阅读说明：本技术 一种平开合页冲压设备 (Flat-open hinge stamping equipment ) 是由 毛瑜 唐明朗 唐天昊 于 2020-12-30 设计创作，主要内容包括：本发明提供一种平开合页冲压设备,包括第一冲压模块和第二冲压模块,第一冲压模块包括第一冲孔结构,用于冲压第一组平开合页的孔位；第一折弯结构,设置于第一冲孔结构的一侧并朝远离第二冲压模块的方向延伸设置,用于折弯第一组平开合页的未成型的中环；第一冲型移动结构,用于对该组平开合页的两片扇叶进行冲型并移送至第一折弯结构处；第二冲压模块包括第二冲孔结构,与第一冲孔结构相邻且非垂直设置,用于冲压第二组平开合页的孔位；第二折弯结构,设置于第二冲孔结构的一侧并朝向远离第一冲压模块的方向延伸设置,用于折弯第二组平开合页的未成型的中环；第二冲型移动结构,用于对该组平开合页的两片扇叶进行冲型并移送至第二折弯结构处。(The invention provides a casement hinge stamping device which comprises a first stamping module and a second stamping module, wherein the first stamping module comprises a first punching structure used for stamping hole sites of a first group of casement hinges; the first bending structure is arranged on one side of the first punching structure, extends towards the direction far away from the second punching module and is used for bending the unformed middle ring of the first group of flat-open hinges; the first punching moving structure is used for punching two fan blades of the set of casement hinges and transferring the fan blades to the first bending structure; the second punching module comprises a second punching structure, is adjacent to and non-vertically arranged with the first punching structure and is used for punching hole sites of a second group of casement hinges; the second bending structure is arranged on one side of the second punching structure, extends towards the direction far away from the first punching module and is used for bending the unformed middle ring of the second group of flat-open hinges; and the second punching moving structure is used for punching two fan blades of the group of flat-open hinges and transferring the fan blades to the second bending structure.)

1. The utility model provides a flat-open hinge stamping equipment which characterized in that, includes first punching press module and second punching press module, first punching press module includes:

the first punching structure is used for punching hole positions of a first group of the casement hinges;

the first bending structure is arranged on one side of the first punching structure, extends towards the direction far away from the second punching module and is used for bending an unformed middle ring (12) of the first group of flat-open hinges;

the first punching moving structure is arranged between the first punching structure and the first bending structure and used for punching and transferring two fan blades (11) of a first group of the flat-open hinge to the first bending structure;

the second stamping module comprises:

the second punching structure is adjacent to the first punching structure and is not vertically arranged, and is used for punching hole sites of a second group of the casement hinges;

the second bending structure is arranged on one side of the second punching structure, extends towards the direction far away from the first punching module and is used for bending the unformed middle ring (12) of the second group of flat-open hinges;

the second punching moving structure is arranged between the second punching structure and the second bending structure and used for punching and transferring the fan blades (11) of the second group to the second bending structure.

2. The flat-open hinge stamping apparatus of claim 1, wherein the first and second punch structures are arranged in parallel.

3. The flat-open hinge stamping apparatus of claim 1, wherein the first bending structure is disposed perpendicular to the first punch structure and parallel to the second bending structure.

4. Flat-open hinge punching apparatus according to claim 1, wherein said first punch-type moving structure comprises a first punch-type transfer structure and a first translation structure (91), the first punching type transfer structure is arranged at the joint of the first punching structure and the first bending structure, the first translation structure (91) is arranged on one side of the first punching structure far away from the first bending structure and is arranged on the same straight line with the first bending structure, and the output end of the first translation structure (91) is positioned below the first punch type transfer structure, the first punching type transfer structure punches two fan blades (11) of a first group of the flat-open hinge and pushes the two fan blades to the first translation structure (91), the first translation structure (91) is used for transferring the fan blade (11) from the first punching structure to the first bending structure; the first punch-type moving structure comprises a second punch-type transferring structure and a second translation structure (92), the second punching type transfer structure is arranged at the joint of the second punching structure and the second bending structure, the second translation structure (92) is arranged on one side of the second punching structure far away from the second bending structure and is arranged on the same straight line with the second bending structure, and the output end of the second translation structure (92) is positioned below the second punch-type transfer structure, the second punching type transfer structure punches the two fan blades (11) of the second group of the flat-open hinge and pushes the two fan blades to the second translation structure (92), the second translation structure (92) is used for transferring the fan blade (11) from the second punching structure to the second bending structure, and the first punching type transfer structure is arranged on one side of the second punching structure.

