A simple solder paste first-in-first-out fool-proof device and method

Abstract

The present invention discloses a simple solder paste first-in-first-out fool-proof device and method thereof, which belongs to the technical field of solder paste storage fixtures, including a top box, a bottom box and several intermediate boxes; the tracks connected in the intermediate box, the top box and the bottom box form an S-shaped channel for the canned solder paste to slide down naturally; the adjacent intermediate boxes are detachably connected by a quick disassembly mechanism, and the top and bottom of the intermediate box are detachably connected to the top box and the bottom box respectively by a quick disassembly mechanism; a blocking mechanism is provided at the material taking window of the bottom box, and a counting mechanism is provided at the top of the top box. Through the above method, in the present invention, the user can freely select the number of intermediate boxes according to their own needs, and sequentially splice the bottom box, several intermediate boxes and the top box from bottom to top through the quick disassembly mechanism; when it is necessary to take the solder paste can, the user can accurately control the material taking amount through the blocking mechanism to prevent the solder paste can in the device from rolling out of the material taking window after the solder paste can is taken out, affecting the normal taking and placing work.

Description

Technical Field

[0001] The present invention relates to the technical field of solder paste storage jigs, and in particular to a simple solder paste first-in-first-out fool-proofing device and method thereof. Background Art

[0002] Solder paste is a welding material, which is a paste-like mixture formed by mixing solder powder, flux and other surfactants, thixotropic agents, etc. It is mainly used for welding electronic components.

[0003] When solder paste is used, if it is left for a long time, more than six hours, it will harden and need to be refrigerated. When stored in a conventional freezer, the solder paste tubes are generally placed randomly without order, and solder pastes with different storage dates cannot be distinguished. During use, some of the solder paste stored in advance may expire and deteriorate due to random placement, resulting in waste.

[0004] Chinese patent CN218080859U discloses a first-in-first-out fixture for solder paste, which includes a square box body with a hollow structure. Several groups of first channel bodies and second channel bodies are arranged in the box body. The first channel bodies and the second channel bodies are arranged vertically in an adjacent manner. The first channel body includes two first clamping plates that are parallel to each other and inclined upward. An S-shaped channel for the natural sliding of solder paste is formed between the first channel body and the second channel body in the vertical direction. However, under different working conditions, the operator's demand for solder paste is different. The device is difficult to cope with different usage scenarios; the amount of solder paste in the fixture needs to be manually observed, and it is difficult to grasp the specific amount of solder paste in the fixture in real time.

[0005] Based on this, the present invention designs a simple solder paste first-in-first-out fool-proof device and method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a simple solder paste first-in-first-out fool-proof device and method.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A simple solder paste first-in-first-out fool-proofing device includes a top box, a bottom box and several intermediate boxes;

[0009] Tracks are fixedly installed in the intermediate box, top box and bottom box. The track of the top box is connected to the track of the top intermediate box, and the track of the bottom box is connected to the track of the bottom intermediate box. The connected tracks form an S-shaped channel for the canned solder paste to slide naturally. A feeding window for feeding is provided at the upper end of the intermediate box, and a material removal window for discharging useful materials is provided on the front side of the bottom box. Adjacent intermediate boxes are detachably connected by a quick disassembly mechanism, and the top and bottom of the intermediate box are detachably connected to the top box and the bottom box respectively by quick disassembly mechanisms. A blocking mechanism is provided at the material removal window of the bottom box, and a counting mechanism is provided at the top of the top box.

[0010] The blocking mechanism includes a front blocking assembly, a rear blocking assembly and a linkage assembly. The front blocking assembly and the rear blocking assembly are both arranged on the track of the bottom box, the front blocking assembly is close to the material picking window and the rear blocking assembly is far away from the material picking window; the linkage assembly is installed on the side wall of the bottom box, and the two ends of the linkage assembly are respectively connected to the front blocking assembly and the rear blocking assembly.

