CN116872457A - Demoulding mechanism and forming device - Google Patents

Abstract

The application relates to a demolding mechanism and a molding device. The demolding mechanism comprises an ejector plate, an ejector pin and a mold fixing plate, wherein: one side surface of the die fixing plate is used for fixedly mounting a first die, and the thimble plate is arranged on the other side surface of the die fixing plate and can move relative to the die fixing plate; the ejector pin plate is provided with a plurality of ejector pin mounting positions, and the die fixing plate is provided with ejector pin through holes capable of allowing ejector pins to pass through; the first die is provided with a demolding hole capable of allowing the ejector pin to eject in, and the ejector pin is detachably and fixedly arranged at an ejector pin mounting position at a corresponding position according to the opening position of the demolding hole; through set up a plurality of thimble installation positions on the thimble board to when first mould is changed, can install the thimble to the thimble installation position that corresponds with the drawing of patterns hole of first mould after changing as required, thereby make demoulding mechanism can be applicable to the first mould after changing, effectively reduced the change of mould, processing cost.

Description

Demoulding mechanism and forming device

Technical Field

The application relates to the technical field related to injection molding, in particular to a demolding mechanism and a molding device.

Background

Most of the existing demolding devices of the injection molding equipment eject molded products in the mold through hydraulic power control ejector pins.

However, the existing ejector pins of the die are mostly hidden in the die, so that replacement and maintenance are inconvenient, and in addition, the ejector pin systems of different dies are mostly not compatible, so that the ejector pin systems are required to be replaced when the dies are replaced, and the processing cost of the dies is increased.

Disclosure of Invention

Accordingly, it is necessary to provide a mold release mechanism and a molding device having low mold replacement costs, in order to solve the problem of high mold replacement costs of the conventional injection molding equipment.

The application firstly provides a demoulding mechanism, which comprises an ejector plate, an ejector pin and a mould fixing plate, wherein: one side surface of the die fixing plate is used for fixedly mounting a first die, and the ejector pin plate is arranged on the other side surface of the die fixing plate and can move relative to the die fixing plate; the thimble plate is provided with a plurality of thimble installation positions, and the die fixing plate is provided with thimble through holes which can allow the thimbles to pass through; the first die is provided with a demolding hole capable of allowing the ejector pin to eject in, and according to the opening position of the demolding hole, the ejector pin is detachably and fixedly arranged at the ejector pin installation position at the corresponding position.

In one embodiment, the ejector plate is detachably fixed with at least one ejector pin adjusting block, and the ejector pin mounting position is arranged on the ejector pin adjusting block.

In one embodiment, according to the opening position of the demolding hole, the thimble adjusting block is detachably and fixedly arranged at the corresponding position of the thimble plate, so that the thimble on the thimble adjusting block corresponds to the demolding hole.

In one embodiment, the thimble installation position is an installation opening formed in one side of the thimble adjustment block, which is close to the first die, and one side of the installation opening along the horizontal direction penetrates through the thimble adjustment block.

In one embodiment, a clamping groove is further formed in the thimble adjusting block along the horizontal direction, the clamping groove is located at one side of the mounting port far away from the first die and is communicated with the mounting port, and the opening direction of the clamping groove is the same as the penetrating direction of the mounting port which is communicated with the clamping groove; the thimble comprises a clamping part and a thimble part which are fixed with each other, wherein the clamping part is clamped with the clamping groove, and the displacement of the clamping part along the vertical direction is limited by the inner wall of the clamping groove.

In one embodiment, a first guide post is fixedly arranged on one side, away from the first die, of the die fixing plate, and the ejector pin plate is in sliding connection with the first guide post.

In one embodiment, the first guide post is sleeved with an elastic member, and when the ejector pin plate and the die fixing plate are close to each other, the elastic member compresses and stores elastic potential energy.

The second aspect of the application provides a molding device, which comprises a second mold, a base, a jacking component and the demolding mechanism, wherein the second mold is fixedly arranged relative to the base, a main body part of the jacking component is relatively fixed with the base, a motion output end of the jacking component is connected with the mold fixing plate, and when the motion output end moves in a first preset direction, the mold fixing plate can be driven to move towards the second mold to a mold closing state; when the motion output end moves towards a second preset direction, the motion output end can drive the die fixing plate to move back to the second die to be in a die opening state, and in the die opening state, the motion output end can continuously move along the second preset direction and can drive the thimble plate to move along the first preset direction relative to the die fixing plate, so that the thimble is pushed into a die releasing hole of the first die.

