Injection molding demolding mechanism and injection mold for frame of vehicle-mounted display

Abstract

The invention relates to the technical field of plastic molding, and discloses an injection molding demolding mechanism and an injection mold for a frame of a vehicle-mounted displayer, the injection molding demolding mechanism comprises an injection molding machine and a sample mold installed on the injection molding machine, the injection molding machine comprises a material pipe, a main driving source and an auxiliary driving source, the sample mold comprises a movable mold and a fixed mold, and a cavity is formed between the movable mold and the fixed mold; a scraping assembly is arranged on the movable mold, a circulating assembly is installed on the material pipe, a transmission part is installed between the movable mold and the fixed mold, and a control assembly is arranged between the movable mold and the circulating assembly. Through the arrangement of the circulating assembly, plastic in the material pipe is in a flowing state, the problem that the temperature of the end, close to the mold, of the material pipe is low, so that the plastic close to the mold is slightly solidified is avoided, and the problem that the temperature of the end, close to the mold, of the non-flowing molten plastic in a nozzle of the material pipe is low is solved. The plastic close to the direction of the mold is slightly solidified, so that flaws are generated on the mold after the next time of molding.

Description

Technical Field

[0001] The invention relates to the technical field of plastic molding, in particular to an injection molding demoulding mechanism and an injection molding mold for a vehicle-mounted display frame. Background Art

[0002] Plastic molding is the process of making various forms of plastics into products or blanks of desired shapes. Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] The injection molding machine injects molten plastic into the mold through a nozzle, waits for the plastic in the mold to cool and form, and then ejects the molded mold through the ejection mechanism on one side of the mold to complete the mold demolding. There are two problems in the cooling process of traditional injection molding. First, after the injection molding machine injects the molten plastic into the mold through the nozzle, a part of the molten plastic will accumulate in the nozzle. Because the model in the mold needs to be cooled and the molten plastic in the material tube is in a non-flowing state, the temperature of the plastic accumulated in the nozzle close to the mold will be low, so that the plastic close to the mold will be slightly solidified, resulting in the next The problem of defects in the mold after molding occurs. Secondly, during the cooling process of the mold, a certain gap is generated between the ejector rod connected to the mold and the mold, which causes the molten plastic to penetrate into the gap. When the plastic in the gap is cooled, it will form a sleeve-like sleeve on the ejector rod, which can easily cause the model to remain on the ejector rod during demolding. When the ejector rod is retracted, the model is retracted into the mold again. When the plastic in the gap cannot be effectively cooled, part of the molten plastic will adhere to the ejector rod after demolding. When the next mold is cooled, the plastic adhered to the ejector rod will cause defects on the surface of the next mold.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an injection molding demolding mechanism and an injection mold for a vehicle display frame. Through the setting of a circulation component, the plastic in the material pipe is in a flowing state, thereby avoiding the problem that the temperature at one end of the material pipe close to the mold is too low, causing the plastic close to the mold to slightly solidify. The problem that the non-flowing molten plastic in the material pipe nozzle, the temperature at one end close to the mold is too low, causing the plastic close to the mold to slightly solidify, resulting in defects in the mold after the next molding is solved.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an injection molding demoulding mechanism, an injection mold for a vehicle-mounted display frame, comprising an injection molding machine, a sample mold installed on the injection molding machine, the injection molding machine comprising a material pipe, a main driving source and an auxiliary driving source, the sample mold comprising a movable mold and a fixed mold, a cavity is arranged between the movable mold and the fixed mold, a scraping assembly is arranged on the movable mold, a circulation assembly is installed on the material pipe, a transmission member is installed between the movable mold and the fixed mold, and a control assembly is arranged between the movable mold and the circulation assembly;

[0007] The scraping assembly includes a scraper, and when the auxiliary driving source drives the movable mold to move and separate from the fixed mold, the transmission member operates and drives the scraper to move into the cavity;

[0008] The circulation component includes a connecting bin, a connecting pipe and a partition piece. The connecting bin is connected to the output end of the material pipe. Both ends of the connecting pipe are fixedly connected to the connecting bin and the material pipe respectively. The partition piece is arranged on the connecting bin. After the auxiliary driving source drives the movable mold to move and combine with the fixed mold, the control component is operated and drives the partition piece to start, so that the output end of the material pipe is connected to the fixed mold and the connection between the material pipe and the connecting bin is closed. After the injection molding in the sample mold is completed, the control component drives the partition piece to start, so that the output end of the material pipe is closed and the material pipe is connected to the connecting bin.

[0009] Preferably, the material pipe includes a tube body and a nozzle, the nozzle is fixedly connected to the connecting bin, the injection molding machine is fixedly connected to a vertical plate, the fixed mold is fixedly connected to the vertical plate, a feed hole is opened on one side of the fixed mold, the nozzle is connected to the feed hole, a feed bin is installed on the tube body, a feeding auger is installed in the tube body, the main driving source includes a driving cylinder, which drives the feeding auger to move toward the nozzle, a heating device is installed outside the tube body, and the connecting pipe is fixedly connected to the outer periphery of one side of the tube body close to the feed bin at one end away from the connecting bin.

