Straight spring feeding device

Abstract

The utility model discloses a straight spring feeding device which comprises an arrangement bin, the arrangement bin comprises a cylinder body, a first end cover and a second end cover, the axis of the cylinder body is horizontally arranged, the first end cover and the second end cover are arranged at the two ends of the cylinder body in a covering mode respectively, and an inner major arc groove matched with the outer diameter of a straight spring is formed in the inner wall of the cylinder body. The lower end of the inner major arc groove communicates with an air inlet connector, the upper end of the inner major arc groove communicates with a discharging connector used for being connected with a spring conveying pipe, the air inlet connector and the discharging connector are located outside the arrangement bin, and a feeding port is formed in the first end cover. The straight spring feeding device is good in working stability and beneficial to stable production.

Description

Technical Field

[0001] The utility model relates to the field of rotary automatic assembly equipment, and particularly relates to a straight spring feeding device. Background Art

[0002] At present, rotary automatic assembly equipment has been widely used in the assembly of electronic components. There is a type of fuse that needs to be assembled by rotary automatic assembly equipment. This fuse is also called a thermal fuse. For example, reference can be made to the "Thermosensitive particle type thermal fuse" with the Chinese utility model patent publication number CN111105964B and the "Wafer for thermal fuse and its thermal fuse" with the Chinese utility model patent publication number CN203521349U. There is a straight spring inside this fuse. That is to say, the outer shape of this straight spring is cylindrical. Usually, the outer diameter of this straight spring is less than 4 mm. Therefore, the weight of this straight spring is very small. Currently, the straight spring is sorted and output through a feeding device. The feeding device mainly includes a linear vibrator. A channel that only allows a single straight spring to pass through is provided at the end of the linear vibrator. When the linear vibrator works, it continuously throws and shakes up the straight spring, constantly changing the direction of the straight spring. At the same time, the straight spring is transported by the linear vibrator towards the end of the linear vibrator. Therefore, only the straight spring with its axis direction exactly aligned with the entrance of the above channel can enter the channel, and then the straight spring is transported by the linear vibrator to the feeding mechanism, waiting to be picked up onto the turntable or dropped onto the turntable. However, for some straight springs with a relatively large pitch and a relatively small wire diameter, such as a straight spring with a pitch more than three times the wire diameter, it is easy for two or more straight springs to be buckled together. If one end of one of the buckled springs is inserted into the above channel, it will cause the channel to be blocked and requires manual intervention, resulting in poor working stability, which will seriously affect the process cycle of the automatic assembly equipment. Therefore, it is necessary to improve the straight spring feeding device of the prior art. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a straight spring feeding device with better working stability.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The disclosed straight spring feeding device of the utility model includes a sorting bin. The sorting bin includes a cylinder body, a first end cover, and a second end cover. The axis of the cylinder body is horizontally arranged. The first end cover and the second end cover are respectively covered at both ends of the cylinder body. An inner superior arc groove matching the outer diameter of the straight spring is formed on the inner wall of the cylinder body. The lower end of the inner superior arc groove is connected to an air inlet interface, and the upper end of the inner superior arc groove is connected to a discharge interface for connecting a spring delivery pipe. The air inlet interface and the discharge interface are located outside the sorting bin. A feeding port is formed on the first end cover.

[0006] Preferably, the first end cover includes an upper plate and a lower plate, the upper plate and the lower plate are detachably mounted on the cylinder body through corresponding fasteners respectively, and the feeding port is formed on the upper plate.

[0007] Preferably, a funnel is connected to the feeding port.

[0008] Preferably, both the first end cover and the second end cover are provided as transparent end covers.

[0009] Preferably, the straight spring feeding device of the present invention further includes a support plate, the support plate is formed with an observation window, the observation window is aligned with the position of the second end cover, and the second end cover is clamped between the support plate and the cylinder body.

