Lampshade forming die pressing device

Abstract

The invention relates to the technical field of molds, in particular to a lampshade forming mold pressing device which comprises a bottom plate, a top plate, guide columns, a lower mold table and an upper mold table, a forming groove matched with a lampshade side plate in shape is formed in the upper surface of the lower mold table, and a forming column corresponding to the forming groove is arranged at the bottom of the upper mold table; the device further comprises a conveying assembly and a limiting assembly. The two conveying assemblies are symmetrically installed on the left side and the right side of the lower die table and each comprise a first driving part, a movable base and a roller installed on the movable base, the movable bases are driven by the first driving parts to do lifting motion in the height direction of the lower die table, and the rollers make contact with a to-be-machined plate and then drive the to-be-machined plate to transversely move to the position over the forming groove. According to the technical scheme, through the conveying assembly and the limiting assembly which are symmetrically arranged, automatic transverse movement and accurate clamping and positioning of the plate are achieved, the manual adjusting step is optimized, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a lampshade forming die device. Background Art

[0002] With the continuous improvement of industrial safety standards, explosion-proof lamps are increasingly used in flammable and explosive environments. As a key component of lamps, the manufacturing quality of explosion-proof lampshades is directly related to the safety performance and service life of the lamps. As the core tool for the production of explosion-proof lampshades, the technical level of die-casting molds is particularly important.

[0003] The patent document with patent announcement number: CN118788947A discloses an explosion-proof lampshade die-casting mold, including a fixed plate, a fixed frame is fixed on one side of the fixed plate, a movable mold is fixed on one side of the fixed frame, a movable mold core is installed inside one side of the movable mold, a groove is provided at the corner of one side of the movable mold core, and a first limiting hole for installation is penetrated through the corner of the movable mold core, and a movable mold cavity is provided at the center of one side of the movable mold core, a mold core is provided at the center of the movable mold cavity, and an arc-shaped first flow channel is provided at the bottom of one side of the movable mold cavity, and a plurality of residual material flow channels for discharging excess metal solution are provided on the other side of the movable mold cavity.

[0004] In the above scheme, the lampshade is cast by metal solution die-casting. The structure of this lampshade is relatively delicate and complex, and the cost is high. For a mining lampshade, high protection and low cost are the primary considerations.

[0005] Based on this, a simple lampshade design method is proposed, such as Figure 6 As shown, it includes two symmetrical side panels and a middle panel connecting the two side panels, thereby forming a complete lampshade structure. The side panels are formed by placing the sheet to be processed above the forming groove of the lower die table, and then driving the upper die table to press down. However, when manufacturing the side panels, it is difficult to accurately place the sheet to be processed above the forming groove, so it is necessary to manually adjust the position of the sheet to be processed continuously, which limits the processing efficiency and needs to be optimized. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the present invention is to provide a lampshade molding die device to improve production efficiency.

[0007] The purpose of the present invention can be achieved through the following technical solutions: A lampshade molding die pressing device comprises a bottom plate, a top plate, a guide column, a lower die table and an upper die table, wherein the upper surface of the lower die table is provided with a molding groove matching the shape of the lampshade side plate, and the bottom of the upper die table is provided with a molding column corresponding to the molding groove; it also comprises a transmission component and a limit component; the two transmission components are symmetrically installed on the left and right sides of the lower die table, comprising a driving member 1, a movable seat and a roller installed on the movable seat, the movable seat is driven by the driving member 1 to perform a lifting movement along the height direction of the lower die table, and the roller drives the plate to be processed to move horizontally to just above the molding groove after contacting it; the limit component is symmetrically installed on the front and rear sides of the lower die table, comprising a driving member 2 and a limit plate, and the limit plate clamps and limits the plate to be processed from both sides under the drive of the driving member 2.

[0008] In some embodiments of the present invention, a guide column is arranged between the bottom plate and the top plate, the top surface of the bottom plate and the bottom surface of the top plate are respectively provided with the lower mold platform and the upper mold platform, and a pressure column for receiving the hydraulic drive equipment is also arranged on the top of the top plate.

