Extruding machine head and composite extruding device

Abstract

The utility model provides an extruding machine head and a composite extruding device. The extruder head comprises a machine body, and the machine body is provided with a main runner; the runner plate is installed at the tail end of the main runner, the runner plate comprises a plate body and a plurality of check blocks, the plate body is provided with a public runner and a plurality of sub-runners communicated with the public runner, at least part of the check blocks are different in shape, the check blocks are selectively arranged between the public runner and the sub-runners and shield at least one sub-runner, and the baffle blocks are arranged on the plate body. And the stop blocks with different shapes shield different sub-runners and form different actual runners. The utility model solves the problems of high cost and low efficiency of replacing the runner plate of the composite extruder in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of tire processing and production, in particular to an extruder head and a composite extrusion device. Background Art

[0002] Composite extrusion technology and equipment are widely used in the production of rubber semi-components such as tire tread, sidewall, cushion rubber, and apex rubber. These rubber semi-components are made of rubbers of different formulations that are laminated together in a predetermined shape and are generally laminated by a composite extruder.

[0003] Under the existing technology, a composite extrusion production line is used to simultaneously produce the tread and double sidewalls. Generally, the runner part of the composite die head needs to be modified and replaced. Because the runner plate is bulky and difficult to replace, some solutions even require a special lifting tool next to the die head for replacement. Frequent replacement will cause wear or bumps on parts, resulting in rubber leakage during the production process. A single set of runner plates has a high cost, takes up space for storage, is time-consuming, labor-intensive, uneconomical, and affects production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide an extruder head and a composite extruder device to solve the problem of high cost and low efficiency in replacing the flow channel plate of the composite extruder in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an extruder head includes a body, the body having a main flow channel; a flow channel plate, the flow channel plate is installed at the end of the main flow channel, the flow channel plate includes a plate body and a plurality of blocks, the plate body has a common flow channel and a plurality of sub-flow channels connected to the common flow channel, at least some of the blocks have different shapes, the blocks can be selectively arranged between the common flow channel and the sub-flow channel, and block at least one sub-flow channel, blocks of different shapes block different sub-flow channels, and form different actual flow channels.

[0006] Furthermore, the stopper has a guide surface, and when the stopper is arranged between the common flow channel and the sub-flow channel, the guide surface of the stopper is butted against the side surface of the sub-flow channel forming the actual flow channel.

[0007] Further, the flow channel plate has a plurality of installation positions, the installation positions are located on the sides of the common flow channel and / or the sub-flow channel, and the stopper has an installation protrusion, and the installation protrusion is located at the installation position.

[0008] Furthermore, the mounting position includes a mounting groove, and the extruder head also includes a placeholder block, which is arranged at the mounting groove where the stopper is not installed.

[0009] Furthermore, the flow channel plate has an adjusting protrusion, which is located in the sub-flow channel and changes the extrusion shape of the sub-flow channel.

[0010] Furthermore, the sub-channel includes a first sub-channel and a plurality of second sub-channels, the second sub-channels are arranged on both sides of the first sub-channel, and the common channel is located on the same side of the first sub-channel and the second sub-channel in the length direction.

[0011] Furthermore, the block includes a plurality of first sub-blocks of the same shape, the first sub-blocks can be selectively installed between the second sub-flow channel and the common flow channel, and block the second sub-flow channel, and the common flow channel and the first sub-flow channel form an actual flow channel.

[0012] Further, the block includes a second sub-block, which can be selectively installed between the first sub-flow channel and the common flow channel and blocks the first sub-flow channel, and the common flow channel and the second sub-flow channel form an actual flow channel.

[0013] Further, the block includes a third sub-block, which can be selectively installed between the first sub-channel, the second sub-channel and the common channel, and blocks the first sub-channel and at least one second sub-channel, and the common channel and at least one unblocked second sub-channel form an actual channel.

[0014] According to another aspect of the present invention, a composite extrusion device includes a plurality of extruders and the above-mentioned extruder head, wherein the extruders are connected to the extruder head and communicated with a main flow channel of the extruder head.

[0015] By applying the technical solution of the utility model, the following technical effects are achieved:

[0016] 1. By forming different actual flow channels through blocks in the flow channel plate, when different styles of treads or sidewalls need to be produced, it is only necessary to replace different blocks according to actual needs without replacing the flow channel plate, so as to achieve different rubber outflow modes, take into account the production of different treads and sidewalls, reduce replacement costs, and do not need to be equipped with multiple extrusion equipment, thereby reducing production costs.

