Feeding device of circuit board chip mounter

Abstract

The utility model discloses a feeding device of a circuit board chip mounter, which comprises a chip mounter main body, a plurality of dismounting structures are arranged on the outer wall of the chip mounter main body, and a feeding structure is arranged at the top of each dismounting structure. According to the feeding device, efficient and stable feeding of materials can be achieved, the materials can be discharged out of a rectangular barrel in order, observation and disassembly can be conducted, the problem that the materials are blocked or disordered in a traditional feeding mode is solved, meanwhile, a user is allowed to adjust the position of an L-shaped material clamping plate according to actual needs, and the feeding efficiency is improved. According to the feeding structure of the circuit board chip mounter, materials of different sizes can be stably clamped, the feeding flexibility is improved, the dismounting structure is arranged, so that the feeding structure can be conveniently and rapidly dismounted and mounted, the maintenance and replacement process is greatly simplified, and the adaptability and flexibility of the whole circuit board chip mounter are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board processing equipment technical field, concretely relates to a kind of feeding device of circuit board chip mounter. BACKGROUND

[0002] In the circuit board processing process, chip mounter is one of indispensable equipment, chip mounter is also called mounter, and it is mostly that tape roll is placed in placement groove, then the component on the carrier tape surface is mounted on the surface of circuit board by the tape gun driving carrier tape in tape roll moves.

[0003] According to patent document CN119403108A, a kind of feeding device of circuit board of chip mounter is disclosed, including suspension plate, transmission structure being set at the top of suspension plate, a plurality of transfer structures being set at the back of suspension plate, a plurality of feeding assemblies being set at the front bottom of suspension plate, the feeding assembly includes hydraulic cylinder one, the output end of hydraulic cylinder one is connected with tray, the top of tray is equidistantly provided with a plurality of struts, the top of a plurality of struts is commonly connected with seat plate, the top of seat plate is connected with direction adjusting guide column, motor one is located at the bottom of seat plate, the output end of motor one is connected with direction adjusting guide column, a plurality of sliding grooves are formed on the side wall of direction adjusting guide column, and feeding structure is embedded in sliding groove.The present application can efficiently and quickly feed, be convenient for flexible adjustment position, high accuracy, strong practicality.

[0004] Traditional feeding device has the problem of insufficient accuracy in the feeding process, which causes the material to easily deviate from the predetermined path, thereby affecting the feeding efficiency and causing the phenomenon of jamming, in addition, the traditional feeding device lacks flexibility and cannot effectively adjust the feeding structure according to different circuit board requirements, which reduces the stability and production efficiency of the device. UTILITY MODEL CONTENT

[0005] The utility model aims at the deficiencies of prior art, and provides a kind of feeding device of circuit board chip mounter, to reach the accuracy and stability of feeding.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of feeding device of circuit board chip mounter, including chip mounter main body, the outer wall of chip mounter main body is provided with a plurality of dismounting structures, the top of dismounting structure is provided with feeding structure;

[0007] The feeding structure includes discharge assembly, the inside of discharge assembly is provided with adjusting assembly, the outer wall of discharge assembly is movably connected with dismounting assembly;

[0008] The dismounting structure comprises a fixed block two, the left and right sides of the top of the fixed block two are fixedly connected with connecting blocks three, the front side of the fixed block two is fixedly connected with a mounting frame, a circular movable hole penetrating to the inside is arranged in the bottom of the mounting frame, a rotating shaft is movably connected to the inner wall of the circular movable hole, and the bottom of the rotating shaft is fixedly connected with a plum-blossom knob two.

[0009] Preferably, the discharging assembly comprises a rectangular cylinder, the upper and lower sides of the two inclined surfaces at the back of the outer wall of the rectangular cylinder are fixedly connected with fixed plates one, a rectangular through hole penetrating to the inside of the rectangular cylinder is arranged on the rear side of the fixed plate one, a fixed block one is fixedly connected to the middle position of the corner at the back of the outer wall of the rectangular cylinder, and an internal threaded hole penetrating to the inside of the rectangular cylinder is arranged on the rear side of the fixed block one.

[0010] Preferably, the sides of the two inclined surfaces at the front of the outer wall of the rectangular cylinder away from each other are fixedly connected with insertion frames, an L-shaped through hole is arranged on the front side of the top of the rectangular cylinder, an L-shaped insertion slot is arranged on the inner wall bottom of the L-shaped through hole, the left and right sides of the bottom of the rectangular cylinder are fixedly connected with supporting blocks, and the bottoms of the two supporting blocks are fixedly connected with a bottom plate.

