Preparation tooling of lock ring for core-pulling rivet
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING HANGWEI JOINING TECHNOLOGY CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-16
Smart Images
Figure CN224359283U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blind rivet manufacturing technology, specifically a tooling for preparing a locking ring for blind rivets. Background Technology
[0002] Blind rivets offer advantages such as single-sided installation, bevel tolerance, and a smooth cross-section after installation. They are commonly used in high-shear load connections, areas with poor process access, and limited installation space, and their application in aerospace vehicles is becoming increasingly widespread. As the types and scenarios of blind rivet applications become more complex, the requirements for their production, rapid verification, and cost reduction and efficiency improvement are also gradually increasing. In the current blind rivet locking ring production process, the use of fitters for locking ring coiling and installation is inefficient, and the inconsistent accuracy of material cutting and coiling affects the riveting quality of the blind rivet installation. For specialized strip winding equipment, the large footprint, numerous molds, and complex structure (consisting of sensing devices, feeding devices, cutting devices, power devices, bases, and supports) reduce the equipment's operability. Modern blind rivets have high requirements for the timeliness of product quality and performance iteration, necessitating equipment with easy mold replacement, high operational flexibility, and low production response time. Utility Model Content
[0003] To address the issue of low efficiency in manually producing locking rings for existing blind rivets, this invention provides a tooling for preparing locking rings for blind rivets. This tooling is simple in structure and easy to use, enabling rapid mass production of locking rings. While providing flexible and stable production, it also reduces the number and cost of molds.
[0004] The technical solution adopted by this utility model embodiment to solve its technical problem is:
[0005] A tooling for preparing a locking ring for a blind rivet includes a base and a bending component. The base has a longitudinal groove and a transverse groove. The longitudinal groove extends in the front-to-back direction, and the transverse groove extends in the left-to-right direction. The longitudinal groove and the transverse groove intersect and communicate with each other. The locking ring blank can be placed in the longitudinal groove. The bending component has an inverted U-shaped structure and is inserted into the base vertically. The bending component includes a left column, an upper crossbeam, and a right column connected sequentially from left to right. A left limiting component is provided on the left column, and a right limiting component is provided on the right column. The left and right limiting components allow the core rod to extend in the left-to-right direction but cannot move left or right. During the process of the bending component driving the core rod downward, the left and right limiting components can press the locking ring blank in the longitudinal groove into a locking ring semi-finished product through the core rod. The locking ring semi-finished product has a U-shaped structure, and the core rod can enter the transverse groove.
[0006] The base contains a front upright plate, a middle block, and a rear upright plate connected sequentially from front to back. A receiving groove is formed between the front upright plate and the rear upright plate. The receiving groove has an inverted U-shaped structure. The longitudinal groove and the transverse groove are both located on the upper surface of the middle block. The receiving groove contains a left groove section, an upper groove section, and a right groove section connected sequentially from left to right. The left column is inserted into the left groove section, and the right column is inserted into the right groove section. The curved component is slidably connected to the base.
[0007] The rear side of the front upright plate and the front side of the rear upright plate are arranged parallel to each other. The rear side of the front upright plate is perpendicular to the front-back direction. The front end of the longitudinal groove is flush with the rear side of the front upright plate, and the rear end of the longitudinal groove is flush with the front side of the rear upright plate. The depth of the longitudinal groove is greater than or equal to the thickness of the lock ring blank, and the length of the longitudinal groove is equal to the length of the lock ring blank. A vertical guide assembly is provided between the bending component and the base. Along the left-right direction, the position of the longitudinal groove corresponds to the installation position of the finished lock ring on the core rod.
[0008] The left end of the horizontal groove is flush with the left side of the middle block, and the right end of the horizontal groove is flush with the right side of the middle block. The distance from the center line of the horizontal groove to the rear side of the front upright plate is the same as the distance from the center line of the horizontal groove to the front side of the rear upright plate.
[0009] The length of the transverse groove is less than the length of the core rod. The transverse groove contains an upper rectangular segment and a lower semicircular segment connected vertically. The width of the upper rectangular segment is the same as the diameter of the lower semicircular segment, and the diameter of the lower semicircular segment is the same as the outer diameter of the finished lock ring.
[0010] The bending component can detach from the base. The upper end face of the front upright plate is provided with a feeding groove. The upper end face of the front upright plate is flush with the upper end face of the rear upright plate. The upper end face of the front upright plate is parallel to the horizontal plane. The front end of the feeding groove is flush with the front side of the front upright plate. The rear end of the feeding groove is flush with the rear side of the front upright plate. The depth of the feeding groove is greater than or equal to the thickness of the locking ring blank. The upper crossbeam can be stacked and connected with the front and rear layers of the front upright plate. The lower end face of the upper crossbeam can be higher or lower than the upper end face of the front upright plate. Along the left and right direction, the feeding groove is located between the left and right uprights.
