CN101524890A - Distributor - Google Patents

Abstract

A distributor, comprising a housing, in which a main channel and at least one branch channel are arranged, and each branch channel communicates with the main channel respectively, and the feature is that a guide is detachably installed at the intersection of the branch channel and the main channel. flow widget. The present invention can replace the guide parts as required, and can realize the production of multi-layer plastic packaging materials in the thickness direction and multi-layer plastic packaging materials in the width direction composed of a variety of different color materials on one extrusion molding equipment. color plastic packaging materials; the replacement process of the guide parts is simple and fast, and the time spent is short, which will not affect the normal production; the cost of equipping various guide parts is low, and the plastic packaging product manufacturers only need to add a little The investment can achieve the purpose of producing a variety of plastic packaging materials on one extrusion molding equipment. The invention can be used for the production of different sheets through simple and quick replacement or adjustment, and greatly improves the utilization rate of the equipment.

Description

a dispenser

technical field

The present invention relates to extrusion molding equipment, in particular to a distributor installed between an extruder and an extrusion die.

Background technique

When producing plastic packaging materials (such as plastic film, plastic sheet and plastic plate) by multi-layer co-extrusion compounding, the multi-layer materials are evenly compounded together through the distributor, which has the advantages of saving materials, diversifying materials, and not being toxic. Adhesive, environmental protection requirements and other advantages, and the various layers of plastic packaging materials are well combined, and the barrier effect is very ideal.

Existing dispensers can be used to produce multilayer plastic packaging material in the thickness direction. For example, the "distributor of co-extrusion sheet machine" announced by Chinese patent CN2880461Y discloses a distributor of co-extrusion sheet machine, including a housing, which is provided with a main feed port and a discharge port. There is a main channel connecting the main feed port and the discharge port. The cross section of the main channel is rectangular. There are four auxiliary feed ports on the shell, and two of the auxiliary feed ports are respectively connected from both sides through the branch channel. In the upper section of the main channel, the two auxiliary feed ports are respectively connected to the lower section of the main channel from both sides through the runner. Preferably, a regulating valve is provided at the junction of each branch channel and the main channel, and the regulating valve includes a regulating choke block and a connecting shaft, and the regulating choke block is fixed on the connecting shaft and built into the junction of the branch channel and the main channel The main body of the connecting shaft is in the housing and at least one end is outside the housing. By rotating the connecting shaft, the baffle block can be adjusted to rotate, so as to realize the conduction or closure of the corresponding flow channel and the control of the flow rate, and at the same time change the main flow channel The size of the flow rate, thereby changing the flow ratio of the material melt of each layer, so that the composite ratio of each layer meets the requirements, and the rotation of the baffle block can be adjusted without stopping the machine. In this kind of distributor, each branch channel is connected to the main channel from the front side or the rear side, so that the material in the extrusion die is composed of multiple layers arranged in sequence from front to back, and can be produced after calendering in the direction of thickness. Layered multilayer sheets.

However, in recent years, with the diversification of plastic packaging materials, many plastic packaging product manufacturers require that a variety of products can be produced on one production equipment, so as to maximize the utilization of the equipment as much as possible, thereby reducing the cost of the equipment. cost of investment. When a plastic packaging product manufacturer needs to produce a two-color sheet composed of two different color materials in the width direction (for example, the left half of the sheet is black, and the right half is white), the existing dispenser cannot meet the requirements of plastic packaging. The needs of packaging product manufacturers.

At present, some plastic packaging product manufacturers can produce multi-layer plastic packaging materials in the thickness direction and two different colors in the width direction on one extrusion molding equipment by equipping replaceable parts. Material composed of two-color plastic packaging material. When it is necessary to produce multi-layer plastic packaging materials in the thickness direction, install the distributor and extrusion die on the extrusion molding equipment; when it is necessary to produce two-color plastic packaging materials composed of two different color materials in the width direction , then install a transition body 02 with two runners 01 and a double hanger die head 03 on the extrusion molding equipment to replace the original distributor and extrusion die head, the double coat hanger die head 03 is set There are two material channels 04, and the two material channels 04 communicate with the two flow channels 01 one by one. The material inlets at the upper ends of the two flow channels 01 in the transition body 02 are respectively connected to an extruder, and the two material channels 04 The material outlets at the lower end are continuous; the materials in the two extruders respectively flow through the corresponding flow channel 01 and the material channel 04, and then flow out from the material outlet at the lower end of the material channel 04 and combine together; the transition body 02 and the double hanger type The structure of die head 03 is shown in Figure 1. However, manufacturers of plastic packaging products must purchase an additional set of transition body and double hanger die, and the investment cost of the equipment is still relatively high; Or to replace the distributor and the extrusion die with the transition body and the double coat hanger die, all must go through the process of disassembly, installation and debugging, which takes a long time and affects the production efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dispenser, which can realize the production of multi-layer plastic packaging materials in the thickness direction and the It is possible to produce multi-colored plastic packaging materials consisting of several different colored materials in the width direction. The technical scheme adopted is as follows:

A distributor, comprising a housing, in which a main channel and at least one branch channel are arranged, and each branch channel communicates with the main channel respectively, and the feature is that a guide is detachably installed at the intersection of the branch channel and the main channel. flow widget.

