CN101992540B - All Electric Blow Molding Machine - Google Patents

Abstract

The invention provides an all-electric hollow forming machine, comprising: a machine, a mold clamping device and a driving device. The mold clamping device comprises a first mold and a second mold which are arranged on the left and right sides, and two action arms which are respectively connected with the first mold and the second mold, and can be driven to switch between a mold closing position which enables the first mold and the second mold to be close to each other and a mold opening position which enables the first mold and the second mold to be far away from each other. The driving device comprises a power mechanism and a swing arm mechanism connected with the power mechanism and the action arm, and the swing arm mechanism is driven by the power of the power mechanism to drive the action arm to swing in a pivot manner, so as to drive the first die and the second die to approach or depart from each other. The two dies can be driven to move, so that uniform die closing force can be provided, and the precision of the formed container is improved.

Description

All Electric Blow Molding Machine

technical field

The invention relates to a molding machine, in particular to an all-electric hollow molding machine for molding hollow containers.

Background technique

In the past, when the hollow molding machine was closing or opening the mold, it used oil pressure to drive one mold to move relative to the other fixed mold to achieve the effect of closing or opening the mold. There are many roads, and the volume of oil pressure related equipment is large, and it is easy to pollute the machine due to oil leakage. Therefore, most of the molding machines have been converted to electronically controlled molding machines.

For example, in the all-electric blow molding machine patented in Japan No. JP2004-255598, the left mold is fixed. When controlling the closing or opening of the mold, only the right mold is driven towards the left mold to close the mold, or the left mold is driven to close the mold. The right mold is opened far away from the left mold, that is to say, the above-mentioned design achieves the functions of mold closing and mold opening through the movement of a single mold. However, only a single mold is driven to move and the mold is closed, so that the joint force of the closed mold is only provided by a single mold. The fixed mold must bear the joint impulse of the moving mold. Although the fixed mold is fixed at a predetermined position, when bearing the joint impulse, It will still be slightly offset due to passive force, so the center position of the two molds will also be offset after joining, which will affect the accuracy of the formed hollow container.

Contents of the invention

The object of the present invention is to provide an all-electric hollow molding machine which can simultaneously drive two molds close to each other or away from each other, with uniform mold closing force and high molding precision.

The all-electric hollow molding machine of the present invention includes: a machine table, a mold clamping device and a driving device.

The mold clamping device is assembled on the machine platform, and includes a first mold and a second mold arranged on the left and right, and two left and right spaced action arms respectively connected to the first mold and the second mold. The action arm can be driven to drive the first mold and the second mold to move between a closed mold position close to each other and a mold open position far away from each other.

The driving device is assembled on the machine platform, and includes a power mechanism and a swing arm mechanism connecting the power mechanism and the action arm. The power mechanism includes a power source and an adjustment base that can be driven by the power source to move left and right relative to the machine table. The swing arm mechanism includes a swing arm, a first link unit connected with the swing arm and linked with one of the action arms to swing, and a second link unit connected with the swing arm and linked with the swing of the other action arm. The swing arm includes a first pivot that is pivotally connected to the power mechanism and a second pivot that is oppositely spaced from the first pivot, and the first link unit includes a first pivot that is connected to the swing arm a pivoted first end and a second end closer to the one of the action arms relative to the first end, the second link unit includes a third end pivoted to the second pivot of the swing arm and A fourth end closer to the other action arm than the third end.

The swing arm can be driven to swing by the left and right movement of the adjustment seat, and then drive the first link unit and the second link unit to drive the action arm to swing at the same time, and link the first mold, The second molds are close to each other or far away from each other.

In the all-electric hollow molding machine of the present invention, the power mechanism also includes a screw that can be driven by the power source to rotate around its own axis in situ. Rotation acts to move left and right relative to the screw rod and drives the swing arm to pivot.

In the all-electric hollow molding machine of the present invention, the adjustment seat includes an adjustment seat pivot portion, and the power mechanism further includes a pivot plate, and the pivot plate includes a first plate pivotally connected to the adjustment seat pivot portion portion and a second plate portion spaced opposite to the first plate portion and pivotally connected to the first pivot portion of the swing arm.

