Stamping die

Abstract

The utility model relates to the technical field of refrigerator inner container machining, in particular to a stamping die which comprises a base and a lower demolding mechanism. A fixed seat is arranged on the base, a lower die with a cavity inside is arranged on the fixed seat, and an upper die is arranged above the lower die; the lower demolding mechanism comprises a jacking plate arranged in the lower mold, a lifting column arranged on the jacking plate and slidably connected with the lower mold, a second wedge block arranged on the lifting column, a first wedge block arranged in the cavity and a driving assembly for driving the first wedge block to horizontally move, and the first wedge block is slidably connected with the second wedge block; the jacking plate is in sliding connection with the lower die. According to the utility model, the problem that the refrigerator liner is clamped on the upper mold can be avoided, the problem that the refrigerator liner is embedded in the lower mold and is difficult to demold can also be avoided, and the practicability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator inner liner processing, in particular to a stamping die. Background Art

[0002] The refrigerator inner liner is an important component of the refrigerator body. It is located inside the body, used to separate the refrigerating and freezing spaces from the heat insulation layer, and store food through various accessories. Before the refrigerator door inner liner is used, it needs to be manufactured by stamping, so a stamping die is required for production and processing.

[0003] Chinese Patent Publication No. CN210877070U discloses a refrigerator inner liner stamping die, including a base and a top plate. A concave die is fixed on the top of the base. The top plate is located directly above the base. Four support columns are fixed to the bottom of the top plate, and the bottoms of the four support columns are fixedly connected to the top of the base. A hydraulic cylinder is fixed to the bottom of the top plate. A lifting plate is fixed to the bottom of the hydraulic cylinder. A convex die is fixed to the bottom of the lifting plate. The convex die is located directly above the concave die and is matched with the concave die. Installation grooves are formed on both sides of the lifting plate. This stamping die has a reasonable structure, ingenious design, and simple operation. It solves the problem that the inner liner of the refrigerator is stuck on the die during stamping in the prior art and is easy to be popularized and used.

[0004] However, the above technical solution has the following deficiencies: Although the die can peel off the refrigerator inner liner stuck on the convex die after stamping, after stamping, the refrigerator inner liner sometimes gets stuck inside the concave die, generally requiring a long time for demoulding, and the demoulding operation is not convenient. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a stamping die aiming at the problems in the background art, which can not only avoid the problem that the refrigerator inner liner is stuck on the upper die, but also avoid the problem that the refrigerator inner liner is stuck inside the lower die and is not easy to demould, improving the practicability of the equipment.

[0006] The technical solution of the utility model: A stamping die includes a base and a lower demoulding mechanism. A fixed seat is arranged on the base, and a lower die with a cavity inside is arranged on the fixed seat. An upper die is arranged above the lower die. The lower demoulding mechanism includes a lifting plate arranged inside the lower die, a lifting column arranged on the lifting plate and slidably connected with the lower die, a second wedge block arranged on the lifting column, a first wedge block arranged inside the cavity, and a driving component for driving the first wedge block to move horizontally. The first wedge block is slidably connected with the second wedge block, and the lifting plate is slidably connected with the lower die.

[0007] Preferably, the driving assembly includes a motor disposed inside the cavity, a threaded rod drivingly connected to the motor, a connecting rod disposed on the first wedge block, a threaded ring disposed on the connecting rod, two guiding blocks symmetrically distributed on the first wedge block, and two fixing blocks disposed inside the cavity. The threaded rod is threadedly connected to the threaded ring, and the fixing block is provided with a groove for the guiding block to slide horizontally.

[0008] Preferably, two supporting blocks are disposed inside the cavity, and the threaded rod is rotatably connected to the supporting blocks.

[0009] Preferably, a stabilizing assembly is disposed on the second wedge block. The stabilizing assembly includes a stabilizing rod disposed on the second wedge block, a fixing rod disposed on the lower die, and a first spring having two ends respectively disposed on the stabilizing rod and the lower die.

[0010] Preferably, a support frame is disposed on the base, and a lifting mechanism for driving the upper die to close the mold is disposed on the support frame. The lifting mechanism includes a hydraulic cylinder disposed on the support frame and a lifting seat drivingly connected to the hydraulic cylinder. The upper die is disposed on the lifting seat.

[0011] Preferably, two upper demolding mechanisms symmetrically distributed are disposed on the lifting seat. The upper demolding mechanism includes a mounting block disposed on the lifting seat, a sliding rod slidably disposed on the mounting block, a push plate disposed on the sliding rod, and a second spring having two ends respectively disposed on the mounting block and the push plate.

[0012] Preferably, four sliders are annularly and arrayedly distributed on the sliding rod, and four sliding grooves for the sliders to slide vertically are disposed inside the mounting block.

