CN112659461A - Injection molding system of chair armrest and method for installing gasket on injection mold of injection molding system - Google Patents

Abstract

The invention discloses an injection molding system of a chair armrest and a method for installing a gasket on an injection mold of the injection molding system, wherein the injection molding system comprises a gasket discharge device and a large manipulator, and the large manipulator grabs the gasket from the gasket discharge device and places the gasket on a fixed mold to complete a mold closing process; gasket discharge device includes first workstation and installs vibration feed arrangement, small-size manipulator and row flitch on first workstation, vibration feed arrangement is including installing the vibration dish on the workstation and installing the play material strip on the vibration dish, be equipped with two first gasket installation stations, two second gasket installation stations, two third gasket installation stations and two fourth gasket installation stations of symmetric distribution on the row flitch, once can accomplish the injection moulding of two chair handrails through this technical scheme, improved the production efficiency of chair handrail.

Description

Injection molding system of chair armrest and method for installing gasket on injection mold of injection molding system

Technical Field

The invention relates to the technical field of injection molding, in particular to an injection molding system of a chair armrest and a method for mounting a gasket on an injection mold of the injection molding system.

Background

With the continuous development of economy and the continuous progress of society, various material consumer goods are provided for the life of people so as to enrich the living standard of people, and a plastic product is one of a plurality of material consumer goods.

It is well known that the cooperation of an injection molding machine and an injection mold is one of the most common ways to manufacture plastic products. Wherein, for the plastic chair armrest which is pre-embedded with the gasket and is assembled and formed, the manufacturing process is as follows: the gasket is embedded into the movable mold or the fixed mold of the injection mold by an operator, then the movable mold and the fixed mold are closed by the injection molding machine, and finally the injection molding machine injects molten liquid into the injection mold to perform pressure maintaining and solidification, so that the gasket is embedded into the chair armrest, and the chair armrest is conveniently assembled and connected with other parts of the chair by means of the embedded gasket.

However, those skilled in the art have found that the following disadvantages exist in the process of embedding the gasket into the moving mold or the fixed mold of the injection mold by the operator during the use process:

1) the speed of manually embedding the gasket is low, and the influence on the production efficiency of the chair armrest is large;

2) and the embedded position of the gasket has errors, so that the qualification rate of chair armrest products is influenced.

Disclosure of Invention

In order to solve the problems, the invention aims to overcome the defects of the prior art and provide an injection molding system of a chair armrest and a method for installing a gasket on an injection mold of the injection molding system.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for installing a gasket on an injection mold of a chair armrest comprises a gasket discharge device and a large manipulator, wherein the large manipulator grabs the gasket from the gasket discharge device and places the gasket on a fixed mold to complete a mold closing process;

the gasket discharging device comprises a first workbench, a vibration feeding device, a small-sized mechanical arm and a discharging plate, wherein the vibration feeding device, the small-sized mechanical arm and the discharging plate are arranged on the first workbench, the vibration feeding device comprises a vibration disc arranged on the workbench and a discharging strip arranged on the vibration disc, two first gasket mounting stations, two second gasket mounting stations, two third gasket mounting stations and two fourth gasket mounting stations are symmetrically distributed on the discharging plate,

the large manipulator further comprises a first cross beam, a second cross beam, a first mounting seat, a first vertical beam and a sucker device, wherein two ends of the first cross beam face to the left and right directions respectively and are fixedly mounted at the top end of the injection molding machine, the second cross beam is mounted on the first cross beam through a left-right moving mechanism, two ends of the second cross beam face to the front and back directions respectively, the first mounting seat is mounted on the second cross beam through a front-back moving mechanism, the first vertical beam is mounted on the first mounting seat through a vertical moving mechanism, the sucker device is rotatably mounted at the bottom of the first vertical beam, and the sucker device is used for sucking a gasket on a discharging plate and placing the gasket on a fixed die and sucking an injection molded chair armrest on a movable die and placing the gasket in a finished product bin;

the method comprises the following specific steps:

the method comprises the following steps: starting a vibrating disk, and conveying the gasket to the discharging strip by the vibrating disk through vibration;

step two: the small manipulator sucks the gasket from the discharging strip and places the gasket on a first gasket mounting station, then continues to suck the gasket from the discharging strip and places the gasket on a second gasket mounting station, then continues to suck the gasket from the discharging strip and places the gasket on a third gasket mounting station, then continues to suck the gasket from the discharging strip and places the gasket on a fourth gasket mounting station, then continues to suck the gasket from the discharging strip and places the gasket on a third gasket mounting station, then continues to suck the gasket from the discharging strip and places the gasket on a second gasket mounting station, and then continues to suck the gasket from the discharging strip and places the gasket on a first gasket mounting station;

step three: the large manipulator moves from the first stop position to the second stop position, and the sucking disc device sucks the gasket on the discharge plate;

step four: and the large-scale mechanical arm moves to a third stop position, and then the gasket on the sucking disc device is placed on the fixed die.

