A plastic injection molding apparatus

Abstract

The application belongs to the field of plastic injection molding, and particularly relates to a plastic injection molding equipment, which comprises a support, a conveying mechanism, an injection molding mechanism, a laser cutting device and a hot-pressing packaging mechanism, wherein the support is sequentially provided with the injection molding mechanism, the laser cutting device and the hot-pressing packaging mechanism according to the process sequence, and is provided with the conveying mechanism which transmits three pairs of sequentially connected half-ring plastic barrels demolded from the injection molding mechanism to the laser cutting device below in a transverse sequence for cutting and separation, and then transmits the cut and separated plastic barrels to the hot-pressing packaging mechanism for plastic sealing and packaging. The application can realize plastic sealing and packaging of the cut and separated plastic barrels without screening, so as to optimize the injection molding process, reduce the number of injection molding related equipment and lower the injection molding cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of plastic injection molding, and particularly relates to a plastic injection molding equipment. BACKGROUND

[0002] The plastic injection molding equipment includes a mold pouring device, a demolding device, a transmission cutting device, a screening device and a packaging device, and the required equipment types are many and the cost is high.

[0003] The existing mold includes two parts, i.e., an upper mold and a lower mold. When a larger injection molding pressure needs to be borne, the fixing strength of the upper and lower molds must be increased, which will result in an increase in the weight of the mold.

[0004] The injection molding equipment designed in the application can realize automatic demolding of a molded product by separate actions of the mold, and can realize sequencing of the molded product by designing a transmission device and a packaging device, and can package the molded product after cutting without screening, so that the injection molding process is optimized, the number of injection molding related equipment is reduced, and the injection molding cost is reduced.

[0005] The injection molding equipment designed in the application can realize automatic demolding of a molded product by separate actions of the mold, and can realize sequencing of the molded product by designing a transmission device and a packaging device, and can package the molded product after cutting without screening, so that the injection molding process is optimized, the number of injection molding related equipment is reduced, and the injection molding cost is reduced. SUMMARY

[0006] To solve the defects in the prior art, the application discloses a plastic injection molding equipment, which is implemented by using the following technical scheme.

[0007] The plastic injection molding equipment includes a support, a conveying mechanism, an injection molding mechanism, a laser cutting device and a hot-press packaging mechanism, wherein the injection molding mechanism, the laser cutting device and the hot-press packaging mechanism are sequentially installed on the support according to the working procedure, and the conveying mechanism is installed to convey three pairs of sequentially connected half-ring plastic barrels demolded from the injection molding mechanism to the laser cutting device below in a transverse sequencing manner for cutting and separation, and then convey the cut and separated plastic barrels to the hot-press packaging mechanism for plastic packaging.

[0008] The injection molding mechanism includes a fixed seat, a fixed mold, a movable mold, a spring B and an electric push rod, wherein the fixed mold is fixedly installed in the n-shaped fixed seat of the support, the movable mold is movably installed in the fixed seat and driven by the electric push rod, and the spring B is installed to reset the movable mold; three pairs of half-round mold grooves on both sides of the movable mold and three pairs of half-round mold protrusions in the fixed mold groove form three pairs of half-ring mold cavities in the combined state of the movable mold and the fixed mold; the movable mold has a structure for forming a pouring groove between any two adjacent mold cavities on each side; the movable mold has a vertical injection port A with a half-round cross section at the lower end thereof, and the vertical injection port A is communicated with the end mold grooves on both sides through a horizontal injection port B with a half-round cross section; and the fixed mold has a structure for separating the plastic strip formed in the injection port A from the connecting strips formed in the two injection ports B.

[0009] The hot-pressing packaging mechanism comprises a packaging groove, hot-melt blocks, motor B, a support plate, a swing shaft, and motor C, wherein two n-shaped hot-melt blocks driven synchronously by two motors B are horizontally slid in two grooves G on the two side walls of the packaging groove, and the support plate supporting the plastic cylinder is installed at the bottom of the packaging groove through the swing shaft driven by motor C.

[0010] As a further improvement of the present technology, a sliding rod with a pouring groove at the end is slid in the sliding slot D between any two adjacent die slots on each side of the movable die, a connecting rod is hinged at one end of the sliding rod, and the connecting rod is hinged with a pull rod slid in the sliding slot F at one end of the movable die; a spring A is nested on the pull rod to reset it; the pull rod is slid in the sliding slot B on the fixed seat and is driven by the electric push rod.

