Rack adjustment block riveting forming device and forming process

Abstract

The present invention relates to the technical field of riveting equipment for steering gear components. The present invention provides a rack adjustment pressure block riveting forming device and forming process. The forming device is used to rivet the pressure block grinding disc onto the pressure block base. The pressure block grinding disc has a riveted portion. The pressure block base is provided with a groove. The bottom wall of the groove has a riveted hole for accommodating the riveted portion. The forming device includes a riveting platform, a lower pressure head and an upper head. The riveting platform is provided with a concave hole. The lower pressure head slides up and down above the riveting platform; the upper head slides up and down in the concave hole. The lower pressure head is configured to slide downward and press against the upper end face of the riveted portion. The upper head is configured to slide upward and press against the lower end face of the riveted portion. The lower pressure head and the upper head cooperate with each other to deform the riveted portion and embed it into the inner circumferential wall of the riveted hole. Through the above technical solution, the problems of the extension of the service life of the adjustment pressure block pressed by interference fit in the related art, the looseness between the pressure block grinding disc and the pressure block base, and the poor use effect of the adjustment pressure block are solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of riveting equipment for steering gear components, and in particular, to a riveting and forming device and a forming process for a rack adjustment pressing block. Background Art

[0002] In the steering gear of a car, the rack pressure block, also known as the adjustment pressure block, is a widely used key component used to pre-tighten the rack. The clearance between the pressure block and the rack is controlled by adjusting the nut, thereby adjusting the axial movement force of the steering rack.

[0003] The rack adjustment pressure blocks in the existing technology are mostly composed of a pressure block base and a pressure block grinding disc. The pressure block base is cylindrical as a whole, and the upper end of the cylinder has a groove that matches the shape of the pressure block grinding disc, and a rivet hole is opened in the middle of the groove; the pressure block grinding disc is made of wear-resistant material, and the pressure block grinding disc is provided with a rivet part that cooperates with the rivet hole; before use, the pressure block grinding disc must be pre-installed into the groove at the upper end of the pressure block base, and the rivet part must be installed into the rivet hole.

[0004] During assembly, the two are typically riveted together using a riveting machine. Current riveting machines often rely on interference fit, where the riveted portion is slightly larger than the rivet hole, securing it within the hole. This traditional fixing method can lead to loosening between the grinding disc and base of the adjustment block as it is used, resulting in poor performance. Therefore, existing technologies need to be optimized to reduce the risk of loosening between the grinding disc and base, and improve the stability of the adjustment block. Summary of the Invention

[0005] In order to overcome the above-mentioned defects, an embodiment of the present invention provides a rack adjustment block riveting forming device and forming process, which solves the problem in the related art that the use time of the adjustment block pressed by interference fit is prolonged, and the grinding plate of the block and the base of the block are loose, resulting in poor use effect of the adjustment block.

[0006] The cam is secured to the bottom of the base and has a slot for securing the cam to the top of the base so that the cam can slide back and forth to engage the lower edge of the base, thereby securing the cam to the bottom of the base.

[0007] For example, in a rack adjustment block riveting forming device provided by at least one embodiment of the present invention, the lower end of the lower pressure head has a lower boss, and the upper end of the upper head has an upper boss, and the peripheral wall of the upper boss protrudes outward from the peripheral wall of the lower boss; the upper boss and the lower boss can approach each other and squeeze the riveted part so that the riveted part protrudes outward and deforms and embeds into the inner peripheral wall of the riveted hole.

[0008] For example, at least one embodiment of the present invention provides a rack adjustment block riveting and forming device, further comprising:

[0009] The supporting sleeve is slidably arranged in the concave hole, and is used to support the pressure block base and drive the pressure block base to move upward and protrude from the concave hole. The upper head is slidably arranged in the supporting sleeve.

[0010] For example, in a rack adjustment pressing block riveting forming device provided by at least one embodiment of the present invention, the device further includes a loading unit arranged on one side of the riveting platform, and a transfer unit located between the loading unit and the riveting platform, wherein the loading unit is used to supply the pressing block grinding discs one by one, and the transfer unit is used to support the pressing block base and receive the pressing block grinding disc supplied by the loading unit; a feeding arm is provided on the riveting platform for sliding in the horizontal direction, and the feeding arm has a clamping unit capable of clamping the pressing block base supported on the transfer unit, and the clamping unit can drive the pressing block base and the pressing block grinding disc to be transferred from the transfer unit to the concave hole under the translation action of the feeding arm, and the clamping unit includes:

[0011] A sliding seat is slidably arranged on the feeding arm;

[0012] Two clamping jaws are swingably arranged on the sliding seat, and the two clamping jaws can swing toward each other to clamp the outer peripheral wall of the pressing block base.

[0013] For example, in a rack adjustment briquette riveting and forming device provided by at least one embodiment of the present invention, there are two clamping units, one of which is used to clamp the briquette base to be riveted on the transfer unit to transfer the briquette base and the briquette grinding disc to the concave hole, and the other clamping unit is used to clamp the briquette base after being pressed at the concave hole to remove the briquette base and the briquette grinding disc after being riveted.

[0014] For example, in a rack adjustment block riveting and forming device provided in at least one embodiment of the present invention, the transfer unit includes:

[0015] A transfer bracket is rotatably arranged on one side of the riveting platform, and the transfer bracket is provided with a plurality of support platforms for supporting the briquetting base;

[0016] A transfer hanger is horizontally slidably arranged on one side of the riveting platform and can move horizontally between the loading unit and the transfer unit;

[0017] The transfer hanging head is set on the transfer hanging seat for sliding up and down. The transfer hanging head is configured to slide downward to take away the compressed grinding disc provided by the loading unit, and to move horizontally to the top of the transfer unit under the drive of the transfer hanging seat to unload the compressed grinding disc to the compressed base supported by the support platform.

