CN116690162A - Buckling piece feeding mechanism of spring ring assembling machine - Google Patents

Abstract

The application discloses a buckling piece feeding mechanism of a spring ring assembling machine, which comprises a first mounting frame; the feeding guide rail is arranged on the first mounting frame; the material distributing device is arranged at one side of the feeding guide rail; a second mounting frame; the material receiving transfer device is arranged on the second mounting frame and is provided with a pushing channel and a material receiving channel which are mutually communicated; the carry driving device comprises a driving source, a connecting seat and a push rod; the pressing and positioning device is arranged above the tool die holder and comprises a driving and pressing part, a pressing part and a pressing component, the pressing component comprises a loop bar, and positioning press blocks and limiting blocks which are arranged at two ends of the loop bar, and a pressure spring is arranged between the pressing part and the positioning press blocks.

Description

Buckling piece feeding mechanism of spring ring assembling machine

Technical Field

The application relates to the technical field of spring ring assembly equipment, in particular to a buckling piece feeding mechanism of a spring ring assembly machine.

Background

The spring ring is integrally in a circular ring structure and comprises a spring ring main body, a buckling piece, a torsion spring, a rivet and other parts, wherein one end of the spring ring main body is provided with an opening, the heads of the spring ring main body and the buckling piece are respectively provided with a rivet hole, the spring ring main body and the buckling piece can be hinged together through the rivet penetrating through the rivet holes, the tail parts of the spring ring main body and the buckling piece form a normally closed switch buckle capable of opening and closing, a closed loop which can be formed between the spring ring main body and the buckling piece is an elastic buckle, the torsion spring is arranged between the spring ring main body and the buckling piece, the circle of the torsion spring is fixed at the hinge joint of the spring ring main body and the buckling piece through the rivet, and the buckling piece is pressed to enable the buckling piece to compress the torsion spring and rotate relative to the spring ring main body, so that an opening is formed between the spring ring main body and the buckling piece; and then releasing the buckling piece, wherein the buckling piece can restore to the original state under the action of the torsion spring.

Currently, in automatic assembly equipment of spring coils, for example, chinese patent application No. CN202210827581.0, entitled "automatic assembly equipment of spring buckle", and chinese patent application No. CN202310292751.4, entitled "assembly machine of spring coil", all involve pushing fasteners onto a spring coil main body that has been initially assembled with torsion springs at openings, and completing the assembly process of installing fasteners at the openings of the spring coil main body, thereby achieving the closing of the openings. However, the above-described equipment has a complicated structure and high equipment manufacturing cost in the assembly process.

In addition, in the critical action of assembling the fastener to the die holder (the spring coil body with the torsion spring is now located on the die holder), the chinese patent application CN202310292751.4 adopts the following manner (also the manner in which all similar devices on the market are adopted): under the driving of a door seal assembly transverse moving cylinder in a door seal assembly carry component, a door seal carry pushing shovel scoops up the door seal in a door seal material platform, the door seal is pressed on the door seal carry pushing shovel by a door seal carry jacking clamp in a pushing manner, the door seal is fed into a corresponding position of a tool die, the door seal is positioned, and then a door seal in-position lifting stop block floats upwards to limit the door seal in the tool die. "

Therefore, in the critical action, the equipment on the market can directly push the buckling piece to the opening of the spring ring main body, and in the process, the buckling piece can frequently mistakenly touch the torsion spring, so that the torsion spring is misplaced, the assembly accuracy cannot be guaranteed, and the technical problem needs to be improved.

Disclosure of Invention

In order to solve the problems, the application provides a buckling piece feeding mechanism of a spring ring assembling machine.

