CN110976739A

CN110976739A - Material conveying mechanism and rivet gun head

Info

Publication number: CN110976739A
Application number: CN201911241735.2A
Authority: CN
Inventors: 凌德超; 曹璨
Original assignee: Suzhou Siwangxi Electromechanical Co ltd
Current assignee: Suzhou Siwangxi Electromechanical Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-04-10

Abstract

The invention relates to a material conveying mechanism and a rivet gun head, wherein the material conveying mechanism comprises: a push assembly that switches between an initial position and a push position; the elastic rotating assembly is abutted against the pushing assembly, and when the pushing assembly is switched from the initial position to the pushing position, the elastic rotating assembly rotates from the first position to the second position; when the pushing assembly is switched from the pushing position to the initial position, the elastic rotating assembly rebounds from the second position to the first position; the ratchet wheel is meshed with the material belt, the ratchet wheel is provided with a first direction and a second direction opposite to the first direction along the circumferential direction, a plurality of clamping positions are arranged on the ratchet wheel in the circumferential direction, and the elastic rotating assembly is clamped with one clamping position of the ratchet wheel; when the elastic rotating assembly rotates from the first position to the second position, the elastic rotating assembly moves along the second direction and is switched to be clamped with the next clamping position; when the elastic rotating assembly rebounds from the second position to the first position, the elastic rotating assembly drives the ratchet wheel to rotate along the first direction, so that the ratchet wheel transmits the material belt.

Description

Material conveying mechanism and rivet gun head

Technical Field

The invention relates to the field of rivet guns, in particular to a material conveying mechanism and a rivet gun head.

Background

The rivet comprises a rivet head and a rivet rod, the rivet connection is a common fixed connection mode in machining, and the rivet has the advantages of low cost, high connection tightness and the like. In the prior art, a riveting machine generally places rivets on positioning holes in a manual mode, and then performs punching riveting by using a device. The mode has high labor intensity and low efficiency, and accidents are caused by the easy misoperation of workers.

Disclosure of Invention

In view of the above, it is desirable to provide a feed mechanism and a rivet gun head.

A feeding mechanism comprising:

a push assembly that switches between an initial position and a push position;

the elastic rotating assembly is abutted against the pushing assembly, and when the pushing assembly is switched from the initial position to the pushing position, the elastic rotating assembly rotates from a first position to a second position; when the pushing assembly is switched from the pushing position to the initial position, the elastic rotating assembly rebounds from the second position to the first position;

the elastic rotating assembly is connected with the material belt in a clamping mode, and the elastic rotating assembly is connected with the material belt in a clamping mode; when the elastic rotating assembly rotates from the first position to the second position, the elastic rotating assembly moves along the second direction and is switched to be clamped with a next clamping position; when the elastic rotating assembly rebounds from the second position to the first position, the elastic rotating assembly drives the ratchet wheel to rotate along a first direction, so that the ratchet wheel transmits the material belt.

In the material conveying mechanism, when the pushing assembly is switched from the initial position to the pushing position, the elastic rotating assembly rotates and switches the clamping position on the ratchet wheel, after the pushing assembly and the elastic rotating assembly reset, the ratchet wheel can rotate by a fixed angle along the first direction, the material belt is moved, the rivets are transmitted to the nailing position, and when the pushing assembly pushes continuously, the rivets are transmitted to the nailing position in sequence. Defeated material mechanism can carry the rivet to the nailing position automatically, has promoted work efficiency, has avoided the workman because of misoperation injured's condition.

In one embodiment, the transfer mechanism further comprises: a bore, the resilient rotating assembly comprising: the swinging block is rotatably arranged on the gun bore, the elastic piece and the clamping component are arranged on the swinging block, the swinging block is abutted against the pushing component, one end of the elastic piece is fixed on the gun bore, and the other end of the elastic piece is connected with the swinging block; the clamping component is clamped at one clamping position of the ratchet wheel.

In one embodiment, the pendulum mass comprises: the two swing parts are coaxially arranged, and the connecting part is connected between the two swing parts, the swing parts are abutted to the pushing assembly, and a gap exists between the connecting part and the ratchet wheel. The connecting part is prevented from contacting with the swinging part when rotating, and the rotation of the ratchet wheel is prevented from being interfered.

In one embodiment, the connecting portion is formed with a mounting portion protruding towards the ratchet direction, a mounting hole is formed in the mounting portion, and the clamping component is arranged in the mounting hole and clamped with the ratchet.

