Automatic press-fitting machine for stainless steel thin-wall bearing sealing ring

Abstract

The invention relates to the technical field of thin-wall bearing press-fitting, in particular to an automatic stainless steel thin-wall bearing sealing ring press-fitting machine which comprises a base, and a bearing feeding assembly used for conveying thin-wall bearings in the middle at equal intervals and two sealing ring feeding assemblies used for positioning and feeding sealing rings are arranged at the top of the base. The double-station press-fitting assembly is matched with the corresponding sealing ring feeding assembly to grab and press-fit the sealing rings; the bearing feeding assembly can achieve automatic centering and equal-interval conveying of bearings with different diameters, the sealing ring feeding assembly can accurately position sealing rings with different sizes and maintain the axis uniformity, and a special tool does not need to be replaced. The double-station press-fitting assembly can accurately grab sealing rings of multiple specifications, lossless press-fitting is achieved through secondary positioning and arc extrusion, press-fitting of the sealing rings on the two sides is synchronously completed in combination with the automatic turn-over function, and the equipment universality, the press-fitting efficiency and the assembling quality are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of thin-walled bearing press-fitting technology, and in particular to an automatic press-fitting machine for stainless steel thin-walled bearing seals. Background Technology

[0002] Stainless steel thin-walled bearings, with their advantages of light weight, high rotational accuracy, and strong adaptability, are widely used in precision instruments, light industrial machinery, automation equipment, and many other fields. The assembly of the sealing ring is a crucial process in the production of stainless steel thin-walled bearings; its assembly accuracy and sealing performance directly determine the bearing's performance and service life. However, due to the small wall thickness and poor structural rigidity of stainless steel thin-walled bearings, and the wide variety of bearing and matching sealing ring specifications in actual production, existing sealing ring press-fitting equipment suffers from numerous technical drawbacks in practical applications. This makes it difficult to meet the high-precision, automated, and multi-specification press-fitting production requirements of stainless steel thin-walled bearing sealing rings, thus hindering the improvement of production efficiency and product assembly quality.

[0003] In the feeding and positioning process of bearings and seals, the feeding structure of existing press-fitting equipment is mostly designed with fixed dimensions. The bearing conveying mechanism can only match the conveying of thin-walled bearings of a specific diameter, and the seal positioning component can only limit the positioning of a single specification of seal. When facing the processing requirements of bearings and seals of different specifications, it is necessary to disassemble and replace the corresponding conveying and positioning tooling, and repeatedly adjust the positioning reference. The changeover process is cumbersome and time-consuming, which greatly increases production auxiliary time and tooling costs. In addition, in the seal pressing operation, existing equipment mostly adopts a full contact pressing method. During the pressing process, the press head and the end face of the seal are in surface contact extrusion, which can easily cause damage to the inner and outer ring areas of the seal. In some cases, excessive rigid pressure can even cause deformation of the stainless steel thin-walled bearing wall, destroying the original precision of the bearing.

[0004] To address the aforementioned technical shortcomings, a solution is proposed that effectively resolves the pain points of press-fitting multi-specification stainless steel thin-walled bearing seals. The bearing feeding assembly enables automatic centering and equidistant conveying of bearings of different diameters, while the seal feeding assembly accurately positions seals of different sizes and maintains shaft center consistency, eliminating the need for specialized tooling. The dual-station press-fitting assembly precisely grips seals of various specifications, achieving non-destructive press-fitting through secondary positioning and arc extrusion. Combined with an automatic flipping function, it simultaneously completes the press-fitting of seals on both sides, significantly improving equipment versatility, press-fitting efficiency, and assembly quality. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic press-fitting machine for stainless steel thin-walled bearing seals to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: an automatic pressing machine for stainless steel thin-walled bearing seal rings, comprising a base, a bearing feeding assembly for equidistant and centered conveying of thin-walled bearings at the top of the base, two sets of seal ring feeding assemblies for positioning and feeding seal rings, and a dual-station pressing assembly that cooperates with the corresponding seal ring feeding assembly to grip and press seal rings. The dual-station pressing assembly includes two sets of fixed frames, and a rotating seat is rotatably connected to the bottom of the fixed frames. Three sets of adsorption tubes arranged in a circular array are installed at the bottom of the rotating seat, and a pressing rod is located between two adjacent sets of adsorption tubes.

