CN108818353A - A kind of back-shaped needle fixation device of agricultural water sensitive paper and fixing means - Google Patents

Abstract

The invention discloses an agricultural water-sensitive paper clip fixing device and a fixing method, belonging to the technical field of agricultural plant protection machinery. The fixing device includes an upper cover, a bolt, an upper pressing plate, a lower pressing plate pair, a base plate, a lower shell, a switch panel, a base, a tenon and a ball pin; the upper pressing plate, the lower pressing plate pair and the base plate are mounted on a T The glyph lower shell is closed in the upper cover. When in use, put the fixed objects such as crop leaves and water-sensitive paper into the gap formed by the upper pressing plate and the lower pressing plate pair, touch the switch panel, and push the pin rack to automatically push the paper clip in the auxiliary channel of the lower pressing plate And stretch the inner and outer rings of the paper clip, so as to clamp the fixed object and the water-sensitive paper. The invention is convenient and quick to use, has low manufacturing and maintenance costs, and can be widely used in various application occasions such as agricultural production and scientific experiments.

Description

Fixing device and fixing method for paper clips of agricultural water-sensitive paper

technical field

The invention belongs to the technical field of agricultural plant protection machinery, in particular to a mechanical device for fixing agricultural water-sensitive paper with paper clips.

Background technique

Agricultural water-sensitive paper is often used to measure the droplet deposition distribution test under different spraying methods to detect the effect of pesticide spraying and evaluate the performance parameters of spraying equipment. It has been widely used because of its ease of use. During the test, it is necessary to determine the number of water-sensitive papers to be placed according to the specific conditions of the crop plants. For example, for tall and dense plants, it is usually necessary to arrange the water-sensitive paper in the upper, middle and lower layers along the height direction of a single crop. , but short and sparse plants will only be arranged in two layers. However, because multiple water-sensitive paper test papers need to be placed at certain distances on the crop plants, the placement of water-sensitive paper during the test operation becomes a heavy and time-consuming physical work.

It is a common practice to fix water-sensitive paper to crop leaves with paper clips. Testers generally stretch the inner and outer rings of paper clips of conventional sizes for office use, clamp water-sensitive paper and crop leaves, wait for the fixed object, release the paper clip, and use its rebound characteristics to clamp the two. Because a large amount of water-sensitive paper needs to be placed in the test, it is not only laborious and time-consuming, but also easy to cause irreversible deformation of the paper clip due to excessive expansion force, resulting in loose clamping. The water-sensitive paper is easy to fall off during the test, which seriously affects the test results. For this reason, there is an urgent need to develop a mechanical device for fixing agricultural water-sensitive paper.

Chinese patent CN104908486 announced an electromagnetic paper clip binding machine on September 16, 2015. It uses electromagnetic attraction force as the power to push paper clips, and the operation time interval is difficult to adjust. Low. Since the paper clip is only tilted by using the bump, it is difficult to precisely control the opening distance of the paper clip and the tightness of clamping the fixed object. At the same time, the point-and-line paper pressing device is easy to directly crush irregular and soft fixed objects such as crop leaves.

Contents of the invention

In view of the defects and deficiencies in the prior art, the object of the present invention is to provide a fixing device and a fixing method for paper clips of agricultural water-sensitive paper.

To achieve the above object, the present invention adopts the following technical solutions:

A paper clip fixing device for agricultural water-sensitive paper, the fixing device includes a needle-feeding mechanism, a needle-pushing mechanism, and an upper platen, a lower platen pair, a base plate, a lower case, and a base arranged sequentially from top to bottom;

The lower end of the lower case is connected to the base, and the upper end of the lower case is provided with a needle feeding through hole;

The lower platen pair includes a left platen and a right platen arranged in parallel on the substrate, and there is a gap between the left platen and the right platen to form a channel for paper clips to move with the substrate;

The substrate is provided with a needle feed hole and a bump for cooperating with the inner ring of the paper clip;

The needle sending mechanism is arranged on the base, and the lower shell is located outside the needle sending mechanism;

The needle pushing mechanism includes a reciprocating pin pushing rack for pushing the paperclip pushed into the passage by the needle sending mechanism through the needle sending through hole and the needle sending through hole along the passage to pass through the protrusion;

There is a space between the upper pressing plate and the lower pressing plate for the paper clip to protrude out of the channel after being stretched by the protrusion.