5. The flat-open hinge stamping apparatus of claim 1, wherein the first and second punch structures each comprise:

the through hole stamping structure is used for stamping a through hole (13) in the casement hinge;

and the chamfer stamping structure is used for stamping a chamfer (14) on the through hole (13).

6. The flat-open hinge stamping apparatus of claim 1, wherein the first and second bending structures each comprise:

the preliminary bending structure is used for preliminarily bending the unformed middle ring (12) of the casement hinge;

and the complete bending structure is used for completely bending the unformed middle ring (12) of the primarily bent flat-open hinge.

7. The flat-open hinge stamping apparatus of claim 6, wherein the preliminary bending structures each include:

the first base (42) is provided with a first groove (421), and one end of the first groove (421) is provided with an arc (422);

the punch rod (41) is arranged opposite to the first groove (421), a round corner (411) arranged corresponding to the circular arc (422) is arranged at the bottom end of the punch rod (41), and an unformed middle ring (12) of the casement hinge is placed on the first groove (421);

when the middle ring (12) is preliminarily bent, the punch rod (41) moves towards the direction close to the first groove (421) to punch the unformed middle ring (12) arranged on the first groove (421), so that the unformed middle ring (12) forms a middle ring groove (121), and one end of the middle ring groove (121) forms a circular arc-shaped bending part (122).

8. Flat-open hinge stamping device according to claim 7, characterized in that said fully bent structure comprises:

the punching block (51) is provided with a second groove (511), and the second groove (511) is in a semi-circular arc shape;

the stop piece (52) is arranged on one side of the punch block (51), a stop groove (521) is formed in the stop piece (52), a fan blade (11) of the casement hinge extends into the stop groove (521) and abuts against the bottom of the stop groove (521), and the bent part (122) abuts against the second groove (511);

and the punch block driving structure is in transmission connection with the punch block (51) and is used for driving the punch block (51) to move towards the direction close to the stop piece (52) so as to punch the bent part (122) and crimp the formed middle ring (12).

9. The flat-open hinge stamping device according to claim 1, characterized in that the flat-open hinge stamping device further comprises a middle ring extrusion structure (6), the middle ring extrusion structure (6) is used for extruding two ends of the middle ring (12) to increase a middle ring gap (15) between the middle rings (12), and the first stamping module and the second stamping module are both provided with two groups of middle ring extrusion structures (6) to respectively extrude the middle rings (12) on two fan blades (11) of the same group of flat-open hinges.

10. The flat-open hinge stamping device according to claim 9, wherein the middle ring extrusion structure (6) comprises a second pressure lever (61) and a third pressure lever (62) which are opposite and arranged at intervals, a third inclined surface (611) is arranged at the bottom end of the second pressure lever (61), a fourth inclined surface (621) is arranged at the bottom end of the third pressure lever (62), and the third inclined surface (611) and the fourth inclined surface (621) are inclined from top to bottom towards directions away from each other.

Technical Field

The invention relates to the technical field of hinges, in particular to a flat-open hinge stamping device.

Background

When the casement hinge is installed, the position used for fixing the casement hinge on the door leaf needs to be removed, and compared with the primary and secondary hinges, the convenience is lower, but the durability of the casement hinge is better, and therefore the market demand of the casement hinge is not low. The existing flat-open hinge stamping equipment can only produce a group of flat-open hinges at the same time, the work efficiency is low, the machine volume is large, the space waste of a production workshop is caused, and the production cost is increased.

