CN114905711A

CN114905711A - Full-electric injection molding machine and control system thereof

Info

Publication number: CN114905711A
Application number: CN202210561083.6A
Authority: CN
Inventors: 武成晨; 冯志远; 陈剑波; 逄鹏博; 许航; 杨江泉; 易观泉
Original assignee: Foshan City Shunde District Zhende Precision Machinery Co ltd; Foshan Shunde Distr Chen De Plastics Machinery Co ltd; Chen Hsong Machinery Shenzhen Co ltd
Current assignee: Foshan City Shunde District Zhende Precision Machinery Co ltd; Foshan Shunde Distr Chen De Plastics Machinery Co ltd; Chen Hsong Machinery Shenzhen Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-08-16

Abstract

The application provides a full-electric injection molding machine and control system thereof includes: the head plate is fixedly installed; a second plate movably installed and configured to be able to approach or depart from the head plate; the tail plate is fixedly installed; the linear shifter comprises an axial fixed end and a moving end, the axial fixed end is fixed on the tail plate, and the moving end is configured to output linear reciprocating motion; the connector sets firmly in remove the end, the connector towards one side of axial stiff end is equipped with the buffer, follows remove the removal of end, the connector passes through the drive mechanism drive two boards remove. The full-electric injection molding machine provided by the scheme can avoid the damage of internal parts.

Description

Full-electric injection molding machine and control system thereof

Technical Field

The application relates to the technical field of injection molding machines, in particular to a full-electric injection molding machine and a control system of the full-electric injection molding machine.

Background

In the related art, an electric injection molding machine adopts a control system to open and close molds. In the case of failure or malfunction of the control system, more specifically, in the case of failure or malfunction of the displacement sensor of the control system, during the mold opening or closing stroke, parts inside the injection molding machine are likely to be bumped, resulting in damage to the injection molding machine.

Disclosure of Invention

One object of the present application is to propose an all-electric injection molding machine that can avoid internal part damage.

In order to solve the technical problem, the following technical scheme is adopted in the application:

the technical scheme of an aspect of this application provides a full-electric injection molding machine, includes:

a headboard fixedly installed;

a second plate movably installed and configured to be able to approach or depart from the head plate;

the tail plate is fixedly installed;

the linear shifter comprises an axial fixed end and a moving end, the axial fixed end is fixed on the tail plate, and the moving end is configured to output linear reciprocating motion;

the connector sets firmly in remove the end, the connector towards one side of axial stiff end is equipped with the buffer, follows remove the removal of end, the connector passes through the drive mechanism drive two boards remove.

According to some aspects of the present disclosure, the bumper is configured as a spring, a resilient pad, or a damper.

According to some technical scheme of this application, based on the buffer configuration is the condition of attenuator, the attenuator includes the cylinder body and the body of rod, the body of rod is movable insert locate the cylinder body, the cylinder body with one of the body of rod both is fixed in the connector, another unsettled in the axial stiff end with between the connector.

According to some technical schemes of this application, axial stiff end towards one side of connector is equipped with the arch, the arch is located on the removal route of attenuator.

According to some technical schemes of this application, the quantity of buffer has a plurality ofly, and is a plurality of the buffer distributes along the circumferencial direction in the connector.

According to some aspects of the present disclosure, the linear mover is a ball screw, the ball screw includes a screw rod and a nut, the nut is configured as the axially fixed end, the screw rod is configured as the movable end, the nut is sleeved on the screw rod, the nut is rotatably installed on the tail plate, and an end of the screw rod is fixed to the connector.

According to some technical solutions of the present application, the all-electric injection molding machine further includes a power source connected to the nut to drive the nut to rotate.

According to some technical scheme of this application, drive mechanism includes hinge pole subassembly and connection hinge pole, the one end of hinge pole subassembly articulate in two boards, the other end articulate in the tailboard, the one end of connecting the hinge pole articulate in the connector, the other end articulate in the hinge pole subassembly.

According to some aspects of the present disclosure, the hinge rod assembly includes a first hinge rod and a second hinge rod hinged to each other, the first hinge rod is hinged to the tail plate, the second hinge rod is hinged to the second plate, and the other end of the connecting hinge rod is hinged to the first hinge rod.

According to some technical scheme of this application, drive mechanism's quantity has two, two drive mechanism symmetric distribution in the connector.

