WO2022121580A1

WO2022121580A1 - High-precision quantitative glue dispensing mechanism

Info

Publication number: WO2022121580A1
Application number: PCT/CN2021/128899
Authority: WO
Inventors: 齐瑛; 高志敏
Original assignee: 惠州市开蒙医疗科技有限公司
Priority date: 2020-12-08
Filing date: 2021-11-05
Publication date: 2022-06-16
Also published as: CN214160302U

Abstract

A high-precision quantitative glue dispensing mechanism, comprising a base (1) and a glue injection apparatus (2) provided on the base (1); the glue injection apparatus (2) comprises a glue dispensing cylinder (21), a piston (22), a push rod (23) and a moving mechanism (24); the glue dispensing cylinder (21) is provided on the base (1), is filled with glue, and is used for adding the glue; the piston (22) is slidably provided in the glue dispensing cylinder (21); the push rod (23) is provided on the piston rod; and the moving mechanism (24) is provided on the base (1) and is used for pushing the push rod (23) to move. The piston is driven by the moving mechanism to move, so as to add the glue from the dispensing cylinder onto a metal sheet, and thus the glue added each time is quantitative, reducing the waste of the glue.

Description

A high-precision dispensing and quantitative mechanism

technical field

The present application relates to the technical field of dispensing structures, in particular to a high-precision dispensing and quantitative mechanism.

Background technique

Weight scales often have a transparent glass plate weighing pan. In the process of manufacturing the weight scale, the plastic bottom case and the glass plate are bonded by glue. There are wires and internal sensor components in the plastic bottom case. In order to cover the traces of these glues and parts such as wires and electronic devices, it is necessary to paste a metal sheet or other material between the plastic bottom case and the glass plate. The interface of the electronic weighing pan is more beautiful and tidy.

In the related art, the metal sheet is generally placed on the jig manually, and then glue is added to the metal sheet, and each set of jigs is matched with a set of pressing devices, and then the glass is placed on the jig and squeezed with the jig to compress. After the fixture and the product are preliminarily cured in an ultraviolet cold light furnace, cleaned, brushed and cleaned, they are finally cured in a UV furnace.

In view of the above-mentioned related art, the inventor believes that there are the following defects: the glue is added manually, so the amount of glue added each time is uncertain, so in order to make the connection strength between the metal sheet and the glass meet the requirements, generally use more Add glue to meet the requirements, thus causing excess glue to overflow, resulting in wasted glue.

Utility model content

In order to reduce the waste of glue, the present application provides a high-precision glue dispensing and quantitative mechanism.

A high-precision dispensing and quantitative mechanism provided by the application adopts the following technical solutions:

A high-precision glue dispensing quantitative mechanism includes a base and a glue injection device arranged on the base, the glue injection device includes a glue dispensing cylinder, a piston, a push rod and a moving mechanism, and the glue dispensing cylinder is arranged on the base and mounted on the base. There is glue and is used for adding glue, the piston is slidably arranged in the glue dispensing cylinder, the push rod is arranged on the piston rod, and the moving mechanism is arranged on the base and is used to push the push rod to move.

By adopting the above technical solution, the metal sheet is installed on the fixture, the moving mechanism starts to drive the push rod to move, the push rod moves to drive the piston to move, and the piston moves to add the glue in the dispensing cylinder to the metal sheet, so the amount of water added to the metal sheet is added each time. Glue is quantitative, which reduces glue waste.

Optionally, the moving mechanism includes a driving plate, a clamping component, and a moving component, the driving plate is slidably arranged on the base, the clamping component is arranged on the driving plate and is used for clamping the push rod, the The moving component is arranged on the base and connected with the driving board.

By adopting the above technical solution, the clamping assembly starts to clamp the push rod, the moving assembly starts to drive the drive plate to move, the drive plate moves to drive the clamp assembly and the push rod to move together, and the push rod moves to drive the piston to move to add glue. The clamping assembly releases the push rod, and the moving assembly starts to drive the drive plate and the clamping assembly to move back to their original positions, so as to add glue to the metal sheet.

