CN215697640U - Spring end trimming machine - Google Patents

Abstract

The utility model discloses a spring end trimming machine which is characterized by comprising a cabinet body and a workbench erected on the upper surface of the cabinet body, wherein a telescopic clamp assembly used for clamping a semi-finished extension spring from a spring machine, a control assembly, a left sliding assembly and a right sliding assembly respectively positioned on two sides of the telescopic clamp assembly and a power transmission assembly used for driving the left sliding assembly and the right sliding assembly are arranged on the workbench, the extension spring clamped from the spring machine is clamped and adjusted through the telescopic clamp assembly, so that the extension spring driven by the power transmission assembly is processed by the left sliding assembly and the right sliding assembly, and the problems that a hook is easy to deviate relative to a spring body and the hook and the spring body are broken when the extension spring with large specification is processed in the prior art are solved.

Description

Spring end trimming machine

Technical Field

The utility model relates to the field of spring processing equipment, in particular to a spring end trimming machine.

Background

A spring is a mechanical part that operates by elasticity, is generally made of spring steel, is used for controlling the movement of a machine, relaxing impact or vibration, storing energy, measuring the magnitude of force, and the like, and is widely used in machines and meters. The existing extension spring comprises an integrated spring body and two hooks respectively arranged at two ends of the spring body, when the extension spring is connected, the hooks at the two ends of the spring body are required to be used, and when the extension spring does not bear load, the rings of the extension spring are generally parallel and tight without gaps; as can be seen from the attached drawing 1 in the specification, in order to prevent the hooks from easily coming off from the connecting ends when the extension spring is subjected to spring return after being stressed, the end parts of the two hooks are respectively attached to the two ends of the spring body;

in the processing process, spring steel is fed onto a spring machine, the spring machine is firstly used for processing a hook at one end, then a spring body is processed, and finally another hook is processed and collected, but the processing mode has defects, when the first hook and the second hook are processed, the end part of the first hook is difficult to ensure to be attached to or close to the end surface of the spring body, and aiming at the condition that the end part of the hook is positioned outside the peripheral wall of the spring body, a step of pressing the part exceeding the peripheral wall of the spring body to the center of the spring body is needed to be added, the operation is complicated, when the second hook is processed, the spring body is not fixed, and in the forming process of the second hook, the spring body can rotate to cause the second hook to deviate and incline relative to the central axis surface of the spring body, so that the use quality of the extension spring is influenced; thirdly, as the diameter of the spring steel is increased, the defects of the two points are more obvious, and the bending resistance and the rigidity strength of the spring steel are both enhanced, so that the bent part of the second hook relative to the spring body is easy to break in the processing process, and the material waste is caused, therefore, a device capable of replacing the spring machine to process the second hook is required to be designed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the spring end trimming machine which is high in processing efficiency and can accurately process the second hook of the extension spring.

In order to achieve the purpose, the utility model provides the following technical scheme: a spring end trimming machine comprises a cabinet body and a workbench erected on the upper surface of the cabinet body, wherein a telescopic clamp assembly used for clamping a semi-finished extension spring from the spring machine, a control assembly, a left sliding assembly and a right sliding assembly respectively positioned on two sides of the telescopic clamp assembly and a power transmission assembly used for driving the left sliding assembly and the right sliding assembly are arranged on the workbench;

the telescopic clamp assembly comprises a fixed seat positioned on the workbench, a sliding plate which is limited on the fixed seat and can slide linearly relative to the fixed seat, a pair of clamping pieces hinged on the upper surface of the sliding plate, a sliding block which is positioned below the tail part of the clamping piece and can slide linearly relative to the sliding plate, three pushing pieces which are arranged alternately with the tail parts of the two clamping pieces and are fixed on the sliding block, a first linear air cylinder which is positioned on the sliding plate and is used for driving the sliding block to move, a second linear air cylinder which is fixedly connected below the workbench and can drive the sliding plate to move, a third linear air cylinder which is fixedly connected with the workbench through a bracket and is positioned right above the head end of the clamping piece, and a rotating air cylinder which is fixedly connected on the output shaft of the third linear air cylinder, the tail ends of the clamping pieces are bent outwards towards the two sides of the clamping pieces and are in a splayed shape, the head ends of the clamping pieces are provided with spring holes which can be spliced mutually and the inner walls of which are matched with the extension spring, the spring hole and the rotary cylinder are coaxially arranged, a push sheet extending along the radial direction of the output shaft of the rotary cylinder is arranged on the end face of the output shaft of the rotary cylinder, the first linear cylinder, the second linear cylinder, the third linear cylinder, the rotary cylinder and the power transmission assembly are all connected with the control assembly, the head ends of a pair of clamping pieces are opened and closed under the influence of three pushing pieces by controlling the sliding block to move back and forth through the first linear cylinder, the head ends of the pair of clamping pieces can clamp the extension spring on the spring machine to the position under the rotary motor by driving the sliding plate to move back and forth relative to the spring machine through the second linear cylinder, and the rotary motor is pushed to the extension spring through the third linear motor to drive the extension spring to rotate relative to the spring hole through the push sheet;

the left sliding assembly and the right sliding assembly respectively comprise a sliding seat fixed on a workbench and a sliding rod which is limited on the sliding seat and can move linearly relatively to the sliding seat, two sliding rods are arranged in the moving direction of the sliding plate which is perpendicular to the moving direction of the sliding rod, the right sliding assembly further comprises a limiting part positioned on the sliding rod, the left sliding assembly further comprises a top part positioned on the sliding rod, one end of the top part is provided with a scarf, the top part and the limiting part are respectively positioned on two sides of a pair of clamping parts and correspond to a spring hole, the opposite end parts of the limiting part and the top part are respectively provided with a countersunk groove and a step block which can be mutually spliced, the size of the big end of the countersunk groove is larger than the outer diameter of an extension spring, and the size of the small end of the countersunk groove is smaller than the inner diameter of the extension spring, the sliding rods are driven by a power transmission assembly, and when the extension spring is pushed by a push sheet and limited in the spring hole, the power transmission assembly drives the two sliding rods to move in opposite directions, and the jacking piece jacks up the ring body at the end part of the extension spring through the inclined plane of the jacking piece until the jacked ring body is abutted to the limiting piece.

As a further improvement of the utility model, the power transmission assembly comprises a rotating motor, two parallel auxiliary rotating shafts, a transmission rotating shaft, two fan-shaped left push plates and two fan-shaped right push plates, wherein the rotating motor is arranged in the cabinet body, the output end of the rotating motor sequentially penetrates through the cabinet body and the workbench, the transmission rotating shaft is arranged above the second linear cylinder, the left push plates and the right push plates are fixedly sleeved on the two auxiliary rotating shafts respectively, the rotating motor is electrically connected with the control assembly, the left sliding assembly and the right sliding assembly are arranged between the two auxiliary rotating shafts, the transmission rotating shaft and the one auxiliary rotating shaft are in transmission connection with the output shaft of the rotating motor through a bevel gear, the transmission rotating shaft is in transmission connection with the other auxiliary rotating shaft through the bevel gear, the end parts, far away from the clamping piece, of the two sliding rods are respectively in rotation connection with first rollers which are respectively circumscribed with the left push plates and the right push plates, and two groups of first tension springs, which are not in the same vertical plane with the first rollers, are further arranged on the upper surface of the workbench, two sets of the one end of first extension spring all is located the workstation and the other end keeps away from the tip fixed connection of holder with two slide bars respectively, orders about two supplementary pivots through the rotating electrical machines and rotates simultaneously and make left push pedal and right push pedal can promote two slide bars motion in opposite directions respectively, and two sets of first extension springs are all elongated, resume deformation through two sets of first extension springs and make two slide bars keep away from the motion each other.

