CN115972489A - Rectangular square injection mechanism for four-color injection molding machine - Google Patents

Abstract

The invention discloses a rectangular square injection mechanism for a four-color injection molding machine, which comprises an injection molding machine frame, an injection molding machine fixed template arranged on one side of the injection molding machine frame, and an injection mechanism which is arranged on the injection molding machine frame and can move close to or away from the injection molding machine fixed template along the injection molding machine frame in a translation manner; the injection mechanism comprises a first injection unit and a second injection unit which are arranged on the rack of the injection molding machine in parallel, and a third injection unit and a fourth injection unit which are arranged above the first injection unit and the second injection unit oppositely; the third injection unit is arranged right above the first injection unit, and the fourth injection unit is arranged right above the second injection unit. The four groups of ejection units are distributed in a square mode, so that the same plane can meet the requirements of four colors, and the layout ensures that the space layout is more reasonable and the occupied space is less; when in use, the plastic products can be randomly combined and injected according to different requirements, and four groups of plastic products can be completely injected, so that the colors or the materials of the molded plastic products are more diversified.

Description

Rectangular square injection mechanism for four-color injection molding machine

Technical Field

The invention relates to the technical field of injection molding machines, in particular to a rectangular square injection mechanism for a four-color injection molding machine.

Background

In the same type of injection molding machine on the market, at most two injection units can be generally placed on one surface, and if four-color injection is required, a side injection unit and a top injection unit are required to be added. The occupied site and space of the equipment can be greatly increased, and the design difficulty of the die can be greatly increased.

Disclosure of Invention

Technical problem to be solved

The invention provides a rectangular square injection mechanism for a four-color injection molding machine, four groups of injection units are distributed in a square mode, the limitation of the arrangement of the injection units of the traditional injection molding machine is broken, the same plane can meet the requirement of four colors, the color or the material of a plastic product is diversified, the field space can be saved, and the development of a mold is more convenient; the production efficiency is improved, the color or material collocation of the plastic products is richer, and more special requirements are met while the field space is saved.

(II) technical scheme

The invention solves the technical problem by adopting a scheme that the rectangular square injection mechanism for the four-color injection molding machine comprises an injection molding machine rack, an injection molding machine fixed template arranged on one side of the injection molding machine rack, and an injection mechanism which is arranged on the injection molding machine rack and can move to approach or move away along the injection molding machine rack relative to the injection molding machine fixed template in a translation manner; the injection mechanism comprises a first injection unit, a second injection unit, a third injection unit and a fourth injection unit, wherein the first injection unit and the second injection unit are arranged on the rack of the injection molding machine in parallel, and the third injection unit and the fourth injection unit are arranged above the first injection unit and the second injection unit in an opposite mode; the third injection unit is arranged right above the first injection unit, and the fourth injection unit is arranged right above the second injection unit.

By adopting the scheme, the four groups of ejection units are in a square distribution form, so that the same plane can meet the requirements of four colors, the layout ensures that the space layout is more reasonable, and the occupied space is less; when the injection molding machine is used, the injection molding machine can be used for injection in any combination according to different requirements, and four groups of injection molding machines can also be used for injection, so that the colors or the materials of the molded plastic products are more diversified.

Furthermore, a first linear slide rail and a second linear slide rail which are arranged in parallel are arranged on the injection molding machine frame, wherein the first ejection unit is matched on the first linear slide rail through a first slide block piece, and the second ejection unit is matched on the second linear slide rail through a second slide block piece.

Further, the first linear sliding rail comprises two first sliding ways which are arranged in parallel, correspondingly, the first sliding block piece comprises two first sliding blocks which are respectively matched on the two first sliding ways, and a first connecting block which connects the two first sliding blocks into a whole; the second linear sliding rail comprises two second sliding ways which are arranged in parallel, correspondingly, the second sliding block piece comprises two second sliding blocks which are respectively matched on the two second sliding ways, and a second connecting block which connects the two second sliding blocks into a whole.

Furthermore, the first injection unit comprises a first injection plastic cylinder and a first injection unit seat covering part of the first injection plastic cylinder, and the first injection unit seat is detachably mounted on the first sliding block piece through a screw; the second injection unit comprises a second injection plastic barrel and a second injection unit seat wrapping part of the outside of the second injection plastic barrel, and the second injection unit seat is detachably mounted on the second sliding block piece through a screw.

Preferably, the first injection unit seat is provided with two mounting seats along the length direction of the first injection plastic cylinder, and a first sliding block piece is connected below each mounting seat, so that the stability of the first injection unit during sliding is improved; the second injection unit seat is provided with two mounting seats along the length direction of the second injection plastic cylinder, and a second sliding block piece is connected below each mounting seat, so that the stability of the second injection unit during sliding is improved.

By adopting the scheme, the first injection unit and the second injection unit adopt a linear slide rail mode to realize the advance and retreat of the two groups of injection units during operation, the advance and retreat precision of the base is improved, and the problem of glue leakage caused by the fact that the injection nozzle and the glue inlet of the die cannot be aligned is also avoided.

