A hanging clock plastic profile extrusion coloring device and process

Abstract

The application relates to the field of plastic extrusion molding, in particular to a hanging clock plastic profile extrusion molding coloring device and process, which comprises a bottom plate, four telescopic columns distributed in a rectangular shape are arranged at the upper end of the bottom plate, support columns are arranged at the upper end of the telescopic columns, strip plates are arranged at the upper end of the support columns, upper and lower symmetrical semicylinders are arranged between the front and rear strip plates, the lower semicylinder is in sliding connection with the strip plate, a feeding groove is arranged at the top of the upper semicylinder, a discharging groove is arranged at the right end of the upper and lower semicylinders, a pressing unit is arranged on the support column, plastic particles and color master batches can be stored through the storage unit, the feeding amount of the materials can be adjusted through the adjusting assembly, further, the materials can be accurately adjusted through the indicating assembly, the plastic particles and the color master batches can be discharged into the upper and lower corresponding semicylinders through the set feeding amount, and the trouble of manual feeding is eliminated.

Description

Technical Field

[0001] This invention relates to the field of plastic extrusion molding, and in particular to a coloring device and process for extrusion molding of plastic profiles for wall clocks. Background Technology

[0002] Plastic profile extrusion molding and coloring equipment refers to equipment used for extrusion molding to produce plastic wall clock shells or similar products. This equipment includes components such as a plastic extruder, extrusion die, pigment addition system, and coloring device. In the production process of wall clocks, the shell usually needs to be produced by the above-mentioned equipment. The existing production technology is as follows: different plastic granules are manually proportioned, and then the proportioned plastic granules are added to the extruder. After the plastic granules are heated and pressure-extruded by the extruder, they are placed in an external coloring device for coloring to achieve the coloring effect of the wall clock shell.

[0003] Existing technologies struggle to precisely control material proportions, requiring manual assistance. Furthermore, after the plastic is extruded from the extruder, it still needs external equipment for compression molding before coloring. Coloring is typically done manually by spraying gaseous pigments onto the plastic shell, which can be harmful to workers if protective measures are inadequate. Moreover, existing equipment is difficult to clean internally after prolonged use, leading to a high failure rate. Therefore, the various processes in existing technologies are relatively dispersed, with a low degree of automation, leaving room for improvement.

[0004] With the advancement of technology, technicians in related fields have also optimized the extrusion molding equipment for plastic granules. In order to make a more accurate comparison, Chinese patent with publication number CN113733391A discloses a batch extrusion molding equipment for plastic granules.

[0005] It includes a support, a drive mechanism, an extrusion mechanism, and a cutting mechanism. The drive mechanism and the extrusion mechanism are both mounted on the support, and the cutting mechanism is mounted on the extrusion mechanism. The extrusion mechanism includes a housing, an extrusion component, and a positioning component. The cutting mechanism includes a rotating component, a cutting component, and a connecting component. This plastic granule batch extrusion molding device drives the extrusion mechanism and the cutting mechanism to operate intermittently through the drive mechanism, realizing the automatic molding of plastic granules. The device realizes the operation of the extrusion mechanism and the cutting mechanism through a single output end. It adopts linkage to realize online cutting, and the linkage adopts a purely mechanical structure, which improves the stability and service life of the device. The extrusion mechanism uses an anti-jamming unit to prevent the moving rod from jamming, which improves the stability of the device. The cutting mechanism allows for the removal and installation of the blades through simple push and pull.

[0006] However, the following problems still exist when using the above-mentioned existing technology to extrude plastic granules: 1. Although the above-mentioned device can reduce the use of drive devices through the cooperation of mechanical structures, the mechanical mechanism is prone to wear and tear during long-term use. This is not only unfavorable for large-scale production, but also requires frequent manual maintenance, resulting in low production efficiency.

[0007] The aforementioned device lacks a material storage system, thus requiring manual feeding. In other words, when producing materials that require mixing and proportioning, the materials still need to be manually proportioned, making the process rather cumbersome.

[0008] Although the cutting mechanism of the aforementioned device can be quickly replaced, the internal structure of the extrusion mechanism will also wear out or become clogged with material after long-term use. It requires manual disassembly with specialized equipment to maintain its internal structure, which further increases the difficulty of maintenance and greatly reduces its production efficiency. Moreover, the aforementioned device still requires disassembly of the cutting mechanism with specialized equipment. Therefore, the theory that the aforementioned device can be quickly repaired is not feasible.

[0009] Therefore, based on the above-stated viewpoints, there is still room for optimization in the existing technology for extruding plastic granules. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides a coloring device for extruding and molding plastic profiles for wall clocks. The device includes a base plate with four rectangularly distributed telescopic columns at its upper end. Support columns are positioned above the telescopic columns, and strip plates are commonly positioned above the support columns. Symmetrically arranged semi-cylinders are positioned between corresponding front and rear strip plates, with the lower semi-cylinder slidingly connected to the strip plate. A feed groove is provided at the top of the upper semi-cylinder, and a discharge groove is commonly provided at the right ends of both the upper and lower semi-cylinders. A clamping unit is provided on the support columns to close the upper and lower semi-cylinders.

