All-electric injection molding machine and motor control structure thereof

Abstract

The utility model discloses an all-electric injection molding machine and a motor control structure thereof. The motor control structure includes a first motor unit, a second motor unit, and an auxiliary motor unit. The first motor unit comprises a first servo motor and a first belt pulley set. The first servo motor can be driven to drive the first ball screw to rotate through the first belt pulley set. The second motor unit comprises a second servo motor and a second belt pulley set. The second servo motor can be driven to drive the second ball screw to rotate through the second belt pulley set. The auxiliary motor unit comprises an auxiliary servo motor and an auxiliary belt pulley set. And the auxiliary servo motor can be driven and simultaneously assists in driving the first ball screw and the second ball screw to rotate, so that the driving force to the first ball screw and the second ball screw is increased.

Description

Technical Field

[0001] This utility model relates to a processing equipment, and more particularly to an all-electric injection molding machine and a motor control structure for the all-electric injection molding machine. Background Technology

[0002] Compared to injection molding machines driven by pneumatic or hydraulic cylinders, all-electric injection molding machines have advantages such as higher energy efficiency, faster cycle time, and quieter operation.

[0003] See Figure 1 and Figure 2 An existing all-electric injection molding machine 9 includes a base 91, and a feeding unit 92, a screw unit 93, an injection unit 94, a first motor unit 95, and a second motor unit 96 disposed on the base 91.

[0004] The feeding unit 92 has a feed inlet 901. The screw unit 93 is connected to the feeding unit 92 and includes two ball screws 931. The injection unit 94 is connected to the screw unit 93 and has an injection tube 941. The first motor unit 95 includes a first motor 951 and a first pulley assembly 952. The first pulley assembly 952 is installed between the first motor 951 and one of the ball screws 931. The first motor 95 can be driven to rotate one of the ball screws 931 via the first pulley assembly 952. The second motor unit 96 includes a second motor 961 and a second pulley assembly 962. The second pulley assembly 962 is installed between the second motor 961 and the other ball screw 931. The second motor 961 can be driven to rotate the other ball screw 931 via the second pulley assembly 962.

[0005] However, since this all-electric injection molding machine is driven by a single motor rotating a single ball screw, its driving force is weaker than that of a pneumatic or hydraulic cylinder, making it difficult to apply to parts with larger molding dimensions. Utility Model Content

[0006] One objective of this invention is to provide a motor control structure for an all-electric injection molding machine that can at least overcome the shortcomings of the prior art.

[0007] This utility model discloses a motor control structure for an all-electric injection molding machine, suitable for installation in such machines, which have a first ball screw and a second ball screw. The motor control structure includes a first motor unit, a second motor unit, and an auxiliary motor unit. The first motor unit includes a first servo motor and a first pulley assembly. The first pulley assembly is installed between the first servo motor and the first ball screw. The first servo motor can be driven to rotate the first ball screw via the first pulley assembly. The second motor unit includes a second servo motor and a second pulley assembly. The second pulley assembly is installed between the second servo motor and the second ball screw. The second servo motor can be driven to rotate the second ball screw via the second pulley assembly. The auxiliary motor unit includes an auxiliary servo motor and an auxiliary pulley assembly. The auxiliary pulley assembly is installed between the auxiliary servo motor, the first pulley assembly, and the second pulley assembly. The auxiliary servo motor can be driven to simultaneously assist in rotating both the first and second ball screws via the first and second pulley assemblies.

[0008] The motor control structure of the all-electric injection molding machine of this utility model includes a first pulley group comprising a first large pulley, a first small pulley, and a first main belt. The first large pulley is coaxially mounted on the first ball screw, the first small pulley is coaxially mounted on the shaft of the first servo motor, and the first main belt is wound around the first large pulley and the first small pulley.

[0009] The motor control structure of the all-electric injection molding machine of this utility model includes a second pulley group comprising a second large pulley, a second small pulley, and a second main belt. The second large pulley is coaxially mounted on the second ball screw, the second small pulley is coaxially mounted on the shaft of the second servo motor, and the second main belt is wound around the second large pulley and the second small pulley.

[0010] The motor control structure of the all-electric injection molding machine of this utility model includes an auxiliary pulley group comprising an auxiliary pulley, a first auxiliary belt, and a second auxiliary belt. The auxiliary pulley is coaxially disposed on the rotating shaft of the auxiliary servo motor. The first auxiliary belt is wrapped around the auxiliary pulley and the first large pulley, and the second auxiliary belt is wrapped around the auxiliary pulley and the second large pulley.

[0011] The motor control structure of the all-electric injection machine of this utility model includes an auxiliary motor unit that further includes a first idler wheel and a second idler wheel. The first auxiliary belt is wrapped around the auxiliary pulley, the first idler wheel, and the first large pulley, and the second auxiliary belt is wrapped around the auxiliary pulley, the second idler wheel, and the second large pulley.

[0012] The motor control structure of the all-electric injection machine of this utility model further includes a motor fixing plate. The first motor unit also has a first fixing seat mounted on the motor fixing plate and for mounting the first servo motor. The first large pulley is pivotally mounted on the motor fixing plate.

