A novel shelf and manufacturing method thereof

Abstract

The present invention discloses a novel shelf and a manufacturing method thereof, wherein the shelf comprises an outer frame and an inner screen plate, wherein the outer frame is arranged at the edges of the inner screen plate, and the inner screen plate comprises a first partition bar and a second partition bar, wherein the second partition bar is cross-molded and formed as a whole between two adjacent first partition bars. The method comprises: a. cleaning the mold; b. installing the mold; c. closing the mold; d. installing a rotating mechanism; e. first injection molding; f. rotating the mold for the first time; g. rotating the mold for the second time; h. rotating the mold for the third time; i. rotating the mold for the fourth time; j. second injection molding; k. performing pressure-maintaining and glue-returning, cooling the mold, and then opening the mold and demolding to take out the injection-molded product. The present invention can shorten the injection molding time of the second partition bar, and at the same time increase the strength between the second partition bars, thereby preventing the inner screen plate from breaking during the one-piece injection molding; in the manufacturing method, the speed at which the molten plastic fills the entire cavity can be increased, thereby improving the injection molding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of insect breeding, and in particular relates to a novel shelf and a manufacturing method thereof. Background Art

[0002] There are more than one million species of insects in nature, which are widely distributed and have a huge overall biomass. They play a complex and important role in the ecosystem or food chain. Some insects can produce or provide raw materials, food or medicine for humans, and their role and value are worth exploring.

[0003] Humans have been using and studying insects for a long time, and especially since modern times, the intensity of research and development has been accelerated. Natural insects in nature can no longer meet human needs, so insect farming has gradually received attention. The purposes of farming are as follows: (1) to provide raw materials for humans; (2) for food or medicine; (3) to provide animal protein feed; (4) to cultivate natural enemies of pests or produce insect viruses for the prevention and control of agricultural and forestry pests; (5) for scientific research.

[0004] At present, in the aspect of breeding insects, breeding frames are used to breed insects. First, a shelf is placed in the breeding frame, and then the larvae are placed on the shelf, and feed is placed on the shelf. When the larvae grow up and are in different stages, the shelf needs to be taken out and placed in different types of breeding frames. The shelf in the prior art is a rectangular plate. When it is in the later breeding stage, the shelf generally includes an outer frame and an inner sieve plate. The inner sieve plate is composed of interlaced partitions, and uniform mesh holes are formed between the partitions to ensure air circulation and facilitate insect breeding. However, the partitions of this type of shelf are prone to breakage during injection molding, which affects the insect feeding process; and the molten plastic flows relatively slowly, resulting in a slow speed for the molten plastic to fill the entire cavity, reducing the injection molding efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and to provide a new type of shelf and a manufacturing method thereof. By arranging first partition bars on both sides of second partition bars that are cross-molded and integrally formed, the two ends of the second partition bars are trimmed to shorten the injection molding time of the second partition bars and increase the strength between the second partition bars to prevent the inner screen plate from breaking during the integral injection molding. In the manufacturing method, the speed at which the molten plastic fills the entire cavity can be increased, thereby improving the injection molding efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A novel shelf comprises an outer frame and an inner sieve plate, wherein the outer frame is arranged at the edges of the inner sieve plate, and the inner sieve plate comprises a first spacer and a second spacer, wherein the second spacer is cross-molded and formed as a whole between two adjacent first spacers. The present invention arranges the first spacer on both sides of the cross-molded second spacers, trims the two ends of the second spacer, shortens the injection molding time of the second spacer, and increases the strength between the second spacers, thereby preventing the inner sieve plate from breaking during the injection molding.

[0008] Furthermore, a third partition bar is integrally formed and injection-molded between two adjacent first partition bars, and the two adjacent third partition bars are arranged parallel to each other, and the second partition bar and the third partition bar are integrally formed and injection-molded to be connected. The third partition bar supports the two first partition bars, further preventing the inner sieve plate from breaking during the integral injection molding; and mesh holes of different sizes can be formed between the first partition bar, the second partition bar and the third partition bar, and the size of the mesh hole is 2 to 60 mm, which can be suitable for crawling insects of different sizes, while ensuring the circulation of air on the shelf, and having good ventilation and air permeability, providing a good growth environment for breeding insects.