Preferably, the chair armrest comprises a first supporting plate, a second supporting plate, a third supporting plate and an armrest plate which are integrally formed and are surrounded into a circle, the first supporting plate and the third supporting plate are respectively positioned on the left side and the right side, the armrest plate and the second supporting plate are respectively positioned on the upper side and the lower side, the end faces of the first supporting plate, the second supporting plate and the third supporting plate are respectively positioned on the front side and the rear side, the end face of the armrest plate is positioned on the upper side and the lower side, the armrest plate is an arc-shaped plate, the middle part of the armrest plate is arched upwards, the shape of the first supporting plate is matched with the lower half part of a chair backrest frame, the shape of the second supporting plate is matched with the chair seat frame, a first gasket pre-embedding hole and a second gasket pre-embedding hole are formed in the first supporting plate, and a third gasket pre-embedding hole and a fourth gasket pre;

the first gasket installation station corresponds to a first gasket pre-buried hole, the second gasket installation station corresponds to a second gasket pre-buried hole, the third gasket installation station corresponds to a third gasket pre-buried hole, the fourth gasket installation station corresponds to a fourth gasket pre-buried hole, the vibrating disc sends the gasket to the discharging strip through vibration, and the miniature manipulator sends the gasket on the discharging strip to the first gasket installation station, the second gasket installation station, the third gasket installation station and the fourth gasket installation station on the discharging plate respectively;

preferably, the miniature mechanical arm comprises a first support, a second support, a left-right moving assembly, a front-back moving assembly, a vertical moving assembly and two first gasket suckers, the first support and the second support are both of a door-shaped structure formed by two upright columns and a cross beam, the first support and the second support are distributed on the front half section and the rear half section of the first workbench, the vibrating disc is located behind the second support, the discharging strip penetrates through the second support and extends between the first support and the second support, and the discharging plate is located between the first support and the second support;

the back-and-forth movement assembly comprises a first sliding seat, the first sliding seat is slidably mounted on the first support and the second support through the back-and-forth movement assembly, the up-and-down movement assembly is mounted on the back-and-forth movement assembly, the two first gasket suckers are fixedly mounted on the up-and-down movement assembly, the two first gasket suckers respectively suck two sides of a circular hole in a gasket on the discharging strip, and then the gasket is sucked and placed on the discharging plate.

Preferably, the left-right moving assembly comprises a first motor, a first lead screw, a first sliding block, a first sliding rail, a second sliding block and a second sliding rail, the first sliding rail and the first motor are fixedly mounted on a first support, the second sliding rail is fixedly mounted on a second support, the first sliding block is in sliding fit with the first sliding rail, the second sliding block is in sliding fit with the second sliding rail, two ends of the first sliding seat are fixedly connected with the first sliding block and the second sliding block respectively, the first sliding block is sleeved on the first lead screw, and the first motor drives the first lead screw to rotate so as to drive the first sliding block to slide on the first sliding rail and further drive the first sliding seat to move left and right;

the back-and-forth movement assembly comprises a second motor, a second lead screw, a third slider and a third slide rail, the third slide rail and the second motor are fixedly arranged on the first sliding seat, the third slider is in sliding fit with the third slide rail, the third slider is sleeved on the second lead screw, the up-and-down movement assembly is fixedly arranged on the third slider, and the second motor drives the second lead screw to rotate so as to drive the third slider to slide on the third slide rail and further drive the up-and-down movement assembly to move back and forth;

the up-down moving assembly comprises a second sliding seat, a third motor, a third screw rod, a fourth slider and a fourth sliding rail, the fourth sliding rail and the third motor are fixedly mounted on the second sliding seat, the fourth slider and the fourth sliding rail are in sliding fit, the fourth slider is sleeved on the third screw rod, the first gasket sucker is fixedly mounted on the fourth slider, and the third motor drives the third screw rod to rotate so as to drive the fourth slider to slide on the fourth sliding rail and further drive the first gasket sucker to move up and down.

Preferably, the discharging strip comprises a vibrating electromagnet, a vibrating support and a conveying guide rail, the conveying guide rail is fixedly installed on the vibrating support and located above the vibrating support, the conveying guide rail comprises an input end and an output end, the input end is connected with the vibrating disc, the output end is lower than the input end, and the first gasket sucker sucks up the gasket from the output end;

the vibration electromagnet is fixedly installed on the vibration support, and transmits vibration to the conveying guide rail through the vibration support, so that the gasket on the conveying guide rail moves from the input end to the output end.

Preferably, the conveying guide rail comprises a top wall, a bottom wall, a left wall and a right wall, a gap with the same length as the top wall is arranged in the middle of the top wall, the direction of the gap is consistent with the conveying direction of the gaskets, the distance between the top wall and the bottom wall is larger than the thickness of one gasket and smaller than the thickness of 1.2 gaskets, the distance between the left wall and the right wall is larger than the diameter of one gasket and smaller than the diameter of 1.05 gaskets, and the length of the top wall is at least smaller than the length of one gasket diameter of the bottom wall.

Preferably, the first gasket mounting station, the second gasket mounting station, the third gasket mounting station and the fourth gasket mounting station comprise mounting round tables and positioning columns, the positioning columns are conical positioning columns, and the round tables and the positioning columns are coaxially distributed.

