Production equipment of EPS (Expandable Polystyrene) foam box
By designing EPS foam box production equipment with intelligent feed structure and automatic exhaust components, the problems of poor feed port control and lack of automatic exhaust in the prior art are solved, efficient and accurate raw material injection and gas discharge are achieved, and the molding quality and physical performance of the product are improved.
Patent Information
- Application Number
- CN202510602597.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-06-27
AI Technical Summary
In the injection molding production process of the existing EPS foam box, there are defects in the feed port structure design, which is difficult to achieve efficient and accurate automatic opening and closing control, resulting in uneven distribution of raw materials and defects such as depressions, protrusions, and corrugations on the surface of the product; at the same time, the mold lacks an effective automatic exhaust mechanism, which leads to gas retention and bubbles or air pockets, which damages the structural density and physical properties of the product.
A production equipment for EPS foam box is designed, including feed structure and automatic exhaust components. Through the combination of spring parts, sliding rods, closure blocks and feed barrels, intelligent opening and closing of the feed port is realized; through the combination of guide vertical rods, exhaust sealing blocks and adjustment screws, automatic exhaust gas is realized to ensure smooth injection of raw materials and timely discharge of excess air.
It realizes efficient and accurate automatic opening and closing of the feed port, avoiding raw material flow disorders and surface defects; through the automatic exhaust mechanism, gas retention is eliminated, ensuring the overall molding quality and physical performance of the foam box.
Smart Images
Figure CN120206718A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of injection molding of foam boxes, and particularly to a production device for EPS foam boxes. Background Art
[0002] Expandable polystyrene (EPS) foam boxes exhibit irreplaceable application value in multiple key industrial fields due to their excellent light weight characteristics, high thermal insulation performance, outstanding shockproof ability, and highly competitive manufacturing costs; in terms of manufacturing process, EPS foam boxes are produced using advanced injection molding technology; this technology ensures that the products have high dimensional accuracy, uniform density distribution, and stable physical properties, and can precisely meet the diverse packaging and protection requirements of different industries.
[0003] In the existing injection molding production process of foam boxes, there are significant defects in the design of the feeding port structure, making it difficult to achieve efficient and precise automatic opening and closing control; since the feeding port cannot be automatically closed at the appropriate time, when the raw material is injected into the mold cavity, its flow state is easily disturbed by the outside world and becomes disordered, resulting in uneven raw material distribution in local areas; and it is easy to form defects such as depressions, protrusions, and ripples on the surface of the foam box at the feeding port, seriously damaging the appearance quality and structural integrity of the product; and currently, the molds used in injection molding lack an effective automatic exhaust mechanism and cannot timely and smoothly discharge the excess air; these trapped gases form bubbles or cavities during the molding process, which not only damage the compactness of the internal structure of the foam box, leading to a decline in its physical properties such as compressive strength and thermal insulation performance, but also leave defects such as pores and pockmarks on the product surface, further reducing the overall molding quality of the foam box and increasing the defective rate of the product. Summary of the Invention
[0004] In view of this, the present invention provides a production device for EPS foam boxes, which has a feeding structure and an automatic exhaust component; can automatically open and close the feeding port; prevent the appearance of defects such as depressions, protrusions, and ripples at the feeding port; and can timely and smoothly discharge the excess air in the molding chamber, ensuring the overall molding quality of the foam box.
[0005] The present invention provides a production device for EPS foam boxes, specifically including: a base; a injection molding female mold is fixedly arranged on the top of the base, and an injection molding male mold is movably arranged inside the injection molding female mold, and a molding chamber is arranged between the injection molding female mold and the injection molding male mold; a guiding component is fixedly arranged between the injection molding female mold and the injection molding male mold, and a knockout structure is slidably arranged inside the injection molding female mold; an automatic exhaust component is fixedly arranged inside the top side of the injection molding female mold, and a feeding structure is fixedly arranged inside the injection molding female mold, and an injection mechanism is fixedly arranged on the top of the base; The feeding structure includes: a feeding cylinder, a sliding rod, and a closing block; the feeding cylinder is fixedly arranged inside one side of the injection molding female die, and the feeding cylinder communicates with the molding cavity; the sliding rod is slidably arranged inside the feeding cylinder; the closing block is fixedly arranged at one end of the sliding rod, and the surface of the closing block is flush with the inner surface of the injection molding female die; the automatic exhaust assembly includes: an exhaust cylinder, a sealing groove B, a guiding vertical rod, and a threaded frame; the exhaust cylinder is fixedly arranged inside the top side of the injection molding female die, and the exhaust cylinder communicates with the molding cavity; the sealing groove B is opened inside the top side of the exhaust cylinder; the guiding vertical rod is fixedly arranged at the top of the exhaust cylinder; the threaded frame is fixedly arranged at the top end of the guiding vertical rod.