[0009] Furthermore, the inner sieve plate is provided with a suction disc, which is connected to the first partition bar and the second partition bar, and is circular in shape. The suction disc can be supported on a support seat in the breeding frame, and has a supporting function, so that the shelf can be easily set in the breeding frame; at the same time, during the manufacturing process, the entire shelf can be moved by the suction disc.

[0010] Furthermore, a first reinforcement strip is provided between two adjacent suction discs along the width direction of the outer frame, and the first reinforcement strip is connected to the inner screen plate to increase the connection strength between the suction disc and the inner screen plate.

[0011] Furthermore, the outer frame is provided with a second reinforcement bar, which is arranged along the length direction of the outer frame and is connected to the first reinforcement bar, so that the force acting on the suction disc can be shared by the outer frame, thereby increasing the integrity of the suction disc setting.

[0012] Furthermore, chamfers are provided at the four corners of the outer frame, and the chamfers are provided to remove burrs on the shelf caused by machining.

[0013] Furthermore, edging plates are provided at the four corners of the outer frame, and the edging plates are clamped on the inner screen plate. The edging plates can protect the four corners of the outer frame, and at the same time it is convenient to apply force on the edging plates, so as to facilitate the taking and stacking of the shelves; the outer surface of the edging plates is provided with anti-slip grooves to play an anti-slip role.

[0014] Furthermore, a connecting plate is provided on the outer side of the edging plate, and the connecting plate is provided with connecting holes. When the shelves are not in use, connecting ropes are provided between the connecting holes so that the stacked shelves are fixedly connected, which facilitates the transportation of multiple shelves.

[0015] Furthermore, the length and width of the outer frame are 300 to 2000 mm, and the length and width of the outer frame are adjusted according to the breeding range.

[0016] A novel method for manufacturing a shelf, characterized by comprising the following steps:

[0017] a. Mold cleaning: first prepare the mold, pre-fabricate the groove of the mold in the shape and position of the first spacer and the second spacer, then use kerosene to clean the mold, then place the mold on the turntable, then use compressed air to blow dry the mold, and then apply anti-rust oil to the first threaded hole and guide column of the mold;

[0018] b. Install the mold: Place the mold on the injection molding table, clamp the mold with four L-shaped metal sheets, and then screw the locking screw between the second threaded hole of the L-shaped metal sheet and the first threaded hole of the mold;

[0019] c. Use the mold closing system to close the mold: Use the mold closing cylinder to fasten the closing plate to the mold, and the guide column of the mold is passed into the guide hole of the closing plate;

[0020] d. Install the rotating mechanism: insert the connecting rod into the through hole of the injection molding table, weld the connecting rod to the side of the injection molding table, weld the shaft rod to the side of the rotating ear plate, and place the shaft rod on the base, weld and fix the connecting rod to the rotating ear plate, insert the protection arm on the shaft rod, weld the support seat between the protection arms, weld and fix the support seat to the bottom surface of the injection molding table, and then fix the shaft rod to the driving device;

[0021] e. First injection: Control the drive device to maintain the initial state, the protection arm is in a horizontal state, the rotating ear plate is in a vertical state, and the mold is in a horizontal state. Then the hydraulic system is used to adjust the injection pressure and injection speed, and the screw of the injection system is used to inject the molten plastic into the mold cavity. The amount of molten plastic injected is 3 / 4 of the total injection amount;

[0022] f. Rotate the mold for the first time: Start the driving device, control the rotating ear plate to rotate 90° clockwise, the rotating ear plate is in a horizontal state, and the mold is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold. The mold remains in a vertical state for 20-30 seconds before proceeding to the next step;

[0023] g. Rotate the mold for the second time: Control the rotating ear plate to rotate 90° counterclockwise through the driving device, the mold is in a horizontal state, and maintain the horizontal state for 10-15 seconds before proceeding to the next step;

[0024] h. Rotate the mold for the third time: Control the rotating ear plate to rotate 90° counterclockwise through the driving device. The rotating ear plate is in a horizontal state. At this time, the mold is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold. The mold remains in a vertical state for 30-40 seconds before proceeding to the next step.

