Pin bending mechanism and insertion machine

Abstract

The present invention discloses a pin bending mechanism and an insertion machine, which belong to the technical field of bending mechanisms, and include a support seat, a rotating plate and a bending portion, wherein the bending portion is composed of two bending claws rotatably mounted on the rotating plate. The synchronous rotation of the bending claws is achieved through the ingenious connection of the sliding rod and the connecting rod, and the sliding rod does not contact the support seat during the rotation process, thereby ensuring the bending accuracy. In addition, the support claws installed on the bending claws can rotate synchronously with the pins, and through the mutual offset of the up and down movements, the ends of the support claws can achieve horizontal lateral movement, which significantly improves the bending effect. The insertion machine of the present invention integrates the above-mentioned pin bending mechanism, and is equipped with a positioning table and a feeder, which can directly bend the pins after the electronic components are inserted into the circuit board, thereby improving work efficiency. The rotatable design of the rotating plate enables flexible adjustment of the bending angle, thereby avoiding the problem of difficult angle adjustment in the traditional method.

Description

Technical Field

[0001] The invention relates to the technical field of bending mechanisms, and in particular to a pin bending mechanism and an insertion machine. Background Art

[0002] As a key equipment in the electronics manufacturing industry, the core function of the insertion machine is to accurately install electronic components on the circuit board. The key step of this process is to accurately pass the pins of the components through the circuit board, and to bend the pins through subsequent processes to achieve a firm fixation. However, the traditional method is inefficient because it involves multiple processes, and the bending process of the pins is often limited to the movement of a single plane and the non-adjustable angle, which makes it difficult to meet complex installation requirements. At the same time, conventional bending devices generally achieve bending by rotating a single bending claw. This rotation of the bending claw may result in the pins not being bent in place, making it impossible for the pins to be firmly installed on the circuit board. To this end, the present invention provides a pin bending mechanism and an insertion machine that solve the above problems. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a pin bending mechanism and an insertion machine, which can realize arbitrary rotation and improve the pin bending effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a pin bending mechanism, including a support seat, and also including:

[0005] A rotating plate, the rotating plate is rotatably mounted on the supporting seat;

[0006] A bending portion, wherein the bending portion comprises two bending claws, and the two bending claws are rotatably mounted on a rotating plate;

[0007] Among them, a second hinge shaft is rotatably installed on the bending claw, and a sliding rod capable of reciprocating motion is installed inside the rotating plate. The sliding rod corresponds to the bending claw one by one, and a connecting rod is hinged at the end of the sliding rod. The end of the connecting rod away from the sliding rod is hinged to the second hinge shaft, a gap is left between the support seat and the rotating plate, and an annular groove is opened inside the support seat, and the end of the sliding rod away from the connecting rod extends to the inside of the annular groove, and a pressure plate is slidably installed inside the annular groove, and the movement of the pressure plate can drive the axial sliding of the sliding rod.

[0008] Preferably, an elastomer is sleeved in the middle of the sliding rod, the elastomer is installed inside the rotating plate, a protrusion is provided on the sliding rod, the elastomer rests on the protrusion, a clamping plate is installed at one end of the sliding rod extending into the annular groove, and the projections of the clamping plate and the pressure plate in the moving direction of the pressure plate have overlapping parts.

[0009] Preferably, a guide column is fixed inside the annular groove, the extension direction of the guide column is the same as the extension direction of the slide rod, and the guide column passes through the pressure plate.

[0010] Preferably, a third hinge shaft is rotatably mounted on the end of the bending portion, and a supporting claw is fixed on the third hinge shaft.

[0011] Preferably, a first gear is fixed on the second hinge shaft, a second gear is fixed on the third hinge shaft, and the first gear and the second gear are connected via a hinge.

[0012] Preferably, the number of teeth of the first gear is greater than the number of teeth of the second gear.

[0013] Preferably, a roller is installed at the end of the claw.

[0014] Preferably, a hinge seat is fixed on the rotating plate, the first hinge shaft is installed on the hinge seat, and the bending claw is rotatably installed on the hinge seat through the first hinge shaft.

