Sectional type demolding mechanism

Abstract

The utility model relates to the technical field of demolding, in particular to a sectional type demolding mechanism which comprises a mold body, the mold body is provided with a demolding mechanism, the demolding mechanism comprises a motor, a first rotating rod and a second rotating rod, an output shaft of the motor and one end of the first rotating rod are fixedly sleeved with a first belt pulley, and the output shaft of the motor is fixedly sleeved with a second belt pulley. A first belt is in transmission connection between the two first belt wheels, the first rotating rod and the second rotating rod are fixedly sleeved with second belt wheels, the electric push rod is controlled to push the half core molds to ascend, the two third magnets are attracted to the first magnet and the second magnet which are adjacent, and therefore the two half core molds are made to slide and be separated on the inner wall of the cavity. According to the scheme, the mode that molding plastic can fall off only when the molding plastic slides for a certain distance through friction in a cavity during transmission ejector pin demolding is replaced, synchronous demolding is carried out on the two sides of the outer wall of the molding plastic, the molding plastic is loosened and falls off, the friction force and the demolding force during demolding of the molding plastic are reduced, and the quality of the molding plastic is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding, in particular to a segmented demoulding mechanism. Background Art

[0002] An injection mold is a tool for producing plastic products and also a tool for giving plastic products a complete structure and precise size.

[0003] According to the Chinese patent publication number CN218196615U, the patent provides a segmented demolding structure, including at least one segmented core mold and a base plate, and also includes a demolding mechanism; the core mold is installed on the base plate, and the core mold is used to form a cavity in a barrel body; the demolding mechanism is installed on the base plate and cooperates with the core mold. By sequentially separating the core mold from the side wall of the formed cavity in segments, the demolding area of ​​the core mold and the cavity during the demolding process can be reduced, thereby effectively reducing the demolding force on the barrel body when the core mold is demolded, so as to improve the demolding quality of the barrel body.

[0004] The modular structure of the segmented demoulding structure used in the above patent is complex, especially the repeated separation and merging of the mold will affect the durability of the mold joints, thereby accelerating the mold loss and reducing the service life of the mold. In view of this, we propose a segmented demoulding mechanism. Utility Model Content

[0005] The utility model aims to provide a segmented demoulding mechanism, which solves the problem that repeated separation and merging of molds will affect the durability of mold joints, thereby accelerating mold wear and reducing the service life of the mold.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A segmented demoulding mechanism comprises a mold body, on which a demoulding mechanism is arranged, wherein the demoulding mechanism comprises a motor and rotating rods 1 and 2, wherein the output shaft of the motor and one end of the rotating rod 1 are both fixedly sleeved with pulley 1, a belt 1 is connected between the two pulleys 1 for transmission, the rotating rod 1 and the rotating rod 2 are both fixedly sleeved with pulley 2, a belt 2 is connected between the two pulleys 2 for transmission, a magnet 1 is installed at one end of the rotating rod 1 away from the pulley 1 and the pulley 2, and a magnet 2 is installed at one end of the rotating rod 2 away from the pulley 1 and the pulley 2.

[0008] Preferably, an installation mechanism is provided on the mold body, and the installation mechanism includes a cavity, which is opened at the top of the mold body, and an inner groove is continued to be opened at the bottom of the inner wall of the cavity, and through holes are opened between the two sides of the inner wall of the cavity and the two sides of the outer wall of the mold body, and a rod hole is opened at the bottom of the inner wall of each through hole.

[0009] Preferably, the rotating rod 1 and the rotating rod 2 are movable through the two rod holes respectively, and are rotatably connected to the bottom of the inner walls of the two rod holes respectively through bearings, and the magnet 1 and the magnet 2 are respectively located inside the two through holes.

[0010] Preferably, a support foot is installed at the bottom of the mold body, a bottom plate is installed on the support foot, a frame is installed on one side of the bottom plate, and the motor is installed inside the frame.

[0011] Preferably, the ejection mechanism includes a mounting plate, which is mounted on the bottom of the mold body, a plate hole is provided at the bottom of the inner wall of the inner groove, an electric push rod is provided on the inner wall of the plate hole, the electric push rod is mounted on the top of the mounting plate, a slide plate is installed on the inner rod of the electric push rod, the slide plate is slidably connected to the inner wall of the plate hole, two sliding grooves are provided on the top of the slide plate, the inner walls of the two sliding grooves are slidably connected with sliders, the tops of the two sliders are fixedly connected with half core molds, the two half core molds are symmetrically arranged and fit each other, and magnets are installed on the outer arc surfaces of the two half core molds.