[0018] For example, in a rack adjustment block riveting and forming device provided in at least one embodiment of the present invention, the loading unit includes:

[0019] A feeding cylinder is provided on a side of the transfer bracket away from the riveting platform, and a feeding slide extending in a spiral is provided on the inner wall of the feeding cylinder;

[0020] A loading tray is rotatably connected to the inner periphery of the feeding cylinder and is located below the loading chute. A loading cavity is formed above the loading tray for carrying the pressed grinding disc to feed the loading chute.

[0021] The loading chute can receive the pressed grinding disc in the loading cavity under the rotation of the loading tray, and make the pressed grinding disc slide along the loading chute to be delivered to the transfer hanging head.

[0022] For example, in a rack adjustment block riveting and forming device provided by at least one embodiment of the present invention, the loading unit further includes:

[0023] A screening track is provided on the feeding cylinder and is in communication with the discharge end of the feeding chute, and is used for supplying the pressed grinding discs to the transfer head;

[0024] The bottom screen bar is arranged at the lower edge of the screening track and is used to support the bottom of the pressed grinding disc;

[0025] The upward inclined screen bars are arranged at the upper edge of the screening track and above the bottom supporting screen bars. The upward inclined screen bars gradually spiral downward and approach the bottom supporting screen bars to screen out unqualified pressed grinding discs.

[0026] For example, in a rack adjustment block riveting and forming device provided by at least one embodiment of the present invention, a return port is provided on the side wall of the feeding cylinder, and the feeding unit further includes:

[0027] A material return cover is arranged on the outer periphery of the feeding cylinder;

[0028] The return track is spirally arranged between the return material cover and the feed cylinder. The feed cylinder, the return material cover and the return track can enclose a return cavity with an upward opening. The return cavity is used to receive the pressed grinding discs screened out by the upward-inclined screen bars and guide the pressed grinding discs to flow back to the return material port.

[0029] According to another aspect, at least one embodiment of the present invention further provides a rack adjustment block riveting and forming process, which uses the aforementioned rack adjustment block riveting and forming device to perform the process, including the following steps:

[0030] Step S1: feeding the pressed grinding sheets one by one using the feeding unit;

[0031] Step S2: grabbing the pressed grinding disc in the loading unit and installing the pressed grinding disc on the pressed base of the transfer unit;

[0032] Step S3: using the clamping unit of the feeding arm to synchronously transfer the assembled pressing block base and pressing block grinding disc on the transfer unit to the concave hole of the riveting platform;

[0033] Step S4: the lower pressure head moves downward until it contacts the upper end surface of the pressing block grinding plate, the lower pressure head and the supporting sleeve move downward synchronously to move the pressing block base downward into the concave hole, the upper head moves upward and presses against the lower end surface of the riveted portion, the lower pressure head and the upper head cooperate and squeeze up and down to deform the riveted portion and embed it into the inner peripheral wall of the riveted hole of the pressing block base, the supporting sleeve moves upward and lifts the riveted pressing block base until it protrudes above the concave hole;

[0034] Step S5: the clamping unit clamps the pressing block base, and transfers the riveted pressing block base and the pressing block grinding disc under the translation drive of the feeding arm.

[0035] The beneficial effects of the embodiments of the present invention are:

[0036] In the present invention, by applying pressure from top to bottom simultaneously, the riveted part is compressed axially and expanded radially at the same time, forming a tight bond with the inner wall of the riveted hole and embedding into the inner wall of the riveted hole. Compared with the traditional interference fit method, the reliability and stability of the connection are improved. The bidirectional pressure from top to bottom makes the deformation of the riveted part more uniform, avoids the problems of local stress concentration and uneven deformation that may be caused by unidirectional pressure, and further enhances the connection strength. This structural design does not need to rely on excessive interference, reduces stress during assembly, reduces the risk of the pressing block grinding plate and the pressing block base loosening during use, and extends the service life of the adjustment pressing block. The lower pressure head, the upper head and the axis of the concave hole are arranged to coincide with each other, ensuring that the line of action of the force during the riveting process is consistent with the axis of the riveted part, making the deformation process more controllable and improving the stability of the riveting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0038] Figure 1 A schematic diagram of the overall structure of a molding device in one embodiment of the present invention;

[0039] Figure 2 for Figure 1 A schematic structural diagram of a partial cross-section of the concave hole, the lower pressure head, the upper pressure head, the pressing block base and the pressing block grinding plate joint in the embodiment;

[0040] Figure 3 for Figure 2 A partial enlarged view of point A in the embodiment of FIG;

[0041] Figure 4 for Figure 1 A schematic diagram of the structure between the pressing block base and the pressing block grinding plate in the embodiment;

[0042] Figure 5 for Figure 1 A structural diagram of the relative positions of the transfer unit and the riveting platform in the embodiment;

[0043] Figure 6 for Figure 1 A schematic structural diagram of a partial cross-section of the transfer unit and the loading unit and their working coordination in the embodiment;

[0044] Figure 7 for Figure 1 A schematic structural diagram of the loading unit in the embodiment of FIG.

