Injection molding machine with mold cavity cleaning structure

Abstract

The utility model discloses an injection molding machine with a mold cavity cleaning structure, which comprises a mold locking assembly, an ejection assembly and a screw charging barrel assembly, an upper mold plate with a thin structure is arranged in the mold locking assembly, and the mold cavity cleaning structure for cleaning the screw charging barrel assembly is arranged on the upper mold plate. According to the injection molding machine with the mold cavity cleaning structure, a reinforcing structure is additionally arranged, so that the original strength of the upper mold plate is ensured, and meanwhile, different types of screw charging barrel assemblies can be effectively withdrawn from the mold plate surface. The die cavity cleaning structure and the telescopic die cavity cleaning sealing piece are additionally arranged on the upper die plate, so that the avoiding space of the screw charging barrel assembly is increased, a channel between the upper die plate and the upper die of the die can be sealed, and even if the screw charging barrel assembly cannot completely retreat from the surface of the die plate, the die cavity can be cleaned. And excess materials in the screw charging barrel assembly can be conveniently and timely cleaned and maintained, so that the product quality and the production efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine with a mold cavity cleaning structure. Background Art

[0002] The upper template in the injection molding machine is an important part of the clamping assembly. The injection assembly is installed on the upper template, and the upper mold of the mold is installed on the upper template. The screw barrel assembly allows the nozzle of the screw barrel assembly to be supported (acting on the gate of the upper mold of the mold) through the seat cylinder of the injection assembly, and can also exit the template.

[0003] In existing injection molding machines, due to the small size and short length of the small injection screw, the nozzle is often unable to withdraw from the upper template plane after the injection is completed, which will result in the residual material in the screw barrel assembly cannot be cleaned automatically and can only be cleaned manually. Manual cleaning will take a long time, which can neither guarantee the quality of the injection molded products nor help improve production efficiency.

[0004] Therefore, it is urgent to design an injection molding machine that can timely and effectively realize automatic cleaning of residual materials, ensure the quality of injection molded products, save time, and improve production efficiency. In addition, the injection molding machine can meet the injection molding needs of different screw and barrel components, and can realize automatic cleaning and maintenance regardless of whether the nozzle exits the upper template plane. Utility Model Content

[0005] The utility model aims to solve the problems that the template structure on the existing injection molding machine cannot meet the injection exit requirements of screw and barrel assemblies of different structures, resulting in the inability to automatically clean the residual material of the screw and barrel assemblies, the time-consuming manual cleaning, the inability to guarantee the quality of the injection molded products, and the low production efficiency, and to provide an injection molding machine with a mold cavity cleaning structure that can timely and effectively realize automatic cleaning of residual material, can guarantee the quality of the injection molded products and save time, improve production efficiency, can meet the injection molding needs of different screw and barrel assemblies, and can realize automatic cleaning and maintenance regardless of whether the nozzle exits the upper template plane.

[0006] The technical solution adopted by the utility model to achieve the purpose of the invention is: an injection molding machine with a mold cavity cleaning structure, including a clamping assembly, an injection assembly and a screw barrel assembly, wherein the clamping assembly is provided with an upper template of a thin structure, and the upper template is provided with a mold cavity cleaning structure for cleaning the screw barrel assembly. The injection molding machine with a mold cavity cleaning structure, by thinning the upper template in the clamping assembly, appropriately thins the template thickness so that different types of screw barrel assemblies can effectively exit the template surface, and at the same time, adds a mold cavity cleaning structure on the upper template, increases the avoidance space of the screw barrel assembly, so as to facilitate the cleaning of the residual material inside the screw barrel assembly. Due to the addition of the mold cavity cleaning structure, even if the screw barrel assembly cannot completely exit the template surface, it is possible to conveniently and timely clean and maintain the residual material inside the screw barrel assembly, which greatly improves the product quality and production efficiency.

