A tool fixing device of an automatic tool sharpener

Abstract

The utility model belongs to the tool fixing technical field, concretely relates to a tool fixing device of automatic knife grinder, including the organism, the lower extreme of organism is provided with four even distribution's gyro wheel, the left -hand end fixedly connected with handle of organism, the upper end of organism is provided with knife grinding roller, the upper end fixedly connected with the protective cover of organism, the upper end of organism and located the front side fixedly connected with the fixed frame of protective cover, the inboard left side wall fixed mounting of fixed frame has the motor. The utility model discloses through the action of servo motor, positive and negative screw thread screw rod etc. structure, can drive two clamping plates and move to each other, and the tool is clamped and fixed and is used, under the action of card hole, ball, spring etc. structure, can carry out rotary limit to rotary disc, and then carry out rotary limit to positive and negative screw thread screw rod, and then carry out moving positioning use to clamping plate.

Description

Technical Field

[0001] This utility model relates to the field of tool fixing technology, and in particular to a tool fixing device for an automatic tool sharpening machine. Background Technology

[0002] In automatic knife sharpening machines, the tool fixing device is a key subsystem for achieving high-precision sharpening. Its design must balance rigid positioning with the need for rapid tool changing. A combination of fixed and movable clamping plates is used, with the clamping distance adjusted by bolts. The movable clamping plate is equipped with a pre-clamping unit and a self-locking drive module to prevent tool slippage.

[0003] The utility model patent with patent authorization announcement number CN208409391U discloses a knife sharpening machine, including a frame and a grinding assembly fixedly installed on the frame for sharpening knives. The frame includes a base and a mounting plate fixedly connected to the base. The mounting plate is provided with a mounting through hole. The grinding assembly includes a motor fixed to one side of the mounting plate and a grinding wheel located on the side of the mounting plate opposite to the motor and driven to rotate by the motor. The knife sharpening machine also includes a radial bearing with an inner ring fixed to the motor shaft and an outer ring abutting against the inner wall of the mounting through hole.

[0004] However, existing automatic knife sharpening machines also have certain shortcomings in their tool fixing devices. Although existing automatic knife sharpening machines use a combination of motors, screws, and other structures to clamp and fix the fixture, the movement accuracy of the clamping plate is easily affected by factors such as centrifugal force. Therefore, improvements are needed. Utility Model Content

[0005] This utility model provides a tool fixing device for an automatic knife sharpening machine, which solves the problem that although the existing tool fixing devices of automatic knife sharpening machines use a combination of motors, screws and other structures to clamp and fix the fixture, the movement accuracy of the clamping plate is poor due to the influence of factors such as centrifugal force.

[0006] To solve the above-mentioned technical problems, this utility model provides a tool fixing device for an automatic knife sharpening machine, including a machine body. Four evenly distributed rollers are provided at the lower end of the machine body. A handle is fixedly connected to the left end of the machine body. A sharpening roller is provided at the upper end of the machine body. A protective cover is fixedly connected to the upper end of the machine body and to the front of the protective cover. A motor is fixedly installed on the inner left side wall of the fixed frame. The output shaft of the motor is rotatably connected to the left vertical part of the fixed frame. A small gear is fixedly sleeved on the outer side of the output shaft of the motor. A positive and negative threaded screw is installed on the inner wall of the fixed frame through bearings. Two evenly distributed clamping plates are threadedly connected to the outer side of the positive and negative threaded screw. A guide plate is fixedly connected to the inner wall of the fixed frame. A moving plate is slidably sleeved on the outer side of the guide plate. The moving plate is slidably connected to the machine body. The moving plate is fixedly connected to the clamping plates. A positioning mechanism is provided on both the positive and negative threaded screw and the fixed frame. An oil injection mechanism is provided on the horizontal part of the fixed frame.

[0007] Preferably, a large gear is fixedly sleeved on the outer side of the positive and negative threaded screw. The large gear meshes with the small gear. Through the meshing relationship, when the small gear rotates, it can drive the large gear to rotate, thereby causing the positive and negative threaded screw to rotate.

