Terminal bending and cutting device

Abstract

The present invention provides a terminal bending and cutting device, comprising: a conveying track; a pair of bending mechanisms, comprising a bending drive part, a bending transmission part connected to the bending drive part, and a bending piece fixed on the bending transmission part, wherein a pressing piece is provided at the end of the bending piece, and the pressing pieces provided by the bending mechanisms move relative to or oppositely; a pair of bending positioning assemblies are provided between the pair of bending mechanisms, the bending positioning assemblies comprising a positioning block and a bending positioning driving member for driving the positioning block, the upper surface of the positioning block forms an inclined surface, the inclined surfaces provided by the pair of bending positioning assemblies respectively form an angle with the outer surface of the pair of pressing pieces, and the angle of the angle is greater than the bending angle of the terminal; a cutting mechanism; through the relative or opposite movement of the pressing pieces provided by the pair of bending mechanisms, the terminals are bent in different directions and angles, and at the same time, the inclined surfaces provided by the bending positioning assemblies respectively form an angle with the outer surface of the pair of pressing pieces, which facilitates precise bending of the terminals.

Description

Technical Field

[0001] The invention relates to the technical field of terminal forming, and in particular to a terminal bending and cutting device. Background Art

[0002] In the field of electronic component manufacturing, terminals are key components of connectors, and their processing accuracy directly affects the product's electrical performance and mechanical reliability. Traditional terminal processing mainly relies on manual operation or single-function equipment for bending and cutting, which is prone to inefficiency and poor consistency. As electronic products move towards miniaturization and high density, higher requirements are placed on terminal processing accuracy. Traditional processes are no longer able to meet modern production needs. Although existing automated equipment has improved production efficiency, it still has shortcomings in bending angle control. In particular, the problem of dimensional deviation caused by material springback has not been effectively solved.

[0003] According to Chinese patent CN114632888A, a universal power terminal bending device is disclosed. The device includes a base plate, a feeding mechanism disposed on the base plate, a terminal bending mechanism, and a terminal cutting mechanism, wherein the terminal bending mechanism is disposed between the feeding mechanism and the terminal cutting mechanism. The terminal bending mechanism includes a matching terminal bending assembly and a terminal pressing assembly, which are used to compress and bend the terminal. However, during the actual bending of the terminal, the terminal itself has stress, making it difficult for the device to accurately control the bending angle during the bending process, and the bending angle may be insufficient or excessive. Furthermore, when some terminals are molded with plastic parts, the spacing between the terminals is small, making it difficult for the device to bend these terminals in different directions and angles.

[0004] In view of these problems, it is urgent to develop a terminal bending and cutting device to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a terminal bending and cutting device with precise bending.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a terminal bending and cutting device, comprising:

[0007] Conveying track for conveying terminals;

[0008] A pair of bending mechanisms, comprising a bending drive unit, a bending transmission unit connected to the bending drive unit, and a bending member fixed to the bending transmission unit, wherein the bending member extends toward the conveying track and has a pressing piece at the end thereof, and the pressing pieces provided on the pair of bending mechanisms move relative to or in opposite directions;

[0009] The bending drive portion includes a bending drive cylinder and a bending drive rack driven by the bending drive cylinder, the bending drive cylinder drives the bending drive rack to move, the bending transmission portion includes a transmission bearing, and the opposite sides of the transmission bearing are provided with connecting protrusions, the pair of connecting protrusions are staggered, and the pair of connecting protrusions have opposite sides, the bending member and the pressing sheet are respectively fixed to the opposite sides of the pair of connecting protrusions, and the end face of the transmission bearing is fixedly connected with a transmission gear, which is located above the bending drive rack and meshes with the bending drive rack;

