A raw material conveying device for injection molding machine

Abstract

The present invention belongs to the technical field of injection molding machine equipment, and discloses a raw material conveying device for an injection molding machine, and its technical key points are: comprising a melt box, a feed barrel is fixedly installed on the surface of the melt box, a feed hopper is fixedly installed on the top of the feed barrel, a partition is fixedly installed in the feed hopper, the partition divides the inner cavity of the feed funnel into a batching cavity and a raw material cavity, a discharge port connected to the melt box is downwardly opened on the bottom wall of the feed barrel, an intermittent feeding component is arranged in the feed barrel, a quantitative mixing mechanism cooperating with a feed roller is arranged on the side wall of the feed barrel, the quantitative mixing mechanism comprises a sealing component and an automatic guide assembly, which solves the problem that the current conveying method cannot make additives such as color powder and molten plastic fully contact and mix, the additives and materials are not mixed evenly, and the discharged finished product cannot achieve the predetermined effect.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine equipment, in particular to a raw material conveying device for an injection molding machine. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity.

[0003] The injection molding machine needs to add additives such as color powder to the raw material during injection molding. The current conveying equipment generally puts the raw material directly into the melt cavity for melting, and then manually puts the color powder and other additives into the molten plastic. When using this existing conveying method, the color powder and other additives cannot be fully contacted and mixed with the molten plastic, and the additives and materials are not mixed evenly, which can easily lead to the finished product failing to achieve the desired effect. Summary of the invention

[0004] The object of the present invention is to provide a raw material conveying device for an injection molding machine to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A raw material conveying device for an injection molding machine comprises a melt box, a feed barrel is fixedly mounted on the surface of the melt box, a feed hopper is fixedly mounted on the top of the feed barrel, a partition is fixedly mounted inside the feed hopper, the partition separates the inner cavity of the feed hopper into a batching cavity and a raw material cavity, a discharge port connected to the melt box is downwardly provided on the bottom wall of the feed barrel, a first feed port connected to the raw material cavity is provided on the surface of the feed barrel, a second feed port connected to the batching cavity is provided on the surface of the feed barrel, an intermittent unloading component is arranged in the feed barrel, the intermittent unloading component comprises a feed roller rotatably mounted in the feed barrel, a material guide cavity is provided on the surface of the feed roller, and both ends of the feed roller are respectively fixed A rotating rod is installed, which is rotatably connected to the side wall of the feed barrel, and a control box is fixedly installed on the outside of the melt box and the feed funnel. The end of the rotating rod away from the feed roller extends into the control box and is connected to a motor. The side wall of the feed barrel is provided with a quantitative mixing mechanism that cooperates with the feed roller. The quantitative mixing mechanism includes a sealing component and an automatic guide component. The sealing component is located in the second feed port, and the sealing component is used to control the second feed port to be in a closed state. The automatic guide component is located in the guide cavity and is connected to the sealing component. The automatic guide component controls the intermittent conversion of the second feed port to a through state by cooperating with the sealing component.

[0007] As a further solution of the present invention: the sealing assembly includes a telescopic cavity opened inside the side wall of the feeding barrel and located on one side of the second feed port, a sliding block is slidably installed in the telescopic cavity, an extrusion spring is fixedly installed at the top of the telescopic cavity, the telescopic end of the extrusion spring is connected to the sliding block, and a sealing plate is fixedly installed on the side wall of the sliding block facing the second feed port, the sealing plate extends through the telescopic cavity into the second feed port, and the sealing plate is in contact with the side wall of the second feed port.

[0008] As a further solution of the present invention: the automatic guide assembly includes a control strip arranged on a side wall of the sealing plate facing the feed roller, the control strip is made of magnetic material, a magnetic strip that cooperates with the control strip is fixedly installed on the surface of the guide cavity, and a positioning portion connected to the control strip is arranged on the side wall of the sealing plate, and the positioning portion is used to adjust the position of the control strip on the side wall of the sealing plate.

[0009] As a further solution of the present invention: the positioning part includes brackets fixedly installed at both ends of the control strip, fixing bolts are arranged on the surface of the brackets, and a plurality of positioning screw holes distributed at equal intervals and cooperating with the fixing bolts are opened on the surface of the sealing plate.

[0010] As a further solution of the present invention: a stirring and feeding mechanism is arranged in the feeding funnel, and the stirring and feeding mechanism includes a stirring component and a transmission component. The stirring component is located in the batching chamber and the raw material chamber, and the stirring component is used to stir the materials in the batching chamber and the raw material chamber, and the transmission component is connected to the stirring component.