[0013] Preferably, two connecting blocks are disposed on the lifting seat, and two guiding rods vertically distributed are disposed on the support frame. The connecting blocks are slidably disposed on the guiding rods.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. The lower demolding mechanism provided by the utility model can perform a jacking process on the refrigerator inner liner after stamping, so that the refrigerator inner liner is separated from the concave wall of the lower die, facilitating the removal of the inside of the lower die, avoiding the disadvantages that the refrigerator inner liner is stuck inside the lower die, resulting in a long mold removal time and difficult operation, and the stability of the lower demolding mechanism during use is improved by the cooperating stabilizing assembly.

[0016] 2. Through the upper demolding mechanism provided by the utility model, when the upper die is separated from the lower die, the push plate will exert a thrust on the edge part of the upper surface of the refrigerator inner liner, and the refrigerator inner liner can be peeled off from the upper die, avoiding the situation that the refrigerator inner liner follows the upper die to rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the lower die;

[0019] Figure 3 It is a partial structure split schematic diagram of the lower demolding mechanism;

[0020] Figure 4 It is a connection schematic diagram of the upper demolding mechanism.

[0021] Reference numerals: 1, base; 2, fixed seat; 3, lower die; 4, upper die; 5, cavity; 6, lifting plate; 7, first wedge block; 8, second wedge block; 9, lifting column; 10, motor; 11, threaded rod; 12, connecting rod; 13, threaded ring; 14, support block; 15, fixing block; 16, guiding block; 17, stabilizing rod; 18, fixing rod; 19, first spring; 20, support frame; 21, hydraulic cylinder; 22, lifting seat; 23, mounting block; 24, sliding rod; 25, pushing plate; 26, second spring; 27, slider; 28, guiding rod; 29, connecting block. Detailed implementation manners

[0022] Embodiment 1

[0023] As Figures 1-4 shown, a stamping die proposed in this embodiment includes a base 1 and a lower demolding mechanism; a fixed seat 2 is arranged on the base 1, a lower die 3 with a cavity 5 inside is arranged on the fixed seat 2, and an upper die 4 is arranged above the lower die 3.

[0024] As Figure 2 and Figure 3 shown, the lower demolding mechanism includes a lifting plate 6 arranged inside the lower die 3, a lifting column 9 arranged on the lifting plate 6 and slidably connected to the lower die 3, a second wedge block 8 arranged on the lifting column 9, a first wedge block 7 arranged inside the cavity 5, and a driving assembly for driving the first wedge block 7 to move horizontally. The first wedge block 7 is slidably connected to the second wedge block 8, the lifting plate 6 is slidably connected to the lower die 3, two support blocks 14 are arranged inside the cavity 5, the threaded rod 11 is rotatably connected to the support blocks 14, and the support blocks 14 are used to support the threaded rod 11 to ensure the stability when the threaded rod 11 rotates and engages.

[0025] The driving assembly includes a motor 10 arranged inside the cavity 5, a threaded rod 11 drivingly connected to the motor 10, a connecting rod 12 arranged on the first wedge block 7, a threaded ring 13 arranged on the connecting rod 12, two guiding blocks 16 symmetrically distributed on the first wedge block 7, and two fixing blocks 15 arranged inside the cavity 5. The threaded rod 11 is threadedly connected to the threaded ring 13, and a groove for the horizontal sliding of the guiding block 16 is arranged on the fixing block 15.

[0026] In this embodiment, after stamping is completed, the motor 10 is started to drive the threaded rod 11 to rotate. Under the guiding action of the guiding block 16 and the groove on the fixed block 15, the threaded rod 11 is screwed with the threaded ring 13. Then, the threaded ring 13 drives the connecting rod 12 and the first wedge block 7 to move. The first wedge block 7 slides relative to the inclined surface of the second wedge block 8. Then, the second wedge block 8 pushes the lifting column 9 and the jacking plate 6 upward to separate the inner container from the concave wall of the lower die 3, so that the inner container can be taken out from the inside of the lower die 3, avoiding the disadvantages that the inner container is stuck inside the lower die 3, resulting in a long mold-taking time and difficult operation.

[0027] Embodiment Two

[0028] As Figure 2 shown, a stamping die proposed in this embodiment, compared with Embodiment One, in this embodiment, a stabilizing assembly is provided on the second wedge block 8. The stabilizing assembly includes a stabilizing rod 17 provided on the second wedge block 8, a fixed rod 18 provided on the lower die 3, and a first spring 19 with both ends respectively provided on the stabilizing rod 17 and the lower die 3. By providing the stabilizing assembly, it can play a guiding and stabilizing role in the lifting of the second wedge block 8, ensuring that the inclined surfaces of the two wedge blocks do not misalign during relative sliding.

[0029] Embodiment Three

[0030] As Figure 1 shown, a stamping die proposed in this embodiment, compared with Embodiment One, in this embodiment, a support frame 20 is provided on the base 1, and a lifting mechanism for driving the upper die 4 to close the mold is provided on the support frame 20. The lifting mechanism includes a hydraulic cylinder 21 provided on the support frame 20 and a lifting seat 22 drivingly connected to the hydraulic cylinder 21. The upper die 4 is provided on the lifting seat 22.

