Injection mold of plastic shell

Abstract

The utility model discloses an injection mould of plastic shell relates to injection mould technical field, including bearing base, upper mould and lower mould, the top of bearing base is fixedly equipped with U-shaped mounting rack, the top inner wall of U-shaped mounting rack is fixedly equipped with two hydraulic cylinder. The device is reasonable in structure, when a control motor is started, two horizontal screws can be driven to rotate synchronously through a vertical rotating shaft, a transmission chain wheel, a transmission chain, a first bevel gear and a second bevel gear, and under the joint cooperation of a fixing block, a horizontal guide rod and a horizontal sliding hole, the horizontal screws rotate to drive a U-shaped clamping block to move horizontally through a movable screw cylinder, so that the clamping block moves horizontally. When the U-shaped clamping block is clamped on the first lug plate and the second lug plate in a sleeving manner, the upper mold and the lower mold can be fixed together, so that the situation that the product quality is influenced due to the fact that the molds are automatically opened by accident can be effectively reduced in the injection molding process, and the mold is stable and reliable in use, good in safety, simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a plastic shell. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. It is suitable for mass production and complex-shaped products and other molding and processing fields. When manufacturing plastic shells, injection molding is generally used for production, so injection molds are required.

[0003] At present, most injection molds are generally clamped and closed by using hydraulic cylinders. If the staff accidentally touches the control button of the hydraulic cylinder during the mold closing and injection molding process, the mold will automatically open, resulting in loose mold closing and affecting the quality of the product, and even causing the material in the mold to automatically flow out and affect the safety of the staff. Further improvement is needed. Therefore, in order to solve the above problems, the present application proposes an injection mold for a plastic shell. Utility Model Content

[0004] The purpose of the present application is to provide an injection mold for a plastic housing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an injection mold for a plastic shell, comprising a supporting base, an upper mold and a lower mold, a U-shaped mounting frame is fixedly installed on the top of the supporting base, two hydraulic cylinders are fixedly installed on the top inner wall of the U-shaped mounting frame, the upper mold is fixedly installed on the output ends of the two hydraulic cylinders, first ear plates are fixedly installed on the two sides of the upper mold away from each other, and second ear plates are fixedly installed on the two sides of the lower mold away from each other, horizontal screws are rotatably installed on the inner walls of the two sides of the U-shaped mounting frame away from each other, mobile screw barrels are threadedly sleeved on the two horizontal screws, and horizontal guide units are installed on both of them, and U-shaped blocks are detachably installed on the ends of the two mobile screw barrels that are close to each other, and the U-shaped blocks are adapted to the first ear plate and the second ear plate, a control motor is fixedly installed on the top of the U-shaped mounting frame through an L-shaped machine base, and a synchronous transmission unit for making the two horizontal screws rotate synchronously is connected to the output end of the control motor.

[0006] Preferably, the synchronous transmission unit includes two vertical rotating shafts, two vertical rotating holes are opened on the top of the U-shaped mounting frame, the two vertical rotating shafts are rotatably installed in the two vertical rotating holes respectively, the output end of the control motor is installed on the top of one of the vertical rotating shafts, the two vertical rotating shafts are fixedly sleeved with a transmission sprocket, the two transmission sprockets are commonly adapted to be equipped with a transmission chain, the bottom ends of the two vertical rotating shafts are fixedly installed with a first bevel gear, the two horizontal screws are fixedly sleeved with a second bevel gear, and the two first bevel gears are respectively meshed with the two second bevel gears.

[0007] Preferably, the horizontal guide unit includes a fixed block fixedly mounted on the bottom of the movable screw barrel, a horizontal guide rod is fixedly mounted on the side of the fixed block, a horizontal sliding hole is opened on the side of the U-shaped mounting frame, and the horizontal guide rod is slidably mounted in the horizontal sliding hole.

[0008] Preferably, a connecting seat is fixedly installed at the end of the movable screw barrel, a connecting block is slidably installed in the connecting seat, the connecting block is fixedly installed on the side of the U-shaped block, a rod sliding hole is provided at the top of the connecting seat, a fixed rod is slidably installed in the rod sliding hole, a fixed socket is provided at the top of the connecting block, the bottom end of the fixed rod extends into the fixed socket, and a control pull block is fixedly installed on the top of the fixed rod.

[0009] Preferably, a reset spring is sleeved on the fixed plug rod, and two ends of the reset spring are respectively fixedly mounted on the top of the connecting seat and the bottom of the control pull block.