[0011] The tooling for preparing the locking ring for the pull rivet also includes a pressure plate, which is stacked and detachably connected to the front upright plate, and the pressure plate can cover the feeding groove.
[0012] The left limiting component fixes the right side of the left column. The left limiting component includes an upper left pressing rod and a lower left support rod arranged vertically. The upper left pressing rod can press down the core rod, and the lower left support rod can support the core rod. The upper left pressing rod and the lower left support rod are symmetrical and mirror images of each other. The upper left pressing rod has a right-angle structure and includes a left horizontal section and a left vertical section connected from left to right. The upper left pressing rod and the left column can accommodate the head of the core rod. The lower end of the left vertical section is provided with a left locking groove. When the head of the core rod is matched and locked in the left locking groove, the distance from the axis of the rod to the rear side of the front plate is the same as the distance from the axis of the rod to the front side of the rear plate.
[0013] The right limiting component fixes the left side of the left and right columns. The right limiting component includes an upper right pressing rod and a lower right support rod arranged vertically. The upper right pressing rod can press down the core rod, and the lower right support rod can support the core rod. The upper right pressing rod and the lower right support rod are symmetrical and mirror images of each other. The upper right pressing rod has a right-angle structure and includes a right horizontal section and a right vertical section that connect the right and left sides. The upper right pressing rod and the right column can accommodate the tail end of the core rod. The lower end of the right vertical section is provided with a right snap-fit groove. When the tail end of the core rod is matched and snapped into the right snap-fit groove, the distance from the axis of the rod to the rear side of the front plate is the same as the distance from the axis of the rod to the front side of the rear plate.
[0014] The tooling for preparing the locking ring for the pull rivet also includes a pressing ring assembly. The pressing ring assembly can press the semi-finished locking ring into a circular finished locking ring. The pressing ring assembly contains an operating head, a connecting rod, and a pressing head connected sequentially from top to bottom. The connecting rod is in an upright state and passes through the upper crossbeam. The operating head is located above the upper crossbeam, and the pressing head is located below the upper crossbeam. The operating head, connecting rod, and pressing head can move up and down synchronously. The operating head or connecting rod is connected to a reset component. The lower part of the pressing head has an arc-shaped surface with an opening facing downward. The arc-shaped surface is directly opposite the intersection of the longitudinal groove and the transverse groove. The arc-shaped surface extends in the left and right direction, and the opening width of the arc-shaped surface is greater than the width of the transverse groove.
[0015] The beneficial effects of this utility model embodiment are:
[0016] 1. The structure is simple, stable, and reliable, reducing the production and manufacturing costs of complex molds.
[0017] 2. Easy to use, which can greatly shorten the mass production cycle of blind rivets. Attached Figure Description
[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0019] Figure 1This is a front view schematic diagram of the tooling for preparing the locking ring for the core-pulling rivet described in this utility model in Embodiment 1.
[0020] Figure 2 This is a top view schematic diagram of the tooling for preparing the locking ring for the core-pulling rivet described in this utility model in Embodiment 1.
[0021] Figure 3 This is a right-side schematic diagram of the tooling for preparing the locking ring for the pull rivet described in Embodiment 1 of this utility model.
[0022] Figure 4 This is a three-dimensional schematic diagram of the tooling for preparing the locking ring for the pull rivet described in this utility model in Embodiment 1.
[0023] Figure 5 In Example 1 along Figure 1 Cross-sectional view along the AA direction.
[0024] Figure 6 In Example 1 along Figure 2 Cross-sectional view along the BB direction.
[0025] Figure 7 This is a top view of the base in Example 1.
[0026] Figure 8 This is a three-dimensional schematic diagram of the base in Embodiment 1.
[0027] Figure 9 This is a front view schematic diagram of the bent component in Embodiment 1.
[0028] Figure 10 In Example 1 along Figure 9 Cross-sectional view along the CC direction.
[0029] Figure 11 This is a cross-sectional schematic diagram of the pressure plate in Example 1.
[0030] Figure 12 This is a schematic diagram of the core rod being mounted on the bent component in Example 1.
[0031] Figure 13 This is a schematic diagram of the lower left support rod supporting the core rod in Example 1.
