Nozzle for injection molding machine

By increasing the welding area between the hot oil sleeve of the injection molding machine nozzle and the third chamfer and sixth step, the problems of poor nozzle cooling effect and insufficient connection stability were solved, resulting in a more stable cooling and production process.

CN223466609UActive Publication Date: 2025-10-24DONGGUAN TAIXING HARDWARE PROD CO LTD
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Patent Information

Application Number
CN202422655214.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-10-24
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

Existing injection molding machine nozzles lack cooling effect, resulting in excessively high plastic solution temperature, affecting product quality, and the connection between the cooling jacket and the nozzle lacks stability.

Method used

The welding area between the warm oil sleeve and the third chamfer and the sixth step is increased on the nozzle body. The welding stability and reliability between the warm oil sleeve and the nozzle body are enhanced by the first welding gap and the second welding gap.

Benefits of technology

This improved the welding stability and reliability of the nozzle, ensured the cooling effect of the plastic solution, and improved product quality and production stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a nozzle for an injection molding machine. The nozzle comprises a nozzle body, and a flange and a warm oil sleeve which are arranged on the nozzle body, the nozzle body is provided with an ejection runner, and the left end and the right end of the ejection runner penetrate through the nozzle body respectively and form a corresponding feeding port and a corresponding discharging port. The nozzle body comprises a connecting part, a cooling part and an ejection part, the flange is arranged on the connecting part in a sealing and sleeving mode, and the connecting part comprises a first step part, a first chamfering part, a second step part, a third step part, a fourth step part, a second chamfering part, a fifth step part and a third chamfering part which are sequentially arranged from left to right; a first welding gap is formed between the third chamfer part and the warm oil sleeve; and a second welding gap is formed between the second inner side chamfer of the warm oil sleeve and the periphery of the sleeved sixth step part. The welding area between the warm oil sleeve and the third chamfer part and the welding area between the warm oil sleeve and the sixth step part are increased correspondingly, and then the welding stability and reliability between the warm oil sleeve and the nozzle body are better formed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine nozzle technical field especially is injection molding machine nozzle. BACKGROUND

[0002] The injection molding machine needs to inject the plastic solution in the barrel into the plastic mold in the process of working, so that the plastic solution is cooled and formed in the mold, and then different shape plastic products are produced.

[0003] In this process, the workpiece needs to be connected to the barrel and the mold of the injection molding machine, and the normal flow of the liquid is ensured, so the injection molding machine nozzle is needed, but the existing injection molding machine nozzle still has some problems in use.

[0004] The existing injection molding machine nozzle does not have a cooling effect, which leads to high temperature of the plastic solution and affects the product. A cooling sleeve with cooling water is provided around the nozzle, but the connection stability between the cooling sleeve and the nozzle is lacking.

[0005] Therefore, in the utility model patent application, the applicant carefully studies an injection molding machine nozzle to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model discloses in view of the prior art exists the insufficient, want the purpose at providing a kind of injection molding machine nozzle, it respectively increases the welding area between warm oil sleeve and third chamfer portion, sixth step portion, in turn better form the welding stability and reliability between warm oil sleeve and nozzle body.

[0007] To achieve the above-mentioned purpose, the utility model takes the following technical scheme:

[0008] An injection molding machine nozzle, comprising a nozzle body and a flange disposed on the nozzle body, a warm oil sleeve;

[0009] The nozzle body has a shooting runner, and the left and right ends of the shooting runner respectively penetrate the nozzle body and form corresponding feed ports and discharge ports;

[0010] The nozzle body includes a connecting portion, a cooling portion and a shooting portion, the flange is sealed and sleeved on the connecting portion, and the connecting portion includes a first step portion, a first chamfer portion, a second step portion, a third step portion, a fourth step portion, a second chamfer portion, a fifth step portion and a third chamfer portion arranged in sequence from left to right;

[0011] The outer diameter of the second step portion is greater than the outer diameter of the first step portion, the first chamfer portion has a gradually increasing structure from left to right, the outer diameter of the third step portion is less than the outer diameter of the second step portion and greater than the outer diameter of the first step portion, the outer diameter of the fourth step portion is equal to the outer diameter of the second step portion, the second chamfer portion and the third chamfer portion both have a gradually decreasing structure from left to right, the outer diameter of the fifth step portion is less than the outer diameter of the fourth step portion, and the right end of the third chamfer portion is connected to the left end of the cooling portion;

