Automatic screw locking machine of angle grinder

Abstract

The utility model relates to the technical field of mechanical automation, in particular to an automatic screw locking machine of an angle grinder, which comprises a fixing plate, a fixing table and a sliding table, the sliding table moves on the fixing plate along an x axis, the fixing table is concave, a fixing part is arranged on the fixing table, a head shell is sleeved on the fixing table, a bevel gear and a nut are arranged in the head shell, and a placing table is arranged in a notch of the fixing table. The left side of the limiting plate abuts against a rotor consistent with the axis of the bevel gear, the axis of the nut and the axis of the head shell, a driven mechanism on the sliding table rolls on the lower half portion of the outer side of the rotor, a synchronous belt rolls on the upper half portion of the outer side of the rotor, and the synchronous belt is connected with a driving mechanism capable of driving the synchronous belt to be away from or close to the rotor. According to the utility model, through the arrangement of the fixing part and the limiting groove, the head shell can be stably sleeved on the head shell, the fixation of the bevel gear and the nut is ensured, the insertion stability of the rotor is enhanced, and through the arrangement of the synchronous belt, torque is provided for the rotor, so that the screw joint of the rotor and the nut is realized, and the assembly efficiency of the head shell and the rotor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical automation, in particular to an automatic screw locking machine for an angle grinder. Background Art

[0002] Angle grinder is a handheld power tool mainly used for grinding, polishing and cutting various materials. It uses a high-speed rotating grinding wheel or wire brush to achieve these operations. It is widely used, light and flexible, so it is popular in fields such as construction and decoration.

[0003] Currently, angle grinders need to assemble multiple parts before leaving the factory, including the assembly of the rotor and the head shell. The head shell is equipped with a bevel gear inside, which needs to be fixed to the rotor shaft with a nut. However, due to the narrow space inside the head shell, it is difficult to manually use a wrench to reach in and fix the nut, resulting in low installation efficiency and possible damage to the nut or rotor. In order to optimize assembly efficiency and improve product quality, it is particularly important to seek new installation methods. Utility Model Content

[0004] The utility model aims to provide an automatic screw locking machine for an angle grinder, wherein a slide arranged on a fixed plate can carry a rotor and insert it into a head shell, and a synchronous belt can provide a stable torque to the rotor to realize installation between the head shell and the rotor.

[0005] The above-mentioned utility model object of the utility model is achieved through the following technical scheme: an automatic screw locking machine for an angle grinder, comprising a fixing plate, a fixing table fixedly arranged on the fixing plate, and a slide table located on one side of the fixing table and moving back and forth along the x-axis on the fixing plate, the fixing table being in a concave shape, a fixing portion in a superior arc shape convexly formed on the top surface of the fixing table, a head shell being movably sleeved on the fixing portion, a bevel gear and a nut being arranged in the head shell, a placing table fixedly connected to the fixing portion being arranged in the recess of the fixing table, a limiting groove for placing the bevel gear and the nut being arranged on the top surface of the placing table, a fixable limiting plate being slidingly arranged on the right side of the slide table, a rotor being consistent with the axial line of the bevel gear, the nut and the head shell being abutted on the left side of the limiting plate, a side surface of the rotor and its lower half being rollingly matched with a driven mechanism fixedly arranged on the slide table, and an upper half being rollingly matched with a synchronous belt, and the synchronous belt transmission being connected with a driving mechanism capable of taking it away from or approaching the rotor.

[0006] Preferably, two symmetrical linear guide rails are fixed on the fixed plate, the slide is fixed on the slider of the linear guide rails, and a first handle is fixed on the front side of the slide, and two symmetrical sliding rods are fixed on the right side of the slide, and one end of the two sliding rods away from the slide movably passes through the limit plate and slides with it, and a fixing screw is screwed on the limit plate for abutting the outside of the sliding rod.

[0007] Preferably, the driven mechanism includes a base plate fixed on the slide, and an M-shaped fixed seat is symmetrically provided on the top surface of the base plate. Two oppositely arranged rotating shafts are rotatably engaged between the two fixed seats, and four bearings are fixedly mounted on the rotating shafts. A separating sleeve mounted on the rotating shaft is provided between each adjacent bearing, and the rotor is rollingly engaged between the bearings on the two rotating shafts.

