Polishing and grinding device for machine frame of injection molding machine

Abstract

The invention discloses an injection molding machine rack polishing and grinding device which comprises a grinding mechanism and a grinding platform, the grinding platform comprises a base, a placing platform is arranged at the top of the base, a moving space is arranged between the base and the placing platform, a first bidirectional lead screw is arranged in the moving space and rotationally installed on a lifting frame, and a first screw rod is arranged in the first bidirectional lead screw; moving seats are installed on the two sides of the first two-way lead screw in a threaded mode, clamping mechanisms are arranged on the tops of the moving seats, moving grooves allowing the moving seats to move are formed in the containing platform, and the moving seats and the moving grooves are installed in a sliding mode; the two sides of the machine frame are limited and fixed through the positioning clamping plates, then the machine frame is turned over through the swing mechanism, the unpolished face of the machine frame is rotated to the upper portion, and the trouble of manual turning over is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding devices, especially to the technical field of polishing and grinding devices for the frame of an injection molding machine. Background Art

[0002] As the core structure for carrying the injection mold and mechanical transmission system, the welding and grinding processes of the frame of an injection molding machine directly affect the stability, precision and service life of the equipment. The frame of an injection molding machine is generally connected by welding process. After welding, it is necessary to grind the frame to remove the excess height of the weld seam and make the surface of the frame flat.

[0003] Currently, the weld seam is generally ground manually. This grinding method is labor-consuming. Moreover, after grinding one surface, it is necessary to manually turn it to another direction for grinding, which is very inconvenient and reduces the grinding efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and propose a polishing and grinding device for the frame of an injection molding machine, which can solve the above problems.

[0005] To achieve the above purpose, the present invention proposes a polishing and grinding device for the frame of an injection molding machine, including a grinding mechanism and a grinding platform. The grinding platform includes a base. A placement platform is provided at the top of the base, and a moving space is provided between the base and the placement platform. A first bidirectional lead screw is provided in the moving space. The first bidirectional lead screw is rotatably installed on a lifting frame. Moving seats are threadedly installed on both sides of the first bidirectional lead screw. A clamping mechanism is provided at the top of the moving seat. An activity groove for the movement of the moving seat is provided on the placement platform. The moving seat is slidably installed in the activity groove. The clamping mechanism includes a rotary mechanism. A positioning bracket is provided at the output end of the rotary mechanism. A second bidirectional lead screw is rotatably installed on the positioning bracket. Positioning clamping plates are threadedly installed on both sides of the second bidirectional lead screw. Positioning tracks are provided on both sides of the positioning bracket. The positioning clamping plates are slidably installed on the positioning tracks. The positioning clamping plates are perpendicular to the positioning bracket.

[0006] Preferably, the placement platform is fixedly connected to the base, and a lifting electric cylinder is installed on the base. The output end of the lifting electric cylinder is connected to the lifting frame.

[0007] Preferably, the rotary mechanism is a rotary cylinder.

[0008] Preferably, a driving block threadedly installed with the second bidirectional lead screw is provided in the middle of the positioning clamping plate, and positioning sliders slidably installed on the positioning tracks are provided on both sides of the positioning clamping plate. The driving block is located between the two positioning sliders.

[0009] Preferably, the grinding mechanism includes a robot, and a grinding tool is installed at the end of the robot.

[0010] Preferably, the bottom of the base is slidably installed on the translation guide rail.

[0011] Preferably, lifting brackets are provided on both sides of the grinding platform. A lifting cross beam is slidably installed on the lifting brackets. A moving track is provided on the lifting cross beam. A moving platform is slidably installed on the moving track. An installation bracket is provided at the bottom of the moving platform, and a fine grinding mechanism is installed at the bottom of the installation bracket.

[0012] Preferably, the fine grinding mechanism includes a mounting plate. Two grinding pulleys are rotatably installed below the mounting plate. A tensioning pulley is provided above the mounting plate. A grinding sand belt is wound around the outer peripheries of the grinding pulleys and the tensioning pulley. The tensioning pulley is rotatably installed on a tensioning bracket. The tensioning bracket is slidably installed on the mounting plate. A connecting plate is provided on the mounting plate, and a tensioning spring is provided between the connecting plate and the tensioning bracket.

