Side slider assembly and side forming device

Abstract

The present invention discloses a side slider assembly and a side forming device, wherein the side slider assembly includes a plurality of sliders arranged at intervals along the circumferential direction, and any slider includes: a main body; a second wall portion arranged at an interval relative to the first wall portion at the top of the main body; a V-shaped wall is formed on the side of the first wall portion, and an inclined wall is formed on the side of the second wall portion, and the V-shaped wall and the inclined wall are enclosed to form a slot; a forming portion is formed at the top of the other side of the second wall portion; a slide groove that matches the slider one by one is provided at intervals along the circumferential direction on the mounting seat, and the slider is suitable for being driven by a lower die driving ring that is movably placed in the slide groove and matches the shape of the slide groove, and moves radially inward in the slide groove to stamp and form positioning convex points. The positioning convex points of the outer ring of the thrust needle roller bearing cage are completed in one stop, the size of the positioning convex points is consistent, the roundness of the outer ring will not change, and there will be no error in the spacing between the positioning convex points. The product has high precision and good performance.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping and forming dies, and in particular relates to a side slider assembly and a side forming device suitable for machining positioning convex points of an outer ring of a thrust needle roller bearing retainer. Background Art

[0002] like Figure 1 The figure shows the company's existing new thrust needle roller bearing cage. Several radially inwardly protruding positioning convex points are evenly spaced on the outer ring of the cage. That is to say, the outer ring of the cage is recessed inward to form positioning convex points with inner convexity and outer concaveness. The main advantages of this cage are to reduce the friction between the needle roller and the outer ring, reduce the movement of the needle roller, increase the life of the bearing, and reduce the noise generated when the bearing rotates. The height of the positioning convex point, that is, the height of the radial inward protrusion is 0.35+0~0.05 / mm, the roundness of the outer ring bearing the positioning convex point cannot be greater than 0.05, and the distance between the positioning convex point vertices, that is, the positioning convex points at both ends of the diameter of the outer ring of the cage, is within 64.19±0.05. Generally, the progressive die adopts the side slider for forming. Since the positioning convex points are very densely distributed, considering the structural strength of the slider and the punch of the driving slider, it is generally adopted to evenly space several convex point positions throughout the circle, and the forming of the entire circle of positioning convex points is completed in several times.

[0003] The disadvantage of this forming process is that each time the side punch forming is completed, the size of the previously completed positioning convex point will be affected, the roundness of the outer ring of the cage will also change differently, and the spacing between adjacent positioning convex points will have errors to a certain extent due to multiple positioning. There is no existing side forming equipment that can solve the above technical problems. Therefore, a side forming device suitable for the positioning convex points of the above-mentioned new thrust needle roller bearing cage is urgently needed to solve the above technical problems. Summary of the invention

[0004] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a side slider assembly and a side forming device. The side slider assembly is creatively designed, and the design of the inclined portion of the lower mold drive ring can complete the circumferential design of the positioning protrusions of the outer ring of the thrust needle roller bearing retainer in one stop. The size of the positioning protrusions is consistent, the roundness of the outer ring will not change, and there will be no error in the spacing between the positioning protrusions. The product has high precision and good performance.

[0005] The technical solution of the present invention is:

[0006] An object of the present invention is to provide a side slider assembly, comprising:

[0007] A plurality of sliders are arranged at intervals along the circumferential direction, and any of the sliders comprises:

[0008] Body part;

[0009] A first wall portion, formed on one side of the top of the main body portion;

[0010] A second wall portion, formed on the other side of the top of the main body portion, and opposite to and spaced from the first wall portion;

[0011] A V-shaped wall surface with an opening toward the second wall surface is formed on the side of the first wall portion facing the second wall portion, and an inclined wall surface extending obliquely upward is formed on the side of the second wall portion facing the first wall portion, and the V-shaped wall surface and the inclined wall surface are enclosed to form a slot;

[0012] The second wall portion is formed with a forming portion extending outwardly at the top end of the side surface facing away from the first wall portion and used for forming the positioning convex points required for stamping the outer ring of the thrust needle roller bearing cage to be processed;

[0013] The mounting seat is provided with slide grooves which are spaced apart along the circumference and correspond to the slider one by one. The slider is suitable for moving radially inward in the slide groove to stamp and form the positioning protrusion by the driving force of the lower mold driving ring which is movably placed in the slide groove and matches the shape of the slide groove.

[0014] Optionally, the mounting seat is composed of two coaxially sleeved cylinders, the middle of the inner cylinder is open to form a first mounting groove for mounting the unloading support dual-purpose block, the bottoms of the two cylinders are connected and the tops form an annular gap for the slide groove to be set;

[0015] A plurality of partition walls are arranged at intervals in the annular gap and match the shape of the slider. A slide groove is defined between any two adjacent partition walls, and the slide groove radially penetrates the side walls of the two cylinders.