[0015] Preferably, a first speed gear is fixed on the rotating plate through a connecting shaft, a second speed gear is meshedly connected to one side of the first speed gear, a third speed gear is coaxially connected to the second speed gear, a fourth speed gear is meshedly connected to one side of the third speed gear, the number of teeth of the first speed gear is greater than that of the second speed gear, the number of teeth of the third speed gear is greater than that of the second speed gear, the number of teeth of the third speed gear is greater than that of the fourth speed gear, and a motor for driving the fourth speed gear is fixed inside the support seat.

[0016] An insertion machine, comprising the above-mentioned pin bending mechanism, further comprising:

[0017] A positioning platform, wherein the support seat is movably mounted on the positioning platform;

[0018] A feeder is capable of conveying electronic components onto the positioning table.

[0019] The beneficial effects of the present invention are:

[0020] Compared with the prior art which is "inefficient due to involving multiple working steps", the present invention mainly provides a solution of "installing the bending mechanism inside the bending machine", which specifically includes setting the bending mechanism at the bottom of the circuit board, and directly bending the pins of the electronic components after inserting the electronic components into the circuit board, thereby improving the working effect.

[0021] Compared with the "difficult angle adjustment" in the prior art, the present invention mainly provides a solution of "installing a rotatable turn plate on a support seat", which specifically includes integrating a bending claw during the installation of the turn plate to ensure that the two can work together. When the turn plate and the bending claw rotate together, the slide rod that drives the bending claw to rotate will pass through and embed into the support seat. During the entire process of rotation, the slide rod can avoid physical contact with other parts on the support seat, thereby reducing the negative impact that friction or collision may have on the accuracy of the bending claw. In addition, the mechanism also realizes the precise synchronous rotation of the two bending claws, thereby improving the bending effect.

[0022] Compared with the existing technology that "a single bending claw is bent but the bending is not in place", the present invention mainly provides a solution of "installing a rotatable claw on the bending claw, and contacting the pin through the claw", which specifically includes that the downward movement of the bending claw and the upward movement of the claw offset part of the vertical displacement, so that the end of the claw contacting the pin can maintain horizontal lateral movement as much as possible. This movement mode significantly improves the bending effect and ensures the accuracy of the bending operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the bending mechanism.

[0024] Figure 2 This is an internal cross-sectional view of the bending mechanism.

[0025] Figure 3 It is a partial connection cross-sectional view of the support seat and the rotating plate of the present invention.

[0026] Figure 4 It is an internal view of the bending claw of the present invention.

[0027] Figure 5 This is a partial schematic diagram of the plug-in machine.

[0028] In the figure: 1, support seat, 101, annular groove, 102, guide column, 2, rotating plate, 3, bending claw, 4, positioning table, 5, sliding rod, 501, clamping plate, 6, pressure plate, 7, elastic body, 8, supporting claw, 9, first hinge shaft, 10, first gear, 11, second gear, 12, hinge, 13, second hinge shaft, 14, connecting rod, 15, third hinge shaft, 16, connecting shaft, 17, first speed gear, 18, second speed gear, 19, third speed gear, 20, fourth speed gear, 21, feeder. DETAILED DESCRIPTION

[0029] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0030] Embodiment 1

[0031] like Figure 1-Figure 4As shown, in this embodiment, a pin bending mechanism is provided, including a support seat 1, the support seat 1 is a device for supporting the pin bending mechanism, the pin bending mechanism is installed on the support seat 1, and also includes a rotating plate 2 and a bending portion.

[0032] The rotating plate 2 is rotatably mounted on the supporting seat 1 , and the rotation of the rotating plate 2 can adjust the rotation angle of the pin bending mechanism.

[0033] The bending part includes two bending claws 3, and both bending claws 3 are rotatably mounted on the rotating plate 2. The bending claws 3 are designed as a "7"-shaped structure and are mounted on the middle of the rotating plate 2 through a first hinge shaft 9, thereby realizing linkage with the rotating plate 2. When the rotating plate 2 rotates, the bending claws 3 will follow it, and the rotation angle is completely determined by the rotation degree of the rotating plate 2. This layout not only ensures that the bending claws 3 are firmly supported, but also enables the ends of the bending claws 3 to accurately align and perform the bending operation of the pins.

