SMT patch conveying device and system

Abstract

The utility model provides an SMT (Surface Mount Technology) patch conveying device and system, and the device comprises a conveying mechanism which comprises a conveying support; a conveyor belt; the limiting assemblies are arranged on the two sides of the conveying belt in the width direction in pairs, and each limiting assembly comprises a supporting plate which extends in the length direction of the conveying belt and is fixed to the conveying support; the limiting plate is arranged on the supporting plate, a plurality of mounting grooves are formed in the surface, facing the conveying belt, of the limiting plate, pin shafts are arranged in the mounting grooves, and the axial direction of the pin shafts is perpendicular to the conveying direction; the guide wheel is rotationally arranged in the mounting groove by taking the pin shaft as a rotating shaft; the first electric telescopic rod is located on the side, away from the conveying belt, of the limiting plate and fixed to the conveying support, the movable end of the first electric telescopic rod is connected with the side, away from the conveying belt, of the limiting plate, and the first telescopic rod stretches out and draws back in the direction inclined to the conveying direction; and the controller is configured to control the conveying mechanism to start and control and adjust the distance between the limiting plate and the conveying belt when the plate is blocked. By adopting the device and the system, the occurrence of board clamping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to an SMT patch conveying device and system. Background Art

[0002] SMT (Surface Mount Technology) conveyors are used to transport PCBs from one workstation to another, ensuring a smooth process. Existing SMT conveyors typically include a conveyor section and baffles extending along the conveyor section. These baffles are prone to deformation after a period of use, leading to frequent PCB jams during conveyance and severely impacting production capacity. Utility Model Content

[0003] In response to the above problems, the present invention provides an SMT patch conveying device, comprising: a conveying mechanism, comprising: a conveying bracket; a conveyor belt, mounted on the conveying bracket and extending in a horizontal direction; a limit assembly arranged in pairs on both sides of the width direction of the conveyor belt, the limit assembly comprising: a support plate, fixed to the conveying bracket extending along the length direction of the conveyor belt; a limit plate, arranged on the support plate, a surface of the limit plate facing the conveyor belt having a plurality of mounting grooves formed thereon, a pin being arranged in the mounting groove, the axial direction of the pin being perpendicular to the conveying direction; a guide wheel, rotatably arranged in the mounting groove with the pin as a rotation axis; a first electric telescopic rod, located on a side of the limit plate away from the conveyor belt and fixed to the conveying bracket, the first electric telescopic rod comprising a first telescopic rod, a movable end of the first telescopic rod being connected to a side of the limit plate away from the conveyor belt, the first telescopic rod being telescopically extended in a direction oblique to the conveying direction; a controller, connected to the conveying mechanism and the first electric telescopic rod, the controller being further configured to: control the start-up of the conveying mechanism and, when a plate jam occurs, control the extension and retraction of the first electric telescopic rod to adjust the distance between the limit plate and the conveyor belt.

[0004] According to this technical solution, the provision of a limit plate can prevent items on the conveyor belt surface from detaching from the conveyor belt in the width direction of the conveyor belt. The provision of a guide wheel reduces friction with the items to be conveyed, thereby reducing the occurrence of jams. When the first electric telescopic rod is activated, the extension of the first telescopic rod can drive the limit plate toward the conveying mechanism, thereby reducing the distance between the limit plate and the conveying mechanism. The shortening of the first telescopic rod can drive the limit plate away from the conveying mechanism, thereby increasing the distance between the limit plate and the conveying mechanism. The provision of the first electric telescopic rod increases the flexibility of the position of the limit plate, thereby flexibly adjusting the position of the limit plate according to the conveying situation of the conveying mechanism for the items, reducing the occurrence of jams. The extension and retraction of the first electric telescopic rod is controlled by a controller, thereby improving the flexibility and automation level of the SMT patch conveying device.

[0005] In an optional technical solution of the present invention, each limiting assembly corresponds to one or more first electric telescopic rods.

[0006] According to this technical solution, one or more first electric telescopic rods can be set according to the length of the limiting component to improve the accuracy and flexibility of the position adjustment of the limiting component and ensure that the position of the limiting component can reduce the number of card jams.

