Plastic straw blow molding equipment

Abstract

The present invention provides a plastic straw blow molding device, belonging to the field of straw manufacturing technology, comprising a blow molding shell, a mounting plate is installed on the rear side wall of the blow molding shell, a blow molding machine is fixedly connected to the front of the mounting plate, a strip rectangular frame located below the blow molding machine is installed on the front of the mounting plate, a hollow mold frame is installed on the strip rectangular frame, a mirror-distributed support frame is installed on the hollow mold frame, and an electric push rod is fixedly connected to each of the support frames. The present invention solves the problem that the mold is usually in motion during production, so the rubber channel for conveying cooling water and the metal channel connected to the mold must be firmly connected to ensure that cooling water is not easily leaked at the connection.

Description

Technical Field

[0001] The invention belongs to the technical field of straw manufacturing, and in particular relates to a plastic straw blow molding device. Background Art

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. Blow molding technology began to be used to produce low-density polyethylene bottles during World War II. In the late 1950s, with the birth of high-density polyethylene and the development of blow molding machines, blow molding technology has been widely used. The volume of hollow containers can reach thousands of liters, and some production has been computer-controlled. Plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc. The resulting hollow containers are widely used as industrial packaging containers. In daily life, the straws we often use are also mostly made by blow molding.

[0003] In order to achieve faster production efficiency, the existing plastic straw blow molding must be able to cool faster. Since the air flow around the equipment is poor and the structure of the device is compact, the cooling speed of the blow molding mold is slow. At this time, cooling water is usually used to cool down. However, the mold is usually in motion during production. Therefore, the rubber channel for conveying cooling water and the metal channel connected to the mold must be firmly connected to ensure that cooling water is not easily leaked at the connection. Therefore, a plastic straw blow molding equipment is proposed. Summary of the invention

[0004] The present invention provides a plastic straw blow molding device, which aims to solve the problem that the mold usually moves during production, so the rubber channel for conveying cooling water and the metal channel connected to the mold must be firmly connected to ensure that the cooling water is not easily leaked at the connection.

[0005] The embodiment of the present invention provides a plastic straw blow molding device, comprising a blow molding shell, a rear side wall of the blow molding shell is provided with an assembly plate, a blow molding machine is fixedly connected to the front of the assembly plate, a strip rectangular frame located below the blow molding machine is provided on the front of the assembly plate, a hollow mold frame is provided on the strip rectangular frame, a mirror-distributed support frame is provided on the hollow mold frame, each of the support frames is fixedly connected with an electric push rod, a straw mold is provided at the telescopic end of the electric push rod, a continuous S-shaped cooling cavity is reserved in the straw mold, the cooling cavity is provided with an inlet and an outlet, and cooling connection parts are provided at the inlet and the outlet;

[0006] The cooling connection part includes a connection cylinder, and a metal channel and a rubber channel connected at both ends of the connection cylinder. The connection cylinder includes a cylinder body 1 and a cylinder body 2. The cylinder body 1 and the metal channel are connected via a sheet. The cylinder body 1 and the rubber channel are embedded. The cylinder body 2 and the metal channel are embedded. A binding unit is installed in the cylinder body 1. The binding unit and the rubber channel are tightly connected by compression. A closed connection unit is installed in the cylinder body 2.

[0007] The end of the metal channel close to the straw mold has a diameter reducing setting, and the diameter reducing setting is that the diameter of the metal channel close to the straw mold is smaller than the diameter of the metal channel away from the straw mold, and the small diameter ends of each metal channel are connected to the corresponding inlet and outlet.

[0008] Furthermore, a pressure cylinder is arranged on the side of the rubber channel, the ends of the pressure cylinder and the cylinder body are pressed tightly together, the outer circumferences of the pressure cylinder and the cylinder body are both arranged with thread teeth, the side of the pressure cylinder is threadedly connected to a restraining ring, and the restraining ring is threadedly connected to the pressure cylinder and the cylinder body;

[0009] A connecting channel is arranged in the cylinder, a rubber disc is arranged on the top wall of the connecting channel, a compression ring is arranged at one end of the rubber channel, and a pressure disc which is in close contact with the connecting channel is arranged on the wall of the connecting end of the compression ring.

[0010] Furthermore, the restraining unit includes an assembly ring, a fixed connecting rod, a connecting unit and a rotating ring. The assembly ring is assembled on an inner wall of the cylinder via the fixed connecting rod. A plurality of rotating rings are mounted on the assembly ring. The plurality of rotating rings are arranged in a circle at equal intervals. The number of the connecting units is the same as the number of the rotating rings. Two rotating rings close to each other are connected via the connecting unit.