[0010] Preferably, a cooling cavity is provided in the lower mold, a water storage cavity is provided in the supporting base, a circulating pump is fixedly provided on the inner wall of the bottom of the water storage cavity, a first water pipe connected to the cooling cavity is fixedly installed at the water outlet of the circulating pump, a second water pipe connected to the cooling cavity is fixedly provided at the bottom of the lower mold, and the bottom end of the second water pipe extends into the water storage cavity.

[0011] Preferably, a plurality of positioning rods are evenly fixedly installed on the bottom of the upper mold, a plurality of positioning holes are evenly opened on the top of the lower mold, and the plurality of positioning rods are slidably installed in the plurality of positioning holes respectively.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. The utility model has a reasonable structure. When the control motor is started, the two horizontal screws are driven to rotate synchronously through the vertical shaft, the transmission sprocket, the transmission chain, the first bevel gear and the second bevel gear. Under the cooperation of the fixed block, the horizontal guide rod and the horizontal slide hole, the rotation of the horizontal screw drives the U-shaped clamping block to move horizontally through the moving screw barrel. When the U-shaped clamping block is clamped on the first ear plate and the second ear plate, the upper mold and the lower mold can be fixed together, so that the situation that the mold is opened automatically by accident and affects the product quality can be effectively reduced during the injection molding process. It is stable and reliable when used, and has good safety, simple structure and convenient use.

[0014] 2. In the utility model, when the control pull block is pulled upward, the fixed plug rod will be moved out of the fixed plug hole to loosen the connecting block. When the control pull block is loosened, the elastic force of the reset spring will drive the fixed plug rod to automatically insert into the fixed plug hole to fix the connecting block. This achieves the purpose of facilitating the disassembly and replacement of the U-shaped card block, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an injection mold of a plastic housing according to an embodiment of the present application;

[0017] Figure 2 This is an enlarged three-dimensional structural diagram of the cooperation between the horizontal screw, the U-shaped block and the vertical rotating shaft in the embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of a front cross-sectional structure of an injection mold of a plastic housing according to an embodiment of the present application;

[0019] Figure 4 It is a partially enlarged structural schematic diagram of the connection between the moving screw barrel and the U-shaped block in the embodiment of the present application.

[0020] In the figure: 1. supporting base; 2. upper mold; 3. lower mold; 4. U-shaped mounting frame; 5. hydraulic cylinder; 6. first ear plate; 7. second ear plate; 8. horizontal screw; 9. moving screw barrel; 10. U-shaped clamping block; 11. control motor; 12. vertical rotating shaft; 13. first bevel gear; 14. second bevel gear; 15. transmission sprocket; 16. transmission chain; 17. fixing block; 18. horizontal guide rod; 19. connecting seat; 20. connecting block; 21. fixing plug rod; 22. control pull block; 23. reset tension spring; 24. circulating pump; 25. positioning rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] refer to Figure 1-Figure 4 The injection mold of a plastic shell shown in the figure comprises a supporting base 1, an upper mold 2 and a lower mold 3. A U-shaped mounting frame 4 is fixedly installed on the top of the supporting base 1. Two hydraulic cylinders 5 are fixedly installed on the top inner wall of the U-shaped mounting frame 4. The upper mold 2 is fixedly installed on the output ends of the two hydraulic cylinders 5. The upper mold 2 is fixedly installed on the two sides away from each other. The second ear plates 7 are fixedly installed on the two sides away from each other of the lower mold 3. Horizontal screws 8 are rotatably installed on the inner walls of the two sides away from each other of the U-shaped mounting frame 4. Moving screw barrels 9 are threadedly sleeved on the two horizontal screws 8. Horizontal guide units are installed on both of them. The ends of the two moving screw barrels 9 close to each other can be detachably installed with U-shaped blocks 10. The U-shaped blocks 10 are adapted to the first ear plates 6 and the second ear plates 7. The U-shaped mounting frame 4 A control motor 11 is fixedly installed on the top through an L-shaped machine base, and a synchronous transmission unit for making the two horizontal screws 8 rotate synchronously is connected to the output end of the control motor 11, and the synchronous transmission unit includes two vertical rotating shafts 12. Two vertical rotating holes are opened on the top of the U-shaped mounting frame 4, and the two vertical rotating shafts 12 are respectively rotatably installed in the two vertical rotating holes. The output end of the control motor 11 is installed on the top of one of the vertical rotating shafts 12, and a transmission sprocket 15 is fixedly sleeved on the two vertical rotating shafts 12. A transmission chain 16 is commonly adapted on the two transmission sprockets 15. A first bevel gear 13 is fixedly installed on the bottom ends of the two vertical rotating shafts 12, and a second bevel gear 14 is fixedly sleeved on the two horizontal screws 8. The two first bevel gears 13 are respectively meshed with the two second bevel gears 14.