[0016] Another object of the present invention is to provide a side forming device for stamping and forming the positioning protrusions on the outer ring of the thrust needle roller bearing cage, the side forming device comprising an upper die assembly having an upper die seat, a fixed pad, a fixed plate and a stripper plate in sequence from top to bottom, and a lower die assembly having a lower die, a lower die pad and a lower die seat in sequence from top to bottom, and further comprising:

[0017] A side punch die assembly, comprising a side punch die movably arranged in the upper die plate assembly and a biasing member arranged between the top of the side punch die and the upper die seat, wherein the biasing member is suitable for applying a downward biasing force to the side punch die in a mold-closing state, and a plurality of positioning concave points matching the positioning convex points to be formed are formed at circumferential intervals on the side wall of the side punch die, and in an open mold state, a movable gap is reserved between the top of the side punch die and the top of the upper die seat for the side punch die to move upward after the fixed plate and the stripper plate are attached;

[0018] A discharge block, movably mounted in the second mounting groove in the middle of the side punch die;

[0019] A driving push rod assembly, comprising a driving push rod fixed on the fixed plate, an upper die driving ring movably arranged in the stripper plate, and a first elastic member arranged between the upper die driving ring and the stripper plate, wherein the elastic force of the first elastic member is less than the biasing force of the biasing member; in a mold opening state, a discharge stroke is provided between the fixed plate and the stripper plate, the driving push rod does not contact the upper die driving ring, the bottom surface of the upper die driving ring is higher than the bottom surface of the stripper plate, and the bottom surface of the stripper plate is higher than the bottom surface of the side punch die;

[0020] A side slider assembly, wherein the side slider assembly is any of the side slider assemblies described above;

[0021] A dual-purpose block for unloading and supporting, movably mounted in the first mounting groove in the middle of the mounting seat and arranged opposite to the unloading block;

[0022] The lower die driving ring has a pressing inclined surface at its bottom that matches the slot, and the pressing inclined surface matches the V-shaped wall surface. During the stamping process in the mold closing state, the pressing inclined surface is pressed by the driving ejector assembly to drive the slider to move laterally, so that the forming part stamps the outer ring of the thrust needle roller bearing cage to be processed fixed between the unloading block and the unloading support dual-purpose block to form the required positioning convex points, until the fixing plate contacts the stripping plate to complete the stamping of the positioning convex points.

[0023] A reset assembly, comprising a balanced reset push rod movably arranged in the lower mold assembly, a reset plate installed at the bottom of the balanced reset push rod, a reset member installed between the reset plate and the lower mold base, and a push rod connected at one end to the reset plate and at the other end to the bottom of the unloading support dual-purpose block;

[0024] When the mold is in the open state, the unloading and supporting dual-purpose block floats above the bottom of the first mounting groove under the action of the reset assembly, and the balancing reset push rod extends out of the upper surface of the lower template; during the stamping process in the closed mold state, the top of the balancing reset push rod contacts the stripping plate and moves downward, driving the reset plate, the push rod and the unloading and supporting dual-purpose block to reset downward at the same time, until the unloading and supporting dual-purpose block contacts the bottom of the first mounting groove to complete the stamping forming.

[0025] Optionally, the lower die driving ring includes:

[0026] An annular body, the top of which is formed with a contact plane suitable for contacting the upper die drive ring during the stamping process;

[0027] An inclined portion is formed at the bottom of the annular body, and an outer wall of the inclined portion is formed with a V-shaped matching wall surface matching the V-shaped wall surface, and the V-shaped matching wall surface is the pressing inclined surface;

[0028] A V-shaped slot for the first wall portion to be inserted is formed between the bottom of the annular body and the V-shaped matching wall surface.

[0029] Optionally, the biasing member is a biasing spring, and there are three of them, which are arranged in a triangle.

[0030] Optionally, a pressing plane is formed on the outer side of the bottom surface of the upper mold driving ring, and a notch recessed upward is formed on the inner side of the bottom surface, and the pressing plane is suitable for pressing against the annular body in the mold closing state; and / or

[0031] A first flange is formed at the top of the upper mold driving ring, a second flange opposite to the first flange is formed at the bottom of the stripping plate, one end of the first elastic member abuts against the bottom of the first flange, and the other end abuts against the top of the second flange.

[0032] Optionally, a second elastic member is provided between the side punch die and the discharge block, the second elastic member is suitable for applying a downward biasing force to the discharge block, and the elastic force of the second elastic member is smaller than the biasing force of the biasing force.

