Positioning structure of bench drilling machine

Abstract

The positioning structure of the bench drilling machine comprises a first working table and a second working table, the first working table is fixedly arranged on the upper surface of the second working table, and a pressing device, an avoiding device and a protection device are arranged on the first working table. The pressing device comprises a lifting air cylinder, a lifting plate, two sets of first pressing mechanisms and two sets of second pressing mechanisms, and the two sets of first pressing mechanisms and the two sets of second pressing mechanisms are arranged and installed on the upper surface of the lifting plate. The lifting plate can be driven to move up and down through the lifting air cylinder, the first pressing mechanism and the second pressing mechanism are driven to move up and down, and a workpiece is pressed and fixed through the first pressing mechanism and the second pressing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling machine positioning, and in particular to a positioning structure of a desktop drilling machine. Background Art

[0002] When a bench-type drilling machine processes a workpiece, the workpiece is generally placed on the workbench, positioned by the main positioning pin and the auxiliary positioning pin, and clamped by multiple clamps to achieve positioning and fixation of the workpiece. In the prior art, multiple clamps need to be clamped in turn by workers when in use, and workers need to open them in turn when taking materials, which is time-consuming and labor-intensive, and has low processing efficiency; in addition, after the clamp is opened, due to the close distance between the clamp and the workpiece, when the workpiece is moved upward away from the positioning pin, the workpiece is easy to collide with the clamp, and even easy to cause wear of the workpiece, affecting the appearance of the workpiece; at the same time, the drilling machine will generate debris when processing the workpiece, and the debris is easy to splash into the gap of the clamp, affecting the normal opening and closing of the clamp. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a positioning structure of a bench-type drilling machine to solve the technical problems mentioned in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning structure of a bench drilling machine, comprising a first workbench and a second workbench, the first workbench is fixedly arranged on the upper surface of the second workbench, a clamping device, a avoidance device and a protective device are arranged on the first workbench, the clamping device comprises a lifting cylinder, a lifting plate, a first clamping mechanism and a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are each provided with two groups, and are both arranged on the upper surface of the lifting plate, the avoidance device comprises a first rotating shaft, a second rotating shaft, a first gear, a second gear, a movable plate, a first linkage mechanism and a second linkage mechanism, the first rotating shaft and the second rotating shaft are both rotatably arranged on the upper surface of the lifting plate, the first gear and the second gear are respectively fixedly sleeved on the outside of the first rotating shaft and the second rotating shaft, the movable plate and the upper surface of the lifting plate are slidably connected, and a first rack and a second rack are respectively arranged on both sides of the movable plate, the first rack and the second rack are respectively meshed with the first gear and the second gear.

[0005] The utility model is further configured such that the first rotating shaft and the two groups of the first clamping mechanisms are connected via the first linkage mechanism, and the second rotating shaft and the two groups of the second clamping mechanisms are connected via the second linkage mechanism.

[0006] The utility model is further configured such that the first clamping mechanism includes a rotating rod, a connecting plate, a connecting rod and a clamping block; the rotating rod is rotatably arranged on the upper surface of the lifting plate, and its top end passes through the first workbench and is rotatably connected to the first workbench; the two ends of the connecting plate are respectively fixedly connected to the rotating rod and the connecting rod, and the bottom end of the connecting rod is fixedly connected to the clamping block; the second clamping mechanism has the same structure as the first clamping mechanism.

[0007] The utility model is further configured such that the first linkage mechanism includes a first pulley, a second pulley, a third pulley, a fourth pulley, a first transmission belt and a second transmission belt, the first pulley and the third pulley are both fixedly mounted outside the first rotating shaft, the second pulley and the fourth pulley are respectively fixedly mounted outside the rotating rods in the two groups of the first clamping mechanisms, the first transmission belt is connected to the first pulley and the second pulley, and the second transmission belt is connected to the third pulley and the fourth pulley.

[0008] The utility model is further configured such that the second linkage mechanism has the same structure as the first linkage mechanism, and the first pulley and the third pulley in the second linkage mechanism are both fixedly sleeved outside the second rotating shaft, and the second pulley and the fourth pulley are respectively fixedly sleeved outside the rotating rods in the two groups of the second clamping mechanisms.

[0009] The utility model is further configured as follows: the protective device includes an accordion protective cover and a limit plate, the limit plate is rotatably sleeved outside the rotating rod, the accordion protective cover is sleeved outside the rotating rod, and the two ends of the accordion protective cover are respectively fixedly connected to the limit plate and the first workbench, a conical protective cover is fixedly sleeved outside the rotating rod, and the conical protective cover is arranged above the limit plate.