[0010] Preferably, an air inlet needle and a discharge pipe are inserted into the cylinder body, the air inlet needle and the discharge pipe are respectively arranged along the tangential direction of the inner superior arc groove, the outer end of the air inlet needle is connected to the air inlet interface, the inner end of the air inlet needle is connected to the lower end of the inner superior arc groove, the outer end of the discharge pipe is provided as the discharge interface, and the inner end of the discharge pipe is connected to the upper end of the inner superior arc groove.

[0011] Preferably, the inner superior arc grooves are arranged axially.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by providing a sorting bin including a cylinder body, a first end cover and a second end cover, the axis of the cylinder body is horizontally arranged, the first end cover and the second end cover are respectively covered at both ends of the cylinder body, an inner superior arc groove matching the outer diameter of the straight spring is formed on the inner wall of the cylinder body, the lower end of the inner superior arc groove is connected to an air inlet interface, the upper end of the inner superior arc groove is connected to a discharge interface for connecting a spring conveying pipe, the air inlet interface and the discharge interface are located outside the sorting bin, and a feeding port is formed on the first end cover, so that the straight spring feeding device of the present invention removes the straight springs buckled together by gravity, and thus the working stability of the straight spring feeding device of the present invention is better, which is beneficial to the stable progress of production. Description of the Drawings

[0013] Figure 1 It is a front three-dimensional structural schematic diagram of the straight spring feeding device of the present invention.

[0014] Figure 2 It is a back three-dimensional structural schematic diagram of the straight spring feeding device of the present invention with the second end cover removed.

[0015] Figure 3 It is a sectional structural schematic diagram of the straight spring feeding device of the present invention in the front view direction.

[0016] Figure 4This is a schematic cross-sectional view of the straight spring feeding device of the present utility model in the right view direction.

[0017] Figure 5 This is a schematic diagram of the working state of the straight spring feeding device of the present utility model.

[0018] Figure 6 This is a schematic diagram of the connection and material distribution mechanism of the straight spring feeding device of the present utility model.

[0019] Label description: sorting bin 1; cylinder body 11; inner major arc groove 111; air inlet interface 101; air inlet needle 1010; discharge interface 102; discharge pipe 1020; feeding port 103; first end cover 12; upper plate 121; lower plate 122; funnel 13; second end cover 14; support plate 2; observation window 201; straight spring 99; spring delivery pipe 98; air pipe 97; spring buffer bin 96; material cutting cylinder 95; feeding cylinder 94. Specific embodiments

[0020] The present utility model will be further described below with reference to the accompanying drawings.

[0021] The straight spring feeding device of the present utility model, as Figures 1 to 4 shown, includes a sorting bin 1. The sorting bin 1 includes a cylinder body 11, a first end cover 12 and a second end cover 14. The axis of the cylinder body 11 is horizontally arranged. The cylinder body 11 is cylindrical. The first end cover 12 and the second end cover 14 are respectively covered at both ends of the cylinder body 11, so that a cylindrical cavity is formed in the sorting bin 1. An inner major arc groove 111 matching the outer diameter of the straight spring 99 is formed on the inner wall of the cylinder body 11. As Figure 3 shown, specifically, the inner major arc groove 111 extends along an arc, and the inner major arc groove 111 is a major arc, that is, the inner major arc groove 111 extends to more than half of the circle. The lower end of the inner major arc groove 111 is connected to an air inlet interface 101, and the upper end of the inner major arc groove 111 is connected to a discharge interface 102 for connecting a spring delivery pipe 98. The air inlet interface 101 and the discharge interface 102 are located outside the sorting bin 1. As Figure 1 and Figure 4 shown, a feeding port 103 is formed on the first end cover 12.

