Cutting mechanism of capacitor forming machine

Abstract

The utility model discloses a cutting mechanism of a capacitor forming machine, which comprises a base, a material guide groove used for placing capacitor raw materials is arranged on the base, and a plurality of capacitor raw materials are sequentially and vertically arranged in the material guide groove; one side of the guide groove is provided with a traction device which is in butt joint with the capacitor raw materials and drives the capacitor raw materials to be conveyed forwards; an upper cutter and a lower cutter which are used for cutting the capacitor elements are respectively arranged on the material guide groove at intervals; pushing and cutting devices are arranged on the sides, away from the bending station, of the upper cutter and the lower cutter, and the pushing and cutting devices are used for pushing capacitor raw materials to the upper cutter and the lower cutter to cut pins at the two ends, clamping the cut capacitor elements, pushing the capacitor elements away from the guide groove towards the sides, close to the bending station, of the upper cutter and the lower cutter, and continuously pushing the capacitor elements towards the bending station; according to the utility model, cutting and conveying are combined into the same mechanism, so that unnecessary actions and equipment are reduced, and the processing efficiency is greatly improved; and the equipment is more compact, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor production and processing equipment, in particular to a cutting mechanism of a capacitor forming machine. Background Art

[0002] Tantalum capacitor is a capacitor whose dielectric is tantalum metal oxide. Tantalum capacitors have the advantages of high capacity density, high stability, low ESR (equivalent series resistance), low leakage current, etc., and are widely used in electronic products, especially in circuits with high performance and high stability requirements, such as communication equipment, computers, medical equipment and other fields. Common tantalum capacitors can be divided into direct plug-in type and surface mount type according to the way they are used. They are mainly selected according to the size and space of the installed product. Surface mount tantalum capacitors are more used in mobile phones, new energy vehicle processing and other fields.

[0003] refer to Figure 1 Generally, the manufacturing of SMD tantalum capacitors is usually done by fixing the capacitor element on a strip lead frame to form a strip capacitor material. The lead frame is provided with multiple positioning holes distributed along its length. During the processing, the lead frame is convenient for fixing and protecting the tantalum capacitor for cutting, bending, testing and other operations. The cut lead frame is referenced Figure 2 The existing tantalum capacitor processing production line usually uses cutting to separate the capacitors on the lead frame for subsequent processing steps such as bending, forming and testing. However, in traditional capacitor processing equipment, the processing efficiency of capacitor cutting is low, the processing cost is high, and the overall structure is complex, which requires more equipment space and is not conducive to the optimization of the processing production line.

[0004] Therefore, further research and development is needed to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0005] Therefore, in order to solve the problems existing in the above-mentioned prior art, the purpose of the present utility model is to provide a cutting mechanism for a capacitor forming machine.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A cutting mechanism of a capacitor forming machine is used to cut and separate capacitor elements on a lead frame of a strip capacitor raw material and convey it to a bending station; the capacitor element comprises a body and pins at both ends of the body; the cutting mechanism comprises a base, the base is provided with a guide trough for placing capacitor raw materials, and a plurality of capacitor raw materials are arranged vertically in the guide trough in sequence; a traction device is provided on one side of the guide trough for docking with the capacitor raw material and driving the capacitor raw material to be conveyed forward; an upper cutter and a lower cutter for cutting the capacitor element are respectively provided on the guide trough at intervals; a push-cutting device is provided on the side of the upper cutter and the lower cutter away from the bending station, the push-cutting device is used to push the capacitor raw material toward the upper cutter and the lower cutter to cut the pins at both ends, and clamp the capacitor element that has been cut to push it away from the guide trough toward the side of the upper cutter and the lower cutter close to the bending station, and continue to move toward the bending station.

[0008] Furthermore, the traction device includes a traction sprocket arranged on one side of the material guide trough and a traction drive device for driving the traction sprocket to rotate. The outer periphery of the traction sprocket is provided with a plurality of protrusions that are engaged and transmission connected with the lead frame of the capacitor raw material at intervals, so that the rotating traction sprocket can drive the lead frame to move forward.

[0009] Furthermore, the pushing and cutting device includes a capacitor clamping block and a pushing and cutting driving device that drives the capacitor clamping block to reciprocate; the vertical height of the capacitor clamping block is adapted to the distance between the blades of the upper cutter and the lower cutter, and the clamping opening of the capacitor clamping block is adapted to the body length of the capacitor element; the capacitor clamping block clamps the capacitor element through the blades of the upper cutter and the lower cutter to complete the cutting of the pins on both sides of the capacitor element body.

