CN107263817B - A kind of release method of injection mold and the mold - Google Patents

Abstract

The present invention provides a kind of injection mold and the release method of the mold, and the plastic products and mold separation of die for molding can be fast and effeciently made using the injection mold.Wherein the release method is the following steps are included: (1) separates the preceding mould module and rear mold module of moulded plastic products outer surface, so that preceding mould module and rear mold module are in the both ends of a through-hole on mold base；(2) it is moved to the core model module of moulded plastic products inner surface above through-hole, plastic products are moved to above through-hole with core model module；(3) push rod of core model module is moved forward relative to the sleeve of core model module, so that moving forward with two lateral mass of the scalable connection of push rod and the core model module hinged with sleeve with push rod, while two lateral mass are shunk inwardly under the pulling of sleeve；(4) plastic products are separated with core model module, are fallen from through-hole.

Description

A kind of release method of injection mold and the mold

Technical field

The present invention relates to a kind of injection mold and the release methods of the mold.

Background technique

The existing release method for injection mold is generally only applicable to the simple plastics system of inner surface structure on the market Product, and the plastic products of surface texture complexity are then difficult to realize with automatic demoulding, cause to use manually by plastic products It is removed from the molds, reduces production efficiency.

Summary of the invention

The main purpose of the present invention is to provide a kind of injection mold for being able to achieve plastic products automatic demoulding and the moulds The release method of tool.

To achieve the above objectives, the present invention provides a kind of injection mold, is used to form a plastic products, injection mold packet It includes:

Pedestal, middle part form a through-hole；

Mold comprising mould module, a rear mold module, two rear mold guide rails and a core model module, the preceding mould before one For module along the through-hole on one side set on the upper surface of the pedestal, two rear mold guide rails are mutual along the another both sides of the through-hole It is set to the pedestal in parallel, the rear mold module can be set between the two rear mold guide rails movably forward and backward, so that described It is molded when rear mold module moves forward with the preceding mould module, when the rear mold module moves backward, the through-hole is in described Between preceding mould module and the rear mold module, the core model module includes: a jacking block, two lateral mass, a push rod, a sleeve and two Connecting rod, the push rod can be set to the rear mold module movably forward and backward, and the front end of the push rod extends to the preceding mould module, institute The front end that jacking block is fixedly arranged on the push rod is stated, two lateral mass are telescopically arranged on the two sides of the push rod, thus two sides Block can movably be sheathed on the push rod close to or far from the push rod, the sleeve, and two lateral mass pass through described respectively The two sides of connecting rod and the sleeve are hinged, so that pulling two sides when sleeve is moved backward relative to the push rod Block has a limiting slot to contract, the rear mold module, and the limiting slot extends forward from the rear end of the rear mold module, institute It states sleeve and extends a fixture block to the limiting slot, so that the sleeve is not when the fixture block is moved to the front end of limiting slot It can the relatively described rear mold module forward movement；

And

Driving device, including rear mold driving device and core model driving device, the rear mold driving device is for driving institute The back-and-forth motion of rear mold module is stated, the core model driving device is for driving the push rod of the core model module to be moved forward and backward.

Preferably, the two sides of the sleeve form two sliding through holes, and two lateral mass pass through the sliding of the sleeve two sides Through-hole and the scalable connection of the push rod.

Preferably, the rear mold driving device includes two first cylinders, and two first cylinders are fixedly arranged on the pedestal, and two First cylinder is opposite with the both ends of the rear mold rear side respectively, the push rod of two first cylinders symmetrically with it is described The both ends of rear mold rear side connect.

Preferably, the core model driving device includes one second cylinder, and second cylinder is fixedly arranged on two first gas Between cylinder, the push rod of the core model module passes through the rear mold module and extends to second cylinder, second cylinder The push rod of the core model module is driven to be moved forward and backward.

Preferably, the preceding mould module includes preceding die cap plate and preceding mould cavity plate, and the preceding mould cavity plate is fixedly arranged on the bottom Seat, the preceding die cap plate are separably set on the preceding mould cavity plate, and the rear mold module includes that rear mold cover board and rear mold are recessed Mould, the rear mold cavity plate are movably disposed in the two rear mold guide rails, and it is recessed that the rear mold cover board is separably set to the rear mold On mould.

Preferably, a sliding rail is respectively provided on the inside of the two rear mold guide rails, two sides of the rear mold module are to described in two Sliding rail each extends over out a sliding block, and the sliding block is movably disposed in the sliding rail.

