Edge grinding device for molded case circuit breaker

Abstract

The utility model belongs to the technical field of mold manufacturing, and particularly relates to a molded case circuit breaker edge grinding device which comprises a dry ice burr removing machine and a molded case workpiece which are fixedly assembled below a first supporting plate, and one side of the first supporting plate is fixedly connected with a side plate. Second supporting plates are symmetrically and fixedly connected to one side of the side plate and the top of the first supporting plate, rotating rods are rotationally connected between the side plate and the second supporting plates, and first belt wheels are fixedly connected to the outer walls of the rotating rods. The conveying belt and the multi-wedge belts are synchronously controlled to rotate through the rotating disc, plastic shell workpieces are conveyed to the position between the two multi-wedge belts in batches, burrs of the plastic shell workpieces are taken out through dry ice sprayed out of the flat nozzles, hands do not need to make contact with the dry ice, hand frostbite and chapping are avoided, the workpieces do not need to be turned over one by one, the fatigue feeling of machining personnel is reduced, and the machining efficiency is improved. And the edge grinding efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of mold manufacturing technology, specifically relating to a grinding device for plastic-cased circuit breakers. Background Technology

[0002] Molded case circuit breakers, also known as molded case circuit breakers or plastic-encased circuit breakers, are electrical protection devices widely used in low-voltage power distribution systems for circuit protection. During the injection molding process of molded case circuit breakers, burrs may form on the edges of the molded case due to factors such as material moisture content, injection pressure, holding time, and mold wear. A common method to remove burrs is to utilize the sublimation properties of solid carbon dioxide (dry ice). By spraying compressed air or gas through a nozzle to propel dry ice particles, they impact the burr surface at high speed. Due to the temperature difference, the dry ice rapidly sublimates into gaseous carbon dioxide, generating high-pressure gas, thereby achieving physical impact and removing the burrs.

[0003] In the existing technology, when using dry ice to grind and deburr molded case circuit breakers, it is necessary to manually adjust the angle between the nozzle and the workpiece to ensure that the burrs on both sides of the workpiece can be removed by the dry ice. However, the dry ice sprayed from the nozzle is extremely cold, and prolonged spraying on the hands may cause frostbite, chapped skin or other discomfort. Continuously turning the workpiece over and over can also easily cause fatigue, resulting in low grinding efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a grinding device for molded case circuit breakers. By synchronously controlling the rotation of the conveyor belt and multi-wedge belt through a turntable, the molded case workpieces are transported in batches between two multi-wedge belts. The burrs on the molded case workpieces are removed by dry ice sprayed from a flat nozzle. This eliminates the need for hands to come into contact with the dry ice, thus avoiding frostbite and chapped hands, and also eliminates the need to flip the workpieces one by one, reducing the fatigue of the processing personnel and greatly improving the grinding efficiency.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A grinding device for a molded case circuit breaker includes a dry ice deburring machine fixedly assembled below a support plate, and a molded case workpiece. A side plate is fixedly connected to one side of the support plate. Support plates are symmetrically fixedly connected to one side of the side plate and the top of the support plate. Rotating rods are rotatably connected between the side plate and the support plates. Pulleys are fixedly connected to the outer walls of the rotating rods. Two pulleys are connected by a multi-wedge belt drive between the two pulleys located on the same horizontal plane. Pulleys are fixedly connected to the outer walls of two vertically aligned rotating rods. The two pulleys are connected by a belt drive. The multi-wedge belt is an annular belt structure. A gap for clamping the molded case workpiece is provided between the two multi-wedge belts, and the width of the multi-wedge belt is smaller than the width of the molded case workpiece. An air pipe is fixedly assembled to the top of the support plate and one side of the side plate. A flat nozzle is fixedly assembled to one end of the air pipe and on both sides of the multi-wedge belt. The other end of the air pipe is fixedly connected to the dry ice deburring machine.

[0007] A transparent baffle is fixedly assembled on one side of several of the support plates.

[0008] Gears are fixedly connected to the outer walls of the two rotating rods near the support plate, and a turntable is fixedly connected to one end of one of the rotating rods.

[0009] Both ends of the support plate are symmetrically fixed with guard plates, and a drive shaft is rotatably assembled between the two guard plates located at the same end.

[0010] One of the drive shafts is fixedly connected to a second gear at one end, located on the outside of the guard plate, and the second gear meshes with the first gear.

