Injection molding device for logistics box body

Abstract

The utility model provides a logistics box body injection molding device. The logistics box body injection molding device at least comprises a bottom plate; a male die is formed on the fixed die; the movable die is matched with the fixed die and forms a concave die corresponding to the convex die; the panel is mounted on the movable mold; the feeding mechanism is mounted on the panel and is matched with the movable mold; the movable mold mechanism is mounted on the movable mold; an inserting block is arranged on the movable die; the movable die mechanism comprises a movable side die surrounding the periphery of the convex die; when the fixed mold and the movable mold are closed, an injection molding cavity is defined between the female mold and the male mold, a first groove-shaped structure communicating with the injection molding cavity is defined between the insertion block and the movable side mold, and molten plastic is input into the injection molding cavity and cooled to form a logistics box body; and the molten plastic entering the first groove-shaped structure can form a groove-shaped handle structure on the side wall of the logistics box body after being cooled. The device can form a handle structure without additionally arranging a core pulling structure, and is simple in structure and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an injection molding device for logistics box bodies. Background Technology

[0002] Turnover boxes, also known as logistics boxes, are widely used in industries such as machinery, automobiles, home appliances, light industry, and electronics. They are acid and alkali resistant, oil resistant, non-toxic, and odorless, suitable for storing food, easy to clean, and facilitate the convenient turnover of parts, neat stacking, and easy management. Their rational design and excellent quality make them suitable for transportation, distribution, storage, and processing in factory logistics. However, turnover boxes are manufactured using injection molding. After injection molding, handle grooves need to be machined on both sides of the turnover box using a cutting process, which is time-consuming and labor-intensive.

[0003] As disclosed in Chinese Utility Model Patent Publication No. CN216032160U, a logistics turnover box injection mold with an in-slot core-pulling mechanism for armrests is presented. The mold includes an upper mold plate and a lower mold plate. Four rectangular side inserts are arranged between the upper and lower mold plates. A molding insert inserted into the middle of the four side inserts is also provided on the lower mold plate. The molding insert, the four side inserts, and the upper mold plate combine to form a molding cavity. A lifting mechanism connected to the upper mold plate is provided on two symmetrically arranged side inserts, and a combined core-pulling mechanism is provided on the other two symmetrically arranged side inserts. The combined core-pulling mechanism can injection mold two armrest grooves on both sides of the turnover box in one operation, eliminating the need for subsequent machining, saving time and effort. The combined core-pulling mechanism facilitates the disassembly of the core blocks, reducing repair or replacement costs when the core blocks are damaged. The lifting mechanism can drive the upper mold plate upwards, thereby detaching the upper mold plate from the side inserts.

[0004] As described in the aforementioned patent, although the existing technology can mold two handrail grooves on both sides of the turnover box in one injection without the need for subsequent cutting processing, it requires the use of a core-pulling structure, which results in higher costs. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a logistics box body injection molding device to solve the problem of high cost in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a logistics box body injection molding device, comprising at least:

[0007] Base plate;

[0008] A fixed mold is fixedly installed on a base plate and has a punch protruding from the base plate in a direction away from the base plate.

[0009] The moving mold, which cooperates with the fixed mold and forms a die corresponding to the punch;

[0010] a fixed die;

[0011] a feeding mechanism mounted on the fixed die and matched with the movable die;

[0012] a movable die mechanism mounted on the movable die;

[0013] the movable die is provided with an insert block, the movable die mechanism comprises movable side dies surrounding the outer periphery of the male die, and the insert block, the movable die and the movable side dies jointly enclose a female die;

[0014] when the fixed die and the movable die are closed, the female die and the male die jointly enclose a plastic injection cavity, the insert block and the movable side dies jointly enclose a first slot structure connected with the plastic injection cavity, the molten plastic is input into the plastic injection cavity under the action of the feeding mechanism, and after cooling, a logistics box body is formed, and the molten plastic entering the first slot structure is cooled to form a slot handle structure on the side wall of the logistics box body.

[0015] in an embodiment of the present application, the movable side dies are provided with a second slot structure matched with the insert block.

[0016] in an embodiment of the present application, the movable die mechanism further comprises a first driving member, a connecting block and a guide strip, the movable side dies are two pairs and each pair of movable side dies is oppositely arranged, one pair of movable side dies is movably connected with the other pair of movable side dies through the guide strip, the first driving member is mounted on the side wall of one pair of movable side dies, and the connecting block is mounted on the movable die and connected with the first driving member.