[0045] Figure 8 for Figure 1 A schematic structural diagram of the joint between the lower pressure head and the pressure block base (partial cross-section of the detection wheel) in the embodiment;

[0046] Figure 9 for Figure 1 A schematic structural diagram of a partial cross section of the embodiment in which the riveted portion is embedded into the inner wall of the riveted hole after the lower riveting is completed;

[0047] Figure 10 for Figure 9 A partial enlarged view of point B in the embodiment (only one embodiment of the riveting portion being embedded in the riveting hole);

[0048] In the figure: 1, riveting platform, 11, concave hole, 21, lower pressure head, 211, slide, 212, detection slide, 213, detection wheel, 214, spring, 215, lower boss, 22, upper head, 221, upper boss, 31, pressure block base, 311, rivet hole, 312, groove, 32, pressure block grinding disc, 321, riveting part, 4, supporting sleeve, 5, feeding unit, 51, feeding plate, 52, feeding cylinder, 521, feeding cavity, 522, Return material port, 53, loading slide, 54, screening track, 541, front transition section, 542, screening section, 543, rear transition section, 544, smooth section, 55, bottom support screen bars, 56, upward inclined screen bars, 57, return material cover, 571, reflux chamber, 58, reflux track, 6, transfer unit, 61, transfer bracket, 62, support platform, 63, transfer hanger, 64, transfer hanging head, 7, feed arm, 8, clamping unit, 81, sliding seat, 82, clamping claw. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0050] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0051] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0053] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0054] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0055] like Figures 1 to 10 The figure shows a rack adjustment pressure block riveting and forming device according to one embodiment of the present invention. A recessed hole 11 is provided on the riveting platform 1 of the rack adjustment pressure block riveting and forming device, and a pressure block base 31 is placed in the recessed hole 11. The pressure block base 31 is a cylindrical structure with a groove 312 at its upper end. The bottom of the groove 312 defines a rivet hole 311 extending along the axis of the pressure block base 31 and extending vertically through the bottom. The groove 312 is connected to the rivet hole 311. The pressure block grinding disc 32 is placed in the groove 312, and a rivet portion 321 is provided at its bottom for riveting into the rivet hole 311. The pressure block grinding disc 32 is generally arc-shaped, with the rivet portion 321 located on the outer side of the arc. The lower ram 21 is located above the riveting platform 1 and can slide in the vertical direction. The upper ram 22 is located in the recessed hole 11 and can also slide in the vertical direction. The lower ram 21 is located above the upper ram 22, and the rivet hole 311 and the axis of the recessed hole 11 coincide with each other.

[0056] During the riveting operation, the lower ram 21 slides downward, pressing the upper end surface of the rivet 321. The briquette base 31 moves downward into the recessed hole 11, while the upper ram 22 slides upward along the recessed hole 11, pressing the lower end surface of the rivet 321. Under the combined action of the upper and lower pressures, the rivet 321 deforms, and the material flows outward and rivets into the inner wall of the rivet hole 311, firmly connecting the briquette grinding disc 32 to the briquette base 31. The strength of the lower ram 21 and the upper ram 22 is greater than that of the briquette grinding disc 32.

[0057] The lower end of the lower pressing head 21 matches the shape of the upper end of the pressing block grinding disc 32, so that the force is evenly transmitted during riveting to avoid accidental deformation. At the same time, a slide groove 211 is provided near the lower end of the side wall of the lower pressing head 21. A detection slide 212 is provided in the slide groove 211 to slide vertically. A detection wheel 213 is rotatably provided on the detection slide 212. A spring 214 in a compressed state is provided between the detection slide 212 and the top side wall of the slide groove 211; the spring 214 is provided in a compressed state. 14 provides a force to the detection slide 212 to approach the briquette grinding disc 32; during the downward sliding of the lower pressure head 21, the detection wheel 213 is squeezed and contacted with the upper end of the briquette grinding disc 32 before the lower end of the lower pressure head 21, and the upper end surface of the briquette grinding disc 32 is detected and corrected by the detection wheel 213, so as to avoid the briquette base 31 and / or the briquette grinding disc 32 from rotating along the circumferential direction of the briquette base 31, thereby improving the accuracy of the assembly position of the briquette base 31 and / or the briquette grinding disc 32.

[0058] By applying pressure from both top and bottom simultaneously, the rivet portion 321 is compressed axially while expanding radially, embedding into the inner wall of the rivet hole 311, forming a tight bond with the inner wall of the rivet hole 311, and improving the reliability and stability of the connection compared to the traditional interference fit method. The bidirectional pressure applied from top to bottom makes the deformation of the rivet portion 321 more uniform, avoids the problems of local stress concentration and uneven deformation that may be caused by unidirectional pressure, and further enhances the connection strength. This structural design does not require excessive interference, reduces stress during assembly, reduces the risk of loosening of the briquette grinding disc 32 and the briquette base 31 during use, and extends the service life of the adjustment briquette. The lower pressure head 21, the upper head 22 and the axis of the recessed hole 11 are arranged to coincide with each other, ensuring that the line of action of the force during the riveting process is consistent with the axis of the rivet portion 321, making the deformation process more controllable and improving the stability of the riveting quality.

[0059] In some examples, the molding device structure is refined, e.g. Figures 1 to 4As shown, a lower boss 215 is provided at the lower end of the lower pressing head 21. When the lower pressing head 21 slides downward, the lower boss 215 presses against the upper end of the riveted portion 321. An upper boss 221 is provided at the upper end of the upper head. When the upper head 22 slides upward, the upper boss 221 presses against the lower end of the riveted portion 321, and the upper boss 221 slides in the riveted hole 311. With the help of the upper boss 221 and the lower boss 215 squeezing up and down, the riveted portion 321 is deformed and extends to all sides, and finally embedded in the inner circumferential wall of the riveted hole 311, so that the riveted portion 321 is tightly combined with the inner wall of the riveted hole 311.