[0007] The optional technical solution of the present invention also includes: light curtain sensors, which are arranged in pairs on both sides of the conveyor belt in the width direction, and the light curtain sensors are used to detect whether a card jam occurs. The light curtain sensors are connected to the controller, and the controller is configured to: record the number of card jams and the location where the card jams occur. When the number of card jams at the same location exceeds a specified threshold, the first telescopic rod is controlled to extend and retract to a specified stroke.

[0008] According to this technical solution, when the light source emitted by the light curtain sensor is blocked by objects on the surface of the conveyor belt for a long time, it can be determined that a jam has occurred. When jams occur frequently at the same position, the first electric telescopic rod is controlled to extend and retract to adjust the distance between the limit plate and the conveyor belt, thereby improving the conveying efficiency.

[0009] In the optional technical solution of the present invention, the SMT patch conveying device also includes: a base, which is fixed to the side of the conveying bracket away from the conveyor belt, the interior of the base is hollow, and a plurality of through-holes are formed on the side of the base away from the conveyor belt; a walking wheel, which is installed on the side of the base away from the conveyor belt; a plurality of first electric push rods, which are fixed in the base, and the movable end of the first electric push rod passes through the through-hole, and the telescopic stroke of the movable end of the first electric push rod is greater than the vertical distance between the movable end of the first electric push rod and the walking wheel; a plurality of supporting feet, which are respectively fixed to the movable ends of the first electric push rods passing through the through-holes.

[0010] According to this technical solution, the setting of the walking wheels improves the flexibility of the movement of the SMT patch conveyor device, and the setting of the first electric push rod can adjust the height of the SMT patch conveyor device, so that the height of the SMT patch conveyor device matches the height of the placement machines at both ends of the conveying direction, thereby improving the continuity of conveyance and reducing the occurrence of PCB board jams during conveyance.

[0011] The optional technical solution of the present invention also includes multiple connecting mechanisms installed on the conveying bracket, and the connecting mechanism includes: a second electric push rod, installed on the conveying bracket, the rod end of the second electric push rod is retracted along the extension direction of the conveyor belt, and the rod end can be extended to extend out of the conveying bracket; a magnetic plate, fixed to the rod end; a first adsorption head, fixed to the magnetic plate.

[0012] According to this technical solution, SMT patch conveying device is usually provided with patch machines on both sides of the conveying direction. The second electric push rod is started, and the rod end of the second electric push rod is extended along the extension direction of the conveyor belt until it extends out of the conveying bracket. The magnetic plate at the rod end can be fixed to the patch machine by magnetic attraction or can be fixed to the patch machine by vacuum attraction through the first adsorption head, thereby realizing the connection and fixation between the SMT patch conveying device and the patch machines on both sides, and ensuring the continuity of transportation.

[0013] The optional technical solution of the present invention also includes: a linear moving mechanism, which is arranged on a side opposite to the conveying surface of the conveyor belt in a manner of moving along the extension direction of the conveyor belt; a second electric telescopic rod, which is connected to the linear moving mechanism in a manner of sliding along the extension direction of the linear moving mechanism, and the second electric telescopic rod includes a second telescopic rod, and the second telescopic rod is telescoped between the linear moving mechanism and the conveyor belt; a second adsorption head is fixed to one end of the second telescopic rod close to the conveyor belt; a controller, which is connected to the second electric telescopic rod and the linear moving mechanism, and the controller is configured to: when a jam occurs, control the second electric telescopic rod to drive the second adsorption head to move toward the conveyor belt to adsorb the items conveyed by the conveyor belt, and control the linear moving mechanism to drive the second electric telescopic rod to slide.

[0014] According to this technical solution, the controller controls the activation of the linear moving mechanism and the second electric telescopic rod to adjust the telescopic length of the second electric telescopic rod and the position of the second electric telescopic rod in the extension direction of the conveyor belt, so that the second adsorption head connected to the second electric telescopic rod can adsorb the items on the conveyor belt and drive the items to move along the extension direction of the conveyor belt to a position where no jamming occurs, thereby reducing the occurrence of jamming and improving the conveying efficiency.

