Waste removing device in extrusion blowing machine

Abstract

The invention discloses a waste removing device in an extrusion blowing machine, which comprises a first upright mounting plate and a second upright mounting plate, a top waste removing device is arranged on the second upright mounting plate, a top waste removing device is arranged on the first upright mounting plate, and the top waste removing device comprises a top waste removing guide rail arranged on the first upright mounting plate, a top waste removing guide rail arranged on the second upright mounting plate and a top waste removing guide rail arranged on the second upright mounting plate, a waste ejection removal sliding block is arranged on the waste ejection removal guide rail in a sliding mode, a waste ejection removal driving device is arranged on the first vertical installation plate, a driving rod of the waste ejection removal driving device is connected with the waste ejection removal sliding block, a waste ejection removal base is arranged on the waste ejection removal sliding block, and a waste ejection puncture driving device is arranged on the waste ejection removal base. A waste ejection puncture push plate is arranged on a drive rod of the waste ejection puncture drive device, a puncture needle is arranged on the waste ejection puncture push plate, and a puncture needle avoiding via hole is formed in the waste ejection removal device. The waste removing device is mainly used for removing waste edges on the top faces of plastic products such as stacking barrels which are formed through extrusion blowing and are large in size.

Description

TECHNICAL FIELD

[0001] The present application relates to the extrusion blow molding machine in the plastic machinery industry, and particularly relates to a waste removing device in the extrusion blow molding machine. BACKGROUND

[0002] It is known that the extrusion blow molding process is usually used for the stacking barrels with large volume and complex structure. After the extrusion blow molding, the waste edges on the top and bottom need to be removed, that is, the so-called waste removing, and then the finished product can be obtained. In the actual process of removing the waste edge on the top, a two-step method is usually used, that is, first, the waste edge on the top is removed, and then, the waste edge below the handle is removed. After the waste edge on the top is removed, it needs to be manually taken away, which not only increases the labor cost, but also, since the temperature of the removed waste edge is high, once it falls, it will affect the personal safety of the surrounding personnel, and there is a safety hazard. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a waste removing device in an extrusion blow molding machine which can automatically and reliably remove the waste.

[0004] To solve the above technical problem, the technical scheme adopted by the present application is as follows: a waste removing device in an extrusion blow molding machine, comprising: oppositely arranged first and second vertical mounting plates, the second vertical mounting plate is provided with a top waste removing device at the top thereof, the first vertical mounting plate is provided with a top waste removing device matched with the top waste removing device, the specific structure of the top waste removing device comprises: a top waste removing guide rail provided on the first vertical mounting plate, a top waste removing sliding block slidably arranged on the top waste removing guide rail, a top waste removing driving device provided on the first vertical mounting plate and driving the top waste removing sliding block to move, a driving rod of the top waste removing driving device connected with the top waste removing sliding block, a top waste removing seat provided on the top waste removing sliding block and exceeding the top waste removing sliding block at the upper portion, a top waste puncture driving device provided on the top waste removing seat and arranged towards the second vertical mounting plate, a top waste puncture push plate provided on the driving rod of the top waste puncture driving device, and a puncture needle provided on the top waste puncture push plate, and the top waste removing device is provided with a puncture needle avoiding through hole corresponding to the puncture needle.

[0005] As a preferred scheme, in the waste removing device in the extrusion blow molding machine, the top waste removing seat is provided with puncture guide rods parallel to the driving rod of the top waste puncture driving device on both sides of the driving rod of the top waste puncture driving device, and the both ends of the top waste puncture push plate are respectively provided with puncture guide holes corresponding to the corresponding puncture guide rods, and the puncture guide rods are movably arranged in the corresponding puncture guide holes of the top waste puncture push plate.

[0006] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, the end of the two piercing guide rods is connected with a guide connecting plate, and the guide connecting plate is provided with a piercing needle guide through hole corresponding to the piercing needle.

[0007] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, the specific structure of the top waste removing device comprises: a top waste removing seat arranged on the second vertical mounting plate, a top waste removing drive device arranged on the outer side of the top waste removing seat towards the first vertical mounting plate, a top waste removing frame slidingly arranged on the inner side of the top waste removing seat, a drive rod of the top waste removing drive device connected with the top waste removing frame, a top waste removing switching shaft movably arranged in the top waste removing frame, a flat cutting tool and a digging cutting tool arranged on the top waste removing switching shaft, the piercing needle avoiding through hole arranged on the flat cutting tool, a gear rack box arranged on one side of the top waste removing frame, a switching rack slidingly arranged in the gear rack box, the advancing and retreating direction of the switching rack being consistent with the advancing and retreating direction of the drive rod of the top waste removing drive device, a switching rack drive device arranged on the gear rack box and used for driving the switching rack to advance and retreat, and corresponding ends of the top waste removing switching shaft extending out of the top waste removing frame and being provided with switching gears engaged with the switching rack.

