CN106041502A - Servo intelligent screw locking mechanism - Google Patents

Abstract

The invention relates to the field of screw locking and paying equipment, in particular to a servo intelligent screw locking mechanism which comprises a support frame, a driving unit, a rotating sliding sleeve piece, a sliding unit and a locking and paying unit, wherein the driving unit is arranged on the support frame, the rotating sliding sleeve piece, the sliding unit and the locking and paying unit are arranged on the support frame, the support frame is provided with a moving piece used for enabling a sliding block to move up and down, the driving unit comprises a servo motor, a first air cylinder, a second air cylinder and a fixing plate, the fixing plate is fixedly arranged on the support frame, the sliding block unit is arranged on the moving piece, one end of the rotating sliding sleeve piece is connected with the servo motor, the other end of the rotating sliding sleeve piece is in transmission connection with the locking and paying unit, the driving unit is connected with the sliding unit, the locking. The invention effectively prolongs the service life of the equipment, has higher stability and improves the yield and the product quality of the locking screws.

Description

A servo intelligent locking screw mechanism

technical field

The invention relates to the field of screw locking devices, in particular to a servo intelligent locking screw mechanism.

Background technique

In the assembly process of machinery, electrical appliances and other products, it is often necessary to perform various locking screw operations. The traditional way is to use a moving screwdriver to lock the screw. However, this inefficient manual operation can no longer meet the needs of modern mass production and mechanical automation. For this reason, people have developed an automatic screw locking machine. The equipment can automatically feed screws and lock screws, which greatly improves production efficiency and meets the needs of modern mass production and assembly.

In the prior art, the drive unit is usually only equipped with a servo motor and a locking cylinder, but when the lock is not good, the screws that are still adsorbed on the screw rod need to be manually removed, which affects the production efficiency; The servo motor usually also moves up and down with the locking process, which affects the service life of the motor and reduces the stability of the equipment work; third, in the prior art, the screw limiter is generally used for the depth control of the locking , It cannot adapt to a product that has multiple different planes that need to be locked with screws, or the surfaces with different heights need to be locked with screws, and the height of the electric batch needs to be replaced or adjusted during use, which seriously affects the working efficiency and reduces the production capacity.

Contents of the invention

The technical problem to be solved by the present invention is to provide a servo intelligent screw locking mechanism that can accurately and conveniently locate the screw locking depth, increase the working life of the equipment, and remove bad locking screws.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A servo intelligent lock screw mechanism, including a support frame, a drive unit, a rotating and sliding kit, a sliding unit, a locking unit and a sensor arranged on the support frame, is characterized in that the support frame is equipped with The moving part, the driving unit is fixedly installed on the support frame, the slider unit is installed on the moving part, the rotating sliding kit is installed on the sliding unit, one end of the rotating sliding kit is connected to the driving unit, and the other end is connected to the locking unit for transmission connected, the driving unit is connected with the sliding unit.

A further improvement of the technical solution is that the drive unit includes a servo motor, a first cylinder, a second cylinder and a fixing plate, and the servo motor, the first cylinder and the second cylinder are installed on the support frame through the fixing plate.

A further improvement of the technical solution is that the locking unit includes a screwdriver and a screw clamp, and when the screw clamp moves upward under the action of the second cylinder, the screwdriver moves downward relative to the screw clamp Push the screw out.

The further improvement of the technical solution is that the rotating and sliding kit includes a transmission coupling, a batch lever connecting shaft, an electric batch mounting seat, a rolling bearing and a spring sleeve, one end of the transmission coupling is connected to the servo motor, and the other end is connected to the batch The connecting shaft of the rod corresponds to the sliding connection, and the spring sleeve is sleeved on the connecting shaft of the rod rod, and the connecting shaft of the rod rod is closely connected with the rolling bearing, and the rolling bearing is firmly installed on the mounting seat of the electric batching rod.

A further improvement of the technical solution is that the connecting shaft of the batch rod is a flat shaft keyway shaft, a spline shaft or a polygonal shaft, and the moving part is a linear guide rail or a linear bearing.

A further improvement of the technical solution is to further include a sensor, the sensor is installed on the sliding unit, and the sensor is a displacement sensor or a depth sensor.

