A processing device and a processing method for forming plastic products

Abstract

The present invention provides a processing device and a processing method for plastic product molding, which relates to the field of plastic product processing technology, including a workbench, an extrusion device, a discharge head, an upper mold and a lower mold, wherein the discharge head is connected and arranged at the output end of the extrusion device, the extrusion device is arranged at one end of the workbench, the upper mold is detachably connected and arranged at the output end of the discharge head, and the lower mold is detachably arranged below the upper mold. The present invention heats and extrudes the plastic raw material by using the extrusion device to melt it to form liquid plastic, which is introduced from the inner tube into the discharge pipe. After the addition is completed, the push rod is extended so that the end plug blocks the lower end of the discharge pipe and is flush with the lower end of the discharge pipe and the inner wall of the upper mold, thereby saving a certain amount of plastic in the feed trough to contact the product, and the outer ring and the blade arranged in combination are convenient for trimming and cutting the edge of the product before taking out the product, and the step of cutting the product after taking it out is required.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic product processing, and in particular to a processing device and a processing method for plastic product molding. Background Art

[0002] Currently, plastics are processed in a variety of forms, usually including injection molding, extrusion molding, blow molding, calendering molding and rotational molding.

[0003] For example, a processing device for molding plastic products with the publication number "CN109834906B" comprises an equipment body, a cavity arranged in the equipment body, a hot-melt plastic injection device arranged in the cavity, the hot-melt plastic injection device comprising a hot-melt chamber fixedly arranged in the cavity, a hot-melt plastic cavity arranged in the hot-melt chamber, and liquid plastic after hot-melt treatment can be placed in the hot-melt plastic cavity; the invention aims to design a processing device for molding plastic products that can automatically inject hot-melt plastic into a mold, cool and mold the hot-melt plastic through a cooling and molding device, and automatically drop the processed plastic nodes into a plastic node conveying device for automatic transportation, without the need for manual operation, and with a high degree of automation.

[0004] However, in the prior art, when some large plastic products are injection molded using molds, such as plastic barrel structures, the plastic particles are usually melted first and squeezed into the assembled molds. After the liquid plastic entering the molds is cooled and formed, it can be taken out of the molds. Generally, when the molds are spliced, some gaps will be generated at the edges between the molds. After the plastic is squeezed into the molds, some plastic will appear in the gaps between the molds, resulting in uneven edges of the finished products. At this time, the staff are generally required to trim the finished plastic products, which will increase the workload of the staff. At the same time, if the staff is skilled in trimming, they can usually trim one side flat. If the staff is unskilled, they may use the blade to cut too much or too little when trimming, which requires repeated repairs, or the product may be damaged during cutting. Summary of the invention

[0005] The purpose of the invention is to solve the problem in the prior art that the product needs to be manually trimmed after being taken out of the mold, which increases the labor of the staff.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a processing device for forming plastic products, comprising a workbench, an extrusion device, a discharge head, an upper mold and a lower mold, the discharge head is connected and arranged at the output end of the extrusion device, the extrusion device is arranged at one end of the workbench, the upper mold is detachably connected and arranged at the output end of the discharge head, the lower mold is detachably arranged below the upper mold, the first cylinder passing above the workbench is provided with a bracket, the lower mold is arranged above the bracket, the outer thread sleeve of the lower mold is provided with an outer ring, the inner side of the upper end of the outer ring is connected to the outer thread of the lower end of the upper mold, the inner side of the upper end of the outer ring is provided with a blade, the lower part of the outer ring is driven to rotate by a motor, and the inner part of the lower mold A cooling mechanism is provided, which includes a refrigeration strip, an air duct and a blower head. An assembly groove is provided on the upper part of the lower mold, and a sealing plug is provided on the lower part of the assembly groove through a second cylinder. The upper end of the sealing plug is flush with the upper part of the lower mold. The refrigeration strip is arranged at the inner edge of the lower mold. The blower head is provided with multiple blowers and is connected with one end of the air duct. The end of the air duct away from the blower head passes through the lower end of the lower mold and extends outward. The air duct is connected with an external fan, and the air outlet end of the blower head extends to the inside of the assembly groove. The discharge head includes a discharge pipe, a push rod and an end plug. The discharge pipe is connected with the discharge end of the extrusion device, and the push rod is slidably arranged in the discharge pipe. The discharge pipe is centrally arranged. The structure is wide at the center and narrow at the lower end, the end plug is arranged at the lower end of the push rod, and the end plug is sealingly and slidably arranged with the inner wall of the lower end of the discharge pipe, a feed trough is arranged above the upper mold, the lower ends of the end plug and the discharge pipe are flush with the upper inner wall of the upper mold, a heating mechanism is arranged on the outer wall of the discharge pipe, a bracket is arranged above the workbench on one side of the bracket, an oil absorption pad is arranged below the bracket, a sponge is laid on the outer wall of the oil absorption pad, a first magnetic block is arranged above the oil absorption pad, a second magnetic block which is arranged to be mutually adsorbed with the first magnetic block is arranged below the upper end of the bracket, the second magnetic block is electrically connected to an external power supply, a slide rail is arranged above the workbench, the lower part of the bracket is slidably arranged in the slide rail, and the lower part of the bracket slides in the slide rail through a fifth cylinder The fifth cylinder is driven to move the bracket on the workbench. Before the upper mold and the lower mold are installed, the bracket is moved to the bottom of the bracket. The bracket is a lifting bracket, which can be driven to rise and fall by the cylinder. The second magnetic block is powered off, and the oil absorption pad falls down to the lower mold under the action of gravity, and then the bracket is reset to the bottom of the upper mold. The first cylinder is extended to drive the lower mold to move up, so that the upper mold and the lower mold can be installed. The oil absorption pad is located between the upper mold and the lower mold and is squeezed. The lubricating oil is squeezed out and evenly applied between the upper mold and the lower mold to avoid the product sticking between the inner wall of the upper mold and the lower mold. After the application is completed, the oil absorption pad is reset, and the second magnetic block is powered on to generate magnetism and adsorb to the first magnetic block, thereby lifting the oil absorption pad.After the oil absorption pad is separated from the lower mold, the lower mold is reset to the bottom of the upper mold, and the upper mold and the lower mold are positioned and assembled.