[0060] In some examples, the molding device structure is refined, e.g. Figures 1 to 5 As shown, a support sleeve 4 is disposed within the recessed hole 11 of the rack adjustment pressure block riveting and forming device. The support sleeve 4 can slide up and down along the recessed hole 11. The upper end surface of the support sleeve 4 supports the lower end of the pressure block base 31, and the upper plug 22 slides within the central hole within the support sleeve 4. The shape of the recessed hole 11 matches the outer periphery of the pressure block base 31, forming a tight fit.

[0061] During the riveting operation, the pressure block base 31 is placed on the supporting sleeve 4, and the lower pressing head 21 presses the riveted portion 321 downward. The lower pressing head 21 and the supporting sleeve 4 slide downward synchronously to ensure that the pressure block base 31 slides completely into the recessed hole 11. The recessed hole 11 limits the outer periphery of the pressure block base 31, preventing it from radial displacement and deformation during the riveting process. The upper head 22 slides upward to press against the lower end surface of the riveted portion 321. At the same time, the upper head 22 slides within the supporting sleeve 4 to ensure that the pushing action on the riveted portion 321 is accurate and effective.

[0062] The setting of the supporting sleeve 4 provides stable support for the pressure block base 31, ensuring a clear force transmission path during the riveting process, so that the riveted portion 321 can be evenly stressed, thereby improving the riveting quality. The matching design of the concave hole 11 and the outer periphery of the pressure block base 31 limits the horizontal movement of the pressure block base 31, avoids riveting deviation caused by the shaking of the pressure block base 31, ensures the centering of the riveted portion 321 and the riveted hole 311, and further improves the reliability of the connection. The nested structural design of the supporting sleeve 4 and the upper head 22 allows the two to be independent of each other and cooperate with each other during movement, ensuring the pushing effect of the upper head 22 on the riveted portion 321 and providing stable support for the pressure block base 31. This structural design can adapt to pressure block bases 31 of different sizes. By replacing the corresponding supporting sleeve 4 and concave hole 11 mold, riveting operations for pressure blocks of various specifications can be realized, thereby improving the versatility and applicability of the equipment.

[0063] In some examples, the molding device structure is refined, e.g. Figures 1 to 7As shown, a loading unit 5 and a transfer unit 6 are provided on one side of the riveting platform 1 of the rack adjustment press unit, and a feeding arm 7 and a clamping unit 8 are provided on the riveting platform 1. The loading unit 5 is used to store and provide the press grinding disc 32, and the transfer unit 6 is used to transfer the press base 31 and the press grinding disc 32 from different locations to the clamping unit 8 for assembly.

[0064] The feed arm 7 slides horizontally on the riveting platform 1. The sliding base 81 of the clamping unit 8 slides up and down on the feed arm 7. The two clamping jaws 82 are swingably mounted on the sliding base 81, and the two clamping jaws 82 swing in opposite directions. When the clamping jaws 82 swing, their inner surfaces can contact the outer periphery of the pressure block base 31, thereby clamping the pressure block base 31.

[0065] During operation, the loading unit 5 transports the compacted grinding disc 32 to the designated location. The transfer unit 6 transfers the compacted base 31 from the external conveying mechanism to the bottom of the clamping unit 8 and places the compacted grinding disc 32 on the compacted base 31. The sliding seat 81 of the clamping unit 8 slides downward, allowing the clamping jaws 82 to reach the outer periphery of the compacted base 31. The two clamping jaws 82 swing in opposite directions to clamp the compacted base 31, and the sliding seat 81 of the clamping unit 8 slides upward. The feed arm 7 then slides horizontally, transporting the clamping unit 8 and the compacted base 31 and compacted grinding disc 32 it holds to the top of the recessed hole 11 for subsequent riveting operations.

[0066] The coordinated work of the loading unit 5 and the transfer unit 6 realizes the automatic loading of the briquette grinding disc 32 and the briquette base 31, reduces manual intervention and improves production efficiency. The design of the clamping jaws 82 of the clamping unit 8 swinging in opposite directions makes the clamping process more stable and reliable, and can effectively prevent the briquette base 31 from shaking or falling during transportation, thereby ensuring the loading accuracy. The horizontal sliding of the feed arm 7 and the up and down sliding structure of the clamping unit 8 enable the briquette base 31 and the briquette grinding disc 32 to be accurately transported to the top of the concave hole 11, ensuring the smooth progress of the riveting operation. This automated loading and transfer system improves the continuity and stability of the entire production process, reduces labor costs, and also reduces production errors caused by human factors, thereby improving the consistency of product quality.

[0067] In some examples, the molding device structure is refined, e.g. Figures 1 to 5 As shown, the rack adjustment pressing block riveting forming device has two clamping units 8, namely a first clamping unit 8 and a second clamping unit 8. The first clamping unit 8 is used to clamp the pressing block base 31 before riveting and perform loading, and the second clamping unit 8 is used to clamp the pressing block base 31 after riveting and perform unloading.

[0068] The sliding seats 81 of the two clamping units 8 are both slidably arranged on the feeding arm 7, and the clamping claws 82 are swingably arranged on the sliding seat 81. The feeding arm 7 slides in the horizontal direction, driving the two clamping units 8 to move synchronously.