A further improvement of the technical solution is that the sliding unit includes a first sliding block and a second sliding block, the first sliding block is connected to the first cylinder through a cylinder connecting piece, and the sensor is installed on the side of the first sliding block On the side, the second slider is equipped with an induction sheet.

A further improvement of the technical solution is that the second cylinder is connected with a connecting rod, the connecting rod is passed through the first slider and the second slider, and the connecting rod between the first slider and the second slider is sleeved There is a spring, an end cover is fixedly installed on the end of the connecting rod connected with the second slide block, and the second slide block is provided with a U-shaped chuck.

A further improvement of the technical solution is that the screw clamp is fixedly connected to the connecting shaft of the screw clamp through a spring sleeve through the screw clamp, and the screw clamp is firmly installed on the U-shaped clamp.

A further improvement of the technical solution is that the screw chuck is equipped with a deep hole sleeve.

The beneficial effects of the present invention are:

The invention provides a servo intelligent screw locking mechanism that can accurately locate the depth of the locking screw and increase the working life of the equipment. First, the servo motor, the first cylinder and the second cylinder are all fixed on the cylinder fixing plate. During the working process, The servo motor, the first cylinder and the second cylinder do not move up and down, but only provide rotational power, which effectively reduces the weight of the sliding unit, avoids the unstable factors generated by the mechanism during the movement, reduces the impact of its up and down movement, and increases the equipment capacity. The stability of the mechanism increases the service life of the mechanism. Due to the performance of the servo motor, the parameters such as the speed, torque, rotation angle, and reverse of the locking screw can be controlled and the operating status can be displayed online to realize intelligent work and improve the yield rate of the locking screw. and product quality;

Second, a second air cylinder is installed in the drive unit. If the locking is not good during the working process, the screw is adsorbed on the batch rod. At this time, the second air cylinder works and lifts the second slider connected to the second air cylinder through the connecting rod. , at this time, the batching rod moves downward relative to the second slider, and the screw can be pushed out, so as to avoid affecting the subsequent locking work.

Third, the first slider is equipped with a sensor, and the second slider is provided with an induction sheet corresponding to the sensor. During work, the sensor accurately locates the distance between the batch lever installed on the first slider and the second slider, and at the same time Accurately locate the depth of the locking screw, if it exceeds the set value, the servo motor can also be reversed to lock the screw to set the depth;

Fourth, install the transmission coupling, the connecting shaft of the batch lever and the spring sleeve on the first slider through the electric batch mounting seat and rolling bearings, and the rotation and sliding kit is rotated under the action of the servo motor and the first cylinder, and at the same time the rotation lock is performed. At the same time, the connecting shaft of the batching rod and the batching rod are fixedly connected through the spring sleeve, so as to realize the quick disassembly and assembly between the connecting shaft of the batching rod and the batching rod, and improve the working efficiency.

Fifth, when deep-hole screws need to be installed, deep-hole sleeves can also be installed to enhance the accuracy of installation.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of a viewing angle of the present invention;

Fig. 2 is a schematic diagram of an explosion structure of the present invention;

Fig. 3 is a schematic perspective view of the three-dimensional structure of the present invention from another perspective.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

As shown in Figures 1 to 3, a servo intelligent locking screw mechanism includes a support frame 1, a drive unit 2 arranged on the support frame 1, a rotating and sliding kit 3, a sliding unit 4, and a locking unit 5. The support frame 1 is installed There is a moving part 11 for the slider to move up and down, and the drive unit 2 includes a servo motor 21, a first cylinder 22, a second cylinder 23 and a fixed plate 24, the fixed plate 24 is fixedly installed on the support frame 1, the servo motor 21, the first cylinder 22 and the second cylinder 23 are fixedly installed on the upper surface of the fixed plate 24, the slider unit is installed on the moving part 11, and the rotating sliding sleeve 3 is installed on the sliding unit 4, and one end of the rotating sliding sleeve 3 is connected with the servo motor 21, and the other end is connected with the servo motor 21. The locking unit 5 is connected by transmission, and the drive unit 2 is connected with the sliding unit 4. The locking unit 5 includes a screw rod 51 and a screw clamp 52. During the working process, the servo motor 21, the first cylinder 22 and the second cylinder 23 do not move up and down. Movement, only provides rotational power, avoids the unstable factors generated by the mechanism during the movement, increases the stability of the equipment, and at the same time increases the service life of the equipment. Due to the performance of the servo motor, the speed and torque of the locking screw can be controlled. , rotation angle, reverse and other parameters and online display of operating status, realize intelligent work, improve the yield rate and product quality of locking screws, and when the screw chuck 52 moves upward under the action of the second cylinder 23, the screwdriver 51 passes through Moving downward relative to the screw clamp mouth 52 to eject the screw, the displacement sensor 6 is installed on the sliding unit 4;