[0007] As a preferred embodiment, the motor is arranged on a bracket, a first gear is rotatably provided under the outer ring, a second gear is linked to the output end of the motor, the first gear is meshed and linked with the second gear, and the second gear is driven to rotate by the motor, thereby driving the first gear to rotate, so that the outer ring rotates relative to the edge thread of the lower mold, wherein the length of the first gear is longer than the length of the second gear, and during the meshing process of the first gear and the second gear, the first gear and the second gear can move up and down, thereby achieving the effect of driving the outer ring thread to rotate.

[0008] As a preferred embodiment, a fixed shaft is provided at the lower end of the blade, and the lower end of the fixed shaft rotates to pass through the outer ring and the first gear and extend outwardly; a toothed plate is provided below the outer ring through a third cylinder; the toothed plate is meshed and rotated with the outer wall of the fixed shaft on the end face side away from the third cylinder; the toothed plate can be extended and retracted by extending and retracting the third cylinder, thereby driving the fixed shaft to rotate; after the upper mold and the lower mold are installed, the blade can be rotated to be parallel to the outer ring so that the blade is separated from the lower mold to avoid damage to the upper mold or the lower mold when the outer ring is rotated and installed; when the upper mold and the lower mold are separated, the blade is rotated to an inclined state so that the blade edge is in contact with the edge of the product; at this time, rotating the outer ring can drive the blade to rotate around the product, and the edge of the product can be cut to make the edge of the product smooth.

[0009] As a preferred embodiment, a heat-conducting layer is provided on the outer wall of the fixed shaft, and the upper end of the heat-conducting layer is assembled and connected to the blade. A heat-conducting ring is rotatably provided on the outer side of the fixed shaft, and the outer wall of the heat-conducting ring is assembled and connected to the refrigeration strip through a heat-conducting strip. After the refrigeration strip is started, not only can the plastic product be cooled quickly, but the low temperature at the refrigeration strip can be transferred to the heat-conducting layer through the heat-conducting strip and the heat-conducting ring, thereby realizing cooling of the blade, so that when the blade is used to cut the edge of the product, the product will not melt due to the high temperature of the blade itself, thereby ensuring the quality of the product.

[0010] As a preferred embodiment, an elastic membrane is provided above the assembly groove, and the edge of the elastic membrane is sealingly assembled with the edge of the upper end edge of the assembly groove. By blowing air into the assembly groove through a blower head, the air pressure in the space between the top of the sealing plug and the assembly groove can be increased, and excess air can push the elastic membrane upward, pushing the elastic membrane upward and stretching it open, thereby creating a certain gap between the bottom of the product and the lower mold, thereby facilitating the removal of the product from the lower mold.

[0011] As a preferred embodiment, the discharge pipe is in a bent right-angle structure, and a fourth cylinder is slidably penetrated at the corner position of the discharge pipe, and the lower end of the fourth cylinder is assembled and connected with the upper end of the push rod, and a sealing block is slidably provided on the outer wall of the push rod, and the sealing block is sealingly and slidably connected with the inner wall of the discharge pipe, and an inner tube is provided in the discharge pipe, and one end of the inner tube is sealingly assembled and connected with the discharge end of the extrusion equipment, and the other end of the inner tube passes through the sealing block and extends to the inside of one end of the discharge pipe. The fourth cylinder is provided to facilitate the extension and retraction of the push rod, thereby achieving the movement of the end plug and realizing the sealing operation of the injection holes on the upper mold, and the inner tube is provided to facilitate the direct injection of the molten plastic raw material into the lower end of the discharge pipe, thereby minimizing the contact with the inner wall of the discharge pipe.

