CN217451965U

CN217451965U - Forming device for manufacturing head of bolt

Info

Publication number: CN217451965U
Application number: CN202122911360.5U
Authority: CN
Inventors: 孙团结; 杨光文; 文晓刚; 孙振兴; 李凯龙; 郭建家
Original assignee: Fujian Jinjiang Lijing Automotive Fittings Co ltd
Current assignee: Fujian Jinjiang Lijing Automotive Fittings Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-09-20
Anticipated expiration: 2031-11-25

Abstract

An embodiment of the utility model provides a forming device for making head of bolt, include: the base is provided with an adjusting hole which extends along the length direction of the base and penetrates through the thickness of the base; the sliding seat is movably arranged on the base relative to the base in the length direction, and a first accommodating hole communicated with the adjusting hole is formed in the sliding seat; and the forming part is at least partially arranged in the first accommodating hole and the adjusting hole in a penetrating way. Through the adjusting hole that sets up the length direction extension of following the base on the base and run through its thickness to set up the slide on the adjusting hole of base and will be used for the shaping portion of the head of bolt to wear to locate in the adjusting hole of slide and base partially, make forming device can be when the head shaping is ended, carry out the displacement along the length direction of adjusting hole, so that forming device can misplace rather than the push down device directly over, thereby do not receive the difference in height restriction between push down device and the forming device, finally realize the shaping of the head of overlength straight-bar bolt.

Description

Forming device for manufacturing head of bolt

Technical Field

The embodiment of the utility model provides a device of preparation bolt especially relates to a forming device that is used for adopting the head of pier nose technology preparation bolt.

Background

Straight-bar bolts used for heavy trucks, mine car chassis, working vehicles, high-speed rails, trains and other large mechanical equipment in the market are mostly double-headed straight-bar bolts due to long length, and nuts are welded at one end of the double-headed straight-bar bolts. In the mode, the straight rod bolt and the nut are assembled and then welded, the welding process has high requirements on the quality of the interface, and welding slag needs to be cleaned and welding spots need to be polished after welding. And the welding machine process is dangerous, and the gas cylinder needs to be stored and used strictly according to safe operating procedures.

The processing process is complicated, the efficiency is low, and the welded nut has the risk of falling off in the assembling and using processes.

The head of the bolt is generally manufactured by adopting a pier head process for the same type of shorter straight-bar bolt, and the pier head process has the advantages of material saving, high efficiency, high strength and the like. But the overlong straight rod bolt cannot be put into a die and cannot be processed due to the limit of the stroke of the press.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a forming device for manufacturing a head of a bolt.

The embodiment of the utility model provides a forming device for head of bolt, include:

a base having an adjustment hole extending along a longitudinal direction of the base and penetrating through a thickness of the base;

a slide base movably mounted on the base in the longitudinal direction with respect to the base, the slide base having a first receiving hole therein communicating with the adjustment hole; and

and the forming part is at least partially arranged in the first accommodating hole and the adjusting hole in a penetrating manner and is used for placing a bar stock for preparing the bolt and forming the head of the bolt.

According to the utility model discloses an embodiment is equipped with the guiding groove on one in above-mentioned base and the above-mentioned slide, and above-mentioned alignment hole forms the tank bottom in above-mentioned guiding groove, is equipped with on the other in above-mentioned base and the above-mentioned slide with above-mentioned guiding groove complex guide arch.

According to the embodiment of the present invention, two vertical walls extending along the length direction are provided on both sides of the base, each of the vertical walls is provided with a pressing plate, and the width of the pressing plate is greater than the width of the vertical wall, so as to form the guide groove inside the vertical wall;

the guide projection is formed on the slider.

According to the utility model discloses an embodiment, install the baffle in the outside of every above-mentioned upright wall and clamp plate.

According to the utility model discloses a part that above-mentioned clamp plate is located above-mentioned guiding groove is equipped with at least one first oil filler point to pour into lubricating oil into between above-mentioned clamp plate and above-mentioned slide.

According to the embodiment of the present invention, the pressing plate is further provided with a first fixing hole for fixing with the vertical wall; and

the baffle plate and the pressure plate are connected with the vertical wall through threads.