As a further improvement of the utility model, the central angle subtended by the arc of the left push plate far away from the auxiliary rotating shaft is smaller than the central angle subtended by the arc of the right push plate far away from the auxiliary rotating shaft, and when the two auxiliary rotating shafts rotate simultaneously, the right push plate moves towards the clamping piece before the left push plate.

As a further improvement of the utility model, clamping pieces parallel to the sliding rod are connected to the two sliding seats in a sliding manner, second rollers are arranged at one ends of the two clamping pieces far away from the clamping piece, fan-shaped clamping push plates are fixedly sleeved on the two auxiliary rotating shafts respectively, the two clamping push plates are respectively circumscribed with the two second rollers, two groups of second tension springs which are not in the same vertical plane with the second rollers are further arranged on the upper surface of the workbench, one ends of the two groups of second tension springs are positioned on the workbench, the other ends of the two groups of second tension springs are respectively and fixedly connected with the end parts of the two clamping pieces far away from the clamping piece, the central angle of the two clamping push plates far away from the auxiliary rotating shafts is larger than that of the right push plate far away from the auxiliary rotating shafts, the two clamping push plates are driven by a rotating motor to rotate simultaneously so that the two clamping pieces are respectively pushed to move towards the clamping piece and clamp the clamping piece before the left push plate and the right push plate, then the left push plate and the right push plate respectively push the two slide bars to move oppositely.

As a further improvement of the utility model, the upper surface of the workbench is provided with two lubricating grooves which are respectively positioned below the two auxiliary rotating shafts, and when the two auxiliary rotating shafts rotate, the left push plate, the right push plate and the two clamping push plates can partially extend into the lubricating grooves below the left push plate, the right push plate and the two clamping push plates.

As a further improvement of the utility model, the control assembly comprises four electromagnetic valves respectively connected with the first linear cylinder, the second linear cylinder, the third linear cylinder and the rotary cylinder through two air pipes, an external cylinder communicated with the four electromagnetic valves and a point contact switch electrically connected with the rotary motor, four fan-shaped pressing pieces and a drop-shaped point pressing piece are sequentially fixedly sleeved on the transmission rotating shaft along the axial direction of the transmission rotating shaft, the four pressing pieces and the point pressing piece deflect different angles relative to the horizontal plane, the point contact switch and the four electromagnetic valves are arranged side by side and respectively correspond to the point pressing pieces and the four pressing pieces, and in the rotating process of the transmission rotating shaft, the point contact switch and the switches on the four electromagnetic valves are alternately pressed by the point pressing pieces and the parts of the four pressing pieces farthest from the transmission rotating shaft, so that the rotary motor, the first linear cylinder and the rotary cylinder, The second linear cylinder, the third linear cylinder and the rotary cylinder are operated in succession.

As a further improvement of the utility model, the left sliding assembly further comprises a hinged seat fixedly connected above the sliding rod, a rotating member in an shape, a lower pressing piece positioned on one side of the hinged seat, a return spring standing on the upper surface of the sliding rod and a pressing wheel rotatably connected on one side of the rotating member, one end of the lower pressing piece in an shape is hinged with the hinged seat and fixedly connected with the top piece, the other end of the lower pressing piece in an shape is positioned above the return spring and is in abutting contact with the upper end of the return spring, the pressing wheel and the lower pressing piece are both positioned at the same side of the rotating piece, the maximum distance between the pressing wheel and the upper surface of the sliding rod is greater than the minimum distance between the lower pressing piece and the upper surface of the sliding rod, when the sliding rod moves towards the clamping piece, the pressing wheel moves to be in contact with the pressing piece, the pressing wheel is pressed downwards by the pressing piece, the return spring is compressed, the rotating piece rotates relative to the hinged base, and the top piece tilts upwards while moving.

As a further improvement of the utility model, the workbench is provided with a blanking hole which is positioned right below the rotating motor, a blanking pipe is obliquely arranged in the cabinet body, an opening at one end of the blanking pipe is positioned on the upper surface of the cabinet body and is arranged corresponding to the blanking hole, and an opening at the other end of the blanking pipe is positioned on one side wall of the cabinet body.

As a further improvement of the utility model, the electric cabinet also comprises a supporting bar fixedly connected with the cabinet body and a first limiting rod positioned on the supporting bar, a top touch rod coaxially arranged with the first limiting rod is arranged on the end surface of the sliding plate far away from the spring machine, and when the top touch rod moves along with the sliding block far away from the spring machine, the first limiting rod is abutted against the top touch rod to stop moving.

As a further improvement of the utility model, the top touch rod is fixedly sleeved with a connecting plate, the connecting plate is fixedly connected with a second limiting rod positioned on one side of the top touch rod, and the workbench is provided with a limiting block capable of preventing the second limiting rod from moving towards the spring machine.

The utility model has the beneficial effects that: the intelligent semi-finished product stretching spring processing machine is characterized in that a workbench is erected on the cabinet body, a stretching clamp assembly used for clamping a semi-finished product stretching spring from a spring machine, a control assembly, a left sliding assembly and a right sliding assembly respectively located on two sides of the stretching clamp assembly and a power transmission assembly used for driving the left sliding assembly and the right sliding assembly are arranged on the workbench, the stretching spring clamped from the spring machine is clamped and adjusted through the stretching clamp assembly, so that the stretching spring is processed by the left sliding assembly and the right sliding assembly under the driving of the power transmission assembly, the intelligent semi-finished product stretching spring processing machine can be provided with a left hook for intelligent processing, and compared with the design that a pair of clamping pieces clamp a spring body, the intelligent semi-finished product stretching spring processing machine can be accurately positioned; compared with the prior art, the hook with the accurate structure can be processed by processing the stepped block and the countersunk groove which can be mutually inserted into the top piece and the limiting piece respectively, so that the feeding amount of the top piece and the limiting piece is fixed, and the defect of breakage of the hook relative to the spring body in the prior art is overcome.

Drawings

FIG. 1 is a schematic perspective view of a left slide assembly and a right slide assembly of the present invention both positioned on a work table;

FIG. 2 is a schematic view of a three-dimensional structure of the telescopic clamp assembly after blanking;

FIG. 3 is a perspective view of the power transmission assembly and control assembly combination of the present invention;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is a front view of the present invention;

FIG. 6 is a top view of the present invention;

fig. 7 is a left side view of the present invention.

