Hand-rotating screw riveting press

Abstract

The manual screw riveting press comprises a machine frame arranged on a machine table, a riveting assembly used for connecting a case cover plate and a manual screw in a riveting mode is further arranged on the machine table, a riveting driving assembly used for punching and riveting the manual screw is arranged on the lower portion of the machine frame, and a power element used for providing power for punching and riveting the manual screw is arranged on the upper portion of the machine frame. The structures of the riveting driving part, the riveting assembly and the riveting column are respectively designed, the power element drives the riveting assembly to punch and rivet the hand-rotating screw, the screw of the hand-rotating screw firstly extends into the riveting column by a small length, and the magnet in the riveting column can attract the lower end face of the screw to fix the hand-rotating screw. During riveting, the hand-rotated screw does not shift, positioning is firm and accurate, and the situation that the screw and the riveting column are in butt joint inaccurately, the inner wall of the riveting column makes contact with threads of the screw to be damaged, and accordingly the threads of the screw are crushed is avoided.

Description

Technical Field

[0001] The utility model relates to the field of riveting machines, in particular to a hand-turned screw riveting machine. Background Art

[0002] The assembly of the server chassis (chassis for short) mainly includes the following steps: selecting a suitable chassis, installing the motherboard, installing the CPU, installing the memory, installing the hard disk, installing the power supply, installing the expansion card, connecting the cables, and installing the cover. Since the server works uninterruptedly, the chassis needs to be opened frequently for cleaning and replacement of accessories during use. The traditional server chassis mainly uses an electric screwdriver to loosen the screws to remove the chassis cover. This operation method makes the assembly and disassembly of the chassis cover very troublesome. At the same time, the loosened screws are easy to fall off, causing the assemblers to waste time looking for the fallen screws and affecting the assembly and disassembly efficiency. In order to avoid the phenomenon of the loosened screws falling off the cover, the hand-turned screws are riveted and fixed on the chassis cover to solve the problem of the easy falling of the screws when loosening them. It has become the preferred solution for quick and convenient maintenance of the server chassis. Some riveting machines for hand-turned screws on the market do not have magnets to fix the hand-turned screws. The hand-turned screws are placed unsteadily and are prone to tilting. The positioning is not firm and accurate. In addition, the hand-turned screws are prone to shifting when the rivet pin (or riveting punch) is used to rivet the hand-turned screws. The screw threads are easily damaged by contact with the rivet pin holes, thereby crushing the screw threads. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a hand-turned screw riveting machine.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the hand-turned screw riveting machine includes a machine platform, a frame is provided on the machine platform, a riveting assembly for riveting a chassis cover and a hand-turned screw is also provided on the machine platform, a riveting drive assembly for punching and riveting the hand-turned screws is provided under the frame, and a power element for providing power for punching and riveting the hand-turned screws is provided on the frame.

[0005] Preferably, the power element is a boost cylinder.

[0006] Preferably, the riveting assembly comprises a carrier arranged on the machine platform, a riveting base is provided on the carrier, and a riveting jig is provided on the riveting base;

[0007] A first guide rod assembly is provided on the riveting base, and a riveting jig is connected to the riveting base through the first guide rod assembly, and the riveting jig is moved up or down on the riveting base;

[0008] A first elastic member is provided on the riveting base, one end of the first elastic member is connected to the riveting base, and the other end of the first elastic member is connected to the riveting jig, and the first elastic member provides elastic force for the riveting jig to be lifted and reset;

[0009] The riveting jig is provided with through holes for positioning the hand screws; the riveting base is also provided with riveting columns for riveting the hand screws and the chassis cover plate.