Optionally, the clamping assembly includes a double-headed cylinder and a clamping plate, the double-headed cylinder is arranged on the driving plate, and the clamping plate is arranged on the piston rod of the double-headed cylinder and used to clamp the push rod.

By adopting the above technical solution, the double-headed air cylinder is activated to drive the splints to approach each other to clamp the push rod, thereby realizing the clamping of the push rod; Simple structure and convenient installation.

Optionally, the bottom end of the glue dispensing cylinder is provided with a glue dispensing tube with a diameter smaller than the diameter of the dispensing cylinder, and the bottom end of the glue dispensing tube is detachably provided with a glue dispensing needle.

By adopting the above technical solution, the size of the glue outlet is reduced by the glue outlet and the glue outlet, so as to control the addition of glue. At the same time, the glue outlet needle is removed, and then the push rod can be pulled to drive the piston to move. The glue is drawn into the glue dispenser through the glue tube, thereby improving the convenience of adding glue to the metal sheet and adding glue to the glue dispenser.

Optionally, the glue dispensing cylinder is provided with a cover, the push rod is slidably passed through the cover, and the push rod is provided with a space-saving surface that is clamped by a splint.

By adopting the above technical solution, the push rod is slidably installed on the cover, which reduces the probability of the push rod shaking during the movement process, and the setting of the avoidance surface reduces the probability of slippage when the splint drives the push rod to move. To improve the accuracy of adding glue each time, reduce the waste of glue, also improve the connection strength between the metal sheet and the glass, and improve the quality of the weight scale after installation.

Optionally, the cover is threadedly connected to the glue dispensing cylinder, and the glue dispensing cylinder is detachably arranged on the base through a connecting device.

After the dispensing cylinder has been used for a period of time, the glue is easy to stick to the dispensing cylinder, the rubber outlet tube or the glue dispensing needle, which is prone to blockage. Therefore, the amount of glue added will be less than the set value, reducing the gap between the metal sheet and the glass. The strength of the connection reduces the quality of the scale after installation;

By adopting the above technical solution, the dispensing cylinder is disassembled from the base, and then the cover, the push rod and the piston are disassembled from the dispensing cylinder by screwing the cover, and the dispensing needle is disassembled from the fixed tube, and then the disassembly is carried out. After cleaning, install the glue injection needle on the rubber outlet tube, push the piston into the glue dispensing cylinder, and turn the cap screw to connect it to the glue dispensing cylinder, so as to reduce the amount of added glue. Depending on the probability of the set value, the connection strength between the metal sheet and the glass is improved, and the quality of the scale is improved.

Optionally, the connecting device includes a fixing plate and a clamping plate, the fixing plate and the clamping plate are both connected to the base by screws, the fixing plate is sleeved on the glue dispensing cylinder, and the glue outlet pipe is clamped. It is arranged on the clamping plate and the glue dispensing cylinder is in contact with the clamping plate.

By adopting the above technical solution, the fixing plate can be disassembled from the base by screwing the screws, and then the rubber outlet pipe can be disassembled from the clamping plate, so as to disassemble the dispensing cylinder from the base for cleaning; Snap and install the rubber outlet tube on the snap plate, and then use the screws to fix the fixing plate, so as to realize the installation and removal of the dispensing cylinder.

Optionally, an elastic ring sleeved on the dispensing cylinder is snap-fitted on the fixing plate, the elastic ring is provided with an escape hole penetrating the elastic ring, and the fixing plate is threadedly Set screw on elastic ring.

