CN210868361U

CN210868361U - PCB fixing device of SMT chip mounter

Info

Publication number: CN210868361U
Application number: CN201921286975.XU
Authority: CN
Inventors: 涂海涛; 王小峰; 黄志鹏
Original assignee: Shenzhen Haichuangjia Technology Co ltd
Current assignee: Shenzhen Haichuangjia Technology Co ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-06-26
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a PCB fixing device of an SMT chip mounter, in particular to the technical field of SMT chip mounters, comprising a workbench, wherein an active cavity is arranged inside the workbench, and a clamping mechanism is arranged inside the active cavity; the clamping mechanism comprises a sliding groove, a clamping plate and a positive and negative motor, the sliding groove is formed in the top of the workbench, the sliding groove is communicated with the movable cavity, the number of the clamping plate is two, a limit hole is formed in one side end of the clamping plate in a penetrating mode, the limit hole is matched with one end of the clamping plate, and a sliding block is fixedly arranged at the bottom of the clamping plate. The utility model discloses a be equipped with the fixture who comprises grip block, slider, positive and negative motor and lead screw isotructure, in the use, drive the lead screw through positive and negative motor and rotate, the lead screw drives the slider that is provided with reciprocal screw thread and removes, can realize fast the fixed to the PCB board, easy operation, convenient and fast is favorable to improving the device's work efficiency.

Description

PCB fixing device of SMT chip mounter

Technical Field

The utility model relates to a SMT chip mounter technical field, more specifically say, the utility model relates to a PCB fixing device of SMT chip mounter.

Background

Surface Mount Technology (SMT) is known as surface mount technology or surface mount technology. The surface-mounted device without pins or short leads is mounted on the surface of a Printed Circuit Board (PCB) or other substrates, and is usually subjected to reflow soldering or dip soldering by an SMT (surface mount technology) chip mounter to complete the chip mounting.

Patent application publication No. CN 106817852A's utility model discloses a PCB fixing device of SMT chip mounter, in this technical scheme, the sliding seat can freely slide or the card ends fixedly in the guide way, can adjust the position of lagging and fly leaf, the fly leaf is pegged graft in the lagging and can slide relative the lagging, thereby adapt to the position of sliding seat in the guide way, make fly leaf and lagging be in the coplanar, therefore, along with the adjustment of sliding seat, but the compoboard of first lagging and first fly leaf formation and the compoboard of second lagging and second fly leaf formation centre gripping rectangular shape's PCB, also can centre gripping irregularly shaped PCB, especially irregularly shaped PCB, thereby its application range quadrangle is wider.

However, in practical use, there are still many disadvantages, such as that although the device can clamp an irregular PCB, thereby increasing the adaptability of the device, the device fixes the PCB by bolts during use, and the fixing process is cumbersome, thereby reducing the working efficiency of the device.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a PCB fixing device of SMT chip mounter, through being equipped with the fixture who comprises grip block, the slider, positive and negative motor and lead screw isotructure, in the use, drive the lead screw through positive and negative motor and rotate, the lead screw drives the slider that is provided with reciprocal screw thread and removes, can realize fast fixing the PCB board, and the operation is simple, and is convenient and fast, and the work efficiency who is favorable to improving the device is favorable to improving, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a PCB fixing device of an SMT chip mounter comprises a workbench, wherein a movable cavity is formed in the workbench, and a clamping mechanism is arranged in the movable cavity;

fixture includes spout, grip block and positive and negative motor, the spout sets up at the workstation top, the spout is linked together with the activity chamber, the quantity of grip block sets up to two, grip block side end runs through and is equipped with spacing hole, spacing hole and grip block one end phase-match, two the equal fixed slider that is provided with in grip block bottom, slider and spout phase-match, two slider one side all runs through and is equipped with the screw, positive and negative motor passes through the bolt fastening and sets up in the inside one end of activity chamber, positive and negative motor output shaft tip fixedly connected with lead screw, lead screw one end and screw phase-match.

In a preferred embodiment, the cross section of each of the two clamping plates is shaped like an L, and the two clamping plates are arranged opposite to each other.