[0011] As a further improvement of the present technology, a batten B cooperating with the sliding slot C on the inner wall of the insertion slot is installed at the end of the pull rod, the batten B is slid in the sliding slot E on the movable die; the batten B has a cutting hole corresponding to the injection port A; the inner wall of the cutting hole has a sharp blade.

[0012] As a further improvement of the present technology, the conveying mechanism comprises a transmission belt A, a transmission belt B, and a motor A, wherein two symmetrical transmission belts A installed on the support form a herringbone state that makes two parts of three pairs of plastic cylinders naturally sag to both sides when demoulded from the injection molding mechanism, and form a horizontal transmission state that makes three pairs of plastic cylinders in transverse order at the end; the transmission belt B located below the laser cutting device and the horizontal sections of the two transmission belts A form a link; the transmission belt B and the two transmission belts A are synchronously driven by the motor A.

[0013] As a further improvement of the present technology, gears A are installed on the roller shaft where the roller of the transmission belt A is located and the roller shaft where the roller of the initial section of the transmission belt B is located, two gears A simultaneously mesh with gear B on the support; gear B meshes with gear C on the output shaft of motor A.

[0014] As a further improvement of the present technology, a smooth batten A is fixed on the support to shield the gap formed by the herringbone of the initial sections of the two transmission belts A.

[0015] As a further improvement of the present technology, two racks are symmetrically installed on each of the two hot-melt blocks, the two racks on the same side of the two hot-melt blocks mesh with gear D on the output shaft of motor B on the side wall of the packaging groove; gear E installed on the swing shaft meshes with gear F on the output shaft of motor C on the side wall of the packaging groove.

[0016] As a further improvement of the present technology, a collection box for collecting packaged plastic cylinders is provided below the packaging groove.

[0017] Compared with the traditional plastic injection equipment, the injection mechanism in the application can make the plastic cylinder automatically demould under the slight driving of the movable die after the separation of the movable die and the fixed die, and the structure characteristics of the transmission mechanism can make the six plastic cylinders demould from the injection mechanism finally move to the laser cutting equipment below in the transverse order for cutting separation, the application can package the plastic cylinders after cutting separation without screening, so as to achieve the purpose of optimizing the injection process, reducing the number of injection related equipment and reducing the injection cost.

[0018] The cooperation mode between the movable die and the fixed die in the application is horizontal plug-in cooperation, and the trapezoidal slot of the movable die cooperates with the fixed die, the separation force of the movable die and the fixed die caused by the injection pressure is very small, so that the effective cooperation between the movable die and the fixed die can be ensured under the condition that the fixed strength of the movable die and the fixed die is small, and the quality of the movable die and the fixed die is not increased due to the increase of the fixed strength caused by bearing the large injection pressure, and the mold cost is reduced.

[0019] The application has simple structure and good use effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the schematic diagram of two perspectives of the application.

[0021] Figure 2 is the overall cross-sectional schematic diagram of the application.

[0022] Figure 3 is the cross-sectional schematic diagram of the cooperation of the application and the plastic cylinder.

[0023] Figure 4 is the cross-sectional schematic diagram of the injection mechanism and two perspectives thereof.

[0024] Figure 5 is the cross-sectional schematic diagram of the cooperation of the movable die and the fixed die.

[0025] Figure 6 is the cross-sectional schematic diagram of the cooperation of the movable die, the fixed die and the batten B.

[0026] Figure 7 is the schematic diagram of the fixed seat and the fixed die.

[0027] Figure 8 is the schematic diagram of two perspectives of the movable die.

[0028] Figure 9 is the cooperation schematic diagram of the support, the transmission belt A and the transmission belt B.

[0029] Figure 10 is the driving structure schematic diagram of the transmission belt A and the transmission belt B.

[0030] Figure 11is a schematic view of the heat-press packaging mechanism and its two perspective views.

[0031] Figure 12 is a schematic view of the packaging groove.

[0032] Figure 13 is a schematic view of the plastic cylinder.

