CN206884116U - A docking device for a mold at the discharge end of an extruder - Google Patents

Abstract

The utility model discloses a docking device for a mold at the discharge end of an extruder, which includes a mobile trolley, the mobile trolley includes a mobile platform, a lifting adjustment seat located below the mobile platform, and a machine for connecting the mold located above the mobile platform. frame, the mobile platform is provided with a first displacement platform for placing the rack, and a first transmission mechanism is provided below the first displacement platform, which drives the first displacement platform to displace along the radial direction of the mold feed end, and the mobile platform and the second A second displacement platform for placing the first displacement platform is also arranged between the first displacement platforms, and a second transmission mechanism is arranged below the second displacement platform to drive the second displacement platform to displace along the axial direction of the mold feed end. The docking device passes through the first displacement platform and the second displacement platform, so that after the height adjustment of the mobile trolley by the lifting adjustment seat, further adjustment in the horizontal plane can be performed, which is beneficial to reduce the difficulty of docking and fixing, and improve the success rate of docking.

Description

A docking device for a mold at the discharge end of an extruder

technical field

The utility model relates to production equipment for plastic extruded products, in particular to a butt joint device for a mold at the discharge end of an extruder.

Background technique

The extrusion method of a plastic extruder generally refers to melting the plastic at a high temperature of about 200 degrees, and then forming the required shape when the molten plastic passes through a specific mold. Extrusion molding requires a deep understanding of plastic properties and Rich experience in mold design is a molding method with high technical requirements. Extrusion molding is a method in which materials are continuously passed through a die in a fluid state by heating and pressurizing in an extruder, also known as "extrusion molding". Compared with other molding methods, it has the advantages of high efficiency and low unit cost.

According to different product shapes, it is necessary to install different types of molds at the end of the plastic extruder. The discharge extrusion end 11 of the machine 1 and the mold feed end 21 are generally set in a cylindrical structure, and a flange 3 is set above the two. In actual operation, it is necessary to realize the discharge extrusion end 11 And the mold feed end 21 is coaxially docked, and after the docking, the flange 3 and the fastener are used to fix it. The above-mentioned docking process is realized by using a mobile trolley 4, and the mold 2 is fixed on the mobile trolley 4. When When the mold 2 is fixed on the mobile trolley 4, the end surface of the mold feeding end 21 is vertically arranged, and a plurality of lifting adjustment seats 5 are also arranged at the bottom of the mobile trolley 4, and the horizontal plane docking is realized through the horizontal movement of the mobile trolley 4, and then combined The lifting adjustment seat 5 completes the docking of the vertical plane.

After the height adjustment of the mobile trolley 4 is carried out by the lifting adjustment seat 5, the scroll wheel 42 under the mobile trolley 4 is in the air, so that further adjustment in the horizontal plane cannot be carried out, that is, the end surface of the extrusion end 11 and the feed end of the mold need to be completed before the height adjustment. The parallelism and spacing adjustment of the end faces of 21 make the adjustment difficult. When the end face of the extrusion end 11 and the end face of the die feed end 21 are not parallel to each other or the distance between the two is not satisfied and is approximately equal to zero, it is also necessary to use the lifting adjustment Seat 5 is adjusted back to the initial state, and the adjustment in the horizontal plane is carried out again;

The above situation makes it difficult to connect and fix the mold 2 when the plastic extruder 1 docks, and the success rate of docking is low. There are improvements in the prior art.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a docking device for the mold at the discharge end of the extruder. The docking device is provided with a first displacement platform and a second displacement platform, so that the lifting adjustment seat After adjusting the height of the mobile trolley, further adjustments can be made in the horizontal plane, which is conducive to reducing the difficulty of docking and fixing and improving the success rate of docking.

