CN220243617U - Needle cylinder solder paste split charging equipment - Google Patents

Abstract

The utility model relates to a cylinder solder paste split charging device, which comprises: the discharging mechanism is fixed on the frame and comprises a discharging hole for outputting solder paste. The fixture includes mount pad and clamping assembly, but the mount pad vertical sliding ground is connected in the frame, and clamping assembly is used for the centre gripping pull handle, but two clamping assembly lateral sliding ground are connected in the mount pad, are formed with the centre gripping space between two clamping assembly, and two clamping assembly can be close to each other in order to reduce the centre gripping space, or keep away from each other in order to increase the centre gripping space, and fixture has ejection of compact position and ends the material position, and ejection of compact position is located the top that ends the material position, under ejection of compact position, and the bottom in the barrel is stretched into to the discharge gate, under stopping the material position, the opening part of barrel is withdrawed from to the discharge gate. The driving piece drives the mounting seat to drive the clamping assembly to vertically slide, the clamping mechanism is driven by the driving piece to move at a constant speed towards the stop position when being positioned at the discharge position, and the discharge port synchronously discharges until the clamping mechanism is positioned at the stop position and then stops discharging.

Description

Needle cylinder solder paste split charging equipment

Technical Field

The utility model relates to the technical field of split charging equipment, in particular to cylinder tin paste split charging equipment.

Background

The soldering paste is a novel soldering material, has certain viscosity at normal temperature, can be used for initially sticking electronic components at a set position, and is used for soldering the soldered components and the printed circuit pads together to form permanent connection along with volatilization of a solvent and part of additives at a soldering temperature.

The cylinder solder paste is suitable for small-gap soldering of spot tin. Some use traditional cylinder tin cream partial shipment mode be the manual work with the tin cream in filling cylinder inside, the manual work filling is difficult for causing the tin cream at the inside uneven distribution of cylinder, produces the bubble, leads to the quality of filling relatively poor. The other part uses relevant solder paste partial shipment equipment to carry out the mode of partial shipment is that place the cylinder on the support of equipment, and the discharge gate with the solder paste bucket is aimed at in the cylinder and is filled, but the support size of placing the cylinder when this kind of equipment leaves the factory is fixed usually, can't the cylinder of different specification size, and the commonality is relatively poor.

Disclosure of Invention

The utility model aims to provide a cylinder tin paste split charging device which can improve split charging quality of cylinder tin paste and realize accurate quantitative charging and has universality.

In order to solve the technical problems, the utility model adopts the following technical scheme.

The utility model provides a cylinder tin paste split charging device, which comprises a cylinder body with an opening at the top and pull handles protruding from two sides of the cylinder body, wherein the cylinder tin paste split charging device comprises: a frame; the discharging mechanism is fixed on the frame and comprises a discharging hole for outputting solder paste; the clamping mechanism comprises a mounting seat and clamping assemblies, wherein the mounting seat can be vertically and slidably connected to the frame, the clamping assemblies are used for clamping the pull handles, the two clamping assemblies can be transversely and slidably connected to the mounting seat, a clamping space for placing a cylinder body is formed between the two clamping assemblies, the two clamping assemblies can be mutually close to reduce the clamping space or mutually far away from the clamping space to enlarge the clamping space, when the mounting seat drives the clamping assemblies to vertically slide, the clamping mechanism is provided with a discharging position and a stopping position, the discharging position is positioned above the stopping position, the discharging hole stretches into the bottom in the cylinder body in the discharging position, and the discharging hole exits from the opening of the cylinder body in the stopping position; the driving piece drives the mounting seat to drive the clamping assembly to vertically slide, the clamping mechanism is in the discharging position, the driving piece drives the clamping mechanism to move towards the stopping position at a constant speed, and the discharging port synchronously discharges until the clamping mechanism is positioned at the stopping position and then stops discharging.

In some embodiments of the present application, the clamping assembly comprises a clamping block and a screw; the clamping block comprises a connecting part, a nut seat and a supporting plate; the connecting part can be transversely and slidably connected with the mounting seat, the nut seat and the supporting plate are respectively connected with the two ends of the connecting part, the nut seat is positioned above the supporting plate, the nut seat is provided with a threaded hole, and the supporting plate is used for supporting the pull handle; the screw rod is in threaded holes of the nut seat in a threaded mode, can be in butt joint with the pull handle, and clamps the pull handle between the screw rod and the supporting plate.