[0033] Figure label name: 1, support; 2, conveying belt A; 3, conveying belt B; 4, gear A; 5, gear B; 6, gear C; 7, motor A; 8, board A; 9, injection molding mechanism; 10, fixed seat; 11, chute A; 12, chute B; 13, fixed mold; 14, insertion slot; 15, limiting groove; 16, chute C; 17, mold convex; 18, movable mold; 19, mold groove; 20, chute D; 21, limiting strip; 22, injection port A; 23, injection port B; 24, chute E; 25, chute F; 26, pull rod; 27, spring A; 28, compression spring ring; 29, connecting rod; 30, sliding rod; 31, pouring groove; 32, board B; 33, cutting hole; 34, mold cavity; 36, guide rod; 37, spring B; 38, electric push rod; 39, trapezoidal guide block; 40, supporting plate; 41, trapezoidal guide groove; 42, laser cutting device; 43, heat-press packaging mechanism; 44, packaging groove; 45, chute G; 46, hot melting block; 47, rack; 48, gear D; 49, motor B; 50, support plate; 51, swing shaft; 52, gear E; 53, gear F; 54, motor C; 55, plastic cylinder; 56, connecting strip; 57, plastic cloth; 58, collection box; 59, conveying mechanism. DETAILED DESCRIPTION

[0034] The drawings are schematic views of the implementation of the present application, so as to facilitate the understanding of the operation principle of the structure. The specific product structure and scale size can be determined according to the use environment combined with conventional technology.

[0035] As shown in Figure 1 , 2 , it comprises a support 1, a conveying mechanism 59, an injection molding mechanism 9, a laser cutting device 42, and a heat-press packaging mechanism 43, wherein, as shown in Figure 2 , 3 , 13, the injection molding mechanism 9, the laser cutting device 42, and the heat-press packaging mechanism 43 are sequentially installed on the support 1 according to the process sequence, and the conveying mechanism 59 for transmitting the three pairs of sequentially connected half-ring plastic cylinders 55 demolded from the injection molding mechanism 9 to the laser cutting device 42 below for cutting and separation, and then transmitting the cut and separated plastic cylinders 55 to the heat-press packaging mechanism 43 for plastic packaging is installed.

[0036] As shown in Figure 4 , the injection molding mechanism 9 comprises a fixed seat 10, a fixed mold 13, a movable mold 18, a spring B 37, and an electric push rod 38, wherein, as shown in Figure 2 , the fixed seat 10 is installed on the support 1, the fixed mold 13 is installed on the fixed seat 10, the movable mold 18 is installed on the fixed mold 13, the spring B 37 is installed on the fixed mold 13, and the electric push rod 38 is installed on the movable mold 18., 4 As shown in Figure 6, a fixed mold 13 is installed in an n-shaped fixing seat 10 fixed to the bracket 1. A moving mold 18, which is horizontally movable within the fixing seat 10 and engages with the trapezoidal slot 14 at the lower end of the fixed mold 13, is driven by an electric push rod 38 and is equipped with a spring B37 for resetting the moving mold 18; Figure 5 , 7 As shown in Figure 8, the three pairs of semi-circular mold grooves 19 on both sides of the moving mold 18 and the three pairs of semi-circular mold protrusions 17 on both sides of the slot 14 of the fixed mold 13 form three pairs of semi-annular mold cavities 34 when the moving mold 18 and the fixed mold 13 are closed; the moving mold 18 has a structure that forms a casting groove 31 between any two adjacent mold cavities 34 on each side; as shown in Figure 8. Figure 5 , 6 As shown in Figure 8, the moving mold 18 has a vertical injection port A22 with a semi-circular cross-section that is connected to its lower end and to the mold grooves 19 on both sides through a horizontal injection port B23. The cross-section of the injection port B23 is a semi-circular shape that is connected to the end of the moving mold 18. The fixed mold 13 has a structure that separates the plastic strip formed in the injection port A22 from the connecting strip 56 formed in the two injection ports B23.

[0037] like Figure 11 As shown, the hot-press packaging mechanism 43 includes a packaging tank 44, a hot-melt block 46, a motor B49, a support plate 50, a swing shaft 51, and a motor C54, wherein... Figure 1 , 2 As shown, two n-shaped hot melt blocks 46, driven synchronously by two motors B49, slide horizontally in opposite directions or in opposite directions within two sliding grooves G45 on the two side walls of the packaging tank 44. A support plate 50 supporting a plastic cylinder 55 is installed at the bottom of the packaging tank 44 via a swing shaft 51 driven by a motor C54.

