Forming die for rear decorating part of washing machine

Abstract

The washing machine rear decorating part forming mold comprises a mold base, an inclined groove is formed in the mounting face of the mold base, and the inclined groove penetrates through the inner wall of the mold base; the mold further comprises a first core pulling mechanism, the first core pulling mechanism comprises a first core pulling block, a first core pulling base and a first oil cylinder, the first core pulling block is arranged in the inclined groove in a sliding mode, the first core pulling base is connected to the end, away from the mold base, of the first core pulling block in a sliding mode, the first oil cylinder is arranged on one side of the mold base, and the output end of the first oil cylinder is arranged on the first core pulling base. The first oil cylinder drives the first core pulling seat to transversely slide away from or close to the first oil cylinder, when the first oil cylinder drives the first core pulling seat to slide away from the first oil cylinder, the first core pulling seat drives the first core pulling block to slide away from the inner wall of the die holder, and core pulling of the chute is completed. The mold is provided with the two core-pulling forming mechanisms, the thickness of the mold is reduced, the injection demolding distance is increased, and mold taking is facilitated.

Description

Technical Field

[0001] This application relates to the field of washing machine mold technology, and in particular to a mold for forming a rear decorative part of a washing machine. Background Technology

[0002] Washing machine molds are key production tools in the home appliance manufacturing industry, specifically designed for the precision molding and efficient mass production of various washing machine components. Their design integrates functionality, durability, and process complexity, covering the injection molding, stamping, or die-casting requirements of core components such as the inner drum, outer drum, door cover, and control panel of the washing machine.

[0003] Washing machine parts often have lateral holes, concave and convex structures, or undercut features, making direct demolding impossible in conventional mold opening directions. Demolding is not easily accomplished through simple mold opening actions, and core-pulling mechanisms are often required to facilitate mold demolding. The mold base has mounting surfaces for mounting plates. The core-pulling mechanism is mainly located on the mounting plate. When the core-pulling mechanism is set perpendicular to the mold base, the mold base is relatively thick. Common injection molding machines are adapted to several sets of molds, and the stroke distance is fixed. When the mold base is thick, it is easy to make the demolding distance too short when installed on the injection molding machine. Utility Model Content

[0004] In order to prevent the mold thickness from becoming too thick after setting the core-pulling mechanism, increase the injection demolding distance, and facilitate mold removal, this application provides a molding die for the rear decorative part of a washing machine.

[0005] This application provides a molding die for a washing machine rear decorative part, which adopts the following technical solution:

[0006] A molding die for a washing machine rear decorative part includes a mold base with an inclined groove on the mounting surface of the mold base penetrating the inner wall of the mold base. It also includes a first core-pulling mechanism, comprising a first core-pulling block, a first core-pulling seat, and a first hydraulic cylinder. The first core-pulling block is slidably disposed within the inclined groove, and the first core-pulling seat is slidably connected to the end of the first core-pulling block away from the mold base. The first hydraulic cylinder is disposed on one side of the mold base, with its output end located on the first core-pulling seat. The first hydraulic cylinder drives the first core-pulling seat to slide laterally away from or near the first hydraulic cylinder. When the first hydraulic cylinder drives the first core-pulling seat to slide away from the first hydraulic cylinder, the first core-pulling seat causes the first core-pulling block to slide away from the inner wall of the mold base, thus completing the core-pulling process in the inclined groove.

[0007] By adopting the above technical solution, when the mold is closed, the first hydraulic cylinder is set on one side of the mold base. The first hydraulic cylinder drives the first core-pulling seat to slide laterally. The first core-pulling seat slides and drives the first core-pulling block to slide in the inclined groove. When the first core-pulling block slides away from the inner wall of the mold base, the mold core pulling is completed. Compared with vertical core pulling, the first hydraulic cylinder drives the first core-pulling seat to slide laterally and completes the inclined core pulling through the inclined groove, which greatly reduces the vertical thickness of the core pulling mechanism. After the core pulling mechanism is set, when the fixing plate is fixed on the mold base mounting surface, the mold thickness is reduced and the injection demolding distance is increased, which facilitates mold removal.

[0008] Optionally, the first core-pulling block has slots on opposite sides away from the mold base, and a sliding block is provided on the first core-pulling base. The sliding block is slidably connected in the slot and slides along the length of the slot. The first core-pulling block has protrusions on opposite sides near one end of the first core-pulling base, and the protrusions are for the sliding block to abut against.

