Crankshaft dynamic balance structure of press machine

Abstract

The utility model discloses a crankshaft dynamic balance structure of a press machine, which relates to the technical field of press machines, and comprises a support block, and the outer wall of the support block is fixedly connected with a motor. When the stable block moves, the connecting rod rotates around the positioning block and pushes the sliding block to slide along the sliding groove, and when the connecting rod rotates, the connecting rod pushes the multiple supporting rods in the connecting rod to move and enables the supporting rods to rotate around the fixed block, and meanwhile the other end of the connecting rod slides along the limiting groove. The supporting rods pull the damper between the two supporting rods to deform the damper, the damper is arranged to automatically pull the spring on the outer side of the damper when being subjected to pulling force, the purpose that the damper and the spring are pulled through rotation of the supporting rods, pressure generated when the crankshaft rotates is relieved through elasticity of the damper and the spring is achieved, and the phenomenon that when the press machine works, the crankshaft is damaged is avoided. And the crankshaft can bear huge alternating load, so that the crankshaft is overloaded due to overlarge instantaneous force, and the problems of fatigue fracture and the like of the crankshaft are caused.

Description

Technical Field

[0001] This utility model belongs to the field of press technology, and in particular relates to the dynamic balancing structure of the crankshaft of a press. Background Technology

[0002] According to the published patent CN201665007U, the high-speed press's dynamic balancing mechanism includes a dynamic balancing block, a balancing connecting rod, a pin, and a guide column. The balancing connecting rod is movably connected to the eccentric section of the dynamic balancing mechanism on the crankshaft. The dynamic balancing block has a pin hole, and the dynamic balancing block is connected to the balancing connecting rod via the pin hole and the pin. The dynamic balancing block also has a guide hole perpendicular to the pin hole. The guide column is fixedly connected to the machine body, and the guide hole on the dynamic balancing block is slidably connected to the guide column. The dynamic balancing block has a pin hole, and the dynamic balancing block is connected to the balancing connecting rod via the pin hole and the pin. The dynamic balancing block also has a guide hole perpendicular to the pin hole. The guide column is fixedly connected to the machine body, and the guide hole on the dynamic balancing block is slidably connected to the guide column. This reduces vibration during high-speed sliding of the slider, but the following shortcomings remain:

[0003] After the above equipment is completed, it simply performs dynamic balancing of the crankshaft using a balance block. However, because the crankshaft is subjected to huge alternating loads when the press is working, the crankshaft is overloaded due to excessive instantaneous force, which leads to problems such as fatigue fracture. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic balancing structure for the crankshaft of a press. Through a damping mechanism and a lubrication mechanism, it solves the problem that the crankshaft is overloaded due to excessive instantaneous force caused by the huge alternating load that occurs when the press is working, leading to fatigue fracture.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a dynamic balancing structure for the crankshaft of a press, including a support block. A motor is fixedly connected to the outer wall of the support block. The output end of the motor is fixedly connected to the crankshaft via a coupling. A push rod is rotatably connected to the outer wall of the crankshaft. A pressure block is rotatably connected to the outer wall of the push rod on the side away from the crankshaft. A limit block is slidably connected to the outer wall of the pressure block.

[0007] The outer wall of the crankshaft is provided with a damping mechanism, which includes a stabilizing block. The outer wall of the stabilizing block is fixedly connected to the outer wall of the crankshaft. Several positioning blocks are fixedly connected to the outer wall of the stabilizing block. Connecting rods are rotatably connected to the outer walls of the positioning blocks. A slider is rotatably connected to the outer wall of the connecting rod away from the positioning block. Several connecting rings are rotatably connected to the inner wall of the support block. The inner walls of the connecting rings are provided with sliding grooves.

[0008] Furthermore, the inner wall of the slide groove is slidably connected to the outer wall of the slider, the inner wall of the connecting rod is provided with a limiting groove, the inner wall of the limiting groove is slidably connected with a plurality of support rods, the outer wall of the ends of the plurality of support rods away from the connecting rod is rotatably connected with a fixing block, the outer wall of the fixing block is fixedly connected to the outer wall of the connecting ring, the outer wall of the support rod is fixedly connected with a damper, the outer wall of the damper is fixedly connected with a spring, and the outer wall of the support block is provided with a lubrication mechanism.

