Mechanism for preventing driving hook from falling off

Abstract

The utility model discloses a mechanism for preventing a driving hook from falling off, which comprises a lower grinding disc, an upper grinding disc and a guide support, the upper grinding disc is arranged above the lower grinding disc through a lifting support and a hydraulic cylinder, a limit rod is arranged in the middle of the upper side of the upper grinding disc and penetrates through the guide support in a sliding mode, and a limit plate is arranged at the upper end of the limit rod. A limiting rod is arranged at the lower end of the guide support, a first locking groove is formed in the upper side of the limiting rod, a first check block is elastically arranged in the lower end of the guide support in a sliding mode, a second check block is arranged at one end of the first check block through a connecting plate, and a cam ejector rod mechanism is arranged on the outer side of the guide support. And meanwhile, a first check block is elastically and slidably arranged in the lower end of the guide support, when the upper grinding disc and the limiting rod move downwards, one end of the limiting rod is transversely inserted into a first locking groove under the action of a spring, and therefore the limiting rod can be locked, and the situation that the swing check block bounces up when the upper disc and the lower disc are oppositely ground is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, in particular to a mechanism for preventing a driving hook from falling off. Background Art

[0002] A grinder is a machine that grinds the surface of a workpiece with a grinding tool coated or embedded with abrasives. It is mainly used to grind high-precision planes, internal and external cylindrical surfaces, conical surfaces, spherical surfaces, threaded surfaces and other surfaces in the workpiece. It is used for single-sided grinding and polishing of materials. The plane grinder is a precision grinding and polishing equipment. The material to be ground and polished is placed on a flat grinding disc, which rotates counterclockwise. The correction wheel drives the workpiece to rotate. The workpiece is pressed by gravity or other means. The workpiece and the grinding disc are in relative rotation and friction to achieve the purpose of grinding and polishing. The upper and lower discs of the double-sided grinder rotate in different directions. Due to the inconsistent height of the workpiece, a resonance effect is generated when it rotates, causing the upper disc fixed hook to bounce up during the vibration process.

[0003] A double-disc grinder for PCB board production with application number 202210574528.4 in the prior art includes a machine body, a plurality of chassis moving components are arranged in a circular array on the turntable, and the grinding components are symmetrically arranged on the machine body, so as to grind the surface of the PCB board. At the same time, in the structural design, the chassis moving component can flip the PCB board. After grinding one side of the PCB board, the chassis moving component flips the PCB board and then grinds the other side of the PCB board through another grinding component. The turntable moves the PCB board, and then grinds the two sides of the PCB board through two grinding wheels, which effectively improves the grinding speed of the PCB board and improves the production efficiency. However, the swing of the upper grinding disc when the upper and lower discs are grinding each other can easily cause the block to bounce up, thereby affecting the structural stability of the upper grinding disc for grinding. Utility Model Content

[0004] The utility model aims to provide a mechanism to prevent the driving hook from falling off, so as to solve the problem in the prior art that the swing of the upper grinding disc when the upper and lower discs are grinding against each other easily causes the block to bounce up, thereby affecting the structural stability of the upper grinding disc during grinding.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanism to prevent the driving hook from falling off, comprising a lower grinding disc, an upper grinding disc and a guide support, the upper grinding disc is arranged above the lower grinding disc through a lifting bracket and a hydraulic cylinder, a limit rod is provided in the middle of the upper side of the upper grinding disc, and the limit rod slides through the guide support, a limit plate is provided at the upper end of the limit rod, a first locking groove is provided on the upper side of the limit rod, a first block is elastically slidably provided inside the lower end of the guide support, one end of the first block is provided with a second block through a connecting plate, and one end of the second block is inserted into and matched with the second locking groove on the outer side of the limit plate, and a cam push rod mechanism is provided on the outer side of the guide support.

[0006] Furthermore, the guide support is fixedly welded to one side of the grinding upper frame, and a guide hole is opened in the middle of the guide support.

[0007] Furthermore, a limiting sliding groove is provided inside the guide support, and one end of the first stopper is elastically inserted into the guide support through a limiting support plate and a spring.

