Lock cup stamping forming device and method

Abstract

The present application is applicable to the field of mechanical forming technology, and provides a lock cup stamping forming device and method, the device including a positioning platform, a guide rod and an impact head, the positioning platform is arranged in the lock cup, the guide rod passes through the positioning platform and is coaxial with the lock cup, the impact head has a forming slope that tapers in the direction toward the guide rod, the impact head can slide along the axial direction of the lock cup, the maximum outer diameter of the forming slope is greater than the inner diameter of the first sleeve, and the minimum outer diameter is less than the inner diameter of the first sleeve. The present application positions the guide rod coaxially with the lock cup through the positioning platform, and the impact head can slide along the axial direction with the guidance of the guide rod. During the sliding process of the impact head, its forming slope enters the first sleeve of the lock cup and pushes the first sleeve to expand outward, which can make the tail of the lock cup accurately deformed and accurately fit with the flange, improve the assembly balance and stability of the lock cup and the flange, reduce damage to the lock cup and the flange, and also reduce batch rework of the lock cup, thereby improving assembly efficiency.

Description

Technical Field

[0001] The present application relates to the field of mechanical forming technology, and in particular to a lock cup stamping forming device and method. Background Art

[0002] Figure 1 In the embodiment, the locking cup 11 is a precision-made anti-loosening component, which is mostly used to lock the bolt 13. For example, the flange 12 is fixed to the base 14 through the head 132 and the stem 131 of the bolt 13. Figure 2 、 Figure 3 and Figure 6 shown.

[0003] The locking process of the lock cup 11 is actually that the tail portion of the lock cup 11 (the first sleeve 111) is deformed and adapted to the first inner step surface in the flange 12. Figure 1 、 Figure 3 As shown; the head 132 of the lock cup 11 is deformed to fit into the first conical notch 121 of the flange hole 120, and the head 132 of the lock cup 11 (the second sleeve 112) is deformed to fit into the second conical notch 133 of the head 132 of the bolt 13, please refer to Figures 4 to 6 shown.

[0004] The deformation of the first and second sleeves 111, 112 usually requires manual use of tools such as flat shovels and screwdrivers in conjunction with a hammer to vigorously strike at different locations on the first sleeve 111. The effectiveness of manual expansion and hammering depends largely on the operator's proficiency and operating habits, and is prone to uneven force application around the circumference, resulting in excessive local force on the lock cup 11 and bolt 13, which in turn makes it easy to pry and damage the lock cup 11 and flange 12. In particular, the tail of the lock cup 11 (after the lock cup 11 is assembled, the tail is located between the base 14 and the flange 12 and is not visible from the outside) requires 360° deformation, and the deformation area is larger. Therefore, its deformation effect is more important to the assembly effect of the entire lock cup 11 and flange 12.

[0005] In key components such as bearings, hydraulic components, and mechanical seals of RCV pumps in nuclear power plants, a flange 12 is usually installed on a base 14 by setting multiple flange holes 120 and lock cups 11. Damage to any lock cup 11 will cause other assembled lock cups 11 to be disassembled from the flange 12 and reinstalled. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a lock cup stamping and forming device, which aims to solve the technical problems of the existing lock cups in that manual knocking during installation causes uneven deformation of the lock cups, easily damages the lock cups and leads to batch rework.

[0007] The embodiment of the present application is implemented as follows: a lock cup stamping and forming device is used to fix a lock cup in a flange hole of a flange, the lock cup includes a first sleeve and a second sleeve coaxially connected, the inner diameter of the first sleeve is smaller than the inner diameter of the second sleeve, the outer diameter of the first sleeve is smaller than the outer diameter of the second sleeve, the inner wall of the flange hole forms a first limiting wall for resisting the second sleeve, and a second limiting wall for cooperating with the first sleeve; the lock cup stamping and forming device includes:

[0008] a positioning assembly comprising a positioning platform having a positioning hole, the positioning platform being configured to be disposed within the second sleeve and axially abutting against an inner bottom wall of the second sleeve to press the locking cup against the first limiting wall of the flange hole;

[0009] a guide assembly comprising a guide rod coaxially disposed in the positioning hole, a distal end of the guide rod protruding from the first sleeve, and a gap formed between an outer circumferential surface of the guide rod and an inner circumferential surface of the first sleeve;

[0010] An impact head has a formed inclined surface that tapers in the direction toward the guide rod, the impact head is used to connect to the guide rod, and the impact head can slide along the axial direction of the lock cup; the maximum outer diameter of the formed inclined surface is greater than the inner diameter of the first sleeve, and the minimum outer diameter of the formed inclined surface is smaller than the inner diameter of the first sleeve.