[0009] Furthermore, the lubrication mechanism includes a pulley, the outer wall of which is fixedly connected to the outer wall of the crankshaft, and a belt is drivenly connected to the inner wall of the pulley.

[0010] Furthermore, a second pulley is connected to the outer wall of the end of the belt away from the pulley, the outer wall of the second pulley is rotatably connected to the outer wall of the support block, and a positioning shaft is fixedly connected to the outer wall of the second pulley.

[0011] Furthermore, a plurality of bevel gears are fixedly connected to the outer wall of the positioning shaft, and a second bevel gear meshes with the outer wall of the plurality of bevel gears, the outer wall of the second bevel gear being rotatably connected to the outer wall of the storage box.

[0012] Furthermore, the outer wall of the storage box is fixedly connected to the outer wall of the support block, and a stirring block is fixedly connected to the outer wall of the second bevel gear near the storage box. The outer wall of the stirring block is rotatably connected to the inner wall of the storage box.

[0013] Furthermore, a number of water pumps are fixedly connected to the outer wall of the storage box, and water pipes are fixedly connected to the output ends of the water pumps. The outer wall of the water pipes is fixedly connected to the inner wall of the support block.

[0014] Furthermore, a positioning rod is fixedly connected to the inner wall of the water pipe on the side away from the water pump, a baffle plate is rotatably connected to the outer wall of the positioning rod, a barrier plate is fixedly connected to the outer wall of the positioning rod on the side away from the baffle plate, and several guide grooves are opened on the inner wall of the support block.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a connecting ring and a damper. When the stable block moves, the connecting rod rotates around the positioning block and pushes the slider to slide along the groove. As the connecting rod rotates, it pushes multiple support rods inside to move, and the support rods rotate around the fixed block while their other ends slide along the limiting groove. The support rods pull the damper between the two support rods, causing it to deform. The damper is designed to automatically pull its outer spring when subjected to tension. This achieves the effect of using the rotation of the support rod to pull the damper and spring, utilizing their elasticity to relieve the pressure on the crankshaft during rotation. This prevents the crankshaft from being overloaded due to excessive instantaneous force caused by the huge alternating load during press operation, thus preventing fatigue fracture and other problems.

[0017] 2. This utility model incorporates water pumps and water pipes. Activating two water pumps draws liquid from both ends of the storage tank and sprays it through the water pipes onto the connection between the connecting ring and the support block. The liquid is then poured into the connection between the crankshaft and the support block through a guide channel. This ensures that an oil film forms on the surface of the crankshaft and the connecting ring, reducing friction. The system effectively draws the liquid out through the water pumps and discharges it via the water pipes and guide channels, preventing issues such as uneven weight distribution on both ends of the crankshaft due to friction between the crankshaft and the device, which could lead to unexpected shaking during prolonged use.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the shock absorption structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the lubrication structure of this utility model;

[0024] Figure 5 This utility model Figure 4 Enlarged view of section B in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Support block; 101. Motor; 102. Crankshaft; 103. Push rod; 104. Pressure block; 105. Limiting block; 2. Shock absorption mechanism; 201. Stable block; 202. Positioning block; 203. Connecting rod; 204. Slider; 205. Connecting ring; 206. Slide groove; 207. Limiting groove; 208. Support rod; 209. Fixing block; 210. Spring; 211. Damper; 3. Lubrication mechanism; 301. Pulley; 302. Belt; 303. Second pulley; 304. Positioning shaft; 305. Bevel gear; 306. Second bevel gear; 307. Stirring block; 308. Storage tank; 309. Water pump; 310. Water pipe; 311. Positioning rod; 312. Barrier plate; 313. Water baffle plate; 314. Guide channel. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 As shown, this utility model is a dynamic balancing structure for the crankshaft of a press, including a support block 1. A motor 101 is fixedly connected to the outer wall of the support block 1. The motor 101 is started, and the output end of the motor 101 is fixedly connected to a crankshaft 102 through a coupling. A push rod 103 is rotatably connected to the outer wall of the crankshaft 102. The motor 101 drives the crankshaft 102 to rotate and pushes the push rod 103 to move. Since the push rod 103 is located at the bend of the crankshaft 102, the range of movement of the push rod 103 is greater than that of the crankshaft 102. A pressure block 104 is rotatably connected to the outer wall of the push rod 103 away from the crankshaft 102. A limit block 105 is slidably connected to the outer wall of the pressure block 104. The pressure block 104 is restricted by the limit block 105 while the push rod 103 moves and pushes the pressure block 104 to move.