[0010] Preferably, the partition member includes a front partition and a side partition, a front hole groove is provided on the top of the outer periphery of the nozzle, the front partition is slidably arranged in the front hole groove and extends into the nozzle, the width of the front partition is greater than the diameter width of the nozzle, a first cylinder is fixedly connected to the top of the vertical plate, and the output end of the first cylinder is fixedly connected to the top of the front partition, the control component includes a start switch, the start switch is fixedly installed on one side of the vertical plate, the start switch is electrically connected to the first cylinder, a pressing plate is fixedly connected to one side of the movable mold, so that when the movable mold and the fixed mold coincide, the pressing plate contacts the start switch, a side hole groove is provided on the top of the connecting bin, the side partition is slidably arranged in the side hole groove and extends into the connecting bin, when the bottom surface of the side partition contacts the bottom surface of the inner cavity of the connecting bin, the partial surface of the side partition arranged in the connecting bin is the same as the cross-sectional size of the inner cavity of the connecting bin, and a transfer member is provided between the side partition and the front partition.

[0011] Preferably, the transfer member includes a roller shaft, a bearing seat is fixedly connected to the top of the connecting bin, both ends of the roller shaft are rotatably connected to the bearing seat through bearings, a plurality of tooth grooves are opened on the outer circumference of the roller shaft, a first tooth plate is fixedly connected to one side of the side partition, the first tooth plate is meshed with the tooth groove, a support plate is fixedly connected to one side of the front partition, the support plate and the front partition are perpendicular to each other, a plurality of hinge seats are fixedly connected to one side of the support plate, a baffle is provided on one side of the hinge seat, the top of the baffle near one end of the support plate is set to a right angle, the bottom of the baffle near one end of the support plate is set to an arc, the baffle is movably hinged to the hinge seat, a torsion spring is installed at the hinge between the baffle and the hinge seat, and the baffle is meshed with the tooth groove.

[0012] Preferably, the auxiliary driving source includes a servo cylinder, which is fixedly connected to an injection molding machine, a load-bearing plate is slidably provided on the injection molding machine, the output end of the servo cylinder is fixedly connected to the load-bearing plate, connecting columns are fixedly connected at four corners of one side of the load-bearing plate, the connecting columns are fixedly connected to four corners of one side of the movable mold, a demolding assembly is provided on one side of the movable mold, the demolding assembly includes four push rods, the four push rods are arranged at four corners of one side of the movable mold, circular holes are provided at the four corners of one side of the movable mold, the push rods are slidably arranged in the circular holes, buffer bins are provided at the four corners of one side of the movable mold close to the fixed mold, the buffer bin is communicated with the cavity, the push rod extends into the buffer bin, a rectangular plate is fixedly connected to one side of the push rod, a third cylinder is fixedly connected to one side of the rectangular plate, and the output end of the third cylinder is fixedly connected to the rectangular plate.

[0013] Preferably, the transmission member includes a first gear and a second gear, the top and bottom of the fixed mold are both provided with an inner groove, the inner groove is communicated with the buffer bin, the scraper is slidably arranged in the inner groove, the top of the scraper is fixedly connected with a movable plate, the movable plate is slidably arranged in the inner groove, one side of the movable plate is fixedly connected with a second tooth plate, the top and the bottom of the movable mold are both fixedly connected with a fixed seat, the first gear is rotatably connected to the fixed seat through a bearing, the second gear is fixedly arranged between the two first gears, the second tooth plate is meshingly connected with the second gear, both ends of one side of the vertical plate are fixedly connected with a fork plate, the bottom of the upper half of the fork plate is fixedly connected with an upper tooth plate, the upper tooth plate is meshingly connected with the first gear, the top of the lower half of the fork plate is fixedly connected with a lower tooth plate, the lower tooth plate is meshingly connected with the first gear, and the front end of the upper tooth plate is close to the tail end of the lower tooth plate.

[0014] Preferably, transverse grooves are provided on both sides of the movable mold, the transverse grooves are connected to the bottom of the inner groove, a sealing plate is slidably connected in the transverse groove, the sealing plate is arranged at the connection between the inner groove and the buffer bin, the third gear is rotatably connected to both sides of the movable mold through bearings, a fourth gear is fixedly connected between the two third gears, a moving plate is fixedly connected to one side of the movable plate, a fourth tooth plate is fixedly connected to one side of the moving plate, the fourth tooth plate is meshingly connected to the fourth gear, a fifth tooth plate is fixedly connected to the top of the sealing plate, and the fifth tooth plate is meshingly connected to the third gear.

[0015] An injection mold for a vehicle display frame uses an injection demoulding mechanism.

[0016] Compared with the prior art, the present invention provides an injection molding demoulding mechanism and an injection mold for a vehicle-mounted display frame, which has the following beneficial effects:

[0017] 1. An injection molding demoulding mechanism and an injection mold for a vehicle display frame. Through the setting of a circulation component, after the material pipe completes injection molding of a sample mold and the nozzle is sealed by a front partition, a transfer member drives the side partition to move upward, and a connecting bin is connected with connecting pipes and the material pipe at both ends thereof, so that the molten plastic in the material pipe slowly flows into the connecting bin and the connecting pipe, thereby ensuring that the temperature of the molten plastic at the nozzle remains unchanged, solving the problem that the non-flowing molten plastic in the nozzle of the material pipe has a low temperature at one end close to the mold, causing the plastic close to the mold to be slightly solidified, resulting in defects in the mold after the next molding.

