An injection molding device for producing a cup lid with a spoon

Abstract

The present invention belongs to the technical field of injection molding, and specifically relates to an injection molding device for producing a cup cover with a spoon, comprising an injection molding machine, an upper mold base and a lower mold base, the injection molding machine is equipped with a positioning column, the upper mold base is slidably connected to the positioning column, the lower mold base is fixedly connected to the positioning column, the lower mold base also comprises a movable mold, the lower mold base is provided with a through groove, the movable mold is slidably connected to the through groove, the movable mold is slidably connected to a slide, the slide is provided with a transverse molding groove, the movable mold is provided with a vertical molding groove, the front side of the slide is processed into a wedge-shaped surface, the movable mold is elastically connected to the slide through an elastic component, and the injection molding machine is also provided with a mold opening and closing mechanism; the present invention arranges a movable mold for molding an L-shaped buckle of the cup cover with a spoon on the lower mold base, and the movable mold is composed of a slide that can be slidably opened and closed, when the movable mold is closed, the cup cover with a spoon can be injection molded, and the removal of the cup cover with a spoon will not be hindered when the movable mold is opened.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to an injection molding device for producing a cup cover with a spoon. Background Art

[0002] The plastic cup cover is made by injection molding. The structure of ordinary cup covers is relatively simple, mostly consisting of a top cover 000 and a side ring cover 001 (see the attached manual). Figure 1 As shown in the figure, the injection mold is also relatively simple. As people's demand for cup cover products increases, the structure of the cup cover has more functional improvements, and a cup cover with a spoon has been derived (as shown in the attached manual). Figure 1 As shown in the figure, a symmetrical L-shaped buckle 002 is formed by injection molding at the bottom of an ordinary cup cover, and the spoon can be fixed by the L-shaped buckles on both sides, so that the cup cover can be stably equipped with the spoon for people to use.

[0003] Due to the presence of symmetrical L-shaped buckles during injection molding, the L-shaped buckles will be embedded in the mold cavity, and the cup cover with spoon formed when the mold is opened is not easy to demold. Therefore, we propose an injection molding device for producing the cup cover with spoon, which can easily demold the cup cover with spoon. Summary of the invention

[0004] The purpose of the present invention is to provide an injection molding device for producing a cup cover with a spoon, so as to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] An injection molding device for producing a cup cover with a spoon comprises an injection molding machine, an upper mold base and a lower mold base, the injection molding machine is equipped with a plurality of positioning columns, the four corners of the upper mold base are respectively slidably connected with the positioning columns, the bottom of the upper mold base is provided with an upper mold cavity corresponding to the top cover of the cup cover with a spoon, the top of the upper mold base is provided with an injection molding tube, the four corners of the lower mold base are respectively fixedly connected with the positioning columns, and the upper side of the lower mold base is provided with a lower mold cavity matching the ring cover of the cup cover with a spoon;

[0007] The lower die base also includes a movable die, a through slot is provided in the middle of the lower die base, the movable die is slidably connected to the through slot in the vertical direction, the movable die is slidably connected to slides on both the front and rear sides, the slides on both sides are both provided with transverse forming grooves at both ends, the movable die is also provided with vertical forming grooves corresponding to the transverse forming grooves at both ends at both ends, and the transverse forming groove and the vertical forming groove at the same end together constitute a forming cavity matching the L-shaped buckle of the cup cover with spoon;

[0008] The front side of the slide at the front side and the rear side of the slide at the rear side are both processed into wedge-shaped surfaces. The movable mold is elastically connected to the slides at the front and rear sides through multiple elastic components. When the movable mold slides upward, the slides at the front and rear sides slide out respectively under the elastic force of the elastic components, and the movable mold is opened. When the movable mold slides downward, the slides at the front and rear sides are close to each other through the contact guidance of the wedge-shaped surface and the inner wall of the through groove, and the movable mold is closed.

[0009] The injection molding machine is also provided with a mold opening and closing mechanism, and the mold opening and closing mechanism is used to drive the upper mold base and the movable mold to move to open and close the mold.

[0010] The bottom of the lower die seat is symmetrically provided with limit slide rails, and the lower side of the movable die is processed with limit sliding blocks corresponding to the limit slide rails.