Preferably, the left-right moving mechanism comprises a fourth motor, a fourth screw rod, a fifth slider and a fifth slide rail, the fifth slide rail and the fourth motor are fixedly mounted on the first cross beam, the fifth slider is in sliding fit with the fifth slide rail, the fifth slider is sleeved on the fourth screw rod, the second cross beam is fixedly connected with the fifth slider, and the fourth motor drives the fourth screw rod to rotate so as to drive the fifth slider to slide on the fifth slide rail and further drive the second cross beam to move left and right;

the front-back moving mechanism comprises a fifth motor, a fifth screw rod, a sixth sliding block and a sixth sliding rail, the sixth sliding rail and the fifth motor are fixedly mounted on the second cross beam, the sixth sliding block is in sliding fit with the sixth sliding rail, the sixth sliding block is sleeved on the fifth screw rod, the first mounting seat is fixedly connected with the sixth sliding block, and the fifth motor drives the fifth screw rod to rotate so as to drive the sixth sliding block to slide on the sixth sliding rail and further drive the first mounting seat to move front and back;

the up-down moving mechanism comprises a sixth motor, a sixth lead screw, a seventh sliding block and a seventh sliding rail, the seventh sliding rail and the sixth motor are fixedly installed on the first installation seat, the seventh sliding block is in sliding fit with the seventh sliding rail, the seventh sliding block is sleeved on the sixth lead screw, the first vertical beam is fixedly connected with the seventh sliding block, and the sixth motor drives the sixth lead screw to rotate so as to drive the seventh sliding block to slide on the seventh sliding rail and further drive the first vertical beam to move up and down.

Preferably, the sucking disc device comprises a first mounting plate, the first mounting plate is rotatably mounted at the bottom of the first vertical beam through a first air cylinder, and a plurality of groups of second gasket sucking discs distributed in pairs are arranged on the first mounting plate.

An injection molding system for chair armrests, which adopts the method for installing the gasket on the injection mold of the chair armrests.

The invention has the beneficial effects that:

1) according to the invention, the gasket is placed on each station of the discharge plate by adopting the small-sized manipulator, and then the gasket is placed on the fixed die by using the large-sized manipulator, so that the gasket placing accuracy can be effectively ensured, and meanwhile, the gasket can be controlled to be consistent with the die assembly and injection molding time of the movable die and the fixed die by adjusting the speed of the small-sized manipulator and the speed of the large-sized manipulator, so that the production efficiency of the chair armrest is improved.

2) The injection molding of the two chair armrests can be completed at one time, and the production efficiency of the chair armrests is improved.

Drawings

FIG. 1 is a schematic view of an injection molding system for chair arm rests according to the present invention;

FIG. 2 is a schematic view of a large robot of the present invention;

FIG. 3 is a schematic view of a gasket vibratory feed of the present invention;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic view of a take-off plate of the present invention;

FIG. 6 is an enlarged schematic view at B of FIG. 5;

fig. 7 is a schematic view of the armrest of the chair according to the present invention.

Description of reference numerals: 1. an injection molding machine; 5. a small-sized manipulator; 20. a first support plate; 21. a second support plate; 22. a third support plate; 23. a handrail plate; 24. a first gasket pre-buried hole; 25. a second gasket pre-buried hole; 26. a third gasket pre-buried hole; 27. a fourth gasket pre-buried hole; 30. a first table; 31. a vibrating pan; 32. discharging the material strips; 33. a discharge plate; 330. a first gasket mounting station; 331. a second gasket mounting station; 332. a third gasket installation station; 333. a fourth gasket installation station; 40. a first cross member; 41. a second cross member; 42. a first vertical beam; 43. a suction cup device; 50. a first bracket; 51. a second bracket; 52. a first sliding seat; 53. a first slider; 54. a first slide rail; 55. a second slider; 56. a second slide rail; 57. a third slider; 58. a third slide rail; 59. a fourth slider; 320. a vibration bracket; 321. a conveying guide rail; 3210. a limiting bulge; 3211. a top wall; 3212. a bottom wall; 3213. a left portion wall; 3214. a right portion wall; 430. a first mounting plate; 431. a second mounting plate; 432. a second gasket suction cup; 433. a handrail sucker; 334. a circular truncated cone is installed; 335. and a positioning column.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The first embodiment is as follows:

the injection molding system of the chair armrest as shown in fig. 1 comprises a gasket vibration feeding device, an injection molding machine 1 and a large-scale manipulator, wherein the injection molding machine 1 is a common device on the market, and is not detailed here, generally, the injection molding machine 1 comprises a first driving mechanism, a pouring system, a movable mold and a fixed mold as shown in the figure, the movable mold and the fixed mold are fixedly installed in the injection molding machine 1, the large-scale manipulator grabs the gasket from the gasket vibration feeding device and puts the gasket on the fixed mold, the first driving mechanism pushes the movable mold to move so as to complete a mold closing process with the fixed mold, and the pouring system completes an injection molding process.

In this embodiment, the chair armrest, as shown in fig. 7, includes a first support plate 20, a second support plate 21, a third support plate 22 and an armrest plate 23 which are integrally formed and enclosed in a circle, the first support plate 20 and the third support plate 22 are respectively positioned at the left and right sides, the handle plate 23 and the second support plate 21 are respectively positioned at the upper and lower sides, the end faces of the first support plate 20, the second support plate 21 and the third support plate 22 are positioned on the front and rear sides, the end surfaces of the handrail plates 23 are positioned at the upper side and the lower side, the handrail plates 23 are arc-shaped plates, the middle parts of the handrail plates 23 are arched upwards, the first support plate 20 is shaped to match the lower half of the chair back rest, the second support plate 21 is shaped to match the chair seat frame, the first support plate 20 is provided with a first gasket pre-buried hole 24 and a second gasket pre-buried hole 25, a third gasket pre-buried hole 26 and a fourth gasket pre-buried hole 27 are formed in the second support plate 21;