[0022] The working principle of the straight spring feeding device of the present utility model is briefly described as follows: As Figure 5As shown in the figure, several straight springs 99 are fed into the interior of the sorting bin 1 through the feeding port 103. Then, due to gravity, the straight springs 99 can sink to the bottom of the sorting bin 1. Since the inner major arc groove 111 is a major arc, the lower part of the inner major arc groove 111 can allow the straight springs 99 to fall in. More specifically, the inner major arc groove 111 is symmetric about the horizontal plane on the central axis of the cylinder 11. Connect the air inlet interface 101 to the air pipe 97. Then, compressed air is input into the air inlet interface 101 through the air pipe 97, and then the compressed air is input to the lower end of the inner major arc groove 111. The compressed air blows into the inner major arc groove 111, so the straight springs 99 in the inner major arc groove 111 are blown. Due to the guiding effect of the inner major arc groove 111, the straight springs 99 in the inner major arc groove 111 slide along the inner major arc groove 111 at a relatively high speed. Similarly, part of the compressed air injected into the inner major arc groove 111 also flows along the inner major arc groove 111. Specifically, the straight springs 99 generate centrifugal force due to inertia, but due to the blocking and guiding of the bottom of the inner major arc groove 111 on the straight springs 99, the straight springs 99 run along the bottom of the inner major arc groove 111. Moreover, when the straight springs 99 run to the upper part of the inner major arc groove 111, the centrifugal force overcomes the gravity. Then, subsequently, the straight springs 99 can reach the discharge interface 102 under the drive of the compressed air. Since the discharge interface 102 is connected to the spring conveying pipe 98, the straight springs 99 can slide along the spring conveying pipe 98. For example, as Figure 6 shown in the figure, the material distribution mechanism can be arranged on one side below the sorting bin 1. The lower end of the spring conveying pipe 98 is connected to the upper end of the spring buffer bin 96 of the material distribution mechanism. The spring buffer bin 96 is provided with a vertically arranged channel that can only allow a single straight spring 99 to slide. Then, the straight springs 99 are arranged axially end to end in the above channel. Therefore, the straight spring feeding device of the present invention can sort the scattered straight springs 99 into a queue for output. The blocking piece of the material distribution mechanism blocks the straight springs 99 from falling downward. When the mold on the turntable rotates to the corresponding position below the spring buffer bin 96 through the cam divider, the feeding cylinder 94 of the material distribution mechanism drives the spring buffer bin 96 to move down close to the above mold. The cutting cylinder 95 of the material distribution mechanism drives the blocking piece away from the above channel. Then, the lowermost straight spring 99 will fall into the fuse housing of the above mold. Then, the cutting cylinder 95 drives the blocking piece to reset and intercept the straight springs 99 in the above channel, and the feeding cylinder 94 drives the spring buffer bin 96 to move up. As mentioned above, since the inner major arc groove 111 matches the outer diameter of the straight spring 99, the straight springs 99 can only fall into the inner major arc groove 111 one by one. That is to say, as Figure 4As shown, the width of the inner superior arc groove 111 is only slightly larger than the outer diameter of the straight spring 99. For example, the width of the inner superior arc groove 111 is 0.3 mm to 0.8 mm larger than the outer diameter of the straight spring 99; Compressed air is sprayed onto the lower end of the inner superior arc groove 111. Since the opening of the inner superior arc groove 111 communicates with the inner cavity of the sorting bin 1, the compressed air will also blow and even flip the straight spring 99 sinking at the bottom of the sorting bin 1, so that the straight spring 99 at the bottom of the sorting bin 1 can continuously adjust its orientation. Through the disorderly movement of the straight spring 99, the straight spring 99 can randomly fall into the lower part of the inner superior arc groove 111. Since the compressed air is concentratedly injected into the inner superior arc groove 111, the straight spring 99 falling into the inner superior arc groove 111 can be conveyed to the discharge interface 102; As Figure 5 shown, if a part of the straight springs 99 buckled together falls into the inner superior arc groove 111, when the straight springs 99 buckled together run to the upper part of the inner superior arc groove 111, they will fall down before reaching the upper end of the inner superior arc groove 111 due to the action of gravity. Specifically, because the part of the straight springs 99 buckled together located outside the inner superior arc groove 111 has a large friction force with the inner wall of the cylinder body 11, and because the part of the straight springs 99 buckled together located outside the inner superior arc groove 111 is not directly pushed by the compressed air, the running speed of the straight springs 99 buckled together is relatively slow. Therefore, the centrifugal force is not enough to offset the action of gravity, and they will fall back to the bottom of the sorting bin 1. In other words, compared with the prior art, the present utility model excludes the straight springs buckled together through the action of gravity, thus avoiding the blockage of the upper end (outlet end) of the inner superior arc groove 111 by the straight springs 99 buckled together. Therefore, the working stability of the straight spring feeding device of the present utility model is good, which is conducive to the stable progress of production.

