Knife knife replacing structure of hand-cranking surface grinding machine

Abstract

The utility model discloses a grinding knife replacement structure of a hand-cranking surface grinding machine, which comprises a grinding machine body, a processing table mounted at the upper end of the grinding machine body, a mounting plate mounted at the upper end of the processing table, and a bracket mounted at the outer end of the mounting plate and positioned above the processing table, the grinding knife is mounted in the bracket; the driving device is mounted at the front end of the bracket; and the supporting device is mounted at the rear end of the bracket. According to the grinding knife replacing structure of the hand-cranking surface grinding machine, the inserting rod in the supporting device is clamped with the inserting groove in the second butt-joint disc, the effect of limiting and supporting the grinding knife is achieved, then the transverse rod is clamped with the clamping groove in the first butt-joint disc, the whole grinding knife can be driven to rotate when the motor is started, and the grinding knife replacing structure of the hand-cranking surface grinding machine is used for replacing the grinding knife. And when the grinding knife needs to be replaced, the hydraulic telescopic rod is started to contract, so that the inserting rod can be driven to be separated from the second butt joint disc, the grinding knife can be replaced conveniently, and the whole support does not need to be disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, in particular to a knife sharpening and replacement structure for a hand-cranked surface grinder. Background Art

[0002] A hand-cranked surface grinder is a type of grinder that is mainly used for grinding workpiece surfaces. Hand-cranked grinders are suitable for machining workpieces of smaller sizes and higher precision, and can machine various special-shaped workpieces including curved surfaces, planes, grooves, etc.

[0003] When a hand-cranked surface grinder is performing grinding and polishing operations, it is mainly completed by a grinder (also called a grinding wheel). The grinder can perform rough grinding, semi-fine grinding and fine grinding, as well as grooving and cutting on the outer circle, inner circle, plane and various surfaces of metal or non-metal workpieces at high speed. However, after long-term use, the grinder will gradually wear out, causing the grinder to become a consumable and need to be replaced regularly.

[0004] When the sharpening knife is replaced currently, the bracket on which the sharpening knife is installed needs to be disassembled as a whole, the old sharpening knife is replaced, and the bracket is reassembled after the new sharpening knife is replaced. The operation is relatively cumbersome. Therefore, a sharpening knife replacement structure for a hand-cranked surface grinder is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a knife sharpening replacement structure for a hand-cranked surface grinder, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hand-cranked surface grinder blade replacement structure comprises a grinder body, a processing table is installed on the upper end of the grinder body, a mounting plate is installed on the upper end of the processing table, and further comprises:

[0008] A bracket, which is mounted on the outer end of the mounting plate and is located above the processing table;

[0009] a sharpening knife, which is mounted inside the stand;

[0010] A driving device, which is mounted on the front end of the bracket;

[0011] The supporting device is installed at the rear end of the bracket.

[0012] Preferably, the front end of the knife sharpener is fixedly connected to a first docking plate, and the rear end of the knife sharpener is fixedly connected to a second docking plate.

[0013] Preferably, the driving device further comprises a motor mounted on the outer end of the bracket, the front inner wall of the bracket is rotatably connected to a driving disk, and one end of the driving disk close to the sharpening knife is fixedly connected to a cross bar.

[0014] Preferably, the supporting device also includes two groups of hydraulic telescopic rods fixedly connected to the inner wall of the rear end of the bracket, the output end of the hydraulic telescopic rod is fixedly connected to a mounting ring, the inner side of the mounting ring is rotatably connected to a support block, the interior of the support block is annularly installed with six groups of return springs, the outer end of the return spring is fixedly connected to a plug rod close to the sharpening knife, and the plug rod is slidably connected to the interior of the support block.

[0015] Preferably, a slot is provided on a side of the first docking plate close to the driving device, and the slot is engaged with the cross bar.

[0016] Preferably, six groups of slots are provided on a side of the second docking plate close to the supporting device, and the slots are engaged with the insertion rods.

