阅读说明：本技术 带液压锁紧功能的滑块连接装置 (Sliding block connecting device with hydraulic locking function ) 是由 吴能松 李建平 张贵成 何建定 陈伟程 陈秋虹 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种带液压锁紧功能的滑块连接装置,包括滑块和连接装置；连接装置包括油缸、液压锁紧构件、调节螺母、调节螺杆,油缸固接于滑块上,油缸设有活动腔,活动腔的底部连通液压油,活动腔设有调节螺母,调节螺母的上端面安装有压紧螺母,调节螺杆伸入活动腔内且与压紧螺母、调节螺母螺纹配合,液压锁紧构件安装于油缸的顶部且通过液压油阻挡压紧螺母向上移动。本发明的压紧螺母驱动调节螺杆始终对调节螺母产生向下的压紧力,有效防止调节螺杆和调节螺母之间的螺纹间隙进行换向,从而避免产生有害冲击,同时由于压紧力的作用,调节螺杆和调节螺母之间的螺纹接触面会产生足够大的摩擦力,从而避免螺纹松动和提高冲压零件的精度。(The invention discloses a sliding block connecting device with a hydraulic locking function, which comprises a sliding block and a connecting device, wherein the sliding block is provided with a sliding block hole; the connecting device comprises an oil cylinder, a hydraulic locking member, an adjusting nut and an adjusting screw rod, the oil cylinder is fixedly connected onto the sliding block, the oil cylinder is provided with a movable cavity, the bottom of the movable cavity is communicated with hydraulic oil, the movable cavity is provided with the adjusting nut, a compression nut is installed on the upper end face of the adjusting nut, the adjusting screw rod stretches into the movable cavity and is in threaded fit with the compression nut and the adjusting nut, and the hydraulic locking member is installed at the top of the oil cylinder and blocks the compression nut to move upwards through the hydraulic oil. The pressing nut drives the adjusting screw rod to generate downward pressing force on the adjusting nut all the time, the reversing of the thread clearance between the adjusting screw rod and the adjusting nut is effectively prevented, and therefore harmful impact is avoided.)

1. The utility model provides a take slider connecting device of hydraulic pressure locking function which characterized in that includes:

a slider;

the connecting device comprises an oil cylinder, a hydraulic locking component, an adjusting nut and an adjusting screw rod, wherein the oil cylinder is fixedly connected to the sliding block, the oil cylinder is provided with a movable cavity, the bottom of the movable cavity is communicated with hydraulic oil, the movable cavity is provided with the rotatable adjusting nut, a compression nut is installed on the upper end face of the adjusting nut, the adjusting screw rod extends into the movable cavity and is in threaded fit with the compression nut and the adjusting nut, and the hydraulic locking component is installed at the top of the oil cylinder and blocks the compression nut from moving upwards through the hydraulic oil;

and the driving device is used for driving the adjusting nut to rotate.

2. The slider connecting device with hydraulic locking function according to claim 1, characterized in that: the hydraulic locking component comprises a compression oil cylinder and a compression ring, the compression ring is located above the compression oil cylinder and can move up and down the compression oil cylinder is installed at the top of the oil cylinder, the compression oil cylinder is clamped on the compression nut, a first piston is arranged in the compression oil cylinder, the upper end of the first piston is abutted to the bottom surface of the compression ring, and the bottom of the first piston is communicated with hydraulic oil.

3. The slider connecting device with hydraulic locking function according to claim 1, characterized in that: the movable cavity is also internally provided with a second piston which can move up and down, the adjusting nut is positioned above the second piston, and the adjusting screw rod extends into the second piston.

4. The slider connecting device with hydraulic locking function according to claim 1, characterized in that: the driving device comprises a worm wheel, a worm and a motor, the worm wheel is sleeved outside the adjusting nut and connected with the adjusting nut in a key mode, the worm is arranged in the oil cylinder and matched with the worm wheel, and the motor drives the worm to rotate.