[0011] The clamping unit includes sliding rings that are slidably disposed on the outside of the support column. A rectangular plate corresponding to the bottom of the lower semi-cylinder is disposed between the sliding rings. Several limiting posts with their tops abutting against the lower end of the corresponding semi-cylinder are disposed at the upper end of the rectangular plate.

[0012] Preferably, the clamping unit further includes a clamping spring disposed on the outside of the limiting post and slidably connected thereto, and the lower end of the clamping spring is connected to the rectangular plate, the upper end of the clamping spring is tightly attached to the lower end of the corresponding semi-circular frame, the outer sides of the support post and the corresponding sliding ring are provided with through limiting circular grooves, and the front and rear corresponding sliding rings and the limiting circular grooves on the support post are slidably inserted with limiting shafts.

[0013] Preferably, the upper and lower corresponding semi-cylinders are provided with heating units for extruding and heating plastic granules. The heating unit includes a rotating shaft that slides through the inner wall of the left side of the two upper and lower corresponding semi-cylinders. The inner wall diameter of the upper and lower corresponding semi-cylinders extends from large to small at the right end. The right end of the rotating shaft is provided with a conical block corresponding to the inner wall of the semi-cylinder. The outer side of the rotating shaft is provided with a spiral blade.

[0014] Preferably, the outer side of the rotating shaft and the inner wall of the semi-cylinder are provided with corresponding spiral grooves, and the rotating shaft is separated by spiral blades, with spiral heating plates installed in the spiral grooves.

[0015] Preferably, the right end of the semi-cylinder is provided with an injection molding unit for injection molding. The injection molding unit includes a threaded circular groove opened at the right end of the upper and lower semi-cylinders. A threaded ring is threadedly connected in the threaded circular groove. The right end of the threaded ring is provided with an injection mold that communicates with the discharge groove. The left end of the injection mold is provided with a sealing ring that is tightly attached to the outside of the semi-cylinder.

[0016] Preferably, an L-shaped plate is provided at the right end of the strip plate, a limit frame is provided at the upper end of the L-shaped plate, a sliding plate is slidably provided between the front and rear corresponding limit frames, and a number of spring rods are provided at one end of the sliding plate, evenly distributed along its extension section. The extension and retraction ends of the spring rods are provided with a fixed mold corresponding to the injection mold.

[0017] Preferably, the outer side of the fixed mold is provided with connecting pipes that are symmetrically distributed vertically and communicate with its interior.

[0018] In addition, the present invention also provides a coloring process for extrusion molding of plastic profiles for wall clocks, comprising the following steps: S1, Device preparation: The rectangular plate drives the limiting column to press the lower semi-cylinder against the lower end of the upper semi-cylinder, so that the upper and lower semi-cylinders form a whole.

[0019] S2, Heating and Mixing: The material enters the upper and lower corresponding semi-cylinders through the feed chute, and then the heating unit mixes and stirs the material. During the mixing and stirring process, the material is heated simultaneously to melt it. After the material has melted, the heating unit discharges the material from the discharge chute to the outside of the semi-cylinder.

[0020] S3, Extrusion Molding: The material discharged from the discharge chute enters the injection molding unit, which injects the material into the clock shell. Then, the injection molding unit discharges the clock shell, completing the injection molding process.

[0021] S4, Post-Injection Cleaning: After the injection molding is completed, the lower semi-cylinder is indirectly driven to no longer be in contact with the upper semi-cylinder through the rectangular plate. Then, the inner wall of the separated semi-cylinder and the heating unit are maintained and cleaned manually.

[0022] In summary, this application includes at least one of the following beneficial technical effects: I. This invention can store plastic granules and masterbatch through a storage unit, and can adjust the material feed rate through an adjustment component. Furthermore, it can ensure precise adjustment through an indicator component, so that the plastic granules and masterbatch can be discharged into the corresponding upper and lower semi-cylinders according to the set feed rate, eliminating the trouble of manual feeding.

[0023] Second, this invention can heat the plastic granules and masterbatch in two layers through the heating unit, so that the plastic granules and masterbatch can be fully melted. Then, the heating unit can push the melted plastic granules and masterbatch into the injection molding unit, and the injection molding unit can inject the melted plastic granules and masterbatch into the watch case. This device integrates automatic feeding, granule melting and automatic extrusion into one, which greatly improves the production efficiency of watch cases.

[0024] Third, the present invention can separate the two corresponding semi-cylinders by means of the clamping unit, so that after long-term use, the staff can quickly maintain and clean the inside of the device, avoid malfunctions, and greatly improve the applicability of the present invention. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the pressing unit and heating unit of the present invention.

[0028] Figure 3 This is a schematic diagram of the injection molding unit of the present invention.

[0029] Figure 4 This is a schematic diagram of another part of the injection molding unit of the present invention.

[0030] Figure 5 This is a schematic diagram of the structure of the storage unit of the present invention.

[0031] Figure 6 This is a schematic diagram of the structure of the adjustment component of the present invention.

[0032] Figure 7 This is a schematic diagram of the structure of the indicator component of the present invention.

[0033] Figure 8 This is a schematic diagram of the structure of the driving component of the present invention.

