A gear supercharged injection mold

Abstract

The utility model relates to injection mold technical field, concretely relates to a gear pressure injection mold, including first mould plate, second mould plate, third mould plate, fourth mould plate, transmission plate and mounting seat, the surface fixed connection of first mould plate has injection pipe, the surface fixed connection of third mould plate and fourth mould plate side close has first mould core and second mould core respectively, be provided with stripping assembly between second mould plate and third mould plate, stripping assembly includes transmission shaft, transmission sprocket, transmission chain, driving gear, first transmission gear, rotation axis, connecting groove, driven gear, internal thread core, second transmission gear, connector, cooling pipe, mounting bracket, hydraulic motor and driving sprocket, through the cooperation of cooling pipe, connector cooperation injects the inside of rotation axis with coolant, makes internal thread core and the plastic liquid of surface fast cooling and shaping, avoids the process of rotary stripping and causes product internal thread damage, realizes the quick stripping of discharging and effectively improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a gear booster injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] In the process of injection molding products with internal threads, existing injection molds usually use rotation demolding. However, since the surface of the injection molded product is relatively soft in the initial stage, direct demolding can easily damage the internal threads. Waiting for the product to cool and harden completely before unmolding takes a long time, resulting in low production efficiency.

[0004] Therefore, it is necessary to invent a gear booster injection mold to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a gear booster injection mold to solve the problem that direct demolding can easily damage the internal threads, and that waiting for complete cooling and hardening before unloading results in low production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gear booster injection mold, comprising a first template, a second template, a third template, a fourth template, a transmission plate, and a mounting base. An injection tube is fixedly connected to the surface of the first template. A first mold core and a second mold core are fixedly connected to the adjacent surfaces of the third and fourth templates, respectively. A demolding assembly is provided between the second and third templates. The demolding assembly includes a transmission shaft, a transmission sprocket, a transmission chain, a drive gear, a first transmission gear, a rotating shaft, a connecting groove, a driven gear, an internal threaded core, a second transmission gear, a connector, a cooling pipe, a mounting bracket, a hydraulic motor, and a drive sprocket.

[0007] By adopting the above technical solution, the injection tube is used to inject the molten plastic liquid into the space between the first mold core and the second mold core for shaping, the internal thread core is used to inject internal threads into the product, and the cooling pipe and connector work together to inject coolant into the inside of the rotating shaft, so that the plastic liquid on the surface of the internal thread core and the surface can be cooled and shaped quickly, thereby improving the hardness of the internal thread of the product and avoiding damage to the internal thread of the product during the rotation and demolding process of the internal thread core.

[0008] Optionally, the right side surface of the first mold core is provided with four sets of first injection grooves and first injection grooves, the left side surface of the third mold template is provided with multiple sets of mounting grooves, the end of the first injection groove is connected to the mounting groove, and the left side surface of the second mold core is provided with a second injection groove and a second injection groove.

[0009] By adopting the above technical solution, the injection tube injects the material into the interior of the first injection tank and the second injection tank, and the first injection tank and the second injection tank cooperate to guide the material into the interior of the first injection molding tank and the second injection molding tank.

[0010] Optionally, the mounting bracket is fixedly installed on the upper end of the second and third templates, the hydraulic motor is fixedly installed on the right side surface of the mounting bracket, the drive sprocket is fixedly connected to the output end on the left side of the hydraulic motor, the transmission shaft is rotatably connected to the interior of the second template near the upper side, the transmission sprocket is fixedly connected to the left end of the transmission shaft, and the upper and lower ends of the transmission chain are respectively connected to the transmission sprocket and the drive sprocket.

[0011] By adopting the above technical solution, the hydraulic motor is used to drive the drive sprocket to rotate, and the drive sprocket and the transmission chain work together to drive the transmission sprocket and the transmission shaft to rotate.