5. A slider connection device with hydraulic locking function according to claim 3, characterized in that: and a nut adjusting pad is arranged between the adjusting nut and the second piston.

6. A slider connection device with hydraulic locking function according to claim 3, characterized in that: and a first sealing ring is arranged at the contact position of the second piston and the inner wall of the movable cavity.

7. The slider connecting device with hydraulic locking function according to claim 4, characterized in that: and an oil pool is arranged on the side surface of the connecting device and communicated with the oil cylinder.

8. The slider connecting device with hydraulic locking function according to claim 7, characterized in that: the cross-sectional area of the oil pool is larger than that of the oil cylinder.

9. A slider connection device with hydraulic locking function according to claim 3, characterized in that: and a piston retainer ring is arranged in the movable cavity, and the piston retainer ring is connected with the inner wall of the oil cylinder and clamped at the top of the second piston.

10. The slider connecting device with hydraulic locking function according to claim 2, characterized in that: and a second sealing ring is arranged at the contact position of the first piston and the inner wall of the pressing oil cylinder.

Technical Field

The invention relates to the technical field of press machine equipment, in particular to a sliding block connecting device with a hydraulic locking function.

Background

Certain axial clearance can be left in the screw thread cooperation between current adjusting screw and the adjusting nut, and the slider up-and-down motion in-process, under the effect of mould reaction force and slider inertia force, the screw thread clearance between adjusting screw and the adjusting nut can commutate from top to bottom, produces the impact each other, influences the mechanism life-span, and adjusting screw and adjusting nut also can produce rotation each other simultaneously to influence the slider at the repeatability of bottom dead center, finally can influence the precision of punching press part.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sliding block connecting device with a hydraulic locking function, which can improve the service life of a mechanism and the precision of a stamping part.

The slide block connecting device with the hydraulic locking function according to the embodiment of the first aspect of the invention comprises a slide block and a connecting device; the connecting device comprises an oil cylinder, a hydraulic locking component, an adjusting nut and an adjusting screw rod, wherein the oil cylinder is arranged on the sliding block, the oil cylinder is provided with a movable cavity, the bottom of the movable cavity is communicated with hydraulic oil, the movable cavity is provided with the rotatable adjusting nut, the upper end surface of the adjusting nut is provided with a compression nut, the adjusting screw rod extends into the movable cavity and is in threaded fit with the compression nut and the adjusting nut, and the hydraulic locking component is arranged at the top of the oil cylinder and blocks the compression nut from moving upwards through the hydraulic oil; and the driving device is used for driving the adjusting nut to rotate.

The sliding block connecting device with the hydraulic locking function provided by the embodiment of the invention at least has the following technical effects: the top of hydro-cylinder is equipped with hydraulic locking component, and under the drive of the high-pressure hydraulic oil that external hydraulic means provided, gland nut drive adjusting screw produced decurrent packing force to adjusting nut all the time, effectively prevented that the thread clearance between adjusting screw and the adjusting nut from commutating to avoid producing harmful impact, simultaneously because the effect of gland force, the screw thread contact surface between adjusting screw and the adjusting nut can produce enough big frictional force, thereby avoid the screw thread not hard up, and then improve the precision of punching press part.

According to some embodiments of the invention, the hydraulic locking member comprises a compression oil cylinder and a compression ring, the compression ring is positioned above the compression oil cylinder and is used for installing the compression oil cylinder capable of moving up and down on the top of the oil cylinder, the compression oil cylinder is clamped on the compression nut, a first piston is arranged in the compression oil cylinder, the upper end of the first piston is abutted against the bottom surface of the compression ring, and the bottom of the first piston is communicated with hydraulic oil.

According to some embodiments of the invention, a second piston capable of moving up and down is further arranged in the movable cavity, the adjusting nut is located above the second piston, and the adjusting screw rod extends into the second piston.