[0008] Preferably, the positioning mechanism includes a rotating disk, the right end of the positive and negative threaded screw is fixedly connected to the rotating disk, the left end of the rotating disk has a locking hole, the right vertical part of the fixing frame is slidably connected to a telescopic plate, the right end of the telescopic plate is fixedly connected to a locking ball, the locking ball is slidably connected to the locking hole, and the left end of the telescopic plate is fixedly connected to an end plate. Through the action of the locking hole, locking ball and other structures, the rotation of the rotating disk can be limited to ensure the rotational stability of the positive and negative threaded screw.

[0009] Preferably, multiple locking holes are provided, and the multiple locking holes are arranged in a circular array on the rotating disk. The locking holes can be used in conjunction with locking balls for locking and engaging.

[0010] Preferably, a spring is welded to the right end of the end plate, and the other end of the spring is welded to the right side wall of the inner wall of the fixing frame. The end plate can be connected and used by means of the spring.

[0011] Preferably, the oil injection mechanism includes an oil reservoir. The oil reservoir is fixedly connected to the horizontal part of the fixed frame. A telescopic rod is slidably connected to the inner wall of the oil reservoir. A guide rod is fixedly sleeved on the outer side of the telescopic rod. The guide rod is slidably connected to the oil reservoir. A plug is fixedly connected to the lower end of the telescopic rod. The plug is slidably connected to the inner wall of the oil reservoir. A second spring is fixedly connected to the lower side of the guide rod. The other end of the second spring is fixedly connected to the bottom inner side of the oil reservoir. Through the setting of the telescopic rod and the guide rod, the plug can be driven to a stable moving state, thereby allowing the plug to detach from the oil reservoir and allowing the lubricating oil to circulate and be used.

[0012] Preferably, an end piece is fixedly connected to the upper end of the telescopic rod, and the end piece contacts the oil reservoir. By setting the end piece, the telescopic rod can be pulled to move and be used.

[0013] Compared with related technologies, the tool fixing device for an automatic sharpening machine provided by this utility model has the following beneficial effects:

[0014] This utility model provides a tool fixing device for an automatic tool sharpening machine. Through the action of a servo motor, a positive and negative threaded screw, and other structures, two clamping plates can be driven to move in opposite directions to clamp and fix the tool. Under the action of a locking hole, a locking ball, a spring, and other structures, the rotation of the rotating disk can be limited, thereby limiting the rotation of the positive and negative threaded screw, and then moving and positioning the clamping plates.

[0015] This utility model provides a tool fixing device for an automatic tool sharpening machine. By pulling the end plate upward, the telescopic rod is moved, which in turn moves the guide rod stably, causing the spring to deform. Finally, the plug is submerged in the oil reservoir, allowing lubricating oil to circulate and lubricate the large and small gears to ensure good transmission performance. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A bottom view;

[0018] Figure 3 This utility model Figure 1 A front sectional view;

[0019] Figure 4 This utility model Figure 2 Enlarged view of the positioning mechanism;

[0020] Figure 5 This utility model Figure 3 Enlarged view of the oil injection mechanism.

[0021] In the diagram: 1. Machine body; 2. Roller; 3. Handle; 4. Grinding roller; 5. Protective cover; 6. Fixing frame; 7. Motor; 70. Pinion; 8. Lead screw with positive and negative threads; 80. Large gear; 9. Clamping plate; 10. Guide plate; 11. Moving plate; 12. Positioning mechanism; 13. Oil injection mechanism; 121. Rotating disk; 122. Locking hole; 123. Telescopic plate; 124. Locking ball; 125. End plate; 126. Spring 1; 131. Oil reservoir; 132. Telescopic rod; 133. Guide rod; 134. Plug; 135. Spring 2; 136. End plate. Detailed Implementation