[0011] In one embodiment, the formed bevel includes a first bevel and a second bevel connected in sequence in a direction away from the guide rod, the inclination of the second bevel is greater than the inclination of the first bevel, the maximum outer diameter of the first bevel is greater than the inner diameter of the first sleeve, and the minimum outer diameter of the first bevel is smaller than the inner diameter of the first sleeve.

[0012] In one embodiment, the first inclined surface includes a third inclined surface and a fourth inclined surface connected in sequence in a direction away from the positioning platform, the slope of the third inclined surface is greater than the slope of the fourth inclined surface, the minimum outer diameter of the third inclined surface is smaller than the inner diameter of the first sleeve, and the maximum outer diameter of the fourth inclined surface is greater than the inner diameter of the first sleeve.

[0013] In one embodiment, one or more buffer grooves spaced apart in the axial direction are provided on the outer peripheral surface of the impact head.

[0014] In one embodiment, a second accommodating hole is formed on an end surface of the impact head facing the positioning platform, and a distal end of the guide rod abuts against a bottom wall of the second accommodating hole.

[0015] In one embodiment, the lock cup stamping forming device also includes a support platform, which is provided with a support hole coaxially connected to the positioning hole, and the inner diameter of the support hole is greater than or equal to the inner diameter of the positioning hole; one end of the positioning platform facing the support platform protrudes from the end faces of the lock cup and the flange.

[0016] In one embodiment, the inner diameter of the support hole is larger than the inner diameter of the positioning hole, and the guide assembly further includes a limit head, which is connected to the end of the guide rod facing away from the impact head, and the outer diameter of the limit head is larger than the outer diameter of the guide rod, and the limit head is used to abut against the bottom wall of the support hole.

[0017] In one embodiment, the axial depth of the support hole is greater than the axial height of the limiting head.

[0018] In one embodiment, the lock cup stamping and forming device further comprises a hollow bracket for abutting against the end surface of the support platform facing away from the positioning platform, and the hollow bracket has an avoidance hole for avoiding the limiting head.

[0019] In one embodiment, the lock cup stamping and forming device further includes a handle, the handle including a gripping portion and a connecting portion connected along the axial direction, and a connecting hole cooperating with the connecting portion is formed on the impact head.

[0020] In one embodiment, the connecting hole is a threaded hole, and an external thread section adapted to the threaded hole is formed on the connecting portion; a first accommodating hole is also formed on the impact head at the end of the connecting hole facing away from the guide rod, and the inner diameter of the first accommodating hole is larger than the inner diameter of the connecting hole; the handle also includes a loading portion provided between the connecting portion and the gripping portion, and a first loading surface is formed on the loading portion for abutting against the bottom wall of the first accommodating hole.

[0021] Another object of the present application is to provide a lock cup stamping method, which uses the lock cup stamping device described in the above embodiments, including:

[0022] placing the positioning platform in the second sleeve;

[0023] Pass the guide rod through the positioning platform so that the guide rod and the locking cup remain coaxial;

[0024] Connecting the impact head to the end of the guide rod;

[0025] Arrange the cup stamping device, the flange and the lock cup in a vertical position so that the impact head is located above the guide rod, and provide position limiting support for the end face of the positioning platform facing away from the impact head;

[0026] A force is applied to the impact head to push the impact head to move axially until the forming inclined surface enters the first sleeve and pushes the first sleeve to expand outward.

[0027] The lock cup stamping and forming device and lock cup stamping and forming method provided in the embodiments of the present application have the following beneficial effects:

[0028] The locking cup stamping and forming device provided in the embodiments of the present application uses a positioning platform to position a guide rod coaxially with the locking cup. The impact head, guided by the guide rod, can slide axially. During the sliding process of the impact head, its formed bevel enters the first sleeve of the locking cup and pushes the first sleeve outward to expand. During this process, the axial movement of the impact head is precisely limited. Therefore, the formed bevel allows the tail of the locking cup to be precisely deformed and precisely matched with the flange, improving the balance and stability of the assembly of the locking cup and flange, reducing damage to the locking cup and flange, and reducing the need for batch rework of the locking cup, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the lock cup;

[0031] Figure 2 It is a schematic diagram of flange matching;

[0032] Figure 3 It is a schematic diagram of the deformation of the tail of the lock cup;

[0033] Figure 4 It is a side structural diagram of the lock cup, flange, base and bolts;

[0034] Figure 5 This is a front structural diagram of the lock cup, flange, base, and bolts.

