CN109365652B - All-metal preset torque nut opposite side middle pressing three-point pressing tool - Google Patents
All-metal preset torque nut opposite side middle pressing three-point pressing tool Download PDFInfo
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- CN109365652B CN109365652B CN201811490678.7A CN201811490678A CN109365652B CN 109365652 B CN109365652 B CN 109365652B CN 201811490678 A CN201811490678 A CN 201811490678A CN 109365652 B CN109365652 B CN 109365652B
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- 238000003825 pressing Methods 0.000 title claims abstract description 78
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000004080 punching Methods 0.000 claims description 29
- 239000000945 filler Substances 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses an all-metal preset torque nut opposite side middle pressing three-point pressing tool, wherein a guide pillar of an upper die tool is arranged corresponding to a guide sleeve of a lower die plate; the first in-place screw cap on the station to be filled is filled into the feeding guide groove of the screw cap on the lower layer by the screw cap filling rod of the lower die tooling; the nut push rod pushes the first in-place nut to push the nut to the station to be pressed of the nut limiting block along the nut feeding guide groove; the nut limiting mechanism forms a gate opening which is controlled to be opened and closed by the nut supporting plate between the blanking slot hole and the limiting slot; the punch rod driving mechanism consists of a plurality of groups of punch rod driving devices which synchronously act, the punch rod connecting block and the pressing point driving block are provided with wedge blocks, the wedge blocks are correspondingly provided with a first working inclined plane and a second working inclined plane, the first working inclined plane and the second working inclined plane are in parallel contact, and the punch rod connecting block is driven to punch nuts to be pressed on the nut supporting plate. The pressing tool is convenient to operate, high in positioning accuracy, good in torque stability and good in safety performance, and is suitable for opposite side middle pressing three-point pressing of all-metal preset torque nuts of various types.
Description
Technical Field
The invention relates to the technical field of fastener manufacturing, in particular to a riveting tool for nuts, and particularly relates to a pressing tool for pressing three points on opposite sides of an all-metal preset torque nut.
Background
23% Of maintenance problems in the automotive industry are caused by loosening of fasteners, which is a common failure mode of threaded connection, and the problems of light weight, normal work and serious personal safety are endangered. Thus, preventing loosening of threaded connections is an important task for fastener design.
The all-metal preset torque nut utilizes the deformation of the screw thread to eliminate the screw thread gap, increases the screw thread friction force, and ensures that the bolt and the nut are firmly locked together so as to achieve the aim of preventing looseness.
The types of nuts and the pressing modes are many, and the types of the nuts are common hexagonal pyramid nuts, hexagonal rim cone nuts and common hexagonal nuts, and the pressing modes are various: there are a tapered surface or top surface as shown in fig. 12 and 13, a pair of opposite sides as shown in fig. 14, and a pair of opposite sides with a center three point as shown in fig. 15 and 16, etc. Wherein, the flange nut and the common hexagon nut are pressed against the middle three points of the edge most difficult to realize.
At present, the conventional locknut press riveting equipment or tool mainly comprises a top press device, such as fig. 12, 13 and 14, wherein the press direction is perpendicular to the top surface, and the press die is coaxial with the screw thread axis of the nut. Typically comprising a feed mechanism, a turntable mechanism, a punching mechanism, etc. The nuts slide or are pushed to the turntable mechanism from the feeding mechanism, then the nuts are transported to the pressing station by the turntable, and the top pressing operation is carried out on the nuts at the corresponding positions by the impact mechanism. The equipment and the tool adopt a turntable for positioning, the positioning precision is low, the lateral pressing of the middle position of the opposite side of the nut cannot be realized, and particularly the flange type nut cannot be pressed.
