Injection molding mold for plastic atomizing pump head

Abstract

The invention discloses an injection molding mold of a plastic atomizing pump head, and relates to the technical field of injection molding molds, the injection molding mold comprises a mold base, a supporting plate is fixedly connected to the upper position of the surface of the mold base, connecting frames are fixedly connected to the top and the bottom of the mold base, and a penetrating pipe is fixedly connected to the top of the mold base. According to the injection molding mold of the plastic atomizing pump head, during injection molding, the movable mold frame is driven to move upwards to be connected with the bottom of the blanking waste discharge mechanism, hot melt plastic flows into the demolding assembly through the blanking waste discharge mechanism, at the moment, the internal thread assembly is located in the demolding assembly, a cavity formed by the demolding assembly and the internal thread assembly is filled with the plastic, and the demolding assembly is located in the cavity; after injection molding, the demolding assembly is separated from the formed parts, the multiple formed parts are connected with one another and located at the bottom of the discharging and waste discharging mechanism, the multiple plastic spraying pump heads can be obtained by separating the discharging and waste discharging mechanism from the formed parts, and the problem how to improve the forming production efficiency of the plastic spraying pump heads is solved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding molds, in particular to an injection molding mold for a plastic spray pump head. Background Art

[0002] The pump head is used to pump out the liquid or paste in the bottle. The main structures of the current pump body include a cavity, a middle movable shaft, an upper seal, a lower seal, a straw, a spring and other parts. The pump head cavity is mostly formed by injection molding. The injection mold is a tool for producing plastic products. During the injection molding process, the existing injection mold needs to wait until the finished product is completely cooled and formed before demolding. The water cooling channel in the mold needs to circulate cooling water to achieve rapid cooling and molding of the mold. However, the existing cooling water generally uses tap water, which contains impurities. After cooling is completed, some impurities remain in the cooling channel, causing scale to form in the cooling channel, affecting the cooling effect of the mold. The Chinese patent announcement number is: CN115384014B, which discloses "A multi-cavity rapid molding injection mold with high cooling efficiency". In this patent, cooling water is input into the cooling channel to quickly cool the mold in the mold cavity and form it. After the mold is formed, a cleaning ball is driven from the liquid inlet pipe into the cooling channel to remove the residual moisture in the cooling channel, thereby avoiding corrosion to the mold caused by condensed water in the channel, thereby increasing the service life of the injection mold and reducing maintenance costs.

[0003] The existing injection molding mold of the plastic spray pump head has structural design defects. The molding and demoulding method of the ejector easily leads to structural dimensional errors of the plastic spray pump head. In addition, some impurities remain in the cooling channel after the tap water is cooled, causing scale to form in the cooling channel, affecting the cooling effect of the mold. Summary of the invention

[0004] The present invention provides an injection molding die for a plastic spray pump head, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an injection molding mold for a plastic spray pump head, comprising a mold frame, a support plate is fixedly connected to the upper position of the mold frame surface, a connecting frame is fixedly connected to the top and bottom of the mold frame, a through pipe is fixedly connected to the top of the mold frame, and further comprising: A multi-cavity molding mechanism, wherein a fixing rod is fixedly connected to the middle position of the bottom of the multi-cavity molding mechanism, and the inner side of the multi-cavity molding mechanism is slidably mounted on the surface of the mold frame, and the multi-cavity molding mechanism is used for injection molding of multiple plastic spray pump heads and cooling and shaping of hot-melt plastics; A material blanking and waste discharge mechanism, which is fixedly mounted on the inner side of the support plate and is used for conveying a plurality of plastic spray pump heads after cooling and for separating the pump heads from injection molding waste; The multi-cavity molding mechanism includes a movable mold base plate, the inner side surface of the movable mold base plate is slidably mounted on the surface of the mold frame, the top of the movable mold base plate is fixedly connected to a movable mold frame, the lower position of the inner side surface of the movable mold frame is fixedly connected to an internal thread component, the upper position of the inner side surface of the movable mold frame is fixedly connected to a demolding component, the demolding component is used to inject hot-melt plastic, and the internal thread component is used to form threads at the lower position of the inner side surface of the pump head.