[0032] Figure 14 This is a schematic diagram of the upper left pressing rod pressing down the core rod in Example 1.
[0033] Figure 15 This is a schematic diagram of pressing the lock ring blank into a semi-finished lock ring using the upper left pressing rod in Example 1.
[0034] Figure 16 In Example 2, along Figure 2Cross-sectional view along the BB direction.
[0035] Figure 17 In Example 2, along Figure 1 Cross-sectional view along the AA direction.
[0036] Figure 18 This is a schematic diagram of the pressure ring assembly without pressing down the locking ring semi-finished product in Example 2.
[0037] Figure 19 This is a schematic diagram of the pressure ring assembly pressing the semi-finished locking ring into the finished locking ring in Example 2.
[0038] Figure 20 This is a schematic diagram of the core rod.
[0039] Figure 21 This is a schematic diagram of the locking ring after it has been installed onto the core rod in Example 2.
[0040] The annotations in the attached figures are explained as follows:
[0041] 1. Base; 2. Bending component; 3. Pressure plate; 4. Pressure ring assembly; 5. Finished locking ring; 6. Core rod;
[0042] 11. Front upright plate; 12. Middle block; 13. Rear upright plate; 14. Receiving groove; 15. Longitudinal groove; 16. Transverse groove;
[0043] 21. Left column; 22. Top beam; 23. Right column;
[0044] 41. Operating head; 42. Connecting rod; 43. Pressure head; 44. Reset component; 45. Arc-shaped surface;
[0045] 51. Locking ring blank; 52. Locking ring semi-finished product;
[0046] 61. Head; 62. Rod;
[0047] 111. Feeding trough;
[0048] 141. Left groove section; 142. Upper groove section; 143. Right groove section;
[0049] 161. Upper rectangular segment; 162. Lower semicircular segment;
[0050] 211. Left limiting component; 212. Upper left pressing rod; 213. Lower left support rod; 214. Left horizontal section; 215. Left vertical section; 216. Left locking groove;
[0051] 231. Right limiting component; 232. Upper right pressing rod; 233. Lower right support rod; 234. Right horizontal section; 235. Right vertical section; 236. Right locking groove;
[0052] 621. Head end; 622. Tail end. Detailed Implementation
[0053] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0054] For ease of understanding and description, the following description of this utility model uses absolute positional relationships. Unless otherwise specified, the directional word "above" indicates... Figure 1 The direction above, the directional word "down" indicates Figure 1 The lower side of the middle, the directional word "left" indicates Figure 1 The left side of the direction, the directional word "right" indicates Figure 1 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 1 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 1 The direction of the orientation is towards the outside of the paper. This invention is described from the perspective of a reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them based on actual needs or a limited number of experiments.
[0055] Example 1
[0056] like Figures 1 to 6 As shown in the embodiment of this utility model, a tooling for preparing a locking ring for a blind rivet includes a base 1 and a bending component 2. The base 1 is provided with a longitudinal groove 15 and a transverse groove 16. The longitudinal groove 15 extends in the front-to-back direction, and the transverse groove 16 extends in the left-to-right direction. The longitudinal groove 15 and the transverse groove 16 intersect and communicate with each other. The locking ring blank 51 can be matched and placed in the longitudinal groove 15. The bending component 2 has an inverted U-shaped structure. The bending component 2 is inserted vertically into the base 1. The bending component 2 includes a left column 21 connected sequentially from left to right. The upper crossbeam 22 and the right column 23 are provided. The left column 21 is provided with a left limiting component 211, and the right column 23 is provided with a right limiting component 231. The left limiting component 211 and the right limiting component 231 can extend the core rod 6 in the left and right directions but cannot move left and right. During the process of the bending component 2 driving the core rod 6 to move downward, the left limiting component 211 and the right limiting component 231 can press the locking ring blank 51 in the longitudinal groove 15 into a locking ring semi-finished product 52 through the core rod 6. The locking ring semi-finished product 52 has a U-shaped structure, and the core rod 6 can enter the transverse groove 16.
[0057] As one possible implementation method, such as Figures 7 to 8As shown, the base 1 is roughly in the shape of a horizontally lying I-beam. The base 1 contains a front upright plate 11, a middle block 12 and a rear upright plate 13 connected from front to back. The middle block 12 is a cuboid or cubic structure. A receiving groove 14 is formed between the front upright plate 11 and the rear upright plate 13. The receiving groove 14 is an inverted U-shaped structure. The longitudinal groove 15 and the transverse groove 16 are both located on the upper surface of the middle block 12. The receiving groove 14 contains a left groove segment 141, an upper groove segment 142 and a right groove segment 143 connected from left to right. The left column 21 and the right column 23 both extend in the vertical direction. The upper crossbeam 22 extends in the horizontal direction. The left column 21 is inserted into the left groove segment 141 and the right column 23 is inserted into the right groove segment 143.