[0011] Preferably, the sides of the two supporting blocks close to each other are movably connected with a pushing plate, the top of the pushing plate is movably connected with the bottom of the rectangular cylinder, the bottom of the pushing plate is movably connected with the top of the bottom plate, the front side of the bottom plate is fixedly connected with a temporary storage protective plate, the bottom of the temporary storage protective plate and the bottom plate is fixedly connected with a mounting groove, the inner wall of the mounting groove is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a connecting block one, and the front side of the connecting block one is fixedly connected with the rear side of the pushing plate.

[0012] Preferably, the adjusting assembly comprises an L-shaped clamping plate, the outer wall of the L-shaped clamping plate is movably connected with the inner wall of the rectangular cylinder, the upper and lower sides of the two inclined surfaces of the outer wall of the L-shaped clamping plate are fixedly connected with guide plates, the outer wall of the guide plate is movably connected with the inner wall of the rectangular through hole, the middle position of the corner of the outer wall of the L-shaped clamping plate is fixedly connected with a connecting block two, the front side of the connecting block two is rotatably connected with a lead screw, the outer wall of the lead screw is threadedly connected with the inner wall of the internal threaded hole, and the front end of the lead screw is fixedly connected with a plum-blossom knob one.

[0013] Preferably, the dismounting assembly comprises an L-shaped protective plate, the outer wall of the L-shaped protective plate is movably connected with the inner wall of the L-shaped through hole, two inclined surfaces of the outer wall of the L-shaped protective plate are provided with rectangular fixed holes penetrating into the interior, the inner wall of the rectangular fixed hole is fixedly connected with an observation window, the upper and lower sides of the front side of the observation window are fixedly connected with support sleeves, the inner wall of the support sleeve is movably connected with a slide rod, one end of the slide rod close to the corner of the L-shaped protective plate is fixedly connected with a pull plate, the outer wall of the slide rod away from the corner of the L-shaped protective plate is sleeved with a spring, one end of the slide rod away from the corner of the L-shaped protective plate is fixedly connected with a limiting insert plate, the outer wall of the limiting insert plate away from the corner of the L-shaped protective plate is movably connected with the inner wall of the insert frame, the bottom of the L-shaped protective plate is fixedly connected with an L-shaped insert plate, and the outer wall of the L-shaped insert plate is movably connected with the inner wall of the L-shaped insert groove.

[0014] Preferably, the two connecting blocks are fixedly connected with the outer wall of the mounting groove on the side close to each other, the top of the rotating shaft is fixedly connected with a bidirectional threaded rod, the top of the bidirectional threaded rod is rotatably connected with the inner wall of the mounting frame, the outer wall of the bidirectional threaded rod is movably connected with a fixing sleeve at the middle position, the outer wall of the fixing sleeve is fixedly connected with the inner wall of the mounting frame, the outer wall of the bidirectional threaded rod is threadedly connected with two symmetrical slide blocks, the left and right sides of the slide block are fixedly connected with a connecting plate one, the side away from the slide block of the connecting plate one is fixedly connected with a connecting plate two, the rear side of the connecting plate two is fixedly connected with a connecting plate three, the top of the connecting plate three is fixedly connected with a clamping plate, and the side close to each other of the upper and lower clamping plates is movably connected with the outer wall of the chip mounter main body.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1、Through be provided with the feeding structure, make the circuit board chip mounter's feeding device in use process, can realize efficient, stable feeding of material, make material can orderly discharge from the rectangular cylinder, and can observe and dismount, avoided the problem that material blocked or confusion in traditional feeding mode, simultaneously, allow user to adjust the position of L shape clamping plate according to actual need, thereby realize the stable clamping of different size material, improved the flexibility of feeding.

[0017] 2、Through be provided with the dismounting structure, make feeding structure can be disassembled and installed conveniently and quickly, greatly simplified the maintenance and replacement process, when user needs to clean or maintain feeding structure, need not use complicated tool or spend a lot of time, just simple operation dismounting structure can easily dismount feeding structure, in addition, still convenient for user to change different specifications or types of feeding structure according to production demand, thereby improved the adaptability and flexibility of entire circuit board chip mounter. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the utility model dismounting structure;

[0020] Figure 3 It is a structure section view schematic view of the utility model discharging assembly;

[0021] Figure 4 It is a structure schematic view of the utility model adjusting assembly;

[0022] Figure 5 It is a structure schematic view of the utility model dismounting assembly;

[0023] Figure 6 It is a structure schematic view of the utility model dismounting structure.

