CN218517657U

CN218517657U - Screw cold heading machine

Info

Publication number: CN218517657U
Application number: CN202222343132.7U
Authority: CN
Inventors: 郭强; 卢方炎
Original assignee: Taicang Hongtian Fastener Manufacturing Co ltd
Current assignee: Taicang Hongtian Fastener Manufacturing Co ltd
Priority date: 2022-09-03
Filing date: 2022-09-03
Publication date: 2023-02-24
Anticipated expiration: 2032-09-03

Abstract

The application relates to the field of screw production, in particular to a screw cold header, which comprises an installation table, wherein the installation table is provided with an installation frame and a lower die holder positioned below the installation frame, and the lower die holder is provided with a plurality of step blind holes uniformly distributed along the circumferential direction of the lower die holder; a guide rod is fixed on the mounting table, a sliding piece is connected onto the guide rod in a sliding manner, the sliding piece is rotatably connected with an upper abutting plate, and upper abutting heads which correspond to the step blind holes one to one are fixed on the upper abutting plate; and the mounting frame is fixedly provided with a telescopic piece which can be abutted against the upper abutting plate. This application has the effect of being convenient for promote with metalwork cold heading screw blank efficiency.

Description

Screw cold heading machine

Technical Field

The application relates to the field of screw production, especially relates to a screw cold heading machine.

Background

The cold heading process is one of the novel processes for machining less and no cutting metal under pressure. The method is a processing method which utilizes the plastic deformation generated by metal under the action of external force and redistributes and transfers the volume of the metal by means of a die so as to form the required part or blank.

At present, metal parts are generally processed into screw blanks for manufacturing screws in a cold heading mode; and when the metal piece is processed, a plurality of different cold heading processes are required to be adopted to carry out cold heading on the metal piece, so that the metal piece forms a screw blank.

In the process of implementing the present application, it is found that the above technology has at least the following problems: when carrying out the cold-heading to the metalwork, need transport the metalwork in different cold-heading technology station departments through the manual work, so it is thus seen that the efficiency of using prior art to become the screw blank with the metalwork cold-heading is lower.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the promotion with the efficiency of metalwork cold-heading into screw blank, this application provides a screw cold heading machine.

The application provides a screw cold heading machine adopts following technical scheme:

a screw cold header comprises a mounting table, wherein the mounting table is provided with a mounting rack and a lower die holder positioned below the mounting rack, and the lower die holder is provided with a plurality of stepped blind holes uniformly distributed along the circumferential direction of the lower die holder; a guide rod is fixed on the mounting table, a sliding piece is connected onto the guide rod in a sliding manner, the sliding piece is rotatably connected with an upper abutting plate, and upper abutting heads which correspond to the step blind holes one to one are fixed on the upper abutting plate; and the mounting frame is fixedly provided with a telescopic piece which can be abutted against the upper abutting plate.

By adopting the technical scheme, the metal piece is placed in the step blind hole in the lower die base, and then the telescopic piece drives the upper abutting plate to move towards the lower die base, so that the upper abutting head on the upper abutting plate can abut against the metal piece, and the metal piece is abutted against the preset shape; when the next cold heading process is carried out, the upper abutting plate is rotated, the metal piece does not need to be moved to the next station again in a manual mode, and therefore the efficiency of cold heading the metal piece into the screw blank is improved conveniently.

In a specific embodiment, the installation table is provided with a rubber pad connected with the ground.

Through adopting above-mentioned technical scheme, be convenient for absorb the vibrations of cold heading machine during operation through the rubber pad to be convenient for reduce vibrations and to the damage of cold heading machine.

In a specific possible embodiment, a return spring is provided on the mounting table, and the return spring is further connected to the sliding member.

Through adopting above-mentioned technical scheme, be convenient for when accomplishing a cold-heading technology through reset spring, support the board through elasticity messenger and reset.

In a specific possible implementation scheme, a mounting ring is arranged on the sliding part, a motor is arranged on the mounting ring, and a driving gear is arranged on an output shaft of the motor; and the upper butting plate is provided with a gear ring meshed with the driving gear.

Through adopting above-mentioned technical scheme, be convenient for drive through the motor and go up the offset and rotate, promoted the efficiency of rotating the upper offset.

In a specific possible embodiment, the stop rod is provided with a disengagement preventing member capable of abutting against the sliding member, and the disengagement preventing member is used for preventing the sliding member from disengaging from the stop rod.