[0018] 2. An injection molding demolding mechanism and an injection molding mold for a vehicle display frame. The scraper on the scraping assembly and the transmission part are arranged to complete the cooling of the sample in the sample mold. During the separation of the movable mold and the fixed mold, the sealing plate is detached from the connection between the inner groove and the buffer bin, and drives the scraper to move continuously downward, so that the scraper cuts between the push rod and the sample, thereby solving the problem that when the part between the sample and the push rod cannot be effectively cooled, part of the molten plastic adheres to the ejector rod after the mold is demolded, and when the next mold is cooled, the plastic adhered to the ejector rod will cause defects on the surface of the next mold.

[0019] 3. An injection molding demolding mechanism, an injection mold for a vehicle display frame, by arranging multiple buffer bins at the connection between the movable mold and the cavity, and extending one end of the push rod to the buffer bin, so that whether the sample in the buffer bin is cooled or not, it will not affect the damage of the appearance of the sample during demolding, and avoid the problem that when the sample in the buffer bin is not effectively cooled, the viscous sample will adhere to the scraper and the push rod, and the wire drawing phenomenon will occur between the sample and the scraper or the push rod during demolding, thereby causing the problem of damage to the appearance of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0021] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the middle A part;

[0023] Figure 4 It is a schematic diagram of the demoulding assembly structure of the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle B part;

[0025] Figure 6 It is a schematic diagram of the transmission structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle C part;

[0027] Figure 8 It is a cross-sectional view of the movable mold structure of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the middle D part;

[0029] Fig.10 It is a schematic diagram of the material pipe structure of the present invention;

[0030] Fig.11 It is a schematic structural diagram of a partition part of the present invention;

[0031] Fig.12 For the present invention Fig.11 Schematic diagram of the structure of part E in the middle.

[0032] In the figure: 1, injection molding machine; 2, sample mold; 11, material pipe; 12, main drive source; 13, auxiliary drive source; 21, movable mold; 22, fixed mold; 23, cavity; 3, scraper assembly; 4, circulation assembly; 5, transmission member; 6, control assembly; 31, scraper; 41, connecting bin; 42, connecting pipe; 43, partition member; 111, pipe body; 112, nozzle; 14, vertical plate; 221, feed hole; 113, feed bin; 114, feeding auger; 121, driving cylinder; 115, heating device; 431, front partition; 432, side partition; 433, front hole slot; 434, first cylinder; 61, start switch; 62, press plate; 437, side hole slot; 438, transfer member; 4381, roller; 4 382, bearing seat; 4383, tooth groove; 4384, first tooth plate; 4385, support plate; 4386, hinged seat; 4387, baffle; 4388, torsion spring; 131, servo cylinder; 15, load-bearing plate; 16, connecting column; 17, demoulding assembly; 171, push rod; 211, buffer bin; 172, rectangular plate; 173, third cylinder; 51, first gear; 52, second gear; 53, inner groove; 54, movable plate; 55, second tooth plate; 56, fixed seat; 57, fork plate; 58, upper tooth plate; 59, lower tooth plate; 510, transverse groove; 511, sealing plate; 512, third gear; 513, fourth gear; 514, movable plate; 515, fourth tooth plate; 516, fifth tooth plate. DETAILED DESCRIPTION

[0033] 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.

[0034] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an injection molding demolding mechanism and an injection molding mold for a vehicle-mounted display frame.

[0035] See also Figure 1 - Figure 7 , an injection molding demoulding mechanism, an injection mold for a vehicle display frame, comprising an injection molding machine 1, a sample mold 2 installed on the injection molding machine 1, characterized in that: the injection molding machine 1 comprises a material pipe 11, a main driving source 12 and an auxiliary driving source 13, the sample mold 2 comprises a movable mold 21 and a fixed mold 22, a cavity 23 is arranged between the movable mold 21 and the fixed mold 22, a scraping component 3 is arranged on the movable mold 21, a circulation component 4 is installed on the material pipe 11, a transmission member 5 is installed between the movable mold 21 and the fixed mold 22, and a control component 6 is arranged between the movable mold 21 and the circulation component 4;

[0036] The scraping assembly 3 includes a scraper 31. When the auxiliary driving source 13 drives the movable mold 21 to move and separate from the fixed mold 22, the transmission member 5 operates and drives the scraper 31 to move into the cavity 23.

[0037] The circulation component 4 includes a connecting bin 41, a connecting pipe 42 and a partition piece 43. The connecting bin 41 is connected to the output end of the material pipe 11. Both ends of the connecting pipe 42 are fixedly connected to the connecting bin 41 and the material pipe 11 respectively. The partition piece 43 is arranged on the connecting bin 41. After the auxiliary driving source 13 drives the movable mold 21 to move and combine with the fixed mold 22, the control component 6 is operated and drives the partition piece 43 to start, so that the output end of the material pipe 11 is connected to the fixed mold 22 and the connection between the material pipe 11 and the connecting bin 41 is closed. After the injection molding in the sample mold 2 is completed, the control component 6 drives the partition piece 43 to start, so that the output end of the material pipe 11 is closed and the material pipe 11 is connected to the connecting bin 41.