In addition, there are also vertical punches used for manual feeding production, which have low efficiency, poor safety, poor consistency of pressing deformation and unstable torque. Therefore, the conventional pressing tool is designed with a lifting space. Aiming at the opposite side middle-pressing three-point all-metal preset torque nut, it is necessary to design a pressing tool which is convenient to operate, high in positioning precision, good in torque stability and good in safety performance and can be suitable for various products.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the tool for pressing the opposite side middle of the all-metal preset torque nut at three points, which has the advantages of convenient operation, high positioning precision, good torque stability and good safety performance, and is suitable for pressing the opposite side middle of all-metal preset torque nuts at three points.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The full-metal preset torque nut opposite side middle pressing three-point pressing tool comprises an upper die tool and a lower die tool; the upper die tooling comprises a guide post and a pressing point driving block which are fixed on an upper die plate; the guide post is arranged corresponding to the guide sleeve of the lower die plate, the lower end part of the pressure point driving block is a wedge block, the wedge block is provided with a first working inclined plane, and the first working inclined plane is parallel to a second working inclined plane of the punch rod connecting block;
the lower die tooling comprises a lower die plate, a guide sleeve, a nut feeding mechanism, a nut limiting mechanism and a punch rod driving mechanism; wherein,
The nut feeding mechanism comprises an upper layer nut feeding guide groove, a nut filling rod, a nut push rod, a nut waiting rod and a lower layer nut filling guide groove; the nut filler rod is arranged corresponding to a to-be-filled station on the upper nut filler guide groove, and fills a first in-place nut on the to-be-filled station into the lower nut filler guide groove; a positioning through hole is arranged on the lower layer nut feeding guide groove; a spring pin arranged on the nut waiting rod stretches in the positioning through hole to limit the movement of a first in-place nut on the lower nut feeding guide groove; the nut push rod pushes the first in-place nut to push the nut to the station to be pressed of the nut limiting block along the nut feeding guide groove;
The nut limiting mechanism comprises a nut limiting block and a nut supporting plate which are arranged on the lower die plate; the nut limiting block is provided with a blanking slot hole and a limiting groove which are communicated, and a gate controlled to be opened and closed by a nut supporting plate is formed between the blanking slot hole and the limiting groove;
The punching rod driving mechanism consists of a plurality of groups of punching rod driving devices which synchronously act, and each group of punching rod driving device comprises a punching rod fixing seat, a spring fixing bolt, a reset spring, a spring limiting block, a punching rod connecting block and a pressing point punching rod, wherein the punching rod fixing seat is locked on the lower template; the punch connecting block is arranged on the punch fixing seat in a sliding manner, the spring limiting block is fixedly arranged on the punch fixing seat, the reset spring is sleeved on the spring fixing bolt, the spring fixing bolt penetrates through the spring limiting block to be locked on the punch connecting block, and the pressing punch is locked on the punch connecting block; the end part of the punch connecting block is a wedge-shaped block, the wedge-shaped block is provided with a second working inclined plane, and after the pressing point driving block is pressed downwards to be in contact with the punch connecting block, the punch connecting block is driven to punch a nut to be pressed on the nut supporting plate through parallel contact between the second working inclined plane and the first working inclined plane.
The tool for pressing the three points on the opposite sides of the all-metal preset torque nut can be used for pressing the three points on the opposite sides of the all-metal preset torque nut, and the limit groove of the nut limiting block can be designed into a step groove matched with the outer contour of the hexagonal rim nut.
The technical scheme has the advantages that:
Firstly, the pressing tool is provided with the automatic feeding and blanking device, so that manual discharging and taking are not needed, the production efficiency and the operation safety are improved, and the automatic production is realized.
Secondly, the punching rod drives the slide block structure combined by the wedge faces to realize lateral pressing, so that the multi-point pressing of the nuts on the middle of opposite sides is realized, and the pressing positioning precision is high.
Thirdly, the multiple groups of punching rod driving devices which synchronously act realize the automatic production of all-metal preset torque nuts for pressing multiple points in the middle of opposite sides, the consistency of the pressing deformation is good, the torque is more stable, and the product quality is improved.
