CN205519130U - A semi-automatic scroll spring forming machine - Google Patents

Abstract

The utility model discloses a semi -automatic spiral spring make -up machine, including the frame that is connected with forming slide with become mandrel, with forming slide swing joint's lever, drive lever pivoted cam with be used for supporting the fulcrum of lever, the lever is equipped with first the slide portion of fulcrum along the removal of lever length direction that realize, the frame is equipped with the mounting for the fixed pivot. The portion of sliding is the waist -shaped slot along lever length direction, prop up to bring out into the open and establish and rotate and connect in waist -shaped slot, the fulcrum is along lever length direction sliding connection in waist -shaped slot. The frame is equipped with the second portion of sliding that is parallel arrangement with the first portion of sliding, lever one end sliding connection in the second portion of sliding is kept away from to the fulcrum. Above -mentioned technical scheme provides a semi -automatic spiral spring make -up machine that can produce the spiral spring of the different number of turnss.

Description

A semi-automatic scroll spring forming machine

technical field

The utility model relates to the field of spring manufacturing, in particular to a semi-automatic scroll spring forming machine.

Background technique

Flat scroll spring, also known as clockwork spring, one end is fixed and the other end acts on torque; under the action of torque, the spring material produces bending elastic deformation, which makes the spring twist in the plane, and the deformation angle is proportional to the torque. Scroll springs are widely used, and are generally formed by hand or machine in the production process.

The patent document of Chinese Patent Publication No. CN 202893922U discloses a semi-automatic planar scroll spring forming machine, which belongs to mechanical processing equipment. The utility model includes a forming slider and a forming mandrel driven by a motor shaft, and is characterized in that: The motor shaft drives a gear set, and a cam is driven by the gear set, and a lever is configured for the cam and the forming slider. The middle of the lever is supported by a fulcrum, and one end of the lever is movably connected to the forming On the slider, the other end of the lever is held on the cam by an elastic member, and a probe is provided corresponding to the lever. In the above technical solution, the rising distance of one end of the lever connected to the forming slider is a certain value, and the distance between the highest point that the forming slider rises to and the forming mandrel is a fixed value. If scroll springs with different numbers of turns are to be produced, Then the program cannot meet the production demand.

Utility model content

The purpose of this utility model is to provide a semi-automatic scroll spring forming machine, which can meet the needs of producing scroll springs with different turns by changing the position of the lever fulcrum in the length direction of the lever.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a semi-automatic scroll spring forming machine, including a frame connected with a forming slide block and a forming mandrel, a lever movably connected with the forming slide block, and a driving lever The rotating cam and the fulcrum for supporting the lever, the lever is provided with a first sliding part to realize the movement of the fulcrum along the length direction of the lever, and the frame is provided with a fixing piece for fixing the fulcrum.

By adopting the above technical scheme, by changing the position of the fulcrum on the lever along its length direction, the maximum height of the forming slider connected to one end of the lever can be changed within one rotation cycle of the cam, so that the forming slider and the forming The different distances of the mandrels can meet the needs of producing scroll springs with different turns, improve the production scope of the whole equipment, and improve the utilization rate.

The utility model is further configured as follows: the sliding part is a waist-shaped groove along the length direction of the lever, the fulcrum is penetrated and rotatably connected in the waist-shaped groove, and the fulcrum is slidably connected to the waist-shaped groove along the length direction of the lever.

By adopting the above-mentioned technical scheme, the rotational connection between the fulcrum and the lever can be used, so that the lever can rotate around the fulcrum, so that the lever can drive the forming slider to move, and the sliding characteristics of the fulcrum and the waist-shaped groove in the length direction of the lever are as follows: The position of the fulcrum in the waist groove can be changed, so as to realize the change of the distance between the highest rising point of the forming slider and the forming mandrel, so that the equipment can produce planar scroll springs with different turns.

The utility model is further configured as follows: a sliding bearing is connected between the fulcrum and the waist-shaped groove, and the sliding bearing is embedded and slidably connected to the inner surface of the waist-shaped groove.

By adopting the above technical scheme and utilizing the connecting function of the sliding bearing, the lever can be rotated around the fulcrum, and then one end of the lever drives the forming slider to move in the vertical direction, and at the same time it can also play a connecting role, connecting the fulcrum and The lever remains in an embedded and combined state, and the two will not be separated during the production process. While playing the role of connection, it will not affect the normal rotation of the lever.

The utility model is further configured as follows: the frame is provided with a second sliding part parallel to the first sliding part, and the end of the fulcrum away from the lever is slidably connected to the second sliding part.