Preferably, two lateral mass are by spring and the scalable connection of the push rod, to allow two lateral mass close or Far from the push rod.

The present invention also provides a kind of by plastic products out of injection mold release method, comprising the following steps:

(1) the preceding mould module and rear mold module of moulded plastic products outer surface are separated, so that the preceding mould module and institute State the both ends that rear mold module is in a through-hole on mold base；

(2) it is moved to the core model module of moulded plastic products inner surface above the through-hole, plastic products are with the core Mould module is moved to above the through-hole；

(3) push rod of the core model module is moved forward relative to the sleeve of the core model module, so that with the push rod Two lateral mass of scalable connection and the core model module hinged with the sleeve are moved forward with the push rod, while two institutes Lateral mass is stated to shrink inwardly under the pulling of the sleeve；

(4) plastic products are separated with the core model module, are fallen from the through-hole.

Compared with the prior art, the advantages of the present invention are as follows injection mold of the invention passes through each drive after plastic shaping Dynamic device may make front and back two parts of mold to separate, and make the core model portion retracts of mold, thus plastic products completely with Mold separation, and fallen from the through-hole of mold base.The more complicated modeling of internal structure may be implemented in injection mold of the invention The automatic demoulding of material products.

Detailed description of the invention

Fig. 1 is the partial schematic diagram of a preferred embodiment of injection mold according to the present invention, and preceding mould is not shown in the figure Cover board and rear mold cover board.

Fig. 2 is the explosive view of a preferred embodiment of injection mold according to the present invention.

Fig. 3 is the part explosive view of a preferred embodiment of injection mold according to the present invention, it is shown that core model module Each section.

Fig. 4 A-D shows a preferred embodiment moulded plastic products of injection mold of the invention and by plastic products The process of demoulding.

Specific embodiment

It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.

As shown in Fig. 1-Fig. 4 D, a kind of injection mold of the invention includes: pedestal 1, mold 2 and driving device 3.Mould Tool portion 2 and driving device 3 are set to pedestal 1, and driving device 3 is for driving each section of mold 2 to move.

The middle part of pedestal 1 forms a through-hole 10, after the plastic products 8 in mold 2 are separated with mold 2, plastics system Product 8 are fallen by through-hole 10.When actual production, the lower of through-hole 10 can place the device for collecting plastic products 8.

Preferably, through-hole 10 is a rectangular through-hole.

Mold 2 includes mould module 21, a rear mold module 22, two rear mold guide rails 23 and a core model module 24 before one.

Preceding mould module 21 is along the upper surface for being fixedly arranged on pedestal 1 on one side of through-hole 10, and two rear mold guide rails 23 are along through-hole 10 Another both sides be set to pedestal 1 in parallel to each other, so that two rear mold guide rails 23 are in the two sides of preceding mould module 21.Rear mold module 22 can It is movably set between two rear mold guide rails 23, so that rear mold module 22 can move forward and preceding mould module along two rear mold guide rails 23 21 moldings, or move backward and separated with preceding mould module 21.When rear mold module 22 is moved to rearmost end, through-hole 10 is in preceding mould mould Between block 21 and rear mold module 22.

Core model module 24 can be set in rear mold module 22 movably forward and backward.When rear mold module 22 and preceding mould module 21 mold When, core model module 24 is moved to the rear end of rear mold module 22, in the inner wall of rear mold module 22, the inner wall and core model of preceding mould module 21 Shape forming cavity 20 between the outer wall of module 24.

Preceding mould module 21 has an injecting hole 211, and type chamber 20 is connected to by injecting hole 211 with outside, so as to what will be melted Plastics were by after plastics cooling and shaping, both having formed plastic products 8 in injecting hole injection type chamber 20.

Preceding mould module 21 includes preceding die cap plate 212 and preceding mould cavity plate 213, and preceding mould cavity plate 213 is fixedly arranged on pedestal 1, preceding mould Cover board 212 is separably set on preceding mould cavity plate 213, so that preceding mould module 21 is openable or is closed, mould module 21 before opening When, mould cavity plate 213, is also convenient for coating release agent before can clearing up.

Preferably, rear mold module 22 includes rear mold cover board 222 and rear mold cavity plate 223, and rear mold cavity plate 223 is movably set In two rear mold guide rails 23, rear mold cover board 222 is separably set on rear mold cavity plate 223 so that rear mold module 22 it is openable or Closure.

