A die pressing device for the production of high-strength manhole covers

Abstract

The present invention discloses a die pressing device for the production of high-strength manhole covers, including a structural framework, which includes a cross beam, side support frames and a chassis. Side support frames are symmetrically arranged on the left and right sides of the chassis, and a cross beam is arranged at the upper ends of the side support frames. A lower fixing plate is arranged below the lower mounting plate, and several sets of sub-cylinders are arranged in the middle of the lower fixing plate. Above the middle of the cross beam, a cylinder is fixedly installed through a bracket. A lower connecting block is arranged below the cylinder, and a lower mounting plate is arranged below the lower connecting block. The present invention controls the expansion and contraction of the lower pressing plate through the split sub-cylinders, realizes the split control of the lower die pressing module below, and through the split structure design, can meet the design of the split structure in the manhole cover die pressing production process. Through the die pressing design at different positions and by pressurizing the internal casting liquid, the problem of poor compactness caused by the large plane of the casting is reduced.

Description

Technical Field

[0001] The present invention relates to the field of manhole covers, and particularly to a die pressing device for producing high-strength manhole covers. Background Art

[0002] A manhole cover is used to cover a road or a deep well at home to prevent people or objects from falling. It can be classified into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. according to the material. Generally, it is circular. It can be used in green belts, sidewalks, motor vehicle lanes, docks, alleys, etc. Most of the production materials of manhole covers belong to cast iron manufacturing.

[0003] Casting is a metal hot working process that humans mastered relatively early. Casting is a method of pouring liquid metal into a casting cavity adapted to the shape of the part and waiting for it to cool and solidify to obtain the part or blank. Casting is a relatively economical blank forming method, and it shows its economy more for parts with complex shapes.

[0004] In the process of manhole cover casting production, the inventors of this application found that the above technologies have at least the following technical problems:

[0005] 1. During the casting process, it is necessary to pressurize the mold. Since the manhole cover is a casting part with a thin wall and a large plane, by pressurizing the internal casting liquid, the density of the casting is improved, and the problem of poor density caused by the large plane of the casting is reduced;

[0006] 2. The die pressing equipment needs to perform frequent vertical movements to ensure good stability and structural strength. For this reason, we propose a die pressing device for producing high-strength manhole covers to solve the above problems. Summary of the Invention

[0007] The main purpose of the present invention is to provide a die pressing device for producing high-strength manhole covers, which can effectively solve the problems in the background art.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is:

[0009] A die pressing device for producing high-strength manhole covers, comprising:

[0010] A structural frame, including a cross beam, side support frames and a chassis. A square plate structure is arranged at the bottom of the chassis, and side support frames are symmetrically arranged on the left and right sides of the chassis. A cross beam is arranged at the upper ends of the side support frames.

[0011] A lower mounting plate is arranged below the lower fixing plate, and a plurality of sets of air cylinders are arranged in the middle of the lower fixing plate.

[0012] Above the middle of the crossbeam, a cylinder is fixedly installed through a bracket. A lower connecting block is arranged below the cylinder, and a lower mounting plate is arranged below the lower connecting block. The lower connecting block is driven by the cylinder to drive the lower mounting plate below to perform pressing and rising actions.

[0013] Preferably, a lower die base is arranged in the middle below the chassis. The lower die base is the base structure for the injection molding production of manhole covers. An upper die base is correspondingly clamped and installed below the lower die base. Several groups of sliding seats are arranged in the middle above the upper die base, and the positions of the sliding seats correspond to those of the lower pressing plate. Through the split structure design, it can meet the design of the split structure in the production process of manhole cover pressing molds. By designing the pressing molds at different positions, the quality of the pressing molds can be better controlled.

[0014] Preferably, slide rails are arranged inside the side support frames, and sliders are slidably installed inside the slide rails. The sliders are respectively fixedly installed on both sides of the lower mounting plate. The sliders on both sides slide in the slide rails for guiding, improving the pressing mold device for producing manhole covers.

[0015] Preferably, two groups of side protruding blocks are symmetrically arranged inside the slide rails. The side protruding blocks are structural blocks protruding laterally. Through the inclined structural plates, the lateral support for the sliders is improved, and the lateral deviation of the up and down movement of the pressing mold is reduced.

[0016] Preferably, ball bearings are arranged on the upper and lower sides inside the slide rails. The ball bearings are of ball bearing structure. The rolling of the ball bearings is used to replace sliding to reduce the force and improve the stability during operation.

[0017] Preferably, a lower pressing plate is arranged below the sub-cylinder. The telescopic control of the lower pressing plate below is realized through the split sub-cylinder, achieving the split control of the lower pressing mold module below.

[0018] Preferably, the side support frames adopt a reinforcing rib structure protruding laterally to improve the structural strength of the crossbeam in the vertical direction of force.