[0034] Figure 9 This is the present invention. Figure 8Enlarged view of part of the structure at point A in the middle.

[0035] Figure 10 This is the present invention. Figure 8 Enlarged view of part of the structure at point B.

[0036] In the diagram, 1. Base plate; 10. Telescopic column; 11. Support column; 12. Strip plate; 13. Semi-cylinder; 14. Feed chute; 15. Discharge chute; 2. Clamping unit; 20. Sliding ring; 21. Rectangular plate; 22. Limiting column; 23. Clamping spring; 24. Hydraulic cylinder; 25. Limiting circular groove; 26. Limiting shaft; 3. Heating unit; 30. Rotating shaft; 31. Conical block; 32. Spiral blade; 33. Spiral heating plate; 4. Injection molding unit; 40. Threaded circular groove; 41. Threaded ring; 42. Injection mold; 43. Sealing ring; 44. L-shaped plate; 45. Limiting frame; 46. Sliding plate; 47. Spring rod; 48. Fixed mold; 49. Connecting pipe; 5. Material storage unit; 50. Tapered tube; 51. Storage frame; 52. Divider plate; 53. Storage compartment; 54. Circular groove; 55. Sealing plate; 56. Handle; 6. Adjustment assembly; 60. Rectangular groove; 61. Support plate; 62. Rotating screw; 63. Sealing cone block; 64. Circular inclined block; 65. Limiting groove; 66. Limiting plate; 67. Sealing ring; 7. Indicating assembly; 70. Circular disc; 71. Scale groove; 72. Indicating plate; 8. Drive assembly; 80. Sliding frame; 81. Limiting ring; 82. Drive motor; 83. Actuating ring; 84. Two-way cylinder; 85. Bending plate; 86. C-shaped plate; 87. Reversing shaft; 88. Reversing gear; 89. Driven rack; 810. Drive rack. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The embodiments of the present invention will be described in detail, but the present invention may be implemented in many different ways as defined and covered by the claims.

[0038] This application discloses a device and process for coloring extruded plastic profiles for wall clocks. The device and process are mainly used in the process of processing and coloring plastic granules. Technically, they can mix the plastic granules and masterbatch using a spiral blade agitator, and heat the plastic granules and masterbatch during the agitation process to ensure complete mixing. Specifically, before feeding, the plastic granules and masterbatch can be separated by a separator, and the plastic granules and masterbatch can be automatically fed according to a pre-set feeding amount.

[0039] Example 1: Refer to Figure 1 and Figure 2As shown, it includes a base plate 1, telescopic columns 10, support columns 11, strip plates 12, semi-cylinder 13, feed chute 14, discharge chute 15, and a clamping unit 2. The upper end of the base plate 1 is provided with four telescopic columns 10 arranged in a rectangular pattern. The upper end of the telescopic columns 10 is provided with support columns 11. The upper end of the support columns 11 is provided with strip plates 12. The telescopic columns 10 can support the strip plates 12 through the support columns 11.

[0040] Symmetrically arranged semi-cylinders 13 are provided between the front and rear corresponding strip plates 12. The lower semi-cylinder 13 is slidably connected to the strip plate 12. The top of the upper semi-cylinder 13 is provided with a feeding groove 14. The right ends of the upper and lower corresponding semi-cylinders 13 are provided with a discharge groove 15. Plastic granules and color masterbatch can enter between the upper and lower corresponding semi-cylinders 13 through the feeding groove 14. Plastic granules and color masterbatch can also be discharged to the outside of the semi-cylinder 13 through the discharge groove 15. The upper semi-cylinder 13 is fixed between the front and rear corresponding strip plates 12. The lower semi-cylinder 13 can slide up and down between the front and rear corresponding strip plates 12 to cooperate with the upper semi-cylinder 13 to form a whole.

[0041] The support column 11 is provided with a clamping unit 2 for closing the upper and lower semi-cylinders 13. The clamping unit 2 can clamp the lower semi-cylinder 13 against the upper semi-cylinder 13 and close them together. The clamping unit 2 can also drive the lower semi-cylinder 13 to separate from the upper semi-cylinder 13.

[0042] Continue to refer to Figure 2 As shown, the clamping unit 2 is used to close the upper and lower semi-cylinders 13. Specifically, the clamping unit 2 includes a sliding ring 20, a rectangular plate 21, a limiting post 22, a clamping spring 23, a hydraulic cylinder 24, a limiting circular groove 25, and a limiting shaft 26. The sliding ring 20 is slidably disposed on the outside of the support post 11. A rectangular plate 21 corresponding to the bottom of the lower semi-cylinder 13 is disposed between the sliding rings 20. The rectangular plate 21 can slide up and down under the limitation of the support post 11 and the corresponding telescopic post 10 through the sliding ring 20.

