CN106273232A - Trichroism liquid silica gel injection moulding apparatus - Google Patents

Abstract

The object of the present invention is to provide a three-color liquid silicone injection molding device. The invention adopts a multi-cavity transfer method, and uses a gear changing box to realize single drive, two-axis drive or three-axis simultaneous drive to realize three-cavity simultaneous injection molding or single-cavity and double-cavity injection molding. In the present invention, an intermediate sliding gear drives the transmission gears of three screw pump screws, and the three pump shafts are independent, and each pump shaft is driven by a transmission shaft and a transmission gear. The device of the present invention consists of: an intermediate transmission spline shaft, a one-cavity transmission shaft, a one-cavity transmission gear limit sleeve, a one-cavity transmission gear, a sliding gear shift fork, an intermediate sliding gear, a two-chamber transmission gear, a three-chamber transmission gear, The intermediate sliding gear limit sleeve, the one-cavity screw shaft, the connecting transition plate, the screw front end bearing, the pump body, the one-cavity screw, and the control rod are composed. The three-color liquid silicone injection molding device of the present invention can solve the problem of simultaneous injection molding of multi-color liquid silicone, and has a reliable structure and is convenient to use.

Description

Three-color liquid silicone injection molding device

technical field

With the increasing number of silicone products, the requirements for silicone equipment are also getting higher and higher. Among them, the demand for injection molding equipment for multi-color integrated silicone products is becoming stronger and stronger. The invention relates to a three-color liquid silicone injection molding device.

Background technique

So far, silica gel is one of the materials with the best affinity for organisms. Therefore, there are more and more types of silicone medical and daily necessities. Previously, silicone products were mostly single-color, which limited the design and manufacture of silicone products in terms of types, logos, colors, etc. The key reason is that the silicone injection molding equipment is all single-material injection molding, even if there are multiple color requirements, the process of secondary injection molding has to be implemented. As a result, product quality declines and production costs rise, restricting product design and production. The invention relates to a three-color liquid silicone injection molding device for a silicone injection molding machine.

Contents of the invention

The object of the present invention is to provide a three-color liquid silicone injection molding device. The invention adopts a multi-cavity transfer method, and uses a gear changing box to realize single drive, two-axis drive or three-axis simultaneous drive to realize three-cavity simultaneous injection molding or single-cavity and double-cavity injection molding. To achieve the purpose of multi-color liquid silicone injection molding. In the present invention, an intermediate sliding gear drives the transmission gears of three screw pump screws, and the three pump shafts are independent, and each pump shaft is driven by a transmission shaft and a transmission gear. The device of the present invention is composed of: coupling, intermediate transmission spline shaft, one-cavity transmission shaft, one-chamber transmission gear limit sleeve, one-chamber transmission gear, sliding gear fork, middle sliding gear, two-chamber transmission gear, three Cavity transmission gear, intermediate sliding gear limit sleeve, one cavity screw shaft, connecting transition plate, screw front end bearing, feed inlet, pump body, one cavity screw, discharge port, screw rear end bearing, rear end pump cover and Joystick composition.

According to the present invention, the left end of the intermediate transmission spline shaft is equipped with a shaft coupling, which is connected with the driving motor shaft coupling. The right section is a spline, on which the intermediate slip gear is set, and the left and right two sections of supporting journals of the intermediate transmission spline shaft are supported in the gear changing box by rolling bearings. The outer diameter of the right end of the intermediate drive spline shaft is fitted with an intermediate slip gear stop sleeve.

According to the present invention, the one-cavity transmission shaft is a hollow shaft whose left section is solid and the right section is a hollow spline hole, and is supported in the gear changing box by two rolling bearings at the left and right ends; One-cavity transmission gear limit sleeve, a cavity transmission gear is set on the outer diameter of the middle section, and is connected with a flat key between the transmission gear and the shaft. The spline part of the one-cavity screw shaft is loaded into the spline hole of the right section of the one-cavity transmission shaft.

According to the present invention, the spline hole of the right section of the one-cavity transmission shaft and the spline portion of the one-cavity screw shaft adopt rectangular splines, and adopt the method of large clearance fit between the outer diameter and the inner diameter of the splines, so that the one-cavity transmission shaft and the one-cavity The radial floating connection relationship is formed between the screw shafts, and only the torque is transmitted.