[0033] Optionally, a guide assembly is further included, which includes a guide protrusion arranged on one of the stripping plate and the lower template and a guide recess arranged on the other of the stripping plate and the lower template and matching the guide protrusion.

[0034] Optionally, the guide assembly includes a guide needle that protrudes downward and is arranged at the bottom of the stripper plate, and a guide hole that is arranged on the lower template.

[0035] Optionally, a recessed portion is provided at the bottom of the side punch die, and a raised portion matching the recessed portion is provided on the unloading support dual-purpose block, and the recessed portion and the raised portion are used together to stamp and form an axially upward protruding bump between the inner ring and the outer ring of the thrust needle roller bearing retainer to be processed.

[0036] Compared with the prior art, the advantages of the present invention are:

[0037] The side forming device of the present invention can complete the positioning convex points of the circumferential design of the outer ring of the thrust needle roller bearing cage in one stop through the creative design of the side slider assembly and the design of the inclined surface of the lower die driving ring. The size of the positioning convex points is consistent, the roundness of the outer ring will not change, and the spacing between the positioning convex points will not have errors. The product has high precision and good performance. The problem caused by the process of completing the whole circle of convex point forming in several times mentioned in the background technology is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0039] Figure 1 It is a structural schematic diagram of a thrust needle roller bearing cage according to the background technology and embodiments of the present invention;

[0040] Figure 2 It is a structural schematic diagram of a side slider assembly according to an embodiment of the present invention;

[0041] Figure 3 It is a structural schematic diagram of a slider of a side slider assembly according to an embodiment of the present invention;

[0042] Figure 4 It is a structural schematic diagram of a mounting base of a side slider assembly according to an embodiment of the present invention;

[0043] Figure 5 It is a schematic cross-sectional structure diagram of the side molding device in the mold opening state according to an embodiment of the present invention;

[0044] Figure 6 It is a schematic cross-sectional structure diagram of the side molding device of an embodiment of the present invention in a mold closing state;

[0045] Figure 7 It is a schematic structural diagram of a side punch die of a side forming device according to an embodiment of the present invention;

[0046] Figure 8 for Figure 6 A partial enlarged structural diagram of the concave portion at the bottom of the side punch die of the side forming device and the convex portion at the top of the unloading support dual-purpose block;

[0047] Fig. 9 A cross-sectional view of an upper die driving ring of a side molding device according to an embodiment of the present invention;

[0048] Fig.10 It is a schematic structural diagram of a lower die driving ring of a side forming device according to an embodiment of the present invention;

[0049] Fig.11 It is a schematic diagram of the top structure of the side forming device according to an embodiment of the present invention.

[0050] Among them: 1', retainer; 10', positioning convex point; 11', inner ring; 12', outer ring; 13', convex bump; 14', material strip; 1, upper template assembly; 11, upper die seat cover; 111, blocking member; 12, upper die seat; 13, fixed plate pad; 14, fixed plate; 15, stopper plate; 16, stripper plate; 2, lower template assembly; 21, lower template; 22, first lower template pad; 23, second lower template pad; 24, lower die seat; 3, side punch die assembly; 30, active gap; 31, side punch die; 311, positioning concave point; 312, recessed part; 32, biasing member; 33, second elastic member; 4, unloading block; 5, side slider assembly; 50, first mounting groove; 51 , mounting seat; 510, slide groove; 511, partition wall; 52, slider; 521, main body; 522, first wall; 523, second wall; 524, V-shaped wall; 525, inclined wall; 526, slot; 527, forming portion; 6, unloading support dual-purpose block; 61, raised portion; 7, reset assembly; 71, balance reset ejector; 72, reset plate; 73, reset member; 74, ejector; 8, drive ejector assembly; 81, drive ejector; 82, upper mold drive ring; 821, first flange; 822, pressing plane; 823, notch; 83, first elastic member; 9, lower mold drive ring; 91, annular body; 92, inclined portion; 93, V-shaped slot; 10, guide needle. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0052] Example:

[0053] See also Figures 1 to 6 A side slider assembly according to an embodiment of the present invention includes a plurality of sliders 52 spaced apart along the circumferential direction and a mounting seat 51 for mounting the sliders 52 .

