Punching and trimming die for refrigerator door lining

Abstract

The invention discloses a refrigerator door lining punching and trimming die which comprises an upper die base and a lower die base, the upper die base is provided with a trimming mechanism and a punching mechanism, the trimming mechanism comprises a rectangular cutter arranged in a surrounding mode, the punching mechanism comprises a punch capable of being movably arranged in the horizontal direction, and the lower die base and the upper die base are oppositely arranged. A die frame capable of containing and positioning a lining plate to be machined is arranged on the side, facing the upper die base, of the lower die base, the die frame is provided with a female die and a rectangular surrounding plate matched with the cutter in shape, a punched hole matched with the punch is formed in the female die, and during die assembly, the cutting edge of the cutter is attached to the end edge of the surrounding plate to cut off the edge of a door lining. And the punch is matched with the punching hole to punch the door lining. According to the die structure, punching operation can be achieved while edge cutting is conducted on the door lining, the door lining does not need to be transferred for independent punching operation after edge cutting operation, the production efficiency is greatly improved, and meanwhile the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator door lining processing, in particular to a refrigerator door lining punching and trimming die. Background Art

[0002] During the preparation of refrigerator door linings, it is necessary to perform trimming and punching operations on them through molds. The existing door lining punching and trimming molds can only process holes whose axes are parallel to the mold closing direction, while holes whose axes are perpendicular to the mold closing direction need secondary processing. After the trimming of the door lining is completed, it is manually transported to a simple pneumatic punching mold for punching, which is time-consuming and labor-intensive. In addition, when changing the product model, it is necessary to replace both the trimming mold and the punching mold, which greatly affects production efficiency and increases production costs.

[0003] Therefore, the existing refrigerator door lining punching and trimming mold still needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a refrigerator door lining punching and trimming die to solve the deficiencies in the prior art. The door lining can be punched while the door lining is trimmed, which greatly improves production efficiency and reduces production costs.

[0005] In order to achieve one of the above purposes, the present invention provides a refrigerator door lining punching and trimming die, comprising:

[0006] The upper die base is provided with a trimming mechanism and a punching mechanism, wherein the trimming mechanism comprises a rectangular cutter arranged around, and the punching mechanism comprises a punch movably arranged in a horizontal direction;

[0007] A lower die base is arranged opposite to the upper die base, and a die frame capable of accommodating and positioning a lining plate to be processed is arranged on the side of the lower die base facing the upper die base, the die frame has a concave die and a rectangular enclosure plate matching the shape of the cutter, and a punch hole matching the punch is arranged on the concave die. When the mold is closed, the cutting edge of the cutter fits with the end edge of the enclosure plate to cut off the edge of the door lining, and the punch cooperates with the punch hole to punch the door lining.

[0008] As a further improvement of one embodiment of the present invention, the punching mechanism includes a sliding structure, which includes a limit seat arranged on the upper die seat and a sliding seat that slides with the limit seat in a horizontal direction, and the punch is fixed on the sliding seat.

[0009] As a further improvement of one embodiment of the present invention, the upper mold base includes a connecting plate and a floating plate that are relatively arranged, the floating plate can be movably arranged below the connecting plate, the connecting plate is used to connect to the driving source, and the limit seat is fixed to the floating plate.

[0010] As a further improvement of an embodiment of the present invention, a return spring is arranged between the connecting plate and the floating plate, and a guide column extending in a vertical direction is arranged between the connecting plate and the floating plate.

[0011] As a further improvement of one embodiment of the present invention, the punching mechanism also includes a driving plate connected to the connecting plate, the floating plate is provided with a through hole, the driving plate extends through the through hole to below the floating plate, and the driving plate cooperates with the sliding seat to drive the sliding seat to move horizontally on the limit seat.

[0012] As a further improvement of one embodiment of the present invention, a guiding bevel groove is arranged on the sliding seat, and the guiding bevel groove has a bevel groove wall. The driving plate slides with the guiding bevel groove in the vertical direction, and a guiding bevel surface that fits with the bevel groove wall is arranged on the side of the driving plate facing the sliding seat. The guiding bevel surface and the bevel groove wall are arranged to be inclined surfaces that gradually incline from bottom to top toward the direction of the punch, so that the driving plate drives the sliding seat to move toward the die when the mold is closed.

[0013] As a further improvement of an embodiment of the present invention, the limit seat is provided with an avoidance groove for displacement of the driving plate, and the avoidance groove and the guiding inclined groove are open toward one side of the driving plate.