[0043] The upper end of the rectangular plate 21 is provided with several limiting posts 22, the tops of which are tightly attached to the lower ends of the corresponding semi-cylinders 13. A retaining spring 23 is slidably connected to the outer side of each limiting post 22, with the lower end of the retaining spring 23 connected to the rectangular plate 21 and the upper end of the retaining spring 23 tightly attached to the lower end of the corresponding semi-cylinder 13. A hydraulic cylinder 24 is provided inside the base plate 1, and the telescopic end of the hydraulic cylinder 24 is connected to the lower end of the rectangular plate 21. The hydraulic cylinder 24 can apply pressure to the rectangular plate 21. The rectangular plate 21 is moved so that the lower semi-cylinder 13 can be pushed to cooperate with the upper semi-cylinder 13. The clamping spring 23 can further apply pressure to the lower semi-cylinder 13, so that the lower semi-cylinder 13 is tightly attached to the upper semi-cylinder 13. When cleaning is required between the semi-cylinders 13, the lower semi-cylinder 13 is indirectly driven to move downward through the hydraulic cylinder 24, and then separated from the upper semi-cylinder 13.

[0044] The support column 11 and the corresponding sliding ring 20 are both provided with through-hole limiting grooves 25, and the corresponding sliding rings 20 and the limiting grooves 25 on the support column 11 are slidably inserted with limiting shafts 26. After cleaning, the lower half-cylinder 13 is pressed against the lower end of the upper half-cylinder 13 by the hydraulic cylinder 24. Then the limiting shaft 26 is inserted into the corresponding limiting groove 25, and the rectangular plate 21 is fixed by the sliding rings 20 to ensure that the upper and lower corresponding half-cylinders 13 will not separate during the operation of this device.

[0045] Continue to refer to Figure 2 As shown, a heating unit 3 for extruding and heating plastic granules and masterbatch is provided inside the symmetrical upper and lower semi-cylinders 13. Specifically, the heating unit 3 includes a rotating shaft 30, a conical block 31, a spiral blade 32, and a spiral heating plate 33. The rotating shaft 30 slides through the inner left wall of the two corresponding upper and lower semi-cylinders 13. The inner wall diameter of the right end of the corresponding upper and lower semi-cylinders 13 extends from large to small. The right end of the rotating shaft 30 is provided with a conical block 31 corresponding to the inner wall of the semi-cylinder 13. The outer side of the rotating shaft 30 is provided with a spiral blade 32. The rotating shaft 30 can drive the conical block 31 and the spiral blade 32 to move left and right between the upper and lower semi-cylinders 13. The rotating shaft 30 can also drive the conical block 31 and the spiral blade 32 to rotate. During the rotation, the spiral blade 32 can mix the plastic granules and masterbatch together and push the plastic granules and masterbatch towards the conical block 31.

[0046] The outer side of the rotating shaft 30 and the inner wall of the semi-cylinder 13 are both provided with corresponding spiral grooves (not shown in the figure), and the rotating shaft 30 is separated by spiral blades 32. Spiral heating plates 33 are installed in the spiral grooves. The spiral heating plates 33 on the inner wall of the semi-cylinder 13 and the outer side of the rotating shaft 30 can heat both plastic particles and color masterbatch when they are mixed, so that the plastic particles and color masterbatch melt and fuse together. The upper and lower spiral blades 32 can heat the plastic particles and color masterbatch more fully, so that they melt more thoroughly. When the spiral blades 32 rotate, they can move the melt toward the conical block 31, so that the melt moves along the inner wall of the semi-cylinder 13 and the outer wall of the conical block 31 to the right end of the conical block 31.

[0047] It should be noted that the "melt" mentioned in the above embodiments is an abbreviation for the melting and mixing of plastic particles and color masterbatch. The role of "color masterbatch" is to color the melted plastic particles, and it is a well-known technology, so it will not be described in detail in this embodiment.

[0048] Reference Figure 3 and Figure 4 As shown, the right end of the symmetrical semi-cylinder 13 is provided with an injection molding unit 4 for injection molding. Specifically, the injection molding unit 4 includes a threaded groove 40, a threaded ring 41, an injection mold 42, a sealing ring 43, an L-shaped plate 44, a limiting frame 45, a sliding plate 46, a spring rod 47, a fixed mold 48, and a connecting pipe 49. The right end of the semi-cylinder 13 is provided with a threaded groove 40, and a threaded ring 41 is threadedly connected inside the threaded groove 40. The right end of the threaded ring 41 is provided with an injection mold 42 that communicates with the discharge channel 15. After the spiral blades 32 push the melt to the right end of the conical block 31, the rotating shaft 30 then... The moving spiral blade 32 and the conical block 31 move toward the discharge trough 15. At this time, the conical block 31 can push the melt at its right end to be discharged outside the discharge trough 15. The injection mold 42 can be installed in the threaded circular groove 40 through the threaded ring 41, corresponding to the discharge trough 15. At this time, the melt discharged from the discharge trough 15 can enter the injection mold 42. The left end of the injection mold 42 is provided with a sealing ring 43 that is close to the outside of the semi-cylinder 13. The sealing ring 43 is used to seal the distance between the injection mold 42 and the semi-cylinder 13 to prevent the melt from overflowing from the gap when it is discharged from the discharge port into the injection mold 42.