In a specific solution, a strip-shaped slot for installing the flow guide part is provided in the housing, and a strip-shaped insert matching the strip-shaped slot is provided on the flow guide part, and the strip-shaped insert is in a strip-shaped In the slot, the flow guiding part is installed at the intersection of the runner and the main channel. In this way, when replacing the flow guide part, move the flow guide part so that the strip plug slides along the strip slot, then the original flow guide part can be removed, and a new flow guide part can be installed at the required position, and the replacement The process is simpler, faster and takes less time. Usually, the above-mentioned strip-shaped slots are arranged on the upper side of the material outlet of the runner.

In the case of producing multi-layer plastic packaging materials in the thickness direction, the guide part used is a partition, which is detachably installed on the upper side of the material outlet of the split channel, and the partition connects the split channel with the main channel Separated, the side of the partition on the side of the main channel constitutes a part of the inner wall of the main channel, and the side of the partition on the side of the sub-runner forms a part of the inner wall of the sub-runner; the material outlet of the sub-runner is connected to the front or rear side of the main channel connect. In this way, the material flowing in from the sub-runner is compounded on the front or rear side of the material in the main channel, and finally forms a multi-layer material arranged from front to back in the main channel, and forms a multi-layer plastic in the thickness direction after passing through the extrusion die. Packaging Materials.

The side of the partition plate on the side of the main channel constitutes a part of the inner wall of the main channel, which can limit the shape and size of the main channel at the intersection of the runner and the main channel; the side of the partition on the side of the runner constitutes the inner wall of the runner The side can define the shape and size of the runner at the intersection of the runner and the main channel. Therefore, according to the requirements of different materials for the shape and size of the flow channel, by replacing the partition with an appropriate shape and size, the shape and size of the sub-runner and main channel at the intersection can be flexibly adjusted, thereby adjusting the flow rate of the main channel, the flow rate of the sub-runner and the flow rate of the main channel. The ratio of the two, so that the compound area and dosage ratio of each layer of material meets the requirements, so that each layer of material is combined in the distributor and distributed evenly and evenly in the extrusion die, so as to ensure the thickness of each layer of plastic packaging material products The accuracy and uniformity of the machine make the layering of the final plastic packaging material product uniform.

In the case of producing a two-color plastic packaging material composed of two different color materials in the width direction, in one scheme, the guide part used is provided with a main guide groove and a branch guide groove; The upper end opening communicates with the main channel above the diversion part, the lower opening of the main diversion channel communicates with the left half or the right half of the main channel below the diversion part; The opening at the lower end of the flow groove communicates with the right half or the left half of the main flow channel below the flow guiding component. Usually, at the lower end of the diversion component, the lower end opening of the main diversion groove is continuous with the lower end opening of the sub diversion groove, so that the material flowing out from the main diversion groove is just spliced together with the material flowing out from the sub diversion groove, and The interface between the two materials is aligned with the boundary line between the lower opening of the main flow channel and the lower opening of the sub flow channel.

Usually, the distributor is provided with an even number (generally four or two) of sub-flow channels, and the sub-flow channels are arranged symmetrically on both sides of the main channel in pairs. Among the paired two runners, one runner is set on the front side of the main channel, and the other runner is set on the rear side of the main channel, so that at a junction of the main channel and the runners, the main channel and the two The shunt is connected. In the case of producing a two-color plastic packaging material composed of two different color materials in the width direction, in one solution, the flow guide part used is provided with a main flow channel and two branch flow channels, one of which is The sub-drain channel is set on the front side of the main flow slot, and the other sub-drain slot is set on the rear side of the main flow slot; the upper end opening of the main flow slot communicates with the main channel above the flow guide part, and the lower end opening of the main flow slot It communicates with the left half or the right half of the main flow channel under the flow guiding part; The shunt channels are connected, and the lower openings of the front sub-drain groove and the lower end opening of the rear sub-drain groove communicate with the right half or the left half of the main flow channel below the flow guide component. The material in the front side diversion channel flows out from the lower opening of the front side diversion channel after passing through the front side diversion channel; The lower opening of the diversion channel flows out; at the lower end of the guide member, the material flowing out from the lower opening of the front diversion channel and the material flowing out of the lower opening of the rear diversion channel are brought together and enter the diversion The right half or the left half of the main flow channel below the component is spliced together with the material that enters the left half or the right half of the main flow channel below the flow guiding component from the lower opening of the main flow channel. Usually, at the lower end of the diversion component, the lower end opening of the main diversion groove is continuous with the lower end opening of the sub diversion groove, so that the material flowing out from the main diversion groove is just spliced together with the material flowing out from the sub diversion groove, and The interface between the two materials is aligned with the boundary line between the lower opening of the main flow channel and the lower opening of the sub flow channel.

If the distributor is provided with an even number (generally four or two) of runners, and the runners are arranged symmetrically on both sides of the main channel in pairs, then in the production of two-color plastics composed of two different color materials in the width direction In the case of packaging materials, in another solution, a first sub-drain groove and a second sub-drain groove are arranged in the used flow guide part, and the upper end opening of the first sub-drain groove is connected to the front side of the flow diversion groove. The lower end opening of the first diversion channel communicates with the left half or the right half of the main channel below the diversion member; the upper opening of the second diversion channel communicates with the diversion channel on the rear side, the second The opening at the lower end of the flow guide groove communicates with the right half or the left half of the main channel below the flow guide component. Usually, at the lower end of the guide part, the lower opening of the first sub-drain slot is continuous with the lower end opening of the second sub-drain slot, so that the material flowing out from the first sub-drain slot just coincides with the flow from the second sub-drain slot. The materials flowing out of the launder are spliced together, and the interface between the two materials is aligned with the boundary line between the lower end opening of the first sub-drain channel and the lower end opening of the second sub-drain channel.

