CN220942878U - Spring sheet forming device - Google Patents

Abstract

The utility model relates to the technical field of optical communication, in particular to an elastic sheet forming device. Including the frame to and set up the subassembly and the shaping subassembly of pushing away in the frame, push away the subassembly and include first straight line push rod and first ejector pad, set up two sets of relative pushing away the subassembly in the frame, and form the clearance that supplies the equipment module to place between two first ejector pads, so that the terminal inwards bending of shell fragment on the equipment module, shaping subassembly includes second straight line push rod and punching press piece, and the punching press piece is connected with the flexible end of second straight line push rod, and the punching press piece is used for making the terminal secondary bending of shell fragment after buckling and shaping in the package clamp groove of shell. The elastic sheet forming device adopts a multi-cylinder matching and multi-stage linkage mode to form the elastic sheet and the optical module device in a one-time quick wrapping mode, so that the automation of elastic sheet forming is realized, and the forming efficiency is effectively improved.

Description

Spring sheet forming device

Technical Field

The utility model relates to the technical field of optical communication, in particular to an elastic sheet forming device.

Background

In the optical communications industry, particularly for data center information transmission, an optical module device is required, as shown in fig. 1 and 2, where the optical module device generally includes a housing 1 and a cable 2, the housing 1 is formed by butting an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are butted to enable the housing to cover the cable 2. However, in the assembly process of the optical module device, the cable 2 inside the optical module device usually has a large force for expanding the upper housing and the lower housing, so that the upper housing 11 and the lower housing 12 are required to be clamped by the elastic sheet 3. In order to improve the assembly efficiency of the optical module device, the shape of the housing 1 and the shape of the spring plate 3 are usually preformed, that is, a circle of non-closed clamping groove 13 is preset on the outer wall of the housing 1, and the spring plate 3 is preset to be adapted to the "C" structure of the clamping groove 13. Referring to fig. 2, when the optical module device is assembled, the C-shaped spring plate 3 is inserted into the clamping groove 13 of the housing 1, and the clamping formation of the spring plate 3 on the housing 1 can be completed only by bending the two ends of the spring plate 3 and attaching the two ends into the clamping groove 13.

However, since the "C" shaped spring sheet 3 needs to be combined with the optical module device to perform the packing molding, the molding operation is relatively complex, and a device for performing the fast packing molding after the preformed spring sheet is combined with the optical module device is lacking at present.

Disclosure of utility model

The technical problem to be solved by the embodiment of the utility model is to provide a spring forming device to solve the problem that the preformed spring is difficult to rapidly package and form after being combined with an optical module device in the prior art.

The utility model discloses a spring piece forming device, which comprises a frame, a pushing component and a forming component, wherein the pushing component and the forming component are arranged on the frame;

The pushing assembly comprises a first linear push rod and a first push block, the first push block is connected with the telescopic end of the first linear push rod, two groups of opposite pushing assemblies are arranged on the rack, a gap for placing an assembly module is formed between the two first push blocks, and when the two first push blocks are mutually close, the tail end of an elastic sheet on the assembly module is inwards bent;

The forming assembly comprises a second linear push rod and a stamping block, wherein the stamping block is connected with the telescopic end of the second linear push rod, and the stamping block is used for enabling the tail end of the bent elastic piece to be bent for the second time and shaped in the clamping groove of the shell.

Optionally, the punching press piece includes the punching press body, and sets up two punching press archs that set up relatively on the punching press body, the punching press body with the flexible end of second straight line push rod is connected be formed with first punching press face on the punching press arch, just the punching press body is located the bellied outside of punching press is formed with the second punching press face, so that the terminal secondary bending of shell fragment forms the ladder bending structure.

Optionally, the elastic sheet forming device further comprises a positioning assembly arranged on the frame, the positioning assembly comprises a base and a positioning mechanism arranged on the base, and the positioning mechanism is used for limiting the assembly module.

Optionally, positioning mechanism includes positioning seat, stopper, rotation piece and locking piece, be formed with the constant head tank that supplies the equipment module to put into on the positioning seat, the rotation piece with the cell wall of constant head tank one side rotates to be connected, the one end of stopper with the cell wall of constant head tank opposite side rotates to be connected, just be formed with on the other end of stopper with the spacing bayonet socket that the rotation piece corresponds, the locking piece with the rotation piece rotates to be connected, so that the locking piece is right the rotation of stopper is spacing.