[0017] 2. The mounting protrusion of the block is installed on the mounting position of the flow channel plate to realize the installation and fixation of the block. When the block is installed on the side of the common flow channel or sub-flow channel, the block can block the sub-flow channel at that position; the flow direction of the raw material is changed by the block, which facilitates the change of the actual flow channel of the flow channel plate, so that different treads and sidewalls can be produced according to actual production and processing needs. At the same time, due to the small size of the block, the actual flow channel can be changed by changing the block, which facilitates the production of products of different styles.

[0018] 3. The raw material flowing in the flow channel plate is unsolidified rubber, and the rubber has a certain viscosity. If there is no placeholder installed in the groove, some rubber may remain in the groove. After the raw material stops flowing, the rubber at this position will solidify and remain at this position. When the stopper needs to be installed at this position next time, the rubber remaining here needs to be cleaned, which generates additional processes, affects the efficiency of the stopper replacement, and thus affects the overall work efficiency. By setting a placeholder at this position, when the rubber flows through this position, due to the blocking effect of the placeholder, the rubber will not accumulate here, thereby not affecting the replacement efficiency of the stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the extruder head of Example 1;

[0021] Figure 2 is a schematic diagram when the two second sub-flow channels are actual flow channels;

[0022] Figure 3 is a schematic diagram when one of the second sub-flow channels is an actual flow channel;

[0023] Figure 4 is a schematic diagram when the first sub-flow channel is an actual flow channel;

[0024] Figure 5 It is a schematic diagram of the overall structure of the composite extrusion device of Example 2;

[0025] Figure 6 is a schematic diagram of the tread of Example 1;

[0026] Figure 7 is a schematic diagram of the tread of Example 2;

[0027] Figure 8 is a schematic diagram of the tread of Example 3;

[0028] Fig. 9 is a schematic diagram of the tread of Example 4;

[0029] Fig.10 is a schematic diagram of the sidewall of Example 5;

[0030] Fig.11 This is a schematic diagram of the sidewall of Example 6.

[0031] The above drawings include the following reference numerals:

[0032] 1. Machine body; 11. Main flow channel; 2. Flow channel plate; 21. Plate body; 211. Common flow channel; 212. Sub-flow channel; 213. First sub-flow channel; 214. Second sub-flow channel; 22. Block; 221. First sub-block; 222. Second sub-block; 223. Third sub-block; 224. Mounting protrusion; 225. Guide surface; 23. Mounting position; 24. Adjustment protrusion; 3. Placeholder block.

[0033] T1, first rubber; T2, second rubber; T3, third rubber; T4, fourth rubber; S1, fifth rubber; S2, sixth rubber; S3, seventh rubber; S4, eighth rubber; EX1, first extruder; EX2, second extruder; EX3, third extruder; EX4, fourth extruder; H, extruder head. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0037] In order to solve the problem of high cost and low efficiency in replacing a flow channel plate of a composite extruder in the prior art, the utility model provides an extruder head and a composite extrusion device.

[0038] In the production and manufacturing of rubber semi-components such as tire treads, sidewalls, cushion rubbers, and apex rubbers, these rubber semi-components are made of rubbers of different formulations that are layered and compounded in a predetermined shape. For multi-layer products of two or more materials, different rubber materials need to be extruded and bonded in a specific shape through a compounding device. In order to meet the needs of complex tread and sidewall processing, multiple main channels are generally set inside the extruder head. Different main channels are equipped with rubbers of different formulations, which are compounded and superimposed after passing through the extruder head.

[0039] Embodiment 1

[0040] like Figures 1 to 4An extruder head shown includes a body 1 and a flow channel plate 2, the body 1 has a main flow channel 11, the flow channel plate 2 is installed at the end of the main flow channel 11, the flow channel plate 2 includes a plate body 21 and a plurality of blocks 22, the plate body 21 has a common flow channel 211 and a plurality of sub-flow channels 212 connected to the common flow channel 211, at least some of the blocks 22 have different shapes, the blocks 22 can be selectively arranged between the common flow channel 211 and the sub-flow channels 212, when the blocks 22 are provided, the blocks 22 block at least one sub-flow channel 212, blocks 22 of different shapes block different sub-flow channels 212, and form different actual flow channels.

