Mold opening linkage inclined core-pulling forming mold

Abstract

The utility model relates to a mold opening linkage inclined core-pulling forming mold. The mold comprises a lower forming plate, a lower forming block embedded in the lower forming plate, a side forming block movably arranged on one side of the lower forming block, an upper forming plate arranged above the lower forming plate in a lifting mode, an upper forming block embedded in the upper forming plate and a cavity formed in the bottom of the upper forming block. The oblique pin is fixed on one side of the upper forming block and is matched with the side forming block; the forming needle penetrates through the upper forming block; the air closing needle penetrates through the forming needle; according to the mold opening linkage inclined core-pulling forming mold disclosed by the utility model, the movement of the lateral core-pulling mechanism is fused into the mold closing and opening processes of the mold, and the mold opening of a product can be completed by only one step, so that the processing period of the product is shortened, the injection molding efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to an opening mold linkage inclined core-pulling forming mold. Background Art

[0002] A mold is various molds and tools used in industrial production to obtain required products by methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, etc. In short, a mold is a tool for making formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the article shape by changing the physical state of the formed material. It has the title of "the mother of industry".

[0003] Among them, injection molding, also known as injection molding, is a molding method that combines injection and molding. At a certain temperature, the plastic material is completely melted by screw stirring and injected into the mold cavity under high pressure. After cooling and solidification, the formed product is obtained. This method is suitable for mass production of parts with complex shapes and is one of the important processing methods.

[0004] During the production Figure 1 of the shown product, since the side wall of the product is provided with a groove structure, an ordinary up-down opening mold cannot meet the processing and production requirements. Therefore, a lateral core-pulling mechanism that slides horizontally needs to be added between the upper and lower templates.

[0005] When the existing mold is opened, it needs to be carried out in two steps: in the first step, the lateral core-pulling mechanism is driven by an external driving cylinder to open outward; in the second step, the upper and lower templates are opened, and then the ejector rod ejects the product. The existing mold adds the step of lateral core-pulling during ejection, prolonging the processing cycle of the product and correspondingly increasing the production cost. Content of the Utility Model

[0006] The utility model provides an opening mold linkage inclined core-pulling forming mold, which solves the defect that the existing mold adds the step of lateral core-pulling during ejection and prolongs the processing cycle of the product.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: an opening mold linkage inclined core-pulling forming mold, which includes:

[0008] A lower forming plate, a lower forming block embedded in the lower forming plate, a side forming block movably arranged on one side of the lower forming block, an upper forming plate liftably arranged above the lower forming plate, an upper forming block embedded in the upper forming plate, a cavity opened at the bottom of the upper forming block, an inclined pin fixed on one side of the upper forming block and cooperating with the side forming block, a forming needle penetrating through the upper forming block, and a gas-sealing needle penetrating through the forming needle;

[0009] After the upper forming plate and the lower forming plate are closed, the inclined pin pushes the side forming block to move inwards;

[0010] After the upper forming plate and the lower forming plate are opened, the inclined pin pushes the side forming block to move outwards.

[0011] Optimally, it further includes a feeding column embedded in the upper forming plate, a feeding port opened at the top of the feeding column, and a feeding channel penetrating through the feeding column and communicating with the feeding port, and the diameter of the feeding channel gradually expands from top to bottom.

[0012] Optimally, it further includes a main runner opened at the top of the lower forming plate, a first cold slug well opened at the bottom of the main runner, second cold slug wells arranged at both ends of the main runner, and sub-runners integrally connected to both sides of the main runner. After the upper forming plate and the lower forming plate are closed, the main runner communicates with the feeding channel.

[0013] Optimally, it further includes a transition channel opened at the top of the lower forming block and connected to the sub-runner, a third cold slug well arranged at the end of the transition channel far from the sub-runner, a perfusion channel connected to one side of the transition channel, a fourth cold slug well opened at the bottom of the perfusion channel, and a forming channel obliquely opened at the end of the perfusion channel far from the transition channel. After the upper forming plate and the lower forming plate are closed, the forming channel communicates with the cavity.

