Large lead ball screw high speed and high response injection structure

Abstract

The present invention discloses a high-speed and high-response injection structure of a large-lead ball screw, which relates to the technical field of plastic processing and molding, and includes a linear guide rail, and an auxiliary part is connected to one side of the linear guide rail by bolts. In the present invention, the two ends of the screw body are respectively connected to the positioning plate and the auxiliary part, and when the bevel gear three drives the bevel gear one to rotate, the bevel gear one rotates synchronously with the nut assembly, and the nut assembly moves along the axial direction of the screw body when rotating. The screw body is fixed, and the nut assembly is driven to rotate. The inertia of the nut assembly is small, and the movement is flexible, so that the high speed and high response of the whole structure can be achieved. During the movement of the extension part, the compressed air inside the piston cylinder is discharged through the heat dissipation pipe and the air is guided, so that the air is discharged on one side of the screw body, accelerating the air flow around the screw body, thereby achieving heat dissipation of the screw body, avoiding deformation of the screw body caused by friction heating, and ensuring the normal use of the screw body.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing and molding, in particular to a high-speed and high-response injection structure of a large-lead ball screw. Background Art

[0002] An injection molding machine is a main molding device that uses a plastic molding mold to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine includes an injection device. The injection device of an existing injection molding machine generally includes components such as a hydraulic motor, a screw, a barrel, and an injection cylinder.

[0003] For example, Chinese patent "CN106696213A" discloses an injection drive device for a micro injection molding machine, including an injection body, a spline ball screw and a machine body; a worm wheel is supported on the injection body, a worm is installed on the injection body, the worm wheel and the worm are meshed for transmission, an internal spline is opened in the worm wheel, the spline ball screw has an external spline and a spiral raceway, one end of the spline ball screw with an external spline is sleeved on the worm wheel, the injection body and the machine body are connected by a connecting bracket, a ball nut is fixed on the injection body, the ball nut is sleeved on the spline ball screw, and the piston is connected to the spline ball screw.

[0004] In the above-mentioned patent solution, although the problem of concentric error causing obstruction of movement is solved by using a spline ball screw and a piston, this structure is a driving method for the rotation of the screw. When used in a high-speed feed system with a large stroke, it is necessary to increase the length of the screw. When the screw length is long and the speed is high, it is easy to approach or reach the critical speed of the screw. At this time, the screw will vibrate violently, affecting the stability and accuracy of the system during use. Summary of the invention

[0005] The purpose of the present invention is to provide a large-lead ball screw high-speed and high-response injection structure to solve the problem that the structure proposed in the above background technology is a driving method for the rotation of the screw. When used in a high-speed feed system with a large stroke, it is necessary to increase the length of the screw. When the screw length is long and the rotation speed is high, it is easy to approach or reach the critical speed of the screw. At this time, the screw will vibrate violently, affecting the stability and accuracy of the system during use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-speed and high-response injection structure of a large-lead ball screw, comprising a linear guide rail, an auxiliary part is connected to one side of the linear guide rail by bolts, a buffer plate is engaged with one side of the auxiliary part, a positioning block is fixedly connected to one side of the auxiliary part, one side of the positioning block is connected to the linear guide rail by bolts, a sliding mechanism is arranged on one side of the positioning block, the sliding mechanism comprises a guide block, a slide table and an extension part, the guide block is slidably connected to the linear guide rail, one side of the guide block is fixedly connected to the slide table, one side of the slide table is fixedly connected to the extension part, one side of the extension part is fixedly connected to a mounting frame, one side of the mounting frame is fixedly connected to a motor, one end of the output shaft of the motor is fixedly connected to a bevel gear three, one side of the bevel gear three is meshed with a bevel gear one, one side of the bevel gear one is rotatably connected to the extension part, one side of the bevel gear one is fixedly connected to a nut assembly, and the nut assembly is rotatably connected to the extension part;

[0007] One side of the bevel gear one is meshed with bevel gear two, one side of the bevel gear two is fixedly connected to a driving disk, one side of the driving disk is provided with a connecting piece, one side of the driving disk is fixedly connected to a connecting rod, the connecting rod is inserted into the connecting piece, and one side of the connecting piece is fixedly connected to a piston body, the outer ring surface of the piston body is slidably connected to a piston cylinder, one side of the piston cylinder is fixedly connected to a heat dissipation pipe, and the heat dissipation pipe passes through the side wall of the extension piece.