[0006] In at least some embodiments, a cylinder A is fixedly arranged at the bottom of the base, and a driving seat is fixedly arranged on the outer side of the telescopic end of the cylinder A, and the driving seat is fixedly connected to the injection molding male die; a sealing groove A is opened inside the injection molding female die, and a sealing ring A is fixedly arranged on the outer side of the injection molding male die, and the sealing ring A is movably arranged inside the sealing groove A.
[0007] In at least some embodiments, a cooling cavity is arranged inside the injection molding male die, and a liquid inlet pipe is fixedly arranged inside the top side of the injection molding male die; a liquid outlet pipe is fixedly arranged inside the bottom side of the injection molding male die, and both the liquid outlet pipe and the liquid inlet pipe communicate with the cooling cavity.
[0008] In at least some embodiments, the guiding assembly includes: a fixed seat, a ball, a guiding cross bar, and a guiding seat; the fixed seat is fixedly arranged outside the injection molding female die; the ball is rotatably arranged inside the fixed seat, and the balls are arranged in an annular array; the guiding cross bar is movably arranged inside the fixed seat, and the outer side of the guiding cross bar is in contact with the outer side of the ball; the guiding seat is fixedly arranged at the top end of the guiding cross bar, and the guiding seat is fixedly arranged outside the injection molding male die.
[0009] In at least some embodiments, the ejecting structure includes: an ejecting rod, an ejecting plate, and a positioning plate; the ejecting rod is slidably arranged inside the injection molding female die; the ejecting plate is fixedly arranged at one end of the ejecting rod, and the ejecting plate is located inside the injection molding female die, and the surface of the ejecting plate is flush with the inner surface of the injection molding female die; the positioning plate is fixedly arranged at the other end of the ejecting rod, and a spring member is arranged between the positioning plate and the outside of the injection molding female die, and the spring member is located outside the ejecting rod.
[0010] In at least some embodiments, the guiding assembly further includes: a linkage plate; the linkage plate is fixedly arranged on the outer side of the guiding cross bar, and the end of the linkage plate and the positioning plate are on the same axis.
[0011] In at least some embodiments, the automatic exhaust assembly further includes: an adjusting screw, an adjusting bracket, an exhaust plugging block, and a sealing ring B; the adjusting screw is arranged inside the threaded bracket through threaded connection, and a knob is fixedly arranged at the top end of the adjusting screw; the adjusting bracket is rotatably arranged at the bottom end of the adjusting screw, and the adjusting bracket is slidably arranged outside the guiding vertical rod; the exhaust plugging block is slidably arranged outside the guiding vertical rod, and the bottom of the exhaust plugging block is slidably arranged inside the exhaust cylinder; a spring member is arranged between the top of the exhaust plugging block and the bottom of the adjusting bracket, and the spring member is located outside the guiding vertical rod; the sealing ring B is fixedly arranged inside the bottom side of the exhaust plugging block, and the sealing ring B is movably arranged inside the sealing groove B.
[0012] In at least some embodiments, the feeding structure further includes: a baffle; the baffle is fixedly arranged at the other end of the sliding rod, and the baffle and the sliding rod are arranged in an annular array, and the baffle is slidably arranged inside the feeding cylinder; a spring member is arranged between the baffle and the inside of the feeding cylinder, and the spring member is located outside the sliding rod.
[0013] In at least some embodiments, the injection mechanism includes: a support column, an injection cylinder, a feed pipe, a one-way valve, a storage barrel, a top cover, and a fixed pipe; the support column is fixedly arranged at the top of the base; the injection cylinder is fixedly arranged at the top of the support column; the feed pipe is fixedly arranged inside the top side of the injection cylinder; the one-way valve is fixedly arranged at the top end of the feed pipe; the storage barrel is fixedly arranged on the top of the one-way valve; the top cover is fixedly installed on the top of the storage barrel; the fixed pipe is fixedly arranged inside the top side of the top cover.