[0049] An L-shaped plate 44 is provided at the right end of the strip plate 12. A limiting frame 45 is provided at the upper end of the L-shaped plate 44. A sliding plate 46 is slidably provided between the front and rear corresponding limiting frames 45. Several spring rods 47 are provided at one end of the sliding plate 46 and are evenly distributed along its extension. The sliding plate 46 can drive the corresponding spring rods 47 to move left and right under the limitation of the limiting frame 45. The telescopic ends of the spring rods 47 are provided with a fixed mold 48 corresponding to the injection mold 42. When the spring rods 47 move, they can drive the fixed mold 48 to move towards the injection mold 42, so that the fixed mold 48 and the injection mold 42 fit together. The melt can enter between the injection mold 42 and the fixed mold 48. The injection mold 42 and the fixed mold 48 will cooperate to squeeze the melt into the shape of a clock shell.

[0050] The fixed mold 48 is provided with connecting pipes 49 that are symmetrically distributed on the outside and communicate with the inside. The connecting pipes 49 are used to connect to external cooling equipment. The external cooling equipment can discharge cooling water or other liquids into the fixed mold 48 to cool the fixed mold 48, so that the fixed mold 48 can quickly cool the melt between the injection mold 42 and the fixed mold 48, so that the melt can quickly cool and solidify to form the clock shell. Then the fixed mold 48 is indirectly driven by the sliding plate 46 to separate from the injection mold 42, and the formed clock shell will automatically fall off.

[0051] The function of the "external cooling equipment" mentioned in the above implementation process is to cool down the fixed mold 48, and it is a well-known technology, so it will not be described in detail in this embodiment.

[0052] Example 2: Refer to Figure 5 As shown, based on Embodiment 1, in order to store plastic granules and masterbatch, a storage unit 5 is provided at the upper end of the feed trough 14. Specifically, the storage unit 5 includes a conical tube 50, a storage frame 51, a partition plate 52, a storage compartment 53, a circular trough 54, a sealing plate 55, and a handle 56. The conical tube 50 is located at the upper end of the semi-cylinder 13 and is connected to the feed trough 14. A storage frame 51 is provided at the upper end of the conical tube 50, and the opening of the storage frame 51 faces upward. A cross-shaped partition plate 52 is provided inside the storage frame 51, and the partition plate 52 divides the internal space of the storage frame 51 into four storage compartments 53, so that plastic granules and masterbatch of different colors can be poured into different storage compartments 53 separately.

[0053] The storage compartment 53 has a circular groove 54 at its lower end, and the storage compartment 53 is connected to the conical tube 50 through the circular groove 54. Plastic granules and masterbatch in different storage compartments 53 can enter the conical tube 50 through the corresponding circular groove 54, and enter the corresponding upper and lower semi-cylinders 13 through the feed chute 14. The upper end of the storage frame 51 is provided with four sealing plates 55 corresponding to the storage compartments 53 and sealing the upper end of the storage compartments 53 by means of hinges. The sealing plates 55 are provided with handles 56 at the upper end. The handles 56 can drive the corresponding sealing plates 55 to flip and seal the upper end of the adjacent storage compartments 53. The sealing plates 55 are used to prevent foreign objects from splashing into the storage compartments 53. When it is time to feed, the handles 56 can be used to drive the sealing plates 55 to stop sealing the upper end of the corresponding storage compartments 53.

[0054] Continue to refer to Figure 2 , Figure 5 and Figure 6 As shown, the storage compartment 53 is equipped with an adjustment component 6 for adjusting the discharge volume of the circular trough 54. Specifically, the adjustment component 6 includes a rectangular trough 60, a support plate 61, a rotating screw 62, a sealing cone block 63, a circular inclined block 64, a limiting groove 65, a limiting plate 66, and a sealing ring 67. The rectangular trough 60 is located in the middle of the four partition plates 52. The upper end of the partition plate 52 is provided with a support plate 61 located in the rectangular trough 60. The rectangular trough 60 is used to prevent the sealing plate 55 from interfering with the support plate 61 when sealing. The rectangular trough 60 also allows the support plate 61 to contact the upper end of the partition plate 52, so that the partition plate 52 can support the support plate 61.

[0055] The lower end of the support plate 61 is rotatably provided with four rotating screws 62 located in the corresponding storage compartments 53, and the lower end of the rotating screws 62 extends into the conical tube 50 through the circular groove 54. The rotating screws 62 can rotate in the storage compartments 53 and the conical tube 50 under the limitation of the support plate 61.

[0056] A sealing cone 63 is connected to the outside of the rotating screw 62 via a threaded connection. A vibration motor (not shown in the figure) is installed inside the sealing cone 63. A circular inclined block 64 is provided at the upper end of the sealing cone 63, which is slidably connected to the corresponding rotating screw 62. A limit groove 65 is opened on one side of the sealing cone 63 and the circular inclined block 64. Several limit plates 66 are provided on the outside of the partition plate 52, which are located in adjacent limit grooves 65. The limit plates 66 are slidably connected to the limit grooves 65. The limit plates 66 can longitudinally limit and guide the corresponding sealing cone 63 through the limit grooves 65. When the rotating screw 62 rotates, it can drive the sealing cone 63 to move up and down through the threaded connection.