it should be noted that the end surfaces of the first support plate 20, the second support plate 21, the third support plate 22 and the armrest plate 23 refer to two surfaces having the largest area;

in this embodiment, as shown in fig. 3, the gasket vibration feeding device includes a first workbench 30, a vibration feeding device installed on the first workbench 30, a mini-manipulator 5, and a discharging plate 33 as shown in fig. 5, the vibration feeding device includes a vibration disk 31 installed on the workbench and a discharging bar 32 installed on the vibration disk 31, two first gasket installation stations 330, two second gasket installation stations 331, two third gasket installation stations 332, and two fourth gasket installation stations 333 are symmetrically distributed on the discharging plate 33, wherein the first gasket installation stations 330 correspond to the first gasket pre-burying holes 24, the second gasket installation stations 331 correspond to the second gasket pre-burying holes 25, the third gasket installation stations 332 correspond to the third gasket pre-burying holes 26, and the fourth gasket installation stations 333 correspond to the fourth gasket pre-burying holes 27, the vibrating disc 31 sends the gaskets to the discharging strip 32 through vibration, and the miniature mechanical arm 5 sends the gaskets on the discharging strip 32 to a first gasket mounting station 330, a second gasket mounting station 331, a third gasket mounting station 332 and a fourth gasket mounting station 333 on the discharging plate 33 respectively;

as shown in fig. 2, the large manipulator further includes a first beam 40, a second beam 41, a first mounting seat, a first vertical beam 42 and a suction cup device 43, two ends of the first beam 40 respectively face to the left and right directions and are fixedly mounted on the top end of the injection molding machine 1, the second beam 41 is mounted on the first beam 40 through a left-right moving mechanism, two ends of the second beam 41 respectively face to the front and back directions, the first mounting seat is mounted on the second beam 41 through a front-back moving mechanism, the first vertical beam 42 is mounted on the first mounting seat through an up-down moving mechanism, the suction cup device 43 is rotatably mounted at the bottom of the first vertical beam 42, the suction cup device 43 is used for sucking the gasket on the discharging plate 33 and placing the gasket on the fixed mold and sucking the injection molded chair armrest on the movable mold and placing the gasket on the finished product bin,

the large manipulator is sequentially provided with a first stopping position, a second stopping position, a third stopping position, a fourth stopping position and a fifth stopping position; after the small-sized mechanical arm 5 respectively sends the gasket to the first gasket installation station 330, the second gasket installation station 331, the third gasket installation station 332 and the fourth gasket installation station 333 on the discharge plate 33, the large-sized mechanical arm moves from the first stop position to the second stop position, the suction disc device 43 sucks the gasket on the discharge plate 33, then the large-sized mechanical arm moves to the third stop position to place the gasket on the suction disc device 43 on the fixed mold, then the large-sized mechanical arm moves to the fourth stop position again, the suction disc device 43 sucks two injection-molded chair handrails on the movable mold, then the large-sized mechanical arm moves to the fifth stop position again to place the two chair handrails in the finished product bin, and then the large-sized mechanical arm returns to the first stop position again.

Like this, adopt small-size manipulator 5 to put the gasket to each station of flitch 33 on, then the gasket is placed on the cover half with large-scale manipulator of reuse, can effectively ensure the precision that the gasket was put, simultaneously through the speed of adjustment small-size manipulator 5 and large-scale manipulator, can be unanimous with the movable mould cover half compound die time of moulding plastics with its control, and then improved the production efficiency of chair handrail.

In addition, the injection molding system can complete injection molding of the two chair armrests at one time, and production efficiency of the chair armrests is improved.

In this embodiment, the mini-manipulator 5 includes a first support 50, a second support 51, a left-right moving assembly, a front-back moving assembly, a vertical moving assembly and two first gasket suckers, the first support 50 and the second support 51 are both a door-shaped structure composed of two vertical columns and a cross beam, the first support 50 and the second support 51 are distributed on the front and back half sections of the first workbench 30, the vibrating disk 31 is located behind the second support 51, the discharging strip 32 passes through the second support 51 and extends between the first support 50 and the second support 51, and the discharging plate 33 is located between the first support 50 and the second support 51;

the back-and-forth movement assembly comprises a first sliding seat 52, the first sliding seat 52 is slidably mounted on the first support 50 and the second support 51 through the back-and-forth movement assembly, the up-and-down movement assembly is mounted on the back-and-forth movement assembly, the two first gasket suction cups are fixedly mounted on the up-and-down movement assembly, the two first gasket suction cups respectively suck two sides of the upper circular holes of the gaskets on the discharging strip 32, and then the gaskets are sucked and placed on the discharging plate 33.

So set up, through the reasonable arrangement to first support 50, row flitch 33 and vibration dish 31, can effectively reduce the small-size manipulator 5 and arrange the stroke that the gasket will be passed on full on row flitch 33.