[0031] Two connecting blocks 29 are provided on the lifting seat 22, and two vertically distributed guiding rods 28 are provided on the support frame 20. The connecting blocks 29 are slidably arranged on the guiding rods 28.

[0032] In this embodiment, when mold closing is required, the hydraulic cylinder 21 is used to drive the lifting seat 22 to descend. The lifting seat 22 drives the upper die 4 to approach the lower die 3 and the inner container until stamping processing is completed. The arrangement of the guiding rods 28 and the connecting blocks 29 can play a guiding role in the descent of the upper die 4, ensuring the processing accuracy during stamping.

[0033] Embodiment Four

[0034] As Figure 1 and 4As shown, a stamping die proposed in this embodiment, compared with the third embodiment, in this embodiment, two symmetrically distributed upper demolding mechanisms are provided on the lifting seat 22. The upper demolding mechanism includes a mounting block 23 provided on the lifting seat 22, a sliding rod 24 slidably provided on the mounting block 23, a push plate 25 provided on the sliding rod 24, and a second spring 26 with two ends respectively provided on the mounting block 23 and the push plate 25. Four sliders 27 are arranged in an annular array on the sliding rod 24, and four vertical sliding grooves for the sliders 27 are provided inside the mounting block 23.

[0035] In this embodiment, when the mold is closed, the push plate 25 contacts and presses against the upper surface of the lower mold 3. As the upper mold 4 descends, the push plate 25 pushes the sliding rod 24 to slide upward and compresses the second spring 26. After the upper mold 4 stops descending, the push plate 25 remains stationary and contacts the upper surface of the inner liner. After the mold closing is completed, the hydraulic cylinder 21 drives the upper mold 4 to rise. When the upper mold 4 rises to a certain height, the second spring 26 elongates, thereby causing the push plate 25 to exert a thrust on the inner liner. When the upper mold 4 is separated from the lower mold 3, the push plate 25 separates the inner liner from the upper mold, avoiding the situation where the inner liner follows the upper mold 4 to rise.

[0036] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. A stamping die, characterized in that: include: A base (1) is provided with a fixing seat (2) on it, a lower mold (3) having a cavity (5) inside is provided on the fixing seat (2), and an upper mold (4) is provided above the lower mold (3); The lower demoulding mechanism comprises a lifting plate (6) arranged inside the lower mold (3), a lifting column (9) arranged on the lifting plate (6) and slidably connected to the lower mold (3), a second wedge block (8) arranged on the lifting column (9), a first wedge block (7) arranged inside the cavity (5), and a driving component for driving the first wedge block (7) to move horizontally, the first wedge block (7) is slidably connected to the second wedge block (8), and the lifting plate (6) is slidably connected to the lower mold (3).

2. A stamping die according to claim 1, characterized in that: The driving assembly comprises a motor (10) arranged inside the cavity (5), a threaded rod (11) drivingly connected to the motor (10), a connecting rod (12) arranged on the first wedge block (7), a threaded ring (13) arranged on the connecting rod (12), two guide blocks (16) symmetrically distributed on the first wedge block (7), and two fixed blocks (15) arranged inside the cavity (5), the threaded rod (11) being threadedly connected to the threaded ring (13), and the fixed block (15) being provided with a groove for the guide block (16) to slide horizontally.

3. A stamping die according to claim 2, characterized in that: Two support blocks (14) are arranged inside the cavity (5), and the threaded rod (11) is rotatably connected to the support blocks (14).

4. A stamping die according to claim 1, characterized in that: A stabilizing assembly is arranged on the second wedge block (8), and the stabilizing assembly comprises a stabilizing rod (17) arranged on the second wedge block (8), a fixing rod (18) arranged on the lower mold (3), and a first spring (19) with two ends respectively arranged on the stabilizing rod (17) and the lower mold (3).

5. A stamping die according to claim 1, characterized in that: A support frame (20) is arranged on the base (1); a lifting mechanism for driving the upper mold (4) to close the mold is arranged on the support frame (20); the lifting mechanism comprises a hydraulic cylinder (21) arranged on the support frame (20) and a lifting seat (22) drivingly connected to the hydraulic cylinder (21); and the upper mold (4) is arranged on the lifting seat (22).

6. A stamping die according to claim 5, characterized in that: The lifting seat (22) is provided with two symmetrically distributed upper demoulding mechanisms, which include a mounting block (23) arranged on the lifting seat (22), a slide bar (24) slidably arranged on the mounting block (23), a push plate (25) arranged on the slide bar (24), and a second spring (26) with two ends respectively arranged on the mounting block (23) and the push plate (25).

7. A stamping die according to claim 6, characterized in that: The slide bar (24) is provided with four slide blocks (27) distributed in a ring array, and the interior of the mounting block (23) is provided with four slide grooves for the slide blocks (27) to slide vertically.

8. A stamping die according to claim 5, characterized in that: Two connecting blocks (29) are arranged on the lifting seat (22), and two vertically distributed guide rods (28) are arranged on the supporting frame (20), and the connecting blocks (29) are slidably arranged on the guide rods (28).

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