[0034] Among them, a second hinge shaft 13 is rotatably installed on the bending claw 3, and the second hinge shaft 13 is installed at the turning point of the "7"-shaped bending structure. This bending structure is composed of two sections of connecting arms fixedly connected to each other, and the joining point is exactly the joining point of the two sections of the bending claws 3. The connecting arm located at the upper part of the structure has the main function of performing precise bending operations on the pins; and the other section of the connecting arm is rotatably installed on the rotating plate 2. A sliding rod 5 capable of reciprocating motion is installed inside the rotating plate 2. The sliding rod 5 corresponds to the bending claw 3 one by one. The end of the sliding rod 5 is hinged with a connecting rod 14. The end of the connecting rod 14 away from the sliding rod 5 is hinged to the second hinge shaft 13. The reciprocating motion of the sliding rod 5 can drive the bending claw 3 to rotate on the rotating plate 2 and perform clamping and opening actions. A gap is left between the support seat 1 and the rotating plate 2. This gap ensures that the friction between the rotating plate 2 and the support seat 1 is reduced during the rotation process, so that the rotating plate 2 can rotate arbitrarily, and the inside of the support seat 1 An annular groove 101 is provided, and one end of the slide bar 5 away from the connecting rod 14 extends to the inside of the annular groove 101. Although one end of the slide bar 5 extends into the internal space of the annular groove 101, in the process of the rotating plate 2 driving the slide bar 5 to rotate, there is no contact between the slide bar 5 and the inner wall of the annular groove 101, ensuring that the relative movement between the two is frictionless and smooth. A pressure plate 6 is installed inside the annular groove 101 for sliding. The movement of the pressure plate 6 can drive the axial sliding of the slide bar 5. During the movement of the pressure plate 6, the rotating plate 2 needs to be in a fixed state. The pressure plate 6 is designed and installed on the inner side of the rotating slide bar 5, and it does not directly contact the surface of the slide bar 5 under normal conditions. Only when the pressure plate 6 slides downward under the action of external force, it will contact the slide bar 5, and in this process, it will synchronously pull the slide bar 5 to move downward together. No matter where the slide bar 5 is moved to, the movement of the pressure plate 6 can ensure that the slide bar 5 can achieve smooth axial sliding.

[0035] In addition, during the rotation of the slide bar 5 along with the rotating plate 2, its motion trajectory is closely around the outside of the pressing plate 6, forming a rotational motion centered on the pressing plate 6. It is worth noting that during the entire rotation process, the slide bar 5 and the pressing plate 6 always maintain a constant distance, ensuring that there is no contact between the two.

[0036] Embodiment 2

[0037] like Figure 1-Figure 4 As shown, based on the first embodiment, this embodiment provides a driving method of the bending claw 3, which is as follows:

[0038] The middle part of the slide bar 5 is sleeved with an elastic body 7, which is installed inside the rotating plate 2. The slide bar 5 is provided with a protrusion, and the elastic body 7 is against the protrusion. Under the elastic force of the elastic body 7, the slide bar 5 is given a potential energy to slide upward, so that the protrusion on it is closely attached to and supported on the inner wall of the rotating plate 2. Only when the slide bar 5 encounters downward external pressure, it will overcome the elastic force generated by the elastic body 7 and then slide downward. The end of the slide bar 5 extending into the annular groove 101 is installed with a card plate 501. The projections of the card plate 501 and the pressure plate 6 in the moving direction of the pressure plate 6 have overlapping parts. This design ensures that when the pressure plate 6 moves in a specific direction (sliding downward), the card plate 501 can be indirectly prompted to move synchronously through its structural design, even if there is no direct physical contact between the pressure plate 6 and the card plate 501. In addition, the pressure plate 6 and the card plate 501 are both designed as annular plates, and a certain gap is maintained between them. Such a layout ensures that the two are always separated from each other during operation.

[0039] A guide column 102 is fixed inside the annular groove 101. The extension direction of the guide column 102 is the same as the extension direction of the slide rod 5. The guide column 102 passes through the pressure plate 6, and the pressure plate 6 is slidably installed on the guide column 102. The guide column 102 guides the pressure plate 6 to prevent the pressure plate 6 from shaking left and right.

