A plasticizer quantitative feeding device in the production process of plastic products

Abstract

The invention discloses a plasticizer quantitative feeding device in the production process of plastic products, relates to the field of plastic product production and processing, and comprises: a rubber mixing machine frame and two rubber pressing cylinders rotatably assembled inside the rubber mixing machine frame, wherein the two rubber pressing cylinders rotate synchronously in opposite directions and are placed in parallel horizontally, and a receiving tray is placed below the rubber pressing cylinders. The invention enables a worker to trigger a low-position discharging unit and a portion feeding unit to operate by foot, so that the portion feeding unit can be lowered to approach the distance from the rubber material to be kneaded, so that when an external plasticizer falls, it will not be scattered to the outside of the rubber material to be kneaded due to excessive height, that is, the rated amount of external plasticizer cannot be fully added into the inside of the rubber material to be kneaded, thereby improving the accuracy of adding the external plasticizer, and through foot triggering, the hands of the worker can be freed, so that the hands of the worker can always pull the rubber material to be kneaded, and the rubber material is prevented from falling from between the two rubber pressing cylinders.

Description

Technical Field

[0001] The invention relates to the field of plastic product production and processing, and in particular to a plasticizer quantitative feeding device in the production process of plastic products. Background Art

[0002] Plasticizers used in plastic products are the largest type of additives in terms of quantity, output, and consumption among plastic additives. Their main function is to increase the plasticity of polymers, which is manifested in the decrease of hardness, modulus, softening temperature, and brittle temperature of polymers, while the elongation, flexibility, and toughness are increased. The plasticizers added in the production process of plastic products are external plasticizers, which are low-melting-point solids. External plasticizers interact with polymers mainly through swelling when the temperature is increased to form a solid solution, thereby increasing the plasticity of polymers. In the process of mixing rubber or silicone rubber through a rubber mixer, it is necessary to add plasticizers in a quantitative manner multiple times. Plasticizers are used to improve the plasticity and fluidity of rubber or silicone rubber, which is convenient for calendering, extrusion, and other molding operations.

[0003] When workers operate a rubber mixing machine to knead rubber or silicone rubber, the rubber or silicone rubber is squeezed between two smooth barrels. During the squeezing, workers are also required to pull the squeezed raw materials with both hands to assist in the kneading of the raw materials. During the kneading process, workers are also required to add plasticizers to the raw materials many times to extrude and mix the plasticizers with the raw materials to improve the plasticity of the raw materials. However, to add plasticizers, workers pour the plasticizers prepared in advance on the raw materials between the two barrels, and then knead the plasticizers into the raw materials under the squeezing of the two barrels for mixing. In the process of adding plasticizers, workers also need to pay attention to whether the raw materials extruded and transported downwards will stick to the barrel wall and roll up again. Therefore, when workers add plasticizers themselves, it is easy for the raw materials to fall from between the two extrusion barrels. Summary of the invention

[0004] The object of the present invention is to provide a plasticizer quantitative feeding device in the production process of plastic products to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A plasticizer quantitative feeding device in the production process of plastic products, comprising: a rubber mixer frame and two rubber pressing cylinders rotatably mounted inside the rubber mixer frame, the two rubber pressing cylinders are synchronously rotated in opposite directions, and the two rubber pressing cylinders are placed in parallel horizontally, a receiving tray is placed below the rubber pressing cylinders, and the receiving tray is fixedly mounted on the rubber mixer frame, a first bracket and a second bracket are fixedly mounted on the top of the rubber mixer frame, the second bracket is mounted on the top of the first bracket, and a main hopper is fixedly arranged inside the second bracket;

[0006] It also includes: a batch unloading unit, which is used to unload the material in the main hopper in batches and in a quantitative manner, and the batch unloading unit is located inside the first bracket;

[0007] The low-position discharging unit is used to shorten the distance between the discharging port of the component discharging unit and the kneaded rubber material, and the low-position discharging unit is located between the second bracket and the component discharging unit.