[0009] In some embodiments of the present invention, a lifting cylinder is provided at the bottom of the lower die table, the output end of the lifting cylinder passes through the top surface of the lower die table, and the output end of the lifting cylinder is parallel to the surface of the forming groove in a retracted state.

[0010] In some embodiments of the present invention, the second driving member includes a limit cylinder, a support plate and an adapter. The limit plate and the support plate are installed on the side of the lower die table in sequence from high to low. The limit plate and the limit plate are rotatably connected to the lower die table, and the support plate is fixedly connected to the side of the lower die table. The bottom end of the limit cylinder is connected to the support plate, and the output end of the limit cylinder faces upward and is rotatably connected to one end of the adapter, and the other end of the adapter is rotatably connected to the limit plate.

[0011] In some embodiments of the present invention, the limiting plate has a contact point with the sheet material to be processed which is not accurately placed above the forming groove during the rotation stroke.

[0012] In some embodiments of the present invention, the middle position of the top of the lower mold platform is the forming groove, the two sides of the top of the lower mold platform are horizontally arranged pressure-bearing surfaces, the left and right side surfaces of the lower mold platform are downwardly inclined lower slopes, and the top of the lower slope is connected to the pressure-bearing surface.

[0013] In some embodiments of the present invention, the driving member 1 includes a transmission motor and a screw rod, the transmission motor is installed at the bottom of the lower inclined surface, the direction of the output end of the transmission motor is the same as the inclination direction of the lower inclined surface, the output end of the transmission motor is connected to the screw rod, the screw rod is threadedly connected to the movable seat, one side surface of the movable seat is in contact with the lower inclined surface, and the top surface of the movable seat is rollingly connected to the roller.

[0014] In some embodiments of the present invention, a slide rail is installed on the surface of the lower inclined surface, and a slide groove rotatably connected to the slide rail is opened on the surface of the movable seat.

[0015] In some embodiments of the present invention, the roller may be a motorized wheel hub.

[0016] In some embodiments of the present invention, anti-slip grooves are formed on the surface of the roller.

[0017] Beneficial effects of the present invention: Compared with the traditional method, this technical solution realizes automatic lateral movement and precise clamping positioning of the plate through symmetrically arranged transmission components (driving component 1, movable seat, roller) and limit components (driving component 2, limit plate), optimizes manual adjustment steps, and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 is a stereoscopic view of the present invention; Figure 2 It is a front view of the lower die table and the upper die table in the present invention; Figure 3 It is a three-dimensional view of the lower die table, the limiting assembly and the transmission assembly in the present invention; Figure 4 yes Figure 3 A partial enlarged view of the middle A; Figure 5 It is a three-dimensional view of the movable seat in the present invention; Figure 6 It is a top view of the lampshade body in the present invention.

[0020] In the figure: 1. bottom plate; 2. top plate; 21. pressure column; 3. guide column; 4. lower die table; 41. forming groove; 42. pressure surface; 43. lower inclined surface; 5. upper die table; 51. forming column; 6. limit assembly; 61. limit cylinder; 62. support plate; 63. adapter; 64. limit plate; 7. transmission assembly; 71. transmission motor; 72. screw rod; 73. movable seat; 74. slide rail; 75. slide groove; 76. roller; 8. lifting cylinder; 9. side plate; 91. middle plate. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 , Figure 2 As shown, a lampshade molding die device includes a bottom plate 1, a top plate 2, a guide column 3, a lower die table 4 and an upper die table 5, a guide column 3 is arranged between the bottom plate 1 and the top plate 2, the top surface of the bottom plate 1 and the bottom surface of the top plate 2 are respectively provided with a lower die table 4 and an upper die table 5, a pressure-bearing column 21 for receiving a hydraulic drive device is also arranged on the top of the top plate 2, a molding groove 41 matching the shape of the lampshade side plate 9 is arranged on the upper surface of the lower die table 4, and a molding column 51 corresponding to the molding groove 41 is arranged at the bottom of the upper die table 5.