[0035] Figure 6 This is a schematic diagram of the structure in which the lock cup is matched with the flange, base, and bolts;

[0036] Figure 7 Schematic diagram of the structure of the lock cup stamping and forming device provided in an embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the lock cup stamping and forming device provided in an embodiment of the present application in use;

[0038] Figure 9Schematic diagram of the structure of the impact head in the lock cup stamping and forming device provided in an embodiment of the present application;

[0039] Figure 10 1 is a schematic structural diagram of a positioning assembly in a lock cup stamping and forming device provided in an embodiment of the present application;

[0040] Figure 11 1 is a schematic structural diagram of a guide assembly in a lock cup stamping and forming device provided in an embodiment of the present application;

[0041] Figure 12 This is a schematic structural diagram of a handle in a lock cup stamping and forming device provided in an embodiment of the present application;

[0042] Figure 13 This is a flow chart of the steps for stamping and forming the lock cup provided in an embodiment of the present application.

[0043] The meanings of the marks in the figure are:

[0044] 11-lock cup, 111-first sleeve, 112-second sleeve, 113-outer step wall, 114-inner step wall;

[0045] 12-flange, 120-flange hole, 121-first conical notch, 122-second limiting wall, 123-first limiting wall, 124-first hole section, 125-second hole section, 126-third hole section;

[0046] 13-bolt, 131-stem, 132-head, 133-second conical notch;

[0047] 14-base, 140-mounting hole;

[0048] 100-lock cup stamping device;

[0049] 3- positioning assembly, 31- positioning platform, 310- positioning hole, 315- positioning segment, 32- support platform, 320- support hole;

[0050] 4-guide assembly, 41-guide rod, 410-second load-bearing surface, 42-limiting head, 45-guide section;

[0051] 5-impact head, 51-forming inclined surface, 510-first inclined surface, 513-second inclined surface, 511-third inclined surface, 512-fourth inclined surface, 52-first accommodating hole, 521-first loading surface, 53-buffer groove, 54-connecting hole, 55-second accommodating hole, 550-second loading surface;

[0052] 6-handle, 61-gripping portion, 62-connecting portion, 621-external thread segment, 622-loading portion, 6220-first loading surface;

[0053] 7-hollow bracket, 70-avoidance hole;

[0054] 8-thrust plate; 9-clearance. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0056] It should be noted that when a component is referred to as being "fixed on" or "set on" another component, it may be fixed or set on the other component directly or indirectly. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description 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, they cannot be understood as limitations on this patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0057] In order to illustrate the technical solution described in this application, the following is a detailed description with reference to specific drawings and embodiments.

[0058] like Figure 1 As shown, the lock cup 11 includes two coaxial and connected sleeves, namely a first sleeve 111 and a second sleeve 112. The inner diameter and outer diameter of the first sleeve 111 are respectively smaller than the inner diameter and outer diameter of the second sleeve 112. An outer step wall 113 (i.e., the outer bottom wall of the second sleeve 112) and an inner step wall 114 (i.e., the inner bottom wall of the second sleeve 112) are formed between the first sleeve 111 and the second sleeve 112. Figure 2 As shown, the flange hole 120 includes three sections, namely the first hole section 124, the second hole section 125 and the third hole section 126. The inner diameter of the second hole section 125 is smaller than the inner diameter of the first hole section 124, and the inner diameter of the second hole section 125 is smaller than the inner diameter of the third hole section 126. A second limiting wall 122 (the bottom wall of the first hole section 124) is formed between the first hole section 124 and the second hole section 125. The second limiting wall 122 is inclined to the radial direction of the second hole section 125. A first limiting wall 123 (the bottom wall of the third hole section 126) is formed between the second hole section 125 and the third hole section 126. The first limiting wall 123 is parallel to the radial direction of the second hole section 125. Figure 3As shown, the first sleeve 111 of the lock cup 11 is inserted into the second hole section 125 and the first hole section 124, the second sleeve 112 is located in the third hole section 126, and the outer step wall 113 of the lock cup 11 abuts against the first limiting wall 123 of the flange hole 120; the inner wall of the end of the third hole section 126 facing away from the first hole section 124 is provided with a first conical notch 121, and the outer peripheral surface of the head 132 of the bolt 13 with a hexagonal inner hole is provided with a second conical notch 133. Please refer to Figure 5 As shown. Figure 3 As shown, use a flat shovel, screwdriver or other slender tool with a hammer to expand the end of the first sleeve 111 away from the second sleeve 112 until the first sleeve 111 is deformed and tightly attached to the second limiting wall 122. Figure 4 As shown, the bolt 13 (hexagon socket bolt 13) is passed through the lock cup 11 and locked in the mounting hole 140 (the mounting hole 140 is a threaded hole) of the base 14. The head 132 of the bolt 13 abuts against the inner step wall 114 of the lock cup 11. A slender tool is used to expand the end of the second sleeve 112 away from the first sleeve 111 until the second sleeve 112 is deformed and abuts against the first conical notch 121. Figure 6 As shown, the end portion of the second sleeve 112 away from the first sleeve 111 is pressed inward until the end of the second sleeve 112 away from the first sleeve 111 is deformed and abuts against the second conical notch 133 of the head 132 of the hexagon socket bolt 13.