[0058] like Figures 5 to 8 As shown, the bending component 2 can move up and down relative to the base 1. The bending component 2 can move downward to engage with the base 1, and it can also move upward to separate from the base 1. The bending component 2 is slidably connected to the base 1. The front sides of the left column 21 and the right column 23 are slidably connected to the rear side of the front plate 11, and the rear sides of the left column 21 and the right column 23 are slidably connected to the front side of the rear plate 13. The front plate 11 and the rear plate 13 are basically the same in size and shape.
[0059] As an alternative implementation, the rear side of the front upright plate 11 and the front side of the rear upright plate 13 are arranged parallel to each other. The rear side of the front upright plate 11 is perpendicular to the front-back direction. The front end of the longitudinal groove 15 is flush with the rear side of the front upright plate 11, and the rear end of the longitudinal groove 15 is flush with the front side of the rear upright plate 13. That is, the length of the longitudinal groove 15 is equal to the distance between the rear side of the front upright plate 11 and the front side of the rear upright plate 13.
[0060] like Figures 5 to 8 As shown, the longitudinal groove 15 serves to place the lock ring blank 51. The lock ring blank 51 has a long strip-shaped plate structure. The depth of the longitudinal groove 15 is greater than or equal to the thickness of the lock ring blank 51. The length of the longitudinal groove 15 is equal to the length of the lock ring blank 51 (which is also equal to the circumference of the outer perimeter of the finished lock ring 5). Along the left and right direction, the position of the longitudinal groove 15 corresponds to the installation position of the finished lock ring 5 on the core rod 6 after the core rod 6 is installed on the left limiting component 211 and the right limiting component 231 of the bending component 2.
[0061] As one possible implementation, a vertical guide assembly is provided between the bending component 2 and the base 1. The vertical guide assembly can be a guide rail and a guide groove, both extending vertically. For example, a guide rail is provided on the front side of the left column 21 and / or the right column 23, and a guide groove is provided on the rear side of the front plate 11, with the guide rail and guide groove interlocking. Alternatively, a guide rail is provided on the rear side of the left column 21 and / or the right column 23, and a guide groove is provided on the front side of the rear plate 13, with the guide rail and guide groove interlocking.
[0062] The left end of the transverse groove 16 is flush with the left side of the middle block 12, and the right end of the transverse groove 16 is flush with the right side of the middle block 12. The distance from the center line L of the transverse groove 16 to the rear side of the front plate 11 is the same as the distance from the center line of the transverse groove 16 to the front side of the rear plate 13.
[0063] like Figure 20 As shown, the core rod 6 includes a head 61 and a rod portion 62 connected in sequence. The rod portion 62 includes a head end 621 and a tail end 622, with the head end 621 connected to the head 61. The length of the transverse groove 16 is less than the length of the rod portion 62 of the core rod 6. The transverse groove 16 includes an upper rectangular segment 161 and a lower semicircular segment 162 connected vertically. The opening of the lower semicircular segment 162 faces upward, and the lower semicircular segment 162 protrudes downward. The width of the upper rectangular segment 161 is the same as the diameter of the lower semicircular segment 162. The diameter of the lower semicircular segment 162 is the same as the outer diameter of the finished lock ring 5. The centerline L of the transverse groove 16 coincides with the axis of the lower semicircular segment 162.
[0064] As one possible implementation method, such as Figures 7 to 8 As shown, a feeding trough 111 is provided on the upper end face of the front upright plate 11. The upper end face of the front upright plate 11 is flush with the upper end face of the rear upright plate 13. The upper end face of the front upright plate 11 is parallel to the horizontal plane. The front end of the feeding trough 111 is flush with the front side of the front upright plate 11, and the rear end of the feeding trough 111 is flush with the rear side of the front upright plate 11. The depth of the feeding trough 111 is greater than or equal to the thickness of the locking ring blank 51. The upper crossbeam 22 can be stacked and connected to the front and rear of the front upright plate 11. The lower end face of the upper crossbeam 22 can be higher or lower than the upper end face of the front upright plate 11. The upper crossbeam 22 can shear the locking ring raw material. Along the left and right direction, the feeding trough 111 is located between the left column 21 and the right column 23.