[0011] Furthermore, the assembly unit includes connecting rod 1, connecting rod 2, connecting plate 1, connecting plate 2, extension plate 1, extension plate 2 and an assembly plate. The connecting rod 1 and the connecting rod 2 are respectively fixedly connected to two adjacent rotating circles. One end of the connecting rod 1 is pin-connected to the connecting plate 1, and one end of the connecting rod 2 is pin-connected to the extension plate 2. Both ends of the assembly plate are respectively connected to the extension plate 1 and the extension plate 2. One end of the extension plate 1 is pin-connected to the end of the connecting plate 1, and one end of the extension plate 2 is pin-connected to the end of the connecting plate 2. The assembly unit is variably locked and connected to the top of the compression ring.

[0012] Furthermore, the closed connecting unit comprises an assembly channel, an expansion unit, a closing unit, a receiving tube and a restraining tube. The top of the assembly channel is connected to the connecting channel through the sheet body. The outer circumferential surface of the assembly channel is circularly reserved with a plurality of sliding cavities for assembling the expansion unit and the closing unit. The expansion unit and the closing unit are circularly arranged on the side of the assembly channel. The restraining tube is arranged on the side of the assembly channel. The receiving tube is arranged on the side of the restraining tube. The receiving tube is fixedly connected to the second cylinder body.

[0013] Further, the unfolding unit comprises a displacement seat, a fixed seat, a swinging piece, a movable piece, an arched platform, an arched piece and a transmission ring. The displacement seat is embedded in the sliding cavity, so that one end of the swinging piece is pinned to the top inner wall of the displacement seat, the other end of the swinging piece is pinned to the top inner wall of the fixed seat, the fixed seat is fixed to the inner wall of the arched platform, one end of the movable piece is pinned to the bottom inner wall of the displacement seat, the other end of the movable piece is pinned to the bottom inner wall of the fixed seat, the bottom of the fixed seat is extended to connect to the arched piece, and the arched piece is connected to the transmission ring.

[0014] Further, the closed unit comprises a displacement seat 2, a fixed connection seat 2, a swinging piece 2, a movable piece 2, an arched closed platform, an arched piece 2 and a transmission ring 2. The displacement seat 2 is embedded and installed in the sliding cavity. One end of the swinging piece 2 is pinned to the top inner wall of the displacement seat 2, and the other end of the swinging piece 2 is pinned to the top inner wall of the fixed connection seat 2. The fixed connection seat 2 is fixedly connected to the inner wall of the arched closed platform. One end of the movable piece 2 is pinned to the bottom inner wall of the displacement seat 2, and the other end of the movable piece 2 is pinned to the bottom inner wall of the fixed connection seat 2. The bottom of the fixed connection seat 2 extends and is connected to the arched piece 2, and the arched piece 2 is connected to the transmission ring 2.

[0015] Further, the displacement seat 1, the fixed connection seat 1, the swing piece 1, the movable piece 1, the arched platform, the arched platform 1, the displacement seat 2, the fixed connection seat 2, the swing piece 2, the movable piece 2, the arched closed platform and the arched platform 2 are all arranged in 4 pieces, and the 4 arched platforms and the 4 arched closed platforms are arranged alternately in an arch shape, the bottoms of the 4 arched plates 1 are all connected to the transmission ring 2, the bottoms of the 4 arched plates 2 are all connected to the transmission ring 2, the transmission ring 1 is reserved with a through hole for allowing the transmission ring 2 to pass through, and the transmission ring 2 is reserved with a through hole for allowing the expansion channel at the bottom of the assembly channel to pass through;

[0016] The displacement seat 1, the fixed seat 1, the swing piece 1, the movable piece 1, the arched platform, the arched platform 1, the displacement seat 2, the fixed seat 2, the swing piece 2, the movable piece 2, the arched closed platform and the arched platform 2 are all installed in 4 pieces. The 4 arched platforms and the 4 arched closed platforms are alternately arranged in an arch shape. The bottoms of the 4 arched plates 1 are all connected to the transmission ring 2, and the bottoms of the 4 arched plates 2 are all connected to the transmission ring 2. A penetration hole is reserved in the transmission ring 1 for allowing the transmission ring 2 to pass through.

[0017] Furthermore, the bottom of the constraint tube is connected to the outer peripheral surface of the assembly channel via the side plate, the central area of ​​the constraint tube reserves an arched cavity connected with the arched platform and the arched closing platform, the connecting end of the metal channel is covered on the side of the constraint tube, the arched platform and the arched closing platform and the inner wall of the metal channel can be variably pressed and tightly attached, the receiving tube is arranged on the peripheral surface of the metal channel, the expansion channel is embedded in the metal channel, the wall of the metal channel is arranged with an outer cylinder body, the outer cylinder body is arranged with a compression cylinder, and the middle end of the outer cylinder body is arranged with a threaded tooth two which is threadedly connected with the two walls of the cylinder body.