[0008] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, the gear rack box is provided with rack guide blocks on both sides of the switching rack, so that the switching rack is bound in the guide groove formed by the rack guide blocks on both sides.

[0009] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, the top waste removing frame is arranged in the following manner: at least one top waste removing guide rod is arranged on the top waste removing frame on both sides of the drive rod of the top waste removing drive device, all the top waste removing guide rods are parallel to each other, the top waste removing seat is provided with top waste removing guide holes corresponding to the top waste removing guide rods one by one, and the top waste removing guide rods are slidingly arranged in the corresponding top waste removing guide holes of the top waste removing seat.

[0010] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, at least one pair of top waste removing guide rods is arranged on the top waste removing frame on both sides of the drive rod of the top waste removing drive device.

[0011] As a preferred scheme, in the waste removing device of the extrusion blow molding machine, the first vertical mounting plate and the second vertical mounting plate are provided with a bottom waste removing device at the bottom thereof.

[0012] As a preferred scheme, the bottom waste removing device in the waste removing device of the extrusion blowing machine comprises: a first bottom waste removing mounting plate arranged on the first vertical mounting plate and protruding downward from the first vertical mounting plate, a second bottom waste removing mounting plate arranged on the second vertical mounting plate and protruding downward from the second vertical mounting plate, the first bottom waste removing mounting plate is movably arranged with a first waste removing guide frame towards the second bottom waste removing mounting plate, the second bottom waste removing mounting plate is movably arranged with a second waste removing guide frame towards the first bottom waste removing mounting plate, the second bottom waste removing mounting plate is arranged with a bottom waste removing driving device, a driving rod of the bottom waste removing driving device is connected with the second waste removing guide frame, the inner ends of the first waste removing guide frame and the second waste removing guide frame are respectively arranged with bottom waste removing cutters matched with each other, and the first waste removing guide frame is arranged with an elastic reset component between the first waste removing guide frame and the bottom waste removing cutter arranged on the first waste removing guide frame.

[0013] As a preferred scheme, the bottom waste removing device in the waste removing device of the extrusion blowing machine comprises: a first bottom waste removing mounting plate arranged on the first vertical mounting plate and protruding downward from the first vertical mounting plate, a second bottom waste removing mounting plate arranged on the second vertical mounting plate and protruding downward from the second vertical mounting plate, the first bottom waste removing mounting plate is movably arranged with a first waste removing guide frame towards the second bottom waste removing mounting plate, the second bottom waste removing mounting plate is movably arranged with a second waste removing guide frame towards the first bottom waste removing mounting plate, the second bottom waste removing mounting plate is arranged with a bottom waste removing driving device, a driving rod of the bottom waste removing driving device is connected with the second waste removing guide frame, the inner ends of the first waste removing guide frame and the second waste removing guide frame are respectively arranged with bottom waste removing cutters matched with each other, and the first waste removing guide frame is arranged with an elastic reset component between the first waste removing guide frame and the bottom waste removing cutter arranged on the first waste removing guide frame.

[0014] The present application has the following advantages:

[0015] 1. The top waste removing device is arranged opposite to the top waste removing driving device, so that the top surface waste edge cut by the top waste removing driving device can be automatically removed from the waste cutting station, and manual removal by a dedicated staff is no longer needed, thereby reducing labor cost and eliminating safety hazards.

[0016] 2. The pair of puncture guide rods and the guide connecting plate connected to the ends of the pair of puncture guide rods are arranged on the top waste removing seat, so that the movement track of the puncture needle is more straight, and thus the puncture needle can accurately pass through the hole avoiding the puncture needle on the top waste removing device each time, and the puncture work can be smoothly performed.

[0017] 3. The top waste removing device, by setting the switching device of the switching rack and the switching gear, cleverly realizes the first cutting and the second cutting of the waste edge on the top surface, and the waste edge under the handle, so that the structure of the whole top waste removing device is very compact, and the manufacturing cost is saved.

[0018] 4. The rack guide block is arranged on both sides of the switching rack, so that the movement track of the switching rack is more straight.