[0069] During operation, the first clamping unit 8 moves to the bottom of the transfer unit 6 under the drive of the feeding arm 7, clamps the assembled briquette base 31 and briquette grinding disc 32, and then transports them to the top of the recessed hole 11 for riveting operation. While the first clamping unit 8 is loading, the second clamping unit 8 moves to the other side of the recessed hole 11 and waits. When the riveting operation is completed, the second clamping unit 8 clamps the riveted briquette base 31, and at the same time, the feeding arm 7 slides and drives the two clamping units 8 to move synchronously. The first clamping unit 8 transports the clamped briquette base 31 and briquette grinding disc 32 to the top of the recessed hole 11, and the second clamping unit 8 transports the riveted briquette base 31 and briquette grinding disc 32 to the finished product collection area, realizing the simultaneous loading and unloading operations, and repeating this cycle to achieve continuous riveting operation.

[0070] The two clamping units 8 enable parallel operation of the loading and unloading processes, reducing equipment waiting time and significantly improving production efficiency. Through division of labor and cooperation, the first clamping unit 8 focuses on loading, while the second clamping unit 8 focuses on unloading, avoiding the time waste and operational errors caused by frequent switching tasks within the same clamping unit 8. This structural design makes the entire riveting process smoother and more continuous, fully utilizing the equipment's operating time and improving equipment utilization. The two clamping units 8 move synchronously under the drive of the feed arm 7, simplifying the design of the control system, reducing the complexity and failure rate of the equipment, and improving the stability and reliability of the production process.

[0071] In some examples, the molding device structure is refined, e.g. Figures 1 to 6 As shown, the transfer unit 6 of the rack adjustment briquetting riveting forming device includes a transfer bracket 61 rotatably arranged on one side of the riveting platform 1. A plurality of support platforms 62 are provided on the transfer bracket 61, and the support platforms 62 are used to support the briquetting base 31. A transfer hanger 63 is slidably arranged on the same side of the riveting platform 1, and a transfer hanging head 64 is slidably arranged on the transfer hanger 63 and is located above the loading unit 5.

[0072] After the pressed grinding disc 32 is transported to the designated position by the loading unit 5, the transfer head 64 slides downward, its lower end surface contacts the upper end surface of the pressed grinding disc 32, and removes the pressed grinding disc 32 by the gas negative pressure adsorption method in the prior art; the transfer hanger 63 slides horizontally, driving the transfer head 64 to move above the transfer bracket 61; the transfer head 64 slides downward again, placing the pressed grinding disc 32 into the groove 312 at the upper end of the pressed base 31 on the support 62, completing the assembly of the pressed grinding disc 32 and the pressed base 31. The transfer bracket 61 can rotate around its rotation center to transfer the assembled workpiece to the next station.

[0073] The rotating arrangement of the transfer bracket 61 and the sliding cooperation of the transfer hanger 63 realize the automated transfer process of the briquette grinding disc 32 from material collection to placement, avoiding the positioning deviation and inefficiency caused by manual handling. The support of the support 62 on the briquette base 31 ensures the positioning accuracy during assembly. The up and down sliding action of the transfer hanger 64 precisely controls the placement depth of the briquette grinding disc 32, ensuring accurate alignment of the riveted portion 321 with the riveted hole 311. This structural design replaces manual labor with mechanical automation, improving the stability and consistency of the assembly process and ensuring the accuracy of subsequent riveting operations.

[0074] In some examples, the molding device structure is refined, e.g. Figures 1 to 7 As shown, the loading unit 5 of the rack-adjustable briquetting and riveting device includes a loading tray 51 rotatably mounted on a side of a transfer bracket 61 away from the riveting platform 1. A feed cylinder 52 is sleeved around the outer periphery of the loading tray 51 and is rotatably connected to the loading tray 51, forming a loading chamber 521 therebetween for carrying the briquetting and grinding disc 32. A loading chute 53 is spirally mounted on the inner sidewall of the feed cylinder 52, with its bottom overlapping the upper end surface of the loading tray 51.

[0075] When the loading tray 51 rotates, the briquetting grinding disc 32 rotates synchronously with the loading tray 51. Under the action of centrifugal force and the guidance of the spiral slide, the grinding disc slides from bottom to top along the edge of the loading tray 51 to the entrance of the loading slide 53, and then slides along the spiral extension direction of the loading slide 53 to the top of the feeding cylinder 52, and finally is discharged from the discharge end of the slide to enter the next process.

[0076] The design of the spiral loading chute 53 utilizes the synergistic effects of centrifugal force and gravity to automatically and orderly transition the compressed grinding discs 32 from a stacked state to a single-file conveying state, preventing the compressed grinding discs 32 from jamming against each other. Simultaneously, the pushing action between the compressed grinding discs 32 propels them along the loading chute 53. The rotational connection between the loading tray 51 and the feed drum 52 ensures the continuity of the grinding disc conveying process. The overlapping structure allows the grinding discs to smoothly transition to the chute, reducing collisions and damage during conveyance. This loading method achieves automatic sorting and conveying of the grinding discs through mechanical transmission, improving loading efficiency and reducing the labor intensity of manually sorting the grinding discs.

[0077] In some examples, the molding device structure is refined, e.g. Figures 1 to 7 As shown, the feeding unit 5 of the rack-adjustable briquette riveting and forming device is equipped with a screening track 54 at the upper end of the feed barrel 52. Its feed end is connected to the discharge end of the feeding chute 53, and the discharge end is located below the transfer head 64. The lower edge of the screening track 54 is equipped with bottom-supporting screen bars 55 to support the bottom of the briquette grinding disc 32 (i.e., the side of the briquette grinding disc 32 that contacts the groove 312). The upper edge is equipped with upward-inclined screen bars 56. The upward-inclined screen bars 56 are spiral-shaped and gradually decrease in height from the feed end to the discharge end. The ends of the upward-inclined screen bars 56 are slightly curved away from the feeding tray 51 to facilitate the removal of unqualified briquette grinding discs 32 from the screening track 54.