[0008] Preferably, a support plate is fixedly connected to one side of the extension member, and the support plate is penetrated by one end of the second bevel gear, and the second bevel gear is rotationally connected to the support plate.

[0009] Preferably, one side of the extension piece is fixedly connected to a reinforcement plate, one side of the reinforcement plate is engaged with the piston cylinder, a cooling pipe is wrapped around the outer ring surface of the piston cylinder, one side of the cooling pipe is engaged with the extension piece, one end of the cooling pipe is fixedly connected to the extension pipe, the other end of the cooling pipe is fixedly connected to a liquid storage tank, one side of the liquid storage tank is engaged with the slide, and a liquid inlet is provided on one side of the liquid storage tank.

[0010] Preferably, a sealing cover is fixedly connected to one end of the piston cylinder, the sealing cover is penetrated by one end of the piston body, and the piston body and the sealing cover are slidably connected.

[0011] Preferably, the nut assembly is connected to a screw body through a thread, the screw body passes through bevel gear 1, one end of the screw body is fixedly connected to an auxiliary component, and a positioning plate is inserted into the other end of the screw body, and the bottom of the positioning plate is connected to the linear guide rail by bolts.

[0012] Preferably, an arc-shaped plate is overlapped on the outer ring surface of the nut assembly, an arc-shaped spring sheet is fixedly connected to one side of the arc-shaped plate, and one side of the arc-shaped spring sheet is snap-connected to the inner wall of the extension piece.

[0013] Preferably, an auxiliary cavity is opened inside the extension piece, a telescopic rod is fixedly connected to one side of the auxiliary cavity, a support plate is fixedly connected to the top of the telescopic rod, the support plate and the extension piece are slidingly connected, and an arc groove is opened on one side of the support plate, and one side of the arc groove overlaps with the nut assembly.

[0014] Preferably, a guide groove is provided on one side of the extension member, an extension block is slidably connected inside the guide groove, a limiting member is fixedly connected to one side of the extension block, and a locking strip is fixedly connected to one side of the limiting member.

[0015] Preferably, one side of the limit member is fixedly connected to a guide plate, one side of the guide plate is fixedly connected to an electric push rod, one side of the electric push rod is fixedly connected to a slide, the slide is penetrated by the guide plate, and the guide plate and the slide are slidably connected.

[0016] Preferably, a mounting plate is fixedly connected to one side of the slide, a mounting hole is opened on one side of the mounting plate, the mounting plate has a T-shaped cross-section, and the mounting plate is slidably connected to the guide plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present invention, the two ends of the screw body are respectively connected with the positioning plate and the auxiliary part. When the bevel gear three drives the bevel gear one to rotate, the bevel gear one rotates synchronously with the nut assembly. When the nut assembly rotates, it moves along the axial direction of the screw body. The screw body is fixed and the nut assembly is driven to rotate. In a high-speed feed system with a large stroke, the nut assembly has a small inertia and flexible movement, and the high speed and high response of the entire structure can be achieved. During the movement of the extension part, the compressed air inside the piston cylinder is discharged through the heat dissipation pipe and the air is guided so that the air is discharged on one side of the screw body, accelerating the air flow around the screw body, thereby realizing auxiliary heat dissipation of the screw body, avoiding deformation of the screw body due to friction heating, ensuring the normal use of the screw body, avoiding vibration of the screw, and ensuring the stable use of the system.

[0019] In the present invention, the top of the telescopic rod is fixedly connected to the support plate, and one side of the arc-shaped spring sheet is fixedly connected to the arc plate. The arc-shaped spring sheet applies a force to the arc plate to drive the inner wall of the arc plate to fit the nut assembly. The top of the nut assembly is supported by the support plate. The support plate and the arc-shaped plate can increase the contact area with the nut assembly, improve the support effect on the nut assembly, and reduce the position deviation of the nut assembly during the movement, thereby ensuring the stability of the nut assembly during movement, thereby reducing the wear of the nut assembly on the screw rod body, and thereby extending the service life of the screw rod body.

