Pressing nail lower die assembly of deep groove ball bearing retainer and machining device

Abstract

The utility model discloses a nail pressing lower die assembly and a processing device of a deep groove ball bearing retainer, which comprises a nail pressing lower die used for placing a retainer to be processed and provided with a first inserting hole for inserting a rivet, and the first inserting hole penetrates through the nail pressing lower die; the first end of the material returning needle can extend into the first inserting hole and move, and the second end of the material returning needle is a conductive end; the second end of the spring seat is mounted on the spring seat through a spring; the rivet missing detection device is located between the rivet pressing lower die and the spring seat, the material returning needle penetrates through the rivet missing detection device, the rivet missing detection device is provided with a conductive layer, and after the rivet is inserted into the first inserting hole, the material returning needle is separated from the conductive layer; and the rivet is not inserted into the first insertion hole, and the material returning needle is in contact with the conductive layer to form a closed circuit. The rivet missing detection device is additionally arranged on the rivet pressing lower die, and in the rivet pressing process, rivets on the rivet pressing lower die are detected so as to determine whether the rivet pressing lower die lacks the rivets or not, so that an operator can conveniently process a product, and the quality of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a pin lower die assembly and a processing device for a deep groove ball bearing retainer. Background Art

[0002] Rolling bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during the movement of mechanical rotating bodies, and ensure the rotation accuracy of mechanical rotating bodies. They are called mechanical joints and are widely used in various types of machinery.

[0003] Rolling bearings consist of four components: inner ring, outer ring, rolling element and cage. The inner ring is used to match the shaft and rotate with the shaft; the outer ring is used to match the bearing seat and play a supporting role; the rolling element is evenly distributed between the inner ring and the outer ring with the help of the cage, and its shape, size and number directly affect the performance and life of the rolling bearing; the cage plays the role of isolating the rolling element and guiding its movement in the rolling bearing.

[0004] The shapes of the cages of different types of bearings may be different. For example, the cages used in deep groove ball bearings are generally called wave-shaped cages, that is, the cages have protrusions (or grooves) to form ball pockets for the rolling elements.

[0005] Usually there are two retaining frames, and the protrusions are arranged opposite to each other and form a accommodating position for the rolling body. In order to achieve the connection between the two retaining frames, rivets are usually used to connect the two retaining frames together. Therefore, during the retaining frame production process, the retaining frames will be subjected to a press nailing process, and only rivets will be pressed on the retaining frames.

[0006] However, due to the problem of lack of rivets on the pressing die during the pressing process of the rivets with the retainer, the quality of the processed products is affected.

[0007] Therefore, how to provide a press-nail lower module for a deep groove ball bearing retainer that can detect whether a nail is missing to ensure product quality is a technical problem that technical personnel need to solve urgently. Utility Model Content

[0008] In view of this, the utility model provides a press-nail lower die set of a deep groove ball bearing cage, which can detect whether a nail is missing to ensure the quality of the product. In addition, the utility model also provides a processing device having the press-nail lower die set of the deep groove ball bearing cage.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A press pin lower die assembly for a deep groove ball bearing cage, comprising:

[0011] A rivet lower die, the rivet lower die is used to place the retaining frame to be processed, the rivet lower die is provided with a first insertion hole for inserting the rivet, and the first insertion hole passes through the rivet lower die;

[0012] A material stripping needle, wherein the first end of the material stripping needle can extend into the first insertion hole and move along the first insertion hole, and the second end of the material stripping needle is a conductive end;

[0013] A spring seat, on which the second end of the stripping needle is mounted via a spring;

[0014] A nail missing detection device, wherein the nail missing detection device is located between the nail pressing lower die and the spring seat, and the ejector needle penetrates the nail missing detection device, and the nail missing detection device has a conductive layer. After the rivet is inserted into the first insertion hole, the ejector needle is separated from the conductive layer; if the rivet is not inserted into the first insertion hole, the ejector needle contacts the conductive layer to form a closed circuit.

[0015] Preferably, the above-mentioned pin lower die assembly of the deep groove ball bearing retainer further includes:

[0016] An alarm device is provided, wherein the nail-missing detection device is connected to the alarm device.

