A cooling and conveying system for injection molding of pesticide bottles

Abstract

The present invention relates to the field of injection molding production technology, specifically to a cooling and conveying system for injection molding of pesticide bottles, including a frame, on which a mold group and a conveying rail for conveying the mold group are arranged, and the mold group includes: a base, which is fixedly mounted on the conveying rail; an outer shell group, which includes a plurality of outer shells movably mounted on the base. During production, the invention injects liquid raw materials into the mold group on the conveying rail, and the inner shell group, the outer shell group and the base form an injection molding space to shape the liquid raw materials. Then the cooling system works to cool the mold group, and the liquid raw materials are cooled and solidified to form a bottle cap. After the liquid raw materials are shaped, a plurality of outer shells move and separate from the outer wall of the bottle cap, and a plurality of connecting blocks are retracted so that there is a gap between two adjacent inner shells. At this time, the inner shell can move with the connecting block, so that the threaded protrusion of the inner shell group is separated from the thread on the inner wall of the bottle cap, and the bottle cap can be directly taken out from the mold group.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding production, and more specifically to a cooling and conveying system for pesticide bottle injection molding. Background Art

[0002] Pesticide bottles are a common type of plastic products. The bottle bodies of pesticide bottles are generally produced by blow molding technology, and most of the bottle caps are produced by injection molding technology.

[0003] According to the published (announced) number CN116409538A, the published (announced) date is July 11, 2023. A disclosed plastic pesticide bottle includes a bottle body and a bottle mouth provided at the top of the bottle body. A bottle cap is threadedly connected to the bottle mouth. A liquid outlet channel is opened on the inner wall of the bottle mouth. One end of the liquid outlet channel communicates with the inside of the bottle body, and the other end faces the inside of the bottle mouth. A sealing cover is slidably connected inside the bottle mouth. An elastic member is connected to the sealing cover, and the elastic member is used to keep the sealing cover closed the liquid outlet channel in the natural state. Since a liquid outlet channel is opened on the inner wall of the bottle mouth, and a sealing cover is slidably connected inside the bottle mouth, and the sealing cover is supported by the elastic member and can keep the liquid outlet channel closed in the natural state. When using the pesticide bottle, the bottle cap can be unscrewed first, and then the sealing cover is pressed downwards so that the sealing cover slides down until the liquid outlet channel is exposed, thereby opening the liquid outlet channel. Then the pesticide inside the bottle body can flow out through the liquid outlet channel for use. After the pesticide is poured out, only by relaxing the sealing cover, the sealing cover can automatically reset and re-close the liquid outlet channel under the thrust of the elastic member, avoiding the spillage of the pesticide. The bottle cap can be directly discarded, and only relying on the sealing cover can achieve the sealing of the pesticide, preventing the residual pesticide from flowing out of the bottle body, thereby preventing environmental pollution.

[0004] In the prior art including the above patent, the inner wall of the bottle cap of the pesticide bottle has threads. After the bottle cap of the pesticide bottle is injection molded and cooled and solidified, since the bottle cap is closely attached to the mold and the bottle cap is threadedly connected to the mold, when removing the bottle cap from the mold, it is necessary to rotate the bottle cap to separate the bottle cap from the mold, and the process and steps of removing the bottle cap are relatively complex. Summary of the Invention

[0005] The purpose of the present invention is to provide a cooling and conveying system for pesticide bottle injection molding, aiming to solve the above problems.

[0006] To achieve the above purpose, the present invention provides a cooling and conveying system for pesticide bottle injection molding, including a frame, on which a mold set and a conveying rail for conveying the mold set are provided. The mold set includes:

[0007] A base, which is fixedly installed on the conveying rail;

[0008] An outer shell group, which includes a plurality of outer shell bodies movably installed on the base;

[0009] A plurality of inner shells and a plurality of connecting blocks are movably mounted on the base, wherein the plurality of connecting blocks and the plurality of inner shells are staggeredly distributed to form an inner shell group having threaded protrusions on the outer wall, and the outer shell group, the inner shell group and the base are surrounded to form an injection molding space, wherein:

[0010] The plurality of connecting blocks are brought together so that a gap exists between two adjacent inner shells, and the inner shell moves along with the connecting blocks so that the threaded protrusion of the inner shell group is separated from the bottle cap.

