阅读说明：本技术 一种相框背板连接钉、制造工艺及冲切模具 (Photo frame back plate connecting nail, manufacturing process and punching die ) 是由 李俊纬 于 2020-07-14 设计创作，主要内容包括：本发明公开一种相框背板连接钉、制造工艺及冲切模具,其中的连接钉包括用于插入相框背板的装订部和用于与固定件连接的安装部,所述装订部中空设置,所述安装部连接在所述装订部的顶部；其中,所述装订部包括尖刺段和扩展段,所述尖刺段上设有多个尖刺,所述扩展段的上端与所述安装部连接,所述扩展段的下端与所述尖刺段的上端连接,所述扩展段的直径比尖刺段的直径大。本发明的连接钉在装订时能让背板废料顺利往上排出,有利于降低装订难度,并且装订效果好。(The invention discloses a photo frame backboard connecting nail, a manufacturing process and a punching die, wherein the connecting nail comprises a binding part and an installation part, the binding part is used for being inserted into a photo frame backboard, the installation part is used for being connected with a fixing piece, the binding part is arranged in a hollow mode, and the installation part is connected to the top of the binding part; the binding part comprises a spine section and an extension section, a plurality of spines are arranged on the spine section, the upper end of the extension section is connected with the mounting part, the lower end of the extension section is connected with the upper end of the spine section, and the diameter of the extension section is larger than that of the spine section. The connecting nail of the invention can discharge the waste material of the back plate upwards smoothly during binding, is beneficial to reducing the binding difficulty and has good binding effect.)

1. The photo frame back plate connecting nail is characterized by comprising a binding part and a mounting part, wherein the binding part is used for being inserted into a photo frame back plate, the mounting part is used for being connected with a fixing piece, the binding part is arranged in a hollow mode, and the mounting part is connected to the top of the binding part; the binding part comprises a spine section and an extension section, a plurality of spines are arranged on the spine section, the upper end of the extension section is connected with the mounting part, the lower end of the extension section is connected with the upper end of the spine section, and the diameter of the extension section is larger than that of the spine section.

2. The picture frame backboard connecting nail as claimed in claim 1, wherein the connection between the lower end of the expansion section and the upper end of the spine section is rounded.

3. The picture frame backboard connecting nail of claim 1, wherein the four spikes on the spike section are arranged at equal intervals along the circumferential direction.

4. The picture frame backboard connecting nail of claim 1, wherein the spine of the spine section extends gradually outward from top to bottom along the direction of insertion of the spine section into the picture frame backboard.

5. The picture frame backboard connecting nail as claimed in claim 1, wherein the mounting portion is provided with a locking groove for connecting and mounting with the fixing member.

6. The picture frame back plate connecting nail as claimed in claim 5, wherein the mounting portion comprises a snap ring and a set of limit blocks; the clamping ring is arranged at the top of the expansion section, and the outer diameter of the clamping ring is larger than that of the expansion section; the limiting block group comprises a plurality of limiting blocks which extend outwards along the radial direction, the limiting blocks are arranged below the clamping ring, and the locking grooves are formed between the limiting blocks and the clamping ring.

7. The picture frame back plate connecting nail as claimed in claim 5, wherein the stopper is a stacked block extruded from the extension section, and the stacked block is formed by scraping and extruding the cutter from bottom to top on the outer circumferential surface of the extension section.

8. The picture frame backboard connecting nail as claimed in claim 6 or 7, wherein the number of the limiting blocks of the limiting block set is 2-10, and the limiting blocks are axisymmetrically arranged on the outer circular surface of the expansion section.

9. The manufacturing process of the photo frame back plate connecting nail is characterized by comprising the following steps of:

(1) placing a base material sheet to be processed on a feeding mechanism, wherein the feeding mechanism drives the base material sheet to sequentially pass through a plurality of groove stamping stations, so that a plurality of groove bodies arranged at equal intervals are formed on the base material sheet;

(2) the feeding mechanism continuously drives the substrate sheet material to move forwards to a punching station, and punching of the sharp pricks is carried out, so that a punching body connected to the substrate sheet material is formed; the processing device at the punching station comprises a pyramid punching cutter and a shaping female die arranged below a substrate sheet, wherein the shaping female die comprises a holding section and a contraction section, the holding section is connected above the contraction section, the inner diameter of the holding section is matched with the outer diameter of a groove body, and the inner diameter of the contraction section is smaller than that of the holding section; when the punching cutter is used for punching the groove body from top to bottom in the groove body, the side wall of the lower part of the groove body is cut by a plurality of cutting edges on the punching cutter to form a plurality of independent sharp spines, and when the punching cutter continuously moves downwards, the cut sharp spines are extruded outwards in the contraction section to realize the expansion of the sharp spines, so that a sharp spine section matched with the inner diameter of the contraction section is formed, meanwhile, the upper part of the groove body is positioned in the holding section, the inner diameter of the groove body is kept unchanged, so that an expansion section with the diameter larger than that of the sharp spine section is formed, and the punching body is processed;

(3) and finally, under the drive of the feeding mechanism, the punching bodies on the base material sheet materials move to a punching station, a plurality of punching parts are punched and punched out under the action of a punching tool, and the individual connecting nails are formed after the base material sheet materials leave, so that the processing and manufacturing of the photo frame back plate connecting nails are completed.

