CN110696331A

CN110696331A - Adjustable mold for blow molding

Info

Publication number: CN110696331A
Application number: CN201911024824.1A
Authority: CN
Inventors: 郑炅鑫
Original assignee: Shengzhou Yueming Mould Technology Co Ltd
Current assignee: Jiangsu Kerui Plastic Industry Co., Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-01-17
Anticipated expiration: 2039-10-25
Also published as: JP6821111B1; CN110696331B; JP2021066170A

Abstract

The invention discloses an adjustable mould for blow molding, which comprises a fixed mould and a sliding mould, wherein the sliding mould is slidably positioned on the right side of the fixed mould, a stepping motor is fixedly arranged in the fixed mould, the right end of the stepping motor is in power connection with a screw rod, a connecting hole with a leftward opening is formed in the sliding mould, and the right end of the screw rod extends into the connecting hole and is in threaded connection with the sliding mould.

Description

Adjustable mold for blow molding

Technical Field

The invention relates to the field of molds, in particular to an adjustable mold for blow molding.

Background

The mould is used in industrial production to get various moulds and tools of the required products by injection moulding, blow moulding, extrusion, die casting or forging forming, smelting, stamping, etc., in short, the mould is used for making the tool of the shaped article, blow moulding is also called hollow blow moulding, which is a common plastic processing method, the mould used in the existing blow moulding is fixed in shape, and can only be used for producing plastic products of one shape, when plastic products of other shapes need to be produced, the mould needs to be replaced, thus improving the production cost, and the mould replacement takes long time and has low production efficiency, the invention provides an adjustable mould for blow moulding, which can solve the problems, the invention can change the shape of the inner wall of the cavity formed by blow moulding according to the shape of the produced plastic products, and does not need to replace the mould when producing different plastic products, the production cost is saved, and the production efficiency is improved.

Disclosure of Invention

The technical problem is as follows:

when plastic products in different shapes are produced, the mold needs to be replaced, so that the production cost is improved, and the production efficiency is reduced.

In order to solve the problems, the embodiment designs an adjustable mold for blow molding, the adjustable mold for blow molding of the embodiment comprises a fixed mold and a sliding mold, the sliding mold is slidably positioned on the right side of the fixed mold, a stepping motor is fixedly arranged in the fixed mold, the right end of the stepping motor is in power connection with a screw rod, a connecting hole with a left opening is arranged in the sliding mold, the right end of the screw rod extends into the connecting hole and is in threaded connection with the sliding mold, a fixed molding cavity with a right opening is arranged in the fixed mold, a movable molding cavity with a left opening is arranged in the sliding mold, fixed blocks are fixedly connected to the upper ends of the fixed mold and the sliding mold, a tapered hole is vertically communicated in the fixed molding cavity, and the tapered hole is downwards communicated with the fixed molding cavity and the movable molding cavity, starting the stepping motor, further driving the sliding mold to slide leftwards until the sliding mold is abutted against the fixed mold through the screw rod, at the moment, communicating and sealing the fixed molding cavity and the movable molding cavity, blowing plastic into the fixed molding cavity and the movable molding cavity through the conical hole, enabling the plastic to be attached to the inner walls of the fixed molding cavity and the movable molding cavity, fixedly arranging an air pump in the inner walls of the lower sides of the fixed molding cavity and the movable molding cavity, starting the air pump after blowing plastic into the fixed molding cavity and the movable molding cavity, further blowing cold air into the fixed molding cavity and the movable molding cavity, accelerating the molding of the plastic, arranging a molding device in the inner walls of the fixed molding cavity and the movable molding cavity, attaching the plastic in the fixed molding cavity and the movable molding cavity to the surface of an elastic plate in the molding device, the elastic plate has certain elasticity, one side of the molding device, which is far away from the symmetric center, is connected with an adjusting device, one side of the adjusting device, which is far away from the symmetric center, is connected with a driving device, the driving device is started, the adjusting device is further driven, the surface shape of the elastic plate is further changed according to the shape of a product, and then the shape of the plastic molding in the fixed molding cavity and the movable molding cavity can be changed. Beneficially, the driving device comprises a gear cavity which is bilaterally symmetrical and is respectively arranged in the fixed die and the sliding die, a driving gear is rotatably arranged in the gear cavity, a motor shaft is fixedly connected in the driving gear, a driving motor is fixedly arranged in the inner wall of one side of the gear cavity, which is far away from the symmetry center, one end of the motor shaft, which is far away from the symmetry center, is in power connection with the driving motor, one end of the motor shaft, which is close to the symmetry center, is in connection with the adjusting device, driven gears are symmetrically arranged at the front end and the rear end of the driving gear and are meshed with each other, a fixed shaft is fixedly connected at one end of the driven gears, which is far away from the symmetry center, is rotatably provided with a driving pulley, the driving pulley is fixedly connected to the fixed shaft, belt grooves are, the driving belt wheel with be connected with the connecting band between the driven pulleys, link firmly the connecting axle in the driven pulleys, the connecting axle is close to centre of symmetry one end connect in adjusting device starts driving motor, and then passes through the motor shaft drive adjusting device, simultaneously the motor shaft drives the driving gear rotates, and then drives driven gear rotates, and then passes through the fixed axle drives driving belt wheel rotates, and then passes through the connecting band drives driven pulleys rotates, and then passes through the connecting axle drive adjusting device.

