CN215095474U

CN215095474U - Plastic extruder mandrel

Info

Publication number: CN215095474U
Application number: CN202121462049.0U
Authority: CN
Inventors: 李坤
Original assignee: Nanjing Kunlun Machinery Co ltd
Current assignee: Nanjing Kunlun Machinery Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-10
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a plastic extruder mandrel and a rotating shaft; the matching thread is arranged on the rotating shaft and comprises a head thread and a connecting thread, connecting pieces are arranged in the head thread and the connecting thread, and a connecting rod is arranged at the top of the connecting thread; the rotating shaft part is provided with threads; the matching screw thread comprises one head screw thread and a plurality of connecting screw threads; the utility model provides a plastic extruder dabber can provide the supporting grinding apparatus of dabber of a simple and easy installation to on the linkage segment between mould and the mould is distributed to the main axle central force when will rotate, increase the stress area, it is more stable, reach through twisting reverse when demolising, more laborsaving, save the installation time of part.

Description

Plastic extruder mandrel

Technical Field

The utility model relates to a technical field of extrusion equipment especially relates to a plastics extruder dabber.

Background

In the plastic extrusion molding equipment, the plastic extruder is generally called a main machine, and the subsequent equipment matched with the plastic extruder is called an auxiliary machine. After the development of the plastic extruder for more than 100 years, multiple types of double screws, multiple screws and even no screws and the like are derived from the original single screw. The plastic extruder (main machine) can be matched with various plastic forming auxiliary machines for pipe material, film, bar material, monofilament, flat filament, packing belt, extruding net, plate (sheet) material, profiled bar, granulating and cable covering, etc. to form various plastic extrusion forming production lines to produce various plastic products. Therefore, the plastic extrusion molding machine is one of the machines widely used in the plastic processing industry at present or in the future.

The machine head is composed of an alloy steel inner sleeve and a carbon steel outer sleeve, a forming die is arranged in the machine head, and the machine head is used for converting plastic melt in rotary motion into parallel linear motion, uniformly and stably guiding the plastic melt into the die sleeve, and endowing necessary forming pressure to the plastic. The plastic is plasticized and compacted in the machine barrel, flows into a machine head forming die through a porous filter plate along a certain flow passage through a machine head neck, and is properly matched with a die core die sleeve to form an annular gap with a continuously reduced section, so that the plastic melt forms a continuous and compact tubular coating layer around the core wire. In order to ensure that a plastic flow channel in the machine head is reasonable and eliminate dead angles for storing plastic, a shunt sleeve is often arranged, and a grading ring is also arranged for eliminating pressure fluctuation during plastic extrusion. The machine head is also provided with a mould correcting and adjusting device which is convenient for adjusting and correcting the concentricity of the mould core and the mould sleeve. Supporting product usually through according to the stripe embedding on the dabber in the current machine dabber, and each part cup joints and all need aim at the stripe on the dabber pole portion, and very big extension installation time, the dabber uses pole portion stripe can be worn and torn after a long time, influences follow-up use and product preparation finished product not good.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the above problems existing in the prior plastic extruder mandrel, the utility model discloses a plastic extruder mandrel has been proposed.

Therefore, the utility model aims at providing a plastic extruder dabber, it can provide the supporting grinding apparatus of dabber of a simple and easy installation to on distributing the main axle power when rotatory the linkage segment between grinding apparatus and the grinding apparatus, increase the stress area, it is more stable.

In order to solve the technical problem, the utility model provides a following technical scheme: a plastic extruder mandrel, a rotating shaft; the matching thread is arranged on the rotating shaft and comprises a head thread and a connecting thread, connecting pieces are arranged inside the head thread and the connecting thread, and a connecting rod is further arranged at the top of the connecting thread.

As an optimized scheme of the plastic extruder mandrel, wherein: the rotating shaft rod part is provided with threads.

As an optimized scheme of the plastic extruder mandrel, wherein: the mating threads include one of the head threads and a plurality of connecting threads.

As an optimized scheme of the plastic extruder mandrel, wherein: the center of the head thread is provided with a matching thread with the same specification as the thread, and the periphery of the head thread can be made into different lines.

As an optimized scheme of the plastic extruder mandrel, wherein: the bottom of the head thread and the bottom of the connecting thread are provided with grooves, the grooves are circular, passages are symmetrically formed in the two sides of the diameter of the circle center, buffer cavities are formed in the head thread, and the buffer cavities are communicated with the grooves.

As an optimized scheme of the plastic extruder mandrel, wherein: the connecting piece set up in the cushion chamber, including spring and stripper plate, the spring according to the circumference evenly set up in inside the cushion chamber, and be provided with a plurality of.

As an optimized scheme of the plastic extruder mandrel, wherein: the extrusion plate is connected with the spring, the spring is in a compressed state in an initial state, and the extrusion plate is connected with the spring and abuts against the top of the buffer cavity.