[0010] A pair of bending positioning assemblies are provided between the pair of bending mechanisms, the bending positioning assemblies comprising a positioning block and a bending positioning driving member for driving the positioning block, the upper surface of the positioning block forming an inclined surface, the pressing piece being placed on one side of the terminal, the inclined surface being located on the other side of the terminal, the inclined surfaces provided on the pair of bending positioning assemblies respectively forming an angle with the outer surfaces of the pair of pressing pieces;

[0011] The bending and positioning assembly further includes a folding portion, the folding portion including a folding drive portion and a transmission rod connected to the folding drive portion, the other end of the transmission rod being connected to the positioning block, the folding drive portion pushing the positioning block to move through the transmission rod to change the angle formed between the upper surface of the positioning block and the pressing sheet;

[0012] The cutting mechanism cuts the bent terminals.

[0013] Furthermore, the angle formed by the inclined surface and the pressing sheet is an obtuse angle.

[0014] Furthermore, the cutting mechanism includes an upper cutting assembly and a lower cutting assembly, and the upper cutting assembly and the lower cutting assembly move relative to each other or move in opposite directions to cut the terminals.

[0015] Furthermore, the upper cutting assembly includes an upper cutter body and a pressure block movably connected to the upper cutter body. The upper cutter body has a receiving hole passing through its upper and lower surfaces. The pressure block is movably arranged in and always remains in the receiving hole. The end of the pressure block can expose the lower surface of the upper cutter body.

[0016] Furthermore, the lower cutting assembly includes a support member, which has a first through groove formed by being recessed inward from the top end surface and a second through groove formed by being recessed inward from the bottom side surface, the first through groove and the second through groove are connected, a linkage block is provided in the first through groove, a pair of lower cutting tools are fixedly connected to the top of the linkage block, and a pushing block is provided in the second through groove, the pushing block pushes the linkage block and its lower cutting tool to move vertically.

[0017] Furthermore, a distance sensor is installed on the surface of the positioning block to determine the distance between the terminal surface and the inclined surface.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the present invention is a terminal bending and cutting device with the characteristics of precise bending. Through the relative or opposite movement of the pressing plates provided by a pair of bending mechanisms, the terminals are bent in different directions and angles respectively. At the same time, the inclined surfaces provided by the bending positioning assembly form angles with the outer surfaces of a pair of pressing plates, which facilitates precise bending of the terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a terminal bending and cutting device according to the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the conveying track of the terminal bending and cutting device shown;

[0022] Figure 3 for Figure 2 A schematic diagram of the partial structure of the conveying track of the terminal bending and cutting device shown;

[0023] Figure 4 for Figure 1 A schematic diagram of the partial structure of the bending mechanism of the terminal bending and cutting device shown;

[0024] Figure 5 for Figure 4 A schematic diagram of the partial structure of the bending mechanism of the terminal bending and cutting device shown in FIG.

[0025] Figure 6 for Figure 1 A schematic diagram of a partial three-dimensional structure of the bending mechanism of the terminal bending and cutting device shown;

[0026] Figure 7 for Figure 6 A front view of the bending mechanism of the terminal bending and cutting device shown;

[0027] Figure 8 for Figure 1 The schematic diagram of the cutting mechanism structure of the terminal bending and cutting device shown;

[0028] Figure 9 for Figure 8 A schematic diagram of the partial structure of the cutting mechanism of the terminal bending and cutting device shown;

[0029] Figure 10 This is a schematic structural diagram of the folding portion of another embodiment of a terminal bending and cutting device of the present invention. DETAILED DESCRIPTION

[0030] To further illustrate the technical means and effectiveness of the present invention in achieving its intended objectives, the following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features, and effectiveness of the terminal bending and cutting device proposed in accordance with the present invention. In the following description, references to "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0031] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0032] The specific scheme of the terminal bending and cutting device provided by the present invention is described in detail below with reference to the accompanying drawings.