Furthermore, an injection seat support rod is arranged above the third injection unit and the fourth injection unit of the injection molding machine frame, one end of the injection seat support rod is fixed on the injection molding machine fixed template through a front injection seat support rod lower cushion block, the other end of the injection seat support rod is fixed on the injection molding machine frame through a rear injection seat support rod lower cushion block, and the front injection seat support rod lower cushion block is fixed on the injection molding machine fixed template through a positioning pin; the lower end of the ejection seat support rod is provided with a third linear slide rail and a fourth linear slide rail which are arranged in parallel, the third ejection unit is matched on the third linear slide rail through a third sliding block piece, and the fourth ejection unit is matched on the fourth linear slide rail through a fourth sliding block piece.

Further, the third linear sliding rail comprises two third sliding ways arranged in parallel, and correspondingly, the third sliding block piece comprises two third sliding blocks respectively matched with the two third sliding ways and a third connecting block for connecting the two third sliding blocks into a whole; the fourth linear sliding rail comprises two fourth sliding ways which are arranged in parallel, correspondingly, the fourth sliding block piece comprises two fourth sliding blocks which are respectively matched on the two fourth sliding ways, and a fourth connecting block which is used for connecting the two fourth sliding blocks into a whole.

Furthermore, the third injection unit comprises a third injection plastic cylinder and a third injection unit seat coated outside part of the third injection plastic cylinder, and the third injection unit seat is detachably mounted on the third sliding block piece through a screw; the fourth injection unit comprises a fourth injection plastic cylinder and a fourth injection unit seat wrapping part of the outside of the fourth injection plastic cylinder, and the fourth injection unit seat is detachably mounted on the fourth sliding block piece through a screw.

Preferably, the third injection unit seat is provided with two mounting seats along the length direction of the third plastic injection cylinder, and a third sliding block piece is connected below each mounting seat, so that the stability of the third injection unit during sliding is improved; the fourth injection unit seat is provided with two mounting seats along the length direction of the fourth injection plastic cylinder, and a fourth sliding block piece is connected below each mounting seat, so that the stability of the fourth injection unit during sliding is improved.

By adopting the scheme, the third injection unit and the fourth injection unit adopt a linear slide rail mode to realize the advance and retreat of the two injection units during operation, the advance and retreat precision of the base is improved, and the problem of glue leakage caused by the fact that the injection nozzle and the glue inlet of the die cannot be aligned is also avoided.

Further, a first resistance ruler for adjusting the distance between the first injection unit and the fixed die plate of the injection molding machine and a second resistance ruler for adjusting the distance between the second injection unit and the fixed die plate of the injection molding machine are arranged on the rack of the injection molding machine; and the injection seat support rod is provided with a third resistance ruler for adjusting the distance between the third injection unit and the injection molding machine fixed template and a fourth resistance ruler for adjusting the distance between the fourth injection unit and the injection molding machine fixed template.

Preferably, the first resistance ruler is arranged between the two first slide ways and is positioned on one side of the first injection unit away from the fixed die plate of the injection molding machine, and correspondingly, the first injection unit is positioned on the first connecting block and is provided with a first sheet metal part connected with the first resistance ruler, wherein the first resistance ruler is provided with a sliding block capable of sliding, the sliding block is provided with a convex column, and the first sheet metal part is provided with a clamping groove matched and clamped with the convex column so as to realize the constant connection of the first sheet metal part and the sliding block on the first resistance ruler; the second resistance ruler is arranged between the two second slide ways and is positioned on one side of the second injection unit away from the fixed template of the injection molding machine, correspondingly, the second injection unit is positioned on the second connecting block and is provided with a second sheet metal part connected with the second resistance ruler, wherein the second resistance ruler is provided with a slidable sliding block, the sliding block is provided with a convex column, and the second sheet metal part is provided with a clamping groove matched and clamped with the convex column so as to realize the constant connection of the second sheet metal part and the sliding block on the second resistance ruler; the third resistance ruler is arranged on the side surface of the ejection seat support rod, correspondingly, a third sheet metal part connected with the third resistance ruler is arranged on the third ejection unit and positioned on the outer side of the third connecting block, a slidable sliding block is arranged on the third resistance ruler, a convex column is arranged on the sliding block, and a clamping groove matched and clamped with the convex column is formed in the third sheet metal part, so that the third sheet metal part is always connected with the sliding block on the third resistance ruler; the fourth resistance ruler is arranged on the side surface of the ejection seat support rod, correspondingly, a fourth sheet metal part connected with the fourth resistance ruler is arranged on the fourth ejection unit and positioned on the outer side of the fourth connecting block, a slidable sliding block is arranged on the fourth resistance ruler, a convex column is arranged on the sliding block, and a clamping groove matched and clamped with the convex column is formed in the fourth sheet metal part, so that the fourth sheet metal part and the sliding block on the fourth resistance ruler are always connected; more preferably, the four-color injection molding machine is provided with a controller for receiving data feedback of the distances between the first resistor scale, the second resistor scale, the third resistor scale and the fourth resistor scale, wherein the data feedback is detected by the first ejection unit, the second ejection unit, the third ejection unit and the fourth ejection unit, and the fixed mold plate of the injection molding machine, so that the distances between the four ejection units and the fixed mold plate of the injection molding machine are adjusted, the requirements of different injection molding processes are met, the injection molding precision is improved, and the injection molding effect is better.