10. A punching die for a photo frame back plate connecting nail is characterized by comprising a punching cutter and a shaping female die, wherein the punching cutter and the shaping female die are both arranged at a punching station, and the punching cutter is positioned above the shaping female die; the punching cutter is in a pyramid shape, and the side edges of the pyramid form the cutting edge of the punching cutter; the shaping female die comprises a holding section and a contraction section, the holding section is connected above the contraction section, the inner diameter of the holding section is matched with the outer diameter of the groove body, and the inner diameter of the contraction section is smaller than that of the holding section.

Technical Field

The invention relates to a photo frame accessory, in particular to a photo frame back plate connecting nail, a manufacturing process and a punching die.

Background

The photo frame is mainly used for positioning four edges of the photo, is beneficial to protecting the photo from being damaged, and has an attractive effect. The photo frame is usually internally buckled, corresponding photos are placed in a blank position when the photo frame is used, and the positions of the photos are fixed by locking a back plate of the photo frame; the specific locking mode is that the free end of the elastic sheet is clamped at the back of the photo frame by rotating the elastic sheet (or the separation blade) on the back plate, so that the back plate is locked, and the purpose of fixing the photo is achieved. In addition, in the using process of the photo frame, the photo frame is hung up through the hook for appreciation; when the photo frame needs to be hung, the action part of the hook is matched with a hanging piece of a vertical surface (wall) through rotating the hook so as to be hung, and in addition, the purpose of adjusting the photo frame can be achieved through adjusting the rotating angle of the hook. For the photo holder frame can normally use, the elastic sheet and the hook are connected with the photo holder frame back plate through the connecting nail, and the elastic sheet and the hook can rotate to move, so that a user can use the photo holder frame.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a photo frame back plate connecting nail which can enable back plate waste materials to be smoothly discharged upwards during binding, is beneficial to reducing the binding difficulty and has a good binding effect.

The invention also aims to provide a manufacturing process of the connecting nail of the back plate of the photo frame.

The invention further aims to provide a punching die for the connecting nail of the back plate of the photo frame.

The purpose of the invention is realized by the following technical scheme:

the photo frame back plate connecting nail is characterized by comprising a binding part and a mounting part, wherein the binding part is used for being inserted into a photo frame back plate, the mounting part is used for being connected with a fixing piece, the binding part is arranged in a hollow mode, and the mounting part is connected to the top of the binding part; the binding part comprises a spine section and an extension section, a plurality of spines are arranged on the spine section, the upper end of the extension section is connected with the mounting part, the lower end of the extension section is connected with the upper end of the spine section, and the diameter of the extension section is larger than that of the spine section.

The working principle of the photo frame backboard connecting nail is as follows:

the mounting part is connected with the elastic sheet or the hook or other rotating parts, so that a backboard fixing part is formed. When binding, the binding part in the connecting nail is pressed on the photo frame back plate through the binding equipment, so that the back plate fixing piece is installed. In the binding process, a spine section in the binding part is firstly inserted into the photo frame back plate, and a back plate waste material is cut out from the photo frame back plate in the spine section inserting process, wherein the back plate waste material is positioned in the spine section; subsequently, the extension section of binding department inserts in the photo holder frame backplate, this moment because the diameter of extension section (including internal diameter and external diameter) is big than the diameter of spine section, the space in the extension section is big than the space of spine section promptly, consequently at extension section insertion process, the backplate waste material that is arranged in the spine section can be extruded gradually and up move and enter into the extension section, again because the inner space of extension section is greater than the waste material, thereby can not produce the resistance to the upward movement of waste material, make the spine section can further pierce more great degree of depth downwards more smoothly, the spine of final spine section is outside buckling, realize with the locking of backplate.

According to a preferable scheme of the invention, the connection part of the lower end of the expansion section and the upper end of the spine section is subjected to fillet treatment.

According to a preferable scheme of the invention, four spikes on the spike section are arranged at equal intervals along the circumferential direction.

According to a preferable scheme of the invention, the spine on the spine section is arranged to extend outwards gradually from top to bottom along the direction that the spine section is inserted into the photo frame backboard.

In a preferred embodiment of the present invention, the mounting portion is provided with a locking groove for connecting and mounting with the fixing member.

According to a preferable scheme of the invention, the mounting part comprises a clamping ring and a limiting block group; the clamping ring is arranged at the top of the expansion section, and the outer diameter of the clamping ring is larger than that of the expansion section; the limiting block group comprises a plurality of limiting blocks which extend outwards along the radial direction, the limiting blocks are arranged below the clamping ring, and the locking grooves are formed between the limiting blocks and the clamping ring.

Preferably, the limiting block is an accumulation block extruded from the expansion section, and the accumulation block is formed by scraping and extruding the cutter from bottom to top on the outer circular surface of the expansion section.