[0011] Furthermore, the front blocking assembly includes a block, a first limit block, a through slot and a return spring. The first limit block is fixedly connected to the inner wall of the bottom box, the side wall of the block is slidingly connected to the inner wall of the first limit block, and a through slot for the block to pass through is opened on the track; a return spring is fixedly installed in the first limit block and abuts against the block.

[0012] Furthermore, the front blocking assembly and the rear blocking assembly have the same structure. In a natural state, the block of the front blocking assembly passes through the through slot and extends into the track to block the solder paste can, and the block of the rear blocking assembly is located outside the track.

[0013] Furthermore, the linkage assembly includes a clearance groove and a connecting plate. The side wall of the bottom box is provided with a clearance groove, and the two ends of the connecting plate pass through the clearance groove and are fixedly connected to the block of the front blocking assembly and the block of the rear blocking assembly respectively.

[0014] Furthermore, the counting mechanism includes a counting box, an outlet trigger assembly and an inlet trigger assembly. The inlet trigger assembly is fixedly installed on the top of the top box. The outlet trigger assembly and the inlet trigger assembly are both installed on the track, and the inlet trigger assembly is located on the lower side of the feed window of the top box. The outlet trigger assembly is located at the material removal window, and the outlet trigger assembly and the inlet trigger assembly have the same structure.

[0015] The outlet trigger component is located on the lower side of the feed window of the top box and at the material taking window. The outlet trigger component and structure are the same.

[0016] Furthermore, the outlet trigger assembly includes a fixed guide plate and an elastic guide plate, both of which are fixedly connected to the track, and there is a gap between the fixed guide plate and the elastic guide plate in a natural state.

[0017] Furthermore, the quick disassembly and assembly mechanism includes an insert block, a socket and a spring locking assembly. The bottom ends of the middle box and the top box are fixedly installed with insert blocks, and the top ends of the middle box and the bottom box are provided with sockets for connecting with the insert blocks; the tops of the middle box and the bottom box are provided with spring locking assemblies.

[0018] Furthermore, the spring locking assembly includes a slide groove, a slider, a fixed block and a locking spring. The top of the middle box and the bottom box are both provided with a slide groove, the slider is connected to the slide groove in a limited sliding manner; the fixed block is fixedly connected to the slider, and a locking spring is fixedly installed between the fixed block and the inner wall of the middle box or the inner wall of the bottom box;

[0019] The lower side of the socket and the upper end of the slider are provided with inclined surfaces for sliding cooperation, and the insert block is also provided with a slot for engaging with the slider;

[0020] The tops of the middle box and the bottom box are provided with movable grooves, and the movable grooves are located at the lower side of the sliding grooves, and the bottoms of the sliding blocks are provided with inner buckle grooves.

[0021] Furthermore, a second limiting block is fixedly installed at the feed window of the intermediate box.

[0022] In order to better achieve the purpose of the present invention, the present invention also provides a simple solder paste first-in-first-out fool-proofing device method, comprising the following steps:

[0023] Step 1: The solder paste cans are placed through the feed window of the top box and slide freely down the connected S-shaped track under the action of their own weight, and are finally stopped by the block of the front blocking assembly; the solder paste cans on the track are arranged in the order they were placed;

[0024] Step 2: When the user needs to take out the solder paste can, he pulls the connecting plate downward, which simultaneously drives the stoppers of the front blocking assembly and the rear blocking assembly to move vertically downward. The stopper of the rear blocking assembly is inserted between the outermost and second inner solder paste cans, and the stopper of the front blocking assembly is retracted into the limit block, allowing the solder paste can to roll freely and move out of the material removal window; then the user releases the connecting plate, and the reset spring drives the two stoppers to reset, blocking the solder paste can again;

[0025] In addition, when the solder paste can is put into the feeding window, the solder paste can presses the elastic guide plate on the fixed guide plate to conduct it. At this time, the display screen of the counting box shows the number of solder paste cans plus one. When the solder paste can rolls out of the feeding window, the same method is triggered. At this time, the number of solder paste cans on the display screen of the counting box is reduced by one, realizing automatic counting of the solder paste cans in the device.