According to some embodiments of the invention, the driving device comprises a worm wheel, a worm and a motor, the worm wheel is sleeved outside the adjusting nut and is in key connection with the adjusting nut, the worm is arranged in the oil cylinder and is matched with the worm wheel, and the motor drives the worm to rotate.

According to some embodiments of the invention, a nut adjustment pad is provided between the adjustment nut and the second piston.

According to some embodiments of the invention, a first sealing ring is arranged at a contact position of the second piston and the inner wall of the movable cavity.

According to some embodiments of the invention, an oil sump is provided at a side of the connection device, the oil sump being in communication with the oil cylinder.

According to some embodiments of the invention, the cross-sectional area of the oil sump is greater than the cross-sectional area of the oil cylinder.

According to some embodiments of the invention, a piston retainer ring is arranged in the movable cavity, and the piston retainer ring is connected with the inner wall of the oil cylinder and clamped on the top of the second piston.

According to some embodiments of the invention, a second sealing ring is arranged at a contact position of the first piston and the inner wall of the pressing oil cylinder.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a slider connecting device with a hydraulic locking function according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a slider interface with hydraulic locking;

FIG. 3 is a cross-sectional view of the connection device;

fig. 4 is a cross-sectional view a-a of fig. 3.

Reference numerals: the hydraulic locking device comprises a sliding block 100, a connecting device 200, an oil cylinder 210, a movable cavity 211, a hydraulic locking member 220, a pressing oil cylinder 221, a pressing ring 222, a first piston 223, a first guide sleeve 224, an adjusting nut 230, an adjusting screw 240, a pressing nut 250, a second guide sleeve 251, a retaining ring 252, a second piston 260, a nut adjusting pad 261, a first sealing ring 262, a piston retaining ring 270, a flange 280, a driving device 300, a worm wheel 310, a worm 320, a motor 330 and an oil pool 400.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the description related to the orientation, such as the orientation or positional relationship indicated by the upper, lower, etc., is based on the orientation or positional relationship shown in the drawings. This is done solely for the purpose of facilitating the description of the invention and simplifying the description without indicating or implying that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be construed as limiting the invention.

In the description of the present invention, unless otherwise specifically limited, terms such as snap-fit, mounting, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, 2 and 3, a slider coupling device with a hydraulic locking function according to an embodiment of the present invention includes a slider 100 and a coupling device 200; the connecting device 200 comprises an oil cylinder 210, a hydraulic locking member 220, an adjusting nut 230 and an adjusting screw 240, wherein the oil cylinder 210 is fixedly connected to the slider 100, the oil cylinder 210 is provided with a movable cavity 211, the bottom of the movable cavity 211 is communicated with hydraulic oil, the movable cavity 211 is provided with the rotatable adjusting nut 230, the upper end surface of the adjusting nut 230 is provided with a compression nut 250, the adjusting screw 240 extends into the movable cavity 211 and is in threaded fit with the compression nut 250 and the adjusting nut 230, the hydraulic locking member 220 is arranged at the top of the oil cylinder 210 and blocks the compression nut 250 from moving upwards through the hydraulic oil; and the driving device 300 is used for driving the adjusting nut 230 to rotate.