In this embodiment, the left-right moving assembly includes a first motor, a first lead screw, a first slider 53, a first slide rail 54, a second slider 55 and a second slide rail 56, the first slide rail 54 and the first motor are fixedly mounted on the first bracket 50, the second slide rail 56 is fixedly mounted on the second bracket 51, the first slider 53 is in sliding fit with the first slide rail 54, the second slider 55 is in sliding fit with the second slide rail 56, two ends of the first sliding seat 52 are respectively fixedly connected with the first slider 53 and the second slider 55, the first slider 53 is mounted on the first lead screw in a sleeved manner, and the first motor drives the first lead screw to rotate so as to drive the first slider 53 to slide on the first slide rail 54 and further drive the first sliding seat 52 to move left and right;

the back-and-forth movement assembly comprises a second motor, a second screw rod, a third slide block 57 and a third slide rail 58, the third slide rail 58 and the second motor are fixedly arranged on the first sliding seat 52, the third slide block 57 is in sliding fit with the third slide rail 58, the third slide block 57 is sleeved on the second screw rod, the up-and-down movement assembly is fixedly arranged on the third slide block 57, and the second motor drives the second screw rod to rotate so as to drive the third slide block 57 to slide on the third slide rail 58 and further drive the up-and-down movement assembly to move back and forth;

the up-down moving assembly comprises a second sliding seat, a third motor, a third screw rod, a fourth sliding block 59 and a fourth sliding rail, the fourth sliding rail and the third motor are fixedly installed on the second sliding seat, the fourth sliding block 59 is in sliding fit with the fourth sliding rail, the fourth sliding block 59 is sleeved on the third screw rod, the first gasket sucker is fixedly installed on the fourth sliding block 59, and the third motor drives the third screw rod to rotate so as to drive the fourth sliding block 59 to slide on the fourth sliding rail and further drive the first gasket sucker to move up and down.

In this embodiment, the discharging strip 32 includes a vibrating electromagnet, a vibrating bracket 320 and a conveying guide rail 321, the conveying guide rail 321 is fixedly installed on the vibrating bracket 320 and located above the vibrating bracket 320, the conveying guide rail 321 includes an input end and an output end, the input end is connected with the vibrating disk 31, the output end is lower than the input end, and the first gasket suction cup sucks up the gasket from the output end;

the vibrating electromagnet is fixedly mounted on the vibrating bracket 320, and transmits vibration to the conveying guide rail 321 through the vibrating bracket 320, so that the gasket on the conveying guide rail 321 moves from the input end to the output end.

Further preferably, the output end is further provided with a limiting protrusion 3210, and the limiting protrusion 3210 is used to prevent the gasket from falling off the conveying guide rail 321.

In this embodiment, as shown in fig. 4, the conveying rail 321 includes a top wall 3211, a bottom wall 3212, a left wall 3213, and a right wall 3214, a middle portion of the top wall 3211 is provided with a gap equal to the length of the top wall 3211, the gap is oriented in a conveying direction of the gasket, a distance between the top wall 3211 and the bottom wall 3212 is greater than a thickness of one gasket and less than a thickness of 1.2 gaskets, a distance between the left wall 3213 and the right wall 3214 is greater than a diameter of one gasket and less than a diameter of 1.05 gaskets, and the length of the top wall 3211 is at least less than a diameter of one gasket of the bottom wall 3212. With such an arrangement, the gasket can be moved along the conveying guide rail 321 very neatly; meanwhile, the gap is formed between the top walls 3211, so that the conveying condition of the gasket in the conveying guide rail 321 can be conveniently observed, the gasket can be prevented from vibrating to fall out of the conveying guide rail 321, and the length of the top walls 3211, which is at least smaller than that of the bottom walls 3212, of one gasket diameter is convenient for the first gasket sucker to suck the gasket from the output end of the conveying guide rail 321.

In this embodiment, the vibration support 320 includes an upper mounting plate, a lower mounting plate, a left oblique connecting plate, and a right oblique connecting plate, which are sequentially connected end to form a parallelogram structure, and the parallelogram structure is inclined toward the output end of the conveying rail 321; the lower mounting plate is mounted above the mounting seat, and the conveying guide rail 321 is mounted above the upper mounting plate;

the vibrating electromagnet is fixedly arranged on the positioning plate, and the left side and the right side of the positioning plate are respectively connected to the left oblique connecting plate and the right oblique connecting plate.

In this embodiment, as shown in fig. 6, each of the first pad mounting station 330, the second pad mounting station 331, the third pad mounting station 332, and the fourth pad mounting station 333 includes a mounting circular truncated cone 334 and a positioning pillar 335, the positioning pillar 335 is a conical positioning pillar 335, and the circular truncated cone and the positioning pillar 335 are coaxially distributed; this is done to facilitate placement of the spacers, and the tapered locating posts 335 are designed to allow some tolerance in the movement of the compact robot 5.

In this embodiment, the left-right moving mechanism includes a fourth motor, a fourth screw rod, a fifth slider and a fifth slide rail, the fifth slide rail and the fourth motor are fixedly mounted on the first cross beam 40, the fifth slider is in sliding fit with the fifth slide rail, the fifth slider is sleeved on the fourth screw rod, the second cross beam 41 is fixedly connected with the fifth slider, and the fourth motor drives the fourth screw rod to rotate so as to drive the fifth slider to slide on the fifth slide rail, and further drive the second cross beam 41 to move left and right;

the front-back moving mechanism comprises a fifth motor, a fifth screw rod, a sixth slider and a sixth slide rail, the sixth slide rail and the fifth motor are fixedly mounted on the second cross beam 41, the sixth slider is in sliding fit with the sixth slide rail, the sixth slider is sleeved on the fifth screw rod, the first mounting seat is fixedly connected with the sixth slider, and the fifth motor drives the fifth screw rod to rotate so as to drive the sixth slider to slide on the sixth slide rail and further drive the first mounting seat to move front and back;

