Threaded part injection mold capable of achieving automatic demolding

Abstract

The utility model discloses a threaded part injection mold capable of automatically demolding, which comprises an upper mold mechanism, a lower mold mechanism and a threaded demolding mechanism, the upper mold mechanism comprises a first outer mold assembly and a first mold core, and the lower mold mechanism comprises a second outer mold assembly and a second mold core; the first mold core and the second mold core are matched to form a threaded part injection molding cavity; the threaded demolding mechanism comprises a driving assembly and at least one threaded rod, the at least one threaded rod is arranged in the first outer mold assembly, and the threaded end of the threaded rod penetrates through the first mold core and extends into the injection molding cavity; the driving assembly can drive the threaded rod to rotate in the injection molding cavity; the threaded rod extends into the injection molding cavity and can generate threads on an injection molding part, the driving part drives the threaded rod to rotate, and when the upper mold mechanism and the lower mold mechanism are separated, the threaded rod and the injection molding part can be automatically separated.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an automatic demoulding screw part injection mold. Background Art

[0002] An injection mold is a mold used to produce plastic products. It mainly injects molten plastic material into the cavity of the mold, solidifies the plastic through pressurization and cooling, and thus forms a product with a specific shape. Injection molds are one of the core equipment for manufacturing plastic products, and their quality and performance have a direct impact on production efficiency and product quality. At present, injection molds are one of the main tools for manufacturing plastic products. When existing injection molds are used to process products with threads, especially products with internal threads, they often require manual secondary processing of the injection molded products. Removing the corresponding mold parts from the product will increase the production process and increase costs. Utility Model Content

[0003] In view of this, the utility model discloses a screw component injection mold capable of automatic demoulding, which can realize demoulding of the screw component when the mold is opened.

[0004] The utility model discloses an injection mold for a threaded part capable of automatic demoulding, comprising an upper mold mechanism, a lower mold mechanism and a threaded demoulding mechanism, wherein:

[0005] The upper mold mechanism comprises a first outer mold assembly and a first mold core, wherein the first mold core is fixed inside the first outer mold assembly;

[0006] The lower mold mechanism comprises a second outer mold assembly and a second mold core, wherein the second mold core is fixed inside the second outer mold assembly; the first mold core and the second mold core cooperate to form a screw injection cavity;

[0007] The threaded demolding mechanism includes a driving assembly and at least one threaded rod, at least one of the threaded rods is arranged inside the first outer mold assembly and the threaded end of the threaded rod passes through the first mold core and extends into the injection cavity; the driving assembly can drive the threaded rod to rotate in the injection cavity.

[0008] Furthermore, the first mold core is fixed inside the first outer mold assembly and has an opening toward the lower mold mechanism, and the second mold core is fixed inside the second outer mold assembly and has an opening toward the upper mold mechanism. When the upper mold mechanism and the lower mold mechanism are fitted together, the opening of the first mold core and the opening of the second mold core can be fitted together to form the injection cavity.

[0009] Furthermore, at least two guide shafts are provided on the first outer mold assembly, and guide holes corresponding to the guide shafts are provided on the second outer mold assembly, and one end of the guide shaft extends into the guide hole and can slide relative to the guide hole.

[0010] Furthermore, the threaded rod is rotatably connected to the first outer mold assembly via a bearing, the first end of the threaded rod passes through the first mold core via a through hole, and the second end of the threaded rod is connected to the driving assembly, and the driving assembly can drive the threaded rod to rotate relative to the first outer mold assembly.

[0011] Furthermore, a stopper is provided inside the second mold core, and the first end of the threaded rod extends into the injection cavity and abuts against the stopper.

[0012] Furthermore, the driving assembly includes a driving motor, a transmission structure, a first transmission gear and a second transmission gear. The driving motor is fixed to one side of the first outer mold assembly through a first connecting plate, the first transmission gear is arranged on the inner side of the first outer mold assembly, the second transmission gear is fixed to the second end of the threaded rod, the first transmission gear and the second transmission gear are meshed, the driving motor can drive the first transmission gear to rotate through the transmission structure, and the first transmission gear can drive the threaded rod to rotate through the second transmission gear.