Reference numerals: 1. a cabinet body; 11. a blanking pipe; 12. branch; 13. a first limit rod; 2. a work table; 21. a blanking hole; 22. a first tension spring; 23. a lubrication groove; 24. a second tension spring; 25. a limiting block; 3. a telescoping clip assembly; 30. pushing the sheet; 31. a fixed seat; 32. a slide plate; 321. a top feeler lever; 322. a connecting plate; 323. a second limiting rod; 33. a clamping member; 331. a spring hole; 34. a slider; 35. a pusher member; 36. a first linear cylinder; 37. a second linear cylinder; 38. a third linear cylinder; 39. a rotating cylinder; 4. a control component; 41. an electromagnetic valve; 42. an external cylinder; 43. a point contact switch; 5. a left slide assembly; 51. a top piece; 52. a step block; 53. a hinged seat; 54. a rotating member; 55. a push-down member; 56. a return spring; 57. a pinch roller; 6. a right slide assembly; 61. a limiting member; 62. a countersunk groove; 7. a power transmission assembly; 71. a rotating electric machine; 72. an auxiliary rotating shaft; 73. a transmission rotating shaft; 74. a left push plate; 75. a right push plate; 76. clamping the push plate; 77. a pressing member; 78. pressing parts are clicked; 8. a slide base; 9. a slide bar; 91. a first roller; 10. a clamping member; 101. a second roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.

Referring to fig. 1 to 7, the spring end trimming machine of the embodiment includes a cabinet 1 and a workbench 2 erected on the upper surface of the cabinet 1, a gap exists between the upper surface of the cabinet 1 and the lower surface of the workbench 2, a telescopic clamp assembly 3 for clamping a semi-finished extension spring from the spring machine is arranged on the workbench 2, a control assembly 4, a left sliding assembly 5 and a right sliding assembly 6 respectively located at two sides of the telescopic clamp assembly 3, and a power transmission assembly 7 for driving the left sliding assembly 5 and the right sliding assembly 6, wherein the semi-finished extension spring on the spring machine includes a spring body, hooks respectively located at two ends of the spring body, and a semi-ring body coaxially arranged with the axis of the spring body;

the telescopic clamp assembly 3 comprises a fixed seat 31, a sliding plate 32, a pair of clamping pieces 33, a sliding block 34, three cylindrical pushing pieces 35, a first linear air cylinder 36, a second linear air cylinder 37, a third linear air cylinder 38 and a rotary air cylinder 39, wherein the pair of clamping pieces 33 are in shapes, the fixed seat 31 is positioned on the upper surface of the workbench 2 in a bolt fastening mode, the sliding plate 32 is sleeved at the upper end of the fixed seat 31 and can linearly move relative to the fixed seat 31 in a direction parallel to the upper surface of the workbench 2, a movable groove for accommodating and moving the sliding block 34 is formed in the upper surface of the sliding plate 32, the cylinder body of the first linear air cylinder 36 is positioned on the end surface of the sliding plate 32, the output shaft of the first linear air cylinder 36 penetrates through one groove wall of the movable groove and is fixedly connected with the sliding block 34, the second linear air cylinder 37 is fixedly connected below the workbench 2, a through hole with the length parallel to the moving direction of a sliding plate 32 is formed in a workbench 2, a connecting rod penetrates through the through hole, two ends of the connecting rod are respectively and fixedly connected with the sliding plate 32 and an output shaft of a second linear cylinder 37, the bending parts of a pair of clamping pieces 33 are hinged to the upper surface of the sliding plate 32, one ends of the pair of clamping pieces 33 are positioned above a sliding block 34 and are far away from each other to be bent into a splayed shape, parts of the pair of clamping pieces 33 positioned on the other side of the hinge parts are arranged in parallel and are in a closed state, spring holes 331 which can be mutually spliced and have inner wall grains matched with extension springs are respectively arranged at the head ends of the pair of clamping pieces 33, three pushing pieces 35 are fixedly connected to the upper surface of the sliding block 34, the three pushing pieces 35 and the tail ends of the pair of clamping pieces 33 are alternately arranged, and the pair of clamping pieces 33 and the first linear cylinder 36 are arranged on the opposite sides of the end surface of the sliding plate 32 where the first linear cylinder 36 is positioned, the third linear cylinder 38 is positioned on the workbench 2 through a support and is coaxially arranged with the spring hole 331, the rotary cylinder 39 is coaxially arranged on an output shaft of the third linear cylinder 38, a push sheet 30 extending along the radial direction of the output shaft is arranged on the end surface of the output shaft of the rotary cylinder 39, the push sheet 30 is positioned above the spring hole 331, and the first linear cylinder 36, the second linear cylinder 37, the third linear cylinder 38, the rotary cylinder 39 and the power transmission assembly 7 are all connected with the control assembly 4;

the left sliding assembly 5 and the right sliding assembly 6 both comprise a sliding base 8 and a sliding rod 9, the two sliding bases 8 are respectively positioned at two sides of the head ends of a pair of clamping pieces 33, a through groove for the sliding rod 9 to penetrate is formed in the sliding base 8, the moving directions of the two sliding rods 9 are both perpendicular to the moving direction of the sliding plate 32, the right sliding assembly 6 further comprises a limiting piece 61 positioned on the sliding rod 9, the limiting piece 61 is arranged close to the clamping piece 33, the left sliding assembly 5 further comprises a top piece 51 positioned on the sliding rod 9, the top piece 51 and the limiting piece 61 are respectively positioned at two sides of the pair of clamping pieces 33 and are positioned on the same straight line with the spring hole 331, the height of the top piece 51 and the height of the limiting piece 61 are higher than the height of the upper surface of the clamping piece 33, a countersunk groove 62 is respectively dug on the end part of the limiting piece 61 and a stepped block 52 is respectively lathed on the top piece 51 along the direction perpendicular to the upper surface of the workbench 2, the countersunk groove 62 and the stepped block 52 are respectively positioned on the opposite end parts of the limiting piece 61 and the top piece 51 and can be mutually inserted together, a part of the small end of the stepped block 52 facing the end face of the limiting part 61 is cut inwards to form an oblique plane, the bottom edge of the oblique plane is intersected with the lower surface of the stepped block 52, an included angle between the oblique plane and the bottom surface of the stepped block 52 is an acute angle, the size of the large end of the countersunk head groove 62 is larger than the outer diameter of the extension spring, the size of the small end of the countersunk head groove is smaller than the inner diameter of the extension spring, the control component 4 can select an integrated controller, the power transmission component 7 can select two linear motors electrically connected with the integrated controller, the two linear motors are fixed on the workbench 2, and output shafts of the two linear motors are respectively and fixedly connected with the two slide rods 9;

