Motor carbon brush brush box tail forming device

Abstract

The utility model discloses a motor carbon brush brush box tail forming device, including base, the base middle part fixedly arranged with the tray for placing motor carbon brush, the tray fixedly arranged with the positioning block for preventing motor carbon brush rotation, the base fixedly arranged with the block and the block is distributed to the tray outer periphery, the spring placing groove for placing spring is seted up in the block top, the spring baffle forming unit is evenly arranged with the spring baffle forming unit of base four corners, spring baffle forming unit and base sliding connection and the sliding direction is opposite the block, spring baffle forming unit is provided with the top rod for top pressure spring, spring baffle forming unit is provided with the clamp for top pressure spring baffle bending forming. The utility model is suitable for the novel brush box of improved, simple structure, clever design has realized the quick bending forming of novel brush box's spring baffle.

Description

Technical Field

[0001] This utility model relates to the field of motor carbon brush technology, and in particular to a motor carbon brush box tail forming device. Background Technology

[0002] Motor carbon brushes are an important component of brushed motors, used on the commutator or slip rings as sliding contacts for conducting current. Motor carbon brushes are mounted on a brush plate, typically consisting of a brush holder, springs, and carbon brushes. The springs and carbon brushes are installed inside the brush holder. The carbon brushes utilize the spring action to press against the motor rotor or slip rings, maintaining good contact between the carbon brushes and the rotor or slip rings. This allows the carbon brushes to effectively conduct current, ensuring normal motor operation. Simultaneously, the spring tension allows the carbon brushes to automatically adjust their position after wear, maintaining contact pressure with the rotor or slip rings and extending the lifespan of the carbon brushes. In existing technology, two spring baffles are provided at the end of the upper surface of the brush holder. Before carbon brush assembly, the spring baffles are flush with the upper surface of the brush holder. During carbon brush assembly, a special bending tool is used to bend the spring baffles downwards, blocking the opening at the end of the brush holder to position one end of the spring, as shown in the attached drawings of Chinese Patent No. CN 221407925 U. However, this structure has the following drawbacks: 1. When the spring baffle bends downwards, the intersection of the side wall of the brush box and the bending area is prone to deformation, which often causes the spring to jam, preventing the spring from working properly and thus affecting the normal operation of the carbon brush.

[0003] 2. Before the spring baffle is bent, its shape is relatively complex, which is not conducive to rapid processing and forming.

[0004] To address the aforementioned shortcomings, the brush box structure was optimized, resulting in a novel brush box design. This design involves creating a slot on the side wall of the brush box body near the end, forming four spring baffles at the end. These spring baffles are then bent to form a slanted cross shape to hold the springs in place. The structure is simple and easy to manufacture quickly. Details of this novel brush box structure are provided in the appendix. Figure 9 However, the existing spring baffle bending tool is no longer suitable for this new brush box. Therefore, it is necessary to redesign a tail forming device suitable for this new brush box to achieve rapid bending and forming of the spring baffle of the new brush box. Utility Model Content

[0005] The purpose of this utility model is to provide a forming device for the tail of a motor carbon brush box, which enables rapid bending and forming of the spring baffle of the optimized new brush box.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A motor carbon brush holder tail forming device includes a base, a tray for placing motor carbon brushes is fixedly disposed in the middle of the base, a positioning block for preventing the motor carbon brushes from rotating is fixedly disposed on the tray, a stop block is fixedly disposed on the base and the stop blocks are evenly distributed on the outer periphery of the tray, a spring placement groove for placing springs is opened on the top of the stop block, spring baffle forming units are evenly distributed at the four corners of the base, the spring baffle forming units are slidably connected to the base and the sliding direction is directly opposite to the stop block, the spring baffle forming unit is provided with a push rod for pressing the spring, and the spring baffle forming unit is provided with a clamp for pressing the spring baffle to bend and form.

[0007] Furthermore, a positioning plate is fixedly provided in the middle of the tray, and a square hole groove is opened in the middle of the positioning plate.

[0008] Furthermore, the positioning block includes a chuck, a square protrusion, and a handle. The square protrusion is located at the bottom of the chuck and is coaxially and fixedly connected to the chuck. The square protrusion can be matched and placed into a square hole groove. The handle is cylindrical and is located at the top of the chuck and is coaxially and fixedly connected to the chuck. The chuck has four slots evenly distributed, and an avoidance groove is formed between adjacent slots on the chuck.

[0009] Furthermore, the base has symmetrical grooves along its diagonal, and a slide is fixedly installed in the groove. The slide has a seat groove in the middle, and the upper surface of the slide has first screw holes on both sides of the seat groove. A guide rail is fixedly connected to the top of the slide through the first screw holes. A stop groove is provided at one end of the groove near the center of the base, and the stop is installed in the stop groove.