[0033] Please see Figures 1 to 9 The present invention is a terminal bending and cutting device, which includes a platform 1, a bracket 2 installed on the platform 1, a conveying track 3 provided on the bracket 2 and passing through the bracket 2, a bending mechanism 4 surrounding the conveying track 3, and a cutting mechanism 5 located on one side of the bending mechanism 4.

[0034] Please see Figure 1 The platform 1 is in a horizontal state and is used to support the bracket 2, the conveying track 3, the bending mechanism 4 and the cutting mechanism 5.

[0035] Please see Figure 1 The bracket 2 includes a first bracket 21 and a second bracket 22 arranged relatively parallel to each other. The bottoms of the first bracket 21 and the second bracket 22 are fixedly connected to the upper surface of the bracket 2, and the tops thereof extend vertically upward. The first bracket 21 and the second bracket 22 both have mounting holes 23 passing through the surfaces on both sides thereof. The diameter of the mounting hole 23 changes according to needs. The mounting hole 23 of the first bracket 21 and the mounting hole 23 of the second bracket 22 are arranged relative to each other.

[0036] Please see Figures 2 to 3The conveying track 3 includes a support seat 31, a track body 32 fixedly connected to the support seat 31, and a track groove 33 formed inwardly recessed from the surface of the track body 32. The support seat 31 is a pair, which are respectively located on the outside of the first bracket 21 and the second bracket 22. The bottom thereof is fixedly connected to the upper surface of the bracket 2, and the top thereof extends vertically upward and is fixedly connected to the track body 32. The track body 32 passes through the mounting hole 23, and its two ends are connected to the support seat 31. The track groove 33 is formed inwardly recessed from the upper surface of the track body 32. Specifically, the track groove 33 includes an upper groove 331 and a lower groove 332. The upper groove 331 is formed inwardly recessed from the upper surface of the track body 32, and the lower groove 332 is formed inwardly recessed from the bottom surface of the upper groove 331. The spacing of the lower groove 332 is smaller than the spacing of the upper groove 331.

[0037] Furthermore, the track body 32 has a clearance groove 333 formed by being recessed inward from the upper surface. The clearance groove 333 is perpendicular to the track groove 33. Both ends of the clearance groove 333 pass through the two side surfaces of the track body 32 to facilitate the insertion of the bending mechanism 4.

[0038] Please see Figures 4 to 7 The bending mechanism 4 is provided with a pair, which are respectively installed on the first bracket 21 and the second bracket 22, and include a bending drive part 41, a bending transmission part 42 connected to the bending drive part 41, and a bending member 43 fixedly connected to the bending transmission part 42. The bending drive part 41 includes a bending drive cylinder 411 and a bending drive rack 412 pushed by the bending drive cylinder 411. A rack track 413 is laid under the bending drive rack 412, and the bottom of the rack track 413 is installed on the platform 1. The bending drive cylinder 411 pushes the bending drive rack 412 to move along the rack track 413, and the meshing direction of the bending drive rack 412 is arranged upward.

[0039] The bending transmission unit 42 includes a transmission bearing 421 and a transmission gear 422. The transmission bearing 421 is disposed within the mounting hole 23 and has a groove 423 formed inwardly from its outer surface. The groove 423 surrounds the transmission bearing 421 and houses balls 424 therein. The balls 424 roll in contact with the transmission bearing 421 and the inner wall of the mounting hole 23, respectively. The transmission gear 422 is fixed to the outer end surface of the transmission bearing 421, located above the bending drive rack 412, and meshes with the bending drive rack 412. The inner end surface of the transmission bearing 421 is provided with a connecting protrusion 425. One end of the connecting protrusion 425 is fixedly connected to the transmission bearing 421, and the other end extends axially.

[0040] The transmission bearing 421 and the transmission gear 422 both have a clearance hole 426 , and the center of the clearance hole 426 and the center of the mounting hole 23 are coaxial.