[0041] In this embodiment, a plurality of blocks 22 are provided, and the shapes of the blocks 22 are not exactly the same. The blocks 22 and the plate body 21 are detachable and selectively set. At the same time, since the blocks 22 of different shapes have different blocking conditions on the sub-channel 212, when it is necessary to produce treads or sidewalls of different styles, the blocks 22 of corresponding shapes and their installation positions can be selected according to the shape of the actual channel to be formed, so that the actual channel formed on the channel plate 2 meets the requirements of extrusion processing. During the whole process, it is only necessary to replace different blocks 22 according to actual needs, and different rubber outflow methods can be achieved without replacing the channel plate 2, thereby taking into account the production of different treads and sidewalls, reducing replacement costs, and at the same time, there is no need to equip multiple extrusion equipment, reducing production costs.

[0042] like Figure 2 As shown, the block 22 of this embodiment has a guide surface 225. When the block 22 is set between the common flow channel 211 and the sub-flow channel 212, the guide surface 225 of the block 22 is docked with the side of the sub-flow channel 212 forming the actual flow channel. In this way, after the raw material enters the flow channel plate 2 from the main flow channel 11, the raw material will flow along the guide surface 225 of the block 22. Since the guide surface 225 of the block 22 is docked with the side of the actual flow channel, the raw material will flow into the sub-flow channel 212 forming the actual flow channel along the guide surface 225, achieving the expected flow channel effect. The guide surface 225 guides the raw material to facilitate the raw material to flow into the actual flow channel.

[0043] like Figure 2 and Figure 3 As shown, optionally, the flow channel plate 2 has one or more mounting positions 23. In this embodiment, two mounting positions 23 are provided as an example. The mounting positions 23 are located on the sides of the common flow channel 211 and / or the sub-flow channel 212. Accordingly, the block 22 has a mounting protrusion 224, and the mounting protrusion 224 is located at the mounting position 23.

[0044] Specifically, the mounting position 23 and the mounting protrusion 224 can be provided with mounting holes and other structures, and the two are installed and fixed by fasteners such as bolts. In this way, when the stopper 22 is installed and used, the mounting protrusion 224 of the stopper 22 is installed on the mounting position 23 of the flow channel plate 2 to achieve the installation and fixation of the stopper 22, so that when the stopper 22 is installed on the side of the common flow channel 211 or the sub-flow channel 212, the stopper 22 can stably block the sub-flow channel 212 at this position to ensure the extrusion effect. At the same time, different stoppers 22 make the flow direction of the raw materials different, which is convenient for changing the actual flow channel of the flow channel plate 2, so that different treads and sidewalls can be produced according to actual production and processing requirements. In addition, since the size of the stopper 22 is small, the actual flow channel can be changed by changing the stopper 22, which is convenient for the production of products of different styles.

[0045] The installation position 23 of this embodiment includes an installation groove, and the installation and fixation of the stopper 22 is achieved by the matching mode of the groove and the protrusion. At the same time, the extruder head also includes a placeholder 3, the size of the placeholder 3 is substantially the same as the size of the installation groove, and the placeholder 3 is arranged at the installation groove where the stopper 22 is not installed. The reason for adopting this setting mode is that the raw material flowing in the flow channel plate 2 is unsolidified rubber, and the rubber has a certain viscosity. If the installation groove is directly opened and placed, some rubber may remain at the position of the installation groove. After the raw material stops flowing, the rubber stopped at this position will solidify and remain at this position. In this way, when the stopper 22 needs to be installed at this position next time, the rubber remaining here needs to be cleaned, which generates additional processes, affects the efficiency of the replacement of the stopper 22, and thus affects the overall work efficiency. In this embodiment, by setting a placeholder 3 in the unused installation groove, when the rubber flows through this position, due to the blocking effect of the placeholder 3, the rubber will not accumulate here, thereby not affecting the replacement efficiency of the stopper 22.

[0046] like Figure 2 As shown, the flow channel plate 2 of this embodiment has an adjustment protrusion 24, which is located in the sub-flow channel 212 and changes the extrusion shape of the sub-flow channel 212. In this way, according to the needs of the product, the adjustment protrusion 24 is set in the sub-flow channel 212 of the flow channel plate 2. When the raw material flows through the adjustment protrusion 24, the flow shape of the raw material will be changed due to the adjustment protrusion 24, so as to meet the needs of the product to be processed.