Beneficially, the adjusting device comprises three transmission cavities arranged in the inner wall of one side of the gear cavity close to the symmetry center, three chain wheels are rotatably arranged in the transmission cavities, a chain is connected among the three chain wheels, one end of the motor shaft and one end of the limiting hole close to the symmetry center respectively extend into the three transmission cavities and are fixedly connected with the chain wheels in the middle, meshing holes with openings facing the fixed forming cavities and the movable forming cavities are formed in the chain wheels, sliding wheels are rotatably and slidably arranged on one sides of the chain wheels close to the fixed forming cavities and the movable forming cavities, the sliding wheels can slide into the meshing holes and are connected with the chain wheels, screw rods are connected with the sliding wheels through splines in the sliding wheels, one ends of the screw rods close to the fixed forming cavities and the movable forming cavities are connected with the molding device, and the motor shaft and the connecting shaft rotate and drive the chain wheels in the middle to, and the other chain wheels are driven to rotate by the chain, when the sliding wheel slides into the meshing hole and is connected with the chain wheel, the chain wheel rotates and drives the meshing hole to rotate, and then the molding device is driven by the screw rod.

Preferably, an electromagnetic spring is fixedly connected between one end of the sliding wheel, which is close to the fixed forming cavity and the movable forming cavity, and the screw rod, and is electrified, so that the sliding wheel can be pushed to slide into the meshing hole to be connected with the chain wheel.

Beneficially, the molding device includes symmetrical and communicating cavities that are arranged in the fixed molding cavity and the movable molding cavity, the elastic plate is fixedly arranged in the communicating cavity, the communicating cavity is far away from the fixed molding cavity, nine connecting rods are fixedly connected with one end of the movable molding cavity, threaded holes that are provided with openings and deviated from the fixed molding cavity and the movable molding cavity are formed in the connecting rods, the screw rod is close to the fixed molding cavity, one end of the movable molding cavity extends into the threaded holes respectively and is in threaded connection with the connecting rods, the screw rod rotates and drives the connecting rods to slide, and then the elastic plate is pushed and deformed.

Preferably, the communicating cavity is far away from the fixed forming cavity and is communicated with the inner wall of one side of the movable forming cavity to form nine limiting holes, the connecting rod can slide into the limiting holes, the limiting holes limit the sliding of the connecting rod, and the elastic plate is prevented from being deformed too much.