[0038] Specifically, after the auxiliary driving source 13 drives the movable mold 21 to move and combine with the fixed mold 22, the control component 6 is operated and drives the partition member 43 to start, so that the output end of the material tube 11 is connected with the fixed mold 22 and the connection between the material tube 11 and the connecting bin 41 is closed, and then the main driving source 12 drives the plastic in the material tube 11 to be injected into the sample mold 2. When the sample injection is completed, the control component 6 drives the partition member 43 to start, so that the output end of the material tube 11 is closed and the material tube 11 is connected with the connecting bin 41. At this time, the material tube 11 is in a connected state with the connecting bin 41 and the connecting tube 42, so that the molten plastic in the material tube 11 is in a flowing state;

[0039] By setting the circulation component 4, the plastic in the material pipe 11 is in a flowing state, avoiding the problem that the temperature at one end of the material pipe 11 close to the mold is too low, causing the plastic close to the mold to slightly solidify, and solving the problem that the non-flowing molten plastic in the nozzle 112 of the material pipe 11, the temperature at one end close to the mold is too low, causing the plastic close to the mold to slightly solidify, resulting in defects in the mold after the next molding.

[0040] Further, see Fig.10 For the above-mentioned material pipe 11, the material pipe 11 includes a tube body 111 and a nozzle 112, the nozzle 112 is fixedly connected to the connecting bin 41, the injection molding machine 1 is fixedly connected to a vertical plate 14, the fixed mold 22 is fixedly connected to the vertical plate 14, a feed hole 221 is opened on one side of the fixed mold 22, the nozzle 112 is connected to the feed hole 221, a feed bin 113 is installed on the tube body 111, a feeding auger 114 is installed in the tube body 111, the main driving source 12 includes a driving cylinder 121, which drives the feeding auger 114 to move toward the nozzle 112, a heating device 115 is installed outside the tube body 111, and the end of the connecting pipe 42 away from the connecting bin 41 is fixedly connected to the outer periphery of the tube body 111 close to the feeding bin 113;

[0041] Specifically, the granular plastic is transported into the tube body 111 through the feed bin 113, and the granular plastic is converted into molten plastic through the heating device 115, and flows toward the sample mold 2 through the auger. When the movable mold 21 overlaps with the fixed mold 22, the plastic in the tube body 111 flows into the cavity 23 of the sample mold 2 through the nozzle 112.

[0042] Further, see Figure 3 , Fig.11 - Fig.12 For the above circulation assembly 4, the partition member 43 includes a front partition plate 431 and a side partition plate 432. A front hole groove 433 is opened at the top of the outer periphery of the nozzle 112. The front partition plate 431 is slidably arranged in the front hole groove 433 and extends into the nozzle 112. The width of the front partition plate 431 is greater than the diameter width of the nozzle 112. A first cylinder 434 is fixedly connected to the top of the vertical plate 14. The output end of the first cylinder 434 is fixedly connected to the top of the front partition plate 431. The control assembly 6 includes a start switch 61. The start switch 61 is fixedly installed on one side of the vertical plate 14. The start switch 61 It is electrically connected to the first cylinder 434, and a pressing plate 62 is fixedly connected to one side of the movable mold 21, so that when the movable mold 21 and the fixed mold 22 overlap, the pressing plate 62 contacts the start switch 61, and a side hole groove 437 is opened on the top of the connecting chamber 41. The side partition plate 432 is slidably arranged in the side hole groove 437 and extends into the connecting chamber 41. When the bottom surface of the side partition plate 432 contacts the bottom surface of the inner cavity of the connecting chamber 41, the partial surface of the side partition plate 432 arranged in the connecting chamber 41 has the same size as the cross-sectional area of ​​the inner cavity of the connecting chamber 41, and a transfer piece 438 is arranged between the side partition plate 432 and the front partition plate 431;

[0043] The transfer member 438 includes a roller shaft 4381, a bearing seat 4382 is fixedly connected to the top of the connecting chamber 41, both ends of the roller shaft 4381 are rotatably connected to the bearing seat 4382 through bearings, a plurality of tooth grooves 4383 are provided on the periphery of the roller shaft 4381, a first tooth plate 4384 is fixedly connected to one side of the side partition 432, the first tooth plate 4384 is meshed with the tooth grooves 4383, a support plate 4385 is fixedly connected to one side of the front partition 431, and the support plate 4385 is connected to the front partition 431. They are perpendicular to each other. A plurality of hinge seats 4386 are fixedly connected to one side of the support plate 4385. A baffle plate 4387 is provided on one side of the hinge seat 4386. The top of the baffle plate 4387 near one end of the support plate 4385 is set at a right angle. The bottom of the baffle plate 4387 near one end of the support plate 4385 is set in an arc shape. The baffle plate 4387 is movably hinged with the hinge seat 4386. A torsion spring 4388 is installed at the hinge between the baffle plate 4387 and the hinge seat 4386. The baffle plate 4387 is meshed with the tooth groove 4383.