[0012] As a preferred embodiment, the heating mechanism is arranged on the outer wall of the discharge pipe where one end of the push rod is provided, and the heating mechanism includes a spiral tube, the air inlet end of the spiral tube is connected to the exhaust gas discharge end of the extrusion equipment, and the spiral tube is wound around the outer wall of the discharge pipe. Through the spiral tube, the built-in heating system of the extrusion equipment heats the plastic, and the generated exhaust gas has a high temperature. When passing through the spiral tube, the discharge pipe can be heated to prevent the plastic in the discharge pipe from cooling and solidifying, which makes the push rod unable to move.

[0013] As a preferred embodiment, an oil barrel is provided above the bracket, and an oil pipe is connected to the bottom of the oil barrel, the upper end of the second magnetic block is slidably engaged with the lower end of the oil pipe, and the lower end of the oil pipe is connected to a wide pipe, and the wide pipe is in a wide lower and narrower structure. The outer wall of the second magnetic block is sealed and slidably arranged above the inner wall of the wide pipe, and the lower part of the second magnetic block is assembled and connected with the lower part of the wide pipe through a spring. When the lower part of the second magnetic block is not connected to the oil absorption pad, the spring pushes the second magnetic block to move upward until it slides to the top of the wide pipe, and the outer wall of the second magnetic block is sealed and connected to the top of the wide pipe, so as to block the lubricating oil in the oil barrel and prevent leakage. On the contrary, after the second magnetic block is adsorbed by the first magnetic block, the oil absorption pad is heavier, which pulls the second magnetic block downward. Since the wide pipe is narrow at the top and wide at the bottom, a gap is left between the wide pipe and the second magnetic block, so that the lubricating oil can pass through the wide pipe and fall, and drip on the oil absorption pad. Since the oil absorption pad is covered with a sponge, the lubricating oil can be adsorbed to prevent it from dripping.

[0014] The present invention also provides a processing method for a processing device for forming a plastic product, comprising the following steps:

[0015] S1. Drive the fifth cylinder to move the bracket to the bottom of the bracket, cut off the power of the second magnetic block to make the oil absorption pad fall onto the lower mold, reset the bracket to the bottom of the upper mold, move the lower mold upward to squeeze the oil absorption pad, so that the lubricating oil on the oil absorption pad is evenly applied between the upper mold and the lower mold, and reset the oil absorption pad to the bottom of the bracket again, and reset the lower mold to assemble and fit with the upper mold;

[0016] S2, adding plastic raw materials into the extrusion equipment, driving the extrusion equipment, heating and extruding the plastic raw materials to melt them to form liquid plastic, and introducing them from the inner tube into the discharge pipe. After the addition is completed, the push rod is extended so that the end plug blocks the lower end of the discharge pipe and is flush with the lower end of the discharge pipe and the inner wall of the upper mold;

[0017] S3, driving the refrigeration strip to refrigerate the molten plastic to cool it down and set it into shape;

[0018] S4, contract the first cylinder to drive the upper mold to separate from the product, drive the motor to rotate, drive the outer ring to rotate, and realize cutting the edge of the product to ensure that the product surface is flat and beautiful;

[0019] S5, through the cooperation of the fan and the blower head, air is blown between the product and the lower mold to create a gap for easy material removal.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] The present invention uses an extrusion device to heat and extrude the plastic raw material to melt it to form liquid plastic, which is then introduced from the inner tube into the discharge tube. After the addition is completed, the push rod is extended so that the end plug seals the lower end of the discharge tube and is flush with the lower end of the discharge tube and the inner wall of the upper mold, thereby saving a certain amount of plastic in the feed trough to contact the product. The outer ring and the blade that are arranged in combination facilitate trimming and cutting the edge of the product before taking it out, and the step of cutting it after the product is taken out.

[0022] The present invention heats the plastic through the spiral tube and the built-in heating system of the extrusion equipment. The generated waste gas has a high temperature and can heat the discharge pipe when passing through the spiral tube, thereby preventing the plastic in the discharge pipe from cooling and solidifying, causing the push rod to be unable to move.

[0023] The oil absorbing pad provided in the present invention facilitates evenly applying lubricating oil to the inner wall between the upper mold and the lower mold before injection molding, so as to facilitate disassembly and avoid damage to the product caused by pulling.