[0024] In the drawing: 1, the patch machine main body;4, dismounting structure;3, the feeding structure;31, discharging assembly;32, adjusting assembly;33, dismounting assembly;311, rectangular cylinder;312, fixed plate one;313, rectangular through hole;314, fixed block one;315, internal thread hole;316, insert frame;317, L-shaped through hole;318, L-shaped insertion slot;319, support block;310, bottom plate;3101, push plate;3102, temporary storage protection material plate;3103, installation groove;3104, electric push rod;3105, connecting block one;321, L-shaped clamping plate;322, guide plate;323, connecting block two;324, screw;325, plum blossom knob one;331, L-shaped protection plate;332, observation window;333, support sleeve;334, slide rod;335, pull plate;336, spring;337, limit insertion plate;338, L-shaped insertion plate;41, fixed block two;42, connecting block three;43, mounting frame;44, rotating shaft;45, plum blossom knob two;46, bidirectional threaded rod;47, fixed sleeve;48, sliding block;49, connecting plate one;40, connecting plate two;401, connecting plate three;402, clamping plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figure 1The utility model provides a kind of technical scheme: a kind of feeding device of circuit board chip mounter, including chip mounter main body 1, the outer wall of chip mounter main body 1 is provided with multiple disassembly structures 4, the top of the disassembly structure 4 is provided with feeding structure 3.

[0027] Please refer to Figures 2-5The feeding structure 3 comprises a discharging assembly 31, an adjusting assembly 32 is arranged in the discharging assembly 31, a dismounting assembly 33 is movably connected to the outer wall of the discharging assembly 31, the discharging assembly 31 comprises a rectangular cylinder 311, two fixed plates one 312 are fixedly connected to the upper and lower sides of the two inclined surfaces at the rear of the outer wall of the rectangular cylinder 311, a rectangular through hole 313 penetrating into the interior of the rectangular cylinder 311 is formed in the rear side of the fixed plate one 312, a fixed block one 314 is fixedly connected to the middle position of the corner at the rear of the outer wall of the rectangular cylinder 311, an internally threaded hole 315 penetrating into the interior of the rectangular cylinder 311 is formed in the rear side of the fixed block one 314, two inserting frames 316 are fixedly connected to the sides of the two inclined surfaces away from each other at the front of the outer wall of the rectangular cylinder 311, an L-shaped through hole 317 is formed in the front side of the top of the rectangular cylinder 311, an L-shaped insertion slot 318 is formed in the inner wall bottom of the L-shaped through hole 317, support blocks 319 are fixedly connected to the left and right sides of the bottom of the rectangular cylinder 311, a bottom plate 310 is fixedly connected to the bottom of the two support blocks 319, a pushing plate 3101 is movably connected to the side of the two support blocks 319 close to each other, the top of the pushing plate 3101 is movably connected with the bottom of the rectangular cylinder 311, the bottom of the pushing plate 3101 is movably connected with the top of the bottom plate 310, a temporary storage protective material plate 3102 is fixedly connected to the front side of the bottom plate 310, an installation groove 3103 is fixedly connected to the bottom of the temporary storage protective material plate 3102 and the bottom plate 310, an electric push rod 3104 is fixedly connected to the inner wall of the installation groove 3103, a connecting block one 3105 is fixedly connected to the output end of the electric push rod 3104, the front side of the connecting block one 3105 is fixedly connected with the rear side of the pushing plate 3101, the adjusting assembly 32 comprises an L-shaped clamping plate 321, the outer wall of the L-shaped clamping plate 321 is movably connected with the inner wall of the rectangular cylinder 311, guide plates 322 are fixedly connected to the upper and lower sides of the two inclined surfaces of the outer wall of the L-shaped clamping plate 321, the outer wall of the guide plate 322 is movably connected with the inner wall of the rectangular through hole 313, a connecting block two 323 is fixedly connected to the middle position of the corner of the outer wall of the L-shaped clamping plate 321, a lead screw 324 is rotatably connected to the front side of the connecting block two 323, the outer wall of the lead screw 324 is threadedly connected with the inner wall of the internally threaded hole 315, a key knob one 325 is fixedly connected to the front end of the lead screw 324, the dismounting assembly 33 comprises an L-shaped protective plate 331, the outer wall of the L-shaped protective plate 331 is movably connected with the inner wall of the L-shaped through hole 317, rectangular fixed holes penetrating into the interior are formed in the two inclined surfaces of the outer wall of the L-shaped protective plate 331, observation windows 332 are fixedly connected to the inner wall of the rectangular fixed holes, support sleeves 333 are fixedly connected to the upper and lower sides of the front side of the observation windows 332, slide rods 334 are movably connected to the inner wall of the support sleeves 333, pull plates 335 are fixedly connected to the ends of the two slide rods 334 close to the corners of the L-shaped protective plate 331, springs 336 are sleeved on the outer walls of the two slide rods 334 away from the corners of the L-shaped protective plate 331, limit insertion plates 337 are fixedly connected to the ends of the two slide rods 334 away from the corners of the L-shaped protective plate 331,The outer wall of the limiting insert plate 337, away from the corner of the L-shaped protective plate 331, is movably connected to the inner wall of the insert frame 316. The bottom of the L-shaped protective plate 331 is fixedly connected to the L-shaped insert plate 338, and the outer wall of the L-shaped insert plate 338 is movably connected to the inner wall of the L-shaped slot 318. First, turn the plum blossom knob 325 according to actual needs, so that the plum blossom knob 325 drives the lead screw 324 to rotate in the inner wall of the internal thread hole 315, thereby causing the lead screw 324 to drive the connecting block 323 and the L-shaped clamping plate 321 to move. The stability of the L-shaped clamping plate 321 during movement is improved by the sliding of the guide plate 322 in the inner wall of the rectangular through hole 313. Then, the circuit board component is inserted from the inner wall of the rectangular cylinder 311 and the L-shaped clamping plate 321. When it is observed through the observation window 332 that the circuit board component is inserted into the rectangular cylinder 311 at the wrong angle, the pull plate 335 is pulled. The pull plate 335 drives the slide rod 334 to slide on the inner wall of the support sleeve 333, while compressing the spring 336. At this time, the limiting insert plate 337 moves out from the inside of the insert frame 316, releasing the limitation on the L-shaped protective plate 331. Then, the L-shaped protective plate 331 is moved upward, so that the L-shaped insert plate 338 moves out from the inside of the L-shaped slot 318, thus facilitating the disassembly of the L-shaped protective plate 331. At this time, the circuit board components can be correctly placed. Then, by turning the plum blossom knob 325, the L-shaped clamping plate 321 clamps and fixes the circuit board components. Then, by activating the electric push rod 3104, the connecting block 3105 and the pusher plate 3101 are moved. During the movement, the pusher plate 3101 can push the circuit board components to the top of the temporary storage protective plate 3102, waiting for the pick-and-place machine body 1 to pick them up, improving the practicality of the device.