[0078] When the pressed grinding disc 32 enters from the feed end of the screening track 54, the pressed grinding disc 32 in qualified state (i.e., the rivet portion 321 is facing downward and the pressed grinding disc 32 is roughly horizontal) is supported by the bottom screen bar 55 and slides along the track to the discharge end; the grinding disc in unqualified state (such as tilted or inverted) is blocked by the upward screen bar 56 due to the offset of the center of gravity and tilts and slides in the direction away from the upward screen bar 56, thereby realizing state screening.

[0079] The specific screening track 54 includes a front transition section 541, a screening section 542, a rear transition section 543, and a smooth section 544 connected in sequence; the front transition section 541 is connected to the feeding slide 53; the front transition section 541 is used to gradually guide the horizontally sliding briquette grinding disc 32 to an inclined state, at this time, the rivet portion 321 of the briquette grinding disc 32 in a qualified state overlaps the upper end of the bottom screen bar 55, and the remaining portion is located between the bottom screen bar 55 and the upward inclined screen bar 56 and does not form an overlap with the upward inclined screen bar 56; the briquette grinding disc 32 in an unqualified state, such as the rivet portion 321 directly slides outward from the bottom screen bar 55; or the rivet portion 321 slides outward directly from the bottom screen bar 55 Although 21 is overlapped on the bottom screen bar 55, the rest of the part is overlapped on the upward inclined screen bar 56. As the briquette grinding plate 32 slides, under the squeezing action of the upward inclined screen bar 56, the briquette grinding plate 32 tilts and flips in the direction away from the upward inclined screen bar 56, and finally falls from the screening track 54, completing the screening of the briquette grinding plate 32; the briquette grinding plate 32 that is in a qualified state after screening is adjusted from an inclined state to a horizontal state under the guidance of the rear transition section 543, and finally transported to the end of the smooth section 544, waiting for the transfer crane 64 to pick up the material. A limit piece is set at the end of the smooth section 544 to prevent the briquette grinding plate 32 from falling from the smooth section 544.

[0080] The cooperation between the bottom screen bar 55 and the upward inclined screen bar 56 forms an automatic screening mechanism for the posture of the pressed grinding disc 32. Through the design of gravity and the inclination angle of the upward inclined screen bar 56, it is ensured that only grinding discs with the correct posture enter the subsequent process, avoiding riveting deviation caused by incorrect grinding disc posture. The gradual height design of the spiral upward inclined screen bar 56, that is, the gap between the bottom screen bar 55 and the upward inclined screen bar 56 gradually becomes smaller, so that the pressed grinding disc 32 is subjected to the pushing force from the upward inclined screen bar 56, causing the pressed grinding disc 32 to tilt and flip in the direction away from the upward inclined screen bar 56, and finally fall from the screening track 54, completing the automatic screening of the state of the pressed grinding disc 32; no additional power drive is required, simplifying the screening process. This structure effectively improves the qualified rate of the grinding disc posture entering the riveting process, reduces the scrap rate caused by incorrect posture, and improves the overall production quality.

[0081] In some examples, the molding device structure is refined, e.g. Figures 1 to 7 As shown, a return port 522 is provided on the side wall of the feed barrel 52 of the rack-adjustable briquette riveting and forming device, and a return cover 57 is disposed on the outer periphery of the feed barrel 52 to form a reflux chamber 571 between the feed barrel 52 and the feed barrel 52. A return track 58 is spirally disposed within the reflux chamber 571, with its feed end receiving unqualified briquette grinding discs 32 screened out by the upward-inclined screen bars 56, and its discharge end communicating with the return port 522.

[0082] When the unqualified grinding discs slide from the upward inclined screen bar 56 to the return track 58, they slide downward along the spiral return track 58 under the action of gravity, and finally re-enter the loading chamber 521 through the return port 522, mix with the pressed grinding discs 32 on the loading tray 51, and then participate in the screening process again.

[0083] The return track 58 and return port 522 form an automatic return system for unqualified grinding discs, allowing them to re-enter the loading process without manual collection, thus avoiding material waste and manual intervention. The spiral return track 58 extends the return path for the grinding discs, ensuring they smoothly return to the loading chamber 521, matching the rotational rhythm of the loading tray 51. This structure enables material recycling, improves material utilization, and reduces material accumulation on the production line, creating a closed-loop loading system and enhancing the continuity and stability of equipment operation.

[0084] A rack adjustment block riveting forming process uses the forming device described above to operate, combined with Figures 1 to 8 The specific steps are as follows:

[0085] Step S1: loading the compacted grinding disc 32;

[0086] The rotation of the loading tray 51 drives the compacted grinding discs 32 to move within the loading chamber 521 formed by the feed barrel 52 and the loading tray 51. Under the action of centrifugal force, the grinding discs slide along the edge of the loading tray 51 to the entrance of the loading chute 53, and then slide upward along the spiral loading chute 53. When the grinding discs enter the screening track 54, the bottom-supporting screen bars 55 lift the bottom of the grinding discs, and the upward-inclined screen bars 56 screen out grinding discs with unqualified posture. Qualified grinding discs continue to slide under the transfer head 64.

[0087] Step S2: transporting and assembling the compacted grinding disc 32;

[0088] The external conveying mechanism conveys the briquette base 31 to the support platform 62 of the transfer bracket 61, and the transfer hanging head 64 slides downward to remove the briquette grinding disc 32 at the discharge end of the screening track 54. The transfer hanging seat 63 slides to convey the grinding disc to the top of the transfer bracket 61, and the transfer hanging head 64 slides downward again to place the grinding disc into the groove 312 of the briquette base 31 to complete the assembly.