In one embodiment, the clamping position is an arc-shaped groove formed on the ratchet wheel, and the clamping component comprises: the clamping ball is clamped in the arc-shaped groove and can move from one arc-shaped groove to the next arc-shaped groove in the second direction.

In one embodiment, the ratchet wheel comprises a left wheel and a right wheel which are coaxially arranged, arc-shaped grooves are formed in the left wheel and the right wheel, the number of the arc-shaped grooves of the left wheel is the same as that of the arc-shaped grooves of the right wheel, the clamping parts are provided with two clamping balls, the two clamping balls are connected with the two ends of the compression elastic part, and the two clamping balls are embedded into the corresponding two arc-shaped grooves respectively.

In one embodiment, the two swinging parts are respectively provided with a ball hole coaxial with the mounting hole, and the clamping ball is mounted in the mounting hole through the ball hole.

In one embodiment, the pushing assembly comprises: the device comprises a thimble arranged in the gun bore in a sliding manner and a Kunlun column arranged in the gun bore in a sliding manner, wherein the bottom of the Kunlun column is connected with a roller, and the swinging part is provided with an arc-shaped surface abutted against the roller; when the pushing assembly is switched from the initial position to the pushing position, the thimble presses the Kunlun column downwards. Wherein be equipped with the gyro wheel on the Kunlun column, swing portion has the part to be the arcwall face, and the gyro wheel offsets with the arcwall face, is line contact between gyro wheel and the arcwall face, frictional force when can reduce pushing assembly and swing portion relative motion greatly, extension mechanism life-span.

In one embodiment, the swing block and the ratchet wheel are coaxially arranged, and a certain gap is formed between the swing block and the ratchet wheel. A certain gap is formed between the swing block and the ratchet wheel, so that the swing block can be prevented from interfering the rotation of the ratchet wheel.

The invention also discloses a rivet gun head which comprises the material conveying mechanism.

Drawings

FIG. 1 is a schematic view of a feeding mechanism according to an embodiment;

FIG. 2 is a schematic view illustrating an opening of a cover plate of the feeding mechanism according to an embodiment;

FIG. 3 is a schematic view of an embodiment of the pushing assembly in an initial position and the resilient rotating assembly in a first position;

FIG. 4 is a schematic view of an embodiment of the pushing assembly in a pushing position and the elastic rotating assembly in a second position;

FIG. 5 is a schematic diagram of the structure of a pendulum block and a ratchet in one embodiment;

FIG. 6 is a diagram illustrating an internal structure of a feeding mechanism according to an embodiment;

FIG. 7 is a schematic structural view of a ratchet and a latch according to an embodiment;

fig. 8 is a schematic structural diagram of the pushing assembly, the elastic rotating assembly, the material belt and the base according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

A first embodiment of the invention discloses a feed mechanism, typically for use in a rivet gun head, for feeding rivets to a nailing station.

As shown in fig. 1, 2 and 3, the feeding mechanism includes: the gun comprises a gun chamber 1, a pushing assembly 2 arranged in the gun chamber 1, an elastic rotating assembly 3 arranged on the gun chamber 1 and a ratchet wheel 4 arranged in the gun chamber 1. Wherein ratchet 4 and material area 5 meshing, the material is arranged with a plurality of rivets on 5, and after pushing assembly 2 promoted once, ratchet 4 can rotate a fixed angle along a direction, with material area 5 shift position, transmits the rivet to the nailing position, and when pushing assembly 2 promoted in succession, the rivet will transmit to the nailing position in proper order. Automatically, carry the rivet to the nailing position, promoted work efficiency, avoided the workman because of misoperation injured's the condition.

As shown in fig. 3, the pushing assembly 2 is disposed along the vertical direction, the pushing direction of the pushing assembly 2 is also along the vertical direction, and the pushing assembly 2 is pushed downward when the rivet gun nails. The pushing assembly 2 has an initial position and a pushing position, the initial position is higher than the pushing position, and when the rivet gun nails, the pushing assembly 2 is pushed to the pushing position from the initial position. Referring to fig. 2 and 3, the pushing assembly 2 includes a thimble 21 slidably disposed in the bore 1, and a kunlun column 22 slidably disposed in the bore 1, wherein the kunlun column 22 is located below the thimble 21. When the pushing assembly 2 is located at the initial position, as shown in fig. 3, the thimble 21 is higher than the kunlun column 22 and is separated from the kunlun column 22; when the pushing element 2 is switched to the pushing position, as shown in fig. 4, the thimble 21 moves downward to abut against the Kunlun column 22 and drives the Kunlun column 22 to move downward.