[0023] Furthermore, as Figure 1 and Figure 4 shown, the first end cover 12 includes an upper plate 121 and a lower plate 122. The upper plate 121 and the lower plate 122 are respectively detachably installed on the cylinder body 11 through corresponding screws. In other words, the first end cover 12 is formed by splicing the upper plate 121 and the lower plate 122. The feeding port 103 is formed on the upper plate 121. Therefore, when it is necessary to change the specification of the straight spring 99 or to take out too many straight springs 99 buckled together, it is necessary to discharge all the straight springs 99 in the sorting bin 1. At this time, the lower plate 122 can be disassembled, so that a person's hand can reach into the sorting bin 1 through the end of the cylinder body 11, and then the straight spring 99 can be scooped out. Because the upper plate 121 and the lower plate 122 are independently installed, the upper plate 121 can remain in place when cleaning the sorting bin 1. An exhaust gap can be provided between the lower end of the upper plate 121 and the upper end of the lower plate 122.

[0024] Furthermore, as Figure 1 andFigure 4 As shown, the feeding port 103 is connected to a funnel 13. The funnel 13 is a sheet metal part. One end of the funnel 13 is installed on the upper plate 121 by screws. Thus, workers can put a relatively large amount of straight springs 99 into the funnel 13 each time. Then, the straight springs 99 fall into the feeding port 103 by gravity and then into the bottom of the sorting bin 1. This helps to reduce the number of feeding times and lighten the labor intensity of workers.

[0025] Furthermore, both the first end cover 12 and the second end cover 14 are set as transparent end covers. For example, both the first end cover 12 and the second end cover 14 are made of acrylic plates. This makes it convenient for workers to observe the operation inside the sorting bin 1 from the outside and also allows workers to see the remaining amount of straight springs 99 inside the sorting bin 1, which is beneficial for workers to replenish the straight springs 99 into the sorting bin 1 in a timely manner.

[0026] Furthermore, as Figures 1 to 4 shown, the straight spring feeding device of the present utility model further includes a support plate 2. The support plate 2 is formed with an observation window 201. The observation window 201 is circular and is aligned with the second end cover 14. The second end cover 14 is clamped between the support plate 2 and the cylinder body 11. Thus, one end of the sorting bin 1 provided with the first end cover 12 can be suspended. Screws are used to pass through the support plate 2 and the second end cover 14, and these screws are screwed to the rear end face of the cylinder body 11. The lower end of the support plate 2 is fixedly connected to the column. Since the outer shape of the sorting bin 1 is cylindrical and the end of the sorting bin 1 is a plane, it is convenient and stable to fix the end of the sorting bin 1.