When the injection molding machine is used, in the sliding process of the first injection unit, the first sheet metal part of the first injection unit can drive the sliding block of the first resistance ruler to slide synchronously, and the first resistance ruler can detect the position of the first injection unit relative to the fixed mold plate of the injection molding machine and feed back the position to the controller; in the sliding process of the second injection unit, a second sheet metal part of the second injection unit can drive a sliding block of a second resistance ruler to slide synchronously, and the second resistance ruler can detect the position of the second injection unit relative to a fixed template of the injection molding machine and feed back the position to the controller; in the sliding process of the third injection unit, a third sheet metal part of the third injection unit can drive a sliding block of a third resistance ruler to slide synchronously, and the third resistance ruler can detect the position of the third injection unit relative to a fixed template of the injection molding machine and feed back the position to the controller; in the sliding process of the fourth injection unit, the fourth sheet metal part of the fourth injection unit can drive the sliding block of the fourth resistance ruler to slide synchronously, and the fourth resistance ruler can detect that the position of the fourth injection unit relative to the injection molding machine fixed die plate can be fed back to the controller.

The injection molding machine further comprises a first injection unit seat advancing and retreating oil cylinder for driving the first injection unit to do reciprocating translational motion relative to the injection molding machine fixed template, a second injection unit seat advancing and retreating oil cylinder for driving the second injection unit to do reciprocating translational motion relative to the injection molding machine fixed template, a third injection unit seat advancing and retreating oil cylinder for driving the third injection unit to do reciprocating translational motion relative to the injection molding machine fixed template, and a fourth injection unit seat advancing and retreating oil cylinder for driving the fourth injection unit to do reciprocating translational motion relative to the injection molding machine fixed template; one end of the first injection unit seat advancing and retreating oil cylinder is connected to the fixed template of the injection molding machine, and the other end of the first injection unit seat advancing and retreating oil cylinder is connected to the first injection unit; one end of the second injection unit seat driving and reversing oil cylinder is connected to the fixed template of the injection molding machine, and the other end of the second injection unit seat driving and reversing oil cylinder is connected to the second injection unit; one end of the third injection unit seat driving and reversing oil cylinder is connected to the injection molding machine fixed template, and the other end of the third injection unit seat driving and reversing oil cylinder is connected to the third injection unit; one end of the fourth injection unit seat advancing and retreating oil cylinder is connected to the injection molding machine fixed template, and the other end of the fourth injection unit seat advancing and retreating oil cylinder is connected to the fourth injection unit.

By adopting the scheme, the four injection units can be driven to synchronously advance and retreat by the four injection unit seat advancing and retreating oil cylinders, and the advancing and retreating process is more stable.

Further, the first ejection unit comprises a first ejection nozzle, the second ejection unit comprises a second ejection nozzle, the third ejection unit comprises a third ejection nozzle, and the fourth ejection unit comprises a fourth ejection nozzle; the injection molding machine fixed template comprises a first glue inlet for the first ejection nozzle to extend into, a second glue inlet for the second ejection nozzle to extend into, a third glue inlet for the third ejection nozzle to extend into, and a fourth glue inlet for the fourth ejection nozzle to extend into.

The injection molding method of the four-color injection molding machine comprises the following steps:

s1, respectively adding four hot-melt plastics with different colors into a first injection unit, a second injection unit, a third injection unit and a fourth injection unit;

s2, simultaneously starting a first injection unit seat advancing and retreating oil cylinder, a second injection unit seat advancing and retreating oil cylinder, a third injection unit seat advancing and retreating oil cylinder and a fourth injection unit seat advancing and retreating oil cylinder to respectively drive a first injection unit to slide towards a fixed template of the injection molding machine along a first linear slide rail, a second injection unit along a second linear slide rail, a third injection unit along a third linear slide rail and a fourth injection unit along a fourth linear slide rail; after the first injection nozzle enters the first glue inlet, the second injection nozzle enters the second glue inlet, the third injection nozzle enters the third glue inlet, and the fourth injection nozzle enters the fourth glue inlet, the first injection unit base advancing and retreating oil cylinder, the second injection unit base advancing and retreating oil cylinder, the third injection unit base advancing and retreating oil cylinder and the fourth injection unit base advancing and retreating oil cylinder stop;

s3, synchronously injecting hot-melt plastics into the injection molding module by the first injection unit, the second injection unit, the third injection unit and the fourth injection unit, and stopping injecting the glue by the first injection unit, the second injection unit, the third injection unit and the fourth injection unit after the injection molding module is filled with the hot-melt plastics;

s4, forming the hot-melt plastic in an injection mold set;

s4, separating a movable injection molding machine template of the injection molding module from a fixed injection molding machine template;

and S5, taking out the molded plastic finished product to finish one-step injection molding.

Preferably, the four-color injection molding machine of the invention can also be applied to a four-station injection molding process, the mold has four mold cavities, and the turntable can inject raw materials with different colors or materials by rotating 90 degrees each time.

