Special machine for thermosetting and graphite raw material products

Abstract

The utility model discloses a special machine for thermosetting and graphite raw material products, which comprises a mould locking component for mould opening and closing actions of the whole machine and an injection unit for material storage and injection, a screw rod charging barrel component is arranged on the injection unit and comprises a screw rod, a screw rod charging barrel and a material nozzle which are of an integrated structure, and the screw rod charging barrel and the material nozzle are arranged on the injection unit. The end part of the screw rod is integrally provided with a flow guide conical surface, and the screw rod is integrally provided with screw teeth which are externally coated with a meltallizing metal layer. The special machine for the thermosetting and graphite raw material products can meet the injection requirement of conveying harder raw materials, the fluidity of raw material injection molding is effectively improved, the injection molding is smoother, the product has no flash phenomenon, and the quality of the injection molded product is good. The wear resistance and hardness of the screw are effectively improved, and the service life of the sub-screw is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a special machine for thermosetting and graphite raw material products. Background Art

[0002] The characteristic of thermosetting plastics is that they can soften and flow when heated for the first time, and when heated to a certain temperature, they will produce a chemical reaction, cross-linking and solidification, and become hard. This change is irreversible. After that, when heated again, they can no longer soften and flow. It is precisely with the help of this characteristic that molding is carried out, using the plasticization flow during the first heating to fill the mold cavity under pressure, and then solidify into a product of a certain shape and size.

[0003] Plastics mainly used in harsh environments such as heat insulation, wear resistance, insulation, and high voltage resistance. Most of them are thermosetting plastics. Commonly used thermosetting plastics include phenolic resin, urea-formaldehyde resin, melamine resin, unsaturated polyester resin, epoxy resin, silicone resin, polyurethane, etc.

[0004] The main properties of graphite are high temperature resistance. The strength of graphite increases with the increase of temperature. At 2000℃, the strength of graphite doubles. Electrical conductivity and thermal conductivity. The electrical conductivity of graphite is one hundred times higher than that of general non-metallic minerals. The thermal conductivity exceeds that of metal materials such as steel, iron, and lead. The thermal conductivity decreases with the increase of temperature. Even at extremely high temperatures, graphite becomes an insulator. Lubricity depends on the size of graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricity. Chemical stability has good chemical stability at room temperature and can resist acid, alkali and organic solvent corrosion. Good plasticity and toughness, can be rolled into very thin sheets. Thermal shock resistance can withstand drastic changes in temperature without damage when used at room temperature, and temperature mutations.

[0005] Graphite products also have the characteristics of thermosetting plastics during the injection molding process.

[0006] In the prior art, ordinary plastic injection molding machines are generally used for injection molding of thermosetting and graphite raw material products. The screw has a short service life, poor corrosion resistance and wear resistance, a large cone angle at the front end of the screw, and poor fluidity, resulting in uneven raw material injection and easy flashing of the product. Utility Model Content

[0007] The purpose of the utility model is to solve the problems of the prior art injection molding machine screw, such as short service life, poor corrosion resistance and wear resistance, too large cone angle at the front end of the screw, poor fluidity, resulting in uneven injection molding of raw materials, and easy flash of products, and to provide a special machine for thermosetting and graphite raw material products with long service life, good corrosion resistance and wear resistance, good fluidity, smooth injection molding and good product quality.

