CN217752683U

CN217752683U - Extrusion die head

Info

Publication number: CN217752683U
Application number: CN202222110389.8U
Authority: CN
Inventors: 芮英华; 其他发明人请求不公开姓名
Original assignee: Xiamen Shuangfeiren Plastic Co ltd
Current assignee: Xiamen Shuangfeiren Plastic Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-11-08
Anticipated expiration: 2032-08-11

Abstract

The utility model provides an extrusion die for extrude the operation to the sizing material, form the preforming body. The extrusion die head comprises a die, a spreader cone and an adjusting assembly. The neck ring mold is sleeved at one end of the sprue spreader, and an extrusion gap is formed between the inner side wall of the neck ring mold and the outer side wall of the sprue spreader. The compound is initially formed through the extrusion gap. The adjusting assembly is arranged on the outer side of the neck mold and used for adjusting the width of the extrusion gap. The utility model provides a pair of extrusion die adjusts the width in extrusion clearance through adjusting part, in time adjusts the wall thickness size of preforming body, guarantees off-the-shelf wall thickness size stability.

Description

Extrusion die head

Technical Field

The utility model relates to a material extrusion moulding technical field, concretely relates to extrusion die head.

Background

The fluorescent glass lamp tube is widely applied in life. The fluorescent glass lamp tube is easy to break in use, the milky white treatment process of the fluorescent glass lamp tube is complex, and the uniformity of the treated light is not good. In addition, the fluorescent glass lamp tube is free of clamping pins, the lamp panel can only be fixed by gluing, and the stability is poor. Therefore, in some LED glass lamp tube products, an ultrathin inner sleeve tube formed by PC extrusion is usually added in the glass lamp tube, so that when the glass lamp tube is broken, the inside is buffered to reduce the breaking impact; meanwhile, an inner sleeve with a milky white diffusion effect is added into the glass lamp tube, so that the whole light emitting effect is uniform; in addition, the inner sleeve can be also used as a plurality of clamping pin structures to fix the lamp panel. However, the inner sleeve glass tube formed by extrusion is generally very thin, the stability of the extrusion forming size is poor, and the problem of uneven wall thickness of the product is easy to occur.

Disclosure of Invention

In view of this, the utility model aims to provide a configuration optimization's extrusion die.

In order to realize the purpose of the utility model, the utility model provides an extrusion die head for extrude the operation to the sizing material, form the preforming body. The extrusion die head comprises a die, a spreader cone and an adjusting assembly. The neck ring mold is sleeved at one end of the sprue spreader, and an extrusion gap is formed between the inner side wall of the neck ring mold and the outer side wall of the sprue spreader. The compound is initially formed through the extrusion gap. The adjusting assembly is arranged on the outer side of the neck mold and used for adjusting the width of the extrusion gap.

Optionally, the adjustment assembly comprises an adjustment ring and at least one adjustment bolt. The adjusting ring is sleeved on the outer side of the mouth mold. And the at least one adjusting bolt penetrates through the adjusting ring and is abutted with the neck mold.

Optionally, the at least one adjustment bolt comprises six adjustment bolts. The adjusting ring is provided with six adjusting holes at equal intervals along the axial direction. And the six adjusting bolts are respectively penetrated in the six adjusting holes and are respectively abutted with the neck ring mold.

Optionally, the adjustment assembly further comprises a bracket plate and six fixing bolts. The support plate is sleeved on the outer side of the neck mold. The support plate is provided with six first fixing holes along the radial direction. The adjusting ring is correspondingly provided with six second fixing holes along the radial direction. The six second fixing holes and the six adjusting holes are arranged in a staggered mode. The six second fixing holes and the six first fixing holes are arranged in a one-to-one correspondence mode. The six fixing bolts penetrate through the first fixing hole and the second fixing hole to fixedly connect the support plate with the adjusting ring.

Optionally, the extrusion die further comprises a neck. The machine neck is arranged on one side of the flow distribution cone. And a sizing material flow passage is arranged in the machine neck.

Optionally, the length dimension of the sizing material runner ranges from 120 mm to 150mm.

Optionally, the diverter cone includes an annular body, a diverter end, and a deflector end. The flow distribution end and the flow guide end are respectively positioned on two sides of the annular main body and are integrally formed with the annular main body. The extrusion gap is arranged between the mouth mold and the flow guide end of the flow distribution cone. The machine neck is arranged above the shunting end of the shunting cone. The annular main body is lapped on the upper end of the neck ring mold.

Optionally, the annular body is provided with a diverter hole. And the rubber material flows through the shunting holes from the rubber material flow passage and then enters the extrusion gap.