[0012] Optionally, the driving gear is fixedly connected to the right end of the transmission shaft, and multiple sets of rotating shafts are rotatably connected to the middle position of the second template. Each set of rotating shafts has a driven gear fixedly connected to its surface at the right side of the second template. Each set of rotating shafts has an internal threaded core fixedly connected to its right end. The internal threaded core passes through the mounting groove and is inserted into the interior of the first injection groove. The driving gear, the first transmission gear, the second transmission gear, and the multiple sets of driven gears are all located inside the mounting groove.

[0013] By adopting the above technical solution, the drive shaft drives the drive gear to rotate during the rotation process.

[0014] Optionally, the first transmission gear is rotatably connected to the second template surface at a position between the driving gear and the driven gear, and the first transmission gear is meshed with the driving gear and the driven gear. The second transmission gear is rotatably connected to the second template surface at a position between multiple sets of driven gears, and the second transmission gear is meshed with multiple sets of driven gears.

[0015] By adopting the above technical solution, the driving gear drives multiple sets of driven gears on the upper side to rotate through the first transmission gear. The multiple sets of driven gears on the upper side drive multiple sets of driven gears on the lower side to rotate through the second transmission gear, thereby driving multiple sets of internal thread cores to rotate and pushing the shaped product outward.

[0016] Optionally, each of the multiple sets of rotating shafts has a connector rotatably connected to its left end, and a plug is fixedly connected to the right end of the connector. The plug is inserted into the inner side of the left end of the rotating shaft, and multiple sets of connecting protrusions are fixedly connected to the surface of the plug. Multiple sets of connecting grooves are opened on the inner wall of the rotating shaft near the left end, and the connecting protrusions are stuck inside the connecting grooves. Both the connector and the plug have two sets of guide holes inside, and a cooling pipe is fixedly connected to the left end of each set of guide holes.

[0017] Optionally, the second template is fixedly connected to the right side of the first template, and the third template is fixedly connected to the right side of the second template.

[0018] By adopting the above technical solution, the first template, the second template, and the third template are in a fixed state.

[0019] Optionally, the fourth template is disposed to the right of the third template, the fourth template is fixedly connected to the left end of the mounting base, and the transmission plate is disposed between the fourth template and the mounting base.

[0020] By adopting the above technical solution, a hydraulic cylinder is installed on the right side of the mounting base, and the hydraulic cylinder drives the fourth template, the mounting base and the transmission plate to slide left and right.

[0021] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model utilizes a cooling pipe and connector to inject coolant into the inner side of the rotating shaft, which rapidly cools and solidifies the plastic liquid on the inner thread core and surface, thereby increasing the hardness of the inner thread of the product and preventing damage to the inner thread of the product during the rotation and demolding process of the inner thread core. At the same time, it can achieve rapid demolding and unloading, effectively improving production efficiency. 2. This utility model uses a hydraulic motor to drive the internal threaded core for demolding. The hydraulic motor has high torque, quick start-up, and low inertia, which can demold multiple products at the same time, thereby enabling one-time injection molding of multiple products and further improving product production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the left side of the exploded view of this utility model; Figure 3 This is a schematic diagram of the right side of the exploded view of this utility model; Figure 4 This is a schematic diagram of the left side structure of the second and third templates of this utility model; Figure 5 This is a schematic diagram of the right side structure of the second and third templates of this utility model; Figure 6 This is a schematic diagram of the inner structure of the third and fourth templates of this utility model; Figure 7 This is a schematic diagram of the internal structure of the connector and drive shaft of this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. First template; 11. Injection tube; 2. Second template; 21. Drive shaft; 22. Drive sprocket; 23. Drive chain; 24. Drive gear; 25. First drive gear; 26. Rotating shaft; 261. Connecting groove; 27. Driven gear; 28. Internal threaded core; 29. ​​Second drive gear; 210. Connector; 2101. Plug; 2102. Connecting protrusion; 2103. Guide hole; 211. Cooling pipe; 3. Third template; 31. Mounting groove; 32. First mold core; 33. First injection groove; 34. First injection groove; 4. Mounting bracket; 41. Hydraulic motor; 42. Drive sprocket; 5. Fourth template; 51. Second mold core; 52. Second injection groove; 53. Second injection groove; 6. Transmission plate; 7. Mounting base. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figures 1 to 6 The gear booster injection mold shown includes a first template 1, a second template 2, a third template 3, a fourth template 5, a transmission plate 6, and a mounting base 7. The second template 2 is fixedly connected to the right side of the first template 1, and the third template 3 is fixedly connected to the right side of the second template 2. The fourth template 5 is located on the right side of the third template 3 and is fixedly connected to the left end of the mounting base 7. The transmission plate 6 is located between the fourth template 5 and the mounting base 7. An injection tube 11 is fixedly connected to the surface of the first template 1. A first mold core 32 and a second mold core 51 are fixedly connected to the adjacent surfaces of the third template 3 and the fourth template 5, respectively. The right surface of the first mold core 32 has four sets of... The mold core 3 has an injection groove 33 and a first injection groove 34. The left side surface of the third mold plate 3 has multiple sets of mounting grooves 31. The end of the first injection groove 33 is connected to the mounting groove 31. The left side surface of the second mold core 51 has a second injection groove 52 and a second injection groove 53 respectively. A demolding assembly is provided between the second mold plate 2 and the third mold plate 3. The demolding assembly includes a drive shaft 21, a drive sprocket 22, a drive chain 23, a drive gear 24, a first drive gear 25, a rotating shaft 26, a connecting groove 261, a driven gear 27, an internal thread core 28, a second drive gear 29, a connector 210, a cooling pipe 211, a mounting bracket 4, a hydraulic motor 41, and a drive sprocket 42.