[0011] Preferably, a channel for the flow of coolant is provided on the inner shell, and a plurality of connecting pipes are movably provided on the connecting block, and the connecting pipes connect the channel to form a spiral cooling pipeline inside the inner shell assembly.

[0012] Preferably, a driving ring for driving the outer shell group and the inner shell group to move is rotatably provided on the base, and the driving ring rotates to disperse the outer shell group and to retract the inner shell group.

[0013] Preferably, a gear for driving the driving ring to rotate is rotatably provided on the base, and a rack matched with the gear is provided on the frame.

[0014] Preferably, a tenon block coupled with a driving ring is provided on the outer shell, and the driving ring rotates so that the tenon block drives the outer shell to separate from the bottle cap.

[0015] Preferably, levers are symmetrically and movably provided inside the connection block, and two of the levers move to allow the connection pipe to expand or contract to couple with or decouple from the channel.

[0016] Preferably, a second sliding block is movably provided on the connecting block, and the driving ring rotates and moves downward to couple with the second sliding block so that the two shifting rods in the same connecting block are brought closer.

[0017] Preferably, a connecting rod is provided between the connecting block and the second sliding block, and a pulling rope passing through the connecting rod is provided between the second sliding block and the shifting rod.

[0018] Preferably, a first slider is provided on the inner shell, and the drive ring continues to rotate downward to couple with the second slider and the first slider at the same time.

[0019] Preferably, the driving ring rotates so that the second slider drives the connecting block to move, and the first slider drives the inner shell to move.

[0020] In the above technical solution, a cooling and conveying system for pesticide bottle injection molding provided by the present invention has the following beneficial effects: During production, the injection molding equipment injects liquid raw materials into the mold group on the conveying track. The inner shell group, the outer shell group, and the base enclose an injection molding space to shape the liquid raw materials. Then, the cooling system works to cool down the mold group, and the liquid raw materials cool and solidify to form the bottle cap. After the liquid raw materials are shaped, multiple outer shells are dispersed to separate the outer shells from the outer wall of the bottle cap. Multiple connecting blocks come closer, creating a gap between adjacent inner shells. At this time, the inner shells can move with the connecting blocks and move closer to the center of the base, so that the thread protrusions on the inner shell group are separated from the threads on the inner wall of the bottle cap, and then the bottle cap can be directly taken out from the mold group, and the process steps for taking out the bottle cap are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the mold group provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the inner shell group provided by an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal structure of the base provided by an embodiment of the present invention;

[0026] Figure 5 is Figure 4 the enlarged view at A in

[0027] Figure 6 It is a schematic diagram of the structure of the second sliding rod provided by an embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the cooling pipeline provided by an embodiment of the present invention.

[0029] Explanation of the reference numerals:

[0030] 1. Mold set; 11. Base; 111. Sealing plate; 112. Gear; 113. Driving ring; 114. Connecting ring; 115. Cooling pipe; 116. Connecting rod; 117. Channel; 12. Inner shell set; 121. Inner shell; 122. Connecting block; 123. First sliding rod; 124. Second sliding rod; 125. Pushing rod; 126. Connecting pipe; 127. Pulling rope; 128. First slider; 129. Second slider; 13. Outer shell set; 131. Outer shell; 132. Tenon block; 133. Injection pipe; 2. Frame; 21. Conveyor rail. Detailed implementation mode

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0032] As Figure 1-7 shown, a cooling and conveying system for injecting pesticide bottles includes a frame 2, on which a mold set 1 and a conveyor rail 21 for conveying the mold set 1 are arranged. The mold set 1 includes:

[0033] A base 11, which is fixedly installed on the conveyor rail 21;