According to the embodiment of the present invention, the guiding protrusion is provided with a plurality of second oil holes connecting the upper surface of the guiding protrusion and the outer wall of the guiding protrusion connected to the vertical wall, so as to inject the lubricating oil into the outer wall; and

wherein, the second oil filler hole comprises an input port arranged on the upper surface of the guide bulge and an output port arranged on the outer wall.

According to an embodiment of the present invention, the first oil hole communicates with the input port of the second oil hole; and

wherein, the number of the first oil holes is the same as that of the second oil holes.

According to the utility model discloses an embodiment is equipped with the oil groove with the above-mentioned delivery outlet intercommunication of above-mentioned second oil filler point on the bellied above-mentioned outer wall of above-mentioned guide to the lubricating oil homodisperse that will flow in to above-mentioned outer wall through above-mentioned second oil filler point.

According to the embodiment of the present invention, the first accommodating hole in the sliding seat is stepped, and includes a first inner hole and a second inner hole in sequence from top to bottom;

wherein the diameter of the first bore is greater than the diameter of the second bore; and

wherein, the outer diameter of the second inner hole is not larger than the inner diameter of the adjusting hole.

According to the utility model discloses an embodiment, above-mentioned shaping portion includes:

a first cylindrical part, which is internally provided with a through second containing hole and is penetrated through the first containing hole and the adjusting hole;

a second cylindrical portion having a third through-hole formed therein, the second cylindrical portion being provided on the slider and the first cylindrical portion;

a forming block having a fourth receiving hole formed therein and extending through the forming block in a thickness direction thereof, the forming block being disposed in the third receiving hole of the second cylindrical portion and on the first cylindrical portion; and

wherein the second accommodating hole, the third accommodating hole, and the fourth accommodating hole are concentric with the first accommodating hole.

According to the utility model discloses an embodiment is equipped with the first flange of outside extension on the outer wall of above-mentioned first cylindrical portion upper end, and above-mentioned flange is hung and is located the platform in the first holding hole of above-mentioned of step type.

According to an embodiment of the present invention, the diameter of the outer edge of the first flange is larger than the diameter of the second inner hole and smaller than the diameter of the first inner hole; and

the thickness of the first flange is smaller than the height of the first inner hole.

According to the utility model discloses an embodiment, above-mentioned second holding hole includes the third hole and sets up the fourth hole under above-mentioned third hole, and the diameter of above-mentioned third hole is greater than the diameter of above-mentioned fourth hole.

According to the utility model discloses an embodiment, be equipped with the second flange that outwards extends on the outer wall that is close to the lower extreme of above-mentioned second cylindric portion for be connected with above-mentioned slide.

According to an embodiment of the present invention, a diameter of the outer wall of the second flange to the lower end of the second cylindrical portion is smaller than a diameter of the first inner hole.

According to the utility model discloses an embodiment, the upper end of above-mentioned shaping piece is equipped with the circular shape boss, and the diameter in above-mentioned fourth holding hole is less than the diameter in above-mentioned second holding hole.

According to the utility model discloses an embodiment, above-mentioned shaping portion still includes the cushion, is equipped with the fifth holding hole in, and above-mentioned cushion sets up between above-mentioned shaping piece and above-mentioned first section of thick bamboo portion.

According to an embodiment of the present invention, the diameter of the fifth accommodating hole is the same as and concentric with the diameter of the fourth accommodating hole.

According to the utility model discloses an embodiment, above-mentioned shaping portion still includes the apron, is equipped with sixth holding hole in, with the upper surface swing joint of above-mentioned second cylindric portion.

According to the utility model discloses an embodiment, the slide does not the bellied both ends of guide are provided with push-and-pull device, are used for making the slide is followed the direction in adjustment hole carries out the displacement.