[0018] Furthermore, a transmission plate is installed in the second cylinder, the top of the transmission plate is installed in the first cylinder through the plate body, a stop plate is installed on the inner wall of the first cylinder, a stop cavity is reserved in the stop plate, a stop platform embedded in the stop cavity is installed on one side of the outer cylinder, a displacement plate is installed on the other side of the transmission plate, a transmission disc is installed on the rotating circle, and the transmission disc and the displacement plate are engaged.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention has a thread connection between the constraint ring, the pressure cylinder and the cylinder body, and the cylinder body and the rubber channel are constrained and connected through the constraint ring to ensure the firmness of the connection and prevent separation. The pressure ring is firmly pressed on the connection channel through the swing of the assembly unit to ensure the sealing and leak-proof effect of the connection area, thereby achieving the purpose of the closed connection between the rubber channel and the connection cylinder.

[0021] 2. The present invention can expand the metal channel and fix it to the side of the constraint tube through the installation of the closed connection unit. It can be fixed by expansion and compression to seal and prevent leakage. During the closing period, the connection is firm to prevent the metal channel from detaching and also prevent the leakage of the liquid. During the closed and constrained assembly of the metal channel, the transmission plate pulls the assembly unit to swing and press it tightly, so as to achieve the purpose of assembling the metal channel and the rubber channel together, making the assembly simpler and quicker.

[0022] 3. The ends of the metal channels with smaller diameters of the present invention are respectively connected to the corresponding inlet and outlet, so that the flow rate of cooling water can be accelerated, which can reduce the temperature faster. The rubber channel is connected to the external cooling water source and circulates through the power source. During operation, the electric push rod pulls the straw mold to close, and then the blow molding machine is used to blow-mold straws into the two straw molds. After the blow molding is completed, the cooling cavity is used to quickly cool down, and then the electric push rod is used to pull the straw molds apart. The formed straws fall from the straw molds, pass through the hollow mold frame and the strip rectangular frame, and fall into the bottom area of ​​the blow-molded shell to be taken out later.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the blow-molded shell in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a cross-sectional structure of a cooling cavity according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the cooling connection structure of an embodiment of the present invention;

[0029] Figure 5 It is a schematic diagram of the exploded structure of the cooling coupling part of an embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of a connection structure between a rubber channel and a cylinder according to an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the binding unit according to an embodiment of the present invention;

[0032] Figure 8 For the embodiment of the present invention Figure 7 Schematic diagram of the structure at Z in the middle;

[0033] Fig. 9 A schematic diagram of a cross-sectional structure of a closed connection unit according to an embodiment of the present invention;

[0034] Fig.10 It is a partial structural schematic diagram of a closed connection unit according to an embodiment of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of an expansion unit according to an embodiment of the present invention;

[0036] Fig.12 A schematic diagram of a closed unit structure according to an embodiment of the present invention;

[0037] Fig.13 This is a schematic diagram of the two-part decomposition structure of the metal channel and the cylinder according to an embodiment of the present invention;

[0038] Fig.14 For the embodiment of the present invention Fig.13 Schematic diagram of the structure at X in the middle;

[0039] Reference numerals: 11, blow molding shell; 111, assembly plate; 112, blow molding machine; 113, strip rectangular frame; 114, hollow mold frame; 115, support frame; 116, electric push rod; 117, straw mold; 118, cooling cavity; 120, cooling connection; 12, connection cylinder; 122, cylinder body 1; 1222, connection channel; 12222, rubber disc; 1223, stop plate; 12232, stop cavity; 123, cylinder body 2; 1232, transmission plate; 12322, displacement plate; 13, metal channel; 132, outer cylinder; 1322, compression cylinder; 14, rubber channel; 142, pressure cylinder; 1422, constraint ring; 143, compression ring; 1432, pressure disc; 15, restraint unit; 152, assembly ring; 153, fixed rod; 154, assembly unit; 1542, connecting rod 1; 1543, connecting rod 2; 1544, connecting plate 1; 1545, connecting Plate 2; 1546, expansion plate 1; 1547, expansion plate 2; 1548, assembly plate; 155, rotating ring; 1552, transmission disc; 16, closed connection unit; 162, assembly channel; 1622, sliding cavity; 16222, motor 1; 162222, disc 1; 16223, motor 2; 162232, disc 2; 1623, expansion channel; 163, expansion unit; 1632, displacement seat 1; 1633, fixed connection Seat one; 1634, swing piece one; 1635, movable piece one; 1636, arched platform; 1637, arched piece one; 1638, transmission ring one; 164, closed unit; 1642, displacement seat two; 1643, fixed seat two; 1644, swing piece two; 1645, movable piece two; 1646, arched closed platform; 1647, arched piece two; 1648, transmission ring two; 165, receiving tube; 166, restraining tube; 1662, arched cavity. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described 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.

