Ball screw driven mold moving mechanism

Abstract

The present invention discloses a ball screw driven mold shifting mechanism, comprising a bracket and a mold shifting device slidably connected to the bracket and a driving mechanism for driving the mold shifting device to slide on the bracket, the driving mechanism comprising a pair of ball screws mounted on the top of the bracket and a pair of servo motors for driving the ball screws to move, the tops of both sides of the mold shifting device are respectively connected to the ball nuts of the ball screws through mold shifting lugs, the top of the bracket is provided with a guide rail matching the mold shifting lug, and the bottom of the mold shifting lug is provided with at least one slider matching the guide rail. The present invention adopts a servo motor to drive the mold shifting device to move forward and backward through a ball screw, and is equipped with support and guidance of a guide rail and a slider, so as to ensure the stability of the mold shifting device, guarantee the stability and reliability of mold opening and closing, and ensure the product molding effect and product quality; at the same time, the ball screw, guide rail and slider are structurally reliable and have a long service life, and do not need to be replaced frequently, thereby reducing production costs and improving production efficiency.

Description

Technical Field

[0001] The invention relates to a component of a foaming machine, and in particular to a ball screw driven mold moving mechanism. Background Art

[0002] The mold moving mechanism is an essential mechanism in the foam molding machine to drive the mold to move back and forth between the mold opening position and the mold closing position; the conventional mold moving mechanism usually uses a motor to drive the mold to move back and forth through a synchronous belt drive assembly. This structure is greatly affected by the quality of the synchronous belt drive assembly, especially under high pressure and high temperature environment, the transmission stability of the synchronous belt drive assembly cannot be guaranteed, affecting the stability of mold opening and closing, affecting the product molding effect, and thus affecting the product quality; and the synchronous belt has a short service life and needs frequent maintenance and replacement, which increases production costs and reduces production efficiency. Summary of the invention

[0003] In order to solve the defects and shortcomings existing in the above-mentioned prior art, the present invention provides a ball screw driven mold moving mechanism which adopts a servo motor to drive the mold to move back and forth through a ball screw, and is equipped with support and guidance of guide rails and sliders to ensure the stability of the mold movement, the stability and reliability of mold opening and closing, and the product molding effect and product quality; at the same time, the ball screw, guide rail and slider have a firm structure and a long service life, do not need to be replaced frequently, reduce production costs, and improve production efficiency.

[0004] The technical solution of the present invention is: a ball screw driven mold moving mechanism, including a bracket and a mold moving slidingly connected to the bracket and a driving mechanism for driving the mold moving to slide on the bracket, the driving mechanism includes a pair of ball screws installed on the top of the bracket and a pair of servo motors driving the ball screws to move, the tops of both sides of the mold moving are respectively connected to the ball nuts of the ball screw through mold moving ears, the top of the bracket is provided with a guide rail matching the mold moving ear, and the bottom of the mold moving ear is provided with at least one slider matching the guide rail.

[0005] The present invention adopts a servo motor to drive the mold to move back and forth through a ball screw, and is equipped with support and guidance of guide rails and sliders to ensure the stability of the mold movement, guarantee the stability and reliability of mold opening and closing, and ensure product molding effect and product quality; at the same time, the ball screw, guide rail and slider have a firm structure and a long service life, and do not need to be replaced frequently, thereby reducing production costs and improving production efficiency.

[0006] Preferably, both ends of the ball screw are respectively mounted on the top of the bracket through screw seats, the servo motor is mounted on one of the screw seats through a reducer, and the screw seat is mounted on the top of the bracket through a fixing plate and a triangular support.

[0007] This structure ensures that the ball screw is installed firmly and reliably, and further ensures that the movement of the mold driven by it is more stable and reliable.

[0008] Preferably, one side of the mold shifting ear is connected to the ball nut via a connecting plate, and two parallel protective plates are provided between the connecting plate and the mold shifting ear. The two protective plates are respectively located on the upper and lower sides of the ball nut, and the other side of the mold shifting ear is fixedly connected to the top of the mold shifting via a mold shifting hanging plate.