According to the utility model discloses a forming device, through the length direction extension of setting up along the base on the base and run through the adjustment hole of its thickness, and set up the slide on the adjustment hole of base and partially wear to locate in the adjustment hole of slide and base with the shaping portion that will be used for the head of bolt, make forming device can begin at the head shaping with when finishing, carry out the displacement along the length direction of adjustment hole, so that forming device can misplace rather than the push-down device directly over, thereby do not receive the difference in height restriction between push-down device and the forming device, finally realize the shaping of the head of overlength straight-bar bolt.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 schematically shows a schematic perspective view of a forming device for making a head of a bolt according to an embodiment of the invention;

FIG. 2 schematically illustrates a top view of the forming apparatus of FIG. 1 for making a head of a bolt;

FIG. 3 is a schematic sectional view of the molding device for producing a head of a bolt in FIG. 1, taken along the width direction of an adjustment hole;

FIG. 4 is a schematic cross-sectional view of the forming device for forming the head of the bolt of FIG. 1 along the length of the adjustment hole;

fig. 5 schematically shows a top view and a schematic cross-sectional view of a base according to an embodiment of the invention;

figure 6 schematically shows a top view and a schematic cross-sectional view of a platen according to an embodiment of the invention;

figure 7 schematically shows a top view and a schematic cross-sectional view of a baffle according to an embodiment of the invention;

figure 8 schematically shows a cross-sectional view of a carriage according to an embodiment of the invention in the width direction;

figure 9 schematically shows a cross-sectional view of a carriage according to an embodiment of the invention in the length direction;

figure 10 schematically illustrates a schematic top view of a carriage according to an embodiment of the invention;

figure 11 schematically shows a schematic cross-sectional view of a profiled section according to an embodiment of the invention in the axial direction;

fig. 12 schematically shows a schematic cross-sectional view of the first cylindrical portion in the axial direction according to an embodiment of the present invention;

fig. 13 schematically shows a schematic cross-sectional view of the second cylindrical portion in the axial direction according to an embodiment of the present invention;

fig. 14 schematically shows a schematic top view of a second cylindrical portion according to an embodiment of the invention;

figure 15 schematically shows a schematic cross-sectional view of a forming block according to an embodiment of the invention in the axial direction;

figure 16 schematically illustrates a schematic cross-sectional view in the axial direction of a spacer block according to an embodiment of the invention; and

fig. 17 schematically shows a top view and a schematic cross-sectional view in axial direction of a cover plate according to an embodiment of the invention.

In the above drawings, the specific meanings of the reference numerals are as follows:

1. a base;

11. an adjustment hole;

12. a guide groove;

121. the bottom of the tank;

122. erecting a wall;

21. pressing a plate;

211. a first oil filler hole;

212. a first fixing hole;

213. a second fixing hole;

22. a baffle plate;

221. a third fixing hole;

222. a fourth fixing hole;

3. a slide base;

31. a first housing hole;

311. a first inner bore;

312. a second inner bore;

32. a guide projection;

321. a second oil filler hole;

3211. an input port;

3212. an output port;

322. an oil sump;

4. a molding section;

41. a first cylindrical portion;

411. a second housing hole;

4111. a third inner bore;

4112. a fourth inner bore;

412. a first flange;

42. a second cylindrical portion;

421. a third housing hole;

422. a second flange;

43. forming a block;

431. a fourth housing hole;

432. a boss;

44. cushion blocks;

441. a fifth accommodating hole;

45. a cover plate; and

451. a sixth containing hole.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

According to the utility model discloses in general the design, the embodiment of the utility model provides a forming device for making the head of bolt, include:

the base is provided with an adjusting hole which extends along the length direction of the base and penetrates through the thickness of the base;

the sliding seat is movably arranged on the base relative to the base in the length direction, and a first accommodating hole communicated with the adjusting hole is formed in the sliding seat; and

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not restrictive thereof, and that various features described in the embodiments may be combined to form multiple alternatives. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 schematically shows a perspective view of a forming device for manufacturing a head of a bolt according to an embodiment of the present invention. Fig. 2 schematically shows a top view of the molding device of fig. 1 for producing the head of a screw.

Referring to fig. 1 and 2, a forming device for manufacturing a head of a bolt according to an embodiment of the present invention may include a base 1, a slide 3, and a forming portion 4.