The technical scheme adopted by the application is as follows: a buckling piece feeding mechanism of a spring ring assembling machine is used for installing a buckling piece on a spring ring main body of a tool die holder, a torsion spring is arranged at the joint of the buckling piece and the spring ring, and the feeding mechanism comprises:

a first mounting frame;

the feeding guide rail is arranged on the first mounting frame, a slideway for conveying the buckling pieces is arranged along the length direction, and a discharge hole is formed in the tail end of the slideway;

the material distributing device is arranged at one side of the feeding guide rail and is used for blocking the buckling piece positioned in the slideway at intervals;

a second mounting frame;

the material receiving transfer device is arranged on the second mounting frame, and is internally provided with a pushing channel and a material receiving channel which are mutually communicated, wherein one side of the material receiving channel is communicated with the discharge port; the carry driving device is arranged on the second mounting frame, comprises a driving source, a connecting seat linked to the driving source and a push rod fixed on the connecting seat, and the push rod is matched and slidingly connected in the pushing channel; compressing and positioning device installs frock die holder top, and link in the main drive source of spring coil kludge, compressing and positioning device includes:

the driving and pressing part is linked with the main driving source and moves up and down along the main driving source;

the pressing part is arranged below the driving pressing part and is positioned right above the spring ring main body;

the jacking assembly comprises a loop bar, and positioning press blocks and limiting blocks which are arranged at two ends of the loop bar, wherein the loop bar slides through the pressing part, the positioning press blocks and the limiting blocks are respectively positioned at two sides of the pressing part, and the positioning press blocks are positioned at one side close to the material receiving channel;

the pressure spring is arranged between the pressing part and the positioning pressing block;

the push rod is used for pushing buckling pieces positioned in the material receiving channel to the tool die holder at intervals.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Preferably, the lower end of the positioning pressing block is lower than the lower end of the pressing part.

Preferably, the pressing part and the positioning pressing block are respectively provided with a mounting hole for mounting the end part of the pressure spring, and the pressure spring is horizontally arranged.

Preferably, the pressing assembly is provided with a positioning state, a semi-positioning state and a separation state, wherein in the positioning state, the pressure spring is in a free state, and the positioning pressing block is pressed down to be right above the torsion spring;

in a semi-positioning state, the pressure spring is in a compression state, and two sides of the positioning pressing block are respectively abutted to the push rod and the pressing part;

in the separated state, the positioning pressing block moves upwards and leaves the torsion spring, and the compression spring is in a free state.

Preferably, the material receiving transfer device comprises a material receiving seat, a material guiding plate used for being matched with the pushing channel and the material receiving channel is arranged above the material receiving seat, and a concave abdication guide opening is formed in one side, close to the material receiving channel, of the material guiding plate.

Preferably, the material receiving seat is provided with a material pressing device, and the material pressing device comprises:

a third cylinder fixedly arranged below the material receiving seat,

the vertical sliding rod is linked with the cylinder shaft of the third cylinder and vertically slides through the material receiving seat; the material pressing block is arranged above the vertical sliding rod and is positioned above the material receiving seat, a downward extending downward protruding position is arranged on the material pressing block, and the downward protruding position is positioned above the material receiving channel.

Preferably, the second mounting frame includes:

the main support is arranged above the rack of the spring assembling machine;

the transverse connection plate is fixed on the main support and positioned below the material receiving transfer device;

the vertical plate is fixed on the transverse plate, and the tail end of the feeding guide rail and the material receiving seat are fixedly arranged on the vertical plate.

Preferably, the driving source is a second cylinder, and the second cylinder is fixedly installed on one side of the main support.

More preferably, the material distributing device comprises:

the connecting seat is fixedly arranged on the feeding guide rail, and a sliding groove is formed in the connecting seat in a penetrating manner;

the first cylinder is fixed on the connecting seat;

the transverse moving block is linked with the cylinder shaft of the first cylinder;

the guide block is slidingly connected in the chute, one end of the guide block is connected with the transverse moving block, and one side of the guide block is sequentially provided with a front convex position, a concave position and a rear convex position along the conveying direction of the buckling piece;

the fixing sleeve is arranged above the connecting seat, a front sliding arm and a rear sliding arm are sequentially arranged on the fixing sleeve in a sliding manner along the conveying direction of the buckling piece, the front sliding arm and the rear sliding arm are mutually spaced, and one end of the front sliding arm extends to the guide block;

the front material dividing plate is arranged above the front sliding arm;

the rear material separating sheet is arranged above the rear sliding arm;

the limiting baffle is arranged on one side of the connecting seat, which is far away from the transverse moving block;

springs are arranged between the front sliding arm and the limit baffle plate and between the rear sliding arm and the limit baffle plate;

the front material dividing sheets and the rear material dividing sheets are inserted into the slide way at intervals.