[0008] The technical solution adopted by the utility model to achieve the purpose of the invention is: a special machine for thermosetting and graphite raw material products, including a clamping assembly for opening and closing the mold of the whole machine and an injection unit for storing and injecting materials, a screw-barrel assembly is arranged on the injection unit, and the screw-barrel assembly includes a screw, a screw barrel and a nozzle of an integrated structure, a guide cone is integrally arranged at the end of the screw, and a screw thread with an external melt-sprayed metal layer is integrally arranged on the screw. The special machine for thermosetting and graphite raw material products is designed in a new way for the screw barrel assembly in view of the characteristics of thermosetting and graphite raw material products, and the structure of the screw and screw head being designed separately and being used in conjunction with the check ring and the check ring is changed in the prior art. Instead, the screw is set in an integrated structure. The integrated screw structure has high strength, and a guide cone is designed in an integrated manner at the end of the screw. No screw head is set separately, and the taper of the guide cone can be controlled within a smaller range, which meets the feeding and injection needs of liquid raw materials, can effectively improve the fluidity of raw material injection molding, and achieves the design purpose of smooth injection molding and no flash phenomenon of the product, so that the quality of the injection molded product is better. At the same time, in view of the characteristics of high hardness and corrosiveness of thermosetting and graphite raw materials, the screw thread is provided with a metal layer of cladding spraying. The setting of the metal layer of cladding spraying can effectively improve the wear resistance of the screw, can transport harder raw materials, can greatly improve the hardness of the screw, and improve the service life of the screw, which can meet the needs of injection molding of thermosetting and graphite raw material products.

[0009] Preferably, the taper of the guide cone is 20 to 30 degrees, and a cone tip arc head is provided at the cone tip of the guide cone, and the arc radius of the cone tip arc head is 1 to 5 degrees. The taper of the guide cone is controlled at 20 to 30 degrees, which can solve the problems of large taper of the existing screw head, insufficient strength, poor fluidity of raw materials during injection, unsmooth injection molding, and easy flash of the product. At the same time, it can ensure the overall strength of the screw and effectively improve the service life of the screw. The setting of the cone tip arc head is more conducive to smooth injection molding.

[0010] Preferably, the thickness of the sprayed metal layer is 2 to 2.2 mm, and the hardness of the screw segment is HRC58-60. The thickness of the sprayed metal layer is preferably 2 to 2.2 mm, which can effectively reduce the cost while meeting the strength requirements. The setting of the sprayed metal layer can effectively improve the wear resistance of the screw and can transport harder raw materials. The hardness of the screw segment is HRC58-60, which can greatly improve the hardness of the screw and increase the service life of the screw, and can meet the needs of thermosetting and graphite raw material product injection molding.

[0011] Preferably, the rod body of the screw has a 1-5 degree inclined structure from the rear end to the flow guide cone surface, and a 120 degree flow guide surface is provided at the connection between the thread and the rod body of the screw. The rod body of the screw is provided with a conical structure to further increase the fluidity of the raw material and better meet the needs of injection molding of thermosetting and graphite raw material products.

[0012] Preferably, a barrel cavity is provided inside the screw barrel, and a barrel front section, a spiral liquid tank section and a barrel rear section are integrally provided on the outer circumference of the screw barrel. Due to the characteristics of thermosetting and graphite raw materials, they are in liquid state after the first heating and solidify after further heating. Therefore, in order to ensure the smooth transportation of the raw materials by the screw, a spiral liquid tank section is provided outside the screw barrel, and the heating and temperature control of the raw materials inside the screw barrel are realized through the spiral liquid tank section.

[0013] Preferably, a water ring is provided on the sealing sleeve outside the spiral liquid tank section of the screw barrel, and the inner wall of the water ring and the spiral liquid tank section form a temperature-controlled spiral cavity. In order to achieve heating and temperature control inside the screw barrel, a sealed water ring is provided outside the screw barrel, and the water ring and the spiral liquid tank section cooperate to form a temperature-controlled rotating cavity, which can effectively heat and control the temperature inside the screw barrel.

[0014] Preferably, a spiral guide groove is provided on the cavity wall of the barrel cavity where the spiral liquid groove section is located. The purpose of providing the spiral guide groove is to fully heat the raw material to make it uniformly liquid, and to increase the fluidity of the liquid raw material.

[0015] Preferably, the nozzle is provided with a conical cavity and an injection hole connected to the conical cavity in cooperation with the flow guide conical surface. The conical cavity is provided in the nozzle to cooperate with the flow guide conical surface on the screw to achieve good fluidity of the liquid raw material and smooth injection molding.