[0065] As one possible implementation method, such as Figures 1 to 6 , Figure 11 As shown, the tooling for preparing the locking ring for the core-pulling rivet also includes a pressure plate 3. The pressure plate 3 and the front upright plate 11 are stacked and detachably connected. The pressure plate 3 has a cuboid structure and extends in the left and right direction. The pressure plate 3 can cover the feeding groove 111.
[0066] As one possible implementation method, such as Figures 9 to 10 As shown, the left limiting component 211 fixes the right side of the left column 21. The left limiting component 211 includes an upper left pressing rod 212 and a lower left support rod 213 arranged at intervals. The upper left pressing rod 212 can press down the core rod 6, and the lower left support rod 213 can support the core rod 6. The upper left pressing rod 212 and the lower left support rod 213 are symmetrical and mirror images of each other. The upper left pressing rod 212 has a right-angle structure and includes a left horizontal section 214 and a left vertical section 215 connected from left to right. The upper left pressing rod 212 and the left column 21 can accommodate the head 61 of the core rod 6. The lower end of the left vertical section 215 is provided with a left locking groove 216.
[0067] As one possible implementation method, such as Figures 9 to 10 As shown, the right limiting component 231 fixes the left side of the left and right columns 23. The right limiting component 231 includes a right upper pressing rod 232 and a right lower support rod 233 arranged vertically. The right upper pressing rod 232 can press down the core rod 6, and the right lower support rod 233 can support the core rod 6. The right upper pressing rod 232 and the right lower support rod 233 are symmetrical and mirror images of each other. The right upper pressing rod 232 has a right-angle structure and includes a right horizontal section 234 and a right vertical section 235 connected to the left and right. The tail end 622 of the rod part 62 of the core rod 6 can be accommodated between the right upper pressing rod 232 and the right column 23. The lower end of the right vertical section 235 is provided with a right locking groove 236.
[0068] like Figure 12 As shown, when the head end 621 of the rod portion 62 of the core rod 6 is matched and engaged in the left engagement groove 216 of the upper left pressing rod 212, and the tail end 622 of the rod portion 62 of the core rod 6 is matched and engaged in the right engagement groove 236 of the upper right pressing rod 232, the distance from the axis of the rod portion 62 to the rear side of the front upright plate 11 is the same as the distance from the axis of the rod portion 62 to the front side of the rear upright plate 13.
[0069] When the head end 621 of the rod portion 62 of the core rod 6 is matched and engaged in the left engagement groove 216 of the lower left support rod 213, and the tail end 622 of the rod portion 62 of the core rod 6 is matched and engaged in the right engagement groove 236 of the lower right support rod 233, the distance from the axis of the rod portion 62 to the rear side of the front upright plate 11 is the same as the distance from the axis of the rod portion 62 to the front side of the rear upright plate 13.
[0070] The left limiting component 211 is used to install the head 61 of the core rod 6, and the right limiting component 231 is used to install the tail end 622 of the core rod 6. The core rod 6 can be installed between the left limiting component 211 and the right limiting component 231. The upper left pressing rod 212 and the upper right pressing rod 232 can press down on the core rod 6, and the lower left support rod 213 and the lower right support rod 233 can support the core rod 6. The position and shape of the middle block 12 should not prevent the lower left support rod 213 and the lower right support rod 233 from moving downward.
[0071] The distance between the left vertical segment 215 of the upper left pressing rod 212 and the left vertical segment 215 of the lower left support rod 213 is greater than the outer diameter of the head end 621 of the rod 62. The distance between the right vertical segment 235 of the upper right pressing rod 232 and the right vertical segment 235 of the lower right support rod 233 is greater than the outer diameter of the tail end 622 of the rod 62. After the core rod 6 is installed on the left limiting member 211 and the right limiting member 231 of the bending member 2, the core rod 6 can move up and down relative to the bending member 2 within a limited range. The upper left pressing rod 212 and the upper right pressing rod 232 can prevent the core rod 6 from moving upward, and the lower left support rod 213 and the lower right support rod 233 can prevent the core rod 6 from moving downward.
[0072] The following describes the working process of the tooling for preparing the locking ring for the pull rivet.
[0073] Step 1, Material preparation:
[0074] Stainless steel or high-temperature alloy strip (locking ring material) is inserted into the feeding groove 111 of the base 1. The end of the locking ring material moves from front to back, and the locking ring material entering the feeding groove 111 is in a horizontal state until the end of the locking ring material abuts against the front side of the rear upright plate 13. The upper crossbeam 22 of the bending component 2 is located above the feeding groove 111 (and the locking ring material). The bending component 2 moves downward, and the bending component 2 performs one downward press to complete the shearing and blanking, thus obtaining a locking ring blank 51 of a set length. The power source for the up-and-down movement of the bending component 2 can be achieved by manual, electric, or hydraulic means.