By adopting the above technical scheme, the lever and the frame are connected by the fulcrum, and can move along the length direction of the lever, so that the fulcrum is at different positions of the lever, and at the same time, the fulcrum can still be connected to the frame, realizing The supporting effect on the lever prevents the two from separating and ensures the normal production process.

The utility model is further configured as follows: the second sliding part is evenly provided with several first through holes along the vertical direction along the horizontal direction, and the second through hole along the vertical direction is provided at the end of the fulcrum close to the frame, The fixing member is a fixing pin passing through the first through hole and the second through hole.

By adopting the above technical solution, utilizing the cooperation between the first through hole and the second through hole, the fixation of the two can be realized by means of the fixing pin piercing the two, and the fixing pin is penetrated in different first through holes, Therefore, the fulcrum is located at different positions of the lever, thereby changing the center of rotation of the lever, and changing the rising highest point of the forming slider connected to one end of the lever.

The utility model is further configured as follows: the end of the fulcrum away from the frame is provided with a fixed block, and the surface of the fixed block is in conflict with the side of the lever away from the frame.

By adopting the above-mentioned technical scheme, the conflict between the surface of the fixed block and the surface of the lever is used to prevent the lever from detaching from the fulcrum, play a role in limiting the lever in the width direction of the frame, and keep the lever on a plane for rotation , no deviation will occur.

The utility model is further configured as follows: the second sliding part is provided with a lead screw along the length direction of the lever, the fixing part is threaded and connected to the lead screw, and the end of the fulcrum close to the frame is fixedly connected to the fixing part.

By adopting the above-mentioned technical scheme and utilizing the threaded connection between the lead screw and the fixing part, the movement of the fixing part on the lead screw can be realized to drive the horizontal movement of the fulcrum in the first and second sliding parts, and the position of the fulcrum in the first sliding part can be changed. , The different positions of the second sliding part, so that the maximum height of the formed slider connected by the lever is changed to meet the requirements of manufacturing planar scroll springs with different specifications and different numbers of turns. The movement of the fixed part on the lead screw is a continuous adjustment, which meets the manufacturing requirements of scroll springs of more specifications.

The utility model is further configured as: one end of the screw is provided with a rotating handle.

By adopting the above-mentioned technical solution, the screw can be directly rotated by using the rotating handle, so that the fixed part can be driven to move left and right on the screw by means of threaded connection, making the adjustment process more convenient, quicker and labor-saving.

The utility model is further configured as follows: the two sides of the forming slide block close to one end of the forming mandrel extend upwards and respectively collide with the limit plates on the two sides of the steel strip.

By adopting the above-mentioned technical scheme and utilizing the resistance effect of the limit plate on both sides of the steel strip, in the process of driving the steel strip to rotate by the forming mandrel, the movement and deviation of the steel strip are effectively avoided, and the steel strip is limited along its There is a room for left and right movement in the width direction, so that the steel strip is always kept in one position without moving, so that after forming, the end surface of the scroll spring can be guaranteed to be flat and not raised, and the subsequent work of leveling the scroll spring can be reduced. .

The utility model is further configured as: the limit shafts are rotationally connected between the limit plates, and the surface of the limit shafts is in contact with the bottom surface of the steel strip.

By adopting the above-mentioned technical scheme, using the limit shaft that interferes with the bottom surface of the steel strip, it plays a supporting role for the steel strip during the forming process, and it is limited in the vertical direction, combined with the two sides of the steel strip. Limits, thereby restricting the multiple degrees of freedom of the steel strip, effectively preventing the movement of the steel strip during the forming process. And by using the conflict between the limit shaft and the surface of the steel belt, the forming slider can be used to make the limit shaft exert an upward force on the steel belt, and the surface is in rolling contact, which reduces the friction between the two and will not affect the steel belt. The quality of the belt surface is high, and it can be rotated along the drive of the forming mandrel without resistance to the steel belt, making the forming process natural and smooth.

In summary, the utility model has the following beneficial effects:

One: Combining the first sliding part, the second sliding part and the fulcrum, it is possible to change the different positions of the fulcrum on the lever, and to ensure that the fulcrum is connected to the frame without detachment, thereby realizing changing the shape of the connection at one end of the lever The maximum height that the slider can rise;

Second: Combining the first through hole, the second through hole and the fixed pin, it can realize the fixing function of the fulcrum after changing its position, so that the fulcrum can be fixedly connected to the frame and prevent the lever from moving during the production process ;

Third: Combining the limit piece and the limit shaft, the degree of freedom of the steel strip in the horizontal and vertical directions can be limited, thereby exerting multiple resistance forces on the steel strip during the forming process, so that it does not It will move up and down, left and right, which can ensure that the scroll spring has good flatness and winding tightness after forming.