[0012] The outer diameter of the cooling portion is greater than the outer diameter of the first step portion, the left end surface of the first chamfer portion is concavely provided with an oil inlet groove to the right, the outer periphery of the cooling portion is spirally provided with a spiral groove along the circumferential direction thereof, the oil inlet groove extends through to the spiral groove, the warm oil sleeve is sleeved on the outer periphery of the cooling portion and part of the ejection portion, the left end surface of the warm oil sleeve is flush with the left end surface of the cooling portion, and a first welding gap is formed between the third chamfer portion and the warm oil sleeve;

[0013] A sealing cavity between the inner side wall of the warm oil sleeve and the spiral groove forms a cooling spiral oil channel, the right end of the warm oil sleeve is provided with an oil outlet hole, the oil outlet hole communicates with the cooling spiral oil channel, and the left and right ends of the inner side wall of the warm oil sleeve are respectively formed with a first inner side chamfer and a second inner side chamfer;

[0014] The ejection portion includes a sixth step portion and a fourth chamfer portion, the outer diameter of the sixth step portion is consistent with the outer diameter of the cooling portion, the fourth chamfer portion has a gradually decreasing structure from left to right, the warm oil sleeve is sleeved on the outer periphery of the cooling portion and part of the sixth step portion, and a second welding gap is formed between the second inner side chamfer and the outer periphery of the sixth step portion which is sleeved.

[0015] As a preferred solution, the outer diameter of the second step portion is greater than twice the outer diameter of the first step portion.

[0016] As a preferred solution, the outer diameter of the fifth step portion is greater than twice the outer diameter of the first step portion.

[0017] As a preferred solution, the length of the ejection portion is greater than the sum of the lengths of the fifth step portion and the third chamfer portion.

[0018] As a preferred solution, the ejection flow channel includes a first step flow channel, a first chamfer flow channel, a second step flow channel, a third step flow channel, a fourth step flow channel, a fifth step flow channel and a second chamfer flow channel arranged in sequence from left to right;

[0019] The left end of the first stepped flow channel is an inlet, the inner diameter of the first stepped flow channel is larger than that of the second stepped flow channel, the first chamfered flow channel is gradually reduced from left to right, the inner diameter of the third stepped flow channel is larger than that of the first stepped flow channel, the inner diameter of the fourth stepped flow channel is larger than that of the third stepped flow channel, the inner diameter of the fifth stepped flow channel is larger than that of the third stepped flow channel and smaller than that of the fourth stepped flow channel, the second chamfered flow channel is gradually increased from left to right, and the right end of the second stepped flow channel is an outlet.

[0020] As a preferred solution, the fourth stepped flow channel is communicated with the fifth stepped flow channel and the third stepped flow channel through chamfered corners respectively.

[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking: it mainly increases the welding area between the warm oil sleeve and the third chamfered part and the sixth stepped part through the first welding gap and the second welding gap, and then better forms the welding stability and reliability between the warm oil sleeve and the nozzle body.

[0022] To make the structure characteristics and effects of the present application clearer, specific embodiments will be described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the left view of the embodiment of the utility model;

[0024] Figure 2 is the top view of the embodiment of the utility model;

[0025] Figure 3 is the cross section structure schematic view of the embodiment of the utility model (showing after welding);

[0026] Figure 4 is the cross section structure schematic view of the embodiment of the utility model (showing before welding);

[0027] Figure 5 is Figure 4 the enlarged structure schematic view of A in the figure;

[0028] Figure 6 is Figure 4 the enlarged structure schematic view of B in the figure;

[0029] Figure 7 is the top view of the nozzle body of the embodiment of the utility model;

[0030] Figure 8 is the cross section structure schematic view of the nozzle body of the embodiment of the utility model;

[0031] Figure 9 is the cross section structure schematic view of the warm oil sleeve of the embodiment of the utility model;

[0032] Figure 10 is Figure 9 enlarged structural schematic view of C in the middle;

[0033] Figure 11 is Figure 9 enlarged structural schematic view of D in the middle;

[0034] Figure 12 is a flange sectional structure schematic view of the embodiment of the utility model.

