Piezoelectric dispensing valve

Abstract

The utility model discloses a piezoelectric dispensing valve which comprises a valve body and a heating device, the heating device comprises a heating cylinder used for heating a glue cylinder and a glue cylinder fixing assembly, the heating cylinder is arranged on one side of the valve body, the glue cylinder fixing assembly comprises a fixing bolt and a movable rod, the movable rod is rotatably installed on one side of the heating cylinder, and the fixing bolt is arranged on the other side of the heating cylinder. The movable rod comprises a mounting part which extends transversely, a first screw hole is formed in the mounting part, and during use, the mounting part rotates to the position above an opening of the heating cylinder, and the fixing bolt penetrates through the first screw hole to abut against a cylinder plug above the glue cylinder. By arranging the heating device, the fluidity of glue in the glue barrel is improved, the glue flows to the glue outlet more smoothly, a runner is prevented from being blocked, and the production quality is improved; by arranging the rotatable glue barrel fixing assembly, the operation during glue replacement can be simplified, the glue replacement efficiency is improved, and therefore the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to point gum valve technical field, especially point to a kind of piezoelectric point gum valve. BACKGROUND

[0002] Non-contact piezoelectric injection valve (piezoelectric point gum valve) is generally suitable for small injection amount of viscous fluid, and the viscosity of glue is adapted to tens of centi-pascal to several ten thousand centi-pascal;For example, it is adapted to ultraviolet light UV curing glue, epoxy resin glue, anaerobic adhesive, conductive silver glue, heat-conducting grease, solder paste, flux, silicone, hot melt type structural adhesive of circuit board of each electronic industry.

[0003] The piezoelectric point gum valve of prior art has the following defects: in point gum operation, due to poor flowability of glue at low temperature, glue heating device is often arranged on point gum valve, but the structure of glue heating device on the market is complex, and the steps are complicated and time-consuming when replacing glue, which greatly affects production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model provides a piezoelectric point gum valve for the defects of prior art, and the structure of glue heating device is optimized, so that the glue can be replaced more conveniently and quickly, the time consumed for replacing glue can be effectively reduced, and production efficiency is improved.

[0005] It should be noted that the valve body described in the utility model belongs to existing mature technical means in the art, which will not be described here.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A piezoelectric point gum valve, comprising a valve body and a heating device, the heating device comprises a heating cylinder for heating a glue cylinder and a glue cylinder fixing assembly, the heating cylinder is arranged on one side of the valve body, the glue cylinder fixing assembly comprises a fixing bolt and a movable rod, the movable rod is rotatably installed on one side of the heating cylinder, the movable rod comprises a transversely extending mounting portion, a first screw hole is arranged on the mounting portion, in use, the mounting portion is rotated above the opening of the heating cylinder, and the fixing bolt is in contact with the plug above the glue cylinder through the first screw hole.

[0008] Preferably, the movable rod further comprises a support portion, and the support portion is rotatably connected to one side of the heating cylinder through a rotating shaft.

[0009] Preferably, the support portion is integrally connected with the mounting portion.

[0010] Preferably, the support portion is rotatably connected to the outer wall of the heating cylinder through a rotating shaft.

[0011] Preferably, the axis of the rotating shaft is perpendicular to the axis of the heating cylinder.

[0012] Preferably, the upper part of the heating cylinder extends laterally with a mounting seat, and the top of the mounting seat is provided with a threading pipe.

[0013] Preferably, the upper end of the valve body is provided with an annular mounting frame, and the heating cylinder is arranged in the annular mounting frame during assembly.

[0014] Preferably, the mounting portion extends towards the side of the heating cylinder.

[0015] Preferably, the periphery of the fixing bolt is provided with anti-skid lines.

[0016] Preferably, the top of the valve body is provided with a third screw hole, the annular mounting frame is provided with a second through hole corresponding to the third screw hole, and the annular mounting frame is fixedly arranged on the top of the valve body through a bolt during assembly.