Preferably, the lower shell is T-shaped, and the upper end of the lower shell is provided with a platform that is integrally connected with the upper platen, the lower platen pair, and the base plate through bolts, and a convex needle-feeding through hole is provided on the platform; The lower end of the shell is provided with a card slot and a door-shaped hole, and the card slot cooperates with the tenon provided on the base, and the base is provided with a ball stud for locking the needle feeding mechanism that can pass through the door-shaped hole.

Preferably, the tenon includes a cylindrical pin and a side protruding line disposed at one end of the cylindrical pin, the cylindrical pin is disposed on the base, and the side protruding line fits into the slot.

Preferably, one end of the left press plate and the right press plate adopts a three-layer ladder structure of the top layer, the middle layer and the bottom layer. The upper platen includes a part connected to the intermediate stepped structure of the lower platen pair and a portion extending above the bottom layer ladder structure of the lower platen pair from this portion, and this part includes the downward platen pair for forming the gap with the lower platen pair The slanting extension section above the slant, the protrusion is located in the middle of the lower platen pair and adjacent to the bottom ladder structure.

Preferably, the channel is a space surrounded by the upper surface of the substrate, the opposite side wall surfaces of the left and right pressure plates, and the inner convex upper edges of the opposite sides of the left and right pressure plates.

Preferably, the push pin mechanism also includes a gear meshed with the push pin rack, and a power device connected to the gear, the power device is arranged on the lower pressing plate pair, and the lower shell is provided with a power device connected to the power device. switch panel.

Preferably, the paper clip fixing device further includes an upper cover for closing the pin pushing mechanism.

Preferably, the needle feeding mechanism includes a splayed piece, a spring, a guide rod connected to the base, and a movable needle carrier set on the guide rod; the two ends of the spring are respectively connected to the base and the needle carrier The splayed piece includes a connecting piece and a screw hole on the upper end of the connecting piece for connecting the needle carrier, the lower end of the connecting piece is provided with a pin hole matching with a ball stud, and the ball stud is arranged on the base.

Preferably, the base is provided with an annular groove, and the lower end of the lower shell is inserted into the annular groove.

The method for fixing the agricultural water-sensitive paper of the above-mentioned paper clip fixing device comprises the following steps:

1) After separating the base and the needle-feeding mechanism from the lower case, put a plurality of paper clips into the needle-feeding mechanism, then make the needle-feeding mechanism extend into the lower case, and connect the base with the lower case;

2) using the needle sending mechanism to send a paper clip on the outermost side of the lower shell close to the passage into the passage through the needle sending through hole and the needle sending through hole in sequence;

3) After step 2), the water-sensitive paper to be fixed and the object to be fixed (crop leaves, etc.) are sent into the gap; The movement of the bump, the paper clip in the process of passing through the bump and moving towards the gap, sequentially completes the stretching and the clamping of the water-sensitive paper and the fixed object until the bump and the inner ring of the paper clip Restoring the shape after separation, thereby clamping and fixing the water-sensitive paper and the object to be fixed;

4) After step 3), the push pin rack moves in reverse until the needle feed mechanism can send the next paper clip into the passage through the needle feed through hole and the needle feed through hole;

5) Repeat step 3)-step 4) until all water-sensitive papers and objects to be fixed are fixed.

The beneficial effects of the present invention are reflected in:

The invention adopts the push pin rack to push the paper clip, so that the paper clip moves to the bump along the rack channel formed by the lower pressing plate pair and the base plate, the pushing force is uniform, the deformation control of the paper clip is precise, and the clamping and fixing are accurate and reliable; The paper clips are pushed into the rack channel one by one, and the paper clips can be fixed multiple times in a row according to a certain time interval, so it has the characteristics of good fixing effect, time saving and labor saving, simple operation, accuracy and high efficiency.