[0007] Preferably, a shallow-mouthed upper template nozzle cavity is provided at one end of the upper template facing the lower plate surface at the center position of the upper template. The shallow-mouthed upper template nozzle cavity is provided at the center position of the upper template. Since the depth of the upper template nozzle cavity is shallow, it is convenient for the nozzle in the screw barrel assembly to pass through the upper template nozzle cavity and abut against the gate on the upper mold of the mold set on the lower plate surface of the upper template, thereby realizing the injection operation, and it is also convenient for the nozzle in the screw barrel assembly to effectively exit the upper template nozzle cavity after the injection is completed, thereby facilitating the cleaning and maintenance of the residual material inside the screw barrel assembly.

[0008] Preferably, the cavity cleaning structure is coaxially arranged with the cavity of the upper mold nozzle, and comprises an arc-shaped transition cavity, a cavity cleaning cavity and a square cleaning trough which are arranged in sequence from the cavity of the upper mold nozzle upward. The cavity cleaning structure is coaxially arranged with the cavity of the upper mold nozzle, and mainly adopts cavity designs of different levels, and realizes the increase of retreat space in sequence through the arc-shaped transition cavity, the cavity cleaning cavity and the square cleaning trough, so as to facilitate the timely cleaning of residual materials after different types of screw barrel components exit or cannot completely exit the mold surface.

[0009] Preferably, the diameters of the arc-shaped transition cavity, the mold cavity cleaning cavity and the square cleaning groove are increased in sequence. The diameters of the arc-shaped transition cavity, the mold cavity cleaning cavity and the square cleaning groove are increased in sequence, and the avoidance space is gradually increased to leave an automatic cleaning cavity to facilitate the automatic cleaning of the residual material inside the screw barrel, ensuring that no matter whether the screw barrel assembly completely exits the template surface of the upper template, it does not affect the automatic cleaning of the residual material inside the screw barrel.

[0010] Preferably, the mold cavity cleaning cavity is arranged in a columnar structure, a conical structure or an inclined surface structure. The mold cavity cleaning cavity can be arranged in different structures as long as it can facilitate cleaning.

[0011] Preferably, an inner cavity is provided inside the upper mold plate, and a telescopic mold cavity cleaning closure is provided inside the inner cavity. The telescopic mold cavity cleaning closure is provided inside the upper mold plate, and when it is necessary to clean the residual material of the screw barrel assembly, the upper part of the mold cavity of the upper mold plate material nozzle is closed by the telescopic mold cavity cleaning closure, thereby blocking the passage between the mold cavity of the upper mold plate material nozzle and the gate of the upper mold of the mold, and the residual material will not enter the upper mold of the mold during the cleaning process of the residual material inside the screw barrel assembly, which is convenient for cleaning the residual material and ensures the quality of the injection molded product. It can realize the cleaning of the residual material inside the screw barrel assembly, so as to quickly replace different rubber materials, and greatly improve the product quality and production efficiency, and will not cause the influence of different rubber materials on the injection molded product.

[0012] Preferably, the telescopic mold cavity cleaning sealing member is symmetrically arranged in two groups, and each group of the telescopic mold cavity cleaning sealing members includes a semicircular sealing piece and a telescopic rod for driving the semicircular sealing piece to extend and retract. The telescopic rod connected to the external driving device drives the semicircular sealing piece to extend and retract toward the mold cavity cleaning cavity, thereby closing the mold cavity cleaning cavity, thereby blocking the passage between the upper mold plate material nozzle mold cavity and the mold upper mold gate, and preventing the residual material of the screw barrel assembly from falling into the lower card mold upper mold during the cleaning process, thereby ensuring the quality of the injection molded product.

[0013] Preferably, the upper template has a template reinforcement structure protruding upwards on both side edges of the upper template. Providing the template reinforcement structure on the upper template can ensure the original strength of the upper template or increase the strength of the upper template while realizing a lightweight design of the upper template.

[0014] Preferably, an injection assembly reinforcement piece is protruding upwards on the upper plate surface of the upper mold plate. The provision of the injection assembly reinforcement piece facilitates the connection support strength between the injection assembly and the upper mold plate.

[0015] Preferably, the clamping assembly comprises a mold cylinder assembly, a machine column arranged on the mold cylinder assembly, a lower mold plate slidably arranged on the machine column, and the upper mold plate is arranged at the upper end of the machine column.