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

1. the whole structure is compact, on the premise of ensuring stable and high-speed conveying of the buckling pieces, the mechanical structure related to the equipment is relatively simple, the manufacturing cost is low, the control is easy, and the failure rate is low;

2. in the process of assembling the buckling piece into the opening of the spring ring, in order to ensure that the components such as the spring ring main body and the torsion spring are not loosened in the assembling process, the action of compacting the spring ring is generally set, and in the process of performing the action, the pressing assembly is designed, so that the torsion spring can be always kept to be compacted and positioned at the rivet hole in the process of pushing and assembling the buckling piece into the opening of the spring ring, the assembling of the buckling piece is not influenced, the shock resistance of a workpiece is improved, and the assembling stability and the yield are high.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a left side view overall block diagram of an embodiment of the present application with a compression positioning device removed;

FIG. 2 is a diagram showing the overall construction of a right side view with the compression positioning device removed in accordance with one embodiment of the present application;

FIG. 3 is a block diagram showing the whole structure after removing the compressing and positioning device and the receiving base according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a structure in which a push rod is in an un-pushed state and a compressing and positioning device is in a positioning state according to an embodiment of the present application;

FIG. 5 is a schematic illustration of a push rod pushing and assembling a fastener into an opening of a spring coil and a compression positioning device in a semi-positioning state according to an embodiment of the present application;

FIG. 6 is a schematic illustration of a push rod pushing fasteners and about to be assembled into openings of spring coils and a compression positioning device in a positioned state according to an embodiment of the present application;

FIG. 7 is a schematic illustration of the structure of the fastener of the present application shown with the compression positioning device removed and the push rod pushing and assembling the fastener into the opening of the spring coil;

FIG. 8 is an enlarged view of part A of FIG. 3;

FIG. 9 is an enlarged view of part B of FIG. 4;

FIG. 10 is an enlarged view of part C of FIG. 5;

FIG. 11 is an enlarged partial view of portion D of FIG. 6;

FIG. 12 is an enlarged partial view of the portion E of FIG. 7;

fig. 13 is an overall structure diagram of a material distributing device according to an embodiment of the present application.

The reference numerals in the drawings are: the device comprises an a-buckling piece, a b-spring ring main body, a 10-first mounting frame, a 20-feeding guide rail, a 21-slideway, a 22-blanking opening, a 30-distributing device, a 31-first cylinder, a 32-traversing block, a 33-connecting seat, a 34-guiding block, a 341-concave position, a 342-front convex position, a 343-rear convex position, a 35-front sliding arm, a 36-rear sliding arm, a 37-front distributing piece, a 38-rear distributing piece, a 39-limiting baffle, a 310-fixing sleeve, a 40-second mounting frame, a 41-main support, a 42-transverse plate, a 43-vertical plate, a 50-carry driving and pressing device, a 51-second cylinder, a 52-connecting seat, a 53-push rod, a 60-receiving and transferring device, a 61-receiving seat, a 62-guide plate, a 621-yielding guide opening, a 63-push channel, a 64-receiving channel, a 70-pressing device, a 71-third cylinder, a 72-vertical plate, a 73-pressing block, a downward pressing convex position, an 80-pressing device, an 81-pressing device, a 81-driving and a 82-pressing part, a 82-driving and a clamping part, a 82-holding part, a mounting hole, a 831, a pressing device, a pressing rod and a pressing rod, a mounting hole, a position and a pressing device, a 832-pressing device, a pressing and a pressing bar and a fixture assembly.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