(III) advantageous effects

Compared with the prior art, the rectangular square injection mechanism for the four-color injection molding machine is designed, the four groups of injection units are distributed in a square manner, the limitation of arrangement of the injection units of the traditional injection molding machine is broken, the same plane can meet the requirements of four colors, the color or material of a plastic product is diversified, the space of a field can be saved, and the development of a mold is more convenient; the production efficiency is improved, the color or material collocation of the plastic product is richer, and more special requirements are met while the field space is saved; when the injection molding machine is used, the injection molding machine can be used for injection in any combination according to different requirements, and four groups of injection molding machines can also be used for injection, so that the colors or the materials of the molded plastic products are more diversified.

Drawings

FIG. 1 is a schematic view of a rectangular square injection mechanism for a four-color injection molding machine according to the present embodiment;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is an enlarged view of the point B in FIG. 1;

FIG. 4 is an enlarged view of FIG. 1 at C;

FIG. 5 is another schematic perspective view of the rectangular square injection mechanism for the four-color injection molding machine according to the present embodiment;

FIG. 6 is an enlarged view of FIG. 5 at D;

FIG. 7 is a cross-sectional view taken at I-I of FIG. 5;

FIG. 8 is an enlarged view of E in FIG. 7;

FIG. 9 is an enlarged view of FIG. 7 at F;

FIG. 10 is an enlarged view of FIG. 7 at G;

fig. 11 is an enlarged view at H in fig. 7.

Description of reference numerals: 1. a frame of an injection molding machine; 11. a first linear slide rail; 111. a first slideway; 12. a second linear slide rail; 121. a second slideway; 13. a first resistance ruler; 14. a second resistance ruler; 2. fixing a template by an injection molding machine; 21. a first glue inlet; 22. a second glue inlet; 23. a third glue inlet; 3. a first injection unit; 31. a first slider member; 311. a first slider; 312. a first connection block; 32. a first plastic injection cylinder; 33. a first injection unit holder; 34. a first injection nozzle; 35. a first sheet metal part; 4. a second injection unit; 41. a second slider member; 411. a second slider; 412. a second connecting block; 42. a second plastic injection cylinder; 43. a second injection unit holder; 44. a second injection nozzle; 45. a second sheet metal part; 5. a third injection unit; 51. a third slider member; 511. a third slider; 512. a third connecting block; 52. thirdly, plastic cylinder injection; 53. a third injection unit holder; 54. a third injection nozzle; 55. a third sheet metal part; 6. a fourth injection unit; 61. a fourth slider member; 611. a fourth slider; 612. a fourth connecting block; 62. fourthly, plastic cylinder injection; 63. a fourth injection unit mount; 64. a fourth injection nozzle; 65. a fourth sheet metal part; 7. an ejection mount support rod; 71. a lower cushion block of a front injection seat support rod; 72. then ejecting a lower cushion block of the seat strut; 73. a third linear slide rail; 731. a third slideway; 74. a fourth linear slide rail; 741. a fourth slideway; 75. a third resistance ruler; 76. a fourth resistance ruler; 101. a first injection unit base advancing and retreating oil cylinder; 102. a second injection unit base advancing and retreating oil cylinder; 103. the third ejection unit seat advances and retreats the oil cylinder; 104. the fourth injection unit base advances and retreats the oil cylinder.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.

In this embodiment:

as shown in fig. 1 to 11, the rectangular square injection mechanism for the four-color injection molding machine of the present embodiment includes an injection molding machine frame 1, an injection molding machine fixed mold plate 2 disposed on one side of the injection molding machine frame 1, and an injection mechanism disposed on the injection molding machine frame 1 and capable of performing translational approaching or departing movement along the injection molding machine frame 1 relative to the injection molding machine fixed mold plate 2; the injection mechanism comprises a first injection unit 3, a second injection unit 4, a third injection unit 5 and a fourth injection unit 6, wherein the first injection unit 3 and the second injection unit 4 are arranged on the injection machine frame 1 in parallel, and the third injection unit 5 and the fourth injection unit 6 are arranged above the first injection unit 3 and the second injection unit 4 in an opposite mode; the third injection unit 5 is disposed right above the first injection unit 3, and the fourth injection unit 6 is disposed right above the second injection unit 4. By adopting the scheme, the four groups of ejection units are in a square distribution form, so that the same plane can meet the requirements of four colors, the layout ensures that the space layout is more reasonable, and the occupied space is less; when the injection molding machine is used, the injection molding machine can be used for injection in any combination according to different requirements, and four groups of injection molding machines can also be used for injection, so that the colors or the materials of the molded plastic products are more diversified.