[0075] Step 2, blank alignment and mandrel insertion:
[0076] The bending component 2 moves upward and detaches from the base 1, i.e., the bending component 2 is removed. The head 61 of the core rod 6 is then placed on the lower left support rod 213. Figure 13 As shown, the tail end 622 of the core rod 6 is placed on the lower right support rod 233, and the locking ring blank 51 is placed in the longitudinal groove 15 of the base 1 for fixing.
[0077] Step 3, bending the lock ring blank:
[0078] The bending component 2 is installed on the base 1. The bending component 2 is ready to be pressed down again. During the downward movement of the bending component 2, the core rod 6 on the lower left support rod 213 and the lower right support rod 233 first contacts the locking ring blank 51 in the longitudinal groove 15, such as... Figure 14 As shown, the core rod 6 and the locking ring blank 51 remain in contact, with the locking ring blank 51 providing support for the core rod 6, until the core rod 6 contacts the upper left pressing rod 212 and the upper right pressing rod 232. Finally, as the bending component 2 continues to press down, the core rod 6, under the pressure of the upper left pressing rod 212 and the upper right pressing rod 232, causes the middle part of the locking ring blank 51 to bend downwards and the front and rear ends to bend upwards, thus forming a locking ring semi-finished product 52 from the locking ring blank 51. Figure 15 As shown.
[0079] Step 4: Bend the semi-finished lock ring into the finished lock ring:
[0080] The bending component 2 moves upward and detaches from the base 1, i.e., the bending component 2 is removed. Then, using other existing pressing tools, the U-shaped locking ring semi-finished product 52 is pressed into a circular locking ring finished product 5. The pressing tool includes a pressing head 43 as described in the following embodiment. The lower part of the pressing head 43 has a downward-facing arc-shaped surface 45. The opening width of the arc-shaped surface 45 is greater than the upper width of the U-shaped locking ring semi-finished product 52. During the process of the arc-shaped surface 45 contacting the upper end of the locking ring semi-finished product 52 and moving downward, the U-shaped locking ring semi-finished product 52 can be pressed into a circular locking ring finished product 5. This yields a core rod 6 with the locking ring finished product 5.
[0081] Example 2
[0082] This embodiment is an improvement on Embodiment 1. The difference between this embodiment and Embodiment 1 is as follows:
[0083] like Figure 16 and Figure 17 As shown, the tooling for preparing the locking ring for the core-pulling rivet also includes a pressing ring assembly 4. The pressing ring assembly 4 can press the locking ring semi-finished product 52 into a circular locking ring finished product 5. The pressing ring assembly 4 contains an operating head 41, a connecting rod 42, and a pressing head 43 connected sequentially from top to bottom. The connecting rod 42 is in an upright state and passes through the upper crossbeam 22. The operating head 41 is located above the upper crossbeam 22, and the pressing head 43 is located below the upper crossbeam 22. The operating head 41, the connecting rod 42, and the pressing head 43 can move up and down synchronously. The operating head 41 or the connecting rod 42 is connected to a reset component 44. The lower part of the pressing head 43 contains an arc-shaped surface 45 with its opening facing downward. The arc-shaped surface 45 is directly opposite the intersection of the longitudinal groove 15 and the transverse groove 16. The arc-shaped surface 45 extends in the left and right direction, and the opening width of the arc-shaped surface 45 is greater than the width of the transverse groove 16.
[0084] As one possible implementation, the connecting rod 42 and the upper crossbeam 22 can be transition-fitted or clearance-fitted; the operating head 41 and the connecting rod 42 can be threaded together; the connecting rod 42 and the pressure head 43 can be welded or threaded together; one end of the reset component 44 is connected to the operating head 41, and the other end of the reset component 44 is connected to the upper crossbeam 22. The power source for the downward movement of the operating head 41, connecting rod 42, and pressure head 43 can be manual, electric, or hydraulic.
[0085] The working process of the tooling for preparing the locking ring of the blind rivet described in this embodiment is basically the same as that in Embodiment 1, except for step 4. That is, steps 1 to 3 of the working process of the tooling for preparing the locking ring of the blind rivet described in this embodiment are the same as steps 1 to 3 in Embodiment 1, but step 4 of the working process of the tooling for preparing the locking ring of the blind rivet described in this embodiment is different from step 4 in Embodiment 1. Step 4 of the working process of the tooling for preparing the locking ring of the blind rivet is described below.