[0007] Preferably, the bearing feeding assembly includes a belt conveyor first fixedly installed on the top of the base. Rotating rods are rotatably connected to both sides of the belt conveyor first, and a turntable and a bevel gear second are fixedly installed at the top and bottom ends of the rotating rods. Multiple feeding rods are fixedly connected to the annular outer wall of the turntable. A dual-axis servo motor is fixedly installed at the bottom of the belt conveyor first, and a bevel gear first that meshes with the bevel gear second is fixedly installed on the output shaft of the dual-axis servo motor.

[0008] Preferably, the sealing ring feeding assembly includes a second belt conveyor fixedly installed on the top of the base. The top of the second belt conveyor is provided with a limit plate, and the limit plate is provided with a V-shaped limit groove and two sets of straight grooves. The second belt conveyor is threaded with locking bolts that pass through the straight grooves.

[0009] Preferably, a movable plate is slidably connected to the top of the base via a slide rail, and a bracket is fixedly connected to the top of the movable plate. A lifting plate, which is fixedly connected to two sets of fixed frames, is installed on the bracket via an electric push rod. A guide rod, which is slidably connected to the bracket, is fixedly installed on the top of the lifting plate. An electric push rod is fixedly connected between the base and the movable plate.

[0010] Preferably, a U-shaped plate is fixedly installed on the lifting plate, a rotary clamping cylinder is fixedly installed on the U-shaped plate, and a V-shaped clamping plate is installed on the gripper of the rotary clamping cylinder.

[0011] Preferably, a servo motor for driving the rotating seat to deflect is installed on the fixed frame by bolts. The rotating seat has six sets of I-shaped slots arranged in a circular array, and I-shaped blocks are slidably connected in the I-shaped slots. The pressing rod is fixedly connected to the bottom of the corresponding I-shaped block, and a universal ball is installed at the bottom of the pressing rod.

[0012] Preferably, the top and bottom ends of the adsorption tube are respectively fixedly connected to a sleeve and an adsorption plate, a sleeve rod is slidably connected inside the sleeve, and the top of the sleeve rod is fixedly connected to a corresponding I-shaped block. A return spring is fixedly connected between the sleeve and the corresponding I-shaped block, and the three sets of adsorption tubes are fixedly connected to the same connecting hose.

[0013] Preferably, each of the three sets of sleeves has a U-shaped spring sheet fixedly connected to its opposite side, and the free end of the spring sheet has an arc-shaped structure.

[0014] Preferably, a second servo motor is bolted inside the rotating base, and a rotating disk is fixedly mounted on the output shaft of the second servo motor. The rotating disk has multiple arc-shaped grooves arranged in a circular array, and a guide pin that is slidably connected to the corresponding arc-shaped groove is fixedly mounted on the top of the I-shaped block.

[0015] The beneficial effects of this invention are as follows:

[0016] (1) The bearing feeding assembly of the present invention drives the two turntables to rotate in opposite directions at the same speed through a dual-axis servo motor. The figure-eight structure formed by the two material feeding rods realizes the automatic centering of thin-walled bearings. It can also adapt to the equal spacing of bearings of different diameters by controlling the speed of the turntable. The sealing ring feeding assembly positions the sealing ring through the V-shaped limiting groove of the adjustable limiting plate. With the help of the locking bolts to adjust the spacing, it can maintain the uniformity of the axis line when positioning sealing rings of different sizes. The combination of the two can complete the precise feeding and centering positioning of stainless steel thin-walled bearings and sealing rings of multiple specifications without the need to change special tooling, thereby improving the universal adaptability of the equipment and reducing the changeover cost and time when pressing multiple specifications of products.