[0016] Preferably, the clamping assembly is provided with an upper mold plate, a screw barrel assembly active cavity is provided on the upper mold plate, and a constant temperature control device is provided on the lower plate surface of the upper mold plate. By providing the constant temperature control device, it is ensured that the nozzle is at a set temperature during the injection process, and the liquid raw material is always kept at the set temperature for injection into the mold cavity.

[0017] Preferably, the injection unit comprises an injection cylinder assembly for injecting the screw-barrel assembly, a material storage motor assembly for storing materials in the screw-barrel assembly, and a seat cylinder assembly for supporting the mold and achieving the retreat of the screw-barrel assembly.

[0018] The beneficial effects of the utility model are as follows: the special machine for thermosetting and graphite raw material products can meet the needs of conveying harder raw materials for injection, effectively improve the fluidity of raw material injection molding, make injection molding smoother, and produce products without flash, and the quality of injection molding products is good. It effectively improves the wear resistance and hardness of the screw and increases the service life of the sub-screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a special machine for thermosetting and graphite raw material products of the utility model;

[0020] FIG2 is a partial cross-sectional view of the utility model special machine for thermosetting and graphite raw material products;

[0021] FIG3 is a schematic diagram of the structure of the screw barrel assembly of the utility model;

[0022] FIG4 is a schematic diagram of an exploded structure of the screw barrel assembly of the utility model;

[0023] Figure 5 It is a cross-sectional view of the screw barrel assembly in the utility model;

[0024] Figure 6 It is a partial cross-sectional view of the screw in the utility model;

[0025] Figure 7 It is a structural schematic diagram of the clamping assembly in the utility model;

[0026] Figure 8 It is a structural schematic diagram of the injection unit in the utility model;

[0027] Fig. 9 It is a structural schematic diagram of the upper template in the utility model;

[0028] Fig.10 It is a cross-sectional view of the upper template in the utility model;

[0029] Fig.11 It is a structural schematic diagram of the screw barrel assembly in Example 2;

[0030] In the figure: 1, clamping assembly, 11, upper template, 12, lower template, 13, machine column, 14, cylinder lower template, 15, mold cylinder assembly;

[0031] 2. Injection unit, 21. Shooting cylinder assembly, 22. Storage motor assembly, 23. Base cylinder assembly, 24. Guide column;

[0032] 3. Screw barrel assembly, 4. Frame assembly, 5. Electronic control assembly,

[0033] 6. screw, 61. rod body, 62. screw thread, 63. guide cone surface, 64. rear connecting end, 65. sprayed metal layer, 66. guide surface, 67. cone tip arc head, 68. transition arc;

[0034] 7. Screw barrel, 71. Barrel cavity, 72. Spiral guide groove, 73. Front section of barrel, 74. Spiral liquid tank section, 75. Back section of barrel, 76. Temperature control spiral cavity, 77. Nozzle installation cavity;

[0035] 8. nozzle, 81. conical cavity, 82. injection hole;

[0036] 9, water ring, 91, liquid inlet joint, 92, liquid outlet joint;

[0037] 10. Constant temperature control device. DETAILED DESCRIPTION

[0038] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] exist Figure 1 , Figure 2 In the illustrated embodiment, a special machine for thermosetting and graphite raw material products includes a clamping assembly 1, an injection unit 2, a screw barrel assembly 3, a frame assembly 4 and an electronic control assembly 5.

[0041] The mold clamping assembly 1 is mounted on the frame assembly 4 , the injection unit 2 is mounted on the upper mold plate of the mold 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 unit 2 .

[0042] like Figure 7 As shown, the clamping assembly 1 includes an upper mold plate 11, a lower mold plate 12, a machine column 13, a cylinder lower mold plate 14 and a mold cylinder assembly 15.

[0043] The clamping assembly 1 is mounted on the frame assembly 4 through the lower template 12, the mold cylinder assembly 15 is mounted below the lower template 12 and connected to the cylinder lower template 14, the machine column 13 is arranged on the cylinder lower template 14, and the upper template 11 is connected to the cylinder lower template 14 through the machine column 13 and the nut. The lower template 12 is arranged in the middle of the machine column 13.