[0086] Step 4: Bend the semi-finished lock ring into the finished lock ring:
[0087] like Figure 18 As shown, initially, the operating head 41, connecting rod 42, and pressure head 43 are all at their upper limit positions. The operating head 41, connecting rod 42, and pressure head 43 move up and down synchronously. During the process of the pressure head 43's arc-shaped surface 45 contacting the upper end of the semi-finished lock ring 52 and moving downwards, the U-shaped semi-finished lock ring 52 can be pressed into a circular finished lock ring 5, as shown. Figure 19 As shown, the reset component 44 then returns the operating head 41, connecting rod 42, and pressure head 43 to their upper limit positions. This yields the core rod 6 with the locking ring finished product 5, as shown. Figure 20 and Figure 21 As shown.
[0088] This embodiment allows obtaining the core rod 6 with the locking ring 5 without removing the bending component 2. All other technical features of this embodiment are the same as those in Embodiment 1; therefore, for brevity, they will not be described in detail here.
[0089] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within its coverage. Furthermore, the technical features, technical solutions, and embodiments of this utility model can be freely combined and used.
Claims
1. A tooling for preparing a locking ring for a blind rivet, characterized in that, The tooling for preparing the locking ring for the pull rivet includes a base (1) and a bending component (2). The base (1) is provided with a longitudinal groove (15) and a transverse groove (16). The longitudinal groove (15) extends in the front-to-back direction, and the transverse groove (16) extends in the left-to-right direction. The longitudinal groove (15) and the transverse groove (16) intersect and communicate with each other. The locking ring blank (51) can be placed in the longitudinal groove (15) in a matching manner. The bending component (2) has an inverted U-shaped structure. The bending component (2) is inserted into the base (1) vertically. The bending component (2) contains a left column (21), an upper crossbeam (22) and a right column connected sequentially from left to right. (23) A left limiting component (211) is provided on the left column (21), and a right limiting component (231) is provided on the right column (23). The left limiting component (211) and the right limiting component (231) can extend the core rod (6) in the left and right directions but cannot move left and right. During the process of the bending component (2) driving the core rod (6) to move downward, the left limiting component (211) and the right limiting component (231) can press the lock ring blank (51) in the longitudinal groove (15) into a lock ring semi-finished product (52) through the core rod (6). The lock ring semi-finished product (52) has a U-shaped structure, and the core rod (6) can enter the transverse groove (16).
2. The tooling for preparing the locking ring for the blind rivet according to claim 1, characterized in that, The base (1) includes a front upright plate (11), a middle block (12) and a rear upright plate (13) connected from front to back. A receiving groove (14) is formed between the front upright plate (11) and the rear upright plate (13). The receiving groove (14) has an inverted U-shaped structure. The longitudinal groove (15) and the transverse groove (16) are both located on the upper surface of the middle block (12). The receiving groove (14) includes a left groove section (141), an upper groove section (142) and a right groove section (143) connected from left to right. The left column (21) is inserted into the left groove section (141), and the right column (23) is inserted into the right groove section (143). The bending component (2) is slidably connected to the base (1).
3. The tooling for preparing the locking ring for the blind rivet according to claim 2, characterized in that, The rear side of the front plate (11) and the front side of the rear plate (13) are arranged parallel to each other. The rear side of the front plate (11) is perpendicular to the front-back direction. The front end of the longitudinal groove (15) is flush with the rear side of the front plate (11), and the rear end of the longitudinal groove (15) is flush with the front side of the rear plate (13). The depth of the longitudinal groove (15) is greater than or equal to the thickness of the lock ring blank (51). The length of the longitudinal groove (15) is equal to the length of the lock ring blank (51). A vertical guide assembly is provided between the bending component (2) and the base (1). Along the left-right direction, the position of the longitudinal groove (15) corresponds to the installation position of the finished lock ring (5) on the core rod (6).
4. The tooling for preparing the locking ring for the blind rivet according to claim 2, characterized in that, The left end of the transverse groove (16) is flush with the left side of the middle block (12), the right end of the transverse groove (16) is flush with the right side of the middle block (12), and the distance from the center line of the transverse groove (16) to the rear side of the front plate (11) is the same as the distance from the center line of the transverse groove (16) to the front side of the rear plate (13).