[0016] Preferably, the injection assembly is mounted on the upper mold plate, the screw barrel assembly is mounted on the injection assembly, and the nozzle in the screw barrel assembly is driven by the injection assembly to push against the mold to inject and retreat.

[0017] The beneficial effect of the utility model is that the injection molding machine with a cavity cleaning structure has a thinned design for the upper template and an added reinforcement structure, which can ensure the original strength of the upper template while enabling screw barrel assemblies of different models to effectively exit the template surface. Adding a cavity cleaning structure and a telescopic cavity cleaning closure to the upper template not only increases the avoidance space of the screw barrel assembly, but also can close the passage between the upper template and the upper mold of the mold, which is convenient for cleaning the residual material inside the screw barrel assembly and also ensures the quality of the injection molded product. Even if the screw barrel assembly cannot completely exit the template surface, it can also conveniently and timely clean and maintain the residual material inside the screw barrel assembly, greatly improving product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an injection molding machine with a mold cavity cleaning structure of the utility model;

[0019] FIG2 is a schematic structural diagram of an injection molding machine with a mold cavity cleaning structure according to the present invention from another angle;

[0020] FIG3 is a schematic diagram of the structure of the mold locking assembly in the present utility model;

[0021] FIG4 is a schematic diagram of the structure of the upper template of the utility model;

[0022] Figure 5 It is a cross-sectional view of the upper template in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the injection assembly in the utility model;

[0024] Figure 7 This is a structural schematic diagram of the injection assembly in the utility model from another angle;

[0025] Figure 8 It is a structural schematic diagram of the screw barrel assembly in the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the upper template in Example 2;

[0027] Fig.10 It is a structural schematic diagram of an upper template with the upper template nozzle cavity in a closed state;

[0028] Fig.11 is a cross-sectional view of the upper template in Example 2;

[0029] Fig.12 It is a structural schematic diagram of a telescopic mold cavity cleaning closure;

[0030] In the figure: 1, clamping assembly, 11, mold cylinder assembly;

[0031] 12. Upper template, 120. Inner cavity, 121. Template reinforcement structure, 122. Injection assembly reinforcement, 123. Cavity cleaning structure, 124. Upper template nozzle cavity, 125. Cavity cleaning cavity, 126. Square cleaning trough, 127. Arc transition cavity, 128. Arc slot, 129. Connecting hole;

[0032] 13. Machine column, 14. Slide plate, 15. Slide plate fixing plate, 16. Lower template;

[0033] 2. Injection components;

[0034] 3. Screw barrel assembly, 31. Screw barrel, 32. Screw, 33. Screw head, 34. Constant temperature nozzle, 35. Nozzle, 36. Check ring, 37. Check ring, 38. Ceramic heating ring, 39. Stainless steel heating ring;

[0035] 4. Frame assembly, 5. Electronic control assembly;

[0036] 6. Shooting cylinder assembly, 60. Shooting cylinder, 61. Shooting cylinder guide column, 62. Shooting cylinder front cover, 63. Shooting cylinder core shaft, 64. Shooting plate,

[0037] 7. Storage motor assembly, 71. Oil motor seat, 72. Cycloidal motor, 73. Transmission shaft, 74. Hopper assembly, 75. Hopper fixing seat, 76. Hopper;

[0038] 8. seat cylinder assembly, 80. seat cylinder, 81. seat cylinder machine column, 82. upper template;

[0039] 9. Telescopic mold cavity cleaning closure, 91. Semicircular sealing piece, 92. Telescopic rod. DETAILED DESCRIPTION

[0040] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0041] Embodiment 1:

[0042] exist Figure 1 , Figure 2 In the illustrated embodiment, an injection molding machine with a mold cavity cleaning structure includes a clamping assembly 1 for realizing mold opening and closing actions, an injection assembly 2, a screw barrel assembly 3, a frame assembly 4 and an electronic control assembly 5.

[0043] The clamping assembly 1 is mounted on the frame assembly 4 , the injection assembly 2 is mounted on the upper mold plate 12 of the clamping assembly 1 , the electric control assembly 5 is mounted on the side of the frame assembly 4 , and the screw barrel assembly 3 is mounted on the injection assembly 2 .