[0011] A conveyor belt is driven between the two drive shafts, and the top of the guard plate protrudes from the conveyor belt.

[0012] A guide plate is symmetrically fixedly connected between the two guard plates located at the same end, and an inclined guide plate is fixedly connected to the end of each guide plate away from the rotating rod.

[0013] The guide plate and the inclined guide plate are both fixedly installed above the conveyor belt.

[0014] The technical advantages achieved by this utility model are as follows: By synchronously controlling the rotation of the conveyor belt and multi-wedge belt through the turntable, plastic shell workpieces are transported in batches between two multi-wedge belts, and the burrs of the plastic shell workpieces are removed by dry ice sprayed from the flat nozzle. This eliminates the need for hands to come into contact with dry ice, avoiding frostbite and chapped hands, and also eliminates the need to flip the workpieces one by one, reducing the fatigue of the processing personnel and greatly improving the edge grinding efficiency. Attached Figure Description

[0015] Figure 1This is an overall view of the edge grinding device provided in the embodiment of this utility model;

[0016] Figure 2 This is a structural side view of the edge grinding device provided in an embodiment of this utility model;

[0017] Figure 3 This is an exploded view of the edge grinding device provided in an embodiment of this utility model;

[0018] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0019] Figure 5 yes Figure 3 A magnified view of a section at point B in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Support plate one; 101. Dry ice deburring machine; 102. Side plate; 103. Support plate two; 104. Rotating rod; 105. Belt pulley one; 106. Multi-ribbed belt; 107. Gear one; 108. Belt pulley two; 109. Belt; 110. Turntable; 111. Air pipe; 112. Flat nozzle; 113. Transparent baffle; 114. Protective plate; 115. Drive shaft; 116. Conveyor belt; 117. Gear two; 118. Guide plate; 119. Inclined guide plate; 120. Plastic shell workpiece. Detailed Implementation

[0022] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] like Figures 1-5As shown, a molding compound circuit breaker edge grinding device includes a dry ice deburring machine 101 fixedly assembled below a support plate 1, and a molding compound workpiece 120. Protective plates 114 are symmetrically fixedly assembled at both ends of the support plate 1. A drive shaft 115 is rotatably assembled between the two protective plates 114 at the same end. A gear 117 is fixedly connected to one end of one of the drive shafts 115, located outside the protective plate 114. A conveyor belt 116 is drively connected between the two drive shafts 115. The top of the protective plate 114 protrudes from the conveyor belt 116. A guide plate 118 is symmetrically fixedly connected between the two protective plates 114 at the same end. An inclined guide plate 119 is fixedly connected to the end away from the rotating rod 104. The guide plate 118 and the inclined guide plate 119 are both fixedly set above the conveyor belt 116. A side plate 102 is fixedly connected to one side of the support plate 1. A second support plate 103 is symmetrically fixedly connected to one side of the side plate 102 and the top of the support plate 1. A rotating rod 104 is rotatably connected between the side plate 102 and the second support plate 103. A gear 107 is fixedly connected to the outer wall of the two rotating rods 104 near the support plate 1. A turntable 110 is fixedly connected to one end of one of the rotating rods 104. The second gear 117 meshes with the gear 107.

[0024] According to the above structure, in the prior art, the plastic shell workpiece 120 is mostly set as a cuboid. The burrs and rough edges are located at the edges of the plastic shell workpiece 120 and the edges of its holes and grooves. Therefore, the plastic shell workpieces 120 are arranged in sequence on a conveyor belt 116, so that the narrower side of the plastic shell workpiece 120 contacts the conveyor belt 116. The turntable 110 is rotated, and the turntable 110 drives the rotating rod 104 to rotate. The second support plate 103 provides support for the rotating rod 104. The rotating rod 104 drives the first gear 107 to rotate, the first gear 107 drives the second gear 117 to rotate, and the second gear 117 drives the transmission shaft 115 and the conveyor belt 116 to rotate, thereby moving the plastic shell workpiece 120. The plastic shell workpiece 120 enters the guide plate 118 through the inclined guide plate 119 for position correction. The two conveyor belts 116 located at both ends of the support plate 116 are used for feeding and discharging, respectively.