The application also provides a control system of an all-electric injection molding machine, which comprises the all-electric injection molding machine as described in any one of the preceding items; the control device is electrically connected with a power source of the all-electric injection molding machine, the control device is configured to control the power source to work, when the control device receives a first signal, the control device controls the power source to decelerate, and the first signal is that the connector of the all-electric injection molding machine is contacted with the buffer.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural view of an all-electric injection molding machine according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a cross section of an all-electric injection molding machine according to an embodiment of the present application.

Fig. 3 is a schematic structural view in section of an all-electric injection molding machine shown in an embodiment of the present application (a head plate and a tail plate are omitted).

Fig. 4 is a schematic structural view of an all-electric injection molding machine in a cross-sectional view in an open mold state according to an embodiment of the present application.

Fig. 5 is a schematic structural view of an all-electric injection molding machine in a mold clamping state in section according to an embodiment of the present application.

Fig. 6 is a schematic structural view illustrating a power source of an all-electric injection molding machine according to an embodiment of the present application driving a connector by a linear mover.

Fig. 7 is a schematic structural diagram of a connecting head of an all-electric injection molding machine according to an embodiment of the present application.

The reference numerals are explained below:

a head plate 100; a second plate 200; a tail plate 300; a ball screw 400; a nut 410; a protrusion 411; a screw 420; a connector 500; a transmission mechanism 600; a first hinge rod 610; the second hinge lever 620; a connecting hinge bar 630; a power source 700; a motor 710; a timing belt mechanism 720; a damper 800; a cylinder block 810; a rod body 820; a pull rod 910; a crosshead guide post 920.

Detailed Description

While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.

Thus, a feature indicated in this specification is intended to describe one of the features of an embodiment of the application and does not imply that every embodiment of the application must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, inner, outer, left, right, front, rear, S, J, etc.) are used to explain the structure and movement of the various elements of the application not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and a repetitive description thereof will be omitted.

The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of the present specification.

As shown in fig. 1, an embodiment of an aspect of the present application provides an all-electric injection molding machine capable of preventing a linear mover from being damaged.

Specifically, as shown in fig. 1, 2 and 3, the all-electric injection molding machine includes a head plate 100, two plates 200, a tail plate 300, a linear mover, and a connector 500. The specific shapes of the head plate 100, the second plate 200, and the tail plate 300 are not limited, and the three plates are not limited to being flat. The head plate 100 and the second plate 200 are mold cavities, and injection molding operation can be performed after the head plate 100 and the second plate 200 are combined. The head plate 100 and the tail plate 300 are fixedly installed, for example, the head plate 100 can be directly or indirectly installed on the body of the all-electric injection molding machine, and the tail plate 300 can also be directly or indirectly installed on the body of the all-electric injection molding machine. The two plates 200 are movably installed, the two plates 200 can move relative to the body, the two plates 200 are configured to be capable of approaching to or departing from the head plate 100 towards the head plate 100, namely the head plate 100 and the two plates 200 are opposite, the head plate 100 and the two plates 200 are placed on the same horizontal plane, and when the two plates 200 move towards the head plate 100, the two plates 200 can abut against the head plate 100, so that the two plates 200 and the head plate 100 are clamped. The linear mover includes an axially fixed end fixed to the tailgate 300 and a moving end configured to output a linear reciprocating motion. The connector 500 is fixedly arranged at the movable end, a buffer is arranged on one side of the connector 500 facing the axial fixed end, the buffer is positioned in a space between the connector 500 and the axial fixed end, and the buffer is fixed on the connector 500. The moving end drives the connecting head 500 to move along with the movement of the moving end, the movement of the connecting head 500 drives the second plate 200 to move through the transmission mechanism 600, so that the second plate 200 approaches the head plate 100, the second plate 200 and the head plate 100 are clamped, and the second plate 200 is far away from the head plate 100, so that the second plate 200 and the head plate 100 are opened. When the die sinking, when removing the end and driving two boards 200 and keep away from first board 100, connector 500 also is close to the axial stiff end, sets up the buffer and can avoid the direct rigidity striking axial stiff end of connector 500, can place the axial stiff end and be damaged, and then leads to sharp shifter to be damaged.

Generally speaking, to this all-electric injection molding machine, at the die sinking in-process, connector 500 follows to remove the end and is close to the axial stiff end, and the buffer can avoid the direct rigidity striking axial stiff end of connector 500, avoids damaging the axial stiff end, leads to sharp shifter to be damaged, has protected the internals of injection molding machine. Meanwhile, the moving end drives the connector 500 to move along with the movement of the moving end, and the movement of the connector 500 drives the second plate 200 to approach or leave the head plate 100 to the head plate 100 through the transmission mechanism 600, so that mold closing and mold opening are performed.