[0010] By adopting the above technical solution, the power element can drive the lifting plate to move up and down through the connecting piece, so that the riveting punch can move up and down with the lifting plate. The first guide rod assembly is provided on the riveting base, and the riveting jig is connected to the riveting base through the first guide rod assembly. The riveting jig can move up or down on the riveting base under the guidance of the first guide rod assembly. When the riveting punch rivets the hand-turned screw placed under it with the lifting plate and driven by the power element, the rivet body of the hand-turned screw can be accurately docked with the expansion head of the riveting column. The design of the first guide rod assembly can ensure the high positioning accuracy of the riveting connection between the rivet body and the chassis cover. The first elastic member is provided on the riveting base, one end of the first elastic member is connected to the riveting base, and the other end is connected to the riveting jig. The first elastic member provides elastic force for the lifting and resetting of the riveting jig, which realizes the automatic separation of the magnet and the screw.

[0011] Preferably, one end of the riveting column is provided with a reaming head for reaming a hand screw so as to achieve a riveted connection with the chassis cover plate, a through hole is provided in the rivet column along the axial direction, and the through hole of the riveting column axially penetrates the reaming head; a sliding part which can slide axially therein is provided in the through hole of the riveting column, one end of the sliding part is fixedly connected to a magnet, and the other end of the sliding part is fixedly connected to a second elastic part.

[0012] By adopting the above technical solution, when the riveting punch drives the hand-turned screw to be pressed down, the screw can be extended into the riveting column, and the lower end face of the screw can be attracted by the magnet in the riveting column, so that the hand-turned screw will not tilt when the riveting punch punches the hand-turned screw, so as to avoid that the thread of the screw will touch the expansion head of the riveting column and be damaged when the screw tilts; in addition, the design of the magnet can also ensure that the hand-turned screw and the riveting column are accurately positioned and docked, and solves the problem that the hand-turned screw is easily displaced and the thread of the screw is damaged when the current riveting machine is used to rivet the hand-turned screw. As the riveting punch continues to punch the thumb screw, the reaming head of the riveting column enlarges the hole on the bottom of the hand screw (i.e., the hole at the lower end of the rivet body in the hand screw) and causes it to warp outward, and the rivet body with the hole at the lower end that warps outward can hook the chassis cover to achieve riveting with the chassis cover; by riveting the thumb screw to the chassis cover together, the thumb screw can be prevented from falling off the chassis when the assembler loosens the thumb screw.

[0013] Preferably, a recess is provided on one side of the sliding member, and a pin rod is provided through the riveting column, and the pin rod limits the sliding of the sliding member through the recess of the sliding member.

[0014] By adopting the above-mentioned technical solution, a recess is provided on one side of the sliding part, and a pin rod is provided through the riveting column. The pin rod can limit the sliding of the sliding part through the recess of the sliding part, so as to achieve precise control of the sliding stroke of the magnet in the riveting column, which avoids the screw being carried out of the riveting column when the screw is separated from the magnet.

[0015] Preferably, the reaming head is arranged in the shape of a truncated cone.

[0016] Preferably, the riveting drive assembly includes a lifting plate, a riveting punch for riveting hand screws is provided below the lifting plate; second guide rod assemblies are provided at both ends of the lifting plate, and the lifting plate moves up and down along the two second guide rod assemblies; a positioning adjustment column is also provided below the lifting plate to position the height of the lifting plate; a connecting piece connected to the output shaft of the power element is provided above the lifting plate, and the power element drives the lifting plate to descend through the connecting piece to rivet the hand screws. The connecting piece can be a connecting rod, but is not limited to this.

[0017] By adopting the above-mentioned technical scheme, the second guide rod assembly can guide the lifting and lowering of the lifting plate to ensure that the riveting punch has high lifting and lowering accuracy with the lifting plate. It not only ensures the high punching accuracy of the riveting punch on the hand screw, but also ensures the high positioning accuracy of the riveted connection between the rivet body in the hand screw and the chassis cover.

[0018] Preferably, light curtains are provided on both sides of the frame; and a display is provided on the frame.

