Multi-cavity synchronous forming equipment of camera injection mold

Abstract

The invention belongs to the technical field of injection molding, and discloses multi-cavity synchronous molding equipment of a camera injection mold, which comprises a base, a lower mold is arranged at the top end of the base, an air cylinder is mounted at the bottom of the lower mold, the air cylinder is arranged in the base, an upper mold is arranged above the lower mold, and cavities are uniformly formed in the upper mold and the lower mold; the bottoms of the four corners of the upper die are fixedly connected with guide shafts, the four guide shafts are embedded into the four corners of the lower die respectively, and the lower die is in sliding connection with the guide shafts. An injection molding opening is fixedly connected to the top end of the upper mold, a main runner is arranged at the bottom end of the injection molding opening, branch runners are connected to the two ends of the main runner, and the main runner and the branch runners are formed in the upper mold. The production efficiency is greatly improved, and the production period is shortened, so that the efficiency of the whole production process is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding, and in particular relates to a multi-cavity synchronous molding device for a camera injection mold. Background Art

[0002] Camera injection molds are key process equipment used to produce plastic components such as camera housings, brackets, and lens mounts. Their design, manufacturing, and application directly affect the quality, cost, and production efficiency of camera products. Molding equipment (injection molding machines) are the core equipment for camera injection mold production, and their performance directly affects the molding efficiency, precision, and product yield of the mold.

[0003] After searching, patent CN218453152U shows an injection mold for a camera cover, including a mounting base, the upper end of the inner side of the mounting base is fixedly connected to a lower mold base, the upper end surface of the lower mold base is provided with a molding cavity, a connecting rod is provided on the side of the upper end of the lower mold base, the upper end of the connecting rod extends to the upper side of the lower mold base and is fixedly connected to an upper mold base, a convex mold plate is fixedly installed on the lower end of the upper mold base, a top plate is provided on the inner side of the molding cavity, and a lifting plate is provided on the lower end of the inner side of the mounting base. The injection mold for the camera cover enters the molding cavity through the convex mold plate, thereby forming a product cavity, facilitating the injection molding production of the camera cover, and sending the coolant into the heat exchange coil through the water inlet pipe, thereby performing heat exchange cooling on the upper and lower mold bases, facilitating the rapid cooling and molding of the product, and improving production efficiency.

[0004] The current equipment can only process a single mold during each operation. This limitation significantly restricts overall production efficiency and leads to a series of inefficiencies. Since it can only focus on processing one mold at a time, batch processing cannot be achieved. This not only prolongs the production cycle, but also increases waiting time and wastes human resources, ultimately making it difficult to effectively improve the efficiency of the overall production process. Summary of the Invention

[0005] The object of the present invention is to provide a multi-cavity synchronous molding device for a camera injection mold to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-cavity synchronous molding device for a camera injection mold, comprising a base, a lower mold being provided at the top of the base, a cylinder being installed at the bottom of the lower mold, the cylinder being provided inside the base, an upper mold being provided above the lower mold, cavities being evenly formed inside the upper and lower molds, guide shafts being fixedly connected to the bottoms of the four corners of the upper mold, the four guide shafts being respectively embedded in the four corners of the lower mold, and the lower mold being slidably connected to the guide shafts;

[0007] The top of the upper mold is fixedly connected with an injection port, the bottom of the injection port is provided with a main channel, both ends of the main channel are connected with branch channels, and the main channel and the branch channels are both opened inside the upper mold.

[0008] During operation, the material is diverted to multiple cavities through multiple main channels and branch channels. Compared with traditional single mold production, it greatly improves production efficiency and shortens production cycle, thereby effectively improving the efficiency of the overall production process.

[0009] As a further technical solution of the present invention, a buffer portion is provided between the main channel and the branch channel.

[0010] The buffer part is set at the connection between the main channel and the branch channel, which can reduce the sudden change of the melt flow velocity in the flow channel and reduce turbulence, thereby reducing the risk of surface defects on the product and improving the production efficiency and product quality of the multi-cavity synchronous molding equipment.

[0011] As a further technical solution of the present invention, a filter is embedded inside the injection port.

[0012] As a further technical solution of the present invention, a connecting shaft is provided at the top of the filter screen, a filter plate is installed on the outer wall of the connecting shaft, and two filter plates are symmetrically provided.