In some embodiments of the present application, the bumper is configured as a spring, resilient pad, or damper 800. As shown in fig. 6 and 7, under the condition that the control system of the all-electric injection molding machine fails, in the mold opening process, the connector 500 easily and rigidly impacts the axially fixed end, and the buffer can play a role in buffering, thereby effectively protecting the axially fixed end.

Further alternatively, as shown in fig. 6 and 7, based on the case that the damper is configured as the damper 800, the damper 800 includes a cylinder 810 and a rod 820, a gas or a viscous fluid may be contained in the cylinder 810, the rod 820 is movably inserted into the cylinder 810, a portion of the rod 820 is inserted into the cylinder 810, and a portion of the rod 820 is exposed outside the cylinder 810, the rod 820 is similar to a piston rod of a hydraulic cylinder, and when the depth of the rod 820 inserted into the cylinder 810 increases gradually, the viscous fluid in the cylinder 810 can play a role in damping, so as to play a role in buffering. One of the cylinder 810 and the rod 820 is fixed to the connector 500, and the other is suspended between the axial fixing end and the connector 500, for example, the cylinder 810 is screwed to the connector 500, the rod 820 is in a suspended state, and when the connector 500 approaches the axial fixing end until the axial fixing end is abutted, the rod 820 is gradually inserted into the rod 820, thereby playing a role of buffering.

Further optionally, as shown in fig. 2 and fig. 3, a protrusion 411 is disposed on a side of the axially fixed end facing the connector 500, and the protrusion 411 is disposed on a moving path of the damper 800. To better protect the axially fixed end, the protrusion 411 is disposed on the opposite side of the axially fixed end from the damper 800, and when the rod 820 of the damper 800 abuts against the axially fixed end, the rod 820 abuts directly against the protrusion 411, so that the damper 800 and the axially fixed end are in indirect contact, and the axially fixed end is further protected.

Further optionally, as shown in fig. 6 and 7, the number of the buffers is multiple, and the multiple buffers are distributed on the connecting head 500 along the circumferential direction. The number of the buffers may be two, and the buffers are symmetrically distributed on both sides of the connection head 500. The connection head 500 may be arranged in a cross shape, and the two buffers are distributed on two symmetrical arms of the connection head 500.

In some embodiments of the present application, as shown in fig. 2 and 3, the linear mover is configured as a ball screw 400, the ball screw 400 includes a screw 420 and a nut 410, the nut 410 is configured as the axially fixed end, the screw 420 is configured as the movable end, the nut 410 is sleeved on the screw 420, the nut 410 is fixed in the axial direction, and when the nut 410 rotates, the screw 420 is driven to move along the axial direction. The nut 410 is rotatably mounted on the tail plate 300, the nut 410 can rotate on the tail plate 300, but the nut 410 is axially fixed on the tail plate 300, and one end of the screw rod 420 close to the connector 500 is fixed on the connector 500. When the nut 410 rotates, the screw 420 is driven to move, the movement of the screw 420 drives the connector 500 to move, and the connector 500 drives the two plates 200 to move through the transmission mechanism 600. The protrusion 411 is disposed on the nut 410, and when the damper 800 abuts against the nut 410, the damper 800 abuts against the protrusion 411, so that the damper 800 has a buffering function, and protects the expensive ball screw 400.

In some embodiments of the present application, as shown in fig. 2 and 3, the all-electric injection molding machine further includes a power source 700, and the power source 700 is connected to the nut 410, so that the power source 700 can drive the nut 410 to rotate. The power source 700 may be configured as a motor 710, a synchronous belt mechanism 720, a chain mechanism or a gear mechanism, etc., and the nut 410 may be fixed on a belt pulley, a chain wheel or a gear by means of bolts, etc., so that the motor 710 outputs a rotation speed to drive the synchronous belt mechanism 720, the chain mechanism or the gear mechanism to operate, and the nut 410 is driven to rotate by the belt pulley, the chain wheel or the gear, and the nut 410 drives the screw rod 420 to move.