Disclosure of Invention

The invention aims to provide a flat-open hinge stamping device which can be used for producing two groups of flat-open hinges at the same time, has high working efficiency, compact structure and smaller volume, is easy to arrange in a production workshop, improves the space utilization rate of the workshop and reduces the production cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a flat-open hinge stamping equipment, includes first punching press module and second punching press module, first punching press module includes:

the first punching structure is used for punching hole positions of a first group of the casement hinges;

the first bending structure is arranged on one side of the first punching structure, extends towards the direction far away from the second punching module and is used for bending the unformed middle ring of the first group of flat-open hinges;

the first punching moving structure is arranged between the first punching structure and the first bending structure and used for punching and transferring two fan blades of a first group of the flat-open hinge to the first bending structure;

the second stamping module comprises:

the second punching structure is adjacent to the first punching structure and is not vertically arranged, and is used for punching hole sites of a second group of the casement hinges;

the second bending structure is arranged on one side of the second punching structure, extends towards the direction far away from the first punching module and is used for bending the unformed middle ring of the second group of flat-open hinges;

the second punching moving structure is arranged between the second punching structure and the second bending structure and used for punching and transferring the fan blades of the second group to the second bending structure.

Optionally, the first punching structure and the second punching structure are arranged in parallel.

Optionally, the first bending structure is perpendicular to the first punching structure and parallel to the second bending structure.

Optionally, the first punching type moving structure comprises a first punching type transfer structure and a first translation structure, the first punching type transfer structure is arranged at a joint of the first punching structure and the first bending structure, the first translation structure is arranged at one side of the first punching structure, which is far away from the first bending structure, and is arranged on the same straight line with the first bending structure, an output end of the first translation structure is positioned below the first punching type transfer structure, the first punching type transfer structure performs punching type on two fan blades of a first group of the casement hinges and pushes the two fan blades to the first translation structure, and the first translation structure is used for transferring the fan blades from the first punching structure to the first bending structure; the first punching type moving structure comprises a second punching type transferring structure and a second translation structure, the second punching type transferring structure is arranged at the joint of the second punching structure and the second bending structure, the second translation structure is arranged on one side, away from the second bending structure, of the second punching structure and is arranged on the same straight line with the second bending structure, the output end of the second translation structure is located below the second punching type transferring structure, the second punching type transferring structure is used for punching and pushing the two fan blades of the second group of the casement hinge to the second translation structure, the second translation structure is used for transferring the fan blades to the second bending structure from the second punching structure, and the first punching type transferring structure is arranged on one side of the second punching structure.

Optionally, the first and second punch structures each comprise:

the through hole stamping structure is used for stamping a through hole in the casement hinge;

and the chamfer stamping structure is used for stamping a chamfer on the through hole.

Optionally, the first bending structure and the second bending structure each include:

the preliminary bending structure is used for preliminarily bending the unformed middle ring of the casement hinge;

and the complete bending structure is used for completely bending the unformed middle ring of the initially bent casement hinge.

Optionally, the preliminary bending structures each include:

the device comprises a first base, a second base and a third base, wherein a first groove is formed in the first base, and an arc is formed at one end of the first groove;

the punch rod is arranged opposite to the first groove, a round angle arranged corresponding to the circular arc is arranged at the bottom end of the punch rod, and an unformed middle ring of the casement hinge is placed on the first groove;

when the middle ring is preliminarily bent, the punch rod moves towards the direction close to the first groove to punch the unformed middle ring arranged on the first groove, so that the unformed middle ring forms a middle ring groove, and one end of the middle ring groove forms an arc-shaped bending part.

Optionally, the fully-bent structure comprises:

the punching block is provided with a second groove, and the second groove is in a semi-arc shape;

the stop piece is arranged on one side of the punch block, a stop groove is formed in the stop piece, a fan blade of the casement hinge extends into the stop groove and abuts against the bottom of the stop groove, and the bent part abuts against the second groove;

and the punch driving piece is in transmission connection with the punch and is used for driving the punch block to move towards the direction close to the stop piece so as to punch the bent part to be curled to form a formed middle ring.

