Plug type feeding system of injection molding machine

Abstract

The utility model provides a plug type feeding system of an injection molding machine, which belongs to the technical field of injection molding equipment, and comprises a feeding barrel, a feeding cavity is formed in the feeding barrel, and a heating piece is further arranged on the feeding barrel; the material pushing rod is arranged in the feeding cavity, and the material pushing rod can do linear reciprocating motion in the feeding cavity; the connecting plate is arranged close to the discharging opening of the feeding barrel, a connecting cavity is formed in the connecting plate, and the connecting cavity communicates with the feeding cavity and the pushing system; the material distributing shuttle is movably arranged in the feeding cavity; the material pushing device has the advantages that the material pushing rod is used for pushing and feeding powder in the injection molding machine, the mixing degree of the two kinds of powder in the feeding process can be reduced, mutual independence of the two kinds of powder can be kept, it is avoided that the two kinds of powder are excessively mixed to form one color, and color-mixed finished products with different-color spots or different-color areas on the outer surfaces can be conveniently and finally formed; the diversity of injection molding products is improved, meanwhile, the injection molding process is reduced, and the injection molding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding equipment, in particular to an embolic feeding system of an injection molding machine. Background Art

[0002] Plastic is a polymer compound made of monomers through addition polymerization or condensation polymerization. It has a medium deformation resistance, between fiber and rubber. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Injection molding is a plastic molding process. The injection molding machine uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics.

[0003] The feeding method in the existing injection molding machine is mostly to use a screw for spiral feeding, such as a split injection machine disclosed in patent number CN216068563U, which can ensure the full mixing of powders of different colors while feeding, so that a new color is formed. It has a fast feeding speed and good mixing effect, and is widely used. However, for the preparation of finished products that do not require full mixing of some colors, such as the production of products with different color spots on the appearance, two feeding systems are required to heat and melt the powders of different colors separately and then merge them into the nozzle for injection. The injection molding efficiency is low and the production cost is also relatively high. Now a new feeding device is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a feeding system for embolic feeding.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an embolic feeding system for an injection molding machine, comprising:

[0006] A feeding cylinder, in which a feeding cavity is provided, and a heating element is also provided on the feeding cylinder;

[0007] A push rod, which is arranged in the feeding cavity and can perform linear reciprocating movement in the feeding cavity;

[0008] A connecting plate is arranged near the discharge port of the feeding cylinder, wherein a connecting cavity is arranged in the connecting plate, and the connecting cavity is respectively connected with the feeding cavity and the pushing system;

[0009] The material distribution shuttle is movably arranged in the feeding cavity, and when the pushing rod pushes the material, the material distribution shuttle is close to the discharge port of the feeding cavity, and its end is against the connecting plate.

[0010] In the above-mentioned embolic feeding system of an injection molding machine, the material distribution shuttle includes a cylindrical shuttle body, and along the length direction of the shuttle body, the vertical cross-sectional area of ​​the shuttle body increases step by step, and a plurality of diversion grooves are arranged on the outer wall of the rough head end of the shuttle body at intervals, and a junction block is also arranged at the end of the rough head end, and a plurality of junction grooves extending outward from the center and connected to the diversion grooves are arranged on the junction block, and the connecting cavity is connected to the center of the junction block.

[0011] In the above-mentioned plug feeding system of an injection molding machine, the outer edge of the manifold block is a slope, and a conical connecting hole is opened in the connecting plate. The connecting hole is respectively connected with the connecting cavity and the feeding cavity, and when the pushing rod pushes the material toward the discharge port, the slope on the manifold block abuts against the inner wall of the connecting hole.

[0012] In the above-mentioned plug feeding system of an injection molding machine, the outer wall edge area of ​​the manifold block is smaller than the outer wall edge area of ​​the rough head end of the shuttle body, and when the manifold block abuts against the inner wall of the connecting hole, a flow channel is formed between the outer edge of the manifold block and the inner wall of the connecting hole.

[0013] In the above-mentioned embolic feeding system of an injection molding machine, the connecting plate and the feeding barrel are detachably connected, and an abutting slope is provided on the outer wall of the connecting plate. The feeding barrel is inclined so that its end abuts against the abutting slope, and a step surface is formed between the upper end of the abutting slope and the connecting plate. When the end face of the feeding barrel abuts against the connecting plate, the upper edge of the end of the feeding barrel abuts against the step surface.

