserting rod 21 inserted into the inner side of the jack 18 is improved, and the partition plate 22 can be inserted into the inner side of the limiting groove.

[0026] The limiting mechanism 11 includes a threaded rod 1101. The threaded rod 1101 is arranged on the front and rear end faces of the lifting plate 6 through threaded holes 1105. The threaded rod 1101 is screwed with the threaded holes 1105. The threaded holes 1105 are connected to the square groove B through the storage groove 1102. On the opposite sides of the outer surfaces of the two threaded rods 1101, a clamping block 1103 is rotatably connected through a bearing. On the front and rear end faces of the upper die 12, clamping grooves 1104 are provided. The clamping grooves 1104 are adapted to the clamping blocks 1103. The size of the clamping block 1103 is smaller than the size of the storage groove 1102. By rotating the threaded rod 1101, the threaded rod 1101 can move inside the threaded hole 1105, driving the clamping block 1103 to move. The clamping block 1103 can be inserted into the inside of the clamping groove 1104, and the clamping block 1103 can be retracted into the inside of the storage groove 1102 to release the limit on the upper die 12.

[0027] The heat dissipation mechanism 10 includes a U-shaped plate 1005. The U-shaped plate 1005 is arranged below the lower die 8 through a groove 1001. The U-shaped plate 1005 is movably connected to the groove 1001 through an electric push rod A1002. A cooling layer 1006 is arranged inside the U-shaped plate 1005. A number of heat dissipation fins 1007 are evenly installed on the upper end face of the U-shaped plate 1005. By controlling the electric push rod A1002, the U-shaped plate 1005 can be driven to move upward, so that the upper end face of the heat dissipation fins 1007 contacts the lower end face of the lower die 8, thereby expanding the heat dissipation area of the lower die 8. Moreover, the heat dissipation fins 1007 can transfer the low temperature of the cooling layer 1006 to the lower die 8, accelerating the heat dissipation speed of the lower die 8.

[0028] Through grooves are provided at the front and rear of the upper end face of the U-shaped plate 1005. A water tank 1003 is installed on the rear end face of the base 7. A water pump 1004 is installed on the upper end face of the water tank 1003. The water tank 1003 is connected to the water pump 1004 through a water pipe A. The water pump 1004 is connected to the cooling layer 1006 through a water pipe B. When the water pump 1004 works, the water in the water tank 1003 can be transported to the inside of the cooling layer 1006 through the water pipe A and the water pipe B.

[0029] The blanking mechanism 13 includes a blanking pipe 1301. The upper end surface of the blanking pipe 1301 extends into the interior of the housing 5. A section of the blanking pipe 1301 that is slightly below the middle is provided as a telescopic hose 1303. A sleeve plate 1305 is sleeved on the lower part of the outer surface of the blanking pipe 1301. The blanking pipe 1301 is arranged above the square groove B through a through hole 1302. A square groove 1304 is provided below the through hole 1302. The sleeve plate 1305 is movably connected to the top surface of the inner wall of the square groove 1304 through an electric push rod B1307. The lower end surface of the blanking pipe 1301 is fixedly connected with a discharge head 1306. The liquid silicone in the housing 5 can be extruded by the discharge head 1306 through the blanking pipe 1301. By controlling the electric push rod B1307, the sleeve plate 1305 can be driven to move downward, the telescopic hose 1303 is stretched, and the discharge head 1306 moves downward and enters the inner side of the injection hole 16.

[0030] When the injection molding die for the liquid silicone rubber watch band is in use, first turn on the power supply. The hydraulic rod 3 drives the lifting plate 6 to move downward. When the upper die 12 contacts the lower die 8, the insertion rod 21 inserts into the inner side of the insertion hole 18. Then, turn on the switches of the electromagnet A and the electromagnet B. At this time, the upper die 12 and the lower die 8 are closed and tightly connected. By providing the partition plate 22 and the limiting groove 20, the partition plate 22 is clamped into the inner side of the limiting groove 20, which can prevent glue overflow. By providing the feeding mechanism 13, turn on the switches of the electric push rod B 1307 and the solenoid valve. The electric push rod B 1307 works to drive the sleeve plate 1305 to move downward. The telescopic hose 1303 is stretched, and the discharging head 1306 moves downward and enters the inner side of the injection hole 16. The liquid silicone rubber is squeezed into the inner sides of the upper die cavity 15 and the lower die cavity 19 through the injection hole 16. Then, by controlling the electric push rod B 1307, the discharging head 1306 moves upward and leaves the inner side of the injection hole 16. At this time, the threaded rod 1101 can be rotated, so that the threaded rod 1101 moves outward in the threaded hole 1105, driving the clamping block 1103 to move. The clamping block 1103 leaves the inner side of the clamping groove 1104, releasing the limit on the upper die 12. Then, turn on the switch of the motor 9, and control the forward and reverse rotation of the motor 9 to drive the rotating shaft 17 to rotate back and forth, thereby driving the upper die 12 and the lower die 8 to rotate back and forth by a certain angle, making the liquid silicone rubber shake in the inner sides of the lower die cavity 19 and the upper die cavity 15, accelerating its molding speed, and making the injection process of the liquid silicone rubber more uniform, improving the work efficiency. After the molding is completed, rotate the threaded rod 1101 in the reverse direction, so that the threaded rod 1101 moves inward in the threaded hole 1105, driving the clamping block 1103 to be clamped into the inner side of the clamping groove 1104, facilitating the upward movement of the upper die 12 and separating it from the lower die 8. By providing the heat dissipation mechanism 10, when the water pump 1004 works, the water in the water tank 1003 can be transported to the cooling layer 1006 through the water pipe A and the water pipe B. Then, by controlling the electric push rod A 1002, the U-shaped plate 1005 is driven to move upward, so that the upper end surface of the heat dissipation fin 1007 contacts the lower end surface of the lower die 8, thereby expanding the heat dissipation area of the lower die 8. And the heat dissipation fin 1007 can transfer the low temperature of the cooling layer 1006 to the lower die 8, accelerating the heat dissipation speed of the lower die 8. This utility model can swing the upper die 12 and the lower die 8 back and forth in a small range, making the injection process more uniform, accelerating the molding speed, having good heat dissipation effect, reducing the cooling time of the watch band, and improving the production efficiency.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. A liquid silicone watchband molding injection mold, comprising an L-shaped base (1) and a motor (9), characterized in that: The upper end surface of the L-shaped base (1) is provided with a base (7), the upper end surface of the base (7) is provided with a lower mold (8) through a square groove A, four end corners of the upper end surface of the lower mold (8) are provided with insertion holes (18), the upper end surface of the lower mold (8) is evenly provided with a plurality of lower mold grooves (19), the outer sides of the lower mold grooves (19) are provided with limiting grooves (20), the front and rear end surfaces of the lower mold (8) are fixedly provided with rotating shafts (17), the lower end of the lower mold (8) is provided with a heat dissipation mechanism (10), the upper end of the L-shaped base (1) is provided with a top plate (2), the lower end of the top plate (2) is provided with a hydraulic rod (3) A lifting plate (6) is movably connected, a shell (5) is installed on the upper end surface of the lifting plate (6), a square groove B is arranged on the lower end surface of the lifting plate (6), an upper mold (12) is movably connected to the inner side of the square groove B through a limiting mechanism (11), a plurality of upper mold grooves (15) are evenly arranged on the lower end surface of the upper mold (12), a partition plate (22) is installed on the outer side of the upper mold groove (15), four end corners of the lower end surface of the upper mold (12) are installed with insertion rods (21), injection holes (16) are arranged above the upper mold grooves (15), and a plurality of material discharge mechanisms (13) are evenly arranged above the inside of the lifting plate (6).