[0041] Reference Figure 1-14The embodiment of the present invention provides a plastic straw blow molding device, comprising a blow molding shell 11, a rear side wall of the blow molding shell 11 is provided with an assembly plate 111, a blow molding machine 112 is fixedly connected to the front of the assembly plate 111, a strip rectangular frame 113 located below the blow molding machine 112 is provided on the front of the assembly plate 111, a hollow mold frame 114 is provided on the strip rectangular frame 113, a mirror-distributed support frame 115 is provided on the hollow mold frame 114, each support frame 115 is fixedly connected with an electric push rod 116, a straw mold 117 is provided at the telescopic end of the electric push rod 116, a continuous S-shaped cooling cavity 118 is reserved in the straw mold 117, and a cooling cavity 118 is provided in the cooling cavity 118. The cooling cavity 118 is provided with an inlet and an outlet, and a cooling connection part 120 is installed at the inlet and the outlet. The cooling connection part 120 includes a connection tube 12, and a metal channel 13 and a rubber channel 14 connected at both ends of the connection tube 12. The connection tube 12 includes a cylinder body 122 and a cylinder body 2 123. The cylinder body 122 and the metal channel 13 are connected via a sheet body. The cylinder body 122 and the rubber channel 14 are embedded, and the cylinder body 2 123 and the metal channel 13 are embedded. A restraining unit 15 is installed in the cylinder body 122. The restraining unit 15 and the rubber channel 14 are pressed and tightly connected. A closed connection unit 16 is installed in the cylinder body 2 123.

[0042] The end of the metal channel 13 close to the straw mold 117 is provided with a reducer, and the diameter of a section of the metal channel 13 close to the straw mold 117 is smaller than the diameter of a section of the metal channel 13 away from the straw mold 117, and the small diameter ends of each metal channel 13 are respectively connected to the corresponding inlet and outlet, so that the flow rate of the cooling water can be accelerated, so that the temperature can be reduced faster. The rubber channel 14 is connected to the external cooling water source and circulates through the power source. During operation, the electric push rod 116 pulls the straw mold 117 together, and then the blow molding machine 112 is used to blow-mold straws into the two straw molds 117. After the blow molding is completed, the cooling cavity 118 is used to quickly cool down, and then the electric push rod 116 pulls the straw molds 117 apart, and the formed straws fall from the straw mold 117, pass through the hollow mold frame 114 and the strip rectangular frame 113, and fall into the bottom area of ​​the blow-molded shell 11, waiting to be completely taken out later.

[0043] A pressure cylinder 142 is installed on the side of the rubber channel 14, and the ends of the pressure cylinder 142 and the cylinder body 122 are pressed tightly together. The outer circumferences of the pressure cylinder 142 and the cylinder body 122 are installed with threaded teeth. The side of the pressure cylinder 142 is threadedly connected to a constraint ring 1422, and the constraint ring 1422, the pressure cylinder 142 and the cylinder body 122 are threadedly connected. The cylinder body 122 and the rubber channel 14 are constrained and connected via the constraint ring 1422 to ensure a firm connection and prevent separation.

[0044] The restraining unit 15 comprises an assembly ring 152, a fixed connecting rod 153, a connecting unit 154 and a rotating ring 155. The assembly ring 152 is assembled on the inner wall of the cylinder 122 via the fixed connecting rod 153. A plurality of rotating rings 155 are arranged on the assembly ring 152. The plurality of rotating rings 155 are arranged in a circle at equal intervals. The number of the connecting units 154 is the same as the number of the rotating rings 155. Two rotating rings 155 close to each other are connected via the connecting unit 154. 154 is connected, the assembly unit 154 comprises a connecting rod 1 1542, a connecting rod 2 1543, a connecting piece 1 1544, a connecting piece 2 1545, an extension piece 1 1546, an extension piece 2 1547 and an assembly piece 1548, the connecting rod 1 1542 and the connecting rod 2 1543 are respectively fixedly connected to two adjacent rotating circles 155, one end of the connecting rod 1 1542 is pin-connected to the connecting piece 1 1544, and the connecting rod 2 1543 is pin-connected to the connecting piece 1 The first and second extension pieces 1547 are pinned together, the two ends of the assembly piece 1548 are respectively connected to the extension piece 1546 and the extension piece 2 1547, the extension piece 1546 is pinned to the end of the connection piece 1544, the extension piece 2 1547 is pinned to the end of the connection piece 2 1545, the assembly unit 154 and the top of the compression ring 143 are variably locked and connected, and the cylinder 122 is provided with a connection channel 1222, and the connection channel 122 A rubber disc 12222 is installed on the top wall, a compression ring 143 is installed at one end of the rubber channel 14, and a pressure disc 1432 is installed on the wall of the end of the compression ring 143, which is pressed tightly against the connection channel 1222. The compression ring 143 is firmly pressed on the connection channel 1222 by swinging through the assembly unit 154, thereby ensuring the sealing and leakproof effect of the connection area, and achieving the purpose of the airtight connection between the rubber channel 14 and the connection tube 12.