[0029] The outer wall of the crankshaft 102 is provided with a damping mechanism 2, which includes a stabilizing block 201. The outer wall of the stabilizing block 201 is fixedly connected to the outer wall of the crankshaft 102. The rotation of the crankshaft 102 is stabilized by subsequently placing the stabilizing block 201 at both ends of the crankshaft 102. Several positioning blocks 202 are fixedly connected to the outer wall of the stabilizing block 201. Connecting rods 203 are rotatably connected to the outer walls of the several positioning blocks 202. The movement of the stabilizing block 201 pushes the connecting rods 203 to move.

[0030] A slider 204 is rotatably connected to the outer wall of the end of the connecting rod 203 away from the positioning block 202. Several connecting rings 205 are rotatably connected to the inner wall of the support block 1. The inner wall of the several connecting rings 205 is provided with a sliding groove 206. The inner wall of the sliding groove 206 is slidably connected to the outer wall of the slider 204. Since one end of the connecting rod 203 is connected to the connecting ring 205 through the slider 204, the connecting ring 205 is used to increase the overall connectivity of the structure. A limiting groove 207 is provided on the inner wall of the connecting rod 203. Several support rods 208 are slidably connected to the inner wall of the limiting groove 207. A fixing block 209 is rotatably connected to the outer wall of the end of the several support rods 208 away from the connecting rod 203. When the connecting rod 203 rotates, it will push the support rod 208 to move along the limiting groove 207 while the other end rotates around the fixing block 209.

[0031] The outer wall of the fixed block 209 is fixedly connected to the outer wall of the connecting ring 205. The outer wall of the support rod 208 is fixedly connected to a damper 211. The outer wall of the damper 211 is fixedly connected to a spring 210. The damper 211 is pulled by the rotation of the support rod 208. The damper 211 is set to automatically pull the spring 210 after deformation, so that the elasticity of the spring 210 can relieve the pressure of the support rod 208. The outer wall of the support block 1 is provided with a lubrication mechanism 3.

[0032] The lubrication mechanism 3 includes a pulley 301. The outer wall of the pulley 301 is fixedly connected to the outer wall of the crankshaft 102. The pulley 301 is driven to rotate by the rotation of the push rod 103. The inner wall of the pulley 301 is connected to a belt 302. The outer wall of the belt 302 away from the pulley 301 is connected to a second pulley 303. The belt 302 connects the pulley 301 and the second pulley 303 at the same time. Therefore, when the pulley 301 rotates, the second pulley 303 is driven to rotate by the belt 302. The outer wall of the second pulley 303 is rotatably connected to the outer wall of the support block 1.

[0033] The outer wall of the second pulley 303 is fixedly connected to a positioning shaft 304, and the outer wall of the positioning shaft 304 is fixedly connected to several bevel gears 305. The support block 1 stabilizes the rotation of the second pulley 303 and allows the second pulley 303 to drive the positioning shaft 304 to rotate.

[0034] A number of bevel gears 305 have their outer walls meshing with a second bevel gear 306. The outer wall of the second bevel gear 306 is rotatably connected to the outer wall of the storage tank 308. The outer wall of the storage tank 308 is fixedly connected to the outer wall of the support block 1. A stirring block 307 is fixedly connected to the outer wall of the second bevel gear 306 near the storage tank 308. Through the meshing of the bevel gears 305 and the second bevel gear 306, the bevel gear 305 drives the second bevel gear 306 to rotate, and the second bevel gear 306 drives the stirring block 307 to rotate inside the storage tank 308 to stir the liquid inside the storage tank 308. The outer wall of the stirring block 307 is rotatably connected to the inner wall of the storage tank 308.