[0012] Preferably, the magnet one and the adjacent magnet three are attracted to each other with opposite polarities, and the magnet two and the adjacent magnet three are attracted to each other with opposite polarities.

[0013] Preferably, the two half core molds are both fitted to the inner wall of the inner groove and slidably connected to the inner wall of the cavity, and the sides of the magnet 1 and the magnet 2 that are close to each other repel each other with the same polarity.

[0014] By means of the above technical solution, the utility model provides a segmented demoulding mechanism, which has at least the following beneficial effects:

[0015] (1) The utility model controls the electric push rod to push the half core mold to rise, and the two magnets three are adsorbed with the adjacent magnets one and two, so that the two half core molds are caused to slide and separate on the inner wall of the cavity. This replaces the method in which the molded plastic needs to slide for a certain distance in the cavity before falling when the transmission ejector is demolded. In this case, the mold is demolded synchronously on both sides of the outer wall of the molded plastic, so that the molded plastic loosens and falls, reducing the friction and demolding force of the molded plastic when demolding, thereby improving the quality of the molded plastic.

[0016] (2) The utility model starts the motor to rotate belt 1 synchronously with the motor output shaft and rotating rod 1, and belt 2 rotates synchronously with rotating rod 1 and rotating rod 2, which synchronously drives magnet 1 and magnet 2 to flip 180 degrees, thereby converting the suction force of magnet 3 into repulsion, pushing the two half core molds closer to each other and reassembling them. The present invention has a simple structure and a small amount of modular structure. Compared with the existing technology of combining a large number of modules to achieve segmented demolding, the present invention is not only automated and convenient in operation, but also reduces the wear of a large number of module structures when they are directly and repeatedly spliced ​​and separated, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is the overall bottom structure diagram of the utility model;

[0020] Figure 3 It is a structural diagram of the mold body and the mounting mechanism in the utility model;

[0021] Figure 4 It is a connection diagram of the mold body and the demoulding mechanism in the utility model;

[0022] Figure 5 It is a structural diagram of the demoulding mechanism in the utility model;

[0023] Figure 6 The explosion of the ejection mechanism in the utility model Figure 1 ;

[0024] Figure 7 The explosion of the ejection mechanism in the utility model Figure 2 .

[0025] In the figure: 1. mold body; 2. demoulding mechanism; 21. motor; 22. rotating rod 1; 23. rotating rod 2; 24. pulley 1; 25. belt 1; 26. pulley 2; 27. belt 2; 28. magnet 1; 29. ​​magnet 2; 3. mounting mechanism; 31. cavity; 32. inner groove; 33. through hole; 34. rod hole; 4. ejection mechanism; 41. mounting plate; 42. electric push rod; 43. slide plate; 44. slide groove; 45. slide block; 46. half core mold; 47. magnet 3; 5. support foot; 6. bottom plate; 7. frame. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment 1

[0028] See also Figure 1-7 The utility model provides a segmented demoulding mechanism, including a mold body 1, a demoulding mechanism 2 is arranged on the mold body 1, the demoulding mechanism 2 includes a motor 21 and a rotating rod 1 22 and a rotating rod 23, a belt pulley 1 24 is fixedly sleeved on the output shaft of the motor 21 and one end of the rotating rod 1 22, a belt 1 25 is connected between the two belt pulleys 1 24, a belt 26 is fixedly sleeved on the rotating rod 1 22 and the rotating rod 2 23, a belt 27 is connected between the two belt pulleys 26, a magnet 1 28 is installed on one end of the rotating rod 1 22 away from the belt pulley 1 24 and the belt pulley 2 26, a magnet 29 is installed on one end of the rotating rod 23 away from the belt pulley 1 24 and the belt pulley 2 26, the mold body 1 A mounting mechanism 3 is provided on the mold body 1, and the mounting mechanism 3 includes a cavity 31, which is opened at the top of the mold body 1, and an inner groove 32 is continued to be opened at the bottom of the inner wall of the cavity 31, and through holes 33 are opened between the two sides of the inner wall of the cavity 31 and the two sides of the outer wall of the mold body 1, and a rod hole 34 is opened at the bottom of the inner wall of each through hole 33. The rotating rod 1 22 and the rotating rod 23 are respectively movable through the two rod holes 34, and are respectively rotatably connected to the bottom of the inner wall of the two rod holes 34 through bearings. The magnet 1 28 and the magnet 2 29 are respectively located inside the two through holes 33, and a support leg 5 is installed at the bottom of the mold body 1, and a base plate 6 is installed on the support leg 5. A frame 7 is installed on one side of the base plate 6, and the motor 21 is installed inside the frame 7.