[0028] Please see Figure 6The dismounting structure 4 comprises a fixed block two 41, left and right sides of the top of the fixed block two 41 are fixedly connected with connecting blocks three 42, the front side of the fixed block two 41 is fixedly connected with a mounting frame 43, the bottom of the mounting frame 43 is provided with a circular movable hole penetrating into the inside, the inner wall of the circular movable hole is movably connected with a rotating shaft 44, the bottom of the rotating shaft 44 is fixedly connected with a plum blossom knob two 45, the side, where the two connecting blocks three 42 are close to each other, is fixedly connected with the outer wall of the mounting groove 3103, the top of the rotating shaft 44 is fixedly connected with a bidirectional screw rod 46, the top of the bidirectional screw rod 46 is rotatably connected with the inner wall of the mounting frame 43, the outer wall of the bidirectional screw rod 46 is movably connected with a fixed sleeve 47, the outer wall of the fixed sleeve 47 is fixedly connected with the inner wall of the mounting frame 43, the outer wall of the bidirectional screw rod 46 is threadedly connected with two symmetrically arranged sliding blocks 48, left and right sides of the sliding blocks 48 are fixedly connected with connecting plates one 49, one side, away from the sliding blocks 48, of the connecting plates one 49 is fixedly connected with connecting plates two 40, the rear side of the connecting plates two 40 is fixedly connected with connecting plates three 401, the top of the connecting plates three 401 is fixedly connected with clamping plates 402, one side, where the upper and lower clamping plates 402 are close to each other, is movably connected with the outer wall of the chip mounter main body 1, when it is necessary to dismount the feeding structure 3 from the chip mounter main body 1 to maintain the feeding structure 3, the plum blossom knob two 45 is twisted to drive the rotating shaft 44 and the bidirectional screw rod 46 to rotate in the inside of the mounting frame 43, the bidirectional screw rod 46 is rotated to drive the two sliding blocks 48, the connecting plates one 49, the connecting plates two 40, the connecting plates three 401 and the clamping plates 402 to move in opposite directions, so that the clamping and fixing of the chip mounter main body 1 are released, then the feeding structure 3 is dismounted from the outer wall of the chip mounter main body 1, so that the feeding structure 3 is conveniently maintained, the maintenance convenience of the device is improved, meanwhile, the feeding structure 3 is conveniently dismounted and installed, and the dismounting convenience of the device is improved.