[0025] i. Rotate the mold for the fourth time: control the rotating ear plate to rotate 90° clockwise through the driving device, the mold is in a horizontal state, and stand still for 1-2 minutes;

[0026] j. Second injection: The hydraulic system is used to adjust the injection pressure and injection speed, and the screw of the injection system is used to inject the molten plastic into the mold cavity. The amount of molten plastic injected is the remaining amount;

[0027] k. Maintain the pressure and return the glue, then cool the mold, open the mold and demould, and take out the injection molded product.

[0028] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0029] The present invention arranges first partition bars on both sides of second partition bars that are cross-molded and formed integrally, and trims the ends of the second partition bars, thereby shortening the injection molding time of the second partition bars and increasing the strength between the second partition bars, thereby preventing the inner screen plate from breaking during the injection molding.

[0030] A third partition bar parallel to each other is connected between the two first partition bars. The third partition bar supports the two first partition bars, further preventing the inner screen plate from breaking during one-piece injection molding. Moreover, mesh holes of different sizes can be formed between the first partition bar, the second partition bar and the third partition bar. The size of the mesh hole is 2 to 60 mm, which can be suitable for crawling insects of different sizes. At the same time, the air circulation of the shelf is ensured, and the ventilation and air permeability are good, providing a good growth environment for breeding insects.

[0031] The present invention arranges edging plates at the four corners of the outer frame, and the edging plates are clamped on the inner screen plate. The edging plates can protect the four corners of the outer frame, and at the same time, it is convenient to apply force on the edging plates, so as to facilitate the taking and stacking of the shelves.

[0032] During manufacturing, the mold is cleaned, the mold is blown dry with compressed air, and then anti-rust oil is applied to the threaded holes and guide columns of the mold to remove dirt from the grooves of the mold. During injection molding, first control the amount of molten plastic injected to be 3 / 4 of the total injection amount, rotate the mold 90° clockwise for the first time, and the rotating ear plate is in a horizontal state. At this time, the mold is in a vertical state. At the same time, a rubber hammer is used to knock on the side of the mold, so that the accumulated molten plastic flows to the right under the action of inertia, and then the driving device controls the rotating ear plate to rotate 90° counterclockwise, and the mold is in a horizontal state, so that the molten plastic is spread on the right end of the mold, and then the driving device controls the rotating ear plate to rotate 90° counterclockwise, and the rotating ear plate is in a horizontal state. At this time, the mold is in a vertical state, and a rubber hammer is used to knock on the side of the mold, so that the accumulated molten plastic flows to the left under the action of inertia, and then the driving device controls the rotating ear plate to rotate 90° clockwise, and the mold is in a horizontal state. It is left to stand for 1-2 minutes, so that the molten plastic is quickly and evenly spread in the mold, and finally the remaining amount of the molten plastic is injected to increase the speed at which the molten plastic fills the entire cavity and improves the injection molding efficiency. After the first clockwise rotation, the mold remains in a vertical state for 15-20 seconds. After the second counterclockwise rotation, the mold remains in a horizontal state for 10-15 seconds, so that the molten plastic spread to the right end of the mold can flow to the left, which is convenient for the molten plastic to flow to the left end of the mold. Therefore, after the third counterclockwise rotation, the mold remains in a vertical state for 30-40 seconds. The residence time is longer, so that the molten plastic can reach the leftmost end of the mold cavity. After the mold is rotated for the fourth time, it is left to stand for 1-2 minutes to allow the molten plastic to fill the entire cavity. The time for the four rotations is reasonably allocated. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the edge plate in the second embodiment of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the mold in the present invention;

[0038] Figure 5 It is a structural schematic diagram of the injection molding table in the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the present invention during the first injection molding;

[0040] Figure 7This is a schematic diagram of the structure of the present invention when the mold is rotated for the first time;

[0041] Figure 8 It is a schematic structural diagram of the present invention when the mold is rotated for the third time.