In a further embodiment, injecting hole can also be formed in rear mold module 22, as long as guaranteeing injecting hole by type chamber 20 It is connected to outside.

The inside of two rear mold guide rails 23 is respectively provided with a sliding rail 231, and two sides of rear mold module 22 are prolonged respectively to two sliding rails 231 A sliding block 224 is stretched out, sliding block 224 is movably disposed in sliding rail 231, so that rear mold module 22 be made to be movably disposed in two rear molds Between guide rail 23.

Core model module 24 includes a jacking block 241, two lateral mass 242, a push rod 243, a sleeve 244 and two connecting rods 245. Push rod 243 can be set to rear mold module 22 movably forward and backward, and mould module 21 extends forward for the front end of push rod 243, and jacking block 241 is fixedly arranged on The front end of push rod 243.Two lateral mass 242 are telescopically arranged on the two sides of push rod 243, so that two lateral mass 242 can be close to or far from pushing away Bar 243, when two lateral mass 242 are close to push rod 243, two lateral mass 242 are to contract, when two lateral mass 242 are far from push rod 243, two sides Block 242 extends outwardly.When moulded plastic products 8, the distance between two lateral mass 242 maximum, two lateral mass 242 and jacking block at this time 241 outer surface splicing is integral, and the outer surface of two lateral mass 242 and jacking block 241 is used for the inner surface of moulded plastic products 8. After plastic mould 8 forms, to contract two sides block 242, the separation of plastic mould 8 Yu core model module 24 can be realized.

When moulded plastic products 8, rear mold module 22 and preceding mould module 21 are molded, and push rod 243 drives jacking block 241 and two Lateral mass 242 is moved to the rear end of rear mold module 22, and the rear end of two lateral mass 242 is butted on the rear end of rear mold module 22, at this time two lateral mass The distance between 242 maximums.When plastic products 8 demould, mould module 21 and rear mold module 22 are separated before making, and are respectively at logical The both ends in hole 10, the drive jacking block 241 of push rod 243 and two lateral mass 242 move forward to the top of through-hole 10, jacking block 242 and two Lateral mass 242 is separated with rear mold module 22, and plastic products 8 are moved to 10 top of through-hole with jacking block 242 and two lateral mass 242.

Sleeve 244 is movably sheathed on push rod 243, and the two sides of sleeve 244 form sliding through hole 2440, two lateral mass 242 pass through the sliding through hole 2440 and the scalable connection of push rod 243 of 244 two sides of sleeve.

In a preferred embodiment, lateral mass 242 and the scalable connection of push rod 243 are implemented especially by following manner: The two sides of push rod 243 extend outward a connection sleeve 2431, and lateral mass 242 extends a connecting shaft to connection sleeve 2431 2421, it is set to 2421 clearance fit of connecting shaft in connection sleeve 2431, when connecting shaft 2421 is inside in connection sleeve 2431 Or when being displaced outwardly, lateral mass 242 is close to or far from push rod 243.

In a further embodiment, two lateral mass 242 can be by spring and the scalable connection of push rod 243, to allow two lateral mass 242 connect close to or far from one end of push rod 243 namely the spring with lateral mass 242, and the side of the other end and push rod 243 connects Connect, when lateral mass 242 is close to push rod 243, the spring is compressed, when the spring restores to the original state, between two lateral mass away from It is maximum from reaching.

Two lateral mass 242 are hinged by connecting rod 245 and the two sides of sleeve 244 respectively so that lateral mass 242 and sleeve 244 it Between distance it is farthest when, connecting rod 245 is perpendicular to lateral mass 242 and sleeve 244, when push rod 243 is moved forward relative to sleeve 244 When, two lateral mass 242 are moved forward with push rod 243, so that connecting rod 245 rotates relative to lateral mass 242 and sleeve 244, connecting rod 245 while rotate, and lateral mass 242 is inwardly pulled, namely make two lateral mass 242 close to push rod 243, thus core model module It shrinks 24 two sides.

The bottom surface of rear mold module 22 has a limiting slot 220, and limiting slot 220 extends forward from the rear end of rear mold module 22, And the front end closing of limiting slot 220.Sleeve 244 extends a fixture block 2441 to the limiting slot 220, and fixture block 2441 is removable Ground is set in limiting slot 220, when fixture block 2441 is moved to the front end of limiting slot 220 along limiting slot 220, before can not continuing Into being continued to move along to limit sleeve 224.