Fourthly, the nut limiting block can meet the pressing of the hexagonal rim nuts and the hexagonal nuts, and the diversified production of products is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic perspective view of a press tooling according to the present invention;
FIG. 2 is a schematic top view of the press tooling of the present invention;
FIG. 3 is a schematic diagram of a third perspective view of the press tooling of the present invention;
FIG. 4 is a schematic perspective view of a nut waiting bar of the present invention;
FIG. 5 is a schematic cross-sectional view of a nut stock rod of the present invention;
FIG. 6 is a schematic perspective view of a pressing tool according to the present invention;
FIG. 7 is a schematic diagram showing a three-dimensional structure of a pressing tool according to the present invention;
fig. 8 is a schematic diagram of a three-dimensional structure of the pressing tool of the present invention;
FIG. 9 is a schematic perspective view of a pressing tool according to the present invention;
fig. 10 is a schematic diagram of a three-dimensional structure of the pressing tool according to the present invention;
FIG. 11 is a schematic perspective view of a nut stopper according to the present invention;
FIG. 12 is a perspective view of a hexagonal cone nut with a tapered surface;
FIG. 13 is a schematic perspective view of a hexagonal rim nut with a pressed top surface;
FIG. 14 is a schematic perspective view of a hexagonal rim cone nut with opposite sides of the capping portion;
FIG. 15 is a schematic perspective view of a hexagonal rim nut with three points in the middle of the press pair;
fig. 16 is a schematic perspective view of a hexagonal rim nut with three points in the middle of the pair of edges.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.
In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.
The invention relates to an all-metal preset torque nut opposite side middle pressing three-point pressing tool which mainly comprises an upper die tool and a lower die tool, and is described with reference to fig. 1 to 11. The present invention will be described in detail with reference to a hexagonal nut.
The upper die tooling mainly comprises an upper die plate 1, a guide post 3 and a pressing point driving block 5.
Specifically, the guide post 3 is fixed on the upper die plate 1, and is arranged corresponding to the guide sleeve 4 fixed on the lower die plate 2, so that when the lower die plate moves downwards, the guide post 3 is inserted into the guide sleeve 4, and the guide post 3 and the guide sleeve 4 cooperate to play a role in guiding and accurate positioning.
The pressing point driving block 5 is also fixed on the upper die plate 1, the lower end part of the pressing point driving block is a wedge-shaped block, the wedge-shaped block pressing point driving block is provided with a first working inclined plane 51, the first working inclined plane 51 is parallel to a second working inclined plane 141 of the punch rod connecting block 14 of the lower die plate 2, and when the lower die plate moves downwards, the pressing point driving block 5 and the punch rod connecting block 14 are contacted through the first working inclined plane 51 and the second working inclined plane 141 so as to drive the punch rod connecting block 14 to move towards the direction of the nut 18 to be pressed along the long chute of the punch rod fixing seat 11, so that the pressing process is completed. The middle of the pressure point driving block 5 is provided with a U-shaped groove 52 which is used for avoiding the spring fixing bolt 9 locked on the punch rod connecting block 14 and preventing the spring fixing bolt 9 from being impacted on the rod part during the pressing.
The lower die tooling mainly comprises a lower die plate 2, a guide sleeve 4, a nut feeding mechanism, a nut limiting mechanism and a punch rod driving mechanism.
Specifically, the nut feeding mechanism comprises an upper nut feeding guide groove 19, a nut packing rod 20, a nut push rod 21, a nut waiting rod 22, a lower nut packing guide groove 23, a first feeding cylinder 24 and a second feeding cylinder 25. The screw cap is automatically fed by the vibration plate through the screw cap feeding mechanism. The nut feeding mechanism is provided with an upper double-layer guide groove structure and a lower double-layer guide groove structure, the upper double-layer guide groove structure and the lower double-layer guide groove structure comprise an upper nut filler guide groove 23 and a lower nut feeding guide groove 19, and the upper nut filler guide groove 23 and the lower nut feeding guide groove 19 are arranged vertically in space.
The nut filler rod 20 is arranged corresponding to a station to be filled on the upper nut filler guide groove 23, and the station to be filled is the station of the first in-place nut 17 on the upper nut filler guide groove 23.