[0017] The utility model discloses a heating device is set up, improve the flowability of glue in glue cylinder, make the glue more freely flow to the glue outlet, avoid the blockage of flow channel, promote production quality, through setting up rotatable glue cylinder fixing assembly, can simplify the operation when replacing glue, improve the efficiency of replacing glue, thereby improve production efficiency, reduce production cost.

[0018] To make the structure characteristics, technical means and the concrete purpose and function that reach of the utility model more clear, the utility model is made further detailed explanation below combining with the specific embodiment and the drawing: DRAWINGS

[0019] Figure 1 It is the front view of the assembly structure of the embodiment of the utility model;

[0020] Figure 2 It is the exploded view of the whole structure of the embodiment of the utility model;

[0021] Figure 3 It is the enlarged view of A of Figure 2

[0022] Figure 4 It is the valve body structure schematic view of the embodiment of the utility model;

[0023] Figure 5 It is the exploded schematic view of the heating device structure of the embodiment of the utility model;

[0024] Figure 6 It is the bottom structure schematic view of the heating device of the embodiment of the utility model;

[0025] Figure 7 It is the first mounting seat structure schematic view of the embodiment of the utility model;

[0026] Figure 8 ​is the use state schematic diagram of the embodiment of the utility model.

[0027] The drawing mark explanation:

[0028] 10, connecting seat, 11, installation groove, 12, fifth through hole, 13, sixth through hole, 14, fourth through hole, 15, protruding block, 151, seventh through hole, 20, valve body, 201, third screw hole, 202, fifth screw hole, 203, sixth screw hole, 204, mounting hole, 30, heating device, 31, heating cylinder, 311, mounting seat, 312, U-shaped connecting piece, 313, first through hole, 314, third through hole, 32, glue cylinder fixing assembly, 321, fixing bolt, 322, movable rod, 323, first screw hole, 324, anti-skid line, 325, mounting part, 326, connecting part, 33, threading pipe, 34, cylinder plug, 341, annular protrusion, 35, air inlet pipe, 36, glue cylinder, 361, glue outlet nozzle, 40, annular mounting frame, 401, second through hole, 50, glue spraying assembly, 51, glue inlet, 52, glue outlet, 53, fourth screw hole, 54, second screw hole. DETAILED DESCRIPTION

[0029] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the position or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] Please refer to Figures 1-8As shown, a piezoelectric glue dispensing valve comprises a valve body 20 and a heating device 30, the heating device 30 comprises a heating cylinder 31 for heating a glue cylinder 36 and a glue cylinder fixing assembly 32, the heating cylinder 31 is arranged on one side of the valve body 20, the glue cylinder fixing assembly 32 comprises a fixing bolt 321 and a movable rod 322, the movable rod 322 is rotatably arranged on one side of the heating cylinder 31, the fixing bolt 321 is provided with anti-skid lines 324 on the periphery, the movable rod 322 comprises a transversely extending mounting portion 325, the mounting portion 325 extends towards one side of the heating cylinder 31, the mounting portion 325 is provided with a first screw hole 323, in use, the mounting portion 325 is rotated above the opening of the heating cylinder 31, and the fixing bolt 321 penetrates through the first screw hole 323 and abuts against a cylinder plug 34 above the glue cylinder 36. By arranging the heating device 30, the flowability of the glue in the glue cylinder 36 is improved, the glue flows more smoothly to the glue outlet 52, the flow channel is prevented from being blocked, and the production quality is improved; by arranging the rotatable glue cylinder fixing assembly 32, the operation when replacing the glue is simplified, the efficiency of replacing the glue is improved, and thus the production efficiency is improved and the production cost is reduced.

[0032] Specifically, the glue spraying assembly 50 is provided with a fourth screw hole 53 in the middle, and the connecting seat 10 is provided with a fourth through hole 14 corresponding to the fourth screw hole 53.

