Material pipe assembling structure

Abstract

The utility model discloses a material pipe assembling structure which comprises a material pipe and an installation end plate. A first sinking step, a second sinking step, a third sinking step, a first axial stop surface, a second axial stop surface, a third axial stop surface and a first chamfer transition inclined surface are arranged on the peripheral side surface of the right end of the material pipe; a first inner ring surface, a second inner ring surface, a third inner ring surface, a first limiting surface, a second limiting surface and a second chamfer transition inclined surface are arranged on the inner circumferential side of the sleeving hole of the mounting end plate, the left end surface of the mounting end plate abuts against the first axial stop surface, and an annular gap is formed between the third inner ring surface and the second sunk step; the second chamfer transition inclined plane correspondingly surrounds the periphery of the first chamfer transition inclined plane to form a welding groove, and the right end of the welding groove is filled with tin, welded and fixedly provided with an end plate and a material pipe; the right end can be better controlled to be flush, the accuracy of installing and positioning the right end of the follow-up installing end plate and other parts is effectively improved, the installing quality is improved, and the installing and debugging difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field technology especially is a material pipe assembly structure. BACKGROUND

[0002] The material pipe is used for feeding as the accessory of the injection mold.

[0003] As Figure 7 For the material pipe with short shaft length, some can adopt the end plate part 101 integrated with the end of the material pipe 1, and the machining mode is generally adopted, so that the machining precision of the left and right ends of the end plate part 101 is easy to guarantee, and when the right side of the end plate part 101 is used for adapting and positioning with other parts, the problem of troublesome assembly and debugging is not prone to occur.

[0004] As Figure 8 For some material pipes with long shaft length, it is difficult to have the end plate part integrated with the end of the material pipe 2 (for example, material consumption, machining difficulty, etc.), and the mode of separate production of the material pipe and the end plate is generally adopted in the industry, that is, the material pipe directly adopts the pipe material, and the end plate 3 is a separately machined plate part, an annular groove is machined on the outer peripheral surface of the material pipe 2 for the end plate to be sleeved on the material pipe as axial positioning, and then a whole circle is welded between the left end face of the end plate 3 and the surface of the material pipe, so that the end plate 3 and the material pipe 2 are fixed. In actual production, due to factors such as the size deviation of the sleeving hole of the end plate 3, the size deviation of the annular groove on the outer peripheral surface of the material pipe 2 and the perpendicularity control precision of the right end face of the end plate 3, the flushness of the right end face of the end plate 3 and the corresponding right end part of the material pipe 2 after sleeving and welding fixing is not very ideal, and when assembled with other parts, repeated adjustment is needed, which leads to troublesome installation and affects the installation quality.

[0005] Therefore, it is necessary to study a new technical scheme to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the utility model mainly aims at the defects of the prior art, and provides a material pipe assembly structure, which can better control the flushness of the right end, effectively improve the precision of the installation and positioning of the right end of the installed end plate and other parts, improve the installation quality and reduce the installation and debugging difficulty.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A material pipe assembly structure comprises a material pipe and an installation end plate installed on one end of the material pipe,

[0009] The right end outer peripheral side of the material pipe is sequentially provided with a first sinking step, a second sinking step and a third sinking step towards the right port, the first sinking step, the second sinking step and the third sinking step are all circular ring steps extending left and right with the same center axis as the material pipe, and the first sinking step, the second sinking step and the third sinking step are sequentially and gradually lower, so that the outer diameter of the first sinking step is greater than the outer diameter of the second sinking step, the outer diameter of the second sinking step is greater than the outer diameter of the third sinking step, a first axial stop surface is formed between the first sinking step and the outer surface of the material pipe, a second axial stop surface is formed between the first sinking step and the second sinking step, a third axial stop surface is formed between the second sinking step and the third sinking step, and the outer edge of the third axial stop surface and the right end of the second sinking step are designed as a first chamfer transition slope.

[0010] The mounting end plate has a sleeve hole penetrating through the left and right ends, the inner peripheral side of the sleeve hole has a first inner annular surface, a second inner annular surface and a third inner annular surface arranged sequentially from left to right, the first inner annular surface, the second inner annular surface and the third inner annular surface are all circular ring surfaces extending left and right with the same center axis as the sleeve hole, the inner diameter of the first inner annular surface is greater than the inner diameter of the third inner annular surface, the inner diameter of the third inner annular surface is greater than the inner diameter of the second inner annular surface, a first limiting surface is formed between the first inner annular surface and the second inner annular surface, a second limiting surface is formed between the second inner annular surface and the third inner annular surface, and a second chamfer transition slope is designed between the right end of the third inner annular surface and the right end surface of the mounting end plate; the inner diameter of the second inner annular surface is greater than the outer diameter of the second sinking step.