[0013] Furthermore, there are four threaded rods, and the second ends of the four threaded rods are respectively connected to the second transmission gears. The four second transmission gears are evenly distributed on the circumference of the first transmission gear, and the first transmission gear can drive the four second transmission gears to rotate simultaneously.

[0014] Furthermore, the transmission structure includes a first pulley, a second pulley and a transmission shaft, the transmission shaft is rotatably arranged above the first outer mold assembly through a second connecting plate, the first transmission gear is connected to the bottom end of the transmission shaft, the second pulley is arranged at the top end of the transmission shaft, the first pulley is fixed to the output shaft of the drive motor, and the first pulley and the second pulley are connected by a rotating belt.

[0015] Furthermore, a cover plate is provided on one side of the second connecting plate, and the cover plate cooperates with the second connecting plate to form a driving groove, and the second pulley is arranged in the driving groove; the top end of the transmission shaft is rotatably connected to the cover plate through a bearing.

[0016] Furthermore, the second outer mold component is provided with an injection port, the second mold core is provided with a flow channel, and the injection port is connected with the injection cavity through the flow channel.

[0017] Compared with the prior art, the technical solution disclosed in the utility model has the following beneficial effects:

[0018] The threaded rod extends into the injection cavity to generate threads on the injection molded part. The driving member drives the threaded rod to rotate, and when the upper mold mechanism and the lower mold mechanism are separated, the threaded rod can be automatically separated from the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a screw part injection mold;

[0020] Figure 2 This is an exploded view of the injection mold for threaded parts;

[0021] Figure 3 It is a schematic diagram of the structure of the first mold core and the second mold core;

[0022] Figure 4 A cross-sectional view of the first mold core and the second mold core when they are matched;

[0023] Figure 5 It is a structural schematic diagram of the thread demoulding mechanism. DETAILED DESCRIPTION

[0024] 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. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be a central component at the same time. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those generally understood by technicians in the technical field of the utility model. It should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0025] It should also be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1 and Figure 2 As shown, the utility model discloses an automatic demoulding threaded part injection mold 100, comprising an upper mold mechanism 10, a lower mold mechanism 20 and a thread demoulding mechanism 30, wherein the upper mold mechanism 10 and the lower mold mechanism 20 are arranged relatively to each other, and the upper mold mechanism 10 and the lower mold mechanism 20 cooperate to assist in the injection molding of the injection molded part, and the thread demoulding mechanism 30 is used to form threads on the injection molded part and can be automatically separated from the injection molded part.

[0027] like Figures 1 to 4 As shown, the upper mold mechanism 10 includes a first outer mold assembly 11 and a first mold core 12, and the first mold core 12 is fixed inside the first outer mold assembly 11; the lower mold mechanism 20 includes a second outer mold assembly 21 and a second mold core 22, and the second mold core 22 is fixed inside the second outer mold assembly 21; the first mold core 12 and the second mold core 22 cooperate to form a screw injection cavity 23. During injection molding, the upper mold mechanism 10 and the lower mold mechanism 20 fit together, so that the first mold core 12 and the second mold core 22 abut against each other to form the injection cavity 23, and at this time, molten consumables are poured into the injection cavity 23 to form an injection molded part in the injection cavity 23.

[0028] Furthermore, the second outer mold assembly 21 is provided with an injection port 25, the second mold core 22 is provided with a flow channel 26, and the injection port 25 is connected with the injection cavity 23 through the flow channel 26. The upper mold mechanism 10 and the lower mold mechanism 20 are installed on an injection molding machine, and the injection molding machine is provided with a glue injection device, and the glue injection device can inject molten consumables into the injection cavity 23 through the injection port 25.

[0029] Furthermore, the first mold core 12 is fixed inside the first outer mold assembly 11 and has an opening toward the lower mold mechanism 20, and the second mold core 22 is fixed inside the second outer mold assembly 21 and has an opening toward the upper mold mechanism 10. When the upper mold mechanism 10 and the lower mold mechanism 20 are fitted together, the opening of the first mold core 12 and the opening of the second mold core 22 can be fitted together to form the injection cavity 23.