According to some embodiments of the present application, the screw is close to one end of the support plate and is provided with a pressing block, the cross-sectional area of the pressing block is larger than that of the screw, and the pressing block can be abutted to the pull handle.

According to some embodiments of the present application, the pressing block is provided with an anti-slip pad on one side close to the supporting plate.

According to some embodiments of the present application, the mounting seat is provided with an upper chute and a lower chute which are arranged at intervals, the upper chute is located above the lower chute, and both the upper chute and the lower chute extend in a transverse direction; the connecting portion is provided with an upper sliding portion and a lower sliding portion which are arranged at intervals, the upper sliding portion is connected in the upper sliding groove in a sliding mode, and the lower sliding portion is connected in the lower sliding groove in a sliding mode.

In some embodiments of the present application, the frame includes a rail and a base; the guide rail is vertically arranged above the base, and the mounting seat can be vertically and slidably connected with the guide rail.

According to some embodiments of the present application, the guide rail includes an adjusting groove, a limiting block and a locking member; the regulating groove extends vertically, the limiting block is located above the mounting seat, the limiting block is slidably connected to the regulating groove, the locking piece can lock and fasten the limiting block on the regulating groove, so that the mounting seat can be abutted to the limiting block, the bottom of the cylinder body and the discharge hole keep a gap, or the locking piece releases the limiting block, so that the limiting block and the locking piece can slide up and down relative to the regulating groove.

This application some embodiments, discharge mechanism still include solder paste container, constant voltage booster and discharging pipe, solder paste container is used for loading the solder paste, constant voltage booster is used for right the solder paste container pressure boost, the both ends of discharging pipe distribute for input and output, the input intercommunication the solder paste container, the output is fixed in the frame, just the opening of the output of discharging pipe is the discharge gate.

In some embodiments of the present application, the discharging mechanism includes a valve, and the valve is disposed in the discharging pipe; the valve comprises a valve core and a valve rod which are connected, and the valve rod drives the valve core to move vertically; the valve rod drives the valve core to move towards the direction away from the discharge port, the valve core exits from the discharge port, so that the discharge port can output the solder paste, or the valve rod drives the valve core to move towards the direction close to the discharge port, and the valve core seals the discharge port, so that the discharge port stops outputting the solder paste.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

in the needle cylinder solder paste split charging equipment provided by the embodiment of the utility model, the mounting seat is driven by the driving piece to drive the clamping assembly to vertically slide, when the clamping mechanism is at the discharging position, the driving piece drives the clamping mechanism to move towards the stopping position at a uniform speed, and the discharging hole synchronously discharges until the clamping mechanism is at the stopping position, and then the discharging is stopped. Therefore, the solder paste can be uniformly filled into the needle cylinder, the filling stability of the needle cylinder for filling the solder paste is improved, the solder paste is uniformly distributed in the needle cylinder, air bubbles are not easy to generate, the quality of the needle cylinder solder paste is improved, and the accuracy of the filling weight of the needle cylinder solder paste is ensured. Therefore, the operation steps of manual filling are reduced, the process time consumption is less, and the split charging efficiency of the cylinder solder paste is improved. The two clamping assemblies can be mutually close to reduce the clamping space or mutually far away from to increase the clamping space, so that the clamping assemblies can clamp syringes of different specifications, the syringe tin paste split charging equipment can be used for filling syringes of different specifications, the universality is realized, and the production cost is saved.

Drawings

Fig. 1 is a schematic structural view of a syringe solder paste dispensing apparatus according to an embodiment of the present utility model, and is also a schematic structural view of a clamping mechanism located at a discharging position.

Fig. 2 is a schematic view of the clamping mechanism in fig. 1 in a stop position.

Fig. 3 is an enlarged partial schematic view of the clamping mechanism of fig. 2.

Fig. 4 is a cross-sectional view of the clamping mechanism of fig. 3.