[0047] like Figure 2As shown, in this embodiment, the sub-channel 212 includes a first sub-channel 213 and a plurality of second sub-channels 214, and the second sub-channels 214 are arranged on both sides of the first sub-channel 213, and the common channel 211 is located on the same side of the length direction of the first sub-channel 213 and the second sub-channel 214. Since a plurality of different sub-channels 212 are arranged in the channel plate 2, different sub-channels 212 are blocked by the block 22 according to the different products actually required to be produced, and the raw materials flow from the actual channel formed by the unblocked sub-channels 212 to enter the next production process, meeting the actual production needs.

[0048] Corresponding to the above-mentioned arrangement of the sub-channel 212, as Figure 4 As shown, the block 22 includes a plurality of first sub-blocks 221 of the same shape. The first sub-block 221 can be selectively installed between the second sub-channel 214 and the common channel 211, and blocks the second sub-channel 214, so that the common channel 211 and the first sub-channel 213 form an actual channel. The first sub-block 221 blocks the second sub-channel 214, so that the raw material can only pass through the unblocked first sub-channel 213. At this time, the first sub-channel 213 forms an actual channel, and the installation of the block 22 forms an "intermediate flow" type channel plate. The first sub-block 221 of this embodiment adopts a structure similar to a wedge block, and its size is basically the same as the inlet side of the second sub-channel 214. Its wedge surface serves as a guide surface 225 to guide the flow.

[0049] In addition to the first sub-block 221, Figure 2 As shown, the block 22 also includes a second sub-block 222, which can be selectively installed between the first sub-channel 213 and the common channel 211, and blocks the first sub-channel 213, so that the common channel 211 and the second sub-channel 214 form an actual channel. The second sub-block 222 blocks the first sub-channel 213, so that the raw material can only pass through the two unblocked second sub-channels 214, and the second sub-channel 214 forms an actual channel. At this time, the installation of the block 22 forms a "double-flow" type channel plate. The second sub-block 222 of this embodiment adopts a roughly L-shaped structure, which can cover the entire first sub-channel 213, and the outer side surfaces of the two segments of the L-shaped structure serve as guide surfaces 225 to guide the flow.

[0050] Similarly, the stopper 22 also includes a third sub-stopper 223, such as Figure 3As shown, the third sub-block 223 can be selectively installed between the first sub-channel 213, the second sub-channel 214 and the common channel 211, and blocks the first sub-channel 213 and at least one second sub-channel 214, so that the common channel 211 and at least one unblocked second sub-channel 214 form an actual channel. The third sub-block 223 blocks the first sub-channel 213 and one of the second sub-channels 214, so that the raw material can only pass through the remaining unblocked second sub-channel 214. At this time, the remaining second sub-channel 214 forms an actual channel, and the installation of the block 22 forms a "single-side flow" type channel plate. The third sub-block 223 of this embodiment adopts a triangular structure, and its two adjacent sides respectively block the first sub-channel 213 and one second sub-channel 214, and the other hypotenuse serves as a guide surface 225 to guide the raw material to the other second sub-channel 214.

[0051] The above three flow channels are all realized by changing the material flow direction by replacing the block 22 on the same plate body 21. In this way, the flow compatibility of the tread and the sidewall can be achieved. Only by replacing the block 22 of different flow channel plates 2, the double-sided flow, the middle flow and the single-sided flow can be realized without replacing the entire flow channel plate 2. Of course, the specific number and shape of the sub-flow channels 212 on the plate body 21 can be adjusted accordingly as needed, and are not limited to the above-mentioned setting method of this embodiment. Similarly, the number and shape of each block 22 can also be adjusted accordingly, as long as they can be adapted to the sub-flow channels 212 to form different actual flow channels.

[0052] In addition to the above-mentioned components, the extruder head of this embodiment as a whole also includes a base, a rear crossbeam, a middle body, a lower body, a middle-lower body, a middle-upper body, an upper body, an upper bracket, an upper rotating shaft, a lower rotating shaft, a rear support, a rear pin shaft, a front pin shaft, a preforming system, a locking plug plate, a cover plate, a plug plate locking actuator, an upper body opening and closing actuator, a middle-upper body opening and closing actuator, a lower body opening and closing actuator, a middle-lower body opening and closing actuator, a first flow channel plate, a second flow channel plate, a third flow channel plate, a fourth flow channel plate, a first adjustment plate, a second adjustment plate, a third adjustment plate, a fourth adjustment plate, a fifth adjustment plate and a sixth adjustment plate, etc.