[0008] Preferably, the driving mechanism includes a brushless motor arranged above and behind the rotor, the brushless motor is located on one side of the output shaft and is fixedly connected to a guide shaft support, and the output shaft of the brushless motor passes through the guide shaft support and is fixedly connected to a synchronous wheel a, the outer side of the guide shaft support is rotatably engaged with a rotating arm, and the end of the rotating arm away from the guide shaft support is rotatably engaged with a synchronous wheel b, and the synchronous wheel a is transmission-connected to the synchronous wheel b through the synchronous belt.

[0009] Preferably, the outer movable sleeve of the brushless motor is provided with a support seat fixedly connected to the guide shaft support, the bottom of the support seat is fixedly connected to a base plate fixed to the bottom surface of the fixed plate, and the top of the support seat is arc-shaped, and two limit blocks are welded on the arc-shaped edge of the support seat at intervals, and the two limit blocks are respectively at nine o'clock and one o'clock directions relative to the center axis of the support seat, and a baffle rod fixed on the rotating arm is movably abutted between the two limit blocks.

[0010] Preferably, the rotating arm is key-shaped, and a second handle is fixedly provided on the front side of the rotating arm, and a protective cover half-enclosing the synchronous wheel a, the synchronous wheel b and the synchronous belt is fixedly connected to the side of the rotating arm away from the blocking rod.

[0011] Preferably, handles are fixedly provided on both sides of the top surface of the fixing plate, and a heightening platform is fixedly provided on the top surface of the fixing plate, and the fixing platform is fixedly connected to the fixing plate via the heightening platform.

[0012] Compared with the prior art, the utility model provides an automatic screw locking machine for an angle grinder, which has the following beneficial effects:

[0013] The utility model can make the head shell be firmly mounted thereon by providing a fixing platform and a fixing part in an excellent arc shape, and can ensure the fixation of the bevel gear and the nut by providing a placing platform and a limiting groove, thereby enhancing the stability of rotor insertion, and can provide a stable torque for the rotor by providing a synchronous belt to realize the screw connection between the rotor and the nut, thereby significantly improving the assembly efficiency between the head shell and the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first isometric view of the utility model as a whole;

[0015] Figure 2It is a structural schematic diagram of the fixing platform, the fixing part, the head shell, the bevel gear, the nut, the placement platform and the limiting groove in the utility model;

[0016] Figure 3 It is an exploded schematic diagram of the driven mechanism of the utility model;

[0017] Figure 4 It is an exploded schematic diagram of the driving mechanism of the utility model;

[0018] Figure 5 It is a second isometric view of the utility model as a whole.

[0019] In the figure: 1, fixed plate; 2, fixed platform; 3, slide; 4, fixed part; 5, head shell; 6, bevel gear; 7, nut; 8, placement platform; 9, limit groove; 10, limit plate; 11, rotor; 12, driven mechanism; 1201, base plate; 1202, fixed seat; 1203, rotating shaft; 1204, bearing; 1205, separation sleeve; 13, driving mechanism; 1301, brushless motor; 1302, guide shaft support; 1303, synchronous wheel a; 1304, rotating arm; 1305, synchronous wheel b; 1306, synchronous belt; 1307, support seat; 1308, limit block; 1309, stop rod; 1310, second handle; 1311, shield; 14, bottom plate; 15, linear guide; 16, first handle; 17, slide rod; 18, handle; 19, heightening platform. DETAILED DESCRIPTION

[0020] 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.