2. A liquid silicone watchband molding injection mold according to claim 1, characterized in that: A liquid silicone box (4) is installed in the middle of the upper end surface of the top plate (2), and a hydraulic pump (14) is installed in the middle of the lower end surface of the top plate (2). The hydraulic pump (14) is connected to the liquid silicone box (4) via a connecting pipe A, and the hydraulic pump (14) is connected to the inside of the shell (5) via a connecting pipe B. A solenoid valve is installed on the inner side of the injection hole (16), support plates are installed on both sides of the outer surface of the lifting plate (6), and sliding rods are installed at the four end corners of the lower end surface of the top plate (2), and the support plates pass through the sliding rods.

3. The liquid silicone watchband molding injection mold according to claim 1, characterized in that: The output end of the motor (9) is fixedly connected to the front end face of one of the rotating shafts (17) via a coupling, and the rear end face of the other rotating shaft (17) is rotatably connected to the inner wall of the square groove A via a bearing. The insertion hole (18) is adapted to the insertion rod (21), and an electromagnet A is installed on the upper end face of the insertion hole (18), and an electromagnet B is installed on the lower end face of the insertion rod (21). The magnetic poles of the electromagnet A and the electromagnet B are opposite, and the limiting groove (20) is adapted to the partition plate (22).

4. The liquid silicone watchband molding injection mold according to claim 1, characterized in that: The limiting mechanism (11) comprises a threaded rod (1101), the threaded rod (1101) is arranged on the front end face and the rear end face of the lifting plate (6) through a threaded hole (1105), the threaded rod (1101) is screwed into the threaded hole (1105), the threaded hole (1105) is connected to the square groove B through a receiving groove (1102), the two threaded rods (1101) have opposite sides thereof rotatably connected with a clamping block (1103) through a bearing, the front end face and the rear end face of the upper mold (12) are both provided with a clamping groove (1104), the clamping groove (1104) is adapted to the clamping block (1103), and the size of the clamping block (1103) is smaller than the size of the receiving groove (1102).

5. The liquid silicone watchband molding injection mold according to claim 1, characterized in that: The heat dissipation mechanism (10) comprises a U-shaped plate (1005), wherein the U-shaped plate (1005) is arranged below the lower mold (8) via a groove (1001), the U-shaped plate (1005) and the groove (1001) are movably connected via an electric push rod A (1002), a cooling layer (1006) is arranged inside the U-shaped plate (1005), and a plurality of heat dissipation fins (1007) are evenly mounted on the upper end surface of the U-shaped plate (1005).

6. The liquid silicone watchband molding injection mold according to claim 5, characterized in that: Through grooves are provided at the front and rear ends of the upper end surface of the U-shaped plate (1005); a water tank (1003) is installed at the rear end surface of the base (7); a water pump (1004) is installed at the upper end surface of the water tank (1003); the water tank (1003) and the water pump (1004) are connected via a water pipe A; and the water pump (1004) and the cooling layer (1006) are connected via a water pipe B.

7. The liquid silicone watchband molding injection mold according to claim 1, characterized in that: The feeding mechanism (13) comprises a feeding tube (1301), the upper end surface of the feeding tube (1301) extends to the interior of the shell (5), the middle lower section of the feeding tube (1301) is configured as a retractable hose (1303), a sleeve plate (1305) is sleeved below the outer surface of the feeding tube (1301), the feeding tube (1301) is arranged above the square groove B through a through hole (1302), a square groove (1304) is arranged below the through hole (1302), the sleeve plate (1305) is movably connected to the top surface of the inner wall of the square groove (1304) through an electric push rod B (1307), and a discharge head (1306) is fixedly connected to the lower end surface of the feeding tube (1301).

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