[0059] During the above process, a slender tool is used in conjunction with a hammer to strike various locations of the first sleeve 111 along the ring, causing uneven deformation of the lock cup 11, that is, uneven deformation of various locations around the first sleeve 111 of the lock cup 11.

[0060] The embodiment of the present application provides a locking cup stamping and forming device 100 for uniformly deforming the first sleeve 111 of the locking cup 11 and fixing it in the flange hole 120 of the flange 12. Figure 7 As shown, the lock cup stamping and forming device 100 includes:

[0061] The positioning assembly 3 includes a positioning platform 31 having a positioning hole 310 extending therethrough. The positioning platform 31 is configured to be disposed within the lock cup 11 and axially abut against the bottom wall of the second sleeve 112 to press the lock cup 11 against the first limiting wall 123 of the flange hole 120.

[0062] The guide assembly 4 includes a guide rod 41. The guide rod 41 passes through the positioning hole 310. The distal end of the guide rod 41 protrudes from the first sleeve 111 of the lock cup 11. An annular gap 9 is formed between the outer circumference of the guide rod 41 and the inner circumference of the first sleeve 111. The inner diameter of the positioning hole 310 and the size of the portion of the guide rod 41 located within the positioning hole 310 are matched to achieve coaxiality between the guide rod 41 and the first sleeve 111. That is, the positioning platform 31 is used to position the guide rod 41 coaxially with the first sleeve 111.

[0063] The impact head 5 has a formed bevel 51 that tapers in the direction toward the guide rod 41. The impact head 5 is used to be connected to the end of the guide rod 41, for example, coaxially connected. With the guidance of the guide rod 41, the impact head 5 can slide axially; the formed bevel 51 has a minimum outer diameter and a maximum outer diameter, wherein the minimum outer diameter is smaller than the inner diameter of the first sleeve 111, and the maximum outer diameter is larger than the inner diameter of the first sleeve 111, and the slope of the formed bevel 51 is greater than or equal to the slope of the second limiting wall 122 of the flange 12.

[0064] The operator can apply an axial impact force to the impact head 5, thereby pushing the impact head 5 toward the positioning platform 31. Due to the slope of the formed inclined surface 51 on the impact head 5 and the arrangement of the gap 9, the end of the impact head 5 facing the positioning platform 31 can enter the gap 9. As the impact head 5 moves, the formed inclined surface 51 pushes the first sleeve 111 to deform and expand outward until the first sleeve 111 abuts against the second limiting wall 122. This completes the locking of the first sleeve 111 and the flange 12.

[0065] The lock cup stamping and forming device 100 provided in the embodiment of the present application positions the guide rod 41 coaxially with the lock cup 11 through the positioning platform 31. The impact head 5 can slide axially by the guidance of the guide rod 41. During the sliding process of the impact head 5, its formed inclined surface 51 enters the first sleeve 111 of the lock cup 11 and pushes the first sleeve 111 to expand outward. During this process, the axial movement of the impact head 5 is precisely limited. Therefore, the formed inclined surface 51 can accurately deform the first sleeve 111 of the lock cup 11 and accurately adapt to the second limiting wall 122 of the flange 12, thereby improving the assembly balance and stability of the lock cup 11 and the flange 12, reducing damage to the lock cup 11 and the flange 12, and reducing the batch rework of the lock cup 11, thereby improving assembly efficiency.

[0066] The positioning platform 31 is used to keep the guide rod 41 and the first sleeve 111 coaxial, and a gap 9 needs to be reserved between the guide rod 41 and the first sleeve 111. Figure 10 and Figure 11As shown, at least a portion of the positioning hole 310 is a positioning segment 315, and a portion on the guide rod 41 is a guide segment 45. The sizes of the positioning hole 310 and the guide rod 41 are precisely matched to achieve axial positioning of the guide rod 41, and the sizes of other parts of the guide rod 41 are configured to form a gap 9 with the first sleeve 111.

[0067] In one embodiment, the inner diameter of the positioning hole 310 is smaller than the inner diameter of the first sleeve 111 , and the outer diameter of the guide rod 41 is equal to or slightly smaller than the inner diameter of the positioning hole 310 , thereby forming the above-mentioned gap 9 .