[0042] In the figure, 1-outer frame; 2-inner sieve plate; 3-suction disc; 4-first reinforcement strip; 5-second reinforcement strip; 6-chamfer; 7-edging plate; 8-anti-slip pattern; 9-connecting plate; 10-connecting hole; 11-mold; 12-guide column; 13-first threaded hole; 14-L-shaped metal sheet; 15-injection molding table; 16-second threaded hole; 17-combination mold plate; 18-through hole; 19-connecting rod; 20-rotating ear plate; 21-first spacer strip; 22-second spacer strip; 23-third spacer strip; 24-support seat; 25-driving device; 26-axis rod; 27-base; 28-protective arm. DETAILED DESCRIPTION

[0043] like Figure 1 As shown, it is the first embodiment of the present invention, which specifically includes an outer frame 1 and an inner sieve plate 2, and the outer frame 1 is arranged at the edges of the inner sieve plate 2. The inner sieve plate 2 includes a first partition bar 21 and a second partition bar 22, and the second partition bar 22 is cross-molded and formed between two adjacent first partition bars 21. A third partition bar 23 parallel to each other is connected between the two first partition bars 21, and two adjacent third partition bars 23 are arranged parallel to each other. The second partition bar 22 and the third partition bar 23 are connected by integral molding by injection molding, and the third partition bar 23 plays a supporting role between the two first partition bars 21, further preventing the inner sieve plate 2 from breaking during the integral molding of injection molding; and meshes of different sizes can be formed between the first partition bar 21, the second partition bar 22 and the third partition bar 23, and the size of the mesh is 2 to 60 mm, which can be suitable for the crawling of insects of different sizes, while ensuring the circulation of air on the shelf, and having good ventilation and air permeability, providing a good growth environment for breeding insects.

[0044] The inner sieve plate 2 is provided with a suction disc 3, and the suction disc 3 is connected to the first partition bar 21 and the second partition bar 22. The suction disc 3 can be supported on the support seat in the breeding frame, and has a supporting function, which is convenient for setting the shelf in the breeding frame; at the same time, during the manufacturing process, the entire shelf can be moved by the suction disc 3. The suction disc 3 is circular, which is convenient for connecting the suction disc 3 with the first partition bar 21, the second partition bar 22, and the third partition bar 23. Chamfers 6 are provided at the four corners of the outer frame 1, and the chamfers 6 are provided to remove burrs on the shelf caused by machining. The length and width of the outer frame 1 are 300 to 2000 mm, and the length and width of the outer frame 1 are adjusted according to the breeding range.

[0045] like Figure 2 and Figure 3As shown, it is the second embodiment of the present invention, which specifically includes an outer frame 1 and an inner sieve plate 2, and the outer frame 1 is arranged at the edges of the inner sieve plate 2. The inner sieve plate 2 includes a first partition bar 21 and a second partition bar 22, and the second partition bar 22 is cross-molded and formed between two adjacent first partition bars 21. A third partition bar 23 parallel to each other is connected between the two first partition bars 21, and two adjacent third partition bars 23 are arranged parallel to each other. The second partition bar 22 and the third partition bar 23 are connected by integral molding by injection molding, and the third partition bar 23 plays a supporting role between the two first partition bars 21, further preventing the inner sieve plate 2 from breaking during the integral molding of injection molding; and meshes of different sizes can be formed between the first partition bar 21, the second partition bar 22 and the third partition bar 23, and the size of the mesh is 2 to 60 mm, which can be suitable for the crawling of insects of different sizes, while ensuring the circulation of air on the shelf, and having good ventilation and air permeability, providing a good growth environment for breeding insects.