According to the present invention, the intermediate sliding gear is a large-width splined inner hole gear, and the left end of its outer diameter is provided with an annular groove for inserting into the socket of the sliding gear shift fork; the width of the right gear part is larger than a cavity, The sum of the width of two-chamber and three-chamber transmission gears. The slidable distance of the intermediate sliding gear on the intermediate transmission spline shaft is greater than the sum of the widths of the second and third chamber transmission gears. The middle sliding gear can slide to the left under the control of the sliding gear shift fork; it can respectively mesh with the transmission gear of the first chamber, and only transmit the power to the screw of the first chamber; it can mesh with the transmission gear of the first chamber and the second chamber at the same time, and transfer the power to the screw. Transmission to the one-chamber and two-chamber screws; meshing with the one-chamber, two-chamber, and three-chamber transmission gears at the same time, the power is simultaneously transmitted to the three transmission states of the one-chamber, two-chamber, and three-chamber screws.

According to the present invention, the total length of the two-chamber transmission shaft and the three-chamber transmission shaft is the same as that of the one-chamber transmission shaft, and they are all supported in the gearbox by rolling bearings; but the supporting positions of the transmission gears on the two-chamber transmission shaft and the three-chamber transmission shaft are different , and the support position of the one-chamber transmission gear on the one-cavity transmission shaft is also different; the lengths of the spline inner holes of the right section of the three transmission shafts are different, and the matching lengths with the screw rods of each chamber are also different. The axial position of the one-cavity transmission gear on the one-cavity transmission shaft is fixed by the one-chamber transmission gear limit sleeve. The lengths of the transmission gear spacer sleeves fitted on the outer diameter of the left section of each transmission shaft are different.

According to the present invention, the gear changing box and the casing of the three-cavity screw pump are connected by a connecting transition plate, which not only ensures the independence and completeness of the gear changing box and the pump body, but also ensures the mutual positional relationship between the two and facilitates installation.

According to the present invention, the screws in the three cavities are supported in the pump body by two sliding bearings, the front end bearing of the screw and the rear end bearing of the screw; the pump cover at the front end of the pump body is a pump cover with holes, and the pump cover at the rear end of the pump body is a closed pump cover .

Description of drawings

Accompanying drawing illustrates concrete structure and working principle of the present invention in conjunction with implementation example, wherein:

Figure 1 is a cross-sectional view of a three-color liquid silicone injection molding device; in the figure, 1 is a coupling, 2 is an intermediate drive spline shaft, 3 is a drive shaft with a cavity, 4 is a limit sleeve for a drive gear with a cavity, and 5 is a cavity Transmission gear, 6 is a sliding gear shift fork, 7 is an intermediate sliding gear, 8 is a two-chamber transmission gear, 9 is a three-chamber transmission gear, 10 is a limit sleeve for the middle sliding gear, 11 is a one-chamber screw shaft, 12 13 is a screw rod front end bearing, 14 is a feed inlet, 15 is a pump body, 16 is a cavity screw rod, 17 is a discharge port, 18 is a screw rod rear end bearing, and 19 is a rear end pump cover.

Fig. 2 is a partial sectional view of the present invention, among the figure, 6 is a sliding gear shift fork, and 20 is a joystick.

Figure 3 is a partially enlarged view of the section view of the three-color liquid silicone injection molding device. In the figure: 1 is the coupling, 2 is the spline shaft of the intermediate transmission, 3 is the transmission shaft of one cavity, 4 is the limit sleeve of the transmission gear of one cavity, 5 1 is a one-cavity transmission gear, 6 is a sliding gear shift fork, 7 is an intermediate sliding gear, 8 is a two-chamber transmission gear, 9 is a three-chamber transmission gear, 10 is a limit sleeve for an intermediate sliding gear, and 11 is a one-chamber screw Axle, 12 is to connect transition disc, and 13 is the screw rod front end bearing.

detailed description

The accompanying drawing is a three-color liquid silicone injection molding device of the embodiment of the present invention. The invention adopts a multi-cavity transfer method, uses a gear changing box to realize single drive of the screw in the three cavities, two-axis drive or three-axis simultaneous drive, and realizes three-cavity simultaneous injection molding or single-cavity and double-cavity injection molding. To achieve the purpose of multi-color liquid silicone injection molding. In the present invention, an intermediate sliding gear 6 drives the transmission gears of three screw pump screws, and the three pump shafts are independent, and each pump shaft is driven by a transmission shaft and a transmission gear. The device of the present invention consists of: coupling 1, intermediate transmission spline shaft 2, one-cavity transmission shaft 3, one-chamber transmission gear limit sleeve 4, one-cavity transmission gear 5, slip gear fork 6, middle slip gear 7 , two-cavity transmission gear 8, three-cavity transmission gear 9, intermediate sliding gear limit sleeve 10, one-cavity screw shaft 11, connecting transition plate 12, screw front end bearing 13, feed port 14, pump body 15, one-cavity screw 16, the discharge port 17, the screw rear end bearing 18, the rear end pump cover 19 and the joystick 20 are formed.