[0011] The mounting end plate is sleeved on the right end outer periphery of the material pipe from right to left, the left end surface of the mounting end plate abuts on the first axial stop surface, the first inner annular surface wraps around the outer periphery of the first sinking step, the first limiting surface abuts on the second axial stop surface, the second inner annular surface wraps around the outer periphery of the second sinking step, and the third inner annular surface and the second sinking step form an annular gap; the second chamfer transition slope corresponds to the outer periphery of the first chamfer transition slope to form a right end flared design and a left end through the annular gap welding groove; the mounting end plate and the material pipe are fixed by tin soldering at the right end of the welding groove.

[0012] As a preferred solution, the right end surface of the mounting end plate, the third axial stop surface and the right end tin surface of the welding groove are flush.

[0013] As a preferred solution, an included angle is formed between the left end surface of the mounting end plate and the surface of the material pipe, and the left end surface of the mounting end plate and the surface of the material pipe are fixed by tin soldering in the included angle.

[0014] As a preferred solution, the axial width of the second inner annular surface is one-tenth to one-fourth of the axial width of the third inner annular surface.

[0015] As a preferred solution, a third chamfer transition slope is designed between the right end surface outer edge of the material pipe and the right end of the third sunk step.

[0016] As a preferred solution, an annular groove is arranged on the left end outer peripheral side surface of the material pipe, and the annular groove is coaxial with the material pipe.

[0017] As a preferred solution, an annular mounting groove is sunk on the left end surface of the material pipe, and the annular mounting groove is coaxial with the material pipe.

[0018] As a preferred solution, a plurality of threaded connection holes are concave on the outer peripheral side surface of the material pipe, the threaded connection holes have an internal thread hole section, a first smooth hole section and a second smooth hole section in turn from the outside to the inside, the internal thread hole section, the first smooth hole section and the second smooth hole section are arranged in the radial direction of the material pipe, the internal diameter of the internal thread hole section is equal to the internal diameter of the first smooth hole section, the internal diameter of the first smooth hole section is greater than the internal diameter of the second smooth hole section, and the internal end of the second smooth hole section is spaced from the inner wall surface of the material pipe.

[0019] As a preferred solution, the third inner annular surface and the second sunk step are fixed by welding.

[0020] The utility model discloses a right end of material pipe is provided with first sinking set step, second sinking set step, third sinking set step, first axial stop face, second axial stop face, third axial stop face and first chamfer transition inclined surface on the outer peripheral side, simultaneously, the first inner ring surface, second inner ring surface, third inner ring surface, first limit surface, second limit surface and second chamfer transition inclined surface are arranged on the inner peripheral side of the sleeve joint hole of mounting end plate, after mounting end plate is sleeved on the right end of material pipe from right to left, the left end surface of mounting end plate is on first axial stop face, first inner ring surface is wrapped on the periphery of first sinking set step, first limit surface is on second axial stop face, second inner ring surface is wrapped on the periphery of second sinking set step, and annular gap is formed between third inner ring surface and second sinking set step, second chamfer transition inclined surface is corresponded to the periphery of second chamfer transition inclined surface to form right end flared design, left end through annular gap's welding groove, mounting end plate and material pipe are fixed by soldering on the right end of welding groove, and the right end surface of mounting end plate and third axial stop face can better control flush, when installing, axial positioning is formed by first limit surface and second axial stop face, and the convex ring of second inner ring surface is used as fulcrum, owing to the reservation of annular gap, the right end of mounting end plate is adjusted a little relative to fulcrum, and then ensure that the right end surface of mounting end plate and third axial stop face are flush, effectively improve the precision of right end of subsequent mounting end plate and other parts installation positioning, improve installation quality, reduce installation debugging difficulty.

[0021] To make the structure characteristics and functions of the utility model clearer, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a sectional view of a material pipe assembly structure of an embodiment of the utility model;

[0023] Figure 2 is Figure 1 is a partial enlarged view of M in the figure;

[0024] Figure 3 is Figure 1 is a partial enlarged view of N in the figure;

[0025] Figure 4 is an exploded view of the mounting end plate and the material pipe;

[0026] Figure 5 is Figure 1 is a sectional view of A-A in the figure;

[0027] Figure 6 is Figure 5 is a partial enlarged view of B in the figure;

[0028] Figure 7 is a feeding tube assembly structure in the prior art;

[0029] Figure 8 is another feeding tube assembly structure in the prior art.