[0038] like Figure 5 , 8 As shown, a sliding rod 30 with a casting groove 31 at its end slides within the sliding groove D20 between any two adjacent mold slots 19 on each side of the moving mold 18. One end of the sliding rod 30 is hinged to a connecting rod 29, which is hinged to a pull rod 26 sliding within the sliding groove F25 at one end of the moving mold 18. A spring A27 for resetting the pull rod 26 is nested on the pull rod 26. Figure 4 , 7 As shown, the pull rod 26 slides in the groove B12 on the fixed base 10 and is driven by the electric push rod 38.

[0039] like Figure 2 , 6 As shown in Figure 7, the end of the pull rod 26 is fitted with a strip B32 that mates with the sliding groove C16 on the inner wall of the slot 14; Figure 2 , 8As shown, the slat B32 slides in the sliding groove E24 on the movable mold 18; the slat B32 has a cutting hole 33 corresponding to the injection port A22; the inner wall of the cutting hole 33 has a sharp edge, which ensures that the plastic strip formed by the injection port A22 is cut off by the slat B32 driven by the pull rod 26 during the separation of the movable mold 18 from the fixed mold 13, so that the six plastic barrels 55 formed in the six mold cavities 34 can be smoothly demolded.

[0040] As shown in Figure 9 , 10 , the conveyor 59 includes a transmission belt A2, a transmission belt B3, and a motor A7, wherein, as shown in Figure 9 , the two symmetrical transmission belts A2 mounted on the support 1 form a herringbone shape at the initial section, which allows the two parts of the three pairs of plastic barrels 55 demolded from the injection mechanism 9 to naturally sag to both sides, and form a horizontal transmission state at the end, which allows the three pairs of plastic barrels 55 to be arranged horizontally; as shown in Figure 9 , 10 , the transmission belt B3 mounted on the support 1 below the laser cutting device 42 is connected with the horizontal section of the two transmission belts A2; the transmission belt B3 and the two transmission belts A2 are synchronously driven by the motor A7.

[0041] As shown in Figure 10 , the roller shaft where the end roller of the transmission belt A2 is located and the roller shaft where the initial section roller of the transmission belt B3 is located are both provided with a gear A4, and the two gears A4 are simultaneously engaged with a gear B5 on the support 1; the gear B5 is engaged with a gear C6 on the output shaft of the motor A7.

[0042] As shown in Figure 9 , 10 , the support 1 is fixed with a smooth slat A8 that blocks the gap formed by the herringbone shape of the two initial sections of the two transmission belts A2, so that the plastic strip generated by the injection port A22 on the six half-ring plastic barrels 55 falling from the injection mechanism 9 enters the gap between the two transmission belts A2.

[0043] As shown in Figure 11 , two racks 47 are symmetrically mounted on the two hot melt blocks 46, and the two racks 47 on the same side of the two hot melt blocks 46 are engaged with a gear D48 on the output shaft of the motor B49 on the side wall of the packaging groove 44; a gear E52 mounted on the swing shaft 51 is engaged with a gear F53 on the output shaft of the motor C54 on the side wall of the packaging groove 44.

[0044] As shown in Figure 1 , 2 , the packaging groove 44 is provided below with a collection box 58 for collecting the packaged plastic barrels 55.

[0045] As shown in Figure 4 , 7As shown, the movable mold 18 is provided with a guide rod 36 which is slidably arranged in a sliding groove A11 of the fixed base 10. The spring B37 is a compression spring and is sleeved on the guide rod 36. One end of the spring B37 is connected with the movable mold 18, and the other end is connected with the fixed base 10.

[0046] As shown in Figure 5 , the spring A27 is a compression spring. The spring A27 is arranged in a ring groove in the inner wall of the sliding groove F25. One end of the spring A27 is connected with the press spring ring 28 on the pull rod 26, and the other end is connected with the inner wall of the ring groove.

[0047] As shown in Figure 4 , 7 , 8, the fixed base 10 is provided with a supporting plate 40 which supports the movable mold 18. The trapezoidal guide block 39 at the bottom of the movable mold 18 is slidably arranged in the trapezoidal guide groove 41 on the supporting plate 40. The movable mold 18 is symmetrically provided with two limiting strips 21 which are correspondingly matched with two limiting grooves 15 in the inner wall of the insertion groove 14.