[0046] The inner sieve plate 2 is provided with a suction disc 3, and the suction disc 3 is connected to the first partition bar 21 and the second partition bar 22. The suction disc 3 can be supported on the support seat in the breeding frame, and has a supporting function, which is convenient for setting the shelf in the breeding frame; at the same time, during the manufacturing process, the entire shelf can be moved by the suction disc 3. The suction disc 3 is circular, which is convenient for connecting the suction disc 3 with the first partition bar 21, the second partition bar 22, and the third partition bar 23. Chamfers 6 are provided at the four corners of the outer frame 1, and the chamfers 6 are provided to remove burrs on the shelf caused by machining. The length and width of the outer frame 1 are 300 to 2000 mm, and the length and width of the outer frame 1 are adjusted according to the breeding range.

[0047] A first reinforcing strip 4 is provided between two adjacent suction discs 3 along the width direction of the outer frame 1, and the first reinforcing strip 4 is connected to the inner sieve plate 2 to increase the connection strength between the suction disc 3 and the inner sieve plate 2. The outer frame 1 is provided with a second reinforcing strip 5, and the second reinforcing strip 5 is provided along the length direction of the outer frame 1, and the second reinforcing strip 5 is connected to the first reinforcing strip 4, so that the force on the suction disc 3 can be shared by the outer frame 1, thereby increasing the integrity of the suction disc 3.

[0048] The four corners of the outer frame 1 are provided with edging plates 7, which are clamped on the inner sieve plate 2. The edging plates 7 can protect the four corners of the outer frame 1, and at the same time, it is convenient to apply force on the edging plates 7, so as to facilitate the taking and stacking of the shelves. The outer surface of the edging plates 7 is provided with anti-skid patterns 8, which play an anti-skid role. The outer side of the edging plates 7 is provided with a connecting plate 9, and the connecting plate 9 is provided with a connecting hole 10. When the shelf is not in use, a connecting rope is provided between the connecting holes 10, so that the stacked shelves are fixedly connected, which is convenient for transporting multiple shelves.

[0049] The present invention connects the first partition bar 21 on both sides of the second partition bar 22 that are cross-molded and formed integrally, so that the two ends of the second partition bar 22 can be trimmed, thereby shortening the injection molding time of the second partition bar 22 and increasing the strength between the second partition bars 22. Then, the third partition bar 23 that is parallel to each other is connected between the two first partition bars 21. The third partition bar 23 supports the two first partition bars 21 to prevent the inner sieve plate 2 from breaking during the injection molding. Moreover, mesh holes of different sizes can be formed between the first partition bar 21, the second partition bar 22 and the third partition bar 23. The size of the mesh hole is 2-60mm, which can be suitable for the crawling of insects of different sizes. At the same time, the air circulation of the shelf is ensured, and the ventilation and air permeability are good, providing a good growth environment for breeding insects.

[0050] like Figure 4 and Figure 8 As shown, a method for manufacturing a novel shelf of the present invention comprises the following steps:

[0051] a. Cleaning of the mold 11: First, prepare the mold 11. The grooves of the mold 11 are prefabricated in the shape and position of the first spacer and the second spacer, wherein the grooves corresponding to the second spacer are intersectingly arranged between the grooves corresponding to two adjacent first spacers. Then, use kerosene to clean the mold 11, and then place the mold 11 on a turntable. Then, use compressed air to blow dry the mold 11, and then apply anti-rust oil to the first threaded hole 13 and the guide column 12 of the mold 11.

[0052] b. Install the mold 11: Place the mold 11 on the injection molding table 15, clamp the mold 11 with four L-shaped metal sheets 14, and then screw the locking screws between the second threaded holes 16 of the L-shaped metal sheets 14 and the first threaded holes 13 of the mold 11.

[0053] c. Use the mold clamping system to close the mold 11: Use the mold clamping cylinder to fasten the clamping plate 17 to the mold 11, and the guide column 12 of the mold 11 is inserted into the guide hole of the clamping plate 17.