[0014] In the above-mentioned plug feeding system of an injection molding machine, heating rods are arranged in the connecting plate, the number of the heating rods is two, and the two heating rods are symmetrically arranged around the connecting cavity.

[0015] In the above-mentioned embolic feeding system of an injection molding machine, a connecting bracket is provided on the feeding barrel, a driving member is provided on the connecting bracket, and the driving member and the pushing rod are detachably connected, a connecting cavity is provided in the connecting bracket, and the pushing rod can move between the feeding cavity and the connecting cavity, and a drop rod groove is provided on the cavity wall of the connecting bracket, and the length of the drop rod groove is greater than the length of the pushing rod, and when the driving member drives the pushing rod to move to the drop rod groove, the connection between the pushing rod and the driving member is disconnected, and the pushing rod can be moved out from the drop rod groove.

[0016] In the above-mentioned embolic feeding system of an injection molding machine, the transmission shaft of the driving member is provided with a connecting rod, the push rod is provided with a connecting groove, the connecting rod extends into the connecting groove, and a positioning pin is provided on the connecting rod. The positioning pin passes through the push rod and the connecting rod to fix the push rod and the connecting rod, and makes the push rod and the transmission shaft detachable.

[0017] In the above-mentioned plug feeding system of an injection molding machine, a ventilation hole is provided at the upper end of the connecting plate and communicated with the connecting cavity, and a ventilation portion is fixedly provided in the ventilation hole.

[0018] In the above-mentioned embolic feeding system of an injection molding machine, the air-permeable through hole includes a mounting countersunk hole and a connecting hole, a air-permeable screw is threadedly provided in the connecting hole, the air-permeable portion is located in the mounting countersunk hole, and the air-permeable screw abuts against the upper end of the air-permeable portion.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) Using a push rod to push the powder in the injection molding machine to feed the powder, compared with the existing screw rolling mixing feeding method, it can reduce the mixing degree of the two powders during the feeding process, keep the two powders independent of each other, avoid their transitional mixing to form one color, and finally form a mixed color product with different color spots or different color areas on the outer surface, increase the diversity of injection molded products, reduce the injection molding process, and increase the injection molding efficiency;

[0021] (2) The shuttle body gradually increases in size, so that the powder gradually approaches the inner wall of the heated feeding tube, the powder gradually melts and the pressure gradually increases under the push of the push rod, accelerating the melting;

[0022] (3) The setting of the diverter trough can make a part of the resin flow towards the discharge port at a position slightly away from the inner wall of the barrel, avoiding excessive fusion that turns the two colors of resin into a neutral color. It can also avoid the situation where the two colors of powder are not fully melted and the "raw material" is generated.

[0023] (4) The setting of the drop rod groove allows the push rod to be directly taken out from the feed barrel without disconnecting the driving member from the feed barrel, which is convenient for cleaning and maintenance of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram of ;

[0026] Figure 3yes Figure 2 A local enlarged schematic diagram of the middle A;

[0027] Figure 4 yes Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the material-dividing shuttle in the utility model;

[0029] Figure 6 Schematic diagram of the cross-sectional structure of the connecting plate;

[0030] Figure 7 It is a schematic diagram of the assembly connection between the utility model and the material pushing system.

[0031] In the figure, there are a feeding barrel 100; a feeding chamber 101; a pushing rod 102; a connecting plate 103; a connecting chamber 104; a dividing shuttle 105; a heating block 106; a shuttle body 107; a diverter groove 108; a confluence block 109; a confluence groove 110; a connecting hole 111; a flow channel 112; abutting inclined surface 113; a step surface 114; a connecting bracket 115; a drop rod groove 116; a positioning pin 117; a connecting rod 118; a connecting groove 119; a ventilating portion 120; a ventilating screw 121; a heating rod 122; a driving member 123; and a transmission shaft 124. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] like Figure 1-Figure 7 As shown, a plug feeding system for an injection molding machine comprises:

[0035] A feeding barrel 100 is provided with a feeding cavity 101 therein, and a heating element is also provided on the feeding barrel 100;

[0036] A push rod 102 is disposed in the feeding cavity 101 and can perform linear reciprocating movement in the feeding cavity 101;

[0037] A connecting plate 103 is provided near the discharge port of the feeding barrel 100, and a connecting cavity 104 is provided in the connecting plate 103, and the connecting cavity 104 is respectively connected to the feeding cavity 101 and the pushing system;

[0038] The material distribution shuttle 105 is movably arranged in the feeding cavity 101 , and when the pushing rod 102 pushes the material, the material distribution shuttle 105 is close to the discharge port of the feeding cavity 101 , and its end is against the connecting plate 103 .