In one embodiment, the molding device further includes a stripper jack, and when the motion output end continues to move toward the second preset direction, the stripper jack can prop against the base and limit the motion of the ejector plate, so that the mold fixing plate can move relative to the ejector plate until the ejector pins are pushed into the stripper holes.

In one embodiment, the forming device further comprises a first support plate, a second support plate and a second guide post, two ends of the second guide post are respectively and fixedly connected with the base and the second support plate, the second die is fixedly arranged on the second support plate, and the first support plate is connected to the motion output end of the jacking assembly and is in sliding connection with the second guide post.

Above-mentioned demoulding mechanism through setting up a plurality of thimble installation positions on the thimble board to when first mould changes, can dismantle original thimble on the thimble board as required, and install the thimble again to the thimble installation position that corresponds with the drawing of patterns hole of first mould after changing, thereby make demoulding mechanism can be applicable to the first mould after changing, effectively reduced the change of mould, processing cost.

Drawings

FIG. 1 is a schematic perspective view of a demolding mechanism and a demolding frame according to the present application;

fig. 2 is a front view of the molding apparatus of the present application.

Reference numerals: 10. a needle ejection plate; 11. a thimble adjusting block; 111. a mounting port; 112. a clamping groove; 12. demolding a top column; 20. a thimble; 21. a thimble portion; 22. a clamping part; 30. a die fixing plate; 31. an elastic member; 32. a first guide post; 40. a first mold; 200. a base; 300. a jacking assembly; 400. a demolding frame; 500. a second guide post; 600. a first support plate; 700. a second support plate; 800. and a second mold.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, the present application firstly provides a demolding mechanism, which comprises an ejector plate 10, an ejector pin 20 and a mold fixing plate 30, wherein: one side surface of the die fixing plate 30 is used for fixedly mounting the first die 40, and the ejector pin plate 10 is arranged on the other side surface of the die fixing plate 30 and can move relative to the die fixing plate 30; the ejector plate 10 is provided with a plurality of ejector pin mounting positions, and the die fixing plate 30 is provided with ejector pin through holes capable of allowing ejector pins 20 to pass through; the first mold 40 is provided with a demolding hole capable of allowing the ejector pin 20 to eject in, and the ejector pin 20 is detachably fixed at an ejector pin mounting position at a corresponding position according to the opening position of the demolding hole.

When the ejector plate 10 moves along the vertical direction relative to the die fixing plate 30, the ejector pin 20 fixedly arranged on the ejector plate 10 can penetrate through the ejector pin through hole of the die fixing plate 30 and be inserted into the demolding hole in the first die 40, so that a molded product in the cavity is ejected, and demolding of the product in the first die 40 is completed.

Because the ejector plate 10 is provided with a plurality of ejector pin installation positions, when the first die 40 is replaced, the original ejector pins 20 on the ejector plate 10 can be detached as required, and the ejector pins 20 are reinstalled to the ejector pin installation positions corresponding to the demoulding holes of the replaced first die 40, so that the demoulding mechanism can be suitable for the replaced first die 40, and the replacement and processing costs of the die are effectively reduced.

Specifically, the detachable fixed connection between the thimble 20 and the thimble installation position may be a common fixed connection manner such as a clamping connection, a threaded connection, etc., so long as the detachment and the fixation between the thimble 20 and the thimble installation position can be completed as required, and the application is not limited herein.

In some embodiments, the thimble through hole may be a plurality of through holes corresponding to the thimble installation positions one by one, or may be an entire through hole capable of allowing the thimbles at different positions to pass through, which is not limited herein.

Referring to fig. 1, in some embodiments, at least one thimble adjusting block 11 is detachably fixed on the thimble board 10, and the thimble mounting position is disposed on the thimble adjusting block 11.