Further, a first linear slide rail 11 and a second linear slide rail 12 which are arranged in parallel are arranged on the injection molding machine frame 1, wherein the first injection unit 3 is matched on the first linear slide rail 11 through a first slide block piece 31, and the second injection unit 4 is matched on the second linear slide rail 12 through a second slide block piece 41. Further, the first linear sliding rail 11 includes two first sliding ways 111 arranged in parallel, and correspondingly, the first sliding block piece 31 includes two first sliding blocks 311 respectively fitted on the two first sliding ways 111, and a first connecting block 312 integrally connecting the two first sliding blocks 311; the second linear sliding rail 12 includes two second sliding ways 121 arranged in parallel, and correspondingly, the second sliding block member 41 includes two second sliding blocks 411 respectively fitted on the two second sliding ways 121, and a second connecting block 412 connecting the two second sliding blocks 411 into a whole. Further, the first injection unit 3 includes a first injection plastic cylinder 32 and a first injection unit seat 33 covering a part of the first injection plastic cylinder 32, and the first injection unit seat is detachably mounted on the first slider 31 through a screw; the second injection unit 4 comprises a second injection plastic cylinder 42 and a second injection unit seat 43 covering part of the second injection plastic cylinder 42, and the second injection unit seat is detachably mounted on the second sliding block piece 41 through screws. Preferably, the first injection unit seat 33 is provided with two mounting seats along the length direction of the first plastic injection cylinder 32, and a first sliding block piece 31 is connected below each mounting seat, so that the stability of the first injection unit 3 during sliding is improved; the second injection unit seat 43 is provided with two mounting seats along the length direction of the second injection plastic cylinder 42, and a second sliding block piece 41 is connected below each mounting seat, so that the stability of the second injection unit 4 during sliding is improved. By adopting the scheme, the first injection unit 3 and the second injection unit 4 adopt a linear slide rail mode to realize the advance and retreat of the two groups of injection units during operation, the advance and retreat precision of the base is improved, and the problem of glue leakage caused by the fact that the injection nozzle and the glue inlet of the mould cannot be aligned is also avoided.

Further, an injection seat support rod 7 is arranged above the third injection unit 5 and the fourth injection unit 6 of the injection molding machine frame 1, one end of the injection seat support rod 7 is fixed on the injection molding machine fixed die plate 2 through a front injection seat support rod lower cushion block 71, the other end of the injection seat support rod 7 is fixed on the injection molding machine frame 1 through a rear injection seat support rod lower cushion block 72, and the front injection seat support rod lower cushion block 71 is fixed on the injection molding machine fixed die plate 2 through a positioning pin; wherein the lower end of the shooting pot supporting rod 7 is provided with a third linear slide rail 73 and a fourth linear slide rail 74 which are arranged in parallel, the third shooting unit 5 is matched on the third linear slide rail 73 through a third slide block piece 51, and the fourth shooting unit 6 is matched on the fourth linear slide rail 74 through a fourth slide block piece 61. Further, the third linear sliding rail 73 comprises two third sliding ways 731 arranged in parallel, and correspondingly, the third sliding block piece 51 comprises two third sliding blocks 511 respectively fitted on the two third sliding ways 731, and a third connecting block 512 connecting the two third sliding blocks 511 into a whole; the fourth linear sliding rail 74 includes two fourth sliding ways 741 arranged in parallel, and correspondingly, the fourth sliding block 61 includes two fourth sliding blocks 611 respectively fitted on the two fourth sliding ways 741, and a fourth connecting block 612 connecting the two fourth sliding blocks 611 into a whole. Further, the third injection unit 5 includes a third plastic injection cylinder 52 and a third injection unit seat 53 covering a part of the third plastic injection cylinder 52, and the third injection unit seat is detachably mounted on the third sliding block 51 by screws; the fourth injection unit 6 comprises a fourth injection plastic cylinder 62 and a fourth injection unit seat 63 covering part of the fourth injection plastic cylinder 62, and the fourth injection unit seat is detachably mounted on the fourth sliding block 61 through screws. Preferably, the third injection unit seat 53 is provided with two mounting seats along the length direction of the third plastic injection cylinder 52, and a third sliding block piece 51 is connected below each mounting seat, so that the stability of the third injection unit 5 during sliding is improved; the fourth injection unit seat 63 is provided with two mounting seats along the length direction of the fourth plastic injection cylinder 62, and a fourth sliding block piece 61 is connected below each mounting seat, so that the stability of the fourth injection unit 6 during sliding is improved. By adopting the scheme, the third injection unit 5 and the fourth injection unit 6 adopt a linear slide rail form to realize the advance and retreat of the two injection units during operation, the advance and retreat precision of the seat is improved, and the problem of glue leakage caused by the fact that the injection nozzle and the glue inlet of the mold cannot be aligned is also avoided.