The elastic rotating component 3 abuts against the Kunlun column 22 of the pushing component 2, and when the pushing component 2 is switched from the initial position to the pushing position, the Kunlun column 22 drives the elastic rotating component 3 to be switched from the first position to the second position. As shown in fig. 2 and 3, the elastic rotating assembly 3 includes: the present invention relates to a swing block 31 rotatably disposed in a barrel 1, and an elastic member 32 connected between the barrel 1 and the swing block 31, wherein the elastic member 32 is a tension spring in the present embodiment, but the elastic member 32 may be other members. A groove 11 is formed in the gun bore 1, and the upper end of the tension spring is fixed in the upper part of the groove 11; the lower part of the groove 11 penetrates through the gun chamber 1, and the tension spring is connected with the swing block 31 in the gun chamber 1 through the lower part of the groove 11. Pendulum 31 abuts against kunlun column 22 of push assembly 2. In fig. 3, the pushing assembly 2 is in the initial position, the first position of the resilient pivoting assembly 3. As can be seen from the figure, when the pushing assembly 2 is in the initial position, the kunlun column 22 abuts against the pendulum 31, but the pendulum 31 is not acted by the kunlun column 22, and the elastic member 32 is in the relaxed state, which is the first position of the elastic rotating assembly 3. In fig. 4, pushing element 2 is in the pushing position, and elastic rotating element 3 is in the second position, it can be seen that when pushing element 2 is switched to the pushing position, lower kunlun column 22 pushes pendulum 31 to rotate in bore 1, and rotating pendulum 31 stretches one end of elastic element 32, and elastic element 32 is in the stretched state, which is the second position of elastic rotating element 3. With reference to fig. 1 and 2, the cover plate 12 is disposed on the barrel 1, and the cover plate 12 seals the groove 11, so as to prevent the elastic member 32 from being exposed, reduce the probability of damage and rusting of the elastic member 32, and prolong the service life of the elastic member 32. When the rivet gun is started, with reference to fig. 3 and 4, the pushing assembly 2 is switched from the initial position to the pushing position, and the pushing assembly 2 drives the elastic rotating assembly 3 to be switched from the first position to the second position; after the rivet driver completes the nailing, the elastic rotating component 3 is rebounded from the second position to the first position by the elastic force of the elastic component 32, and simultaneously drives the pushing component 2 to return to the initial position.

As shown in fig. 5, the elastic rotating assembly 3 further includes: the clamping component 33 is arranged on the swing block 31, the ratchet wheel 4 is provided with a plurality of clamping positions in the circumferential direction, and the clamping component 33 can be clamped on any one clamping position on the ratchet wheel 4. Referring to fig. 5 and 6, the ratchet 4 has a first direction V1 and a second direction V2 opposite to the first direction V1 in the circumferential direction, and the ratchet 4 is driven in one direction along the first direction V1 to transport the tape 5. The ratchet wheel 4 and the swing block 31 are coaxially arranged, but a certain gap exists between the ratchet wheel 4 and the swing block 31, so that the swing block 31 cannot interfere with the ratchet wheel 4 due to contact when rotating. As shown in fig. 7, the latch member 33 can switch the latching position on the ratchet 4 when moving in the second direction V2; when the engaging member 33 moves in the first direction V1, the engaging position cannot be switched, and the ratchet 4 can be driven to move. When the elastic rotating assembly 3 rotates from the first position to the second position, the rotating direction thereof is the second direction V2, so that the engaging member 33 is switched from the state of engaging with one engaging position to the state of engaging with the next engaging position on the second direction V2, and the ratchet 4 is stationary in the process. When elasticity rotating assembly 3 kick-backs to the first position from the second position, the rotation direction is first direction V1, and joint part 33 can't switch the joint position this moment, and elasticity rotating assembly 3 drives ratchet 4 through joint part 33 and rotates a certain position towards first direction V1, and ratchet 4 drives the material area removal of meshing, realizes once sending the nail.