[0009] By adopting the above technical solution, the sliding block is slidably connected in the slot, and the protrusion is used for the sliding block to abut. When the first core-pulling seat slides laterally, the protrusion prevents the sliding block from falling out of the slot. At the same time, when the sliding block abuts the protrusion, the sliding block slides and drives the first core-pulling block to slide to achieve core pulling.

[0010] Optionally, the inclined groove wall is provided with a boss in the circumferential direction, and a limiting block is provided at one end of the first core-pulling seat near the inclined groove. The inner diameter of the limiting block is smaller than the inner diameter of the first core-pulling seat. A limiting platform is formed between the boss and the inclined groove wall. When the first hydraulic cylinder drives the first core-pulling block to slide closer to the inner wall of the mold base, the end of the first core-pulling block located in the inclined groove abuts against the limiting platform.

[0011] By adopting the above technical solution, through the limiting platform formed between the boss and the inclined groove wall, when the first oil cylinder drives the first core-pulling block to slide closer to the inner wall of the mold base, the end of the first core-pulling block located in the inclined groove abuts against the limiting platform, limiting the sliding distance of the first core-pulling block, which facilitates improving the product core-pulling qualification rate.

[0012] Optionally, a second core-pulling mechanism is also included. The second core-pulling mechanism includes a second core-pulling block, a second core-pulling seat, and a second hydraulic cylinder. A side-sloping hole is provided through one side of the mold base. The second core-pulling block is slidably disposed in the side-sloping hole. A slider is provided at the end of the second core-pulling block away from the side-sloping hole. A groove is provided on the second core-pulling seat for the slider to slide. The slider slides along the length of the groove. The second hydraulic cylinder is disposed on one side of the mold base. The output end of the second hydraulic cylinder is disposed on the second core-pulling seat. The second hydraulic cylinder drives the second core-pulling seat to slide laterally away from or closer to the second hydraulic cylinder. When the second hydraulic cylinder drives the second core-pulling seat to slide away from the second hydraulic cylinder, the second core-pulling seat drives the second core-pulling block to slide away from the inner wall of the mold base, and the core-pulling through the side-sloping hole is completed.

[0013] By adopting the above technical solution, the second oil cylinder is set on one side of the mold base. The second oil cylinder drives the second core-pulling seat to slide laterally. The slider slides in the slide groove, so that the second core-pulling block slides in the oblique hole. When the second core-pulling block slides away from the inner wall of the mold base, the oblique hole core-pulling is completed. By adding a set of core-pulling mechanisms, the mold can realize the core-pulling of the oblique hole.

[0014] Optionally, anti-detachment blocks are provided on opposite sides of the end of the slider near the second core-pulling seat. The second core-pulling seat is provided with an anti-detachment groove for the anti-detachment blocks to slide. The anti-detachment groove is connected to the sliding groove. The anti-detachment blocks cause the second core-pulling block to slide and engage with the second core-pulling seat.

[0015] By adopting the above technical solution, the slider is slidably connected to the slide groove, the anti-detachment block prevents the slider from detaching from the second core-pulling seat, and at the same time enables the second core-pulling block to slide when the second core-pulling seat slides.

[0016] Optionally, the second core-pulling block is provided with an abutment block on its side, and the mold base is provided with an abutment groove for the abutment block to slide on its side. The abutment groove is connected to the oblique hole, and the inner diameter of the abutment groove is larger than the inner diameter of the oblique hole. An abutment platform is formed at the connection between the abutment groove and the oblique hole, and the abutment platform is provided for the abutment block to abut.

[0017] By adopting the above technical solution, the sliding distance of the second core-pulling block is limited by the abutment platform formed between the boss and the inclined groove wall, which facilitates the improvement of the product core-pulling qualification rate.

[0018] Optionally, the inner wall of the mold base is provided with protrusions, which abut against the product during molding.

[0019] By adopting the above technical solution, the protrusion enables the side hole to be formed by stamping during the die-making process.

[0020] Optionally, a heat sink assembly is provided at the end of the first core-pulling block near the inclined groove. When the first cylinder drives the first core-pulling block to slide towards the inner wall of the mold base, the heat sink assembly abuts against the product and forms a heat dissipation hole.