[0035] Explanation of figure number

[0036] 10, nozzle body

[0037] 101, first step flow channel 102, first chamfer flow channel

[0038] 103, second step flow channel 104, third step flow channel

[0039] 105, fourth step flow channel 106, fifth step flow channel

[0040] 107, second chamfer flow channel 108, rounded corner

[0041] 11, connecting part

[0042] 111, first step part 112, first chamfer part

[0043] 113, second step part 114, third step part

[0044] 115, fourth step part 116, second chamfer part

[0045] 117, fifth step part 118, third chamfer part

[0046] 12, cooling part

[0047] 13, injection part

[0048] 131, sixth step part 132, fourth chamfer part

[0049] 14, oil inlet groove 15, spiral groove

[0050] 16, cooling spiral oil channel

[0051] 171, first welding gap 172, second welding gap

[0052] 20, flange 30, warm oil sleeve

[0053] 31, first inner side chamfer 32, second inner side chamfer. DETAILED DESCRIPTION

[0054] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0055] like Figures 1 to 12 As shown, a nozzle for an injection molding machine includes a nozzle body 10 and a flange and a warm oil sleeve 30 provided on the nozzle body 10;

[0056] The nozzle body 10 has an injection flow channel, and the left and right ends of the injection flow channel respectively pass through the nozzle body 10 and form corresponding feed ports and discharge ports;

[0057] The injection channel includes a first step channel 101, a first chamfered channel 102, a second step channel 103, a third step channel 104, a fourth step channel 105, a fifth step channel 106 and a second chamfered channel 107, which are arranged in sequence from left to right.

[0058] The left end of the first stepped flow channel 101 is a feed port. The inner diameter of the first stepped flow channel 101 is larger than the inner diameter of the second stepped flow channel 103. The first chamfered flow channel 102 is a structure that gradually decreases from left to right.

[0059] The inner diameter of the third stepped flow channel 104 is larger than the inner diameter of the first stepped flow channel 101, the inner diameter of the fourth stepped flow channel 105 is larger than the inner diameter of the third stepped flow channel 104, and the inner diameter of the fifth stepped flow channel 106 is larger than the inner diameter of the third stepped flow channel 104 and smaller than the inner diameter of the fourth stepped flow channel 105. Preferably, the fourth stepped flow channel 105 is connected to the fifth stepped flow channel 106 and the third stepped flow channel 104 via a rounded corner 108.

[0060] The second chamfered flow channel 107 is a structure that gradually increases from left to right, and the right end of the second stepped flow channel 103 is a discharge port.

[0061] Through the cooperation of the first chamfered flow channel 102 and the second chamfered flow channel 107 , the glue discharge speed can be changed, clogging is not easy, and the stability of subsequent production and the quality of the product can be improved.

[0062] The nozzle body 10 includes a connecting portion 11, a cooling portion 12, and an ejection portion 13. The flange sealing sleeve is provided on the connecting portion 11. The connecting portion 11 includes, from left to right, a first step portion 111, a first chamfered portion 112, a second step portion 113, a third step portion 114, a fourth step portion 115, a second chamfered portion 116, a fifth step portion 117, and a third chamfered portion 118.

[0063] The outer diameter of the second step portion 113 is greater than the outer diameter of the first step portion 111 . In this embodiment, the outer diameter of the second step portion 113 is greater than twice the outer diameter of the first step portion 111 .

[0064] The first chamfer part 112 is gradually increased from left to right, the outer diameter of the third step part 114 is smaller than that of the second step part 113 and larger than that of the first step part 111, and the outer diameter of the fourth step part 115 is equal to that of the second step part 113; the second chamfer part 116 and the third chamfer part 118 are gradually decreased from left to right.

[0065] The outer diameter of the fifth step part 117 is smaller than that of the fourth step part 115, and the right end of the third chamfer part 118 is connected with the left end of the cooling part 12; preferably, the outer diameter of the fifth step part 117 is more than twice of that of the first step part 111.

[0066] The outer diameter of the cooling part 12 is larger than that of the first step part 111, the left end surface of the first chamfer part 112 is concave to the right and provided with an oil inlet groove 14, the outer periphery of the cooling part 12 is spirally provided with a spiral groove 15 along the circumferential direction, the oil inlet groove 14 extends through the spiral groove 15, the warm oil sleeve 30 is sleeved on the outer periphery of the cooling part 12 and part of the ejection part 13, the left end surface of the warm oil sleeve 30 is flush with the left end surface of the cooling part 12, and the first welding gap 171 is formed between the third chamfer part 118 and the warm oil sleeve 30.

[0067] The sealing cavity between the inner side wall of the warm oil sleeve 30 and the spiral groove 15 forms a cooling spiral oil channel 16, the right end of the warm oil sleeve 30 is provided with an oil outlet hole, the oil outlet hole is communicated with the cooling spiral oil channel 16, and the left and right ends of the inner side wall of the warm oil sleeve 30 are respectively provided with a first inner side chamfer 31 and a second inner side chamfer 32.