[0024] In the present invention, when the second magnetic block is not connected with the oil absorption pad below, the spring pushes the second magnetic block to move upward until it slides to the top of the wide tube. The outer wall of the second magnetic block is sealed and connected to the top of the wide tube, so that the lubricating oil in the oil barrel can be blocked to prevent leakage. On the contrary, after the second magnetic block is adsorbed by the first magnetic block, the oil absorption pad is heavier and pulls the second magnetic block downward. Since the wide tube is narrow at the top and wide at the bottom, a gap can be left between the wide tube and the second magnetic block. The lubricating oil can pass through the wide tube and fall and drip onto the oil absorption pad. Since the oil absorption pad is covered with a sponge, the lubricating oil can be adsorbed to prevent it from dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a processing device for plastic product molding and a processing method thereof provided by the present invention;

[0026] Figure 2 A schematic diagram of the assembly of an upper mold and a discharge head of a processing device and a processing method for plastic product molding provided by the present invention;

[0027] Figure 3 A schematic diagram of a discharging head of a processing device and a processing method for plastic product molding provided by the present invention;

[0028] Figure 4 A schematic diagram of a lower mold of a processing device and a processing method for plastic product molding provided by the present invention;

[0029] Figure 5 A schematic diagram of the internal structure of a lower mold of a processing device and a processing method for forming a plastic product provided by the present invention;

[0030] Figure 6 A schematic diagram of a bracket for a processing device and a processing method for plastic product molding provided by the present invention;

[0031] Figure 7 A schematic diagram of a blade of a processing device and a processing method for plastic product molding provided by the present invention;

[0032] Figure 8 A schematic diagram of the assembly of a support and an oil absorbing pad for a processing device and a processing method for plastic product molding provided by the present invention;

[0033] Fig. 9 A schematic diagram of an oil pipe for a processing device and a processing method for plastic product molding provided by the present invention;

[0034] Fig.10 A schematic diagram of the internal structure of an oil pipe of a processing device and a processing method for plastic product molding provided by the present invention;

[0035] Fig.11A schematic diagram of an oil absorbing pad for a processing device and a processing method for plastic product molding provided by the present invention.

[0036] Legend:

[0037] 1. Workbench; 2. Extrusion equipment; 3. Discharge head; 4. Upper mold; 5. Lower mold; 6. First cylinder; 7. Bracket; 811. Outer ring; 812. Blade; 813. Motor; 911. Refrigeration strip; 912. Air duct; 913. Blower head; 101. Assembly groove; 102. Second cylinder; 103. Sealing plug; 104. Fan; 111. Discharge pipe; 112. Push rod; 113. End plug; 12. Feed trough; 131. Second gear; 132. First gear Wheel; 141, fixed shaft; 142, third cylinder; 143, tooth plate; 151, heat-conducting layer; 152, heat-conducting ring; 153, heat-conducting strip; 16, elastic film; 171, fourth cylinder; 172, sealing block; 173, inner tube; 18, spiral tube; 191, bracket; 192, oil absorption pad; 193, first magnetic block; 194, second magnetic block; 195, slide rail; 196, fifth cylinder; 201, oil drum; 202, oil pipe; 203, wide pipe; 204, spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-11The present invention provides a technical solution: a processing device for forming plastic products, comprising a workbench 1, an extrusion device 2, a discharge head 3, an upper mold 4 and a lower mold 5, the discharge head 3 is connected and arranged at the output end of the extrusion device 2, the extrusion device 2 is arranged at the upper end of the workbench 1, the upper mold 4 is detachably connected and arranged at the output end of the discharge head 3, the lower mold 5 is detachably arranged below the upper mold 4, a first cylinder 6 passing above the workbench 1 is provided with a bracket 7, the lower mold 5 is arranged above the bracket 7, an outer thread sleeve of the lower mold 5 is provided with an outer ring 811, the inner side of the upper end of the outer ring 811 is connected with the outer thread of the lower end of the upper mold 4, a blade 812 is provided on the inner side of the upper end of the outer ring 811, the lower end of the outer ring 811 is driven to rotate by a motor 813, and a cooling machine is provided inside the lower mold 5 The cooling mechanism includes a refrigeration strip 911, an air duct 912 and an air blower head 913. An assembly groove 101 is provided on the upper part of the lower mold 5. A sealing plug 103 is provided on the lower part of the assembly groove 101 through a second cylinder 102. The upper end of the sealing plug 103 is flush with the upper part of the lower mold 5. The refrigeration strip 911 is arranged at the inner edge of the lower mold 5. The air blower head 913 is provided with a plurality of refrigeration strips and is connected with one end of the air duct 912. The end of the air duct 912 away from the air blower head 913 passes through the lower end of the lower mold 5 and extends outside. The air duct 912 is connected with an external fan 104. The air outlet end of the air blower head 913 extends to the inside of the assembly groove 101. The discharge head 3 includes a discharge pipe 111, a push rod 112 and an end plug 113. The discharge pipe 111 is connected with the discharge end of the extrusion device 2. The push rod 112 is slidably arranged inside the discharge pipe 111. The discharge pipe 111 is a structure with a wide center and a narrow lower end. The end plug 113 is arranged at the lower end of the push rod 112. The end plug 113 is sealed and slidably arranged with the inner wall of the lower end of the discharge pipe 111. A feed groove 12 is arranged above the upper mold 4. The lower ends of the end plug 113 and the discharge pipe 111 are flush with the upper inner wall of the upper mold 4. A heating mechanism is arranged on the outer wall of the discharge pipe 111. When performing plastic processing operations, the plastic raw material particles are introduced into the extrusion device 2, wherein the extrusion device 2 is a plastic extruder with a built-in threaded push piece, which can push the plastic raw material from the feed end to the discharge end. The process heats and extrude the plastic, and the plastic liquid is in a molten state when it is discharged from the discharge end of the extrusion device 2. The discharge end of the extrusion device 2 is connected to the discharge end. The tube 111 is connected, and the liquid plastic quantitatively flows into the closed space between the upper mold 4 and the lower mold 5. When the quantitative liquid fills the space, the addition is stopped, and the push rod 112 is driven to extend, and the push rod 112 is moved downward so that the end plug 113 at the lower end of the push rod 112 is flush with the upper part of the upper mold 4. At this time, the end plug 113 can be flush with the liquid surface, avoiding the situation where a protruding part appears above the product after the product is exported, which requires subsequent manual cutting, saving the workload of the staff. After the molten plastic is injected between the molds, the cooling mechanism in the lower mold 5 can cool the liquid plastic to shape it. During cooling, the refrigeration strip 911 is energized to quickly cool the plastic liquid near the edge of the lower mold 5. After cooling and shaping,The mold and the product are separated. During the separation process, the first cylinder 6 is contracted to drive the lower mold 5 to move downward. Under the action of gravity, the product and the lower mold 5 are separated from the upper mold 4. The second cylinder 102 is contracted to drive the sealing plug 103 to move downward, so that the blower head 913 is exposed in the assembly groove 101. At this time, the fan 104 arranged outside is driven to blow air inward through the air duct 912 and the blower head 913. The cold air enters the assembly groove 101 through the blower head 913 and lifts the product, so that a gap is generated between the product and the lower mold 5, thereby achieving the effect of rapid demoulding. When the product is demoulded from the lower mold 5, the outer ring 811 is driven to rotate, and the blade 812 on the outer ring 811 rotates around the edge of the product, which can cut the edge of the product, so that the excess part is cut to ensure the flatness of the product.