[0006] Preferably, a blind hole is provided at the top of the movable mold base plate, and the multi-cavity molding mechanism also includes a diverter pipe, the end face of the diverter pipe is fixedly mounted on the surface of the movable mold frame, and the end of the diverter pipe away from the movable mold frame is fixedly connected with a connecting pipe, a threaded connection groove is provided at the lower position of the inner side surface of the plastic spray pump head, and a liquid flow channel is provided inside the pump head, and the liquid flow channel is composed of vertical and horizontal flow channels intersecting. The complex structure of the plastic spray pump head makes the injection molding production efficiency low. In the device, the movable mold base plate can be lifted and moved under the drive of the fixed rod, and the connecting frame fixes the mold to the output end of the injection molding machine, and the injection nozzle passes through the through pipe to the blanking and waste discharge mechanism.

[0007] Preferably, a cavity is opened at the lower position of the inner side surface of the movable mold frame, and the internal thread component includes a gate hoist, the bottom of the gate hoist is fixedly installed on the bottom of the cavity, and the inner side surface of the gate hoist is connected with a screw through a thread.

[0008] Preferably, the internal thread component also includes a threaded column, the bottom end of the threaded column is fixedly mounted on the top of the screw, the top of the threaded column is fixedly connected with a straight bar, the opening and closing machine is arranged in the middle position of the cavity, the opening and closing machine drives the screw to move up and down, when the screw rotates upward, the threaded column rotates to the position between the first molding shell and the second molding shell, the blind hole is used to accommodate the downward movement of the screw, the connecting pipe injects the cooling gas into the interior of the movable mold frame, the shunt pipe is evenly arranged on the surface of the movable mold frame, and the shunt pipe enables the cooling gas to be evenly transported to the surface of the first molding shell and the second molding shell.

[0009] Preferably, the demolding assembly includes a first screw slide, which is fixedly installed at an upper position on the inner side of the movable mold frame. There are two first screw slides, and the output ends of the two first screw slides are respectively fixedly connected to the first molding shell and the second molding shell.

[0010] Preferably, injection holes are provided at the tops of the first molding shell and the second molding shell, a telescopic cylinder is fixedly connected to the upper position of the surface of the first molding shell, and a sliding pin is fixedly connected to the output end of the telescopic cylinder.

[0011] Preferably, the blanking and waste discharge mechanism includes a linear guide rail, which is fixedly mounted on the inner side of the support plate, the output end of the linear guide rail is fixedly connected to an injection assembly, the middle position of the top of the injection assembly is fixedly connected to a mold opening, the surface of the linear guide rail away from the support plate is fixedly connected to a hydraulic cylinder, the movable mold frame moves upward driven by the fixed rod, and a cavity is formed between the movable mold frame and the injection assembly. The injection nozzle injects the hot melt plastic into the interior of the mold opening, and the injection assembly injects the hot melt plastic into the interior of the demolding assembly. The connecting tube injects cooling gas, and the gas causes the hot melt plastic to be shaped and solidified into a pump head. At this time, the tops of multiple pump heads are engaged with the bottoms of the injection assembly, and then the demolding assembly is separated from the plastic pump head.

[0012] Preferably, the blanking and waste discharge mechanism further comprises a sawing knife, wherein the sawing knife is fixedly mounted on the output end of the hydraulic cylinder, the sawing knife is opposite to the bottom of the injection assembly, and a clamping assembly is fixedly connected to the surface of the linear guide rail.

[0013] Preferably, the injection assembly includes a fixed die base plate, which is fixedly mounted on the output end of the linear guide rail, a first cylinder is fixedly connected to the top of the fixed die base plate near the middle position, a pull rod is fixedly connected to the output end of the first cylinder, the top of the sawing knife is coplanar with the bottom of the injection tube, and when the pump head injection molded part is cooled and formed, the injection shell, the injection tube and multiple pump head injection molded parts are connected, and the fixed die base plate is driven by the linear guide rail to approach the sawing knife. At this time, multiple pump head injection molded parts are located below the injection molded part, and when the pump head injection molded part passes through the clamping plate, the two second screw slides drive the clamping plates approaching each other to move toward each other, and the clamping plates clamp the surface of the pump head.

