Polymerase chain reaction (PCR) sidewall extrusion combined plate

Abstract

The utility model provides a PCR (Polymerase Chain Reaction) tire sidewall extrusion composition plate, which solves the technical problems that when an existing tire sidewall is extruded, the shape of a rubber runner outlet of a pre-die is controlled, but most of the pre-die is a whole, when the tire sidewall of a new size is produced, the tire sidewall needs to be redesigned and processed, time and labor are wasted, and the production efficiency is reduced. The method can be widely applied to the tire production field; the tire sidewall extrusion die specifically comprises a preformed die plate and a die plate, a clamping groove is formed in the back face of the die plate and matched with the preformed die plate in shape, two tire sidewall extrusion channels are symmetrically formed in the die plate about the vertical center line, and a tire sidewall extrusion outlet is the same as a tire sidewall needing to be produced in shape. A composite surface forming groove is formed in one side, close to a vertical center line, of the bottom surface of the sidewall extrusion opening; the mouth-shaped plate is divided into an upper plate and a lower plate by taking the joint of the sidewall extrusion channel and the composite surface forming groove as a boundary line, and is used for combining the sidewall extrusion channels and the composite surface forming grooves with different sizes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tire production technical field, especially relate to a PCR tire side extrusion combination board. BACKGROUND

[0002] With the development of society, the car has become the necessity of modern life. And the tire is good or not, to the comfort, operability, safety and so on have the vital role. The tire is through the pre mouth shape formation compound interface, the tire specification, the diversified development of category, make the size coverage is wider, so the tread compound extrusion pre mouth shape is increasing. And according to the demand, often need to frequently change various specifications of pre mouth shape.

[0003] The existing tire side is extruded, and the glue flow channel outlet shape of pre mouth shape is controlled, but most pre mouth shapes are a whole edition, when producing new size tire side, re-design and processing are needed, which is time-consuming and laborious, and reduces production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical deficiency of above, provide a kind of PCR tire side extrusion combination board.

[0005] Therefore, the utility model provides a kind of PCR tire side extrusion combination board, including pre mouth shape board and mouth shape board, pre mouth shape board is the four prism shape of trapezoidal side, mouth shape board back is equipped with the clamping slot, clamping slot and the shape of pre mouth shape board are compatible, mouth shape board is about vertical center line and is equipped with two tire side extrusion passageways, and the shape of tire side extrusion outlet is identical with the tire side shape needed to produce, and the bottom surface of tire side extrusion entrance is equipped with the compound surface forming groove near the side of vertical center line;Mouth shape board is divided into two plates for the junction of tire side extrusion passageway and compound surface forming groove, and is used for the combination of different size tire side extrusion passageway and compound surface forming groove.

[0006] Further, the compound surface forming groove includes inclined plane groove and plane groove, and the inclined plane groove is closer to the vertical center line than the plane groove;The slope of inclined plane groove is equal to the slope of tire side compound surface;The depth of plane groove is 10mm more than the maximum thickness of tire side compound surface;The width of inclined plane groove is equal to the distance from the end point of tire side compound surface to the maximum thickness.

[0007] Further, the top of pre mouth shape board is equipped with two top surface open shoulder pad glue flow channels symmetrical to the vertical center line, and the width of shoulder pad glue flow channel gradually narrows from shoulder pad glue entrance to shoulder pad glue outlet.

[0008] The bottom of pre mouth shape board is equipped with two sub mouth glue flow channels symmetrical to the vertical center line, and the two sub mouth glue flow channels are away from the vertical center line from the back of pre mouth shape board to pre mouth shape board, and the width of sub mouth glue flow channel gradually narrows from sub mouth glue entrance to sub mouth glue outlet.