[0021] Example: See Figure 1 to Figure 2An automatic screw locking machine for an angle grinder, comprising a fixing plate 1, a fixing table 2 fixed on the fixing plate 1, and a slide 3 located on one side of the fixing table 2 and moving back and forth along the x-axis on the fixing plate 1, two symmetrical linear guide rails 15 are fixed on the fixing plate 1, the slide 3 is fixed on the slider of the linear guide rail 15, and a first handle 16 is fixed on the front side of the slide 3, the fixing table 2 is concave-shaped, and a fixing portion 4 in the shape of an arc is protruded on its top surface, and a movable portion 16 is provided on the fixing portion 4. A head shell 5 is provided in the sleeve, and a bevel gear 6 and a nut 7 are provided in the head shell 5. A placement platform 8 fixedly connected to the fixed platform 2 is installed in the recess of the fixed platform 2. A limiting groove 9 for placing the bevel gear 6 and the nut 7 is provided on the top surface of the placement platform 8. A fixed limiting plate 10 is slidably provided on the right side of the slide 3. A rotor 11 consistent with the axis of the bevel gear 6, the nut 7 and the head shell 5 is abutted on the left side of the limiting plate 10. Two symmetrical sliding rods 17 are fixed on the right side of the slide 3. The ends of the two slide bars 17 away from the slide table 3 are movable and penetrate the limit plate 10 and slide with it. The limit plate 10 is screwed with a fixing screw for abutting the outer side of the slide bar 17. When the placement table 8 is installed in the recess of the fixing table 2, the outer side surface of the placement table 8 is provided with an inferior arc shape matching the shape of the fixing part 4, thereby forming a circle with the fixing part 4. This design enables the head shell 5 to be relatively stably mounted on the fixing part 4. At the same time, the limiting groove 9 is used to limit the movement of the bevel gear 6 and the nut 7, which helps to manually slide the first handle 16 and insert the rotor 11 on the slide table 3 into the head shell 5 and the bevel gear 6. Through this process, the bevel gear 6 and the nut 7 are in a state to be screwed, and the limiting plate 10 is used to limit the tail end of the rotor 11 to ensure its stable support during the insertion process. In addition, the limiting plate 10 can also be slidably adjusted according to the different lengths of the rotor 11, and fixed by abutting the outer side of the slide bar 17 with a fixing screw.

[0022] See also Figure 3The side surface and the lower half of the rotor 11 are rollingly matched with a driven mechanism 12 fixed on the slide 3, and the upper half is rollingly matched with a synchronous belt 1306, which is transmission-connected with a driving mechanism 13 that can take it away from or close to the rotor 11. The driven mechanism 12 includes a base plate 1201 fixed on the slide 3, and the top surface of the base plate 1201 is symmetrically provided with an M-shaped fixed seat 1202, and two rotating shafts 1203 arranged oppositely are rotatably matched between the two fixed seats 1202, and four bearings 1204 are sleeved and fixed on the rotating shaft 1203, and each adjacent bearing 1204 is provided with a sleeved The separation sleeve 1205 on the rotating shaft 1203, the rotor 11 rollingly fits between the bearings 1204 on the two rotating shafts 1203, and the rotor 11 rollingly fits between the bearings 1204 on the two rotating shafts 1203. Compared with the driven roller, the bearing 1204 is smaller in size, which makes it easier to follow the rotation of the rotor 11 when rolling with the rotor 11. Such a design helps to reduce the moment of inertia, improve the response speed, and reduce energy consumption. In addition, the spacing between the bearings 1204 is set to ensure that the rotor 11 can run smoothly when rotating, reduce vibration and friction, and improve the stability and service life of the driven mechanism 12. Appropriate spacing between the bearings 1204 can also optimize the balance of the rotor 11, reduce noise during operation, and further improve the overall performance.