[0044] like Figure 3 As shown, the clamping assembly 1 includes a mold cylinder assembly 11, an upper mold plate 12, a machine column 13 and a lower mold plate 16.

[0045] The machine column 13 is arranged on the mold cylinder assembly 11, and the lower mold plate 16 is slidably arranged on the machine column 13 and connected to the mold cylinder assembly 11. The movement of the mold cylinder assembly 11 can drive the lower mold plate 16 to move up and down, thereby realizing the mold opening and closing operation.

[0046] A slide plate fixing plate 15 is arranged on the lower mold plate 16 , and a slide plate 14 for realizing mold installation and sliding is arranged on the slide plate fixing plate 15 .

[0047] The upper template 12 is arranged at the upper end of the machine column 13 .

[0048] like Figure 4 , Figure 5 As shown, a template reinforcement structure 121 is symmetrically arranged on the upper template 12 along the direction of the mold sliding in and out. The template reinforcement structure 121 is arranged at the edges of both sides of the upper plate surface of the upper template 12. The template reinforcement structure 121 is a U-shaped structure as a whole and is arranged integrally with the upper template 12. The template reinforcement structure 121 is convexly arranged on the edges of both sides of the upper template 12. The thickness of the upper template 12 is designed to be thinner, and a design structure thinner than the existing upper template thickness is adopted to facilitate the screw barrel assembly 3 to effectively exit the plate surface of the upper template 12. In order to ensure that the template still has strong strength when the thickness is thinned, and to meet the requirements of the upper template 12 to bear the upper mold of the mold and the injection assembly 2, an injection assembly reinforcement member 122 is arranged on the upper plate surface of the upper template 12. The injection assembly reinforcement member 122 is a plate-shaped structure convexly arranged on the upper template 12.

[0049] A mold cavity cleaning structure 123 for cleaning the screw barrel assembly is provided on the upper mold plate 12 .

[0050] The center position of the upper mold plate 12 is provided with an upper mold plate nozzle cavity 124 for the nozzle of the screw barrel assembly 3 to pass through and cooperate with the gate on the upper mold of the mold to realize casting. The depth of the upper mold plate nozzle cavity 124 is less than the length of the nozzle. A cavity cleaning cavity 125 is coaxially arranged above the upper mold plate nozzle cavity 124. The aperture of the cavity cleaning cavity 125 is larger than that of the upper mold plate nozzle cavity 124. The cavity cleaning cavity 125 is arranged in a columnar structure, a conical structure or an inclined surface structure. An arc-shaped transition cavity 127 is arranged between the upper mold plate nozzle cavity 124 and the cavity cleaning cavity 125. The arrangement of the arc-shaped transition cavity 127 enables the nozzle to form an expanded exit structure in the process of exiting the upper mold plate 12, thereby facilitating the cleaning and maintenance of the residual material inside the screw barrel assembly.

[0051] A square cleaning groove 126 is coaxially arranged with the mold cavity cleaning cavity 125 on the upper mold plate 12 above the mold cavity cleaning cavity 125 , and the groove wall of the square cleaning groove 126 is arranged in an inclined arc surface structure.

[0052] The diameters of the arc-shaped transition cavity 127, the mold cavity cleaning cavity 125 and the square cleaning groove 126 increase in sequence.

[0053] The mold cavity cleaning cavity 125 , the square cleaning groove 126 , and the arc-shaped transition cavity 127 form the mold cavity cleaning structure 123 on the upper mold plate 12 , which is used to cooperate with the cleaning mechanism to clean and maintain the residual material of the screw barrel assembly 3 .

[0054] like Figure 6 , Figure 7 As shown, the injection assembly 2 includes an injection cylinder assembly 6 for driving the screw-barrel assembly 3 to inject, a material storage motor assembly 7 for driving the screw-barrel assembly 3 to store material, and a seat cylinder assembly 8 for enabling the screw-barrel assembly 3 to support the mold and enable the screw-barrel assembly 3 to retreat.