[0040] A bracket 191 is provided above the workbench 1 located on one side of the bracket 7, an oil-absorbing pad 192 is provided below the bracket 191, a sponge is laid on the outer wall of the oil-absorbing pad 192, a first magnetic block 193 is provided above the oil-absorbing pad 192, a second magnetic block 194 is provided below the upper end of the bracket 191 and is adsorbed to the first magnetic block 193, the second magnetic block 194 is electrically connected to an external power supply, a slide rail 195 is provided above the workbench 1, the lower part of the bracket 7 is slidably arranged in the slide rail 195, the lower part of the bracket 7 is slidably arranged in the slide rail 195 by a fifth cylinder 196, the bracket 7 is driven to move on the workbench 1 by driving the fifth cylinder 196, and the bracket 7 is moved to the bottom of the bracket 191 before the upper mold 4 and the lower mold 5 are installed. The bracket 7 is moved to the bottom of the bracket 191, and the bracket 191 is a lifting frame, which can be driven to rise and fall by the cylinder. The magnetic block 194 is powered off, and the oil absorption pad 192 falls downward onto the lower mold 5 under the action of gravity, thereby resetting the bracket 7 to just below the upper mold 4, and extending the first cylinder 6 to drive the lower mold 5 to move upward, so that the installation of the upper mold 4 and the lower mold 5 can be realized. The oil absorption pad 192 is located between the upper mold 4 and the lower mold 5 and is squeezed. The lubricating oil is squeezed out and evenly applied between the upper mold 4 and the lower mold 5 to prevent the product from sticking between the inner walls of the upper mold 4 and the lower mold 5. After the application is completed, the oil absorption pad 192 is reset, and the second magnetic block 194 is energized to generate magnetism and adsorb to the first magnetic block 193, thereby lifting the oil absorption pad 192. After the oil absorption pad 192 is separated from the lower mold 5, the lower mold 5 is reset to below the upper mold 4, and the upper mold 4 and the lower mold 5 are positioned and assembled.

[0041] like Figure 1-11As shown, the motor 813 is arranged on the bracket 7, and a first gear 132 is rotatably provided under the outer ring 811, and a second gear 131 is linked to the output end of the motor 813, and the first gear 132 is meshed and linked with the second gear 131. By driving the motor 813, the second gear 131 is driven to rotate, and then the first gear 132 is driven to rotate, so that the outer ring 811 is threadedly rotated relative to the edge of the lower mold 5, wherein the length of the first gear 132 is longer than that of the second gear 131. During the meshing process of the first gear 132 and the second gear 131, the first gear 132 and the second gear 131 can move up and down, thereby achieving the effect of driving the outer ring 811 to rotate.

