Commutator pressing equipment

Abstract

The present application relates to the technical field of commutator production equipment and discloses a commutator pressing device, which includes a frame, an upper die, a middle die, a lower die, a pressing mechanism for pressing a bakelite powder cake in the upper die and a copper shell in the middle die, a first pushing mechanism for moving the upper die into or out of the pressing mechanism, a second pushing mechanism for moving the middle die into or out of the pressing mechanism, a bakelite powder feeding mechanism for loading bakelite powder cakes into the upper die, and a copper shell feeding mechanism for loading copper shells into the middle die. The bakelite powder feeding mechanism includes a material rack, a material channel disposed on the material rack, and a powder cake pushing assembly for pushing bakelite powder cakes out of the material channel one by one. The copper shell feeding mechanism includes a pre-installed plate for accommodating the copper shell, a pressing assembly for pressing the copper shell in the pre-installed plate into the middle die, and a copper shell pushing assembly for moving the pre-installed plate into or out of the pressing assembly. The present application has the effect of high production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of commutator production equipment, and in particular to a commutator pressing equipment. Background Art

[0002] The commutator is a key component in the armature of an AC motor. Its function is to alter the direction of the current in the armature winding to ensure that the direction of the electromagnetic torque remains constant. Bakelite powder is often used as a filler material in commutators due to its excellent electrical insulation properties and high-temperature resistance.

[0003] The commutator production process typically includes a pressing step, whereby a pressing machine is used to press bakelite powder into a copper shell to produce the commutator pressed product. This pressing machine, as used in related art, consists of an upper die, a middle die positioned directly below the upper die, and a lower die positioned directly below the middle die. During pressing, the bakelite powder cake is placed in the material chamber of the upper die, and the copper shell is placed in the middle die. When the upper, middle, and lower dies are closed, the bakelite powder cake is pressed into the copper shell, completing the pressing process.

[0004] In the process of realizing the present application, the inventors found that the technology has at least the following problems: the commutator pressing equipment on the market generally adopts manual loading when processing the commutator, which has low production efficiency and needs to be improved. Summary of the Invention

[0005] In order to improve production efficiency, the present application provides a commutator pressing device.

[0006] The present application provides a commutator pressing device that adopts the following technical solution:

[0007] A commutator pressing device includes a frame, an upper die, a middle die, a lower die, a pressing mechanism for pressing the bakelite powder cake in the upper die and the copper shell in the middle die, and further includes

[0008] a first pushing mechanism for moving the upper die into or out of the pressing mechanism;

[0009] a second pushing mechanism for moving the middle die into or out of the pressing mechanism;

[0010] A bakelite powder feeding mechanism for loading bakelite powder cakes into the upper mold, the bakelite powder feeding mechanism comprising a material rack, a material channel provided on the material rack for storing bakelite powder cakes, and a powder cake pushing assembly for pushing bakelite powder cakes in the material channel one by one. The powder cake pushing assembly can push the bakelite powder cakes toward the upper mold located outside the pressing mechanism;

[0011] A copper shell loading mechanism is used to load the copper shell into the middle mold, and the copper shell loading mechanism includes a pre-installed plate for accommodating the copper shell, a top pressing assembly for pressing the copper shell in the pre-installed plate into the middle mold located outside the pressing mechanism, and a copper shell pushing assembly for moving the pre-installed plate into or out of the top pressing assembly.

[0012] By adopting the above technical solution, when loading the bakelite powder cake, the upper mold is first moved out of the pressing mechanism via the first pushing mechanism, and then the bakelite powder cake stored in the material channel is pushed toward the upper mold by the powder cake pushing assembly, so that the bakelite powder cake can be pushed into the material chamber of the upper mold. When loading the copper shell, the middle mold is first moved out of the pressing mechanism via the second pushing mechanism, and then the pre-assembled plate containing the copper shell is pushed into the top pressing assembly by the copper shell pushing assembly, so that the copper shell can be pressed into the middle mold by the top pressing assembly. Then, the upper mold is moved into the pressing mechanism via the first pushing mechanism, and the middle mold is moved into the pressing mechanism via the second pushing mechanism. After the pressing mechanism is activated, the bakelite powder cake in the upper mold will be pressed into the copper shell of the middle mold, thereby forming a commutator pressed product. During the processing, the bakelite powder cake and the copper shell do not need to be manually loaded one by one by workers, which achieves a high degree of automation and production efficiency.

[0013] Optionally, the powder cake pushing assembly includes a cake pushing block slidably arranged in the material channel, a lifting member for driving the cake pushing block to move vertically, and a powder cake loading member for driving the bakelite powder cake to move horizontally toward the upper mold. The bakelite powder cake is stacked vertically in the material channel, and a powder cake discharge hole is provided on the material rack directly above the cake pushing block. The bakelite powder cake can be pushed out of the powder cake discharge hole by the cake pushing block under the action of the lifting member.

[0014] By adopting the above technical solution, before loading, the bakelite powder cakes are stacked vertically in the material channel, and the cake pusher is located below the bakelite powder cakes. During loading, the cake pusher is first driven upward by the lifting member, so that the cake pusher lifts the bakelite powder cake located above it and pushes the bakelite powder cake out of the powder cake discharge hole. The powder cake feeding member then pushes the bakelite powder cake out of the powder cake discharge hole into the upper mold, thus achieving automatic loading of the bakelite powder cake, which is easy to operate.

[0015] Optionally, the material channels are provided in plurality and are horizontally slidably arranged on the material rack. The material rack is provided with a conversion assembly for driving each material channel to move alternately to directly below the powder discharge hole. The conversion assembly includes a conversion rack and a conversion cylinder for driving the conversion rack to move along the distribution direction of the material channels. The material channels are detachably arranged on the conversion rack.