[0055] The shooting cylinder assembly 6 includes a shooting cylinder 60 , a shooting cylinder guide column 61 , a shooting cylinder front cover 62 , a shooting cylinder core shaft 63 and a shooting plate 64 .

[0056] The storage motor assembly 7 includes an oil motor seat 71 , a cycloidal motor 72 , a transmission shaft 73 and a hopper assembly 74 .

[0057] The seat cylinder assembly 8 includes a seat cylinder 80 , a seat cylinder machine column 81 , and an upper template 82 .

[0058] The seat cylinder assembly 8 is fixedly connected to the injection assembly reinforcement 122 on the upper mold plate 12. The upper end of the seat cylinder assembly 8 is slidably connected to an upper mold plate 82 through a group of seat cylinder machine columns 81. A group of injection cylinder guide columns 61 are arranged on the upper mold plate 82. An oil motor seat 71 is slidably arranged on the injection cylinder guide columns 61. A cycloidal motor 72 is arranged on the oil motor seat 71. An injection plate 64 is also arranged on the oil motor seat 71. The injection cylinder 60 is fixed to the injection cylinder guide column 61 through the injection cylinder front cover 63, and the injection cylinder core shaft 64 is connected to the injection plate 65 and drives the injection plate 65 to move up and down.

[0059] The cycloid motor 72 is connected to a transmission shaft 73 rotatably disposed below the oil motor seat 71 .

[0060] The hopper assembly 74 includes a hopper seat 75 and a hopper 76 connected to the hopper seat.

[0061] The hopper seat 75 is arranged on the upper mold plate 82 and connected to the screw barrel assembly 3 .

[0062] The screw barrel assembly 3 is arranged on the upper mold plate 82 and drives the upper mold plate 82 through the seat cylinder assembly 8, thereby driving the screw barrel assembly 3 to move up and down, thereby achieving injection and retreat against the mold.

[0063] like Figure 8 As shown, the screw barrel assembly 3 includes a screw barrel 31, a screw 32 arranged inside the screw barrel 31, a screw head 33 arranged on the screw 32, a thermostatic nozzle 34 arranged on the screw head 33, a nozzle 35 arranged on the thermostatic nozzle 34, and a check ring 36 and a check ring 37 arranged between the screw head 33 and the screw 32. The screw 32 is an important component of the screw barrel assembly and has great significance in the entire injection molding material storage and injection. During use, the rear end of the screw 32 is connected to the transmission shaft 73, and is driven to rotate by the cycloidal motor 72 to store material, and is driven by the shooting cylinder 60 to realize the overall up and down movement to achieve injection.

[0064] The outside of the screw barrel 31 is provided with a plurality of ceramic heating rings 38 for achieving uniform heating of the screw barrel 31 , and a stainless steel heating ring 39 is provided near the nozzle 35 for achieving uniform heating of the barrel.

[0065] Embodiment 2:

[0066] In this embodiment, an injection molding machine with a mold cavity cleaning structure includes a clamping assembly 1 for realizing mold opening and closing actions, an injection assembly 2, a screw barrel assembly 3, a frame assembly 4 and an electronic control assembly 5.

[0067] The clamping assembly 1 is mounted on the frame assembly 4 , the injection assembly 2 is mounted on the upper mold plate of the clamping assembly 4 , the electric control assembly 5 is mounted on the side of the frame assembly 4 , and the screw barrel assembly 3 is mounted on the injection assembly 2 .

[0068] The clamping assembly 1 comprises a mold cylinder assembly 11 , an upper mold plate 12 , a machine column 13 and a lower mold plate 16 .

[0069] The machine column 13 is arranged on the mold cylinder assembly 11, and the lower mold plate 16 is slidably arranged on the machine column 13 and connected to the mold cylinder assembly 11. The movement of the mold cylinder assembly 11 can drive the lower mold plate 16 to move up and down, thereby realizing the mold opening and closing operation.

[0070] A slide plate fixing plate 15 is arranged on the lower mold plate 16 , and a slide plate 14 for realizing mold installation and sliding is arranged on the slide plate fixing plate 15 .