[0048] The laser cutting device 42 in the present application adopts the prior art.

[0049] The working process of the present application is as follows: in the initial state, the movable mold 18 in the injection molding mechanism 9 is inserted into the insertion groove 14 of the fixed mold 13, the fixed mold 13 and the movable mold 18 are in the closed mold state, the spring A27 and the spring B37 are in the compressed state, the four slide rods 30 are in abutment with the wall surface of the mold convex 17 of the fixed mold 13, the pouring groove 31 on each slide rod 30 is in communication with the corresponding two adjacent mold cavities 34, the end of the baffle B32 is inserted into the sliding groove C16 in the inner wall of the insertion groove 14 of the fixed mold 13, and the cutting hole 33 on the baffle B32 is opposite to the injection port A22. The supporting plate 50 in the hot-pressing packaging mechanism 43 is in the closed state of the packaging groove 44, and the two hot-melt blocks 46 are retracted into the corresponding sliding groove G45 from the inner wall of the packaging groove 44.

[0050] When the injection molding of the six semi-ring plastic cylinders 55 as the telescopic cylinder component is needed, the motor A7 is started first, and the motor A7 drives the two transmission belts A2 and B3 to run through the gear C6, the gear B5 and the two gears A4.

[0051] Then, the molten plastic is injected into the two end mold cavities 34 communicated with the injection port B23 through the injection port A22 and the two injection ports B23, and the molten plastic fills all the remaining mold cavities 34 in turn through the pouring groove 31 on the slide rod 30 and finally forms the six semi-ring plastic cylinders 55. Among them, any two adjacent plastic cylinders 55 on the same side are connected by a connecting strip 56 due to the existence of the pouring groove 31 on the slide rod 30.

[0052] After the plastic barrels 55 in the mold cavity 34 are cooled, the electric push rod 38 is started, and the electric push rod 38 first drives the pull rod 26 to slide relative to the movable mold 18 and further compresses the spring A 27, the spring A 27 is further compressed, the pull rod 26 drives the four connecting rods 29 connected with it to drive the four slide rods 30 to retract synchronously into the corresponding slide groove D 20 on the movable mold 18 and disconnect the connecting strip 56, ensure that the connecting strip 56 between the plastic barrels 55 is smoothly separated from the movable mold 18 without being broken under the action of the movable mold 18 when the movable mold 18 and the fixed mold 13 are in the pressing and clamping state of the six formed plastic barrels 55, and further ensure the integrity of the connecting strip 56. At the same time, the pull rod 26 drives the baffle B 32 to retract into the slide groove E 24 on the movable mold 18 and cut the plastic strip formed in the injection port A 22.

[0053] With the continuous operation of the electric push rod 38, when the movement of the pull rod 26 relative to the movable mold 18 reaches the limit, the pull rod 26 drives the movable mold 18 to start synchronous movement under the drive of the electric push rod 38, the movable mold 18 is separated from the fixed mold 13 and the insertion slot 14 on the movable mold 18, and the demolding of the movable mold 18 and the six formed semi-ring plastic barrels 55 is completed.

[0054] During the separation of the movable mold 18 and the fixed mold 13, the six formed plastic barrels 55 are shaken with the movable mold 18, and when the movable mold 18 is completely separated from the six formed plastic barrels 55, the six formed plastic barrels 55 fall from the mold convex 17 of the fixed mold 13 to the herringbone initial section of the two transmission belts A2 below under the action of gravity, and the three pairs of plastic barrels 55 on the transmission belt A2 are located in the vertical plane perpendicular to the movement direction of the transmission belt A2 under the action of gravity.

[0055] When the six formed semi-ring plastic barrels 55 fall onto the two transmission belts A2, the electric push rod 38 is started, and the electric push rod 38 drives the movable mold 18 to reinsert into the insertion slot 14 of the fixed mold 13 and complete the closing of the mold with the fixed mold 13, the spring A 27 and the spring B 37 release energy, the four slide rods 30 reinsert into the fixed mold 13, and the baffle B 32 reinserts into the slide groove C 16 on the inner wall of the insertion slot 14 of the fixed mold 13 and completes the relative position of the cutting hole 33 and the injection port A 22.