[0042] like Figure 1-11 As shown, a fixed shaft 141 is provided at the lower end of the blade 812, and the lower end of the fixed shaft 141 rotates through the outer ring 811 and the first gear 132 and extends outside. A tooth plate 143 is provided below the outer ring 811 through the third cylinder 142. The tooth plate 143 is meshed and rotated with the outer wall of the fixed shaft 141 on the end surface side away from the third cylinder 142. By extending and retracting the third cylinder 142, the tooth plate 143 can be driven to extend and retract, thereby driving the fixed shaft 141 to rotate. When the upper mold 4 and the lower mold 5 are installed, the blade can be 812 is rotated to be parallel to the outer ring 811, so that the blade 812 is separated from the lower mold 5, avoiding damage to the upper mold 4 or the lower mold 5 when the outer ring 811 is rotated and installed. When the upper mold 4 is separated from the lower mold 5, the blade 812 is rotated to an inclined state so that the blade position of the blade 812 is in contact with the edge of the product. At this time, rotating the outer ring 811 can drive the blade 812 to rotate around the product, so that the edge of the product can be cut to make the edge of the product smooth.

[0043] like Figure 1-11 As shown, a heat-conducting layer 151 is provided on the outer wall of the fixed shaft 141, and the upper end of the heat-conducting layer 151 is assembled and connected with the blade 812. A heat-conducting ring 152 is rotatably provided on the outer side of the fixed shaft 141, and the outer wall of the heat-conducting ring 152 is assembled and connected with the refrigeration strip 911 through a heat-conducting strip 153. After the refrigeration strip 911 is started, not only can the plastic product be cooled quickly, but the low temperature at the refrigeration strip 911 can be transferred to the heat-conducting layer 151 through the heat-conducting strip 153 and the heat-conducting ring 152, thereby realizing cooling of the blade 812, so that when the blade 812 is used to cut the edge of the product, the product will not be melted due to the high temperature of the blade 812 itself, thereby ensuring the quality of the product.

[0044] like Figure 1-11As shown, an elastic membrane 16 is provided above the assembly groove 101, and the edge of the elastic membrane 16 is sealed and assembled with the edge of the upper end edge of the assembly groove 101. By blowing air into the assembly groove 101 through the blower head 913, the air pressure in the space between the sealing plug 103 and the assembly groove 101 can be increased, and the excess air can push the elastic membrane 16 upward, and the elastic membrane 16 is pushed upward and stretched, so that a certain gap can be generated between the bottom of the product and the lower mold 5, thereby facilitating the removal of the product from the lower mold 5.

[0045] like Figure 1-11 As shown, the discharge pipe 111 is a bent right-angle structure, and a fourth cylinder 171 is slidably penetrated at the corner position of the discharge pipe 111, and the lower end of the fourth cylinder 171 is assembled and connected with the upper end of the push rod 112, and a sealing block 172 is slidably provided on the outer wall of the push rod 112, and the sealing block 172 is sealingly and slidably connected with the inner wall of the discharge pipe 111, and an inner tube 173 is provided in the discharge pipe 111, and one end of the inner tube 173 is sealingly assembled and connected with the discharge end of the extrusion device 2, and the other end of the inner tube 173 passes through the sealing block 172 and extends to the inside of one end of the discharge pipe 111. Through the fourth cylinder 171, it is convenient to push and retract the push rod 112, so as to move the end plug 113 and realize the sealing operation of the injection hole on the upper mold 4, and through the inner tube 173, it is convenient to directly inject the molten plastic raw material into the lower end of the discharge pipe 111, and minimize the contact with the inner wall of the discharge pipe 111.

[0046] like Figure 1-11 As shown, the heating mechanism is arranged on the outer wall of the discharge pipe 111 at one end of which the push rod 112 is provided. The heating mechanism includes a spiral tube 18. The air inlet end of the spiral tube 18 is connected to the exhaust gas discharge end of the extrusion device 2. The spiral tube 18 is wound around the outer wall of the discharge pipe 111. The built-in heating system of the extrusion device 2 heats the plastic through the spiral tube 18. The temperature of the generated exhaust gas is relatively high. When passing through the spiral tube 18, the discharge pipe 111 can be heated to prevent the plastic in the discharge pipe 111 from cooling and solidifying, which makes the push rod 112 unable to move.

[0047] like Figure 1-11As shown, an oil barrel 201 is provided above the bracket 191, and an oil pipe 202 is connected to the bottom of the oil barrel 201. The upper end of the second magnetic block 194 is slidably engaged with the lower end of the oil pipe 202. The lower end of the oil pipe 202 is connected to a wide pipe 203, and the wide pipe 203 is in a structure of being wide at the bottom and narrow at the top. The outer wall of the second magnetic block 194 is sealed and slidably arranged above the inner wall of the wide pipe 203. The lower part of the second magnetic block 194 is assembled and connected to the lower part of the wide pipe 203 through a spring 204. When the lower part of the second magnetic block 194 is not connected to the oil absorption pad 192, the spring 204 pushes the second magnetic block 194 to move upward until When it slides to the top of the wide tube 203, the outer wall of the second magnetic block 194 is sealed and connected to the top of the wide tube 203, which can block the lubricating oil in the oil barrel 201 to prevent leakage. On the contrary, after the second magnetic block 194 is adsorbed by the first magnetic block 193, the oil absorption pad 192 is heavier and pulls the second magnetic block 194 downward. Since the wide tube 203 is narrow at the top and wide at the bottom, a gap is left between the wide tube 203 and the second magnetic block 194, and the lubricating oil can pass through the wide tube 203 and fall, and drip on the oil absorption pad 192. Since the oil absorption pad 192 is covered with a sponge, the lubricating oil can be absorbed to prevent it from dripping.