[0010] Furthermore, the spring baffle forming unit includes a first slider, a second slider, and a hinge plate. The first slider has a first groove symmetrically formed on its waist. The first slider is placed on the seat groove and is slidably connected to the slide block by fitting onto the guide rail through the first groove. The second slider has a second groove symmetrically formed on its waist. The second slider is placed on the seat groove and is slidably connected to the slide block by fitting onto the guide rail through the second groove. The second slider is located behind the first slider. A top rod is fixedly set at the upper center of the first slider. Calipers are symmetrically set on both sides above the first slider. The middle part of the calipers is hinged to the first slider. The two ends of the hinge plate are respectively hinged to the second slider and the tail of the calipers.

[0011] Furthermore, the upper surface of the first slider is provided with a straight groove, the straight groove is provided with a vertical mounting groove, the upper surface of the first slider is provided with a first hinge hole on both sides of the straight groove, the push rod is L-shaped, the long end of the push rod is placed in the straight groove and the short end is inserted into the mounting groove in a matching manner, the caliper is hinged to the first slider through the middle of the caliper and the first hinge hole by a first hinge pin, and both ends of the hinge plate are hinged to the second slider and the tail of the caliper by second hinge pins respectively.

[0012] Furthermore, a bending die is fixedly provided at the long end of the push rod, and a bending punch is fixedly provided at the head of the caliper, with the bending die and the bending punch matching each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model is applicable to the improved new type of brush box. It has a simple structure and ingenious design. The spring baffle forming unit is equipped with a first slider, a second slider, a push rod, and a caliper. The push rod is fixed to the first slider and has a bending die at its head. The middle part of the caliper is hinged to the first slider, and the tail part of the caliper is hinged to the second slider through a hinge plate. The head of the caliper is equipped with a bending punch. During operation, the cylinder pushes the second slider and the first slider forward. When the first slider is obstructed and stops moving, the bending die pushes the spring into the new type of brush box and stops at the spring baffle of the new type of brush box. The second slider continues to move forward, and the hinge plate drives the bending punch of the caliper head to move closer to the bending punch, so that the spring baffle bends inward and forms an oblique cross shape to block the spring, realizing the rapid bending and forming of the spring baffle of the new type of brush box. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the base structure; Figure 3 This is a schematic diagram of the pallet structure; Figure 4 This is a schematic diagram of the positioning block structure; Figure 5 This is a schematic diagram of the spring baffle forming unit structure; Figure 6 This is a schematic diagram of the first slider structure; Figure 7 This is a schematic diagram of the push rod structure; Figure 8 This is a schematic diagram of the working state of this utility model; Figure 9 This is a schematic diagram of the structure of the new brush box before bending. Figure 10 This is a diagram showing the state of the tail section of the new brush box after it has been formed. In the diagram: 1-base, 101-groove, 102-slide block, 103-slot, 104-first screw hole, 105-stop slot, 2-tray, 201-positioning plate, 202-square hole slot, 3-positioning block, 301-chuck, 302-avoidance groove, 303-slot, 304-square protrusion, 305-handle, 4-stop block, 401-spring placement slot, 5-guide rail, 6-spring baffle forming unit, 601-first slider, 602- First slide groove, 603-first hinge hole, 604-straight groove, 605-mounting groove, 606-second slider, 607-second slide groove, 608-first hinge pin, 609-second hinge pin, 610-hinge plate, 612-caliper, 613-bending punch, 614-ejector rod, 615-bending die, 7-motor carbon brush, 701-carbon brush holder, 702-new type brush box, 703-spring baffle, 704-spring, 705-carbon brush. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0016] Please see Figures 1-9 One embodiment provided by this utility model: A motor carbon brush holder tail forming device includes a base 1. A tray 2 for placing motor carbon brushes 7 is fixedly installed in the middle of the base 1 by bolts. The tray 2 is fixedly provided with a positioning block 3 for preventing the motor carbon brushes 7 from rotating. Four stops 4 are fixedly provided on the base 1 and are evenly distributed on the outer periphery of the tray 2. The top of the stops 4 is provided with a spring placement groove 401 for placing springs 704. Spring baffle forming units 6 are evenly distributed at the four corners of the base 1. The spring baffle forming units 6 are slidably connected to the base 1 and the sliding direction is directly opposite to the stops 4. The spring baffle forming units 6 are provided with a push rod 614 for pressing the springs 704. The spring baffle forming units 6 are provided with a clamp 612 for pressing the spring baffles 703 and bending them. The spring baffle forming units 6 are connected to a cylinder.

