CN220008707U - Dual-functional adjusting part and injection molding machine - Google Patents

Abstract

The utility model relates to a dual-function adjusting component, a concentricity adjusting method and an injection molding machine, wherein the dual-function adjusting component comprises: a rotation shaft body having a first end surface; the spline housing is provided with a second end face, and the second end face is in butt joint with the first end face; the spline housing is provided with a penetrating hole for the screw to penetrate, the inner wall of the penetrating hole is also provided with a convex rib, and the convex rib is slidingly connected in the key groove; the buckle is clamped in the clamping groove of the screw rod, and the buckle is movably hooked at one end, far away from the rotating shaft body, of the spline housing along the axis direction of the screw rod; the elastic connecting parts are connected between the rotating shaft body and the spline housing so as to adjust the central axis of the screw rod penetrating through the spline housing. The utility model can adjust the concentricity of the screw rod from the installation, and is simple to operate; and the axial stress of the screw rod can be released so as to protect the screw rod.

Description

Dual-functional adjusting part and injection molding machine

Technical Field

The utility model relates to the technical field of transmission assemblies, in particular to a dual-function adjusting assembly and an injection molding machine.

Background

Injection molding is a method for producing and shaping industrial products, and the products are usually injection molding machines, abbreviated as injection molding machines or injection molding machines. The injection molding machine mainly comprises a melt adhesive mechanism, an adhesive injecting mechanism, a mold closing mechanism and a frame, wherein the melt adhesive mechanism conveys, stirs and melts materials, and the adhesive injecting mechanism pushes the materials in the melt adhesive mechanism so that the materials in the melt adhesive mechanism enter the mold closing mechanism to form injection molding products. Wherein, the conveying, melting and stirring of the materials are completed by the rotation of a screw rod in the melt adhesive mechanism in a charging barrel. During installation, if the central axis of screw rod takes place the skew, terminal shake appears easily when rotatory, accelerates the wearing and tearing of screw rod, transmission shaft body and feed cylinder, seriously influences the life of injection molding machine.

For this reason, the patent number is "CN20202318530.4", and the patent name is "an injection molding machine transmission shaft assembly", discloses an injection molding machine transmission shaft assembly, and it includes transmission shaft body and suit in proper order outside deep groove ball bearing, thrust aligning roller bearing and tapered roller bearing of transmission shaft body. In the rotating process of the transmission shaft body, the central axis of the transmission shaft body is adjusted through the direction and the change of the size of the transmission force of the three groups of bearings, and then the transmission shaft body is directly and fixedly installed in a screw installation hole of the transmission shaft body through a screw, so that the concentricity of the screw is indirectly adjusted. However, the adjustment of the screw center line in the patent document is performed during the rotation of the transmission shaft body, so that the abrasion of the bearing is accelerated, and the bearing needs to be frequently replaced; and because the structure of the injection molding machine is complex, the disassembly and replacement of the bearing are very troublesome.

In addition, since there is a mass change in the plastic particles introduced into the barrel of the injection molding machine, i.e., the density of the plastic particles changes after melting, the pressure of the material to which the screw is subjected also changes. However, when the structure of the existing injection molding machine is designed, the hard extrusion damage to the screw rod caused by the change of the density of plastic particles after melting is often ignored. And the existing screw rod is connected with the bearing, and is directly connected by adopting a key, so that the stability of the key connection is ensured, the screw rod is tightly connected with the inner ring of the bearing, and the screw rod cannot be subjected to structural design of axial pressure adjustment, so that the screw rod is easy to damage.

Disclosure of Invention

In order to reduce damage to the screw, both the concentricity and the axial pressure of the screw need to be adjusted, the utility model provides a dual function adjustment assembly.

In a first aspect, the present utility model provides a dual function adjustment assembly, which adopts the following technical scheme:

a dual function adjustment assembly for adjusting the central axis and axial pressure of a screw, the screw being provided with a thread section, a clamping groove and a keyway along the length direction of the screw, the adjustment assembly comprising:

a rotation shaft body having a first end surface;

the spline housing is provided with a second end face, and the second end face is in butt joint with the first end face; the spline housing is provided with a penetrating hole for the screw to penetrate, the inner wall of the penetrating hole is also provided with a convex rib, and the convex rib is slidingly connected in the key groove;

the buckle is clamped in the clamping groove of the screw rod, and the buckle is movably hooked at one end, far away from the rotating shaft body, of the spline housing along the axis direction of the screw rod;

the elastic connecting parts are connected between the rotating shaft body and the spline housing so as to adjust the central axis of the screw rod penetrating through the spline housing.