[0044] Specifically, when the movable mold 21 moves toward the fixed mold 22 and overlaps with the fixed mold 22, the pressing plate 62 on one side of the movable mold 21 contacts the starting switch 61 and drives the first cylinder 434 to operate. The first cylinder 434 drives the front baffle plate 431 to move upward, so that the nozzle 112 is connected with the feed hole 221. When the front baffle plate 431 moves upward, the front baffle plate 431 drives the support plate 4385 and the baffle plate 4387 on one side of the support plate 4385 to move upward. Through the meshing between the baffle plate 4387 and the tooth groove 4383, the roller shaft 4381 is rotated, so that the meshing connection between the first tooth plate 4384 and the tooth groove 4383 is achieved. The movable side partition 432 moves downward, but at this time the bottom of the side partition 432 coincides with the bottom of the inner cavity of the connecting chamber 41, so that the side partition 432 cannot move downward. At this time, through the movable hinge between the baffle 4387 and the hinge seat 4386, and the arc-shaped bottom of the baffle 4387 close to the support plate 4385, when the front partition 431 moves upward, the baffle 4387 contacts the inner side of the tooth groove 4383. Since the roller shaft 4381 is affected by the side partition 432 and cannot rotate, the baffle 4387 rotates, and the torsion spring 4388 is squeezed. When the baffle 4387 is out of the tooth groove 4383, the torsion spring 4388 is squeezed. 4388 recovers its elasticity and drives the baffle 4387 to reset. When the injection molding in the cavity 23 is completed, the first cylinder 434 drives the front baffle 431 to move downward, so as to seal the nozzle 112 and the feed hole 221. When the front baffle 431 moves downward, the front baffle 431 drives the support plate 4385 and the baffle 4387 on one side of the support plate 4385 to move downward. Through the engagement between the baffle 4387 and the tooth groove 4383, the movable hinge between the baffle 4387 and the hinge seat 4386, and the setting of the top of the baffle 4387 close to the support plate 4385 at a right angle, when the front baffle 431 moves downward, the baffle 4387 It contacts the inner side surface of the tooth groove 4383 and drives the roller 4381 to rotate. Through the meshing connection between the roller 4381 and the first tooth plate 4384, the side partition 432 moves upward, so that the connecting bin 41 and the material pipe 11 are connected, so that the molten plastic in the material pipe 11 slowly flows into the connecting bin 41 and the connecting pipe 42, thereby ensuring that the temperature of the molten plastic at the nozzle 112 remains unchanged, thereby solving the problem that the non-flowing molten plastic in the nozzle 112 of the material pipe 11 has a low temperature at one end close to the mold, causing the plastic close to the mold to solidify slightly, resulting in defects in the mold after the next molding.

[0045] Further, see Figure 4 - Figure 5For the sample mold 2, the auxiliary driving source 13 includes a servo cylinder 131, which is fixedly connected to the injection molding machine 1. A bearing plate 15 is slidably provided on the injection molding machine 1. The output end of the servo cylinder 131 is fixedly connected to the bearing plate 15. The four corners of one side of the bearing plate 15 are fixedly connected with connecting columns 16. The connecting columns 16 are fixedly connected to the four corners of one side of the movable mold 21. A demolding assembly 17 is provided on one side of the movable mold 21. The demolding assembly 17 includes four push rods 171. The four push rods 171 are fixedly connected to the four corners of one side of the movable mold 21. 71 is arranged at the four corners of one side of the movable mold 21, and round holes are opened at the four corners of one side of the movable mold 21. The push rod 171 is slidably arranged in the round holes. The four corners of the movable mold 21 close to the fixed mold 22 are provided with buffer bins 211, and the buffer bins 211 are communicated with the cavity 23. The push rod 171 extends into the buffer bin 211. A rectangular plate 172 is fixedly connected to one side of the push rod 171, and a third cylinder 173 is fixedly connected to one side of the rectangular plate 172. The output end of the third cylinder 173 is fixedly connected to the rectangular plate 172.

[0046] Specifically, the servo cylinder 131 drives the load-bearing plate 15 and the movable mold 21 on one side to move. When the sample in the sample mold 2 is cooled, the servo cylinder 131 drives the movable mold 21 to separate from the fixed mold 22. When the movable mold 21 moves to the specified position, the third cylinder 173 is started and drives the rectangular plate 172 and the push rod 171 on one side of the rectangular plate 172 to move into the buffer bin 211, thereby pushing the sample on one side of the movable mold 21 outward. By setting a plurality of buffer bins 211 at the connection between the movable mold 21 and the cavity 23, and extending one end of the push rod 171 to the buffer bin 211, the sample in the buffer bin 211 will not be damaged during demolding regardless of whether it is cooled or not, so as to avoid the viscous sample adhering to the scraper 31 and the push rod 171 when the sample in the buffer bin 211 is not effectively cooled, and wire drawing occurs between the sample and the scraper 31 or the push rod 171 during demolding, thereby causing the problem of damaged sample appearance.

[0047] Further, see Figure 6 - Fig. 9For the transmission member 5, the transmission member 5 includes a first gear 51 and a second gear 52. The top and bottom of the fixed mold 22 are both provided with inner grooves 53, and the inner grooves 53 are communicated with the buffer bin 211. The scraper 31 is slidably arranged in the inner groove 53. The top of the scraper 31 is fixedly connected with a movable plate 54, and the movable plate 54 is slidably arranged in the inner groove 53. A second tooth plate 55 is fixedly connected to one side of the movable plate 54. The top and bottom of the movable mold 21 are both fixedly connected with a fixed seat 56. The first gear 51 is connected to the fixed seat through a bearing. The seat 56 is rotatably connected, the second gear 52 is fixed between the two first gears 51, the second tooth plate 55 is meshed with the second gear 52, both ends of one side of the vertical plate 14 are fixedly connected with a forked plate 57, the bottom of the upper half of the forked plate 57 is fixedly connected with an upper tooth plate 58, the upper tooth plate 58 is meshed with the first gear 51, the top of the lower half of the forked plate 57 is fixedly connected with a lower tooth plate 59, the lower tooth plate 59 is meshed with the first gear 51, and the front end of the upper tooth plate 58 is close to the rear end of the lower tooth plate 59;

[0048] Transverse grooves 510 are provided on both sides of the movable mold 21, and the transverse grooves 510 are connected to the bottom of the inner groove 53. A sealing plate 511 is slidably connected in the transverse grooves 510, and the sealing plate 511 is arranged at the connection between the inner groove 53 and the buffer bin 211. Third gears 512 are rotatably connected to both sides of the movable mold 21 through bearings, and a fourth gear 513 is fixedly connected between the two third gears 512. A movable plate 514 is fixedly connected to one side of the movable plate 54, and a fourth tooth plate 515 is fixedly connected to one side of the movable plate 514. The fourth tooth plate 515 is meshed with the fourth gear 513. A fifth tooth plate 516 is fixedly connected to the top of the sealing plate 511, and the fifth tooth plate 516 is meshed with the third gear 512.

