Injection mold convenient to demold

Abstract

The injection mold convenient to demold comprises a front mold plate and a rear mold plate, a front mold core is embedded in the front mold plate, a concave cavity used for forming a product is formed in the face, facing the rear mold plate, of the front mold core in a concave mode, a rear mold core is embedded in the rear mold plate, and a forming mold cavity used for forming the product is formed between the front mold core and the rear mold core. The injection mold convenient to demold further comprises a demolding insert, the demolding insert sequentially penetrates through the front mold plate and the front mold core, the end, away from the forming mold cavity, of the demolding insert is connected with a movable plate, the movable plate is used for driving the demolding insert to be close to or away from the forming mold cavity, an air blowing channel is formed in the demolding insert in a penetrating mode, and the air blowing channel communicates with an air blowing mechanism. The air blowing mechanism is used for blowing air into the forming mold cavity for demolding; during mold closing, the front mold core, the rear mold core and the demolding insert jointly define a forming mold cavity, and the blowing channel is not communicated with the forming mold cavity; and during demolding, the blowing channel is communicated with the forming mold cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould technical field especially is related to a injection mould that demoulding is convenient. BACKGROUND

[0002] At present, injection mould is widely used in the production of products, and the injection mould is used to inject molten plastic into a forming cavity, and the plastic product is obtained after cooling and forming. When producing thin-walled plastic products by using the injection mould, the product is often difficult to demould during the demoulding process, especially when the glue material adopts TPU material. The main reason is that the product and the surface of the mold plate of the concave mold form a vacuum state, causing the product to be firmly adsorbed on the surface of the mold plate and difficult to demould.

[0003] In the prior art, if the rear mold plate of the injection mould is a concave mold, the product will be adsorbed on the rear mold plate. Generally, a blowing mechanism and an additional ejector pin mechanism can be added to solve the problem of difficult demoulding of the product.

[0004] However, if the front mold plate of the injection mould is a concave mold, the product will be adsorbed on the front mold plate. In this case, the ejector pin mechanism cannot work. Generally, a blowing mechanism is used to break the vacuum between the product and the front mold plate to solve the problem of vacuum adsorption of the product. Only using the blowing mechanism may cause the product to be locally inflated and deformed due to excessive air pressure, resulting in damage to the product. INVENTION CONTENTS

[0005] The utility model aims to provide a injection mould that demoulding is convenient, aims at solving or at least partial solution of the insufficient of prior art, it not only can conveniently product automatic demoulding, improve production efficiency, and can guarantee that product is not deformed in the demoulding process, improve product yield.

[0006] The utility model provides a injection mould that demoulding is convenient, including front mold plate and rear mold plate, front mold plate is embedded with front mold and the one side of front mold is concave to the rear mold plate for forming product's recessed cavity, rear mold plate is embedded with rear mold, it is provided with the forming cavity for forming product between front mold and rear mold, the injection mould that demoulding is convenient still includes demoulding insert, demoulding insert penetrates front mold plate, front mold in proper order, the end of demoulding insert away from forming cavity is connected with a movable plate, and the movable plate is used for driving demoulding insert to be close to or away from forming cavity, and the blow channel is set up on demoulding insert and penetrates, and the blow channel is linked with blowing mechanism, and blowing mechanism is used for blowing to the forming cavity to demoulding;When closing, front mold, rear mold, demoulding insert jointly enclose forming cavity and the blow channel is not communicated with forming cavity;When demoulding, the blow channel is communicated with forming cavity.

[0007] Further, the demolding insert has a connecting part and a contact part, one end of the connecting part is connected with the movable plate, the other end of the connecting part is connected with the contact part; during injection molding, the contact part abuts against the product.

[0008] Further, the front mold plate and the front mold core are respectively provided with a matching hole matched with the demolding insert and a communication hole matched with the demolding insert; during demolding, the blowing channel, the communication hole and the molding cavity are communicated.

[0009] Further, the axial section of the contact part is trapezoidal, and the contact part gradually narrows in the direction towards the molding cavity.

[0010] Further, the radial section area of the connecting part is larger than that of the contact part, the blowing channel is arranged through the connecting part, and the gas outlet end of the blowing channel extends to the connecting part and the contact part.