[0017] Preferably, a plurality of balls are movably connected to the inner side of the mounting ring, and the balls are distributed in a ring shape on the outer side of the supporting block.

[0018] Preferably, six groups of paddles are evenly mounted on one side of the outer end of the support block close to the second docking plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a knife replacement structure for a hand-cranked surface grinder, which achieves the effect of limiting support for the knife grinder by clamping an insertion rod in a supporting device with a slot on a second docking plate, and then clamping a cross bar with a clamping slot on the first docking plate, so that the knife grinder can be driven to rotate as a whole when the motor is started. When the knife grinder needs to be replaced, the hydraulic telescopic rod is started to contract, which can drive the insertion rod to separate from the second docking plate, so that the knife grinder can be replaced without disassembling the entire bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the side cross-sectional structure of the connection between the mounting ring and the support block of the utility model;

[0024] Figure 4 It is a side cross-sectional structural schematic diagram of the connection between the cross bar and the first docking plate of the utility model.

[0025] In the figure: 1. grinder body; 11. processing table; 12. mounting plate; 2. bracket; 3. grinder; 31. first docking plate; 32. second docking plate; 4. motor; 41. drive plate; 42. cross bar; 51. hydraulic telescopic rod; 52. mounting ring; 53. support block; 54. reset spring; 55. plug rod; 6. ball bearing; 7. pick. DETAILED DESCRIPTION

[0026] 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.

[0027] A hand-cranked surface grinder blade replacement structure, such as Figure 1 A grinding machine body 1 is provided with a processing table 11 at the upper end of the grinding machine body 1, a mounting plate 12 is provided at the upper end of the processing table 11, a bracket 2 is provided at the outer end of the mounting plate 12, the bracket 2 is located above the processing table 11, a grinder 3 is provided inside the bracket 2, and the workpiece placed on the processing table 11 is ground by the grinder 3.

[0028] In this embodiment, if Figure 2 and Figure 4 A driving device is provided at the front end of the bracket 2 to provide driving force for the rotation of the knife grinder 3, wherein the driving device is composed of a motor 4, a driving disk 41 and a cross bar 42. The motor 4 is fixed at the outer end of the bracket 2, and the driving disk 41 is rotatably connected to the inside of the front end of the bracket 2. The cross bar 42 is fixed to the end of the driving disk 41 close to the knife grinder 3, and can drive the driving disk 41 and the cross bar 42 to rotate when the motor 4 is started. At the same time, a first docking disk 31 is fixed at the front end of the knife grinder 3, and a card slot is provided on the side of the first docking disk 31 close to the driving device, which is connected with the cross bar 42 through the card slot. When the driving disk 41 rotates, the cross bar 42 can be used to drive the knife grinder 3 to rotate.

[0029] In a further embodiment, Figure 2 and Figure 3, a supporting device is provided at the rear end of the bracket 2, wherein the supporting device is composed of a hydraulic telescopic rod 51, a mounting ring 52, a support block 53, a return spring 54 and an insertion rod 55. The number of the hydraulic telescopic rod 51 is two groups, and is fixed on the inner wall of the rear end of the bracket 2. The mounting ring 52 is fixed to the output end of the hydraulic telescopic rod 51, and the support block 53 is rotatably connected to the inner side of the mounting ring 52. The number of the return spring 54 is six groups, and is arranged in a ring shape inside the support block 53. The return spring 54 is fixed to one end of the support block 53 close to the sharpener 3. At the same time, a second docking plate 32 is fixed to the rear end of the sharpener 3, and a slot is provided on one side of the second docking plate 32 close to the supporting device. The number of the slots is six groups, and the slots are connected with the insertion rod 55. When the hydraulic telescopic rod 51 is started and the mounting ring 52 is driven to translate to the side close to the sharpener 3, the slot and the insertion rod 55 are connected to support the sharpener 3 as a whole, and the sharpener 3 is supported without affecting the rotation state of the sharpener 3 itself.