Optionally, the elastic connection component comprises a first threaded fastener, and the first threaded fastener passes through the second end face of the spline housing and is in threaded connection with the first end face of the rotating shaft body.

Optionally, the first end face is formed with a first groove, the second end face is formed with a first protrusion, the first protrusion extends into the first groove, and a gap is formed between the first protrusion and the first groove along the radial direction of the spline housing.

The first bulge and the first groove are cylindrical, the first bulge is formed by outwards extending the middle part of the second end face, and the first threaded fasteners are uniformly distributed and connected to the periphery of the first end face.

Optionally, a gap is formed between the first protrusion and the first groove along the length direction of the spline housing.

Optionally, along the length direction of the spline housing, a gap is formed between the second protrusion and the second groove.

Optionally, a clamping hole matched with the clamping groove is formed in the center of the buckle, and the clamping groove of the screw rod is clamped in the clamping hole; the inner wall of the buckle is provided with a second groove, the outer peripheral wall of one end of the spline housing, which is far away from the rotating shaft body, is outwards extended to form a second bulge, and the second bulge is movably hooked in the second groove.

Optionally, along the length direction of the spline housing, a gap is formed between the second protrusion and the second groove.

Optionally, the second protrusion is annular, the buckle includes two at least detachably connected buckle lamella, a plurality of buckle lamella joint in the joint groove encloses into annular, the second recess form in the inner wall of buckle lamella, the second protrusion movably collude in the second recess.

Optionally, a first maintenance hole is formed at one end of the spline housing, which is far away from the rotating shaft body, and a second maintenance hole is formed in the buckle, and the second maintenance hole is communicated with the first maintenance hole; the penetrating holes are through holes.

In a second aspect, the injection molding machine provided by the utility model adopts the following technical scheme:

the utility model provides an injection molding machine, includes frame, locking mechanism, melt adhesive mechanism and penetrates the mechanism, locking mechanism with penetrate the mechanism respectively fixed connection in the frame, penetrate the mechanism connect in the melt adhesive mechanism with material propelling movement in the melt adhesive mechanism arrives in the locking mechanism, the melt adhesive mechanism includes melt adhesive driving piece, screw rod and above-mentioned adjusting part, adjusting part's rotation axis body fixed connection in the power take off of melt adhesive driving piece, the screw rod wear to locate in the spline housing of adjusting part and joint in adjusting part's buckle.

In summary, the present utility model includes at least one of the following beneficial technical effects:

the concentricity of the screw is adjusted from the installation, namely from the root, so that the abrasion of parts caused by the eccentricity of the screw is reduced; the concentricity is adjusted by adjusting the tightness of the first threaded fastener, so that the operation is simple; the adjusting component enables the axial stress of the screw to be released, reduces the deformation of the screw, and protects the screw.

Drawings

FIG. 1 is a block diagram of a screw according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a screw and adjustment assembly of an embodiment of the present utility model.

FIG. 3 is a block diagram of a spline housing according to an embodiment of the present utility model.

Fig. 4 is an exploded view of an adjustment assembly and screw of an embodiment of the present utility model.

Fig. 5 is a schematic view of an injection molding machine according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a screw; 11. a threaded section; 12. a clamping groove; 13. a key slot; 2. an adjustment assembly; 21. a rotation shaft body; 211. a first end face; 2111. a first threaded hole; 2112. a first groove; 22. a spline housing; 221. a second end face; 2211. a first protrusion; 222. penetrating holes; 2221. a rib; 223. a first connection hole; 224. a second protrusion; 225. a first maintenance hole; 23. a buckle; 231. a clamping hole; 232. a second groove; 233. a buckle flap; 2331. a second connection hole; 2332. a second threaded hole; 234. second maintenance hole repair; 24. an elastic connection member; 241. a first threaded fastener; 25. a second threaded fastener; 3. a frame; 4. a mold closing mechanism; 5. a glue melting mechanism; 6. and the glue injection mechanism.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the screw 1 is provided with a thread section 11, a catching groove 12, and a key groove 13 for transmitting torque along its length direction. Typically, the central axis a of the screw 1 will be offset after installation.

Referring to fig. 2, an embodiment of the present utility model discloses a dual function adjustment assembly 2, the adjustment assembly 2 being used to adjust the concentricity of the screw 1. Whether the screw 1 is concentric or not is the fact that the own central axis a coincides with the reference axis of the screw 1 when the screw 1 rotates, which is the own central axis a when the screw 1 rotates with zero dimensional and installation deviation.