[0044] The clamping assembly 1 acts on the mold opening and closing action of the whole machine, and the movement of the mold cylinder assembly 15 drives the lower mold plate 14 and the upper mold plate 11 to move up and down to complete the mold opening and closing action.

[0045] like Fig. 9 , Fig.10As shown, a screw barrel assembly active cavity 17 is provided on the upper mold plate 11. The screw barrel assembly can move up and down along the screw barrel assembly active cavity 17 to achieve injection.

[0046] A constant temperature control device 10 is provided on the lower plate surface of the upper mold plate 11 in the clamping assembly 1. The constant temperature control device 10 controls the temperature at the nozzle during the injection molding process to always be in the best state for the liquidization of the raw materials for different injection molding materials such as thermosetting and graphite raw materials, so that the raw materials can smoothly enter the mold cavity in the best state for molding. Since the thermosetting and graphite raw materials can soften and flow when heated for the first time, the constant temperature control device controls the raw materials in the flowing state to quickly enter the mold cavity, and utilizes the plasticized flow after the first heating to fill the mold cavity under pressure. In the high temperature heating state of the mold, a chemical reaction occurs, i.e., cross-linking and curing, and hardening occurs, and then solidifies into a product of a certain shape and size.

[0047] like Figure 8 As shown, the injection unit 2 includes a shooting cylinder assembly 21, a material storage motor assembly 22, and a seat cylinder assembly 23. The shooting cylinder assembly 21 acts on the injection of the screw-barrel assembly 3, the material storage motor assembly 22 acts on the material storage process of the screw-barrel assembly 3, and the seat cylinder assembly 23 acts on the screw-barrel assembly 3 to support the mold and realize the retreat of the screw-barrel assembly 3.

[0048] The injection unit 2 is connected and installed on the upper mold plate 11 of the clamping assembly through a seat cylinder assembly 23 and a group of guide pillars 24.

[0049] like Figure 3 , Figure 4 , Figure 5 As shown, the screw-barrel assembly 3 includes a screw 6 , a screw barrel 7 and a nozzle 8 .

[0050] The screw barrel 7 is provided with a barrel cavity 71 inside. The outer circumference of the screw barrel 7 is integrally provided with a barrel front section 73, a spiral liquid tank section 74 and a barrel rear section 75. The diameters of the barrel front section 73 and the barrel rear section 75 are larger than the major diameter of the screw teeth of the spiral liquid tank section 74. The screw teeth of the spiral liquid tank section 74 are designed with a rectangular structure. A water ring 9 is sleeved on the outer side of the spiral liquid tank section 74 of the screw barrel 7. The inner ring surface of the water ring 9 is sealed and connected with the outer circumference of the barrel front section 73 and the barrel rear section 75 of the screw barrel, forming a sealed temperature-controlling spiral cavity 76 in the spiral liquid tank section 74. The water ring 9 is provided with a liquid inlet joint 91 and a liquid outlet joint 92. The liquid inlet joint 91 and the liquid outlet joint 92 are used to connect the heating liquid provided by the external mold temperature controller. The temperature inside the screw barrel 7 is controlled by introducing a heating liquid into the temperature-controlling spiral cavity 76 , thereby heating the thermosetting raw material or graphite raw material inside the screw barrel 7 , making the thermosetting raw material or graphite raw material in a liquid state to facilitate injection molding.

[0051] The barrel front section 73 is provided with a nozzle installation cavity 77, and the nozzle 8 is installed inside the nozzle installation cavity 77. In this embodiment, the nozzle 8 and the nozzle installation cavity 77 are connected by threads.

[0052] The screw 6 is designed according to the characteristics of thermosetting and graphite raw material products, and the screw 6 is subjected to HB220-250 tempering treatment.

[0053] The screw 6 adopts an integrated structure, and the screw 6 includes an integral rod body 61, a screw thread 62, a guide cone 63 and a rear connecting end 64. The screw 6 adopts an integrated overall structure, which has high structural strength and is more conducive to the needs of injection molding of thermosetting and graphite raw material products.