In the all-electric hollow molding machine of the present invention, the swing arm further includes a swing arm fulcrum portion located between the first pivot portion and the second pivot portion, and the swing arm passes through the swing arm The axis of the fulcrum part swings as the pivot center axis, and the action arms of the mold clamping device all include a mold connection part and an action part spaced in reverse and a mold connection part and the action part between the The fulcrum part, the action arms all swing with an axis passing through the fulcrum part of the action arm as the pivot center axis, and the mold connection part of one of the action arms is connected to the first mold, and one of the action arms The action part of the arm is closer to the second end of the first link unit relative to the corresponding mold connection part, the mold connection part of the other action arm is connected to the second mold, and the action part of the other action arm is relatively corresponding The mold connecting part is closer to the fourth end of the second link unit; when the mold clamping device is at the mold opening position, the second end and the fourth end are close to each other, and the two action arms The action parts are also close to each other, and the mold connection parts of the action arms are far away from each other so that the first mold and the second mold are far away from each other; when the clamping device is at the mold closing position, the second end and the second end The fourth ends are far away from each other, the action parts of the two action arms are also far away from each other, and the mold connection parts of the action arms are close to each other so that the first mold and the second mold are close to each other.

In the all-electric blow molding machine of the present invention, the driving device further includes two sliding seats arranged left and right and capable of sliding left and right relative to the machine table, one of the sliding seats is connected with the first connecting rod unit and one of the The action part of the action arm is pivotally connected, and the other sliding seat is pivotally connected with the second link unit and the action part of the other action arm.

In the all-electric hollow molding machine of the present invention, the driving device further includes a plurality of rails fixedly arranged on the machine table and used for the embedded combination of the sliding seat to guide the moving stroke of the sliding seat.

The all-electric hollow molding machine according to the present invention, the machine table includes a base and two swing arm mounting plates fixedly arranged on the base at intervals front and back and each having a first mounting portion, the aforementioned swing arm fulcrum is located at The swing arm mounting plates are pivotally connected to the first mounting portion.

The all-electric hollow molding machine of the present invention, the machine table also includes a mold mounting seat located above the base, and the mold mounting seat includes two left and right intervals and are pivotally connected to the fulcrum of the action arm respectively. Second installation department.

The beneficial effect of the present invention is that: both the first mold and the second mold group can be moved left and right driven by the driving device, which can provide uniform mold closing force and improve the precision of forming the container.

Description of drawings

Fig. 1 is the front view of the preferred embodiment of the all-electric blow molding machine of the present invention, showing simultaneously that a clamping device of the all-electric blow molding machine is located at a mold opening position;

Fig. 2 is a three-dimensional assembled view of some elements of the preferred embodiment;

Figure 3 is an exploded perspective view of some components of the preferred embodiment;

Figure 4 is a front view similar to Figure 1, showing the mold clamping device in a closed mold position.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1, Fig. 2, Fig. 3, the preferred embodiment of the all-electric hollow molding machine of the present invention is used to form a hollow container, and includes: a machine platform 1, a mold clamping device 2, a driving device 3 and A mold thickness adjusting device 4 .

The machine table 1 includes a base 11 of a base structure extending left and right, two swing arm mounting plates 12 fixed on the base 11 at intervals front and rear, a mold mounting seat 13 above the base 11 and multiple A mold rail 14 (only one mold rail 14 is shown in FIG. 1 ) is arranged at intervals on the top surface of the mold mounting seat 13 . The swing arm mounting plate 12 has a first mounting portion 121 , and the mold mounting seat 13 includes two second mounting portions 131 spaced left and right.