The hexagonal nuts are transported to the station to be filled through the upper nut filling guide groove 23 under the action of the thrust of the vibration plate, and at this time, the first in-place nut 17 cannot fall freely into the lower nut feeding guide groove 19 due to the lateral pressure output by the vibration plate. The first feed cylinder 24 pushes the nut filler rod 20 to vertically fill the lower nut feed channel 19 with the first in-place nut 17, and the nut filler rod 20 is reset by the first feed cylinder 24. Corresponding to the station to be filled, a positioning through hole is arranged on the lower layer nut feeding guide groove 19.
A spring pin 221 and a lifting spring 222 are arranged in the cavity of the nut waiting rod 22, the spring pin 221 is arranged corresponding to a waiting filling station on the upper nut filling guide groove 23, under the action of the lifting spring 222, the spring pin 221 stretches and contracts between a port of the nut waiting rod 22 and a positioning through hole of the lower nut filling guide groove 19, and when the nut filling rod 20 vertically downwards fills the first in-place nut 17 into the nut filling guide groove 19, the top of the spring pin 221 is inserted into a threaded hole of the first in-place nut 17 to limit the free movement of the first in-place nut 17, so that the nut waiting rod 22 limits the movement of the nut in the lower nut filling guide groove 19 in the implementation pressing process.
The second feeding cylinder 25 pushes the nut push rod 21 to push materials, and the first in-place nut 17 is pushed into the station to be pressed of the nut limiting block 8 along the nut feeding guide groove 19 by the nut push rod 21. The top of the spring pin 221 is designed to be an arc, the elastic force of the lifting spring 222 is very small, when the nut push rod 21 pushes the material laterally, the spring pin 221 is compressed back downwards under the action of the pushing force of the nut, the displacement restriction of the nut is relieved, and the nut can be smoothly filled into the station to be pressed of the nut limiting block 8 through the lower-layer nut feeding guide groove 19.
The nut limiting mechanism comprises a pneumatic cylinder 6, a nut supporting plate 7 and a nut limiting block 8.
The nut limiting block 8 is arranged on the lower die plate 2 and used for positioning a hexagonal nut. The nut stopper 8 is concavely provided with a stopper groove 81, and a guiding groove 82 is formed on the wall of the stopper groove 81. The nut limiting block 8 is also provided with a blanking slot 83, the blanking slot 83 is communicated with the limiting groove 81, and a gate controlled to be opened and closed by the nut supporting plate 7 is formed between the blanking slot 83 and the limiting groove 81.
The nut support plate 7 is in clearance fit in the guide groove 82, and the guide groove 82 plays a role in guiding and limiting the nut support plate 7. The pneumatic cylinder 6 pushes the nut supporting plate 7 to move in a telescopic mode so as to open and close the gate. When the nut supporting plate 7 is pushed to extend between the blanking slot 83 and the limit groove 81, the gate is closed, a nut station to be pressed is formed, and the nut supporting plate 7 is used for supporting a hexagonal nut to be pressed; after the pressing is completed, the nut supporting plate 7 is retracted, the gate is opened, and the hexagonal nuts fall into the blanking slots 83 to be stripped. When the pressing is completed and the stripping is completed, the nut feeding mechanism smoothly moves the first in-place nut 17 to the nut pressing station of the nut limiting block 17 by the nut push rod 21 again so as to be pressed.
The limit groove 81 of the nut limit block 8 can be designed into a step groove matched with the outer contour of the hexagonal rim nut so as to be used for yielding the rim of the hexagonal rim nut, thus being capable of being used for pressing the hexagonal rim nut.
The punch driving mechanism consists of a plurality of groups of punch driving devices which synchronously act, and the embodiment is provided with three groups of punch driving devices which are uniformly distributed on the lower module, wherein each group of punch driving devices comprises a spring fixing bolt 9, a reset spring 10, a punch fixing seat 11, a punch connecting block pressing plate 12, a spring limiting block 13, a punch connecting block 14, a punch locking block 15 and a pressing point punch 16.