Through adopting above-mentioned technical scheme, just prevent that the slider from breaking away from the gag lever post through anticreep spare.

In a specific possible embodiment, a fixing ring is connected to the lower die holder, the fixing ring surrounds the lower die holder, and the lower die holder is fixed on the mounting table through screws.

Through adopting above-mentioned technical scheme, be convenient for prevent that the die holder from moving on the mount table through solid fixed ring and screw to be convenient for promote the stability of cold-heading operation.

In a particular possible embodiment, the mounting table is square-table shaped.

Through adopting above-mentioned technical scheme, set the mount table to square platform shape, be convenient for with butt power homodisperse to ground.

In a specific possible embodiment, an abutting piece capable of abutting against the upper abutting plate is fixed on the telescopic piece, and the abutting piece is in a circular truncated cone shape.

By adopting the technical scheme, the abutting part is arranged to be in the shape of a circular truncated cone, so that the abutting force generated by the telescopic part is uniformly dispersed to the upper abutting plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. placing a metal piece in the step blind hole in the lower die base, and then driving the upper abutting plate to move towards the lower die base through the telescopic piece, so that an upper abutting head on the upper abutting plate can abut against the metal piece, and the metal piece is abutted against the preset shape; when the next cold heading process is carried out, the upper abutting plate is rotated, the metal piece does not need to be moved to the next station in a manual mode, and therefore the efficiency of cold heading the metal piece into the screw blank is improved conveniently;

2. the return spring is convenient for returning the upper support plate through elastic force when a cold heading process is finished;

3. the lower die holder is convenient to prevent from moving on the mounting table through the fixing rings and the screws, so that the stability of cold heading operation is convenient to promote.

Drawings

Fig. 1 is a schematic view of the overall structure of a screw cold header in the embodiment of the present application.

Fig. 2 is a schematic structural diagram of an under-limiting structure in an embodiment of the present application.

Fig. 3 is a schematic structural diagram for showing a connection relationship between the bottom limiting structure and the guide assembly in the embodiment of the present application.

Fig. 4 is a schematic structural diagram for showing a connection relationship between the upper abutting plate and the upper abutting head in the embodiment of the present application.

Fig. 5 is a schematic diagram for embodying an abutting head structure in the embodiment of the present application.

Fig. 6 is a schematic structural diagram for showing a connection relationship between the force application structure and the upper butt plate in the embodiment of the present application.

Fig. 7 is a schematic structural diagram for showing a connection relationship between the driving structure and the upper supporting plate in the embodiment of the present application.

Description of the reference numerals: 1. a bottom limiting structure; 11. a rubber pad; 12. an installation table; 13. a lower die holder; 131. step blind holes; 1311. a cylindrical blind hole; 1312. a screw head groove; 14. a fixing ring; 15. a screw; 2. a guide assembly; 21. a guide rod; 22. a drop-preventing member; 23. a slider; 24. a return spring; 25. a bearing; 3. an upper support component; 31. an upper resisting plate; 32. supporting the head upwards; 321. a first upper abutment; 322. a second upper abutment; 323. a third upper abutment; 3231. a first butt head body; 3232. a hemisphere; 324. a fourth upper abutting head; 3241. a second butt head body; 3242. a hexagonal piece; 4. a force application structure; 41. a mounting frame; 411. a support pillar; 412. mounting a plate; 42. a telescoping member; 43. an abutting member; 5. a driving structure; 51. a mounting ring; 52. a motor; 53. a drive gear; 54. and (4) a toothed ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses screw cold heading machine. Referring to fig. 1, the screw cold header comprises a bottom limiting structure 1, wherein the bottom limiting structure 1 is used for containing and limiting cylindrical metal pieces; a guide assembly 2 is fixed on the bottom limiting structure 1, an upper supporting assembly 3 capable of sliding along the vertical direction is rotatably connected to the guide assembly 2, a force application structure 4 is arranged on the bottom limiting structure 1, and the force application structure 4 is used for driving the upper supporting assembly 3 to move towards the bottom limiting structure 1; and a driving and rotating structure 5 for driving the upper supporting component 3 to rotate is arranged on the guide component 2.