[0014] Preferably, the injection assembly also includes a second cylinder, which is fixedly installed on the surface of the fixed mold base plate near the edge, and the output end of the second cylinder is fixedly connected to an injection molding shell, and the bottom of the injection molding shell is fixedly connected to an injection tube, and when the pump head is molded, the bottom of the injection tube is engaged with the top of the first molding shell and the second molding shell, and the injection molding shell, the injection tube and the injection hole are internally connected, and the hot melt plastic is injected into the interior of the injection molding shell through the mold mouth, and the hot melt plastic fills the cavity and is cooled and formed into a pump head injection molding part, and the liquid flow channel at the upper position inside the injection molding part is formed by a sliding pin, and the telescopic cylinder is used to control the extension and retraction of the sliding pin.

[0015] Preferably, the clamping assembly includes a support table, the top of which is fixedly mounted on the surface of the linear guide rail at a position away from the support plate, and the bottom of the inner side surface of the support table is fixedly connected to a second screw slide.

[0016] Preferably, there are two second screw slides, and the output ends of the two second screw slides are fixedly connected to a clamping plate, and the surface of the clamping plate is fixedly connected to a rubber plate.

[0017] The present invention provides an injection molding mold for a plastic spray pump head. The mold has the following beneficial effects: 1. The injection molding mold of the plastic spray pump head, during injection molding, the movable mold frame is driven to move upward and engage with the bottom of the blanking and waste discharge mechanism, and the hot melt plastic flows to the interior of the demoulding component through the blanking and waste discharge mechanism. At this time, the internal thread component is inside the demoulding component, and the plastic fills the cavity formed by the demoulding component and the internal thread component. After injection molding, the demoulding component is separated from the molded part, and multiple molded parts are connected to each other and are at the bottom of the blanking and waste discharge mechanism. The blanking and waste discharge mechanism is separated from the molded part to obtain multiple plastic spray pump heads, which solves the problem of how to improve the molding production efficiency of the plastic spray pump head.

[0018] 2. In the injection molding mold of the plastic spray pump head, a cavity is formed between the first molding shell, the second molding shell and the threaded column. After the hot-melt plastic fills the cavity, the cooling gas cools the hot-melt plastic to shape. The thin-walled structure of the first molding shell and the second molding shell makes the gas cooling efficiency higher, replacing the flow cooling of tap water. The gas cooling method can avoid the deposition of impurities in the flow channel, and solves the problem that some impurities remain in the cooling channel after the tap water is cooled, causing scale to form in the cooling channel and affecting the cooling effect of the mold.

[0019] 3. The injection molding mold of the plastic spray pump head, the movable mold frame is driven by the passive mold base plate to move downward, the linear guide rail drives the injection assembly and the injection molded part at the bottom to move close to the hydraulic cylinder, and after the clamping assembly clamps the injection molded part of the pump head, the hydraulic cylinder drives the sawing knife close to the injection molded part, and the sawing knife passes through the joint surface between the injection assembly and the injection molded part, so that the injection assembly is separated from multiple injection molded parts, and the cavity makes multiple hot-melt plastic pump heads more evenly cooled, which solves the problem that the molding and demoulding method of the ejector easily leads to structural size errors of the plastic spray pump head.

[0020] 4. The injection molding mold of the plastic spray pump head and the rubber plate make the pump head clamped and not easy to move during cutting. Then, the hydraulic cylinder drives the sawing knife close to the joint surface, and the sawing knife passes through the joint surfaces of multiple pump head injection molded parts in turn. The pump head injection molded parts are separated from the injection molded shell, and the pump head is cut and blanked under the premise of being clamped. One is to make the joint surface difficult to deflect when the pump head is cut, and the other is to prevent the pump head from colliding with each other and causing surface scratches when blanking.

