Combined type thermal forming production line with preheating and repositioning functions

Abstract

The utility model relates to a combined type thermal forming production line with preheating and repositioning functions. The combined type thermal forming production line comprises a feeding unit, a material fork unit, a preheating furnace, a roller type heating furnace, a first carrying mechanism, a second carrying mechanism and a transfer table. The feeding unit, the transfer table and the roller type heating furnace are sequentially arranged in the X direction, the material fork unit is arranged on the Y-direction side of the transfer table, the preheating furnace is arranged on one side of the material fork unit, the first carrying mechanism is arranged close to the feeding unit and the transfer table, and the second carrying mechanism is arranged close to inlets of the transfer table and the roller type heating furnace. A plurality of supporting columns and at least two positioning pins are arranged on the transfer table, and the X direction and the Y direction are located in the horizontal plane and are perpendicular to each other. When a raw material plate is sent back to the transfer table after being preheated, the top of the positioning pin needs to position the raw material plate again, in this way, the second carrying mechanism can guarantee that the raw material plate is grabbed, the raw material plate is not prone to colliding due to conveying deviation after entering the roller type heating furnace, and the quality problem is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal non -cutting processing technical field, especially relates to a composite hot forming production line with preheating and repositioning function. BACKGROUND

[0002] In recent years, with the comprehensive requirements of automobile lightweight and automobile structure safety being higher and higher, especially the requirement of electric vehicles on the endurance mileage leads to the weight of the vehicle body being given to the battery load, and the safety regulations on the requirement of small offset collision are improved, and the door ring combined product becomes the popular scheme of the vehicle body design. Compared with the production of the traditional single hot forming product, the door ring product perfectly meets the requirements of small offset collision and the index requirements of vehicle body weight reduction of safety regulations, and the door ring product itself can significantly reduce energy loss and improve production efficiency in the production and manufacturing link.

[0003] The hot forming process is the process of converting the material into austenite with good plasticity, and then quenching into hard martensite after hot pressing deformation.

[0004] Chinese patent CN116213537A discloses a composite preheating hot forming production line, which utilizes the first carrying mechanism to place the door ring on the fork at the feeding position, the fork sends the door ring into the preheating furnace for preheating and sends the preheated door ring back to the feeding position, and then the second carrying mechanism moves the door ring into the roller heating furnace for heating. In the preheating furnace, the door ring will inevitably appear slight structural deformation due to thermal expansion, so when the fork sends the door ring back to the feeding position, the position will be uncontrollably offset. In serious cases, one hidden danger is that the second carrying mechanism cannot successfully pick up the door ring, and continuous production cannot continue, and another hidden danger is that the door ring is offset during transportation in the roller heating furnace, causing collision damage and affecting the quality after hot forming.

[0005] Therefore, it is necessary to provide an improved hot forming production line to solve the above problems. UTILITY MODEL CONTENTS

[0006] The main purpose of the utility model is to provide a composite hot forming production line with preheating and repositioning function, which can increase positioning between preheating in the preheating furnace and heating in the roller heating furnace, guarantee the production continuity and avoid quality problems caused by product collision.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: A composite thermoforming production line with preheating and repositioning function includes a feeding unit, a fork unit, a preheating furnace, a roller heating furnace, a first conveying mechanism, a second conveying mechanism, and a transfer platform; the feeding unit, the transfer platform, and the roller heating furnace are arranged sequentially along the X direction; the fork unit is located on the Y-direction side of the transfer platform; the preheating furnace is located on one side of the fork unit; the first conveying mechanism is located close to the feeding unit and the transfer platform; the second conveying mechanism is located close to the entrance of the transfer platform and the roller heating furnace; the raw material plate is provided with a plurality of positioning holes; the transfer platform is provided with a plurality of support columns that lift the raw material plate and at least two positioning pins that are positioned by the positioning holes; the X and Y directions are both located in the horizontal plane and are perpendicular to each other.