[0027] Furthermore, as Figure 3 shown, an air inlet needle 1010 and a discharge pipe 1020 are inserted into the cylinder body 11. The air inlet needle 1010 and the discharge pipe 1020 are respectively arranged along the tangential direction of the inner superior arc groove 111. The outer end of the air inlet needle 1010 is connected to an air inlet interface 101, and the inner end of the air inlet needle 1010 is connected to the lower end of the inner superior arc groove 111. The outer end of the discharge pipe 1020 is provided with a discharge interface 102, and the inner end of the discharge pipe 1020 is connected to the upper end of the inner superior arc groove 111. More specifically, first, a circumferential groove is turned on the inner wall of the cylinder body 11, and then mounting holes are drilled on the outer wall of the cylinder body 11 along the tangential direction of the inner superior arc groove 111. Then, the processed air inlet needle 1010 and discharge pipe 1020 are respectively inserted into the above-mentioned mounting holes. In other words, the inner superior arc groove 111 is the superior arc part of the above-mentioned "circumferential groove". An air inlet interface 101 is screwed and installed at the outer end of the air inlet needle 1010. The air inlet interface 101 can specifically be an external thread elbow. The spring delivery pipe 98 can be a transparent flexible pipe. The upper end of the spring delivery pipe 98 is tightly sleeved outside the outer end of the discharge pipe 1020. By setting the air inlet needle 1010 and the discharge pipe 1020, the sorting bin 1 is easy to manufacture.

[0028] Further, as Figure 2 and Figure 4 shown, the inner superior arc grooves 111 are arranged axially. For example, the number of the inner superior arc grooves 111 is set to four, thus increasing the probability that the straight springs 99 in the sorting bin 1 fall into the inner superior arc grooves 111, enabling the sorting bin 1 to sort and output more straight springs 99 per unit time. Correspondingly, the number of channels of the above-mentioned material distribution mechanism is four, and the intercepting cylinder 95 drives the blocking piece to release four straight springs 99 onto the fuse cases on the jigs of the turntable at one time.

Claims

1. A straight spring feeding device, characterized in that: It includes a sorting bin (1), and the sorting bin (1) includes a cylinder body (11), a first end cover (12) and a second end cover (14). The axis of the cylinder body (11) is horizontally arranged. The first end cover (12) and the second end cover (14) are respectively covered at both ends of the cylinder body (11). An inner superior arc groove (111) matching the outer diameter of the straight spring (99) is formed on the inner wall of the cylinder body (11). The lower end of the inner superior arc groove (111) is connected to an air inlet interface (101), and the upper end of the inner superior arc groove (111) is connected to a discharge interface (102) for connecting a spring delivery pipe (98). The air inlet interface (101) and the discharge interface (102) are located outside the sorting bin (1). A feeding port (103) is formed on the first end cover (12).

2. The straight spring feeding device according to claim 1, characterized in that: The first end cover (12) includes an upper plate (121) and a lower plate (122). The upper plate (121) and the lower plate (122) are respectively detachably installed on the cylinder body (11) through corresponding fasteners. The feeding port (103) is formed on the upper plate (121).

3. The straight spring feeding device according to claim 2, wherein: The feeding port (103) is connected to a funnel (13).

4. The straight spring feeding device according to claim 1, characterized in that: Both the first end cover (12) and the second end cover (14) are provided as transparent end covers.

5. The straight spring feeding device according to claim 4, characterized in that: It further includes a support plate (2). The support plate (2) is formed with an observation window (201). The observation window (201) is aligned with the second end cover (14). The second end cover (14) is clamped between the support plate (2) and the cylinder body (11).

6. The straight spring feeding device according to claim 1, characterized in that: An air inlet needle (1010) and a discharge pipe (1020) are inserted into the cylinder body (11). The air inlet needle (1010) and the discharge pipe (1020) are respectively arranged along the tangential direction of the inner superior arc groove (111). The outer end of the air inlet needle (1010) is connected to the air inlet interface (101), and the inner end of the air inlet needle (1010) is connected to the lower end of the inner superior arc groove (111). The outer end of the discharge pipe (1020) is the discharge interface (102), and the inner end of the discharge pipe (1020) is connected to the upper end of the inner superior arc groove (111).

7. The straight spring feeding device according to claim 1, characterized in that: The inner superior arc grooves (111) are arranged axially.

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