Fig. 5 is a schematic view of the clamping mechanism of fig. 3 at another angle.

FIG. 6 is a cross-sectional view of the tapping pipe and valve of FIG. 1.

The reference numerals are explained as follows:

1. a frame; 11. a guide rail; 111. an adjustment tank; 112. a limiting block; 12. a base; 2. a discharging mechanism; 21. a discharge port; 22. a discharge pipe; 23. a valve; 231. a valve core; 232. a valve stem; 3. a clamping mechanism; 31. a mounting base; 311. an upper chute; 3110. a first opening; 312. a lower chute; 3120. a second opening; 32. a clamping assembly; 321. a clamping block; 3211. a connection part; 32111. an upper sliding part; 32112. a lower sliding part; 3212. a nut seat; 3213. a support plate; 322. a screw; 3221. briquetting; 4. a driving member; 5. a needle cylinder; 51. a cylinder; 52. a pull handle.

Detailed Description

While this utility model is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the utility model and is not intended to limit the utility model to that as illustrated.

Thus, rather than implying that each embodiment of the present utility model must have the characteristics described, one of the characteristics indicated in this specification will be used to describe one embodiment of the present utility model. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.

In the embodiments shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various elements of the utility model are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Preferred embodiments of the present utility model will be further elaborated below in conjunction with the drawings of the present specification.

Referring to fig. 1 to 3, a syringe 5 of a syringe 5 solder paste dispensing apparatus according to an embodiment of the present utility model includes a barrel 51 having a top opening and pull handles 52 protruding from both sides of the barrel 51, and the syringe 5 solder paste dispensing apparatus includes a frame 1, a discharging mechanism 2, a clamping mechanism 3, and a driving member 4. The discharging mechanism 2 is fixed on the frame 1, and the discharging mechanism 2 comprises a discharging hole 21 for outputting solder paste.

The fixture 3 includes mount pad 31 and clamping component 32, but mount pad 31 vertical sliding ground is connected in frame 1, clamping component 32 is used for centre gripping pull handle 52, but two clamping component 32 lateral sliding ground are connected in mount pad 31, be formed with the centre gripping space that is used for placing barrel 51 between two clamping component 32, two clamping component 32 can be close to each other in order to reduce the centre gripping space, or keep away from each other in order to increase the centre gripping space, when mount pad 31 drove clamping component 32 vertical sliding, fixture 3 has ejection of compact position and stopping position, ejection of compact position is located the top of stopping position, under the ejection of compact position, bottom in barrel 51 is stretched into to discharge gate 21, under stopping position, the opening part of barrel 51 is withdrawed from to discharge gate 21.

The driving piece 4 drives the mounting seat 31 to drive the clamping assembly 32 to vertically slide, when the clamping mechanism 3 is at the discharging position, the driving piece 4 drives the clamping mechanism 3 to move towards the stopping position at a constant speed, and the discharging hole 21 synchronously discharges until the clamping mechanism 3 is at the stopping position and then stops discharging.

Specifically, when the clamping mechanism 3 is located at the stopping position, the two clamping assemblies 32 are adjusted according to the specification and the size of the syringe 5, so that the clamping space conforms to the size of the cylinder 51, and the clamping assemblies 32 clamp the pull handle 52 of the syringe 5. At this time, the driving member 4 drives the mounting seat 31 to drive the clamping assembly 32 to slide upwards, so that the clamping mechanism 3 slides to the discharging position, i.e. the discharging hole 21 extends into the bottom of the barrel 51. Then the driving part 4 drives the mounting seat 31 to drive the clamping assembly 32 to start moving downwards at a constant speed, namely, the clamping mechanism 3 moves towards the stopping position at a constant speed, and the discharge port 21 synchronously outputs solder paste into the cylinder 51, so that the solder paste is uniformly filled into the cylinder 51 along with the constant speed movement of the cylinder 51, and the discharge port 21 stops outputting the solder paste until the clamping mechanism 3 reaches the stopping position. At this time, the operator can take down the cylinder 5 filled with solder paste and put in a new cylinder 5 to repeat the above operations.