[0054] like Figure 3As shown, any slider 52 includes a body portion 521, a first wall portion 522, and a second wall portion 523. The body portion 521 is in a square block shape, with the first wall portion 522 formed on the left side of the top of the body portion 521, and the second wall portion 523 formed on the right side of the top of the body portion 521. A V-shaped wall surface 524 with an opening toward the second wall portion 523 is formed on the side of the first wall portion 522 facing the second wall portion 523, that is, on the right side of the first wall portion 522, and an inclined wall surface 525 extending obliquely upward is formed on the side of the second wall portion 523 facing the first wall portion 522, that is, on the left side of the second wall portion 523, and the V-shaped wall surface 524 and the inclined wall surface 525 enclose a U-shaped slot 526 with an inclined top opening. The side of the second wall portion 523 facing away from the first wall portion 522, i.e., the top of the right side of the second wall portion 523, forms a convex point structure extending outward, and the convex point structure is a forming portion 527. It should be noted that the forming portion 527 matches the positioning convex point on the outer ring of the thrust needle roller bearing cage to be processed, and is used for stamping the required positioning convex point. The top of the left side of the first wall portion 522 is formed with two obtuse angles, and the two inclined surfaces form a V-shaped inclined surface.

[0055] like Figure 4 As shown, the mounting seat 51 is annular, and the upper side thereof is provided with chute 510 corresponding to the above-mentioned plurality of sliders 52 at intervals in the circumferential direction. The slider 52 is adapted to be driven by the driving force of the lower die driving ring 9 which is movably placed in the chute 510 and matches the shape of the chute 510, and moves radially inward in the chute 510 to stamp and form the positioning convex point. Specifically, the mounting seat 51 is composed of two coaxially sleeved cylinders, and the middle part of the inner cylinder is open to form the first mounting groove 50 for the installation of the unloading support dual-purpose block 6, and the bottom of the two cylinders is connected and the top is formed with an annular gap for the chute 510 to be set. In the annular gap, there are provided a plurality of spaced partition walls 511 which match the shape of the slider 52, and a chute 510 is defined between any two adjacent partition walls 511, and the chute 510 radially penetrates the side walls of the two cylinders. The setting of the partition wall 511 can play the role of circumferential limit and radial guidance for the sliding of the slider 52.

[0056] Due to the design of the inclined portion 92 and the design of the slot 526, when the driving push rod 81 presses down to drive the upper mold driving ring 82 to drive the lower mold driving ring 9 to press down, the inclined portion 92 will push the slider 52 to move inward, and the forming portion 527 on the inner side of the top end of the second wall portion 523 of the slider 52 acts on the outer ring of the retaining frame on the outer periphery of the side punch die 31 to perform one-stop stamping forming of the positioning protrusions.

[0057] See Figures 1 to 11As shown, an embodiment of the present invention also provides a side forming device for one-stop stamping and forming the positioning protrusions on the outer ring of a thrust needle roller bearing retainer, including an upper template assembly 1, a lower template 21 assembly 2, a side punch die assembly 3, a discharge block 4, a driving push rod assembly 8, a side slider assembly 5, a discharge support dual-purpose block 6, a lower die drive ring 9, a reset assembly 7 and a guide assembly.

[0058] like Figure 5 and Figure 6 As shown, the upper template assembly 1 includes an upper mold base 12 cover plate 11, an upper mold base 12, a fixed pad, a fixed plate 14 and a stripper plate 16 which are arranged in sequence from top to bottom. The stripper plate 16 is composed of a stopper plate 15 located above and a stripper plate 16 body located below. A first cavity is opened in the middle of the fixed pad, the fixed plate 14, the stopper plate 15 and the stripper plate 16 body. The lower template 21 assembly 2 includes a lower template 21, a lower mold pad and a lower mold base 24 which are arranged in sequence from top to bottom. The lower mold pad includes a first lower mold pad at the top and a second lower mold pad at the bottom. A second cavity is opened in the middle of the lower template 21, the first lower mold pad and the second lower mold pad.

[0059] like Figures 5 to 8 As shown, the side punch die assembly 3 includes a side punch die 31 movably arranged in the upper mold assembly 1, that is, in the first cavity mentioned above, and a biasing member 32 arranged between the top of the side punch die 31 and the upper die seat 12. The biasing member 32 is suitable for applying a downward biasing force to the side punch die 31 in the mold closing state to ensure that the thrust needle roller bearing retainer to be processed is always fixed between the unloading support dual-purpose block 6 and the unloading block 4 in the mold closing state. The side wall of the side punch die 31 is formed with a plurality of positioning concave points 311 matching the positioning convex points to be formed at circumferential intervals. In the mold opening state, a movable gap 30 is reserved between the top of the side punch die 31 and the top of the upper die seat 12. The movable gap 30 allows the lower die seat 24 to not interfere with the side punch die 31 and affect the contact between the fixed plate 14 and the stop plate during the mold closing process, that is, when the unloading stroke is reduced to zero.