[0071] The upper template 12 is arranged at the upper end of the machine column 13 .

[0072] like Fig. 9 , Fig.10 As shown, a template reinforcement structure 121 is symmetrically arranged on the upper template 12 along the direction of the mold sliding in and out. The template reinforcement structure 121 is arranged at the edges of both sides of the upper plate surface of the upper template 12. The template reinforcement structure 121 is a U-shaped structure as a whole and is arranged integrally with the upper template 12. The template reinforcement structure 121 is convexly arranged on the edges of both sides of the upper template 12. The thickness of the upper template 12 is designed to be thinner, and a design structure thinner than the existing upper template thickness is adopted to facilitate the screw barrel assembly 3 to effectively exit the plate surface of the upper template 12. In order to ensure that the template still has strong strength when the thickness is thinned, and to meet the requirements of the upper template 12 to bear the upper mold of the mold and the injection assembly 2, an injection assembly reinforcement member 122 is arranged on the upper plate surface of the upper template 12. The injection assembly reinforcement member 122 is a plate-shaped structure convexly arranged on the upper template 12.

[0073] A cavity cleaning structure 123 is provided on the upper mold plate 12 for cleaning the screw barrel assembly.

[0074] The center position of the upper mold plate 12 is provided with an upper mold plate nozzle cavity 124 for the nozzle of the screw barrel assembly 3 to pass through and cooperate with the gate on the upper mold of the mold to realize casting. The depth of the upper mold plate nozzle cavity 124 is less than the length of the nozzle. A cavity cleaning cavity 125 is coaxially arranged above the upper mold plate nozzle cavity 124. The aperture of the cavity cleaning cavity 125 is larger than that of the upper mold plate nozzle cavity 124. The cavity cleaning cavity 125 is arranged in a columnar structure, a conical structure or an inclined surface structure. An arc-shaped transition cavity 127 is arranged between the upper mold plate nozzle cavity 124 and the cavity cleaning cavity 125. The arrangement of the arc-shaped transition cavity 127 enables the nozzle to form an expanded exit structure in the process of exiting the upper mold plate 12, thereby facilitating the cleaning and maintenance of the residual material inside the screw barrel assembly.

[0075] A square cleaning groove 126 is coaxially arranged with the mold cavity cleaning cavity 125 on the upper mold plate 12 above the mold cavity cleaning cavity 125 , and the groove wall of the square cleaning groove 126 is arranged in an inclined arc surface structure.

[0076] The diameters of the arc-shaped transition cavity 127, the mold cavity cleaning cavity 125 and the square cleaning groove 126 increase in sequence.

[0077] like Fig.11 , Fig.12As shown, the upper template 12 where the mold cavity cleaning cavity 125 is located is provided with an inner cavity 120 connected to the mold cavity cleaning cavity 125, and an arc-shaped groove 128 is provided at the connection between the inner cavity 120 and the bottom of the mold cavity cleaning cavity 125. Two connecting holes 129 are symmetrically provided on the side of the upper template 12. A telescopic mold cavity cleaning closure 9 is provided inside the inner cavity 120. The telescopic mold cavity cleaning closure 9 includes two semicircular sealing pieces 91 and two telescopic rods 92 that are circular after being connected. The semicircular sealing piece 91 The telescopic type is arranged inside the arc-shaped groove 128, one end of the telescopic rod is connected to the semicircular sealing piece 91, and the other end of the telescopic rod 92 extends out of the connecting hole 129 and is connected to the external driving device. The driving device drives the telescopic rod to realize that the semicircular sealing piece extends into and withdraws from the mold cavity cleaning cavity 125, thereby realizing the closure of the upper mold nozzle mold cavity 124, so as to facilitate the cleaning of the residual material when the screw barrel assembly 3 withdraws from the upper mold nozzle mold cavity 124 after the injection is completed, and can ensure that the residual material will not enter the lower mold.