[0057] The diameter of the upper end of the sealing cone 63 is the same as that of the circular groove 54, which means that the sealing cone 63 can block the circular groove 54. When the feed amount of plastic particles or masterbatch needs to be adjusted, the sealing cone 63 is moved upward by rotating the screw 62. Since the diameter of the sealing cone 63 gradually decreases from top to bottom, the gap between the circular groove 54 and the sealing cone 63 will become larger and larger as the sealing cone 63 moves upward. The plastic particles or masterbatch can then fall into the conical tube 50 through the gap. At this time, in order to prevent the plastic particles or masterbatch from blocking the gap, the plastic particles or masterbatch can be vibrated by a vibration motor to avoid blockage. The circular inclined block 64 is used to prevent the plastic particles and masterbatch from accumulating on the sealing cone 63 when they are poured into the storage grid 53.

[0058] A sealing ring 67 is also provided at the left end of the rotating shaft 30, which is in close contact with the inner wall of the semi-cylinder 13. When the rotating shaft 30 moves to the right, it can drive the sealing ring 67 to seal the lower end of the feed trough 14, so that plastic particles and masterbatch cannot enter the semi-cylinder 13 through the feed trough 14. This prevents plastic particles and masterbatch from falling down from the feed trough 14 and accumulating at the left end of the semi-cylinder 13, so that the rotating shaft 30 cannot move to the initial position. When the rotating shaft 30 drives the sealing ring 67 to move to the initial position, the sealing ring 67 will no longer seal the feed trough 14.

[0059] Example 3: Refer to Figure 7 As shown, based on Embodiments 1 and 2, in order to more accurately control the sealing size of the sealing cone 63 on the circular groove 54 and thus control the material feed, an indicator component 7 is provided on the upper end of the support plate 61. Specifically, the indicator component 7 includes a circular disc 70, a scale groove 71, and an indicator plate 72. Four circular discs 70 corresponding to the rotating screw 62 are provided on the upper end of the support plate 61. The support plate 61 has several scale grooves 71 evenly distributed around its axis. The upper end of the rotating screw 62 passes through the support plate. The support plate 61 and the circular disk 70 are equipped with an indicator plate 72 corresponding to the adjacent scale groove 71. When the height of the sealing cone 63 needs to be adjusted, the indicator plate 72 drives the corresponding rotating screw 62 to rotate, so that the rotating screw 62 can drive the corresponding sealing cone 63 to move up and down. At this time, the height of the corresponding sealing cone 63 can be accurately judged by the position between the indicator plate 72 and the scale groove 71, so as to avoid errors in the feeding amount of plastic particles and masterbatch, which would lead to the final quality control not meeting the standards.

[0060] Reference Figure 8 , Figure 9 and Figure 10As shown, in order to enable the rotating shaft 30 and the sliding plate 46 to slide in the left and right directions, a drive assembly 8 is provided on the strip plate 12. Specifically, the drive assembly 8 includes a sliding frame 80, a limiting ring 81, a drive motor 82, a toggle ring 83, a two-way cylinder 84, a bending plate 85, a chamfered plate 86, a reversing shaft 87, a reversing gear 88, a driven rack 89, and a drive rack 810. The sliding frame 80 is located at the right end of the strip plate 12, and the limiting ring 81 is slidably arranged between the front and rear corresponding sliding frames 80. The drive motor 82 is fixedly installed inside the limiting ring 81. The right end of the rotating shaft 30 passes through the outer wall of the two semi-circular frames and is connected to the output shaft of the drive motor 82. The limiting ring 81 can limit and guide the drive motor 82 through the front and rear corresponding sliding frames 80. That is, the drive motor 82 can slide in the left and right directions under the limitation of the sliding frame 80 by the limiting ring 81, and the drive motor 82 can drive the rotating shaft 30 to rotate.

[0061] A toggle ring 83 is provided on the outer side of the rotating shaft 30. The toggle ring 83 can drive the rotating shaft 30 to slide in the left and right directions, and the rotating shaft 30 can drive the corresponding drive motor 82 to move synchronously during the sliding process. A double-acting cylinder 84 is mounted on the upper end of the strip plate 12 on one side through a cylinder seat. A bending plate 85 is provided on the pushing end of one side of the double-acting cylinder 84. A chamfered plate 86 corresponding to the toggle ring 83 is provided on the end of the bending plate 85 away from the double-acting cylinder 84, and the opening of the chamfered plate 86 faces the toggle ring 83. The outer side of the toggle ring 83 and the chamfered plate are connected. The inner walls of 86 are tightly fitted together. The telescopic shafts on both sides of the bidirectional cylinder 84 move synchronously, that is, when one telescopic shaft extends, the other telescopic shaft shortens. The bidirectional cylinder 84 can drive the bending plate 85 to move in the left and right directions. When the bending plate 85 moves, it can drive the C-shaped plate 86 to move synchronously. During the movement, the C-shaped plate 86 can drive the rotating shaft 30 to move synchronously through the actuating ring 83. Since the output end of the drive motor 82 is connected to one side of the rotating shaft 30, the rotating shaft 30 can drive the drive motor 82 to move.