[0048] Working principle:

[0049] S1. Drive the fifth cylinder 196 to move the bracket 7 to the bottom of the bracket 191, cut off the power of the second magnetic block 194 to make the oil absorption pad 192 fall onto the lower mold 5, reset the bracket 7 to the bottom of the upper mold 4, move the lower mold 5 upward to squeeze the oil absorption pad 192, so that the lubricating oil on the oil absorption pad 192 is evenly spread between the upper mold 4 and the lower mold 5, and reset the oil absorption pad 192 to the bottom of the bracket 191 again, and reset the lower mold 5 to assemble and fit with the upper mold 4;

[0050] S2, add plastic raw materials into the extrusion device 2, drive the extrusion device 2, heat and extrude the plastic raw materials to melt them to form liquid plastic, and introduce them into the discharge pipe 111 from the inner tube 173. After the addition is completed, extend the push rod 112 so that the end plug 113 blocks the lower end of the discharge pipe 111 and is flush with the lower end of the discharge pipe 111 and the inner wall of the upper mold 4;

[0051] S3, driving the refrigeration strip 911 to refrigerate the molten plastic to cool it down and set it into shape;

[0052] S4, contract the first cylinder 6 to drive the upper mold 4 to separate from the product, drive the motor 813 to rotate, drive the outer ring 811 to rotate, and realize cutting the edge of the product to ensure that the surface of the product is flat and beautiful;

[0053] S5, through the cooperation of the fan 104 and the blast head 913, air is blown between the product and the lower mold 5 to create a gap for easy material removal.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A processing device for forming plastic products, comprising a workbench (1), an extrusion device (2), a discharge head (3), an upper mold (4) and a lower mold (5), wherein the discharge head (3) is arranged in communication with the output end of the extrusion device (2), the extrusion device (2) is arranged on the upper end of the workbench (1), the upper mold (4) is detachably arranged in communication with the output end of the discharge head (3), and the lower mold (5) is detachably arranged below the upper mold (4), characterized in that: A bracket (7) is provided on the first cylinder (6) passing above the workbench (1), the lower mold (5) is arranged above the bracket (7), an outer threaded sleeve is provided with an outer ring (811) on the outer side of the lower mold (5), the inner side of the upper end of the outer ring (811) is connected with the outer thread of the lower end of the upper mold (4), a blade (812) is provided on the inner side of the upper end of the outer ring (811), the lower side of the outer ring (811) is driven to rotate by a motor (813), a cooling mechanism is provided inside the lower mold (5), the cooling mechanism comprises a refrigeration strip (911), an air duct (912) and an air blower (913), an assembly groove (101) is provided on the upper side of the lower mold (5), and the assembly groove ( A sealing plug (103) is provided at the lower part of the lower mold (101) through a second cylinder (102), the upper end of the sealing plug (103) is flush with the upper part of the lower mold (5), the refrigeration strip (911) is arranged at the inner edge of the lower mold (5), a plurality of air blower heads (913) are provided and are connected to one end of the air duct (912), one end of the air duct (912) away from the air blower head (913) passes through the lower end of the lower mold (5) and extends outside, the air duct (912) is connected to an external fan (104), the air outlet end of the air blower head (913) extends to the inside of the assembly slot (101), and the discharge head (3) includes a discharge pipe (111), A push rod (112) and an end plug (113), the discharge pipe (111) is connected to the discharge end of the extrusion device (2), the push rod (112) is slidably arranged inside the discharge pipe (111), the discharge pipe (111) is of a structure with a wide center and a narrow lower end, the end plug (113) is arranged at the lower end of the push rod (112), the end plug (113) and the inner wall of the lower end of the discharge pipe (111) are sealed and slidably arranged, a feed trough (12) is provided above the upper mold (4), the lower ends of the end plug (113) and the discharge pipe (111) are flush with the upper inner wall of the upper mold (4), and a heating mechanism is provided on the outer wall of the discharge pipe (111), which is located above the bracket ( A support (191) is provided above the workbench (1) on one side, an oil absorption pad (192) is provided below the support (191), a sponge is laid on the outer wall of the oil absorption pad (192), a first magnetic block (193) is provided above the oil absorption pad (192), a second magnetic block (194) is provided below the upper end of the support (191) and is arranged to be mutually attracted to the first magnetic block (193), the second magnetic block (194) is electrically connected to an external power supply, a slide rail (195) is provided above the workbench (1), the lower part of the bracket (7) is slidably arranged in the slide rail (195), and the lower part of the bracket (7) is slidably arranged in the slide rail (195) through a fifth cylinder (196).