Description of drawings

Fig. 1 is the general assembly structure schematic diagram of agricultural water-sensitive paper clip fixing device of the present invention;

Fig. 2 is the structural representation of the lower case of the agricultural water-sensitive paper clip fixing device of the present invention;

Fig. 3 is a schematic structural view of the substrate of the agricultural water-sensitive paper clip fixing device of the present invention;

Fig. 4 is a schematic structural view of the lower platen pair of the agricultural water-sensitive paper clip fixing device of the present invention, wherein (a) is a schematic diagram of the arrangement of the left platen and the right platen, and (b) is the A-A sectional view of (a);

Fig. 5 is an assembly schematic diagram of the push pin mechanism of the agricultural water-sensitive paper clip fixing device of the present invention;

Fig. 6 is an assembly schematic diagram of the needle feeding mechanism of the agricultural water-sensitive paper clip fixing device of the present invention;

Fig. 7 is a structural schematic diagram of the tenon of the agricultural water-sensitive paper clip fixing device according to the present invention;

In the figure: 1—upper cover, 2—bolt, 3—upper pressure plate, 4—lower pressure plate pair, 5—base plate, 6—lower shell, 7—switch panel, 8—base, 9—tenon, 10—ball head Pin, 11-paper clip; 21-needle delivery through hole, 22-card slot, 23-door-shaped hole; 31-projection, 32-needle delivery through hole; 41-left pressure plate, 42-right pressure plate; 51-push pin Rack, 52—gear, 53—support, 54—power unit; 61—guide rod, 62—needle carrier, 63—horoscope, 64—spring; 91—protruding bar.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The examples are only used to explain the present invention, not to limit the present invention.

Example 1

Referring to Fig. 1, the agricultural water-sensitive paper clip fixing device of the present invention is mainly composed of an upper cover 1, a bolt 2, an upper platen 3, a lower platen pair 4, a base plate 5, a lower case 6, a switch panel 7, a base 8, and a tenon 9 , a ball pin 10, a push needle mechanism and a needle delivery mechanism; the upper platen 3 is set on the lower platen pair 4; It is fixed on the upper end of the lower case 6.

Referring to FIG. 2 , the lower shell 6 is composed of a support platform and a hollow column connected to the lower end of the support platform, and has a T-shaped structure as a whole. The center position of the upper end plane of the support platform is provided with a needle feeding through hole 21 communicating with the hollow column, and a pair of bolt mounting holes on both sides. The left and right sides of the lower end of the hollow column are symmetrically provided with draw-in slots 22 , and the middle position of the lower end (ie between the two draw-in slots) is provided with a door-shaped hole 23 . The middle part of the hollow column is also provided with a positioning installation hole and a wiring hole for the switch panel 7. The switch panel 7 is fixed on the hollow column through the positioning installation hole, and the cables are drawn out through the wiring hole.

Referring to FIG. 3 , the upper plane of the base plate 5 is provided with a bump 31 , when the paper clip is pushed and passes through the bump 31 , the inner ring of the paper clip can be lifted by the bump 31 , thereby providing conditions for stretching the inner and outer rings of the paper clip. The height of the bump 31 should not exceed the maximum elastic deformation of the paper clip, so as to ensure that the inner and outer rings of the paper clip can securely clamp the water-sensitive paper and the object to be fixed by utilizing the resilience characteristic. The substrate 5 is also provided with 5 via holes, specifically including: four edge via holes for installing the bolt 2, and a central via hole corresponding to the position of the above-mentioned needle feed through hole 21 (ie, the needle feed via hole 32) . The base plate 5 is fixed on the upper end plane of the support platform of the lower shell 6 along with the bolts 2 passing through the edge holes.