[0013] The motor control structure of the all-electric injection machine of this utility model further includes a motor fixing plate, and the second motor unit also has a second fixing seat mounted on the motor fixing plate for mounting the second servo motor, and the second large pulley is pivotally mounted on the motor fixing plate.

[0014] The motor control structure of the all-electric injection machine of this utility model further includes a motor fixing plate. The auxiliary motor unit also has an auxiliary fixing seat mounted on the motor fixing plate for mounting the auxiliary servo motor. The first idler wheel and the second idler wheel are pivotally mounted on the motor fixing plate.

[0015] Another objective of this invention is to provide an all-electric injection molding machine that can at least overcome the shortcomings of the prior art.

[0016] This utility model discloses an all-electric injection molding machine, comprising a feeding unit, a screw unit, an injection unit, and a motor control structure. The feeding unit includes a feed inlet. The screw unit is connected to the feeding unit and includes a first ball screw and a second ball screw. The injection unit is connected to the screw unit and includes an injection tube.

[0017] The beneficial effects of this invention are as follows: Through the configuration of the auxiliary motor unit, the auxiliary servo motor can be driven to rotate the first and second ball screws via the auxiliary pulley group, the first pulley group, and the second pulley group, thereby increasing the driving force of the motor control structure on the screw unit. Therefore, compared to existing all-electric injection molding machines that use a single motor to drive a single ball screw, this invention provides stronger driving force and is suitable for molding parts with larger dimensions. Attached Figure Description

[0018] Other features and effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a three-dimensional diagram of an existing all-electric injection molding machine.

[0020] Figure 2 This is a side view of the existing all-electric injection molding machine.

[0021] Figure 3 This is a perspective view of an embodiment of the all-electric injection molding machine of this utility model.

[0022] Figure 4 This is a side view of the embodiment described. Detailed Implementation

[0023] See Figure 3 and Figure 4 An embodiment of the all-electric injection molding machine 1 of this utility model includes a base 2, and a feeding unit 3, a screw unit 4, an injection unit 5, and a motor control structure 6 installed on the base 2. The feeding unit 3 includes a feed inlet 301. The screw unit 4 is connected to the feeding unit 3 and includes a first ball screw 41 and a second ball screw 42. The injection unit 5 is connected to the screw unit 4 and includes an injection tube 51, a female nozzle 52, and a female nozzle 53 connected to each other.

[0024] Since feeding plastic granules into the feed port 301 of the feeding unit 3 and heating them into molten plastic, and then pressurizing and conveying the molten plastic to the injection unit 5 through the first ball screw 41 and the second ball screw 42 of the screw unit 4, and finally ejecting it through the injection tube 51, the female nozzle 52 and the female nozzle 53, is existing technology and is not the focus of this case, so it will not be described in detail.

[0025] The motor control structure 6 includes a first motor unit 61, a second motor unit 62, an auxiliary motor unit 63, and a motor mounting plate 64.

[0026] The first motor unit 61 includes a first servo motor 611, a first pulley assembly 612, and a first mounting base 613. The first pulley assembly 612 is mounted between the first servo motor 611 and the first ball screw 41. The first pulley assembly 612 includes a first large pulley 615, a first small pulley 616, and a first main belt 617. The first large pulley 615 is pivotally mounted on the motor mounting plate 64 and coaxially mounted on the first ball screw 41. The first small pulley 616 is coaxially mounted on the shaft 614 of the first servo motor 611. The first main belt 617 surrounds the first large pulley 615 and the first small pulley 616. The first mounting base 613 is mounted on the motor mounting plate 64 and provides mounting space for the first servo motor 611. The first servo motor 611 can be driven to rotate the first ball screw 41 via the first pulley assembly 612.

[0027] The second motor unit 62 includes a second servo motor 621, a second pulley assembly 622, and a second mounting base 623. The second pulley assembly 622 is mounted between the second servo motor 621 and the second ball screw 42. The second pulley assembly 622 includes a second large pulley 625, a second small pulley 626, and a second main belt 627. The second large pulley 625 is pivotally mounted on the motor mounting plate 64 and coaxially mounted on the second ball screw 42. The second small pulley 626 is coaxially mounted on the shaft 624 of the second servo motor 621. The second main belt 627 surrounds the second large pulley 625 and the second small pulley 626. The second mounting base 623 is mounted on the motor mounting plate 64 and provides mounting space for the second servo motor 621. The second servo motor 621 can be driven to rotate the second ball screw 42 via the second pulley assembly 622.