[0010] Furthermore, the capacitor clamping block is a frame-type clamping block with a clamping opening on one side, and the clamping opening is provided with limiting parts adapted to the pins of the capacitor element on the upper and lower sides respectively, the body of the capacitor element is located in the clamping opening, and the pins at both ends of the body are respectively fitted on the corresponding limiting parts.

[0011] Furthermore, the push-cutting drive device includes a driving motor and a connecting rod group that is transmission-connected to the output shaft of the driving motor, the connecting rod group includes a first connecting rod and a second connecting rod that are rotationally connected to each other; the first connecting rod is transmission-connected to the capacitor clamping block, the second connecting rod is transmission-connected to the output shaft of the driving motor, the driving motor drives the second connecting rod to rotate, and drives the capacitor clamping block to reciprocate through the first connecting rod.

[0012] Furthermore, the connecting rod group includes a buffer connecting rod connected to the output shaft of the driving motor, and the buffer connecting rod is provided with an elastic buffer extending along its length direction. One end of the elastic buffer is fixed to one end of the buffer connecting rod close to the driving motor, and the other end is fixed to the second connecting rod. The buffer connecting rod is provided with a buffer through groove for accommodating the elastic buffer.

[0013] Furthermore, the elastic buffer is a compression spring.

[0014] Furthermore, a waste recovery device for placing the lead frame after capacitor cutting is provided at the end of the material guide trough; a waste conveying device for pulling the lead frame toward the waste recovery device is provided at one end of the material guide trough close to the waste recovery device.

[0015] Furthermore, the waste conveying device includes two traction rollers arranged at one end of the material guide trough close to the waste recovery device for pulling the lead frame toward the waste recovery device, and the two traction rollers rotate simultaneously and clamp the lead frame to move toward the waste recovery device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model provides a reciprocating pushing and cutting device and a reasonable combination of a cutter and a material guide trough, so that during the process of the capacitor raw material being conveyed by the material guide trough, the pin cutting of the capacitor element is completed synchronously, and the capacitor element that has been cut is clamped and pushed away from the material guide trough from one side of the material guide trough, and continues to be pushed toward the bending station; the actions of capacitor cutting and conveying to the bending station can be well combined and processed, and the cutting action and the conveying action are combined together, so that the whole processing process becomes more coherent, and at the same time, the cutting and conveying are combined into the same mechanism, which reduces unnecessary actions and equipment and greatly improves the processing efficiency; further, since the cutting and conveying actions are combined, there is no need to design an independent conveying device, which greatly reduces the overall volume and floor space of the processing equipment, makes the equipment more compact, and is suitable for places with limited space, thereby improving the application breadth of the equipment; improving the equipment utilization rate and reducing the cost;

[0018] 2. The material guide trough and traction device in the utility model are reasonably designed, which can effectively transport the capacitor raw materials to the bending station, and the cutting action is completed during the transportation process, which not only saves time, but also improves the material guiding efficiency, and reduces or avoids the operation delay caused by the coordination problem between the mechanisms because the cutting and conveying actions need to be separated and carried out by independent mechanisms;

[0019] 3. The utility model uses a traction device and a push-cut device, so that the capacitor raw material can be moved in a more stable and consistent manner in the material guide trough. The clamping action of the push-cut device ensures that the capacitor element can be accurately pushed out of the material guide trough and remains stable when it continues to be pushed toward the bending station. This efficiency improvement can not only increase production speed, but also reduce downtime caused by displacement or blockage during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the capacitor raw material of the capacitor forming machine of the preferred embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the local structure of the capacitor forming machine of the preferred embodiment of the utility model after the capacitor raw material is partially cut;

[0022] Figure 3 This is a schematic diagram of the overall structure of the cutting mechanism of the capacitor forming machine of the preferred embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the cutting mechanism of the capacitor forming machine of the preferred embodiment of the utility model from another angle;

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram in the middle;

[0025] Figure 6 This is a schematic diagram of the overall structure of a capacitor forming machine according to a preferred embodiment of the utility model.