[0053] The middle body is mounted on the base and connected by screws. The middle body is provided with rotation hinge holes at the upper and lower positions, and the upper shaft and the lower shaft are installed respectively. The middle upper body and the upper body are provided with mounting holes corresponding to the upper hinge holes of the middle body and pass through the upper shaft, and the lower body and the middle lower body are provided with mounting holes corresponding to the lower hinge holes of the middle body and pass through the shaft.

[0054] The upper bracket is installed above the middle body and connected by screws, spanning the middle body. Three rear supports are installed on the upper bracket by screws. A connecting ear seat is provided in the middle of the upper middle body, and a connecting ear seat is provided on each of the left and right sides of the upper body. The piston rod of the upper body opening and closing actuator can be extended and retracted along the axial direction (such as a hydraulic cylinder), and its front and rear ends are respectively connected to the rear support and the connecting ear seat of the upper body through the rear pin shaft and the front pin shaft. When the upper body opening and closing actuator is extended and retracted, it drives the upper body to rotate around the upper shaft as the center to realize the opening and closing action.

[0055] Similarly, the front and rear ends of the piston rod of the middle and upper body opening and closing actuator are respectively connected to the rear support and the connecting ear seat of the middle and upper body through the rear pin and the front pin. When the middle and upper body opening and closing actuator is extended or retracted, the middle and upper body rotates around the upper shaft to realize the opening and closing action.

[0056] The rear crossbeam is installed above the base and connected by screws, spanning the base, and three rear supports are installed on the rear crossbeam by screws. A connecting ear seat is provided in the middle of the outer side of the middle and lower body, and a connecting ear seat is provided on each of the left and right sides of the outer side of the lower body. The piston rod of the lower body opening and closing actuator can be extended and retracted along the axial direction (such as a hydraulic cylinder), and its front and rear ends are respectively connected to the rear support installed on the rear crossbeam and the connecting ear seat of the lower body through the rear pin shaft and the front pin shaft. When the lower body opening and closing actuator is extended and retracted, the lower body is driven to rotate around the lower rotating shaft as the center to achieve the opening and closing action. Similarly, the front and rear ends of the piston rod of the middle and lower body opening and closing actuator are respectively connected to the rear support and the connecting ear seat of the middle and lower body through the rear pin shaft and the front pin shaft. When the middle and lower body opening and closing actuator is extended and retracted, the middle and lower body is driven to rotate around the lower rotating shaft as the center to achieve the opening and closing action.

[0057] The joint surfaces of each machine body are fixed with six adjustment plates by screws, which are limited when the machine body is closed.

[0058] The opening sequence of the machine head is generally: upper machine body opens - middle upper machine body opens - lower machine body opens - middle lower machine body opens.

[0059] The sequence of machine head closing actions is generally: middle and lower machine body closing - lower machine body closing - middle and upper machine body closing - upper machine body closing.

[0060] That is, the upper part of the middle body must be opened from the outside first and then the inside, and closed from the inside first and then the outside; the lower part of the middle body must be opened from the outside first and then the inside, and closed from the inside first and then the outside. The upper and lower parts can be opened in any order.

[0061] The preforming system contacts the ends of the four runner plates and is used to collect and shape the rubber material. Two sets of plate locking systems are installed on the front side of the upper body to lock the preforming system in the grooves in front of each body, and two sets of plate locking systems are also installed on the front side of the lower body.

[0062] Each plate locking system includes a locking plate, a cover plate and a plate locking actuator. The cover plate is fixed to the upper and lower bodies by screws. The locking plate is connected to the piston rod of the plate locking actuator. The piston rod of the plate locking actuator can be extended and retracted along the axial direction to drive the locking plate to move up and down, close to or away from the preforming system to achieve locking. Figure 1 As shown, the locking plates on the upper and lower sides on the left are retracted and unlocked, and the locking plates on the upper and lower sides on the right are extended and locked. During normal operation, the four sets of locking plates on the upper and lower sides on the left and right sides are extended at the same time to lock the pre-mouth system, and retracted at the same time to unlock.

[0063] Embodiment 2

[0064] A composite extrusion device, see Figure 5 , including the extruder head in the first embodiment and a plurality of extruders, the extruders are connected to the main flow channel of the extruder head. During production, different parts of the sidewall tread correspond to different extruders.