[0019] By adopting the above-mentioned technical solution, when the light curtain detects that a human hand enters the working area of ​​the riveting drive component, it will send a monitoring signal to the controller or control system of the equipment. After receiving the monitoring signal, the controller or control system of the equipment will control the equipment to stop working immediately to avoid accidents of accidental injury to human hands when the riveting drive component is working. It can improve the safety of the production operation environment to meet the requirements of safe production.

[0020] Preferably, a first control button and a second control button are provided on the front side of the machine.

[0021] By adopting the above technical solution, the first control button can be set as the start control button and the second control button can be set as the emergency stop control button according to production needs, or the first control button can be set as the emergency stop control button and the second control button can be set as the start control button. The design of the first control button and the second control button can facilitate the staff to control the start and emergency stop of the equipment at any time to avoid accidents, which can further improve the safety of production.

[0022] Preferably, the hand-turned screw comprises a nut, a screw and a rivet body, the nut and the screw are integrally formed, the screw passes through the center of the rivet body and can rotate freely on the rivet body, and a third elastic member is provided at one end of the screw near the nut.

[0023] It should be noted that the first guide rod assembly includes a first guide rod and a linear bearing, and the linear bearing is sleeved on the first guide rod. The second guide rod assembly includes a second guide rod and a guide sleeve, and the guide sleeve is sleeved on the second guide rod. The first elastic member, the second elastic member and the third elastic member are preferably compression springs.

[0024] Preferably, a controller or a PLC control system is provided for signal control with the power element, the light curtain, the first control button, the second control button and other components respectively. The controller is a PLC programmable logic controller. The PLC programmable logic controller may be a programmable logic controller produced in Shenzhen and having a model number of XDS-40T-D, but is not limited to this.

[0025] The beneficial effects of the utility model are:

[0026] 1. When the screw is inserted into the riveting column, the magnet in the riveting column can absorb the lower end surface of the screw to fix the hand screw, and the hand screw is firmly positioned without tilting; the hand screw will not shift during riveting, and its positioning is accurate, and it avoids the inaccurate docking between the screw and the riveting column and the contact and damage between the inner wall of the riveting column and the screw thread, thereby crushing the screw thread. It effectively solves the problem that the hand screw is easily displaced and the screw thread is crushed when the current riveting machine is used for riveting.

[0027] 2. A first guide rod assembly is provided on the riveting base, and a riveting jig is connected to the riveting base through the first guide rod assembly. Because the riveting jig can be raised or lowered on the riveting base under the guidance of the first guide rod assembly, when the hand screw is riveted downward under the drive of the power element, the reaming head of the riveting column and the rivet body of the hand screw can be accurately docked, which ensures the high accuracy of the riveting connection and positioning of the rivet body of the hand screw and the chassis cover.

[0028] 3. By connecting one end of the first elastic member in the riveting base to the riveting base and the other end of the first elastic member to the riveting jig, the first elastic member provides elastic force for the rising and resetting of the riveting jig, thereby realizing automatic separation of the magnet and the screw.

[0029] 4. A recess is provided on one side of the sliding part in the riveting column, and a pin rod is provided through the riveting column. The pin rod can limit the sliding of the sliding part through the recess of the sliding part, so that the sliding stroke of the magnet in the riveting column can be accurately controlled to prevent the screw from being carried out of the riveting column when the screw is separated from the magnet.

[0030] 5. It is provided with light curtains on both sides of the frame. When the light curtain detects that the worker reaches into the working area of ​​the riveting drive component, the equipment stops working, which avoids the worker's misoperation and work-related accidents when reaching into the working area of ​​the riveting drive component; it is also provided with a first control button and a second control button on the front side of the machine to control the start or emergency shutdown of the equipment at any time, thereby ensuring the high safety of equipment operation and production.