Description of drawings

Fig. 1 is the overall structure schematic diagram of present embodiment one;

Fig. 2 is a schematic structural diagram for embodying the motor in Embodiment 1;

Fig. 3 is a schematic structural diagram for embodying the first sliding part in the first embodiment;

Fig. 4 is a schematic structural diagram for embodying the second sliding part in the first embodiment;

FIG. 5 is a schematic structural diagram of the second embodiment.

Reference signs: 1, forming slider; 2, motor; 3, forming mandrel; 4, limit groove; 5, driving gear; 6, driven gear; 7, cam; 8, slideway; 9, lever; 10. Spring; 11. Travel switch; 12. First sliding part; 13. Sliding bearing; 14. Fulcrum; 15. Fixed block; 16. Second sliding part; 17. First through hole; 18. Fixed pin ; 19, limit plate; 20, limit shaft; 21, leading screw; 22, square moving block; 23, rotating handle.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment one:

As shown in Figure 1-2, a scroll spring forming machine includes a drive motor 2 connected to the frame, the output shaft of the motor 2 is connected to the forming mandrel 3, and a circumferential surface of the forming mandrel 3 is provided The limit groove 4 is coaxially connected with a driving gear 5 on the output shaft of the motor 2 , and a driven gear 6 is arranged through the meshing of the gear set, and a cam 7 is coaxially connected with the driven gear 6 .

The frame is positioned at the lower end of the forming mandrel 3 to be provided with a forming slide block 1, the forming slide block 1 is embedded and slidably connected to the slideway 8 on the frame, and the direction of the slideway 8 is vertically arranged.

A lever 9 is arranged between the cam 7 and the forming slide block 1. The lever 9 utilizes the fulcrum 14 to be connected on the frame. The lever 9 can rotate around the fulcrum 14 in a vertical plane. Keep being in conflict setting all the time, and the other end is movably connected on the forming slide block 1. On frame, be connected with a spring 10, its lower end is connected with lever 9 near cam 7 one end.

Also be provided with a travel switch 11 on the frame, travel switch 11 is positioned at the upper end of cam 7 installation positions, travel switch 11 is connected with motor 2 by control system.

Referring to Fig. 3, in the middle position of the lever 9, there is a first sliding part 12 arranged parallel to its length direction, which is a waist-shaped groove, and the upper and lower inner surfaces of the waist-shaped groove are provided with grooves. A sliding bearing 13 is embedded in the groove and is slidably connected, and a fulcrum 14 is pierced in the sliding bearing 13. The fulcrum 14 is a pin shaft, and a fixed block 15 is coaxially connected to the end of the pin shaft far away from the frame. Block 15 is a cylindrical block, and the outer surface of one side and lever 9 of fixed block 15 near the frame is conflictingly arranged.

Referring to Figures 3-4, the frame is provided with a second sliding part 16 that is parallel to the waist groove and arranged on the same plane. The second sliding part 16 is a chute connected to the surface of the frame. One end of the fulcrum 14 near the frame is embedded and slidably connected in the chute, and five first through holes 17 in the vertical direction are evenly spaced along the length of the lever 9 on the chute, and at the fulcrum 14 The circumferential surface near one end of the frame is provided with a second through hole arranged in parallel with its radial direction, the first through hole 17 corresponds to the second through hole, and the fixing pin 18 can be used to pass through the first through hole 17 and the second through hole. The second through hole realizes the fixed connection between the fulcrum 14 and the frame.

With reference to shown in Figure 4, both sides of the upper end of the forming slide block 1 are vertically connected with a limit plate 19, the limit plate 19 is a square plate, and a limit shaft 20 is connected between the two limit plates 19, the limit shaft 20 is a circular shaft, which is rotationally connected at the junction of the limiting shaft 20 and the limiting plate 19, and the limiting axis 20 stretches out from the limiting plate 19 for a distance, and both ends are threaded. Both ends of the steel strip are threaded and connected with nuts, the surface of the nut is in contact with the surface of the limiting plate 19, and the two sides of the steel strip are respectively in contact with the inner surfaces of the limiting plate 19 on both sides.