Driving device 3 includes rear mold driving device 31 and core model driving device 32.Rear mold driving device 31 and rear mold mould Block 22 cooperates, for driving rear mold module 22 to be moved forward and backward.Core model driving device 32 and core model module 24 cooperate, for driving core Mould module 24 is moved forward and backward.

In a preferred embodiment, rear mold driving device 31 includes two first cylinders 311, and two first cylinders 311 are fixed In pedestal 1, two first cylinders 311 are opposite with the both ends of 22 rear side of rear mold module respectively, and the push rod of two first cylinders 311 is symmetrically It is connect with the both ends of 22 rear side of rear mold module, drives rear mold module 22 mobile simultaneously using two first cylinders 311, to guarantee rear mold Not run-off the straight when module 22 is moved forward and backward.

Core model driving device 32 includes one second cylinder 321, and the second cylinder 321 is fixedly arranged between two first cylinders 311, core The push rod 243 of mould module 24 passes through rear mold module 22 and extends to the second cylinder 321,321 driving push rod of the second cylinder, 243 front and back It is mobile.That is the push rod of the push rod 243 of core model module 24 namely the second cylinder 321.

The step of injection mould processing plastic products 8 of the invention and automatic demoulding, is as follows: being driven first by rear mold Device 31 molds the forward movement of rear mold module 22 with preceding mould module 21, is in core model module 24 by core model driving device 32 The rear end of rear mold module 22, at this point, distance is maximum between two lateral mass 242 of core model module 24, at the fixture block 2441 of sleeve 244 In the rear end of limiting slot 220；Then molten plastic is injected into type chamber 20 by injecting hole 211, is cooled and shaped to molten plastic Afterwards, that is, plastic products 8 are formed, as shown in Figure 4 A；Then rear mold mould is made by rear mold driving device 31 and core model driving device 32 Block 22 and core model module 24 move backward, and separate with preceding mould module 21, plastic products are with rear mold module 22 and core model module at this time 24 move together, as shown in Figure 4 B, it is worth mentioning at this point that, it should ensure that rear mold module 22 is moved to the rear of through-hole 10；Then lead to Cross core model driving device 32 make core model module 32 with respect to rear mold module 22 move forward, plastic products 8 with core model module 24 forward Mobile, sleeve 244 is moved forward with push rod 243, and the fixture block 2441 of sleeve 244 is moved along limiting slot 220, as shown in Figure 4 C；When When fixture block 2441 is moved to 220 front end of limiting slot, sleeve 244 cannot be continued to move along, at this time core model driving device 32 after Continuous driving push rod 243 moves forward, at this time two lateral mass under the action of sleeve 244 to contract, thus in plastic products 8 Surface separation, plastic products 8 are completed demoulding, are fallen from the through-hole 10 of pedestal 1, as shown in Figure 4 D.

The present invention also provides a kind of release method, suitable for fast demoulding after forming a plastic products in injection mold, It the described method comprises the following steps:

(1) the preceding mould module 21 and rear mold module 22 of moulded plastic products outer surface are separated, so that preceding 21 He of mould module Rear mold module 22 is in the both ends of a through-hole 10 on mold base 1；

(2) the core model module 24 of moulded plastic products inner surface is made to be moved to 10 top of through-hole, plastic products 8 are with core Mould module 24 is moved to 10 top of through-hole；

(3) push rod 243 of the core model module 24 is moved forward relative to the sleeve 244 of the core model module 24, so that With the scalable connection of the push rod 243 and with two lateral mass of the hinged core model module 24 of the sleeve 244 with the push rod 243 move forward, while two lateral mass 242 under the pulling of the sleeve 244 to contract；

(4) plastic products 8 are separated with the core model module 24, are fallen from the through-hole 10.

By step (1) and (2), plastic products 8 are separated with preceding mould module 21 and rear mold module 22 namely plastic products 8 Outer surface and mould separating, the only inner surface of plastic products 8 bond together with core model module 24.By step (3) Afterwards, the two sides of core model module 24 are also separated with plastic products 8, although at this time the jacking block 241 of core model module 24 also and plastic products 8 bondings, but under the action of 8 self gravity of plastic products, plastic products 8 may make to separate with jacking block 241, this is because modeling The contact area of material products 8 and jacking block 241 is smaller and cohesive force between plastic products 8 and jacking block 241 is not strong, therefore Plastic products 8 can be separated with jacking block 241 easily.