[0030] Combination Figure 1 , Figure 2 See also Figure 5 Further, the threaded demoulding mechanism 30 includes a driving assembly and at least one threaded rod 32, at least one threaded rod 32 is arranged inside the first outer mold assembly 11 and the threaded end of the threaded rod 32 passes through the first mold core 12 and extends into the injection cavity 23; the driving assembly can drive the threaded rod 32 to rotate in the injection cavity 23. In the present application, the threaded portion of the threaded rod 32 is in the injection cavity 23, and when the molten consumable forms an injection molded part in the injection cavity 23, the thread is formed under the cooperation of the threaded rod 32. When the driving assembly drives the threaded rod 32 to rotate and the upper mold mechanism 10 and the lower mold mechanism 20 are separated at a preset speed, the threaded rod 32 can be separated from the formed injection molded part.

[0031] like Figure 2 As shown, at least two guide shafts 111 are provided on the first outer mold assembly 11, and guide holes 211 corresponding to the guide shafts 111 are provided on the second outer mold assembly 21, and one end of the guide shaft 111 extends into the guide hole 211 and can slide relative to the guide hole 211. In the present application, the guide shaft 111 cooperates with the guide hole 211 to ensure smooth relative movement of the upper mold mechanism 10 and the lower mold mechanism 20.

[0032] Furthermore, the threaded rod 32 is rotatably connected to the first outer mold assembly 11 through a bearing, the first end of the threaded rod 32 passes through the first mold core 12 through a through hole, and the second end of the threaded rod 32 is connected to the driving assembly, and the driving assembly can drive the threaded rod 32 to rotate relative to the first outer mold assembly 11. A stopper 24 is provided inside the second mold core 12, and the first end of the threaded rod 32 extends into the injection cavity 23 and abuts against the stopper 24. When producing injection molded parts, the threaded end of the threaded rod 32 extends into the injection cavity 23 and abuts against the stopper 24, and the driving assembly can drive the threaded rod 32 to rotate relative to the injection cavity 23.

[0033] Further, the driving assembly includes a driving motor 31, a transmission structure, a first transmission gear 34 and a second transmission gear 35. The driving motor 31 is fixed to one side of the first outer mold assembly 11 through a first connecting plate 41. The first transmission gear 34 is arranged on the inner side of the first outer mold assembly 11. The second transmission gear 35 is fixed to the second end of the threaded rod 32. The first transmission gear 34 and the second transmission gear 35 are meshed. The driving motor 31 can drive the first transmission gear 34 to rotate through the transmission structure. The first transmission gear 34 can drive the threaded rod 32 to rotate through the second transmission gear 35. There are four threaded rods 32. The second ends of the four threaded rods 32 are respectively connected to the second transmission gears 35. The four second transmission gears 35 are evenly distributed around the first transmission gear 34. The first transmission gear 34 can drive the four second transmission gears 35 to rotate simultaneously. Specifically, there are four injection cavities 23, and the injection port 25 is connected to the four injection cavities 23 through flow channels. Each injection cavity 23 corresponds to one threaded rod 32, and the driving motor 31 can drive the four threaded rods 32 to rotate simultaneously to ensure the uniformity of the four threaded rods 32 during demolding.

[0034] Furthermore, the transmission structure includes a first pulley 36, a second pulley 37 and a transmission shaft 33, the transmission shaft 33 is rotatably arranged above the first outer mold assembly 11 through a second connecting plate 42, the first transmission gear 34 is connected to the bottom end of the transmission shaft 33, the second pulley 37 is arranged at the top end of the transmission shaft 33, the first pulley 36 is fixed to the output shaft of the drive motor 31, and the first pulley 36 and the second pulley 37 are connected by a rotating belt 38.

[0035] A cover plate 43 is provided on one side of the second connecting plate 42. The cover plate 43 cooperates with the second connecting plate 42 to form a driving groove 44. The second pulley 37 is disposed in the driving groove 44. The top end of the transmission shaft 33 is rotatably connected to the cover plate 43 via a bearing.