[0014] Optimally, it further includes a thimble plate elastically arranged at the bottom of the lower forming plate, ejector rods fixed to the top of the thimble plate, a main ejector column fixed to the top of the thimble plate and penetrating through the first cold slug well, and a sub-ejector column fixed to the top of the thimble plate and penetrating through the fourth cold slug well.

[0015] Optimally, it further includes a slot penetrating through the lower forming plate, an insert block fixed to the bottom of the upper forming plate, a limiting block integrally connected to the top of the lower forming block, and a limiting groove opened at the bottom of the upper forming block;

[0016] After the upper forming plate and the lower forming plate are closed, the insert block is inserted into the slot, and the limiting block is inserted into the limiting groove.

[0017] Optimally, the side forming block includes a side core, a side forming portion integrally connected to the inner side of the side core, a spring groove opened in the inner side of the side core, a spring arranged in the spring groove, and an inclined groove obliquely opened on the outer side of the side core. After the upper forming plate and the lower forming plate are closed, the inclined pin is inserted into the inclined groove.

[0018] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0019] The mold for forming with combined die opening and inclined core pulling of the utility model forms the side groove structure of the product by setting an inclined pin and a side forming block that cooperate with each other. When the mold is closed for forming, the inclined pin pushes the side forming block to move inward. When the mold is opened, the inclined pin pushes the side forming block to move outward, avoiding interference with the movement of the product during ejection. The movement of the side core pulling mechanism is integrated into the mold closing and opening processes of the mold. The mold opening of the product can be completed in only one step, shortening the processing cycle of the product, improving the injection efficiency, and saving costs. Description of the Drawings

[0020] Figure 1 It is a schematic structural view of the formed product;

[0021] Figure 2 It is a schematic structural view of the utility model after mold closing;

[0022] Figure 3 It is a schematic structural view of the utility model after mold opening;

[0023] Figure 4 It is a front view of the lower half part of the utility model;

[0024] Figure 5 It is a schematic structural view of the lower half part of the utility model;

[0025] Figure 6 It is a schematic structural view of the upper half part of the utility model;

[0026] Figure 7 It is a schematic structural view of the upper half part of the utility model from another angle;

[0027] Figure 8 For the utility model Figure 5 Partial schematic structural view;

[0028] Figure 9 It is a schematic structural view of the lower forming plate of the utility model;

[0029] Figure 10 It is a schematic structural view of the lower forming block of the utility model;

[0030] Figure 11 It is a position relationship diagram of the side forming block and the inclined pin of the utility model;

[0031] Figure 12 For the utility model Figure 6 Cross-sectional view;

[0032] Figure 13 It is a schematic structural view of the upper limit post of the utility model;

[0033] Figure 14 It is a cross-sectional view of the feeding post of the utility model;

[0034] Description of the reference numerals in the drawings:

[0035] 1. Bottom plate; 2. Lower template; 3. Lower support plate; 4. Lower forming plate; 5. Upper template; 6. Upper support plate; 7. Upper forming plate; 8. Lower clamping block; 9. Lower clamping groove; 10. Lower clamping post; 11. Guide sleeve; 12. Guide post; 13. Upper limit post; 14. Lower limit post; 15. Ejector plate; 16. Ejector rod; 17. Main ejector post; 18. Sub-ejector post; 19. Upper clamping block; 20. Upper clamping groove; 21. Upper clamping post; 22. Embedded groove; 23. Slide groove; 24. Lower forming block; 25. Main runner; 26. First cold slug well; 27. Second cold slug well; 28. Sub-runner; 29. Transition runner; 30. Third cold slug well; 31. Pouring runner; 32. Fourth cold slug well; 33. Forming runner; 34. Limit block; 35. Side forming block; 351. Side core; 352. Side forming part; 353. Spring groove; 354. Inclined groove; 355. Insert block; 36. Insert slot; 37. Upper forming block; 38. Limit groove; 39. Cavity; 40. Angled pin; 41. Groove; 42. Movable plate; 43. Forming needle; 44. Gas shut-off needle; 45. Feeding post; 46. Feeding port; 47. Feeding runner. Detailed implementation mode

[0036] The following further describes the present utility model in combination with the embodiments shown in the drawings.

