Composite die for folding U-shaped wrap angle of door shell

Abstract

The utility model relates to the technical field of door shell folding U-shaped wrap angle composite dies, and discloses a door shell folding U-shaped wrap angle composite die which comprises an upper die plate, four sets of positioning columns are connected to the surface of the upper die plate in a sliding mode, a lower die plate is fixedly connected to the bottoms of the positioning columns, a pressurizing block is fixedly connected to the bottom of the upper die plate, and the pressurizing block is fixedly connected to the bottom of the lower die plate. The two sides of the bottom of the pressurizing block are both in threaded connection with two demolding assemblies. According to the door shell U wrap angle bending composite die, by arranging the bending assembly, when U wrap angles need to be bent, a door shell is placed on a bearing plate, an upper die plate presses downwards in the axial direction of a positioning column, the bearing plate shrinks downwards through pressure, then the bearing plate presses four sets of bending columns, the bending columns slide in grooves of a base in a steering mode, and the U wrap angles are bent. The periphery, exceeding the range of the bearing plate, of the door shell is extruded and bent inwards, so that the effect of rapidly bending the U-shaped wrap angle of the door shell is achieved, one-time forming is facilitated, the bending step is reduced, and the production efficiency of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door shell U-shaped corner folding composite molds, in particular to a door shell U-shaped corner folding composite mold. Background Art

[0002] Molds refer to various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. The mold is a precision tool with a complex shape. It bears the expansion force of the blank and has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing. The composite mold is a punching die that can complete multiple processes at the same time under one stroke of the press. Therefore, a composite mold for folding U corners of door shells is needed to facilitate the one-time molding of door shells, reduce bending steps and quickly demold.

[0003] A bending corner mold for a refrigerator door shell disclosed in the authorization announcement number CN214517117U includes an upper mold and a lower mold, wherein the upper mold includes an upper mold base, a first pressing plate installed at the bottom of the upper mold base, and a corner punch mechanism movably connected to the upper mold base, and the corner punch mechanism is located at both ends of the first pressing plate; the lower mold includes a lower mold base, a plurality of clamping blocks fixed to the lower mold base, a fixed block, a second pressing plate installed at the top of the lower mold base, and a corner die mechanism movably connected to the lower mold base, and the corner die mechanism is located on both sides of the second pressing plate; the clamping block is provided with a first extrusion sheet in contact with the first pressing plate, the corner die mechanism is provided with a third driving block, the upper mold base is provided with a second driving block for extruding the third driving block, the corner punch mechanism is provided with a first driving block, and the fixed block fits and extrudes the first driving block. The utility model reduces the wear of the mold by adding an extrusion sheet and a driving block, and avoids scratches and wrinkles on the door shell.

[0004] However, the bending corner mold of the refrigerator door shell has the following disadvantages: when a U-shaped corner needs to be folded, it is not convenient to form it in one step, thereby reducing the bending steps; and after the mold is pressed, it is not convenient to demold quickly, thereby reducing the workload of manual demolding. Summary of the invention

[0005] The technical problem solved by the utility model is to provide a door shell U-shaped corner folding composite mold which is highly practical, can be simply operated and has a relatively simple structure, thereby solving the problem in the above background technology that it is inconvenient to form the door shell in one step, reduce the bending steps and quickly demould.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a door shell U-fold corner composite mold, including an upper template, the surface of the upper template is slidably connected with four groups of positioning columns, the bottom of the positioning columns is fixedly connected with the lower template, the bottom of the upper template is fixedly connected with a pressure block, both sides of the bottom of the pressure block are threadedly connected with two groups of demolding components, the top surface of the lower template is fixedly connected with four groups of bending components, and the top surface of the lower template is fixedly connected with two groups of buffer components.

[0007] Optionally, the demoulding assembly includes a fixing plate threadedly connected to one side of the bottom of the pressure block, a pressure spring is fixedly connected to the surface of the fixing plate, a positioning hydraulic rod is sleeved inside the pressure spring, and a side pressure block is fixedly connected to the bottom of the positioning hydraulic rod to facilitate extrusion demoulding.