[0021] 5. In the injection molding mold of the plastic spray pump head, the first screw slide drives the first molding shell and the second molding shell away from each other to realize the demoulding of the pump head injection molded part, replacing the method of ejecting the material, so that the internal thread groove and the liquid flow channel of the injection molded part are not easy to deform and dislocate. After the pump head is completed by injection molding, it is cut away from the injection tube, and the waste material is retained inside the injection molded shell. The second cylinder drives the injection molded shell to move downward. At this time, due to the pulling of the pull rod, the waste material is separated from the injection molded shell. Subsequently, the first cylinder drives the pull rod to retract inward, and the waste material is completely separated, so that the molding efficiency of the pump head injection molded part is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional view of the entire top of the injection molding mold of the plastic spray pump head of the present invention; Figure 2 A three-dimensional diagram of the overall bottom of the injection molding mold of the plastic spray pump head of the present invention; Figure 3 It is a schematic diagram of the overall structure of the multi-cavity molding mechanism of the present invention; Figure 4 It is a structural schematic diagram of a partial top of the multi-cavity molding mechanism of the present invention; Figure 5 It is a structural schematic diagram of a partial bottom of the multi-cavity molding mechanism of the present invention; Figure 6 It is a schematic structural diagram of the internal thread assembly of the present invention; Figure 7 It is a schematic structural diagram of the demoulding component of the present invention; Figure 8 It is a structural schematic diagram of the blanking and waste discharge mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the top of the injection assembly of the present invention; Fig.10 It is a structural schematic diagram of the bottom of the injection assembly of the present invention; Fig.11 It is a schematic structural diagram of the clamping assembly of the present invention.

[0023] In the figure: 1, mold frame; 2, support plate; 3, connecting frame; 4, through pipe; 5, fixing rod; 6, multi-cavity molding mechanism; 61, movable mold base plate; 62, blind hole; 63, movable mold frame; 64, internal thread assembly; 641, hoist; 642, screw; 643, threaded column; 644, straight bar; 65, shunt pipe; 66, connecting pipe; 67, demoulding assembly; 671, first screw slide; 672, first molding shell; 673, second molding shell; 674, Injection hole; 675, telescopic cylinder; 676, sliding pin; 7, blanking and waste discharge mechanism; 71, linear guide rail; 72, injection assembly; 721, fixed mold base plate; 722, first cylinder; 723, pull rod; 724, second cylinder; 725, injection shell; 726, injection tube; 73, mold mouth; 74, hydraulic cylinder; 75, sawing knife; 76, clamping assembly; 761, support table; 762, second screw slide; 763, clamping plate; 764, rubber plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] First embodiment: Figure 1-Figure 5 As shown, the present invention provides a technical solution: an injection molding mold for a plastic spray pump head, comprising a mold frame 1, a support plate 2 is fixedly connected to the upper position of the surface of the mold frame 1, a connecting frame 3 is fixedly connected to the top and bottom of the mold frame 1, a through pipe 4 is fixedly connected to the top of the mold frame 1, and further comprising: A multi-cavity molding mechanism 6, wherein a fixing rod 5 is fixedly connected to the middle position of the bottom of the multi-cavity molding mechanism 6, and the inner side surface of the multi-cavity molding mechanism 6 is slidably mounted on the surface of the mold frame 1, and the multi-cavity molding mechanism 6 is used for injection molding of multiple plastic spray pump heads and cooling and shaping of hot-melt plastics; The blanking and waste discharging mechanism 7 is fixedly mounted on the inner side of the support plate 2. The blanking and waste discharging mechanism 7 is used for conveying a plurality of plastic spray pump heads after cooling and for separating the pump heads from the injection waste; The multi-cavity molding mechanism 6 includes a movable mold base plate 61, the inner side surface of the movable mold base plate 61 is slidably mounted on the surface of the mold frame 1, the top of the movable mold base plate 61 is fixedly connected to a movable mold frame 63, the lower position of the inner side surface of the movable mold frame 63 is fixedly connected to an internal thread component 64, the upper position of the inner side surface of the movable mold frame 63 is fixedly connected to a demoulding component 67, the demoulding component 67 is used to inject hot melt plastic, and the internal thread component 64 is used to form the thread at the lower position of the inner side surface of the pump head; A blind hole 62 is provided at the top of the movable mold base plate 61 . The multi-cavity molding mechanism 6 also includes a shunt pipe 65 . The end face of the shunt pipe 65 is fixedly mounted on the surface of the movable mold frame 63 . One end of the shunt pipe 65 away from the movable mold frame 63 is fixedly connected to a connecting pipe 66 .