[0008] Preferably, the component unloading unit includes a sleeve seat fixedly mounted on the upper end surface of the first bracket, and a filling hopper is also fixedly hoisted on the lower end surface of the first bracket, a connecting cylinder is fixedly connected to the top center of the filling hopper, a first feeding pipe is fixedly connected between the bottom of the sleeve seat and the top of the filling hopper, and the docking interfaces of both with the first feeding pipe are eccentrically distributed, a rotating cylinder is rotatably arranged at the center of the sleeve seat, and a connecting disk is fixedly mounted on the outer surface of the rotating cylinder, and a plurality of straight and equidistantly distributed A distribution hopper, a second feeding pipe is fixedly connected between the upper end surface of the sleeve seat and the bottom of the main hopper, the upper and lower ports of the distribution hopper are respectively connected with the lower port of the second feeding pipe and the lower port of the first feeding pipe, a discharge hole is provided at the bottom of the injection hopper, the inner diameters of the connecting cylinder, the rotating cylinder and the discharge hole are consistent, the interior of the main hopper is filled with external plasticizer, or other injection plasticizer, the inner diameter of the lower port of the distribution hopper is consistent with the inner diameter of the upper port of the first feeding pipe, and the inner diameter of the lower port of the second feeding pipe is consistent with the inner diameter of the upper port of the distribution hopper.

[0009] Preferably, the low-level discharge unit includes a column slidably inserted into the connecting cylinder, the rotating cylinder and the discharge hole, the outer surface of the column is provided with a discharge slot, the lower end of the column is provided with a hollow cavity, and the hollow cavity is located below the discharge slot, the connection port between the discharge slot and the hollow cavity is provided with a chamfered portion, the outside of the column is also provided with a driving component, the driving component is used to drive the rotating cylinder to rotate, the interior of the second bracket is also fixedly provided with a telescopic member, the output end of the telescopic member faces downward, and the output end of the telescopic member is fixedly assembled with the column, and the chamfered portion makes the upper edge of the hollow cavity inclined to avoid accumulation of external plasticizer particles.

[0010] Preferably, the telescopic member is an electric push rod or a cylinder push rod, and the control switch of the electric push rod or the cylinder push rod is located on the ground just below the rubber mixer frame. The staff can touch the control switch with their feet without manual operation.

[0011] Preferably, the driving component includes a worm rotatably mounted on the upper end of the sleeve seat, and the outer surface of the worm is fixedly mounted with a movable ratchet, the outer surface of the column is provided with a plurality of ratchet grooves distributed in a straight line and equidistantly, the worm and the column are vertically distributed, the upper end surface of the sleeve seat is also rotatably mounted with a rotating shaft, the top of the rotating shaft is fixedly mounted with a worm wheel movably engaged with the worm, the upper end of the rotating cylinder is rotatably extended out of the sleeve seat, and the upper end outer surface of the rotating cylinder and the outer surface of the rotating shaft are fixedly mounted with gears, and a synchronous toothed belt is installed between the two gears. When the column moves downward, the movable ratchet can rotate with the worm through the engagement of the ratchet groove with the movable ratchet.

[0012] Preferably, the angle at which the driving component drives the rotating drum to rotate is a, the central angle between two adjacent distribution hoppers located on the connecting plate is b, and a=b, that is, a and b are the angles at which the rotating drum is driven to rotate each time the column moves downward.

[0013] Preferably, an auxiliary discharge unit is also provided inside the column, and the auxiliary discharge unit includes an annular groove opened inside the hollow cavity, and the annular groove is located below the chamfered portion; a receiving groove is also opened inside the column, and the receiving groove is located above the discharge groove; a straight plate is slidably inserted inside the receiving groove, a second spring is fixedly provided between the top of the straight plate and the receiving groove, the straight plate is slidably embedded in the inner wall of the annular groove, and a plurality of protrusions equidistantly distributed in a straight line are fixedly provided on one end face of the straight plate close to the axis of the column; a trigger component for moving the straight plate is also provided at the bottom of the filling hopper, and the plurality of protrusions equidistantly distributed in a straight line can comb the granular external plasticizer.