[0065] This embodiment is provided with four extruders, and the four extruders are simultaneously coordinated with an extruder head. The four extruders are respectively a first extruder EX1, a second extruder EX2, a third extruder EX3 and a fourth extruder EX4. The four extruders cooperate with the setting of the extruder head H to realize the processing of different treads and sidewalls. Six specific processing processes are listed below.

[0066] For example 1, see Figure 6 The second extruder EX2 produces the third rubber T3 wing rubber part, the third extruder EX3 produces the first rubber T1 crown part, and the fourth extruder EX4 produces the fourth rubber T4 base rubber part. After the three materials are pushed to the extruder head H, they are compounded and extruded in the preforming system of the head. The third rubber T3 of the tread represents the wing rubber, which is symmetrical on the left and right, that is, the material needs to be divided into two to achieve left and right double-side diversion, corresponding to the two second sub-flow channels 214 as the actual flow channel.

[0067] For example 2, see Figure 7 The second extruder EX2 produces the third rubber T3 wing rubber part, the third extruder EX3 produces the first rubber T1 crown part, and the fourth extruder EX4 produces the fourth rubber T4 base rubber part (including conductive rubber). After the three materials are pushed to the extruder head H, they are compounded and extruded in the preforming system of the head. The first extruder EX1 can be used without starting up.

[0068] Another production scheme of the tread is that the first extruder EX1 produces the third rubber T3 part, the second extruder EX2 produces half of the first rubber T1, the third extruder EX3 produces the other half of the first rubber T1, and the fourth extruder EX4 produces the fourth rubber T4 part. This production method can improve the efficiency of tread extrusion.

[0069] For example 3, see Figure 8 The first extruder EX1 produces the third rubber T3 part, the second extruder EX2 produces the first rubber T1 part, the third extruder EX3 produces the second rubber T2 part, and the fourth extruder EX4 produces the fourth rubber T4 part. The four materials are pushed to the extruder head H and then compounded and extruded in the preforming system of the head.

[0070] For example 4, see Fig. 9 The conductive rubber and the upper and lower tread materials are different. The first extruder EX1 produces the third rubber T3 part, the second extruder EX2 produces the first rubber T1 part, the third extruder EX3 produces the second rubber T2 part, and the fourth extruder EX4 produces the fourth rubber T4 part. The four materials are pushed to the extruder head H and then compounded and extruded in the preforming system of the head.

[0071] Example 5, sidewall diagram Figure 1 Two extrusions at the same time, see Fig.10 The third extruder EX3 produces the fifth rubber S1 part, and the fourth extruder EX4 produces the sixth rubber S2 part. After entering the extruder head H, the material is divided into two parts, and compounded and extruded in the preforming system of the head. The first extruder EX1 and the second extruder EX2 do not need to be used for production. In theory, the four extruders can be flexibly selected. Only the most common method is provided here. If the user only requires the production of this type of sidewall, not the white sidewall or tread, two compound extruders can be used to meet the requirements.

[0072] Example 6, for sidewall indication Figure 2 (Black sidewall + white sidewall with rubber coating) two pieces are extruded at the same time, see Fig.11 The right sidewall is a white sidewall with two more rubbers, the seventh rubber S3 and the eighth rubber S4. The extruders are allocated as follows: the first extruder EX1 produces the eighth rubber S4 cover film, the second extruder EX2 produces the seventh rubber S3 white rubber part, the third extruder EX3 produces the fifth rubber S1 part, and the fourth extruder EX4 produces the sixth rubber S2 part. After the four materials are pushed to the extruder head H, they are compounded and extruded in the preforming system of the head.

[0073] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0074] 1. By forming different actual flow channels through the block 22 with multiple different sub-flow channels 212 in the flow channel plate 2, when it is necessary to produce different styles of treads or sidewalls, it is only necessary to replace different block 22 according to actual needs, without replacing the flow channel plate 2, to achieve different rubber outflow modes, and to take into account the production of different treads and sidewalls, thereby reducing replacement costs. At the same time, there is no need to equip multiple extrusion equipment, thereby reducing production costs.