[0009] The utility model provides a kind of PCR sidewall extrusion combination board, with following beneficial effects:

[0010] The utility model discards the design idea of controlling the size of sidewall by pre-die rubber flow channel outlet, uses the shape of extrusion outlet of detachable combination die plate to control the shape of sidewall, and adjusts the size of composite surface between sidewall rubber and sub-port rubber by composite surface forming groove, to meet the demand of different sidewall specifications. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural diagram of the utility model;

[0012] Figure 2 It is the front view of the pre-die plate of the utility model;

[0013] Figure 3 It is the rear view of the pre-die plate of the utility model;

[0014] Figure 4 It is Figure 2 Sectional view along D-D;

[0015] Figure 5 It is Figure 2 Sectional view along C-C;

[0016] Figure 6 It is the front view of the die plate of the utility model;

[0017] Figure 7 It is the top view sectional view of the composite surface forming groove of the utility model;

[0018] Figure 8 It is the size diagram of the sidewall of tire;

[0019] Marked in drawing: 1, pre-die plate;2, shoulder pad rubber outlet;3, sidewall rubber outlet;4, sub-port rubber outlet;5, shoulder pad rubber flow channel;6, sidewall rubber flow channel;7, sub-port rubber flow channel;8, shoulder pad rubber inlet;9, sidewall rubber inlet;10, sub-port rubber inlet;11, die plate;12, sidewall extrusion outlet;13, sidewall extrusion inlet;14, composite surface forming groove;15, bevel groove;16, flat groove;17, first threaded hole;18, second threaded hole. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with drawing and specific embodiment, to help understanding the content of the utility model.The method used in the utility model is conventional method if no special provision;Raw material and device used are conventional market product if no special provision.

[0021] For example, Figure 1As shown, the utility model provides a kind of PCR side extrusion combination board, including pre mouth plate 1 and mouth plate 11, pre mouth plate 1 is the trapezoidal shape of four prism of side face.

[0022] As Figures 2-5 As shown, the top of pre mouth plate 1 is equipped with two top surface open shoulder pad glue flow channels 5 symmetrical to vertical center line, and the width of shoulder pad glue flow channel 5 gradually narrows from shoulder pad glue inlet 8 to shoulder pad glue outlet 10.The width of shoulder pad glue inlet 8 is 160mm, and the height is 20mm;The side of shoulder pad glue inlet 8 close to vertical center line is 165mm away from vertical center line;The width of shoulder pad glue outlet 2 is 140mm, and the height is 10mm, and the side of shoulder pad glue outlet 2 close to vertical center line is 175mm away from vertical center line.

[0023] The middle part of pre mouth plate 1 is equipped with two side rubber flow channels 6 symmetrical to vertical center line, and the width of side rubber flow channel 6 does not change from side rubber inlet 9 to side rubber outlet 3.The width of side rubber inlet 9 is 300mm, and the height is 25mm, and the side of side rubber inlet 9 close to vertical center line is 25mm away from vertical center line;The width of side rubber outlet 3 is 300mm, and the height is 12mm, and the side of side rubber outlet 3 close to vertical center line is 65mm away from vertical center line.

[0024] The bottom of pre mouth plate 1 is equipped with two sub mouth rubber flow channels 7 symmetrical to vertical center line, and the direction of two sub mouth rubber flow channels 7 is away from the vertical center line of pre mouth plate 1, and the width of sub mouth rubber flow channel 7 gradually narrows from sub mouth rubber inlet 10 to sub mouth rubber outlet 4.The width of sub mouth rubber inlet 10 is 120mm, and the height is 30mm, and the side of sub mouth rubber inlet 10 close to vertical center line is 5mm away from vertical center line;The width of sub mouth rubber outlet 4 is 105mm, and the height is 8mm, and the side of sub mouth rubber outlet 4 close to vertical center line is 15mm away from vertical center line.

[0025] As Figure 6 As shown, the mouth plate 11 is equipped with two side extrusion channels symmetrical to vertical center line, and three kinds of rubber respectively pass the rubber channel of pre mouth plate 1 and carry out preliminary extrusion, and the extrusion shape of rubber is preliminarily adjusted, then pass the side extrusion channel of mouth plate 11 and carry out unified extrusion, form tire side.The shape of side extrusion outlet 12 is same with the side shape needed to produce, and the side close to vertical center line on the bottom surface of side extrusion inlet 13 is equipped with composite surface forming groove 14.Mouth plate 11 is divided into two plates with the junction of side extrusion channel and composite surface forming groove 14 as boundary line, to facilitate the combination of different sizes of side extrusion channel and composite surface forming groove 14, and the production of different sizes of side.