Optionally, flat-open hinge stamping equipment still includes well ring extrusion structure, well ring extrusion structure is used for the extrusion the well ring, in order to increase well ring clearance between the well ring, all be provided with two sets of on first punching press module and the second punching press module well ring extrusion structure is in order to extrude same group respectively on two flabellums of flat-open hinge the well ring.

Optionally, the middle ring extrusion structure includes a second pressing rod and a third pressing rod which are opposite and arranged at intervals, a third inclined plane is arranged at the bottom end of the second pressing rod, a fourth inclined plane is arranged at the bottom end of the third pressing rod, and the third inclined plane and the fourth inclined plane are inclined from top to bottom towards directions away from each other.

The invention has the beneficial effects that:

the invention provides a flat-open hinge stamping device which comprises a first stamping module and a second stamping module, wherein the first stamping module comprises a first punching structure and a first bending structure, and the second stamping module comprises a second punching structure and a second bending structure. The first punching structure and the second punching structure are arranged adjacently and non-perpendicularly and are used for respectively punching hole sites on fan blades of two groups of casement hinges so as to improve machining efficiency of the casement hinges, further avoid waste of space positions caused by gaps between the first punching structure and the second punching structure, and facilitate reduction of the size of the casement hinge punching equipment, so that the effect of compact structure of the casement hinge punching equipment is obtained. First bending structure and second bending structure extend the setting towards the direction of keeping away from each other to do benefit to and process two sets of flat-open hinges respectively, with improve flat-open hinge machining efficiency, and make flat-open hinge stamping equipment's overall arrangement more reasonable, and then make flat-open hinge stamping equipment's structure more compact, do benefit to and settle in the workshop, improve the space utilization in workshop, reduction in production cost.

Drawings

Fig. 1 is an exploded schematic view of a structure of a flat-open hinge provided in an embodiment of the present invention, in which two blades of the flat-open hinge are engaged with a middle ring;

fig. 2 is a schematic side view of a fan blade and a middle ring of a flat-open hinge stamping device according to an embodiment of the present invention;

fig. 3 is an operation station distribution diagram of the flat-open hinge punching equipment according to the embodiment of the invention;

fig. 4 is a schematic structural diagram of a female die of a flat-open hinge stamping device according to a specific embodiment of the present invention;

fig. 5 is a schematic structural view of a first chamfering punch of the flat-open hinge punching apparatus according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of two sets of preliminary bending structures of the flat-open hinge stamping device provided in the embodiment of the present invention, which are matched with each other;

FIG. 7 is an enlarged view at A in FIG. 6;

FIG. 8 is an enlarged view at B in FIG. 6;

fig. 9 is a schematic structural diagram of a complete bending structure of the flat-open hinge stamping device according to the embodiment of the present invention;

FIG. 10 is an enlarged view at C of FIG. 9;

fig. 11 is a schematic structural diagram of a flat-open hinge stamping device according to an embodiment of the present invention.

In the figure:

100. a material belt;

11. a fan blade; 12. a middle ring; 121. a middle ring groove; 122. a bending part; 13. a through hole; 14. chamfering; 15. the middle ring gap;

2. a female die; 211. a first through hole die hole; 212. a first chamfer die hole; 213. a first set of fan blade die holes; 221. a second through hole die hole; 222. a second chamfer die hole; 223. a second set of fan blade die holes;

31. a ram body; 32. chamfering the punch;

4. a preliminary bending structure; 41. punching; 411. round corners; 42. a first base; 421. a first groove; 422. a circular arc;

5. a fully bent structure; 51. punching a block; 511. a second groove; 52. a stopper; 521. a stopper groove; 53. a first pressure lever; 531. a first inclined plane; 54. a transmission block; 541. a second inclined plane; 55. cushion blocks;

6. a medium ring extrusion structure; 61. a second compression bar; 611. a third inclined plane; 62. a third compression bar; 621. a fourth slope;

