Rotary core-pulling automatic demolding mechanism

Abstract

The utility model discloses a rotary core-pulling automatic demolding mechanism which comprises a movable mold, a driving assembly is arranged in the movable mold, a rotating shaft is arranged at the top of the movable mold through the driving assembly, a protective shell is fixedly arranged at the top of the movable mold, and a threaded mold core is fixedly arranged at the bottom end of the rotating shaft. And the threaded mold core is rotationally connected with the protective shell. The driving assembly drives the rotating shaft to rotate, the rotating shaft drives the threaded mold core to rotate, and meanwhile the rotating shaft drives the lifting assembly to drive the pushing frame to move upwards, so that the pushing frame gives axial thrust to an injection molding workpiece, and when the workpiece is screwed out of the surface of the threaded mold core, proper thrust is given to the workpiece; and the demolding speed of the thread mold core of the workpiece is increased, so that the situation that the screwing-out time is long due to the fact that the size of the internal thread of the workpiece is large and the thread pitch is dense is avoided, and the situation that the number of products produced within the same time is reduced and the whole production cycle is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotating core-pulling automatic demolding technical field especially relates to a rotating core-pulling automatic demolding mechanism. BACKGROUND

[0002] Rotating core-pulling automatic demolding mechanism is a kind of device for injection mold or die casting mold etc. forming process, mainly for the molding of the plastic parts or castings with inside concave or inside convex features, by rotating movement the type that hinders the plastic parts or castings demolding is extracted from the molding parts, for example, in the molding process of a plastic product with internal spiral structure, rotating core-pulling mechanism can rotate around the central axis, and the spiral core is rotated out from the molded plastic product, so as to facilitate the demolding of the workpiece with internal thread.

[0003] But rotating core-pulling automatic demolding mechanism uses in the process, the internal thread automatic rotation demolding mechanism for some internal thread size larger, pitch denser product, make the product spin out thread type core needs longer time, lead to the same time the number of products produced decreases, thereby affecting the entire production cycle, based on the above problems, the application proposes a kind of rotating core-pulling automatic demolding mechanism. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model provides a rotating core-pulling automatic demolding mechanism to solve the problems in the background art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of rotating core-pulling automatic demolding mechanism, including movable mould, the movable mould is internally provided with driving assembly, the movable mould top is provided with rotating shaft by driving assembly, the movable mould top is fixedly provided with protective shell, the rotating shaft bottom end is fixedly provided with thread die core, the thread die core is rotationally connected with protective shell, the protective shell is internally provided with lifting assembly, the protective shell is internally provided with push frame by lifting assembly, the push frame is slidably connected with protective shell, the protective shell is internally provided with detection assembly.

[0007] Preferably, the driving assembly includes driving motor fixedly installed at the bottom of movable mould, the output end of the driving motor is fixedly provided with driving gear, the driving gear surface is engaged with driven gear, and the rotating shaft is fixedly installed in the interior of driven gear.

[0008] Preferably, the lifting assembly comprises a rotating gear fixedly installed on the surface of the rotating shaft, the surface of the rotating gear is engaged with a connecting gear, an internally threaded pipe is fixedly arranged in the connecting gear, a mounting plate is rotatably arranged on the surface of the internally threaded pipe, the mounting plate is fixedly installed in the interior of the protective shell, a screw is threadedly arranged in the internally threaded pipe, a limiting groove is formed in the surface of the screw, a limiting rod is lap-jointed in the limiting groove, a connecting plate is fixedly arranged at the end of the limiting rod, the connecting plate is fixedly installed on the top of the mounting plate, and a moving plate is fixedly arranged at the top end of the screw.

[0009] Preferably, the detection assembly comprises a mounting frame fixedly installed on the lateral wall of the upper side of the protective shell, a detection rod is slidably arranged in the mounting frame, a circular plate is fixedly arranged on the surface of the detection rod, springs are connected between the bottom of the circular plate and the lower lateral wall of the mounting frame, and a pressure sensor is arranged below the detection rod and fixedly installed on the top of the movable mold.