the cabinet body 1 is arranged on the front side of the spring machine, the pair of clamping pieces 33 are opposite to the spring machine and correspond to the discharge hole on the spring machine in position, a collecting barrel can be placed below the spring hole 331, in an initial state, the limiting piece 61 and the top piece 51 are respectively positioned on two sides of the pair of clamping pieces 33, the sliding block 34 is attached to the wall of a movable groove through which the first linear air cylinder 36 penetrates, the two pushing pieces 35 positioned on the outer sides of the tail ends of the pair of clamping pieces 33 are respectively attached to the outer walls of the pair of clamping pieces 33, the pair of clamping pieces 33 are in an open state, the two spring holes 331 are far away from each other, and the spring hole 331 is positioned below the rotary air cylinder 39; after the spring steel is fed to the spring machine and the spring body with a hook is machined, in a first step, the second linear cylinder 37 pushes the sliding plate 32 towards the spring machine until the spring body is located between the two clamping pieces 33 and the spring hole 331 corresponds to the spring body, and the second linear cylinder 37 stops moving; secondly, the first linear cylinder 36 pushes the sliding block 34 to move towards the spring machine, the two pushing pieces 35 positioned on the outer sides of the pair of clamping pieces 33 are separated from the outer walls of the corresponding clamping pieces 33, the pushing piece 35 positioned between the two clamping pieces 33 is firstly attached to the opposite outer walls of the two clamping pieces 33 at the same time, then the tail ends of the two clamping pieces 33 are pushed away towards two sides so that the two clamping pieces 33 rotate relative to the sliding plate 32 until the two spring holes 331 are spliced with each other, the spring body is limited in the two spring holes 331, the two clamping pieces 33 stop rotating, the output shaft of the first linear cylinder 36 cannot extend continuously, and the spring machine cuts off the spring body from unprocessed spring steel; thirdly, the second linear cylinder 37 drives the sliding plate 32 to move away from the spring machine until the spring hole 331 is located right below the rotating motor 39, and the second linear cylinder 37 stops moving; fourthly, the third linear air cylinder 38 pushes the rotary air cylinder 39 downwards until the push plate 30 on the rotary air cylinder 39 is attached to the end part of the spring body, and the third linear air cylinder 38 stops moving; fifthly, the rotating cylinder 39 drives the push plate 30 to rotate by a fixed angle, the push plate 30 firstly abuts against the cut end of the spring body in the moving process, then the spring body is driven to rotate relative to the spring hole 331, the spring body moves towards the spring hole 331, after the spring body rotates in place, the half ring body is positioned outside the spring hole 331 and on one side close to the top piece 51, and the third linear cylinder 38 drives the rotating cylinder 39 to move away from the spring body and simultaneously the rotating cylinder 39 drives the push plate 30 to reset; sixthly, the two linear motors simultaneously drive the two sliding rods 9 to move oppositely, the bottom edge of the small end of the step block 52 is inserted between the adjacent ring bodies of the spring body, along with the movement of the step block 52, the half ring body slides along the oblique section of the step block 52 and is jacked up, the small end of the step block 52 partially penetrates through the half ring body until the step block 52 is spliced with the countersunk head groove 62, the half ring body is clamped between the step block 52 and the countersunk head groove 62, the half ring body is bent in place relative to the spring body and is positioned in a vertical plane, then the two linear motors drive the two sliding rods 9 to be away from each other and reset, and the jacking piece 51 and the limiting piece 61 are separated from each other; seventhly, the first linear cylinder 36 drives the sliding block 34 to move away from the spring machine, the pushing piece 35 located between the two clamping pieces 33 is separated from the two clamping pieces 33, the two pushing pieces 35 located on the outer sides are firstly attached to and pushed by the two clamping pieces 33 respectively, the two clamping pieces 33 rotate relative to the sliding plate 32, the two spring holes 331 are far away from each other, the processed extension spring falls into the collecting barrel, and then the steps are repeated to finish the processing of the next semi-finished extension spring;

the design can provide intelligent processing for the rest hook processed by the semi-finished extension spring, and compared with the design of clamping the spring body by the pair of clamping pieces 33 in the prior art, the design can provide accurate positioning for the semi-finished extension spring; compared with the prior art, the hook with the accurate structure can be processed by respectively processing the step block 52 and the countersunk groove 62 which can be mutually inserted into the top piece 51 and the limiting piece 61, so that the defects that the hook is broken relative to the spring body in the prior art are overcome;

further, it is within the scope of the present invention to replace the first linear cylinder 36, the second linear cylinder 37, the third linear cylinder 38, and the rotary cylinder 39 with corresponding motors by conventional means.

As a modified specific embodiment, referring to fig. 3, 4 and 6, the power transmission assembly 7 includes a rotating motor 71 electrically connected to the control assembly 4, two auxiliary rotating shafts 72, a transmission rotating shaft 73, a left push plate 74 and a right push plate 75, the rotating motor 71 is installed in the cabinet 1, the output shaft of the rotating motor 71 sequentially penetrates through the cabinet 1 and the workbench 2, the output shaft of the rotating motor 71 is perpendicular to the workbench 2 and is engaged with a bevel gear at the end of the output shaft, both the auxiliary rotating shafts 72 are arranged parallel to the moving direction of the slide plate 32, both the left sliding assembly 5 and the right sliding assembly 6 are located between the two auxiliary rotating shafts 72, the transmission rotating shaft 73 is arranged perpendicular to the moving direction of the slide plate 32 and spans above the second linear cylinder 37, both ends of the transmission rotating shaft 73 are rotatably connected to the workbench 2, two bevel gears are keyed on the transmission rotating shaft 73, the end part of the auxiliary rotating shaft 72 arranged on the same side with the rotating motor 71 is provided with a bevel gear, the bevel gear on the transmission rotating shaft 73 is meshed with the bevel gear on the rotating motor 71, the end part of the auxiliary rotating shaft 72 arranged on the opposite side of the rotating motor 71 is provided with a bevel gear meshed with the other bevel gear on the transmission rotating shaft 73, the end parts of the two auxiliary rotating shafts 72 far away from the transmission rotating shaft 73 are rotatably connected with the workbench 2, the outlines of the left push plate 74 and the right push plate 75 are respectively composed of two arcs with different diameters and two straight lines respectively connecting the ends of the two arcs and form a fan-like shape, the left push plate 74 and the right push plate 75 are respectively fixedly sleeved on the two auxiliary rotating shafts 72, the arcs at the two ends are respectively concentric with the auxiliary rotating shaft 72, the diameters of the two arcs of the left push plate 74 and the right push plate 75 are respectively correspondingly the same, the two slide rods 9 are respectively fixedly connected with a support plate, and the support plate is rotatably connected with a first roller 91 on the support plate, the vertical plane where the first rollers 91 are located is located on one side of the sliding rod 9, the peripheral walls of the two first rollers 91 are attached to the peripheral walls of the left push plate 74 and the right push plate 75 respectively, the two groups of first tension springs 22 are arranged below the two auxiliary rotating shafts 72 respectively, a hook is arranged on the upper surface of the workbench 2 and the end surface of the sliding rod 9 far away from the clamping piece 33 and is located in the moving direction of the sliding rod 9, the two ends of the two groups of first tension springs 22 are hooked on the hooks of the workbench 2 and the sliding plate 9 respectively, and the left push plate 74 and the right push plate 75 are not interfered with the first tension springs 22;

the rotating motor 71 drives the transmission rotating shaft 73 and the two auxiliary rotating shafts 72 to rotate simultaneously through the bevel gears, the left push plate 74 and the right push plate 75 roll relative to the corresponding first rollers 91 through circular arcs with small diameters, in the period, the clamping piece 33 finishes clamping the spring body and the rotating cylinder 39 rotates the half ring bodies, the two slide bars 9 are kept static, then one straight line side of the left push plate 74 and the right push plate 75 rolls relative to the corresponding first rollers 91, the two slide bars 9 move in opposite directions, the two groups of first tension springs 22 are elastically deformed and elongated until the circular arcs with large diameters of the left push plate 74 and the right push plate 75 roll relative to the corresponding first rollers 91, the top piece 51 and the limiting piece 61 move in place and process the half ring bodies into hooks, and when the other straight line side of the left push plate 74 and the right push plate 75 rolls relative to the corresponding first rollers 91, compared with the first embodiment, the design has the advantages that two power sources can be reduced to one power source by utilizing the control of two linear motors, the cost is reduced, and the synchronism of the two sliding rods 9 is high; compared with the design of controlling the movement of the two slide bars 9 by using two linear motors, the design of controlling the movement of the two slide bars 9 by using the profile shapes of the left push plate 74 and the right push plate 75 and the two groups of first tension springs 22 can ensure that the movement distance of the slide bars 9 is fixed, the movement of the slide bars 9 during the movement and the stop tends to be smooth, the smoothness of state conversion of the slide bars 9 is high, the programming of the program is simplified, and the error rate of the program is reduced;