[0034] An outer shell set 13, which includes a plurality of outer shells 131 movably installed on the base 11;

[0035] A plurality of inner shells 121 and a plurality of connecting blocks 122 movably installed on the base 11. The plurality of connecting blocks 122 and the plurality of inner shells 121 are staggered to form an inner shell set 12 with threaded protrusions on the outer wall. The outer shell set 13, the inner shell set 12 and the base 11 enclose to form an injection space, wherein:

[0036] The plurality of connecting blocks 122 move closer to make a gap exist between two adjacent inner shells 121, and the inner shell 121 moves with the connecting block 122 to separate the threaded protrusions of the inner shell set 12 from the bottle cap.

[0037] Specifically, a pipe for conveying coolant to the cooling system in the mold set 1 is arranged on the conveyor rail 21.

[0038] Furthermore, during production, the injection molding equipment injects liquid raw materials into the mold group 1 on the conveying rail 21, and the inner shell group 12, the outer shell group 13 and the base 11 form an injection molding space to shape the liquid raw material. Then the cooling system works to cool the mold group 1, and the liquid raw material is cooled and solidified to form a bottle cap. After the liquid raw material is shaped, multiple outer shells 131 are dispersed, and the outer shells 131 are separated from the outer wall of the bottle cap. Multiple connecting blocks 122 are brought together to form a gap between two adjacent inner shells 121. At this time, the inner shell 121 can move with the connecting block 122 and move toward the center of the base 11, thereby separating the threaded protrusion of the inner shell group 12 from the thread on the inner wall of the bottle cap, and then the bottle cap can be directly taken out of the mold group 1, and the process steps for taking out the bottle cap are simple.

[0039] In the above technical scheme, during production, the injection molding equipment injects liquid raw materials into the mold group 1 on the conveying rail 21, and the inner shell group 12, the outer shell group 13 and the base 11 form an injection molding space to shape the liquid raw material. Then the cooling system works to cool the mold group 1, and the liquid raw material is cooled and solidified to form a bottle cap. After the liquid raw material is shaped, multiple outer shells 131 are dispersed, and the outer shells 131 are separated from the outer wall of the bottle cap. Multiple connecting blocks 122 are brought together to form a gap between two adjacent inner shells 121. At this time, the inner shell 121 can move with the connecting block 122 and move toward the center of the base 11, so that the threaded protrusion of the inner shell group 12 is separated from the thread on the inner wall of the bottle cap, and then the bottle cap can be directly taken out from the mold group 1, and the process steps for taking out the bottle cap are simple.

[0040] As a further embodiment of the present invention, a channel 117 for coolant flow is opened on the inner shell 121, and a plurality of connecting pipes 126 are movably provided on the connecting block 122. The connecting pipes 126 connect the channel 117 to form a spiral cooling channel 115 inside the inner shell assembly 12.

[0041] Specifically, the spiral cooling pipe 115 is engaged with the threaded protrusion on the inner shell group 12. The cooling pipe 115 is close to the threaded protrusion, which can absorb the heat of the liquid raw material more quickly, allowing the thread on the inner wall of the bottle cap to cool down and set faster.

[0042] As another embodiment further provided by the present invention, a driving ring 113 for driving the outer shell group 13 and the inner shell group 12 to move is rotatably provided on the base 11, and the driving ring 113 rotates to disperse the outer shell group 13 and retract the inner shell group 12.

[0043] Specifically, after the liquid raw material is cooled and shaped, the driving ring 113 rotates, and the driving ring 113 drives the multiple outer shell bodies 131 that make up the outer shell group 13 to disperse, and the multiple connecting blocks 122 and multiple inner shell bodies 121 that make up the inner shell group 12 move closer to the center of the base 11. The outer shell group 13 is separated from the outer wall of the bottle cap, the inner shell group 12 is separated from the inner wall of the bottle cap, and the thread protrusions on the inner shell group 12 are separated from the thread grooves on the inner wall of the bottle cap, so as to take out the bottle cap from the mold group 1.