[0014] As a further improvement of an embodiment of the present invention, a limiting structure is provided between the driving plate and the sliding seat so that the guiding inclined surface is always in contact with the inclined groove wall.

[0015] As a further improvement of one embodiment of the present invention, the limiting structure includes a limiting rod fixed on the sliding seat, and the driving plate is provided with a limiting groove for the limiting rod to pass through, and the extension direction of the limiting groove is the same as the extension direction of the guide slope.

[0016] As a further improvement of one embodiment of the present invention, the side wall of the enclosure is closer to the punching mechanism than the side wall of the die.

[0017] Compared with the prior art, the upper die base of the present invention is provided with a trimming mechanism and a punching mechanism. When the upper die base is closed with the lower die base, the cutter in the trimming mechanism can cooperate with the enclosure in the lower die base to realize the trimming operation of the door lining. At the same time, the punch in the punching mechanism can cooperate with the die in the lower die base to realize the punching operation of the door lining. Therefore, the mold structure of the present invention can realize the punching operation while trimming the door lining. There is no need to transfer the door lining after the trimming operation for a separate punching operation, which greatly improves the production efficiency and reduces the production cost.

[0018] The horizontal setting of the punch in the punching mechanism can realize the punching operation on the refrigerator door lining more accurately and improve the yield rate of product processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of a refrigerator door lining punching and trimming die provided by the present invention;

[0020] Figure 2 yes Figure 1 A-A sectional view;

[0021] Figure 3 yes Figure 2 A schematic diagram of the structure of part B in the middle;

[0022] Figure 4 It is an axonometric diagram of a partial structure of a refrigerator door lining punching and trimming die provided by the present invention;

[0023] Figure 5 yes Figure 4 A schematic diagram of the structure enlargement of the C part;

[0024] Figure 6 The invention discloses an exploded diagram of a punching mechanism structure in a refrigerator door lining punching and trimming die.

[0025] Reference numerals:

[0026] 10. Upper die seat; 11. Connecting plate; 12. Floating plate; 13. Return spring; 14. Guide column; 20. Lower die seat; 30. Trimming mechanism; 31. Cutter; 32. Mounting seat; 40. Punching mechanism; 41. Punch; 42. Drive plate; 421. Guide slope; 422. Limiting groove; 43. Perforation; 44. Limiting seat; 441. Avoidance groove; 442. Slide; 45. Sliding seat; 451. Guide inclined groove; 452. Inclined groove wall; 453. Limiting rod; 454. Sliding block; 50. Mold frame; 51. Concave die; 511. Punching; 52. Enclosure; 53. Support seat. DETAILED DESCRIPTION

[0027] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0028] The terms used in this embodiment, such as "upper", "above", "lower", "below", etc., which indicate relative positions in space, are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of relative positions in space may be intended to include different orientations of the device when it is in use or working other than the orientation shown in the drawings. For example, "upper", "lower", "left", "right", "horizontal", and "vertical" in this embodiment are all relative positions in space of the punching and trimming die in normal use.

[0029] It should be noted that, in the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, and can be a fixed connection or a movable connection or a detachable connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the attached embodiment of the present invention. Figure 1 -6. Provide a clear and complete description of the technical solutions in the implementation modes of the present invention.

[0031] An embodiment of the present invention provides a refrigerator door lining punching and trimming die, which is used to perform trimming and punching operations on the refrigerator door lining. The refrigerator door lining is the inner lining on the refrigerator door body, and is made of polystyrene and is usually formed by vacuum adsorption. After the refrigerator door lining is formed, it needs to be trimmed and punched to meet the product assembly requirements of the refrigerator door body.

[0032] The mold includes an upper mold base 10 and a lower mold base 20 that are relatively arranged. The upper mold base 10 and the lower mold base 20 are both arranged in the horizontal direction. The lower mold base 20 can be fixed on a frame or a working plane. The upper mold base 10 is movably arranged in the vertical direction relative to the lower mold base 20. A driving source is arranged on the frame, and the driving source is arranged as a linear driving source. The driving source is used to drive the displacement of the upper mold base 10 in the vertical direction.

[0033] The upper mold base 10 is provided with a trimming mechanism 30 and a punching mechanism 40. When the upper mold base 10 and the lower mold base 20 are closed, the trimming mechanism 30 and the punching mechanism 40 can perform trimming and punching operations on the refrigerator door lining at the same time. When trimming the refrigerator door lining, there is no need to transfer the door lining product for a second time to perform a separate punching operation, which greatly improves the production efficiency of the refrigerator door lining processing and reduces the production cost.