In order to achieve the above purpose, the utility model provides the following technical solutions: a docking device for the mold at the discharge end of the extruder, including a mobile trolley, the mobile trolley includes a mobile platform, and a lifting adjustment seat located below the mobile platform And the frame for connecting the mould, which is located above the mobile platform, is characterized in that the mobile platform is provided with a first displacement platform for placing the frame, and a first transmission mechanism is provided below the first displacement platform and passes through it. Drive the first displacement platform to displace in the radial direction of the mold feed end, a second displacement platform for placing the first displacement platform is also provided between the mobile platform and the first displacement platform, and a The second transmission mechanism drives the second displacement platform to displace along the axial direction of the mold feed end.

By adopting the above-mentioned technical scheme, when docking the extrusion end and the feed end of the mold, the first step is to move the trolley to horizontally displace the mold to complete the preliminary adjustment on the horizontal plane, and then lift the feed end of the mold to a suitable height through the lifting adjustment seat. Thus, the adjustment on the vertical surface is completed. At this time, according to the actual position of the mold feed end, further adjustments can be made on the horizontal plane of the mold feed end, and the first displacement platform is displaced along the radial direction of the mold feed end, so that the mold feed The end and the extrusion end can maintain a high coaxiality, and the second displacement platform can be displaced along the axial direction of the mold feed end, so that the mold feed end and the extrusion end can maintain a high degree of fit, which is beneficial to reduce the butt joint Fixed difficulty to improve docking success rate.

The utility model is further configured as follows: the first transmission mechanism includes a first screw rod threaded through the first displacement platform, a first guide rod passed through the first displacement platform, the first screw rod and the first guide rod They are all horizontally installed on the second displacement platform through the bearing seat.

By adopting the above technical solution, by rotating the first screw rod, the first displacement platform can move back and forth along the length direction of the first guide rod, and the screw drive has better adjustment stability and adjustment accuracy, so that the extrusion end face It can maintain a high degree of coaxiality with the end face of the feed end of the mold, which is beneficial to improve the butt joint accuracy.

The utility model is further configured as follows: a plurality of first positioning blocks are arranged under the first displacement platform, the first screw rod and the first guide rod pass through the first positioning blocks, and the first screw rod and the first positioning block Block thread fit.

By adopting the above technical solution, the arrangement of the first positioning block can reduce the overall weight of the first displacement platform while facilitating the installation and connection of the first screw rod and the first guide rod.

The utility model is further configured as follows: the second transmission mechanism includes a second threaded rod threaded through the second displacement platform, a second guide rod threaded through the second displacement platform, the second screw rod and the second guide rod All are horizontally installed on the mobile platform through the bearing seat.

By adopting the above technical solution, by rotating the second screw rod, the second displacement platform can move back and forth along the length direction of the second guide rod, and the screw drive has better adjustment stability and adjustment accuracy, so that the extrusion end face It can be closely attached to the end surface of the feed end of the mold, which is conducive to improving the docking accuracy.

The utility model is further configured as follows: a plurality of second positioning blocks are arranged under the second displacement platform, the second screw rod and the second guide rod pass through the second positioning block, and the second screw rod and the second positioning block Block thread fit.

By adopting the above technical solution, the arrangement of the second positioning block can reduce the overall weight of the second displacement platform while facilitating the installation and connection of the second screw rod and the second guide rod.

The utility model is further configured as follows: the ends of the first screw rod and the second screw rod are fixed with a rotary driving member for increasing the diameter of the end of the screw rod.

By adopting the above technical solution, by rotating the rotary driving member, and then driving the first screw rod or the second screw rod to rotate, the effect of labor-saving and convenient rotation can be achieved.

The utility model is further set as follows: the frame is provided with a cross swing assembly for swinging the feed end of the mold, the cross swing assembly includes a vertically arranged rotating ring, the mold is located in the rotating ring and rotates with it to drive The feeding end of the mold swings left and right, and the frame and the rotating ring rotate and cooperate to drive the feeding end of the mold to swing up and down.

By adopting the above technical scheme, when the close fit between the end surface of the discharge extrusion end and the end surface of the feed end of the mold cannot be achieved, the inclination or orientation of the end surface of the feed end can be changed by swinging up and down and left and right at the feed end of the mold , so that when the discharge extrusion end is docked with the mold feed end, the end faces of the two can be fitted together relatively closely, which is conducive to improving the docking accuracy. The outlet end is fixed with the flange plate on the feed end of the mold, which effectively reduces the difficulty of butt joint fixing.