[0049] Specifically, after the sample in the sample mold 2 is cooled, the movable mold 21 is separated from the fixed mold 22. When the movable mold 21 moves away from the fixed mold 22, the first gear 51 meshes with the upper tooth plate 58 on the upper side of the bifurcated plate 57, and causes the second gear 52 fixedly connected to the first gear 51 to rotate. Through the meshing connection between the second gear 52 and the second tooth plate 55 on one side of the movable plate 54, the movable plate 54 is driven to move downward, thereby driving the scraper 31 to move downward in the inner groove 53. During the downward movement of the movable plate 54, the movable plate 514 is driven to move downward, and through the meshing connection between the fourth tooth plate 515 on one side of the movable plate 514 and the fourth gear 513, the fourth gear 513 is driven to rotate, thereby driving the third gear 512 fixedly connected to the fourth gear 513 to rotate, and through the meshing connection between the third gear 512 and the fifth tooth plate 516, the sealing plate 511 fixedly connected to the fifth tooth plate 516 is driven to move away from the inner groove 53 and the buffer bin 211. The movable mold 21 moves in the direction of the connection between them, thereby connecting the inner groove 53 with the buffer bin 211 and avoiding contact between the scraper 31 and the sealing plate 511. At this time, the scraper 31 continues to move downward and cuts the connection between the sample and the push rod 171, thereby avoiding adhesion between the sample and the push rod 171, solving the problem that when the part between the sample and the push rod 171 cannot be effectively cooled, part of the molten plastic adheres to the ejector rod after the mold is demolded, and when the next mold is cooled, the plastic adhered to the ejector rod will cause defects on the surface of the next mold. During the continuous movement of the movable mold 21, the first gear 51 is separated from the upper tooth plate 58 on the upper side of the fork plate 57, and meshed with the lower tooth plate 59 on the lower side of the fork plate 57, thereby driving the roller 4381 to rotate in the opposite direction, thereby resetting the scraper 31 and the sealing plate 511. The setting of the sealing plate 511 can prevent the molten plastic in the cavity 23 and the buffer bin 211 from flowing into the inner groove 53.

[0050] Working principle: When in use, the servo cylinder 131 drives the load-bearing plate 15 and the movable mold 21 on one side to move toward the fixed mold 22 and overlap with the fixed mold 22, the pressing plate 62 on one side of the movable mold 21 contacts the start switch 61 and drives the first cylinder 434 to operate, and the first cylinder 434 drives the front baffle 431 to move upward, so that the nozzle 112 is connected with the feed hole 221. When the front baffle 431 moves upward, the front baffle 431 drives the support plate 4385 and the baffle 4387 on one side of the support plate 4385 to move upward, and the engagement between the baffle 4387 and the tooth groove 4383 will make The roller shaft 4381 rotates, thereby driving the side partition plate 432 to move downward through the meshing connection between the first tooth plate 4384 and the tooth groove 4383. However, at this time, the bottom of the side partition plate 432 coincides with the bottom of the inner cavity of the connecting chamber 41, so that the side partition plate 432 cannot move downward. At this time, through the movable hinge between the baffle plate 4387 and the hinge seat 4386, and the arc-shaped bottom of the baffle plate 4387 close to the support plate 4385, when the front partition plate 431 moves upward, the baffle plate 4387 contacts the inner side of the tooth groove 4383. Since the roller shaft 4381 is affected by the side partition plate 432 and cannot The baffle plate 4387 rotates, and the torsion spring 4388 is squeezed. When the baffle plate 4387 is out of the tooth groove 4383, the torsion spring 4388 recovers its elasticity and drives the baffle plate 4387 to reset. When the injection molding in the cavity 23 is completed, the first cylinder 434 drives the front baffle plate 431 to move downward, thereby sealing the nozzle 112 and the feed hole 221. When the front baffle plate 431 moves downward, the front baffle plate 431 drives the support plate 4385 and the baffle plate 4387 on one side of the support plate 4385 to move downward. Through the meshing between the baffle plate 4387 and the tooth groove 4383, the baffle plate 4387 The movable hinge between the hinge seat 4386 and the top of the baffle plate 4387 close to the support plate 4385 is set at a right angle, so that when the front baffle plate 431 moves downward, the baffle plate 4387 contacts the inner side of the tooth groove 4383 and drives the roller shaft 4381 to rotate. Through the meshing connection between the roller shaft 4381 and the first tooth plate 4384, the side baffle plate 432 moves upward, thereby connecting the connecting bin 41 and the material pipe 11, so that the molten plastic in the material pipe 11 slowly flows into the connecting bin 41 and the connecting pipe 42, thereby ensuring that the temperature of the molten plastic at the nozzle 112 remains unchanged;