Therefore, in the tin paste sub-packaging device of the needle cylinder 5 provided by the embodiment of the utility model, the mounting seat 31 is driven by the driving piece 4 to drive the clamping assembly 32 to vertically slide, when the clamping mechanism 3 is at the discharging position, the clamping mechanism 3 is driven by the driving piece 4 to move towards the stopping position at a constant speed, and the discharging hole 21 synchronously discharges until the clamping mechanism 3 is at the stopping position and then stops discharging. Therefore, the solder paste can be uniformly filled into the needle cylinder 5, the filling stability of the needle cylinder 5 for filling the solder paste is improved, the solder paste is uniformly distributed in the needle cylinder 5, bubbles are not easy to generate, the quality of the solder paste of the needle cylinder 5 is improved, and the accuracy of the filling weight of the solder paste of the needle cylinder 5 is ensured. Therefore, the operation steps of manual filling are reduced, the process time consumption is reduced, and the tin paste split charging efficiency of the needle cylinder 5 is improved. The two clamping assemblies 32 can be mutually close to reduce the clamping space or mutually far away from the clamping space to increase the clamping space, so that the clamping assemblies 32 can clamp the syringes 5 with different specifications, the syringe 5 solder paste split charging equipment can be used for filling the syringes 5 with different specifications, the universality is realized, and the production cost is saved.

Referring to fig. 3 to 4, the clamping assembly 32 includes a clamping block 321 and a screw 322. The clamp block 321 includes a connecting portion 3211, a nut seat 3212, and a support plate 3213. The connecting portion 3211 is slidably connected to the mounting seat 31 in a lateral direction, the nut seat 3212 and the supporting plate 3213 are respectively connected to two ends of the connecting portion 3211, the nut seat 3212 is located above the supporting plate 3213, the nut seat 3212 is provided with a threaded hole, and the supporting plate 3213 is used for supporting the pull handle 52. The screw 322 is screwed into the threaded hole of the nut seat 3212, the screw 322 can be abutted against the pull handle 52, and the pull handle 52 is clamped between the screw 322 and the support plate 3213.

The screw 322 is abutted against the pull handle 52, so that the stability of the clamping assembly 32 for clamping the syringe 5 is increased, and the syringe 5 can stably slide along with the mounting seat 31. Meanwhile, the distance between the screw 322 and the supporting plate 3213 is adjusted, so that the clamping assembly 32 can be matched with pull handles 52 of syringes 5 with different specifications, and the clamping assembly is universal. The structure of the nut seat 3212 and the supporting plate 3213 facilitates the pull handle 52 of the needle cylinder 5 to be placed between the nut seat 3212 and the supporting plate 3213, facilitates the replacement of the needle cylinder 5, and improves the production efficiency.

Referring to fig. 4, a pressing block 3221 is disposed at one end of the screw 322 near the supporting plate 3213, the cross-sectional area of the pressing block 3221 is larger than that of the screw 322, and the pressing block 3221 can be abutted against the pull handle 52. The design of the pressing block 3221 is added, so that the contact area of the pull handle 52 of the clamping needle cylinder 5 can be increased when the screw 322 is pressed down, and the clamping is more stable. In this embodiment, the compacts 3221 are circular, and in other embodiments, the compacts 3221 may also be rectangular or other polygonal shapes.

One side of the pressing block 3221, which is close to the supporting plate 3213, is provided with an anti-slip pad. The anti-slip pad can increase friction force when being abutted against the surface of the pull handle 52 of the needle cylinder 5, so that clamping is more stable, and the anti-slip pad is used for preventing the pressing block 3221 from wearing the surface of the pull handle 52 of the needle cylinder 5, so that the factory packaging quality of solder paste of the needle cylinder 5 is ensured. The anti-slip pad can be made of rubber material, but is not limited thereto.

Referring to fig. 5, the mounting seat 31 is provided with an upper chute 311 and a lower chute 312 arranged at intervals, the upper chute 311 is located above the lower chute 312, and the upper chute 311 and the lower chute 312 both extend in a lateral direction. The connecting portion 3211 is provided with an upper sliding portion 32111 and a lower sliding portion 32112 arranged at intervals, the upper sliding portion 32111 is slidably connected to the upper sliding chute 311, and the lower sliding portion 32112 is slidably connected to the lower sliding chute 312. Enabling the clamping assembly 32 to slide stably on the mounting block 31.