[0029] Working principle:

[0030] First according to actual need twist plum blossom knob one 325, make plum blossom knob one 325 drive screw rod 324 in the inner wall of the internal thread hole 315 rotation, in turn make screw rod 324 drive connecting block two 323 and L-shaped clamping plate 321 move, through the guide plate 322 in the rectangular through hole 313 inner wall sliding improve the stability of L-shaped clamping plate 321 when moving, then the circuit board element is put into from the inner wall of the rectangular cylinder 311 and L-shaped clamping plate 321, when observing the window 332 observes that the circuit board element is put into the rectangular cylinder 311 inside angle error, in turn pull the pull plate 335, the pull plate 335 drive slide rod 334 in the inner wall of the support sleeve 333 sliding, while compressing spring 336, at this time limit insert plate 337 from the inside of the insert frame 316, remove the limit of L-shaped protection plate 331, then move L-shaped protection plate 331 upwards, make L-shaped insert plate 338 from the inside of L-shaped insert slot 318, in turn facilitate the disassembly of L-shaped protection plate 331, at this time can the circuit board element is correctly placed, again through the twist plum blossom knob one 325, make L-shaped clamping plate 321 to the circuit board element clamping fixed, then through the start of electric push rod 3104, push connecting block one 3105 and push material plate 3101 move, push material plate 3101 in the moving process, can push the circuit board element to the top of the temporary storage protection material plate 3102, wait for pick and place machine main body 1 to pick up, improve the practicability of the device;

[0031] When the feeding structure 3 and the pick and place machine main body 1 need to be disassembled to maintain the feeding structure 3, twist plum blossom knob two 45, make plum blossom knob two 45 drive the rotating shaft 44 and the bidirectional threaded rod 46 in the inside of the mounting frame 43 rotation, through the bidirectional threaded rod 46 rotation make two sliding blocks 48 drive connecting plate one 49, connecting plate two 40, connecting plate three 401 and clamping plate 402 move in opposite directions, in turn release the clamping and fixing of the pick and place machine main body 1, then disassemble the feeding structure 3 from the outer wall of the pick and place machine main body 1, in turn facilitate the maintenance of the feeding structure 3, improve the maintenance convenience of the device, at the same time, facilitate the disassembly and installation of the feeding structure 3, improve the disassembly convenience of the device.

[0032] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a circuit board pick and place machine, characterized in that: The machine includes a pick and place machine body (1), the outer wall of which is provided with multiple disassembly structures (4), and the top of the disassembly structure (4) is provided with a feeding structure (3); The feeding structure (3) includes a discharge component (31), an adjustment component (32) is provided inside the discharge component (31), and a disassembly component (33) is movably connected to the outer wall of the discharge component (31). The disassembly structure (4) includes a fixing block two (41), and connecting blocks three (42) are fixedly connected to the top left and right sides of the fixing block two (41). A mounting frame (43) is fixedly connected to the front side of the fixing block two (41). A circular movable hole is opened at the bottom of the mounting frame (43) and extends into the interior. A rotating shaft (44) is movably connected to the inner wall of the circular movable hole. A plum blossom knob two (45) is fixedly connected to the bottom of the rotating shaft (44).

2. The feeding device for a circuit board placement machine according to claim 1, characterized in that: The discharge assembly (31) includes a rectangular tube (311). Fixing plates (312) are fixedly connected to the upper and lower sides of the two inclined surfaces at the rear of the outer wall of the rectangular tube (311). A rectangular through hole (313) penetrating into the interior of the rectangular tube (311) is opened on the rear side of the fixing plate (312). A fixing block (314) is fixedly connected to the middle position at the rear corner of the outer wall of the rectangular tube (311). An internal threaded hole (315) penetrating into the interior of the rectangular tube (311) is opened on the rear side of the fixing block (314).