In a preferred embodiment, the threads in the two screw bore cavities are configured as reciprocal threads.

In a preferred embodiment, the inner side of the clamping plate is provided with a groove, the bottom of the inner cavity of the groove is fixedly provided with a telescopic rod, the top of the telescopic rod is fixedly provided with an extrusion plate, the top of the extrusion plate is fixedly provided with a cushion pad, the outer side of the extrusion plate is in sliding fit with the inner side wall of the groove, and the outer part of the telescopic rod is sleeved with a reset spring.

In a preferred embodiment, the number of the telescopic rods and the number of the return springs are both set to be a plurality, and two ends of the return springs are respectively attached to the bottoms of the extrusion plates at the corresponding ends and the bottoms of the inner cavities of the grooves.

In a preferred embodiment, two ends of the inner portion of the movable cavity are both fixedly provided with a supporting plate, two bearings are embedded in the supporting plates, and two ends of the lead screw are respectively connected with bearing inner rings penetrating through the corresponding ends.

In a preferred embodiment, the bottom of the clamping plate is embedded with a plurality of balls, and one end of each of the plurality of balls is in sliding fit with the top of the workbench.

In a preferred embodiment, the bottom of the workbench is provided with four legs, and four legs are fixedly arranged at four angular positions on the bottom of the workbench respectively.

The utility model discloses a technological effect and advantage:

1. compared with the prior art, the PCB fixing device has the advantages that the clamping mechanism composed of the clamping plate, the sliding block, the positive and negative motors, the lead screw and the like is arranged, in the using process, the positive and negative motors drive the lead screw to rotate, the lead screw drives the sliding block provided with the reciprocal threads to move, the PCB can be fixed quickly, the operation is simple, the convenience and the rapidness are realized, and the working efficiency of the PCB fixing device is improved;

2. the telescopic rod, the reset spring and the extrusion plate are arranged, so that a buffering effect can be achieved when the PCB is fixed, the PCB is prevented from being damaged due to the fact that the clamping plate has overlarge extrusion force, the integrity of the PCB is protected, and the extrusion plate carries out secondary extrusion on the PCB under the elastic force of the reset spring, so that the fixing effect of the PCB is further improved;

3. through being equipped with spacing hole, when the less PCB board of centre gripping size, can prevent to take place the displacement between two grip blocks to influence the effect of centre gripping, moreover, through being equipped with the ball, can reduce the frictional force between grip block and the workstation, make things convenient for the grip block to remove.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 4 is an enlarged view of a portion B of fig. 2 according to the present invention.

Fig. 5 is a sectional view of the structure of the holding plate of the present invention.

Fig. 6 is a schematic view of the slider structure of the present invention.

The reference signs are: the device comprises a workbench 1, a movable cavity 2, a clamping mechanism 3, a sliding chute 4, a clamping plate 5, a positive and negative motor 6, a limiting hole 7, a sliding block 8, a screw hole 9, a lead screw 10, a groove 11, a telescopic rod 12, an extrusion plate 13, a reset spring 14, a support plate 15, a bearing 16, a ball 17, a support leg 18 and a cushion pad 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The PCB fixing device of the SMT pick-and-place machine shown in fig. 1-6 comprises a workbench 1, wherein a movable cavity 2 is arranged inside the workbench 1, and a clamping mechanism 3 is arranged inside the movable cavity 2;

the clamping mechanism 3 comprises a sliding chute 4, two clamping plates 5 and a positive and negative motor 6, wherein the sliding chute 4 is arranged at the top of the workbench 1, the sliding chute 4 is communicated with the movable cavity 2, the number of the clamping plates 5 is two, a limiting hole 7 penetrates through one side end part of each clamping plate 5, the limiting hole 7 is matched with one end of each clamping plate 5, the bottoms of the two clamping plates 5 are fixedly provided with sliding blocks 8, the sliding blocks 8 are matched with the sliding chutes 4, one sides of the two sliding blocks 8 are respectively provided with a screw hole 9 in a penetrating manner, the positive and negative motor 6 is fixedly arranged at one end inside the movable cavity 2 through bolts, the end part of an output shaft of the positive and negative motor 6 is fixedly connected with a lead screw 10, and one end;