[0009] This structure ensures the installation reliability between the mold transfer and the mold transfer lifting ear, and between the ball nut and the mold transfer lifting ear; at the same time, it can play a role in protecting the ball nut from movement.

[0010] Preferably, the bracket includes four supporting columns and two top beams, a top beam is fixed on every two supporting columns, the two top beams are arranged in parallel, the transfer mold is slidably connected between the two top beams, and the ball screw, servo motor and guide rail are all fixed on the top beams.

[0011] This structure ensures the support reliability of the bracket and facilitates the installation of mold transfer, ball screw, servo motor and guide rail.

[0012] Preferably, the guide rail is installed on the top beam through a guide rail plate, the guide rail plate is provided with a guide rail groove matching the guide rail, the guide rail is provided with a plurality of countersunk holes, and the fixing bolts are screwed into the top beam through the countersunk holes on the guide rail and the fixing holes on the guide rail plate and fixed through internal threads or penetrate into the top beam and fixed through nuts.

[0013] This structure ensures the installation reliability of the guide rail and further ensures the smooth movement of the mold.

[0014] Preferably, two of the supporting columns are fixed with shifting mold bearing beams, the two shifting mold bearing beams are arranged in parallel below the top beam, and the middle parts of both sides of the shifting mold are slidably connected to the shifting mold bearing beams through sliding frames respectively.

[0015] This structure allows the mold to be better loaded, further ensuring the stability and reliability of the mold movement.

[0016] Preferably, a plurality of sliding rollers are provided at the bottom of the sliding frame, a sliding rail cooperating with the sliding rollers is provided on the mold shifting bearing beam, the sliding frame is installed on the mold shifting through a reinforcing plate, and the mold shifting bearing beam is installed on the supporting column through a bearing beam pad.

[0017] This structure makes the installation of the transfer mold bearing beam and the sliding frame more firm and reliable, and at the same time makes the sliding of the transfer mold more stable and reliable.

[0018] Preferably, the sliding frame is connected to the reinforcing plate via a sliding frame height adjustment assembly, the reinforcing plate is provided with a sliding frame limiting hole matching the sliding frame, the shifting mold bearing beam is connected to the bearing beam pad via a bearing beam height adjustment assembly, the bearing beam pad is provided with a bearing beam limiting hole matching the shifting mold bearing beam.

[0019] This structure allows the height of the sliding frame and the height of the mold transfer bearing beam to be properly adjusted, thereby meeting the needs of mold transfers of different specifications and thus meeting the molding needs of different products.

[0020] Preferably, the sliding frame height adjustment assembly includes a first adjustment block fixed on the reinforcing plate, a fixed block fixed on the top of the sliding frame, two first adjustment bolts connecting the first adjustment block and the fixed block, and a first adjustment nut matching the first adjustment bolts.

[0021] This structure makes the height adjustment of the sliding frame more stable and reliable.

[0022] Preferably, the load-bearing beam height adjustment assembly comprises a second adjustment block fixed on the load-bearing beam pad, a second adjustment bolt connecting the second adjustment block and the bottom of the shifting mold load-bearing beam, and a second adjustment nut matching the second adjustment bolt.

[0023] This structure makes the height adjustment of the load-bearing beam more stable and reliable.

[0024] The present invention adopts a servo motor to drive the mold to move back and forth through a ball screw, and is equipped with support and guidance of guide rails and sliders to ensure the stability of the mold movement, guarantee the stability and reliability of mold opening and closing, and ensure product molding effect and product quality; at the same time, the ball screw, guide rail and slider have a firm structure and a long service life, and do not need to be replaced frequently, thereby reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a side schematic diagram of the present invention;

[0027] Figure 3 It is a top view schematic diagram of the present invention;

[0028] Figure 4 for Figure 1 The enlarged schematic diagram of point I in the middle;

[0029] Figure 5 for Figure 1 The enlarged schematic diagram of II in the middle;

[0030] In the figure, 1. mold shifting, 2. ball screw, 3. ball nut, 4. servo motor, 5. mold shifting lifting ear, 6. guide rail, 7. slider, 8. screw seat, 9. reducer, 10. connecting plate, 11. fixed plate, 12. triangle support, 13. protective plate, 14. mold shifting hanging plate, 15. supporting column, 16. top beam, 17. guide rail pad, 18. guide rail groove, 19. countersunk hole, 20. mold shifting bearing beam, 21. sliding frame, 22. sliding roller, 23. sliding rail, 24. reinforcement plate, 25. bearing beam pad, 26. sliding frame limiting hole, 27. bearing beam limiting hole, 28. first adjusting block, 29. first fixed block, 30. first adjusting bolt, 31. first adjusting nut, 32. second adjusting block, 33. second adjusting bolt, 34. second adjusting nut. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, but this does not limit the protection scope of the present invention.