[0035] Several water pumps 309 are fixedly connected to the outer wall of the storage tank 308. The water pumps 309 spray the liquid in the storage tank 308 evenly. The output ends of the several water pumps 309 are fixedly connected to water pipes 310. The outer wall of the water pipes 310 is fixedly connected to the inner wall of the support block 1. A positioning rod 311 is fixedly connected to the inner wall of the water pipes 310 away from the water pumps 309. A baffle plate 313 is rotatably connected to the outer wall of the positioning rod 311. When the liquid passes through the water pipes 310, it will push the baffle plate 313 to rotate around the positioning rod 311. A barrier plate 312 is fixedly connected to the outer wall of the positioning rod 311 away from the baffle plate 313. The barrier plate 312 restricts the rotation range of the positioning rod 311, thereby restricting the flow direction of the liquid. Several guide grooves 314 are opened on the inner wall of the support block 1.

[0036] One specific application of this embodiment is:

[0037] When the staff needs to use the equipment, the starter motor 101 drives the crankshaft 102 to rotate, which in turn moves the push rod 103. Since the push rod 103 is located at the bend of the crankshaft 102, the push rod 103 is far away from the axis of the crankshaft 102, which results in the rotation range of the push rod 103 being greater than that of the crankshaft 102. This allows the push rod 103 to push the pressure block 104 to move while the limiting block 105 restricts the movement direction of the pressure block 104. At both ends of the crankshaft 102, there are equal-sized stabilizing blocks 201, and the positions of these two stabilizing blocks 201 are also set to ensure that the rotation of the crankshaft 102 is not prone to shaking.

[0038] If the crankshaft 102 wobbles, it will push the stabilizer blocks 201 at both ends, causing the stabilizer blocks 201 to move the positioning blocks 202 and simultaneously pushing the connecting rod 203. Since the other end of the connecting rod 203 is connected to the inside of the connecting ring 205 through the slider 204, the connecting rod 203 will rotate around the positioning block 202 when the stabilizer blocks 201 move, causing the connecting rod 203 to push the slider 204 to slide along the slide groove 206. When the connecting rod 203 rotates, it will push the multiple support rods 208 inside it to move. The other end of the rod 208 is restricted by the fixing block 209, which prevents the fixing block 209 from moving. Therefore, while the support rod 208 rotates around the fixing block 209, the other end slides along the limiting groove 207, and the support rod 208 pulls the damper 211 between the two support rods 208 to deform it. The damper 211 is set to automatically pull its outer spring 210 when it is subjected to tension, thereby using the elasticity of the spring 210 to relieve the pressure between the support rod 208 and the connecting rod 203 and reduce the sway amplitude of the crankshaft 102.

[0039] During the rotation of crankshaft 102, pulley 301 will be driven to rotate. Belt 302 connects pulley 301 and second pulley 303. Therefore, when pulley 301 rotates, the second pulley 303 is driven to rotate through the transmission of belt 302. The rotation of the second pulley 303 drives the positioning shaft 304 to rotate, which in turn drives multiple bevel gears 305 to rotate. Since bevel gear 305 meshes with the second bevel gear 306, the rotation of bevel gear 305 will push the second bevel gear 306 to rotate, causing the second bevel gear 306 to drive the stirring block 307 to rotate inside the storage tank 308. Since the stirring block 307 is close to the bottom of the storage tank 308, the rotation of the stirring block 307 can pick up all the sediment at the bottom of the storage tank 308.