the up-down moving mechanism comprises a sixth motor, a sixth lead screw, a seventh sliding block and a seventh sliding rail, the seventh sliding rail and the sixth motor are fixedly installed on the first installation seat, the seventh sliding block is in sliding fit with the seventh sliding rail, the seventh sliding block is sleeved on the sixth lead screw, the first vertical beam 42 is fixedly connected with the seventh sliding block, and the sixth motor drives the sixth lead screw to rotate so as to drive the seventh sliding block to slide on the seventh sliding rail and further drive the first vertical beam 42 to move up and down.

In this embodiment, the suction cup device 43 includes a first mounting plate 430 and a second mounting plate 431, the first mounting plate 430 includes an a side and a B side which are oppositely disposed, the a side of the first mounting plate 430 is rotatably mounted at the bottom of the first vertical beam 42 through a first cylinder, the second mounting plate 431 is rotatably mounted at the B side of the first mounting plate 430 through a second cylinder, a plurality of groups of second pad suction cups 432 which are distributed pairwise are disposed on an end surface of the first mounting plate 430, which is opposite to the second mounting plate 431, and a plurality of handrail suction cups 433 are disposed on an end surface of the second mounting plate 431, which is opposite to the first mounting plate 430;

when the large manipulator is at the first stop position, the second pad sucker 432 faces backwards, and the handrail sucker 433 faces forwards;

when the large manipulator is at the second stop position, the second pad sucker 432 faces downwards, and the handrail sucker 433 faces upwards;

when the large manipulator is in the third stop position, the second pad sucker 432 faces backwards, and the handrail sucker 433 faces forwards;

when the large manipulator is at the fourth stop position, the second pad sucker 432 faces backwards, and the handrail sucker 433 faces forwards;

when the large manipulator is in the fifth resting position, the second pad suction cup 432 faces rearward and the handrail suction cup 433 faces downward.

Further preferably, the second pad suction cup 432 and the handrail suction cup 433 are both straight vacuum suction cups.

In this embodiment, the fixed mold is provided with a plurality of mounting columns, and the large manipulator sleeves a plurality of gaskets captured by the sucker device 43 on the plurality of mounting columns.

The injection molding method of the chair armrest adopts the injection molding system of the chair armrest, and comprises the following specific steps:

the method comprises the following steps: starting the vibrating disk 31, and conveying the gasket to the discharging strip 32 by the vibrating disk 31 through vibration;

step two: the mini-robot 5 picks up shims from the take-off bar 32 and places them at the first shim mounting station 330, then continues to pick up shims from the take-off bar 32 and places them at the second shim mounting station 331, then continues to pick up shims from the take-off bar 32 and places them at the third shim mounting station 332, then continues to pick up shims from the take-off bar 32 and places them at the fourth shim mounting station 333, then continues to pick up shims from the take-off bar 32 and places them at the third shim mounting station 332, then continues to pick up shims from the take-off bar 32 and places them at the second shim mounting station 331, then continues to pick up shims from the take-off bar 32 and places them at the first shim mounting station 330;

step three: the large-scale mechanical arm moves from the first stop position to the second stop position, and the suction disc device 43 sucks the gasket on the discharge plate 33;

step four: the large manipulator moves to a third stop position, and then the gasket on the suction cup device 43 is placed on the fixed die;

step five: the large manipulator moves to a fourth stopping position, and the sucking disc device 43 sucks the two injection-molded chair armrests on the movable mold;

step six: the large manipulator moves to a fifth stopping position, the two chair armrests are placed in the finished product bin, and then the large manipulator returns to the first stopping position; meanwhile, the first driving mechanism pushes the movable mold to move so as to complete the mold closing process with the fixed mold, and the pouring system completes the injection molding process;

step seven: and repeating the second step to the sixth step to further finish the injection molding of the next two chair armrests.

It is worth to be noted that, in the injection molding process of the two chair armrests, the step two and the steps three to six are performed synchronously; and then reduced the shaping time of single chair handrail, improved the efficiency of moulding plastics of chair handrail.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method for installing a gasket on an injection mold of a chair armrest comprises a gasket vibration feeding device and a large manipulator, wherein the large manipulator grabs the gasket from the gasket vibration feeding device and places the gasket on a fixed mold to complete a mold closing process; the method is characterized in that:

the gasket vibration feeding device comprises a first workbench (30), a vibration feeding device, a small-sized mechanical arm (5) and a discharging plate (33), wherein the vibration feeding device, the small-sized mechanical arm (5) and the discharging plate (33) are installed on the first workbench (30), the vibration feeding device comprises a vibration disc (31) installed on the first workbench (30) and a discharging strip (32) installed on the vibration disc (31), two first gasket installation stations (330), two second gasket installation stations (331), two third gasket installation stations (332) and two fourth gasket installation stations (333) are symmetrically distributed on the discharging plate (33),

