A patch conveying mechanism for a chip mounter

Abstract

The utility model belongs to the technical field of paster machine, and disclose a kind of paster conveying mechanism for paster machine, including conveying frame, the inside of conveying frame is provided with conveying belt, the top of conveying belt is placed with circuit board, the inside of conveying frame is provided with two front and rear pressure overlaying bands located above conveying belt, two the similar end of the bottom of pressure overlaying band is pressed on the top of circuit board front and rear sides, the above of conveying belt is provided with left and right two adjusting components, the both ends of adjusting component are connected in the same end of two front and rear pressure overlaying bands, resistance component is provided in pressure overlaying band, and two resistance components are connected with expansion pipe between them. The utility model is due to the setting of pressure overlaying band, under the cooperation of conveying belt, the front and rear sides of circuit board can be pressed, so that conveying belt can clamp circuit board under the cooperation of two pressure overlaying bands, and continuous transmission is carried out, to reach the effect of stable transportation circuit board to the below of paster head.

Description

Technical Field

[0001] This utility model belongs to the field of chip mounter technology, specifically a chip mounter transport mechanism for chip mounters. Background Technology

[0002] A pick-and-place machine, also known as a "placement machine," is a device installed after a dispensing machine or screen printer in a production line. It is a machine that accurately places surface mount components onto PCB pads by moving the placement head. It is a key piece of equipment in an SMT production line and comes in both manual and fully automatic versions.

[0003] In the current use of pick and place machines, a transport mechanism is usually set on one side of the machine body to transport the PCB circuit boards to be placed. However, the existing conveyor belt transport mechanism lacks a good positioning mechanism when transporting PCB circuit boards, which causes the circuit boards to shift during transportation. To address this, some equipment has added a limiting mechanism, but this increases the wear and tear on the PCB circuit boards.

[0004] Therefore, it is necessary to develop a chip delivery mechanism for chip mounters to address the shortcomings of existing technologies. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a placement and transport mechanism for a chip mounter, which has the advantage of facilitating stable transport.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chip placement and transport mechanism for a chip mounter, comprising a conveyor frame, a conveyor belt disposed inside the conveyor frame, a circuit board placed on top of the conveyor belt, two front and rear pressing belts disposed inside the conveyor frame above the conveyor belt, the near ends of the bottom of the two pressing belts pressing against the front and rear sides of the top of the circuit board, two left and right adjusting components disposed above the conveyor belt, the two ends of the adjusting components being drivenly sleeved into the same end of the front and rear pressing belts, a retaining component disposed inside the pressing belt, a telescopic tube connecting the two retaining components, the adjusting components and the retaining components tensioning the pressing belts, a communicating component connecting the middle of the adjusting components and the retaining components, two front and rear tensioning components disposed on the top of the conveyor frame, the two tensioning components corresponding one-to-one with the pressing belts, the front end of the tensioning component rolling against the outer surface of the pressing belt.

[0007] Furthermore, the pressing belt includes a pressing belt body disposed above the conveyor belt, a positioning belt integrally formed in the middle of the inner wall of the pressing belt body, and a clamping ring integrally formed on the outer surface of the pressing belt body.

[0008] Furthermore, the adjusting component includes a connecting ring disposed between two pressing strips, with an adjusting ring connected to both the front and rear ends of the connecting ring, and a connecting pipe connected between the top of the connecting ring and the connecting component; A piston is sealed inside the adjusting ring. The side of the piston away from the connecting ring is connected to a connecting pipe via a bearing. The other end of the connecting pipe passes through the adjusting ring and is fixedly connected to a transmission roller that is sleeved inside the connecting ring and the adjusting ring.