[0011] As a further solution of the present invention: the stirring assembly includes rotating rods rotatably installed in the batching chamber and the raw material chamber respectively, the rotating rods in the batching chamber and the raw material chamber are respectively located above the second feed port and the first feed port, and a plurality of groups of evenly distributed stirring rods are arranged on the surface of the rotating rods.

[0012] As a further solution of the present invention: the transmission assembly includes a transmission gear plate with one end of a rotating rod extending into the control box and fixedly installed, a transmission gear plate is fixedly installed on the surface of the rotating rod, and multiple groups of transmission gear plates are commonly connected with a transmission belt.

[0013] As a further solution of the present invention: a plurality of groups of support rods are fixedly installed on the surface of the melt box, and the top ends of the plurality of groups of support rods are respectively connected to the feeding funnel.

[0014] Compared with the prior art, the invention has the following beneficial effects: by setting an intermittent feeding assembly composed of a feeding roller, a material guide cavity, a rotating rod, a control box, and a motor to cooperate with the feeding cylinder, the intermittent feeding of materials in the raw material cavity can be quantitatively controlled; by setting a sealing assembly to cooperate with an automatic guide assembly, the additives in the batching cavity can be quantitatively controlled to be fully mixed with the materials in the raw material cavity, effectively improving the quality of the molten plastic. This solves the problem that the current conveying method cannot fully contact and mix additives such as color powder with molten plastic, and the additives and materials are not mixed evenly, which easily leads to the unsatisfactory effect of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a raw material conveying device for an injection molding machine provided in an embodiment of the present invention Figure 1 .

[0016] Figure 2 A schematic diagram of the three-dimensional structure of a raw material conveying device for an injection molding machine provided in an embodiment of the present invention Figure 2 .

[0017] Figure 3 This is a schematic diagram of the main structure of a raw material conveying device for an injection molding machine provided in an embodiment of the present invention.

[0018] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of A.

[0019] Figure 5 The present invention is a schematic structural diagram of a material conveying cylinder in a raw material conveying device of an injection molding machine provided in an embodiment of the present invention.

[0020] Figure 6 The present invention is a schematic structural diagram of a feed roller in a raw material conveying device for an injection molding machine provided in an embodiment of the present invention.

[0021] Among them: 1-melting box, 2-feeding cylinder, 21-discharging port, 22-first feed port, 23-second feed port, 3-feeding funnel, 31-partition, 32-dosing chamber, 33-raw material chamber, 4-intermittent feeding assembly, 41-feeding roller, 42-guiding chamber, 43-rotating rod, 44-control box, 45-motor, 5-quantitative mixing mechanism, 51-sealing assembly, 511-telescopic chamber, 512-extrusion spring, 513-sliding block, 514-sealing plate, 52-automatic guiding assembly, 521-control strip, 522-magnetic strip, 6-positioning part, 61-bracket, 62-fixing bolt, 63-positioning screw hole, 7-stirring and feeding mechanism, 71-stirring assembly, 711-rotating rod, 712-stirring rod, 72-transmission assembly, 721-transmission gear disc, 722-transmission belt, 8-support rod. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The figure is a structural diagram of a raw material conveying device for an injection molding machine provided by an embodiment of the present invention, comprising a melt box 1, a feed barrel 2 is fixedly mounted on the surface of the melt box 1, a feed hopper 3 is fixedly mounted on the top of the feed barrel 2, a partition 31 is fixedly mounted inside the feed hopper 3, the partition 31 divides the inner cavity of the feed hopper 3 into a batching cavity 32 and a raw material cavity 33, a discharge port 21 connected to the melt box 1 is downwardly opened on the bottom wall of the feed barrel 2, a first feed port 22 connected to the raw material cavity 33 is opened on the surface of the feed barrel 2, a second feed port 23 connected to the batching cavity 32 is opened on the surface of the feed barrel 2, an intermittent unloading component 4 is arranged in the feed barrel 2, the intermittent unloading component 4 includes a feed roller 41 rotatably mounted in the feed barrel 2, a material guide cavity 42 is opened on the surface of the feed roller 41, and a feed roller 41 is provided with a feed guide cavity 42. Rotating rods 43 are fixedly installed at both ends of 41, and the rotating rods 43 are rotatably connected to the side walls of the feed barrel 2. A control box 44 is fixedly installed on the outside of the melt box 1 and the feed funnel 3. One end of the rotating rod 43 away from the feed roller 41 extends into the control box 44 and is connected to a motor 45. The side wall of the feed barrel 2 is provided with a quantitative mixing mechanism 5 that cooperates with the feed roller 41. The quantitative mixing mechanism 5 includes a sealing component 51 and an automatic guide component 52. The sealing component 51 is located in the second feed port 23, and the sealing component 51 is used to control the second feed port 23 to be in a closed state. The automatic guide component 52 is located in the guide cavity 42 and is connected to the sealing component 51. The automatic guide component 52 controls the intermittent conversion of the second feed port 23 to a through state by cooperating with the sealing component 51.