[0019] 5. The top waste removing frame is provided with a top waste removing guide rod on both sides, and a corresponding top waste removing guide hole is formed in the top waste removing seat, the top waste removing guide rod is arranged in the corresponding top waste removing guide hole of the top waste removing seat, so that the operation of the top waste removing frame is more stable, thereby ensuring the precision of the top waste removing.

[0020] 6. The bottom waste removing device is arranged, the top waste and the bottom waste are removed at one time in the waste removing station, the finished product is obtained, and the automation degree and the production efficiency are greatly improved.

[0021] 7. The bottom waste removing device is arranged on both sides of the first waste removing guide frame and the second waste removing guide frame, the first waste removing guide frame and the second waste removing guide frame are provided with the bottom waste removing cutter which is matched with each other, the bottom waste removing driving device is arranged on the second bottom waste removing plate, and the elastic reset component is arranged between the first waste removing guide frame and the corresponding bottom waste removing cutter, so that the two bottom waste removing cutters are always elastically abutted together when the bottom waste is cut, so that the cutting of the bottom waste is more smooth. DETAILED DESCRIPTION

[0022] Figures 1 to 3 It is a three-dimensional structure schematic view of the waste removing device from different angles.

[0023] Figure 4 It is Figure 1 the enlarged structure schematic view of part A in the figure.

[0024] Figures 1 to 41, first vertical mounting plate, 17, top scrap removal mounting plate, 18, top scrap removal cylinder mounting seat, 2, second vertical mounting plate, 3, top scrap removal cylinder, 30, top scrap removal seat, 31, guide sleeve, 32, top scrap removal guide rod, 33, top scrap removal frame, 35, top scrap removal switching shaft, 351, switching gear, 36, tool connecting plate, 38, flat cutting tool, 381, needle avoiding via hole, 39, digging cutting tool, 4, switching rack cylinder, 40, gear rack box, 43, switching rack, 45, rack guide block, 47, mounting bottom plate, 5, bottom scrap removal cylinder, 50, second bottom scrap removal mounting plate, 53, second bottom scrap removal guide frame, 530, driving connecting plate, 531, driving sliding rod, 54, driving bottom scrap removal tool, 55, first bottom scrap removal mounting plate, 56, first bottom scrap removal guide frame, 560, passive connecting plate, 561, passive sliding rod, 58, reset spring, 59, passive bottom scrap removal tool, 7, top scrap puncture cylinder, 70, top scrap removal seat, 71, puncture guide rod, 72, guide connecting plate, 73, top scrap removal cylinder, 733, coupling, 74, top scrap puncture push plate, 76, needle, 77, top scrap removal guide rail, 78, top scrap removal sliding block, 9, stacking barrel. DETAILED DESCRIPTION

[0025] The detailed implementation scheme of the scrap removal device in the extrusion blowing machine is described in detail below in combination with the drawings.