In some embodiments, the upper chute 311 and the lower chute 312 have openings at least at the same end in the lateral extension direction. Specifically, in the present embodiment, the upper chute 311 has a first opening 3110 at one end in the lateral extending direction, the lower chute 312 has a second opening 3120 at one end in the lateral extending direction, and the first opening 3110 and the second opening 3120 are located at the same end of the mounting seat 31, so that the upper sliding portion 32111 can slide into the upper chute 311 through the first opening 3110, and the lower sliding portion 32112 can slide into the lower chute 312 through the second opening 3120, thereby facilitating the assembly and disassembly of the clamping block 321.

Referring to fig. 1 and 2, the frame 1 includes a guide rail 11 and a base 12. The guide rail 11 is erected above the base 12, and the mount 31 is vertically slidably connected to the guide rail 11. Through the split type structural design that frame 1 includes guide rail 11 and base 12, can make things convenient for frame 1's equipment and dismantlement, be convenient for production and maintenance.

With continued reference to fig. 1 and 2, the guide rail 11 includes an adjustment slot 111, a stopper 112, and a locking member. The adjusting groove 111 extends vertically, the limiting block 112 is located above the mounting seat 31, the limiting block 112 is slidably connected to the adjusting groove 111, and the locking member can lock and fix the limiting block 112 on the adjusting groove 111, so that the mounting seat 31 can be abutted against the limiting block 112, a gap is kept between the bottom of the cylinder 51 and the discharge hole 21, or the locking member releases the limiting block 112, so that the limiting block 112 and the locking member can slide up and down relative to the adjusting groove 111. The bottom of the cylinder body 51 and the discharge hole 21 are prevented from being frequently impacted to be worn, the service life of the discharge hole 21 is prolonged, the bottom of the cylinder body 51 is protected from being damaged, and the production quality of the solder paste of the needle cylinder 5 is ensured. And by adjusting the position of the stopper 112 on the adjustment groove 111, it is possible to adapt to the case where the sliding distances of the mounting seats 31 are different due to the different lengths of the syringes 5.

The discharging mechanism 2 further comprises a solder paste container, a constant-pressure booster and a discharging pipe 22, wherein the solder paste container is used for loading solder paste, the constant-pressure booster is used for boosting the solder paste container, two ends of the discharging pipe 22 are distributed into an input end and an output end, the input end is communicated with the solder paste container, the output end is fixed on the frame 1, and an opening of the output end of the discharging pipe 22 is a discharging hole 21. The constant-pressure pressurizer pressurizes the solder paste container, so that solder paste in the solder paste container can be conveyed into the discharge pipe 22 and is output into the needle cylinder 5 from the discharge hole 21. The output efficiency of the solder paste is increased.

Referring to fig. 6, the discharging mechanism 2 includes a valve 23, and the valve 23 is disposed in the discharging pipe 22. The valve 23 comprises a valve core 231 and a valve rod 232 which are connected, and the valve rod 232 drives the valve core 231 to move vertically. Wherein, the valve rod 232 drives the valve element 231 to move towards the direction away from the discharge port 21, the valve element 231 withdraws from the discharge port 21, so that the discharge port 21 can output solder paste, or the valve rod 232 drives the valve element 231 to move towards the direction close to the discharge port 21, the valve element 231 seals the discharge port 21, so that the discharge port 21 stops outputting solder paste. And the output of the solder paste is convenient to control. In some embodiments, the cartridge 5 solder paste dispensing apparatus further includes an electronic control device, which is connected to the valve rod 232, and the electronic control device controls the movement of the valve rod 232 and the valve core 231, so as to more accurately control the opening and closing of the discharge port 21.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