If the distributor is provided with an even number (generally four or two) of runners, and the runners are arranged symmetrically on both sides of the main channel in pairs, then this distributor is also suitable for producing three different colors in the width direction. The three-color plastic packaging material composed of three-color plastic materials. At this time, the guide part used is provided with a main guide channel and two branch guide channels, one of which is located on the front side of the main guide channel, and the other is divided into The flow channel is arranged on the rear side of the main flow channel; the upper opening of the main flow channel communicates with the main flow channel above the flow guide part, and the lower end opening of the main flow channel communicates with the middle part of the main flow channel below the flow guide part; The upper opening of the diversion groove communicates with the diversion channel on the front side, the upper opening of the diversion channel on the rear side communicates with the diversion channel on the rear side, and the lower opening of the diversion channel on the front side communicates with the diversion channel on the rear side. The openings at the lower ends of the openings respectively communicate with the right part and the left part of the main channel below the flow guiding component. Usually, at the lower end of the diversion component, the lower opening of the sub-drain channel on the front side, the lower end opening of the main flow channel and the lower opening of the sub-drain channel on the rear side are sequentially connected, so that the material flowing out of the main flow channel The two sides of the two sides are just respectively spliced together with the materials flowing out from the two sub-drains, and the interface between the materials is aligned with the dividing line between the lower opening of the main ditch and the lower opening of the sub-drains. In addition, in the above-mentioned flow guiding member, the lower end opening of a sub-guiding groove (the sub-guiding groove on the front side or the sub-guiding groove on the rear side) may also be communicated with the middle part of the main channel below the flow-guiding component, and the leading The lower end opening of the flow channel and the lower end opening of the other sub-drain channel communicate with the right part and the left part of the main flow channel under the flow guiding component respectively.

Preferably, in each of the above-mentioned flow guide components, the widths of the main flow guide groove and the sub flow guide grooves are gradually reduced from top to bottom.

In order to independently adjust the outlet size of each sub-runner leading to the main channel without stopping the machine, so as to change the flow ratio of the material melt of each layer, so that the composite ratio of each layer can meet the requirements, and avoid the loss caused by the shutdown adjustment. And to make the operation more convenient, there is a regulating valve on the lower side of the material outlet of each branch channel. The regulating valve includes a throttling block and a connecting shaft. The throttling block is fixed on the connecting shaft; the connecting shaft is installed in the shell. And at least one end is outside the casing. In the case of producing multi-layer plastic packaging materials in the thickness direction, the side of the throttling block on the side of the shunt constitutes a part of the inner wall of the shunt, and the throttling block can be driven without stopping the machine by rotating the connecting shaft Rotate to increase or decrease the gap between the throttling block and the partition, thereby increasing, reducing or closing the material outlet of the shunt channel, realizing the conduction or closure of the corresponding shunt channel, the control of the flow rate, and changing The flow ratio of the material melts in each layer makes the composite ratio of each layer meet the requirements; by adjusting the throttling block, flow marks can also be eliminated. Moreover, in the case of producing a multi-colored plastic packaging material composed of a plurality of different color materials in the width direction, the throttle block can be in contact with the flow guide member to form a part of the side wall of the sub-flow guide groove, so that the flow guide member The diversion grooves in are easier to process.

Usually, the shell is provided with a main feed port and a discharge port, both of which correspond to the main channel, and the main feed port can communicate with the discharge port through the main channel; The number of auxiliary feed ports is the same as that of the sub-runners and corresponds one by one, and the sub-feed ports can be connected with the main channel through the sub-runners. The number of auxiliary feed inlets and runners can be set to one, two, three, four, etc. according to actual needs. For example, if the multi-layer plastic packaging materials to be produced have at most five layers, there are There are four auxiliary feed ports, and four shunt channels are arranged in the shell.

In the case of producing multi-layer plastic packaging materials in the thickness direction, the above-mentioned distributor can be used for the production of sheets whose number of material layers is equal to the total number of main channels and runners, but in actual production, it is often encountered that the sheet to be produced The number of material layers of the material is less than the total number of main channels and runners. For example, in a specific embodiment, four distributors are provided in the housing of the distributor. This distributor can be used for the production of five-layer sheets. But in actual production, some sheets only need four, three or two layers. In order to enable the distributor to flexibly adapt to the requirements of producing different layers of sheets without changing the structure of the main flow channel, a splitter rod is detachably installed in the above housing, and a splitter rod is provided on the splitter rod for connecting the main feed port and the The main connecting channel of the main flow channel and at least one auxiliary connecting channel for communicating with the corresponding auxiliary feeding port and the branch channel. The number of auxiliary connection channels is determined according to the number of material layers of the sheet to be produced. Take the case where there are four shunts in the housing of the distributor as an example: when the sheet has five layers, the shunt rod is provided with four auxiliary connections. Channel, when installed in the housing, the main connecting channel connects the main feed port with the main channel, and each secondary connecting channel connects the corresponding secondary feed port with the split channel; Auxiliary connection channels, when installed in the shell, the main connection channel connects the main feed port with the main flow channel, and each auxiliary connection channel connects the corresponding auxiliary feed port with the branch channel, and the other auxiliary feed port does not connect with the corresponding The shunt channel is connected (the shunt channel is closed at this time); when the sheet is three-layer, the shunt bar is provided with two auxiliary connecting channels. When installed in the shell, the main connecting channel connects the main feed port and the main channel. Each auxiliary connecting channel communicates with the corresponding auxiliary feed port and the flow channel, and the other two auxiliary feed ports do not communicate with the corresponding flow channel (at this time, the two flow channels are closed). When the splitter rod needs to be replaced, the splitter rod can be replaced quickly without dismantling the distributor completely.