[0008] Specifically, the feeding unit has two feeding positions.

[0009] Specifically, the preheating furnace is a box-type heating furnace with multiple heating chambers arranged vertically.

[0010] Furthermore, the feeding fork unit includes a feeding fork, a rotary pushing mechanism for driving the feeding fork to rotate around the Z-axis and move horizontally, and a lifting mechanism for driving the feeding fork to rise and fall along the Z-axis. The preheating furnace is located on the X-direction side of the feeding fork unit, and the Z-direction is the vertical direction.

[0011] Furthermore, the positioning post is offset from the fork, and the positioning post provides a height space below the raw material plate for the fork to be inserted horizontally.

[0012] Specifically, a coding mechanism is also provided on one side of the first handling mechanism.

[0013] Specifically, a first waste collection mechanism is also provided on one side of the second handling mechanism.

[0014] Specifically, the roller furnace is provided with a third conveying mechanism and a hot press on one side of the outlet, and a fourth conveying mechanism, a second waste collection mechanism and a discharge line are also provided on one side of the hot press.

[0015] The beneficial effects of this utility model's technical solution are:

[0016] Because the raw material plate expands due to heat in the heating chamber, the position of the through hole on it will change uncertainly over a short distance. When it is sent back to the transfer table, the top of the positioning pin needs to be repositioned so that the second conveying mechanism can ensure that it can grab the raw material plate. The raw material plate is also less likely to collide due to conveying deviation after entering the roller heating furnace, thus avoiding quality problems. Attached Figure Description

[0017] Figure 1This is a partial top view of the composite thermoforming production line of the embodiment;

[0018] Figure 2 This is a partial enlarged view of the feeding unit, forklift unit, transfer platform, first conveying mechanism, second conveying mechanism, and roller furnace inlet;

[0019] Figure 3 This is a 3D view of the transfer station;

[0020] Figure 4 This is a top view of the overall composite thermoforming production line.

[0021] The numbers in the image represent:

[0022] 100-Composite thermoforming production line, 1-Feeding unit, 2-Fork unit, 21-Fork, 22-Rotary pushing mechanism, 23-Lifting mechanism, 3-Preheating furnace, 4-Roller heating furnace, 5a-First conveying mechanism, 5b-Second conveying mechanism, 5c-Third conveying mechanism, 5d-Fourth conveying mechanism, 6-Transfer platform, 61-Support column, 62-Positioning pin, 7-Marking mechanism, 8a-First waste collection mechanism, 8b-Second waste collection mechanism, 9-Hot press, 10-Discharge line;

[0023] 200 - Raw material board. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to specific embodiments.

[0025] Example:

[0026] like Figure 1 and Figure 2 As shown, the present invention provides a composite thermoforming production line, comprising a feeding unit 1, a fork unit 2, a preheating furnace 3, a roller heating furnace 4, a first conveying mechanism 5a, a second conveying mechanism 5b, a third conveying mechanism 5c, a fourth conveying mechanism 5d, a transfer table 6, a coding mechanism 7, a first waste collection mechanism 8a, a second waste collection mechanism 8b, a hot press 9, and a discharge line 10.

[0027] like Figures 1 to 3As shown, the feeding unit 1, the transfer platform 6, and the roller furnace 4 are arranged sequentially along the X-direction. The fork unit 2 is located on the Y-direction side of the transfer platform 6, and the preheating furnace 3 is located on one side of the fork unit 2. The first conveying mechanism 5a is located near the feeding unit 1 and the transfer platform 6 and is used to move the raw material plate 200 from the feeding unit 1 to the transfer platform 6. The second conveying mechanism 5b is located near the transfer platform 6 and the entrance of the roller furnace 4 and is used to move the raw material plate 200 from the transfer platform 6 to the entrance of the roller furnace 4. The raw material plate 200 is provided with several positioning holes. The transfer platform 6 is provided with multiple support columns 61 that support the raw material plate 200 and at least two positioning pins 62 that are positioned using the positioning holes. The X-direction and the Y-direction are both located in the horizontal plane and are perpendicular to each other.