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A tool fixing device for an automatic knife sharpening machine includes a body 1. Four evenly distributed rollers 2 are arranged at the lower end of the body 1. A handle 3 is fixedly connected to the left end of the body 1. A sharpening roller 4 is arranged at the upper end of the body 1. A protective cover 5 is fixedly connected to the upper end of the body 1. A fixing frame 6 is fixedly connected to the upper end of the body 1, in front of the protective cover 5. A motor 7 is fixedly installed on the inner left side wall of the fixing frame 6. The output shaft of the motor 7 is rotatably connected to the left vertical part of the fixing frame 6. A small gear 70 is fixedly sleeved on the outer side of the output shaft of the motor 7. The inner wall of the fixing frame 6 is connected by bearings. A screw 8 with positive and negative threads is installed. A large gear 80 is fixedly sleeved on the outer side of the screw 8. The large gear 80 meshes with a small gear 70. Through the meshing relationship, when the small gear 70 rotates, it can drive the large gear 80 to rotate, so that the screw 8 with positive and negative threads rotates. Two evenly distributed clamping plates 9 are connected to the outer side of the screw 8 with threads. A guide plate 10 is fixedly connected to the inner side wall of the fixed frame 6. A movable plate 11 is slidably sleeved on the outer side of the guide plate 10. The movable plate 11 is slidably connected to the machine body 1 and fixedly connected to the clamping plates 9.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 A positioning mechanism 12 is provided on both the screw rod 8 and the fixed frame 6. The positioning mechanism 12 includes a rotating disk 121. The right end of the screw rod 8 is fixedly connected to the rotating disk 121. The left end of the rotating disk 121 has a locking hole 122. The right vertical part of the fixed frame 6 is slidably connected to a telescopic piece 123. The right end of the telescopic piece 123 is fixedly connected to a locking ball 124. The locking ball 124 is slidably connected to the locking hole 122. The left end of the telescopic piece 123 is fixedly connected to an end plate 125. Through the action of the locking hole 122, the locking ball 124 and other structures, the rotating disk 121 can be rotated and limited to ensure the rotational stability of the screw rod 8.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Multiple locking holes 122 are provided, and the multiple locking holes 122 are arranged in a ring array on the rotating disk 121. Through the setting of the locking holes 122, they can be used to engage with the locking ball 124. A spring 126 is welded to the right end of the end plate 125. The other end of the spring 126 is welded to the inner right side wall of the fixing frame 6. Through the setting of the spring 126, the end plate 125 can be connected.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 The horizontal part of the fixing frame 6 is provided with an oil injection mechanism 13, which includes an oil reservoir 131. The oil reservoir 131 is fixedly connected to the horizontal part of the fixing frame 6. A telescopic rod 132 is slidably connected to the inner wall of the oil reservoir 131. A guide rod 133 is fixedly sleeved on the outer side of the telescopic rod 132. The guide rod 133 is slidably connected to the oil reservoir 131. A plug 134 is fixedly connected to the lower end of the telescopic rod 132. The plug 134 is slidably connected to the inner wall of the oil reservoir 131. The lower side of the guide rod 133 is fixed. A second spring 135 is connected, and the other end of the second spring 135 is fixedly connected to the bottom inner side of the oil reservoir 131. An end piece 136 is fixedly connected to the upper end of the telescopic rod 132. The end piece 136 contacts the oil reservoir 131. By setting the end piece 136, the telescopic rod 132 can be pulled to move. By setting the telescopic rod 132 and the guide rod 133, the plug 134 can be driven to a stable moving state, thereby causing the plug 134 to detach from the oil reservoir 131 and allowing the lubricating oil to circulate.

[0026] Working principle: During use, the output shaft is driven by the motor 7 to rotate, which in turn drives the pinion 70 to rotate. In the meshing relationship, the rotation of the pinion 70 drives the large gear 80 to rotate, which in turn drives the positive and negative threaded screw 8 to rotate. In the threaded connection relationship, the two clamping plates 9 can be driven to move towards each other, and the moving plate 11 can be driven to slide along the surface of the guide plate 10 to ensure the stable movement of the clamping plates 9. Finally, the two clamping plates 9 move stably to quickly clamp and fix the tool.

[0027] When the screw 8 rotates, it drives the rotating disk 121 to rotate. Under the pressure of the inner wall of the locking hole 122, the telescopic piece 123 can be pushed to slide along the inner wall of the fixed frame 6, and the end plate 125 can be moved, causing the spring 126 to deform. Finally, the locking ball 124 is disengaged from the locking hole 122. Under the action of force, the locking ball 124 slides along the surface of the rotating disk 121. When the locking ball 124 slides into the next locking hole 122, the spring 126 returns to its original deformation, so as to pull the locking ball 124 into the locking hole 122, limit the rotating disk 121, and then limit the screw 8. Finally, the clamping plate 9 is moved and positioned for use.