[0026] As Figures 1 to 3The application discloses a waste removing device in an extrusion-blowing machine, which comprises oppositely arranged first and second vertical installation plates 1 and 2, wherein the second vertical installation plate 2 is provided with a top waste removing device, and the specific installation structure of the top waste removing device comprises a top waste removing seat 30 arranged on the second vertical installation plate 2 and extending beyond the second vertical installation plate 2, a top waste removing electric cylinder 3 serving as a top waste removing driving device is arranged on the outer side of the top waste removing seat 30 and faces the first vertical installation plate 1, a top waste removing frame 33 is slidably arranged on the inner side of the top waste removing seat 30, the driving rod of the top waste removing electric cylinder 3 is connected with the top waste removing frame 33, and the specific arrangement mode of the top waste removing frame 33 is that a pair of top waste removing guide rods 32 arranged in an up-down mode are arranged on the left and right sides of the driving rod of the top waste removing electric cylinder 3 on the top waste removing frame 33, all the top waste removing guide rods 32 are parallel to each other, and each pair of top waste removing guide rods 32 arranged on the left and right sides is symmetrically arranged on the upper and lower sides of the horizontal line of the driving rod of the top waste removing electric cylinder 3, the top waste removing seat 30 is provided with a top waste removing guide hole corresponding to each top waste removing guide rod 32, a guide sleeve 31 is arranged in the top waste removing guide hole, and the top waste removing guide rod 32 is slidably arranged in the corresponding top waste removing guide sleeve 31 of the top waste removing seat 30; the top waste removing frame 33 is movably provided with a top waste removing switching shaft 35, the top waste removing switching shaft 35 is provided with a horizontal cutting tool 38 through a cutter connecting plate 36, the top end of the horizontal cutting tool 38 is provided with a downward arranged digging cutting tool 39, a pair of horizontally arranged needle avoiding through holes 381 are formed in the horizontal cutting tool 38, and the top waste removing frame 33 is provided with a gear rack box 40 on the right side thereof. Figure 2 Figure 4 ​As shown, the gear rack box 40 is provided with a switching rack 43 slidingly arranged through the mounting bottom plate 47, the advancing and retreating direction of which is consistent with the advancing and retreating direction of the drive rod of the top waste cylinder 3, the mounting bottom plate 47 is provided with rack guide blocks 45 on both sides of the switching rack 43, so that the switching rack 43 is bound in the guide groove formed by the rack guide blocks 45 on both sides, the corresponding side of the gear rack box 40 is provided with a switching rack cylinder 4 for driving the switching rack 43 to advance and retreat, as a switching rack driving device, the corresponding end of the top waste switching shaft 35 extends out of the top waste frame 33 and is provided with a switching gear 351 engaged with the switching rack 43; the first upright mounting plate 1 is provided with a top waste removal mounting plate 17 which is above the first upright mounting plate 1, the top waste removal mounting plate 17 is provided with a top waste removal device matched with the top waste removal device, the specific structure of the top waste removal device comprises: a top waste removal guide rail 77 arranged on the top waste removal mounting plate 17, a top waste removal sliding block 78 slidingly arranged on the top waste removal guide rail 77, a top waste removal cylinder mounting seat 18 arranged on the top waste removal mounting plate 17, a top waste removal cylinder 73 arranged on the top waste removal cylinder mounting seat 18 and driving the top waste removal sliding block 78 to move, as a top waste removal driving device, the drive rod of the top waste removal cylinder 73 is connected with the top waste removal sliding block 78 through a shaft coupling 733, the top waste removal sliding block 78 is provided with a top waste removal seat 70 above the top waste removal sliding block 78, the top waste removal seat 70 is provided with a top waste puncture cylinder 7 arranged towards the second upright mounting plate 2 on the upper side of the outer side thereof, as a top waste puncture driving device, the drive rod of the top waste puncture cylinder 7 is provided with a top waste puncture push plate 74, the two sides of the top waste puncture push plate 74 are respectively provided with a puncture needle 76 corresponding to the puncture needle avoiding through hole 381 on the flat cutting tool 38, the inner side of the top waste removal seat 70 is provided with a puncture guide rod 71 parallel to the drive rod of the top waste puncture cylinder 7 vertically on both sides of the horizontal direction of the drive rod of the top waste puncture cylinder 7, both ends of the top waste puncture push plate 74 are respectively provided with a puncture guide hole corresponding to the corresponding puncture guide rod 71, the puncture guide rod 71 is movably arranged in the corresponding puncture guide hole of the top waste puncture push plate 74, the ends of the two puncture guide rods 71 are connected with a guide connecting plate 72, the guide connecting plate 72 is provided with a puncture needle guide through hole corresponding to the puncture needle 76, and the two puncture needles 76 are movably arranged in the corresponding puncture needle guide through hole of the guide connecting plate 72 (which belongs to the conventional technology in the art and will not be described here).The bottom of the first and second vertical installation plates 1 and 2 is also provided with a bottom waste removing device, the specific structure of which comprises: a first bottom waste removing installation plate 55 provided on the first vertical installation plate 1 and extending downward beyond the first vertical installation plate 1, and a second bottom waste removing installation plate 50 provided on the second vertical installation plate 2 and extending downward beyond the second vertical installation plate 2, the first bottom waste removing installation plate 55 is movably provided with a first bottom waste removing guide frame 56 towards the second bottom waste removing installation plate 50, the first bottom waste removing guide frame 56 comprises: a pair of passive slide rods 561 arranged horizontally and parallel to each other and movably arranged in the first bottom waste removing installation plate 55 (generally, a through hole is formed on the first bottom waste removing installation plate 55, a guide sleeve is arranged in the through hole, so that the passive slide rods 561 are slidably arranged in the corresponding guide sleeves on the first bottom waste removing installation plate 55, which is a common technique in the art and will not be described here), the outer ends of the pair of passive slide rods 561 are connected by a passive connecting plate 560, the pair of passive slide rods 561 are respectively sleeved with a reset spring 58 on the inner side thereof, the inner ends of the pair of passive slide rods 561 are provided with a passive bottom waste removing cutter 59, the second bottom waste removing installation plate 50 is movably provided with a second bottom waste removing guide frame 53 towards the first bottom waste removing installation plate 55, the second bottom waste removing guide frame 53 comprises: a pair of active slide rods 531 arranged horizontally and parallel to each other and movably arranged in the second bottom waste removing installation plate 50 (generally, a through hole is formed on the second bottom waste removing installation plate 50, a guide sleeve is arranged in the through hole, so that the active slide rods 531 are slidably arranged in the corresponding guide sleeves on the second bottom waste removing installation plate 50, which is a common technique in the art and will not be described here), the outer ends of the pair of active slide rods 531 are connected by an active connecting plate 530, the inner ends of the pair of active slide rods 531 are connected with an active bottom waste removing cutter 54 matched with the passive bottom waste removing cutter 59, the outer side of the second bottom waste removing installation plate 50 is provided with a bottom waste removing electric cylinder 5 as a bottom waste removing driving device, the driving rod of the bottom waste removing electric cylinder 5 is connected with the middle part of the active connecting plate 530.