[0026] The present invention has the following technical effects:

[0027] In the present invention, users can freely choose the number of intermediate boxes according to their own needs, and sequentially assemble the bottom box, several intermediate boxes and the top box from bottom to top through the quick disassembly and assembly mechanism, so that the device is applicable to various working conditions, greatly increasing the flexibility of the application of the device and facilitating storage in the freezer.

[0028] Solder paste cans are placed through the feed window of the top box and slide freely down the connected S-shaped track under the action of their own weight, and are finally stopped by the front blocking component at the material removal window. This allows the solder paste cans on the track to be arranged in the order in which they were placed. When used, the solder paste removed from the other side is the one that was stored earlier, achieving the purpose of first-in-first-out, avoiding the waste of some solder paste due to long-term unuse. At the same time, the counting mechanism automatically calculates the total amount of solder paste in the device, which is convenient for users to replenish in time.

[0029] When it is necessary to take out the solder paste can, the user controls the activities of the front blocking component and the rear blocking component through the linkage component, so that the front blocking component releases the outermost solder paste can while the rear blocking component blocks the second outermost solder paste can, thereby accurately controlling the material removal amount and preventing the solder paste can in the device from rolling out of the material removal window after the solder paste can is taken out, affecting normal picking and placing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0031] Figure 1 A three-dimensional diagram of a simple solder paste first-in-first-out fool-proofing device of the present invention;

[0032] Figure 2 This is a three-dimensional diagram of the present invention after the side walls are hidden;

[0033] Figure 3 for Figure 2 Left view of;

[0034] Figure 4 A structural perspective view of the intermediate box of the present invention;

[0035] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0036] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 7 for Figure 3 Enlarged view of point B in the middle;

[0038] Figure 8 for Figure 1 Enlarged view of point D in the middle.

[0039] The numbers in the figure represent:

[0040] 100, middle box; 101, feeding window; 102, taking window; 103, observation window; 104, second limit block; 110, top box; 120, bottom box; 200, track; 300, blocking mechanism; 310, front blocking assembly; 320, rear blocking assembly; 311, block; 312, first limit block; 313, through slot; 314, return spring; 330, linkage assembly; 331, clearance slot; 3 32. Connecting plate; 400. Counting mechanism; 401. Counting box; 402. Fixed guide; 403. Elastic guide; 410. Inlet trigger assembly; 420. Outlet trigger assembly; 500. Quick disassembly mechanism; 510. Insert block; 520. Socket; 530. Spring locking assembly; 531. Slide; 532. Slider; 533. Fixed block; 534. Locking spring; 535. Inner buckle groove; 536. Movable groove. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments 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 any creative efforts shall fall within the scope of protection of the present invention.

[0042] The present invention will be further described below with reference to the embodiments.

[0043] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view. Example 1

[0044] Please refer to the instruction manual Figure 1-8 A simple solder paste first-in-first-out fool-proofing device includes a top box 110, a bottom box 120 and several middle boxes 100;

[0045] Tracks 200 are fixedly installed in the middle box 100, the top box 110 and the bottom box 120. The track 200 of the top box 110 is connected to the track 200 of the top middle box 100, and the track 200 of the bottom box 120 is connected to the track 200 of the bottom middle box 100. The connected tracks 200 form an S-shaped channel for the canned solder paste to slide naturally. A feeding window 101 for feeding is provided at the upper end of the middle box 100, and a material removal window 102 for discharging useful materials is provided on the front side of the bottom box 120. Adjacent middle boxes 100 are detachably connected by a quick disassembly mechanism 500. The top and bottom of the middle box 100 are detachably connected to the top box 110 and the bottom box 120 respectively by the quick disassembly mechanism 500. A blocking mechanism 300 is provided at the material removal window 102 of the bottom box 120, and a counting mechanism 400 is provided at the top of the top box 110.