[0025] See attached document Figure 1 , Figures 3-4A transparent baffle 113 is fixedly assembled on one side of several support plates 103. Pulleys 105 are fixedly connected to the outer wall of the rotating rod 104. Two pulleys 105 located on the same horizontal plane are connected by a multi-wedge belt 106. Pulleys 108 are fixedly connected to the outer wall of two vertically aligned rotating rods 104. The two pulleys 108 are connected by a belt 109. The multi-wedge belt 106 is set as an annular belt structure. A gap for clamping the plastic shell workpiece 120 is provided between the two multi-wedge belts 106. The width of the multi-wedge belt 106 is smaller than the width of the plastic shell workpiece 120. The top of the support plate 11 and one side of the side plate 102 are fixedly assembled to the air pipe 111. Flat nozzles 112 are fixedly assembled at one end of the air pipe 111 and on both sides of the multi-wedge belt 106. The other end of the air pipe 111 is fixedly connected to the dry ice deburring machine 101.

[0026] According to the above structure, when the turntable 110 controls the rotation of the rotating rod 104, the rotating rod 104 will also drive the pulley 105 to rotate, and the pulley 105 will drive the multi-ribbed belt 106 to rotate. On the other hand, when the rotating rod 104 rotates, it will synchronously drive the pulley 108 to rotate, and the pulley 108 will drive the belt 109 to rotate. This allows the two rotating rods 104, which are aligned in the vertical direction, to rotate synchronously. Therefore, the two multi-ribbed belts 106 will also rotate together with the rotating rods 104, and the plastic shell workpiece 120 will enter the guide. After the plate 118 is positioned, it is then pushed by the conveyor belt 116 into the gap between the two multi-wedge belts 106. The multi-wedge belts 106 clamp and transport the plastic shell workpiece 120. The width of the multi-wedge belts 106 is smaller than the narrow side of the plastic shell workpiece 120, so they will not clamp the burrs or rough edges of the plastic shell workpiece 120. The dry ice deburring machine 101 sprays dry ice through the air pipe 111 and the flat nozzle 112 to remove burrs from the plastic shell workpiece 120 located between the two multi-wedge belts 106. The transparent baffle 113 allows observation. Observing the burr removal process also prevents dry ice from splashing onto people. After a plastic shell workpiece 120 is sprayed by the flat nozzle 112 for a certain period of time, the turntable 110 continues to rotate, causing the multi-wedge belt 106 to rotate and carry the next plastic shell workpiece 120 to one side of the flat nozzle 112 for burr removal. After the burrs are removed, the plastic shell workpiece 120 is conveyed to the conveyor belt 116 for discharge at the other end of the support plate 11 as the multi-wedge belt 106 continues to rotate. The characteristics of the multi-wedge belt 106 enable it to bear a certain range of loads. Under high tension, a high degree of tautness is achieved to maintain the clamping degree of the plastic shell workpiece 120. This utility model synchronously controls the rotation of the conveyor belt 116 and the multi-wedge belt 106 through the turntable 110, and transports the plastic shell workpieces 120 in batches between the two multi-wedge belts 106. The burrs of the plastic shell workpieces 120 are removed by dry ice sprayed by the flat nozzle 112. This eliminates the need for hands to come into contact with dry ice, avoiding frostbite and chapped hands, and also eliminates the need to flip the workpieces one by one, reducing the fatigue of the processing personnel and greatly improving the edge grinding efficiency.