[0040] The end of the bending portion is rotatably mounted with a third hinge shaft 15, on which a claw 8 is fixed, which is a component for contacting the pin. During the bending operation, the claw 8 is first moved to the inner side of the pin. Then, the bending claw 3 begins to rotate outward, during which the claw 8 not only keeps in contact with the pin, but also moves outward synchronously. This coordinated outward movement exerts an effective bending force on the pin, thereby completing the bending of the pin.

[0041] The first gear 10 is fixed on the second hinge shaft 13, the second gear 11 is fixed on the third hinge shaft 15, and the first gear 10 and the second gear 11 are connected by a hinge 12. When the sliding rod 5 uses the connecting rod 14 mechanism to cause the bending claw 3 to rotate, it will be accompanied by a dynamic change in the angle between the connecting rod 14 and the bending claw 3. This angle change cleverly realizes the transmission and conversion of the rotation energy of the first gear 10, which not only drives the rotation of the second gear 11 and the supporting claw 8, but also causes the supporting claw 8 to produce a specific angle change relative to the bending claw 3.

[0042] The number of teeth of the first gear 10 is greater than the number of teeth of the second gear 11. When the first gear 10 rotates only a small angle, due to the characteristics of gear transmission, this small movement will be amplified and transmitted to the second gear 11, causing it to rotate a relatively large angle. In turn, the rotation of the second gear 11 drives the movement of the claw 8 through a certain mechanical structure (such as the hinge 12).

[0043] A roller is installed at the end of the claw 8. As a rotatable component, the roller's rotational characteristics can significantly reduce direct friction between the pin and the pin when in contact with the pin. This feature enables the roller to transmit the force more smoothly and effectively when applying bending force to the pin, thereby greatly reducing the risk of damage to the pin due to excessive friction.

[0044] Embodiment 3

[0045] like Figure 2 and Figure 3 As shown, based on the first and second embodiments, this embodiment provides a driving method of the rotating plate 2, which is as follows:

[0046] A hinge seat is fixed on the rotating plate 2, and the first hinge shaft 9 is installed on the hinge seat. The bending claw 3 is rotatably installed on the hinge seat through the first hinge shaft 9. The hinge seat is fixedly installed at the center of the surface of the rotating plate 2 to ensure that the position of the bending mechanism will not change when the rotating plate 2 rotates. If the position needs to be changed, the position of the support seat 1 needs to be changed.

[0047] A first speed tooth 17 is fixed to the rotating plate 2 through a connecting shaft 16, one side of the first speed tooth 17 is meshedly connected with a second speed tooth 18, the second speed tooth 18 is coaxially connected with a third speed tooth 19, one side of the third speed tooth 19 is meshedly connected with a fourth speed tooth 20, the number of teeth of the first speed tooth 17 is greater than the number of teeth of the second speed tooth 18, the number of teeth of the third speed tooth 19 is greater than the number of teeth of the second speed tooth 18, the number of teeth of the third speed tooth 19 is greater than the number of teeth of the fourth speed tooth 20, and a motor for driving the fourth speed tooth 20 is fixed inside the support seat 1, and a plurality of speed teeth can form a set of reduction gear sets, which can more accurately control the rotation angle of the connecting shaft 16 through the motor.

[0048] Embodiment 4

[0049] like Figure 5 As shown, based on the first to third embodiments, this embodiment provides a plug-in machine, which is as follows:

[0050] The pin bending mechanism also includes: a positioning table 4 and a feeder 21. The support seat 1 is movably mounted on the positioning table 4. The support seat 1 can move arbitrarily on the positioning table 4 to align the pins of the electronic components; it can transport the electronic components to the top of the positioning table 4.

[0051] Working principle:

[0052] The pin bending mechanism is installed on the positioning platform of the insertion machine. First, the circuit board is transferred to the predetermined position between the bending mechanism and the feeder 21. Then, the feeder 21 accurately delivers the electronic component to the precise coordinates to be inserted, ensuring that the pins of the electronic component can smoothly penetrate the circuit board. At this time, the bending mechanism moves accurately to the bottom of the electronic component under the guidance of the positioning platform.

[0053] Next, by rotating the rotating plate 2, the position of the claw 8 is adjusted so that the pin is just located outside the claw 8 on the bending mechanism. Then, the oil cylinder is started to drive the pressing plate 6 to move slowly downward. During the process of the pressing plate 6 descending, it pulls the two slide bars 5 to slide downward synchronously, causing the slide bars 5 to drive the bending claw 3 to rotate outward when sliding downward.