[0041] The bending part 43 is fixed on the connecting protrusion 425, and the other end extends radially and is provided with a pressing piece 44 at the end. The diameter of the end of the bending part 43 connected to the connecting protrusion 425 is larger than the diameter of the radially extending end, that is, the diameter of the bending part 43 gradually decreases with the radial extension. One end of the pressing piece 44 is connected to the end of the bending part 43, and the other end extends vertically toward the track groove 33.

[0042] Specifically, the bending parts 43 of a pair of bending mechanisms 4 are arranged opposite to each other, and the connecting protrusions 425 are axially extended from the opposite side of the transmission bearing 421. The pair of connecting protrusions 425 are staggered, and the pair of connecting protrusions 425 have opposite sides. The bending parts 43 and the pressing pieces 44 are fixed to the opposite sides of the pair of connecting protrusions 425. The bending parts 43 and the pressing pieces 44 of a pair of bending mechanisms 4 have opposite sides. The bending parts 43 and the pressing pieces 44 of a pair of bending mechanisms 4 fit and resist each other so that the end of the pressing piece 44 is aligned with the track groove 33.

[0043] Please see Figure 5 The bending mechanism 4 further includes a bending positioning assembly 45 , and the number of the bending positioning assembly 45 is a pair, which are respectively installed on both sides of the conveying track 3 , and the pair of bending positioning assemblies 45 are arranged opposite to each other.

[0044] The bending positioning assembly 45 includes a positioning block 451, a connecting block 452 connecting the positioning block 451, and a bending positioning driver 453 for driving the positioning block 451 and the connecting block 452. The positioning block 451 is located on the outside of the pressing plate 44. Its end surface near the conveying track 3 is recessed inward to form a plurality of steps 4511. The steps 4511 are used to prevent the positioning block 451 from interfering with the conveying track 3. The upper surface of the positioning block 451 forms an inclined surface 4512. The inclined surface 4512 forms an obtuse angle with the pressing plate 44. In this embodiment, the top of the connecting block 452 is connected to the positioning block 451, and the bottom extends vertically downward. A bending positioning track 554 is laid on the upper surface of the platform 1. The bottom of the connecting block 452 is movably connected to the bending positioning track 554. The bending positioning driver 453 pushes the connecting block 452 and the positioning block 451 to move along the bending positioning track 554, so that the positioning block 451 enters or exits the track groove 33.

[0045] Please see Figures 8 and 9 The cutting mechanism 5 includes an upper cutting component 51 and a lower cutting component 52.

[0046] The upper cutting assembly 51 includes an upper cutting drive 511 and an upper cutting tool 512 driven by the upper cutting drive 511. A support plate 513 is mounted on the top of the first bracket 21 and the second bracket 22. One end of the support plate 513 extends above the conveyor track 3. The upper cutting drive 511 is fixed to the support plate 513. The upper cutting tool 512 is located below the support plate 513. The upper cutting drive 511 drives the upper cutting tool 512 to move vertically toward or away from the conveyor track 3. Specifically, the upper cutting tool 512 includes an upper cutting tool body 5121 and a pressure block 5122 movably connected to the upper cutting tool body 5121. The upper cutting tool body 5121 has a receiving hole 5123 extending through its upper and lower surfaces. The pressure block 5122 is movably disposed in and always remains in the receiving hole 5123. The end of the pressure block 5122 can expose the lower surface of the upper cutting tool body 5121.

[0047] The lower cutting assembly 52 includes a lower cutting driving member 521 and a lower cutting tool 522 driven by the lower cutting driving member 521 . A support member 523 is installed on the upper surface of the platform 1. The bottom of the support member 523 is fixedly connected to the platform 1, and the top extends vertically upward. The support member 523 has a first through groove 524 formed inwardly from the top end surface and a second through groove 525 formed inwardly from the bottom side. The first through groove 524 and the second through groove 525 are connected. A linkage block 526 is provided in the first through groove 524. A pair of lower cutting tools 522 are fixedly connected to the top of the linkage block 526. A connecting rod 527 is provided at the bottom, and a pushing block 528 is provided in the second through groove 525. A connecting hole 529 is provided at the end of the pushing block 528. The connecting hole 529 is a long hole with one end higher and the other end lower. The connecting rod 527 extends into the connecting hole 529. The lower cutting drive member 521 drives the pushing block 528 to move along the second through groove 525, so that the connecting rod 527 moves obliquely in the connecting hole 529, driving the linkage block 526 and its lower cutting tool 522 to move vertically.