[0016] By adopting this technical solution, since multiple horizontally sliding channels are provided, workers can stack Bakelite powder cakes in each channel before processing. During processing, after loading is completed in one channel, the switching cylinder drives the switching frame to move horizontally, allowing the other channel to move directly below the powder cake discharge hole, allowing the Bakelite powder cake in the other channel to be loaded into the upper mold. This arrangement effectively reduces the frequency of pushing Bakelite powder cakes before processing and improves processing efficiency.

[0017] Optionally, the top pressure assembly includes a mounting frame, a top pressure frame vertically slidably arranged on the mounting frame, a plurality of push rods fixedly connected to the top pressure frame, a plurality of pressure rods fixedly connected to the top pressure frame, and a top pressure driving member for driving the top pressure frame to move vertically. The top pressure frame is provided with a clearance hole for the middle mold and the pre-installed plate to extend into, the push rod is fixed on the top wall of the clearance hole, the pressure rod is fixed on the bottom wall of the clearance hole, and each push rod is located directly above the adjacent pressure rod.

[0018] With this technical solution, after the copper shell is inserted into the pre-installed plate, the copper shell pusher assembly first moves the pre-installed plate into the clearance hole, and the second pusher mechanism then moves the middle mold into the clearance hole, positioning the middle mold directly above the pre-installed plate. The pusher driver then drives the push frame upward, and the pressure rod presses the copper shell in the pre-installed plate into the middle mold, achieving automatic loading of the copper shell.

[0019] After the pressing mechanism presses the bakelite powder cake into the copper shell, the resulting commutator pressing product is located in the through-hole of the center die. During processing, the pressing product must be ejected from the center die. To push the material, the center die is first moved into the clearance hole, and then the top pressing frame is driven downward. The push rod then pushes the pressing product out of the center die. The top pressing assembly is versatile and highly practical.

[0020] Optionally, the commutator pressing equipment also includes a material receiving mechanism for collecting commutator pressed products, the material receiving mechanism includes a material receiving frame located on the lower side of the pre-installed plate, a material receiving cylinder for driving the material receiving frame to move in or out of the clearance hole, the material receiving frame includes a frame body, a base plate hingedly arranged at the bottom of the frame body, and an articulated cylinder for driving the base plate to flip to open or close the frame body discharge port.

[0021] By adopting this technical solution, when the receiving frame moves into the clearance hole, if the bottom plate is in a position that closes the frame's discharge port, the pressed products pushed out of the middle die will fall into the receiving frame and be collected by the receiving frame. Once the receiving frame is full of pressed products, the receiving cylinder can first drive the receiving frame out of the clearance hole, and then the hinged cylinder can drive the bottom plate to open the frame's discharge port. At this time, the pressed products will fall out of the bottom opening of the receiving frame, so as not to affect the receiving frame's circulation.

[0022] Optionally, a conveying assembly is provided on the frame, and the conveying assembly includes a conveyor belt located directly below the material receiving frame, a conveying drive for driving the conveyor belt, and a plurality of conveyor plates spaced apart on the conveyor belt. A material box with an upper opening is placed on one side of the frame, and the material box is located at the discharge end of the conveyor belt.

[0023] By adopting the above technical solution, the pressed products dropped from the receiving frame will fall onto the conveyor belt and be transported by the conveyor belt to the material box for batch collection of the pressed products. The conveyor plate plays a role in shifting the pressed products during transportation, preventing the pressed products from accumulating on the conveyor belt due to friction resistance.

[0024] Optionally, a support plate and an adjusting cylinder for driving the support plate to move horizontally are provided on the lower side of the pre-installed plate, and pre-installed holes for the copper shell to extend into are opened on the pre-installed plate, and through holes equal in number to and corresponding to the pre-installed holes are opened on the support plate.

[0025] By adopting this technical solution, when the piston rod of the adjustment cylinder is extended or retracted, the support plate can move relative to the pre-installed plate, aligning or offsetting the through-hole with the pre-installed hole. When the support plate moves to offset the through-hole with the pre-installed hole, after the copper shell extends into the pre-installed hole, the support plate will support the copper shell from falling out of the pre-installed plate.

[0026] When processing a copper shell composed of multiple circumferentially arranged copper sheets, a plastic shell is typically placed over the copper sheets to prevent them from dispersing. During loading, the plastic shell extends into the pre-assembled hole along with the copper shell. The press assembly only pushes the copper shell into the mold, leaving the plastic shell in the pre-assembled hole. Once the support plate is moved to align the through-hole with the pre-assembled hole, the plastic shell falls down the through-hole under its own weight, preventing it from remaining in the pre-assembled plate and affecting the batch processing of the copper shell.

[0027] Optionally, the second pushing mechanism includes a second pushing frame, a second pushing cylinder arranged on the second pushing frame, and a pneumatic clamp fixedly connected to the piston rod of the second pushing cylinder. A connecting block is provided on the side wall of the middle mold close to the second pushing cylinder, and a connecting groove for the pneumatic clamp to be engaged is provided on the connecting block; a limiting cylinder for positioning the middle mold directly above the lower mold is provided on the second pushing frame, and the piston rod of the limiting cylinder is horizontally facing the middle mold and fixed with a limiting plate, and the power of the second pushing cylinder is less than the power of the limiting cylinder.

[0028] By adopting the above technical solution, when the pneumatic clamp is clamped in the connecting groove, the second push cylinder can drive the middle mold to move horizontally, so that the middle mold moves in or out of the pressing mechanism. When the piston rod of the second push cylinder is extended, the middle mold will be pushed out of the pressing mechanism so that the copper shell can be installed into the middle mold. After the copper shell is installed in place, the piston rod of the limit cylinder is extended and the piston rod of the second push cylinder is shortened. When the middle mold is pulled to abut against the limit plate, since the power of the limit cylinder is greater than the power of the second push cylinder, the middle mold is blocked by the limit plate and it will be difficult to continue moving, which helps the middle mold to move accurately to the top of the lower mold. Then the pneumatic clamp is moved out of the connecting groove and the piston rod of the limit cylinder is shortened. The pneumatic clamp will move out of the pressing mechanism under the pulling force of the second push cylinder to avoid affecting the clamping of the upper mold and the middle mold.