In the case of producing multi-color plastic packaging materials composed of a variety of different color materials in the width direction, usually only two or three runners (including the main runner and the runner) are used, and the splitter rod can also pass the flow through The sub-flow channel of the incoming material is connected with the corresponding auxiliary feed port, and the other sub-flow channels are closed; and the main channel is connected with the main feed port, or the main channel is closed. When the main flow channel needs to be closed, the splitter bar is provided with two auxiliary connection channels for connecting the corresponding auxiliary feed port and the flow channel, but there is no main connection channel for connecting the main feed port and the main flow channel.

The present invention can replace the guide parts as required, and can realize the production of multi-layer plastic packaging materials in the thickness direction and multi-layer plastic packaging materials in the width direction composed of a variety of different color materials on one extrusion molding equipment. color plastic packaging materials; the replacement process of the guide parts is simple and fast, and the time spent is short, which will not affect the normal production; the cost of equipping various guide parts is low, and the plastic packaging product manufacturers only need to add a little The investment can achieve the purpose of producing a variety of plastic packaging materials on one extrusion molding equipment. A splitter rod is detachably installed in the casing, so that the distributor can flexibly adapt to the requirements of producing different sheet materials without changing the structure of the main flow channel. The invention can be used for the production of different sheets through simple and quick replacement or adjustment, and greatly improves the utilization rate of the equipment.

Description of drawings

Fig. 1 is in the prior art, the transition body used when producing the two-color plastic packaging material that is made of two kinds of different color materials in width direction and the structure schematic diagram of double hanger formula die head;

Fig. 2 is a schematic structural view of a preferred embodiment of the present invention in the case of producing a multilayer plastic packaging material in the thickness direction;

Fig. 3 a is a structural representation of a partition that can be used in the distributor shown in Fig. 2;

Fig. 3b is the left view of Fig. 3a;

Fig. 4 a is the structural representation of another kind of dividing plate that can be used in the dispenser shown in Fig. 2;

Figure 4b is a cross-sectional view of Figure 4a;

Fig. 5 is a schematic structural view of a preferred embodiment of the present invention in the case of producing a two-color plastic packaging material made of two different color materials in the width direction;

Fig. 6a is a schematic structural view (perspective view) of the flow guide member in the distributor shown in Fig. 5;

Fig. 6b is a structural schematic diagram (perspective view) of another view direction of the flow guiding member shown in Fig. 6a;

Fig. 7a is a structural schematic diagram (perspective view) of a flow guiding member that can be used in the distributor shown in Fig. 5;

Fig. 7b is a structural schematic diagram (perspective view) of another view direction of the flow guiding member shown in Fig. 7a;

Figure 8 is a perspective view of a preferred embodiment of the present invention;

Fig. 9a is a schematic structural view of a shunt rod according to a preferred embodiment of the present invention;

Figure 9b is a top view of Figure 9a;

Fig. 10a is a schematic structural view of another shunt rod according to the preferred embodiment of the present invention;

Figure 10b is a top view of Figure 10a;

Fig. 11a is a schematic structural view of another shunt rod according to the preferred embodiment of the present invention;

Figure 11b is a top view of Figure 11a;

Fig. 12a is a schematic structural view of another shunt rod according to the preferred embodiment of the present invention;

Figure 12b is a top view of Figure 12a;

Fig. 13a is a schematic structural view of another shunt rod according to the preferred embodiment of the present invention;

Figure 13b is a top view of Figure 13a;

Fig. 14a is another kind of embodiment, in the situation of producing the two-color plastic packaging material that is made of two different color materials in width direction, the structure diagram (perspective view) of the flow guiding part used;

Fig. 14b is a structural schematic view (perspective view) of another viewing direction of the flow guide member shown in Fig. 14a.

Detailed ways

As shown in Fig. 2, Fig. 5 and Fig. 8, this distributor comprises housing 1, and housing 1 is provided with main channel 2 and four sub-flow channels 3, and each sub-flow channel 3 communicates with main channel 2 respectively (four The runners 3 form two pairs, which are symmetrically arranged on both sides of the main channel 2; among the two runners 3 in pairs, one runner 3 is arranged on the front side of the main runner 2, and the other runner 3 is arranged on the front side of the main runner 2. the rear side of the main channel 2); the housing 1 is provided with a main feed port 4 and a discharge port 5, the main feed port 4 and the discharge port 5 are corresponding to the main channel 2, and the main feed port 4 can pass through the main flow channel Channel 2 communicates with discharge port 5; housing 1 is provided with four auxiliary feed ports 6, which are in one-to-one correspondence with sub-flow channel 3, and sub-feed port 6 can pass through sub-flow channel 3 and main channel 2 connected. The intersection of the shunt 3 and the main channel 2 is detachably installed with a guide part; the housing 1 is provided with strip slots 12 for installing the guide parts (there are four in total, forming two pairs), and the strip slots 12 is arranged on the upper side of the material outlet 31 of the flow channel 3; a strip-shaped insert matching with the strip-shaped slot 12 is arranged on the guide part, and the strip-shaped insert is slidably matched with the strip-shaped slot.