The slide block connecting device is a mechanical device for connecting the slide block 100 of the press machine and the beam main transmission, and has the functions of transmitting the action and the power of the beam main transmission to the slide block 100 and simultaneously adjusting the position of the slide block 100 up and down through the connecting device 200 so as to meet the installation requirements of dies with different heights. Specifically, a plurality of connecting devices 200 may be provided, for example, as shown in fig. 1 and 2, two connecting devices 200 are mounted on the slider 100, and the oil cylinder 210 is directly welded on the slider 100, so that the existing threaded connection is eliminated, and on the premise that the weight of the slider 100 is not changed, the rigidity of the slider 100 is effectively improved, so that the machine has higher precision, and meanwhile, the slider 100 has a more compact structure, the height of the whole press machine is reduced, the machine cost is saved, and the mounting space required by the machine is reduced; as shown in fig. 3, a concave hole is formed in the middle of the oil cylinder 210 to form a movable cavity 211, a through hole is formed in the side wall of the bottom of the oil cylinder 210, the through hole is communicated with the movable cavity 211, and high-pressure hydraulic oil is introduced to the bottom of the movable cavity 211 through the through hole by an external hydraulic device; since the compression nut 250 is mounted on the adjusting nut 230, the compression nut 250 rotates along with the adjusting nut 230, specifically, the blocking ring 252 is mounted above the compression nut 250, the second guide sleeve 251 is mounted inside the compression nut 250, the lower end of the second guide sleeve 251 contacts with the top of the adjusting nut 230, the upper end of the second guide sleeve 251 contacts with the lower end of the blocking ring 252, the compression nut 250, the second guide sleeve 251 and the blocking ring 252 are mounted on the adjusting nut 230 by screws, and the compression nut 250 can slide up and down along the second guide sleeve 251. The compression nut 250 and the adjustment nut 230 are threadedly coupled to the adjustment screw 240.

As shown in fig. 3, in the adjustment state, the driving device 300 drives the adjusting nut 230 to rotate, the compression nut 250 above the adjusting nut 230 is limited by the hydraulic locking members 220 and the adjusting nut 230 and the compression nut 250 are fixed together or the compression nut 250 is limited by the second guide sleeve 251, the compression nut 250 and the adjusting nut 230 can move relatively in the axial direction but cannot move relatively in the circumferential direction, so the compression nut 250 rotates along with the adjusting nut 230, the upper end of the adjusting screw 240 is in main transmission connection with the cross beam, the adjusting screw 240 is in a stationary state and cannot rotate along with the compression nut 250 and the adjusting nut 230, so the compression nut 250 and the adjusting nut 230 move up and down along the adjusting screw 240 together, the adjusting nut 230 is connected and fixed with the slider 100 through the hydraulic locking members 220 and the cylinder 210, so the slider 100 also moves up and down, thereby meeting the installation requirements of moulds with different heights.

In the coupled state, the press performs a press work, as shown in fig. 3. When the slide block 100 moves downwards, the action and power of the main transmission of the cross beam of the press machine are transmitted to the adjusting nut 230 through the adjusting screw 240, and then transmitted to high-pressure oil through the nut adjusting pad 261, the hydraulic oil is transmitted to the oil cylinder 210, the oil cylinder 210 is transmitted to the slide block 100, and the slide block 100 is transmitted to the stamping die. When the sliding block 100 returns, under the driving of the main transmission of the cross beam of the press, the adjusting screw 240 drives the compression nut 250 to move upwards, the compression nut 250 drives the compression oil cylinder 221 to move upwards, the compression oil cylinder 221 moves upwards through the hydraulic locking member 220, the hydraulic locking member 220 drives the oil cylinder 210 to move upwards, the oil cylinder 210 drives the sliding block 100 to move upwards, and the sliding block 100 drives the mold to move upwards, so that the return stroke of the sliding block 100 is realized.

As shown in fig. 3, in the connection state, the hydraulic locking member 220 presses the compression nut 250 downwards under the action of oil pressure, the compression nut 250 presses the adjusting screw 240 downwards through threads, and the adjusting screw 240 presses the adjusting nut 230 downwards, so that the thread clearance between the adjusting screw 240 and the adjusting nut 230 can be effectively prevented from being reversed, thereby avoiding harmful impact, and simultaneously, due to the action of the compression force, the thread contact surface between the adjusting screw 240 and the adjusting nut 230 can generate enough friction force, thereby avoiding the loosening of the threads and improving the precision of the stamping part.