The base 1 is formed with an adjustment hole 11 extending in the longitudinal direction of the base 1 and penetrating the thickness of the base 1. The carriage 3 is mounted on the base 1 movably in the longitudinal direction with respect to the base 1, and a first receiving hole 31 communicating with the adjustment hole 11 is provided in the carriage 3. The forming part 4 is at least partially arranged in the first containing hole 31 and the adjusting hole 11 in a penetrating way and is used for placing bar stock for preparing the bolt and forming the head of the bolt.

According to the utility model discloses an embodiment, refer to fig. 1 and fig. 2, the utility model discloses a forming device for making head of bolt, its simple structure can obtain through simple design transformation on forming device among the prior art to need not carry out holistic redesign to forming device, also removed from just enough to new equipment, saved the cost expenditure.

According to the utility model discloses an embodiment, because only need can obtain through the design transformation on prior art's equipment the utility model discloses a forming device, consequently, it is also very convenient that the operation gets up, need not carry out special training to the use of new equipment, has practiced thrift the training cost, has shortened forming device and has trained earlier stage to the time of formally producing, has improved work efficiency.

According to the embodiment of the utility model, by arranging the adjusting hole 11 on the base 1, which extends along the length direction of the base 1 and penetrates through the thickness of the base, a slide seat 3 is arranged on an adjusting hole 11 of a base 1, a molding part 4 for molding the head of the bolt is partially penetrated in the slide seat 3 and the adjusting hole 11 of the base 1, so that the forming device can displace along the length direction of the adjusting hole when the head forming is started and finished, so that the forming part of the forming device can be vertically staggered with the pressing device right above the forming part, so that the bar stock for manufacturing the overlong straight-bar bolt is inserted into the forming part without being hindered by the pressing device without being limited by the height difference between the pressing device and the forming device, and the overlong straight rod bolt with the head part manufactured by the pier head process is taken out from the molding part without being hindered by a pressing device, and finally the molding of the head part of the overlong straight rod bolt is realized.

Fig. 5 schematically shows a top view and a schematic cross-sectional view of a base according to an embodiment of the invention.

According to the embodiment of the present invention, referring to fig. 1 and 5, one of the base 1 and the slide base 3 is provided with the guide groove 12, the adjustment hole 11 is formed in the groove bottom 121 of the guide groove 12, and the other of the base 1 and the slide base 3 is provided with the guide protrusion 32 engaged with the guide groove 12.

Fig. 3 schematically shows a cross-sectional view of the molding device for making a head portion of a bolt in fig. 1 in the width direction of an adjustment hole. Fig. 6 schematically shows a top view and a schematic cross-sectional view of a press plate according to an embodiment of the invention.

According to the embodiment of the present invention, referring to fig. 3 and 6, two vertical walls 122 extending along the length direction are provided on both sides of the base 1, a pressing plate 21 is provided on each vertical wall 122, the width of the pressing plate 21 is greater than the width of the vertical wall 122, so that the guide groove 12 is formed on the inner side of the vertical wall 122, and the guide protrusion 32 is formed on the slider 3. In an alternative embodiment, the guide slot is integrally formed in the upright wall.

Fig. 7 schematically shows a top view and a schematic cross-sectional view of a baffle according to an embodiment of the invention.

According to an embodiment of the present invention, referring to fig. 3 and 7, a baffle 22 is installed at an outer side of each of the upright wall 122 and the pressing plate 21.

According to the embodiment of the present invention, referring to fig. 3 and 6, the sliding base 3 is disposed in the guiding groove 12, the pressing plate 21 is disposed on two vertical walls 122 of the guiding groove 12, and the portion of the pressing plate 21 protruding relative to the vertical wall 122, the vertical walls 122 and the groove bottom 121 together form a sliding groove capable of accommodating the guiding protrusions 32 at the two ends of the sliding base 3 and sliding along the push-pull sliding direction of the forming portion 4.

According to the utility model discloses an embodiment, under the effect of clamp plate 21, can effectively restrict the orbit of the protruding 32 of guide at slide 3 both ends, make slide 3 can slide only along the push-and-pull direction of shaping portion 4 under the effect of spout and guiding groove 12, prevent that it from producing spring or lateral sliding when the slip in the actual production process, guaranteed the gliding stability of shaping portion 4 and then ensured forming device's production stability.

