Pressing machine for compression molding of commutator

Abstract

The press comprises main frames, a U-shaped frame is fixedly installed at the top ends of the main frames, a bottom frame is fixedly connected to the position, located between the two main frames, of the bottom end of the U-shaped frame, a first installation frame is installed on the side, opposite to the main frames, of the U-shaped frame, and a first air cylinder is installed on the front face of the first installation frame. Sliding rails are installed on the sides, close to each other, of the two main frames, sliding blocks are slidably connected into the sliding rails, a lower die is connected between the two sliding blocks, and a material groove is formed in the top end of the lower die. According to the pressing machine for compression molding of the commutator, through cooperative use of the first air cylinder, the sliding rail and other structures, after compression molding is completed, the second air cylinder drives the upper mold to move upwards to enable the upper mold to be separated from the lower mold, the first air cylinder pulls back the lower mold till the lower mold is separated from the interior of the shell, no shielding object exists above the lower mold, the operable space is large, and operation is convenient. The commutator taking device can prevent the commutator from being knocked and the like during material taking to a certain extent, and improves the yield of equipment to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of commutator technology, specifically to a commutator compression molding press. Background Technology

[0002] A commutator, also known as a rectifier, is an important component of the armature of both DC and AC commutator motors. It consists of numerous copper plates separated by mica sheets, arranged in a cylindrical or disc shape. Each copper plate is connected to several armature winding elements. As the armature rotates, the copper plates successively contact fixed brushes. In a DC motor, the brushes and commutator convert the alternating current (AC) in the armature windings into direct current (DC) between the brushes. In an AC commutator motor, it ensures that the frequency of the AC current between the brushes meets the operating requirements.

[0003] A search revealed that in the prior art, utility model publication CN215791240U discloses a compression molding die for a permanent magnet DC torque motor commutator, comprising: a mold assembly including an upper mold, a middle mold, and a lower mold, the middle mold being located between the upper and lower molds, and having an mounting opening; and a mold core assembly having a limiting part for limiting the copper sheets of the commutator, the mold core assembly being accommodated in the mounting opening, and the upper mold having a first feed hole communicating with the mounting opening. The technical effect of this solution is that bakelite powder enters the mounting opening through the first feed hole and flows between adjacent copper sheets, improving the insulation between adjacent copper sheets.

[0004] And a positioning and pressing mechanism for a fully automated commutator production equipment with announcement number CN212136861U;

[0005] The above-mentioned technical solutions, through different methods, make the compression molding production of commutators more efficient and convenient. However, they still have the following shortcomings: the upper and lower pressing structures of the above-mentioned methods are always on the same vertical line, and the operating space after separation is small. When the commutator is being picked up, it is easy to collide with other structures of the device, causing dents or scratches on the surface, which affects the yield. At the same time, the press will generate a certain amount of noise during operation, affecting the working condition and health of the workers. In addition, the equipment will generate a certain amount of gas containing silver, copper and plastic particles during the compression molding process. If it is not discharged in time, it will also affect the stable operation of the workers and the equipment. Therefore, we propose a commutator compression molding press to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a commutator compression molding press to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A commutator compression molding press includes a main frame, a U-shaped frame fixedly mounted on the top of the main frame, a base frame fixedly connected to the bottom of the U-shaped frame and located between the two main frames, a first mounting bracket mounted on the side of the U-shaped frame opposite to the main frame, a first cylinder mounted on the front of the first mounting bracket, a slide rail mounted on the side of the two main frames close to each other, a slider slidably connected inside the slide rail, a lower mold connected between the two sliders, and a material groove opened at the top of the lower mold.

[0009] As a further embodiment of this utility model, a housing is installed at the top of the main frame and on one side of the U-shaped frame. A second mounting bracket is installed at the top of the housing. A second cylinder is installed on the front of the second mounting bracket. An upper mold is connected to the bottom of the second cylinder and inside the housing.

[0010] As a further embodiment of this utility model, a movable cavity is provided at the bottom end of the lower mold and below the material groove, and an ejection structure is installed inside the movable cavity;

[0011] The ejection structure includes a chassis movably connected inside the material trough. The top of the chassis has a storage slot, and the bottom of the chassis, located below the storage slot, has a through hole. A connecting rod is movably connected inside the through hole. The top of the connecting rod is connected to a tray, and the bottom of the connecting rod is connected to a fixing plate.

[0012] As a further embodiment of this utility model, an air supply pipe is installed inside the base frame, a high-pressure blower is connected to the tail end of the air supply pipe, and a nozzle is connected to the head end of the air supply pipe.