[0036] The present invention can be implemented in various ways and modified without departing from the broad spirit and scope of the present invention. The above-mentioned embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.

Claims

1. A screw part injection mold with automatic demoulding, characterized in that: It includes an upper mold mechanism, a lower mold mechanism and a thread demoulding mechanism, wherein: The upper mold mechanism comprises a first outer mold assembly and a first mold core, wherein the first mold core is fixed inside the first outer mold assembly; The lower mold mechanism comprises a second outer mold assembly and a second mold core, wherein the second mold core is fixed inside the second outer mold assembly; the first mold core and the second mold core cooperate to form a screw injection cavity; The threaded demolding mechanism includes a driving assembly and at least one threaded rod, at least one of the threaded rods is arranged inside the first outer mold assembly and the threaded end of the threaded rod passes through the first mold core and extends into the injection cavity; the driving assembly can drive the threaded rod to rotate in the injection cavity.

2. The automatic demoulding screw injection mold according to claim 1, characterized in that: The first mold core is fixed inside the first outer mold assembly and has an opening toward the lower mold mechanism, the second mold core is fixed inside the second outer mold assembly and has an opening toward the upper mold mechanism, and when the upper mold mechanism and the lower mold mechanism are fitted together, the opening of the first mold core and the opening of the second mold core can fit together to form the injection cavity.

3. The automatic demoulding screw injection mold according to claim 2, characterized in that: The first outer mold component is provided with at least two guide shafts, and the second outer mold component is provided with guide holes corresponding to the guide shafts one by one, and one end of the guide shaft extends into the guide hole and can slide relative to the guide hole.

4. The automatic demoulding screw injection mold according to claim 1, characterized in that: The threaded rod is rotatably connected to the first outer mold assembly via a bearing, the first end of the threaded rod passes through the first mold core via a through hole, and the second end of the threaded rod is connected to the driving assembly, and the driving assembly can drive the threaded rod to rotate relative to the first outer mold assembly.

5. The automatic demoulding screw injection mold according to claim 4, characterized in that: A stopper is disposed inside the second mold core, and the first end of the threaded rod extends into the injection cavity and abuts against the stopper.

6. The automatic demoulding screw injection mold according to claim 5, characterized in that: The driving assembly includes a driving motor, a transmission structure, a first transmission gear and a second transmission gear. The driving motor is fixed to one side of the first outer mold assembly through a first connecting plate. The first transmission gear is arranged on the inner side of the first outer mold assembly. The second transmission gear is fixed to the second end of the threaded rod. The first transmission gear and the second transmission gear are meshed. The driving motor can drive the first transmission gear to rotate through the transmission structure, and the first transmission gear can drive the threaded rod to rotate through the second transmission gear.

7. The automatic demoulding screw injection mold according to claim 6, characterized in that: There are four threaded rods, and the second ends of the four threaded rods are respectively connected to the second transmission gears. The four second transmission gears are evenly distributed on the circumference of the first transmission gear, and the first transmission gear can drive the four second transmission gears to rotate simultaneously.

8. The automatic demoulding screw injection mold according to claim 7, characterized in that: The transmission structure includes a first pulley, a second pulley and a transmission shaft. The transmission shaft is rotatably arranged above the first outer mold assembly through a second connecting plate. The first transmission gear is connected to the bottom end of the transmission shaft. The second pulley is arranged at the top end of the transmission shaft. The first pulley is fixed to the output shaft of the driving motor. The first pulley and the second pulley are connected by a rotating belt.

9. The automatic demoulding screw part injection mold according to claim 8, characterized in that: A cover plate is provided on one side of the second connecting plate, and the cover plate cooperates with the second connecting plate to form a driving groove, and the second pulley is arranged in the driving groove; the top end of the transmission shaft is rotatably connected to the cover plate through a bearing.

10. The automatic demoulding screw injection mold according to claim 1, characterized in that: The second outer mold component is provided with an injection port, the second mold core is provided with a flow channel, and the injection port is communicated with the injection cavity through the flow channel.

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