[0014] Preferably, the touch component includes a block elastically rotatably assembled at the bottom of the straight plate by a pin and a torsion spring, a straight groove is provided on the outer wall of the column, and the straight groove is connected to the hollow cavity, the block and the straight groove are slidably assembled, a chuck is placed directly below the injection hopper, and a first spring is fixedly arranged between the injection hopper and the chuck, the chuck and the column are coaxially distributed, a vertical stop bar is fixedly arranged inside the injection hopper, the stop bar limits the block, and a light touch piece is also arranged on the outside of the chuck, and the chuck limits the elastically extended block.

[0015] Preferably, the light touch member includes a cam rotatably assembled at the bottom of the first bracket, the outer wall fixing frame of the chuck is provided with a connecting frame, a positioning shaft is axially slidably inserted inside the connecting frame, and the positioning shaft is fixed to the bottom of the first bracket, the outer surface of the cam is slidably fitted with the upper end surface of the connecting frame, and when the cam rotates, it can press the chuck through the connecting frame to stretch the first spring.

[0016] Preferably, the elastic stiffness of the first spring is greater than the elastic stiffness of the second spring, that is, the elastic force generated by compression of the second spring cannot cause the first spring to deform.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention enables a worker to trigger the operation of a low-position discharge unit and a portion discharge unit by foot, so that the portion discharge unit can be lowered to approach the distance to the rubber material being kneaded, and when the external plasticizer falls, it will not be scattered to the outside of the rubber material being kneaded due to excessive height, that is, the rated amount of external plasticizer cannot be fully added into the inside of the rubber material being kneaded, thereby improving the accuracy of adding the external plasticizer, and through foot triggering, the hands of the worker can be freed, so that the hands of the worker can always pull the rubber material being kneaded, and the rubber material is prevented from falling from between the two rubber pressing cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the sleeve seat of the present invention;

[0022] Figure 4 This is a schematic diagram of the discharge notch structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal structure of the column of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 It is a schematic diagram of the connecting frame and cam structure of the present invention.

[0026] In the figure: 1, rubber mixing machine frame; 2, receiving plate; 3, rubber pressing cylinder; 4, first bracket; 5, second bracket; 6, sleeve seat; 7, main hopper; 8, telescopic member; 9, connecting cylinder; 10, injection hopper; 11, first feeding pipe; 12, connecting plate; 13, dividing hopper; 14, rotating cylinder; 15, column; 16, second feeding pipe; 17, movable ratchet; 18, worm; 19, rotating shaft; 20, worm wheel; 21, gear; 22, synchronous toothed belt; 23, discharge notch; 24, chuck; 25, first spring; 26, chamfered part; 27, annular groove; 28, straight plate; 29, protrusion; 30, accommodating groove; 31, second spring; 32, block; 33, straight groove; 34, connecting frame; 35, positioning shaft; 36, cam; 37, gear bar. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figure 1-Figure 4 The plasticizer quantitative feeding device in the production process of plastic products shown in the figure comprises: a rubber mixing machine frame 1 and two rubber pressing cylinders 3 rotatably assembled inside the rubber mixing machine frame 1, the two rubber pressing cylinders 3 rotate synchronously in opposite directions, and the two rubber pressing cylinders 3 are placed in parallel horizontally, a receiving tray 2 is placed below the rubber pressing cylinder 3, and the receiving tray 2 is fixedly assembled with the rubber mixing machine frame 1, a first bracket 4 and a second bracket 5 are fixedly assembled on the top of the rubber mixing machine frame 1, the second bracket 5 is mounted on the top of the first bracket 4, and a main hopper 7 is fixedly arranged inside the second bracket 5;

[0029] It also includes: a batch unloading unit, which is used to unload the materials in the main hopper 7 in batches and in a quantitative manner, and the batch unloading unit is located inside the first bracket 4;

[0030] The low-position discharging unit is used to shorten the distance between the discharging port of the component discharging unit and the kneaded rubber material. The low-position discharging unit is located between the second bracket 5 and the component discharging unit.