[0045] The closed connection unit 16 includes an assembly channel 162, an expansion unit 163, a closing unit 164, a receiving tube 165 and a constraint tube 166. The top of the assembly channel 162 is connected to the connection channel 1222 through the sheet body. The outer circumference of the assembly channel 162 is reserved with a plurality of sliding cavities 1622 for assembling the expansion unit 163 and the closing unit 164. The expansion unit 163 and the closing unit 164 are arranged in a circle on the side of the assembly channel 162. The constraint tube 166 is arranged on the side of the assembly channel 162. The receiving tube 165 is arranged on the side of the constraint tube 166. The receiving tube 165 is fixedly connected to the cylinder body 123. The expansion unit 163 includes a displacement seat 1632, a fixed connection seat 1633, and a swing plate 1634. , movable sheet 1635, arched platform 1636, arched sheet 1637 and transmission ring 1638, displacement seat 1632 is embedded and installed in the sliding cavity 1622, so one end of the swing sheet 1634 is pinned to the top inner wall of the displacement seat 1632, the other end of the swing sheet 1634 is pinned to the top inner wall of the fixed connection seat 1633, the fixed connection seat 1633 is fixedly connected to the inner wall of the arched platform 1636, one end of the movable sheet 1635 is pinned to the bottom inner wall of the displacement seat 1632, the other end of the movable sheet 1635 is pinned to the bottom inner wall of the fixed connection seat 1633, the bottom of the fixed connection seat 1633 is extended and connected to the arched sheet 1637, the arched sheet 1637 is connected to the transmission ring 1638, and the closed unit 164 includes The displacement seat 1642, the fixed connection seat 1643, the swing piece 1644, the movable piece 1645, the arched closed platform 1646, the arched piece 1647 and the transmission ring 1648, the displacement seat 1642 is embedded and installed in the sliding cavity 1622, the swing piece 1644 is pinned at one end to the top inner wall of the displacement seat 1642, the swing piece 1644 is pinned at the other end to the top inner wall of the fixed connection seat 1643, the fixed connection seat 1643 is fixedly connected to the inner wall of the arched closed platform 1646, the movable piece 1645 is pinned at one end to the bottom inner wall of the displacement seat 1642, the movable piece 1645 is pinned at the other end to the bottom inner wall of the fixed connection seat 1643, the bottom of the fixed connection seat 1643 is extended and connected to the arched piece 1647, the arched The second arched piece 1647 is connected to the second transmission ring 1648. The displacement seat 1632, the fixed seat 1633, the swing piece 1634, the movable piece 1635, the arched platform 1636, the arched piece 1637, the displacement seat 1642, the fixed seat 1643, the swing piece 1644, the movable piece 1645, the arched closed platform 1646 and the second arched piece 1647 are all arranged in four pieces. The four arched platforms 1636 and the four arched closed platforms 1646 are arranged alternately in an arch shape. The bottoms of the four arched pieces 1637 are all connected to the second transmission ring 1648. The bottoms of the four arched pieces 2 1647 are all connected to the second transmission ring 1648. A through hole is reserved in the first transmission ring 1638 for the second transmission ring 1648 to pass through.A through hole is reserved in the transmission ring 1648 for allowing the expansion channel 1623 at the bottom of the assembly channel 162 to pass through. The inner wall of the sliding cavity 1622 embedded with the displacement seat 1632 is provided with a motor 16222. The rotating rod of the motor 16222 is provided with a round piece 162222 with a plurality of teeth reserved. The inner wall of the arch piece 1637 is provided with teeth reserved for engaging with the round piece 162222. The inner wall of the sliding cavity 1622 embedded with the displacement seat 1642 is provided with a motor 2 16223. The rotating rod of the motor 2 16223 is provided with a round piece 2 162232 with a plurality of teeth reserved. The inner wall of the arch piece 2 1647 is provided with teeth reserved for engaging with the round piece 2 162232. The bottom of the constraint cylinder 166 is provided with a side plate Connected to the outer peripheral surface of the assembly channel 162, the central area of ​​the constraint cylinder 166 reserves an arched cavity 1662 connected with the arched platform 1636 and the arched closed platform 1646. The connection end of the metal channel 13 is covered on the side of the constraint cylinder 166. The arched platform 1636 and the arched closed platform 1646 can be pressed and tightly attached to the inner wall of the metal channel 13. The receiving cylinder 165 is installed on the peripheral surface of the metal channel 13, and the expansion channel 1623 is embedded and installed in the metal channel 13. Through the installation of the closed connection unit 16, the metal channel 13 can be unfolded to be fixedly connected to the side of the constraint cylinder 166. Through unfolding and pressing, the connection is sealed and leak-proof. During the closing period, the connection is ensured to be firm, preventing the metal channel 13 from detaching, and also preventing the leakage of the liquid inside.

[0046] An outer cylinder 132 is installed on the wall of the metal channel 13, a compression cylinder 1322 is installed in the outer cylinder 132, and a threaded second threaded connection with the wall of the cylinder 123 is installed at the middle end of the outer cylinder 132. When the outer cylinder 132 is constrained and connected, the compression cylinder 1322 and the expanded wall of the metal channel 13 are compressed to form a second-level constrained metal channel 13, ensuring that it is firm after assembly.