[0008] Furthermore, one end of each of the first stopper and the second stopper is vertically welded to the connecting plate, and one end of each of the first stopper and the second stopper is hemispherical.

[0009] Furthermore, the cam push rod mechanism includes a cam rotatably provided through a side wall support and a rotating shaft, one end of the rotating shaft is connected to a motor through a gear set, and the cam is arranged closely to the inner side of the connecting plate.

[0010] Furthermore, the motor is fixedly mounted outside the side wall support, and the gear set adopts a reduction gear.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model has a first locking groove provided on the upper side of the limit rod, and a first stop block is elastically slidably provided inside the lower end of the guide support. When the upper grinding disc and the limit rod move downward, one end of the limit rod is laterally inserted into the first locking groove under the action of the spring, so that the limit rod can be locked, effectively preventing the stop block from bouncing up due to the swing of the upper grinding disc when the upper and lower discs are grinding against each other, thereby facilitating the improvement of the structural stability of the upper grinding disc during grinding, which is beneficial to improving the grinding accuracy.

[0013] The utility model also provides a second stopper at one end of the first stopper through a connecting plate, and one end of the second stopper is inserted and matched with a second locking groove on the outer side of the limit plate, so that the limit plate at one end of the limit rod can be limited, which is beneficial to further improve the structural stability of the upper grinding disc when used for grinding.

[0014] The utility model provides a cam push rod mechanism on the outer side of the guide support, and the cam push rod mechanism includes a cam that is rotatably provided through the side wall support and the rotating shaft, one end of the rotating shaft is connected to the motor through a gear set, and the cam is arranged closely to the inner side of the connecting plate, so that the rotating shaft and the cam are driven to rotate by the motor and the gear set, and the connecting plate can be squeezed, so that the first block and the second block move to fall off the corresponding locking groove, thereby facilitating the disassembly of the first block and the second block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is the overall structural front view of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure of the stopper and the connection plate of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the cam push rod mechanism of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0020] In the figure: 1. lower grinding disc; 2. upper grinding disc; 3. lifting bracket; 4. hydraulic cylinder; 5. limit rod; 6. guide support; 7. limit plate; 8. connecting plate; 9. second stopper; 10. first stopper; 11. first locking groove; 12. second locking groove; 13. limit support plate; 14. spring; 15. limit slide groove; 16. side wall support; 17. cam; 18. rotating shaft; 19. gear set; 20. motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model discloses a mechanism for preventing the driving hook from falling off, comprising a lower grinding disc 1, an upper grinding disc 2 and a guide support 6. The upper grinding disc 2 is arranged above the lower grinding disc 1 through a lifting bracket 3 and a hydraulic cylinder 4. A limiting rod 5 is arranged in the middle of the upper side of the upper grinding disc 2, and the limiting rod 5 slides through the guide support 6. The guide support 6 is fixedly welded to one side of the grinding upper frame. A guide hole is opened in the middle of the guide support 6. A limiting plate 7 is arranged at the upper end of the limiting rod 5. A first locking groove 11 is arranged on the upper side of the limiting rod 5. A first stopper 10 is elastically slidably arranged inside the lower end of the guide support 6, so that when the upper grinding disc 2 can make one end of the limiting rod 5 transversely inserted into the first locking groove 11 under the action of a spring 14, the limiting rod 5 can be locked, effectively preventing the upper grinding disc 2 from swinging when the upper and lower discs are grinding, causing the stopper to bounce up, thereby facilitating the improvement of the structural stability of the upper grinding disc 2 for grinding, and facilitating the improvement of the grinding accuracy.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, in order to further improve the structural stability of the upper grinding disc 2 during grinding, a second stop block 9 is provided at one end of the first stop block 10 through a connecting plate 8, and one end of the second stop block 9 is inserted and matched with a second locking groove 12 on the outer side of the limiting plate 7, so that the limiting plate 7 at one end of the limiting rod 5 can be limited, which is beneficial to further improve the structural stability of the upper grinding disc 2 during grinding.