[0013] The connecting shaft and the buffer part cooperate to filter the material in a graded manner. Through physical interception and surface retention effects, impurities are retained in the front section of the main channel to prevent them from entering the precision mold flow channel. This can significantly reduce the product's appearance defect rate such as black spots, silver streaks, flow marks, etc., and improve the yield rate.

[0014] As a further technical solution of the present invention, a ring gear is installed on the outer wall of the filter plate through a connecting assembly, and the ring gear is rotatably installed inside the upper mold. One side of the ring gear is meshed with a transmission gear, and a rotating shaft is fixedly installed on the inner wall of the transmission gear, and a motor is installed at the bottom end of the rotating shaft.

[0015] During operation, the motor can be started by controlling the PLC. When the motor starts, it drives the rotating shaft to rotate. The rotation of the rotating shaft drives the rotation of the transmission gear. The rotation of the transmission gear drives the rotation of the ring gear. The rotation of the ring gear drives the rotation of the filter plate, so that the filter plate and the material are in dynamic contact, which prevents the melt from passing through the filter screen in a fixed path. Impurities are easily accumulated at the entrance of the filter hole to form a "filter cake layer", which causes the pressure difference to rise rapidly and requires frequent shutdown to replace the filter screen. The rotation of the filter plate makes the melt flow direction and the filter hole form a dynamic angle, which destroys the stability of impurity accumulation and helps to reduce the frequency of shutdown replacement.

[0016] As a further technical solution of the present invention, the connecting shaft and the filter are rotationally connected.

[0017] As a further technical solution of the present invention, the connecting assembly includes a connecting groove opened on the inner wall of the ring gear, a connecting rod is embedded in the interior of the connecting groove, and the connecting rod is installed inside the filter plate.

[0018] As a further technical solution of the present invention, one end of the filter plate is fixedly connected to a limit plate, the limit plate is slidably installed inside the connecting shaft, and a first spring is provided on one side of the limit plate.

[0019] As a further technical solution of the present invention, a fixing block is fixedly connected to the top of the filter plate.

[0020] As a further technical solution of the present invention, a baffle is slidably connected to the inner wall of the connecting groove, and a second spring is installed on one side of the baffle.

[0021] The elastic potential energy of the second spring causes the baffle to always tend to move outward. When the filter plate is removed, the elastic potential energy of the second spring is released to push the baffle outward, so that one side of the baffle is horizontal with the end of the connecting groove, thereby sealing and protecting it.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention is provided with multiple main channels and branch channels. When working, the cylinder drives the cavity to move upward, so that the cavity moves to the bottom end of the upper mold for mold closing, and then injection is performed through the injection port. The material is then diverted to multiple cavities through the main channel and branch channels. Compared with traditional single mold production, the production efficiency is greatly improved, the production cycle is shortened, and the efficiency of the overall production process is effectively improved.

[0024] 2. The present invention is set up to rotate the connecting shaft. When working, the motor can be started by PLC control. When the motor is started, the rotating shaft is driven to rotate. The rotation of the rotating shaft drives the rotation of the transmission gear. The rotation of the transmission gear drives the rotation of the ring gear. The rotation of the ring gear drives the rotation of the filter plate, so that the filter plate and the material are in dynamic contact, which avoids the melt passing through the filter screen in a fixed path. Impurities are easily accumulated at the entrance of the filter hole to form a "filter cake layer", resulting in a rapid increase in pressure difference, which requires frequent shutdown to replace the filter screen. The rotation of the filter plate makes the melt flow direction and the filter hole form a dynamic angle, which destroys the stability of impurity accumulation and helps to reduce the frequency of shutdown replacement.

[0025] 3. The present invention has a setting in which the filter plate slides into the connecting shaft. When the filter plate and the buffer part need to be taken out for maintenance, the filter plate is driven to move by pushing the fixed block toward one side of the connecting shaft. The movement of the filter plate drives the movement of the limit plate, and the movement of the limit plate drives the movement of the connecting rod, so that the connecting rod slides out of the connecting groove, and then the filter plate and the filter screen are taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0029] Figure 4 This is a structural diagram of the main channel and branch channel of the present invention;

[0030] Figure 5 This is a structural diagram of the filter screen and filter plate of the present invention;

[0031] Figure 6 Schematic diagram of the cross-section of the ring gear structure of the present invention;

[0032] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0033] Figure 8 It is a structural schematic diagram of the filter plate of the present invention.