The punch rod fixing seat 11 is locked on the lower die plate 2, a cross groove is formed in the punch rod fixing seat 11, the cross groove is formed by a long chute and a short chute, the punch rod connecting block 14 is arranged in the long chute in a sliding mode and corresponds to the sliding range of the punch rod connecting block 14, the punch rod fixing seat 11 is further provided with a punch rod connecting block pressing plate 12 locked on the punch rod fixing seat 11, and the punch rod connecting block pressing plate 12 is used for preventing the punch rod connecting block 14 from falling off in the moving process. The spring limiting block 13 is fixed in the short groove, and the spring limiting block 13 is used for supporting the reset spring 10 to complete the reset action of the pressing point punching rod 16.
The end of the punch rod connecting block 14, which is close to the spring limiting block 13, is a wedge block, the wedge block punch rod connecting block 14 is provided with a second working inclined plane 141 corresponding to the first working inclined plane 51 of the block-shaped pressing point driving block 5, and after the pressing point driving block 5 is pressed down to contact with the punch rod connecting block 14, the first working inclined plane 51 arranged in parallel is provided with the parallel contact of the second working inclined plane 141, so that the punch rod connecting block 14 is driven to slide along the long chute of the punch rod fixing seat 11.
The spring fixing bolt 9, the return spring 10, the spring limiting block 13 and the punch connecting block 14 form a punch return assembly. The press point punching rod 16 is locked on the punching rod connecting block 14, and a punching rod locking block 15 is arranged corresponding to the press point punching rod 16, and the punching rod locking block 15 is locked on the punching rod connecting block 14 and used for preventing the press point punching rod 16 from falling off.
The reset spring 10 is sleeved on the spring fixing bolt 9, the spring fixing bolt 9 passes through a middle through hole of the spring limiting block 13 and is locked on the punch rod connecting block 14, and a certain pretightening force is required to be kept between the spring fixing bolt 9 and the spring limiting block 13 by the reset spring 10. When the pressing point driving block 5 is pressed down and the punch connecting block 14 slides under force, the reset spring 10 is compressed; when the pressing point driving block 5 returns, the restoring force of the restoring spring 10 drives the punch connecting block 14 to retreat, and the pressing point punch 16 completes the restoring action.
When the first in-place nut 17 reaches the to-be-pressed station in the nut limiting block 8 to become to-be-pressed nut 18, the spring pin 221 of the nut to-be-pressed rod 22 limits continuous feeding, meanwhile, the lower die plate 2 moves downwards, the pressing point driving block 5 contacts with the punch connecting block 14 and drives the punch connecting block 14 to move along the long chute of the punch fixing seat 11 towards the to-be-pressed nut 18, and the movements of the three pressing point punching rods 16 in the embodiment are synchronous to complete the pressing process of the nuts.
After the nut is pressed, the pressing point driving block 5 returns, the restoring force of the restoring spring 10 drives the punch connecting block 14 to retreat, and the pressing point punch 16 completes the restoring action.
At the same time, the pneumatic cylinder 6 is contracted, so that the gate on the nut limiting block 17 is opened, and the pressed nut falls into the hopper along the blanking groove on the nut limiting block 17.
After the pneumatic cylinder 6 is stretched again to close the gate on the nut stopper 17, the nut push rod 21 pushes the nut positioned by the spring pin 221 again, and the nut feeding mechanism feeds again automatically.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as noted above, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (2)
1. The tool is characterized by comprising an upper die tool and a lower die tool; the upper die tooling comprises a guide post (3) and a pressing point driving block (5) which are fixed on an upper die plate (1); a U-shaped groove (52) is formed in the middle of the pressure point driving block (5), and the U-shaped groove (52) is used for avoiding a spring fixing bolt (9) locked on the punch rod connecting block (14) so as to prevent the spring fixing bolt (9) from being impacted by the rod part during pressing; the guide pillar (3) is arranged corresponding to the guide sleeve (4) of the lower die plate (2), the lower end part of the pressure point driving block (5) is a first wedge-shaped block, the first wedge-shaped block is provided with a first working inclined plane (51), and the first working inclined plane (51) is parallel to a second working inclined plane (141) of the punch rod connecting block (14); the lower die tooling comprises