[0046] The blocking mechanism 300 includes a front blocking assembly 310, a rear blocking assembly 320 and a linkage assembly 330. The front blocking assembly 310 and the rear blocking assembly 320 are both arranged on the track 200 of the bottom box 120, the front blocking assembly 310 is close to the material picking window 102 and the rear blocking assembly 320 is far away from the material picking window 102; the linkage assembly 330 is installed on the side wall of the bottom box 120, and the two ends of the linkage assembly 330 are respectively connected to the front blocking assembly 310 and the rear blocking assembly 320.

[0047] In the present invention, the user can freely select the number of intermediate boxes 100 according to their own needs, and sequentially assemble the bottom box 120, several intermediate boxes 100, and the top box 110 from bottom to top through the quick disassembly and assembly mechanism 500, so that the device is applicable to various working conditions, greatly increasing the flexibility of the device and facilitating storage in the freezer.

[0048] The solder paste cans are placed through the feed window 101 of the top box 110 and slide freely down the connected S-shaped track under the action of their own weight, and are finally stopped by the front blocking assembly 310 at the material removal window 102. As a result, the solder paste cans on the track 200 can be arranged in the order in which they were placed. When used, the solder paste removed from the other side is the one that was stored earlier, achieving the purpose of first-in-first-out and avoiding the waste of some solder paste due to long-term unuse. At the same time, the counting mechanism 400 automatically calculates the total amount of solder paste in the device, which is convenient for users to replenish in time.

[0049] When it is necessary to take out the solder paste can, the user controls the activities of the front blocking component 310 and the rear blocking component 320 through the linkage component 330, so that the front blocking component 310 releases the outermost solder paste can while the rear blocking component 320 blocks the second outermost solder paste can, thereby accurately controlling the amount of material taken out, and preventing the solder paste cans in the device from rolling out from the material taking window 102 after the solder paste can is taken out, affecting the normal taking and placing work. Example 2

[0050] like Figure 1-8As shown, as a preferred embodiment of the present invention, the front blocking assembly 310 includes a block 311, a first limiting block 312, a through slot 313 and a return spring 314. The first limiting block 312 is fixedly connected to the inner wall of the bottom box 120. The side wall of the block 311 is slidingly connected to the inner wall of the first limiting block 312. The track 200 is provided with a through slot 313 for the block 311 to pass through. A return spring 314 is fixedly installed in the first limiting block 312 and abuts against the block 311.

[0051] The front blocking assembly 310 and the rear blocking assembly 320 have the same structure. In the natural state, the block 311 of the front blocking assembly 310 passes through the through slot 313 and extends into the track 200 to block the solder paste can, and the block 311 of the rear blocking assembly 320 is located outside the track 200.

[0052] The linkage assembly 330 includes a clearance groove 331 and a connecting plate 332. The clearance groove 331 is opened on the side wall of the bottom box 120. The two ends of the connecting plate 332 pass through the clearance groove 331 and are fixedly connected to the stopper 311 of the front blocking assembly 310 and the stopper 311 of the rear blocking assembly 320 respectively.

[0053] In the present invention, when the user needs to take out the solder paste can, he pulls the connecting plate 332 downward, and the connecting plate 332 simultaneously drives the block 311 of the front blocking assembly 310 and the block 311 of the rear blocking assembly 320 to move vertically downward, and the block 311 of the rear blocking assembly 320 is inserted between the outermost and second inner solder paste cans, and the block 311 of the front blocking assembly 310 is retracted into the first limit block 312, so that the solder paste can can roll freely and move out of the material collection window 102; then the user releases the connecting plate 332, and the reset spring 314 drives the two blocks 311 to reset, blocking the solder paste can again, completing the work of taking and placing one solder paste can in one operation, and the operation is simple and convenient.

[0054] A second limiting block 104 is fixedly installed at the feed window 101 of the intermediate box 100, so that the feed window 101 forms an approximately T-shaped slot. Because the diameter of the cover of the solder paste can is larger than the diameter of the can body, the cover of the solder paste can can only pass through the head of the T-shaped slot, and the solder paste can can only be put in from the feed window 101 in the same direction, so that the solder paste cans in the device are arranged in one direction, which is more neat and convenient for users to operate.