[0048] Collection baskets 53 are provided on both sides of the lower cutting assembly 52 , and the collection baskets 53 are used to collect the waste materials after cutting.

[0049] Please see Figure 10 In another embodiment, the bending positioning assembly 45 also includes a reflexion portion 454, the reflexion portion 454 includes a reflexion drive portion 4541 and a transmission rod 4542 connected to the reflexion drive portion 4541, the reflexion drive portion 4541 is fixedly connected to the connecting block 452, one end of the transmission rod 4542 is connected to the reflexion drive portion 4541, and the other end is connected to the positioning block 451, the reflexion drive portion 4541 pushes the positioning block 451 to move through the transmission rod 4542, and changes the angle formed between the upper surface of the positioning block 451 and the pressing sheet 44. Preferably, a distance sensor 455 is installed on the surface of the positioning block 451 for determining the distance between the terminal surface and the distance sensor 455 (inclined surface 4512).

[0050] When the terminal bending and cutting device of the present invention is used, the terminal and its plastic parts are transported to the conveying track 3 through a cylinder or a vibration plate, so that the plastic parts are placed in the track groove 33. A pair of terminals are in a vertical state and continue to move along the track groove 33 toward the bending mechanism 4 and the cutting mechanism 5.

[0051] When the terminal and its plastic component move to the position of the bending mechanism 4, a pair of pressing plates 44 are positioned between the pair of terminals. The bending positioning driver 453 pushes the connecting block 452 and the positioning block 451 along the bending positioning track 554, causing the positioning block 451 to enter the track groove 33 and clamp the plastic component. At the same time, the end face of the positioning block 451 contacts the outer surface of the terminal. The bending driver 41 drives the pressing plate 44 via the transmission bearing 421 and transmission gear 422, causing the pressing plate 44 to rotate toward the inclined surface 4512 of the positioning block 451, squeezing the terminal and causing it to deform. Due to the stress in the terminal itself, the movement angle of the pressing plate 44 is greater than 90 degrees. After the terminal is bent, the pressing plate 44 and the positioning block 451 return to their original path, and the terminal and its plastic component continue to move toward the cutting mechanism 5.

[0052] When the terminal and its plastic parts move to the position of the cutting mechanism 5, the upper cutting drive 511 drives the upper cutting tool 512 to move, the pressing block 5122 first presses the plastic part, and the lower cutting drive 521 drives the lower cutting tool 522 to move close to the upper cutting tool 512. The upper cutting tool 512 and the lower cutting tool 522 move relative to each other to cut the bent terminal. The upper cutting tool 512 and the lower cutting tool 522 return to the original path, and the cut waste falls into the collection basket 53. The cut products continue to move to the next process.

[0053] In another embodiment, after the terminal is bent, the distance sensor 455 determines whether the distance between the terminal surface and the distance sensor 455 (the inclined surface 4512 ) meets the standard. If the bending angle of the terminal is too large, the reverse bending drive unit 4541 pushes the positioning block 451 to move through the transmission rod 4542 to reversely bend the terminal.