[0037] As Figure 2 shown, it is a schematic structural diagram of the forming mold of the present utility model after mold clamping. As Figure 3 shown, it is a schematic structural diagram of the forming mold after mold opening, used for injection molding Figure 1 shown products.

[0038] The bottom plate 1 is fixed on the injection molding machine table by means of screw fastening. The bottom plate 1 mainly plays a supporting role. The lower template 2 is fixed on the top of the bottom plate 1. The bottom plate 1 is used to fixedly support the lower template 2, and the lower template 2 is used to fixedly support the lower support plate 3.

[0039] Two sets of relatively arranged lower clamping blocks 8 are fixed on the top of the lower template 2 (that is, there are a total of four lower clamping blocks 8, and two relatively arranged lower clamping blocks 8 are a set). The lower clamping groove 9 is opened on the top of the lower clamping block 8. The lower clamping groove 9 is used to limit the lower clamping post 10, facilitating the staff to assemble the mold.

[0040] The lower support plate 3 is fixed on the top of the lower template 2. The lower clamping post 10 passes through the lower support plate 3 and is inserted into the lower clamping groove 9. The lower clamping post 10 has the same shape as the upper clamping post 21. As Figure 13As shown, the side wall of the lower clamping post 10 is provided with a vertical cut surface, that is, the cross-section of the lower clamping post 10 is not circular but a rounded rectangle. After the lower clamping post 10 is inserted into the lower clamping groove 9, the cut surfaces on both sides of the lower clamping post 10 abut against the inner side walls of the lower clamping groove 9, thereby completing the limit of the lower support plate 3 and playing a role in preventing mistakes during the assembly of the mold, avoiding the operator from installing the lower support plate 3 in the wrong direction (the lower clamping post 10 and the lower clamping groove 9 are connected by interference fit).

[0041] The guide sleeves 11 are embedded in the lower template 2 and located at the four corners of the lower template 2. The guide sleeves 11 cooperate with the guide posts 12 at the bottom of the upper template 5. During the mold closing process, the guide posts 12 move downward and are inserted into the guide sleeves 11. Relying on the cooperation between the guide posts 12 and the guide sleeves 11, the accurate mold closing position of the upper template 5 and the lower template 2 is ensured, improving the quality of the product after injection molding.

[0042] The lower limit posts 14 are fixed to the top of the lower template 2 and located inside the guide sleeves 11, and the upper limit posts 13 are fixed to the bottom of the upper template 5 and cooperate with the lower limit posts 14. After the upper template 5 descends and closes with the lower template 2, the upper limit posts 13 descend and abut against the top of the lower limit posts 14. The downward movement of the upper limit posts 13 is limited by the lower limit posts 14, avoiding excessive downward pressure of the upper template 5 and damaging the lower template 2; at the same time, it can also share part of the weight of the upper template 5 for the lower template 2.

[0043] The upper template 5 is connected to an external driving mechanism (such as a lifting cylinder). The upper support plate 6 is fixed to the bottom of the upper template 5, and the upper forming plate 7 is elastically arranged at the bottom of the upper support plate 6. The upper template 5 is driven by an external driving mechanism to rise and fall, thereby driving the upper forming plate 7 at the bottom to rise and fall to complete the mold opening and closing of the mold.

[0044] As Figure 6 shown, there are two groups of upper clamping blocks 19, which are relatively fixed to the bottom of the upper template 5. The upper clamping grooves 20 are opened at the bottom of the upper clamping blocks 19. The upper clamping posts 21 pass through the upper support plate 6 and are inserted into the upper clamping grooves 20. Since the outer side wall of the upper clamping post 21 is vertically provided with a cut surface, after the upper clamping post 21 is inserted into the upper clamping groove 20, the cut surfaces on both sides of the upper clamping post 21 abut against the inner side walls of the upper clamping groove 20, thereby completing the limit of the upper support plate 6 and playing a role in preventing mistakes during the assembly of the mold, avoiding the operator from installing the upper support plate 6 in the wrong direction (the upper clamping post 21 and the upper clamping groove 20 are connected by interference fit).