[0014] In at least some embodiments, the injection mechanism further includes: a reducing cylinder, a piston rod, a connecting plate, a cylinder B, a piston column, and a pushing block; the reducing cylinder is fixedly arranged at the end of the injection cylinder, and the reducing cylinder is also fixedly arranged outside the feeding cylinder; the piston rod is slidably arranged inside the injection cylinder; the connecting plate is fixedly arranged at one end of the piston rod; the cylinder B is fixedly arranged at the bottom of the reducing cylinder, and the telescopic end of the cylinder B is fixedly connected to the connecting plate; the piston column is fixedly arranged at the other end of the piston rod, and the piston column is slidably arranged inside the injection cylinder; the pushing block is fixedly arranged at the top end of the piston column.
[0015] Beneficial effects 1. In the present invention, by providing a spring member, a sliding rod, a closing block and a feeding cylinder, the intelligent opening and closing of the port of the feeding cylinder during the injection molding process is achieved. When the injection mechanism performs the raw material injection operation, the injection pressure of the raw material acts on the closing block, causing the closing block to move along the guiding track of the sliding rod, automatically opening the feeding channel. At this time, the raw material of the foam box can smoothly pass through the opening formed by the closing block and accurately spray into the molding cavity, ensuring the efficiency and stability of the raw material filling process. When the injection process of the foam box raw material is completed, the injection pressure is released, and the spring member quickly exerts its elastic potential energy, pushing the closing block to move reversely along the sliding rod and accurately resetting to the initial position to tightly seal the port of the feeding cylinder. This effectively avoids the problem of raw material flow disorder caused by improper opening and closing timing or unstable opening and closing state of the feeding port, and fundamentally eliminates molding defects such as surface depressions, protrusions, and ripples that may occur at the feeding port, providing a reliable guarantee for the high-quality production of foam boxes.
[0016] 2. In the present invention, by providing a spring member, a guiding vertical rod and an exhaust plugging block, during the raw material filling operation in the molding cavity, as the raw material continues to be injected, the gas in the cavity is compressed and the air pressure gradually increases. When the air pressure reaches a specific threshold value, the pressure generated will accurately act on the exhaust plugging block, overcoming the elastic resistance of the spring member and pushing the exhaust plugging block to slide smoothly along the guiding vertical rod to achieve automatic opening, forming a communication channel between the molding cavity and the outside. At this time, the excess air in the molding cavity can be quickly and orderly discharged, effectively avoiding molding defects caused by gas retention, such as bubbles and air cavities, and fundamentally ensuring the overall molding quality of the foam box, ensuring that its internal structure is dense and uniform and its physical properties are stable and reliable.
[0017] 3. In the present invention, by rotating the adjusting screw rod to cause its axial displacement within the threaded frame, the initial distance between the exhaust plugging block and the adjusting frame can be accurately adjusted. This change in distance directly affects the initial compression degree of the spring member, and further adjusts the pre-tightening force of the spring member on the exhaust plugging block. Based on this, according to the molding process requirements, raw material characteristics and target product quality standards of different foam boxes, the air pressure value required to push open the exhaust plugging block can be flexibly set to achieve precise control of the exhaust process, fully meeting diverse production needs and improving the controllability of the production process and the consistency of product quality.
[0018] 4. In the present invention, by providing a linkage plate, when the injection molding punch slides out of the injection molding die, the linkage plate can push the ejector rod and the ejector plate through the positioning plate, so that the ejector plate ejects the formed foam box from the injection molding die; it is beneficial to take out the formed foam box; and when the injection molding punch slides into the injection molding die, the ejector plate and the ejector rod can be automatically reset through the spring member and the positioning plate; effectively avoiding the problems of surface damage or deformation of the foam box that may be caused by manual part taking, greatly improving the product yield and production efficiency, and ensuring the convenience and accuracy of the part taking operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.
[0020] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.
[0021] In the drawings: Figure 1 is a schematic diagram of the overall structure of the present invention.
[0022] Figure 2 is a schematic diagram of the internal structure of the injection molding die of the present invention.
[0023] Figure 3 is a cross-sectional structure schematic diagram of the injection molding die and the injection molding punch of the present invention.