[0023] The bottom plate 1 and the top plate 2 are connected by the guide column 3 to ensure the coaxiality of the lower die table 4 and the upper die table 5 during the pressing process; the forming groove 41 of the lower die table 4 is precisely matched with the forming column 51 of the upper die table 5, and the pressure is applied to the pressure column 21 by the hydraulic driving device to press the plate into the preset shape of the lampshade side plate 9, and then the two side plates 9 are welded and connected by the middle plate 91 and combined into a closed whole, such as Figure 6 shown.

[0024] It should be noted that the bottom plate 1 and the top plate 2 adopt a box-type structure design, with additional reinforcing ribs inside, which increases the deformation resistance by 30%.

[0025] As an example, the guide column 3 can be designed as a detachable structure to adapt to molds of different heights.

[0026] As an example, a nitrogen spring is added between the top plate 2 and the upper die table 5 to absorb the pressing impact force and reduce noise.

[0027] The die pressing device also includes a transmission component 7 and a limit component 6; the two transmission components 7 are symmetrically installed on the left and right sides of the lower die table 4, including a driving member 1, a movable seat 73 and a roller 76 installed on the movable seat 73. The movable seat 73 is driven by the driving member 1 to perform a lifting movement along the height direction of the lower die table 4. After the roller 76 contacts the plate to be processed, it drives it to move horizontally to just above the molding groove 41.

[0028] like Figure 3 , Figure 5As shown, in some embodiments of the present invention, the driving member 1 includes a transmission motor 71 and a screw 72. The transmission motor 71 is installed at the bottom of the lower inclined surface 43. The direction of the output end of the transmission motor 71 is the same as the inclination direction of the lower inclined surface 43. The output end of the transmission motor 71 is connected to the screw 72, and the screw 72 is threadedly connected to the movable seat 73. One side surface of the movable seat 73 is in contact with the lower inclined surface 43, and the top surface of the movable seat 73 is rollingly connected to the roller 76. A slide rail 74 is installed on the surface of the lower inclined surface 43, and a slide groove 75 is provided on the surface of the movable seat 73 to be rotatably connected to the slide rail 74. In use, the transmission motor 71 drives the screw 72 to rotate, driving the movable seat 73 to rise and fall along the slide rail 74 of the lower inclined surface 43; after the roller 76 on the top of the movable seat 73 contacts the plate to be processed, it drives the plate to slide horizontally to the top of the forming groove 41 through friction. After the plate is moved into position, the movable seat 73 can be reset by reversing the motor, so that the plate will not abut against the roller 76 after being pressed, thereby ensuring the service life of the roller 76.

[0029] The use of the transmission component 7 to drive the lateral displacement of the plate has the following advantages: the transmission accuracy of the screw rod 72 reaches ±0.1mm, and the transmission speed is adjustable (0.1-1m / s) to adapt to different production rhythms; and the roller 76 is coated with polyurethane, and elastic deformation compensates for the thickness difference of the plate (±2mm).

[0030] As an example, an industrial camera is installed at the end of the transmission path to provide real-time feedback on the position of the plate and to control the start and stop of the roller 76 in a closed loop.

[0031] The limiting assembly 6 is symmetrically installed on the front and rear sides of the lower die table 4, and includes a second driving member and a limiting plate 64. The limiting plate 64 is driven by the second driving member to clamp and limit the plate to be processed from both sides.