[0031] The component unloading unit includes a sleeve seat 6 fixedly mounted on the upper end surface of the first bracket 4, and a hopper 10 is also fixedly hoisted on the lower end surface of the first bracket 4, a connecting tube 9 is fixedly connected to the top center of the hopper 10, a first feeding pipe 11 is fixedly connected between the bottom of the sleeve seat 6 and the top of the hopper 10, and the docking interfaces of both with the first feeding pipe 11 are eccentrically distributed, a rotating drum 14 is rotatably arranged at the center of the sleeve seat 6, and a connecting disk 12 is fixedly mounted on the outer surface of the rotating drum 14, and a plurality of hoppers equidistantly distributed in a straight line are fixedly arranged inside the connecting disk 12 13, a second feeding pipe 16 is fixedly connected between the upper end surface of the sleeve seat 6 and the bottom of the main hopper 7, the upper and lower ports of the sub-hopper 13 are respectively connected to the lower port of the second feeding pipe 16 and the lower port of the first feeding pipe 11, a discharge hole is provided at the bottom of the injection hopper 10, the inner diameters of the connecting cylinder 9, the rotating cylinder 14 and the discharge hole are consistent, the interior of the main hopper 7 is filled with an external plasticizer, or other injection molding agents, the inner diameter of the lower port of the sub-hopper 13 is consistent with the inner diameter of the upper port of the first feeding pipe 11, and the inner diameter of the lower port of the second feeding pipe 16 is consistent with the inner diameter of the upper port of the sub-hopper 13.

[0032] The low-level discharge unit includes a column 15 slidably inserted into the connecting cylinder 9, the rotating cylinder 14 and the discharge hole. A discharge slot 23 is provided on the outer surface of the column 15. A hollow cavity is provided at the lower end of the column 15, and the hollow cavity is located below the discharge slot 23. A chamfered portion 26 is provided at the connecting port between the discharge slot 23 and the hollow cavity. A driving component is also provided on the outside of the column 15, and the driving component is used to drive the rotating cylinder 14 to rotate. A telescopic member 8 is also fixedly mounted inside the second bracket 5, and the output end of the telescopic member 8 faces downward, and the output end of the telescopic member 8 is fixedly assembled with the column 15. The chamfered portion 26 makes the upper edge of the hollow cavity inclined to avoid accumulation of external plasticizer particles.

[0033] The telescopic member 8 is an electric push rod or a cylinder push rod. The control switch of the electric push rod or the cylinder push rod is located on the ground just below the rubber mixing machine frame 1. The staff can touch the control switch with their feet without manual operation.

[0034] The driving component includes a worm 18 rotatably mounted on the upper end of the sleeve seat 6, and a movable ratchet 17 is fixedly mounted on the outer surface of the worm 18. A plurality of ratchet grooves equidistantly distributed in a straight line are opened on the outer surface of the column 15. The worm 18 and the column 15 are vertically distributed. A rotating shaft 19 is also rotatably mounted on the upper end surface of the sleeve seat 6. A worm wheel 20 movably engaged with the worm 18 is fixedly mounted on the top of the rotating shaft 19. The upper end of the rotating drum 14 rotates and extends out of the sleeve seat 6, and a gear 21 is fixedly mounted on the outer surface of the upper end of the rotating drum 14 and the outer surface of the rotating shaft 19. A synchronous toothed belt 22 is installed between the two gears 21. When the column 15 moves downward, the movable ratchet 17 can rotate with the worm 18 through the engagement of the ratchet groove with the movable ratchet 17.

[0035] The angle at which the driving component drives the drum 14 to rotate is a, the central angle between two adjacent distribution hoppers 13 located on the connecting plate 12 is b, and a=b, that is, a and b are the angles at which the drum 14 is driven to rotate each time the column 15 moves downward.