The invention has the beneficial effects that: the invention can change the shape of the inner wall of the cavity formed by blow molding in the mold according to the shape of the produced plastic product, does not need to replace the mold when producing different plastic products, saves the production cost and improves the production efficiency.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of an adjustable mold for blow molding according to the present invention;

FIG. 2 is an enlarged schematic view of "A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an adjustable mould for blow moulding, which is mainly applied to producing blow moulded plastic products, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to an adjustable die for blow molding, which comprises a fixed die 11 and a sliding die 18, wherein the sliding die 18 is slidably positioned at the right side of the fixed die 11, a stepping motor 12 is fixedly arranged in the fixed die 11, the right end of the stepping motor 12 is in power connection with a screw rod 13, a connecting hole 17 with a left opening is arranged in the sliding die 18, the right end of the screw rod 13 extends into the connecting hole 17 and is in threaded connection with the sliding die 18, a fixed molding cavity 14 with a right opening is arranged in the fixed die 11, a movable molding cavity 19 with a left opening is arranged in the sliding die 18, the upper ends of the fixed die 11 and the sliding die 18 are fixedly connected with a fixed block 21, a tapered hole 20 is vertically communicated in the fixed block 21, and the tapered hole 20 is downwards communicated with the fixed molding cavity 14 and the movable molding cavity 19, starting the stepping motor 12, further driving the sliding mold 18 to slide leftwards through the screw rod 13 until the sliding mold abuts against the fixed mold 11, at this time, the fixed molding cavity 14 is communicated with and sealed with the movable molding cavity 19, at this time, plastics can be blown into the fixed molding cavity 14 and the movable molding cavity 19 through the tapered hole 20, so that the plastics are attached to the inner walls of the fixed molding cavity 14 and the movable molding cavity 19, an air pump 15 is fixedly arranged in the inner walls of the lower sides of the fixed molding cavity 14 and the movable molding cavity 19, after the plastics are blown into the fixed molding cavity 14 and the movable molding cavity 19, the air pump 15 is started, further cold air can be blown into the fixed molding cavity 14 and the movable molding cavity 19, so as to accelerate the molding of the plastics, and a molding device 101 is arranged in the inner walls of the fixed molding cavity 14 and the movable molding cavity 19, the fixed forming cavity 14 and the movable forming cavity 19 are attached to the surface of an elastic plate 36 in the forming device 101, the elastic plate 36 has certain elasticity, one side, away from the symmetry center, of the forming device 101 is connected with an adjusting device 102, one side, away from the symmetry center, of the adjusting device 102 is connected with a driving device 100, the driving device 100 is started, the adjusting device 102 is driven, the surface shape of the elastic plate 36 is changed according to the shape of a product, and the shape of the plastic forming in the fixed forming cavity 14 and the movable forming cavity 19 can be changed.

According to the embodiment, the driving device 100 is described in detail below, the driving device 100 includes a left-right symmetrical gear cavity 27 respectively disposed in the fixed mold 11 and the sliding mold 18, a driving gear 23 is rotatably disposed in the gear cavity 27, a motor shaft 24 is fixedly connected to the driving gear 23, a driving motor 25 is fixedly disposed in an inner wall of the gear cavity 27 away from one side of the symmetry center, one end of the motor shaft 24 away from the symmetry center is connected to the driving motor 25, one end of the motor shaft 24 close to the symmetry center is connected to the adjusting device 102, two ends of the driving gear 23 are symmetrically and engaged with each other and are provided with a driven gear 22, one end of the driven gear 22 away from the symmetry center is fixedly connected to a fixed shaft 41, one end of the driven gear 22 away from the symmetry center is rotatably provided with a driving pulley 40, and the driving pulley 40 is fixedly connected, the belt groove 42 that is equipped with of symmetry and being linked together in the inner wall of both sides around gear chamber 27, the rotatable driven pulleys 44 that is equipped with in belt groove 42, driving pulley 40 with be connected with connecting band 26 between the driven pulleys 44, driven pulleys 44 link firmly connecting axle 43, connecting axle 43 be close to centre of symmetry one end connect in adjusting device 102, start driving motor 25, and then pass through motor shaft 24 drive adjusting device 102, simultaneously motor shaft 24 drives driving gear 23 rotates, and then drives driven gear 22 rotates, and then passes through fixed axle 41 drives driving pulley 40 rotates, and then passes through connecting band 26 drives driven pulleys 44 rotates, and then passes through connecting axle 43 drive adjusting device 102.