[0030] The drawing mark explanation: feeding tube 10, mounting end plate 20, first sinking step a1, second sinking step a2, third sinking step a3, first axial stop surface b1, second axial stop surface b2, third axial stop surface b3, first chamfer transition slope c1, annular groove 11, annular mounting groove 12, threaded connection hole 13, internal threaded hole section 131, first smooth hole section 132, second smooth hole section 133, sleeve joint hole 21, connecting hole 22, first inner ring surface d1, second inner ring surface d2, third inner ring surface d3, first limiting surface e1, second limiting surface e2, second chamfer transition slope f1, annular gap g1, tin g2, tin g3, convex ring d4. DETAILED DESCRIPTION

[0031] Please refer to Figures 1 to 6 , which shows the specific structure of the embodiment of the utility model.

[0032] In the description of the utility model, it should be explained that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation of the utility model.

[0033] A feeding tube assembly structure comprises a feeding tube 10 and a mounting end plate 20 mounted on one end of the feeding tube 10.

[0034] The interior of the material pipe 10 forms a cavity for accommodating materials, and the left and right ends of the material pipe 10 are through-set, and the outer peripheral side surface of the right end of the material pipe 10 is sequentially provided with a first sinking step a1, a second sinking step a2 and a third sinking step a3 toward the right port, and the first sinking step a1, the second sinking step a2 and the third sinking step a3 are all circular steps with the same central axis as the material pipe 10 and extending left and right, and the first sinking step a1, the second sinking step a2 and the third sinking step a3 are sequentially arranged in a gradually lower manner, so that the outer diameter of the first sinking step a1 is larger than the outer diameter of the second sinking step a2, the outer diameter of the second sinking step a2 is larger than the outer diameter of the third sinking step a3, and the first sinking step a1 and the material are aligned with each other. The outer surfaces of the tube 10 are connected to form a first axial stop surface b1, the first recessed step a1 and the second recessed step a2 are connected to form a second axial stop surface b2, and the second recessed step a2 and the third recessed step a3 are connected to form a third axial stop surface b3. Furthermore, a first chamfered transition slope c1 is designed between the outer edge of the third axial stop surface b3 and the right end of the second recessed step a2. The first axial stop surface b1, the second axial stop surface b2, and the third axial stop surface b3 all extend along the radial plane of the material tube 10. A third chamfered transition slope c2 is designed between the outer edge of the right end surface of the material tube 10 and the right end of the third recessed step a3 to serve as a guide and facilitate the installation of subsequent spare parts. Furthermore, an annular groove 11 is provided on the outer peripheral side of the left end of the material tube 10, and the annular groove 11 is coaxial with the material tube 10. An annular mounting groove 12 is formed on the left end surface of the material pipe 10 , and the annular mounting groove 12 and the material pipe 10 are coaxial. The outer side surface of the material pipe 10 is recessed with a plurality of threaded connection holes 13, and the threaded connection hole 13 has an internal threaded hole section 131, a first smooth hole section 132 and a second smooth hole section 133 which pass through in sequence from the outside to the inside. The internal threaded hole section 131, the first smooth hole section 132 and the second smooth hole section 133 are arranged to pass through the material pipe 10 in a radial direction. The inner diameter of the internal threaded hole section 131 is equal to the inner diameter of the first smooth hole section 132, the inner diameter of the first smooth hole section 132 is larger than the inner diameter of the second smooth hole section 133, and the inner end of the second smooth hole section 133 maintains a distance from the inner wall surface of the material pipe 10. In this way, the first smooth hole section 132 is used to extend the depth of the internal threaded connection hole to better accommodate the size of the connecting screw, the processing size of the connection hole and the assembly size tolerance. At the same time, the second smooth hole section 133 can be used to accommodate chips, dust and add a small amount of lubricating oil.

[0035] The mounting end plate 20 is an annular plate structure, which has a sleeve hole 21 passing through the left and right ends. The mounting end plate 20 is provided with a plurality of connection holes 22 arranged around the sleeve hole 21, so as to facilitate the connection and installation of the mounting end plate 20 with the external component; the inner circumference of the sleeve hole 21 has a first inner ring surface d1, a second inner ring surface d2 and a third inner ring surface d3 arranged in sequence from left to right, the first inner ring surface d1, the second inner ring surface d2 and the third inner ring surface d3 are all circular surfaces with the same central axis as the sleeve hole and extending left and right, the inner diameter of the first inner ring surface d1 is larger than the inner diameter of the third inner ring surface d3, and the inner diameter of the third inner ring surface d3 is larger than the inner diameter of the third inner ring surface d1. The inner diameter of the second inner ring surface d2, the first inner ring surface d1 and the second inner ring surface d2 are connected to form a first limiting surface e1, the second inner ring surface d2 and the third inner ring surface d3 are connected to form a second limiting surface e2, and the right end of the third inner ring surface d3 and the right end surface of the mounting end plate 20 are designed to form a second chamfered transition slope f1; usually, the first limiting surface e1 is extended along the radial plane of the sleeve hole 21, and the second limiting surface e2 can be extended along the radial plane of the sleeve hole 21, or it can be a slightly inclined slope, without restriction; the inner diameter of the second inner ring surface d2 is larger than the outer diameter of the second sunken step a2.