[0036] Working principle: In this solution, the control switch for controlling the operation of the telescopic member 8 is placed on the ground, which allows the staff to control it by foot, so there is no need for the staff to manually add the external plasticizer. When the column 15 moves downward, the movable ratchet 17 can cause the worm 18 to rotate. At the same time, through the cooperation of the worm wheel 20 and the worm 18, as well as the cooperation of the gear 21 and the synchronous toothed belt 22, the rotating drum 14 can deflect a certain angle with the connecting plate 12, so that the distribution hopper 13 filled with a certain amount of external plasticizer is moved to dock with the upper port of the first feeding pipe 11, so that the external plasticizer can be added. The agent enters the interior of the injection hopper 10 through the first feeding pipe 11, and when the column 15 moves downward, the discharge slot 23 can be located at the position of the discharge hole, that is, the external plasticizer accumulated in the injection hopper 10 can be discharged downward through the discharge slot 23 and the hollow cavity. Since the column 15 moves downward, the distance between the lower end of the hollow cavity and the kneaded rubber material can be shortened. The smaller the distance between the two, the smaller the probability of the external plasticizer scattering when it falls, and the smaller the rebound force generated when it touches the kneaded rubber material, which can further ensure the accuracy of each addition of the external plasticizer.

[0037] In this solution, the inner diameter of the hollow cavity is narrow, and the external plasticizer accumulated inside the injection hopper 10 will not fall down quickly, which has a certain limiting effect on the addition rate of the external plasticizer, thereby avoiding the rapid fall of a large amount of external plasticizer and causing random spillage.

[0038] Example 2: Please refer to Figure 5-Figure 7 This embodiment is a further explanation of the first embodiment. An auxiliary discharge unit is further provided inside the column 15. The auxiliary discharge unit includes an annular groove 27 provided inside the hollow cavity, and the annular groove 27 is located below the chamfered portion 26. A receiving groove 30 is further provided inside the column 15, and the receiving groove 30 is located above the discharge notch 23. A straight plate 28 is slidably inserted inside the receiving groove 30. A second spring 31 is fixedly provided between the top of the straight plate 28 and the receiving groove 30. The straight plate 28 is slidably embedded in the inner wall of the annular groove 27, and a plurality of convex blocks 29 equidistantly distributed in a straight line are fixedly provided on one end surface of the straight plate 28 close to the axis of the column 15. A touch component that moves the straight plate 28 is also provided at the bottom of the injection hopper 10. The plurality of convex blocks 29 equidistantly distributed in a straight line can play a combing role for the granular external plasticizer.

[0039] The touch component includes a block 32 elastically rotatably assembled at the bottom of the straight plate 28 by a latch and a torsion spring. A straight groove 33 is provided on the outer wall of the column 15, and the straight groove 33 is connected to the hollow cavity. The block 32 and the straight groove 33 are slidably assembled. A chuck 24 is placed directly below the injection hopper 10, and a first spring 25 is fixedly arranged between the injection hopper 10 and the chuck 24. The chuck 24 and the column 15 are coaxially distributed. A vertical stop bar 37 is fixedly arranged inside the injection hopper 10, and the stop bar 37 limits the block 32. A light touch piece is also arranged on the outside of the chuck 24, and the chuck 24 limits the elastically extended block 32.

[0040] The light touch member includes a cam 36 rotatably assembled at the bottom of the first bracket 4, a connecting frame 34 is fixed on the outer wall of the chuck 24, a positioning shaft 35 is axially slidably inserted inside the connecting frame 34, and the positioning shaft 35 is fixed to the bottom of the first bracket 4, the outer surface of the cam 36 is slidably fitted with the upper end surface of the connecting frame 34, and when the cam 36 rotates, it can press the chuck 24 through the connecting frame 34 to stretch the first spring 25.

[0041] The elastic stiffness of the first spring 25 is greater than that of the second spring 31 , that is, the elastic force generated by the compression of the second spring 31 cannot cause the first spring 25 to deform.