[0055] The counting mechanism 400 includes a counting box 401, an inlet trigger assembly 410, and an outlet trigger assembly 420. The counting box 401 is fixedly mounted on the top of the top box 110. The inlet trigger assembly 410 and the outlet trigger assembly 420 are both mounted on the track 200. The inlet trigger assembly 410 is located at the lower side of the feed window 101, and the outlet trigger assembly 420 is located at the material removal window 102.

[0056] The inlet trigger assembly 410 and the outlet trigger assembly 420 have the same structure; the inlet trigger assembly 410 includes a fixed guide plate 402 and an elastic guide plate 403, both of which are fixedly connected to the track 200, and there is a gap between the fixed guide plate 402 and the elastic guide plate 403 in the natural state.

[0057] In the present invention, when the solder paste can is put into the feeding window 101, the solder paste can presses the elastic guide plate 403 on the fixed guide plate 402 to conduct it. At this time, the number of solder paste cans displayed on the display screen of the counting box 401 increases by one. When the solder paste can rolls out of the feeding window 102, 430 is triggered in the same way. At this time, the number of solder paste cans on the display screen of the counting box 401 decreases by one, thereby accurately realizing the counting of the solder paste cans in the device, making it convenient for users to replenish the solder paste cans in time.

[0058] The quick disassembly mechanism 500 includes an insert block 510, a socket 520, and a spring locking assembly 530. The insert block 510 is fixedly mounted on the bottom of the middle box 100 and the top box 110. The top of the middle box 100 and the bottom box 120 are each provided with a socket 520 for plugging into the insert block 510. The top of the middle box 100 and the bottom box 120 are each provided with a spring locking assembly 530.

[0059] The spring locking assembly 530 includes a slide groove 531, a slider 532, a fixed block 533, and a locking spring 534. The slide groove 531 is formed on the top of each of the intermediate box 100 and the bottom box 120. The slider 532 is in limited sliding connection with the slide groove 531. The fixed block 533 is fixedly connected to the slider 532. A locking spring 534 is fixedly installed between the fixed block 533 and the inner wall of the intermediate box 100 or the inner wall of the bottom box 120.

[0060] The lower side of the insertion hole 520 and the upper end of the slider 532 are provided with inclined surfaces for sliding cooperation, and the insertion block 510 is also provided with a slot for engaging with the slider 532 .

[0061] The top of the middle box 100 and the bottom box 120 are provided with a movable groove 536, and the movable groove 536 is located on the lower side of the slide groove 531. The bottom of the slider 532 is provided with an inner buckle groove 535.

[0062] In the present invention, the insert block 510 is aligned with the socket 520 and inserted. During the insertion process, the insert block 510 pushes the slider 532 through the inclined surface until the insert block 510 is fully inserted into the socket 520. The slider 532 is engaged with the card slot of the insert block 510 to achieve rapid fixation between adjacent intermediate boxes 100, the intermediate box 100 and the top box 110, and the intermediate box 100 and the bottom box 120; the user inserts a finger into the movable groove 536 and deducts the slider 532 through the inner buckle groove 535 to achieve rapid unlocking of the intermediate box 100, the top box 110 and the bottom box 120. The design of the inner buckle groove 535 and the movable groove 536 makes the device as a whole have no protruding parts, which is convenient for dense storage in the refrigerator.