[0034] A mold frame 50 capable of accommodating and positioning the lining to be processed is provided on one side of the lower mold base 20 facing the upper mold base 10. The mold frame 50 has a concave mold 51 located at the bottom and a surrounding plate 52 located at the top. The surrounding plate 52 is set as a rectangular frame structure that matches the edge shape of the door lining and can support the edge of the door lining. A surrounding frame-shaped support seat 53 can be fixed on the lower mold base 20. The concave mold 51 is fixed to the inner side wall of the support seat 53, and the surrounding plate 52 is fixed to the upper side of the support seat 53. The concave mold 51 and the surrounding plate 52 can be detachably fixedly connected to the support seat 53, so that the concave mold 51 and the surrounding plate 52 can be replaced according to the product model of the refrigerator door lining.

[0035] The upper die base 10 includes a connecting plate 11 and a floating plate 12 which are arranged opposite to each other. The driving source is connected to the connecting plate 11 to drive the connecting plate 11 to move in the vertical direction. The floating plate 12 is movably connected to the connecting plate 11. A guide column 14 extending in the vertical direction is arranged between the connecting plate 11 and the floating plate 12, and a return spring 13 is arranged between the connecting plate 11 and the floating plate 12. When the driving source drives the connecting plate 11 to move, the connecting plate 11 drives the floating plate 12 to move.

[0036] The trimming mechanism 30 includes a cutter 31 disposed on the upper die base 10, and the cutter 31 is configured as a rectangular frame structure matching the shape of the enclosure 52. A mounting seat 32 may be fixed to the lower surface of the connecting plate 11, and a through hole for the mounting seat 32 to pass through is provided on the floating plate 12, and the cutter 31 is disposed below the floating plate 12. When the driving source drives the upper die base 10 and the lower die base 20 to close the mold, the cutting edge of the cutter 31 fits the upper edge of the enclosure 52, and the refrigerator door lining can be trimmed.

[0037] The punching mechanism 40 can be arranged on the inner side of the trimming mechanism 30. The punching mechanism 40 includes a punch 41 that can be movably arranged in the horizontal direction. The punch 41 in the punching mechanism 40 is arranged horizontally, which can more accurately realize the punching operation on the refrigerator door lining and improve the yield rate of product processing. The punching mechanism 40 also includes a driving structure and a sliding structure arranged on the upper die base 10. The punch 41 is connected to the sliding structure. The driving structure is used to cooperate with the sliding structure to drive the punch 41 to move in the horizontal direction. The die 51 is provided with a punch 511 that matches the punch 41. When the upper die base 10 and the lower die base 20 are molded, the punch 41 moves horizontally toward one side of the die 51, and the punch 41 cooperates with the punch 511 to perform a punching operation on the door lining.

[0038] The driving structure is provided as a driving plate 42 connected to the connecting plate 11, the driving plate 42 is fixedly connected to the lower surface of the connecting plate 11, a through hole 43 is provided on the floating plate 12 for the driving plate 42 to pass through, and the driving plate 42 passes through the through hole 43 and extends to the bottom of the floating plate 12. The sliding structure includes a limit seat 44 provided on the upper die seat 10, and a sliding seat 45 slidingly matched with the limit seat 44 in the horizontal direction, the limit seat 44 is fixed to the lower surface of the floating plate 12, and the punch 41 is fixed on the sliding seat 45. The driving plate 42 cooperates with the limit seat 44 to drive the limit seat 44 to move in the horizontal direction, so that the sliding seat 45 can drive the punch 41 to move in the horizontal direction.

[0039] In one embodiment, the driving plate 42 and the sliding seat 45 can be matched in a guide surface matching manner. The sliding seat 45 is provided with a guide inclined groove 451, and the guide inclined groove 451 has an inclined groove wall 452. The driving plate 42 slides with the guide inclined groove 451 in the vertical direction. The driving plate 42 is provided with a guide inclined surface 421 that fits with the inclined groove wall 452 on the side facing the sliding seat 45. The guide inclined surface 421 and the inclined groove wall 452 are configured as inclined surfaces that gradually tilt toward the punch 41 from bottom to top. When the driving plate 42 moves downward relative to the sliding seat 45, under the cooperation of the guide inclined surface 421 and the inclined groove wall 452, the driving plate 42 pushes against the sliding seat 45 to move toward the side of the die 51, thereby punching the refrigerator door lining.