further optimized, referring to fig. 3 to 5, since the position of the bending point of the half ring body relative to the spring body is inaccurate and the deformation amount is large when the limiting member 61 and the top member 51 reach the spring hole 331 at the same time, the hook of the processed and formed extension spring has a different structure and the bending point is easily broken after being bent and rolled for a plurality of times, in order to solve the problem, the central angle subtended by the arc with a large diameter of the left push plate 74 is smaller than the central angle subtended by the arc with a large diameter of the right push plate 75, when the two auxiliary rotating shafts 72 rotate at the same time, the right push plate 75 moves to the clamping member 33 before the left push plate 74, the limiting member 61 moves to the spring hole 331 before the top member 51, one end of the limiting member 61 is located at the opening of the spring hole 331 close to the limiting member, the top member 51 subsequently jacks up the half ring body exposing the extension spring outside the spring hole 331, the half ring body bends with the step of the countersunk groove 62 as the bending point relative to the spring body, the design can provide definite bending points for the half ring body relative to the spring body and carry out subsequent bending, and the structure stability of the finished extension spring is high.

As a modified specific embodiment, referring to fig. 4 and 6, two sliding seats 8 are slidably connected with clamping members 10 parallel to the sliding rod 9, the upper surfaces of the two clamping members 10 are provided with support plates identical to the upper surface of the sliding rod 9, and the support plates are rotatably connected with second rollers 101, two auxiliary rotating shafts 72 are fixedly sleeved with clamping push plates 76 having a profile similar to that of the left push plate 74 or the right push plate 75, the two clamping push plates 76 are respectively circumscribed with the two second rollers 101, the upper surface of the worktable 2 is further provided with two sets of second extension springs 24 which are not in the same vertical plane as the second rollers 101, one ends of the two sets of second extension springs 24 are positioned on the worktable 2, and the other ends of the two sets of second extension springs 24 are respectively fixedly connected with the ends of the two clamping members 10 far away from the clamping member 33, the two sets of second extension springs 24 are connected in the same manner as the two sets of first extension springs 22, the pair diameter of the two arcs of the two clamping push plates 76 is the same as the pair diameter of the two arcs of the left push plate 74 or the right push plate 75, namely the moving distance between the clamping piece 10 and the slide rod 9 is equal, the end faces of the two clamping pieces 10 facing the clamping piece 33 are both right opposite to the side wall of the clamping piece 33, the central angle of the pair of arcs of the two clamping push plates 76 far away from the auxiliary rotating shaft 72 is larger than that of the pair of arcs of the right push plate 75 far away from the auxiliary rotating shaft 72, and the two straight edges of the right push plate 75 and the left push plate 74 fall into the end faces of the clamping push plates 76 which are coaxially arranged;

in the processing process, during the period that the circular arcs with small diameters of the two clamping push plates 76 roll relative to the second rollers 101, the clamping members 33 clamp the spring body and the rotary cylinder 39 rotates the half ring body, the two clamping members 10 are kept static, then one straight line edge of the two clamping push plates 76 rolls relative to the corresponding second rollers 101, the two clamping members 10 move in opposite directions on the two sliding rods 9, the two groups of second tension springs 24 are elastically deformed and elongated until the circular arcs with large diameters of the two clamping push plates 76 and the corresponding second rollers 101 roll relative to each other, the two clamping members 10 move in place and clamp the paired clamping members 33, then the two sliding rods 9 move in place in opposite directions, and when the top member 51 and the limiting member 61 finish processing the half ring body and are far away from each other, the other straight line edge of the two clamping push plates 76 rolls relative to the corresponding second rollers 101, the two groups of second tension springs 24 respectively pull the two clamping pieces 10 to be away from each other, and in such a circulating manner, the design that the clamping pieces 10 in pairs clamp the clamping pieces 33 clamping the tension springs can correct and position the positions of the clamping pieces 33, so as to provide accurate stations for the top piece 51 and the limiting piece 61 to process the tension springs together, thereby avoiding the defect that the machining efficiency is influenced by the deflection of the clamping pieces 33 relative to the sliding plate 32 in the moving process, meanwhile, the clamping push plate 76, the second roller 101 and the second tension spring 24 are used for replacing the linear motor, so that the power source can be reduced, the cost is reduced, the synchronism of the two clamping pieces 10 is high, meanwhile, the moving distance of the two clamping pieces 10 is fixed, the actions of the clamping pieces 10 when moving and stopping tend to be smooth, the smoothness of state conversion of the clamping pieces 10 is high, the programming of the program is simplified, and the error rate of the program is reduced;

further, a design using a linear motor to directly control the movement of the two clamping members 10 also falls within the scope of the present invention.

As an improved specific embodiment, referring to fig. 1, 4 and 6, the upper surface of the workbench 2 is provided with two lubrication grooves 23 respectively located below the two auxiliary rotating shafts 72, lubrication oil is filled in the lubrication grooves 23, the first tension spring 22 and the second tension spring 24 are both located above the lubrication grooves 23, when the two auxiliary rotating shafts 72 rotate, circular arc portions with large diameters of the left push plate 74, the right push plate 75 and the two clamping push plates 76 all enter the lubrication grooves 23 and are wetted by the lubrication oil, then the second roller 101 and the first roller 91 are wetted by the lubrication oil through contact, finally the second roller 101 and the first roller 91 pass in reverse to lubricate other portions of the peripheral walls of the left push plate 74, the right push plate 75 and the two clamping push plates 76, so as to reduce the friction force between the left push plate 74, the right push plate 75 and the two clamping push plates 76 and the corresponding first roller 91 and second roller 101, the transmission efficiency is improved.

As a modified specific embodiment, referring to fig. 3, 4 and 6, the control assembly 4 includes four solenoid valves 41 respectively connected to the first linear cylinder 36, the second linear cylinder 37, the third linear cylinder 38 and the rotary cylinder 39 through two air pipes, an external cylinder 42 connected to the four solenoid valves 41, and a point contact switch 43 electrically connected to the rotary motor 71, the solenoid valve 41 is of a two-position four-way type and has a rotary switch connected to one side facing the transmission rotating shaft 73 through a torsion spring, the external cylinder 42 exchanges air for the first linear cylinder 36, the second linear cylinder 37, the third linear cylinder 38 and the rotary cylinder 39 through the solenoid valves 41, the transmission rotating shaft 73 is sequentially and fixedly sleeved with four pressing members 77 and a point pressing member 78 along the axial direction thereof, the contour shape of the pressing member 77 is similar to the contour shapes of the left push plate 74, the right push plate 75 and the clamping push plate 76, the four pressing pieces 77 are also in a fan-like shape, the outline of the point pressing piece 78 is composed of two straight lines with one end crossed and one arc with two ends respectively connected with the other ends of the two straight lines, the point pressing piece 78 is in a water drop shape, the arc section of the point pressing piece 78 is coaxially connected with the transmission rotating shaft 73, the tip end of the arc section is positioned at one side of the transmission rotating shaft 73, the four pressing pieces 77 and the point pressing piece 78 deflect different angles relative to the horizontal plane, the point contact switch 43 and the four electromagnetic valves 41 are arranged side by side and are respectively positioned at one side of the point pressing piece 78 and one side of the four pressing pieces 77, the point contact switch 43 and the rotating motor 71 are both externally connected with a controller or a time delay device is arranged between the point contact switch 43 and the rotating motor 71,