a lower die plate (2), a guide sleeve (4), a nut feeding mechanism, a nut limiting mechanism and a punching rod driving mechanism; the nut feeding mechanism comprises a lower-layer nut feeding guide groove (19), a nut packing rod (20), a nut push rod (21), a nut waiting rod (22), an upper-layer nut packing guide groove (23), a first feeding cylinder (24) and a second feeding cylinder (25); pushing the nut filler rod (20) to vertically downwards fill by the first feeding cylinder (24); the second feeding cylinder (25) pushes the nut push rod (21) to push materials, and the first in-place nut (17) is pushed into a station to be pressed of the nut limiting block (8) along the lower-layer nut feeding guide groove (19) by the nut push rod (21); the upper layer nut filler guide groove (23) and the lower layer nut feeding guide groove (19) are arranged vertically in space; the nut filler rod (20) is arranged corresponding to a to-be-filled station on the upper nut filler guide groove (23), and the nut filler rod (20) fills a first in-place nut (17) on the to-be-filled station into the lower nut filler guide groove (19); a positioning through hole is arranged on the lower layer nut feeding guide groove (19); a spring pin (221) arranged on the nut waiting rod (22) stretches in the positioning through hole to limit the movement of a first in-place nut (17) on the lower nut feeding guide groove (19); the nut push rod (21) pushes the first in-place nut (17) to push into a station to be pressed of the nut limiting block (8) along the lower nut feeding guide groove (19);
the nut limiting mechanism comprises a nut limiting block (8) and a nut supporting plate (7) which are arranged on the lower die plate (2); the nut limiting block (8) is provided with a blanking slot hole (83) and a limiting groove (81) which are communicated, and a gate controlled to be opened and closed by the nut supporting plate (7) is formed between the blanking slot hole (83) and the limiting groove (81);
the punching rod driving mechanism consists of a plurality of groups of punching rod driving devices which synchronously act, wherein each group of punching rod driving device comprises a punching rod fixing seat (11), a spring fixing bolt (9), a reset spring (10), a spring limiting block (13), a punching rod connecting block (14) and a pressing point punching rod (16), wherein the punching rod fixing seat is locked on the lower die plate (2); the punching rod fixing seat (11) is provided with a cross groove, the cross groove consists of a long chute and a short chute, and the punching rod connecting block (14) is arranged in the long chute in a sliding way; the spring limiting block (13) is fixed in the short groove; the punch rod connecting block (14) is arranged on the punch rod fixing seat (11) in a sliding mode, the spring limiting block (13) is fixedly arranged on the punch rod fixing seat (11), the reset spring (10) is sleeved on the spring fixing bolt (9), the spring fixing bolt (9) penetrates through the spring limiting block (13) to be locked on the punch rod connecting block (14), and the press point punch rod (16) is locked on the punch rod connecting block (14); the end part of the punch rod connecting block (14) is a second wedge-shaped block, the second wedge-shaped block is provided with a second working inclined surface (141), and after the pressing point driving block (5) is pressed down to be in contact with the punch rod connecting block (14), the punch rod connecting block (14) is driven to punch a nut to be pressed on the nut supporting plate (7) through parallel contact between the second working inclined surface (141) and the first working inclined surface (51).
2. The all-metal preset torque nut opposite side middle pressing three-point pressing tool as claimed in claim 1, wherein the limit groove (81) of the nut limit block (8) is designed as a step groove matched with the outer contour of the hexagonal rim nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490678.7A CN109365652B (en) | 2018-12-07 | 2018-12-07 | All-metal preset torque nut opposite side middle pressing three-point pressing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490678.7A CN109365652B (en) | 2018-12-07 | 2018-12-07 | All-metal preset torque nut opposite side middle pressing three-point pressing tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109365652A CN109365652A (en) | 2019-02-22 |
| CN109365652B true CN109365652B (en) | 2024-06-04 |
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| CN201811490678.7A Active CN109365652B (en) | 2018-12-07 | 2018-12-07 | All-metal preset torque nut opposite side middle pressing three-point pressing tool |
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| CN209502755U (en) * | 2018-12-07 | 2019-10-18 | 厦门恒耀金属有限公司 | All-metal preset torque nut opposite side 3 points of pressed toolings of intermediate pressure |
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| CN109365652A (en) | 2019-02-22 |
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