[0034] In the figure: 1. Base; 2. Lower mold; 3. Upper mold; 4. Cavity; 5. Guide shaft; 6. Cylinder; 7. Injection port; 8. Main channel; 9. Branch channel; 10. Buffer; 11. Filter; 12. Connecting shaft; 13. Filter plate; 14. Ring gear; 15. Transmission gear; 16. Rotating shaft; 17. Motor; 18. Limit plate; 19. First spring; 20. Connecting rod; 21. Connecting groove; 22. Baffle; 23. Second spring; 24. Fixed block. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figures 1 to 8 As shown, in an embodiment of the present invention, a multi-cavity synchronous molding device for a camera injection mold includes a base 1, a lower mold 2 is provided on the top of the base 1, a cylinder 6 is installed at the bottom of the lower mold 2, and the cylinder 6 is arranged inside the base 1, an upper mold 3 is provided above the lower mold 2, and mold cavities 4 are evenly opened inside the upper mold 3 and the lower mold 2, and the bottoms of the four corners of the upper mold 3 are fixedly connected to guide shafts 5, which are respectively embedded in the four corners of the lower mold 2, and the lower mold 2 and the guide shafts 5 are slidably connected;

[0037] The top of the upper mold 3 is fixedly connected to an injection port 7 , the bottom of the injection port 7 is provided with a main channel 8 , both ends of the main channel 8 are connected to branch channels 9 , and the main channel 8 and the branch channels 9 are both opened inside the upper mold 3 .

[0038] Each main channel 8 is connected to two branch channels 9, and the branch channels 9 are connected to the top of the cavity 4 opened inside the upper mold 3 in an L-shaped structure to reduce the problem of bubbles caused by excessive flow rate;

[0039] Through the setting of multiple main channels 8 and branch channels 9, during operation, the cylinder 6 drives the cavity 4 to move upward, so that the cavity 4 moves to the bottom end of the upper mold 3 for mold closing, and then injection is carried out through the injection port 7, and then the liquid is diverted to multiple cavities 4 through the main channel 8 and branch channels 9. Compared with traditional single mold production, the production efficiency is greatly improved, the production cycle is shortened, and the efficiency of the overall production process is effectively improved.

[0040] like Figure 4 As shown, a buffer portion 10 is provided between the main channel 8 and the branch channel 9 .

[0041] By setting the buffer part 10, the buffer part 10 is set at the connection between the main channel 8 and the branch channel 9, which can reduce the sudden change of the flow velocity of the melt in the flow channel and reduce turbulence, thereby reducing the risk of surface defects of the product (such as silver streaks and bubbles) and improving the production efficiency and product quality of the multi-cavity synchronous molding equipment.

[0042] like Figure 2 and Figure 3 As shown, a filter screen 11 is embedded in the injection port 7 .

[0043] The filter 11 is set at the entrance of the main channel 8 to intercept impurities before entering the channel, preventing impurities from mixing into the injection molding production, which may cause product defects (such as black spots, air holes, and strength loss) and mold damage (such as channel blockage). Filtering the material entering the mold helps to improve product quality and production stability.

[0044] like Figure 3 、 Figure 5 、 Figure 6 and Figure 8 As shown, a connecting shaft 12 is provided at the top of the filter screen 11, and a filter plate 13 is installed on the outer wall of the connecting shaft 12, and two filter plates 13 are symmetrically provided.

[0045] By cooperating with the connecting shaft 12 and the buffer part 10, the material is graded and filtered, and impurities are retained in the front section of the main channel 8 through physical interception and surface retention effects to prevent them from entering the precision mold flow channel. This can significantly reduce the appearance defect rate of products such as black spots, silver streaks, flow marks, etc., and improve the yield rate.

[0046] like Figure 3 、 Figure 5、 Figure 6 and Figure 8 As shown, the outer wall of the filter plate 13 is installed with a ring gear 14 through a connecting assembly. The ring gear 14 is rotatably installed inside the upper mold 3. One side of the ring gear 14 is meshed with a transmission gear 15. The inner wall of the transmission gear 15 is fixedly installed with a rotating shaft 16, and the bottom end of the rotating shaft 16 is installed with a motor 17.