[0026] In the second template 2, the second transmission gear 29 and the third template 3 are both provided with insertion holes. During the installation of the first template 1, the second template 2 and the third template 3, the injection tube 11 extends through the insertion holes inside the second transmission gear 29 and the third template 3 to the inside of the first injection groove 34.

[0027] Meanwhile, sliding rods are fixedly connected to the four corners of the left side surface of the transmission plate 6, and sliding grooves are opened at the four corners of the fourth template 5. The sliding rods are slidably connected to the sliding grooves. At the same time, multiple sets of connecting holes are opened inside the fourth template 5 and the second mold core 51. Multiple sets of insert rods are fixedly connected to the left side surface of the transmission plate 6, and the insert rods are slidably connected to the connecting holes.

[0028] During the injection molding process, the hydraulic cylinder on the right side of the mounting base 7 pushes the mounting base 7, the fourth template 5, and the transmission plate 6 to the left, causing the right sides of the fourth template 5 and the third template 3 to abut. At the same time, the insert rod on the side of the transmission plate 6 passes through the connecting hole and abuts against the inner wall of the first injection tank 33. At this time, the feeder injects liquid into the interior of the first injection tank 33 and the second injection tank 52 through the injection tube 11, so that the product is shaped inside the first injection tank 33 and the second injection tank 52. At the same time, under the action of multiple sets of insert rods, multiple sets of holes will appear on the surface of the product.

[0029] During the material feeding process, the mounting base 7 and the fourth template 5 are first pulled to the right by the hydraulic cylinder, so that the product is demolded from the second injection groove 52. Then, the fourth template 5 pushes the transmission plate 6 to the right, pulling out multiple sets of insert rods from the surface of the product and demolding the multiple sets of insert rods. Then, the hydraulic motor 41 drives the internal thread core 28 to rotate, demolding the product from the surface of the first injection groove 33 and the internal thread core 28.