[0025] When in use, the raw material is placed in the raw material cavity 33, and the additive is placed in the mixing cavity 32. Initially, the feed roller 41 controls the first feed port 22 to be in a closed state, and the sealing component 51 controls the second feed port 23 to be in a closed state. When the raw material needs to be conveyed and discharged, the motor 45 drives the rotating rod 43 to rotate and then drives the feed roller 41 to rotate synchronously in the feed barrel 2. When the guide cavity 42 on the surface of the feed roller 41 rotates to a position opposite to the first feed port 22, the raw material in the raw material cavity 33 passes through the first feed port 22 and automatically falls into the guide cavity 42. The guide cavity 42 continues to rotate. When the guide cavity 42 rotates to a position opposite to the discharge port 21, the raw material in the guide cavity 42 passes through the discharge port 21 under the action of gravity and falls into the melt box 1. The feed roller 41 rotates continuously to control the intermittent feeding of raw materials. The feed roller 41 rotates continuously, and when the guide cavity 42 rotates to a position opposite to the second feed port 23, the automatic guide assembly 52 cooperates with the sealing assembly 51 to control the second feed port 23 to automatically switch to a through state, and the additive in the batching cavity 32 passes through the second feed port 23 and can automatically fall into the guide cavity 42. An appropriate amount of additives and raw materials are fully mixed in the guide cavity, which can effectively improve the melting effect of the material in the melt box 1.

[0026] like Figure 3 , Figure 4 , Figure 5 As shown, as a preferred embodiment of the present invention, the sealing assembly 51 includes a telescopic cavity 511 opened inside the side wall of the feeding barrel 2 and located on one side of the second feed port 23, a sliding block 513 is slidably installed in the telescopic cavity 511, an extrusion spring 512 is fixedly installed at the top of the telescopic cavity 511, the telescopic end of the extrusion spring 512 is connected to the sliding block 513, and a sealing plate 514 is fixedly installed on a side wall of the sliding block 513 facing the second feed port 23, the sealing plate 514 extends through the telescopic cavity 511 into the second feed port 23, and the sealing plate 514 is in contact with the side wall of the second feed port 23.

[0027] Initially, the extrusion spring 512 applies thrust to the sliding block 513, and the sliding block 513 applies thrust to the sealing plate 514. At this time, the sealing plate 514 is entirely in the second feed port 23, and the sealing plate 514 controls the second feed port 23 to be in a sealed state. The feed roller 41 rotates in the feed barrel 2. When the guide cavity 42 rotates to a position opposite to the second feed port 23, the automatic guide assembly 52 cooperates with the rotating feed roller 41 to push the sealing plate 514 to move toward the telescopic cavity 511. At this time, the second feed port 23 is converted to an open state, and the additive in the batching cavity 32 can automatically fall into the guide cavity 42. The feed roller 41 continues to rotate, and the automatic guide assembly 52 releases the pulling of the sealing plate 514. The sealing plate 514 moves back to the second feed port 23 under the thrust of the extrusion spring 512.

[0028] like Figure 3 , Figure 4 , Figure 6 As shown, as a preferred embodiment of the present invention, the automatic guide assembly 52 includes a control strip 521 arranged on a side wall of the sealing plate 514 facing the feed roller 41, the control strip 521 is made of magnetic material, a magnetic strip 522 cooperating with the control strip 521 is fixedly mounted on the surface of the guide cavity 42, and a positioning portion 6 connected to the control strip 521 is arranged on the side wall of the sealing plate 514, and the positioning portion 6 is used to adjust the position of the control strip 521 on the side wall of the sealing plate 514.