[0047] A transmission plate 1232 is arranged in the second cylinder 123, and the top of the transmission plate 1232 is arranged in the first cylinder 122 through the plate body, and a stop plate 1223 is arranged on the inner wall of the first cylinder 122, and a stop cavity 12232 is reserved in the stop plate 1223, and a stop platform embedded in the stop cavity 12232 is arranged on one side of the outer cylinder 132, and a displacement plate 12322 with a plurality of teeth reserved is arranged on the other side of the transmission plate 1232, and a transmission disc 1552 with a plurality of teeth reserved is arranged on the rotating ring 155, and the transmission disc 1552 and the displacement plate 12322 are engaged with each other. During the closed and constrained assembly of the metal channel 13, the assembly unit 154 is pulled by the transmission plate 1232 to swing and press tightly, so as to achieve the purpose of assembling the metal channel 13 and the rubber channel 14 together, making the assembly simpler and quicker.

[0048] The specific implementation method is as follows: the metal channel 13 is inserted into the receiving tube 165 of the second cylinder 123, the metal channel 13 is covered on the surface of the restraining tube 166, and the rubber channel 14 is inserted into the first cylinder 122, and the compression ring 143 at one end of the rubber channel 14 contacts the rubber disc 12222 on the end wall of the connecting channel 1222 installed in the first cylinder 122 through the pressure disc 1432;

[0049] The motor 16222 is operated to pull the disc 162222 to rotate, and the teeth on the disc 162222 and the movable sheet 1635 are engaged, thereby pulling the movable sheet 1635 to move toward the top, and then pulling the displacement seat 1632 to move toward the top. During the displacement of the displacement seat 1632, the arched platform 1636 is pulled to move to the sliding cavity 1622 area, and the arched platform 1636 extends into the arched cavity 1662. The displacement seat 1632 continues to move toward the top, and the arched platform 1636 is constrained by the arched cavity 1662 to expand in the cavity. The four arched platforms 1636 expand the inner wall of the metal channel 13 into a + shape, allowing the metal The outer circumference of the channel 13 and the inner wall of the closed unit 164 are closely connected, and the second motor 16223 pulls the second disc 162232 to rotate, thereby pulling the second arched piece 1647 to move toward the top, pulling the second displacement seat 1642 to slide in the sliding cavity 1622, and when the arched closed platform 1646 moves toward the top to the arched cavity 1662 area, due to the constraint of the through hole, the four arched closed platforms 1646 are expanded in the arched cavity 1662, and while filling the gaps between the four arched platforms 1636, the inner wall of the metal channel 13 is fully compressed and expanded, so that the outer circumference of the metal channel 13 and the inner wall of the receiving tube 165 are closed and connected, and the purpose of closed connection is achieved;

[0050] During the displacement of the arched platform 1636 toward the top, the upper end of the arched platform 1636 lifts the lower end of the transmission plate 1232. During the displacement of the transmission plate 1232 toward the top, the transmission plate 1232 pulls the transmission disc 1552 on the rotating ring 155 to rotate via the displacement plate 12322, thereby pulling the rotating ring 155 to rotate. A plurality of rotating rings 155 are connected via the assembly unit 154, thereby pulling a plurality of assembly units 154 and the rotating ring 155 to rotate around the assembly ring 152. The connecting rod 1542 and the rotating ring 155 are connected. During the rotation of the second connecting rod 1543, the first connecting piece 1544 and the second connecting piece 1545 are pulled to rotate toward the central axis, thereby pulling the first extension piece 1546, the second extension piece 1547 and the assembly piece 1548 to swing toward the central axis and toward the bottom, so that the assembly piece 1548 is pressed on the upper wall of the pressure ring 143, and the pressure disc 1432 under the pressure ring 143 and the rubber disc 12222 on the end wall of the connecting channel 1222 are pressed and tightly attached, so as to achieve the purpose of closed assembly;

[0051] After the metal channel 13 and the receiving tube 165 are sealed and assembled by the closed connection unit 16, the outer cylinder 132 on the metal channel 13 is rotated to rotate the outer cylinder 132 to the outer peripheral surface of the second cylinder 123. During the assembly of the outer cylinder 132, the compression tube 1322 is pulled to move toward the top, so that the compression tube 1322 and the expanded metal channel 13 are compressed and connected, so as to achieve the purpose of re-fixing and restraining the metal channel 13;