[0068] In other optional embodiments, the inner diameter of the positioning hole 310 can be equal to or greater than the inner diameter of the first sleeve 111, the guide rod 41 is stepped, and the outer diameter of the guide section 45 is greater than the outer diameters of other parts. In this way, the coaxiality of the guide rod 41 and the first sleeve 111 and the reservation of the gap 9 can also be achieved at the same time.

[0069] In one embodiment, if Figure 9 As shown, the forming slope 51 includes a first slope 510 and a second slope 513 connected in sequence in a direction away from the guide rod 41, the inclination of the first slope 510 is smaller than the inclination of the second slope 513, the maximum outer diameter of the first slope 510 is larger than the inner diameter of the first sleeve 111, and the minimum outer diameter of the first slope 510 is smaller than the inner diameter of the first sleeve 111.

[0070] The radial height of the first inclined surface 510 can be designed to be relatively small to accommodate its relatively small slope. This design allows the first sleeve 111 to undergo a small amount of pre-deformation due to the relatively small slope of the first inclined surface 510, thereby cushioning its deformation. The second inclined surface 513 then fully expands the first sleeve 111 into shape. This allows the deformation of the first sleeve 111 to occur in stages, preventing the risk of instantaneous damage to the first sleeve 111 from continuous, large-scale deformation.

[0071] The specific slopes of the first inclined surface 510 and the second inclined surface 513 are not limited and can be designed according to specific needs.

[0072] In one embodiment, please refer to Figure 9As shown, on the impact head 5, the first inclined surface 510 includes a third inclined surface 511 and a fourth inclined surface 512 connected in sequence in a direction away from the guide rod 41. The minimum outer diameter of the third inclined surface 511 is smaller than the inner diameter of the first sleeve 111, the maximum outer diameter of the fourth inclined surface 512 is larger than the inner diameter of the first sleeve 111, and the inclination of the third inclined surface 511 is greater than the inclination of the fourth inclined surface 512. The purpose of this arrangement is that the larger inclination of the third inclined surface 511 can effectively cause plastic deformation of the first sleeve 111 (relying solely on the smaller slope of the fourth inclined surface 512 may cause elastic deformation of the first sleeve 111, and the fourth inclined surface 512 may get stuck in the first sleeve 111). The fourth inclined surface 512 provides a certain buffer time for the first sleeve 111 after plastic deformation.

[0073] Please continue reading Figure 9 As shown, a buffer groove 53 is provided on the outer peripheral surface of the impact head 5, and the buffer groove 53 is arranged in a circumferential closed loop. Optionally, there are multiple buffer grooves 53, and the multiple buffer grooves 53 are arranged at intervals along the axial direction.

[0074] The buffer groove 53 provided on the outer peripheral surface of the impact head 5 helps to buffer the impact force exerted on the impact head 5, especially the buffering of the force deviating from the axial direction, thereby preventing the lock cup 11 from being cracked due to excessive local force, and also helps to extend the service life of the impact head 5.

[0075] The outer peripheral surface of the impact head 5 can be designed as a non-circular surface, such as a hexagonal surface, which can be clamped by a wrench or the like to prevent the impact head 5 from rotating. In this way, the impact head 5 is only allowed to move along the axial direction.

[0076] See also Figure 7 、 Figure 8 and Figure 12 As shown, the lock cup stamping and forming device 100 further includes a handle 6 , which is connected to the side of the impact head 5 facing away from the guide rod 41 , and can be a detachable connection or a non-detachable connection.

[0077] The handle 6 can be designed to be easy for the operator to hold and use.

[0078] See also Figure 7 and Figure 8 As shown, the handle 6 includes a gripping portion 61 and a connecting portion 62 connected in an axial direction. The end of the impact head 5 facing the connecting portion 62 is disposed in the connecting hole 54. In other words, the connecting hole 54 is used to achieve an axial connection between the connecting portion 62 and the impact head 5 (which can be an axial two-way limited connection or an axial one-way connection, and the connecting portion 62 can transmit the impact force to the interface of the impact head 5).

[0079] Alternatively, as Figure 12As shown, the connecting portion 62 is provided with an external thread section 621, the connecting hole 54 is an internal thread hole, and the connecting portion 62 is threadedly connected to the impact head 5.

[0080] Optionally, the outer surface of the grip portion 61 is roughened, such as knurled, to increase friction when an operator holds the grip portion 61 .