[0054] d. Install the rotating mechanism: insert the connecting rod 19 into the through hole 18 of the injection molding table 15, and then weld the connecting rod 19 to the side of the injection molding table 15. Then weld the shaft rod 26 to the side of the rotating ear plate 20, and set the shaft rod 26 on the base 27. Then weld the connecting rod 19 and the rotating ear plate 20, and then insert the protection arm 28 on the shaft rod 26, and then weld the support seat 24 between the protection arms 28, and weld the support seat 24 to the bottom surface of the injection molding table 15, and then fix the shaft rod 26 to the driving device 25.

[0055] e. First injection: Control the drive device 25 to maintain the initial state, the protection arm 28 is in a horizontal state, the rotating ear plate 20 is in a vertical state, and the mold 11 is in a horizontal state. Then use the hydraulic system to adjust the injection pressure and injection speed, and use the screw of the injection system to inject the molten plastic into the cavity of the mold 11. The amount of molten plastic injected is 3 / 4 of the total injection amount.

[0056] f. Rotate the mold 11 for the first time: start the driving device 25, control the rotating ear plate 20 to rotate 90° clockwise, the rotating ear plate 20 is in a horizontal state, and the mold 11 is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold 11. The mold 11 remains in the vertical state for 20-30 seconds, and then proceed to the next step.

[0057] g. Rotate the mold 11 for the second time: control the rotating ear plate 20 to rotate 90° counterclockwise through the driving device 25, and the mold 11 is in a horizontal state, and maintains the horizontal state for 10-15 seconds, and then proceeds to the next step.

[0058] h. Rotate the mold 11 for the third time: control the rotating ear plate 20 to rotate 90° counterclockwise through the driving device 25. The rotating ear plate 20 is in a horizontal state. At this time, the mold 11 is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold 11. The mold 11 remains in the vertical state for 30-40 seconds before proceeding to the next step.

[0059] i. Rotate the mold 11 for the fourth time: control the rotating ear plate 20 to rotate 90° clockwise through the driving device 25, and the mold 11 is in a horizontal state and is left to stand for 1-2 minutes.

[0060] j. Second injection: The injection pressure and injection speed are adjusted by a hydraulic system, and the molten plastic is injected into the cavity of the mold 11 by the screw of the injection system, and the amount of the injected molten plastic is the remaining amount.

[0061] k. Maintain the pressure and return the glue, then cool the mold 11, then open the mold and demould, and take out the injection molded product.

[0062] During the manufacturing process of the present invention, the mold 11 is cleaned, and then the mold 11 is blown dry with compressed air. Then, anti-rust oil is applied to the threaded holes and guide posts 12 of the mold 11, and dirt in the grooves of the mold 11 is removed. During injection molding, the amount of molten plastic injected is first controlled to be 3 / 4 of the total amount injected. The mold 11 is rotated clockwise for the first time by 90°, and the rotating ear plate 20 is in a horizontal state. At this time, the mold 11 is in a vertical state. At the same time, a rubber hammer is used to knock the side of the mold 11, so that the accumulated molten plastic flows to the right under the action of inertia. Then, the driving device 25 is used to control the rotating ear plate 20 to rotate 90° counterclockwise, and the mold 11 is in a horizontal state, so that the molten plastic is spread at the right end of the mold 11. Then, the driving device 25 is used to control the rotating ear plate 20 to rotate 90° counterclockwise. The mold 11 is in a horizontal state, so that the molten plastic is spread at the right end of the mold 11. 20 is rotated 90° counterclockwise, the rotating ear plate 20 is in a horizontal state, and the mold 11 is in a vertical state. At the same time, a rubber hammer is used to knock the side of the mold 11, so that the accumulated molten plastic flows to the left under the action of inertia, and then the driving device 25 is used to control the rotating ear plate 20 to rotate 90° clockwise, and the mold 11 is in a horizontal state, and it is left to stand for 1-2 minutes, so that the molten plastic is quickly and evenly spread in the mold 11, and finally the remaining amount of the molten plastic is injected to increase the speed at which the molten plastic fills the entire cavity and improve the injection molding efficiency. After the first clockwise rotation, the mold 11 remains in a vertical state for 15-20 seconds, and after the second counterclockwise rotation, the mold 11 remains in a horizontal state for 10-15 seconds, so that the molten plastic spread to the right end of the mold 11 can flow to the left, which is convenient for the molten plastic to flow to the left end of the mold 11. Therefore, after the third counterclockwise rotation, the mold 11 remains in a vertical state for 30-40 seconds. The residence time is longer, so that the molten plastic can reach the leftmost end of the mold cavity of the mold 11. After the mold 11 is rotated for the fourth time, it is left to stand for 1-2 minutes to allow the molten plastic to fill the entire cavity, and the time for the four rotations is reasonably allocated.