[0010] The utility model is further configured such that a plurality of first protective plates are provided between the first workbench and the second workbench, and a through slot is provided on one of the first protective plates, one end of the movable plate passes through the through slot, and a second protective plate is provided obliquely above the through slot.

[0011] The utility model is further configured such that the lifting cylinder is arranged on the lower surface of the second workbench, and its telescopic end passes through the second workbench and is connected to the lifting plate, a guide rod is provided on the lower surface of the lifting plate, and the bottom end of the guide rod passes through the second workbench and is slidably connected to the second workbench.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model is provided with two groups of first clamping mechanisms and two groups of second clamping mechanisms, and both are installed on the upper surface of the lifting plate. The lifting plate can be driven up and down by the lifting cylinder, driving the first clamping mechanism and the second clamping mechanism to move up and down, and the workpiece is clamped and fixed by the first clamping mechanism and the second clamping mechanism.

[0014] 2. The utility model is provided with an avoidance device. When the first clamping mechanism and the second clamping mechanism are lifted upward, the first rotating shaft and the second rotating shaft can be driven to rotate by pulling the movable plate, thereby driving the first clamping mechanism and the second clamping mechanism to rotate, so as to drive the clamping block away from the workpiece, thereby facilitating the removal of the workpiece from the workbench.

[0015] 3. The utility model is provided with a protective device, which uses an accordion protective cover to block the rotating and sliding connection between the rotating rod and the first workbench to prevent debris from entering the gap, and uses a conical protective cover to block the rotating connection between the limit plate and the rotating rod to prevent debris from entering; and the conical protective cover is arranged above the limit plate to prevent the conical protective cover and the accordion protective cover from interfering with each other when the rotating rod rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a positioning structure of a bench-type drilling machine in the utility model;

[0017] Figure 2 It is a schematic diagram of the connection state structure of the first pressing mechanism, the second pressing mechanism, the first linkage mechanism and the second linkage mechanism in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the first linkage mechanism and the second linkage mechanism in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the utility model in which the conical protective cover and the accordion protective cover are not connected;

[0020] Figure 5 It is a structural schematic diagram of the first clamping mechanism and the second clamping mechanism in the utility model being away from the workpiece.

[0021] In the figure: 1. first workbench; 2. second workbench; 3. lifting cylinder; 4. lifting plate; 5. first rotating shaft; 6. second rotating shaft; 7. first gear; 8. second gear; 9. moving plate; 10. first rack; 11. second rack; 12. rotating rod; 13. connecting plate; 14. connecting rod; 15. clamping block; 16. first pulley; 17. second pulley; 18. third pulley; 19. fourth pulley; 20. first transmission belt; 21. second transmission belt; 22. accordion protective cover; 23. limit plate; 24. conical protective cover; 25. first protective plate; 26. through groove; 27. second protective plate; 28. guide rod. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0025] See also Figure 1-5A positioning structure of a bench drilling machine comprises a first workbench 1 and a second workbench 2, the first workbench 1 is fixedly arranged on the upper surface of the second workbench 2, a clamping device, an avoidance device and a protective device are arranged on the first workbench 1, the clamping device comprises a lifting cylinder 3, a lifting plate 4, a first clamping mechanism and a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are both provided with two groups, and are both arranged on the upper surface of the lifting plate 4, the avoidance device comprises a first rotating shaft 5, a second rotating shaft 6, a first gear 7, a second gear 8, a moving plate 9, a first linkage mechanism and a second linkage mechanism, the first rotating shaft 5 and the second rotating shaft 6 are both rotatably arranged on the upper surface of the lifting plate 4, the first gear 7 and the second gear 8 are respectively fixedly sleeved on the outside of the first rotating shaft 5 and the second rotating shaft 6, the moving plate 9 is slidably connected to the upper surface of the lifting plate 4, and a first rack 10 and a second rack 11 are respectively arranged on both sides of the moving plate 9, and the first rack 10 and the second rack 11 are respectively meshed with the first gear 7 and the second gear 8. The first rotating shaft 5 and the two groups of first clamping mechanisms are connected via a first linkage mechanism, and the second rotating shaft 6 and the two groups of second clamping mechanisms are connected via a second linkage mechanism. The first clamping mechanism includes a rotating rod 12, a connecting plate 13, a connecting rod 14 and a clamping block 15. The rotating rod 12 is rotatably arranged on the upper surface of the lifting plate 4, and its top end penetrates the first workbench 1 and is rotatably connected to the first workbench 1. The two ends of the connecting plate 13 are fixedly connected to the rotating rod 12 and the connecting rod 14 respectively, and the bottom end of the connecting rod 14 is fixedly connected to the clamping block 15. The second clamping mechanism has the same structure as the first clamping mechanism. The first linkage mechanism includes a first pulley 16, a second pulley 17, a third pulley 18, a fourth pulley 19, a first transmission belt 20, and a second transmission belt 21. The first pulley 16 and the third pulley 18 are both fixedly sleeved outside the first rotating shaft 5, the second pulley 17 and the fourth pulley 19 are respectively fixedly sleeved outside the rotating rods 12 in the two sets of first clamping mechanisms, the first transmission belt 20 is connected to the first pulley 16 and the second pulley 17, and the second transmission belt 21 is connected to the third pulley 18 and the fourth pulley 19. The second linkage mechanism has the same structure as the first linkage mechanism, and the first pulley 16 and the third pulley 18 in the second linkage mechanism are both fixedly sleeved outside the second rotating shaft 6, and the second pulley 17 and the fourth pulley 19 are respectively fixedly sleeved outside the rotating rods 12 in the two sets of second clamping mechanisms. A plurality of first protective plates 25 are provided between the first workbench 1 and the second workbench 2, and a through slot 26 is provided on one of the first protective plates 25. One end of the movable plate 9 passes through the through slot 26, and a second protective plate 27 is provided obliquely above the through slot 26. The lifting cylinder 3 is provided on the lower surface of the second workbench 2, and its telescopic end passes through the second workbench 2 and is connected to the lifting plate 4. A guide rod 28 is provided on the lower surface of the lifting plate 4, and the bottom end of the guide rod 28 passes through the second workbench 2 and is slidably connected to the second workbench 2.

