A heating furnace discharge table system for a hot forming production line

Abstract

A heating furnace discharge table system for a hot forming production line includes a base, several furnace rollers and several rows of lifting tool holders, each furnace roller is arranged between adjacent rows of lifting tool holders, the lifting tool holders include several rows of conventional lifting tool holders and several rows of adjustable lifting tool holders, several rows of conventional lifting tool holders are assembled on a conventional lifting tool holder installation frame, the conventional lifting tool holder installation frame is located in the middle of the base, the conventional lifting tool holder installation frame drives the conventional lifting tool holder to achieve a unified lifting action, the adjustable lifting tool holder is arranged around the conventional lifting tool holder, and the adjustable lifting tool holder controls the lifting action according to the specifications and quantity of the conveyed product sheets. The lifting tool holder of the present invention is composed of a conventional lifting tool holder and an adjustable lifting tool holder, and the use of the adjustable lifting tool holder can be selected according to the conveying requirements of the product shape and quantity, avoiding the difficulty of loading due to the different lengths of the sheets, and only the long sheet can be used as the criterion for selecting the tool holder, which can improve the efficiency of debugging and line change, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to a hot forming processing equipment, in particular to a hot forming production line heating furnace discharge system. Background Art

[0002] Hot stamping forming technology is a new technology for forming high-strength steel plate parts and a key technology process for achieving lightweight production of automobile bodies. Hot stamping forming of high-strength steel obtains higher material strength and higher collision safety through the deformation heat treatment process, that is, the quenching effect during forming, thereby reducing the use of reinforcement plates, effectively reducing the weight of the vehicle body, and improving the surface hardness, dent resistance and corrosion resistance of parts, and ultimately significantly improving the collision resistance and overall safety of the vehicle body. At the same time, the material can also obtain higher material ductility by stamping in the hot state, which can improve the stamping forming performance of the plate, reduce the equipment load, and overcome the large rebound effect in cold stamping forming, so as to achieve a higher precision forming process for parts with complex shapes. In recent years, the hot stamping forming process of high-strength steel has been widely used in the production of key load-bearing parts such as front and rear door anti-collision beams, AB column reinforcement plates, central channel reinforcement plates, left and right door sill reinforcement plates, etc. At the same time, the types of parts formed by this process are also increasing year by year, which not only improves the strength of the vehicle body, but also reduces the weight of the vehicle, and provides passengers with a safer and more comfortable riding space.

[0003] Compared with the traditional cold forming process of sheet metal, the hot stamping process of high-strength steel is to heat the sheet in a heating furnace to above 900°, lift the sheet after the discharge table stops the material and centers it, grab the sheet by the robot and put it into the mold, and the sheet is quickly cooled while the press maintains the pressure to obtain ultra-high strength parts. In the above process, the heating furnace discharge table system is equipped with multiple rows of lifting tool holders, and the multiple rows of lifting tool holders correspond to a single drive device, so it is impossible to achieve the independent movement of a single tool holder. When the lengths of the sheets are different, because the hot sheets are soft and easy to deform, the tool holder can only be selected based on the long sheet (if the tool holder is selected based on the short sheet, the long sheet will be severely deformed due to lack of support). At this time, there will be redundant tool holders on both the front and back sides of the short sheet, and the clamps have no clamping space, resulting in difficulty in loading. Summary of the invention

[0004] The purpose of the present invention is to solve the drawbacks of the prior art and provide a heating furnace discharge table system for a thermoforming production line that can effectively solve the problem of lifting sheets of different lengths.

[0005] The problem described in the present invention is solved by the following technical solution:

[0006] A heating furnace discharge table system for a hot forming production line comprises a base, a plurality of furnace rollers and a plurality of rows of lifting tool holders mounted on the base, wherein each furnace roller is arranged between adjacent rows of lifting tool holders, and the lifting tool holders comprise a plurality of rows of conventional lifting tool holders and a plurality of rows of adjustable lifting tool holders, wherein the plurality of rows of conventional lifting tool holders are mounted on a conventional lifting tool holder mounting frame, wherein the conventional lifting tool holder mounting frame is located in the middle of the base, and the conventional lifting tool holder mounting frame drives the conventional lifting tool holder to realize a unified lifting action, and the adjustable lifting tool holder is arranged around the conventional lifting tool holder, and the adjustable lifting tool holder controls the lifting action according to the specifications and quantity of the conveyed product sheets.