According to this implementation example, the left end of the intermediate transmission spline shaft 2 is equipped with a coupling 1, which is connected with the driving motor coupling. The right section is a spline, the middle slip gear 6 is set on the spline, and the left and right two sections of supporting journals of the middle transmission spline shaft 2 are supported in the gear changing box by rolling bearings. The outer diameter of the right end of the intermediate drive spline shaft 2 is fitted with an intermediate slip gear stop sleeve 10 .

According to this implementation example, the one-cavity transmission shaft 3 is a semi-hollow shaft whose left section is solid and the right section is a hollow spline hole, and is supported in the gear changing box by two rolling bearings at the left and right ends; A chamber transmission gear stopper 4 is set on the diameter, and a chamber transmission gear 5 is set on the middle section outer diameter, and is connected with a flat key between the transmission gear and the shaft. The spline part of the one-chamber screw shaft 11 is packed into the spline hole of the right section of the one-cavity transmission shaft 3 .

According to this implementation example, the spline hole of the right section of the one-chamber transmission shaft 3 and the spline part of the one-chamber screw shaft 11 adopt rectangular splines, and adopt the method of large clearance fit between the outer diameter and the inner diameter of the splines, so that the one-chamber transmission shaft 3 and the one-cavity screw shaft 11 form a radially floating connection relationship, and only transmit torque.

According to this implementation example, the intermediate sliding gear 7 is a large-width spline inner hole gear, and the left end of its outer diameter is provided with an annular groove, which is used to insert the socket of the sliding gear shift fork 6; the width of the right segment gear part is larger than The sum of the widths of one-cavity transmission gear 5, two-chamber transmission gear 8, and three-chamber transmission gear 9. The slidable distance of the intermediate sliding gear 7 on the intermediate transmission spline shaft 2 is greater than the sum of the widths of the two-cavity transmission gear 8 and the three-chamber transmission gear 9 . The middle sliding gear 7 can slide to the left under the control of the sliding gear shift fork 6 and the joystick 20; respectively realize meshing with the one-cavity transmission gear 5, and only transmit power to the one-chamber screw rod 16; 5 meshes with the two-chamber transmission gear 8, and transmits power to the one-chamber screw 16 and the two-chamber screw; simultaneously meshes with the one-chamber transmission gear 5, two-chamber transmission gear 8 and three-chamber transmission gear 9, and transmits power to the one-chamber transmission gear at the same time Three transmission states of screw rod 16, two-cavity screw rod and three-cavity screw rod.

According to this implementation example, the total length of the two-chamber transmission shaft and the three-chamber transmission shaft is the same as the total length of the one-chamber transmission shaft 3, and they are all supported in the gearbox by rolling bearings; The supporting positions of the two-cavity transmission gear 8 and the three-cavity transmission gear 9 are different from those of the one-cavity transmission gear 5 on the one-cavity transmission shaft 3; The mating lengths of the screws are also different. The one-chamber transmission gear 5 on the one-cavity transmission shaft 3 is fixed in the axial position by the one-chamber transmission gear stopper 4 . The lengths of the transmission gear spacer sleeves fitted on the outer diameter of the left section of each transmission shaft are different.

According to this implementation example, the connecting transition plate 12 is used to connect the gear changing box and the casing of the three-cavity screw pump, which not only ensures the independence and completeness of the gear changing box and the pump body, but also ensures the mutual positional relationship between the two and facilitates installation. .

According to this implementation example, the one-cavity screw rod 16 is supported in the pump body by two sliding bearings, the screw rod front end bearing 13 and the screw rod rear end bearing 18 . 2. The screws in the two cavities are supported in the pump body by two sliding bearings, the front end bearing of the screw and the rear end bearing of the screw; the pump cover at the front end of the pump body is a pump cover with holes, and the pump cover 19 at the rear end of the pump body is a closed pump cover .

The three-color liquid silicone injection molding device manufactured according to the invention can solve the problem of simultaneous injection molding of multi-color liquid silicone, and has a reliable structure and convenient use.