2. A processing device for forming plastic products according to claim 1, characterized in that: The motor (813) is arranged on the bracket (7); a first gear (132) is rotatably arranged below the outer ring (811); a second gear (131) is linked to the output end of the motor (813); and the first gear (132) and the second gear (131) are meshed and linked.

3. A processing device for forming plastic products according to claim 1, characterized in that: A fixed shaft (141) is provided at the lower end of the blade (812); the lower end of the fixed shaft (141) rotates through the outer ring (811) and the first gear (132) and extends outside; a tooth plate (143) is provided below the outer ring (811) through the third cylinder (142); the tooth plate (143) rotates in mesh with the outer wall of the fixed shaft (141) on the end face side away from the third cylinder (142).

4. A processing device for forming plastic products according to claim 3, characterized in that: The outer wall of the fixed shaft (141) is provided with a heat-conducting layer (151), the upper end of the heat-conducting layer (151) is assembled and connected to the blade (812), and the outer side of the fixed shaft (141) is rotatably provided with a heat-conducting ring (152), and the outer wall of the heat-conducting ring (152) is assembled and connected to the refrigeration strip (911) via a heat-conducting strip (153).

5. A processing device for forming plastic products according to claim 1, characterized in that: An elastic membrane (16) is provided above the assembly groove (101), and the edge of the elastic membrane (16) is sealed and assembled with the upper edge of the assembly groove (101).

6. A processing device for forming plastic products according to claim 1, characterized in that: The discharge pipe (111) is in a bent right-angle structure. A fourth cylinder (171) is slidably inserted into the corner of the discharge pipe (111). The lower end of the fourth cylinder (171) is assembled and connected with the upper end of the push rod (112). A sealing block (172) is slidably provided on the outer wall of the push rod (112). The sealing block (172) is sealingly slidably connected with the inner wall of the discharge pipe (111). An inner tube (173) is provided in the discharge pipe (111). One end of the inner tube (173) is sealingly assembled and connected with the discharge end of the extrusion device (2). The other end of the inner tube (173) passes through the sealing block (172) and extends to the inside of one end of the discharge pipe (111).

7. A processing device for forming plastic products according to claim 6, characterized in that: The heating mechanism is arranged on the outer wall of the discharge pipe (111) at one end of which the push rod (112) is provided, and the heating mechanism comprises a spiral tube (18), the air inlet end of the spiral tube (18) is connected to the exhaust gas discharge end of the extrusion device (2), and the spiral tube (18) is wound around the outer wall of the discharge pipe (111).

8. A processing device for forming plastic products according to claim 1, characterized in that: An oil barrel (201) is provided above the bracket (191), and an oil pipe (202) is provided below the oil barrel (201). The upper end of the second magnetic block (194) is slidably engaged with the lower end of the oil pipe (202). The lower end of the oil pipe (202) is connected to a wide pipe (203), and the wide pipe (203) is in a structure that is wide at the bottom and narrow at the top. The outer wall of the second magnetic block (194) is sealed and slidably arranged above the inner wall of the wide pipe (203), and the lower part of the second magnetic block (194) is assembled and connected to the lower part of the inside of the wide pipe (203) through a spring (204).

9. A processing method for a processing device for forming plastic products, characterized in that: A processing device for forming plastic products according to any one of claims 1 to 8 is used, comprising the following steps: S1, driving the fifth cylinder (196) to move the bracket (7) to the bottom of the support (191), disconnecting the power to the second magnetic block (194) so ​​that the oil absorption pad (192) falls onto the lower mold (5), resetting the bracket (7) to the position directly below the upper mold (4), moving the lower mold (5) upward to squeeze the oil absorption pad (192), so that the lubricating oil on the oil absorption pad (192) is evenly spread between the upper mold (4) and the lower mold (5), and resetting the oil absorption pad (192) to the bottom of the bracket (191), and resetting the lower mold (5) to assemble and fit with the upper mold (4); S2, adding plastic raw materials into the extrusion device (2), driving the extrusion device (2), heating and extruding the plastic raw materials to melt them to form liquid plastic, and introducing them into the discharge pipe (111) from the inner tube (173); after the addition is completed, extending the push rod (112) so that the end plug (113) blocks the lower end of the discharge pipe (111) and is flush with the lower end of the discharge pipe (111) and the inner wall of the upper mold (4); S3, driving the refrigeration strip (911) to refrigerate the molten plastic to cool it down and set it into shape; S4, contracting the first cylinder (6) to drive the upper mold (4) to separate from the product, driving the motor (813) to rotate, driving the outer ring (811) to rotate, and achieving cutting of the edge of the product to ensure that the surface of the product is smooth and beautiful; S5, and by means of the cooperation between the fan (104) and the blast head (913), air is blown between the product and the lower mold (5) to form a gap for easy material removal.

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