[0029] The feed roller 41 drives the guide chamber 42 to rotate synchronously, and the guide chamber 42 drives the magnetic strip 522 to move synchronously. When the guide chamber 42 rotates to a position opposite to the second feed port 23, the magnetic strip 522 and the control strip 521 fit each other, and the magnetic strip 522 is connected to the control strip 521 as a whole through magnetic attraction. When the magnetic strip 522 rotates, it cooperates with the control strip 521 to push the sealing plate 514 to move toward the telescopic chamber 511. At this time, the second feed port 23 is converted to an open state, and the additive can automatically fall into the guide chamber 42. The feed roller 41 continues to rotate, and the magnetic strip 522 is separated from the control strip 521. The sealing plate 514 moves back to the second feed port 23 under the thrust of the extrusion spring 512, and the second feed port 23 is converted to a sealed state again.

[0030] like Figure 3 , Figure 4 As shown, as a preferred embodiment of the present invention, the positioning portion 6 includes brackets 61 fixedly installed at both ends of the control strip 521, fixing bolts 62 are arranged on the surface of the bracket 61, and a plurality of positioning screw holes 63 are opened on the surface of the sealing plate 514 and are evenly spaced and cooperate with the fixing bolts 62.

[0031] When in use, the position of the control strip 521 can be conveniently adjusted on the surface of the sealing plate 514 by cooperating with the positioning screw hole 63 and the fixing bolt 62, and then the range of movement of the control strip 521 and the magnetic strip 522 can be adjusted, and then the range of movement of the sealing plate 514 can be conveniently adjusted, and the opening size of the second feed port 23 can be automatically adjusted, and then the amount of additive discharged into the dosing chamber 32 can be adjusted.

[0032] like Figure 1 , Figure 2 , Figure 3As shown, as a preferred embodiment of the present invention, a stirring and feeding mechanism 7 is provided in the feeding funnel 3, and the stirring and feeding mechanism 7 includes a stirring component 71 and a transmission component 72. The stirring component 71 is located in the batching chamber 32 and the raw material chamber 33. The stirring component 71 is used to stir the materials in the batching chamber 32 and the raw material chamber 33, and the transmission component 72 is connected to the stirring component 71.

[0033] When the additives in the batching chamber 32 and the raw materials in the raw material chamber 33 fall from the second feed port 23 and the first feed port 22 respectively, the materials are easily blocked by the static friction and adhesion force of the first feed port 22 and the second feed port 23. During the feeding process, the transmission component 72 and the stirring component 71 cooperate with each other to destroy the equilibrium state of the materials at the first feed port 22 and the second feed port 23, so as to facilitate the falling of the materials at the first feed port 22 and the second feed port 23.

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, as a preferred embodiment of the present invention, the stirring assembly 71 includes a rotating rod 711 rotatably installed in the batching chamber 32 and the raw material chamber 33 respectively, the rotating rod 711 in the batching chamber 32 and the raw material chamber 33 are respectively located above the second feed port 23 and the first feed port 22, and a plurality of groups of evenly distributed stirring rods 712 are arranged on the surface of the rotating rod 711.

[0035] When unloading, the transmission assembly 72 drives the rotating rod 711 in the batching chamber 32 and the raw material chamber 33 to rotate, and the rotating rod 711 drives the stirring rod 712 to rotate synchronously. The stirring rod 712 can effectively destroy the equilibrium state of the material at the first feed port 22 and the second feed port 23, making it easier for the material to fall at the first feed port 22 and the second feed port 23.

[0036] like Figure 1 , Figure 2 , Figure 3 As shown, as a preferred embodiment of the present invention, the transmission assembly 72 includes a transmission sprocket 721 with one end of a rotating rod 711 extending into the control box 44 and fixedly installed, a transmission sprocket 721 is fixedly installed on the surface of the rotating rod 43, and multiple groups of transmission sprockets 721 are commonly connected with a transmission belt 722.

[0037] The motor 45 drives the rotating rod 43 to rotate and then drives the transmission gear plate 721 to rotate synchronously. The multiple sets of transmission gear plates 721 and the transmission belt 722 cooperate with each other to drive the rotating rod 711 to rotate synchronously.

[0038] like Figure 1 , Figure 3As shown, as a preferred embodiment of the present invention, a plurality of support rods 8 are fixedly mounted on the surface of the melt box 1, and the top ends of the plurality of support rods 8 are respectively connected to the feeding funnel 3. The support rods 8 can effectively improve the stability of the feeding funnel 3.