According to the embodiment, the adjusting device 102 is described in detail below, the adjusting device 102 includes three transmission cavities 28 disposed in an inner wall of one side of the gear cavity 27 close to the symmetry center, three chain wheels 29 are rotatably disposed in the transmission cavities 28, a chain 31 is connected between the three chain wheels 29, one ends of the motor shaft 24 and the limiting hole 34 close to the symmetry center respectively extend into the three transmission cavities 28 and are fixedly connected to the middle chain wheel 29, an engaging hole 30 with an opening facing the fixed forming cavity 14 and the movable forming cavity 19 is disposed in the chain wheel 29, a sliding wheel 32 is rotatably and slidably disposed on one side of the chain wheel 29 close to the fixed forming cavity 14 and the movable forming cavity 19, the sliding wheel 32 can slide into the engaging hole 30 and is connected with the chain wheel 29, a screw 39 is splined in the sliding wheel 32, one end of the screw 39 close to the fixed molding cavity 14 and one end of the movable molding cavity 19 are connected to the molding device 101, the motor shaft 24 and the connecting shaft 43 rotate and drive the middle sprocket 29 to rotate, and further drive the other sprockets 29 to rotate through the chain 31, when the sliding wheel 32 slides into the meshing hole 30 and is connected with the sprocket 29, the sprocket 29 rotates and drives the meshing hole 30 to rotate, and further drive the molding device 101 through the screw 39.

Advantageously, an electromagnetic spring 33 is fixedly connected between the end of the sliding wheel 32 close to the fixed forming cavity 14 and the movable forming cavity 19 and the screw 39, and the electromagnetic spring 33 is electrified so as to push the sliding wheel 32 to slide into the engaging hole 30 to be connected with the chain wheel 29.

According to an embodiment, the following description is made in detail on the molding device 101, the molding device 101 includes a communicating cavity 37 symmetrically and communicated with each other and disposed in the fixed molding cavity 14 and the inner wall of the movable molding cavity 19, the elastic plate 36 is fixedly disposed in the communicating cavity 37, the communicating cavity 37 is far away from the fixed molding cavity 14 and one end of the movable molding cavity 19 is fixedly connected with nine connecting rods 38, a threaded hole 35 with an opening deviating from the fixed molding cavity 14 and the movable molding cavity 19 is formed in each connecting rod 38, one end of each of the screw rods 39 close to the fixed molding cavity 14 and the movable molding cavity 19 extends into the threaded hole 35 and is in threaded connection with the corresponding connecting rod 38, and the screw rods 39 rotate and drive the corresponding connecting rods 38 to slide, so as to push the elastic plate 36 and deform the elastic plate 36.

Advantageously, nine limiting holes 34 are formed in the inner wall of the communication cavity 37, which is far away from the fixed forming cavity 14 and is communicated with the inner wall of the movable forming cavity 19, the connecting rod 38 can slide into the limiting holes 34, and the limiting holes 34 limit the sliding of the connecting rod 38, so that the elastic plate 36 is prevented from being deformed too much.

The following describes in detail the use steps of an adjustable mold for blow molding according to the present disclosure with reference to fig. 1 to 4:

initially, the fixed mold 11 and the sliding mold 18 are far away from each other, the elastic plate 36 is in a normal state, the connecting rod 38 extends into the limiting hole 34, the electromagnetic spring 33 is not electrified, and the sliding wheel 32 and the chain wheel 29 are not connected.