[0036] The mounting end plate 20 is sleeved on the outer periphery of the right end of the material tube 10 from right to left, the left end face of the mounting end plate abuts against the first axial stop surface b1, the first inner annular surface d1 is wrapped around the periphery of the first sunken step a1, the first limiting surface e1 abuts against the second axial stop surface b2, the second inner annular surface d2 is wrapped around the periphery of the second sunken step a2 to form a positioning, and an annular gap g1 is formed between the third inner annular surface d3 and the second sunken step a2; the second chamfered transition slope f1 surrounds the first corresponding The periphery of the chamfered transition slope c1 is formed to form a welding groove with a flared design on the right end and a left end that passes through the annular gap; the right end of the welding groove is filled with tin g2 to weld and fix the mounting end plate 20 and the material tube 10. Usually, the solder fills the welding groove and partially flows into the annular gap g1, forming a welded fixation between the third inner annular surface d3 and the second sunken step a2, which has a good welding effect and can better control the flushness of the right end face of the mounting end plate 20 and the third axial stop face b3. For example, the outer solder surface can be finely polished. The right end face of the mounting end plate 20, the third axial stop face b3, and the tin surface at the right end of the welding groove remain flush.

[0037] The left end surface of the mounting end plate 20 and the surface of the material pipe 10 form an included angle, and the left end surface of the mounting end plate 20 and the surface of the material pipe 10 are filled with tin soldering to be fixed. In actual operation, the right end of the welding groove is filled with tin solder g3 to fix the mounting end plate 20 and the material pipe 10, and then the left end surface of the mounting end plate 20 and the surface of the material pipe 10 are welded, so as to ensure that the right end surface of the mounting end plate 20 and the third axial stop surface b3 are flush.

[0038] The axial width of the second inner annular surface d2 is one-tenth to one-fourth of the axial width of the third inner annular surface d3. The first limiting surface e1 and the second axial stop surface b2 form axial positioning, and the convex ring d4 where the second inner annular surface d2 is located is used as a fulcrum. Due to the reservation of the annular gap g1, the right end of the mounting end plate 20 can be adjusted by a small amount relative to the fulcrum, so as to ensure that the right end surface of the mounting end plate 20 and the third axial stop surface b3 are flush, effectively improve the precision of the right end of the mounting end plate 20 and the installation and positioning of other parts, improve the installation quality, and reduce the installation and debugging difficulty.

[0039] The utility model discloses a design emphasis lies in, it mainly is through the right end outer peripheral side of material pipe 10 is provided with first sinking set step a1, second sinking set step a2, third sinking set step a3, first axial stop surface b1, second axial stop surface b2, third axial stop surface b3 and first chamfer transition inclined surface c1, simultaneously, to the inner peripheral side of the sleeve joint hole 21 of mounting end plate 20 is arranged first inner ring surface d1, second inner ring surface d2, third inner ring surface d3, first limit surface e1, second limit surface e2 and second chamfer transition inclined surface f1, make after mounting end plate 20 from right to left sleeve setting in the right end outer peripheral of material pipe 10, the left end surface of mounting end plate is on first axial stop surface b1, first inner ring surface d1 is wrapped in the periphery of first sinking set step a1, first limit surface e1 is on second axial stop surface b2, second inner ring surface d2 is wrapped in the periphery of second sinking set step a2, and third inner ring surface d3 and second sinking set step a2 between form annular gap, second chamfer transition inclined surface f1 corresponds the periphery of second chamfer transition inclined surface f1 to form right end flared design, left end through annular gap's welding groove, the right end of welding groove tin soldering fixed mounting end plate 20 and material pipe 10, the right end surface of mounting end plate 20 and third axial stop surface b3 can better control flush, when installing, utilize first limit surface e1 and second axial stop surface b2 form axial positioning, simultaneously utilize the convex ring of second inner ring surface d2 as fulcrum, owing to the reservation of annular gap g1, the right end of mounting end plate 20 is convenient for a small amount of adjustment relative to fulcrum, and then ensure that the right end surface of mounting end plate 20 and third axial stop surface b3 flush, effectively improve the right end of mounting end plate 20 and the precision of other parts installation positioning of subsequent installation, improve the installation quality, reduce installation debugging difficulty.