The rotary sliding kit 3 includes a transmission coupling 31, a batch rod 51 connecting shaft, an electric batch mounting seat 33, a rolling bearing 34 and a spring sleeve 36, one end of the transmission coupling 31 is connected with the servo motor 21, and the other end corresponds to the batch rod connecting shaft 32 Sliding connection, the spring sleeve 36 is sleeved on the connecting shaft 32 of the batch rod, the connecting shaft 32 of the batch rod is closely connected with the rolling bearing 34, the rolling bearing 34 is tightly installed on the electric batch mounting seat 33, the connecting shaft 32 of the batch rod is a polygonal shaft, and the connecting shaft of the batch rod The structure of 32 corresponds to the internal structure of the transmission coupling 31, which is convenient for the connecting shaft 32 to slide up and down well in the transmission coupling 31, and ensures that the power of the servo motor 21 can be effectively transmitted to the transmission shaft 51, thereby improving production. cost utilization.

One end of the transmission coupling 31 connected to the servo motor 21 is screwed with a lock nut 311 to improve the stability of the connection between the transmission coupling 31 and the servo motor 21 .

The sliding unit 4 includes a first slider 41 and a second slider 42, the first slider 41 is connected to the first cylinder 22 through a cylinder connector 7, the cylinder connector 7 can effectively connect the cylinder and the first slider 41, and has The function of cushioning protects the first slider 41 and the first cylinder 22 at the same time, the displacement sensor 6 is installed on the side of the first slider 41, the second slider 42 is equipped with a sensing piece 61, and the displacement sensor 6 and the sensing piece 61 The setting is convenient to control the depth of the lock screw, which ensures the yield and accuracy of the screw lock.

The second cylinder 23 is connected with a connecting rod 421, the connecting rod 421 passes through the first slider 41 and the second slider 42, and the connecting rod 421 between the first slider 41 and the second slider 42 is covered with a spring One end of the connecting rod 421 connected to the second slider 42 is fixedly equipped with an end cover 423 to prevent the second slider 42 from detaching from the connecting rod 421 downwards, and the second slider 42 is controlled to move up and down by the connecting rod 421 to make the screw clamp 52 clearing function is realized, the second slider 42 is provided with a U-shaped clamp 422, so that the screw clamp 52 can be disassembled, and different screw clamps 52 can be used according to different products, which increases the utilization rate and reliability of the equipment. operability.

The rod connecting shaft 32 is a polygonal shaft, which improves transmission efficiency. The moving part 11 is a linear guide rail, and the slide block moves up and down on the guide rail, which ensures the stability of the slide block motion.

The screw clamp 51 is fixedly connected to the screw clamp 52 through the spring sleeve 36, and the quick disassembly between the screw connection shaft 32 and the screw 51 is realized through the spring sleeve. The clamp 51 and the screw clamp The mouth 52 slides relative to each other, and the screw clamp mouth 52 is firmly installed on the U-shaped clamp 422 .

The screw chuck 52 is equipped with a deep hole sleeve 53, and different sleeves 36 can be selected according to different screw types for locking, which increases the types of locking screws, improves the application range of the equipment, and reduces the production cost.

Working principle of the present invention is:

The screw clamp 52 is used to clamp the screw sent from the pipeline. When the screw needs to be locked, the first cylinder 22 moves to move the first slider 41 downward, and under the action of the spring, the second slider 42 moves downward synchronously. Movement, so that the rotary slide kit 3 drives the batch rod 51 to move downward, and at the same time, the servo motor 21 rotates and drives the batch rod 51 to rotate through the rotary slide kit 3, so that the batch rod 51 moves downward and rotates, and the screw is pushed out of the screw clamp 52 And lock pays on the workpiece, after locking the screw, the first cylinder 22 resets, drives the first slide block 41 to reset simultaneously, and the second cylinder 23 drives the second slide block 42 to reset by the connecting rod 421.