[0044] As another embodiment further provided by the present invention, a gear 112 for driving the driving ring 113 to rotate is rotatably provided on the base 11, and a rack adapted to the gear 112 is provided on the frame 2.

[0045] Specifically, teeth meshing with the gear 112 are provided on the outer wall of the driving ring 113.

[0046] Further, when the mold group 1 moves to a predetermined position, the gear 112 on the base 11 meshes with the rack, the rack pushes the gear 112 to rotate, and the gear 112 drives the driving ring 113 to rotate through the teeth on the driving ring 113, thereby driving the outer shell group 13 and the inner shell group 12 to move.

[0047] As another embodiment further provided by the present invention, a tenon block 132 coupled to the driving ring 113 is provided on the outer shell body 131, and the driving ring 113 rotates so that the tenon block 132 drives the outer shell body 131 to separate from the bottle cap.

[0048] Specifically, a flat thread is provided on the top of the driving ring 113, a groove adapted to the flat thread is provided on the tenon block 132, and a tenon groove for the tenon block 132 to move is provided on the base 11.

[0049] Further, during the rotation of the driving ring 113, the flat thread on the driving ring 113 moves along the tenon groove on the tenon block 132, and then pushes the tenon block 132 to drive the outer shell body 131 to move along the tenon groove on the base 11.

[0050] As another embodiment further provided by the present invention, a lever 125 is symmetrically and movably provided inside the connecting block 122, and the two levers 125 move to make the connecting pipe 126 expand and contract to couple or decouple with the channel 117.

[0051] Specifically, the connecting pipe 126 is a telescopic pipe.

[0052] Further, when cooling and temperature reduction work needs to be carried out, the lever 125 drives the connecting pipe 126 to elongate, and the end of the connecting pipe 126 is inserted into the channel 117 on the inner shell body 121, and the channels 117 on the multiple inner shell bodies 121 are connected together to form a spiral cooling pipeline 115, so as to cool the liquid raw material.

[0053] As yet another embodiment further provided by the present invention, a second slider 129 is movably arranged on the connecting block 122. The driving ring 113 rotates downward and is coupled with the second slider 129 so that the two toggle levers 125 in the same connecting block 122 approach each other. A connecting rod 116 is arranged between the connecting block 122 and the second slider 129, and a pulling rope 127 passing through the connecting rod 116 is arranged between the second slider 129 and the toggle lever 125.

[0054] Specifically, a planar thread is arranged on the bottom surface of the driving ring 113, a chute adapted to the planar thread is formed on the second slider 129, a second sliding rod 124 is arranged on the connecting block 122, toggle levers 125 are symmetrically and slidably arranged on the second sliding rod 124, a connecting rod 116 is arranged between the second slider 129 and the second sliding rod 124. The connecting rod 116 is specifically a self-elastic telescopic rod, a spring is arranged between the toggle lever 125 and the second sliding rod 124, a connecting ring 114 is arranged at the bottom of the driving ring 113, and a thread adapted to the base 11 is arranged on the outer wall of the connecting ring 114.

[0055] Further, during the process of the gear 112 driving the driving ring 113 to rotate, the driving ring 113 drives the connecting ring 114 to rotate. The thread on the connecting ring 114 moves downward along the thread on the base 11. The driving ring 113 gradually abuts against the second slider 129 and presses the second slider 129 to move downward. The connecting rod 116 between the second slider 129 and the sliding rod is stretched. The pulling rope 127 drives the toggle lever 125 to move towards the center of the second sliding rod 124. The end of the connecting pipe 126 is separated from the channel 117 on the inner housing 121. The driving ring 113 continues to move downward. The planar thread at the bottom of the driving ring 113 is coupled with the chute on the second slider 129. The planar thread on the driving ring 113 moves along the chute on the second slider 129, driving the second slider 129, the connecting rod 116, the second sliding rod 124, and the connecting block 122 to move towards the center of the base 11, leaving enough moving space for the inner housing 121.