When the device is used, the stepping motor 12 is started, the sliding die 18 is driven to slide leftwards through the screw rod 13 until the sliding die 18 is contacted with the fixed die 11, the fixed forming cavity 14 is communicated with and sealed from the movable forming cavity 19, the corresponding electromagnetic spring 33 is electrified according to the shape of a product to be produced, the sliding wheel 32 is pushed to slide into the meshing hole 30 and is connected with the chain wheel 29, the driving motor 25 is started, the driving gear 23 is driven to rotate through the motor shaft 24, the driven gear 22 is driven to rotate, the driving belt wheel 40 is driven to rotate through the fixed shaft 41, the driven belt wheel 44 is driven to rotate through the connecting belt 26, the middle chain wheel 29 is driven to rotate through the connecting shaft 43 and the motor shaft 24, other chain wheels 29 are driven to rotate through the chain 31, and the sliding wheel 32 connected with the chain wheel 29 is driven to rotate, the sliding wheel 32 which is not connected with the chain wheel 29 does not rotate, and then the sliding wheel 32 rotates and drives the connecting rod 38 to slide through the screw 39, and then the elastic plate 36 is pushed to deform until the surface shape of the elastic plate 36 is the same as the shape of a product to be produced, at this time, the driving motor 25 is stopped and the electromagnetic spring 33 is powered off, and at this time, the sliding wheel 32 is disconnected with the chain wheel 29.

At this moment, plastics are blown into the fixed forming cavity 14 and the movable forming cavity 19 through the taper hole 20, so that the plastics are attached to the surface of the elastic plate 36, the air pump 15 is started simultaneously, cold air is blown into the fixed forming cavity 14 and the movable forming cavity 19, the forming of the plastics on the surface of the elastic plate 36 is accelerated, the air pump 15 is stopped after the plastic forming is completed, the stepping motor 12 is reversely started at the moment, the sliding die 18 is driven to slide rightwards through the screw rod 13, the fixed forming cavity 14 and the movable forming cavity 19 are opened at the moment, a plastic product can be taken out at the moment, and the device needs to be restored to an initial state at the moment.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. An adjustable mould for blow molding, which comprises a fixed mould and a sliding mould, wherein the sliding mould is slidably positioned on the right side of the fixed mould, and is characterized in that: a stepping motor is fixedly arranged in the fixed die, the right end of the stepping motor is in power connection with a screw rod, a connecting hole with a leftward opening is formed in the sliding die, and the right end of the screw rod extends into the connecting hole and is in threaded connection with the sliding die; a fixed forming cavity with a right opening is arranged in the fixed die, a movable forming cavity with a left opening is arranged in the sliding die, the upper ends of the fixed die and the sliding die are fixedly connected with fixed blocks, conical holes are formed in the fixed blocks in a vertically through mode, and the conical holes are communicated with the fixed forming cavity and the movable forming cavity downwards; starting the stepping motor, driving the sliding mold to slide leftwards through the screw rod until the sliding mold abuts against the fixed mold, communicating and sealing the fixed molding cavity and the movable molding cavity, and blowing plastics into the fixed molding cavity and the movable molding cavity through the conical holes to enable the plastics to be attached to the inner walls of the fixed molding cavity and the movable molding cavity; air pumps are fixedly arranged in the inner walls of the lower sides of the fixed forming cavity and the movable forming cavity, and when plastics are blown into the fixed forming cavity and the movable forming cavity, the air pumps are started, so that cold air can be blown into the fixed forming cavity and the movable forming cavity, and the forming of the plastics is accelerated; fixed shaping chamber and it moulds the type device to be equipped with in the removal shaping intracavity wall, fixed shaping chamber and remove the plastics of shaping intracavity paste in on the elastic sheet surface in the type device moulds, the elastic sheet has certain elasticity, it is connected with adjusting device to mould type device and keep away from symmetry center one side, adjusting device keeps away from symmetry center one side and is connected with drive arrangement, starts drive arrangement, and then drive adjusting device, and then the shape according to the product changes elastic sheet surface shape, and then can change fixed shaping chamber and remove the shaping shape of plastics in the shaping intracavity.