Further, a first resistance ruler 13 for adjusting the distance between the first injection unit 3 and the injection molding machine fixed die plate 2 and a second resistance ruler 14 for adjusting the distance between the second injection unit 4 and the injection molding machine fixed die plate 2 are arranged on the injection molding machine frame 1; the injection seat support rod 7 is provided with a third resistance ruler 75 for adjusting the distance between the third injection unit 5 and the injection molding machine fixed die plate 2, and a fourth resistance ruler 76 for adjusting the distance between the fourth injection unit 6 and the injection molding machine fixed die plate 2. Preferably, the first resistance ruler 13 is arranged between the two first slide ways 111 and located on one side of the first injection unit 3 away from the injection molding machine fixed mold plate 2, and correspondingly, the first injection unit 3 is located on the first connecting block 312 and is provided with a first sheet metal part 35 connected with the first resistance ruler 13, wherein the first resistance ruler 13 is provided with a slidable sliding block, the sliding block is provided with a convex column, and the first sheet metal part 35 is provided with a clamping groove clamped with the convex column in a matching manner, so that the first sheet metal part 35 is always connected with the sliding block on the first resistance ruler 13; the second resistance ruler 14 is arranged between the two second slide ways 121 and is located on one side of the second injection unit 4 away from the injection molding machine fixed mold plate 2, and correspondingly, the second injection unit 4 is located on the second connecting block 412 and is provided with a second sheet metal part 45 connected with the second resistance ruler 14, wherein the second resistance ruler 14 is provided with a slidable sliding block, the sliding block is provided with a convex column, and the second sheet metal part 45 is provided with a clamping groove in matched clamping connection with the convex column so as to realize the constant connection between the second sheet metal part 45 and the sliding block on the second resistance ruler 14; the third resistance ruler 75 is arranged on the side surface of the injection seat support rod 7, correspondingly, a third sheet metal part 55 connected with the third resistance ruler 75 is arranged on the third injection unit 5 positioned on the outer side of the third connecting block 512, wherein a slidable sliding block is arranged on the third resistance ruler 75, a convex column is arranged on the sliding block, and the third sheet metal part 55 is provided with a clamping groove clamped with the convex column in a matching manner, so that the sliding block on the third sheet metal part 55 and the sliding block on the third resistance ruler 75 are always connected; the fourth resistance ruler 76 is arranged on the side surface of the ejection seat support rod 7, correspondingly, a fourth sheet metal part 65 connected with the fourth resistance ruler 76 is arranged on the fourth ejection unit 6 and positioned on the outer side of the fourth connecting block 612, wherein a slidable sliding block is arranged on the fourth resistance ruler 76, a convex column is arranged on the sliding block, and a clamping groove matched and clamped with the convex column is formed in the fourth sheet metal part 65 so as to realize that the sliding block on the fourth sheet metal part 65 and the sliding block on the fourth resistance ruler 76 are always connected; more preferably, the four-color injection molding machine is provided with a controller (not shown in the figure) for receiving data feedback of the distances between the first injection unit 3, the second injection unit 4, the third injection unit 5, the fourth injection unit 6 and the injection molding machine fixed mold plate 2 detected by the first resistance ruler 13, the second resistance ruler 14, the third resistance ruler 75 and the fourth resistance ruler 76, so as to adjust the distances between the four injection units and the injection molding machine fixed mold plate 2, so as to meet the requirements of different injection molding processes, improve the injection molding precision and make the injection molding effect better. When the injection molding machine is used, in the sliding process of the first injection unit 3, the first sheet metal part 35 of the first injection unit can drive the sliding block of the first resistance ruler 13 to slide synchronously, and the first resistance ruler 13 can detect that the position of the first injection unit 3 relative to the injection molding machine fixed die plate 2 can be fed back to the controller; in the sliding process of the second injection unit 4, the second sheet metal part 45 of the second injection unit can drive the sliding block of the second resistance ruler 14 to slide synchronously, and the second resistance ruler 14 can detect that the position of the second injection unit 4 relative to the injection molding machine fixed template 2 can be fed back to the controller; in the sliding process of the third injection unit 5, the third sheet metal part 55 of the third injection unit can drive the sliding block of the third resistance ruler 75 to slide synchronously, and the third resistance ruler 75 can detect that the position of the third injection unit 5 relative to the injection molding machine fixed template 2 can be fed back to the controller; in the sliding process of the fourth injection unit 6, the fourth sheet metal part 65 of the fourth injection unit will drive the sliding block of the fourth resistance ruler 76 to slide synchronously, and then the fourth resistance ruler 76 will detect that the position of the fourth injection unit 6 relative to the injection molding machine fixed die plate 2 will be fed back to the controller.

Further, the injection molding machine further comprises a first injection unit seat advancing and retreating oil cylinder 101 for driving the first injection unit 3 to make reciprocating translational motion relative to the injection molding machine fixed die plate 2, a second injection unit seat advancing and retreating oil cylinder 102 for driving the second injection unit 4 to make reciprocating translational motion relative to the injection molding machine fixed die plate 2, a third injection unit seat advancing and retreating oil cylinder 103 for driving the third injection unit 5 to make reciprocating translational motion relative to the injection molding machine fixed die plate 2, and a fourth injection unit seat advancing and retreating oil cylinder 104 for driving the fourth injection unit 6 to make reciprocating translational motion relative to the injection molding machine fixed die plate 2; one end of the first injection unit seat advancing and retreating oil cylinder 101 is connected to the injection molding machine fixed template 2, and the other end is connected to the first injection unit 3; one end of the second injection unit seat advancing and retreating oil cylinder 102 is connected to the injection molding machine fixed template 2, and the other end is connected to the second injection unit 4; one end of the third injection unit seat advancing and retreating oil cylinder 103 is connected to the injection molding machine fixed template 2, and the other end is connected to the third injection unit 5; one end of the fourth injection unit holder advancing-retreating cylinder 104 is connected to the injection molding machine fixed mold plate 2, and the other end thereof is connected to the fourth injection unit 6. By adopting the scheme, the four injection units can be driven to synchronously advance and retreat by the four injection unit seat advancing and retreating oil cylinders, and the advancing and retreating process is more stable. Further, the first injection unit 3 includes a first injection nozzle 34, the second injection unit 4 includes a second injection nozzle 44, the third injection unit 5 includes a third injection nozzle 54, and the fourth injection unit 6 includes a fourth injection nozzle 64; the injection molding machine fixed die plate 2 comprises a first glue inlet 21 for the first ejection nozzle 34 to extend into, a second glue inlet 22 for the second ejection nozzle 44 to extend into, a third glue inlet 23 for the third ejection nozzle 54 to extend into, and a fourth glue inlet (not shown in the figure) for the fourth ejection nozzle 64 to extend into.