Optionally, the shell fragment forming device is still including setting up pre-compaction subassembly in the frame, pre-compaction subassembly includes clamping jaw cylinder, second ejector pad and pre-compaction piece set up one respectively on two fingers of clamping jaw cylinder the second ejector pad, and two form the clearance that supplies the equipment module to put into between the second ejector pad, the pre-compaction piece sets up on the second ejector pad, the pre-compaction piece is used for making the terminal inwards of shell fragment is buckled in advance, the second ejector pad with form spacing clearance between the positioning seat.

Optionally, the pre-compaction piece includes the pre-compaction body to and set up two pre-compaction archs that set up relatively on the pre-compaction body, two form between the pre-compaction arch with the pre-compaction space that the package presss from both sides the groove corresponds, so that one of them the pre-compaction arch is used for the shell fragment terminal inwards buckles in advance.

Optionally, the first ejector pad includes the ejector pad body, and the setting is in the ejector pad on the ejector pad body, the ejector pad is located the top of pre-compaction piece, just the ejector pad with the pre-compaction is protruding can correspond respectively with the terminal of shell fragment, in order to right the terminal inwards of shell fragment is buckled.

Optionally, the frame includes the material loading platform, be provided with two relative tracks on the mesa of material loading platform, the base is located two between the track, just the base with track sliding connection the material loading platform is located offer the spout on the mesa of base downside, and be connected with in the bottom of base and wear to locate limiting plate in the spout, be provided with the third straight line push rod in the material loading platform, the flexible end of third straight line push rod with the limiting plate is connected.

Optionally, a limiting rod is arranged on the punching block, so that the contact between the limiting rod and the table top of the feeding table limits the downward pressing displacement of the punching block.

Optionally, the frame further comprises a protection box arranged on the table top of the feeding table, the leveling component and the forming component are arranged in the protection box, and a feeding hole for the base to move into the protection box is formed in the wall of the protection box.

Compared with the prior art, the elastic sheet forming device provided by the embodiment of the utility model has the beneficial effects that:

Through adopting the mode of multi-cylinder cooperation and multistage linkage, can be by artifical material loading, after fixed equipment module, promote first ejector pad by first straight line push rod and be close to the equipment module, until first ejector pad makes the terminal inwards bending push away of shell fragment on the equipment module flat, it pushes away the equipment module to push away the briquetting by second straight line push rod again, until the briquetting pushes down and makes the terminal secondary bending of shell fragment after buckling and shaping in the package clamp groove of shell, thereby with the shell and the shell fragment of equipment module disposable rapid prototyping, the automation of shell fragment shaping has been realized, the efficiency of shaping has effectively been improved.

Drawings

The technical scheme of the utility model will be further described in detail below with reference to the accompanying drawings and examples, wherein:

fig. 1 is a schematic diagram of an assembly structure of a spring plate and an optical module device housing;

Fig. 2 is a schematic diagram of an assembly structure of a spring plate and an optical module device housing;

fig. 3 is a schematic diagram of the overall structure of the elastic sheet forming device according to the embodiment of the utility model;

Fig. 4 is an exploded view of an internal structure of a spring forming device according to an embodiment of the present utility model;

FIG. 5 is a schematic structural diagram of a positioning mechanism according to an embodiment of the present utility model;

FIG. 6 is a schematic structural diagram of a stamping block according to an embodiment of the present utility model

FIG. 7 is a schematic view of the pre-compression assembly and positioning mechanism assembly provided by an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of the pre-pressing assembly and the pushing assembly provided by the embodiment of the utility model;

Fig. 9 is a schematic structural diagram of a rack according to an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of the interior of a feeding table according to an embodiment of the present utility model.

The reference numerals in the drawings are as follows:

1. A housing; 11. an upper housing; 12. a lower housing; 13. a clamping groove; 2. a cable; 3. a spring plate; 4. a frame; 41. a feeding table; 411. a chute; 42. a third linear push rod; 43. a track; 44. a protection box; 441. a feed inlet; 5. a pushing assembly; 51. a first linear push rod; 52. a first push block; 521. a pusher body; 522. pushing a knife; 6. a molding assembly; 61. a second linear push rod; 62. stamping blocks; 621. stamping the body; 6211. a second stamping surface; 622. stamping the bulge; 6221. a first stamping surface; 63. a limit rod; 7. a positioning assembly; 71. a base; 711. a limiting plate; 72. a positioning mechanism; 721. a positioning seat; 7211. a positioning groove; 722. a limiting block; 7221. limiting bayonet; 723. a rotating block; 724. a locking piece; 73. a wire slot; 8. a pre-pressing assembly; 81. a clamping jaw cylinder; 82. a second push block; 83. pre-pressing blocks; 831. prepressing the body; 832. and (5) pre-pressing the bulge.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. Preferred embodiments of the present utility model will now be described in detail with reference to the accompanying drawings.