[0026] In this embodiment, the workpiece is placed on the first workbench 1, and the main positioning hole and the auxiliary positioning hole preset on the workpiece are inserted into the main positioning pin and the auxiliary positioning pin preset on the first workbench 1, and the movable plate 9 is pushed inward to drive the first rack 10 and the second rack 11 to move, drive the first gear 7 and the second gear 8 to rotate, and then drive the first rotating shaft 5 and the second rotating shaft 6 to rotate, drive the first pulley 16 and the third pulley 18 on the first rotating shaft 5 and the second rotating shaft 6 to rotate, and drive the rotating rod 12 to rotate through the first transmission belt 20 and the second transmission belt 21, drive the clamping block 15 to rotate above the workpiece, start the lifting cylinder 3, so that it drives the lifting plate 4 to move downward in the direction of the guide rod 28, drive the rotating rod 12 and the clamping block 15 to move downward, and clamp the workpiece through the clamping block 15 to achieve positioning and fixation of the workpiece.

[0027] See also Figure 1-5 As an implementation method of the protective device: the protective device includes an accordion protective cover 22 and a limit plate 23, the limit plate 23 is rotatably sleeved outside the rotating rod 12, the accordion protective cover 22 is sleeved outside the rotating rod 12, and the two ends of the accordion protective cover 22 are respectively fixedly connected to the limit plate 23 and the first workbench 1, a conical protective cover 24 is fixedly sleeved outside the rotating rod 12, and the conical protective cover 24 is arranged above the limit plate 23.

[0028] More specifically, when the rotating rod 12 rotates, the limit plate 23 is fixed relative to the first workbench 1 to prevent the accordion protective cover 22 from twisting. At this time, the rotating connection is protected by the conical protective cover 24. When the rotating rod 12 moves downward, the limit plate 23 moves downward relative to the first workbench 1, and the accordion protective cover 22 contracts, always protecting the connection between the rotating rod 12 and the first workbench 1.

[0029] In summary, when the positioning structure is in use: the workpiece is placed on the first workbench 1, and the preset main positioning hole and the auxiliary positioning hole on the workpiece are inserted into the main positioning pin and the auxiliary positioning pin preset on the first workbench 1, and the movable plate 9 is pushed inward, so that it drives the first rack 10 and the second rack 11 to move, and drives the first gear 7 and the second gear 8 to rotate, and then drives the first rotating shaft 5 and the second rotating shaft 6 to rotate, drives the first pulley 16 and the third pulley 18 on the first rotating shaft 5 and the second rotating shaft 6 to rotate, and drives the rotating rod 12 to rotate through the first transmission belt 20 and the second transmission belt 21, drives the clamping block 15 to rotate above the workpiece, starts the lifting cylinder 3, so that it drives the lifting plate 4 to move downward along the direction of the guide rod 28, drives the rotating rod 12 and the clamping block 15 to move downward, and clamps the workpiece through the clamping block 15 to achieve positioning and fixation of the workpiece.

[0030] When the rotating rod 12 rotates, the limit plate 23 is fixed relative to the first workbench 1 to prevent the accordion protective cover 22 from twisting. At this time, the rotating connection is protected by the conical protective cover 24. When the rotating rod 12 moves downward, the limit plate 23 moves downward relative to the first workbench 1, and the accordion protective cover 22 contracts, always protecting the connection between the rotating rod 12 and the first workbench 1.