[0033] Specifically, the valve body 20 is provided with a fifth screw hole 202 at the bottom, the connecting seat 10 is provided with a sixth through hole 13 corresponding to the fifth screw hole 202, the fifth screw hole 202 and the sixth through hole 13 are both provided with two, the valve body 20 is provided with a sixth screw hole 203, the connecting seat 10 is longitudinally extended with a lug 15 at the top, the lug 15 is provided with a seventh through hole 151 corresponding to the sixth screw hole 203, the connecting seat is installed at the bottom of the valve body through bolts, the valve body 20 is provided with an annular mounting bracket 40 at the upper end, in assembly, the heating cylinder 31 is arranged on the annular mounting bracket 40, the valve body 20 is provided with a third screw hole 201 at the top, and the annular mounting bracket 40 is provided with a second through hole 401 corresponding to the third screw hole 201, in assembly, the annular mounting bracket 40 is fixedly installed at the top of the valve body 20 through bolts.

[0034] Specifically, the movable rod 322 further comprises a supporting portion 326, the supporting portion 326 is rotatably connected to one side of the heating cylinder 31 through a rotating shaft, the supporting portion 326 is integrally connected with the mounting portion 325, and the supporting portion 326 is rotatably connected to the outer wall of the heating cylinder 31 through the rotating shaft. The axial direction of the rotating shaft is perpendicular to the axial direction of the heating cylinder 31. In another embodiment of the utility model, the axial direction of the rotating shaft is parallel to the axial direction of the heating cylinder 31.

[0035] Specifically, the heating cylinder 31 upper part extends laterally with a mounting seat 311, the mounting seat 311 top is equipped with a threading pipe 33, the heating cylinder 31 interior is equipped with a heating assembly, the wiring harness controlling the heating assembly passes out through the threading pipe 33.

[0036] Specifically, the valve body 20 bottom is equipped with a connecting seat 10, specifically, the glue spraying assembly 50 middle part is equipped with a fourth threaded hole 53, the connecting seat 10 is equipped with a fourth through hole 14 corresponding to the fourth threaded hole 53, the glue spraying assembly 50 is fixed to the connecting seat 10 through bolts.

[0037] Specifically, the first connecting seat 10 is equipped with a sixth through hole 13, the valve body 20 bottom is equipped with a fifth threaded hole 202 corresponding to the sixth through hole 13, the valve body 20 is equipped with a sixth threaded hole 203, the connecting seat 10 top longitudinally extends with a lug 15, the lug 15 is equipped with a seventh through hole 151 corresponding to the sixth threaded hole 203, the valve body 20 is fixed to the connecting seat 10 through bolts.

[0038] Specifically, the connecting seat 10 lower part is equipped with a mounting groove 11 for the glue spraying assembly 50 embedding, the heating cylinder 31 passes through the annular mounting bracket 40 and is connected with the left side of the glue spraying assembly 50, the glue spraying assembly 50 is equipped with a glue inlet 51 and a glue outlet 52, the heating cylinder 31 bottom is equipped with a third through hole 314, during assembly, the glue inlet 51 extends into the heating cylinder 31 interior from the third through hole 314 and is connected with the glue outlet nozzle 361 of the glue cylinder 36, the glue outlet 52 is connected to the mounting hole 204 of the valve body 20 bottom, the connecting seat 10 is equipped with a fifth through hole 12 corresponding to the glue outlet 52.

[0039] Specifically, the heating cylinder 31 bottom is equipped with a U-shaped connecting piece 312 for the connecting seat 10 inserting, the left side of the glue spraying assembly 50 is equipped with a second threaded hole 54, the U-shaped connecting piece 312 is equipped with a first through hole 313 corresponding to the second threaded hole 54, the glue spraying assembly 50 is fixed to the heating cylinder 31 through bolts.