In some embodiments of the present application, as shown in fig. 4 and 5, the transmission mechanism 600 includes a hinge rod assembly having one end hinged to the two plates 200 and the other end hinged to the tail plate 300, and a connecting hinge rod 630 for connecting the tail plate 300 and the two plates 200. One end of the connection hinge 630 is hinged to the connector 500, and the other end is hinged to the hinge assembly. The movement of the connector 500 drives the connecting hinge bar 630, and the connecting hinge bar 630 drives the hinge bar assembly to link, so that the hinge bar assembly can drive the two plates 200 to move, and then the two plates 200 and the head plate 100 are closed or opened. The transmission mechanism 600 adopts a hinged rod form, the structure is simple and common, and the hinged rod can rotate towards the inside of the full-electric injection molding machine, so that the hinged rod is in a stretched or inclined state, and the internal space is saved.

Further alternatively, as shown in fig. 4 and 5, the hinge rod assembly includes a first hinge rod 610 and a second hinge rod 620 hinged to each other, and one end of the first hinge rod 610 is hinged to the tail plate 300, and the other end is hinged to the second hinge rod 620. One end of the second hinge lever 620 is hinged to the first hinge lever 610, and the other end is hinged to the two plates 200. One end of the connection hinge 630 is hinged to the connection head 500, and the other end is hinged to the first hinge 610. When the connecting joint 500 drives the connecting hinge 630, the connecting hinge 630 rotates, the connecting hinge 630 further pulls the first hinge 610 and the second hinge 620 to move, and the second hinge 620 drives the second plate 200 to move.

Furthermore, as shown in fig. 4 and 5, there are two transmission mechanisms 600, and the two transmission mechanisms 600 are symmetrically distributed on the connecting head 500. In the case that the connection head 500 is cross-shaped, the two transmission mechanisms 600 are symmetrically distributed on two other symmetrical arms of the connection head 500.

One embodiment

In the conventional device for mechanically protecting the die assembly ball screw 400 of the injection molding machine, if the displacement sensor fails, the controller cannot detect the position of the moving die plate body, so that the crosshead impacts the die assembly screw nut 410, and the die assembly screw is broken.

The purpose of this embodiment is to provide an all-electric injection molding machine, which can improve and reduce the rigid impact of the crosshead (which can be understood by referring to the connector 500 above), effectively prevent the mold clamping lead screw (which can be understood by referring to the screw 420 above) from breaking, prolong the service life of the mold clamping lead screw, and be safer.

The all-electric injection molding machine includes a buffer, a clamp screw bearing back gland, a clamp screw, a crosshead, a clamp screw nut 410 (which can be understood with reference to nut 410 above). The device is used for preventing the damage of expensive devices such as a screw bearing and the like caused by the fact that a controller cannot correctly detect the position of a moving die plate body if a displacement sensor fails or the condition of galloping occurs in the die opening process and the control is not accurate to impact the die closing screw nut 410.

More specifically, the all-electric injection molding machine includes a head plate 100, a second plate 200, a tail plate 300, a crosshead, a buffer, a crosshead guide post 920, a clamp screw, a first hinge rod 610, a second hinge rod 620, a connecting hinge rod 630, a clamp screw bearing nut 410, and a tie rod 910.

The head plate 100 is fixedly arranged on the pull rod 910, and the positions of the head plate 100, the tail plate 300 and the two plates 200 correspond. More specifically, the number of the pull rods 910 is four, the pull rods 910 are parallel to each other, and are arranged in a rectangular manner to form an integral pull rod 910 group, the fixed mold plate is fixedly arranged at one end of the pull rod 910 group, and the pull rods 910 are linear.

The two plates 200 are slidably disposed on the pull rods 910, and the two plates 200 are close to or far from the head plate 100 along the axial direction of the pull rods 910, so as to realize mold closing and mold opening. The motor 710 drives the synchronous belt wheel to rotate the screw rod, so that the crosshead is driven to move. The crosshead moves the first hinge rod 610, the second hinge rod 620, and the connecting hinge rod 630 to move the die plate. The buffer corresponds to the position of the lead screw in the moving direction of the movable template. The bumper slows the impact of the crosshead against the clamp screw bearing nut 410.

When the injection molding machine is from the die assembly stage to the end of the die opening stage, the motor 710 drives the die assembly lead screw to rotate, so that the first hinge rod 610, the second hinge rod 620, the connecting hinge rod 630 and other parts are pulled to drive the two plates 200 to move towards the tail plate 300, if a displacement sensor (such as an electronic ruler) fails, a controller cannot detect the specific positions of the two plates 200, probability control is inaccurate, a cross head collides with the die assembly lead screw nut 410, and through a buffer fixed on the cross head, the rigid impact of the cross head on the die assembly lead screw nut 410 can be greatly reduced, and the die assembly lead screw is protected from being torn.