[0013] Preferably, a displacement trigger mechanism is installed in the mounting plate. The displacement trigger mechanism includes a switch bracket fixed on the mounting plate. An adjusting column is threadedly installed on the switch bracket. A travel switch is fixed at the bottom of the adjusting column. The travel switch is located between the two grinding pulleys.

[0014] Preferably, a lifting cylinder is installed on the installation bracket, and an auxiliary grinding machine is installed at the output end of the lifting cylinder.

[0015] Advantages of the present invention: By using the positioning card plate to limit and fix both sides of the frame, and then using the slewing mechanism to turn over the frame and rotate its unground side upwards, the trouble of manual turning is eliminated; the present invention automatically grinds the weld by the grinding mechanism, reducing the labor input; the length dimension of the injection molding machine frame is generally large, and by moving the base along the translation guide rail, the weld at the next position can be automatically moved to the grinding station, with a high degree of automation; after the weld is initially ground by the robot, it is then secondarily ground by the fine grinding mechanism to make its surface flat and smooth; when the grinding sand belt encounters a part that has not been completely ground during grinding, the protruding remainder will cause the grinding sand belt to sink, thereby triggering the switch. After receiving the signal, the translation guide rail moves the frame to the auxiliary grinding machine at the rear for secondary cleaning.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 It is a schematic diagram of the grinding platform of the present invention; Figure 3 It is a schematic diagram of the frame turning of the present invention; Figure 4 It is a schematic diagram of the installation of the positioning card board of the present invention; Figure 5 It is a schematic diagram of the positioning bracket of the present invention; Figure 6 It is a schematic diagram of the fine grinding mechanism of the present invention; Figure 7 It is a schematic diagram of the grinding pulley of the present invention; Figure 8 It is a schematic diagram of the tensioning bracket of the present invention.

[0018] In the figure: 1, base; 2, placing platform; 3, moving seat; 4, clamping mechanism; 5, robot; 6, lifting bracket; 7, fine grinding mechanism; 8, grinding abrasive belt; 9, lifting cylinder; 11, lifting electric cylinder; 12, translation guide rail; 21, moving space; 22, first bidirectional lead screw; 23, lifting frame; 24, moving groove; 41, slewing mechanism; 42, positioning bracket; 43, second bidirectional lead screw; 44, positioning card board; 45, positioning track; 51, grinding tool; 61, lifting cross beam; Sixty-two, moving platform; 63, mounting bracket; 71, mounting plate; 72, grinding pulley; 73, tensioning pulley; 74, tensioning bracket; 75, connecting plate; 81, travel switch; 82, switch bracket; 83, adjusting column; 91, auxiliary grinding machine. Specific implementation mode

[0019] Embodiment 1 Refer to Figures 1 to 5 , an injection molding machine frame polishing and grinding device, including a grinding mechanism and a grinding platform. The grinding platform includes a base 1. A placing platform 2 is provided on the top of the base 1. A moving space 21 is provided between the base 1 and the placing platform 2. A first bidirectional lead screw 22 is provided in the moving space 21. The first bidirectional lead screw 22 is rotatably installed on the lifting frame 23. Moving seats 3 are threadedly installed on both sides of the first bidirectional lead screw 22. A clamping mechanism 4 is provided on the top of the moving seat 3. A moving groove 24 for the moving seat 3 to move is opened on the placing platform 2. The moving seat 3 is slidably installed with the moving groove 24. The clamping mechanism 4 includes a slewing mechanism 41. A positioning bracket 42 is provided at the output end of the slewing mechanism 41. A second bidirectional lead screw 43 is rotatably installed on the positioning bracket 42. Positioning card boards 44 are threadedly installed on both sides of the second bidirectional lead screw 43. Positioning tracks 45 are provided on both sides of the positioning bracket 42. The positioning card boards 44 are slidably installed on the positioning tracks 45. The positioning card boards 44 are perpendicular to the positioning bracket 42.