70. a first punching station; 710. a first bending station; 71. a first through hole punching station; 72. a first chamfer stamping station; 73. a first stamping station; 74. a second stamping station; 75. a first preliminary bending station; 76. a first full bending station; 77. a first middle ring extrusion station;

80. a second punching station; 810. a second bending station; 81. a second through hole punching station; 82. a second chamfer stamping station; 83. a third stamping station; 84. a fourth stamping station; 85. a second primary bending station; 86. a second full bending station; 87. a second middle ring extrusion station;

91. a first translation structure; 92. a second translation structure; 93. a first position; 94. a second position.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Referring to fig. 1 and 2, the casement hinge includes two blades 11, a plurality of through holes 13 are formed on the blades 11, chamfers 14 are formed on the through holes 13, and a plurality of middle rings 12 are further formed on one side of the blades 11.

The invention provides a flat-open hinge stamping device. The flat-open hinge stamping equipment comprises a first stamping module and a second stamping module, wherein the first stamping module comprises a first punching structure, a first bending structure and a first punching type moving structure. The first punching structure is used for punching hole positions of a first group of side-hung hinges. The first bending structure is arranged on one side of the first punching structure and extends towards the direction away from the second punching module, and is used for bending the unformed middle ring 12 of the first group of flat-open hinges. The first punching type moving structure is arranged between the first punching structure and the first bending structure and used for punching and transferring two fan blades 11 of the first group of flat-open hinges to the first bending structure. The second punching module comprises a second punching structure, a second bending structure and a second punching moving structure. The second punching structure is adjacent to the first punching structure and is not vertically arranged, and the second punching structure is used for punching hole positions of a second group of flat-open hinges. The second bending structure is arranged on one side of the second punching structure and extends towards the direction away from the first punching module (i.e. the first bending structure and the second bending structure extend towards the direction away from each other) for bending the unformed middle ring 12 of the second group of casement hinges. The second punching type moving structure is arranged between the second punching structure and the second bending structure and used for punching and transferring two fan blades 11 of the second group of flat-open hinges to the second bending structure.

Referring to fig. 3, the first punching module includes a first punching station 70 and a first bending station 710, the first punching structure is disposed at the first punching station 70, and the first bending structure is disposed at the first bending station 710. The second punching module comprises a second punching station 80 and a second bending station 810, the second punching structure is arranged at the second punching station 80, and the second bending structure is arranged at the second bending station 810. As shown in fig. 3, the first punching station 70 is adjacent to the second punching station 80, and on one hand, the first punching structure and the second punching structure punch hole sites on the fan blades 11 of two sets of casement hinges respectively to improve the machining efficiency of the casement hinges, and on the other hand, the waste of spatial positions between the first punching structure and the second punching structure is avoided, so that the size of the casement hinge punching equipment is reduced, and the compact structure of the casement hinge punching equipment is obtained. First station 710 and the second station 810 of bending extend the setting along the direction of keeping away from each other respectively to do benefit to and process two sets of flat-open hinges respectively, with improving flat-open hinge machining efficiency, and make flat-open hinge stamping equipment's overall arrangement more reasonable, and then make flat-open hinge stamping equipment's structure more compact, do benefit to and settle in the workshop.

Optionally, the first punching structure and the second punching structure are arranged in parallel, so that the same material belt 100 moves in the same direction to realize the respective punching operation of the two groups of casement hinges, and the feeding operation of the material belt 100 is simplified.

Optionally, the first bending structure and the first punching structure are arranged perpendicularly and are arranged parallel to the second bending structure, so that the first bending structure and the second bending structure are arranged regularly, and the size of the flat-open hinge punching equipment is reduced.

Optionally, the first and second punching structures each comprise a through hole punching structure and a chamfer punching structure. The through hole punching structure is used for punching the through hole 13 on the fan blade 11. The chamfer punch structure is used to punch a chamfer 14 on the through-hole 13.