[0040] Then, the two water pumps 309 are started to draw liquid through both ends of the storage tank 308 and spray it through the water pipe 310 at the connection between the connecting ring 205 and the support block 1. The liquid is then poured into the connection between the crankshaft 102 and the support block 1 through the guide groove 314, thereby ensuring that an oil film is formed on the surface of the crankshaft 102 and the connecting ring 205 to reduce friction. When the water pipe 310 stops discharging liquid, a siphon may occur, causing the liquid to flow back. When the liquid flows back, it will push the two baffle plates 313 to rotate around the positioning rod 311. Since the positioning rod 311 is connected to the baffle plate 312 on the side near the water pump 309, the baffle plate 312 is used to block the rotation range of the baffle plate 313, so that the baffle plate 313 can block the inner diameter of the water pipe 310 and thus prevent the liquid from flowing.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A dynamic balancing structure for the crankshaft of a press, comprising a support block (1), characterized in that: A motor (101) is fixedly connected to the outer wall of the support block (1). The output end of the motor (101) is fixedly connected to a crankshaft (102) via a coupling. A push rod (103) is rotatably connected to the outer wall of the crankshaft (102). A pressure block (104) is rotatably connected to the outer wall of the push rod (103) away from the crankshaft (102). A limit block (105) is slidably connected to the outer wall of the pressure block (104). The outer wall of the crankshaft (102) is provided with a damping mechanism (2). The damping mechanism (2) includes a stabilizing block (201). The outer wall of the stabilizing block (201) is fixedly connected to the outer wall of the crankshaft (102). The outer wall of the stabilizing block (201) is fixedly connected with a plurality of positioning blocks (202). The outer walls of the plurality of positioning blocks (202) are rotatably connected with connecting rods (203). The outer wall of the connecting rod (203) away from the positioning blocks (202) is rotatably connected with a slider (204). The inner wall of the support block (1) is rotatably connected with a plurality of connecting rings (205). The inner walls of the plurality of connecting rings (205) are provided with grooves (206).

2. The crankshaft dynamic balancing structure of the press according to claim 1, characterized in that, The inner wall of the slide groove (206) is slidably connected to the outer wall of the slider (204). The inner wall of the connecting rod (203) is provided with a limiting groove (207). The inner wall of the limiting groove (207) is slidably connected to a plurality of support rods (208). The outer wall of one end of the plurality of support rods (208) away from the connecting rod (203) is rotatably connected to a fixing block (209). The outer wall of the fixing block (209) is fixedly connected to the outer wall of the connecting ring (205). The outer wall of the support rod (208) is fixedly connected to a damper (211). The outer wall of the damper (211) is fixedly connected to a spring (210). The outer wall of the support block (1) is provided with a lubrication mechanism (3).

3. The crankshaft dynamic balancing structure of the press according to claim 2, characterized in that, The lubrication mechanism (3) includes a pulley (301), the outer wall of which is fixedly connected to the outer wall of the crankshaft (102), and the inner wall of which is connected to a belt (302).

4. The crankshaft dynamic balancing structure of the press according to claim 3, characterized in that, The outer wall of the belt (302) away from the pulley (301) is connected to a second pulley (303). The outer wall of the second pulley (303) is rotatably connected to the outer wall of the support block (1). The outer wall of the second pulley (303) is fixedly connected to a positioning shaft (304).

5. The crankshaft dynamic balancing structure of the press according to claim 4, characterized in that, The outer wall of the positioning shaft (304) is fixedly connected to a plurality of bevel gears (305), and the outer walls of the plurality of bevel gears (305) are meshed with a second bevel gear (306), and the outer wall of the second bevel gear (306) is rotatably connected to the outer wall of the storage box (308).

6. The crankshaft dynamic balancing structure of the press according to claim 5, characterized in that, The outer wall of the storage box (308) is fixedly connected to the outer wall of the support block (1), and the second bevel gear (306) is fixedly connected to the outer wall of the side of the storage box (308) with a stirring block (307). The outer wall of the stirring block (307) is rotatably connected to the inner wall of the storage box (308).

7. The crankshaft dynamic balancing structure of the press according to claim 6, characterized in that, The outer wall of the storage box (308) is fixedly connected to several water pumps (309), and the output ends of several water pumps (309) are fixedly connected to water pipes (310). The outer wall of the water pipes (310) is fixedly connected to the inner wall of the support block (1).

8. The crankshaft dynamic balancing structure of the press according to claim 7, characterized in that, A positioning rod (311) is fixedly connected to the inner wall of the water pipe (310) away from the water pump (309). A baffle plate (313) is rotatably connected to the outer wall of the positioning rod (311). A barrier plate (312) is fixedly connected to the outer wall of the positioning rod (311) away from the baffle plate (313). Several guide grooves (314) are opened on the inner wall of the support block (1).

Images