[0019] Preferably, the lower fixing plate is a C-shaped structural block with an upward opening.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The lower connecting block is driven by the cylinder to drive the lower mounting plate below to perform pressing and rising actions. A lower pressing plate is arranged below the sub-cylinder. The telescopic control of the lower pressing plate below is realized through the split sub-cylinder, achieving the split control of the lower pressing mold module below. The positions of the sliding seats correspond to those of the lower pressing plate. Through the split structure design, it can meet the design of the split structure in the production process of manhole cover pressing molds. By designing the pressing molds at different positions and pressurizing the internal casting liquid, the density of the casting is improved, and the problem of poor density caused by the large plane of the casting is reduced.

[0022] 2. The sliders are respectively fixedly installed on both sides of the lower mounting plate and are guided by sliding in the slide rails on both sides. For the die pressing device for producing manhole covers, two groups of side projection blocks are symmetrically arranged inside the slide rails. The side projection blocks are structural blocks with lateral projections, and the support for the side of the slider is enhanced through the inclined structural plate, improving the lateral deviation of the die pressing during the up and down movement. Ball bearings are arranged on the upper and lower sides inside the slide rails. The ball bearings are of a ball bearing structure, and the rolling of the ball bearings is used to replace sliding to reduce the force and improve the stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is the overall structure diagram of a die pressing device for producing high-strength manhole covers according to the present invention;

[0024] Figure 2 FIG. is the top view structure diagram of the lower die base of a die pressing device for producing high-strength manhole covers according to the present invention;

[0025] Figure 3 FIG. is the partial enlarged view of the lower die base of a die pressing device for producing high-strength manhole covers according to the present invention;

[0026] Figure 4 FIG. is the side view structure diagram of the slider of a die pressing device for producing high-strength manhole covers according to the present invention.

[0027] In the figures: 1, cross beam; 2, side support frame; 3, chassis; 4, lower die base; 5, cylinder; 6, slide rail; 7, lower connecting block; 8, slider; 9, lower mounting plate; 10, lower fixing plate; 11, sub-cylinder; 12, side projection block; 13, ball bearing; 15, slide seat; 16, upper die base; 17, lower pressing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Among them, the same parts are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0030] Embodiment 1

[0031] Referring to Figure 1 as shown, a die pressing device for producing high-strength manhole covers includes:

[0032] The structural framework includes a cross beam 1, side support frames 2 and a chassis 3. A square plate structure is provided at the bottom of the chassis 3. Side support frames 2 are symmetrically arranged on the left and right sides of the chassis 3. The upper end of the side support frame 2 is provided with a cross beam 1. Above the middle of the cross beam 1, a cylinder 5 is fixedly installed through a bracket. A lower connecting block 7 is arranged below the cylinder 5, and a lower mounting plate 9 is arranged below the lower connecting block 7. The cylinder 5 drives the lower connecting block 7 to drive the lower mounting plate 9 below to perform pressing and rising actions.

[0033] A lower fixing plate 10 is arranged below the lower mounting plate 9. The lower fixing plate 10 is a C-shaped structural block with an upward opening. A number of sub-cylinders 11 are arranged in the middle of the lower fixing plate 10. A lower pressing plate 17 is arranged below the sub-cylinder 11. The telescopic control of the lower pressing plate 17 below is realized through the split sub-cylinders 11, so as to achieve the split control of the lower die pressing module below.

[0034] Comprehensive Figure 2 and 3 As shown in the figure, a lower die base 4 is arranged in the middle below the chassis 3. The lower die base 4 is the base structure for the injection molding production of manhole covers. An upper die base 16 is correspondingly clamped and installed below the lower die base 4. A number of sliding seats 15 are arranged in the middle above the upper die base 16. The positions of the sliding seats 15 correspond to those of the lower pressing plate 17. Through the split structure design, the split structure design in the manhole cover die pressing production process can be satisfied. Through the die pressing design at different positions, the die pressing quality can be better controlled.

[0035] The side support frame 2 adopts a reinforcing rib structure with lateral protrusions to enhance the structural strength of the cross beam 1 in the vertical direction of force.

[0036] Embodiment 2

[0037] Referring to Figure 1 As shown in the figure, a die pressing device for the production of high-strength manhole covers includes:

[0038] The structural framework includes a cross beam 1, side support frames 2 and a chassis 3. A square plate structure is provided at the bottom of the chassis 3. Side support frames 2 are symmetrically arranged on the left and right sides of the chassis 3. The upper end of the side support frame 2 is provided with a cross beam 1. Above the middle of the cross beam 1, a cylinder 5 is fixedly installed through a bracket. A lower connecting block 7 is arranged below the cylinder 5, and a lower mounting plate 9 is arranged below the lower connecting block 7. The cylinder 5 drives the lower connecting block 7 to drive the lower mounting plate 9 below to perform pressing and rising actions.