[0020] In the present invention, the top of the limit member is fixedly connected to the guide plate, and the electric push rod is fixedly connected to the guide plate. When the electric push rod is used to drive the guide plate to move, the limit member and the guide plate move synchronously, so that the engaging strip approaches the screw rod body. The two sides of the screw rod body are clamped by the limit member and the engaging strip, so that the extension member can be braked. When the guide plate and the limit member move, the slide and the guide groove can guide the guide plate and the limit member respectively, which can improve the stability of the limit member and the guide plate when moving. The symmetrically arranged limit members can be used to lock the position of the mounting plate and the slide to avoid displacement of the extension member, thereby ensuring the movement accuracy of the entire structure when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation of the positioning block of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the installation of the guide block structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the installation of the auxiliary parts structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation of the heat dissipation pipe structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the meshing structure of bevel gear 1 and bevel gear 2 of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the installation of the piston body structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0028] Figure 8 It is a schematic cross-sectional view of the arc plate structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0029] Fig. 9 It is a schematic diagram of the installation of the telescopic rod structure of the large-lead ball screw high-speed and high-response injection structure of the present invention.

[0030] In the figure:

[0031] 1. Mounting plate; 2. Sliding mechanism; 21. Guide block; 22. Slide; 23. Limiting piece; 231. Clamping strip; 232. Extension block; 24. Extension piece; 241. Bevel gear 1; 242. Support plate; 243. Arc spring piece; 244. Nut assembly; 245. Support plate; 246. Arc plate; 247. Telescopic rod; 248. Reinforcement plate; 249. Guide groove; 25. Guide plate; 26. Electric push rod ; 27, piston cylinder; 271, cooling pipe; 272, liquid storage tank; 273, extension pipe; 274, heat dissipation pipe; 275, piston body; 276, connecting piece; 277, drive plate; 278, bevel gear two; 279, connecting rod; 28, motor; 281, bevel gear three; 282, mounting bracket; 3, linear guide rail; 4, screw body; 5, positioning plate; 6, positioning block; 61, buffer plate; 62, auxiliary parts. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] Reference Figure 1-Figure 7 As shown: a high-speed and high-response injection structure of a large-lead ball screw includes a linear guide rail 3, one side of the linear guide rail 3 is connected to an auxiliary part 62 by bolts, one side of the auxiliary part 62 is engaged with a buffer plate 61, one side of the auxiliary part 62 is fixedly connected to a positioning block 6, one side of the positioning block 6 is connected to the linear guide rail 3 by bolts, one side of the positioning block 6 is provided with a sliding mechanism 2, the sliding mechanism 2 includes a guide block 21, a slide table 22 and an extension 24, the guide block 21 is slidably connected to the linear guide rail 3, and one side of the guide block 21 is connected to the slide The table 22 is fixedly connected, one side of the slide 22 is fixedly connected to the extension piece 24, one side of the extension piece 24 is fixedly connected with a mounting bracket 282, one side of the mounting bracket 282 is fixedly connected with a motor 28, one end of the output shaft of the motor 28 is fixedly connected with a bevel gear three 281, one side of the bevel gear three 281 is meshed with a bevel gear one 241, one side of the bevel gear one 241 is rotatably connected to the extension piece 24, one side of the bevel gear one 241 is fixedly connected with a nut assembly 244, and the nut assembly 244 and the extension piece 24 are rotatably connected.

[0035] One side of the bevel gear 1 241 is meshed with a bevel gear 278, one side of the bevel gear 278 is fixedly connected to a driving disk 277, one side of the driving disk 277 is provided with a connecting piece 276, one side of the driving disk 277 is fixedly connected to a connecting rod 279, the connecting rod 279 is inserted through the connecting piece 276, and one side of the connecting piece 276 is fixedly connected to a piston body 275, the outer ring surface of the piston body 275 is slidably connected to a piston cylinder 27, one side of the piston cylinder 27 is fixedly connected to a heat dissipation pipe 274, the heat dissipation pipe 274 penetrates the side wall of the extension piece 24, one side of the extension piece 24 is fixedly connected to a support plate 242, the support plate 242 is penetrated by one end of the bevel gear 278, and the bevel gear Wheel two 278 is rotatably connected with the support plate 242, one side of the extension piece 24 is fixedly connected with a reinforcement plate 248, one side of the reinforcement plate 248 is engaged with the piston cylinder 27, a cooling tube 271 is wrapped around the outer ring surface of the piston cylinder 27, one side of the cooling tube 271 is engaged with the extension piece 24, one end of the cooling tube 271 is fixedly connected with the extension tube 273, the other end of the cooling tube 271 is fixedly connected with a liquid storage tank 272, one side of the liquid storage tank 272 is engaged with the slide 22, a liquid inlet is provided on one side of the liquid storage tank 272, one end of the piston cylinder 27 is fixedly connected with a sealing cover, the sealing cover is penetrated by one end of the piston body 275, and the piston body 275 and the sealing cover are slidably connected.