[0026] In the figure:

[0027] 1. Base; 11. Material guide trough; 2. Traction device; 21. Traction sprocket; 211. Lug; 22. Traction drive device; 3. Upper cutter; 4. Lower cutter; 5. Push-cut device; 51. Capacitor clamping block; 511. Clamping port; 512. Position limiting part; 52. Push-cut drive device; 521. Drive motor; 522. Connecting rod group; 5221. First connecting rod; 5222. Second connecting rod; 5223. Buffer connecting rod; 5224. Buffer slot; 6. Elastic buffer; 7. Waste recovery device; 8. Waste conveying device; 81. Traction roller;

[0028] 10. Capacitor raw material; 101. Lead frame; 1011. Positioning hole; 102. Capacitor element; 1021. Body; 1022. Pin; 20. Bending station. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the utility model, the technical solutions and advantages of the utility model are further described in detail below in conjunction with the accompanying drawings and embodiments. The specific structure and characteristics are described below in an exemplary manner, which should not constitute any limitation to the utility model. At the same time, any of the technical features mentioned below (including implicit or disclosed), as well as any technical features directly displayed or implied in the figure, can continue to be arbitrarily combined or deleted between these technical features, so as to form more other embodiments that may not be directly or indirectly mentioned in the utility model. The preferred implementation of the utility model is given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the implementation described herein. On the contrary, the purpose of providing these implementations is to make the understanding of the disclosure of the utility model more thorough and comprehensive.

[0030] like Figure 1-6 As shown, a cutting mechanism of a capacitor forming machine is used to cut and separate the capacitor element 102 on the lead frame 101 of the strip capacitor raw material 10 and convey it to a bending station; specifically, the capacitor element 102 includes a body 1021 and pins 1022 located at both ends of the body 1021; the lead frame 101 is a rectangular metal strip structure, and a plurality of the capacitor elements 102 are linearly arranged and welded on the lead frame 101; the bending station is mainly used to bend the pins toward the body 1021 of the capacitor element 102 from a vertical direction; the bending station 20 is arranged at an adjacent position to the cutting station; the cutting mechanism includes a base 1, and the base 1 is provided with a guide groove 11 for placing the capacitor raw material 10, and a plurality of capacitor raw materials 10 are arranged vertically in the material guide trough 11 in sequence; in this embodiment, the capacitor raw materials 10 are arranged in sequence means that the lead frame 101 is horizontally erected in the material guide trough 11, and the two end pins of the capacitor element 102 are respectively located at the upper and lower ends of the body 1021; one side of the material guide trough 11 is provided with a traction device 2 for docking with the capacitor raw material 10 and driving the capacitor raw material 10 to be transported forward; further refined, the traction device 2 includes a traction sprocket 21 arranged on one side of the material guide trough 11 and a traction drive device 22 for driving the traction sprocket 21 to rotate, and the outer periphery of the traction sprocket 21 is provided with a plurality of protrusions 211 that are engaged and transmission-connected with the lead frame 101 of the capacitor raw material 10, so that the rotating traction sprocket 21 drives the lead frame 101 to move forward. In this embodiment, the lead frame 101 is provided with a plurality of positioning holes 1011 arranged in a straight line, and the positioning holes 1011 are engaged with the protrusions 211 on the outer periphery of the traction sprocket 21. When the traction sprocket 21 rotates, the lead frame 101 and the capacitor element 102 can be pulled and moved forward and transported through the engagement of the plurality of protrusions 211 with the positioning holes 1011.

[0031] The guide trough 11 is provided with an upper cutter 3 and a lower cutter 4 for cutting the capacitor element 102 at intervals; a pushing device 5 is provided on the side of the upper cutter 3 and the lower cutter 4 away from the bending station, and the pushing device 5 is used to push the capacitor raw material 10 toward the upper cutter 3 and the lower cutter 4 to cut the pins at both ends, and clamp the capacitor element 102 that has been cut and push it away from the guide trough 11 toward the side of the upper cutter 3 and the lower cutter 4 close to the bending station, and continue to move toward the bending station.

[0032] Specifically, the push-cut device 5 includes a capacitor clamping block 51 and a push-cut driving device 52 for driving the capacitor clamping block 51 to reciprocate; the vertical height of the capacitor clamping block 51 is adapted to the distance between the blades of the upper cutter 3 and the lower cutter 4, and the clamping opening 511 of the capacitor clamping block 51 is adapted to the length of the body 1021 of the capacitor element 102; the capacitor clamping block 51 is a frame-shaped clamping block with a clamping opening 511 on one side, and the clamping opening 511 The upper and lower sides are respectively provided with limiting parts 512 adapted to the pins 1022 of the capacitor element 102, the body 1021 of the capacitor element 102 is located at the clamping mouth 511, and the pins at both ends of the body 1021 are respectively attached to the corresponding limiting parts 512; the capacitor clamping block 51 clamps the capacitor element 102 and passes between the blades of the upper cutter 3 and the lower cutter 4 to complete the cutting of the pins 1022 on both sides of the body 1021 of the capacitor element 102.