in the initial state, the rotary switches and the point contact switches 43 on the four electromagnetic valves 41 are separated from the corresponding four pressing pieces 77 and the point contact switches 78, the pair of clamping pieces 33 are in the closed state, the spring hole 331 is located right below the rotary cylinder 39, the rotary motor 71 drives the transmission rotating shaft 73 to rotate, the four pressing pieces 77 and the point contact switches 78 are sequentially contacted and pressed with the four electromagnetic valves 41 and the point contact switches 43, the first step is to trigger the first linear cylinder 36 to drive the sliding block 34 to move away from the spring machine, the pair of clamping pieces 33 is converted from the closed state to the open state, the second step is to trigger the second linear cylinder 37 to drive the sliding plate 32 to move towards the spring machine while the sharp corners of the point contact switches 78 are pressed with the point contact switches 43, the rotary motor 71 stops rotating so that the first linear motor 36 and the second linear motor 37 continue to keep operating in the state, and after one to two seconds, the rotating motor 71 drives the transmission rotating shaft 72 to rotate, the point pressing piece 78 is separated from the point contact switch 43, after the sliding plate 32 moves to the right position, the pressing piece 77 and the electromagnetic valve 41 which trigger the operation of the first linear air cylinder 36 are separated, the first linear air cylinder 36 pushes the sliding block 34 to approach the spring machine so that the pair of clamping pieces 33 clamp the extension spring on the spring machine, in the third step, the pressing piece 77 and the electromagnetic valve 41 which trigger the operation of the second linear air cylinder 37 are separated from each other, the second linear air cylinder 37 drives the sliding plate 32 to move away from the spring machine to the right position, in the fourth step, the third linear air cylinder 38 drives the rotating air cylinder 39 to move downwards until the pushing piece 30 is contacted with the extension spring, in the fifth step, the pressing piece 77 and the electromagnetic valve 41 which are used for triggering the operation of the third linear air cylinder 38 are still in a pressing state, and the pressing piece 77 and the electromagnetic valve 41 which are used for triggering the operation of the rotating air cylinder 39 are pressed against each other so that the rotating air cylinder 39 drives the extension spring to rotate to the right position through the pushing piece 30, sixthly, separating the pressing piece 77 and the electromagnetic valve 41 for triggering the third linear cylinder 38 to operate and the pressing piece 77 and the electromagnetic valve 41 for triggering the rotary cylinder 39 to operate in sequence, and then resetting the third linear cylinder 38 and the rotary cylinder 39 in sequence;

the design that the four pressing pieces 77 are mutually extruded corresponding to the four electromagnetic valves 41 replaces the prior art that the control of the first linear air cylinder 36, the second linear air cylinder 37, the third linear air cylinder 38 and the rotary air cylinder 39 is finished by adopting a programming design, so that the programming of a master controller can be effectively simplified, the phenomenon of instruction error or incomplete execution caused by complicated programming is avoided, and the processing safety is improved; the design of controlling the temporary stop of the rotating motor 71 by the pressing member 78 and the touch switch 43 is designed to meet the requirements of not only providing enough moving time for the second linear cylinder 37 with large stroke under the condition of large number of pressing members 77, but also prolonging the state of the first linear cylinder 36 to keep enough time for the pair of clamping members 33 to be in the open state, avoiding the phenomenon that the pair of clamping members 33 are closed when the sliding plate 32 is not moved in place, and improving the compatibility among various steps.

As an improved specific embodiment, referring to fig. 1, 4 and 5, since the half ring body exposed outside the spring hole 331 is tightly attached to the spring body, the end of the half ring body will contact and extrude the spring body when rotating, which not only affects the bending flow of the half ring body relative to the spring body, but also easily damages the structure of the spring body and the end of the half ring body, in order to solve the problem, the left sliding assembly 5 further includes a hinge base 53 fixedly connected above the sliding rod 9, a rotating member 54 shaped like , a pressing member 55 located at one side of the hinge base 53, a return spring 56 standing on the upper surface of the sliding rod 9, and a pressing wheel 57 rotatably connected at one side of the rotating member 54, one end of the pressing member 55 shaped like is hinged with the hinge base 53 and fixedly connected with the top member 51, a bracket located at one side of the sliding base 9 is provided on the sliding base 8, the pressing member 55 is located on the bracket and is located far away from the upper surface of the sliding base 8, the -shaped pressing member 55 has the other end located above the return spring 56 and contacting against the upper end of the return spring 56, in order to avoid the return spring 56 from bending, a screw inserted into the return spring 56 may be provided on the upper surface of the slide rod 9, the screw is shorter than the return spring 56, the pressing wheel 57 and the pressing member 55 are both located on the same side of the rotating member 54, and the maximum distance between the pressing wheel 57 and the upper surface of the slide rod 9 is longer than the minimum distance between the pressing member 55 and the upper surface of the slide rod 9, during the movement of the slide rod 9 toward the clamping member 33, the pressing wheel 57 first moves to contact with the pressing member 55, at this time, the bottom edge of the pressing member 51 moves to the gap between the half ring body of the extension spring exposed out of the spring hole 331 and the clamping member 33, then the pressing wheel 57 rolls relative to the pressing member 55 and moves to the lower side of the pressing wheel 57, and the end of the rotating member 54 far from the hinge base 53 is pressed, the return spring 56 is compressed, the rotating part 54 rotates relative to the hinged seat 53, the top part 51 enters a gap between the half ring body of the extension spring exposed outside the spring hole 331 and the clamping part 33, the half ring body moves relative to the inclined plane on the top part 51 and bends, the top part 51 tilts upwards and applies an upward pushing force to the half ring body while bending, the end part of the half ring body is lifted up in the rotating process, after the half ring body is processed, the sliding rod 9 moves away from the clamping part 33, the pressing wheel 57 is separated from the pressing part 55, the return spring 56 recovers deformation and pushes up the rotating part 54 upwards, and the top part 51 rotates along with the rotating part 54 and exits the half ring body;

the design that the top part 51 is tilted upwards in the translation process enables the half ring body to be lifted upwards when the bottom edge of the step block 52 is inserted into a gap between the half ring body and the spring body, the end part of the half ring body is separated and rotated relative to the spring body, the extrusion and collision between the end part of the half ring body and the spring body are reduced, the half ring body is convenient to rotate relative to the spring body, and the end part of the half ring body is attached to the spring body through the elasticity of the half ring body when the step block 52 exits from the half ring body;

further optimization, referring to fig. 1, 4 and 5, after a part of material is cut off from the end surface of the step block 52 facing the Hua-Limit part 61, a V-shaped groove is formed, the groove comprises a chamfer surface for jacking up a half ring body, when the step block 52 is spliced with the step groove 62, the half ring body is in top contact with the bottom of the V-shaped groove, and the design can meet the requirement that the half ring body can be pressed downwards through the chamfer surface positioned above the half ring body in the process that the step block 52 exits the half ring body, so that the end part of the half ring body can be attached to the spring body;

further optimize, as shown with reference to fig. 1 and 4, two adjacent sides of the chamfer that are used for jacking up half ring body with ladder piece 52 are further chamfered for the bottom surface width of ladder piece 52 is along the direction of keeping away from locating part 61 crescent, and ladder piece 52 inserts the in-process in half ring body, and the both sides wall of ladder piece 52 is laminated with the inner wall of half ring body all the time, so the design can ensure that the crookedness of half ring body can not change, has improved structural stability.