As an optimized scheme of the plastic extruder mandrel, wherein: the top of the buffer cavity is also symmetrically provided with limiting grooves which are arranged oppositely, and the connecting line of the limiting grooves and the connecting line of the two channels are vertical to each other.

As an optimized scheme of the plastic extruder mandrel, wherein: circular through-hole has been seted up to connecting thread central authorities, through-hole radial diameter with rotation axis radial diameter is the same, connecting thread keeps away from the symmetry is provided with in the one side of recess the connecting rod, the connecting rod top is provided with rolls over the ear, it is greater than to roll over the ear width the recess width, and it is less than the passageway width.

As an optimized scheme of the plastic extruder mandrel, wherein: the length of the connecting rod is equal to the depth of the channel, and the thickness of the folded lug is the same as the height of the limiting groove.

The utility model has the advantages that:

the utility model provides a plastic extruder dabber can provide the supporting grinding apparatus of dabber of a simple and easy installation to on the linkage segment between mould and the mould is distributed to the main axle central force when will rotate, increase the stress area, it is more stable, reach through twisting reverse when demolising, more laborsaving, save the installation time of part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is the overall structure schematic diagram of the plastic extruder mandrel of the present invention.

Fig. 2 is a schematic view of the structure of the rotating shaft of the plastic extruder mandrel of the present invention.

Fig. 3 is a schematic view of the head thread structure of the mandrel of the plastic extruder of the present invention.

Fig. 4 is a cross-sectional view of the head thread structure of the mandrel of the plastic extruder of the present invention.

Fig. 5 is a cross-sectional view of the connection thread structure of the plastic extruder mandrel of the present invention.

Fig. 6 is a partial enlarged view of the whole structure of the mandrel of the plastic extruder of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Furthermore, the present invention will be described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Example 1

Referring to fig. 1, for a first embodiment of the present invention, a mandrel for a plastic extruder is provided, which comprises a rotating shaft 100 and a matching screw thread 200, wherein the rotating shaft 100; the matching thread 200 is arranged on the rotating shaft 100 and comprises a head thread 201 and a connecting thread 202, connecting pieces 203 are arranged inside the head thread 201 and the connecting thread 202, and a connecting rod 204 is further arranged at the top of the connecting thread 202.

The rotating shaft 100 is used for providing rotation and bearing all the die threads and the matched threads 200, the matched threads 200 are used for being sleeved on the rotating shaft 100 and connected together, acting force originally connected with the rotating shaft 100 is transferred to connecting force between the matched threads 200 through fixing pieces between the matched threads 200, the head threads 201 are only matched pieces connected with the rotating shaft 100 through the threads 101 and also connected between the rotating shaft 100 and the matched threads 200, the connecting threads 202 are provided with a plurality of connecting threads 202, the connecting threads 201 are sequentially connected, rotating force is provided through the connecting rods 204 instead of being rigidly connected with the rotating shaft and then rotated, the connecting pieces 203 and the connecting rods 204 are matched and buckled, the head threads 201 and the connecting threads 202 are connected and fixed together and are enabled to rotate together, and the effect of a mandrel is achieved.

Example 2

Referring to fig. 2 to 6, a second embodiment of the present invention is different from the first embodiment in that: the shaft 100 is provided at the shaft portion with a screw thread 101. The mating threads 200 include one of the head threads 201 and a plurality of connecting threads 202. The head thread 201 is provided at the center with a matching thread 102 having the same specification as the thread 101, and the periphery thereof can be made into different lines. The bottom of the head thread 201 and the bottom of the connecting thread 202 are provided with grooves 203a, the grooves 203a are circular, the grooves 203a are symmetrically provided with channels 203b passing through the two sides of the circle center diameter, the inside of the head thread is also provided with a buffer cavity 203c, and the buffer cavity 203c is communicated with the grooves 203 a.

The connecting piece 203 is arranged in the buffer cavity 203c and comprises a spring 203d and an extrusion plate 203e, wherein the spring 203d is uniformly arranged in the buffer cavity 203c according to the circumference and is provided with a plurality of springs. The pressing plate 203e is connected with the spring 203d, the spring 203d is in a compressed state in an initial state, and the pressing plate 203e is connected with the spring 203d and abuts against the top of the buffer cavity 203 c. The top of the buffer cavity 203c is also symmetrically provided with limiting grooves 203f, the limiting grooves 203f are arranged oppositely, and the connecting line of the two limiting grooves 203f is vertical to the connecting line of the two channels 203 b.