According to the embodiment of the present invention, the pressing plate 21 is further provided with a first fixing hole 212 for fixing with the vertical wall 122, and the baffle 22 and the pressing plate 21 are connected with the vertical wall 122 through threads.

According to an embodiment of the present invention, referring to fig. 1, 5, 6 and 7, the pressing plate 21 is fixed to the upper surface of the vertical wall 122 by bolting in the first fixing hole 212 and the second fixing hole 213. The baffle plate 22 is additionally arranged on the side wall of the pressure plate 21 and the side wall of the base 1, and the baffle plate 22, the base 1 and the pressure plate 21 are detachably fixed in the third fixing hole 221 and the fourth fixing hole 222 through threaded connection.

According to the utility model discloses an embodiment installs the stability of the spout that the baffle 22 can further stabilize clamp plate 21, founds wall 122 and the tank bottom 121 formation of guiding groove 12 additional, prevents that shaping portion 4 from producing the ascending slip or the displacement of spring or other orientations in the slip in-process.

According to an embodiment of the present invention, referring to fig. 2 and 6, the portion of the pressure plate 21 located in the guide groove 12 is provided with at least one first oil hole 211 for injecting lubricating oil between the pressure plate 21 and the slider 3.

Fig. 8 schematically shows a schematic cross-sectional view of a carriage according to an embodiment of the invention in the width direction. Figure 9 schematically shows a schematic cross-sectional view of a carriage according to an embodiment of the invention in the length direction. Figure 10 schematically shows a schematic top view of a sledge according to an embodiment of the invention.

According to the embodiment of the present invention, referring to fig. 8 and 9, the guide protrusion 32 is provided with a plurality of second oil holes 321 connecting the upper surface of the guide protrusion 32 and the outer wall of the guide protrusion 32 connected to the vertical wall 122, so as to inject the lubricating oil into the outer wall. The second oil filler hole 321 may include an input port 3211 provided to an upper surface of the guide protrusion 32 and an output port 3212 provided to an outer wall.

According to the utility model discloses an embodiment, first oil filler point 211 communicates with the input port 3211 of second oil filler point 321, and the quantity of first oil filler point 211 is the same with the quantity of second oil filler point 321.

According to the embodiment of the present invention, referring to fig. 9 and 10, the oil groove 322 communicating with the output port 3212 of the second oil hole 321 is provided on the outer wall of the guide protrusion 32, so as to uniformly disperse the lubricating oil flowing into the outer wall through the second oil hole 321.

According to the embodiment of the utility model, refer to fig. 8, fig. 9, in actual production application, when the guide protrusion 32 of slide 3 followed the slip of guiding groove 12 and spout, can be continuous with the lower surface of founding wall 122 and clamp plate 21 and tank bottom 121 carry out sliding friction in addition, if not lubricated to its contact surface, will shorten base 1 greatly, the wearing and tearing of major component such as slide 3 to increase forming device's wearing and tearing, finally shorten forming device's life, improved manufacturing cost.

Therefore, it is necessary to effectively lubricate the slider 3, the groove bottom 121 and the upright wall 122 of the guide groove 12, and the pressing plate 21. By providing the first oil holes 211 and the second oil holes 321 on the presser plate 21 and the guide projections 32 of the slider 3, respectively, it is possible to inject the lubricating oil between the lower surface of the presser plate 21 and the upper surfaces of the guide projections 32 through the first oil holes 211 on the presser plate 21 and lubricate them. However, if it is desired to lubricate the contact surface between the guide protrusion 32 and the standing wall 122, it is necessary to provide the second oil hole 321 in the guide protrusion 32, and the second oil hole 321 can transfer the lubricating oil injected from the first oil hole 211 from the input port 3211 in the upper surface of the guide protrusion 32 to the output port 3212 in the side surface of the guide protrusion 32 that contacts the standing wall 122, so that the contact surface between the guide protrusion 32 and the standing wall 122 is lubricated.