[0017] in an embodiment of the present application, the movable die is provided with a plurality of guide rods, and each movable side die is provided with at least one first guide hole matched with the guide rods.

[0018] in an embodiment of the present application, the fixed die is provided with a guide column, and the movable die is provided with a second guide hole matched with the guide column.

[0019] in an embodiment of the present application, the logistics box body injection molding device further comprises an ejection mechanism, the ejection mechanism comprises a push plate arranged on the fixed die and sleeved on the outer periphery of the male die, and the ejection mechanism is used for ejecting the formed logistics box body.

[0020] in an embodiment of the present application, the push plate is provided with a third guide hole matched with the guide column.

[0021] in an embodiment of the present application, when the fixed die and the movable die are closed, a third slot structure connected with the plastic injection cavity is formed between the movable side dies and the push plate, and the molten plastic entering the third slot structure is cooled to form a folded edge structure on the logistics box body.

[0022] In an embodiment of the utility model, the feeding mechanism at least includes:

[0023] The feeding nozzle is installed on the panel.

[0024] The hot runner assembly is installed between the movable die and the panel and cooperates with the feeding nozzle and the injection cavity respectively.

[0025] In an embodiment of the utility model, the hot runner assembly includes a hot runner plate, a flow divider, a needle valve type hot nozzle and a cylinder. The hot runner plate is installed between the panel and the movable die. The flow divider is installed on the hot runner plate and communicates with the feeding nozzle. The needle valve type hot nozzle is installed on the movable die and communicates with the flow divider. The cylinder is installed on the panel and cooperates with the needle valve type hot nozzle. The movable die is provided with a feeding hole which communicates with the injection cavity and cooperates with the needle valve type hot nozzle.

[0026] As described above, the utility model discloses a kind of logistics box body injection molding device, with following beneficial effects:

[0027] 1, the utility model provides a kind of logistics box body injection molding device of new structure, the logistics box body injection molding device is the special mould of the box body of production logistics box, can be formed into required product by injection molding quickly once, production efficiency is high, can replace manual realization mass production, satisfy use demand;

[0028] 2, the forming device inserts block on movable die, and first slot structure that can be formed with injection cavity is communicated after block is closed, and the molten plastic is input into injection cavity under the action of feeding mechanism, forms logistics box body after cooling, and the molten plastic in first slot structure is cooled and will form slot handle structure on the side wall of logistics box body, the utility model can form handle structure without additional core-pulling structure, simple structure and low cost.

[0029] 3, push plate type stripping structure is used, without setting ejector pin structure, effectively simplify structure, save cost. DRAWINGS

[0030] Figure 1 It is the schematic diagram of the whole three-dimensional structure of the utility model;

[0031] Figure 2 It is Figure 1 The schematic diagram of the explosion structure of the whole shown in one of;

[0032] Figure 3 It is Figure 1 The schematic diagram of the partial structure of the whole shown in one of;

[0033] Figure 4 It is the schematic diagram of the hot runner plate of the utility model;

[0034] Figure 5 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0035] Figure 6 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model; Figure 1 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0036] Figure 7 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model; Figure 6 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0037] Figure 8 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model; Figure 1 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0038] Figure 9 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0039] Figure 10 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model; Figure 9 It is the three-dimensional structure schematic view of the movable die mechanism of the utility model;

[0040] Figures 1-10 In the drawing: 1 - bottom plate; 2 - fixed die; 3 - demolding mechanism; 4 - movable die; 5 - panel; 6 - movable die mechanism; 7 - feeding mechanism; 8 - first cooling mechanism; 9 - second cooling mechanism; 10 - third cooling mechanism; 21 - male die; 22 - guide column; 31 - push plate; 40 - female die; 41 - plug; 42 - guide rod; 43 - second guide hole; 44 - feeding hole; 45 - protruding structure; 61 - movable side die; 62 - first driving part; 63 - connecting block; 64 - guide strip; 71 - hot runner assembly; 81 - first cooling pipeline; 91 - second cooling pipeline; 101 - third cooling pipeline; 311 - third guide hole; 611 - first guide hole; 612 - second groove structure; 613 - fourth groove structure; 614 - guide groove; 711 - hot runner plate; 712 - needle valve type hot nozzle; 100 - injection cavity; 200 - first groove structure; 300 - third groove structure; 400 - logistics box body; 400a - groove handle structure; 400b - folding edge structure; 400c - square grid; 400d - reinforcing rib. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0042] Need to explain, the following examples provided in the illustration only to illustrate the basic concept of the utility model, the drawing shows only the components related to the utility model is not drawn according to the actual implementation of the number of components, shape and size, its actual implementation of each component type, quantity and proportion can be a random change, and its component layout type may be more complex.