As a modified specific embodiment, referring to fig. 1 and 4, a blanking hole 21 is formed on the worktable 2 and located right below the rotating motor 39, the blanking hole 21 extends along the moving direction of the sliding plate 32 and is used for connecting a connecting rod connecting the second linear cylinder 37 and the sliding plate 32 to pass through the blanking hole 21, a blanking pipe 11 is obliquely arranged in the cabinet 1, one end of the blanking pipe 11 is open and located on the upper surface of the cabinet 1 and is arranged corresponding to the blanking hole 21, and the other end of the blanking pipe 11 is open and located on one side wall of the cabinet 1, a collecting box can be placed in the position where the drop tube 11 is connected to the lateral wall of the cabinet 1, which, when the pairs of jaws 33 are mutually open, the processed extension spring sequentially passes through the blanking hole 21 and the blanking pipe 11 and falls into the collection box, compared with the mode of placing the collecting box below the clamping piece 33, the design can shorten the distance between the spring machine and the collecting box, and facilitate the placing and moving of the collecting box.

As an improved specific embodiment, referring to fig. 2, 4 and 6, a top touching rod 321 is integrally formed on an end surface of the sliding plate 32 away from the spring machine, one end of the supporting bar 12 is positioned on the cabinet body 1, and the other end of the supporting bar is equal to the top touching rod 321 in height and is fixedly connected with a first limiting rod 13 at the end, the first limiting rod 13 is coaxially arranged with the top touching rod 321, a connecting plate 322 is fixedly sleeved on the top touching rod 321, a second limiting rod 323 positioned at one side of the top touching rod 321 is fixedly connected on the connecting plate 322, a limiting block 25 is arranged on the workbench 2, an end of the second limiting rod 323 faces a side wall of the limiting block 25, when the sliding plate 32 moves away from the spring machine, the top touching rod 321 approaches the first limiting rod 13 until the top touching rod 321 abuts against the first limiting block 13 to stop moving, when the sliding plate 32 moves towards the spring machine, the second limiting rod 323 approaches the limiting block 25, the design can provide the limit for the second linear cylinder 37 until the limit block 25 is abutted against the second limit piece 323 to stop moving, so that the moving distance of the second linear cylinder 37 is limited, the adjustment in combination with the distance between the spring machine and the spring machine is facilitated, and the applicability is high;

further optimize, first gag lever post 13 and second gag lever post 323 all can adopt the elasticity telescopic link, and the impact force that first gag lever post 13 and second gag lever post 323 received can be reduced to this design, has prolonged first gag lever post 13, second gag lever post 323, has touched pole 321 and the life of second straight line cylinder 37 in the top.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (10)

1. The utility model provides a spring head trimming machine, is including cabinet body (1) and erect workstation (2) on cabinet body (1) upper surface, its characterized in that: the workbench (2) is provided with a telescopic clamp assembly (3) for clamping a semi-finished extension spring from a spring machine, a control assembly (4), a left sliding assembly (5) and a right sliding assembly (6) which are respectively positioned at two sides of the telescopic clamp assembly (3), and a power transmission assembly (7) for driving the left sliding assembly (5) and the right sliding assembly (6);

the telescopic clamp assembly (3) comprises a fixed seat (31) positioned on the workbench (2), a sliding plate (32) limited on the fixed seat (31) and capable of linearly sliding relative to the fixed seat (31), a pair of clamping pieces (33) hinged to the upper surface of the sliding plate (32), a sliding block (34) positioned below the tail part of the clamping piece (33) and capable of linearly sliding relative to the sliding plate (32), three pushing pieces (35) which are alternately arranged with the tail parts of the two clamping pieces (33) and fixed on the sliding block (34), a first linear cylinder (36) positioned on the sliding plate (32) and used for driving the sliding block (34) to move, a second linear cylinder (37) fixedly connected below the workbench (2) and capable of driving the sliding plate (32) to move, a third linear cylinder (38) fixedly connected with the workbench (2) through a support and positioned right above the head end of the clamping piece (33), and a rotary cylinder fixedly connected to the output shaft of the third linear cylinder (38) (39) The tail ends of the pair of clamping pieces (33) are bent outwards towards two sides of the clamping pieces and are in a splayed shape, spring holes (331) which can be spliced with each other and have inner wall grains matched with extension springs are formed in the head ends of the pair of clamping pieces (33), the spring holes (331) and the rotary air cylinders (39) are coaxially arranged, push pieces (30) which extend along the radial direction of the rotary air cylinders are arranged on the end faces of output shafts of the rotary air cylinders (39), the first linear air cylinders (36), the second linear air cylinders (37), the third linear air cylinders (38), the rotary air cylinders (39) and the power transmission assembly (7) are connected with the control assembly (4), the head ends of the pair of clamping pieces (33) are opened and closed under the influence of the three pushing pieces (35) through the reciprocating movement of the first linear air cylinders (36), and the sliding plates (32) are driven by the second linear air cylinders (37) to reciprocate relative to the spring machine, so that the head ends of the pair of the clamping pieces (33) can move on the spring machine in a reciprocating manner The extension spring is clamped to the position right below the rotary motor (39), and the rotary motor (39) is pushed to the extension spring through the third linear motor (38), so that the rotary motor (39) drives the extension spring to rotate relative to the spring hole (331) through the push sheet (30);

left side sliding component (5) and right side sliding component (6) are all including fixing slide (8) on workstation (2) and spacing slide bar (9) on slide (8) and can slide (8) rectilinear movement relatively slide bar (9), two the moving direction of the equal perpendicular to slide (32) of moving direction of slide bar (9), right side sliding component (6) are still including locating limiting part (61) on slide bar (9), left side sliding component (5) are still including locating on slide bar (9) and one end have top member (51) of scarf, top member (51) and limiting part (61) are located the both sides of a pair of holder (33) respectively and correspond with spring hole (331), be provided with countersunk head groove (62) and ladder piece (52) that can peg graft each other on locating part (61) and top member (51) the tip in opposite directions respectively, countersunk head groove (62)'s big end size is greater than extension spring's external diameter and its tip size is less than extension spring's internal diameter The two slide bars (9) are driven by the power transmission assembly (7), when the extension spring is pushed by the push sheet (30) and limited in the spring hole (331), the power transmission assembly (7) drives the two slide bars (9) to move oppositely, and the jacking piece (51) jacks up the ring body at the end part of the extension spring through the inclined plane of the jacking piece until the jacked ring body is abutted to the limiting piece (61).