Claims (8)

1. The most trichroism liquid silica gel injection moulding apparatus, it is characterised in that the present invention uses multi-cavity transfer method, utilization to change tooth case and realize three The single driving of screw rod in individual injection molding cavity, two axles drive or three axles simultaneously drive, it is achieved three chambeies are molded simultaneously or single-chamber, two-chamber note Mould, reach multicolor liquid silica gel injection purpose；The present invention is driven the transmission of three screw rod of screw pumps by a middle shifting slide gear Gear, three pump shafts are each independent, and each pump shaft is by a power transmission shaft and a travelling gear transmission；Apparatus of the present invention by: connection Axial organ, intermediate transmission splined shaft, a chamber power transmission shaft, a chamber travelling gear stop collar, a chamber travelling gear, shifting slide gear shift fork, Middle shifting slide gear, two chamber travelling gears, three chamber travelling gears, middle shifting slide gear stop collar, a chamber screw shaft, connect transition Dish, screw front end bearing, charging aperture, the pump housing, a chamber screw rod, discharging opening, spiro rod rear end bearing, rear end pump cover and stick group Become.
2. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that the left end dress of intermediate transmission splined shaft Having shaft coupling, be connected with driving motor coupler, right section of intermediate transmission splined shaft is spline, sliding tooth in the middle of spline upper sleeve dress Wheel, two sections, the left and right of intermediate transmission splined shaft bearing journal is bearing in by rolling bearing and changes in tooth case, intermediate transmission splined shaft Shifting slide gear stop collar in the middle of suit on right-hand member external diameter.
3. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that a chamber power transmission shaft is one left section and is Solid, right section is the axle in midair of Herba Maesae Prelarii keyhole, two rolling bearings at two ends, left and right be bearing in and change in tooth case；One chamber transmission Be set with a chamber travelling gear stop collar on left section of external diameter of axle, stage casing external diameter be set with a chamber travelling gear, travelling gear and axle it Between connect with flat key, load the splined section of a chamber screw shaft in the splined hole of right section of a chamber power transmission shaft.
4. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that the splined hole of right section of a chamber power transmission shaft Use rectangular spline with the splined section of a chamber screw shaft, and take spline external diameter and the method for internal diameter wide arc gap cooperation, make one Form the annexation of radial floating between chamber power transmission shaft and a chamber screw shaft, only transmit moment of torsion.
5. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that middle shifting slide gear is a big width The spline endoporus gear of degree, its external diameter left end is provided with annular groove, is used for inserting the socket of shifting slide gear shift fork；Right section of gear part The width divided is more than a chamber, two chambeies, three chamber travelling gear width sums；Middle shifting slide gear on intermediate transmission splined shaft can Skidding distance is more than two, three chamber travelling gear width sums；Middle shifting slide gear can be under the manipulation of shifting slide gear shift fork Left sliding, realizes respectively engaging with a chamber travelling gear, only imparts power to a chamber screw rod；With a chamber and two chamber travelling gears It is simultaneously engaged, imparts power to a chamber and two chamber screw rods；It is simultaneously engaged with a chamber, two chambeies, three chamber travelling gears, power is same Time pass to three kinds of drive states of a chamber, two chambeies, three chamber screw rods.
6. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that two chamber power transmission shafts and three chamber power transmission shafts Total length and a chamber power transmission shaft identical, all use rolling bearing to be bearing in and change in tooth case；But two chamber power transmission shafts and three chamber transmissions The Support Position of axle upper transfer gear is different, also differs with the Support Position of the chamber travelling gear on a chamber power transmission shaft；Three The length of right section of spline endoporus of individual power transmission shaft is different, also differs with the length of fit of each chamber screw rod；On one chamber power transmission shaft one Chamber travelling gear is fixed axial location by a chamber travelling gear stop collar, the travelling gear of suit on upper left section of external diameter of each power transmission shaft The length of stop collar is different.
7. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that change tooth case and the shell of three chamber screw pumps Use between body and connect transition disc connection, both ensure the independent completion changing tooth case with the pump housing, ensure again mutual position between the two Put relation and easy for installation.
8. Trichroism liquid silica gel injection moulding apparatus the most as claimed in claim 1, it is characterised in that the screw rod screw rod in three cavitys Front end bearing and two sliding supported conditions of spiro rod rear end bearing are in the pump housing；Pump housing front end pump cover is porose pump cover, after the pump housing End pump cover is to close pump cover.