[0010] Preferably, the number of the driven gears is four, the four driven gears are circularly arranged, the radius of the driven gears is smaller than that of the driving gear, and the driving gear and the driven gears are both made of metal.

[0011] Preferably, the pushing frame is composed of a circular ring and an arc-shaped plate, the arc-shaped plate is slidably arranged on the surface of the threaded mold core, and the pushing frame is made of metal.

[0012] Preferably, the limiting rod is circular in shape, and the diameter of the limiting rod is the same as the length of the limiting groove.

[0013] Preferably, four guide rods are fixedly arranged on the top of the protective shell.

[0014] Compared with the prior art, the rotating core automatic demolding mechanism has the advantages that: the rotating shaft is driven to rotate by the driving assembly, the threaded mold core is driven to rotate by the rotating shaft, the pushing frame is driven to move upward by the rotating shaft and the lifting assembly, the pushing frame gives an axial thrust to the injection-molded workpiece, an appropriate thrust is given to the workpiece when the workpiece is rotated out of the surface of the threaded mold core, the speed of demolding the threaded mold core in the workpiece is accelerated, the large size and the dense pitch of the internal thread of the workpiece do not lead to a long time for rotation, the number of products produced in the same time is not reduced, and the whole production cycle is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure of the utility model is shown in the figure;

[0016] Figure 2 The internal structure of the protective shell of the utility model is shown in the figure;

[0017] Figure 3 It is a partial structure schematic view of the utility model;

[0018] Figure 4 It is a lifting assembly structure schematic view of the utility model;

[0019] Figure 5 It is a detection assembly structure schematic view of the utility model.

[0020] In the figure: 1, movable die; 2, guide rod; 3, drive motor; 4, drive gear; 5, driven gear; 6, rotating shaft; 7, threaded mold core; 8, rotating gear; 9, connecting gear; 10, internally threaded tube; 11, mounting plate; 12, screw; 13, limiting groove; 14, limiting rod; 15, connecting plate; 16, moving plate; 17, push frame; 18, mounting frame; 19, detection rod; 20, round plate; 21, spring; 22, pressure sensor; 23, protective housing. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Refer to Figures 1-5A rotating core automatic demolding mechanism, comprising a movable mold 1, a driving assembly is arranged inside the movable mold 1, a rotating shaft 6 is arranged on the top of the movable mold 1 through the driving assembly, a protective shell 23 is fixedly arranged on the top of the movable mold 1, a guide rod 2 is fixedly arranged on the top of the protective shell 23, the number of the guide rod 2 is four, through the guide rod 2, when the movable mold 1 and the static mold are closed, deviation of the static mold and the movable mold 1 when the mold is closed is avoided, a threaded mold core 7 is fixedly arranged at the bottom end of the rotating shaft 6, the threaded mold core 7 is rotationally connected with the protective shell 23, a lifting assembly is arranged inside the protective shell 23, a pushing frame 17 is arranged inside the protective shell 23 through the lifting assembly, the lifting assembly comprises a rotating gear 8 fixedly installed on the surface of the rotating shaft 6, a connecting gear 9 is meshingly arranged on the surface of the rotating gear 8, an internal threaded tube 10 is fixedly arranged inside the connecting gear 9, an installation plate 11 is rotationally arranged on the surface of the internal threaded tube 10, the installation plate 11 is fixedly installed inside the protective shell 23, a screw rod 12 is threadedly arranged inside the internal threaded tube 10, a limiting groove 13 is formed in the surface of the screw rod 12, a limiting rod 14 is lap-jointedly arranged inside the limiting groove 13, the limiting rod 14 is in a circular shape structure, the diameter of the limiting rod 14 is same with the length of the limiting groove 13, so as to conveniently limit the screw rod 12 through the limiting rod 14 and the limiting groove 13, and the screw rod 12 is avoided from rotating with the internal threaded tube 10, a connecting plate 15 is fixedly arranged at the end of the limiting rod 14, the connecting plate 15 is fixedly installed on the top of the installation plate 11, a moving plate 16 is fixedly arranged at the top end of the screw rod 12, the moving plate 16 is fixedly installed on the surface of the pushing frame 17, at the same time, the rotating shaft 6 drives the connecting gear 9 to rotate through the rotating gear 8, so that the internal threaded tube 10 rotates inside the installation plate 11, and the screw rod 12 is limited through the limiting groove 13 and the limiting rod 14, so that the screw rod 12 drives the pushing frame 17 to exert an axial force on the workpiece through the moving plate 16, thereby accelerating the demolding speed of the workpiece from the surface of the threaded mold core 7, the pushing frame 17 is composed of a circular ring and an arc-shaped plate, the arc-shaped plate is slidingly arranged on the surface of the threaded mold core 7, the pushing frame 17 is made of metal material, a plurality of arc-shaped plates are synchronously moved through the circular ring, so that the plurality of arc-shaped plates simultaneously exert an axial force on the workpiece, thereby making the exerted axial force more uniform, avoiding damage of internal threads of the workpiece caused by uneven force, the pushing frame 17 is slidingly connected with the protective shell 23, and a detection assembly is arranged inside the protective shell 23.