[0020] The placement platform 2 is fixedly connected to the base 1, and a lifting electric cylinder 11 is installed on the base 1. The output end of the lifting electric cylinder 11 is connected to the lifting frame 23.

[0021] The slewing mechanism 41 is a rotary cylinder.

[0022] A driving block threadedly installed with the second bidirectional lead screw 43 is provided in the middle of the positioning card board 44. Positioning sliders slidably installed on the positioning track 45 are provided on both sides of the positioning card board 44, and the driving block is located between the two positioning sliders.

[0023] The grinding mechanism includes a robot 5, and a grinding tool 51 is installed at the end of the robot 5.

[0024] Drive the first bidirectional lead screw to rotate, so that the positioning brackets on both sides approach each other to position the left and right sides of the frame. After the robot finishes grinding the weld on the first surface, drive the second bidirectional lead screw to rotate, so that the two positioning card boards approach each other to position the front and back sides of the frame. The lifting electric cylinder drives the lifting frame to rise, so that the bottom of the frame leaves the placement platform, and then the frame is driven to flip by the rotary cylinder. After the flipping is completed, the lifting frame descends, and the frame is placed on the placement platform. Then, the two positioning card boards release the limit on the frame, and the robot continues to grind.

[0025] Embodiment 2 Refer to Figures 6 to 8 , the bottom of the base 1 is slidably installed on the translation guide rail 12.

[0026] Lifting brackets 6 are provided on both sides of the grinding platform. A lifting cross beam 61 is slidably installed on the lifting brackets 6. A moving track is provided on the lifting cross beam 61. A moving platform 62 is slidably installed on the moving track. An installation bracket 63 is provided at the bottom of the moving platform 62, and a fine grinding mechanism 7 is installed at the bottom of the installation bracket 63.

[0027] The fine grinding mechanism 7 includes a mounting plate 71. Two groups of grinding belt pulleys 72 are rotatably installed below the mounting plate 71. A tensioning belt pulley 73 is provided above the mounting plate 71. A grinding sand belt 8 is wound around the outer circumferences of the grinding belt pulleys 72 and the tensioning belt pulley 73. The tensioning belt pulley 73 is rotatably installed on a tensioning bracket 74. The tensioning bracket 74 is slidably installed on the mounting plate 71. A connecting plate 75 is provided on the mounting plate 71, and a tensioning spring is provided between the connecting plate 75 and the tensioning bracket 74.

[0028] A displacement trigger mechanism is installed inside the mounting plate 71. The displacement trigger mechanism includes a switch bracket 82 which is fixed on the mounting plate 71. An adjusting column 83 is threadedly installed on the switch bracket 82. A travel switch 81 is fixed to the bottom of the adjusting column 83. The travel switch 81 is located between two grinding pulleys 72.

[0029] A lifting cylinder 9 is installed on the mounting bracket 63. The output end of the lifting cylinder 9 is installed with an auxiliary grinding machine 91.

[0030] The rest is the same as in Embodiment 1.

[0031] After the robot grinds the weld seam, the translation guide rail moves the machine frame to the front fine grinding mechanism, and the surface is finely ground by the grinding sand belt. When encountering a convex part, the convex part will cause the grinding sand belt to dent, thereby triggering the travel switch. After the controller detects that the travel switch is triggered, the fine grinding is paused, and the position is moved to the lower part of the auxiliary grinding machine at the rear through the translation guide rail. Then, the lifting cylinder is controlled to extend, so that the auxiliary grinding machine performs secondary grinding on this position. After the grinding is completed, it is moved back to the front for fine grinding again.

[0032] The above embodiments are descriptions of the present invention, not limitations on the present invention. Any solution obtained by simply transforming the present invention belongs to the protection scope of the present invention.