[0032] like Figure 3 , Figure 4As shown, in some embodiments of the present invention, the second driving member includes a limit cylinder 61, a support plate 62 and an adapter 63. The limit plate 64 and the support plate 62 are sequentially installed on the side of the lower die table 4 from high to low. The limit plate 64 is rotatably connected to the lower die table 4, and the support plate 62 is fixedly connected to the side of the lower die table 4. The bottom end of the limit cylinder 61 is connected to the support plate 62. The output end of the limit cylinder 61 faces upward and is rotatably connected to one end of the adapter 63, and the other end of the adapter 63 is rotatably connected to the limit plate 64. In use, the limit cylinder 61 drives the limit plate 64 to rotate around the hinge point through the adapter 63, clamping the plate from the front and back sides. The limit plate 64 has a contact point with the plate to be processed that is not accurately placed above the molding groove 41 during the rotation stroke. The contact surface of the limit plate 64 is provided with an elastic buffer pad (silicone rubber, thickness 3mm) to avoid hard contact and damage to the plate. When the plate is offset, the rotation stroke of the limiting plate 64 will automatically compensate for the position deviation until the limiting plate 64 abuts against the side surface of the lower die table 4 , forcing the plate to be corrected to the center of the forming groove 41 .

[0033] As an example, the limit plate 64 is integrated with a pressure sensor to automatically adjust the clamping distance according to the thickness of the plate.

[0034] As an example, auxiliary limit blocks are added in the length direction of the plate to prevent the long plate from bending.

[0035] This solution realizes automatic lateral movement and precise clamping and positioning of the plate through symmetrically arranged transmission components 7 and limit components 6, completely replacing manual adjustment and greatly improving production efficiency. In addition, this solution uses a simple plate forming method to replace the traditional metal die-casting process, reducing material waste and equipment investment, and is particularly suitable for mass production of mining lampshades to meet low-cost requirements.

[0036] like Figure 2 , Figure 3 As shown, in some embodiments of the present invention, a lifting cylinder 8 is provided at the bottom of the lower die table 4, and the output end of the lifting cylinder 8 passes through the top surface of the lower die table 4, and the output end of the lifting cylinder 8 is parallel to the surface of the molding groove 41 in the contracted state. After the molding is completed, the upper die table 5 is separated from the lower die table 4, and the lifting cylinder 8 pushes the molded part to rise and separate from the molding groove 41, reducing the risk of scratches on the surface of the plate and ensuring the quality of the finished product. A pressure sensor is provided at the output end of the lifting cylinder 8 to monitor the lifting force (0-10kN) in real time, and automatically shut down for protection when the limit is exceeded.

[0037] As an example, large molds are driven synchronously by 4 cylinders to ensure balanced lifting.

[0038] like Figure 3As shown, in some embodiments of the present invention, the middle position of the top of the lower die table 4 is a forming groove 41, the two sides of the top of the lower die table 4 are horizontally arranged pressure-bearing surfaces 42, the left and right side surfaces of the lower die table 4 are downwardly inclined lower slopes 43, and the top of the lower slope 43 is connected to the pressure-bearing surface 42. The contour of the forming groove 41 is precisely milled by a five-axis machining center, and is completely matched with the 3D model of the lampshade side panel 9. The pressure-bearing surface 42 is sprayed with a tungsten carbide coating (thickness 0.2mm), the hardness reaches HRC65, and the wear resistance is increased by 5 times. The inclination angle of the lower slope 43 is 30°, which guides the metal sheet to extend naturally during the pressing process, and does not contact other positions of the upper die table 5 to avoid conflicts and safety accidents.

[0039] In this solution, the molding groove 41 of the lower mold platform 4 is matched with the molding column 51 of the upper mold platform 5, and the wear-resistant coating of the guide column 3 and the pressure-bearing surface 42 is combined to ensure the vertical accuracy and uniform pressure distribution of the molding process, thereby improving the structural strength and protective performance of the lampshade.

[0040] In some embodiments of the present invention, the roller 76 may be an electric wheel hub with a built-in brushless motor, and the speed is controlled by a frequency converter (0-500 rpm). The electric wheel hub can independently control the left and right speeds to achieve fine-tuning of the plate centering.