Optionally, the first punching type moving structure includes a first punching type transferring structure and a first translating structure 91, the first punching type transferring structure is disposed at a connection portion of the first punching structure and the first bending structure, the first translating structure 91 is disposed on a side of the first punching structure away from the first bending structure and is disposed on the same straight line with the first bending structure, and an output end of the first translating structure 91 is located below the first punching type transferring structure. The first punching type transfer structure punches two fan blades 11 of the first group of flat-open hinges and pushes the fan blades to the first translation structure 91, and the first translation structure 91 is used for transferring the fan blades 11 to the first bending structure so that the first bending structure can bend the unformed middle ring 12. The second punching type moving structure comprises a second punching type transferring structure and a second translation structure 92, the second punching type transferring structure is arranged at the joint of the second punching structure and the second bending structure, the second translation structure 92 is arranged on one side of the second punching structure, which is far away from the second bending structure, and is arranged on the same straight line with the second bending structure, and the output end of the second translation structure 92 is positioned below the second punching type transferring structure. The second punching type transfer structure punches the two fan blades 11 of the second group of flat-open hinges and pushes the two fan blades to the second translation structure 92, the second translation structure 92 is used for transferring the fan blades 11 to the second bending structure so that the second bending structure can bend the unformed middle ring 12, the first punching type transfer structure is arranged on one side of the second punching structure, namely the first punching type transfer structure punches the two fan blades 11 of the first group of flat-open hinges firstly and transfers the two fan blades to the first translation structure 91, and then the second punching type transfer structure punches the two fan blades 11 of the second group of flat-open hinges secondly and transfers the two fan blades to the second translation structure 92.

In this embodiment, the first translation structure 91 is disposed on one side of the first punching structure away from the first bending structure and is disposed on the same straight line with the first bending structure, so that the first position 93 between the second bending structure and the second punching structure can be reasonably utilized. The second translation structure 92 is arranged on one side of the second punching structure far away from the second bending structure and is arranged on the same straight line with the second bending structure, and the second position 94 between the first bending structure and the second bending structure can be reasonably utilized, so that the structure of the equipment is more compact, and the miniaturization of the equipment is facilitated.

Illustratively, the first punching type transfer structure includes two push rods with different shapes, the shapes of the two push rods are respectively arranged corresponding to the shapes of the two fan blades 11 one by one, when the two fan blades 11 with different shapes are punched, the two push rods punch the material belt 100, punch out the two fan blades 11 with different shapes, and then correspondingly drop to the first translation structure 91. The second punching type conveying structure is the same as the first punching type conveying structure, and is not described herein again, and the second punching type conveying structure punches out two fan blades 11 with different shapes and then drops the punched fan blades to the second translation structure 92.

Referring to fig. 3, specifically, the first stamping module further includes a first stamping station 73 and a second stamping station 74, one of the push rods of the first stamping transfer structure is disposed at the first stamping station 73, and the other push rod is disposed at the second stamping station 74. The second punching module further comprises a third punching station 83 and a fourth punching station 84, wherein one push rod in the second punching transfer structure is arranged at the third punching station 83, and the other push rod is arranged at the fourth punching station 84.

Optionally, referring to fig. 4, the first punching structure, the second punching structure, the first punching type transferring structure, and the second punching type transferring structure all include a concave die 2, and the concave dies 2 of the first punching structure, the second punching structure, the first punching type transferring structure, and the second punching type transferring structure are made of the same die, so as to simplify the structure.

Specifically, a first through hole mold hole 211, a first chamfer mold hole 212 and two first set of fan blade mold holes 213 with different shapes are sequentially formed on one side of the female mold 2, and a second through hole mold hole 221, a second chamfer mold hole 222 and two second set of fan blade mold holes 223 with different shapes are sequentially formed on the other side of the female mold.