[0036] In this example, the bottom of the auxiliary part 62 can be supported by the linear guide rail 3, and the auxiliary part 62 can be supported by a rubber buffer plate 61 on one side. The buffer plate 61 can be used to buffer the bevel gear three 281 and the bevel gear two 278 on one side to avoid collision between the bevel gear three 281 and the bevel gear two 278 and the auxiliary part 62. The contact area between the slide 22 and the linear guide rail 3 can be increased by the guide block 21. The linear guide rail 3 can be used to guide the movement of the guide block 21. The connection between the guide block 21 and the extension member 24 can realize the synchronous movement of the extension member 24 and the guide block 21. The mounting bracket 282 can be used to support one side of the motor 28. The support is provided to facilitate the stable installation and use of the motor 28 on one side of the extension member 24. The motor 28 can provide power for the rotation of the bevel gear three 281, thereby driving the bevel gear three 281 to rotate stably on one side of the extension member 24. Through the engagement between the bevel gear three 281 and the bevel gear one 241, the synchronous rotation of the bevel gear one 241 can be achieved when the bevel gear three 281 rotates, thereby achieving the synchronous rotation of the bevel gear one 241 and the nut assembly 244, which can improve the stability of the nut assembly 244 when it rotates inside the extension member 24, provide power for the rotation of the nut assembly 244, and then drive the subsequent nut assembly 244 to move along the screw body 4.

[0037] At the same time, through the meshing of bevel gear 1 241 and bevel gear 2 278, the synchronous rotation of bevel gear 2 278 can be achieved when bevel gear 1 241 rotates. The support plate 242 can be used to support the rotation of bevel gear 2 278. The fixed connection between drive disk 277 and bevel gear 2 278 can achieve the synchronous rotation of drive disk 277 and bevel gear 2 278. The connection between drive disk 277 and connecting member 276 can be achieved through connecting rod 279. When connecting rod 279 moves in a circle with drive disk 277, it can apply a horizontal force to connecting member 276. , thereby driving the connecting piece 276 to move in the horizontal direction, and then driving the piston body 275 to slide inside the piston cylinder 27. The piston cylinder 27 can limit the movement direction of the piston body 275 and the connecting piece 276. The sealing cover can improve the sealing of one side of the piston cylinder 27. Through the connection between the heat dissipation pipe 274 and the piston cylinder 27, the compressed air inside the piston cylinder 27 can be quickly discharged. The heat dissipation pipe 274 is T-shaped. Through the through hole opened on one side of the heat dissipation pipe 274, the contact area between the air and the screw body 4 can be increased, thereby accelerating the air around the screw body 4. The cooling element 248 can be used to support the bottom of the piston cylinder 27, so as to improve the stability of the piston cylinder 27 when it is used on one side of the extension piece 24. The contact area between the cooling tube 271 and the piston cylinder 27 can be increased by wrapping the cooling tube 271 with the piston cylinder 27, so as to accelerate the heat exchange on the surface of the piston cylinder 27, and realize the cooling assistance of the piston cylinder 27, so as to avoid the excessive temperature inside the piston cylinder 27 affecting the temperature of the exhaust air. The extension tube 273 can assist the connection between one end of the cooling tube 271 and the external water pump. The liquid storage tank 272 can assist in the recovery of the coolant inside the cooling pipe 271. The slide 22 can support one side of the liquid storage tank 272 to ensure the stable use of the liquid storage tank 272. The external water pump, extension pipe 273, cooling pipe 271 and liquid storage tank 272 form a coolant circulation, and then the circulation of coolant is utilized to accelerate the heat dissipation of the piston cylinder 27. The coolant can be supplemented through the liquid inlet on one side of the liquid storage tank 272, thereby ensuring a stable supply of coolant inside the cooling pipe 271, and further ensuring the cooling effect on the piston cylinder 27.