[0021] By adopting the above technical solution, heat dissipation holes are formed when the first core-pulling block is pulled by setting up heat sink groups, and complex holes are formed by pulling the core, thus improving molding efficiency.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The first hydraulic cylinder drives the first core-pulling seat to slide laterally, and the first core-pulling block pulls the core at an angle, reducing the vertical thickness of the core-pulling mechanism, reducing the mold thickness, increasing the injection demolding distance, and facilitating mold removal.

[0024] 2. The second core-pulling block is driven by the second hydraulic cylinder to pull the core at an angle, which facilitates the pulling of the core from the oblique hole. By adding a core-pulling mechanism, the mold can achieve the pulling of the core from the oblique hole.

[0025] 3. The heat sink assembly allows the inclined groove to be pulled through the first core-pulling block to form complex holes, which is formed in one step, improving the forming efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a molding die for a washing machine rear decorative part according to an embodiment.

[0027] Figure 2 This is a partial structural schematic diagram of a molding die for a washing machine rear decorative part according to an embodiment.

[0028] Figure 3 This is a partial structural schematic diagram from another perspective of a molding die for a washing machine rear decorative part, as described in an embodiment.

[0029] Figure 4 This is a schematic diagram of the structure of the first core-pulling mechanism in the embodiment.

[0030] Figure 5 yes Figure 1 Cross-sectional view at point AA.

[0031] Figure 6 This is a schematic diagram of the structure of the mold base in the embodiment.

[0032] Figure 7 This is a structural disassembly diagram of the second core-pulling mechanism in the embodiment.

[0033] Explanation of reference numerals in the attached drawings: 1. Mold base; 21. Inclined groove; 22. Slot; 23. Sliding block; 24. Protrusion; 25. Boss; 26. Fixing plate; 3. First core-pulling mechanism; 31. First core-pulling block; 32. First core-pulling seat; 33. First hydraulic cylinder; 41. Limiting block; 42. Limiting platform; 5. Second core-pulling mechanism; 51. Second core-pulling block; 52. Second core-pulling seat; 53. Second hydraulic cylinder; 61. Side inclined hole; 62. Slider; 63. Slide groove; 64. Anti-detachment block; 65. Anti-detachment groove; 71. Abutment block; 72. Abutment groove; 73. Abutment platform; 8. Protrusion; 9. Heat sink assembly. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] This application discloses a molding die for a washing machine rear trim part. (Refer to...) Figure 1 , Figure 3 , Figure 4A molding die for a washing machine rear decorative part includes a mold base 1, with a protrusion 8 fixed on the inner wall of the mold base 1. During molding, the protrusion 8 abuts against the product. A fixing plate 26 is fixed on the mounting surface of the mold base.

[0036] Reference Figure 2 , Figure 4 , Figure 5 A groove 21 is provided on the mounting surface of the mold base 1, and the groove 21 penetrates the inner wall of the mold base 1. A molding die for a washing machine rear decorative part also includes a first core-pulling mechanism 3, which includes a first core-pulling block 31 and a first core-pulling seat 32. The first core-pulling block 31 is slidably connected within the groove 21, and the first core-pulling seat 32 is slidably connected to the end of the first core-pulling block 31 away from the mold base 1. Slots 22 are provided on opposite sides of the first core-pulling block 31 away from the mold base 1. A sliding block 23 is fixed on the first core-pulling seat 32, and the sliding block 23 is slidably connected within the slots 22, sliding along the length of the slots 22. Protrusions 24 are fixed on opposite sides of the first core-pulling block 31 near the end of the first core-pulling seat 32, and the protrusions 24 are for the sliding block 23 to abut against.

[0037] Reference Figure 4 , Figure 5 , Figure 6 The inclined groove 21 has a boss 25 fixed circumferentially on its wall. A limiting block 41 is fixed to one end of the first core-pulling seat 32 near the inclined groove 21. The inner diameter of the limiting block 41 is smaller than the inner diameter of the first core-pulling seat 32. A limiting platform 42 is formed between the boss 25 and the wall of the inclined groove 21. The first core-pulling mechanism 3 also includes a first hydraulic cylinder 33, which is fixed to one side of the mold base 1. The output end of the first hydraulic cylinder 33 is fixed to the first core-pulling seat 32. The first hydraulic cylinder 33 drives the first core-pulling seat 32 to slide laterally away from or near the first hydraulic cylinder 33. When the first hydraulic cylinder 33 drives the first core-pulling seat 32 to slide away from the first hydraulic cylinder 33, the first core-pulling seat 32 drives the first core-pulling block 31 to slide away from the inner wall of the mold base 1, thus completing the core-pulling operation of the inclined groove 21. The end of the first core-pulling block 31 near the inclined groove 21 is fixed with a heat sink assembly 9. When the first hydraulic cylinder 33 drives the first core-pulling block 31 to slide closer to the inner wall of the mold base 1, the end of the first core-pulling block 31 located in the inclined groove 21 abuts against the limiting platform 42, and the heat sink assembly 9 abuts against the product and forms heat dissipation. The second core-pulling mechanism 3 is fixed in the fixed plate 26.