[0029] Optionally, a loosening assembly for loosening waste material in the upper mold is provided on one side of the frame, and the loosening assembly includes a bracket, a loosening plate vertically slidably arranged on the bracket, a plurality of ejectors spaced apart on the upper side of the loosening plate, and a loosening driving member for driving the loosening plate to move vertically; when the upper mold moves out of the pressing mechanism under the drive of the first pushing mechanism, the ejector is aligned with the through hole opened in the bottom wall of the upper mold.

[0030] By adopting the above technical solution, when the pressing mechanism presses the bakelite powder cake into the copper shell, the bakelite powder cake waste will be stuck in the through-hole opened in the bottom wall of the upper mold. To prevent the residual waste from affecting subsequent processing, the waste must be removed from the upper mold. To remove the waste, the first pushing mechanism can be used to move the upper mold above the ejector pins. Then, the loosening plate is driven upward by the loosening member. The ejector pins will move synchronously and push the waste upward, so that the waste stuck in the bottom wall of the upper mold can be pushed out of the through-hole, facilitating the subsequent removal of the waste from the upper mold.

[0031] Optionally, a suction assembly for sucking out waste material from the upper mold is provided on one side of the frame, and the suction assembly includes an adsorption frame, a plurality of suction cups fixedly arranged on the lower side of the adsorption frame, a first adsorption power member for driving the adsorption frame to move vertically, and a second adsorption power member for driving the adsorption frame to move horizontally; when the upper mold moves out of the pressing mechanism driven by the first pushing mechanism, the suction cup can be moved to directly above the upper mold under the action of the second adsorption power member.

[0032] By adopting this technical solution, after the waste material is pushed out of the bottom wall of the upper mold by the loosening assembly, the second suction component is first used to move the suction rack to directly above the upper mold. The first suction power component then drives the suction rack downward, causing the suction cup to engage with the waste material. After the first suction power component drives the suction rack upward, the suction cup pulls the waste material out of the upper mold, thus achieving automatic waste removal. This eliminates the need for manual material removal, simplifies operation, and improves production efficiency.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. When loading bakelite powder cakes, the upper mold is first moved out of the pressing mechanism by the first pushing mechanism, and then the bakelite powder cakes are pushed into the material chamber of the upper mold by the bakelite powder feeding mechanism. When loading copper shells, the middle mold is first moved out of the pressing mechanism by the second pushing mechanism, and then the copper shell feeding mechanism is used to press the copper shell into the middle mold, which saves time and labor and has high production efficiency.

[0035] 2. When the pre-installed plate and the middle die are moved into the clearance hole, the middle die is located on the upper side of the pre-installed plate. After the top pressure frame moves upward, the pressing rod will press the copper shell in the pre-installed plate into the middle die, thereby realizing automatic loading of the copper shell; after the pressing mechanism presses the bakelite powder cake in the upper die into the copper shell of the middle die, the formed commutator pressed product is located in the middle die. At this time, if the middle die is pushed into the clearance hole again and the top pressure frame is moved downward, the push rod will push the pressed product in the middle die out, thereby realizing automatic unloading of the pressed product;

[0036] 3. The loosening component can push out the bakelite powder waste remaining on the bottom wall of the upper mold, and the suction component can suck the bakelite powder waste out of the upper mold, which helps to further reduce the labor intensity of workers and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural diagram of an embodiment of the present application.

[0038] Figure 2 It is a structural diagram highlighting the first pushing mechanism and the pressing mechanism in the embodiment of the present application.

[0039] Figure 3 It is a structural diagram highlighting another perspective of the first pushing mechanism, the second pushing mechanism, and the pressing mechanism in the embodiment of the present application.

[0040] Figure 4 It is a structural diagram highlighting the lower mold and the second sliding mechanism in the embodiment of the present application.

[0041] Figure 5 It is a structural schematic diagram of the bakelite powder feeding mechanism in the embodiment of the present application.

[0042] Figure 6 yes Figure 5 Enlarged schematic diagram of point A in the middle.

[0043] Figure 7 yes Figure 5 Enlarged schematic diagram of point B in the middle.

[0044] Figure 8 It is a structural schematic diagram of the material channel in the embodiment of the present application.

[0045] Figure 9 It is a structural diagram of the copper shell feeding mechanism, material receiving mechanism and conveying assembly in the embodiment of the present application.

[0046] Figure 10 It is an exploded schematic diagram highlighting the support plate in the embodiment of the present application.

[0047] Figure 11 It is a structural schematic diagram of the top pressure assembly in an embodiment of the present application.

[0048] Figure 12It is a structural diagram of the material receiving mechanism in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 1. Frame; 11. Loosening assembly; 111. Bracket; 112. Loosening plate; 113. Ejector pin; 114. Loosening drive element; 12. Suction assembly; 121. Adsorption rack; 122. Suction cup; 123. First adsorption power element; 124. Second adsorption power element; 13. Conveyor assembly; 131. Conveyor belt; 132. Conveyor drive element; 133. Conveyor plate; 14. Material box;

[0051] 2. Upper die; 3. Middle die; 31. Connecting block; 32. Connecting groove; 4. Lower die; 41. Shaping column;

[0052] 5. Pressing mechanism; 51. Pressing frame; 52. Pressing cylinder; 53. Pressing plate; 531. Pressing block; 54. Guide frame;

[0053] 6. First push mechanism; 61. First push frame; 62. First push cylinder;

[0054] 7. Second push mechanism; 71. Second push frame; 711. Limit cylinder; 712. Limit plate; 72. Second push cylinder; 73. Pneumatic clamp;