[0054] like Figure 6 As shown, the outer portion of the screw thread 62 is covered with a metal layer 65 having a thickness of 2 to 2.2 mm. The provision of the metal layer 65 can effectively improve the wear resistance of the screw 6, and can transport harder raw materials. The hardness of the screw thread section is HRC58-60, which can greatly improve the hardness of the screw and increase the service life of the screw, and can meet the needs of thermosetting and graphite raw material product injection molding.

[0055] The connection between the screw thread 62 and the rod body 61 is provided with a 120-degree guide surface 66 for achieving stable and smooth material pushing of the screw 6. The guide surface 66 is provided on the opposite side of the screw pushing direction, and the transition arc between the guide surface 66 and the screw thread 62 is larger than the transition arc 68 on the side facing the screw pushing direction.

[0056] The rod body 61 of the screw rod 6 is arranged in a 1-5 inclined structure from the rear connecting end to the flow guide cone surface, so as to realize faster and more stable conveying of raw materials.

[0057] The guide cone 63 is arranged at the front end of the screw, and the taper of the guide cone 63 is 20 to 30 degrees. By setting the cone surface of the front section of the screw, a compression ratio of 1:1 is achieved, which has good stability and good stability in conveying raw materials. In this embodiment, the taper of the guide cone 63 is 28 degrees. A cone tip arc head 67 is arranged at the cone tip of the guide cone 63, and the arc radius of the cone tip arc head 67 is 1 to 5 mm. In this embodiment, the arc radius of the cone tip arc head 67 is 2 mm.

[0058] The inside of the nozzle 8 cooperates with the guide cone to form a conical cavity 81 and an injection hole 82 connected to the conical cavity 81 .

[0059] Embodiment 2:

[0060] exist Fig.11 In the illustrated embodiment, a special machine for thermosetting and graphite raw material products includes a clamping assembly 1, an injection unit 2, a screw barrel assembly 3, a frame assembly 4 and an electronic control assembly 5.

[0061] The mold clamping assembly 1 is mounted on the frame assembly 4 , the injection unit 2 is mounted on the upper mold plate of the mold 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 unit 2 .

[0062] The clamping assembly 1 comprises an upper mold plate 11 , a lower mold plate 12 , a machine column 13 , a cylinder lower mold plate 14 and a mold cylinder assembly 15 .

[0063] The clamping assembly 1 is mounted on the frame assembly 4 through the lower template 12, the mold cylinder assembly 15 is mounted below the lower template 12 and connected to the cylinder lower template 14, the machine column 13 is arranged on the cylinder lower template 14, and the upper template 11 is connected to the cylinder lower template 14 through the machine column 13 and the nut. The lower template 12 is arranged in the middle of the machine column 13.

[0064] The clamping assembly 1 acts on the mold opening and closing action of the whole machine, and the movement of the mold cylinder assembly 15 drives the lower mold plate 14 and the upper mold plate 11 to move up and down to complete the mold opening and closing action.

[0065] A screw barrel assembly active cavity 17 is provided on the upper mold plate 11. The screw barrel assembly can move up and down along the screw barrel assembly active cavity 17 to achieve injection.

[0066] A constant temperature control device 10 is provided on the lower plate surface of the upper mold plate 11 in the clamping assembly 1. The constant temperature control device 10 controls the temperature at the nozzle during the injection molding process to always be in the best state for the liquidization of the raw materials for different injection molding materials such as thermosetting and graphite raw materials, so that the raw materials can smoothly enter the mold cavity in the best state for molding. Since the thermosetting and graphite raw materials can soften and flow when heated for the first time, the constant temperature control device controls the raw materials in the flowing state to quickly enter the mold cavity, and utilizes the plasticized flow after the first heating to fill the mold cavity under pressure. In the high temperature heating state of the mold, a chemical reaction occurs, i.e., cross-linking and curing, and hardening occurs, and then solidifies into a product of a certain shape and size.

