Holder pressing device of bearing

Abstract

The utility model relates to a retainer pressing device of a bearing, which is improved on the basis of an existing rack, a base assembly gathering die, a ball distributing die, a retainer pressing die and the like, namely, a rolling body equal detection station located between a ball distributing station and a retainer pressing station is further arranged on the rack, and a corresponding fourth base is additionally arranged. The fourth base comprises a central spindle, a spring arranged on the central spindle in a sleeved mode and a floating sleeve arranged on the central spindle in a sleeved mode and connected with the upper end of the spring in an abutting mode, and a plurality of grooves are sequentially and evenly formed in the edge of the upper end of the floating sleeve in the circumferential direction, wherein the number of the grooves is matched with that of the rolling bodies on the sleeving piece, and the corresponding rolling bodies can be located in the grooves. A first proximity switch and a second proximity switch which can detect the position of the assembly piece on the fourth base are arranged on the two sides of the floating sleeve respectively, the first proximity switch and the second proximity switch are connected with the input end of a controller, and the controller can control the retainer pressing die to work according to signals of the first proximity switch and the second proximity switch. By adopting the structure, the retainer can be effectively prevented from being damaged when being pressed in.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bearing's assembly equipment, specifically points to a kind of bearing's press cage device. BACKGROUND

[0002] Cage is a kind of bearing part for guiding the rolling body (steel ball or steel ball) in bearing and keeping the rolling body between the inner and outer rings of bearing. It can be divided into metal cage and non-metal cage according to material, wherein non-metal cage, such as nylon engineering plastic cage, is widely used in chemical machinery due to its light weight, low noise, corrosion resistance and good elasticity.

[0003] In the production of the above-mentioned bearing with non-metallic cage, after the inner and outer rings and the rolling body of the bearing are sleeved (for the convenience of description, the three parts after the sleeve are called sleeve parts), the sleeve parts need to pass through the gathering station and the ball distributing station before the process of installing the non-metallic cage (hereinafter referred to as cage). That is, at the gathering station, the scattered rolling body in the sleeve part is concentrated on one side by using a gathering die; then at the ball distributing station, the rolling body is uniformly distributed in the circumferential direction with the help of a ball distributing die; then the cage is pressed into the sleeve part with uniformly distributed rolling body. In order to ensure smooth installation, a ball checking station can be set before the installation of the cage to detect whether the number of rolling bodies is correct, and a cage checking station can be set after the installation of the cage to detect whether the height of the cage meets the requirements of the bearing. Such a cage pressing device is disclosed in the document with the Chinese patent authorized publication number CN211924750U. In this assembly process, a base assembly connected with the first driving member is also needed to carry the sleeve part, so as to transport the sleeve part to each station.

[0004] At present, the base assembly includes a plurality of bases connected with the second driving mechanism and capable of moving up and down synchronously. Each base moves horizontally between adjacent stations under the action of the first driving member. Among them, the base has the structure of die seat sleeve base in the above-mentioned document, and also has the structure of lower die seat in the Chinese patent authorized publication number CN103406285B. Although such a base assembly can realize the transportation of the sleeve part, the following defects are found in actual production: during the movement of the base, the rolling body will move and change, so that the cage will be damaged when pressing the cage, which will affect the qualified rate of the product. If the damaged cage is not detected in time in the subsequent process, the bearing will flow into the market and cause customer complaints, thereby affecting the reputation of the manufacturer.

[0005] To this end, people in the process of moving the assembly after the conventional ball, the use of tooling down the outer ring to meet each rolling body, to ensure that the rolling body is not displaced, such as the Chinese patent authorized by the announcement number CN214604100U document disclosed such a tool. But even by holding the outer ring to achieve the purpose of rolling body not displacement, also can not guarantee that the rolling body is in uniform state when the cage is pressed. Practical new type content

[0006] The technical problem to be solved by the present utility model is to provide a cage pressing device capable of avoiding damage to the bearing when the cage is pressed.