[0007] The above-mentioned heating furnace discharge table system for the hot forming production line has no less than three rows of conventional lifting tool holders, and each row is provided with 2-4 columns; the front and rear parts of the conventional lifting tool holder are respectively provided with no less than two rows of adjustable lifting tool holders, and each row is provided with 2-4 columns of adjustable lifting tool holders; the adjustable lifting tool holders arranged on both sides of the conventional lifting tool holder have no more rows of lifting tool holders than the conventional lifting tool holder.

[0008] The above-mentioned heating furnace discharge table system for the hot forming production line, each adjustable lifting tool holder includes a lifting frame body, a lifting cylinder and a cylinder mounting seat, the cylinder mounting seat is fixed on the base, and the lifting cylinder piston rod is fixedly connected to the lifting tool holder body.

[0009] In the above-mentioned heating furnace discharge table system for the hot forming production line, a furnace roller is arranged between two adjacent rows of conventional lifting tool holders, and the interval between adjacent rows of adjustable lifting tool holders is greater than or equal to the interval between adjacent rows of conventional lifting tool holders.

[0010] The above-mentioned heating furnace discharge table system for the hot forming production line is also provided with a group of fixed middle finger mechanisms, each row of lifting tool holders is correspondingly provided with a group of fixed middle finger mechanisms, and the interval between the fixed middle finger mechanisms and the adjacent furnace rollers is not less than 5 mm.

[0011] In the heating furnace discharge table system for the hot forming production line, the lifting tool holder body is a hollow frame structure, and a row of lifting teeth is arranged on the upper part of the lifting tool holder body.

[0012] In the heating furnace discharge table system for the hot forming production line, the width of the lifting tool holder body at the two sides is greater than the width of the lifting tool holder body at the middle.

[0013] The heating furnace discharge table system for the above-mentioned hot forming production line has high-temperature resistant roller rings evenly distributed on the furnace rollers.

[0014] In the heating furnace discharge table system for the hot forming production line, the conventional lifting tool holder and the conventional lifting tool holder mounting frame are pluggable connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0016] (1) The lifting tool holder is composed of a conventional lifting tool holder and an adjustable lifting tool holder. The use of the adjustable lifting tool holder can be selected according to the shape and quantity of the product to avoid the problem of difficulty in loading materials due to the different lengths of the sheets and the need to select the tool holder based on the long sheet.

[0017] (2) The conventional lifting tool holder has the function of manually inserting and removing the lifting tool holder body, which is more flexible to use with the adjustment of the lifting tool holder;

[0018] (3) It can improve the efficiency of debugging and line changing, saving about 20 minutes on average for each line changing;

[0019] (4) It can lift 1-cavity, 2-cavity, 3-cavity, and 4-cavity product sheets respectively, and has a wide range of applications.

[0020] (5) The original tool lift was controlled by a servo motor. All tool lifts were lifted indiscriminately, resulting in wasted work each time. The load was large and the lifting frame was prone to breakage. The new tool lift can completely avoid such problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 yes Figure 1 A-direction view;

[0024] Figure 3 is a schematic diagram of an embodiment of lifting a four-cavity product sheet according to the present invention;

[0025] Figure 4 is a schematic diagram of an embodiment of lifting a three-cavity product sheet according to the present invention;

[0026] Figure 5 It is a schematic diagram of an embodiment of lifting a two-cavity product sheet according to the present invention.