the cross sections of the two clamping plates 5 are both arranged in an L shape, and the two clamping plates 5 are oppositely arranged;

the threads in the inner cavities of the two screw holes 9 are arranged into mutually reverse threads;

a groove 11 is formed in the inner side of the clamping plate 5, a telescopic rod 12 is fixedly arranged at the bottom of an inner cavity of the groove 11, an extrusion plate 13 is fixedly arranged at the top of the telescopic rod 12, a cushion pad 19 is fixedly arranged at the top of the extrusion plate 13, the outer side of the extrusion plate 13 is in sliding fit with the inner side wall of the groove 11, and a return spring 14 is sleeved outside the telescopic rod 12;

the number of the telescopic rods 12 and the number of the return springs 14 are multiple, and two ends of each return spring 14 are respectively attached to the bottom of the corresponding extrusion plate 13 and the bottom of the inner cavity of the groove 11;

supporting plates 15 are fixedly arranged at two ends inside the movable cavity 2, bearings 16 are embedded inside the two supporting plates 15, and two ends of the lead screw 10 are respectively communicated with inner rings of the bearings 16 penetrating through corresponding ends;

the bottom of the clamping plate 5 is embedded with a plurality of balls 17, and one end of each of the plurality of balls 17 is in sliding fit with the top of the workbench 1;

the bottom of the workbench 1 is provided with four support legs 18, and the four support legs 18 are respectively fixedly arranged at four corners of the bottom of the workbench 1.

The specific implementation mode is as follows: when the PCB clamping device is used, firstly, the device is communicated with an external power supply, then a PCB is placed at the top of the workbench 1, the PCB is positioned between the two clamping plates 5, then the positive and negative motors 6 are started, the positive and negative motors 6 drive the screw rod 10 to rotate, the screw rod 10 rotates to drive the two slide blocks 8 to move in opposite directions, meanwhile, the two slide blocks 8 drive the clamping plates 5 to move in opposite directions and are attached to the outer sides of the PCB, when the PCB cannot move between the two clamping plates 5, the clamping mechanism 3 is shown to finish fixing the PCB, when the clamping plates 5 are contacted with the PCB, the PCB acts on the extrusion plate 13, the extrusion plate 13 moves towards the inner part of the groove 11, the extrusion plate 13 extrudes the telescopic rod 12 and the reset spring 14, the buffering effect can be achieved, the PCB is prevented from being damaged due to the overlarge extrusion pressure of the clamping plates 5, and the integrity of the PCB is protected, meanwhile, the extrusion plate 13 carries out secondary extrusion on the PCB under the elasticity of the reset spring 14, further increases the fixing effect of the PCB, through the arrangement of the clamping mechanism 3 consisting of the clamping plate 5, the slide block 8, the positive and negative motors 6, the lead screw 10 and the like, in the using process, the positive and negative motors 6 drive the lead screw 10 to rotate, the lead screw 10 drives the slide block 8 with the reciprocal threads to move, thus the fixing of the PCB can be realized rapidly, the operation is simple, convenient and rapid, the working efficiency of the device is improved, moreover, through the arrangement of the limiting hole 7, when the PCB with smaller size is clamped, the displacement between the two clamping plates 5 can be prevented, thereby the clamping effect is influenced, in addition, through the arrangement of the ball 17, the friction force between the clamping plate 5 and the workbench 1 can be reduced, the movement of the clamping plate 5 is convenient, and the embodiment particularly solves the problems in the using process, the device realizes fixing the PCB through the bolt, and the fixing process is complicated, thereby reducing the working efficiency problem of the device.