[0062] A reversing shaft 87 is provided at the upper end of the strip plate 12, and a reversing gear 88 is rotatably sleeved at the upper end of the reversing shaft 87. The reversing gear 88 can rotate under the limit of the reversing shaft 87. A driven rack 89 is provided on one side of the sliding plate 46 through the corresponding limiting frame 45, and the driven rack 89 meshes with the reversing gear 88. A driving rack 810 is provided on the other side of the bidirectional cylinder 84, which meshes with the other side of the reversing gear 88. The bidirectional cylinder 84 can drive the driving rack 810 to move in the left and right directions. When the driving rack 810 moves, it can drive the reversing gear 88 to rotate. The rotation of the reversing gear 88 can drive the driven rack 89 to move. The movement of the driven rack 89 can indirectly drive the fixed mold 48 to move in the left and right directions.

[0063] In the specific implementation process, after the heating unit 3 pushes the melt to the right end of the conical block 31, the rotating shaft 30 is indirectly driven to move through the bidirectional cylinder 84. The rotating shaft 30 drives the conical block 31 to push the melt into the injection mold 42. At the same time, the fixed mold 48 is also indirectly driven by the bidirectional cylinder 84 to stick tightly to the injection mold 42. Due to the spring rod 47, even if the fixed mold 48 is completely pressed against the injection mold 42, the bidirectional cylinder 84 can still continue to push the rotating shaft 30 to continue to move, and the spring rod 47 will retract. After the injection molding is completed, the rotating shaft 30 and the fixed mold 48 are indirectly driven by the bidirectional cylinder 84 to return to the initial position. At this time, the clock shell that has been injected on the fixed mold 48 will fall off.

[0064] In addition, the present invention also provides a coloring process for extrusion molding of plastic profiles for wall clocks, comprising the following steps: S1, Device preparation: The rectangular plate 21 drives the limiting column 22 to press the lower half cylinder 13 against the lower end of the upper half cylinder 13, so that the upper and lower half cylinders 13 form a whole.

[0065] S2, heating and mixing: The material enters the upper and lower corresponding semi-cylinders 13 through the feed chute 14, and then the heating unit 3 mixes and stirs the material. During the mixing and stirring process, the material is heated simultaneously to melt the material. After the material is melted, the heating unit 3 discharges the material from the discharge chute 15 to the outside of the semi-cylinder 13.

[0066] S3, Extrusion molding: The material discharged from the discharge trough 15 enters the injection molding unit 4, the injection molding unit 4 injects the material into the clock shell, and then the clock shell is discharged from the injection molding unit 4, completing the injection molding.

[0067] S4, Subsequent Cleaning: After the injection molding is completed, the lower semi-cylinder 13 is indirectly driven to no longer be in contact with the upper semi-cylinder 13 through the rectangular plate 21. Then, the inner wall of the separated semi-cylinder 13 and the heating unit 3 are maintained and cleaned manually.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0069] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for coloring extruded plastic profiles for wall clocks, comprising a base plate (1), characterized in that: The base plate (1) is provided with four telescopic columns (10) arranged in a rectangular shape at the upper end. The telescopic columns (10) are provided with support columns (11) at the upper end. The support columns (11) are provided with strip plates (12) at the upper end. The corresponding strip plates (12) are provided with symmetrically arranged semi-cylinders (13) at the top and bottom. The lower semi-cylinder (13) is slidably connected to the strip plate (12). The upper semi-cylinder (13) is provided with a feed groove (14) at the top. The upper and lower corresponding semi-cylinders (13) are provided with a discharge groove (15) at the right end. The support column (11) is provided with a clamping unit (2) for closing the upper and lower semi-cylinders (13). The clamping unit (2) includes a sliding ring (20) slidably disposed on the outside of the support column (11). A rectangular plate (21) corresponding to the bottom of the lower semi-cylinder (13) is disposed between the sliding rings (20). Several limiting posts (22) with their tops pressed against the lower end of the corresponding semi-cylinder (13) are disposed on the upper end of the rectangular plate (21). Heating units (3) for extruding and heating plastic particles are provided inside the two upper and lower semi-cylinders (13). The heating unit (3) includes a rotating shaft (30) that slides through the inner wall of the left side of the two corresponding upper and lower semi-cylinders (13). The inner wall diameter of the upper and lower corresponding semi-cylinders (13) extends from large to small at the right end. A conical block (31) corresponding to the inner wall of the semi-cylinder (13) is provided at the right end of the rotating shaft (30). A spiral blade (32) is provided on the outside of the rotating shaft (30). The upper end of the feeding trough (14) is provided with a storage unit (5). The storage unit (5) includes a conical tube (50), a storage frame (51), a partition plate (52), a storage grid (53), a circular trough (54), a sealing plate (55), and a handle (56). The conical tube (50) is located at the upper end of the semi-cylinder (13) and is connected to the feeding trough (14). The upper end of the conical tube (50) is provided with a storage frame (51), and the opening of the storage frame (51) faces upward. The storage frame (51) is provided with a cross-shaped partition plate (52) inside, and the partition plate (52) divides the internal space of the storage frame (51) into four storage grids (53). Plastic granules and color masterbatches of different colors can be poured into different storage grids (53) separately. The storage compartment (53) has a circular groove (54) at its lower end, and the storage compartment (53) is connected to the conical tube (50) through the circular groove (54); the storage frame (51) has four sealing plates (55) at its upper end that correspond to the storage compartment (53) and seal the upper end of the storage compartment (53) by means of hinges; the sealing plates (55) have handles (56) at their upper ends. The storage compartment (53) is provided with an adjustment component (6) for adjusting the discharge amount of the circular trough (54). The adjustment component (6) includes a rectangular trough (60), a support plate (61), a rotating screw (62), a sealing cone (63), a circular inclined block (64), a limiting groove (65), a limiting plate (66), and a sealing ring (67). The rectangular trough (60) is opened in the middle of the four partition plates (52). The upper end of the partition plate (52) is provided with a support plate (61) located in the rectangular trough (60). The lower end of the support plate (61) is rotatably equipped with four rotating screws (62) located in the corresponding storage compartments (53), and the lower end of the rotating screws (62) extends into the conical tube (50) through the circular groove (54); A sealing cone (63) is connected to the outside of the rotating screw (62) by a threaded connection. A vibration motor is installed inside the sealing cone (63). A circular inclined block (64) is provided at the upper end of the sealing cone (63) and is slidably connected to the corresponding rotating screw (62). A limit groove (65) is opened on one side of the sealing cone (63) and the circular inclined block (64). Several limit plates (66) located in adjacent limit grooves (65) are provided on the outside of the partition plate (52), and the limit plates (66) are slidably connected to the limit grooves (65). The left end of the rotating shaft (30) is also provided with a sealing ring (67) that is in close contact with the inner wall of the semi-cylinder (13).