[0031] 6. The structure of the riveting column is designed so that the reaming head of the riveting column enlarges the hole on the bottom surface of the hand screw (i.e., the hole at the lower end of the rivet body) to deform it, so as to realize the riveting of the rivet body and the chassis cover, thereby riveting the hand screw and the chassis cover together, which avoids the problem of the hand screw falling off the chassis cover when the hand screw is loosened later. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0033] Figure 1 It is a three-dimensional diagram of the hand-turned screw riveting machine of the utility model.

[0034] Figure 2 The utility model is a cross-sectional structural diagram of the riveting assembly of the hand-turned screw riveting machine.

[0035] Figure 3 It is a three-dimensional diagram of the riveting assembly of the hand-turned screw riveting machine of the utility model.

[0036] Figure 4 It is a three-dimensional diagram of the riveting drive assembly of the hand-turned screw riveting machine of the utility model.

[0037] Figure 5 The utility model is a cross-sectional structural diagram of the contact between the riveting column, the riveting fixture and the hand-turned screw of the hand-turned screw riveting machine.

[0038] Figure 6 It is a partial enlarged view of the hand-turned screw riveting machine of the utility model.

[0039] Figure 7 It is a schematic diagram of the state in which the hand screw of the hand screw riveting machine of the utility model is locked and fixed with the chassis cover. DETAILED DESCRIPTION

[0040] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] In this embodiment, refer to Figures 1 to 7 As shown, the hand-turned screw riveting machine of the utility model includes a machine platform 1, a frame 2 is provided on the machine platform 1, a riveting assembly 3 for riveting a chassis cover 15 and a hand-turned screw 10 is also provided on the machine platform 1, a riveting driving assembly 4 for riveting the hand-turned screw 10 is provided below the frame 2, and a power element 5 for providing power for riveting the hand-turned screw 10 is provided above the frame 2.

[0043] In one embodiment, the riveting assembly 3 includes a carrier 31 disposed on the machine platform 1 , a riveting base 32 is disposed on the carrier 31 , and a riveting fixture 33 is disposed on the riveting base 32 .

[0044] In one embodiment, a first guide rod assembly 34 is provided on the riveting base 32 , and the riveting jig 33 is connected to the riveting base 32 via the first guide rod assembly 34 . The riveting jig 33 is moved up or down on the riveting base 32 .

[0045] In one embodiment, a first elastic member 35 is provided on the riveting base 32 , one end of the first elastic member 35 is connected to the riveting base 32 , and the other end of the first elastic member 35 is connected to the riveting fixture 33 . The first elastic member 35 provides elastic force for the riveting fixture 33 to be lifted and reset.

[0046] In one embodiment, the riveting jig 33 is provided with a through hole for positioning the hand screw 10 ; the riveting base 32 is provided with a riveting column 6 for riveting the hand screw 10 and the chassis cover 15 together.

[0047] In one of the embodiments, one end of the riveting column 6 is provided with a reaming head 61 for reaming the hand screw 10 so as to be riveted and connected to the chassis cover 15. A through hole is provided in the rivet column 6 along the axial direction, and the through hole of the riveting column 6 axially penetrates the reaming head 61; a sliding member 62 that can slide axially therein is provided in the through hole of the riveting column 6, one end of the sliding member 62 is fixedly connected to a magnet 63, and the other end of the sliding member 62 is fixedly connected to a second elastic member 64.

[0048] In one embodiment, a recess 65 is provided on one side of the sliding member 62 , and a pin 66 is provided through the riveting column 6 . The pin 66 passes through the recess 65 of the sliding member 62 to limit the sliding of the sliding member 62 .

[0049] In one embodiment, the reaming head 61 is configured in the shape of a truncated cone.

[0050] In one embodiment, the riveting drive assembly 4 includes a lifting plate 41, and a riveting punch 42 for riveting the hand-turned screws 10 is provided under the lifting plate 41; second guide rod assemblies 43 are provided at both ends of the lifting plate 41, and the lifting plate 41 performs lifting and lowering movements along the two second guide rod assemblies 43; a positioning adjustment column 44 for positioning the lowering height of the lifting plate 41 is also provided under the lifting plate 41; a connecting piece 45 connected to the output shaft of the power element 5 is provided on the lifting plate 41, and the power element 5 drives the lifting plate 41 to descend through the connecting piece 45 to rivet the hand-turned screws 10.