[0081] See also Figure 12 As shown, a loading portion 622 is provided between the grip portion 61 and the connecting portion 62 and protrudes radially relative to the connecting portion 62. The end surface of the loading portion 622 facing the connecting portion 62 is a first loading surface 6220. Figure 9 As shown, the impact head 5 is further provided with a first receiving hole 52 at the end of the connecting hole 54 that faces the handle 6. The inner diameter of the first receiving hole 52 is larger than the inner diameter of the connecting hole 54. Therefore, the bottom wall of the first receiving hole 52 serves as the first load-bearing surface 521. In other words, the first receiving hole 52 is used to accommodate the loading portion 622, and the first loading surface 6220 abuts against the first load-bearing surface 521. In this way, the impact force from the handle 6 can be transmitted to the first load-bearing surface 521 through the first loading surface 6220, and then to the impact head 5. The impact force will not act on the threads of the connecting portion 62 and the connecting hole 54, thereby avoiding deformation of the threads and the problem of the connection between the connecting portion 62 and the impact head 5 being stuck.

[0082] Please continue reading Figure 9 As shown, in one embodiment, a second receiving hole 55 is formed on the end surface of the impact head 5 facing the positioning platform 31 , and the end of the guide rod 41 is disposed in the second receiving hole 55 .

[0083] Because the impact force passes through the handle 6 and the impact head 5, and the impact head 5 and the handle 6 move axially together, in one embodiment, the distal end of the guide rod 41 abuts against the impact head 5, and the guide rod 41 is configured to slide axially within the lock cup 11. That is, under the action of the impact force, the handle 6, the impact head 5, and the guide rod 41 all slide along the positioning platform 31. At this time, the guide rod 41 does not slide in contact with the inner wall of the lock cup 11, thereby preventing scratches on the inner wall of the lock cup 11.

[0084] Specifically, if Figure 9 As shown, the second receiving hole 55 is connected to the connecting hole 54, and the inner diameter of the second receiving hole 55 is larger than that of the connecting hole 54. Therefore, the bottom wall of the second receiving hole 55 serves as the second loading surface 550, and the end surface of the guide rod 41 serves as the second load-receiving surface 410. In this way, the impact force is transmitted from the impact head 5 to the guide rod 41 without affecting the threads of the connecting hole 54.

[0085] In an optional embodiment, the second accommodating hole 55 may be configured not to communicate with the connecting hole 54 . In this case, the second accommodating hole 55 is a blind hole, and its bottom wall serves as the first loading surface 6220 .

[0086] In another embodiment, the guide rod 41 is configured to remain fixed in the axial direction relative to the positioning platform 31, and the guide rod 41 slides through the impact head 5. In this case, the handle 6 and the impact head 5 slide together on the guide rod 41, which can also achieve the outward expansion deformation of the first sleeve 111 by the impact head 5.

[0087] It is understood that the guide rod 41 remains coaxial with the impact head 5 and the handle 6, but there is no axial overlap between the guide rod 41 and the handle 6. That is, after the guide rod 41 passes through the impact head 5, it does not form an axial abutment with any part of the handle 6. This can be achieved by adjusting the shape and length of the handle 6 to avoid the guide rod 41.

[0088] Please refer to Figure 7 、 Figure 8 and Figure 10 As shown, the positioning assembly 3 also includes a support platform 32, which is connected to the end of the positioning platform 31 facing away from the impact head 5, and a support hole 320 is provided on the support platform 32 that is coaxially connected to the positioning hole 310, and the inner diameter of the support hole 320 is greater than or equal to the inner diameter of the positioning hole 310; the end of the positioning platform 31 facing the support platform 32 protrudes from the end faces of the lock cup 11 and the flange 12.

[0089] The purpose of this setting is that the inner diameter of the support hole 320 is greater than or equal to the inner diameter of the positioning hole 310. When the guide rod 41 slides, the support hole 320 can avoid the guide rod 41 and will not hinder the sliding of the guide rod 41; the end of the positioning platform 31 facing the support platform 32 protrudes from the end faces of the lock cup 11 and the flange 12. By applying force to the end face of the support platform 32 facing away from the positioning platform 31, the positioning platform 31 can be pressed against the inner step wall 114 of the lock cup 11 without sliding with the guide rod 41, and the force will not act on the end face of the flange 12, nor on the end face of the second sleeve 112 of the lock cup 11, thereby avoiding damage to the end faces of the flange 12 and the lock cup 11.

[0090] In an alternative embodiment, see Figure 7 and Figure 10 As shown, the inner diameter of the support hole 320 is larger than the inner diameter of the positioning hole 310 , and the end of the guide rod 41 away from the impact head 5 forms a limiting head 42 , which is used to abut against the bottom wall of the support hole 320 .