[0039] The working principle of the present invention is as follows: when in use, the raw material is placed in the raw material cavity 33, and the additive is placed in the mixing cavity 32. Initially, the feed roller 41 controls the first feed port 22 to be in a closed state, and the sealing plate 514 is in the second feed port 23 as a whole. The sealing plate 514 controls the second feed port 23 to be in a sealed state. When the raw material needs to be transported and unloaded, the motor 45 drives the rotating rod 43 to rotate and then drives the feed roller 41 to rotate synchronously in the feed cylinder 2. When the guide cavity 42 on the surface of the feed roller 41 rotates to a position relative to the first feed port 22, the raw material in the raw material cavity 33 passes through the first feed port 22 and automatically falls into the guide cavity 42. The guide cavity 42 continues to rotate. When the guide cavity 42 rotates to a position relative to the discharge port 21, the raw material in the guide cavity 42 passes through the discharge port 21 under the action of gravity and falls into the melt box 1. The feed roller 41 rotates continuously to control the intermittent delivery of raw materials.

[0040] The material guide cavity 42 on the surface of the feed roller 41 drives the magnetic strip 522 to move synchronously. When the material guide cavity 42 rotates to a position opposite to the second feed port 23, the magnetic strip 522 and the control strip 521 fit together. The magnetic strip 522 is connected to the control strip 521 as a whole through magnetic attraction. The magnetic strip 522 cooperates with the control strip 521 during rotation to push the sealing plate 514 to move toward the telescopic cavity 511. At this time, the second feed port 23 is converted to an open state, and the additive can automatically fall into the material guide cavity 42. The feed roller 41 continues to rotate, the magnetic strip 522 is separated from the control strip 521, and the sealing plate 514 moves back to the second feed port 23 under the thrust of the extrusion spring 512, and the second feed port 23 is converted to a sealed state again. The additive in the batching cavity 32 can automatically fall into the material guiding cavity 42 through the second feed port 23 , and a proper amount of the additive is fully mixed with the raw material in the material guiding cavity, which can effectively improve the melting effect of the material in the melting box 1 .

[0041] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A raw material conveying device for an injection molding machine, comprising a melt box, a feed cylinder is fixedly mounted on the surface of the melt box, and a feed funnel is fixedly mounted on the top of the feed cylinder, characterized in that: A partition is fixedly installed in the feeding funnel, and the partition divides the inner cavity of the feeding funnel into a batching cavity and a raw material cavity. A discharge port connected to the melting box is opened downward on the bottom wall of the feeding cylinder. A first feed port connected to the raw material cavity is opened on the surface of the feeding cylinder. A second feed port connected to the batching cavity is opened on the surface of the feeding cylinder. An intermittent feeding assembly is arranged in the feeding cylinder, and the intermittent feeding assembly includes a feeding roller rotatably installed in the feeding cylinder, a material guide cavity is opened on the surface of the feeding roller, and rotating rods are fixedly installed at both ends of the feeding roller. The rotating rod is rotatably connected to the side wall of the feeding barrel, a control box is fixedly installed on the outside of the melt box and the feeding funnel, one end of the rotating rod away from the feeding roller extends into the control box and is connected to a motor, the side wall of the feeding barrel is provided with a quantitative mixing mechanism that cooperates with the feeding roller, the quantitative mixing mechanism includes a sealing component and an automatic guide assembly, the sealing component is located in the second feed port, the sealing component is used to control the second feed port to be in a closed state, the sealing component includes a sealing component located in the second feed port opened inside the side wall of the feeding barrel The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs.

2. The raw material conveying device for an injection molding machine according to claim 1, characterized in that: A stirring and feeding mechanism is arranged in the feeding funnel, and the stirring and feeding mechanism includes a stirring component and a transmission component. The stirring component is located in the batching cavity and the raw material cavity. The stirring component is used to stir the materials in the batching cavity and the raw material cavity. The transmission component is connected to the stirring component.

3. A raw material conveying device for an injection molding machine according to claim 2, characterized in that: The stirring assembly includes rotating rods rotatably installed in the batching chamber and the raw material chamber respectively. The rotating rods in the batching chamber and the raw material chamber are respectively located above the second feed port and the first feed port. A plurality of groups of evenly distributed stirring rods are arranged on the surface of the rotating rods.

4. The raw material conveying device for an injection molding machine according to claim 3, characterized in that: The transmission assembly includes a transmission gear plate with one end of a rotating rod extending into the control box and fixedly installed, a transmission gear plate is fixedly installed on the surface of the rotating rod, and multiple groups of transmission gear plates are commonly connected with a transmission belt.

5. The material conveying device for an injection molding machine according to claim 1, characterized in that: A plurality of support rods are fixedly mounted on the surface of the melting box, and the top ends of the plurality of support rods are respectively connected to the feeding funnels.

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