[0033] During the cutting process, the capacitor material can be fixed by inserting and positioning the positioning pins (not shown in the drawings) set on the frame into the positioning holes 1011 of the capacitor material, and the position of the capacitor material can be pushed to the corresponding positioning pins and positioning holes by the power of the pushing and cutting device.

[0034] In this embodiment, the cutting edges of the upper cutter 3 and the lower cutter 4 respectively correspond to the parts of the pins at both ends of the capacitor element 102 that need to be cut. When the capacitor element 102 passes between the upper cutter 3 and the lower cutter 4 under the push of the pushing and cutting device 5, it continues to move toward the bending station, that is, the cutting and conveying actions are completed synchronously.

[0035] In this embodiment, by setting a reciprocating pushing and cutting device 5 and a reasonable combination of a cutter and a material guide trough 11, the capacitor raw material 10 can simultaneously complete the pin cutting of the capacitor element 102 and clamp the cut capacitor element 102 from one side of the material guide trough 11 to push it away from the material guide trough 11 and continue to move toward the bending station during the conveying process of the material guide trough 11; the actions of capacitor cutting and conveying to the bending station can be well combined and processed, and the cutting action and the conveying action can be combined together, so that the whole processing process becomes more coherent, and the cutting and conveying are combined into the same mechanism, thereby reducing unnecessary actions and equipment and greatly improving the processing efficiency; further, since the cutting and conveying actions are combined, there is no need to design an independent conveying equipment, which greatly reduces the overall volume and floor space of the processing equipment, makes the equipment more compact, and is suitable for places with limited space, thereby increasing the application breadth of the equipment; improves equipment utilization and reduces costs.

[0036] Preferably, the pushing and cutting drive device 52 includes a driving motor 521 and a connecting rod group 522 that is transmission-connected to the output shaft of the driving motor 521, and the connecting rod group 522 includes a first connecting rod 5221 and a second connecting rod 5222 that are rotationally connected to each other; the first connecting rod 5221 is transmission-connected to the capacitor clamping block 51, and the second connecting rod 5222 is transmission-connected to the output shaft of the driving motor 521, and the driving motor 521 drives the second connecting rod 5222 to rotate, and drives the capacitor clamping block 51 to reciprocate through the first connecting rod 5221. Specifically, the output shaft of the driving motor 521 drives the second connecting rod 5222 to rotate horizontally. Since the first connecting rod 5221 and the second connecting rod 5222 are connected in rotation, the horizontally rotating second connecting rod 5222 pulls the first connecting rod 5221 to drive the capacitor clamping block 51 to move in a direction away from the guide groove 11, converting the rotational motion into a linear motion. At the same time, a vibration shutdown sensing device (not shown in the accompanying drawings) for sensing the vibration of the capacitor clamping block 51 is provided at the connection between the second connecting rod 5222 and the first connecting rod 5221. In this embodiment, the vibration shutdown sensing device can be a vibration sensor in the prior art. The specific structure, working principle, and setting form can all refer to the prior art. After the vibration of the capacitor clamping block 51 is transmitted to the sensing device, it can receive the vibration and transmit the signal to the control module of the device (not shown in the accompanying drawings), thereby controlling the driving motor 521 to stop, reducing the damage to the machine caused by the vibration of the push cutting device 5.

[0037] Preferably, the connecting rod group 522 includes a buffer connecting rod 5223 connected to the output shaft of the driving motor 521, and the buffer connecting rod 5223 is provided with an elastic buffer 6 extending along its length direction, one end of the elastic buffer 6 is fixed to one end of the buffer connecting rod 5223 close to the driving motor 521, and the other end is fixed to the second connecting rod 5222, and the buffer connecting rod 5223 is provided with a buffer through groove 5224 for accommodating the elastic buffer 6. Specifically, the elastic buffer 6 is a compression spring. When the vibration shutdown sensing device senses the vibration transmitted from the capacitor clamping block 51 and sends a signal, the compression spring can play a buffering role to further buffer the impact of the vibration on the driving motor 521. Extend the service life of the equipment.