[0038] Embodiment 2:

[0039] according to Figure 1-Figure 9As shown, the nut assembly 244 is connected to the screw body 4 through a thread, the screw body 4 passes through the bevel gear 241, one end of the screw body 4 is fixedly connected to the auxiliary part 62, and the other end of the screw body 4 is inserted with a positioning plate 5, the bottom of the positioning plate 5 is connected to the linear guide 3 by bolts, and the outer ring surface of the nut assembly 244 is overlapped with an arc plate 246, one side of the arc plate 246 is fixedly connected with an arc spring piece 243, one side of the arc spring piece 243 is snap-connected with the inner wall of the extension piece 24, an auxiliary cavity is opened inside the extension piece 24, one side of the auxiliary cavity is fixedly connected with a telescopic rod 247, the top of the telescopic rod 247 is fixedly connected with a support plate 245, the support plate 245 is slidably connected to the extension piece 24, and one side of the support plate 245 is opened with an arc groove, one side of the arc groove is overlapped with the nut assembly 244.

[0040] In this embodiment, the connection between the nut assembly 244 and the screw body 4 can be achieved through the thread, and the auxiliary member 62 can be used to fix one end of the screw body 4, and the positioning plate 5 can be used to support the other end of the screw body 4, so as to achieve stable installation and use of the screw body 4 on the linear guide rail 3, ensuring that the screw body 4 does not rotate, and the connection between the inner wall of the extension member 24 and the arc plate 246 can be achieved through the arc spring piece 243. The arc plate 246 is arc-shaped, which can ensure that the inner wall of the arc plate 246 fits the outer ring surface of the nut assembly 244, and the arc spring piece 243 can be used to apply a force pointing to the center of the screw body 4 to the arc plate 246. The force can reduce the deviation of the nut assembly 244. At the same time, the inner wall of the arc plate 246 overlaps with the outer ring surface of the nut assembly 244, thereby avoiding the motion interference of the arc plate 246 when the nut assembly 244 rotates. A spring is installed inside the telescopic rod 247. The telescopic rod 247 can be used to drive the support plate 245 to rise and fall in the auxiliary cavity of the extension piece 24, thereby providing buffer protection for the bottom of the support plate 245. The support plate 245 can be used to support the bottom of the nut assembly 244, thereby ensuring that the center of the nut assembly 244 and the center of the screw body 4 are on the same axis, thereby improving the stability of the nut assembly 244 when moving.

[0041] Embodiment three:

[0042] according to Figure 1-Figure 5 As shown, a guide groove 249 is provided on one side of the extension member 24, and an extension block 232 is slidably connected inside the guide groove 249. One side of the extension block 232 is fixedly connected to a limiting member 23, and one side of the limiting member 23 is fixedly connected to a locking strip 231. One side of the limiting member 23 is fixedly connected to a guide plate 25, and one side of the guide plate 25 is fixedly connected to an electric push rod 26. One side of the electric push rod 26 is fixedly connected to the slide 22. The slide 22 is penetrated by the guide plate 25, and the guide plate 25 and the slide 22 are slidably connected. One side of the slide 22 is fixedly connected to a mounting plate 1, and a mounting hole is provided on one side of the mounting plate 1. The cross-section of the mounting plate 1 is T-shaped, and the mounting plate 1 and the guide plate 25 are slidably connected.

[0043] In this embodiment, the guide groove 249 can be used to guide the movement of the extension block 232, thereby improving the stability of the extension block 232 when it moves on one side of the extension member 24. The snap-fit ​​strip 231 can be inserted into the gap of the thread of the screw body 4. The snap-fit ​​strip 231 can increase the friction between one side of the limit member 23 and the screw body 4, thereby reducing the loosening of the limit member 23 during braking. The guide plate 25 can be used to achieve the connection between the electric push rod 26 and the limit member 23. The slide 22 can be used to guide the movement of the guide plate 25. The electric push rod 26 can be a guide plate. The guide plate 25 is provided with power for movement, thereby adjusting the distance between the two limit members 23, and the screw body 4 is clamped by the two limit members 23, so as to complete the braking of the extension member 24. The bottom of the mounting plate 1 can be supported by the slide 22, and the cross section of the mounting plate 1 is T-shaped. When the guide plate 25 moves, the mounting plate 1 will not block the movement of the guide plate 25, so as to ensure the normal movement of the guide plate 25. When the mounting plate 1 moves synchronously with the slide 22, the linear guide rail 3 can guide the movement of the slide 22, and can also support the slide 22 and the guide block 21.