When the dispensing cylinder is subjected to external force, displacement between the dispensing tube and the clamping plate and between the dispensing cylinder and the fixing plate is easy to occur, which will affect the amount of glue added to the metal sheet. Adding more glue will cause waste of glue, and adding less glue will cause a waste of glue. Will reduce the quality of the scale;

By adopting the above technical solution, the fixing screw is screwed against the elastic ring, so the elastic ring clamps the dispensing cylinder under the action of the fixing screw, which reduces the probability of displacement of the dispensing cylinder and reduces the probability of adding more or less glue , reducing the waste of glue and improving the quality of the scale.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. Drive the piston to move through the movement mechanism to add the glue in the dispensing cylinder to the metal sheet, so the glue added to the metal sheet is quantitative each time, thereby reducing the waste of glue;

2. By sliding the push rod through the cover, the probability of the push rod shaking during movement is reduced, and the setting of the avoidance surface reduces the probability of slippage when the splint drives the push rod to move, thereby improving the The accuracy when adding glue each time reduces the waste of glue, and also improves the connection strength between the metal sheet and the glass, and improves the quality of the weight scale after installation;

3. Remove the dispensing cylinder from the base, then remove the cover, push rod, piston and dispensing needle, and then clean the disassembled parts. After cleaning, install the dispensing needle on the dispensing tube. Push the piston into the dispensing cylinder, and turn the cap screw to connect it to the dispensing cylinder, thereby reducing the probability of adding glue less than the set value and improving the connection strength between the metal sheet and the glass. The quality of the scale has been improved.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present application;

Fig. 2 is the schematic diagram of partial explosion of the present application;

Reference numerals: 1. base; 11. moving groove; 2. glue injection device; 21. glue dispensing cylinder; 211, connecting pipe; 212, glue outlet; Tube; 216, cover; 22, piston; 23, push rod; 231, avoidance surface; 24, moving mechanism; 25, drive plate; 26, clamping assembly; 261, double-headed cylinder; 262, splint; 263, Crossbar; 27. Moving assembly; 271. Mounting seat; 272. Driving cylinder; 3. Connecting device; 31. Fixing plate; 32. Clamping plate; 33. Fixing screw; 34. Elastic ring; 35. Fixing ring; 36 , Avoidance hole.

Detailed ways

The present application will be further described in detail to 1-2 below in conjunction with the accompanying drawings.

The embodiment of the present application discloses a high-precision dispensing and quantitative mechanism.

Referring to FIG. 1 , the high-precision glue dispensing and quantitative mechanism includes a vertical base 1 and a glue injection device 2 arranged on the base 1 .

1 and 2, the glue injection device 2 includes a glue dispensing cylinder 21, a piston 22, a push rod 23, and a moving mechanism 24. The glue dispensing cylinder 21 is installed on the side wall of the base 1 and is filled with glue, and the glue dispensing cylinder 21 is vertical. In the straight state, the bottom end of the connecting pipe 211 is integrally provided with a truncated cone-shaped connecting pipe 211 , the diameter of the bottom end of the connecting pipe 211 is smaller than the diameter of the top end of the connecting pipe 211 , and the bottom end of the connecting pipe 211 is integrally provided with a vertical rubber outlet pipe 212 .

Referring to FIGS. 1 and 2 , the bottom end of the rubber outlet tube 212 is provided with a circular snap groove 213 , a fixed tube 215 is fixedly installed at the bottom of the snap groove 213 , and the bottom end of the fixed tube 215 extends vertically downward to the rubber tube 212 Below, at the same time, the axes of the connecting pipe 211, the rubber outlet pipe 212, and the fixed pipe 215 coincide with the axis of the glue dispensing cylinder 21. The fixed pipe 215 is sleeved and installed with a glue dispensing needle 214 for adding glue, and the fixed pipe 215 is inserted and installed. onto the dispensing needle 214.

Referring to FIGS. 1 and 2 , the dispensing cylinder 21 is detachably connected to the base 1 through a connecting device 3. The connecting device 3 includes a fixing plate 31 and a clamping plate 32. The fixing plate 31 and the clamping plate 32 are both fixed and installed on the base by screws. 1. On the side wall, and the fixing plate 31 is located above the clamping plate 32, the fixing plate 31 is provided with a first fixing hole penetrating the upper and lower surfaces of the fixing plate 31, and the clamping plate 32 is provided with two upper and lower through the clamping plate 32. In the second fixing hole on the surface, an elastic ring 34 is snap-fitted on the first fixing hole.