[0060] The discharge block 4 is movably mounted in the second mounting groove (not shown in the figure) in the middle of the side punch die 31. Preferably, a second elastic member 33 is further provided between the side punch die 31 and the discharge block 4, the top of the second elastic member 33 abuts against the bottom of the second elastic member 33 mounting hole opened on the side punch die 31, and the bottom of the second elastic member 33 abuts against the top of the discharge block 4. When the mold is opened, a downward elastic force can be applied to the discharge block 4 to facilitate unloading. At the same time, it can also play a buffering role to prevent the side punch die 31 and the discharge block 4 from colliding and being damaged when the mold is closed.

[0061] like Figure 5 and Figure 6As shown, the driving push rod assembly 8 includes a driving push rod 81 fixed on the fixed plate 14, an upper die driving ring 82 movably arranged in the stripper plate 16, and a first elastic member 83 arranged between the upper die driving ring 82 and the stripper plate 16. The elastic force of the first elastic member 83 is less than the biasing force of the biasing member 32. In the mold opening state, a discharge stroke is provided between the fixed plate 14 and the stripper plate 16. Figure 5 The spacing H between the bottom surface of the fixed plate 14 and the top surface of the stop plate 15 in the mold opening state shown, the unloading stroke in this embodiment is designed to be 12 mm. The unloading stroke is not greater than the movable gap 30, the driving push rod 81 is not in contact with the upper mold driving ring 82, the bottom surface of the upper mold driving ring 82 is higher than the bottom surface of the stripping plate 16, and the bottom surface of the stripping plate 16 is higher than the bottom surface of the side punch die 31. Preferably, in order to facilitate the guiding of the downward movement of the upper mold and the positioning when the upper mold 21 assembly 2 is closed, a guide assembly is also included, and the guide assembly includes a guide protrusion provided on one of the stripping plate 16 and the lower mold 21 and a guide recess provided on the other of the stripping plate 16 and the lower mold 21 and matching the guide protrusion. As an alternative embodiment, the guide assembly may not be provided in this embodiment. Specifically, as Figure 5 As shown, the guide assembly includes a guide needle 10 that protrudes downward and is arranged at the bottom of the stripper plate 16, and a guide hole (not shown in the figure) that is arranged on the lower template 21. The guide hole is a semicircular guide hole that is arranged on the groove wall of the second mounting groove of the lower template 21. As an alternative embodiment, the guide assembly may also include a guide hole opened at the bottom of the stripper plate 16 and a guide needle 10 that protrudes upward and is arranged on the lower template 21.

[0062] like Fig. 9 As shown, a pressing plane 822 is formed on the outer side of the bottom surface of the upper mold driving ring 82, and a notch 823 is formed on the inner side of the bottom surface. The pressing plane 822 is suitable for pressing against the annular body 91 in the mold closing state. The notch 823 is used for the top surface of the inner cylinder of the mounting seat 51 to enter in the mold closing state, so as to avoid the top of the inner cylinder of the mounting seat 51. Fig. 9 As shown, a first flange 821 is formed on the top of the upper die driving ring 82, and a second flange ( Figure 5 (not shown), one end of the first elastic member 83 abuts against the bottom of the first flange 821, and the other end abuts against the top of the second flange. The first elastic member 83 can be a conventional tubular straight spring.

[0063] The side slider assembly 5 is the above-mentioned side slider assembly 5. The specific structure is not described in detail.

[0064] like Figure 5 and Figure 6As shown, the unloading support dual-purpose block 6 is movably mounted in the first mounting groove 50 in the middle of the mounting seat 51 and is arranged opposite to the unloading block 4. Figure 5 As shown, in the mold opening state, the bottom of the unloading support dual-purpose block 6 does not contact the bottom of the first mounting groove 50 on the mounting seat 51.

[0065] The bottom of the lower die driving ring 9 is formed with a pressing bevel that matches the slot 526, and the shape of the pressing bevel matches the shape of the V-shaped wall 524. During the stamping process in the mold closing state, the pressing bevel is pressed by the driving push rod assembly 8 to drive the slider 52 to move laterally, so that the forming part 527 stamps the outer ring of the thrust needle roller bearing cage to be processed fixed between the unloading block 4 and the unloading support dual-purpose block 6 to form the required positioning convex points, until the fixed plate 14 contacts the stripping plate 16 to complete the stamping of the positioning convex points.

[0066] Specifically, Figures 5 and 6 and Fig.10 As shown, the lower die driving ring 9 includes an annular body 91 and an inclined surface 92. A contact plane suitable for contacting the upper die driving ring 82 during the stamping process is formed on the top of the annular body 91. Before the stamping molding in the mold closing state, the bottom surface of the upper die driving ring 82 contacts the contact plane of the annular body 91. The inclined surface 92 is formed at the bottom of the annular body 91, and the outer wall of the inclined surface 92 is formed with a V-shaped matching wall surface that matches the V-shaped wall surface 524, and the V-shaped matching wall surface is a pressing inclined surface. A V-shaped slot 93 is formed between the bottom of the annular body 91 and the V-shaped matching wall surface for the first wall portion 522, specifically the V-shaped inclined surface, to be inserted.