[0028] The preheating furnace 3 is a box-type heating furnace with multiple heating chambers (not exposed) arranged vertically, which saves the factory space required for preheating. The fork unit 2 is used to feed the raw material plate 200 into and out of different heating chambers. The transfer table 6 is used to position both unheated raw material plates 200 and preheated plates that have been preheated by the preheating furnace 3. Because the raw material plate 200 expands due to heat in the heating chamber, the position of its through holes will change uncertainly over a short distance. When it is returned to the transfer table 6, the top of the positioning pin 62 needs to be repositioned so that the second conveying mechanism 5b can ensure that it can grasp the preheated plate. The preheated plate is also less likely to collide due to conveying deviation after entering the roller furnace 4, thus avoiding quality problems.

[0029] like Figure 1 As shown, the feeding unit 1 has two feeding positions 11.

[0030] The raw material plate 200 is stacked on the loading position 11. The two loading positions 11 can be used alternately by the first conveying mechanism 5a to move the plate, which can avoid the interference of manual loading on the continuity of plate moving.

[0031] like Figure 2 As shown, the feeding fork unit 2 includes a feeding fork 21, a rotary pushing mechanism 22 that drives the feeding fork 21 to rotate around the Z-axis and move horizontally, and a lifting mechanism 23 that drives the feeding fork 21 to rise and fall along the Z-axis. The preheating furnace 3 is located on the X-direction side of the feeding fork unit 2. The Z-direction is the vertical direction.

[0032] Because the transfer station 6 is located on the Y-axis side of the fork unit 2 and the preheating furnace 3 is located on the X-axis side of the fork unit 2, the rotating pushing mechanism 22 only needs to rotate the fork 21 by 90°. This not only makes the parts layout more compact but also shortens the rotation time and makes the working rhythm faster.

[0033] like Figure 3 As shown, the support column 61 is offset from the fork 21, and the support column 61 provides a height space below the raw material plate 200 for the fork 21 to be inserted horizontally.

[0034] The raw material plate 200 is suspended on the transfer table 6. When the fork 21 takes away the raw material plate 200, it must first insert itself under the raw material plate 200 and then rise to make the raw material plate 200 detach from the support column 61. When the fork 21 returns the preheating plate, it must place the preheating plate from top to bottom so that it is supported and repositioned by the support column 61.

[0035] like Figure 1 and Figure 2 As shown, a coding mechanism 7 is also provided on one side of the first handling mechanism 5a.

[0036] Since the raw material plate 200 begins preheating, the production status needs to be traced, so the coding mechanism 7 is required to code it. The first conveying mechanism 5a needs to pick up the raw material plate 200 and send it to the front of the coding mechanism 7 for coding, and then send it to the transfer station 6.

[0037] like Figure 1 As shown, a first waste collection mechanism 8 is also provided on one side of the second handling mechanism 5b.

[0038] The preheated plate, after being preheated in the preheating furnace 3, may experience poor heating if the temperature is outside the set range. In this case, the preheated plate cannot be sent into the roller furnace 4, but needs to be placed on the first waste collection mechanism 8a by the second conveying mechanism 5b for centralized processing.

[0039] like Figure 4 As shown, the roller furnace 4 is provided with a third conveying mechanism 5c and a hot press 9 on the outlet side, and a fourth conveying mechanism 5d, a second waste collection mechanism 8b and a discharge line 10 are also provided on the side of the hot press 9.

[0040] The third conveying mechanism 5c moves the heated sheet material from the roller furnace 4 to the hot press 9. The hot press 9 presses the sheet material into a product sheet while it is still hot. If the product sheet is qualified, the fourth conveying mechanism 5d moves it from the hot press 9 to the discharge line 10; otherwise, it moves it to the second waste collection mechanism 8b. The second waste collection mechanism 8b collects defective products, and the discharge line discharges qualified products normally.