[0043] Please refer to Figures 1-10 , the utility model provides the logistics box body injection molding device of the following examples, the logistics box body injection molding device belongs to the field of manufacturing mold, can solve the problem of high cost in prior art.

[0044] As Figures 1-10 shown, the utility model provides one of the ways of logistics box body injection molding device.

[0045] The logistics box body injection molding device at least includes:

[0046] The bottom plate 1 is fixedly installed on the bottom plate 1 and is formed with a convex die 21 based on the bottom plate 1 in the direction away from the bottom plate 1.

[0047] The fixed die 2 is fixedly installed on the bottom plate 1 and is formed with a convex die 21 based on the bottom plate 1 in the direction away from the bottom plate 1.

[0048] The movable die 4 is matched with the fixed die 2 and is formed with the concave die 40 corresponding to the convex die 21.

[0049] The panel 5 is installed on the movable die 4.

[0050] The feeding mechanism 7 is installed on the panel 5 and matched with the movable die 4.

[0051] The movable die mechanism 6 is installed on the movable die 4.

[0052] The movable die 4 is provided with the plug 41, the movable die mechanism 6 includes the movable side die 61 surrounding the outer periphery of the convex die 21, the plug 41, the movable die 4 and the movable side die 61 jointly form the concave die 40.

[0053] When the fixed die 2 and the movable die 4 are closed, the concave die 40 and the convex die 21 are enclosed to form the injection cavity 100, the plug 41 and the movable side die 61 are enclosed to form the first slot structure 200 communicated with the injection cavity 100, the molten plastic is input into the injection cavity 100 under the action of the feeding mechanism 7, and after cooling, the logistics box body 400 is formed, and the molten plastic entering the first slot structure 200 is cooled to form the slot handle structure 400a on the side wall of the logistics box body 400.

[0054] In the embodiment, the movable side die 61 is formed with the second slot structure 612 matched with the plug 41.

[0055] In the embodiment, the movable die 4 is provided with a plurality of guide rods 42, and each movable side die 61 is provided with at least one first guide hole 611 which is in sliding fit with the guide rod 42. The guide rod 42 is a slanted guide rod 42, and the first guide hole 611 is a slanted hole. In order to ensure smooth mold opening and closing, the fixed die 2 is also provided with a slanted guide hole which is in fit with the guide rod 42.

[0056] In the embodiment, the movable die mechanism 6 further comprises a first driving member 62, a connecting block 63 and a guide strip 64. The movable side dies 61 are arranged in two pairs, and each pair of movable side dies 61 is arranged oppositely. One pair of movable side dies 61 is movably connected with the other pair of movable side dies 61 through the guide strip 64. The first driving member 62 is installed on the side wall of one pair of movable side dies 61, and the connecting block 63 is installed on the movable die 4 and connected with the first driving member 62.

[0057] The guide strip 64 is fixedly installed on the edge of one pair of oppositely arranged movable side dies 61 by screws, and the outer wall of the other pair of oppositely arranged movable side dies 61 is provided with a guide groove 614 which is in sliding fit with the guide strip 64. Thus, under the driving of the first driving member 62, the guide groove 614 and the guide strip 64 can play a guiding role, and in combination with the guiding roles of the guide rod 42 and the first guide hole 611, the movable die mechanism 6 can run smoothly and accurately during mold opening and closing.

[0058] Preferably, the first driving member 62 is a telescopic air cylinder.

[0059] Preferably, the movable die 4 is provided with a protruding structure 45. The molten plastic is input into the injection cavity 100 under the action of the feeding mechanism 7, and forms the logistics box body 400 after cooling. The protruding structure 45 is arranged to make the molten plastic form a square grid 400c on the bottom of the logistics box body 400 after cooling. The square grid 400c can at least play the roles of ventilation and strengthening structure.

[0060] Preferably, the inner wall of each movable side die 61 can be provided with a fourth groove structure 613. The molten plastic is input into the injection cavity 100 under the action of the feeding mechanism 7, and then flows into the fourth groove structure 613. The plastic flowing into the fourth groove structure 613 forms a reinforcing rib 400d on the side wall of the logistics box body 400 after cooling. The reinforcing rib 400d can not only improve the aesthetics of the logistics box body 400, but also improve the strength of the logistics box body 400 and enhance the service life.