[0052] After the compression ring 143 is constrained, the constraining ring 1422 is rotated to connect with the cylinder body 122, and the connecting position of the cylinder body 122 and the pressure cylinder 142 is covered in it, so as to achieve the re-fixed connection and constraint of the rubber channel 14 and the cylinder body 122.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic straw blow molding device, characterized in that: It comprises a blow molding shell (11), the rear side wall of the blow molding shell (11) is provided with an assembly plate (111), the front side of the assembly plate (111) is fixedly connected to a blow molding machine (112), the front side of the assembly plate (111) is provided with a strip rectangular frame (113) located below the blow molding machine (112), the strip rectangular frame (113) is provided with a hollow mold frame (114), the hollow mold frame (114) is provided with a mirror-distributed support frame (115), each of the support frames (115) is fixedly connected to an electric push rod (116), a straw mold (117) is provided at the telescopic end of the electric push rod (116), a continuous S-shaped cooling cavity (118) is reserved in the straw mold (117), the cooling cavity (118) is provided with an inlet and an outlet, and a cooling connection part (120) is provided at the inlet and the outlet; The cooling connection part (120) comprises a connection tube (12), and a metal channel (13) and a rubber channel (14) connected at both ends of the connection tube (12); the connection tube (12) comprises a cylinder body 1 (122) and a cylinder body 2 (123); the cylinder body 1 (122) and the metal channel (13) are connected via a sheet; the cylinder body 1 (122) and the rubber channel (14) are embedded; the cylinder body 2 (123) and the metal channel (13) are embedded; a restraining unit (15) is arranged in the cylinder body 1 (122); the restraining unit (15) and the rubber channel (14) are tightly connected by compression; and a closed connection unit (16) is arranged in the cylinder body 2 (123); An end of the metal channel (13) close to the straw mould (117) is provided with a diameter reducing device, the diameter of a section of the metal channel (13) close to the straw mould (117) being smaller than the diameter of a section of the metal channel (13) away from the straw mould (117), and the ends of the metal channels (13) with smaller diameters are respectively connected to corresponding inlet ports and outlet ports; A pressure tube (142) is installed on the side of the rubber channel (14), the pressure tube (142) and the end of the cylinder body (122) are pressed tightly together, the outer circumferences of the pressure tube (142) and the cylinder body (122) are both installed with threaded teeth, the side of the pressure tube (142) is threadedly connected to a restraining ring (1422), and the restraining ring (1422) and the pressure tube (142) and the cylinder body (122) are threadedly connected; A connecting channel (1222) is arranged in the cylinder (122), a rubber disc (12222) is arranged on the top wall of the connecting channel (1222), a compression ring (143) is arranged at one end of the rubber channel (14), a pressure disc (1432) which is pressed tightly against the connecting channel (1222) is arranged on the wall of the connecting end of the compression ring (143), and the compression ring (143) is pressed onto the connecting channel (1222) under the action of the restraining unit (15).

2. A plastic straw blow molding device according to claim 1, characterized in that: The restraining unit (15) comprises an assembly ring (152), a fixed connection rod (153), a connecting unit (154) and a rotating ring (155). The assembly ring (152) is assembled on the inner wall of the cylinder (122) via the fixed connection rod (153). A plurality of rotating rings (155) are arranged on the assembly ring (152). The plurality of rotating rings (155) are arranged in a circle at equal intervals. The number of the connecting units (154) is the same as the number of the rotating rings (155). Two rotating rings (155) close to each other are connected via the connecting unit (154).

3. A plastic straw blow molding device according to claim 2, characterized in that: The assembly unit (154) comprises a connecting rod 1 (1542), a connecting rod 2 (1543), a connecting plate 1 (1544), a connecting plate 2 (1545), an extension plate 1 (1546), an extension plate 2 (1547) and an assembly plate (1548). The connecting rod 1 (1542) and the connecting rod 2 (1543) are respectively fixedly connected to two adjacent rotating circles (155). One end of the connecting rod 1 (1542) and the connecting plate 1 (1544) are pinned. The connecting rod 2 (1543) is pin-connected at one end to the extension piece 2 (1547), the two ends of the assembly piece (1548) are respectively connected to the extension piece 1 (1546) and the extension piece 2 (1547), the extension piece 1 (1546) is pin-connected at one end to the connecting piece 1 (1544), the extension piece 2 (1547) is pin-connected at one end to the connecting piece 2 (1545), and the assembly unit (154) and the top of the compression ring (143) are variably locked and connected.

4. A plastic straw blow molding device according to claim 3, characterized in that: The closed connection unit (16) comprises an assembly channel (162), an expansion unit (163), a closing unit (164), a receiving tube (165) and a restraining tube (166); the top of the assembly channel (162) is connected to the connecting channel (1222) through the sheet body; the outer circumferential surface of the assembly channel (162) is circularly reserved with a plurality of sliding cavities (1622) for assembling the expansion unit (163) and the closing unit (164); the expansion unit (163) and the closing unit (164) are circularly arranged on the side of the assembly channel (162); the restraining tube (166) is arranged on the side of the assembly channel (162); the receiving tube (165) is arranged on the side of the restraining tube (166); the receiving tube (165) is fixedly connected to the second tube body (123).