[0044] The method of using the device and the working principle are as follows: first, the components that need to be moved in the injection molding machine can be connected to the mounting plate 1 by using the mounting holes on the mounting plate 1, and the motor 28 is used to drive the bevel gear 3 281 to rotate, and the bevel gear 3 281 is meshed with the bevel gear 1 241, driving the bevel gear 1 241 to rotate on one side of the extension 24, and the bevel gear 1 241 and the nut assembly 244 rotate synchronously to realize the rotation of the nut assembly 244 inside the extension 24. Since the screw body 4 is fixed, under the action of the threads of the nut assembly 244 and the screw body 4, the nut assembly 244 can move axially along the screw body 4, thereby driving the extension 24 to move along the screw body 4, and the slide 22 and the guide block 21 move along the linear guide rail. 3 moves. When moving, the bevel gear 1 241 drives the bevel gear 2 278 to rotate. The bevel gear 278 and the driving disk 277 rotate synchronously on both sides of the support plate 242 respectively. When the driving disk 277 rotates, the connecting rod 279 moves with the driving disk 277, exerts a force on the connecting member 276, and makes the connecting member 276 move along the axial direction of the piston cylinder 27, thereby driving the piston body 275 to perform piston movement inside the piston cylinder 27, compressing the gas inside the piston cylinder 27. The compressed gas can enter the heat dissipation pipe 274 and be discharged through the through hole on one side of the heat dissipation pipe 274, accelerating the air flow around the screw body 4 inside the extension member 24, thereby realizing the cooling of the screw body 4;

[0045] At the same time, an end of the extension tube 273 is externally connected to a water pump, and the water inlet of the water pump is connected to the liquid storage tank 272. The water pump accelerates the circulation of the coolant between the liquid storage tank 272 and the cooling pipe 271. The flow of the coolant inside the cooling pipe 271 accelerates the heat exchange on the surface of the piston cylinder 27, thereby achieving auxiliary cooling of the piston cylinder 27 and preventing the temperature inside the piston cylinder 27 from being too high and affecting the temperature of the exhaust air. The coolant can be supplemented through the liquid inlet on one side of the liquid storage tank 272, thereby ensuring a stable supply of coolant inside the cooling pipe 271, thereby ensuring the cooling effect on the piston cylinder 27. During the movement of the extension member 24, the support plate 245 exerts an upward supporting force on the nut assembly 244, and the arc-shaped spring piece 243 drives the arc-shaped plate 246 to move toward the side close to the nut assembly 244, so that the arc-shaped plate 246 fits with the outer ring surface of the nut assembly 244. While ensuring the rotation of the nut assembly 244, the deviation of the nut assembly 244 and the center of the screw body 4 can be reduced, so that the center of the nut assembly 244 coincides with the center of the screw body 4, ensuring the stable use of the nut assembly 244, thereby reducing the wear on the screw body 4 caused by the position deviation during the rotation of the nut assembly 244;