[0089] Step S3: transporting the compact base 31 and the compact grinding plate 32;

[0090] The transfer bracket 61 rotates to transfer the assembled compact base 31 and compact grinding sheet 32 ​​to the bottom of the first clamping unit 8 .

[0091] Step S4: clamping the pressing block base 31 and the pressing block grinding plate 32;

[0092] The sliding seat 81 of the first clamping unit 8 slides downward, the clamping claw 82 swings to clamp the outer periphery of the pressing block base 31 , and the feeding arm 7 slides to transport the clamping unit 8 and the workpiece to above the recessed hole 11 .

[0093] Step S5: riveting and blanking operations;

[0094] The lower pressing head 21 slides downward to squeeze the upper end surface of the riveted part 321, and the upper pressing head 22 slides upward to push the lower end surface of the riveted part 321. The supporting sleeve 4 slides downward to allow the pressure block base 31 to enter the recessed hole 11. The recessed hole 11 limits the outer periphery of the pressure block base 31. The riveted part 321 is deformed under the action of the upper and lower pressures and is riveted into the inner wall of the riveted hole 311.

[0095] The lower pressing head 21 slides upward, and the supporting sleeve 4 slides upward to push the pressing block base 31 out of the recessed hole 11. The second clamping unit 8 clamps the riveted workpiece, and the feed arm 7 slides to transport it to the finished product collection area; then the feed arm 7 slides again, the first clamping unit 8 returns to the loading position, and the second clamping unit 8 is located on the side of the recessed hole 11 waiting for unloading, and the operation is cyclic.

[0096] Through the spiral slide and screening mechanism of the feeding unit 5, the automatic sorting and posture screening of the pressed grinding discs 32 are realized, which improves the feeding accuracy and efficiency. The coordinated action of the transfer unit 6 and the clamping unit 8 ensures the precise positioning and rapid transfer of the workpiece between each process, reduces manual intervention, and improves production stability. During the riveting process, the cooperation between the concave hole 11 limiting the pressing block base 31 and the upper and lower bidirectional pressure structures makes the riveted part 321 deform evenly, enhances the connection strength, and reduces the risk of loosening. The entire process forms a closed loop, and unqualified grinding discs are recycled through the reflux system, which improves the material utilization rate. At the same time, the parallel operation of multiple clamping units 8 realizes the simultaneous loading and unloading, significantly improves production efficiency, and effectively solves the problems of loose riveting and low production efficiency of the adjustment pressing blocks in the prior art.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A rack adjustment pressing block riveting forming device, used for riveting a pressing block grinding plate (32) onto a pressing block base (31), wherein the pressing block grinding plate (32) has a downwardly protruding rivet portion (321), and the pressing block base (31) is provided with a groove (312) for accommodating the pressing block grinding plate (32), and the bottom wall of the groove (312) has a rivet hole (311) that passes through from top to bottom to accommodate the rivet portion (321), characterized in that: The rack adjustment pressure block riveting forming device comprises a riveting platform (1), a lower pressure head (21) and an upper head (22), wherein the riveting platform (1) is provided with a concave hole (11) for placing the pressure block base (31), the lower pressure head (21) is arranged above the riveting platform (1) and is slidable up and down and corresponds to the concave hole (11); the upper head (22) slides up and down in the concave hole (11), and the lower pressure head (21) is configured In order to be able to move downward and press downward against the upper end surface of the riveted portion (321), the upper head (22) is configured to be able to move upward and press upward against the lower end surface of the riveted portion (321), the lower head (21) and the upper head (22) can cooperate with each other to deform the riveted portion (321) and embed it into the inner peripheral wall of the riveted hole (311) of the pressing block base (31), and the lower end of the lower head (21) matches the shape of the upper end of the pressing block grinding plate (32); A slide groove (211) is provided on the side wall of the lower pressure head (21) near the lower end, a detection slide (212) is provided in the slide groove (211) for sliding in the vertical direction, a detection wheel (213) is rotatably provided on the detection slide (212), and a spring (214) in a compressed state is provided between the detection slide (212) and the top side wall of the slide groove (211); the spring (214) is used to push the detection slide (212) close to the pressing block grinding plate (32); the detection wheel (213) is configured so that when the lower pressure head (21) moves downward, the detection wheel (213) can abut against the upper end of the pressing block grinding plate 32 to detect and correct the matching state between the pressing block grinding plate (32) and the pressing block base (31).

2. A rack adjustment block riveting and forming device according to claim 1, characterized in that: The lower end of the lower pressing head (21) has a lower boss (215), and the upper end of the upper pressing head (22) has an upper boss (221), and the peripheral wall of the upper boss (221) protrudes outward from the peripheral wall of the lower boss (215); the upper boss (221) and the lower boss (215) can approach each other and squeeze the riveted portion (321) so that the riveted portion (321) protrudes outward and deforms and is embedded in the inner peripheral wall of the riveted hole (311).

3. The rack adjustment block riveting and forming device according to claim 1, characterized in that: Also includes: The supporting sleeve (4) is slidably arranged in the concave hole (11) up and down. The supporting sleeve (4) is used to support the pressing block base (31) and to drive the pressing block base (31) to move upward and protrude from the concave hole (11). The upper head (22) is slidably arranged in the supporting sleeve (4).