[0017] Preferably, in the above-mentioned pressure pin lower die assembly of the deep groove ball bearing retainer, there are multiple stripping needles, and the alarm device is arranged in a one-to-one correspondence with the stripping needles.

[0018] Preferably, in the above-mentioned nail pressing lower die assembly of the deep groove ball bearing retainer, the nail missing detection device further comprises:

[0019] A first insulating layer, one side of the conductive layer is in contact with the pin lower mold through the first insulating layer;

[0020] A second insulating layer, the other side of the conductive layer is in contact with the spring seat through the second insulating layer.

[0021] Preferably, in the above-mentioned pin lower die assembly of the deep groove ball bearing cage, the conductive layer is a copper plate;

[0022] And / or, the first insulating layer and / or the second insulating layer is a rubber layer.

[0023] Preferably, in the above-mentioned pin lower die assembly of the deep groove ball bearing cage, a positioning ball is provided on one side of the pin lower die for placing the cage, and the positioning ball is used to face the ball pocket of the cage and position the cage.

[0024] Preferably, in the above-mentioned pressure nail lower die assembly of the deep groove ball bearing retainer, the number of the positioning balls is at least two and they are evenly arranged along the circumference of the pressure nail lower die;

[0025] And / or, the alarm device is an audible and visual alarm device.

[0026] Preferably, in the above-mentioned pressing nail lower die assembly of the deep groove ball bearing retainer, the pressing nail lower die comprises:

[0027] A lower template, one side of which is provided with a positioning ball;

[0028] A base tire is detachably connected to the other side of the lower template, the nail missing detection device is located between the base tire and the spring seat, and the ejection needle can penetrate the base tire.

[0029] A deep groove ball bearing retainer processing device comprises the press pin lower die assembly of the deep groove ball bearing retainer as described in any one of the above items.

[0030] The utility model discloses a nail pressing lower die assembly for a deep groove ball bearing retainer. By adding a nail missing detection device on the nail pressing lower die, the rivets on the nail pressing lower die can be detected during the nail pressing process to determine whether the nail pressing lower die is missing rivets, thereby facilitating the operator to handle the product to ensure the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of a pressing nail mold of a deep groove ball bearing cage disclosed in an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of a press pin lower die assembly of a deep groove ball bearing cage disclosed in an embodiment of the utility model;

[0034] Figure 3 It is a top view of a lower die assembly of a press pin of a deep groove ball bearing retainer disclosed in an embodiment of the utility model;

[0035] Figure 4 for Figure 3 Sectional view in the AA direction;

[0036] Figure 5It is a partial structural schematic diagram of the lower die assembly of the press nail disclosed in the embodiment of the utility model;

[0037] Figure 6 It is a structural schematic diagram of a nail missing detection device of a nail pressing lower die assembly disclosed in an embodiment of the utility model;

[0038] Figure 7 It is a structural schematic diagram of the bottom tire disclosed in the embodiment of the utility model;

[0039] Figure 8 It is a structural schematic diagram of the spring seat disclosed in the embodiment of the utility model. DETAILED DESCRIPTION

[0040] The utility model discloses a press-nail lower die set of a deep groove ball bearing cage, which can detect whether a nail is missing to ensure the quality of the product. In addition, the utility model also discloses a processing device having the press-nail lower die set of the deep groove ball bearing cage.

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] Rolling bearings consist of four components: inner ring, outer ring, rolling element and cage. The inner ring is used to match the shaft and rotate with the shaft; the outer ring is used to match the bearing seat and play a supporting role; the rolling element is evenly distributed between the inner ring and the outer ring with the help of the cage, and its shape, size and number directly affect the performance and life of the rolling bearing; the cage plays the role of isolating the rolling element and guiding its movement in the rolling bearing.

[0044] The shapes of the cages of different types of bearings may be different. For example, the cages used in deep groove ball bearings are generally called wave-shaped cages, that is, the cages have protrusions (or grooves) to form ball pockets for the rolling elements.

[0045] Usually there are two retaining frames, and the protrusions are arranged opposite to each other and form a accommodating position for the rolling body. In order to achieve the connection between the two retaining frames, rivets are usually used to connect the two retaining frames together. Therefore, during the retaining frame production process, the retaining frames will be subjected to a press nailing process, and only rivets will be pressed on the retaining frames.