[0029] In this embodiment, the electric push rod 42 is controlled to push the half core mold 46 to rise, and the two magnets 3 47 are adsorbed with the adjacent magnets 1 28 and 29, thereby prompting the two half core molds 46 to slide and separate on the inner wall of the cavity 31, causing the molded plastic to loosen and fall, thereby reducing the friction and demolding force of the molded plastic when demolding.

[0030] Embodiment 2

[0031] See also Figure 1-7On the basis of the first embodiment, the utility model provides a technical solution: preferably, the ejection mechanism 4 includes a mounting plate 41, the mounting plate 41 is mounted on the bottom of the mold body 1, a plate hole is provided at the bottom of the inner wall of the inner groove 32, an electric push rod 42 is provided on the inner wall of the plate hole, the electric push rod 42 is mounted on the top of the mounting plate 41, a slide plate 43 is installed on the inner rod of the electric push rod 42, the slide plate 43 is slidably connected to the inner wall of the plate hole, two slide grooves 44 are provided on the top of the slide plate 43, and the inner walls of the two slide grooves 44 are slidable A slider 45 is connected, and the tops of the two sliders 45 are fixedly connected with a half core mold 46. The two half core molds 46 are symmetrically arranged and fit together. The outer arc surfaces of the two half core molds 46 are installed with magnets three 47. The magnet one 28 and the adjacent magnet three 47 are attracted to each other by opposite poles, and the magnet two 29 and the adjacent magnet three 47 are attracted to each other by opposite poles. The two half core molds 46 are both fitted on the inner wall of the inner groove 32 and slidably connected to the inner wall of the cavity 31. The magnet one 28 and the magnet two 29 repel each other by the same poles on the side where they are close to each other.

[0032] In this embodiment, by starting the motor 21, the belt 1 25 synchronizes the rotation of the motor 21 output shaft and the rotating rod 1 22, and the belt 2 27 synchronizes the rotation of the rotating rod 1 22 and the rotating rod 2 23, and synchronously drives the magnet 1 28 and the magnet 2 29 to flip 180 degrees, thereby converting the suction force of the magnet 3 47 into a repulsive force, pushing the two half core molds 46 closer to each other and reassembling them.