The mold clamping device 2 includes: a first mold 21 and a second mold 22 assembled on the mold mounting base 13 and two action arms 23 connected to the first mold 21 and the second mold 22 respectively. Wherein, both the first mold 21 and the second mold 22 are embedded on the mold rail 14, and can slide left and right relative to the mold mounting seat 13 along the mold rail 14, and the first mold 21. The second mold 22 can be joined to the left and right sides, and further cooperate to define a molding space for molding a hollow container (not shown in the figure). The action arms 23 all include a mold connection part 231 connected to the first mold 21 or the second mold 22, an action part 232 spaced opposite to the mold connection part 231, and an action part 232 located between the mold connection part 231 and the action arm. The fulcrum portions 233 between the portions 232 are pivotally connected to the second mounting portion 131 of the mold mounting seat 13 respectively.

The driving device 3 includes: a power mechanism 5, a swing arm mechanism 6, a plurality of rails 31 fixed on the base 11 and extending left and right, and two rails 31 spaced from each other left and right and embedded on the rails 31. A sliding seat 32 that can slide left and right relative to the rail bar 31. The power mechanism 5 includes a power source 51, a coupling 52, a screw 53, a fixed seat 54 fixed on the top surface of the base 11, and an adjustment seat 55 that can move left and right relative to the base 11 and the screw 53. and a pivot plate 56 .

The power source 51 can be driven by electricity, and can be a servo motor controlled by a digital signal, but the implementation is not limited thereto. The coupling 52 connects a power shaft 511 of the power source 51 and the screw 53 , so that the rotational power output by the power source 51 is transmitted to the screw 53 . The screw 53 is a ball screw, and extends from the position of the coupling 52 toward the fixing seat 54 and passes through to the left. The screw 53 can be driven by the power source 51 to rotate around its own axis. The shape of the adjustment seat 55 is a hollow cuboid structure, and the cross-section of its internal channel is circular. The adjustment seat 55 includes a peripheral wall 551 screwed and coated on the outer periphery of the screw rod 53. The peripheral wall 551 has a left side and a The adjustment seat pivot portion 552 away from the power source 51 is composed of two protruding wall portions separated from each other. The adjustment seat 55 can be driven by the rotation of the screw rod 53 to move left and right. The pivot plate 56 includes a first plate portion 561 that is pivotally connected with the adjustment seat pivot portion 552 of the adjustment seat 55 and a second plate portion 561 that is oppositely spaced from the first plate portion 561 and that is pivotally connected with the swing arm mechanism 6 . plate portion 562 .

The swing arm mechanism 6 includes a swing arm 61 , a first link unit 62 and a second link unit 63 . Wherein, the swing arm 61 includes a first pivot portion 611 for the second plate portion 562 of the pivot plate 56 to extend into the pivot joint, a second pivot portion 612 oppositely spaced from the first pivot portion 611, and a The swing arm fulcrum portion 613 located between the first pivot portion 611 and the second pivot portion 612, the swing arm fulcrum portion 613 is located between the two swing arm mounting plates 12 spaced front and rear, and is connected to the first pivot portion 613. A mounting portion 121 is pivotally connected.

The first connecting rod unit 62 includes two first connecting rods 621 spaced front and rear. A first end 622 pivotally connected to the part 611 and a second end 623 pivotally connected to the left sliding seat 32 . The second linkage unit 63 includes two second linkages 631 spaced front and rear. After the second linkages 631 are connected, the second linkage unit 63 together defines a second pivot with the swing arm 61 A third end 632 pivotally connected to the part 612 and a fourth end 633 pivotally connected to the right sliding seat 32 and the right action arm 23 .

The sliding seat 32 slides left and right along the rails 31, and has the function of guiding the moving strokes of the first link unit 62, the second link unit 63 and the action arm 23, and the left sliding seat 32 except In addition to being pivotally connected to the second end 623 of the first link unit 62 , its left side is also pivotally connected to the moving portion 232 of the left moving arm 23 . During implementation, the design of the first link unit 62, the left side sliding seat 32, and the left side action arm 23 can also be the same as the right side structural design of the right side slide seat 32, so that the first link unit 62 of the first link unit 62 The two ends 623, the left sliding seat 32, and the actuating part 232 of the left actuating arm 23 are pivotally connected to the same position.