The thimble 20 is mounted in a relay way through the thimble adjusting block 11, so that when the thimble mounting position on the thimble adjusting block 11 cannot correspond to the demoulding hole of the first mould 40, the mounting position of the thimble 20 can be adjusted by replacing different thimble adjusting blocks 11, and the demoulding mechanism can be suitable for more different moulds, and the universality of the demoulding mechanism is improved; in addition, the whole thimble plate 10 does not need to be replaced, so that the cost for replacing the mould and the operation difficulty during replacement are reduced.

Referring to fig. 1, in some embodiments, according to the opening position of the demolding hole, the ejector pin adjusting block 11 is detachably fixed at the corresponding position of the ejector pin plate 10, so that the ejector pin 20 on the ejector pin adjusting block 11 corresponds to the demolding hole.

Through setting up the mounted position of thimble adjusting block 11 along the width direction of thimble adjusting block 11, set up thimble installation position along the length direction of thimble adjusting block 11 to make the settable position of thimble installation position be array distribution on thimble board 10, through adjusting the mounted position of thimble adjusting block 11 and the mounted position of thimble 20, can make the mould type of the majority that demoulding mechanism was applicable to, further increased demoulding mechanism's general usability.

In some embodiments, the ejector plate 10 is provided with a plurality of threaded holes along the width direction of the ejector pin adjusting block 11, and the ejector pin adjusting block 11 can be fixed with any threaded hole through bolts so as to be detachably fixed at a corresponding position of the ejector plate 10 according to the opening position of the demolding hole.

Referring to fig. 1, in some embodiments, the thimble installation position is a mounting hole 111 formed on a side of the thimble adjustment block 11 near the first mold 40, and one side of the mounting hole 111 along the horizontal direction penetrates the thimble adjustment block 11.

The setting of mounting port 111 makes when thimble 20 changes, and thimble 20 can be through the horizontal direction card of mounting port 111 to thimble adjusting block 11 in, has reduced the change of thimble 20, the installation degree of difficulty.

Referring to fig. 1, in some embodiments, a clamping groove 112 is further formed in the thimble adjusting block 11 along a horizontal direction, the clamping groove 112 is located at a side of the mounting port 111 away from the first mold 40 and is communicated with the mounting port 111, and an opening direction of the clamping groove 112 is the same as a penetrating direction of the mounting port 111 which is communicated with the clamping groove; the thimble 20 includes a clamping portion 22 and a thimble portion 21 that are fixed to each other, and the clamping portion 22 is clamped with the clamping groove 112, so as to limit displacement of the clamping portion 22 along the vertical direction through the inner wall of the clamping groove 112.

Thimble 20 is the T style of calligraphy, can carry out the joint through the great joint portion 22 of diameter and joint groove 112, specifically, joint groove 112 can restrict joint portion 22 along the displacement of vertical direction, and the mounting port 111 can restrict the displacement of thimble portion 21 along the horizontal direction (except mounting port 111 opening direction), for other fixed modes, the joint can be when satisfying the connection demand between thimble 20 and the thimble board 10, effectively reduce the degree of difficulty of thimble 20 installation, dismantlement to reduce the mould and change the degree of difficulty.

Referring to fig. 1, in some embodiments, a first guide post 32 is fixed on a side of the mold fixing plate 30 away from the first mold 40, and the ejector plate 10 is slidably connected with the first guide post 32; the first guide post 32 is arranged along the vertical direction, and the ejector plate 10 is slidably connected with the first guide post 32, so that the moving track of the ejector plate 10 can be limited, the moving stability of the ejector pin 20 is improved, and the demoulding success rate is increased.

Referring to fig. 1, in some embodiments, an elastic member 31 is sleeved on the first guide post 32, and when the ejector plate 10 and the mold fixing plate 30 approach each other, the elastic member 31 compresses and stores elastic potential energy; on the one hand, when the ejector pin 20 collides with a product in the cavity, the elastic piece 31 can absorb part of kinetic energy through self deformation so as to avoid damaging the ejector pin 20 or other parts by collision, and on the other hand, when demolding is completed, the elastic piece 31 can release self-absorbed kinetic energy so as to drive the ejector pin plate 10 to reset, so that the ejector pin 20 is prevented from being blocked in a demolding hole or an ejector pin through hole.