Specific embodiments: referring to fig. 1-13, the application is a fastener feeding mechanism of a spring coil assembling machine, for installing a fastener a on a spring coil main body b of a tool die holder 90, a torsion spring is arranged at the joint of the fastener a and the spring coil, and the feeding mechanism comprises:

a first mounting frame 10;

the feeding guide rail 20 is arranged on the first mounting frame 10, a slideway 21 for conveying the buckling piece a is arranged along the length direction, and a discharge hole is arranged at the tail end of the slideway 21;

the distributing device 30 is arranged at one side of the feeding guide rail 20 and is used for blocking the buckling piece a positioned in the slideway 21 at intervals;

a second mounting frame 40;

the material receiving transfer device 60 is arranged on the second mounting frame 40, and a pushing channel 63 and a material receiving channel 64 which are mutually communicated are arranged in the material receiving transfer device 60, wherein one side of the material receiving channel 64 is communicated with a discharge hole;

carry driving device 50, which is installed on second installation frame 40 and comprises a driving source, a connecting seat 52 linked with the driving source, and a push rod 53 fixed on connecting seat 52, wherein push rod 53 is matched and slidingly connected in push channel 63;

the compressing and positioning device 80 is installed above the tooling die holder 90 and is linked with a main driving source of the spring ring assembling machine, and the compressing and positioning device 80 comprises:

a driving and pressing part 81 linked with the main driving source and moving up and down;

a pressing part 82 installed below the driving part 81 and located right above the coil body b;

the jacking component 83 comprises a sleeve rod 831, and a positioning press block 832 and a limiting block 833 which are arranged at two ends of the sleeve rod 831, wherein the sleeve rod 831 slides through the pressing part 82, the positioning press block 832 and the limiting block 833 are respectively positioned at two sides of the pressing part 82, and the positioning press block 832 is positioned at one side close to the material receiving channel 64;

a compression spring 84 mounted between the press grip 82 and a positioning press 832;

the push rod 53 is used for pushing the fastener a located in the material receiving channel 64 to the tooling die holder 90 at intervals. As a preferred embodiment of this example, the lower end of positioning press block 832 is lower than the lower end of press grip 82. Referring to fig. 6 and 11, it can be seen that in this embodiment, the holding portion 82 and the positioning pressing block 832 are respectively provided with a mounting hole 821 for mounting an end portion of the compression spring 84, and the compression spring 84 is horizontally disposed.

The jacking assembly 83 is then provided with a positioned state, a semi-positioned state, and a separated state, wherein,

in the positioned state, the compression spring 84 is in a free state and the positioning press block 832 is pressed down to just above the torsion spring;

in the semi-positioning state, the compression spring 84 is in a compressed state, and both sides of the positioning press block 832 are respectively abutted to the push rod 53 and the pressing portion 82;

in the disengaged condition, positioning press 832 moves up and away from torsion spring, and compression spring 84 is in a free state.

Referring to FIGS. 4 and 9, it can be seen that the biasing assembly 83 is in a disengaged condition prior to pushing fastener a through the push rod 53 to the opening of the coil. In fact, it is possible that the die holder 90 is not rotated by the split plate of the spring coil assembly machine directly below the hold down positioning device 80 at this time, and for convenience of description, the default die holder 90 has been rotated by the split plate directly below the hold down positioning device 80.

Referring to fig. 6 and 11, it can be seen that when the push rod 53 is about to push the fastener a to the opening of the spring coil (when the fastener a does not enter the opening of the spring coil), the main driving source of the spring coil assembling machine drives the driving and pressing portion 81 to move down to the lowest position, and the pressing portion 82 presses the spring coil (positions the spring coil located on the tooling die holder 90), at this time, the pressing assembly 83 is in a positioning state, and the positioning pressing block 832 is directly above the torsion spring and presses the torsion spring to position the torsion spring.