[0017] (2) The dual-station press assembly of the present invention achieves precise gripping by adsorbing the end face of the sealing ring. With the adjustable adsorption tube and press rod driven by the servo motor, it can adapt to the gripping and press of sealing rings of different sizes. During press, the spring sheet first completes the secondary positioning before press of the thin-walled bearing. Then, the universal ball at the bottom of the press rod forms an arc-shaped extrusion path, so that the sealing ring produces a small V-shaped deformation with a concave center, so as to avoid the problem of damage to the pressing caused by the extrusion of the edge of the sealing ring during the overall full press. At the same time, the integrated rotary clamping cylinder and dual-station structure realize the automatic flipping of the bearing, and achieve the automatic pressing of the sealing rings on both sides simultaneously after single-sided press, which greatly improves the pressing efficiency and assembly quality of the stainless steel thin-walled bearing sealing rings. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings;

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the distribution of the bearing feeding assembly and the sealing ring feeding assembly of the present invention;

[0021] Figure 3 This is a schematic diagram of the bearing feeding assembly of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the sealing ring feeding assembly of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the dual-station press-fit assembly of the present invention;

[0024] Figure 6 This is a schematic diagram showing the connection between the adsorption tube, the pressing rod, and the rotating seat of the present invention;

[0025] Figure 7 This is a schematic diagram showing the disassembled adsorption tube, pressing rod, rotating disk, and rotating seat of the present invention.

[0026] Figure 8 This is a schematic diagram showing the disassembly of the sleeve and the sleeve rod of the present invention.

[0027] Legend:

[0028] 1. Base;

[0029] 2. Bearing feeding assembly; 21. Belt conveyor one; 22. Rotating rod; 23. Bevel gear two; 24. Feeding rod; 25. Dual-axis servo motor; 26. Bevel gear one;

[0030] 3. Sealing ring feeding assembly; 31. Belt conveyor II; 32. Limiting plate; 33. V-shaped limiting groove;

[0031] 4. Dual-station press assembly; 41. Fixed frame; 42. Rotating seat; 43. Adsorption tube; 44. Press rod; 45. Moving plate; 46. Bracket; 47. Electric push rod one; 48. Lifting plate; 49. Electric push rod two; 410. Rotary clamping cylinder; 411. V-shaped clamp; 412. Servo motor one; 413. I-shaped block; 414. Universal ball; 415. Sleeve; 416. Sleeve rod; 417. Return spring; 418. Connecting hose; 419. Spring plate; 420. Servo motor two; 421. Rotary disk. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1 - Figure 5 As shown, the following solutions can be used to address the problem of needing to disassemble and replace the corresponding conveying and positioning tooling when processing bearings and seals of different specifications, and the need to repeatedly adjust the positioning reference when pressing thin-walled bearings and seals that can only be matched with specific diameters.

[0034] This embodiment discloses an automatic pressing machine for stainless steel thin-walled bearing seal rings, including a base 1. The top of the base 1 is provided with a bearing feeding assembly 2 for conveying thin-walled bearings at equal intervals and in the center, two sets of seal ring feeding assemblies 3 for positioning and feeding seal rings, and a dual-station pressing assembly 4 that works in conjunction with the corresponding seal ring feeding assemblies 3 to grip and press seal rings. The two sets of seal ring feeding assemblies 3 are distributed on one side of the bearing feeding assembly 2, and the dual-station pressing assembly 4 is mounted above the bearing feeding assembly 2 and the seal ring feeding assembly 3. The positions of the three are precisely corresponding to ensure the continuous connection of feeding, gripping and pressing actions.

[0035] The dual-station pressing assembly 4 includes two sets of fixed frames 41, and a rotating seat 42 is rotatably connected to the bottom of the fixed frames 41. Three sets of adsorption tubes 43 arranged in a ring array are installed at the bottom of the rotating seat 42, and a pressing rod 44 is located between two adjacent sets of adsorption tubes 43. The adsorption tubes 43 and the pressing rod 44 are evenly distributed alternately at the bottom of the rotating seat 42, and the initial installation height of the two has a height difference to ensure the connection between the adsorption gripping and pressing actions.

[0036] The bearing feeding assembly 2 includes a belt conveyor 21 fixedly installed on the top of the base 1. Both sides of the belt conveyor 21 are rotatably connected to rotating rods 22, and the top and bottom ends of the rotating rods 22 are fixedly installed with turntables and bevel gears 23. Multiple feeding rods 24 are fixedly connected to the annular outer wall of the turntable. The surface of the feeding rods 24 is smoothed to avoid scratching the outer wall of the thin-walled bearing. The multiple feeding rods 24 are evenly distributed along the circumference of the turntable. The spacing between adjacent feeding rods 24 is adapted to the diameter of conventional thin-walled bearings. A dual-axis servo motor 25 is fixedly installed at the bottom of the belt conveyor 21, and a bevel gear 26 that meshes with bevel gears 23 is fixedly installed on the output shaft of the dual-axis servo motor 25.

