Injection molding head structure of anti-backflow structure

Abstract

The utility model discloses an injection molding head structure of an anti-backflow structure, which comprises a mold and an injection molding head body, and the injection molding head body is arranged in the mold; the injection molding head further comprises a sealing plate, the top of the sealing plate slides at the bottom of the injection molding head body, the top of the sealing plate slides on a fixing rod, the two ends of the fixing rod are fixed into the injection molding head body, a first spring is embedded in the bottom of the fixing rod, and the bottom of the first spring is connected into the injection molding head body. The top of the first spring is connected to a sealing plate, and an impeller is rotationally arranged on the sealing plate. The injection molding head structure of the anti-backflow structure is provided with the cleaning roller, the impeller can be driven to rotate through movement of materials, then the impeller can drive the cleaning roller to rotate, the cleaning roller can clean the interior of the injection molding head body, and therefore the injection molding head body is prevented from being blocked; and the anti-backflow effect can be achieved through the sealing plate.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding heads, in particular to an injection molding head structure with an anti-backflow structure. Background Art

[0002] When molds are used to produce parts, an injection head is used to transport the material into the mold, so that the mold can process the material.

[0003] Reference publication number CN108437374A is an anti-backflow device for injection molds, which is used in conjunction with a housing, a base and a current limiting device, and has the function of automatically limiting the backflow of the mold injection port through the injection material and the reverse direction under unidirectional pressure. It is simple and convenient to use, ensures the production quality of the mold, and improves the production efficiency. However, there are still the following problems:

[0004] In the actual use of the above-mentioned device, although the anti-backflow effect is achieved through the flow limiting device, the anti-backflow effect is achieved by the flow limiting device through material conveying, extrusion and movement, which may affect the material flow rate and may cause the material to be adsorbed inside the injection head and cause blockage.

[0005] Therefore, we propose an injection head structure with an anti-backflow structure that can well solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an injection head structure with an anti-backflow structure to solve the problem raised in the above-mentioned background technology that the current flow-limiting device on the market achieves the anti-backflow effect by extruding and moving the material, which may affect the material flow rate and may cause the material to be adsorbed inside the injection head and cause blockage.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection head structure with an anti-backflow structure, comprising a mold and an injection head body, wherein the injection head body is arranged inside the mold;

[0008] Also includes:

[0009] A sealing plate, the top of which slides on the bottom of the injection head body, and the top of the sealing plate slides on the fixing rod, and the two ends of the fixing rod are fixed inside the injection head body, a first spring is nested at the bottom of the fixing rod, and the bottom of the first spring is connected to the inside of the injection head body, and the top of the first spring is connected to the sealing plate, an impeller rotates on the sealing plate, and a cleaning roller is fixed on the top of the impeller, and the top of the cleaning roller extends into the inside of the injection head body, and the outer side of the cleaning roller fits against the inner wall of the injection head body.

[0010] Preferably, a latch is passed through the side of the injection head body, the bottom of the latch extends into the interior of the mold, and a clamping block is fixed to the bottom of the latch.

[0011] Through the above structural arrangement, the injection head body can be connected to the mold.

[0012] Preferably, the outer end of the clamping block extends into the interior of the slide groove to form a sliding mechanism, and the slide groove is opened inside the mold.

[0013] Through the above structural setting, the clamping block can be engaged with the sliding groove.

[0014] Preferably, a protrusion is slidably disposed on the outer end of the clamping block, and the outer end of the protrusion is arranged in a semicircular shape.

[0015] Through the above structural arrangement, the protrusion can move after being squeezed by force.

[0016] Preferably, the outer end of the protrusion extends into the interior of the groove to form a locking mechanism, and the groove is opened inside the mold.

[0017] Through the above-mentioned structural setting, the protrusion can be engaged with the groove to improve the stability of the block.

[0018] Preferably, the inner end of the protrusion is connected to a second spring, and the inner end of the second spring is connected to the inside of the clamping block.