[0051] When the sample in the sample mold 2 is cooled, the servo cylinder 131 drives the movable mold 21 to separate from the fixed mold 22. When the movable mold 21 moves away from the fixed mold 22, the first gear 51 meshes with the upper tooth plate 58 on the upper side of the bifurcation plate 57, and causes the second gear 52 fixedly connected to the first gear 51 to rotate. Through the meshing connection between the second gear 52 and the second tooth plate 55 on one side of the movable plate 54, the movable plate 54 is driven to move downward, thereby driving the scraper 31 to move downward in the inner groove 53. During the downward movement of the movable plate 54, the movable plate 514 is driven to move downward. Through the meshing connection between the fourth tooth plate 515 on one side of the movable plate 514 and the fourth gear 513, the fourth gear 513 is driven to rotate, thereby driving the third gear 512 fixedly connected to the fourth gear 513 to rotate. Through the meshing connection between the third gear 512 and the fifth tooth plate 516, the third gear 512 fixedly connected to the fifth tooth plate 516 is driven to rotate. The sealing plate 511 connected to the mold moves in a direction away from the connection between the inner groove 53 and the buffer bin 211, so that the inner groove 53 is connected to the buffer bin 211 and the contact between the scraper 31 and the sealing plate 511 is avoided. At this time, the scraper 31 continues to move downward and cuts the connection between the sample and the push rod 171, so as to avoid the adhesion between the sample and the push rod 171. This solves the problem that when the part between the sample and the push rod 171 cannot be effectively cooled, part of the molten plastic adheres to the ejector rod after the mold is demolded. When the next mold is cooled, the plastic adhered to the ejector rod will cause defects on the surface of the next mold. During the continuous movement of the movable mold 21, the first gear 51 separates from the upper tooth plate 58 on the upper side of the fork plate 57 and meshes with the lower tooth plate 59 on the lower side of the fork plate 57, thereby driving the roller 4381 to rotate in the opposite direction, thereby resetting the scraper 31 and the sealing plate 511.

[0052] When the movable mold 21 moves to the designated position, the third cylinder 173 is started and drives the rectangular plate 172 and the push rod 171 on one side of the rectangular plate 172 to move into the buffer bin 211, thereby pushing the sample on one side of the movable mold 21 outward, thereby completing the sample demolding.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molding demoulding mechanism, comprising an injection molding machine (1) and a sample mold (2) mounted on the injection molding machine (1), characterized in that: The injection molding machine (1) comprises a material pipe (11), a main driving source (12) and an auxiliary driving source (13); the sample mold (2) comprises a movable mold (21) and a fixed mold (22); a cavity (23) is arranged between the movable mold (21) and the fixed mold (22); a scraping assembly (3) is arranged on the movable mold (21); a circulation assembly (4) is installed on the material pipe (11); a transmission member (5) is installed between the movable mold (21) and the fixed mold (22); and a control assembly (6) is arranged between the movable mold (21) and the circulation assembly (4); The scraping assembly (3) comprises a scraper (31), and when the auxiliary driving source (13) drives the movable mold (21) to move and separate from the fixed mold (22), the transmission member (5) operates and drives the scraper (31) to move into the mold cavity (23); The circulation component (4) comprises a connecting bin (41), a connecting pipe (42) and a partition member (43); the connecting bin (41) is connected to the output end of the material pipe (11); the two ends of the connecting pipe (42) are respectively fixedly connected to the connecting bin (41) and the material pipe (11); the partition member (43) is arranged on the connecting bin (41); after the auxiliary driving source (13) drives the movable mold (21) to move and combine with the fixed mold (22), the control component (6) operates and drives the partition member (43) to start, so that the output end of the material pipe (11) is connected to the fixed mold (22) and the connection between the material pipe (11) and the connecting bin (41) is closed; after the injection molding in the sample mold (2) is completed, the control component (6) drives the partition member (43) to start, so that the output end of the material pipe (11) is closed and the material pipe (11) is connected to the connecting bin (41).

2. The injection molding demoulding mechanism according to claim 1, characterized in that: The material pipe (11) comprises a pipe body (111) and a nozzle (112); the nozzle (112) is fixedly connected to the connection chamber (41); a vertical plate (14) is fixedly connected to the injection molding machine (1); the fixed mold (22) is fixedly connected to the vertical plate (14); a feed hole (221) is provided on one side of the fixed mold (22); the nozzle (112) is connected to the feed hole (221); a feed port (221) is installed on the pipe body (111); The tube body (111) is provided with a feeding auger (114), the main driving source (12) comprises a driving cylinder (121) for driving the feeding auger (114) to move in the direction of the nozzle (112), a heating device (115) is installed outside the tube body (111), and the end of the connecting pipe (42) away from the connecting bin (41) is fixedly connected to the outer periphery of the tube body (111) close to the feeding bin (113).

3. The injection molding demoulding mechanism according to claim 2, characterized in that: The partition member (43) comprises a front partition plate (431) and a side partition plate (432); a front hole groove (433) is provided at the top of the outer periphery of the nozzle (112); the front partition plate (431) is slidably arranged in the front hole groove (433) and extends into the nozzle (112); the width of the front partition plate (431) is greater than the diameter width of the nozzle (112); a first cylinder (434) is fixedly connected to the top of the vertical plate (14); an output end of the first cylinder (434) is fixedly connected to the top of the front partition plate (431); the control component (6) comprises a start switch (61); the start switch (61) is fixedly mounted on one side of the vertical plate (14); the start switch (61) is connected to the first cylinder ( 434), a pressing plate (62) is fixedly connected to one side of the movable mold (21), so that when the movable mold (21) and the fixed mold (22) overlap, the pressing plate (62) contacts the starting switch (61), a side hole groove (437) is opened on the top of the connecting chamber (41), the side partition plate (432) is slidably arranged in the side hole groove (437) and extends into the connecting chamber (41), when the bottom surface of the side partition plate (432) contacts the bottom surface of the inner cavity of the connecting chamber (41), the partial surface of the side partition plate (432) arranged in the connecting chamber (41) is the same as the cross-sectional size of the inner cavity of the connecting chamber (41), and a transfer piece (438) is arranged between the side partition plate (432) and the front partition plate (431).