The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its Equivalent defines.

Claims (8)

1. a kind of injection mold, for forming a plastic products, which is characterized in that the injection mold includes:

Pedestal, middle part form a through-hole；

Mold comprising mould module, a rear mold module, two rear mold guide rails and a core model module before one, the preceding mould module Along the upper surface for being set to the pedestal on one side of the through-hole, two rear mold guide rails are parallel to each other along the another both sides of the through-hole Ground is set to the pedestal, and the rear mold module can be set between the two rear mold guide rails movably forward and backward,

So that molded when the rear mold module moves forward with the preceding mould module, when the rear mold module moves backward described in Through-hole be between the preceding mould module and the rear mold module, the core model module include: a jacking block, two lateral mass, a push rod, One sleeve and two connecting rods, the push rod can be set to the rear mold module movably forward and backward, and the front end of the push rod is to before described Mould module extends, and the jacking block is fixedly arranged on the front end of the push rod, and two lateral mass are telescopically arranged on the two sides of the push rod, To which two lateral mass can movably be sheathed on the push rod, two lateral mass close to or far from the push rod, the sleeve It is hinged by the two sides of the connecting rod and the sleeve respectively, so that when the sleeve is moved backward relative to the push rod, Pull two lateral mass to contract, the rear mold module has a limiting slot,

The limiting slot extends forward from the rear end of the rear mold module, and the sleeve extends a fixture block to the limiting slot,

So that the sleeve cannot the relatively described rear mold module forward movement when fixture block is moved to the front end of limiting slot；

And

Driving device, including rear mold driving device and core model driving device, the rear mold driving device for drive it is described after Mould module is moved forward and backward, and the core model driving device is for driving the push rod of the core model module to be moved forward and backward.

2. injection mold according to claim 1, which is characterized in that two sliding through holes of two sides formation of the sleeve, two Sliding through hole of the lateral mass through the sleeve two sides and the scalable connection of the push rod.

3. injection mold according to claim 1, which is characterized in that the rear mold driving device includes two first cylinders, Two first cylinders are fixedly arranged on the pedestal, and two first cylinders are opposite with the both ends of the rear mold rear side respectively, The push rod of two first cylinders is symmetrically connect with the both ends of the rear mold rear side.

4. injection mold according to claim 3, which is characterized in that the core model driving device includes one second cylinder, Second cylinder is fixedly arranged between two first cylinders, the push rod of the core model module pass through the rear mold module to Second cylinder extends, and second cylinder drives the push rod of the core model module to be moved forward and backward.

5. injection mold according to claim 1, which is characterized in that the preceding mould module includes that preceding die cap plate and preceding mould are recessed Mould, the preceding mould cavity plate are fixedly arranged on the pedestal, and the preceding die cap plate is separably set on the preceding mould cavity plate, the rear mold Module includes rear mold cover board and rear mold cavity plate, and the rear mold cavity plate is movably disposed in the two rear mold guide rails, the rear mold Cover board is separably set on the rear mold cavity plate.

6. injection mold according to claim 1, which is characterized in that it is sliding to be respectively provided with one on the inside of the two rear mold guide rails Two sides of rail, the rear mold module each extend over out a sliding block to two sliding rails, and the sliding block is movably disposed in the cunning In rail.

7. -6 any injection mold according to claim 1, which is characterized in that two lateral mass are pushed away by spring with described The scalable connection of bar, to allow two lateral mass close to or far from the push rod.

8. it is a kind of by plastic products out of injection mold release method, which comprises the following steps:

(1) the preceding mould module and rear mold module of moulded plastic products outer surface are separated so that the preceding mould module and it is described after Mould module is in the both ends of a through-hole on mold base；

(2) it is moved to the core model module of moulded plastic products inner surface above the through-hole, plastic products are with the core model mould Block is moved to above the through-hole；

(3) push rod of the core model module is moved forward relative to the sleeve of the core model module, so that can stretch with the push rod Two lateral mass of contracting connection and the core model module hinged with the sleeve are moved forward with the push rod, while two sides Block is shunk inwardly under the pulling of the sleeve；

(4) plastic products are separated with the core model module, are fallen from the through-hole.