The embodiment of the utility model provides a spring piece forming device, which is shown in fig. 3 and 5, and comprises a frame 4, a flattening component 5 and a forming component 6 which are arranged on the frame 4. The pushing assembly 5 comprises a first linear push rod 51 and a first push block 52, and the first push block 52 is connected with the telescopic end of the first linear push rod 51. Two sets of opposite pushing assemblies 5 are arranged on the frame 4, and a gap for placing the assembled modules is formed between the two first pushing blocks 52. When the two first pushing blocks 52 are close to each other, the tail ends of the elastic sheets 3 on the assembly module are bent inwards to be flattened. The forming assembly 6 comprises a second rectilinear push rod 61 and a punch block 62. The punching block 62 is connected with the telescopic end of the second linear push rod 61, and the punching block 62 is used for secondarily bending and shaping the tail end of the bent elastic sheet 3 in the clamping groove 13 of the shell 1. During specific application, the assembly module can be manually fed and fixed on the frame 4, and two groups of flattening components 5 are distributed on two sides of the assembly module and used for inwards bending and flattening the tail end of the elastic sheet 3 on the assembly module. The forming assembly 6 is arranged between the two groups of pushing assemblies 5 and is arranged above the assembly module and used for secondarily bending and stamping the tail ends of the spring plates 3 from top to bottom.

Through the arrangement of the structure, after the assembly module is manually fed and fixed in a multi-cylinder matching and multi-stage linkage mode, the first push block 52 is pushed by the first linear push rod 51 until the tail end of the elastic sheet 3 on the assembly module is inwards bent and flattened by the first push block 52, the punching block 62 is driven by the second linear push rod 61 to downwards press the assembly module until the punching block 62 downwards presses to enable the tail end of the bent elastic sheet 3 to be secondarily bent and shaped in the clamping groove 13 of the shell 1, so that the shell 1 and the elastic sheet 3 of the assembly module are rapidly shaped at one time.

As described above, as shown in connection with fig. 4 and 6, the punching block 62 of the present embodiment includes the punching body 621 and the two punching protrusions 622 provided on the punching body 621 oppositely provided for the preformed "C" shaped elastic piece 3 having both ends. The punching body 621 is connected to the telescopic end of the second linear push rod 61. A first stamping surface 6221 is formed on the stamping protrusion 622, and a second stamping surface 6211 is formed on the outer side of the stamping protrusion 622 on the stamping body 621, so that the end of the spring plate 3 is bent twice to form a stepped bending structure. By the arrangement of the structure, the two ends of the elastic sheet 3 can be bent for the second time simultaneously in the process of pressing down the punching block 62 by the two punching protrusions 622 corresponding to the two ends of the elastic sheet 3. Meanwhile, by combining the structure of the clamping groove 13 on the optical module device housing 1 to be molded and utilizing the protruding structure of the stamping protrusion 622, a continuous first stamping surface 6221 and a continuous second stamping surface 6211 are formed on the stamping body 621, so that the stamping block 62 can bend the tail end of the elastic sheet 3 for the second time to form a stepped bending structure matched with the clamping groove 13 on the optical module device housing 1, thereby being beneficial to firmly clamping the optical module device housing 1 by the elastic sheet 3.