[0019] Through the above structural arrangement, the second spring can limit the protrusion.

[0020] Compared with the prior art, the beneficial effects of the utility model are: the injection head structure of the anti-backflow structure can avoid blockage and facilitate disassembly and assembly, the inside of the injection head body can be cleaned by the rotation of the cleaning roller, thereby preventing the material from clogging the inside of the injection head body, and the injection head body can be quickly disassembled and assembled by the engagement of the card block with the slide groove, the specific contents are as follows:

[0021] (1) A cleaning roller is provided, and the movement of the material drives the impeller to rotate, and then the rotation of the impeller drives the cleaning roller to rotate, and then the cleaning roller can clean the inside of the injection head body, thereby avoiding clogging of the injection head body, and the sealing plate can achieve the effect of preventing backflow;

[0022] (2) A clamping block is provided, and the clamping block is driven to rotate by rotating the latch pin, so that the clamping block can be disengaged from or engaged in the slide groove, so that the injection head body can be quickly disassembled and assembled from the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the front cross-section structure of the sealing plate of the utility model;

[0025] Figure 3 This is a schematic diagram of the front cross-section structure of the fixing rod of the utility model;

[0026] Figure 4 For this utility model Figure 1 A is a schematic diagram of the enlarged structure;

[0027] Figure 5 It is a schematic diagram of the top-sectional structure of the convex block of the utility model.

[0028] In the figure: 1. mold; 2. injection head body; 3. sealing plate; 4. fixing rod; 5. first spring; 6. impeller; 7. cleaning roller; 8. latch; 9. block; 10. slide groove; 11. protrusion; 12. groove; 13. second spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 5 The utility model provides a technical solution: an injection head structure with an anti-backflow structure, comprising a mold 1 and an injection head body 2, wherein the injection head body 2 is arranged inside the mold 1; further comprising: a sealing plate 3, the top of which slides on the bottom of the injection head body 2, and the top of the sealing plate 3 slides on a fixing rod 4, and both ends of the fixing rod 4 are fixed inside the injection head body 2, a first spring 5 is nested at the bottom of the fixing rod 4, and the bottom of the first spring 5 is connected to the inside of the injection head body 2, and the top of the first spring 5 is connected to the sealing plate 3, an impeller 6 is rotated on the sealing plate 3, and a cleaning roller 7 is fixed to the top of the impeller 6, and the top of the cleaning roller 7 extends into the inside of the injection head body 2, and the outer side of the cleaning roller 7 is attached to the inner wall of the injection head body 2;

[0031] refer to Figures 1 to 3, the material passing through the injection head body 2 will squeeze the sealing plate 3, so that the sealing plate 3 moves after being squeezed, and then the sealing plate 3 moves and can slide on the fixed rod 4, and the movement of the sealing plate 3 will squeeze the first spring 5, so that the first spring 5 is compressed by force, and when the material is not conveyed, the sealing plate 3 is pushed to reset by the first spring 5, and then the purpose of backflow prevention is achieved, and the flow of material will drive the impeller 6 to rotate, so that the impeller 6 rotates and drives the cleaning roller 7 to rotate, and then the cleaning roller 7 rotates to clean the material inside the injection head body 2, so as to avoid the material from being blocked inside the injection head body 2;

[0032] A latch 8 is passed through the side of the injection head body 2, and the bottom of the latch 8 extends into the interior of the mold 1, and a clamping block 9 is fixed to the bottom of the latch 8, and the outer end of the clamping block 9 extends into the interior of the slide groove 10 to form a sliding mechanism, and the slide groove 10 is opened in the interior of the mold 1, and a protrusion 11 is slidably provided at the outer end of the clamping block 9, and the outer end of the protrusion 11 is semicircularly arranged, and the outer end of the protrusion 11 extends into the interior of the groove 12 to form a locking mechanism, and the groove 12 is opened in the interior of the mold 1, and the inner end of the protrusion 11 is connected to the second spring 13, and the inner end of the second spring 13 is connected to the interior of the clamping block 9;