The injection molding method of the four-color injection molding machine of the embodiment comprises the following steps:

s1, respectively adding four kinds of hot melt plastics with different colors into a first injection unit 3, a second injection unit 4, a third injection unit 5 and a fourth injection unit 6;

s2, simultaneously starting a first injection unit seat advancing and retreating oil cylinder 101, a second injection unit seat advancing and retreating oil cylinder 102, a third injection unit seat advancing and retreating oil cylinder 103 and a fourth injection unit seat advancing and retreating oil cylinder 104 to respectively drive a first injection unit 3 to slide towards the injection molding machine fixed template 2 along a first linear slide rail 11, a second injection unit 4 along a second linear slide rail 12, a third injection unit 5 along a third linear slide rail 73 and a fourth injection unit 6 along a fourth linear slide rail 74; after the first injection nozzle 34 enters the first glue inlet 21, the second injection nozzle 44 enters the second glue inlet 22, the third injection nozzle 54 enters the third glue inlet 23, and the fourth injection nozzle 64 enters the fourth glue inlet, the first injection unit base advancing and retreating cylinder 101, the second injection unit base advancing and retreating cylinder 102, the third injection unit base advancing and retreating cylinder 103, and the fourth injection unit base advancing and retreating cylinder 104 stop;

s3, synchronously injecting hot-melt plastics into an injection molding module (not shown in the figure) by the first injection unit 3, the second injection unit 4, the third injection unit 5 and the fourth injection unit 6, and stopping injecting the plastics by the first injection unit 3, the second injection unit 4, the third injection unit 5 and the fourth injection unit 6 after the injection molding module is filled with the hot-melt plastics;

s4, forming the hot-melt plastic in an injection mold set;

s4, separating a movable injection molding machine template (not shown in the figure) of the injection molding module from the fixed injection molding machine template 2;

and S5, taking out the molded plastic finished product to finish one-time injection molding.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. Four-color injection molding machine is with rectangle four directions ejection mechanism, its characterized in that: the injection molding machine comprises an injection molding machine rack (1), an injection molding machine fixed template (2) arranged on one side of the injection molding machine rack (1), and an injection mechanism which is arranged on the injection molding machine rack (1) and can move close to or away from the injection molding machine fixed template (2) in a translation manner along the injection molding machine rack (1); the injection mechanism comprises a first injection unit (3) and a second injection unit (4) which are arranged on the injection machine frame (1) in parallel, and a third injection unit (5) and a fourth injection unit (6) which are arranged above the first injection unit (3) and the second injection unit (4) in an opposite mode; the third injection unit (5) is arranged right above the first injection unit (3), and the fourth injection unit (6) is arranged right above the second injection unit (4).

2. The rectangular quad-injection mechanism of claim 1, wherein: the injection molding machine is characterized in that a first linear slide rail (11) and a second linear slide rail (12) which are arranged in parallel are arranged on the injection molding machine frame (1), wherein the first ejection unit (3) is matched on the first linear slide rail (11) through a first slide block piece (31), and the second ejection unit (4) is matched on the second linear slide rail (12) through a second slide block piece (41).

3. The rectangular quad-injection mechanism of claim 2, wherein: the first linear sliding rail (11) comprises two first sliding ways (111) which are arranged in parallel, correspondingly, the first sliding block piece (31) comprises two first sliding blocks (311) which are respectively matched on the two first sliding ways (111), and a first connecting block (312) which connects the two first sliding blocks (311) into a whole; the second linear sliding rail (12) comprises two second sliding ways (121) which are arranged in parallel, and correspondingly, the second sliding block piece (41) comprises two second sliding blocks (411) which are respectively matched on the two second sliding ways (121), and a second connecting block (412) which connects the two second sliding blocks (411) into a whole.

4. The rectangular quad-injection mechanism of claim 2, wherein: the first injection unit (3) comprises a first injection plastic cylinder (32) and a first injection unit seat (33) covering part of the first injection plastic cylinder (32), and the first injection unit seat is detachably mounted on the first sliding block piece (31) through a screw; the second injection unit (4) comprises a second injection plastic cylinder (42) and a second injection unit seat (43) covering part of the second injection plastic cylinder (42), and the second injection unit seat is detachably mounted on the second sliding block piece (41) through screws.