[0026] As Figure 7As shown in Fig. 8, the complex surface forming groove 14 comprises an inclined surface groove 15 and a flat surface groove 16, and the inclined surface groove 15 is closer to the vertical center line than the flat surface groove 16. The slope R of the inclined surface groove 15 is equal to the slope r of the sidewall complex surface; the depth D of the flat surface groove 16 is 10 mm more than the maximum thickness d of the sidewall complex surface; and the width M of the inclined surface groove 15 is equal to the distance m from the end point of the sidewall complex surface to the maximum thickness. By adding the complex surface forming groove 14, the sub-port rubber enters the sidewall extrusion channel along the path of the inclined surface groove 15, thereby controlling the size of the complex surface in the sidewall, and the specification of the extruded sidewall can meet the production requirements.

[0027] The pre-die plate 1 and the die plate 11 are provided with first threaded holes 17 matched for assembly on both sides, and the upper and lower plates of the die plate 11 are provided with second threaded holes 18 matched for assembly.

[0028] In the description of the present application, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] The above is only a specific embodiment of the present application, and cannot limit the scope of the present application, so the replacement of equivalent components or equivalent changes and modifications made in the scope of the present application patent protection should still fall within the scope of the claims of the present application.

Claims

1. A PCR tire side extrusion assembly plate comprising a pre-die plate and a die plate, the pre-die plate is a quadrangular prism with trapezoidal side, the back of the die plate is provided with a clamping groove, the shape of the clamping groove is matched with the pre-die plate, characterized in that, The die plate is symmetrically provided with two sidewall extrusion channels about the vertical center line, the sidewall extrusion outlet is the same as the sidewall shape to be produced, a composite surface forming groove is provided on the bottom surface of the sidewall extrusion inlet near the vertical center line, the die plate is divided into upper and lower plates with the connecting part of the sidewall extrusion channel and the composite surface forming groove as the boundary line, and the sidewall extrusion channels and the composite surface forming grooves of different sizes are combined.

2. The PCR tire side extrusion assembly panel of claim 1, wherein, The composite surface forming groove includes an inclined groove and a flat groove, the inclined groove is closer to the vertical center line than the flat groove, the slope of the inclined groove is equal to the slope of the sidewall composite surface, the depth of the flat groove is 10 mm more than the maximum thickness of the sidewall composite surface, and the width of the inclined groove is equal to the distance from the end point of the sidewall composite surface to the maximum thickness.

3. The PCR tire side extrusion assembly panel of claim 1 or 2, wherein, The top of the pre-die plate is provided with two top-open shoulder pad rubber flow channels symmetric about the vertical center line, the width of the shoulder pad rubber flow channel gradually narrows from the shoulder pad rubber inlet to the shoulder pad rubber outlet. The bottom of the pre-die plate is provided with two sub-port rubber flow channels symmetric about the vertical center line, the two sub-port rubber flow channels are away from the vertical center line from the back of the pre-die plate, and the width of the sub-port rubber flow channel gradually narrows from the sub-port rubber inlet to the sub-port rubber outlet.

4. The PCR sidewall extrusion assembly panel of claim 3, wherein, The width of the shoulder pad rubber inlet is 160 mm, the height is 20 mm, the side of the shoulder pad rubber inlet near the vertical center line is 165 mm away from the vertical center line, the width of the shoulder pad rubber outlet is 140 mm, the height is 10 mm, and the side of the shoulder pad rubber outlet near the vertical center line is 175 mm away from the vertical center line. The width of the sub-port rubber inlet is 120 mm, the height is 30 mm, the side of the sub-port rubber inlet near the vertical center line is 5 mm away from the vertical center line, the width of the sub-port rubber outlet is 105 mm, the height is 8 mm, and the side of the sub-port rubber outlet near the vertical center line is 15 mm away from the vertical center line.

5. The PCR sidewall extrusion assembly panel of claim 1, wherein, First threaded holes are provided on both sides of the pre-die plate and the die plate for cooperation and assembly, and second threaded holes are provided on the upper and lower plates of the die plate for cooperation and assembly.

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