[0038] Preferably, a waste material recovery device 7 for placing the lead frame 101 after capacitor cutting is provided at the end of the guide trough 11; a waste material conveying device 8 for pulling the lead frame 101 toward the waste material recovery device 7 is provided at one end of the guide trough 11 close to the waste material recovery device 7. Specifically, the waste material conveying device 8 includes two traction rollers 81 arranged at one end of the guide trough 11 close to the waste material recovery device 7 for pulling the lead frame 101 toward the waste material recovery device 7, and the two traction rollers 81 rotate simultaneously and clamp the lead frame 101 to move toward the waste material recovery device 7. In this way, the lead frame 101 after cutting can be conveyed to the waste material recovery device 7 for collection, and the degree of automation is high.

[0039] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this field, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cutting mechanism of a capacitor forming machine, used to cut and separate capacitor elements on a lead frame of a strip capacitor material and convey them to a bending station; the capacitor element comprises a body and pins at both ends of the body; characterized in that: The cutting mechanism includes a base, and a material guide trough for placing capacitor raw materials is provided on the base, and a plurality of capacitor raw materials are arranged vertically in the material guide trough in sequence; a traction device for docking with the capacitor raw materials and driving the capacitor raw materials to be transported forward is provided on one side of the material guide trough; an upper cutter and a lower cutter for cutting the capacitor elements are respectively provided on the material guide trough at intervals; a pushing and cutting device is provided on the side of the upper cutter and the lower cutter away from the bending station, and the pushing and cutting device is used to push the capacitor raw materials toward the upper cutter and the lower cutter to cut the pins at both ends, and clamp the capacitor element that has been cut and push it away from the material guide trough toward the side of the upper cutter and the lower cutter close to the bending station, and continue to move toward the bending station.

2. The cutting mechanism of the capacitor forming machine according to claim 1, characterized in that: The traction device includes a traction sprocket arranged on one side of the material guide trough and a traction drive device for driving the traction sprocket to rotate. The outer periphery of the traction sprocket is provided with a plurality of protrusions that are engaged and transmission connected with the lead frame of the capacitor material at intervals, so that the rotating traction sprocket drives the lead frame to move forward.

3. The cutting mechanism of the capacitor forming machine according to claim 2, characterized in that: The pushing and cutting device comprises a capacitor clamping block and a pushing and cutting driving device for driving the capacitor clamping block to reciprocate; the vertical height of the capacitor clamping block is adapted to the distance between the blades of the upper cutter and the lower cutter, and the clamping opening of the capacitor clamping block is adapted to the body length of the capacitor element; the capacitor clamping block clamps the capacitor element through the blades of the upper cutter and the lower cutter to complete the cutting of the pins on both sides of the capacitor element body.

4. The cutting mechanism of the capacitor forming machine as claimed in claim 3, characterized in that: The capacitor clamping block is a frame-type clamping block with a clamping opening on one side, and the clamping opening is provided with limiting parts adapted to the pins of the capacitor element on the upper and lower sides respectively. The body of the capacitor element is located in the clamping opening, and the pins at both ends of the body are respectively fitted on the corresponding limiting parts.

5. The cutting mechanism of the capacitor forming machine as claimed in claim 3, characterized in that: The push-cutting drive device includes a driving motor and a connecting rod group that is transmission-connected to the output shaft of the driving motor, the connecting rod group includes a first connecting rod and a second connecting rod that are rotationally connected to each other; the first connecting rod is transmission-connected to the capacitor clamping block, the second connecting rod is transmission-connected to the output shaft of the driving motor, the driving motor drives the second connecting rod to rotate, and drives the capacitor clamping block to reciprocate through the first connecting rod.

6. The cutting mechanism of the capacitor forming machine according to claim 5, characterized in that: The connecting rod group includes a buffer connecting rod connected to the output shaft of the driving motor, and the buffer connecting rod is provided with an elastic buffer extending along its length direction. One end of the elastic buffer is fixed to an end of the buffer connecting rod close to the driving motor, and the other end is fixed to the second connecting rod. The buffer connecting rod is provided with a buffer through groove for accommodating the elastic buffer.

7. The cutting mechanism of the capacitor forming machine according to claim 6, characterized in that: The elastic buffer is a compression spring.

8. The cutting mechanism of the capacitor forming machine according to claim 7, characterized in that: A waste material recovery device is provided at the end of the guide trough for placing the lead frame after capacitor cutting; a waste material conveying device is provided at one end of the guide trough close to the waste material recovery device for pulling the lead frame toward the waste material recovery device.

9. The cutting mechanism of the capacitor forming machine according to claim 8, characterized in that: The waste conveying device includes two traction rollers arranged at one end of the guide trough close to the waste recovery device for pulling the lead frame toward the waste recovery device. The two traction rollers rotate simultaneously and clamp the lead frame to move toward the waste recovery device.

Images