As shown in Figure 2, in the case of producing multi-layer plastic packaging materials in the thickness direction, the flow guide part used is a partition 7, and the partition 7 is detachably mounted on the material outlet 31 of the shunt 3 side, the divider 7 separates the runner 3 from the main runner 2, the side of the divider 7 on the side of the runner 2 forms a part of the inner wall of the main runner 2, and the side of the divider 7 on the side of the runner 3 constitutes the runner 3 a part of the inner wall; the material outlet 31 of the runner 3 on the front side is connected to the front side of the main channel 2, and the material outlet 31 of the runner 3 on the rear side is connected to the rear side of the main channel 2. In this way, the material flowing in from the runner 3 is compounded on the front side or the rear side of the material in the main channel 2 accordingly, and finally forms a multi-layer material arranged from front to back in the main channel 2, and is formed in the main channel 2 after passing through the extrusion die. Multiple layers of plastic packaging material in the thickness direction. Before production, according to the requirements of different materials on the shape and size of the flow channel, by replacing the partition plate 7 with an appropriate shape and size, the shape and size of the sub-flow channel 3 and the main flow channel 2 at the intersection can be adjusted, thereby adjusting the flow and distribution of the main flow channel 2 The flow rate of channel 3 and the ratio of the two make the materials of each layer combine in the distributor and distribute evenly and evenly in the extrusion die. As shown in Figure 3a and Figure 3b, the side of this partition 7 on the main channel 2 side and the side on the side of the shunt 3 are plane; Strip plug 72. Figures 4a and 4b show another partition 7 that can be used in this embodiment. The side of the partition 7 on the side of the main channel 2 is a plane, and the side on the side of the side of the flow channel 3 is provided with a groove 71. ; The partition 7 is provided with a strip insert 72 that matches the strip slot 12 . The partition 7 can also be designed into other shapes as required.

As shown in Figure 5, in the case of producing a two-color plastic packaging material made of two different color materials in the width direction, the two junctions of the upper pair of runners 3 and the main runner 2 in Figure 2 can be used A dividing plate 7 is replaced with a flow guide member 10, and the lower pair of dividing plates 7 need not be replaced, and the lower pair of flow passages 3 are closed at this moment. As shown in Fig. 6a and Fig. 6b, the adopted diversion member 10 is provided with a main diversion groove 101, a sub diversion groove 102 and a sub diversion groove 103, wherein the sub diversion groove 102 is arranged in front of the main diversion groove 101 Side, the sub-drain channel 103 is located at the rear side of the main flow channel 101; the upper opening of the main flow channel 101 communicates with the main channel 2 above the flow guide part 10, and the lower end opening of the main flow guide channel 101 communicates with the main flow channel 2 below the flow guide part 10. The left half of the main channel 2 communicates; the upper opening of the sub-drain channel 102 on the front side communicates with the sub-flow channel 3 on the front side, and the lower end opening of the sub-drain channel 102 on the front side communicates with the main channel 2 below the flow guide member 10. The upper end opening of the sub-drain channel 103 on the rear side communicates with the sub-flow channel 3 on the rear side, and the lower end opening of the sub-drain channel 103 on the rear side is also connected to the right side of the main flow channel 2 below the flow guide member 10. The half part is connected; at the lower end of the flow guide part 10, the lower end opening of the main flow guide groove 101 is continuous with the lower end openings of the sub flow guide grooves 102, 103; The strip inserts 104, the two strip inserts 104 are in the paired two strip slots 12 in a one-to-one correspondence. The material in the front side flow channel 3 flows out from the lower opening of the front side flow channel 102 after passing through the front side flow channel 102; the material in the rear side flow channel 3 passes through the rear side flow channel After 103, it flows out from the lower end opening of the sub-drain groove 103 on the rear side; at the lower end of the flow guide member 10, the material flowing out from the lower end opening of the sub-drain groove 102 on the front side and the lower end of the sub-drain groove 103 from the rear side The materials flowing out of the openings are collected together and enter the right half of the main flow channel below the flow guide member 10, and are spliced together with the materials that enter the left half of the main flow channel 2 below the flow guide member 10 from the lower opening of the main flow channel 101 . Of course, it is also possible to replace the two partitions 7 at the intersection of the lower pair of flow passages 3 and the main flow passage 2 in Fig. 2 with the guide member 10 as shown in Fig. It is not necessary to replace the dividing plate 7, and the upper pair of flow passages 3 are closed at this moment.