[0017] The tray 2 has a fixed positioning plate 201 in the middle, and a square hole groove 202 is opened in the middle of the positioning plate 201. The positioning plate 201 and the square hole groove 202 are both machined. The positioning plate 201 is used to position the motor carbon brush 7 and prevent the motor carbon brush 7 from moving radially.

[0018] The positioning block 3 includes a chuck 301, a square protrusion 304, and a handle 305. The square protrusion 304 is located at the bottom of the chuck 301 and is coaxially fixedly connected to the chuck 301. The square protrusion 304 can be matched and placed into the square hole slot 202 to prevent the positioning block 3 from rotating. The handle 305 is cylindrical and is located at the top of the chuck 301 and is coaxially fixedly connected to the chuck 301. The chuck 301, the square protrusion 304, and the handle 305 are all formed by machining. The chuck 301 is evenly provided with four slots 303. The slots 303 are used to hold the new brush box 702 on the motor carbon brush 7 to prevent the motor carbon brush 7 from rotating. There are avoidance grooves 302 on the chuck 301 between adjacent slots 303 to avoid the specific structure of the carbon brush holder 701 and prevent interference.

[0019] The base 1 has symmetrical grooves 101 along its diagonal. A slide 102 is machined in the groove 101. A seat groove 103 is formed in the middle of the slide 102. The upper surface of the slide 102 has first screw holes 104 on both sides of the seat groove 103. A guide rail 5 is fixedly connected to the top of the slide 102 through the first screw holes 104 using countersunk bolts. A stop groove 105 is formed at one end of the groove 101 near the center of the base 1. A stop block 4 is installed in the stop groove 105 by screws.

[0020] The spring baffle forming unit 6 includes a first slider 601, a second slider 606, and a hinge plate 610. The first slider 601 has a first groove 602 symmetrically opened on its waist. The first slider 601 is placed on the seat groove 103 and is slidably connected to the slide seat 102 by using the first groove 602 to fit onto the guide rail 5. The second slider 606 has a second groove 607 symmetrically opened on its waist. The second slider 606 is placed on the seat groove 103 and is slidably connected to the slide seat 102 by using the second groove 607 to fit onto the guide rail 5. The second slider 606 is located behind the first slider 601. A top rod 614 is fixedly installed in the middle of the upper part of the first slider 601. A caliper 612 is symmetrically arranged on both sides of the upper part of the first slider 601. The middle part of the caliper 612 is hinged to the first slider 601. The two ends of the hinge plate 610 are respectively hinged to the second slider 606 and the tail of the caliper 612. The second slider 606 is connected to the cylinder piston rod.

[0021] The first slider 601 has a straight groove 604 on its upper surface, and a vertical mounting groove 605 is formed in the straight groove 604. The first slider 601 has first hinge holes 603 on both sides of the straight groove 604 on its upper surface. The push rod 614 is L-shaped, with its long end placed in the straight groove 604 and its short end inserted into the mounting groove 605. The caliper 612 is hinged to the first slider 601 through the middle of the caliper 612 and the first hinge hole 603 via a first hinge pin 608. The two ends of the hinge plate 610 are hinged to the second slider 606 and the tail of the caliper 612 via second hinge pins 609, respectively.

[0022] The long end of the push rod 614 is fixedly provided with a bending die 615, and the head of the caliper 612 is fixedly provided with a bending punch 613. The bending die 615 and the bending punch 613 are matched.

[0023] The working principle of this utility model is as follows: After the new brush box 702 is riveted to the carbon brush holder 701, the carbon brush holder 701 is placed on the tray 2 with its central hole fitted into the positioning plate 201 to prevent the carbon brush holder 701 from moving radially. Holding the handle 305 of the positioning block 3, the square protrusion 304 is inserted into the square hole groove 202 of the tray 2, simultaneously causing the slot 303 to lock the new brush box 702, preventing the carbon brush holder 701 from rotating, thus fixing the carbon brush holder 701 onto the tray 2. The carbon brush 705 is then placed into the new brush box 702 from its tail end. Four springs 704 are placed in the spring placement slots 401 respectively. The cylinder is then activated, and the cylinder... The second slider 606 is pushed to move towards the center of the base 1. As the second slider 606 moves, it pushes the first slider 601, caliper 612, and push rod 614 to move simultaneously via the hinge plate 610. The push rod 614 pushes the spring 704 into the new brush box 702. When the first slider 601 contacts the stop block 4 and stops moving, the push rod 614 has completely pushed the spring 704 into the new brush box 702 and compressed it. The bending die 615 at the top of the push rod 614 is located at the spring stop plate 703. The second slider 606 continues to move forward, causing the hinge plate 610 to open outwards around the second hinge pin 609 on the second slider 606. Figure 8 As shown, when the hinge plate 610 opens, it pushes the tail of the caliper 612 outward, and causes the bending punch 613 located at the head of the caliper 612 to move inward around the first hinge pin 608 and press against the spring baffle 703, causing it to bend inward. Under the action of the bending punch 613 and the bending die 615, the spring baffle 703 finally forms as shown. Figure 10 The oblique cross shape shown in the figure blocks the spring 704 to prevent the spring 704 from popping out. After the spring baffle 703 is bent and formed, the cylinder pulls the second slider 606 and the first slider 601 to move backward to return to the initial working state so as to perform the bending of the next new type of brush box.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for forming the tail end of a motor carbon brush box, characterized in that: The system includes a base (1), a tray (2) for placing motor carbon brushes (7) is fixedly provided in the middle of the base (1), a positioning block (3) for preventing the motor carbon brushes (7) from rotating is fixedly provided in the tray (2), a stop block (4) is fixedly provided in the base (1) and the stop blocks (4) are evenly distributed on the outer periphery of the tray (2), a spring placement groove (401) for placing springs (704) is opened on the top of the stop block (4), spring baffle forming units (6) are evenly distributed at the four corners of the base (1), the spring baffle forming units (6) are slidably connected to the base (1) and the sliding direction is directly opposite to the stop block (4), the spring baffle forming units (6) are provided with a push rod (614) for pressing the spring (704), and the spring baffle forming units (6) are provided with a clamp (612) for pressing the spring baffle (703) and bending it.