[0054] The present invention is a terminal bending and cutting device with the characteristic of precise bending. Through the relative or opposite movement of the pressing plates provided by a pair of bending mechanisms, the terminals are bent in different directions and angles. At the same time, the inclined surfaces provided by the bending positioning assembly form angles with the outer surfaces of the pair of pressing plates, which facilitates precise bending of the terminals.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal bending and cutting device, characterized in that: include: A conveying track (3) for conveying terminals; A pair of bending mechanisms (4), comprising a bending drive portion (41), a bending transmission portion (42) connected to the bending drive portion (41), and a bending member (43) fixed to the bending transmission portion (42), wherein the bending member (43) extends in the direction of the conveying track (3) and is provided with a pressing piece (44) at the end thereof, and the pressing pieces (44) provided on the pair of bending mechanisms (4) move relative to each other or in opposite directions; The bending drive portion (41) includes a bending drive cylinder (411) and a bending drive rack (412) driven by the bending drive cylinder (411), the bending drive cylinder (411) drives the bending drive rack (412) to move, the bending transmission portion (42) includes a transmission bearing (421), and a connecting protrusion (425) is provided on the opposite side of the transmission bearing (421). The pair of connecting protrusions (425) are staggered and have opposite sides. The bending member (43) and the pressing sheet (44) are respectively fixed to the opposite sides of the pair of connecting protrusions (425). The end face of the transmission bearing (421) is fixedly connected with a transmission gear (422), which is located above the bending drive rack (412) and meshes with the bending drive rack (412). A pair of bending positioning assemblies (45) are provided between the pair of bending mechanisms (4), the bending positioning assemblies (45) comprising a positioning block (451) and a bending positioning driving member (453) for driving the positioning block (451), an upper surface of the positioning block (451) forming an inclined surface (4512), the pressing piece (44) being placed on one side of the terminal, and the inclined surface (4512) being located on the other side of the terminal, and the inclined surfaces (4512) provided on the pair of bending positioning assemblies (45) respectively forming angles with the outer surfaces of the pair of pressing pieces (44); The bending positioning assembly (45) further includes a folding portion (454), the folding portion (454) including a folding drive portion (4541), a transmission rod (4542) connected to the folding drive portion (4541), the other end of the transmission rod (4542) being connected to the positioning block (451), the folding drive portion (4541) pushing the positioning block (451) to move via the transmission rod (4542), thereby changing the angle formed between the upper surface of the positioning block (451) and the pressing sheet (44); A cutting mechanism (5) cuts the bent terminals.

2. The terminal bending and cutting device according to claim 1, characterized in that: The angle formed by the inclined surface (4512) and the pressing sheet (44) is an obtuse angle.

3. The terminal bending and cutting device according to claim 1, characterized in that: The cutting mechanism (5) comprises an upper cutting component (51) and a lower cutting component (52); the upper cutting component (51) and the lower cutting component (52) move relative to or oppositely to each other to cut the terminals.

4. The terminal bending and cutting device according to claim 3, characterized in that: The upper cutting assembly (51) includes an upper cutter body (5121) and a pressing block (5122) movably connected to the upper cutter body (5121), wherein the upper cutter body (5121) has a receiving hole (5123) penetrating the upper and lower surfaces thereof, and the pressing block (5122) is movably arranged in and always remains in the receiving hole (5123), and the end of the pressing block (5122) can expose the lower surface of the upper cutter body (5121).

5. The terminal bending and cutting device according to claim 4, characterized in that: The lower cutting assembly (52) includes a support member (523), the support member (523) having a first through groove (524) formed by being recessed inward from the top end surface and a second through groove (525) formed by being recessed inward from the bottom side surface, the first through groove (524) and the second through groove (525) being connected, a linkage block (526) being provided in the first through groove (524), a pair of lower cutting knives (522) being fixedly connected to the top of the linkage block (526), ​​a pushing block (528) being provided in the second through groove (525), the pushing block (528) pushing the linkage block (526) and the lower cutting knives (522) to move vertically.

6. The terminal bending and cutting device according to claim 1, characterized in that: A distance sensor (455) is mounted on the surface of the positioning block (451) for determining the distance between the terminal surface and the inclined surface (4512).

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