[0039] In this embodiment, the push rod 102 is used to push the powder in the injection molding machine to feed it. Compared with the existing screw rolling mixing feeding method, it can reduce the mixing of multiple powders during the feeding process, keep the two powders independent of each other, avoid their transitional mixing to form one color, and facilitate the final formation of a finished product with spots or different color areas on the outer surface, increase the diversity of injection molded products, reduce the injection molding process, and increase injection molding efficiency.

[0040] It is worth mentioning that the heating element includes a heating block 106 arranged on the outer wall of the feeding cylinder 100 .

[0041] like Figure 5 As shown, specifically, the material distribution shuttle 105 includes a cylindrical shuttle body 107, and along the length direction of the shuttle body 107, the vertical cross-sectional area of ​​the shuttle body 107 increases step by step, and a plurality of diverter grooves 108 are arranged on the outer wall of the rough end of the shuttle body 107 at intervals, and a junction block 109 is also arranged at the end of the rough end, and the junction block 109 is provided with a plurality of junction grooves 110 extending outward from the center and connected with the diverter grooves 108, and the connecting cavity 104 is connected with the center of the junction block 109.

[0042] In this embodiment, the shuttle body 107 is gradually enlarged, so that the powder gradually approaches the inner wall of the heated feeding barrel 100, the powder gradually melts and the pressure gradually increases under the push of the push rod 102, thereby accelerating the melting; the setting of the diverter groove 108 can make a part of the resin flow toward the discharge port at a position slightly away from the inner wall of the barrel, avoiding excessive fusion that turns the two colors of resin into a neutral color, and also avoiding the situation where the two colors of powder are not fully melted to produce "raw materials".

[0043] Further preferably, the outer edge of the manifold block 109 is a slope, and a conical connecting hole 111 is opened in the connecting plate, the connecting hole 111 is respectively connected to the connecting cavity 104 and the feeding cavity 101, and when the pushing rod 102 pushes the material toward the discharge port, the slope on the manifold block 109 abuts against the inner wall of the connecting hole 111.

[0044] In this embodiment, the inclined surface of the manifold block 109 abuts against the inner wall of the connecting hole 111, so that a channel is formed between the manifold groove 110 on the manifold block 109 and the inner wall for feeding. The powder after diversion and heating by the diversion groove 108 is collected at the diversion groove 110 and then flows into the connecting cavity 104.

[0045] Further preferably, the outer wall edge area of ​​the manifold block 109 is smaller than the outer wall edge area of ​​the rough end of the shuttle body 107 , and when the manifold block 109 abuts against the inner wall of the connecting hole 111 , a flow channel 112 is formed between the outer edge of the manifold block 109 and the inner wall of the connecting hole 111 .

[0046] In this embodiment, the quantity relationship and position relationship between the diverter grooves 108 and the confluence grooves 110 do not need to correspond one to one. Therefore, in order to ensure that the powder in the diverter grooves 108 flows to the confluence grooves 110 as quickly as possible, the outer wall edge area of ​​the confluence block 109 is designed to be smaller than the outer wall edge area of ​​the rough head end. When the confluence block 109 abuts against the inner wall of the connecting hole 111, a flow channel 112 is formed between the outer edge of the confluence block 109 and the inner wall of the connecting hole 111, and the powder in the diverter grooves 108 first flows to the flow channel 112 and then flows to the confluence grooves 110 for confluence.

[0047] like Figure 3 As shown, preferably, the connection between the connecting plate 103 and the feeding barrel 100 is detachably connected, and an abutting slope 113 is provided on the outer wall of the connecting plate 103. The feeding barrel 100 is tilted so that its end abuts against the abutting slope 113, and a step surface 114 is formed between the upper end of the abutting slope 113 and the connecting plate 103. When the end face of the feeding barrel 100 abuts against the connecting plate 103, the upper edge of the end of the feeding barrel 100 abuts against the step surface 114.