[0055] 8. Bakelite powder feeding mechanism; 81. Material rack; 811. Powder discharge hole; 82. Material channel; 821. First feeding plate; 822. Second feeding plate; 823. Feed rod; 824. First feeding hole; 825. Second feeding hole; 83. Powder pushing assembly; 831. Pushing block; 832. Lifting member; 833. Powder feeding member; 8331. Powder feeding block; 8332. Powder feeding cylinder; 84. Conversion assembly; 841. Conversion rack; 842. Conversion cylinder;

[0056] 9. Copper shell feeding mechanism; 91. Vibrating plate; 92. Support platform; 93. Robot; 94. Pre-installed plate; 941. Pre-installed hole; 95. Pressing assembly; 951. Mounting frame; 952. Pressing frame; 953. Push rod; 954. Pressing rod; 955. Pressing drive element; 956. Clearance hole; 96. Copper shell pushing assembly; 961. Copper shell pushing cylinder; 962. Copper shell pushing block; 97. Support plate; 971. Through hole; 98. Adjusting cylinder;

[0057] 10. Material receiving mechanism; 101. Material receiving frame; 1011. Frame body; 1012. Bottom plate; 1013. Articulated cylinder; 102. Material receiving cylinder. DETAILED DESCRIPTION

[0058] The following is combined with Figure 1-12 This application is described in further detail.

[0059] An embodiment of the present application discloses a commutator pressing device.

[0060] Reference Figure 1 、 Figure 2 and Figure 3 The commutator pressing equipment includes a frame 1, an upper mold 2, a middle mold 3, a lower mold 4, a pressing mechanism 5 for pressing the bakelite powder cake in the upper mold 2 and the copper shell in the middle mold 3, a first pushing mechanism 6 for moving the upper mold 2 into or out of the pressing mechanism 5, a second pushing mechanism 7 for moving the middle mold 3 into or out of the pressing mechanism 5, a bakelite powder feeding mechanism 8 for loading the bakelite powder cake into the material chamber of the upper mold 2, a copper shell feeding mechanism 9 for loading the copper shell into the middle mold 3, and a receiving mechanism 10 for collecting the commutator pressed products. The above-mentioned commutator pressed products refer to the products formed after the bakelite powder cake is pressed into the copper shell.

[0061] Reference Figure 2 、 Figure 3 The first push mechanism 6 includes a first push frame 61 and a first push cylinder 62 mounted on the first push frame 61. The cylinder barrel of the first push cylinder 62 is fixedly connected to the first push frame 61, and the piston rod is horizontally arranged and fixedly connected to the upper mold 2. The upper mold 2 is horizontally slidably mounted on the first push frame 61. When the piston rod of the first push cylinder 62 is extended or retracted, the upper mold 2 moves horizontally along the first push frame 61 and moves into or out of the pressing mechanism 5.

[0062] Reference Figure 3 、 Figure 4 The second push mechanism 7 comprises a second push frame 71, a second push cylinder 72 mounted on the second push frame 71, and a pneumatic clamp 73 fixedly connected to the piston rod of the second push cylinder 72. The piston rod of the second push cylinder 72 is horizontally arranged and extends and retracts perpendicularly to the piston rod of the first push cylinder 62. A connecting block 31 is fixed to the side wall of the middle mold 3 near the second push cylinder 72. The side wall of the connecting block 31 is provided with a connecting slot 32 for the pneumatic clamp 73 to engage. When the pneumatic clamp 73 is connected to the connecting block 31, the second push cylinder 72 can drive the middle mold 3 to move horizontally, allowing the middle mold 3 to move into or out of the pressing mechanism 5.

[0063] Reference Figure 3 、 Figure 4To prevent the pneumatic clamp 73 from interfering with the closing of the upper mold 2 and the middle mold 3, a limit cylinder 711 is provided on the second push frame 71. The piston rod of the limit cylinder 711 is positioned horizontally toward the middle mold 3 and secured to a limit plate 712. The diameter of the piston rod of the limit cylinder 711 is greater than that of the piston rod of the second push cylinder 72, so that the force generated by the limit cylinder 711 when activated is greater than the force of the second push cylinder 72. Before the middle mold 3 is moved into the pressing mechanism 5, the piston rod of the limit cylinder 711 is first extended to move the limit plate 712 horizontally toward the middle mold 3. The piston rod of the second push cylinder 72 is then shortened until the middle mold 3 abuts the limit plate 712, preventing further movement. The pneumatic clamp 73 is then separated from the connecting block 31, and the piston rod of the limit cylinder 711 is shortened. At this point, the force of the second push cylinder 72 pulls the pneumatic clamp 73 out of the pressing mechanism 5.

[0064] Reference Figure 2 、 Figure 3 The pressing mechanism 5 includes a pressing frame 51, a pressing cylinder 52 mounted on the pressing frame 51, a pressing plate 53 fixed to the piston rod of the pressing cylinder 52, and a guide frame 54 fixed below the pressing plate 53. The piston rod of the pressing cylinder 52 is vertically downwardly disposed, and the guide frame 54 is vertically slidably disposed within the pressing frame 51. When the upper mold 2 is moved into the pressing mechanism 5 under the action of the first pushing mechanism 6, the pressing plate 53 is located directly above the upper mold 2. When the piston rod of the pressing cylinder 52 is extended, the pressing plate 53 and the guide frame 54 move downward, causing the upper mold 2 to move downward and close with the middle mold 3 and lower mold 4 located below it.