[0067] like Figure 5 and Figure 6 As shown, the reset assembly 7 includes a balanced reset push rod 71 movably arranged in the lower mold plate 21 assembly 2, a reset plate 72 installed at the bottom of the balanced reset push rod 71, a reset member 73 installed between the reset plate 72 and the lower mold base 24, and a push rod 74 with one end connected to the reset plate 72 and the other end connected to the bottom of the unloading support dual-purpose block 6. The reset plate 72 is movably arranged in a second cavity (not shown in the figure) opened in the middle of the second lower mold pad. In the mold opening state, the unloading support dual-purpose block 6 floats above the bottom of the first mounting groove 50 under the action of the reset assembly 7 and the balanced reset push rod 71 extends out of the upper surface of the lower mold plate 21. In the stamping process in the mold closing state, the top of the balanced reset push rod 71 contacts the stripping plate 16 and moves downward, driving the reset plate 72, the push rod 74 and the unloading support dual-purpose block 6 to reset downward at the same time until the unloading support dual-purpose block 6 contacts the bottom of the first mounting groove 50.

[0068] The biasing member 32 is a biasing spring, and there are three of them, which are arranged in a triangle. Fig.11As shown, there are three sealing members 111 respectively fixed on the cover plate 11 of the upper die base 12 for sealing and fixing three bias springs. The top ends of the three bias springs respectively pass through the upper die base 12 and extend into the cover plate 11 of the upper die base 12 and abut against the sealing members 111.

[0069] like Figure 1 As shown, a convex bump 10' protruding axially upward is formed between the inner ring and the outer ring of the retainer, and the convex bump 10' is formed by integral stamping for convenience. Figure 8 As shown, a recessed portion 312 is provided at the bottom of the side punch die 31 , and a protruding portion 61 matching the recessed portion 312 is correspondingly provided on the unloading support dual-purpose block 6 .

[0070] The side molding device of this embodiment, such as Figure 5 The mold is shown in the open state, and the fixed plate 14 and the stop plate 15 are separated to form a discharge stroke. The punching push rod 74 does not contact the bottom surface of the upper die driving ring 82, that is, the punching push rod 74 is located above the upper die driving ring 82. The biasing member 32 is in a free state or an extended state. The first elastic member 83 is in a deformed state, specifically exerting an upward elastic force on the upper die driving ring 82, so that the top of the upper die driving ring 82 contacts the bottom of the stop plate 15.

[0071] like Figure 6 The figure shows the mold closing state. In the mold closing state, it is divided into two stages, the first stage is the positioning stage, and the second stage is the stamping and forming stage.

[0072] During the positioning stage, the upper template assembly 1 moves downward, and when the stripper plate 16 approaches the lower template 21, specifically 3 mm apart, the material strips on both sides of the thrust needle roller bearing retainer to be processed, i.e., the retainer process part, fit with the stripper plate 16, and the guide needle 10 has also entered the guide hole to play a positioning role. The side punch die 31 just sticks to the upper surface of the retainer process part, and the unloading support dual-purpose block 6 supports and lifts the retainer process part, and the downward pressure of the side punch die 31 on the retainer process part and the lifting force of the unloading support dual-purpose block 6 on the retainer are equal in magnitude and opposite in direction, that is, they reach a balance. The top of the balance reset rod contacts the bottom surface of the stripper plate 16. The punch press continues to move downward, and under the downward force of the punch press and the biasing force of the biasing member 32, the balance reset rod moves downward and pushes the reset plate 72 to reset downward. At the same time, the unloading support dual-purpose block 6 connecting the push rod 74 also retreats accordingly until the bottom surface of the stripping plate 16 is completely in contact with the top surface of the lower template 21. At this time, the bottom of the unloading support dual-purpose block 6 is in contact with the bottom of the first mounting groove 50, and the positioning stage has been completed.