[0011] The movable mold has a cavity inside and is provided with a plurality of positioning rods. The slide tables on both the front and rear sides are provided with sliders, and the sliders are slidably connected with the positioning rods.

[0012] Each of the elastic components includes a spring sheet, one end of which is fixedly connected to the slider and the other end of which is fixedly connected to the inner cavity of the movable mold.

[0013] The mold opening and closing mechanism includes a hydraulic press, a hydraulic pipe, a liquid inlet pipe and a liquid outlet pipe. The hydraulic press is built inside the injection molding machine. The hydraulic pipe includes a horizontal pipe, a first vertical pipe and a second vertical pipe. The first vertical pipe and the second vertical pipe are respectively connected to two ends of the horizontal pipe, and the longitudinal length of the first vertical pipe is less than the longitudinal length of the second vertical pipe.

[0014] The bottom of the movable mold is fixedly connected to a slide seat, the first vertical tube is provided with a first hydraulic rod, the second vertical tube is provided with a second hydraulic rod, the first hydraulic rod is fixedly connected to one side of the slide seat, the second hydraulic rod is fixedly connected to one side of the upper mold seat, the two ends of the liquid inlet pipe are respectively connected to the liquid outlet of the hydraulic press and the cross pipe, the liquid discharge pipe is multiple and connected to the cross pipe, and the liquid discharge pipes are collectively connected to the liquid return port of the hydraulic press.

[0015] The second hydraulic rod is also equipped with a counterweight block. Under the counterweight of the counterweight block, the overall weight of the upper die seat is not less than the overall weight of the slide seat and the movable die.

[0016] The liquid inlet pipe and each of the liquid discharge pipes are equipped with a solenoid valve.

[0017] The upper mold base and the lower mold base are both provided with cooling cavities, the injection molding machine is provided with a cooling liquid tank and a cooling pump, one side of the cooling cavity of the lower mold base is connected to the output end pipeline of the cooling pump, and the other side of the cooling cavity of the lower mold base is connected to the cooling liquid tank by a pipeline;

[0018] The cooling cavity located at the upper die seat is symmetrically provided with water inlet holes, and the cooling cavity located at the lower die seat is symmetrically provided with insert pipes matching the water inlet holes.

[0019] The present invention provides a movable mold for forming an L-shaped buckle of a cup cover with a spoon on a lower mold base, and the movable mold is composed of a slide table that can slide to open and close the mold, so that when the movable mold is closed, the cup cover with a spoon can be injection molded, and when the movable mold is opened, the removal of the cup cover with a spoon will not be hindered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the structure of a common cup lid and a cup lid with a spoon of an existing product;

[0022] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0024] Figure 4 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 5 It is a schematic diagram of the structure of the movable mold of the present invention when the mold is opened;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the movable mold of the present invention when the mold is opened;

[0027] Figure 7 It is a structural schematic diagram of the movable mold of the present invention when the mold is closed;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the movable mold of the present invention when the mold is closed;

[0029] Fig. 9 It is a structural schematic diagram of the mold opening and closing mechanism of the second embodiment of the present invention;

[0030] Fig.10 It is a schematic diagram of a partial cross-sectional structure of the third embodiment of the present invention;

[0031] The main component symbols are described as follows:

[0032] Injection molding machine 100, positioning column 101, upper mold base 110, upper mold cavity 111, injection molding tube 112, lower mold base 120, lower mold cavity 121, limiting slide rail 122, movable mold 130, slide table 131, transverse molding groove 132, vertical molding groove 133, limiting slide block 134, positioning rod 140, slide block 141, spring sheet 150;

[0033] Hydraulic machine 200, hydraulic pipe 210, transverse pipe 211, first vertical pipe 212, first hydraulic rod 2121, second vertical pipe 213, second hydraulic rod 2131, counterweight 2132, liquid inlet pipe 220, liquid outlet pipe 221, solenoid valve 222, slide seat 230;