[0065] Reference Figure 2 、 Figure 3 The lower side of the pressing plate 53 is fixedly connected to a cake pressing block 531. The size of the cake pressing block 531 is slightly smaller than the size of the material chamber in the upper mold 2. A plurality of through holes are provided on the bottom wall of the upper mold 2. When the pressing plate 53 drives the upper mold 2 and the middle mold 3 to close the mold, the cake pressing block 531 will press the bakelite powder cake in the upper mold 2 into the copper shell of the middle mold 3 through the above-mentioned through holes. It should be noted that in order to enable the first push frame 61 to move vertically synchronously with the upper mold 2, the guide frame 54 should be slidably inserted into the first push frame 61, and a lifting block abutting against the lower side of the first push frame 61 should be provided on the guide frame 54. When the piston rod of the pressing cylinder 52 is shortened, the lifting block can lift the first push frame 61, thereby separating the upper mold 2 from the middle mold 3.

[0066] Reference Figure 3 、 Figure 4The upper side of the lower mold 4 is fixed with multiple shaping columns 41. These columns 41 correspond one-to-one with the through-holes in the middle mold 3 for inserting the copper shell. When the upper mold 2, middle mold 3, and lower mold 4 are closed, the shaping columns 41 extend into the corresponding through-holes in the middle mold 3 to achieve the desired shape. In actual processing, the lower mold 4 can be configured as a heating plate that can be electrically heated. This allows the pressing mechanism 5 to provide heat for the press-fitting of the bakelite powder cake and the copper shell.

[0067] Reference Figure 1 、 Figure 2 Since bakelite powder waste will inevitably be stuck in the bottom wall of the upper mold 2 after processing, in order to move the bakelite powder waste out of the upper mold 2, a loosening component 11 and a suction component 12 are provided on one side of the frame 1, wherein the loosening component 11 is used to push the bakelite powder waste out of the bottom wall of the upper mold 2, and the suction component 12 is used to suck away the waste in the upper mold 2.

[0068] Reference Figure 2 The material loosening assembly 11 includes a bracket 111 mounted on the first push frame 61, a material loosening plate 112 vertically slidably mounted on the bracket 111, a plurality of ejector pins 113 spaced apart above the material loosening plate 112, and a material loosening drive 114 for vertically moving the material loosening plate 112. In this embodiment, the material loosening drive 114 is preferably a material loosening cylinder. When the upper mold 2 is moved out of the pressing mechanism 5 under the drive of the first push mechanism 6, the ejector pins 113 are located directly below the through-holes defined in the bottom wall of the upper mold 2. After the material loosening drive 114 drives the material loosening plate 112 upward, the ejector pins 113 can eject the waste material stuck in the through-holes of the upper mold 2.

[0069] Reference Figure 2 、 Figure 3 The suction assembly 12 includes a suction frame 121, a plurality of suction cups 122 fixedly arranged on the lower side of the suction frame 121, a first suction power member 123 for driving the suction frame 121 to move vertically, and a second suction power member 124 for driving the suction frame 121 to move horizontally. In this embodiment, the first suction power member 123 and the second suction power member 124 are preferably cylinders, and the second suction power member 124 adopts a cylinderless cylinder, which is arranged on the guide frame 54, and the cylinder of the first suction power member 123 is arranged on the slide of the cylinderless cylinder, and the piston rod is fixedly connected to the suction frame 121. When the suction assembly 12 is working, the suction frame 121 is first moved to the top of the upper mold 2, and then the suction frame 121 is driven to move downward, so that the suction cup 122 absorbs the waste material of the upper mold 2, and then the suction frame 121 is driven to move upward, and the suction cup 122 automatically sucks the bakelite powder waste out of the upper mold 2.

[0070] Reference Figure 5 、 Figure 6The bakelite powder feeding mechanism 8 includes a material rack 81, a plurality of material channels 82 horizontally slidingly arranged on the material rack 81, and a powder cake pushing component 83 for pushing the bakelite powder cakes in the material channel 82 out one by one. In this embodiment, two material channels 82 are provided to illustrate its structure.

[0071] Reference Figure 7 、 Figure 8 Each material channel 82 includes a first material plate 821, a second material plate 822 located directly below the first material plate 821, and four material rods 823 fixedly connected between the first and second material plates 821, 822. The four material rods 823 enclose a vertically extending stacking area, in which the bakelite powder cakes are stacked vertically. The first material plate 821 is provided with a first material hole 824 that communicates with the stacking area, and the second material plate 822 is provided with a second material hole 825 that communicates with the stacking area. The aperture of the first material hole 824 is larger than the diameter of the bakelite powder cake, and the aperture of the second material hole 825 is smaller than the diameter of the bakelite powder cake, so that the bakelite powder cakes can be moved upward and out of the stacking area when stacked on the material channel 82.

[0072] Reference Figure 5 、 Figure 6 The powder cake pushing assembly 83 includes a cake pushing block 831 slidably disposed in one of the material channels 82, a lifting member 832 for driving the cake pushing block 831 to move vertically, and a cake loading member 833 for driving the bakelite powder cake to move horizontally. The lifting member 832 in this embodiment adopts a dust-free screw slide, and the cake pushing block 831 is fixedly connected to the above-mentioned slide. The width of the cake pushing block 831 is smaller than the aperture of the second material hole 825. The material rack 81 is provided with a powder cake discharge hole 811 located directly above the cake pushing block 831. The aperture of the powder cake discharge hole 811 is larger than the diameter of the bakelite powder cake. When the lifting member 832 works to drive the cake pushing block 831 to move upward, the cake pushing block 831 can push the bakelite powder cake located on its upper side upward, so that the bakelite powder cake is pushed out of the powder cake discharge hole 811.

[0073] Reference Figure 5 、 Figure 6 The powder cake loading member 833 includes a powder cake loading block 8331 slidably mounted on the material frame 81 and a powder cake loading cylinder 8332 for driving the powder cake loading block 8331 to move horizontally toward the upper mold 2. The cylinder barrel of the powder cake loading cylinder 8332 is fixedly connected to the material frame 81, and the piston rod is fixedly connected to the powder cake loading block 8331. When the piston rod of the powder cake loading cylinder 8332 is extended, the powder cake loading block 8331 can push the ejected bakelite powder cake toward the upper mold 2 after it has been removed from the pressing mechanism 5, allowing the bakelite powder cake to fall into the material chamber of the upper mold 2.