[0061] In the embodiment, the fixed die 2 is provided with a guide column 22, and the movable die 4 is provided with a second guide hole 43 which is in fit with the guide column 22.

[0062] Preferably, the number of guide columns 22 is four, and they are distributed at the four corners of the fixed die 2.

[0063] In the embodiment, the injection molding device of the logistics box body further comprises a demolding mechanism 3, the demolding mechanism 3 comprises a push plate 31 arranged on the fixed mold 2 and sleeved on the outer periphery of the male mold 21 and a second driving member for driving the push plate 31 to move, and the demolding mechanism 3 is used for demolding the formed logistics box body 400.

[0064] In the embodiment, the push plate 31 is provided with a third guide hole 311 matched with the guide column 22.

[0065] The second driving member can be a driving member such as a separate cylinder mounted on the bottom plate 1, or a combined driving linkage structure of an external cylinder driving member and a telescopic sleeve, the two ends of the telescopic sleeve being respectively connected to the push plate 31 and the movable mold 4, and the opening of the movable mold 4 is driven to realize the linkage driving of the push plate 31.

[0066] In the embodiment, when the fixed mold 2 and the movable mold 4 are closed, a third groove structure 300 in communication with the injection cavity 100 is formed between the movable side mold 61 and the push plate 31. The molten plastic entering the third groove structure 300 will form a folded edge structure 400b on the logistics box body 400 after cooling.

[0067] In the embodiment, the feeding mechanism 7 at least comprises:

[0068] a feeding nozzle mounted on the panel 5;

[0069] a hot runner assembly 71 mounted between the movable mold 4 and the panel 5 and matched with the feeding nozzle and the injection cavity 100 respectively;

[0070] In the embodiment, the hot runner assembly 71 comprises a hot runner plate 711, a flow divider, a needle valve type hot nozzle 712 and a cylinder, the hot runner plate 711 is mounted between the panel 5 and the movable mold 4, the flow divider is mounted on the hot runner plate 711 and in communication with the feeding nozzle, the needle valve type hot nozzle 712 is mounted on the movable mold 4 and in communication with the flow divider, the cylinder is mounted on the panel 5 and matched with the needle valve type hot nozzle 712, and the movable mold 4 is provided with a feeding hole 44 in communication with the injection cavity 100 and matched with the needle valve type hot nozzle 712.

[0071] As preferred, the hot runner plate 711 of the embodiment is further provided with a limiting slot matched with the flow divider, and a heat dissipation slot and a wiring slot in communication with the limiting slot.

[0072] As preferred, the flow divider of the embodiment can be a flow divider plate with multiple outlets, and the corresponding needle valve type hot nozzle 712 is multiple.

[0073] In order to realize the complete function of the hot runner assembly 71, the hot runner assembly 71 of the embodiment naturally also comprises thermocouples, heating resistors, terminal boxes, air path pipes, electromagnetic valves and the like, which are prior art and will not be described in detail here.

[0074] In the embodiment, the logistics box body injection molding device further comprises a first cooling mechanism 8 for cooling the male die 21, a second cooling mechanism 9 for cooling the plug block 41, and a third cooling mechanism 10 for cooling the movable side die 61. The first cooling mechanism 8 at least comprises a first cooling pipe 81 arranged on the fixed die 2 and extending into the interior of the male die 21. The second cooling mechanism 9 at least comprises a second cooling pipe 91 arranged on the hot runner plate 711 and extending into the interior of the plug block 41. The third cooling mechanism 10 at least comprises a third cooling pipe 101 arranged on the movable side die 61.

[0075] As described above, the logistics box body injection molding device has the following beneficial effects:

[0076] 1. The logistics box body injection molding device has a novel structure, is a special mold for producing logistics box bodies, can quickly injection mold the required product at one time, has high production efficiency, can replace manual work to realize mass production, and meets the use requirement.

[0077] 2. The molding device is embedded with the plug block 41 on the movable die 4, and the plug block 41 can form the first groove type structure 200 communicated with the injection cavity 100 after the mold is closed. The molten plastic is input into the injection cavity 100 under the action of the feeding mechanism 7, forms the logistics box body 400 after cooling, and the molten plastic entering the first groove type structure 200 forms the groove handle structure 400a on the side wall of the logistics box body 400 after cooling. The logistics box body injection molding device can form the handle structure without additionally adding a core pulling structure, has a simple structure, and is low in cost.

[0078] 3. The push plate type demolding structure is adopted, and the ejector pin and other structures do not need to be arranged, so that the structure is effectively simplified, and the cost is saved.