[0027] The working principle of this utility model is as follows: In the prior art, the plastic shell workpiece 120 is mostly set as a cuboid, and the burrs and rough edges are located at the edges of the plastic shell workpiece 120 and the edges of its holes and grooves. Therefore, the plastic shell workpieces 120 are arranged sequentially on a conveyor belt 116, so that the narrower side of the plastic shell workpiece 120 contacts the conveyor belt 116. The turntable 110 is rotated, and the turntable 110 drives the rotating rod 104 to rotate. The second support plate 103 provides support for the rotating rod 104. The rotating rod 104 drives the first gear 107 to rotate, the first gear 107 drives the second gear 117 to rotate, and the second gear 117 drives the transmission shaft 115 and the conveyor belt. The rotation of 116 causes the plastic shell workpiece 120 to move. The plastic shell workpiece 120 enters the guide plate 118 through the inclined guide plate 119 for position correction. The two conveyor belts 116 located at both ends of the support plate 11 are used for feeding and discharging, respectively. When the turntable 110 controls the rotation of the rotating rod 104, the rotating rod 104 also drives the pulley 105 to rotate. The pulley 105 drives the multi-wedge belt 106 to rotate. On the other hand, the rotation of the rotating rod 104 synchronously drives the pulley 108 to rotate. The pulley 108 drives the belt 109 to rotate, so that the two rotating rods located in the vertical direction can be aligned. 104 rotates synchronously, so the two multi-wedge belts 106 also rotate together with the rotating rod 104. After the plastic shell workpiece 120 enters the correction position of the guide plate 118, it is then pushed by the conveyor belt 116 into the gap between the two multi-wedge belts 106. The multi-wedge belts 106 clamp and transport the plastic shell workpiece 120. The width of the multi-wedge belts 106 is smaller than the narrow side of the plastic shell workpiece 120, so it will not clamp the burrs and rough edges of the plastic shell workpiece 120. The dry ice deburring machine 101 sprays dry ice through the air pipe 111 and the flat nozzle 112 to remove burrs from the plastic shell workpiece 120 located between the two multi-wedge belts 106. Transparent baffle 1 13 allows for observation of burr removal and also prevents dry ice from splashing onto people. After a plastic shell workpiece 120 is sprayed by the flat nozzle 112 for a certain period of time, the turntable 110 continues to rotate, causing the multi-wedge belt 106 to rotate and drive the next plastic shell workpiece 120 to the side of the flat nozzle 112 for burr removal. After the burrs are removed, the plastic shell workpiece 120 is conveyed to the conveyor belt 116 for discharge at the other end of the support plate 1 as the multi-wedge belt 106 continues to rotate. The characteristics of the multi-wedge belt 106 enable it to withstand greater tension within a certain range and achieve a higher degree of tension to maintain the clamping degree of the plastic shell workpiece 120.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A moulded case circuit breaker edge grinding device comprising a dry ice deburring machine (101) fixedly assembled under a support plate (1) and a moulded case workpiece (120), characterized in that: One side of the support plate (1) is fixedly connected with a side plate (102), one side of the side plate (102) and the top of the support plate (1) are symmetrically fixedly connected with a support plate (103), the side plate (102) and the support plate (103) are rotatably connected with a rotating rod (104), the outer wall of the rotating rod (104) is fixedly connected with a belt pulley (105), two belt pulleys (105) located in the same horizontal plane are drivingly connected through a multi-belt (106), the outer wall of the rotating rod (104) is fixedly connected with a belt pulley (108), two belt pulleys (108) are drivingly connected through a belt (109), the multi-belt (106) is arranged in an annular belt structure, a gap for clamping a plastic shell workpiece (120) is arranged between the two multi-belts (106), and the width of the multi-belt (106) is less than the width of the plastic shell workpiece (120), the top of the support plate (1) and one side of the side plate (102) are fixedly assembled on an air pipe (111), a flat nozzle (112) is fixedly assembled on one end of the air pipe (111) and located on both sides of the multi-belt (106), and the other end of the air pipe (111) is fixedly connected with the dry ice burr removing machine (101).

2. A molded case circuit breaker edging device according to claim 1, wherein: The side of the support plate (103) is fixedly assembled with a transparent baffle (113).

3. A molding device for molded case circuit breakers as defined in claim 1, wherein: The outer wall of the rotating rod (104) close to the support plate (1) is fixedly connected with a gear (107), and one end of the rotating rod (104) is fixedly connected with a rotating disc (110).

4. A molded case circuit breaker edging device as defined in claim 3 wherein: Both ends of the support plate (1) are symmetrically fixedly assembled with a guard plate (114), and the two guard plates (114) located in the same end are rotatably assembled with a transmission shaft (115).

5. A molded case circuit breaker edging device as defined in claim 4 wherein: One end of the transmission shaft (115) and located outside the guard plate (114) is fixedly connected with a gear (117), and the gear (117) is meshingly connected with the gear (107).

6. A molding device for molded case circuit breakers as defined in claim 4, wherein: The transmission shaft (115) is drivingly connected with a conveyor belt (116), and the top of the guard plate (114) protrudes from the conveyor belt (116).

7. A molded case circuit breaker edging device as defined in claim 6 wherein: The two guard plates (114) located in the same end are symmetrically fixedly connected with a guide plate (118), and one end of the guide plate (118) away from the rotating rod (104) is fixedly connected with an inclined guide plate (119).

8. A molded case circuit breaker edging device as defined in claim 7 wherein: The guide plate (118) and the inclined guide plate (119) are fixedly arranged above the conveyor belt (116).

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