[0011] Further, the contact part is concavely provided with a gas guide groove communicated with the blowing channel, and the gas guide groove extends in the direction towards the molding cavity.

[0012] Further, the movable plate is movably arranged above the front mold plate, and the movable plate can be close to or away from the front mold plate to drive the demolding insert to be close to or away from the molding cavity.

[0013] Further, the movable plate is movably arranged above the front mold plate, and the movable plate can be close to or away from the front mold plate to drive the demolding insert to be close to or away from the molding cavity.

[0014] Further, the blowing mechanism comprises an air compressor and a gas pipe communicated with the gas outlet end of the air compressor, and the gas pipe communicates the air compressor with the gas guide hole.

[0015] Further, the front mold core is detachably embedded with a mold core insert, the mold core insert is matched with the demolding insert, and the mold core insert, the demolding insert and the rear mold core jointly enclose the molding cavity.

[0016] The demolding convenient injection mold provided by the utility model can improve product yield and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the mold closing state of the demolding convenient injection mold.

[0018] Figure 2 It is the partial schematic view before demoulding of the injection mould convenient to demould of the utility model.

[0019] Figure 3 It is the partial schematic view after demoulding of the injection mould convenient to demould of the utility model.

[0020] Figure 4 It is the sectional view of the demoulding insert shown in Figure 1

[0021] It is the sectional view of the demoulding insert shown in Figure 5 Figure 4 It is the sectional view of the demoulding insert shown in

[0022] Figure 6 It is the sectional view of the demoulding insert shown in Figure 1

[0023] It is the sectional view of the demoulding insert shown in Figure 7 Figure 2 Specific embodiment

[0024] The specific embodiment of the utility model is described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0025] The terms "first", "second", "third", "fourth" and the like (if exist) in the specification and claims of the utility model are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0026] The up, down, left, right, front, back, top, bottom and the like (if exist) in the specification and claims of the utility model are defined according to the position of the structure in the drawing and the position between structures, just to express the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application claimed.

[0027] Please refer to Figures 1-3 and Figures 6-7 An injection mould convenient to demould, comprising a front mould plate 10 and a back mould plate 20, the front mould plate 10 is embedded with a front mould core 11, and one side of the front mould core 11 facing the back mould plate 20 is concave and is provided with a concave cavity 15 for forming a product 100, the back mould plate 20 is embedded with a back mould core 21, and a forming cavity 60 for forming the product 100 is arranged between the front mould core 11 and the back mould core 21.

[0028] It should be noted that, since the front mould core 11 has the concave cavity 15, the product 100 will be vacuum adsorbed on the front mould core 11 when the mould is demoulded.​​​

[0029] The injection mold convenient for demolding further comprises a demolding insert 30, the demolding insert 30 penetrates through the front mold plate 10 and the front mold core 11 in sequence, and one end of the demolding insert 30, which is far away from the forming cavity 60, is connected with a movable plate 40, and the movable plate 40 is used for driving the demolding insert 30 to be close to or far away from the forming cavity 60.

[0030] The demolding insert 30 is provided with a blowing channel 31 penetrating through the demolding insert 30, the blowing channel 31 is connected with a blowing mechanism 50, and the blowing mechanism 50 is used for blowing gas to the forming cavity 60 to demold.

[0031] When the mold is closed, the front mold core 11, the rear mold core 21 and the demolding insert 30 jointly enclose the forming cavity 60, and the blowing channel 31 is not connected with the forming cavity 60.

[0032] When the mold is opened, the blowing channel 31 is connected with the forming cavity 60.

[0033] According to the injection mold convenient for demolding provided by the embodiment of the utility model, through cooperation of the demolding insert 30, the movable plate 40 and the front mold core 11, in the demolding process, the demolding insert 30 can be moved relative to the front mold core 11 to separate from the product 100, so that a gap is left between the demolding insert 30 and the front mold core 11 to connect the blowing channel 31 and the forming cavity 60, the vacuum of the forming cavity 60 is broken, the pressure of the blowing mechanism 50 blowing in the subsequent process is effectively reduced, and the product 100 is prevented from being deformed by blowing; through cooperation of the blowing channel 31 and the blowing mechanism 50, the blowing mechanism 50 can blow gas into the forming cavity 60 to separate the product 100 from the surface of the front mold core 11, so that the product 100 can be automatically and smoothly demolded. Therefore, the injection mold convenient for demolding can improve product yield and production efficiency.