[0046] When reaching the designated position, the motor 28 is controlled by an external controller to stop working, and the electric push rod 26 is started. The two electric push rods 26 drive the guide plate 25 to move along the slide 22, and the extension block 232 slides inside the guide groove 249. The limit piece 23 and the locking strip 231 move to the side close to the screw body 4, and the locking strip 231 is inserted into the gap of the screw body 4. The limit pieces 23 on both sides clamp the screw body 4. At this time, the extension piece 24 is quickly braked, and the slide 22 no longer moves, and the injection action of the injection molding machine is terminated.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-lead ball screw high-speed and high-response injection structure, comprising a linear guide rail (3), characterized in that: One side of the linear guide rail (3) is connected to an auxiliary part (62) by bolts, one side of the auxiliary part (62) is engaged with a buffer plate (61), one side of the auxiliary part (62) is fixedly connected to a positioning block (6), one side of the positioning block (6) is connected to the linear guide rail (3) by bolts, one side of the positioning block (6) is provided with a sliding mechanism (2), the sliding mechanism (2) comprises a guide block (21), a slide table (22) and an extension member (24), the guide block (21) is slidably connected to the linear guide rail (3), one side of the guide block (21) is fixedly connected to the slide table (22), and the slide table One side of the extension member (22) is fixedly connected to the extension member (24), one side of the extension member (24) is fixedly connected to a mounting frame (282), one side of the mounting frame (282) is fixedly connected to a motor (28), one end of the output shaft of the motor (28) is fixedly connected to a bevel gear three (281), one side of the bevel gear three (281) is meshed with a bevel gear one (241), one side of the bevel gear one (241) is rotationally connected to the extension member (24), one side of the bevel gear one (241) is fixedly connected to a nut assembly (244), and the nut assembly (244) is rotationally connected to the extension member (24); One side of the bevel gear 1 (241) is meshed with a bevel gear 2 (278), one side of the bevel gear 2 (278) is fixedly connected to a drive disk (277), one side of the drive disk (277) is provided with a connecting piece (276), one side of the drive disk (277) is fixedly connected to a connecting rod (279), the connecting rod (279) is inserted through the connecting piece (276), and one side of the connecting piece (276) is fixedly connected to a piston body (275), the outer ring surface of the piston body (275) is slidably connected to a piston cylinder (27), one side of the piston cylinder (27) is fixedly connected to a heat dissipation pipe (274), and the heat dissipation pipe (274) passes through the side wall of the extension piece (24); The nut assembly (244) is connected to a screw body (4) via a threaded connection, the screw body (4) passes through bevel gear 1 (241), one end of the screw body (4) is fixedly connected to an auxiliary component (62), the other end of the screw body (4) is plugged with a positioning plate (5), and the bottom of the positioning plate (5) is connected to the linear guide rail (3) via bolts; The outer annular surface of the nut assembly (244) is overlapped with an arc-shaped plate (246), one side of the arc-shaped plate (246) is fixedly connected with an arc-shaped spring sheet (243), and one side of the arc-shaped spring sheet (243) is snap-fitted and connected to the inner wall of the extension piece (24); An auxiliary cavity is provided inside the extension member (24), a telescopic rod (247) is fixedly connected to one side of the auxiliary cavity, a support plate (245) is fixedly connected to the top of the telescopic rod (247), the support plate (245) is slidably connected to the extension member (24), and an arc groove is provided on one side of the support plate (245), and one side of the arc groove overlaps with the nut assembly (244); A guide groove (249) is formed on one side of the extension member (24), an extension block (232) is slidably connected inside the guide groove (249), one side of the extension block (232) is fixedly connected to a limiting member (23), and one side of the limiting member (23) is fixedly connected to a locking strip (231); One side of the limit member (23) is fixedly connected to a guide plate (25), one side of the guide plate (25) is fixedly connected to an electric push rod (26), one side of the electric push rod (26) is fixedly connected to the slide table (22), the slide table (22) is penetrated by the guide plate (25), and the guide plate (25) and the slide table (22) are slidably connected; A mounting plate (1) is fixedly connected to one side of the slide (22), a mounting hole is provided on one side of the mounting plate (1), the mounting plate (1) has a T-shaped cross section, and the mounting plate (1) is slidably connected to the guide plate (25).

2. The large lead ball screw high speed and high response injection structure according to claim 1, characterized in that: A support plate (242) is fixedly connected to one side of the extension piece (24); one end of the second bevel gear (278) penetrates the support plate (242); the second bevel gear (278) and the support plate (242) are rotatably connected.

3. The large lead ball screw high speed and high response injection structure according to claim 1, characterized in that: One side of the extension member (24) is fixedly connected to a reinforcement plate (248), one side of the reinforcement plate (248) is engaged with the piston cylinder (27), a cooling tube (271) is wound around the outer ring surface of the piston cylinder (27), one side of the cooling tube (271) is engaged with the extension member (24), one end of the cooling tube (271) is fixedly connected to an extension tube (273), the other end of the cooling tube (271) is fixedly connected to a liquid storage tank (272), one side of the liquid storage tank (272) is engaged with the slide table (22), and one side of the liquid storage tank (272) is provided with a liquid inlet.

4. The large lead ball screw high speed and high response injection structure according to claim 1, characterized in that: A sealing cover is fixedly connected to one end of the piston cylinder (27), and the sealing cover is penetrated by one end of the piston body (275). The piston body (275) and the sealing cover are slidably connected.

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