[0074] Reference Figure 5 、 Figure 7The material rack 81 is provided with a conversion assembly 84 for driving the material channel 82 to move horizontally. The conversion assembly 84 includes a conversion frame 841 slidably provided on the material rack 81, and a conversion cylinder 842 for driving the conversion frame 841 to move horizontally. The cylinder barrel of the conversion cylinder 842 is fixedly connected to the material channel 82, and the piston rod is fixedly connected to the conversion frame 841. The extension and retraction direction of the piston rod of the conversion cylinder 842 is parallel to the distribution direction of the material channel 82. The material channel 82 is detachably connected to the conversion frame 841. Specifically, the connection between the material channel 82 and the conversion frame 841 can be bolted. When the piston rod of the conversion cylinder 842 is extended or retracted, the conversion frame 841 will drive the material channel 82 to move horizontally, so that each material channel 82 is alternately moved to the position directly below the powder cake discharge hole 811, so that the powder cake pushing assembly 83 can push the bakelite powder cakes of different material channels 82 to the upper mold 2.

[0075] Reference Figure 9 、 Figure 10 The copper shell feeding mechanism 9 includes a vibration plate 91, a support platform 92 for receiving the copper shells output from the vibration plate 91, a manipulator 93 for clamping the copper shells in the support platform 92, a pre-installed plate 94 for accommodating the copper shells, a top-pressing assembly 95 for pressing the copper shells in the pre-installed plate 94 into the middle mold 3, and a copper shell pushing assembly 96 for driving the pre-installed plate 94 to move in or out of the top-pressing assembly 95. The support platform 92 is set at the discharge end of the vibration plate 91, and the pre-installed plate 94 is provided with a plurality of pre-installed holes 941 for the copper shells to extend into. During loading, the copper shells are placed in batches in the vibration plate 91. When the vibration plate 91 is working, the copper shells will fall onto the support platform 92 so that they can be clamped one by one into the pre-installed holes 941 by the manipulator 93.

[0076] Reference Figure 10 To prevent the copper shell from falling through the pre-installation holes 941, a support plate 97 is provided on the lower side of the pre-installation plate 94. The support plate 97 is provided with through-holes 971, which are equal in number to and correspond to the pre-installation holes 941. The diameter of the through-holes 971 is equal to the diameter of the pre-installation holes 941. When the copper shell is loaded, the support plate 97 is positioned so that the through-holes 971 are eccentrically misaligned with the pre-installation holes 941. When the copper shell is placed in the pre-installation hole 941, the support plate 97 abuts against the bottom of the copper shell, preventing it from falling.

[0077] Reference Figure 9 、 Figure 10If the copper shell to be processed includes multiple circumferentially arranged copper sheets, a plastic shell is usually placed on the outside of the copper sheet to prevent the copper sheets from spreading out during transportation, so as to use the plastic shell to circle the copper sheets together. When loading, the plastic shell will extend into the pre-installed plate 94 together with the copper sheet. When the top pressure component 95 is working, it will only press the copper sheet into the middle mold 3, and the plastic shell will remain in the pre-installed hole 941. In order to enable the plastic shell to be discharged from the pre-installed hole 941, an adjusting cylinder 98 is installed on the frame 1. The piston rod of the adjusting cylinder 98 is horizontally arranged and fixedly connected to the support plate 97. The support plate 97 can move horizontally under the drive of the adjusting cylinder 98, so that the through hole 971 moves to be completely aligned with the pre-installed hole 941, so that the plastic shell can be automatically blanked.

[0078] Reference Figure 9 、 Figure 10 The copper shell push assembly 96 includes a copper shell push cylinder 961 mounted on the frame 1 and a copper shell push block 962 fixedly connected to the piston rod of the copper shell push cylinder 961. The piston rod of the copper shell push cylinder 961 is positioned horizontally toward the press assembly 95. The pre-installed plate 94 is removably connected to the copper shell push block 962 via bolts. When the piston rod of the copper shell push cylinder 961 is extended or retracted, the pre-installed plate 94 moves in or out of the press assembly 95.

[0079] Reference Figure 9 、 Figure 11 The pressing assembly 95 includes a mounting frame 951 fixed to the frame 1, a pressing frame 952 slidably mounted on the mounting frame 951, a plurality of push rods 953 fixedly connected to the top wall of the pressing frame 952, a plurality of pressure rods 954 fixedly connected to the bottom wall of the pressing frame 952, and a pressing driver 955 for driving the pressing frame 952 vertically. In this embodiment, the pressing driver 955 is preferably a pressing cylinder. The number of push rods 953 and pressure rods 954 is equal to the number of through-holes in the middle mold 3, and each push rod 953 is located directly above an adjacent pressure rod 954. A clearance hole 956 is defined in the middle of the pressing frame 952 for the middle mold 3 and pre-installed plate 94 to extend horizontally therethrough. A slide rail is provided on the frame 1 for the horizontal sliding of the middle mold 3. The slide rail is higher than the pre-installed plate 94, so that when the middle mold 3 moves into the clearance hole 956, it is located above the pre-installed plate 94.

[0080] Reference Figure 9 、 Figure 11 When the middle mold 3 and the pre-installed plate 94 filled with copper shells extend into the clearance hole 956, the top-pressing driver 955 drives the top-pressing frame 952 upward, and the pressing rod 954 presses the copper shells on the pre-installed plate 94 into the through-hole of the middle mold 3, thereby completing the automatic loading of the copper shells. After the pressing mechanism 5 presses the bakelite powder cake into the copper shells, the resulting commutator pressed product is located in the through-hole of the middle mold 3. When the middle mold 3, with the pressed product embedded in it, is moved into the clearance hole 956, the top-pressing driver 955 drives the top-pressing frame 952 downward, and the push rod 953 pushes the pressed product out of the middle mold 3, thereby completing the automatic unloading of the pressed product.