[0015] In an optional technical solution of the present invention, the linear motion mechanism includes: a first linear motion component, the motion direction of the first linear motion component is parallel to the extension direction of the conveyor belt; a second linear motion component is connected to the first linear motion component in a sliding manner relative to the first linear motion component, the motion direction of the second linear motion component is perpendicular to the extension direction of the conveyor belt; and a second electric telescopic rod is connected to the second linear motion component in a manner that can slide along the extension direction of the second linear motion component.

[0016] According to this technical solution, the second electric telescopic rod can move in the width direction of the conveyor belt with the movement of the second linear motion component, and the second linear motion component and the second electric telescopic rod connected thereto can move in the conveying direction with the movement of the first linear motion component, so that the second electric telescopic rod and the second adsorption head can be adjusted to the specified position of the conveyor belt according to actual working conditions, thereby improving the flexibility of the SMT patch conveying device.

[0017] The utility model further provides an SMT patch system, comprising a patch machine and the above-mentioned SMT patch conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the SMT patch conveying device in the first embodiment of the present utility model.

[0019] Figure 2 This is the first embodiment of the utility model Figure 1 Schematic diagram of the cross section along the AA line.

[0020] Figure 3 This is the first embodiment of the utility model Figure 1 Schematic diagram of the cross section along the middle BB line.

[0021] Figure 4 This is a schematic diagram of the connection relationship of the controller in the first embodiment of the present invention.

[0022] Figure 5 This is a schematic structural diagram of the SMT patch conveying device in the second embodiment of the present invention at a first viewing angle.

[0023] Figure 6 This is a structural schematic diagram of the SMT patch conveying device in the second embodiment of the present invention at a second viewing angle.

[0024] Reference numerals:

[0025] Conveying mechanism 1; limiting assembly 11; support plate 110; limiting plate 111; mounting slot; pin shaft 112; guide wheel 113; conveyor belt 12; conveying bracket 13; side portion 131; motor 141; driving wheel 142; driven wheel 143; first electric telescopic rod 15; linear moving mechanism 2; first linear motion assembly 21; second linear motion assembly 22; second electric telescopic rod 31; second adsorption head 32; controller 4; base 51; walking wheel 52; first electric push rod 53; movable end 531 of the first electric push rod; supporting foot 54; second electric push rod 61; first adsorption head 62; correction seat 7; column 71. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] [First embodiment]

[0028] like Figure 1 As shown, the first embodiment of the present invention provides an SMT patch conveying device, comprising: a conveying mechanism 1, a linear moving mechanism 2 (in Figure 2 ), the second electric telescopic rod 31, the second adsorption head 32 and the controller 4 ( Figure 4 The conveying mechanism 1 includes a pair of limiting components 11 (in Figure 3 ) and a conveyor belt 12 extending horizontally between the limit assembly 11; the linear moving mechanism 2 is arranged on the side opposite to the conveying surface of the conveyor belt 12 in a manner that moves along the conveying direction of the conveyor belt 12 (direction a, that is, the length direction or extension direction of the conveyor belt 12, or the horizontal direction); the second electric telescopic rod 31 is connected to the linear moving mechanism 2 in a manner that slides along the extension direction of the linear moving mechanism 2, and the second electric telescopic rod 31 includes a second telescopic rod that telescopes between the linear moving mechanism 2 and the conveyor belt 12 (the telescopic direction is shown in FIG. Figure 1 (as indicated by the double-headed arrow in the figure); the second suction head 32 is fixed to the end of the second telescopic rod near the conveyor belt 12; the controller 4 is connected to the second electric telescopic rod 31 and the linear motion mechanism 2. The controller 4 is configured to: when a board is stuck, control the second electric telescopic rod 31 to drive the second suction head 32 to move toward the conveyor belt 12 to absorb the items conveyed by the conveyor belt 12, and control the linear motion mechanism 2 to drive the second electric telescopic rod 31 to slide along the movement direction of the linear motion mechanism 2. (It should be noted that the horizontal direction described in this embodiment can be strictly horizontal or at a certain angle, as long as it can ensure the normal conveyance of the PCB board.)