Further, the first punching structure, the second punching structure, the first punching transfer structure and the second punching transfer structure all comprise a male die, the male die is arranged above the female die 2, a first through hole punch corresponding to the first through hole die hole 211, a first chamfering punch corresponding to the first chamfering die hole 212 and the two push rods are sequentially arranged on one side of the male die, and the two push rods are respectively arranged corresponding to the first blade die holes 213 of the first group in two different shapes. The other side of the male die is sequentially provided with a second through hole punch stem corresponding to the second through hole die hole 221, a second chamfer punch stem corresponding to the second chamfer die hole 222 and the two push rods, and the two push rods are respectively arranged corresponding to the two second groups of fan blade die holes 223 in different shapes.

Referring to fig. 3, the first punching station 70 includes a first through-hole punching station 71 and a first chamfer punching station 72, and a first through-hole punch and a first through-hole die hole 211 are disposed at the first through-hole punching station 71. The second punching station 80 comprises a second through hole punching station 81 and a second chamfer punching station 82, and a second through hole punch and a second through hole die hole 221 are arranged at the second through hole punching station 81.

Specifically, the first through hole punch and the second through hole punch are both cylindrical cutters. Referring to fig. 5, the first chamfering punch includes a cylindrical punch body 31, a punch chamfer 32 corresponding to the chamfer 14 is provided at the bottom end of the punch body 31, and the punch chamfer 32 directly punches the chamfer 14.

The structure of the second chamfering punch is the same as the shape of the first chamfering punch, and the details are not repeated here.

Further, the first punching module and the second punching module each further include a conveying assembly, and the conveying assembly is configured to convey the material tape 100 to the first punching station 70 and the second punching station 80, and can convey the fan blades 11 from the first through hole punching station 71 and the second through hole punching station 81 to the first chamfer punching station 72 and the second chamfer punching station 82 at the first punching station 70 and the second punching station 80, and then convey the fan blades to the first punching station 73 and the second punching station 74.

The conveying assembly, the first translation structure 91 and the second translation structure 92 are all prior art of flat-open hinge stamping equipment, and are not described herein again.

Referring to fig. 6-10, optionally, the first bending structure and the second bending structure each include a preliminary bending structure and a complete bending structure 5. The preliminary bending structure is used for preliminarily bending the unformed middle ring 12 of the casement hinge. The complete bending structure 5 is used for completely bending the unformed middle ring 12 of the initially bent casement hinge, so that the middle ring 12 is completely formed.

Referring to fig. 6-8, optionally, the preliminary bending structures each include a first base 42 and a punch 41. The first base 42 is provided with a first groove 421, and one end of the first groove 421 is provided with an arc 422. The plunger 41 is arranged opposite to the first groove 421, the bottom end of the plunger 41 is provided with a round corner 411 arranged corresponding to the circular arc 422, and the middle ring 12 of the unformed casement hinge is placed on the first groove 421. When the centering ring 12 is preliminarily bent, the punch 41 moves towards the direction close to the first groove 421 to punch the unformed middle ring 12 disposed on the first groove 421, so that the unformed middle ring 12 forms a middle ring 12 groove, and one end of the middle ring 12 groove forms the circular arc-shaped bending portion 122, so as to preliminarily bend the unformed middle ring 12, so that the completely bending structure 5 further completely bends the unformed middle ring 12.

Optionally, all be provided with two sets of preliminary bending structures in each punching press module to in 12 buckle preliminarily to the zhonghuan of two flabellums 11 of the flat-open hinge of same group simultaneously, raise the efficiency.

Referring to fig. 3, specifically, the first bending station 710 includes a first preliminary bending station 75 and a first full bending station 76, and the second bending station 810 includes a second preliminary bending station 85 and a second full bending station. 86 the first preliminary bending station 75 and the second preliminary bending station 85 are both provided with preliminary bending structures. The first and second full bending stations 76, 76 are each provided with a full bending structure 5.

Referring to fig. 9 and 10, optionally, the fully-bent structure 5 includes a punch 51 and a stopper 52. The punch block 51 is provided with a second groove 511, and the second groove 511 is in a semi-arc shape. The stop piece 52 is arranged on one side of the punch block 51, the stop groove 521 is formed in the stop piece 52, the fan blade 11 of the casement hinge extends into the stop groove 521 and abuts against the bottom of the stop groove 521, and the bent portion 122 abuts against the second groove 511. The punch block transmission structure is in transmission connection with the punch block 51 and is used for driving the punch block 51 to move towards the direction close to the stop piece 52 so as to punch the bent part 122 to curl and form the formed middle ring 12.