[0030] See Figure 4 and Figure 5The mounting bracket 4 is fixedly installed on the upper end of the second template 2 and the third template 3. The hydraulic motor 41 is fixedly installed on the right side surface of the mounting bracket 4. The drive sprocket 42 is fixedly connected to the output end on the left side of the hydraulic motor 41. The drive shaft 21 is rotatably connected to the interior of the second template 2 near the upper side. The drive sprocket 22 is fixedly connected to the left end of the drive shaft 21. The upper and lower ends of the drive chain 23 are respectively connected to the drive sprocket 22 and the drive sprocket 42. The drive gear 24 is fixedly connected to the right end of the drive shaft 21. Multiple sets of rotating shafts 26 are rotatably connected to the middle position of the second template 2. Driven gears 2 are fixedly connected to the surfaces of the multiple sets of rotating shafts 26 located on the right side of the second template 2. 7. The right ends of multiple sets of rotating shafts 26 are all fixedly connected with internal threaded cores 28. The internal threaded cores 28 penetrate the mounting groove 31 and are inserted into the interior of the first injection molding groove 33. The driving gear 24, the first transmission gear 25, the second transmission gear 29 and multiple sets of driven gears 27 are all set inside the mounting groove 31. The first transmission gear 25 is rotatably connected to the surface of the second template 2 at a position between the driving gear 24 and the driven gear 27. The first transmission gear 25 is meshed with the driving gear 24 and the driven gear 27. The second transmission gear 29 is rotatably connected to the surface of the second template 2 at a position between the multiple sets of driven gears 27. The second transmission gear 29 is meshed with the multiple sets of driven gears 27.

[0031] Specifically, during the demolding process of the multi-threaded core 28, as the fourth template 5 moves to the right, coolant is injected into the interior of the rotating shaft 26 through the cooling pipe 211 and the connector 210. The coolant cools the internal threaded core 28 and the product on its surface, allowing the product to cool and solidify quickly, effectively improving the hardness of the internal threads. After the insert is withdrawn from the product surface, the hydraulic motor 41 is immediately started. The output end of the hydraulic motor 41 drives the drive sprocket 42 to rotate. The drive sprocket 42, in conjunction with the transmission chain 23, drives the transmission sprocket 22 to rotate. The transmission sprocket 22 drives the drive gear 24 to rotate through the transmission shaft 21. The drive gear 24, in conjunction with the first transmission gear 25 and the second transmission gear 29, drives multiple sets of driven gears 27 to rotate. The driven gears 27 drive the rotating shaft 26 to rotate, thereby driving the internal threaded core 28 to rotate. During the rotation of the internal threaded core 28, the product is pushed outward to achieve demolding.

[0032] See Figure 4 and Figure 7Multiple sets of rotating shafts 26 are rotatably connected to the left end of each shaft 210. The right end of each shaft 210 is fixedly connected to a connector 2101. The connector 2101 is inserted into the inner side of the left end of the rotating shaft 26. Multiple sets of connecting protrusions 2102 are fixedly connected to the surface of the connector 2101. Multiple sets of connecting grooves 261 are opened on the inner wall of the rotating shaft 26 near the left end. The connecting protrusions 2102 are stuck inside the connecting grooves 261. Two sets of guide holes 2103 are opened inside both the shaft 210 and the connector 2101. Cooling pipes 211 are fixedly connected to the left end of both sets of guide holes 2103.

[0033] In addition, the two sets of cooling pipes 211 on the outside of the connector 210 are the inlet pipe and the outlet pipe, respectively. The inlet pipe injects coolant into the interior of the rotating shaft 26 through the guide hole 2103 and then discharges it from the outlet pipe, thereby cooling and shaping the internal thread core 28 and the surface of the product. At the same time, the rotating shaft 26 rotates around the plug 2101 during rotation. Multiple sets of connecting protrusions 2102 and connecting grooves 261 cooperate to improve the stability of the connection between the connector 210 and the rotating shaft 26.

[0034] The working principle of this utility model is as follows: By using the cooling pipe 211 and the connector 210 to inject coolant into the inner side of the rotating shaft 26, the internal thread core 28 and the product surface are quickly cooled and shaped, thereby increasing the hardness of the internal thread of the product and avoiding damage to the internal thread of the product during the rotation and demolding process of the internal thread core 28. At the same time, it can realize rapid demolding and unloading, effectively improving production efficiency. Meanwhile, by using a hydraulic motor 41 to drive the internal thread core 28 to rotate and demold, the hydraulic motor 41 has high torque, fast start-up and low inertia, and can realize demolding of multiple sets of products at the same time, thereby realizing one-time injection molding of multiple sets of products, and further improving product production efficiency.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gear booster injection mold, comprising a first template (1), a second template (2), a third template (3), a fourth template (5), a transmission plate (6), and a mounting base (7), characterized in that: The surface of the first template (1) is fixedly connected to an injection tube (11). The surfaces of the third template (3) and the fourth template (5) that are close to each other are respectively fixedly connected to a first mold core (32) and a second mold core (51). A demolding assembly is provided between the second template (2) and the third template (3). The demolding assembly includes a drive shaft (21), a drive sprocket (22), a drive chain (23), a drive gear (24), a first drive gear (25), a rotating shaft (26), a connecting groove (261), a driven gear (27), an internal thread core (28), a second drive gear (29), a connector (210), a cooling pipe (211), a mounting bracket (4), a hydraulic motor (41), and a drive sprocket (42).