[0007] The technical scheme adopted by the present utility model to solve the above technical problem is: a cage pressing device, comprising a rack with a gathering station capable of placing an assembly, a ball separating station, a cage pressing station, a base assembly capable of moving horizontally and connected with a first driving element, a gathering die capable of gathering all rolling bodies in the assembly at the gathering station, a ball separating die capable of separating the rolling bodies gathered together in the assembly at the ball separating station into a uniform state, and a cage pressing die capable of pressing the cage into the assembly in which the rolling bodies have been uniformly distributed, wherein the base assembly further comprises a first base, a second base and a fifth base capable of moving up and down synchronously and connected with a second driving element, the first base is used to move the upstream assembly to the gathering station, the second base is used to move the assembly from the gathering station to the ball separating station, and the fifth base is used to move the assembly at the cage pressing station to the downstream, characterized in that: the rack is further provided with a rolling body uniformity detection station between the ball separating station and the cage pressing station, and the base assembly further comprises a third base and a fourth base capable of moving up and down synchronously and distributed in a straight line and uniformly spaced from the first base, the second base and the fifth base, the third base is used to move the assembly from the ball separating station to the rolling body uniformity detection station, and the fourth base is used to move the assembly from the rolling body uniformity detection station to the cage pressing station, wherein the fourth base comprises a mandrel, a spring sleeved on the mandrel, and a floating sleeve sleeved on the mandrel and abutting against the upper end of the spring, a plurality of grooves matching the number of rolling bodies on the assembly and capable of allowing the corresponding rolling bodies to sit are uniformly and sequentially provided on the upper end edge of the floating sleeve in the circumferential direction, and a first proximity switch and a second proximity switch capable of detecting the position of the assembly on the fourth base are arranged on both sides of the floating sleeve, the first and second proximity switches are connected with the input end of a controller, and the controller can control the work of the cage pressing die according to the signals of the first and second proximity switches.

[0008] Further improvement of the above scheme is that the shaft sleeve is further sleeved on the mandrel and fixed with the mandrel, the spring and the floating sleeve are located between the shaft sleeve and the mandrel, and the floating sleeve is movably constrained to the shaft sleeve, so that the floating sleeve is more stable in up and down movement.

[0009] More practically, the two side walls of the floating sleeve are correspondingly provided with axially extending long holes, and the shaft sleeve is fixed with a guide column which can be inserted into the corresponding long hole at the corresponding long hole, so as to facilitate processing and assembly. However, more preferably, the mandrel is provided with a radially extending channel opposite to the long hole, and the two side walls of the shaft sleeve are respectively provided with a through hole opposite to the channel, and a bolt is exposed outside the shaft sleeve at both ends of the through hole, long hole and channel, which forms the guide column.

[0010] Preferably, the rack has two L-shaped guide rails spaced apart and opposite for the sleeve assembly to be seated, and the shaft sleeve can be lifted and lowered between the two guide rails, so as to facilitate the movement of the sleeve assembly on the rack as needed and can be conveniently placed on the rack at the corresponding work location.

[0011] More preferably, the upper end of the shaft sleeve is further provided with a notch between the two through holes. The addition of the notch can prevent the shaft sleeve from interfering with the two guide rails when the shaft sleeve is inserted between the two guide rails, and can reduce the friction between the shaft sleeve and the floating sleeve, and is beneficial to the overall strength of the shaft sleeve.

[0012] When the rolling elements in the sleeve assembly are not evenly distributed, in order to more reliably obtain this information, further improvement is that the spring is in a natural state, the upper end of the mandrel is higher than the upper end of the floating sleeve and can be inserted into the inner ring of the sleeve assembly, so that when the sleeve assembly with unevenly distributed rolling elements falls, the upper end of the mandrel is inserted into the inner ring of the sleeve assembly and is abutted by the unevenly distributed rolling elements, thereby preventing the sleeve assembly from continuing to fall, so that the first and second proximity switches do not detect the sleeve assembly, and the signal to the controller does not occur.

[0013] In order to prevent the sleeve assembly from moving excessively on the floating sleeve, the outer side wall of the mandrel has a step which abuts against the lower end surface of the inner ring of the sleeve assembly.