Further, as shown in fig. 5 and 7, the spring forming apparatus further includes a positioning assembly 7 disposed on the frame 4. The positioning assembly 7 comprises a base 71 and a positioning mechanism 72 arranged on the base 71, wherein the positioning mechanism 72 is used for limiting the assembled module. Specifically, the positioning mechanism 72 includes a positioning seat 721, a limiting block 722, a rotating block 723, and a locking block 724. The positioning seat 721 is formed with a positioning groove 7211 into which the assembly module is placed, and the rotating block 723 is rotatably connected to a groove wall on one side of the positioning groove 7211. One end of the limiting block 722 is rotatably connected with the groove wall on the other side of the positioning groove 7211, and a limiting bayonet 7221 corresponding to the rotating block 723 is formed on the other end of the limiting block 722. The lock block 724 is rotatably coupled to the rotation block 723 such that the lock block 724 limits the rotation of the stop block 722. By this arrangement, the assembly module can be fixed by the positioning assembly 7. Specifically, after the assembly module is placed on the positioning seat 721 along the positioning groove 7211, the stopper 722 on one side of the positioning seat 721 is rotated to make the free end of the stopper 722 close to the other side of the positioning seat 721, at this time, the rotating block 723 is rotated again to make the rotating block 723 rotate into the limiting bayonet 7221 of the stopper 722, and then the locking block 724 is rotated to make the locking block 724 press-fit on the stopper 722, so that the positioning seat 721, the stopper 722, the rotating block 723 and the locking block 724 are fixed to the housing 1 of the optical module device, and the situation that the elastic sheet 3 shakes or shifts during the wrapping and shaping process is avoided. Otherwise, the locking block 724, the rotating block 723 and the limiting block 722 are sequentially rotated, so that the notch of the positioning groove 7211 can be opened, and the formed assembly module can be conveniently taken out.

Preferably, the above components are rotatably connected by a pin, and the base 71 may be provided with a plurality of positioning mechanisms 72. Furthermore, a wire groove 73 to which the optical module device cable is fixed may be preferably provided on the base 71, and an elbow clamp may be provided for clamping the cable 2 in the wire groove 73.

Further, as shown in fig. 4 and 8, the spring forming apparatus further includes a pre-pressing assembly 8 disposed on the frame 4, and the pre-pressing assembly 8 includes a jaw cylinder 81, a second push block 82, and a pre-pressing block 83. Preferably, the jaw cylinder 81 may be a two-finger jaw cylinder. A second push block 82 is provided on each of the two fingers of the jaw cylinder 81, and a gap for the assembly module to be placed is formed between the two second push blocks 82. The pre-pressing block 83 is provided on the second push block 82 such that the pre-pressing block 83 is used to pre-bend the end of the spring plate 3 inward. In addition, a limiting gap is formed between the second push block 82 and the positioning seat 721. Through the setting of this structure, make two second ejector pad 82 distribute in the both sides of equipment module, drive two second ejector pad 82 through clamping jaw cylinder 81 and be close to buckle certain angle in advance with the terminal of shell fragment 3 by pre-compaction 83, so that push away flat subassembly 5 can be fast with the terminal bending type of shell fragment 3 to the level. In addition, in the displacement process of the second push block 82, the second push block 82 can be contacted with the positioning seat 721 to limit the displacement of the second push block 82, so that devices are effectively protected, damage to the elastic sheet 3 during pre-pressing is reduced, process traces are reduced, and product quality is guaranteed.

Further, the pre-compression block 83 comprises a pre-compression body 831 and two pre-compression protrusions 832 provided on the pre-compression body 831 opposite to each other. A pre-pressing space corresponding to the clamping groove 13 is formed between the two pre-pressing protrusions 832, so that one pre-pressing protrusion 832 is used for pre-bending the end of the spring plate 3 inwards. Through the setting of this structure, utilize the cooperation of the pre-compaction space between two pre-compaction protruding 832 and the last package clamp groove 13 of shell 1, when control second ejector pad 82 removes and drives pre-compaction protruding 832 and be close to the terminal of shell fragment 3, make one of them pre-compaction protruding 832 move into the package clamp groove 13 of shell 1 bottom, thereby fix a position pre-compaction piece 83, so that another pre-compaction protruding 832 inwards buckles certain angle with shell fragment 3 terminal along the package clamp groove 13 at shell 1 top, in order to ensure its pre-compaction precision, and reduce the damage to shell fragment 3 when pre-compaction.

Further, the first pusher 52 includes a pusher body 521, and a pusher 522 provided on the pusher body 521. The push knife 522 is located above the pre-pressing block 83, and the push knife 522 and the pre-pressing protrusion 832 can respectively correspond to the end of the elastic sheet 3, so that the push knife 522 bends and pushes the end of the elastic sheet 3 inwards. Through the arrangement of the structure, the structure of combining the pre-pressing block 83 and the second pushing block 82 is combined, and the push knife 522 corresponding to the pre-pressing block is arranged on the first pushing block 52, so that the pre-pressing component 8 and the push-flattening component 5 can be conveniently performed simultaneously, namely, after the pre-bending and bending of the tail end of the elastic sheet 3, the tail end of the elastic sheet 3 can be bent and flattened immediately, and the continuity of a processing technology is realized, so that the technology forming efficiency is improved.