[0037] Thin-walled bearings are placed intermittently on the conveyor belt of belt conveyor 21. During the conveying process of thin-walled bearings by belt conveyor 21, the dual-axis servo motor 25 drives the two bevel gears 26 on both sides to rotate simultaneously. Combined with the meshing of bevel gears 26 and bevel gear 23, the two sets of rotating rods 22 cause the corresponding turntables to rotate slowly in opposite directions and at the same speed. The turntables drive the feeding rods 24 to rotate circumferentially. The corresponding thin-walled bearings enter between the two sets of feeding rods 24 on both sides. Under the conveying drive of belt conveyor 21, the thin-walled bearings are made to contact the feeding rods 24 on both sides of their forward side. There is relative movement between the thin-walled bearings and the conveyor belt of belt conveyor 21, that is, the thin-walled bearings are decelerated and conveyed to assist the equal-spaced distribution of multiple subsequent thin-walled bearings.

[0038] The eight-shaped structure formed by the reverse rotation of the material guide rods 24 on both sides of the bearing causes the thin-walled bearing to be automatically centered and conveyed. After the distance between the ends of the material guide rods 24 on both sides is greater than the diameter of the thin-walled bearing, there is no relative movement between the thin-walled bearing and the conveyor belt of the belt conveyor 21, and the conveyor is conveyed at a uniform speed. By controlling the rotation speed of the two sets of turntables driven by the dual-axis servo motor 25, multiple thin-walled bearings of different diameters are automatically and equally centered and conveyed. After the thin-walled bearing moves to the bottom of the corresponding rotating seat 42, the belt conveyor 21 and the dual-axis servo motor 25 are stopped.

[0039] The bearing feeding assembly 2 is driven by a dual-axis servo motor 25 to rotate the two turntables in opposite directions at the same speed. The figure-eight structure formed by the two side feeding rods 24 enables the automatic centering of thin-walled bearings. Furthermore, the turntable speed can be controlled to adapt to the equal-spacing feeding of bearings of different diameters.

[0040] The sealing ring feeding assembly 3 includes a belt conveyor 21 fixedly installed on the top of the base 1. The structure of the belt conveyor 21 is adapted to the belt conveyor 21. Its conveying speed is adjusted according to the pressing cycle. The top of the belt conveyor 21 is provided with a limit plate 32, and the limit plate 32 is provided with a V-shaped limit groove 33 and two sets of straight grooves. The belt conveyor 21 is threaded with locking bolts that pass through the straight grooves.

[0041] V-shaped limiting groove 33 is opened in the middle of the limiting plate 32, and its groove angle is 90°. It can center and limit the sealing rings of different diameters. The straight groove is opened along the length of the limiting plate 32, providing adjustment and movement space for the locking bolt. The bottom of the locking bolt is fitted with an anti-slip pad. After tightening, the limiting plate 32 can be firmly fixed to the side plate of the belt conveyor 31, ensuring the stability of the positioning. After unlocking, the position of the limiting plate 32 can be flexibly adjusted along the straight groove.

[0042] The sealing rings are placed intermittently on the conveyor belt of the second belt conveyor 31, and the second belt conveyor 31 transports the placed sealing rings intermittently. As the sealing rings move with the conveyor belt of the second belt conveyor 31, they enter the V-shaped limiting groove 33 on the limiting plate 32 for positioning. Then the second belt conveyor 31 is stopped intermittently, and the distance between the limiting plate 32 and the moving plate 45 is adjusted by tightening the locking bolts. This can maintain the uniformity of the axis position of the sealing rings when positioning sealing rings of different sizes, so as to ensure accurate gripping in the future.

[0043] The sealing ring feeding assembly 3 uses an adjustable limiting plate 32 and a V-shaped limiting groove 33 to position the sealing ring. This can maintain the uniformity of the axis line when positioning sealing rings of different sizes. The combination of the two can complete the precise feeding and centering of stainless steel thin-walled bearings and sealing rings of various specifications without changing special tooling, thereby improving the universality of the equipment and reducing the changeover cost and time when pressing multi-specification products.