Optionally, the extrusion die further comprises a die core. The mold core is arranged in the mouth mold and is connected with the flow guide end of the flow distribution cone.

Optionally, an extrusion die orifice is arranged between the outer side wall of the die core and the inner side wall of the die. The compound is extruded from the extrusion die to form the preform.

The utility model provides a pair of extrusion die adjusts the width in extrusion clearance through adjusting part, in time adjusts the wall thickness size of preforming body, guarantees off-the-shelf wall thickness size stability. In addition, the size of the sizing material runner of the lengthening extrusion die head can effectively release extrusion pressure, and the flow stability of the sizing material in the extrusion die head is improved, so that the sizing is uniform, and the wall thickness of a finished product is further stable.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 is the utility model provides a structural schematic diagram of an extrusion die head.

Fig. 2 is an exploded view of the extrusion die of fig. 1.

Fig. 3 is a schematic plan view of the extrusion die of fig. 1.

Fig. 4 isbase:Sub>A cross-sectional view of the extrusion die of fig. 3 taken along linebase:Sub>A-base:Sub>A.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the described embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides an extrusion die 100 for performing an extrusion operation on a gum material to form a preform. In this embodiment, the rubber is heated and melted, and then fed into the extrusion die 100, and after being extruded through the extrusion die 100 to form a preform, the preform is introduced into a sizing die by manual or mechanical pulling to perform a cooling sizing operation, thereby forming a target molded body. The compound was a molten PC material (polycarbonate). In other embodiments, the sizing material may be other materials such as melted acrylic. The rubber material is extruded and molded through the extrusion die head 100 provided by the embodiment, so that the lamp product with the target molded body has stable wall thickness, good molding effect and high optical precision.

Referring to fig. 2-4, extrusion die 100 includes a core 110, a die 120, a diverter cone 130, a conditioning assembly 140, and a neck 150. The mold core 110 is disposed inside the die 120 and connected to the diverging cone 130. The mouthpiece 120 is sleeved on one end of the diverging cone 130. An extrusion gap 101 is arranged between the inner side wall 121 of the neck ring 120 and the outer side wall of the sprue spreader 130. The compound is initially formed through the extrusion gap 101. The throat 150 is disposed at one side of the diverging cone 130. An adjustment assembly 140 is provided outside the die 120 for adjusting the width of the extrusion gap 101. The sizing material flows through the extrusion gap 101, and the width of the extrusion gap 101 is adjusted by the adjusting assembly 140, so that the wall thickness of the pre-forming body can be adjusted in time, and the wall thickness of the finished product is stable.

Referring to fig. 2-4, the die 120 is a cylindrical structure. An extrusion die orifice 160 is provided between the inner sidewall 121 of the die 120 and the outer sidewall 111 of the die core 110. The compound is extruded through an extrusion die 160 to form a preform.

Referring to fig. 2-4, the diverter cone 130 includes an annular body 131, a diverter end 132, and a flow directing end 133. The diversion end 132 and the diversion end 133 are respectively located at two sides of the annular body 131 and are integrally formed with the annular body 131. The extrusion gap 101 is disposed between the die 120 and the flow-guiding end 133 of the skimmer cone 130. Neck 150 is disposed above diverging end 132 of diverging cone 130. The annular body 131 is attached to the upper end of the die 120. The mold core 110 is fixedly connected with the flow guiding end 133 of the flow dividing cone 130 through a bolt 1101. The annular body 131 is provided with a diversion hole 1311. The compound enters the extrusion gap 101 through the split orifice 1311 and is extruded through the extrusion die 160 to form a preform.

Referring to fig. 2-4, the adjustment assembly 140 includes an adjustment ring 141, six adjustment bolts 142, a bracket plate 143, and six fixing bolts 144. The adjusting ring 141 is sleeved outside the mouthpiece 120. The supporting plate 143 is also sleeved outside the mouthpiece 120 and is disposed opposite to the adjusting ring 141. The adjusting ring 141 is provided with six adjusting holes 1411 at equal intervals in the axial direction. Six adjusting bolts 142 are respectively inserted into the six adjusting holes 1411 and respectively abut against the outer side wall 122 of the die 120 to adjust the width of the extrusion gap 101 in the axial direction. The holder plate 143 is radially provided with six first fixing holes 1431. The adjusting ring 141 is provided with six second fixing holes 1412 in a radial direction, respectively. The six second fixing holes 1412 are staggered with the six adjusting holes 1411. The six first fixing holes 1431 correspond to the six second fixing holes 1412 one to one. Six fixing bolts 144 are inserted into the six first fixing holes 1431 and the six second fixing holes 1412 to fixedly connect the holder plate 143 and the adjusting ring 141 in the radial direction, so as to limit the movement of the adjusting ring 141 when the adjusting bolt 142 adjusts the width of the extrusion gap 101. The six adjusting bolts 142 are uniformly distributed in the axial direction to uniformly adjust the width of the extrusion gap 101 in the axial direction, maintaining the wall thickness dimension of the preform stable. In the present embodiment, the number of the adjusting bolts 142 and the fixing bolts 144 is six. In other embodiments, the number of the adjusting bolts 142 and the fixing bolts 144 may be one, two or more.