The mold thickness adjusting device 4 includes a reduction motor 41, an adjusting mechanism 42 and other structures, through which the mold thickness adjusting device 4 can change the size of the molding space defined after the first mold 21 and the second mold 22 are docked to change The size of the molded hollow container will not be described in detail because the mold thickness adjusting device 4 is not the focus of improvement of the present invention.

Referring to Fig. 1, Fig. 2 and Fig. 4, the mold clamping device 2 can be driven by the driving device 3 to switch between a mold opening position as shown in Fig. 1 and a mold closing position as shown in Fig. 4 . When the mold clamping device 2 is at the mold opening position, the first mold 21 and the second mold 22 are far away from each other and do not close together, the adjustment seat 55 is adjacent to the position of the power source 51, the swing arm mechanism 6 The swing arm 61 and the first link unit 62 and the second link unit 63 are not completely extended laterally, the swing arm 61 is slightly inclined up and down, the first pivot 611 is located below, and the second pivot 612 Located at the top, so that the first link unit 62 and the second link unit 63 connected to it both present an oblique extension with high left and low right, so the second end 623 of the first link unit 62 and the second link unit The fourth ends 633 of 63 are close to each other, so that the action parts 232 of the two action arms 23 connected to the swing arm mechanism 6 are also close to each other, and the mold connecting parts 231 are far away from each other, so that the first mold 21 and the second mold 21 are connected to each other. The dies 22 are also remote from each other.

When the power source 51 drives the screw 53 to rotate in a first direction, it will drive the adjustment seat 55 to move away from the power source 51. When the adjustment seat 55 moves, it is driven by the pivot plate 56 to push the adjustment seat 55. The swing arm 61 pivots toward a mold closing direction 71 with an axis passing through the swing arm fulcrum 613 as the pivot center axis, and the pivoting process of the swing arm 61 drives the first link unit 62 and the second link unit The unit 63 is deployed away from both sides, so that the second end 623 of the first link unit 62 and the fourth end 633 of the second link unit 63 are away from each other, and the sliding seat 32 moves along the rail 31 at the same time. Slide away from each other, and then push the action parts 232 of the two action arms 23 away from each other, so that the action arm 23 pivots with an axis passing through the fulcrum part 233 as the pivot center axis, and the mold connecting parts 231 above it are thus close to each other , make the first mold 21 and the second mold 22 approach each other gradually, and finally move to the closed mold position in FIG. 4 . When located at the mold closing position, the swing arm 61 is horizontal, the first pivot 611 of the swing arm 61 is on the left side, the second pivot 612 is on the right side, and the first link unit 62 and the second The link unit 63 also extends horizontally.

When the power source 51 drives the screw rod 53 to rotate in reverse, it will drive the adjustment seat 55 to move toward the direction close to the power source 51, and the swing arm 61 can be pulled to pivot toward a mold opening direction 72 through the pivot plate 56 , and then drive the first link unit 62 and the second link unit 63 to approach each other, and the sliding seats 32 on the left and right sides also approach each other, and drive the mold clamping device 2 back to the mold opening position in FIG. 1 .

In summary, the driving device 3 is connected to the two action arms 23 at the same time, so as to drive the action arm 23 to drive the first mold 21 and the second mold 22 to approach or move away from each other, so as to achieve the purpose of mold closing and mold opening , and the first mold 21 and the second mold 22 move close at the same time to join the closed mold, the joining force is provided by the first mold 21 and the second mold 22 simultaneously and uniformly, so after the first mold 21 and the second mold 22 are joined The central position of the hollow container can be accurately controlled at the original predetermined position, so that the subsequent molded hollow container has extremely high precision, and the purpose of the present invention can indeed be achieved.