[0046] However, due to the problem of lack of rivets on the pressing die during the pressing process of the rivets with the retainer, the quality of the processed products is affected.

[0047] like Figures 1 to 8 As shown, the present application discloses a nail pressing lower die assembly of a deep groove ball bearing retainer, comprising: a nail pressing lower die, a stripping needle 15 , a spring seat 13 and a nail missing detection device 14 .

[0048] Among them, the pressure nail lower die is used to place the retaining frame 2 to be processed, and the pressure nail lower die is provided with a first insertion hole (not shown in the figure) for inserting the rivet 4, and the first insertion hole passes through the pressure nail lower die; the first end of the stripping needle 15 can extend into the first insertion hole and move along the first insertion hole, and the second end of the stripping needle 15 is a conductive end; the second end of the stripping needle 15 is installed on the spring seat 13 through a spring (not shown in the figure); the nail missing detection device 14 is located between the pressure nail lower die and the spring seat 13, and the stripping needle 15 passes through the nail missing detection device 14, and the nail missing detection device 14 has a conductive layer 142. After the rivet 4 is inserted into the first insertion hole, the stripping needle 15 is separated from the conductive layer 142; the rivet 4 is not inserted into the first insertion hole, and the stripping needle 15 contacts the conductive layer 142 to form a closed circuit.

[0049] During the nail pressing process, the nail pressing upper mold 3 moves toward the nail pressing lower mold, and after the rivet 4 is inserted into the retaining frame, it is inserted into the first insertion hole; during the insertion of the rivet 4 into the first insertion hole, the material stripping needle 15 is pushed to move in the direction of the spring seat 13 and squeeze the spring. During the movement of the material stripping needle 15 in the direction of the spring seat 13, the second end of the material stripping needle 15 moves away from the conductive layer 142 until it is separated from the conductive layer 142; if there is no rivet 4 in a through hole of the retaining frame, the material stripping needle 15 in the first insertion hole corresponding to the through hole will not be pushed during the movement of the nail pressing upper mold 3 toward the nail pressing lower mold, and the second end of the material stripping needle 15 contacts the conductive layer 142. When the conductive layer is connected to the external power supply, the material stripping needle 15 and the conductive layer 142 form a closed loop, and the closed loop can be used to remind the operator that the nail pressing lower mold is missing a nail.

[0050] In the present application, by adding a nail missing detection device 14 to the nail pressing lower die, the rivets on the nail pressing lower die can be detected during the nail pressing process to determine whether the rivets are missing from the nail pressing lower die, thereby facilitating the operator to handle the product to ensure the quality of the product.

[0051] In some embodiments, after the stripping needle 15 and the conductive layer 142 form a closed loop, the missing nail can be displayed on the control panel. In an optional embodiment, the press nail lower die assembly of the deep groove ball bearing retainer also includes: an alarm device (not shown in the figure), and the missing nail detection device 14 is connected to the alarm device. When the rivet 4 is inserted into the first insertion hole, the rivet 4 pushes the stripping needle 15 to compress the spring, and the second end of the stripping needle 15 is separated from the conductive layer 142, and the alarm device is not activated; when the rivet 4 is not inserted into the first insertion hole, the second end of the stripping needle 15 contacts the conductive layer 142, and the alarm device is activated.

[0052] By adding an alarm device, it is convenient to remind the operator that the retainer is a nail-deficient product. The alarm device includes but is not limited to an audible and optical structure.

[0053] In some embodiments, there are multiple ejection needles 15, and the alarm device is set in one-to-one correspondence with the ejection needles 15. Setting the alarm device in one-to-one correspondence with the ejection needles 15 can facilitate the operator to directly determine which position of the ejection needle 15 is missing a nail, making it more convenient for the operator to perform the corresponding nail filling and avoiding the situation of missing nails.

[0054] Combination Figure 6 As shown, the nail missing detection device 14 in the present application includes: a first insulating layer 141 , a conductive layer 142 and a second insulating layer 143 .

[0055] One side of the conductive layer 142 contacts the lower die of the press pin through the first insulating layer 141, and the other side of the conductive layer 142 contacts the spring seat 13 through the second insulating layer 143. Both sides of the conductive layer 142 contact other components through the insulating layers to avoid leakage and safety hazards.