[0024] like Figure 2 , Figure 3 and Figure 4 As shown, in order to facilitate the disassembly of the first stopper 10 and the second stopper 9, a cam push rod mechanism is provided on the outer side of the guide support 6, and the cam push rod mechanism includes a cam 17 that is rotatably provided through the side wall support 16 and the rotating shaft 18. One end of the rotating shaft 18 is connected to the motor 20 through a gear set 19. The cam 17 is arranged close to the inner side of the connecting plate 8. A limiting slide groove 15 is provided inside the guide support 6, and one end of the first stopper 10 is elastically inserted in the guide support 6 through a limiting support plate 13 and a spring 14, so that the first stopper 10 can be elastically slid in the guide support 6 laterally. The motor 20 is fixedly installed on the outside of the side wall support 16. The gear set 19 adopts a reduction gear, so that the rotating shaft 18 and the cam 17 are driven to rotate by the motor 20 and the gear set 19, which can squeeze the connecting plate 8, so that the first stopper 10 and the second stopper 9 move out of the corresponding locking groove, thereby facilitating the disassembly of the first stopper 10 and the second stopper 9.

[0025] like Figure 1 and Figure 2 As shown, one end of the first stopper 10 and the second stopper 9 are vertically welded to the connecting plate 8, and one end of the first stopper 10 and the second stopper 9 are both hemispherical, so that the locking structure of the first stopper 10 and the second stopper 9 has high stability and is convenient and quick to disassemble and assemble.

[0026] The working principle and use process of the utility model are as follows: when in use, through the first locking groove 11 provided on the upper side of the limit rod 5, a first stop block 10 is elastically slidably provided inside the lower end of the guide support 6. When the upper grinding disc 2 and the limit rod 5 move downward, one end of the limit rod 5 is laterally inserted into the first locking groove 11 under the action of the spring 14, so that the limit rod 5 can be locked, effectively preventing the upper grinding disc 2 from swinging when the upper and lower discs are grinding against each other and causing the stop block to bounce up, thereby facilitating the improvement of the structural stability of the upper grinding disc 2 during grinding, which is beneficial to improving the accuracy of grinding.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mechanism for preventing a driving hook from falling off, comprising a lower grinding disc (1), an upper grinding disc (2) and a guide support (6), characterized in that: The upper grinding disc (2) is arranged above the lower grinding disc (1) through a lifting bracket (3) and a hydraulic cylinder (4); a limit rod (5) is provided at the middle of the upper side of the upper grinding disc (2), and the limit rod (5) slides through the guide support (6); a limit plate (7) is provided at the upper end of the limit rod (5); a first locking groove (11) is provided at the upper side of the limit rod (5); a first stopper (10) is elastically slidably provided inside the lower end of the guide support (6); a second stopper (9) is provided at one end of the first stopper (10) through a connecting plate (8), and one end of the second stopper (9) is inserted and matched with a second locking groove (12) on the outer side of the limit plate (7); and a cam push rod mechanism is provided on the outer side of the guide support (6).

2. The mechanism for preventing the driving hook from falling off according to claim 1, characterized in that: The guide support (6) is fixedly welded to one side of the grinding upper frame, and a guide hole is provided in the middle of the guide support (6).

3. The anti-drop mechanism for driving hook according to claim 1, characterized in that: A limiting sliding groove (15) is provided inside the guide support (6), and one end of the first stopper (10) is elastically inserted into the guide support (6) via a limiting support plate (13) and a spring (14).

4. The mechanism for preventing the driving hook from falling off according to claim 3, characterized in that: One end of the first stopper (10) and one end of the second stopper (9) are both vertically welded to the connecting plate (8); one end of the first stopper (10) and one end of the second stopper (9) are both hemispherical.

5. The mechanism for preventing the driving hook from falling off according to claim 1, characterized in that: The cam push rod mechanism comprises a cam (17) rotatably provided via a side wall support (16) and a rotating shaft (18); one end of the rotating shaft (18) is transmission-connected to a motor (20) via a gear set (19); and the cam (17) is arranged in close contact with the inner side of the connecting plate (8).

6. The mechanism for preventing the driving hook from falling off according to claim 5, characterized in that: The motor (20) is fixedly mounted outside the side wall support (16), and the gear set (19) adopts a reduction gear.

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