The utility model discloses the theory of operation:

referring to the attached drawings 1-6 of the specification, when in use, firstly, the device is communicated with an external power supply, then, a PCB is placed on the top of a workbench 1, the PCB is positioned between two clamping plates 5, then, the PCB is fixed through a clamping mechanism 3 to prevent the PCB from moving, through the clamping mechanism 3 which is composed of the clamping plates 5, a slide block 8, a positive and negative motor 6, a lead screw 10 and a lead screw 10, during the use process, the lead screw 10 is driven by the positive and negative motor 6 to rotate, the lead screw 10 drives the slide block 8 with the mutually reverse threads to move, the PCB can be fixed quickly, the operation is simple, convenient and quick, the working efficiency of the device is improved, in addition, through the arrangement of a telescopic rod 12, a reset spring 14 and an extrusion plate 13, when the PCB is fixed, the buffer effect can be achieved, the PCB is prevented from being damaged due to the overlarge extrusion degree of the clamping plates 5, be favorable to protecting the integrality of PCB board, moreover, stripper plate 13 carries out the secondary extrusion to the PCB board under reset spring 14's elasticity, further increases the fixed effect of PCB board, and simultaneously, through being equipped with spacing hole 7, when the less PCB board of centre gripping size, can prevent to take place the displacement between two grip blocks 5 to influence the effect of centre gripping, moreover, through being equipped with ball 17, can reduce the frictional force between grip block 5 and workstation 1, make things convenient for grip block 5 to remove.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a PCB fixing device of SMT chip mounter, includes workstation (1), its characterized in that: a movable cavity (2) is arranged in the workbench (1), and a clamping mechanism (3) is arranged in the movable cavity (2);

the clamping mechanism (3) comprises a chute (4), a clamping plate (5) and a positive and negative motor (6), the sliding chute (4) is arranged at the top of the workbench (1), the sliding chute (4) is communicated with the movable cavity (2), the number of the clamping plates (5) is two, a limit hole (7) is arranged at one side end part of each clamping plate (5) in a penetrating way, the limiting holes (7) are matched with one ends of the clamping plates (5), the bottoms of the two clamping plates (5) are both fixedly provided with sliding blocks (8), the sliding blocks (8) are matched with the sliding grooves (4), one side of each of the two sliding blocks (8) is provided with a screw hole (9) in a penetrating way, the positive and negative motor (6) is fixedly arranged at one end inside the movable cavity (2) through a bolt, the positive and negative motor (6) output shaft end fixedly connected with lead screw (10), lead screw (10) one end and screw (9) phase-match.

2. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: the cross sections of the two clamping plates (5) are all arranged in an L shape, and the two clamping plates (5) are arranged oppositely.

3. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: the threads in the inner cavities of the two screw holes (9) are arranged into mutually opposite threads.

4. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: grip block (5) inboard is provided with recess (11), recess (11) inner chamber bottom is fixed and is equipped with telescopic link (12), fixed stripper plate (13) that is equipped with in telescopic link (12) top, stripper plate (13) top is fixed and is equipped with blotter (19), stripper plate (13) outside and recess (11) inside wall slide and laminate, telescopic link (12) outside cover is equipped with reset spring (14).

5. The PCB fixing device of an SMT chip mounter according to claim 4, wherein: the number of the telescopic rods (12) and the number of the return springs (14) are multiple, and the two ends of each return spring (14) are respectively attached to the bottoms of the extrusion plates (13) at the corresponding ends and the bottoms of the inner cavities of the grooves (11).

6. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: the movable cavity is characterized in that supporting plates (15) are fixedly arranged at two ends inside the movable cavity (2), bearings (16) are embedded inside the supporting plates (15), and two ends of the lead screw (10) are respectively connected with inner rings of the bearings (16) penetrating through corresponding ends.

7. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: grip block (5) bottom is inlayed and is equipped with ball (17), the quantity of ball (17) sets up to a plurality ofly, and is a plurality of ball (17) one end all with workstation (1) top slip laminating.

8. The PCB fixing device of an SMT chip mounter according to claim 1, wherein: the bottom of the workbench (1) is provided with four support legs (18), the number of the support legs (18) is four, and the four support legs (18) are respectively fixedly arranged at four corners of the bottom of the workbench (1).