[0027] The list of numbers in the figure is: 1. Furnace roller, 2. Adjustment of lifting tool holder, 3. Fixed middle finger mechanism, 4. Conventional lifting tool holder, 5. Lifting cylinder, 6. Cylinder mounting seat, 7. Base, 8. Lifting tool holder body, 9. High temperature resistant roller ring, 10. Product sheet. DETAILED DESCRIPTION

[0028] See also Figure 1The present invention includes a base 7, several furnace rollers 1 for conveying product sheets, and several rows of lifting tool holders assembled on the base. The furnace rollers are evenly distributed with high-temperature resistant roller rings 9 on each furnace roller. The lifting tool holder is composed of two parts, namely several rows of conventional lifting tool holders 4 and several rows of adjustable lifting tool holders 2. Several rows of conventional lifting tool holders are assembled on a conventional lifting tool holder mounting frame, and the conventional lifting tool holder mounting frame is located in the middle of the base. The servo motor drives the lifting and falling of the conventional lifting tool holder mounting frame through the transmission mechanism, that is, the conventional lifting tool holder performs the lifting action uniformly. The conventional lifting tool holder is pluggable and connected to the conventional lifting tool holder mounting frame. For some product sheets with smaller external dimensions, the lifting of the product sheets can be completed by the conventional lifting tool holder alone. There are no less than three rows of conventional lifting tool holders, and each row is provided with 2-4 columns, and a furnace roller is arranged between two adjacent rows of conventional lifting tool holders. For products with larger dimensions or when the conveyed sheets are of different lengths, a conventional lifting tool holder and an adjustable lifting tool holder are required to lift the product sheets together. The adjustable lifting tool holder is arranged around the conventional lifting tool holder, and each adjustable lifting tool holder is provided with a lifting cylinder 5 that provides independent power, that is, each adjustable lifting tool holder is individually controlled by the corresponding cylinder. The lifting cylinder is mounted on a cylinder mounting seat 6, and the cylinder mounting seat is fixed on the base, and the lifting cylinder piston rod is fixedly connected to the lifting tool holder body. The front and rear parts of the conventional lifting tool holder are respectively provided with no less than two rows of adjustable lifting tool holders, and each row is provided with 2-4 rows of adjustable lifting tool holders. Adjustable lifting tool holders can also be arranged on both sides of the conventional lifting tool holder as needed. Normally, the conventional lifting tool holder is the main body for lifting the product sheets, and the adjustable lifting tool holder is a supplement to the conventional lifting tool holder, so the interval between adjacent rows of adjustable lifting tool holders is greater than or equal to the interval between adjacent rows of conventional lifting tool holders. For example Figure 1 As shown, two adjacent rows of conventional lifting tool holders are separated by a furnace roller, and two adjacent rows of adjustable lifting tool holders are separated by two furnace rollers. In order to reduce the deadweight of the lifting tool holder body, the lifting tool holder body 8 is a hollow frame structure. A row of lifting teeth is arranged on the upper part of the lifting tool holder body. The lifting tooth structure increases the friction between the material and prevents the material from sliding, and reduces the contact area with the material to prevent heat loss.

[0029] See also Figure 1 The system is also provided with a group of centering finger mechanisms 3 for accurately positioning the product sheets. Each row of lifting tool holders is provided with a corresponding group of centering finger mechanisms. The interval between the centering finger mechanisms and the adjacent furnace rollers is not less than 5 mm to prevent the centering fingers from colliding with the furnace rollers during the lateral movement process.

[0030] When the present invention is used, the position and number of the adjustment lifting tool holders are determined according to the shape and quantity of the conveyed product sheets. When the furnace rollers deliver the product sheets to the lifting tool holder position, the sheet is first precisely positioned by the center finger mechanism, and then the conventional lifting tool holder and the adjustment lifting tool holder are simultaneously actuated to lift the product sheets to a height that the robot can grasp.

[0031] See also Figure 3 This is a schematic diagram of an embodiment of the present invention for lifting a four-cavity product sheet. In this embodiment, four rows of conventional lifting tool holders are arranged. Since the product sheet located in the middle is longer, there are adjusting lifting tool holders in front and behind each row of the adjusting lifting tool holders located in the middle to participate in the lifting operation; the product sheets located on both sides are shorter, and there are adjusting lifting tool holders in front of each row of the adjusting lifting tool holders located on both sides to participate in the lifting operation. The actions of the above-mentioned adjusting lifting tool holders are controlled by the control device to control the cylinder actions.