[0079] The above embodiment only exemplarily illustrates the principle and effect of the logistics box body injection molding device, and is not used to limit the logistics box body injection molding device. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and category of the logistics box body injection molding device. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the logistics box body injection molding device should be covered by the claims of the logistics box body injection molding device.

Claims

1. A logistics box body injection molding device, comprising at least: a bottom plate (1); a fixed mold (2) fixedly installed on the bottom plate (1) and formed with a male mold (21) protruding away from the bottom plate (1) based on the bottom plate (1); a movable mold (4) matched with the fixed mold (2) and formed with a female mold (40) corresponding to the male mold (21); a panel (5) installed on the movable mold (4); a feeding mechanism (7) installed on the panel (5) and matched with the movable mold (4); a movable mold mechanism (6) installed on the movable mold (4); characterized in that the movable mold (4) is provided with an insertion block (41), the movable mold mechanism (6) comprises movable side molds (61) surrounding the outer periphery of the male mold (21), and the insertion block (41), the movable mold (4) and the movable side molds (61) jointly enclose the female mold (40); when the fixed mold (2) and the movable mold (4) are closed, the female mold (40) and the male mold (21) jointly enclose an injection cavity (100), the insertion block (41) and the movable side molds (61) jointly enclose a first groove structure (200) communicating with the injection cavity (100), molten plastic is input into the injection cavity (100) under the action of the feeding mechanism (7), and after cooling, a logistics box body (400) is formed, and molten plastic entering the first groove structure (200) will form a groove handle structure (400a) on the side wall of the logistics box body (400) after cooling.

2. The logistics box injection molding device according to claim 1, characterized in that, The movable side mold (61) is formed with a second groove structure (612) matched with the insertion block (41).

3. The logistics box injection molding device according to claim 1, characterized in that, The movable mold mechanism (6) further comprises a first driving member (62), a connecting block (63) and a guide bar (64), the movable side molds (61) are two pairs and each pair of the movable side molds (61) are oppositely arranged, one pair of the movable side molds (61) are movably connected with the other pair of the movable side molds (61) through the guide bar (64), the first driving member (62) is installed on the side wall of one pair of the movable side molds (61), and the connecting block (63) is installed on the movable mold (4) and connected with the first driving member (62).

4. The logistics box injection molding device according to claim 3, characterized in that, The movable mold (4) is provided with a plurality of guide rods (42), and each of the movable side molds (61) is provided with at least one first guide hole (611) slidably matched with the guide rods (42).

5. The logistics box injection molding device according to any one of claims 1-4, characterized in that, The fixed mold (2) is provided with a guide column (22), and the movable mold (4) is provided with a second guide hole (43) matched with the guide column (22).

6. The logistics box injection molding device according to claim 5, wherein, Further comprising an ejection mechanism (3) comprising a push plate (31) arranged on the fixed mold (2) and sleeved on the outer periphery of the male mold (21), the ejection mechanism (3) is used for ejecting the formed logistics box body (400).

7. The logistics box injection molding device according to claim 6, wherein, The push plate (31) is provided with a third guide hole (311) matched with the guide column (22).

8. The logistics box injection molding device according to claim 6, wherein, When the fixed mold (2) and the movable mold (4) are closed, the movable side mold (61) and the push plate (31) form a third groove structure (300) in communication with the injection cavity (100), and the molten plastic entering the third groove structure (300) forms a folded edge structure (400b) on the logistics box body (400) after cooling.

9. The logistics box injection molding device according to any one of claims 1-4, wherein, The feeding mechanism (7) at least comprises: a feeding nozzle mounted on the panel (5); a hot runner assembly (71) mounted between the movable mold (4) and the panel (5) and matched with the feeding nozzle and the injection cavity (100) respectively.

10. The logistics box injection molding device according to claim 9, wherein, The hot runner assembly (71) comprises a hot runner plate (711), a flow divider, a needle valve type hot nozzle (712) and a cylinder, the hot runner plate (711) is mounted between the panel (5) and the movable mold (4), the flow divider is mounted on the hot runner plate (711) and communicates with the feeding nozzle, the needle valve type hot nozzle (712) is mounted on the movable mold (4) and communicates with the flow divider, the cylinder is mounted on the panel (5) and matched with the needle valve type hot nozzle (712), and the movable mold (4) is provided with a feeding hole (44) in communication with the injection cavity (100) and matched with the needle valve type hot nozzle (712).

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