[0044] A movable plate 45 is slidably connected to the top of the base 1 via a slide rail. A grease groove is provided between the movable plate 45 and the slide rail to ensure the smoothness and accuracy of the sliding of the movable plate 45. Its sliding direction is parallel to the conveying direction of the belt conveyor 21.

[0045] Furthermore, a bracket 46 is fixedly connected to the top of the movable plate 45. A lifting plate 48, which is fixedly connected to two sets of fixed frames 41, is installed on the bracket 46 via an electric push rod 47. A guide rod, which is slidably connected to the bracket 46, is fixedly installed on the top of the lifting plate 48. The guide rod guides and limits the lifting movement of the lifting plate 48 to prevent it from tilting. An electric push rod 49 is fixedly connected between the base 1 and the movable plate 45.

[0046] A U-shaped plate is fixedly installed on the lifting plate 48, and a rotary clamping cylinder 410 is fixedly installed on the U-shaped plate. A V-shaped clamping plate 411 is installed on the jaws of the rotary clamping cylinder 410. A rubber buffer pad is attached to the clamping surface of the V-shaped clamping plate 411, which can ensure the clamping firmness and avoid scratching the thin-walled bearing. When pressing the next thin-walled bearing and the sealing ring, the lifting plate 48 carries the rotary clamping cylinder 410 down synchronously via the U-shaped plate. The rotary clamping cylinder 410 cooperates with the V-shaped clamping plate 411 to clamp the first thin-walled bearing with a sealing ring installed on one side.

[0047] Before the rising and gripping of the sealing ring, and during the process of conveying the bearing and sealing ring to the gripping and pressing station, the electric push rod 47 drives the lifting plate 48 to repeat the lifting motion once to complete the flipping of the thin-walled bearing; by integrating the rotary clamping cylinder 410 and the dual-station structure, the bearing is automatically flipped, and the automatic pressing of the sealing rings on both sides is completed simultaneously after the single-side pressing, thereby improving the pressing efficiency and quality of the stainless steel thin-walled bearing sealing rings.

[0048] Example 2: Please refer to Figure 5 - Figure 8 As shown, the following solutions can be used to address the problem that the full-contact press fitting method can easily cause damage to the inner and outer rings of the sealing ring due to the pressure, and even cause deformation of the stainless steel thin-walled bearing wall due to excessive rigid pressure, thereby compromising the original precision of the bearing.

[0049] In this embodiment, a servo motor 412 for driving the rotating seat 42 to deflect is installed on the fixed frame 41 by bolts. The rotating seat 42 has six sets of I-shaped grooves arranged in a circular array, and I-shaped blocks 413 are slidably connected in the I-shaped grooves. The I-shaped grooves are opened along the radial direction of the rotating seat 42, and their groove walls are polished to reduce sliding friction with the I-shaped blocks 413. The pressing rod 44 is fixedly connected to the bottom of the corresponding I-shaped block 413, and a universal ball 414 is installed at the bottom of the pressing rod 44.

[0050] After the universal ball 414 at the bottom of the pressing rod 44 contacts the end face of the sealing ring, the servo motor 412 drives the rotating seat 42 to carry multiple pressing rods 44 to rotate at the top of the sealing ring. Combined with the point contact between the universal ball 414 and the sealing ring, the arc-shaped extrusion path is formed, which causes the cross-section of the sealing ring to undergo a small V-shaped deformation with a concave center. This helps to embed the inner and outer sides of the sealing ring into the mounting area groove between the inner and outer rings of the thin-walled bearing without damage, so as to avoid damage to the sealing ring caused by the extrusion of the sealing ring edge during overall pressing.

[0051] The top and bottom ends of the adsorption tube 43 are respectively fixedly connected to the sleeve 415 and the adsorption plate. The adsorption plate is made of silicone material and its bottom surface is a concave arc surface that fits with the end face of the sealing ring to ensure the sealing of the negative pressure adsorption. The sleeve 415 is slidably connected to the sleeve rod 416. The cross-section of the sleeve rod 416 is a structure other than a circle to prevent the sleeve 415 from rotating. The top of the sleeve rod 416 is fixedly connected to the corresponding I-shaped block 413.