2. The gear booster injection mold according to claim 1, characterized in that: The right side surface of the first mold core (32) is provided with four sets of first injection grooves (33) and first injection grooves (34). The left side surface of the third template (3) is provided with multiple sets of mounting grooves (31). The end of the first injection groove (33) is connected to the mounting groove (31). The left side surface of the second mold core (51) is provided with a second injection groove (52) and a second injection groove (53).

3. The gear booster injection mold according to claim 2, characterized in that: The mounting bracket (4) is fixedly installed on the upper end of the second template (2) and the third template (3). The hydraulic motor (41) is fixedly installed on the right side surface of the mounting bracket (4). The drive sprocket (42) is fixedly connected to the output end on the left side of the hydraulic motor (41). The transmission shaft (21) is rotatably connected to the upper side of the interior of the second template (2). The transmission sprocket (22) is fixedly connected to the left end of the transmission shaft (21). The upper and lower ends of the transmission chain (23) are respectively connected to the transmission sprocket (22) and the drive sprocket (42).

4. A gear booster injection mold according to claim 2, characterized in that: The driving gear (24) is fixedly connected to the right end of the transmission shaft (21). Multiple sets of rotating shafts (26) are rotatably connected to the middle position of the second template (2). Driven gears (27) are fixedly connected to the surfaces of the multiple sets of rotating shafts (26) located on the right side of the second template (2). Internal thread cores (28) are fixedly connected to the right ends of the multiple sets of rotating shafts (26). The internal thread cores (28) penetrate the mounting groove (31) and are inserted into the interior of the first injection groove (33). The driving gear (24), the first transmission gear (25), the second transmission gear (29) and the multiple sets of driven gears (27) are all located inside the mounting groove (31).

5. A gear booster injection mold according to claim 4, characterized in that: The first transmission gear (25) is rotatably connected to the surface of the second template (2) at a position between the driving gear (24) and the driven gear (27). The first transmission gear (25) is meshed with the driving gear (24) and the driven gear (27). The second transmission gear (29) is rotatably connected to the surface of the second template (2) at a position between multiple sets of driven gears (27). The second transmission gear (29) is meshed with multiple sets of driven gears (27).

6. A gear booster injection mold according to claim 1, characterized in that: The left end of each of the multiple sets of rotating shafts (26) is rotatably connected to a connector (210), and the right end of the connector (210) is fixedly connected to a plug (2101). The plug (2101) is inserted into the inner side of the left end of the rotating shaft (26). The surface of the plug (2101) is fixedly connected to multiple sets of connecting protrusions (2102). Multiple sets of connecting grooves (261) are opened on the inner wall of the rotating shaft (26) near the left end. The connecting protrusions (2102) are stuck inside the connecting grooves (261). The interior of both the connector (210) and the plug (2101) is provided with two sets of guide holes (2103). The left end of each set of guide holes (2103) is fixedly connected to a cooling pipe (211).

7. A gear booster injection mold according to claim 1, characterized in that: The second template (2) is fixedly connected to the right side of the first template (1), and the third template (3) is fixedly connected to the right side of the second template (2).

8. A gear booster injection mold according to claim 1, characterized in that: The fourth template (5) is located on the right side of the third template (3), and the fourth template (5) is fixedly connected to the left end of the mounting base (7). The transmission plate (6) is located between the fourth template (5) and the mounting base (7).

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