[0009] Furthermore, a transmission rod is inserted inside the connecting pipe and the transmission roller. The inner wall of the connecting pipe and the transmission roller and the outer surface of the transmission rod are all polygonal. The inner diameter of the connecting pipe and the transmission roller is adapted to the outer diameter of the transmission rod. One end of the transmission rod passes through the connecting pipe and the transmission roller and is fixedly connected to a positioning shaft that is rotatably sleeved in the conveyor frame. The other end of the positioning shaft extends to the outside of the conveyor frame and is connected to a transmission gear set. A drive motor is installed on the back of the conveyor frame. The conveyor belt has two positioning rollers on the left and right sides inside the transmission sleeve. The two ends of the positioning rollers are rotatably sleeved on the conveyor frame through bearings. The two ends of one positioning roller extend to the front and rear sides of the conveyor frame and are connected to the front and rear transmission gear sets. The rear end of the other positioning roller is fixedly connected to the front end of the output shaft of the drive motor.

[0010] Furthermore, the tensioning assembly includes a tensioning frame fixedly installed on the top of the conveyor frame. A positioning groove is provided in the center of the tensioning frame. A positioning block is slidably engaged inside the positioning groove. A positioning spring is provided inside the positioning groove to support and connect to the top and bottom of the positioning block.

[0011] Furthermore, both the tensioning frame and the positioning block are movably fitted with limiting slide rods. Two of the limiting slide rods are movably fitted inside the tensioning frame and are symmetrically arranged on the left and right sides of the positioning groove. The other limiting slide rod is movably fitted in the middle of the positioning block. The front ends of the two limiting slide rods located inside the tensioning frame are driven to the outer surfaces of the pressing belt body and the clamping ring. The front end of the limiting slide rod movably fitted inside the positioning block is driven to the inner wall of the pressing belt body and the positioning belt.

[0012] Furthermore, the connecting component includes a first guide pipe fixedly connected to the upper end of the connecting pipe, and a second guide pipe fixedly connected to the middle of the telescopic pipe. The other ends of the first and second guide pipes are connected to a three-way pipe via a three-way valve, and the other end of the three-way pipe is connected to a pump.

[0013] Furthermore, the abutment assembly includes a linkage frame disposed near the middle of the two pressing belt bodies. The linkage frame is movably disposed away from the middle of the conveyor frame with a plurality of evenly distributed abutment rollers. The bottom of the abutment rollers rolls against the top of the pressing belt body and the lower layer of the positioning belt. The rear end of the abutment roller is fixedly connected to a rotating shaft rotatably sleeved on the conveyor frame. The front end of the abutment roller is rotatably connected to the linkage frame through a shaft seal ring. The linkage frame is connected to both ends of the telescopic tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Due to the inclusion of a pressing belt, this invention, in conjunction with the conveyor belt, can press the front and rear sides of the circuit board, allowing the conveyor belt to clamp the circuit board with the cooperation of the two pressing belts and continuously transport it, thereby achieving the effect of stably transporting the circuit board to the bottom of the mounting head.

[0015] Due to the setting of the adjustment component, this utility model can make the two pressing belts move smoothly and continuously with the conveyor frame in cooperation with the transmission gear set, and can also adjust the distance between the two pressing belts in cooperation with the connecting component, so that they can be clamped on the front and back sides of circuit boards of different specifications.

[0016] Due to the telescopic tube, this utility model, similar to the adjustment component, allows the distance between the two pressing belts to be changed by the adjustment component. With the cooperation of the telescopic tube, the second guide tube can always be connected to the two linkage frames through the telescopic tube. Thus, after adjusting the distance between the two pressing belts, the expansion degree of several supporting rollers can be adjusted through the connecting component, telescopic tube, and linkage frames, thereby changing the distance between the bottom of the pressing belt at the bottom of several supporting rollers and the top of the conveyor belt, which is suitable for clamping circuit boards of partial thickness.

[0017] Due to the tensioning component, this invention, with the cooperation of several abutment rollers, allows the bottom of the abutment rollers to abut against the bottom of the pressing belt at different heights when the expansion degree of the abutment rollers changes, thus ensuring the tension of the pressing belt. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the back of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model; Figure 5 This is a sectional view of the side of the adjustment component of this utility model; Figure 6 This is a schematic diagram of the structure of the pressing tape of this utility model.