[0047] By setting the rotation of the connecting shaft 12, when working, the motor 17 can be started by PLC control. When the motor 17 is started, the rotating shaft 16 is driven to rotate. The rotation of the rotating shaft 16 drives the rotation of the transmission gear 15. The rotation of the transmission gear 15 drives the rotation of the ring gear 14. The rotation of the ring gear 14 drives the rotation of the filter plate 13, so that the filter plate 13 is in dynamic contact with the material, avoiding the melt passing through the filter screen 11 in a fixed path. Impurities are easily accumulated at the entrance of the filter hole to form a "filter cake layer", resulting in a rapid increase in pressure difference, which requires frequent shutdown to replace the filter screen 11. The rotation of the filter plate 13 makes the melt flow direction and the filter hole form a dynamic angle, which destroys the stability of impurity accumulation and helps to reduce the frequency of shutdown replacement.

[0048] like Figure 5 and Figure 6 As shown, the connecting shaft 12 and the filter screen 11 are rotationally connected.

[0049] like Figure 5 、 Figure 6 and Figure 7 As shown, the connecting assembly includes a connecting groove 21 opened on the inner wall of the ring gear 14 , a connecting rod 20 is embedded in the connecting groove 21 , and the connecting rod 20 is installed inside the filter plate 13 .

[0050] During operation, one end of the connecting rod 20 is embedded in the connecting groove 21 , thereby connecting the filter plate 13 to the ring gear 14 .

[0051] like Figure 6 As shown, one end of the filter plate 13 is fixedly connected to a limit plate 18 , and the limit plate 18 is slidably installed inside the connecting shaft 12 . A first spring 19 is provided on one side of the limit plate 18 .

[0052] During installation, the filter plate 13 and the filter screen 11 are placed into the injection port 7. At this time, the end of the connecting rod 20 slides into the interior of the filter plate 13, and the first spring 19 deforms to store elastic potential energy.

[0053] When the connecting rod 20 moves to one side of the connecting groove 21 , the elastic potential energy of the first spring 19 is released to embed the connecting rod 20 into the connecting groove 21 for connection.

[0054] like Figure 5 、 Figure 6 and Figure 8 As shown, a fixing block 24 is fixedly connected to the top of the filter plate 13 .

[0055] When the filter plate 13 and the buffer part 10 need to be taken out for maintenance, the fixing block 24 is pushed toward one side of the connecting shaft 12 to drive the filter plate 13 to move. The movement of the filter plate 13 drives the movement of the limit plate 18. The movement of the limit plate 18 drives the movement of the connecting rod 20, so that the connecting rod 20 slides out of the connecting groove 21, and then the filter plate 13 and the filter screen 11 are taken out.

[0056] like Figure 6 and Figure 7 As shown, a baffle 22 is slidably connected to the inner wall of the connecting groove 21 , and a second spring 23 is installed on one side of the baffle 22 .

[0057] The elastic potential energy of the second spring 23 causes the baffle 22 to always have a tendency to move outward. When the filter plate 13 is removed, the elastic potential energy of the second spring 23 is released to push the baffle 22 outward, so that one side of the baffle 22 is horizontal with the end of the connecting groove 21, thereby blocking and protecting it.

[0058] Working principle and usage process:

[0059] During operation, the fixing block 24 is first pushed toward one side of the connecting shaft 12, thereby driving the filter plate 13 to move. The movement of the filter plate 13 drives the movement of the limiting plate 18. The movement of the limiting plate 18 drives the movement of the connecting rod 20, causing the connecting rod 20 to slide into the interior of the filter plate 13. At the same time, the first spring 19 deforms to store elastic potential energy.

[0060] Then, the filter plate 13 and the filter screen 11 are placed into the injection port 7. When the connecting rod 20 moves to one side of the connecting groove 21, the first spring 19 releases the elastic potential energy to embed the connecting rod 20 into the connecting groove 21 for connection.

