CN111168932A

CN111168932A - Injection mold with self-shearing sprue for producing PVC (polyvinyl chloride) pipes

Info

Publication number: CN111168932A
Application number: CN201811334829.XA
Authority: CN
Inventors: 赵龙山
Original assignee: Jiangsu Wanlong Pipe Industry Co ltd
Current assignee: Jiangsu Wanlong Pipe Industry Co ltd
Priority date: 2018-11-10
Filing date: 2018-11-10
Publication date: 2020-05-19

Abstract

The invention discloses an injection mould with a self-shearing sprue for producing a PVC pipe, which comprises a mould set, wherein the mould set comprises a base, a mounting plate, an upper mould, a lower mould and an injection mechanism, fixed rods are arranged on two sides of the upper end of the base, the mounting plate is arranged on the upper end of the fixed rods, the upper mould and the lower mould are respectively movably arranged on two sides of the fixed rods, mounting parts are respectively arranged on two sides of the mounting plate, fixing parts are respectively fixedly arranged on two sides of the base, and a double-head screw rod is movably arranged between the fixing parts and the mounting parts through a bearing. According to the invention, after the die set is fixed and adjusted, the injection molding mechanism is used for performing injection molding on the inner side of the die cavity, after the injection molding is completed, the upper die and the lower die are separated, the isolation plate of the self-shearing mechanism is driven by the spring to isolate the sprue, so that the purpose of self-shearing the sprue is realized, the manual trimming of the position, corresponding to the sprue, on the PVC pipe fitting is avoided, the process is simplified, and the working efficiency is improved.

Description

Injection mold with self-shearing sprue for producing PVC (polyvinyl chloride) pipes

Technical Field

The invention relates to the technical field of injection molds with self-shearing gates, in particular to an injection mold with a self-shearing gate for producing a PVC pipe.

Background

An injection mold is a tool for producing plastic products; the injection mold for producing the PVC pipe fitting is mainly of a one-mold two-cavity type structure, the two cavities are communicated with a sprue through a runner, and the sprue is generally a direct sprue. Like this, still need manually cut two PVC pipe fittings after the shaping of PVC pipe fitting to repair correspond on the PVC pipe fitting the position of runner, the technology is complicated and inefficiency, and current device does not possess fixing device simultaneously, leads to going up mould, lower mould and the phenomenon appearance that the die sinking and skew appear in the in-process of moulding plastics.

Disclosure of Invention

The invention aims to provide an injection mould with a self-shearing sprue for producing a PVC pipe, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an injection mould with a self-shearing sprue for producing a PVC pipe comprises a mould set, wherein the mould set comprises a base, a mounting plate, an upper mould, a lower mould and an injection molding mechanism, fixing rods are arranged on two sides of the upper end of the base, the mounting plate is arranged at the upper end of the fixing rods, the upper mould and the lower mould are respectively movably arranged on two sides of the fixing rods, mounting parts are respectively arranged on two sides of the mounting plate, fixing parts are respectively fixedly arranged on two sides of the base, a double-headed screw rod is movably arranged between the mounting parts and the mounting parts through bearings, two ends of the upper mould and the lower mould are respectively movably arranged on the outer sides of the double-headed screw rod through threads, the injection molding mechanism is arranged on two sides of the fixing rods, the injection molding mechanism comprises an injection molding part, a runner and a sprue, the sprue is arranged in the middle of, the sprue is communicated with the runner, and a self-shearing mechanism is arranged at one end of the sprue close to the upper die and one end of the lower die.

Preferably, the self-shearing mechanism comprises a movable groove, a partition plate and a spring, the movable groove is formed in the upper end of an inner sprue of the injection molding part, a connecting rod is movably mounted at the upper end of the inner side of the movable groove through a pin shaft, the spring is mounted between the upper end of the connecting rod and the movable groove, the partition plate is mounted on one side, close to the spring, of the lower end of the connecting rod, and a movable part is movably mounted on one side, far away from the partition plate, of the connecting rod through the pin shaft.

Preferably, a motor is fixedly arranged on the mounting seat at the upper end of the mounting part, and the output shaft end of the motor is in transmission connection with the rotating shaft where the double-head screw rod is located through a coupler.

Preferably, the gate is a submarine gate.