[0019] In the diagram: 1. Conveyor frame; 2. Conveyor belt; 3. Pressing belt; 31. Pressing belt body; 32. Positioning belt; 33. Clamping ring; 4. Adjusting assembly; 41. Connecting ring; 42. Adjusting ring; 43. Connecting pipe; 44. Piston; 45. Connecting pipe; 46. Drive roller; 47. Drive rod; 48. Positioning shaft; 5. Telescopic pipe; 6. Tensioning assembly; 61. Tensioning frame; 62. Positioning groove; 63. Positioning block; 64. Positioning spring; 65. Limiting slide bar; 7. Supporting assembly; 71. Linkage frame; 72. Supporting roller; 73. Rotating shaft; 8. Connecting assembly; 81. T-shaped pipe; 82. First guide pipe; 83. Second guide pipe; 9. Drive motor; 10. Transmission gear set; 11. Positioning roller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 6 As shown, this utility model provides a chip placement and conveying mechanism for a chip mounter, including a conveyor frame 1. A conveyor belt 2 is arranged inside the conveyor frame 1. A circuit board is placed on the top of the conveyor belt 2. Two pressing belts 3 are arranged inside the conveyor frame 1 above the conveyor belt 2. The near ends of the bottom of the two pressing belts 3 are pressed against the front and rear sides of the top of the circuit board. Two left and right adjustment components 4 are arranged above the conveyor belt 2. The two ends of the adjustment components 4 are driven and sleeved in the same end of the two pressing belts 3. A holding component 7 is arranged inside the pressing belt 3. A telescopic tube 5 is connected between the two holding components 7. The adjustment components 4 and the holding components 7 tension the pressing belts 3. A connecting component 8 is connected between the middle of the adjustment components 4 and the holding components 7. Two front and rear tensioning components 6 are arranged on the top of the conveyor frame 1. The two tensioning components 6 correspond one-to-one with the pressing belts 3. The front end of the tensioning component 6 rolls and adheres to the outer surface of the pressing belt 3. Due to the setting of the pressing belt 3, in cooperation with the conveyor belt 2, the front and rear sides of the circuit board can be pressed tightly, so that the conveyor belt 2 can clamp the circuit board with the cooperation of the two pressing belts 3 and carry out continuous transmission, thereby achieving the effect of stably transporting the circuit board to the bottom of the mounting head.

[0022] The pressing belt 3 includes a pressing belt body 31 disposed above the conveyor belt 2, a positioning belt 32 integrally formed in the middle of the inner wall of the pressing belt body 31, and a clamping ring 33 integrally formed on the outer surface of the pressing belt body 31.

[0023] The adjusting component 4 includes a connecting ring 41 disposed between two pressing belts 3. An adjusting ring 42 is connected to both the front and rear ends of the connecting ring 41. A connecting pipe 43 is connected between the top of the connecting ring 41 and the connecting component 8. A piston 44 is sealed inside the adjusting ring 42. The side of the piston 44 away from the connecting ring 41 is connected to a connecting pipe 45 via a bearing. The other end of the connecting pipe 45 passes through the adjusting ring 42 and is fixedly connected to a transmission roller 46 that is sleeved inside the connecting ring 41 and the adjusting ring 42.