Referring to fig. 2, 3 and 4, the adjustment assembly 2 includes a rotation shaft body 21, a spline housing 22, a buckle 23 and a first threaded fastener 241. The rotation shaft body 21 has a first end surface 211. The spline housing 22 has a second end face 221, the second end face 221 abutting the first end face 211; the spline housing 22 has a penetration hole 222 for penetrating the screw 1, and a rib 2221 is further provided on the inner wall of the penetration hole 222, and the rib 2221 slides into the key groove 13 (see fig. 1). The buckle 23 is clamped in the clamping groove 12 of the screw 1 and is hooked at one end of the spline housing 22 away from the rotating shaft body 21, so as to prevent the screw 1 from being separated from the spline housing 22.

The elastic connection member 24 has a plurality of elastic connection members 24, and the elastic connection member 24 is connected between the rotation shaft body 21 and the spline housing 22 to adjust the central axis of the screw 1 penetrating into the spline housing 22.

The structural design principle of the dual-function adjusting assembly 2 is as follows: the screw 1 and the rotating shaft body 21 are not directly fixed, namely the screw 1 is separated from the rotating shaft body 21 through the spline housing 22; the screw 1 is driven by the minute movement of the spline housing 22, so that the central axis of the screw 1, that is, the concentricity of the screw 1 with respect to the rotation shaft body 21 is adjusted.

Meanwhile, the buckle 23 is movably hooked on the spline housing 22. When the density of the material in the charging barrel of the injection molding machine changes, the pressure of the material changes, the thrust force born by the screw 1 in the charging barrel changes, and the screw 1 drives the buckle 23 to move back and forth along the length direction of the spline housing 22, which is equivalent to the pressure release of the axial pressure of the screw 1, reduces the deformation of the screw 1 and the adjusting component 2, and protects the screw 1 and the adjusting component 2.

The elastic connecting component 24 comprises a first threaded fastener 241, and the first threaded fastener 241 is arranged on the second end surface 221 of the spline housing 22 in a penetrating manner and is connected in the first end surface 211 of the rotating shaft body 21 in a threaded manner; specifically, the spline housing 22 is provided with a plurality of first connection holes 223, the rotation shaft body 21 is provided with a plurality of first screw holes 2111, and the first screw fasteners 241 are threaded through the first connection holes 223 in a one-to-one correspondence and are screwed into the first screw holes 2111.

The specific adjusting steps of the dual-function adjusting assembly 2 are as follows: firstly, a rotating shaft body 21 is fixedly installed at a power output end, a spline housing 22 is arranged at the rotating shaft body 21 in a preset mode, meanwhile, a screw 1 is penetrated into the spline housing 22, a convex edge 2221 of the spline housing 22 is in sliding contact with a key slot 13 of the screw 1, and a buckle 23 is clamped in a clamping groove 12 of the screw 1 and is hooked at one end, far away from the rotating shaft body 21, of the spline housing 22; next, a measuring instrument (such as a dial indicator or a dial indicator) is mounted on the adjusting assembly 2, the screw 1 is rotated, and whether the central axis a of the screw 1 is deviated or not is measured; finally, the tightness of the first threaded fastener 241 is adjusted according to the offset, so that the concentricity of the screw 1 is adjusted. The concentricity adjusting method adjusts the skew of the screw 1 from the installation, and can obviously prolong the service lives of parts such as the screw 1, the charging barrel and the like.

Referring to fig. 2 and 4, in order to facilitate positioning of the second end surface 221 of the spline housing 22 at the first end surface 211 of the rotation shaft body 21, in the present embodiment, the first end surface 211 is formed with a first groove 2112, and the second end surface 221 is formed with a first projection 2211; in other embodiments, a first protrusion 2211 may also be formed for the first end surface 211 and a first groove 2112 may be formed for the second end surface 221. The first projection 2211 extends into the first recess 2112 to quickly locate the spline housing 22. In order to position the first protrusion 2211 and the first groove 2112 so as not to affect the movement of the spline housing 22 relative to the rotation shaft body 21, there is a gap b between the first protrusion 2211 and the first groove 2112 in a direction perpendicular to the length direction of the spline housing 22. Further, in order to be able to adjust the central axis a of the screw 1 from each angle of the circumference of the spline housing 22, i.e., to be able to move the spline housing 22 in the radial direction of itself, the first protrusions 2211 and the first grooves 2112 are each circular, and the first protrusions 2211 are formed by extending outwardly from the middle portion of the second end surface 221, and the first threaded fasteners 241 are uniformly distributed and connected to the periphery of the first end surface 211.