Claims (8)

1. all-electrical hollow molding machine comprises: a board and be assembled in a clamping die device and a drive unit on this board, and first mould and second mould of arranging about this clamping die device comprises is characterized in that,

This clamping die device also comprise two between left and right every and connect respectively the movement arm of described the first mould and described the second mould, described movement arm can be driven and drive described the first mould and described the second mould a mold closing position adjacent to each other and one mutual away from die sinking position between movement;

This drive unit comprises an actuating unit and an oscillating arm mechanisms that connects this actuating unit and described movement arm, this actuating unit comprises that a power source and one are driven by this power source and the relative adjusting seat of this board move left and right, this oscillating arm mechanisms comprises a swing arm, one connects first connecting rod unit and second connecting rod unit that connects another movement arm swing of this swing arm linkage that one of them movement arm of this swing arm linkage swings, this swing arm comprises the second pivot section of first a pivot section that articulates with this actuating unit and and this first pivot section back span, this first connecting rod unit comprises a first end that articulates with the first pivot section of this swing arm and the second end of more contiguous described one of them movement arm of relative this first end, this second connecting rod unit comprise one with the 3rd end of the second pivot section pivot joint of this swing arm and the 4th end of more contiguous described another movement arm of relative the 3rd end; This swing arm can be subjected to the move left and right of this adjusting seat and driven swing, and then drive described first connecting rod unit and described second connecting rod unit and drive respectively described movement arm and swing simultaneously, and link described the first mould and described the second mould is adjacent to each other or mutually away from.

2. all-electrical hollow molding machine according to claim 1, it is characterized in that, this actuating unit also comprises a screw rod that driven by this power source and rotate around self axis in the original place, aforementioned adjusting seat is screwed onto the periphery of this screw rod, and is subjected to the rotary action of this screw rod and relative this screw rod move left and right and drive described swing arm pivot and put.

3. all-electrical hollow molding machine according to claim 2, it is characterized in that, this adjusting seat comprises an adjusting seat pivot section, this actuating unit also comprises a slice pivot connecting plate, this pivot connecting plate comprise first board that articulates with this adjusting seat pivot section and one and this first board back span and with the second board of the first pivot section pivot joint of this swing arm.

4. all-electrical hollow molding machine according to claim 1, it is characterized in that, this swing arm also comprises a swing arm fulcrum between described the first pivot section and described the second pivot section, described swing arm swings take an axis by this swing arm fulcrum as pivot center of oscillation axis, the movement arm of described clamping die device all comprises mould connecting portion and an operating member and fulcrum between described mould connecting portion and described operating member of back span, described movement arm all swings take an axis by the fulcrum of described movement arm as pivot center of oscillation axis, and the mould connecting portion of described one of them movement arm connects this first mould, the operating member of described one of them movement arm is the second end of corresponding more contiguous this first connecting rod unit of mould connecting portion relatively, the mould connecting portion of described another movement arm connects this second mould, and the operating member of described another movement arm is the 4th end of corresponding more contiguous this second connecting rod unit of mould connecting portion relatively; When this clamping die device is positioned at this die sinking position, described the second end and described the 4th end are adjacent to each other, the operating member of described two movement arms is also adjacent to each other, the mould connecting portion of described movement arm mutually away from and make described the first mould and described the second mould mutually away from; When this clamping die device is positioned at this mold closing position, described the second end and described the 4th end mutually away from, the operating member of described two movement arms is also adjacent to each other away from, the mould connecting portion of described movement arm and make described the first mould and described the second mould adjacent to each other mutually.

5. all-electrical hollow molding machine according to claim 4, it is characterized in that, this drive unit also comprises about two and to arrange and the relative slide of this board left and right sides slippage, the operating member of one of them slide and this first connecting rod unit and described one of them movement arm articulates, and the operating member of another slide and this second connecting rod unit and described another movement arm articulates.

6. all-electrical hollow molding machine according to claim 5 is characterized in that, this drive unit also comprise a plurality of be fixedly installed on this board and for described slide setting-in in conjunction with the rail bar with the shift motion that guides described slide.

7. all-electrical hollow molding machine according to claim 4, it is characterized in that, this board comprises that compartment of terrain before and after a base and two is fixedly installed on this base and all has the swing arm installing plate of first installation portion, and aforementioned swing arm fulcrum location articulates between described swing arm installing plate and with described the first installation portion.

8. all-electrical hollow molding machine according to claim 7, it is characterized in that, this board also comprises a die setting base that is positioned at the top of this base, this die setting base comprise two between left and right every and the second installation portion of articulating with the fulcrum of described movement arm respectively.

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