[0032] like Figure 1-5As shown, a ball screw driven mold shifting mechanism comprises a bracket and a mold shifting 1 slidably connected to the bracket and a driving mechanism for driving the mold shifting 1 to slide on the bracket, the driving mechanism comprises a pair of ball screws 2 mounted on the top of the bracket and a pair of servo motors 3 driving the ball screws 2 to move, the tops of both sides of the mold shifting 1 are respectively connected to the ball nuts 3 of the ball screws 2 through mold shifting ears 5, the top of the bracket is provided with a guide rail 6 matching the mold shifting ears 5, and the bottom of the mold shifting ears 5 is provided with three sliders 7 matching the guide rails 6. The two ends of the ball screw 2 are respectively mounted on the top of the bracket through a screw seat 8, the servo motor 4 is mounted on one of the screw seats through a reducer 9, and the screw seat 8 is mounted on the top of the bracket through a fixing plate 11 and a triangular support 12. One side of the mold shifting ear 5 is connected to the ball nut 3 through a connecting plate 10. Two parallel protective plates 13 are arranged between the connecting plate 10 and the mold shifting ear 5. The two protective plates are respectively located on the upper and lower sides of the ball nut 3. The other side of the mold shifting ear 5 is fixedly connected to the top of the mold shifting 1 through the mold shifting hanging plate 14. The bracket includes four supporting columns 15 and two top beams 16. A top beam is fixed on every two supporting columns. The two top beams are arranged in parallel. The mold shifting 11 is slidably connected between the two top beams. The ball screw 2, the servo motor 4 and the guide rail 6 are all fixed on the top beam 16. The guide rail 6 is installed on the top beam 16 through the guide rail pad 17. The guide rail pad 17 is provided with a guide rail groove 18 matching the guide rail 6. The guide rail 6 is provided with a plurality of countersunk holes 19. The fixing bolts are screwed into the top beam 16 after passing through the countersunk holes 19 on the guide rail 6 and the fixing holes on the guide rail pad in turn and are fixed by internal threads. Two of the supporting columns are fixed with a transfer mold bearing beam 20, which is arranged in parallel below the top beam 16. The middle of both sides of the transfer mold 1 are respectively slidably connected to the transfer mold bearing beam 20 through a sliding frame 21. Two sliding rollers 22 are arranged at the bottom of the sliding frame 21, and a sliding rail 23 matching the sliding rollers 22 is arranged on the transfer mold bearing beam 20. The sliding frame 21 is installed on the transfer mold 1 through a reinforcing plate 24, and the transfer mold bearing beam 20 is installed on the supporting column 15 through a bearing beam pad 25. The sliding frame 21 is connected to the reinforcing plate 24 through a sliding frame height adjustment component, and the reinforcing plate 24 is provided with a sliding frame limiting hole 26 matching the sliding frame 21. The transfer mold bearing beam 20 is connected to the bearing beam pad 25 through a bearing beam height adjustment component, and the bearing beam pad 25 is provided with a bearing beam limiting hole 27 matching the transfer mold bearing beam 20. The height adjustment assembly of the sliding frame includes a first adjustment block 28 fixed on the reinforcing plate 24, a first fixing block 29 fixed on the top of the sliding frame 21, two first adjustment bolts 30 connected between the first adjustment block 28 and the fixing block 29, and a first adjustment nut 31 matched with the first adjustment bolt 30. The height adjustment assembly of the bearing beam includes a second adjustment block 32 fixed on the bearing beam pad 25, a second adjustment bolt 33 connecting the second adjustment block 32 and the bottom of the transfer mold bearing beam 20, and a second adjustment nut 34 matched with the second adjustment bolt 33.