Referring to fig. 5 and 10, it can be seen that during the pushing of clasp a into the opening of the spring coil by push rod 53, clasp a will abut against detent pressure block 832 and continue to push detent pressure block 832 forward and against pressure grip 82, with pressure spring 84 in a compressed state. Note that during the entry of clasp a into the opening of the spring ring, detent press 832 and clasp a are always in abutment and cooperate to press against the torsion spring so that the torsion spring does not loosen or displace due to pushing of clasp a. Therefore, after the buckling piece a is assembled into the opening of the spring ring, the torsion spring is accurately positioned at the position of the rivet hole, and dislocation cannot occur.

When the fastener a is completely assembled into the opening of the spring coil, the main driving source of the spring coil assembling machine drives the driving and pressing part 81 to move upwards, the positioning press block 832 is separated from the abutting state of the fastener a, the pressing assembly 83 is switched to the separated state, and at the same time, the driving source of the carry driving and pressing device 50 drives the push rod 53 to reset to enter the next assembling action of the fastener a.

As another preferred embodiment of the present embodiment, referring to fig. 3 and 8, it can be seen that the receiving and transferring device 60 includes a receiving seat 61, a guide plate 62 for forming a pushing channel 63 and a receiving channel 64 in a matching manner is disposed above the receiving seat 61, and a concave yielding guide hole 621 is disposed on one side of the guide plate 62 close to the receiving channel 64. Here, since the fastener a is arc-shaped, the concave yielding guide 621 is mainly configured to fit the fastener a and just fit into the receiving channel 64.

Referring to fig. 3, 7 and 12, it can be seen that the material receiving seat 61 is provided with a material pressing device 70, and the material pressing device 70 includes:

a third cylinder 71, fixedly installed below the receiving seat 61,

the vertical sliding rod 72 is linked with the cylinder shaft of the third cylinder 71 and vertically slides through the material receiving seat 61;

the presser block 73 is arranged above the vertical slide rod 72 and is positioned above the material receiving seat 61, the presser block 73 is provided with a downward extending downward protruding position 731, and the downward protruding position 731 is positioned above the material receiving channel 64.

In this embodiment, in the process that the end of the push rod 53 enters the material receiving channel 64 and conveys the fastener a to the side close to the tooling die holder 90, the third cylinder 71 drives the pressing block 73 to press down through the vertical slide rod 72, and the downward protruding position 731 on the pressing block 73 enters the material receiving channel 64 and presses the fastener a, so as to prevent the fastener a from rotating during the pushing process by the push rod 53. Here, if fastener a is rotated, the subsequent assembly of fastener a and the opening of coil body b is affected.

As another preferred implementation of the present embodiment, the second mounting frame 40 includes:

a main support 41 installed above the frame of the spring assembling machine;

a transverse connection plate 42 fixed on the main support 41 and positioned below the material receiving transfer device 60;

the vertical plate 43 is fixed on the transverse plate 42, and the tail end of the feeding guide rail 20 and the receiving seat 61 are fixedly arranged on the vertical plate 43.

In the present embodiment, the driving source is a second cylinder 51, and the second cylinder 51 is fixedly installed at the side of the main support 41. More specifically, referring to fig. 1 and 13, the material separating device 30 includes:

the connecting seat 33 is fixedly arranged on the feeding guide rail 20, and a chute is penetrated through the connecting seat 33;

a first cylinder 31 fixed to the connection base 33;

a traverse block 32 linked to the cylinder shaft of the first cylinder 31;

the guide block 34 is slidingly connected in the chute, one end of the guide block 34 is connected with the transverse moving block 32, and one side of the guide block 34 is sequentially provided with a front convex position 342, a concave position 341 and a rear convex position 343 along the conveying direction of the fastener a;

the fixed sleeve 310 is arranged above the connecting seat 33, a front sliding arm 35 and a rear sliding arm 36 are sequentially arranged on the fixed sleeve 310 in a sliding manner along the conveying direction of the buckling piece a, the front sliding arm 35 and the rear sliding arm 36 are mutually spaced, and one end of the fixed sleeve extends to the guide block 34;

a front distributing piece 37 mounted above the front slide arm 35;

a rear distribution plate 38 mounted above the rear slide arm 36;

the limit baffle 39 is arranged on one side of the connecting seat 33 far away from the transverse moving block 32;

springs are arranged between the front sliding arm 35 and the limit baffle 39 and between the rear sliding arm 36 and the limit baffle 39; the front and rear dividing sheets 37, 38 are inserted into the slide 21 at intervals.