[0014] In the above schemes, the third base can have the same structure as the first base, the second base and the fifth base.

[0015] Compared with the prior art, since the upper end edge of the floating sleeve is circumferentially uniformly distributed with a plurality of grooves corresponding to the number of rolling bodies on the sleeve assembly, when the fourth base is raised to carry the sleeve assembly moved from the ball separating station, if the rolling bodies on the sleeve assembly are uniformly distributed at this time, each rolling body can be seated in the corresponding groove, at this time, the sleeve assembly on the floating sleeve will be placed horizontally at the normal height, the first and second proximity switches on both sides will send signals to the controller, and the controller will control the pressing holder mold to act, and the holder will be smoothly pressed into the sleeve assembly. Conversely, when the rolling bodies in the sleeve assembly are not uniformly distributed, the non-uniformly distributed rolling bodies cannot be seated in the corresponding grooves, resulting in that the sleeve assembly on the floating sleeve is in an inclined or other abnormal state, at this time, at least one proximity switch will not send a signal to the controller, and the controller will instruct the pressing holder mold not to start, thereby preventing the holder from being pressed into the sleeve assembly with non-uniformly distributed rolling bodies, and further effectively preventing the damage of the holder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of an embodiment of the utility model;

[0017] Figure 2 is Figure 1 is a three-dimensional schematic view after removing the rack, the gathering mold, the ball separating mold and the pressing holder mold;

[0018] Figure 3 is Figure 2 is a three-dimensional schematic view after the five bases are moved upward;

[0019] Figure 4 is Figure 1 is a three-dimensional exploded schematic view of the fourth base;

[0020] Figure 5 is Figure 2 is a sectional view after the fourth base is horizontally seated on the sleeve assembly;

[0021] Figure 6 is Figure 5 is a sectional view when the rolling bodies on the sleeve assembly are not uniformly distributed;

[0022] Figure 7 is a front view of another embodiment of the fourth base with the sleeve assembly (the top of the mandrel is not inserted into the inner circle of the sleeve assembly, and the dotted line is the state when the rolling bodies are not uniformly distributed). DETAILED DESCRIPTION

[0023] The utility model will be further described in detail below in combination with the embodiment of the drawings.

[0024] In the following description of the embodiments, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "axial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, since the embodiments disclosed in the present application can be arranged in different directions, so these directional terms are only as an illustration and should not be regarded as a limitation, such as "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first", "second" can be explicitly or implicitly included one or more features.

[0025] As Figures 1 to 6 shown, the bearing press cage device comprises a frame 10, a gathering die 20, a ball separating die 30, a press cage die 40 and a base assembly 60 connected with the first driving member 50 and capable of horizontal movement, wherein the frame 10 is provided with two oppositely spaced L-shaped guide rails 70, the guide rails 70 are uniformly provided with gathering stations A, ball separating stations B, rolling element equalizing detection stations C and press cage stations D from right to left (or from left to right) along the length direction thereof, and each sleeve assembly 100 can be seated and placed on the two guide rails 70 (see Figure 2 and Figure 3 ). The base assembly 60 is located below each station, which can carry the sleeve assembly 100 and move along the guide rails 70 between two adjacent stations in the downstream direction (indicated by the arrow in Figure 2 ) under the action of the first driving member 50.

[0026] The gathering die 20, the ball separating die 30 and the press cage die 40 all adopt the prior art, and their arrangement mode also adopts the prior art, that is, the gathering die 20 is used to gather all the rolling elements on the sleeve assembly 100 together. The ball separating die 30 is used to separate the rolling elements gathered together in the sleeve assembly 100 into an evenly distributed state. The press cage die 40 is used to press the cage into the sleeve assembly in which the rolling elements have been evenly distributed, so as to complete the press fitting work of the cage.