[0024] A transmission rod 47 is inserted inside the connecting pipe 45 and the transmission roller 46. The inner wall of the connecting pipe 45 and the transmission roller 46 and the outer surface of the transmission rod 47 are all polygonal. The inner diameter of the connecting pipe 45 and the transmission roller 46 is matched with the outer diameter of the transmission rod 47. One end of the transmission rod 47 passes through the connecting pipe 45 and the transmission roller 46 and is fixedly connected to a positioning shaft 48 that is rotatably sleeved in the conveyor frame 1. The other end of the positioning shaft 48 extends to the outside of the conveyor frame 1 and is connected to a transmission gear set 10. A drive motor 9 is installed on the back of the conveyor frame 1. The conveyor belt 2 has two positioning rollers 11 inside the transmission sleeve. The two ends of the positioning rollers 11 are rotated and sleeved on the conveyor frame 1 through bearings. The two ends of one of the positioning rollers 11 extend to the front and rear sides of the conveyor frame 1 and are connected to the front and rear transmission gear sets 10. The rear end of the other positioning roller 11 is fixedly connected to the front end of the output shaft of the drive motor 9. Due to the setting of the adjustment component 4, the two pressing belts 3 can move smoothly and continuously with the conveyor frame 1 in cooperation with the transmission gear set 10, and the distance between the two pressing belts 3 can be adjusted by the adjustment component 4 in cooperation with the connecting component 8, so that they can be clamped on the front and back sides of circuit boards of different specifications.

[0025] The tensioning assembly 6 includes a tensioning frame 61 fixedly installed on the top of the conveyor frame 1. A positioning groove 62 is provided in the middle of the tensioning frame 61. A positioning block 63 is slidably engaged inside the positioning groove 62. A positioning spring 64 is provided inside the positioning groove 62 to support and connect the top and bottom of the positioning block 63.

[0026] Both the tensioning frame 61 and the positioning block 63 are movably fitted with limiting slide rods 65. Two of the limiting slide rods 65 are movably fitted inside the tensioning frame 61 and are symmetrically arranged on the left and right sides of the positioning groove 62. The other limiting slide rod 65 is movably fitted in the middle of the positioning block 63. The front ends of the two limiting slide rods 65 located inside the tensioning frame 61 are driven to fit on the outer surface of the pressing belt body 31 and the clamping ring 33. The front end of the limiting slide rod 65 movably fitted inside the positioning block 63 is driven to fit on the inner wall of the pressing belt body 31 and the positioning belt 32. Due to the tensioning component 6, with the cooperation of several abutment rollers 72, when the expansion degree of the abutment rollers 72 changes, causing the height of their bottoms to change, the bottoms of the changed abutment rollers 72 can abut against the bottom of the pressing belt 3 at different heights with the cooperation of the tensioning component 6, thus ensuring the tension of the pressing belt 3.

[0027] The connecting component 8 includes a first guide pipe 82 fixedly connected to the upper end of the connecting pipe 43, and a second guide pipe 83 fixedly connected to the middle of the telescopic pipe 5. The other ends of the first guide pipe 82 and the second guide pipe 83 are connected to a three-way pipe 81 through a three-way valve, and the other end of the three-way pipe 81 is connected to a pump. Due to the telescopic tube 5, similarly to the adjustment component 4, when the distance between the two pressing belts 3 is changed by the adjustment component 4, the second guide tube 83 can always be connected to the two linkage frames 71 through the telescopic tube 5. Thus, after adjusting the distance between the two pressing belts 3, the expansion degree of several abutment rollers 72 can be adjusted by the connecting component 8, telescopic tube 5 and linkage frame 71, thereby changing the distance between the bottom of the pressing belt 3 at the bottom of several abutment rollers 72 and the top of the conveyor belt 2, so as to be suitable for clamping circuit boards of partial thickness.

[0028] The abutment component 7 includes a linkage frame 71 located near the middle of the two pressing belt bodies 31. The linkage frame 71 is movably arranged away from the middle of the conveyor frame 1 with a number of evenly distributed abutment rollers 72. The bottom of the abutment rollers 72 rolls against the top of the pressing belt body 31 and the lower layer of the positioning belt 32. The rear end of the abutment rollers 72 is fixedly connected to a rotating shaft 73 that is rotatably sleeved on the conveyor frame 1. The front end of the abutment rollers 72 is rotatably connected to the linkage frame 71 through a shaft seal ring. The linkage frame 71 is connected to both ends of the telescopic tube 5.