The application also provides a control system of an all-electric injection molding machine, which comprises the all-electric injection molding machine as described in any one of the preceding items; the control device is electrically connected with the power source 700 of the all-electric injection molding machine, the control device is configured to control the power source 700 to work, and when the control device receives a first signal, the control device controls the power source 700 to decelerate, and the first signal is that the connector 500 of the all-electric injection molding machine is in contact with the buffer.

Therefore, when the connector 500 contacts with the buffer, the distance between the connector 500 and the axial fixed end is very short, and the kinetic energy of the connector 500 is reduced by controlling the speed reduction of the power source 700, so that the risk of the rigid impact of the connector 500 on the axial fixed end is further reduced, the buffer is protected, and the service life of the buffer is prolonged.

In more detail, at least one of the connection head 500 and the buffer is provided with a contact detection unit capable of detecting the contact of the connection head 500 with the buffer and emitting a corresponding signal according to the detection result.

The application also provides a control method, which is applied to the all-electric injection molding machine of any one of the embodiments, and comprises the following steps:

step 101: when receiving the first signal, the mobile terminal is controlled to perform a deceleration motion, and the first signal is that the connector 500 is in contact with the buffer.

Therefore, when the connector 500 is in contact with the buffer, the distance between the connector 500 and the axial fixed end is very short, and the kinetic energy of the connector 500 is reduced by controlling the speed reduction motion of the moving end, so that the risk of the rigid impact of the connector 500 on the axial fixed end is further reduced, the buffer is protected, and the service life of the buffer is prolonged.

Further, before step 101, the method further includes:

step 201: and executing step 101 after receiving the second signal, otherwise, not executing step 101, wherein the second signal is that the displacement detection unit is in a fault state.

Therefore, only when the displacement detection unit is in fault, when a first signal indicating that the connector 500 is in contact with the buffer is received, the moving end is controlled to perform deceleration movement, otherwise, the position information of the connector 500 can be determined according to the detection real-time detection result of the displacement detection unit, and the corresponding movement of the moving end is controlled.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An all-electric injection molding machine, comprising:

a headboard fixedly installed;

the tail plate is fixedly installed;

2. An all-electric injection molding machine according to claim 1, wherein the buffer is configured as a spring, a resilient pad, or a damper.

3. An all-electric injection molding machine according to claim 2, wherein, based on the fact that the buffer is configured as a damper, the damper includes a cylinder body and a rod body, the rod body is movably inserted into the cylinder body, one of the cylinder body and the rod body is fixed to the connecting head, and the other is suspended between the axially fixed end and the connecting head.

4. An all-electric injection molding machine according to claim 3, wherein a side of the axially fixed end facing the coupling head is provided with a projection provided on a moving path of the damper.

5. An all-electric injection molding machine according to claim 1, wherein there are a plurality of said buffers, and a plurality of said buffers are distributed circumferentially around said connecting head.

6. An all-electric injection molding machine according to claim 1, wherein said linear mover is provided as a ball screw including a screw rod and a nut, said nut being configured as said axially fixed end, said screw rod being configured as said movable end, said nut being fitted over said screw rod, said nut being rotatably mounted to said tail plate, an end portion of said screw rod being fixed to said connecting head;

the full-electric injection molding machine further comprises a power source, and the power source is connected to the nut to drive the nut to rotate.

7. An all-electric injection molding machine according to any one of claims 1 to 6, wherein the transmission mechanism includes a hinge rod assembly and a connecting hinge rod, one end of the hinge rod assembly is hinged to the two plates, the other end is hinged to the tail plate, one end of the connecting hinge rod is hinged to the connecting head, and the other end is hinged to the hinge rod assembly.

8. An all-electric injection molding machine according to claim 7, wherein said hinge rod assembly includes a first hinge rod and a second hinge rod hinged to each other, the first hinge rod being hinged to said tail plate, the second hinge rod being hinged to said two plates, and the other end of the connecting hinge rod being hinged to said first hinge rod.

9. An all-electric injection molding machine as claimed in any one of claims 1 to 6, wherein there are two of said transmission mechanisms, and two of said transmission mechanisms are symmetrically distributed on said connecting head.

10. A control system for an all-electric injection molding machine, comprising:

an all-electric injection molding machine according to any one of claims 1 to 9;

the control device is electrically connected with a power source of the all-electric injection molding machine, the control device is configured to control the power source to work, when the control device receives a first signal, the control device controls the power source to decelerate, and the first signal is that the connector of the all-electric injection molding machine is contacted with the buffer.