Preferably, the upper die and the lower die are fixed through a fixing mechanism, the fixing mechanism comprises an adjusting rod, two fixing clamping plates and a fastening bolt, the adjusting rod is installed between the upper die and the lower die, the two fixing clamping plates are respectively sleeved at two ends of the adjusting rod, and the fastening bolt is installed between the fixing clamping plates and the adjusting rod.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the die set and the self-shearing mechanism are arranged, after the die set is fixed and adjusted, the injection molding mechanism is used for performing injection molding on the inner side of the die cavity, after the injection molding is completed, the upper die and the lower die are separated, the sprue is isolated by the isolation plate of the self-shearing mechanism under the driving of the spring, so that the purpose of self-shearing the sprue is realized, the manual trimming of the position, corresponding to the sprue, on the PVC pipe fitting is avoided, the process is simplified, and the working efficiency is improved.

2. According to the invention, by arranging the fixing mechanism, after the dies are combined, the positions of the fixing clamping plates on the adjusting rods are adjusted and fixed through the fastening bolts, so that the phenomena of die opening and offset of the upper die and the lower die in the injection molding process are avoided, and the injection molding stability is ensured.

Drawings

FIG. 1 is a schematic view of the whole structure of an injection mold with a self-shearing gate for producing PVC pipes.

FIG. 2 is an installation view of the self-gated injection mold spacer and spring of the present invention for the production of PVC pipe.

FIG. 3 is an installation view of a motor and die set of an injection mold with a self-shearing gate for producing PVC pipe according to the present invention.

In the figure: 1. a base; 2. mounting a plate; 3. an upper die; 4. a lower die; 5. an injection molding mechanism; 51. an injection molded part; 52. a shunt channel; 53. a gate; 6. fixing the rod; 7. a mounting member; 8. a fixing member; 9. a double-ended screw; 10. a self-shearing mechanism; 101. a movable groove; 102. a separator plate; 103. a spring; 104. a connecting rod; 105. a movable member; 11. a motor; 12. a fixing mechanism; 121. adjusting a rod; 122. fixing the clamping plate; 123. and fastening the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an injection mould with a self-shearing sprue for producing PVC pipes comprises a mould set, wherein the mould set comprises a base 1, a mounting plate 2, an upper mould 3, a lower mould 4 and an injection molding mechanism 5, fixing rods 6 are arranged on two sides of the upper end of the base 1, the mounting plate 2 is arranged on the upper end of the fixing rods 6, the upper mould 3 and the lower mould 4 are respectively movably arranged on two sides of the fixing rods 6, mounting parts 7 are respectively arranged on two sides of the mounting plate 2, fixing parts 8 are respectively fixedly arranged on two sides of the base 1, a double-end screw 9 is movably arranged between the fixing parts 8 and the mounting parts 7 through bearings, two ends of the upper mould 3 and the lower mould 4 are respectively movably arranged on the outer sides of the double-end screw 9 through threads, the injection molding mechanism 5 is arranged on two sides of the fixing rods 6, the injection molding mechanism 5 comprises an injection molding part 51, a runner, the runner 52 is arranged in the middle of the injection molding part 51, the gates 53 are arranged on two sides of the runner 52, the gates 53 are communicated with the runner 52, and the self-shearing mechanism 10 is arranged at one end of each gate 53 close to the upper die 3 and the lower die 4.

The self-shearing mechanism 10 comprises a movable groove 101, an isolation plate 102 and a spring 103, wherein the movable groove 101 is formed in the upper end of an inner gate 53 of the injection molding part 51, a connecting rod 104 is movably mounted at the upper end of the inner side of the movable groove 101 through a pin shaft, the spring 103 is mounted between the upper end of the connecting rod 104 and the movable groove 101, the isolation plate 102 is mounted at one side, close to the spring 103, of the lower end of the connecting rod 104, and a movable piece 105 is movably mounted at one side, far away from the isolation plate 102, of the connecting rod 104 through a pin shaft, so that self-shearing can be; a motor 11 is fixedly arranged on an upper end mounting seat of the mounting part 7, and an output shaft end of the motor 11 is in transmission connection with a rotating shaft where the double-end screw 9 is located through a coupler, so that the production efficiency is improved conveniently; the gate 53 is a hidden gate 53, so that the injection molding efficiency is improved; go up and fix through fixed establishment 12 between mould 3 and the lower mould 4, fixed establishment 12 is including adjusting pole 121, fixed cardboard 122, fastening bolt 123, it installs between mould 3 and lower mould 4, two to adjust pole 121 fixed cardboard 122 overlaps respectively and establishes at the both ends of adjusting pole 121, fastening bolt 123 installs between fixed cardboard 122 and adjust pole 121, is convenient for fixed mould 3, lower mould 4, avoids the mould die sinking.