2. The device for coloring extruded plastic profiles for wall clocks according to claim 1, characterized in that: The clamping unit (2) further includes a clamping spring (23) disposed outside the limiting post (22) and slidably connected thereto. The lower end of the clamping spring (23) is connected to the rectangular plate (21), and the upper end of the clamping spring (23) is tightly attached to the lower end of the corresponding semi-circular frame. The outer sides of the support post (11) and the corresponding sliding ring (20) are provided with interconnecting limiting grooves (25), and the corresponding sliding rings (20) and the limiting grooves (25) on the support post (11) are slidably inserted with limiting shafts (26).

3. The extrusion molding and coloring device for wall clock plastic profiles according to claim 1, characterized in that: The outer side of the rotating shaft (30) and the inner wall of the semi-cylinder (13) are provided with corresponding spiral grooves, and the rotating shaft (30) is separated by spiral blades (32), and spiral heating plates (33) are installed in the spiral grooves.

4. The extrusion molding and coloring device for wall clock plastic profiles according to claim 1, characterized in that: The upper and lower semi-cylinders (13) are provided with injection molding units (4) for injection molding at their right ends. The injection molding unit (4) includes a threaded groove (40) opened at the right end of the upper and lower corresponding semi-cylinders (13). A threaded ring (41) is threadedly connected in the threaded groove (40). An injection mold (42) connected to the discharge groove (15) is provided at the right end of the threaded ring (41). A sealing ring (43) is provided at the left end of the injection mold (42) and is attached to the outside of the semi-cylinder (13).

5. The extrusion molding and coloring device for wall clock plastic profiles according to claim 4, characterized in that: The right end of the strip plate (12) is provided with an L-shaped plate (44), the upper end of the L-shaped plate (44) is provided with a limit frame (45), and a sliding plate (46) is slidably provided between the front and rear corresponding limit frames (45). One end of the sliding plate (46) is provided with several spring rods (47) evenly distributed along its extension section, and the telescopic ends of the spring rods (47) are provided with a fixed mold (48) corresponding to the injection mold (42).

6. The extrusion molding and coloring device for wall clock plastic profiles according to claim 5, characterized in that: The fixed mold (48) is provided with connecting pipes (49) that are symmetrically distributed vertically and communicate with its interior.

7. A coloring process for extrusion molding of plastic profiles for wall clocks, comprising the coloring apparatus for extrusion molding of plastic profiles for wall clocks as described in any one of claims 1-6, characterized in that, The extrusion molding coloring process includes the following steps: S1, Device preparation: The rectangular plate (21) drives the limiting column (22) to press the lower half cylinder (13) against the lower end of the upper half cylinder (13), so that the upper and lower half cylinders (13) form a whole. S2, heating and mixing: The material enters the upper and lower corresponding semi-cylinders (13) through the feed trough (14), and then the heating unit (3) mixes and stirs the material. During the mixing and stirring process, the material is heated simultaneously to melt the material. After the material is melted, the heating unit (3) discharges the material from the discharge trough (15) to the outside of the semi-cylinder (13). S3, Extrusion molding: The material discharged from the discharge trough (15) enters the injection molding unit (4), the injection molding unit (4) injects the material into the wall clock shell, and then the injection molding unit (4) discharges the wall clock shell to complete the injection molding; S4, Subsequent cleaning: After the injection molding is completed, the lower half cylinder (13) is indirectly driven by the rectangular plate (21) to no longer stick to the upper half cylinder (13). Then, the inner wall of the separated half cylinder (13) and the heating unit (3) are maintained and cleaned manually.

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