[0045] The lower forming plate 4 is fixed to the top of the lower support plate 3. After mold closing, the upper forming plate 7 and the lower forming plate 4 are attached to complete mold closing. The slot 36 penetrates the lower forming plate 4, and the insert block 355 is fixed to the bottom of the upper forming plate 7 and cooperates with the slot 36. After mold closing, the insert block 355 is inserted into the slot 36 to ensure the accurate mold closing position of the upper forming plate 7 and the lower forming plate 4.

[0046] The groove 22 is formed at the top of the lower molding plate 4. The lower molding block 24 is embedded in the groove 22. The upper molding block 37 is embedded at the bottom of the upper molding plate 7 and cooperates with the lower molding block 24. A cavity 39 is formed at the bottom of the upper molding block 37 for molding the product. The chute 23 is formed at the top of the lower molding plate 4 and is located outside the groove 22. The side molding block 35 is arranged in the chute 23. When the upper molding plate 7 descends to close the mold with the lower molding plate 4, the angled pin 40 on one side of the upper molding plate 7 drives the side molding block 35 to move inward to form the side structure of the product. When the mold is opened, the angled pin 40 drives the side molding block 35 to open outward, facilitating the ejector rod 16 to eject the product.

[0047] As Figure 5 、 9 shown, the main runner 25 is formed at the top of the lower molding plate 4. The first cold slug well 26 is formed at the bottom of the main runner 25. The second cold slug wells 27 are arranged at both ends of the main runner 25. The sub-runners 28 are connected to both sides of the main runner 25. The externally melted material flows through the feed column 45 to the main runner 25 and then is split to the sub-runners 28 on both sides.

[0048] As Figure 8 、 10 shown, the transition runner 29 is formed at the top of the lower molding block 24 and is connected to the sub-runner 28. The third cold slug well 30 is arranged at one end of the transition runner 29 away from the sub-runner 28. The pouring runner 31 is formed at the top of the lower molding block 24 and is connected to the transition runner 29. The fourth cold slug well 32 is formed at the bottom of the pouring runner 31. The molding runner 33 is inclinedly formed on one side of the pouring runner 31 away from the transition runner 29. After the upper molding plate 7 and the lower molding plate 4 are closed, the molding runner 33 is connected to the cavity 39, and then the melted material is introduced into the cavity 39. Due to the inclined arrangement of the molding runner 33, when molding inside the cavity 39, the material is poured from bottom to top, which can ensure that the material is filled more fully.

[0049] The functions of the first cold slug well 26, the second cold slug wells 27, the third cold slug well 30, and the fourth cold slug well 32 are the same. Their main functions are to store the small part of the relatively cold plastic material that enters the mold first and to collect the cold slugs generated during the plastic injection molding process. These cold slugs are usually formed due to the temperature reduction of the plastic at the front end of entering the mold. If there is no suitable cold slug well to receive this part of the material, it may enter the main body of the product and cause defects. In addition, the cold slug well is also used to prevent the cold slug from entering the cavity 39 and affecting the quality of the plastic part, and to enable the molten material to smoothly fill the cavity 39.

[0050] As Figure 11As shown in the figure, the side forming block 35 includes a side core 351, a side forming portion 352, a spring groove 353, and an inclined groove 354. The side core 351 is arranged in the sliding groove 23. The side forming portion 352 is integrally connected to the inner side of the side core 351 and is used for forming the side structure of the product during mold closing. The spring groove 353 is opened on the inner side wall of the side core 351. A spring is arranged in the spring groove 353 and abuts between the side core 351 and the lower forming block 24. By arranging the spring, the retraction of the side core 351 is assisted.

[0051] The inclined groove 354 is inclined and opened on the outer side of the side core 351 and is matched with the inclined pin 40. When the upper forming plate 7 descends to close the mold with the lower forming plate 4, the inclined pin 40 on one side of the upper forming plate 7 drives the side forming block 35 to move inward to form the side structure of the product. When the mold is opened, the inclined pin 40 drives the side forming block 35 to open outward, facilitating the ejector rod 16 to eject the product.