Specifically, the punch block transmission structure comprises a first pressure lever 53 arranged on one side of the punch block 51 far away from the stop piece 52, a first inclined surface 531 is arranged at the lower end of the first pressure lever 53, a transmission block 54 is arranged below the first pressure lever 53, a second inclined surface 541 corresponding to the first inclined surface 531 is arranged on the upper side of the transmission block 54, and one side of the transmission block 54 is abutted against one side of the punch block 51 far away from the stop piece 52. The first inclined surface 531 and the second inclined surface 541 are both inclined from top to bottom in a direction away from the punch 51. When the centering ring 12 is completely bent, the first pressure lever 53 moves downward, the first inclined surface 531 abuts against the second inclined surface 541 and pushes the transmission block 54 to move towards the punch block 51 and pushes the punch block 51 to move towards the direction close to the stop member 52, and the second groove 511 acts on the bending portion 122, so that the bending portion 122 curls towards the fan blades 11 until the formed middle ring 12 is formed.

Optionally, each stamping module is provided with two groups of completely-bent structures to bend the middle rings 12 of the two fan blades 11 of the same group of casement hinges in the group at the same time, so that the efficiency is improved.

In order to ensure the stability of the second groove 511 acting on the bending portion 122, optionally, the punch transmission structure further includes a cushion block 55, the cushion block 55 is disposed on one side of the punch 51 away from the stop member 52, the cushion block 55 has a larger volume, the area of one side abutting against the punch 51 is larger, and the transmission block 54 acts on the punch 51 through the cushion block 55, so that the stress of the punch 51 can be more uniform, and the bending effect can be improved.

Referring to fig. 11, optionally, the casement hinge stamping device further includes a middle ring squeezing structure 6, wherein the middle ring squeezing structure 6 is used for squeezing the middle ring 12 to increase a gap between the middle rings 12, so that the middle rings 12 of the two blades 11 of the same set of casement hinges can be smoothly placed in a staggered manner, and then the central rotating shaft of the casement hinge is installed. In order to improve the production efficiency, two groups of middle ring extrusion structures are arranged on the first stamping module and the second stamping module respectively to extrude middle rings 12 on two fan blades 11 of the same group of flat-open hinges respectively.

Specifically, the middle ring extrusion structure 6 includes a second pressure lever 61 and a third pressure lever 62 which are opposite and spaced, a third inclined surface 611 is disposed at the bottom end of the second pressure lever 61, a fourth inclined surface 621 is disposed at the bottom end of the third pressure lever 62, and the third inclined surface 611 and the fourth inclined surface 621 are both inclined from top to bottom toward a direction away from each other.

When the flat-open hinge stamping device is closed, the second pressure lever 61 and the third pressure lever 62 move downwards, so that the third inclined surface 611 abuts and presses one end of the middle ring 12, the fourth inclined surface 621 abuts and presses the other end of the middle ring 12, and the same middle ring extrusion structure 6 sequentially extrudes the middle ring 12 on the same fan blade 11, so that the gap between the middle rings 12 is increased, and the symmetry of the middle rings 12 is ensured.

Referring to fig. 3, the flat-open hinge stamping apparatus further includes a first middle ring extrusion station 77 and a second middle ring extrusion station 87, wherein two middle ring extrusion structures 6 are disposed at the first middle ring extrusion station 77 and the second middle ring extrusion station 87 respectively to extrude the middle rings 12 on the two leaves 11 of the two sets of flat-open hinges respectively.

Optionally, the flat-open hinge stamping equipment further comprises a blanking mechanism, and one side of the middle ring extrusion structure 6 is provided with a group of blanking mechanisms so as to transfer the fan blades 11 completing the middle ring 12 extrusion process into the material collecting box. The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.