[0067] The injection unit 2 includes a shooting cylinder assembly 21, a material storage motor assembly 22, and a seat cylinder assembly 23. The shooting cylinder assembly 21 acts on the injection of the screw-barrel assembly 3, the material storage motor assembly 22 acts on the material storage process of the screw-barrel assembly 3, and the seat cylinder assembly 23 acts on the screw-barrel assembly 3 to support the mold and realize the retreat of the screw-barrel assembly 3.

[0068] The injection unit 2 is connected and installed on the upper mold plate 11 of the clamping assembly through a seat cylinder assembly 23 and a group of guide pillars 24.

[0069] The screw-barrel assembly 3 comprises a screw 6 , a screw barrel 7 and a nozzle 8 .

[0070] The screw barrel 7 is provided with a barrel cavity 71 inside, and the outer circumference of the screw barrel 7 is integrally provided with a barrel front section 73, a spiral liquid tank section 74 and a barrel rear section 75. The diameters of the barrel front section 73 and the barrel rear section 75 are larger than the major diameter of the screw teeth of the spiral liquid tank section 74. The screw teeth of the spiral liquid tank section 74 are designed with a rectangular structure. A water ring 9 is sleeved on the outer side of the spiral liquid tank section 74 of the screw barrel 7. The inner ring surface of the water ring 9 is sealed and connected with the outer circumference of the barrel front section 73 and the barrel rear section 75 of the screw barrel, and a sealed temperature-controlling spiral cavity 76 is formed in the spiral liquid tank section 74. The water ring 9 is provided with a liquid inlet joint 91 and a liquid outlet joint 92. The liquid inlet joint 91 and the liquid outlet joint 92 are used to connect the heating liquid provided by the external mold temperature controller. The temperature inside the screw barrel 7 is controlled by introducing a heating liquid into the temperature-controlling spiral cavity 76 , thereby heating the thermosetting raw material or graphite raw material inside the screw barrel 7 , making the thermosetting raw material or graphite raw material in a liquid state to facilitate injection molding.

[0071] A spiral guide groove 72 is provided on the cavity wall of the barrel cavity 71 where the spiral liquid groove section 74 is located. The pitch of the spiral guide groove 72 is smaller than the pitch of the thread on the screw. When in use, the screw exhibits a dislocation movement during the rotation process, so that the thermosetting raw material or graphite raw material can be more fully liquefied during use, and stable and rapid feeding is achieved.

[0072] The barrel front section 73 is provided with a nozzle installation cavity 77, and the nozzle 8 is installed inside the nozzle installation cavity 77. In this embodiment, the nozzle 8 and the nozzle installation cavity 77 are connected by threads.

[0073] The screw 6 is designed according to the characteristics of thermosetting and graphite raw material products, and the screw 6 is subjected to HB220-250 tempering treatment.

[0074] The screw 6 adopts an integrated structure, and the screw 6 includes an integral rod body 61, a screw thread 62, a guide cone 63 and a rear connecting end 64. The screw 6 adopts an integrated overall structure, which has high structural strength and is more conducive to the needs of injection molding of thermosetting and graphite raw material products.

[0075] The outer surface of the screw thread 62 is covered with a sprayed metal layer 65, and the thickness of the sprayed metal layer 65 is 2-2.2 mm. The arrangement of the sprayed metal layer 65 can effectively improve the wear resistance of the screw 6, and can transport harder raw materials. The hardness of the screw thread section is HRC58-60, which can greatly improve the hardness of the screw and increase the service life of the screw, and can meet the needs of thermosetting and graphite raw material product injection molding.

[0076] The connection between the screw thread 62 and the rod body 61 is provided with a 120-degree guide surface 66 for achieving stable and smooth material pushing of the screw 6. The guide surface 66 is provided on the opposite side of the screw pushing direction, and the transition arc between the guide surface 66 and the screw thread 62 is larger than the transition arc on the side facing the screw pushing direction.