[0033] When the present invention is in use, the other end of the mold shifting bearing beam is supported by an auxiliary column; the servo motor drives the ball screw to rotate, and the ball nut on the ball screw drives the mold shifting to slide back and forth under the support and guidance of the guide rail and the slider through the mold shifting ear, so that the mold shifting can cooperate with the fixed mold to realize mold opening and closing.

[0034] The present invention adopts a servo motor to drive the mold to move back and forth through a ball screw, and is equipped with support and guidance of guide rails and sliders to ensure the stability of the mold movement, guarantee the stability and reliability of mold opening and closing, and ensure product molding effect and product quality; at the same time, the ball screw, guide rail and slider have a firm structure and a long service life, and do not need to be replaced frequently, thereby reducing production costs and improving production efficiency.

Claims

1. A ball screw driven mold transfer mechanism, comprising a bracket, a mold transfer slidably connected to the bracket, and a driving mechanism for driving the mold transfer to slide on the bracket, characterized in that: The driving mechanism includes a pair of ball screws installed on the top of the bracket and a pair of servo motors driving the ball screws. The tops of both sides of the mold transfer are connected to the ball nuts of the ball screws through mold transfer ears respectively. The top of the bracket is provided with a guide rail matching the mold transfer ear, and the bottom of the mold transfer ear is provided with at least one slider matching the guide rail. The bracket includes four supporting columns and two top beams, one top beam is fixed on every two supporting columns, the two top beams are arranged in parallel, the transfer mold is slidably connected between the two top beams, and the ball screw, servo motor and guide rail are all fixed on the top beams; The guide rail is installed on the top beam through a guide rail pad, the guide rail pad is provided with a guide rail groove matching the guide rail, the guide rail is provided with a plurality of countersunk holes, and the fixing bolts are screwed into the top beam through the countersunk holes on the guide rail and the fixing holes on the guide rail pad in sequence, and then screwed into the top beam to be fixed through internal threads or penetrated into the top beam to be fixed through nuts; Two supporting columns are fixed with mold transfer bearing beams, which are arranged in parallel below the top beam, and the middle parts of both sides of the mold transfer are slidably connected to the mold transfer bearing beams through sliding frames respectively; The bottom of the sliding frame is provided with a plurality of sliding rollers, the transfer mold bearing beam is provided with a slide rail matching the sliding rollers, the sliding frame is installed on the transfer mold through a reinforcing plate, and the transfer mold bearing beam is installed on the supporting column through a bearing beam pad; The sliding frame is connected to the reinforcing plate through a sliding frame height adjustment component, and the reinforcing plate is provided with a sliding frame limit hole matching the sliding frame. The shifting mold bearing beam is connected to the bearing beam pad through a bearing beam height adjustment component, and the bearing beam pad is provided with a bearing beam limit hole matching the shifting mold bearing beam. The sliding frame height adjustment assembly comprises a first adjustment block fixed on the reinforcing plate, a fixed block fixed on the top of the sliding frame, two first adjustment bolts connecting the first adjustment block and the fixed block, and a first adjustment nut matched with the first adjustment bolt; The load-bearing beam height adjustment assembly comprises a second adjustment block fixed on the load-bearing beam pad, a second adjustment bolt connecting the second adjustment block and the bottom of the load-bearing beam, and a second adjustment nut matching the second adjustment bolt.

2. A ball screw driven mold moving mechanism according to claim 1, characterized in that: The two ends of the ball screw are respectively installed on the top of the bracket through the screw seats, the servo motor is installed on one of the screw seats through the reducer, and the screw seat is installed on the top of the bracket through the fixing plate and the triangular support.

3. The ball screw driven mold moving mechanism according to claim 1, characterized in that: One side of the mold shifting ear is connected to the ball nut through a connecting plate, and two parallel protective plates are arranged between the connecting plate and the mold shifting ear. The two protective plates are respectively located on the upper and lower sides of the ball nut, and the other side of the mold shifting ear is fixedly connected to the top of the mold shifting via the mold shifting hanging plate.

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