[0051] In one embodiment, light curtains 7 are respectively provided on both sides of the frame 2 ; and a display 8 is provided on the frame 2 .

[0052] In one embodiment, a first control button 91 and a second control button 92 are disposed on the front side of the machine 1 .

[0053] In one embodiment, the hand screw 10 includes a nut 11, a screw 12 and a rivet body 13. The nut 11 and the screw 12 are integrally formed. The screw 12 passes through the center of the rivet body 13 and can rotate freely on the rivet body 13. A third elastic member 14 is provided at one end of the screw 12 close to the nut 11.

[0054] In one embodiment, the operation process of the hand-turned screw riveting machine is as follows: first, the chassis cover 15 is placed on the riveting jig 33, and the hand-turned screw 10 is placed on the chassis cover 15 and under the riveting punch 42. Since the lifting plate 41 is provided with a connector 45 connected to the output shaft of the power element 5, the power element 5 can drive the lifting plate 41 to move up and down through the connector 45. When the power element 5 drives the lifting plate 41 to descend, the riveting punch 42 can descend with the descent of the lifting plate 41, and the descending riveting punch 42 is pressed against the nut 11 of the hand-turned screw 10; as the power element 5 drives the riveting punch 42 to gradually descend through the lifting plate 41, the nut 11 in the hand-turned screw 10 is pressed and synchronously descends. Since the nut 11 and the screw 12 in the hand-turned screw 10 are integrally formed, the screw 12 in the hand-turned screw 10 can extend into the riveting column 6 as the nut 11 descends. The magnet 63 is fixedly connected to one end of the sliding member 62 of the riveting column 6, so that the riveting column 6 can use the magnet 63 therein to absorb the lower end surface of the screw 12 inserted therein. After the magnet 63 absorbs the screw 12, the riveting punch 42 can prevent the hand-turned screw 10 from tilting when punching the hand-turned screw 10, which prevents the thread in the screw 12 from contacting and being damaged by the expansion head 61 of the riveting column 6 when the screw 12 tilts, thereby damaging the thread of the screw 12. This effectively solves the problem that the hand-turned screw is easily displaced and the thread of the screw is crushed when the current riveting machine rivets the hand-turned screw. The nut 11 continues to descend with the punching of the riveting punch 42 until the upper end surface of the rivet body 13 presses against the inner top surface of the nut 11. At this time, as the riveting punch 42 continues to punch the nut 11 downward under the drive of the power element 5, it pushes the riveting jig 33 downward through the rivet body 13 and the chassis cover 15 in turn. Furthermore, since the riveting column 6 is fixed on the riveting base 32, as the rivet body 13 descends, it will contact the reaming head 61 of the riveting column 6, and when the riveting punch 42 punches the nut 11, the nut 11 directly acts on the rivet body 13, and the lower port 16 of the rivet body 13 will be squeezed with the reaming head 61, so that the lower port 16 of the rivet body 13 is passively reamed outward by the reaming head 61 to achieve the riveting connection between the rivet body 13 and the chassis cover 15, so as to avoid the hand screw 10 from falling off the chassis cover 15 when the hand screw 10 is subsequently loosened, thereby affecting the assembly and disassembly efficiency of the hand screw 10 and the chassis cover 15, which effectively solves the problem of the screw often falling off the chassis cover 15 when the traditional electric screwdriver is used to loosen the screw to remove the chassis cover 15. After the hand screw 10 is riveted with the chassis cover 15 , the chassis cover 15 is removed from the riveting jig 33 , and the hand screw 10 is riveted to the next chassis cover 15 according to the above operation, and the cycle is repeated.