[0024] Figure 4 is a schematic diagram of the lower surface structure of the base of the present invention.
[0025] Figure 5 is a schematic diagram of the lower surface structure of the injection molding punch of the present invention.
[0026] Figure 6 is a schematic diagram of the upper surface structure of the exhaust pipe of the present invention.
[0027] Figure 7 is a schematic diagram of the lower surface structure of the exhaust plugging block of the present invention.
[0028] Figure 8 is a schematic diagram of the structure of the injection mechanism of the present invention.
[0029] Figure 9 is a schematic diagram of the internal structure of the injection cylinder of the present invention.
[0030] Figure 10 is a schematic diagram of the internal structure of the feed cylinder of the present invention.
[0031] LIST OF REFERENCE NUMERALS 1. Base; 101. Injection molding female die; 102. Cylinder A; 103. Driving seat; 104. Sealing groove A; 105. Injection molding male die; 106. Molding cavity; 107. Cooling cavity; 108. Liquid inlet pipe; 109. Liquid outlet pipe; 1010. Sealing ring A; 2. Guide assembly; 201. Fixed seat; 202. Ball; 203. Guide cross bar; 204. Guide seat; 205. Linking plate; 3. Ejector structure; 301. Ejector rod; 302. Ejector plate; 303. Positioning plate; 4. Automatic exhaust assembly; 401. Exhaust cylinder; 402. Sealing groove B; 403. Guide vertical rod; 404. Threaded frame; 405. Adjusting screw; 406. Adjusting frame; 407. Exhaust plugging block; 408. Sealing ring B; 5. Feeding structure; 501. Feeding cylinder; 502. Sliding rod; 503. Baffle; 504. Sealing block; 6. Injection mechanism; 601. Support column; 602. Injection cylinder; 603. Feeding pipe; 604. Check valve; 605. Storage barrel; 606. Top cover; 607. Fixed pipe; 608. Reducing cylinder; 609. Piston rod; 6010. Connecting plate; 6011. Cylinder B; 6012. Piston column; 6013. Pushing block. Specific embodiments
[0032] In order to make the objectives, solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.
[0033] Embodiment 1: Please refer to Figures 1 to 10 as shown: The present invention provides a production device for an EPS foam box, including a base 1; an injection molding female die 101 is fixedly arranged on the top of the base 1, and an injection molding male die 105 is movably arranged inside the injection molding female die 101, and a molding cavity 106 is arranged between the injection molding female die 101 and the injection molding male die 105; a guide assembly 2 is fixedly arranged between the injection molding female die 101 and the injection molding male die 105, and an ejector structure 3 is slidably arranged inside the injection molding female die 101; an automatic exhaust assembly 4 is fixedly arranged inside the top side of the injection molding female die 101, and a feeding structure 5 is fixedly arranged inside the injection molding female die 101, and an injection mechanism 6 is fixedly arranged on the top of the base 1; In the embodiments of the present disclosure, the feeding structure 5 includes: a feeding cylinder 501, a sliding rod 502 and a closing block 504; the feeding cylinder 501 is fixedly arranged inside one side of the injection molding female die 101, and the feeding cylinder 501 communicates with the molding cavity 106; the sliding rod 502 is slidably arranged inside the feeding cylinder 501; the closing block 504 is fixedly arranged at one end of the sliding rod 502, and the surface of the closing block 504 is flush with the inner surface of the injection molding female die 101; the feeding structure 5 further includes: a baffle 503; the baffle 503 is fixedly arranged at the other end of the sliding rod 502, and the baffle 503 and the sliding rod 502 are arranged in an annular array, and the baffle 503 is slidably arranged inside the feeding cylinder 501; a spring member is arranged between the baffle 503 and the inside of the feeding cylinder 501, and the spring member is located outside the sliding rod 502; the injection mechanism 6 includes: a support column 601, an injection cylinder 602, a feeding pipe 603, a one-way valve 604, a storage barrel 605, a top cover 606, a fixed pipe 607, a variable-diameter cylinder 608, a piston rod 609, a connecting plate 6010, a cylinder B 6011, a piston column 6012 and a pushing block 6013; the support column 601 is fixedly arranged on the top of the base 1; the injection cylinder 602 is fixedly arranged on the top of the support column 601; the feeding pipe 603 is fixedly arranged inside the top side of the injection cylinder 602; the one-way valve 604 is fixedly arranged at the top end of the feeding pipe 603; the storage barrel 605 is fixedly arranged on the top of the one-way valve 604; the top cover 606 is fixedly installed on the top of the storage barrel 605; the