4. The injection molding demoulding mechanism according to claim 3, characterized in that: The transfer member (438) includes a roller shaft (4381), a bearing seat (4382) is fixedly connected to the top of the connection bin (41), both ends of the roller shaft (4381) are rotatably connected to the bearing seat (4382) through bearings, a plurality of tooth grooves (4383) are provided on the outer circumference of the roller shaft (4381), a first tooth plate (4384) is fixedly connected to one side of the side partition plate (432), the first tooth plate (4384) is meshed with the tooth grooves (4383), a support plate (4385) is fixedly connected to one side of the front partition plate (431), the support plate (4385) is connected to the front partition plate (431), and the support plate (4385) is connected to the front partition plate (431). ) are perpendicular to each other, a plurality of hinge seats (4386) are fixedly connected to one side of the support plate (4385), a baffle (4387) is provided on one side of the hinge seat (4386), the top of the baffle (4387) close to one end of the support plate (4385) is set to a right angle, the bottom of the baffle (4387) close to one end of the support plate (4385) is set to an arc, the baffle (4387) is movably hinged to the hinge seat (4386), a torsion spring (4388) is installed at the hinge between the baffle (4387) and the hinge seat (4386), and the baffle (4387) is engaged with the tooth groove (4383).

5. The injection molding demoulding mechanism according to claim 4, characterized in that: The auxiliary driving source (13) comprises a servo cylinder (131), the servo cylinder (131) is fixedly connected to the injection molding machine (1), a bearing plate (15) is slidably provided on the injection molding machine (1), an output end of the servo cylinder (131) is fixedly connected to the bearing plate (15), four corners of one side of the bearing plate (15) are fixedly connected to connecting columns (16), the connecting columns (16) are fixedly connected to four corners of one side of the movable mold (21), a demoulding assembly (17) is provided on one side of the movable mold (21), the demoulding assembly (17) comprises four push rods (171), and the four push rods (171) are provided on the movable mold (21). At four corners of one side of the mold (21), circular holes are provided at the four corners of one side of the movable mold (21), the push rod (171) is slidably arranged in the circular holes, and at four corners of one side of the movable mold (21) close to the fixed mold (22), buffer bins (211) are provided, the buffer bins (211) are communicated with the mold cavity (23), the push rod (171) extends into the buffer bin (211), one side of the push rod (171) is fixedly connected to a rectangular plate (172), one side of the rectangular plate (172) is fixedly connected to a third cylinder (173), and an output end of the third cylinder (173) is fixedly connected to the rectangular plate (172).

6. The injection molding demoulding mechanism according to claim 5, characterized in that: The transmission member (5) comprises a first gear (51) and a second gear (52); the top and bottom of the fixed mold (22) are both provided with inner grooves (53); the inner grooves (53) are communicated with the buffer bin (211); the scraper (31) is slidably arranged in the inner groove (53); the top of the scraper (31) is fixedly connected with a movable plate (54); the movable plate (54) is slidably arranged in the inner groove (53); one side of the movable plate (54) is fixedly connected with a second tooth plate (55); the top and bottom of the movable mold (21) are both fixedly connected with a fixed seat (56); the first gear (51) is connected to the fixed seat (56) through a bearing. The second gear (52) is fixedly arranged between the two first gears (51), the second tooth plate (55) is meshingly connected with the second gear (52), both ends of one side of the vertical plate (14) are fixedly connected with a forked plate (57), the bottom of the upper half of the forked plate (57) is fixedly connected with an upper tooth plate (58), the upper tooth plate (58) is meshingly connected with the first gear (51), the top of the lower half of the forked plate (57) is fixedly connected with a lower tooth plate (59), the lower tooth plate (59) is meshingly connected with the first gear (51), and the front end of the upper tooth plate (58) is close to the rear end of the lower tooth plate (59).

7. The injection molding demoulding mechanism according to claim 6, characterized in that: The movable mold (21) has transverse grooves (510) on both sides, the transverse grooves (510) are connected to the bottom of the inner groove (53), a sealing plate (511) is slidably connected in the transverse groove (510), and the sealing plate (511) is arranged at the connection between the inner groove (53) and the buffer bin (211), the movable mold (21) has third gears (512) rotatably connected on both sides through bearings, a fourth gear (513) is fixedly connected between the two third gears (512), one side of the movable plate (54) is fixedly connected to a moving plate (514), one side of the moving plate (514) is fixedly connected to a fourth tooth plate (515), the fourth tooth plate (515) is meshingly connected to the fourth gear (513), and the top of the sealing plate (511) is fixedly connected to a fifth tooth plate (516), the fifth tooth plate (516) is meshingly connected to the third gear (512).

8. An injection mold for a vehicle display frame, characterized in that: An injection molding demoulding mechanism as described in any one of claims 1 to 7 is used.

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