[0013] A connecting pipe is installed at the bottom of the lower mold and below the movable chamber, and a sleeve is fixedly connected to the bottom end of the connecting pipe.

[0014] As a further embodiment of this utility model, a mounting groove is provided at the top of the housing and on one side of the second mounting bracket. A filter plate is installed at the bottom of the mounting groove. An exhaust fan is installed inside the mounting groove and above the filter plate. An exhaust pipe is installed at the top of the mounting groove.

[0015] As a further embodiment of this utility model, a rotating rod is rotatably connected to the top of the U-shaped frame, a baffle is connected to the top of the rotating rod, and a silicone pad is connected to the bottom of the baffle.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This commutator compression molding press, through the coordinated use of the first cylinder, slide rail and other structures, after compression molding is completed, the second cylinder drives the upper mold to move upward, separating the upper mold from the lower mold. At this time, the first cylinder pulls the lower mold back until the lower mold is detached from the housing. At this time, there are no obstructions above the lower mold, and the operating space is extremely large. This can, to a certain extent, avoid damage to the commutator during material handling, and improve the yield rate of the equipment to a certain extent.

[0018] 2. This commutator compression molding press, through the combined use of a high-pressure negative machine, air supply pipe, nozzle and chassis, can scrape off the material adhering to the inner wall of the material tank, thus providing a clean processing environment for the next compression molding operation. At the same time, it can push the commutator on the chassis upwards for easy material removal, and can also air-cool the commutator to improve the working efficiency of the device. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of a commutator compression molding press.

[0020] Figure 2 This is a side view schematic diagram of a commutator compression molding press.

[0021] Figure 3 This is a cross-sectional schematic diagram of a commutator compression molding press.

[0022] Figure 4 In a commutator compression molding press Figure 3 A side view of the structure shown.

[0023] Figure 5 In a commutator compression molding press Figure 4 The diagram shown is a bottom view of the structure.

[0024] Figure 6 In a commutator compression molding press Figure 3 A front view schematic diagram of the structure shown.

[0025] Figure 7 This is a split schematic diagram of the ejection structure in a commutator compression molding press.

[0026] Figure 8 In a commutator compression molding press Figure 6 An enlarged schematic diagram of the structure at point A in the middle.

[0027] In the diagram: 1. Main frame; 2. U-shaped frame; 3. Base frame; 4. First mounting frame; 5. First cylinder; 6. Slide rail; 7. Slider; 8. Lower mold; 9. Material trough; 10. Ejection structure; 11. Housing; 12. Second mounting frame; 13. Second cylinder; 14. Upper mold; 15. Mounting groove; 16. Filter plate; 17. Exhaust fan; 18. Exhaust pipe; 19. Bracket; 20. Observation window; 21. Sliding window; 22. Sound insulation cotton; 24. High-pressure blower; 25. Air supply pipe; 26. Nozzle; 27. Exhaust port; 28. Movable chamber; 29. ​​Connecting pipe; 30. Sleeve; 31. Air supply port; 32. Sealing ring; 33. Limiting ring; 34. Sealing groove; 35. Rotating rod; 36. Baffle; 37. Silicone pad;

[0028] 101. Chassis; 102. Storage slot; 103. Through hole; 104. Tray; 105. Connecting rod; 106. Fixing plate; 107. Limiting rod; 108. Mounting rod; 109. Limiting block; 110. Return spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] Please see Figure 1-8 This utility model provides a technical solution for a commutator compression molding press: it includes a main frame 1, a U-shaped frame 2 fixedly installed at the top of the main frame 1, a base frame 3 fixedly connected at the bottom of the U-shaped frame 2 and located between the two main frames 1, a first mounting frame 4 installed on the side of the U-shaped frame 2 opposite to the main frame 1, a first cylinder 5 installed on the front of the first mounting frame 4, a slide rail 6 installed on the side of the two main frames 1 close to each other, a slider 7 slidably connected inside the slide rail 6, a lower mold 8 connected between the two sliders 7, and the output end of the first cylinder 5 connected to the side wall of the lower mold 8. The lower mold 8 can be driven to move axially through the first cylinder 5, and a material groove 9 is opened at the top of the lower mold 8.

[0032] A housing 11 is installed at the top of the main frame 1 and on one side of the U-shaped frame 2. An observation window 20 is provided on the front of the housing 11 to facilitate observation of the equipment operation process. A sliding window 21 is provided on the side of the housing 11 near the lower mold 8 to facilitate the passage of the lower mold 8. A second mounting bracket 12 is installed at the top of the housing 11. A second cylinder 13 is installed on the front of the second mounting bracket 12. An upper mold 14 is connected to the bottom of the second cylinder 13 and inside the housing 11. A bracket 19 for improving the overall strength of the main frame 1 is installed at the bottom of the main frame 1 and below the housing 11.