[0078] The mold cavity cleaning cavity 125, the square cleaning groove 126 and the arc-shaped transition cavity 127 form the mold cavity cleaning structure 123 on the upper mold plate 12. The telescopic mold cavity cleaning closure 9 and the mold cavity cleaning structure 123 cooperate to clean and maintain the residual material of the screw barrel assembly 3. Such a structure can not only reduce the weight of the upper mold plate, but also can conveniently and timely clean the residual material, greatly saving time and improving production efficiency.

[0079] The injection assembly 2 includes an injection cylinder assembly 6 for driving the screw barrel assembly 3 to inject, a storage motor assembly 7 for driving the screw barrel assembly 3 to store materials, and a seat cylinder assembly 8 for enabling the screw barrel assembly 3 to support the mold and realize the screw barrel assembly 3 to retreat.

[0080] The shooting cylinder assembly 6 includes a shooting cylinder 60 , a shooting cylinder guide column 61 , a shooting cylinder front cover 62 , a shooting cylinder core shaft 63 and a shooting plate 64 .

[0081] The storage motor assembly 7 includes an oil motor seat 71 , a cycloidal motor 72 , a transmission shaft 73 and a hopper assembly 74 .

[0082] The seat cylinder assembly 8 includes a seat cylinder 80 , a seat cylinder machine column 81 , and an upper template 82 .

[0083] The seat cylinder assembly 8 is fixedly connected to the injection assembly reinforcement 122 on the upper mold plate 12. The upper end of the seat cylinder assembly 8 is slidably connected to an upper mold plate 82 through a group of seat cylinder machine columns 81. A group of injection cylinder guide columns 61 are arranged on the upper mold plate 82. An oil motor seat 71 is slidably arranged on the injection cylinder guide columns 61. A cycloidal motor 72 is arranged on the oil motor seat 71. An injection plate 64 is also arranged on the oil motor seat 71. The injection cylinder 60 is fixed to the injection cylinder guide column 61 through the injection cylinder front cover 63, and the injection cylinder core shaft 64 is connected to the injection plate 65 and drives the injection plate 65 to move up and down.

[0084] The cycloid motor 72 is connected to a transmission shaft 73 rotatably disposed below the oil motor seat 71 .

[0085] The hopper assembly 74 includes a hopper seat 75 and a hopper 76 connected to the hopper seat.

[0086] The hopper seat 75 is arranged on the upper mold plate 82 and connected to the screw barrel assembly 3 .

[0087] The screw barrel assembly 3 is arranged on the upper mold plate 82 and drives the upper mold plate 82 through the seat cylinder assembly 8, thereby driving the screw barrel assembly 3 to move up and down, thereby achieving injection and retreat against the mold.

[0088] The screw barrel assembly 3 comprises a screw barrel 31, a screw 32 arranged inside the screw barrel 31, a screw head 33 arranged on the screw 32, a thermostatic nozzle 34 arranged on the screw head 33, a nozzle 35 arranged on the thermostatic nozzle 34, and a check ring 36 and a check ring 37 arranged between the screw head 33 and the screw 32. The screw 32 is an important component of the screw barrel assembly and has great significance in the entire injection molding material storage and injection. During use, the rear end of the screw 32 is connected to the transmission shaft 73, and is driven to rotate by the cycloidal motor 72 to store material, and is driven by the shooting cylinder 60 to realize the overall up and down movement to realize injection.

[0089] The outside of the screw barrel 31 is provided with a plurality of ceramic heating rings 38 for achieving uniform heating of the screw barrel 31 , and a stainless steel heating ring 39 is provided near the nozzle 35 for achieving uniform heating of the barrel.

[0090] The injection molding machine with a mold cavity cleaning structure described in the above embodiment is designed to be thinned on the upper mold plate, and the mold reinforcement structure is set on the upper mold plate. The thickness of the upper mold plate is thinned, and the mold reinforcement structure is added on both sides to strengthen the strength of the original upper mold plate. The mold thickness can be appropriately thinned to facilitate the screw barrel assembly to exit the mold surface. The mold cavity cleaning structure and the telescopic mold cavity cleaning closure are added to fully increase the avoidance space, so that the screw barrel assembly can be cleaned in time. Even if the screw barrel assembly cannot completely exit the mold surface, it can be conveniently and timely cleaned and maintained. At the same time, during the cleaning process, the residual material will not enter the upper mold of the mold, ensuring the quality of the injection molded product, greatly improving the product quality and production efficiency.