[0073] During the stamping and forming stage, after the stripper plate 16 is completely fitted with the lower template 21, the discharge stroke is closed and gradually reduced to zero, that is, when the bottom surface of the fixed plate 14 is fitted with the top surface of the stop plate 15, the side punch die 31 moves upward. Due to the biasing force of the biasing member 32, the side punch die 31 will always be pressed and fixed on the retaining frame process part supported between the discharge support dual-purpose block 6 and the discharge block 4, ensuring the stability of the convex bump on the outer ring of the retaining frame in terms of positioning depth. At the same time, it also ensures that the side punch die 31 is always at a relatively high position during side punching, and the upper die pad is pressed down against the driving push rod 81 to the upper die driving Ring 82, and overcome the elastic force of the first elastic member 83 to move downward until the bottom of the upper die driving ring 82 fits with the contact plane of the annular body 91 of the lower die driving ring 9, as the fixed plate 14 carries the driving push rod 81 to press down the upper die driving ring 82 and the lower die driving ring 9 little by little, the inclined portion 92 of the lower die driving ring 9 pushes the slider 52 to move radially inward step by step, and the forming portion 527 stamps the outer ring wall surface of the retaining frame process part to form the positioning protrusions required, until the bottom surface of the fixed plate 14 and the top surface of the stop plate 15 are completely in contact, and the side punching forming action is completed. Subsequently, the process of material withdrawal is opposite to the above process and will not be repeated here. At this point, the entire one-stop side punching process is completed. The present invention can complete the positioning convex points of the circumferential design of the outer ring of the thrust needle roller bearing cage in one stop by designing a unique side slider assembly 5 and cooperating with the design of the inclined surface 92 of the lower mold drive ring 9. The positioning convex points have the same size, the roundness of the outer ring will not change, and the spacing between the positioning convex points will not have errors. The product has high precision and good performance. The problem of using the process of completing the whole circle of convex point molding in several times mentioned in the background technology is solved. The side molding device of the present invention can realize the side molding of 40-X (greater than or equal to 40) dense positioning convex points at one time.

[0074] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A side slider assembly, characterized in that: include: A plurality of sliders (52) are arranged at intervals along the circumferential direction, and any of the sliders (52) comprises: Ontology (521); A first wall portion (522) formed on one side of the top of the main body portion (521); A second wall portion (523) is formed on the other side of the top of the main body portion (521) and is opposite to and spaced from the first wall portion (522); A V-shaped wall surface (524) with an opening toward the second wall surface (523) is formed on the side of the first wall portion (522) facing the second wall portion (523); an inclined wall surface (525) extending obliquely upward is formed on the side of the second wall portion (523) facing the first wall portion (522); the V-shaped wall surface (524) and the inclined wall surface (525) are enclosed to form a slot (526); The second wall portion (523) has a top end on the side facing away from the first wall portion (522) forming a forming portion (527) extending outwards and used for punching and forming the positioning convex points required for the outer ring of the thrust needle roller bearing retainer to be processed; The mounting seat (51) is provided with sliding grooves (510) spaced apart along the circumferential direction and matched with the slider (52) one by one. The slider (52) is adapted to be moved radially inward in the sliding groove (510) to stamp and form the positioning protrusion by receiving the driving force of a lower die driving ring (9) movably placed in the sliding groove (510) and matching the shape of the sliding groove (510).

2. The side slider assembly according to claim 1, characterized in that: The mounting seat (51) is composed of two coaxially sleeved cylinders, the middle of the inner cylinder is open to form a first mounting groove (50) for mounting the unloading support dual-purpose block (6), the bottoms of the two cylinders are connected and the tops form an annular gap for the slide groove (510) to be set; A plurality of partition walls (511) are arranged at intervals in the annular gap and match the shape of the slider (52). A slide groove (510) is defined between any two adjacent partition walls (511), and the slide groove (510) radially penetrates the side walls of the two cylinders.