[0027] The main improvement in this embodiment is that a rolling body equal detection station C is added to the rack 10, which is located between the ball separating station B and the cage pressing station D. Therefore, the above-mentioned base assembly 60 is also improved accordingly, that is, the base assembly 60 comprises a first base la, a second base lb, a third base lc, a fourth base ld and a fifth base le which are connected with the second driving member 80 and can move up and down synchronously, wherein the first base la is used to move the sleeve assembly 100 from upstream to the gathering station A, the second base lb is used to move the sleeve assembly 100 from the gathering station A to the ball separating station B, the third base lc is used to move the sleeve assembly 100 from the ball separating station B to the rolling body equal detection station C, the fourth base ld is used to move the sleeve assembly 100 from the rolling body equal detection station C to the cage pressing station D, and the fifth base le is used to move the sleeve assembly 100 from the cage pressing station D to downstream, wherein the first base la, the second base lb, the third base lc and the fifth base le can adopt the base structure in the prior art, such as the structure of the lower die seat in the above-mentioned Chinese patent with the publication number CN103406285B, and of course other base structures in the prior art can also be adopted. In this embodiment, the fourth base ld comprises a mandrel 2, a spring 3 sleeved on the mandrel 2, and a floating sleeve 4 sleeved on the mandrel 2 and abutting against the upper end of the spring 3, wherein the upper end edge of the floating sleeve 4 is uniformly provided with a plurality of grooves 41 which are matched with the number of rolling bodies on the sleeve assembly 100 and can be seated by the corresponding rolling bodies in the circumferential direction, and a first proximity switch 5a and a second proximity switch 5b which can detect the position of the sleeve assembly on the fourth base are arranged on both sides of the floating sleeve 4 respectively, and the first and second proximity switches are connected with the input end of the controller, and the output end of the controller can control the working of the cage pressing die 40 according to the signals of the first and second proximity switches.

[0028] In order to ensure that the floating sleeve 4 can move up and down stably, an axle sleeve 6 which is fixed with the mandrel 2 and can be penetrated between the two guide rails is further sleeved on the mandrel 2, and the fixing manner can be as follows Figure 5As shown, the shaft sleeve 6 is fixed to the mandrel 2 by two bolts 7a. The spring 3 and the floating sleeve 4 are located between the shaft sleeve 6 and the mandrel 2, and the floating sleeve 4 is movably constrained to the shaft sleeve 6. Specifically, the floating sleeve 4 has two axially extending long holes 42 on its two side walls, and the shaft sleeve 6 has a guide post fixed to each long hole, which can be a threaded bolt screwed into a threaded hole in the side wall of the shaft sleeve 6. That is, there are two threaded bolts, each screwed into a corresponding threaded hole, so that the inner ends of the two threaded bolts can be inserted into the corresponding long holes 42 to guide and constrain the floating sleeve 4. However, in order to facilitate assembly and ensure the consistency of the position of the floating sleeve 4, the mandrel 2 has a radial channel 21 extending from the upper end of the mandrel 2 and opposite the long holes, and the shaft sleeve 6 has a through hole 61 opposite the channel 21 on each side wall. A bolt 7b is inserted into the through hole 61, the long hole 42, and the channel 21, and the two ends of the bolt 7b are exposed outside the shaft sleeve 6 and positioned by nuts, so that the bolt 7b forms the guide post.

[0029] In order to reduce the friction when the floating sleeve 4 moves up and down, the shaft sleeve 6 has a notch 62 between the two through holes 61 on its upper end, which can extend downward below the through holes 61 to reduce the friction of the floating sleeve 4 as much as possible while ensuring the strength of the shaft sleeve 6. Meanwhile, the notch 62 also facilitates the insertion of the fourth base 1d between the two guide rails and allows the fourth base 1d to support the combined sleeve 100 on the guide rails.

[0030] When the rolling elements in the combined sleeve are not evenly distributed, in order to allow the first and second switches to reliably capture this information, the mandrel 2 is further improved in this embodiment. When the spring 3 is in a natural state, the upper end of the mandrel 2 is higher than the upper end of the floating sleeve 4 and can be inserted into the inner ring of the combined sleeve 100. When the combined sleeve 100 with unevenly distributed rolling elements is located above the mandrel 2, the fourth base 1c moves up under the action of the second driving member 80, and the upper end of the mandrel 2 is first inserted into the inner ring of the combined sleeve 100. Then, when the unevenly distributed rolling elements contact the upper end of the floating sleeve 4, they are blocked (see Figure 6 ), preventing the combined sleeve 100 from falling relative to the mandrel 2. At this time, neither the first proximity switch nor the second proximity switch is actuated, thereby more reliably ensuring that the retainer is not pressed in.