[0029] In the above manner, the controller 4 controls the start-up of the linear moving mechanism 2 and the second electric telescopic rod 31 to adjust the telescopic length of the second electric telescopic rod 31 and the position of the second electric telescopic rod 31 in the extension direction of the conveyor belt 12, so that the second adsorption head 32 connected to the second electric telescopic rod 31 can adsorb the objects on the conveyor belt 12 and drive the objects to move along the extension direction of the conveyor belt 12 to a position where no jamming occurs, thereby reducing the occurrence of jamming and improving the conveying efficiency.

[0030] In a preferred embodiment of the present invention, the conveying mechanism 1 further includes a conveying bracket 13 and a conveyor belt drive mechanism. The conveyor belt 12 is mounted on the conveying bracket 13 and extends in the horizontal direction. Specifically, the conveyor bracket 13 is a roughly rectangular frame with a simple structure and is easy to build. The conveyor belt drive mechanism includes a motor 141, a driving wheel 142, and a driven wheel 143. The conveyor belt 12 is annularly wound around the outside of the driving wheel 142 and the driven wheel 143. The motor 141 drives the driving wheel 142 to rotate the conveyor belt 12, driving the driven wheel 143 to rotate synchronously. In some embodiments, the conveyor belt drive 14 further includes a reduction gearbox, a coupling, etc. The drive mechanism of the conveyor belt 12 is a common application form in this field. Its structure can refer to the existing technology and will not be described here.

[0031] The SMT patch conveying device further includes: a base 51, a running wheel 52, a plurality of first electric push rods 53, and a plurality of support legs 54. The base 51 is fixed to the side of the conveying support 13 that is away from the conveying surface of the conveyor belt 12. In this embodiment, the base 51 is located below the conveying support 13. The interior of the base 51 is hollow, and a plurality of perforations are formed on the side of the base 51 that is away from the conveyor belt 12. The running wheel 52 is mounted on the side of the base 51 that is away from the conveyor belt 12. The first electric push rod 53 is fixed in the base 51, and the movable end 531 of the first electric push rod extends through the perforation. The telescopic stroke of the movable end 531 of the first electric push rod is greater than the vertical distance between the movable end 531 of the first electric push rod and the running wheel 52. The plurality of support legs 54 are respectively fixed to the movable end 531 of the first electric push rod that extends through the perforation.

[0032] Through the above method, the setting of the walking wheel 52 improves the flexibility of the movement of the SMT patch conveying device, and the setting of the first electric push rod 53 can adjust the height of the SMT patch conveying device, so that the SMT patch conveying device matches the height of the patch machines (not shown) at both ends of the conveying direction, thereby improving the continuity of conveying and reducing the occurrence of conveying jams.

[0033] In a preferred embodiment of the present invention, the base 51 is generally rectangular. To improve the stability of the base 51, the number of running wheels 52 is no less than four, and they are distributed at the four corners of the base 51. The number of first electric push rods 53 is preferably four. When the height of the conveyor belt 12 is lower than the height of the placement machines on both sides, the movable ends 531 of the first electric push rods extend and serve as legs to lift the conveyor bracket 13, and the running wheels 52 are off the ground. When the height of the conveyor belt 12 is higher than the height of the placement machines on both sides, the movable ends 531 of the first electric push rods shorten, and the running wheels 52 serve as legs to support the base 51 and the conveyor bracket 13 on the base 51.

[0034] In a preferred embodiment of the present invention, it also includes a plurality of connecting mechanisms installed on the conveying bracket 13, and the connecting mechanisms include: a second electric push rod 61, a magnetic plate and a first adsorption head 62, which are installed on the conveying bracket 13, and the rod end of the second electric push rod 61 is retracted along the extension direction of the conveyor belt 12, and the rod end can be extended to extend out of the conveying bracket 13; the magnetic plate is fixed to the rod end of the second electric push rod 61; the first adsorption head 62 is fixed to the magnetic plate.