[0030] When the sharpener 3 needs to be replaced or disassembled, the hydraulic telescopic rod 51 is started to retract, so that the mounting ring 52 drives the support block 53 to translate to the side away from the sharpener 3. When the insertion rod 55 is separated from the slot on the second docking plate 32, the sharpener 3 can be taken out of the bracket 2 for replacement.

[0031] Furthermore, a paddle 7 is fixed to one side of the outer end of the mounting ring 52 close to the second docking plate 32. There are six paddles 7 in total, which can drive the support block 53 to rotate when the paddle 7 is pushed. When the support device is needed to support the sharpener 3, the insertion rod 55 will not be engaged with the slot on the second docking plate 32 after approaching the second docking plate 32, so that the insertion rod 55 will slide into the support block 53 after contacting the second docking plate 32, and the reset spring 54 will contract. At this time, the paddle 7 will be pushed, and the support block 53 will rotate. When the insertion rod 55 corresponds to the slot on the second docking plate 32, the reset spring 54 will push the insertion rod 55 out through the elastic force and engage it with the corresponding slot on the second docking plate 32.

[0032] In another embodiment, if Figure 2 and Figure 3 The inner side of the mounting ring 52 is movably connected with a ball 6, and the number of the ball 6 is several and distributed in a ring shape on the outer side of the support block 53, which can drive the ball 6 to slide when the support block 53 rotates, thereby reducing the friction between the support block 53 and the mounting ring 52.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool replacement structure for a hand-cranked surface grinder, comprising a grinder body (1), a processing table (11) being mounted on the upper end of the grinder body (1), and a mounting plate (12) being mounted on the upper end of the processing table (11), characterized in that: Also includes: A bracket (2) mounted on the outer end of the mounting plate (12) and located above the processing table (11); A sharpener (3) mounted inside the support (2); A driving device, which is mounted on the front end of the bracket (2); A supporting device is installed at the rear end of the bracket (2).

2. The tool replacement structure for a hand-cranked surface grinder according to claim 1, characterized in that: The front end of the knife sharpener (3) is fixedly connected to a first docking plate (31), and the rear end of the knife sharpener (3) is fixedly connected to a second docking plate (32).

3. The tool replacement structure for a hand-cranked surface grinder according to claim 1, characterized in that: The driving device further comprises a motor (4) mounted on the outer end of the bracket (2); a driving disc (41) is rotatably connected to the inner wall of the front end of the bracket (2); and a crossbar (42) is fixedly connected to one end of the driving disc (41) close to the sharpening knife (3).

4. The tool replacement structure for a hand-cranked surface grinder according to claim 1 is characterized in that: The support device further comprises two groups of hydraulic telescopic rods (51) fixedly connected to the inner wall of the rear end of the bracket (2); the output end of the hydraulic telescopic rod (51) is fixedly connected to a mounting ring (52); the inner side of the mounting ring (52) is rotatably connected to a support block (53); six groups of return springs (54) are annularly installed inside the support block (53); the outer end of the return spring (54) is fixedly connected to a plug rod (55) on a side close to the sharpening knife (3); and the plug rod (55) is slidably connected to the inside of the support block (53).

5. The tool replacement structure for a hand-cranked surface grinder according to claim 2, characterized in that: A clamping groove is provided on a side of the first docking plate (31) close to the driving device, and the clamping groove is clamped with the cross bar (42).

6. The tool replacement structure for a hand-cranked surface grinder according to claim 2, characterized in that: The second docking plate (32) is provided with six groups of slots on a side close to the supporting device, and the slots are engaged with the insertion rods (55).

7. The tool replacement structure for a hand-cranked surface grinder according to claim 4, characterized in that: A plurality of balls (6) are movably connected to the inner side of the mounting ring (52), and the balls (6) are distributed in a ring shape on the outer side of the supporting block (53).

8. The tool replacement structure for a hand-cranked surface grinder according to claim 4, characterized in that: Six groups of paddles (7) are evenly mounted on one side of the outer end of the support block (53) close to the second docking plate (32).

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