[0056] With the running of the two transmission belts A2, the three pairs of six plastic cylinders 55 are moved from the herringbone initial sections of the two transmission belts A2 to the horizontal sections of the two transmission belts A2, and the three pairs of six plastic cylinders 55 are gradually sorted in the lateral direction along the running direction of the transmission belts A2 and finally reach the transmission belt B3 and are conveyed by the transmission belt B3 to the lower side of the laser cutting device 42, and the three pairs of six plastic cylinders 55 are finally located in the central position of the transmission belt B3 due to the action of the herringbone initial sections of the two transmission belts A2, and the five connecting strips 56 of the three pairs of plastic cylinders 55 correspond one-to-one to the five laser cutters on the laser cutting device 42.

[0057] When the laterally sorted six plastic cylinders 55 reach the lower side of the laser cutting device 42, the laser cutting device 42 quickly cuts the five connecting strips 56 on the three pairs of six plastic cylinders 55, so that the connection between the six plastic cylinders 55 is disconnected.

[0058] When the plastic cylinders 55 reach the transmission belt B3, a piece of plastic cloth 57 is placed above the packaging groove 44 of the hot-press packaging mechanism 43 in time.

[0059] The six disconnected semi-ring plastic cylinders 55 fall onto the plastic cloth 57 in a lateral arrangement as the transmission belt B3 is conveyed, and the plastic cloth 57 enters the packaging groove 44 in the hot-press packaging mechanism 43, and the six plastic cylinders 55 falling into the packaging groove 44 are automatically wrapped by the plastic cloth 57.

[0060] Then, two motors B49 in the hot-press packaging mechanism 43 are started, and the two motors B49 respectively drive the corresponding one end of the two hot-melt blocks 46 to move towards the edge of the plastic cloth 57 in the packaging groove 44, and the synchronous movement of the two ends of the hot-melt block 46 ensures the smooth movement of the hot-melt block 46 in the sliding groove G45 without being stuck.

[0061] The two hot-melt blocks 46 extrude and hot-melt the edges of the plastic cloth 57 at the same time, so that the plastic cloth 57 wrapped around the six plastic cylinders 55 forms a plastic package for the six plastic cylinders 55.

[0062] Next, the two motors B49 are started in reverse, and the two motors B49 drive the two hot-melt blocks 46 to reset and separate from the plastic cloth 57 through a series of transmission belts.

[0063] Finally, the motor C54 in the hot-press packaging mechanism 43 is started, and the motor C54 drives the supporting plate 50 to open the lower end of the packaging groove 44 through the gear F53, the gear E52 and the swing shaft 51, and the six plastic cylinders 55 wrapped in the plastic package fall into the collection box 58 below under the action of gravity.

[0064] In conclusion, the beneficial effects of the present application are: the injection mechanism 9 in the present application can make the plastic cylinder 55 automatically demoulded under the slight driving of the movable die 18 after the plastic cylinder 55 is formed, the structure characteristics of the transmission mechanism can make the six plastic cylinders 55 demoulded from the injection mechanism 9 finally move to the laser cutting device 42 below in a transversely arranged manner for cutting and separating, the plastic cylinders 55 after cutting and separating can be plastic sealed and packaged without screening, so as to achieve the purpose of optimizing the injection molding process, reducing the number of injection molding related equipment and reducing the injection molding cost.

[0065] The cooperation mode between the movable die 18 and the fixed die 13 in the present application is horizontal plug-in cooperation, and the trapezoidal insertion slot 14 of the movable die 18 cooperates with the fixed die 13, the separation force generated by the injection pressure is very small, so that the effective cooperation between the movable die 18 and the fixed die 13 can still be ensured under the condition that the fixed strength of the movable die 18 and the fixed die 13 is small, it is ensured that the movable die 18 and the fixed die 13 will not increase the quality due to the increase of the fixed strength caused by bearing larger injection pressure, the mold cost is reduced, at the same time, the movable die 18 and the fixed die 13 in the present application can bear larger injection pressure, so as to improve the injection efficiency.