[0033] A movable chamber 28 is provided at the bottom of the lower mold 8 and below the material groove 9. An ejection structure 10 is installed inside the movable chamber 28 to facilitate the removal of the compressed material.

[0034] The ejection structure 10 includes a chassis 101 movably connected inside the material trough 9. The top of the chassis 101 is provided with a storage groove 102. The bottom of the chassis 101 and below the storage groove 102 is provided with a through hole 103. A connecting rod 105 is movably connected inside the through hole 103. The top of the connecting rod 105 is connected with a tray 104. The bottom of the connecting rod 105 is connected with a fixed plate 106. A return spring 110 is sleeved on the outside of the connecting rod 105 and between the chassis 101 and the fixed plate 106.

[0035] A limiting rod 107 is movably connected inside the fixed plate 106. The top end of the limiting rod 107 is fixedly connected to the bottom end of the chassis 101. A limiting block 109 is fixedly connected to the bottom end of the limiting rod 107. An installation rod 108 is sleeved on the outside of the limiting rod 107 and located below the fixed plate 106. The end of the installation rod 108 is fixed to the inner wall of the movable chamber 28.

[0036] An air supply pipe 25 is installed inside the base frame 3. A high-pressure blower 24 is connected to the tail end of the air supply pipe 25, and a nozzle 26 is connected to the head end of the air supply pipe 25. An exhaust hole 27 is opened at the top of the nozzle 26.

[0037] A connecting pipe 29 is installed at the bottom of the lower mold 8 and below the movable chamber 28. A sleeve 30 is fixedly connected to the bottom of the connecting pipe 29, and an air outlet 31 is opened at the top of the sleeve 30 and below the connecting pipe 29.

[0038] A sealing ring 32 is installed at one end of the sleeve 30 near the nozzle 26, and a limiting ring 33 is fitted on the outside of the nozzle 26. A sealing groove 34 is opened at one end of the limiting ring 33 near the sleeve 30.

[0039] A mounting groove 15 is provided at the top of the housing 11 and on one side of the second mounting bracket 12. A filter plate 16 is installed at the bottom of the mounting groove 15. An exhaust fan 17 is installed inside the mounting groove 15 and above the filter plate 16. An exhaust pipe 18 is installed at the top of the mounting groove 15. Sound insulation cotton 22 is covered on the outside of the housing 11.

[0040] Specifically, the housing 11 serves as an isolation layer, separating the molding process of the equipment from the workers and reducing the chances of workers inhaling harmful gases. The exhaust fan 17 can extract the air containing metal and plastic particles generated during equipment operation from the housing 11 and discharge it through the exhaust pipe 18, further reducing the harm to workers and equipment. The filter plate 16 can perform preliminary filtration of the gas extracted by the exhaust fan 17 to reduce the amount of particulate matter adhering to the inner wall of the exhaust pipe 18, thereby reducing the frequency of cleaning the exhaust pipe 18. When cleaning is required, the filter plate 16 can be replaced, making it convenient to use.

[0041] The sound insulation cotton 22 can reduce the transmission of equipment noise inside the housing 11, thereby providing a good working environment for workers around the equipment.

[0042] The top of the U-shaped frame 2 is rotatably connected to a rotating rod 35, the top of the rotating rod 35 is connected to a baffle 36, and the bottom of the baffle 36 is connected to a silicone pad 37.

[0043] The working principle of this utility model is as follows:

[0044] After the material is fed into the trough 9, the lower mold 8 is pushed by the first cylinder 5. The lower mold 8 moves axially between the two slide rails 6 via the slider 7. When the lower mold 8 moves to be perpendicular to the upper mold 14, the first cylinder 5 stops working. Then the second cylinder 13 drives the upper mold 14 to press down to complete the compression molding of the material. After compression molding is completed, the second cylinder 13 drives the upper mold 14 to move up, so that the upper mold 14 separates from the lower mold 8. At this time, the first cylinder 5 pulls the lower mold 8 back until the lower mold 8 is removed from the housing 11. At this time, there are no obstructions above the lower mold 8, and the operating space is extremely large, which can avoid damage to the commutator during material handling to a certain extent.