According to the embodiment of the present invention, referring to fig. 9 and 10, in order to make the lubricant oil delivered to the contact surface of the guide protrusion 32 and the upright wall 122 uniformly disperse, it is necessary to provide an oil groove 322 on the side surface of the guide protrusion 32 to more uniformly disperse the lubricant oil on the contact surface between them, and finally to achieve a better lubrication effect.

Fig. 4 schematically shows a cross-sectional view of the forming device for making a head of a bolt in fig. 1 along the length direction of an adjustment hole.

According to the embodiment of the present invention, referring to fig. 3, 4 and 8, the first accommodating hole 31 in the sliding seat 3 is of a step shape, and may include a first inner hole 311 and a second inner hole 312 from top to bottom in sequence. The diameter of the first bore 311 is larger than the diameter of the second bore 312, and the outer diameter of the second bore 312 is not larger than the inner diameter of the adjustment hole.

Fig. 11 schematically shows a schematic cross-sectional view of a profiled section according to an embodiment of the invention in the axial direction. Fig. 12 schematically shows a schematic cross-sectional view of the first cylindrical portion in the axial direction according to an embodiment of the present invention. Fig. 13 schematically shows a schematic cross-sectional view of the second cylindrical portion in the axial direction according to an embodiment of the present invention. Fig. 15 schematically shows a schematic cross-sectional view of a forming block according to an embodiment of the invention in the axial direction.

According to an embodiment of the present invention, referring to fig. 11, 12, 13 and 15, the forming portion 4 may include a first cylindrical portion 41, a second cylindrical portion 42, a forming block 43. The first cylindrical portion 41 is provided with a through second receiving hole 411 therein, and the first cylindrical portion 41 is disposed through the first receiving hole 31 and the adjusting hole. A third accommodation hole 421 is provided in the second cylindrical portion 42, and the second cylindrical portion 42 is provided in the slider 3 and the first cylindrical portion 41. The forming block 43 is provided with a fourth accommodation hole 431 penetrating the forming block 43 in the thickness direction, and is provided in the third accommodation hole 421 of the second cylindrical portion 42 and on the first cylindrical portion 41. The second receiving hole 411, the third receiving hole 421 and the fourth receiving hole 431 are concentric with the first receiving hole 31.

According to an embodiment of the present invention, referring to fig. 11, the formed bar for preparing the head of the bolt passes through the fourth containing hole 431, the third containing hole 421, the second containing hole 411 in sequence, and finally passes through the forming portion 4.

According to the embodiment of the present invention, referring to fig. 11 and 12, the outer wall of the upper end of the first cylindrical portion 41 is provided with a first flange 412 extending outwards, and the flange is hung on the platform of the stepped first accommodating hole 31.

According to an embodiment of the present invention, the diameter of the outer edge of the first flange 412 is larger than the diameter of the second bore 312 and smaller than the diameter of the first bore 311. The thickness of the first flange 412 is less than the height of the first bore 311.

According to an embodiment of the present invention, referring to fig. 11, 13 and 14, the outer wall of the second cylindrical portion 42 near the lower end is provided with a second flange 422 extending outwardly for connection with the slide 3.

According to an embodiment of the present invention, referring to fig. 11, the diameter of the outer wall at the lower end of the second flange 422 to the second cylindrical portion 42 is smaller than the diameter of the first inner hole 311.

According to the embodiment of the present invention, referring to fig. 11, the first cylindrical portion 41 is movably connected to the sliding base 3, and it is mainly by setting the first flange 412 on the upper end of the first cylindrical portion 41, and the lower surface of the first flange 412 can be set on the platform between the first inner hole 311 and the second inner hole 312, and this setting mode can be convenient to detach or replace the first cylindrical portion 41.

According to an embodiment of the present invention, a part of the lower end of the second cylindrical portion 42 is also disposed in the first inner hole 311, and the lower end thereof abuts against the upper end of the second cylindrical portion 42, thereby fixing the first cylindrical portion 41. The second cylindrical portion 42 is further provided with a second flange 422 for fixing to the upper surface of the slide base 3, and the second flange 422 and the upper surface of the slide base 3 may be connected by bolts.

According to an embodiment of the present invention, referring to fig. 12, second accommodation hole 411 may include third hole 4111 and a fourth hole 4112 disposed below third hole 4111, and the diameter of third hole 4111 is greater than the diameter of fourth hole 4112.