[0063] The track 200 is made of a transparent material, and the middle box 100, the top box 110 and the bottom box 120 are all provided with observation windows 103 for assisting in observing the internal conditions of the device. Example 3

[0064] like Figure 1-8 As shown, as a preferred embodiment of the present invention, a simple solder paste first-in-first-out fool-proofing device and method thereof are also provided, comprising the following steps:

[0065] Step 1: The solder paste cans are placed through the feed window 101 of the top box 110 and slide freely down the connected S-shaped track under the action of their own weight, and are finally stopped by the stopper 311 of the front blocking assembly 310; the solder paste cans on the track 200 are arranged in the order in which they were placed;

[0066] Step 2: When the user needs to take out the solder paste can, he pulls the connecting plate 332 downward, and the connecting plate 332 simultaneously drives the stopper 311 of the front blocking assembly 310 and the stopper 311 of the rear blocking assembly 320 to move vertically downward. The stopper 311 of the rear blocking assembly 320 is inserted between the outermost and second inner solder paste cans, and the stopper 311 of the front blocking assembly 310 is retracted into the first limiting block 312, so that the solder paste can can roll freely and move out of the material taking window 102; then the user releases the connecting plate 332, and the return spring 314 drives the two stoppers 311 to return to their original position, blocking the solder paste can again;

[0067] In addition, when the solder paste can is put into the feeding window 101, the solder paste can presses the elastic guide plate 403 on the fixed guide plate 402 to conduct it. At this time, the number of solder paste cans displayed on the display screen of the counting box 401 increases by one. When the solder paste can rolls out of the feeding window 102, the same method is triggered. At this time, the number of solder paste cans on the display screen of the counting box 401 decreases by one, thereby realizing automatic counting of the solder paste cans in the device.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A simple solder paste first-in-first-out fool-proofing device, comprising a top box (110), a bottom box (120) and a plurality of intermediate boxes (100), characterized in that: The intermediate box (100), the top box (110) and the bottom box (120) are all fixedly installed with rails (200), the rails (200) of the top box (110) are connected to the rails (200) of the top intermediate box (100), and the rails (200) of the bottom box (120) are connected to the rails (200) of the bottom intermediate box (100), and the connected rails (200) form an S-shaped channel for the canned solder paste to slide naturally; a feeding window (100) for feeding is opened at the upper end of the intermediate box (100) 01), a material taking window (102) for discharging materials is provided on the front side of the bottom box (120); adjacent intermediate boxes (100) are detachably connected via a quick disassembly mechanism (500), and the top and bottom of the intermediate box (100) are detachably connected to the top box (110) and the bottom box (120) respectively via a quick disassembly mechanism (500); a blocking mechanism (300) is provided at the material taking window (102) of the bottom box (120), and a counting mechanism (400) is provided at the top of the top box (110); The blocking mechanism (300) includes a front blocking assembly (310), a rear blocking assembly (320), and a linkage assembly (330). The front blocking assembly (310) and the rear blocking assembly (320) are both arranged on the track (200) of the bottom box (120). The front blocking assembly (310) is close to the material-retrieving window (102), while the rear blocking assembly (320) is far away from the material-retrieving window (102). The linkage assembly (330) is installed on the side wall of the bottom box (120), and the two ends of the linkage assembly (330) are respectively connected to the front blocking assembly (310) and the rear blocking assembly (320). The front blocking assembly (310) includes a block (311), a first limiting block (312), a through slot (313) and a return spring (314); the first limiting block (312) is fixedly connected to the inner wall of the bottom box (120); the side wall of the block (311) is slidingly connected to the inner wall of the first limiting block (312); the track (200) is provided with a through slot (313) for the block (311) to pass through; the return spring (314) is fixedly installed in the first limiting block (312) and is in contact with the block (311); The front blocking assembly (310) and the rear blocking assembly (320) have the same structure. In a natural state, the block (311) of the front blocking assembly (310) passes through the through slot (313) and extends into the track (200) to block the solder paste can, and the block (311) of the rear blocking assembly (320) is located outside the track (200); The linkage assembly (330) includes a clearance groove (331) and a connecting plate (332). The side wall of the bottom box (120) is provided with a clearance groove (331). Both ends of the connecting plate (332) pass through the clearance groove (331) and are fixedly connected to the stopper (311) of the front blocking assembly (310) and the stopper (311) of the rear blocking assembly (320). The counting mechanism (400) comprises a counting box (401), an outlet trigger assembly (420) and an inlet trigger assembly (410), wherein the inlet trigger assembly (410) is fixedly mounted on the top of the top box (110), the outlet trigger assembly (420) and the inlet trigger assembly (410) are both mounted on the track (200), and the inlet trigger assembly (410) is located below the feeding window (101) of the top box (110), and the outlet trigger assembly (420) is located at the material removal window (102), and the outlet trigger assembly (420) and the inlet trigger assembly (410) have the same structure.