During specific operation, the assembly module is manually fed and fixed on the base 71 through the positioning mechanism 72, the second pushing block 82 is driven to displace by the clamping jaw air cylinder 81, the pre-pressing protrusion 832 of the pre-pressing block 83 pre-presses the tail end of the spring sheet 3, the first pushing block 52 is pushed by the first linear push rod 51 to displace, the push knife 522 pushes the pre-bent tail end of the spring sheet 3 flat, and finally the second linear push rod 61 pushes the punching block 62, so that the punching protrusion 622 forms a stepped bending structure after secondarily bending the tail end of the spring sheet 3, and the shell 1 and the spring sheet 3 of the assembly module are rapidly shaped at one time.

Further, as shown in connection with fig. 9 and 10, the frame 4 includes a loading table 41. Two opposite rails 43 are arranged on the table top of the feeding table 41, the base 71 is located between the two rails 43, and the base 71 is slidably connected with the rails 43, so that the base 71 can slide on the table top of the feeding table 41. Based on the process molding zone formed by the pre-pressing assembly 8, the flattening assembly 5 and the molding assembly 6, the positioning assembly 7 is moved into or removed from the process molding zone. A chute 411 is arranged on the table top of the feeding table 41, and a limiting plate 711 penetrating through the chute 411 is connected to the bottom of the base 71. A third linear push rod 42 is provided in the loading table 41, and a telescopic end of the third linear push rod 42 is connected to a limiting plate 711. By the arrangement of the structure, the third linear push rod 42 can push the base 71 to displace along the track 43, so as to facilitate the displacement of the assembly module fixed on the positioning assembly 7 to the process molding area, thereby facilitating the taking and placing of the assembly module and the process molding. In addition, by utilizing the limiting structure formed by the limiting plate 711 and the sliding groove 411, the length of the sliding groove 411 can be designed according to the position of the process forming area, so that the assembly module fixed on the positioning assembly 7 is ensured to be displaced to the appointed area, devices are effectively protected, damage to the elastic sheet 3 in the process forming process is reduced, process traces are reduced, and the product quality is ensured.

As described above, the first linear push rod 51, the second linear push rod 61, and the third linear push rod 42 may preferably be an air cylinder, a hydraulic cylinder, an electric push rod, or the like, and the first linear push rod 51, the second linear push rod 61, and the third linear push rod 42 are mounted at the positions corresponding to the frame 4, respectively.

Further, referring back to fig. 4, the punch block 62 is provided with a limit lever 63, so that the limit lever 63 can move up and down along with the up and down movement of the punch block 62, so that the contact between the limit lever 63 and the table surface of the feeding table 41 limits the downward pressing displacement of the punch block 62. By utilizing the limiting structure formed by the limiting rod 63 and the feeding table 41, devices can be effectively protected, punch forming damage is reduced, process traces are reduced, and product quality is ensured.

Further, as shown in connection with fig. 3 and 9, the frame 4 further includes a protective case 44 provided on the table top of the loading table 41. Both the pushing assembly 5 and the forming assembly 6 are disposed in the protection box 44, and a feed port 441 for displacing the base 71 into the protection box 44 is provided on the box wall of the protection box 44. Through the setting of this structure, be convenient for protect each mechanism, and when avoiding the manual work to get the blowing, contact with forming mechanism ensures shell fragment forming device's safety in utilization.

According to the spring plate forming device, the positioning assembly 7, the prepressing assembly 8, the flattening assembly 5 and the forming assembly 6 are arranged, the second pushing block 82 is driven to displace by the clamping jaw air cylinder 81, the prepressing bulge 832 of the prepressing block 83 prepresses the tail end of the spring plate 3, the first pushing block 52 is pushed by the first linear push rod 51 to displace, the push rod 522 is used for flattening the pre-bent tail end of the spring plate 3, and finally the second linear push rod 61 is used for pushing the punching block 62, so that the punching bulge 622 is used for secondarily bending the tail end of the spring plate 3 to form a stepped bending structure, and the shell 1 and the spring plate 3 of the assembly module are formed at one time and rapidly, so that the automation of forming of the spring plate 3 is realized, and the forming efficiency is effectively improved.