In some embodiments, the elastic member 31 is a compression spring, however, the elastic member 31 may be a rubber pad or other parts capable of absorbing kinetic energy through self deformation, and the application is not limited herein.

The existing injection molding equipment mold closing and demolding device is completed by adopting a hydraulic system, the whole set of hydraulic system is generally divided into two hydraulic power to be respectively controlled, wherein one power controls an upper mold and a lower mold to be closed and opened, and the other power controls a thimble to mold a product after the mold is opened; the double-power design increases the equipment cost on one hand and causes the operation difficulty and maintenance difficulty of the equipment on the other hand.

In view of the above problems, referring to fig. 2, a second aspect of the present application provides a molding device, which includes a second mold 800, a base 200, a jacking assembly 300, and the demolding mechanism, wherein the second mold 800 is fixedly disposed relative to the base 200, a main body portion of the jacking assembly 300 is fixed relative to the base 200, a motion output end of the jacking assembly 300 is connected to a mold fixing plate 30, and when the motion output end moves in a first preset direction, the mold fixing plate 30 can be driven to move towards the second mold 800 to a mold closing state; when the motion output end moves in the second preset direction, the mold fixing plate 30 can be driven to move back to the second mold 800 to an open mold state, and in the open mold state, the motion output end continues to move in the second preset direction, so that the ejector pin plate 10 can be driven to move in the first preset direction relative to the mold fixing plate 30, so that the ejector pins 20 are ejected into the demolding holes of the first mold 40.

The two actions of opening and closing the die and demolding can be completed simultaneously by only one power source of the jacking assembly 300, so that the equipment cost of the forming device and the operation and maintenance difficulties are effectively reduced.

In some embodiments, the forming device further includes a demolding frame 400, the motion output end is fixedly connected with the demolding frame 400, and the mold fixing plate 30 is fixedly arranged on the demolding frame 400, so that the jacking assembly 300 drives the first mold 40 and the second mold 800 to open, and the demolding frame 400 is fixedly arranged on the first support plate 600.

Referring to fig. 2, in some embodiments, the forming apparatus further includes a stripper jack 12, and when the movement output end continues to move toward the second preset direction, the stripper jack 12 can abut against the base 200 and limit the movement of the ejector plate 10, so that the mold fixing plate 30 can move relative to the ejector plate 10 until the ejector pins 20 eject into the stripper holes.

In some embodiments, the stripper jack 12 is fixed on one side end surface of the ejector plate 10 near the base 200; the jacking assembly 300 can drive the demolding frame 400 and the demolding mechanism to move in the vertical direction relative to the base 200, so that the first mold 40 and the second mold 800 are clamped or unclamped; when the demolding mechanism moves to the direction close to the base 200 until the demolding ejector 12 abuts against the base 200, at this time, the demolding frame 400 does not abut against the base 200 yet, and as the demolding frame 400 and the demolding mechanism further approach to the base 200, the demolding ejector 12, the ejector pin plate 10 and the ejector pin 20 remain relatively static, the mold fixing plate 30 gradually moves to the direction close to the base 200, the ejector pin 20 gradually protrudes into the cavity along the sequence of the ejector pin through hole, the demolding hole and the cavity, and then the product in the cavity is ejected out, so that demolding is completed.

In other embodiments, the stripper jack 12 is fixed on an end surface of the base 200 near the ejector plate 10, or the corresponding stripper jack 12 is fixed on the base 200 and the ejector plate 10.

Referring to fig. 2, in some embodiments, the forming apparatus further includes a first support plate 600, a second support plate 700, and a second guide post 500, wherein two ends of the second guide post 500 are fixedly connected with the base 200 and the second support plate 700, respectively, the second mold is fixedly arranged on the second support plate 700, and the first support plate 600 is connected to the motion output end of the jacking assembly 300 and is slidably connected with the second guide post 500.