[0042] In this embodiment: considering that the inner diameter of the hollow cavity is narrow, the external plasticizer may be stuck and unable to be discharged normally at the joint between the discharge slot 23 and the discharge hole. Therefore, in this solution, when the column 15 is moving downward, the internal stop bar 37 of the injection hopper 10 can limit the block 32 from rotating and extending out of the straight slot 33. Therefore, when the column 15 moves downward with the straight plate 28 and allows the bottom of the straight plate 28 to extend out of the connecting tube 9, the block 32 will no longer be restricted and can be elastically rotated ninety degrees through the straight slot 33 to unfold. When the column 15 continues to move downward, the block 32 will abut against the chuck 24. Due to the limiting effect of the first spring 25, the straight plate 28 cannot continue to move downward, and the second spring 31 will begin to press After the column 15 is fully extended, when the external plasticizer is discharged through the hollow cavity, the cam 36 in the rotating state can frequently press the chuck 24 through the connecting frame 34. At this time, the second spring 31 can also elastically push the straight plate 28 to move synchronously with the chuck 24, so that the straight plate 28 can move back and forth between the hollow cavity and the discharge slot 23 with a plurality of protrusions 29. The protrusions 29 can play a role in moving the external plasticizer, avoiding the situation that the external plasticizer is stuck and cannot be discharged, and the spacing between adjacent protrusions 29 can just accommodate one to two external plasticizers, that is, it can ensure that the external plasticizer is discharged normally, and it can also ensure that the rate of external plasticizer discharge will not suddenly increase;

[0043] In this embodiment, the inner diameter of the annular groove 27 is larger than the inner diameter of the hollow cavity, so as to prevent the external plasticizer from being stuck between two adjacent protrusions 29 and the inner wall of the hollow cavity, and also to ensure the normal downward discharge of the external plasticizer.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plasticizer quantitative feeding device in the production process of plastic products, characterized in that: include: A rubber mixing machine frame (1) and two rubber pressing cylinders (3) rotatably mounted inside the rubber mixing machine frame (1), the two rubber pressing cylinders (3) rotate synchronously in opposite directions, and the two rubber pressing cylinders (3) are placed in parallel horizontally, a material receiving tray (2) is placed below the rubber pressing cylinder (3), and the material receiving tray (2) and the rubber mixing machine frame (1) are fixedly mounted, a first bracket (4) and a second bracket (5) are fixedly mounted on the top of the rubber mixing machine frame (1), the second bracket (5) is mounted on the top of the first bracket (4), and a main hopper (7) is fixedly arranged inside the second bracket (5); Also includes: A batch unloading unit, used to unload materials in batches and in a quantitative manner in the main hopper (7), the batch unloading unit being located inside the first bracket (4); A low-position discharge unit, used to shorten the distance between the discharge port of the component discharge unit and the kneaded rubber material, the low-position discharge unit being located between the second bracket (5) and the component discharge unit; The component unloading unit comprises a sleeve seat (6) fixedly mounted on the upper end surface of the first bracket (4), and a hopper (10) is also fixedly mounted on the lower end surface of the first bracket (4), a connecting cylinder (9) is fixedly connected to the center of the top of the hopper (10), a first feeding pipe (11) is fixedly connected between the bottom of the sleeve seat (6) and the top of the hopper (10), and the docking interfaces of the two with the first feeding pipe (11) are eccentrically distributed, and a rotating cylinder (11) is rotatably arranged at the center of the sleeve seat (6). 4), and a connecting plate (12) is fixedly sleeved on the outer surface of the rotating drum (14), and a plurality of distribution hoppers (13) are fixedly arranged inside the connection plate (12) and are distributed in a straight line at equal intervals, a second feeding pipe (16) is fixedly arranged between the upper end surface of the sleeve seat (6) and the bottom of the main hopper (7), and the upper and lower ports of the distribution hopper (13) are respectively connected to the lower port of the second feeding pipe (16) and the lower port of the first feeding pipe (11), and a discharge hole is opened at the bottom of the injection hopper (10); The low-position discharge unit comprises a column (15) slidably inserted into the connecting cylinder (9), the rotating cylinder (14) and the discharge hole, the outer surface of the column (15) is provided with a discharge slot (23), the lower end of the column (15) is provided with a hollow cavity, and the hollow cavity is located below the discharge slot (23), and the connection port between the discharge slot (23) and the hollow cavity is provided with a chamfered portion (26), and the outside of the column (15) is also provided with a driving component, and the driving component is used to drive the rotating cylinder (14) to rotate; The driving component comprises a worm (18) rotatably mounted on the upper end of the sleeve seat (6), and a movable ratchet (17) is fixedly mounted on the outer surface of the worm (18), a plurality of ratchet grooves equidistantly distributed in a straight line are formed on the outer surface of the column (15), the worm (18) and the column (15) are vertically distributed, the upper end surface of the sleeve seat (6) is also rotatably mounted with a rotating shaft (19), the top of the rotating shaft (19) is fixedly mounted with a worm wheel (20) movably meshing with the worm (18), the upper end of the rotating cylinder (14) is rotatably extended out of the sleeve seat (6), and a gear (21) is fixedly mounted on the outer surface of the upper end of the rotating cylinder (14) and the outer surface of the rotating shaft (19), and a synchronous toothed belt (22) is installed between the two gears (21) for transmission.