[0048] It is worth mentioning that a connecting bolt is threadedly connected to the connecting plate 103. When the end face of the feeding barrel 100 abuts against the connecting plate 103, the connecting bolt is threadedly connected to the feeding barrel 100 to fix the feeding barrel 100 and the connecting plate 103. The feeding barrel 100 and the connecting plate 103 are also detachable, which is convenient for cleaning and maintenance of the feeding shuttle 105 in the feeding barrel 100.

[0049] In this embodiment, in order to ensure smooth transportation of powder in the feeding barrel 100, the feeding barrel 100 is designed to be inclined, and in order to ensure the sealed abutment between the feeding barrel 100 and the connecting plate 103, an abutment slope 113 is provided on the connecting plate 103 to cooperate with the inclined feeding barrel 100; in order to ensure accurate connection and positioning between the connecting plate 103 and the feeding barrel 100, a step surface 114 is formed between the upper end of the abutment slope 113 and the connecting plate 103, so that the feeding barrel 100 can be positioned and installed.

[0050] like Figure 6 As shown, further preferably, a heating rod 122 is disposed in the connecting plate 103 , and the number of the heating rods 122 is two, and the two heating rods 122 are symmetrically disposed around the connecting cavity 104 .

[0051] In this embodiment, when the heated and mixed powder flows to the pushing system through the connecting chamber 104, in order to ensure that the powder does not cool down and solidify in the connecting chamber 104 and affect the flow rate, a heating rod 122 is also provided in the connecting plate 103 to continuously heat the powder; preferably, the heating rod 122 is provided at the bottom of the connecting plate 103, and part of the heating rod 122 extends into the pushing system.

[0052] like Figure 1 , Figure 2 and Figure 4 As shown, it is further preferred that a connecting bracket 115 is provided on the feeding barrel 100, and a driving member 123 is provided on the connecting bracket 115, and the driving member 123 and the pushing rod 102 are detachably connected, a connecting cavity 104 is provided in the connecting bracket 115, and the pushing rod 102 can move between the feeding cavity 101 and the connecting cavity 104, and a drop rod groove 116 is provided on the cavity wall of the connecting bracket 115, and the length of the drop rod groove 116 is greater than the length of the pushing rod 102. When the driving member 123 drives the pushing rod 102 to move to the drop rod groove 116, the connection between the pushing rod 102 and the driving member 123 is disconnected, and the pushing rod 102 can be moved out from the drop rod groove 116.

[0053] In this embodiment, the provision of the rod drop groove 116 allows the push rod 102 to be directly removed from the feed barrel 100 without disconnecting the drive member 123 from the feed barrel 100 , thereby facilitating cleaning and maintenance of the push rod 102 .

[0054] Specifically, a connecting rod 118 is provided at the transmission shaft 124 of the driving member 123, and a connecting groove 119 is provided at the pushing rod 102. The connecting rod 118 extends into the connecting groove 119, and a positioning pin 117 is provided on the connecting rod 118. The positioning pin 117 passes through the pushing rod 102 and the connecting rod 118 to fix the pushing rod 102 and the connecting rod 118, and makes the pushing rod 102 and the transmission shaft 124 detachable.

[0055] In this embodiment, when the push rod 102 needs to be moved out, the driving member 123 drives the push rod 102 to move to the drop rod groove 116. It is preferably designed that when the transmission shaft 124 of the driving member 123 is in the initial position, the push rod 102 is located at the drop rod groove 116, and the positioning pin 117 is released to disconnect the connection between the transmission shaft 124 and the push rod 102, so that the push rod 102 falls from the drop rod groove 116. In order to facilitate the disassembly and installation of the positioning pin 117, an operating groove is opened above the drop rod groove 116 to facilitate the operation of the operating tool into the connecting bracket 115 for operation.

[0056] Preferably, a ventilation hole is formed at the upper end of the connecting plate 103 to communicate with the connecting cavity 104 , and a ventilation portion 120 is fixedly disposed in the ventilation hole.

[0057] In this embodiment, the air permeable portion 120 can be made of some existing air permeable steel to isolate the powder while ensuring the air permeability. By providing the air permeable portion 120, the air in the heated powder is discharged.

[0058] Further preferably, the ventilation hole includes a mounting countersunk hole and a connecting hole 111 , a ventilation screw 121 is threadedly provided in the connecting hole 111 , the ventilation portion 120 is located in the mounting countersunk hole, and the ventilation screw 121 abuts against the upper end of the ventilation portion 120 .