[0027] In actual use, the piercing needles 76 are moved to the scrap removing station by the top scrap removing cylinder 73, so that the two piercing needles 76 correspond to the corresponding piercing needle avoiding through holes 381 on the flat cutting tool 38, if the flat cutting tool 38 is not in the working position (vertical state), the switching rack cylinder 4 drives the switching rack 43 and the switching gear 351 to drive the top scrap removing switching shaft 35 to rotate counterclockwise, so that the flat cutting tool 38 is in the vertical state (working position), then the top scrap removing cylinder 3 drives the flat cutting tool 38 to move forward by the top scrap removing frame 33 to cut off the scrap on the top surface of the stacking barrel 9, at the same time, the piercing needles 76 pierce the scrap on the top surface of the stacking barrel 9 under the action of the top scrap piercing cylinder 7 and enter the corresponding piercing needle avoiding through holes 381 on the flat cutting tool 38, after the flat cutting tool 38 completely cuts off the scrap on the top surface of the stacking barrel 9, the top scrap removing frame 33 retreats to the home position, and the piercing needles 76 with the scrap cut from the top surface of the stacking barrel 9 leave the scrap removing station under the drive of the top scrap removing cylinder 73; then the switching rack cylinder 4 drives the switching rack 43 and the switching gear 351 to drive the top scrap removing switching shaft 35 to rotate clockwise, so that the flat cutting tool 39 is in the working position, then the top scrap removing cylinder 3 drives the flat cutting tool 39 to move forward by the top scrap removing frame 33 to cut off the scrap below the handle of the stacking barrel 9; while cutting off the scrap on the top of the stacking barrel 9, the bottom scrap removing device can be started to remove the scrap on the bottom surface of the stacking barrel 9, which will not be described here.

[0028] In summary, the above is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made in shape, structure, features and spirit according to the scope of the claims of the present application should be included in the scope of the claims of the present application.

Claims

1. A waste removal device for an extrusion blow molding machine, comprising: A first and second upright mounting plates are arranged opposite to each other. The second upright mounting plate is provided with a top waste removal device on its top. The first upright mounting plate is characterized by having a top waste removal device that cooperates with the top waste removal device. The specific structure of the top waste removal device includes: a top waste removal guide rail on the first upright mounting plate; a top waste removal slider slidably mounted on the top waste removal guide rail; a top waste removal drive device on the first upright mounting plate for driving the top waste removal slider; a drive rod of the top waste removal drive device connected to the top waste removal slider; a top waste removal seat extending beyond the top waste removal slider on the top waste removal slider; a top waste puncture drive device arranged towards the second upright mounting plate on the top waste removal seat; a top waste puncture push plate on the drive rod of the top waste puncture drive device; a puncture needle on the top waste puncture push plate; and a puncture needle avoidance hole corresponding to the puncture needle on the top waste removal device.

2. The waste removal device in an extrusion blow molding machine as described in claim 1, characterized in that, The top waste removal seat has puncture guide rods parallel to the drive rods of the top waste puncture drive device on both sides of the drive rod. The top waste puncture push plate has puncture guide holes corresponding to the corresponding puncture guide rods at both ends. The puncture guide rods are movably inserted into the corresponding puncture guide holes on the top waste puncture push plate.

3. The waste removal device in an extrusion blow molding machine as described in claim 2, characterized in that: The ends of the two puncture guide rods are connected to guide connecting plates, and the guide connecting plates are provided with puncture needle guide holes corresponding to the puncture needles.