[0033] Working principle: two half core molds 46 are pressed against each other on the inner wall of the inner groove 32 to form an injection molding area, and injection molding is carried out in the injection molding area. After the injection molding is completed, the inner rod of the electric push rod 42 is controlled to extend, so that the half core mold 46 is pushed up by the slide plate 43, and the molded plastic is synchronously driven to rise away from the inner groove 32. At this time, the two half core molds 46 are located in the cavity 31 and away from the inner groove 32. The two magnets 3 47 are adsorbed with the adjacent magnets 1 28 and 29, so that the two half core molds 46 are caused to slide and separate on the inner wall of the cavity 31, so that the molded plastic is synchronously demolded on both sides of the outer wall of the molded plastic, so that the molded plastic is loosened and falls off, replacing the method in which the molded plastic needs to slide frictionally for a distance in the cavity 31 before it can fall when the transmission ejector is demolded, thereby reducing the friction force of the molded plastic when demolding, and then reducing the demolding force by separating the half core molds 46, thereby improving the quality of the molded plastic, and starting the motor 21 after demolding to cause the belt 1 25 to synchronize the output shaft of the motor 21 and The rotating rod 1 22 rotates, and the rotating rod 1 22 and the rotating rod 2 23 rotate synchronously through the belt 2 27, thereby synchronously driving the magnet 1 28 and the magnet 2 29 to rotate synchronously. At this time, the magnet 1 28 and the magnet 2 29 are synchronously flipped 180 degrees, thereby converting the suction force of the magnet 3 47 into a repulsive force, pushing the two half core molds 46 closer to each other, and the slider 45 slides along the slide groove 44 to approach and limit the sliding trajectory of the half core mold 46 to ensure the stability of the separation and splicing of the two half core molds 46. After the two half core molds 46 are pushed and spliced ​​together by the repulsive force, the inner rod of the electric push rod 42 contracts, thereby pulling the two half core molds 46 to reset to the inner wall of the inner groove 32, so as to facilitate the next injection molding operation. The present invention has a simple structure and a small amount of modular structure. Compared with the prior art of realizing segmented demolding by combining a large number of modules, the present invention is not only automated and convenient in operation, but also reduces the wear of a large number of module structures when they are directly and repeatedly spliced ​​and separated, thereby improving the service life.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A segmented demoulding mechanism, comprising a mold body (1), characterized in that: The mold body (1) is provided with a demoulding mechanism (2), and the demoulding mechanism (2) comprises a motor (21), a rotating rod 1 (22) and a rotating rod 2 (23); a pulley 1 (24) is fixedly sleeved on the output shaft of the motor (21) and one end of the rotating rod 1 (22); a belt 1 (25) is connected between the two pulleys 1 (24); a pulley 2 (26) is fixedly sleeved on the rotating rod 1 (22) and the rotating rod 2 (23); a belt 2 (27) is connected between the two pulleys 2 (26); a magnet 1 (28) is installed at one end of the rotating rod 1 (22) away from the pulley 1 (24) and the pulley 2 (26); a magnet 2 (29) is installed at one end of the rotating rod 2 (23) away from the pulley 1 (24) and the pulley 2 (26).

2. A segmented demoulding mechanism according to claim 1, characterized in that: The mold body (1) is provided with a mounting mechanism (3), the mounting mechanism (3) comprising a mold cavity (31), the mold cavity (31) being opened at the top of the mold body (1), the inner wall bottom of the mold cavity (31) being further provided with an inner groove (32), through holes (33) being opened between the inner walls of the mold cavity (31) and the outer walls of the mold body (1), and the inner wall bottom of each through hole (33) being provided with a rod hole (34).

3. A segmented demoulding mechanism according to claim 2, characterized in that: The rotating rod 1 (22) and the rotating rod 2 (23) are respectively movable through the two rod holes (34) and are respectively rotatably connected to the bottom of the inner wall of the two rod holes (34) through bearings. The magnet 1 (28) and the magnet 2 (29) are respectively located inside the two through holes (33).

4. The segmented demoulding mechanism according to claim 1, characterized in that: A support foot (5) is installed at the bottom of the mold body (1), a base plate (6) is installed on the support foot (5), a frame (7) is installed on one side of the base plate (6), and the motor (21) is installed inside the frame (7).

5. The segmented demoulding mechanism according to claim 3, characterized in that: The ejection mechanism (4) also includes an ejection mechanism (4), the ejection mechanism (4) includes a mounting plate (41), the mounting plate (41) is mounted on the bottom of the mold body (1), the bottom of the inner wall of the inner groove (32) is provided with a plate hole, the inner wall of the plate hole is provided with an electric push rod (42), the electric push rod (42) is mounted on the top of the mounting plate (41), a slide plate (43) is installed on the inner rod of the electric push rod (42), the slide plate (43) is slidably connected to the inner wall of the plate hole, two slide grooves (44) are provided on the top of the slide plate (43), the inner walls of the two slide grooves (44) are slidably connected with sliders (45), the tops of the two sliders (45) are fixedly connected with half core molds (46), the two half core molds (46) are symmetrically arranged and fit each other, and the outer arc surfaces of the two half core molds (46) are provided with magnets three (47).

6. A segmented demoulding mechanism according to claim 5, characterized in that: The magnet one (28) and the adjacent magnet three (47) have opposite polarities that attract each other, and the magnet two (29) and the adjacent magnet three (47) have opposite polarities that attract each other.

7. A segmented demoulding mechanism according to claim 6, characterized in that: The two half core molds (46) are both attached to the inner wall of the inner groove (32) and slidably connected to the inner wall of the cavity (31), and the magnet 1 (28) and the magnet 2 (29) are repelled by the same polarity on the sides close to each other.

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