[0052] As Figure 4 shown, the ejector plate 15 is elastically arranged below the lower support plate 3. The bottom of the ejector plate 15 is connected to the lifting cylinder. The lifting cylinder drives the ejector plate 15 to rise, and the ejector rod 16 at the top of the ejector plate 15 ejects the formed product. The main ejector post 17 is fixed at the top of the ejector plate 15 and penetrates through the first cold slug well 26. During ejection, it assists the ejector rod 16 to lift the formed product and can also prevent the molten material from leaking through the first cold slug well 26. The auxiliary ejector post 18 is fixed at the top of the ejector plate 15 and penetrates through the fourth cold slug well 32. The function of the auxiliary ejector post 18 is the same as that of the main ejector post 17.

[0053] As Figure 5 、 7 shown, the limit blocks 34 are integrally connected to the top of the lower forming block 24 and are located at the four corners of the lower forming block 24. The limit grooves 38 are opened at the bottom of the upper forming block 37 and are matched with the limit blocks 34. After the upper forming plate 7 and the lower forming plate 4 are closed, the limit blocks 34 are inserted into the limit grooves 38, thereby ensuring the accurate mold closing position of the upper forming block 37 and the lower forming block 24 and improving the forming quality of the product.

[0054] The feeding column 45 is fixed in the upper support plate 6 and penetrates through the upper forming plate 7. The externally melted material flows through the feeding column 45 to the main runner 25. As Figure 14 shown, the feeding port 46 is opened at the top of the feeding column 45. The feeding port 46 is in a bowl shape, which can prevent the material from spilling out during the pouring of the molten material, resulting in material waste or scalding the surrounding staff.

[0055] The feeding runner 47 vertically penetrates through the feeding column 45 and is connected to the feeding port 46. The diameter of the feeding runner 47 gradually expands from top to bottom, facilitating the material to quickly flow to the main runner 25, shortening the forming time, and preventing the material from cooling on the way and blocking the runner or affecting the forming effect.

[0056] As Figure 12 shown, the upper forming plate 7 is elastically arranged at the bottom of the upper support plate 6 (the upper forming plate 7 is connected to the bottom of the upper support plate 6 through a spring, and the spring between the two is a commercially available conventional compression spring, which is not shown in the figure).

[0057] The groove 41 is opened at the bottom of the upper support plate 6. The groove 41 is used to accommodate the movable plate 42. The movable plate 42 is elastically arranged at the top of the upper forming plate 7 and is located within the groove 41 (the movable plate 42 is connected to the top of the upper forming plate 7 through a spring, and the spring between the two is a commercially available conventional compression spring, which is not shown in the figure).

[0058] The forming needle 43 is fixed at the bottom of the movable plate 42 and penetrates through the upper forming block 37. The airtight needle 44 is fixed within the upper support plate 6 and penetrates through the forming needle 43. When forming a product, the upper template 5 moves downward. At this time, the upper support plate 6 and the upper forming plate 7 descend until the upper forming plate 7 fits with the lower forming plate 4 (the spring between the upper support plate 6 and the upper forming plate 7 is compressed, the spring between the movable plate 42 and the upper forming plate 7 is compressed, and the movable plate 42 is placed within the groove 41), and then the notch structure at the top of the product is formed through the forming needle 43 and the airtight needle 44.

[0059] During mold opening, the reset of the spring assists in the reset of the forming needle 43 and the airtight needle 44. By arranging the forming needle 43 and the airtight needle 44, the contact area between the rubber material and the forming needle 43 and the airtight needle 44 respectively is reduced, facilitating mold opening.

[0060] The forming principle of the mold for combined opening and inclined core-pulling forming of the present utility model is as follows:

[0061] Driven by an external driving mechanism, the upper template 5 descends. At this time, the upper support plate 6 and the upper forming plate 7 descend until the upper forming plate 7 fits with the lower forming plate 4 (the spring between the upper support plate 6 and the upper forming plate 7 is compressed, the spring between the movable plate 42 and the upper forming plate 7 is compressed, and the movable plate 42 is placed within the groove 41). The forming needle 43 and the airtight needle 44 descend and are inserted at the top of the cavity 39 for forming the notch structure at the top of the product; the angled pin 40 on one side of the upper forming plate 7 drives the side forming block 35 to move inward to form the side structure of the product;

[0062] After the product is formed, the external driving mechanism drives the upper template 5 to rise for mold opening. The angled pin 40 on one side of the upper forming plate 7 drives the side forming block 35 to move outward, the ejector plate 15 rises, and the formed product is ejected by the ejector rod 16.