[0029] Working principle and usage process of this utility model: Next, adjust the distance between the two pressing belts 3 according to the specifications of the surface mount circuit board until the distance between the two clamping rings 33 facing each other is adapted to the width of the front and rear ends of the circuit board. This ensures that the two pressing belts 3 clamp the circuit board with the cooperation of the conveyor belt 2 and are transported. Specifically, open the two solenoid valves at both ends of the adjusting component 4, and inject hydraulic oil into the two adjusting rings 42 through the three-way pipe 81 and the first guide pipe 82 via the connecting pipe 43 and the connecting ring 41. This pushes the two pistons 44 to move closer or further away from each other synchronously. Then, under the drive of the connecting pipe 45, the two transmission rollers 46 move closer and further away from each other, thereby making the two pressing belts 3 move closer or further away from each other, so that the distance between the two pressing belts 3 is adapted to the width of the circuit board. The distance between the bottom of the pressing belt 3 and the top of the conveyor belt 2 is adjusted according to the thickness of the circuit board. Specifically, after opening the solenoid valve in the linkage frame 71, hydraulic oil or air is injected into the two linkage frames 71 through the three-way pipe 81 and the second guide pipe 83 via the telescopic pipe 5, and simultaneously enters several abutment rollers 72, thereby changing the degree of expansion of the abutment rollers 72. Under the restriction of the tensioning component 6, it can be ensured that the tension of the pressing belt 3 can still be guaranteed after the abutment rollers 72 change, thereby ensuring that the two pressing belts 3 can clamp the circuit board with the cooperation of the conveyor belt 2 and carry out stable transmission. Then start the drive motor 9 and place the PLC circuit board on the conveyor belt 2. Under the transmission of the transmission gear set 10, the two pressing belts 3 move continuously with the conveyor belt 2 with the cooperation of the adjustment component 4. When the front and rear sides of the circuit board move to the bottom of the pressing belt 3 with the conveyor belt 2, the circuit board can be pressed by the front and rear pressing belts 3 under the support of the conveyor belt 2, thereby ensuring that the circuit board is transported smoothly under the action of the conveyor belt 2.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A placement transport mechanism for a pick-and-place machine, comprising a transport frame (1), characterized in that: The conveyor frame (1) is equipped with a conveyor belt (2) inside. A circuit board is placed on top of the conveyor belt (2). The conveyor frame (1) is equipped with two pressing belts (3) located above the conveyor belt (2) inside. The near ends of the bottom of the two pressing belts (3) are pressed against the front and rear sides of the top of the circuit board. Two left and right adjustment components (4) are provided above the conveyor belt (2). The two ends of the adjustment components (4) are driven and sleeved in the same end of the two pressing belts (3). 3) An abutment component (7) is provided inside, and a telescopic tube (5) is connected between the two abutment components (7). The adjustment component (4) and the abutment component (7) tension the pressing belt (3). A connecting component (8) is connected between the middle of the adjustment component (4) and the abutment component (7). Two tensioning components (6) are provided at the top of the conveyor frame (1). The two tensioning components (6) and the pressing belt (3) correspond one-to-one. The front end of the tensioning component (6) rolls and adheres to the outer surface of the pressing belt (3).

2. The placement transport mechanism for a chip mounter according to claim 1, characterized in that: The pressing belt (3) includes a pressing belt body (31) disposed above the conveyor belt (2), a positioning belt (32) is integrally formed in the middle of the inner wall of the pressing belt body (31), and a clamping ring (33) is integrally formed on the outer surface of the pressing belt body (31).

3. A placement transport mechanism for a chip mounter according to claim 1, characterized in that: The adjustment component (4) includes a connecting ring (41) disposed between two pressing strips (3), and an adjustment ring (42) is connected to both the front and rear ends of the connecting ring (41). A connecting pipe (43) is connected between the top of the connecting ring (41) and the connecting component (8). The adjusting ring (42) is sealed with a piston (44). The side of the piston (44) away from the connecting ring (41) is connected to a connecting pipe (45) via a bearing. The other end of the connecting pipe (45) passes through the adjusting ring (42) and is fixedly connected to a transmission roller (46) that is sleeved inside the connecting ring (41) and the adjusting ring (42).