[0056] As yet another embodiment further provided by the present invention, a first slider 128 is arranged on the inner housing 121. The driving ring 113 continues to rotate downward to be coupled with both the second slider 129 and the first slider 128 simultaneously.

[0057] Specifically, the second slider 129 is higher than the first slider 128. A chute adapted to the planar thread at the bottom of the driving ring 113 is formed on the first slider 128. A first sliding rod 123 is arranged on the inner housing 121, and the first slider 128 is arranged at the bottom of the first sliding rod 123.

[0058] Further, during the process of the driving ring 113 moving downward, the driving ring 113 is first coupled with the second slider 129, and then is coupled with both the second slider 129 and the first slider 128 simultaneously.

[0059] As another embodiment further provided by the present invention, the driving ring 113 rotates to drive the second slider 129 to drive the connecting block 122 to move, and the first slider 128 to drive the inner housing 121 to move.

[0060] Specifically, a hose communicating with the pipeline on the conveying rail 21 is provided on one of the inner housings 121. The hose communicates with the internal channel 117 of the inner housing 121. The tops of the plurality of outer housings 131 are combined to form an injection molding pipe 133. A sealing plate 111 extending to the top of the inner housing group 12 and used to block the notch at the top of the inner housing group 12 is provided on the base 11. A pipeline for the coolant to flow is provided inside the outer housing 131. A torsion spring is provided between the driving ring 113 and the base 11.

[0061] Further, during production, the injection molding equipment injects liquid raw materials into the mold group 1 on the conveying rail 21 through the injection molding pipe 133. The inner housing group 12, the outer housing group 13 and the base 11 enclose an injection molding space to shape the liquid raw materials. Then, the pipeline on the conveying rail 21 injects coolant into the outer housing 131 and the inner housing 121. The coolant in the pipeline of the outer housing 131 cools the outer wall of the bottle cap. The coolant in the inner housing 121 enters the spiral cooling pipeline 115 through the channel 117 and the connecting pipe 126. The spiral cooling pipeline 115 is fitted with the thread protrusions on the inner housing group 12. The distance between the cooling pipeline 115 and the thread protrusions is relatively close, which can absorb the heat of the liquid raw materials faster, so that the threads on the inner wall of the bottle cap can be cooled and shaped faster.

[0062] After the liquid raw material is cooled and shaped, the mold set 1 moves to a predetermined position. The gear 112 on the base 11 meshes with the rack, and the rack pushes the gear 112 to rotate. The gear 112 drives the drive ring 113 to rotate through the teeth on the drive ring 113. The flat thread on the drive ring 113 moves along the mortise groove on the mortise block 132, and then pushes the mortise block 132 to drive the outer shell 131 to move along the mortise groove on the base 11. Multiple outer shells 131 are dispersed, and the outer shell 131 is separated from the bottle cap. At the same time, the drive ring 113 drives the connecting ring 114 to rotate, and the thread on the connecting ring 114 moves downward along the thread on the base 11. The drive ring 113 gradually abuts against the second slider 129 and presses the second slider 129 to move downward. The connecting rod 116 between the second slider 129 and the slide rod is stretched, and the pull rope 127 drives the lever 125 to move towards the center of the second slide rod 124. The end of the connecting pipe 126 is separated from the channel 117 on the inner shell 121. The drive ring 113 continues to move downward. The flat thread at the bottom of the drive ring 113 is coupled with the chute on the second slider 129. The flat thread on the drive ring 113 moves along the chute on the second slider 129, driving the second slider 129, the connecting rod 116, the second slide rod 124, and the connecting block 122 to move towards the center of the base 11, leaving enough moving space for the inner shell 121. The drive ring 113 continues to move downward. The flat thread at the bottom of the drive ring 113 is simultaneously coupled with the second slider 129 and the first slider 128. The flat thread on the drive ring 113 moves along the chutes on the second slider 129 and the first slider 128, driving the connecting block 122 and the inner shell 121 to move closer to the center of the base 11. The thread protrusions on the inner shell group 12 are separated from the threads on the inner wall of the bottle cap, and then the bottle cap can be directly taken out from the mold set 1. The technological steps for taking out the bottle cap are simple.