According to the embodiment of the present invention, an ejection device (not shown in the figure) may be further disposed at the lower end of the second receiving hole 411 of the first cylindrical portion 41, for ejecting the bolt with the formed head upward from the forming block 43 at the upper end of the forming portion 4 through the lower end of the second receiving hole 411.

According to the embodiment of the present invention, the lower end of the second containing hole 411 of the first cylindrical portion 41 is divided into the third inner hole 4111 and the fourth inner hole 4112, and the main purpose thereof is to prevent the ejection device from falling off from the lower end of the second containing hole 411 of the first cylindrical portion 41.

Fig. 15 schematically shows a schematic cross-sectional view of a forming block according to an embodiment of the invention in the axial direction. Fig. 16 schematically shows a schematic cross-sectional view of a spacer block according to an embodiment of the invention in an axial direction.

According to the embodiment of the present invention, referring to fig. 11 and 15, the upper end of the forming block 43 is provided with a circular boss 431, and the diameter of the fourth accommodating hole 431 is smaller than that of the second accommodating hole 411.

According to the embodiment of the present invention, referring to fig. 11 and 16, the forming portion 4 may further include a spacer 44, in which a fifth receiving hole 441 is disposed, and the spacer 44 is disposed between the forming block 43 and the first cylindrical portion 41.

According to the embodiment of the present invention, when the distance between the forming block 43 in the forming part 4 and the top press device (not shown in the figure) is not enough, the distance between the two can be shortened by adding the cushion block 44. The cushion block 44 is directly placed in the third containing hole 421, and is only mutually extruded and fixed through the forming block 43 at the upper end, the cover plate 45 and the first cylindrical part 41 at the lower end, so that the cushion block 44 can be conveniently taken out and used.

According to an embodiment of the present invention, the diameter of the fifth receiving hole 441 is the same as and concentric with the diameter of the fourth receiving hole 431.

According to an embodiment of the present invention, referring to fig. 17, the forming portion 4 may further include a cover plate 45, which is provided with a sixth receiving hole 451 movably connected to the upper surface of the second cylindrical portion 42.

According to the embodiment of the present invention, the cover plate 45 is bolted to the second cylindrical portion 42, and the inner edge of the cover plate 45 contacts the upper surface of the platform of the boss 431 of the forming block 43. The cover plate 45 is used to fix and press the molding block 43 and the spacer 44 in the third accommodation hole 421 of the second cylindrical portion 42.

According to an embodiment of the present invention, although not shown, both ends of the slide 3 not having the guide protrusion 32 are provided with a push-pull device for displacing the slide 3 in the direction of the adjustment hole.

According to the utility model discloses an embodiment, push-and-pull device can be cylinder or pneumatic cylinder.

According to the utility model discloses an embodiment adopts the utility model discloses a forming device for head of bolt carries out the fashioned process flow of bolt head includes following step:

step one, the sliding seat 3 and the forming part 4 are pushed out to a certain displacement in the horizontal direction with a pressing device above the forming device through a push-pull device, so that the forming part of the forming device and the pressing device are staggered in the vertical direction, and the step of putting in the bar for manufacturing the bolt is not hindered by the upper pressing device.

And step two, putting the bar stock for forming the head of the bolt into each accommodating hole in the forming part 4 through the mechanical arm.

And step three, pulling the forming part 4 and the sliding seat 3 back to the position right below the pressing device through the push-pull device, enabling the pressing device to move downwards, and forming the head of the bolt (upsetting).

And step four, repeating the step two, and ejecting the bolt with the molded head through an ejection device at the inner lower end of the second accommodating hole 411 of the first cylindrical part 41 to complete the molding of the head of the bolt.

It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the protection scope of the present invention. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present invention.

And the shapes and sizes of the respective members in the drawings do not reflect the actual sizes and proportions, but merely illustrate the contents of the embodiments of the present invention. Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A molding apparatus for making a head of a bolt, comprising:

2. The molding apparatus as defined in claim 1, wherein one of said base and said slide is provided with a guide groove, said adjustment hole is formed on a groove bottom of said guide groove, and the other of said base and said slide is provided with a guide projection cooperating with said guide groove.