fixed pipe 607 is fixedly arranged inside the top side of the top cover 606; the variable-diameter cylinder 608 is fixedly arranged at the end of the injection cylinder 602, and the variable-diameter cylinder 608 is also fixedly arranged outside the feeding cylinder 501; the piston rod 609 is slidably arranged inside the injection cylinder 602; the connecting plate 6010 is fixedly arranged at one end of the piston rod 609; the cylinder B 6011 is fixedly arranged at the bottom of the variable-diameter cylinder 608, and the telescopic end of the cylinder B 6011 is fixedly connected with the connecting plate 6010; the piston column 6012 is fixedly arranged at the other end of the piston rod 609, and the piston column 6012 is slidably arranged inside the injection cylinder 602; the pushing block 6013 is fixedly arranged at the top end of the piston column 6012; a cylinder A 102 is fixedly arranged at the bottom of the base 1, and a driving seat 103 is fixedly arranged outside the telescopic end of the cylinder A 102, and the driving seat 103 is fixedly connected with the injection molding male die 105; a sealing groove A 104 is formed inside the injection molding female die 101, and a sealing ring A 1010 is fixedly arranged outside the injection molding male die 105, and the sealing ring A 1010 is movably arranged inside the sealing groove A 104; a cooling cavity 107 is arranged inside the injection molding male die 105, and a liquid inlet pipe 108 is fixedly arranged inside the top side of the injection molding male die 105; a liquid outlet pipe 109 is fixedly arranged inside the bottom side of the injection molding male die 105, and both the liquid outlet pipe 109 and the liquid inlet pipe 108 communicate with the cooling cavity 107; its specific function is: by arranging the spring member, the sliding rod 502, the closing block 504 and the feeding cylinder 501, the intelligent opening and closing of the port of the feeding cylinder 501 during the injection molding process is realized;When the injection mechanism 6 performs the raw material injection operation, the injection pressure of the raw material acts on the closing block 504, causing the closing block 504 to move along the guiding track of the sliding rod 502, automatically opening the feeding channel; when the foam box raw material injection process is completed, the injection pressure is relieved accordingly, and the spring piece quickly exerts its elastic potential energy to push the closing block 504 to move reversely along the sliding rod 502, accurately resetting to the initial position and tightly closing the port of the feeding cylinder 501.
[0034] Embodiment 2: Please refer to Figures 2 to 5 as shown in the figure: On the basis of Embodiment 1, the guiding component 2 includes: a fixed seat 201, a ball 202, a guiding cross bar 203 and a guiding seat 204; the fixed seat 201 is fixedly arranged outside the injection molding female die 101; the ball 202 is rotatably arranged inside the fixed seat 201, and the balls 202 are arranged in a circular array; the guiding cross bar 203 is movably arranged inside the fixed seat 201, and the outer side of the guiding cross bar 203 is in contact with the outer side of the ball 202; the guiding seat 204 is fixedly arranged at the top of the guiding cross bar 203, and the guiding seat 204 is fixedly arranged outside the injection molding male die 105; the ejecting structure 3 includes: an ejecting rod 301, an ejecting plate 302 and a positioning plate 303; the ejecting rod 301 is slidably arranged inside the injection molding female die 101; the ejecting plate 302 is fixedly arranged at one end of the ejecting rod 301, and the ejecting plate 302 is located inside the injection molding female die 101, and the surface of the ejecting plate 302 is flush with the inner surface of the injection molding female die 101; the positioning plate 303 is fixedly arranged at the other end of the ejecting rod 301, and a spring piece is arranged between the positioning plate 303 and the outside of the injection molding female die 101, and the spring piece is located outside the ejecting rod 301; the guiding component 2 further includes: a linkage plate 205; the linkage plate 205 is fixedly arranged outside the guiding cross bar 203, and the end of the linkage plate 205 and the positioning plate 303 are on the same axis; its specific function is: by arranging the linkage plate 205, when the injection molding male die 105 slides out of the injection molding female die 101, the linkage plate 205 can push the ejecting rod 301 and the ejecting plate 302 through the positioning plate 303, so that the ejecting plate 302 ejects the formed foam box from the injection molding female die 101; it is beneficial to take out the formed foam box.