It should be understood that the foregoing embodiments are merely illustrative of the technical solutions of the present utility model, and not limiting thereof, and that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art; all such modifications and substitutions are intended to be included within the scope of this disclosure as defined in the following claims.

Claims (10)

1. The utility model provides a shell fragment forming device, is applied to the shaping of bending of shell fragment on the equipment module, its characterized in that: the elastic sheet forming device comprises a frame, a pushing assembly and a forming assembly, wherein the pushing assembly and the forming assembly are arranged on the frame;

The pushing assembly comprises a first linear push rod and a first push block, the first push block is connected with the telescopic end of the first linear push rod, two groups of opposite pushing assemblies are arranged on the rack, a gap for placing an assembly module is formed between the two first push blocks, and when the two first push blocks are mutually close, the tail end of an elastic sheet on the assembly module is inwards bent;

The forming assembly comprises a second linear push rod and a stamping block, wherein the stamping block is connected with the telescopic end of the second linear push rod, and the stamping block is used for enabling the bent tail end of the elastic sheet to be bent for the second time and shaped in a clamping groove of the assembly module.

2. The spring forming apparatus according to claim 1, wherein: the punching block comprises a punching body and two punching protrusions which are arranged on the punching body and are opposite to each other, the punching body is connected with the telescopic end of the second linear push rod, a first punching surface is formed on the punching protrusion, and the punching body is located on the outer side of the punching protrusion and is provided with a second punching surface, so that the tail end of the elastic sheet is bent for the second time to form a stepped bending structure.

3. The spring forming apparatus according to claim 1, wherein: the elastic sheet forming device further comprises a positioning assembly arranged on the frame, the positioning assembly comprises a base and a positioning mechanism arranged on the base, and the positioning mechanism is used for limiting the assembled module.

4. A dome forming apparatus according to claim 3, wherein: the positioning mechanism comprises a positioning seat, a limiting block, a rotating block and a locking block, wherein a positioning groove for placing the assembling module is formed in the positioning seat, the rotating block is rotationally connected with the groove wall on one side of the positioning groove, one end of the limiting block is rotationally connected with the groove wall on the other side of the positioning groove, a limiting bayonet corresponding to the rotating block is formed at the other end of the limiting block, and the locking block is rotationally connected with the rotating block, so that the locking block is used for limiting the rotation of the limiting block.

5. The spring forming apparatus according to claim 4, wherein: the shell fragment forming device is still including setting up pre-compaction subassembly in the frame, pre-compaction subassembly includes clamping jaw cylinder, second ejector pad and pre-compaction piece set up one respectively on two fingers of clamping jaw cylinder the second ejector pad, and two form the clearance that supplies the equipment module to put into between the second ejector pad, the pre-compaction piece sets up on the second ejector pad, the pre-compaction piece is used for making the terminal inwards pre-bending of shell fragment, the second ejector pad with form spacing clearance between the positioning seat.

6. The spring forming apparatus according to claim 5, wherein: the pre-pressing block comprises a pre-pressing body and two pre-pressing protrusions which are arranged on the pre-pressing body oppositely, wherein a pre-pressing space corresponding to the clamping groove is formed between the two pre-pressing protrusions, so that one of the pre-pressing protrusions is used for inwards pre-bending the tail end of the elastic sheet.

7. The spring forming apparatus according to claim 6, wherein: the first push block comprises a push block body and push knives arranged on the push block body, the push knives are positioned above the pre-pressing blocks, and the push knives and the pre-pressing protrusions can respectively correspond to the tail ends of the elastic sheets so as to inwards bend the tail ends of the elastic sheets.

8. A dome forming apparatus according to claim 3, wherein: the frame includes the material loading platform, be provided with two relative tracks on the mesa of material loading platform, the base is located two between the track, just the base with track sliding connection the material loading platform is located offer the spout on the mesa of base downside, and be connected with in the bottom of base and wear to locate limiting plate in the spout, be provided with the third straight line push rod in the material loading platform, the flexible end of third straight line push rod with the limiting plate is connected.

9. The spring forming apparatus according to claim 8, wherein: the stamping block is provided with a limiting rod, so that the contact between the limiting rod and the table top of the feeding table limits the downward pressing displacement of the stamping block.

10. The spring forming apparatus according to claim 8, wherein: the frame is also provided with a protection box arranged on the table top of the feeding table, the leveling component and the forming component are arranged in the protection box, and the wall of the protection box is provided with a feed inlet for the base to move into the protection box.