3. The molding device as claimed in claim 2, wherein two vertical walls extending along the length direction are provided on two sides of the base, and a pressing plate is provided on each vertical wall, and the width of the pressing plate is greater than that of the vertical wall, so as to form the guide groove on the inner side of the vertical wall;

the guide projection is formed on the slider.

4. The molding apparatus as defined in claim 3, wherein a baffle is mounted to an outer side of each of said upright walls and pressure plates.

5. The molding apparatus as defined in claim 4, wherein a portion of said presser plate located in said guide groove is provided with at least one first oil hole for injecting lubricating oil between said presser plate and said slide.

6. The molding device as claimed in claim 4, wherein said pressing plate is further provided with a first fixing hole for fixing with said vertical wall; and

7. The molding apparatus as claimed in claim 5, wherein said guide projection is provided with a plurality of second oil injection holes connecting an upper surface of said guide projection and an outer wall of said guide projection which is joined to said standing wall, for injecting lubricating oil to said outer wall; and

wherein, the second oil filler hole including set up in the input port of the protruding upper surface of guide and set up in the delivery outlet on the outer wall.

8. The molding apparatus as defined in claim 7, wherein the first oil filler hole communicates with the input port of the second oil filler hole; and

wherein the number of the first oil holes is the same as the number of the second oil holes.

9. The molding apparatus as defined in claim 7, wherein said outer wall of said guide protrusion is provided with an oil groove communicating with said outlet port of said second oil feed hole to uniformly disperse the lubricating oil flowing into said outer wall through said second oil feed hole.

10. The molding apparatus as defined in one of claims 2-9, wherein said first receiving bore in said slide is stepped, comprising, in sequence from top to bottom, a first inner bore and a second inner bore;

wherein the outer diameter of the second inner bore is not greater than the inner diameter of the adjustment bore.

11. The molding apparatus as defined in claim 10, wherein the molding section comprises:

the first cylindrical part is internally provided with a through second containing hole, and the first cylindrical part is arranged in the first containing hole and the adjusting hole in a penetrating manner;

a forming block, which is provided with a fourth accommodating hole penetrating through the thickness direction of the forming block, is arranged in the third accommodating hole of the second cylindrical part and is arranged on the first cylindrical part; and

12. The molding apparatus as defined in claim 11, wherein a first flange extending outwardly is provided on an outer wall of an upper end of said first cylindrical portion, said flange being hung on a platform of said first receiving hole of stepped shape.

13. The molding apparatus as defined in claim 12, wherein the diameter of the outer edge of the first flange is greater than the diameter of the second bore and less than the diameter of the first bore; and

the thickness of the first flange is less than the height of the first bore.

14. The molding apparatus as defined in claim 11, wherein the second receiving bore includes a third bore and a fourth bore disposed below the third bore, the third bore having a diameter greater than a diameter of the fourth bore.

15. The molding apparatus as defined in claim 11, wherein an outer wall of said second cylindrical portion adjacent said lower end is provided with a second outwardly extending flange for connection to said slide.

16. The molding apparatus as defined in claim 15, wherein a diameter of the second flange to an outer wall at a lower end of the second cylindrical portion is less than a diameter of the first bore.

17. The molding apparatus as defined in claim 11, wherein the upper end of the molding block is provided with a circular boss, and the diameter of the fourth receiving hole is smaller than that of the second receiving hole.

18. The molding apparatus as defined in claim 11, wherein the molding section further includes a spacer block having a fifth receiving hole therein, the spacer block being disposed between the molding block and the first cylindrical section.

19. The molding apparatus as defined in claim 18, wherein the diameter of the fifth containment hole is the same as and concentric with the diameter of the fourth containment hole.

20. The molding apparatus as defined in claim 11, wherein the molding section further includes a cover plate having a sixth receiving hole therein and movably connected to the upper surface of the second cylindrical section.

21. The molding apparatus as claimed in claim 20, wherein both ends of said slide free of said guide projection are provided with a push-pull device for displacing said slide in the direction of said adjustment hole.