The utility model is further set as: the frame is also provided with a locking mechanism for fixing the relative position between the mold and the frame after swinging up and down, and the locking mechanism includes a vertically arranged sleeve, which is located at the upper and lower sides of the sleeve. The end and the first screw rod and the second screw rod that are threadedly engaged with it, the first screw rod is hinged to the outer wall of the rotating ring, and the second screw rod is fixedly connected to the first displacement platform.

By adopting the above technical solution, the setting of the locking mechanism is beneficial to improve the structural balance on the one hand, and on the other hand, it plays a role of convenient adjustment. By rotating the sleeve at a fixed axis, the first screw and the second screw at both ends of the sleeve can be synchronized. The first screw drives the rotating ring and the feeding end of the mold to swing up and down synchronously to complete the adjustment of the inclination angle of the end face of the feeding end. Since the second screw is fixed on the first displacement platform and cannot move up and down, so When the feeding end of the mold needs to swing downward, the rotating sleeve, the sleeve and the first screw will move downward synchronously, and when the feeding end of the mold needs to swing upward, the rotating sleeve, the sleeve and the first screw will move Synchronized upward movement.

The utility model is further configured as follows: the side of the mold is extended with rotating rods arranged oppositely, the rotating rods are vertically arranged and a rotating ring is passed through.

By adopting the above technical scheme, when adjusting the orientation of the end face of the feed end of the mold, the mold forms rotational cooperation with the rotating ring through the rotating rods on both sides, and completes the left and right swing of the feed end of the mold.

The utility model is further configured as follows: the frame includes two uprights extending upward to the first displacement platform, the rotating ring is located between the uprights on both sides, and the side of the rotating ring is connected with supporting rods arranged oppositely, the The supporting rod is arranged horizontally and the rotating frame is arranged on the upper end of the column.

By adopting the above technical solution, when adjusting the inclination angle of the end face of the feed end of the mold, the mold forms a rotation fit with the upper end of the column through the support rods on both sides, and is connected to the upper end of the column by erection, which is convenient for installation and disassembly.

In summary, the utility model has the following beneficial effects:

First: The overall structure of the docking device for the mold at the discharge end of the extruder is relatively simple, easy to install and disassemble, and has high flexibility and scope of application;

Second: the mold for the discharge end of the extruder reduces the difficulty of docking and fixing the extrusion end and the feed end of the mold, and facilitates the installation and docking of the staff;

Third: The butt joint device for the mold at the discharge end of the extruder enables adaptive adjustment of the inclination angle of the end face of the feed end of the die relative to the horizontal plane, and at the same time enables adaptive adjustment of the orientation of the end face of the feed end of the die. Finally, the end face of the extrusion end and the end face of the feed end of the mold can be closely attached, which is conducive to improving the docking accuracy;

Fourth: The docking device for the mold at the discharge end of the extruder is provided with a first displacement platform and a second displacement that move in a certain direction, so that after the height adjustment of the mobile trolley is performed on the lifting adjustment seat, further movement in the horizontal plane can be performed. Adjustment is beneficial to reduce the difficulty of docking and fixing, and improve the success rate of docking.

Description of drawings

Fig. 1 is a structural schematic diagram of the specific docking of the prior art;

Fig. 2 is the structural representation of embodiment;

Fig. 3 is a partial structural schematic diagram of the embodiment, which is mainly used to embody the structure of components on the first displacement platform, the second displacement platform and the mobile platform;

Fig. 4 is a partial structural schematic diagram of the embodiment, which is mainly used to reflect the structure of the cross swing assembly and related components;

Fig. 5 is a structural schematic diagram of the locking mechanism in the embodiment.