[0026] When in use, a threaded connection groove is provided at the lower position of the inner side surface of the plastic spray pump head, and a liquid flow channel is provided inside the pump head, which is composed of the intersection of vertical and horizontal flow channels. The complex structure of the plastic spray pump head makes the injection molding production efficiency low. In the device, the movable mold base plate 61 can be lifted and moved under the drive of the fixed rod 5, and the connecting frame 3 fixes the mold on the output end of the injection molding machine. The injection nozzle passes through the through pipe 4 to the blanking and waste discharge mechanism 7. During injection molding, the movable mold frame 63 is driven to move upward and engage with the bottom of the blanking and waste discharge mechanism 7, and the hot melt plastic flows to the inside of the demoulding component 67 through the blanking and waste discharge mechanism 7. At this time, the internal thread component 64 is inside the demoulding component 67, and the plastic fills the cavity formed by the demoulding component 67 and the internal thread component 64. After injection molding, the demoulding component 67 is separated from the molded part, and multiple molded parts are connected to each other and are at the bottom of the blanking and waste discharge mechanism 7. The blanking and waste discharge mechanism 7 is separated from the molded part to obtain multiple plastic spray pump heads, which solves the problem of how to improve the molding production efficiency of the plastic spray pump head.

[0027] Second embodiment: Figure 3-Figure 7 As shown, a cavity is provided at the lower position of the inner side surface of the movable mold frame 63, the internal thread assembly 64 includes a gate hoist 641, the bottom of the gate hoist 641 is fixedly installed at the bottom of the cavity, the inner side surface of the gate hoist 641 is connected with a screw rod 642 through a thread, the internal thread assembly 64 also includes a threaded column 643, the bottom end of the threaded column 643 is fixedly installed at the top end of the screw rod 642, the top of the threaded column 643 is fixedly connected with a straight bar 644, and the gate hoist 641 is arranged in the middle position of the cavity; The demolding assembly 67 includes a first screw slide 671, which is fixedly installed at the upper position of the inner side of the movable mold frame 63. There are two first screw slides 671. The output ends of the two first screw slides 671 are respectively fixedly connected to the first molding shell 672 and the second molding shell 673. The tops of the first molding shell 672 and the second molding shell 673 are both provided with injection holes 674. The upper position of the surface of the first molding shell 672 is fixedly connected to a telescopic cylinder 675, and the output end of the telescopic cylinder 675 is fixedly connected to a sliding pin 676.

[0028] When in use, the hoist 641 drives the screw 642 to move up and down. When the screw 642 rotates upward, the threaded column 643 rotates to the position between the first molding shell 672 and the second molding shell 673. The blind hole 62 is used to accommodate the downward movement of the screw 642. The connecting pipe 66 injects the cooling gas into the interior of the movable mold frame 63. The shunt pipe 65 is evenly arranged on the surface of the movable mold frame 63. The shunt pipe 65 enables the cooling gas to be evenly transported to the surfaces of the first molding shell 672 and the second molding shell 673. A cavity is formed between the first molding shell 672, the second molding shell 673 and the threaded column 643. After the hot melt plastic fills the cavity, the cooling gas cools the hot melt plastic to shape. The thin-walled structure of the first molding shell 672 and the second molding shell 673 makes the gas cooling efficiency higher, replacing the flow cooling of tap water. The gas cooling method can avoid the deposition of impurities in the flow channel, and solves the problem that some impurities remain in the cooling channel after the tap water is cooled, so that scale is formed in the cooling channel and affects the cooling effect of the mold.