[0035] In the above manner, SMT patch conveying device is usually provided with patch machines on both sides of the conveying direction, and the second electric push rod 61 is started. The rod end of the second electric push rod 61 extends along the extension direction of the conveyor belt 12 until it extends out of the conveying bracket 13. The magnetic plate at the rod end can be fixed to the patch machine by magnetic attraction or can be fixed to the patch machine by vacuum attraction through the first adsorption head 62, so as to realize the connection and fixation between the SMT patch conveying device and the patch machines on both sides, thereby ensuring the continuity of the conveying.

[0036] In this embodiment, the magnetic attraction plate can be an electromagnet, which is connected to the power supply of the electromagnet by the controller 4 to achieve adsorption and desorption of the electromagnet, thereby improving the convenience of connecting and separating the SMT patch conveying device and the patch machine and improving work efficiency.

[0037] In this embodiment, the number of connecting structures can be 4, which are respectively arranged at the positions corresponding to the conveying bracket 13 and the front-end placement machine and the rear-end placement machine, so as to realize the connection between the SMT patch conveying device and the front-end placement machine and the rear-end placement machine, and ensure the continuity of the conveying.

[0038] In the preferred embodiment of the present invention, continue to refer to Figure 1 The SMT patch conveying mechanism also includes a correction seat 7, which is connected and fixed to the top of the conveying bracket 13 through a column 71. The interior of the correction seat 7 is hollow, and an opening structure is provided on the side of the correction seat 7 facing the conveying mechanism 1. The linear moving mechanism 2 is partially arranged in the correction seat 7 and extends from the opening structure.

[0039] Specifically, combined Figure 2 As shown ( Figure 2 (The limit assembly 11 and the first electric push rod 53 are not shown in the figure). The linear moving mechanism 2 includes a first linear motion assembly 21 and a second linear motion assembly 22. The motion direction of the first linear motion assembly 21 (the b direction is consistent with the conveying direction of the conveyor belt 12) is parallel to the extension direction of the conveyor belt 12. The second linear motion assembly 22 is connected to the first linear motion assembly 21 in a sliding manner relative to the first linear motion assembly 21. The motion direction of the second linear motion assembly 22 (the c direction) is perpendicular to the extension direction of the conveyor belt 12. The second electric telescopic rod 31 is connected to the second linear motion assembly 22 in a sliding manner along the extension direction of the second linear motion assembly 22.

[0040] In the above manner, the second electric telescopic rod 31 can move in the width direction of the conveyor belt 12 (a direction perpendicular to the conveying direction) along with the movement of the second linear motion component 22. The second linear motion component 22 and the second electric telescopic rod 31 connected thereto can move in the conveying direction along with the movement of the first linear motion component 21. Therefore, the second electric telescopic rod 31 and the second adsorption head 32 can be adjusted to the specified position of the conveyor belt 12 according to actual working conditions, thereby improving the flexibility of the SMT patch conveying device.

[0041] In a preferred embodiment of the present invention, the first linear motion assembly 21 is a screw-type stepper motor. The sliding end of the first linear motion assembly 21 is fixed to the second linear motion assembly 22, thereby driving the second linear motion assembly 22 to slide along the conveying direction. The second linear motion assembly 22 can be a dual-actuator linear motor. The number of second electric telescopic rods 31 can match the number of actuators or can be appropriately reduced. The actuators of the second linear motion assembly 22 are connected to the second electric telescopic rod 31, thereby driving the second electric telescopic rod 31 to slide. The number of second linear motion assemblies 22 is not limited to one; technicians can provide multiple second linear motion assemblies as needed, and this embodiment does not impose any restrictions on this. The first linear motion mechanism 21 and the second linear motion mechanism 22 are common linear motion mechanisms. Their specific structures can be referred to in the prior art and will not be described in detail here.

[0042] like Figure 3 As shown, in a preferred embodiment of the present invention, the limiting assembly 11 includes a limiting plate 111, a pin shaft 112 and a guide wheel 113: the limiting plate 111 is movably arranged on the conveying bracket 13, and a plurality of mounting grooves are formed on the surface of the limiting plate 111 facing the conveyor belt 12, and a pin shaft 112 is provided in the mounting groove, and the axial direction of the pin shaft 112 is perpendicular to the conveying direction, and the guide wheel 113 is rotatably arranged in the mounting groove with the pin shaft 112 as the rotation axis.