the large manipulator also comprises a first cross beam (40), a second cross beam (41), a first mounting seat, a first vertical beam (42) and a sucker device (43), the two ends of the first beam (40) respectively face to the left and right directions and are fixedly arranged on the top end of the injection molding machine (1), the second beam (41) is arranged on the first beam (40) through a left-right moving mechanism, two ends of the second beam (41) face to the front and back directions respectively, the first mounting seat is mounted on the second beam (41) through a front and back moving mechanism, the first vertical beam (42) is arranged on the first mounting seat through an up-down moving mechanism, the sucker device (43) is rotatably arranged at the bottom of the first vertical beam (42), the sucking disc device (43) is used for sucking the gasket on the discharging plate (33) and placing the gasket on the fixed die and sucking the injection molded chair handrail on the movable die and placing the chair handrail in the finished product bin;

the method comprises the following specific steps:

the method comprises the following steps: starting the vibrating disk (31), and conveying the gasket to the discharging strip (32) by the vibrating disk (31) through vibration;

step two: the mini-manipulator (5) picks up the gasket from the discharge strip (32) and places it in a first gasket mounting station (330), then continuously sucking the gasket from the discharging strip (32) and placing the gasket at a second gasket mounting station (331), then continuing to draw the shim from the take-off bar (32) and place it at a third shim mounting station (332), then continues to pick up the shim from the take-off strip (32) and place it in a fourth shim mounting station (333), then continues to pick up the shim from the take-off strip (32) and place it in a fourth shim mounting station (333), then continuing to draw the shim from the take-off bar (32) and place it at a third shim mounting station (332), then continuously sucking the gasket from the discharging strip (32) and placing the gasket at a second gasket mounting station (331), then continuing to draw the gasket from the discharge bar (32) and placing it in a first gasket mounting station (330);

step three: the large manipulator moves from the first stop position to the second stop position, and the suction disc device (43) sucks the gasket on the discharge plate (33);

step four: the large robot moves to a third stop position and then places the pad on the suction cup device (43) on the stationary mold.

2. The method of claim 1, wherein the chair armrest comprises a first support plate (20), a second support plate (21), a third support plate (22), and a handrail plate (23) integrally formed and surrounding into a circle, the first support plate (20) and the third support plate (22) are respectively located at left and right sides, the handrail plate (23) and the second support plate (21) are respectively located at upper and lower sides, end surfaces of the first support plate (20), the second support plate (21), and the third support plate (22) are respectively located at front and rear sides, end surfaces of the handrail plate (23) are located at upper and lower sides, the handrail plate (23) is an arc-shaped plate, a middle portion of the handrail plate (23) is upwardly arched, a shape of the first support plate (20) matches a lower half portion of a chair backrest frame, a shape of the second support plate (21) matches a chair seat frame, a first gasket pre-buried hole (24) and a second gasket pre-buried hole (25) are formed in the first supporting plate (20), and a third gasket pre-buried hole (26) and a fourth gasket pre-buried hole (27) are formed in the second supporting plate (21);

the gasket material discharging device is characterized in that a first gasket mounting station (330) corresponds to a first gasket pre-buried hole (24), a second gasket mounting station (331) corresponds to a second gasket pre-buried hole (25), a third gasket mounting station (332) corresponds to a third gasket pre-buried hole (26), a fourth gasket mounting station (333) corresponds to a fourth gasket pre-buried hole (27), the vibrating disc (31) sends gaskets to the discharging strip (32) through vibration, and the small manipulator (5) respectively sends the gaskets on the discharging strip (32) to the first gasket mounting station (330), the second gasket mounting station (331), the third gasket mounting station (332) and the fourth gasket mounting station (333) on the discharging plate (33).

3. The method for assembling the gasket on the injection mold of the chair armrest is characterized in that the miniature mechanical arm (5) comprises a first bracket (50), a second bracket (51), a left-right moving assembly, a front-back moving assembly, a vertical moving assembly and two first gasket suction cups, the first bracket (50) and the second bracket (51) are both of a door-shaped structure consisting of two upright posts and a cross beam, the first bracket (50) and the second bracket (51) are distributed on the front half section and the rear half section of the first workbench (30), the vibrating plate (31) is positioned behind the second bracket (51), the discharging strip (32) penetrates through the second bracket (51) and extends between the first bracket (50) and the second bracket (51), and the discharging plate (33) is positioned between the first bracket (50) and the second bracket (51);

the back-and-forth movement assembly comprises a first sliding seat (52), the first sliding seat (52) is slidably mounted on a first support (50) and a second support (51) through the back-and-forth movement assembly, the up-and-down movement assembly is mounted on the back-and-forth movement assembly, two first gasket suckers are fixedly mounted on the up-and-down movement assembly, the two first gasket suckers respectively suck two sides of a circular hole in a gasket on the discharging strip (32), and then the gasket is sucked and placed on the discharging plate (33).