[0029] The third embodiment: Figure 3 , Figure 4 , Figure 8 As shown, the inner side surface of the movable mold base plate 61 is slidably mounted on the surface of the mold frame 1, the top of the movable mold base plate 61 is fixedly connected to the movable mold frame 63, the lower position of the inner side surface of the movable mold frame 63 is fixedly connected to the internal thread component 64, the upper position of the inner side surface of the movable mold frame 63 is fixedly connected to the demoulding component 67, the demoulding component 67 is used to inject hot melt plastic, and the internal thread component 64 is used to form the thread at the lower position of the inner side surface of the pump head; A blind hole 62 is provided on the top of the movable mold base plate 61. The multi-cavity molding mechanism 6 also includes a shunt pipe 65. The end surface of the shunt pipe 65 is fixedly mounted on the surface of the movable mold frame 63. One end of the shunt pipe 65 away from the movable mold frame 63 is fixedly connected to a connecting pipe 66. The blanking and waste discharge mechanism 7 includes a linear guide rail 71, which is fixedly mounted on the inner side of the support plate 2. The output end of the linear guide rail 71 is fixedly connected to an injection assembly 72, and the middle position of the top of the injection assembly 72 is fixedly connected to a die opening 73. The surface of the linear guide rail 71 away from the support plate 2 is fixedly connected to a hydraulic cylinder 74. The blanking and waste discharge mechanism 7 also includes a sawing knife 75, which is fixedly mounted on the output end of the hydraulic cylinder 74. The sawing knife 75 is opposite to the bottom of the injection assembly 72, and the surface of the linear guide rail 71 is fixedly connected to a clamping assembly 76.

[0030] When in use, the movable mold frame 63 moves upward under the drive of the fixed rod 5, and the cavity formed between the movable mold frame 63 and the injection assembly 72, the injection nozzle injects the hot melt plastic into the inside of the mold opening 73, the injection assembly 72 injects the hot melt plastic into the inside of the demoulding assembly 67, and the connecting pipe 66 injects cooling gas, the gas makes the hot melt plastic shape and solidify into a pump head, at this time, the top of the multiple pump heads is engaged with the bottom of the injection assembly 72, then the demoulding assembly 67 is separated from the plastic pump head, and the movable mold frame 63 is moved by the passive mold base plate 61 Driven to move downward, the linear guide 71 drives the injection assembly 72 and the injection molded part at the bottom to move close to the hydraulic cylinder 74. After the clamping assembly 76 clamps the pump head injection molded part, the hydraulic cylinder 74 drives the sawing knife 75 close to the injection molded part. The sawing knife 75 passes through the joint surface between the injection assembly 72 and the injection molded part, so that the injection assembly 72 is separated from the multiple injection molded parts. The cavity makes the multiple hot-melt plastic pump heads more evenly cooled, which solves the problem that the molding and demolding method of the top material easily leads to structural size errors of the plastic spray pump head.

[0031] Fourth embodiment: Figure 8-Figure 11 As shown, the injection assembly 72 includes a fixed mold base plate 721, which is fixedly mounted on the output end of the linear guide rail 71, a first cylinder 722 is fixedly connected to the top of the fixed mold base plate 721 near the middle, and a pull rod 723 is fixedly connected to the output end of the first cylinder 722. The injection assembly 72 also includes a second cylinder 724, which is fixedly mounted on the surface of the fixed mold base plate 721 near the edge, an injection shell 725 is fixedly connected to the output end of the second cylinder 724, and an injection tube 726 is fixedly connected to the bottom of the injection shell 725; The clamping assembly 76 includes a support platform 761, the top of the support platform 761 is fixedly installed on the surface of the linear guide rail 71 at a position away from the support plate 2, and the bottom of the inner side of the support platform 761 is fixedly connected to a second screw slide 762. There are two second screw slides 762, and the output ends of the two second screw slides 762 are fixedly connected to a clamping plate 763, and the surface of the clamping plate 763 is fixedly connected to a rubber plate 764.