2. The motor carbon brush box tail forming device according to claim 1, characterized in that: A positioning plate (201) is fixedly installed in the middle of the tray (2), and a square hole groove (202) is opened in the middle of the positioning plate (201).

3. The motor carbon brush box tail forming device according to claim 2, characterized in that: The positioning block (3) includes a chuck (301), a square protrusion (304), and a handle (305). The square protrusion (304) is located at the bottom of the chuck (301) and is coaxially fixedly connected to the chuck (301). The square protrusion (304) can be matched and placed into the square hole groove (202). The handle (305) is cylindrical. The handle (305) is located at the top of the chuck (301) and is coaxially fixedly connected to the chuck (301). The chuck (301) is evenly provided with four slots (303). An avoidance groove (302) is provided between adjacent slots (303) on the chuck (301).

4. The motor carbon brush box tail forming device according to claim 1, characterized in that: The base (1) has symmetrical grooves (101) along its diagonal. A slide (102) is fixedly installed in the groove (101). A seat groove (103) is opened in the middle of the slide (102). A first screw hole (104) is opened on both sides of the seat groove (103) on the upper surface of the slide (102). A guide rail (5) is fixedly connected above the slide (102) through the first screw hole (104). A stop block groove (105) is opened at one end of the groove (101) near the center of the base (1). The stop block (4) is installed in the stop block groove (105).

5. The motor carbon brush box tail forming device according to claim 4, characterized in that: The spring baffle forming unit (6) includes a first slider (601), a second slider (606), and a hinge plate (610). The first slider (601) has a first groove (602) symmetrically formed on its waist. The first slider (601) is placed on the seat groove (103) and is slidably connected to the slide block (102) by means of the first groove (602) sleeved on the guide rail (5). The second slider (606) has a second groove (607) symmetrically formed on its waist. The second slider (606) is placed on the seat groove (103). The second slide (607) is fitted onto the guide rail (5) and slidably connected to the slide block (102). The second slide block (606) is located behind the first slide block (601). A top rod (614) is fixedly installed in the middle of the upper part of the first slide block (601). Calipers (612) are symmetrically arranged on both sides of the upper part of the first slide block (601). The middle part of the caliper (612) is hinged to the first slide block (601). The two ends of the hinge plate (610) are respectively hinged to the second slide block (606) and the tail of the caliper (612).

6. The motor carbon brush box tail forming device according to claim 5, characterized in that: The upper surface of the first slider (601) is provided with a straight groove (604), the straight groove (604) is provided with a vertical mounting groove (605), the upper surface of the first slider (601) is provided with a first hinge hole (603) on both sides of the straight groove (604), the top rod (614) is L-shaped, the long end of the top rod (614) is placed in the straight groove (604) and the short end is inserted into the mounting groove (605) in a matching manner, the caliper (612) is hinged to the first slider (601) through the middle of the caliper (612) and the first hinge hole (603) via the first hinge pin (608), and the two ends of the hinge plate (610) are hinged to the second slider (606) and the tail of the caliper (612) respectively via the second hinge pin (609).

7. The motor carbon brush box tail forming device according to claim 6, characterized in that: The long end of the push rod (614) is fixedly provided with a bending die (615), and the head of the caliper (612) is fixedly provided with a bending punch (613). The bending die (615) and the bending punch (613) are matched.

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