[0059] In this embodiment, the vent screw 121 can be realized by opening a through hole on the bolt of an existing screw, thereby fixing the vent portion 120 and ensuring smooth discharge of gas.

[0060] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0061] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0062] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A plug feeding system for an injection molding machine, characterized in that: include: A feeding cylinder, in which a feeding cavity is provided, and a heating element is also provided on the feeding cylinder; A push rod, which is arranged in the feeding cavity and can perform linear reciprocating movement in the feeding cavity; A connecting plate is arranged near the discharge port of the feeding cylinder, wherein a connecting cavity is arranged in the connecting plate, and the connecting cavity is respectively connected with the feeding cavity and the pushing system; The material distribution shuttle is movably arranged in the feeding cavity, and when the pushing rod pushes the material, the material distribution shuttle is close to the discharge port of the feeding cavity, and its end is against the connecting plate.

2. The plug feeding system of an injection molding machine according to claim 1, characterized in that: The material distribution shuttle includes a cylindrical shuttle body, and along the length direction of the shuttle body, the vertical cross-sectional area of ​​the shuttle body increases step by step, a plurality of diversion grooves are arranged on the outer wall of the rough head end of the shuttle body at intervals, and a junction block is also arranged at the end of the rough head end, and a plurality of junction grooves extending outward from the center and connected to the diversion grooves are arranged on the junction block, and the connecting cavity is connected to the center of the junction block.

3. The plug feeding system of an injection molding machine according to claim 2, characterized in that: The outer edge of the junction block is a slope, and a conical connecting hole is opened in the connecting plate. The connecting holes are respectively connected to the connecting cavity and the feeding cavity. When the pushing rod pushes the material toward the discharge port, the slope on the junction block abuts against the inner wall of the connecting hole.

4. The plug feeding system of an injection molding machine according to claim 3, characterized in that: The outer wall edge area of ​​the manifold block is smaller than the outer wall edge area of ​​the rough end of the shuttle body. When the manifold block abuts against the inner wall of the connecting hole, a flow channel is formed between the outer edge of the manifold block and the inner wall of the connecting hole.

5. The plug feeding system of an injection molding machine according to claim 1, characterized in that: The connecting plate and the feeding barrel are detachably connected, and an abutment slope is provided on the outer wall of the connecting plate. The feeding barrel is inclined so that its end abuts against the abutment slope, and a step surface is formed between the upper end of the abutment slope and the connecting plate. When the end face of the feeding barrel abuts against the connecting plate, the upper edge of the end of the feeding barrel abuts against the step surface.

6. The plug feeding system of an injection molding machine according to claim 1, characterized in that: A heating rod is arranged in the connecting plate, the number of the heating rods is two, and the two heating rods are symmetrically arranged around the connecting cavity.

7. The plug feeding system of an injection molding machine according to claim 1, characterized in that: The feeding barrel is provided with a connecting bracket, and a driving member is provided on the connecting bracket, and the driving member and the pushing rod are detachably connected, a connecting cavity is provided in the connecting bracket, and the pushing rod can move between the feeding cavity and the connecting cavity, and a falling rod groove is provided on the cavity wall of the connecting bracket, and the length of the falling rod groove is greater than the length of the pushing rod. When the driving member drives the pushing rod to move to the falling rod groove, the connection between the pushing rod and the driving member is disconnected, and the pushing rod can be moved out from the falling rod groove.

8. The plug feeding system of an injection molding machine according to claim 7, characterized in that: The transmission shaft of the driving member is provided with a connecting rod, and the push rod is provided with a connecting groove. The connecting rod extends into the connecting groove, and a positioning pin is provided on the connecting rod. The positioning pin passes through the push rod and the connecting rod to fix the push rod and the connecting rod, and makes the push rod and the transmission shaft detachable.

9. The plug feeding system of an injection molding machine according to claim 1, characterized in that: A ventilation hole is provided at the upper end of the connecting plate and is communicated with the connecting cavity, and a ventilation part is fixedly arranged in the ventilation hole.

10. The plug feeding system of an injection molding machine according to claim 9, characterized in that: The vent hole comprises a mounting countersunk hole and a connecting hole, a vent screw is threadedly arranged in the connecting hole, the vent portion is located in the mounting countersunk hole, and the vent screw abuts against an upper end portion of the vent portion.

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