[0041] In some embodiments of the present invention, the surface of the roller 76 is formed with anti-skid patterns, which are diamond-shaped protrusions with a height of 0.5 mm. Through laser engraving, the friction coefficient is increased to 0.8, and effective friction can still be maintained in an oily environment.

[0042] As an example, a cylinder-driven pressing wheel is added on the opposite side of the roller 76, which is suitable for smooth plates.

[0043] Through mechanical automation and structural optimization, this solution solves the problems of high labor dependence, high cost and low efficiency in traditional processes, and achieves efficient, precise and low-cost molding of lampshades, while improving product consistency and reliability. It is especially suitable for industrial scenarios with strict requirements on protective performance.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A lampshade molding die device, comprising a bottom plate, a top plate, a guide column, a lower die table and an upper die table, characterized in that: The upper surface of the lower die table is provided with a molding groove matching the shape of the lampshade side plate, and the bottom of the upper die table is provided with a molding column corresponding to the molding groove; it also includes a transmission component and a limit component; the two transmission components are symmetrically installed on the left and right sides of the lower die table, including a driving member 1, a movable seat and a roller installed on the movable seat, and the movable seat is driven by the driving member 1 to perform a lifting movement along the height direction of the lower die table, and the roller drives the plate to be processed to move horizontally to just above the molding groove after contacting it; the limit component is symmetrically installed on the front and rear sides of the lower die table, including a driving member 2 and a limit plate, and the limit plate clamps and limits the plate to be processed from both sides under the drive of the driving member 2.

2. A lampshade forming die device according to claim 1, characterized in that: A guide column is arranged between the bottom plate and the top plate, the top surface of the bottom plate and the bottom surface of the top plate are respectively provided with the lower die table and the upper die table, and a pressure column for receiving a hydraulic drive device is also arranged on the top of the top plate.

3. A lampshade forming die device according to claim 1, characterized in that: A lifting cylinder is arranged at the bottom of the lower die table, and an output end of the lifting cylinder penetrates the top surface of the lower die table, and the output end of the lifting cylinder is parallel to the surface of the forming groove in a contracted state.

4. A lampshade forming die device according to claim 1, characterized in that: The second driving component includes a limit cylinder, a support plate and an adapter. The limit plate and the support plate are installed on the side of the lower die table in sequence from high to low. The limit plate and the limit plate are rotatably connected to the lower die table, and the support plate is fixedly connected to the side of the lower die table. The bottom end of the limit cylinder is connected to the support plate, and the output end of the limit cylinder faces upward and is rotatably connected to one end of the adapter, and the other end of the adapter is rotatably connected to the limit plate.

5. A lampshade forming die device according to claim 5, characterized in that: During the rotational stroke, the limiting plate has a contact point with the plate to be processed which is not accurately placed above the forming groove.

6. A lampshade forming die device according to claim 1, characterized in that: The middle position of the top of the lower die table is the forming groove, the two sides of the top of the lower die table are horizontally arranged pressure-bearing surfaces, the left and right side surfaces of the lower die table are downwardly inclined lower slopes, and the tops of the lower slopes are connected to the pressure-bearing surfaces.

7. A lampshade forming die device according to claim 6, characterized in that: The driving member 1 includes a transmission motor and a screw rod. The transmission motor is installed at the bottom of the lower inclined surface. The direction of the output end of the transmission motor is the same as the inclination direction of the lower inclined surface. The output end of the transmission motor is connected to the screw rod, and the screw rod is threadedly connected to the movable seat. One side surface of the movable seat is in contact with the lower inclined surface, and the top surface of the movable seat is rollingly connected to the roller.

8. A lampshade forming die device according to claim 6, characterized in that: A slide rail is installed on the surface of the lower inclined surface, and a slide groove rotatably connected to the slide rail is provided on the surface of the movable seat.

9. A lampshade forming die device according to claim 1, characterized in that: The roller may be a motorized wheel hub.

10. A lampshade forming die device according to claim 1, characterized in that: The surface of the roller is formed with anti-skid patterns.

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