A circular through hole 202a is formed in the center of the connecting thread 202, the radial diameter of the through hole 202a is the same as that of the rotating shaft 100, the connecting rods 204 are symmetrically arranged on one surface, away from the groove 203a, of the connecting thread 202, a folded lug 204a is arranged at the top of each connecting rod 204, and the width of each folded lug 204a is larger than that of the groove 203a and smaller than that of the channel 203 b. The length of the connecting rod 204 is equal to the depth of the channel 203b, and the thickness of the folded lug 204a is the same as the height of the limiting groove 203 f.

Compared with the embodiment 1, further, the head thread 201 and the connecting thread 202 are provided with the grooves 203a at the bottom, the grooves 203a are symmetrically provided with the channels 203b on one diameter, the bottom of the channel 203b is communicated with the buffer cavity 203c, the springs 203d are uniformly provided on the inner circumference of the buffer cavity 203c, the extrusion plate 203e is supported on the top of the buffer cavity 203c due to the expansion force of the springs 203d, the top of the buffer cavity 203c is further symmetrically provided with the limit grooves 203f, the limit grooves 203f are oppositely arranged, and the connecting line of the two grooves is perpendicular to the connecting line of the two channels 203b, namely, the upper folding lug 204a of the connecting rod 204 is contacted with the extrusion plate 203e when being inserted into the channel 203b, the spring 203d is extruded by continuously applying pressure, the extrusion plate 203e shrinks downwards, at this time, the connecting thread 202 rotates ninety degrees, the folding lug 204a rotates to the limit groove 203f, the spring 203d pushes the folding lug 204a into the limit groove 203f through the extrusion plate 203e due to the restoring force, the extrusion plate 203e is abutted against the top of the buffer cavity 203c again, the connecting thread 202 is limited on a vertical section, the connecting thread 202 can rotate together according to the connecting thread 202 connected with the extrusion plate, the connecting thread 202 on the previous position rotates together with the connecting thread 202 on the previous position until the head thread 201 is traced back, the head thread 201 is connected with the thread 101 on the rotating shaft 100, main rotating force is provided, and the connecting thread 202 can be sequentially dismounted only by reversely operating the above steps during dismounting.

The rest of the structure is the same as that of embodiment 1.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A plastic extruder mandrel is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a rotating shaft (100);

the matching thread (200) is arranged on the rotating shaft (100) and comprises a head thread (201) and a connecting thread (202), connecting pieces (203) are arranged inside the head thread (201) and the connecting thread (202), and a connecting rod (204) is further arranged at the top of the connecting thread (202).

2. A plastic extruder mandrel as claimed in claim 1 wherein: the rod part of the rotating shaft (100) is provided with a thread (101).

3. A plastics extruder mandrel as claimed in claim 1 or claim 2 wherein: the mating thread (200) comprises one head thread (201) and a plurality of connecting threads (202).

4. A plastic extruder mandrel as claimed in claim 2 wherein: the center of the head thread (201) is provided with a matching thread (102) with the same specification as the thread (101), and the periphery of the head thread can be made into different lines.

5. A plastic extruder mandrel as claimed in claim 4 wherein: head screw thread (201) and connecting thread (202) bottom are seted up fluted (203a), recess (203a) are the ring form, and it crosses centre of a circle diameter bilateral symmetry and has seted up passageway (203b), buffer chamber (203c) have still been seted up to head screw thread inside, buffer chamber (203c) and recess (203a) intercommunication.

6. A plastic extruder mandrel as claimed in claim 5 wherein: the connecting piece (203) is arranged in the buffer cavity (203c) and comprises a spring (203d) and an extrusion plate (203e), wherein the spring (203d) is uniformly arranged in the buffer cavity (203c) according to the circumference and is provided with a plurality of springs.

7. A plastic extruder mandrel as claimed in claim 6 wherein: the extrusion plate (203e) is connected with the spring (203d), the spring (203d) is in a compressed state in an initial state, and the extrusion plate (203e) is connected with the spring (203d) and is abutted against the top of the buffer cavity (203 c).

8. A plastic extruder mandrel as claimed in claim 7 wherein: the top of the buffer cavity (203c) is also symmetrically provided with limiting grooves (203f), the limiting grooves (203f) are arranged oppositely, and the connecting line of the limiting grooves (203f) is vertical to the connecting line of the two channels (203 b).

9. A plastic extruder mandrel as claimed in claim 8 wherein: a circular through hole (202a) is formed in the center of the connecting thread (202), the radial diameter of the through hole (202a) is the same as that of the rotating shaft (100), the connecting rod (204) is symmetrically arranged on one surface, away from the groove (203a), of the connecting thread (202), a folding lug (204a) is arranged at the top of the connecting rod (204), and the width of the folding lug (204a) is larger than that of the groove (203a) and smaller than that of the channel (203 b).

10. A plastic extruder mandrel as claimed in claim 9 wherein: the length of the connecting rod (204) is equal to the depth of the channel (203b), and the thickness of the folded lug (204a) is the same as the height of the limiting groove (203 f).