Claims

1. A plastic injection molding equipment, characterized in that: It includes a support frame, a conveying mechanism, an injection molding mechanism, a laser cutting equipment, and a hot-press packaging mechanism. The support frame is equipped with the injection molding mechanism, the laser cutting equipment, and the hot-press packaging mechanism in sequence according to the process. It also has a conveying mechanism that transports three pairs of sequentially connected semi-ring plastic cylinders that are demolded from the injection molding mechanism to the laser cutting equipment in a horizontal sorting manner for cutting and separation. After the plastic cylinders are cut and separated, they are transported to the hot-press packaging mechanism for plastic sealing. The injection molding mechanism includes a fixed base, a fixed mold, a moving mold, a spring B, and an electric push rod. The fixed mold is installed in the n-shaped fixed base, which is fixed to the bracket. A moving mold, driven by the electric push rod and horizontally moving within the fixed base, engages with the trapezoidal slot at the lower end of the fixed mold and is also installed with a spring B for resetting the moving mold. Three pairs of semi-circular mold grooves on both sides of the moving mold and three pairs of semi-circular mold protrusions on both sides of the fixed mold slot form three pairs of semi-annular mold cavities when the moving mold and fixed mold are closed. The moving mold has a structure that forms a gating groove between any two adjacent mold cavities on each side. The end of the moving mold has a vertical injection port A with a semi-circular cross-section, communicating with its lower end and connecting to the mold grooves at both ends via a horizontal injection port B. The cross-section of injection port B is a semi-circle communicating with the end of the moving mold. The fixed mold has a structure that separates the plastic strip formed in injection port A from the connecting strip formed in the two injection ports B. The hot-press packaging mechanism includes a packaging trough, hot melt blocks, motor B, support plate, swing shaft, and motor C. Two n-shaped hot melt blocks, driven synchronously by two motors B, slide horizontally in opposite directions or in opposite directions in two sliding grooves G on the two side walls of the packaging trough. A support plate for supporting plastic cylinders is installed at the bottom of the packaging trough via a swing shaft driven by motor C. Each of the moving molds has a sliding rod with a casting groove at its end in the sliding groove D between any two adjacent mold slots on each side. One end of the sliding rod is hinged to a connecting rod, which is hinged to a pull rod that slides in the sliding groove F at one end of the moving mold. A spring A is nested on the pull rod to reset it. The pull rod slides in the sliding groove B on the fixed base and is driven by an electric push rod. Spring A is located in the annular groove on the inner wall of slide F; one end of spring A is connected to the compression spring ring on the pull rod, and the other end is connected to the inner wall of the annular groove. The end of the pull rod is equipped with a strip B that mates with the groove C on the inner wall of the slot. The strip B slides in the groove E on the moving mold. The strip B has a cutting hole that mates with the injection port A. The inner wall of the cutting hole has a sharp blade.

2. The plastic injection molding equipment according to claim 1, characterized in that: The conveying mechanism includes conveyor belt A, conveyor belt B, and motor A. The two symmetrical conveyor belts A, mounted on the bracket, form a herringbone shape in the initial section, causing the two parts of the three pairs of plastic cylinders demolded from the injection molding mechanism to hang naturally to both sides. At the end, they form a horizontal conveying state in which the three pairs of plastic cylinders are arranged laterally. The conveyor belt B, mounted on the bracket and located below the laser cutting equipment, connects with the horizontal section of the two conveyor belts A. The conveyor belt B and the two conveyor belts A are synchronously driven by motor A.

3. A plastic injection molding equipment according to claim 2, characterized in that: Gear A is installed on both the roller shaft at the end of conveyor belt A and the roller shaft at the beginning of conveyor belt B. Both gears A mesh with gear B on the support simultaneously. Gear B meshes with gear C on the output shaft of motor A.

4. A plastic injection molding equipment according to claim 2, characterized in that: The bracket is fixed with a light slide strip A that blocks the gap formed by the herringbone shape between the two conveyor belts A due to the twisting of their initial sections.

5. A plastic injection molding equipment according to claim 1, characterized in that: Two racks are symmetrically installed on each of the two hot melt blocks. The two racks on the same side of the two hot melt blocks mesh with gear D on the output shaft of motor B on the side wall of the packaging tank; gear E installed on the swing shaft meshes with gear F on the output shaft of motor C on the side wall of the packaging tank.

6. A plastic injection molding equipment according to claim 1, characterized in that: Below the packaging trough is a collection box for collecting the sealed plastic tubes.

Images