[0008] Optionally, the bending assembly includes a base fixedly connected to the top surface of the lower template, and a bending column is slidably connected inside the base, and the bending column facilitates bending of the door shell.

[0009] Optionally, the buffer assembly includes a limiting hydraulic rod fixedly connected to the top surface of the lower template, and a buffer spring is sleeved on the surface of the limiting hydraulic rod, and the buffer spring is convenient for buffering pressure to press the load-bearing plate downward.

[0010] Optionally, the top surface of the buffer spring is fixedly connected to a support block, and the top of the support block is threadedly connected to a load-bearing plate, and the load-bearing plate facilitates pressing the bending column.

[0011] Optionally, the surfaces of the fixing plate and the pressure block are provided with four groups of fixing holes in a rectangular array, and the internal threads of the fixing holes are connected with threaded bolts, which facilitate the connection between the fixing plate and the pressure block.

[0012] Optionally, two groups of threaded holes are provided on the surfaces of the support block and the load-bearing plate, and threaded columns penetrate the interior of the threaded holes, so as to facilitate fixing the support block and the load-bearing plate.

[0013] The utility model provides a door shell U-shaped corner composite mold, which has the following beneficial effects:

[0014] 1. The U-shaped corner folding composite mold for the door shell is provided with a bending component. When it is necessary to fold the door shell into a U-shaped corner, the door shell is placed on the load-bearing plate, and the upper template is pressed downward along the axis of the positioning column. The pressure causes the load-bearing plate to shrink downward, and then the load-bearing plate is pressed toward the four groups of bending columns. The bending columns turn and slide in the grooves of the base, so that the periphery of the door shell that exceeds the range of the load-bearing plate is squeezed and bent inward, thereby achieving the effect of quickly folding the door shell into a U-shaped corner, facilitating one-time molding, reducing the bending steps, and improving the production efficiency of the mold.

[0015] 2. The door shell U-folded corner composite mold is provided with a demoulding component. During the molding process, the pressure block is pressed down on the load-bearing plate, and the pressure spring is squeezed and deformed by force to generate elastic force. When the pressurization is completed, the pressure block moves upward, and the pressure spring restores the elastic force generated by the deformation to push the door shell compacted on the surface of the side pressure block, so that the door shell is squeezed downward by the side pressure block, thereby achieving the effect of convenient demoulding, reducing the workload of manual demoulding, and improving the convenience of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the buffer component and the bending component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the demoulding component of the utility model.

[0020] In the figure: 1. upper template; 2. positioning column; 3. lower template; 4. pressure block; 5. demoulding assembly; 501. fixing plate; 502. pressure spring; 503. positioning hydraulic rod; 504. side pressure block; 6. bending assembly; 601. base; 602. bending column; 7. buffer assembly; 701. limiting hydraulic rod; 702. buffer spring; 8. support block; 9. load-bearing plate; 10. threaded bolt; 11. threaded column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a composite mold for folding a door shell into a U shape, comprising an upper mold plate 1, the surface of the upper mold plate 1 is slidably connected with four groups of positioning columns 2, the bottom of the positioning columns 2 is fixedly connected with a lower mold plate 3, the bottom of the upper mold plate 1 is fixedly connected with a pressure block 4, both sides of the bottom of the pressure block 4 are threadedly connected with two groups of demoulding components 5, through the setting of the demoulding components 5, the effect of convenient demoulding is achieved, the workload of manual demoulding is reduced, and the convenience of the mold is improved, the top surface of the lower mold plate 3 is fixedly connected with four groups of bending components 6, through the setting of the bending components 6, the effect of quickly folding the door shell into a U shape is achieved, which is convenient for one-time molding, reduces the bending steps, and improves the production efficiency of the mold, and the top surface of the lower mold plate 3 is fixedly connected with two groups of buffer components 7.

[0023] The demoulding assembly 5 includes a fixing plate 501 threadedly connected to one side of the bottom of the pressure block 4, a pressure spring 502 is fixedly connected to the surface of the fixing plate 501, a positioning hydraulic rod 503 is sleeved inside the pressure spring 502, and a side pressure block 504 is fixedly connected to the bottom of the positioning hydraulic rod 503.