[0041] The workflow of this production line is as follows:

[0042] Raw material plates 200 are stacked on the loading position 11. The first conveying mechanism 5a removes one raw material plate 200 from the top, and then moves it to the coding mechanism 7 for coding to establish a traceability system. Then, the first conveying mechanism 5a places the raw material plate 200 on the transfer platform 6. The support column 61 lifts the raw material plate 200, and the positioning pin 62 positions the raw material plate 200 using the positioning hole. At this time, the fork 21 will be waiting below the raw material plate 200. After the raw material plate 200 is in place, the fork 21 rises and then sends the raw material plate 200 into the empty heating chamber of the preheating furnace 3. The heating chamber will automatically heat the raw material plate 200 to a preheated plate with a temperature within the set range. The fork 21 then takes out another preheated plate from another preheated heating chamber. The plate is returned to the transfer station 6, where the positioning pin 62 performs a secondary positioning to prevent thermal expansion from causing the plate to shift position. If the temperature of the preheated plate is not within the set range, the second conveying mechanism 5b will transfer it to the first waste collection mechanism 8a. If the temperature of the preheated plate is within the set range, the second conveying mechanism 5b will transfer it to the inlet of the roller furnace 4. The roller furnace 4 will continue to heat the preheated plate until it meets the temperature requirements for thermoforming. Then, the third conveying mechanism 5c will immediately remove the plate from the outlet of the roller furnace 4 and place it in the hot press 9 to be hot-pressed into a product plate. After the hot press 9 opens the mold, the fourth conveying mechanism 5d will move it to the second waste collection mechanism 8b or the discharge line 10 according to the quality of the product plate.

[0043] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A composite thermoforming production line with preheating and repositioning function, characterized in that: The system includes a feeding unit, a fork unit, a preheating furnace, a roller furnace, a first conveying mechanism, a second conveying mechanism, and a transfer platform. The feeding unit, the transfer platform, and the roller furnace are arranged sequentially along the X-axis. The fork unit is located on the Y-axis side of the transfer platform, and the preheating furnace is located on one side of the fork unit. The first conveying mechanism is located near the feeding unit and the transfer platform, and the second conveying mechanism is located near the entrance of the transfer platform and the roller furnace. The raw material plate is provided with several positioning holes, and the transfer platform is provided with multiple support columns that lift the raw material plate and at least two positioning pins that are positioned using the positioning holes. The X-axis and Y-axis are both located in the horizontal plane and are perpendicular to each other.

2. The composite thermoforming production line according to claim 1, characterized in that: The feeding unit has two feeding positions.

3. The composite thermoforming production line according to claim 1, characterized in that: The preheating furnace is a box-type heating furnace with multiple heating chambers arranged vertically.

4. The composite thermoforming production line according to claim 3, characterized in that: The feed fork unit includes a feed fork, a rotary pushing mechanism that drives the feed fork to rotate around the Z-axis and move horizontally, and a lifting mechanism that drives the feed fork to rise and fall along the Z-axis. The preheating furnace is located on the X-direction side of the feed fork unit, and the Z-direction is the vertical direction.

5. The composite thermoforming production line according to claim 4, characterized in that: The support column is offset from the fork, and the support column provides a height space below the raw material plate for the fork to be inserted horizontally.

6. The composite thermoforming production line according to claim 1, characterized in that: A coding mechanism is also provided on one side of the first handling mechanism.

7. The composite thermoforming production line according to claim 1, characterized in that: A first waste collection mechanism is also provided on one side of the second handling mechanism.

8. The composite thermoforming production line according to claim 1, characterized in that: The roller furnace is provided with a third conveying mechanism and a hot press on one side of the outlet, and a fourth conveying mechanism, a second waste collection mechanism and a discharge line on one side of the hot press.

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