[0091] By setting the limiting head 42 , when the guide rod 41 is inserted into the positioning hole 310 , it is only necessary to ensure that the limiting head 42 abuts against the inner wall of the support hole 320 , which indicates that the guide rod 41 is inserted into place.

[0092] like Figure 7 and Figure 8 As shown, the axial depth of the support hole 320 is greater than the axial height of the stopper 42. Similarly, when a force is applied to the end face of the support platform 32 facing away from the positioning platform 31, the force can be completely prevented from acting on the stopper 42, thereby avoiding obstruction of the sliding of the guide rod 41.

[0093] The outer peripheral surface of the support platform 32 can be optionally designed as a non-circular surface, such as a hexagonal surface, and the hexagonal surface can be clamped by, for example, a wrench to prevent the support platform 32 and the positioning platform 31 from rotating.

[0094] See also Figure 7 and Figure 8 As shown, the lock cup stamping forming device 100 further includes a thrust plate 8, which is disposed between the limit head 42 and the bottom wall of the support hole 320. The thrust plate 8 can be made of a material with high strength and good wear resistance to reduce deformation caused by the interaction between the limit head 42 and the support platform 32.

[0095] It is understandable that when the thrust disk 8 is provided between the limit head 42 and the bottom wall of the support hole 320 , the axial depth of the support hole 320 should also be greater than the sum of the axial height of the limit head 42 and the thickness of the thrust disk 8 .

[0096] like Figure 8 As shown, the lock cup stamping and forming device 100 further includes a hollow bracket 7, which is fixedly mounted on a floor, wall, or the like, and is used to abut against the end face of the support platform 32 facing away from the positioning platform 31, that is, to provide a force to the support platform 32 to press the positioning platform 31. Furthermore, the hollow bracket 7 has an escape hole 70, the inner diameter of which is greater than or equal to the inner diameter of the support hole 320. When the guide rod 41 slides, the limit head 42 can enter the escape hole 70 according to the required sliding distance of the guide rod 41 during the forming process without being obstructed by the hollow bracket 7.

[0097] In an optional embodiment, the inner diameter of the avoidance hole 70 is larger than the inner diameter of the support hole 320, which can reduce the alignment accuracy of the support platform 32 and the hollow bracket 7, that is, the avoidance limit head 42 can be achieved without precise alignment between the avoidance hole 70 and the support hole 320.

[0098] See also Figure 13 As shown, and in conjunction with Figure 7 and Figure 8 As shown, the embodiment of the present application further provides a method for stamping and forming a lock cup 11, which uses the lock cup stamping and forming device 100 described in the above embodiments, and includes:

[0099] Place the positioning platform 31 in the second sleeve 112;

[0100] Pass the guide rod 41 through the positioning platform 31 so that the guide rod 41 and the locking cup 11 remain coaxial;

[0101] Connect the impact head 5 to the end of the guide rod 41;

[0102] Arrange the cup stamping device, flange 12 and lock cup 11 in a vertical position, so that the impact head 5 is located above the guide rod 41, and the end surface of the positioning platform 31 facing away from the impact head 5 is limited and supported;

[0103] A force is applied to the impact head 5 to push the impact head 5 to move axially until the forming inclined surface 51 enters the first sleeve 111 and pushes the first sleeve 111 to expand outward.

[0104] In one embodiment, the lock cup 11 stamping method includes:

[0105] Insert the positioning platform 31 into the second sleeve 112 and abut against the second limiting wall 122 of the lock cup 11;

[0106] Pass the guide rod 41 through the positioning platform 31 so that the limit head 42 abuts against the bottom wall of the support hole 320 and keeps the guide rod 41 and the lock cup 11 coaxial.

[0107] Connect the impact head 5 to the end of the guide rod 41, and connect the impact head 5 to the connecting portion 62 of the handle 6;

[0108] The locking cup stamping device 100, flange 12 and locking cup 11 are arranged vertically, so that the impact head 5 is located above the guide rod 41, and the end surface of the support platform 32 facing away from the positioning platform 31 abuts against the hollow bracket 7;

[0109] The impact head 5 is pushed downwardly along the axial direction by applying force to the handle 6, so as to push the impact head 5 and the guide rod 41 until the chamfered surface of the forming slope 51, the first slope 510, and the second slope 513 push the first sleeve 111 outward in sequence; the guide rod 41 and the limit head 42 move downwardly along the axial direction and can enter the support hole 320 and the avoidance hole 70 in sequence.