[0040] Specifically, the cylinder plug 34 is a cylindrical structure, the cylinder plug 34 is equipped with an air inlet pipe 35, the air inlet pipe 35 communicates with the interior of the cylinder plug 34, the lower part of the cylinder plug 34 extends outward with an annular protrusion 341 on the periphery, more specifically, the cylinder plug 34 is made of elastic rubber material, during assembly, the annular protrusion 341 is in interference fit with the inner wall of the glue cylinder 36, preventing the cylinder plug 34 from coming out.

[0041] When assembling, the plug 34 is inserted into the top opening of the glue cylinder 36, the glue cylinder 36 is put into the heating cylinder 31, the movable rod 322 is rotated to make one end of the mounting portion 325 above the plug 34, in order to achieve good fixing effect, the lower surface of the mounting portion 325 should be parallel to the upper surface of the plug 34, the fixing bolt 321 is adjusted, and the lower surface of the fixing bolt 321 abuts against the upper surface of the plug 34.

[0042] As shown in Figure 8 When replacing glue, the fixing bolt 321 is adjusted, the lower surface of the fixing bolt 321 is away from the upper surface of the plug 34, the movable rod 322 is rotated until the end, provided with the first threaded hole 323, of the movable rod 322 is no longer above the plug 34, the old glue cylinder 36 is taken out and a new glue cylinder 36 is replaced.

[0043] In summary, the utility model discloses a heating device is set up, improve the flowability of glue in glue cylinder, make the glue more smoothly flow to glue outlet, avoid the blockage of flow channel, promote production quality, through setting up rotatable glue cylinder fixing assembly, can simplify the operation when replacing glue, improve the efficiency of replacing glue, thereby improve production efficiency, reduce production cost.

[0044] The above is only the preferred embodiment of the utility model, and does not limit the utility model, so any modification, equivalent replacement, improvement etc. according to the technical actuality of the utility model to the above embodiment still belongs to the range of the utility model technical scheme.

Claims

1. A piezoelectric dispensing valve comprising a valve body and a heating device, characterized in that, The heating device comprises a heating cylinder for heating the glue cylinder and a glue cylinder fixing assembly, the heating cylinder is arranged on one side of the valve body, the glue cylinder fixing assembly comprises a fixing bolt and a movable rod, the movable rod is rotatably arranged on one side of the heating cylinder, the movable rod comprises a transversely extending mounting portion, the mounting portion is provided with a first screw hole, in use, the mounting portion is rotated above the opening of the heating cylinder, the fixing bolt is in abutment with the cylinder plug above the glue cylinder through the first screw hole.

2. A piezoelectric dispensing valve according to claim 1, wherein The movable rod further comprises a supporting portion, the supporting portion is rotatably connected to one side of the heating cylinder through a rotating shaft.

3. A piezoelectric dispensing valve according to claim 2, wherein The supporting portion is integrally connected with the mounting portion.

4. A piezoelectric dispensing valve according to claim 2, wherein The supporting portion is rotatably connected to the outer wall of the heating cylinder through a rotating shaft.

5. A piezoelectric dispensing valve according to claim 4, wherein The axial direction of the rotating shaft is perpendicular to the axial direction of the heating cylinder.

6. A piezoelectric dispensing valve according to claim 1, wherein The upper portion of the heating cylinder extends transversely to form a mounting seat, the top of the mounting seat is provided with a threading pipe.

7. A piezoelectric dispensing valve according to claim 1, wherein The upper end of the valve body is provided with an annular mounting frame, in assembly, the heating cylinder is arranged on the annular mounting frame.

8. A piezoelectric dispensing valve according to any one of claims 1 to 3, wherein The mounting portion extends towards one side of the heating cylinder.

9. A piezoelectric dispensing valve according to claim 1, wherein, The fixing bolt is provided with anti-skid lines on the periphery.

10. A piezoelectric dispensing valve according to claim 7, wherein The top of the valve body is provided with a third screw hole, the annular mounting frame is provided with a second through hole corresponding to the third screw hole, in assembly, the annular mounting frame is fixedly arranged on the top of the valve body through the bolt.

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