[0063] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A mold opening linkage oblique core pulling forming mold, characterized in that: It includes: A lower molding plate (4), a lower molding block (24) embedded in the lower molding plate (4), a side molding block (35) movably arranged on one side of the lower molding block (24), an upper molding plate (7) movably arranged above the lower molding plate (4), an upper molding block (37) embedded in the upper molding plate (7), a molding cavity (39) provided at the bottom of the upper molding block (37), an inclined pin (40) fixed on one side of the upper molding block (37) and matched with the side molding block (35), a molding needle (43) penetrating the upper molding block (37), and an air-blocking needle (44) penetrating the molding needle (43); When the upper molding plate (7) and the lower molding plate (4) are molded together, the oblique pin (40) pushes the side molding block (35) to move inward; After the upper molding plate (7) and the lower molding plate (4) are molded, the oblique pins (40) push the side molding blocks (35) to move outward.

2. The mold opening linkage oblique core pulling forming mold according to claim 1, characterized in that: It also includes a feed column (45) embedded in the upper forming plate (7), a feed port (46) opened at the top of the feed column (45), and a feed channel (47) penetrating the feed column (45) and connected to the feed port (46), wherein the feed channel (47) gradually expands in diameter from top to bottom.

3. The mold opening linkage oblique core pulling forming mold according to claim 2, characterized in that: It also includes a main flow channel (25) opened at the top of the lower molding plate (4), a first cold material well (26) opened at the bottom of the main flow channel (25), a second cold material well (27) arranged at both ends of the main flow channel (25), and a secondary flow channel (28) integrally connected to both sides of the main flow channel (25). When the upper molding plate (7) and the lower molding plate (4) are molded together, the main flow channel (25) is connected to the feed flow channel (47).

4. The mold opening linkage oblique core pulling forming mold according to claim 3, characterized in that: It also includes a transition channel (29) opened at the top of the lower molding block (24) and connected to the secondary channel (28), a third cold material well (30) arranged at the end of the transition channel (29) away from the secondary channel (28), an injection channel (31) connected to one side of the transition channel (29), a fourth cold material well (32) opened at the bottom of the injection channel (31) and a molding channel (33) obliquely opened at the end of the injection channel (31) away from the transition channel (29). When the upper molding plate (7) and the lower molding plate (4) are molded together, the molding channel (33) is connected to the mold cavity (39).

5. The mold opening linkage oblique core pulling forming mold according to claim 4, characterized in that: It also includes an ejector plate (15) elastically arranged at the bottom of the lower forming plate (4), an ejector rod (16) fixed at the top of the ejector plate (15), a main ejector column (17) fixed at the top of the ejector plate (15) and passing through a first cold material well (26), and an auxiliary ejector column (18) fixed at the top of the ejector plate (15) and passing through a fourth cold material well (32).

6. The mold opening linkage oblique core pulling forming mold according to claim 1, characterized in that: It also includes a slot (36) penetrating the lower molding plate (4), an insert block (355) fixed to the bottom of the upper molding plate (7), a limit block (34) integrally connected to the top of the lower molding block (24), and a limit groove (38) provided at the bottom of the upper molding block (37); When the upper molding plate (7) and the lower molding plate (4) are molded together, the insert block (355) is inserted into the slot (36), and the limit block (34) is inserted into the limit groove (38).

7. The mold opening linkage oblique core pulling forming mold according to claim 1, characterized in that: The side molding block (35) comprises a side core (351), a side molding portion (352) integrally connected to the inner side of the side core (351), a spring groove (353) provided on the inner side of the side core (351), a spring arranged in the spring groove (353), and an inclined groove (354) obliquely provided on the outer side of the side core (351); when the upper molding plate (7) and the lower molding plate (4) are molded together, the inclined pin (40) is inserted into the inclined groove (354).

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