[0056] In some embodiments, the conductive layer 142 can be wrapped with an insulating material, and only the second end of the stripping needle 15 is a conductive material, so as to prevent the conductive layer 142 from leaking electricity through the stripping needle 15. The conductive layer 142 includes but is not limited to a copper plate; and / or the first insulating layer 141 and / or the second insulating layer 143 are rubber layers, and the insulating layer can also be made of other materials, such as plastic.

[0057] The lower die of the press nail in the present application is provided with a positioning ball 16 on one side for placing the retainer 2, and the positioning ball 16 is used to face the ball pocket of the retainer 2 and position the retainer 2. In the present application, by providing the positioning ball 16 on the lower die of the press nail, on the one hand, the ball pocket can be protected to prevent the upper die 3 of the press nail from squeezing the ball pocket and affecting the shape of the ball pocket during the press nailing process; on the other hand, after the ball pocket contacts the positioning ball 16, the retainer 2 is positioned under the action of the positioning ball 16 to prevent the retainer 2 from moving and affecting the press installation process of the rivet.

[0058] Based on this, in some embodiments, a plurality of positioning balls 16 are provided, and the positioning balls 16 are evenly arranged along the circumference of the nail upper mold 3, which can be understood as a circular arrangement. The diameter of the circle formed by these positioning balls 16 is the same as the diameter of the annular surface where the ball pocket of the retainer 2 is located.

[0059] The number and shape of the positioning balls 16 can be set according to the number and shape of the ball pockets of the retaining frame 2, and are all within the protection range.

[0060] In some embodiments, the nail pressing lower mold includes: a lower mold plate 11 and a base tire 12, wherein a positioning ball 16 is provided on one side of the lower mold plate 11; the base tire 12 is connected to the other side of the lower mold plate 11, the nail missing detection device 14 is located between the base tire 12 and the spring seat 13, and the material removal needle 15 can penetrate the base tire 12.

[0061] Since the lower template 11 is a consumable part, the lower template 11 is detachably connected to the base tire 12 to facilitate replacement of the lower template 11 and reduce processing costs. The nail missing detection device 14 is located between the base tire 12 and the spring seat 13, and the stripping needle 15 passes through the base tire 12, which can increase the moving distance of the stripping needle 15 and ensure that the rivet 4 can be fully inserted into the retainer 2.

[0062] In some embodiments, the rivet 4 and the retainer 2 have an interference fit, and during the process of the upper die 3 of the pressure nail moving away from the lower die of the pressure nail, the external force of the rivet 4 is cancelled, and under the reset force of the spring, the stripping needle 15 pushes the rivet 4 to drive the retainer 2 to move a preset distance away from the lower die of the pressure nail. The distance that the retainer 2 moves can be set according to the position of the clamping jaws. Optionally, the stripping needle 15 can just lift the retainer 2 to the position of the clamping jaws, so that the clamping jaws can clamp the retainer 2. The rivet 4 and the retainer 2 have an interference fit, which can prevent the rivet 4 from separating from the retainer 2 during the process of the stripping needle 15 pushing the rivet 4.

[0063] In some embodiments, the diameter of the second end of the ejection needle 15 is larger than the diameter of the first end, and the second end of the ejection needle 15 can be clamped with the side of the nail missing detection device 14 close to the spring seat 13 to limit the rising position of the ejection needle 15 and prevent the ejection needle 15 from falling out.

[0064] The lower template 11, the base tire 12, the spring seat 13 and the conductive layer 142 in the present application are all cylindrical structures.

[0065] In addition, the present application also discloses a processing device for a deep groove ball bearing retainer, including a pressure nail lower die assembly for the deep groove ball bearing retainer, wherein the pressure nail lower die assembly for the deep groove ball bearing retainer is the pressure nail lower die assembly for the deep groove ball bearing retainer disclosed in the above-mentioned embodiment. Therefore, the processing device for the deep groove ball bearing retainer having the pressure nail lower die assembly for the deep groove ball bearing retainer also has all the above-mentioned technical effects, which will not be repeated here one by one.

[0066] In addition, the present application also discloses a method for detecting missing nails in a lower die of a deep groove ball bearing cage, which uses the lower die assembly of the above embodiment, and includes:

[0067] The retainer after nailing is transported to the lower die of the nail pressing.