[0077] The rod body 61 of the screw rod 6 is arranged in a 1-5 inclined structure from the rear connecting end to the flow guide cone surface, so as to realize faster and more stable conveying of raw materials.

[0078] The guide cone 63 is arranged at the front end of the screw, and the taper of the guide cone 63 is 20 to 30 degrees. By setting the cone surface of the front section of the screw, a compression ratio of 1:1 is achieved, which has good stability and good stability in conveying raw materials. In this embodiment, the taper of the guide cone 63 is 30 degrees. A cone tip arc head 67 is arranged at the cone tip of the guide cone 63, and the arc radius of the cone tip arc head 67 is 1 to 5 mm. In this embodiment, the arc radius of the cone tip arc head 67 is 3 mm.

[0079] The inside of the nozzle 8 cooperates with the guide cone to form a conical cavity 81 and an injection hole 82 connected to the conical cavity 81 .

[0080] 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. A special machine for thermosetting and graphite raw material products, comprising a clamping assembly (1) for opening and closing the mold of the whole machine and an injection unit (2) for material storage and injection, Features: A screw-barrel assembly (3) is arranged on the injection unit (2), and the screw-barrel assembly (3) comprises a screw (6), a screw barrel (7) and a nozzle (8) of an integrated structure, a guide cone (63) is integrally arranged at the end of the screw (6), and a thread (62) with an externally clad melt-sprayed metal layer (65) is integrally arranged on the screw (6).

2. The machine for thermosetting and graphite raw material products according to claim 1, Features: The taper of the guide cone surface (63) is 20 to 30 degrees, and a cone tip circular arc head (67) is provided at the cone tip of the guide cone surface (63). The circular arc radius of the cone tip circular arc head (67) is 1 to 5 mm.

3. The machine for producing thermosetting and graphite raw materials according to claim 1, Features: The thickness of the sprayed metal layer (65) is 2-2.2 mm, and the hardness of the thread segment is HRC58-60.

4. The machine for producing thermosetting and graphite raw materials according to claim 1, Features: The rod body (61) of the screw rod (6) is arranged in a 1-5 inclined structure from the rear end to the flow guide cone surface (63), and a 120-degree flow guide surface (66) is arranged at the connection between the thread (62) and the rod body (61) of the screw rod.

5. The machine for thermosetting and graphite raw material products according to any one of claims 1 to 4, Features: A barrel cavity (71) is arranged inside the screw barrel (7), and a barrel front section (73), a spiral liquid tank section (74) and a barrel rear section (75) are integrally arranged on the outer circumference of the screw barrel (7).

6. The machine for producing thermosetting and graphite raw materials according to claim 5, Features: A water ring (9) is provided on the outer sealing sleeve of the spiral liquid groove section (74) of the screw barrel (7), and the inner wall of the water ring and the spiral liquid groove section (74) form a temperature-controlling spiral cavity (76).

7. The machine for producing thermosetting and graphite raw materials according to claim 5, Features: A spiral guide groove (72) is provided on the cavity wall of the barrel cavity (71) where the spiral liquid groove section (74) is located.

8. The machine for thermosetting and graphite raw material products according to any one of claims 1 to 4, Features: The inside of the nozzle (8) is provided with a conical cavity (81) and an injection hole (82) communicating with the conical cavity (81) in cooperation with the guide conical surface.

9. The machine for producing thermosetting and graphite raw materials according to any one of claims 1 to 4, Features: The clamping assembly (1) is provided with an upper mold plate (11), a screw barrel assembly active cavity (17) is provided on the upper mold plate (11), and a constant temperature control device (10) is provided on the lower plate surface of the upper mold plate (11).

10. The machine for thermosetting and graphite raw material products according to any one of claims 1 to 4, Features: The injection unit (2) comprises an injection cylinder assembly (21) for injecting the screw-barrel assembly, a material storage motor assembly (22) for storing material in the screw-barrel assembly, and a seat cylinder assembly (23) for supporting the mold with the screw-barrel assembly and realizing the backward movement of the screw-barrel assembly.

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