[0023] Specific, the driving assembly comprises a driving motor 3 fixedly installed at the bottom of the movable mold 1, the output end of the driving motor 3 is fixedly provided with a driving gear 4, the surface of the driving gear 4 is engaged with a driven gear 5, the number of the driven gear 5 is four, and the four driven gears 5 are distributed in a circular array, the radius of the driven gear 5 is smaller than that of the driving gear 4, the driving gear 4 and the driven gear 5 are both made of metal material, a rotating shaft 6 is fixedly installed in the interior of the driven gear 5, the driving motor 3 drives the driven gear 5 to rotate through the driving gear 4, so that the rotating shaft 6 is driven to rotate by the driven gear 5, thereby facilitating the rotation of the threaded mold core 7, and facilitating the workpiece to be rotated out of the threaded mold core 7.

[0024] Specific, the detection assembly comprises a mounting bracket 18 fixedly installed on the side wall of the protection shell 23, a detection rod 19 is slidably arranged in the mounting bracket 18, a circular plate 20 is fixedly arranged on the surface of the detection rod 19, a spring 21 is connected between the bottom of the circular plate 20 and the lower side wall of the mounting bracket 18, a pressure sensor 22 is arranged below the detection rod 19, and the pressure sensor 22 is fixedly installed on the top of the movable mold 1; when the movable mold 1 is combined with the static mold, the static mold drives the detection rod 19 to move downwards, so that the detection rod 19 drives the threaded rod 12 to compress the spring 21, and the detection rod 19 applies pressure to the detection end of the pressure sensor 22; when the detection end of the pressure sensor 22 is subjected to pressure conversion, the movable mold 1 is combined with the static mold, at this time, the detection rod 19 is retracted into the protection shell 23, and the top end of the detection rod 19 is horizontally aligned with the top of the protection shell 23, so that no gap is generated after the movable mold 1 is combined with the static mold.

[0025] The rotating core automatic demolding mechanism is connected with 220V mains, and the main control device can be a conventional known device such as a computer.

[0026] In use: when the workpiece is completed after injection molding, the driving motor 3 drives the output end to drive the driving gear 4 to rotate, the driving gear 4 drives the driven gear 5 engaged therewith to rotate, and the rotating shaft 6 is driven to rotate by the driven gear 5, so that the rotating shaft 6 drives the threaded mold core 7 to rotate, and the rotating shaft 6 drives the rotating gear 8 to rotate, the connecting gear 9 engaged with the rotating gear 8 is driven to rotate by the rotating gear 8, the inner threaded tube 10 is driven to rotate in the installation plate 11 by the connecting gear 9, the screw rod 12 is limited by the limiting groove 13 and the limiting rod 14, the screw rod 12 moves upwards, the moving plate 16 moves upwards driven by the screw rod 12, the moving plate 16 drives the pushing bracket 17 to move upwards, the pushing bracket 17 applies an axial force to the workpiece, and the workpiece is moved out of the surface of the threaded mold core 7.