Reference signs: 1, plastic extruder; 11, extrusion end; 2, mold; 21, mold feed end; 3, flange plate; 4, mobile trolley; 41, mobile platform; 42, rolling wheel; 43 , frame; 431, column; 5, lifting adjustment seat; 51, threaded rod; 52, base; 6, locking mechanism; 61, second screw rod; 62, sleeve; 621, square hole; 63, first screw rod; 64. Hinged seat; 7. Support rod; 8. Limiting block; 9. Split bearing seat; 10. Rotating ring; 12. First displacement platform; 121. First positioning block; 13. Second displacement platform; 131 1, the second positioning block; 14, the first transmission mechanism; 141, the first screw mandrel; 142, the first guide rod; 15, the second transmission mechanism; 151, the second screw rod; 152, the second guide rod; 16, Bearing seat; 17, hand wheel; 18, turning rod.

detailed description

The embodiment of the utility model will be further described with reference to Fig. 2 to Fig. 5 .

A docking device for a mold at the discharge end of an extruder, mainly used for coaxial docking and fixing between the discharge extrusion end 11 of a plastic extruder 1 and the feed end 21 of a mold, as shown in Figure 2, The docking device specifically includes a mobile trolley 4 and a cylindrical mold 2 positioned on the mobile trolley 4. The cylindrical mold 2 is arranged horizontally, and the mobile trolley 4 includes a horizontally arranged mobile platform 41. Below the mobile platform 41, several rolling wheels 42 and The lifting adjustment seat 5 is provided with a frame 43 for connecting the mold 2 above the mobile platform 41. When docking and fixing, the adjustment of the horizontal plane is realized by moving the mobile trolley 4 horizontally, and then combined with the lifting adjustment seat 5 below the mobile platform 41 Complete the adjustment on the vertical height. After the adjustment is completed, the end surface of the discharge extrusion end 11 is closely attached to the end surface of the mold feed end 21, and the fastener is passed through the discharge extrusion end 11 and the mold feed end 21. The flange plate 3 completes the butt joint fixing.

As shown in Figure 2, the lifting adjustment seat 5 specifically includes a threaded rod 51 arranged vertically and a circular base 52 connected to the lower end of the threaded rod 51. The threaded rod 51 passes through the mobile platform 41 and is threadedly engaged with it. When performing upward height adjustment, the base 52 moves downward by rotating the threaded rod 51, and then lifts up the entire mobile platform 41 and the mold 2 moves upward. After the adjustment is completed, the rolling wheel 42 is suspended.

As shown in Figure 2, mobile platform 41 is also provided with second displacement platform 13 and first displacement platform 12 from bottom to top, frame 43 and mold 2 are installed on first displacement platform 12, between mobile platform 41 and second A second transmission mechanism 15 is arranged between the displacement platforms 13, and the movement of the second displacement platform 13 along the axial direction of the mold 2 is realized by it, and finally the movement of the mold 2 along its own axis direction is realized. Between the second displacement platform 13 and the first A first transmission mechanism 14 is arranged between the displacement platforms 12, and through it, the movement of the first displacement platform 12 along the radial direction of the mold 2 is realized, and finally the movement of the mold 2 along its own radial direction is realized;

When carrying out actual installation and docking, at first the preliminary adjustment in the horizontal plane is realized by moving the mobile trolley 4, and then the adjustment on the vertical height is completed in combination with the lifting adjustment seat 5 below the mobile platform 41. 21, further adjust the mold feed end 21 on the horizontal plane, and displace the first displacement platform 12 along the radial direction of the die feed end 21, so that the die feed end 21 and the extrusion end 11 can maintain a higher Concentricity, displacing the second displacement platform 13 along the axial direction of the die feed end 21 , so that the die feed end 21 and the extrusion end 11 can maintain a high degree of fit.