[0081] Reference Figure 9 、 Figure 12 The receiving mechanism 10 includes a receiving frame 101 located below the pre-installed plate 94 and a receiving cylinder 102 for driving the receiving frame 101 to move horizontally into or out of the clearance hole 956. The cylinder barrel of the receiving cylinder 102 is fixedly connected to the frame 1, and the piston rod is fixedly connected to the receiving frame 101. The piston rod of the receiving cylinder 102 is horizontally arranged toward the top pressure frame 952. When the piston rod of the receiving cylinder 102 is extended, the receiving frame 101 is pushed into the clearance hole 956 to receive the pressed product ejected from the middle mold 3. When the piston rod of the receiving cylinder 102 is shortened, the receiving frame 101 is pulled to the bottom of the pre-installed plate 94 to receive the plastic shell dropped from the pre-installed plate 94.

[0082] Reference Figure 12 The material receiving frame 101 includes a frame body 1011, a bottom plate 1012 hingedly mounted at the bottom of the frame body 1011, and an articulated cylinder 1013 for driving the bottom plate 1012 to flip. The cylinder barrel of the articulated cylinder 1013 is hingedly mounted on the frame body 1011, and the piston rod is hingedly connected to the movable end of the bottom plate 1012. The movable end of the bottom plate 1012 refers to the end of the bottom plate 1012 that can rotate relative to the frame body 1011. When the piston rod of the articulated cylinder 1013 is extended or retracted, the bottom plate 1012 can rotate relative to the frame body 1011 to open or close the material discharge port of the frame body 1011.

[0083] Reference Figure 9 The frame 1 is provided with a conveying assembly 13 located on the lower side of the material receiving mechanism 10. The conveying assembly 13 includes a conveyor belt 131, a conveying drive member 132 for driving the conveyor belt 131, and a plurality of conveyor plates 133 spaced apart on the conveyor belt 131. When the material receiving cylinder 102 drives the material receiving frame 101 to move out of the clearance hole 956, the conveyor belt 131 is located directly below the material receiving frame 101. At this time, if the bottom plate 1012 is opened, the pressed products or plastic shells in the material receiving frame 101 will fall onto the conveyor belt 131 and be transported to one side by the conveyor belt 131. The conveying drive member 132 in this embodiment includes a motor, a sprocket and a chain structure. The specific connection method of the above structure belongs to the prior art and will not be elaborated here. A material box 14 with an upper opening is provided on one side of the frame 1. The material box 14 is located at the discharge end of the conveyor belt 131 and is used to receive the pressed products or plastic shells sent from the conveyor belt 131.

[0084] The implementation principle of a commutator pressing device according to an embodiment of the present application is as follows: when processing the commutator, the copper shell is first loaded into the pre-installed plate 94 by the manipulator 93, and then the pre-installed plate 94 is driven to move into the clearance hole 956 by the copper shell pushing assembly 96, and the middle mold 3 is driven to move into the clearance hole 956 by the second pushing mechanism 7, and then the top pressing frame 952 is driven upward by the top pressing driving member 955, and the pressing rod 954 automatically presses the copper shell into the middle mold 3 to realize automatic loading of the copper shell. The bakelite powder cake is vertically stacked in the material channel 82. When the bakelite powder cake is loaded, the upper mold 2 is first driven to move out of the pressing mechanism 5 by the first pushing mechanism 6, and then the cake pushing block 831 is driven upward by the lifting member 832, so that the cake pushing block 831 pushes the bakelite powder cake above it out of the powder cake discharge hole 811, and then the bakelite powder cake is horizontally pushed into the material chamber of the upper mold 2 by the powder cake loading member 833 to realize automatic loading of the bakelite powder cake.

[0085] After the copper shell and bakelite powder cake are loaded, the upper mold 2 is first moved into the pressing mechanism 5 by the first pushing mechanism 6, and the middle mold 3 is moved into the pressing mechanism 5 by the second pushing mechanism 7. Then the pressing mechanism 5 is started to close the upper mold 2, the middle mold 3, and the lower mold 4, so that the bakelite powder cake in the upper mold 2 is pressed into the copper shell of the middle mold 3. The formed commutator pressed product is located in the middle mold 3, and the bakelite powder waste is located in the upper mold 2. After the upper mold 2 is moved out of the pressing mechanism 5, the waste material stuck on the bottom wall of the upper mold 2 can be loosened by the loosening component 11, and then the waste material can be sucked out of the middle mold 3 by the suction component 12 to achieve automatic removal of the bakelite powder waste.

[0086] During unloading, the middle mold 3 and the receiving frame 101 are first pushed into the clearance hole 956. The pressing frame 952 is then moved downward by the pressing drive 955. The push rod 953 automatically pushes the pressed product out of the middle mold 3, causing it to fall into the receiving frame 101. The receiving frame 101 is then moved out of the clearance hole 956, and the bottom plate 1012 is opened. The pressed product falls onto the conveyor belt 131 and is transported by the conveyor belt 131 to the material box 14.