[0027] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A rotating core-pulling automatic demolding mechanism comprising a moving mold (1), characterized in that, The movable die (1) is internally provided with a driving assembly, the movable die (1) top is provided with a rotating shaft (6) through the driving assembly, the movable die (1) top is fixedly provided with a protective shell (23), the rotating shaft (6) bottom end is fixedly provided with a threaded mold core (7), the threaded mold core (7) is rotatably connected with the protective shell (23), the protective shell (23) is internally provided with a lifting assembly, the protective shell (23) is internally provided with a push frame (17) through the lifting assembly, the push frame (17) is slidably connected with the protective shell (23), and the protective shell (23) is internally provided with a detection assembly.

2. A rotating core-pulling automatic demolding mechanism according to claim 1, characterized in that, The driving assembly comprises a driving motor (3) fixedly installed at the bottom of the movable die (1), the output end of the driving motor (3) is fixedly provided with a driving gear (4), the surface of the driving gear (4) is engaged with a driven gear (5), and the rotating shaft (6) is fixedly installed in the driven gear (5).

3. A rotating core-pulling automatic demolding mechanism according to claim 1, characterized in that, The lifting assembly comprises a rotating gear (8) fixedly installed on the surface of the rotating shaft (6), the surface of the rotating gear (8) is engaged with a connecting gear (9), the inside of the connecting gear (9) is fixedly provided with an internal threaded pipe (10), the surface of the internal threaded pipe (10) is rotatably provided with a mounting plate (11), the mounting plate (11) is fixedly installed in the inside of the protective shell (23), the inside of the internal threaded pipe (10) is threadedly provided with a screw rod (12), the surface of the screw rod (12) is provided with a limiting groove (13), the inside of the limiting groove (13) is lap jointedly provided with a limiting rod (14), the end of the limiting rod (14) is fixedly provided with a connecting plate (15), the connecting plate (15) is fixedly installed on the top of the mounting plate (11), and the top of the screw rod (12) is fixedly provided with a moving plate (16), the moving plate (16) is fixedly installed on the surface of the push frame (17).

4. A rotating core-pulling automatic demolding mechanism according to claim 1, characterized in that, The detection assembly comprises a mounting frame (18) fixedly installed on the upper side wall of the protective shell (23), a detection rod (19) is slidably arranged in the mounting frame (18), a circular plate (20) is fixedly arranged on the surface of the detection rod (19), a spring (21) is connected between the bottom of the circular plate (20) and the lower side wall of the mounting frame (18), a pressure sensor (22) is arranged below the detection rod (19), and the pressure sensor (22) is fixedly installed on the top of the movable die (1).

5. A rotating core-pulling automatic demolding mechanism according to claim 2, characterized in that, The number of the driven gears (5) is four, and the four driven gears (5) are circularly arrayed, the radius of the driven gear (5) is smaller than that of the driving gear (4), and the driving gear (4) and the driven gear (5) are both made of metal material.

6. A rotating core-pulling automatic demolding mechanism according to claim 1, characterized in that, The push frame (17) is composed of a circular ring and an arc-shaped plate, the arc-shaped plate is slidably arranged on the surface of the threaded mold core (7), and the push frame (17) is made of metal material.

7. A rotating core-pulling automatic demolding mechanism according to claim 3, characterized in that, The limiting rod (14) is in a circular shape, and the diameter of the limiting rod (14) is the same as the length of the limiting groove (13).

8. A rotating core-pulling automatic demolding mechanism according to claim 1, characterized in that, The top of the protective shell (23) is fixedly provided with four guide rods (2).

Images