[0039] A lower fixing plate 10 is provided below the lower mounting plate 9. The lower fixing plate 10 is a C-shaped structural block with an upward opening. A number of sub-cylinders 11 are provided in the middle of the lower fixing plate 10. A lower pressing plate 17 is provided below the sub-cylinders 11. The telescopic control of the lower pressing plate 17 below is realized through the split sub-cylinders 11, so as to achieve the split control of the lower die pressing module.

[0040] Comprehensively Figure 2 and 3 As shown, a lower die base 4 is provided in the middle below the chassis 3. The lower die base 4 is the base structure for the injection molding production of manhole covers. An upper die base 16 is correspondingly clamped and installed below the lower die base 4. A number of sliding seats 15 are provided in the middle above the upper die base 16. The positions of the sliding seats 15 correspond to those of the lower pressing plate 17. Through the split structural design, the design of the split structure in the manhole cover die pressing production process can be satisfied. Through the die pressing design at different positions, the die pressing quality can be better controlled.

[0041] As Figure 4 shown, slide rails 6 are provided inside the side support frames 2. Sliders 8 are slidably installed inside the slide rails 6. The sliders 8 are respectively fixedly installed on both sides of the lower mounting plate 9. The production of manhole covers is improved by guiding through the sliding of the sliders 8 on both sides in the slide rails 6.

[0042] Two groups of side projection blocks 12 are symmetrically provided inside the slide rails 6. The side projection blocks 12 are structural blocks protruding laterally. The lateral support for the sliders 8 is improved through the inclined structural plates, and the lateral offset of the die pressing during the up and down movement is improved. Ball bearings 13 are provided on the upper and lower sides inside the slide rails 6. The ball bearings 13 are of ball bearing structure. The rolling of the ball bearings 13 is used to replace sliding to reduce the force and improve the stability during operation.

[0043] The side support frames 2 adopt a reinforced rib structure protruding laterally to improve the structural strength of the beam 1 in the vertical direction.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A die pressing device for producing high-strength manhole covers, characterized in that, Including: A structural framework, including a cross beam (1), side support frames (2) and a chassis (3). A square plate structure is provided at the bottom of the chassis (3). Side support frames (2) are symmetrically arranged on the left and right sides of the chassis (3), and a cross beam (1) is provided at the upper ends of the side support frames (2). Above the middle of the cross beam (1), a cylinder (5) is fixedly installed through a bracket. A lower connecting block (7) is provided below the cylinder (5), a lower mounting plate (9) is provided below the lower connecting block (7), a lower fixing plate (10) is provided below the lower mounting plate (9), and several sets of sub-cylinders (11) are provided in the middle of the lower fixing plate (10). The cylinder (5) drives the lower connecting block (7) to drive the lower mounting plate (9) below to perform the actions of pressing down and rising. In the middle below the chassis (3), a lower die base (4) is provided. The lower die base (4) is a base structure for the injection molding production of manhole covers. An upper die base (16) is correspondingly clamped and installed below the lower die base (4). Several sets of sliding seats (15) are provided in the middle above the upper die base (16), and the positions of the sliding seats (15) correspond to those of the lower pressing plate (17). Through the split structure design, it can meet the design of the split structure in the manhole cover pressing die production process. By designing the pressing die at different positions, the pressing die quality can be better controlled. Sliding rails (6) are provided inside the side support frames (2), and sliders (8) are slidably installed inside the sliding rails (6). The sliders (8) are respectively fixedly installed on both sides of the lower mounting plate (9). The sliding of the sliders (8) on both sides in the sliding rails (6) is used for guiding to improve the pressing die device for producing manhole covers.

2. The die pressing device for producing high-strength manhole covers according to claim 1, characterized in that: Two sets of side protruding blocks (12) are symmetrically arranged inside the sliding rails (6). The side protruding blocks (12) are structural blocks protruding laterally. The lateral support for the sliders (8) is improved through the inclined structural plate, and the lateral offset of the up and down movement of the pressing die is improved.

3. A die pressing device for producing high-strength manhole covers according to claim 2, characterized in that: Ball bearings (13) are provided on the upper and lower sides inside the sliding rails (6). The ball bearings (13) are of ball bearing structure. The rolling of the ball bearings (13) is used to replace sliding to reduce the force and improve the stability during operation.

4. A die pressing device for producing high-strength manhole covers according to claim 1, characterized in that: A lower pressing plate (17) is provided below the sub-cylinders (11). The telescopic control of the lower pressing plate (17) below is realized through the split sub-cylinders (11), and the split control of the lower pressing die module below is achieved.

5. The die pressing device for producing high-strength manhole covers according to claim 1, characterized in that: The side support frames (2) adopt a laterally protruding reinforcing rib structure to improve the structural strength of the cross beam (1) in the vertical direction of force.

6. The die pressing device for producing high-strength manhole covers according to claim 1, wherein: The lower fixing plate (10) is a C-shaped structural block with an upward opening.

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