[0054] At the same time, the connection between the connecting rod 14 and the bending claw 3 ensures the synchronization of the angle change, which further drives the rotation of the first gear 10. The first gear 10 transmits power to the second gear 11 through the precise cooperation of the hinge 12, causing it to rotate synchronously. Finally, the rotation of the second gear 11 drives the claw 8 to rotate outward, bends the pins, and firmly locks the electronic components on the circuit board, completing the entire plug-in process.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pin bending mechanism, comprising a support seat (1), characterized in that: Also includes: A rotating plate (2), the rotating plate (2) being rotatably mounted on the supporting seat (1); A bending portion, the bending portion comprising two bending claws (3), and the two bending claws (3) are both rotatably mounted on the rotating plate (2) via a first hinge shaft (9); The bending claw (3) is rotatably mounted with a second hinge shaft (13), the rotating plate (2) is internally mounted with a slide bar (5) capable of reciprocating motion, the slide bar (5) corresponds to the bending claw (3) one by one, the end of the slide bar (5) is hinged with a connecting rod (14), the end of the connecting rod (14) away from the slide bar (5) is hinged with the second hinge shaft (13), a gap is left between the support seat (1) and the rotating plate (2), and an annular groove (101) is provided inside the support seat (1), the end of the slide bar (5) away from the connecting rod (14) extends to the inside of the annular groove (101), and a pressure plate (6) is slidably mounted inside the annular groove (101), and the movement of the pressure plate (6) can drive the slide bar (5) to slide axially; A third hinge shaft (15) is rotatably mounted on the end of the bent portion, and a support claw (8) is fixed on the third hinge shaft (15); A first gear (10) is fixed on the second hinge shaft (13), a second gear (11) is fixed on the third hinge shaft (15), and the first gear (10) and the second gear (11) are connected via a hinge (12).

2. A pin bending mechanism according to claim 1, characterized in that: An elastic body (7) is sleeved in the middle of the slide bar (5), and the elastic body (7) is installed inside the rotating plate (2). A protrusion is provided on the slide bar (5), and the elastic body (7) abuts against the protrusion. A clamping plate (501) is installed at one end of the slide bar (5) extending into the annular groove (101), and the projections of the clamping plate (501) and the pressure plate (6) in the moving direction of the pressure plate (6) have overlapping parts.

3. A pin bending mechanism according to claim 2, characterized in that: A guide column (102) is fixed inside the annular groove (101), the extension direction of the guide column (102) is the same as the extension direction of the slide bar (5), and the guide column (102) passes through the pressure plate (6).

4. A pin bending mechanism according to claim 1, characterized in that: The number of teeth of the first gear (10) is greater than the number of teeth of the second gear (11).

5. A pin bending mechanism according to claim 1, characterized in that: A roller is installed at the end of the supporting claw (8).

6. A pin bending mechanism according to claim 1, characterized in that: An articulated seat is fixed on the rotating plate (2), the first articulated shaft (9) is mounted on the articulated seat, and the bending claw (3) is rotatably mounted on the articulated seat via the first articulated shaft (9).

7. A pin bending mechanism according to claim 1, characterized in that: A first speed gear (17) is fixed to the rotating plate (2) via a connecting shaft (16); a second speed gear (18) is meshedly connected to one side of the first speed gear (17); a third speed gear (19) is coaxially connected to the second speed gear (18); a fourth speed gear (20) is meshedly connected to one side of the third speed gear (19); the number of teeth of the first speed gear (17) is greater than the number of teeth of the second speed gear (18); the number of teeth of the third speed gear (19) is greater than the number of teeth of the second speed gear (18); the number of teeth of the third speed gear (19) is greater than the number of teeth of the fourth speed gear (20); and a motor for driving the fourth speed gear (20) is fixed inside the support seat (1).

8. An insertion machine, characterized in that: The method comprises the pin bending mechanism according to any one of claims 1 to 7, further comprising: A positioning platform (4), wherein the support seat (1) is movably mounted on the positioning platform (4); A feeder (21) is capable of conveying electronic components to the top of the positioning table (4).

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