CN-121988498-A - Rotary dispensing mechanism for double-component AB glue

Abstract

The invention discloses a rotating dispensing mechanism for double-component AB glue, which comprises a screw rod glue pushing assembly, a rotating driving assembly and a valve body assembly, wherein the screw rod glue pushing assembly comprises a screw rod nut seat, two glue push rods are rotatably arranged on the screw rod nut seat, the rotating driving assembly comprises a first driving mechanism, a glue barrel fixing sleeve and a glue mixing pipe, the glue barrel fixing sleeve is provided with an A glue barrel and a B glue barrel which are respectively communicated with the glue mixing pipe, the valve body assembly comprises a curved needle head which is rotatably arranged, the glue mixing pipe is communicated with the curved needle head, the output end of the first driving mechanism is connected with the glue mixing pipe, and the glue mixing pipe drives the glue barrel fixing sleeve, the A glue barrel, the B glue barrel, the glue push rods and the curved needle head to linearly rotate around the length direction of the glue mixing pipe. The invention can meet the requirement of adapting the rotary glue pushing movement mode of the bi-component glue, so that the rotary movement and the glue pushing movement of the bi-component glue can be synchronously carried out, and the glue dispensing requirement of complex working conditions such as side walls, curved surfaces and the like of products can be met.

Inventors

• NI ZHIJUN
• DONG BO

Assignees

• 深圳市深微智控有限责任公司

Dates

Publication Date

20260508

Application Date

20260318

Claims (10)

1. 1. The rotary dispensing mechanism for the double-component AB glue comprises a screw rod glue pushing assembly and is characterized by further comprising a rotary driving assembly and a valve body assembly; The screw rod glue pushing assembly comprises a screw rod nut seat, wherein two glue push rods are rotatably arranged on the screw rod nut seat, the rotary driving assembly comprises a first driving mechanism, a glue barrel fixing sleeve and a glue mixing pipe, the glue barrel fixing sleeve is provided with a glue barrel A and a glue barrel B, and the glue barrel A and the glue barrel B are respectively communicated with the glue mixing pipe; The screw rod glue pushing assembly further comprises a ball screw and a mounting block, the screw rod nut seat is mounted on the ball screw, the screw rod nut seat is driven by the ball screw to move along the ball screw, the mounting block is fixed on one side of the screw rod nut seat, a push rod bearing is arranged on the mounting block, and two glue push rods are mounted on the inner ring of the push rod bearing; The output end of the first driving mechanism is connected with the glue mixing pipe, the glue mixing pipe drives the glue barrel fixing sleeve, the glue barrel A, the glue barrel B, the glue push rod and the curved needle to rotate around the straight line of the length direction of the glue mixing pipe, and the two glue push rods rotate around the center of the push rod bearing along with the rotation of the glue mixing pipe.
2. 2. The rotary dispensing mechanism for a two-component AB glue of claim 1, wherein said screw pushing assembly further comprises a first servomotor and a first timing belt, said first servomotor is disposed on one side of said ball screw, said first timing belt is disposed around an output end of said first servomotor and one end of said ball screw.
3. 3. The rotary dispensing mechanism for the two-component AB glue of claim 1, further comprising a rotary guide assembly, wherein the rotary guide assembly comprises a guide block, the guide block is provided with two push rod through holes and a clamping groove, two glue push rods respectively penetrate through the two push rod through holes to extend into the glue barrel A and the glue barrel B, and the clamping groove is clamped with the top ends of the glue barrel A and the glue barrel B.
4. 4. The rotary dispensing mechanism for two-component AB glue of claim 3 wherein said rotary guide assembly further comprises a second telescoping mechanism having an output rotatably coupled to said guide block.
5. 5. The rotary dispensing mechanism for the two-component AB glue of claim 4, further comprising a module fixing back plate, wherein the rotary guiding assembly further comprises a second servo motor, a guide rail, a sliding block and a bearing mounting seat, the guide rail is mounted on the module fixing back plate, the sliding block is arranged on the guide rail, the second servo motor and the bearing mounting seat are both arranged on the sliding block, the second servo motor drives the sliding block to slide along the guide rail, a guiding bearing is arranged in the bearing mounting seat, a guiding block is mounted on the inner ring of the guiding bearing, and the guiding block rotates around the center of the guiding bearing along with the rotation of the glue mixing pipe.
6. 6. The rotary dispensing mechanism for two-component AB glue of claim 1 wherein said rotary drive assembly further comprises a glue barrel flange having two mounting holes therethrough, said upper ends of said a and B glue barrels passing through said two mounting holes respectively to form a unitary body with said glue barrel flange.
7. 7. The rotary dispensing mechanism for two-component AB glue of claim 1, wherein said valve body assembly further comprises a rotary cylinder and a switch valve, said switch valve having an upper end in communication with the glue mixing tube and a lower end in communication with the curved needle, and an output end of said rotary cylinder being connected to a valve core of the switch valve.
8. 8. The rotary dispensing mechanism for two-component AB glue of claim 7 wherein said rotary drive assembly further comprises a hollow rotary tube, the upper end of said hollow rotary tube being connected to the lower end of the glue mixing tube, the lower end of said hollow rotary tube being either snap-fit, threaded or rigidly connected to the upper end of the on-off valve; The valve body assembly further comprises a rotating shaft enclasping block, the rotating shaft enclasping block is provided with a first enclasping through hole and a first enclasping gap communicated with the first enclasping through hole, one side of the rotating shaft enclasping block is provided with a first locking bolt for adjusting the width of the first enclasping gap, and the joint of the hollow rotating tube and the switching valve is located in the first enclasping through hole.
9. 9. The rotary dispensing mechanism for two-component AB glue of claim 8 wherein said lower end of said switch valve is snap-fit, threaded or rigidly connected to the upper end of said bent needle; The valve body assembly further comprises a needle head enclasping piece, the needle head enclasping piece comprises a second enclasping through hole and a second enclasping gap communicated with the second enclasping through hole, a second locking bolt for adjusting the width of the second enclasping gap is arranged on one side of the rotating shaft enclasping block, and the lower end of the hollow rotating tube and the upper end of the switching valve are positioned in the second enclasping through hole.
10. 10. The rotary dispensing mechanism for two-component AB glue of claim 1, wherein said rotary driving assembly further comprises a glue barrel limiting clamp plate, said glue barrel limiting clamp plate is disposed on the inner side of a glue barrel fixing sleeve, and a limiting protrusion is disposed on the top of the front side of said glue barrel limiting clamp plate.