In order to reduce friction of the spline housing 22, a gap c is provided between the first protrusion 2211 and the first groove 2112 along the length of the spline housing 22. Specifically, the height of the first protrusion 2211 is less than the depth of the first groove 2112.

The buckle 23 is clamped in the clamping groove 12 of the screw 1 and is hooked at one end of the spline housing 22 away from the rotating shaft body 21. Specifically, the center of the buckle 23 is provided with a clamping hole 231, the clamping hole 231 is matched with the clamping groove 12, and the clamping groove 12 of the screw 1 is clamped in the clamping hole 231; the inner wall of the buckle 23 is formed with a second groove 232, the outer peripheral wall of one end of the spline housing 22 far away from the rotating shaft body 21 is outwardly extended to form a second protrusion 224, and the second protrusion 224 extends into the second groove 232.

Along the length of the spline housing 22, a gap d exists between the second protrusion 224 and the second recess 232. Specifically, the second protrusion 224 and the second groove 23 are both annular, and the thickness along the spline housing 224 is smaller than the width of the second groove 223. When the seal of the material in the barrel is changed, the screw 1 can move back and forth along the length direction of the screw, so that the pressure exerted on the screw 1 and the adjusting assembly 2 is released.

Referring to fig. 4, when the second protrusion 224 is annular, the processing is relatively convenient, but the hooking between the buckle 23 and the spline housing 22 cannot be achieved, so the buckle 23 includes at least two detachably connected buckle flaps 233, and the plurality of buckle flaps 233 are clamped in the clamping groove 12 to form an annular shape. Specifically, the fastening petals 233 are provided with a second connecting hole 2331 and a second threaded hole 2332, and the second connecting hole 2331 and the second threaded hole 2332 are correspondingly penetrated by the second threaded fastener 25 one by one, so that the fastening petals 233 are fixedly connected with each other and are fastened in the fastening groove 12 of the screw 1. The second groove 232 is formed on the inner wall of the latch flap 233, and the second protrusion 224 is movably hooked in the second groove 232.

Referring to fig. 2, for convenient cleaning and maintenance, it is generally necessary to rotate the screw 1, a first maintenance hole 225 is provided at an end of the spline housing 22 away from the rotation shaft body 21, a second maintenance hole 234 is provided at the fastener 23, and the second maintenance hole 234 is in communication with the first maintenance hole 225. Thus, the screw 1 can be easily rotated by inserting the shaft pins into the first and second service holes 225 and 234.

In the field of injection molding machines, typically, a pressure sensor is mounted at one end of the rotating shaft body 21 away from the spline housing 22, and back pressure applied to the rotating shaft body 21 is directly transmitted to the pressure sensor. And the pressure of the material in the barrel, to which the screw 1 is subjected, will move towards the rotating shaft body 21. In order to make the pressure sensor more accurately detect the pressure value of the material in the material cylinder, the through hole 222 of the spline housing 22 is a through hole (refer to fig. 2 or 3), so that the screw 1 directly abuts against the rotating shaft body 21 after receiving the pressure of the material in the material cylinder.

The embodiment of the utility model also discloses an injection molding machine.

Referring to fig. 2 and 5, the injection molding machine comprises a frame 3, a mold clamping mechanism 4, a melt adhesive mechanism 5 and a glue injection mechanism 6, wherein the mold clamping mechanism 4 and the glue injection mechanism 6 are respectively and fixedly connected to the frame 3, and the glue injection mechanism 6 is connected to the melt adhesive mechanism 5 to push materials in the melt adhesive mechanism 5 into the mold clamping mechanism 4. The melt adhesive mechanism 5 comprises a melt adhesive driving piece, a screw 1 and the adjusting assembly 2, wherein the rotating shaft body 21 of the adjusting assembly 2 is fixedly connected to the power output end of the melt adhesive driving piece, and the screw 1 is arranged in the spline housing 22 of the adjusting assembly 2 in a penetrating manner and is clamped in the buckle 23 of the adjusting assembly 2.

The embodiment of the utility model also discloses a concentricity adjusting method.