1 and 2, an annular fixing ring 35 is integrally provided on the outer side wall of the elastic ring 34 and is located near the top end of the elastic ring 34, and the lower surface of the fixing ring 35 abuts on the upper surface of the fixing plate 31, while the fixing ring 35 and the upper surfaces of the elastic ring 34 are flush; the elastic ring 34 and the fixing ring 35 are both elastic, and the side wall is provided with an escape hole 36 penetrating the elastic ring 34 and the fixing ring 35, so the elastic ring 34 and the fixing ring are squeezed. 35 can change the diameter size.

Referring to FIGS. 1 and 2 , the glue dispensing cylinder 21 slides through the inner side wall of the elastic ring 34 , the glue outlet tube 212 is clamped and installed on the second fixing hole, and the connecting tube 211 is in contact with the upper surface of the clamping plate 32 , and the glue dispensing needle 214 extends downward to the bottom of the base 1; the fixing plate 31 is threadedly connected with a fixing screw 33 pressed against the outer side wall of the elastic ring 34, so the elastic ring 34 clamps the dispensing cylinder under the action of the fixing screw 33. twenty one.

1 and 2, the piston 22 is slidably installed on the inner side wall of the glue dispensing cylinder 21, the top end of the glue dispensing cylinder 21 is threadedly connected with a cover 216, and the push rod 23 is vertically slid on the cover 216, and The bottom end of the push rod 23 is fixedly connected with the piston 22; the moving mechanism 24 is arranged on the base 1 and is used to push the push rod 23. The moving mechanism 24 includes a drive plate 25, a clamping assembly 26, and a moving assembly 27, which are located above the dispensing cylinder 21. The side wall of the base 1 is provided with a moving groove 11, and the cross-section of the moving groove 11 is T-shaped and communicates with the top of the base 1. The driving plate 25 is slidably installed on the side wall of the base 1 near the dispensing cylinder 21, and drives the The plate 25 is fixedly mounted with a sliding block vertically slidably mounted on the moving groove 11 .

1 and 2, the clamping assembly 26 is disposed on the drive plate 25 and used to clamp the push rod 23. The clamping assembly 26 includes a double-headed cylinder 261 and a clamping plate 262. The double-headed cylinder 261 is fixedly installed on the drive plate 25 near the On the side wall of the dispensing cylinder 21, and the double-headed cylinder 261 is in a horizontal state, and at the same time, the two pistons 22 of the double-headed cylinder 261 are fixedly installed with a crossbar 263, and the crossbar 263 extends to the push rod 23. There are two splints 262, and the two splints 262 are fixedly installed on one end of the two cross bars 263 close to the push rod 23, and the two splints 262 clamp the push rod 23 under the action of the double-headed cylinder 261, and push the push rod 23 at the same time. On the side wall of the rod 23 and on opposite sides of the rod 23 , there are defined avoidance surfaces 231 which are convenient for clamping by the clamping plate 262 , and the avoidance surfaces 231 run through the entire push rod 23 .

1 and 2, the moving assembly 27 includes a mounting seat 271 and a driving cylinder 272. The mounting seat 271 is fixedly mounted on the top end of the base 1 by screws, the driving cylinder 272 is fixedly mounted on the upper surface of the mounting seat 271, and the driving cylinder 272 piston The 22 rod penetrates vertically downward to the outside of the mounting seat 271 and is fixedly connected with the upper surface of the driving plate 25 .

The working principle of the embodiment of the present application is:

Install the metal sheet on the fixture, the double-headed air cylinder 261 is activated to drive the two clamping plates 262 to clamp the push rod 23, the driving cylinder 272 is activated to drive the driving plate 25 and the clamping plate 262 to move down, and the clamping plate 262 moves down to drive the push rod 23 and the piston 22 to move down. Move and squeeze the glue, so that the glue is added to the metal sheet through the glue dispensing needle 214. After the addition is completed, the double-headed air cylinder 261 is activated to drive the splint 262 away from the push rod 23; The glue added to the metal sheet is quantitative, thus reducing the waste of glue.