[0038] Reference Figure 2 , Figure 5 , Figure 7A molding die for a washing machine rear decorative part also includes a second core-pulling mechanism 5, which includes a second core-pulling block 51 and a second core-pulling seat 52. A side-sloping hole 61 is provided through one side of the mold base 1. The second core-pulling block 51 is slidably connected within the side-sloping hole 61. A slider 62 is fixed to the end of the second core-pulling block 51 away from the side-sloping hole 61. A groove 63 is provided on the second core-pulling seat 52 for the slider 62 to slide along the length of the groove 63. Anti-detachment blocks 64 are fixed to opposite sides of the end of the slider 62 near the second core-pulling seat 52. An anti-detachment groove 65 is provided on the second core-pulling seat 52 for the anti-detachment blocks 64 to slide, and the anti-detachment groove 65 connects to the groove 63. The anti-detachment blocks 64 allow the second core-pulling block 51 to slide and engage with the second core-pulling seat 52.

[0039] Reference Figure 5 , Figure 6 , Figure 7 The second core-pulling block 51 has an abutment block 71 fixed to its side. The mold base 1 has an abutment groove 72 on its side for the abutment block 71 to slide. The abutment groove 72 connects to the oblique hole 61, and the inner diameter of the abutment groove 72 is larger than the inner diameter of the oblique hole 61. An abutment platform 73 is formed at the connection between the abutment groove 72 and the oblique hole 61, for the abutment block 71 to abut against. The second core-pulling mechanism 5 also includes a second hydraulic cylinder 53, which is fixed to one side of the mold base 1. The output end of the second hydraulic cylinder 53 is fixed to the second core-pulling seat 52. The second hydraulic cylinder 53 drives the second core-pulling seat 52 to slide laterally away from or near the second hydraulic cylinder 53. When the second hydraulic cylinder 53 drives the second core-pulling seat 52 to slide away from the second hydraulic cylinder 53, the second core-pulling seat 52 drives the second core-pulling block 51 to slide away from the inner wall of the mold base 1, and the abutment block 71 abuts against the abutment platform 73, completing the core-pulling of the oblique hole 61. The second core-pulling mechanism 5 is fixed inside the fixed plate 26.

[0040] The implementation principle of a washing machine rear decorative part molding die according to an embodiment of this application is as follows: When the die needs to be closed and core pulling is required, the first hydraulic cylinder 33 drives the first core pulling seat 32 to slide laterally, and the sliding block 23 on the first core pulling seat 32 slides and abuts against the protrusion 24, thereby driving the first core pulling block 31 to slide in the inclined groove 21. When the first core pulling block 31 slides away from the inner wall of the die base 1, the core pulling of the mold heat dissipation hole is completed; the second hydraulic cylinder 53 drives the second core pulling seat 52 to slide, and the slider 62 slides along the length direction of the sliding groove 63, so that the second core pulling seat 52 drives the second The core-pulling block 51 slides within the oblique hole 61. When the second core-pulling block 51 slides away from the inner wall of the mold base 1, the core-pulling of the oblique hole 61 is completed. Compared to vertical core-pulling, the first cylinder 33 drives the first core-pulling seat 32 to slide laterally, and the second cylinder 53 drives the second core-pulling seat 52 to slide laterally, which greatly reduces the vertical thickness of the core-pulling mechanism. After the core-pulling mechanism is set, when the fixing plate 26 is fixed on the mounting surface of the mold base 1, the mold has two core-pulling mechanisms, which can simultaneously complete the core-pulling molding operation at two locations of the product. The mold thickness is reduced, the injection molding demolding distance is increased, and it is convenient to remove the mold.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laundry machine rear trim forming die comprising a die seat (1), characterized in that: The mounting surface of the mold base (1) is provided with an inclined groove (21), which penetrates the inner wall of the mold base (1); it also includes a first core-pulling mechanism (3), which includes a first core-pulling block (31), a first core-pulling seat (32), and a first hydraulic cylinder (33). The first core-pulling block (31) is slidably disposed in the inclined groove (21), and the first core-pulling seat (32) is slidably connected to the end of the first core-pulling block (31) away from the mold base (1). The first hydraulic cylinder (33) 3) Set on one side of the mold base (1), the output end of the first oil cylinder (33) is set on the first core-pulling seat (32). The first oil cylinder (33) drives the first core-pulling seat (32) to slide laterally away from or close to the first oil cylinder (33). When the first oil cylinder (33) drives the first core-pulling seat (32) to slide away from the first oil cylinder (33), the first core-pulling seat (32) drives the first core-pulling block (31) to slide away from the inner wall of the mold base (1), and the core-pulling of the inclined groove (21) is completed.