As shown in Figure 2 and Figure 3, the above-mentioned first transmission mechanism 14 specifically includes a first screw rod 141 and a first guide rod 142 positioned on both sides of the first screw rod 141, the first screw rod 141 and the first guide rod 142 are arranged in parallel, and the length extension direction of the first screw mandrel 141 is the radial direction of the mold feed end 21, in order to facilitate the connection between the first screw mandrel 141, the first guide rod 142 and the first displacement platform 12, in the A number of first positioning blocks 121 are fixed below the displacement platform 12, and the first screw mandrel 141 and the first guide rod 142 pass through the first positioning block 121 to realize the connection and fixation with the first displacement platform 12. The first screw rod 141 Cooperating with the first positioning block 121 in a threaded manner, the first screw rod 141 and the first guide rod 142 are threaded with bearing seats 16 at both ends, and are fixedly connected to the second displacement platform 13 through the bearing seats 16 .

The above-mentioned second transmission mechanism 15 specifically includes a second screw rod 151 and a second guide rod 152 positioned on both sides of the second screw rod 151. The second screw rod 151 and the second guide rod 152 are arranged in parallel. The length extension direction of 151 is the axial direction of the mold feed end 21, in order to facilitate the connection between the second screw mandrel 151, the second guide rod 152 and the second displacement platform 13, several first displacement platforms are fixed below the second displacement platform 13. Two positioning blocks 131, the second screw rod 151 and the second guide rod 152 pass through the second positioning block 131, so as to realize the connection and fixation with the second displacement platform 13, the second screw rod 151 and the second positioning block 131 are threaded fit , the first and last ends of the second screw rod 151 and the second guide rod 152 are pierced with a bearing seat 16 , and the fixed connection with the mobile platform 41 is realized through the bearing seat 16 .

All be provided with the rotary driving member at the end of first screw mandrel 141, and second screw mandrel 151, specifically can be hand wheel 17 as shown in Figure 2, also can use any convenience to increase screw mandrel end diameter, to facilitate Parts used to rotate the drive screw.

As shown in Figures 2 and 4, the frame 43 includes two vertical columns 431, and the mold 2 is located between the two columns 431. As the plastic extruder 1 is used for a longer period of time, its own structure will be deformed and shifted. This makes it impossible to achieve a close fit between the end surface of the discharge extrusion end 11 on the plastic extruder 1 and the end surface of the mold feed end 21, which makes it difficult for the fastener to pass through and fix the corresponding flange 3, which in turn makes the The overall docking and fixing is more difficult;

In view of the above problems, the frame 43 is also provided with a cross swing assembly for realizing the swing of the mold feed end 21. The cross swing assembly includes a vertically arranged rotating ring 10, and the mold 2 is located in the rotating ring 10. There are two support rods 7 extending horizontally on the side of 10, and the support rods 7 are arranged opposite to the center of the mold 2. In order to facilitate installation and disassembly, a split bearing seat 9 is fixedly connected to the upper end of the column 431. The split bearing seat 9 of this scheme is specifically: The upper and lower open and close structure, the support rods 7 on both sides are embedded in the open and close bearing seat 9, and the support rod 7 realizes the rotation cooperation with the column 431 through the open and close bearing seat 9. When the support rod 7 rotates, the rotating ring 10 and the The mold 2 rotates synchronously, finally realizes the up and down swing of the mold feed end 21, and changes the inclination angle of the end surface of the mold feed end 21 relative to the horizontal plane.

On the support rod 7, two ring-shaped limit blocks 8 are coaxially fixed, and the limit blocks 8 abut against the front and rear sides of the split bearing seat 9 along the length direction of the support rod 7, and the limit blocks 8 function to limit the mold. 2. For the purpose of displacement along the length direction of the support rod 7, the lower end of the limit block 8 is kept in contact with both sides of the upper end of the column 431. When the mold 2 has a tendency to displace along the length direction of the support rod 7, the limit block 8 distributes the force between On the column 431, it is beneficial to reduce the probability of damage to the split bearing seat 9 and prolong the service life of the split bearing seat 9.

As shown in Fig. 4 and Fig. 5, in order to fix the relative positions of the rotating ring 10 and the mold 2 after the frame 43 is rotated and fitted, a device for fixing the relative position between the first displacement platform 12 and the rotating ring 10 is also provided. Position locking mechanism 6, the locking mechanism 6 includes a sleeve 62 arranged vertically, a first screw 63 and a second screw 61 that are located at the upper and lower ends of the sleeve 62 and are threadedly engaged with it, and the upper end of the first screw 63 passes through the hinged seat 64 is rotatably connected to the lower end of the rotating ring 10 , and the lower end of the second screw 61 is fixedly connected to the first displacement platform 12 .