In the case of producing a two-color plastic packaging material made of two different color materials in the width direction, the flow guide member 10 shown in Figure 7a and Figure 7b can also be used (this guide member 10 replaces the upper part in Figure 2 The two partitions 7 at the intersection of a pair of sub-flow channels 3 and the main channel 2, and the lower pair of partitions 7 do not need to be replaced), this flow guide part 10 is provided with a main flow channel 101 and a flow guide Groove 102; the upper opening of the main flow channel 101 communicates with the main channel 2 above the flow guide part 10, and the lower end opening of the main flow channel 101 communicates with the left half of the main flow channel 2 below the flow guide part 10; the branch flow guide channel 102 The upper opening of the upper end is communicated with a flow channel 3, and the lower opening of the branch flow channel 102 is connected with the right half of the main flow channel 2 below the flow guide part 10; The lower openings of the diversion grooves 102 are continuous; the flow guide member 10 is provided with two strip inserts 104 that match the strip slots 12, and the two strip inserts 104 are in pairs one by one. In the two strip slots 12. When using the flow guide member 10 shown in Figure 7a and Figure 7b, the flow guide member 10 is installed at the intersection of the upper pair of flow channels 3 and the main flow channel 2, and in the pair of flow channels 3, one flow channel 3 It communicates with the upper opening of the diversion channel 102, while the other channel 3 is closed; the lower pair of channel 3 is closed. Of course, it is also possible to replace the two partitions 7 at the intersection of the lower pair of runners 3 and the main flow channel 2 in Fig. 2 with the guide member 10 as shown in Fig. 7a and Fig. Among the split runners 3, one split runner 3 communicates with the upper opening of the diversion channel 102, while the other split runner 3 is closed; and the upper pair of partitions 7 do not need to be replaced, at this time the upper pair of split runners 3 off.

Referring to Fig. 8, a regulating valve is respectively provided on the lower side of the material outlet 31 of each branch channel 3, and the regulating valve includes a throttling block 81, a connecting shaft 82, a regulating rod 83 and a fixed plate 84; the throttling block 81 is fixed on the connection On the shaft 82, the side of the throttling block 81 on one side of the flow channel 3 constitutes a part of the inner wall of the flow channel 3; the connecting shaft 82 is generally in the housing 1 and has one end outside the housing 1; one side of the fixing plate 84 is provided with two Each projection 85 is provided with a screw hole, and each screw hole is provided with an adjusting bolt 86. The two adjusting bolts 86 are arranged oppositely. One end of the adjusting rod 83 is located between the ends of the two adjusting bolts 86 and connected The end of the adjusting bolt 86 contacts, and the other end of the adjusting rod 83 is connected with the end of the connecting shaft 82 outside the housing 1;

A splitter bar 9 is detachably installed in the housing 1, and the splitter bar 9 is provided with a main connecting channel 91 for connecting the main feed port 4 and the main flow channel 2 and at least one for connecting the corresponding auxiliary feed port 6 and the split flow channel. The auxiliary connecting channel 92 of the channel 3, wherein the main connecting channel 91 is a through hole arranged in the shunt bar 9, and the auxiliary connecting channel 92 is a groove arranged on the surface of the shunt bar 9.

In the case of producing a multilayer plastic packaging material in the thickness direction, the number of secondary connecting channels 92 is determined according to the number of material layers of the sheet to be produced. As shown in Fig. 9a and Fig. 9b, the splitter bar 9 is provided with four secondary connecting passages 92. When the splitter bar 9 is installed in the housing 1, the main connecting passage 91 communicates the main feed port 4 with the main channel 2, Each sub-connecting channel 92 communicates with the corresponding sub-feed port 6 and the splitter channel 3. This splitter bar 9 is suitable for producing sheets with five layers of materials; as shown in Figures 10a and 10b, this splitter bar 9 is provided with Two auxiliary connecting channels 92, when the splitter rod 9 is installed in the housing 1, the main connecting channel 91 communicates the main feed port 4 with the main flow channel 2, and each auxiliary connecting channel 92 connects the corresponding auxiliary feed port 6 and the branch channel 3 is connected, and the other two auxiliary feed ports 6 are not connected with the corresponding flow channel 3 (the two flow channels 3 are closed at this time), and this flow distribution rod 9 is suitable for producing sheets with three layers of materials; as shown in the figure As shown in Figure 11a and Figure 11b, the splitter rod 9 is provided with three secondary connecting channels 92. When the splitter rod 9 is installed in the housing 1, the main connecting channel 91 communicates the main feed port 4 with the main channel 2, and each secondary connection Passage 92 communicates with corresponding sub-feed port 6 and runner 3, and another sub-feed port 6 is not communicated with corresponding runner 3 (at this moment, the runner 3 is closed), and this splitter rod 9 is suitable for production Sheet with four layers of material.

In the case of producing a two-color plastic packaging material composed of two different color materials in the width direction, the number of secondary connecting channels 92 is determined according to the number of diversion grooves on the diversion member 10 . For example, as shown in FIG. 12a and FIG. 12b, corresponding to the flow guide member 10 shown in FIG. 6a and FIG. When, the main connecting channel 91 communicates with the main feed port 4 and the main flow channel 2, each secondary connecting channel 92 communicates with the corresponding secondary feed port 6 and the runner 3, and the other two secondary feed ports 6 are not connected with the corresponding The flow channel 3 (that is, the lower pair of flow channels 3) communicates (the lower pair of flow channels 3 are closed at this time); Corresponding to the component 10, this splitter rod 9 is provided with a secondary connecting passage 92. When the splitter rod 9 is installed in the housing 1, the main connecting passage 91 communicates the main feed port 4 with the main channel 2, and the secondary connecting passage 92 The corresponding sub-feed inlet 6 is communicated with the runner 3 (a runner 3 above), and the other three sub-feed inlets 6 are not communicated with the corresponding runner 3 (the three runners 3 are not connected at this time). closure).

The working principle of this allocator is briefly described below:

During installation and use, the main feed port 4 is connected to the main extruder, the four auxiliary feed ports 6 are respectively connected to an auxiliary extruder, and the discharge port 5 is connected to the extrusion die.