[0028] The auxiliary motor unit 63 includes an auxiliary servo motor 631, an auxiliary pulley assembly 632, and an auxiliary mounting base 633. The auxiliary pulley assembly 632 is mounted between the auxiliary servo motor 631, the first pulley assembly 612, and the second pulley assembly 622. The auxiliary pulley assembly 632 includes an auxiliary pulley 635, a first auxiliary belt 636, a second auxiliary belt 637, a first idler pulley 638, and a second idler pulley 639. The auxiliary pulley 635 is coaxially mounted on the shaft 634 of the auxiliary servo motor 631. The first idler pulley 638 and the second idler pulley 639 are pivotally mounted on the motor mounting plate 64. The first auxiliary belt 636 wraps around the auxiliary pulley 635, the first idler pulley 638, and the first large pulley 615. The second auxiliary belt 637 wraps around the auxiliary pulley 635, the second idler pulley 639, and the second large pulley 625. The auxiliary servo motor 631 can be driven, and through the auxiliary pulley group 632, the first pulley group 612 and the second pulley group 622, it simultaneously assists in driving the first ball screw 41 and the second ball screw 42 to rotate.

[0029] In summary, the all-electric injection molding machine 1 and its motor control structure 6 of this utility model, through the setting of the auxiliary motor unit 63, allow the auxiliary servo motor 631 to be driven to rotate via the auxiliary pulley group 632, the first pulley group 612, and the second pulley group 622, thereby increasing the driving force of the motor control structure 6 on the screw unit 4. Therefore, compared with the existing all-electric injection molding machines that use a single motor to drive a single ball screw, it has a stronger driving force and can be used for molding parts with larger dimensions, thus effectively achieving the purpose of this utility model.

[0030] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of the claims of this utility model. Equivalent variations made based on the contents of the claims and description of this utility model should also be covered by the scope of the claims of this utility model.

Claims

1. A motor control structure for an all-electric injection molding machine, suitable for installation in an all-electric injection molding machine, wherein the all-electric injection molding machine has a first ball screw and a second ball screw, characterized in that... The motor control structure includes: The first motor unit includes a first servo motor and a first pulley assembly. The first pulley assembly is used to be installed between the first servo motor and the first ball screw. The first servo motor can be driven to rotate the first ball screw through the first pulley assembly. The second motor unit includes a second servo motor and a second pulley assembly. The second pulley assembly is used to be installed between the second servo motor and the second ball screw. The second servo motor can be driven to rotate the second ball screw through the second pulley assembly. and An auxiliary motor unit includes an auxiliary servo motor and an auxiliary pulley assembly. The auxiliary pulley assembly is installed between the auxiliary servo motor, the first pulley assembly, and the second pulley assembly. The auxiliary servo motor can be driven, and the first pulley assembly and the second pulley assembly simultaneously assist in driving the first ball screw and the second ball screw to rotate.

2. The motor control structure of the all-electric injection molding machine according to claim 1, characterized in that: The first pulley assembly includes a first large pulley, a first small pulley, and a first main belt. The first large pulley is coaxially mounted on the first ball screw, the first small pulley is coaxially mounted on the shaft of the first servo motor, and the first main belt is wound around the first large pulley and the first small pulley.

3. The motor control structure of the all-electric injection molding machine according to claim 2, characterized in that: The second pulley assembly includes a second large pulley, a second small pulley, and a second main belt. The second large pulley is coaxially mounted on the second ball screw, the second small pulley is coaxially mounted on the shaft of the second servo motor, and the second main belt is wound around the second large pulley and the second small pulley.

4. The motor control structure of the all-electric injection molding machine according to claim 3, characterized in that: The auxiliary pulley assembly includes an auxiliary pulley, a first auxiliary belt, and a second auxiliary belt. The auxiliary pulley is coaxially disposed on the shaft of the auxiliary servo motor. The first auxiliary belt is wrapped around the auxiliary pulley and the first large pulley, and the second auxiliary belt is wrapped around the auxiliary pulley and the second large pulley.

5. The motor control structure of the all-electric injection molding machine according to claim 4, characterized in that: The auxiliary motor unit further includes a first idler pulley and a second idler pulley. The first auxiliary belt is wrapped around the auxiliary pulley, the first idler pulley, and the first large pulley. The second auxiliary belt is wrapped around the auxiliary pulley, the second idler pulley, and the second large pulley.

6. The motor control structure of the all-electric injection molding machine according to claim 2, characterized in that: The motor control structure further includes a motor mounting plate, and the first motor unit also has a first mounting base mounted on the motor mounting plate for mounting the first servo motor, and the first large pulley is pivotally mounted on the motor mounting plate.

7. The motor control structure of the all-electric injection molding machine according to claim 3, characterized in that: The motor control structure further includes a motor mounting plate, and the second motor unit further has a second mounting base mounted on the motor mounting plate for mounting the second servo motor, and the second large pulley is pivotally mounted on the motor mounting plate.

8. The motor control structure of the all-electric injection molding machine according to claim 5, characterized in that: The motor control structure further includes a motor mounting plate, and the auxiliary motor unit further includes an auxiliary mounting base mounted on the motor mounting plate for mounting the auxiliary servo motor. The first idler wheel and the second idler wheel are pivotally mounted on the motor mounting plate.

9. A fully electric injection molding machine, characterized in that... Include: The feeding unit includes a feed inlet; The screw unit is assembled to the feeding unit and includes a first ball screw and a second ball screw; An injection unit is assembled to the screw unit and includes an injection tube; and The motor control structure as described in any one of claims 1 to 8.

Images