4. A placement transport mechanism for a pick-and-place machine according to claim 3, characterized in that: A transmission rod (47) is inserted inside the connecting pipe (45) and the transmission roller (46). The inner wall of the connecting pipe (45) and the transmission roller (46) and the outer surface of the transmission rod (47) are all polygonal. The inner diameter of the connecting pipe (45) and the transmission roller (46) is matched with the outer diameter of the transmission rod (47). One end of the transmission rod (47) passes through the connecting pipe (45) and the transmission roller (46) and is fixedly connected to a positioning shaft (48) that is rotatably sleeved in the conveyor frame (1). The other end of the positioning shaft (48) extends to the outside of the conveyor frame (1) and is connected to a transmission gear set (10). The back of the conveyor frame (1) is equipped with a drive motor (9). The conveyor belt (2) is internally connected with two positioning rollers (11). The two ends of the positioning rollers (11) are rotated and sleeved on the conveyor frame (1) through bearings. The two ends of one of the positioning rollers (11) extend to the front and rear sides of the conveyor frame (1) and are connected to the front and rear transmission gear sets (10). The rear end of the other positioning roller (11) is fixedly connected to the front end of the output shaft of the drive motor (9).

5. A placement transport mechanism for a chip mounter according to claim 1, characterized in that: The tensioning assembly (6) includes a tensioning frame (61) fixedly installed on the top of the conveyor frame (1). A positioning groove (62) is provided in the middle of the interior of the tensioning frame (61). A positioning block (63) is slidably engaged inside the positioning groove (62). A positioning spring (64) is provided inside the positioning groove (62) to abut against the top and bottom of the positioning block (63).

6. A placement transport mechanism for a pick-and-place machine according to claim 5, characterized in that: Both the tensioning frame (61) and the positioning block (63) are movably fitted with limiting slide rods (65). Two of the limiting slide rods (65) are movably fitted inside the tensioning frame (61) and are symmetrically arranged on the left and right sides of the positioning groove (62). The other limiting slide rod (65) is movably fitted in the middle of the positioning block (63). The front ends of the two limiting slide rods (65) located inside the tensioning frame (61) are driven to fit on the outer surface of the pressing belt body (31) and the clamping ring (33). The front end of the limiting slide rod (65) movably fitted inside the positioning block (63) is driven to fit on the inner wall of the pressing belt body (31) and the positioning belt (32).

7. A placement transport mechanism for a pick-and-place machine according to claim 3, characterized in that: The connecting component (8) includes a first guide pipe (82) fixedly connected to the upper end of the connecting pipe (43) and a second guide pipe (83) fixedly connected to the middle part of the telescopic pipe (5). The other ends of the first guide pipe (82) and the second guide pipe (83) are connected to a three-way pipe (81) through a three-way valve. The other end of the three-way pipe (81) is connected to a pump.

8. A placement transport mechanism for a pick-and-place machine according to claim 2, characterized in that: The abutment assembly (7) includes a linkage frame (71) located near the middle of the conveyor frame (1) on the two pressing belt bodies (31). The linkage frame (71) is movably provided with a plurality of evenly distributed abutment rollers (72) away from the middle of the conveyor frame (1). The bottom of the abutment rollers (72) rolls against the top of the pressing belt body (31) and the lower layer of the positioning belt (32). The rear end of the abutment rollers (72) is fixedly connected to a rotating shaft (73) that is rotatably sleeved on the conveyor frame (1). The front end of the abutment rollers (72) is rotatably connected to the linkage frame (71) through a shaft seal ring. The linkage frame (71) is connected to both ends of the telescopic tube (5).

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