In order to facilitate the rotation of the sleeve 62, a square hole 621 is provided on the side of the sleeve 62, and a corresponding rod can be pierced in the square hole 621, and the rotation of the rod is used to drive the sleeve 62 to rotate on a fixed axis, so that the sleeve 62 The first screw 63 and the second screw 61 at both ends can move towards or move away from the sleeve 62 synchronously.

Because the second screw rod 61 is fixed on the first displacement platform 12 and cannot move up and down, so when the mold feed end 21 needs to swing downward, the sleeve 62 is rotated, the sleeve 62 and the first screw rod 63 will move downward synchronously, and When the mold feed end 21 needs to swing upwards, the sleeve 62 is rotated, and the sleeve 62 and the first screw 63 will move upwards synchronously. The first screw 63 synchronously drives the feed end 21 of the mold to swing up and down to complete the adjustment of the inclination angle of the end face of the feed end relative to the horizontal plane, so that the end face of the discharge extrusion end 11 and the end face of the feed end 21 of the die can be closely attached.

As shown in Figure 4, two rotating rods 18 that are arranged oppositely extend on the side of the mold 2. The rotating rods 18 are vertically arranged and pass through the rotating ring 10. In order to maintain the stability of the structure, the rotating rods 18 are connected to the mold 2 along the In the middle position of the self-axis direction, there is a gap between the outer wall of the mold 2 and the inner wall of the rotating ring 10. The left and right swing of the feeding end 21 of the mold is realized by the rotating rod 18, and the orientation of the end surface of the feeding end 21 of the mold is changed, so that the end surface of the extrusion end 11 It has a higher coaxiality when it is attached to the end face of the feed end 21 of the mold.

Specific working process:

First, the preliminary adjustment in the horizontal direction is completed by moving the trolley 4, and then the adjustment in the vertical direction is completed by the lifting adjustment seat 5;

At this time, according to the actual position of the mold feed end 21, the further adjustment of the mold feed end 21 on the horizontal plane can be carried out, and the first screw mandrel 141 can be rotated by a fixed axis so that the first displacement platform 12 can move along the mold feed end. 21 is displaced in the radial direction, and then drives the displacement of the mold 2, so that the mold feed end 21 and the extrusion end 11 can maintain a high coaxiality, and the second displacement platform 13 can be moved along the axis by rotating the second screw 151. The axial displacement of the feed end 21 of the mold makes the end surface of the feed end 21 of the mold and the end surface of the extrusion end 11 maintain a high degree of fit, reduces the difficulty of docking and fixing, and improves the success rate of docking and fixing.

In order to further improve the fitting degree between the end surface of the discharge extrusion end 11 and the end surface of the mold feed end 21 , it is convenient to carry out the penetration and fixing of the fasteners on the flange plate 3 .

According to the actual position between the end surface of the die feed end 21 and the end surface of the extrusion end 11, the sleeve 62 can be driven to rotate on a fixed axis through the rod, so that the sleeve 62 and the first screw 63 can move in the vertical direction, and the rotating ring 10 And the mold 2 can swing up and down with the support rod 7 as the fulcrum to complete the adjustment of the inclination angle of the end surface of the mold feed end 21 relative to the horizontal plane;

Push the mold feed end 21 along the horizontal direction, so that the mold 2 can swing left and right with the rotating rod 18 as the fulcrum, and complete the adjustment of the end face orientation of the mold feed end 21;

The adjustment of the inclination angle and orientation of the end surface of the feed end 21 of the mold is to improve the fit between the end surface of the extrusion end 11 and the end surface of the feed end 21 of the mold. Butt-fixing improves the precision of butt-fixing and reduces the difficulty of butt-fixing.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (10)