[0033] refer to Figure 1 , Figure 4 and Figure 5 When the injection head body 2 needs to be disassembled, the latch 8 is rotated, and then the latch 8 is rotated to drive the block 9 to rotate, and then the block 9 is rotated to slide inside the slide groove 10, so that the block 9 slides and drives the protrusion 11 to move, and then the protrusion 11 moves to squeeze the second spring 13, so that the second spring 13 is compressed, and the movement of the protrusion 11 will be disengaged from the engagement with the groove 12, and then after the latch 8 is rotated to the position, the latch 8 is pulled, and then the latch 8 can be disengaged from the engagement with the mold 1, so that the injection head body 2 can be quickly disassembled and assembled.

[0034] Working principle: When using the injection head structure of this anti-backflow structure, first, refer to Figures 1 to 3 , the material passes through the injection head body 2 and squeezes the sealing plate 3, so that the sealing plate 3 moves after being squeezed, and the movement of the sealing plate 3 squeezes the first spring 5. When the material is not conveyed, the sealing plate 3 is pushed back by the first spring 5, and the flow of the material drives the impeller 6 to rotate, so that the impeller 6 rotates and drives the cleaning roller 7 to rotate, and then the cleaning roller 7 rotates to clean the material inside the injection head body 2, so as to avoid the material being blocked inside the injection head body 2;

[0035] refer to Figure 1 , Figure 4 and Figure 5When the injection head body 2 needs to be disassembled, the latch 8 is rotated, and then the latch 8 rotates to drive the block 9 to rotate, so that the block 9 slides and drives the protrusion 11 to move, and then the movement of the protrusion 11 can squeeze the second spring 13, and the movement of the protrusion 11 will disengage from the engagement with the groove 12, and then after the latch 8 is rotated to the position, the latch 8 is pulled, so that the injection head body 2 can be quickly disassembled and assembled.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injection molding head structure with a backflow prevention structure, comprising a mold (1) and an injection molding head body (2), wherein the injection molding head body (2) is arranged inside the mold (1); It is characterized in that Also includes: A sealing plate (3) whose top slides on the bottom of the injection head body (2), and the top of the sealing plate (3) slides on the fixing rod (4), and the two ends of the fixing rod (4) are fixed inside the injection head body (2), a first spring (5) is embedded in the bottom of the fixing rod (4), and the bottom of the first spring (5) is connected to the inside of the injection head body (2), and the top of the first spring (5) is connected to the sealing plate (3), an impeller (6) is rotated on the sealing plate (3), and a cleaning roller (7) is fixed on the top of the impeller (6), and the top of the cleaning roller (7) extends into the inside of the injection head body (2), and the outer side of the cleaning roller (7) is in contact with the inner wall of the injection head body (2).

2. The injection head structure of the anti-backflow structure according to claim 1, Features: A latch (8) penetrates the side of the injection head body (2), and the bottom of the latch (8) extends into the interior of the mold (1), and a clamping block (9) is fixed to the bottom of the latch (8).

3. The injection head structure of the anti-backflow structure according to claim 2, Features: The outer end of the clamping block (9) extends into the interior of the slide groove (10) to form a sliding mechanism, and the slide groove (10) is provided inside the mold (1).

4. The injection head structure of the backflow prevention structure according to claim 3, Features: A protrusion (11) is slidably disposed on the outer end of the clamping block (9), and the outer end of the protrusion (11) is arranged in a semicircular shape.

5. The injection head structure of the backflow prevention structure according to claim 4, Features: The outer end of the protrusion (11) extends into the interior of the groove (12) to form a locking mechanism, and the groove (12) is provided inside the mold (1).

6. The injection head structure of the backflow prevention structure according to claim 5, Features: The inner end of the protrusion (11) is connected to a second spring (13), and the inner end of the second spring (13) is connected to the inside of the clamping block (9).

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