[0040] The above is only the preferred embodiment of the utility model, and does not make any limitation to the technical range of the utility model, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belongs to the range of the technical scheme of the utility model.

Claims

1. A material pipe assembly structure comprising a material pipe and a mounting end plate mounted on one end of the material pipe, characterized in that: an outer peripheral side of a right end of the material pipe is sequentially provided with a first sunken step, a second sunken step and a third sunken step from left to right towards a right port, the first sunken step, the second sunken step and the third sunken step are all circular steps extending left and right along a same central axis of the material pipe, and the first sunken step, the second sunken step and the third sunken step are sequentially and gradually lower, so that an outer diameter of the first sunken step is greater than an outer diameter of the second sunken step, the outer diameter of the second sunken step is greater than an outer diameter of the third sunken step, a first axial stop surface is formed between the first sunken step and an outer surface of the material pipe, a second axial stop surface is formed between the first sunken step and the second sunken step, a third axial stop surface is formed between the second sunken step and the third sunken step, and an outer edge of the third axial stop surface and a right end of the second sunken step are designed as a first chamfered transition slope; the mounting end plate has a sleeve joint hole penetrating left and right ends, an inner peripheral side of the sleeve joint hole has a first inner annular surface, a second inner annular surface and a third inner annular surface sequentially arranged from left to right, the first inner annular surface, the second inner annular surface and the third inner annular surface are all circular surfaces extending left and right along a same central axis of the sleeve joint hole, an inner diameter of the first inner annular surface is greater than an inner diameter of the third inner annular surface, the inner diameter of the third inner annular surface is greater than an inner diameter of the second inner annular surface, a first limiting surface is formed between the first inner annular surface and the second inner annular surface, a second limiting surface is formed between the second inner annular surface and the third inner annular surface, and a right end of the third inner annular surface and a right end surface of the mounting end plate are designed as a second chamfered transition slope; the inner diameter of the second inner annular surface is greater than the outer diameter of the second sunken step; the mounting end plate is sleeved on an outer peripheral of the right end of the material pipe from right to left, a left end surface of the mounting end plate abuts against the first axial stop surface, the first inner annular surface wraps around an outer periphery of the first sunken step, the first limiting surface abuts against the second axial stop surface, the second inner annular surface wraps around an outer periphery of the second sunken step, and the third inner annular surface and the second sunken step form an annular gap; the second chamfered transition slope corresponds to and wraps around an outer periphery of the first chamfered transition slope to form a right end flared design and a left end welding groove penetrating the annular gap; the mounting end plate and the material pipe are fixed by tin soldering at a right end of the welding groove. The right end surface of the mounting end plate, the third axial stop surface and a right end tin surface of the welding groove are flush.

2. A spool assembly according to claim 1, wherein: An included angle is formed between a left end surface of the mounting end plate and a surface of the material pipe, and the left end surface of the mounting end plate and the surface of the material pipe are fixed by tin soldering in the included angle.

3. A spool assembly as defined in claim 1, wherein: An axial width of the second inner annular surface is one tenth to one fourth of an axial width of the third inner annular surface.

4. The spool assembly of claim 1, wherein: ​ 5. A spout assembly according to claim 1, wherein: The right end surface of the material pipe is designed as a third chamfer transition slope between the right end of the third sinking step.

6. A spout assembly according to claim 1, wherein: The left end outer peripheral side surface of the material pipe is provided with an annular groove which is coaxial with the material pipe.

7. A spout assembly according to claim 1, wherein: The left end surface of the material pipe is sunk to form an annular mounting groove which is coaxial with the material pipe.

8. A spout assembly according to claim 1, wherein: The outer peripheral side surface of the material pipe is concave to form a plurality of threaded connection holes which have an inner threaded hole section, a first smooth hole section and a second smooth hole section in sequence from the outside to the inside, the inner threaded hole section, the first smooth hole section and the second smooth hole section are arranged in sequence along the radial direction of the material pipe, the inner diameter of the inner threaded hole section is equal to the inner diameter of the first smooth hole section, the inner diameter of the first smooth hole section is greater than the inner diameter of the second smooth hole section, and the inner end of the second smooth hole section is spaced apart from the inner wall surface of the material pipe.

9. A spout assembly according to claim 1, wherein: The third inner annular surface is welded and fixed between the second sinking step.

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