The working principle of this embodiment is: first, according to the different turns of the planar scroll spring 10 that needs to be produced, the fixing pins 18 are located in different first through holes 17, and the second through holes are drilled to fix the fulcrum 14. On the frame; the motor 2 drives the forming mandrel 3 to rotate. At this time, one end of the steel strip is embedded in the limiting groove 4 of the forming mandrel 3, and the two sides of the steel strip are in contact with the side of the limiting member , and the bottom surface of the steel strip is in contact with the surface of the limit shaft 20 . The cam 7 is driven to rotate by the driving gear 5 meshing with the driven gear 6, and the cam 7 starts to be in contact with one end of the lever 9, and the lever 9 makes one end hinged to the forming slider 1 rise upward under the action of the fulcrum 14, thereby Drive the forming slider 1 to slide upward in the chute, cooperate with the rotation of the forming mandrel 3 and the upward thrust of the limit shaft 20 on the steel strip, so that the steel strip is crimped and formed into a scroll spring 10 . At this time, the cam 7 continues to rotate, and the contact point with the lever 9 rotates to the small diameter of the cam 7, and the lever 9 drives the forming slider 1 to move downward. When the cam 7 contacts the travel switch 11, the switch is triggered, thereby stopping the motor 2 Rotate or drive the motor 2 to reverse, and at this time, the formed scroll spring 10 is taken out. Then a molding cycle is carried out.

Embodiment two:

Referring to Fig. 5, a semi-automatic scroll spring 10 forming machine is different from Embodiment 1 in that a horizontal lead screw 21 is arranged in the second sliding part 16 of the frame, and on the lead screw 21 There is a fixing part pierced and threaded. The shape of the fixing part is a square moving block 22. The bottom surface of the square moving block 22 is fixedly connected with the fulcrum 14, and a rotating handle 23 is coaxially connected to one end of the lead screw 21, so as to pass The rotation of the lead screw 21 enables the fulcrum 14 to be located at different positions of the first sliding part 12, and the rotation of the lead screw 21 realizes the continuous adjustment of the position of the fulcrum 14, thereby meeting the vortex of more specifications. Production demand for coil springs 10.

This embodiment uses a new mechanical structure to achieve the effect of being able to produce scroll springs with different numbers of turns.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (10)

1. A semi-automatic scroll spring forming machine, including a frame connected with a forming slider (1) and a forming mandrel (3), a lever (9) movably connected with the forming slider (1), a driving lever (9 ) the rotating cam (7) and the fulcrum (14) for supporting the lever (9), the feature is that: the lever (9) is provided with a first slide to realize the movement of the fulcrum (14) along the length direction of the lever (9) The moving part (12), the frame is provided with a fixing piece for fixing the fulcrum (14). 2. A semi-automatic scroll spring forming machine according to claim 1, characterized in that: the sliding part is a waist-shaped groove along the length direction of the lever (9), and the fulcrum (14) is penetrated and rotated Connected in the waist-shaped groove, the fulcrum (14) is slidably connected to the waist-shaped groove along the length direction of the lever (9). 3. A semi-automatic scroll spring forming machine according to claim 2, characterized in that: a sliding bearing (13) is connected between the fulcrum (14) and the waist groove, and the sliding bearing (13) is embedded It is set and slidably connected to the inner surface of the waist groove. 4. A semi-automatic scroll spring forming machine according to claim 2, characterized in that: the frame is provided with a second sliding part (16) parallel to the first sliding part (12), so The end of the fulcrum (14) away from the lever (9) is slidably connected to the second sliding part (16). 5. A semi-automatic scroll spring forming machine according to claim 4, characterized in that: the second sliding part (16) is uniformly provided with a number of first through holes (17) along the vertical direction along the horizontal direction ), the fulcrum (14) is provided with a second through hole in the vertical direction near one end of the frame, and the fixing member is a fixing pin (18) passing through the first through hole (17) and the second through hole. 6. A semi-automatic scroll spring forming machine according to claim 3, characterized in that: the end of the fulcrum (14) away from the frame is provided with a fixed block (15), and the surface of the fixed block (15) is in conflict with The lever (9) is away from the side of the frame. 7. A semi-automatic scroll spring forming machine according to claim 4, characterized in that: the second sliding part (16) is provided with a lead screw (21) along the length direction of the lever (9), the The fixing piece is threaded and connected to the lead screw (21), and the end of the fulcrum (14) close to the frame is fixedly connected to the fixing piece. 8. A semi-automatic scroll spring forming machine according to claim 7, characterized in that: one end of the lead screw (21) is provided with a rotating handle (23). 9. A semi-automatic scroll spring forming machine according to claim 1, characterized in that: the two sides of the forming slider (1) close to one end of the forming mandrel (3) extend upwards and respectively interfere with the two sides of the steel belt. Limiting plate (19) on the side. 10. A semi-automatic scroll spring forming machine according to claim 9, characterized in that: said limiting plates (19) are rotatably connected to limiting shafts (20), and the surface of said limiting shafts (20) Contradict to the bottom surface of the steel strip.