3. A side forming device for stamping and forming the positioning protrusions on the outer ring of a thrust needle roller bearing cage, the side forming device comprising an upper die assembly (1) having an upper die seat (12), a fixed pad, a fixed plate (14) and a stripper plate (16) arranged in sequence from top to bottom, and a lower die assembly (21) having a lower die seat (21), a lower die pad and a lower die seat (24) arranged in sequence from top to bottom, characterized in that: Also includes: A side punch die assembly (3), comprising a side punch die (31) movably arranged in the upper die assembly (1) and a biasing member (32) arranged between the top of the side punch die (31) and the upper die seat (12), wherein the biasing member (32) is suitable for applying a downward biasing force to the side punch die (31) in a mold closing state, and a plurality of positioning concave points (311) matching the positioning convex points to be formed are formed at circumferential intervals on the side wall of the side punch die (31), and in an open mold state, a movable gap (30) is reserved between the top of the side punch die (31) and the top of the upper die seat (12) for the side punch die (31) to move upward after the fixing plate (14) and the stripping plate (16) are attached to each other; A discharge block (4) is movably mounted in a second mounting groove in the middle of the side punch die (31); A driving push rod assembly, comprising a driving push rod (81) fixed on the fixed plate (14), an upper die driving ring (82) movably arranged in the stripping plate (16), and a first elastic member (83) arranged between the upper die driving ring (82) and the stripping plate (16), wherein the elastic force of the first elastic member (83) is less than the biasing force of the biasing member (32); in a mold opening state, a discharge stroke is provided between the fixed plate (14) and the stripping plate (16), the driving push rod (81) is not in contact with the upper die driving ring (82), the bottom surface of the upper die driving ring (82) is higher than the bottom surface of the stripping plate (16), and the bottom surface of the stripping plate (16) is higher than the bottom surface of the side punch die (31); A side slider assembly (5), wherein the side slider assembly (5) is the side slider assembly (5) according to any one of claims 1 and 2; A dual-purpose unloading and supporting block (6) is movably mounted in a first mounting groove (50) in the middle of the mounting seat (51) and is arranged opposite to the unloading block (4); The lower die driving ring (9) has a pressing bevel at its bottom that matches the slot (526), ​​and the pressing bevel matches the V-shaped wall (524). During the stamping process in the mold closing state, the pressing bevel is pressed by the driving push rod assembly (8) to drive the slider (52) to move laterally, so that the forming portion (527) stamps the outer ring of the thrust needle roller bearing retainer to be processed fixed between the unloading block (4) and the unloading support dual-purpose block (6) to form the required positioning convex point, until the fixing plate (14) contacts the stripping plate (16) to complete the stamping forming of the positioning convex point. A reset assembly (7), comprising a balanced reset push rod (71) movably arranged in the lower mold plate (21) assembly (2), a reset plate (72) installed at the bottom of the balanced reset push rod (71), a reset member (73) installed between the reset plate (72) and the lower mold base (24), and a push rod (74) with one end connected to the reset plate (72) and the other end connected to the bottom of the unloading support dual-purpose block (6); In the mold opening state, the unloading support dual-purpose block (6) is floated above the bottom of the first mounting groove (50) by the action of the reset assembly (7), and the balance reset push rod (71) extends out of the upper surface of the lower mold plate (21); in the stamping process in the mold closing state, the top of the balance reset push rod (71) contacts the stripping plate (16) and moves downward, thereby driving the reset plate (72), the push rod (74) and the unloading support dual-purpose block (6) to reset downward at the same time, until the unloading support dual-purpose block (6) contacts the bottom of the first mounting groove (50) to complete the stamping process.

4. The side forming device according to claim 3, characterized in that The lower die driving ring (9) comprises: An annular body (91) having a contact plane formed on its top suitable for contacting the upper die drive ring (82) during a stamping process; A sloped portion (92) is formed at the bottom of the annular body (91), and an outer wall of the sloped portion (92) is formed with a V-shaped matching wall surface that matches the V-shaped wall surface (524), and the V-shaped matching wall surface is the pressing slope surface; A V-shaped slot (93) for the first wall portion (522) to be inserted into is formed between the bottom of the annular body (91) and the V-shaped matching wall surface.

5. The side forming device according to claim 3, characterized in that: The biasing member (32) is a biasing spring, and there are three of them, which are arranged in a triangle.

6. The side forming device according to claim 4, characterized in that The outer side of the bottom surface of the upper mold driving ring (82) is formed with a pressing plane (822), and the inner side of the bottom surface is formed with a notch (823) recessed upwards, and the pressing plane (822) is suitable for pressing against the annular body (91) in the mold closing state; and / or A first flange (821) is formed at the top of the upper mold drive ring (82), and a second flange opposite to the first flange (821) is formed at the bottom of the stripping plate (16). One end of the first elastic member (83) abuts against the bottom of the first flange (821), and the other end abuts against the top of the second flange.

7. The side forming device according to claim 3, characterized in that A second elastic member (33) is provided between the side punch die (31) and the discharge block (4), and the second elastic member (33) is suitable for applying a downward biasing force to the discharge block (4), and the elastic force of the second elastic member (33) is smaller than the biasing force of the biasing force.

8. The side forming device according to any one of claims 3 to 7, characterized in that: It also includes a guide component, which includes a guide protrusion arranged on one of the stripping plate (16) and the lower template (21) and a guide recessed portion matched with the guide protrusion arranged on the other of the stripping plate (16) and the lower template (21).

9. The side forming device according to claim 8, characterized in that The guide assembly comprises a guide needle (10) which is arranged at the bottom of the stripper plate (16) and protrudes downward and extends, and a guide hole which is arranged on the lower template (21).

10. The side forming device according to claim 3, characterized in that A recessed portion (312) is provided at the bottom of the side punch die (31), and a protruding portion (61) matching the recessed portion (312) is provided on the dual-purpose unloading support block (6), and the recessed portion (312) and the protruding portion (61) cooperate to form an axially upwardly protruding bump (10') between the inner ring and the outer ring of the thrust needle roller bearing retainer to be processed.

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