The second guide post 500 is disposed along the vertical direction, and is slidably connected with the second guide post 500 through the first support plate 600, so as to limit the movement track of the first support plate 600, thereby increasing the movement stability of the first mold 40 and increasing the accuracy of mold opening and closing.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. The utility model provides a demoulding mechanism which characterized in that includes thimble board (10), thimble (20) and mould fixed plate (30), wherein:

one side surface of the die fixing plate (30) is used for fixedly mounting a first die (40), and the ejector plate (10) is arranged on the other side surface of the die fixing plate (30) and can move relative to the die fixing plate (30);

the ejector plate (10) is provided with a plurality of ejector pin installation positions, and the die fixing plate (30) is provided with ejector pin through holes capable of allowing the ejector pins (20) to pass through;

the first die (40) is provided with a demolding hole capable of allowing the ejector pin (20) to be ejected in, and the ejector pin (20) is detachably and fixedly arranged at the ejector pin mounting position at the corresponding position according to the opening position of the demolding hole.

2. Demoulding mechanism according to claim 1, characterized in that at least one thimble adjustment block (11) is detachably fixed to the thimble plate (10), and the thimble mounting position is arranged on the thimble adjustment block (11).

3. The demolding mechanism according to claim 2, characterized in that, depending on the opening position of the demolding hole, the ejector pin adjusting block (11) is detachably fixed at a corresponding position of the ejector plate (10) so that the ejector pin (20) on the ejector pin adjusting block (11) corresponds to the demolding hole.

4. The demolding mechanism according to claim 2, characterized in that the ejector pin mounting position is a mounting opening (111) formed in one side of the ejector pin adjusting block (11) close to the first mold (40), and one side of the mounting opening (111) in the horizontal direction penetrates through the ejector pin adjusting block (11).

5. The demolding mechanism according to claim 4, characterized in that a clamping groove (112) is further formed in the thimble adjusting block (11) along the horizontal direction, the clamping groove (112) is positioned at one side of the mounting port (111) away from the first mold (40) and is communicated with the mounting port (111), and the opening direction of the clamping groove (112) is the same as the penetrating direction of the mounting port (111) communicated with the mounting port;

the thimble (20) comprises a clamping part (22) and a thimble part (21) which are fixed with each other, wherein the clamping part (22) is clamped with the clamping groove (112) so as to limit the displacement of the clamping part (22) along the vertical direction through the inner wall of the clamping groove (112).

6. Demoulding mechanism according to claim 1, characterized in that a first guide post (32) is fixed on the side of the mould fixing plate (30) away from the first mould (40), and the ejector plate (10) is in sliding connection with the first guide post (32).

7. Demoulding mechanism according to claim 6, characterized in that said first guide post (32) is provided with an elastic element (31), said elastic element (31) compressing and storing elastic potential energy when said ejector plate (10) and said mould fixing plate (30) are mutually approached.

8. A forming device, characterized by comprising a second die (800), a base (200), a jacking component (300) and the demolding mechanism as claimed in any one of claims 1 to 7, wherein the second die (800) is fixedly arranged relative to the base (200), a main body part of the jacking component (300) is relatively fixed with the base (200), a motion output end of the jacking component (300) is connected with the die fixing plate (30), and when the motion output end moves towards a first preset direction, the die fixing plate (30) can be driven to move towards the second die (800) to a die-closing state; when the motion output end moves towards a second preset direction, the motion output end can drive the die fixing plate (30) to move back to the second die (800) to be in a die opening state, and in the die opening state, the motion output end can drive the ejector plate (10) to move along a first preset direction relative to the die fixing plate (30) continuously along the second preset direction, so that the ejector pins (20) are ejected into the demolding holes of the first die (40).

9. The molding apparatus of claim 8, further comprising a stripper jack (12), wherein the stripper jack (12) is capable of abutting against and restricting movement of the ejector plate (10) relative to the base (200) when the movement output continues to move in the second preset direction, such that the mold fixing plate (30) is capable of moving relative to the ejector plate (10) to the ejector pins (20) to eject into the stripper holes.

10. The molding apparatus of claim 8, further comprising a first support plate (600), a second support plate (700), and a second guide post (500), wherein two ends of the second guide post (500) are fixedly connected to the base (200) and the second support plate (700), respectively, the second mold (800) is fixedly arranged on the second support plate (700), and the first support plate (600) is connected to the motion output end of the jacking assembly (300) and is slidably connected to the second guide post (500).