The working principle of the material distributing device 30 is as follows: the first cylinder 31 drives the guide block 34 to slide in the sliding groove of the connecting seat 33 through the lateral moving block 32, and since one side of the guide block 34 is sequentially provided with a front convex position 342, a concave position 341 and a rear convex position 343 along the conveying direction of the fastener a. The conveying direction of the fastening member a is set to be the forward direction, and the direction opposite to the forward direction is set to be the reverse direction. When the guide block 34 is displaced in the reverse direction, the end of the front slider arm 35 transitions from the front convex position 342 to the concave position 341, and the end of the rear slider arm 36 transitions from the concave position 341 to the rear convex position 343. Since the front split piece 37 is mounted on the front slide arm 35 and the rear split piece 38 is mounted on the rear slide arm 36, at this time, the spring between the front slide arm 35 and the limit stopper 39 is switched to a natural state, and the spring between the rear slide arm 36 and the limit stopper 39 is switched to a compressed state, so that the front split piece 37 is inserted into the slide 21, and the rear split piece 38 is separated from the slide 21.

When the guide block 34 is displaced in the forward direction, the end of the front slider arm 35 transitions from the concave position 341 to the front convex position 342, and the end of the rear slider arm 36 transitions from the rear convex position 343 to the concave position 341. Similarly, at this time, the spring between the front slider arm 35 and the limit stopper 39 is switched to a compressed state, and the spring between the rear slider arm 36 and the limit stopper 39 is switched to a natural state, so that the rear split sheet 38 is inserted into the slide 21, and the front split sheet 37 is separated from the slide 21.

In summary, the first cylinder 31 drives the guide block 34 to slide back and forth in the sliding groove of the connecting seat 33 through the lateral sliding block 32, so as to drive the front material dividing sheet 37 and the rear material dividing sheet 38 to be inserted into the sliding rail 21 at intervals, and the material dividing action on the fastening piece a is completed.

The above-mentioned fastener feeding mechanism of the spring coil assembling machine is only a preferred embodiment of the application, and is not limited to the patent scope of the application, and all equivalent structural changes made by the description and the drawings of the application or direct/indirect application in other related technical fields are included in the patent protection scope of the application under the inventive concept of the application.

Claims (9)

1. A buckling piece feeding mechanism of a spring ring assembling machine is used for installing a buckling piece on a spring ring main body of a tool die holder, and a torsion spring is arranged at the joint of the buckling piece and the spring ring, and is characterized in that the feeding mechanism comprises:

a first mounting frame;

the feeding guide rail is arranged on the first mounting frame, a slideway for conveying the buckling pieces is arranged along the length direction, and a discharge hole is formed in the tail end of the slideway;

the material distributing device is arranged at one side of the feeding guide rail and is used for blocking the buckling piece positioned in the slideway at intervals;

a second mounting frame;

the material receiving transfer device is arranged on the second mounting frame, and is internally provided with a pushing channel and a material receiving channel which are mutually communicated, wherein one side of the material receiving channel is communicated with the discharge port;

the carry driving device is arranged on the second mounting frame, comprises a driving source, a connecting seat linked to the driving source and a push rod fixed on the connecting seat, and the push rod is matched and slidingly connected in the pushing channel;

the compressing and positioning device is installed above the tool die holder and is linked with a main driving source of the spring ring assembling machine, and the compressing and positioning device comprises:

the driving and pressing part is linked with the main driving source and moves up and down along the main driving source;

the pressing part is arranged below the driving pressing part and is positioned right above the spring ring main body;

the jacking assembly comprises a loop bar, and positioning press blocks and limiting blocks which are arranged at two ends of the loop bar, wherein the loop bar slides through the pressing part, the positioning press blocks and the limiting blocks are respectively positioned at two sides of the pressing part, and the positioning press blocks are positioned at one side close to the material receiving channel;

the pressure spring is arranged between the pressing part and the positioning pressing block;

the push rod is used for pushing buckling pieces positioned in the material receiving channel to the tool die holder at intervals.