Preferably, the number of the limiting blocks of the limiting block group is 2-10, and the limiting blocks are axisymmetrically arranged on the outer circular surface of the expansion section.

The manufacturing process of the photo frame back plate connecting nail is characterized by comprising the following steps of:

(1) placing a base material sheet to be processed on a feeding mechanism, wherein the feeding mechanism drives the base material sheet to sequentially pass through a plurality of groove stamping stations, so that a plurality of groove bodies arranged at equal intervals are formed on the base material sheet;

(2) the feeding mechanism continuously drives the substrate sheet material to move forwards to a punching station, and punching of the sharp pricks is carried out, so that a punching body connected to the substrate sheet material is formed; the processing device at the punching station comprises a pyramid punching cutter and a shaping female die arranged below a substrate sheet, wherein the shaping female die comprises a holding section and a contraction section, the holding section is connected above the contraction section, the inner diameter of the holding section is matched with the outer diameter of a groove body, and the inner diameter of the contraction section is smaller than that of the holding section; when the punching cutter is used for punching the groove body from top to bottom in the groove body, the side wall of the lower part of the groove body is cut by a plurality of cutting edges on the punching cutter to form a plurality of independent sharp spines, and when the punching cutter continuously moves downwards, the cut sharp spines are extruded outwards in the contraction section to realize the expansion of the sharp spines, so that a sharp spine section matched with the inner diameter of the contraction section is formed, meanwhile, the upper part of the groove body is positioned in the holding section, the inner diameter of the groove body is kept unchanged, so that an expansion section with the diameter larger than that of the sharp spine section is formed, and the punching body is processed;

(3) and finally, under the drive of the feeding mechanism, the punching bodies on the base material sheet materials move to a punching station, a plurality of punching parts are punched and punched out under the action of a punching tool, and the individual connecting nails are formed after the base material sheet materials leave, so that the processing and manufacturing of the photo frame back plate connecting nails are completed.

A punching die for a photo frame back plate connecting nail is characterized by comprising a punching cutter and a shaping female die, wherein the punching cutter and the shaping female die are both arranged at a punching station, and the punching cutter is positioned above the shaping female die; the punching cutter is in a pyramid shape, and the side edges of the pyramid form the cutting edge of the punching cutter; the shaping female die comprises a holding section and a contraction section, the holding section is connected above the contraction section, the inner diameter of the holding section is matched with the outer diameter of the groove body, and the inner diameter of the contraction section is smaller than that of the holding section.

Compared with the prior art, the invention has the following beneficial effects:

1. in the binding part, because the diameter of the expansion section is larger than that of the spine section, namely the space in the expansion section is larger than that of the spine section, the space of the expansion section is looser than that of the spine section, and the extrusion resistance to the backboard waste is smaller, the backboard waste in the spine section can gradually move upwards to the expansion section with larger space in the process of inserting the expansion section into the photo frame backboard; meanwhile, the diameters of the expansion section and the spine section are different, so that the shape with the small lower part and the large upper part is formed, the stress on the backboard waste material is more concentrated in the binding process, and the backboard waste material is easier to move upwards. Therefore, the back board waste materials are upwards discharged along with the insertion of the binding part in the binding process, so that the binding process of the binding part is smoother, the extrusion pressure degree in the binding process is favorably reduced, and the binding difficulty is reduced.

2. In the binding process, because the inner space of the extension section is larger than the waste material cut by the spine section, resistance can not be generated to the upward movement of the waste material, so that the spine section can be further downwards penetrated into a larger depth smoothly during binding, and the spine of the spine section is bent towards the outer side at last, thereby realizing effective locking with the back plate of the photo frame and improving the binding effect.

3. The binding part of the connecting nail is provided with the two expansion sections and the spine sections with different diameters, so that when the connecting nail is matched with the mounting hole of the fixing piece for mounting, the accumulated blocks can be scraped and accumulated on the outer circular surface of the expansion section with larger diameter through the cutter, and the connecting nail is matched with the mounting part to complete the connecting mounting with the fixing piece; through the setting of the great extension section of diameter for it is more convenient with the installation of being connected of mounting, and the selection of connected mode is more, and the flexibility is good.

4. The diameter of the binding part when the binding part is inserted into the photo frame backboard is changed from small to large, so that the extrusion force of the outer wall of the expansion part with the larger diameter to the photo frame backboard is larger, the whole connecting nail can be more stably arranged on the photo frame backboard, and the stability of the connecting nail and the photo frame backboard is further improved.

Drawings

Fig. 1-3 are schematic structural views of a first embodiment of a photo frame back plate connecting nail of the present invention, wherein fig. 1 is a front view (the stack is not formed), fig. 2 is another front view (the stack is formed), and fig. 3 is a front view after the fixing member is installed.

FIG. 4 is a schematic front view illustrating a second embodiment of a connecting nail for a back plate of a photo frame according to the present invention.

FIG. 5 is a schematic process diagram of the manufacturing process of the photo frame backboard connecting nail of the present invention.

FIG. 6 is a schematic front view of a processing mold for connecting nails of a photo frame backboard.

Detailed Description

The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.