[0045] When the first cylinder 5 pulls the lower mold 8 back until the material trough 9 is perpendicular to the silicone pad 37, the nozzle 26 and the sleeve 30 are connected. At this time, the high-pressure blower 24 starts and inputs gas into the nozzle 26 through the air supply pipe 25. Then the gas in the nozzle 26 enters the movable chamber 28 through the exhaust port 27 and the air supply port 31, and pushes the chassis 101 upward from the bottom. At this time, the chassis 101 can push the commutator above it to complete the material picking work. During the process of rising, the chassis 101 can scrape off the material attached to the inner wall of the material trough 9, thus providing a clean processing environment for the next compression molding work. It is relatively convenient to use.

[0046] When the chassis 101 rises, it will drive the limit rod 107 to rise synchronously. When the limit block 109 fixedly connected to the bottom of the limit rod 107 comes into contact with the mounting rod 108, the chassis 101 rises to the highest position. At this time, the airflow can no longer push the chassis 101 upward. Under the influence of air pressure, the airflow will enter the top of the chassis 101 through the through hole 103 and push the tray 104 upward. At this time, the commutator is lifted by the tray 104 and cooled by the airflow, thereby improving the working efficiency of the equipment.

[0047] When the airflow stops, the return spring 110 will rebound on the fixed plate 106 with the chassis 101 as the support point, and then automatically reset the tray 104 so that the tray 104 is stored in the storage groove 102 to avoid affecting the compression molding of the material.

[0048] The baffle 36 can limit the commutator supported by the tray 104 to prevent the material from being ejected and can control the cooling time of the material, making it more flexible to use. The silicone pad 37 can prevent the commutator from being damaged when it comes into contact with the baffle 36. When it is necessary to remove the material, the worker first clamps the commutator located above the tray 104, then turns off the high-pressure blower 24 and rotates the rotating rod 35 at the same time. At this time, the commutator can be removed, which is more convenient to operate.

[0049] When the nozzle 26 and the sleeve 30 are connected, the sealing ring 32 is engaged in the sealing groove 34 to seal the interface between the nozzle 26 and the sleeve 30 to prevent gas leakage.

[0050] 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 commutator compression molding press, comprising a main frame (1), characterized in that: A U-shaped frame (2) is fixedly installed at the top of the main frame (1). A base frame (3) is fixedly connected at the bottom of the U-shaped frame (2) and between the two main frames (1). A first mounting frame (4) is installed on the side of the U-shaped frame (2) opposite to the main frame (1). A first cylinder (5) is installed on the front of the first mounting frame (4). A slide rail (6) is installed on the side of the two main frames (1) that are close to each other. A slider (7) is slidably connected inside the slide rail (6). A lower mold (8) is connected between the two sliders (7). A material groove (9) is opened at the top of the lower mold (8).

2. A press for transfer molding commutators as defined in claim 1, wherein: A housing (11) is installed at the top of the main frame (1) and on one side of the U-shaped frame (2). A second mounting bracket (12) is installed at the top of the housing (11). A second cylinder (13) is installed on the front of the second mounting bracket (12). An upper mold (14) is connected to the bottom of the second cylinder (13) and inside the housing (11).

3. The commutator compression molding press according to claim 1, characterized in that: A movable chamber (28) is provided at the bottom end of the lower mold (8) and below the material groove (9), and an ejection structure (10) is installed inside the movable chamber (28). The ejection structure (10) includes a chassis (101) movably connected inside the material trough (9). The top of the chassis (101) is provided with a storage groove (102). The bottom of the chassis (101) and located below the storage groove (102) is provided with a through hole (103). A connecting rod (105) is movably connected inside the through hole (103). The top of the connecting rod (105) is connected with a tray (104), and the bottom of the connecting rod (105) is connected with a fixing plate (106).

4. A commutator compression molding press according to claim 1, characterized in that: An air supply pipe (25) is installed inside the base frame (3). A high-pressure blower (24) is connected to the tail end of the air supply pipe (25), and a nozzle (26) is connected to the head end of the air supply pipe (25). A connecting pipe (29) is installed at the bottom end of the lower mold (8) and below the movable chamber (28), and a sleeve (30) is fixedly connected to the bottom end of the connecting pipe (29).

5. A press for transfer molding commutators as defined in claim 2 wherein: An installation groove (15) is provided at the top of the housing (11) and on one side of the second mounting bracket (12). A filter plate (16) is installed at the bottom of the installation groove (15). An exhaust fan (17) is installed inside the installation groove (15) and above the filter plate (16). An exhaust pipe (18) is installed at the top of the installation groove (15).

6. A press for transfer molding commutators as defined in claim 1 wherein: The top of the U-shaped frame (2) is rotatably connected to a rotating rod (35), the top of the rotating rod (35) is connected to a baffle (36), and the bottom of the baffle (36) is connected to a silicone pad (37).

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