When it is necessary to produce multi-layer plastic packaging materials in the thickness direction, according to the actual number of layers of the sheet to be produced, the materials used in each layer, etc., select the appropriate shunt rod 9 and partition 7, and install them in the housing 1 Then, according to the ratio of each layer of the sheet, by turning the two adjusting bolts 86, one end of the adjusting rod 83 located between the ends of the two adjusting bolts 86 is driven to move, so that the connecting shaft 82 can be rotated, thereby driving the throttling block 81 Rotate, properly adjust the position of the throttling block 81, realize the conduction or closure of the corresponding flow channel 3, and control the flow rate. The rotation of the throttling block 81 can be carried out without stopping the machine; when the extrusion die extrudes After qualified sheets, normal production can be carried out. The material extruded by the main extruder flows toward the discharge port 5 through the main feed port 4, the main connecting channel 91, and the main channel 2; the material extruded by the auxiliary extruder passes through the auxiliary feeding port 6, the auxiliary connecting channel 92, The sub-runner 3 flows to the main channel 2 and recombines with the material in the main channel 2 to form multi-layer materials arranged from front to back in the main channel 2; finally, the composite multi-layer materials flow out from the discharge port 5 to the extrusion Out of the die and extruded into sheets.

When it is necessary to produce a two-color plastic packaging material composed of two different color materials in the width direction, referring to Figure 5, the two partitions 7 at the intersection of the upper pair of runners 3 and the main runner 2 can be replaced with 6a and 6b shown in the guide member 10 or as shown in FIG. Adjust the bolts 86 to adjust the positions of the four throttling blocks 81 respectively. The upper pair of throttling blocks is in contact with the flow guiding parts, and the lower pair of throttling blocks closes the lower pair of flow passages 3 ; After the qualified sheet is extruded from the extrusion die, normal production can be carried out. When it needs to be converted to produce multi-layer plastic packaging materials in the thickness direction again, the flow guide member 10 at the intersection of the upper pair of runners 3 and the main channel 2 is replaced with two partitions 7, and a suitable one is replaced. The shunt rod 9, and then properly adjust the position of the four throttling blocks 81.

In other embodiments, if the sub-runners in the distributor are not symmetrically arranged in pairs on both sides of the main channel, then at a junction of the main channel and the sub-runners, the main channel communicates with a sub-runner. In the case of a two-color plastic packaging material composed of two different color materials in the width direction, as shown in Figure 14a and Figure 14b, the guide part 11 used is provided with a main guide groove 111 and a branch guide groove 112; The upper end opening of the main flow channel 111 communicates with the main channel above the flow guide part 11, and the lower end opening of the main flow channel 111 communicates with the left half or the right half of the main channel below the flow guide part 11; The upper opening communicates with the sub-flow channel, and the lower opening of the sub-drain channel 112 communicates with the right half or the left half of the main channel below the flow guide member 11 . Correspondingly, the shunt rod 9 as shown in Fig. 13a and Fig. 13b can be used. A bar-shaped plug 113 matching the bar-shaped slot is provided on the flow guiding component 11 .

In other embodiments, if the distributor is provided with an even number (generally four or two) runners, and the runners are symmetrically arranged on both sides of the main channel in pairs; The main channel is set on the front side of the main channel, and the other sub-runner is set on the back side of the main channel. At a certain intersection of the main channel and the sub-runner, the main channel is connected to the two sub-runners, and the production is in the width direction. In the case of a two-color plastic packaging material made of materials of different colors, a first sub-drain groove and a second sub-drain groove are arranged in the used flow guide part, and the upper end opening of the first sub-drain groove is connected to the front side. The shunt channel is connected, and the lower opening of the first diversion channel is connected with the left half or the right half of the main channel below the guide member; the upper opening of the second diversion channel is connected with the rear side channel, and the second The opening at the lower end of the sub-guiding groove communicates with the right half or the left half of the main flow channel below the flow guiding component. Correspondingly, the splitter bar used is provided with two auxiliary connecting passages for communicating with the corresponding auxiliary feeding port and the branch channel, but there is no main connecting channel for connecting the main feeding port and the main channel.

In other embodiments, if the distributor is provided with an even number (generally four or two) runners, and the runners are symmetrically arranged on both sides of the main channel in pairs; It is set on the front side of the main flow channel, another branch channel is set on the rear side of the main flow channel, and at a certain intersection of the main flow channel and the branch flow channel, the main flow channel communicates with the two branch flow channels, then this kind of distributor is also suitable for production in Three-color plastic packaging material composed of three different color materials in the width direction. At this time, the guide part used is provided with a main guide channel and two sub-channels, one of which is located on the main guide channel. On the front side of the main flow channel, another sub-drain channel is located on the rear side of the main flow channel; the upper opening of the main flow channel communicates with the main flow channel above the flow guide part, and the lower end opening of the main flow guide channel connects with the main flow channel below the flow guide part. The middle part is connected; the upper opening of the sub-drain channel on the front side communicates with the shunt channel on the front side, and the lower end opening of the sub-drain channel on the front side communicates with the right part or left part of the main channel below the flow guide part; The upper opening of the rear sub-drain channel communicates with the rear sub-flow channel, and the lower opening of the rear sub-drain channel communicates with the left or right part of the main channel below the flow guide component. Usually, at the lower end of the diversion component, the lower opening of the sub-drain channel on the front side, the lower end opening of the main flow channel and the lower opening of the sub-drain channel on the rear side are sequentially connected, so that the material flowing out of the main flow channel The two sides of the two sides are just respectively spliced together with the materials flowing out from the two sub-drains, and the interface between the materials is aligned with the dividing line between the lower opening of the main ditch and the lower opening of the sub-drains. In addition, in the above-mentioned flow guiding member, the lower end opening of a sub-guiding groove (the sub-guiding groove on the front side or the sub-guiding groove on the rear side) may also be communicated with the middle part of the main channel below the flow-guiding component, and the leading The lower end opening of the flow channel and the lower end opening of the other sub-drain channel communicate with the right part and the left part of the main flow channel under the flow guiding component respectively. Correspondingly, the shunt rod 9 as shown in Fig. 12a and Fig. 12b can be used.