4. A rack adjustment block riveting and forming device according to any one of claims 1 to 3, characterized in that: The invention also includes a loading unit (5) arranged on one side of the riveting platform (1) and a transfer unit (6) located between the loading unit (5) and the riveting platform (1), wherein the loading unit (5) is used to supply the pressed grinding discs (32) one by one, and the transfer unit (6) is used to support the pressed base (31) and receive the pressed grinding discs (32) supplied by the loading unit (5); a feeding arm (7) is provided on the riveting platform (1) so as to slide in the horizontal direction, and the feeding arm (7) has a clamping unit (8) capable of clamping the pressed base (31) supported by the transfer unit (6), and the clamping unit (8) can drive the pressed base (31) and the pressed grinding disc (32) to be transferred from the transfer unit (6) to the concave hole (11) under the translation action of the feeding arm (7), and the clamping unit (8) includes: A sliding seat (81) is slidably disposed on the feeding arm (7); Two clamping jaws (82) are swingably arranged on the sliding seat (81), and the two clamping jaws (82) can swing toward each other to clamp the outer peripheral wall of the pressure block base (31).

5. The rack adjustment block riveting and forming device according to claim 4, characterized in that: There are two clamping units (8), one of which is used to clamp the pressing block base (31) to be riveted on the transfer unit (6) to transfer the pressing block base (31) and the pressing block grinding sheet (32) to the concave hole (11), and the other clamping unit (8) is used to clamp the pressing block base (31) after being pressed at the concave hole (11) to remove the riveted pressing block base (31) and the pressing block grinding sheet (32).

6. The rack adjustment block riveting and forming device according to claim 4, characterized in that: The transfer unit (6) comprises: A transfer bracket (61) is rotatably arranged on one side of the riveting platform (1), and a plurality of support platforms (62) for supporting the pressing block base (31) are arranged on the transfer bracket (61); A transfer hanger (63) is slidably arranged on one side of the riveting platform (1) in a horizontal direction and is capable of horizontally moving between the loading unit (5) and the transfer unit (6); The transfer hanging head (64) is slidably mounted on the transfer hanging seat (63). The transfer hanging head (64) is configured to slide downward to remove the pressed grinding sheet (32) provided by the loading unit (5), and to be moved horizontally to the top of the transfer unit (6) driven by the transfer hanging seat (63) to unload the pressed grinding sheet (32) onto the pressed base (31) supported by the support platform (62).

7. The rack adjustment block riveting and forming device according to claim 6, characterized in that: The loading unit (5) comprises: A feeding cylinder (52) is provided on a side of the transfer bracket (61) away from the riveting platform (1), and a feeding slideway (53) extending spirally is provided on the inner wall of the feeding cylinder (52); A loading plate (51) is rotatably connected to the inner periphery of the feeding cylinder (52) and is located below the loading chute (53); a loading cavity (521) is formed above the loading plate (51) for carrying the pressed grinding disc (32) to feed the loading chute (53); The loading slide (53) can receive the pressed grinding disc (32) in the loading cavity (521) under the rotation of the loading disc (51), and make the pressed grinding disc (32) slide along the loading slide (53) to be delivered to the transfer hanging head (64).

8. The rack adjustment block riveting and forming device according to claim 7, characterized in that: The loading unit (5) further comprises: a screening track (54) provided on the feeding cylinder (52) and in communication with the discharge end of the feeding slideway (53); the screening track (54) is used to supply the pressed grinding sheet (32) to the transfer hanging head (64); A bottom support screen bar (55) is provided at the lower edge of the screening track (54) and is used to support the bottom of the pressed grinding plate (32); The upward-inclined screen bars (56) are arranged at the upper edge of the screening track (54) and above the bottom-supporting screen bars (55). The upward-inclined screen bars (56) gradually spiral downward and approach the bottom-supporting screen bars (55) to screen out unqualified pressed grinding discs (32).

9. The rack adjustment block riveting and forming device according to claim 8, characterized in that: A return port (522) is provided on the side wall of the feeding cylinder (52), and the feeding unit (5) further comprises: A material return cover (57) is arranged on the outer periphery of the material delivery cylinder (52); The return track (58) is spirally arranged between the return cover (57) and the feed cylinder (52). The feed cylinder (52), the return cover (57) and the return track (58) can enclose a return cavity (571) with an upward opening. The return cavity (571) is used to receive the pressed grinding discs (32) screened by the upward-inclined screen bars (56) and guide the pressed grinding discs (32) to flow back to the return port (522).

10. A rack adjustment pressing block riveting and forming process, using the rack adjustment pressing block riveting and forming device according to claim 9, characterized in that: The following steps are involved: Step S1: using the feeding unit (5) to feed the pressed grinding discs (32) one by one; Step S2: grabbing the pressed grinding disc (32) in the loading unit (5) and installing the pressed grinding disc (32) on the pressed base (31) of the transfer unit (6); Step S3: using the clamping unit (8) of the feeding arm (7) to synchronously transfer the assembled pressing block base (31) and pressing block grinding plate (32) on the transfer unit (6) to the concave hole (11) of the riveting platform (1); Step S4: the lower pressure head (21) moves downward until it contacts the upper end surface of the pressing block grinding disc (32), the lower pressure head (21) and the supporting sleeve (4) move downward synchronously to make the pressing block base (31) move downward into the concave hole (11), the upper head (22) moves upward and presses against the lower end surface of the riveted portion (321), the lower pressure head (21) and the upper head (22) cooperate and squeeze up and down to make the riveted portion (321) deform and embed into the inner peripheral wall of the riveted hole (311) of the pressing block base (31), the supporting sleeve (4) moves upward and lifts the riveted pressing block base (31) to protrude above the concave hole (11); Step S5: the clamping unit (8) clamps the pressing block base (31) and transfers the riveted pressing block base (31) and the pressing block grinding disc (32) under the translation drive of the feeding arm (7).

Images