Referring to fig. 2, the bottom limiting structure 1 comprises a rubber pad 11 mounted on a bottom surface, and a mounting table 12 in a square table shape is fixed on a top wall of the rubber pad 11; a cylindrical lower die base 13 is arranged on the top wall of the mounting table 12, a fixing ring 14 surrounding the lower die base 13 is fixed on the lower die base 13, a plurality of screws 15 in threaded connection with the mounting table 12 are uniformly arranged on the fixing ring 14 along the circumferential direction of the fixing ring, and the screws 15 are used for fixing the fixing ring 14 and the lower die base 13 on the mounting table 12; four stepped blind holes 131 are uniformly formed in the top wall of the mounting table 12 along the circumferential direction of the top wall, each stepped blind hole 131 comprises a cylindrical blind hole 1311 located at the bottom and a screw head groove 1312 located above the cylindrical blind hole 1311 and coaxial with the cylindrical blind hole 1311, and it should be noted that the diameter of the screw head groove 1312 is larger than that of the cylindrical blind hole 1311.

In implementation, a metal piece may be placed in the stepped blind hole 131, at which time the bottom wall of the metal piece abuts against the bottom wall of the cylindrical blind hole 1311; the side wall of the metal piece abuts against the cylindrical blind hole 1311, but does not abut against the side wall of the screw head groove 1312; the top end of the metal piece extends upwards out of the step blind hole 131.

Referring to fig. 3, the guide assembly 2 includes four guide rods 21 uniformly surrounding the lower die holder 13 and arranged in a vertical direction, the bottom ends of the guide rods 21 are fixed on the bottom wall of the mounting table 12, the top ends of the guide rods 21 are fixed with anti-falling pieces 22 in a circular cake shape, and the diameters of the anti-falling pieces 22 are larger than the diameters of the guide rods 21; each guide rod 21 is connected with a sliding piece 23 in a sliding mode, each sliding piece 23 is provided with a return spring 24 in a surrounding mode, the bottom end of each return spring 24 is connected with the top wall of the installation table 12, and the top end of each return spring is connected with the bottom wall of each sliding piece 23; a bearing 25 is commonly connected to the four sliders 23, the axial direction of the bearing 25 is arranged in the vertical direction, and the outer ring of the bearing 25 is connected to the four sliders 23.

Referring to fig. 3, the upper abutting assembly 3 includes an upper abutting plate 31 coaxially disposed with the bearing 25 and fixed on the inner ring of the bearing 25, and referring to fig. 4, four upper abutting heads 32 uniformly distributed along the circumferential direction of the upper abutting plate 31 are fixed on the bottom wall of the upper abutting plate 31, and the four upper abutting heads 32 are in one-to-one correspondence with the four stepped blind holes 131; the four upper contact heads 32 have the same shape, and the four upper contact heads 32 are referred to as a first upper contact head 321, a second upper contact head 322, a third upper contact head 323, and a fourth upper contact head 324 in the clockwise direction in the figure.

Referring to fig. 5, the first upper abutting head 321 is cylindrical, and an upper blind hole is formed on the bottom wall of the first upper abutting head 321, and with reference to fig. 1, the diameter of the upper blind hole is consistent with the diameter of the screw head groove 1312; the second upper abutment 322 is cylindrical, and the diameter of the second upper abutment 322 is slightly larger than that of the screw head groove 1312; the third upper abutment 323 comprises a first abutment body 3231 which is consistent with the second upper abutment 322 in structure and size, and a hemisphere 3232 integrally formed on the bottom wall of the abutment body; the fourth upper abutment 324 includes a second abutment body 3241 having the same size as the second upper abutment 322, and a hexagonal element 3242 is integrally formed on a bottom wall of the second abutment body 3241, and in an initial condition, the abutment heads are coaxial with the corresponding stepped blind holes 131.

Referring to fig. 6, the force application structure 4 is a mounting frame 41 mounted on the mounting table 12, specifically, the mounting frame 41 includes four support columns 411 fixed on the top wall of the mounting table 12 along the vertical direction, the top ends of the four support columns 411 are connected with a mounting plate 412 together, and a telescopic member 42 capable of extending vertically and downwardly is fixed on the bottom wall of the mounting plate 412; in the present embodiment, the telescopic member 42 includes but is not limited to an air cylinder, the bottom end of the telescopic member 42 is fixed with an abutting member 43 in a circular truncated cone shape, and the bottom wall of the abutting member 43 can abut against the top wall of the upper abutting plate 31 under the driving of the telescopic member 42.