Claims

1. An injection molding machine frame polishing and grinding device, characterized in that: It includes a grinding mechanism and a grinding platform. The grinding platform includes a base (1). A placement platform (2) is provided on the top of the base (1). A moving space (21) is provided between the base (1) and the placement platform (2). A first bidirectional lead screw (22) is provided in the moving space (21). The first bidirectional lead screw (22) is rotatably installed on a lifting frame (23). Moving seats (3) are threadedly installed on both sides of the first bidirectional lead screw (22). A clamping mechanism (4) is provided on the top of the moving seat (3). An activity slot (24) for the movement of the moving seat (3) is formed on the placement platform (2). The moving seat (3) is slidably installed in the activity slot (24). The clamping mechanism (4) includes a rotary mechanism (41). A positioning bracket (42) is provided at the output end of the rotary mechanism (41). A second bidirectional lead screw (43) is rotatably installed on the positioning bracket (42). Positioning clamping plates (44) are threadedly installed on both sides of the second bidirectional lead screw (43). Positioning tracks (45) are provided on both sides of the positioning bracket (42). The positioning clamping plates (44) are slidably installed on the positioning tracks (45). The positioning clamping plates (44) are arranged perpendicular to the positioning bracket (42).

2. The polishing and grinding device for the injection molding machine frame according to claim 1, characterized in that: The placement platform (2) is fixedly connected to the base (1). A lifting electric cylinder (11) is installed on the base (1). The output end of the lifting electric cylinder (11) is connected to the lifting frame (23).

3. The injection molding machine frame polishing and grinding device according to claim 1, characterized in that: The rotary mechanism (41) is a rotary cylinder.

4. The polishing and grinding device for the injection molding machine frame according to claim 1, characterized in that: A driving block threadedly installed with the second bidirectional lead screw (43) is provided in the middle of the positioning clamping plate (44). Positioning sliders slidably installed with the positioning tracks (45) are provided on both sides of the positioning clamping plate (44). The driving block is located between the two positioning sliders.

5. The polishing and grinding device for the injection molding machine frame according to claim 1, wherein: The grinding mechanism includes a robot (5). A grinding tool (51) is installed at the end of the robot (5).

6. The polishing and grinding device for the injection molding machine frame according to claim 1, wherein: The bottom of the base (1) is slidably installed on a translation guide rail (12).

7. The polishing and grinding device for the injection molding machine frame according to claim 1, characterized in that: Lifting brackets (6) are provided on both sides of the grinding platform. A lifting cross beam (61) is slidably installed on the lifting brackets (6). A moving track is provided on the lifting cross beam (61). A moving platform (62) is slidably installed on the moving track. An installation bracket (63) is provided at the bottom of the moving platform (62). A fine grinding mechanism (7) is installed at the bottom of the installation bracket (63).

8. The polishing and grinding device for the injection molding machine frame according to claim 7, characterized in that: The fine grinding mechanism (7) includes a mounting plate (71). Two groups of grinding pulleys (72) are rotatably installed below the mounting plate (71). A tensioning pulley (73) is provided above the mounting plate (71). A grinding abrasive belt (8) surrounds the outer peripheries of the grinding pulleys (72) and the tensioning pulley (73). The tensioning pulley (73) is rotatably installed on a tensioning bracket (74). The tensioning bracket (74) is slidably installed on the mounting plate (71). A connecting plate (75) is provided on the mounting plate (71). A tensioning spring is provided between the connecting plate (75) and the tensioning bracket (74).

9. The polishing and grinding device for the injection molding machine frame according to claim 8, wherein: A displacement triggering mechanism is installed inside the mounting plate (71). The displacement triggering mechanism includes a switch bracket (82) which is fixed on the mounting plate (71). An adjusting column (83) is threadedly installed on the switch bracket (82). A travel switch (81) is fixed to the bottom of the adjusting column (83). The travel switch (81) is located between two grinding pulleys (72).

10. The polishing and grinding device for the injection molding machine frame according to claim 9, characterized in that: A lifting cylinder (9) is installed on the mounting bracket (63). The output end of the lifting cylinder (9) is installed with an auxiliary grinding machine (91).

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