2. The simple solder paste first-in-first-out fool-proofing device according to claim 1, characterized in that: The outlet trigger assembly (420) comprises a fixed guide piece (402) and an elastic guide piece (403), wherein the fixed guide piece (402) and the elastic guide piece (403) are both fixedly connected to the track (200), and a gap exists between the fixed guide piece (402) and the elastic guide piece (403) in a natural state.

3. The simple solder paste first-in-first-out fool-proofing device according to claim 2, characterized in that: The quick disassembly and assembly mechanism (500) comprises an insert block (510), a socket (520) and a spring locking assembly (530); the bottom ends of the middle box (100) and the top box (110) are fixedly mounted with the insert block (510); the top ends of the middle box (100) and the bottom box (120) are provided with a socket (520) for plugging with the insert block (510); and the top ends of the middle box (100) and the bottom box (120) are provided with a spring locking assembly (530).

4. The simple solder paste first-in-first-out fool-proofing device according to claim 3, characterized in that: The spring locking assembly (530) includes a slide groove (531), a slider (532), a fixed block (533) and a locking spring (534). The tops of the middle box (100) and the bottom box (120) are both provided with a slide groove (531). The slider (532) is connected to the slide groove (531) in a limited sliding manner. The fixed block (533) is fixedly connected to the slider (532). A locking spring (534) is fixedly installed between the fixed block (533) and the inner wall of the middle box (100) or the inner wall of the bottom box (120). The lower side of the insertion hole (520) and the upper end of the slider (532) are provided with inclined surfaces for sliding cooperation, and the insertion block (510) is also provided with a slot for engaging with the slider (532); The tops of the middle box (100) and the bottom box (120) are provided with movable grooves (536), and the movable grooves (536) are located below the sliding grooves (531). The bottom of the sliding block (532) is provided with inner buckle grooves (535).

5. The simple solder paste first-in-first-out fool-proofing device according to claim 4, characterized in that: A second limiting block (104) is fixedly installed at the feed window (101) of the intermediate box (100).

6. A method for a simple solder paste first-in-first-out fool-proofing device as claimed in claim 5, characterized in that: The following steps are involved: Step 1: The solder paste can is placed through the feed window (101) of the top box (110), and slides freely through the connected S-shaped channel under the action of its own weight, and is finally stopped by the stopper (311) of the front blocking component (310); the solder paste cans on the track (200) are arranged in the order of placement; Step 2: When the user needs to take out the solder paste can, the connecting plate (332) is pulled downward, and the connecting plate (332) simultaneously drives the stopper (311) of the front blocking assembly (310) and the stopper (311) of the rear blocking assembly (320) to move vertically downward, and the stopper (311) of the rear blocking assembly (320) is inserted between the outermost and second inner solder paste cans, and the stopper (311) of the front blocking assembly (310) is retracted into the first limiting block (312), so that the solder paste can can roll freely and move out of the material taking window (102); then the user releases the connecting plate (332), and the reset spring (314) drives the two stoppers (311) to reset, blocking the solder paste can again; In addition, when the solder paste can is put into the feeding window (101), the solder paste can presses the elastic guide plate (403) on the fixed guide plate (402) to conduct it. At this time, the number of solder paste cans displayed on the display screen of the counting box (401) increases by one. When the solder paste can rolls out of the feeding window (102), the outlet trigger component (420) is triggered in the same way. At this time, the number of solder paste cans on the display screen of the counting box (401) decreases by one, thereby realizing automatic counting of the solder paste cans in the device.

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