[0032] When in use, the top of the saw blade 75 is coplanar with the bottom of the injection tube 726. When the pump head injection molded part is cooled and finalized, the injection shell 725, the injection tube 726 and the plurality of pump head injection molded parts are connected, and the fixed mold base plate 721 is driven by the linear guide rail 71 to approach the saw blade 75. At this time, the plurality of pump head injection molded parts are located below the injection shell 725. When the pump head injection molded part passes through the clamping plate 763, the two second screw slides 762 drive the clamping plates 763 approaching each other to move in opposite directions. The clamping plate 763 clamps the surface of the pump head, and the rubber plate 764 makes the pump head clamped and not easy to move during cutting. Then, the hydraulic cylinder 74 drives the sawing knife 75 to approach the joint surface, and the sawing knife 75 passes through the joint surfaces of multiple pump head injection molded parts in turn. The pump head injection molded parts are separated from the injection molded shell 725, and the pump head is cut and blanked under the premise of being clamped. One is to prevent the joint surface from being deflected when the pump head is cut, and the other is to prevent the pump head from colliding with each other and causing surface scratches when blanking.

[0033] Fifth embodiment: Figure 7 , Fig. 9 As shown, the first screw slide 671 is fixedly installed at the upper position of the inner side of the movable mold frame 63. There are two first screw slides 671. The output ends of the two first screw slides 671 are respectively fixedly connected to the first molding shell 672 and the second molding shell 673. The tops of the first molding shell 672 and the second molding shell 673 are both provided with injection holes 674. The upper position of the surface of the first molding shell 672 is fixedly connected to a telescopic cylinder 675. The output end of the telescopic cylinder 675 is fixedly connected to a sliding pin 676. The fixed mold base plate 721 is fixedly installed on the output end of the linear guide rail 71, and a first cylinder 722 is fixedly connected to the top of the fixed mold base plate 721 near the middle position, and a pull rod 723 is fixedly connected to the output end of the first cylinder 722. The injection assembly 72 also includes a second cylinder 724, and the second cylinder 724 is fixedly installed on the surface of the fixed mold base plate 721 near the edge, and an injection shell 725 is fixedly connected to the output end of the second cylinder 724, and an injection tube 726 is fixedly connected to the bottom of the injection shell 725.

[0034] When in use, when the pump head is being molded, the bottom of the injection tube 726 is engaged with the top of the first molding shell 672 and the second molding shell 673, the injection shell 725, the injection tube 726 and the injection hole 674 are connected, and the hot melt plastic is injected into the interior of the injection shell 725 by the die 73. The hot melt plastic fills the cavity and is cooled and formed into a pump head injection molded part. The liquid flow channel at the upper position inside the injection molded part is formed by the sliding pin 676. The telescopic cylinder 675 is used to control the telescopic movement of the sliding pin 676. The first screw slide 671 drives the first molding shell 672 and the second The molding shell 673 is moved away to realize the demoulding of the pump head injection molded part, replacing the method of pushing the material, so that the internal thread groove and the liquid flow channel of the injection molded part are not easy to deform and dislocate. After the pump head is injected, it is cut away from the injection tube 726, and the waste material is retained inside the injection shell 725. The second cylinder 724 drives the injection shell 725 to move downward. At this time, due to the pulling of the pull rod 723, the waste material is separated from the injection shell 725. Subsequently, the first cylinder 722 drives the pull rod 723 to retract inward, and the waste material is completely separated, so that the molding efficiency of the pump head injection molded part is higher.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. An injection molding mold for a plastic spray pump head, comprising a mold frame (1), characterized in that: A support plate (2) is fixedly connected to the upper position of the surface of the mold frame (1), a connecting frame (3) is fixedly connected to the top and bottom of the mold frame (1), a through pipe (4) is fixedly connected to the top of the mold frame (1), and further comprises: A multi-cavity molding mechanism (6), wherein a fixing rod (5) is fixedly connected to the middle position of the bottom of the multi-cavity molding mechanism (6), and the inner side surface of the multi-cavity molding mechanism (6) is slidably mounted on the surface of the mold frame (1), and the multi-cavity molding mechanism (6) is used for injection molding of multiple plastic spray pump heads and cooling and shaping of hot-melt plastics; A material blanking and waste discharge mechanism (7), wherein the material blanking and waste discharge mechanism (7) is fixedly mounted on the inner side surface of the support plate (2), and the material blanking and waste discharge mechanism (7) is used for conveying a plurality of plastic spray pump heads after cooling and for separating the pump heads from injection molding waste; The multi-cavity molding mechanism (6) comprises a movable mold base plate (61), the inner side surface of the movable mold base plate (61) is slidably mounted on the surface of the mold frame (1), the top of the movable mold base plate (61) is fixedly connected to a movable mold frame (63), the lower position of the inner side surface of the movable mold frame (63) is fixedly connected to an internal thread component (64), the upper position of the inner side surface of the movable mold frame (63) is fixedly connected to a demoulding component (67), the demoulding component (67) is used to inject hot melt plastic, and the internal thread component (64) is used to mold the thread at the lower position of the inner side surface of the pump head.