[0028] By pulling the end piece 136 upward, the telescopic rod 132 slides along the inner wall of the oil reservoir 131, causing the guide rod 133 to slide along the inner wall of the oil reservoir 131. This ensures the stable movement of the telescopic rod 132 and causes the spring 135 to deform. Ultimately, the plug 134 is completely submerged in the oil reservoir 131, allowing the lubricating oil to circulate and come into contact with the large gear 80 and the small gear 70, thus lubricating the large gear 80 and the small gear 70 and reducing the hard wear problem between the large gear 80 and the small gear 70.

Claims

1. A tool fixing device for an automatic knife sharpening machine, comprising a body (1), characterized in that: The lower end of the machine body (1) is provided with four evenly distributed rollers (2), the left end of the machine body (1) is fixedly connected with a handle (3), the upper end of the machine body (1) is provided with a grinding roller (4), the upper end of the machine body (1) is fixedly connected with a protective cover (5), the upper end of the machine body (1) and the front side of the protective cover (5) are fixedly connected with a fixing frame (6), the inner left side wall of the fixing frame (6) is fixedly installed with a motor (7), the output shaft of the motor (7) is rotatably connected to the left vertical part of the fixing frame (6), and a small gear (70) is fixedly sleeved on the outside of the output shaft of the motor (7). The inner wall of the fixed frame (6) is fitted with a positive and negative threaded screw (8) via bearings. The outer side of the positive and negative threaded screw (8) is connected by two evenly distributed clamping plates (9) via threads. The inner side wall of the fixed frame (6) is fixedly connected with a guide plate (10). The outer side of the guide plate (10) is slidably sleeved with a moving plate (11). The moving plate (11) is slidably connected to the machine body (1). The moving plate (11) is fixedly connected to the clamping plates (9). The positive and negative threaded screw (8) and the fixed frame (6) are jointly provided with a positioning mechanism (12). The horizontal part of the fixed frame (6) is provided with an oil injection mechanism (13).

2. The tool fixing device for an automatic sharpening machine according to claim 1, characterized in that: A large gear (80) is fixedly sleeved on the outside of the positive and negative threaded screw (8), and the large gear (80) meshes with the small gear (70).

3. The tool fixing device for an automatic sharpening machine according to claim 1, characterized in that: The positioning mechanism (12) includes a rotating disk (121), the right end of the positive and negative threaded screw (8) is fixedly connected to the rotating disk (121), the left end of the rotating disk (121) is provided with a locking hole (122), the right vertical part of the fixing frame (6) is slidably connected to a telescopic piece (123), the right end of the telescopic piece (123) is fixedly connected to a locking ball (124), the locking ball (124) is slidably connected to the locking hole (122), and the left end of the telescopic piece (123) is fixedly connected to an end plate (125).

4. The tool fixing device for an automatic sharpening machine according to claim 3, characterized in that: Multiple card holes (122) are provided, and the multiple card holes (122) are arranged in a ring array on the rotating disk (121).

5. The tool fixing device for an automatic sharpening machine according to claim 3, characterized in that: A spring (126) is welded to the right end of the end plate (125), and the other end of the spring (126) is welded to the right side wall of the inner wall of the fixing frame (6).

6. The tool fixing device for an automatic sharpening machine according to claim 1, characterized in that: The oil injection mechanism (13) includes an oil reservoir (131). The oil reservoir (131) is fixedly connected to the horizontal part of the fixing frame (6). A telescopic rod (132) is slidably connected to the inner wall of the oil reservoir (131). A guide rod (133) is fixedly sleeved on the outer side of the telescopic rod (132). The guide rod (133) is slidably connected to the oil reservoir (131). A plug (134) is fixedly connected to the lower end of the telescopic rod (132). The plug (134) is slidably connected to the inner wall of the oil reservoir (131). A second spring (135) is fixedly connected to the lower side of the guide rod (133). The other end of the second spring (135) is fixedly connected to the bottom inner side of the oil reservoir (131).

7. The tool fixing device for an automatic tool sharpening machine according to claim 6, characterized in that: The upper end of the telescopic rod (132) is fixedly connected to an end piece (136), which is in contact with the oil reservoir (131).

Images