# US 2014/0196807 A1 · Injecting machine for two different liquids

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- Number: US 2014/0196807 A1
- Document ID: US20140196807A1
- Status: Published application
- Kind: A1
- Application number: 14/153,890
- Filed: 2014-01-13
- Published: 2014-07-17
- Earliest claimed: 2013-01-16
- Assignees: Nissei Plastic Industrial Co., Ltd.
- Applicants: Nissei Plastic Industrial Co., Ltd.
- Inventors: Toru IKEDA
- Web page: https://patentgrep.com/patent/US20140196807A1

## CPC

- B01F 25/43141: {composed of consecutive sections of helical formed elements}
- B29B 7/582: {for discharging, e.g. doors}
- B01F 25/44163: {Helical grooves formed on opposed surfaces, e.g. on cylinders or cones}
- B01F 27/9213: {the helices having a diameter only slightly less than the diameter of the receptacle}
- B01F 27/923: {the material flowing continuously through the receptacle}
- B01F 33/821: {with consecutive receptacles}
- B01F 33/8212: {with moving and non-moving stirring devices}
- B01F 35/754251: {reciprocating in the mixing receptacle}
- B29B 7/401: {having a casing closely surrounding the rotor, e.g. with a plunger for feeding the material (B29B7/407, B29B7/42 take precedence)}
- B29B 7/7605: {having additional mixing arrangements (B29B7/7673 takes precedence)}
- B29B 7/7626: {using measuring chambers of piston or plunger type (B29B7/7621 takes precedence; for mixing in general B01F35/882)}
- B29B 7/7647: {Construction of the mixing conduit module or chamber part}
- B29B 7/7652: {Construction of the discharge orifice, opening or nozzle}
- B29B 7/7689: {Plunger constructions}
- B29C 45/1866: {Feeding multiple materials (B29C45/1816 takes precedence)}
- B29C 45/54: and plasticising screw {(B29C45/532 takes precedence)}
- B29C 45/542: {using an accumulator between plasticising and injection unit, e.g. for a continuously operating plasticising screw}
- B01F 25/431972: {Mounted on an axial support member, e.g. a rod or bar}
- B29C 2045/547: {continuously rotating plasticising screw cooperating with a single injection plunger (B29C45/542 takes precedence)}
- Y10T 137/87652: With means to promote mixing or combining of plural fluids
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An injecting machine for two different liquids is configured to inject a liquid mixture of the two different liquids in a first-in first-out manner. The liquid mixture passes from a passage of an injection cylinder through a helical groove of a plunger into a forward space formed forwardly of the plunger as the plunger gradually moves back. When the plunger reaches a fully retracted position, a first part of the mixture remains in a front portion of the forward space while a last part of the mixture remains in a rear portion of the forward space. As the plunger moves to an advanced position, the first part of the mixture is first injected out of a nozzle and the last part of the mixture is finally injected out of the nozzle.

## Claims

### Claim 1

An injecting machine (10) for two different liquid materials (35, 37), comprising:
an injection cylinder (12) having a nozzle (11) disposed on a distal end thereof;
a plunger (13) reciprocally received in the injection cylinder for moving between an advanced position and a retracted position, the plunger injecting a liquid mixture (39) of the two different liquid materials as the plunger moves to the advanced position;
plunger moving means (17) for causing the plunger to move between the advanced position and the retracted position; and
a mixing mechanism (20) disposed on the injection cylinder for mixing the two different liquid materials together to feed the liquid mixture into the injection cylinder, and
wherein the plunger (13) includes a front portion having a helical groove (13a) formed on an outer circumferential surface thereof to allow the liquid mixture (39) fed from the mixing mechanism (20) to pass through the helical groove (13a) for collecting in a forward space formed forward of the front portion of the plunger (13).

### Claim 2 (depends on 1)

The machine of claim 1, wherein the two different liquid materials include a first liquid material (35) and a second liquid material (37), and wherein the mixing mechanism comprises:
a mixing block (25);
a screw (26) rotatably accommodated in the mixing block;
a screw rotating mechanism (27) supported on the mixing block for rotating the screw;
a first liquid supply passage (32) disposed at a first portion of the mixing block for supplying the first liquid material to a proximal portion of the screw;
a second liquid supply passage (33) disposed at a second portion of the mixing block for supplying the second liquid material to the proximal portion of the screw, the second portion being separate from the first portion; and
a first passage (28) formed in the mixing block for causing the liquid mixture to flow out of a vicinity of a distal end of the screw.

### Claim 3 (depends on 2)

The machine of claim 2, wherein the first liquid supply passage has a first connection port (32a) formed in the first portion of the mixing block, and the second liquid supply passage has a second connection port (33a) formed in the second portion of the mixing block, the first connection port and the second connection port being arranged on a line (38) passing through an axis of rotation of the screw, and wherein the screw is interposed between the first connection port of the first liquid supply passage and the second connection port of the second liquid supply passage.