[0043] In this way, the setting of the limiting plate 111 can prevent the objects on the surface of the conveyor belt 12 from falling off the conveying surface. The setting of the guide wheel 113 reduces the friction between the objects to be conveyed and reduces the occurrence of the board jam phenomenon.

[0044] In this embodiment, there are multiple limit plates 111, the length of the limit plates 111 can be adjusted according to actual working conditions, and the number of guide wheels 113 can be adaptively adjusted according to the length of the limit plates 111. This embodiment does not impose any restrictions on this.

[0045] In a preferred embodiment of the present invention, the SMT patch conveying mechanism further includes: a support plate 132 and a first electric telescopic rod 15, the support plate 132 is fixed to the conveying bracket 13 along the length direction of the conveyor belt 12, and the support plate 132 is used to support the limit plate 111; the first electric telescopic rod 15 is located on the side of the limit plate away from the conveyor belt 12 and is fixed to the side 131 of the conveying bracket 13, the first electric telescopic rod 15 includes a first telescopic rod, the movable end of the first telescopic rod is connected to the side of the limit plate 111 away from the conveyor belt 12, and the first telescopic rod is telescopic between the side 131 and the limit plate 111 along a direction oblique to the conveying direction (specifically, horizontally telescopic along a direction perpendicular to the limit plate 111, Figure 2 The double-headed arrow in the telescopic direction of the first telescopic rod); the controller 4 is further configured to: when the number of card plates at the same position exceeds a specified threshold, control the first electric telescopic rod 15 to start, and the first telescopic rod is telescopic to a specified stroke.

[0046] By activating the first electric telescopic rod 15 in the above manner, its extension drives the limit plate toward the conveyor mechanism 1, thereby reducing the distance between the limit plate 111 and the conveyor mechanism 1. The shortening of the first telescopic rod drives the limit plate 111 away from the conveyor mechanism 1, thereby increasing the distance between the limit plate 111 and the conveyor mechanism 1. The provision of the first electric telescopic rod 15 increases the flexibility of the position of the limit plate 111, allowing it to be flexibly adjusted based on the conveying conditions of the conveyor mechanism 1, reducing the risk of plate jams. The extension and retraction of the first electric telescopic rod 15 are controlled by the controller 4, thereby enhancing the flexibility of the SMT patch conveyor device.

[0047] In this embodiment, there is no limitation on the connection method between the movable end of the first electric telescopic rod 15 and the limit plate 111. Technicians can select a suitable connection structure according to actual working conditions. Preferably, the movable end of the first electric telescopic rod 15 and the limit plate 111 are movably connected and can be detachably arranged.

[0048] In a preferred embodiment of the present invention, it also includes: light curtain sensors (not shown), which are arranged in pairs on both sides of the conveyor belt 12 in the width direction. The light curtain sensors are used to detect whether a board jam occurs. The light curtain sensors are connected to the controller 4. The controller 4 is configured to: record the number of board jams and the locations where the board jams occur. When the number of board jams at the same location exceeds a specified threshold, the second electric telescopic rod 31 and the linear moving mechanism 2 are controlled to start.

[0049] Through the above method, when the light source emitted by the light curtain sensor is blocked by objects on the surface of the conveyor belt 12 for a long time, it can be determined that a jam has occurred. When jams occur frequently at the same position, the second electric telescopic rod 31 is controlled to extend and retract to adjust the distance between the limit plate 111 and the conveyor belt 12, thereby improving the conveying efficiency.

[0050] In the preferred embodiment of the present invention, Figure 4 As shown, the controller 4 is respectively connected to the conveyor belt drive mechanism, the second electric telescopic rod 31, the first electric telescopic rod 15, the linear motion mechanism 2 (including the first linear motion component 21 and the second linear motion component 22), the light curtain sensor and the second electric push rod 61. Drivers or relays can also be set between the controller 4 and the above components as needed to ensure the smooth startup and operation of the above components.