[0091] The above embodiments are only some of the embodiments of the utility model, not all of them. At the same time, based on the embodiments described in the utility model, all other embodiments obtained by ordinary technicians in this field on the basis of the technical solution of this application without creative work should fall within the scope of protection of the utility model.

Claims

1. An injection molding machine with a mold cavity cleaning structure, comprising a mold clamping assembly (1), an injection assembly (2) and a screw barrel assembly (3), characterized in that: The clamping assembly (1) is provided with an upper mold plate (12) of a thin structure, and the upper mold plate (12) is provided with a mold cavity cleaning structure (123) for cleaning the screw barrel assembly; an upper mold plate nozzle mold cavity is provided at the center of the upper mold plate, a mold cavity cleaning cavity is coaxially provided above the upper mold plate nozzle mold cavity, an arc-shaped transition cavity is provided between the upper mold plate nozzle mold cavity and the mold cavity cleaning cavity, and a square cleaning trough is coaxially provided on the upper mold plate above the mold cavity cleaning cavity, and the mold cavity cleaning cavity, the square cleaning trough and the arc-shaped transition cavity form the mold cavity cleaning structure on the upper mold plate.

2. The injection molding machine with a mold cavity cleaning structure according to claim 1, characterized in that: An upper template material nozzle cavity (124) with a shallow opening structure is provided at one end of the upper template (12) at the center position facing the lower plate surface.

3. The injection molding machine with a mold cavity cleaning structure according to claim 2, characterized in that: The mold cavity cleaning structure (123) is arranged coaxially with the upper mold plate material nozzle mold cavity (124), and the mold cavity cleaning structure (123) comprises an arc-shaped transition cavity (127), a mold cavity cleaning cavity (125) and a square cleaning groove (126) which are arranged in sequence from the upper mold plate material nozzle mold cavity (124) upward.

4. The injection molding machine with a mold cavity cleaning structure according to claim 3, characterized in that: The diameters of the arc-shaped transition cavity (127), the mold cavity cleaning cavity (125) and the square cleaning groove (126) increase in sequence.

5. The injection molding machine with a mold cavity cleaning structure according to claim 3, characterized in that: The mold cavity cleaning cavity (125) is arranged in a columnar structure, a conical structure, or an inclined surface structure.

6. The injection molding machine with a mold cavity cleaning structure according to any one of claims 1 to 5, characterized in that: An inner cavity (120) is arranged inside the upper mold plate (12), and a telescopic mold cavity cleaning sealing member (9) is arranged inside the inner cavity (120).

7. The injection molding machine with a mold cavity cleaning structure according to claim 6, characterized in that: The telescopic mold cavity cleaning sealing members (9) are symmetrically arranged in two groups, and each group of the telescopic mold cavity cleaning sealing members (9) comprises a semicircular sealing piece (91) and a telescopic rod (92) for driving the semicircular sealing piece (91) to telescope.

8. The injection molding machine with a mold cavity cleaning structure according to any one of claims 1 to 5, characterized in that: A template reinforcement structure (121) is integrally provided on both side edges of the upper template (12) to protrude upwards; and an injection assembly reinforcement member (122) is provided on the upper plate surface of the upper template (12) to protrude upwards.

9. The injection molding machine with a mold cavity cleaning structure according to any one of claims 1 to 5, characterized in that: The clamping assembly (1) comprises a mold cylinder assembly (11), a machine column (13) arranged on the mold cylinder assembly (11), and a lower mold plate (16) slidably arranged on the machine column (13); the upper mold plate (12) is arranged at the upper end of the machine column (13).

10. The injection molding machine with a mold cavity cleaning structure according to claim 9, characterized in that: The injection assembly (2) is mounted on the upper mold plate (12), and the screw barrel assembly (3) is mounted on the injection assembly (2). The nozzle (35) in the screw barrel assembly (3) is driven by the injection assembly (2) to press against the mold for injection and retreat.

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