[0087] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A commutator pressing device, comprising a frame (1), an upper die (2), a middle die (3), a lower die (4), and a pressing mechanism (5) for pressing the bakelite powder cake in the upper die (2) and the copper shell in the middle die (3), characterized in that: Also includes a first pushing mechanism (6) for moving the upper mold (2) into or out of the pressing mechanism (5); a second pushing mechanism (7) for moving the middle mold (3) into or out of the pressing mechanism (5); A bakelite powder feeding mechanism (8) for loading bakelite powder cakes into an upper mold (2), the bakelite powder feeding mechanism (8) comprising a material rack (81), a material channel (82) disposed on the material rack (81) for storing bakelite powder cakes, and a powder cake pushing assembly (83) for pushing bakelite powder cakes in the material channel (82) one by one, the powder cake pushing assembly (83) being capable of pushing bakelite powder cakes toward the upper mold (2) located outside the pressing mechanism (5); A copper shell loading mechanism (9) for loading the copper shell into the middle mold (3), the copper shell loading mechanism (9) comprising a pre-installed plate (94) for accommodating the copper shell, a pressing assembly (95) for pressing the copper shell in the pre-installed plate (94) into the middle mold (3) located outside the pressing mechanism (5), and a copper shell pushing assembly (96) for moving the pre-installed plate (94) into or out of the pressing assembly (95); The pressing assembly (95) includes a mounting frame (951), a pressing frame (952) vertically slidably arranged on the mounting frame (951), a plurality of push rods (953) fixedly connected to the pressing frame (952), a plurality of pressure rods (954) fixedly connected to the pressing frame (952), and a pressing driving member (955) for driving the pressing frame (952) to move vertically. The pressing frame (952) is provided with a clearance hole (956) for the middle mold (3) and the pre-installed plate (94) to extend therein. The push rods (953) are fixed on the top wall of the clearance hole (956), and the pressure rods (954) are fixed on the bottom wall of the clearance hole (956). Each push rod (953) is located directly above an adjacent pressure rod (954). A material loosening assembly (11) for loosening waste material in the upper mold (2) is provided on one side of the frame (1), and the material loosening assembly (11) comprises a bracket (111), a material loosening plate (112) vertically slidably arranged on the bracket (111), a plurality of ejector pins (113) spaced apart on the upper side of the material loosening plate (112), and a material loosening driving member (114) for driving the material loosening plate (112) to move vertically; when the upper mold (2) moves out of the pressing mechanism (5) under the drive of the first pushing mechanism (6), the ejector pins (113) are aligned with the through holes provided on the bottom wall of the upper mold (2).

2. The commutator pressing equipment according to claim 1, characterized in that: The powder cake pushing assembly (83) includes a cake pushing block (831) slidably arranged on the material channel (82), a lifting member (832) for driving the cake pushing block (831) to move vertically, and a cake loading member (833) for driving the bakelite powder cake to move horizontally toward the upper mold (2). The bakelite powder cake is vertically stacked in the material channel (82). The material rack (81) is provided with a cake discharge hole (811) located directly above the cake pushing block (831). The bakelite powder cake can be pushed out of the cake discharge hole (811) by the cake pushing block (831) under the action of the lifting member (832).

3. The commutator pressing equipment according to claim 2, characterized in that: The material channels (82) are provided in a plurality and are horizontally slidably arranged on the material rack (81). The material rack (81) is provided with a conversion assembly (84) for driving each material channel (82) to move alternately to the position directly below the powder discharge hole (811). The conversion assembly (84) includes a conversion rack (841) and a conversion cylinder (842) for driving the conversion rack (841) to move along the distribution direction of the material channels (82). The material channels (82) are detachably arranged on the conversion rack (841).

4. The commutator pressing equipment according to claim 1, characterized in that: The invention also includes a material receiving mechanism (10) for collecting commutator pressed products, wherein the material receiving mechanism (10) includes a material receiving frame (101) located on the lower side of the pre-installed plate (94), a material receiving cylinder (102) for driving the material receiving frame (101) to move into or out of the clearance hole (956), and the material receiving frame (101) includes a frame body (1011), a bottom plate (1012) hingedly arranged at the bottom of the frame body (1011), and a hinged cylinder (1013) for driving the bottom plate (1012) to flip to open or close the discharge port of the frame body (1011).

5. The commutator pressing equipment according to claim 4, characterized in that: A conveying assembly (13) is provided on the frame (1), and the conveying assembly (13) comprises a conveyor belt (131) located directly below the receiving frame (101), a conveying driving member (132) for driving the conveyor belt (131), and a plurality of conveying plates (133) arranged at intervals on the conveyor belt (131). A material box (14) with an upper opening is placed on one side of the frame (1), and the material box (14) is located at the discharge end of the conveyor belt (131).

6. The commutator pressing equipment according to claim 1, characterized in that: A supporting plate (97) and an adjusting cylinder (98) for driving the supporting plate (97) to move horizontally are provided on the lower side of the pre-installed plate (94); pre-installed holes (941) for the copper shell to extend into are provided on the pre-installed plate (94); and through holes (971) are provided on the supporting plate (97) in the same number as the pre-installed holes (941) and in one-to-one correspondence with each other.

7. The commutator pressing equipment according to claim 1, characterized in that: The second pushing mechanism (7) comprises a second pushing frame (71), a second pushing cylinder (72) arranged on the second pushing frame (71), and a pneumatic clamp (73) fixedly connected to the piston rod of the second pushing cylinder (72); a connecting block (31) is provided on the side wall of the middle mold (3) close to the second pushing cylinder (72); a connecting groove (32) for the pneumatic clamp (73) to be clamped is provided on the connecting block (31); a limiting cylinder (711) for positioning the middle mold (3) directly above the lower mold (4) is provided on the second pushing frame (71); the piston rod of the limiting cylinder (711) is horizontally directed toward the middle mold (3) and fixed with a limiting plate (712); the power of the second pushing cylinder (72) is less than the power of the limiting cylinder (711).

8. The commutator pressing device according to claim 7, characterized in that: A suction assembly (12) for sucking out waste material from the upper mold (2) is provided on one side of the frame (1), the suction assembly (12) comprising an adsorption frame (121), a plurality of suction cups (122) fixedly arranged on the lower side of the adsorption frame (121), a first adsorption power member (123) for driving the adsorption frame (121) to move vertically, and a second adsorption power member (124) for driving the adsorption frame (121) to move horizontally; when the upper mold (2) moves out of the pressing mechanism (5) under the drive of the first pushing mechanism (6), the suction cups (122) can move to directly above the upper mold (2) under the action of the second adsorption power member (124).

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