[0063] During the rotation of the drive ring 113, the torsion spring between it and the base 11 stores elastic potential energy. The conveying rail 21 continues to move, and the gear 112 is separated from the rack. The torsion spring releases the stored elastic potential energy, driving the drive ring 113 to rotate in the reverse direction, and then making the connecting block 122, the inner shell 121, and the outer shell 131 move closer again. The inner shell group 12, the outer shell group 13, and the base 11 enclose an injection molding space for the next injection molding operation.

[0064] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling and conveying system for injection molding of pesticide bottles, characterized in that: The invention comprises a frame (2), on which a mold group (1) and a conveying rail (21) for conveying the mold group (1) are arranged, and the mold group (1) comprises: A base (11) fixedly mounted on the conveying rail (21); An outer shell assembly (13), comprising a plurality of outer shell bodies (131) movably mounted on the base (11); A plurality of inner shells (121) and a plurality of connecting blocks (122) movably mounted on a base (11); the plurality of connecting blocks (122) and the plurality of inner shells (121) are staggeredly distributed to form an inner shell group (12) having a threaded protrusion on the outer wall; the outer shell group (13), the inner shell group (12) and the base (11) are surrounded to form an injection molding space, wherein: The plurality of connecting blocks (122) are brought together so that a gap exists between two adjacent inner shells (121), and the inner shells (121) move along with the connecting blocks (122) so that the threaded protrusions of the inner shell group (12) are separated from the bottle cap; The inner shell (121) is provided with a channel (117) for the flow of cooling liquid, and the connecting block (122) is movably provided with a plurality of connecting pipes (126), the connecting pipes (126) being connected to the channel (117) to form a spiral cooling pipeline (115) inside the inner shell assembly (12); A driving ring (113) for driving the outer shell group (13) and the inner shell group (12) to move is rotatably arranged on the base (11), and the driving ring (113) rotates to disperse the outer shell group (13) and to retract the inner shell group (12).

2. A cooling and conveying system for pesticide bottle injection molding according to claim 1, characterized in that: A gear (112) for driving the driving ring (113) to rotate is rotatably provided on the base (11), and a rack matching the gear (112) is provided on the frame (2).

3. A cooling and conveying system for pesticide bottle injection molding according to claim 1, characterized in that: The outer shell (131) is provided with a tenon block (132) coupled to the drive ring (113); the drive ring (113) rotates so that the tenon block (132) drives the outer shell (131) to separate from the bottle cap.

4. A cooling and conveying system for pesticide bottle injection molding according to claim 1, characterized in that: The connection block (122) is symmetrically and movably provided with levers (125) inside, and the two levers (125) move to cause the connection tube (126) to expand and contract to couple with or decouple from the channel (117).

5. A cooling and conveying system for pesticide bottle injection molding according to claim 4, characterized in that: A second sliding block (129) is movably provided on the connecting block (122), and the driving ring (113) rotates downward to couple with the second sliding block (129) so that the two shifting rods (125) in the same connecting block (122) are brought closer together.

6. A cooling and conveying system for pesticide bottle injection molding according to claim 5, characterized in that: A connecting rod (116) is provided between the connecting block (122) and the second sliding block (129), and a pulling rope (127) passing through the connecting rod (116) is provided between the second sliding block (129) and the shifting rod (125).

7. A cooling and conveying system for pesticide bottle injection molding according to claim 6, characterized in that: The inner housing (121) is provided with a first sliding block (128), and the driving ring (113) continues to rotate and move downward to couple with the second sliding block (129) and the first sliding block (128) at the same time.

8. A cooling and conveying system for pesticide bottle injection molding according to claim 7, characterized in that: The driving ring (113) rotates so that the second sliding block (129) drives the connecting block (122) to move, and the first sliding block (128) drives the inner shell (121) to move.

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