[0052] A return spring 417 is fixedly connected between the sleeve 415 and the corresponding I-shaped block 413. The return spring 417 is sleeved on the outside of the sleeve rod 416, and its two ends abut against the top of the sleeve 415 and the bottom of the I-shaped block 413 respectively. In its natural state, it is in a slightly extended state to ensure the initial height of the adsorption plate. During pressing, it can be compressed as the sleeve 415 moves upward to provide buffer force. The three sets of adsorption tubes 43 are fixedly connected to the same connecting hose 418.

[0053] Electric push rod 49 pushes the moving plate 45 to carry two sets of rotating seats 42 to move horizontally, so that the rotating seats 42 are directly above the corresponding positioned sealing ring. Electric push rod 47 pushes the lifting plate 48 to carry two sets of fixed frames 41 to move downward. The three sets of adsorption plates under the rotating seats 42 contact the sealing ring. The connecting hose 418 is connected to the external negative pressure adsorption equipment, which causes the adsorption tube 43 to adsorb and grab the end face of the sealing ring. Electric push rod 47 drives the grabbed sealing ring to rise, and then electric push rod 49 causes the sealing ring to move to directly above the thin-walled bearing.

[0054] Each of the three sets of sleeves 415 has a fixedly connected U-shaped spring plate 419 on its opposite side, and the free end of the spring plate 419 has an arc-shaped structure. The electric push rod 47 drives the gripping sealing ring to move downward. The opposite sides of the U-shaped spring plates 419 on the three sets of sleeves 415 contact the thin-walled bearing below. The inclined section of the spring plate 419 abuts against the thin-walled bearing, causing the thin-walled bearing to be centered and positioned for the second time. Then, the arc-shaped section at the bottom of the spring plate 419 abuts against the conveyor belt of the belt conveyor 21, causing it to expand outward. The sealing ring that is assisted in gripping is placed in the installation area between the inner and outer rings of the thin-walled bearing, completing the secondary positioning of the thin-walled bearing before press-fitting.

[0055] The rotating base 42 is equipped with a second servo motor 420 by bolts, and a rotating disk 421 is fixedly installed on the output shaft of the second servo motor 420. The rotating disk 421 has multiple arc-shaped grooves arranged in a ring array. The top of the I-shaped block 413 is fixedly equipped with a guide pin that is slidably connected to the corresponding arc-shaped groove.

[0056] When gripping seals of different sizes, servo motor 420 drives the rotating disk 421 to deflect in the forward or reverse direction. Combined with the guidance of the arc groove and the corresponding guide pin, multiple I-shaped blocks 413 carry the corresponding pressing rods 44 and move relative to or away from the adsorption tube 43, thereby completing the precise gripping of seals of different sizes. At the same time, combined with the dual-station structure, the automated pressing of seals on both sides is completed simultaneously after single-sided pressing, which greatly improves the pressing efficiency and assembly quality of stainless steel thin-walled bearing seals.

[0057] Example 3: Please refer to Figure 1 - Figure 8 As shown, the present invention also proposes a method for using an automatic press-fitting machine for stainless steel thin-walled bearing seals, comprising the following steps:

[0058] Step 1: Thin-walled bearings are placed intermittently on the conveyor belt of belt conveyor 21. During the conveying process of thin-walled bearings by belt conveyor 21, the dual-axis servo motor 25 drives the two bevel gears 26 on both sides to rotate simultaneously. Combined with the meshing of bevel gears 26 and bevel gear 23, the two sets of rotating rods 22 cause the corresponding turntables to rotate slowly in opposite directions and at the same speed. The turntables drive the feeding rods 24 to rotate circumferentially. The corresponding thin-walled bearings enter between the two sets of feeding rods 24 on both sides. Under the conveying drive of belt conveyor 21, the thin-walled bearings are made to contact the feeding rods 24 on both sides of their forward side. There is relative movement between the thin-walled bearings and the conveyor belt of belt conveyor 21, that is, the thin-walled bearings are conveyed at a reduced speed.