[0031] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A positioning structure for a bench-type drilling machine, comprising a first workbench (1) and a second workbench (2), characterized in that: The first workbench (1) is fixedly arranged on the upper surface of the second workbench (2); the first workbench (1) is provided with a clamping device, an avoidance device and a protective device; the clamping device comprises a lifting cylinder (3), a lifting plate (4), a first clamping mechanism and a second clamping mechanism; the first clamping mechanism and the second clamping mechanism are both provided with two groups and are both arranged on the upper surface of the lifting plate (4); the avoidance device comprises a first rotating shaft (5), a second rotating shaft (6), a first gear (7), a second gear (8), a moving plate (9), a first clamping mechanism and a second clamping mechanism; A linkage mechanism and a second linkage mechanism, wherein the first rotating shaft (5) and the second rotating shaft (6) are both rotatably arranged on the upper surface of the lifting plate (4), the first gear (7) and the second gear (8) are respectively fixedly sleeved outside the first rotating shaft (5) and the second rotating shaft (6), the moving plate (9) and the upper surface of the lifting plate (4) are slidably connected, and the first rack (10) and the second rack (11) are respectively arranged on both sides of the moving plate (9), and the first rack (10) and the second rack (11) are respectively meshed with the first gear (7) and the second gear (8).

2. The positioning structure of a benchtop drilling machine according to claim 1 is characterized in that: The first rotating shaft (5) and the two groups of the first pressing mechanisms are connected via the first linkage mechanism, and the second rotating shaft (6) and the two groups of the second pressing mechanisms are connected via the second linkage mechanism.

3. The positioning structure of a benchtop drilling machine according to claim 2, characterized in that: The first clamping mechanism comprises a rotating rod (12), a connecting plate (13), a connecting rod (14) and a clamping block (15); the rotating rod (12) is rotatably arranged on the upper surface of the lifting plate (4), and its top end passes through the first workbench (1) and is rotatably connected to the first workbench (1); the two ends of the connecting plate (13) are respectively fixedly connected to the rotating rod (12) and the connecting rod (14); the bottom end of the connecting rod (14) is fixedly connected to the clamping block (15); and the second clamping mechanism has the same structure as the first clamping mechanism.

4. The positioning structure of a benchtop drilling machine according to claim 3 is characterized in that: The first linkage mechanism comprises a first pulley (16), a second pulley (17), a third pulley (18), a fourth pulley (19), a first transmission belt (20) and a second transmission belt (21); the first pulley (16) and the third pulley (18) are both fixedly sleeved outside the first rotating shaft (5); the second pulley (17) and the fourth pulley (19) are respectively fixedly sleeved outside the rotating rods (12) in the two groups of the first clamping mechanisms; the first transmission belt (20) is connected to the first pulley (16) and the second pulley (17); the second transmission belt (21) is connected to the third pulley (18) and the fourth pulley (19).

5. The positioning structure of a benchtop drilling machine according to claim 4 is characterized in that: The second linkage mechanism has the same structure as the first linkage mechanism, and the first pulley (16) and the third pulley (18) in the second linkage mechanism are both fixedly sleeved outside the second rotating shaft (6), and the second pulley (17) and the fourth pulley (19) are respectively fixedly sleeved outside the rotating rods (12) in the two sets of the second clamping mechanisms.

6. The positioning structure of a benchtop drilling machine according to claim 3 is characterized in that: The protective device comprises an accordion protective cover (22) and a limiting plate (23), wherein the limiting plate (23) is rotatably sleeved outside the rotating rod (12), the accordion protective cover (22) is sleeved outside the rotating rod (12), and the two ends of the accordion protective cover (22) are respectively fixedly connected to the limiting plate (23) and the first workbench (1), and a conical protective cover (24) is fixedly sleeved outside the rotating rod (12), and the conical protective cover (24) is arranged above the limiting plate (23).

7. The positioning structure of a benchtop drilling machine according to claim 1 is characterized in that: A plurality of first protective plates (25) are provided between the first workbench (1) and the second workbench (2), and a through slot (26) is provided on one of the first protective plates (25), one end of the movable plate (9) passes through the through slot (26), and a second protective plate (27) is provided obliquely above the through slot (26).

8. The positioning structure of a benchtop drilling machine according to claim 1, characterized in that: The lifting cylinder (3) is arranged on the lower surface of the second workbench (2), and its telescopic end passes through the second workbench (2) and is connected to the lifting plate (4). A guide rod (28) is provided on the lower surface of the lifting plate (4), and the bottom end of the guide rod (28) passes through the second workbench (2) and is slidably connected to the second workbench (2).

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