As shown in fig. 3, in the adjustment state, the hydraulic locking member 220 is decompressed, the hydraulic locking member 220 is in a relaxed state, the pressing force between the adjusting screw 240 and the adjusting nut 230 disappears, the adjusting screw 240 and the adjusting nut 230 rotate with each other under the driving of the driving device 300, and the slider 100 moves up and down along with the adjusting nut 230, so as to meet the installation requirements of the molds with different heights.

In some embodiments of the present invention, as shown in fig. 3, the hydraulic locking member 220 includes a pressing cylinder 221 and a pressing ring 222, the pressing ring 222 is located above the pressing cylinder 221 and mounts the pressing cylinder 221 capable of moving up and down on the top of the cylinder 210, the pressing cylinder 221 is clamped on the pressing nut 250, a first piston 223 is disposed in the pressing cylinder 221, the upper end of the first piston 223 abuts against the bottom surface of the pressing ring 222, and the bottom of the first piston 223 is communicated with hydraulic oil. Specifically, the connecting device 200 further comprises a flange 280, the flange 280 is mounted on the top of the oil cylinder 210 through screws, the compression oil cylinder 221 is located above the flange 280, the hydraulic locking member 220 further comprises screws and a first guide sleeve 224, a group of first guide sleeves 224 are mounted inside the compression oil cylinder 221, the lower end of the first guide sleeve 224 is in contact with the top of the flange 280, the upper end of the first guide sleeve 224 is in contact with the lower end of the compression ring 222, the compression ring 222 and the first guide sleeve 224 are mounted on the flange 280 through screws, and the compression oil cylinder 221 can slide up and down along the first guide sleeve 224; in the connected state, the press performs a punching operation. When the sliding block 100 returns, under the driving of the main transmission of the cross beam of the press, the adjusting screw 240 drives the compression nut 250 to move upwards, the compression nut 250 drives the compression oil cylinder 221 to move upwards, the compression oil cylinder 221 drives the compression ring 222 to move upwards through high-pressure oil and the first piston 223, the compression ring 222 drives the oil cylinder 210 to move upwards through a screw, the oil cylinder 210 drives the sliding block 100 to move upwards, and the sliding block 100 drives the mold to move upwards, so that the return stroke of the sliding block 100 is realized; in a connection state, high-pressure oil is introduced between the first piston 223 and the compression oil cylinder 221, the first piston 223 cannot move due to the limitation of the compression ring 222, the compression oil cylinder 221 compresses the compression nut 250 downwards under the action of oil pressure, the compression nut 250 compresses the adjusting screw 240 downwards through trapezoidal threads, the adjusting screw 240 compresses the adjusting nut 230 downwards, the reversing of a thread gap between the adjusting screw 240 and the adjusting nut 230 can be effectively prevented, harmful impact is avoided, and meanwhile due to the effect of the compression force, a sufficient friction force can be generated on a thread contact surface between the adjusting screw 240 and the adjusting nut 230, so that the loosening of threads is avoided; under the adjusting state, the high-pressure oil between the first piston 223 and the pressing oil cylinder 221 is decompressed, the pressing force between the adjusting screw 240 and the adjusting nut 230 disappears, the adjusting screw 240 and the adjusting nut 230 rotate mutually under the driving of the driving device 300, and the sliding block 100 can move up and down along with the adjusting nut 230, so that the installation requirements of molds with different heights are met.

In some embodiments of the present invention, as shown in fig. 3, a second piston 260 capable of moving up and down is further disposed in the movable chamber 211, the adjusting nut 230 is located above the second piston 260, and the adjusting screw 240 extends into the second piston 260. A second piston 260 is provided to avoid damage to the adjustment nut 230.