Referring to fig. 2-4, a glue flow channel 151 is provided in the neck 150. The size range of the length L of the glue runner 151 is 120-150mm. The glue material flow channel 151, the flow distribution holes 1311, the extrusion gap 101 and the extrusion die 160 form a through channel in sequence for the glue material to pass through. The rubber material is split by the rubber material flow channel 151 through the split holes 1311 and enters the extrusion gap 101. In this embodiment, the length L of the rubber material flow channel 151 is large, so that the extrusion pressure can be effectively released, the stability of rubber material flowing is favorably improved, the pressure drop is reduced, the rubber material can smoothly pass through the flow splitting holes 1311, the residual stress is reduced, and the rubber material can be stably transited to the extrusion die orifice 160, so that the wall thickness of the preformed body is stabilized. In this embodiment, the rubber material is heated and melted, and then fed into the extrusion die head 100, and the rubber material flows through the diversion hole 1311 from the rubber material flow channel 151, then enters the extrusion gap 101, and is extruded through the extrusion die orifice 160 to form a preform, and then is introduced into the sizing die by manual or mechanical traction to perform cooling and sizing operations.

While the description and drawings of the present invention have been given for the purpose of illustration and description, it will be understood by those skilled in the art that these embodiments are not intended to limit the scope of the present invention, but are capable of modification in various forms and details without departing from the spirit and scope of the present invention. Therefore, the scope of the present disclosure is not limited to the above embodiments, but should be determined by the claims and the equivalents thereof.

Claims

1. The extrusion die head is used for extruding rubber materials to form a preformed body and is characterized by comprising a die, a sprue spreader and an adjusting assembly, wherein the die is sleeved at one end of the sprue spreader, an extrusion gap is formed between the inner side wall of the die and the outer side wall of the sprue spreader, the rubber materials are preliminarily formed through the extrusion gap, and the adjusting assembly is arranged on the outer side of the die and used for adjusting the width of the extrusion gap.

2. The extrusion die of claim 1, wherein said adjustment assembly comprises an adjustment ring and at least one adjustment bolt, said adjustment ring being disposed around an outside of said die, said at least one adjustment bolt passing through said adjustment ring and abutting said die.

3. The extrusion die of claim 2, wherein said at least one adjustment bolt comprises six adjustment bolts, said adjustment ring having six adjustment holes axially equally spaced, said six adjustment bolts being respectively inserted through said six adjustment holes and respectively abutting said die.

4. The extrusion die head according to claim 3, wherein the adjusting assembly further comprises a supporting plate and six fixing bolts, the supporting plate is sleeved outside the die, the supporting plate is provided with six first fixing holes along a radial direction, the adjusting ring is provided with six second fixing holes along a radial direction, the six second fixing holes are staggered with the six adjusting holes, the six second fixing holes are in one-to-one correspondence with the six first fixing holes, and the six fixing bolts are inserted into the first fixing holes and the second fixing holes to fixedly connect the supporting plate with the adjusting ring.

5. The extrusion die of claim 1, further comprising a neck disposed on one side of the skimmer cone, wherein the neck has a flow path for the gum material.

6. An extrusion die according to claim 5, wherein the length dimension of the compound flow channel is in the range of 120 to 150mm.

7. The extrusion die of claim 6, wherein the diverter cone comprises an annular main body, a diverter end and a diverter end, the diverter end and the diverter end are respectively located on two sides of the annular main body and are integrally formed with the annular main body, the extrusion gap is arranged between the die and the diverter end of the diverter cone, the neck is arranged above the diverter end of the diverter cone, and the annular main body is lapped on the upper end of the die.

8. The extrusion die of claim 7, wherein the annular body is provided with a diversion hole, and the rubber material flows through the diversion hole from the rubber material flow passage and then enters the extrusion gap.

9. The extrusion die of claim 8, further comprising a core disposed within the die and coupled to the flow-directing end of the skimmer cone.

10. An extrusion die as in claim 9, wherein an extrusion die opening is provided between the outer sidewall of said core and said inner sidewall of said die, said compound being extruded through said extrusion die opening to form said preform.