The working principle is as follows: when the injection molding machine is used, the double-headed screw 9 is driven to rotate by the starting motor 11 so as to drive the upper die 3 and the lower die 4 to carry out die assembly, the upper die 3 drives the moving part 105 to move downwards in the die assembly process, the connecting rod 104 drives the isolating plate 102 to move upwards to leave the sprue 53, the spring 103 is extruded, the position of the fixing clamping plate 122 on the adjusting rod 121 is adjusted and fixed by the fastening bolt 123, the phenomena of die opening and deviation in the injection molding process of the upper die 3 and the lower die 4 are avoided, so that the injection molding stability is ensured, after the adjustment and the fixation, injection molding materials are injected through the split runner 52, the injection molding is carried out on the inner side of an injection molding cavity through the sprue 53, after the injection molding is completed, the fixing mechanism 12 is disassembled, the upper die 3 and the lower die 4 are driven to carry out die opening by the starting motor 11, when the upper die 3 leaves the moving part, and then seal runner 53, and then realize the purpose from cutting, avoid manual again to the PVC pipe fitting correspond the runner 53 the position to maintain, simplified technology and improved work efficiency.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an injection mould that area was from cutting runner for producing PVC pipe, includes the die set, its characterized in that: the utility model discloses a mould set, including base (1), mounting panel (2), go up mould (3), lower mould (4), injection moulding mechanism (5), the upper end both sides of base (1) are provided with dead lever (6), install the upper end at dead lever (6) mounting panel (2), go up mould (3), lower mould (4) respectively movable mounting in the both sides of dead lever (6), the both sides of mounting panel (2) are provided with installed part (7) respectively, the both sides of base (1) are fixed respectively and are provided with mounting (8), there is double-end screw (9) through bearing movable mounting between mounting (8) and installed part (7), go up the both ends of mould (3), lower mould (4) respectively through screw thread movable mounting in the outside of double-end screw (9), the both sides at dead lever (6) are installed in injection moulding mechanism (5), injection moulding mechanism (5) are including injection molding (51), Runner (52), runner (53), the both sides at dead lever (6) are installed in injection molding (51), the middle part at injection molding (51) is seted up in runner (52), the both sides at runner (52) are seted up in runner (53), communicate between runner (53) and runner (52), runner (53) are close to the one end department of going up mould (3), lower mould (4) and are provided with from cutting mechanism (10).

2. The injection mold with self-shear gate for the production of PVC pipe as claimed in claim 1, wherein: self-shearing mechanism (10) is including activity groove (101), division board (102), spring (103), the upper end at the inboard runner (53) of injection molding (51) is seted up in activity groove (101), there is connecting rod (104) inboard upper end in activity groove (101) through round pin axle movable mounting, install between the upper end of connecting rod (104) and activity groove (101) spring (103), one side that the lower extreme at connecting rod (104) is close to spring (103) is installed in division board (102), there is moving part (105) one side that division board (102) were kept away from in connecting rod (104) through round pin axle movable mounting.

3. The injection mold with self-shear gate for the production of PVC pipe as claimed in claim 1, wherein: the upper end mounting seat of the mounting part (7) is fixedly provided with a motor (11), and the output shaft end of the motor (11) is in transmission connection with a rotating shaft where the double-head screw (9) is located through a coupler.

4. The injection mold with self-shear gate for the production of PVC pipe as claimed in claim 1, wherein: the gate (53) is a submarine gate (53).

5. The injection mold with self-shear gate for the production of PVC pipe as claimed in claim 1, wherein: go up and fix through fixed establishment (12) between mould (3) and lower mould (4), fixed establishment (12) are including adjusting pole (121), fixed cardboard (122), fastening bolt (123), adjust pole (121) and install between last mould (3) and lower mould (4), two fixed cardboard (122) are established respectively at the both ends of adjusting pole (121), fastening bolt (123) are installed between fixed cardboard (122) and are adjusted pole (121).