Referring to FIG. 4 , the lower platen pair 4 includes a left platen 41 and a right platen 42 arranged in parallel on the base plate 5 at intervals. The same end of the left press plate 41 and the right press plate 42 is in the shape of three layers of steps, which are raised successively from the ends: the bottom step is used for the positioning (alignment) space of the water-sensitive paper and the object to be fixed, and the middle step is used for The upper pressing plate 3 is installed and fixed, and the top steps are coplanar with the upper surfaces of the left pressing plate 41 and the right pressing plate 42. Both the left pressing plate 41 and the right pressing plate 42 are provided with 2 through holes for installing the bolts 2, one of which is located on the middle step, and the upper pressing plate 3 is fixed on the middle step with the bolt 2 passing through the through holes. The right pressing plate 42 is also provided with two through holes, which are used as mounting positioning holes for the bracket 53 of the power unit 54 on the lower pressing plate pair 4 . After the paper clip 11 is ejected upwards from the needle delivery hole 32 at the center of the base plate 5 , it can just be embedded in the channel formed between the inner sides of the left pressing plate 41 and the right pressing plate 42 .

Referring to Fig. 5, after the left pressing plate 41 and the right pressing plate 42 are installed on the base plate 5, the channel formed between the left pressing plate 41 and the right pressing plate 42 is called a rack channel, and the rack channel stops at the bump 31 on the base plate. 5, the position is specifically located between the above-mentioned intermediate ladder and the bottom ladder. The push pin mechanism includes a bracket 53, a push pin rack 51 embedded in the rack channel between the left press plate 41 and the right press plate 42, a gear 52 meshed with the push pin rack 51, and a gear 52 for driving the pin. The power unit 54. The bracket 53 is used to install and fix a power device 54 (for example, a stepping motor, etc.) on the right pressing plate 42, and the power device 54 is connected to the switch panel 7 through a cable. The power unit 54 rotates positively and negatively through the drive gear 52, allowing the push pin rack 51 to move forward and backward in the rack channel. 31 places are propped open.

The push pin mechanism and the rack channel are enclosed in the upper cover 1 and connected with the lower case 6 as a whole. The paper clip is pushed by the push pin rack 51 in the rack channel, and the outer ring of the paper clip is in contact with the channel to prevent the paper clip from coming out of the rack channel. When the paper clip is pushed to the protrusion 31 by the push pin rack 51 in the rack channel, the inner ring of the paper clip is pushed up by the protrusion 31 to realize the expansion of the inner and outer ring of the paper clip.

Described upper platen 3 is made up of the part (through bolt 2) that is connected with the intermediate stepped structure of lower platen pair 4 and the part extending above the bottom ladder structure of downward platen pair 4 from this part, and this part is formed by downward platen pair 4 The gap distance between this extension and the lower platen pair 4 tends to increase, and is used to cooperate with the paper clips that are gradually stretched, and at the same time, make the paper clips clamp the fixed object.

Referring to FIG. 6 , the needle feeding mechanism is fixed on the base 8 . The base 8 is in the shape of "back" due to the ring groove at the central position. A guide rod 61 is installed in the central area of the base surrounded by the ring groove. The needle table 62 can support a plurality of paper clips that are serially sleeved on the guide rod 61 and arranged in a stacked state. The lower end of the needle carrier 62 is connected to the spring 64 in the central area of the base; one side of the needle carrier 62 is fixed with a splayed piece 63, and the upper screw hole of the splayed piece 63 is used to connect the splayed piece 63 and the needle carrier 62 through screws. Fixed together, the lower pin hole of the splayed piece 63 cooperates with the ball stud 10 that can extend into the base 8 to lock or loosen the needle stage 62: the ball stud 10 is inserted into the lower pin hole of the splayed piece 63, and The needle table 62 compresses the spring 64 and is locked on the base, which is convenient for adding paper clips in batches; the ball pin 10 is pulled out of the lower pin hole of the splayed piece 63, and the needle table 62 is loosened from the base and is moved upward by the spring 64. When it is lifted up, the paper clips threaded on the guide rod 61 are pushed out into the rack channel of the needle pushing mechanism. The pin hole at the lower end of the splayed piece 63 is elongated, so that the ball stud 10 can lock the needle carrier 62 conveniently and quickly. There is also a protrusion on one side of the needle loading platform 61, so that the overall shape of the needle loading platform 61 corresponds to the shape of the needle feeding through hole 21, but it is different from the shape of the needle feeding through hole 32 at the center of the substrate 5, ensuring that the needle loading When the platform 62 is pushed up by the spring 64, it can be finally positioned on the lower plane of the base plate 5, which can prevent the needle carrier platform 62 from detaching from the guide rod 61, and can also make the paper clips loaded in a batch can be used as much as possible.