2. The plasticizer quantitative feeding device in the production process of plastic products according to claim 1, characterized in that: The inner diameters of the connecting cylinder (9), the rotating cylinder (14) and the discharge hole are consistent. A telescopic member (8) is fixedly mounted inside the second bracket (5). The output end of the telescopic member (8) faces downward, and the output end of the telescopic member (8) is fixedly assembled with the column (15). The telescopic member (8) is an electric push rod or a cylinder push rod.

3. The plasticizer quantitative feeding device in the production process of plastic products according to claim 1, characterized in that: The driving component drives the rotating drum (14) to rotate at an angle a, the center angle between two adjacent distribution hoppers (13) located on the connecting plate (12) is b, and a=b.

4. The plasticizer quantitative feeding device in the production process of plastic products according to claim 1, characterized in that: The column (15) is also provided with an auxiliary discharge unit, the auxiliary discharge unit comprising an annular groove (27) provided inside the hollow cavity, and the annular groove (27) is located below the chamfered portion (26). The column (15) is also provided with a receiving groove (30), and the receiving groove (30) is located above the discharge notch (23). A straight plate (28) is slidably inserted inside the receiving groove (30), a second spring (31) is fixedly provided between the top of the straight plate (28) and the receiving groove (30), the straight plate (28) is slidably embedded in the inner wall of the annular groove (27), and a plurality of convex blocks (29) distributed in a straight line and at equal intervals are fixedly provided on one end surface of the straight plate (28) close to the axis of the column (15), and a trigger component for moving the straight plate (28) is also provided at the bottom of the injection hopper (10).

5. The plasticizer quantitative feeding device in the production process of plastic products according to claim 4, characterized in that: The touch component comprises a block (32) which is elastically rotatably assembled at the bottom of the straight plate (28) through a latch and a torsion spring. A straight groove (33) is provided on the outer wall of the column (15), and the straight groove (33) is communicated with the hollow cavity. The block (32) and the straight groove (33) are slidably assembled. A chuck (24) is placed directly below the injection hopper (10), and a first spring (25) is fixedly arranged between the injection hopper (10) and the chuck (24). The chuck (24) and the column (15) are coaxially distributed. A vertical stop bar (37) is fixedly arranged inside the injection hopper (10), and the stop bar (37) has a limiting effect on the block (32). A light touch piece is also arranged outside the chuck (24).

6. The plasticizer quantitative feeding device in the production process of plastic products according to claim 5, characterized in that: The light touch member comprises a cam (36) rotatably mounted on the bottom of the first bracket (4); a connecting frame (34) is fixedly mounted on the outer wall of the chuck (24); a positioning shaft (35) is axially slidably inserted inside the connecting frame (34); the positioning shaft (35) is fixed to the bottom of the first bracket (4); and the outer surface of the cam (36) is slidably fitted with the upper end surface of the connecting frame (34).

7. The plasticizer quantitative feeding device in the production process of plastic products according to claim 5, characterized in that: The elastic stiffness of the first spring (25) is greater than the elastic stiffness of the second spring (31).

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