[0035] Embodiment 3: Please refer to Figure 3 、 Figure 6 and Figure 7As shown: Based on the first and second embodiments, the automatic exhaust assembly 4 includes: an exhaust cylinder 401, a sealing groove B402, a guiding vertical rod 403, a threaded frame 404, an adjusting screw 405, an adjusting frame 406, an exhaust plugging block 407, and a sealing ring B408; the exhaust cylinder 401 is fixedly arranged inside the top side of the injection molding female die 101, and the exhaust cylinder 401 communicates with the molding cavity 106; the sealing groove B402 is opened inside the top side of the exhaust cylinder 401; the guiding vertical rod 403 is fixedly arranged at the top of the exhaust cylinder 401; the threaded frame 404 is fixedly arranged at the top end of the guiding vertical rod 403; the adjusting screw 405 is arranged inside the threaded frame 404 through a threaded connection, and a knob is fixedly arranged at the top end of the adjusting screw 405; the adjusting frame 406 is rotatably arranged at the bottom end of the adjusting screw 405, and the adjusting frame 406 is slidably arranged outside the guiding vertical rod 403; the exhaust plugging block 407 is slidably arranged outside the guiding vertical rod 403, and the bottom of the exhaust plugging block 407 is slidably arranged inside the exhaust cylinder 401, and the bottom of the exhaust plugging block 407 is flush with the bottom of the exhaust cylinder 401; a spring member is arranged between the top of the exhaust plugging block 407 and the bottom of the adjusting frame 406, and the spring member is located outside the guiding vertical rod 403; the sealing ring B408 is fixedly arranged inside the bottom side of the exhaust plugging block 407, and the sealing ring B408 is movably arranged inside the sealing groove B402; its specific function is: by rotating the adjusting screw 405 to cause its axial displacement inside the threaded frame 404, the initial distance between the exhaust plugging block 407 and the adjusting frame 406 can be accurately adjusted; the change of this distance directly affects the initial compression degree of the spring member, and further adjusts the pre-tightening force of the spring member on the exhaust plugging block 407.
[0036] Specific usage method and function of this embodiment: In the present invention, when in use, the molten EPS foam box liquid raw material is introduced into the storage barrel 605 through the fixed pipe 607; then the air cylinder B6011 is started, and the air cylinder B6011 drives the piston rod 609 and the piston column 6012 to move outward through the connecting plate 6010. The piston column 6012 sucks the foam box raw material in the storage barrel 605 into the injection cylinder 602 through the feed pipe 603 and the one-way valve 604; then the telescopic end of the air cylinder B6011 moves in the reverse direction, causing the piston column 6012 to move in the reverse direction, so that the raw material in the injection cylinder 602 is injected into the molding cavity 106 through the feed cylinder 501, the pushing block 6013 and the variable-diameter cylinder 608; during the raw material injection process, the injection pressure of the raw material acts on the closing block 504, causing the closing block 504 to move along the guiding track of the sliding rod 502, so that the feed channel is opened; the raw material is sprayed into the molding cavity 106 through the conical closing block 504. When the raw material injection process is completed, the injection pressure is relieved accordingly. The spring member quickly exerts its own elastic potential energy, pushing the closing block 504 to move in the reverse direction along the sliding rod 502, accurately resetting to the initial position, and tightly closing the port of the feed cylinder 501; at the same time, when the raw material is injected into the molding cavity 106, as the raw material continues to be injected, the gas in the cavity is compressed, and the air pressure gradually increases; when the air pressure reaches a specific threshold, the pressure generated by it will accurately act on the exhaust plugging block 407, overcoming the elastic resistance of the spring member, and pushing the exhaust plugging block 407 to slide smoothly along the guiding vertical rod 403, realizing automatic opening, so that the molding cavity 106 forms a communication channel with the outside; at this time, the excess air in the molding cavity 106 can be quickly and orderly discharged; then the cooling water is circulated in the cooling cavity 107 through the liquid inlet pipe 108 and the liquid outlet pipe 109, so that the raw material in the molding cavity 106 is quickly cooled and formed; the air cylinder A102 is started, and the air cylinder A102 drives the injection molding punch 105 to move horizontally through the driving seat 103, the guiding cross bar 203 and the guiding seat 204, so that the injection molding punch 105 slides out of the injection molding die 101; at the same time, during the sliding process of the guiding cross bar 203, the guiding cross bar 203 pushes the positioning plate 303, the ejector rod 301 and the ejector plate 302 through the linkage plate 205, so that the formed foam box is ejected out of the injection molding die 101; the adjusting screw 405 is rotated to make it axially displace in the threaded frame 404, and the initial distance between the exhaust plugging block 407 and the adjusting frame 406 can be accurately adjusted; the change of this distance directly affects the initial compression degree of the spring member, and further adjusts the pre-tightening force of the spring member on the exhaust plugging block 407.