[0059] The eight-shaped structure formed by the reverse rotation of the two side material guide rods 24 causes the thin-walled bearing to be automatically centered and conveyed. After the end distance of the two side material guide rods 24 is greater than the diameter of the thin-walled bearing, there is no relative movement between the thin-walled bearing and the conveyor belt of the belt conveyor 21, and the conveyor is conveyed at a uniform speed. By controlling the rotation speed of the two sets of turntables driven by the dual-axis servo motor 25, multiple thin-walled bearings of different diameters are automatically centered and conveyed at equal intervals. After the thin-walled bearing moves to the bottom of the corresponding rotating seat 42, the belt conveyor 21 and the dual-axis servo motor 25 are stopped.

[0060] Step 2: The sealing rings are placed intermittently on the conveyor belt of belt conveyor 2 31, and the sealing rings are conveyed intermittently by belt conveyor 2 31. As the sealing rings move with the conveyor belt of belt conveyor 2 31, they enter the V-shaped limiting groove 33 on the limiting plate 32 for positioning. Then, belt conveyor 2 31 is stopped intermittently. By tightening the locking bolts, the distance between the limiting plate 32 and the moving plate 45 is adjusted. This can maintain the uniformity of the axis position of the sealing rings when positioning sealing rings of different sizes, so as to ensure accurate gripping in the future.

[0061] Step 3: Electric push rod 2 49 pushes the moving plate 45 to carry the two sets of rotating seats 42 to move horizontally, so that the rotating seats 42 are directly above the corresponding positioned sealing ring. Electric push rod 1 47 pushes the lifting plate 48 to carry the two sets of fixed frames 41 to move downward. The three sets of adsorption plates under the rotating seats 42 contact the sealing ring. The connecting hose 418 is connected to the external negative pressure adsorption equipment, so that the adsorption tube 43 adsorbs and grabs the end face of the sealing ring. Electric push rod 1 47 drives the grabbed sealing ring to rise, and then electric push rod 2 49 causes the sealing ring to move to directly above the thin-walled bearing.

[0062] Step 4: The electric push rod 47 drives the gripping sealing ring to descend. The opposite sides of the A-shaped spring plates 419 on the three sets of sleeves 415 contact the thin-walled bearing below. The inclined section of the spring plate 419 abuts against the thin-walled bearing, causing the thin-walled bearing to be centered and positioned again. Then, the arc-shaped section at the bottom of the spring plate 419 abuts against the conveyor belt of the belt conveyor 21, causing it to expand outward. The gripping sealing ring is placed in the installation area between the inner and outer rings of the thin-walled bearing. Subsequently, the sleeve 415 and the sleeve rod 416 slide relative to each other, compressing the return spring 417, causing the universal ball 414 at the bottom of the press rod 44 to abut against the end face of the sealing ring.

[0063] When gripping sealing rings of different sizes, servo motor 420 drives the rotating disk 421 to deflect in the forward or reverse direction. Combined with the guidance of the arc groove and the corresponding guide pin, multiple I-shaped blocks 413 carry the corresponding pressing rods 44 and move relative to or away from the adsorption tube 43, thereby completing the precise gripping of sealing rings of different sizes.

[0064] Step 5: After the universal ball 414 at the bottom of the pressing rod 44 contacts the end face of the sealing ring, the servo motor 412 drives the rotating seat 42 to carry multiple pressing rods 44 to rotate at the top of the sealing ring. Combined with the point contact between the universal ball 414 and the sealing ring, the arc-shaped extrusion path formed causes the cross-section of the sealing ring to undergo a small V-shaped deformation with a concave center, which helps the inner and outer sides of the sealing ring to be embedded into the mounting area groove between the inner and outer rings of the thin-walled bearing without damage.