[0040] In an optional embodiment, the cooperation between the driving plate 42 and the sliding seat 45 may also adopt other structures. For example, a connecting rod may be provided between the driving plate 42 and the sliding seat 45, and the two ends of the connecting rod are rotatably connected to the driving plate 42 and the sliding seat 45 respectively. When the driving plate 42 is displaced in the vertical direction relative to the sliding seat 45, the driving plate 42 drives the connecting rod to displace, and the connecting rod rotates to push the sliding seat 45 to achieve displacement in the limiting seat 44. As long as the driving structure can enable the driving plate 42 to drive the sliding seat 45 to displace in the horizontal direction, it is within the protection scope of the present invention, and the specific structure is not specifically limited in this embodiment.

[0041] A limiting structure is provided between the driving plate 42 and the sliding seat 45 to make the guiding inclined surface 421 always fit with the inclined groove wall 452. As an example, the limiting structure can be provided as a limiting rod 453 fixed on the sliding seat 45. The driving plate 42 is provided with a limiting groove 422 for the limiting rod 453 to pass through. The extension direction of the limiting groove 422 is the same as the extension direction of the guiding inclined surface 421. When the driving plate 42 moves up and down relative to the sliding seat 45, the limiting rod 453 is always limited in the limiting groove 422. Therefore, during the displacement of the driving plate 42, the guiding inclined surface 421 always fits with the inclined groove wall 452. Such a setting can make the cooperation between the driving plate 42 and the sliding seat 45 more stable.

[0042] It should be noted that the diameter of the limit rod 453 cannot be too small or too large. The diameter of the limit rod 453 can be slightly smaller than the width of the limit slot 422, so that the limit rod 453 can be driven to move in the limit slot 422 more smoothly during the displacement of the driving plate 42, thereby preventing the limit rod 453 from shaking in the limit slot 422 during the movement of the driving plate 42.

[0043] Of course, the limiting structure may also be configured as other structures. For example, a spring or the above-mentioned connecting rod structure may be connected between the driving plate 42 and the sliding seat 45 . This is not specifically limited in this embodiment.

[0044] In order to make the structure between the driving plate 42 and the sliding seat 45 more compact, an avoidance groove 441 for the driving plate 42 to move is provided on the limit seat 44. The avoidance groove 441 and the guide inclined groove 451 are open toward one side of the driving plate 42. The length of the limit seat 44 is the same as that of the sliding seat 45. The length of the avoidance groove 441 of the limit seat 44 is the same as the longest length of the guide inclined groove 451. The cooperation effect between the driving plate 42 and the sliding structure is better.

[0045] When performing trimming and punching operations on refrigerator door linings, first place the refrigerator door lining to be processed on the mold frame 50, and the driving source drives the connecting plate 11 and the floating plate 12 to move downward, and the floating plate 12 first contacts the lower mold plate or the mold frame 50, and at this time, the punch 41 moves to one side of the die 51. The position of the floating plate 12 is fixed first, and the driving source continues to drive the connecting plate 11 to move downward, and the driving plate 42 moves downward, and the guide inclined surface 421 moves relative to the inclined groove wall 452, and the driving plate 42 pushes against the sliding seat 45 to move on the limit seat 44, and the sliding seat 45 drives the punch 41 to move horizontally to one side of the die 51, so as to achieve the punching operation of the refrigerator door lining.

[0046] After completing the trimming and punching operations, the driving source drives the connecting plate 11 to move upward, and the connecting plate 11 drives the driving plate 42 to move upward. The driving plate 42 drives the sliding seat 45 to return to its original position through the cooperation of the limiting rod 453 and the limiting groove 422, so that the punch 41 withdraws from the die 51, and the floating plate 12 is separated from the lower template or the mold frame 50. Then, the processed refrigerator door lining product is separated from the mold frame 50 to complete the trimming and punching operations of the refrigerator door lining.

[0047] It is further defined that a slide groove 442 with a T-shaped cross-section is provided in the limit seat 44, and a slider 454 with the same T-shaped cross-section is fixedly connected to the sliding seat 45. The slider 454 slides in cooperation with the slide groove 442, and both sides of the slide groove 442 are open to facilitate assembly cooperation between the sliding seat 45 and the limit seat 44.

[0048] It is further defined that the side wall of the enclosure 52 is closer to the punching mechanism 40 than the side wall of the die 51, and there is a gap between the outer wall of the refrigerator door lining to be processed and the die 51. When punching, waste material of the refrigerator door lining can fall from the gap, which is convenient for cleaning and collection of the waste material.

[0049] In this embodiment, two back-to-back punching mechanisms 40 are provided, which can simultaneously punch holes on both sides of the refrigerator door lining. Of course, the number of punching mechanisms 40 can be adjusted according to the product requirements of the refrigerator door lining, and this embodiment does not make any specific limitations.