2. An adjustable mold for blow molding as defined in claim 1 wherein: the driving device comprises gear cavities which are bilaterally symmetrical and are respectively arranged in the fixed die and the sliding die, driving gears are rotatably arranged in the gear cavities, motor shafts are fixedly connected in the driving gears, a driving motor is fixedly arranged in the inner wall of one side of the gear cavity, which is far away from the symmetrical center, and one end of each motor shaft, which is far away from the symmetrical center, is in power connection with the driving motor; one end, close to the symmetry center, of the motor shaft is connected to the adjusting device, the front end and the rear end of the driving gear are symmetrically provided with driven gears in a meshed mode, one end, far away from the symmetry center, of each driven gear is fixedly connected with a fixed shaft, one end, far away from the symmetry center, of each driven gear is rotatably provided with a driving belt wheel, and the driving belt wheel is fixedly connected with the fixed shaft; the internal symmetry of both sides inner wall just is linked together around the gear chamber is equipped with the race, the rotatable driven pulleys that are equipped with in the race, driving pulley with be connected with the connecting band between the driven pulleys, the driven pulleys link firmly the connecting axle, the connecting axle is close to symmetry center one end connect in adjusting device.

3. An adjustable mold for blow molding as defined in claim 2 wherein: the adjusting device comprises three transmission cavities arranged in the inner wall of one side of the gear cavity close to the symmetric center, three chain wheels are rotatably arranged in the transmission cavities, and a chain is connected among the three chain wheels; the motor shaft and one end of the limiting hole close to the symmetrical center extend into the three transmission cavities respectively and are fixedly connected with the chain wheel in the middle; the chain wheel is internally provided with an engaging hole with an opening facing the fixed forming cavity and the movable forming cavity, one side of the chain wheel, which is close to the fixed forming cavity and the movable forming cavity, is rotatably and slidably provided with a sliding wheel, and the sliding wheel can slide into the engaging hole and is connected with the chain wheel; the internal spline of the sliding wheel is connected with a screw rod, and one end of the screw rod, which is close to the fixed forming cavity and the movable forming cavity, is connected with the molding device.

4. An adjustable mold for blow molding as defined in claim 3 wherein: the sliding wheel is close to the fixed forming cavity, one end of the movable forming cavity and the screw are fixedly connected with an electromagnetic spring which is electrified, and then the sliding wheel can be pushed to slide into the meshing hole to be connected with the chain wheel.

5. An adjustable mold for blow molding as defined in claim 3 wherein: mould type device including symmetry and be linked together locate fixed one-tenth die cavity and remove the intercommunication chamber in the shaping intracavity wall, the elastic plate set firmly in the intercommunication intracavity, the intercommunication chamber is kept away from fixed one-tenth die cavity with it has linked firmly nine connecting rods to remove one-tenth die cavity one end, be equipped with the opening in the connecting rod and deviate from fixed one-tenth die cavity with remove the screw hole in one-tenth die cavity, the screw rod is close to fixed one-tenth die cavity with it extends to respectively to remove one-tenth die cavity one end in the screw hole and with connecting rod threaded connection.

6. An adjustable mold for blow molding as defined in claim 5 wherein: the communicating cavity is far away from the fixed forming cavity and is communicated with the inner wall of one side of the movable forming cavity to form nine limiting holes, the connecting rod can slide into the limiting holes, the limiting holes limit the sliding of the connecting rod, and the elastic plate is prevented from being deformed too much.