[0034] Please refer to Figures 4-7 The demolding insert 30 has a connecting part 32 and a contact part 33, one end of the connecting part 32 is connected with the movable plate 40, and the other end of the connecting part 32 is connected with the contact part 33. During injection molding, the contact part 33 abuts against the product 100.

[0035] Further, the front mold plate 10 and the front mold core 11 are respectively provided with a cooperation hole 13 matched with the demolding insert 30 and a communication hole 14 matched with the demolding insert 30. When the mold is closed, the cooperation hole 13 and the communication hole 14 respectively abut against the connecting part 32 and the contact part 33, at this time, the blowing channel 31 is not connected with the forming cavity 60; when the mold is opened, the demolding insert 30 is separated from the product 100 under the driving of the movable plate 40, at this time, the contact part 33 does not abut against the communication hole 14 and a gap is left, so that the blowing channel 31, the communication hole 14 and the forming cavity 60 are connected.

[0036] More specifically, the axial section of the contact part 33 is trapezoidal, and the contact part 33 gradually narrows towards the direction of the forming cavity 60, so that the contact part 33 and the communication hole 14 can give out a gap when demolding, thereby enabling the blowing channel 31 to communicate with the forming cavity 60.

[0037] More specifically, the radial section area of the connecting part 32 is greater than that of the contact part 33, which can minimize the contact area between the end of the contact part 33 and the product 100, so as to prevent the product 100 from being damaged when the vacuum is broken due to the excessive contact area between the contact part 33 and the product 100. In addition, the connecting part 32 is provided with the blowing channel 31, and the gas outlet end of the blowing channel 31 extends to the connecting part 32 and the contact part 33.

[0038] More specifically, the contact part 33 is recessed with a gas guide groove 34 communicating with the blowing channel 31, and the gas guide groove 34 extends towards the direction of the forming cavity 60. When demolding and blowing, the gas guide groove 34 can guide the gas to flow more directly and smoothly to the forming cavity 60, thereby improving the demolding speed of the product 100.

[0039] Please refer to Figures 1-3 , the movable plate 40 is movably arranged above the front mold plate 10, and the movable plate 40 can be close to or away from the front mold plate 10 to drive the demolding insert 30 to be close to or away from the forming cavity 60. In this embodiment, the movable plate 40 can drive the demolding insert 30 to rise or fall to realize the demolding insert 30 close to or away from the forming cavity 60.

[0040] Further, the movable plate 40 is provided with a gas guide hole 41 communicating with the blowing channel 31, and the blowing mechanism 50 supplies gas to the blowing channel 31 through the gas guide hole 41.

[0041] The blowing mechanism 50 comprises an air compressor 51 and a gas pipe 52 communicating with the gas outlet end of the air compressor 51, and the gas pipe 52 communicates the air compressor 51 with the gas guide hole 41.

[0042] Please refer to Figure 6 , the front mold core 11 is detachably embedded with a mold core insert 12, the mold core insert 12 cooperates with the demolding insert 30, and the mold core insert 12, the demolding insert 30 and the rear mold core 21 jointly form the forming cavity 60. The mold core insert 12 is provided with a communication hole 14, and the recessed cavity 15 is located on the lower surface of the mold core insert 12. Since the mold is used for a long time, the front mold core 11 is more prone to wear, and the mold core insert 12 is easy to disassemble and replace, which can avoid excessive wear of the front mold core 11, thereby prolonging the service life of the mold.

[0043] The demolding process of the injection mold convenient for demolding provided by the utility model discloses:

[0044] (1) Please refer to Figure 1, the connecting part 32 and the contact part 33 of the demolding insert 30 are respectively matched with the matching hole 13 and the communication hole 14 in the clamping state, at this time, the blowing channel 31 is not communicated with the forming cavity 60; after injection molding, the contact part 33 abuts against the surface of the product 100.

[0045] (2) refer to Figure 2 and Figure 7 In the embodiment, before demolding, the movable plate 40 drives the demolding insert 30 to ascend by 5mm, the demolding insert 30 is separated from the product 100, at the same time, the contact part 33 is not matched with the communication hole 14 to leave a gap, at this time, the blowing channel 31 is communicated with the forming cavity 60, and the vacuum breaking of the forming cavity 60 is realized.