Referring to fig. 7, the driving structure 5 includes a mounting ring 51 connected to the four sliding members 23, the mounting ring 51 is coaxially disposed with the telescopic member 42 and the abutting member 43, and the telescopic member 42 downwardly passes through the mounting ring 51; a motor 52 is fixed on the top wall of the mounting ring 51, an output shaft of the motor 52 vertically and downwards penetrates through the mounting ring 51, and a driving gear 53 is coaxially fixed at the bottom end of the output shaft of the motor 52; a toothed ring 54 is coaxially fixed to the top wall of the upper abutting plate 31, and the toothed ring 54 is engaged with the driving main wheel.

The implementation principle of the screw cold heading machine in the embodiment of the application is as follows: firstly, placing a metal piece in a step blind hole 131 initially corresponding to a first upper abutting head 321; then, the upper abutting plate 31 is driven to move downwards by the telescopic piece 42, so that the first upper abutting head 321 abuts against the top end of the metal piece, the first cold heading process of the metal gold is performed, and at the moment, the return spring 24 is compressed; after the first cold heading process is finished, controlling the telescopic piece 42 to contract upwards to drive the upper abutting plate 31 to move upwards, and then gradually resetting the return spring 24 and simultaneously driving the upper abutting plate 31 to reset;

then, the motor 52 drives the upper abutting plate 31 to rotate, so that the metal piece which completes the first cold heading process is coaxial with the second upper abutting head 322, and meanwhile, a new metal piece is put into the stepped blind hole 131 which is coaxial with the first upper abutting head 321; then, the telescopic member 42 is extended downwards, so that the second upper abutting head 322 abuts against the top end of the metal member completing the first cold heading process, and the first upper abutting head 321 also abuts against the top end of the new metal member, so that the first metal member completes the second cold heading process and the second metal member completes the first cold heading process;

by analogy, the first metal piece is subjected to a third cold heading process, the second metal piece is subjected to a second cold heading process, and the third metal piece is subjected to a first cold heading process;

according to the mode, the metal piece sequentially completes four cold heading processes, and the technical scheme is adopted to avoid transferring the metal piece at stations of different cold heading processes through manual work, so that the efficiency of cold heading the metal piece into a screw blank is improved conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a screw cold heading machine which characterized in that: the die comprises a mounting table (12), wherein the mounting table (12) is provided with a mounting frame (41) and a lower die holder (13) positioned below the mounting frame (41), and the lower die holder (13) is provided with a plurality of step blind holes (131) uniformly distributed along the circumferential direction of the lower die holder (13); a guide rod (21) is fixed on the mounting table (12), a sliding part (23) is connected onto the guide rod (21) in a sliding manner, an upper abutting plate (31) is connected onto the sliding part (23) in a rotating manner, and upper abutting heads (32) which correspond to the step blind holes (131) one by one are fixed on the upper abutting plate (31); and a telescopic piece (42) capable of abutting against the upper abutting plate (31) is fixed on the mounting frame (41).

2. The screw cold heading machine of claim 1, wherein: and a rubber pad (11) connected with the ground is arranged on the mounting table (12).

3. The screw cold heading machine of claim 1, wherein: and a return spring (24) is arranged on the mounting table (12), and the return spring (24) is also connected with the sliding piece (23).

4. The screw cold heading machine of claim 1, wherein: a mounting ring (51) is arranged on the sliding part (23), a motor (52) is arranged on the mounting ring (51), and a driving gear (53) is arranged on an output shaft of the motor (52); the upper abutting plate (31) is provided with a gear ring (54) meshed with the driving gear (53).

5. The screw cold heading machine of claim 3, wherein: the guide rod (21) is provided with a separation preventing piece (22) which can be abutted against the sliding piece (23), and the separation preventing piece (22) is used for preventing the sliding piece (23) from separating from the guide rod (21).

6. The screw cold heading machine of claim 1, wherein: the die holder is characterized in that a fixing ring (14) is connected to the lower die holder (13), the fixing ring (14) surrounds the lower die holder (13), and the lower die holder (13) is fixed to the mounting table (12) through a screw (15).

7. The screw cold heading machine of claim 1, wherein: the mounting table (12) is square table-shaped.

8. The screw cold heading machine of claim 1, wherein: an abutting part (43) capable of abutting against the upper abutting plate (31) is fixed on the telescopic part (42), and the abutting part (43) is in a circular truncated cone shape.