2. The injection molding die for a plastic spray pump head according to claim 1, characterized in that: A blind hole (62) is provided at the top of the movable mold base plate (61). The multi-cavity molding mechanism (6) further comprises a shunt pipe (65). The end surface of the shunt pipe (65) is fixedly mounted on the surface of the movable mold frame (63). One end of the shunt pipe (65) away from the movable mold frame (63) is fixedly connected to a connecting pipe (66).

3. The injection molding mold for a plastic spray pump head according to claim 2, characterized in that: A cavity is provided at a lower position of the inner side surface of the movable mold frame (63); the internal thread component (64) comprises a gate hoist (641); the bottom of the gate hoist (641) is fixedly mounted on the bottom of the cavity; and the inner side surface of the gate hoist (641) is connected to a screw rod (642) via a thread.

4. The injection molding die for a plastic spray pump head according to claim 3, characterized in that: The internal thread assembly (64) further comprises a threaded column (643), the bottom end of the threaded column (643) being fixedly mounted on the top end of the screw rod (642), the top of the threaded column (643) being fixedly connected with a straight bar (644), and the hoist (641) being arranged in the middle of the cavity.

5. The injection molding die for a plastic spray pump head according to claim 4, characterized in that: The demoulding assembly (67) comprises a first screw slide (671), wherein the first screw slide (671) is fixedly mounted at an upper position of the inner side surface of the movable mold frame (63), and there are two first screw slides (671). The output ends of the two first screw slides (671) are respectively fixedly connected to a first molding shell (672) and a second molding shell (673).

6. The injection molding die for a plastic spray pump head according to claim 5, characterized in that: The tops of the first molding shell (672) and the second molding shell (673) are both provided with injection holes (674), a telescopic cylinder (675) is fixedly connected to the upper position of the surface of the first molding shell (672), and a sliding pin (676) is fixedly connected to the output end of the telescopic cylinder (675).

7. The injection molding die for a plastic spray pump head according to claim 1, characterized in that: The blanking and waste discharge mechanism (7) comprises a linear guide rail (71), the linear guide rail (71) being fixedly mounted on the inner side surface of the support plate (2), the output end of the linear guide rail (71) being fixedly connected to an injection assembly (72), the middle position of the top of the injection assembly (72) being fixedly connected to a die opening (73), and the surface of the linear guide rail (71) being fixedly connected to a hydraulic cylinder (74) at a position away from the support plate (2).

8. The injection molding die for a plastic spray pump head according to claim 7, characterized in that: The blanking and waste discharge mechanism (7) further comprises a sawing knife (75), wherein the sawing knife (75) is fixedly mounted on the output end of the hydraulic cylinder (74), the sawing knife (75) is opposite to the bottom of the injection assembly (72), and a clamping assembly (76) is fixedly connected to the surface of the linear guide rail (71).

9. The injection molding die for a plastic spray pump head according to claim 8, characterized in that: The injection assembly (72) comprises a fixed die base plate (721), the fixed die base plate (721) being fixedly mounted on the output end of the linear guide rail (71), a first cylinder (722) being fixedly connected to the top of the fixed die base plate (721) near the middle, and a pull rod (723) being fixedly connected to the output end of the first cylinder (722).

10. The injection molding die for a plastic spray pump head according to claim 9, characterized in that: The injection assembly (72) further comprises a second cylinder (724), the second cylinder (724) being fixedly mounted on a surface of the fixed mold base plate (721) at a position close to an edge, the output end of the second cylinder (724) being fixedly connected to an injection shell (725), and the bottom of the injection shell (725) being fixedly connected to an injection pipe (726).

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