[0046] (3) refer to Figure 3 , demolding, the front mold plate 10 ascends, at the same time, the blowing mechanism 50 works to supply gas to the blowing channel 31, the gas is blown to the product 100 through the blowing channel 31 and the communication hole 14, the product 100 is separated from the concave cavity 15 of the front mold core 11, and automatic demolding is realized.

[0047] The injection mold convenient for demolding provided by the utility model has the advantages that:

[0048] (1) the product can be automatically and smoothly demolded, and the production efficiency is improved.

[0049] (2) the pressure of the blowing mechanism in the subsequent process is effectively reduced, the product is prevented from being deformed by blowing, and the product yield is improved.

[0050] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A demolding convenient injection mold comprising a front mold plate (10) and a back mold plate (20), the front mold plate (10) is embedded with a front mold core (11) and one side of the front mold core (11) facing the back mold plate (20) is concavely provided with a concave cavity (15) for molding a product (100), the back mold plate (20) is embedded with a back mold core (21), a molding cavity (60) for molding the product (100) is provided between the front mold core (11) and the back mold core (21), characterized in that, The injection mold convenient for demolding further comprises a demolding insert (30) penetrating through the front mold plate (10) and the front mold core (11) in sequence, one end of the demolding insert (30) away from the forming cavity (60) is connected with a movable plate (40), the movable plate (40) is used for driving the demolding insert (30) to be close to or away from the forming cavity (60), a blowing channel (31) is provided on the demolding insert (30) and penetrates through, the blowing channel (31) is connected with a blowing mechanism (50), and the blowing mechanism (50) is used for blowing air to the forming cavity (60) to demold; When the mold is closed, the front mold core (11), the rear mold core (21) and the demolding insert (30) jointly enclose the forming cavity (60), and the blowing channel (31) is not connected with the forming cavity (60); When the mold is opened, the blowing channel (31) is connected with the forming cavity (60).

2. The demolding-easy injection mold according to claim 1, wherein The demolding insert (30) has a connecting part (32) and a contact part (33), one end of the connecting part (32) is connected with the movable plate (40), and the other end of the connecting part (32) is connected with the contact part (33); during injection molding, the contact part (33) abuts against the product (100).

3. The easy-release injection mold of claim 2, wherein, The front mold plate (10) and the front mold core (11) are respectively provided with a matching hole (13) matched with the demolding insert (30) and a communication hole (14) matched with the demolding insert (30); during demolding, the blowing channel (31), the communication hole (14) and the forming cavity (60) are connected.

4. The easy-release injection mold of claim 2, wherein, The axial section of the contact part (33) is trapezoidal, and the contact part (33) gradually narrows in the direction towards the forming cavity (60).

5. The easy-release injection mold of claim 4, wherein, The radial section area of the connecting part (32) is greater than that of the contact part (33), the blowing channel (31) penetrates through the connecting part (32), and the air outlet end of the blowing channel (31) extends to the connection position of the connecting part (32) and the contact part (33).

6. The easy-release injection mold of claim 5, wherein, The contact part (33) is concavely provided with a gas guide groove (34) connected with the blowing channel (31), and the gas guide groove (34) extends in the direction towards the forming cavity (60).

7. The easy-release injection mold of claim 1, wherein, The movable plate (40) is movably arranged above the front mold plate (10), and the movable plate (40) can be close to or away from the front mold plate (10) to drive the demolding insert (30) to be close to or away from the forming cavity (60).

8. The easy-release injection mold of claim 1, wherein, The movable plate (40) is provided with a gas guide hole (41) penetrating through and connected with the blowing channel (31), and the blowing mechanism (50) supplies air to the blowing channel (31) through the gas guide hole (41).

9. The easy-release injection mold of claim 8, wherein, The blowing mechanism (50) comprises an air compressor (51) and a gas pipe (52) connected with the air outlet end of the air compressor (51), and the gas pipe (52) connects the air compressor (51) with the gas guide hole (41).

10. The easy-release injection mold of claim 1, wherein, The front mould core (11) is detachably embedded with a mould core insert (12), the mould core insert (12) is matched with the demoulding insert (30), the mould core insert (12), the demoulding insert (30) and the rear mould core (21) jointly enclose the forming mould cavity (60).

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