5. The tooling for preparing the locking ring for the blind rivet according to claim 2, characterized in that, The length of the transverse groove (16) is less than the length of the rod part (62) of the core rod (6). The transverse groove (16) contains an upper rectangular section (161) and a lower semicircular section (162) connected vertically. The width of the upper rectangular section (161) is the same as the diameter of the lower semicircular section (162), and the diameter of the lower semicircular section (162) is the same as the outer diameter of the finished lock ring (5).
6. The tooling for preparing the locking ring for the blind rivet according to claim 2, characterized in that, The bending component (2) can detach from the base (1). The upper end face of the front plate (11) is provided with a feeding groove (111). The upper end face of the front plate (11) is flush with the upper end face of the rear plate (13). The upper end face of the front plate (11) is parallel to the horizontal plane. The front end of the feeding groove (111) is flush with the front side of the front plate (11). The rear end of the feeding groove (111) is flush with the rear side of the front plate (11). The depth of the feeding groove (111) is greater than or equal to the thickness of the locking ring blank (51). The upper crossbeam (22) can be stacked and connected with the front and rear of the front plate (11). The lower end face of the upper crossbeam (22) can be higher or lower than the upper end face of the front plate (11). Along the left and right direction, the feeding groove (111) is located between the left column (21) and the right column (23).
7. The tooling for preparing the locking ring for the blind rivet according to claim 6, characterized in that, The tooling for preparing the locking ring for the core-pulling rivet also includes a pressure plate (3), which is stacked and detachably connected to the front upright plate (11). The pressure plate (3) can cover the feeding groove (111).
8. The tooling for preparing the locking ring for the blind rivet according to claim 1, characterized in that, The left limiting component (211) fixes the right side of the left column (21). The left limiting component (211) includes an upper left pressing rod (212) and a lower left support rod (213) arranged vertically. The upper left pressing rod (212) can press down the core rod (6), and the lower left support rod (213) can support the core rod (6). The upper left pressing rod (212) and the lower left support rod (213) are symmetrical and mirror images of each other. The upper left pressing rod (212) has a right-angle structure and contains a left water supply connected to the left and right sides. The horizontal section (214) and the left vertical section (215), the upper left pressing rod (212) and the left column (21) can accommodate the head (61) of the core rod (6), and the lower end of the left vertical section (215) is provided with a left snap-fit groove (216). When the head end (621) of the rod part (62) of the core rod (6) is matched and snapped into the left snap-fit groove (216), the distance from the axis of the rod part (62) to the rear side of the front plate (11) is the same as the distance from the axis of the rod part (62) to the front side of the rear plate (13).
9. The tooling for preparing the locking ring for the blind rivet according to claim 1, characterized in that, The right limiting component (231) fixes the left side of the left and right columns (23). The right limiting component (231) includes an upper right pressing rod (232) and a lower right support rod (233) arranged vertically. The upper right pressing rod (232) can press down the core rod (6), and the lower right support rod (233) can support the core rod (6). The upper right pressing rod (232) and the lower right support rod (233) are symmetrical and mirror images of each other. The upper right pressing rod (232) has a right-angle structure and includes a right horizontal section (2) connecting the right and left sides. 34) and the right vertical section (235), the right upper pressing rod (232) and the right column (23) can accommodate the tail end (622) of the rod part (62) of the core rod (6), and the lower end of the right vertical section (235) is provided with a right snap-fit groove (236). When the tail end (622) of the rod part (62) of the core rod (6) is matched and snapped into the right snap-fit groove (236), the distance from the axis of the rod part (62) to the rear side of the front plate (11) is the same as the distance from the axis of the rod part (62) to the front side of the rear plate (13).
10. The tooling for preparing the locking ring for the blind rivet according to claim 1, characterized in that, The tooling for preparing the locking ring for the blind rivet also includes a pressing ring assembly (4). The pressing ring assembly (4) can press the locking ring semi-finished product (52) into a circular locking ring finished product (5). The pressing ring assembly (4) contains an operating head (41), a connecting rod (42), and a pressing head (43) connected sequentially from top to bottom. The connecting rod (42) is in an upright state and passes through the upper crossbeam (22). The operating head (41) is located above the upper crossbeam (22), and the pressing head (43) is located on the upper crossbeam (22). Below, the operating head (41), connecting rod (42) and pressure head (43) can move up and down synchronously. The operating head (41) or connecting rod (42) is connected to a reset component (44). The lower part of the pressure head (43) has an arc-shaped surface (45) with the opening facing downward. The arc-shaped surface (45) is directly opposite the intersection of the longitudinal groove (15) and the transverse groove (16). The arc-shaped surface (45) extends in the left and right direction. The opening width of the arc-shaped surface (45) is greater than the width of the transverse groove (16).