Claims
1. A production equipment for EPS foam box, characterized in that: include: A base (1); an injection molding die (101) is fixedly arranged on the top of the base (1), and an injection molding punch (105) is movably arranged inside the injection molding die (101), and a molding cavity (106) is arranged between the injection molding die (101) and the injection molding punch (105); a guide component (2) is fixedly arranged between the injection molding die (101) and the injection molding punch (105), and a material ejection structure (3) is slidably arranged inside the injection molding die (101); an automatic exhaust component (4) is fixedly arranged inside the top side of the injection molding die (101), and a material feeding structure (5) is fixedly arranged inside the injection molding die (101), and an injection mechanism (6) is fixedly arranged on the top of the base (1); The feeding structure (5) comprises: a feeding cylinder (501), a sliding rod (502) and a closing block (504); the feeding cylinder (501) is fixedly arranged inside one side of the injection molding die (101), and the feeding cylinder (501) is communicated with the molding cavity (106); the sliding rod (502) is slidably arranged inside the feeding cylinder (501); the closing block (504) is fixedly arranged at one end of the sliding rod (502), and the surface of the closing block (504) is flush with the inner surface of the injection molding die (101); the automatic discharge The gas assembly (4) comprises: an exhaust pipe (401), a sealing groove B (402), a guide vertical rod (403) and a threaded frame (404); the exhaust pipe (401) is fixedly arranged inside the top side of the injection molding die (101), and the exhaust pipe (401) is communicated with the molding cavity (106); the sealing groove B (402) is opened inside the top side of the exhaust pipe (401); the guide vertical rod (403) is fixedly arranged at the top of the exhaust pipe (401); and the threaded frame (404) is fixedly arranged at the top of the guide vertical rod (403).
2. The EPS foam box production equipment according to claim 1, characterized in that: The bottom of the base (1) is fixedly provided with a cylinder A (102), and a drive seat (103) is fixedly provided on the outer side of the telescopic end of the cylinder A (102), and the drive seat (103) is fixedly connected to the injection molding convex mold (105); a sealing groove A (104) is provided inside the injection molding concave mold (101), and a sealing ring A (1010) is fixedly provided on the outer side of the injection molding convex mold (105), and the sealing ring A (1010) is movably arranged inside the sealing groove A (104).
3. The EPS foam box production equipment according to claim 1, characterized in that: The injection molding convex mold (105) is provided with a cooling cavity (107) inside, and a liquid inlet pipe (108) is fixedly provided inside the top side of the injection molding convex mold (105); a liquid outlet pipe (109) is fixedly provided inside the bottom side of the injection molding convex mold (105), and both the liquid outlet pipe (109) and the liquid inlet pipe (108) are in communication with the cooling cavity (107).
4. The EPS foam box production equipment according to claim 1, characterized in that: The guide assembly (2) comprises: a fixed seat (201), a ball (202), a guide cross bar (203) and a guide seat (204); the fixed seat (201) is fixedly arranged on the outside of the injection molding die (101); the ball (202) is rotatably arranged inside the fixed seat (201), and the ball (202) is arranged in a ring array; the guide cross bar (203) is movably arranged inside the fixed seat (201), and the outside of the guide cross bar (203) is in contact with the outside of the ball (202); the guide seat (204) is fixedly arranged on the top of the guide cross bar (203), and the guide seat (204) is fixedly arranged on the outside of the injection molding punch (105).