[0051] In this embodiment, the controller 4 can be an integrated circuit chip with signal processing capabilities. The controller 4 can be a general-purpose processor, including a central processing unit (CPU), a single-chip microcomputer, a microcontroller unit (MCU), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), an embedded ARM, etc. The controller 4 can implement or execute the various control logics disclosed in this embodiment.

[0052] It should be noted that this embodiment does not limit the specific structure of the first electric telescopic rod 15, the second electric telescopic rod 31, the first electric push rod 53, and the second electric push rod 61. Any structure in the prior art that can achieve electric telescopic extension of the rod end can be applied to the present invention. All of the above electric structures can be connected to the controller 4 to adjust the telescopic length of the rod.

[0053] The present invention further provides an SMT placement system comprising the aforementioned SMT placement conveyor device and placement machines, wherein the placement machines are disposed at both ends of the SMT placement conveyor device in the conveying direction. By employing the aforementioned SMT placement conveyor device, PCBs placed by the placement machines can be smoothly received and transported to the next placement machine, thereby reducing the occurrence of board jams and improving transport efficiency.

[0054] [Second embodiment]

[0055] like Figure 5 、 Figure 6 As shown, the second embodiment of the present invention provides an SMT patch conveying device, which is different from the first embodiment in that the SMT patch conveying device in the second embodiment does not include the linear moving component, the second electric telescopic rod 31, and the second adsorption head 32 in the first embodiment.

[0056] Specifically, in this embodiment, the SMT patch conveying device includes a conveying mechanism 1, a first electric telescopic rod 15 and a controller 4. The conveying mechanism 1 includes: a conveying bracket 13, a conveyor belt 12 and a limiting assembly 11 arranged in pairs on both sides of the width direction of the conveyor belt. The conveyor belt 12 is installed on the conveying bracket 13 and extends in the horizontal direction; the limiting assembly 11 includes: a support plate 110, a limiting plate 111, a pin 112 and a guide wheel 113. The support plate 110 is fixed to the conveying bracket 13 along the length direction of the conveyor belt 12; the limiting plate 111 is provided on the support plate 110, and a plurality of mounting grooves are formed on the surface of the limiting plate 111 facing the conveyor belt 12. The mounting groove is provided with a pin 112, and the axial direction of the pin 112 is perpendicular to the conveying direction; the guide wheel 113 is rotatably provided in the mounting groove with the pin 112 as the rotation axis;

[0057] The first electric telescopic rod 15 is located on the side of the limit plate 111 away from the conveyor belt 12 and is fixed to the conveying bracket 13. The first electric telescopic rod 15 includes a first telescopic rod, the movable end of the first telescopic rod is connected to the side of the limit plate 111 away from the conveyor belt 12, and the first telescopic rod is extended and retracted in a direction oblique to the conveying direction; the controller 4 is connected to the conveying mechanism 11 and the first electric telescopic rod 15, and the controller 4 is also configured to: control the start-up of the conveying mechanism 1 and, when a jam occurs, control the extension and retraction of the first electric telescopic rod 15 to adjust the distance between the limit plate 111 and the conveyor belt 12.

[0058] Preferably, each limiting assembly 11 is provided with one or more first electric telescopic rods 15. Furthermore, this embodiment further includes a light curtain sensor, a base 51, travel wheels 52, a second electric telescopic rod 31, a second adsorption head 32, support legs 54, a connection structure, a conveyor belt drive mechanism, etc., all of which are the same as those in the first embodiment and are not described in detail here.