Description

Rotary dispensing mechanism for double-component AB glue Technical Field The invention relates to the technical field of dispensing machine equipment, in particular to a rotary dispensing mechanism for double-component AB glue. Background In the field of automated dispensing production, the movement mode of the valve body assembly is one of the core factors for determining the adaptive range and the production efficiency of the dispensing process. The main motion modes of valve body components of the main flow dispensing machine in the market at present are mainly divided into two types, namely, one motion mode is a motion mode for fixing the valve body components, the motion mode is only suitable for planar dispensing, basic actions such as dotting, scribing and the like can be realized, and although single-component glue or double-component AB glue is supported for glue supply, the dispensing requirements of non-planar parts such as curved surfaces of side walls of products cannot be met, and obvious limitations exist. Secondly, the rotatable motion mode of valve body subassembly, this mode can cooperate the curved needle head to accomplish the product lateral wall point and glue on the basis of plane point and glue, but is limited by glue characteristic and mechanism design defect, only can adapt to single component glue at present. Specifically, the double-component AB glue is required to be mixed according to a certain proportion and used, the gel time after mixing is short (generally less than or equal to 5 minutes), stable thrust is provided by a screw rod glue pushing mechanism to ensure glue outlet uniformity, but the existing screw rod glue pushing mechanism does not have a glue push rod structure rotating along with a glue barrel, so that the rotary glue pushing movement mode of the double-component glue cannot be adapted. Meanwhile, the AB glue barrel, the mixing tube, the needle head, the switch valve and other consumable materials of the traditional mechanism are installed in a threaded connection or fixed mode, the replacement process is complicated, the single replacement time is more than 5 minutes, the concentricity must be debugged again after replacement, and the machine debugging cost is high. In addition, the existing rotary valve body assembly is fixed by the glue pushing structure, the speed of the push rod cannot be adjusted according to the glue proportion, double-component AB glue with different proportions (such as 1:1 to 10:1) is difficult to adapt, compatibility is poor, and application scenes of the rotary valve body assembly are further limited. Therefore, a rotating dispensing mechanism which can realize the rotating dispensing of the double-component AB glue, ensure the dispensing precision, support the quick replacement of consumable materials and has strong compatibility is needed. Disclosure of Invention The invention mainly aims to provide a rotary dispensing mechanism for double-component AB glue, and aims to solve the technical problem that in the existing dispensing machine, the adopted valve body component can rotate, is limited by glue characteristics and mechanism design defects, and can only be adapted to single-component glue. In order to achieve the aim, the rotating dispensing mechanism for the double-component AB glue provided by the invention comprises a screw rod glue pushing assembly, a rotating driving assembly and a valve body assembly; The screw rod glue pushing assembly comprises a screw rod nut seat, two glue push rods are rotatably arranged on the screw rod nut seat, and the rotary driving assembly is arranged below the screw rod glue pushing assembly; the rotary driving assembly comprises a first driving mechanism, a glue barrel fixing sleeve and a glue mixing pipe, wherein the glue barrel fixing sleeve is provided with an A glue barrel and a B glue barrel, and the A glue barrel and the B glue barrel are respectively communicated with the glue mixing pipe; The screw rod glue pushing assembly further comprises a ball screw and a mounting block, the screw rod nut seat is mounted on the ball screw, the screw rod nut seat is driven by the ball screw to move along the ball screw, the mounting block is fixed on one side of the screw rod nut seat, a push rod bearing is arranged on the mounting block, and two glue push rods are mounted on the inner ring of the push rod bearing; The output end of the first driving mechanism is connected with the glue mixing pipe, the glue mixing pipe drives the glue barrel fixing sleeve, the glue barrel A, the glue barrel B, the glue push rod and the curved needle to rotate around the straight line of the length direction of the glue mixing pipe, and the two glue push rods rotate around the center of the push rod bearing along with the rotation of the glue mixing pipe. Optionally, the screw pushing assembly further comprises a first servo motor and a first synchronous belt, the first servo motor is arranged on one side of th