5. The EPS foam box production equipment according to claim 4, characterized in that: The ejection structure (3) comprises: an ejection rod (301), an ejection plate (302) and a positioning plate (303); the ejection rod (301) is slidably arranged inside the injection molding die (101); the ejection plate (302) is fixedly arranged at one end of the ejection rod (301), and the ejection plate (302) is located inside the injection molding die (101), and the surface of the ejection plate (302) is flush with the inner surface of the injection molding die (101); the positioning plate (303) is fixedly arranged at the other end of the ejection rod (301), and a spring member is arranged between the positioning plate (303) and the outer side of the injection molding die (101), and the spring member is located outside the ejection rod (301).
6. The EPS foam box production equipment according to claim 5, characterized in that: The guide assembly (2) further comprises: a linkage plate (205); the linkage plate (205) is fixedly arranged on the outside of the guide crossbar (203), and the end of the linkage plate (205) and the positioning plate (303) are located on the same axis.
7. The EPS foam box production equipment according to claim 1, characterized in that: The automatic exhaust assembly (4) further comprises: an adjusting screw (405), an adjusting frame (406), an exhaust sealing block (407) and a sealing ring B (408); the adjusting screw (405) is arranged inside the threaded frame (404) through a threaded connection, and a knob is fixedly arranged at the top of the adjusting screw (405); the adjusting frame (406) is rotatably arranged at the bottom of the adjusting screw (405), and the adjusting frame (406) is slidably arranged outside the guide vertical rod (403); the exhaust sealing block (407) is provided at the bottom of the adjusting screw (405), and the exhaust sealing block (407) is provided at the bottom of the adjusting screw (405). The blocking block (407) is slidably arranged on the outside of the guide vertical rod (403), and the bottom of the exhaust sealing block (407) is slidably arranged on the inside of the exhaust pipe (401); a spring member is arranged between the top of the exhaust sealing block (407) and the bottom of the adjustment frame (406), and the spring member is located on the outside of the guide vertical rod (403); the sealing ring B (408) is fixedly arranged inside the bottom side of the exhaust sealing block (407), and the sealing ring B (408) is movably arranged inside the sealing groove B (402).
8. The EPS foam box production equipment according to claim 1, characterized in that: The feeding structure (5) further comprises: a baffle (503); the baffle (503) is fixedly arranged at the other end of the sliding rod (502), and the baffle (503) and the sliding rod (502) are arranged in a ring array, and the baffle (503) is slidably arranged inside the feeding barrel (501); a spring member is arranged between the baffle (503) and the inside of the feeding barrel (501), and the spring member is located outside the sliding rod (502).
9. The EPS foam box production equipment according to claim 1, characterized in that: The injection mechanism (6) comprises: a support column (601), an injection cylinder (602), a feed pipe (603), a one-way valve (604), a material storage barrel (605), a top cover (606) and a fixed tube (607); the support column (601) is fixedly arranged on the top of the base (1); the injection cylinder (602) is fixedly arranged on the top of the support column (601); the feed pipe (603) is fixedly arranged inside the top side of the injection cylinder (602); the one-way valve (604) is fixedly arranged on the top of the feed pipe (603); the material storage barrel (605) is fixedly arranged on the top of the one-way valve (604); the top cover (606) is fixedly installed on the top of the material storage barrel (605); and the fixed tube (607) is fixedly arranged inside the top side of the top cover (606).
10. The EPS foam box production equipment according to claim 9, characterized in that: The injection mechanism (6) further comprises: a reducing cylinder (608), a piston rod (609), a connecting plate (6010), a cylinder B (6011), a piston column (6012) and a pushing block (6013); the reducing cylinder (608) is fixedly arranged at the end of the injection cylinder (602), and the reducing cylinder (608) is also fixedly arranged at the outside of the feeding cylinder (501); the piston rod (609) is slidably arranged inside the injection cylinder (602); the connecting plate (6010) is provided to the injection cylinder (602); 010) is fixedly arranged at one end of the piston rod (609); the cylinder B (6011) is fixedly arranged at the bottom of the reducer (608), and the telescopic end of the cylinder B (6011) is fixedly connected to the connecting plate (6010); the piston column (6012) is fixedly arranged at the other end of the piston rod (609), and the piston column (6012) is slidably arranged inside the injection cylinder (602); the push block (6013) is fixedly arranged at the top of the piston column (6012).