[0034] Cooling chamber 300 , coolant tank 301 , cooling pump 302 , water inlet 303 , and insert pipe 304 . DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Embodiment 1, as Figures 2 to 8 The injection molding device for producing a cup cover with a spoon shown in the figure comprises an injection molding machine 100, an upper mold base 110 and a lower mold base 120. The injection molding machine 100 is equipped with a plurality of positioning columns 101. The four corners of the upper mold base 110 are respectively slidably connected with the positioning columns 101. An upper mold cavity 111 corresponding to the top cover of the cup cover with a spoon is opened at the bottom of the upper mold base 110. An injection molding tube 112 is installed at the top of the upper mold base 110. The four corners of the lower mold base 120 are respectively fixedly connected with the positioning columns 101. The upper side of the lower mold base 120 is equipped with a lower mold cavity 121 matching the ring cover of the cup cover with a spoon.

[0037] The lower die base 120 also includes a movable die 130. A through groove is provided in the middle of the lower die base 120. The movable die 130 is slidably connected to the through groove in the vertical direction. The movable die 130 is slidably connected to slide tables 131 on both sides. Both left and right ends of the slide tables 131 on both sides are provided with transverse forming grooves 132. Both left and right ends of the movable die 130 are provided with vertical forming grooves 133 corresponding to the transverse forming grooves 132 at both ends. The transverse forming grooves 132 and the vertical forming grooves 133 located at the same end together constitute a forming cavity matching the L-shaped buckle of the cup cover with a spoon.

[0038] The front side of the slide 131 at the front side and the rear side of the slide 131 at the rear side are both processed into wedge-shaped surfaces. The movable mold 130 is elastically connected to the slides 131 at the front and rear sides through multiple elastic components. When the movable mold 130 slides upward, the slides 131 at the front and rear sides slide out respectively under the elastic force of the elastic components, and the movable mold 130 is opened. When the movable mold 130 slides downward, the slides 131 at the front and rear sides are close to each other through the contact guidance of the wedge-shaped surfaces and the inner wall of the through groove, and the movable mold 130 is closed.

[0039] The injection molding machine 100 is also provided with a mold opening and closing mechanism, which is used to drive the upper mold base 110 and the movable mold 130 to move and open and close the mold.

[0040] When the device is used, it includes mold closing step, material injection step and mold opening step in sequence, wherein the mold closing step is as follows:

[0041] Mold closing step S100: the mold opening and closing mechanism controls the upper mold base 110 to move downward, and controls the movable mold 130 to move downward, so that the upper mold base 110 moves to fit with the lower mold base 120, and the movable mold 130 is received into the through groove of the lower mold base 120;

[0042] In this step, if Figure 7 and Figure 8 As shown, when the movable mold 130 slides downward, the slides 131 on the front and rear sides are brought closer to each other through the contact and guidance of the wedge-shaped surface and the inner wall of the through groove, so that the movable mold 130 is closed, so that the transverse molding grooves 132 and the vertical molding grooves 133 at both ends of the movable mold 130 together form a molding cavity that matches the L-shaped buckle of the cup cover with a spoon;

[0043] At the same time, the upper mold cavity 111 of the upper mold base 110 and the lower mold cavity 121 of the lower mold base 120 are matched to form the entire molding cavity of the cup cover with spoon;

[0044] The injection steps are as follows:

[0045] Injection step S100: After the mold closing step S100 is completed, the molten injection material enters the molding cavity through the injection tube 112 connected to the upper mold cavity 111;

[0046] The mold opening steps are as follows:

[0047] Mold opening step S100: After the injection step S100 is completed, after the molten injection material is cooled and formed in the molding cavity, the mold opening and closing mechanism controls the upper mold base 110 and the movable mold 130 to move upward, so that the upper mold base 110 is separated from the lower mold base 120, and the movable mold 130 extends upward out of the through slot of the lower mold base 120;

[0048] In this step, if Figure 5 and Figure 6As shown, when the movable mold 130 slides upward, the slides 131 on the front and rear sides slide out respectively under the elastic force of the elastic component, and the movable mold 130 is opened, so that the L-shaped buckle of the cup cover with spoon is no longer hindered by the molding cavity formed by the horizontal molding groove 132 and the vertical molding groove 133, and people can easily take out the molded cup cover with spoon to complete the injection molding of the cup cover with spoon.