As shown in fig. 5, the swing block 31 includes: two swing portions 311 of coaxial setting, connect the connecting portion 312 between two swing portions 311, combine fig. 3, swing portion 311 offsets with kunlun column 22 that promotes subassembly 2, wherein is equipped with gyro wheel 221 on the kunlun column 22, and swing portion 311 has the part to be the arcwall face, and gyro wheel 221 offsets with the arcwall face, is line contact between gyro wheel 221 and the arcwall face, frictional force when can reduce the relative motion of promotion subassembly 2 and swing portion 311 greatly, extension mechanism life-span. Referring to fig. 5 and 6, a gap is formed between the connecting portion 312 and the ratchet 4 outside the ratchet 4 to prevent the connecting portion 312 from contacting with the swinging portion 311 when rotating. Ratchet 4 also is formed with two, is left wheel and right wheel respectively, and two ratchet 4 all mesh with material area 5, promote the stability that material area 5 transmitted. The connecting portion 312 protrudes towards the direction of the ratchet 4 to form a mounting portion 3121, the mounting portion 3121 is located between the left wheel and the right wheel, a mounting hole is formed on the mounting portion 3121, and the clamping component 33 is arranged in the mounting hole and clamped with the ratchet 4. Referring to fig. 7, the latch position of the ratchet 4 is an arc groove 41 formed on the ratchet 4, the arc groove 41 is formed inside the ratchet 4, and the latch member 33 includes: the compression elastic piece 332 is positioned in the mounting hole, and the clamping balls 331 at least partially protrude out of the mounting hole, the number of the clamping balls 331 can be one or two, when the number of the clamping balls 331 is 1, one end of the compression elastic piece 332 is fixed, and the other end of the compression elastic piece is connected with the clamping balls 331, so that the clamping balls 331 abut against the arc-shaped groove 41 of the ratchet 4. The arc-shaped groove 41 has a vertex, the vertex has a first arc-shaped surface 441 in the first direction V1, and has a second arc-shaped surface 442 in the second direction V2, the radian of the first arc-shaped surface 441 is greater than that of the second arc-shaped surface 442, and when the snap-in ball 331 moves along the second direction V2 along with the swing block 31, the snap-in ball 331 can roll into the next arc-shaped groove 41 along the second arc-shaped surface 442; when the engaging ball 331 moves along the first direction V1 along with the swing block 31, because the radian of the first arc surface 441 is large, the engaging ball 331 cannot move on the first arc surface 441, and the engaging ball 331 and the arc groove 41 are always in an engaging state, so that the engaging ball 331 moves in the first direction V1 to drive the ratchet 4 to rotate.

Because the angle that the elasticity rotating assembly 3 rotated when switching to the first position from the second position every time is all the same, when pushing away the normal position after subassembly 2 was promoted at every turn, elasticity rotating assembly 3 switched to the first position from the second position, and ratchet 4 rotates certain angle, moves material area 5 certain distance, and the distance that material area 5 moved equals the interval between two adjacent rivets on material area 5.

Preferably, the number of the catching balls 331 in this embodiment is two, and the two catching balls 331 can drive the two ratchets 4 to move more uniformly, so that the movement of the material belt 5 is more stable. Arc-shaped grooves 41 are also formed in the left wheel and the right wheel, and the arc-shaped grooves 41 of the left wheel and the arc-shaped grooves 41 of the right wheel are identical in number and correspond to each other one by one. The compression elastic member 332 is disposed in the mounting hole, and the compression elastic member 332 is a compression spring in this embodiment, but the compression elastic member 332 may be another member having elasticity. The two ends of the compression elastic member 332 are respectively connected with the clamping balls 331 in a welding manner or a ring connection manner; or both ends of the compression elastic member 332 abut against the catching balls 331. The two clamping balls 331 are partially located outside the mounting holes, and the aperture of the mounting holes is larger than the outer diameter of the clamping balls 331, so that the clamping balls 331 can freely enter and exit the mounting holes. The portion of the catching ball 331 located outside the mounting hole is caught in the arc-shaped groove 41, so that the catching ball 331 is not separated from the mounting hole.

It should be noted that, as shown in fig. 5, the swing portion 311 of the swing block 31 is provided with a ball hole 313 coaxial with the mounting hole, an inner diameter of the ball hole 313 is greater than or equal to an inner diameter of the mounting hole, and the snap-in ball 331 can enter the mounting hole through the ball hole 313. If the two catching balls 331 are fixedly coupled to both ends of the compression spring 332, the entire catching member 33 can be fitted into the mounting hole through the ball hole 313.

Combine fig. 1 and fig. 8, 1 below of bore is provided with base 6, bore 1 has an opening, material area 5 gets into from the opening of bore 1 and transmits to base 6 on, apron 12 on the bore 1 extends to the opening and has the limiting plate, the limiting plate is used for injecing the movement track in material area 5, 6 up end of base is formed with the arc arch, and the nailing position is located base 6, the arc arch also is used for guiding the motion in material area 5, make the removal orbit in material area 5 stable, the rivet on the material area 5 can stably stop in the nailing position.