4. The method for assembling the gasket on the injection mold of the chair armrest as claimed in claim 3, wherein the left-right moving assembly comprises a first motor, a first lead screw, a first sliding block (53), a first sliding rail (54), a second sliding block (55) and a second sliding rail (56), the first sliding rail (54) and the first motor are fixedly installed on the first bracket (50), the second sliding rail (56) is fixedly installed on the second bracket (51), the first sliding block (53) and the first sliding rail (54) are slidably engaged, the second sliding block (55) and the second sliding rail (56) are slidably engaged, two ends of the first sliding seat (52) are fixedly connected with the first sliding block (53) and the second sliding block (55), the first sliding block (53) is sleeved on the first lead screw, the first motor drives the first lead screw to rotate so as to drive the first sliding block (53) to slide on the first sliding rail (54), thereby driving the first sliding seat (52) to move left and right;

the back-and-forth movement assembly comprises a second motor, a second screw rod, a third sliding block (57) and a third sliding rail (58), the third sliding rail (58) and the second motor are fixedly mounted on the first sliding seat (52), the third sliding block (57) is in sliding fit with the third sliding rail (58), the third sliding block (57) is sleeved on the second screw rod, the up-and-down movement assembly is fixedly mounted on the third sliding block (57), and the second motor drives the second screw rod to rotate so as to drive the third sliding block (57) to slide on the third sliding rail (58) and further drive the up-and-down movement assembly to move back and forth;

the up-down moving assembly comprises a second sliding seat, a third motor, a third screw rod, a fourth sliding block (59) and a fourth sliding rail, the fourth sliding rail and the third motor are fixedly installed on the second sliding seat, the fourth sliding block (59) is in sliding fit with the fourth sliding rail, the fourth sliding block (59) is sleeved and installed on the third screw rod, the first gasket sucker is fixedly installed on the fourth sliding block (59), and the third motor drives the third screw rod to rotate so as to drive the fourth sliding block (59) to slide on the fourth sliding rail, so that the first gasket sucker is driven to move up and down.

5. The method for assembling the gasket on the injection mold of the armrest of the chair as claimed in claim 1, wherein the discharging bar (32) comprises a vibrating electromagnet, a vibrating bracket (320) and a conveying guide rail (321), the conveying guide rail (321) is fixedly installed on the vibrating bracket (320) and positioned above the vibrating bracket (320), the conveying guide rail (321) comprises an input end and an output end, the input end is connected with the vibrating disk (31), the output end is lower than the input end, and the first gasket suction cup sucks up the gasket from the output end;

the vibrating electromagnet is fixedly arranged on the vibrating support (320), and transmits vibration to the conveying guide rail (321) through the vibrating support (320), so that the gasket on the conveying guide rail (321) moves from the input end to the output end.

6. The method of claim 4, wherein the conveying rail (321) comprises a top wall (3211), a bottom wall (3212), a left wall (3213) and a right wall (3214), the top wall (3211) has a middle portion with a gap of equal length as the top wall (3211), the gap is oriented in the conveying direction of the gasket, the distance between the top wall (3211) and the bottom wall (3212) is greater than the thickness of one gasket and less than the thickness of 1.2 gaskets, the distance between the left wall (3213) and the right wall (3214) is greater than the diameter of one gasket and less than the diameter of 1.05 gaskets, and the length of the top wall (3211) is at least less than the length of the bottom wall (3212) of one gasket diameter.

7. The method for assembling the gasket on the injection mold of the chair armrest as recited in claim 1, wherein the first gasket mounting station (330), the second gasket mounting station (331), the third gasket mounting station (332) and the fourth gasket mounting station (333) each comprise a mounting circular truncated cone (334) and a positioning column (335), the positioning columns (335) are conical positioning columns (335), and the circular truncated cone and the positioning columns (335) are coaxially distributed.

8. The method for installing the gasket on the injection mold of the chair armrest as claimed in claim 1, wherein the left-right moving mechanism comprises a fourth motor, a fourth screw rod, a fifth slider and a fifth slide rail, the fifth slide rail and the fourth motor are fixedly installed on the first cross beam (40), the fifth slider and the fifth slide rail are in sliding fit, the fifth slider is installed on the fourth screw rod in a sleeved mode, the second cross beam (41) is fixedly connected with the fifth slider, and the fourth motor drives the fourth screw rod to rotate so as to drive the fifth slider to slide on the fifth slide rail and further drive the second cross beam (41) to move left and right;

the front-back moving mechanism comprises a fifth motor, a fifth screw rod, a sixth sliding block and a sixth sliding rail, the sixth sliding rail and the fifth motor are fixedly mounted on a second cross beam (41), the sixth sliding block is in sliding fit with the sixth sliding rail, the sixth sliding block is sleeved on the fifth screw rod, the first mounting seat is fixedly connected with the sixth sliding block, and the fifth motor drives the fifth screw rod to rotate so as to drive the sixth sliding block to slide on the sixth sliding rail and further drive the first mounting seat to move front and back;

the up-down moving mechanism comprises a sixth motor, a sixth screw rod, a seventh sliding block and a seventh sliding rail, the seventh sliding rail and the sixth motor are fixedly installed on the first installation seat, the seventh sliding block is in sliding fit with the seventh sliding rail, the seventh sliding block is sleeved on the sixth screw rod, the first vertical beam (42) is fixedly connected with the seventh sliding block, and the sixth motor drives the sixth screw rod to rotate so as to drive the seventh sliding block to slide on the seventh sliding rail and further drive the first vertical beam (42) to move up and down.

9. A method of assembling spacers on injection molds for chair armrests according to claim 1, wherein the suction cup means (43) comprises a first mounting plate (430), the first mounting plate (430) is rotatably mounted on the bottom of the first vertical beam (42) by a first cylinder, and a plurality of sets of second spacer suction cups (432) are provided on the first mounting plate (430) in a two-by-two arrangement.

10. An injection molding system for chair armrests, characterized in that a method for shimming an injection mold for chair armrests according to any one of claims 1 to 9 is used.

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