[0049] In this embodiment, a movable mold 130 for forming an L-shaped buckle of a cup cover with a spoon is arranged on a lower mold base, and the movable mold 130 is composed of a slide table 131 that can slide to open and close the mold, so that when the movable mold 130 is closed, the cup cover with a spoon can be injection molded, and when the movable mold 130 is opened, it will not hinder the removal of the cup cover with a spoon.

[0050] In this embodiment, the sliding structure of the movable mold and the lower mold base is further described. Figure 4 As shown, the bottom of the lower mold base 120 is symmetrically provided with a limit slide rail 122 , and the lower side of the movable mold 130 is processed with a limit slider 134 corresponding to the limit slide rail 122 .

[0051] By providing the limiting slide rail 122 and the limiting slider 134 , through the cooperation of the two, stable sliding and limiting between the movable mold 130 and the lower mold base 120 can be maintained.

[0052] In this embodiment, the sliding structure and elastic components of the slide table are further described as follows: Figure 6 and Figure 8 As shown, the interior of the movable mold 130 is a cavity and is provided with a plurality of positioning rods 140, and the slide tables 131 on both the front and rear sides are provided with sliders 141, and the sliders 141 are slidably connected with the positioning rods 140;

[0053] Each elastic component includes a spring sheet 150 , one end of the spring sheet 150 is fixedly connected to the slider 141 and the other end of the spring sheet 150 is fixedly connected to the inner cavity of the movable mold 130 .

[0054] By setting the positioning rod 140 and the slider 141, the slides 131 on both sides can slide stably in the internal space of the movable mold 130. At the same time, the elastic component is a spring sheet 150 with elastic effect, which makes the elastic component easy to process and install.

[0055] Embodiment 2 is based on Embodiment 1, and further describes the mold opening and closing mechanism in this embodiment. Fig. 9As shown, the mold opening and closing mechanism includes a hydraulic press 200, a hydraulic pipe 210, a liquid inlet pipe 220 and a liquid outlet pipe 221. The hydraulic press 200 is built inside the injection molding machine 100. The hydraulic pipe 210 includes a horizontal pipe 211, a first vertical pipe 212 and a second vertical pipe 213. The first vertical pipe 212 and the second vertical pipe 213 are respectively connected to both ends of the horizontal pipe 211, and the longitudinal length of the first vertical pipe 212 is less than the longitudinal length of the second vertical pipe 213.

[0056] The bottom of the movable mold 130 is fixedly connected with a slide 230, the first vertical pipe 212 is provided with a first hydraulic rod 2121, the second vertical pipe 213 is provided with a second hydraulic rod 2131, the first hydraulic rod 2121 is fixedly connected to one side of the slide 230, the second hydraulic rod 2131 is fixedly connected to one side of the upper mold base 110, the two ends of the liquid inlet pipe 220 are respectively connected to the liquid outlet of the hydraulic press 200 and the horizontal pipe 211, there are multiple discharge pipes 221 and connected to the horizontal pipe 211, and the discharge pipes 221 are collectively connected to the liquid return port of the hydraulic press 200;

[0057] The second hydraulic rod 2131 is also equipped with a counterweight block 2132. Under the counterweight of the counterweight block 2132, the overall weight of the upper mold base 120 is not less than the overall weight of the slide 230 and the movable mold 130. The liquid inlet pipe 220 and each liquid discharge pipe 221 are equipped with an electromagnetic valve 222.

[0058] In the aforementioned mold opening step S100, the mold opening and closing mechanism specifically includes the following steps:

[0059] Mold opening step S101: close the solenoid valve 222 of each liquid discharge pipe 221 and open the solenoid valve 222 of the liquid inlet pipe 220;

[0060] Mold opening step S102: The hydraulic press 200 pumps hydraulic oil into the transverse tube 211 through the liquid inlet pipe 220. Due to the setting of the counterweight block 2132, the overall weight of the upper mold base 120 is not less than the overall weight of the slide 230 and the movable mold 130. According to the Bernoulli principle, the hydraulic oil will first push up the first hydraulic rod 2121 in the first vertical tube 212, thereby causing the slide 230 to move upward, driving the movable mold 130 to push the upper mold base 110 upward. At this time, the liquid levels in the first vertical tube 212 and the second vertical tube 213 are at the same height, so that the following effects can be achieved:

[0061] ① The movable mold 130 and the upper mold base 110 move upward at the same speed, so that when the movable mold 130 extends upward out of the through slot of the lower mold base 120, the top of the cup cover with spoon will always be in the upper mold cavity 111 of the upper mold base 110 to position the cup cover with spoon. Since the cup cover with spoon is positioned, the position of the cup cover with spoon will not change due to the movement of the slide 131 when the movable mold 130 is opened;

[0062] ② As the movable mold 130 moves to the maximum height, it will no longer move upward. At this time, the hydraulic oil entering the horizontal pipe 211 pushes the second hydraulic rod 2131 in the second vertical pipe 213 upward, so that the upper mold base 110 is separated from the cup cover with spoon. In this way, the cup cover with spoon can be removed by lifting it upward;

[0063] In the present embodiment, the counterweight 2132 makes the overall weight of the upper mold base 120 not less than the overall weight of the slide 230 and the movable mold 130, which is a key point. If the overall weight of the upper mold base 120 is less than the overall weight of the slide 230 and the movable mold 130, it can be known from the Bernoulli principle that the upper mold base 120 will first move upward, so that the liquid level of the second vertical tube 213 is higher than the liquid level of the first vertical tube 212 to balance the pressure difference, and the positioning effect of the cup lid with a spoon cannot be achieved when the mold is opened. Therefore, the counterweight 2132 is required to make the overall weight of the upper mold base 120 not less than the overall weight of the slide 230 and the movable mold 130.

[0064] In the aforementioned mold closing step S100, the mold opening and closing mechanism specifically includes the following steps:

[0065] Mold closing step S101: open the solenoid valve 222 of each discharge pipe 221 and close the solenoid valve 222 of the inlet pipe 220, and the hydraulic oil in the first vertical pipe 212, the second vertical pipe 213 and the horizontal pipe 211 is collected into the hydraulic press 200 through each discharge pipe 221, so that the movable mold 130 of the upper mold base 110 and the slide base 230 can automatically return to the mold under the action of gravity.

[0066] Embodiment 3 is a further improvement made on the basis of Embodiment 2. Fig.10 As shown, a cooling cavity 300 is also provided inside the upper mold base 110 and the lower mold base 120, and a coolant tank 301 and a cooling pump 302 are built into the injection molding machine 100. One side of the cooling cavity 300 of the lower mold base 120 is connected to the output end pipeline of the cooling pump 302, and the other side of the cooling cavity 300 of the lower mold base 120 is connected to the coolant tank 301 by a pipeline;

[0067] The cooling cavity 300 located at the upper mold base 110 is symmetrically provided with water inlet holes 303 , and the cooling cavity 300 located at the lower mold base 120 is symmetrically provided with insert pipes 304 matching the water inlet holes 303 .

[0068] After the mold is closed and the injection plastic fills the molding cavity, it can be foreseen that the insert 304 of the lower mold base 120 is inserted into the water inlet 303 of the upper mold base 110, so the cooling pump 302 can be started, and the coolant in the coolant tank 301 first enters the cooling cavity 300 of the lower mold base 120 through the connected pipeline, and then enters the cooling cavity 300 of the upper mold base 110 through the insert 304 and the water inlet 303 for circulation, and the cooling molding of the cup cover with a spoon is accelerated by the flow of the coolant, thereby improving the production efficiency;