In some embodiments of the present invention, as shown in fig. 2, 3 and 4, the driving device 300 includes a worm wheel 310, a worm 320 and a motor 330, the worm wheel 310 is sleeved outside the adjusting nut 230 and is connected with the adjusting nut 230 in a keyed manner, the worm 320 is disposed inside the cylinder 210 and is matched with the worm wheel 310, and the motor 330 drives the worm 320 to rotate. The motor 330 is connected with the worm 320 through a small chain wheel, a chain and a big chain wheel; in the adjustment state, the motor 330 is powered on to drive the small chain wheel to rotate, the small chain wheel drives the large chain wheel to rotate through the chain, the large chain wheel drives the worm 320 to rotate, the worm 320 drives the worm wheel to rotate, and the worm wheel drives the adjusting nut 230 to rotate through the guide key; the worm gear 310 and worm 320 cooperate to prevent the adjustment nut 230 from spinning in and thereby improve the precision of the stamped parts.

In a further embodiment of the present invention, as shown in fig. 3, a nut adjustment pad 261 is provided between the adjustment nut 230 and the second piston 260. Damage to the adjusting nut 230 or the second piston 260 is avoided.

In a further embodiment of the present invention, as shown in fig. 3, a first sealing ring 262 is provided at the contact position of the second piston 260 and the inner wall of the movable chamber 211. To avoid hydraulic oil at the bottom of the second piston 260 from flowing to the top of the second piston 260.

In a further embodiment of the present invention, as shown in fig. 2 and 3, an oil sump 400 is disposed at a side of the connection device 200, and the oil sump 400 is communicated with the oil cylinder 210. To keep the worm 320 lubricated.

In a further embodiment of the present invention, as shown in fig. 3, the cross-sectional area of the oil sump 400 is larger than the cross-sectional area of the oil cylinder 210. The cross-sectional area is an area of a plane, which is taken in the horizontal direction in fig. 2 and by which the oil pool 400 or the oil cylinder 210 is cut; in the adjustment state, the adjusting screw 240 moves up and down relative to the slider 100, which can obviously change the liquid level of the lubricating oil in the oil cylinder 210 where the worm 320 is located; when the adjusting screw 240 moves downwards, the lower end of the adjusting screw 240 occupies the space of the hydraulic oil, and the oil level of the lubricating oil rises, which may overflow the oil cylinder 210 and flow to the outside of the connecting device 200, causing pollution; when the adjusting screw 240 moves upwards, the space occupied by the lower end of the adjusting screw 240 for hydraulic oil is reduced, the oil level of lubricating oil is lowered, and the liquid level of the lubricating oil may be lower than that of the worm 320, so that the lubricating effect on the worm 320 and a worm gear kinematic pair is lost, and the normal use of the machine is affected. In order to solve the problem that the oil level of the hydraulic oil fluctuates excessively in an adjustment state, an oil pool 400 is arranged on the side face of the connecting device 200, the oil pool 400 is communicated with the oil cylinder 210 through oil holes in the side face of the oil cylinder 210, and because the liquid level range of the oil pool 400 is large, when the liquid level of the lubricating oil in the oil cylinder 210 fluctuates up and down, the lubricating oil in the oil pool 400 can supplement and absorb the lubricating oil in the oil cylinder 210, so that the fluctuation range of the liquid level of the lubricating oil in the oil cylinder 210 is greatly reduced, the liquid level of the lubricating oil is always in contact with the worm 320, and the worm 320 and worm wheel 310 kinematic pair is ensured to be lubricated fully all the.

In a further embodiment of the present invention, as shown in fig. 3, a piston retaining ring 270 is disposed in the movable cavity 211, and the piston retaining ring 270 is connected to the inner wall of the cylinder 210 and is clamped to the top of the second piston 260. A piston stop 270 is provided to limit the range of upward movement of the second piston 260 to avoid interference of the second piston 260 with the adjusting nut 230 and the adjusting screw 240.

In a further embodiment of the present invention, a second sealing ring (not shown) is disposed at a position where the first piston 223 contacts with the inner wall of the pressing cylinder 221 to prevent the hydraulic oil from flowing out of the inner wall of the pressing cylinder 221.

In the description herein, references to the description of "some embodiments" or "what is conceivable" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.