2. The fastener feeding mechanism of a spring coil assembling machine as recited in claim 1, wherein a lower end of the positioning press block is lower than a lower end of the press-holding portion.

3. The fastener feeding mechanism of a spring coil assembling machine according to claim 2, wherein the pressing part and the positioning pressing block are respectively provided with a mounting hole for mounting the end part of the pressure spring, and the pressure spring is horizontally arranged.

4. The fastener feeding mechanism of a spring coil assembling machine as recited in claim 3, wherein the pressing assembly has a positioning state, a semi-positioning state and a separated state, wherein,

in a positioning state, the pressure spring is in a free state, and the positioning pressing block is pressed down to be right above the torsion spring; in a semi-positioning state, the pressure spring is in a compression state, and two sides of the positioning pressing block are respectively abutted to the push rod and the pressing part;

in the separated state, the positioning pressing block moves upwards and leaves the torsion spring, and the compression spring is in a free state.

5. The fastener feeding mechanism of a spring coil assembling machine according to any one of claims 1-4, wherein the receiving transfer device comprises a receiving seat, a guide plate for cooperatively forming the pushing channel and the receiving channel is arranged above the receiving seat, and a concave yielding guide opening is arranged on one side of the guide plate, which is close to the receiving channel.

6. The fastener feeding mechanism of a spring coil assembly machine as recited in claim 5, wherein said receiving base is provided with a pressing device, said pressing device comprising:

a third cylinder fixedly arranged below the material receiving seat,

the vertical sliding rod is linked with the cylinder shaft of the third cylinder and vertically slides through the material receiving seat;

the material pressing block is arranged above the vertical sliding rod and is positioned above the material receiving seat, a downward extending downward protruding position is arranged on the material pressing block, and the downward protruding position is positioned above the material receiving channel.

7. The fastener feed mechanism of a spring coil assembly machine as recited in claim 1, wherein the second mounting bracket comprises:

the main support is arranged above the rack of the spring assembling machine;

the transverse connection plate is fixed on the main support and positioned below the material receiving transfer device;

the vertical plate is fixed on the transverse plate, and the tail end of the feeding guide rail and the material receiving seat are fixedly arranged on the vertical plate.

8. The fastener feed mechanism of a coil assembly machine as recited in claim 7, wherein the drive source is a second cylinder fixedly mounted to one side of the main support.

9. The fastener feed mechanism of a spring coil assembly machine as recited in claim 1, wherein the dispensing means comprises:

the connecting seat is fixedly arranged on the feeding guide rail, and a sliding groove is formed in the connecting seat in a penetrating manner;

the first cylinder is fixed on the connecting seat;

the transverse moving block is linked with the cylinder shaft of the first cylinder;

the guide block is slidingly connected in the chute, one end of the guide block is connected with the transverse moving block, and one side of the guide block is sequentially provided with a front convex position, a concave position and a rear convex position along the conveying direction of the buckling piece;

the fixing sleeve is arranged above the connecting seat, a front sliding arm and a rear sliding arm are sequentially arranged on the fixing sleeve in a sliding manner along the conveying direction of the buckling piece, the front sliding arm and the rear sliding arm are mutually spaced, and one end of the front sliding arm extends to the guide block;

the front material dividing plate is arranged above the front sliding arm;

the rear material separating sheet is arranged above the rear sliding arm;

the limiting baffle is arranged on one side of the connecting seat, which is far away from the transverse moving block;

springs are arranged between the front sliding arm and the limit baffle plate and between the rear sliding arm and the limit baffle plate;

the front material dividing sheets and the rear material dividing sheets are inserted into the slide way at intervals.