[0068] Preferably, the length of the ejection part 13 is greater than the length of the fifth step part 117 and the third chamfer part 118; in the embodiment, the ejection part 13 comprises a sixth step part 131 and a fourth chamfer part 132, the outer diameter of the sixth step part 131 is consistent with that of the cooling part 12, the fourth chamfer part 132 is gradually decreased from left to right, the warm oil sleeve 30 is sleeved on the outer periphery of the cooling part 12 and part of the sixth step part 131, and the second welding gap 172 is formed between the second inner side chamfer 32 and the outer periphery of the sixth step part 131.

[0069] The utility model discloses design main points at, it mainly is through first welding gap and second welding gap, respectively increase the welding area between warm oil sleeve and third chamfer part, sixth step part, then better form the welding stability and reliability between warm oil sleeve and nozzle body.

[0070] The above merely describes preferred embodiments of the present application and is not intended to limit the technical scope of the present application in any way. Any slight modification, equivalent change, and modification made according to the technical essence of the present application shall still fall within the technical scope of the present application.

Claims

1. A nozzle for an injection molding machine, characterized in that: The nozzle body and the flange arranged on the nozzle body, and the warm oil sleeve; The nozzle body has an injection channel, and left and right ends of the injection channel respectively penetrate the nozzle body and are formed with corresponding feed ports and discharge ports; The nozzle body includes a connecting portion, a cooling portion, and an injection portion, the flange sealing sleeve is arranged on the connecting portion, and the connecting portion includes first, second, third, fourth, fifth, and sixth step portions and first, second, and third chamfer portions arranged in sequence from left to right. The outer diameter of the second step portion is greater than that of the first step portion, the first chamfer portion has a gradually increasing structure from left to right, the outer diameter of the third step portion is less than that of the second step portion and greater than that of the first step portion, the outer diameter of the fourth step portion is equal to that of the second step portion, the second and third chamfer portions have a gradually decreasing structure from left to right, the outer diameter of the fifth step portion is less than that of the fourth step portion, and the right end of the third chamfer portion is connected to the left end of the cooling portion. The outer diameter of the cooling portion is greater than that of the first step portion, the left end face of the first chamfer portion is concave to the right and provided with an oil inlet groove, the outer periphery of the cooling portion is spirally provided with a spiral groove in the circumferential direction, the oil inlet groove extends through the spiral groove, the warm oil sleeve is arranged on the outer periphery of the cooling portion and part of the injection portion, the left end face of the warm oil sleeve is flush with the left end face of the cooling portion, and a first welding gap is formed between the third chamfer portion and the warm oil sleeve. A sealing cavity between the inner side wall of the warm oil sleeve and the spiral groove forms a cooling spiral oil channel, the right end of the warm oil sleeve is provided with an oil outlet hole, the oil outlet hole communicates with the cooling spiral oil channel, and the left and right ends of the inner side wall of the warm oil sleeve are respectively formed with first and second inner side chamfer portions. The injection portion includes a sixth step portion and a fourth chamfer portion, the outer diameter of the sixth step portion is consistent with that of the cooling portion, the fourth chamfer portion has a gradually decreasing structure from left to right, and the warm oil sleeve is arranged on the outer periphery of the cooling portion and part of the sixth step portion, and a second welding gap is formed between the second inner side chamfer portion and the outer periphery of the sixth step portion.

2. The nozzle for an injection molding machine according to claim 1, characterized by: The outer diameter of the second step portion is greater than twice the outer diameter of the first step portion.

3. The nozzle for an injection molding machine according to claim 1, characterized by: The outer diameter of the fifth step portion is greater than twice the outer diameter of the first step portion.

4. The nozzle for an injection molding machine according to claim 1, characterized by: The length of the injection portion is greater than the sum of the lengths of the fifth step portion and the third chamfer portion.

5. The nozzle for an injection molding machine of claim 1, wherein: The injection channel includes first, second, third, fourth, fifth, and sixth step channels and first and second chamfer channels arranged in sequence from left to right. The left end of the first step channel is a feed port, the inner diameter of the first step channel is greater than that of the second step channel, the first chamfer channel has a gradually decreasing structure from left to right, the inner diameter of the third step channel is greater than that of the first step channel, the inner diameter of the fourth step channel is greater than that of the third step channel, the inner diameter of the fifth step channel is greater than that of the third step channel and less than that of the fourth step channel, the second chamfer channel has a gradually increasing structure from left to right, and the right end of the second step channel is a discharge port.

6. The nozzle for an injection molding machine of claim 5, wherein: The fourth stepped runner respectively communicates with the fifth stepped runner and the third stepped runner through chamfers.