[0031] In order to prevent the combined sleeve 100 from moving down excessively, the outer side wall of the mandrel 2 has a step 22 that abuts against the lower end surface of the inner ring of the combined sleeve, as shown in Figure 5 .

[0032] The first base 1a, the second base 1b, the third base 1c, the fourth base 1d and the fifth base 1e are distributed in a straight line and fixed on a base plate 8 at equal intervals, the base plate 8 is fixed on the piston rod of a lifting cylinder, the lifting cylinder is the second driving member 80. The cylinder body of the lifting cylinder is further fixed on a sliding plate 9a, the sliding plate 9a slides on the sliding rail 9b through a sliding block, the first driving member 50 is a translation cylinder, the piston rod of the translation cylinder extends horizontally in the direction of the assembly movement, the sliding plate 9a is fixed on the piston rod of the translation cylinder, thus the five bases on the base plate 8 can be moved horizontally synchronously with the action of the translation cylinder, and the five bases can be lifted synchronously with the action of the lifting cylinder. The first proximity switch 5a and the second proximity switch 5b can be installed on the base plate 8, and the gathering die 20 and the ball separating die 30 can be supported on the base plate 8.

[0033] In operation, the translation cylinder is actuated, the first base is below the assembly coming from upstream, at this time, the second base is below the gathering station, the third base is below the ball separating station, the fourth base is below the equal distribution detection station of the rolling element, and the fifth base is below the retainer pressing station. Then, under the action of the lifting cylinder, the five bases are moved upward synchronously, the upper end of each base extends into the two guide rails to carry the assembly on the corresponding station, and the assembly on each station is moved to the next station under the pulling of the translation cylinder. In this process, the gathering die, the ball separating die and the retainer pressing die are actuated to perform the gathering, ball separating and retainer pressing of the rolling element, and the fifth base moves the assembly with the pressed retainer to downstream. Then, the second driving member 80 moves the bases downward synchronously to separate from the assemblies, and then the translation cylinder is actuated, and the operation of pressing the retainer is repeated.

[0034] In the above process, when the fourth base is moved upward, if the assembly with the equal distribution of the rolling element is encountered, at this time, the rolling elements are seated in the grooves of the floating sleeve, the upper end of the mandrel is inserted into the inner ring of the assembly, the assembly is horizontally sleeved on the mandrel, the lower end surface of the inner ring of the assembly is placed on the step of the mandrel, and the lower end surface of the outer ring is placed on the upper end surface of the sleeve, please refer to Figure 5 At this time, the first proximity switch and the second proximity switch are actuated to send signals to the controller, and the controller controls the retainer pressing die to perform the operation of pressing the retainer on the assembly moved to the retainer pressing station D. In the process of pressing the retainer into the retainer pressing die, the floating sleeve is driven downward under the pressure and is compressed, that is, the floating sleeve is separated from the rolling element to allow the rolling element to enter the spherical pocket of the retainer. If the fourth base encounters the assembly with the uneven distribution of the rolling element at the equal distribution detection station C, at this time, the assembly is not completely lowered, that is, it is higher than the normal position of the floating sleeve (such as Figure 6 ), or it is in an inclined state (such as Figure 7When the core shaft is inserted into the inner ring of the sleeve assembly (as shown by the solid line) and the top of the core shaft is not inserted into the inner ring of the sleeve assembly (as shown by the dotted line), both of the first and second proximity switches are not actuated or only one of the proximity switches is not actuated, and the controller controls the press retainer mold to not act on the sleeve assembly, i.e., the press retainer mold does not act on the sleeve assembly with uneven distribution of the rolling elements, so that damage to the retainer can be effectively avoided.