4. The waste removal device in an extrusion blow molding machine as described in claim 1, characterized in that, The specific structure of the top waste removal device includes: a top waste removal seat mounted on a second vertical mounting plate; a top waste removal drive device mounted on the outer side of the top waste removal seat facing the first vertical mounting plate; a top waste removal frame slidably mounted on the inner side of the top waste removal seat; a drive rod of the top waste removal drive device connected to the top waste removal frame; a top waste removal switching shaft movably mounted on the top waste removal frame; a flat cutting tool and a digging tool mounted on the top waste removal switching shaft; a needle avoidance hole opened on the flat cutting tool; a gear rack box mounted on one side of the top waste removal frame; a switching rack slidably mounted in the gear rack box, the rack's forward and backward direction being consistent with the forward and backward direction of the drive rod of the top waste removal drive device; a switching rack drive device for driving the switching rack forward and backward on the gear rack box; and a corresponding end of the top waste removal switching shaft extending out of the top waste removal frame and mounted on a switching gear meshing with the switching rack.

5. The waste removal device in an extrusion blow molding machine as described in claim 4, characterized in that, The gear rack box has rack guide blocks on both sides of the switching rack, so that the switching rack is bound in the guide groove formed by the rack guide blocks on both sides.

6. The waste removal device in an extrusion blow molding machine as described in claim 4, characterized in that, The specific configuration of the top waste removal frame is as follows: at least one top waste removal guide rod is provided on both sides of the drive rod of the top waste removal drive device on the top waste removal frame. All the top waste removal guide rods are parallel to each other. The top waste removal seat is provided with top waste removal guide holes that correspond one-to-one with the top waste removal guide rods. The top waste removal guide rods are slidably disposed in the corresponding top waste removal guide holes on the top waste removal seat.

7. The waste removal device in an extrusion blow molding machine as described in claim 6, characterized in that, At least one pair of top waste removal guide rods are respectively provided on both sides of the drive rod of the top waste removal drive device on the top waste removal frame.

8. The waste removal device in an extrusion blow molding machine as described in claim 1, characterized in that, The first and second upright mounting plates are equipped with bottom waste removal devices at their bottoms.

9. The waste removal device in an extrusion blow molding machine as described in claim 8, characterized in that, The specific structure of the bottom waste removal device includes: a first bottom waste removal mounting plate disposed on a first vertical mounting plate, the lower part of which extends beyond the first vertical mounting plate; and a second bottom waste removal mounting plate disposed on a second vertical mounting plate, the lower part of which extends beyond the second vertical mounting plate. A first waste removal guide frame is movably disposed on the first bottom waste removal mounting plate toward the second bottom waste removal mounting plate, and a second waste removal guide frame is movably disposed on the second bottom waste removal mounting plate toward the first bottom waste removal mounting plate. A bottom waste removal driving device is disposed on the second bottom waste removal mounting plate, and the driving rod of the bottom waste removal driving device is connected to the second waste removal guide frame. The inner ends of the first waste removal guide frame and the second waste removal guide frame are respectively provided with mutually cooperating bottom waste removal cutters. An elastic reset component is disposed between the first waste removal guide frame and the bottom waste removal cutter mounted on the first waste removal guide frame.

10. The waste removal device in a blow extruder as described in claim 9, characterized in that, The elastic reset assembly includes two reset springs. The first waste removal guide frame includes a pair of horizontally arranged passive slide rods. The pair of passive slide rods are parallel to each other and movably pass through the first bottom waste removal mounting plate. The outer ends of the pair of passive slide rods are connected by a passive connecting plate, that is, the two ends of the passive connecting plate are connected to the outer ends of the pair of passive slide rods one-to-one. Each pair of passive slide rods has a reset spring sleeved on its inner side. The corresponding bottom waste removal cutter is located at the inner end of the pair of passive slide rods, that is, the two ends of the corresponding bottom waste removal cutter are connected to the inner end of the pair of passive slide rods. The ends are connected one-to-one; the second waste removal guide frame includes: a pair of horizontally arranged active slide rods, which are parallel to each other and movably pass through the second bottom waste removal mounting plate. The outer ends of the pair of active slide rods are connected through an active connecting plate, that is: the two ends of the active connecting plate are connected one-to-one with the outer ends of the pair of active slide rods. The corresponding bottom waste removal cutter is set at the inner end of the pair of active slide rods, that is: the two ends of the corresponding bottom waste removal cutter are connected one-to-one with the inner end of the pair of passive slide rods. The drive rod of the bottom waste removal driving device is connected to the middle of the active connecting plate.

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