Remove the fixing plate 31 and the glue dispensing cylinder 21 from the base 1 by turning the screws, then loosen the elastic ring 34 by turning the fixing screw 33, so the glue dispensing tube 21 can be removed from the elastic ring 34, and then screw the seal. The cover 216 disassembles the cover 216, the push rod 23 and the piston 22 from the glue dispensing cylinder 21, disassembles the glue dispensing needle 214 from the fixed tube 215, and then cleans the disassembled parts. The needle 214 is sleeved and installed on the fixed tube 215, the piston 22 is pushed into the dispensing cylinder 21, the cover 216 is screwed to be threadedly connected to the dispensing cylinder 21, the dispensing cylinder 21 is passed through the elastic ring 34, and the fixing plate 31 is installed on the base 1, and finally, the glue outlet tube 212 is snap-fitted to the second fixing groove and the connecting tube 211 is in contact with the clip plate 32, and the fixing screw 33 is screwed against the elastic ring 34. Positioning is performed to reduce the probability that the added glue is less than the set value, improve the connection strength between the metal sheet and the glass, and improve the quality of the scale.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims

A high-precision glue dispensing and quantitative mechanism, characterized in that it comprises a base (1), a glue injection device (2) arranged on the base (1), and the glue injection device (2) comprises a glue dispensing cylinder (21), A piston (22), a push rod (23), a moving mechanism (24), the glue dispensing cylinder (21) is arranged on the base (1) and is filled with glue and used for adding glue, the piston (22) is slidingly arranged In the dispensing cylinder (21), the push rod (23) is arranged on the rod of the piston (22), and the moving mechanism (24) is arranged on the base (1) and is used to push the push rod (23) to move.
A high-precision dispensing and quantitative mechanism according to claim 1, characterized in that: the moving mechanism (24) comprises a driving plate (25), a clamping component (26), and a moving component (27), and the driving The plate (25) is slidably arranged on the base (1), the clamping component (26) is arranged on the driving plate (25) and is used for clamping the push rod (23), and the moving component (27) is arranged at on the base (1) and connected with the driving board (25).
The high-precision dispensing and dosing mechanism according to claim 2, wherein the clamping assembly (26) comprises a double-headed cylinder (261) and a clamping plate (262), and the double-headed cylinder (261) is provided with On the drive plate (25), the clamping plate (262) is arranged on the piston rod of the double-headed cylinder (261) and used to clamp the push rod (23).
A high-precision dispensing and quantitative mechanism according to claim 1, characterized in that: the bottom end of the dispensing cylinder (21) is provided with a rubber outlet pipe (212) whose diameter is smaller than the diameter of the dispensing cylinder (21). The bottom end of the glue dispensing tube (212) is detachably provided with a glue dispensing needle (214).
The high-precision dispensing and dosing mechanism according to claim 4, characterized in that: a cover (216) is provided on the dispensing cylinder (21), and the push rod (23) slides through the cover (216). On the cover (216), the push rod (23) is provided with an escape surface (231) which is clamped by the splint (262).
A high-precision glue dispensing quantitative mechanism according to claim 5, characterized in that: the cover (216) is threadedly connected to the glue dispensing cylinder (21), and the glue dispensing cylinder (21) is connected through a connecting device (216). 3) Removably arranged on the base (1).
A high-precision dispensing and quantitative mechanism according to claim 6, characterized in that: the connecting device (3) comprises a fixing plate (31), a clamping plate (32), the fixing plate (31) and the clamping plate (31) The connecting plates (32) are all connected to the base (1) by screws, the fixing plate (31) is sleeved on the glue dispensing cylinder (21), and the glue outlet pipe (212) is clamped and arranged on the clamping plate (32). ) and the glue dispensing cylinder (21) is in contact with the clamping plate (32).
A high-precision glue dispensing quantitative mechanism according to claim 7, characterized in that: an elastic ring (34) sleeved on the glue dispensing cylinder (21) is snap-fitted on the fixing plate (31), so The elastic ring (34) is provided with an escape hole (36) penetrating the elastic ring (34), and the fixing plate (31) is threadedly connected with a fixing screw (33) pressed against the elastic ring (34).