[0023] See also Figures 4 to 5The driving mechanism 13 includes a brushless motor 1301 arranged at the upper rear of the rotor 11, the brushless motor 1301 is fixedly connected to a guide shaft support 1302 on one side of the output shaft, and the output shaft of the brushless motor 1301 passes through the guide shaft support 1302 and is fixedly connected to a synchronous wheel a1303, the outer side of the guide shaft support 1302 is rotatably matched with a rotating arm 1304, and the end of the rotating arm 1304 away from the guide shaft support 1302 is rotatably matched with a synchronous wheel b1305, and the synchronous wheel a1303 is connected to the synchronous wheel b1305 through a synchronous belt 1306. The outer movable sleeve of the brushless motor 1301 is provided with a support seat 1307 fixedly connected to the guide shaft support 1302, and the bottom of the support seat 1307 is fixedly connected to a bottom plate 14 fixedly arranged on the bottom surface of the fixed plate 1, and the top of the support seat 1307 is arc-shaped, and two arc-shaped edges of the support seat 1307 are welded at intervals. The two limit blocks 1308 are respectively located at the nine o'clock and one o'clock directions relative to the central axis of the support seat 1307, and a stop rod 1309 fixedly arranged on the rotating arm 1304 is movably abutted between the two limit blocks 1308. The rotating arm 1304 is key-shaped, and a second handle 1310 is fixedly arranged on the front side of the rotating arm 1304. A protective cover 1311 semi-enclosed by the synchronous wheel a 1303, the synchronous wheel b 1305 and the synchronous belt 1306 is fixedly connected to the side of the rotating arm 1304 away from the stop rod 1309. In order to control the rotation angle of the rotating arm 1304 and avoid excessive rotation or accidental movement, two limit blocks 1308 are specially provided. The two limit blocks 1308 are located at the nine o'clock and one o'clock directions of the arc-shaped edge of the support seat 1307, and can abut the stop rod 1309, thereby limiting the rotation of the rotating arm 1304 within a certain angle range. Figure 4 As shown, the support seat 1307 is provided with an infrared switch on the side away from the rotating arm 1304, adjacent to the limit block 1308 at the nine o'clock direction. When the user holds the second handle 1310 and presses down the rotating arm 1304, the infrared switch can sense the existence of the barrier rod 1309 and trigger the start of the brushless motor 1301. The brushless motor 1301 then drives the synchronous belt 1306 to rotate, and the tension of the synchronous belt 1306 drives the rotor 11 to rotate. As the downward pressure increases, the tension of the synchronous belt 1306 gradually increases, thereby providing a larger torque for the rotor 11, so that it can better cooperate with the bearing 1204 on the driven mechanism 12 to rotate.

[0024] Handles 18 are fixedly provided on both sides of the top surface of the fixed plate 1, and a raising platform 19 is fixedly provided on the top surface of the fixed plate 1. The fixed platform 2 is fixedly connected to the fixed plate 1 through the raising platform 19. Usually, the bottom plate 14 is fixed on the work station, and the fixed plate 1 is fixed to the bottom plate 14 by bolts. By removing the bolts, the handles 18 on both sides can be held to carry the utility model to exchange the work stations for easy movement. The raising platform 19 is used to increase the height of the fixed platform 2 to ensure that the axis center lines of the head shell 5, the bevel gear 6 and the nut 7 are aligned with the rotor 11.

[0025] Working principle: First, place the nut 7 and the bevel gear 6 in the limit groove 9 in sequence from left to right to ensure their fixed position, then put the head shell 5 on the fixing part 4, and place the rotor 11 on the driven mechanism 12 so that its threaded head faces the head shell 5 and the tail end abuts the limit plate 10. Next, slide the first handle 16 to drive the rotor 11 on the slide 3 to move toward the position of the head shell 5. During this process, press the head shell 5 with your left hand to ensure that the head of the rotor 11 is accurately inserted into the head shell 5 until it abuts against the threaded mouth of the nut 7. Finally, press down the second handle 1310 with your right hand, and the brushless motor 1301 drives the synchronous belt 1306 to rotate, providing the required torque for the rotor 11. The rotor 11 is screwed to the nut 7 through rotation. At this time, the assembly operation between the head shell 5 and the rotor 11 can be completed.

[0026] 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.