[0050] The above-mentioned driving source can be any one of a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, a screw nut, and a gear rack, as long as it can make the upper die base 10 move linearly in the vertical direction, and this embodiment does not make any specific limitation. Of course, the punching mechanism 40 can also be set as a separate driving structure, such as any one of a hydraulic cylinder, a pneumatic cylinder, an electric cylinder, a screw nut, and a gear rack, which can be set separately under the floating plate 12, and this embodiment also does not make any specific limitation.

[0051] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A refrigerator door lining punching and trimming die, characterized in that: include: The upper die base (10) is provided with a trimming mechanism (30) and a punching mechanism (40), wherein the trimming mechanism (30) comprises a rectangular cutter (31) arranged around, and the punching mechanism (40) comprises a punch (41) movably arranged in a horizontal direction; A lower die base (20) is arranged opposite to the upper die base (10), and a die frame (50) capable of accommodating and positioning a lining plate to be processed is arranged on the side of the lower die base (20) facing the upper die base (10), and the die frame (50) has a die (51) and a rectangular enclosure (52) matching the shape of the cutter (31), and a punch hole (511) matching the punch (41) is arranged on the die (51). When the mold is closed, the cutting edge of the cutter (31) fits with the end edge of the enclosure (52) to cut off the edge of the door lining, and the punch (41) cooperates with the punch hole (511) to punch the door lining.

2. The refrigerator door lining punching and trimming die according to claim 1, characterized in that: The punching mechanism (40) comprises a sliding structure, wherein the sliding structure comprises a limit seat (44) arranged on the upper die seat (10) and a sliding seat (45) slidingly matched with the limit seat (44) in a horizontal direction, and the punch (41) is fixed on the sliding seat (45).

3. The refrigerator door lining punching and trimming die according to claim 2, characterized in that: The upper die seat (10) comprises a connecting plate (11) and a floating plate (12) which are arranged opposite to each other. The floating plate (12) is movably arranged below the connecting plate (11). The connecting plate (11) is used to be connected to the driving source. The limiting seat (44) is fixed to the floating plate (12).

4. The refrigerator door lining punching and trimming die according to claim 3, characterized in that: A return spring (13) is arranged between the connecting plate (11) and the floating plate (12), and a guide column (14) extending in a vertical direction is arranged between the connecting plate (11) and the floating plate (12).

5. The refrigerator door lining punching and trimming die according to claim 3, characterized in that: The punching mechanism (40) further comprises a driving plate (42) connected to the connecting plate (11); a through hole (43) is provided on the floating plate (12); the driving plate (42) passes through the through hole (43) and extends to below the floating plate (12); the driving plate (42) cooperates with the sliding seat (45) to drive the sliding seat (45) to move horizontally on the limiting seat (44).

6. The refrigerator door lining punching and trimming die according to claim 5, characterized in that: The sliding seat (45) is provided with a guide inclined groove (451), and the guide inclined groove (451) has an inclined groove wall (452). The driving plate (42) is slidably matched with the guide inclined groove (451) in the vertical direction. The driving plate (42) is provided with a guide inclined surface (421) that is in contact with the inclined groove wall (452) on the side facing the sliding seat (45). The guide inclined surface (421) and the inclined groove wall (452) are arranged as inclined surfaces that gradually incline from bottom to top toward the punch (41), so that the driving plate (42) drives the sliding seat (45) to move toward the die (51) when the mold is closed.

7. The refrigerator door lining punching and trimming die according to claim 6, characterized in that: The limiting seat (44) is provided with an avoidance groove (441) for the drive plate (42) to move, and the avoidance groove (441) and the guide inclined groove (451) are openly arranged toward one side of the drive plate (42).

8. The refrigerator door lining punching and trimming die according to claim 6, characterized in that: A limiting structure is provided between the driving plate (42) and the sliding seat (45) so that the guiding inclined surface (421) is always in contact with the inclined groove wall (452).

9. The refrigerator door lining punching and trimming die according to claim 8, characterized in that: The limiting structure comprises a limiting rod (453) fixed on the sliding seat (45), and the driving plate (42) is provided with a limiting groove (422) for the limiting rod (453) to pass through, and the extension direction of the limiting groove (422) is the same as the extension direction of the guiding inclined surface (421).

10. The refrigerator door lining punching and trimming die according to claim 1, characterized in that: The side wall of the enclosure (52) is closer to the punching mechanism (40) than the side wall of the die (51).

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