Claims (10)

1, a kind of distributor comprises housing, is provided with sprue and at least one runner in the housing, and each runner is communicated with sprue respectively, it is characterized in that: the intersection of described runner and sprue removably is equipped with diversion component.

2, distributor according to claim 1 is characterized in that: be provided with the strip slot that is used to install diversion component in the described housing, diversion component is provided with the strip inserted block that is complementary with described strip slot, and the strip inserted block is in the strip slot.

3, distributor according to claim 2 is characterized in that: described strip slot is located at the upside of the material outlet of runner.

4, according to each described distributor of claim 1-3, it is characterized in that: described diversion component is a dividing plate, dividing plate is removably mounted on the upside of the material outlet of runner, dividing plate is separated runner and sprue, dividing plate is in the part of the side formation sprue inwall of sprue one side, and dividing plate is in the part of the side formation runner inwall of runner one side; The material outlet of runner is connected with the front side of sprue or rear side.

5, according to each described distributor of claim 1-3, it is characterized in that: be provided with leading chute and split flow groove in the described diversion component; The upper end open of leading chute is communicated with the sprue of diversion component top, and the lower ending opening of leading chute is communicated with the left side or the right-hand part of the sprue of diversion component below; The upper end open of split flow groove is communicated with runner, and the lower ending opening of split flow groove is communicated with the right-hand part or the left side of the sprue of diversion component below.

6, according to each described distributor of claim 1-3, it is characterized in that: described distributor has a pair of runner that is arranged on the sprue both sides in pairs symmetrically, in these two paired runners, a runner is arranged on the front side of sprue, and another runner is arranged on the rear side of sprue; Be provided with leading chute and two split flow grooves in the diversion component, one of them split flow groove is located at the front side of leading chute, and another split flow groove is located at the rear side of leading chute; The upper end open of leading chute is communicated with the sprue of diversion component top, and the lower ending opening of leading chute is communicated with the left side or the right-hand part of the sprue of diversion component below; The upper end open of the split flow groove of front side is communicated with the runner of front side, the upper end open of the split flow groove of rear side is communicated with the runner of rear side, and the lower ending opening of the lower ending opening of the split flow groove of front side and the split flow groove of rear side all is communicated with the right-hand part or the left side of the sprue of diversion component below.

7, according to each described distributor of claim 1-3, it is characterized in that: described distributor has a pair of runner that is arranged on the sprue both sides in pairs symmetrically, in these two paired runners, a runner is arranged on the front side of sprue, and another runner is arranged on the rear side of sprue; Be provided with the first split flow groove and the second split flow groove in the diversion component, the upper end open of the first split flow groove is communicated with the runner of front side, and the lower ending opening of the first split flow groove is communicated with the left side or the right-hand part of the sprue of diversion component below; The upper end open of the second split flow groove is communicated with the runner of rear side, and the lower ending opening of the second split flow groove is communicated with the right-hand part or the left side of the sprue of diversion component below.

8, according to each described distributor of claim 1-3, it is characterized in that: described distributor has a pair of runner that is arranged on the sprue both sides in pairs symmetrically, in these two paired runners, a runner is arranged on the front side of sprue, and another runner is arranged on the rear side of sprue; Be provided with leading chute and two split flow grooves in the diversion component, one of them split flow groove is located at the front side of leading chute, and another split flow groove is located at the rear side of leading chute; The upper end open of leading chute is communicated with the sprue of diversion component top, and the lower ending opening of leading chute is communicated with the mid portion of the sprue of diversion component below; The upper end open of the split flow groove of front side is communicated with the runner of front side, the upper end open of the split flow groove of rear side is communicated with the runner of rear side, and the lower ending opening of the lower ending opening of the split flow groove of front side and the split flow groove of rear side is communicated with the right side part and the left part of the sprue of diversion component below respectively.

9, according to each described distributor of claim 1-3, it is characterized in that: the downside of the material outlet of described each runner respectively is provided with a control valve, and this control valve comprises a throttle block and connecting axle, and throttle block is fixed on the connecting axle; Connecting axle is installed in the housing and has at least an end to be in outside the housing.

10, according to each described distributor of claim 1-3, it is characterized in that: described housing is provided with main charging aperture and discharging opening, and main charging aperture and discharging opening are all corresponding with sprue; Housing is provided with a plurality of secondary charging apertures, and secondary charging aperture quantity is identical with runner and corresponding one by one; Shunting rod removably is installed in the housing, and the shunting rod is provided with the main interface channel that is used to be communicated with main charging aperture and sprue and at least one is used to be communicated with the corresponding secondary charging aperture and the secondary interface channel of runner.

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