[0059] This embodiment further provides an SMT patch system, including a patch machine and the SMT patch conveying device provided in the second embodiment.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An SMT patch conveying device, characterized in that: include: The conveying mechanism comprises: a conveying bracket; a conveyor belt mounted on the conveying bracket and extending in the horizontal direction; a limiting assembly arranged in pairs on both sides of the width direction of the conveyor belt, the limiting assembly comprising: a support plate extending along the length direction of the conveyor belt and fixed to the conveying bracket; a limiting plate arranged on the support plate, a surface of the limiting plate facing the conveyor belt being formed with a plurality of mounting grooves, a pin being arranged in the mounting groove, the axial direction of the pin being perpendicular to the conveying direction of the conveyor belt; a guide wheel being rotatably arranged in the mounting groove with the pin as a rotating axis; a first electric telescopic rod, located on a side of the limit plate facing away from the conveyor belt and fixed to the conveying bracket, the first electric telescopic rod comprising a first telescopic rod, a movable end of the first telescopic rod being connected to a side of the limit plate facing away from the conveyor belt, the first telescopic rod being extendable and retractable in a direction oblique to the conveying direction; A controller is connected to the conveying mechanism and the first electric telescopic rod. The controller is also configured to: control the start-up of the conveying mechanism and, when a plate is stuck, control the extension and retraction of the first electric telescopic rod to adjust the distance between the limit plate and the conveyor belt.

2. The SMT patch conveying device according to claim 1, characterized in that: Each of the limiting components is correspondingly provided with one or more of the first electric telescopic rods.

3. The SMT patch conveying device according to claim 2, characterized in that: Also includes: Light curtain sensors are arranged in pairs on both sides of the conveyor belt in the width direction. The light curtain sensors are used to detect whether a board jam occurs. The light curtain sensors are connected to the controller. The controller is configured to: record the number of board jams and the locations where the board jams occur. When the number of board jams at the same location exceeds a specified threshold, control the first electric telescopic rod to extend or retract a specified stroke.

4. The SMT patch conveying device according to claim 3, characterized in that: The SMT patch conveying device also includes: a base fixed to a side of the conveying support away from the conveying surface of the conveyor belt, wherein the interior of the base is hollow and a plurality of perforations are formed on the side of the base away from the conveyor belt; A traveling wheel is mounted on a side of the base facing away from the conveyor belt; a plurality of first electric push rods fixed in the base, wherein the movable ends of the first electric push rods extend through the through holes, and the telescopic stroke of the movable ends of the first electric push rods is greater than the vertical distance between the movable ends of the first electric push rods and the travel wheels; A plurality of supporting legs are respectively fixed to the movable ends of the first electric push rods passing through the through holes.

5. The SMT patch conveying device according to claim 1, characterized in that: Also included are a plurality of connection mechanisms mounted on the delivery bracket, the connection mechanisms comprising: a second electric push rod, mounted on the conveying bracket, wherein the rod end of the second electric push rod is retractable along the extending direction of the conveyor belt, and the rod end can be extended to extend out of the conveying bracket; A magnetic plate fixed to the rod end; The first adsorption head is fixed to the magnetic plate.

6. The SMT patch conveying device according to any one of claims 1 to 5, characterized in that: Also includes: a linear moving mechanism, arranged on a side opposite to the conveying surface of the conveyor belt in a manner movable along the extending direction of the conveyor belt; a second electric telescopic rod connected to the linear moving mechanism in a sliding manner along an extension direction of the linear moving mechanism, the second electric telescopic rod comprising a second telescopic rod, the second telescopic rod being telescopic between the linear moving mechanism and the conveyor belt; A second adsorption head is fixed to an end of the second telescopic rod close to the conveyor belt; A controller is connected to the second electric telescopic rod and the linear motion mechanism. The controller is configured to: when a card is stuck, control the second electric telescopic rod to drive the second adsorption head to move toward the conveyor belt to adsorb the items conveyed by the conveyor belt, and control the linear motion mechanism to drive the second electric telescopic rod to slide.

7. The SMT patch conveying device according to claim 6, characterized in that: The linear motion mechanism comprises: a first linear motion assembly, wherein a motion direction of the first linear motion assembly is parallel to an extension direction of the conveyor belt; The second linear motion assembly is connected to the first linear motion assembly in a sliding manner relative to the first linear motion assembly, and the movement direction of the second linear motion assembly is perpendicular to the extension direction of the conveyor belt; the second electric telescopic rod is connected to the second linear motion assembly in a sliding manner along the extension direction of the second linear motion assembly.

8. An SMT patch system, characterized in that: The invention comprises a chip mounter and the SMT chip conveying device according to any one of claims 1 to 7.

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