[0065] When repeating the above operation to press-fit the next thin-walled bearing and seal ring, the lifting plate 48 is carried by the U-shaped plate and the rotating clamping cylinder 410 descends synchronously. The rotating clamping cylinder 410, together with the V-shaped clamping plate 411, clamps the first thin-walled bearing with a seal ring installed on one side. Before the seal ring is picked up and during the process of the bearing and seal ring being transported to the picking and pressing station, the electric push rod 47 drives the lifting plate 48 to repeat the lifting motion once to complete the flipping of the thin-walled bearing. Then, the two sets of seal rings are picked up synchronously by the dual-station pressing assembly 4 to complete the pressing process of the seal rings on both sides of the thin-walled bearing.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic press-fitting machine for stainless steel thin-walled bearing seals, comprising a base (1), characterized in that, The base (1) is provided with a bearing feeding assembly (2) for conveying thin-walled bearings at equal intervals and in the center, two sets of sealing ring feeding assemblies (3) for positioning and feeding sealing rings, and a dual-station pressing assembly (4) for gripping and pressing sealing rings in cooperation with the corresponding sealing ring feeding assembly (3). The dual-station pressing assembly (4) includes two sets of fixed frames (41), and a rotating seat (42) is rotatably connected to the bottom of the fixed frame (41). The bottom of the rotating seat (42) is equipped with three sets of adsorption tubes (43) arranged in a ring array, and a pressing rod (44) located between two adjacent sets of adsorption tubes (43).

2. The automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 1, characterized in that, The bearing feeding assembly (2) includes a belt conveyor (21) fixedly installed on the top of the base (1). Both sides of the belt conveyor (21) are rotatably connected to rotating rods (22), and both the top and bottom ends of the rotating rods (22) are fixedly installed with a turntable and a bevel gear (23). Multiple feeding rods (24) are fixedly connected to the annular outer wall of the turntable. A dual-axis servo motor (25) is fixedly installed at the bottom of the belt conveyor (21), and a bevel gear (26) meshing with the bevel gear (23) is fixedly installed on the output shaft of the dual-axis servo motor (25).

3. The automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 1, characterized in that, The sealing ring feeding assembly (3) includes a belt conveyor (31) fixedly installed on the top of the base (1). The top of the belt conveyor (31) is provided with a limiting plate (32), and the limiting plate (32) is provided with a V-shaped limiting groove (33) and two sets of straight grooves. The belt conveyor (31) is threaded with a locking bolt that passes through the straight groove.

4. The automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 1, characterized in that, The top of the base (1) is slidably connected to a movable plate (45) via a slide rail, and the top of the movable plate (45) is fixedly connected to a bracket (46). The bracket (46) is equipped with a lifting plate (48) fixedly connected to two sets of fixed frames (41) via an electric push rod (47). The top of the lifting plate (48) is fixedly installed with a guide rod slidably connected to the bracket (46). The base (1) and the movable plate (45) are fixedly connected to an electric push rod (49).

5. An automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 4, characterized in that, A U-shaped plate is fixedly installed on the lifting plate (48), and a rotary clamping cylinder (410) is fixedly installed on the U-shaped plate. A V-shaped clamping plate (411) is installed on the jaws of the rotary clamping cylinder (410).

6. The automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 1, characterized in that, A servo motor (412) for driving the rotating seat (42) to deflect is installed on the fixed frame (41) by bolts. The rotating seat (42) has six sets of I-shaped slots arranged in a ring array, and I-shaped blocks (413) are slidably connected in the I-shaped slots. The pressing rod (44) is fixedly connected to the bottom of the corresponding I-shaped block (413), and a universal ball (414) is installed at the bottom of the pressing rod (44).

7. An automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 6, characterized in that, The top and bottom ends of the adsorption tube (43) are respectively fixedly connected to a sleeve (415) and an adsorption plate. The sleeve (415) is slidably connected to a rod (416), and the top of the rod (416) is fixedly connected to the corresponding I-shaped block (413). A return spring (417) is fixedly connected between the sleeve (415) and the corresponding I-shaped block (413). The three sets of adsorption tubes (43) are fixedly connected to the same connecting hose (418).

8. An automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 7, characterized in that, The three sets of sleeves (415) are all fixedly connected to a F-shaped spring plate (419) on the opposite side, and the free end of the spring plate (419) has an arc-shaped structure.

9. An automatic press-fitting machine for stainless steel thin-walled bearing seals according to claim 6, characterized in that, The rotating seat (42) is equipped with a second servo motor (420) by bolts, and a rotating disk (421) is fixedly installed on the output shaft of the second servo motor (420). The rotating disk (421) has multiple arc-shaped grooves arranged in a ring array. The top of the I-shaped block (413) is fixedly equipped with a guide pin that is slidably connected to the corresponding arc-shaped groove.

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