[0024] By means of the above structure, when the control motor 11 is started, one of the vertical rotating shafts 12 will be driven to rotate, and under the joint action of the transmission sprocket 15 and the transmission chain 16, the other vertical rotating shaft 12 will be driven to rotate together. The rotation of the vertical rotating shaft 12 will drive the horizontal screw 8 to rotate synchronously through the first bevel gear 13 and the second bevel gear 14. Under the cooperation of the horizontal guide unit, the rotation of the horizontal screw 8 will drive the U-shaped clamping block 10 to move horizontally through the moving screw barrel 9. When the U-shaped clamping block 10 is clamped on the first ear plate 6 and the second ear plate 7, the upper mold 2 and the lower mold 3 can be fixed together, so that during the injection molding process, the situation that the mold is accidentally opened automatically and affects the product quality can be effectively reduced. It is stable and reliable when used, and has good safety, simple structure, and easy to use.

[0025] In this embodiment, the horizontal guide unit includes a fixed block 17 fixedly mounted on the bottom of the moving screw barrel 9, a horizontal guide rod 18 is fixedly mounted on the side of the fixed block 17, a horizontal slide hole is opened on the side of the U-shaped mounting frame 4, and the horizontal guide rod 18 is slidably mounted in the horizontal slide hole. The advantage of this arrangement is that, through the coordinated arrangement of the fixed block 17, the horizontal guide rod 18 and the horizontal slide hole, the moving screw barrel 9 can only move horizontally, and will not rotate with the horizontal screw rod 8, which plays a role of horizontal guidance and has good stability during operation.

[0026] Example 2

[0027] refer to Figure 2 and Figure 4 As shown, a connection seat 19 is fixedly installed at the end of the movable screw barrel 9, a connection block 20 is slidably installed in the connection seat 19, and the connection block 20 is fixedly installed on the side of the U-shaped block 10. A plug rod sliding hole is provided at the top of the connection seat 19, and a fixed plug rod 21 is slidably installed in the plug rod sliding hole. A fixed plug hole is provided at the top of the connection block 20, and the bottom end of the fixed plug rod 21 extends into the fixed plug hole, and a control pull block 22 is fixedly installed at the top of the fixed plug rod 21. The advantage of this arrangement is that when the control pull block 22 is moved up and down, the fixed plug rod 21 will be driven to move in or out of the fixed plug hole, and then the connection block 20 can be fixed or loosened, thereby achieving the purpose of facilitating the disassembly and replacement of the U-shaped block 10, and further improving the practicality of the device.

[0028] In this embodiment, a reset spring 23 is sleeved on the fixed plug rod 21, and the two ends of the reset spring 23 are respectively fixedly mounted on the top of the connecting seat 19 and the bottom of the control pull block 22. The advantage of this arrangement is that when the control pull block 22 is released, the elastic force of the reset spring 23 will pull the control pull block 22 to automatically reset, and then the fixed plug rod 21 can be automatically inserted into the fixed plug hole, and the connecting block 20 and the U-shaped block 10 can be automatically fixed, and the fixed state can be maintained all the time, which is stable and reliable.

[0029] Example 3

[0030] refer to Figure 3 As shown, a cooling cavity is provided in the lower mold 3, a water storage cavity is provided in the supporting base 1, a circulating pump 24 is fixedly provided on the inner wall at the bottom of the water storage cavity, a first water pipe connected to the cooling cavity is fixedly installed at the water outlet of the circulating pump 24, a second water pipe connected to the cooling cavity is fixedly provided at the bottom of the lower mold 3, and the bottom end of the second water pipe extends into the water storage cavity. The advantage of such a setting is that when the circulating pump 24 is started, the cold water in the water storage cavity can be injected into the cooling cavity through the first water pipe, the material in the lower mold 3 is cooled, and the time taken for the material to be formed can be effectively reduced.