In a riveter, the user typically nails the rivet by pulling the trigger, which has a strip of material 5 in the nailing position on the base 6, and before pulling the trigger, as shown in fig. 3, the pushing assembly 2 is in the initial position and the resilient pivoting assembly 3 is in the first position. The trigger is buckled, acting force is applied to the pushing assembly 2 through a piston rod of the rivet gun head, the pushing assembly 2 moves downwards, a thimble 21 of the pushing assembly 2 presses downwards to push the Kunlun column 22, the pushing assembly 2 reaches a pushing position, the Kunlun column 22 pushes the swing block 31, the swing block 31 rotates and drives the tension spring to stretch, the clamping component 33 moves into another clamping position from one clamping position of the ratchet wheel 4, the elastic pushing assembly 2 is switched to a second position as shown in fig. 4, and the thimble 21 drives out rivets at the nailing position. After the nailing is accomplished once, the user releases the trigger, the piston rod pulling thimble 21 of rivet rifle head, make pushing assembly 2 return to initial position, no longer receive the support of kunlun post 22 on pendulum piece 31 this moment, make the extension spring reset, thereby pulling pendulum piece 31 resets, elasticity runner assembly 3 kick-backs to the second position, jack up kunlun post 22 and thimble 21, make pushing assembly 2 return to initial position in figure 3, drive ratchet 4 through joint part 33 simultaneously and rotate, material area 5 forward transmission certain distance, make next rivet be located the nailing position, for next nailing preparation.

A second embodiment of the invention relates to a rivet gun head comprising a feed conveyor mechanism as in the first embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A defeated material mechanism, its characterized in that includes:

a push assembly that switches between an initial position and a push position;

2. The delivery mechanism of claim 1, further comprising: a bore, the resilient rotating assembly comprising: the swinging block is rotatably arranged on the gun bore, the elastic piece and the clamping component are arranged on the swinging block, the swinging block is abutted against the pushing component, one end of the elastic piece is fixed on the gun bore, and the other end of the elastic piece is connected with the swinging block; the clamping component is clamped at one clamping position of the ratchet wheel.

3. The feed delivery mechanism of claim 2, wherein said rocker comprises: the two swing parts are coaxially arranged, and the connecting part is connected between the two swing parts, the swing parts are abutted to the pushing assembly, and a gap exists between the connecting part and the ratchet wheel.

4. The feeding mechanism as claimed in claim 3, wherein the connecting portion protrudes toward the ratchet wheel to form a mounting portion, the mounting portion has a mounting hole, and the engaging member is disposed in the mounting hole and engages with the ratchet wheel.

5. The feeding mechanism as claimed in claim 4, wherein the engaging portion is an arc-shaped groove formed on the ratchet wheel, and the engaging member comprises: the clamping ball is clamped in the arc-shaped groove and can move from one arc-shaped groove to the next arc-shaped groove in the second direction.

6. The feeding mechanism as claimed in claim 5, wherein the ratchet wheel comprises a left wheel and a right wheel coaxially disposed, each of the left wheel and the right wheel has an arc-shaped slot, the number of the arc-shaped slots of the left wheel is the same as that of the arc-shaped slots of the right wheel, and the engaging member has two engaging balls connected to both ends of the compression elastic member, and the two engaging balls are respectively inserted into the two arc-shaped slots.

7. The feeding mechanism as claimed in claim 6, wherein the two swing portions are each formed with a ball hole coaxial with the mounting hole, and the engagement ball is mounted into the mounting hole through the ball hole.

8. The feed delivery mechanism of claim 3, wherein said pusher assembly comprises: the device comprises a thimble arranged in the gun bore in a sliding manner and a Kunlun column arranged in the gun bore in a sliding manner, wherein the bottom of the Kunlun column is connected with a roller, and the swinging part is provided with an arc-shaped surface abutted against the roller; when the pushing assembly is switched from the initial position to the pushing position, the thimble presses the Kunlun column downwards.

9. The feeding mechanism as claimed in claim 3, wherein the swing block is disposed coaxially with the ratchet wheel, and a gap is formed between the swing block and the ratchet wheel.

10. A rivet gun head comprising a delivery mechanism according to any one of claims 1 to 9.