[0069] Before the mold is opened, the cooling pump 302 stops pumping liquid, and the cooling liquid in the cooling cavity 300 flows back to the cooling liquid tank 301 under gravity reflux, and then the mold opening step can be carried out.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An injection molding device for producing a cup lid with a spoon, comprising an injection molding machine, an upper mold base and a lower mold base, characterized in that: The injection molding machine is equipped with a plurality of positioning columns, the four corners of the upper mold base are respectively slidably connected with the positioning columns, the bottom of the upper mold base is provided with an upper mold cavity corresponding to the top cover of the cup cover with a spoon, the top of the upper mold base is provided with an injection molding tube, the four corners of the lower mold base are respectively fixedly connected with the positioning columns, and the upper side of the lower mold base is provided with a lower mold cavity matching the ring cover of the cup cover with a spoon; The lower die base also includes a movable die, a through slot is provided in the middle of the lower die base, the movable die is slidably connected to the through slot in the vertical direction, the movable die is slidably connected to slides on both the front and rear sides, the slides on both sides are both provided with transverse forming grooves at both ends, the movable die is also provided with vertical forming grooves corresponding to the transverse forming grooves at both ends at both ends, and the transverse forming groove and the vertical forming groove at the same end together constitute a forming cavity matching the L-shaped buckle of the cup cover with spoon; The front side of the slide at the front side and the rear side of the slide at the rear side are both processed into wedge-shaped surfaces. The movable mold is elastically connected to the slides at the front and rear sides through multiple elastic components. When the movable mold slides upward, the slides at the front and rear sides slide out respectively under the elastic force of the elastic components, and the movable mold is opened. When the movable mold slides downward, the slides at the front and rear sides are close to each other through the contact guidance of the wedge-shaped surface and the inner wall of the through groove, and the movable mold is closed. The injection molding machine is also provided with a mold opening and closing mechanism, and the mold opening and closing mechanism is used to drive the upper mold base and the movable mold to move to open and close the mold.

2. The injection molding device for producing a cup lid with a spoon according to claim 1, characterized in that: The bottom of the lower die seat is symmetrically provided with limit slide rails, and the lower side of the movable die is processed with limit sliding blocks corresponding to the limit slide rails.

3. The injection molding device for producing a cup lid with a spoon according to claim 2, characterized in that: The movable mold has a cavity inside and is provided with a plurality of positioning rods. The slide tables on both the front and rear sides are provided with sliders, and the sliders are slidably connected with the positioning rods.

4. The injection molding device for producing a cup lid with a spoon according to claim 3, characterized in that: Each of the elastic components includes a spring sheet, one end of which is fixedly connected to the slider and the other end of which is fixedly connected to the inner cavity of the movable mold.

5. The injection molding device for producing a cup lid with a spoon according to claim 4, characterized in that: The mold opening and closing mechanism includes a hydraulic press, a hydraulic pipe, a liquid inlet pipe and a liquid outlet pipe. The hydraulic press is built inside the injection molding machine. The hydraulic pipe includes a horizontal pipe, a first vertical pipe and a second vertical pipe. The first vertical pipe and the second vertical pipe are respectively connected to two ends of the horizontal pipe, and the longitudinal length of the first vertical pipe is less than the longitudinal length of the second vertical pipe. The bottom of the movable mold is fixedly connected to a slide seat, the first vertical tube is provided with a first hydraulic rod, the second vertical tube is provided with a second hydraulic rod, the first hydraulic rod is fixedly connected to one side of the slide seat, the second hydraulic rod is fixedly connected to one side of the upper mold seat, the two ends of the liquid inlet pipe are respectively connected to the liquid outlet of the hydraulic press and the cross pipe, the liquid discharge pipe is multiple and connected to the cross pipe, and the liquid discharge pipes are collectively connected to the liquid return port of the hydraulic press.

6. The injection molding device for producing a cup lid with a spoon according to claim 5, characterized in that: The second hydraulic rod is also equipped with a counterweight block. Under the counterweight of the counterweight block, the overall weight of the upper die seat is not less than the overall weight of the slide seat and the movable die.

7. The injection molding device for producing a cup lid with a spoon according to claim 6, characterized in that: The liquid inlet pipe and each of the liquid discharge pipes are equipped with a solenoid valve.

8. The injection molding device for producing a cup lid with a spoon according to claim 7, characterized in that: The upper mold base and the lower mold base are both provided with cooling cavities, the injection molding machine is provided with a cooling liquid tank and a cooling pump, one side of the cooling cavity of the lower mold base is connected to the output end pipeline of the cooling pump, and the other side of the cooling cavity of the lower mold base is connected to the cooling liquid tank by a pipeline; The cooling cavity located at the upper die seat is symmetrically provided with water inlet holes, and the cooling cavity located at the lower die seat is symmetrically provided with insert pipes matching the water inlet holes.

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