Referring to FIG. 7 , the tenon 9 is a cylinder-like connector with side protrusions 91 , and the side protrusions 91 are close to one end of the cylinder. The two tenons 9 are inserted into the base 8 along both sides of the outer wall surface of the ring groove of the base 8. When the lower end of the hollow column of the lower shell 6 is embedded in the ring groove of the base 8, the side protrusions 91 can be used to insert into the corresponding slot at the lower end of the hollow column of the lower shell 6. 22, the connection between the base 8 and the lower case 6 is realized. The purpose of inserting or pulling out the two latches 9 into or out of the corresponding side slots 22 in opposite directions (both sides of the base) is to realize the connection or separation of the base 8 and the lower case 6 more easily. The door groove 23 at the lower end of the hollow column of the lower shell 6 is directly opposite to the ball stud 10, which facilitates the insertion of the ball stud 10 into the lower pin hole of the splayed piece 63, and the connection between the lower shell 6 and the base 8 and the pulling out of the ball stud 10. out.

The method for using the above agricultural water-sensitive paper clip fixing device comprises the following steps:

1) Disassembly: pull out the tenon 9 on both sides of the base 8, separate the needle feeding mechanism from the lower case 6; the lower ballast needle table 62 compresses the spring 64, pull out the ball stud 10 and insert it back In the pin hole at the lower end of the splayed piece 63, the needle carrier 62 is locked and does not move;

2) Needle loading: string multiple paper clips onto the guide rod 61 of the needle feeding mechanism and automatically drop onto the needle loading platform 62 until the paper clips are flush with the top of the guide rod 61;

3) Reinstallation: Insert the needle feeding mechanism back into the lower case 6, push in the tenons 9 on both sides of the base 8, so that the base 8 and the lower case 6 are connected as one; pull out the ball pin 10 and connect it with the lower end pin of the splayed piece 63 After the hole is disengaged, insert the ball head pin 10 back, the spring 64 stretches upwards and pushes up the needle carrier table 62, and the paper clip is pushed out through the needle feeding through hole 21 and the needle feeding through hole 32 until it is sent into the left pressing plate 41 and the right pressing plate In the rack channel formed between 42;

4) Alignment: Align the edge of the agricultural water-sensitive paper with the object to be fixed and send it into the gap between the upper platen 3 and the lower platen pair 4;

5) Fixing: touch the switch panel 7, push the pin rack 51 to push the paper clip in the rack channel to move toward the bump 31, the rack channel defines the outer ring of the paper clip, and the bump 31 pushes up the inner ring of the paper clip, thereby spreading the paper clip In the inner and outer rings, the open-shaped paper clip enters the gap and then clamps the water-sensitive paper and the fixed object; until the inner ring of the paper clip enters the gap with most of the paper clip and separates from the bump 31, the paper clip returns to its original shape, and the water The sensitive paper and the object to be fixed are clamped and fixed by paper clips;

6) Return: After step 5), touch the switch panel 7, and the push pin rack 51 moves in reverse to the initial position; the elastic force of the spring 64 drives the needle carrier 62 to move upward, ejects the next paper clip and sends it into the rack channel Inside;

7) Repeat steps 4) to 6) until all the water-sensitive papers and objects to be fixed are fixed; or, when the paper clips are exhausted and need to be refilled, return to step 1).