[0031] refer to Figure 4 As shown, a plurality of positioning rods 25 are evenly fixedly installed at the bottom of the upper mold 2, and a plurality of positioning holes are evenly opened at the top of the lower mold 3, and the plurality of positioning rods 25 are respectively slidably installed in the plurality of positioning holes. The advantage of such a setting is that the upper mold 2 and the lower mold 3 can be precisely molded by the matching setting of the positioning rods 25 and the positioning holes.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold for a plastic housing, comprising a supporting base (1), an upper mold (2) and a lower mold (3), characterized in that: A U-shaped mounting frame (4) is fixedly mounted on the top of the supporting base (1), two hydraulic cylinders (5) are fixedly mounted on the top inner wall of the U-shaped mounting frame (4), the upper mold (2) is fixedly mounted on the output ends of the two hydraulic cylinders (5), the upper mold (2) is fixedly mounted with first ear plates (6) on both sides away from each other, the lower mold (3) is fixedly mounted with second ear plates (7) on both sides away from each other, horizontal screws (8) are rotatably mounted on the inner walls of the two sides away from each other, and the two horizontal screws (8) are fixedly mounted on the inner walls of the two sides away from each other. A movable screw barrel (9) is threadedly sleeved on each of the screw rods (8), and a horizontal guide unit is installed on each of the two screw rods. The ends of the two movable screw barrels (9) close to each other can be detachably installed with a U-shaped clamping block (10), and the U-shaped clamping block (10) is compatible with the first ear plate (6) and the second ear plate (7). A control motor (11) is fixedly installed on the top of the U-shaped mounting frame (4) through an L-shaped machine base, and a synchronous transmission unit for making the two horizontal screw rods (8) rotate synchronously is connected to the output end of the control motor (11).

2. The injection mold of a plastic housing according to claim 1, characterized in that: The synchronous transmission unit comprises two vertical rotating shafts (12), the top of the U-shaped mounting frame (4) is provided with two vertical rotating holes, the two vertical rotating shafts (12) are respectively rotatably mounted in the two vertical rotating holes, the output end of the control motor (11) is mounted on the top of one of the vertical rotating shafts (12), a transmission sprocket (15) is fixedly sleeved on the two vertical rotating shafts (12), a transmission chain (16) is commonly adapted and arranged on the two transmission sprockets (15), a first bevel gear (13) is fixedly mounted on the bottom ends of the two vertical rotating shafts (12), a second bevel gear (14) is fixedly sleeved on the two horizontal screw rods (8), and the two first bevel gears (13) are respectively meshed with the two second bevel gears (14).

3. The injection mold of a plastic housing according to claim 1, characterized in that: The horizontal guide unit comprises a fixed block (17) fixedly mounted on the bottom of the movable screw barrel (9), a horizontal guide rod (18) fixedly mounted on the side of the fixed block (17), a horizontal sliding hole opened on the side of the U-shaped mounting frame (4), and the horizontal guide rod (18) slidably mounted in the horizontal sliding hole.

4. The injection mold of a plastic housing according to claim 1, characterized in that: A connecting seat (19) is fixedly installed at the end of the movable screw barrel (9), a connecting block (20) is slidably installed in the connecting seat (19), the connecting block (20) is fixedly installed on the side of the U-shaped block (10), a rod sliding hole is opened at the top of the connecting seat (19), a fixed rod (21) is slidably installed in the rod sliding hole, a fixed plug hole is opened at the top of the connecting block (20), the bottom end of the fixed plug rod (21) extends into the fixed plug hole, and a control pull block (22) is fixedly installed at the top of the fixed plug rod (21).

5. The injection mold of a plastic housing according to claim 4, characterized in that: The fixed plug rod (21) is sleeved with a reset spring (23), and the two ends of the reset spring (23) are respectively fixedly mounted on the top of the connecting seat (19) and the bottom of the control pull block (22).

6. The injection mold of a plastic housing according to claim 1, characterized in that: A cooling chamber is provided in the lower mold (3), a water storage chamber is provided in the supporting base (1), a circulating pump (24) is fixedly provided on the inner wall of the bottom of the water storage chamber, a first water pipe connected to the cooling chamber is fixedly installed at the water outlet of the circulating pump (24), and a second water pipe connected to the cooling chamber is fixedly provided at the bottom of the lower mold (3), and the bottom end of the second water pipe extends into the water storage chamber.

7. The injection mold of a plastic housing according to claim 1, characterized in that: A plurality of positioning rods (25) are evenly fixedly installed on the bottom of the upper mold (2), and a plurality of positioning holes are evenly opened on the top of the lower mold (3), and the plurality of positioning rods (25) are respectively slidably installed in the plurality of positioning holes.

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