[0063] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A method for manufacturing a novel shelf, characterized in that: The novel shelf comprises an outer frame and an inner screen plate, wherein the outer frame is arranged at the edges of the inner screen plate, and the inner screen plate comprises a first partition bar and a second partition bar, wherein the second partition bars are cross-molded and integrally formed between two adjacent first partition bars; The manufacturing method comprises the following steps: a. Mold cleaning: first prepare the mold, pre-fabricate the groove of the mold in the shape and position of the first spacer and the second spacer, then use kerosene to clean the mold, then place the mold on the turntable, then use compressed air to blow dry the mold, and then apply anti-rust oil to the first threaded hole and guide column of the mold; b. Install the mold: Place the mold on the injection molding table, clamp the mold with four L-shaped metal sheets, and then screw the locking screw between the second threaded hole of the L-shaped metal sheet and the first threaded hole of the mold; c. Use the mold clamping system to close the mold: Use the mold clamping cylinder to fasten the clamping plate to the mold, and the guide column of the mold is passed into the guide hole of the clamping plate; d. Install the rotating mechanism: insert the connecting rod into the through hole of the injection molding table, weld the connecting rod to the side of the injection molding table, weld the shaft rod to the side of the rotating ear plate, and place the shaft rod on the base, weld and fix the connecting rod to the rotating ear plate, insert the protection arm on the shaft rod, weld the support seat between the protection arms, weld and fix the support seat to the bottom surface of the injection molding table, and then fix the shaft rod to the driving device; e. First injection: Control the drive device to maintain the initial state, the protection arm is in a horizontal state, the rotating ear plate is in a vertical state, and the mold is in a horizontal state. Then the hydraulic system is used to adjust the injection pressure and injection speed, and the screw of the injection system is used to inject the molten plastic into the mold cavity. The amount of molten plastic injected is 3 / 4 of the total injection amount; f. Rotate the mold for the first time: Start the driving device, control the rotating ear plate to rotate 90° clockwise, the rotating ear plate is in a horizontal state, and the mold is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold. The mold remains in a vertical state for 15-20 seconds before proceeding to the next step; g. Rotate the mold for the second time: Control the rotating ear plate to rotate 90° counterclockwise through the driving device, the mold is in a horizontal state, and maintain the horizontal state for 10-15 seconds before proceeding to the next step; h. Rotate the mold for the third time: Control the rotating ear plate to rotate 90° counterclockwise through the driving device. The rotating ear plate is in a horizontal state. At this time, the mold is in a vertical state. At the same time, use a rubber hammer to knock the side of the mold. The mold remains in a vertical state for 30-40 seconds before proceeding to the next step. i. Rotate the mold for the fourth time: control the rotating ear plate to rotate 90° clockwise through the driving device, the mold is in a horizontal state, and stand still for 1-2 minutes; j. Second injection: The hydraulic system is used to adjust the injection pressure and injection speed, and the screw of the injection system is used to inject the molten plastic into the mold cavity. The amount of molten plastic injected is the remaining amount; k. Maintain the pressure and return the glue, then cool the mold, open the mold and demould, and take out the injection molded product.

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