[0075] 2. The mounting protrusion 224 of the block 22 is installed on the mounting position 23 of the flow channel plate 2 to realize the installation and fixation of the block 22. When the block 22 is installed on the side of the common flow channel 211 or the sub-flow channel 212, the block 22 can block the sub-flow channel 212 at this position; the flow direction of the raw material is changed by the block 22, which facilitates the change of the actual flow channel of the flow channel plate 2, so that different treads and sidewalls can be produced according to actual production and processing needs. At the same time, due to the small size of the block 22, the actual flow channel can be changed by changing the block 22, which facilitates the production of products of different styles.

[0076] 3. The raw material flowing in the flow channel plate 2 is unsolidified rubber, and the rubber has a certain viscosity. If the placeholder 3 is not installed at the installation groove, some rubber may remain at the position of the installation groove. After the raw material stops flowing, the rubber at this position will solidify and remain at this position. In this way, when the block 22 needs to be installed at this position next time, the rubber remaining here needs to be cleaned, which generates additional processes and affects the efficiency of replacing the block 22, thereby affecting the overall work efficiency. By setting the placeholder 3 in the unused installation groove, when the rubber flows through this position, due to the blocking effect of the placeholder 3, the rubber will not accumulate here, thereby not affecting the replacement efficiency of the block.

[0077] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0078] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0079] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0080] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An extruder head, characterized in that: include: A machine body (1), wherein the machine body (1) has a main flow channel (11); A flow channel plate (2), the flow channel plate (2) being installed at the end of the main flow channel (11), the flow channel plate (2) comprising a plate body (21) and a plurality of baffles (22), the plate body (21) having a common flow channel (211) and a plurality of sub-flow channels (212) connected to the common flow channel (211), at least some of the baffles (22) having different shapes, the baffles (22) being selectively arranged between the common flow channel (211) and the sub-flow channels (212), and blocking at least one of the sub-flow channels (212), the baffles (22) having different shapes blocking different sub-flow channels (212), and forming different actual flow channels.

2. The extruder head according to claim 1, characterized in that: The stopper (22) has a flow guide surface (225); when the stopper (22) is arranged between the common flow channel (211) and the sub-flow channel (212), the flow guide surface (225) of the stopper (22) is butt-jointed with a side surface of the sub-flow channel (212) forming the actual flow channel.

3. The extruder head according to claim 1, characterized in that: The flow channel plate (2) has a plurality of mounting positions (23), wherein the mounting positions (23) are located on the side of the common flow channel (211) and / or the sub-flow channel (212), and the stopper (22) has a mounting protrusion (224), wherein the mounting protrusion (224) is located at the mounting position (23).

4. The extruder head according to claim 3, characterized in that The installation position (23) comprises an installation groove, and the extruder head further comprises a placeholder block (3), wherein the placeholder block (3) is arranged at the installation groove where the stop block (22) is not installed.

5. The extruder head according to claim 1, characterized in that: The flow channel plate (2) has an adjustment protrusion (24), and the adjustment protrusion (24) is located in the sub-flow channel (212) and changes the extrusion shape of the sub-flow channel (212).

6. The extruder head according to any one of claims 1 to 5, characterized in that The sub-flow channel (212) comprises a first sub-flow channel (213) and a plurality of second sub-flow channels (214); the second sub-flow channels (214) are arranged on both sides of the first sub-flow channel (213); and the common flow channel (211) is located on the same side of the first sub-flow channel (213) and the second sub-flow channel (214) in a length direction.

7. The extruder head according to claim 6, characterized in that The block (22) comprises a plurality of first sub-blocks (221) of the same shape. The first sub-blocks (221) can be selectively installed between the second sub-flow channel (214) and the common flow channel (211) to block the second sub-flow channel (214). The common flow channel (211) and the first sub-flow channel (213) form the actual flow channel.

8. The extruder head according to claim 6, characterized in that The block comprises a second sub-block (222), which can be selectively installed between the first sub-channel (213) and the common channel (211) and blocks the first sub-channel (213), and the common channel (211) and the second sub-channel (214) form the actual channel.

9. The extruder head according to claim 6, characterized in that: The block (22) comprises a third sub-block (223), and the third sub-block (223) can be selectively installed between the first sub-channel (213), the second sub-channel (214) and the common channel (211), and blocks the first sub-channel (213) and at least one of the second sub-channels (214), and the common channel (211) and at least one of the unblocked second sub-channels (214) form the actual channel.

10. A composite extrusion device, characterized in that: It comprises a plurality of extruders and an extruder head as claimed in any one of claims 1 to 9, wherein the extruders are connected to the extruder heads and communicated with a main flow channel (11) of the extruder heads.

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