[0055] When the server (computer) chassis needs to be installed with a chassis cover 15, since the nut 11 of the hand screw 10 and the screw 12 are integrally arranged, and the screw 12 passes through the center of the rivet body 13 and can rotate freely on the rivet body 13, the assembler only needs to press the hand screw 10 and manually twist the nut 11 of the hand screw 10 to synchronously drive the screw 12 to rotate and lock the chassis cover 15 on the server chassis. At this time, the chassis cover 15 is installed on the server chassis. When the assembler reversely loosens the screw 12, the third elastic member 14 provides elastic force to the nut 11 and the screw 12, the nut 11 rises, and the screw 12 can retract into the rivet body 13 to release the chassis cover 15 from locking the server chassis. In fact, there is no need to use an electric screwdriver to tighten the screws when installing and removing the chassis cover 15, which makes the installation and removal of the chassis cover 15 simpler, faster, more time-saving and labor-saving, and can further improve the efficiency of the assemblers in installing and removing the screws of the chassis cover 15.

[0056] The above embodiment is only an example of the present invention and is not intended to limit the implementation and scope of rights of the present invention. Any technical solution that is identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-turned screw riveting machine, comprising a machine platform, a frame is arranged on the machine platform, and the characteristics are: The machine is also provided with a riveting assembly for riveting the chassis cover plate and the hand screws, a riveting driving assembly for punching and riveting the hand screws is provided under the frame, and a power element for providing power for punching and riveting the hand screws is provided on the frame; The riveting assembly includes a carrier arranged on the machine platform, a riveting base is arranged on the carrier, a riveting fixture is arranged on the riveting base, and a first elastic member is also arranged on the riveting base; The riveting jig is provided with through holes for positioning the hand screws; the riveting base is also provided with riveting columns for riveting the hand screws and the chassis cover plate; A reaming head is provided at one end of the riveting column for reaming a hand-screw so as to achieve a riveted connection with the chassis cover plate. A through hole is provided in the rivet column along the axial direction, and the through hole of the riveting column axially penetrates the reaming head. A sliding part that can slide axially therein is provided in the through hole of the riveting column, and a magnet is fixedly connected to one end of the sliding part, and a second elastic part is fixedly connected to the other end of the sliding part.

2. The hand-turned screw riveting machine according to claim 1, characterized in that: The riveting base is provided with a first guide rod assembly, the riveting jig is connected to the riveting base through the first guide rod assembly, and the riveting jig is moved up or down in the riveting base; One end of the first elastic member is connected to the riveting base, and the other end of the first elastic member is connected to the riveting fixture. The first elastic member provides elastic force for the riveting fixture to be lifted and reset.

3. The hand-turned screw riveting machine according to claim 1, characterized in that: A concave portion is provided on one side of the sliding member, and a pin rod is provided through the riveting column. The pin rod limits the sliding of the sliding member through the concave portion of the sliding member.

4. The hand-turned screw riveting machine according to claim 1, characterized in that: The reaming head is arranged in a truncated cone shape.

5. The hand-turned screw riveting machine according to claim 1, characterized in that: The riveting drive assembly includes a lifting plate, and a riveting punch for riveting hand-turned screws is provided under the lifting plate; second guide rod assemblies are provided at both ends of the lifting plate, and the lifting plate moves up and down along the two second guide rod assemblies; a positioning adjustment column is also provided under the lifting plate to position the height to be lowered; a connecting piece connected to the output shaft of the power element is provided on the lifting plate, and the power element drives the lifting plate to descend through the connecting piece to rivet the hand-turned screws.

6. The hand-turned screw riveting machine according to claim 1, characterized in that: Light curtains are respectively arranged on both sides of the frame; and a display is arranged on the frame.

7. The hand-turned screw riveting machine according to claim 1, characterized in that: The front side of the machine is provided with a first control button and a second control button.

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