2. The spring end trimming machine of claim 1, wherein: the power transmission assembly (7) comprises a rotating motor (71) with a body positioned in the cabinet body (1) and an output end sequentially penetrating through the cabinet body (1) and the workbench (2), two auxiliary rotating shafts (72) which are parallel to each other, a transmission rotating shaft (73) positioned above the second linear cylinder (37), a left push plate (74) and a right push plate (75) which are fan-shaped and respectively fixedly sleeved on the two auxiliary rotating shafts (72), wherein the rotating motor (71) is electrically connected with the control assembly (4), the left sliding assembly (5) and the right sliding assembly (6) are positioned between the two auxiliary rotating shafts (72), the transmission rotating shaft (73) and one auxiliary rotating shaft (72) are in transmission connection with an output shaft of the rotating motor (71) through a bevel gear, and the transmission rotating shaft (73) is in transmission connection with the other auxiliary rotating shaft (72) through a bevel gear, two slide bar (9) are kept away from on the tip of holder (33) all rotate be connected with respectively with left push pedal (74) and right push pedal (75) circumscribed first gyro wheel (91), workstation (2) upper surface still is provided with two sets ofly all with first gyro wheel (91) first extension spring (22) not in same vertical plane, two sets of the one end of first extension spring (22) all is located workstation (2) and the other end respectively with two slide bar (9) keep away from the tip fixed connection of holder (33), drive two supplementary pivot (72) through rotating electrical machines (71) and rotate simultaneously and make left push pedal (74) and right push pedal (75) can promote two slide bar (9) motion in opposite directions respectively, two sets of first extension springs (22) are all lengthened, resume through two sets of first extension springs (22) and make two slide bar (9) move away from each other.

3. The spring end trimming machine of claim 2, wherein: the central angle of the arc of the left push plate (74) far away from the auxiliary rotating shaft (72) is smaller than the central angle of the arc of the right push plate (75) far away from the auxiliary rotating shaft (72), and when the two auxiliary rotating shafts (72) rotate simultaneously, the right push plate (75) moves towards the clamping piece (33) before the left push plate (74).

4. The spring end trimming machine of claim 3, wherein: two clamping pieces (10) which are parallel to each other with a sliding rod (9) are connected to the two sliding seats (8) in a sliding mode, one end, away from the clamping piece (33), of each of the two clamping pieces (10) is provided with a second roller (101), the two auxiliary rotating shafts (72) are fixedly sleeved with fan-shaped clamping push plates (76), the two clamping push plates (76) are respectively circumscribed with the two second rollers (101), the upper surface of the workbench (2) is further provided with two groups of second tension springs (24) which are not in the same vertical plane with the second rollers (101), one ends of the two groups of second tension springs (24) are positioned on the workbench (2), the other ends of the two groups of second tension springs are respectively fixedly connected with the end parts, away from the clamping piece (33) with the two clamping pieces (10), the central angle, opposite to the circular arc, away from the auxiliary rotating shaft (72), of the two clamping push plates (76) is larger than the central angle, away from the auxiliary rotating shaft (72), opposite to the circular arc, of the right push plate (75), the two auxiliary rotating shafts (72) are driven by the rotating motor (71) to rotate simultaneously, so that the two clamping push plates (76) respectively push the two clamping pieces (10) to move towards the clamping piece (33) and clamp the clamping piece (33) before the left push plate (74) and the right push plate (75), and then the left push plate (74) and the right push plate (75) respectively push the two sliding rods (9) to move oppositely.

5. The spring end trimming machine of claim 4, wherein: two lubricating grooves (23) which are respectively positioned below the two auxiliary rotating shafts (72) are formed in the upper surface of the workbench (2), and when the two auxiliary rotating shafts (72) rotate, the left push plate (74), the right push plate (75) and the two clamping push plates (76) can partially extend into the lubricating grooves (23) below the left push plate, the right push plate and the two clamping push plates.

6. The spring heading machine of claim 2, 3, 4 or 5, wherein: the control assembly (4) comprises four electromagnetic valves (41) which are respectively connected with a first linear cylinder (36), a second linear cylinder (37), a third linear cylinder (38) and a rotary cylinder (39) through two air pipes, an external cylinder (42) communicated with the four electromagnetic valves (41) and a point contact switch (43) electrically connected with a rotary motor (71), wherein four fan-shaped pressing pieces (77) and one drop-shaped point contact piece (78) are sequentially fixedly sleeved on the transmission rotating shaft (73) along the axial direction of the transmission rotating shaft, the four pressing pieces (77) and the one point contact piece (78) deflect different angles relative to the horizontal plane, the point contact switch (43) and the four electromagnetic valves (41) are arranged side by side and respectively correspond to the point contact piece (78) and the four pressing pieces (77), and in the rotating process of the transmission rotating shaft (73), the pressing pieces (78) and the farthest parts of the four pressing pieces (77) away from the transmission rotating shaft (73) alternately press corresponding parts The point contact switch (43) and the switches on the four electromagnetic valves (41) enable the rotary motor (71), the first linear cylinder (36), the second linear cylinder (37), the third linear cylinder (38) and the rotary cylinder (39) to be operated correspondingly and sequentially.

7. The spring heading machine of claim 1, 2, 3, 4, or 5, wherein: the left sliding assembly (5) further comprises a hinged seat (53) fixedly connected above the sliding rod (9), a rotating piece (54) in a shape, a pressing piece (55) positioned on one side of the hinged seat (53), a return spring (56) standing on the upper surface of the sliding rod (9) and a pressing wheel (57) rotatably connected on one side of the rotating piece (54), one end of the pressing piece (55) in a shape is hinged with the hinged seat (53) and fixedly connected with a jacking piece (51), the other end of the pressing piece (55) in a shape is positioned above the return spring (56) and in jacking contact with the upper end of the return spring (56), the pressing wheel (57) and the pressing piece (55) are both positioned on the same side of the rotating piece (54) and the maximum distance between the pressing wheel (57) and the upper surface of the sliding rod (9) is greater than the minimum distance between the pressing piece (55) and the upper surface of the sliding rod (9), and when the sliding rod (9) moves towards the clamping piece (33), the pressing wheel (57) moves to be in contact with the pressing piece (55), the pressing wheel (57) is pressed downwards by the pressing piece (55), the return spring (56) is compressed, the rotating piece (54) rotates relative to the hinged base (53), and the top piece (51) tilts upwards while moving.

8. The spring heading machine of claim 1, 2, 3, 4, or 5, wherein: the blanking device is characterized in that a blanking hole (21) located right below the rotating motor (39) is formed in the workbench (2), a blanking pipe (11) is obliquely arranged in the cabinet body (1), one end opening of the blanking pipe (11) is located on the upper surface of the cabinet body (1) and corresponds to the blanking hole (21), and the other end opening of the blanking pipe is located on one side wall of the cabinet body (1).

9. The spring heading machine of claim 1, 2, 3, 4, or 5, wherein: still including with cabinet body (1) fixed connection branch (12) and be located first gag lever post (13) on branch (12), slide (32) are kept away from on the terminal surface of spring machine and are provided with top feeler lever (321) with the coaxial setting of first gag lever post (13), and when top feeler lever (321) removed along with slider (32) keep away from the spring machine, first gag lever post (13) and top feeler lever (321) counterbalance and stop motion.

10. The spring end trimmer of claim 9, wherein: fixed cover is equipped with a connecting plate (322) on top feeler lever (321), fixedly connected with is located second gag lever post (323) of top feeler lever (321) one side on connecting plate (322), be provided with on workstation (2) and prevent stopper (25) that second gag lever post (323) removed toward the coiling machine direction.

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