[0061] Then, the cavity 4 is driven upward by the cylinder 6, so that the cavity 4 moves to the bottom end of the upper mold 3 for mold closing, and then injection is performed through the injection port 7. During injection, the impurities before entering the flow channel are intercepted by the filter 11, and the motor 17 is started by the PLC control. When the motor 17 is started, the rotation shaft 16 is driven to rotate, and the rotation of the rotation shaft 16 drives the rotation of the transmission gear 15. The rotation of the transmission gear 15 drives the rotation of the ring gear 14. The rotation of the ring gear 14 drives the rotation of the filter plate 13, so that the filter plate 13 is in dynamic contact with the material to filter it;

[0062] The filtered material is then diverted through the main channel 8 and the branch channel 9 to multiple cavities 4 for multi-cavity molding;

[0063] After work, when the filter plate 13 and the filter screen 11 need to be maintained, the fixing block 24 is pushed toward one side of the connecting shaft 12 to drive the filter plate 13 to move, and the movement of the filter plate 13 drives the movement of the limit plate 18, and the movement of the limit plate 18 drives the movement of the connecting rod 20, so that the connecting rod 20 slides out of the connecting groove 21, and then the filter plate 13 is lifted upward to remove the filter plate 13 and the filter screen 11 from the injection port 7 for cleaning and maintenance.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-cavity synchronous molding device for a camera injection mold, comprising a base (1), characterized in that: A lower mold (2) is provided at the top of the base (1), a cylinder (6) is installed at the bottom of the lower mold (2), and the cylinder (6) is arranged inside the base (1). An upper mold (3) is provided above the lower mold (2), and cavities (4) are evenly opened inside the upper mold (3) and the lower mold (2). The bottoms of the four corners of the upper mold (3) are fixedly connected with guide shafts (5), and the four guide shafts (5) are respectively embedded in the four corners of the lower mold (2), and the lower mold (2) and the guide shafts (5) are slidably connected; The top end of the upper mold (3) is fixedly connected to an injection port (7), the bottom end of the injection port (7) is provided with a main channel (8), both ends of the main channel (8) are connected to branch channels (9), and the main channel (8) and the branch channels (9) are both opened inside the upper mold (3).

2. The multi-cavity synchronous molding device for a camera injection mold according to claim 1, characterized in that: A buffer portion (10) is provided between the main channel (8) and the branch channel (9).

3. The multi-cavity synchronous molding device for a camera injection mold according to claim 1, characterized in that: A filter screen (11) is embedded inside the injection port (7).

4. The multi-cavity synchronous molding device for a camera injection mold according to claim 3, characterized in that: A connecting shaft (12) is provided at the top end of the filter screen (11), and a filter plate (13) is installed on the outer wall of the connecting shaft (12), and two filter plates (13) are symmetrically provided.

5. The multi-cavity synchronous molding device for a camera injection mold according to claim 4, characterized in that: The outer wall of the filter plate (13) is mounted with a ring gear (14) through a connecting assembly. The ring gear (14) is rotatably mounted inside the upper mold (3). One side of the ring gear (14) is meshedly connected with a transmission gear (15). A rotating shaft (16) is fixedly mounted on the inner wall of the transmission gear (15). A motor (17) is mounted at the bottom end of the rotating shaft (16).

6. The multi-cavity synchronous molding device for a camera injection mold according to claim 4, characterized in that: The connecting shaft (12) is rotationally connected to the filter screen (11).

7. The multi-cavity synchronous molding device for a camera injection mold according to claim 1, characterized in that: The connecting assembly comprises a connecting groove (21) formed on the inner wall of the ring gear (14), a connecting rod (20) is embedded in the connecting groove (21), and the connecting rod (20) is installed inside the filter plate (13).

8. The multi-cavity synchronous molding device for a camera injection mold according to claim 7, characterized in that: One end of the filter plate (13) is fixedly connected to a limit plate (18), and the limit plate (18) is slidably mounted inside the connecting shaft (12). A first spring (19) is provided on one side of the limit plate (18).

9. The multi-cavity synchronous molding device for a camera injection mold according to claim 7, characterized in that: The top end of the filter plate (13) is fixedly connected with a fixing block (24).

10. The multi-cavity synchronous molding device for a camera injection mold according to claim 7, characterized in that: A baffle (22) is slidably connected to the inner wall of the connecting groove (21), and a second spring (23) is installed on one side of the baffle (22).

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