1. Needle cylinder tin cream partial shipment equipment, the needle cylinder includes the barrel that has open-top and stretches convexly in the pull handle of barrel both sides, its characterized in that includes:

a frame;

the discharging mechanism is fixed on the frame and comprises a discharging hole for outputting solder paste;

the clamping mechanism comprises a mounting seat and clamping assemblies, wherein the mounting seat can be vertically and slidably connected to the frame, the clamping assemblies are used for clamping the pull handles, the two clamping assemblies can be transversely and slidably connected to the mounting seat, a clamping space for placing a cylinder body is formed between the two clamping assemblies, the two clamping assemblies can be mutually close to reduce the clamping space or mutually far away from the clamping space to enlarge the clamping space, when the mounting seat drives the clamping assemblies to vertically slide, the clamping mechanism is provided with a discharging position and a stopping position, the discharging position is positioned above the stopping position, the discharging hole stretches into the bottom in the cylinder body in the discharging position, and the discharging hole exits from the opening of the cylinder body in the stopping position;

the driving piece drives the mounting seat to drive the clamping assembly to vertically slide, the clamping mechanism is in the discharging position, the driving piece drives the clamping mechanism to move towards the stopping position at a constant speed, and the discharging port synchronously discharges until the clamping mechanism is positioned at the stopping position and then stops discharging.

2. The syringe solder paste dispensing apparatus of claim 1, wherein the clamping assembly comprises a clamping block and a screw;

the clamping block comprises a connecting part, a nut seat and a supporting plate;

the connecting part can be transversely and slidably connected with the mounting seat, the nut seat and the supporting plate are respectively connected with the two ends of the connecting part, the nut seat is positioned above the supporting plate, the nut seat is provided with a threaded hole, and the supporting plate is used for supporting the pull handle;

the screw rod is in threaded holes of the nut seat in a threaded mode, can be in butt joint with the pull handle, and clamps the pull handle between the screw rod and the supporting plate.

3. The syringe solder paste dispensing apparatus of claim 2, wherein a press block is provided at an end of the screw adjacent to the support plate, the cross-sectional area of the press block is larger than that of the screw, and the press block is abutted to the pull handle.

4. The syringe solder paste dispensing apparatus of claim 3, wherein the pressure block has a slip-resistant pad on a side thereof adjacent to the support plate.

5. The syringe solder paste dispensing apparatus according to claim 2, wherein the mounting base is provided with an upper chute and a lower chute which are arranged at intervals, the upper chute is positioned above the lower chute, and the upper chute and the lower chute both extend in the transverse direction;

the connecting portion is provided with an upper sliding portion and a lower sliding portion which are arranged at intervals, the upper sliding portion is connected in the upper sliding groove in a sliding mode, and the lower sliding portion is connected in the lower sliding groove in a sliding mode.

6. The syringe solder paste dispensing apparatus of claim 1, wherein the chassis comprises a rail and a base;

the guide rail is vertically arranged above the base, and the mounting seat can be vertically and slidably connected with the guide rail.

7. The syringe solder paste dispensing apparatus of claim 6, wherein the guide rail comprises an adjustment slot, a stopper, and a locking member;

the regulating groove extends vertically, the limiting block is located above the mounting seat, the limiting block is slidably connected to the regulating groove, the locking piece can lock and fasten the limiting block on the regulating groove, so that the mounting seat can be abutted to the limiting block, the bottom of the cylinder body and the discharge hole keep a gap, or the locking piece releases the limiting block, so that the limiting block and the locking piece can slide up and down relative to the regulating groove.

8. The syringe solder paste dispensing apparatus of claim 1, wherein the discharge mechanism further comprises a solder paste container, a constant pressure booster and a discharge tube, the solder paste container is used for loading the solder paste, the constant pressure booster is used for boosting the solder paste container, two ends of the discharge tube are distributed into an input end and an output end, the input end is communicated with the solder paste container, the output end is fixed on the frame, and an opening of the output end of the discharge tube is the discharge hole.

9. The syringe solder paste dispensing apparatus of claim 8, wherein the discharge mechanism comprises a valve disposed within the discharge tube;

the valve comprises a valve core and a valve rod which are connected, and the valve rod drives the valve core to move vertically;

the valve rod drives the valve core to move towards the direction away from the discharge port, the valve core exits from the discharge port, so that the discharge port can output the solder paste, or the valve rod drives the valve core to move towards the direction close to the discharge port, and the valve core seals the discharge port, so that the discharge port stops outputting the solder paste.