[0032] See also Figure 4 This is a schematic diagram of an embodiment of the present invention for lifting a three-cavity product sheet. In this embodiment, four rows of conventional lifting tool holders are arranged, and there is a row of adjustment lifting tool holders in front of each row of conventional lifting tool holders to cooperate with the conventional lifting tool holders to perform lifting operations. The above-mentioned action of adjusting the lifting tool holder is controlled and implemented by the control device.

[0033] See also Figure 5 This is a schematic diagram of an embodiment of the present invention for lifting a two-cavity product sheet. In this embodiment, the product sheet is relatively slender, and a conventional lifting tool holder is arranged in four rows, with two columns in each row. Each column of the conventional lifting tool holder has two rows in the front, with two columns in each row, and three rows in the rear, with two columns in each row. The adjustment lifting tool holder cooperates with the conventional lifting tool holder to perform the lifting operation, and the above-mentioned action of adjusting the lifting tool holder is controlled and implemented by the control device.

Claims

1. A heating furnace discharge table system for a hot forming production line, comprising a base (7), a plurality of furnace rollers (1) and a plurality of rows of lifting tool holders mounted on the base, wherein each furnace roller is arranged between adjacent rows of lifting tool holders, and characterized in that: The lifting tool holder comprises several rows of conventional lifting tool holders (4) and several rows of adjustable lifting tool holders (2), wherein the rows of conventional lifting tool holders are mounted on a conventional lifting tool holder mounting frame, the conventional lifting tool holder mounting frame is located in the middle of the base, the conventional lifting tool holder mounting frame drives the conventional lifting tool holder to achieve a uniform lifting action, and the adjustable lifting tool holder is arranged around the conventional lifting tool holder, and the adjustable lifting tool holder controls the lifting action according to the specifications and quantity of the conveyed product sheets; There are no less than three rows of conventional lifting tool holders, with 2-4 columns in each row; there are no less than two rows of adjustable lifting tool holders in front and rear of the conventional lifting tool holder, with 2-4 columns in each row; the adjustable lifting tool holders arranged on both sides of the conventional lifting tool holder have no more rows than the conventional lifting tool holder.

2. The heating furnace discharge table system for a hot forming production line according to claim 1, characterized in that: Each adjustable lifting tool holder comprises a lifting holder body (8), a lifting cylinder (5) and a cylinder mounting seat (6); the cylinder mounting seat is fixed on the base, and the lifting cylinder piston rod is fixedly connected to the lifting tool holder body.

3. The heating furnace discharge table system for a hot forming production line according to claim 2, characterized in that: A furnace roller is arranged between two adjacent rows of conventional lifting tool rests, and the interval between adjacent rows of adjustable lifting tool rests is greater than or equal to the interval between adjacent rows of conventional lifting tool rests.

4. The heating furnace discharge table system for a hot forming production line according to claim 3, characterized in that: The system is also provided with a plurality of center-fixed finger mechanisms (3), each row of lifting tool holders being provided with a corresponding group of center-fixed finger mechanisms, and the interval between the center-fixed finger mechanisms and the adjacent furnace rollers is not less than 5 mm.

5. The heating furnace discharge table system for a hot forming production line according to claim 4, characterized in that: The lifting tool holder body is a hollow frame structure, and a row of lifting teeth is arranged on the upper part of the lifting tool holder body.

6. The heating furnace discharge table system for a hot forming production line according to claim 5, characterized in that: The width of the lifting tool holder body at the two sides is greater than the width of the lifting tool holder body at the middle.

7. The heating furnace discharge table system for a hot forming production line according to claim 6, characterized in that: High temperature resistant roller rings (9) are evenly distributed on the furnace rollers.

8. The heating furnace discharge table system for a hot forming production line according to claim 7, characterized in that: The conventional lifting tool holder and the conventional lifting tool holder mounting frame are pluggable connected.

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