Example 2

Compared with Embodiment 1, by calculating the length and moving speed of the push pin rack 51 and setting corresponding delays for the corresponding buttons on the switch panel 7, a more automated use process can be realized. Specifically, after triggering the "Start" button on the switch panel 7, the gear 52 will forwardly rotate and push the paperclip according to the set first delay time, until the inner and outer rings of the paperclip are stretched to clamp the water-sensitive paper and are fixed. Object, and then continue to push until the bump 31 no longer supports the inner ring of the paper clip, the paper clip then returns to its original shape, and the first delay time ends; automatically enters the second delay time set, the gear 52 reverses, and the push pin rack 51 Return to the initial position, the second delay time ends; trigger the first delay time again, the gear 52 rotates forward...

The above-mentioned process is carried out repeatedly, until the user touches the "off" key on the switch panel 7.

Due to the setting of the first and second delay times and the corresponding forward and reverse actions of the gear 52, the device only needs to send the water-sensitive paper and the object to be fixed between the upper platen 3 and the lower platen pair 4 during use. The gap is enough, which improves the working efficiency of the use.

Features of the present invention include:

1) The mechanical structure of the whole machine is simple and can be manufactured with standard parts. The structure is simple and compact, which is conducive to mass production, and the cost of manufacturing and maintenance is low;

2) The key switch panel is adopted to simplify the operation during use, which is convenient and fast to use;

3) The opening and clamping process of the paper clip is accurate, continuous operation is possible, and the time interval between the two operations is convenient to set, and the time interval can also be manually controlled, thereby improving the operating efficiency and meeting the needs of different operations, which is conducive to more Well meet the automatic fixing needs of agricultural water-sensitive paper;

4) The upper platen and the lower platen form a certain angle, which is convenient for the alignment of the agricultural water-sensitive paper and the fixed object, and is easier to be clamped by paper clips;

5) Not only can it be used for the clamping and fixing of fixed objects such as water-sensitive paper and crop leaves, but it can also be used for fixing between two types of objects suitable for clamping by paper clips. It can be widely used in agricultural production and scientific experiments, etc. Wide range of applications.

Claims (10)