1. A docking device for a mold at the discharge end of an extruder, comprising a mobile trolley (4), the mobile trolley (4) including a mobile platform (41) and a lifting adjustment seat located below the mobile platform (41) (5) and the frame (43) for connecting the mold (2) above the mobile platform (41), characterized in that the mobile platform (41) is provided with a first displacement for placing the frame (43) platform (12), the first transmission mechanism (14) is arranged under the first displacement platform (12) and drives the first displacement platform (12) to displace along the radial direction of the mold feed end (21) through it, and the A second displacement platform (13) for placing the first displacement platform (12) is also provided between the mobile platform (41) and the first displacement platform (12), and a second displacement platform (13) is provided below the second displacement platform (13). The transmission mechanism (15) drives the second displacement platform (13) to displace along the axial direction of the mold feed end (21). 2. A docking device for a die at the discharge end of an extruder according to claim 1, characterized in that, the first transmission mechanism (14) includes a first displacement platform (12) threaded through the first displacement platform (12). A threaded rod (141), a first guide rod (142) passing through the first displacement platform (12), the first threaded rod (141) and the first guide rod (142) pass through the bearing seat (16) horizontally Installed on the second displacement platform (13). 3. A docking device for a die at the discharge end of an extruder according to claim 2, characterized in that a number of first positioning blocks (121) are arranged below the first displacement platform (12), so that The first screw rod (141) and the first guide rod (142) pass through the first positioning block (121), and the first screw rod (141) is threadedly engaged with the first positioning block (121). 4. The docking device for the mold at the discharge end of the extruder according to claim 2, characterized in that, the second transmission mechanism (15) includes a second displacement platform (13) threaded through the second displacement platform (13). The second screw rod (151), the second guide rod (152) passing through the second displacement platform (13), the second screw rod (151) and the second guide rod (152) pass through the bearing seat (16) horizontally Mounted on mobile platform (41). 5. The docking device for the mold at the discharge end of the extruder according to claim 4, characterized in that, a number of second positioning blocks (131) are arranged under the second displacement platform (13), so that The second screw rod (151) and the second guide rod (152) pass through the second positioning block (131), and the second screw rod (151) is threadedly engaged with the second positioning block (131). 6. The docking device for the mold at the discharge end of the extruder according to claim 4, characterized in that the ends of the first screw rod (141) and the second screw rod (151) are fixed and useful A rotary drive for increasing the diameter of the end of the screw. 7. The docking device for the mold at the discharge end of the extruder according to claim 6, characterized in that, the frame (43) is provided with a cross swing for swinging the feed end (21) of the mold Assembly, the cross swing assembly includes a vertical rotating ring (10), the mold (2) is located in the rotating ring (10) and rotates with it to drive the mold feed end (21) to swing left and right, the machine The frame (43) rotates and cooperates with the rotating ring (10) to drive the mold feeding end (21) to swing up and down. 8. A docking device for a mold at the discharge end of an extruder according to claim 7, characterized in that, the frame (43) is also provided with a device for fixing the mold (2) and the machine after swinging up and down. The locking mechanism (6) at the relative position between the frames (43), the locking mechanism (6) includes a vertically arranged sleeve (62), a second threaded threaded sleeve (62) located at the upper and lower ends of the sleeve (62). A screw (63) and a second screw (61), the first screw (63) is hinged to the outer wall of the rotating ring (10), and the second screw (61) is fixedly connected to the first displacement platform (12). 9. The docking device for the mold at the discharge end of the extruder according to claim 7, characterized in that, the side of the mold (2) is extended with a rotating rod (18) arranged oppositely, and the rotating rod (18) The rod (18) is arranged vertically and passes through the rotating ring (10). 10. A docking device for a mold at the discharge end of an extruder according to claim 7, wherein the frame (43) includes two uprights ( 431), the rotating ring (10) is located between the uprights (431) on both sides, the side of the rotating ring (10) is connected with supporting rods (7) arranged oppositely, and the supporting rods (7) are arranged horizontally And the turret is located at the upper end of the column (431).