3. The feeding device for a circuit board placement machine according to claim 2, characterized in that: The two inclined surfaces at the front of the outer wall of the rectangular tube (311) are fixedly connected to the side of the two inclined surfaces that are far apart from each other. An L-shaped through hole (317) is opened on the front side of the top of the rectangular tube (311). An L-shaped slot (318) is opened at the bottom of the inner wall of the L-shaped through hole (317). Support blocks (319) are fixedly connected to the left and right sides of the bottom of the rectangular tube (311). A base plate (310) is fixedly connected to the bottom of the two support blocks (319).

4. The feeding device for a circuit board placement machine according to claim 3, characterized in that: A pusher plate (3101) is movably connected to one side of the two support blocks (319) that are close to each other. The top of the pusher plate (3101) is movably connected to the bottom of the rectangular tube (311). The bottom of the pusher plate (3101) is movably connected to the top of the base plate (310). A temporary storage protective plate (3102) is fixedly connected to the front side of the base plate (310). An installation groove (3103) is fixedly connected to the bottom of the temporary storage protective plate (3102) and the base plate (310). An electric push rod (3104) is fixedly connected to the inner wall of the installation groove (3103). A connecting block (3105) is fixedly connected to the output end of the electric push rod (3104). The front side of the connecting block (3105) is fixedly connected to the rear side of the pusher plate (3101).

5. The feeding device for a circuit board placement machine according to claim 1, characterized in that: The adjustment assembly (32) includes an L-shaped clamping plate (321). The outer wall of the L-shaped clamping plate (321) is movably connected to the inner wall of the rectangular tube (311). Guide plates (322) are fixedly connected to the upper and lower sides of the two inclined surfaces of the outer wall of the L-shaped clamping plate (321). The outer wall of the guide plate (322) is movably connected to the inner wall of the rectangular through hole (313). A connecting block two (323) is fixedly connected to the middle position of the corner of the outer wall of the L-shaped clamping plate (321). A lead screw (324) is rotatably connected to the front side of the connecting block two (323). The outer wall of the lead screw (324) is threadedly connected to the inner wall of the internal threaded hole (315). A plum blossom knob one (325) is fixedly connected to the front end of the lead screw (324).

6. The feeding device for a circuit board placement machine according to claim 1, characterized in that: The disassembly assembly (33) includes an L-shaped protective plate (331). The outer wall of the L-shaped protective plate (331) is movably connected to the inner wall of the L-shaped through hole (317). Two inclined surfaces of the outer wall of the L-shaped protective plate (331) are provided with rectangular fixing holes that penetrate to the interior. An observation window (332) is fixedly connected to the inner wall of the rectangular fixing hole. Support sleeves (333) are fixedly connected to the upper and lower sides of the front side of the observation window (332). A sliding rod (334) is movably connected to the inner wall of the support sleeve (333). The upper and lower sliding rods (334) are fixed at one end near the corner of the L-shaped protective plate (331). A pull plate (335) is connected, and springs (336) are fitted on the outer walls of the upper and lower slide rods (334) away from the corner of the L-shaped protective plate (331). A limiting plate (337) is fixedly connected to one end of the upper and lower slide rods (334) away from the corner of the L-shaped protective plate (331). The outer wall of the limiting plate (337) away from the corner of the L-shaped protective plate (331) is movably connected to the inner wall of the insert frame (316). An L-shaped insert plate (338) is fixedly connected to the bottom of the L-shaped protective plate (331). The outer wall of the L-shaped insert plate (338) is movably connected to the inner wall of the L-shaped slot (318).

7. The feeding device for a circuit board placement machine according to claim 1, characterized in that: The two connecting blocks (42) are fixedly connected to the outer wall of the mounting groove (3103) on their adjacent sides. A bidirectional threaded rod (46) is fixedly connected to the top of the rotating shaft (44). The top of the bidirectional threaded rod (46) is rotatably connected to the inner wall of the mounting frame (43). A fixing sleeve (47) is movably connected to the middle position of the outer wall of the bidirectional threaded rod (46). The outer wall of the fixing sleeve (47) is fixedly connected to the inner wall of the mounting frame (43). The outer wall of the bidirectional threaded rod (46) is threaded. There are two symmetrical sliders (48). A connecting plate (49) is fixedly connected to both the left and right sides of the slider (48). A connecting plate (40) is fixedly connected to the side of the connecting plate (49) away from the slider (48). A connecting plate (401) is fixedly connected to the rear side of the connecting plate (40). A clamping plate (402) is fixedly connected to the top of the connecting plate (401). The side of the upper and lower clamping plates (402) that are close to each other is movably connected to the outer wall of the pick and place machine body (1).

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