1. An agricultural water-sensitive paper clip fixing device is characterized in that: the fixing device includes a needle feeding mechanism, a needle pushing mechanism and an upper pressing plate (3), a lower pressing plate pair (4), a base plate ( 5), lower shell (6) and base (8); The lower end of the lower case (6) is connected to the base (8), and the upper end of the lower case (6) is provided with a needle feeding through hole (21); The lower pressing plate pair (4) comprises a left pressing plate (41) and a right pressing plate (42) arranged in parallel on the base plate (5), and a gap is left between the left pressing plate (41) and the right pressing plate (42) for connecting with the base plate (5). ) forms a space through which a paper clip travels; The base plate (5) is provided with a needle feeding through hole (32) and a bump (31) for cooperating with the inner ring of a paper clip; The needle sending mechanism is arranged on the base (8), and the lower case (6) is located outside the needle sending mechanism; The needle pushing mechanism includes a mechanism for pushing the paper clip pushed into the passage by the needle sending mechanism through the needle sending through hole (21) and the needle sending through hole (32) along the passage to pass through the protrusion (31). A reciprocating push pin rack (51); A space is left between the upper pressing plate (3) and the lower pressing plate pair (4) for the paper clip to protrude out of the channel after being stretched by the protrusion (3). 2. A paper clip fixing device for agricultural water-sensitive paper according to claim 1, characterized in that: the lower shell (6) is T-shaped, and the upper end of the lower shell (6) is provided with the upper platen (3) , The lower platen pair (4) and the base plate (5) are connected by bolts (2) into one platform, and the platform is provided with a convex needle-feeding through hole (21); the lower end of the lower shell (6) is provided with a card slot (22) and the door-shaped hole (23), the card slot (22) is matched with the tenon (9) arranged on the base (8), and the base (8) is provided with a traversable door for locking the needle feeding mechanism The ball stud (10) of font hole (23). 3. A paperclip fixing device for agricultural water-sensitive paper according to claim 2, characterized in that: the tenon (9) includes a cylindrical pin and a side protruding strip (91) arranged at one end of the cylindrical pin, the cylinder The shaped latch is arranged on the base (8), and the side protruding strips (91) are matched with the draw-in slots (22). 4. A paper clip fixing device for agricultural water-sensitive paper according to claim 1, characterized in that: one end of the left press plate (41) and the right press plate (42) adopts a three-layer ladder structure of the top layer, the middle layer, and the bottom layer, and the top layer ladder The structure is flush with the corresponding upper surfaces of the left pressing plate (41) and the right pressing plate (42), the lower pressing plate pair (4) extends along the horizontal direction, and the upper pressing plate (3) includes the middle of the lower pressing plate pair (4). The part connected to the ladder structure and the part extending above the bottom ladder structure of the lower platen pair (4) from this part, this part includes the lower platen pair (4) for forming the gap with the lower platen pair (4) In the extended section inclined upwards, the protrusion (31) is located in the middle of the lower platen pair (4) and adjacent to the bottom ladder structure. 5. A kind of agricultural water-sensitive paper clip fixing device according to claim 1, characterized in that: said channel is composed of the upper surface of the substrate (5), the opposite side walls of the left press plate (41) and the right press plate (42) and The space enclosed by the inner convex upper edge of the left pressing plate (41) and the opposite side of the right pressing plate (42). 6. A kind of agricultural water-sensitive paper clip fixing device according to claim 1, characterized in that: the pin pushing mechanism also includes a gear (52) meshed with the pin rack (51), and a gear (52) meshed with the pin rack (51), and The power unit (54) connected to the gear (52), the power unit (54) is arranged on the lower pressing plate pair (4), and the lower shell (6) is provided with a switch panel (7) that links to each other with the power unit (54). 7. A paper clip fixing device for agricultural water-sensitive paper according to claim 1, characterized in that: the paper clip fixing device further comprises an upper cover (1) for closing the push pin mechanism. 8. A paperclip fixing device for agricultural water-sensitive paper according to claim 1, characterized in that: the needle feeding mechanism includes a figure-eight piece (63), a spring (64), and a guide rod (61) connected to the base (8). ) and a movable needle stage (62) arranged on the guide rod (61); the two ends of the spring (64) are respectively connected with the base (8) and the needle stage (62); The piece (63) includes a connecting piece and a screw hole arranged on the upper end of the connecting piece, the splayed piece (63) is connected with the needle carrier (62) through the screw hole, and the lower end of the connecting piece is provided with a pin that cooperates with the ball stud (10). hole, the ball stud (10) is arranged on the base (8). 9 . The agricultural water-sensitive paper clip fixing device according to claim 1 , characterized in that: the base ( 8 ) is provided with a ring groove, and the lower end of the lower case ( 6 ) is inserted into the ring groove. 10 . 10. The method for fixing the agricultural water-sensitive paper of the paper clip fixing device as claimed in claim 1, characterized in that: comprising the following steps: 1) After separating the base (8) and the needle feeding mechanism from the lower case (6), put multiple paper clips into the needle sending mechanism, then let the needle feeding mechanism extend into the lower case (6), and connect the base (8) and the lower case The shell (6) is connected; 2) Send a paper clip in the lower case (6) on the outermost side of the passage through the needle sending through hole (21) and the needle sending through hole (32) into the passage through the needle sending mechanism; 3) After step 2), send the water-sensitive paper to be fixed and the object to be fixed into the gap; then make the push pin rack (51) push the paper clip sent into the passage toward the The block (31) moves, and the paper clip, in the process of passing through the bump (31) and moving toward the gap, completes the stretching and the clamping of the water-sensitive paper and the fixed object in sequence until the bump ( 31) restoring the shape after being separated from the inner ring of the paper clip, thereby clamping and fixing the water-sensitive paper and the object to be fixed; 4) After step 3), make the push needle rack (51) reversely move until the needle feeding mechanism can send the next paper clip through the needle feeding through hole (21) and the needle feeding through hole (32). into the channel; 5) Repeat step 3)-step 4) until all water-sensitive papers and objects to be fixed are fixed.