2. The laundry machine rear trim forming mold of claim 1, wherein: The first core-pulling block (31) has slots (22) on opposite sides away from the mold base (1). The first core-pulling base (32) is provided with sliding blocks (23). The sliding blocks (23) are slidably connected in the slots (22). The sliding blocks (23) slide along the length of the slots (22). The first core-pulling block (31) has protrusions (24) on opposite sides near the end of the first core-pulling base (32). The protrusions (24) are for the sliding blocks (23) to abut against.

3. The laundry machine rear trim forming mold of claim 1, wherein: The inclined groove (21) has a boss (25) circumferentially arranged on the groove wall. The first core-pulling seat (32) is provided with a limiting block (41) at one end near the inclined groove (21). The inner diameter of the limiting block (41) is smaller than the inner diameter of the first core-pulling seat (32). A limiting platform (42) is formed between the boss (25) and the groove wall of the inclined groove (21). When the first oil cylinder (33) drives the first core-pulling block (31) to slide closer to the inner wall of the mold base (1), the end of the first core-pulling block (31) located in the inclined groove (21) abuts against the limiting platform (42).

4. The laundry machine rear trim forming mold of claim 1, wherein: It also includes a second core-pulling mechanism (5), which includes a second core-pulling block (51), a second core-pulling seat (52), and a second oil cylinder (53). A side oblique hole (61) is provided through one side of the mold base (1). The second core-pulling block (51) is slidably disposed in the side oblique hole (61). A slider (62) is provided at the end of the second core-pulling block (51) away from the side oblique hole (61). A slide groove (63) is provided on the second core-pulling seat (52) for the slider (62) to slide. The slider (62) moves along the slide groove (63). The second cylinder (53) is located on one side of the mold base (1) and the output end of the second cylinder (53) is located on the second core-pulling seat (52). The second cylinder (53) drives the second core-pulling seat (52) to slide laterally away from or near the second cylinder (53). When the second cylinder (53) drives the second core-pulling seat (52) to slide away from the second cylinder (53), the second core-pulling seat (52) drives the second core-pulling block (51) to slide away from the inner wall of the mold base (1), and the core-pulling of the oblique hole (61) is completed.

5. The laundry machine rear trim forming mold of claim 4, wherein: Anti-detachment blocks (64) are provided on opposite sides of the slider (62) near the end of the second core-pulling seat (52). The second core-pulling seat (52) has an anti-detachment groove (65) for the anti-detachment block (64) to slide. The anti-detachment groove (65) is connected to the slide groove (63). The anti-detachment block (64) causes the second core-pulling block (51) to slide and be engaged with the second core-pulling seat (52).

6. The laundry machine rear trim forming mold of claim 4, wherein: The second core-pulling block (51) has an abutment block (71) on its side. The mold base (1) has an abutment groove (72) on its side for the abutment block (71) to slide. The abutment groove (72) is connected to the oblique hole (61). The inner diameter of the abutment groove (72) is larger than the inner diameter of the oblique hole (61). An abutment platform (73) is formed at the connection between the abutment groove (72) and the oblique hole (61). The abutment platform (73) is used for the abutment block (71) to abut.

7. The laundry machine rear trim forming mold of claim 1, wherein: The inner wall of the mold base (1) is provided with protrusions (8), which abut against the product during molding.

8. The laundry machine rear trim forming mold of claim 1, wherein: The first core-pulling block (31) is provided with a heat sink assembly (9) at the end near the inclined groove (21). When the first oil cylinder (33) drives the first core-pulling block (31) to slide towards the inner wall of the mold base (1), the heat sink assembly (9) abuts against the product and forms a heat dissipation hole.

Images