[0110] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A lock cup stamping device, characterized in that: Used to fix the lock cup in the flange hole of the flange, the lock cup includes a first sleeve and a second sleeve connected coaxially, the inner diameter of the first sleeve is smaller than the inner diameter of the second sleeve, the outer diameter of the first sleeve is smaller than the outer diameter of the second sleeve, the inner wall of the flange hole forms a first limiting wall for resisting the second sleeve, and a second limiting wall for cooperating with the first sleeve; the lock cup stamping forming device includes: a positioning assembly comprising a positioning platform having a positioning hole, the positioning platform being configured to be disposed within the second sleeve and axially abutting against an inner bottom wall of the second sleeve to press the locking cup against the first limiting wall of the flange hole; a guide assembly comprising a guide rod coaxially disposed in the positioning hole, a distal end of the guide rod protruding from the first sleeve, and a gap formed between an outer circumferential surface of the guide rod and an inner circumferential surface of the first sleeve; an impact head having a formed inclined surface that tapers toward the guide rod, the impact head being used to connect to the guide rod and being able to slide axially along the lock cup; the maximum outer diameter of the formed inclined surface being greater than the inner diameter of the first sleeve, and the minimum outer diameter of the formed inclined surface being less than the inner diameter of the first sleeve; The forming inclined surface includes a first inclined surface and a second inclined surface sequentially connected in a direction away from the guide rod, the inclination of the second inclined surface is greater than the inclination of the first inclined surface, the maximum outer diameter of the first inclined surface is greater than the inner diameter of the first sleeve, and the minimum outer diameter of the first inclined surface is smaller than the inner diameter of the first sleeve; The first inclined surface includes a third inclined surface and a fourth inclined surface sequentially connected in a direction away from the positioning platform, the slope of the third inclined surface is greater than the slope of the fourth inclined surface, the minimum outer diameter of the third inclined surface is smaller than the inner diameter of the first sleeve, and the maximum outer diameter of the fourth inclined surface is greater than the inner diameter of the first sleeve; The lock cup stamping forming device further includes a support platform connected to an end of the positioning platform facing away from the impact head, the support platform being provided with a support hole coaxially connected to the positioning hole; an end of the positioning platform facing the support platform protrudes from the end surfaces of the lock cup and the flange; The inner diameter of the support hole is larger than the inner diameter of the positioning hole. The guide assembly also includes a limit head, which is connected to the end of the guide rod facing away from the impact head. The outer diameter of the limit head is larger than the outer diameter of the guide rod. The limit head is used to abut against the bottom wall of the support hole.

2. The lock cup stamping and forming device according to claim 1, characterized in that: One or more buffer grooves spaced apart in the axial direction are provided on the outer peripheral surface of the impact head.

3. The lock cup stamping and forming device according to claim 1, characterized in that: A second accommodating hole is formed on an end surface of the impact head facing the positioning platform, and the end of the guide rod abuts against the bottom wall of the second accommodating hole.

4. The lock cup stamping and forming device according to claim 1, characterized in that: The axial depth of the support hole is greater than the axial height of the limiting head.

5. The lock cup stamping and forming device according to claim 1, characterized in that: The lock cup stamping and forming device further comprises a hollow bracket for abutting against the end face of the support platform facing away from the positioning platform, and the hollow bracket has an avoidance hole for avoiding the limiting head.

6. The lock cup stamping and forming device according to any one of claims 1 to 5, characterized in that: The lock cup stamping and forming device further includes a handle, which includes a gripping portion and a connecting portion connected along the axial direction, and a connecting hole that cooperates with the connecting portion is formed on the impact head.

7. The lock cup stamping and forming device according to claim 6, characterized in that: The connecting hole is a threaded hole, and an external thread section adapted to the threaded hole is formed on the connecting portion; a first accommodating hole is also formed on the impact head at the end of the connecting hole away from the guide rod, and the inner diameter of the first accommodating hole is larger than the inner diameter of the connecting hole; the handle also includes a loading portion arranged between the connecting portion and the gripping portion, and a first loading surface is formed on the loading portion for abutting against the bottom wall of the first accommodating hole.

8. A lock cup stamping method, using the lock cup stamping device according to any one of claims 1 to 7, characterized in that: include: placing the positioning platform in the second sleeve; Passing the guide rod through the support hole of the support platform and the positioning hole of the positioning platform, so that the guide rod and the lock cup remain coaxial; Connecting the impact head to the end of the guide rod; Arrange the cup stamping device, the flange and the lock cup in a vertical position so that the impact head is located above the guide rod, and provide position limiting support for the end face of the positioning platform facing away from the impact head; Apply force to the impact head to push the impact head to move axially until the third inclined surface, the fourth inclined surface and the second inclined surface of the forming inclined surface sequentially enter the first sleeve and push the first sleeve to expand outward.

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