5. The rectangular square injection mechanism for the four-color injection molding machine according to claim 1, characterized in that: an injection seat support rod (7) is arranged above the third injection unit (5) and the fourth injection unit (6) of the injection molding machine frame (1), one end of the injection seat support rod (7) is fixed on the injection molding machine fixed die plate (2) through a front injection seat support rod lower cushion block (71), the other end of the injection seat support rod is fixed on the injection molding machine frame (1) through a rear injection seat support rod lower cushion block (72), and the front injection seat support rod lower cushion block (71) is fixed on the injection molding machine fixed die plate (2) through a positioning pin; the lower end of the ejection seat support rod (7) is provided with a third linear slide rail (73) and a fourth linear slide rail (74) which are arranged in parallel, the third ejection unit (5) is matched on the third linear slide rail (73) through a third slide block piece (51), and the fourth ejection unit (6) is matched on the fourth linear slide rail (74) through a fourth slide block piece (61).

6. The rectangular quad-injection mechanism of claim 5, wherein: the third linear sliding rail (73) comprises two third sliding ways (731) which are arranged in parallel, and correspondingly, the third sliding block piece (51) comprises two third sliding blocks (511) which are respectively matched on the two third sliding ways (731), and a third connecting block (512) which connects the two third sliding blocks (511) into a whole; the fourth linear sliding rail (74) comprises two fourth sliding ways (741) which are arranged in parallel, and correspondingly, the fourth sliding block piece (61) comprises two fourth sliding blocks (611) which are respectively matched on the two fourth sliding ways (741), and a fourth connecting block (612) which connects the two fourth sliding blocks (611) into a whole.

7. The rectangular quad-injection mechanism of claim 5, wherein: the third injection unit (5) comprises a third plastic injection cylinder (52) and a third injection unit seat (53) covering part of the third plastic injection cylinder (52), and the third injection unit seat is detachably mounted on the third sliding block piece (51) through screws; the fourth injection unit (6) comprises a fourth injection plastic cylinder (62) and a fourth injection unit seat (63) wrapping part of the outside of the fourth injection plastic cylinder (62), and the fourth injection unit seat is detachably mounted on the fourth sliding block piece (61) through screws.

8. The rectangular quad-injection mechanism of claim 5, wherein: a first resistance ruler (13) for adjusting the distance between the first injection unit (3) and the injection molding machine fixed die plate (2) and a second resistance ruler (14) for adjusting the distance between the second injection unit (4) and the injection molding machine fixed die plate (2) are arranged on the injection molding machine frame (1); and a third resistance ruler (75) for adjusting the distance between the third injection unit (5) and the injection molding machine fixed die plate (2) and a fourth resistance ruler (76) for adjusting the distance between the fourth injection unit (6) and the injection molding machine fixed die plate (2) are arranged on the injection seat support rod (7).

9. The rectangular quad-injection mechanism of claim 1, wherein: the injection molding machine is characterized by further comprising a first injection unit seat advancing and retreating oil cylinder (101) for driving the first injection unit (3) to do reciprocating translation relative to the injection molding machine fixed mold plate (2), a second injection unit seat advancing and retreating oil cylinder (102) for driving the second injection unit (4) to do reciprocating translation relative to the injection molding machine fixed mold plate (2), a third injection unit seat advancing and retreating oil cylinder (102) for driving the third injection unit (5) to do reciprocating translation relative to the injection molding machine fixed mold plate (2), and a fourth injection unit seat advancing and retreating oil cylinder (102) for driving the fourth injection unit (6) to do reciprocating translation relative to the injection molding machine fixed mold plate (2); one end of the first injection unit seat advancing and retreating oil cylinder (101) is connected to the injection molding machine fixed template (2), and the other end of the first injection unit seat advancing and retreating oil cylinder is connected to the first injection unit (3); one end of the second injection unit seat advancing and retreating oil cylinder (102) is connected to the injection molding machine fixed template (2), and the other end of the second injection unit seat advancing and retreating oil cylinder is connected to the second injection unit (4); one end of the third injection unit seat advancing and retreating oil cylinder (102) is connected to the injection molding machine fixed template (2), and the other end of the third injection unit seat advancing and retreating oil cylinder is connected to the third injection unit (5); one end of the fourth injection unit seat advancing and retreating oil cylinder (102) is connected to the injection molding machine fixed template (2), and the other end of the fourth injection unit seat advancing and retreating oil cylinder is connected to the fourth injection unit (6).

10. The rectangular quad-injection mechanism of claim 1, wherein: the first ejection unit (3) comprises a first ejection nozzle (34), the second ejection unit (4) comprises a second ejection nozzle (44), the third ejection unit (5) comprises a third ejection nozzle (54), and the fourth ejection unit (6) comprises a fourth ejection nozzle (64); the injection molding machine fixed template (2) comprises a first glue inlet (21) for the first ejection nozzle (34) to extend into, a second glue inlet (22) for the second ejection nozzle (44) to extend into, a third glue inlet (23) for the third ejection nozzle (54) to extend into, and a fourth glue inlet for the fourth ejection nozzle (64) to extend into.

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