5. A plastic straw blow molding device according to claim 4, characterized in that: The unfolding unit (163) comprises a displacement seat (1632), a fixed seat (1633), a swinging piece (1634), a movable piece (1635), an arched platform (1636), an arched piece (1637) and a transmission ring (1638). The displacement seat (1632) is embedded in the sliding cavity (1622), so that one end of the swinging piece (1634) is pin-connected with the top inner wall of the displacement seat (1632), and the other end of the swinging piece (1634) is pin-connected with the fixed seat (1633). The top inner wall of the coupling seat 1 (1633) is pinned, the fixed coupling seat 1 (1633) is fixedly connected to the inner wall of the arched platform (1636), one end of the movable sheet 1 (1635) is pinned to the bottom inner wall of the displacement seat 1 (1632), the other end of the movable sheet 1 (1635) is pinned to the bottom inner wall of the fixed coupling seat 1 (1633), the bottom of the fixed coupling seat 1 (1633) extends and connects to the arched sheet 1 (1637), and the arched sheet 1 (1637) is connected to the transmission ring 1 (1638).

6. A plastic straw blow molding device according to claim 5, characterized in that: The enclosed unit (164) comprises a second displacement seat (1642), a second fixed connection seat (1643), a second swinging piece (1644), a second movable piece (1645), an arched enclosed platform (1646), a second arched piece (1647) and a second transmission ring (1648); the second displacement seat (1642) is embedded in the sliding cavity (1622); one end of the second swinging piece (1644) is pin-connected to the top inner wall of the second displacement seat (1642); the other end of the second swinging piece (1644) is pin-connected to the fixed connection seat (1643); The top inner wall of the second coupling seat (1643) is pin-connected, the second fixed coupling seat (1643) is fixedly connected to the inner wall of the arched closed platform (1646), one end of the second movable piece (1645) is pin-connected to the bottom inner wall of the second displacement seat (1642), the other end of the second movable piece (1645) is pin-connected to the bottom inner wall of the second fixed coupling seat (1643), the bottom of the second fixed coupling seat (1643) is extended to connect the second arched piece (1647), and the second arched piece (1647) is connected to the second transmission ring (1648).

7. A plastic straw blow molding device according to claim 6, characterized in that: The displacement seat 1 (1632), the fixed connection seat 1 (1633), the swing plate 1 (1634), the movable plate 1 (1635), the arched platform (1636), the arched plate 1 (1637), the displacement seat 2 (1642), the fixed connection seat 2 (1643), the swing plate 2 (1644), the movable plate 2 (1645), the arched closed platform (1646) and the arched plate 2 (1647) are all provided with four, and the four arched platforms (1636) and the four arched closed platforms are provided with four The closing platform (1646) is arranged in an arch shape alternately, the bottoms of the four arch pieces (1637) are connected to the transmission ring (1648), the bottoms of the four arch pieces (1647) are connected to the transmission ring (1648), the transmission ring (1638) is reserved with a through hole for allowing the transmission ring (1648) to pass through, and the transmission ring (1648) is reserved with a through hole for allowing the expansion channel (1623) at the bottom of the assembly channel (162) to pass through. The displacement seat 1 (1632), the fixed seat 1 (1633), the swing plate 1 (1634), the movable plate 1 (1635), the arched platform (1636), the arched platform 1 (1637), the displacement seat 2 (1642), the fixed seat 2 (1643), the swing plate 2 (1644), the movable plate 2 (1645), the arched closed platform (1646) and the arched platform 2 (1647) are all arranged in four numbers. The four arched platforms (1636) and the four arched closed platforms (1646) are arranged alternately in an arched shape. The bottoms of the four arched plates 1 (1637) are all connected to the transmission ring 2 (1648). The bottoms of the four arched plates 2 (1647) are all connected to the transmission ring 2 (1648). A through hole is reserved in the transmission ring 1 (1638) for allowing the transmission ring 2 (1648) to pass through.

8. A plastic straw blow molding device according to claim 7, characterized in that: The bottom of the restraining tube (166) is connected to the outer peripheral surface of the assembly channel (162) via the side plate. The central area of ​​the restraining tube (166) reserves an arched cavity (1662) that is connected to the arched platform (1636) and the arched closed platform (1646). The connecting end of the metal channel (13) is covered on the side of the restraining tube (166). The arched platform (1636) is connected to the arched closed platform (1646) and the metal channel (13). ) inner wall can be variably pressed tightly, the receiving tube (165) is arranged on the circumference of the metal channel (13), the expansion channel (1623) is embedded in the metal channel (13), the wall of the metal channel (13) is arranged with an outer cylinder (132), a pressing tube (1322) is arranged in the outer cylinder (132), and a threaded second threaded connection with the wall of the second cylinder (123) is arranged at the middle end of the outer cylinder (132).

9. A plastic straw blow molding device according to claim 8, characterized in that: A transmission plate (1232) is arranged in the second cylinder (123), the top of the transmission plate (1232) is arranged in the first cylinder (122) through the plate body, a stop plate (1223) is arranged on the inner wall of the first cylinder (122), a stop cavity (12232) is reserved in the stop plate (1223), a stop platform engaged with the stop cavity (12232) is arranged on one side of the outer cylinder (132), a displacement plate (12322) is arranged on the other side of the transmission plate (1232), a transmission disc (1552) is arranged on the rotating ring (155), and the transmission disc (1552) and the displacement plate (12322) are engaged with each other.

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