[0027] 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. An automatic screw locking machine for an angle grinder, characterized in that: The invention comprises a fixing plate (1), a fixing platform (2) fixed on the fixing plate (1), and a sliding platform (3) located on one side of the fixing platform (2) and moving back and forth along the x-axis on the fixing plate (1); the fixing platform (2) is in a concave shape, and a fixing portion (4) in an arc shape is protruded from its top surface; a head shell (5) is movably sleeved on the fixing portion (4); a bevel gear (6) and a nut (7) are arranged in the head shell (5); a placement platform (8) fixedly connected to the fixing platform (2) is arranged in the concave portion of the fixing platform (2); a slot for placing the bevel gear (6) and the nut (7) is provided on the top surface of the placement platform (8); The limit groove (9) of the nut (7) is provided on the right side of the slide (3), and a fixed limit plate (10) is slidably provided. The left side of the limit plate (10) is in contact with a rotor (11) which is consistent with the axis of the bevel gear (6), the nut (7) and the head shell (5). The side surface of the rotor (11) and its lower half are rollingly matched with a driven mechanism (12) fixed on the slide (3), and the upper half is rollingly matched with a synchronous belt (1306). The synchronous belt (1306) is transmission-connected with a driving mechanism (13) which can take it away from or close to the rotor (11).

2. The automatic screw locking machine for an angle grinder according to claim 1, characterized in that: Two symmetrical linear guide rails (15) are fixedly arranged on the fixed plate (1), the slide (3) is fixedly arranged on the slider of the linear guide rail (15), and a first handle (16) is fixedly arranged on the front side of the slide (3), and two symmetrical slide rods (17) are fixedly arranged on the right side of the slide (3), and the ends of the two slide rods (17) away from the slide (3) movably penetrate the limit plate (10) and slide with it, and the limit plate (10) is screwed with a fixing screw for abutting the outer side of the slide rod (17).

3. The automatic screw locking machine for an angle grinder according to claim 1, characterized in that: The driven mechanism (12) comprises a base plate (1201) fixed on the slide (3), the top surface of the base plate (1201) is symmetrically provided with an M-shaped fixed seat (1202), two fixed seats (1202) are rotatably engaged with two oppositely arranged rotating shafts (1203), four bearings (1204) are sleeved and fixed on the rotating shaft (1203), a separation sleeve (1205) sleeved on the rotating shaft (1203) is provided between each adjacent bearing (1204), and the rotor (11) is rollingly engaged between the bearings (1204) on the two rotating shafts (1203).

4. The automatic screw locking machine for an angle grinder according to claim 1, characterized in that: The driving mechanism (13) comprises a brushless motor (1301) disposed above and behind the rotor (11); the brushless motor (1301) is fixedly connected to a guide shaft support (1302) on one side of the output shaft, and the output shaft of the brushless motor (1301) passes through the guide shaft support (1302) and is fixedly connected to a synchronous wheel a (1303); a rotating arm (1304) is rotatably engaged with the outer side of the guide shaft support (1302); an end of the rotating arm (1304) away from the guide shaft support (1302) is rotatably engaged with a synchronous wheel b (1305); and the synchronous wheel a (1303) is transmission-connected to the synchronous wheel b (1305) via the synchronous belt (1306).

5. The automatic screw locking machine for an angle grinder according to claim 4, characterized in that: The outer movable sleeve of the brushless motor (1301) is provided with a support seat (1307) fixedly connected to the guide shaft support (1302); the bottom of the support seat (1307) is fixedly connected to a bottom plate (14) fixedly arranged on the bottom surface of the fixed plate (1); the top of the support seat (1307) is in an arc shape; two limit blocks (1308) are welded at intervals on the arc edge of the support seat (1307); the two limit blocks (1308) are respectively at the nine o'clock and one o'clock directions relative to the central axis of the support seat (1307); and a stop rod (1309) fixedly arranged on the rotating arm (1304) is movably abutted between the two limit blocks (1308).

6. The automatic screw locking machine for an angle grinder according to claim 5, characterized in that: The rotating arm (1304) is key-shaped, and a second handle (1310) is fixedly provided on the front side of the rotating arm (1304). A protective cover (1311) semi-enclosing the synchronous wheel a (1303), the synchronous wheel b (1305) and the synchronous belt (1306) is fixedly connected to the side of the rotating arm (1304) away from the blocking rod (1309).

7. The automatic screw locking machine for an angle grinder according to claim 1, characterized in that: Handles (18) are fixedly provided on both sides of the top surface of the fixing plate (1), and a heightening platform (19) is fixedly provided on the top surface of the fixing plate (1), and the fixing platform (2) is fixedly connected to the fixing plate (1) via the heightening platform (19).

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