[0024] The bending assembly 6 includes a base 601 fixedly connected to the top surface of the lower template 3 , and a bending column 602 is slidably connected inside the base 601 .

[0025] The buffer assembly 7 includes a limiting hydraulic rod 701 fixedly connected to the top surface of the lower mold plate 3 , and a buffer spring 702 is sleeved on the surface of the limiting hydraulic rod 701 .

[0026] The top surface of the buffer spring 702 is fixedly connected to a support block 8 , and the top of the support block 8 is threadedly connected to a load-bearing plate 9 .

[0027] The surfaces of the fixing plate 501 and the pressure block 4 are both provided with four groups of fixing holes in a rectangular array, and the internal threads of the fixing holes are connected with threaded bolts 10 .

[0028] Two groups of threaded holes are formed on the surfaces of the support block 8 and the load-bearing plate 9 , and threaded columns 11 penetrate the inside of the threaded holes.

[0029] In the utility model, the working steps of the device are as follows:

[0030] The first step: during the molding process, the pressure block 4 is pressed down on the load-bearing plate 9, and the pressure spring 502 is squeezed and deformed to generate elastic force.

[0031] The second step: when the pressurization is completed, the pressurizing block 4 moves upward, and the pressurizing spring 502 restores the elastic force generated by the deformation to push the door shell compacted on the surface of the side pressing block 504, so that the door shell is squeezed downward by the side pressing block 504.

[0032] The third step: when it is necessary to fold the door shell into a U shape, place the door shell on the load-bearing plate 9, and press the upper template 1 downward along the axis of the positioning column 2. The pressure causes the load-bearing plate 9 to shrink downward, and then the load-bearing plate 9 is pressed toward the four groups of bending columns 602. The bending columns 602 turn and slide in the grooves of the base 601, so that the periphery of the door shell that exceeds the range of the load-bearing plate 9 is squeezed and bent inward.

[0033] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above-mentioned utility model, the details of its power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by technical personnel in this field.

[0034] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door shell U-shaped corner composite mold, comprising an upper mold plate (1), characterized in that: The surface of the upper template (1) is slidably connected to four groups of positioning columns (2), the bottom of the positioning columns (2) is fixedly connected to the lower template (3), the bottom of the upper template (1) is fixedly connected to a pressure block (4), both sides of the bottom of the pressure block (4) are threadedly connected to two groups of demoulding components (5), the top surface of the lower template (3) is fixedly connected to four groups of bending components (6), and the top surface of the lower template (3) is fixedly connected to two groups of buffer components (7).

2. A door shell U-shaped corner composite mold according to claim 1, characterized in that: The demoulding assembly (5) comprises a fixing plate (501) threadedly connected to one side of the bottom of the pressure block (4); a pressure spring (502) is fixedly connected to the surface of the fixing plate (501); a positioning hydraulic rod (503) is sleeved inside the pressure spring (502); and a side pressure block (504) is fixedly connected to the bottom of the positioning hydraulic rod (503).

3. A door shell U-shaped corner composite mold according to claim 1, characterized in that: The bending assembly (6) comprises a base (601) fixedly connected to the top surface of the lower template (3), and a bending column (602) is slidably connected inside the base (601).

4. The door shell U-shaped corner composite mold according to claim 1, characterized in that: The buffer assembly (7) comprises a limit hydraulic rod (701) fixedly connected to the top surface of the lower template (3), and a buffer spring (702) is sleeved on the surface of the limit hydraulic rod (701).

5. A door shell U-shaped corner composite mold according to claim 4, characterized in that: The top surface of the buffer spring (702) is fixedly connected to a support block (8), and the top of the support block (8) is threadedly connected to a load-bearing plate (9).

6. The U-shaped corner folding composite mold for a door shell according to claim 2, characterized in that: The surfaces of the fixing plate (501) and the pressure block (4) are both provided with four groups of fixing holes in a rectangular array, and the internal threads of the fixing holes are connected with threaded bolts (10).

7. The door shell U-shaped corner composite mold according to claim 5, characterized in that: The surfaces of the support block (8) and the load-bearing plate (9) are each provided with two groups of threaded holes, and threaded columns (11) penetrate the interiors of the threaded holes.

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