[0068] Start the upper die of the press nail and move it toward the lower die of the press nail.

[0069] It is only necessary to detect missing nails during the nail pressing process to avoid misoperation.

[0070] When the distance between the pressure nail upper die 3 and the pressure nail lower die is less than the preset distance, the conductive layer of the pressure nail lower die assembly is externally connected to a power source.

[0071] In some embodiments, when the distance between the upper die 3 and the lower die is a preset distance, the rivet 4 is assembled and connected with the retaining frame 2, and the two are interference fit. When the rivet 4 and the retaining frame 2 are assembled, the second end of the stripping needle 15 can be pushed to separate from the conductive layer 142, and the stripping needle 15 that is not opposite to the rivet 4 has its second end in contact with the conductive layer 142 to form a closed circuit. When the stripping needle 15 contacts the conductive layer 142 to form a closed circuit, the alarm device is activated.

[0072] The alarm device is used to conveniently remind the operator that the retainer is a nail-deficient product.

[0073] The upper die of the pressing nail moves in a direction away from the lower die of the pressing nail, and the stripping needle 15 lifts the retaining frame 2 to a preset height under the action of the spring.

[0074] Under the action of the spring, the material-removing needle 15 can realize the material removal of the retaining frame 2, making it convenient for the clamping jaws to clamp the retaining frame 2.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A press pin lower die assembly for a deep groove ball bearing cage, characterized in that: include: A rivet lower die, the rivet lower die is used to place the retaining frame to be processed, the rivet lower die is provided with a first insertion hole for inserting the rivet, and the first insertion hole passes through the rivet lower die; A material stripping needle, wherein the first end of the material stripping needle can extend into the first insertion hole and move along the first insertion hole, and the second end of the material stripping needle is a conductive end; A spring seat, on which the second end of the stripping needle is mounted via a spring; A nail missing detection device, wherein the nail missing detection device is located between the nail pressing lower die and the spring seat, and the ejector needle penetrates the nail missing detection device, and the nail missing detection device has a conductive layer. After the rivet is inserted into the first insertion hole, the ejector needle is separated from the conductive layer; if the rivet is not inserted into the first insertion hole, the ejector needle contacts the conductive layer to form a closed circuit.

2. The lower die assembly for the deep groove ball bearing cage according to claim 1, characterized in that: Also includes: An alarm device is provided, wherein the nail-missing detection device is connected to the alarm device.

3. The lower die assembly for the deep groove ball bearing cage according to claim 2, characterized in that: There are multiple material withdrawal needles, and the alarm device is arranged in a one-to-one correspondence with the material withdrawal needles.

4. The lower die assembly for pressing nails of the deep groove ball bearing cage according to claim 1, characterized in that: The nail missing detection device also includes: A first insulating layer, one side of the conductive layer is in contact with the pin lower mold through the first insulating layer; A second insulating layer, the other side of the conductive layer is in contact with the spring seat through the second insulating layer.

5. The lower die assembly for the deep groove ball bearing cage according to claim 4, characterized in that: The conductive layer is a copper plate; And / or, the first insulating layer and / or the second insulating layer is a rubber layer.

6. The lower die assembly for pressing nails of the deep groove ball bearing cage according to claim 2, characterized in that: A positioning ball is arranged on one side of the pressing nail lower die for placing the retaining frame, and the positioning ball is used to be opposite to the ball pocket of the retaining frame and position the retaining frame.

7. The lower die assembly for the deep groove ball bearing cage according to claim 6, characterized in that: There are at least two positioning balls, which are evenly arranged along the circumference of the nail pressing lower die; And / or, the alarm device is an audible and visual alarm device.

8. The lower die assembly for pressing nails of a deep groove ball bearing cage according to claim 6, characterized in that: The nail pressing lower die comprises: A lower template, one side of which is provided with a positioning ball; A base tire is detachably connected to the other side of the lower template, the nail missing detection device is located between the base tire and the spring seat, and the ejection needle can penetrate the base tire.

9. A processing device for a deep groove ball bearing cage, characterized in that: A press nail lower die assembly comprising a deep groove ball bearing retainer as described in any one of claims 1 to 8.

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