Claims

1. A bearing cage pressing device, comprising a frame (10) with a gathering station (A) capable of placing a sleeve assembly (100), a ball separating station (B), a cage pressing station (D), a base assembly (60) capable of horizontal movement connected with a first driving element (50), a gathering die (20) capable of gathering all the rolling elements in the sleeve assembly at the gathering station, a ball separating die (30) capable of separating the gathered rolling elements in the sleeve assembly at the ball separating station into an even distribution, and a cage pressing die (40) capable of pressing the cage into the sleeve assembly in which the rolling elements have been evenly distributed, the base assembly further comprising a first base (la) capable of synchronous up and down movement connected with a second driving element (80), a second base (lb) and a fifth base (le), the first base (la) being used to move the upstream sleeve assembly to the gathering station, the second base (lb) being used to move the sleeve assembly from the gathering station to the ball separating station, and the fifth base (le) being used to move the sleeve assembly at the cage pressing station to the downstream, characterized in that: The rack is further provided with a rolling body equalization detection station (C) between the ball separating station and the press holder station, and the base assembly further comprises a third base (1c) and a fourth base (1d) which are linearly and uniformly spaced from the first base, the second base and the fifth base and can move up and down synchronously, the third base (1c) is used to move the assembled sleeve from the ball separating station to the rolling body equalization detection station, and the fourth base (1d) is used to move the assembled sleeve from the rolling body equalization detection station to the press holder station, wherein the fourth base (1d) comprises a mandrel (2), a spring (3) sleeved on the mandrel and a floating sleeve (4) sleeved on the mandrel and abutting against the upper end of the spring, the upper edge of the floating sleeve (4) is circumferentially and uniformly provided with a plurality of grooves (41) which are matched with the number of rolling bodies on the assembled sleeve and can accommodate the corresponding rolling bodies, and a first proximity switch (5a) and a second proximity switch (5b) are arranged on the two sides of the floating sleeve (4) respectively to detect the position of the assembled sleeve on the fourth base, the first and second proximity switches are connected with the input end of a controller, and the controller can control the operation of the press holder die (40) according to the signals of the first and second proximity switches.

2. A retaining cage device for a bearing according to claim 1, characterized in that: The mandrel (2) is further sleeved with a sleeve (6) which is fixed with the mandrel, the spring (3) and the floating sleeve (4) are located between the sleeve and the mandrel, and the floating sleeve (4) can move up and down and is constrained in the sleeve (6).

3. A retaining cage device for a bearing according to claim 2, characterised in that: Corresponding long holes (42) are formed in the two side walls of the floating sleeve (4), and a guide column is fixed on the sleeve (6) at the positions corresponding to the long holes and can be inserted into the corresponding long holes (42).

4. A retaining cage device for a bearing according to claim 3, characterised in that: A channel (21) extending radially and opposite to the long holes is formed in the mandrel (2), and a through hole (61) opposite to the channel is formed in the two side walls of the sleeve (6), and a bolt (7b) is exposed outside the sleeve (6) after being inserted into the through hole (61), the long holes (42) and the channel (21), and the bolt (7b) forms the guide column.

5. The retaining cage device of a bearing according to claim 2, characterized in that: The rack has two guide rails (70) with L-shaped cross sections which are spaced apart and opposite to each other and are used to accommodate the assembled sleeve, and the sleeve (6) can move up and down between the two guide rails (70).

6. The retaining cage device of a bearing according to claim 4, characterized in that: A notch (62) is formed in the upper edge of the sleeve (6) between the two through holes.

7. A retaining cage device for a bearing according to any one of claims 1 to 6, characterised in that: In the natural state of the spring (3), the upper end of the mandrel (2) is higher than the upper end of the floating sleeve (4) and can be inserted into the inner ring of the assembled sleeve.

8. A retaining cage device for a bearing according to claim 7, characterised in that: The outer side wall of the mandrel (2) has a step (22) which is used to abut against the lower end surface of the inner ring of the assembled sleeve.

9. A retaining cage assembly for a bearing according to any one of claims 1 to 6, wherein: The third base has the same structure as the first base, the second base and the fifth base.

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