When the screw lock is not put in place, the screw chuck 52 may lift the screw that is not locked when it moves upwards, causing the fault caused by the next action cycle. Block 42 upwards pulls, and this moment, batch bar 51 moves downward relative to second slide block 42, and the screw that is adsorbed on screw clamp mouth 52 is ejected, avoids malfunction when locking next time.

The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a servo intelligent screw locking machine structure, including bracing frame (1), is arranged at the driver element (2) of bracing frame (1), rotates Unit (5) paid by sliding suite (3), sliding unit (4), lock, it is characterised in that support frame as described above (1) is equiped with for slide block The moving member (11) of lower movement, described driver element (2) is fixedly installed in bracing frame (1), and described slide unit (4) is installed on shifting Moving part (11), described rotational slide external member (3) is installed on sliding unit (4), one end of rotational slide external member (3) and driver element (2) connecting, the other end and lock are paid unit (5) and are in transmission connection, and described driver element (2) is connected with sliding unit (4).

A kind of servo intelligent screw locking machine structure, it is characterised in that described driver element (2) includes Servomotor (21), the first cylinder (22), the second cylinder (23) and fixed plate (24), described servomotor (21), the first cylinder (22) and the second cylinder (23) is installed on bracing frame (1) by fixed plate (24).

A kind of servo intelligent screw locking machine structure, it is characterised in that described lock is paid unit (5) and included Criticize bar (51) and screw dop (52), described when screw dop (52) moves up under the effect of the second cylinder (23), institute State batch bar (51) to move down relative to screw dop (52) and ejected by screw.

A kind of servo intelligent screw locking machine structure, it is characterised in that described rotational slide external member (3) Including transmission coupling (31), batch bar connecting shaft (32), electric screwdriver mounting seat (33), rolling bearing (34) and spring housing (36), institute Stating transmission coupling (31) one end to be connected with servomotor (21), the other end is slidably connected with batch bar connecting shaft (32) is corresponding, institute State spring housing (36) and be sheathed on batch bar connecting shaft (32), batch bar connecting shaft (32) and rolling bearing (34) compact siro spinning technology, described rolling Dynamic bearing (34) is fastened on electric screwdriver mounting seat (33).

A kind of servo intelligent screw locking machine structure, it is characterised in that described batch of bar connecting shaft (32) is The axle of flat shaft key groove, splined shaft or polygon shaft, described moving member (11) is line slideway or linear bearing.

A kind of servo intelligent screw locking machine structure, it is characterised in that also include sensor (6), described Sensor (6) is arranged on sliding unit (4), and described sensor (6) is displacement transducer or depth transducer.

A kind of servo intelligent screw locking machine structure, it is characterised in that described sliding unit (4) includes First slide block (41) and the second slide block (42), described first slide block (41) is with the first cylinder (22) by cylinder connection piece (7) even Connecing, described sensor (6) is arranged on the side of the first slide block (41), and the second slide block (42) is equiped with sensing chip (61).

A kind of servo intelligent screw locking machine structure, it is characterised in that described second cylinder (23) connects Have connecting rod (421), connecting rod (421) to be arranged in the first slide block (41) and the second slide block (42), be positioned at the first slide block (41) and Connecting rod (421) between second slide block (42) is arranged with spring, and one end that connecting rod (421) is connected with the second slide block (42) is solid Dingan County is provided with U-shaped chuck (422) equipped with end cap (423), the second slide block (42).

A kind of servo intelligent screw locking machine structure, it is characterised in that described batch of bar (51) is arranged in spiral shell Silk dop (52) is connected by spring housing (36) and batch bar connecting shaft (32) are fixing, and described screw dop (52) is firm is installed on U Type chuck (422).

A kind of servo intelligent screw locking machine structure, it is characterised in that described screw dop (52) is pacified Equipped with deep hole sleeve (53).