Referring to fig. 2, the concentricity adjusting method, which adjusts the concentricity of the screw 1 using the adjusting assembly 2 as described above, comprises the steps of:

a1, fixedly connecting a rotary shaft body 21 to a rotary power output end;

a2, adopting a first threaded fastener 241 to pre-position the spline housing 22 and the rotary shaft body 21 into a whole;

a3, penetrating the screw 1 into the spline housing 22, so that the convex edge 2221 of the spline housing 22 is in sliding contact with the key slot 13 of the screw 1;

a4, clamping the buckle 23 in the clamping groove 12 of the screw 1 and hooking one end of the spline housing 22 far away from the rotating shaft body 21;

a5, adjusting the tightness of the first threaded fastener 241 to adjust the central axis a of the screw 1.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. A dual function adjustment assembly (2) for central axis and axial pressure of adjusting screw (1), screw (1) are followed length direction of screw (1) is equipped with screw thread section (11), joint groove (12) and keyway (13), its characterized in that, adjustment assembly (2) include:

a rotation shaft body (21) having a first end surface (211);

a spline housing (22) having a second end surface (221), the second end surface (221) being abutted against the first end surface (211); the spline housing (22) is provided with a penetrating hole (222) for the screw (1) to penetrate, a convex rib (2221) is further arranged on the inner wall of the penetrating hole (222), and the convex rib (2221) is slidingly connected in the key slot (13);

the buckle (23) is clamped in the clamping groove (12) of the screw (1) and is movably hooked at one end of the spline housing (22) far away from the rotating shaft body (21);

the elastic connecting parts (24) are provided with a plurality of elastic connecting parts (24), and the elastic connecting parts (24) are connected between the rotating shaft body (21) and the spline housing (22) so as to adjust the central axis of the screw rod (1) penetrating through the spline housing (22).

2. The dual function adjustment assembly (2) of claim 1 wherein the loose connection component (24) includes a first threaded fastener (241), the first threaded fastener (241) passing through the second end face (221) of the spline housing (22) and threadably engaging within the first end face (211) of the rotating shaft body (21).

3. The dual function adjustment assembly (2) according to claim 2, wherein the first end surface (211) is formed with a first groove (2112) and the second end surface (221) is formed with a first protrusion (2211), the first protrusion (2211) extending into the first groove (2112) with a gap between the first protrusion (2211) and the first groove (2112) along a radial direction of the spline housing (22).

4. A dual function adjustment assembly (2) according to claim 3, wherein the first protrusion (2211) and the first groove (2112) are each cylindrical, and the first protrusion (2211) is formed by extending outwardly from a middle portion of the second end surface (221), and the first threaded fastener (241) is uniformly distributed and connected to a periphery of the first end surface (211).

5. A dual function adjustment assembly (2) according to claim 3, wherein there is a gap between the first protrusion (2211) and the first groove (2112) along the length of the spline housing (22).

6. The dual function adjustment assembly (2) according to claim 1, wherein a clamping hole (231) adapted to the clamping groove (12) is arranged in the center of the buckle (23), and the clamping groove (12) of the screw (1) is clamped in the clamping hole (231); the inner wall of the buckle (23) is provided with a second groove (232), the outer peripheral wall of one end, far away from the rotating shaft body (21), of the spline housing (22) is outwards extended to form a second protrusion (224), and the second protrusion (224) is movably hooked in the second groove (232).

7. The dual function adjustment assembly (2) of claim 6 wherein a gap exists between the second projection (224) and the second recess (232) along the length of the spline housing (22).

8. The dual function adjustment assembly (2) of claim 6, wherein the second protrusion (224) is annular, the buckle (23) includes at least two detachably connected buckle flaps (233), a plurality of the buckle flaps (233) are clamped in the clamping groove (12) to form an annular shape, the second groove (232) is formed in an inner wall of the buckle flaps (233), and the second protrusion (224) is movably hooked in the second groove (232).

9. The dual function adjustment assembly (2) of claim 1 wherein a first service hole (225) is provided at an end of the spline housing (22) remote from the rotating shaft body (21), the clasp (23) is provided with a second service hole (234), the second service hole (234) being in communication with the first service hole (225); the through hole (222) is a through hole.

10. Injection molding machine, including frame (3), locking mechanism (4), melt adhesive mechanism (5) and penetrate gluey mechanism (6), locking mechanism (4) with penetrate gluey mechanism (6) respectively fixed connection in frame (3), penetrate gluey mechanism (6) connect in melt adhesive mechanism (5) with material propelling movement in the melt adhesive mechanism (5) to in locking mechanism (4), characterized in that, melt adhesive mechanism (5) include melt adhesive driving piece, screw rod (1) and regulation subassembly (2) according to any one of claims 1-7, rotation axis body (21) fixed connection of regulation subassembly (2) in the power take off end of melt adhesive driving piece, screw rod (1) wear to locate in spline housing (22) of regulation subassembly (2) and joint in buckle (23) of regulation subassembly (2).